/* roulang page: index */
:root {
      --primary: #0F4C5C;
      --primary-dark: #0A323D;
      --primary-light: #1A697E;
      --accent: #FB8B24;
      --accent-hover: #E3740D;
      --dark: #1B262C;
      --slate: #475569;
      --light-slate: #94A3B8;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-alt: #F1F5F9;
      --border: #E2E8F0;
      --border-focus: #CBD5E1;
      --radius: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
      --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.03);
      --font-base: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-base);
      color: var(--dark);
      background-color: var(--bg-light);
      line-height: 1.65;
      -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;
      outline: none;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    /* 顶通信息栏 */
    .top-bar {
      background-color: var(--dark);
      color: var(--light-slate);
      font-size: 0.8125rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .top-bar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #34D399;
    }
    .top-bar-dot {
      width: 7px;
      height: 7px;
      background: #34D399;
      border-radius: 50%;
      box-shadow: 0 0 8px #34D399;
    }

    /* 主导航 */
    .header-main {
      background-color: var(--bg-white);
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
    }
    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.01em;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: var(--primary);
      color: #fff;
      border-radius: var(--radius);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 1.75rem;
      list-style: none;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--slate);
      position: relative;
      padding: 0.35rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.625rem 1.25rem;
      border-radius: var(--radius);
      font-size: 0.875rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      line-height: 1;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #fff;
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-1px);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #fff;
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      border-color: var(--border);
      color: var(--dark);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(15, 76, 92, 0.04);
    }
    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 1.5rem;
      color: var(--dark);
      cursor: pointer;
    }

    /* 板块通用 */
    section {
      padding: 5rem 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-dark {
      background-color: var(--dark);
      color: #fff;
    }
    .section-header {
      margin-bottom: 3rem;
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--accent);
      margin-bottom: 0.5rem;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 1rem;
      color: var(--dark);
    }
    .section-dark .section-title {
      color: #fff;
    }
    .section-title::after {
      content: "";
      display: block;
      width: 48px;
      height: 4px;
      background: var(--accent);
      margin: 0.75rem auto 0;
      border-radius: 2px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--slate);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: var(--light-slate);
    }

    /* 01. Bento 首屏 Hero */
    #section-hero {
      padding: 2.5rem 0 4.5rem;
      background: linear-gradient(180deg, #F8FAFC 0%, #EDF2F7 100%);
    }
    .bento-hero-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr;
      grid-template-rows: auto auto;
      gap: 1.5rem;
    }
    .bento-main {
      grid-row: span 2;
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      padding: 3rem 2.5rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
      box-shadow: var(--shadow-md);
      position: relative;
      overflow: hidden;
    }
    .bento-main::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
    }
    .hero-h1 {
      font-size: 2.35rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--dark);
      letter-spacing: -0.02em;
      margin-bottom: 1.25rem;
    }
    .hero-lead {
      font-size: 1.05rem;
      color: var(--slate);
      line-height: 1.75;
      margin-bottom: 2rem;
    }
    .hero-btn-group {
      display: flex;
      gap: 1rem;
      align-items: center;
      flex-wrap: wrap;
      margin-bottom: 2rem;
    }
    .hero-meta-row {
      display: flex;
      align-items: center;
      gap: 1.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid var(--border);
      font-size: 0.875rem;
      color: var(--slate);
    }
    .hero-meta-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .bento-sub-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      padding: 1.75rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform 0.3s ease;
    }
    .bento-sub-card:hover {
      transform: translateY(-3px);
    }
    .bento-card-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .bento-card-p {
      font-size: 0.875rem;
      color: var(--slate);
      line-height: 1.6;
    }
    .bento-banner-cta {
      grid-column: span 2;
      background: var(--primary);
      color: #fff;
      border-radius: var(--radius-lg);
      padding: 1.25rem 2rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      box-shadow: var(--shadow-md);
    }
    .bento-banner-text {
      display: flex;
      align-items: center;
      gap: 1rem;
      font-size: 0.95rem;
    }
    .bento-pill {
      background: rgba(255, 255, 255, 0.15);
      padding: 0.25rem 0.75rem;
      border-radius: 999px;
      font-size: 0.75rem;
      font-weight: 600;
    }

    /* 02. 品牌故事与平台架构 */
    .about-split {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 3rem;
      align-items: center;
    }
    .about-text h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: var(--dark);
    }
    .about-text p {
      font-size: 0.95rem;
      color: var(--slate);
      margin-bottom: 1.25rem;
      line-height: 1.75;
    }
    .tech-specs-box {
      background: var(--bg-alt);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 1.25rem;
      margin-top: 1.5rem;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }
    .spec-item-label {
      font-size: 0.75rem;
      color: var(--slate);
      text-transform: uppercase;
    }
    .spec-item-val {
      font-size: 1rem;
      font-weight: 700;
      color: var(--primary);
    }
    .about-media-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border);
      position: relative;
    }
    .about-media-box img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .media-badge-float {
      position: absolute;
      bottom: 1.25rem;
      right: 1.25rem;
      background: rgba(27, 38, 44, 0.85);
      backdrop-filter: blur(8px);
      color: #fff;
      padding: 0.6rem 1rem;
      border-radius: var(--radius);
      font-size: 0.8rem;
      border: 1px solid rgba(255,255,255,0.1);
    }

    /* 03. 系列导航六维矩阵 */
    .grid-matrix-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }
    .matrix-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 2rem 1.5rem;
      transition: all 0.3s ease;
      position: relative;
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(15, 76, 92, 0.3);
    }
    .matrix-icon-wrap {
      width: 48px;
      height: 48px;
      background: rgba(15, 76, 92, 0.08);
      color: var(--primary);
      border-radius: var(--radius);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      margin-bottom: 1.25rem;
      font-weight: bold;
    }
    .matrix-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: var(--dark);
    }
    .matrix-card p {
      font-size: 0.875rem;
      color: var(--slate);
      line-height: 1.65;
    }

    /* 04. 爆款网格热门权益方案 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
      align-items: stretch;
    }
    .tier-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 2.25rem 1.75rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      transition: all 0.3s ease;
    }
    .tier-card.featured {
      border: 2px solid var(--accent);
      box-shadow: var(--shadow-lg);
      transform: scale(1.03);
      z-index: 2;
    }
    .tier-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.25rem 0.75rem;
      border-radius: 999px;
      letter-spacing: 0.05em;
    }
    .tier-title {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 0.5rem;
    }
    .tier-desc {
      font-size: 0.875rem;
      color: var(--slate);
      margin-bottom: 1.5rem;
    }
    .tier-price-row {
      margin-bottom: 1.5rem;
      padding-bottom: 1.5rem;
      border-bottom: 1px solid var(--border);
    }
    .tier-price {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--primary);
    }
    .tier-unit {
      font-size: 0.875rem;
      color: var(--slate);
      margin-left: 0.25rem;
    }
    .tier-feature-list {
      list-style: none;
      margin-bottom: 2rem;
      flex-grow: 1;
    }
    .tier-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 0.625rem;
      font-size: 0.875rem;
      color: var(--slate);
      margin-bottom: 0.75rem;
    }
    .tier-check {
      color: #10B981;
      font-weight: bold;
    }

    /* 05. 结果数据条 Metrics */
    #section-metrics {
      background: var(--primary-dark);
      color: #fff;
      padding: 3.5rem 0;
      border-top: 1px solid rgba(255,255,255,0.08);
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .metrics-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-num {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.1;
      color: var(--accent);
      margin-bottom: 0.5rem;
    }
    .metric-label {
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 0.25rem;
      color: #F8FAFC;
    }
    .metric-sub {
      font-size: 0.8125rem;
      color: var(--light-slate);
    }

    /* 06. 深色自律理念与赛事风控 */
    .philosophy-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .chain-steps {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }
    .chain-step-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius);
      padding: 1.25rem;
      display: flex;
      gap: 1.25rem;
      align-items: center;
      transition: background 0.3s ease;
    }
    .chain-step-card:hover {
      background: rgba(255, 255, 255, 0.08);
    }
    .chain-step-index {
      width: 42px;
      height: 42px;
      background: var(--accent);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .chain-step-info h5 {
      font-size: 1.05rem;
      margin-bottom: 0.25rem;
      color: #fff;
    }
    .chain-step-info p {
      font-size: 0.85rem;
      color: var(--light-slate);
      line-height: 1.5;
    }

    /* 07. 典型会员使用场景演示 */
    .scenarios-wrap {
      display: flex;
      flex-direction: column;
      gap: 3.5rem;
    }
    .scenario-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .scenario-row.reverse {
      direction: rtl;
    }
    .scenario-row.reverse > * {
      direction: ltr;
    }
    .scenario-content h3 {
      font-size: 1.6rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: var(--dark);
    }
    .scenario-content p {
      font-size: 0.95rem;
      color: var(--slate);
      line-height: 1.7;
      margin-bottom: 1.5rem;
    }
    .scenario-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .badge-soft {
      background: rgba(15, 76, 92, 0.08);
      color: var(--primary);
      padding: 0.35rem 0.75rem;
      border-radius: 999px;
      font-size: 0.8125rem;
      font-weight: 600;
    }
    .scenario-img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
    }
    .scenario-img-box img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    /* 08. 系统演示舞台 Showcase */
    .showcase-window {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      max-width: 1000px;
      margin: 0 auto;
    }
    .window-header {
      background: #F1F5F9;
      padding: 0.75rem 1.25rem;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 1px solid var(--border);
    }
    .window-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .window-dot.red { background: #EF4444; }
    .window-dot.yellow { background: #F59E0B; }
    .window-dot.green { background: #10B981; }
    .window-title {
      font-size: 0.8125rem;
      color: var(--slate);
      margin-left: 0.75rem;
      font-weight: 500;
    }
    .window-body {
      padding: 1.5rem;
      background: #FAFAFA;
    }
    .window-body img {
      width: 100%;
      height: auto;
      max-height: 480px;
      object-fit: cover;
      border-radius: var(--radius);
      border: 1px solid var(--border);
    }

    /* 09. 品牌故事深度叙事 */
    .stories-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
    .story-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .story-quote {
      font-size: 1.05rem;
      font-style: italic;
      color: var(--dark);
      line-height: 1.7;
      margin-bottom: 1.5rem;
      position: relative;
    }
    .story-quote::before {
      content: "“";
      font-size: 3rem;
      color: var(--accent);
      position: absolute;
      top: -20px;
      left: -15px;
      opacity: 0.3;
      font-family: serif;
    }
    .story-user {
      display: flex;
      align-items: center;
      gap: 1rem;
      border-top: 1px solid var(--border);
      padding-top: 1.25rem;
    }
    .story-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }
    .story-user-meta h6 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark);
    }
    .story-user-meta span {
      font-size: 0.8125rem;
      color: var(--slate);
    }

    /* 10. 全网用户口碑与评价墙 */
    .reviews-masonry {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }
    .review-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 1.5rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 0.875rem;
      margin-bottom: 0.75rem;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 0.875rem;
      color: var(--slate);
      line-height: 1.6;
      margin-bottom: 1rem;
    }
    .review-author {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
      color: var(--light-slate);
      border-top: 1px dashed var(--border);
      padding-top: 0.75rem;
    }
    .review-name {
      font-weight: 600;
      color: var(--dark);
    }

    /* 11. 理性观赛资讯专栏 */
    .news-wrapper {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 2rem;
    }
    .news-featured-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-featured-img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }
    .news-featured-body {
      padding: 1.75rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-tag {
      font-size: 0.75rem;
      color: var(--primary);
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 0.5rem;
    }
    .news-featured-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 0.75rem;
      line-height: 1.4;
    }
    .news-featured-desc {
      font-size: 0.875rem;
      color: var(--slate);
      line-height: 1.65;
      margin-bottom: 1.25rem;
    }
    .news-list-stack {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .news-list-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 1.25rem;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-list-item:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .news-list-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 0.5rem;
      line-height: 1.4;
    }
    .news-list-excerpt {
      font-size: 0.8125rem;
      color: var(--slate);
      line-height: 1.5;
      margin-bottom: 0.75rem;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .news-date {
      font-size: 0.75rem;
      color: var(--light-slate);
    }

    /* 12. 会员服务 FAQ */
    .faq-accordion-box {
      max-width: 840px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    details.faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: all 0.25s ease;
    }
    details.faq-item[open] {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    summary.faq-summary {
      padding: 1.25rem 1.5rem;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--dark);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    summary.faq-summary::-webkit-details-marker {
      display: none;
    }
    summary.faq-summary::after {
      content: "+";
      font-size: 1.35rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    details[open] summary.faq-summary::after {
      content: "−";
      transform: rotate(180deg);
    }
    .faq-body {
      padding: 0 1.5rem 1.25rem;
      font-size: 0.9375rem;
      color: var(--slate);
      line-height: 1.7;
      border-top: 1px dashed var(--border);
      padding-top: 1rem;
    }

    /* 13. 底部终极转化 CTA */
    #section-cta {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #fff;
      padding: 5rem 0;
      text-align: center;
    }
    .cta-card-inner {
      max-width: 780px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 3.5rem 2rem;
      backdrop-filter: blur(10px);
      box-shadow: var(--shadow-lg);
    }
    .cta-heading {
      font-size: 2.25rem;
      font-weight: 800;
      margin-bottom: 1.25rem;
      color: #fff;
    }
    .cta-subtext {
      font-size: 1.05rem;
      color: #E2E8F0;
      line-height: 1.7;
      margin-bottom: 2rem;
    }
    .cta-action-bar {
      display: flex;
      justify-content: center;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .cta-hint {
      margin-top: 1.25rem;
      font-size: 0.8125rem;
      color: var(--light-slate);
    }

    /* 页脚 Footer */
    .site-footer {
      background: var(--dark);
      color: var(--light-slate);
      padding: 4.5rem 0 2rem;
      font-size: 0.875rem;
      border-top: 1px solid rgba(255,255,255,0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h5 {
      font-size: 1.15rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 1rem;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 1.25rem;
      color: #94A3B8;
    }
    .footer-col h6 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 1.25rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-col a:hover {
      color: #fff;
      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;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8125rem;
    }

    /* 移动端响应式适配 */
    @media (max-width: 1024px) {
      .bento-hero-grid, .about-split, .philosophy-grid, .scenario-row, .news-wrapper {
        grid-template-columns: 1fr;
      }
      .bento-main {
        grid-row: auto;
      }
      .bento-banner-cta {
        grid-column: span 1;
      }
      .grid-matrix-6, .products-grid, .reviews-masonry {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        height: 64px;
      }
      .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 2rem;
        gap: 1.25rem;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        display: none;
      }
      .nav-menu.active {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .header-actions .btn {
        display: none;
      }
      .grid-matrix-6, .products-grid, .reviews-masonry, .stories-grid, .metrics-bar-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 1.85rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .cta-heading {
        font-size: 1.75rem;
      }
      .scenario-row.reverse {
        direction: ltr;
      }
      .tech-specs-box {
        grid-template-columns: 1fr;
      }
    }