/* roulang page: index */
:root {
            --primary: #0E8388;
            --primary-hover: #0a666a;
            --primary-light: rgba(14, 131, 136, 0.08);
            --accent: #FF8C32;
            --accent-hover: #e6751d;
            --bg-light: #F8FAF9;
            --bg-white: #FFFFFF;
            --bg-dark: #112022;
            --bg-dark-card: #182c2f;
            --text-title: #1E292A;
            --text-body: #4B5556;
            --text-muted: #8A9A9A;
            --border-color: rgba(14, 131, 136, 0.15);
            --shadow-sm: 0 4px 20px -2px rgba(14, 131, 136, 0.06);
            --shadow-lg: 0 14px 34px -4px rgba(14, 131, 136, 0.14);
            --radius-card: 16px;
            --radius-btn: 9999px;
            --container-max: 1240px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: var(--text-body);
            line-height: 1.78;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

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

        button, input, select {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        /* 统一双行导航 */
        .top-utility-bar {
            background-color: #0b1a1c;
            color: #92a4a4;
            font-size: 0.825rem;
            padding: 0.45rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .top-utility-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .utility-meta span {
            margin-right: 1.2rem;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

        .main-sticky-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .brand-logo svg {
            width: 32px;
            height: 32px;
            fill: var(--primary);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            list-style: none;
        }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-title);
            position: relative;
            padding: 0.35rem 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-color: var(--primary);
            transition: width 0.25s ease;
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.65rem 1.6rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            box-shadow: var(--shadow-sm);
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background-color: var(--accent-hover);
            transform: translateY(-2px);
        }
        .btn-outline {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline:hover {
            background-color: var(--primary-light);
        }

        .mobile-hamburger {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
        }
        .mobile-hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-title);
            margin: 5px 0;
            transition: 0.3s;
        }

        /* 移动端菜单抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 105px;
            left: 0;
            width: 100%;
            background: #fff;
            padding: 1.5rem;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            border-top: 1px solid var(--border-color);
            z-index: 998;
        }
        .mobile-drawer.open {
            display: block;
        }
        .mobile-drawer ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }

        /* 基础 Section */
        section {
            padding: 5rem 0;
            position: relative;
        }
        .section-alt {
            background-color: #fff;
        }
        .section-dark {
            background-color: var(--bg-dark);
            color: #cbd5e1;
        }
        .section-header {
            margin-bottom: 3.5rem;
            text-align: center;
        }
        .section-header.text-left {
            text-align: left;
        }
        .section-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.825rem;
            letter-spacing: 1px;
            padding: 0.3rem 0.9rem;
            border-radius: 9999px;
            margin-bottom: 0.85rem;
            text-transform: uppercase;
        }
        .section-dark .section-badge {
            background-color: rgba(14, 131, 136, 0.2);
            color: #4edcd8;
        }
        .section-title {
            font-size: 2.15rem;
            color: var(--text-title);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }
        .section-dark .section-title {
            color: #ffffff;
        }
        .section-desc {
            max-width: 760px;
            margin: 0 auto;
            color: var(--text-body);
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .section-dark .section-desc {
            color: #9eb1b4;
        }

        /* 板块 1：Bento 首屏 */
        .hero-section {
            padding: 3rem 0 4.5rem;
            background: linear-gradient(180deg, rgba(14,131,136,0.04) 0%, rgba(248,250,249,1) 100%);
        }
        .bento-grid {
            display: grid;
            grid-template-columns: 1.8fr 1.2fr;
            grid-template-rows: auto auto;
            gap: 1.5rem;
        }
        .bento-main {
            grid-row: span 2;
            background: #fff;
            border-radius: var(--radius-card);
            padding: 3.2rem 3rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            position: relative;
            overflow: hidden;
        }
        .bento-main::after {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(14, 131, 136, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero-h1 {
            font-size: 2.75rem;
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.25;
            margin-bottom: 1.2rem;
            letter-spacing: -0.8px;
        }
        .hero-p {
            font-size: 1.1rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 2rem;
        }
        .hero-actions {
            display: flex;
            gap: 1rem;
            align-items: center;
            margin-bottom: 2rem;
        }
        .hero-stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            border-top: 1px solid rgba(14,131,136,0.1);
            padding-top: 1.5rem;
            margin-top: 1rem;
            gap: 1rem;
        }
        .stat-item h4 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }
        .stat-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.35rem;
        }

        .bento-sub-1, .bento-sub-2 {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            padding: 1.8rem;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 1.5rem;
            position: relative;
            overflow: hidden;
        }
        .bento-sub-img {
            width: 140px;
            height: 130px;
            border-radius: 12px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .bento-sub-content h3 {
            font-size: 1.2rem;
            color: var(--text-title);
            margin-bottom: 0.45rem;
            font-weight: 700;
        }
        .bento-sub-content p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        .bento-cta-strip {
            grid-column: span 2;
            background: #10292b;
            color: #fff;
            border-radius: var(--radius-card);
            padding: 1.4rem 2.2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 8px 24px rgba(17, 32, 34, 0.15);
        }
        .strip-text {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 1.05rem;
        }
        .strip-tag {
            background: var(--accent);
            color: #fff;
            font-size: 0.8rem;
            padding: 0.2rem 0.6rem;
            border-radius: 4px;
            font-weight: 700;
        }

        /* 板块 2：核心功能底座 */
        .tech-showcase-grid {
            display: grid;
            grid-template-columns: 1fr 1.15fr;
            gap: 3.5rem;
            align-items: center;
        }
        .showcase-media {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .showcase-media img {
            width: 100%;
            height: 480px;
            object-fit: cover;
        }
        .showcase-badge-float {
            position: absolute;
            bottom: 1.5rem;
            left: 1.5rem;
            background: rgba(17, 32, 34, 0.88);
            backdrop-filter: blur(10px);
            color: #fff;
            padding: 1rem 1.4rem;
            border-radius: 12px;
            border: 1px solid rgba(255,255,255,0.15);
            max-width: 320px;
        }
        .showcase-badge-float strong {
            display: block;
            color: #4edcd8;
            font-size: 0.95rem;
            margin-bottom: 0.25rem;
        }
        .showcase-badge-float p {
            font-size: 0.85rem;
            color: #d1dede;
            line-height: 1.5;
        }
        .feature-points-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
            margin-top: 2rem;
        }
        .feature-item {
            display: flex;
            gap: 1.2rem;
        }
        .feature-icon-box {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.25rem;
            flex-shrink: 0;
            border: 1px solid var(--border-color);
        }
        .feature-text h3 {
            font-size: 1.25rem;
            color: var(--text-title);
            margin-bottom: 0.4rem;
        }
        .feature-text p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* 板块 3：核心优势 6卡格 */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .adv-card {
            background: #fff;
            padding: 2.2rem 1.8rem;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }
        .adv-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
        }
        .adv-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 1.4rem;
        }
        .adv-icon svg {
            width: 26px;
            height: 26px;
            fill: var(--primary);
        }
        .adv-card h3 {
            font-size: 1.25rem;
            color: var(--text-title);
            margin-bottom: 0.75rem;
            font-weight: 700;
        }
        .adv-card p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* 板块 4：定制产品方案 3卡高低对比 */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            align-items: stretch;
        }
        .tier-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            padding: 2.5rem 2rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease;
        }
        .tier-card:hover {
            transform: translateY(-4px);
        }
        .tier-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 16px 36px rgba(14, 131, 136, 0.18);
            transform: scale(1.03);
            z-index: 2;
        }
        .tier-card.featured:hover {
            transform: scale(1.03) translateY(-4px);
        }
        .featured-tag {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            padding: 0.25rem 1.2rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 700;
            box-shadow: 0 4px 10px rgba(255, 140, 50, 0.3);
        }
        .tier-header h3 {
            font-size: 1.45rem;
            color: var(--text-title);
            margin-bottom: 0.6rem;
        }
        .tier-header p {
            font-size: 0.95rem;
            color: var(--text-body);
            margin-bottom: 1.5rem;
        }
        .tier-list {
            list-style: none;
            margin-bottom: 2rem;
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }
        .tier-list li {
            font-size: 0.925rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            color: var(--text-body);
        }
        .tier-list li svg {
            width: 18px;
            height: 18px;
            fill: var(--primary);
            flex-shrink: 0;
        }
        .platform-badge {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
            text-align: center;
        }

        /* 板块 5：全景技术方案（深色块） */
        .tech-matrix-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
        }
        .tech-matrix-left h2 {
            font-size: 2.3rem;
            color: #fff;
            margin-bottom: 1.4rem;
            line-height: 1.25;
        }
        .tech-matrix-left p {
            color: #9eb1b4;
            margin-bottom: 1.8rem;
            line-height: 1.8;
            font-size: 1.05rem;
        }
        .terminal-box {
            background: var(--bg-dark-card);
            border: 1px solid rgba(78, 220, 216, 0.25);
            border-radius: 12px;
            padding: 1.8rem;
            font-family: Consolas, Monaco, monospace;
            color: #d1dede;
            font-size: 0.88rem;
            line-height: 1.6;
        }
        .terminal-box .code-highlight {
            color: #4edcd8;
            font-weight: 700;
        }
        .tech-box-stack {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .glow-card {
            background: rgba(24, 44, 47, 0.6);
            border: 1px solid rgba(14, 131, 136, 0.35);
            border-radius: var(--radius-card);
            padding: 1.8rem;
            backdrop-filter: blur(8px);
            transition: border-color 0.3s ease;
        }
        .glow-card:hover {
            border-color: #4edcd8;
        }
        .glow-card h4 {
            color: #fff;
            font-size: 1.18rem;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .glow-card p {
            font-size: 0.925rem;
            color: #9eb1b4;
            line-height: 1.7;
        }

        /* 板块 6：场景时间轴闭环 */
        .scenario-timeline {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            position: relative;
        }
        .scenario-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .scenario-thumb {
            height: 200px;
            width: 100%;
            object-fit: cover;
        }
        .scenario-body {
            padding: 1.8rem;
        }
        .scenario-phase {
            font-size: 0.8rem;
            font-weight: 800;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 0.4rem;
        }
        .scenario-body h3 {
            font-size: 1.25rem;
            color: var(--text-title);
            margin-bottom: 0.8rem;
        }
        .scenario-body p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 1.2rem;
        }
        .user-quote {
            background: var(--bg-light);
            border-left: 3px solid var(--accent);
            padding: 0.8rem 1rem;
            font-size: 0.88rem;
            color: var(--text-title);
            font-style: italic;
        }

        /* 板块 7：统计数据带 (Metric Ribbon) */
        .metric-ribbon {
            background: linear-gradient(90deg, #0e8388 0%, #156266 100%);
            color: #fff;
            padding: 3.5rem 0;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .metric-block h3 {
            font-size: 2.85rem;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 0.5rem;
            font-variant-numeric: tabular-nums;
            letter-spacing: -1px;
        }
        .metric-block p {
            font-size: 0.95rem;
            color: #d8f1f2;
        }

        /* 板块 8：用户口碑 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .review-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            padding: 2.2rem 1.8rem;
            box-shadow: var(--shadow-sm);
        }
        .review-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.2rem;
        }
        .review-avatar {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            object-fit: cover;
            border: 2px solid var(--primary-light);
        }
        .review-author h4 {
            font-size: 1.05rem;
            color: var(--text-title);
            font-weight: 700;
        }
        .review-author span {
            font-size: 0.825rem;
            color: var(--accent);
            font-weight: 600;
        }
        .star-bar {
            color: #ffb703;
            margin-bottom: 0.85rem;
            font-size: 0.9rem;
            letter-spacing: 2px;
        }
        .review-text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* 板块 9：资讯证据与动态 */
        .news-header-flex {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 3rem;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease;
        }
        .news-card:hover {
            transform: translateY(-4px);
        }
        .news-img {
            height: 190px;
            width: 100%;
            object-fit: cover;
        }
        .news-content {
            padding: 1.8rem;
        }
        .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
            display: inline-block;
        }
        .news-content h3 {
            font-size: 1.2rem;
            color: var(--text-title);
            line-height: 1.45;
            margin-bottom: 0.75rem;
            font-weight: 700;
        }
        .news-content p {
            font-size: 0.925rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* 板块 10：FAQ 手风琴 */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color 0.25s ease;
        }
        .faq-question {
            padding: 1.35rem 1.8rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-title);
            background: transparent;
            width: 100%;
            border: none;
            text-align: left;
        }
        .faq-icon-arrow {
            width: 20px;
            height: 20px;
            fill: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.8rem;
            color: var(--text-body);
            font-size: 0.98rem;
            line-height: 1.8;
            background: #fafcfb;
        }
        .faq-item.active .faq-answer {
            max-height: 260px;
            padding: 0 1.8rem 1.4rem;
        }

        /* 板块 11：保障条 (Trust Bar) */
        .trust-bar {
            background: #fff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 3rem 0;
        }
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .trust-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .trust-icon svg {
            width: 24px;
            height: 24px;
            fill: var(--primary);
        }
        .trust-info h4 {
            font-size: 1.05rem;
            color: var(--text-title);
            font-weight: 700;
            margin-bottom: 0.2rem;
        }
        .trust-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 板块 12：底部强效转化与体验预约区 */
        .conversion-section {
            padding: 5.5rem 0;
            background: radial-gradient(circle at 10% 20%, rgba(14,131,136,0.06) 0%, rgba(248,250,249,1) 90%);
        }
        .conversion-card {
            background: #fff;
            border-radius: 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1.25fr;
        }
        .conversion-left {
            background: linear-gradient(145deg, #10292b 0%, #173b3e 100%);
            color: #fff;
            padding: 3.5rem 3rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .conversion-left h3 {
            font-size: 2rem;
            line-height: 1.3;
            margin-bottom: 1rem;
        }
        .conversion-left p {
            color: #a9bebf;
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 2rem;
        }
        .qr-mock-box {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            background: rgba(255,255,255,0.08);
            padding: 1.2rem;
            border-radius: 12px;
            border: 1px dashed rgba(255,255,255,0.25);
        }
        .qr-placeholder {
            width: 88px;
            height: 88px;
            background: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            padding: 4px;
        }
        .qr-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }
        .qr-meta h5 {
            font-size: 1rem;
            margin-bottom: 0.35rem;
        }
        .qr-meta span {
            font-size: 0.825rem;
            color: #a9bebf;
            display: block;
        }

        .conversion-right {
            padding: 3.5rem 3.5rem;
        }
        .conversion-right h4 {
            font-size: 1.5rem;
            color: var(--text-title);
            margin-bottom: 0.5rem;
            font-weight: 800;
        }
        .conversion-right .form-subtitle {
            font-size: 0.925rem;
            color: var(--text-body);
            margin-bottom: 2rem;
        }
        .lead-form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .form-group label {
            display: block;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 0.45rem;
        }
        .form-group input, .form-group select {
            width: 100%;
            padding: 0.85rem 1.1rem;
            border: 1px solid #d4dede;
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.25s ease;
            background: #fafcfc;
        }
        .form-group input:focus, .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(14, 131, 136, 0.12);
        }
        .submit-btn-pulse {
            width: 100%;
            padding: 1rem;
            font-size: 1.05rem;
            font-weight: 700;
            border-radius: var(--radius-btn);
            background: linear-gradient(90deg, #0E8388 0%, #139ca2 100%);
            color: #fff;
            border: none;
            cursor: pointer;
            box-shadow: 0 8px 24px rgba(14, 131, 136, 0.3);
            position: relative;
            overflow: hidden;
            animation: pulse-glow 2.5s infinite;
        }
        @keyframes pulse-glow {
            0% { box-shadow: 0 0 0 0 rgba(14, 131, 136, 0.45); }
            70% { box-shadow: 0 0 0 16px rgba(14, 131, 136, 0); }
            100% { box-shadow: 0 0 0 0 rgba(14, 131, 136, 0); }
        }

        /* 底部悬浮转化胶囊条 */
        .floating-action-bar {
            position: fixed;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%) translateY(120px);
            background: rgba(17, 32, 34, 0.95);
            backdrop-filter: blur(12px);
            color: #fff;
            padding: 0.75rem 1.8rem;
            border-radius: 9999px;
            display: flex;
            align-items: center;
            gap: 2rem;
            box-shadow: 0 12px 35px rgba(0,0,0,0.25);
            z-index: 990;
            border: 1px solid rgba(255,255,255,0.15);
            transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .floating-action-bar.visible {
            transform: translateX(-50%) translateY(0);
        }
        .floating-text strong {
            color: #4edcd8;
            font-size: 0.95rem;
            margin-right: 0.5rem;
        }
        .floating-text span {
            font-size: 0.88rem;
            color: #cbd5e1;
        }

        /* 页脚区域 */
        footer {
            background-color: var(--bg-dark);
            color: #92a4a4;
            padding: 4.5rem 0 2.5rem;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 0.925rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 3rem;
            margin-bottom: 3.5rem;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 1.3rem;
            font-weight: 700;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .footer-links a:hover {
            color: #4edcd8;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .bento-grid {
                grid-template-columns: 1fr;
            }
            .bento-cta-strip {
                grid-column: span 1;
            }
            .advantage-grid, .tier-grid, .scenario-timeline, .news-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tier-card.featured {
                transform: none;
            }
            .tier-card.featured:hover {
                transform: translateY(-4px);
            }
            .metrics-grid, .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tech-matrix-grid, .conversion-card, .tech-showcase-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .top-utility-bar {
                display: none;
            }
            .nav-menu, .nav-action-btn {
                display: none;
            }
            .mobile-hamburger {
                display: block;
            }
            .hero-h1 {
                font-size: 2.15rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .advantage-grid, .tier-grid, .scenario-timeline, .news-grid, .reviews-grid, .metrics-grid, .trust-grid {
                grid-template-columns: 1fr;
            }
            .conversion-right, .conversion-left {
                padding: 2.2rem 1.5rem;
            }
            .floating-action-bar {
                width: 90%;
                justify-content: space-between;
                padding: 0.6rem 1.2rem;
            }
            .floating-text span {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
        }