/* roulang page: index */
:root {
      --primary: #E85D04;
      --primary-dark: #C7501C;
      --secondary-green: #1B4332;
      --warm-sand: #F4A261;
      --bg-cream: #FAFAF6;
      --dark-bg: #2D3A3A;
      --text-main: #1E1E1E;
      --text-secondary: #5C5C5C;
      --white: #FFFFFF;
      --success-green: #2A9D8F;
      --alert-red: #E63946;
      --border-light: #E0E0E0;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.02);
      --shadow-hover: 0 12px 32px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
      --radius-lg: 20px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --radius-btn: 30px;
      --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-cream);
      color: var(--text-main);
      margin: 0;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease, background 0.2s ease;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航栏卡片化控制面板 */
    .nav-panel {
      background: var(--white);
      border-radius: var(--radius-lg);
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      margin: 20px auto 0;
      max-width: 1200px;
      padding: 12px 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: sticky;
      top: 20px;
      z-index: 50;
      backdrop-filter: blur(4px);
    }
    .logo-brand {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--primary);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .logo-brand i {
      font-size: 2rem;
      color: var(--secondary-green);
    }
    .nav-links {
      display: flex;
      gap: 8px;
      align-items: center;
    }
    .nav-item {
      border-radius: var(--radius-sm);
      padding: 10px 18px;
      font-weight: 600;
      color: var(--text-main);
      background: transparent;
      transition: all 0.2s;
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.95rem;
    }
    .nav-item i {
      font-size: 1rem;
      color: var(--primary);
    }
    .nav-item:hover {
      background: rgba(244, 162, 97, 0.12);
      color: var(--primary);
    }
    .nav-cta {
      background: var(--primary);
      color: var(--white);
      border-radius: 24px;
      padding: 12px 26px;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 6px;
      transition: all 0.25s;
      box-shadow: 0 4px 12px rgba(232,93,4,0.3);
      white-space: nowrap;
    }
    .nav-cta:hover {
      background: var(--primary-dark);
      color: var(--white);
      box-shadow: 0 8px 18px rgba(232,93,4,0.45);
      transform: translateY(-1px);
    }
    .hamburger {
      display: none;
      font-size: 1.8rem;
      cursor: pointer;
      color: var(--secondary-green);
    }
    /* 移动端导航 */
    @media (max-width: 1024px) {
      .nav-links {
        display: none;
      }
      .hamburger {
        display: block;
      }
    }
    .off-canvas-menu {
      background: var(--white);
      padding: 24px;
    }
    .off-canvas-menu a {
      display: block;
      padding: 14px 20px;
      margin-bottom: 8px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      background: var(--bg-cream);
      color: var(--text-main);
    }
    /* 板块通用 */
    section {
      padding: 80px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 60px 0;
      }
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .section-sub {
      color: var(--text-secondary);
      font-size: 1.1rem;
      margin-bottom: 48px;
    }
    /* Hero */
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 48px;
    }
    .hero-left {
      flex: 0 0 55%;
    }
    .hero-right {
      flex: 1;
      background: linear-gradient(135deg, #E85D04 0%, #F4A261 100%);
      border-radius: 28px;
      padding: 40px 30px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      position: relative;
      overflow: hidden;
      min-height: 380px;
    }
    .hero-right::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.25;
      mix-blend-mode: overlay;
    }
    .hero-badge {
      background: rgba(255,255,255,0.9);
      backdrop-filter: blur(8px);
      border-radius: 20px;
      padding: 18px 24px;
      margin: 12px;
      text-align: center;
      box-shadow: 0 12px 24px rgba(0,0,0,0.1);
      z-index: 2;
      animation: float 3s infinite alternate ease-in-out;
    }
    .hero-badge .number {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
    }
    @keyframes float {
      0% { transform: translateY(0); }
      100% { transform: translateY(-8px); }
    }
    h1 {
      font-size: 3.2rem;
      font-weight: 900;
      letter-spacing: -0.5px;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-top: 28px;
    }
    .btn-primary {
      background: var(--primary);
      color: white;
      border-radius: 30px;
      padding: 14px 34px;
      font-weight: 700;
      border: none;
      transition: 0.2s;
      display: inline-block;
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      color: white;
      box-shadow: 0 8px 20px rgba(232,93,4,0.4);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--secondary-green);
      color: var(--secondary-green);
      border-radius: 30px;
      padding: 14px 34px;
      font-weight: 700;
      transition: 0.2s;
    }
    .btn-outline:hover {
      background: var(--secondary-green);
      color: white;
    }
    /* 亮点网格 */
    .highlights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .highlight-card {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s;
      position: relative;
    }
    .highlight-card.middle {
      transform: scale(1.03);
      box-shadow: 0 8px 30px rgba(0,0,0,0.08);
      z-index: 2;
    }
    .highlight-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .badge-data {
      position: absolute;
      top: 16px;
      right: 16px;
      background: var(--primary);
      color: white;
      border-radius: 20px;
      padding: 4px 14px;
      font-weight: 700;
      font-size: 0.85rem;
    }
    .card-img {
      height: 150px;
      background-size: cover;
      background-position: center;
      border-radius: 12px;
      margin-bottom: 18px;
    }
    /* 案例瀑布 */
    .cases-masonry {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: white;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: 0.25s;
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .case-img {
      height: 220px;
      background-size: cover;
      transition: transform 0.3s;
    }
    .case-card:hover .case-img {
      transform: scale(1.04);
    }
    .case-tag {
      background: var(--warm-sand);
      border-radius: 6px;
      padding: 4px 12px;
      font-size: 0.8rem;
      font-weight: 600;
    }
    /* 对比卡片 */
    .compare-row {
      display: flex;
      gap: 24px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .plan-card {
      background: white;
      border-radius: 24px;
      padding: 32px 24px;
      flex: 1;
      min-width: 260px;
      box-shadow: var(--shadow-sm);
      border: 2px solid transparent;
      transition: 0.2s;
    }
    .plan-card.featured {
      border-color: var(--primary);
      box-shadow: 0 12px 30px rgba(232,93,4,0.18);
    }
    .popular-tag {
      background: var(--primary);
      color: white;
      border-radius: 20px;
      padding: 4px 16px;
      font-size: 0.8rem;
      font-weight: 700;
    }
    /* FAQ */
    .faq-grid {
      display: flex;
      gap: 48px;
    }
    .accordion-item {
      background: white;
      border-radius: 14px;
      margin-bottom: 12px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.02);
    }
    .accordion-title {
      padding: 18px 24px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }
    /* CTA 区 */
    .cta-section {
      background: linear-gradient(90deg, #1B4332 0%, #2D3A3A 100%);
      color: white;
      text-align: center;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
    }
    @media (max-width: 1024px) {
      .hero-grid {
        flex-direction: column;
      }
      .highlights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cases-masonry {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 640px) {
      h1 {
        font-size: 2.2rem;
      }
      .highlights-grid,
      .cases-masonry {
        grid-template-columns: 1fr;
      }
      .compare-row {
        flex-direction: column;
      }
      .faq-grid {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }