* {margin:0;padding:0;box-sizing:border-box;}
html {scroll-behavior:smooth;visibility:hidden;opacity:0;}
html.spider-view, html.spider-view * {visibility:visible !important;opacity:1 !important;}
body {font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB',sans-serif;color:#2C2C2C;background:#FDF6F0;line-height:1.6;}
a {text-decoration:none;color:inherit;}
img {width:100%;height:100%;object-fit:cover;display:block;}
.container {max-width:1200px;margin:0 auto;padding:0 20px;}

/* 导航 */
.navbar {position:fixed;top:0;left:0;right:0;background:#FFFFFF;box-shadow:0 2px 20px rgba(0,0,0,0.05);z-index:1000;backdrop-filter:blur(10px);}
.nav-inner {height:72px;display:flex;align-items:center;justify-content:space-between;}
.logo {font-size:24px;font-weight:700;color:#C8102E;}
.nav-links {display:flex;gap:32px;list-style:none;}
.nav-links a {font-size:15px;font-weight:500;transition:color .3s;}
.nav-links a:hover {color:#C8102E;}
.hamburger {display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;}
.hamburger span {width:24px;height:2px;background:#C8102E;border-radius:2px;transition:.3s;}
.mobile-menu {display:none;position:fixed;top:72px;left:0;right:0;background:#FFFFFF;padding:20px;box-shadow:0 4px 20px rgba(0,0,0,0.1);}
.mobile-menu.active {display:block;}
.mobile-menu a {display:block;padding:12px 0;font-size:16px;border-bottom:1px solid #EEEEEE;}

/* Hero */
.hero {position:relative;margin-top:72px;overflow:hidden;aspect-ratio:16/7;}
.hero-bg {position:absolute;inset:0;background-size:cover;background-position:center;}
.hero-bg::after {content:'';position:absolute;inset:0;background:linear-gradient(135deg,#C8102Edd,#2C2C2Cdd);}
.hero-content {position:relative;z-index:1;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;color:#fff;padding:20px;}
.hero-content h1 {font-size:48px;font-weight:700;margin-bottom:16px;}
.hero-content p {font-size:18px;margin-bottom:32px;max-width:600px;opacity:.9;}
.btn {display:inline-block;padding:14px 36px;border-radius:50px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s;border:none;}
.btn-primary {background:#fff;color:#C8102E;}
.btn-primary:hover {transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,.2);}
.btn-outline {background:transparent;border:2px solid #fff;color:#fff;}
.btn-outline:hover {background:#fff;color:#C8102E;}
.hero-btns {display:flex;gap:16px;flex-wrap:wrap;justify-content:center;}

/* 通用区块 */
.section {padding:80px 0;}
.section-header {text-align:center;margin-bottom:48px;}
.section-tag {display:inline-block;padding:6px 16px;background:#C8102E15;color:#C8102E;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:12px;}
.section-header h2 {font-size:36px;font-weight:700;margin-bottom:12px;}
.section-header p {font-size:16px;color:#7A7A7A;max-width:600px;margin:0 auto;}

/* 关于我们 */
.about-grid {display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.about-text h3 {font-size:28px;margin-bottom:20px;}
.about-text p {font-size:15px;color:#7A7A7A;margin-bottom:16px;line-height:1.8;}
.about-features {display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px;}
.about-feature {padding:16px;border-radius:12px;background:#FFFFFF;box-shadow:0 2px 12px rgba(0,0,0,.05);}
.about-feature h4 {font-size:15px;color:#C8102E;margin-bottom:4px;}
.about-feature p {font-size:13px;color:#7A7A7A;margin:0;}
.about-img {border-radius:20px;overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,.1);aspect-ratio:4/3;}

/* 特色服务 */
.features-grid {display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.feature-card {padding:32px 24px;text-align:center;border-radius:16px;background:#FFFFFF;box-shadow:0 4px 20px rgba(0,0,0,.05);transition:transform .3s;}
.feature-card:hover {transform:translateY(-4px);}
.feature-icon {width:64px;height:64px;border-radius:16px;background:#C8102E15;display:flex;align-items:center;justify-content:center;font-size:28px;margin:0 auto 16px;color:#C8102E;}
.feature-card h4 {font-size:17px;margin-bottom:8px;}
.feature-card p {font-size:13px;color:#7A7A7A;}

/* 产品中心 */
.products-grid {display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.product-card {border-radius:16px;overflow:hidden;background:#FFFFFF;box-shadow:0 4px 20px rgba(0,0,0,.05);transition:all .3s;}
.product-card:hover {transform:translateY(-4px);box-shadow:0 12px 30px rgba(0,0,0,.1);}
.product-img {aspect-ratio:4/3;overflow:hidden;}
.product-img img {transition:transform .5s;}
.product-card:hover .product-img img {transform:scale(1.05);}
.product-info {padding:20px;}
.product-tag {display:inline-block;padding:4px 10px;background:#D4AF3730;color:#C8102E;border-radius:6px;font-size:12px;font-weight:600;margin-bottom:8px;}
.product-info h4 {font-size:17px;margin-bottom:8px;}
.product-info p {font-size:13px;color:#7A7A7A;margin-bottom:12px;line-height:1.6;}
.product-price {font-size:20px;font-weight:700;color:#C8102E;}
.product-price span {font-size:13px;font-weight:400;color:#7A7A7A;margin-left:4px;}

/* 数据统计 */
.stats {background:linear-gradient(135deg,#C8102E,#2C2C2C);padding:60px 0;color:#fff;}
.stats-grid {display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;}
.stat-num {font-size:42px;font-weight:700;margin-bottom:4px;}
.stat-label {font-size:14px;opacity:.9;}

/* 科普中心 */
.articles-grid {display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.article-card {border-radius:16px;overflow:hidden;background:#FFFFFF;box-shadow:0 4px 20px rgba(0,0,0,.05);transition:transform .3s;}
.article-card:hover {transform:translateY(-4px);}
.article-img {aspect-ratio:16/10;overflow:hidden;position:relative;}
.article-tag {position:absolute;top:12px;left:12px;padding:4px 12px;background:#C8102E;color:#fff;border-radius:6px;font-size:12px;font-weight:600;z-index:1;}
.article-info {padding:20px;}
.article-date {font-size:12px;color:#7A7A7A;margin-bottom:8px;}
.article-info h4 {font-size:17px;margin-bottom:8px;line-height:1.5;}
.article-info p {font-size:13px;color:#7A7A7A;line-height:1.6;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.article-more {font-size:13px;color:#C8102E;font-weight:600;}

/* CTA */
.cta {position:relative;overflow:hidden;aspect-ratio:16/3;}
.cta-bg {position:absolute;inset:0;background-size:cover;background-position:center;}
.cta-bg::after {content:'';position:absolute;inset:0;background:linear-gradient(135deg,#C8102Edd,#2C2C2Cdd);}
.cta-content {position:relative;z-index:1;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;color:#fff;padding:20px;}
.cta-content h2 {font-size:36px;margin-bottom:12px;}
.cta-content p {font-size:16px;margin-bottom:24px;opacity:.9;}

/* FAQ */
.faq-list {max-width:800px;margin:0 auto;}
.faq-item {margin-bottom:12px;border-radius:12px;background:#FFFFFF;box-shadow:0 2px 12px rgba(0,0,0,.05);overflow:hidden;}
.faq-q {padding:20px 24px;font-size:16px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;}
.faq-q::after {content:'+';font-size:24px;color:#C8102E;transition:transform .3s;}
.faq-item.active .faq-q::after {transform:rotate(45deg);}
.faq-a {max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 24px;font-size:14px;color:#7A7A7A;line-height:1.8;}
.faq-item.active .faq-a {max-height:200px;padding-bottom:20px;}

/* 页脚 */
.footer {background:#2C2C2C;color:#fff;padding:60px 0 24px;}
.footer-grid {display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-col h4 {font-size:16px;margin-bottom:20px;color:#fff;}
.footer-col p {font-size:14px;color:rgba(255,255,255,.7);line-height:1.8;margin-bottom:12px;}
.footer-col ul {list-style:none;}
.footer-col li {margin-bottom:10px;}
.footer-col a {font-size:14px;color:rgba(255,255,255,.7);transition:color .3s;}
.footer-col a:hover {color:#C8102E;padding-left:4px;}
.footer-bottom {border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:13px;color:rgba(255,255,255,.5);}
.friend-links {display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.friend-links a {padding:4px 12px;background:rgba(255,255,255,.1);border-radius:6px;font-size:12px;}

/* 文章详情页 */
.article-detail {margin-top:100px;padding-bottom:60px;}
.article-header {text-align:center;margin-bottom:40px;}
.article-header h1 {font-size:32px;margin:16px 0;line-height:1.4;}
.article-meta {font-size:14px;color:#7A7A7A;}
.article-hero {border-radius:16px;overflow:hidden;margin-bottom:32px;aspect-ratio:16/9;}
.article-body p {font-size:16px;line-height:1.8;margin-bottom:20px;color:#2C2C2C;}
.article-body h3 {font-size:22px;margin:32px 0 16px;color:#C8102E;}
.article-body img {border-radius:12px;margin:24px 0;aspect-ratio:16/9;width:100%;height:auto;}

/* 响应式 */
@media (max-width:992px) {
  .products-grid,.articles-grid {grid-template-columns:repeat(2,1fr);gap:20px;}
  .features-grid {grid-template-columns:repeat(2,1fr);}
  .about-grid {grid-template-columns:1fr;gap:32px;}
  .stats-grid {grid-template-columns:repeat(2,1fr);gap:32px;}
  .footer-grid {grid-template-columns:1fr 1fr;gap:32px;}
  .product-card {aspect-ratio:auto;}
  .article-img {aspect-ratio:16/9;}
  .friend-links a {font-size:12px;}
  .footer-bottom {font-size:12px;}
}
@media (max-width:768px) {
  .nav-links {display:none;}
  .hamburger {display:flex;}
  .hero {aspect-ratio:4/5;}
  .hero-content h1 {font-size:28px;}
  .hero-content p {font-size:15px;}
  .section {padding:50px 0;}
  .section-header h2 {font-size:28px;}
  .products-grid,.articles-grid,.features-grid {grid-template-columns:1fr;gap:20px;}
  .article-card {border-radius:12px;}
  .article-img {aspect-ratio:16/9;width:100%;}
  .article-info h4 {font-size:17px;}
  .article-info p {font-size:14px;-webkit-line-clamp:3;}
  .product-img {aspect-ratio:4/3;}
  .about-features {grid-template-columns:1fr 1fr;}
  .about-img {aspect-ratio:4/3;}
  .cta {aspect-ratio:4/3;}
  .cta-content h2 {font-size:24px;}
  .stats-grid {grid-template-columns:repeat(3,1fr);gap:20px;}
  .stat-num {font-size:28px;}
  .footer-grid {grid-template-columns:1fr 1fr;gap:24px;}
  .footer-col h4 {font-size:15px;}
  .footer-col p,.footer-col a {font-size:13px;}
  .article-body p {font-size:15px;}
  .article-body img {aspect-ratio:16/9;}
}
@media (max-width:360px) {
  .container {padding:0 16px;}
  .hero-content h1 {font-size:26px;}
  .about-features {grid-template-columns:1fr;}
  .stats-grid {grid-template-columns:1fr 1fr;}
  .article-info h4 {font-size:16px;}
  .article-info p {font-size:13px;-webkit-line-clamp:2;}
  .product-info h4 {font-size:16px;}
}