/* roulang page: index */
/* 设计变量 */
    :root {
      --primary: #6C3CE0;
      --primary-light: #8B6EEB;
      --secondary-dark: #1E1E2C;
      --accent-green: #00E5A0;
      --accent-orange: #FF6B35;
      --bg-light: #F8F9FC;
      --white: #FFFFFF;
      --text-main: #1F2937;
      --text-secondary: #6B7280;
      --text-light: #9CA3AF;
      --border-light: #E5E7EB;
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-input: 8px;
      --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
      --shadow-hover: 0 12px 32px rgba(108,60,224,0.12);
      --transition: 0.3s ease;
      --max-width: 1200px;
    }

    /* Reset 与基础 */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.8;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      padding-top: 72px; /* 固定导航高度 */
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    button, input, textarea {
      font-family: inherit;
    }

    /* 标题与文字层级 */
    h1 {
      font-size: 48px;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 16px;
    }
    h2 {
      font-size: 36px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    h3 {
      font-size: 22px;
      font-weight: 600;
      margin-bottom: 12px;
    }
    .section-title {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-title h2 {
      color: var(--secondary-dark);
    }
    .section-title p {
      font-size: 18px;
      color: var(--text-secondary);
      max-width: 600px;
      margin: 0 auto;
    }

    /* 导航 */
    .main-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: var(--white);
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      z-index: 1000;
      display: flex;
      align-items: center;
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }
    .logo {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: 1px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-menu a {
      font-size: 16px;
      font-weight: 500;
      color: var(--text-main);
      transition: color var(--transition);
      position: relative;
    }
    .nav-menu a:hover {
      color: var(--primary);
    }
    .nav-cta {
      background: var(--primary);
      color: var(--white) !important;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: background var(--transition);
    }
    .nav-cta:hover {
      background: var(--accent-orange) !important;
      color: white !important;
    }
    .hamburger {
      display: none;
      font-size: 26px;
      cursor: pointer;
      color: var(--text-main);
    }
    /* 移动端导航面板 */
    .mobile-panel {
      display: none;
    }

    /* 按钮系统 */
    .btn {
      display: inline-block;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 16px;
      transition: all var(--transition);
      text-align: center;
      cursor: pointer;
    }
    .btn-primary {
      background: var(--primary);
      color: white;
      border: none;
    }
    .btn-primary:hover {
      background: var(--accent-orange);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: white;
    }
    .btn-orange {
      background: var(--accent-orange);
      color: white;
      border: none;
    }
    .btn-orange:hover {
      background: #e55a2b;
    }

    /* 板块间距 */
    section {
      padding: 100px 0;
    }

    /* Hero 首屏 */
    .hero {
      background-color: var(--white);
      display: flex;
      align-items: center;
      min-height: 85vh;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .hero-left h1 {
      color: var(--secondary-dark);
    }
    .hero-left .subtitle {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-right {
      background: var(--secondary-dark);
      border-radius: 24px;
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.2);
      position: relative;
      overflow: hidden;
      min-height: 360px;
      display: flex;
      align-items: center;
      justify-content: center;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
    }
    .dashboard-mock {
      background: rgba(30,30,44,0.9);
      backdrop-filter: blur(8px);
      border-radius: 16px;
      padding: 24px;
      width: 100%;
      color: white;
    }
    .mock-number {
      font-size: 42px;
      font-weight: 800;
      color: var(--accent-green);
      font-feature-settings: "tnum";
    }

    /* 数据指标看板 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .stat-card {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .stat-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .stat-number {
      font-size: 56px;
      font-weight: 800;
      color: var(--accent-green);
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .stat-label {
      font-size: 18px;
      color: var(--text-main);
      font-weight: 500;
    }

    /* 服务矩阵 2x3 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 36px 24px;
      box-shadow: var(--shadow-card);
      transition: all var(--transition);
      text-align: left;
    }
    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-hover);
    }
    .service-icon {
      font-size: 40px;
      color: var(--primary);
      margin-bottom: 20px;
    }
    .service-card h3 {
      margin-bottom: 10px;
    }
    .service-desc {
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 16px;
    }

    /* 结果对比 */
    .compare-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .compare-col {
      padding: 32px;
      border-radius: 20px;
    }
    .before-col {
      background: rgba(255,107,53,0.08);
    }
    .after-col {
      background: rgba(0,229,160,0.08);
    }
    .progress-bar {
      height: 12px;
      background: #e5e7eb;
      border-radius: 6px;
      margin: 12px 0;
    }
    .progress-fill {
      height: 100%;
      border-radius: 6px;
      background: var(--primary);
    }

    /* 流程步骤 */
    .steps-container {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      position: relative;
      flex-wrap: wrap;
    }
    .step-item {
      text-align: center;
      flex: 1;
      position: relative;
    }
    .step-circle {
      width: 64px;
      height: 64px;
      border-radius: 50%;
      background: white;
      border: 3px solid var(--primary);
      color: var(--primary);
      font-size: 28px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }

    /* FAQ */
    .faq-item {
      background: var(--white);
      border-radius: 12px;
      margin-bottom: 16px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-weight: 600;
      font-size: 18px;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
      background: white;
    }
    .faq-answer {
      padding: 0 24px 20px;
      color: var(--text-secondary);
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-question {
      border-left: 4px solid var(--primary);
    }

    /* CTA 表单 */
    .cta-section {
      background: var(--secondary-dark);
      color: white;
    }
    .form-row {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-top: 32px;
    }
    .form-input {
      flex: 1;
      padding: 16px;
      border-radius: var(--radius-input);
      border: none;
      background: white;
    }

    /* 页脚 */
    .footer {
      background: var(--secondary-dark);
      color: var(--text-light);
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .services-grid { grid-template-columns: repeat(2,1fr); }
      .stats-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      h1 { font-size: 36px; }
      .nav-menu { display: none; }
      .hamburger { display: block; }
      .hero-grid { grid-template-columns: 1fr; }
      .services-grid, .stats-grid { grid-template-columns: 1fr; }
      .compare-wrapper { grid-template-columns: 1fr; }
      .steps-container { flex-direction: column; gap: 24px; }
      .footer-grid { grid-template-columns: 1fr; }
    }

.mobile-panel{position:fixed;top:72px;right:0;background:white;width:80%;height:100%;display:none;flex-direction:column;padding:24px;z-index:999;}
    .mobile-panel.active{display:flex;}
    .mobile-panel a{padding:16px 0;border-bottom:1px solid #eee;font-size:18px;}
    @media(min-width:769px){.mobile-panel{display:none!important;}}