:root {
  --ink: #1f2a44; --muted: #6b7489; --line: #e3e7ef; --bg: #f5f6fa; --card: #fff;
  --brand: #3b5bdb; --brand2: #edf2ff; --ok: #2b8a3e; --okbg: #d3f9d8; --warn: #e67700; --warnbg: #fff4e6; --bad: #c92a2a; --badbg: #ffe3e3;
  --mid: #fab005; --midbg: #fff3bf;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.55 'Nunito', -apple-system, 'PingFang SC', 'Noto Sans SC', sans-serif; color: var(--ink); background: var(--bg); }
a { color: var(--brand); text-decoration: none; }
h1, h2, h3 { font-family: 'Fredoka', 'Nunito', 'PingFang SC', sans-serif; font-weight: 600; margin: 0 0 .5em; }
h1 small, h3 small, .focus small { color: var(--muted); font-size: .6em; font-weight: 500; margin-left: .4em; }
.muted { color: var(--muted); } .small { font-size: 13px; } .err, .bad { color: var(--bad); } .ok { color: var(--ok); }
.mono { font-family: ui-monospace, Menlo, monospace; }

.top { display: flex; align-items: center; justify-content: space-between; padding: 10px 24px; background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; gap: 8px; }
.brand { font-family: 'Fredoka'; font-size: 20px; color: var(--ink); }
.brand small { font-family: 'Nunito', 'PingFang SC'; color: var(--muted); font-size: 12px; margin-left: 6px; }
nav a { margin-left: 18px; color: var(--muted); font-weight: 700; }
nav a.on { color: var(--brand); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin-bottom: 16px; }
.grid2 { display: grid; grid-template-columns: 1.3fr 1fr; gap: 16px; }
.grid2 > .card { margin: 0; }
section.grid2 { margin-bottom: 16px; }
@media (max-width: 800px) { .grid2 { grid-template-columns: 1fr; } }

.btn { display: inline-block; border: 1px solid var(--line); background: #fff; color: var(--ink); padding: 8px 14px; border-radius: 10px; font: inherit; font-weight: 700; cursor: pointer; }
.btn:hover { border-color: var(--brand); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.ghost { background: transparent; color: var(--muted); }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn.big { padding: 12px 18px; font-size: 16px; margin-top: 12px; width: 100%; }
.btn:disabled { opacity: .5; cursor: default; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.row.between { justify-content: space-between; }
label { display: block; margin: 8px 0; font-size: 13px; color: var(--muted); font-weight: 700; }
.row label { margin: 0; }
input, select, textarea { display: block; width: 100%; font: inherit; color: var(--ink); padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; margin-top: 3px; }
.row input, .row select { width: auto; }
.login { min-height: 100vh; display: grid; place-items: center; }
.login .card { width: 320px; text-align: center; }
.login input { margin: 10px 0; }
.login .btn { width: 100%; }

.tag { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; font-weight: 800; background: var(--brand2); color: var(--brand); }
.m-remediate { background: var(--warnbg); color: var(--warn); } .m-challenge { background: #f3d9fa; color: #9c36b5; }
.m-diagnostic { background: #e6fcf5; color: #0c8599; } .m-strategy { background: var(--okbg); color: var(--ok); }
.chip { display: inline-block; padding: 1px 8px; border-radius: 6px; background: #f1f3f5; font-size: 12px; font-weight: 700; color: #495057; }
.chip.red { background: var(--badbg); color: var(--bad); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0; }
.nid { display: inline-block; background: var(--ink); color: #fff; border-radius: 6px; padding: 0 6px; font-size: .8em; }
.focus { font-size: 20px; font-weight: 800; }
.reasons { margin: 6px 0; padding-left: 18px; color: var(--muted); font-size: 13px; }
.warn { background: var(--warnbg); border: 1px solid #ffd8a8; color: #a14a00; padding: 10px 14px; border-radius: 10px; margin-bottom: 12px; }
.warn.small { font-size: 13px; padding: 8px 10px; margin: 8px 0 0; }
details summary { cursor: pointer; color: var(--muted); font-weight: 700; font-size: 13px; margin: 6px 0; }
.genlog { margin-top: 10px; font-size: 14px; }
.genlog div { padding: 2px 0; }
.big-num { font-family: 'Fredoka'; font-size: 40px; }
.big-num small { font-size: 14px; color: var(--muted); font-family: 'Nunito', 'PingFang SC'; }
.doms { margin: 10px 0; }
.dom { display: grid; grid-template-columns: 90px 1fr 40px; gap: 8px; align-items: center; font-size: 13px; margin: 5px 0; }
.dom em { font-style: normal; color: var(--muted); text-align: right; }
.bar { height: 10px; background: #f1f3f5; border-radius: 99px; overflow: hidden; display: flex; }
.bar i { background: var(--ok); } .bar b { background: #b2f2bb; }

.lrow { display: grid; grid-template-columns: 70px 1fr 80px 90px 50px; gap: 10px; align-items: center; padding: 10px 6px; border-top: 1px solid var(--line); color: var(--ink); }
.lrow:hover { background: #f8f9fc; }
.lrow .seq { font-weight: 800; } .lrow .ttl small { display: block; color: var(--muted); font-size: 12px; }
.lrow .dt { color: var(--muted); font-size: 12px; text-align: right; }
.st { font-size: 12px; font-weight: 800; } .st-ready { color: var(--warn); } .st-done { color: var(--ok); } .st-failed { color: var(--bad); }

.lhead { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; flex-wrap: wrap; }
.prints { display: flex; gap: 6px; flex-wrap: wrap; }
.tabs { display: flex; gap: 6px; margin-bottom: 10px; }
.tabs button { border: 0; background: transparent; font: inherit; font-weight: 800; color: var(--muted); padding: 8px 14px; border-radius: 10px; cursor: pointer; }
.tabs button.on { background: #fff; color: var(--brand); border: 1px solid var(--line); }
.guide h3 { margin-top: 18px; }
.key { background: var(--brand2); padding: 10px 14px; border-radius: 10px; }
table.script, table.hints { width: 100%; border-collapse: collapse; }
.script td, .hints td { border-top: 1px solid var(--line); padding: 8px; vertical-align: top; }
.script .t { width: 90px; color: var(--muted); font-weight: 700; white-space: nowrap; }
.hints .a { font-weight: 800; width: 28%; }
.ex { border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin: 10px 0; }
.exh { font-weight: 800; color: var(--brand); }
.hint { background: #fff9db; padding: 8px 10px; border-radius: 8px; margin-top: 6px; font-size: 14px; }
pre.fig { font-family: ui-monospace, Menlo, monospace; font-size: 14px; line-height: 1.25; background: #f8f9fa; padding: 8px; border-radius: 6px; display: block; width: fit-content; margin: 6px 0; }

.pcard, .mcard { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin: 12px 0; }
.mcard.resolved { opacity: .65; }
.phead { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; margin-bottom: 6px; }
.sec { color: var(--muted); font-weight: 700; } .lvl { color: var(--mid); }
.ptext { font-size: 16px; margin: 4px 0; }
.pans { margin: 4px 0; }
.tools { opacity: .6; } .tools:hover { opacity: 1; }
.fbrow { display: grid; grid-template-columns: auto 1fr 2fr; gap: 8px; align-items: center; margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--line); }
.fbrow input { margin: 0; }
@media (max-width: 700px) { .fbrow { grid-template-columns: 1fr; } }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.seg button { border: 0; border-right: 1px solid var(--line); background: #fff; font: inherit; font-weight: 800; padding: 6px 10px; cursor: pointer; color: var(--muted); }
.seg button:last-child { border-right: 0; }
.seg button.on { background: var(--brand2); color: var(--brand); }
.seg button.r-right { background: var(--okbg); color: var(--ok); } .seg button.r-wrong { background: var(--badbg); color: var(--bad); }
.seg button.r-partial { background: var(--midbg); color: #946200; } .seg button.r-skipped { background: #e9ecef; color: #495057; }
.overall { margin-top: 18px; padding-top: 10px; border-top: 2px solid var(--line); }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 10px; z-index: 99; }
.toast.bad { background: var(--bad); }

.gwrap { overflow-x: auto; }
.gtab { border-collapse: separate; border-spacing: 4px; min-width: 900px; width: 100%; }
.gtab th { font-size: 12px; color: var(--muted); text-align: left; padding: 2px 4px; }
.gtab th.stg { writing-mode: vertical-rl; transform: rotate(180deg); text-align: center; width: 22px; }
.gtab td { vertical-align: top; background: #fafbfd; border-radius: 8px; padding: 4px; }
.node { position: relative; display: block; width: 100%; text-align: left; border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 4px 6px; margin: 3px 0; font: inherit; font-size: 12px; font-weight: 700; cursor: pointer; overflow: hidden; color: var(--ink); }
.node span { color: var(--muted); margin-right: 4px; font-size: 11px; }
.node i { position: absolute; left: 0; bottom: 0; height: 3px; background: var(--mid); }
.node.mastered { background: var(--okbg); border-color: #8ce99a; } .node.mastered i { background: var(--ok); }
.node.started { background: var(--midbg); border-color: #ffe066; }
.node.locked { opacity: .45; }
.node.sel { outline: 2px solid var(--brand); }
.detail h3 { margin-bottom: 4px; } .detail p { margin: 4px 0; }

/* ---------- print ---------- */
.ptool { position: sticky; top: 0; background: #fff; padding: 10px 20px; border-bottom: 1px solid var(--line); display: flex; gap: 10px; align-items: center; z-index: 5; }
body.printing { background: #e9ecef; }
.print-root { padding: 20px 0; }
.sheet { background: #fff; width: 8.5in; min-height: 11in; margin: 0 auto 20px; padding: .55in .6in; box-shadow: 0 2px 10px rgba(0,0,0,.08); font-size: 14px; }
.sh { display: flex; justify-content: space-between; align-items: center; border-bottom: 3px solid var(--ink); padding-bottom: 6px; margin-bottom: 14px; font-weight: 800; }
.shl { font-family: 'Fredoka'; font-size: 15px; letter-spacing: .5px; }
.shl span { background: var(--ink); color: #fff; padding: 1px 8px; border-radius: 5px; margin-left: 6px; }
.shl em { font-style: normal; color: var(--bad); margin-left: 8px; }
.shr { font-size: 13px; }
.stitle { font-size: 26px; margin-bottom: 10px; }
.notes, .sex, .reflect { border: 2px solid var(--ink); border-radius: 12px; padding: 10px 14px; margin: 10px 0; break-inside: avoid; }
.notes { background: #f3f6ff; }
.nh { font-family: 'Fredoka'; font-size: 15px; margin-bottom: 4px; }
.sex ol, .ak ol { margin: 4px 0; padding-left: 22px; }
.exa { font-weight: 800; }
.gh { font-size: 18px; border-bottom: 2px dashed #adb5bd; padding-bottom: 2px; margin: 18px 0 6px; break-after: avoid; }
.sp { break-inside: avoid; padding: 8px 0 6px; border-bottom: 1px solid #eee; }
.sq { display: grid; grid-template-columns: 30px 44px 1fr; align-items: start; }
.num { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: var(--ink); color: #fff; font-weight: 800; font-size: 13px; }
.stars { color: #f08c00; font-size: 12px; padding-top: 3px; }
.stxt { font-size: 15.5px; line-height: 1.5; }
.work { height: .55in; } .sp-M .work { height: 1in; } .sp-L .work { height: 1.6in; }
.ansline { text-align: right; font-weight: 800; }
.reflect p { margin: 10px 0; }
.ak { break-inside: avoid; padding: 6px 0; border-bottom: 1px solid #eee; }
.ak .aa { font-size: 15px; }
.sheet.guide { font-size: 13.5px; }

@page { size: letter; margin: .5in .55in; }
@media print {
  body, body.printing { background: #fff; }
  .no-print, .ptool { display: none !important; }
  .print-root { padding: 0; }
  .sheet { box-shadow: none; margin: 0; padding: 0; width: auto; min-height: 0; break-after: page; }
  .sheet:last-child { break-after: auto; }
  details { display: block; }
  a { color: inherit; }
}