/* roulang page: index */
:root {
      --primary: #E8A850;
      --primary-dark: #C4882E;
      --secondary: #2D2A26;
      --accent: #D94E3C;
      --bg: #FAF7F2;
      --card-bg: #FFFFFF;
      --text: #1E1C19;
      --text-soft: #5C5853;
      --border-light: rgba(0,0,0,0.04);
      --shadow-card: 0 2px 12px rgba(0,0,0,0.04);
      --shadow-hover: 0 8px 28px rgba(0,0,0,0.08);
      --radius-xl: 16px;
      --radius-card: 12px;
      --radius-btn: 8px;
      --font-title: -0.02em;
    }

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

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.75;
      font-weight: 400;
      font-size: 16px;
      scroll-behavior: smooth;
    }

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

    /* 导航 */
    .nav-bar {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(250,247,242,0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0,0,0,0.05);
      transition: background 0.25s ease;
    }
    .nav-bar.scrolled {
      background: rgba(250,247,242,0.98);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
    }
    .nav-left, .nav-right {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    .nav-left a, .nav-right a {
      color: var(--text);
      text-decoration: none;
      font-weight: 500;
      font-size: 15px;
      position: relative;
      transition: color 0.2s;
    }
    .nav-left a:hover, .nav-right a:hover {
      color: var(--primary-dark);
    }
    .nav-left a.active, .nav-right a.active {
      color: var(--primary-dark);
      font-weight: 600;
    }
    .nav-left a.active::after, .nav-right a.active::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .nav-logo {
      font-size: 22px;
      font-weight: 700;
      letter-spacing: 0.02em;
      color: var(--secondary);
      white-space: nowrap;
    }
    .nav-logo span {
      color: var(--primary-dark);
    }
    .hamburger {
      display: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--secondary);
    }
    .mobile-menu {
      display: none;
      position: fixed;
      top: 68px;
      left: 0;
      width: 100%;
      background: var(--bg);
      border-bottom: 1px solid var(--border-light);
      padding: 20px;
      flex-direction: column;
      gap: 16px;
      z-index: 99;
      box-shadow: 0 8px 20px rgba(0,0,0,0.06);
    }
    .mobile-menu a {
      font-size: 18px;
      color: var(--text);
      text-decoration: none;
      font-weight: 500;
    }

    /* 通用板块 */
    section {
      padding: 100px 0;
    }
    .section-title {
      text-align: center;
      font-size: 36px;
      font-weight: 700;
      letter-spacing: var(--font-title);
      color: var(--secondary);
      margin-bottom: 48px;
    }
    .section-sub {
      text-align: center;
      color: var(--text-soft);
      max-width: 700px;
      margin: -30px auto 48px;
    }

    /* Hero */
    #hero {
      background: linear-gradient(135deg, #FAF7F2 0%, #FDF3E2 100%);
      padding: 80px 0 100px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .hero-text h1 {
      font-size: 42px;
      font-weight: 700;
      letter-spacing: var(--font-title);
      color: var(--secondary);
      line-height: 1.3;
      margin-bottom: 20px;
    }
    .hero-text p {
      font-size: 17px;
      color: var(--text-soft);
      margin-bottom: 28px;
      line-height: 1.7;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: white;
      border: none;
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 16px;
      cursor: pointer;
      transition: 0.25s ease;
      display: inline-block;
      text-decoration: none;
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-dark), #B07A25);
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(200,140,40,0.3);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary-dark);
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      text-decoration: none;
      transition: 0.25s;
    }
    .btn-outline:hover {
      background: rgba(232,168,80,0.08);
    }
    .hero-image img {
      width: 100%;
      border-radius: 24px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    }

    /* 卡片网格 */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .card-xl {
      background: var(--card-bg);
      border-radius: var(--radius-xl);
      padding: 32px 28px;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-light);
      transition: 0.25s ease;
      position: relative;
      overflow: hidden;
    }
    .card-xl:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-top: 3px solid var(--primary);
    }
    .card-xl h3 {
      font-size: 22px;
      font-weight: 600;
      margin: 20px 0 12px;
      color: var(--secondary);
    }
    .card-xl p {
      color: var(--text-soft);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .card-xl .card-link {
      color: var(--primary-dark);
      font-weight: 600;
      text-decoration: none;
    }
    .icon-circle {
      width: 52px;
      height: 52px;
      background: rgba(232,168,80,0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      font-size: 24px;
    }
    .badge-accent {
      position: absolute;
      top: 20px;
      right: 20px;
      background: var(--accent);
      color: white;
      font-size: 13px;
      padding: 4px 12px;
      border-radius: 20px;
      font-weight: 600;
    }

    /* 优势数据 */
    .stats-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
      margin-top: 24px;
    }
    .stat-item .stat-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1.2;
    }
    .stat-item .stat-label {
      font-size: 15px;
      color: var(--text-soft);
      margin-top: 8px;
    }

    /* 证言横向滚动 */
    .testimonial-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      padding-bottom: 20px;
      -webkit-overflow-scrolling: touch;
    }
    .testimonial-card {
      flex: 0 0 calc(33.333% - 16px);
      min-width: 280px;
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--shadow-card);
      scroll-snap-align: start;
      font-style: italic;
    }
    .testimonial-card .quote-icon {
      color: var(--primary);
      font-size: 28px;
      margin-bottom: 12px;
    }
    .testimonial-author {
      margin-top: 20px;
      font-style: normal;
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 600;
    }
    .avatar-placeholder {
      width: 40px;
      height: 40px;
      background: var(--primary);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    /* FAQ */
    .accordion-item {
      margin-bottom: 12px;
      border-radius: var(--radius-btn);
      overflow: hidden;
      box-shadow: 0 1px 4px rgba(0,0,0,0.02);
    }
    .accordion-title {
      background: var(--card-bg);
      padding: 18px 24px;
      font-weight: 600;
      cursor: pointer;
      border-left: 3px solid transparent;
      transition: 0.2s;
    }
    .accordion-title.active {
      border-left: 3px solid var(--primary);
      background: #FFF9EF;
    }
    .accordion-content {
      padding: 0 24px 18px;
      color: var(--text-soft);
      display: none;
    }

    /* CTA 终局 */
    #cta {
      background: rgba(232,168,80,0.08);
      text-align: center;
      border-radius: 32px;
      margin: 60px 20px;
    }
    .cta-inner {
      padding: 60px 20px;
    }
    .trust-text {
      color: var(--text-soft);
      margin: 16px 0 12px;
    }

    /* Footer */
    #footer {
      background: var(--secondary);
      color: #EAE6E0;
      padding: 60px 0 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
    }
    .footer-logo {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .footer-links a {
      color: #ccc;
      text-decoration: none;
      display: block;
      margin-bottom: 8px;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .copyright {
      border-top: 1px solid rgba(255,255,255,0.1);
      margin-top: 40px;
      padding-top: 20px;
      text-align: center;
      font-size: 14px;
      color: #aaa;
    }

    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .card-grid { grid-template-columns: repeat(2,1fr); }
      .stats-row { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .nav-left, .nav-right { display: none; }
      .hamburger { display: block; }
      .mobile-menu.open { display: flex; }
      .card-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .section-title { font-size: 28px; }
      .hero-text h1 { font-size: 32px; }
      .testimonial-card { flex: 0 0 85%; }
    }