*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft YaHei",sans-serif;}
body{color:#333;line-height:1.6;background:#f8f9fa;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
/* 顶部条 */
.top-bar{background:#124437;color:#fff;padding:8px 0;font-size:13px;}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;}
.top-bar a{color:#fff;margin-left:16px;}
/* 头部 */
header{background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.05);position:sticky;top:0;z-index:100;}
header .container{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;}
.logo h1{font-size:26px;color:#1a5f4e;}
.logo p{font-size:13px;color:#666;letter-spacing:1px;}
nav a{margin-left:28px;font-size:15px;color:#333;transition:.3s;}
nav a:hover,nav a.active{color:#d4af37;}
/* Banner */
.banner{height:520px;background:linear-gradient(rgba(18,68,55,.35),rgba(18,68,55,.45)),url("https://images.unsplash.com/photo-1518684079-3c830dcef090?w=1600") center/cover;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;}
.banner h2{font-size:52px;margin-bottom:20px;letter-spacing:4px;}
.banner p{font-size:18px;max-width:800px;margin:0 auto 32px;opacity:.95;}
.btn{padding:12px 36px;border-radius:30px;display:inline-block;font-size:16px;transition:.3s;}
.btn-gold{background:linear-gradient(135deg,#d4af37,#b8941f);color:#fff;}
.btn-outline{background:rgba(255,255,255,.15);border:1px solid #fff;color:#fff;margin-left:16px;}
/* 信任栏 */
.trust-strip{background:#1a5f4e;color:#fff;padding:28px 0;}
.trust-grid{display:grid;grid-template-columns:repeat(5,1fr);text-align:center;gap:16px;}
.trust-item .icon{font-size:24px;margin-bottom:8px;}
.trust-item .num{font-size:22px;font-weight:bold;color:#d4af37;}
.trust-item .desc{font-size:13px;opacity:.9;}
/* 板块标题 */
.section{padding:60px 0;}
.section-title{display:flex;align-items:center;margin-bottom:32px;}
.section-title h3{font-size:28px;color:#1a5f4e;padding-left:16px;border-left:5px solid #d4af37;}
.section-title .more{margin-left:auto;background:#e8f5ee;color:#1a5f4e;padding:6px 16px;border-radius:20px;font-size:14px;}
/* 卡片 */
.cards.row-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.06);transition:.3s;}
.card:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(0,0,0,.1);}
.card img{height:220px;width:100%;object-fit:cover;}
.card-body{padding:20px;}
.card-body h4{font-size:18px;color:#333;margin-bottom:8px;}
.card-body p{font-size:14px;color:#888;margin-bottom:12px;}
.card-body .price{color:#c0392b;font-size:20px;font-weight:bold;margin-bottom:16px;}
.btn-block{display:block;text-align:center;background:linear-gradient(135deg,#d4af37,#b8941f);color:#fff;border-radius:8px;padding:10px 0;}
/* 两栏布局 */
.two-col{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:start;}
.main-col{background:#fff;border-radius:12px;padding:32px;box-shadow:0 4px 15px rgba(0,0,0,.06);}
.side-col{position:sticky;top:90px;}
.book-panel{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 15px rgba(0,0,0,.06);}
.book-panel h3{color:#1a5f4e;margin-bottom:16px;font-size:20px;}
.form-group{margin-bottom:16px;}
.form-group label{display:block;font-size:14px;color:#666;margin-bottom:6px;}
.form-group input,.form-group textarea{width:100%;padding:10px;border:1px solid #eee;border-radius:6px;font-size:14px;}
/* 页脚 */
footer{background:#124437;color:#fff;padding:48px 0 20px;}
footer .container{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-bottom:24px;}
footer h4{margin-bottom:12px;color:#d4af37;}
footer p{font-size:14px;opacity:.85;line-height:2;}
.beian{text-align:center;font-size:13px;opacity:.7;border-top:1px solid rgba(255,255,255,.1);padding-top:16px;}
/* 悬浮按钮 */
.float-btn{position:fixed;right:20px;bottom:80px;display:flex;flex-direction:column;gap:12px;}
.float-btn .call,.float-btn .submit{padding:12px 20px;border-radius:8px;color:#fff;text-align:center;box-shadow:0 4px 12px rgba(0,0,0,.15);}
.float-btn .call{background:#1a5f4e;}
.float-btn .submit{background:linear-gradient(135deg,#d4af37,#b8941f);}
/* 移动端适配 */
@media(max-width:768px){
  nav{display:none;}
  .banner{height:380px;}
  .banner h2{font-size:32px;}
  .cards.row-3{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .two-col{grid-template-columns:1fr;}
  .side-col{position:static;}
  footer .container{grid-template-columns:1fr;}
}