/* roulang page: index */
:root {
      --primary: #C84B31;
      --primary-hover: #A33A25;
      --gold: #F3B33D;
      --gold-light: #FFD966;
      --dark-bg: #1C1A17;
      --light-bg: #FDF8F0;
      --card-bg: #FFF9F0;
      --card-border: #E8D5C4;
      --text-dark: #2C2416;
      --text-body: #4A3F32;
      --text-muted: #8C8279;
      --text-light: #D5C8B5;
      --radius-sm: 6px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --radius-xl: 40px;
      --shadow-card: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-card-hover: 0 8px 24px rgba(200,75,49,0.12);
      --font-serif: 'Noto Serif SC', serif;
      --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
      --font-number: 'Oswald', 'Inter', sans-serif;
      --transition: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--light-bg);
      color: var(--text-body);
      line-height: 1.6;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4 {
      font-family: var(--font-serif);
      color: var(--text-dark);
      margin-top: 0;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--primary-hover);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 浮动Dock导航 */
    .floating-nav {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: auto;
      max-width: 720px;
      background: rgba(28, 26, 23, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: var(--radius-xl);
      padding: 8px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 8px 20px rgba(0,0,0,0.25);
      z-index: 1000;
      gap: 20px;
      border: 1px solid rgba(232, 213, 196, 0.2);
    }
    .nav-logo {
      font-family: var(--font-sans);
      font-weight: 600;
      font-size: 1.25rem;
      color: var(--gold);
      white-space: nowrap;
      letter-spacing: 1px;
    }
    .nav-links {
      display: flex;
      gap: 24px;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-links a {
      color: #E0D7CC;
      font-weight: 500;
      font-size: 0.95rem;
      transition: var(--transition);
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--gold);
    }
    .nav-cta {
      background: var(--primary);
      color: white !important;
      padding: 8px 18px;
      border-radius: 40px;
      font-weight: 600;
      font-size: 0.9rem;
      white-space: nowrap;
      transition: var(--transition);
      border: none;
      cursor: pointer;
    }
    .nav-cta:hover {
      background: var(--primary-hover);
      transform: scale(1.02);
    }
    /* 移动端底部导航 */
    @media (max-width: 639px) {
      .floating-nav {
        top: auto;
        bottom: 12px;
        width: 92%;
        max-width: 100%;
        border-radius: 24px;
        padding: 6px 16px;
        gap: 8px;
      }
      .nav-links {
        gap: 12px;
      }
      .nav-links a {
        font-size: 0.8rem;
      }
      .nav-logo {
        font-size: 1rem;
      }
      .nav-cta {
        padding: 6px 14px;
        font-size: 0.8rem;
      }
    }
    /* Hero */
    .hero {
      background-color: var(--light-bg);
      padding: 140px 0 80px;
      position: relative;
      overflow: hidden;
    }
    .hero-content {
      display: flex;
      align-items: center;
      gap: 40px;
      flex-wrap: wrap;
    }
    .hero-text {
      flex: 1 1 400px;
    }
    .hero-text h1 {
      font-size: 2.8rem;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text-dark);
      margin-bottom: 20px;
    }
    .hero-text .subtitle {
      font-size: 1.2rem;
      color: var(--text-body);
      margin-bottom: 30px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--primary);
      color: white;
      border: none;
      padding: 14px 32px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 1rem;
      transition: var(--transition);
      display: inline-block;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      transform: scale(1.02);
      color: white;
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--primary);
      color: var(--primary);
      padding: 14px 32px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 1rem;
      transition: var(--transition);
      display: inline-block;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: white;
    }
    .hero-image {
      flex: 1 1 400px;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: var(--radius-lg);
      min-height: 320px;
      box-shadow: 0 12px 30px rgba(0,0,0,0.1);
      border: 1px solid var(--card-border);
    }
    @media (max-width: 768px) {
      .hero {
        padding: 120px 0 60px;
      }
      .hero-text h1 {
        font-size: 2.2rem;
      }
      .hero-image {
        min-height: 240px;
      }
    }
    /* 解决方案 */
    .solution {
      padding: 80px 0;
      background: #fff;
    }
    .solution-row {
      display: flex;
      align-items: center;
      gap: 48px;
      margin-bottom: 80px;
      flex-wrap: wrap;
    }
    .solution-img {
      flex: 1 1 350px;
      background: url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
      border-radius: var(--radius-lg);
      min-height: 300px;
      border: 1px solid var(--card-border);
    }
    .solution-text {
      flex: 1 1 400px;
      border-left: 4px solid var(--primary);
      padding-left: 24px;
    }
    .solution-text h3 {
      font-size: 1.8rem;
      margin-bottom: 12px;
    }
    .feature-list {
      list-style: none;
      padding: 0;
    }
    .feature-list li {
      margin-bottom: 10px;
      font-weight: 500;
      color: var(--text-dark);
    }
    .feature-list i {
      color: var(--primary);
      margin-right: 8px;
    }
    @media (max-width: 768px) {
      .solution-row {
        flex-direction: column;
      }
      .solution-text {
        border-left: none;
        padding-left: 0;
        border-top: 4px solid var(--primary);
        padding-top: 20px;
      }
    }
    /* 数据区 */
    .stats {
      background: var(--dark-bg);
      padding: 80px 0;
      color: var(--text-light);
    }
    .stats-grid {
      display: flex;
      justify-content: space-around;
      flex-wrap: wrap;
      text-align: center;
      gap: 30px;
    }
    .stat-item {
      flex: 1 1 200px;
    }
    .stat-number {
      font-family: var(--font-number);
      font-size: 4rem;
      font-weight: 700;
      color: var(--gold);
      line-height: 1.1;
    }
    .stat-label {
      font-size: 1.1rem;
      color: #D5C8B5;
      margin-top: 8px;
    }
    /* 证言 */
    .testimonials {
      padding: 80px 0;
      background: var(--light-bg);
    }
    .testimonial-grid {
      display: flex;
      gap: 28px;
      flex-wrap: wrap;
    }
    .testimonial-card {
      flex: 1 1 280px;
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .testimonial-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-card-hover);
    }
    .stars {
      color: var(--gold);
      margin-bottom: 12px;
    }
    .quote {
      font-style: italic;
      color: var(--text-body);
      margin-bottom: 20px;
      position: relative;
    }
    .user {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .avatar {
      width: 44px;
      height: 44px;
      background: #ddd;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: #555;
      background: #e0d7cc;
    }
    /* FAQ */
    .faq-section {
      padding: 80px 0;
      background: #fff;
    }
    .accordion {
      max-width: 800px;
      margin: 0 auto;
    }
    .accordion-item {
      border-bottom: 1px solid var(--card-border);
    }
    .accordion-title {
      background: #FDF8F0;
      padding: 20px;
      font-weight: 600;
      cursor: pointer;
      color: var(--text-dark);
      transition: var(--transition);
    }
    .accordion-title:hover {
      color: var(--primary);
    }
    .accordion-content {
      padding: 20px;
      background: white;
      color: var(--text-body);
    }
    /* CTA */
    .cta-final {
      background: var(--dark-bg);
      padding: 80px 0;
      text-align: center;
    }
    .cta-final h2 {
      color: white;
      font-size: 2.2rem;
    }
    .btn-gold {
      background: var(--gold);
      color: var(--dark-bg);
      border: none;
      padding: 16px 40px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 1.2rem;
      transition: var(--transition);
      display: inline-block;
      margin: 20px 0;
      position: relative;
      overflow: hidden;
    }
    .btn-gold:hover {
      background: #FFD966;
      color: #1C1A17;
    }
    .shimmer::after {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(120deg, transparent, rgba(255,255,255,0.4), transparent);
      transition: 0.6s;
    }
    .shimmer:hover::after {
      left: 100%;
    }
    .small-note {
      color: #aaa;
      font-size: 0.9rem;
    }
    /* Footer */
    .footer {
      background: #1C1A17;
      color: #8C8279;
      padding: 40px 0 20px;
    }
    .footer a {
      color: #ccc;
    }
    .footer a:hover {
      color: var(--gold);
    }
    .footer-grid {
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 30px;
    }
    .copyright {
      text-align: center;
      margin-top: 30px;
      font-size: 0.85rem;
    }