/* roulang page: index */
:root {
      --primary: #E9405F;
      --primary-dark: #D12E4F;
      --secondary: #FFB347;
      --dark: #1B1D2A;
      --dark-soft: #2D1E3C;
      --success: #00C9A7;
      --light-bg: #FAF9F7;
      --card-bg: #F0EDE8;
      --text-main: #1B1D2A;
      --text-secondary: #5A5D6B;
      --text-light: #B0B3BF;
      --white: #FFFFFF;
      --border-light: rgba(27,29,42,0.08);
      --shadow-sm: 0 4px 20px rgba(27,29,42,0.06);
      --shadow-hover: 0 12px 32px rgba(233,64,95,0.12);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --radius-full: 20px;
      --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      --font-num: 'DIN Alternate', 'Bebas Neue', 'PingFang SC', sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-body);
      font-weight: 400;
      line-height: 1.7;
      color: var(--text-main);
      background-color: var(--light-bg);
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-title);
      margin: 0;
    }

    h1 {
      font-size: 48px;
      font-weight: 800;
      line-height: 1.2;
    }
    h2 {
      font-size: 36px;
      font-weight: 700;
      margin-bottom: 16px;
      text-align: center;
    }
    h3 {
      font-size: 22px;
      font-weight: 600;
    }
    h4 {
      font-size: 16px;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.2s ease;
    }
    a:hover {
      color: var(--primary-dark);
    }

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 按钮全局 */
    .btn-primary {
      background: var(--primary);
      color: var(--white);
      border-radius: var(--radius-sm);
      padding: 14px 32px;
      font-weight: 600;
      font-size: 16px;
      text-decoration: none;
      display: inline-block;
      border: none;
      transition: background 0.25s ease, transform 0.15s ease;
      cursor: pointer;
      box-shadow: 0 4px 10px rgba(233,64,95,0.2);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      color: white;
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      border-radius: var(--radius-sm);
      padding: 12px 30px;
      font-weight: 600;
      font-size: 16px;
      text-decoration: none;
      display: inline-block;
      transition: all 0.25s ease;
    }
    .btn-outline:hover {
      background: rgba(233,64,95,0.08);
      border-color: var(--primary-dark);
      color: var(--primary-dark);
    }

    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(27,29,42,0.92);
      backdrop-filter: blur(12px);
      z-index: 100;
      padding: 10px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }
    .logo {
      font-family: var(--font-title);
      font-size: 26px;
      font-weight: 700;
      color: white;
      letter-spacing: 1px;
    }
    .logo span {
      color: var(--primary);
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .nav-links a {
      color: rgba(255,255,255,0.85);
      font-weight: 500;
      font-size: 16px;
      padding-bottom: 6px;
      border-bottom: 3px solid transparent;
      transition: 0.2s;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: white;
      border-bottom-color: var(--primary);
    }
    .mega-trigger {
      cursor: pointer;
      color: white;
      font-size: 22px;
      margin-left: 8px;
    }
    .mega-panel {
      display: none;
      position: absolute;
      top: 70px;
      right: 24px;
      background: white;
      border-radius: var(--radius-md);
      box-shadow: 0 20px 40px rgba(0,0,0,0.18);
      padding: 24px;
      width: 320px;
      z-index: 110;
    }
    .mega-panel.active {
      display: block;
    }
    .mega-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .mega-card {
      background: var(--light-bg);
      border-radius: var(--radius-sm);
      padding: 12px;
      text-align: center;
      font-weight: 500;
      color: var(--dark);
    }
    .hamburger {
      display: none;
      font-size: 26px;
      color: white;
      cursor: pointer;
    }

    /* Hero */
    .hero {
      background: linear-gradient(135deg, #1B1D2A 0%, #2D1E3C 70%, #E9405F 100%);
      padding: 140px 0 100px;
      color: white;
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: "";
      position: absolute;
      top:0;left:0;right:0;bottom:0;
      background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
      background-size: 30px 30px;
      pointer-events: none;
    }
    .hero-content {
      display: flex;
      align-items: center;
      gap: 40px;
    }
    .hero-text {
      flex: 1;
    }
    .hero-badges {
      display: flex;
      gap: 12px;
      margin: 24px 0;
    }
    .badge {
      background: var(--secondary);
      color: var(--dark);
      border-radius: var(--radius-full);
      padding: 6px 16px;
      font-weight: 700;
      font-size: 14px;
      font-family: var(--font-num);
    }
    .hero-image {
      flex: 1;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }
    .hero-image img {
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    /* 指标看板 */
    .stats-board {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 32px;
      margin: -40px auto 80px;
      box-shadow: var(--shadow-sm);
      display: flex;
      justify-content: space-around;
      flex-wrap: wrap;
    }
    .stat-item {
      text-align: center;
      padding: 0 16px;
    }
    .stat-number {
      font-family: var(--font-num);
      font-size: 40px;
      font-weight: 700;
      color: var(--primary);
    }

    /* 服务卡片 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-top: 40px;
    }
    .service-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      text-align: left;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .service-icon {
      width: 64px;
      height: 64px;
      background: rgba(233,64,95,0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-size: 28px;
      color: var(--primary);
    }

    /* 结果对比 */
    .compare-wrapper {
      display: flex;
      gap: 30px;
      margin: 40px 0;
    }
    .compare-card {
      flex:1;
      background: white;
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }
    .compare-card.before {
      border-left: 6px solid #ccc;
    }
    .compare-card.after {
      border-left: 6px solid var(--success);
    }

    /* FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 30px;
    }
    .faq-item {
      background: white;
      border-radius: var(--radius-md);
      padding: 16px 24px;
      box-shadow: var(--shadow-sm);
      cursor: pointer;
    }
    .faq-question {
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 表单区域 */
    .cta-section {
      background: linear-gradient(135deg, #1B1D2A, #2D1E3C, #E9405F);
      padding: 80px 0;
    }
    .form-card {
      background: white;
      border-radius: var(--radius-lg);
      padding: 40px;
      max-width: 600px;
      margin: 0 auto;
    }

    /* 页脚 */
    .footer {
      background: var(--dark);
      color: var(--text-light);
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
      gap: 40px;
    }

    @media (max-width: 1024px) {
      .service-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .hero-content { flex-direction: column; }
      .service-grid { grid-template-columns: 1fr; }
      .faq-grid { grid-template-columns: 1fr; }
      .compare-wrapper { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }