:root {
            --bg-primary: #121417;
            --bg-secondary: #0D0E10;
            --bg-card: #191C20;
            --bg-card-light: #1F2328;
            --accent-gold: #C9A961;
            --accent-orange: #E58A2F;
            --accent-red: #D94F3D;
            --text-primary: #F2EFE9;
            --text-secondary: #A8ADB4;
            --text-muted: #5C626A;
            --border-color: rgba(255, 255, 255, 0.08);
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.45);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.55);
            --radius-btn: 3px;
            --radius-card: 6px;
            --radius-pill: 999px;
            --container-max: 1200px;
            --font-mono: "JetBrains Mono", "Roboto Mono", "Courier New", monospace;
        }

        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input {
            font: inherit;
            border: none;
            background: none;
        }

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

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(18, 20, 23, 0.97);
            border-bottom: 1px solid var(--border-color);
            backdrop-filter: blur(8px);
        }
        .site-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-orange));
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .nav-logo {
            display: flex;
            flex-direction: column;
            gap: 1px;
            position: relative;
            padding-left: 14px;
            border-left: 3px solid var(--accent-gold);
        }
        .nav-logo-main {
            font-size: 17px;
            font-weight: 900;
            color: var(--text-primary);
            line-height: 1.3;
            letter-spacing: 0.5px;
        }
        .nav-logo-sub {
            font-size: 12px;
            color: var(--accent-gold);
            letter-spacing: 2px;
            line-height: 1.4;
        }
        .nav-badge {
            position: absolute;
            right: -8px;
            top: -6px;
            background: var(--accent-red);
            color: #fff;
            font-size: 10px;
            padding: 1px 7px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 30px;
        }
        .nav-link {
            font-size: 15px;
            color: var(--text-secondary);
            font-weight: 500;
            position: relative;
            padding: 4px 0;
            transition: color 0.2s ease;
        }
        .nav-link:hover {
            color: var(--accent-gold);
        }
        .nav-link.active {
            color: var(--text-primary);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-gold);
        }
        .nav-cta-link {
            background: var(--accent-orange);
            color: #141517 !important;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 14px;
            transition: background 0.2s ease, transform 0.2s ease;
        }
        .nav-cta-link:hover {
            background: #F09B3F;
            transform: translateY(-1px);
        }
        .nav-cta-link:active {
            transform: translateY(1px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 170px 0 90px;
            background: linear-gradient(rgba(18, 20, 23, 0.85), rgba(13, 14, 16, 0.94)), url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
            border-bottom: 1px solid var(--border-color);
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 52px 52px;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }
        .hero-title {
            font-size: 42px;
            font-weight: 900;
            line-height: 1.22;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .hero-title .gold {
            color: var(--accent-gold);
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 32px;
        }
        .hero-ctas {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 48px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.2s ease;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent-orange);
            color: #141517;
        }
        .btn-primary:hover {
            background: #F09B3F;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(201, 169, 97, 0.6);
            outline-offset: 2px;
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent-gold);
            border: 1px solid var(--accent-gold);
        }
        .btn-secondary:hover {
            border-color: #E8C97E;
            background: rgba(201, 169, 97, 0.08);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(201, 169, 97, 0.5);
            outline-offset: 2px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 34px;
            padding: 22px 0;
            border-top: 1px solid var(--border-color);
        }
        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .stat-num {
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 700;
            color: var(--accent-gold);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
        }
        .hero-corner {
            position: absolute;
            width: 36px;
            height: 36px;
            border: 2px solid rgba(201, 169, 97, 0.35);
            border-radius: 2px;
        }
        .hero-corner.tl {
            top: 120px;
            left: 20px;
            border-right: none;
            border-bottom: none;
        }
        .hero-corner.br {
            bottom: 30px;
            right: 20px;
            border-left: none;
            border-top: none;
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 90px 0;
        }
        .section-header {
            margin-bottom: 54px;
            max-width: 800px;
        }
        .section-num {
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--accent-gold);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .section-num::before {
            content: '';
            width: 24px;
            height: 1px;
            background: var(--accent-gold);
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 640px;
        }

        /* ===== 平台保障条 ===== */
        .trust-strip {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-color);
            padding: 32px 0;
        }
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .trust-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .trust-icon {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--accent-gold);
            border-radius: 4px;
            color: var(--accent-gold);
            font-size: 17px;
            background: rgba(201, 169, 97, 0.06);
        }
        .trust-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 2px;
        }
        .trust-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 功能分区 ===== */
        .func-section {
            background: var(--bg-primary);
        }
        .func-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }
        .func-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 34px 30px;
            position: relative;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            overflow: hidden;
        }
        .func-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: var(--accent-gold);
            opacity: 0.5;
            transition: opacity 0.25s ease;
        }
        .func-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-lg);
        }
        .func-card:hover::before {
            opacity: 1;
        }
        .func-card--wide {
            grid-column: span 7;
        }
        .func-card--narrow {
            grid-column: span 5;
        }
        .func-card--narrow2 {
            grid-column: span 5;
        }
        .func-card--wide2 {
            grid-column: span 7;
        }
        .func-num {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--accent-gold);
            display: block;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .func-title {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .func-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .func-link {
            font-size: 14px;
            color: var(--accent-gold);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .func-link i {
            transition: transform 0.2s ease;
        }
        .func-link:hover i {
            transform: translateX(3px);
        }
        .func-imgwrap {
            border-radius: var(--radius-card);
            overflow: hidden;
            margin-top: 18px;
        }
        .func-imgwrap img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .func-card:hover .func-imgwrap img {
            transform: scale(1.03);
        }

        /* ===== 使用场景 ===== */
        .scenario-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .scenario-timeline {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 44px;
            position: relative;
        }
        .scenario-timeline::before {
            content: '';
            position: absolute;
            top: 24px;
            left: 12%;
            right: 12%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-gold), var(--accent-orange), transparent);
        }
        .scenario-node {
            position: relative;
            padding-top: 60px;
        }
        .scenario-node::before {
            content: '';
            position: absolute;
            top: 16px;
            left: 0;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--bg-secondary);
            border: 3px solid var(--accent-gold);
            z-index: 2;
        }
        .scenario-node:nth-child(2)::before {
            border-color: var(--accent-orange);
        }
        .scenario-node:nth-child(3)::before {
            border-color: var(--accent-gold);
        }
        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 28px 26px;
            height: 100%;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .scenario-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-md);
        }
        .scenario-label {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--accent-orange);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .scenario-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .scenario-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== 成功案例 ===== */
        .cases-section {
            background: var(--bg-primary);
        }
        .case-archive {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .case-item {
            display: grid;
            grid-template-columns: 120px 1fr 1fr;
            gap: 28px;
            padding: 30px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            position: relative;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .case-item:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-md);
        }
        .case-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 20px;
            bottom: 20px;
            width: 3px;
            background: linear-gradient(180deg, var(--accent-gold), var(--accent-orange));
            opacity: 0.5;
        }
        .case-item:hover::before {
            opacity: 1;
        }
        .case-num {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--accent-gold);
            line-height: 1.1;
        }
        .case-body {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .case-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .case-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .case-result {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 8px;
            font-size: 14px;
        }
        .case-result-tag {
            background: rgba(201, 169, 97, 0.12);
            color: var(--accent-gold);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-weight: 500;
            font-size: 13px;
        }
        .case-imgwrap {
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 120px;
        }
        .case-imgwrap img {
            width: 100%;
            height: 130px;
            object-fit: cover;
        }

        /* ===== 价格 ===== */
        .price-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .price-grid {
            display: grid;
            grid-template-columns: 1fr 1.15fr 1fr;
            gap: 24px;
            align-items: stretch;
        }
        .price-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 36px 30px;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .price-card--featured {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-lg);
            background: linear-gradient(180deg, var(--bg-card-light), var(--bg-card));
        }
        .price-card:hover {
            border-color: var(--accent-gold);
        }
        .price-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--accent-orange);
            color: #141517;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            letter-spacing: 1px;
        }
        .price-name {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .price-note {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .price-list {
            margin-bottom: 28px;
            flex-grow: 1;
        }
        .price-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 7px 0;
            line-height: 1.65;
        }
        .price-list li i {
            color: var(--accent-gold);
            font-size: 13px;
            line-height: 1.8;
            margin-top: 2px;
        }
        .price-cta {
            display: block;
            text-align: center;
            padding: 13px 24px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 14px;
            transition: all 0.2s ease;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-primary);
        }
        .faq-list {
            max-width: 840px;
            border-top: 1px solid var(--border-color);
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 8px;
            cursor: pointer;
            list-style: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            transition: background 0.2s ease;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-item[open] summary {
            color: var(--accent-gold);
        }
        .faq-icon {
            font-size: 22px;
            font-weight: 300;
            color: var(--accent-gold);
            flex-shrink: 0;
            transition: transform 0.25s ease;
            font-family: var(--font-mono);
        }
        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
        }
        .faq-body {
            padding: 0 8px 24px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 92%;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background: linear-gradient(rgba(13, 14, 16, 0.92), rgba(18, 20, 23, 0.95)), url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat;
            border-top: 1px solid var(--border-color);
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .cta-desc {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }
        .cta-contact {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 30px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .cta-contact span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-contact i {
            color: var(--accent-gold);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 28px;
        }
        .footer-brand-name {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 10px;
        }
        .footer-brand-sub {
            font-size: 13px;
            color: var(--accent-gold);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-nav-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-nav-list li {
            margin-bottom: 10px;
        }
        .footer-nav-list a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .footer-nav-list a:hover {
            color: var(--accent-gold);
        }
        .footer-contact-info {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .footer-contact-info li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .footer-contact-info i {
            color: var(--accent-gold);
            margin-top: 4px;
            font-size: 13px;
            width: 16px;
        }
        .footer-copyright {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            padding-top: 8px;
        }

        /* ===== 移动端底部Tab ===== */
        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 200;
            background: rgba(18, 20, 23, 0.98);
            border-top: 1px solid var(--border-color);
            backdrop-filter: blur(10px);
            padding: 6px 4px 8px;
        }
        .tab-list {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
        }
        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 4px 8px;
            border-radius: 8px;
            color: var(--text-muted);
            font-size: 11px;
            transition: color 0.2s ease;
            min-width: 56px;
        }
        .tab-item i {
            font-size: 18px;
        }
        .tab-item.active {
            color: var(--accent-gold);
            background: rgba(201, 169, 97, 0.08);
        }
        .tab-item.active .tab-label {
            font-weight: 600;
        }
        .tab-item.cta-tab {
            color: var(--accent-orange);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .nav-links .nav-link {
                gap: 20px;
                font-size: 14px;
            }
            .func-card--wide,
            .func-card--narrow,
            .func-card--wide2,
            .func-card--narrow2 {
                grid-column: span 6;
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .case-item {
                grid-template-columns: 90px 1fr;
            }
            .case-imgwrap {
                grid-column: 1 / -1;
            }
            .hero-title {
                font-size: 34px;
            }
        }
        @media (max-width: 767px) {
            .site-header {
                position: fixed;
            }
            .nav-links {
                display: none;
            }
            .mobile-tabbar {
                display: block;
            }
            .nav-bar {
                height: 64px;
            }
            .nav-logo-main {
                font-size: 15px;
            }
            .nav-logo-sub {
                font-size: 11px;
            }
            .nav-badge {
                display: none;
            }
            body {
                padding-bottom: 66px;
            }
            .hero {
                padding: 130px 0 60px;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-stats {
                gap: 20px;
            }
            .stat-num {
                font-size: 22px;
            }
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .func-grid {
                grid-template-columns: 1fr;
            }
            .func-card--wide,
            .func-card--narrow,
            .func-card--wide2,
            .func-card--narrow2 {
                grid-column: span 1;
            }
            .scenario-timeline {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .scenario-timeline::before {
                display: none;
            }
            .scenario-node {
                padding-top: 20px;
            }
            .scenario-node::before {
                top: 8px;
                left: 8px;
                width: 12px;
                height: 12px;
            }
            .case-item {
                grid-template-columns: 1fr;
                padding: 20px;
                gap: 12px;
            }
            .case-num {
                font-size: 26px;
            }
            .case-imgwrap img {
                height: 100px;
            }
            .price-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .price-card--featured {
                order: -1;
            }
            .trust-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-section {
                padding: 70px 0;
            }
            .cta-title {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero-corner {
                display: none;
            }
            .container {
                padding: 0 16px;
            }
        }
        @media (max-width: 380px) {
            .hero-title {
                font-size: 22px;
            }
            .btn {
                padding: 12px 20px;
                font-size: 14px;
            }
        }

:root {
  --bg-dark: #121417;
  --bg-deep: #0D0E10;
  --bg-surface: #191C20;
  --bg-surface-2: #1F2328;
  --gold: #C9A961;
  --orange: #E58A2F;
  --red: #D94F3D;
  --text-main: #F2EFE9;
  --text-sub: #A8ADB4;
  --text-dim: #5C626A;
  --divider: rgba(255,255,255,0.08);
  --radius-btn: 3px;
  --radius-card: 6px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 6px 16px rgba(0,0,0,0.45);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.55);
  --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-mono: "JetBrains Mono","Roboto Mono",monospace;
  --container: 1200px;
  --space-section: 96px;
}
* ,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg-dark);color:var(--text-main);font-family:var(--font-sans);line-height:1.75;min-height:100vh;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:relative;z-index:100;background:rgba(13,14,16,0.96);border-bottom:1px solid var(--divider)}
.site-header::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--gold),transparent 70%)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;height:76px}
.nav-logo{display:flex;align-items:center;gap:10px;white-space:nowrap}
.nav-logo-main{font-size:20px;font-weight:900;color:var(--text-main);letter-spacing:-0.5px;transition:color .2s}
.nav-logo-main:hover{color:var(--gold)}
.nav-logo-sub{font-size:12px;color:var(--text-sub);border-left:1px solid var(--divider);padding-left:10px}
.nav-badge{background:var(--gold);color:#141517;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{font-size:14px;color:var(--text-sub);font-weight:500;transition:color .2s}
.nav-link:hover{color:var(--gold)}
.nav-link.active{color:var(--gold)}
.nav-cta-link{background:var(--orange);color:#141517;padding:10px 18px;border-radius:3px;font-weight:700}
.nav-cta-link:hover{background:#F09B3F;color:#141517}

/* Page Hero */
.page-hero{position:relative;padding:90px 0 70px;background:linear-gradient(rgba(13,14,16,.82),rgba(18,20,23,.92)),url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;border-bottom:1px solid var(--divider)}
.page-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.hero-inner{position:relative;z-index:2;max-width:980px}
.hero-breadcrumb{font-size:13px;color:var(--text-sub);margin-bottom:16px;font-family:var(--font-mono)}
.page-hero h1{font-size:44px;font-weight:900;line-height:1.2;letter-spacing:-0.5px;margin-bottom:20px}
.page-hero h1 .gold{color:var(--gold)}
.hero-lead{font-size:17px;color:var(--text-sub);max-width:720px;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-metrics{display:flex;gap:40px;margin-top:40px;flex-wrap:wrap}
.metric-item{display:flex;flex-direction:column;gap:4px;border-left:2px solid var(--gold);padding-left:16px}
.metric-num{font-family:var(--font-mono);font-size:28px;font-weight:700;color:var(--gold);line-height:1.1}
.metric-label{font-size:13px;color:var(--text-sub)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:3px;font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;transition:background .2s,transform .2s,box-shadow .2s;text-align:center}
.btn-primary{background:var(--orange);color:#141517}
.btn-primary:hover{background:#F09B3F;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border-color:var(--gold);color:var(--gold)}
.btn-outline:hover{background:rgba(201,169,97,.08);border-color:#dcc079}
.btn:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* Section common */
.section-head{position:relative;padding-left:18px;margin-bottom:48px}
.section-head::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--gold)}
.section-tag{font-family:var(--font-mono);font-size:13px;color:var(--gold);display:block;margin-bottom:10px;letter-spacing:2px}
.section-title{font-size:32px;font-weight:700;line-height:1.3}
.section-desc{color:var(--text-sub);margin-top:16px;font-size:16px;max-width:640px}

/* Intro */
.intro-bar{padding:80px 0;background:var(--bg-dark)}
.intro-grid{display:grid;grid-template-columns:1fr 340px;gap:48px;align-items:start}
.intro-text{font-size:16px;color:var(--text-sub);line-height:1.9}
.intro-text strong{color:var(--text-main)}
.intro-panel{background:var(--bg-surface);border:1px solid var(--divider);border-radius:6px;padding:24px;position:relative}
.intro-panel::before{content:"";position:absolute;top:-1px;left:24px;right:24px;height:2px;background:var(--gold)}
.intro-panel h3{font-size:16px;font-weight:700;margin-bottom:16px;color:var(--text-main)}
.impact-list li{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--divider);font-size:14px;color:var(--text-main)}
.impact-list li:last-child{border-bottom:none}
.impact-list li i{color:var(--gold);font-size:12px}

/* Modules */
.modules-section{padding:var(--space-section) 0;background:var(--bg-deep)}
.modules-wrap{display:flex;flex-direction:column;gap:80px}
.module-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.module-row.reverse .module-media{order:2}
.module-media{position:relative}
.module-media img{width:100%;height:320px;object-fit:cover;border-radius:6px;box-shadow:var(--shadow-lg);border:1px solid rgba(201,169,97,.25)}
.module-media::after{content:"";position:absolute;left:-10px;top:-10px;right:auto;bottom:auto;width:40px;height:40px;border-left:2px solid var(--gold);border-top:2px solid var(--gold);opacity:.5}
.module-content .module-num{font-family:var(--font-mono);font-size:14px;color:var(--orange);letter-spacing:2px;margin-bottom:12px;display:block}
.module-content h3{font-size:24px;font-weight:700;margin-bottom:16px}
.module-content p{color:var(--text-sub);margin-bottom:16px;font-size:15px;line-height:1.8}
.module-list li{position:relative;padding-left:22px;margin-bottom:10px;font-size:14px;color:var(--text-main)}
.module-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;background:var(--gold);transform:rotate(45deg)}

/* Process */
.process-section{padding:var(--space-section) 0;background:var(--bg-surface)}
.process-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0}
.process-step{position:relative;padding:24px 20px;border-right:1px solid var(--divider);text-align:center}
.process-step:last-child{border-right:none}
.process-step .step-num{font-family:var(--font-mono);font-size:32px;color:var(--gold);font-weight:700;display:block;margin-bottom:10px}
.process-step h3{font-size:16px;color:var(--text-main);margin-bottom:8px}
.process-step p{font-size:13px;color:var(--text-sub);line-height:1.6}

/* Cases */
.case-section{padding:var(--space-section) 0;background:var(--bg-deep)}
.case-list{position:relative}
.case-item{position:relative;padding-left:48px;padding-bottom:48px;border-left:2px solid var(--divider)}
.case-item:last-child{padding-bottom:0}
.case-item::before{content:"";position:absolute;left:-7px;top:6px;width:12px;height:12px;background:var(--gold);transform:rotate(45deg)}
.case-code{font-family:var(--font-mono);color:var(--orange);font-size:14px;letter-spacing:2px;display:block;margin-bottom:6px}
.case-item h3{font-size:22px;font-weight:700;margin-bottom:12px}
.case-item p{color:var(--text-sub);font-size:15px;line-height:1.8}
.case-meta{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}
.case-meta span{background:var(--bg-surface-2);border:1px solid var(--divider);padding:4px 12px;border-radius:999px;font-size:12px;color:var(--text-sub)}

/* FAQ */
.faq-section{padding:var(--space-section) 0;background:var(--bg-dark)}
.faq-list{max-width:860px}
.faq-item{background:var(--bg-surface);border:1px solid var(--divider);border-radius:6px;margin-bottom:14px;transition:background .2s,border-color .2s}
.faq-item:hover{background:rgba(255,255,255,.03)}
.faq-item[open]{border-color:rgba(201,169,97,.4)}
.faq-item summary{display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;padding:20px 24px;font-size:16px;font-weight:700;color:var(--text-main);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-family:var(--font-mono);font-size:22px;color:var(--gold);flex-shrink:0}
.faq-item[open] summary::after{content:"–"}
.faq-answer{padding:0 24px 20px;color:var(--text-sub);font-size:15px;line-height:1.8}

/* CTA */
.cta-section{padding:80px 0;background:linear-gradient(rgba(13,14,16,.85),rgba(13,14,16,.95)),url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;position:relative}
.cta-inner{background:var(--bg-surface-2);border:1px solid rgba(201,169,97,.3);border-radius:6px;padding:48px;position:relative;text-align:center;max-width:900px;margin:0 auto}
.cta-inner::before{content:"";position:absolute;top:-1px;left:24px;right:24px;height:2px;background:var(--gold)}
.cta-inner h2{font-size:28px;font-weight:700;margin-bottom:12px;color:var(--text-main)}
.cta-inner p{color:var(--text-sub);font-size:15px;margin-bottom:28px;line-height:1.8}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-contact-line{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin-top:24px;color:var(--text-sub);font-size:14px}
.cta-contact-line i{color:var(--gold);margin-right:6px}

/* Footer */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--divider);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.5fr;gap:48px;margin-bottom:40px}
.footer-brand-name{font-size:20px;font-weight:900;color:var(--text-main)}
.footer-brand-sub{font-size:13px;color:var(--gold);margin-top:4px}
.footer-desc{color:var(--text-sub);font-size:14px;line-height:1.8;margin-top:16px;max-width:360px}
.footer-nav-title{font-size:14px;font-weight:700;color:var(--text-main);margin-bottom:16px}
.footer-nav-list li{margin-bottom:10px}
.footer-nav-list a{color:var(--text-sub);font-size:14px;transition:color .2s}
.footer-nav-list a:hover{color:var(--gold)}
.footer-contact-info li{display:flex;align-items:flex-start;gap:10px;color:var(--text-sub);font-size:14px;margin-bottom:10px}
.footer-contact-info i{color:var(--gold);margin-top:4px}
.footer-copyright{border-top:1px solid var(--divider);padding-top:24px;color:var(--text-dim);font-size:13px;text-align:center}

/* Mobile bottom nav */
.mobile-bottom-nav{display:none}

/* Focus */
a:focus-visible,.btn:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* Responsive */
@media (max-width:1023px){
  .intro-grid{grid-template-columns:1fr}
  .module-row{grid-template-columns:1fr;gap:28px}
  .module-row.reverse .module-media{order:0}
  .process-steps{grid-template-columns:repeat(3,1fr);gap:16px 0}
  .process-step{border-right:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--space-section:64px}
  body{padding-bottom:74px}
  .nav-links{display:none}
  .nav-bar{height:64px}
  .nav-logo-main{font-size:16px}
  .nav-logo-sub{display:none}
  .page-hero{padding:50px 0 44px}
  .page-hero h1{font-size:34px}
  .hero-actions .btn{width:100%}
  .hero-metrics{gap:24px;margin-top:32px}
  .section-title{font-size:26px}
  .modules-wrap{gap:56px}
  .module-media img{height:240px}
  .process-steps{grid-template-columns:1fr}
  .process-step{border-right:none;text-align:left;padding-left:0}
  .case-item{padding-left:28px}
  .cta-inner{padding:32px 20px}
  .cta-inner h2{font-size:22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .mobile-bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:999;background:rgba(13,14,16,.98);border-top:1px solid var(--divider);justify-content:space-around;padding:8px 0;padding-bottom:calc(8px + env(safe-area-inset-bottom))}
  .bottom-nav-item{display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--text-sub);font-size:11px;padding:4px 8px;border-radius:8px;transition:color .2s}
  .bottom-nav-item i{font-size:18px}
  .bottom-nav-item.active{color:var(--gold)}
  .bottom-nav-item.active span{box-shadow:0 1px 0 var(--gold)}
}