/* Reset & Base */
* {margin: 0; padding: 0; box-sizing: border-box;}
html {font-size: 16px;}
body {
  font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Arial', sans-serif;
  background: linear-gradient(135deg, #e9eafc 0%, #b6c1e6 40%, #7b8bd1 100%);
  color: #222;
  position: relative;
  min-height: 100vh;
}
body::before {
  content: '';
  position: fixed;
  left: 0; top: 0; right: 0; bottom: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle at 20% 30%, rgba(255,255,255,0.25) 0, rgba(255,255,255,0) 40%),
              radial-gradient(circle at 80% 70%, rgba(255,255,255,0.18) 0, rgba(255,255,255,0) 50%),
              radial-gradient(circle at 60% 10%, rgba(123,139,209,0.10) 0, rgba(123,139,209,0) 60%);
}
main, header, footer, section, .zceab4container {
  position: relative;
  z-index: 1;
}
img {max-width: 100%; display: block;}
.zceab4container {max-width: 1200px; margin: 0 auto; padding: 0 16px;}

/* Navbar */
.zceab4navbar {background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100;}
.zceab4nav-container {display: flex; align-items: center; justify-content: space-between; height: 64px;}
.zceab4site-title {font-size: 1.8rem; font-weight: bold; color: #2d8cf0; letter-spacing: 2px;}
.zceab4nav-menu a {margin-left: 24px; color: #333; text-decoration: none; font-size: 1rem; transition: color 0.2s;}
.zceab4nav-menu a:hover {color: #2d8cf0;}

/* Hamburger menu for mobile */
.zceab4nav-toggle {display: none;}
.zceab4nav-toggle-label {display: none; cursor: pointer; width: 36px; height: 36px; flex-direction: column; justify-content: center; align-items: center;}
.zceab4nav-toggle-label span {display: block; width: 28px; height: 4px; margin: 4px 0; background: #2d8cf0; border-radius: 2px; transition: 0.3s;}

/* Banner */
.zceab4banner {background: linear-gradient(90deg, #2d8cf0 60%, #57c1eb 100%); color: #fff; padding: 48px 0 32px 0;}
.zceab4banner-content {display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;}
.zceab4banner-text {max-width: 600px;}
.zceab4banner-text h1 {font-size: 2.5rem; margin-bottom: 16px;}
.zceab4banner-text p {font-size: 1.2rem; margin-bottom: 16px;}
.zceab4banner-keywords {display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px;}
.zceab4banner-keywords li {background: rgba(255,255,255,0.2); border-radius: 16px; padding: 6px 16px; font-size: 1rem;}
.zceab4cta-btn {background: #fff; color: #2d8cf0; border: none; border-radius: 24px; padding: 12px 32px; font-size: 1.1rem; font-weight: bold; cursor: pointer; box-shadow: 0 2px 8px rgba(0,0,0,0.08); transition: background 0.2s, color 0.2s;}
.zceab4cta-btn:hover {background: #2d8cf0; color: #fff;}
.zceab4banner-img {max-width: 320px; margin-left: 32px;}

/* Features */
.zceab4features {padding: 48px 0 32px 0;}
.zceab4features h2 {font-size: 2rem; margin-bottom: 32px; text-align: center;}
.zceab4features-list {display: flex; flex-wrap: wrap; gap: 24px; justify-content: center;}
.zceab4feature-card {background: #fff; border-radius: 16px; box-shadow: 0 2px 12px rgba(45,140,240,0.08); padding: 32px 24px; width: 240px; text-align: center; transition: transform 0.2s;}
.zceab4feature-card:hover {transform: translateY(-8px) scale(1.03);}
.zceab4feature-card img {width: 48px; height: 48px; margin-bottom: 16px;}
.zceab4feature-card h3 {font-size: 1.2rem; margin-bottom: 8px; color: #2d8cf0;}
.zceab4feature-card p {font-size: 1rem; color: #555;}
.zceab4features-desc {margin-bottom: 20px;}

/* Products */
.zceab4products {padding: 48px 0 32px 0; background: #f7fafc;}
.zceab4products h2 {font-size: 2rem; margin-bottom: 32px; text-align: center;}
.zceab4product-cards {display: flex; flex-wrap: wrap; gap: 24px; justify-content: center;}
.zceab4product-card {background: #fff; border-radius: 16px; box-shadow: 0 2px 12px rgba(45,140,240,0.08); padding: 32px 24px; width: 30%; min-width: 240px; max-width: 340px; text-align: center; transition: transform 0.2s; position: relative; margin-bottom: 0;}
.zceab4product-card:hover {transform: translateY(-8px) scale(1.03);}
.zceab4product-card img {width: 64px; height: 64px; margin-bottom: 16px;}
.zceab4product-card h3 {font-size: 1.2rem; margin-bottom: 8px; color: #2d8cf0;}
.zceab4product-card p {font-size: 1rem; color: #555; margin-bottom: 12px;}
.zceab4price {display: block; font-size: 1.1rem; color: #e67e22; font-weight: bold; margin-bottom: 16px;}
.zceab4buy-btn {background: #2d8cf0; color: #fff; border: none; border-radius: 24px; padding: 10px 28px; font-size: 1rem; font-weight: bold; cursor: pointer; transition: background 0.2s;}
.zceab4buy-btn:hover {background: #57c1eb;}
.zceab4products-desc {margin-bottom: 20px;}

/* Process */
.zceab4process {padding: 48px 0 32px 0;}
.zceab4process h2 {font-size: 2rem; margin-bottom: 32px; text-align: center;}
.zceab4process-steps {display: flex; flex-wrap: wrap; gap: 24px; justify-content: center;}
.zceab4step-card {background: #fff; border-radius: 16px; box-shadow: 0 2px 12px rgba(45,140,240,0.08); padding: 32px 24px; width: 240px; text-align: center; transition: transform 0.2s; margin-bottom: 0;}
.zceab4step-card:hover {transform: translateY(-8px) scale(1.03);}
.zceab4step-num {display: inline-block; background: #2d8cf0; color: #fff; border-radius: 50%; width: 36px; height: 36px; line-height: 36px; font-size: 1.2rem; margin-bottom: 8px;}
.zceab4step-card p {font-size: 1rem; color: #555;}
.zceab4process-desc {margin-bottom: 20px;}

/* Contact */
.zceab4contact {padding: 48px 0 32px 0; background: #f7fafc;}
.zceab4contact h2 {font-size: 2rem; margin-bottom: 32px; text-align: center;}
.zceab4contact-info {display: flex; flex-wrap: wrap; gap: 24px; justify-content: center;}
.zceab4contact-card {background: #fff; border-radius: 16px; box-shadow: 0 2px 12px rgba(45,140,240,0.08); padding: 32px 24px; width: 260px; text-align: center;}
.zceab4contact-card img {width: 48px; height: 48px; margin-bottom: 16px;}
.zceab4contact-wechat, .zceab4contact-email {color: #2d8cf0; font-weight: bold;}
.zceab4contact-desc {margin-bottom: 20px;}

/* Footer */
.zceab4footer {background: #2d8cf0; color: #fff; text-align: center; padding: 24px 0; font-size: 1rem; margin-top: 32px;}

/* Notice 公告 */
.zceab4notice {background: #fffbe6; padding: 32px 0 16px 0; border-bottom: 1px solid #f5e9c6;}
.zceab4notice h2 {font-size: 1.5rem; margin-bottom: 16px; text-align: center; color: #e67e22;}
.zceab4notice-list {list-style: none; display: flex; flex-wrap: wrap; gap: 18px; justify-content: center;}
.zceab4notice-list li {font-size: 1.05rem; color: #b26a00; background: #fff7d6; border-radius: 12px; padding: 8px 20px; display: flex; align-items: center; box-shadow: 0 1px 4px rgba(230, 126, 34, 0.07);}
.zceab4notice-icon {margin-right: 8px; font-size: 1.2rem;}

/* FAQ */
.zceab4faq {padding: 48px 0 32px 0; background: #f7fafc;}
.zceab4faq h2 {font-size: 2rem; margin-bottom: 32px; text-align: center;}
.zceab4faq-list {display: flex; flex-wrap: wrap; gap: 24px; justify-content: center; max-width: 1200px; margin: 0 auto;}
.zceab4faq-item {background: #fff; border-radius: 16px; box-shadow: 0 2px 12px rgba(45,140,240,0.08); padding: 32px 24px; width: 240px; text-align: left; transition: transform 0.2s; margin-bottom: 0;}
.zceab4faq-item:hover {transform: translateY(-8px) scale(1.03);}
.zceab4faq-item h3 {font-size: 1.1rem; color: #2d8cf0; margin-bottom: 6px;}
.zceab4faq-item p {font-size: 1rem; color: #555;}
.zceab4faq-desc {margin-bottom: 20px;}

/* Reviews 用户评价 */
.zceab4reviews {padding: 48px 0 32px 0;}
.zceab4reviews h2 {font-size: 2rem; margin-bottom: 32px; text-align: center;}
.zceab4review-list {display: flex; flex-wrap: wrap; gap: 24px; justify-content: center;}
.zceab4review-card {background: #fff; border-radius: 16px; box-shadow: 0 2px 12px rgba(45,140,240,0.08); padding: 28px 20px; width: 260px; text-align: center; display: flex; flex-direction: column; align-items: center;}
.zceab4review-card img {width: 48px; height: 48px; border-radius: 50%; margin-bottom: 12px;}
.zceab4review-text {font-size: 1rem; color: #444; margin-bottom: 10px;}
.zceab4review-user {font-size: 0.95rem; color: #888;}
.zceab4reviews-desc {margin-bottom: 20px;}

/* About Us 关于我们 */
.zceab4aboutus {margin-top: 32px; background: #f7fafc; border-radius: 12px; padding: 18px 24px;}
.zceab4aboutus h3 {font-size: 1.1rem; color: #2d8cf0; margin-bottom: 6px;}
.zceab4aboutus p {font-size: 1rem; color: #555;}

/* 新增产品卡片适配 */
.zceab4product-card img {object-fit: contain;}

/* Notice Cards */
.zceab4notice-cards {display: flex; flex-wrap: wrap; gap: 24px; justify-content: center; margin-top: 12px;}
.zceab4notice-card {background: #fff; border-radius: 14px; box-shadow: 0 2px 10px rgba(230,126,34,0.10); display: flex; align-items: center; padding: 18px 28px; min-width: 260px; max-width: 360px; margin-bottom: 0; transition: box-shadow 0.2s;}
.zceab4notice-card:hover {box-shadow: 0 4px 18px rgba(230,126,34,0.16);}
.zceab4notice-card .zceab4notice-icon {font-size: 1.5rem; margin-right: 14px; color: #e67e22;}
.zceab4notice-content {font-size: 1.08rem; color: #b26a00;}

/* Responsive */
@media (max-width: 900px) {
    .zceab4banner-content, .zceab4features-list, .zceab4product-cards, .zceab4process-steps, .zceab4contact-info {
        flex-direction: column;
        align-items: center;
    }
    .zceab4banner-img {margin-left: 0; margin-top: 24px;}
    .zceab4notice-list, .zceab4review-list {
        flex-direction: column;
        align-items: center;
    }
    .zceab4notice-cards {flex-direction: column; align-items: center;}
    .zceab4notice-card {width: 90%; min-width: unset; max-width: unset;}
    .zceab4faq-list {flex-direction: column; align-items: center;}
    .zceab4faq-item {width: 100%; max-width: 600px; padding: 24px 12px;}
    .zceab4feature-card, .zceab4step-card, .zceab4review-card {width: 100%; max-width: 600px; padding: 24px 12px;}
    .zceab4product-cards {gap: 16px;}
    .zceab4nav-menu {position: absolute; top: 64px; left: 0; right: 0; background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.08); flex-direction: column; align-items: flex-start; padding: 16px 0 8px 32px; display: none;}
    .zceab4nav-menu a {margin: 12px 0; font-size: 1.1rem;}
    .zceab4nav-toggle-label {display: flex; position: absolute; right: 16px; top: 16px; z-index: 101;}
    .zceab4nav-toggle:checked + .zceab4nav-toggle-label + .zceab4nav-menu {display: flex;}
    .zceab4nav-container {position: relative;}
}
@media (max-width: 600px) {
    html {font-size: 15px;}
    .zceab4nav-container {flex-direction: column; height: auto; padding: 12px 0;}
    .zceab4nav-menu {margin-top: 8px;}
    .zceab4banner {padding: 32px 0 16px 0;}
    .zceab4features, .zceab4products, .zceab4process, .zceab4contact {padding: 32px 0 16px 0;}
    .zceab4footer {font-size: 0.95rem;}
    .zceab4feature-card, .zceab4step-card, .zceab4faq-item, .zceab4review-card {width: 100%; max-width: 100%; padding: 18px 6px;}
}
@media (max-width: 1100px) {
  .zceab4product-card {width: 45%;}
}
@media (max-width: 700px) {
  .zceab4product-card {width: 90%;}
  .zceab4product-cards {gap: 16px;}
}