:root{--bg:#f4f6f9;--card:#fff;--ink:#1f2937;--muted:#8a94a6;--accent:#3b82f6;--accent-soft:#eaf2fe;
  --danger:#ef4444;--ok:#10b981;--warn:#f59e0b;--line:#eef0f4;--radius:14px}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);
  padding-bottom:calc(76px + env(safe-area-inset-bottom))}
header{position:sticky;top:0;z-index:10;background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;
  padding:14px 16px;font-size:18px;font-weight:600;display:flex;justify-content:space-between;align-items:baseline}
header small{font-weight:400;opacity:.85;font-size:12px}
main{padding:4px 0}
.page{display:none}.page.on{display:block}
.card{background:var(--card);border-radius:var(--radius);margin:12px 12px 0;padding:14px;box-shadow:0 1px 3px rgba(16,24,40,.06)}
.card h3{font-size:13px;color:var(--muted);margin-bottom:10px;font-weight:600;letter-spacing:.5px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}
.big{font-size:24px;font-weight:700}
.sub{font-size:12px;color:var(--muted);margin-top:2px}
ul{list-style:none}
li{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
li:last-child{border-bottom:none}
.muted{color:var(--muted);font-size:12px}
.neg{color:var(--danger)}.pos{color:var(--ok)}
canvas{max-height:220px!important}
button{border:none;border-radius:10px;padding:10px 16px;font-size:15px;background:var(--accent);color:#fff;font-weight:500}
button:active{opacity:.85}
button.ghost{background:#eef1f5;color:var(--ink)}
button.del{background:none;color:var(--danger);padding:4px 6px;font-size:13px}
button.mini{padding:6px 10px;font-size:13px;border-radius:8px}
button.pill{background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:6px 12px;font-size:13px}
input,select,textarea{width:100%;padding:10px;border:1px solid #dfe3ea;border-radius:10px;font-size:15px;margin:4px 0 10px;background:#fff;color:var(--ink)}
textarea{font-family:inherit;resize:vertical}
label{font-size:12px;color:var(--muted)}
.seg{display:flex;gap:6px;margin-bottom:12px;flex-wrap:wrap}
.seg button{flex:1;min-width:64px;background:#eef1f5;color:var(--ink);font-size:13px;padding:8px 4px}
.seg button.on{background:var(--accent);color:#fff}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.chip{border:1px solid #dfe3ea;background:#fff;border-radius:999px;padding:6px 12px;font-size:13px;color:var(--ink)}
.chip.on{background:var(--accent);border-color:var(--accent);color:#fff}
.bar{background:#eef1f5;border-radius:6px;height:8px;overflow:hidden;margin-top:4px}
.bar i{display:block;height:100%;background:var(--accent)}
.bar i.over{background:var(--danger)}
.bar i.debt{background:var(--warn)}
.heat{display:grid;grid-template-columns:repeat(15,1fr);gap:3px}
.heat i{aspect-ratio:1;border-radius:3px;background:#eef1f5}
.heat i.on{background:var(--accent)}
.badge{font-size:11px;background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:2px 8px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:6px 4px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:500;white-space:nowrap}
td input,td select{margin:0;padding:6px;font-size:13px}
nav{position:fixed;bottom:0;left:0;right:0;background:#fff;display:flex;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);z-index:20}
nav button{flex:1;background:none;color:var(--muted);font-size:11px;padding:8px 0 6px;border-radius:0}
nav button .ic{display:block;font-size:20px;font-style:normal}
nav button.on{color:var(--accent)}
.toast{position:fixed;top:14px;left:50%;transform:translateX(-50%);background:#111827;color:#fff;padding:8px 18px;
  border-radius:999px;font-size:14px;display:none;z-index:100;max-width:86%}
#login{position:fixed;inset:0;background:var(--bg);display:none;align-items:center;justify-content:center;z-index:99}
#login.on{display:flex}
#login .card{width:82%;max-width:340px;margin:0}
.answer{font-size:14px;line-height:1.7;white-space:pre-wrap}
details>summary{cursor:pointer;color:var(--accent);font-size:13px;padding:8px 0;list-style:none}
details>summary::before{content:"＋ "}