/* roulang page: index */
:root {
      --deep-blue-black: #0B0F1A;
      --amber-gold: #D4A017;
      --dark-amber: #B8860B;
      --card-bg: #1A1F2E;
      --warm-white: #F5F3EE;
      --light-gray: #E0E0E0;
      --glow-green: #00E676;
      --glass-bg: rgba(26, 31, 46, 0.7);
      --glass-border: rgba(212, 160, 23, 0.25);
      --blur-amount: 12px;
      --border-radius-lg: 16px;
      --border-radius-btn: 50px;
      --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
      --shadow-gold: 0 0 20px rgba(212,160,23,0.3);
      --bs-primary: var(--amber-gold);
      --bs-body-bg: var(--deep-blue-black);
      --bs-body-color: var(--light-gray);
      --bs-border-radius: var(--border-radius-lg);
      --bs-card-bg: var(--glass-bg);
      --font-sans: 'Noto Sans SC', sans-serif;
      --section-gap: 130px;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--deep-blue-black);
      color: var(--light-gray);
      font-weight: 300;
      line-height: 1.8;
      font-size: 16px;
      overflow-x: hidden;
    }

    h1, h2, h3, h4, .h1, .h2, .h3 {
      font-weight: 700;
      color: var(--warm-white);
      letter-spacing: -0.02em;
    }

    h1 {
      font-size: 56px;
      line-height: 1.2;
    }
    h2 {
      font-size: 42px;
      line-height: 1.3;
      color: var(--warm-white);
    }
    h3 {
      font-size: 22px;
      line-height: 1.4;
      color: var(--amber-gold);
    }

    .text-gold {
      color: var(--amber-gold);
    }
    .bg-deep {
      background-color: var(--deep-blue-black);
    }
    .bg-card {
      background-color: var(--card-bg);
    }

    /* 自定义容器 */
    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 导航栏 - 固定顶部 */
    .navbar-custom {
      background: rgba(11, 15, 26, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid transparent;
      background-image: linear-gradient(rgba(11,15,26,0.85), rgba(11,15,26,0.85)), 
                        linear-gradient(90deg, var(--amber-gold), var(--dark-amber));
      background-origin: border-box;
      background-clip: padding-box, border-box;
      padding: 12px 0;
      transition: all 0.3s ease;
    }
    .navbar-brand {
      font-weight: 700;
      font-size: 1.8rem;
      color: var(--warm-white) !important;
      letter-spacing: 1px;
      display: flex;
      align-items: center;
    }
    .brand-gold-bar {
      display: inline-block;
      width: 4px;
      height: 24px;
      background: var(--amber-gold);
      margin-left: 8px;
      border-radius: 2px;
    }
    .nav-link-custom {
      color: var(--light-gray) !important;
      font-weight: 400;
      margin: 0 12px;
      position: relative;
      transition: 0.2s;
    }
    .nav-link-custom:hover,
    .nav-link-custom.active {
      color: var(--amber-gold) !important;
    }
    .nav-link-custom::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--amber-gold);
      transition: width 0.3s;
    }
    .nav-link-custom:hover::after,
    .nav-link-custom.active::after {
      width: 100%;
    }

    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
    }

    /* Hero */
    .hero-section {
      padding-top: 140px;
      padding-bottom: 100px;
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      min-height: 90vh;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 30% 40%, rgba(212,160,23,0.08) 0%, rgba(11,15,26,0.85) 70%);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .btn-primary-gold {
      background: linear-gradient(135deg, #D4A017, #B8860B);
      border: none;
      color: #0B0F1A;
      font-weight: 700;
      border-radius: var(--border-radius-btn);
      padding: 14px 36px;
      transition: all 0.3s;
      box-shadow: 0 4px 15px rgba(212,160,23,0.4);
    }
    .btn-primary-gold:hover {
      box-shadow: 0 0 25px rgba(212,160,23,0.7);
      transform: translateY(-2px);
      color: #0B0F1A;
    }
    .btn-outline-gold {
      border: 1px solid var(--amber-gold);
      background: transparent;
      color: var(--amber-gold);
      font-weight: 700;
      border-radius: var(--border-radius-btn);
      padding: 14px 36px;
      transition: all 0.3s;
    }
    .btn-outline-gold:hover {
      background: rgba(212,160,23,0.1);
      color: var(--amber-gold);
      border-color: var(--amber-gold);
    }

    /* 玻璃卡片 */
    .glass-card {
      background: var(--glass-bg);
      backdrop-filter: blur(var(--blur-amount));
      -webkit-backdrop-filter: blur(var(--blur-amount));
      border: 1px solid var(--glass-border);
      border-radius: var(--border-radius-lg);
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      box-shadow: var(--shadow-gold);
      border-color: rgba(212,160,23,0.5);
    }

    /* 服务卡片 */
    .service-card {
      background: var(--card-bg);
      border-radius: var(--border-radius-lg);
      overflow: hidden;
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.6), 0 0 25px rgba(212,160,23,0.4);
    }
    .service-img {
      height: 200px;
      object-fit: cover;
    }

    /* 数字动画 */
    .counter-number {
      font-size: 52px;
      font-weight: 700;
      color: var(--amber-gold);
      line-height: 1.2;
    }

    /* 流程步骤 */
    .step-circle {
      width: 60px;
      height: 60px;
      background: var(--amber-gold);
      color: #0B0F1A;
      font-weight: 700;
      font-size: 24px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .faq-accordion .accordion-button {
      background-color: var(--card-bg);
      color: var(--warm-white);
      font-weight: 500;
      border: 1px solid transparent;
      border-left: 4px solid var(--amber-gold);
      border-radius: 8px !important;
      padding: 16px 20px;
      transition: 0.2s;
    }
    .faq-accordion .accordion-button:not(.collapsed) {
      background-color: rgba(26,31,46,0.95);
      color: var(--amber-gold);
      border-color: var(--amber-gold);
      box-shadow: none;
    }
    .faq-accordion .accordion-body {
      background-color: rgba(11,15,26,0.8);
      color: var(--light-gray);
    }

    footer {
      background: #0F1320;
      border-top: 1px solid rgba(212,160,23,0.3);
    }

    @media (max-width: 992px) {
      h1 { font-size: 42px; }
      h2 { font-size: 34px; }
    }

    @media (max-width: 768px) {
      :root { --section-gap: 80px; }
      h1 { font-size: 36px; }
      h2 { font-size: 30px; }
      .desktop-nav { display: none !important; }
      .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(11,15,26,0.95);
        backdrop-filter: blur(20px);
        border-top: 1px solid rgba(212,160,23,0.4);
        justify-content: space-around;
        padding: 8px 0;
        z-index: 1030;
      }
      .mobile-nav-item {
        color: #aaa;
        text-decoration: none;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        align-items: center;
        transition: 0.2s;
      }
      .mobile-nav-item i { font-size: 20px; margin-bottom: 2px; }
      .mobile-nav-item.active, .mobile-nav-item:hover { color: var(--amber-gold); }
      .hero-section { min-height: 80vh; padding-top: 120px; }
      .btn-primary-gold, .btn-outline-gold { padding: 12px 24px; font-size: 14px; }
    }