:root{--bg: #0f172a;--bg-soft: #1e293b;--surface: #ffffff;--surface-2: #f8fafc;--border: #e2e8f0;--text: #0f172a;--text-soft: #475569;--muted: #94a3b8;--brand: #4f46e5;--brand-dark: #4338ca;--ok: #16a34a;--ok-bg: #dcfce7;--warn: #d97706;--warn-bg: #fef3c7;--bad: #dc2626;--bad-bg: #fee2e2;--info: #0284c7;--info-bg: #e0f2fe;--radius: 14px;--shadow: 0 10px 30px rgba(15, 23, 42, .08);color-scheme:light}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif;background:var(--surface-2);color:var(--text);-webkit-font-smoothing:antialiased;line-height:1.5}a{color:var(--brand);text-decoration:none}button{font-family:inherit}.app-shell{min-height:100%;display:flex;flex-direction:column}.center-screen{min-height:100%;display:grid;place-items:center;padding:24px 16px;background:radial-gradient(1200px 600px at 50% -10%,#312e81 0%,var(--bg) 55%)}.container{width:100%;max-width:720px;margin:0 auto;padding:16px}.container-wide{max-width:1180px}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;background:#ffffffe6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.topbar .brand{font-weight:700;letter-spacing:.2px;display:flex;align-items:center;gap:8px}.topbar .brand .dot{width:10px;height:10px;border-radius:50%;background:var(--brand)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card+.card{margin-top:16px}.card h2{margin:0 0 4px;font-size:18px}.card .sub{color:var(--text-soft);font-size:14px;margin:0 0 16px}.auth-card{max-width:420px;width:100%}.auth-card h1{font-size:22px;margin:0 0 4px}.auth-card .sub{color:var(--text-soft);margin:0 0 20px}label.field{display:block;margin-bottom:14px}label.field .lbl{display:block;font-size:13px;color:var(--text-soft);margin-bottom:6px;font-weight:600}input,select,textarea{width:100%;padding:11px 13px;font-size:15px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);transition:border-color .15s,box-shadow .15s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px #4f46e526}textarea{min-height:96px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.hint{font-size:12px;color:var(--muted);margin-top:6px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;font-size:15px;font-weight:600;cursor:pointer;border-radius:10px;border:1px solid transparent;background:var(--brand);color:#fff;transition:background .15s,opacity .15s,transform .05s}.btn:hover{background:var(--brand-dark)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.block{width:100%}.btn.ghost{background:#fff;color:var(--text);border-color:var(--border)}.btn.ghost:hover{background:var(--surface-2)}.btn.danger{background:var(--bad)}.btn.danger:hover{background:#b91c1c}.btn.sm{padding:7px 12px;font-size:13px}.btn-row{display:flex;gap:10px;flex-wrap:wrap}.segmented{display:flex;gap:8px;background:var(--surface-2);padding:5px;border-radius:12px;border:1px solid var(--border)}.segmented button{flex:1;padding:10px;border:none;background:transparent;border-radius:8px;font-weight:600;cursor:pointer;color:var(--text-soft)}.segmented button.active{background:#fff;color:var(--brand);box-shadow:0 1px 3px #0f172a1f}.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}.badge.ok{background:var(--ok-bg);color:var(--ok)}.badge.warn{background:var(--warn-bg);color:var(--warn)}.badge.bad{background:var(--bad-bg);color:var(--bad)}.badge.info{background:var(--info-bg);color:var(--info)}.badge.muted{background:#f1f5f9;color:var(--text-soft)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}.stat{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 16px}.stat .n{font-size:24px;font-weight:800}.stat .l{font-size:13px;color:var(--text-soft)}.timeline{list-style:none;margin:0;padding:0}.timeline li{position:relative;padding:0 0 16px 22px;border-left:2px solid var(--border)}.timeline li:last-child{border-left-color:transparent}.timeline li:before{content:"";position:absolute;left:-7px;top:3px;width:12px;height:12px;border-radius:50%;background:var(--brand)}.timeline li.dim:before{background:var(--muted)}.timeline .t{font-size:12px;color:var(--muted)}.timeline .m{font-size:14px}.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:12px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);white-space:nowrap}th{background:var(--surface-2);font-size:12px;color:var(--text-soft);text-transform:uppercase;letter-spacing:.04em}tr:last-child td{border-bottom:none}td.wrap,th.wrap{white-space:normal}.qr-box{display:grid;place-items:center;gap:12px;padding:16px;background:#fff;border:1px dashed var(--border);border-radius:12px}.qr-box img{width:240px;height:240px;object-fit:contain;image-rendering:pixelated;background:#fff;border-radius:8px}.countdown{font-variant-numeric:tabular-nums;font-weight:800;font-size:20px}.alert{padding:12px 14px;border-radius:10px;font-size:14px;margin-bottom:14px}.alert.err{background:var(--bad-bg);color:var(--bad)}.alert.ok{background:var(--ok-bg);color:var(--ok)}.alert.info{background:var(--info-bg);color:var(--info)}.alert.warn{background:var(--warn-bg);color:var(--warn)}.admin-layout{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.admin-nav{background:var(--bg);color:#cbd5e1;padding:18px 12px;position:sticky;top:0;height:100vh}.admin-nav .brand{color:#fff;font-weight:800;padding:6px 12px 16px}.admin-nav a{display:block;padding:10px 12px;border-radius:9px;color:#cbd5e1;font-weight:600;font-size:14px;margin-bottom:3px}.admin-nav a.active,.admin-nav a:hover{background:#ffffff14;color:#fff}.admin-main{padding:22px;overflow-x:hidden;background:var(--surface-2)}.admin-main h1{font-size:22px;margin:0 0 18px}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.row.between{justify-content:space-between}.spacer{flex:1}.muted{color:var(--muted)}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.nowrap{white-space:nowrap}.center{text-align:center}.mt{margin-top:16px}.mb{margin-bottom:16px}.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.spinner{width:22px;height:22px;border:3px solid #c7d2fe;border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading{display:grid;place-items:center;gap:10px;padding:40px;color:var(--text-soft)}.code-list{display:grid;gap:6px;max-height:320px;overflow:auto;background:var(--bg);color:#e2e8f0;padding:12px;border-radius:10px;font-family:ui-monospace,monospace;font-size:13px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a80;display:grid;place-items:center;padding:16px;z-index:50}.modal{background:#fff;border-radius:14px;max-width:560px;width:100%;max-height:88vh;overflow:auto;padding:22px}@media(max-width:860px){.admin-layout{grid-template-columns:1fr}.admin-nav{position:static;height:auto;display:flex;flex-wrap:wrap;gap:6px}.admin-nav .brand{width:100%;padding-bottom:8px}.admin-nav a{margin:0}}