:root{--primary: #1a6dff;--primary-dark: #0f54cc;--bg: #f6f7f9;--card: #ffffff;--text: #1f2430;--muted: #6b7280;--border: #e5e7eb;--danger: #e5484d;--ok: #16a34a}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}.container{max-width:1120px;margin:0 auto;padding:0 20px}.site-header{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.site-header .inner{display:flex;align-items:center;justify-content:space-between;height:60px}.logo{font-size:20px;font-weight:700;color:var(--text)}.logo span{color:var(--primary)}.nav a{margin-left:20px;color:var(--muted);font-size:14px}.nav a:hover,.nav a.router-link-active{color:var(--primary)}.hero{background:linear-gradient(135deg,#1a6dff,#0f3fa3);color:#fff;padding:64px 20px;text-align:center}.hero h1{margin:0 0 12px;font-size:34px}.hero p{margin:0;opacity:.85;font-size:16px}.section{padding:36px 0}.section h2{margin:0 0 20px;font-size:22px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden;cursor:pointer;transition:box-shadow .2s,transform .2s}.card:hover{box-shadow:0 8px 24px #00000014;transform:translateY(-2px)}.card .img{height:180px;background:linear-gradient(135deg,#dbe7ff,#f0f4ff);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:44px;font-weight:700}.card .img img{width:100%;height:100%;object-fit:cover}.card .body{padding:14px 16px}.card .body h3{margin:0 0 6px;font-size:16px}.card .body .cat{font-size:12px;color:var(--muted)}.card .body .price{margin-top:8px;color:var(--danger);font-weight:700;font-size:18px}.detail{display:grid;grid-template-columns:1fr 1fr;gap:32px;padding:32px 0}.detail .img{background:linear-gradient(135deg,#dbe7ff,#f0f4ff);border-radius:12px;min-height:360px;display:flex;align-items:center;justify-content:center;font-size:72px;font-weight:700;color:var(--primary);overflow:hidden}.detail .img img{width:100%;height:100%;object-fit:cover}.detail h1{margin:0 0 8px}.detail .price{color:var(--danger);font-size:28px;font-weight:700;margin:12px 0}.detail .desc{color:var(--muted);line-height:1.8;white-space:pre-wrap}.form{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px}.form h3{margin:0 0 16px}.field{margin-bottom:14px}.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.field input,.field textarea,.field select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit}.field textarea{min-height:90px;resize:vertical}.btn{display:inline-block;background:var(--primary);color:#fff;border:none;padding:10px 22px;border-radius:8px;font-size:14px;cursor:pointer}.btn:hover{background:var(--primary-dark)}.btn.ghost{background:#fff;color:var(--text);border:1px solid var(--border)}.btn.danger{background:var(--danger)}.btn.small{padding:6px 12px;font-size:12px}.btn:disabled{opacity:.5;cursor:not-allowed}.admin-layout{display:flex;min-height:100vh}.sidebar{width:210px;background:#111827;color:#d1d5db;padding:20px 0;flex-shrink:0}.sidebar h2{color:#fff;font-size:16px;padding:0 20px;margin:0 0 16px}.sidebar a{display:block;padding:10px 20px;color:#d1d5db;font-size:14px;cursor:pointer}.sidebar a:hover,.sidebar a.active{background:#1f2937;color:#fff}.main{flex:1;padding:24px;overflow-x:auto}.stat-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px}.stat-card .num{font-size:30px;font-weight:700}.stat-card .lbl{color:var(--muted);font-size:13px;margin-top:4px}.panel{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:24px}.panel h3{margin:0 0 14px;font-size:16px}table.tbl{width:100%;border-collapse:collapse;font-size:13px}table.tbl th,table.tbl td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--border)}table.tbl th{color:var(--muted);font-weight:600;background:#fafbfc}.range-btns{display:flex;gap:8px;margin-bottom:16px}.range-btns .btn.active{background:var(--primary-dark)}.bars{display:flex;align-items:flex-end;gap:6px;height:180px;padding-top:8px}.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%}.bar{width:70%;max-width:34px;background:linear-gradient(180deg,#5b93ff,#1a6dff);border-radius:4px 4px 0 0;min-height:3px}.bar-col .x{font-size:10px;color:var(--muted);margin-top:6px;white-space:nowrap}.bar-col .v{font-size:10px;color:var(--text);margin-bottom:4px}.legend{font-size:12px;color:var(--muted);margin-top:8px}.toolbar{display:flex;gap:10px;margin-bottom:14px;align-items:center;flex-wrap:wrap}.toolbar input{padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:13px}.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;background:#eef2ff;color:var(--primary)}.badge.unread{background:#fef2f2;color:var(--danger)}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1a6dff,#0f3fa3)}.login-box{background:#fff;border-radius:14px;padding:36px;width:360px;box-shadow:0 20px 60px #0003}.login-box h2{margin:0 0 6px;text-align:center}.login-box .sub{text-align:center;color:var(--muted);font-size:13px;margin-bottom:20px}.err{color:var(--danger);font-size:13px;margin-bottom:12px;text-align:center}.footer{text-align:center;color:var(--muted);font-size:13px;padding:28px 0}@media(max-width:720px){.detail{grid-template-columns:1fr}.admin-layout{flex-direction:column}.sidebar{width:100%}}