/* roulang page: index */
:root {
      --deep-blue: #0F1F3A;
      --sand-gold: #C9A96E;
      --sand-gold-deep: #B28A4A;
      --warm-white: #FAF8F5;
      --pure-white: #FFFFFF;
      --text-primary: #1E1E1E;
      --text-secondary: #5A5A5A;
      --text-muted: #8A8A8A;
      --border-soft: #E8E0D5;
      --malachite-green: #2E8B6B;
      --card-shadow: 0 2px 12px rgba(15, 31, 58, 0.06);
      --card-shadow-hover: 0 8px 24px rgba(15, 31, 58, 0.12);
      --radius-card: 12px;
      --radius-btn: 6px;
      --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      --transition-smooth: 0.25s ease;
    }

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

    body {
      font-family: var(--font-body);
      background-color: var(--warm-white);
      color: var(--text-primary);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-heading);
      font-weight: 700;
      letter-spacing: 0.02em;
    }

    a {
      color: var(--sand-gold);
      text-decoration: none;
      transition: color var(--transition-smooth);
    }
    a:hover {
      color: var(--sand-gold-deep);
    }

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 导航分屏联动 */
    .nav-container {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 64px;
      background: rgba(250, 248, 245, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-soft);
      z-index: 100;
      display: flex;
      align-items: center;
      padding: 0 20px;
      box-shadow: 0 1px 8px rgba(15,31,58,0.04);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .logo-text {
      font-size: 22px;
      font-weight: 700;
      color: var(--deep-blue);
      letter-spacing: 1px;
    }
    .logo-text span {
      color: var(--sand-gold);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-primary);
      padding: 4px 0;
      border-bottom: 2px solid transparent;
      transition: color 0.2s, border-color 0.2s;
    }
    .nav-links a:hover {
      color: var(--sand-gold);
      border-bottom-color: var(--sand-gold);
    }
    .nav-cta {
      background: transparent;
      border: 1.5px solid var(--sand-gold);
      color: var(--sand-gold);
      padding: 8px 18px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 14px;
      transition: all 0.3s;
      white-space: nowrap;
    }
    .nav-cta:hover {
      background: var(--sand-gold);
      color: white;
      border-color: var(--sand-gold);
    }

    .hamburger {
      display: none;
      font-size: 24px;
      color: var(--sand-gold);
      cursor: pointer;
      background: none;
      border: none;
    }

    /* Hero 分屏 */
    #hero {
      padding-top: 64px;
      min-height: 90vh;
      display: flex;
      align-items: center;
      background: var(--warm-white);
    }
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 40px;
      width: 100%;
    }
    .hero-left {
      flex: 1 1 50%;
      padding-right: 20px;
    }
    .hero-right {
      flex: 1 1 50%;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 20px 35px rgba(15,31,58,0.1);
      background: #f0ede6;
    }
    .hero-right img {
      width: 100%;
      height: auto;
      object-fit: cover;
      display: block;
    }
    h1 {
      font-size: 42px;
      color: var(--deep-blue);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .hero-sub {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 14px;
    }
    .pain-point-hint {
      font-size: 14px;
      color: var(--text-muted);
      border-left: 4px solid var(--sand-gold);
      padding-left: 16px;
      margin-bottom: 28px;
      font-style: italic;
    }
    .btn-primary {
      background: var(--sand-gold);
      color: white;
      border: none;
      padding: 14px 32px;
      border-radius: 30px;
      font-weight: 700;
      font-size: 16px;
      display: inline-block;
      transition: background 0.3s, transform 0.2s;
      box-shadow: 0 4px 10px rgba(201,169,110,0.3);
      text-decoration: none;
      margin-right: 16px;
    }
    .btn-primary:hover {
      background: var(--sand-gold-deep);
      transform: scale(1.03);
      color: white;
    }
    .btn-ghost {
      background: transparent;
      border: 1.5px solid var(--sand-gold);
      color: var(--sand-gold);
      padding: 12px 28px;
      border-radius: 30px;
      font-weight: 600;
      transition: 0.3s;
      display: inline-block;
      text-decoration: none;
    }
    .btn-ghost:hover {
      background: rgba(201,169,110,0.08);
      color: var(--sand-gold-deep);
    }

    section {
      padding: 80px 0;
    }

    .section-title {
      font-size: 32px;
      color: var(--deep-blue);
      margin-bottom: 24px;
      position: relative;
      display: inline-block;
    }
    .section-title::after {
      content: '';
      display: block;
      width: 60px;
      height: 4px;
      background: var(--sand-gold);
      margin-top: 12px;
      border-radius: 2px;
    }

    .pain-card {
      background: #F4F1EB;
      border-radius: var(--radius-card);
      padding: 28px 24px;
      display: flex;
      gap: 20px;
      align-items: flex-start;
      transition: all 0.3s;
      border: 1px solid transparent;
    }
    .pain-card:hover {
      background: white;
      box-shadow: var(--card-shadow);
      border-color: var(--border-soft);
    }
    .pain-icon {
      width: 56px;
      height: 56px;
      background: rgba(201,169,110,0.15);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: var(--deep-blue);
      flex-shrink: 0;
    }

    .solution-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 32px 24px;
      box-shadow: var(--card-shadow);
      text-align: center;
      transition: all 0.3s ease;
      height: 100%;
      border: 1px solid var(--border-soft);
    }
    .solution-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--card-shadow-hover);
    }
    .solution-icon {
      font-size: 36px;
      color: var(--sand-gold);
      margin-bottom: 16px;
    }

    .stat-number {
      font-size: 48px;
      font-weight: 700;
      color: var(--deep-blue);
      line-height: 1.2;
    }
    .stat-underline {
      width: 40px;
      height: 4px;
      background: var(--sand-gold);
      margin: 10px 0 8px;
    }

    .testimonial-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 28px;
      display: flex;
      gap: 20px;
      align-items: flex-start;
      border-left: 5px solid var(--sand-gold);
      box-shadow: var(--card-shadow);
    }
    .avatar {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: #ddd;
      flex-shrink: 0;
      background-image: url('/assets/images/coverpic/cover-3.webp');
      background-size: cover;
    }

    .accordion-title {
      font-size: 18px;
      font-weight: 600;
      background: transparent;
      border: none;
      color: var(--deep-blue);
      padding: 16px 0;
    }
    .accordion-content {
      color: var(--text-secondary);
      padding-bottom: 14px;
    }

    .contact-section {
      background: var(--deep-blue);
      color: white;
      padding: 70px 0;
    }
    .contact-section h2 {
      color: white;
    }
    .form-input {
      background: white;
      border: 1px solid #ccc;
      padding: 12px;
      border-radius: 6px;
      width: 100%;
      margin-bottom: 16px;
      color: var(--text-primary);
    }

    .footer {
      background: #1A1A1A;
      color: #B0B0B0;
      padding: 50px 0 20px;
      font-size: 14px;
    }
    .footer a {
      color: #B0B0B0;
    }
    .footer a:hover {
      color: var(--sand-gold);
    }

    @media (max-width: 1024px) {
      h1 { font-size: 32px; }
      .hero-grid { gap: 20px; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .hero-grid {
        flex-direction: column;
        text-align: center;
      }
      .hero-left { padding-right: 0; }
      h1 { font-size: 28px; }
      .section-title { font-size: 26px; }
      .pain-card { flex-direction: column; }
      .testimonial-card { flex-direction: column; }
    }
    .mobile-menu {
      display: none;
      flex-direction: column;
      background: white;
      position: absolute;
      top: 64px;
      left: 0;
      width: 100%;
      padding: 20px;
      box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    }
    .mobile-menu a {
      display: block;
      padding: 12px 0;
      border-bottom: 1px solid #eee;
    }