/* roulang page: index */
:root {
      --primary-deep: #2D2A26;
      --accent-warm: #C8A27A;
      --highlight-green: #4A7C59;
      --bg-warm: #FAF8F5;
      --bg-secondary: #F3EFE9;
      --text-soft: #6B6560;
      --border-light: #E8E3DC;
      --white: #FFFFFF;
      --radius-card: 12px;
      --radius-btn: 50px;
      --shadow-card: 0 2px 12px rgba(45, 42, 38, 0.06);
      --shadow-hover: 0 8px 24px rgba(45, 42, 38, 0.10);
      --font-sans: 'Inter', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --transition-base: 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--primary-deep);
      line-height: 1.7;
      margin: 0;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition-base);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container-custom {
      max-width: 1140px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 导航系统 */
    .navbar-main {
      background-color: var(--white);
      border-bottom: 1px solid var(--border-light);
      padding: 0;
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .nav-top-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 20px;
    }
    .logo-brand {
      font-weight: 700;
      font-size: 1.8rem;
      letter-spacing: 2px;
      color: var(--primary-deep);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo-brand i {
      color: var(--accent-warm);
      font-size: 1.8rem;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .search-icon {
      font-size: 1.2rem;
      color: var(--primary-deep);
      cursor: pointer;
    }
    .btn-nav-cta {
      background: var(--accent-warm);
      color: white;
      border-radius: var(--radius-btn);
      padding: 8px 22px;
      font-weight: 600;
      border: none;
      transition: background var(--transition-base);
      font-size: 0.9rem;
    }
    .btn-nav-cta:hover {
      background: #b08d65;
      color: white;
    }
    .channel-tabs {
      display: flex;
      gap: 6px;
      padding: 0 20px 12px;
      overflow-x: auto;
      white-space: nowrap;
      scrollbar-width: none;
      -ms-overflow-style: none;
      border-top: 1px solid var(--border-light);
      padding-top: 8px;
    }
    .channel-tabs::-webkit-scrollbar {
      display: none;
    }
    .tab-pill {
      background: transparent;
      color: var(--primary-deep);
      padding: 8px 20px;
      border-radius: 40px;
      font-weight: 500;
      transition: all var(--transition-base);
      font-size: 0.95rem;
      border-bottom: 2px solid transparent;
      cursor: pointer;
    }
    .tab-pill:hover {
      background: var(--bg-secondary);
    }
    .tab-pill.active {
      border-bottom: 2px solid var(--accent-warm);
      color: var(--accent-warm);
      font-weight: 600;
    }
    /* 区块间距 */
    section {
      padding: 80px 0;
    }
    @media (min-width: 992px) {
      section {
        padding: 120px 0;
      }
    }
    /* 标题层级 */
    h1 {
      font-size: 2rem;
      font-weight: 700;
      line-height: 1.2;
      letter-spacing: -0.5px;
    }
    h2 {
      font-size: 1.5rem;
      font-weight: 700;
      line-height: 1.3;
    }
    h3 {
      font-size: 1.25rem;
      font-weight: 600;
    }
    @media (min-width: 768px) {
      h1 { font-size: 3rem; }
      h2 { font-size: 2rem; }
    }
    .text-soft {
      color: var(--text-soft);
    }
    /* 按钮 */
    .btn-primary-milan {
      background: var(--accent-warm);
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 36px;
      font-weight: 600;
      border: none;
      transition: background var(--transition-base);
    }
    .btn-primary-milan:hover {
      background: #b08d65;
      color: white;
    }
    .btn-outline-milan {
      background: transparent;
      border: 2px solid var(--primary-deep);
      color: var(--primary-deep);
      border-radius: var(--radius-btn);
      padding: 12px 32px;
      font-weight: 600;
      transition: all var(--transition-base);
    }
    .btn-outline-milan:hover {
      background: var(--primary-deep);
      color: white;
    }
    .btn-light-outline {
      border: 2px solid white;
      color: white;
      background: transparent;
      border-radius: var(--radius-btn);
      padding: 12px 32px;
      font-weight: 600;
      transition: all var(--transition-base);
    }
    .btn-light-outline:hover {
      background: white;
      color: var(--primary-deep);
    }
    /* 卡片 */
    .card-milan {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: all var(--transition-base);
    }
    .card-milan:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .bg-secondary-soft {
      background: var(--bg-secondary);
    }
    /* Hero */
    .hero-image {
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      min-height: 320px;
      border-radius: var(--radius-card);
    }
    /* 痛点卡片 */
    .pain-large {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 32px;
    }
    .pain-small {
      border-left: 3px solid var(--accent-warm);
      padding-left: 20px;
      margin-bottom: 24px;
    }
    /* 解决方案虚线 */
    .service-item {
      border-bottom: 1px dashed var(--border-light);
      padding: 20px 0;
    }
    .service-item:last-child {
      border-bottom: none;
    }
    /* 数据指标 */
    .metric-number {
      font-size: 3rem;
      font-weight: 700;
      color: var(--highlight-green);
      line-height: 1.2;
    }
    /* 证言网格 */
    .testimonial-card {
      position: relative;
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 32px;
    }
    .quote-mark {
      position: absolute;
      top: 10px;
      left: 20px;
      font-size: 4rem;
      color: var(--accent-warm);
      opacity: 0.2;
      line-height: 1;
    }
    .avatar-placeholder {
      width: 60px;
      height: 60px;
      background: #ddd;
      border-radius: 50%;
    }
    /* FAQ 手风琴覆盖 */
    .accordion-button {
      background: var(--bg-warm);
      color: var(--primary-deep);
      font-weight: 600;
      box-shadow: none;
      border-bottom: 1px solid var(--border-light);
      padding: 20px 0;
    }
    .accordion-button:not(.collapsed) {
      background: var(--bg-secondary);
      color: var(--primary-deep);
      box-shadow: none;
    }
    .accordion-button::after {
      font-family: "Font Awesome 6 Free";
      content: "\2b";
      background-image: none;
      font-weight: 900;
      color: var(--accent-warm);
      transition: transform 0.2s;
    }
    .accordion-button:not(.collapsed)::after {
      content: "\f068";
      transform: rotate(0);
    }
    .accordion-item {
      border: none;
      background: transparent;
    }
    .accordion-body {
      padding: 16px 0 24px;
      color: var(--text-soft);
    }
    /* 深色 CTA */
    .dark-cta {
      background: var(--primary-deep);
      color: white;
      border-radius: 0;
    }
    .dark-cta .text-muted-soft {
      color: #C8C4BF;
    }
    /* 页脚 */
    .footer-main {
      background: var(--primary-deep);
      color: white;
      padding: 60px 0 30px;
    }
    .footer-link {
      color: var(--text-soft);
      transition: color var(--transition-base);
    }
    .footer-link:hover {
      color: var(--accent-warm);
    }
    @media (max-width: 767px) {
      .nav-top-row {
        padding: 10px 16px;
      }
      .channel-tabs {
        padding: 0 16px 10px;
      }
    }