:root{
  --navy:#0f2540; --navy-2:#17395f; --accent:#f5a623; --accent-d:#c9821a;
  --ok:#1f9d55; --ok-bg:#e8f8ee; --bad:#d64545; --bad-bg:#fdecec;
  --bg:#f4f6fa; --card:#fff; --line:#e2e7f0; --txt:#16202e; --muted:#6b7a90;
  --radius:14px; --shadow:0 2px 10px rgba(15,37,64,.07);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang TC","Microsoft JhengHei","Noto Sans TC","Heiti TC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);color:var(--txt);font-size:16px;line-height:1.6;
  padding-bottom:calc(72px + env(safe-area-inset-bottom));
}
body.no-tabs{padding-bottom:0}
a{color:var(--navy-2)}
header.top{position:sticky;top:0;z-index:20;background:var(--navy);color:#fff;
  padding:10px 14px;display:flex;align-items:center;gap:10px;box-shadow:0 2px 8px rgba(0,0,0,.15)}
header.top h1{font-size:16px;margin:0;font-weight:700;flex:1;line-height:1.3}
header.top .sub{font-size:11px;opacity:.75;font-weight:400;display:block}
header.top .who{font-size:12px;opacity:.9;text-align:right;line-height:1.3}
header.top .who b{display:block;font-size:13px}
header.top button.ic{background:rgba(255,255,255,.14);border:0;color:#fff;font-size:14px;
  padding:7px 10px;border-radius:9px;cursor:pointer}
main{padding:14px;max-width:900px;margin:0 auto}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:15px;margin-bottom:13px;box-shadow:var(--shadow)}
.card h2{margin:0 0 10px;font-size:16px}
h2.sec{font-size:13px;color:var(--muted);font-weight:700;letter-spacing:.6px;margin:18px 4px 9px}
p.note{color:var(--muted);font-size:13px;margin:8px 0 0}
button.btn{font-family:inherit;font-size:15px;font-weight:600;border-radius:11px;cursor:pointer;
  padding:11px 16px;border:1px solid var(--navy);background:var(--navy);color:#fff}
button.btn:active{filter:brightness(1.15)}
button.btn.ghost{background:#fff;color:var(--navy)}
button.btn.accent{background:var(--accent);border-color:var(--accent-d);color:#3a2500}
button.btn.danger{background:#fff;border-color:#e0b4b4;color:var(--bad)}
button.btn.sm{padding:7px 11px;font-size:13px;border-radius:9px}
button.btn[disabled]{opacity:.45;cursor:default}
button.btn.wide{width:100%}
.btnrow{display:flex;gap:9px;flex-wrap:wrap;margin-top:11px}
.btnrow>*{flex:1 1 auto}
label.f{display:block;font-size:13px;font-weight:700;color:var(--muted);margin:13px 0 5px}
select,input[type=text],input[type=password],input[type=number],input[type=datetime-local],textarea{
  width:100%;font-family:inherit;font-size:15px;padding:10px 12px;border:1.5px solid var(--line);
  border-radius:11px;background:#fff;color:var(--txt)}
textarea{min-height:110px;resize:vertical}
textarea.code{font-family:ui-monospace,Consolas,monospace;font-size:12px;min-height:170px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:5px}
.chip{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:6px 12px;
  font-family:inherit;font-size:13.5px;cursor:pointer;color:var(--txt)}
.chip.on{background:var(--navy);border-color:var(--navy);color:#fff}
.chip small{opacity:.7}
.list{display:flex;flex-direction:column;gap:9px}
.row{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;
  display:flex;gap:12px;align-items:flex-start}
.row .grow{flex:1;min-width:0}
.row .mini{font-size:12.5px;color:var(--muted)}
.kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;text-align:center}
.kpi>div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 6px}
.kpi b{display:block;font-size:20px;color:var(--navy)}
.kpi small{color:var(--muted);font-size:11.5px}
.badge{display:inline-block;background:#eef3fb;color:var(--navy-2);border-radius:999px;
  padding:2px 10px;font-size:12px;font-weight:600;white-space:nowrap}
.badge.amber{background:#fdf3e0;color:var(--accent-d)}
.badge.ok{background:var(--ok-bg);color:var(--ok)}
.badge.bad{background:var(--bad-bg);color:var(--bad)}
.stem{font-size:17.5px;font-weight:600;line-height:1.55;margin:0 0 13px;white-space:pre-wrap}
.opts{display:flex;flex-direction:column;gap:9px}
.opt{display:flex;gap:11px;align-items:flex-start;text-align:left;width:100%;background:#fff;
  border:1.5px solid var(--line);border-radius:12px;padding:12px 13px;font-family:inherit;
  font-size:15.5px;color:var(--txt);cursor:pointer;line-height:1.5}
.opt .key{flex:0 0 26px;height:26px;border-radius:50%;background:#eef3fb;color:var(--navy-2);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13.5px}
.opt .txt{flex:1;white-space:pre-wrap}
.opt.sel{border-color:var(--navy);background:#f3f7fd}
.opt.correct{border-color:var(--ok);background:var(--ok-bg)}
.opt.correct .key{background:var(--ok);color:#fff}
.opt.wrong{border-color:var(--bad);background:var(--bad-bg)}
.opt.wrong .key{background:var(--bad);color:#fff}
.opt[disabled]{cursor:default}
.fb{border-radius:12px;padding:12px 14px;margin-top:13px;font-size:14.5px;line-height:1.6}
.fb.ok{background:var(--ok-bg);border:1px solid #bfe6cf}
.fb.bad{background:var(--bad-bg);border:1px solid #f0c5c5}
.fb .title{font-weight:700;margin-bottom:4px}
.fb .exp{white-space:pre-wrap}
.fb .ref{color:var(--muted);font-size:12.5px;margin-top:6px}
.bar{height:7px;background:#e6ebf4;border-radius:99px;overflow:hidden;margin:6px 0 2px}
.bar>i{display:block;height:100%;background:var(--accent);border-radius:99px;transition:width .25s}
nav.tabs{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);backdrop-filter:blur(8px)}
nav.tabs button{flex:1;border:0;background:none;font-family:inherit;cursor:pointer;padding:8px 2px 7px;
  font-size:10.5px;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:2px}
nav.tabs button i{font-style:normal;font-size:18px;line-height:1.1}
nav.tabs button.on{color:var(--navy);font-weight:700}
.timerbar{position:sticky;top:0;z-index:15;background:var(--navy);color:#fff;padding:9px 14px;
  display:flex;align-items:center;gap:10px;font-size:14px}
.timerbar .clock{font-size:19px;font-weight:700;font-variant-numeric:tabular-nums}
.timerbar.warn{background:#8a2b2b}
.timerbar.warn .clock{color:#ffd9d9}
.navgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(42px,1fr));gap:7px;margin-top:9px}
.navgrid button{aspect-ratio:1;border:1.5px solid var(--line);background:#fff;border-radius:9px;
  font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;color:var(--muted)}
.navgrid button.done{background:var(--navy);border-color:var(--navy);color:#fff}
.navgrid button.cur{outline:3px solid var(--accent);outline-offset:-1px}
.empty{text-align:center;color:var(--muted);padding:32px 16px;font-size:14.5px}
.empty .big{font-size:36px;display:block;margin-bottom:8px}
.toast{position:fixed;left:50%;bottom:88px;transform:translate(-50%,20px);background:#16202e;color:#fff;
  padding:10px 17px;border-radius:11px;font-size:14px;opacity:0;pointer-events:none;transition:all .25s;
  z-index:60;max-width:88vw;text-align:center}
.toast.on{opacity:1;transform:translate(-50%,0)}
.login-wrap{max-width:380px;margin:8vh auto;padding:0 16px}
.login-wrap .logo{text-align:center;font-size:44px;margin-bottom:4px}
.login-wrap h1{text-align:center;font-size:20px;margin:0 0 4px}
.login-wrap p.sub{text-align:center;color:var(--muted);font-size:13px;margin:0 0 20px}
details.note-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:9px;overflow:hidden}
details.note-item>summary{padding:12px 14px;cursor:pointer;font-weight:700;font-size:15px;list-style:none;
  display:flex;justify-content:space-between;gap:8px;align-items:center}
details.note-item>summary::-webkit-details-marker{display:none}
details.note-item>summary::after{content:"▾";color:var(--muted)}
details.note-item[open]>summary::after{transform:rotate(180deg)}
details.note-item .body{padding:0 14px 13px;border-top:1px solid var(--line)}
details.note-item ul{margin:11px 0 0;padding-left:19px}
details.note-item li{margin-bottom:6px;font-size:14.5px;line-height:1.6}
details.note-item li::marker{color:var(--accent)}
table.data{width:100%;border-collapse:collapse;font-size:13.5px}
table.data th,table.data td{border-bottom:1px solid var(--line);padding:8px 7px;text-align:left}
table.data th{background:#eef3fb;font-size:12.5px;position:sticky;top:0}
table.data tr:hover td{background:#fafbfe}
.scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch}
mark{background:#fff3c4;padding:0 2px}
.modal{position:fixed;inset:0;background:rgba(10,20,35,.55);z-index:70;display:flex;
  align-items:center;justify-content:center;padding:16px}
.modal .box{background:#fff;border-radius:16px;max-width:560px;width:100%;max-height:86vh;overflow:auto;padding:18px}
.pw-list{background:#0f2540;color:#d8e4f5;border-radius:11px;padding:12px;font-family:ui-monospace,Consolas,monospace;
  font-size:13px;line-height:1.8;max-height:300px;overflow:auto;margin-top:10px}
@media(max-width:520px){ .kpi{grid-template-columns:repeat(2,1fr)} .row2{grid-template-columns:1fr} }