/* roulang page: index */
:root {
      --gold: #D4AF37;
      --gold-light: #F5D061;
      --gold-dark: #C99700;
      --red: #E63946;
      --grey-dark: #1E1E2A;
      --grey-deep: #0F0F17;
      --grey-mid: #2A2A3C;
      --white: #FFFFFF;
      --off-white: #F8F9FA;
      --text-dark: #1A1A1A;
      --text-body: #4A4A4A;
      --text-muted: #6B6B6B;
      --radius-sm: 12px;
      --radius-md: 16px;
      --radius-pill: 30px;
      --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
      --shadow-hover: 0 12px 32px rgba(0,0,0,0.12);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-en: "Inter", "Poppins", sans-serif;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-cn);
      color: var(--text-dark);
      background-color: var(--white);
      line-height: 1.5;
      -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 20px;
    }
    @media (max-width: 768px) {
      .container {
        padding: 0 16px;
      }
    }

    /* 导航栏 - 资讯门户吸顶风格 */
    .main-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(15, 15, 23, 0.95);
      backdrop-filter: blur(12px);
      box-shadow: 0 2px 12px rgba(0,0,0,0.3);
    }
    .brand-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      padding: 0 20px;
    }
    .logo {
      font-size: 28px;
      font-weight: 800;
      background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: -0.5px;
      font-family: var(--font-en);
    }
    .brand-actions {
      display: flex;
      align-items: center;
      gap: 24px;
    }
    .live-badge {
      display: flex;
      align-items: center;
      gap: 6px;
      background: rgba(230, 57, 70, 0.15);
      padding: 6px 16px;
      border-radius: 20px;
      color: var(--red);
      font-weight: 600;
      font-size: 14px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--red);
      border-radius: 50%;
      display: inline-block;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(230,57,70,0.7); }
      70% { box-shadow: 0 0 0 8px rgba(230,57,70,0); }
      100% { box-shadow: 0 0 0 0 rgba(230,57,70,0); }
    }
    .search-icon {
      font-size: 20px;
      color: var(--white);
      cursor: pointer;
      transition: var(--transition);
    }
    .search-icon:hover {
      color: var(--gold);
    }
    .channel-row {
      background: #161622;
      height: 48px;
      display: flex;
      align-items: center;
      overflow-x: auto;
      white-space: nowrap;
      padding: 0 20px;
    }
    .channel-row a {
      color: #ccc;
      font-size: 14px;
      font-weight: 500;
      margin-right: 32px;
      transition: var(--transition);
      position: relative;
      padding-bottom: 4px;
    }
    .channel-row a:hover,
    .channel-row a.active {
      color: var(--gold);
    }
    .channel-row a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--gold);
      transition: width 0.3s;
    }
    .channel-row a:hover::after,
    .channel-row a.active::after {
      width: 100%;
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      color: white;
      font-size: 28px;
      cursor: pointer;
    }
    @media (max-width: 768px) {
      .channel-row { display: none; }
      .mobile-menu-btn { display: block; }
      .brand-actions .search-icon { display: none; }
    }
    .mobile-nav {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      width: 100%;
      background: rgba(15,15,23,0.98);
      backdrop-filter: blur(20px);
      flex-direction: column;
      padding: 32px 20px;
      z-index: 999;
    }
    .mobile-nav.open {
      display: flex;
    }
    .mobile-nav a {
      color: white;
      padding: 16px 0;
      font-size: 18px;
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    /* Hero */
    .hero {
      background: linear-gradient(135deg, #0F0F17 0%, #1E1E2A 50%, #2A2A3C 100%);
      position: relative;
      overflow: hidden;
      padding: 80px 0;
      display: flex;
      align-items: center;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at 30% 40%, rgba(212,175,55,0.12) 0%, transparent 50%);
    }
    .hero-content {
      display: flex;
      align-items: center;
      gap: 60px;
      position: relative;
      z-index: 2;
    }
    .hero-text {
      flex: 1 1 50%;
    }
    .hero h1 {
      font-size: 48px;
      font-weight: 800;
      color: white;
      line-height: 1.2;
      letter-spacing: -0.5px;
      margin-bottom: 24px;
    }
    .hero h1 span {
      background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-sub {
      color: rgba(255,255,255,0.85);
      font-size: 18px;
      margin-bottom: 40px;
      max-width: 500px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
      color: #0F0F17;
      padding: 14px 36px;
      border-radius: var(--radius-pill);
      font-weight: 700;
      border: none;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 4px 14px rgba(212,175,55,0.3);
    }
    .btn-primary:hover {
      box-shadow: 0 8px 20px rgba(212,175,55,0.5);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid white;
      color: white;
      padding: 14px 36px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-outline:hover {
      border-color: var(--gold);
      color: var(--gold);
      transform: translateY(-2px);
    }
    .hero-visual {
      flex: 1 1 50%;
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }
    .hero-visual img {
      width: 100%;
      height: auto;
      object-fit: cover;
      border-radius: 24px;
    }
    @media (max-width: 768px) {
      .hero-content {
        flex-direction: column;
        text-align: center;
      }
      .hero h1 {
        font-size: 32px;
      }
      .hero-sub {
        margin-left: auto;
        margin-right: auto;
      }
      .hero-buttons {
        justify-content: center;
      }
    }

    section {
      padding: 100px 0;
    }
    @media (max-width: 768px) {
      section { padding: 60px 0; }
    }
    .section-title {
      text-align: center;
      margin-bottom: 60px;
    }
    .section-title h2 {
      font-size: 36px;
      font-weight: 700;
      color: var(--text-dark);
    }
    .gold-line {
      width: 60px;
      height: 3px;
      background: linear-gradient(90deg, var(--gold-light), var(--gold-dark));
      margin: 16px auto 0;
    }

    /* 服务区混合布局 */
    .features-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }
    .big-cards {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .feature-card {
      background: white;
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      display: flex;
      gap: 24px;
      align-items: center;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .feature-icon {
      font-size: 48px;
      color: var(--gold);
    }
    .vertical-list {
      background: white;
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .list-item {
      display: flex;
      align-items: center;
      gap: 16px;
      font-weight: 500;
    }
    .list-item i {
      color: var(--gold);
      font-size: 18px;
    }
    @media (max-width: 768px) {
      .features-grid {
        grid-template-columns: 1fr;
      }
      .feature-card {
        flex-direction: column;
      }
    }

    /* 数据徽章区 */
    .stats-section {
      background: #1E1E2A;
      background-image: radial-gradient(circle at 20% 30%, rgba(212,175,55,0.05) 0%, transparent 40%);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .stat-item {
      background: rgba(30,30,42,0.8);
      border: 1px solid rgba(212,175,55,0.25);
      border-radius: var(--radius-md);
      padding: 32px 16px;
      backdrop-filter: blur(6px);
    }
    .stat-number {
      font-size: 48px;
      font-weight: 800;
      color: var(--gold);
      font-family: var(--font-en);
    }
    .stat-label {
      color: white;
      font-size: 14px;
      margin-top: 12px;
    }
    @media (max-width: 768px) {
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    /* 横向滚动案例 */
    .cases-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 20px;
      scrollbar-width: thin;
    }
    .case-card {
      min-width: 340px;
      background: white;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .case-card:hover {
      transform: translateY(-6px);
    }
    .case-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: 16px 16px 0 0;
    }
    .case-content {
      padding: 20px;
    }
    .case-content h4 {
      font-weight: 700;
      margin-bottom: 8px;
    }
    .gold-link {
      color: var(--gold-dark);
      font-weight: 600;
      cursor: default;
    }

    /* 步骤流程 */
    .steps {
      display: flex;
      justify-content: space-between;
      text-align: center;
    }
    .step {
      flex: 1;
      position: relative;
    }
    .step-circle {
      width: 56px;
      height: 56px;
      background: var(--gold);
      border-radius: 50%;
      margin: 0 auto 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: #0F0F17;
      font-size: 24px;
    }
    @media (max-width: 768px) {
      .steps {
        flex-direction: column;
        gap: 40px;
      }
    }

    /* FAQ */
    .faq-item {
      background: #F8F9FA;
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      overflow: hidden;
      border-left: 4px solid var(--gold);
    }
    .faq-question {
      padding: 20px 24px;
      font-weight: 700;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
      background: white;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      background: white;
      color: var(--text-body);
      padding: 0 24px;
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
      padding: 20px 24px;
    }

    /* CTA */
    .cta-section {
      background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
      text-align: center;
      border-radius: 32px;
      margin: 0 20px;
    }
    .cta-section h2 {
      color: #0F0F17;
      font-weight: 800;
    }
    .email-input {
      padding: 14px 24px;
      border-radius: 30px;
      border: none;
      width: 280px;
      max-width: 100%;
      margin-right: 12px;
    }

    footer {
      background: #0F0F17;
      color: #6B6B6B;
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
    }
    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }