/* roulang page: index */
:root {
      --bs-primary: #B8863C;
      --bs-secondary: #8B3A3A;
      --bs-body-bg: #FAF8F5;
      --bs-body-color: #4A4540;
      --bs-font-sans-serif: 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
      --bs-font-serif: 'Noto Serif SC', Georgia, 'Times New Roman', serif;
      --ink-dark: #1C1914;
      --bronze: #B8863C;
      --bronze-deep: #9A6D2F;
      --bronze-hover: #8B5E2A;
      --vermillion: #8B3A3A;
      --warm-white: #F5F0EA;
      --soft-gray: #8A8278;
      --card-bg: #FFFFFF;
      --border-light: #E5E0D8;
      --shadow-sm: 0 2px 16px rgba(28, 25, 20, 0.06);
      --shadow-hover: 0 8px 32px rgba(28, 25, 20, 0.10);
      --transition-base: all 0.25s ease;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--bs-font-sans-serif);
      background-color: var(--bs-body-bg);
      color: var(--bs-body-color);
      font-weight: 300;
      line-height: 1.8;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4, .serif {
      font-family: var(--bs-font-serif);
      font-weight: 600;
      color: var(--ink-dark);
      letter-spacing: 0.02em;
    }

    a {
      text-decoration: none;
      transition: var(--transition-base);
      color: var(--bronze);
    }

    a:hover {
      color: var(--bronze-deep);
    }

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

    .container-custom {
      width: 100%;
      padding-right: 16px;
      padding-left: 16px;
      margin-right: auto;
      margin-left: auto;
    }

    @media (min-width: 576px) {
      .container-custom {
        max-width: 540px;
      }
    }
    @media (min-width: 768px) {
      .container-custom {
        max-width: 720px;
      }
    }
    @media (min-width: 992px) {
      .container-custom {
        max-width: 960px;
      }
    }
    @media (min-width: 1200px) {
      .container-custom {
        max-width: 1140px;
      }
    }
    @media (min-width: 1400px) {
      .container-custom {
        max-width: 1320px;
      }
    }

    /* 导航栏重写 */
    .navbar {
      background-color: rgba(250, 248, 245, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      min-height: 72px;
      padding: 0;
    }
    .navbar-brand {
      font-family: var(--bs-font-serif);
      font-weight: 700;
      font-size: 22px;
      letter-spacing: 0.06em;
      color: var(--bronze) !important;
      padding: 0;
    }
    .navbar .nav-link {
      font-size: 14px;
      font-weight: 400;
      color: #4A4540 !important;
      margin-left: 36px;
      padding: 0 0 4px 0;
      position: relative;
      letter-spacing: 0.02em;
    }
    .navbar .nav-link.active,
    .navbar .nav-link:hover {
      color: var(--bronze) !important;
    }
    .navbar .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 8px;
      height: 2px;
      border-radius: 1px;
      background-color: var(--bronze);
    }
    .navbar-toggler {
      border: none;
      padding: 0;
      box-shadow: none;
    }
    .navbar-toggler-icon {
      background-image: none;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      width: 24px;
      height: 24px;
      position: relative;
    }
    .navbar-toggler-icon::before,
    .navbar-toggler-icon::after,
    .navbar-toggler-icon span {
      content: '';
      display: block;
      height: 2px;
      background-color: var(--bronze);
      border-radius: 1px;
      transition: var(--transition-base);
    }
    .navbar-toggler-icon::before { width: 20px; margin-bottom: 5px; }
    .navbar-toggler-icon span { width: 16px; margin-bottom: 5px; }
    .navbar-toggler-icon::after { width: 20px; }
    @media (max-width: 767.98px) {
      .navbar-collapse {
        background-color: var(--ink-dark);
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        height: calc(100vh - 72px);
        padding: 40px 32px;
        z-index: 1050;
      }
      .navbar .nav-link {
        color: var(--warm-white) !important;
        font-size: 18px;
        margin: 0 0 32px 0;
        display: block;
        text-align: center;
        font-weight: 300;
      }
      .navbar .nav-link.active,
      .navbar .nav-link:hover {
        color: var(--bronze) !important;
      }
    }

    /* 按钮重写 */
    .btn {
      border-radius: 4px;
      font-weight: 600;
      font-size: 15px;
      letter-spacing: 0.05em;
      padding: 14px 36px;
      transition: var(--transition-base);
      border: 1.5px solid transparent;
    }
    .btn-primary {
      background: linear-gradient(135deg, #B8863C 0%, #9A6D2F 100%);
      border-color: transparent;
      color: var(--warm-white);
    }
    .btn-primary:hover, .btn-primary:focus {
      background: #8B5E2A;
      border-color: transparent;
      box-shadow: inset 0 2px 8px rgba(0,0,0,0.2);
      color: white;
    }
    .btn-outline-bronze {
      background: transparent;
      border: 1.5px solid var(--bronze);
      color: var(--bronze);
    }
    .btn-outline-bronze:hover {
      background: rgba(184, 134, 60, 0.1);
      border-color: var(--bronze);
      color: var(--bronze-deep);
    }
    .btn-lg {
      padding: 18px 48px;
      font-size: 16px;
    }

    /* 卡片重写 */
    .card {
      background: var(--card-bg);
      border: none;
      border-radius: 8px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-base);
    }
    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border: 1px solid rgba(184, 134, 60, 0.3);
    }
    .card-img-top {
      border-top-left-radius: 8px;
      border-top-right-radius: 8px;
      border-bottom-left-radius: 0;
      border-bottom-right-radius: 0;
      aspect-ratio: 16 / 9;
      object-fit: cover;
    }
    .card-body {
      padding: 32px;
    }

    /* 手风琴重写 */
    .accordion-button {
      background-color: #FAF8F5;
      color: var(--ink-dark);
      font-weight: 500;
      font-size: 17px;
      padding: 20px 24px;
      border: none;
      box-shadow: none;
      border-left: 2px solid var(--bronze);
      border-radius: 0 !important;
    }
    .accordion-button:not(.collapsed) {
      background-color: #F0ECE6;
      color: var(--ink-dark);
      box-shadow: none;
    }
    .accordion-button::after {
      background-image: none;
      content: '+';
      font-size: 24px;
      font-weight: 300;
      color: var(--bronze);
      display: flex;
      align-items: center;
      justify-content: center;
      width: 24px;
      height: 24px;
    }
    .accordion-button:not(.collapsed)::after {
      content: '−';
    }
    .accordion-body {
      background: white;
      padding: 20px 24px;
      color: #4A4540;
      line-height: 1.9;
    }

    /* 自定义区块间距 */
    section {
      padding: 100px 0;
    }
    @media (max-width: 767.98px) {
      section {
        padding: 70px 0;
      }
    }

    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: linear-gradient(0deg, rgba(28,25,20,0.65) 0%, rgba(28,25,20,0.2) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      color: var(--warm-white);
    }
    .hero h1 {
      font-size: 56px;
      font-weight: 700;
      line-height: 1.15;
      max-width: 680px;
      color: white;
    }
    .hero .lead {
      font-weight: 300;
      font-size: 18px;
      opacity: 0.9;
      margin-top: 24px;
    }
    @media (max-width: 767.98px) {
      .hero h1 { font-size: 38px; }
      .hero .lead { font-size: 16px; }
    }

    .text-bronze { color: var(--bronze); }
    .bg-ink { background-color: var(--ink-dark); }
    .decorative-line {
      width: 40px;
      height: 1px;
      background-color: var(--bronze);
      margin-bottom: 16px;
    }

    .testimonial-card {
      background: white;
      border-radius: 8px;
      padding: 32px;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .testimonial-card .quote-mark {
      font-family: var(--bs-font-serif);
      font-size: 64px;
      color: var(--bronze);
      opacity: 0.2;
      line-height: 0.6;
      margin-bottom: 16px;
    }

    .pricing-card {
      background: white;
      border-radius: 8px;
      padding: 40px 32px;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .pricing-card.recommended {
      border: 1px solid var(--bronze);
    }
    .badge-recommend {
      background: rgba(139, 58, 58, 0.1);
      color: var(--vermillion);
      font-size: 13px;
      font-weight: 500;
      padding: 4px 12px;
      border-radius: 4px;
    }

    footer {
      background: var(--ink-dark);
      color: var(--warm-white);
      padding: 40px 0;
      font-size: 14px;
    }