/* roulang page: index */
:root {
      --primary-deep-green: #0A4D2E;
      --primary-dark-green: #06381F;
      --accent-gold: #D4AF37;
      --bg-warm-white: #F9F9F6;
      --card-white: #FFFFFF;
      --text-dark: #1e1e1e;
      --text-body: #333333;
      --text-muted: #5f5f5f;
      --border-light: rgba(10, 77, 46, 0.08);
      --shadow-card: 0 12px 28px -8px rgba(10, 77, 46, 0.12);
      --shadow-card-hover: 0 24px 44px -12px rgba(10, 77, 46, 0.25);
      --radius-card: 24px;
      --radius-button: 50px;
      --font-sans: 'Noto Sans SC', 'Inter', system-ui, -apple-system, sans-serif;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm-white);
      color: var(--text-body);
      line-height: 1.8;
      font-weight: 400;
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }

    /* 导航栏 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      z-index: 50;
      border-bottom: 1px solid var(--border-light);
      transition: box-shadow 0.3s ease;
    }
    .navbar.scrolled {
      box-shadow: 0 8px 24px rgba(10, 77, 46, 0.08);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      color: var(--primary-deep-green);
      font-weight: 900;
      font-size: 1.8rem;
      letter-spacing: -0.02em;
    }
    .logo i {
      font-size: 2rem;
      color: var(--accent-gold);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      text-decoration: none;
      color: var(--text-body);
      font-weight: 500;
      font-size: 1rem;
      transition: color 0.2s;
    }
    .nav-links a:hover {
      color: var(--primary-deep-green);
    }
    .btn-subscribe {
      background: var(--accent-gold);
      color: #1e1e1e;
      padding: 12px 28px;
      border-radius: var(--radius-button);
      font-weight: 700;
      text-decoration: none;
      transition: all 0.25s;
      font-size: 0.95rem;
      letter-spacing: 0.3px;
      border: none;
      cursor: pointer;
    }
    .btn-subscribe:hover {
      background: #c9a52b;
      transform: translateY(-2px);
      color: #000;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.8rem;
      color: var(--primary-deep-green);
      cursor: pointer;
    }
    @media (max-width: 1024px) {
      .nav-links {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
    }
    /* 移动端菜单 */
    .mobile-menu {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: var(--primary-deep-green);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 36px;
      transform: translateX(100%);
      transition: transform 0.35s ease;
      z-index: 100;
    }
    .mobile-menu.active {
      transform: translateX(0);
    }
    .mobile-menu a {
      color: white;
      font-size: 1.8rem;
      font-weight: 600;
      text-decoration: none;
    }
    .mobile-menu .btn-subscribe {
      background: var(--accent-gold);
      color: #0A4D2E;
      margin-top: 20px;
    }
    .close-menu {
      position: absolute;
      top: 28px;
      right: 32px;
      background: none;
      border: none;
      color: white;
      font-size: 2.2rem;
      cursor: pointer;
    }

    /* 区块标题 */
    .section-title {
      font-weight: 700;
      font-size: 2.5rem;
      letter-spacing: -0.02em;
      color: var(--primary-deep-green);
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 24px;
    }
    .section-title::before {
      content: '';
      display: inline-block;
      width: 6px;
      height: 38px;
      background: var(--accent-gold);
      border-radius: 4px;
    }

    /* Hero */
    .hero {
      padding: 140px 0 100px;
      display: flex;
      align-items: center;
      gap: 52px;
      flex-wrap: wrap;
      background: radial-gradient(circle at 20% 30%, rgba(10,77,46,0.02) 0%, transparent 70%);
    }
    .hero-left {
      flex: 1 1 480px;
    }
    .hero-tag {
      display: inline-block;
      background: var(--accent-gold);
      color: #0A4D2E;
      font-weight: 700;
      padding: 6px 18px;
      border-radius: 50px;
      font-size: 0.8rem;
      letter-spacing: 1px;
      margin-bottom: 20px;
    }
    .hero h1 {
      font-weight: 900;
      font-size: 3.8rem;
      line-height: 1.2;
      letter-spacing: -0.03em;
      color: var(--primary-deep-green);
      margin-bottom: 22px;
    }
    .hero-sub {
      font-size: 1.2rem;
      color: #4b4b4b;
      margin-bottom: 32px;
      max-width: 500px;
    }
    .hero-buttons {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
    }
    .btn-gold {
      background: var(--accent-gold);
      color: #0A4D2E;
      padding: 16px 36px;
      border-radius: var(--radius-button);
      font-weight: 700;
      text-decoration: none;
      transition: 0.2s;
    }
    .btn-gold:hover { background: #b8942f; }
    .btn-underline {
      background: transparent;
      border-bottom: 2px solid var(--primary-deep-green);
      color: var(--primary-deep-green);
      padding: 16px 8px;
      font-weight: 600;
      text-decoration: none;
    }
    .hero-right {
      flex: 1 1 400px;
      display: flex;
      justify-content: center;
    }
    .hero-image-card {
      background: white;
      border-radius: 40px;
      padding: 16px;
      box-shadow: 0 30px 50px -20px rgba(10,77,46,0.3);
      transform: rotate(-2deg);
      max-width: 100%;
    }
    .hero-image-card img {
      border-radius: 28px;
      width: 100%;
      height: auto;
      display: block;
    }

    /* 痛点/方案交替卡片 */
    .pain-solution {
      display: flex;
      flex-direction: column;
      gap: 40px;
      margin: 100px 0;
    }
    .dialog-card {
      display: flex;
      align-items: center;
      gap: 40px;
      flex-wrap: wrap;
    }
    .dialog-card.reverse {
      flex-direction: row-reverse;
    }
    .card-block {
      flex: 1 1 360px;
      padding: 36px 32px;
      border-radius: 40px;
    }
    .pain-card {
      background: #F2F2EC;
      color: #2d2d2d;
    }
    .solution-card {
      background: var(--primary-deep-green);
      color: white;
    }
    .icon-decor {
      font-size: 2rem;
      margin-bottom: 16px;
    }

    /* 数据徽章 */
    .data-band {
      background: linear-gradient(135deg, #0A4D2E 0%, #06381F 100%);
      padding: 80px 0;
      margin: 80px 0;
    }
    .badge-grid {
      display: flex;
      justify-content: center;
      gap: 40px;
      flex-wrap: wrap;
    }
    .badge-item {
      background: rgba(255,255,255,0.1);
      backdrop-filter: blur(12px);
      border-radius: 36px;
      padding: 32px 48px;
      text-align: center;
      color: white;
    }
    .badge-number {
      font-size: 3.2rem;
      font-weight: 900;
      color: var(--accent-gold);
      font-family: 'Inter', sans-serif;
    }

    /* 证言轮播替代为静态卡片 */
    .testimonials {
      margin: 100px 0;
    }
    .testimonial-cards {
      display: flex;
      gap: 28px;
      overflow-x: auto;
      padding: 16px 0;
    }
    .testimonial-item {
      min-width: 280px;
      background: white;
      border-radius: 28px;
      padding: 28px;
      box-shadow: var(--shadow-card);
    }

    /* FAQ */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin: 60px 0;
    }
    .faq-item {
      background: white;
      border-radius: 20px;
      padding: 20px 24px;
      cursor: pointer;
    }
    .faq-question {
      font-weight: 700;
      color: var(--primary-deep-green);
      display: flex;
      justify-content: space-between;
    }

    /* 最终CTA */
    .final-cta {
      background: var(--accent-gold);
      padding: 80px 0;
      text-align: center;
      margin: 80px 0;
      border-radius: 48px;
    }

    /* 页脚 */
    .footer {
      background: var(--primary-deep-green);
      color: rgba(255,255,255,0.9);
      padding: 64px 0 32px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 40px;
    }
    @media (max-width: 768px) {
      .footer-grid { grid-template-columns: 1fr; }
    }
    .social-icons i {
      font-size: 1.6rem;
      margin-right: 18px;
      color: var(--accent-gold);
    }