/* roulang page: index */
:root {
      --deep-space-ink: #0B1A2E;
      --deep-space-ink-light: #132438;
      --stellar-gold: #C9A96E;
      --stellar-gold-hover: #B38B4A;
      --warm-white: #F7F5F0;
      --card-bg: #FFFFFF;
      --text-primary: #1E2B3C;
      --text-secondary: #4A5568;
      --text-muted: #6B7B8D;
      --border-gold-subtle: rgba(201,169,110,0.2);
      --border-gold-light: rgba(201,169,110,0.08);
      --shadow-card: 0 8px 24px rgba(11,26,46,0.06);
      --shadow-card-hover: 0 16px 32px rgba(11,26,46,0.12);
      --radius-card: 16px;
      --radius-button: 30px;
      --radius-input: 10px;
      --transition-smooth: all 0.25s ease;
      --font-serif: 'Noto Serif SC', 'Times New Roman', serif;
      --font-sans: 'Noto Sans SC', 'Inter', system-ui, -apple-system, sans-serif;
      --font-mono: 'DIN Alternate', 'Courier New', monospace;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--warm-white);
      color: var(--text-primary);
      line-height: 1.7;
      font-weight: 400;
      -webkit-font-smoothing: antialiased;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 悬浮胶囊导航 */
    .galaxy-nav {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      width: auto;
      max-width: 90%;
      background: rgba(11, 26, 46, 0.85);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-radius: 40px;
      padding: 10px 28px;
      z-index: 50;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 10px 25px -8px rgba(11,26,46,0.3);
      border: 1px solid rgba(201,169,110,0.2);
    }

    .logo-text {
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 1.4rem;
      color: #fff;
      letter-spacing: 2px;
      margin-right: 24px;
      white-space: nowrap;
    }
    .logo-text i {
      color: var(--stellar-gold);
      margin-right: 6px;
    }

    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }

    .nav-links a {
      color: rgba(255,255,255,0.9);
      font-weight: 500;
      font-size: 0.95rem;
      letter-spacing: 0.5px;
      transition: var(--transition-smooth);
      position: relative;
      padding: 4px 0;
    }

    .nav-links a:hover {
      color: var(--stellar-gold);
    }

    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--stellar-gold);
      border-radius: 2px;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: white;
      font-size: 1.6rem;
      cursor: pointer;
    }

    /* 移动端导航 */
    @media (max-width: 768px) {
      .galaxy-nav {
        padding: 8px 20px;
        justify-content: space-between;
      }
      .nav-links {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .logo-text {
        font-size: 1.2rem;
      }
    }

    .mobile-menu {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(11,26,46,0.96);
      backdrop-filter: blur(20px);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 32px;
      z-index: 60;
      transform: translateX(100%);
      transition: transform 0.3s ease;
    }
    .mobile-menu.open {
      transform: translateX(0);
    }
    .mobile-menu a {
      color: white;
      font-size: 1.8rem;
      font-weight: 500;
    }
    .close-menu {
      position: absolute;
      top: 24px;
      right: 24px;
      background: none;
      border: none;
      color: white;
      font-size: 2rem;
    }

    /* Hero */
    #home {
      background: linear-gradient(135deg, #0B1A2E 0%, #132438 100%);
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
      padding: 120px 0 80px;
    }
    .hero-bg {
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity: 0.25;
      mix-blend-mode: overlay;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 40px;
    }
    .hero-left {
      flex: 1 1 50%;
    }
    .hero-right {
      flex: 1 1 40%;
      display: flex;
      justify-content: center;
    }
    .hero-right .star-orbit {
      width: 320px;
      height: 320px;
      border: 1px dashed rgba(201,169,110,0.3);
      border-radius: 50%;
      position: relative;
      animation: spin 30s linear infinite;
    }
    @keyframes spin { 100% { transform: rotate(360deg); } }
    .hero-right .planet {
      position: absolute;
      top: -10px;
      left: 50%;
      width: 12px;
      height: 12px;
      background: var(--stellar-gold);
      border-radius: 50%;
      box-shadow: 0 0 20px var(--stellar-gold);
    }

    h1 {
      font-family: var(--font-serif);
      font-size: 3rem;
      font-weight: 700;
      color: white;
      line-height: 1.3;
      margin-bottom: 20px;
    }
    .hero-sub {
      font-size: 1.2rem;
      color: rgba(255,255,240,0.8);
      margin-bottom: 32px;
      max-width: 500px;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn {
      display: inline-block;
      padding: 14px 32px;
      border-radius: var(--radius-button);
      font-weight: 600;
      letter-spacing: 0.8px;
      transition: var(--transition-smooth);
      text-align: center;
    }
    .btn-primary {
      background: var(--stellar-gold);
      color: #0B1A2E;
      border: none;
    }
    .btn-primary:hover {
      background: var(--stellar-gold-hover);
      transform: translateY(-2px);
    }
    .btn-ghost {
      border: 1px solid var(--stellar-gold);
      color: var(--stellar-gold);
      background: transparent;
    }
    .btn-ghost:hover {
      background: var(--stellar-gold);
      color: #0B1A2E;
    }

    section {
      padding: 80px 0;
    }
    .section-title {
      font-family: var(--font-serif);
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--deep-space-ink);
      margin-bottom: 12px;
    }
    .section-sub {
      color: var(--text-muted);
      font-size: 1.1rem;
      margin-bottom: 48px;
    }

    /* 服务区块非对称布局 */
    .services-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 24px;
    }
    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 28px;
      border: 1px solid var(--border-gold-light);
      transition: var(--transition-smooth);
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      box-shadow: var(--shadow-card-hover);
      border-color: var(--stellar-gold);
    }
    .service-icon {
      font-size: 2.4rem;
      color: var(--stellar-gold);
      margin-bottom: 16px;
    }
    .service-card h3 {
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 1.5rem;
    }

    .advantages-wall {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
    }
    .stat-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 32px;
      flex: 1 1 200px;
      text-align: center;
      border: 1px solid var(--border-gold-light);
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 3.4rem;
      color: var(--stellar-gold);
      font-weight: 700;
    }

    .case-row {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
    }
    .case-item {
      flex: 1 1 45%;
      background: var(--deep-space-ink);
      border-radius: var(--radius-card);
      overflow: hidden;
      position: relative;
    }
    .case-img {
      height: 240px;
      background-size: cover;
      background-position: center;
    }
    .case-tag {
      position: absolute;
      bottom: 20px;
      left: 20px;
      color: white;
      font-weight: 600;
      background: rgba(0,0,0,0.6);
      padding: 6px 16px;
      border-radius: 20px;
    }

    .faq-item {
      border-bottom: 1px solid var(--border-gold-subtle);
    }
    .faq-question {
      background: none;
      border: none;
      width: 100%;
      text-align: left;
      padding: 20px 0;
      font-weight: 600;
      font-size: 1.1rem;
      display: flex;
      justify-content: space-between;
      color: var(--deep-space-ink);
    }

    footer {
      background: var(--deep-space-ink);
      color: #ccc;
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
    }

    @media (max-width: 1024px) {
      .services-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      h1 { font-size: 2.2rem; }
      .services-grid, .case-row { grid-template-columns: 1fr; }
      .hero-content { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr; }
    }