:root {
  --bg: #F6F5F1;
  --ink: #1B1B19;
  --ink-2: #6E6C66;
  --ink-3: #A9A69E;
  --rule: #E3E0D8;
  --pill: #EAE8E2;
  --pill-press: #DEDBD3;
  --accent: #C4462F;
  --shadow-tone: 1;
  --card: #FBFAF7; --rule-2: #ECEAE4; --ok: #3F6B4E; --warn: #A9741F;
  --cabinet: #EFE8DA; --cabinet-deep: #E6DCC8; --wood: #C4A882; --wood-dark: #A88968;
  --ease: cubic-bezier(.2, 0, 0, 1);
  --ease-io: cubic-bezier(.4, 0, .2, 1);
  --sans: "Instrument Sans", "Noto Sans SC", -apple-system, "PingFang SC", system-ui, sans-serif;
  --serif: "Instrument Serif", "Noto Serif SC", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: light;
}
[data-theme="dark"] {
  --bg: #131312;
  --ink: #EDEBE5;
  --ink-2: #8F8C85;
  --ink-3: #5B5954;
  --rule: #2A2927;
  --pill: #222220;
  --pill-press: #2E2D2A;
  --card: #191917; --rule-2: #22211F; --ok: #7FAE8C; --warn: #D2A35A;
  --cabinet: #1C1B18; --cabinet-deep: #22211C; --wood: #6B5A45; --wood-dark: #4A3E30;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scrollbar-gutter: stable; }
html.sheet-lock, html.lenis.lenis-stopped { overflow: hidden; }
html.vt *, html.vt *::before, html.vt *::after { transition: none !important; }
::view-transition-old(root), ::view-transition-new(root) { animation: none; mix-blend-mode: normal; }
::view-transition-new(root) { z-index: 2; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-weight: 500; font-size: 15px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "tnum" 0;
  transition: background-color .45s var(--ease-io), color .45s var(--ease-io);
}
::selection { background: var(--ink); color: var(--bg); }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
button { -webkit-tap-highlight-color: transparent; font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
i, em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: 0; }
.muted { color: var(--ink-2); transition: color .18s; }
a.muted:hover { color: var(--ink); }

/* ── custom cursor (fine pointers only) ── */
@media (pointer: fine) {
  html.has-cursor, html.has-cursor * { cursor: none !important; }
}
.cursor { position: fixed; left: 0; top: 0; z-index: 100; pointer-events: none; mix-blend-mode: normal; opacity: 0; transition: opacity .2s; }
html.has-cursor .cursor.on { opacity: 1; }
.cursor-dot {
  position: absolute; left: 0; top: 0; width: 7px; height: 7px; margin: -3.5px 0 0 -3.5px;
  border-radius: 999px; background: var(--ink);
  transition: width .32s var(--ease), height .32s var(--ease), margin .32s var(--ease), background-color .2s, border-radius .32s var(--ease);
}
.cursor-label {
  position: absolute; left: 14px; top: 10px; white-space: nowrap;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .04em; color: var(--ink-2);
  opacity: 0; transform: translateY(3px); transition: opacity .2s, transform .3s var(--ease);
}
.cursor.is-link .cursor-dot { width: 2px; height: 18px; margin: -9px 0 0 -1px; border-radius: 1px; }
.cursor.is-obj .cursor-dot { width: 34px; height: 34px; margin: -17px 0 0 -17px; background: transparent; box-shadow: inset 0 0 0 1px var(--ink); }
.cursor.is-obj .cursor-label, .cursor.is-drag .cursor-label { opacity: 1; transform: none; left: 24px; top: 14px; }
.cursor.is-drag .cursor-dot { width: 18px; height: 4px; margin: -2px 0 0 -9px; }
.cursor.is-down .cursor-dot { transform: scale(.82); }

/* ── top bar ── */
.top {
  position: fixed; inset: 0 0 auto 0; z-index: 20; display: flex; justify-content: space-between; align-items: baseline;
  padding: 22px 28px; font-size: 15px; pointer-events: none; background-color: transparent;
  transition: transform .5s var(--ease), opacity .4s var(--ease), background-color .3s var(--ease);
}
.top.is-solid { background-color: var(--bg); }
.top.is-hidden { transform: translate3d(0,-100%,0); opacity: 0; }
.top > * { pointer-events: auto; }
.wordmark { letter-spacing: .08em; }
.clock { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.clock-time { color: var(--ink); }

/* ── intro ── */
.intro { min-height: 100svh; display: flex; flex-direction: column; align-items: center; padding: 15vh 24px 12vh; }
.hero-object { width: min(560px, 92vw); display: block; perspective: 900px; }
.obj-tilt { display: block; transform-style: preserve-3d; will-change: transform; }
.obj-tilt svg { display: block; width: 100%; height: auto; overflow: visible; }
.hero-hint { margin: 2px 0 0; display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .06em; color: var(--ink-3); }
.hint-dot { width: 5px; height: 5px; border-radius: 9px; background: var(--accent); animation: breathe 2.6s var(--ease-io) infinite; }
@keyframes breathe { 50% { opacity: .25; } }
.bio {
  max-width: 600px; margin: 40px 0 0; text-align: center; text-wrap: balance;
  font-size: 24px; line-height: 1.55; letter-spacing: -0.012em;
}
.bio em { font-size: 1.12em; }
.bio .muted, .bio a { white-space: nowrap; }
.bio-en { max-width: 520px; margin: 18px 0 0; text-align: center; color: var(--ink-2); font-size: 15px; line-height: 1.6; text-wrap: balance; }
.index { margin-top: 64px; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.index-label, .eyebrow { color: var(--ink-3); font-size: 15px; }
.index-label i, .eyebrow i { color: var(--ink-3); font-size: 16px; margin-left: 4px; }
.index-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: 15px; }
.index-list a { display: inline-flex; gap: 10px; align-items: baseline; padding: 1px 0; transition: opacity .25s; }
.index-list a .n { font-family: var(--serif); font-style: italic; font-weight: 400; color: var(--ink-3); font-size: 15px; width: 22px; text-align: right; }
.index-list a .r { color: var(--ink-3); }
.index-list:hover a { opacity: .38; }
.index-list:hover a:hover { opacity: 1; }

/* ── color bridges (strip as bridge, not floating widget) ── */
.bridge { height: 7vh; pointer-events: none; }
.bridge-to-cabinet {
  background: linear-gradient(180deg, var(--bg) 0%, var(--cabinet) 100%);
}
.bridge-to-ledger {
  background: linear-gradient(180deg, var(--cabinet) 0%, var(--bg) 100%);
  margin-top: -1px;
}

/* ── cabinet / shelf ── */
.cabinet {
  padding: 4vh 0 6vh;
  background: var(--cabinet);
  position: relative;
}
.cabinet::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--wood) 55%, transparent), transparent);
  opacity: .7;
}
.cabinet-head, .sec-head { display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; padding: 0 24px; }
.cabinet-note, .sec-note { color: var(--ink-2); max-width: 460px; text-wrap: balance; }
.cabinet-case {
  margin-top: 5vh;
  position: relative;
}
.shelf {
  position: relative; margin-top: 0; padding: 36px 0 48px; overflow: hidden;
  outline: none; touch-action: pan-y; user-select: none; -webkit-user-select: none;
  background:
    linear-gradient(180deg, transparent 0%, color-mix(in srgb, var(--cabinet-deep) 55%, transparent) 72%, var(--cabinet-deep) 100%);
}
.shelf-rail {
  position: absolute; left: 0; right: 0; pointer-events: none; z-index: 2;
}
.shelf-rail-top {
  top: 10px; height: 10px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--wood) 35%, transparent), transparent),
    repeating-linear-gradient(90deg, transparent 0 48px, color-mix(in srgb, var(--wood-dark) 18%, transparent) 48px 49px);
  opacity: .55;
}
.shelf-rail-bot {
  bottom: 18px; height: 22px;
}
.shelf-rail-bot .rail-edge {
  display: block; height: 7px; margin: 0 4vw;
  border-radius: 2px;
  background:
    linear-gradient(180deg, var(--wood) 0%, var(--wood-dark) 100%);
  box-shadow:
    0 1px 0 color-mix(in srgb, #fff 35%, transparent),
    inset 0 1px 0 color-mix(in srgb, #fff 25%, transparent),
    inset 0 -1px 0 color-mix(in srgb, #000 18%, transparent);
}
.shelf-rail-bot .rail-shadow {
  display: block; height: 14px; margin: 0 3vw;
  background: radial-gradient(ellipse at 50% 0%, rgba(29,27,23,.22), transparent 70%);
}
.shelf-track { display: flex; width: max-content; will-change: transform; padding: 0 calc(50vw - var(--item) / 2); --item: 340px; position: relative; z-index: 1; }
.item { width: var(--item); flex: none; display: flex; flex-direction: column; align-items: center; text-align: center; transition: transform .35s var(--ease), opacity .35s; }
.item-no { font-family: var(--serif); font-style: italic; font-weight: 400; font-size: 18px; color: var(--ink-3); transition: color .35s; height: 24px; }
.item .obj { display: block; width: 252px; margin: 22px 0 10px; perspective: 700px; filter: drop-shadow(0 10px 14px rgba(29,27,23,.08)); }
.item.is-active .obj { filter: drop-shadow(0 14px 18px rgba(29,27,23,.14)); }
.item-title { font-size: 15.5px; line-height: 1.45; color: var(--ink); max-width: 290px; text-wrap: balance; transition: color .35s; }
.item-sub { font-size: 14px; color: var(--ink-3); line-height: 1.45; margin-top: 2px; transition: color .35s; }
.item-sub b { font-weight: 500; }
.item:not(.is-active) .item-title { color: var(--ink-2); }
.item.is-active .item-no { color: var(--ink); }
.item.is-active .item-sub { color: var(--ink-2); }
.shelf-line { height: 1px; background: var(--rule); margin: -1px 0 0; }

.scrub { display: flex; justify-content: center; margin-top: 3.5vh; padding-bottom: 1vh; }
.scrub-ticks {
  position: relative; height: 34px; width: min(560px, 84vw); touch-action: none;
  border-radius: 999px;
  background: color-mix(in srgb, var(--cabinet-deep) 70%, var(--wood) 30%);
  box-shadow:
    inset 0 1px 2px rgba(29,27,23,.18),
    inset 0 -1px 0 color-mix(in srgb, #fff 30%, transparent),
    0 1px 0 color-mix(in srgb, #fff 20%, transparent);
  padding: 0 6px;
}
.tick {
  position: absolute; bottom: 8px; width: 2px; margin-left: -1px; border-radius: 9px;
  background: var(--ink); opacity: .18; height: 9px; transform-origin: bottom;
  transition: opacity .25s, background-color .25s, height .2s var(--ease);
}
.tick.major { opacity: .42; height: 14px; width: 2.5px; margin-left: -1.25px; }
.tick.on { opacity: 1; background: var(--accent); }
.scrub-head {
  position: absolute; bottom: 6px; width: 3px; height: 26px; margin-left: -1.5px;
  border-radius: 9px; background: var(--accent); pointer-events: none;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent), 0 2px 6px rgba(196,70,47,.35);
}

/* ── ledger ── */
.ledger { padding: 8vh 28px 4vh; background: var(--bg); }
.ledger-list { list-style: none; max-width: 980px; margin: 6vh auto 0; padding: 0; }
.l-row { display: grid; grid-template-columns: 230px 1fr 76px; gap: 28px; align-items: end; padding: 16px 0 14px; border-top: 1px solid var(--rule); }
.l-row:last-child { border-bottom: 1px solid var(--rule); }
.l-name { display: flex; flex-direction: column; gap: 2px; font-size: 15px; }
.l-when { color: var(--ink-3); font-size: 13px; font-variant-numeric: tabular-nums; }
.l-v { font-family: var(--serif); font-size: 34px; line-height: .9; text-align: right; font-variant-numeric: lining-nums tabular-nums; letter-spacing: -.01em; }
.l-row .ruler { position: relative; height: 18px; margin-bottom: 4px; }
.l-row .ruler svg { display: block; width: 100%; height: 18px; overflow: visible; }
.ruler .r-tick { stroke: var(--ink-3); stroke-width: 1; opacity: .7; }
.ruler .r-tick.big { stroke: var(--ink-2); opacity: 1; }
.ruler .r-bar { stroke: var(--ink); stroke-width: 3; stroke-linecap: round; transform-origin: 0 0; transform: scaleX(0); transition: transform 1.6s var(--ease) .2s; }
.l-row.in .r-bar { transform: scaleX(var(--p)); }
.r-pin { position: absolute; left: 0; bottom: -4px; width: 7px; height: 7px; margin-left: -3.5px; border-radius: 9px; background: var(--ink); transition: left 1.6s var(--ease) .2s; }
.l-row.in .r-pin { left: calc(var(--p) * 100%); }
.l-row.own .r-pin { background: var(--accent); }
.l-row.own .l-name span:first-child::after { content: ""; display: inline-block; width: 5px; height: 5px; border-radius: 9px; background: var(--accent); margin-left: 8px; vertical-align: 2px; }
.ledger-foot { max-width: 980px; margin: 14px auto 0; display: flex; justify-content: space-between; color: var(--ink-3); font-family: var(--mono); font-size: 10.5px; letter-spacing: .05em; }
.ledger-foot b { font-weight: 500; color: var(--ink-2); }

/* ── experience ── */
.exp { padding: 11vh 28px 4vh; }
.exp-list { list-style: none; max-width: 980px; margin: 6vh auto 0; padding: 0; }
.exp-row { display: grid; grid-template-columns: 170px 1fr; gap: 28px; padding: 22px 0; border-top: 1px solid var(--rule); }
.exp-when { font-variant-numeric: tabular-nums; color: var(--ink-3); font-size: 14px; padding-top: 2px; }
.exp-title { font-size: 17px; }
.exp-place { color: var(--ink-2); font-size: 14px; margin-top: 2px; }
.exp-body { color: var(--ink-2); font-size: 14px; line-height: 1.75; margin: 10px 0 0; max-width: 620px; }
.exp-row:target .exp-title { color: var(--accent); }

/* ── end ── */
.end { padding: 12vh 24px 120px; text-align: center; display: flex; flex-direction: column; align-items: center; }
.end .eyebrow { margin-bottom: 18px; }
.end-line { font-size: 24px; letter-spacing: -0.012em; max-width: 560px; margin: 0 auto; text-wrap: balance; }
.end-links { margin-top: 22px; color: var(--ink-2); display: flex; justify-content: center; gap: 10px; }
.end-links a { transition: color .18s; }
.end-links a:hover { color: var(--ink); }
.end-links .todo { text-decoration: underline dotted var(--ink-3); text-underline-offset: 4px; }
.seal { display: block; width: 26px; height: 26px; margin: 9vh auto 0; }
.colophon { margin-top: 14px; color: var(--ink-3); font-size: 12.5px; }

/* ── pills ── */
.pills { position: fixed; z-index: 40; inset: auto 0 0 0; display: flex; justify-content: space-between; align-items: center; padding: 0 18px calc(18px + env(safe-area-inset-bottom)); pointer-events: none; }
.pill { pointer-events: auto; background: var(--pill); border-radius: 999px; padding: 6px 13px; font-size: 14px; line-height: 1.3; color: var(--ink); transition: background-color .2s, transform .25s var(--ease), opacity .3s; backdrop-filter: none; }
.pill:hover { background: var(--pill-press); }
.pill:active { transform: scale(.96); }
.pill kbd { font-family: var(--mono); font-size: 10px; color: var(--ink-3); margin-left: 4px; }
.pill-group { display: flex; gap: 3px; opacity: 0; transform: translateY(8px); pointer-events: none; transition: opacity .3s, transform .4s var(--ease); }
.pill-group .pill:first-child { border-radius: 999px 6px 6px 999px; }
.pill-group .pill:last-child { border-radius: 6px 999px 999px 6px; }
.pill-group .pill:not(:first-child):not(:last-child) { border-radius: 6px; }
body.sheet-open .pill-group { opacity: 1; transform: none; }
body.sheet-open .pill-group .pill { pointer-events: auto; }
body.sheet-open .pill-l { opacity: 0; pointer-events: none; }

/* ── detail sheet ── */
.sheet { position: fixed; inset: 0; z-index: 30; background: transparent; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); align-items: center; gap: 4vw; padding: 9vh 6vw 12vh; visibility: hidden; opacity: 0; overflow: auto; overscroll-behavior: contain; }
.sheet-bg { position: fixed; inset: 0; z-index: -1; background: var(--bg); opacity: 0; }
.sheet { isolation: isolate; }
.sheet-why { margin: 18px 0 0; max-width: 360px; text-align: center; font-family: var(--serif); font-style: italic; font-size: 17px; line-height: 1.5; color: var(--ink-2); text-wrap: balance; }
.sheet-stage { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.sheet-object { width: min(560px, 40vw); max-height: 62vh; perspective: 1000px; display: flex; justify-content: center; }
.sheet-object .obj { width: 100%; }
.sheet-object svg { max-height: 62vh; }
.sheet-plate { margin-top: 6px; display: flex; gap: 14px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .05em; color: var(--ink-3); }
.sheet-plate b { font-weight: 500; color: var(--ink-2); }
.sheet-object svg { width: 100%; display: block; overflow: visible; }
.sheet-text { max-width: 520px; }
.sheet-no { font-family: var(--serif); font-style: italic; font-weight: 400; font-size: 20px; color: var(--ink-3); margin: 0; }
.sheet-title { font-weight: 500; font-size: 32px; line-height: 1.25; letter-spacing: -0.015em; margin: 8px 0 0; text-wrap: balance; }
.sheet-role { color: var(--ink-2); margin: 6px 0 0; }
.sheet-summary { font-size: 17px; line-height: 1.7; margin: 26px 0 0; }
.sheet-tear { margin: 26px 0 0; display: grid; grid-template-columns: 52px 1fr; gap: 14px 18px; }
.sheet-tear dt { color: var(--ink-3); font-size: 14px; padding-top: 1px; }
.sheet-tear dd { margin: 0; color: var(--ink-2); font-size: 14px; line-height: 1.75; }
.sheet-fig { margin: 26px 0 0; max-width: 440px; }
.sheet-fig:empty { display: none; }
.sheet-stack { margin: 22px 0 0; font-family: var(--mono); font-size: 11px; letter-spacing: .03em; color: var(--ink-3); line-height: 1.9; }
.sheet [data-m] { will-change: transform, opacity, filter; }

/* ── supporting figures in the sheet (redrawn UI, from v4) ── */
.sheet-fig figure { margin: 0; }
.sheet-fig figcaption { margin-top: 10px; font-size: 12.5px; line-height: 1.6; color: var(--ink-3); }
.sheet-fig figcaption b { font-family: var(--mono); font-weight: 500; font-size: 10.5px; color: var(--ink-2); margin-right: 8px; letter-spacing: .04em; }
.sheet-fig code { font: 500 .86em/1 var(--mono); }
.tl,.recon,.perf,.auth,.log{background:var(--card);border-radius:12px;box-shadow:0 0 0 1px var(--rule),0 1px 2px rgba(20,18,10,.04),0 12px 32px -18px rgba(20,18,10,.18)}
[data-theme="dark"] .tl,[data-theme="dark"] .recon,[data-theme="dark"] .perf,[data-theme="dark"] .auth,[data-theme="dark"] .log{box-shadow:0 0 0 1px var(--rule)}
/* fig 1 timeline */
.tl{padding:22px 20px 16px;font-size:12px}
.tl-row{display:grid;grid-template-columns:44px 1fr 60px;gap:12px;align-items:center;height:34px}
.tl-k{color:var(--ink-2)}
.tl-v{font:500 11px var(--mono);color:var(--ink-3);text-align:right}
.tl-row:nth-child(2) .tl-v{color:var(--ok)}
.tl-track{position:relative;height:10px;border-radius:5px;background:var(--rule-2)}
.seg{position:absolute;top:0;bottom:0;left:calc(var(--a)*1%);width:calc((var(--b) - var(--a))*1%);border-radius:5px;transform-origin:left;transform:scaleX(0);transition:transform .8s var(--ease)}
.seg.ok{background:var(--ink)}
.seg.hang{background:repeating-linear-gradient(90deg,var(--warn) 0 4px,transparent 4px 8px);opacity:.75}
.seg.wait{background:var(--warn);opacity:.55}
.seg.cut{background:var(--warn);width:2px;top:-4px;bottom:-4px;border-radius:1px}
.fig.in .seg{transform:scaleX(1)}
.fig.in .tl-row:nth-child(1) .seg.hang{transition-duration:2.4s;transition-delay:.5s}
.fig.in .tl-row:nth-child(2) .seg.wait{transition-delay:.7s}.fig.in .tl-row:nth-child(2) .seg.cut{transition-delay:1.3s}.fig.in .tl-row:nth-child(2) .seg.ok:last-child{transition-delay:1.4s}
.fig.in .tl-row .seg.ok:first-child{transition-delay:.2s}
.tl-axis{display:grid;grid-template-columns:repeat(4,1fr);margin:10px 72px 0 56px;font-size:11px;color:var(--ink-3)}
.tl-axis span:last-child{text-align:right}

/* fig 2 reconcile */
.recon{display:grid;grid-template-columns:1fr 56px 1fr;row-gap:8px;padding:18px 18px 20px;font-size:12px;align-items:center}
.rc-h{font-size:11.5px;color:var(--ink-3);margin-bottom:2px}
.ev{display:flex;align-items:center;height:28px;padding:0 10px;border-radius:6px;box-shadow:inset 0 0 0 1px var(--rule);font:500 11.5px var(--mono);background:var(--card);min-width:0;white-space:nowrap;overflow:hidden}
.ev.gap{box-shadow:none;background:transparent}
.ev.dup{color:var(--ink-3);text-decoration:line-through;text-decoration-color:var(--accent)}
.ev.miss{box-shadow:inset 0 0 0 1px var(--rule-2);background:transparent;color:var(--ink-3);justify-content:center;font-family:var(--sans)}
.ev.add{box-shadow:inset 0 0 0 1px var(--ok);color:var(--ok)}
.ev.fin{background:var(--ink);color:var(--card);box-shadow:none;justify-content:center;font-family:var(--sans)}
.lk{position:relative;height:28px;display:grid;place-items:center;font:400 10.5px var(--sans);font-style:normal;color:var(--ink-3)}
.lk::before{content:"";position:absolute;left:6px;right:6px;top:50%;height:1px;background:var(--rule);transform-origin:left;transform:scaleX(0);transition:transform .7s var(--ease)}
.lk.x,.lk.add{background:var(--card)}
.lk.x::before,.lk.add::before{display:none}
.lk.x{color:var(--accent)}.lk.add{color:var(--ok)}
.fig.in .lk::before{transform:scaleX(1)}
.recon .r{opacity:0;transform:translateX(-6px);transition:opacity .5s var(--ease),transform .6s var(--ease)}
.fig.in .recon .r{opacity:1;transform:none}
.fig.in .recon .r:nth-of-type(n){transition-delay:calc(var(--i,0)*90ms + .35s)}
/* fig 3 perf */
.perf{padding:22px 20px 16px;font-size:12.5px}
.pf-row{display:grid;grid-template-columns:64px 1fr 64px;gap:14px;align-items:center;height:34px}
.pf-k{color:var(--ink-2)}
.pf-v{font:500 12px var(--mono);text-align:right}
.pf-bar{position:relative;height:10px}
.pf-bar i{position:absolute;left:0;top:0;bottom:0;width:var(--w);background:var(--ink);border-radius:2px;transform-origin:left;transform:scaleX(0);transition:transform 1.3s var(--ease) .2s}
.pf-bar i.hl{background:var(--accent);min-width:3px}
.pf-bar i.ghost{background:var(--rule)}
.fig.in .pf-bar i{transform:scaleX(1)}
.fig.in .pf-row:nth-child(2) .pf-bar i{transition-delay:.6s}.fig.in .pf-row:nth-child(4) .pf-bar i.hl{transition-delay:.9s}
.pf-sep{height:1px;background:var(--rule-2);margin:10px 0}
.pf-note{margin-top:12px;font:500 11px var(--mono);color:var(--ink-3)}

/* fig 4 auth */
.auth{width:100%;border-collapse:separate;border-spacing:0;font-size:12.5px;overflow:hidden}
.auth th{font-weight:500;font-size:11.5px;color:var(--ink-3);text-align:left;padding:12px 16px 10px;border-bottom:1px solid var(--rule-2)}
.auth td{padding:12px 16px;border-bottom:1px solid var(--rule-2)}
.auth tr:last-child td{border-bottom:0}
.auth td.bad{color:var(--ink-3);text-decoration:line-through;text-decoration-color:var(--accent)}
.auth td:last-child{color:var(--ink)}

/* fig 5 log */
.log{padding:16px 20px 18px;font:500 12px/1.95 var(--mono);color:var(--ink-2)}
.log span{display:block}
.lg-h{font-family:var(--sans);font-size:11.5px;color:var(--ink-3);margin-top:10px}
.lg-h:first-child{margin-top:0}
.log .dim{color:var(--ink-3)}
.log .ok{color:var(--ok)}

.rule{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;padding:10px 14px;border-radius:8px;background:var(--card);box-shadow:inset 0 0 0 1px var(--rule);font:500 12px var(--mono);color:var(--ink-2);width:fit-content;max-width:100%}
.rule b{color:var(--ink);font-weight:500}
.rule .ok{color:var(--ok)}
.rule code{margin-left:4px;padding:2px 6px;border-radius:4px;background:var(--ink);color:var(--card);font-size:10.5px}

/* ── reveal ── */
[data-reveal] { opacity: 0; filter: blur(4px); transform: translateY(10px); transition: opacity .9s var(--ease), filter .9s var(--ease), transform 1.1s var(--ease); }
[data-reveal].in { opacity: 1; filter: none; transform: none; }

/* ── object micro-motion ── */
.obj .pad-top { transition: fill .09s; }
.obj .pad.lit .pad-top { fill: #E3A33B; }
.obj .pad.lit.accent .pad-top { fill: #F0C46A; }
.hero-led { transition: opacity .08s; }
.ptt { transition: transform .12s var(--ease); }
.obj.hot .ptt { transform: translateY(1px); }
.obj .draw { transition: transform .9s var(--ease); }
.obj.hot .draw { transform: translateX(-12px); }
.obj .glint { transition: opacity .5s; opacity: .35; }
.obj.hot .glint { opacity: 1; }
.obj .beam { transition: opacity .6s var(--ease); }
.obj.hot .beam { opacity: 1; }
.obj .tag { transition: transform 1.4s cubic-bezier(.3, 1.6, .4, 1); transform-box: view-box; }
.obj.hot .tag { transform: rotate(9deg); }
.obj .stamp { transform-box: view-box; transition: opacity .12s, transform .28s cubic-bezier(.5, 0, .7, 1.6); transform: scale(1.7) rotate(-20deg); }
.obj.hot .stamp { opacity: .9; transform: scale(1) rotate(-8deg); transition-delay: .18s; }
.obj .drop { transform-box: view-box; }
.obj .gled { transition: fill .12s; }
.obj .gled.on { fill: #E3A33B; }

.obj .b .lever { transition: transform .3s cubic-bezier(.5,0,.3,1.4); transform-box: fill-box; }
.obj .b .flag { transition: fill .2s; }
.obj.hot .trip .lever { transform: translateY(10px); transition-delay: .25s; }
.obj.hot .trip .flag { fill: #C4462F; transition-delay: .3s; }
.obj .slip { transition: transform 1.1s var(--ease); }
.obj .slip-wrap { transition: transform 1.1s var(--ease); }
.obj.hot .slip-wrap { transform: translateY(6px); }
.obj .glow { transition: opacity .4s; }
.obj.hot .glow { animation: alarm 1.1s steps(1) 2; }
@keyframes alarm { 50% { opacity: 0; } }
.obj .press { transition: transform .35s cubic-bezier(.5,0,.7,1.4); }
.obj.hot .press { transform: translate(-6px, -6px); }
.obj .rd-led { transition: fill .2s; }
.obj.hot .rd-led { animation: alarm .5s steps(1) 2; }

/* ── responsive ── */
@media (max-width: 980px) {
  .sheet { grid-template-columns: 1fr; align-items: start; padding: 12vh 24px 120px; gap: 28px; }
  .sheet-object { width: min(520px, 92vw); }
  .sheet-bg { position: fixed; inset: 0; z-index: -1; background: var(--bg); opacity: 0; }
.sheet { isolation: isolate; }
.sheet-why { margin: 18px 0 0; max-width: 360px; text-align: center; font-family: var(--serif); font-style: italic; font-size: 17px; line-height: 1.5; color: var(--ink-2); text-wrap: balance; }
.sheet-stage { padding-top: 2vh; }
}
@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .top { padding: 16px 18px; font-size: 14px; }
  .intro { padding: 13vh 20px 10vh; }
  .bio { font-size: 20px; margin-top: 30px; }
  .bio-en { font-size: 14px; }
  .shelf-track { --item: 236px; }
  .item .obj { width: 210px; margin: 16px 0 8px; }
  .ledger { padding: 12vh 20px 4vh; }
  .l-row { grid-template-columns: 1fr 64px; gap: 6px 14px; align-items: end; }
  .l-row .ruler { grid-column: 1 / -1; grid-row: 2; }
  .l-v { grid-row: 1; grid-column: 2; font-size: 28px; }
  .exp { padding: 12vh 20px 4vh; }
  .recon { grid-template-columns: 1fr 40px 1fr; padding: 14px; }
  .sheet-why { font-size: 15px; }
  .exp-row { grid-template-columns: 1fr; gap: 6px; }
  .end-line { font-size: 20px; }
  .sheet-title { font-size: 26px; text-wrap: pretty; }
  .sheet-tear { grid-template-columns: 1fr; gap: 2px; }
  .sheet-tear dd { margin-bottom: 12px; }
  .pills { padding: 0 12px calc(12px + env(safe-area-inset-bottom)); }
  body.sheet-open .pill-r { opacity: 0; pointer-events: none; }
  .pill-group { position: absolute; left: 50%; bottom: calc(12px + env(safe-area-inset-bottom)); translate: -50% 0; }
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { transition: none; opacity: 1; filter: none; transform: none; }
  .hint-dot { animation: none; }
  .ruler .r-bar, .r-pin, .seg, .pf-bar i { transition: none !important; }
}