/* 前台样式：主题色由 PHP 输出的 --theme 变量控制（后台可改） */
:root{--theme:#2563eb;--theme-dark:#1d4ed8;--theme-soft:#eff4ff;--theme-mid:#bfd2fb;--text:#1e293b;--muted:#64748b;--line:#e2e8f0;--bg:#f5f7fb;--red:#ef4444;--r:14px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:14px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg)}
a{color:inherit;text-decoration:none;transition:.2s}img{max-width:100%;display:block}h1,h2,h3,h4{margin:0}
input,select,textarea,button{font:inherit}.wrap{width:1200px;max-width:calc(100% - 32px);margin:0 auto}
.muted{color:var(--muted)}.red{color:var(--red)}.big{font-size:22px}.center{text-align:center}.right{text-align:right}.pad{padding:12px 16px}
/* 加载动画：仅首页首次/刷新时由脚本加 show-loader */
#loader{display:none;position:fixed;inset:0;z-index:9999;background:linear-gradient(135deg,var(--theme-dark),var(--theme));align-items:center;justify-content:center;transition:opacity .6s,visibility .6s}
html.show-loader #loader{display:flex}html.show-loader body{overflow:hidden}#loader.hide{opacity:0;visibility:hidden}
.ld-in{text-align:center;color:#fff}.ld-logo{width:84px;height:84px;margin:0 auto 16px;border-radius:24px;background:#fff;color:var(--theme);display:flex;align-items:center;justify-content:center;font-size:42px;font-weight:700;animation:pulse 1.2s infinite;overflow:hidden}.ld-logo img{width:100%;height:100%;object-fit:contain;padding:8px}
.ld-name{font-size:22px;letter-spacing:4px;margin-bottom:22px}.ld-bar{width:200px;height:4px;background:rgba(255,255,255,.3);border-radius:4px;overflow:hidden;margin:0 auto}.ld-bar i{display:block;height:100%;width:0;background:#fff;border-radius:4px;animation:bar 1.4s ease forwards}
@keyframes pulse{50%{transform:scale(1.1);box-shadow:0 0 0 18px rgba(255,255,255,.15)}}@keyframes bar{to{width:100%}}
/* 顶栏与导航 */
.topbar{background:#0f172a;color:#cbd5e1;font-size:12px;line-height:34px}.topbar .wrap{display:flex;justify-content:space-between}.tb-r a{margin-left:18px}.tb-r a:hover{color:#fff}
.hdr{background:rgba(255,255,255,.92);backdrop-filter:blur(10px);position:sticky;top:0;z-index:100;box-shadow:0 2px 14px rgba(15,23,42,.06)}
.hdr-in{display:flex;align-items:center;height:72px;gap:26px}.logo{display:flex;align-items:center;gap:10px;font-size:20px}.logo img{height:40px;width:auto}
.lg{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--theme),var(--theme-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px}
.nav{display:flex;gap:4px;flex:1}.nav a{padding:8px 14px;border-radius:20px;font-size:15px;position:relative}.nav a:hover,.nav a.on{background:var(--theme-soft);color:var(--theme)}
.search{display:flex;border:2px solid var(--theme);border-radius:24px;overflow:hidden;background:#fff;transition:.3s}.search:focus-within{box-shadow:0 0 0 4px var(--theme-soft)}
.search input{border:0;padding:8px 16px;width:220px;outline:0}.search button{border:0;background:var(--theme);color:#fff;padding:0 20px;cursor:pointer}.search button:hover{background:var(--theme-dark)}
.cartbtn{position:relative;font-size:24px;padding:6px 10px;border-radius:12px}.cartbtn:hover{background:var(--theme-soft);transform:translateY(-2px)}.cartbtn em{position:absolute;top:-2px;right:-2px;background:var(--red);color:#fff;font:700 11px/18px sans-serif;min-width:18px;text-align:center;border-radius:9px;padding:0 4px}
/* 按钮 */
.btn{display:inline-block;border:0;background:var(--theme);color:#fff;padding:9px 22px;border-radius:24px;cursor:pointer;transition:.25s;font-size:14px}
.btn:hover{background:var(--theme-dark);transform:translateY(-2px);box-shadow:0 8px 20px -6px var(--theme)}.btn.ghost{background:#fff;color:var(--theme);border:1px solid var(--theme)}.btn.ghost:hover{background:var(--theme-soft)}
.btn.sm{padding:5px 14px;font-size:13px}.btn.lg{padding:13px 38px;font-size:16px}.btn.block{width:100%;margin-top:18px;border-radius:12px}.btn[disabled]{cursor:not-allowed;transform:none;box-shadow:none}
/* 首页 Hero */
.hero{display:grid;grid-template-columns:230px 1fr;gap:16px;margin-top:20px}
.catside{background:#fff;border-radius:var(--r);padding:10px 0;box-shadow:0 4px 18px rgba(15,23,42,.05)}.catside h3{padding:8px 18px;font-size:15px;color:var(--muted)}
.catside a{display:flex;align-items:center;padding:10px 18px;gap:10px;font-size:15px}.catside a span{font-size:20px}.catside a i{margin-left:auto;color:#cbd5e1;font-style:normal;transition:.2s}.catside a:hover{background:var(--theme-soft);color:var(--theme);padding-left:24px}.catside a:hover i{color:var(--theme);transform:translateX(4px)}
.slider{position:relative;height:400px;border-radius:var(--r);overflow:hidden;box-shadow:0 10px 30px rgba(15,23,42,.1)}
.slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .8s;display:flex;align-items:center;padding:0 70px;color:#fff}.slide.on{opacity:1;z-index:1}
.slide[data-grad="0"]{background-image:linear-gradient(120deg,var(--theme-dark),var(--theme) 60%,#8b5cf6)}.slide[data-grad="1"]{background-image:linear-gradient(120deg,#0f172a,#334155 60%,var(--theme))}.slide[data-grad="2"]{background-image:linear-gradient(120deg,#7c3aed,#db2777 70%,#f59e0b)}
.slide-txt{max-width:520px;text-shadow:0 2px 12px rgba(0,0,0,.25)}.slide.on .slide-txt{animation:slideIn .9s}.slide-txt h2{font-size:42px;line-height:1.25;margin-bottom:14px}.slide-txt p{font-size:18px;opacity:.92;margin:0 0 26px}.slide-txt .btn{background:#fff;color:var(--theme);padding:12px 34px;font-size:16px}
@keyframes slideIn{from{opacity:0;transform:translateX(-40px)}}
.sl-btn{position:absolute;top:50%;z-index:3;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:0;background:rgba(255,255,255,.25);color:#fff;font-size:26px;cursor:pointer;opacity:0;transition:.3s}.slider:hover .sl-btn{opacity:1}.sl-btn:hover{background:rgba(255,255,255,.5)}.prev{left:16px}.next{right:16px}
.dots{position:absolute;bottom:18px;left:0;right:0;text-align:center;z-index:3}.dots i{display:inline-block;width:10px;height:10px;margin:0 5px;border-radius:5px;background:rgba(255,255,255,.5);cursor:pointer;transition:.3s}.dots i.on{width:28px;background:#fff}
.feats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:20px}.feat{display:flex;gap:14px;align-items:center;background:#fff;padding:18px 20px;border-radius:var(--r);transition:.3s}.feat:hover{transform:translateY(-4px);box-shadow:0 12px 26px rgba(15,23,42,.08)}.feat span{font-size:30px}.feat b{font-size:15px}.feat p{margin:0;color:var(--muted);font-size:12px}
/* 板块与商品卡片 */
.sec{margin-top:44px}.sec-h{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:20px}.sec-h h2{font-size:26px;padding-left:14px;border-left:5px solid var(--theme)}.sec-h p{margin:4px 0 0 19px;color:var(--muted)}.sec-h a{color:var(--theme)}.sec-h a:hover{letter-spacing:1px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pcard,.ncard{display:block;background:#fff;border-radius:var(--r);overflow:hidden;transition:.35s;box-shadow:0 2px 10px rgba(15,23,42,.04)}.pcard:hover,.ncard:hover{transform:translateY(-8px);box-shadow:0 20px 40px -12px rgba(37,99,235,.28)}
.pimg{position:relative;aspect-ratio:1/1;overflow:hidden;background:var(--theme-soft)}.ncard .pimg{aspect-ratio:16/10}.pimg img{width:100%;height:100%;object-fit:cover;transition:.5s}.pcard:hover .pimg img,.ncard:hover .pimg img{transform:scale(1.08)}
.tags{position:absolute;top:10px;left:10px;display:flex;gap:6px}.tag{font-style:normal;font-size:11px;padding:1px 8px;border-radius:10px;color:#fff;background:var(--theme)}.tag.new{background:#10b981}.tag.promo{background:#f59e0b}.tag.hot{background:var(--red)}
.pinfo{padding:14px 16px 16px}.pinfo h3{font-size:15px;font-weight:600;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.pinfo p{margin:4px 0 10px;color:var(--muted);font-size:12px;height:36px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.pinfo small{color:#94a3b8}
.pprice{display:flex;align-items:baseline;gap:8px}.pprice b{color:var(--red);font-size:20px}.pprice del{color:#94a3b8;font-size:12px}.pprice span{margin-left:auto;color:#94a3b8;font-size:12px}
.reveal{opacity:0;transform:translateY(30px);transition:opacity .6s,transform .6s,box-shadow .35s}.reveal.in{opacity:1;transform:none}.pcard.reveal.in:hover,.ncard.reveal.in:hover{transform:translateY(-8px)}
/* 列表页 */
.crumb{padding:16px 0;color:var(--muted)}.crumb a:hover{color:var(--theme)}.listwrap{display:grid;grid-template-columns:220px 1fr;gap:18px;align-items:start}
.filter{background:#fff;border-radius:var(--r);padding:14px 0;position:sticky;top:90px}.filter h3{padding:6px 18px;font-size:14px;color:var(--muted)}.filter>a{display:block;padding:8px 18px}.filter>a:hover,.filter>a.on{background:var(--theme-soft);color:var(--theme);font-weight:600}
.pricef{display:flex;gap:6px;padding:8px 14px;flex-wrap:wrap;align-items:center}.pricef input{width:80px;padding:6px 8px;border:1px solid var(--line);border-radius:8px}
.sortbar{display:flex;gap:6px;align-items:center;background:#fff;padding:10px 14px;border-radius:var(--r);margin-bottom:16px;flex-wrap:wrap}.sortbar a{padding:4px 14px;border-radius:16px}.sortbar a.on,.sortbar a:hover{background:var(--theme);color:#fff}.sortbar .muted{margin-left:auto}
.empty{background:#fff;border-radius:var(--r);text-align:center;padding:70px 20px;color:var(--muted);line-height:3}.pager{display:flex;gap:6px;justify-content:center;margin:28px 0;flex-wrap:wrap}.pager a,.pager span{padding:6px 14px;background:#fff;border-radius:8px;border:1px solid var(--line)}.pager a:hover,.pager a.on{background:var(--theme);color:#fff;border-color:var(--theme)}
/* 商品详情 */
.pd{display:grid;grid-template-columns:480px 1fr;gap:36px;background:#fff;border-radius:var(--r);padding:28px}
.gal-main{aspect-ratio:1/1;border-radius:var(--r);overflow:hidden;background:var(--theme-soft)}.gal-main img{width:100%;height:100%;object-fit:cover;transition:.4s}.gal-main:hover img{transform:scale(1.12)}
.gal-th{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}.gal-th img{width:72px;height:72px;object-fit:cover;border-radius:10px;border:2px solid transparent;cursor:pointer;opacity:.7;transition:.2s}.gal-th img.on,.gal-th img:hover{border-color:var(--theme);opacity:1}
.pd-info h1{font-size:24px}.pd-info .sub{color:var(--muted);margin:6px 0 16px}.pd-price{background:linear-gradient(90deg,#fff1f2,#fff);padding:16px 18px;border-radius:12px;display:flex;align-items:baseline;gap:12px;margin-bottom:18px}.pd-price span{color:var(--muted)}.pd-price b{color:var(--red);font-size:32px}.pd-price del{color:#94a3b8}.pd-price small{margin-left:auto;color:var(--muted)}
.spec{display:flex;align-items:center;gap:14px;margin:16px 0}.spec>label{width:50px;color:var(--muted);flex:none}.opts{display:flex;gap:10px;flex-wrap:wrap}.opt{padding:7px 18px;border:1px solid var(--line);border-radius:10px;cursor:pointer;transition:.2s;user-select:none}.opt:hover{border-color:var(--theme)}.opt.on{border-color:var(--theme);background:var(--theme-soft);color:var(--theme);font-weight:600}.opt small{color:var(--red)}
.qty{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}.qty button{width:34px;border:0;background:#f8fafc;cursor:pointer;font-size:18px}.qty button:hover{background:var(--theme-soft)}.qty input{width:50px;text-align:center;border:0;border-left:1px solid var(--line);border-right:1px solid var(--line);outline:0}.stock{color:var(--muted)}.stock.low{color:var(--red)}
.pd-act{display:flex;gap:14px;margin:30px 0 20px}.pd-tips{display:flex;gap:22px;list-style:none;padding:0;margin:0;color:var(--muted)}
.pd-detail{background:#fff;border-radius:var(--r);margin-top:20px;padding:0 28px 28px}.tabs{border-bottom:1px solid var(--line);margin-bottom:20px}.tabs span{display:inline-block;padding:16px 4px;margin-right:20px;font-size:17px;font-weight:600;border-bottom:3px solid var(--theme)}
.rich{line-height:1.9;font-size:15px;overflow-wrap:anywhere}.rich img{max-width:100%;height:auto;border-radius:8px;margin:8px 0}.rich h2,.rich h3{margin:18px 0 8px}
/* 表格/卡片/表单 */
.card{background:#fff;border-radius:var(--r);padding:22px 26px;margin-bottom:18px;box-shadow:0 2px 10px rgba(15,23,42,.04)}.card h3{font-size:17px;margin-bottom:14px}
.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--r);overflow:hidden}.tbl th{background:#f8fafc;text-align:left;padding:12px;font-weight:600;color:var(--muted)}.tbl td{padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:middle}.tbl tr.dis{opacity:.5}
.ci{display:flex;gap:12px;align-items:center}.ci img{width:72px;height:72px;border-radius:10px;object-fit:cover;flex:none}.ci small{display:block;color:var(--muted)}.ci a:hover{color:var(--theme)}.del{color:var(--muted)}.del:hover{color:var(--red)}
.cartbar{position:sticky;bottom:0;background:#fff;display:flex;gap:30px;align-items:center;justify-content:flex-end;padding:16px 24px;border-radius:var(--r);box-shadow:0 -6px 24px rgba(15,23,42,.08);margin:18px 0}
label{display:block;margin:12px 0 5px;color:var(--muted);font-size:13px}input:not([type=checkbox]):not([type=radio]),select,textarea{width:100%;padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;transition:.2s}input:focus,select:focus,textarea:focus{outline:0;border-color:var(--theme);box-shadow:0 0 0 3px var(--theme-soft)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.form-grid .full{grid-column:1/-1}.chk{display:flex;align-items:center;gap:8px;color:var(--text)}.chk input{width:auto}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:14px}.alert.ok{background:#ecfdf5;color:#047857}.alert.err{background:#fef2f2;color:#b91c1c}
.addr{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border:1px solid var(--line);border-radius:10px;margin:8px 0;cursor:pointer;color:var(--text);transition:.2s}.addr:hover{border-color:var(--theme)}.addr input{margin-top:5px}.newaddr{margin-top:8px}
.authbox{display:flex;justify-content:center;padding:50px 0}.auth{width:420px;padding:36px}.auth h2{font-size:26px}
.artwrap{display:grid;grid-template-columns:1fr 280px;gap:18px;align-items:start}.art h1{font-size:28px}.meta{color:var(--muted);margin:10px 0 20px;padding-bottom:14px;border-bottom:1px solid var(--line)}.mlink{display:block;padding:8px 0;border-bottom:1px dashed var(--line)}.mlink:hover{color:var(--theme)}
.msgwrap{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}.msg{margin-bottom:16px}.msg .q,.msg .a{padding:12px 14px;border-radius:10px;margin-bottom:6px}.msg .q{background:#f1f5f9}.msg .a{background:var(--theme-soft)}.msg .a.wait{color:var(--muted)}.msg small{display:block;color:#94a3b8;margin-top:4px}
.ucwrap{display:grid;grid-template-columns:230px 1fr;gap:18px;align-items:start}.ucmenu{padding:18px 0}.ucmenu>a{display:block;padding:12px 24px}.ucmenu>a:hover,.ucmenu>a.on{background:var(--theme-soft);color:var(--theme);font-weight:600}
.uhead{text-align:center;padding:0 16px 16px;margin-bottom:8px;border-bottom:1px solid var(--line)}.uhead small{display:block;color:var(--muted)}.ava{width:64px;height:64px;border-radius:50%;margin:0 auto 8px;background:linear-gradient(135deg,var(--theme),var(--theme-dark));color:#fff;font-size:28px;display:flex;align-items:center;justify-content:center}
.ord{border:1px solid var(--line);border-radius:12px;margin:14px 0;overflow:hidden;transition:.2s}.ord:hover{box-shadow:0 8px 22px rgba(15,23,42,.08)}.ord-h{display:flex;gap:24px;background:#f8fafc;padding:10px 16px;color:var(--muted);font-size:13px}.ord-h b{margin-left:auto}.ord-b{display:flex;justify-content:space-between;align-items:center;padding:14px 16px}.ord-imgs{display:flex;gap:8px}.ord-imgs img{width:60px;height:60px;border-radius:8px;object-fit:cover}.ord-r{text-align:right;display:flex;flex-direction:column;gap:8px;align-items:flex-end}
.st{color:var(--theme)}.st-pending{color:#f59e0b}.st-completed{color:#10b981}.st-refund,.st-cancelled{color:#94a3b8}.addrrow{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}.addrrow form{display:flex;gap:6px}
/* 页脚 */
.ftr{background:#0f172a;color:#94a3b8;margin-top:60px;padding:46px 0 0}.ft-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:30px}.ftr h4{color:#fff;margin-bottom:14px}.ftr a{display:block;padding:3px 0}.ftr a:hover{color:#fff}.ftr p{margin:4px 0}.ft-bot{display:flex;justify-content:space-between;border-top:1px solid #1e293b;margin-top:34px;padding:18px 0}.ft-bot a{display:inline}
#toast{position:fixed;top:90px;left:50%;transform:translateX(-50%);z-index:9998}#toast div{background:#0f172a;color:#fff;padding:12px 26px;border-radius:30px;margin-bottom:8px;box-shadow:0 10px 30px rgba(0,0,0,.25);animation:tIn .35s}#toast div.err{background:#dc2626}@keyframes tIn{from{opacity:0;transform:translateY(-20px)}}
#toTop{position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;border:0;background:var(--theme);color:#fff;font-size:20px;cursor:pointer;opacity:0;visibility:hidden;transition:.3s;box-shadow:0 8px 20px -4px var(--theme);z-index:90}#toTop.show{opacity:1;visibility:visible}#toTop:hover{transform:translateY(-4px)}
@media(max-width:1100px){.hero{grid-template-columns:1fr}.catside{display:none}.grid4{grid-template-columns:repeat(2,1fr)}.nav a:nth-child(n+5){display:none}.pd,.listwrap,.ucwrap,.artwrap,.msgwrap{grid-template-columns:1fr}.search input{width:120px}}