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

    :root {
      --primary: #8B00FF;      /* 霓虹紫罗兰 */
      --accent: #00E5FF;       /* 电光青 */
      --deep-bg: #0A0E17;      /* 深空黑 */
      --card-bg: rgba(255, 255, 255, 0.04);
      --border-light: rgba(0, 229, 255, 0.2);
      --cta-orange: #FF4D00;
      --cta-orange-light: #FF7A00;
      --text-primary: #E0DCE4;
      --text-secondary: #9B97A0;
      --radius-card: 24px;
      --radius-btn: 12px;
      --shadow-card: 0 8px 32px rgba(0,229,255,0.08);
      --shadow-hover: 0 16px 48px rgba(139,0,255,0.15);
      --transition: all 0.3s ease;
    }

    body {
      font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background-color: var(--deep-bg);
      color: var(--text-primary);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航 */
    .main-nav {
      position: fixed;
      top: 0;
      width: 100%;
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 32px;
      z-index: 100;
      background: rgba(10, 14, 23, 0);
      backdrop-filter: blur(12px);
      transition: background 0.3s, box-shadow 0.3s;
      border-bottom: 1px solid transparent;
    }
    .main-nav.scrolled {
      background: rgba(10, 14, 23, 0.9);
      border-bottom: 1px solid rgba(0,229,255,0.2);
      box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    }
    .logo {
      font-size: 28px;
      font-weight: 800;
      color: white;
      text-decoration: none;
      letter-spacing: 1px;
      display: flex;
      align-items: baseline;
      gap: 2px;
    }
    .logo-decoration {
      width: 32px;
      height: 3px;
      background: var(--accent);
      display: inline-block;
      margin-left: 4px;
      border-radius: 4px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-links a {
      color: var(--text-primary);
      text-decoration: none;
      font-weight: 500;
      font-size: 16px;
      position: relative;
      transition: color 0.2s;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: width 0.25s ease;
    }
    .nav-links a:hover {
      color: var(--accent);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-cta-btn {
      background: transparent;
      border: 1.5px solid var(--accent);
      color: var(--accent);
      padding: 8px 22px;
      border-radius: 30px;
      font-weight: 600;
      transition: var(--transition);
      cursor: pointer;
      text-decoration: none;
    }
    .nav-cta-btn:hover {
      background: rgba(0,229,255,0.1);
    }

    .mobile-bottom-nav {
      display: none;
    }

    /* Hero */
    .hero {
      display: flex;
      align-items: center;
      min-height: 100vh;
      padding: 120px 0 60px;
      background: radial-gradient(circle at 70% 20%, rgba(139,0,255,0.15) 0%, #0A0E17 60%);
      position: relative;
      overflow: hidden;
    }
    .hero-left {
      flex: 1 1 50%;
      padding-right: 40px;
    }
    .hero-title {
      font-size: 56px;
      font-weight: 800;
      line-height: 1.2;
      background: linear-gradient(to right, var(--primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-sub {
      font-size: 20px;
      color: var(--text-secondary);
      margin-bottom: 32px;
      max-width: 520px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--cta-orange), var(--cta-orange-light));
      color: white;
      padding: 14px 34px;
      border-radius: 12px;
      border: none;
      font-weight: 700;
      font-size: 16px;
      cursor: pointer;
      box-shadow: 0 4px 18px rgba(255,77,0,0.45);
      transition: var(--transition);
      text-decoration: none;
    }
    .btn-primary:hover {
      transform: scale(1.05);
      box-shadow: 0 8px 28px rgba(255,77,0,0.7);
    }
    .btn-secondary {
      background: transparent;
      border: 1.5px solid var(--accent);
      color: var(--accent);
      padding: 14px 34px;
      border-radius: 12px;
      font-weight: 600;
      transition: var(--transition);
      cursor: pointer;
      text-decoration: none;
    }
    .btn-secondary:hover {
      background: rgba(0,229,255,0.1);
    }
    .hero-right {
      flex: 1 1 45%;
      display: flex;
      flex-direction: column;
      gap: 24px;
      position: relative;
    }
    .data-badge {
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(0,229,255,0.25);
      border-radius: 20px;
      padding: 20px 28px;
      display: flex;
      align-items: center;
      gap: 20px;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s;
      animation: floatBadge 4s ease-in-out infinite;
    }
    .data-badge:nth-child(2) { animation-delay: 0.8s; }
    .data-badge:nth-child(3) { animation-delay: 1.6s; }
    @keyframes floatBadge {
      0% { transform: translateY(0); }
      50% { transform: translateY(-6px); }
      100% { transform: translateY(0); }
    }
    .badge-number {
      font-size: 34px;
      font-weight: 800;
      color: var(--accent);
      font-family: 'Inter', system-ui, sans-serif;
    }
    .badge-desc {
      color: #ccccdd;
      font-size: 16px;
    }

    section {
      padding: 90px 0;
    }
    .section-title {
      font-size: 36px;
      font-weight: 700;
      margin-bottom: 16px;
      color: white;
    }
    .section-sub {
      color: var(--text-secondary);
      margin-bottom: 48px;
      font-size: 18px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: rgba(255,255,255,0.03);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 36px 28px;
      transition: var(--transition);
      box-shadow: var(--shadow-card);
    }
    .feature-card:hover {
      transform: translateY(-8px);
      border-color: var(--accent);
      box-shadow: var(--shadow-hover);
    }
    .icon-placeholder {
      font-size: 38px;
      margin-bottom: 25px;
      color: var(--accent);
    }
    .card-title {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .card-desc {
      color: var(--text-secondary);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .metric-badge {
      color: var(--cta-orange-light);
      font-weight: 800;
      font-size: 28px;
      font-family: 'Inter', sans-serif;
    }

    .h-scroll-wrapper {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding: 16px 0 24px;
      scrollbar-width: thin;
      scrollbar-color: var(--accent) transparent;
      position: relative;
    }
    .h-scroll-wrapper::-webkit-scrollbar { height: 5px; }
    .h-scroll-wrapper::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 10px; }
    .match-card {
      min-width: 260px;
      background: var(--card-bg);
      backdrop-filter: blur(10px);
      border-radius: 24px;
      padding: 24px;
      border: 1px solid rgba(0,229,255,0.15);
      transition: var(--transition);
    }
    .match-card:hover { transform: translateY(-5px); border-color: var(--accent); }
    .score {
      font-size: 38px;
      font-weight: 800;
      color: var(--accent);
    }
    .plan-table {
      display: flex;
      gap: 20px;
      align-items: stretch;
      flex-wrap: wrap;
    }
    .plan {
      flex: 1 1 200px;
      background: rgba(255,255,255,0.02);
      backdrop-filter: blur(12px);
      border-radius: 28px;
      padding: 32px 20px;
      border: 1px solid transparent;
      transition: var(--transition);
    }
    .plan.featured {
      border-color: var(--primary);
      background: rgba(139,0,255,0.08);
      transform: scale(1.02);
    }
    .faq-item {
      border-bottom: 1px solid rgba(0,229,255,0.12);
      padding: 20px 0;
    }
    .faq-question {
      font-weight: 700;
      font-size: 20px;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.5s ease;
      color: var(--text-secondary);
    }
    .faq-answer.open { max-height: 200px; margin-top: 15px; }

    .cta-strip {
      background: linear-gradient(90deg, #0A0E17 0%, #1A0A2E 100%);
      text-align: center;
      padding: 70px 20px;
      border-radius: 40px;
      margin: 40px 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      padding: 60px 0 30px;
      border-top: 1px solid rgba(255,255,255,0.1);
    }

    @media (max-width: 1024px) {
      .hero { flex-direction: column; text-align: center; }
      .hero-left { padding-right: 0; margin-bottom: 50px; }
      .grid-3 { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .desktop-nav-links { display: none; }
      .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 16px;
        left: 16px;
        right: 16px;
        background: rgba(10,14,23,0.95);
        backdrop-filter: blur(30px);
        border-radius: 80px;
        padding: 10px 24px;
        justify-content: space-around;
        align-items: center;
        border: 1px solid rgba(0,229,255,0.3);
        z-index: 99;
        box-shadow: 0 10px 30px black;
      }
      .mobile-nav-item {
        color: var(--text-secondary);
        font-size: 13px;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-decoration: none;
        font-weight: 500;
      }
      .mobile-cta {
        background: var(--cta-orange);
        padding: 10px 25px;
        border-radius: 40px;
        color: white;
        font-weight: 700;
      }
      .grid-3 { grid-template-columns: 1fr; }
      .hero-title { font-size: 36px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .plan-table { flex-direction: column; }
      .main-nav { padding: 10px 20px; }
    }

.faq-question span { font-size:24px; transition: 0.3s; }
    .plan-table .plan { text-align:center; }
    a { color: var(--accent); text-decoration: none; }