/* roulang page: index */
* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --deep-black: #0A0E17;
      --card-bg: #141B26;
      --primary-text: #EDF2F7;
      --secondary-text: #8899AA;
      --border-color: #1E2733;
      --accent-green: #00F0A8;
      --accent-red: #FF4D2E;
      --font-sans: 'Noto Sans SC', 'PingFang SC', system-ui, -apple-system, sans-serif;
      --font-mono: 'Inter', 'Roboto', monospace;
      --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
      --shadow-glow: 0 8px 40px rgba(0,240,168,0.15);
      --border-radius-card: 12px;
      --border-radius-btn: 8px;
      --border-radius-tag: 6px;
      --transition: all 0.25s ease;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--deep-black);
      color: var(--primary-text);
      line-height: 1.75;
      font-size: 16px;
      font-weight: 400;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }
    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }
    }
    /* 导航栏 */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 14, 23, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      height: 72px;
      display: flex;
      align-items: center;
      border-bottom: 1px solid var(--accent-green);
      box-shadow: 0 2px 12px rgba(0,0,0,0.3);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .logo {
      font-family: var(--font-sans);
      font-weight: 800;
      font-size: 1.7rem;
      letter-spacing: 2px;
      color: var(--primary-text);
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo span {
      color: var(--accent-green);
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--secondary-text);
      text-decoration: none;
      position: relative;
      padding: 6px 0;
      transition: var(--transition);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-green);
      transition: width 0.25s ease;
    }
    .nav-links a:hover {
      color: var(--accent-green);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: var(--primary-text);
      cursor: pointer;
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(10, 14, 23, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 32px 0;
        gap: 24px;
        text-align: center;
        border-bottom: 1px solid var(--accent-green);
      }
      .nav-links.active {
        display: flex;
      }
      .hamburger {
        display: block;
      }
    }
    /* 板块通用 */
    section {
      padding: 120px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 80px 0;
      }
    }
    .section-title {
      font-size: 40px;
      font-weight: 700;
      margin-bottom: 20px;
      padding-left: 16px;
      border-left: 4px solid var(--accent-green);
      line-height: 1.25;
      color: var(--primary-text);
    }
    @media (max-width: 768px) {
      .section-title {
        font-size: 28px;
      }
    }
    /* Hero */
    .hero {
      height: 100vh;
      min-height: 700px;
      background: linear-gradient(0deg, rgba(10,14,23,0.75) 0%, rgba(10,14,23,0.45) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      display: flex;
      align-items: center;
      position: relative;
    }
    .hero-content {
      max-width: 700px;
    }
    .hero h1 {
      font-size: 56px;
      font-weight: 800;
      line-height: 1.15;
      margin-bottom: 24px;
      color: white;
    }
    .hero h1 .highlight {
      color: var(--accent-green);
    }
    .hero p {
      font-size: 1.3rem;
      color: var(--secondary-text);
      margin-bottom: 40px;
      max-width: 560px;
    }
    .btn-group {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--accent-green);
      color: #0A0E17;
      font-weight: 700;
      padding: 16px 36px;
      border-radius: var(--border-radius-btn);
      text-decoration: none;
      display: inline-block;
      transition: var(--transition);
      border: none;
      cursor: pointer;
      font-size: 1rem;
      letter-spacing: 0.5px;
      box-shadow: 0 4px 16px rgba(0,240,168,0.25);
    }
    .btn-primary:hover {
      background: #00d494;
      box-shadow: 0 8px 28px rgba(0,240,168,0.45);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--accent-green);
      color: var(--accent-green);
      font-weight: 600;
      padding: 16px 36px;
      border-radius: var(--border-radius-btn);
      text-decoration: none;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: var(--accent-green);
      color: #0A0E17;
    }
    .floating-stats {
      position: absolute;
      right: 6%;
      bottom: 15%;
      background: rgba(20,27,38,0.8);
      backdrop-filter: blur(12px);
      padding: 20px 28px;
      border-radius: var(--border-radius-card);
      border: 1px solid var(--border-color);
      display: flex;
      gap: 32px;
    }
    .stat-item {
      text-align: center;
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 2rem;
      font-weight: 900;
      color: var(--accent-green);
      text-shadow: 0 0 10px rgba(0,240,168,0.5);
    }
    .stat-label {
      font-size: 0.8rem;
      color: var(--secondary-text);
    }
    @media (max-width: 768px) {
      .hero {
        height: 70vh;
        min-height: 600px;
      }
      .hero h1 {
        font-size: 36px;
      }
      .floating-stats {
        position: static;
        margin-top: 30px;
        justify-content: center;
        background: transparent;
        border: none;
        padding: 0;
      }
    }
    /* 数据看板 */
    .data-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .data-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--border-radius-card);
      padding: 28px;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .data-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--accent-green), transparent);
    }
    .data-card:hover {
      border-color: var(--accent-green);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }
    .big-number {
      font-family: var(--font-mono);
      font-size: 44px;
      font-weight: 900;
      color: var(--accent-green);
    }
    .trend-up {
      color: var(--accent-green);
      margin-left: 8px;
      font-size: 0.9rem;
    }
    @media (max-width: 768px) {
      .data-grid {
        grid-template-columns: 1fr;
      }
    }
    /* 服务矩阵 2x3 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--border-radius-card);
      padding: 32px 24px;
      transition: var(--transition);
    }
    .service-card i {
      font-size: 2.4rem;
      color: var(--accent-green);
      margin-bottom: 18px;
    }
    .service-card h3 {
      font-size: 22px;
      font-weight: 600;
      margin-bottom: 10px;
    }
    .service-card p {
      color: var(--secondary-text);
      margin-bottom: 18px;
    }
    .service-link {
      color: var(--accent-green);
      text-decoration: none;
      font-weight: 600;
    }
    .service-card:hover {
      border-color: var(--accent-green);
      box-shadow: var(--shadow-glow);
      transform: translateY(-5px);
    }
    @media (max-width: 1024px) {
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .services-grid {
        grid-template-columns: 1fr;
      }
    }
    /* 对比区 */
    .compare-row {
      display: flex;
      gap: 40px;
    }
    .compare-col {
      flex: 1;
      background: var(--card-bg);
      border-radius: var(--border-radius-card);
      padding: 40px;
      border: 1px solid var(--border-color);
    }
    .compare-col.right {
      background: #151e2b;
      border-left: 4px solid var(--accent-green);
    }
    .compare-col h3 {
      font-size: 26px;
      margin-bottom: 24px;
    }
    .compare-list {
      list-style: none;
    }
    .compare-list li {
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--secondary-text);
    }
    .right .compare-list li {
      color: var(--primary-text);
      font-weight: 500;
    }
    .right i {
      color: var(--accent-green);
    }
    @media (max-width: 768px) {
      .compare-row {
        flex-direction: column;
      }
    }
    /* 滚动卡片 */
    .scroll-container {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 16px;
      scrollbar-width: thin;
    }
    .honor-card {
      min-width: 240px;
      background: var(--card-bg);
      border-radius: var(--border-radius-card);
      padding: 24px;
      border: 1px solid var(--border-color);
    }
    .honor-card .value {
      font-family: var(--font-mono);
      font-size: 2.5rem;
      font-weight: 900;
      color: var(--accent-green);
    }
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid var(--border-color);
      padding: 20px 0;
    }
    .faq-question {
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--primary-text);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: var(--secondary-text);
      margin-top: 8px;
    }
    .faq-answer.open {
      max-height: 200px;
    }
    /* CTA */
    .cta-band {
      background: radial-gradient(circle at center, rgba(0,240,168,0.12) 0%, var(--deep-black) 70%);
      text-align: center;
    }
    .pulse-btn {
      animation: pulse 2s infinite;
      height: 56px;
      padding: 0 48px;
      font-size: 1.2rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(0,240,168,0.5); }
      70% { box-shadow: 0 0 0 15px rgba(0,240,168,0); }
      100% { box-shadow: 0 0 0 0 rgba(0,240,168,0); }
    }
    footer {
      background: #0A0E17;
      border-top: 1px solid var(--accent-green);
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
    }
    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }