/* roulang page: index */
:root {
      --primary-deep-green: #1B5E20;
      --primary-dark-green: #0F2A12;
      --accent-gold: #C8A951;
      --bg-warm: #F7F6F3;
      --bg-white: #FFFFFF;
      --text-dark: #1E1E1E;
      --text-muted: #5A5A5A;
      --border-light: #E8E6E1;
      --card-shadow: 0 4px 14px rgba(0,0,0,0.04);
      --card-shadow-hover: 0 14px 32px rgba(0,0,0,0.08);
      --radius-lg: 12px;
      --radius-md: 8px;
      --font-sans: 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
      --font-number: 'Inter', 'Noto Sans SC', sans-serif;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-dark);
      line-height: 1.7;
      font-size: 16px;
      font-weight: 400;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    h1, h2, h3, h4 {
      font-weight: 700;
      letter-spacing: -0.3px;
    }

    p {
      margin-bottom: 0.8rem;
      color: var(--text-muted);
    }

    a {
      color: var(--primary-deep-green);
      text-decoration: none;
      transition: color 0.2s;
    }

    a:hover {
      color: #144018;
      text-decoration: underline;
    }

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

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

    /* 吸顶导航 - 资讯门户风格 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      transition: all 0.3s ease;
      background: transparent;
    }

    .brand-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 48px;
      padding: 0 24px;
      color: white;
      background: transparent;
      transition: background 0.3s, height 0.3s;
    }

    .logo-text {
      font-size: 1.5rem;
      font-weight: 700;
      letter-spacing: 1px;
      color: inherit;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .logo-icon {
      width: 32px;
      height: 32px;
      background: var(--accent-gold);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0F2A12;
      font-weight: 700;
      font-size: 18px;
    }

    .brand-actions {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .search-toggle {
      background: none;
      border: none;
      color: inherit;
      font-size: 1.3rem;
      cursor: pointer;
      padding: 5px;
    }

    .hot-tags {
      font-size: 0.85rem;
      color: rgba(255,255,255,0.85);
      display: flex;
      gap: 12px;
      cursor: default;
    }

    .hot-tags span {
      cursor: pointer;
      border-bottom: 1px solid transparent;
      transition: 0.2s;
    }

    .hot-tags span:hover {
      border-bottom-color: var(--accent-gold);
    }

    .channel-row {
      background: rgba(247,246,243,0.92);
      backdrop-filter: blur(14px);
      height: 44px;
      display: flex;
      align-items: center;
      padding: 0 24px;
      border-bottom: 1px solid rgba(255,255,255,0.25);
      transition: all 0.3s;
    }

    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
      margin: 0;
      font-weight: 500;
      font-size: 0.95rem;
    }

    .nav-links a {
      color: #1E1E1E;
      padding: 8px 0;
      border-bottom: 2px solid transparent;
    }

    .nav-links a:hover {
      color: var(--primary-deep-green);
      border-bottom-color: var(--accent-gold);
      text-decoration: none;
    }

    /* 滚动合并吸顶 */
    .site-header.scrolled .brand-row {
      background: var(--primary-dark-green);
    }
    .site-header.scrolled .channel-row {
      height: 0;
      overflow: hidden;
      padding: 0;
      opacity: 0;
      border: none;
    }
    .site-header.scrolled .brand-row {
      height: 64px;
    }

    .search-bar-expanded {
      position: absolute;
      top: 100%;
      left: 0;
      width: 100%;
      background: white;
      padding: 16px 24px;
      box-shadow: 0 8px 20px rgba(0,0,0,0.08);
      display: none;
      align-items: center;
      gap: 12px;
      z-index: 200;
    }

    .search-bar-expanded.active {
      display: flex;
    }

    .search-bar-expanded input {
      flex: 1;
      padding: 12px 16px;
      border: 1px solid var(--border-light);
      border-radius: 8px;
      font-size: 1rem;
    }

    .search-close {
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: #333;
    }

    /* Hero */
    #hero {
      background: var(--primary-dark-green);
      color: white;
      padding: 140px 0 100px;
      position: relative;
      overflow: hidden;
    }

    .hero-grid {
      display: flex;
      align-items: center;
      gap: 60px;
      position: relative;
      z-index: 2;
    }

    .hero-left {
      flex: 1 1 50%;
    }

    .hero-right {
      flex: 1 1 50%;
      position: relative;
      border-radius: 20px;
      overflow: hidden;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 380px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    }

    .hero-right::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to right, rgba(15,42,18,0.7), rgba(15,42,18,0.2));
    }

    .hero-title {
      font-size: 3.2rem;
      font-weight: 700;
      line-height: 1.15;
      margin-bottom: 1.2rem;
    }

    .hero-sub {
      font-size: 1.2rem;
      opacity: 0.9;
      max-width: 480px;
      margin-bottom: 2rem;
    }

    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: var(--primary-deep-green);
      color: white;
      padding: 14px 32px;
      border-radius: 8px;
      font-weight: 600;
      border: none;
      transition: 0.25s;
      display: inline-block;
      text-align: center;
    }

    .btn-primary:hover {
      background: #144018;
      transform: scale(1.03);
      color: white;
      text-decoration: none;
    }

    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--primary-deep-green);
      color: var(--primary-deep-green);
      padding: 14px 32px;
      border-radius: 8px;
      font-weight: 600;
      transition: 0.25s;
    }

    .btn-outline:hover {
      background: rgba(27,94,32,0.08);
      text-decoration: none;
      color: var(--primary-deep-green);
    }

    .btn-gold {
      background: var(--accent-gold);
      color: #0F2A12;
      font-weight: 700;
    }

    .btn-gold:hover {
      background: #b3923a;
      color: #0F2A12;
    }

    section {
      padding: 120px 0;
    }

    .section-title {
      font-size: 2.25rem;
      text-align: center;
      margin-bottom: 0.4rem;
    }

    .title-decor {
      width: 50px;
      height: 3px;
      background: var(--accent-gold);
      margin: 12px auto 48px;
    }

    /* 卡片网格 */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

    .feature-card {
      background: white;
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.2,0.9,0.4,1);
      position: relative;
      overflow: hidden;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--card-shadow-hover);
    }

    .feature-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; width: 100%; height: 3px;
      background: var(--primary-deep-green);
      transform: translateX(-100%);
      transition: 0.3s;
    }

    .feature-card:hover::before {
      transform: translateX(0);
    }

    .card-icon {
      font-size: 2.2rem;
      color: var(--accent-gold);
      margin-bottom: 18px;
    }

    .scenario-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .scenario-card img {
      border-radius: 12px;
      aspect-ratio: 3/2;
      object-fit: cover;
      transition: transform 0.3s;
    }

    .scenario-card:hover img {
      transform: scale(1.03);
    }

    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .case-card {
      background: #FAFAF8;
      border-radius: var(--radius-lg);
      padding: 28px;
      text-align: center;
    }

    .case-number {
      font-family: var(--font-number);
      font-size: 2.5rem;
      font-weight: 700;
      color: var(--accent-gold);
    }

    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .price-card {
      background: white;
      border-radius: var(--radius-lg);
      padding: 40px 28px;
      text-align: center;
      box-shadow: var(--card-shadow);
    }

    .price-card.featured {
      background: var(--primary-deep-green);
      color: white;
      border: 1.5px solid var(--accent-gold);
      transform: scale(1.03);
    }

    .price-amount {
      font-family: var(--font-number);
      font-size: 3rem;
      font-weight: 700;
    }

    .faq-item {
      border-bottom: 1px solid var(--border-light);
      padding: 18px 0;
    }

    .faq-question {
      font-weight: 600;
      font-size: 1.1rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: 0.4s;
      color: var(--text-muted);
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-top: 12px;
    }

    #contact {
      background: var(--primary-dark-green);
      color: white;
    }

    .footer-cta {
      display: flex;
      gap: 60px;
      align-items: flex-start;
    }

    .footer-form input, .footer-form textarea {
      background: white;
      border-radius: 8px;
      margin-bottom: 14px;
      border: 1px solid #ccc;
    }

    .footer-bottom {
      text-align: center;
      margin-top: 60px;
      color: rgba(255,255,255,0.7);
    }

    @media (max-width: 1024px) {
      .hero-grid { flex-direction: column; }
      .card-grid { grid-template-columns: 1fr; }
      .scenario-row, .case-grid, .pricing-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 640px) {
      .nav-links { display: none; }
      .hero-title { font-size: 2rem; }
    }