/* roulang page: index */
:root {
      --deep-brown: #2A2018;
      --charcoal: #1C1C1C;
      --amber-gold: #F5A623;
      --amber-light: #F7B84C;
      --burst-red: #E94E3C;
      --grass-green: #2E8B57;
      --white: #FFFFFF;
      --gray-light: #B0B0B0;
      --gray-mid: #8A8A8A;
      --border-soft: rgba(245, 166, 35, 0.25);
      --card-bg: rgba(255, 255, 255, 0.05);
      --glow-amber: 0 0 15px rgba(245, 166, 35, 0.15);
      --radius-card: 12px;
      --radius-pill: 30px;
      --radius-dock: 40px;
      --font-body: 'Noto Sans SC', sans-serif;
      --font-number: 'Inter', sans-serif;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-body);
      background: linear-gradient(135deg, #1C1C1C 0%, #2A2018 100%);
      color: var(--white);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      background-attachment: fixed;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input {
      font-family: var(--font-body);
      outline: none;
    }
    /* 浮动Dock导航 */
    .dock-nav {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: auto;
      max-width: 720px;
      background: rgba(28, 28, 28, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-dock);
      padding: 8px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      z-index: 1000;
      box-shadow: 0 8px 20px rgba(0,0,0,0.5);
      transition: background 0.3s, box-shadow 0.3s;
    }
    .dock-nav.scrolled {
      background: rgba(0, 0, 0, 0.9);
      box-shadow: 0 10px 25px rgba(0,0,0,0.7);
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 8px;
      flex: 1;
    }
    .logo-icon {
      font-size: 24px;
      color: var(--amber-gold);
    }
    .logo-text {
      font-weight: 700;
      font-size: 20px;
      color: var(--amber-gold);
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      gap: 24px;
      align-items: center;
      flex: 2;
      justify-content: center;
    }
    .nav-links a {
      color: var(--gray-light);
      font-weight: 400;
      font-size: 15px;
      transition: color 0.2s, border-bottom 0.2s;
      padding-bottom: 2px;
      border-bottom: 2px solid transparent;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--amber-gold);
      border-bottom-color: var(--amber-gold);
    }
    .nav-cta {
      flex: 1;
      display: flex;
      justify-content: flex-end;
    }
    .btn-pill-sm {
      background: var(--amber-gold);
      color: #1C1C1C;
      font-weight: 700;
      padding: 8px 20px;
      border-radius: var(--radius-pill);
      font-size: 14px;
      transition: background 0.2s, box-shadow 0.2s;
      white-space: nowrap;
    }
    .btn-pill-sm:hover {
      background: var(--amber-light);
      box-shadow: 0 0 10px rgba(245,166,35,0.5);
    }
    .hamburger {
      display: none;
      font-size: 24px;
      color: var(--amber-gold);
      cursor: pointer;
      background: none;
      border: none;
    }
    .mobile-menu {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0,0,0,0.95);
      backdrop-filter: blur(10px);
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 32px;
      z-index: 999;
    }
    .mobile-menu a {
      font-size: 24px;
      color: var(--white);
      font-weight: 500;
    }
    .mobile-menu .close-btn {
      position: absolute;
      top: 24px;
      right: 24px;
      font-size: 32px;
      color: var(--amber-gold);
      background: none;
      border: none;
    }
    /* Hero */
    .hero {
      padding: 140px 0 80px;
      display: flex;
      align-items: center;
      gap: 60px;
      position: relative;
    }
    .hero-left {
      flex: 1;
    }
    .hero-right {
      flex: 1;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    h1 {
      font-size: 42px;
      font-weight: 700;
      color: var(--amber-gold);
      letter-spacing: -0.5px;
      line-height: 1.3;
      margin-bottom: 20px;
    }
    .hero-sub {
      font-size: 18px;
      color: var(--gray-light);
      margin-bottom: 32px;
      max-width: 480px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--amber-gold);
      color: #1C1C1C;
      font-weight: 700;
      padding: 14px 32px;
      border-radius: var(--radius-pill);
      border: none;
      cursor: pointer;
      font-size: 16px;
      transition: background 0.3s, box-shadow 0.3s;
      display: inline-block;
    }
    .btn-primary:hover {
      background: var(--amber-light);
      box-shadow: 0 4px 15px rgba(245,166,35,0.4);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--amber-gold);
      color: var(--amber-gold);
      padding: 14px 32px;
      border-radius: var(--radius-pill);
      font-weight: 700;
      cursor: pointer;
      transition: background 0.3s, color 0.3s;
    }
    .btn-outline:hover {
      background: rgba(245,166,35,0.1);
    }
    .metric-card {
      background: var(--card-bg);
      border: 1px solid rgba(245,166,35,0.2);
      border-radius: 8px;
      padding: 20px;
      text-align: center;
      backdrop-filter: blur(4px);
    }
    .metric-number {
      font-family: var(--font-number);
      font-size: 36px;
      font-weight: 700;
      color: var(--amber-gold);
      text-shadow: 0 0 8px rgba(245,166,35,0.5);
    }
    .metric-label {
      color: var(--gray-light);
      font-size: 14px;
      margin-top: 5px;
    }
    /* 板块通用 */
    section {
      padding: 80px 0;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--white);
      margin-bottom: 16px;
      position: relative;
      display: inline-block;
    }
    .section-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -8px;
      width: 60px;
      height: 4px;
      background: var(--amber-gold);
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 40px;
    }
    .service-card {
      background: var(--card-bg);
      border: 1px solid rgba(245,166,35,0.2);
      border-radius: var(--radius-card);
      padding: 32px;
      transition: transform 0.3s ease, border-color 0.3s, box-shadow 0.3s;
    }
    .service-card:hover {
      transform: translateY(-4px);
      border-color: rgba(245,166,35,0.5);
      box-shadow: var(--glow-amber);
    }
    .service-icon {
      font-size: 40px;
      color: var(--amber-gold);
      margin-bottom: 16px;
    }
    .service-card h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .service-desc {
      color: var(--gray-light);
      font-size: 15px;
      margin-bottom: 16px;
    }
    .service-stat {
      color: var(--amber-gold);
      font-weight: 700;
    }
    .text-link {
      color: var(--amber-gold);
      font-weight: 500;
      display: inline-block;
      margin-top: 8px;
      position: relative;
    }
    .text-link::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 1px;
      background: var(--amber-gold);
      transition: width 0.3s;
    }
    .text-link:hover::after {
      width: 100%;
    }
    /* 对比区 */
    .comparison-row {
      display: flex;
      gap: 0;
      margin-top: 40px;
      align-items: stretch;
    }
    .vs-col {
      flex: 1;
      background: rgba(255,255,255,0.03);
      border-radius: 12px;
      padding: 32px;
    }
    .vs-col.bad {
      border: 1px solid rgba(255,255,255,0.1);
    }
    .vs-col.good {
      border: 1px solid rgba(46,139,87,0.4);
      background: rgba(46,139,87,0.05);
    }
    .vs-divider {
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--amber-gold);
      font-size: 24px;
      padding: 0 16px;
    }
    .list-item {
      display: flex;
      align-items: center;
      gap: 12px;
      margin: 16px 0;
    }
    .fa-times-circle {
      color: var(--burst-red);
    }
    .fa-check-circle {
      color: var(--grass-green);
    }
    /* FAQ */
    .faq-item {
      background: rgba(255,255,255,0.03);
      border-radius: 8px;
      margin-bottom: 12px;
      padding: 16px 20px;
      cursor: pointer;
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      color: var(--gray-light);
      margin-top: 8px;
    }
    .faq-item.open .faq-answer {
      max-height: 150px;
    }
    /* CTA表单 */
    .cta-form {
      background: rgba(255,255,255,0.05);
      border-radius: 16px;
      padding: 48px;
      display: flex;
      gap: 40px;
      flex-wrap: wrap;
    }
    .form-input {
      background: transparent;
      border: 1px solid rgba(245,166,35,0.3);
      border-radius: 30px;
      padding: 14px 20px;
      color: white;
      width: 100%;
      margin-bottom: 16px;
      transition: border 0.3s;
    }
    .form-input:focus {
      border-color: var(--amber-gold);
      box-shadow: 0 0 8px rgba(245,166,35,0.4);
    }
    .trust-badges {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
      margin-top: 20px;
    }
    .badge-item {
      display: flex;
      align-items: center;
      gap: 6px;
      color: var(--gray-mid);
    }
    footer {
      background: #0f0f0f;
      padding: 60px 0 30px;
      border-top: 1px solid rgba(245,166,35,0.2);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
    }
    @media (max-width: 1024px) {
      .hero {
        flex-direction: column;
      }
      .grid-3 {
        grid-template-columns: 1fr 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .dock-nav .nav-links, .dock-nav .nav-cta {
        display: none;
      }
      .hamburger {
        display: block;
      }
      .grid-3 {
        grid-template-columns: 1fr;
      }
      .comparison-row {
        flex-direction: column;
      }
      .vs-divider {
        padding: 16px 0;
      }
      h1 {
        font-size: 32px;
      }
      .hero-right {
        grid-template-columns: 1fr 1fr;
      }
    }