/* roulang page: index */
:root {
      --deep-space: #0f0c1a;
      --dark-purple: #1a0f2e;
      --card-bg: #2a2340;
      --gold: #d4a853;
      --gold-light: #e0b963;
      --gold-glow: rgba(212,168,83,0.35);
      --nebula: #6b4c8a;
      --silver: #b8b8c8;
      --text-dim: #8a8a9a;
      --footer-bg: #0a0812;
      --border-light: rgba(184,184,200,0.2);
      --radius-card: 16px;
      --radius-btn: 10px;
      --shadow-card: 0 10px 30px rgba(0,0,0,0.45);
      --transition: all 0.3s ease;
      --container-max: 1200px;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      background-color: var(--deep-space);
      color: #e0e0e0;
      line-height: 1.7;
      scroll-behavior: smooth;
    }
    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 标题字体 */
    h1, h2, h3, .serif-font {
      font-family: 'Noto Serif SC', 'ZCOOL XiaoWei', serif;
      font-weight: 700;
    }
    .data-number {
      font-family: 'Oswald', 'DIN Alternate', sans-serif;
      font-weight: 700;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      display: block;
    }

    /* 导航栏 */
    .main-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: rgba(15, 12, 26, 0.92);
      backdrop-filter: blur(12px);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 1000;
      border-bottom: 1px solid rgba(212,168,83,0.15);
      padding: 0 24px;
    }
    .nav-container {
      max-width: var(--container-max);
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 1.7rem;
      font-weight: 700;
      color: var(--gold);
      letter-spacing: 2px;
      font-family: 'Noto Serif SC', serif;
    }
    .logo i {
      font-size: 2rem;
      color: var(--gold-light);
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
      font-weight: 500;
      color: var(--silver);
      font-size: 0.95rem;
    }
    .nav-links a:hover {
      color: var(--gold);
      text-decoration: underline;
      text-underline-offset: 6px;
    }
    .nav-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .search-icon {
      color: var(--silver);
      font-size: 1.2rem;
      cursor: pointer;
    }
    .search-icon:hover {
      color: var(--gold);
    }
    .login-link {
      color: var(--silver);
      font-weight: 500;
      font-size: 0.95rem;
    }
    .btn-gold {
      background: var(--gold);
      color: #1a0f2e;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      font-size: 0.9rem;
      letter-spacing: 0.5px;
      transition: var(--transition);
      border: none;
      cursor: pointer;
      display: inline-block;
    }
    .btn-gold:hover {
      background: var(--gold-light);
      box-shadow: 0 0 15px var(--gold-glow);
      color: #0f0c1a;
    }
    .btn-outline-gold {
      background: transparent;
      border: 1.5px solid var(--gold);
      color: var(--gold);
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: var(--transition);
    }
    .btn-outline-gold:hover {
      background: rgba(212,168,83,0.1);
      border-color: var(--gold-light);
      color: var(--gold-light);
    }
    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: var(--gold);
      cursor: pointer;
    }
    @media (max-width: 1024px) {
      .nav-links, .nav-right .login-link {
        display: none;
      }
      .hamburger {
        display: block;
      }
      .nav-right {
        gap: 16px;
      }
    }

    /* 板块通用 */
    section {
      padding: 100px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 70px 0;
      }
    }

    /* Hero */
    .hero {
      min-height: 90vh;
      display: flex;
      align-items: center;
      background: linear-gradient(135deg, #0f0c1a 0%, #1a0f2e 60%, #2a1a3a 100%);
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
      position: relative;
    }
    .hero-content {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 50px;
      width: 100%;
    }
    .hero-text {
      flex: 1 1 500px;
    }
    .hero-text h1 {
      font-size: 4rem;
      line-height: 1.2;
      color: white;
      margin-bottom: 20px;
    }
    .hero-text h1 span {
      color: var(--gold);
    }
    .hero-sub {
      font-size: 1.25rem;
      color: var(--silver);
      margin-bottom: 35px;
    }
    .hero-buttons {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .data-panel {
      flex: 1 1 400px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .data-card {
      background: rgba(42,35,64,0.7);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(212,168,83,0.25);
      border-radius: var(--radius-card);
      padding: 24px;
      text-align: center;
    }
    .data-number {
      font-size: 2.6rem;
      color: var(--gold);
      letter-spacing: 1px;
    }
    .data-label {
      color: var(--silver);
      font-size: 0.9rem;
    }

    /* 服务矩阵 */
    .services {
      background-color: #0f0c1a;
    }
    .section-title {
      font-size: 2.8rem;
      color: white;
      margin-bottom: 16px;
      text-align: center;
    }
    .section-sub {
      color: var(--silver);
      text-align: center;
      margin-bottom: 60px;
    }
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      border: 1px solid rgba(212,168,83,0.15);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .service-card:hover {
      transform: translateY(-8px);
      border-color: var(--gold);
      box-shadow: 0 20px 40px rgba(0,0,0,0.6);
    }
    .service-icon {
      font-size: 2.4rem;
      color: var(--gold);
      margin-bottom: 20px;
    }
    .service-card h3 {
      font-size: 1.7rem;
      color: white;
      margin-bottom: 12px;
    }
    .service-card p {
      color: var(--silver);
      margin-bottom: 20px;
    }
    .learn-more {
      color: var(--gold);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 对比滑块区 */
    .compare {
      background: #1a0f2e;
    }
    .compare-wrapper {
      display: flex;
      align-items: center;
      gap: 30px;
      flex-wrap: wrap;
    }
    .compare-box {
      flex: 1;
      background: #2a2340;
      border-radius: var(--radius-card);
      padding: 32px;
      border: 1px solid transparent;
    }
    .compare-box.galaxy {
      border-color: var(--gold);
      background: #2f2645;
    }
    .compare-box h4 {
      font-size: 1.8rem;
      margin-bottom: 20px;
    }
    .compare-item {
      display: flex;
      justify-content: space-between;
      margin-bottom: 16px;
      font-size: 1.1rem;
    }
    .vs-badge {
      font-size: 2rem;
      font-weight: 700;
      color: var(--gold);
    }

    /* FAQ */
    .faq {
      background: #0f0c1a;
    }
    .accordion {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      border-bottom: 1px solid var(--border-light);
    }
    .faq-question {
      width: 100%;
      background: transparent;
      border: none;
      color: white;
      font-size: 1.2rem;
      font-weight: 600;
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
      text-align: left;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      background: #2a2340;
      border-radius: 8px;
      padding: 0 20px;
      margin-bottom: 10px;
    }
    .faq-answer p {
      padding: 18px 0;
      color: var(--silver);
    }

    /* 表单 */
    .cta-form {
      background: linear-gradient(135deg, #1a0f2e, #2a1a3a);
    }
    .form-card {
      max-width: 650px;
      margin: 0 auto;
      background: #2a2340;
      border-radius: 24px;
      padding: 48px;
    }
    .form-input {
      width: 100%;
      padding: 14px 18px;
      background: #1a0f2e;
      border: 1px solid rgba(184,184,200,0.3);
      border-radius: 8px;
      color: white;
      margin-bottom: 20px;
    }
    .form-input:focus {
      border-color: var(--gold);
      box-shadow: 0 0 0 3px var(--gold-glow);
    }

    /* 页脚 */
    .footer {
      background: #0a0812;
      padding: 60px 0 20px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
    }
    .copyright {
      text-align: center;
      margin-top: 40px;
      color: #6b6b7a;
    }
    @media (max-width: 768px) {
      .footer-grid { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: 1fr; }
      .hero-text h1 { font-size: 2.8rem; }
      .data-panel { grid-template-columns: 1fr; }
    }