/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-hover: #0d449b;
      --accent: #0284C7;
      --accent-teal: #00A896;
      --bg-base: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-dark: #0B132B;
      --bg-dark-card: #1C2541;
      --text-heading: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 6px -1px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(15, 82, 186, 0.06), 0 2px 6px -1px rgba(0, 0, 0, 0.02);
      --shadow-lg: 0 16px 32px -4px rgba(15, 82, 186, 0.12), 0 4px 12px -2px rgba(0, 0, 0, 0.04);
      --container-max: 1240px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-body);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    ul, ol {
      list-style: none;
    }

    button, input, select, textarea {
      font: inherit;
    }

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

    /* 顶部双行导航 */
    .top-utility-bar {
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.8125rem;
      color: var(--text-muted);
      padding: 7px 0;
    }
    .top-utility-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-utility-meta span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-right: 20px;
    }

    .main-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 4px 16px rgba(15, 23, 42, 0.03);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 1.25rem;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-icon-box {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 900;
      font-size: 1.15rem;
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.25);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-item {
      font-weight: 500;
      font-size: 0.9375rem;
      color: var(--text-heading);
      position: relative;
      padding: 6px 0;
    }
    .nav-item:hover, .nav-item.active {
      color: var(--primary);
    }
    .nav-item::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: var(--transition);
    }
    .nav-item:hover::after, .nav-item.active::after {
      width: 100%;
    }
    .nav-action-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      background-color: var(--primary);
      color: #FFF;
      font-size: 0.9rem;
      font-weight: 600;
      border: 1px solid var(--primary);
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.2);
    }
    .nav-action-btn:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 6px 16px rgba(15, 82, 186, 0.3);
      color: #FFF;
      transform: translateY(-1px);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-heading);
      padding: 8px;
    }

    /* 按钮通用组件 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
      border: 1px solid transparent;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFF;
      box-shadow: 0 6px 18px rgba(15, 82, 186, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(15, 82, 186, 0.32);
    }
    .btn-outline-light {
      background-color: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.35);
      color: #FFF;
      backdrop-filter: blur(6px);
    }
    .btn-outline-light:hover {
      background-color: #FFF;
      color: var(--text-heading);
    }
    .btn-secondary {
      background-color: #FFF;
      color: var(--primary);
      border-color: var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    /* 徽章 & 标签 */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 12px;
      border-radius: 9999px;
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 0.02em;
    }
    .badge-primary {
      background: rgba(15, 82, 186, 0.1);
      color: var(--primary);
    }
    .badge-accent {
      background: rgba(0, 168, 150, 0.15);
      color: #007567;
    }
    .badge-warning {
      background: #FEF3C7;
      color: #B45309;
    }
    .badge-dark {
      background: rgba(255, 255, 255, 0.16);
      color: #38BDF8;
      border: 1px solid rgba(56, 189, 248, 0.3);
    }

    /* 板块通用头部 */
    .section-spacing {
      padding: 96px 0;
      position: relative;
    }
    .section-spacing-alt {
      background-color: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      max-width: 760px;
      margin: 0 auto 56px auto;
      text-align: center;
    }
    .section-header.text-left {
      margin-left: 0;
      text-align: left;
    }
    .section-subtitle {
      text-transform: uppercase;
      font-size: 0.825rem;
      font-weight: 700;
      color: var(--accent);
      letter-spacing: 0.08em;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.025rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 1. Hero 板块（影视海报沉浸暗底视觉融合） */
    .hero-section {
      position: relative;
      background-color: #080D1A;
      color: #FFF;
      padding: 90px 0 110px 0;
      overflow: hidden;
      background-image: linear-gradient(180deg, rgba(8, 13, 26, 0.88) 0%, rgba(11, 19, 43, 0.94) 100%), url('/assets/images/64934e27d464cd5d.webp');
      background-size: cover;
      background-position: center;
      background-attachment: scroll;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.25;
      margin: 18px 0 20px 0;
      letter-spacing: -0.025em;
      color: #FFFFFF;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #38BDF8, #818CF8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 1.075rem;
      color: #CBD5E1;
      line-height: 1.85;
      margin-bottom: 32px;
      max-width: 620px;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .hero-metrics-strip {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }
    .hero-metric-val {
      font-size: 1.75rem;
      font-weight: 800;
      color: #38BDF8;
      line-height: 1.2;
    }
    .hero-metric-label {
      font-size: 0.8125rem;
      color: #94A3B8;
      margin-top: 4px;
    }
    .hero-poster-frame {
      position: relative;
      border-radius: var(--radius-lg);
      padding: 12px;
      background: linear-gradient(145deg, rgba(255,255,255,0.14), rgba(255,255,255,0.02));
      border: 1px solid rgba(255, 255, 255, 0.18);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    }
    .hero-poster-img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .hero-live-badge {
      position: absolute;
      top: 28px;
      right: 28px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      padding: 8px 16px;
      border-radius: 9999px;
      border: 1px solid rgba(56, 189, 248, 0.4);
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #38BDF8;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }

    /* 2. 传统体育数字化痛点透视区 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .pain-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .pain-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: #EF4444;
      opacity: 0.6;
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #FECACA;
    }
    .pain-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: #EF4444;
      margin-bottom: 14px;
    }
    .pain-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 12px;
    }
    .pain-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 3. 平台全景架构与产品介绍区 */
    .arch-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .arch-stack {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .arch-layer {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px 26px;
      display: flex;
      gap: 20px;
      align-items: flex-start;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .arch-layer:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateX(4px);
    }
    .arch-tag {
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.8rem;
      padding: 6px 12px;
      border-radius: 6px;
      white-space: nowrap;
    }
    .arch-info h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 6px;
    }
    .arch-info p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }
    .spec-table-box {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }
    .spec-row {
      display: flex;
      justify-content: space-between;
      padding: 14px 0;
      border-bottom: 1px solid #F1F5F9;
      font-size: 0.92rem;
    }
    .spec-row:last-child {
      border-bottom: none;
    }
    .spec-name {
      color: var(--text-muted);
      font-weight: 500;
    }
    .spec-val {
      color: var(--text-heading);
      font-weight: 700;
      text-align: right;
    }

    /* 4. 核心优势与技术底座区（6卡片网格） */
    .capabilities-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .cap-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      padding: 36px 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .cap-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(15, 82, 186, 0.25);
    }
    .cap-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(15, 82, 186, 0.12), rgba(2, 132, 199, 0.12));
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
      font-size: 1.35rem;
      margin-bottom: 20px;
    }
    .cap-title {
      font-size: 1.18rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 12px;
    }
    .cap-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 5. 热门穿戴终端与硬件矩阵区（3卡片横向） */
    .devices-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .device-card {
      background: var(--bg-surface);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .device-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .device-thumb-wrap {
      height: 230px;
      overflow: hidden;
      background: #F1F5F9;
      position: relative;
    }
    .device-thumb {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .device-card:hover .device-thumb {
      transform: scale(1.05);
    }
    .device-body {
      padding: 30px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .device-model {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 8px;
    }
    .device-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 12px;
    }
    .device-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .device-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      padding-top: 16px;
      border-top: 1px solid var(--border-color);
    }
    .device-tag {
      font-size: 0.775rem;
      background: #F8FAFC;
      color: var(--text-muted);
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid #E2E8F0;
    }

    /* 6. 数字化训练闭环方法与实施步骤区（4-Step） */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .flow-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .flow-card:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
      transform: translateY(-4px);
    }
    .flow-badge {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary);
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.15rem;
      margin-bottom: 20px;
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.28);
    }
    .flow-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 10px;
    }
    .flow-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 7. 深色沉浸式案例与实战赋能理念区 */
    .dark-immersive-section {
      background-color: var(--bg-dark);
      color: #FFF;
      padding: 100px 0;
      position: relative;
      overflow: hidden;
      background-image: radial-gradient(circle at 10% 20%, rgba(15, 82, 186, 0.25) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(0, 168, 150, 0.2) 0%, transparent 40%);
    }
    .dark-inner-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .dark-content .dark-title {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .dark-content p {
      color: #94A3B8;
      font-size: 1.025rem;
      line-height: 1.85;
      margin-bottom: 28px;
    }
    .dark-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 36px;
    }
    .dark-list-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      color: #E2E8F0;
      font-size: 0.95rem;
    }
    .dark-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #38BDF8;
      margin-top: 9px;
      flex-shrink: 0;
    }
    .dark-console-card {
      background: var(--bg-dark-card);
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
    }
    .dark-console-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .dark-console-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #38BDF8;
    }
    .telemetry-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 12px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.9rem;
    }
    .telemetry-name {
      color: #CBD5E1;
    }
    .telemetry-val {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      color: #10B981;
      font-weight: 700;
    }

    /* 8. 多元适用人群与专业场景矩阵区 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .scenario-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
    }
    .scenario-img-box {
      height: 180px;
      overflow: hidden;
    }
    .scenario-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .scenario-content {
      padding: 24px;
      flex-grow: 1;
    }
    .scenario-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 10px;
    }
    .scenario-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 9. 真实用户故事与实战能效突破区 */
    .stories-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .story-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .story-profile {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 20px;
    }
    .story-avatar-box {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: #E2E8F0;
      overflow: hidden;
      flex-shrink: 0;
    }
    .story-name {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-heading);
    }
    .story-org {
      font-size: 0.85rem;
      color: var(--accent);
    }
    .story-quote {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 24px;
      font-style: italic;
    }
    .story-metric-badge {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 16px;
      background: #EFF6FF;
      border-radius: var(--radius-sm);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.875rem;
    }

    /* 10. 平台核心运转数据指标条 */
    .metrics-bar-section {
      background: linear-gradient(135deg, #0F52BA 0%, #0369A1 100%);
      color: #FFF;
      padding: 60px 0;
    }
    .metrics-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .m-stat-val {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.1;
      margin-bottom: 8px;
      letter-spacing: -0.02em;
    }
    .m-stat-unit {
      font-size: 1.25rem;
      font-weight: 600;
      opacity: 0.85;
    }
    .m-stat-label {
      font-size: 0.925rem;
      color: #E0F2FE;
    }

    /* 11. 行业信誉与专业评价区 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .t-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .t-stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 16px;
      letter-spacing: 2px;
    }
    .t-text {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .t-author {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 16px;
      border-top: 1px solid #F1F5F9;
    }
    .t-author-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-heading);
    }
    .t-author-title {
      font-size: 0.825rem;
      color: var(--text-muted);
    }

    /* 12. 前沿动态与体育资讯摘要区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .news-img-box {
      height: 200px;
      overflow: hidden;
    }
    .news-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .news-summary {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 13. 常见问题深度解答区 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 22px 28px;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-heading);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: '+';
      font-size: 1.4rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    details[open] .faq-summary::after {
      transform: rotate(45deg);
    }
    .faq-content {
      padding: 0 28px 24px 28px;
      font-size: 0.935rem;
      color: var(--text-body);
      line-height: 1.8;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }

    /* 14. 商业合作与生态接入转化区 */
    .contact-card-wrapper {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      border-radius: var(--radius-lg);
      padding: 64px 48px;
      color: #FFF;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      box-shadow: var(--shadow-lg);
    }
    .cta-info h3 {
      font-size: 2.1rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 20px;
    }
    .cta-info p {
      color: #94A3B8;
      font-size: 1.025rem;
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .cta-points {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .cta-point-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: #E2E8F0;
    }
    .cta-check-icon {
      color: #10B981;
      font-weight: 900;
    }
    .contact-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 36px;
      color: var(--text-heading);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-heading);
      margin-bottom: 6px;
    }
    .form-input, .form-select {
      width: 100%;
      padding: 11px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.925rem;
      color: var(--text-heading);
      background-color: #F8FAFC;
      transition: var(--transition);
    }
    .form-input:focus, .form-select:focus {
      outline: none;
      border-color: var(--primary);
      background-color: #FFF;
      box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.15);
    }
    .form-btn-submit {
      width: 100%;
      padding: 13px;
      border-radius: var(--radius-sm);
      background-color: var(--primary);
      color: #FFF;
      font-weight: 700;
      border: none;
      cursor: pointer;
      font-size: 1rem;
      transition: var(--transition);
      margin-top: 8px;
    }
    .form-btn-submit:hover {
      background-color: var(--primary-hover);
    }

    /* 页脚系统 */
    .site-footer {
      background-color: #0F172A;
      color: #94A3B8;
      padding: 80px 0 32px 0;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
      gap: 40px;
      margin-bottom: 60px;
    }
    .footer-col-brand h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: #FFF;
      margin-bottom: 16px;
    }
    .footer-col-brand p {
      font-size: 0.9rem;
      line-height: 1.8;
      color: #64748B;
      max-width: 320px;
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 20px;
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-link {
      font-size: 0.9rem;
      color: #94A3B8;
    }
    .footer-link:hover {
      color: #38BDF8;
    }
    .footer-contact-item {
      font-size: 0.885rem;
      line-height: 1.7;
      margin-bottom: 10px;
    }
    .footer-bottom {
      padding-top: 32px;
      border-top: 1px solid #1E293B;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
      color: #64748B;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-wrapper, .dark-inner-grid, .contact-card-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .pain-grid, .capabilities-grid, .flow-grid, .scenarios-grid, .metrics-bar-grid, .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .devices-grid, .testimonials-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 2.3rem;
      }
    }

    @media (max-width: 768px) {
      .top-utility-bar {
        display: none;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        gap: 16px;
      }
      .nav-menu.is-active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .pain-grid, .capabilities-grid, .flow-grid, .scenarios-grid, .metrics-bar-grid, .stories-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .section-spacing {
        padding: 64px 0;
      }
      .hero-section {
        padding: 50px 0 70px 0;
      }
      .hero-h1 {
        font-size: 1.95rem;
      }
      .contact-card-wrapper {
        padding: 36px 20px;
      }
      .contact-form-box {
        padding: 24px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }