/* roulang page: index */
:root {
      --primary-deep: #1A2B3C;
      --accent-gold: #C5964A;
      --bg-warm-light: #F2F0E8;
      --highlight-green: #2D6A4F;
      --text-dark: #1E1E1E;
      --text-muted: #4A4A4A;
      --card-bg: #FFFFFF;
      --card-shadow: 0 4px 20px rgba(26, 43, 60, 0.06);
      --card-shadow-hover: 0 8px 30px rgba(26, 43, 60, 0.10);
      --border-radius-card: 12px;
      --border-radius-btn: 8px;
      --border-radius-input: 6px;
      --border-radius-accordion: 8px;
      --font-heading: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-number: 'Inter', 'Noto Sans SC', sans-serif;
      --transition-base: 0.25s ease;
      --section-spacing: 5rem;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-body);
      color: var(--text-dark);
      background-color: var(--bg-warm-light);
      line-height: 1.8;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }

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

    h1 {
      font-size: 2.8rem;
      line-height: 1.3;
    }

    h2 {
      font-size: 2rem;
      font-weight: 600;
      margin-bottom: 1.5rem;
      color: var(--primary-deep);
    }

    h3 {
      font-size: 1.4rem;
      font-weight: 600;
      color: var(--primary-deep);
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 700px;
      margin: 0 auto 2rem auto;
    }

    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* 顶部信息条 */
    .top-bar {
      background-color: var(--primary-deep);
      color: var(--bg-warm-light);
      font-size: 0.8rem;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 1.5rem;
      font-family: var(--font-body);
    }
    .top-bar a {
      color: var(--bg-warm-light);
      text-decoration: none;
      transition: color var(--transition-base);
    }
    .top-bar a:hover {
      color: var(--accent-gold);
    }
    .top-bar .contact-hint i {
      margin-right: 4px;
      color: var(--accent-gold);
    }

    /* 主导航 */
    .navbar-custom {
      background-color: #fff;
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
      padding: 0.8rem 1.5rem;
    }
    .navbar-brand-custom {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.8rem;
      color: var(--primary-deep) !important;
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      letter-spacing: 1px;
    }
    .logo-icon {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      background-color: var(--primary-deep);
      color: var(--accent-gold);
      border-radius: 6px;
      font-weight: 700;
      font-size: 1.5rem;
    }
    .navbar-nav .nav-link {
      color: var(--primary-deep) !important;
      font-weight: 500;
      margin: 0 0.5rem;
      position: relative;
      padding: 0.5rem 0;
      transition: color var(--transition-base);
    }
    .navbar-nav .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--accent-gold);
      transition: width var(--transition-base);
    }
    .navbar-nav .nav-link:hover::after,
    .navbar-nav .nav-link.active::after {
      width: 100%;
    }
    .navbar-nav .nav-link:hover {
      color: var(--accent-gold) !important;
    }
    .offcanvas {
      background-color: #fff;
    }
    .offcanvas .nav-link {
      color: var(--primary-deep) !important;
      font-size: 1.2rem;
      padding: 0.8rem 1rem;
    }

    /* 按钮 */
    .btn-primary-custom {
      background-color: var(--accent-gold);
      border: none;
      color: #fff;
      font-weight: 600;
      padding: 0.75rem 2rem;
      border-radius: var(--border-radius-btn);
      transition: background-color var(--transition-base), transform var(--transition-base);
      text-decoration: none;
      display: inline-block;
    }
    .btn-primary-custom:hover {
      background-color: #B07D32;
      color: #fff;
      transform: translateY(-2px);
    }
    .btn-outline-custom {
      border: 2px solid var(--accent-gold);
      color: var(--accent-gold);
      background: transparent;
      font-weight: 600;
      padding: 0.75rem 2rem;
      border-radius: var(--border-radius-btn);
      transition: all var(--transition-base);
      text-decoration: none;
      display: inline-block;
    }
    .btn-outline-custom:hover {
      background-color: var(--accent-gold);
      color: #fff;
      transform: translateY(-2px);
    }

    /* Hero */
    .hero-section {
      background: linear-gradient(0deg, rgba(26,43,60,0.75) 0%, rgba(26,43,60,0.4) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 85vh;
      display: flex;
      align-items: center;
      color: #fff;
      position: relative;
    }
    .hero-content {
      max-width: 650px;
    }
    .hero-content h1 {
      font-size: 3.2rem;
      margin-bottom: 1.5rem;
      text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    }
    .hero-content .lead {
      font-size: 1.2rem;
      margin-bottom: 2rem;
      opacity: 0.9;
    }

    /* 痛点区 */
    .pain-point-card {
      background: #fff;
      border-radius: var(--border-radius-card);
      padding: 2rem 1.5rem;
      box-shadow: var(--card-shadow);
      height: 100%;
      transition: var(--transition-base);
    }
    .pain-point-card:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-4px);
    }
    .pain-icon {
      font-size: 2rem;
      color: var(--accent-gold);
      margin-bottom: 1rem;
    }

    /* 解决方案卡片 */
    .service-card {
      background: #fff;
      border-radius: var(--border-radius-card);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: all var(--transition-base);
      height: 100%;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--card-shadow-hover);
    }
    .service-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .service-card .card-body {
      padding: 1.5rem;
    }
    .service-link {
      color: var(--accent-gold);
      font-weight: 600;
      text-decoration: none;
      transition: gap 0.2s;
    }
    .service-link i {
      margin-left: 4px;
      transition: transform 0.2s;
    }
    .service-link:hover i {
      transform: translateX(4px);
    }

    /* 成果展示深色反转 */
    .stats-section {
      background-color: var(--primary-deep);
      color: #fff;
    }
    .stat-number {
      font-family: var(--font-number);
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--accent-gold);
      line-height: 1.2;
    }
    .stat-label {
      font-size: 1rem;
      color: var(--bg-warm-light);
      opacity: 0.85;
    }

    /* 证言卡片 */
    .testimonial-card {
      background: #FAFAFA;
      border-radius: var(--border-radius-card);
      padding: 2rem;
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
      height: 100%;
    }
    .testimonial-text {
      font-style: italic;
      color: var(--text-muted);
      position: relative;
    }
    .testimonial-text::before {
      content: "“";
      font-size: 3rem;
      color: var(--accent-gold);
      opacity: 0.5;
      position: absolute;
      left: -10px;
      top: -15px;
    }

    /* FAQ 手风琴 */
    .accordion-custom .accordion-item {
      border: none;
      margin-bottom: 0.75rem;
      border-radius: var(--border-radius-accordion) !important;
      overflow: hidden;
      background: #fff;
      box-shadow: 0 1px 4px rgba(0,0,0,0.02);
    }
    .accordion-custom .accordion-button {
      background-color: var(--bg-warm-light);
      color: var(--primary-deep);
      font-weight: 600;
      font-size: 1.1rem;
      padding: 1.2rem 1.5rem;
      border-radius: var(--border-radius-accordion) !important;
      box-shadow: none;
    }
    .accordion-custom .accordion-button:not(.collapsed) {
      background-color: #fff;
      color: var(--accent-gold);
      border-bottom: 1px solid #eee;
    }
    .accordion-custom .accordion-button::after {
      filter: invert(20%);
    }
    .accordion-custom .accordion-body {
      background: #fff;
      padding: 1.5rem;
      color: var(--text-muted);
    }

    /* 终极CTA */
    .cta-section {
      background: linear-gradient(135deg, var(--primary-deep) 0%, #2c3e50 100%);
      color: #fff;
    }

    /* 页脚 */
    .footer-custom {
      background-color: var(--primary-deep);
      color: #ccc;
    }
    .footer-custom a {
      color: #ccc;
      text-decoration: none;
      transition: color 0.2s;
    }
    .footer-custom a:hover {
      color: var(--accent-gold);
    }
    .footer-brand {
      font-size: 1.5rem;
      font-weight: 700;
      color: #fff;
    }

    @media (max-width: 768px) {
      h1 {
        font-size: 2rem;
      }
      .hero-section {
        min-height: 70vh;
        padding: 2rem 0;
      }
      .hero-content h1 {
        font-size: 2.4rem;
      }
      .navbar-collapse {
        background: #fff;
      }
      .stat-number {
        font-size: 2.2rem;
      }
    }