/* roulang page: index */
:root {
            --color-primary-start: #0038A8;
            --color-primary-end: #001F5C;
            --color-primary: #0038A8;
            --color-accent: #FF2A04;
            --color-accent-hover: #D92200;
            --color-bg: #F2F4F7;
            --color-card: #FFFFFF;
            --color-heading: #0B0E1A;
            --color-body: #2C3540;
            --color-muted: #6F7885;
            --color-border: #DEE2E7;
            --color-success: #10B981;
            --color-footer-bg: #0B1426;
            --color-footer-text: #B0B8C5;
            --color-overlay: rgba(0, 0, 0, 0.55);
            --radius-card: 20px;
            --radius-service-card: 24px;
            --radius-btn: 40px;
            --radius-input: 12px;
            --radius-form-card: 28px;
            --radius-capsule: 50px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.04), 0 2px 6px rgba(0, 0, 0, 0.03);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-glow-primary: 0 6px 20px rgba(0, 56, 168, 0.35);
            --shadow-glow-accent: 0 6px 20px rgba(255, 42, 4, 0.3);
            --transition-fast: 0.2s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-stack-cn: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --font-stack-num: "DIN Alternate", "Roboto Condensed", "PingFang SC", "Microsoft YaHei", sans-serif;
            --max-width: 1280px;
            --nav-height: 72px;
            --nav-height-mobile: 60px;
            --section-gap: 100px;
            --section-gap-mobile: 60px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack-cn);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-body);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ HEADER / NAV ============ */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid transparent;
            transition: box-shadow var(--transition-normal), border-color var(--transition-normal), background var(--transition-normal);
        }

        .header.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
            border-bottom-color: rgba(0, 0, 0, 0.05);
            background: rgba(255, 255, 255, 0.97);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-heading);
            letter-spacing: -0.3px;
            white-space: nowrap;
            z-index: 1001;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary-start), var(--color-primary-end));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 16px;
            letter-spacing: 1px;
            flex-shrink: 0;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-list a {
            display: block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-body);
            border-radius: 8px;
            position: relative;
            transition: color var(--transition-normal), background var(--transition-fast);
        }

        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform var(--transition-normal);
        }

        .nav-list a:hover {
            color: var(--color-primary);
            background: rgba(0, 56, 168, 0.04);
        }

        .nav-list a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-list a:active {
            color: var(--color-primary-end);
        }

        /* 汉堡按钮 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            z-index: 1001;
            cursor: pointer;
            background: none;
            border: none;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-heading);
            border-radius: 3px;
            transition: transform var(--transition-normal), opacity var(--transition-normal);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* 移动端导航遮罩 */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 999;
            background: rgba(11, 20, 38, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-slow);
        }

        .mobile-nav-overlay.active {
            display: flex;
            opacity: 1;
            pointer-events: all;
        }

        .mobile-nav-overlay a {
            display: block;
            width: 80%;
            max-width: 360px;
            text-align: center;
            padding: 16px 24px;
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            border-radius: 14px;
            transition: background var(--transition-fast), color var(--transition-fast);
            letter-spacing: 0.5px;
        }

        .mobile-nav-overlay a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }
        .mobile-nav-overlay a:active {
            background: rgba(255, 255, 255, 0.18);
        }

        /* ============ HERO ============ */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding-top: var(--nav-height);
            background-image: linear-gradient(160deg, #0038A8 0%, #002872 40%, #001F5C 100%), url('/assets/images/backpic/back-1.webp');
            background-blend-mode: overlay;
            background-size: cover, cover;
            background-position: center, center;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 30% 20%, rgba(255, 255, 255, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 70%, rgba(0, 56, 168, 0.3) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(255, 42, 4, 0.08) 0%, transparent 40%);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            padding-top: 20px;
            padding-bottom: 40px;
        }

        .hero-content {
            color: #fff;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-capsule);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .hero h1 {
            font-size: 54px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 18px;
            color: #fff;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .hero h1 .highlight {
            background: linear-gradient(180deg, transparent 60%, rgba(255, 42, 4, 0.35) 60%);
            display: inline;
            padding: 0 2px;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.65;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            max-width: 440px;
        }

        .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 34px;
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 16px;
            border-radius: var(--radius-btn);
            transition: all var(--transition-normal);
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.15);
            letter-spacing: 0.3px;
        }

        .hero-cta:hover {
            box-shadow: 0 8px 30px rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
            color: var(--color-primary-end);
        }

        .hero-cta .arrow {
            display: inline-block;
            transition: transform var(--transition-normal);
        }
        .hero-cta:hover .arrow {
            transform: translateX(4px);
        }

        /* Hero 右侧数据徽章 */
        .hero-badges {
            display: flex;
            flex-direction: column;
            gap: 16px;
            align-items: flex-end;
        }

        .hero-badge-card {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            padding: 18px 24px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            color: #fff;
            display: flex;
            align-items: center;
            gap: 16px;
            animation: pulseGlow 3s ease-in-out infinite;
            transition: all var(--transition-normal);
            cursor: default;
            min-width: 260px;
        }

        .hero-badge-card:nth-child(2) {
            animation-delay: 0.6s;
            margin-right: 30px;
        }
        .hero-badge-card:nth-child(3) {
            animation-delay: 1.2s;
            margin-right: 15px;
        }

        .hero-badge-card:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.35);
            transform: translateX(-6px);
        }

        .hero-badge-num {
            font-family: var(--font-stack-num);
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            line-height: 1;
        }

        .hero-badge-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.3;
            font-weight: 500;
        }

        @keyframes pulseGlow {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.12);
            }
            50% {
                box-shadow: 0 0 24px 4px rgba(255, 255, 255, 0.2);
            }
        }

        /* ============ METRICS 指标看板 ============ */
        .metrics {
            padding: var(--section-gap) 0;
            background: var(--color-bg);
        }

        .metrics-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .metrics-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--color-heading);
            letter-spacing: -0.5px;
            margin-bottom: 10px;
        }

        .metrics-header p {
            color: var(--color-muted);
            font-size: 16px;
            max-width: 500px;
            margin: 0 auto;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            cursor: default;
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 56, 168, 0.03);
            border-radius: var(--radius-card);
            transition: background var(--transition-normal);
        }

        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .metric-card:hover::before {
            background: rgba(0, 56, 168, 0.07);
        }

        .metric-card:hover .metric-num {
            color: var(--color-accent);
        }

        .metric-num {
            font-family: var(--font-stack-num);
            font-size: 44px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
            transition: color var(--transition-normal);
        }

        .metric-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-body);
            position: relative;
            z-index: 1;
        }

        .metric-sub {
            font-size: 12px;
            color: var(--color-muted);
            margin-top: 4px;
            position: relative;
            z-index: 1;
        }

        /* ============ SERVICES 服务矩阵 ============ */
        .services {
            padding: var(--section-gap) 0;
            background: #fff;
        }

        .services-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .services-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--color-heading);
            letter-spacing: -0.5px;
            margin-bottom: 10px;
        }
        .services-header p {
            color: var(--color-muted);
            font-size: 16px;
            max-width: 500px;
            margin: 0 auto;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--color-card);
            border-radius: var(--radius-service-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }

        .service-card:hover {
            box-shadow: var(--shadow-card-hover), 0 0 0 1px rgba(0, 56, 168, 0.2);
            transform: translateY(-4px);
        }

        .service-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
            background: #e8ecf1;
        }

        .service-card-body {
            padding: 24px 28px 28px;
        }

        .service-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 8px;
            letter-spacing: -0.2px;
        }

        .service-card-body p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .service-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            transition: all var(--transition-normal);
            letter-spacing: 0.2px;
        }
        .service-card-link .arrow-sm {
            display: inline-block;
            transition: transform var(--transition-normal);
        }
        .service-card-link:hover {
            color: var(--color-accent);
        }
        .service-card-link:hover .arrow-sm {
            transform: translateX(5px);
        }

        /* ============ COMPARISON 对比 ============ */
        .comparison {
            padding: var(--section-gap) 0;
            background: var(--color-bg);
        }

        .comparison-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .comparison-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--color-heading);
            letter-spacing: -0.5px;
            margin-bottom: 10px;
        }
        .comparison-header p {
            color: var(--color-muted);
            font-size: 16px;
            max-width: 500px;
            margin: 0 auto;
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            max-width: 900px;
            margin: 0 auto;
        }

        .compare-card {
            border-radius: var(--radius-card);
            padding: 36px 32px;
            transition: all var(--transition-normal);
        }

        .compare-card.left {
            background: #f8f9fb;
            border: 1px solid #e4e7ec;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
        }

        .compare-card.right {
            background: var(--color-card);
            border: 2px solid rgba(0, 56, 168, 0.25);
            box-shadow: 0 0 0 8px rgba(0, 56, 168, 0.05), 0 8px 30px rgba(0, 0, 0, 0.06);
            position: relative;
        }

        .compare-card.right::before {
            content: '✓ 推荐方案';
            position: absolute;
            top: -14px;
            right: 24px;
            background: var(--color-success);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }

        .compare-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 24px;
            letter-spacing: -0.3px;
        }

        .compare-card.left h3 {
            color: var(--color-muted);
        }

        .compare-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 13px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            gap: 12px;
        }
        .compare-row:last-child {
            border-bottom: none;
        }

        .compare-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-body);
        }
        .compare-card.left .compare-label {
            color: var(--color-muted);
        }

        .compare-value {
            font-family: var(--font-stack-num);
            font-size: 15px;
            font-weight: 700;
            white-space: nowrap;
        }
        .compare-card.left .compare-value {
            color: var(--color-muted);
        }
        .compare-card.right .compare-value {
            color: var(--color-primary);
        }

        .compare-gain {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: var(--color-success);
            padding: 3px 10px;
            border-radius: 12px;
            margin-left: 6px;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        /* ============ FAQ ============ */
        .faq {
            padding: var(--section-gap) 0;
            background: #fff;
        }

        .faq-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .faq-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--color-heading);
            letter-spacing: -0.5px;
            margin-bottom: 10px;
        }
        .faq-header p {
            color: var(--color-muted);
            font-size: 16px;
            max-width: 500px;
            margin: 0 auto;
        }

        .faq-list {
            max-width: 720px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            transition: all var(--transition-normal);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 0;
            font-size: 18px;
            font-weight: 600;
            color: var(--color-heading);
            text-align: left;
            gap: 16px;
            transition: color var(--transition-normal);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 56, 168, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-normal);
            font-size: 18px;
            line-height: 1;
            color: var(--color-primary);
            font-weight: 700;
        }

        .faq-item.active .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer-wrapper {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

        .faq-item.active .faq-answer-wrapper {
            max-height: 300px;
        }

        .faq-answer {
            padding: 0 0 20px 0;
            font-size: 16px;
            color: var(--color-body);
            line-height: 1.7;
            border-left: 2px solid transparent;
            padding-left: 0;
            transition: all var(--transition-normal);
        }

        .faq-item.active .faq-answer {
            border-left-color: var(--color-primary);
            padding-left: 16px;
        }

        .faq-cta-inline {
            text-align: center;
            margin-top: 36px;
        }
        .faq-cta-inline a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--color-primary);
            transition: all var(--transition-normal);
        }
        .faq-cta-inline a:hover {
            background: rgba(0, 56, 168, 0.06);
            box-shadow: var(--shadow-glow-primary);
        }
        .faq-cta-inline .arrow {
            transition: transform var(--transition-normal);
        }
        .faq-cta-inline a:hover .arrow {
            transform: translateX(4px);
        }

        /* ============ CTA 转化表单区 ============ */
        .cta-section {
            padding: var(--section-gap) 0;
            background-image: linear-gradient(160deg, rgba(0, 56, 168, 0.9) 0%, rgba(0, 31, 92, 0.94) 100%), url('/assets/images/backpic/back-2.webp');
            background-blend-mode: overlay;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.04) 0%, transparent 65%);
            pointer-events: none;
        }

        .cta-card {
            position: relative;
            z-index: 2;
            max-width: 560px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-form-card);
            padding: 44px 40px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
        }

        .cta-card h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-heading);
            text-align: center;
            margin-bottom: 8px;
            letter-spacing: -0.4px;
        }
        .cta-card .cta-sub {
            text-align: center;
            color: var(--color-muted);
            font-size: 15px;
            margin-bottom: 28px;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .cta-form input {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid var(--color-border);
            border-radius: var(--radius-input);
            font-size: 15px;
            color: var(--color-heading);
            background: #fafbfc;
            transition: all var(--transition-normal);
        }

        .cta-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(0, 56, 168, 0.08);
            background: #fff;
            outline: none;
        }

        .cta-form input::placeholder {
            color: #b0b8c4;
        }

        .cta-submit {
            width: 100%;
            padding: 15px 24px;
            background: linear-gradient(135deg, var(--color-primary-start), var(--color-primary-end));
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            letter-spacing: 0.4px;
            transition: all var(--transition-normal);
            box-shadow: 0 4px 16px rgba(0, 56, 168, 0.25);
        }
        .cta-submit:hover {
            box-shadow: var(--shadow-glow-primary);
            background: linear-gradient(135deg, #0045c8, #002a7a);
            transform: translateY(-1px);
        }
        .cta-submit:active {
            transform: scale(0.98);
        }

        .cta-form-feedback {
            text-align: center;
            font-size: 14px;
            color: var(--color-success);
            margin-top: 8px;
            font-weight: 600;
            display: none;
        }
        .cta-form-feedback.show {
            display: block;
            animation: fadeInUp 0.4s ease;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ============ FOOTER ============ */
        .footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 56px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
            font-size: 20px;
            font-weight: 700;
        }
        .footer-brand .logo-icon {
            background: linear-gradient(135deg, #fff, #d0d8e8);
            color: var(--color-primary);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--color-footer-text);
            line-height: 1.6;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col a {
            font-size: 14px;
            color: var(--color-footer-text);
            transition: color var(--transition-normal);
        }
        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.3px;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            .hero-content {
                order: 1;
            }
            .hero-badges {
                order: 2;
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: center;
                gap: 12px;
                align-items: center;
            }
            .hero-badge-card {
                min-width: auto;
                flex: 1 1 auto;
                padding: 14px 18px;
                border-radius: 16px;
                gap: 10px;
            }
            .hero-badge-card:nth-child(2),
            .hero-badge-card:nth-child(3) {
                margin-right: 0;
            }
            .hero-badge-num {
                font-size: 28px;
            }
            .hero h1 {
                font-size: 40px;
            }
            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
                max-width: 500px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 60px;
                --nav-height: var(--nav-height-mobile);
            }
            html {
                scroll-padding-top: var(--nav-height-mobile);
            }

            .header .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-list {
                display: none;
            }
            .hamburger {
                display: flex;
            }

            .hero {
                min-height: auto;
                padding-top: calc(var(--nav-height-mobile) + 30px);
                padding-bottom: 50px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-badges {
                gap: 10px;
            }
            .hero-badge-card {
                padding: 12px 14px;
                border-radius: 14px;
                gap: 8px;
            }
            .hero-badge-num {
                font-size: 24px;
            }
            .hero-badge-label {
                font-size: 11px;
            }

            .metrics-header h2,
            .services-header h2,
            .comparison-header h2,
            .faq-header h2 {
                font-size: 26px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-card {
                padding: 24px 16px;
            }
            .metric-num {
                font-size: 34px;
            }

            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card-img {
                height: 160px;
            }
            .service-card-body {
                padding: 18px 20px 22px;
            }

            .comparison-grid {
                gap: 20px;
            }
            .compare-card {
                padding: 24px 20px;
            }
            .compare-card.right::before {
                top: -12px;
                right: 16px;
                font-size: 11px;
                padding: 4px 10px;
            }

            .faq-question {
                font-size: 16px;
                padding: 16px 0;
            }
            .faq-answer {
                font-size: 14px;
            }

            .cta-card {
                padding: 28px 20px;
                border-radius: 22px;
            }
            .cta-card h2 {
                font-size: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }
            .footer-brand p {
                max-width: 100%;
                margin: 0 auto;
            }
            .footer-col ul {
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero h1 {
                font-size: 29px;
                letter-spacing: -0.5px;
            }
            .hero-badges {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }
            .hero-badge-card {
                justify-content: center;
                text-align: center;
                padding: 14px 16px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .metric-num {
                font-size: 28px;
            }
            .metric-label {
                font-size: 13px;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .hero-cta {
                padding: 13px 26px;
                font-size: 15px;
            }
            .compare-card {
                padding: 20px 16px;
            }
        }