:root{
  --primary:#1f2733;
  --primary-soft:#2c3a4a;
  --ink:#1f2733;
  --muted:#6b7480;
  --line:#e6e9ee;
  --bg:#ffffff;
  --bg-soft:#f6f7f9;
  --bg-warm:#f3ede4;
  --accent:#b07d3f;
  --accent-soft:#f0e3d2;
  --radius:14px;
  --shadow:0 10px 30px rgba(31,39,51,.08);
  --shadow-sm:0 4px 14px rgba(31,39,51,.06);
  --maxw:1180px;
  --font:"Helvetica Neue",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}
.center{text-align:center}
.accent{color:var(--accent)}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:20px;letter-spacing:.5px}
.brand .logo{width:34px;height:34px;border-radius:9px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700}
.brand small{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:2px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-size:15px;color:var(--ink);position:relative;padding:6px 0;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);transition:width .25s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--accent)}
.lang-switch{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-size:13px}
.lang-switch button{border:0;background:transparent;padding:6px 12px;cursor:pointer;color:var(--muted);font-family:inherit}
.lang-switch button.on{background:var(--primary);color:#fff}
.nav-toggle{display:none;background:none;border:0;font-size:24px;cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;color:#fff;overflow:hidden;background:linear-gradient(135deg,#222b38,#11161f)}
.hero::after{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Crect width='40' height='40' fill='none' stroke='%23ffffff' stroke-opacity='0.04'/%3E%3C/svg%3E");opacity:.6}
.hero-inner{position:relative;z-index:2;padding:120px 0 130px;max-width:680px}
.hero .eyebrow{display:inline-block;letter-spacing:3px;font-size:13px;color:var(--accent);text-transform:uppercase;margin-bottom:18px;border:1px solid rgba(176,125,63,.5);padding:6px 14px;border-radius:999px}
.hero h1{font-size:clamp(34px,5vw,56px);line-height:1.15;font-weight:800;margin-bottom:20px}
.hero p{font-size:18px;color:#cdd3db;margin-bottom:32px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;padding:13px 26px;border-radius:10px;font-size:15px;font-weight:600;transition:transform .15s,box-shadow .2s;border:0;cursor:pointer}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(176,125,63,.35)}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.08);box-shadow:none}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0}
.section.soft{background:var(--bg-soft)}
.section.warm{background:var(--bg-warm)}
.section-head{text-align:center;max-width:680px;margin:0 auto 52px}
.section-head .kicker{color:var(--accent);letter-spacing:3px;font-size:13px;font-weight:600;text-transform:uppercase}
.section-head h2{font-size:clamp(26px,3.4vw,38px);margin:12px 0 14px;font-weight:800}
.section-head p{color:var(--muted);font-size:16px}

/* 优势 */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature .ico{width:46px;height:46px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-size:22px;margin-bottom:16px}
.feature h3{font-size:18px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:14px}

/* 产品分类 */
.cats{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.cat-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:280px;display:flex;align-items:flex-end;color:#fff;box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.cat-card .bg{position:absolute;inset:0;background-size:cover;background-position:center}
.cat-card.a .bg{background:linear-gradient(135deg,#7a5230,#5a3c22)}
.cat-card.b .bg{background:linear-gradient(135deg,#3a4654,#1f2733)}
.cat-card .meta{position:relative;z-index:2;padding:28px}
.cat-card .meta span{display:block;color:var(--accent-soft);font-size:12px;letter-spacing:2px}
.cat-card .meta h3{font-size:24px;margin:6px 0}
.cat-card .meta p{font-size:14px;color:#dbe1e8;max-width:420px}
.cat-card .go{margin-top:14px;font-size:14px;border-bottom:1px solid var(--accent);padding-bottom:3px;display:inline-block}

/* ---------- 产品网格 ---------- */
.filters{display:flex;justify-content:center;gap:10px;margin-bottom:36px;flex-wrap:wrap}
.filters button{border:1px solid var(--line);background:#fff;padding:9px 20px;border-radius:999px;cursor:pointer;font-size:14px;color:var(--muted);font-family:inherit;transition:.2s}
.filters button.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.card .thumb{aspect-ratio:4/5;background:var(--bg-soft);overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.card:hover .thumb img{transform:scale(1.05)}
.card .body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.card .tag{font-size:12px;color:var(--accent);letter-spacing:1px;text-transform:uppercase}
.card h3{font-size:18px}
.card .sub{color:var(--muted);font-size:13px;flex:1}
.card .row{display:flex;justify-content:space-between;align-items:center;margin-top:6px}
.card .price{font-weight:700;color:var(--primary)}
.card .more{font-size:13px;color:var(--accent);border-bottom:1px solid var(--accent)}

/* ---------- 关于我们 ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:54px;align-items:center}
.about-grid .media{border-radius:var(--radius);min-height:380px;background:linear-gradient(135deg,#2c3a4a,#1f2733);position:relative;overflow:hidden;box-shadow:var(--shadow)}
.about-grid .media::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(176,125,63,.35),transparent)}
.about-grid .media .qr{position:absolute;right:24px;bottom:24px;background:#fff;padding:10px;border-radius:10px;font-size:11px;color:var(--muted);text-align:center}
.about-text h2{font-size:clamp(26px,3.2vw,36px);margin-bottom:16px;font-weight:800}
.about-text p{color:var(--muted);margin-bottom:18px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.stat .n{font-size:30px;font-weight:800;color:var(--accent)}
.stat .l{font-size:13px;color:var(--muted)}
.timeline{margin-top:30px;border-left:2px solid var(--line);padding-left:24px;display:grid;gap:20px}
.timeline .item{position:relative}
.timeline .item::before{content:"";position:absolute;left:-31px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--accent);border:3px solid #fff;box-shadow:0 0 0 2px var(--accent-soft)}
.timeline .item b{display:block}
.timeline .item span{color:var(--muted);font-size:14px}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-info h2{font-size:clamp(26px,3.2vw,36px);margin-bottom:14px;font-weight:800}
.contact-info p{color:var(--muted);margin-bottom:24px}
.info-list{display:grid;gap:16px}
.info-list .it{display:flex;gap:14px;align-items:flex-start}
.info-list .it .ico{width:40px;height:40px;border-radius:10px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;flex:none}
.info-list .it b{display:block;font-size:15px}
.info-list .it span{color:var(--muted);font-size:14px}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.form label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
.form input,.form textarea,.form select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;background:#fff;color:var(--ink)}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--accent)}
.form textarea{resize:vertical;min-height:110px}
.form .ok{color:#1a8a4a;font-size:14px;margin-top:12px;display:none}
.form .err{color:#c0392b;font-size:14px;margin-top:12px;display:none}

/* ---------- 产品详情 ---------- */
.detail{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:start}
.gallery .main{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/5;background:var(--bg-soft)}
.gallery .main img{width:100%;height:100%;object-fit:cover}
.gallery .thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.gallery .thumbs img{width:74px;height:74px;border-radius:10px;object-fit:cover;border:2px solid transparent;cursor:pointer}
.gallery .thumbs img.on{border-color:var(--accent)}
.detail-info h1{font-size:30px;margin-bottom:6px;font-weight:800}
.detail-info .en{color:var(--muted);font-size:15px;margin-bottom:18px}
.detail-info .meta{display:grid;grid-template-columns:1fr 1fr;gap:14px 22px;margin:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0}
.detail-info .meta div b{display:block;font-size:12px;color:var(--muted);letter-spacing:1px;text-transform:uppercase;margin-bottom:3px}
.detail-info .meta div span{font-size:15px}
.detail-info .desc{color:var(--muted);margin-bottom:22px}
.detail-info .price{font-size:24px;font-weight:800;color:var(--accent);margin-bottom:18px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary);color:#cdd3db;padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.site-footer a{color:#aeb6c0;font-size:14px;display:block;margin-bottom:9px}
.site-footer a:hover{color:#fff}
.site-footer .brand{color:#fff;margin-bottom:14px}
.site-footer .copy{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;font-size:13px;color:#8b94a0;text-align:center}
.breadcrumb{padding:18px 0;font-size:13px;color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}

/* ---------- 后台 ---------- */
.admin-wrap{max-width:1100px;margin:0 auto;padding:30px 24px 60px}
.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.admin-top h1{font-size:24px}
.btn.sm{padding:9px 16px;font-size:14px}
.btn.danger{background:#c0392b}
.btn.line{background:#fff;color:var(--ink);border:1px solid var(--line)}
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.table th,.table td{padding:13px 14px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.table th{background:var(--bg-soft);font-weight:600;color:var(--muted)}
.table tr:last-child td{border-bottom:0}
.table .thumb{width:54px;height:54px;border-radius:8px;object-fit:cover}
.login-box{max-width:380px;margin:90px auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.login-box h1{font-size:22px;margin-bottom:6px}
.login-box p{color:var(--muted);font-size:14px;margin-bottom:22px}
.login-box label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
.login-box input{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit}
.login-box input:focus{outline:none;border-color:var(--accent)}
.login-box .err{color:#c0392b;font-size:13px;margin-top:12px;display:none}
.modal-bg{position:fixed;inset:0;background:rgba(20,25,33,.5);display:none;place-items:center;z-index:99;padding:20px}
.modal-bg.open{display:grid}
.modal{background:#fff;border-radius:var(--radius);width:100%;max-width:640px;max-height:90vh;overflow:auto;padding:26px}
.modal h2{font-size:20px;margin-bottom:16px}
.modal .grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
.modal label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
.modal input,.modal textarea,.modal select{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:14px;font-family:inherit;background:#fff}
.modal textarea{resize:vertical;min-height:90px}
.modal .upload-preview{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.modal .upload-preview img{width:64px;height:64px;border-radius:8px;object-fit:cover;border:1px solid var(--line)}
.modal .actions{display:flex;justify-content:flex-end;gap:12px;margin-top:22px}
.badge{font-size:11px;padding:3px 9px;border-radius:999px;background:var(--accent-soft);color:var(--accent)}
.badge.a{background:#e3e8ee;color:#3a4654}
.empty{text-align:center;color:var(--muted);padding:50px 0}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .features{grid-template-columns:repeat(2,1fr)}
  .grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .about-grid,.contact-grid,.detail{grid-template-columns:1fr;gap:32px}
}
@media(max-width:680px){
  .nav-links{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:10px 24px;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line);width:100%}
  .nav-toggle{display:block}
  .features,.grid,.cats,.stats{grid-template-columns:1fr}
  .section{padding:60px 0}
  .modal .grid2{grid-template-columns:1fr}
  .detail-info .meta{grid-template-columns:1fr}
}