/* roulang page: index */
:root {
      --bg-deep: #0A0E17;
      --red-fiery: #FF4655;
      --warm-paper: #F5F0EB;
      --gold-amber: #FFD166;
      --text-white: #FFFFFF;
      --text-body: #B0B8C1;
      --border-light: #E5DFD7;
      --shadow-card: 0 4px 20px rgba(0,0,0,0.08);
      --shadow-hover: 0 8px 32px rgba(255,70,85,0.15);
      --radius-xl: 16px;
      --radius-lg: 12px;
      --radius-md: 8px;
      --font-title: 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
      --font-body: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      --transition: all 0.25s ease;
    }

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

    body {
      font-family: var(--font-body);
      background-color: var(--bg-deep);
      color: var(--text-body);
      line-height: 1.7;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
      scroll-behavior: smooth;
    }

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

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

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

    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(10, 14, 23, 0.85);
      backdrop-filter: blur(12px);
      z-index: 1000;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 900;
      font-size: 1.7rem;
      color: var(--text-white);
      letter-spacing: 2px;
    }
    .logo-icon {
      width: 38px;
      height: 38px;
      background: var(--red-fiery);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      color: white;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
    }
    .nav-links a {
      color: var(--text-body);
      font-weight: 500;
      font-size: 0.95rem;
      position: relative;
    }
    .nav-links a:hover {
      color: var(--text-white);
    }
    .nav-cta {
      background: var(--red-fiery);
      color: white !important;
      padding: 0.5rem 1.4rem;
      border-radius: var(--radius-md);
      font-weight: 600;
    }
    .nav-cta:hover {
      background: #e63946;
    }
    .mobile-nav {
      display: none;
    }

    /* Hero */
    .hero {
      padding: 140px 0 80px;
      background: radial-gradient(circle at 70% 50%, rgba(255,70,85,0.15) 0%, rgba(10,14,23,1) 70%);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.9fr;
      gap: 3rem;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 3.2rem;
      font-weight: 900;
      color: var(--text-white);
      line-height: 1.2;
      margin-bottom: 1.2rem;
      letter-spacing: 1px;
    }
    .hero-content p {
      font-size: 1.15rem;
      color: #cfd5de;
      margin-bottom: 2rem;
      max-width: 480px;
    }
    .hero-buttons {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, #FF4655 0%, #FF7b4a 100%);
      color: white;
      font-weight: 700;
      padding: 0.9rem 2.2rem;
      border-radius: var(--radius-md);
      border: none;
      font-size: 1rem;
      cursor: pointer;
      transition: all 0.2s;
      display: inline-block;
      text-align: center;
    }
    .btn-primary:hover {
      filter: brightness(1.1);
      transform: scale(1.02);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--red-fiery);
      color: var(--red-fiery);
      font-weight: 600;
      padding: 0.9rem 2.2rem;
      border-radius: var(--radius-md);
      font-size: 1rem;
      cursor: pointer;
      transition: all 0.2s;
    }
    .btn-outline:hover {
      background: rgba(255,70,85,0.08);
    }
    .hero-visual {
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      border-radius: 24px;
      height: 380px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
      display: flex;
      align-items: flex-end;
      justify-content: center;
      overflow: hidden;
    }
    .hero-visual::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(0deg, rgba(10,14,23,0.7) 0%, transparent 50%);
    }

    /* 数据亮点 */
    .stats-section {
      padding: 60px 0;
      background: #0d121c;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .stat-item {
      background: rgba(255,255,255,0.02);
      border-radius: var(--radius-lg);
      padding: 2rem 1rem;
      border: 1px solid rgba(255,255,255,0.06);
    }
    .stat-number {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--gold-amber);
      font-family: 'DIN Alternate', 'Noto Sans SC', sans-serif;
      letter-spacing: 1px;
    }
    .stat-label {
      color: #9aa0ab;
      font-size: 0.9rem;
      margin-top: 0.4rem;
    }

    /* 通用板块 */
    .section {
      padding: 80px 0;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-white);
      margin-bottom: 0.8rem;
      text-align: center;
    }
    .section-sub {
      color: #a0aab4;
      text-align: center;
      margin-bottom: 3.5rem;
      font-size: 1.05rem;
    }

    /* 核心优势 2x3 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.8rem;
    }
    .adv-card {
      background: var(--warm-paper);
      border-radius: var(--radius-xl);
      padding: 2rem 1.5rem;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .adv-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .adv-icon {
      font-size: 2rem;
      color: var(--red-fiery);
      margin-bottom: 1.2rem;
    }
    .adv-card h3 {
      font-size: 1.4rem;
      font-weight: 700;
      color: #0A0E17;
      margin-bottom: 0.6rem;
    }
    .adv-card p {
      color: #4a4f58;
      font-size: 0.9rem;
    }

    /* 赛事瀑布流 */
    .waterfall {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.8rem;
    }
    .event-card {
      background: var(--warm-paper);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .event-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .event-img {
      height: 200px;
      background-size: cover;
      background-position: center;
    }
    .event-info {
      padding: 1.2rem;
    }
    .event-info h3 {
      font-weight: 700;
      color: #0A0E17;
      font-size: 1.2rem;
    }
    .event-date {
      color: #9b9ea5;
      font-size: 0.8rem;
      margin: 0.3rem 0 0.3rem;
    }
    .event-desc {
      color: #4a4f58;
    }

    /* 方案对比表 */
    .compare-table {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0;
      background: #1c212b;
      border-radius: var(--radius-xl);
      overflow: hidden;
    }
    .plan-col {
      padding: 2rem 1.5rem;
      text-align: center;
      border-right: 1px solid rgba(255,255,255,0.05);
    }
    .plan-col:last-child { border-right: none; }
    .featured-plan {
      background: #1f2633;
      position: relative;
      border-top: 4px solid var(--red-fiery);
    }
    .badge-hot {
      background: var(--red-fiery);
      color: white;
      padding: 0.2rem 1rem;
      border-radius: 20px;
      font-size: 0.7rem;
      font-weight: 700;
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
    }
    .plan-price {
      font-size: 2rem;
      font-weight: 800;
      color: white;
      margin: 1rem 0;
    }
    .feature-list {
      text-align: left;
      margin: 1.5rem 0;
    }
    .feature-item {
      padding: 0.5rem 0;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: #cfd5de;
    }
    .check { color: #2ecc71; }
    .cross { color: #e74c3c; }

    /* FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
    .faq-item {
      background: #161d29;
      border-radius: var(--radius-md);
      margin-bottom: 0.8rem;
      border-left: 4px solid transparent;
      transition: 0.2s;
    }
    .faq-item.active {
      border-left-color: var(--red-fiery);
      background: #1e2735;
    }
    .faq-question {
      padding: 1rem 1.5rem;
      font-weight: 700;
      color: white;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }
    .faq-answer {
      padding: 0 1.5rem 1rem;
      color: #b0b8c1;
      display: none;
    }
    .faq-item.active .faq-answer { display: block; }

    /* CTA 横幅 */
    .cta-banner {
      background: radial-gradient(circle at center, rgba(255,70,85,0.25) 0%, #0A0E17 80%);
      padding: 80px 0;
      text-align: center;
    }
    .cta-banner h2 {
      font-size: 2.5rem;
      color: white;
    }

    /* 页脚 */
    .footer {
      background: #06090f;
      padding: 60px 0 20px;
      color: #9aa0ab;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
    }
    .footer-col h4 {
      color: white;
      margin-bottom: 1rem;
    }
    .footer a { color: #b0b8c1; display: block; margin-bottom: 0.5rem; }
    .copyright {
      border-top: 1px solid #1e2530;
      margin-top: 2rem;
      padding-top: 1.5rem;
      text-align: center;
    }

    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .advantages-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .mobile-nav {
        display: flex; position: fixed; bottom: 0; width: 100%; background: #0A0E17;
        justify-content: space-around; padding: 12px; z-index: 999; border-top: 1px solid #222;
      }
      .advantages-grid, .waterfall, .faq-grid { grid-template-columns: 1fr; }
      .compare-table { grid-template-columns: 1fr; overflow-x: auto; }
      .hero-content h1 { font-size: 2.4rem; }
    }