/* roulang page: index */
:root {
            --color-bg: #0C0E12;
            --color-bg-footer: #080A0C;
            --color-surface: #161A20;
            --color-elevated: #1F242C;
            --color-line: rgba(255,255,255,0.08);
            --color-brand: #FF5D2A;
            --color-brand-hover: #FF7E4D;
            --color-brand-soft: rgba(255,93,42,0.14);
            --color-accent: #FFB84D;
            --color-success: #2FBF71;
            --color-danger: #FF4D4F;
            --text-primary: #F2F5F9;
            --text-secondary: #9BA6B4;
            --text-disabled: #5B6472;
            --radius-card: 16px;
            --radius-btn: 999px;
            --shadow-card: 0 1px 2px rgba(0,0,0,0.3);
            --shadow-hover: 0 12px 24px rgba(255,93,42,0.12);
            --transition: all 0.25s ease-out;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(12, 14, 18, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-line);
            height: 64px;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #FF5D2A, #FFB84D);
            border-radius: 10px;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
            box-shadow: 0 0 14px rgba(255, 93, 42, 0.3);
        }

        .logo-brand {
            font-weight: 900;
            font-size: 20px;
            color: var(--color-brand);
            letter-spacing: 0.5px;
        }

        .logo-text {
            font-weight: 700;
            font-size: 20px;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-link {
            position: relative;
            padding: 0.5rem 1rem;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--color-brand);
            background: var(--color-brand-soft);
        }

        .nav-link.active {
            color: var(--text-primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0;
            height: 2px;
            background: var(--color-brand);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: var(--color-elevated);
            border: 1px solid var(--color-line);
            border-radius: 999px;
            padding: 0 0.75rem;
            height: 38px;
            width: 200px;
            transition: var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--color-brand);
            box-shadow: 0 0 0 3px rgba(255, 93, 42, 0.3);
        }

        .search-form input {
            flex: 1;
            background: transparent;
            border: none;
            font-size: 13px;
            color: var(--text-primary);
            padding: 0 0.5rem;
        }

        .search-form input::placeholder {
            color: var(--text-disabled);
            font-size: 13px;
        }

        .search-form svg {
            width: 16px;
            height: 16px;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .btn-login {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            padding: 0.5rem 1rem;
            border-radius: 999px;
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .btn-login:hover {
            border-color: rgba(255, 255, 255, 0.5);
            color: var(--color-brand);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--color-brand);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 0.625rem 1.25rem;
            border-radius: 999px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            box-shadow: 0 2px 8px rgba(255, 93, 42, 0.25);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--color-brand-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 93, 42, 0.35);
        }

        .btn-primary:active {
            transform: scale(0.97);
            box-shadow: 0 2px 8px rgba(255, 93, 42, 0.2);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 14px;
            padding: 0.625rem 1.25rem;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: var(--color-brand);
            color: var(--color-brand);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn-secondary:active {
            transform: scale(0.97);
        }

        .btn-sm {
            padding: 0.5rem 1rem;
            font-size: 13px;
        }

        .btn-block {
            width: 100%;
            justify-content: center;
            display: flex;
        }

        .btn-primary.btn-block {
            width: 100%;
        }

        .btn-secondary.btn-block {
            width: 100%;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: #0E1116;
            border-bottom: 1px solid var(--color-line);
            z-index: 99;
            padding: 1.25rem 1.5rem 1.5rem;
            flex-direction: column;
            gap: 1rem;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer .nav-link {
            display: block;
            padding: 0.75rem 1rem;
            font-size: 16px;
        }

        .mobile-drawer .mobile-actions {
            display: flex;
            gap: 0.75rem;
            margin-top: 0.5rem;
        }

        .mobile-search {
            display: flex;
            align-items: center;
            background: var(--color-elevated);
            border: 1px solid var(--color-line);
            border-radius: 12px;
            padding: 0 0.75rem;
            height: 44px;
            margin-top: 0.5rem;
        }

        .mobile-search input {
            flex: 1;
            background: transparent;
            border: none;
            font-size: 14px;
            color: var(--text-primary);
            padding: 0 0.5rem;
        }

        .mobile-search input::placeholder {
            color: var(--text-disabled);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 100px 0 80px;
            background-color: #0C0E12;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }

        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(12, 14, 18, 0.92) 0%, rgba(12, 14, 18, 0.75) 50%, rgba(12, 14, 18, 0.4) 100%);
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 93, 42, 0.25), transparent 70%);
            z-index: 0;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 4rem;
            align-items: center;
        }

        .hero-copy {
            max-width: 640px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-brand-soft);
            border: 1px solid rgba(255, 93, 42, 0.3);
            color: var(--color-brand);
            font-size: 13px;
            font-weight: 600;
            padding: 0.375rem 1rem;
            border-radius: 999px;
            margin-bottom: 1.25rem;
        }

        .hero-badge svg {
            width: 16px;
            height: 16px;
        }

        .hero h1 {
            font-size: 2.75rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }

        .hero h1 .highlight {
            color: var(--color-brand);
        }

        .hero-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            line-height: 1.7;
            max-width: 540px;
        }

        .hero-ctas {
            display: flex;
            gap: 1rem;
            margin-bottom: 1.25rem;
            flex-wrap: wrap;
        }

        .hero-trust {
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .hero-trust svg {
            width: 16px;
            height: 16px;
            color: var(--color-accent);
        }

        .hero-card-wrap {
            display: flex;
            justify-content: flex-end;
        }

        .group-card {
            background: rgba(22, 26, 32, 0.9);
            border: 1px solid var(--color-line);
            border-radius: 20px;
            padding: 1.75rem;
            width: 100%;
            max-width: 420px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(8px);
        }

        .group-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1.25rem;
        }

        .group-badge {
            background: linear-gradient(135deg, #FF5D2A, #FFB84D);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
        }

        .group-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .group-progress-wrap {
            margin-bottom: 1.25rem;
        }

        .group-label {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
        }

        .group-label span:last-child {
            color: var(--color-brand);
            font-weight: 600;
        }

        .group-progress {
            height: 6px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            overflow: hidden;
        }

        .group-progress span {
            display: block;
            height: 100%;
            background: linear-gradient(90deg, #FF5D2A, #FFB84D);
            border-radius: 999px;
        }

        .group-actions {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.75rem;
            margin-bottom: 1rem;
        }

        .group-note {
            font-size: 12px;
            color: var(--text-disabled);
            text-align: center;
            line-height: 1.5;
        }

        /* ===== Metrics ===== */
        .metrics-section {
            padding: 4rem 0;
            border-bottom: 1px solid var(--color-line);
            background: linear-gradient(to bottom, #0C0E12, rgba(255, 93, 42, 0.02));
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }

        .metric-card {
            text-align: center;
            padding: 1.5rem 1rem;
            border-radius: var(--radius-card);
            transition: var(--transition);
        }

        .metric-card:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .metric-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--color-brand);
            line-height: 1.2;
            letter-spacing: -0.02em;
            text-shadow: 0 0 24px rgba(255, 93, 42, 0.3);
            font-variant-numeric: tabular-nums;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 0.25rem;
            font-weight: 400;
        }

        /* ===== Section common ===== */
        .section {
            padding: 5rem 0;
        }

        .section-head {
            margin-bottom: 3rem;
            max-width: 720px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--color-brand);
            text-transform: uppercase;
            margin-bottom: 0.75rem;
        }

        .section-tag .line {
            width: 24px;
            height: 2px;
            background: var(--color-brand);
            border-radius: 2px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 0.75rem;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Services ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .service-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            border-color: rgba(255, 255, 255, 0.16);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .service-card:hover .service-icon {
            transform: scale(1.05);
        }

        .service-card.lg {
            grid-column: span 2;
        }

        .service-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--color-brand-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 1rem;
            transition: var(--transition);
        }

        .service-icon svg {
            width: 22px;
            height: 22px;
            color: var(--color-brand);
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .service-card .service-link {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-brand);
            margin-top: 0.75rem;
            transition: var(--transition);
        }

        .service-card .service-link:hover {
            gap: 0.5rem;
        }

        .service-card .service-link svg {
            width: 14px;
            height: 14px;
        }

        .service-tags {
            display: flex;
            gap: 0.5rem;
            margin-top: 0.75rem;
            flex-wrap: wrap;
        }

        .mini-tag {
            font-size: 11px;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-line);
            padding: 0.25rem 0.65rem;
            border-radius: 999px;
        }

        .service-cover {
            position: absolute;
            top: 0;
            right: 0;
            width: 60%;
            height: 100%;
            object-fit: cover;
            opacity: 0.08;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            pointer-events: none;
        }

        /* ===== Specs ===== */
        .spec-section {
            background: linear-gradient(to bottom, #0C0E12, rgba(255, 93, 42, 0.03), #0C0E12);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
        }

        .spec-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.25rem;
        }

        .spec-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
        }

        .spec-item:hover {
            border-color: var(--color-brand);
            box-shadow: 0 8px 20px rgba(255, 93, 42, 0.08);
        }

        .spec-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--color-brand-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .spec-icon svg {
            width: 18px;
            height: 18px;
            color: var(--color-brand);
        }

        .spec-item h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 0.25rem;
        }

        .spec-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.55;
        }

        /* ===== Compare ===== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .compare-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 20px;
            padding: 2rem;
            transition: var(--transition);
        }

        .compare-card.before {
            background: rgba(22, 26, 32, 0.5);
            filter: saturate(0.6);
        }

        .compare-card.after {
            border-color: rgba(255, 93, 42, 0.3);
            box-shadow: 0 16px 32px rgba(255, 93, 42, 0.08);
            position: relative;
        }

        .compare-card.after::before {
            content: '更推荐';
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: linear-gradient(135deg, #FF5D2A, #FFB84D);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 0.3rem 0.8rem;
            border-radius: 999px;
        }

        .compare-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--text-primary);
        }

        .compare-item {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 0.6rem 0;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .compare-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .compare-icon.success {
            background: rgba(47, 191, 113, 0.12);
            color: var(--color-success);
        }

        .compare-icon.danger {
            background: rgba(255, 77, 79, 0.12);
            color: var(--color-danger);
        }

        .compare-icon svg {
            width: 12px;
            height: 12px;
        }

        .compare-footer {
            margin-top: 1.5rem;
            font-size: 14px;
            color: var(--text-secondary);
            border-top: 1px solid var(--color-line);
            padding-top: 1rem;
            line-height: 1.6;
        }

        .compare-footer strong {
            color: var(--color-brand);
            font-weight: 700;
        }

        /* ===== News ===== */
        .news-section {
            border-top: 1px solid var(--color-line);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 2rem;
        }

        .news-list {
            display: flex;
            flex-direction: column;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 0;
            border-bottom: 1px solid var(--color-line);
            transition: var(--transition);
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            padding-left: 0.25rem;
        }

        .news-item a {
            flex: 1;
            font-size: 15px;
            color: var(--text-primary);
            font-weight: 500;
            line-height: 1.5;
        }

        .news-item a:hover {
            color: var(--color-brand);
        }

        .news-date {
            font-size: 13px;
            color: var(--text-disabled);
            flex-shrink: 0;
        }

        .news-side .side-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            margin-bottom: 1.25rem;
        }

        .side-card h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .side-card h4 svg {
            width: 18px;
            height: 18px;
            color: var(--color-brand);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .tag-cloud a {
            font-size: 12px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-line);
            padding: 0.3rem 0.85rem;
            border-radius: 999px;
            transition: var(--transition);
        }

        .tag-cloud a:hover {
            color: var(--color-brand);
            border-color: var(--color-brand);
            background: var(--color-brand-soft);
        }

        .side-report {
            display: flex;
            gap: 1rem;
            align-items: center;
        }

        .side-report img {
            width: 80px;
            height: 80px;
            object-fit: cover;
            border-radius: 12px;
        }

        .side-report .report-info {
            flex: 1;
        }

        .side-report .report-info span {
            font-size: 12px;
            color: var(--color-brand);
            font-weight: 600;
            display: block;
            margin-bottom: 0.25rem;
        }

        .side-report .report-info p {
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 500;
            line-height: 1.45;
            margin-bottom: 0.5rem;
        }

        .side-report .report-info a {
            font-size: 13px;
            color: var(--color-brand);
            font-weight: 600;
        }

        .side-report .report-info a:hover {
            text-decoration: underline;
        }

        .side-update {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .side-update strong {
            color: var(--text-primary);
            font-weight: 600;
            display: block;
            margin-bottom: 0.25rem;
        }

        .side-update a {
            color: var(--color-brand);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-section {
            border-top: 1px solid var(--color-line);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.14);
        }

        .faq-item.open {
            border-color: rgba(255, 93, 42, 0.3);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1rem 1.5rem;
            cursor: pointer;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--color-brand);
        }

        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-icon svg {
            width: 12px;
            height: 12px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .faq-item.open .faq-icon {
            background: var(--color-brand);
            transform: rotate(45deg);
        }

        .faq-item.open .faq-icon svg {
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out;
        }

        .faq-answer-content {
            padding: 0 1.5rem 1.25rem;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .faq-more {
            text-align: center;
            margin-top: 1.5rem;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .faq-more a {
            color: var(--color-brand);
            font-weight: 600;
        }

        .faq-more a:hover {
            text-decoration: underline;
        }

        /* ===== CTA Form ===== */
        .cta-section {
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
            background: linear-gradient(135deg, rgba(255, 93, 42, 0.06), rgba(255, 184, 77, 0.03));
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .cta-left h2 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }

        .cta-left h2 .highlight {
            color: var(--color-brand);
        }

        .cta-left p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .cta-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .cta-list-item {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 14px;
            color: var(--text-primary);
        }

        .cta-list-icon {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: rgba(47, 191, 113, 0.12);
            color: var(--color-success);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .cta-list-icon svg {
            width: 10px;
            height: 10px;
        }

        .cta-form-wrap {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }

        .cta-form-wrap h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 1.5rem;
        }

        .form-group {
            margin-bottom: 1rem;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 0.375rem;
        }

        .form-control {
            width: 100%;
            background: var(--color-elevated);
            border: 1px solid var(--color-line);
            border-radius: 12px;
            padding: 0.75rem 1rem;
            font-size: 14px;
            color: var(--text-primary);
            transition: var(--transition);
        }

        .form-control::placeholder {
            color: var(--text-disabled);
        }

        .form-control:focus {
            border-color: var(--color-brand);
            box-shadow: 0 0 0 3px rgba(255, 93, 42, 0.2);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239BA6B4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
            padding-right: 2.5rem;
        }

        select.form-control option {
            background: var(--color-elevated);
            color: var(--text-primary);
        }

        textarea.form-control {
            min-height: 90px;
            resize: vertical;
        }

        .form-button {
            width: 100%;
            margin-top: 0.5rem;
        }

        .form-privacy {
            font-size: 12px;
            color: var(--text-disabled);
            text-align: center;
            margin-top: 0.75rem;
            line-height: 1.5;
        }

        .form-success {
            display: none;
            text-align: center;
            padding: 2rem 0;
        }

        .form-success.show {
            display: block;
        }

        .form-success-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(47, 191, 113, 0.12);
            color: var(--color-success);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
        }

        .form-success-icon svg {
            width: 24px;
            height: 24px;
        }

        .form-success h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .form-success p {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-footer);
            border-top: 1px solid var(--color-line);
            padding: 4rem 0 1.5rem;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }

        .footer-brand .logo {
            margin-bottom: 1rem;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--color-brand);
        }

        .footer-bottom {
            border-top: 1px solid var(--color-line);
            padding-top: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-disabled);
        }

        .footer-bottom a {
            color: var(--text-secondary);
        }

        .footer-bottom a:hover {
            color: var(--color-brand);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }

            .search-form {
                display: none;
            }

            .btn-login {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .hero-inner {
                grid-template-columns: 1fr;
                gap: 2rem;
                padding-top: 1rem;
            }

            .hero-card-wrap {
                justify-content: flex-start;
            }

            .group-card {
                max-width: 100%;
            }

            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .service-card.lg {
                grid-column: span 2;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }

            .compare-grid {
                grid-template-columns: 1fr;
            }

            .news-layout {
                grid-template-columns: 1fr;
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .spec-grid {
                grid-template-columns: 1fr;
            }

            .hero h1 {
                font-size: 2.25rem;
            }
        }

        @media (max-width: 640px) {
            .section {
                padding: 3rem 0;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .hero {
                padding: 80px 0 60px;
            }

            .hero h1 {
                font-size: 1.75rem;
            }

            .hero-sub {
                font-size: 15px;
            }

            .hero-ctas {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-ctas .btn-primary,
            .hero-ctas .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .group-card {
                padding: 1.25rem;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .service-card.lg {
                grid-column: span 1;
            }

            .compare-card {
                padding: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }

            .metric-number {
                font-size: 2rem;
            }

            .spec-item {
                flex-direction: column;
            }

            .cta-form-wrap {
                padding: 1.5rem;
            }

            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.25rem;
            }

            .news-date {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --color-bg: #0C0E12;
            --color-bg-footer: #080A0C;
            --color-surface: #161A20;
            --color-elevated: #1F242C;
            --color-line: rgba(255, 255, 255, 0.08);
            --color-brand: #FF5D2A;
            --color-brand-hover: #FF7E4D;
            --color-brand-soft: rgba(255, 93, 42, 0.14);
            --color-accent: #FFB84D;
            --color-success: #2FBF71;
            --color-danger: #FF4D4F;
            --text-primary: #F2F5F9;
            --text-secondary: #9BA6B4;
            --text-disabled: #5B6472;
            --radius-card: 16px;
            --radius-btn: 999px;
            --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 24px rgba(255, 93, 42, 0.12);
            --transition: all 0.25s ease-out;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            display: block;
            max-width: 100%;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(12, 14, 18, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-line);
            height: 64px;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #FF5D2A, #FFB84D);
            border-radius: 10px;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
            box-shadow: 0 0 14px rgba(255, 93, 42, 0.3);
        }
        .logo-brand {
            font-weight: 900;
            font-size: 20px;
            color: var(--color-brand);
            letter-spacing: 0.5px;
        }
        .logo-text {
            font-weight: 700;
            font-size: 20px;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-link {
            position: relative;
            padding: 0.5rem 1rem;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--color-brand);
            background: var(--color-brand-soft);
        }
        .nav-link.active {
            color: var(--text-primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0;
            height: 2px;
            background: var(--color-brand);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: var(--color-elevated);
            border: 1px solid var(--color-line);
            border-radius: 999px;
            padding: 0 0.75rem;
            height: 38px;
            width: 200px;
            transition: var(--transition);
        }
        .search-form:focus-within {
            border-color: var(--color-brand);
            box-shadow: 0 0 0 3px rgba(255, 93, 42, 0.3);
        }
        .search-form input {
            flex: 1;
            background: transparent;
            border: none;
            font-size: 13px;
            color: var(--text-primary);
            padding: 0 0.5rem;
        }
        .search-form input::placeholder {
            color: var(--text-disabled);
        }
        .search-form svg {
            width: 16px;
            height: 16px;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .btn-login {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            padding: 0.5rem 1rem;
            border-radius: 999px;
            border: 1px solid transparent;
        }
        .btn-login:hover {
            border-color: rgba(255, 255, 255, 0.5);
            color: var(--color-brand);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--color-brand);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 0.625rem 1.25rem;
            border-radius: 999px;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background: var(--color-brand-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 14px;
            padding: 0.625rem 1.25rem;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-secondary:hover {
            border-color: var(--color-brand);
            color: var(--color-brand);
        }
        /* ===== Mobile Navigation ===== */
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--color-line);
            background: var(--color-elevated);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--text-primary);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(12, 14, 18, 0.98);
            backdrop-filter: blur(12px);
            z-index: 99;
            border-bottom: 1px solid var(--color-line);
            padding: 1rem 1.5rem 1.5rem;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .main-nav {
            flex-direction: column;
            align-items: flex-start;
            gap: 0.25rem;
            margin-bottom: 1rem;
        }
        .mobile-menu .nav-link {
            width: 100%;
            padding: 0.75rem 0;
            border-radius: 0;
        }
        .mobile-menu .search-form {
            width: 100%;
            margin-bottom: 0.75rem;
        }
        .mobile-menu .btn-login {
            padding: 0.625rem 1rem;
        }
        @media (max-width: 1023px) {
            .main-nav,
            .header-actions .search-form {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
        }
        /* ===== Page Hero ===== */
        .category-hero {
            position: relative;
            padding: 120px 0 64px;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(12, 14, 18, 0.95) 0%, rgba(12, 14, 18, 0.75) 55%, rgba(12, 14, 18, 0.5) 100%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.25rem;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            background: rgba(255, 93, 42, 0.15);
            border: 1px solid rgba(255, 93, 42, 0.35);
            color: var(--color-accent);
            border-radius: 999px;
            padding: 0.25rem 0.85rem;
            font-size: 13px;
            font-weight: 500;
        }
        .category-hero h1 {
            font-size: 2.5rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.15;
            color: var(--text-primary);
            margin-bottom: 1rem;
            max-width: 720px;
        }
        .category-hero h1 .text-brand {
            color: var(--color-brand);
        }
        .category-hero .hero-sub {
            font-size: 16px;
            color: rgba(242, 245, 249, 0.7);
            max-width: 580px;
            margin-bottom: 1.5rem;
        }
        .hero-hot-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-top: 1.5rem;
        }
        .hero-hot-item {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(31, 36, 44, 0.7);
            border: 1px solid var(--color-line);
            border-radius: 12px;
            padding: 0.5rem 1rem;
            font-size: 13px;
            color: var(--text-secondary);
            cursor: pointer;
            transition: var(--transition);
        }
        .hero-hot-item:hover {
            border-color: rgba(255, 93, 42, 0.4);
            color: var(--text-primary);
        }
        .hero-hot-item .hot-num {
            font-weight: 800;
            color: var(--color-brand);
            font-size: 14px;
        }
        @media (max-width: 639px) {
            .category-hero {
                padding-top: 100px;
                padding-bottom: 40px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .hero-sub {
                font-size: 14px;
            }
            .hero-hot-list {
                flex-direction: column;
                gap: 0.5rem;
            }
        }
        /* ===== Filter Bar ===== */
        .filter-bar {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-line);
            padding: 1rem 0;
        }
        .filter-scroll {
            display: flex;
            gap: 0.5rem;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding-bottom: 2px;
        }
        .filter-scroll::-webkit-scrollbar {
            display: none;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            white-space: nowrap;
            padding: 0.375rem 1rem;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-secondary);
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-chip:hover {
            border-color: var(--color-brand);
            color: var(--text-primary);
        }
        .filter-chip.active {
            background: var(--color-brand);
            border-color: var(--color-brand);
            color: #fff;
            font-weight: 600;
        }
        /* ===== Card Grid ===== */
        .video-grid-section {
            padding: 3rem 0 4rem;
        }
        .section-heading {
            margin-bottom: 2rem;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--color-brand);
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 0.5rem;
        }
        .section-title {
            font-size: 1.875rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 640px;
        }
        .video-card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 640px) {
            .video-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .video-card-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .video-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .video-card:hover {
            border-color: rgba(255, 93, 42, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .video-card-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .video-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease-out;
        }
        .video-card:hover .video-card-cover img {
            transform: scale(1.05);
        }
        .video-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(12, 14, 18, 0.85);
            backdrop-filter: blur(6px);
            color: var(--color-accent);
            border: 1px solid rgba(255, 184, 77, 0.3);
            font-size: 12px;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 999px;
        }
        .video-card-tag.hot {
            background: linear-gradient(135deg, #FF5D2A, #FFB84D);
            color: #fff;
            border: none;
        }
        .video-card-body {
            padding: 1.25rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .video-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            line-height: 1.35;
        }
        .video-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 1rem;
            flex: 1;
        }
        .video-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.75rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .video-card-stats {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 12px;
            color: var(--text-disabled);
        }
        .video-card-stats span {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }
        .video-card-enter {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-brand);
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }
        .video-card-enter:hover {
            color: var(--color-brand-hover);
        }
        /* ===== Pagination ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: 3rem;
        }
        .pagination {
            display: flex;
            align-items: center;
            gap: 0.375rem;
        }
        .page-btn {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            border: 1px solid var(--color-line);
            background: var(--color-surface);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
        }
        .page-btn:hover {
            border-color: var(--color-brand);
            color: var(--color-brand);
        }
        .page-btn.active {
            background: var(--color-brand);
            border-color: var(--color-brand);
            color: #fff;
            font-weight: 700;
        }
        .page-btn.active:hover {
            background: var(--color-brand-hover);
            box-shadow: 0 0 16px rgba(255, 93, 42, 0.35);
        }
        .page-arrow {
            font-size: 18px;
            line-height: 1;
        }
        /* ===== Features Strip ===== */
        .features-strip {
            background: var(--color-surface);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
            padding: 2.5rem 0;
        }
        .features-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 640px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 0.875rem;
        }
        .feature-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-brand-soft);
            border: 1px solid rgba(255, 93, 42, 0.2);
            color: var(--color-brand);
            border-radius: 12px;
            font-size: 20px;
        }
        .feature-text h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.25rem;
        }
        .feature-text p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        /* ===== FAQ ===== */
        .faq-section {
            padding: 4rem 0;
        }
        .faq-grid {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 14px;
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 93, 42, 0.25);
        }
        .faq-item.open {
            border-color: rgba(255, 93, 42, 0.35);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            border: 1px solid var(--color-line);
            background: var(--color-elevated);
            color: var(--color-brand);
            font-size: 16px;
            font-weight: 600;
            transition: transform 0.25s ease-out;
        }
        .faq-item.open .faq-icon {
            transform: rotate(135deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            transition: max-height 0.35s ease-out;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 0.75rem;
        }
        @media (max-width: 639px) {
            .faq-question {
                font-size: 14px;
            }
            .faq-item {
                padding: 1rem 1.1rem;
            }
        }
        /* ===== CTA / Contact ===== */
        .cta-section {
            padding: 4rem 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-line);
        }
        .cta-container {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            background: linear-gradient(135deg, rgba(255, 93, 42, 0.08), rgba(255, 184, 77, 0.05));
            border: 1px solid rgba(255, 93, 42, 0.2);
            border-radius: 24px;
            padding: 2rem;
        }
        @media (min-width: 1024px) {
            .cta-container {
                grid-template-columns: 1fr 1fr;
                padding: 3rem;
            }
        }
        .cta-left .cta-title {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }
        .cta-left .cta-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.25rem;
        }
        .cta-usps {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .cta-usp {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 14px;
            color: var(--text-primary);
        }
        .cta-usp svg {
            width: 18px;
            height: 18px;
            color: var(--color-brand);
            flex-shrink: 0;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 0.875rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
        }
        .form-group label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .form-control {
            background: var(--color-elevated);
            border: 1px solid var(--color-line);
            border-radius: 12px;
            padding: 0.625rem 1rem;
            font-size: 14px;
            color: var(--text-primary);
            transition: var(--transition);
            width: 100%;
        }
        .form-control:focus {
            border-color: var(--color-brand);
            box-shadow: 0 0 0 3px rgba(255, 93, 42, 0.2);
        }
        .form-control::placeholder {
            color: var(--text-disabled);
        }
        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239BA6B4' viewBox='0 0 16 16'%3E%3Cpath d='M8 12L2 6h12z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
            padding-right: 2.5rem;
        }
        .form-success {
            display: none;
            color: var(--color-success);
            font-size: 14px;
            font-weight: 500;
            padding: 0.5rem 0;
        }
        .form-success.show {
            display: block;
        }
        .privacy-note {
            font-size: 12px;
            color: var(--text-disabled);
            margin-top: 0.5rem;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-footer);
            border-top: 1px solid var(--color-line);
            padding: 3.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            padding-bottom: 2.5rem;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
            }
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 0.5rem;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-col a {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .footer-col a:hover {
            color: var(--color-brand);
        }
        .footer-col li {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-line);
            padding: 1.25rem 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
            font-size: 13px;
            color: var(--text-disabled);
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }
        /* ===== Utility ===== */
        .text-glow {
            text-shadow: 0 0 24px rgba(255, 93, 42, 0.4);
        }
        .section-padding {
            padding: 4rem 0;
        }
        @media (max-width: 639px) {
            .section-padding {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }