/* 三界共語 · minimal — design tokens follow the 《單向讀取》 response page */
/* CJK fonts are self-hosted subsets (SIL OFL 1.1, see assets/fonts/LICENSE.txt); JetBrains Mono comes from Google Fonts. */
@font-face { font-family: 'Noto Sans TC'; src: url(../fonts/noto-sans-tc-sub.woff2) format('woff2'); font-weight: 300 500; font-style: normal; font-display: swap; }
@font-face { font-family: 'Noto Serif TC'; src: url(../fonts/noto-serif-tc-sub.woff2) format('woff2'); font-weight: 400 600; font-style: normal; font-display: swap; }
:root {
  --bg: #090909;
  --panel: #0d0d10;
  --line: #1e1e25;
  --line-soft: #16161a;
  --line-strong: #2c2c35;
  --ink: #d8d5d0;
  --ink-dim: #8a8781;
  --ink-faint: #7d7a74;      /* text-safe faint (AA 4.6:1 on --bg) */
  --ink-ghost: #55534e;      /* decorative only: ticks, rules, dots */
  --green: #c8ff40;
  --green-2: #8db82e;
  --green-3: #567226;
  --blue: #7eb8ff;
  --amber: #ff8c00;
  --accent: var(--green);
  --mono: 'JetBrains Mono', 'Consolas', 'Courier New', monospace;
  --sans: 'Noto Sans TC', 'Microsoft JhengHei', 'PingFang TC', sans-serif;
  --serif: 'Noto Serif TC', 'PMingLiU', 'Songti TC', serif;
  --gutter: 16px;
  --nav-h: 44px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { background: var(--bg); -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--nav-h) + 16px); }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-weight: 300; line-height: 1.9;
  margin: 0; padding: 0 var(--gutter) 64px;
  font-size: 15px; overflow-x: hidden;
  text-rendering: optimizeLegibility;
}
img, video, svg { max-width: 100%; }
a { color: inherit; text-decoration-color: var(--ink-ghost); text-underline-offset: 3px; }
a:hover { text-decoration-color: currentColor; }
b, strong { font-weight: 500; color: var(--ink); }
button { font: inherit; color: inherit; }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 3px; }
.wrap { max-width: 760px; margin: 0 auto; }
.mono { font-family: var(--mono); }
.en { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--ink-faint); font-weight: 400; }
.dim { color: var(--ink-faint); }
.c-green { color: var(--green); } .c-blue { color: var(--blue); } .c-amber { color: var(--amber); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

.skip { position: absolute; left: 12px; top: -60px; z-index: 50; background: var(--panel); border: 1px solid var(--line); padding: 6px 12px; font-family: var(--mono); font-size: 12px; text-decoration: none; }
.skip:focus { top: 8px; }

/* ---------- top nav ---------- */
.topnav {
  position: sticky; top: 0; z-index: 20;
  margin: 0 calc(-1 * var(--gutter)); padding: 0 var(--gutter);
  background: rgba(9, 9, 9, .9);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.topnav .wrap { display: flex; align-items: center; gap: 16px; height: var(--nav-h); }
.topnav .mark { font-family: var(--serif); font-weight: 600; font-size: 14px; letter-spacing: .12em; text-decoration: none; white-space: nowrap; display: none; }
.topnav ul { list-style: none; margin: 0; padding: 0; display: flex; flex: 1; justify-content: space-between; gap: 4px; }
.topnav a.nl { display: block; font-size: 12.5px; font-weight: 400; letter-spacing: .08em; color: var(--ink-dim); text-decoration: none; padding: 6px 2px; position: relative; white-space: nowrap; }
.topnav a.nl:hover { color: var(--ink); }
.topnav a.nl[aria-current="true"] { color: var(--ink); }
.topnav a.nl[aria-current="true"]::after { content: ''; position: absolute; left: 2px; right: 2px; bottom: 2px; height: 1px; background: var(--nav-accent, var(--green)); }
@media (min-width: 640px) {
  .topnav .mark { display: block; }
  .topnav ul { justify-content: flex-end; gap: 18px; }
}

/* ---------- hero ---------- */
header.hero { padding: 56px 0 40px; border-bottom: 1px solid var(--line); }
@media (min-width: 640px) { header.hero { padding-top: 84px; } }
.eyebrow { font-family: var(--mono); font-size: 11px; letter-spacing: .22em; color: var(--blue); text-transform: uppercase; margin-bottom: 28px; line-height: 2; }
.eyebrow .dim { color: var(--ink-faint); }
h1 { font-family: var(--serif); font-weight: 600; font-size: clamp(40px, 9vw, 60px); line-height: 1.2; margin: 0 0 6px; letter-spacing: .06em; }
.subtitle { font-family: var(--mono); font-size: 14px; color: var(--green); letter-spacing: .14em; margin: 0 0 34px; }
.lead { font-family: var(--serif); font-size: clamp(19px, 3.6vw, 23px); line-height: 1.8; margin: 0 0 6px; letter-spacing: .02em; }
.lead-en { font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint); letter-spacing: .06em; line-height: 1.8; margin: 0 0 6px; }
.lead-src { font-size: 12px; color: var(--ink-faint); margin: 0 0 36px; letter-spacing: .04em; }
.lead-src span { font-family: var(--mono); font-size: 10px; letter-spacing: .12em; margin-left: 6px; }
.meta { display: flex; flex-wrap: wrap; gap: 10px; font-family: var(--mono); font-size: 11px; color: var(--ink-dim); margin: 0; padding: 0; list-style: none; }
.meta li, .meta span { border: 1px solid var(--line); border-radius: 2px; padding: 3px 9px; letter-spacing: .06em; line-height: 1.7; }
.meta b { color: var(--ink); font-weight: 400; }
.hero-fig { margin: 30px 0 30px; }

/* ---------- sections ---------- */
main > section, main > div > section { margin-top: 88px; }
main > section:first-child { margin-top: 64px; }
.sec { --accent: var(--green); }
.sec.ai { --accent: var(--blue); }
.sec.human { --accent: var(--amber); }
.sec.neutral { --accent: var(--ink-dim); }
.sec-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 22px; font-weight: 400;
  display: flex; align-items: center; gap: 12px; line-height: 1.6;
}
.sec-label::after { content: ''; flex: 1; height: 1px; background: var(--line); }
h2 { font-family: var(--serif); font-weight: 600; font-size: clamp(26px, 5.4vw, 34px); line-height: 1.35; letter-spacing: .05em; margin: 0 0 4px; }
.h2-en { font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint); letter-spacing: .12em; margin: 0 0 30px; }
h3 { font-family: var(--sans); font-weight: 500; font-size: 17px; letter-spacing: .05em; margin: 0 0 4px; line-height: 1.6; }
h3 .en { margin-left: 10px; }
.sub { margin-top: 64px; }
.sub-head { margin-bottom: 20px; }
.sub-head .date { font-family: var(--mono); font-size: 11px; color: var(--accent); letter-spacing: .1em; display: block; margin-bottom: 4px; }
.mini-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-faint); margin: 40px 0 14px; display: flex; align-items: center; gap: 10px; font-weight: 400; }
.mini-label::after { content: ''; flex: 1; height: 1px; background: var(--line-soft); }

.statement { font-family: var(--serif); font-size: 17px; line-height: 2.1; color: var(--ink); max-width: 40em; }
.statement p { margin: 0 0 1.3em; }
.statement .hl { color: var(--accent); }
.statement-sig { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); letter-spacing: .15em; margin-top: 22px; }
.concept, .body { font-size: 15px; color: var(--ink-dim); max-width: 42em; }
.concept p, .body p { margin: 0 0 1em; }
.concept b, .body b { color: var(--ink); }
.body-en { font-family: var(--mono); font-size: 11.5px; line-height: 1.85; color: var(--ink-faint); letter-spacing: .03em; max-width: 52em; margin: 0 0 1em; }
.note { font-size: 13px; color: var(--ink-faint); max-width: 44em; }
.key { color: var(--accent); }

/* rows: the .mv grid from the reference page */
.mv { display: grid; grid-template-columns: 1fr; gap: 2px 24px; padding: 20px 0; border-top: 1px solid var(--line-soft); }
.mv:last-child { border-bottom: 1px solid var(--line-soft); }
@media (min-width: 640px) { .mv { grid-template-columns: 118px 1fr; } }
.mv-time { font-family: var(--mono); font-size: 12px; color: var(--accent); letter-spacing: .04em; line-height: 2.1; }
.mv-time .len { display: inline-block; margin-left: 8px; font-size: 10.5px; color: var(--ink-faint); }
@media (min-width: 640px) { .mv-time .len { display: block; margin-left: 0; } }
.mv h3, .mv h4 { font-family: var(--sans); font-weight: 500; font-size: 15.5px; margin: 0 0 6px; letter-spacing: .05em; line-height: 1.7; }
.mv h3 .en, .mv h4 .en { margin-left: 8px; font-size: 10.5px; }
.mv p { margin: 0; font-size: 14px; color: var(--ink-dim); }
.mv p + p { margin-top: 8px; }

/* timeline bar */
.tl-bar { display: flex; height: 32px; border: 1px solid var(--line); border-radius: 2px; overflow: hidden; margin: 6px 0 8px; }
.tl-seg { display: flex; align-items: center; justify-content: center; font-family: var(--mono); font-size: 11px; color: var(--bg); border-right: 1px solid var(--bg); min-width: 0; white-space: nowrap; overflow: hidden; }
.tl-seg:last-child { border-right: none; }
.tl-ticks { display: flex; font-family: var(--mono); font-size: 10px; color: var(--ink-faint); margin-bottom: 28px; }
.tl-ticks span { text-align: right; padding-right: 4px; letter-spacing: .04em; min-width: 0; }

/* figures */
figure { margin: 0; }
figure img, figure video, .frame { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 3px; background: var(--panel); }
figcaption { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); margin-top: 10px; letter-spacing: .04em; line-height: 1.8; }
figcaption .zh { font-family: var(--sans); font-size: 12.5px; letter-spacing: .02em; color: var(--ink-dim); display: block; }
.fig-block { margin: 34px 0; }

/* stat tiles */
.stats { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); margin: 28px 0 8px; }
@media (min-width: 560px) { .stats { grid-template-columns: repeat(3, 1fr); } }
.stat { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 14px 14px 12px; }
.stat .num { font-family: var(--mono); font-size: 26px; font-weight: 400; color: var(--ink); line-height: 1.2; letter-spacing: -.01em; }
.stat .num small { font-size: 12px; color: var(--ink-dim); margin-left: 4px; letter-spacing: .04em; }
.stat .lbl { font-size: 12.5px; color: var(--ink-dim); line-height: 1.6; margin-top: 4px; }
.stat .lbl .en { display: block; font-size: 10.5px; letter-spacing: .14em; }

/* key/value table */
.kv { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.kv th, .kv td { text-align: left; vertical-align: top; padding: 11px 0; border-top: 1px solid var(--line-soft); }
.kv tr:last-child th, .kv tr:last-child td { border-bottom: 1px solid var(--line-soft); }
.kv th { font-family: var(--mono); font-weight: 400; font-size: 10.5px; letter-spacing: .14em; color: var(--ink-faint); width: 34%; padding-right: 16px; line-height: 2.1; text-transform: uppercase; }
.kv th .zh { display: block; font-family: var(--sans); font-size: 12.5px; letter-spacing: .04em; text-transform: none; color: var(--ink-dim); line-height: 1.5; }
.kv td { color: var(--ink-dim); }
@media (min-width: 640px) { .kv th { width: 200px; } }

/* two-column lists (dialog grid in the reference) */
.dialog-grid { display: grid; grid-template-columns: 1fr; gap: 28px; }
@media (min-width: 640px) { .dialog-grid { grid-template-columns: 1fr 1fr; } }
.dialog-col h4 { font-family: var(--mono); font-size: 11px; letter-spacing: .18em; margin: 0 0 12px; font-weight: 700; text-transform: uppercase; color: var(--ink-dim); }
.dialog-col.a h4 { color: var(--accent); }
.dialog-col.blue h4 { color: var(--blue); }
.dialog-col.amber h4 { color: var(--amber); }
.dialog-col ul, ul.dots { list-style: none; margin: 0; padding: 0; }
.dialog-col li, ul.dots li { font-size: 13.5px; color: var(--ink-dim); padding: 10px 0 10px 18px; border-top: 1px solid var(--line-soft); position: relative; }
.dialog-col li::before, ul.dots li::before { content: '·'; position: absolute; left: 3px; color: var(--accent); }
.dialog-col.blue li::before { color: var(--blue); }
.dialog-col.amber li::before { color: var(--amber); }
.dialog-col.plain li::before { color: var(--ink-faint); }
.dialog-col li b, ul.dots li b { color: var(--ink); font-weight: 500; }
.dialog-col li .en, ul.dots li .en { font-size: 10px; margin-left: 6px; }

/* code / example */
code.cmd { display: block; font-family: var(--mono); font-size: 12px; background: var(--panel); border: 1px solid var(--line); border-radius: 3px; padding: 12px 16px; color: var(--accent); white-space: pre-wrap; word-spacing: .2em; line-height: 1.9; }

/* chips used as filters */
.filters { display: flex; flex-direction: column; gap: 10px; margin: 18px 0 16px; }
.fgroup { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.fgroup .flabel { font-family: var(--mono); font-size: 10px; letter-spacing: .18em; color: var(--ink-faint); text-transform: uppercase; width: 64px; flex: none; }
.chip { font-family: var(--mono); font-size: 11.5px; letter-spacing: .04em; color: var(--ink-dim); background: transparent; border: 1px solid var(--line); border-radius: 2px; padding: 4px 10px; cursor: pointer; line-height: 1.5; min-height: 30px; }
.chip:hover { color: var(--ink); border-color: var(--line-strong); }
.chip[aria-pressed="true"] { color: var(--bg); background: var(--accent); border-color: var(--accent); }
.chip .n { opacity: .7; margin-left: 4px; }

/* dot calendar */
.chart { position: relative; margin: 8px 0 0; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart svg:focus { outline: none; }
.chart svg:focus-visible { outline: 1px solid var(--accent); outline-offset: 6px; }
.chart .axis text { font-family: var(--mono); font-size: 10px; fill: var(--ink-faint); }
.chart .phase text { font-family: var(--mono); font-size: 10px; fill: var(--ink-dim); letter-spacing: .08em; }
.chart .dot { transition: opacity .2s; }
.chart .dot.off { opacity: .12; }
/* the selected dot gets a separate ring (.sel-ring) so the dot keeps its own shape */
.tip { position: absolute; z-index: 5; pointer-events: none; background: var(--panel); border: 1px solid var(--line-strong); border-radius: 3px; padding: 8px 10px; font-size: 12px; line-height: 1.7; color: var(--ink-dim); max-width: 260px; opacity: 0; transition: opacity .12s; }
.tip.on { opacity: 1; }
.tip b { color: var(--ink); font-weight: 500; }
.tip .mono { font-size: 10.5px; color: var(--ink-faint); }
.readout { min-height: 3.6em; font-size: 13px; color: var(--ink-dim); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); padding: 10px 0; margin-top: 14px; line-height: 1.75; }
.readout b { color: var(--ink); font-weight: 500; }
.readout .mono { font-size: 11px; color: var(--ink-faint); }

/* legend = classification */
.legend { list-style: none; margin: 18px 0 0; padding: 0; }
.legend li { display: grid; grid-template-columns: 18px 1fr auto; gap: 4px 12px; align-items: baseline; padding: 10px 0; border-top: 1px solid var(--line-soft); }
.legend li:last-child { border-bottom: 1px solid var(--line-soft); }
.legend .sw { width: 10px; height: 10px; border-radius: 50%; display: inline-block; transform: translateY(1px); }
.legend .name { font-size: 13.5px; color: var(--ink); font-weight: 400; }
.legend .name .en { margin-left: 6px; font-size: 10px; }
.legend .desc { grid-column: 2 / 4; font-size: 12.5px; color: var(--ink-dim); line-height: 1.7; }
.legend .cnt { font-family: var(--mono); font-size: 13px; color: var(--ink); text-align: right; }
.legend .cnt .of { color: var(--ink-faint); font-size: 10.5px; }

/* data tables */
.tbl-wrap { overflow: auto; max-height: 460px; border: 1px solid var(--line); border-radius: 3px; background: var(--panel); }
table.data { border-collapse: collapse; width: 100%; font-size: 12.5px; min-width: 760px; }
table.data th, table.data td { padding: 7px 10px; border-bottom: 1px solid var(--line-soft); text-align: left; vertical-align: top; color: var(--ink-dim); }
table.data thead th { position: sticky; top: 0; background: var(--panel); z-index: 1; border-bottom: 1px solid var(--line); font-weight: 400; padding: 0; }
table.data thead th button { all: unset; box-sizing: border-box; display: block; width: 100%; padding: 8px 10px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; color: var(--ink-faint); cursor: pointer; white-space: nowrap; }
table.data thead th button:focus-visible { outline: 1px solid var(--accent); outline-offset: -2px; }
table.data thead th button:hover { color: var(--ink); }
table.data thead th[aria-sort] button { color: var(--accent); }
table.data thead th[aria-sort="ascending"] button::after { content: ' ↑'; }
table.data thead th[aria-sort="descending"] button::after { content: ' ↓'; }
table.data td.num, table.data td.mono { font-family: var(--mono); font-size: 11.5px; white-space: nowrap; }
table.data td.note { min-width: 220px; color: var(--ink-faint); }
table.data tr.off { display: none; }
table.simple { min-width: 520px; }
table.simple th, table.simple td { white-space: nowrap; }
table.simple .ph-en { display: block; font-size: 10px; }
table.simple td, table.simple th { padding: 9px 10px; }
table.simple thead th { position: static; padding: 8px 10px; font-family: var(--mono); font-size: 10px; letter-spacing: .1em; color: var(--ink-faint); }
table.simple td.num { text-align: right; color: var(--ink); }
table.simple th.num { text-align: right; }

details.more { margin-top: 18px; }
details.more > summary { cursor: pointer; list-style: none; font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--ink-dim); padding: 8px 0; display: inline-flex; gap: 8px; align-items: center; text-transform: uppercase; }
details.more > summary::-webkit-details-marker { display: none; }
details.more > summary::before { content: '+'; color: var(--accent); width: 10px; display: inline-block; }
details.more[open] > summary::before { content: '–'; }
details.more > summary:hover { color: var(--ink); }
details.more > summary .zh { font-family: var(--sans); font-size: 13px; letter-spacing: .04em; text-transform: none; }
details.more > .inner { padding-top: 12px; }

/* sparklines small multiples */
/* cells carry their own right/bottom border, so an incomplete last row leaves no grey block */
.spark-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 1px solid var(--line-soft); border-left: 1px solid var(--line-soft); margin-top: 16px; }
@media (min-width: 480px) { .spark-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 700px) { .spark-grid { grid-template-columns: repeat(4, 1fr); } }
.spark { background: var(--bg); padding: 8px 8px 6px; margin: 0; transition: opacity .2s; border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); min-width: 0; }
#sparks-details { margin-top: 10px; }
#sparks-details .spark-grid { margin-top: 4px; }
.spark.off { opacity: .15; }
.spark svg { display: block; width: 100%; height: auto; }
.spark .sp-h { display: flex; justify-content: space-between; gap: 6px; font-family: var(--mono); font-size: 10px; color: var(--ink-faint); line-height: 1.5; letter-spacing: .02em; }
.spark .sp-h b { color: var(--ink-dim); font-weight: 400; }
.spark .sp-f { font-size: 11px; color: var(--ink-dim); line-height: 1.5; margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.spark .sp-f .mono { font-size: 10px; color: var(--ink-faint); }
.spark-key { display: flex; flex-wrap: wrap; gap: 6px 18px; font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); margin-top: 12px; }
.spark-key i { display: inline-block; width: 18px; height: 0; border-top: 1.5px solid var(--accent); vertical-align: middle; margin-right: 6px; }
.spark-key i.dash { border-top-style: dashed; }
.spark-key i.band { height: 3px; border: none; background: #55534e; }

/* micro scrubber */
.scrub { margin: 28px 0; max-width: 480px; }
.scrub-frame { position: relative; }
.scrub-frame img { aspect-ratio: 3 / 2; object-fit: cover; }
.scrub-t { position: absolute; left: 10px; top: 8px; font-family: var(--mono); font-size: 11px; color: var(--ink); background: rgba(9, 9, 9, .72); padding: 1px 7px; border-radius: 2px; letter-spacing: .06em; }
.scrub-ctl { display: flex; align-items: center; gap: 12px; margin-top: 10px; }
.scrub-ctl .mono { font-size: 10.5px; color: var(--ink-faint); white-space: nowrap; }
input[type="range"].rng { -webkit-appearance: none; appearance: none; flex: 1; height: 28px; background: transparent; margin: 0; cursor: pointer; }
input[type="range"].rng::-webkit-slider-runnable-track { height: 1px; background: var(--line-strong); }
input[type="range"].rng::-moz-range-track { height: 1px; background: var(--line-strong); }
input[type="range"].rng::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); margin-top: -6px; border: 0; }
input[type="range"].rng::-moz-range-thumb { width: 12px; height: 12px; border-radius: 50%; background: var(--accent); border: 0; }
.scrub-ticks { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 9.5px; color: var(--ink-faint); padding: 0 2px; }

/* gallery */
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 18px; }
@media (min-width: 640px) { .gallery { grid-template-columns: repeat(3, 1fr); } }
.gallery figure { min-width: 0; }
.gallery figcaption { font-family: var(--sans); font-size: 12px; color: var(--ink-dim); letter-spacing: .02em; margin-top: 8px; line-height: 1.6; }
.gallery .tag { font-family: var(--mono); font-size: 10px; color: var(--ink-faint); letter-spacing: .12em; display: block; text-transform: uppercase; }
.ratio-43 { aspect-ratio: 4 / 3; object-fit: cover; }
.ratio-sq { aspect-ratio: 1 / 1; object-fit: cover; }
/* 顯著 also differs by shape (a dark pinhole), not only by colour */
.sw-S { background: radial-gradient(circle, var(--bg) 0 27%, #c8ff40 31%); } .sw-V { background: #8db82e; } .sw-F { background: #567226; }
.sw-N, .sw-O, .sw-ring { border: 1.3px solid #8a8781; background: transparent; }
.sw-O, .sw-ring.dash { border-style: dotted; }
table.data .sw { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 2px; }

/* media buttons (poster + hover loop) */
.mbtn { all: unset; box-sizing: border-box; display: block; position: relative; width: 100%; cursor: pointer; border: 1px solid var(--line); border-radius: 3px; overflow: hidden; background: var(--panel); }
.mbtn:focus-visible { outline: 1px solid var(--accent); outline-offset: 3px; }
.mbtn img, .mbtn video { display: block; width: 100%; height: auto; border: 0; border-radius: 0; }
.mbtn video { position: absolute; inset: 0; height: 100%; object-fit: cover; opacity: 0; transition: opacity .25s; }
.mbtn.playing video, .mbtn.ready video { opacity: 1; }
.mbtn .badge { position: absolute; right: 8px; bottom: 8px; font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--ink); background: rgba(9, 9, 9, .74); border: 1px solid var(--line-strong); border-radius: 2px; padding: 1px 7px; line-height: 1.7; pointer-events: none; }
.mbtn.playing .badge { color: var(--accent); }
.mbtn .code { position: absolute; left: 8px; top: 8px; font-family: var(--mono); font-size: 11px; color: var(--bg); background: var(--accent); border-radius: 2px; padding: 0 6px; line-height: 1.7; pointer-events: none; }
.mbtn:hover { border-color: var(--line-strong); }

/* audio players */
.player { display: grid; grid-template-columns: 40px 1fr; gap: 0 14px; padding: 16px 0; border-top: 1px solid var(--line-soft); align-items: start; }
.players .player:last-child { border-bottom: 1px solid var(--line-soft); }
.pl-btn { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line-strong); background: transparent; cursor: pointer; display: grid; place-items: center; color: var(--accent); padding: 0; margin-top: 2px; }
.pl-btn:hover { border-color: var(--accent); }
.pl-btn svg { width: 14px; height: 14px; fill: currentColor; }
.pl-btn .i-pause { display: none; }
.player.is-playing .pl-btn .i-play { display: none; }
.player.is-playing .pl-btn .i-pause { display: block; }
.pl-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 10px; line-height: 1.6; }
.pl-title { font-size: 15px; font-weight: 500; letter-spacing: .05em; color: var(--ink); }
.pl-title .no { font-family: var(--mono); font-size: 11px; color: var(--accent); margin-right: 8px; font-weight: 400; }
.pl-head .en { font-size: 10px; }
.pl-time { margin-left: auto; font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); letter-spacing: .04em; white-space: nowrap; }
.pl-wave { position: relative; height: 40px; margin: 6px 0 4px; }
.pl-wave svg { display: block; width: 100%; height: 100%; }
.pl-wave .w-base { fill: var(--ink-ghost); }
.pl-wave .w-prog { fill: var(--accent); }
.pl-wave input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; margin: 0; cursor: pointer; }
.pl-wave:focus-within { outline: 1px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
.pl-meta { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); letter-spacing: .04em; line-height: 1.8; }
.pl-meta .zh { font-family: var(--sans); font-size: 12px; letter-spacing: .02em; color: var(--ink-dim); }

/* version list */
.vlist { margin-top: 10px; }
.ver { display: grid; grid-template-columns: 1fr; gap: 12px 22px; padding: 22px 0; border-top: 1px solid var(--line-soft); }
.ver:last-child { border-bottom: 1px solid var(--line-soft); }
@media (min-width: 640px) { .ver { grid-template-columns: 300px 1fr; } .ver.wide { grid-template-columns: 1fr; } }
.ver h3 { font-size: 16px; margin-bottom: 2px; }
.ver h3 .code { font-family: var(--mono); color: var(--accent); margin-right: 8px; font-weight: 400; }
.ver .vmeta { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); letter-spacing: .04em; margin-bottom: 8px; line-height: 1.8; }
.ver p { margin: 0; font-size: 14px; color: var(--ink-dim); }
.ver .vcap { font-size: 12px; color: var(--ink-faint); margin-top: 8px; line-height: 1.7; }

/* AIGC grid */
.style-group { margin-top: 36px; }
.style-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; margin-bottom: 4px; }
.style-head h3 { margin: 0; font-size: 15.5px; }
.style-head .cnt { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); }
.style-group > p { margin: 0 0 12px; font-size: 13.5px; color: var(--ink-dim); }
.tiles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
@media (min-width: 560px) { .tiles { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 720px) { .tiles { grid-template-columns: repeat(4, 1fr); } }
.tiles .mbtn img { aspect-ratio: 1248 / 704; object-fit: cover; }
.tiles .badge { font-size: 10px; }
.tiles-more { margin-top: 6px; }
.tiles-more > .inner { padding-top: 6px; }

.cw { border: 1px solid var(--line-strong); border-radius: 3px; padding: 18px 18px 16px; margin-top: 22px; background: var(--panel); }
.cw .cw-t { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--amber); margin: 0 0 8px; text-transform: uppercase; }
.cw p { margin: 0 0 14px; font-size: 13.5px; color: var(--ink-dim); }
.cw .btns { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em; color: var(--ink); background: transparent; border: 1px solid var(--line-strong); border-radius: 2px; padding: 7px 14px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; line-height: 1.5; min-height: 34px; }
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { border-color: var(--accent); color: var(--accent); }
.btn .zh { font-family: var(--sans); font-size: 13px; letter-spacing: .04em; }
.btn[hidden] { display: none; }
.uncanny-grid { margin-top: 18px; }
.uncanny-grid[hidden] { display: none; }

/* dialog */
dialog.lb { border: 1px solid var(--line-strong); border-radius: 3px; background: var(--bg); color: var(--ink); padding: 0; width: min(960px, calc(100vw - 24px)); max-height: calc(100vh - 24px); }
dialog.lb::backdrop { background: rgba(0, 0, 0, .82); }
.lb-media { background: #000; display: grid; place-items: center; }
.lb-media video, .lb-media img { display: block; width: 100%; height: auto; max-height: calc(100vh - 150px); object-fit: contain; border: 0; border-radius: 0; }
.lb-bar { display: flex; gap: 16px; align-items: flex-start; justify-content: space-between; padding: 12px 16px 14px; }
.lb-cap { font-size: 13px; color: var(--ink-dim); line-height: 1.7; }
.lb-cap .mono { display: block; font-size: 10.5px; color: var(--ink-faint); letter-spacing: .08em; }
.lb-close { flex: none; }

/* quotes */
blockquote.q { margin: 0; padding: 14px 0 14px 18px; border-left: 1px solid var(--accent); font-family: var(--serif); font-size: 17px; line-height: 1.9; color: var(--ink); }
blockquote.q footer { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); letter-spacing: .08em; margin-top: 6px; }
.quotes { display: grid; gap: 18px; margin: 18px 0; }

/* echoes */
.echo { list-style: none; margin: 0; padding: 0; }
.echo li { display: grid; grid-template-columns: 1fr; gap: 2px 16px; padding: 11px 0; border-top: 1px solid var(--line-soft); font-size: 13.5px; }
.echo li:last-child { border-bottom: 1px solid var(--line-soft); }
@media (min-width: 640px) { .echo li { grid-template-columns: 1fr 22px 1.3fr; } }
.echo .h { color: var(--ink); }
.echo .arrow { font-family: var(--mono); color: var(--ink-faint); display: none; }
@media (min-width: 640px) { .echo .arrow { display: block; } }
.echo .ai { color: var(--ink-dim); }
.echo .ai::before { content: 'AI → '; font-family: var(--mono); font-size: 10px; color: var(--blue); letter-spacing: .1em; }
@media (min-width: 640px) { .echo .ai::before { content: none; } }
.echo-head { display: none; font-family: var(--mono); font-size: 10px; letter-spacing: .18em; padding-bottom: 6px; }
@media (min-width: 640px) { .echo-head { display: grid; grid-template-columns: 1fr 22px 1.3fr; gap: 16px; } }

/* pipeline */
.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.steps li { display: grid; grid-template-columns: 34px 1fr; gap: 0 12px; padding: 14px 0; border-top: 1px solid var(--line-soft); }
.steps li:last-child { border-bottom: 1px solid var(--line-soft); }
.steps li::before { counter-increment: s; content: counter(s, decimal-leading-zero); font-family: var(--mono); font-size: 12px; color: var(--accent); line-height: 1.9; }
.steps b { display: block; font-size: 14.5px; letter-spacing: .04em; }
.steps b .en { margin-left: 8px; font-size: 10px; }
.steps span.t { font-size: 13.5px; color: var(--ink-dim); }

.principles { display: grid; grid-template-columns: 1fr; gap: 0 28px; }
@media (min-width: 640px) { .principles { grid-template-columns: 1fr 1fr; } }
.principles div { padding: 12px 0; border-top: 1px solid var(--line-soft); }
.principles b { display: block; font-size: 14px; letter-spacing: .04em; }
.principles b .en { margin-left: 8px; font-size: 10px; }
.principles p { margin: 2px 0 0; font-size: 13px; color: var(--ink-dim); }

dl.gloss { margin: 0; display: grid; grid-template-columns: 1fr; }
@media (min-width: 640px) { dl.gloss { grid-template-columns: 170px 1fr; } }
dl.gloss dt { padding: 10px 0 0; border-top: 1px solid var(--line-soft); font-size: 13.5px; color: var(--ink); }
dl.gloss dt .en { display: block; font-size: 10px; letter-spacing: .08em; }
dl.gloss dd { margin: 0; padding: 0 0 10px; font-size: 13px; color: var(--ink-dim); }
@media (min-width: 640px) { dl.gloss dd { padding: 10px 0; border-top: 1px solid var(--line-soft); } }

/* downloads */
.files { border: 1px solid var(--line); border-radius: 3px; background: var(--panel); }
.file { display: grid; grid-template-columns: 1fr; gap: 6px 16px; padding: 16px 18px; border-top: 1px solid var(--line-soft); }
.file:first-child { border-top: 0; }
@media (min-width: 640px) { .file { grid-template-columns: 1fr auto; align-items: center; } }
.file .fn { font-size: 14px; color: var(--ink); }
.file .fn .en { margin-left: 8px; font-size: 10px; }
.file .fd { font-size: 12.5px; color: var(--ink-dim); line-height: 1.7; }
.file .fd .mono { font-size: 10.5px; color: var(--ink-faint); }
.file .dl { display: flex; flex-wrap: wrap; gap: 8px; }

/* credits */
.roles { width: 100%; border-collapse: collapse; }
.roles th, .roles td { text-align: left; vertical-align: top; padding: 12px 0; border-top: 1px solid var(--line-soft); font-weight: 400; }
.roles tr:last-child th, .roles tr:last-child td { border-bottom: 1px solid var(--line-soft); }
.roles th { font-family: var(--mono); font-size: 10px; letter-spacing: .16em; color: var(--ink-faint); width: 40%; padding-right: 14px; line-height: 1.9; }
.roles th .zh { display: block; font-family: var(--sans); font-size: 13.5px; letter-spacing: .04em; color: var(--ink); }
.roles td { font-size: 13px; color: var(--ink-dim); }
.roles td b { display: block; color: var(--ink); font-size: 13.5px; }

.versions2 { display: grid; grid-template-columns: 1fr; gap: 12px; margin: 18px 0 26px; }
@media (min-width: 640px) { .versions2 { grid-template-columns: 1fr 1fr; } }
.vcard { border: 1px solid var(--line); border-radius: 3px; padding: 16px 18px; display: block; text-decoration: none; }
a.vcard:hover { border-color: var(--line-strong); }
.vcard .t { font-family: var(--mono); font-size: 11px; letter-spacing: .18em; color: var(--accent); }
.vcard .t .here { color: var(--ink-faint); margin-left: 8px; letter-spacing: .1em; }
.vcard .zh { display: block; font-size: 15px; color: var(--ink); margin: 4px 0 4px; }
.vcard p { margin: 0; font-size: 13px; color: var(--ink-dim); }

/* footer */
.site-foot { margin-top: 110px; border-top: 1px solid var(--line); padding-top: 26px; font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); letter-spacing: .1em; line-height: 2; }
.site-foot .outro { font-family: var(--serif); font-size: 16px; color: var(--ink); letter-spacing: .04em; margin: 0 0 4px; line-height: 1.8; }
.site-foot p { margin: 0 0 14px; }
.site-foot .row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }
.site-foot .row a { display: inline-block; padding: 6px 0; min-height: 24px; }

noscript .ns { display: block; font-size: 13px; color: var(--ink-dim); border: 1px solid var(--line); padding: 10px 14px; margin-top: 18px; }

/* mobile: phase table fits 343px */
@media (max-width: 479px) {
  table.simple { min-width: 0; }
  table.simple th, table.simple td { padding: 8px 3px; }
  table.simple tbody th { font-size: 12px; }
  table.simple td.num { font-size: 11px; }
  table.simple thead th { font-size: 9.5px; padding: 8px 3px; }
  table.simple th:first-child, table.simple td:first-child { padding-left: 8px; }
  table.simple .ph-en { display: none; }
  table.simple thead th { letter-spacing: 0; }
  table.simple thead th:first-child { padding-left: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}
@media (forced-colors: active) {
  .chip[aria-pressed="true"] { forced-color-adjust: none; }
}
@media print {
  .topnav, .filters, .player, .mbtn video { display: none !important; }
  body { background: #fff; color: #000; }
}