/* roulang page: index */
:root {
      --primary: #4E6EF2;
      --primary-dark: #3B5DE7;
      --primary-light: #EEF1FD;
      --green: #00B578;
      --orange: #FF9F0A;
      --red: #FA5151;
      --bg: #F5F6FA;
      --surface: #FFFFFF;
      --dark: #1F2329;
      --text: #1F2329;
      --text-secondary: #86909C;
      --text-weak: #B0B8C1;
      --border: #E8ECF1;
      --radius-lg: 12px;
      --radius-md: 8px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
      --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
      --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
      --font-sans: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
      --transition: 0.2s ease;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

    a {
      text-decoration: none;
      color: inherit;
    }

    button, .btn {
      cursor: pointer;
      border: none;
      outline: none;
      font-family: inherit;
    }

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

    /* 导航 */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      height: 64px;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid transparent;
      transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .header.scrolled {
      background: rgba(255,255,255,0.98);
      box-shadow: 0 1px 4px rgba(0,0,0,0.06);
      border-bottom: 1px solid var(--border);
    }

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

    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 20px;
      color: var(--text);
      letter-spacing: -0.3px;
    }

    .logo-icon {
      width: 32px;
      height: 32px;
      background: var(--primary);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 18px;
      position: relative;
      overflow: hidden;
    }

    .logo-icon::after {
      content: "⚽";
      font-size: 18px;
      display: block;
      transform: rotate(-15deg);
    }

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

    .nav-links a {
      font-size: 16px;
      font-weight: 500;
      color: var(--text);
      position: relative;
      padding: 4px 0;
      transition: color var(--transition);
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width var(--transition);
    }

    .nav-links a:hover {
      color: var(--primary);
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .btn-primary {
      background: var(--primary);
      color: white;
      padding: 10px 24px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 15px;
      transition: background var(--transition), box-shadow var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(78,110,242,0.25);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      box-shadow: 0 6px 16px rgba(78,110,242,0.35);
    }

    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--primary);
      color: var(--primary);
      padding: 10px 24px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 15px;
      transition: all var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .btn-outline:hover {
      background: rgba(78,110,242,0.08);
    }

    .btn-ghost {
      background: transparent;
      border: 1.5px solid white;
      color: white;
      padding: 12px 28px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 15px;
      transition: all var(--transition);
    }

    .btn-ghost:hover {
      background: rgba(255,255,255,0.12);
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      border: none;
      padding: 4px;
      cursor: pointer;
    }

    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--text);
      border-radius: 2px;
      transition: all var(--transition);
    }

    .mobile-menu {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      width: 100%;
      background: white;
      padding: 24px;
      flex-direction: column;
      gap: 20px;
      box-shadow: var(--shadow-md);
      z-index: 999;
    }

    .mobile-menu a {
      font-size: 18px;
      font-weight: 500;
    }

    /* Hero */
    .hero {
      padding: 120px 0 80px;
      background: radial-gradient(circle at 80% 20%, rgba(78,110,242,0.04) 0%, transparent 60%);
    }

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

    .hero-content h1 {
      font-size: 36px;
      font-weight: 700;
      line-height: 1.3;
      letter-spacing: -0.5px;
      color: var(--text);
      margin-bottom: 16px;
    }

    .hero-content .subtitle {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 32px;
      line-height: 1.6;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 24px;
    }

    .trust-signals {
      display: flex;
      gap: 24px;
      font-size: 14px;
      color: var(--text-secondary);
      margin-top: 12px;
    }

    .trust-signals span {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .hero-image {
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: var(--radius-lg);
      min-height: 400px;
      box-shadow: var(--shadow-lg);
      animation: float 4s ease-in-out infinite;
      position: relative;
    }

    @keyframes float {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-6px); }
    }

    /* 板块标题 */
    .section-title {
      font-size: 28px;
      font-weight: 700;
      line-height: 1.4;
      color: var(--text);
      margin-bottom: 16px;
      text-align: center;
    }

    .section-sub {
      font-size: 16px;
      color: var(--text-secondary);
      text-align: center;
      max-width: 700px;
      margin: 0 auto 48px;
    }

    section {
      padding: 80px 0;
    }

    /* 亮点网格 */
    .highlights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .highlight-card {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .highlight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .icon-box {
      width: 56px;
      height: 56px;
      background: var(--primary-light);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      color: var(--primary);
      font-size: 28px;
    }

    .highlight-card h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .highlight-card p {
      font-size: 14px;
      color: var(--text-secondary);
    }

    /* 场景矩阵 */
    .scene-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      margin-bottom: 80px;
    }

    .scene-row.reverse {
      direction: rtl;
    }

    .scene-row.reverse .scene-text {
      direction: ltr;
    }

    .scene-text h3 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .scene-text p {
      color: var(--text-secondary);
      margin-bottom: 20px;
      font-size: 16px;
    }

    .feature-list {
      list-style: none;
      padding: 0;
    }

    .feature-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      font-weight: 500;
    }

    .feature-list li::before {
      content: "●";
      color: var(--green);
      font-size: 18px;
    }

    .scene-img {
      background-size: cover;
      background-position: center;
      border-radius: var(--radius-lg);
      min-height: 320px;
      box-shadow: var(--shadow-sm);
    }

    /* 数据带 */
    .trust-strip {
      background: var(--dark);
      padding: 56px 0;
    }

    .stats {
      display: flex;
      justify-content: space-around;
      text-align: center;
      flex-wrap: wrap;
    }

    .stat-item .number {
      font-size: 36px;
      font-weight: 700;
      color: white;
    }

    .stat-item .label {
      font-size: 14px;
      color: var(--text-secondary);
      margin-top: 8px;
    }

    /* 方案对比 */
    .plans-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: start;
    }

    .plan-card {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
      transition: all 0.2s;
    }

    .plan-card.recommended {
      border: 2px solid var(--primary);
      transform: scale(1.02);
      box-shadow: var(--shadow-md);
    }

    .badge {
      background: var(--green);
      color: white;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 20px;
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
    }

    .plan-name {
      font-size: 20px;
      font-weight: 700;
      margin: 8px 0;
    }

    .plan-price {
      font-size: 28px;
      font-weight: 700;
      color: var(--primary);
      margin: 16px 0;
    }

    .plan-features {
      list-style: none;
      text-align: left;
      margin: 24px 0;
    }

    .plan-features li {
      padding: 8px 0;
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 15px;
    }

    .check {
      color: var(--green);
      font-weight: bold;
    }

    /* FAQ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--surface);
      border-radius: var(--radius-md);
      padding: 16px 20px;
      margin-bottom: 8px;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      cursor: pointer;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-in-out;
      font-size: 15px;
      color: var(--text-secondary);
    }

    .faq-item.open .faq-answer {
      max-height: 200px;
      padding-top: 12px;
    }

    /* CTA */
    .cta-block {
      background: var(--dark);
      padding: 80px 0;
      text-align: center;
      color: white;
    }

    .cta-block h2 {
      font-size: 32px;
      font-weight: 700;
      margin-bottom: 16px;
      color: white;
    }

    .cta-block .btn-primary {
      font-size: 18px;
      padding: 16px 40px;
    }

    /* 页脚 */
    .footer {
      background: var(--dark);
      padding: 48px 0 24px;
      color: var(--text-secondary);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
    }

    .footer-col h4 {
      color: white;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .footer-col a {
      display: block;
      color: var(--text-secondary);
      margin-bottom: 10px;
      font-size: 14px;
      transition: color var(--transition);
    }

    .footer-col a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      margin-top: 32px;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 14px;
    }

    .social-icons {
      display: flex;
      gap: 20px;
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .hero-grid, .scene-row {
        grid-template-columns: 1fr;
      }
      .highlights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .plans-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .hamburger {
        display: flex;
      }
      .highlights-grid {
        grid-template-columns: 1fr;
      }
      .hero {
        padding: 100px 0 60px;
      }
      .stats {
        gap: 24px;
      }
    }