/* roulang page: index */
:root {
            --primary: #0F2F38;
            --primary-dark: #091316;
            --accent-green: #00D084;
            --accent-cyan: #00A3FF;
            --text-main: #1C282C;
            --text-sub: #556970;
            --text-muted: #82969E;
            --bg-light: #F8FAFB;
            --bg-card: #FFFFFF;
            --border-color: #E5EBF0;
            --border-hover: #00D084;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-full: 9999px;
            --shadow-subtle: 0 4px 20px rgba(15, 47, 56, 0.04);
            --shadow-card: 0 12px 30px rgba(15, 47, 56, 0.08);
            --shadow-elevated: 0 20px 45px rgba(15, 47, 56, 0.14);
            --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 顶部双行导航系统 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .header-topbar {
            background-color: var(--primary-dark);
            color: #9AB4BC;
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .topbar-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .topbar-info span {
            margin-right: 20px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .topbar-status {
            color: var(--accent-green);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .topbar-status::before {
            content: "";
            display: inline-block;
            width: 7px;
            height: 7px;
            background: var(--accent-green);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--accent-green);
        }

        .header-main {
            padding: 14px 0;
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .logo-symbol {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, #1c5261 100%);
            border: 2px solid var(--accent-green);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-green);
            font-weight: 900;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(0, 208, 132, 0.2);
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 28px;
            align-items: center;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-sub);
            position: relative;
            padding: 6px 0;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-green);
            transition: var(--transition);
        }

        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* 通用按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            gap: 8px;
            line-height: 1;
            text-align: center;
        }

        .btn-primary {
            background-color: var(--accent-green);
            color: var(--primary-dark);
            box-shadow: 0 4px 18px rgba(0, 208, 132, 0.35);
        }

        .btn-primary:hover {
            background-color: #00ea95;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 208, 132, 0.45);
        }

        .btn-dark {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .btn-dark:hover {
            background-color: #17424e;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--primary);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(15, 47, 56, 0.03);
            transform: translateY(-2px);
        }

        .btn-outline-white {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #FFFFFF;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: var(--accent-green);
            transform: translateY(-2px);
        }

        /* 移动端菜单按钮 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--primary);
            cursor: pointer;
        }

        /* 基础板块容器与通栏修饰 */
        section {
            padding: 90px 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 54px;
            text-align: center;
        }

        .section-header.text-left {
            text-align: left;
        }

        .section-tag {
            display: inline-block;
            background-color: rgba(0, 208, 132, 0.12);
            color: #008753;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-tag.tag-dark {
            background-color: rgba(0, 208, 132, 0.18);
            color: var(--accent-green);
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .section-title.light {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 780px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-desc.light {
            color: #A2B9C0;
        }

        /* 板块一：首屏直播路演与AI大屏联动 Banner (#hero) */
        .hero-section {
            padding: 80px 0 100px;
            background: linear-gradient(180deg, #FFFFFF 0%, #F1F6F8 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -100px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 163, 255, 0.08) 0%, rgba(0, 208, 132, 0.04) 70%, transparent 100%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 46px;
            font-weight: 900;
            line-height: 1.25;
            color: var(--primary);
            letter-spacing: -1px;
            margin-bottom: 20px;
        }

        .hero-content h1 span {
            background: linear-gradient(135deg, var(--primary) 0%, #008753 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-summary {
            font-size: 17px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 34px;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 38px;
        }

        .hero-signals {
            display: flex;
            align-items: center;
            gap: 28px;
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
        }

        .hero-signal-item {
            font-size: 14px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-signal-item strong {
            color: var(--primary);
            font-size: 15px;
        }

        /* 蓝图：Hero直播路演与开播倒计时卡片 */
        .live-showcase-card {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: 0 25px 60px rgba(9, 19, 22, 0.35);
            overflow: hidden;
            color: #FFFFFF;
            position: relative;
        }

        .live-banner-cover {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

        .live-banner-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.85);
            transition: transform 0.6s ease;
        }

        .live-showcase-card:hover .live-banner-cover img {
            transform: scale(1.04);
        }

        .live-badge-status {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(9, 19, 22, 0.85);
            backdrop-filter: blur(8px);
            padding: 6px 12px;
            border-radius: var(--radius-full);
            font-size: 12px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 6px;
            color: #FF5A5F;
            border: 1px solid rgba(255, 90, 95, 0.3);
        }

        .live-badge-status .pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #FF5A5F;
            box-shadow: 0 0 10px #FF5A5F;
        }

        .live-card-body {
            padding: 26px;
        }

        .live-title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
            color: #FFFFFF;
        }

        .live-meta {
            font-size: 14px;
            color: #8CA0A8;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .countdown-strip {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            margin-bottom: 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .countdown-label {
            font-size: 13px;
            color: #9BB0B8;
        }

        .countdown-timer {
            display: flex;
            gap: 8px;
            font-family: monospace;
            font-size: 16px;
            font-weight: 800;
            color: var(--accent-green);
        }

        .time-box {
            background: rgba(0, 208, 132, 0.12);
            padding: 4px 8px;
            border-radius: 4px;
            border: 1px solid rgba(0, 208, 132, 0.3);
        }

        /* 板块二：指标数据驱动看板 (#analytics) */
        .analytics-section {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            padding: 60px 0;
            margin-top: -30px;
            position: relative;
            z-index: 10;
        }

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

        .analytic-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            transition: var(--transition);
        }

        .analytic-card:hover {
            transform: translateY(-4px);
            border-color: var(--accent-green);
            box-shadow: var(--shadow-card);
        }

        .analytic-num {
            font-size: 38px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
            font-feature-settings: "tnum";
        }

        .analytic-num span {
            color: var(--accent-green);
            font-size: 24px;
            margin-left: 4px;
        }

        .analytic-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .analytic-detail {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 板块三：品牌与核心技术底座介绍 (#platform-intro) */
        .intro-section {
            background-color: #FFFFFF;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .intro-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }

        .intro-visual img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .intro-visual-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(15, 47, 56, 0.9);
            color: #FFFFFF;
            padding: 12px 20px;
            border-radius: var(--radius-md);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(0, 208, 132, 0.4);
            font-size: 13px;
            line-height: 1.5;
        }

        .spec-item-box {
            background: var(--bg-light);
            border-left: 4px solid var(--accent-cyan);
            padding: 14px 18px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            font-size: 14px;
            color: var(--text-sub);
        }

        .spec-item-box strong {
            color: var(--primary);
            display: block;
            margin-bottom: 4px;
        }

        /* 板块四：六维核心优势网格区 (#advantages) */
        .advantages-section {
            background-color: var(--bg-light);
        }

        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .adv-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            transition: var(--transition);
            position: relative;
        }

        .adv-card:hover {
            transform: translateY(-4px);
            border-color: var(--accent-green);
            box-shadow: var(--shadow-card);
        }

        .adv-icon {
            width: 52px;
            height: 52px;
            background: rgba(0, 208, 132, 0.1);
            color: var(--accent-green);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 900;
            margin-bottom: 20px;
        }

        .adv-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .adv-text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* 板块五：热门招商矩阵与产品族 (#services-matrix) */
        .services-section {
            background-color: #FFFFFF;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-tier-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
            position: relative;
        }

        .service-tier-card.featured {
            background: #FFFFFF;
            border: 2px solid var(--accent-green);
            box-shadow: var(--shadow-card);
        }

        .service-tier-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-elevated);
        }

        .tier-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background: rgba(15, 47, 56, 0.08);
            color: var(--primary);
            margin-bottom: 16px;
            width: fit-content;
        }

        .service-tier-card.featured .tier-badge {
            background: var(--accent-green);
            color: var(--primary-dark);
        }

        .tier-name {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .tier-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 24px;
        }

        .tier-features {
            list-style: none;
            margin-bottom: 30px;
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
        }

        .tier-features li {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .tier-features li::before {
            content: "✓";
            color: var(--accent-green);
            font-weight: 900;
        }

        /* 板块六：传统模式 vs AI 驱动成效对比区 (#comparison) */
        .comparison-section {
            background: #F2F6F8;
        }

        .comparison-wrapper {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-subtle);
            overflow: hidden;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .compare-table th, .compare-table td {
            padding: 22px 28px;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
        }

        .compare-table th {
            background: var(--primary-dark);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
        }

        .compare-table th.highlight-col {
            background: #133D48;
            color: var(--accent-green);
            border-bottom: 2px solid var(--accent-green);
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table td.dimmed {
            color: var(--text-muted);
            background: #FCFDFE;
        }

        .compare-table td.highlight-cell {
            background: rgba(0, 208, 132, 0.04);
            font-weight: 700;
            color: var(--primary);
        }

        /* 板块七：深色沉浸式实证案例与发展理念区 (#dark-philosophy) */
        .dark-philosophy-section {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .philosophy-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .philosophy-info h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            color: #FFFFFF;
        }

        .philosophy-info p {
            color: #A0B5BD;
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .case-card-dark {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(10px);
        }

        .case-card-dark img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 22px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .case-stat-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
        }

        .case-stat-item strong {
            display: block;
            font-size: 24px;
            color: var(--accent-green);
            font-weight: 800;
        }

        .case-stat-item span {
            font-size: 12px;
            color: #8DA1A9;
        }

        /* 板块八：用户实战故事与落地转化剖析 (#user-stories) */
        .stories-section {
            background-color: #FFFFFF;
        }

        .story-flow-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            position: relative;
        }

        .story-step-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            position: relative;
        }

        .step-num-badge {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: var(--accent-green);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 15px;
            margin-bottom: 18px;
        }

        .story-step-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .story-step-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* 板块九：全域招商里程碑与演进历程 (#milestones) */
        .milestones-section {
            background: #F4F7F9;
        }

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

        .timeline-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 26px 20px;
            position: relative;
            transition: var(--transition);
        }

        .timeline-item:hover {
            transform: translateY(-4px);
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-card);
        }

        .timeline-year {
            font-size: 20px;
            font-weight: 900;
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }

        .timeline-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .timeline-text {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* 板块十：行业客户与招商主管真实评价 (#testimonials) */
        .testimonials-section {
            background: #FFFFFF;
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .testimonial-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            position: relative;
        }

        .quote-icon {
            font-size: 40px;
            line-height: 1;
            color: rgba(15, 47, 56, 0.12);
            font-family: Georgia, serif;
            margin-bottom: 10px;
        }

        .testimonial-quote {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.75;
            margin-bottom: 24px;
            font-style: normal;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 14px;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }

        .author-avatar {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }

        .author-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
        }

        .author-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 板块十一：新闻资讯与产业动态 (#news-insights) */
        .news-section {
            background: #F8FAFB;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-bottom: 40px;
        }

        .news-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .news-thumb {
            height: 190px;
            width: 100%;
            object-fit: cover;
        }

        .news-body {
            padding: 24px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: inline-block;
        }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.45;
            margin-bottom: 12px;
        }

        .news-excerpt {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        .news-action {
            text-align: center;
        }

        /* 板块十二：合规背书与平台保障体系 (#guarantee) */
        .guarantee-section {
            background: #FFFFFF;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 60px 0;
        }

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

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px;
        }

        .guarantee-symbol {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 208, 132, 0.12);
            color: #008753;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 18px;
            flex-shrink: 0;
        }

        .guarantee-info h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .guarantee-info p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.5;
        }

        /* 板块十三：高频答疑 FAQ 手风琴 (#faq) */
        .faq-section {
            background: #F8FAFB;
        }

        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            user-select: none;
        }

        .faq-icon-arrow {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon-arrow {
            transform: rotate(180deg);
            color: var(--accent-green);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out;
            padding: 0 24px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }

        /* 板块十四：底部业务转化与演示预约 (#conversion-cta) */
        .conversion-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #10343E 100%);
            color: #FFFFFF;
            padding: 80px 0;
        }

        .conversion-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }

        .conversion-info h2 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
        }

        .conversion-info p {
            color: #A4B9C2;
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .conversion-perks {
            display: flex;
            gap: 24px;
        }

        .perk-item {
            font-size: 14px;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .perk-item::before {
            content: "✓";
            color: var(--accent-green);
            font-weight: 900;
        }

        .booking-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
            color: var(--text-main);
        }

        .booking-card h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .booking-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 22px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-input {
            width: 100%;
            padding: 13px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-main);
            transition: var(--transition);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--accent-green);
            box-shadow: 0 0 0 3px rgba(0, 208, 132, 0.15);
        }

        .btn-submit {
            width: 100%;
            padding: 14px;
            font-size: 16px;
            font-weight: 700;
            background: var(--accent-green);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit:hover {
            background: #00ea95;
            box-shadow: 0 6px 20px rgba(0, 208, 132, 0.4);
        }

        /* 全局页脚系统 */
        .site-footer {
            background-color: var(--primary-dark);
            color: #8C9FA6;
            padding: 70px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 50px;
        }

        .footer-brand h4 {
            color: #FFFFFF;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-brand p {
            line-height: 1.7;
            margin-bottom: 20px;
            font-size: 13px;
        }

        .footer-col h5 {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #8C9FA6;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-green);
        }

        .footer-contact-item {
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .hero-grid, .intro-grid, .philosophy-grid, .conversion-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .analytics-grid, .timeline-container, .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .advantages-grid, .services-grid, .story-flow-grid, .testimonials-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-menu {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .section-title {
                font-size: 26px;
            }
            .analytics-grid, .guarantee-grid, .timeline-container {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .header-topbar {
                display: none;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }