/* roulang page: index */
:root {
      --primary-color: #0F52BA;
      --primary-dark: #0A2540;
      --primary-hover: #084298;
      --accent-cyan: #00D4B2;
      --accent-glow: #00E5FF;
      --bg-light: #F8FAFC;
      --bg-subtle: #F1F5F9;
      --bg-dark: #0B132B;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --card-border: rgba(226, 232, 240, 0.9);
      --card-shadow: 0 4px 20px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 20px;
    }

    * {
      box-sizing: border-box;
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    /* 顶栏导航规范 */
    .site-header {
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.85);
      position: sticky;
      top: 0;
      z-index: 1040;
      transition: box-shadow 0.3s;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary-dark);
    }
    .brand-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary-color), var(--accent-cyan));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.1rem;
      box-shadow: 0 4px 10px rgba(15, 82, 186, 0.25);
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: #334155 !important;
      padding: 0.5rem 0.9rem !important;
      border-radius: var(--radius-sm);
      transition: color 0.2s, background-color 0.2s;
    }
    .nav-link:hover {
      color: var(--primary-color) !important;
      background-color: var(--bg-subtle);
    }
    .nav-search-box {
      position: relative;
      width: 170px;
    }
    .nav-search-box input {
      border-radius: 20px;
      padding-left: 32px;
      font-size: 0.85rem;
      border: 1px solid #CBD5E1;
      background-color: #F8FAFC;
    }
    .nav-search-box .bi-search {
      position: absolute;
      left: 11px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 按钮与徽章 */
    .btn-main {
      background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
      color: #fff !important;
      border: none;
      border-radius: var(--radius-md);
      font-weight: 600;
      padding: 0.65rem 1.4rem;
      box-shadow: 0 4px 14px rgba(15, 82, 186, 0.28);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .btn-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(15, 82, 186, 0.38);
    }
    .btn-outline-main {
      border: 1.5px solid var(--primary-color);
      color: var(--primary-color);
      border-radius: var(--radius-md);
      font-weight: 600;
      padding: 0.65rem 1.4rem;
      background: transparent;
      transition: all 0.2s;
    }
    .btn-outline-main:hover {
      background: var(--primary-color);
      color: #fff;
    }
    .badge-soft {
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary-color);
      font-weight: 600;
      border-radius: 20px;
      padding: 0.35rem 0.85rem;
      font-size: 0.85rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .badge-glow {
      background: rgba(0, 212, 178, 0.15);
      color: #008771;
      border: 1px solid rgba(0, 212, 178, 0.4);
      font-weight: 600;
      border-radius: 20px;
      padding: 0.35rem 0.85rem;
      font-size: 0.85rem;
    }

    /* 通用Section布局 */
    .section-block {
      padding: 85px 0;
      position: relative;
    }
    .section-bg-alt {
      background-color: var(--bg-subtle);
    }
    .section-title-wrap {
      margin-bottom: 52px;
      text-align: center;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
      margin-top: 10px;
    }
    .section-subtext {
      color: var(--text-muted);
      max-width: 760px;
      margin: 12px auto 0;
      font-size: 1.05rem;
      line-height: 1.7;
    }

    /* 卡片体系 */
    .custom-card {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--card-shadow);
      padding: 30px;
      height: 100%;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .custom-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
    }

    /* Hero 大图横幅与工作台展示 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(11, 19, 43, 0.88), rgba(15, 82, 186, 0.82)), url('/assets/images/8bb63a3f94585f3a.jpg') center/cover no-repeat;
      color: #fff;
      padding: 95px 0 105px;
      overflow: hidden;
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
    }
    .hero-lead {
      font-size: 1.12rem;
      color: #E2E8F0;
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-console-mockup {
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-xl);
      padding: 24px;
      box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
    }
    .console-screen-img {
      width: 100%;
      height: 250px;
      object-fit: cover;
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .stream-tag {
      background: rgba(0, 229, 255, 0.15);
      border: 1px solid var(--accent-glow);
      color: var(--accent-glow);
      font-size: 0.78rem;
      padding: 3px 10px;
      border-radius: 12px;
    }

    /* 痛点对比条 */
    .pain-card {
      border-left: 4px solid #EF4444;
      background: #FFF5F5;
      border-radius: var(--radius-md);
      padding: 24px;
      height: 100%;
    }
    .progress-bar-custom {
      height: 12px;
      border-radius: 6px;
      background: #E2E8F0;
      overflow: hidden;
    }
    .progress-fill-ai {
      width: 95%;
      height: 100%;
      background: linear-gradient(90deg, var(--accent-cyan), var(--primary-color));
    }
    .progress-fill-manual {
      width: 25%;
      height: 100%;
      background: #94A3B8;
    }

    /* 深色技术逻辑板块 */
    .dark-tech-section {
      background-color: var(--bg-dark);
      color: #F8FAFC;
      padding: 95px 0;
    }
    .tech-step-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 28px 22px;
      text-align: center;
      transition: all 0.3s ease;
      height: 100%;
    }
    .tech-step-card:hover {
      border-color: var(--accent-cyan);
      background: rgba(0, 212, 178, 0.06);
      transform: translateY(-4px);
    }
    .step-number {
      width: 42px;
      height: 42px;
      margin: 0 auto 16px;
      background: rgba(0, 229, 255, 0.15);
      color: var(--accent-cyan);
      border: 1px solid var(--accent-cyan);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }

    /* 套件对比高亮卡 */
    .pricing-featured {
      border: 2px solid var(--primary-color);
      position: relative;
      transform: scale(1.03);
    }
    .popular-tag {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-color);
      color: #fff;
      font-size: 0.8rem;
      padding: 3px 16px;
      border-radius: 20px;
      font-weight: 600;
      letter-spacing: 0.5px;
    }

    /* 成果指标条 */
    .metrics-bar {
      background: linear-gradient(135deg, #0A2540, #0F52BA);
      color: #fff;
      border-radius: var(--radius-xl);
      padding: 50px 30px;
      box-shadow: 0 10px 30px rgba(10, 37, 64, 0.2);
    }
    .metric-num {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--accent-cyan);
      line-height: 1.1;
      font-family: Arial, sans-serif;
    }

    /* 客户案例 */
    .case-card-img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      border-radius: var(--radius-md);
    }

    /* 手风琴覆盖 */
    .accordion-item {
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md) !important;
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
    }
    .accordion-button {
      font-weight: 600;
      color: var(--primary-dark);
      background: #FFFFFF;
      padding: 20px 24px;
    }
    .accordion-button:not(.collapsed) {
      color: var(--primary-color);
      background-color: #F8FAFC;
      box-shadow: none;
    }
    .accordion-body {
      color: var(--text-muted);
      line-height: 1.8;
      padding: 20px 24px;
      background: #FFFFFF;
    }

    /* 页脚设计 */
    .site-footer {
      background-color: #060D1E;
      color: #94A3B8;
      padding-top: 70px;
      padding-bottom: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.92rem;
    }
    .footer-title {
      color: #F8FAFC;
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 22px;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--accent-cyan);
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 50px;
      padding-top: 25px;
      text-align: center;
      font-size: 0.85rem;
    }

    @media (max-width: 991px) {
      .hero-h1 { font-size: 2.2rem; }
      .section-block { padding: 60px 0; }
      .pricing-featured { transform: scale(1); margin-top: 20px; }
      .nav-search-box { display: none; }
    }
    @media (max-width: 576px) {
      .hero-h1 { font-size: 1.85rem; }
      .section-title { font-size: 1.65rem; }
      .custom-card { padding: 20px; }
      .btn-main, .btn-outline-main { width: 100%; margin-bottom: 10px; text-align: center; }
    }