/* EMD × 睡眠 — site styles. Tokens first, then layout, then components. */
:root {
  color-scheme: light;
  --bg: #f6f6f3; --surface: #fcfcfb; --surface-2: #f0efec;
  --ink: #0b0b0b; --ink-2: #52514e; --muted: #898781; --grid: #e1e0d9; --axis: #c3c2b7; --border: rgba(11,11,11,0.10);
  --accent: #2a78d6; --accent-ink: #ffffff;
  --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a; --s4: #eda100; --s5: #e87ba4; --s6: #008300; --s7: #4a3aa7; --s8: #e34948;
  --good: #0ca30c; --warn: #fab219;
  --radius: 12px; --shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px -12px rgba(0,0,0,.12);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0d0d0d; --surface: #1a1a19; --surface-2: #232322;
    --ink: #ffffff; --ink-2: #c3c2b7; --muted: #898781; --grid: #2c2c2a; --axis: #383835; --border: rgba(255,255,255,0.10);
    --accent: #3987e5; --accent-ink: #0b0b0b;
    --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500; --s5: #d55181; --s6: #008300; --s7: #9085e9; --s8: #e66767;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d0d0d; --surface: #1a1a19; --surface-2: #232322;
  --ink: #ffffff; --ink-2: #c3c2b7; --muted: #898781; --grid: #2c2c2a; --axis: #383835; --border: rgba(255,255,255,0.10);
  --accent: #3987e5; --accent-ink: #0b0b0b;
  --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500; --s5: #d55181; --s6: #008300; --s7: #9085e9; --s8: #e66767;
  --shadow: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.7 system-ui, -apple-system, "Segoe UI", "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; } a:hover { text-decoration: underline; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.7rem, 4.5vw, 2.6rem); } h2 { font-size: clamp(1.35rem, 3vw, 1.8rem); } h3 { font-size: 1.1rem; } h4 { font-size: 1rem; }
p { margin: 0 0 1em; } ul, ol { padding-left: 1.4em; } li { margin: .25em 0; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--border); }
.site-header .wrap { display: flex; align-items: center; gap: 12px; height: 56px; }
.brand { font-weight: 700; white-space: nowrap; color: var(--ink); }
.brand small { color: var(--muted); font-weight: 500; margin-left: 6px; }
nav.top { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; flex: 1; }
nav.top::-webkit-scrollbar { display: none; }
nav.top a { color: var(--ink-2); padding: 6px 9px; border-radius: 8px; white-space: nowrap; font-size: .9rem; }
nav.top a:hover { background: var(--surface-2); text-decoration: none; }
.icon-btn { border: 1px solid var(--border); background: var(--surface); color: var(--ink); border-radius: 8px; padding: 6px 10px; cursor: pointer; font: inherit; font-size: .9rem; }
.icon-btn:hover { background: var(--surface-2); }

/* hero */
.hero { position: relative; padding: 64px 0 36px; overflow: hidden; }
.hero-wave { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .55; pointer-events: none; }
.hero-inner { position: relative; }
.eyebrow { font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; }
.brand-big { display: block; font-size: clamp(2.6rem, 8vw, 4.6rem); font-weight: 800; letter-spacing: .02em; line-height: 1.05; }
.brand-big em { font-style: normal; color: var(--s3); }
h1 .sub { display: block; font-size: clamp(1.1rem, 2.6vw, 1.5rem); font-weight: 600; color: var(--ink-2); margin-top: 10px; }
.brand .leaf { width: 20px; height: 20px; vertical-align: -4px; margin-right: 6px; }
.note { font-size: .8rem; color: var(--muted); line-height: 1.55; margin: 4px 0 10px; }
details.how, details.more { margin: 4px 0 12px; }
details.how > summary, details.more > summary { cursor: pointer; font-size: .82rem; color: var(--muted); list-style: none; display: inline-block; padding: 2px 8px; border: 1px solid var(--border); border-radius: 999px; }
details.how > summary::-webkit-details-marker, details.more > summary::-webkit-details-marker { display: none; }
details.how > summary::before, details.more > summary::before { content: '▸ '; }
details[open].how > summary::before, details[open].more > summary::before { content: '▾ '; }
details.how > summary:hover, details.more > summary:hover { color: var(--ink); border-color: var(--muted); }
details.how > p { font-size: .82rem; color: var(--ink-2); margin: 8px 0 0; line-height: 1.6; }
details.more > *:not(summary) { margin-top: 10px; }
details.more { margin: 8px 0 16px; }
.prose details.more > summary { font-size: .88rem; color: var(--accent); border-color: transparent; padding-left: 0; }
.dek { color: var(--ink-2); max-width: 780px; margin: 6px 0 12px; }
.steps { list-style: none; padding: 0; margin: 18px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; counter-reset: step; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 26px 1fr; grid-template-rows: auto auto; column-gap: 10px; align-items: start; font-size: .92rem; }
.steps li::before { content: counter(step); grid-row: 1 / span 2; width: 26px; height: 26px; border-radius: 50%; background: var(--s3); color: #fff; font-weight: 700; font-size: .85rem; display: grid; place-items: center; }
.steps b { grid-column: 2; display: block; line-height: 1.5; }
.steps span { grid-column: 2; color: var(--ink-2); font-size: .88rem; line-height: 1.5; }
@media (max-width: 640px) { .steps { grid-template-columns: 1fr; } }
.facts-strip { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 12px; }
.facts-strip div { display: inline-flex; gap: 8px; align-items: baseline; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; font-size: .84rem; }
.facts-strip b { color: var(--accent); font-variant-numeric: tabular-nums; }
.facts-strip span { color: var(--ink-2); }
.huang-grid { align-items: start; }
.huang-facts { display: grid; gap: 6px; }
.huang-facts div { display: grid; grid-template-columns: 56px 1fr; gap: 10px; align-items: baseline; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; font-size: .9rem; }
.huang-facts b { color: var(--accent); font-variant-numeric: tabular-nums; }
.huang-facts span { color: var(--ink-2); }
.timeline { list-style: none; padding: 0; margin: 20px 0 8px; border-left: 2px solid var(--grid); }
.timeline li { display: grid; grid-template-columns: 64px 1fr; gap: 10px; padding: 8px 0 8px 14px; position: relative; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 16px; width: 12px; height: 12px; border-radius: 50%; background: var(--s3); border: 2px solid var(--bg); }
.timeline .yr { font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.timeline b { display: block; line-height: 1.35; }
.timeline .ve { display: block; font-size: .84rem; color: var(--muted); margin: 2px 0; }
.timeline .why { display: block; font-size: .92rem; color: var(--ink-2); }
@media (max-width: 640px) { .timeline li { grid-template-columns: 1fr; } .timeline .yr { margin-bottom: -4px; } }
.hero .lead { font-size: 1.08rem; color: var(--ink-2); max-width: 720px; margin-top: 18px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; list-style: none; }
.chips li { border: 1px solid var(--border); background: var(--surface); border-radius: 999px; padding: 3px 11px; font-size: .84rem; color: var(--ink-2); }
.chips li a { color: inherit; }
.howto { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 24px; }
.howto div { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.howto b { display: block; margin-bottom: 4px; }
.howto span { color: var(--ink-2); font-size: .95rem; }

/* sections */
section.block { padding: 52px 0 12px; border-top: 1px solid var(--border); }
section.block > .wrap > h2 { display: flex; align-items: baseline; gap: 10px; }
.num { color: var(--muted); font-weight: 500; font-size: .8em; }
.prose { max-width: 780px; }
.prose p, .prose li { color: var(--ink-2); }
.prose > p:first-child { font-size: 1.02rem; }
.prose strong { color: var(--ink); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; margin: 14px 0 22px; }
.card h3 { margin-top: 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 760px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }
.grid-2 > *, .grid-3 > *, .imf-row > *, .card { min-width: 0; }
.formula { background: var(--surface-2); border-radius: 8px; padding: 10px 14px; margin: 8px 0 14px; font-family: "Times New Roman", "Noto Serif TC", serif; font-size: 1.05rem; overflow-x: auto; }
.callout { border-left: 3px solid var(--accent); background: var(--surface-2); padding: 10px 14px; border-radius: 0 8px 8px 0; margin: 12px 0 16px; }
.callout.warn { border-color: var(--warn); }
.caption { color: var(--muted); font-size: .86rem; margin: 6px 0 4px; line-height: 1.55; }
.chart-title { font-size: .84rem; color: var(--muted); margin: 14px 0 4px; font-weight: 600; letter-spacing: .01em; }
.card > .chart-title:first-child { margin-top: 0; }
canvas.viz { display: block; width: 100%; border-radius: 8px; outline: none; }
canvas.viz:focus-visible { box-shadow: 0 0 0 2px var(--accent); }

/* controls */
.controls { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; margin: 4px 0 12px; }
.card .controls { background: var(--surface-2); border-radius: 10px; padding: 8px 12px; }
.controls .sep { width: 1px; height: 22px; background: var(--border); }
.controls details.adv { display: contents; }
.controls details.adv > summary { list-style: none; cursor: pointer; font-size: .86rem; color: var(--accent); padding: 4px 8px; border-radius: 6px; }
.controls details.adv > summary::-webkit-details-marker { display: none; }
.controls details.adv > summary::before { content: '⚙ '; }
.controls details.adv[open] > summary { color: var(--ink-2); }
.controls label { display: inline-flex; align-items: center; gap: 8px; font-size: .92rem; color: var(--ink-2); max-width: 100%; }
.controls input[type=range] { width: 140px; accent-color: var(--accent); }
.controls select, .controls input[type=number] { max-width: min(100%, 78vw); font: inherit; font-size: .92rem; color: var(--ink); background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 5px 8px; }
.controls .val { font-variant-numeric: tabular-nums; min-width: 3.2em; color: var(--ink); }
button.btn { font: inherit; font-size: .92rem; border-radius: 8px; padding: 7px 14px; border: 1px solid var(--border); background: var(--surface); color: var(--ink); cursor: pointer; }
button.btn:hover { background: var(--surface-2); }
button.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
button.btn.primary:hover { filter: brightness(1.08); }
button.btn[disabled] { opacity: .5; cursor: default; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button { font: inherit; font-size: .92rem; padding: 6px 12px; border: 0; background: var(--surface); color: var(--ink-2); cursor: pointer; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }
.seg .sw { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: -1px; }
progress { width: 160px; height: 8px; accent-color: var(--accent); }

/* status panel */
.status { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; margin: 10px 0; }
.status div { background: var(--surface-2); border-radius: 8px; padding: 8px 10px; }
.status dt { font-size: .78rem; color: var(--muted); }
.status dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }
.msg { min-height: 1.6em; color: var(--ink); background: var(--surface-2); border-radius: 8px; padding: 8px 12px; margin: 8px 0 12px; font-size: .95rem; }

/* IMF rows */
.imf-row { display: grid; grid-template-columns: 190px 1fr; gap: 8px; align-items: center; border-top: 1px solid var(--grid); padding: 4px 0; }
.imf-row:first-child { border-top: 0; }
.imf-row .lbl { font-size: .86rem; color: var(--ink-2); line-height: 1.35; }
.imf-row .lbl b { color: var(--ink); display: block; }
@media (max-width: 640px) { .imf-row { grid-template-columns: 1fr; } }
.band-tag { display: inline-block; font-size: .75rem; padding: 0 6px; border-radius: 999px; background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--border); }

/* bars */
.bars { display: grid; gap: 6px; }
.bar { display: grid; grid-template-columns: 110px 1fr 56px; gap: 8px; align-items: center; font-size: .9rem; }
.bar .track { height: 14px; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.bar .fill { height: 100%; background: var(--accent); border-radius: 0 4px 4px 0; }
.bar .v { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink-2); }

/* tables */
table.data { width: 100%; border-collapse: collapse; font-size: .9rem; margin: 8px 0; }
table.data th, table.data td { padding: 6px 8px; border-bottom: 1px solid var(--grid); text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.data td:first-child { white-space: normal; }
table.ladder th:last-child, table.ladder td:last-child { text-align: left; white-space: normal; }
table.data th:first-child, table.data td:first-child { text-align: left; }
table.data th { color: var(--muted); font-weight: 600; font-size: .82rem; }
details.tbl summary { cursor: pointer; color: var(--accent); font-size: .92rem; margin: 6px 0; }
.scroll-x { overflow-x: auto; }

/* papers */
.paper-filter { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 16px; }
.paper-filter button { font: inherit; font-size: .86rem; border-radius: 999px; padding: 4px 12px; border: 1px solid var(--border); background: var(--surface); color: var(--ink-2); cursor: pointer; }
.paper-filter button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.papers { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 12px; }
.paper { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; display: flex; flex-direction: column; gap: 4px; }
.paper[hidden] { display: none; }
.paper .yr { font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.paper .ti { font-weight: 600; line-height: 1.35; font-size: .95rem; }
.paper .au, .paper .ve { color: var(--muted); font-size: .86rem; }
.paper .why { color: var(--ink-2); font-size: .86rem; margin: 2px 0 0; line-height: 1.55; }
.paper .tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: auto; }
.paper .tags span { font-size: .74rem; padding: 1px 8px; border-radius: 999px; background: var(--surface-2); color: var(--ink-2); }

/* Q&A */
.qa details { border: 1px solid var(--border); border-radius: 10px; background: var(--surface); margin: 8px 0; padding: 0 14px; }
.qa summary { cursor: pointer; padding: 10px 0; font-weight: 600; list-style: none; }
.qa summary::-webkit-details-marker { display: none; }
.qa summary::before { content: "＋"; color: var(--accent); margin-right: 8px; }
.qa details[open] summary::before { content: "－"; }
.qa .a { padding: 0 0 12px; color: var(--ink-2); }
.qa .a p:last-child { margin-bottom: 0; }

/* tooltip (shared by charts.js) */
.viz-tip { position: fixed; z-index: 50; display: none; pointer-events: none; background: var(--surface); color: var(--ink); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 6px 24px -8px rgba(0,0,0,.35); padding: 6px 10px; font-size: .84rem; max-width: 280px; }
.viz-tip-row { display: flex; align-items: center; gap: 8px; line-height: 1.5; }
.viz-tip-row strong { font-variant-numeric: tabular-nums; }
.viz-tip-row span:last-child { color: var(--muted); }
.viz-tip-key { display: inline-block; width: 12px; height: 3px; border-radius: 2px; }

footer.site { border-top: 1px solid var(--border); margin-top: 40px; padding: 28px 0 48px; color: var(--muted); font-size: .9rem; }
footer.site p { margin: 0 0 .5em; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }