:root {
  color-scheme: light;
  --bg: #f6f5f1; --card: #ffffff; --ink: #15171c; --muted: #6a7080; --line: #e3e1da; --dot: #dcd9d0;
  --glass: rgb(255 255 255 / .72);
  --shadow: 0 1px 2px rgb(21 23 28 / .06), 0 10px 28px -16px rgb(21 23 28 / .25);
  --hot: #e2553a; --g0: #6d4dff; --g1: #0f9f99; --g2: #ee8a34; --g3: #dc4a7f; --g4: #3478f6; --g5: #46a046; --g6: #b45ad3; --g7: #c99a10; --gfree: #8a909c;
  --accent: var(--g0);
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Space Grotesk", var(--sans);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --ease: cubic-bezier(.2, .8, .2, 1);
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0b0d12; --card: #151922; --ink: #eceef3; --muted: #9098a8; --line: #272c38; --dot: #1b1f29;
    --glass: rgb(11 13 18 / .7);
    --shadow: 0 1px 2px rgb(0 0 0 / .4), 0 12px 32px -16px rgb(0 0 0 / .8);
    --hot: #ff7a59; --g0: #8f7bff; --g1: #2cc4bd; --g2: #ff9f55; --g3: #f0679a; --g4: #5b9bff; --g5: #66c25f; --g6: #cf7cec; --g7: #e6b72c; --gfree: #9aa1ad;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; font: 15px/1.55 var(--sans); color: var(--ink);
  background: var(--bg) radial-gradient(var(--dot) 1px, transparent 1.4px) 0 0 / 22px 22px;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: ""; position: fixed; inset: -20vh -10vw auto; height: 70vh; z-index: -1; pointer-events: none;
  background: radial-gradient(40% 60% at 25% 30%, color-mix(in oklab, var(--g0) 16%, transparent), transparent 70%),
              radial-gradient(35% 50% at 75% 20%, color-mix(in oklab, var(--g1) 14%, transparent), transparent 70%);
  filter: blur(20px);
}
body:has(#chart:not([hidden])) { background: var(--bg); }
body:has(#chart:not([hidden]))::before { display: none; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); letter-spacing: -.02em; margin: 0; }
code { font: .88em var(--mono); background: color-mix(in oklab, var(--ink) 7%, transparent); padding: .1em .35em; border-radius: 5px; }
[hidden] { display: none !important; }
.sr { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- top bar ---------- */
.bar {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 16px;
  padding: 12px clamp(16px, 4vw, 40px); background: var(--glass); backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid color-mix(in oklab, var(--line) 70%, transparent);
}
.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; font: 700 18px var(--display); letter-spacing: -.03em; }
.brand svg { width: 28px; height: 28px; }
.brand i { color: var(--accent); font-style: normal; }
.tools { margin-left: auto; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; justify-content: flex-end; }
.gh { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; color: var(--muted); margin-left: auto; }
.tools:not([hidden]) + .gh { margin-left: 0; }
.gh:hover { color: var(--ink); background: color-mix(in oklab, var(--ink) 6%, transparent); }
.gh svg { width: 20px; height: 20px; fill: currentColor; }
.range { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.range input { accent-color: var(--accent); width: 120px; }
.range output { font: 600 13px var(--mono); color: var(--ink); min-width: 2ch; }

.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 12px; border: 1px solid var(--line);
  font: 600 14px var(--sans); color: var(--ink); background: var(--card); text-decoration: none; cursor: pointer;
  transition: transform .2s var(--ease), box-shadow .2s, background .2s;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary { border-color: transparent; color: #fff; background: linear-gradient(135deg, var(--g0), color-mix(in oklab, var(--g0) 55%, var(--g3))); box-shadow: 0 8px 24px -10px var(--g0); }
.btn.ghost { background: transparent; }
.tools .btn { padding: 7px 12px; font-size: 13px; }

/* ---------- landing ---------- */
#landing { max-width: 1180px; margin: 0 auto; padding: clamp(32px, 7vw, 88px) clamp(16px, 4vw, 40px) 64px; }
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(24px, 5vw, 64px); align-items: center; }
.eyebrow { margin: 0 0 10px; font: 600 12px var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.hero h1 { font-size: clamp(2.6rem, 6.4vw, 4.8rem); line-height: .98; letter-spacing: -.045em; }
.hero h1 em {
  font-style: normal; background: linear-gradient(100deg, var(--g0), var(--g3) 55%, var(--g2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { font-size: 1.08rem; color: var(--muted); max-width: 34em; margin: 22px 0 28px; }
.steps { list-style: none; counter-reset: s; padding: 0; margin: 0 0 28px; display: grid; gap: 12px; }
.steps li { counter-increment: s; display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.steps li::before {
  content: counter(s); display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; flex: none;
  font: 700 12px var(--mono); color: var(--accent); background: color-mix(in oklab, var(--accent) 12%, transparent);
}
.bm {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px 8px 10px; border-radius: 999px; cursor: grab;
  font: 700 14px var(--display); text-decoration: none; background: var(--card); box-shadow: var(--shadow);
  border: 1.5px dashed color-mix(in oklab, var(--accent) 55%, var(--line)); animation: nudge 3.2s 1.5s var(--ease) infinite;
}
.bm svg { width: 22px; height: 22px; }
.bm:active { cursor: grabbing; }
@keyframes nudge { 0%, 82%, 100% { transform: none; } 88% { transform: translateY(-3px) rotate(-2deg); } 94% { transform: translateY(0) rotate(1.5deg); } }
.alt { display: flex; gap: 10px; flex-wrap: wrap; }
.privacy { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; margin-top: 22px; }
.privacy svg { width: 16px; height: 16px; fill: var(--g1); flex: none; }

.ill { margin: 0; padding: 22px; border-radius: 24px; background: color-mix(in oklab, var(--card) 70%, transparent); border: 1px solid var(--line); box-shadow: var(--shadow); }
.ill svg { display: block; width: 100%; height: auto; overflow: visible; }
.ill use { --nf: color-mix(in oklab, var(--c) 9%, var(--card)); --ns: var(--line); animation: pop .7s var(--d) var(--ease) both; transform-box: fill-box; transform-origin: center; }
.ill use.current { --ns: var(--c); animation: pop .7s var(--d) var(--ease) both, glow 2.6s calc(var(--d) + 1s) ease-in-out infinite; }
.ill use.planned { --nf: transparent; --ns: color-mix(in oklab, var(--c) 60%, var(--line)); stroke-dasharray: 4 3; }
.ill .lines path { fill: none; stroke: color-mix(in oklab, var(--muted) 45%, transparent); stroke-width: 1.6; stroke-dasharray: 100; animation: draw 1s var(--d) ease-out both; }
.ill .lines path.p { animation: draw 1s var(--d) ease-out both, flow 1.6s calc(var(--d) + 1s) linear infinite; }
@keyframes pop { from { opacity: 0; transform: translateY(10px) scale(.94); } }
@keyframes draw { from { stroke-dashoffset: 100; } to { stroke-dashoffset: 0; } }
@keyframes flow { from { stroke-dasharray: 3 3; stroke-dashoffset: 0; } to { stroke-dasharray: 3 3; stroke-dashoffset: -6; } }
@keyframes glow { 50% { filter: drop-shadow(0 0 6px var(--c)); } }

.faq { margin-top: clamp(48px, 8vw, 96px); display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 16px 18px; }
.faq summary { font-weight: 600; cursor: pointer; }
.faq p { color: var(--muted); margin: 10px 0 0; font-size: 14px; }

/* ---------- chart: summary ---------- */
#chart { padding: 24px 0 48px; }
.summary {
  margin: 0 clamp(16px, 4vw, 40px); padding: 18px clamp(18px, 3vw, 32px); display: grid; grid-template-columns: auto 1fr minmax(240px, 340px);
  gap: clamp(18px, 3vw, 40px); align-items: center; background: color-mix(in oklab, var(--card) 85%, transparent);
  border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); backdrop-filter: blur(8px);
}
.ring { position: relative; width: 88px; height: 88px; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 10; }
.ring .bg { stroke: color-mix(in oklab, var(--ink) 8%, transparent); }
#arc { stroke: url(#rg); stroke-linecap: round; transition: stroke-dashoffset 1.6s var(--ease) .2s; }
.ring div { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; }
.ring b { font: 700 23px var(--display); letter-spacing: -.03em; line-height: 1; }
.ring small { color: var(--muted); font-size: 11px; margin-top: 4px; }
.head h1 { font-size: clamp(1.4rem, 2.5vw, 1.9rem); line-height: 1.1; }
.sub { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.stats { display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 8px 28px; margin: 18px 0 0; }
.stats dt { font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); }
.stats dd { margin: 2px 0 0; white-space: nowrap; }
.stats b { font: 700 20px var(--display); letter-spacing: -.02em; }
.stats small { color: var(--muted); font-size: 12px; }
.legend { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.legend li { display: grid; grid-template-columns: 1fr auto; gap: 3px 10px; font-size: 13px; cursor: default; border-radius: 8px; padding: 2px 4px; }
.legend li:hover, .legend li:focus-visible { background: color-mix(in oklab, var(--c) 9%, transparent); }
.legend .name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: flex; align-items: center; gap: 8px; }
.legend .name::before { content: ""; width: 9px; height: 9px; border-radius: 3px; background: var(--c); flex: none; }
.legend .pc { font: 600 12px var(--mono); color: var(--muted); }
.legend .meter { grid-column: 1 / -1; height: 4px; border-radius: 4px; background: color-mix(in oklab, var(--c) 14%, transparent); overflow: hidden; }
.legend .meter i { display: block; height: 100%; width: var(--w); background: var(--c); border-radius: inherit; transform-origin: left; animation: grow 1.4s .3s var(--ease) backwards; }
@keyframes grow { from { transform: scaleX(0); } }

.hint { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 20px; margin: 22px clamp(16px, 4vw, 40px) 0; color: var(--muted); font-size: 12.5px; }
.viewnote { flex: 1; min-width: 200px; }
.keys { display: flex; align-items: center; gap: 6px 14px; flex-wrap: wrap; }
.k { display: inline-block; width: 18px; height: 11px; border-radius: 4px; margin-right: 6px; vertical-align: -1px; }
.k.done { border: 1px solid var(--muted); }
.k.current { border: 2px solid var(--muted); }
.k.planned { border: 1.5px dashed var(--muted); }
.k.crit { height: 3px; border-radius: 2px; background: var(--hot); }

/* ---------- insights ---------- */
.insights { margin: 16px clamp(16px, 4vw, 40px) 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 14px; align-items: start; animation: rise .6s .5s var(--ease) backwards; }
.ins { padding: 16px 20px 18px; border-radius: 20px; background: color-mix(in oklab, var(--card) 85%, transparent); border: 1px solid var(--line); box-shadow: var(--shadow); }
.ins h3 { font-size: 16px; display: flex; align-items: center; gap: 9px; }
.ins h3::before { content: ""; width: 8px; height: 8px; border-radius: 2px; transform: rotate(45deg); background: var(--hot); }
.ins.warn h3::before { background: var(--g7); }
.ins p { margin: 4px 0 12px; color: var(--muted); font-size: 13px; }
.ins ul, .chain { list-style: none; margin: 0; padding: 0; }
.ins .chip {
  all: unset; cursor: pointer; font: 600 12px var(--mono); padding: 4px 9px; border-radius: 8px; white-space: nowrap;
  color: color-mix(in oklab, var(--c) 75%, var(--ink)); background: color-mix(in oklab, var(--c) 12%, var(--card)); border: 1px solid color-mix(in oklab, var(--c) 35%, var(--line));
  transition: background .2s, transform .2s var(--ease);
}
.ins .chip:hover, .ins .chip:focus-visible { background: color-mix(in oklab, var(--c) 22%, var(--card)); transform: translateY(-1px); }
.chain { display: flex; flex-wrap: wrap; align-items: center; row-gap: 8px; }
.chain li { display: flex; align-items: center; }
.chain li + li::before { content: ""; width: 26px; height: 2px; margin: 0 4px; border-radius: 2px; background: linear-gradient(90deg, var(--hot), color-mix(in oklab, var(--hot) 35%, transparent)); }
.necks ul { display: grid; gap: 9px; }
.necks li { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 4px 10px; font-size: 13px; }
.necks .what { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--muted); }
.necks .n { font: 700 13px var(--mono); color: var(--hot); }
.necks .meter { grid-column: 1 / -1; height: 4px; border-radius: 4px; background: color-mix(in oklab, var(--hot) 12%, transparent); overflow: hidden; }
.necks .meter i { display: block; height: 100%; width: var(--w); border-radius: inherit; background: linear-gradient(90deg, color-mix(in oklab, var(--hot) 60%, var(--g2)), var(--hot)); transform-origin: left; animation: grow 1.2s .7s var(--ease) backwards; }
.warn ul { display: grid; gap: 8px; font-size: 13px; color: var(--muted); }

/* ---------- degree flowchart ---------- */
.hint h1 { color: var(--ink); font-size: 20px; }
.chart-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 24px; margin: 16px clamp(16px, 4vw, 40px) 0; }
.chart-controls label { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.chart-controls input { width: 100px; accent-color: var(--accent); cursor: pointer; }
.chart-controls input[type="checkbox"] { width: 16px; height: 16px; margin: 0; }
.chart-controls select { padding: 5px 8px; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.chart-controls output { min-width: 42px; color: var(--ink); font: 600 12px var(--mono); }
.chart-controls .btn { padding: 6px 12px; font-size: 12px; }
.priority-key { display: flex; align-items: center; gap: 8px; margin: 12px clamp(16px, 4vw, 40px) 0; font-size: 11px; color: var(--muted); }
.priority-key i { width: 130px; height: 10px; border-radius: 6px; background: linear-gradient(90deg, #dbeecd, #e5b958, #96420e); }
.board { overflow: auto; padding: 16px clamp(16px, 4vw, 40px); cursor: grab; scrollbar-width: thin; }
.board.grabbing { cursor: grabbing; user-select: none; }
.track { position: relative; min-width: 100%; min-height: 100%; overflow: hidden; }
.track .overview { position: absolute; margin: 0; transform-origin: top left; }
.degree-details { margin: 12px clamp(16px, 4vw, 40px); }
.degree-details > summary { cursor: pointer; font-size: 14px; font-weight: 600; }
.degree-details .summary { margin: 16px 0; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.meta { color: var(--muted); }
@keyframes dash { to { stroke-dashoffset: -11; } }
#chart.focus .tcard:not(.lit) { opacity: .25; }
#chart.focus .course-ref:not(.lit) { opacity: .25; }
#chart.focus .tree-lines path:not(.lit) { opacity: .08; }
#chart.focus .tree-lines path.lit { stroke-width: 3; }
.tree-lines path.crit { stroke: var(--hot); stroke-width: 2.6; }
.plan-insights { margin: 24px clamp(16px, 4vw, 40px); }
.plan-insights > summary { cursor: pointer; font-size: 14px; font-weight: 600; }
.plan-insights .insights { margin: 16px 0 0; }
.fine { margin: 6px clamp(16px, 4vw, 40px) 0; color: var(--muted); font-size: 12px; max-width: 70em; }
.missing-note { color: var(--g7); font-weight: 700; }

/* ---------- course modal: prerequisite flowchart ---------- */
.course .trail { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 0 40px 12px 0; font: 600 12px var(--mono); color: var(--muted); }
.course .trail button { all: unset; cursor: pointer; padding: 3px 8px; border-radius: 7px; background: color-mix(in oklab, var(--ink) 6%, transparent); }
.course .trail button:hover, .course .trail button:focus-visible { background: color-mix(in oklab, var(--ink) 12%, transparent); color: var(--ink); }
.course .trail b { color: var(--ink); padding: 3px 0; }
.flag.warn { color: color-mix(in oklab, var(--g7) 85%, var(--ink)); background: color-mix(in oklab, var(--g7) 14%, transparent); }
.tree-scroll { overflow: auto; margin: 0 -28px; padding: 16px 28px 22px; max-height: 58vh; background: radial-gradient(color-mix(in oklab, var(--ink) 9%, transparent) 1px, transparent 1.3px) 0 0 / 18px 18px; border-block: 1px solid var(--line); }
.tree { position: relative; margin: 0 auto; }
.tree-lines { position: absolute; inset: 0; overflow: visible; pointer-events: none; }
.tree-lines path { fill: none; stroke: color-mix(in oklab, var(--ink) 70%, transparent); stroke-width: 1.8; stroke-linecap: butt; }
.tree-lines path.miss { stroke: color-mix(in oklab, var(--g7) 85%, var(--ink)); }
.tcard {
  all: unset; box-sizing: border-box; position: absolute; width: 200px; height: 92px; display: grid; align-content: start; gap: 3px;
  padding: 9px 11px 9px 14px; border-radius: 12px; background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow);
  transition: opacity .2s, transform .2s var(--ease), box-shadow .2s;
}
button.tcard { cursor: pointer; }
.tcard::before { content: ""; position: absolute; left: 0; top: 10px; bottom: 10px; width: 3.5px; border-radius: 0 4px 4px 0; background: var(--c, var(--gfree)); }
button.tcard:hover, button.tcard:focus-visible { box-shadow: 0 0 0 2px color-mix(in oklab, var(--c) 50%, transparent), var(--shadow); outline: none; }
button.tcard:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.tcard.done { background: color-mix(in oklab, var(--c) 8%, var(--card)); }
.tcard.planned { background: var(--card); border: 1.5px dashed color-mix(in oklab, var(--c) 55%, var(--line)); box-shadow: none; }
.tcard.missing { --c: var(--g7); background: color-mix(in oklab, var(--g7) 8%, var(--card)); border: 1.5px dashed color-mix(in oklab, var(--g7) 60%, var(--line)); box-shadow: none; }
.tcard.current, .tcard.registered { border-color: var(--accent); }
.tcard.crit { border-color: color-mix(in oklab, var(--hot) 60%, var(--line)); }
.tcard.root { box-shadow: 0 0 0 2px var(--c), 0 0 28px -4px color-mix(in oklab, var(--c) 70%, transparent), var(--shadow); }
.tcard .top { display: flex; justify-content: space-between; align-items: center; gap: 6px; }
.tcard .code { font: 700 11.5px var(--mono); color: color-mix(in oklab, var(--c) 75%, var(--ink)); }
.tcard .title { font-weight: 600; font-size: 12.5px; line-height: 1.2; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tcard .meta { margin: 0; line-height: 1.2; font-size: 11px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tcard:not(.or):not(.missing) { background: var(--c); color: var(--card-ink); border-color: color-mix(in srgb, var(--card-ink) 35%, var(--c)); }
.tcard:not(.or):not(.missing)::before { display: none; }
.tcard:not(.or):not(.missing) .code, .tcard:not(.or):not(.missing) .meta, .tcard:not(.or):not(.missing) .missing-note { color: inherit; }
.tcard:not(.or):not(.missing) .chip { color: inherit; background: transparent; border: 1px solid currentColor; }
.tcard.current, .tcard.registered { border-width: 2px; }
.overview .tcard { width: 164px; height: 66px; padding: 7px 9px; gap: 3px; border-radius: 6px; box-shadow: none; }
.overview .tcard .code { font-size: 12px; }
.overview .tcard .title { font-size: 12px; }
.overview .tcard .meta { display: none; }
.overview .tcard .chip { padding: 1px 4px; font-size: 9px; line-height: 1.1; }
.course-ref { position: absolute; border: 1px dashed currentColor; border-radius: 8px; background: var(--c); color: var(--card-ink); font: 600 11px var(--mono); cursor: pointer; padding: 4px 6px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.ins .chip { background: var(--c); color: var(--card-ink); }
.chip { font: 600 10px var(--sans); padding: 2px 7px; border-radius: 99px; white-space: nowrap; color: var(--muted); background: color-mix(in oklab, var(--ink) 7%, transparent); }
.chip.done { color: var(--g5); background: color-mix(in oklab, var(--g5) 14%, transparent); }
.chip.current, .chip.registered { color: var(--accent); background: color-mix(in oklab, var(--accent) 14%, transparent); }
.chip.missing { color: color-mix(in oklab, var(--g7) 85%, var(--ink)); background: color-mix(in oklab, var(--g7) 16%, transparent); }
.tcard.or { --c: var(--muted); background: color-mix(in oklab, var(--card) 70%, transparent); border-style: dashed; }
.tcard.or .code { color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-size: 10px; }
.alts { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.alt { all: unset; cursor: pointer; font: 600 11px var(--mono); padding: 2px 7px; border-radius: 7px; color: var(--muted); border: 1px dashed var(--line); }
.alt.pick { color: var(--ink); border: 1px solid color-mix(in oklab, var(--c) 60%, var(--line)); background: color-mix(in oklab, var(--c) 12%, transparent); }
.alt.done.pick::before { content: "✓ "; color: var(--g5); }
.alt:hover, .alt:focus-visible { color: var(--ink); border-color: var(--ink); }
.alts small { color: var(--muted); font-size: 11px; }
.more { position: absolute; left: 50%; transform: translateX(-50%); font: 600 10px var(--sans); color: var(--muted); white-space: nowrap; }
.more.up { top: -17px; }
.more.down { bottom: -17px; }

/* ---------- detail dialog & toast ---------- */
dialog {
  width: min(1040px, calc(100vw - 32px)); max-height: min(90vh, 980px); padding: 0; border: 1px solid var(--line); border-radius: 22px;
  color: var(--ink); background: var(--card); box-shadow: 0 30px 80px -20px rgb(0 0 0 / .45);
}
dialog[open] { animation: rise .35s var(--ease); }
dialog::backdrop { background: rgb(10 12 18 / .4); backdrop-filter: blur(4px); }
@keyframes rise { from { opacity: 0; transform: translateY(14px) scale(.98); } }
dialog form { padding: 26px 28px 24px; border-top: 5px solid var(--c); }
dialog .eyebrow { color: var(--muted); padding-right: 30px; }
dialog h3 { font-size: 24px; line-height: 1.15; }
dialog .meta { white-space: normal; font-size: 13px; margin: 8px 0 0; }
dialog h4 { margin: 20px 0 8px; font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); }
dialog ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.pre li, .opts li { padding: 7px 10px; border-radius: 9px; background: color-mix(in oklab, var(--ink) 5%, transparent); font-size: 13.5px; }
.pre li.met::before { content: "✓ "; color: var(--g5); font-weight: 700; }
.pre li.miss { background: color-mix(in oklab, var(--g7) 16%, transparent); }
.pre li.miss::before { content: "! "; color: var(--g7); font-weight: 700; }
.pre small { color: var(--muted); }
.flag { margin: 14px 0 0; padding: 9px 12px; border-radius: 10px; font-size: 13px; font-weight: 600; color: var(--hot); background: color-mix(in oklab, var(--hot) 11%, transparent); }
.opts { max-height: 260px; overflow: auto; }
.note { margin: 18px 0 0; font-size: 12.5px; color: var(--muted); }
.x { all: unset; position: absolute; top: 16px; right: 16px; width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px; font-size: 22px; cursor: pointer; color: var(--muted); }
.x:hover, .x:focus-visible { background: color-mix(in oklab, var(--ink) 8%, transparent); color: var(--ink); }

#toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 20; max-width: calc(100vw - 32px); padding: 12px 18px; border-radius: 14px;
  background: var(--ink); color: var(--bg); font-size: 14px; box-shadow: var(--shadow);
  transform: translate(-50%, 140%); opacity: 0; transition: transform .4s var(--ease), opacity .4s; pointer-events: none;
}
#toast.on { transform: translate(-50%, 0); opacity: 1; }

/* ---------- small screens ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .summary { grid-template-columns: auto 1fr; }
  .legend { grid-column: 1 / -1; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
  .stats { grid-template-columns: repeat(2, auto); }
}
@media (max-width: 560px) {
  .summary { grid-template-columns: 1fr; gap: 16px; }
  .ring { display: none; }
  .range span { display: none; }
  .tools .btn { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}