:root{--bg:#f6f7f9;--card:#fff;--ink:#1c2230;--muted:#6b7385;--line:#e3e6ec;--brand:#1f5eff;--brand-ink:#fff;--bad:#c62828;--ok:#1b7f43;--warn:#a86400;--radius:10px}
@media (prefers-color-scheme:dark){:root{--bg:#12151b;--card:#1b2029;--ink:#e8ebf1;--muted:#98a1b3;--line:#2b3240;--brand:#5b8cff;--bad:#ff6b6b;--ok:#4cc27e;--warn:#e0a040}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang HK","Microsoft JhengHei",sans-serif}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
header.top{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
header.top .in{max-width:1180px;margin:auto;padding:10px 16px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
header.top .brand{font-weight:700;font-size:17px;color:var(--ink);margin-right:auto}
header.top nav{display:flex;gap:4px;flex-wrap:wrap}
header.top nav a{padding:6px 10px;border-radius:8px;color:var(--ink)}
header.top nav a.on,header.top nav a:hover{background:var(--bg);text-decoration:none}
main{max-width:1180px;margin:auto;padding:20px 16px 60px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:18px}
.narrow{max-width:420px;margin:8vh auto}
h1{font-size:22px;margin:0 0 14px}h2{font-size:18px;margin:0 0 10px}h3{font-size:15px;margin:0 0 6px}
.muted{color:var(--muted)}.small{font-size:13px}
label{display:block;font-weight:600;font-size:13px;margin:10px 0 4px}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=search],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font:inherit}
textarea{min-height:60px}
.btn,button{display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit;font-weight:600;cursor:pointer;text-decoration:none!important;white-space:nowrap}
.btn.primary,button.primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
.btn.danger,button.danger{color:var(--bad)}
.btn.sm,button.sm{padding:5px 9px;font-size:13px}
.full{width:100%;justify-content:center}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.check{display:flex;gap:6px;align-items:center;font-weight:400;margin:8px 0}
.flash{padding:10px 14px;border-radius:8px;margin-bottom:14px;border:1px solid var(--line);background:var(--card)}
.flash.error{border-color:var(--bad);color:var(--bad)}.flash.ok{border-color:var(--ok);color:var(--ok)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-bottom:18px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px}
.stat b{display:block;font-size:24px}.stat span{color:var(--muted);font-size:13px}
.tbl{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:14px}
th,td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);white-space:nowrap}
td.num,th.num{text-align:right}
.tag{display:inline-block;padding:1px 8px;border-radius:999px;font-size:12px;border:1px solid var(--line);color:var(--muted)}
.tag.bad{color:var(--bad);border-color:var(--bad)}.tag.ok{color:var(--ok);border-color:var(--ok)}.tag.warn{color:var(--warn);border-color:var(--warn)}
.docs{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.doc{display:flex;flex-direction:column;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;color:var(--ink)}
.doc:hover{border-color:var(--brand);text-decoration:none}
.doc .ic{width:34px;height:42px;border-radius:4px;background:var(--bad);color:#fff;font-size:10px;font-weight:700;display:flex;align-items:flex-end;justify-content:center;padding-bottom:5px}
.sec{margin-bottom:26px}.sec>h2{display:flex;gap:8px;align-items:baseline}
details>summary{cursor:pointer;font-weight:600}
details.edit{margin-top:8px}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace}
/* viewer */
.viewer-bar{position:sticky;top:0;z-index:5;background:var(--card);border-bottom:1px solid var(--line);padding:8px 16px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.viewer-bar .t{font-weight:700;margin-right:auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}
#pages{padding:14px 8px 60px;display:flex;flex-direction:column;align-items:center;gap:12px;background:#525659;min-height:80vh}
#pages canvas{background:#e9eaec linear-gradient(90deg,#e9eaec 0,#f4f5f6 50%,#e9eaec 100%) 0 0/200% 100%;animation:pageload 1.4s linear infinite;box-shadow:0 2px 8px rgba(0,0,0,.35);max-width:100%;height:auto;-webkit-user-select:none;user-select:none}
#status{color:#eee;padding:30px}
@media (max-width:640px){.grid2{grid-template-columns:1fr}h1{font-size:19px}.card{padding:14px}th,td{padding:7px 6px}.hide-sm{display:none}}
@media print{body{display:none}}

#pages canvas.ready{background:#fff;animation:none}
@keyframes pageload{to{background-position:-200% 0}}
@media (prefers-reduced-motion:reduce){#pages canvas{animation:none}}