/* roulang page: index */
:root {
      --primary-deep: #1A3C5E;
      --primary-dark: #0F2A45;
      --accent-gold: #C8A96E;
      --accent-gold-hover: #B8944F;
      --bg-light: #FAFBFD;
      --card-bg: #FFFFFF;
      --text-main: #1E2A38;
      --text-secondary: #5A6B7D;
      --text-muted: #8C9BAE;
      --footer-bg: #1A2B3C;
      --footer-dark: #0F1E2D;
      --border-light: rgba(26,60,94,0.08);
      --shadow-card: 0 4px 20px rgba(26,60,94,0.06);
      --shadow-card-hover: 0 12px 32px rgba(26,60,94,0.10);
      --shadow-nav: 0 2px 16px rgba(0,0,0,0.04);
      --radius-card: 12px;
      --radius-btn: 8px;
      --transition-base: 0.25s ease;
      --font-system: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      font-family: var(--font-system);
      background-color: var(--bg-light);
      color: var(--text-main);
      margin: 0;
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    
    h1, h2, h3, .h4-style {
      font-weight: 600;
      letter-spacing: -0.2px;
    }
    
    a {
      text-decoration: none;
      transition: color var(--transition-base);
    }
    
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    
    .container {
      max-width: 1200px;
      padding-left: 24px;
      padding-right: 24px;
    }
    
    /* 导航 */
    .navbar-custom {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1030;
      background: transparent;
      transition: background var(--transition-base), box-shadow var(--transition-base);
      padding: 16px 0;
    }
    
    .navbar-custom.scrolled {
      background: rgba(255,255,255,0.95);
      backdrop-filter: blur(8px);
      box-shadow: var(--shadow-nav);
    }
    
    .navbar-brand {
      font-size: 22px;
      font-weight: 700;
      color: #fff !important;
      letter-spacing: 1px;
      transition: color var(--transition-base);
    }
    
    .navbar-custom.scrolled .navbar-brand {
      color: var(--primary-deep) !important;
    }
    
    .navbar-brand i {
      color: var(--accent-gold);
      margin-right: 6px;
      font-size: 24px;
    }
    
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: rgba(255,255,255,0.85) !important;
      margin: 0 6px;
      padding: 6px 14px !important;
      border-bottom: 2px solid transparent;
      transition: color var(--transition-base), border-color var(--transition-base);
    }
    
    .navbar-custom.scrolled .nav-link {
      color: var(--text-secondary) !important;
    }
    
    .nav-link:hover,
    .nav-link.active {
      color: #fff !important;
      border-bottom-color: var(--accent-gold);
    }
    
    .navbar-custom.scrolled .nav-link:hover,
    .navbar-custom.scrolled .nav-link.active {
      color: var(--primary-deep) !important;
      border-bottom-color: var(--accent-gold);
    }
    
    .btn-outline-nav {
      border: 2px solid rgba(255,255,255,0.9);
      color: #fff;
      background: transparent;
      padding: 8px 20px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 14px;
      transition: all var(--transition-base);
    }
    
    .navbar-custom.scrolled .btn-outline-nav {
      border-color: var(--primary-deep);
      color: var(--primary-deep);
    }
    
    .btn-outline-nav:hover {
      background: #fff;
      color: var(--primary-deep);
    }
    
    .navbar-custom.scrolled .btn-outline-nav:hover {
      background: var(--primary-deep);
      color: #fff;
    }
    
    .navbar-toggler {
      border: none;
      color: #fff;
      font-size: 24px;
    }
    
    .navbar-custom.scrolled .navbar-toggler {
      color: var(--primary-deep);
    }
    
    @media (max-width: 991px) {
      .navbar-collapse {
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(10px);
        border-radius: 12px;
        margin-top: 16px;
        padding: 20px;
        box-shadow: var(--shadow-card);
      }
      .navbar-custom.scrolled .navbar-collapse {
        background: #fff;
      }
      .nav-link {
        color: var(--text-secondary) !important;
        margin: 8px 0;
      }
      .btn-outline-nav {
        border-color: var(--primary-deep);
        color: var(--primary-deep);
        margin-top: 10px;
      }
    }
    
    /* Hero */
    .hero {
      min-height: 90vh;
      background: linear-gradient(0deg, rgba(15,42,69,0.45) 0%, rgba(26,60,94,0.35) 100%), url('/assets/images/backpic/back-1.webp') center center/cover no-repeat;
      display: flex;
      align-items: center;
      color: #fff;
      position: relative;
    }
    
    .hero-content {
      max-width: 600px;
    }
    
    .hero-tag {
      font-size: 14px;
      letter-spacing: 2px;
      color: var(--accent-gold);
      text-transform: uppercase;
      margin-bottom: 16px;
    }
    
    .hero h1 {
      font-size: 52px;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    
    .hero-sub {
      font-size: 18px;
      color: rgba(255,255,255,0.85);
      margin-bottom: 32px;
      line-height: 1.6;
    }
    
    .btn-primary-gold {
      background: var(--accent-gold);
      color: var(--primary-deep);
      border: none;
      padding: 12px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: all 0.2s;
      display: inline-block;
    }
    
    .btn-primary-gold:hover {
      background: var(--accent-gold-hover);
      transform: translateY(-2px);
      color: var(--primary-deep);
    }
    
    .btn-outline-white {
      border: 2px solid #fff;
      color: #fff;
      padding: 12px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      background: transparent;
      transition: all 0.2s;
      margin-left: 16px;
    }
    
    .btn-outline-white:hover {
      background: #fff;
      color: var(--primary-deep);
      transform: translateY(-2px);
    }
    
    .hero-stats {
      position: absolute;
      right: 40px;
      bottom: 60px;
      display: flex;
      gap: 24px;
    }
    
    .stat-item {
      background: rgba(255,255,255,0.1);
      backdrop-filter: blur(4px);
      padding: 16px 24px;
      border-radius: 12px;
      text-align: center;
    }
    
    .stat-number {
      font-size: 28px;
      font-weight: 700;
      color: var(--accent-gold);
    }
    
    @media (max-width: 768px) {
      .hero h1 {
        font-size: 36px;
      }
      .hero-stats {
        position: static;
        margin-top: 30px;
        flex-wrap: wrap;
      }
      .btn-outline-white {
        margin-left: 0;
        margin-top: 12px;
      }
    }
    
    /* 板块标题 */
    .section-title {
      text-align: center;
      margin-bottom: 60px;
    }
    
    .section-title h2 {
      font-size: 38px;
      font-weight: 600;
      margin-bottom: 16px;
      color: var(--primary-deep);
    }
    
    .title-decor {
      width: 40px;
      height: 4px;
      background: var(--accent-gold);
      margin: 0 auto;
    }
    
    /* 卡片通用 */
    .card-custom {
      background: var(--card-bg);
      border: none;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: all var(--transition-base);
      height: 100%;
    }
    
    .card-custom:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
    }
    
    .icon-circle {
      width: 72px;
      height: 72px;
      background: rgba(200,169,110,0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      color: var(--accent-gold);
      font-size: 32px;
    }
    
    /* 业务图文 */
    .biz-img {
      border-radius: 16px;
      box-shadow: var(--shadow-card);
      width: 100%;
      height: auto;
    }
    
    .text-accent {
      color: var(--accent-gold);
      font-weight: 600;
      letter-spacing: 1px;
      font-size: 14px;
    }
    
    /* 价格卡片高亮 */
    .card-highlight {
      border-left: 4px solid var(--accent-gold);
      box-shadow: 0 16px 36px rgba(26,60,94,0.12);
    }
    
    .badge-gold {
      background: var(--accent-gold);
      color: #fff;
    }
    
    /* FAQ */
    .accordion-button {
      background: #F4F6FA;
      border-radius: 8px !important;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: none;
      padding: 16px 20px;
    }
    
    .accordion-button:not(.collapsed) {
      background: #F4F6FA;
      color: var(--primary-deep);
      border-bottom-left-radius: 0 !important;
      border-bottom-right-radius: 0 !important;
    }
    
    .accordion-item {
      border: none;
      margin-bottom: 12px;
      background: transparent;
    }
    
    .accordion-body {
      background: #F4F6FA;
      border-radius: 0 0 8px 8px;
      color: var(--text-secondary);
    }
    
    /* CTA横幅 */
    .cta-banner {
      background: var(--primary-dark);
      padding: 80px 0;
      position: relative;
    }
    
    .btn-white-text {
      background: #fff;
      color: var(--primary-deep);
      font-weight: 600;
      padding: 12px 32px;
      border-radius: var(--radius-btn);
      border: none;
      transition: all 0.2s;
    }
    
    .btn-white-text:hover {
      background: #e0e0e0;
      transform: translateY(-2px);
    }
    
    /* 页脚 */
    .footer {
      background: var(--footer-bg);
      color: #B0C0D0;
    }
    
    .footer a {
      color: #B0C0D0;
    }
    
    .footer a:hover {
      color: var(--accent-gold);
    }
    
    .footer-bottom {
      background: var(--footer-dark);
      color: #6A7B8E;
    }
    
    @media (max-width: 576px) {
      .section-title h2 {
        font-size: 30px;
      }
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
    }