:root {
  --bg: #f6f5f1;
  --surface: #fcfcfb;
  --surface-2: #efeee8;
  --border: #dcdad2;
  --text: #0b0b0b;
  --text-2: #52514e;
  --text-3: #75736d;
  --accent: #2a78d6;
  --bar: #2a78d6;
  --bar-range: #a9c9f1;
  --warn-bg: #fff4dc;
  --warn-border: #e2a21a;
  --hi: #0b6b2e; --hi-bg: #e2f3e6;
  --md: #7a5300; --md-bg: #fbefd2;
  --lo: #52514e; --lo-bg: #ebeae4;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --border: #34332f;
    --text: #ffffff; --text-2: #c3c2b7; --text-3: #9a998f;
    --accent: #6aa8f0; --bar: #3987e5; --bar-range: #1f4f8a;
    --warn-bg: #2e2510; --warn-border: #b07d12;
    --hi: #7fd69a; --hi-bg: #173523; --md: #f0c56a; --md-bg: #3a2d10; --lo: #c3c2b7; --lo-bg: #2a2a27;
  }
}
:root[data-theme="dark"] {
  --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --border: #34332f;
  --text: #ffffff; --text-2: #c3c2b7; --text-3: #9a998f;
  --accent: #6aa8f0; --bar: #3987e5; --bar-range: #1f4f8a;
  --warn-bg: #2e2510; --warn-border: #b07d12;
  --hi: #7fd69a; --hi-bg: #173523; --md: #f0c56a; --md-bg: #3a2d10; --lo: #c3c2b7; --lo-bg: #2a2a27;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 920px; margin: 0 auto; padding: 32px 16px 80px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 1.35rem; margin: 48px 0 12px; padding-top: 8px; border-top: 1px solid var(--border); }
h3 { font-size: 1.05rem; margin: 24px 0 8px; }
p, li { color: var(--text); }
.lede { color: var(--text-2); font-size: 1.05rem; margin: 0 0 20px; }
.meta { color: var(--text-3); font-size: .875rem; }
a { color: var(--accent); }
nav.toc { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin: 20px 0; font-size: .95rem; }
nav.toc ol { margin: 4px 0 0; padding-left: 20px; columns: 2; column-gap: 32px; }
@media (max-width: 600px) { nav.toc ol { columns: 1; } }
.callout { background: var(--warn-bg); border-left: 4px solid var(--warn-border); border-radius: 6px; padding: 14px 16px; margin: 16px 0; }
.callout h3 { margin-top: 0; }
.callout ul { margin: 6px 0 0; padding-left: 20px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin: 16px 0; }
.table-wrap { overflow-x: auto; margin: 12px 0; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--surface-2); color: var(--text-2); font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tag { display: inline-block; font-size: .75rem; font-weight: 600; padding: 1px 8px; border-radius: 999px; white-space: nowrap; }
.tag.hi { color: var(--hi); background: var(--hi-bg); }
.tag.md { color: var(--md); background: var(--md-bg); }
.tag.lo { color: var(--lo); background: var(--lo-bg); }
.conf { font-size: .8rem; color: var(--text-3); }

/* chart */
.chart { position: relative; }
.chart-title { font-weight: 600; margin: 0 0 2px; }
.chart-sub { color: var(--text-2); font-size: .85rem; margin: 0 0 12px; }
.bar-row { display: grid; grid-template-columns: 170px 1fr 92px; align-items: center; gap: 10px; padding: 4px 0; cursor: default; }
.bar-row:hover .bar-label { color: var(--text); }
.bar-label { font-size: .85rem; color: var(--text-2); text-align: right; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar-track { position: relative; height: 18px; }
.bar-range { position: absolute; top: 5px; height: 8px; background: var(--bar-range); border-radius: 4px; }
.bar-fill { position: absolute; top: 2px; height: 14px; left: 0; background: var(--bar); border-radius: 0 4px 4px 0; }
.bar-value { white-space: nowrap; font-size: .85rem; font-variant-numeric: tabular-nums; color: var(--text); }
.chart-key { display: flex; gap: 16px; flex-wrap: wrap; font-size: .8rem; color: var(--text-2); margin-top: 10px; }
.chart-key span::before { content: ""; display: inline-block; width: 14px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; }
.chart-key .k-fill::before { background: var(--bar); }
.chart-key .k-range::before { background: var(--bar-range); height: 6px; vertical-align: 1px; }
.tip { position: absolute; pointer-events: none; background: var(--text); color: var(--surface); font-size: .8rem; padding: 6px 10px; border-radius: 6px; white-space: nowrap; opacity: 0; transition: opacity .1s; z-index: 2; }
@media (max-width: 600px) {
  .bar-row { grid-template-columns: 100px 1fr 46px; gap: 6px; }
  .bar-value .conf { display: none; }
  h1 { font-size: 1.6rem; }
}

/* subject topic cards */
details.subj { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; margin: 10px 0; }
details.subj summary { cursor: pointer; padding: 12px 16px; font-weight: 600; display: flex; justify-content: space-between; gap: 12px; align-items: center; list-style: none; }
details.subj summary::-webkit-details-marker { display: none; }
details.subj summary::after { content: "+"; color: var(--text-3); font-weight: 400; font-size: 1.2rem; }
details.subj[open] summary::after { content: "–"; }
details.subj .body { padding: 0 16px 14px; }
details.subj .body table { font-size: .875rem; }
.sumright { display: flex; gap: 8px; align-items: center; margin-left: auto; color: var(--text-2); font-weight: 400; font-size: .85rem; }
.recalled { font-size: .875rem; color: var(--text-2); margin: 8px 0 0; }
.recalled b { color: var(--text); }
footer { margin-top: 48px; color: var(--text-3); font-size: .85rem; }
ol.sources li { word-break: break-word; font-size: .875rem; }

/* ---------- shared site chrome ---------- */
:root { --p1: #2a78d6; --p2: #eb6834; --p3: #1baf7a; --p4: #eda100; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --p1: #3987e5; --p2: #d95926; --p3: #199e70; --p4: #c98500; }
}
:root[data-theme="dark"] { --p1: #3987e5; --p2: #d95926; --p3: #199e70; --p4: #c98500; }

.topnav { display: flex; justify-content: space-between; gap: 12px; font-size: .9rem; margin: -8px 0 20px; }
.topnav a { text-decoration: none; }

/* home cards */
.home-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; margin-top: 24px; }
.home-card { display: flex; flex-direction: column; gap: 8px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 22px; text-decoration: none; color: var(--text); transition: border-color .15s, transform .15s; }
.home-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.home-card .kicker { font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }
.home-card h2 { margin: 0; padding: 0; border: 0; font-size: 1.3rem; }
.home-card p { margin: 0; color: var(--text-2); font-size: .95rem; }
.home-card ul { margin: 4px 0 0; padding-left: 18px; color: var(--text-2); font-size: .9rem; }
.home-card .go { margin-top: auto; padding-top: 8px; font-weight: 600; color: var(--accent); }
@media (max-width: 680px) { .home-cards { grid-template-columns: 1fr; } }

/* schedule controls */
.controls { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.controls label { min-width: 0; }
.controls label { display: flex; flex-direction: column; gap: 4px; font-size: .8rem; color: var(--text-2); font-weight: 600; }
.controls input, .controls select { font: inherit; font-size: .95rem; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); min-width: 0; width: 100%; }
@media (max-width: 760px) { .controls { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 16px 0; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
.stat .v { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.2; }
.stat .l { font-size: .8rem; color: var(--text-2); }
@media (max-width: 600px) { .stats { grid-template-columns: 1fr 1fr; } .stats .stat:last-child:nth-child(odd) { grid-column: 1 / -1; } }

.warn { background: var(--warn-bg); border-left: 4px solid var(--warn-border); border-radius: 6px; padding: 10px 14px; margin: 12px 0; font-size: .9rem; }

/* phase timeline */
.phasebar { display: flex; height: 28px; border-radius: 6px; overflow: hidden; gap: 2px; background: var(--surface); }
.phasebar div { min-width: 2px; }
.phase-legend { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 10px; font-size: .85rem; }
.phase-legend .pl { border-top: 4px solid; padding-top: 6px; }
.phase-legend .pl b { display: block; color: var(--text); }
.phase-legend .pl span { color: var(--text-2); }
@media (max-width: 600px) { .phase-legend { grid-template-columns: 1fr 1fr; } }

/* today card */
.today { border: 2px solid var(--accent); }
.today .when { font-size: .8rem; color: var(--text-2); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.today .what { font-size: 1.25rem; font-weight: 700; margin: 4px 0; }

/* block list */
.blocks { list-style: none; margin: 0; padding: 0; }
.block { display: grid; grid-template-columns: 6px 1fr auto; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); }
.block:last-child { border-bottom: 0; }
.block .sw { align-self: stretch; border-radius: 3px; }
.block .nm { font-weight: 600; }
.block .sub { font-size: .8rem; color: var(--text-2); }
.block .dt { text-align: right; font-size: .85rem; font-variant-numeric: tabular-nums; white-space: nowrap; }
.block .dt small { display: block; color: var(--text-3); }
.block.current { background: var(--surface-2); border-radius: 8px; padding-left: 8px; padding-right: 8px; }
.block.past { opacity: .55; }
details.phase { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; margin: 10px 0; }
details.phase > summary { cursor: pointer; padding: 12px 16px; font-weight: 600; list-style: none; display: flex; gap: 10px; align-items: center; }
details.phase > summary::-webkit-details-marker { display: none; }
details.phase > summary .dot { width: 12px; height: 12px; border-radius: 3px; flex: none; }
details.phase > summary .rng { margin-left: auto; font-weight: 400; color: var(--text-2); font-size: .85rem; text-align: right; }
details.phase > .body { padding: 0 16px 12px; }
details.phase > .body > p { font-size: .9rem; color: var(--text-2); margin: 0 0 6px; }

/* daily template */
.slots { display: grid; gap: 8px; }
.slot { display: grid; grid-template-columns: 120px 1fr; gap: 12px; font-size: .9rem; padding: 8px 0; border-bottom: 1px solid var(--border); }
.slot:last-child { border-bottom: 0; }
.slot .t { font-variant-numeric: tabular-nums; color: var(--text-2); font-weight: 600; }
@media (max-width: 480px) { .slot { grid-template-columns: 1fr; gap: 2px; } }

/* mobile tightening for all pages */
@media (max-width: 600px) {
  main { padding-top: 20px; }
  h2 { font-size: 1.2rem; margin-top: 36px; }
  th, td { padding: 6px 8px; }
  table { font-size: .82rem; }
  .card { padding: 14px; }
  details.subj summary, details.phase > summary { padding: 12px; }
  details.subj .body, details.phase > .body { padding: 0 12px 12px; }
}
@media print { details > *:not(summary) { display: block !important; } .controls { display: none; } }

/* mode switch + tracks */
.seg { display: inline-flex; background: var(--surface-2); border-radius: 10px; padding: 3px; margin-bottom: 14px; max-width: 100%; }
.seg label { cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; padding: 7px 14px; border-radius: 8px; font-size: .9rem; font-weight: 600; color: var(--text-2); }
.seg input:checked + span { background: var(--surface); color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,.12); }
.seg input:focus-visible + span { outline: 2px solid var(--accent); }
body[data-mode="full"] .m-work, body[data-mode="work"] .m-full { display: none; }
.trk { display: inline-block; font-size: .7rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; padding: 1px 7px; border-radius: 4px; vertical-align: 2px; }
.trk.main { background: var(--p1); color: #fff; }
.trk.side { background: transparent; color: var(--text-2); border: 1px solid var(--border); }
.tracks { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.tracks h4 { margin: 4px 0 2px; font-size: .9rem; }
@media (max-width: 760px) { .tracks { grid-template-columns: 1fr; gap: 8px; } }
.today .what .trk { margin-right: 4px; }