/* roulang page: index */
:root {
      --primary-deep: #0B1A2F;
      --accent-gold: #D4AF37;
      --accent-teal: #2EC4B6;
      --bg-light: #F8F9FA;
      --bg-alt: #EEF0F2;
      --text-dark: #1A1A1A;
      --text-muted: #5A5A5A;
      --white: #FFFFFF;
      --border-light: #E8EAED;
      --border-input: #D1D5DB;
      --radius-card: 12px;
      --radius-btn: 8px;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 32px rgba(0,0,0,0.08);
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      --font-mono: 'Inter', 'SF Pro Display', system-ui, -apple-system, sans-serif;
      --transition: 0.25s ease;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      color: var(--text-dark);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    button, .btn {
      cursor: pointer;
      font-family: inherit;
      border: none;
      background: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      transition: all 0.3s ease;
    }
    input {
      font-family: inherit;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }
    /* 导航 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: rgba(11, 26, 47, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      z-index: 1000;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      display: flex;
      align-items: center;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 12px;
      color: white;
    }
    .logo-main {
      font-weight: 700;
      font-size: 20px;
      letter-spacing: 1px;
    }
    .logo-main .gold {
      color: var(--accent-gold);
    }
    .logo-divider {
      width: 1px;
      height: 18px;
      background: rgba(255,255,255,0.3);
    }
    .logo-sub {
      font-weight: 300;
      font-size: 14px;
      color: var(--accent-teal);
      letter-spacing: 0.5px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-menu a {
      color: rgba(255,255,255,0.8);
      font-weight: 500;
      font-size: 15px;
      position: relative;
      padding: 4px 0;
    }
    .nav-menu a:hover {
      color: #FFFFFF;
    }
    .nav-menu a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--accent-gold);
      transition: width 0.25s ease;
    }
    .nav-menu a:hover::after {
      width: 100%;
    }
    .btn-primary {
      background: var(--accent-gold);
      color: var(--primary-deep);
      border-radius: var(--radius-btn);
      padding: 10px 24px;
      font-weight: 700;
      font-size: 15px;
      box-shadow: 0 4px 12px rgba(212,175,55,0.2);
    }
    .btn-primary:hover {
      background: #B8962E;
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(212,175,55,0.35);
    }
    .btn-outline {
      border: 2px solid var(--accent-teal);
      color: var(--accent-teal);
      background: transparent;
      border-radius: var(--radius-btn);
      padding: 12px 32px;
      font-weight: 600;
    }
    .btn-outline:hover {
      background: var(--accent-teal);
      color: white;
      transform: translateY(-2px);
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      border: none;
      cursor: pointer;
    }
    .hamburger span {
      width: 24px;
      height: 2px;
      background: white;
      display: block;
      transition: 0.3s;
    }
    .mobile-drawer {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      width: 100%;
      height: calc(100vh - 72px);
      background: #0B1A2F;
      flex-direction: column;
      gap: 32px;
      padding: 40px 24px;
      z-index: 999;
      transform: translateX(-100%);
      transition: transform 0.3s ease;
    }
    .mobile-drawer.open {
      transform: translateX(0);
    }
    .mobile-drawer a {
      color: white;
      font-size: 20px;
      border-left: 3px solid var(--accent-teal);
      padding-left: 16px;
    }
    @media (max-width: 768px) {
      .nav-menu, .header-cta-desktop {
        display: none;
      }
      .hamburger {
        display: flex;
      }
      .mobile-drawer {
        display: flex;
      }
    }
    /* 板块通用 */
    section {
      padding: 120px 0;
    }
    .section-title {
      font-size: 36px;
      font-weight: 600;
      line-height: 1.25;
      margin-bottom: 16px;
      color: var(--primary-deep);
    }
    .section-sub {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 48px;
    }
    @media (max-width: 768px) {
      section {
        padding: 80px 0;
      }
      .section-title {
        font-size: 28px;
      }
    }
    /* Hero */
    #hero {
      height: 100vh;
      min-height: 700px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
      display: flex;
      align-items: center;
      padding-top: 72px;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(11,26,47,0.9) 0%, rgba(11,26,47,0.4) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      gap: 48px;
      width: 100%;
    }
    .hero-left {
      flex: 55%;
    }
    .hero-right {
      flex: 45%;
      background: rgba(11,26,47,0.7);
      backdrop-filter: blur(12px);
      border-radius: 16px;
      border: 1px solid rgba(46,196,182,0.3);
      padding: 32px;
      color: white;
    }
    .hero h1 {
      font-size: 48px;
      font-weight: 700;
      line-height: 1.15;
      color: white;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }
    .hero h1 .gold {
      color: var(--accent-gold);
    }
    .hero-sub {
      font-size: 18px;
      font-weight: 300;
      color: rgba(255,255,255,0.8);
      margin-bottom: 32px;
    }
    .stats-row {
      display: flex;
      gap: 32px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .stat-item .stat-num {
      font-family: var(--font-mono);
      font-size: 32px;
      font-weight: 700;
      color: var(--accent-gold);
    }
    .stat-label {
      color: rgba(255,255,255,0.7);
      font-size: 14px;
    }
    .cta-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .mock-panel {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .odds-line {
      display: flex;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255,255,255,0.15);
      padding-bottom: 8px;
    }
    .blink {
      color: var(--accent-gold);
      font-weight: 700;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; } 50% { opacity: 0.5; } 100% { opacity: 1; }
    }
    @media (max-width: 1024px) {
      .hero-content {
        flex-direction: column;
      }
      .hero-right {
        width: 100%;
        max-height: 240px;
        overflow: hidden;
      }
    }
    /* 优势 */
    .adv-grid {
      display: grid;
      grid-template-columns: 2fr 1px 2fr;
      gap: 32px;
      align-items: center;
    }
    .adv-divider {
      background: var(--border-light);
      height: 100%;
    }
    .big-number {
      font-family: var(--font-mono);
      font-size: 48px;
      font-weight: 700;
      color: var(--accent-teal);
    }
    @media (max-width: 768px) {
      .adv-grid {
        grid-template-columns: 1fr;
      }
      .adv-divider {
        display: none;
      }
    }
    /* 服务卡片 2x3 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 28px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      background: rgba(46,196,182,0.1);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--accent-teal);
      font-size: 24px;
    }
    .card-tag {
      background: var(--accent-teal);
      color: white;
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 20px;
      display: inline-block;
      margin-top: 16px;
    }
    @media (max-width: 1024px) {
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 640px) {
      .services-grid {
        grid-template-columns: 1fr;
      }
    }
    /* 对比 */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
    }
    .compare-col h3 {
      font-size: 22px;
      margin-bottom: 24px;
    }
    .progress-row {
      margin-bottom: 20px;
    }
    .progress-bar {
      height: 8px;
      background: #E8EAED;
      border-radius: 4px;
      margin: 8px 0;
      overflow: hidden;
    }
    .progress-fill {
      height: 100%;
      border-radius: 4px;
    }
    .left-fill { background: var(--accent-teal); }
    .right-fill { background: #CCCCCC; }
    @media (max-width: 768px) {
      .compare-container {
        grid-template-columns: 1fr;
      }
    }
    /* FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0 40px;
    }
    .faq-item {
      border-bottom: 1px solid var(--border-light);
      padding: 20px 0;
    }
    .faq-q {
      display: flex;
      justify-content: space-between;
      font-weight: 600;
      font-size: 18px;
      cursor: pointer;
    }
    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      color: var(--text-muted);
    }
    .faq-item.open .faq-a {
      max-height: 200px;
      margin-top: 12px;
    }
    @media (max-width: 768px) {
      .faq-grid {
        grid-template-columns: 1fr;
      }
    }
    /* CTA表单 */
    #cta {
      background: var(--primary-deep);
    }
    .cta-card {
      background: white;
      border-radius: 16px;
      padding: 48px;
      max-width: 600px;
      margin: 0 auto;
    }
    .input-field {
      width: 100%;
      height: 48px;
      border: 1px solid var(--border-input);
      border-radius: 8px;
      padding: 0 16px;
      margin-bottom: 20px;
      transition: 0.2s;
    }
    .input-field:focus {
      outline: none;
      border-color: var(--accent-teal);
      box-shadow: 0 0 0 3px rgba(46,196,182,0.15);
    }
    .btn-submit {
      width: 100%;
      background: var(--accent-teal);
      color: white;
      padding: 14px;
      border-radius: 8px;
      font-weight: 700;
    }
    footer {
      background: #0B1A2F;
      color: rgba(255,255,255,0.6);
      padding: 40px 0;
    }
    .footer-grid {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }