/* roulang page: index */
:root {
      --bs-primary: #E94057;
      --bs-body-bg: #F8F9FC;
      --bs-body-color: #4A4A6A;
      --bs-border-radius: 20px;
      --bs-btn-padding-x: 2rem;
      --bs-btn-padding-y: 0.75rem;
      --brand-red: #E94057;
      --brand-dark: #1A1A2E;
      --brand-blue: #0F3460;
      --brand-gold: #F5C518;
      --text-dark: #1A1A2E;
      --text-body: #4A4A6A;
      --text-muted: #7B7B9A;
      --bg-light: #F8F9FC;
      --card-bg: #FFFFFF;
      --shadow-sm: 0 4px 24px rgba(26,26,46,0.06);
      --shadow-brand: 0 12px 32px rgba(233,64,87,0.15);
      --border-light: rgba(255,255,255,0.08);
      --font-mono: 'DIN Alternate', 'Courier New', monospace;
      --transition: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-body);
      line-height: 1.7;
      margin: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, h4, .h1, .h2, .h3 {
      font-weight: 700;
      color: var(--text-dark);
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: 1200px;
    }
    /* 导航栏 */
    .navbar {
      background: rgba(26,26,46,0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255,255,255,0.1);
      height: 72px;
      padding: 0 1rem;
    }
    .navbar-brand {
      font-size: 24px;
      font-weight: 800;
      background: linear-gradient(135deg, var(--brand-red), var(--brand-gold));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .navbar-brand small {
      font-size: 12px;
      font-weight: 500;
      background: rgba(255,255,255,0.2);
      color: white;
      padding: 2px 8px;
      border-radius: 20px;
      -webkit-text-fill-color: white;
      background-clip: unset;
    }
    .nav-link {
      color: #B0B0CC !important;
      font-weight: 500;
      font-size: 15px;
      margin: 0 0.5rem;
      padding: 0.5rem 0.75rem !important;
      position: relative;
      transition: var(--transition);
    }
    .nav-link:hover, .nav-link.active {
      color: #FFFFFF !important;
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0.75rem;
      right: 0.75rem;
      height: 3px;
      background: var(--brand-red);
      border-radius: 2px;
    }
    .btn-nav-cta {
      background: linear-gradient(135deg, var(--brand-red), var(--brand-gold));
      border: none;
      color: white;
      font-weight: 600;
      padding: 10px 24px;
      border-radius: 12px;
      font-size: 14px;
      box-shadow: 0 4px 12px rgba(233,64,87,0.3);
      transition: var(--transition);
    }
    .btn-nav-cta:hover {
      background: linear-gradient(135deg, var(--brand-gold), var(--brand-red));
      transform: translateY(-1px);
      box-shadow: 0 8px 20px rgba(233,64,87,0.4);
    }
    .navbar-toggler {
      border: none;
      color: white;
      font-size: 1.5rem;
    }
    .navbar-toggler:focus {
      box-shadow: none;
    }
    @media (max-width: 992px) {
      .navbar-collapse {
        background: rgba(26,26,46,0.98);
        backdrop-filter: blur(20px);
        padding: 1.5rem;
        border-radius: 0 0 20px 20px;
        margin-top: 12px;
      }
      .nav-link {
        text-align: center;
        font-size: 18px;
        margin: 0.5rem 0;
      }
    }
    /* Hero */
    .hero {
      min-height: 100vh;
      background: linear-gradient(135deg, #1A1A2E 0%, #0F3460 40%, #E94057 100%);
      position: relative;
      display: flex;
      align-items: center;
      color: white;
      overflow: hidden;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.25;
      mix-blend-mode: overlay;
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      padding: 2rem 0;
    }
    .hero h1 {
      font-size: 56px;
      font-weight: 700;
      line-height: 1.2;
      color: white;
      text-shadow: 0 4px 20px rgba(0,0,0,0.4);
    }
    .hero .lead {
      font-size: 18px;
      opacity: 0.85;
      max-width: 600px;
    }
    .btn-primary-custom {
      background: linear-gradient(135deg, var(--brand-red), var(--brand-gold));
      border: none;
      color: white;
      font-weight: 600;
      padding: 14px 36px;
      border-radius: 12px;
      box-shadow: 0 4px 16px rgba(233,64,87,0.4);
      transition: var(--transition);
    }
    .btn-primary-custom:hover {
      background: linear-gradient(135deg, var(--brand-gold), var(--brand-red));
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(233,64,87,0.5);
    }
    .btn-outline-light-custom {
      border: 2px solid white;
      color: white;
      background: transparent;
      font-weight: 600;
      padding: 14px 36px;
      border-radius: 12px;
      transition: var(--transition);
    }
    .btn-outline-light-custom:hover {
      background: rgba(255,255,255,0.15);
      border-color: white;
    }
    .badge-stat {
      background: rgba(0,0,0,0.45);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255,255,255,0.25);
      border-radius: 16px;
      padding: 1rem 1.5rem;
      color: white;
      text-align: center;
    }
    .badge-stat .number {
      font-family: var(--font-mono);
      font-size: 2rem;
      font-weight: 700;
      background: linear-gradient(180deg, var(--brand-gold), var(--brand-red));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    @media (max-width: 768px) {
      .hero h1 {
        font-size: 36px;
      }
      .badge-stat {
        margin-bottom: 1rem;
      }
    }
    /* 区块标题 */
    .section-title h2 {
      font-size: 36px;
      font-weight: 700;
      margin-bottom: 0.5rem;
      position: relative;
      display: inline-block;
    }
    .section-title h2::after {
      content: '';
      display: block;
      width: 50px;
      height: 4px;
      background: var(--brand-red);
      margin: 12px auto 0;
      border-radius: 2px;
    }
    .section-title p {
      color: var(--text-muted);
      font-size: 1.1rem;
    }
    /* 卡片通用 */
    .card-custom {
      background: var(--card-bg);
      border-radius: 24px;
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border: none;
      height: 100%;
    }
    .card-custom:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-brand);
    }
    .icon-circle {
      width: 64px;
      height: 64px;
      background: rgba(233,64,87,0.08);
      border-radius: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-red);
      font-size: 2rem;
      margin-bottom: 1.5rem;
    }
    /* 数据看板 */
    .dark-section {
      background: var(--brand-dark);
      padding: 100px 0;
      color: white;
    }
    .metric-card {
      background: rgba(255,255,255,0.04);
      border-radius: 20px;
      padding: 2rem 1.5rem;
      border: 1px solid var(--border-light);
      backdrop-filter: blur(4px);
      transition: var(--transition);
    }
    .metric-card:hover {
      background: rgba(255,255,255,0.08);
    }
    .metric-number {
      font-family: var(--font-mono);
      font-size: 44px;
      font-weight: 700;
      background: linear-gradient(180deg, var(--brand-gold), var(--brand-red));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    /* 服务体系横向卡片 */
    .service-card {
      background: white;
      border-radius: 20px;
      padding: 1.5rem;
      display: flex;
      align-items: center;
      gap: 1.5rem;
      border-left: 4px solid var(--brand-red);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .service-card:hover {
      border-left-width: 8px;
      box-shadow: var(--shadow-brand);
    }
    .service-icon {
      width: 56px;
      height: 56px;
      background: rgba(233,64,87,0.1);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-red);
      font-size: 1.8rem;
      flex-shrink: 0;
    }
    /* 对比区 */
    .compare-card {
      border-radius: 20px;
      padding: 2rem;
    }
    .vs-badge {
      width: 70px;
      height: 70px;
      background: linear-gradient(135deg, var(--brand-red), var(--brand-gold));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.8rem;
      color: white;
      box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    }
    /* FAQ */
    .accordion-button {
      font-weight: 600;
      font-size: 18px;
      background: transparent;
      box-shadow: none;
      border: none;
      padding: 1.2rem 1rem;
      color: var(--text-dark);
    }
    .accordion-button:not(.collapsed) {
      background: rgba(233,64,87,0.03);
      color: var(--brand-red);
    }
    .accordion-item {
      border: none;
      border-bottom: 1px solid rgba(0,0,0,0.05);
      background: transparent;
    }
    /* CTA 表单 */
    .cta-section {
      background: linear-gradient(120deg, #E94057 0%, #1A1A2E 100%);
      padding: 100px 0;
    }
    .glass-input {
      background: rgba(0,0,0,0.25);
      border: 1px solid rgba(255,255,255,0.35);
      border-radius: 14px;
      padding: 0.9rem 1.2rem;
      color: white;
      font-size: 16px;
      backdrop-filter: blur(8px);
    }
    .glass-input::placeholder {
      color: rgba(255,255,255,0.6);
    }
    .glass-input:focus {
      border-color: var(--brand-gold);
      box-shadow: 0 0 0 0.2rem rgba(245,197,24,0.25);
      background: rgba(0,0,0,0.4);
    }
    .btn-gold {
      background: var(--brand-gold);
      border: none;
      color: #1A1A2E;
      font-weight: 700;
      padding: 0.9rem 2.5rem;
      border-radius: 14px;
      font-size: 16px;
      transition: var(--transition);
    }
    .btn-gold:hover {
      filter: brightness(1.1);
      transform: scale(1.02);
    }
    /* 页脚 */
    footer {
      background: #141428;
      color: #B0B0CC;
    }
    footer a:hover {
      color: var(--brand-red);
    }
    @media (max-width: 768px) {
      .service-card {
        flex-direction: column;
        align-items: flex-start;
      }
    }