/* roulang page: index */
:root {
      --primary: #1B8E3F;
      --primary-light: #2EA853;
      --accent: #F5A623;
      --dark-bg: #0D2B1A;
      --dark-bg-light: #1B4F2D;
      --light-bg: #F7FAF5;
      --white: #FFFFFF;
      --text: #2C3E2D;
      --text-light: #6B7D6C;
      --border: #DDE8DB;
      --shadow-card: 0 2px 12px rgba(13,43,26,0.06);
      --shadow-card-hover: 0 8px 30px rgba(13,43,26,0.12);
      --shadow-btn: 0 6px 20px rgba(27,142,63,0.35);
      --radius-card: 16px;
      --radius-btn: 50px;
      --radius-sm: 12px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
      --font-en: "Inter", "Segoe UI", system-ui, sans-serif;
      --transition: 0.25s ease-in-out;
      --container-max: 1280px;
      --section-gap: 100px;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--light-bg);
      color: var(--text);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    button, .btn {
      cursor: pointer;
      font-family: inherit;
      border: none;
      background: none;
      transition: var(--transition);
    }

    h1, h2, h3, h4 {
      font-weight: 700;
      line-height: 1.25;
    }

    h1 {
      font-size: 48px;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: #1a2e1d;
    }

    h2 {
      font-size: 36px;
      margin-bottom: 16px;
    }

    h3 {
      font-size: 22px;
      font-weight: 600;
    }

    .section-title {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-title h2 {
      display: inline-block;
      position: relative;
    }
    .section-title h2::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      border-radius: 2px;
    }

    /* 导航 */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.95);
      backdrop-filter: blur(12px);
      z-index: 1000;
      border-bottom: 1px solid transparent;
      transition: box-shadow 0.3s, border-color 0.3s;
    }
    .header.scrolled {
      box-shadow: 0 1px 8px rgba(0,0,0,0.05);
      border-color: var(--border);
    }
    .nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 22px;
      color: var(--primary);
      letter-spacing: 0.5px;
    }
    .logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 20px;
      transform: rotate(3deg);
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .nav-links a {
      font-weight: 500;
      color: var(--text);
      transition: color 0.2s;
      position: relative;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width 0.3s;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .btn-capsule {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
      color: white;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(27,142,63,0.25);
      transition: 0.2s;
    }
    .btn-capsule:hover {
      box-shadow: var(--shadow-btn);
      transform: translateY(-1px);
      background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    }
    .menu-toggle {
      display: none;
      font-size: 26px;
      background: none;
      border: none;
      color: var(--primary);
    }

    /* Hero */
    .hero {
      padding: 140px 0 100px;
      background: linear-gradient(180deg, #F7FAF5 0%, #FFFFFF 100%);
    }
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 60px;
    }
    .hero-left {
      flex: 1 1 55%;
    }
    .hero-right {
      flex: 1 1 45%;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: 32px;
      min-height: 420px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    }
    .hero-badge-group {
      display: flex;
      gap: 16px;
      margin-top: 40px;
    }
    .badge {
      background: white;
      border-radius: 20px;
      padding: 12px 18px;
      box-shadow: var(--shadow-card);
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
    }
    .badge i {
      color: var(--accent);
    }
    .btn-group {
      display: flex;
      gap: 16px;
      margin: 32px 0 16px;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, #2EA853 100%);
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      font-size: 17px;
    }
    .btn-outline {
      border: 2px solid var(--primary);
      color: var(--primary);
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 700;
    }

    /* 亮点网格 */
    .advantages {
      padding: var(--section-gap) 0;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 32px 24px;
      box-shadow: var(--shadow-card);
      transition: 0.3s;
    }
    .adv-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-card-hover);
    }
    .icon-circle {
      width: 56px;
      height: 56px;
      background: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 26px;
      margin-bottom: 20px;
    }

    /* 业务领域杂志流 */
    .services {
      padding: var(--section-gap) 0;
    }
    .magazine-layout {
      display: flex;
      gap: 24px;
    }
    .mag-left {
      flex: 1 1 55%;
      background: url('/assets/images/coverpic/cover-1.webp') center/cover;
      border-radius: 24px;
      padding: 40px;
      color: white;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      min-height: 400px;
    }
    .mag-right {
      flex: 1 1 45%;
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .mag-small {
      background: white;
      border-radius: 20px;
      padding: 24px;
      display: flex;
      gap: 20px;
      align-items: center;
    }

    /* 案例瀑布流 */
    .cases {
      padding: var(--section-gap) 0;
    }
    .masonry {
      columns: 3;
      gap: 24px;
    }
    .case-card {
      break-inside: avoid;
      background: white;
      border-radius: 20px;
      overflow: hidden;
      margin-bottom: 24px;
      box-shadow: var(--shadow-card);
    }
    .case-card img {
      width: 100%;
    }

    /* 对比表 */
    .compare {
      padding: var(--section-gap) 0;
    }
    .table-wrap {
      overflow-x: auto;
    }
    table {
      width: 100%;
      border-collapse: collapse;
      background: white;
      border-radius: 20px;
      overflow: hidden;
    }
    th {
      background: var(--dark-bg);
      color: white;
      padding: 18px;
    }
    td {
      padding: 16px;
    }

    /* FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .faq-item {
      background: white;
      border-radius: 16px;
      padding: 20px;
    }

    /* CTA横幅 */
    .cta-banner {
      background: linear-gradient(135deg, #0D2B1A 0%, #1B4F2D 100%);
      padding: 80px 0;
      text-align: center;
      color: white;
    }

    /* 页脚 */
    .footer {
      background: var(--dark-bg);
      color: #B8C9BB;
      padding: 60px 0 20px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
    }

    @media (max-width: 1024px) {
      .grid-3 { grid-template-columns: repeat(2,1fr); }
      .masonry { columns: 2; }
      .magazine-layout { flex-direction: column; }
      .footer-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .menu-toggle { display: block; }
      .hero-grid { flex-direction: column; }
      .grid-3 { grid-template-columns: 1fr; }
      .masonry { columns: 1; }
      .faq-grid { grid-template-columns: 1fr; }
    }