/* roulang page: index */
:root {
      --color-primary: #8B3A3A;
      --color-primary-deep: #6B2A2A;
      --color-accent: #C49A6C;
      --color-accent-hover: #A0783C;
      --color-bg: #F5F0EB;
      --color-bg-alt: #EDE8E2;
      --color-text-dark: #2C2416;
      --color-text-muted: #7B6E5E;
      --color-white: #FFFFFF;
      --color-green: #5B7B4B;
      --font-sans: 'Noto Sans SC', 'Inter', system-ui, -apple-system, sans-serif;
      --font-number: 'Inter', 'Noto Sans SC', sans-serif;
      --shadow-card: 0 10px 25px -8px rgba(44, 36, 22, 0.08), 0 4px 8px -4px rgba(44, 36, 22, 0.04);
      --shadow-card-hover: 0 20px 30px -12px rgba(44, 36, 22, 0.12), 0 8px 15px -6px rgba(44, 36, 22, 0.06);
      --radius-xl: 1rem;
      --radius-2xl: 1.5rem;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--color-bg);
      color: var(--color-text-dark);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, input, textarea {
      font-family: inherit;
    }

    .container-main {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    @media (min-width: 768px) {
      .container-main {
        padding-left: 2.5rem;
        padding-right: 2.5rem;
      }
    }

    /* 导航样式 */
    .nav-blur {
      backdrop-filter: blur(12px);
      background-color: rgba(255, 255, 255, 0.9);
      box-shadow: 0 4px 15px rgba(44, 36, 22, 0.04);
    }

    .channel-pill {
      border-radius: 9999px;
      padding: 0.5rem 1.25rem;
      font-weight: 500;
      font-size: 0.95rem;
      transition: all 0.25s ease;
      white-space: nowrap;
      color: var(--color-text-dark);
      background: transparent;
    }

    .channel-pill:hover {
      color: var(--color-accent);
      background: rgba(196, 154, 108, 0.08);
    }

    .channel-pill.active {
      background: var(--color-accent);
      color: white;
      box-shadow: 0 6px 14px rgba(196, 154, 108, 0.3);
    }

    .btn-primary {
      background: var(--color-accent);
      color: white;
      border-radius: 2.5rem;
      padding: 0.75rem 2rem;
      font-weight: 600;
      letter-spacing: 0.02em;
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: none;
      cursor: pointer;
      box-shadow: 0 8px 18px rgba(196, 154, 108, 0.25);
    }

    .btn-primary:hover {
      background: var(--color-accent-hover);
      box-shadow: 0 12px 22px rgba(160, 120, 60, 0.3);
      transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--color-accent);
      color: var(--color-text-dark);
      border-radius: 2.5rem;
      padding: 0.7rem 2rem;
      font-weight: 600;
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }

    .btn-outline:hover {
      background: rgba(196, 154, 108, 0.08);
      border-color: var(--color-accent-hover);
      color: var(--color-accent-hover);
    }

    /* 卡片样式 */
    .card-elevated {
      background: var(--color-white);
      border-radius: var(--radius-2xl);
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
    }

    .card-elevated:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-6px);
    }

    /* 手风琴样式 */
    details.faq-item {
      background: var(--color-white);
      border-radius: 1rem;
      margin-bottom: 1rem;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
    }

    details.faq-item summary {
      padding: 1.25rem 2rem;
      font-weight: 600;
      font-size: 1.1rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      color: var(--color-text-dark);
      transition: color 0.2s;
    }

    details.faq-item summary::-webkit-details-marker {
      display: none;
    }

    details.faq-item[open] summary {
      color: var(--color-accent);
    }

    .faq-answer {
      padding: 0 2rem 1.5rem 2rem;
      color: var(--color-text-muted);
      line-height: 1.7;
    }

    .icon-accent-bg {
      background-color: var(--color-accent);
      width: 52px;
      height: 52px;
      border-radius: 1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
    }

    /* 数字强调 */
    .stat-number {
      font-family: var(--font-number);
      font-weight: 800;
      color: var(--color-accent);
      line-height: 1.2;
    }

    /* 分隔装饰 */
    .divider-dot {
      width: 6px;
      height: 6px;
      background: var(--color-accent);
      border-radius: 50%;
      display: inline-block;
      margin: 0 1rem;
      opacity: 0.6;
    }