/* 主体 */
    .page-main { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

    /* 大横幅 - 全宽深色 */
    .hero {
      background: var(--navy);
      margin: 0 -32px;
      padding: 80px 32px;
      text-align: center;
      color: var(--white);
    }
    .hero h1 {
      font-size: 2.8rem;
      font-weight: 700;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
      line-height: 1.2;
    }
    .hero h1 span { color: var(--gold); }
    .hero p {
      font-size: 1.1rem;
      color: #b0bec5;
      max-width: 600px;
      margin: 0 auto 32px;
      line-height: 1.7;
    }
    .hero-btns { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
    .btn { padding: 14px 32px; border-radius: var(--radius); font-weight: 600; font-size: 0.9rem; letter-spacing: 0.3px; cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
    .btn-gold { background: var(--gold); color: #fff; border: none; }
    .btn-gold:hover { background: var(--gold-hover); }
    .btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
    .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.04); }

    /* 区块 */
    .section { padding: 56px 0; }
    .section-header { text-align: center; margin-bottom: 40px; }
    .section-label { font-size: 0.8rem; font-weight: 600; color: var(--gold); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 8px; }
    .section-heading { font-size: 2rem; font-weight: 700; color: var(--navy); margin-bottom: 12px; }
    .section-sub { font-size: 1rem; color: var(--gray-600); max-width: 500px; margin: 0 auto; }

    /* 产品卡片 */
    .product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .product-card {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: var(--radius);
      overflow: hidden;
      transition: var(--transition);
      text-align: center;
    }
    .product-card:hover { box-shadow: var(--shadow-lg); border-color: #ccc; }
    .product-card-img {
      aspect-ratio: 4/3;
      background: var(--gray-50);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 32px;
      border-bottom: 1px solid var(--gray-200);
    }
    .product-card-img img { max-width: 70%; max-height: 70%; }
    .product-card-body { padding: 20px; }
    .product-card-body h3 { font-size: 1.05rem; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
    .product-card-body h3 a:hover { color: var(--gold); }
    .product-card-body p { font-size: 0.85rem; color: var(--gray-600); margin-bottom: 14px; }
    .btn-sm { padding: 8px 20px; font-size: 0.82rem; background: var(--blue); color: #fff; border: none; border-radius: var(--radius); font-weight: 500; cursor: pointer; display: inline-block; }
    .btn-sm:hover { background: var(--blue-hover); }

    /* 优势 */
    .features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .feature-item { text-align: center; padding: 28px 16px; }
    .feature-icon { width: 56px; height: 56px; background: var(--gray-50); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 1.4rem; }
    .feature-item h4 { font-size: 1rem; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
    .feature-item p { font-size: 0.85rem; color: var(--gray-600); line-height: 1.5; }

    /* CTA */
    .cta-section {
      background: var(--gray-50);
      border-radius: var(--radius);
      padding: 48px;
      text-align: center;
      margin-bottom: 56px;
    }
    .cta-section h2 { font-size: 1.8rem; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
    .cta-section p { color: var(--gray-600); margin-bottom: 24px; }


    /* 响应式 */
    @media (max-width: 1024px) {
      .container, .page-main { padding: 0 20px; }
      .hero { 
          /*margin: 0 -20px; */      
          margin: 0 0; 
          padding: 56px 20px; 
      }
      .hero h1 { font-size: 2.2rem; }
      .mobile-btn { display: block; }
      .main-nav {
        position: fixed;
        top: 0;
        right: -280px;
        width: 260px;
        height: 100vh;
        background: #fff;
        flex-direction: column;
        gap: 0;
        padding: 72px 20px 24px;
        box-shadow: -4px 0 20px rgba(0,0,0,0.1);
        transition: right 0.3s;
        z-index: 101;
        overflow-y: auto;
      }
      .main-nav.active { right: 0; }
      .lang-switch { display: none; }
      .nav-item { width: 100%; border-bottom: 1px solid var(--gray-200); }
      .nav-link { padding: 14px 0; display: flex; justify-content: space-between; width: 100%; }
      .submenu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; display: none; padding-left: 12px; }
      .nav-item.submenu-open .submenu { display: block; }
      .product-grid { grid-template-columns: repeat(2, 1fr); }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 640px) {
      .hero h1 { font-size: 1.8rem; }
      .hero p { font-size: 0.95rem; }
      .section { padding: 40px 0; }
      .section-heading { font-size: 1.5rem; }
      .product-grid { grid-template-columns: 1fr; gap: 16px; }
      .features-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
      .cta-section { padding: 32px 20px; }
      .footer-grid { grid-template-columns: 1fr; gap: 20px; }
      .hero-btns { flex-direction: column; align-items: center; }
      .btn { width: 100%; justify-content: center; max-width: 280px; }
    }