/* ========== 基础 ========== */
:root{
  --gold:#d4af37;
  --gold-2:#e8c96a;
  --bg:#0b0b0d;
  --bg-2:#131317;
  --bg-3:#1a1a20;
  --line:#26262e;
  --text:#e9e9ee;
  --muted:#95959f;
  --white:#ffffff;
  --head-text:#1c1c1c;
  --radius:12px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.75;font-size:15px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:.25s}
a:hover{color:var(--gold)}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.site-main{min-height:60vh}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:8px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.25s;white-space:nowrap;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-primary{background:linear-gradient(135deg,var(--gold-2),var(--gold));color:#1a1a1a}
.btn-primary:hover{filter:brightness(1.08);color:#1a1a1a;transform:translateY(-1px)}
.btn-outline{border-color:var(--gold);color:var(--gold);background:transparent}
.btn-outline:hover{background:var(--gold);color:#1a1a1a}
.btn-outline-light{border-color:#d5d5d8;color:#3a3a3a;background:#fff}
.btn-outline-light:hover{border-color:var(--gold);color:#a8861f}

/* ========== 顶部 ========== */
.site-header{position:sticky;top:0;z-index:999;background:var(--white);box-shadow:0 2px 14px rgba(0,0,0,.16)}
.header-inner{display:flex;align-items:center;gap:28px;height:74px}
.logo img{height:42px;width:auto}
.main-nav{flex:1}
.main-nav > ul{display:flex;align-items:center;gap:4px}
.main-nav > ul > li{position:relative}
.main-nav > ul > li > a{
  display:block;padding:0 18px;line-height:74px;font-size:16px;font-weight:600;color:var(--head-text);
}
.main-nav > ul > li > a.active,
.main-nav > ul > li > a:hover{color:var(--gold)}
.main-nav .arrow{
  display:inline-block;width:6px;height:6px;margin-left:6px;
  border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;
  transform:rotate(45deg) translateY(-2px);
}
.sub-menu{
  position:absolute;left:0;top:100%;min-width:180px;background:#fff;
  border-radius:10px;box-shadow:0 12px 30px rgba(0,0,0,.18);
  padding:8px;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:.22s;border:1px solid #eee;
}
.has-sub:hover .sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.sub-menu li a{display:block;padding:10px 16px;border-radius:6px;color:#333;font-size:14.5px}
.sub-menu li a:hover{background:#faf5e6;color:#a8861f}

.header-actions{display:flex;gap:10px;align-items:center}
.header-qq{background:#f8f8f8;border-top:1px solid #eee}
.header-qq .container{font-size:13.5px;color:#666;padding-top:6px;padding-bottom:6px}
.header-qq a{color:var(--gold);font-weight:600}

.menu-toggle{display:none;width:40px;height:40px;background:none;border:0;cursor:pointer;position:relative}
.menu-toggle span{display:block;width:22px;height:2px;background:#333;margin:5px auto;border-radius:2px;transition:.3s}

/* ========== 横幅 ========== */
.hero{
  position:relative;padding:100px 0 110px;overflow:hidden;
  background:
    radial-gradient(900px 400px at 20% 10%, rgba(212,175,55,.18), transparent 60%),
    radial-gradient(700px 400px at 85% 80%, rgba(212,175,55,.12), transparent 60%),
    linear-gradient(160deg,#0b0b0d,#141419 60%,#0b0b0d);
}
.hero h1{font-size:46px;line-height:1.25;font-weight:800;letter-spacing:1px;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--gold);}
.hero p{font-size:17px;color:var(--muted);max-width:640px;margin-bottom:34px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:70px}
.hero-stats .item{border-left:2px solid var(--gold);padding-left:16px}
.hero-stats b{display:block;font-size:30px;color:var(--gold);line-height:1.2}
.hero-stats span{font-size:13.5px;color:var(--muted)}

/* ========== 通用区块 ========== */
.section{padding:80px 0}
.section-alt{background:var(--bg-2)}
.section-head{text-align:center;margin-bottom:52px}
.section-head h2{font-size:34px;font-weight:800;letter-spacing:.5px}
.section-head h2 span{color:var(--gold)}
.section-head p{color:var(--muted);margin-top:12px;font-size:15.5px}
.section-head::after{
  content:'';display:block;width:56px;height:3px;margin:18px auto 0;
  background:linear-gradient(90deg,var(--gold-2),var(--gold));border-radius:3px;
}

/* ========== 卡片网格 ========== */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

.card{
  background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 26px;transition:.28s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-6px);border-color:rgba(212,175,55,.5);box-shadow:0 18px 40px rgba(0,0,0,.45)}
.card .ico{
  width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(212,175,55,.22),rgba(212,175,55,.06));
  border:1px solid rgba(212,175,55,.35);margin-bottom:20px;font-size:24px;
}
.card h3{font-size:19px;margin-bottom:12px;font-weight:700}
.card p{color:var(--muted);font-size:14.5px}

/* 产品卡片 */
.prod-card{display:block;background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.28s}
.prod-card:hover{transform:translateY(-6px);border-color:rgba(212,175,55,.5)}
.prod-thumb{height:170px;display:flex;align-items:center;justify-content:center;font-size:52px;
  background:linear-gradient(135deg,#1c1c24,#101014);border-bottom:1px solid var(--line)}
.prod-body{padding:24px 22px}
.prod-body h3{font-size:18px;margin-bottom:10px}
.prod-body p{color:var(--muted);font-size:14px}
.prod-more{display:inline-block;margin-top:14px;color:var(--gold);font-size:14px;font-weight:600}

/* ========== 新闻 ========== */
.news-item{
  display:flex;gap:24px;padding:26px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--bg-3);transition:.28s;margin-bottom:20px;
}
.news-item:hover{border-color:rgba(212,175,55,.45);transform:translateX(4px)}
.news-thumb{width:220px;height:140px;flex:0 0 220px;border-radius:10px;overflow:hidden;background:#101014}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-info{flex:1;min-width:0}
.news-info h3{font-size:19px;margin-bottom:10px;font-weight:700}
.news-info h3 a:hover{color:var(--gold)}
.news-info p{color:var(--muted);font-size:14.5px;margin-bottom:12px}
.news-meta{font-size:13px;color:#6f6f78;display:flex;gap:18px;flex-wrap:wrap}

/* ========== 文章详情 ========== */
.article-wrap{max-width:880px;margin:0 auto}
.article-title{font-size:30px;font-weight:800;line-height:1.4;margin-bottom:16px}
.article-meta{color:#6f6f78;font-size:13.5px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:28px}
.article-content{font-size:16px;line-height:1.95;color:#d6d6dd;word-wrap:break-word;overflow-wrap:break-word;white-space:normal}
.article-content img{max-width:100%;height:auto;border-radius:10px;margin:18px 0}
.article-content p{margin-bottom:18px;white-space:pre-wrap;word-wrap:break-word}
.article-content h2,.article-content h3{margin:28px 0 14px;color:#fff}
.article-content ul,.article-content ol{margin:0 0 18px 22px;list-style:disc}
.article-content ol{list-style:decimal}
.article-content a{color:var(--gold);text-decoration:underline}

/* ========== 分页 ========== */
.pager{display:flex;gap:8px;justify-content:center;margin-top:40px;flex-wrap:wrap}
.pager a,.pager span{
  min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  padding:0 14px;border-radius:8px;border:1px solid var(--line);background:var(--bg-3);
  font-size:14px;color:var(--text);
}
.pager a:hover{border-color:var(--gold);color:var(--gold)}
.pager .cur{background:linear-gradient(135deg,var(--gold-2),var(--gold));color:#1a1a1a;border-color:transparent;font-weight:700}

/* ========== 面包屑 ========== */
.breadcrumb{padding:22px 0;font-size:14px;color:var(--muted);border-bottom:1px solid var(--line)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb span{margin:0 8px;opacity:.5}

/* ========== 页面标题条 ========== */
.page-hero{
  padding:70px 0;text-align:center;
  background:radial-gradient(700px 300px at 50% 0,rgba(212,175,55,.14),transparent 65%),var(--bg-2);
  border-bottom:1px solid var(--line);
}
.page-hero h1{font-size:38px;font-weight:800;letter-spacing:1px}
.page-hero p{color:var(--muted);margin-top:12px;font-size:15.5px}

/* ========== 联系页 ========== */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:40px}
.contact-box{background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);padding:34px}
.contact-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px dashed var(--line)}
.contact-item:last-child{border-bottom:0}
.contact-item .ci{width:44px;height:44px;flex:0 0 44px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(212,175,55,.12);border:1px solid rgba(212,175,55,.3);font-size:20px}
.contact-item b{display:block;font-size:15px;margin-bottom:4px}
.contact-item p{color:var(--muted);font-size:14px;word-break:break-all}

/* ========== 表单 ========== */
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:14px;margin-bottom:8px;color:#c9c9d2}
.form-control{
  width:100%;height:48px;padding:0 16px;border-radius:9px;
  border:1px solid var(--line);background:#0f0f13;color:var(--text);font-size:15px;outline:none;transition:.22s;
  font-family:inherit;
}
textarea.form-control{height:auto;min-height:140px;padding:14px 16px;resize:vertical;line-height:1.7}
.form-control:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(212,175,55,.13)}

/* ========== 页脚 ========== */
.site-footer{background:var(--white);color:#333;margin-top:0}
.footer-inner{
  display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1fr;gap:40px;padding:64px 20px 44px;
  max-width:1200px;margin:0 auto;
}
.footer-col h4{font-size:16.5px;font-weight:800;margin-bottom:20px;color:#1a1a1a;position:relative;padding-bottom:12px}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:34px;height:2px;background:var(--gold);border-radius:2px}
.footer-about p{color:#6a6a72;font-size:14px;line-height:1.85}
.footer-links li,.footer-contact li{margin-bottom:11px;font-size:14px;color:#6a6a72}
.footer-links a{color:#5a5a62}
.footer-links a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid #ececec;background:#fafafa}
.footer-bottom-inner{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  padding:20px;font-size:13.5px;color:#7a7a84;
}
.footer-bottom a{color:#7a7a84}
.footer-bottom a:hover{color:var(--gold)}

/* ========== 手机底部固定栏 ========== */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1000;
  background:#fff;padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  gap:12px;box-shadow:0 -2px 14px rgba(0,0,0,.14);
}
.mobile-bar .btn{flex:1;height:46px}

/* ========== 返回顶部 ========== */
.back-top{
  position:fixed;right:22px;bottom:90px;width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold-2),var(--gold));color:#1a1a1a;border:0;cursor:pointer;
  font-size:20px;display:none;align-items:center;justify-content:center;z-index:900;
  box-shadow:0 8px 20px rgba(212,175,55,.35);
}
.back-top.show{display:flex}

/* ========== 响应式 ========== */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr 1fr}
  .hero h1{font-size:38px}
}
@media (max-width:768px){
  body{font-size:14.5px}
  .header-inner{height:62px;gap:14px}
  .logo img{height:34px}
  .header-actions{display:none}
  .menu-toggle{display:block;margin-left:auto}
  .main-nav{
    position:fixed;left:0;top:62px;width:100%;height:calc(100vh - 62px);
    background:#fff;overflow-y:auto;padding:10px 0 40px;
    transform:translateX(-100%);transition:.3s;box-shadow:4px 0 20px rgba(0,0,0,.15);
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav > ul{display:block;padding:0 16px}
  .main-nav > ul > li > a{line-height:52px;padding:0 8px;border-bottom:1px solid #f0f0f0;font-size:16px}
  .sub-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;
    border:0;padding:0 0 0 16px;background:transparent;display:none}
  .has-sub.open .sub-menu{display:block}
  .sub-menu li a{padding:12px 16px;border-bottom:1px solid #f7f7f7}

  .hero{padding:60px 0 70px}
  .hero h1{font-size:28px}
  .hero p{font-size:15px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px;margin-top:46px}
  .hero-stats b{font-size:24px}
  .section{padding:52px 0}
  .section-head h2{font-size:24px}
  .section-head{margin-bottom:34px}

  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .news-item{flex-direction:column;gap:16px;padding:20px}
  .news-thumb{width:100%;flex:none;height:180px}
  .article-title{font-size:22px}
  .article-content{font-size:15.5px}

  .contact-grid{grid-template-columns:1fr;gap:24px}
  .contact-box{padding:24px}

  .page-hero{padding:46px 0}
  .page-hero h1{font-size:26px}

  .footer-inner{grid-template-columns:1fr;gap:32px;padding:44px 20px 30px}
  .footer-bottom-inner{flex-direction:column;text-align:center;padding-bottom:86px}

  .mobile-bar{display:flex}
  .back-top{bottom:80px;right:14px;width:42px;height:42px}
}