/* roulang page: index */
:root {
      --green-deep: #1B3A2D;
      --warm-white: #F7F5F0;
      --accent-orange: #E85D3F;
      --accent-orange-dark: #C94A30;
      --text-primary: #2C2C2C;
      --text-secondary: #5C5C5C;
      --text-on-dark: #FFFFFF;
      --border-light: rgba(27,58,45,0.08);
      --shadow-card: 0 2px 16px rgba(27,58,45,0.06);
      --shadow-card-hover: 0 8px 28px rgba(27,58,45,0.12);
      --radius-card: 12px;
      --radius-button: 8px;
      --transition-smooth: 0.25s ease;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      --font-numbers: "Inter", "SF Pro Display", system-ui, -apple-system, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-sans);
      color: var(--text-primary);
      background-color: var(--warm-white);
      line-height: 1.7;
      margin: 0;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4 {
      font-weight: 600;
      letter-spacing: -0.02em;
    }

    h1 {
      font-weight: 700;
      font-size: 48px;
      line-height: 1.2;
    }

    h2 {
      font-weight: 600;
      font-size: 32px;
      margin-bottom: 0.75rem;
    }

    h3 {
      font-size: 20px;
      font-weight: 600;
    }

    .section-title {
      position: relative;
      display: inline-block;
    }

    .section-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -8px;
      width: 40%;
      height: 3px;
      background: var(--accent-orange);
      border-radius: 2px;
    }

    .text-numbers {
      font-family: var(--font-numbers);
      font-weight: 700;
    }

    /* 导航 */
    .navbar {
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      padding: 0.75rem 0;
      transition: var(--transition-smooth);
    }

    .navbar-brand {
      font-weight: 700;
      font-size: 22px;
      color: var(--green-deep) !important;
      letter-spacing: -0.3px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .logo-icon {
      width: 28px;
      height: 28px;
      background: var(--green-deep);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      position: relative;
    }

    .logo-icon::before {
      content: '';
      width: 14px;
      height: 14px;
      background: white;
      border-radius: 50%;
    }

    .logo-icon::after {
      content: '';
      position: absolute;
      width: 8px;
      height: 8px;
      background: var(--green-deep);
      border-radius: 50%;
      top: 4px;
      left: -2px;
    }

    .nav-link {
      color: var(--text-primary) !important;
      font-weight: 500;
      margin: 0 0.25rem;
      padding: 0.5rem 0.75rem !important;
      position: relative;
      transition: color 0.2s;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--accent-orange) !important;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 0;
      height: 2px;
      background: var(--accent-orange);
      transition: width 0.2s ease;
    }

    .nav-link:hover::after, .nav-link.active::after {
      width: 70%;
    }

    .mega-trigger {
      cursor: pointer;
      color: var(--text-primary);
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 4px;
      padding: 0.5rem 0.75rem;
    }

    .mega-panel {
      position: absolute;
      right: 0;
      top: 100%;
      width: 480px;
      background: white;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card-hover);
      padding: 1.5rem;
      opacity: 0;
      visibility: hidden;
      transform: translateY(8px);
      transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
      z-index: 1000;
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }

    .mega-trigger:hover .mega-panel,
    .mega-trigger:focus-within .mega-panel {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .mega-mini-card {
      flex: 1 1 30%;
      background: var(--warm-white);
      border-radius: 10px;
      padding: 0.75rem;
      text-align: center;
      transition: background 0.2s;
    }

    .mega-mini-card:hover {
      background: white;
      box-shadow: var(--shadow-card);
    }

    /* 移动端offcanvas调整 */
    @media (max-width: 992px) {
      .mega-trigger {
        display: none;
      }
    }

    /* 按钮 */
    .btn-primary-custom {
      background: var(--accent-orange);
      border: none;
      color: white;
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-button);
      transition: background 0.2s, transform 0.2s;
      box-shadow: 0 4px 10px rgba(232,93,63,0.25);
    }

    .btn-primary-custom:hover {
      background: var(--accent-orange-dark);
      transform: scale(1.03);
      color: white;
    }

    .btn-outline-custom {
      background: transparent;
      border: 1.5px solid var(--green-deep);
      color: var(--green-deep);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-button);
      transition: all 0.2s;
    }

    .btn-outline-custom:hover {
      background: rgba(27,58,45,0.1);
      color: var(--green-deep);
    }

    /* Hero */
    .hero {
      min-height: 90vh;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      position: relative;
      display: flex;
      align-items: center;
      color: white;
    }

    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(27,58,45,0.7) 0%, rgba(27,58,45,0.15) 70%);
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .live-score-widget {
      background: rgba(255,255,255,0.15);
      backdrop-filter: blur(8px);
      border-radius: 12px;
      padding: 1rem 1.5rem;
      color: white;
      display: inline-flex;
      align-items: center;
      gap: 1.2rem;
      font-weight: 600;
      border: 1px solid rgba(255,255,255,0.25);
    }

    /* 服务卡片 */
    .service-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 2rem 1.5rem;
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
    }

    .service-icon {
      width: 64px;
      height: 64px;
      background: rgba(27,58,45,0.08);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.5rem;
    }

    /* 优势数字 */
    .stat-number {
      font-family: var(--font-numbers);
      font-weight: 700;
      font-size: 56px;
      color: var(--green-deep);
      line-height: 1.1;
    }

    /* 案例网格不对称 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: white;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
    }

    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
    }

    .case-card.large {
      grid-column: span 2;
    }

    /* FAQ */
    .accordion-button {
      background: var(--warm-white);
      color: var(--green-deep);
      font-weight: 600;
      border-radius: 8px !important;
      padding: 16px 20px;
      border-left: 3px solid var(--accent-orange);
      box-shadow: none;
    }

    .accordion-button:not(.collapsed) {
      background: white;
      color: var(--green-deep);
      box-shadow: none;
      border-left: 3px solid var(--accent-orange);
    }

    .accordion-button:focus {
      box-shadow: none;
      border-color: var(--accent-orange);
    }

    .accordion-body {
      padding: 16px 20px;
      color: var(--text-secondary);
    }

    /* CTA 横幅 */
    .cta-banner {
      background: var(--green-deep);
      background-image: radial-gradient(circle at 20% 30%, rgba(255,255,255,0.05) 0%, transparent 30%);
    }

    /* 页脚 */
    .footer {
      background: var(--green-deep);
      color: rgba(255,255,255,0.8);
    }

    .footer a {
      color: rgba(255,255,255,0.9);
      text-decoration: none;
    }

    .footer a:hover {
      color: var(--accent-orange);
    }

    @media (max-width: 992px) {
      h1 { font-size: 36px; }
      .stat-number { font-size: 42px; }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .case-card.large {
        grid-column: span 1;
      }
    }

    @media (max-width: 768px) {
      h1 { font-size: 32px; }
      h2 { font-size: 26px; }
      .service-card {
        margin-bottom: 1rem;
      }
    }

    @media (max-width: 576px) {
      .hero {
        min-height: 85vh;
      }
    }