/* roulang page: index */
:root {
      --primary-orange: #FF4D00;
      --primary-orange-light: #FF7A00;
      --accent-cyan: #00E5FF;
      --deep-black: #0D0F13;
      --card-bg: #1A1D24;
      --text-primary: #EAECEF;
      --text-secondary: #848E9C;
      --border-light: #2B2F36;
      --radius-lg: 16px;
      --radius-pill: 50px;
      --radius-capsule: 20px;
      --shadow-card: 0 10px 30px -10px rgba(0,0,0,0.5);
      --transition-smooth: all 0.25s ease;
      --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--deep-black);
      color: var(--text-primary);
      line-height: 1.6;
      margin: 0;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* 导航悬浮胶囊 */
    .main-nav {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 40px);
      max-width: 1100px;
      background: rgba(13, 15, 19, 0.8);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-radius: var(--radius-pill);
      border: 1px solid rgba(255,255,255,0.1);
      padding: 0.6rem 1.8rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      z-index: 1000;
      box-shadow: 0 8px 20px rgba(0,0,0,0.4);
    }

    .nav-logo {
      font-size: 1.6rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary-orange), var(--primary-orange-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: flex;
      align-items: center;
      gap: 0.3rem;
      letter-spacing: -0.5px;
    }

    .nav-logo i {
      background: none;
      -webkit-text-fill-color: var(--primary-orange);
      font-size: 1.8rem;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
      margin: 0;
    }

    .nav-links a {
      color: var(--text-secondary);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: var(--transition-smooth);
      padding: 0.3rem 0;
    }

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

    .nav-cta {
      background: linear-gradient(135deg, var(--primary-orange) 0%, var(--primary-orange-light) 100%);
      color: white !important;
      padding: 0.6rem 1.8rem !important;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 0.9rem;
      transition: var(--transition-smooth);
      border: none;
      cursor: pointer;
    }

    .nav-cta:hover {
      transform: scale(1.03);
      filter: brightness(1.1);
      color: white !important;
    }

    .hamburger {
      display: none;
      background: none;
      border: none;
      color: var(--text-primary);
      font-size: 1.8rem;
      cursor: pointer;
    }

    /* 板块通用 */
    section {
      padding: 5rem 0;
    }

    .section-title {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 1rem;
    }

    .section-title::before {
      content: '';
      display: inline-block;
      width: 4px;
      height: 32px;
      background: var(--primary-orange);
      border-radius: 4px;
    }

    .text-cyan {
      color: var(--accent-cyan);
    }

    .text-orange {
      color: var(--primary-orange);
    }

    /* Hero */
    .hero {
      padding: 8rem 0 5rem;
      background: radial-gradient(circle at 30% 40%, rgba(255,77,0,0.08) 0%, #0D0F13 70%);
    }

    .hero-grid {
      display: flex;
      align-items: center;
      gap: 3rem;
    }

    .hero-left {
      flex: 1;
    }

    .hero-right {
      flex: 1;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      border-radius: var(--radius-lg);
      min-height: 380px;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-light);
      position: relative;
      overflow: hidden;
    }

    .hero-right::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(13,15,19,0.7) 0%, transparent 100%);
    }

    h1 {
      font-size: 3.5rem;
      font-weight: 800;
      line-height: 1.15;
      letter-spacing: -0.02em;
      margin-bottom: 1.5rem;
    }

    .hero-sub {
      font-size: 1.2rem;
      color: #B0B8C1;
      margin-bottom: 2rem;
      max-width: 90%;
    }

    .btn-group {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      margin-bottom: 2rem;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary-orange) 0%, var(--primary-orange-light) 100%);
      color: white;
      border: none;
      padding: 0.85rem 2.2rem;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 1rem;
      transition: var(--transition-smooth);
      cursor: pointer;
      display: inline-block;
      text-decoration: none;
    }

    .btn-primary:hover {
      transform: scale(1.03);
      filter: brightness(1.15);
      color: white;
    }

    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--accent-cyan);
      color: var(--accent-cyan);
      padding: 0.85rem 2.2rem;
      border-radius: var(--radius-pill);
      font-weight: 600;
      transition: var(--transition-smooth);
      cursor: pointer;
      text-decoration: none;
    }

    .btn-outline:hover {
      background: var(--accent-cyan);
      color: var(--deep-black);
    }

    .badge-group {
      display: flex;
      gap: 0.8rem;
      flex-wrap: wrap;
    }

    .badge {
      background: rgba(26,29,36,0.8);
      backdrop-filter: blur(8px);
      padding: 0.4rem 1.2rem;
      border-radius: var(--radius-capsule);
      font-size: 0.9rem;
      color: var(--text-primary);
      border: 1px solid var(--border-light);
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }

    .badge i {
      color: var(--accent-cyan);
    }

    /* 卡片网格 */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 2rem;
      margin-top: 2rem;
    }

    .feature-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 2rem;
      border: 1px solid var(--border-light);
      transition: var(--transition-smooth);
      box-shadow: var(--shadow-card);
    }

    .feature-card:hover {
      transform: translateY(-8px);
      border-color: var(--accent-cyan);
      box-shadow: 0 20px 35px -12px rgba(0,229,255,0.15);
    }

    .feature-icon {
      font-size: 2.2rem;
      background: linear-gradient(135deg, var(--primary-orange), var(--primary-orange-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 1.2rem;
    }

    .feature-card h3 {
      font-size: 1.375rem;
      font-weight: 600;
      margin-bottom: 0.8rem;
    }

    .feature-card p {
      color: var(--text-secondary);
      line-height: 1.5;
    }

    /* 数据看板 */
    .data-board {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 2rem;
      border: 1px solid var(--border-light);
    }

    .match-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1.2rem 0;
      border-bottom: 1px solid var(--border-light);
    }

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

    .team {
      display: flex;
      align-items: center;
      gap: 1rem;
      font-weight: 600;
    }

    .score {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--accent-cyan);
      font-feature-settings: 'tnum';
      letter-spacing: 2px;
    }

    /* 方案对比 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 2rem;
      margin-top: 2rem;
    }

    .plan-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 2rem;
      border: 1px solid var(--border-light);
      text-align: center;
      transition: var(--transition-smooth);
    }

    .plan-card.featured {
      background: linear-gradient(145deg, #1F1B18 0%, #1A1D24 100%);
      border-color: var(--primary-orange);
      position: relative;
    }

    .popular-badge {
      background: var(--primary-orange);
      color: white;
      padding: 0.3rem 1.2rem;
      border-radius: var(--radius-capsule);
      font-size: 0.8rem;
      font-weight: 600;
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
    }

    .plan-price {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--accent-cyan);
    }

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

    .faq-item {
      background: var(--card-bg);
      border-radius: 12px;
      margin-bottom: 1rem;
      border-left: 4px solid var(--primary-orange);
      overflow: hidden;
    }

    .faq-question {
      padding: 1.2rem 2rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-answer {
      padding: 0 2rem 1.2rem;
      color: var(--text-secondary);
      display: none;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* CTA */
    .cta-banner {
      background: radial-gradient(circle at 30% 30%, rgba(255,77,0,0.2) 0%, #0A0B0E 80%);
      border-radius: var(--radius-lg);
      padding: 4rem 2rem;
      text-align: center;
    }

    .email-form {
      display: flex;
      max-width: 480px;
      margin: 2rem auto 0;
    }

    .email-input {
      flex: 1;
      background: var(--card-bg);
      border: 1px solid var(--accent-cyan);
      border-right: none;
      padding: 0.9rem 1.5rem;
      border-radius: var(--radius-pill) 0 0 var(--radius-pill);
      color: white;
      outline: none;
    }

    .submit-btn {
      background: linear-gradient(135deg, var(--primary-orange), var(--primary-orange-light));
      border: none;
      color: white;
      padding: 0 2rem;
      border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition-smooth);
    }

    .footer-bottom {
      text-align: center;
      padding: 2rem 0;
      color: var(--text-secondary);
      border-top: 1px solid var(--border-light);
      margin-top: 2rem;
    }

    @media (max-width: 1024px) {
      h1 { font-size: 2.8rem; }
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .hero-grid { flex-direction: column; }
      .hero-right { min-height: 280px; width: 100%; }
      h1 { font-size: 2.3rem; }
      .section-title { font-size: 1.9rem; }
    }

    @media (max-width: 520px) {
      .btn-group { flex-direction: column; }
    }