/* roulang page: index */
:root {
      --primary-deep: #1A1A2E;
      --accent-gold: #C9A96E;
      --highlight-gold: #D4AF37;
      --bg-warm: #F8F6F2;
      --dark-bg: #0F0F1A;
      --text-main: #2C2C2C;
      --text-heading: #1A1A2E;
      --text-muted: #5A5A5A;
      --success-green: #2D6A4F;
      --border-light: #E8E2D8;
      --card-bg: #FFFFFF;
      --shadow-sm: 0 4px 20px rgba(26, 26, 46, 0.06);
      --shadow-hover: 0 8px 30px rgba(26, 26, 46, 0.12);
      --radius-card: 8px;
      --radius-btn: 6px;
      --radius-input: 4px;
      --font-serif: 'Noto Serif SC', serif;
      --font-sans: 'Noto Sans SC', 'Inter', sans-serif;
      --transition-base: 0.25s ease;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-main);
      line-height: 1.8;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4, .serif {
      font-family: var(--font-serif);
      color: var(--text-heading);
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-base);
    }
    img {
      max-width: 100%;
      height: auto;
    }
    .section-padding {
      padding: 120px 0;
    }
    @media (max-width: 768px) {
      .section-padding {
        padding: 80px 0;
      }
    }
    /* 导航 */
    .navbar-custom {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      height: 72px;
      border-bottom: 1px solid var(--border-light);
      box-shadow: 0 2px 10px rgba(0,0,0,0.02);
    }
    .navbar-brand {
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 24px;
      color: var(--primary-deep) !important;
      letter-spacing: 0.5px;
    }
    .brand-icon {
      color: var(--accent-gold);
      font-size: 22px;
      margin-left: 2px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-heading) !important;
      margin: 0 6px;
      padding: 8px 12px !important;
      position: relative;
    }
    .nav-link.active {
      color: var(--accent-gold) !important;
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 12px;
      right: 12px;
      height: 2px;
      background: var(--accent-gold);
    }
    .btn-primary-custom {
      background: var(--accent-gold);
      border: none;
      color: var(--primary-deep);
      font-weight: 600;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      transition: var(--transition-base);
    }
    .btn-primary-custom:hover {
      background: #b8914a;
      color: var(--primary-deep);
    }
    .btn-outline-gold {
      background: transparent;
      border: 2px solid var(--accent-gold);
      color: var(--accent-gold);
      font-weight: 600;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
    }
    .btn-outline-gold:hover {
      background: var(--accent-gold);
      color: var(--primary-deep);
    }
    .btn-ghost {
      background: transparent;
      border: 2px solid var(--highlight-gold);
      color: var(--highlight-gold);
      font-weight: 600;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
    }
    .btn-ghost:hover {
      background: var(--highlight-gold);
      color: var(--dark-bg);
    }
    /* Hero */
    .hero-section {
      background: var(--dark-bg);
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
    }
    .hero-bg-pattern {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.25;
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      width: 100%;
    }
    .hero-title {
      font-size: 42px;
      font-weight: 700;
      letter-spacing: 0.02em;
      line-height: 1.2;
      color: #FFFFFF;
    }
    .hero-sub {
      font-size: 18px;
      font-weight: 300;
      color: rgba(255,255,255,0.8);
      max-width: 600px;
      margin: 24px 0 32px;
    }
    .scroll-indicator {
      position: absolute;
      bottom: 30px;
      left: 50%;
      transform: translateX(-50%);
      color: var(--accent-gold);
      font-size: 28px;
      animation: pulse 2s infinite;
      z-index: 2;
    }
    @keyframes pulse {
      0% { opacity: 0.6; transform: translateX(-50%) translateY(0); }
      50% { opacity: 1; transform: translateX(-50%) translateY(8px); }
      100% { opacity: 0.6; transform: translateX(-50%) translateY(0); }
    }
    /* 标题装饰 */
    .section-title {
      font-size: 32px;
      font-weight: 600;
      margin-bottom: 16px;
      position: relative;
      display: inline-block;
    }
    .section-title::after {
      content: '';
      display: block;
      width: 40px;
      height: 2px;
      background: var(--accent-gold);
      margin-top: 12px;
    }
    .card-custom {
      background: var(--card-bg);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      transition: var(--transition-base);
    }
    .card-custom:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--accent-gold);
    }
    .icon-gold {
      color: var(--accent-gold);
      font-size: 2.2rem;
    }
    .service-img {
      border-radius: var(--radius-card);
      border: 1px solid var(--accent-gold);
    }
    .scenario-card {
      border-left: 4px solid var(--accent-gold);
      padding-left: 24px;
    }
    .tag-badge {
      background: #F0EBE1;
      color: var(--primary-deep);
      border-radius: 20px;
      padding: 4px 14px;
      font-size: 13px;
      font-weight: 500;
    }
    .case-quote {
      position: relative;
      font-style: italic;
    }
    .case-quote::before {
      content: '“';
      font-size: 3rem;
      color: var(--accent-gold);
      position: absolute;
      left: -10px;
      top: -15px;
      font-family: var(--font-serif);
    }
    .pricing-highlight {
      border: 2px solid var(--highlight-gold);
      position: relative;
    }
    .pricing-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--highlight-gold);
      color: var(--primary-deep);
      font-weight: 600;
      padding: 4px 16px;
      border-radius: 20px;
      font-size: 13px;
    }
    .accordion-button:not(.collapsed) {
      background-color: var(--bg-warm);
      color: var(--accent-gold);
      box-shadow: none;
    }
    .accordion-button:focus {
      border-color: var(--accent-gold);
      box-shadow: 0 0 0 0.15rem rgba(201,169,110,0.25);
    }
    .footer-dark {
      background: var(--dark-bg);
      color: #ccc;
    }
    .footer-dark a {
      color: #aaa;
    }
    .footer-dark a:hover {
      color: var(--accent-gold);
    }
    /* 移动底部导航 */
    .mobile-bottom-nav {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 56px;
      background: #FFFFFF;
      border-top: 1px solid var(--border-light);
      display: flex;
      justify-content: space-around;
      align-items: center;
      z-index: 1030;
      box-shadow: 0 -2px 10px rgba(0,0,0,0.03);
    }
    .mobile-nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      font-size: 12px;
      color: var(--text-muted);
      transition: 0.2s;
    }
    .mobile-nav-item i {
      font-size: 20px;
      margin-bottom: 2px;
    }
    .mobile-nav-item.active {
      color: var(--accent-gold);
    }
    @media (min-width: 992px) {
      .mobile-bottom-nav {
        display: none;
      }
    }