*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#f0f2f5;--card:#fff;--primary:#635bff;--primary-light:#817aff;
  --primary-bg:rgba(99,91,255,.08);--text:#1a1a2e;--text2:#6b7280;
  --text3:#9ca3af;--border:#e5e7eb;--green:#10b981;--red:#ef4444;
  --orange:#f59e0b;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.06);
}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;font-size:14px;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--primary);text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}
.page-content{flex:1 0 auto}

/* 顶栏 */
.topbar{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
#pageHome{padding-top:32px}
#pageQuery,#pageUser{padding-top:24px}
.topbar .brand{font-size:17px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px}
.topbar .brand .brand-logo{width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}
.topbar .brand .brand-logo i{width:28px;height:28px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-style:normal;font-size:14px;font-weight:700}
.topbar .brand .brand-logo img{width:28px;height:28px;object-fit:contain}
.topbar nav{display:flex;align-items:center;gap:6px;flex-wrap:nowrap}
.topbar nav a,.topbar nav button{padding:6px 14px;border-radius:8px;font-size:13px;color:var(--text2);border:none;background:none;cursor:pointer;transition:.2s;white-space:nowrap}
.topbar nav a:hover,.topbar nav button:hover{background:var(--primary-bg);color:var(--primary)}
.topbar nav .avatar-btn{display:flex;align-items:center;gap:6px;font-weight:500;color:var(--text);white-space:nowrap}
.topbar nav .avatar-circle{width:30px;height:30px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;flex-shrink:0}
.topbar nav .balance-tag{background:#f0fdf4;color:var(--green);padding:3px 10px;border-radius:20px;font-size:12px;font-weight:500;white-space:nowrap}
.topbar nav #navUser{display:flex;align-items:center;gap:6px}

/* 横幅 */
.hero{padding:48px 0 32px;text-align:center}
.hero h1{font-size:28px;font-weight:700;margin-bottom:8px;color:var(--text)}
.hero p{color:var(--text2);font-size:15px}
/* 公告（弹窗形式，样式复用 overlay/modal） */

/* 分类 */
.cat-bar{display:flex;gap:8px;margin-bottom:24px;flex-wrap:wrap}
.cat-bar .cat{padding:7px 18px;border-radius:20px;font-size:13px;cursor:pointer;border:1px solid var(--border);background:var(--card);color:var(--text2);transition:.2s;user-select:none}
.cat-bar .cat:hover{border-color:var(--primary);color:var(--primary)}
.cat-bar .cat.on{background:var(--primary);color:#fff;border-color:var(--primary)}

/* 商品网格 */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,220px));gap:14px;margin-bottom:40px}
.prod{background:var(--card);border-radius:10px;padding:14px;border:1px solid var(--border);transition:.15s;cursor:pointer;text-align:center}
.prod:hover{box-shadow:0 4px 16px rgba(99,91,255,.1);border-color:var(--primary-light);transform:translateY(-2px)}
.prod .prod-img{width:64px;height:64px;border-radius:10px;object-fit:cover;margin:0 auto 10px}
.prod .prod-img-placeholder{width:64px;height:64px;border-radius:10px;background:#f3f4f6;margin:0 auto 10px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--text3)}
.prod h3{font-size:13px;font-weight:500;margin-bottom:6px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.prod .price{font-size:18px;font-weight:700;color:var(--red)}
.prod .price small{font-size:11px;font-weight:400}
.prod .prod-stock{font-size:11px;color:var(--text3);margin-top:4px}
.prod.prod-soldout{opacity:.55;cursor:not-allowed}
.prod.prod-soldout:hover{box-shadow:none;border-color:var(--border);transform:none}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:9px 22px;border:none;border-radius:8px;font-size:13px;cursor:pointer;transition:.15s;font-weight:500;gap:6px}
.btn-p{background:var(--primary);color:#fff}.btn-p:hover{background:var(--primary-light)}
.btn-o{background:var(--primary-bg);color:var(--primary)}.btn-o:hover{background:rgba(99,91,255,.15)}
.btn-g{background:#f0fdf4;color:var(--green)}.btn-g:hover{background:#dcfce7}
.btn-d{background:#fef2f2;color:var(--red)}.btn-d:hover{background:#fee2e2}
.btn-gray{background:#f3f4f6;color:var(--text2)}.btn-gray:hover{background:#e5e7eb}
.btn-sm{padding:5px 14px;font-size:12px}
.btn-block{width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed}

/* 表单 */
.fg{margin-bottom:14px}
.fg label{display:block;margin-bottom:5px;font-size:12px;color:var(--text2);font-weight:500}
.fi{width:100%;padding:9px 14px;border:1px solid var(--border);border-radius:8px;font-size:14px;outline:none;transition:.2s;background:var(--card)}
.fi:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(99,91,255,.1)}
textarea.fi{resize:vertical;min-height:80px}
select.fi{appearance:auto}

/* 弹窗 */
.overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;pointer-events:none;transition:.2s}
.overlay.show{opacity:1;pointer-events:auto}
.modal{background:var(--card);border-radius:16px;padding:28px;width:90%;max-width:420px;max-height:85vh;overflow-y:auto;transform:translateY(20px);transition:.25s;position:relative}
.overlay.show .modal{transform:translateY(0)}
.modal h3{font-size:17px;font-weight:600;margin-bottom:18px}
.modal-foot{display:flex;gap:8px;justify-content:flex-end;margin-top:20px}
.modal-close{position:absolute;top:16px;right:16px;width:28px;height:28px;border-radius:50%;border:none;background:#f3f4f6;color:var(--text2);font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.15s;line-height:1}
.modal-close:hover{background:#e5e7eb;color:var(--text)}

/* 支付选择 */
.pay-opts{display:flex;gap:10px;margin-bottom:16px}
.pay-opt{flex:1;padding:14px;border:2px solid var(--border);border-radius:10px;text-align:center;cursor:pointer;transition:.2s;font-size:13px;color:var(--text2)}
.pay-opt:hover{border-color:var(--primary-light)}
.pay-opt.on{border-color:var(--primary);background:var(--primary-bg);color:var(--primary);font-weight:500}
.pay-opt .ico{font-size:22px;margin-bottom:4px}

/* 二维码 */
.qr-box{text-align:center;padding:16px}
.qr-box img{width:180px;height:180px;border-radius:8px}
.qr-box p{margin-top:10px;color:var(--text2);font-size:13px}

/* 购买弹窗 */
.buy-modal{max-width:520px}
.buy-header{display:flex;gap:18px;margin-bottom:0}
.buy-img{width:90px;height:90px;border-radius:12px;background:#f3f4f6;display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}
.buy-img img{width:100%;height:100%;object-fit:cover}
.buy-img .no-img{font-size:36px;color:var(--text3)}
.buy-info{flex:1}
.buy-info h3{font-size:18px;font-weight:600;margin-bottom:6px}
.buy-tags{display:flex;gap:6px;margin-bottom:8px;flex-wrap:wrap}
.buy-tags .bt{padding:2px 10px;border-radius:4px;font-size:11px;font-weight:500}
.buy-tags .bt-stock{background:#f0fdf4;color:var(--green)}
.buy-tags .bt-cat{background:#f0f5ff;color:var(--primary)}
.buy-price{font-size:26px;font-weight:700;color:var(--red)}
.buy-price small{font-size:13px;font-weight:400;color:var(--text3);margin-left:6px}
.buy-divider{height:1px;background:var(--border);margin:18px 0}
.buy-desc{font-size:13px;color:var(--text2);line-height:1.8;margin-bottom:16px;background:#f8fafc;border:1px solid var(--border);border-radius:8px;padding:14px 16px}
.buy-desc:empty{display:none}
.buy-desc img{max-width:100%;border-radius:6px}
.buy-desc-label{font-size:12px;color:var(--text3);font-weight:500;margin-bottom:6px}
.qty-wrap{display:flex;border:1px solid var(--border);border-radius:8px;overflow:hidden;width:fit-content}
.qty-btn{width:36px;height:36px;border:none;background:#fafafa;font-size:16px;cursor:pointer;color:var(--text2);transition:.15s;line-height:1}
.qty-btn:hover{background:#f0f0f0}
.qty-input{width:50px;height:36px;border:none;border-left:1px solid var(--border);border-right:1px solid var(--border);text-align:center;font-size:14px;font-weight:600;outline:none;background:var(--card);-moz-appearance:textfield;appearance:textfield}
.qty-input::-webkit-outer-spin-button,.qty-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.pay-opts{display:flex;gap:10px;margin-top:6px}
.pay-opt{flex:none;padding:10px 18px;border:2px solid var(--border);border-radius:10px;cursor:pointer;transition:.2s;font-size:13px;color:var(--text2);display:flex;align-items:center;gap:8px}
.pay-opt:hover{border-color:var(--primary-light)}
.pay-opt.on{border-color:var(--primary);background:var(--primary-bg);color:var(--primary);font-weight:500}
.pay-ico{width:24px;height:24px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;flex-shrink:0}
.pay-ali{background:#1677ff}
.pay-bal{background:var(--green)}
.btn-submit{background:var(--red);color:#fff;padding:13px;font-size:15px;font-weight:600;border-radius:10px;margin-top:8px}
.btn-submit:hover{background:#dc2626}

/* 用户中心 */
.uc-layout{display:flex;gap:20px;margin:32px 0}
.uc-side{width:200px;flex-shrink:0}
.uc-side .card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden}
.uc-side .user-info{padding:24px;text-align:center;border-bottom:1px solid var(--border)}
.uc-side .user-info .av{width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:600;margin:0 auto 10px}
.uc-side .user-info .name{font-size:15px;font-weight:600}
.uc-side .user-info .bal{margin-top:10px;font-size:12px;color:var(--text3);text-align:center}
.uc-side .user-info .bal-num{display:block;font-size:20px;font-weight:700;color:var(--text);margin-top:2px;letter-spacing:-.5px}
.uc-side .menu a{display:block;padding:11px 20px;font-size:13px;color:var(--text2);border-bottom:1px solid var(--border);transition:.15s}
.uc-side .menu a:last-child{border:none}
.uc-side .menu a:hover,.uc-side .menu a.on{background:var(--primary-bg);color:var(--primary)}
.uc-main{flex:1;min-width:0}
.uc-main .card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);padding:24px;margin-bottom:16px}
.uc-main h2{font-size:17px;font-weight:600;margin-bottom:18px}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th,.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border)}
.tbl th{color:var(--text3);font-weight:500;font-size:12px;background:#fafafa}
.tbl tr:hover{background:#fafafa}

/* 标签 */
.tag{display:inline-block;padding:2px 10px;border-radius:6px;font-size:11px;font-weight:500}
.tag-ok{background:#f0fdf4;color:var(--green)}
.tag-wait{background:#fffbeb;color:var(--orange)}
.tag-err{background:#fef2f2;color:var(--red)}

/* 卡密展示 */
.cards-box{background:#f8fafc;border:1px solid var(--border);border-radius:8px;padding:14px;margin-top:10px;white-space:pre-wrap;word-break:break-all;font-family:"SF Mono",Monaco,monospace;font-size:13px;line-height:1.8}

/* 统计卡片 */
.stat-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;margin-bottom:24px}
.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.stat .lb{font-size:12px;color:var(--text3);margin-bottom:4px}
.stat .vl{font-size:24px;font-weight:700}

/* 页脚 */
.footer{text-align:center;padding:32px 0;color:var(--text3);font-size:12px}

/* 空 */
.empty{text-align:center;padding:48px;color:var(--text3)}

/* Toast 提示 */
.toast-wrap{position:fixed;top:24px;left:50%;transform:translateX(-50%);z-index:9999;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none}
.toast{padding:10px 22px;border-radius:10px;font-size:13px;font-weight:500;color:#fff;background:rgba(26,26,46,.88);backdrop-filter:blur(8px);box-shadow:0 4px 20px rgba(0,0,0,.12);opacity:0;transform:translateY(-12px);transition:all .3s;pointer-events:auto;max-width:360px;text-align:center;line-height:1.5}
.toast.show{opacity:1;transform:translateY(0)}
.toast.toast-ok{background:rgba(16,185,129,.92)}
.toast.toast-err{background:rgba(239,68,68,.92)}

/* 分页 */
.pager{display:flex;gap:6px;margin-top:16px;justify-content:center}
.pager .pg{padding:5px 12px;border-radius:6px;font-size:12px;cursor:pointer;border:1px solid var(--border);background:var(--card);color:var(--text2)}
.pager .pg.on{background:var(--primary);color:#fff;border-color:var(--primary)}

/* 登录/注册表单 */
.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}
.auth-box{background:var(--card);border-radius:16px;padding:36px;width:380px;box-shadow:0 4px 24px rgba(0,0,0,.06)}
.auth-box h2{text-align:center;font-size:20px;margin-bottom:24px}
.auth-box .switch{text-align:center;margin-top:16px;font-size:13px;color:var(--text3)}

/* 响应式 */
@media(max-width:768px){
  .grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
  .uc-layout{flex-direction:column}
  .uc-side{width:100%}
  .stat-row{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .grid{grid-template-columns:1fr 1fr}
  .wrap{padding:0 16px}
}

/* ========== 后台 ========== */
.admin-layout{display:flex;min-height:100vh}
.admin-side{width:210px;background:#16163a;color:#fff;flex-shrink:0;padding:20px 0}
.admin-side .logo{padding:0 20px 20px;font-size:15px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:8px}
.admin-side .menu a{display:block;padding:10px 20px;color:rgba(255,255,255,.6);font-size:13px;transition:.15s}
.admin-side .menu a:hover,.admin-side .menu a.on{background:rgba(255,255,255,.08);color:#fff}
.admin-main{flex:1;padding:24px;overflow-x:auto;background:var(--bg)}
.admin-main h2{font-size:17px;font-weight:600;margin-bottom:18px}
.toolbar{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap;align-items:center}
.card-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px}
@media(max-width:768px){
  .admin-side{width:56px}.admin-side .logo{font-size:11px;padding:0 8px 16px}
  .admin-side .menu a{padding:10px 8px;font-size:11px;text-align:center}
}