/* roulang page: index */
:root {
      --primary: #0A0F1E;
      --accent-gold: #C9A84C;
      --accent-gold-light: #E0C87A;
      --accent-blue: #1A3A5C;
      --bg-deep: #0D1525;
      --text-primary: #FFFFFF;
      --text-body: #B0B8C5;
      --text-muted: #7A8290;
      --glass-bg: rgba(26, 58, 92, 0.25);
      --glass-border: rgba(201, 168, 76, 0.15);
      --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
      --radius-card: 16px;
      --radius-btn: 12px;
      --radius-input: 10px;
      --radius-icon: 8px;
      --space-section: 100px;
      --container-max: 1200px;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      transition: all 0.2s ease;
    }

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

    body {
      font-family: var(--font-sans);
      background: linear-gradient(135deg, #0A0F1E 0%, #0D1525 100%);
      color: var(--text-body);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s, opacity 0.2s;
    }

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }

    h1, h2, h3 {
      font-weight: 600;
    }

    h1 {
      font-size: 48px;
      line-height: 1.2;
      letter-spacing: -0.5px;
      background: linear-gradient(180deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      font-weight: 700;
    }

    h2 {
      font-size: 36px;
      line-height: 1.25;
      color: var(--text-primary);
      margin-bottom: 16px;
    }

    h3 {
      font-size: 22px;
      line-height: 1.4;
      color: #E8E8E8;
      margin-bottom: 12px;
    }

    .section {
      padding: var(--space-section) 0;
    }

    /* 玻璃拟态卡片基础 */
    .glass-card {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      box-shadow: var(--card-shadow);
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.2s;
    }

    .glass-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 36px rgba(0,0,0,0.5), 0 0 20px rgba(201,168,76,0.15);
      border-color: rgba(201,168,76,0.3);
    }

    /* 导航 */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(10, 15, 30, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(201,168,76,0.2);
    }

    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 20px;
      font-weight: 600;
      color: var(--accent-gold);
    }

    .logo-icon {
      font-size: 28px;
      filter: drop-shadow(0 0 6px rgba(201,168,76,0.5));
    }

    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }

    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-body);
      padding: 6px 0;
      position: relative;
      transition: color 0.2s;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-gold);
      transition: width 0.25s ease;
    }

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

    .nav-links a:hover::after {
      width: 100%;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      z-index: 1001;
    }

    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--accent-gold);
      transition: 0.3s;
    }

    .mobile-menu {
      display: none;
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }

    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(10,15,30,0.85) 0%, rgba(10,15,30,0.4) 100%);
      z-index: 1;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 650px;
      text-align: left;
    }

    .hero h1 {
      margin-bottom: 24px;
    }

    .hero-subtitle {
      font-size: 18px;
      line-height: 1.6;
      color: var(--text-body);
      margin-bottom: 36px;
    }

    .btn-group {
      display: flex;
      align-items: center;
      gap: 24px;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, #C9A84C 0%, #E0C87A 100%);
      color: #0A0F1E;
      font-weight: 600;
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      font-size: 16px;
      transition: all 0.3s ease;
      box-shadow: 0 4px 15px rgba(201,168,76,0.3);
      display: inline-block;
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 24px rgba(201,168,76,0.6);
    }

    .link-gold {
      color: var(--accent-gold);
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: opacity 0.2s;
    }

    .link-gold:hover {
      text-decoration: underline;
      opacity: 0.9;
    }

    /* 痛点区 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 40px;
    }

    .pain-item {
      background: rgba(26,58,92,0.2);
      border-left: 4px solid var(--accent-gold);
      padding: 24px;
      border-radius: 8px;
      backdrop-filter: blur(8px);
    }

    .pain-number {
      font-size: 28px;
      font-weight: 700;
      color: var(--accent-gold);
      margin-bottom: 8px;
    }

    /* 解决方案卡片 */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-top: 48px;
    }

    .solution-card {
      padding: 32px;
      display: flex;
      flex-direction: column;
    }

    .card-icon {
      width: 64px;
      height: 64px;
      background: rgba(201,168,76,0.1);
      border-radius: var(--radius-icon);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 24px;
      font-size: 32px;
    }

    .card-icon img {
      width: 40px;
      height: 40px;
      object-fit: contain;
    }

    .solution-card p {
      margin-bottom: 24px;
      flex: 1;
    }

    /* 数据区 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      margin-top: 40px;
    }

    .stat-item {
      text-align: center;
      padding: 24px;
      background: rgba(26,58,92,0.15);
      border-radius: var(--radius-card);
      backdrop-filter: blur(8px);
    }

    .stat-number {
      font-size: 48px;
      font-weight: 700;
      color: var(--accent-gold);
      line-height: 1.2;
    }

    .stat-label {
      font-size: 14px;
      color: var(--text-muted);
      margin-top: 8px;
    }

    /* 证言 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
      margin-top: 48px;
    }

    .testimonial-card {
      padding: 32px;
      display: flex;
      gap: 20px;
      align-items: flex-start;
    }

    .avatar {
      width: 48px;
      height: 48px;
      background: #2A3A50;
      border-radius: 50%;
      flex-shrink: 0;
      background-image: url('/assets/images/coverpic/cover-3.webp');
      background-size: cover;
    }

    .quote {
      font-style: italic;
      color: #ddd;
      margin-bottom: 16px;
      position: relative;
      padding-left: 20px;
    }

    .quote::before {
      content: "“";
      font-size: 32px;
      color: var(--accent-gold);
      position: absolute;
      left: 0;
      top: -8px;
    }

    /* FAQ */
    .faq-list {
      margin-top: 40px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      border-bottom: 1px solid rgba(201,168,76,0.2);
      padding-bottom: 16px;
    }

    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 18px;
      font-weight: 600;
      color: #E8E8E8;
      padding: 8px 0;
      text-align: left;
      transition: color 0.2s;
    }

    .faq-question:hover {
      color: var(--accent-gold);
    }

    .faq-icon {
      font-size: 20px;
      color: var(--accent-gold);
      font-weight: 300;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      color: var(--text-body);
      font-size: 16px;
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-top: 12px;
    }

    /* CTA */
    .cta-section {
      background: rgba(10,15,30,0.6);
      backdrop-filter: blur(8px);
      text-align: center;
      padding: 80px 0;
      position: relative;
    }

    .cta-section h2 {
      margin-bottom: 16px;
    }

    /* 联系表单 */
    .contact-form {
      display: grid;
      grid-template-columns: 1fr;
      gap: 20px;
      max-width: 560px;
      margin: 32px auto 0;
    }

    .form-input {
      background: rgba(10,15,30,0.7);
      border: 1px solid #2A3A50;
      border-radius: var(--radius-input);
      padding: 14px 18px;
      color: white;
      font-size: 16px;
      transition: border 0.2s;
    }

    .form-input:focus {
      outline: none;
      border-color: var(--accent-gold);
    }

    /* 页脚 */
    .footer {
      background: #080C17;
      border-top: 1px solid rgba(201,168,76,0.25);
      padding: 48px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 30px;
    }

    .footer-logo {
      font-size: 22px;
      font-weight: 700;
      color: var(--accent-gold);
      margin-bottom: 12px;
    }

    .footer-desc {
      font-size: 14px;
      color: var(--text-muted);
    }

    .footer h4 {
      color: white;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: var(--text-body);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: var(--accent-gold);
    }

    .copyright {
      margin-top: 32px;
      text-align: center;
      font-size: 14px;
      color: var(--text-muted);
    }

    @media (max-width: 1024px) {
      .cards-grid, .pain-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .testimonials-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      h1 { font-size: 32px; }
      h2 { font-size: 28px; }
      .section { padding: 60px 0; }
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .mobile-menu {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(10,15,30,0.95);
        backdrop-filter: blur(20px);
        z-index: 999;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 32px;
      }
      .mobile-menu.active {
        display: flex;
      }
      .mobile-menu a {
        font-size: 20px;
        color: white;
      }
      .cards-grid, .pain-grid, .stats-grid {
        grid-template-columns: 1fr;
      }
      .hero-content {
        text-align: center;
        margin: 0 auto;
      }
      .btn-group {
        justify-content: center;
      }
    }