/* roulang page: index */
:root {
            --qb-primary: #00e676;
            --qb-primary-dark: #00c853;
            --qb-primary-glow: rgba(0, 230, 118, 0.35);
            --qb-secondary: #00b0ff;
            --qb-accent: #ff6d00;
            --qb-bg-dark: #0a0e17;
            --qb-bg-deep: #060810;
            --qb-bg-card: #111827;
            --qb-bg-card-hover: #1a2332;
            --qb-text: #e8eaf0;
            --qb-text-muted: #9ca3af;
            --qb-text-dim: #6b7280;
            --qb-border: #1f2937;
            --qb-border-light: #2d3748;
            --qb-radius-sm: 8px;
            --qb-radius-md: 14px;
            --qb-radius-lg: 20px;
            --qb-radius-xl: 28px;
            --qb-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
            --qb-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
            --qb-shadow-glow: 0 0 24px rgba(0, 230, 118, 0.25);
            --qb-font: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --qb-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--qb-font);
            background-color: var(--qb-bg-dark);
            color: var(--qb-text);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
        }

        ::selection {
            background: var(--qb-primary);
            color: #000;
        }

        a {
            color: var(--qb-primary);
            text-decoration: none;
            transition: var(--qb-transition);
        }
        a:hover {
            color: var(--qb-primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--qb-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        /* Header / Nav */
        .qb-header {
            background: var(--qb-bg-deep);
            border-bottom: 1px solid var(--qb-border);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        .qb-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--qb-primary), var(--qb-secondary), transparent);
            opacity: 0.7;
        }
        .qb-navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .qb-logo {
            font-size: 1.55rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .qb-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #000;
            font-weight: 900;
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-logo:hover {
            color: #fff;
            opacity: 0.9;
        }
        .qb-nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .qb-nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--qb-text-muted);
            white-space: nowrap;
            transition: var(--qb-transition);
            position: relative;
        }
        .qb-nav-links li a:hover {
            color: #fff;
            background: rgba(0, 230, 118, 0.08);
        }
        .qb-nav-links li a.active {
            color: var(--qb-primary);
            background: rgba(0, 230, 118, 0.12);
            box-shadow: 0 0 16px rgba(0, 230, 118, 0.2);
        }
        .qb-nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--qb-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--qb-primary-glow);
        }
        .qb-nav-cta {
            background: var(--qb-primary);
            color: #000 !important;
            font-weight: 700;
            padding: 9px 18px !important;
            border-radius: 10px;
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-nav-cta:hover {
            background: var(--qb-primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(0, 230, 118, 0.4);
        }

        .qb-hamburger {
            display: none;
            background: transparent;
            border: 1px solid var(--qb-border-light);
            border-radius: 8px;
            color: var(--qb-text);
            font-size: 1.3rem;
            padding: 6px 12px;
            cursor: pointer;
            transition: var(--qb-transition);
        }
        .qb-hamburger:hover {
            border-color: var(--qb-primary);
            color: var(--qb-primary);
        }

        /* Hero */
        .qb-hero {
            background: linear-gradient(160deg, var(--qb-bg-deep) 0%, #0d1525 40%, #0a1a14 100%);
            padding: 64px 0 80px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }
        .qb-hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(0, 230, 118, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 20% 70%, rgba(0, 176, 255, 0.08) 0%, transparent 50%);
            pointer-events: none;
        }
        .qb-hero .container {
            position: relative;
            z-index: 2;
        }
        .qb-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 230, 118, 0.15);
            color: var(--qb-primary);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            border: 1px solid rgba(0, 230, 118, 0.3);
            margin-bottom: 20px;
        }
        .qb-hero h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .qb-hero h1 .highlight {
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .qb-hero .lead {
            font-size: 1.1rem;
            color: var(--qb-text-muted);
            max-width: 620px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .qb-hero-ctas {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .qb-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 12px;
            font-size: 0.98rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--qb-transition);
            text-decoration: none;
            letter-spacing: 0.3px;
        }
        .qb-btn-primary {
            background: var(--qb-primary);
            color: #000;
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-btn-primary:hover {
            background: var(--qb-primary-dark);
            color: #000;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 230, 118, 0.45);
        }
        .qb-btn-outline {
            background: transparent;
            color: var(--qb-text);
            border: 1.5px solid var(--qb-border-light);
        }
        .qb-btn-outline:hover {
            border-color: var(--qb-primary);
            color: var(--qb-primary);
            background: rgba(0, 230, 118, 0.06);
            transform: translateY(-2px);
        }
        .qb-btn-secondary {
            background: var(--qb-secondary);
            color: #000;
            box-shadow: 0 0 20px rgba(0, 176, 255, 0.3);
        }
        .qb-btn-secondary:hover {
            background: #0091ea;
            color: #000;
            transform: translateY(-2px);
        }
        .qb-hero-trust {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: var(--qb-text-dim);
            font-size: 0.85rem;
        }
        .qb-hero-trust span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .qb-hero-trust i {
            color: var(--qb-primary);
        }
        .qb-hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
            margin-top: 36px;
            background: rgba(17, 24, 39, 0.75);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-lg);
            padding: 22px 24px;
            backdrop-filter: blur(12px);
        }
        .qb-hero-stat {
            text-align: center;
        }
        .qb-hero-stat .num {
            font-size: 1.9rem;
            font-weight: 900;
            color: var(--qb-primary);
            line-height: 1.2;
        }
        .qb-hero-stat .label {
            font-size: 0.82rem;
            color: var(--qb-text-muted);
            margin-top: 2px;
        }

        /* Section common */
        .qb-section {
            padding: 64px 0;
        }
        .qb-section-alt {
            background: #0c111d;
            border-top: 1px solid var(--qb-border);
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-section-dark {
            background: var(--qb-bg-deep);
        }
        .qb-section-header {
            margin-bottom: 36px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .qb-section-header h2 {
            font-size: 1.85rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 6px;
        }
        .qb-section-header .sub {
            color: var(--qb-text-muted);
            font-size: 0.95rem;
            max-width: 550px;
            line-height: 1.6;
        }
        .qb-section-tag {
            display: inline-block;
            background: rgba(0, 230, 118, 0.1);
            color: var(--qb-primary);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
            border: 1px solid rgba(0, 230, 118, 0.2);
        }

        /* Live Ticker */
        .qb-ticker {
            background: #0d1320;
            border-bottom: 1px solid var(--qb-border);
            padding: 10px 0;
            overflow: hidden;
            position: relative;
        }
        .qb-ticker-inner {
            display: flex;
            gap: 32px;
            white-space: nowrap;
            animation: qbTicker 30s linear infinite;
            width: max-content;
        }
        .qb-ticker:hover .qb-ticker-inner {
            animation-play-state: paused;
        }
        @keyframes qbTicker {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }
        .qb-ticker-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--qb-text-muted);
        }
        .qb-ticker-item .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--qb-primary);
            box-shadow: 0 0 8px var(--qb-primary-glow);
            animation: qbPulse 1.5s ease-in-out infinite;
        }
        .qb-ticker-item .score {
            color: #fff;
            font-weight: 700;
        }
        @keyframes qbPulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* Countdown */
        .qb-countdown-section {
            background: linear-gradient(135deg, #071a12 0%, #0a1a10 50%, #071018 100%);
            border-top: 1px solid var(--qb-border);
            border-bottom: 1px solid var(--qb-border);
            padding: 46px 0;
        }
        .qb-countdown-grid {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
        }
        .qb-countdown-info h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 6px;
        }
        .qb-countdown-info p {
            color: var(--qb-text-muted);
            font-size: 0.92rem;
            margin: 0;
        }
        .qb-countdown-boxes {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .qb-countdown-box {
            background: rgba(0, 230, 118, 0.08);
            border: 1px solid rgba(0, 230, 118, 0.25);
            border-radius: var(--qb-radius-md);
            padding: 12px 18px;
            text-align: center;
            min-width: 70px;
        }
        .qb-countdown-box .num {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--qb-primary);
            line-height: 1.1;
        }
        .qb-countdown-box .unit {
            font-size: 0.75rem;
            color: var(--qb-text-muted);
        }

        /* Feature cards */
        .qb-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-lg);
            padding: 26px 24px;
            transition: var(--qb-transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .qb-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--qb-primary), transparent);
            opacity: 0;
            transition: var(--qb-transition);
        }
        .qb-card:hover {
            background: var(--qb-bg-card-hover);
            border-color: rgba(0, 230, 118, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-card:hover::before {
            opacity: 1;
        }
        .qb-card .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 230, 118, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--qb-primary);
            margin-bottom: 16px;
        }
        .qb-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .qb-card p {
            color: var(--qb-text-muted);
            font-size: 0.9rem;
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* Activity wall */
        .qb-activity-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .qb-activity-card {
            border-radius: var(--qb-radius-lg);
            overflow: hidden;
            border: 1px solid var(--qb-border);
            background: var(--qb-bg-card);
            transition: var(--qb-transition);
            position: relative;
        }
        .qb-activity-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--qb-shadow-md);
            border-color: rgba(0, 230, 118, 0.3);
        }
        .qb-activity-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-activity-card .body {
            padding: 18px;
        }
        .qb-activity-card .body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .qb-activity-card .body p {
            color: var(--qb-text-muted);
            font-size: 0.83rem;
            margin: 0;
            line-height: 1.5;
        }
        .qb-activity-card .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.8);
            color: var(--qb-primary);
            padding: 4px 10px;
            border-radius: 50px;
            font-size: 0.72rem;
            font-weight: 600;
            border: 1px solid rgba(0, 230, 118, 0.3);
        }

        /* Membership / comparison */
        .qb-compare-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .qb-compare-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: var(--qb-transition);
            position: relative;
        }
        .qb-compare-card:hover {
            border-color: rgba(0, 230, 118, 0.4);
            transform: translateY(-5px);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-compare-card.featured {
            border-color: var(--qb-primary);
            box-shadow: var(--qb-shadow-glow);
            background: linear-gradient(160deg, #0e1a14 0%, #0a1220 100%);
        }
        .qb-compare-card .badge-featured {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--qb-primary);
            color: #000;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
        }
        .qb-compare-card h3 {
            font-size: 1.15rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 4px;
        }
        .qb-compare-card .price {
            font-size: 2rem;
            font-weight: 900;
            color: var(--qb-primary);
            margin-bottom: 2px;
        }
        .qb-compare-card .period {
            color: var(--qb-text-dim);
            font-size: 0.8rem;
            margin-bottom: 18px;
        }
        .qb-compare-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            text-align: left;
        }
        .qb-compare-card ul li {
            padding: 7px 0;
            color: var(--qb-text-muted);
            font-size: 0.88rem;
            border-bottom: 1px solid var(--qb-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .qb-compare-card ul li i {
            color: var(--qb-primary);
            font-size: 0.8rem;
        }

        /* News list */
        .qb-news-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 28px;
        }
        .qb-news-item {
            display: flex;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--qb-border);
            transition: var(--qb-transition);
        }
        .qb-news-item:hover {
            padding-left: 8px;
        }
        .qb-news-item .date {
            min-width: 60px;
            text-align: center;
            background: rgba(0, 230, 118, 0.08);
            border-radius: 10px;
            padding: 10px 8px;
            border: 1px solid rgba(0, 230, 118, 0.2);
            align-self: flex-start;
        }
        .qb-news-item .date .day {
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--qb-primary);
            line-height: 1;
        }
        .qb-news-item .date .month {
            font-size: 0.75rem;
            color: var(--qb-text-muted);
        }
        .qb-news-item .content h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .qb-news-item .content p {
            color: var(--qb-text-muted);
            font-size: 0.88rem;
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .qb-news-item .content .read-more {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--qb-primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .qb-news-sidebar {
            background: var(--qb-bg-card);
            border-radius: var(--qb-radius-lg);
            padding: 22px;
            border: 1px solid var(--qb-border);
            height: fit-content;
            position: sticky;
            top: 90px;
        }
        .qb-news-sidebar h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid rgba(0, 230, 118, 0.3);
        }
        .qb-news-sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .qb-news-sidebar ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-news-sidebar ul li:last-child {
            border-bottom: none;
        }
        .qb-news-sidebar ul li a {
            color: var(--qb-text-muted);
            font-size: 0.88rem;
            line-height: 1.5;
            display: block;
        }
        .qb-news-sidebar ul li a:hover {
            color: var(--qb-primary);
        }

        /* Content calendar */
        .qb-calendar-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 14px;
        }
        .qb-calendar-item {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            padding: 16px;
            text-align: center;
            transition: var(--qb-transition);
        }
        .qb-calendar-item:hover {
            border-color: rgba(0, 230, 118, 0.4);
            transform: translateY(-3px);
        }
        .qb-calendar-item .day-num {
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--qb-primary);
            line-height: 1.1;
        }
        .qb-calendar-item .day-label {
            font-size: 0.78rem;
            color: var(--qb-text-muted);
            margin-bottom: 8px;
        }
        .qb-calendar-item .event {
            font-size: 0.78rem;
            color: #fff;
            font-weight: 600;
            background: rgba(0, 230, 118, 0.1);
            border-radius: 6px;
            padding: 4px 6px;
            line-height: 1.4;
        }

        /* Topic cards */
        .qb-topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .qb-topic-card {
            border-radius: var(--qb-radius-lg);
            overflow: hidden;
            border: 1px solid var(--qb-border);
            background: var(--qb-bg-card);
            transition: var(--qb-transition);
            cursor: pointer;
        }
        .qb-topic-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--qb-shadow-md);
            border-color: rgba(0, 230, 118, 0.3);
        }
        .qb-topic-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }
        .qb-topic-card .body {
            padding: 16px;
        }
        .qb-topic-card .body h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .qb-topic-card .body p {
            font-size: 0.8rem;
            color: var(--qb-text-muted);
            margin: 0;
        }

        /* Rewards */
        .qb-reward-section {
            background: linear-gradient(135deg, #1a0e05 0%, #120a05 100%);
            border-top: 1px solid var(--qb-border);
            border-bottom: 1px solid var(--qb-border);
            padding: 50px 0;
        }
        .qb-reward-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .qb-reward-card {
            background: rgba(255, 230, 150, 0.05);
            border: 1px solid rgba(255, 200, 60, 0.25);
            border-radius: var(--qb-radius-lg);
            padding: 24px 20px;
            text-align: center;
            transition: var(--qb-transition);
        }
        .qb-reward-card:hover {
            border-color: rgba(255, 200, 60, 0.5);
            box-shadow: 0 0 24px rgba(255, 180, 30, 0.15);
            transform: translateY(-4px);
        }
        .qb-reward-card .reward-icon {
            font-size: 2rem;
            color: #ffc83c;
            margin-bottom: 10px;
        }
        .qb-reward-card h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .qb-reward-card p {
            color: var(--qb-text-muted);
            font-size: 0.82rem;
            margin: 0;
        }

        /* Testimonials */
        .qb-testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .qb-testimonial {
            background: var(--qb-bg-card);
            border-radius: var(--qb-radius-lg);
            padding: 22px;
            border: 1px solid var(--qb-border);
            transition: var(--qb-transition);
        }
        .qb-testimonial:hover {
            border-color: rgba(0, 230, 118, 0.25);
            background: var(--qb-bg-card-hover);
        }
        .qb-testimonial .stars {
            color: #ffc83c;
            margin-bottom: 10px;
            font-size: 0.85rem;
        }
        .qb-testimonial .quote {
            color: var(--qb-text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .qb-testimonial .user {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .qb-testimonial .user .avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            color: #000;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
        }
        .qb-testimonial .user .name {
            font-weight: 600;
            color: #fff;
            font-size: 0.88rem;
        }
        .qb-testimonial .user .role {
            color: var(--qb-text-dim);
            font-size: 0.78rem;
        }

        /* CTA */
        .qb-cta-section {
            background: linear-gradient(135deg, #061b12 0%, #061019 100%);
            padding: 60px 0;
            border-top: 1px solid rgba(0, 230, 118, 0.2);
            position: relative;
            overflow: hidden;
        }
        .qb-cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.12;
        }
        .qb-cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .qb-cta-section h2 {
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
        }
        .qb-cta-section p {
            color: var(--qb-text-muted);
            max-width: 600px;
            margin: 0 auto 28px;
            font-size: 1rem;
        }

        /* FAQ */
        .qb-faq-list .accordion-item {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .qb-faq-list .accordion-button {
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
        }
        .qb-faq-list .accordion-button:not(.collapsed) {
            background: rgba(0, 230, 118, 0.06);
            color: var(--qb-primary);
            box-shadow: none;
        }
        .qb-faq-list .accordion-button:focus {
            box-shadow: none;
            border-color: rgba(0, 230, 118, 0.3);
        }
        .qb-faq-list .accordion-button::after {
            filter: invert(70%) sepia(50%) saturate(600%) hue-rotate(80deg);
        }
        .qb-faq-list .accordion-body {
            color: var(--qb-text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            padding: 16px 20px 20px;
        }

        /* Footer */
        .qb-footer {
            background: var(--qb-bg-deep);
            border-top: 1px solid var(--qb-border);
            padding: 46px 0 28px;
        }
        .qb-footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .qb-footer-brand .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            color: #000;
            font-weight: 900;
        }
        .qb-footer p {
            color: var(--qb-text-dim);
            font-size: 0.85rem;
            margin-bottom: 6px;
            line-height: 1.6;
        }
        .qb-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
        }
        .qb-footer-links a {
            color: var(--qb-text-muted);
            font-size: 0.85rem;
        }
        .qb-footer-links a:hover {
            color: var(--qb-primary);
        }
        .qb-footer-bottom {
            border-top: 1px solid var(--qb-border);
            padding-top: 18px;
            margin-top: 28px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--qb-text-dim);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .qb-hero h1 { font-size: 2.4rem; }
            .qb-activity-grid { grid-template-columns: repeat(2, 1fr); }
            .qb-topic-grid { grid-template-columns: repeat(2, 1fr); }
            .qb-news-layout { grid-template-columns: 1fr; }
            .qb-news-sidebar { position: static; }
            .qb-calendar-grid { grid-template-columns: repeat(3, 1fr); }
            .qb-reward-grid { grid-template-columns: repeat(2, 1fr); }
            .qb-testimonial-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .qb-hero { padding: 40px 0 52px; }
            .qb-hero h1 { font-size: 1.9rem; }
            .qb-hero .lead { font-size: 0.98rem; }
            .qb-hero-stats { grid-template-columns: 1fr 1fr 1fr; gap: 10px; padding: 16px 12px; }
            .qb-hero-stat .num { font-size: 1.4rem; }
            .qb-section { padding: 44px 0; }
            .qb-section-header { flex-direction: column; align-items: flex-start; }
            .qb-section-header h2 { font-size: 1.5rem; }
            .qb-activity-grid { grid-template-columns: 1fr; }
            .qb-compare-grid { grid-template-columns: 1fr; }
            .qb-topic-grid { grid-template-columns: 1fr; }
            .qb-calendar-grid { grid-template-columns: repeat(2, 1fr); }
            .qb-reward-grid { grid-template-columns: 1fr; }
            .qb-nav-links { display: none; }
            .qb-nav-links.open {
                display: flex;
                flex-direction: column;
                width: 100%;
                gap: 4px;
                padding-top: 12px;
                border-top: 1px solid var(--qb-border);
            }
            .qb-hamburger { display: block; }
            .qb-navbar { flex-wrap: wrap; }
            .qb-countdown-grid { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 520px) {
            .qb-hero h1 { font-size: 1.6rem; }
            .qb-hero-stats { grid-template-columns: 1fr; gap: 12px; }
            .qb-btn { padding: 11px 20px; font-size: 0.88rem; width: 100%; justify-content: center; }
            .qb-hero-ctas { flex-direction: column; }
            .qb-calendar-grid { grid-template-columns: 1fr; }
            .qb-section-header h2 { font-size: 1.3rem; }
        }

/* roulang page: category2 */
:root {
            --qb-primary: #00e676;
            --qb-primary-dark: #00c853;
            --qb-primary-glow: rgba(0, 230, 118, 0.35);
            --qb-secondary: #00b0ff;
            --qb-accent: #ff6d00;
            --qb-bg-dark: #0a0e17;
            --qb-bg-deep: #060810;
            --qb-bg-card: #111827;
            --qb-bg-card-hover: #1a2332;
            --qb-text: #e8eaf0;
            --qb-text-muted: #9ca3af;
            --qb-text-dim: #6b7280;
            --qb-border: #1f2937;
            --qb-border-light: #2d3748;
            --qb-radius-sm: 8px;
            --qb-radius-md: 14px;
            --qb-radius-lg: 20px;
            --qb-radius-xl: 28px;
            --qb-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
            --qb-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
            --qb-shadow-glow: 0 0 24px rgba(0, 230, 118, 0.25);
            --qb-font: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --qb-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--qb-font);
            background-color: var(--qb-bg-dark);
            color: var(--qb-text);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--qb-primary);
            text-decoration: none;
            transition: var(--qb-transition);
        }
        a:hover {
            color: var(--qb-primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--qb-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: 1280px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header / Nav */
        .qb-header {
            background: var(--qb-bg-deep);
            border-bottom: 1px solid var(--qb-border);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        .qb-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--qb-primary), var(--qb-secondary), transparent);
            opacity: 0.7;
        }
        .qb-navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .qb-logo {
            font-size: 1.55rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .qb-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #000;
            font-weight: 900;
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-logo:hover {
            color: #fff;
            opacity: 0.9;
        }
        .qb-nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .qb-nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--qb-text-muted);
            white-space: nowrap;
            transition: var(--qb-transition);
            position: relative;
        }
        .qb-nav-links li a:hover {
            color: #fff;
            background: rgba(0, 230, 118, 0.08);
        }
        .qb-nav-links li a.active {
            color: var(--qb-primary);
            background: rgba(0, 230, 118, 0.12);
            box-shadow: 0 0 16px rgba(0, 230, 118, 0.2);
        }
        .qb-nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--qb-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--qb-primary-glow);
        }
        .qb-nav-cta {
            background: var(--qb-primary);
            color: #000 !important;
            font-weight: 700;
            padding: 9px 18px !important;
            border-radius: 10px;
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-nav-cta:hover {
            background: var(--qb-primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(0, 230, 118, 0.4);
        }
        .qb-hamburger {
            display: none;
            background: transparent;
            border: 1px solid var(--qb-border-light);
            border-radius: 8px;
            color: var(--qb-text);
            font-size: 1.3rem;
            padding: 6px 12px;
            cursor: pointer;
            transition: var(--qb-transition);
        }
        .qb-hamburger:hover {
            border-color: var(--qb-primary);
            color: var(--qb-primary);
        }

        /* Hero - Crowdfunding Pre-heat */
        .qb-hero {
            background: linear-gradient(160deg, var(--qb-bg-deep) 0%, #0d1525 40%, #0a1a14 100%);
            padding: 70px 0 80px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .qb-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 176, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .qb-hero .container {
            position: relative;
            z-index: 2;
        }
        .qb-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 230, 118, 0.1);
            color: var(--qb-primary);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(0, 230, 118, 0.25);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .qb-hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .qb-hero-title .highlight {
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .qb-hero-subtitle {
            font-size: 1.12rem;
            color: var(--qb-text-muted);
            margin-bottom: 30px;
            max-width: 540px;
            line-height: 1.75;
        }
        .qb-hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 36px;
        }
        .qb-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--qb-primary);
            color: #000;
            font-weight: 700;
            font-size: 0.98rem;
            padding: 12px 26px;
            border-radius: 12px;
            border: none;
            cursor: pointer;
            transition: var(--qb-transition);
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-btn-primary:hover {
            background: var(--qb-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 230, 118, 0.35);
            color: #000;
        }
        .qb-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--qb-text);
            font-weight: 600;
            font-size: 0.98rem;
            padding: 12px 26px;
            border-radius: 12px;
            border: 1px solid var(--qb-border-light);
            cursor: pointer;
            transition: var(--qb-transition);
        }
        .qb-btn-outline:hover {
            border-color: var(--qb-primary);
            color: var(--qb-primary);
            transform: translateY(-2px);
        }
        .qb-hero-stats {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        .qb-hero-stat {
            display: flex;
            flex-direction: column;
        }
        .qb-hero-stat .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .qb-hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--qb-text-dim);
        }

        /* Progress Ring */
        .qb-progress-ring-wrap {
            display: flex;
            flex-direction: column;
            align-items: center;
            background: rgba(17, 24, 39, 0.75);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-lg);
            padding: 30px 24px;
            backdrop-filter: blur(8px);
        }
        .qb-progress-ring {
            position: relative;
            width: 180px;
            height: 180px;
            margin-bottom: 18px;
        }
        .qb-progress-ring svg {
            width: 100%;
            height: 100%;
            transform: rotate(-90deg);
        }
        .qb-progress-ring .ring-bg {
            fill: none;
            stroke: var(--qb-border-light);
            stroke-width: 14;
        }
        .qb-progress-ring .ring-fg {
            fill: none;
            stroke: var(--qb-primary);
            stroke-width: 14;
            stroke-linecap: round;
            transition: stroke-dashoffset 0.8s ease;
            filter: drop-shadow(0 0 10px rgba(0, 230, 118, 0.4));
        }
        .qb-progress-ring .ring-text {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            transform: rotate(0deg);
        }
        .qb-progress-ring .ring-text .ring-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
        }
        .qb-progress-ring .ring-text .ring-label {
            font-size: 0.78rem;
            color: var(--qb-text-muted);
        }
        .qb-progress-goal {
            text-align: center;
            font-size: 0.88rem;
            color: var(--qb-text-muted);
        }
        .qb-progress-goal strong {
            color: var(--qb-primary);
            font-weight: 700;
        }

        /* Tier Preview */
        .qb-tier-preview {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 14px;
        }
        .qb-tier-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(17, 24, 39, 0.7);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-sm);
            padding: 10px 14px;
            transition: var(--qb-transition);
            cursor: default;
        }
        .qb-tier-item:hover {
            border-color: var(--qb-primary);
            background: rgba(0, 230, 118, 0.06);
            transform: translateX(4px);
        }
        .qb-tier-item .tier-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--qb-text);
        }
        .qb-tier-item .tier-price {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--qb-primary);
        }
        .qb-tier-item .tier-badge {
            font-size: 0.68rem;
            background: rgba(0, 230, 118, 0.15);
            color: var(--qb-primary);
            padding: 2px 8px;
            border-radius: 999px;
            font-weight: 600;
        }

        /* Section Base */
        .qb-section {
            padding: 70px 0;
        }
        .qb-section-header {
            margin-bottom: 42px;
        }
        .qb-section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--qb-primary);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 10px;
        }
        .qb-section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--qb-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--qb-primary-glow);
        }
        .qb-section-title {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .qb-section-desc {
            font-size: 1rem;
            color: var(--qb-text-muted);
            max-width: 680px;
            line-height: 1.75;
        }

        /* Pain Point Section */
        .qb-pain-section {
            background: var(--qb-bg-deep);
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-pain-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            padding: 24px 22px;
            height: 100%;
            transition: var(--qb-transition);
            position: relative;
            overflow: hidden;
        }
        .qb-pain-card::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40px;
            height: 40px;
            background: rgba(255, 107, 107, 0.08);
            border-radius: 0 0 0 40px;
        }
        .qb-pain-card:hover {
            border-color: rgba(255, 107, 107, 0.4);
            background: var(--qb-bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-pain-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: rgba(255, 107, 107, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #ff6b6b;
            margin-bottom: 14px;
        }
        .qb-pain-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .qb-pain-card p {
            font-size: 0.92rem;
            color: var(--qb-text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* Solution Section */
        .qb-solution-section {
            background: var(--qb-bg-dark);
        }
        .qb-solution-card {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            padding: 22px 20px;
            height: 100%;
            transition: var(--qb-transition);
        }
        .qb-solution-card:hover {
            border-color: var(--qb-primary);
            background: var(--qb-bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-solution-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 230, 118, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--qb-primary);
        }
        .qb-solution-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .qb-solution-card p {
            font-size: 0.9rem;
            color: var(--qb-text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }

        /* Results / Data Section */
        .qb-results-section {
            background: var(--qb-bg-deep);
            border-top: 1px solid var(--qb-border);
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-data-block {
            text-align: center;
            padding: 30px 16px;
            background: rgba(17, 24, 39, 0.6);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-lg);
            transition: var(--qb-transition);
            height: 100%;
        }
        .qb-data-block:hover {
            border-color: var(--qb-secondary);
            box-shadow: 0 0 20px rgba(0, 176, 255, 0.15);
            transform: translateY(-4px);
        }
        .qb-data-block .data-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .qb-data-block .data-num span {
            font-size: 1.2rem;
            color: var(--qb-primary);
            font-weight: 700;
        }
        .qb-data-block .data-label {
            font-size: 0.9rem;
            color: var(--qb-text-muted);
        }

        /* Match Coverage Section */
        .qb-coverage-section {
            background: var(--qb-bg-dark);
        }
        .qb-match-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            overflow: hidden;
            transition: var(--qb-transition);
            height: 100%;
        }
        .qb-match-card:hover {
            border-color: var(--qb-border-light);
            transform: translateY(-5px);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-match-card .match-img {
            position: relative;
            height: 170px;
            overflow: hidden;
            background: var(--qb-bg-deep);
        }
        .qb-match-card .match-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--qb-transition);
        }
        .qb-match-card:hover .match-img img {
            transform: scale(1.05);
        }
        .qb-match-card .match-img .match-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(0, 0, 0, 0.7);
            color: var(--qb-primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(0, 230, 118, 0.3);
        }
        .qb-match-card .match-body {
            padding: 18px 18px;
        }
        .qb-match-card .match-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .qb-match-card .match-body p {
            font-size: 0.86rem;
            color: var(--qb-text-muted);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .qb-match-card .match-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--qb-text-dim);
        }
        .qb-match-card .match-meta i {
            color: var(--qb-primary);
        }

        /* Live Feature Section */
        .qb-feature-section {
            background: var(--qb-bg-deep);
            border-top: 1px solid var(--qb-border);
        }
        .qb-feature-row {
            display: flex;
            align-items: center;
            gap: 30px;
            padding: 24px 0;
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-feature-row:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .qb-feature-row .feature-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--qb-primary);
            opacity: 0.5;
            flex-shrink: 0;
            width: 60px;
            text-align: center;
        }
        .qb-feature-row .feature-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .qb-feature-row .feature-content p {
            font-size: 0.92rem;
            color: var(--qb-text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* Testimonial Section */
        .qb-testimonial-section {
            background: var(--qb-bg-dark);
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-testimonial-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            padding: 26px 22px;
            height: 100%;
            transition: var(--qb-transition);
            position: relative;
        }
        .qb-testimonial-card::before {
            content: '\201C';
            position: absolute;
            top: 10px;
            right: 18px;
            font-size: 3rem;
            color: rgba(0, 230, 118, 0.15);
            font-family: Georgia, serif;
            line-height: 1;
        }
        .qb-testimonial-card:hover {
            border-color: var(--qb-secondary);
            box-shadow: 0 0 20px rgba(0, 176, 255, 0.12);
            transform: translateY(-3px);
        }
        .qb-testimonial-card .testimonial-text {
            font-size: 0.95rem;
            color: var(--qb-text);
            margin-bottom: 18px;
            line-height: 1.75;
            position: relative;
            z-index: 1;
        }
        .qb-testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .qb-testimonial-card .testimonial-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #000;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .qb-testimonial-card .testimonial-author .author-name {
            font-weight: 700;
            color: #fff;
            font-size: 0.9rem;
        }
        .qb-testimonial-card .testimonial-author .author-role {
            font-size: 0.78rem;
            color: var(--qb-text-dim);
        }

        /* FAQ Section */
        .qb-faq-section {
            background: var(--qb-bg-deep);
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .qb-faq-item {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--qb-transition);
        }
        .qb-faq-item:hover {
            border-color: var(--qb-border-light);
        }
        .qb-faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 700;
            color: #fff;
            font-size: 1rem;
            transition: var(--qb-transition);
            user-select: none;
        }
        .qb-faq-question:hover {
            color: var(--qb-primary);
        }
        .qb-faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(0, 230, 118, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--qb-primary);
            transition: var(--qb-transition);
        }
        .qb-faq-item.open .faq-icon {
            transform: rotate(180deg);
            background: rgba(0, 230, 118, 0.2);
        }
        .qb-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
            color: var(--qb-text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .qb-faq-item.open .qb-faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* CTA Section */
        .qb-cta-section {
            background: linear-gradient(135deg, #0d1525 0%, #0a1a14 100%);
            border-bottom: 1px solid var(--qb-border);
            padding: 80px 0;
        }
        .qb-cta-box {
            background: rgba(17, 24, 39, 0.85);
            border: 1px solid rgba(0, 230, 118, 0.25);
            border-radius: var(--qb-radius-xl);
            padding: 50px 40px;
            text-align: center;
            box-shadow: var(--qb-shadow-glow);
            position: relative;
            overflow: hidden;
        }
        .qb-cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .qb-cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .qb-cta-box p {
            font-size: 1.05rem;
            color: var(--qb-text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.75;
            position: relative;
            z-index: 1;
        }
        .qb-cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .qb-footer {
            background: var(--qb-bg-deep);
            padding: 50px 0 28px;
            border-top: 1px solid var(--qb-border);
        }
        .qb-footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .qb-footer-brand .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: #000;
            font-weight: 900;
        }
        .qb-footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .qb-footer-links li a {
            font-size: 0.88rem;
            color: var(--qb-text-muted);
            transition: var(--qb-transition);
        }
        .qb-footer-links li a:hover {
            color: var(--qb-primary);
        }
        .qb-footer-bottom {
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid var(--qb-border);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--qb-text-dim);
            align-items: center;
        }
        .qb-footer-bottom a {
            color: var(--qb-text-dim);
        }
        .qb-footer-bottom a:hover {
            color: var(--qb-primary);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .qb-hamburger {
                display: inline-block;
            }
            .qb-nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 0 8px;
                gap: 4px;
            }
            .qb-nav-links.show {
                display: flex;
            }
            .qb-nav-links li {
                width: 100%;
            }
            .qb-nav-links li a {
                display: block;
                padding: 10px 14px;
                font-size: 1rem;
            }
            .qb-hero-title {
                font-size: 2.1rem;
            }
            .qb-hero {
                padding: 50px 0 56px;
            }
            .qb-section {
                padding: 50px 0;
            }
            .qb-section-title {
                font-size: 1.6rem;
            }
            .qb-cta-box {
                padding: 34px 22px;
            }
            .qb-cta-box h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .qb-hero-title {
                font-size: 1.7rem;
            }
            .qb-hero-stat .stat-num {
                font-size: 1.4rem;
            }
            .qb-progress-ring {
                width: 140px;
                height: 140px;
            }
            .qb-progress-ring .ring-text .ring-num {
                font-size: 1.7rem;
            }
            .qb-section-title {
                font-size: 1.4rem;
            }
            .qb-data-block .data-num {
                font-size: 1.8rem;
            }
            .qb-cta-box h2 {
                font-size: 1.3rem;
            }
            .qb-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .qb-hero-title {
                font-size: 1.4rem;
            }
            .qb-hero-btn {
                width: 100%;
                justify-content: center;
            }
            .qb-hero-stats {
                gap: 18px;
            }
            .qb-progress-ring {
                width: 110px;
                height: 110px;
            }
            .qb-progress-ring .ring-text .ring-num {
                font-size: 1.3rem;
            }
            .qb-section {
                padding: 38px 0;
            }
            .qb-cta-box {
                padding: 26px 16px;
            }
        }

/* roulang page: category1 */
:root {
            --qb-primary: #00e676;
            --qb-primary-dark: #00c853;
            --qb-primary-glow: rgba(0, 230, 118, 0.35);
            --qb-secondary: #00b0ff;
            --qb-accent: #ff6d00;
            --qb-bg-dark: #0a0e17;
            --qb-bg-deep: #060810;
            --qb-bg-card: #111827;
            --qb-bg-card-hover: #1a2332;
            --qb-text: #e8eaf0;
            --qb-text-muted: #9ca3af;
            --qb-text-dim: #6b7280;
            --qb-border: #1f2937;
            --qb-border-light: #2d3748;
            --qb-radius-sm: 8px;
            --qb-radius-md: 14px;
            --qb-radius-lg: 20px;
            --qb-radius-xl: 28px;
            --qb-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
            --qb-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
            --qb-shadow-glow: 0 0 24px rgba(0, 230, 118, 0.25);
            --qb-font: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --qb-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--qb-font);
            background-color: var(--qb-bg-dark);
            color: var(--qb-text);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
        }
        a {
            color: var(--qb-primary);
            text-decoration: none;
            transition: var(--qb-transition);
        }
        a:hover {
            color: var(--qb-primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--qb-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1280px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header / Nav */
        .qb-header {
            background: var(--qb-bg-deep);
            border-bottom: 1px solid var(--qb-border);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        .qb-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--qb-primary), var(--qb-secondary), transparent);
            opacity: 0.7;
        }
        .qb-navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .qb-logo {
            font-size: 1.55rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .qb-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #000;
            font-weight: 900;
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-logo:hover {
            color: #fff;
            opacity: 0.9;
        }
        .qb-nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .qb-nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--qb-text-muted);
            white-space: nowrap;
            transition: var(--qb-transition);
            position: relative;
        }
        .qb-nav-links li a:hover {
            color: #fff;
            background: rgba(0, 230, 118, 0.08);
        }
        .qb-nav-links li a.active {
            color: var(--qb-primary);
            background: rgba(0, 230, 118, 0.12);
            box-shadow: 0 0 16px rgba(0, 230, 118, 0.2);
        }
        .qb-nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--qb-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--qb-primary-glow);
        }
        .qb-nav-cta {
            background: var(--qb-primary);
            color: #000 !important;
            font-weight: 700;
            padding: 9px 18px !important;
            border-radius: 10px;
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-nav-cta:hover {
            background: var(--qb-primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(0, 230, 118, 0.4);
        }
        .qb-hamburger {
            display: none;
            background: transparent;
            border: 1px solid var(--qb-border-light);
            border-radius: 8px;
            color: var(--qb-text);
            font-size: 1.3rem;
            padding: 6px 12px;
            cursor: pointer;
            transition: var(--qb-transition);
        }
        .qb-hamburger:hover {
            border-color: var(--qb-primary);
            color: var(--qb-primary);
        }

        /* Hero — 促销主视觉 */
        .qb-hero {
            background: linear-gradient(165deg, var(--qb-bg-deep) 0%, #0d1525 35%, #0a1a14 100%);
            position: relative;
            overflow: hidden;
            padding: 70px 0 80px;
            border-bottom: 1px solid var(--qb-border);
        }
        .qb-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.18), transparent 70%);
            pointer-events: none;
        }
        .qb-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 176, 255, 0.12), transparent 70%);
            pointer-events: none;
        }
        .qb-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 109, 0, 0.15);
            color: var(--qb-accent);
            border: 1px solid rgba(255, 109, 0, 0.35);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }
        .qb-hero-badge i {
            font-size: 0.75rem;
        }
        .qb-hero h1 {
            font-size: clamp(2.1rem, 5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .qb-hero h1 .highlight {
            color: var(--qb-primary);
            text-shadow: 0 0 30px var(--qb-primary-glow);
        }
        .qb-hero p.lead {
            font-size: 1.1rem;
            color: var(--qb-text-muted);
            max-width: 620px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .qb-hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .qb-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--qb-transition);
            letter-spacing: 0.3px;
        }
        .qb-btn-primary {
            background: var(--qb-primary);
            color: #000;
            box-shadow: 0 4px 20px rgba(0, 230, 118, 0.35);
        }
        .qb-btn-primary:hover {
            background: var(--qb-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 230, 118, 0.45);
            color: #000;
        }
        .qb-btn-outline {
            background: transparent;
            color: var(--qb-text);
            border: 1px solid var(--qb-border-light);
        }
        .qb-btn-outline:hover {
            border-color: var(--qb-primary);
            color: var(--qb-primary);
            background: rgba(0, 230, 118, 0.06);
        }
        .qb-hero-panel {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-lg);
            padding: 24px;
            box-shadow: var(--qb-shadow-md);
            position: relative;
        }
        .qb-hero-panel .match-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--qb-border);
            gap: 12px;
            flex-wrap: wrap;
        }
        .qb-hero-panel .match-row:last-child {
            border-bottom: none;
        }
        .qb-hero-panel .team {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--qb-text);
        }
        .qb-hero-panel .team i {
            color: var(--qb-text-dim);
            font-size: 0.8rem;
        }
        .qb-hero-panel .score {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--qb-primary);
            text-shadow: 0 0 12px var(--qb-primary-glow);
            white-space: nowrap;
        }
        .qb-hero-panel .status {
            font-size: 0.7rem;
            color: var(--qb-text-dim);
            text-align: right;
        }
        .qb-live-dot {
            display: inline-block;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--qb-accent);
            margin-right: 4px;
            animation: qb-pulse 1.2s infinite;
        }
        @keyframes qb-pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.35); }
        }

        /* Sections 通用 */
        .qb-section {
            padding: 70px 0;
            position: relative;
        }
        .qb-section-alt {
            background: var(--qb-bg-deep);
        }
        .qb-section-heading {
            margin-bottom: 40px;
        }
        .qb-section-heading .kicker {
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--qb-primary);
            margin-bottom: 8px;
        }
        .qb-section-heading h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.3rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .qb-section-heading p {
            color: var(--qb-text-muted);
            max-width: 720px;
            font-size: 0.98rem;
        }

        /* 卡片 */
        .qb-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            padding: 24px;
            transition: var(--qb-transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .qb-card:hover {
            background: var(--qb-bg-card-hover);
            border-color: var(--qb-border-light);
            transform: translateY(-4px);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 230, 118, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--qb-primary);
            margin-bottom: 16px;
        }
        .qb-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .qb-card p {
            color: var(--qb-text-muted);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* 数据块 */
        .qb-stat-block {
            text-align: center;
            padding: 28px 16px;
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            transition: var(--qb-transition);
        }
        .qb-stat-block:hover {
            border-color: var(--qb-primary);
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-stat-block .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--qb-primary);
            text-shadow: 0 0 20px var(--qb-primary-glow);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .qb-stat-block .stat-label {
            font-size: 0.82rem;
            color: var(--qb-text-muted);
        }

        /* 标签 */
        .qb-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin: 3px;
        }
        .qb-tag-green {
            background: rgba(0, 230, 118, 0.12);
            color: var(--qb-primary);
            border: 1px solid rgba(0, 230, 118, 0.25);
        }
        .qb-tag-blue {
            background: rgba(0, 176, 255, 0.12);
            color: var(--qb-secondary);
            border: 1px solid rgba(0, 176, 255, 0.25);
        }
        .qb-tag-orange {
            background: rgba(255, 109, 0, 0.12);
            color: var(--qb-accent);
            border: 1px solid rgba(255, 109, 0, 0.25);
        }

        /* 图片区域 */
        .qb-img-frame {
            border-radius: var(--qb-radius-lg);
            overflow: hidden;
            border: 1px solid var(--qb-border);
            box-shadow: var(--qb-shadow-md);
            position: relative;
        }
        .qb-img-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .qb-img-frame::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(6, 8, 16, 0.7) 100%);
            pointer-events: none;
        }

        /* 流程步骤 */
        .qb-step {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 0;
            border-bottom: 1px dashed var(--qb-border);
        }
        .qb-step:last-child {
            border-bottom: none;
        }
        .qb-step-num {
            width: 40px;
            height: 40px;
            min-width: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            color: #000;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            box-shadow: 0 2px 12px rgba(0, 230, 118, 0.3);
        }
        .qb-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .qb-step p {
            color: var(--qb-text-muted);
            font-size: 0.875rem;
            margin-bottom: 0;
        }

        /* FAQ */
        .qb-faq-item {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--qb-transition);
        }
        .qb-faq-item:hover {
            border-color: var(--qb-border-light);
        }
        .qb-faq-question {
            padding: 16px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-weight: 700;
            font-size: 0.95rem;
            color: #fff;
            transition: var(--qb-transition);
        }
        .qb-faq-question:hover {
            color: var(--qb-primary);
        }
        .qb-faq-question .faq-icon {
            font-size: 0.8rem;
            transition: transform 0.3s ease;
            color: var(--qb-text-muted);
            flex-shrink: 0;
        }
        .qb-faq-item.open .qb-faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--qb-primary);
        }
        .qb-faq-answer {
            padding: 0 20px 16px;
            font-size: 0.9rem;
            color: var(--qb-text-muted);
            display: none;
        }
        .qb-faq-item.open .qb-faq-answer {
            display: block;
        }

        /* CTA */
        .qb-cta {
            background: linear-gradient(140deg, var(--qb-bg-deep) 0%, #0d1f18 55%, #0a1420 100%);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-xl);
            padding: 50px 40px;
            position: relative;
            overflow: hidden;
        }
        .qb-cta::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.2), transparent 70%);
            pointer-events: none;
        }
        .qb-cta h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .qb-cta p {
            color: var(--qb-text-muted);
            max-width: 600px;
            margin-bottom: 24px;
        }

        /* Footer */
        .qb-footer {
            background: var(--qb-bg-deep);
            border-top: 1px solid var(--qb-border);
            padding: 50px 0 24px;
            margin-top: 0;
        }
        .qb-footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .qb-footer-brand .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            color: #000;
            font-weight: 900;
        }
        .qb-footer p {
            color: var(--qb-text-muted);
            font-size: 0.9rem;
            margin-bottom: 6px;
        }
        .qb-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .qb-footer-links a {
            color: var(--qb-text-muted);
            font-size: 0.85rem;
            transition: var(--qb-transition);
        }
        .qb-footer-links a:hover {
            color: var(--qb-primary);
        }
        .qb-footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            padding-top: 20px;
            margin-top: 30px;
            border-top: 1px solid var(--qb-border);
            font-size: 0.78rem;
            color: var(--qb-text-dim);
        }
        .qb-footer-bottom a {
            color: var(--qb-text-muted);
        }
        .qb-footer-bottom a:hover {
            color: var(--qb-primary);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .qb-hero {
                padding: 50px 0 60px;
            }
            .qb-section {
                padding: 50px 0;
            }
            .qb-nav-links li a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 768px) {
            .qb-hamburger {
                display: block;
            }
            .qb-nav-links {
                display: none;
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
                padding: 12px 0;
                gap: 2px;
            }
            .qb-nav-links.show {
                display: flex;
            }
            .qb-nav-links li {
                width: 100%;
            }
            .qb-nav-links li a {
                display: block;
                width: 100%;
                padding: 10px 14px;
            }
            .qb-hero {
                padding: 36px 0 44px;
            }
            .qb-hero h1 {
                font-size: 2rem;
            }
            .qb-hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .qb-btn {
                justify-content: center;
            }
            .qb-cta {
                padding: 30px 24px;
            }
            .qb-section {
                padding: 40px 0;
            }
            .qb-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .qb-hero h1 {
                font-size: 1.6rem;
            }
            .qb-hero p.lead {
                font-size: 0.95rem;
            }
            .qb-hero-panel {
                padding: 14px;
            }
            .qb-hero-panel .match-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .qb-hero-panel .status {
                text-align: left;
            }
            .qb-stat-block .stat-number {
                font-size: 1.7rem;
            }
            .qb-card {
                padding: 18px;
            }
        }

/* roulang page: category3 */
:root {
            --qb-primary: #00e676;
            --qb-primary-dark: #00c853;
            --qb-primary-glow: rgba(0, 230, 118, 0.35);
            --qb-secondary: #00b0ff;
            --qb-accent: #ff6d00;
            --qb-bg-dark: #0a0e17;
            --qb-bg-deep: #060810;
            --qb-bg-card: #111827;
            --qb-bg-card-hover: #1a2332;
            --qb-text: #e8eaf0;
            --qb-text-muted: #9ca3af;
            --qb-text-dim: #6b7280;
            --qb-border: #1f2937;
            --qb-border-light: #2d3748;
            --qb-radius-sm: 8px;
            --qb-radius-md: 14px;
            --qb-radius-lg: 20px;
            --qb-radius-xl: 28px;
            --qb-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
            --qb-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
            --qb-shadow-glow: 0 0 24px rgba(0, 230, 118, 0.25);
            --qb-font: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --qb-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--qb-font);
            background-color: var(--qb-bg-dark);
            color: var(--qb-text);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--qb-primary);
            text-decoration: none;
            transition: var(--qb-transition);
        }
        a:hover {
            color: var(--qb-primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--qb-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: 1280px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header / Nav */
        .qb-header {
            background: var(--qb-bg-deep);
            border-bottom: 1px solid var(--qb-border);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        .qb-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--qb-primary), var(--qb-secondary), transparent);
            opacity: 0.7;
        }
        .qb-navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .qb-logo {
            font-size: 1.55rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .qb-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #000;
            font-weight: 900;
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-logo:hover {
            color: #fff;
            opacity: 0.9;
        }
        .qb-nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .qb-nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--qb-text-muted);
            white-space: nowrap;
            transition: var(--qb-transition);
            position: relative;
        }
        .qb-nav-links li a:hover {
            color: #fff;
            background: rgba(0, 230, 118, 0.08);
        }
        .qb-nav-links li a.active {
            color: var(--qb-primary);
            background: rgba(0, 230, 118, 0.12);
            box-shadow: 0 0 16px rgba(0, 230, 118, 0.2);
        }
        .qb-nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--qb-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--qb-primary-glow);
        }
        .qb-nav-cta {
            background: var(--qb-primary);
            color: #000 !important;
            font-weight: 700;
            padding: 9px 18px !important;
            border-radius: 10px;
            box-shadow: var(--qb-shadow-glow);
        }
        .qb-nav-cta:hover {
            background: var(--qb-primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(0, 230, 118, 0.4);
        }
        .qb-hamburger {
            display: none;
            background: transparent;
            border: 1px solid var(--qb-border-light);
            border-radius: 8px;
            color: var(--qb-text);
            font-size: 1.3rem;
            padding: 6px 12px;
            cursor: pointer;
            transition: var(--qb-transition);
        }
        .qb-hamburger:hover {
            border-color: var(--qb-primary);
            color: var(--qb-primary);
        }

        /* Hero - Trial Application Style */
        .qb-hero-trial {
            background: linear-gradient(160deg, var(--qb-bg-deep) 0%, #0d1525 40%, #0a1a14 100%);
            padding: 70px 0 80px;
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .qb-hero-trial::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -60px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .qb-hero-trial::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 176, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .qb-hero-trial .container {
            position: relative;
            z-index: 2;
        }
        .qb-trial-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-bottom: 24px;
        }
        .qb-trial-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 30px;
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid rgba(0, 230, 118, 0.3);
            color: var(--qb-primary);
            font-size: 0.85rem;
            font-weight: 600;
            white-space: nowrap;
            transition: var(--qb-transition);
        }
        .qb-trial-badge:hover {
            background: rgba(0, 230, 118, 0.18);
            border-color: var(--qb-primary);
            box-shadow: 0 0 16px rgba(0, 230, 118, 0.25);
        }
        .qb-trial-badge i {
            font-size: 0.9rem;
        }
        .qb-hero-trial h1 {
            font-size: clamp(2rem, 4vw, 3.2rem);
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .qb-hero-trial h1 .qb-highlight {
            color: var(--qb-primary);
            text-shadow: 0 0 30px rgba(0, 230, 118, 0.4);
        }
        .qb-hero-trial .qb-hero-desc {
            font-size: 1.1rem;
            color: var(--qb-text-muted);
            max-width: 560px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .qb-hero-trial .qb-apply-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-primary-dark));
            color: #000;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 32px;
            border-radius: 12px;
            border: none;
            box-shadow: 0 4px 24px rgba(0, 230, 118, 0.35);
            transition: var(--qb-transition);
            cursor: pointer;
        }
        .qb-hero-trial .qb-apply-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 230, 118, 0.5);
            color: #000;
        }
        .qb-hero-trial .qb-apply-btn:focus-visible {
            outline: 3px solid var(--qb-primary);
            outline-offset: 3px;
        }
        .qb-hero-panel {
            background: rgba(17, 24, 39, 0.85);
            border: 1px solid var(--qb-border-light);
            border-radius: var(--qb-radius-lg);
            padding: 28px;
            backdrop-filter: blur(12px);
            box-shadow: var(--qb-shadow-md);
            position: relative;
        }
        .qb-hero-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            border-radius: var(--qb-radius-lg) var(--qb-radius-lg) 0 0;
            background: linear-gradient(90deg, var(--qb-primary), var(--qb-secondary));
        }
        .qb-hero-panel h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .qb-qualification-list {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
        }
        .qb-qualification-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--qb-border);
            color: var(--qb-text-muted);
            font-size: 0.92rem;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .qb-qualification-list li:last-child {
            border-bottom: none;
        }
        .qb-qualification-list li i {
            color: var(--qb-primary);
            margin-top: 4px;
            font-size: 0.85rem;
        }
        .qb-panel-note {
            font-size: 0.82rem;
            color: var(--qb-text-dim);
            margin: 0;
            padding-top: 8px;
            border-top: 1px solid var(--qb-border);
        }

        /* Section Base */
        .qb-section {
            padding: 64px 0;
        }
        .qb-section-sm {
            padding: 44px 0;
        }
        .qb-section-dark {
            background: var(--qb-bg-deep);
        }
        .qb-section-card-bg {
            background: linear-gradient(180deg, var(--qb-bg-dark) 0%, #0d1520 100%);
        }
        .qb-section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--qb-primary);
            background: rgba(0, 230, 118, 0.08);
            border: 1px solid rgba(0, 230, 118, 0.25);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
        }
        .qb-section-title {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.3px;
            line-height: 1.3;
        }
        .qb-section-subtitle {
            font-size: 1.05rem;
            color: var(--qb-text-muted);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Pain Points */
        .qb-pain-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            margin-top: 32px;
        }
        .qb-pain-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            padding: 24px;
            transition: var(--qb-transition);
            position: relative;
            overflow: hidden;
        }
        .qb-pain-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: var(--qb-accent);
            opacity: 0.6;
        }
        .qb-pain-card:hover {
            border-color: var(--qb-border-light);
            background: var(--qb-bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-pain-card .qb-pain-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 109, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--qb-accent);
            margin-bottom: 14px;
        }
        .qb-pain-card h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .qb-pain-card p {
            font-size: 0.92rem;
            color: var(--qb-text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* Solution */
        .qb-solution-wrap {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .qb-solution-img {
            flex: 1 1 380px;
            max-width: 480px;
            border-radius: var(--qb-radius-lg);
            overflow: hidden;
            box-shadow: var(--qb-shadow-lg, 0 12px 40px rgba(0, 0, 0, 0.5));
            border: 1px solid var(--qb-border-light);
            position: relative;
        }
        .qb-solution-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(6, 8, 16, 0.7), transparent);
            pointer-events: none;
        }
        .qb-solution-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .qb-solution-img:hover img {
            transform: scale(1.03);
        }
        .qb-solution-content {
            flex: 1 1 380px;
        }
        .qb-solution-content p {
            color: var(--qb-text-muted);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .qb-solution-points {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .qb-solution-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 8px 0;
            color: var(--qb-text);
            font-size: 0.95rem;
        }
        .qb-solution-points li i {
            color: var(--qb-primary);
            margin-top: 5px;
        }

        /* Feature Cards */
        .qb-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin-top: 32px;
        }
        .qb-feature-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            padding: 24px;
            text-align: left;
            transition: var(--qb-transition);
            position: relative;
        }
        .qb-feature-card:hover {
            border-color: rgba(0, 230, 118, 0.3);
            background: var(--qb-bg-card-hover);
            transform: translateY(-2px);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-feature-card .qb-feat-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 230, 118, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--qb-primary);
            margin-bottom: 14px;
        }
        .qb-feature-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .qb-feature-card p {
            font-size: 0.9rem;
            color: var(--qb-text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* Results / Stats */
        .qb-stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 32px;
        }
        .qb-stat-card {
            background: linear-gradient(145deg, var(--qb-bg-card) 0%, #0d1525 100%);
            border: 1px solid var(--qb-border-light);
            border-radius: var(--qb-radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: var(--qb-transition);
        }
        .qb-stat-card:hover {
            border-color: rgba(0, 230, 118, 0.3);
            box-shadow: var(--qb-shadow-glow);
            transform: translateY(-3px);
        }
        .qb-stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--qb-primary);
            display: block;
            margin-bottom: 6px;
            text-shadow: 0 0 20px rgba(0, 230, 118, 0.3);
        }
        .qb-stat-label {
            font-size: 0.9rem;
            color: var(--qb-text-muted);
            font-weight: 500;
        }

        /* Testimonials */
        .qb-testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 32px;
        }
        .qb-testimonial-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            padding: 24px;
            transition: var(--qb-transition);
            position: relative;
        }
        .qb-testimonial-card:hover {
            border-color: rgba(0, 176, 255, 0.3);
            background: var(--qb-bg-card-hover);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-testimonial-card .qb-quote-icon {
            font-size: 2rem;
            color: rgba(0, 230, 118, 0.3);
            margin-bottom: 10px;
            display: block;
        }
        .qb-testimonial-card p {
            color: var(--qb-text);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 16px;
            font-style: italic;
        }
        .qb-testimonial-card .qb-testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .qb-testimonial-card .qb-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #000;
            font-weight: 700;
            font-size: 1rem;
        }
        .qb-testimonial-card .qb-author-name {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
        }
        .qb-testimonial-card .qb-author-role {
            font-size: 0.8rem;
            color: var(--qb-text-dim);
        }

        /* Process Steps */
        .qb-steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 32px;
        }
        .qb-step-card {
            text-align: center;
            padding: 10px;
            position: relative;
        }
        .qb-step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 230, 118, 0.1);
            border: 2px solid var(--qb-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--qb-primary);
            margin: 0 auto 14px;
            box-shadow: 0 0 20px rgba(0, 230, 118, 0.2);
        }
        .qb-step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .qb-step-card p {
            font-size: 0.9rem;
            color: var(--qb-text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* Scenarios */
        .qb-scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin-top: 32px;
        }
        .qb-scenario-card {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md);
            padding: 26px;
            transition: var(--qb-transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .qb-scenario-card:hover {
            border-color: var(--qb-border-light);
            background: var(--qb-bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-scenario-card .qb-scenario-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--qb-secondary);
            background: rgba(0, 176, 255, 0.1);
            border: 1px solid rgba(0, 176, 255, 0.25);
            padding: 4px 12px;
            border-radius: 20px;
            width: fit-content;
        }
        .qb-scenario-card h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
        }
        .qb-scenario-card p {
            font-size: 0.92rem;
            color: var(--qb-text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* FAQ */
        .qb-accordion .accordion-item {
            background: var(--qb-bg-card);
            border: 1px solid var(--qb-border);
            border-radius: var(--qb-radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--qb-transition);
        }
        .qb-accordion .accordion-item:hover {
            border-color: var(--qb-border-light);
        }
        .qb-accordion .accordion-button {
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.98rem;
            padding: 18px 20px;
            box-shadow: none;
            border: none;
            transition: var(--qb-transition);
        }
        .qb-accordion .accordion-button:not(.collapsed) {
            background: rgba(0, 230, 118, 0.06);
            color: var(--qb-primary);
            box-shadow: none;
        }
        .qb-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--qb-primary);
        }
        .qb-accordion .accordion-button::after {
            filter: invert(0.8);
        }
        .qb-accordion .accordion-body {
            color: var(--qb-text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            padding: 0 20px 18px;
            background: rgba(0, 0, 0, 0.15);
        }

        /* CTA Section */
        .qb-cta-section {
            background: linear-gradient(160deg, #0d1525 0%, #0a1a14 50%, #0a0e17 100%);
            border-top: 1px solid var(--qb-border);
            border-bottom: 1px solid var(--qb-border);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }
        .qb-cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(0, 230, 118, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .qb-cta-box {
            background: rgba(17, 24, 39, 0.85);
            border: 1px solid var(--qb-border-light);
            border-radius: var(--qb-radius-xl);
            padding: 40px;
            text-align: center;
            position: relative;
            backdrop-filter: blur(10px);
            box-shadow: var(--qb-shadow-md);
        }
        .qb-cta-box h2 {
            font-size: clamp(1.5rem, 2.5vw, 2.1rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .qb-cta-box p {
            color: var(--qb-text-muted);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .qb-cta-btns {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .qb-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--qb-primary);
            color: #000;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: 10px;
            border: none;
            font-size: 0.98rem;
            cursor: pointer;
            transition: var(--qb-transition);
        }
        .qb-btn-primary:hover {
            background: var(--qb-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(0, 230, 118, 0.4);
            color: #000;
        }
        .qb-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--qb-text);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 10px;
            border: 1px solid var(--qb-border-light);
            font-size: 0.98rem;
            cursor: pointer;
            transition: var(--qb-transition);
        }
        .qb-btn-outline:hover {
            border-color: var(--qb-primary);
            color: var(--qb-primary);
            background: rgba(0, 230, 118, 0.06);
        }

        /* Footer */
        .qb-footer {
            background: var(--qb-bg-deep);
            border-top: 1px solid var(--qb-border);
            padding: 50px 0 30px;
        }
        .qb-footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .qb-footer-brand .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #000;
            font-weight: 900;
        }
        .qb-footer p {
            color: var(--qb-text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .qb-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .qb-footer-links li a {
            color: var(--qb-text-muted);
            font-size: 0.88rem;
            transition: var(--qb-transition);
        }
        .qb-footer-links li a:hover {
            color: var(--qb-primary);
            padding-left: 4px;
        }
        .qb-footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            margin-top: 32px;
            border-top: 1px solid var(--qb-border);
            font-size: 0.8rem;
            color: var(--qb-text-dim);
        }
        .qb-footer-bottom a {
            color: var(--qb-text-dim);
        }
        .qb-footer-bottom a:hover {
            color: var(--qb-primary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .qb-hero-trial {
                padding: 50px 0 60px;
                min-height: auto;
            }
            .qb-section {
                padding: 48px 0;
            }
            .qb-solution-wrap {
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .qb-hamburger {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .qb-nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 12px 0;
                background: var(--qb-bg-deep);
                border-top: 1px solid var(--qb-border);
            }
            .qb-nav-links.show {
                display: flex;
            }
            .qb-nav-links li a {
                display: block;
                padding: 10px 14px;
                border-radius: 6px;
                font-size: 0.95rem;
            }
            .qb-nav-cta {
                text-align: center;
                padding: 10px 16px !important;
            }
            .qb-hero-trial h1 {
                font-size: 1.7rem;
            }
            .qb-hero-trial .qb-hero-desc {
                font-size: 1rem;
            }
            .qb-hero-panel {
                padding: 20px;
                margin-top: 28px;
            }
            .qb-trial-badge-row {
                gap: 10px;
            }
            .qb-trial-badge {
                font-size: 0.75rem;
                padding: 6px 12px;
            }
            .qb-section-title {
                font-size: 1.5rem;
            }
            .qb-stat-number {
                font-size: 1.8rem;
            }
            .qb-cta-box {
                padding: 28px 20px;
            }
            .qb-solution-wrap {
                flex-direction: column;
            }
            .qb-solution-img {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .qb-hero-trial {
                padding: 36px 0 44px;
            }
            .qb-hero-trial h1 {
                font-size: 1.45rem;
            }
            .qb-hero-trial .qb-apply-btn {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.95rem;
            }
            .qb-trial-badge-row {
                flex-direction: column;
                gap: 8px;
            }
            .qb-trial-badge {
                justify-content: center;
            }
            .qb-section {
                padding: 36px 0;
            }
            .qb-section-sm {
                padding: 28px 0;
            }
            .qb-pain-grid,
            .qb-feature-grid,
            .qb-stats-row,
            .qb-testimonial-grid,
            .qb-steps-grid,
            .qb-scenario-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .qb-cta-btns {
                flex-direction: column;
            }
            .qb-btn-primary,
            .qb-btn-outline {
                width: 100%;
                justify-content: center;
            }
            .qb-footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .qb-accordion .accordion-button {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
        }

        /* Focus visible for buttons */
        button:focus-visible {
            outline: 2px solid var(--qb-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* Add subtle animation */
        @keyframes qbFadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .qb-hero-trial .container > * {
            animation: qbFadeUp 0.6s ease-out both;
        }
        .qb-hero-trial .container > *:nth-child(2) {
            animation-delay: 0.1s;
        }
        .qb-hero-trial .container > *:nth-child(3) {
            animation-delay: 0.2s;
        }
        .qb-hero-trial .container > *:nth-child(4) {
            animation-delay: 0.3s;
        }

/* roulang page: category4 */
:root {
        --qb-primary: #00e676;
        --qb-primary-dark: #00c853;
        --qb-primary-glow: rgba(0, 230, 118, 0.35);
        --qb-secondary: #00b0ff;
        --qb-accent: #ff6d00;
        --qb-bg-dark: #0a0e17;
        --qb-bg-deep: #060810;
        --qb-bg-card: #111827;
        --qb-bg-card-hover: #1a2332;
        --qb-text: #e8eaf0;
        --qb-text-muted: #9ca3af;
        --qb-text-dim: #6b7280;
        --qb-border: #1f2937;
        --qb-border-light: #2d3748;
        --qb-radius-sm: 8px;
        --qb-radius-md: 14px;
        --qb-radius-lg: 20px;
        --qb-radius-xl: 28px;
        --qb-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
        --qb-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
        --qb-shadow-glow: 0 0 24px rgba(0, 230, 118, 0.25);
        --qb-font: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        --qb-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    html {
        scroll-behavior: smooth;
        -webkit-tap-highlight-color: transparent;
    }
    body {
        font-family: var(--qb-font);
        background-color: var(--qb-bg-dark);
        color: var(--qb-text);
        line-height: 1.7;
        overflow-x: hidden;
        min-height: 100vh;
        margin: 0;
        padding: 0;
    }
    a {
        color: var(--qb-primary);
        text-decoration: none;
        transition: var(--qb-transition);
    }
    a:hover {
        color: var(--qb-primary-dark);
    }
    a:focus-visible {
        outline: 2px solid var(--qb-primary);
        outline-offset: 3px;
        border-radius: 4px;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    .container {
        max-width: 1280px;
        padding-left: 20px;
        padding-right: 20px;
    }
    /* Header / Nav */
    .qb-header {
        background: var(--qb-bg-deep);
        border-bottom: 1px solid var(--qb-border);
        padding: 0;
        position: sticky;
        top: 0;
        z-index: 1050;
        box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
    }
    .qb-header::after {
        content: '';
        position: absolute;
        bottom: -1px;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(90deg, transparent, var(--qb-primary), var(--qb-secondary), transparent);
        opacity: 0.7;
    }
    .qb-navbar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0;
        flex-wrap: wrap;
        gap: 12px;
    }
    .qb-logo {
        font-size: 1.55rem;
        font-weight: 800;
        letter-spacing: 0.5px;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 10px;
        white-space: nowrap;
    }
    .qb-logo .logo-icon {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.15rem;
        color: #000;
        font-weight: 900;
        box-shadow: var(--qb-shadow-glow);
    }
    .qb-logo:hover {
        color: #fff;
        opacity: 0.9;
    }
    .qb-nav-links {
        display: flex;
        align-items: center;
        gap: 6px;
        flex-wrap: wrap;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .qb-nav-links li a {
        display: inline-block;
        padding: 8px 14px;
        border-radius: 8px;
        font-size: 0.925rem;
        font-weight: 500;
        color: var(--qb-text-muted);
        white-space: nowrap;
        transition: var(--qb-transition);
        position: relative;
    }
    .qb-nav-links li a:hover {
        color: #fff;
        background: rgba(0, 230, 118, 0.08);
    }
    .qb-nav-links li a.active {
        color: var(--qb-primary);
        background: rgba(0, 230, 118, 0.12);
        box-shadow: 0 0 16px rgba(0, 230, 118, 0.2);
    }
    .qb-nav-links li a.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 2px;
        background: var(--qb-primary);
        border-radius: 2px;
        box-shadow: 0 0 8px var(--qb-primary-glow);
    }
    .qb-nav-cta {
        background: var(--qb-primary);
        color: #000 !important;
        font-weight: 700;
        padding: 9px 18px !important;
        border-radius: 10px;
        box-shadow: var(--qb-shadow-glow);
    }
    .qb-nav-cta:hover {
        background: var(--qb-primary-dark) !important;
        transform: translateY(-1px);
        box-shadow: 0 4px 20px rgba(0, 230, 118, 0.4);
    }
    .qb-hamburger {
        display: none;
        background: transparent;
        border: 1px solid var(--qb-border-light);
        border-radius: 8px;
        color: var(--qb-text);
        font-size: 1.3rem;
        padding: 6px 12px;
        cursor: pointer;
        transition: var(--qb-transition);
    }
    .qb-hamburger:hover {
        border-color: var(--qb-primary);
        color: var(--qb-primary);
    }
    /* Hero */
    .qb-hero {
        position: relative;
        background: linear-gradient(165deg, #060810 0%, #0d1525 35%, #0a1a14 100%);
        padding: 80px 0 70px;
        overflow: hidden;
    }
    .qb-hero::before {
        content: '';
        position: absolute;
        top: -30%;
        right: -10%;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(0, 230, 118, 0.08) 0%, transparent 65%);
        pointer-events: none;
    }
    .qb-hero::after {
        content: '';
        position: absolute;
        bottom: -20%;
        left: -5%;
        width: 500px;
        height: 500px;
        background: radial-gradient(circle, rgba(0, 176, 255, 0.06) 0%, transparent 65%);
        pointer-events: none;
    }
    .qb-hero .container {
        position: relative;
        z-index: 2;
    }
    .qb-hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 6px 16px;
        border-radius: 50px;
        background: rgba(0, 230, 118, 0.12);
        border: 1px solid rgba(0, 230, 118, 0.3);
        color: var(--qb-primary);
        font-size: 0.82rem;
        font-weight: 600;
        margin-bottom: 18px;
    }
    .qb-hero h1 {
        font-size: 3rem;
        font-weight: 800;
        line-height: 1.2;
        color: #fff;
        margin-bottom: 18px;
        letter-spacing: 0.5px;
    }
    .qb-hero h1 .highlight {
        background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .qb-hero-lead {
        font-size: 1.15rem;
        color: var(--qb-text-muted);
        max-width: 600px;
        margin-bottom: 28px;
        line-height: 1.8;
    }
    .qb-hero-actions {
        display: flex;
        gap: 14px;
        flex-wrap: wrap;
        align-items: center;
    }
    .qb-btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 13px 28px;
        border-radius: 12px;
        font-size: 1rem;
        font-weight: 700;
        border: none;
        cursor: pointer;
        transition: var(--qb-transition);
        letter-spacing: 0.3px;
    }
    .qb-btn-primary {
        background: var(--qb-primary);
        color: #000;
        box-shadow: var(--qb-shadow-glow);
    }
    .qb-btn-primary:hover {
        background: var(--qb-primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 28px rgba(0, 230, 118, 0.4);
        color: #000;
    }
    .qb-btn-outline {
        background: transparent;
        color: var(--qb-text);
        border: 1px solid var(--qb-border-light);
    }
    .qb-btn-outline:hover {
        border-color: var(--qb-primary);
        color: var(--qb-primary);
        background: rgba(0, 230, 118, 0.05);
    }
    .qb-hero-stats {
        display: flex;
        gap: 32px;
        margin-top: 36px;
        flex-wrap: wrap;
    }
    .qb-hero-stat {
        text-align: left;
    }
    .qb-hero-stat .num {
        font-size: 2rem;
        font-weight: 800;
        color: var(--qb-primary);
        line-height: 1.2;
    }
    .qb-hero-stat .label {
        font-size: 0.82rem;
        color: var(--qb-text-dim);
        margin-top: 4px;
    }
    /* Section general */
    .qb-section {
        padding: 70px 0;
    }
    .qb-section-title {
        font-size: 2rem;
        font-weight: 800;
        color: #fff;
        margin-bottom: 10px;
        letter-spacing: 0.5px;
    }
    .qb-section-sub {
        font-size: 1rem;
        color: var(--qb-text-muted);
        max-width: 640px;
        margin-bottom: 40px;
        line-height: 1.8;
    }
    /* Card */
    .qb-card {
        background: var(--qb-bg-card);
        border: 1px solid var(--qb-border);
        border-radius: var(--qb-radius-md);
        padding: 28px;
        height: 100%;
        transition: var(--qb-transition);
    }
    .qb-card:hover {
        background: var(--qb-bg-card-hover);
        border-color: var(--qb-border-light);
        transform: translateY(-4px);
        box-shadow: var(--qb-shadow-md);
    }
    .qb-card-icon {
        width: 52px;
        height: 52px;
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        margin-bottom: 16px;
        background: rgba(0, 230, 118, 0.1);
        color: var(--qb-primary);
        border: 1px solid rgba(0, 230, 118, 0.2);
    }
    .qb-card h3 {
        font-size: 1.2rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 10px;
    }
    .qb-card p {
        font-size: 0.92rem;
        color: var(--qb-text-muted);
        margin: 0;
        line-height: 1.7;
    }
    /* Badge */
    .qb-badge {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        padding: 4px 12px;
        border-radius: 50px;
        font-size: 0.78rem;
        font-weight: 600;
    }
    .qb-badge-green {
        background: rgba(0, 230, 118, 0.12);
        color: var(--qb-primary);
        border: 1px solid rgba(0, 230, 118, 0.25);
    }
    .qb-badge-orange {
        background: rgba(255, 109, 0, 0.12);
        color: var(--qb-accent);
        border: 1px solid rgba(255, 109, 0, 0.25);
    }
    .qb-badge-blue {
        background: rgba(0, 176, 255, 0.12);
        color: var(--qb-secondary);
        border: 1px solid rgba(0, 176, 255, 0.25);
    }
    /* Pain points section */
    .qb-pain-section {
        background: var(--qb-bg-deep);
        border-top: 1px solid var(--qb-border);
        border-bottom: 1px solid var(--qb-border);
    }
    .qb-pain-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .qb-pain-list li {
        display: flex;
        gap: 14px;
        align-items: flex-start;
        padding: 18px 0;
        border-bottom: 1px solid var(--qb-border);
    }
    .qb-pain-list li:last-child {
        border-bottom: none;
    }
    .qb-pain-list .icon-box {
        flex-shrink: 0;
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: rgba(255, 109, 0, 0.12);
        color: var(--qb-accent);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
    }
    .qb-pain-list h4 {
        font-size: 1.05rem;
        font-weight: 700;
        color: #fff;
        margin: 0 0 4px;
    }
    .qb-pain-list p {
        font-size: 0.9rem;
        color: var(--qb-text-muted);
        margin: 0;
    }
    /* Solution */
    .qb-solution-item {
        display: flex;
        gap: 16px;
        align-items: flex-start;
        padding: 22px;
        background: var(--qb-bg-card);
        border-radius: var(--qb-radius-md);
        border: 1px solid var(--qb-border);
        height: 100%;
        transition: var(--qb-transition);
    }
    .qb-solution-item:hover {
        border-color: var(--qb-primary);
        box-shadow: var(--qb-shadow-sm);
    }
    .qb-solution-num {
        flex-shrink: 0;
        width: 44px;
        height: 44px;
        border-radius: 12px;
        background: linear-gradient(135deg, rgba(0, 230, 118, 0.15), rgba(0, 176, 255, 0.15));
        color: var(--qb-primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
        font-size: 1.15rem;
    }
    .qb-solution-item h4 {
        font-size: 1.08rem;
        font-weight: 700;
        color: #fff;
        margin: 0 0 6px;
    }
    .qb-solution-item p {
        font-size: 0.9rem;
        color: var(--qb-text-muted);
        margin: 0;
    }
    /* Results / Stats */
    .qb-results-section {
        background: linear-gradient(165deg, #0a1a14 0%, #0d1525 50%, #060810 100%);
        border-top: 1px solid var(--qb-border);
        border-bottom: 1px solid var(--qb-border);
    }
    .qb-stat-card {
        text-align: center;
        padding: 28px 20px;
        background: rgba(17, 24, 39, 0.75);
        border-radius: var(--qb-radius-md);
        border: 1px solid var(--qb-border);
        height: 100%;
        transition: var(--qb-transition);
    }
    .qb-stat-card:hover {
        border-color: var(--qb-primary);
        box-shadow: var(--qb-shadow-glow);
    }
    .qb-stat-card .num {
        font-size: 2.6rem;
        font-weight: 800;
        color: var(--qb-primary);
        line-height: 1.1;
    }
    .qb-stat-card .label {
        font-size: 0.9rem;
        color: var(--qb-text-muted);
        margin-top: 8px;
    }
    /* Testimonials */
    .qb-testimonial {
        background: var(--qb-bg-card);
        border: 1px solid var(--qb-border);
        border-radius: var(--qb-radius-md);
        padding: 26px;
        height: 100%;
        transition: var(--qb-transition);
    }
    .qb-testimonial:hover {
        border-color: var(--qb-border-light);
        box-shadow: var(--qb-shadow-sm);
    }
    .qb-testimonial .quote {
        font-size: 0.93rem;
        color: var(--qb-text-muted);
        line-height: 1.8;
        margin-bottom: 16px;
        font-style: italic;
    }
    .qb-testimonial .author {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .qb-testimonial .avatar {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: linear-gradient(135deg, rgba(0, 230, 118, 0.3), rgba(0, 176, 255, 0.3));
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--qb-primary);
        font-weight: 700;
        font-size: 1rem;
    }
    .qb-testimonial .name {
        font-size: 0.9rem;
        font-weight: 700;
        color: #fff;
    }
    .qb-testimonial .role {
        font-size: 0.78rem;
        color: var(--qb-text-dim);
    }
    /* Process */
    .qb-process-step {
        display: flex;
        gap: 16px;
        align-items: flex-start;
        padding: 20px;
        background: var(--qb-bg-card);
        border-radius: var(--qb-radius-md);
        border: 1px solid var(--qb-border);
        height: 100%;
    }
    .qb-process-step .step-num {
        flex-shrink: 0;
        width: 52px;
        height: 52px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
        color: #000;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
        font-size: 1.2rem;
        box-shadow: var(--qb-shadow-glow);
    }
    .qb-process-step h4 {
        font-size: 1.05rem;
        font-weight: 700;
        color: #fff;
        margin: 0 0 6px;
    }
    .qb-process-step p {
        font-size: 0.88rem;
        color: var(--qb-text-muted);
        margin: 0;
    }
    /* FAQ */
    .qb-faq-item {
        background: var(--qb-bg-card);
        border: 1px solid var(--qb-border);
        border-radius: var(--qb-radius-md);
        margin-bottom: 12px;
        overflow: hidden;
        transition: var(--qb-transition);
    }
    .qb-faq-item:hover {
        border-color: var(--qb-border-light);
    }
    .qb-faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 22px;
        cursor: pointer;
        font-weight: 700;
        font-size: 0.98rem;
        color: #fff;
        gap: 12px;
        user-select: none;
    }
    .qb-faq-question .faq-icon {
        flex-shrink: 0;
        transition: transform 0.3s ease;
        color: var(--qb-primary);
    }
    .qb-faq-item.open .faq-icon {
        transform: rotate(180deg);
    }
    .qb-faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
    }
    .qb-faq-answer-inner {
        padding: 0 22px 18px;
    }
    .qb-faq-answer-inner p {
        font-size: 0.9rem;
        color: var(--qb-text-muted);
        margin: 0;
        line-height: 1.8;
    }
    /* CTA Section */
    .qb-cta-section {
        background: linear-gradient(165deg, #0a1a14 0%, #0d1525 60%, #060810 100%);
        border-top: 1px solid var(--qb-border);
        border-bottom: 1px solid var(--qb-border);
        position: relative;
        overflow: hidden;
    }
    .qb-cta-section::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(0, 230, 118, 0.06) 0%, transparent 65%);
        pointer-events: none;
    }
    .qb-cta-box {
        text-align: center;
        padding: 60px 40px;
        background: rgba(17, 24, 39, 0.8);
        border: 1px solid var(--qb-border-light);
        border-radius: var(--qb-radius-lg);
        position: relative;
        z-index: 1;
    }
    .qb-cta-box h2 {
        font-size: 2.2rem;
        font-weight: 800;
        color: #fff;
        margin-bottom: 14px;
    }
    .qb-cta-box p {
        font-size: 1.05rem;
        color: var(--qb-text-muted);
        max-width: 560px;
        margin: 0 auto 28px;
        line-height: 1.8;
    }
    .qb-cta-actions {
        display: flex;
        gap: 14px;
        justify-content: center;
        flex-wrap: wrap;
    }
    /* Image section */
    .qb-image-box {
        border-radius: var(--qb-radius-lg);
        overflow: hidden;
        border: 1px solid var(--qb-border);
        box-shadow: var(--qb-shadow-md);
    }
    .qb-image-box img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .qb-image-overlay {
        position: relative;
        border-radius: var(--qb-radius-md);
        overflow: hidden;
        border: 1px solid var(--qb-border);
    }
    .qb-image-overlay img {
        width: 100%;
        height: 280px;
        object-fit: cover;
    }
    .qb-image-overlay .overlay-badge {
        position: absolute;
        top: 14px;
        right: 14px;
    }
    .qb-image-overlay .overlay-caption {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 20px;
        background: linear-gradient(transparent, rgba(6, 8, 16, 0.9));
        font-size: 0.9rem;
        font-weight: 600;
        color: #fff;
    }
    /* Footer */
    .qb-footer {
        background: var(--qb-bg-deep);
        border-top: 1px solid var(--qb-border);
        padding: 50px 0 30px;
    }
    .qb-footer-brand {
        font-size: 1.35rem;
        font-weight: 800;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 14px;
    }
    .qb-footer-brand .logo-icon {
        width: 34px;
        height: 34px;
        border-radius: 8px;
        background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
        color: #000;
        font-weight: 900;
    }
    .qb-footer p {
        font-size: 0.9rem;
        color: var(--qb-text-muted);
        line-height: 1.8;
        margin-bottom: 8px;
    }
    .qb-footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    .qb-footer-links li a {
        color: var(--qb-text-muted);
        font-size: 0.88rem;
        transition: var(--qb-transition);
    }
    .qb-footer-links li a:hover {
        color: var(--qb-primary);
    }
    .qb-footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        margin-top: 36px;
        padding-top: 20px;
        border-top: 1px solid var(--qb-border);
        font-size: 0.78rem;
        color: var(--qb-text-dim);
    }
    .qb-footer-bottom a {
        color: var(--qb-text-muted);
        font-size: 0.78rem;
        transition: var(--qb-transition);
    }
    .qb-footer-bottom a:hover {
        color: var(--qb-primary);
    }
    /* Mobile responsive */
    @media (max-width: 992px) {
        .qb-hamburger {
            display: block;
        }
        .qb-nav-links {
            display: none;
            width: 100%;
            flex-direction: column;
            align-items: stretch;
            padding: 12px 0 8px;
            gap: 4px;
        }
        .qb-nav-links.open {
            display: flex;
        }
        .qb-nav-links li a {
            display: block;
            padding: 12px 16px;
            width: 100%;
        }
        .qb-hero h1 {
            font-size: 2.2rem;
        }
        .qb-section {
            padding: 50px 0;
        }
        .qb-section-title {
            font-size: 1.6rem;
        }
        .qb-hero-stats {
            gap: 20px;
        }
        .qb-hero-stat .num {
            font-size: 1.5rem;
        }
    }
    @media (max-width: 768px) {
        .qb-hero {
            padding: 50px 0 40px;
        }
        .qb-hero h1 {
            font-size: 1.8rem;
        }
        .qb-hero-lead {
            font-size: 1rem;
        }
        .qb-cta-box {
            padding: 36px 20px;
        }
        .qb-cta-box h2 {
            font-size: 1.6rem;
        }
        .qb-image-overlay img {
            height: 200px;
        }
        .qb-footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
    }
    @media (max-width: 520px) {
        .qb-hero h1 {
            font-size: 1.5rem;
        }
        .qb-hero-stats {
            gap: 16px;
            flex-direction: column;
        }
        .qb-stat-card .num {
            font-size: 2rem;
        }
        .qb-btn {
            padding: 11px 20px;
            font-size: 0.9rem;
        }
        .qb-section-title {
            font-size: 1.4rem;
        }
        .qb-container {
            padding-left: 14px;
            padding-right: 14px;
        }
    }

/* roulang page: category5 */
:root {
  --qb-primary: #00e676;
  --qb-primary-dark: #00c853;
  --qb-primary-glow: rgba(0, 230, 118, 0.35);
  --qb-secondary: #00b0ff;
  --qb-accent: #ff6d00;
  --qb-bg-dark: #0a0e17;
  --qb-bg-deep: #060810;
  --qb-bg-card: #111827;
  --qb-bg-card-hover: #1a2332;
  --qb-text: #e8eaf0;
  --qb-text-muted: #9ca3af;
  --qb-text-dim: #6b7280;
  --qb-border: #1f2937;
  --qb-border-light: #2d3748;
  --qb-radius-sm: 8px;
  --qb-radius-md: 14px;
  --qb-radius-lg: 20px;
  --qb-radius-xl: 28px;
  --qb-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --qb-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --qb-shadow-glow: 0 0 24px rgba(0, 230, 118, 0.25);
  --qb-font: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --qb-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}
body {
  font-family: var(--qb-font);
  background-color: var(--qb-bg-dark);
  color: var(--qb-text);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}
a {
  color: var(--qb-primary);
  text-decoration: none;
  transition: var(--qb-transition);
}
a:hover {
  color: var(--qb-primary-dark);
}
a:focus-visible {
  outline: 2px solid var(--qb-primary);
  outline-offset: 3px;
  border-radius: 4px;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container {
  max-width: 1280px;
  padding-left: 20px;
  padding-right: 20px;
}
.container {
  max-width: 1280px;
}

/* Header / Nav */
.qb-header {
  background: var(--qb-bg-deep);
  border-bottom: 1px solid var(--qb-border);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1050;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}
.qb-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--qb-primary), var(--qb-secondary), transparent);
  opacity: 0.7;
}
.qb-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  flex-wrap: wrap;
  gap: 12px;
}
.qb-logo {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.qb-logo .logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: #000;
  font-weight: 900;
  box-shadow: var(--qb-shadow-glow);
}
.qb-logo:hover {
  color: #fff;
  opacity: 0.9;
}
.qb-nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.qb-nav-links li a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--qb-text-muted);
  white-space: nowrap;
  transition: var(--qb-transition);
  position: relative;
}
.qb-nav-links li a:hover {
  color: #fff;
  background: rgba(0, 230, 118, 0.08);
}
.qb-nav-links li a.active {
  color: var(--qb-primary);
  background: rgba(0, 230, 118, 0.12);
  box-shadow: 0 0 16px rgba(0, 230, 118, 0.2);
}
.qb-nav-links li a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--qb-primary);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--qb-primary-glow);
}
.qb-nav-cta {
  background: var(--qb-primary);
  color: #000 !important;
  font-weight: 700;
  padding: 9px 18px !important;
  border-radius: 10px;
  box-shadow: var(--qb-shadow-glow);
}
.qb-nav-cta:hover {
  background: var(--qb-primary-dark) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0, 230, 118, 0.4);
}
.qb-hamburger {
  display: none;
  background: transparent;
  border: 1px solid var(--qb-border-light);
  border-radius: 8px;
  color: var(--qb-text);
  font-size: 1.3rem;
  padding: 6px 12px;
  cursor: pointer;
  transition: var(--qb-transition);
}
.qb-hamburger:hover {
  border-color: var(--qb-primary);
  color: var(--qb-primary);
}

/* Hero */
.qb-hero {
  background: linear-gradient(160deg, var(--qb-bg-deep) 0%, #0d1525 40%, #0a1a14 100%);
  padding: 64px 0 56px;
  position: relative;
  overflow: hidden;
}
.qb-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 70% 20%, rgba(0, 176, 255, 0.12) 0%, transparent 50%), radial-gradient(ellipse at 30% 80%, rgba(0, 230, 118, 0.08) 0%, transparent 50%);
  pointer-events: none;
}
.qb-hero .container {
  position: relative;
  z-index: 1;
}
.qb-hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 20px;
  background: rgba(0, 230, 118, 0.12);
  color: var(--qb-primary);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid rgba(0, 230, 118, 0.25);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.qb-hero h1 {
  font-size: 2.65rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 18px;
}
.qb-hero .qb-hero-sub {
  font-size: 1.12rem;
  color: var(--qb-text-muted);
  max-width: 620px;
  line-height: 1.75;
  margin-bottom: 28px;
}
.qb-hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}
.qb-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: var(--qb-transition);
  text-align: center;
  justify-content: center;
  letter-spacing: 0.3px;
}
.qb-btn-primary {
  background: var(--qb-primary);
  color: #000;
  box-shadow: var(--qb-shadow-glow);
}
.qb-btn-primary:hover {
  background: var(--qb-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(0, 230, 118, 0.4);
  color: #000;
}
.qb-btn-outline {
  background: transparent;
  color: var(--qb-text);
  border: 1px solid var(--qb-border-light);
}
.qb-btn-outline:hover {
  border-color: var(--qb-primary);
  color: var(--qb-primary);
  background: rgba(0, 230, 118, 0.06);
  transform: translateY(-2px);
}
.qb-btn-accent {
  background: var(--qb-accent);
  color: #fff;
  box-shadow: 0 0 20px rgba(255, 109, 0, 0.3);
}
.qb-btn-accent:hover {
  background: #e65100;
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(255, 109, 0, 0.45);
  color: #fff;
}
.qb-btn-sm {
  padding: 9px 18px;
  font-size: 0.86rem;
  border-radius: 10px;
}

/* Hero main card */
.qb-hero-card {
  background: var(--qb-bg-card);
  border: 1px solid var(--qb-border);
  border-radius: var(--qb-radius-lg);
  padding: 32px;
  box-shadow: var(--qb-shadow-md);
  position: relative;
  overflow: hidden;
}
.qb-hero-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--qb-primary), var(--qb-secondary), var(--qb-accent));
}
.qb-hero-card h2 {
  font-size: 1.36rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.qb-hero-card p {
  color: var(--qb-text-muted);
  font-size: 0.95rem;
  margin-bottom: 18px;
}
.qb-hero-card .qb-card-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--qb-text-dim);
  border-top: 1px solid var(--qb-border);
  padding-top: 16px;
  margin-top: 6px;
}
.qb-hero-card .qb-card-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Section */
.qb-section {
  padding: 72px 0;
  position: relative;
}
.qb-section-alt {
  background: var(--qb-bg-deep);
}
.qb-section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--qb-secondary);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.qb-section-title {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.3;
}
.qb-section-desc {
  font-size: 1.05rem;
  color: var(--qb-text-muted);
  max-width: 720px;
  line-height: 1.75;
}

/* Pain point section */
.qb-pain-card {
  background: var(--qb-bg-card);
  border: 1px solid var(--qb-border);
  border-radius: var(--qb-radius-md);
  padding: 26px;
  height: 100%;
  transition: var(--qb-transition);
}
.qb-pain-card:hover {
  background: var(--qb-bg-card-hover);
  border-color: rgba(255, 109, 0, 0.4);
  transform: translateY(-3px);
  box-shadow: var(--qb-shadow-md);
}
.qb-pain-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 16px;
  background: rgba(255, 109, 0, 0.12);
  color: var(--qb-accent);
  border: 1px solid rgba(255, 109, 0, 0.25);
}
.qb-pain-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.qb-pain-card p {
  font-size: 0.9rem;
  color: var(--qb-text-muted);
  margin: 0;
}

/* Info card */
.qb-info-card {
  background: var(--qb-bg-card);
  border: 1px solid var(--qb-border);
  border-radius: var(--qb-radius-lg);
  padding: 28px;
  height: 100%;
  transition: var(--qb-transition);
}
.qb-info-card:hover {
  background: var(--qb-bg-card-hover);
  border-color: rgba(0, 230, 118, 0.4);
  transform: translateY(-3px);
  box-shadow: var(--qb-shadow-md);
}
.qb-info-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 14px;
  background: rgba(0, 230, 118, 0.1);
  color: var(--qb-primary);
  border: 1px solid rgba(0, 230, 118, 0.22);
}
.qb-info-card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.qb-info-card p {
  font-size: 0.9rem;
  color: var(--qb-text-muted);
  margin: 0;
}

/* Data / stats */
.qb-stat-block {
  background: var(--qb-bg-card);
  border: 1px solid var(--qb-border);
  border-radius: var(--qb-radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: var(--qb-transition);
}
.qb-stat-block:hover {
  border-color: var(--qb-primary);
  box-shadow: var(--qb-shadow-glow);
}
.qb-stat-num {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--qb-primary);
  line-height: 1.2;
  margin-bottom: 6px;
}
.qb-stat-label {
  font-size: 0.86rem;
  color: var(--qb-text-muted);
}

/* Coverage */
.qb-coverage-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.qb-coverage-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--qb-border);
  font-size: 0.95rem;
  color: var(--qb-text);
}
.qb-coverage-list li:last-child {
  border-bottom: none;
}
.qb-coverage-list li i {
  color: var(--qb-primary);
  width: 22px;
  text-align: center;
  font-size: 0.85rem;
}

/* Testimonial */
.qb-testimonial {
  background: var(--qb-bg-card);
  border: 1px solid var(--qb-border);
  border-radius: var(--qb-radius-lg);
  padding: 30px;
  height: 100%;
  transition: var(--qb-transition);
  display: flex;
  flex-direction: column;
}
.qb-testimonial:hover {
  background: var(--qb-bg-card-hover);
  border-color: rgba(0, 176, 255, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--qb-shadow-md);
}
.qb-testimonial-stars {
  color: #ffc107;
  font-size: 0.95rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}
.qb-testimonial-text {
  font-size: 0.95rem;
  color: var(--qb-text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}
.qb-testimonial-author {
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
}
.qb-testimonial-tag {
  font-size: 0.75rem;
  color: var(--qb-text-dim);
  margin-top: 2px;
}

/* Steps */
.qb-step-card {
  background: var(--qb-bg-card);
  border: 1px solid var(--qb-border);
  border-radius: var(--qb-radius-md);
  padding: 26px;
  height: 100%;
  position: relative;
  text-align: center;
  transition: var(--qb-transition);
}
.qb-step-card:hover {
  border-color: var(--qb-primary);
  transform: translateY(-3px);
  box-shadow: var(--qb-shadow-md);
}
.qb-step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
  color: #000;
  margin: 0 auto 14px;
  box-shadow: var(--qb-shadow-glow);
}
.qb-step-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.qb-step-card p {
  font-size: 0.88rem;
  color: var(--qb-text-muted);
  margin: 0;
}

/* FAQ */
.qb-faq-item {
  background: var(--qb-bg-card);
  border: 1px solid var(--qb-border);
  border-radius: var(--qb-radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--qb-transition);
}
.qb-faq-item:hover {
  border-color: var(--qb-border-light);
}
.qb-faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  transition: var(--qb-transition);
}
.qb-faq-question:hover {
  color: var(--qb-primary);
}
.qb-faq-question i {
  transition: var(--qb-transition);
  color: var(--qb-text-dim);
  flex-shrink: 0;
}
.qb-faq-item.open .qb-faq-question i {
  transform: rotate(180deg);
  color: var(--qb-primary);
}
.qb-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.qb-faq-item.open .qb-faq-answer {
  max-height: 500px;
}
.qb-faq-answer p {
  padding: 0 24px 20px;
  font-size: 0.92rem;
  color: var(--qb-text-muted);
  margin: 0;
  line-height: 1.75;
}

/* CTA section */
.qb-cta {
  background: linear-gradient(150deg, #0a1a14 0%, #0d1525 50%, #1a0d05 100%);
  border: 1px solid var(--qb-border);
  border-radius: var(--qb-radius-xl);
  padding: 56px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.qb-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 230, 118, 0.08) 0%, transparent 60%);
  pointer-events: none;
}
.qb-cta h2 {
  font-size: 1.9rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
}
.qb-cta p {
  font-size: 1.05rem;
  color: var(--qb-text-muted);
  max-width: 560px;
  margin: 0 auto 24px;
  position: relative;
}

/* Footer */
.qb-footer {
  background: var(--qb-bg-deep);
  border-top: 1px solid var(--qb-border);
  padding: 56px 0 0;
  margin-top: 40px;
}
.qb-footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.qb-footer-brand .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #000;
  font-weight: 900;
}
.qb-footer p {
  color: var(--qb-text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 12px;
}
.qb-footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
}
.qb-footer-links li a {
  color: var(--qb-text-muted);
  font-size: 0.9rem;
  transition: var(--qb-transition);
}
.qb-footer-links li a:hover {
  color: var(--qb-primary);
}
.qb-footer-bottom {
  border-top: 1px solid var(--qb-border);
  padding: 20px 0;
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  font-size: 0.8rem;
  color: var(--qb-text-dim);
}
.qb-footer-bottom a {
  color: var(--qb-text-dim);
}
.qb-footer-bottom a:hover {
  color: var(--qb-primary);
}

/* Responsive */
@media (max-width: 1024px) {
  .qb-hero h1 {
    font-size: 2.2rem;
  }
  .qb-hero-card {
    padding: 22px;
  }
  .qb-section {
    padding: 50px 0;
  }
  .qb-section-title {
    font-size: 1.7rem;
  }
}
@media (max-width: 768px) {
  .qb-navbar {
    padding: 10px 0;
  }
  .qb-hamburger {
    display: block;
  }
  .qb-nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 0 6px;
  }
  .qb-nav-links.open {
    display: flex;
  }
  .qb-nav-links li a {
    padding: 10px 14px;
    font-size: 0.95rem;
  }
  .qb-nav-links li a.active::after {
    bottom: 4px;
  }
  .qb-hero {
    padding: 40px 0 40px;
  }
  .qb-hero h1 {
    font-size: 1.8rem;
  }
  .qb-hero-sub {
    font-size: 1rem !important;
  }
  .qb-section {
    padding: 40px 0;
  }
  .qb-section-title {
    font-size: 1.45rem;
  }
  .qb-cta {
    padding: 36px 20px;
  }
  .qb-cta h2 {
    font-size: 1.4rem;
  }
}
@media (max-width: 520px) {
  .qb-hero h1 {
    font-size: 1.5rem;
  }
  .qb-hero-label {
    font-size: 0.75rem;
    padding: 5px 12px;
  }
  .qb-hero-card {
    padding: 16px;
  }
  .qb-hero-card h2 {
    font-size: 1.15rem;
  }
  .qb-btn {
    padding: 10px 18px;
    font-size: 0.86rem;
  }
  .qb-stat-num {
    font-size: 1.8rem;
  }
  .qb-stat-block {
    padding: 18px 14px;
  }
  .qb-footer-bottom {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}

/* roulang page: category6 */
:root {
 --qb-primary: #00e676;
 --qb-primary-dark: #00c853;
 --qb-primary-glow: rgba(0, 230, 118, 0.35);
 --qb-secondary: #00b0ff;
 --qb-accent: #ff6d00;
 --qb-bg-dark: #0a0e17;
 --qb-bg-deep: #060810;
 --qb-bg-card: #111827;
 --qb-bg-card-hover: #1a2332;
 --qb-text: #e8eaf0;
 --qb-text-muted: #9ca3af;
 --qb-text-dim: #6b7280;
 --qb-border: #1f2937;
 --qb-border-light: #2d3748;
 --qb-radius-sm: 8px;
 --qb-radius-md: 14px;
 --qb-radius-lg: 20px;
 --qb-radius-xl: 28px;
 --qb-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
 --qb-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
 --qb-shadow-glow: 0 0 24px rgba(0, 230, 118, 0.25);
 --qb-font: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
 --qb-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}
html {
 scroll-behavior: smooth;
 -webkit-tap-highlight-color: transparent;
}
body {
 font-family: var(--qb-font);
 background-color: var(--qb-bg-dark);
 color: var(--qb-text);
 line-height: 1.7;
 overflow-x: hidden;
 min-height: 100vh;
}
a {
 color: var(--qb-primary);
 text-decoration: none;
 transition: var(--qb-transition);
}
a:hover {
 color: var(--qb-primary-dark);
}
a:focus-visible {
 outline: 2px solid var(--qb-primary);
 outline-offset: 3px;
 border-radius: 4px;
}
img {
 max-width: 100%;
 height: auto;
 display: block;
}
.container {
 max-width: 1280px;
 padding-left: 20px;
 padding-right: 20px;
}
.qb-header {
 background: var(--qb-bg-deep);
 border-bottom: 1px solid var(--qb-border);
 padding: 0;
 position: sticky;
 top: 0;
 z-index: 1050;
 box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}
.qb-header::after {
 content: '';
 position: absolute;
 bottom: -1px;
 left: 0;
 right: 0;
 height: 2px;
 background: linear-gradient(90deg, transparent, var(--qb-primary), var(--qb-secondary), transparent);
 opacity: 0.7;
}
.qb-navbar {
 display: flex;
 align-items: center;
 justify-content: space-between;
 padding: 14px 0;
 flex-wrap: wrap;
 gap: 12px;
}
.qb-logo {
 font-size: 1.55rem;
 font-weight: 800;
 letter-spacing: 0.5px;
 color: #fff;
 display: flex;
 align-items: center;
 gap: 10px;
 white-space: nowrap;
}
.qb-logo .logo-icon {
 width: 38px;
 height: 38px;
 border-radius: 10px;
 background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
 display: flex;
 align-items: center;
 justify-content: center;
 font-size: 1.15rem;
 color: #000;
 font-weight: 900;
 box-shadow: var(--qb-shadow-glow);
}
.qb-logo:hover {
 color: #fff;
 opacity: 0.9;
}
.qb-nav-links {
 display: flex;
 align-items: center;
 gap: 6px;
 flex-wrap: wrap;
 list-style: none;
 margin: 0;
 padding: 0;
}
.qb-nav-links li a {
 display: inline-block;
 padding: 8px 14px;
 border-radius: 8px;
 font-size: 0.925rem;
 font-weight: 500;
 color: var(--qb-text-muted);
 white-space: nowrap;
 transition: var(--qb-transition);
 position: relative;
}
.qb-nav-links li a:hover {
 color: #fff;
 background: rgba(0, 230, 118, 0.08);
}
.qb-nav-links li a.active {
 color: var(--qb-primary);
 background: rgba(0, 230, 118, 0.12);
 box-shadow: 0 0 16px rgba(0, 230, 118, 0.2);
}
.qb-nav-links li a.active::after {
 content: '';
 position: absolute;
 bottom: 2px;
 left: 50%;
 transform: translateX(-50%);
 width: 20px;
 height: 2px;
 background: var(--qb-primary);
 border-radius: 2px;
 box-shadow: 0 0 8px var(--qb-primary-glow);
}
.qb-nav-cta {
 background: var(--qb-primary);
 color: #000 !important;
 font-weight: 700;
 padding: 9px 18px !important;
 border-radius: 10px;
 box-shadow: var(--qb-shadow-glow);
}
.qb-nav-cta:hover {
 background: var(--qb-primary-dark) !important;
 transform: translateY(-1px);
 box-shadow: 0 4px 20px rgba(0, 230, 118, 0.4);
}
.qb-hamburger {
 display: none;
 background: transparent;
 border: 1px solid var(--qb-border-light);
 border-radius: 8px;
 color: var(--qb-text);
 font-size: 1.3rem;
 padding: 6px 12px;
 cursor: pointer;
 transition: var(--qb-transition);
}
.qb-hamburger:hover {
 border-color: var(--qb-primary);
 color: var(--qb-primary);
}
.qb-hero {
 background: linear-gradient(160deg, var(--qb-bg-deep) 0%, #0d1525 40%, #0a1a14 100%);
 padding: 60px 0 70px;
 position: relative;
 overflow: hidden;
}
.qb-hero::before {
 content: '';
 position: absolute;
 top: -30%;
 right: -10%;
 width: 600px;
 height: 600px;
 background: radial-gradient(circle, rgba(0, 230, 118, 0.08), transparent 60%);
 border-radius: 50%;
 pointer-events: none;
}
.qb-hero::after {
 content: '';
 position: absolute;
 bottom: -20%;
 left: -5%;
 width: 500px;
 height: 500px;
 background: radial-gradient(circle, rgba(0, 176, 255, 0.06), transparent 60%);
 border-radius: 50%;
 pointer-events: none;
}
.qb-badge {
 display: inline-block;
 padding: 4px 12px;
 border-radius: 20px;
 font-size: 0.78rem;
 font-weight: 600;
 letter-spacing: 0.3px;
 background: rgba(0, 230, 118, 0.14);
 color: var(--qb-primary);
 border: 1px solid rgba(0, 230, 118, 0.25);
}
.qb-badge-blue {
 background: rgba(0, 176, 255, 0.14);
 color: var(--qb-secondary);
 border: 1px solid rgba(0, 176, 255, 0.25);
}
.qb-badge-orange {
 background: rgba(255, 109, 0, 0.14);
 color: var(--qb-accent);
 border: 1px solid rgba(255, 109, 0, 0.25);
}
.qb-hero h1 {
 font-size: 2.9rem;
 font-weight: 800;
 line-height: 1.2;
 color: #fff;
 margin: 18px 0 14px;
 position: relative;
 z-index: 2;
}
.qb-hero h1 .highlight {
 color: var(--qb-primary);
 text-shadow: 0 0 20px rgba(0, 230, 118, 0.4);
}
.qb-hero .lead {
 font-size: 1.1rem;
 color: var(--qb-text-muted);
 max-width: 640px;
 margin-bottom: 24px;
 position: relative;
 z-index: 2;
}
.qb-btn {
 display: inline-flex;
 align-items: center;
 gap: 8px;
 padding: 12px 28px;
 border-radius: 10px;
 font-weight: 700;
 font-size: 0.95rem;
 border: none;
 cursor: pointer;
 transition: var(--qb-transition);
 text-align: center;
 justify-content: center;
}
.qb-btn-primary {
 background: var(--qb-primary);
 color: #000;
 box-shadow: var(--qb-shadow-glow);
}
.qb-btn-primary:hover {
 background: var(--qb-primary-dark);
 color: #000;
 transform: translateY(-2px);
 box-shadow: 0 6px 28px rgba(0, 230, 118, 0.4);
}
.qb-btn-outline {
 background: transparent;
 border: 1px solid var(--qb-border-light);
 color: var(--qb-text);
}
.qb-btn-outline:hover {
 border-color: var(--qb-primary);
 color: var(--qb-primary);
 background: rgba(0, 230, 118, 0.06);
}
.qb-btn-sm {
 padding: 8px 16px;
 font-size: 0.85rem;
}
.qb-card {
 background: var(--qb-bg-card);
 border: 1px solid var(--qb-border);
 border-radius: var(--qb-radius-md);
 padding: 24px;
 transition: var(--qb-transition);
 height: 100%;
 position: relative;
}
.qb-card:hover {
 background: var(--qb-bg-card-hover);
 border-color: var(--qb-border-light);
 transform: translateY(-3px);
 box-shadow: var(--qb-shadow-md);
}
.qb-card-icon {
 width: 48px;
 height: 48px;
 border-radius: 12px;
 display: flex;
 align-items: center;
 justify-content: center;
 font-size: 1.3rem;
 margin-bottom: 16px;
 background: linear-gradient(135deg, rgba(0, 230, 118, 0.18), rgba(0, 176, 255, 0.18));
 color: var(--qb-primary);
}
.qb-card-icon.blue {
 background: linear-gradient(135deg, rgba(0, 176, 255, 0.18), rgba(0, 230, 118, 0.12));
 color: var(--qb-secondary);
}
.qb-card-icon.orange {
 background: linear-gradient(135deg, rgba(255, 109, 0, 0.18), rgba(255, 193, 7, 0.12));
 color: var(--qb-accent);
}
.qb-card h3 {
 font-size: 1.15rem;
 font-weight: 700;
 color: #fff;
 margin-bottom: 8px;
}
.qb-card p {
 font-size: 0.9rem;
 color: var(--qb-text-muted);
 margin-bottom: 0;
}
.qb-section {
 padding: 70px 0;
 position: relative;
}
.qb-section.alt {
 background: var(--qb-bg-deep);
}
.qb-section-head {
 margin-bottom: 40px;
}
.qb-section-head h2 {
 font-size: 2rem;
 font-weight: 800;
 color: #fff;
 margin-bottom: 10px;
}
.qb-section-head p {
 color: var(--qb-text-muted);
 font-size: 1rem;
 max-width: 720px;
}
.qb-stats {
 display: flex;
 gap: 30px;
 flex-wrap: wrap;
}
.qb-stat {
 text-align: center;
}
.qb-stat .num {
 font-size: 2.2rem;
 font-weight: 800;
 color: var(--qb-primary);
 text-shadow: 0 0 20px rgba(0, 230, 118, 0.3);
}
.qb-stat .label {
 font-size: 0.85rem;
 color: var(--qb-text-muted);
}
.qb-list-item {
 display: flex;
 align-items: flex-start;
 gap: 12px;
 padding: 10px 0;
 border-bottom: 1px solid var(--qb-border);
}
.qb-list-item i {
 color: var(--qb-primary);
 font-size: 0.9rem;
 margin-top: 4px;
}
.qb-list-item span {
 font-size: 0.92rem;
 color: var(--qb-text-muted);
}
.qb-faq-item {
 border-bottom: 1px solid var(--qb-border);
}
.qb-faq-item button {
 background: transparent;
 border: none;
 color: #fff;
 font-weight: 600;
 font-size: 1rem;
 padding: 18px 0;
 width: 100%;
 text-align: left;
 display: flex;
 justify-content: space-between;
 align-items: center;
 cursor: pointer;
 transition: var(--qb-transition);
}
.qb-faq-item button:hover {
 color: var(--qb-primary);
}
.qb-faq-item button .fa-chevron-down {
 transition: var(--qb-transition);
 font-size: 0.8rem;
 color: var(--qb-text-dim);
}
.qb-faq-item button[aria-expanded="true"] .fa-chevron-down {
 transform: rotate(180deg);
 color: var(--qb-primary);
}
.qb-faq-item .accordion-body {
 color: var(--qb-text-muted);
 font-size: 0.9rem;
 padding: 0 0 18px;
}
.qb-cta-band {
 background: linear-gradient(135deg, #0d1f17 0%, #0a1a14 40%, #0d1525 100%);
 border: 1px solid var(--qb-border);
 border-radius: var(--qb-radius-lg);
 padding: 48px 40px;
 text-align: center;
 box-shadow: var(--qb-shadow-md);
}
.qb-cta-band h3 {
 font-size: 1.8rem;
 font-weight: 800;
 color: #fff;
 margin-bottom: 12px;
}
.qb-cta-band p {
 color: var(--qb-text-muted);
 max-width: 560px;
 margin: 0 auto 24px;
}
.qb-footer {
 background: var(--qb-bg-deep);
 border-top: 1px solid var(--qb-border);
 padding: 50px 0 24px;
}
.qb-footer-brand {
 font-size: 1.4rem;
 font-weight: 800;
 color: #fff;
 display: flex;
 align-items: center;
 gap: 10px;
 margin-bottom: 14px;
}
.qb-footer-brand .logo-icon {
 width: 36px;
 height: 36px;
 border-radius: 9px;
 background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
 display: flex;
 align-items: center;
 justify-content: center;
 font-size: 1rem;
 color: #000;
 font-weight: 900;
}
.qb-footer p {
 color: var(--qb-text-muted);
 font-size: 0.88rem;
}
.qb-footer-links {
 list-style: none;
 padding: 0;
 margin: 0;
}
.qb-footer-links li a {
 color: var(--qb-text-muted);
 font-size: 0.88rem;
 display: inline-block;
 padding: 4px 0;
}
.qb-footer-links li a:hover {
 color: var(--qb-primary);
}
.qb-footer-bottom {
 border-top: 1px solid var(--qb-border);
 margin-top: 36px;
 padding-top: 20px;
 display: flex;
 flex-wrap: wrap;
 gap: 12px 24px;
 justify-content: space-between;
 align-items: center;
 font-size: 0.78rem;
 color: var(--qb-text-dim);
}
.qb-footer-bottom a {
 color: var(--qb-text-muted);
}
.qb-footer-bottom a:hover {
 color: var(--qb-primary);
}
.qb-bento {
 display: grid;
 grid-template-columns: 1.4fr 1fr;
 gap: 16px;
 margin-top: 30px;
 position: relative;
 z-index: 2;
}
.qb-bento-main {
 background: var(--qb-bg-card);
 border: 1px solid var(--qb-border);
 border-radius: var(--qb-radius-lg);
 padding: 32px;
 min-height: 260px;
 display: flex;
 flex-direction: column;
 justify-content: center;
 position: relative;
 overflow: hidden;
}
.qb-bento-main::after {
 content: '';
 position: absolute;
 top: 0;
 right: 0;
 width: 180px;
 height: 180px;
 background: radial-gradient(circle, rgba(0, 230, 118, 0.12), transparent 70%);
 border-radius: 50%;
 pointer-events: none;
}
.qb-bento-small {
 background: var(--qb-bg-card);
 border: 1px solid var(--qb-border);
 border-radius: var(--qb-radius-lg);
 padding: 24px;
 display: flex;
 flex-direction: column;
 justify-content: center;
 transition: var(--qb-transition);
}
.qb-bento-small:hover {
 background: var(--qb-bg-card-hover);
 border-color: var(--qb-border-light);
}
.qb-bento-cta {
 grid-column: 1 / -1;
 background: linear-gradient(135deg, rgba(0, 230, 118, 0.12), rgba(0, 176, 255, 0.08));
 border: 1px solid rgba(0, 230, 118, 0.3);
 border-radius: var(--qb-radius-lg);
 padding: 20px 28px;
 display: flex;
 align-items: center;
 justify-content: space-between;
 flex-wrap: wrap;
 gap: 14px;
}
.qb-tag {
 display: inline-block;
 padding: 3px 10px;
 border-radius: 14px;
 font-size: 0.72rem;
 font-weight: 600;
 background: rgba(0, 230, 118, 0.12);
 color: var(--qb-primary);
}
.qb-tag.blue {
 background: rgba(0, 176, 255, 0.12);
 color: var(--qb-secondary);
}
.qb-tag.orange {
 background: rgba(255, 109, 0, 0.12);
 color: var(--qb-accent);
}
.qb-testimonial {
 background: var(--qb-bg-card);
 border: 1px solid var(--qb-border);
 border-radius: var(--qb-radius-md);
 padding: 20px 24px;
 height: 100%;
}
.qb-testimonial .quote {
 color: var(--qb-text-muted);
 font-size: 0.9rem;
 margin-bottom: 12px;
}
.qb-testimonial .author {
 font-weight: 700;
 color: #fff;
 font-size: 0.9rem;
}
.qb-testimonial .role {
 font-size: 0.78rem;
 color: var(--qb-text-dim);
}
.qb-profile-avatar {
 width: 40px;
 height: 40px;
 border-radius: 50%;
 background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
 display: flex;
 align-items: center;
 justify-content: center;
 font-weight: 700;
 color: #000;
 font-size: 0.9rem;
}
.qb-avatar-sm {
 width: 32px;
 height: 32px;
 border-radius: 50%;
 background: #1f2937;
 display: flex;
 align-items: center;
 justify-content: center;
 font-size: 0.75rem;
 color: var(--qb-text-muted);
}
.qb-divider {
 border-top: 1px solid var(--qb-border);
 margin: 30px 0;
}
.qb-progress {
 height: 6px;
 background: var(--qb-border);
 border-radius: 3px;
 overflow: hidden;
 margin: 10px 0;
}
.qb-progress .bar {
 height: 100%;
 background: linear-gradient(90deg, var(--qb-primary), var(--qb-secondary));
 border-radius: 3px;
}
.qb-toast-badge {
 position: absolute;
 top: 16px;
 right: 16px;
 background: var(--qb-accent);
 color: #fff;
 font-size: 0.7rem;
 font-weight: 700;
 padding: 3px 10px;
 border-radius: 12px;
}
.qb-flow-step {
 display: flex;
 gap: 16px;
 margin-bottom: 24px;
}
.qb-flow-num {
 width: 40px;
 height: 40px;
 border-radius: 50%;
 background: rgba(0, 230, 118, 0.14);
 border: 1px solid rgba(0, 230, 118, 0.3);
 display: flex;
 align-items: center;
 justify-content: center;
 font-weight: 800;
 color: var(--qb-primary);
 flex-shrink: 0;
 font-size: 1rem;
}
.qb-community-card {
 background: var(--qb-bg-card);
 border: 1px solid var(--qb-border);
 border-radius: var(--qb-radius-md);
 padding: 20px;
 transition: var(--qb-transition);
 height: 100%;
}
.qb-community-card:hover {
 background: var(--qb-bg-card-hover);
 border-color: var(--qb-border-light);
 transform: translateY(-2px);
}
.qb-community-card .title {
 font-weight: 700;
 color: #fff;
 margin-bottom: 6px;
}
.qb-community-card .meta {
 font-size: 0.78rem;
 color: var(--qb-text-dim);
}
@media (max-width: 1024px) {
 .qb-hero h1 { font-size: 2.3rem; }
 .qb-bento { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
 .qb-hamburger { display: block; }
 .qb-nav-links {
 display: none;
 position: absolute;
 top: 100%;
 left: 0;
 right: 0;
 background: var(--qb-bg-deep);
 border-bottom: 1px solid var(--qb-border);
 padding: 14px 20px;
 flex-direction: column;
 align-items: flex-start;
 gap: 4px;
 box-shadow: var(--qb-shadow-md);
 }
 .qb-nav-links.open { display: flex; }
 .qb-nav-links li { width: 100%; }
 .qb-nav-links li a { display: block; width: 100%; padding: 10px 14px; }
 .qb-hero { padding: 40px 0 50px; }
 .qb-hero h1 { font-size: 1.8rem; }
 .qb-section { padding: 50px 0; }
 .qb-cta-band { padding: 32px 20px; }
 .qb-stats { gap: 20px; justify-content: center; }
 .qb-stat .num { font-size: 1.6rem; }
}
@media (max-width: 520px) {
 .qb-hero h1 { font-size: 1.5rem; }
 .qb-hero .lead { font-size: 0.95rem; }
 .qb-btn { padding: 10px 20px; font-size: 0.85rem; width: 100%; }
 .qb-bento-main { padding: 24px; }
 .qb-bento-small { padding: 18px; }
 .qb-section-head h2 { font-size: 1.5rem; }
 .qb-footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}