/* roulang page: index */
:root {
            --primary: #1D63ED;
            --primary-dark: #174EA6;
            --primary-light: #EAF1FE;
            --gunmetal: #1F2937;
            --titanium: #5A6572;
            --signal-orange: #FF6B35;
            --bg: #F5F7FA;
            --card: #FFFFFF;
            --text: #0F172A;
            --muted: #64748B;
            --border: #E2E8F0;
            --cyan: #22D3EE;
            --radius-card: 10px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-default: 0 4px 14px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 10px 24px rgba(15, 23, 42, 0.12);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-data: "Inter", "Roboto", "DIN Condensed", sans-serif;
            --transition: 0.25s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            color: var(--text);
            background: var(--bg);
            line-height: 1.6;
            font-size: 15px;
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: 60px 0;
            border-bottom: 1px solid var(--border);
        }
        .section-alt {
            background: var(--card);
        }
        .section-title {
            font-size: 24px;
            font-weight: 750;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }
        .section-sub {
            font-size: 15px;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: var(--primary-light);
            color: var(--primary);
            border: 1px solid rgba(29, 99, 237, 0.15);
        }
        .tag-orange {
            background: #FFF1EB;
            color: var(--signal-orange);
            border-color: rgba(255, 107, 53, 0.2);
        }
        .tag-gray {
            background: #F1F5F9;
            color: var(--titanium);
            border-color: var(--border);
        }
        .card {
            background: var(--card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-default);
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 650;
            font-size: 14px;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 18px rgba(29, 99, 237, 0.25);
        }
        .btn-orange {
            background: var(--signal-orange);
            color: #fff;
        }
        .btn-orange:hover {
            background: #e55a2b;
            color: #fff;
            box-shadow: 0 6px 18px rgba(255, 107, 53, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .tactical-grid {
            position: relative;
            background-image:
                linear-gradient(rgba(29, 99, 237, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(29, 99, 237, 0.05) 1px, transparent 1px);
            background-size: 40px 40px;
        }
        .crosshair-icon {
            width: 28px;
            height: 28px;
            border: 2px solid var(--primary);
            border-radius: 50%;
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .crosshair-icon::before {
            content: '';
            position: absolute;
            width: 16px;
            height: 2px;
            background: var(--signal-orange);
            border-radius: 1px;
        }
        .crosshair-icon::after {
            content: '';
            position: absolute;
            width: 2px;
            height: 16px;
            background: var(--primary);
            border-radius: 1px;
        }
        .data-number {
            font-family: var(--font-data);
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            color: var(--text);
        }
        .steel-label {
            font-family: var(--font-data);
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--titanium);
            border: 1px solid var(--border);
            padding: 4px 10px;
            border-radius: 4px;
            background: #FAFBFC;
            display: inline-block;
        }
        .scale-mark {
            width: 6px;
            height: 6px;
            background: var(--cyan);
            border-radius: 50%;
            display: inline-block;
            margin-right: 6px;
            flex-shrink: 0;
        }
        .reveal-line {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .reveal-line::after {
            content: '';
            flex: 1;
            height: 1px;
            background: linear-gradient(90deg, var(--border), transparent);
        }
        /* Header / Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .header-brand-row .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .header-brand-row .logo-text span {
            color: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-actions .search-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition);
            background: var(--card);
            color: var(--titanium);
        }
        .header-actions .search-icon:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .header-channel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 0 10px;
            transition: all 0.3s ease;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }
        .header-nav a {
            font-size: 14px;
            font-weight: 550;
            color: var(--titanium);
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition);
        }
        .header-nav a:hover, .header-nav a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .header-nav a.active {
            font-weight: 700;
            color: var(--primary);
        }
        .header-cta-link {
            font-size: 13px;
            font-weight: 650;
            color: var(--primary);
            background: var(--primary-light);
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(29, 99, 237, 0.2);
            transition: all var(--transition);
        }
        .header-cta-link:hover {
            background: var(--primary);
            color: #fff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 110;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        .mobile-drawer {
            display: none;
            background: var(--card);
            border-top: 1px solid var(--border);
            padding: 20px;
        }
        .mobile-drawer.open {
            display: block;
        }
        .mobile-drawer .mobile-nav {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .mobile-drawer .mobile-nav a {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }
        /* Header scrolled */
        .site-header.scrolled .header-brand-row {
            padding: 0;
            max-height: 0;
            opacity: 0;
            pointer-events: none;
        }
        .site-header.scrolled .header-channel-row {
            padding: 0;
        }
        .site-header.scrolled {
            padding: 10px 0;
        }
        .site-header.scrolled .header-nav a {
            font-size: 13px;
        }
        .site-header.scrolled .header-cta-link {
            padding: 6px 14px;
            font-size: 12px;
        }
        .site-header.scrolled .logo-text-mobile {
            display: inline;
            font-size: 15px;
            font-weight: 800;
            color: var(--text);
            white-space: nowrap;
        }
        .logo-text-mobile {
            display: none;
        }
        .site-header.scrolled .logo-text-mobile {
            display: inline;
        }
        .site-header.scrolled .logo-text-desktop {
            display: none;
        }
        /* Mobile */
        @media (max-width: 768px) {
            .header-channel-row {
                display: none;
            }
            .header-brand-row .logo-text {
                font-size: 16px;
            }
            .header-actions .header-cta-link {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .site-header.scrolled .header-brand-row {
                padding: 12px 0;
                max-height: none;
                opacity: 1;
                pointer-events: auto;
            }
            .site-header.scrolled .header-channel-row {
                display: none;
            }
            .site-header.scrolled {
                padding: 0;
            }
            .site-header.scrolled .logo-text-mobile {
                display: none;
            }
            .site-header.scrolled .logo-text-desktop {
                display: inline;
            }
            .mobile-drawer {
                display: none;
            }
            .mobile-drawer.open {
                display: block;
            }
        }
        /* Hero */
        .hero-section {
            padding-top: 140px;
            padding-bottom: 60px;
            background: var(--bg);
            position: relative;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }
        .hero-data-card {
            background: var(--card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-default);
            padding: 22px 20px;
            position: relative;
            transition: all var(--transition);
        }
        .hero-data-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .invite-progress-bar {
            height: 10px;
            background: #E8EDF5;
            border-radius: 999px;
            overflow: hidden;
            position: relative;
        }
        .invite-progress-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            border-radius: 999px;
            transition: width 0.5s ease;
        }
        /* Service cards */
        .service-card {
            padding: 24px 20px;
            position: relative;
        }
        .service-card .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 8px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            color: var(--primary);
            font-size: 20px;
            border: 1px solid rgba(29, 99, 237, 0.12);
        }
        /* Category cards */
        .category-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition);
            background: var(--card);
        }
        .category-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .category-card img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            display: block;
        }
        .category-card .cat-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 30px 16px 14px;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.15), transparent);
            color: #fff;
        }
        .category-card .cat-overlay h3 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
        }
        .category-card .cat-overlay p {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 4px;
        }
        /* Comparison */
        .compare-card {
            border-radius: var(--radius-card);
            padding: 24px;
            border: 1.5px solid var(--border);
            background: var(--card);
            transition: all var(--transition);
        }
        .compare-card.highlight {
            border-color: var(--primary);
            box-shadow: 0 6px 20px rgba(29, 99, 237, 0.1);
        }
        /* Timeline */
        .timeline-item {
            position: relative;
            padding-left: 28px;
            padding-bottom: 28px;
            border-left: 2px solid rgba(29, 99, 237, 0.2);
        }
        .timeline-item:last-child {
            border-left-color: transparent;
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -6px;
            top: 5px;
            width: 10px;
            height: 10px;
            background: var(--primary);
            border-radius: 50%;
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--primary);
        }
        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            background: var(--card);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow-default);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 15px;
            font-weight: 650;
            color: var(--text);
            text-align: left;
            gap: 12px;
        }
        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border: 1.5px solid var(--titanium);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--titanium);
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            border-color: var(--primary);
            color: var(--primary);
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 20px 18px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        /* Form */
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: #F8FAFC;
            font-size: 14px;
            color: var(--text);
            transition: all var(--transition);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(29, 99, 237, 0.08);
        }
        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        /* Testimonial */
        .testimonial-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            min-width: 300px;
            flex-shrink: 0;
            box-shadow: var(--shadow-default);
        }
        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), #E0E7FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            border: 2px solid rgba(29, 99, 237, 0.15);
        }
        /* Scrollbar for horizontal */
        .h-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
        }
        .h-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .h-scroll::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 999px;
        }
        .h-scroll > * {
            scroll-snap-align: start;
        }
        /* Footer */
        .site-footer {
            background: var(--gunmetal);
            color: #CBD5E1;
            padding: 50px 0 20px;
            margin-top: 0;
        }
        .site-footer .footer-logo {
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .site-footer .footer-logo span {
            color: var(--signal-orange);
        }
        .site-footer a {
            color: #94A3B8;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-heading {
            font-size: 14px;
            font-weight: 700;
            color: #E2E8F0;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 32px;
            padding-top: 16px;
            text-align: center;
            font-size: 12px;
            color: #64748B;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 44px 0;
            }
            .hero-section {
                padding-top: 120px;
                padding-bottom: 44px;
            }
            .data-number {
                font-size: 30px;
            }
            .section-title {
                font-size: 21px;
            }
        }
        @media (max-width: 768px) {
            .hero-section {
                padding-top: 90px;
                padding-bottom: 36px;
            }
            .container {
                padding: 0 14px;
            }
            .section {
                padding: 36px 0;
            }
            .section-title {
                font-size: 19px;
            }
            .data-number {
                font-size: 26px;
            }
            .header-nav {
                gap: 16px;
            }
            .header-actions .search-icon {
                width: 34px;
                height: 34px;
            }
            .hero-data-card {
                padding: 18px 16px;
            }
            .category-card img {
                height: 150px;
            }
            .compare-card {
                padding: 18px 16px;
            }
            .testimonial-card {
                min-width: 260px;
                padding: 18px 16px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .hero-section {
                padding-top: 78px;
                padding-bottom: 30px;
            }
            .section {
                padding: 30px 0;
            }
            .data-number {
                font-size: 22px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 13px;
                width: 100%;
                justify-content: center;
            }
            .category-card img {
                height: 130px;
            }
            .testimonial-card {
                min-width: 240px;
            }
            .header-brand-row {
                padding: 10px 0;
            }
            .header-brand-row .logo-text {
                font-size: 14px;
            }
            .hamburger span {
                width: 20px;
                height: 2px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1D63ED;
            --primary-dark: #174EA6;
            --primary-light: #EAF1FE;
            --gunmetal: #1F2937;
            --titanium: #5A6572;
            --signal-orange: #FF6B35;
            --bg: #F5F7FA;
            --card: #FFFFFF;
            --text: #0F172A;
            --muted: #64748B;
            --border: #E2E8F0;
            --cyan: #22D3EE;
            --radius-card: 10px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-default: 0 4px 14px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 10px 24px rgba(15, 23, 42, 0.12);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-data: "Inter", "Roboto", "DIN Condensed", sans-serif;
            --transition: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-cn);
            color: var(--text);
            background: var(--bg);
            line-height: 1.6;
            font-size: 15px;
            min-height: 100vh;
            padding-top: 108px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: 56px 0;
            border-bottom: 1px solid var(--border);
        }
        .section-alt {
            background: var(--card);
        }
        .section-title {
            font-size: 24px;
            font-weight: 750;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .section-sub {
            font-size: 15px;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 26px;
        }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: var(--primary-light);
            color: var(--primary);
            border: 1px solid rgba(29, 99, 237, 0.15);
        }
        .tag-orange {
            background: #FFF1EB;
            color: var(--signal-orange);
            border-color: rgba(255, 107, 53, 0.2);
        }
        .tag-gray {
            background: #F1F5F9;
            color: var(--titanium);
            border-color: var(--border);
        }
        .card {
            background: var(--card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-default);
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 26px;
            border-radius: var(--radius-btn);
            font-weight: 650;
            font-size: 14px;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 18px rgba(29, 99, 237, 0.25);
        }
        .btn-orange {
            background: var(--signal-orange);
            color: #fff;
        }
        .btn-orange:hover {
            background: #e55a2b;
            color: #fff;
            box-shadow: 0 6px 18px rgba(255, 107, 53, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .tactical-grid {
            position: relative;
            background-image:
                linear-gradient(rgba(29, 99, 237, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(29, 99, 237, 0.05) 1px, transparent 1px);
            background-size: 40px 40px;
        }
        .data-number {
            font-family: var(--font-data);
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            color: var(--text);
        }
        .crosshair-icon {
            display: inline-block;
            position: relative;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 3px rgba(29, 99, 237, 0.18);
        }
        .crosshair-icon::before,
        .crosshair-icon::after {
            content: "";
            position: absolute;
            background: #fff;
        }
        .crosshair-icon::before {
            width: 2px;
            height: 18px;
            top: 7px;
            left: 15px;
        }
        .crosshair-icon::after {
            width: 18px;
            height: 2px;
            top: 15px;
            left: 7px;
        }
        /* Header / Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .header-brand-row .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .header-brand-row .logo-text span {
            color: var(--primary);
        }
        .logo-text-mobile {
            display: none;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-actions .search-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--muted);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition);
        }
        .header-actions .search-icon:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .header-cta-link {
            font-size: 13px;
            font-weight: 650;
            color: var(--signal-orange);
            border: 1.5px solid var(--signal-orange);
            padding: 7px 18px;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .header-cta-link:hover {
            background: var(--signal-orange);
            color: #fff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 4px;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: #fff;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }
        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .hamburger:hover {
            border-color: var(--primary);
        }
        .header-channel-row {
            border-top: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 26px;
            padding: 10px 0;
            overflow-x: auto;
            white-space: nowrap;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .header-nav a {
            font-size: 14px;
            font-weight: 550;
            color: var(--titanium);
            padding: 5px 2px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .header-nav a:hover {
            color: var(--primary);
        }
        .header-nav a.active {
            color: var(--primary);
            font-weight: 700;
            border-bottom-color: var(--primary);
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.99);
            z-index: 99;
            padding: 24px 20px 40px;
            overflow-y: auto;
            transition: transform 0.3s ease;
            transform: translateX(100%);
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .mobile-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-nav a {
            padding: 14px 12px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            border-bottom: 1px solid var(--border);
            border-radius: 6px;
            transition: all var(--transition);
        }
        .mobile-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        /* Category page specific */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--border);
            font-size: 11px;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }
        .filter-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: var(--radius-tag);
            font-size: 13px;
            font-weight: 600;
            background: #fff;
            color: var(--titanium);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-pill:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-pill.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(29, 99, 237, 0.2);
        }
        .video-card .cover-wrap {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            aspect-ratio: 16/9;
            background: #E8EDF4;
        }
        .video-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .video-card:hover .cover-wrap img {
            transform: scale(1.03);
        }
        .video-card .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0) 60%, rgba(15, 23, 42, 0.55) 100%);
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            padding: 12px 14px;
            gap: 8px;
        }
        .video-card .duration-badge {
            font-family: var(--font-data);
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: rgba(15, 23, 42, 0.7);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.04em;
        }
        .video-card .quality-badge {
            font-size: 11px;
            font-weight: 700;
            color: #fff;
            background: rgba(29, 99, 237, 0.85);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
        }
        .video-card .card-body {
            padding: 14px 16px 16px;
        }
        .video-card .card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.45;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 44px;
        }
        .video-card .card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .video-card .update-time {
            font-size: 12px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            transition: all var(--transition);
            margin-bottom: 10px;
        }
        .rank-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-default);
        }
        .rank-number {
            font-family: var(--font-data);
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            min-width: 42px;
            text-align: center;
        }
        .rank-number.top {
            color: var(--signal-orange);
        }
        .rank-content {
            flex: 1;
            min-width: 0;
        }
        .rank-content .rank-title {
            font-size: 14px;
            font-weight: 650;
            color: var(--text);
            margin-bottom: 4px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .rank-content .rank-meta {
            font-size: 12px;
            color: var(--muted);
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .compare-block {
            padding: 20px 22px;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            background: #fff;
            transition: all var(--transition);
        }
        .compare-block:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }
        .compare-block .compare-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 12px;
        }
        .compare-block h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .compare-block p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.65;
        }
        .safety-strip {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 16px 20px;
            background: #F8FAFC;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            border-left: 3px solid var(--primary);
            font-size: 13px;
            color: var(--titanium);
            line-height: 1.7;
        }
        .safety-strip i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .cta-section {
            background: linear-gradient(135deg, #EAF1FE 0%, #F5F7FA 100%);
            border-bottom: 1px solid var(--border);
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: #F8FAFC;
            font-size: 14px;
            color: var(--text);
            transition: all var(--transition);
        }
        .form-input:hover {
            border-color: #CBD5E1;
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(29, 99, 237, 0.12);
        }
        .form-input::placeholder {
            color: #94A3B8;
        }
        .footer-logo {
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
        }
        .footer-logo span {
            color: var(--primary);
        }
        .footer-heading {
            font-size: 13px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.04em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 44px 0 20px;
            font-size: 13px;
            color: var(--muted);
        }
        .site-footer a {
            color: var(--muted);
            transition: color var(--transition);
        }
        .site-footer a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            margin-top: 28px;
            padding-top: 18px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: #94A3B8;
            text-align: center;
        }
        /* Header shrunk state */
        .site-header.shrunk .header-brand-row {
            padding: 0;
            height: 0;
            opacity: 0;
            overflow: hidden;
            pointer-events: none;
        }
        .site-header.shrunk .header-channel-row {
            padding: 0;
        }
        .site-header.shrunk .header-nav {
            padding: 12px 0;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            body {
                padding-top: 104px;
            }
            .header-nav {
                gap: 18px;
            }
        }
        @media (max-width: 768px) {
            .logo-text-desktop {
                display: none;
            }
            .logo-text-mobile {
                display: inline;
                font-size: 17px;
                font-weight: 800;
                color: var(--text);
            }
            .header-cta-link {
                padding: 6px 14px;
                font-size: 12px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 21px;
            }
            .data-number {
                font-size: 30px;
            }
            .header-brand-row {
                padding: 10px 0;
            }
            .hamburger {
                display: flex;
            }
            .header-channel-row {
                display: none;
            }
            .mobile-drawer {
                display: block;
            }
            body {
                padding-top: 56px;
            }
            .site-header.shrunk .header-brand-row {
                padding: 10px 0;
                height: auto;
                opacity: 1;
                pointer-events: auto;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 19px;
            }
            .video-card .card-title {
                font-size: 14px;
                min-height: 40px;
            }
            .rank-number {
                font-size: 20px;
                min-width: 34px;
            }
            .compare-block {
                padding: 16px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 13px;
            }
            .filter-pill {
                padding: 7px 15px;
                font-size: 12px;
            }
        }