/* roulang page: index */
:root {
      --bg-main: #0b0e14;
      --bg-surface: #111622;
      --bg-card: #161d2d;
      --bg-alt: #0a1813;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-accent: rgba(16, 185, 129, 0.3);
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --accent-green: #10b981;
      --accent-green-glow: #00f59b;
      --accent-orange: #f59e0b;
      --accent-blue: #38bdf8;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.45);
      --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.2);
      --font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: var(--font-family);
    }

    body {
      line-height: 1.7;
      overflow-x: hidden;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

    ul, ol {
      list-style: none;
    }

    button, input, select {
      font-family: inherit;
      outline: none;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 14, 20, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-subtle);
      height: 72px;
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 19px;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-main);
    }

    .brand-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, #10b981 0%, #064e3b 100%);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-size: 18px;
      box-shadow: 0 0 12px rgba(16, 185, 129, 0.4);
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav-item {
      position: relative;
    }

    .nav-link {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 24px 0;
      display: flex;
      align-items: center;
      gap: 6px;
    }

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

    .nav-link i.fa-angle-down {
      font-size: 11px;
      transition: transform 0.2s;
    }

    /* 下拉面板 */
    .dropdown-panel {
      position: absolute;
      top: 100%;
      left: 50%;
      transform: translateX(-50%) translateY(10px);
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 20px;
      min-width: 440px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      box-shadow: 0 12px 36px rgba(0, 0, 0, 0.6);
      opacity: 0;
      visibility: hidden;
      transition: all 0.2s ease;
      pointer-events: none;
    }

    .nav-item:hover .dropdown-panel {
      opacity: 1;
      visibility: visible;
      transform: translateX(-50%) translateY(0);
      pointer-events: auto;
    }

    .nav-item:hover .nav-link i.fa-angle-down {
      transform: rotate(180deg);
    }

    .dropdown-col h4 {
      font-size: 12px;
      color: var(--text-dim);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 12px;
      padding-bottom: 6px;
      border-bottom: 1px solid var(--border-subtle);
    }

    .dropdown-col a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 8px 10px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: var(--text-muted);
    }

    .dropdown-col a:hover {
      background: var(--bg-card);
      color: var(--accent-green-glow);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s ease;
      border: 1px solid transparent;
    }

    .btn-primary {
      background: var(--accent-green);
      color: #0b0e14;
      box-shadow: 0 2px 12px rgba(16, 185, 129, 0.3);
    }

    .btn-primary:hover {
      background: var(--accent-green-glow);
      transform: translateY(-2px);
      box-shadow: 0 4px 20px rgba(16, 185, 129, 0.5);
    }

    .btn-outline {
      border-color: var(--border-subtle);
      background: rgba(255, 255, 255, 0.03);
      color: var(--text-main);
    }

    .btn-outline:hover {
      border-color: var(--accent-green);
      background: rgba(16, 185, 129, 0.08);
      color: var(--accent-green);
    }

    /* 脉冲红绿点 */
    .status-pulse {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-green);
      position: relative;
    }

    .status-pulse::after {
      content: '';
      position: absolute;
      top: -3px;
      left: -3px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--accent-green);
      opacity: 0.6;
      animation: pulseAnim 1.6s infinite;
    }

    @keyframes pulseAnim {
      0% { transform: scale(0.6); opacity: 0.8; }
      100% { transform: scale(1.8); opacity: 0; }
    }

    /* 统一 Section 排版 */
    section {
      padding: 96px 0;
      position: relative;
    }

    .section-header {
      margin-bottom: 56px;
      max-width: 760px;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 700;
      color: var(--accent-green);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      background: rgba(16, 185, 129, 0.1);
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
      border: 1px solid rgba(16, 185, 129, 0.2);
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 1. Hero 板块（裂变邀请首屏） */
    .hero-section {
      padding: 80px 0 100px;
      background: radial-gradient(circle at 50% -20%, #133324 0%, #0b0e14 70%);
      border-bottom: 1px solid var(--border-subtle);
      position: relative;
    }

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

    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -0.03em;
      margin-bottom: 20px;
    }

    .hero-content h1 span {
      color: var(--accent-green);
    }

    .hero-intro {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.8;
    }

    .hero-search-bar {
      display: flex;
      background: var(--bg-surface);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      padding: 6px;
      margin-bottom: 24px;
      box-shadow: 0 8px 30px rgba(0,0,0,0.5);
    }

    .hero-search-bar input {
      flex: 1;
      background: transparent;
      border: none;
      padding: 12px 16px;
      color: #fff;
      font-size: 14px;
    }

    .hero-search-bar input::placeholder {
      color: var(--text-dim);
    }

    .hero-stats-row {
      display: flex;
      gap: 24px;
      padding-top: 16px;
      border-top: 1px solid var(--border-subtle);
    }

    .hero-stat-item {
      display: flex;
      flex-direction: column;
    }

    .hero-stat-item .val {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
    }

    .hero-stat-item .lbl {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 邀请裂变卡片 */
    .referral-card {
      background: var(--bg-card);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-glow);
      position: relative;
    }

    .referral-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent-orange);
      color: #0b0e14;
      font-weight: 700;
      font-size: 11px;
      padding: 3px 10px;
      border-radius: 20px;
      text-transform: uppercase;
    }

    .referral-card h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .referral-card p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .progress-wrap {
      margin-bottom: 24px;
    }

    .progress-labels {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      margin-bottom: 6px;
    }

    .progress-bar-bg {
      height: 8px;
      background: rgba(255, 255, 255, 0.08);
      border-radius: 4px;
      overflow: hidden;
    }

    .progress-bar-fill {
      height: 100%;
      width: 75%;
      background: linear-gradient(90deg, #10b981, #00f59b);
      border-radius: 4px;
    }

    .rewards-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 24px;
    }

    .reward-box {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 12px;
      font-size: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .reward-box i {
      color: var(--accent-green);
      font-size: 16px;
    }

    /* 2. 痛点剖析区 */
    .pain-section {
      background: var(--bg-main);
      border-bottom: 1px solid var(--border-subtle);
    }

    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .pain-card {
      background: var(--bg-surface);
      border: 1px solid rgba(239, 68, 68, 0.2);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      position: relative;
    }

    .pain-index {
      font-size: 28px;
      font-weight: 800;
      color: rgba(239, 68, 68, 0.3);
      line-height: 1;
      margin-bottom: 16px;
    }

    .pain-card h4 {
      font-size: 18px;
      font-weight: 700;
      color: #fca5a5;
      margin-bottom: 12px;
    }

    .pain-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 3. 全维度解决方案矩阵 */
    .solution-section {
      background: var(--bg-alt);
      border-bottom: 1px solid var(--border-subtle);
    }

    .solution-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .solution-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 36px;
      display: flex;
      gap: 20px;
      transition: border-color 0.2s, transform 0.2s;
    }

    .solution-card:hover {
      border-color: var(--accent-green);
      transform: translateY(-2px);
    }

    .solution-icon-wrap {
      width: 52px;
      height: 52px;
      background: rgba(16, 185, 129, 0.1);
      border: 1px solid rgba(16, 185, 129, 0.25);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-green);
      font-size: 22px;
      flex-shrink: 0;
    }

    .solution-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

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

    /* 4. 场景演示与多端体验 */
    .demo-section {
      background: var(--bg-main);
      border-bottom: 1px solid var(--border-subtle);
    }

    .demo-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .device-mockup-board {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-soft);
    }

    .mockup-match-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-subtle);
      padding-bottom: 14px;
      margin-bottom: 16px;
    }

    .match-tag {
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 4px;
      background: rgba(245, 158, 11, 0.15);
      color: var(--accent-orange);
      font-weight: 600;
    }

    .mockup-scoreboard {
      display: flex;
      align-items: center;
      justify-content: space-around;
      padding: 24px 0;
      background: #080b10;
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
    }

    .team-box {
      text-align: center;
    }

    .team-box .name {
      font-size: 16px;
      font-weight: 700;
      margin-top: 6px;
    }

    .score-display {
      font-size: 32px;
      font-weight: 900;
      letter-spacing: 0.1em;
      color: var(--accent-green-glow);
    }

    .stream-route-select {
      display: flex;
      gap: 8px;
    }

    .route-btn {
      flex: 1;
      padding: 8px 12px;
      border-radius: 4px;
      border: 1px solid var(--border-subtle);
      background: var(--bg-card);
      color: var(--text-muted);
      font-size: 12px;
      text-align: center;
      cursor: pointer;
    }

    .route-btn.active {
      border-color: var(--accent-green);
      color: var(--accent-green-glow);
      background: rgba(16, 185, 129, 0.1);
    }

    .feature-points-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .feature-point-item {
      display: flex;
      gap: 16px;
    }

    .feature-point-item i {
      color: var(--accent-green);
      font-size: 18px;
      margin-top: 4px;
    }

    .feature-point-item h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .feature-point-item p {
      font-size: 13.5px;
      color: var(--text-muted);
    }

    /* 5. 热门赛事与信号矩阵 */
    .matches-section {
      background: var(--bg-surface);
      border-bottom: 1px solid var(--border-subtle);
    }

    .match-table-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
    }

    .match-row {
      display: grid;
      grid-template-columns: 140px 1.5fr 120px 200px;
      align-items: center;
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-subtle);
      transition: background 0.15s;
    }

    .match-row:last-child {
      border-bottom: none;
    }

    .match-row:hover {
      background: rgba(255, 255, 255, 0.02);
    }

    .league-badge {
      font-size: 12px;
      font-weight: 700;
      color: var(--accent-blue);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .teams-vs {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 15px;
      font-weight: 700;
    }

    .teams-vs .vs {
      font-size: 11px;
      color: var(--text-dim);
      font-weight: normal;
    }

    .match-time {
      font-size: 13px;
      color: var(--text-muted);
    }

    .match-actions {
      display: flex;
      justify-content: flex-end;
      gap: 8px;
    }

    /* 6. 三步连接法 */
    .steps-section {
      background: var(--bg-main);
      border-bottom: 1px solid var(--border-subtle);
    }

    .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      position: relative;
    }

    .step-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      position: relative;
    }

    .step-num {
      font-size: 36px;
      font-weight: 900;
      color: rgba(16, 185, 129, 0.25);
      margin-bottom: 16px;
      line-height: 1;
    }

    .step-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .step-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 7. 性能监控数据大屏 */
    .kpi-section {
      background: var(--bg-alt);
      border-bottom: 1px solid var(--border-subtle);
    }

    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .kpi-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
    }

    .kpi-num {
      font-size: 38px;
      font-weight: 800;
      color: var(--accent-green-glow);
      margin-bottom: 6px;
      font-family: var(--font-family);
    }

    .kpi-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .kpi-desc {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 8. 社会认同与球迷证言 */
    .testimonials-section {
      background: var(--bg-main);
      border-bottom: 1px solid var(--border-subtle);
    }

    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testi-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testi-stars {
      color: var(--accent-orange);
      font-size: 12px;
      margin-bottom: 16px;
      letter-spacing: 2px;
    }

    .testi-content {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-subtle);
      padding-top: 16px;
    }

    .author-avatar {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: #1e293b;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-green);
      font-weight: 700;
      font-size: 14px;
    }

    .author-info h4 {
      font-size: 13px;
      font-weight: 600;
    }

    .author-info span {
      font-size: 11px;
      color: var(--text-dim);
    }

    /* 9. 球迷画像与适用群体 */
    .audiences-section {
      background: var(--bg-surface);
      border-bottom: 1px solid var(--border-subtle);
    }

    .audiences-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .audience-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .audience-tag {
      font-size: 11px;
      color: var(--accent-green);
      background: rgba(16, 185, 129, 0.1);
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
    }

    .audience-card h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .audience-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 10. 资讯情报与战术前瞻 */
    .news-section {
      background: var(--bg-main);
      border-bottom: 1px solid var(--border-subtle);
    }

    .news-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 28px;
    }

    .featured-news-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .featured-news-card .news-meta {
      display: flex;
      gap: 12px;
      font-size: 12px;
      color: var(--text-dim);
      margin-bottom: 14px;
    }

    .featured-news-card h3 {
      font-size: 22px;
      font-weight: 800;
      line-height: 1.4;
      margin-bottom: 16px;
    }

    .featured-news-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .news-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .news-list-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 18px 20px;
      display: flex;
      flex-direction: column;
      gap: 6px;
      transition: border-color 0.2s;
    }

    .news-list-item:hover {
      border-color: var(--accent-green);
    }

    .news-list-item .date {
      font-size: 11px;
      color: var(--text-dim);
    }

    .news-list-item h4 {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    /* 11. 传输与画质指标对照表 (套餐对比变体) */
    .compare-section {
      background: var(--bg-alt);
      border-bottom: 1px solid var(--border-subtle);
    }

    .compare-table-wrap {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow-x: auto;
    }

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

    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-subtle);
      font-size: 14px;
    }

    .compare-table th {
      background: rgba(255, 255, 255, 0.02);
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table td.hl-col {
      color: var(--accent-green-glow);
      font-weight: 700;
      background: rgba(16, 185, 129, 0.04);
    }

    /* 12. 保障条 (Trust Banner) */
    .guarantee-section {
      padding: 48px 0;
      background: #06090e;
      border-bottom: 1px solid var(--border-subtle);
    }

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

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

    .guarantee-item i {
      font-size: 24px;
      color: var(--accent-green);
    }

    .guarantee-item .txt h4 {
      font-size: 14px;
      font-weight: 700;
    }

    .guarantee-item .txt p {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 13. 转化表单与收口区 */
    .cta-form-section {
      background: radial-gradient(circle at center, #11281e 0%, #0b0e14 70%);
      padding: 100px 0;
    }

    .cta-box {
      max-width: 680px;
      margin: 0 auto;
      text-align: center;
      background: var(--bg-surface);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 48px 36px;
      box-shadow: var(--shadow-glow);
    }

    .cta-box h2 {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .cta-box p {
      font-size: 14.5px;
      color: var(--text-muted);
      margin-bottom: 28px;
      line-height: 1.7;
    }

    .cta-form {
      display: flex;
      gap: 12px;
      margin-bottom: 16px;
    }

    .cta-form input {
      flex: 1;
      background: #0b0e14;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 14px 18px;
      color: #fff;
      font-size: 14px;
    }

    .cta-form input:focus {
      border-color: var(--accent-green);
    }

    .cta-footnote {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 页脚 */
    .site-footer {
      background: #07090d;
      border-top: 1px solid var(--border-subtle);
      padding: 64px 0 32px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand p {
      font-size: 13.5px;
      color: var(--text-dim);
      margin-top: 16px;
      line-height: 1.7;
    }

    .footer-col h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
    }

    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col a {
      font-size: 13px;
      color: var(--text-muted);
    }

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

    .footer-bottom {
      border-top: 1px solid var(--border-subtle);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .demo-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .pain-grid, .steps-grid, .testimonials-grid {
        grid-template-columns: 1fr 1fr;
      }
      .audiences-grid, .kpi-grid, .guarantee-grid {
        grid-template-columns: 1fr 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-menu, .nav-actions {
        display: none;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 24px;
      }
      .solution-grid, .pain-grid, .steps-grid, .testimonials-grid, .audiences-grid, .kpi-grid, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .cta-form {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .match-row {
        grid-template-columns: 1fr;
        gap: 10px;
      }
      .match-actions {
        justify-content: flex-start;
      }
    }