/* roulang page: index */
* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --primary: #1B3A2D;
      --primary-deep: #153026;
      --accent: #E8C547;
      --bg-warm: #F5F3EE;
      --bg-dark: #0F1A14;
      --text-main: #1E1E1E;
      --text-secondary: #5C5C5C;
      --border-soft: #D9D4CC;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 6px;
      --shadow-card: 0 2px 12px rgba(15, 26, 20, 0.06);
      --shadow-hover: 0 8px 24px rgba(15, 26, 20, 0.10);
      --font-title: 'Noto Sans SC', sans-serif;
      --font-body: 'Inter', 'Noto Sans SC', sans-serif;
      --font-mono: 'JetBrains Mono', monospace;
      --max-width: 1280px;
      --header-height: 64px;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--bg-warm);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 滚动行为 */
    html {
      scroll-behavior: smooth;
    }

    /* 基础样式 */
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

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

    button, .btn {
      cursor: pointer;
      font-family: var(--font-body);
      border: none;
      outline: none;
      transition: all 0.2s ease;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-title);
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.3;
    }

    h1 {
      font-size: 3.2rem;
      color: #1E1E1E;
    }

    h2 {
      font-size: 2rem;
      margin-bottom: 1rem;
    }

    h3 {
      font-size: 1.25rem;
      color: #1E1E1E;
    }

    h4 {
      font-size: 1rem;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 1.2rem;
    }

    /* 导航 desktop */
    .header {
      position: sticky;
      top: 0;
      width: 100%;
      height: var(--header-height);
      background: rgba(251, 249, 245, 0.96);
      backdrop-filter: blur(12px);
      box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
      z-index: 50;
      display: flex;
      align-items: center;
    }

    .header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }

    .logo {
      font-family: var(--font-title);
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.02em;
      white-space: nowrap;
    }

    .nav-desktop {
      display: flex;
      align-items: center;
      gap: 2rem;
    }

    .nav-link {
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--text-main);
      position: relative;
      padding: 0.4rem 0;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -2px;
      width: 0%;
      height: 2px;
      background: var(--primary);
      transition: width 0.2s ease;
    }

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

    .btn-nav {
      background: var(--primary);
      color: white;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 0.9rem;
      margin-left: 0.8rem;
    }

    .btn-nav:hover {
      background: var(--primary-deep);
      transform: scale(1.03);
    }

    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
    }

    /* 板块通用 */
    section {
      padding: 80px 0;
    }

    .section-title {
      text-align: left;
      margin-bottom: 3rem;
    }

    .btn-primary {
      background: var(--primary);
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      display: inline-block;
      text-align: center;
    }

    .btn-primary:hover {
      background: var(--primary-deep);
      transform: scale(1.03);
    }

    .btn-secondary {
      background: transparent;
      border: 1.5px solid var(--primary);
      color: var(--primary);
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      display: inline-block;
    }

    .btn-secondary:hover {
      background: var(--primary);
      color: white;
    }

    .btn-accent {
      background: var(--accent);
      color: #1E1E1E;
      padding: 16px 40px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      font-size: 1.1rem;
      position: relative;
      transition: 0.2s;
    }

    .btn-accent:hover {
      box-shadow: 0 0 0 8px rgba(232, 197, 71, 0.3);
    }

    /* Hero 双栏 */
    .hero-grid {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: 2.5rem;
      align-items: center;
    }

    .hero-left {
      display: flex;
      flex-direction: column;
      gap: 1.8rem;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-secondary);
      max-width: 90%;
    }

    .hero-buttons {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }

    .trust-label {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      color: var(--text-secondary);
      margin-top: 0.5rem;
    }

    .hero-right {
      position: relative;
      border-radius: var(--radius-card);
      overflow: hidden;
      background: #1e2b24;
    }

    .hero-right img {
      width: 100%;
      height: auto;
      filter: saturate(0.7) brightness(0.9);
      object-fit: cover;
    }

    .score-fragments {
      position: absolute;
      inset: 0;
      pointer-events: none;
      opacity: 0.15;
      font-family: var(--font-mono);
      font-size: 3.5rem;
      color: white;
      display: flex;
      flex-wrap: wrap;
      align-content: center;
      justify-content: center;
      gap: 2rem;
      transform: rotate(-4deg);
    }

    /* 服务卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .service-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 28px 24px;
      box-shadow: var(--shadow-card);
      transition: all 0.4s ease-out;
      display: flex;
      flex-direction: column;
      gap: 16px;
      border: 1px solid rgba(0,0,0,0.02);
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }

    .service-icon {
      font-size: 2rem;
      color: var(--primary);
    }

    .service-desc {
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.6;
    }

    .service-link {
      margin-top: auto;
      font-weight: 600;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .service-link i {
      transition: transform 0.2s;
    }

    .service-link:hover i {
      transform: translateX(4px);
    }

    /* 不规则高度模拟 */
    .service-card.tall {
      padding-bottom: 4rem;
    }
    .service-card.short {
      padding-bottom: 1.2rem;
    }

    /* 赛事数据深色区 */
    .stats-section {
      background: var(--bg-dark);
      position: relative;
      overflow: hidden;
    }
    .stats-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: repeating-linear-gradient(0deg, rgba(255,255,255,0.01) 0px, rgba(255,255,255,0.01) 1px, transparent 1px, transparent 20px), repeating-linear-gradient(90deg, rgba(255,255,255,0.01) 0px, transparent 1px, transparent 20px);
      opacity: 0.2;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      text-align: center;
      position: relative;
      z-index: 2;
    }
    .stat-item {
      color: white;
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 3rem;
      font-weight: 700;
      color: var(--accent);
      text-shadow: 0 0 12px rgba(232,197,71,0.3);
    }
    .stat-label {
      font-size: 1.1rem;
      font-weight: 500;
      margin-top: 0.5rem;
    }
    .stat-trend {
      color: #b0b8b2;
      font-size: 0.85rem;
      margin-top: 0.25rem;
    }

    /* 方案对比表 */
    .plan-table-wrapper {
      background: white;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }
    .plan-table {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      width: 100%;
    }
    .plan-cell {
      padding: 20px 16px;
      border-bottom: 1px solid var(--border-soft);
      display: flex;
      align-items: center;
      font-size: 0.95rem;
    }
    .plan-header {
      font-weight: 700;
      background: #faf9f7;
      font-size: 1.1rem;
    }
    .plan-recommend {
      background: #E8F0EC;
      border-left: 3px solid var(--primary);
    }
    .plan-recommend .plan-header {
      background: #dce9e3;
    }
    .btn-select {
      background: var(--primary);
      color: white;
      padding: 10px 18px;
      border-radius: 6px;
      font-weight: 600;
      width: 100%;
      text-align: center;
    }
    .btn-outline-select {
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
      padding: 10px 18px;
      border-radius: 6px;
      font-weight: 600;
    }

    /* FAQ */
    .faq-list {
      max-width: 800px;
    }
    .faq-item {
      border-bottom: 1px solid var(--border-soft);
    }
    .faq-question {
      width: 100%;
      background: transparent;
      text-align: left;
      padding: 18px 0;
      font-size: 1.1rem;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--text-main);
    }
    .faq-icon {
      transition: transform 0.3s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.2s;
      color: var(--text-secondary);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 18px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* CTA 横幅 */
    .cta-banner {
      background: var(--bg-dark);
      text-align: center;
      padding: 80px 0;
    }
    .cta-banner h2 {
      color: white;
    }
    .cta-sub {
      color: #cbd5ce;
      margin: 16px 0 28px;
    }

    /* 页脚 */
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 2rem;
      padding: 60px 0;
    }
    .footer-desc {
      color: #b0b5b1;
      margin-top: 12px;
      font-size: 0.9rem;
    }
    .footer-links li {
      list-style: none;
      margin-bottom: 8px;
    }
    .footer-links a {
      color: #d5d8d4;
      font-size: 0.9rem;
    }
    .copyright {
      border-top: 1px solid #2a3a30;
      padding: 20px 0;
      text-align: center;
      color: #88908a;
      font-size: 0.8rem;
    }
    footer {
      background: #0c1811;
      color: white;
    }

    @media (max-width: 1024px) {
      h1 { font-size: 2.5rem; }
      .hero-grid { grid-template-columns: 1fr; gap: 2rem; }
      .services-grid { grid-template-columns: repeat(2,1fr); }
      .plan-table { grid-template-columns: 2fr 1fr 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .header { display: none; }
      .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 12px;
        left: 1rem;
        right: 1rem;
        background: rgba(28, 35, 30, 0.92);
        backdrop-filter: blur(16px);
        border-radius: 40px;
        padding: 10px 16px;
        justify-content: space-around;
        z-index: 99;
        box-shadow: 0 8px 20px rgba(0,0,0,0.25);
      }
      .mobile-nav-item {
        color: #ccc;
        display: flex;
        flex-direction: column;
        align-items: center;
        font-size: 0.7rem;
        font-weight: 500;
        gap: 4px;
      }
      .mobile-nav-item i { font-size: 1.2rem; }
      .mobile-nav-item.active { color: var(--accent); }
      .hero-left { text-align: left; }
      .services-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: 1fr; gap: 2rem; }
      .plan-table {
        grid-template-columns: 1fr 1fr 1fr;
      }
      .plan-cell:first-child { display: none; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 520px) {
      .hero-buttons { flex-direction: column; }
    }