/* roulang page: index */
:root {
      --primary-cyan: #00E5FF;
      --accent-gold: #FFB800;
      --deep-bg: #0B0C10;
      --card-bg: rgba(20, 20, 40, 0.85);
      --card-solid: #1E1E32;
      --border-glow: rgba(0, 229, 255, 0.18);
      --text-main: #E0E0E0;
      --text-muted: #9E9E9E;
      --success-green: #00C853;
      --radius-card: 14px;
      --radius-btn: 10px;
      --radius-pill: 30px;
      --shadow-glow: 0 10px 32px rgba(0, 229, 255, 0.15);
      --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-data: 'Inter', 'SF Pro Display', sans-serif;
    }

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

    body {
      font-family: var(--font-heading);
      background: radial-gradient(circle at 20% 10%, #1a1a2e 0%, #0B0C10 85%);
      color: var(--text-main);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      scroll-behavior: smooth;
    }

    .container {
      max-width: 1300px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 悬浮胶囊导航 */
    .nav-capsule {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      width: auto;
      max-width: 95%;
      background: rgba(8, 8, 18, 0.8);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-radius: var(--radius-pill);
      padding: 0.6rem 2rem;
      z-index: 99;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border: 1px solid rgba(0, 229, 255, 0.15);
      box-shadow: 0 12px 28px rgba(0,0,0,0.5);
    }

    .logo-text {
      font-size: 1.5rem;
      font-weight: 700;
      color: white;
      letter-spacing: 1px;
      background: linear-gradient(135deg, #fff 0%, var(--primary-cyan) 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-right: 2rem;
    }

    .nav-links {
      display: flex;
      gap: 1.8rem;
      align-items: center;
    }

    .nav-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: 0.2s;
      padding-bottom: 4px;
      border-bottom: 2px solid transparent;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-cyan);
      border-bottom-color: var(--primary-cyan);
    }

    .hamburger {
      display: none;
      font-size: 1.6rem;
      color: var(--primary-cyan);
      cursor: pointer;
    }

    /* 移动端菜单 */
    .mobile-menu {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(5, 5, 15, 0.95);
      backdrop-filter: blur(20px);
      z-index: 100;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 2.5rem;
    }

    .mobile-menu a {
      color: white;
      font-size: 1.6rem;
      font-weight: 600;
      text-decoration: none;
    }

    .close-menu {
      position: absolute;
      top: 30px;
      right: 30px;
      font-size: 2rem;
      color: var(--primary-cyan);
    }

    /* Hero */
    #hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: linear-gradient(125deg, rgba(11,12,16,0.7) 0%, rgba(20,20,40,0.55) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      position: relative;
      padding: 120px 0 80px;
    }

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

    .hero-left {
      flex: 1 1 500px;
    }

    .hero-right {
      flex: 1 1 360px;
      background: rgba(15, 15, 30, 0.7);
      backdrop-filter: blur(12px);
      border-radius: 24px;
      padding: 2rem;
      border: 1px solid var(--border-glow);
    }

    h1 {
      font-size: clamp(2.5rem, 5vw, 3.8rem);
      font-weight: 700;
      line-height: 1.2;
      color: white;
      margin-bottom: 1.2rem;
    }

    .hero-sub {
      font-size: 1.25rem;
      color: var(--text-muted);
      margin-bottom: 2rem;
    }

    .btn-primary {
      background: var(--primary-cyan);
      color: #0B0C10;
      font-weight: 700;
      padding: 0.9rem 2.2rem;
      border-radius: var(--radius-btn);
      border: none;
      font-size: 1rem;
      letter-spacing: 0.5px;
      transition: 0.25s;
      display: inline-block;
      text-decoration: none;
      box-shadow: 0 4px 16px rgba(0,229,255,0.3);
    }

    .btn-primary:hover {
      background: #33EAFF;
      box-shadow: 0 0 24px rgba(0,229,255,0.7);
      color: #000;
    }

    .stat-mini {
      display: flex;
      justify-content: space-between;
      margin: 1.4rem 0;
    }

    .stat-digit {
      font-family: var(--font-data);
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--accent-gold);
    }

    /* 通用板块 */
    section {
      padding: 80px 0;
    }

    h2 {
      font-size: 2.3rem;
      font-weight: 650;
      margin-bottom: 2.5rem;
      color: white;
      position: relative;
      display: inline-block;
    }

    h2:after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -10px;
      width: 60px;
      height: 3px;
      background: var(--primary-cyan);
    }

    .stats-row {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      justify-content: space-between;
    }

    .stat-card {
      background: var(--card-bg);
      backdrop-filter: blur(8px);
      padding: 2rem;
      border-radius: var(--radius-card);
      flex: 1 1 200px;
      border: 1px solid var(--border-glow);
      text-align: center;
    }

    .big-number {
      font-family: var(--font-data);
      font-size: 3.4rem;
      font-weight: 800;
      color: var(--primary-cyan);
    }

    /* 服务体系 masonry风格 */
    .services-masonry {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 28px;
    }

    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid rgba(0,229,255,0.1);
      transition: 0.25s;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-glow);
      border-color: var(--primary-cyan);
    }

    .card-img {
      height: 160px;
      background-size: cover;
      background-position: center;
    }

    .card-content {
      padding: 1.8rem;
    }

    .card-content i {
      color: var(--primary-cyan);
      font-size: 1.8rem;
      margin-bottom: 0.8rem;
    }

    /* 案例对比 */
    .case-panel {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      background: rgba(20,20,40,0.7);
      border-radius: 20px;
      padding: 2rem;
      margin-bottom: 2rem;
    }

    .progress-bar {
      height: 10px;
      background: #2a2a40;
      border-radius: 10px;
      margin: 1rem 0;
      width: 100%;
    }

    .fill-gold {
      height: 10px;
      background: var(--accent-gold);
      border-radius: 10px;
      width: 67%;
      box-shadow: 0 0 12px #ffb800;
    }

    /* FAQ */
    .accordion-item {
      border-bottom: 1px solid rgba(255,255,255,0.06);
      padding: 1.2rem 0;
    }

    .accordion-title {
      font-weight: 700;
      font-size: 1.2rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }

    /* CTA表单 */
    .cta-block {
      background: #12122a;
      border-radius: 28px;
      padding: 3rem;
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
    }

    input, textarea {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: 8px;
      padding: 0.8rem;
      color: white;
      width: 100%;
    }

    .btn-gold {
      background: var(--accent-gold);
      color: #000;
      font-weight: bold;
      border: none;
      border-radius: 10px;
      padding: 0.9rem 2rem;
    }

    footer {
      background: #0a0a14;
      padding: 3rem 0 1.5rem;
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .hero-grid { flex-direction: column; }
      .services-masonry { grid-template-columns: 1fr; }
    }