@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

/* ============================================================
   KV-LAB · Unified Styles
   ============================================================ */

/* ---------- CSS variables ---------- */
:root{
  --bg:#EAEEF2; --surface:#FBFCFD; --surface-2:#E2E8EE; --border:#D2DBE3;
  --ink:#121922; --ink-soft:#3B4754; --muted:#74828F;
  --heat:#D9690F; --heat-bright:#F0871E; --heat-ink:#9A4709; --heat-soft:rgba(217,105,15,.10);
  --cool:#2C7DA0; --grid:rgba(60,80,100,.055); --block-cold:rgba(70,90,110,.10);
  --shadow:0 1px 2px rgba(20,40,60,.05),0 8px 24px -12px rgba(20,40,60,.14);
  --shadow-lift:0 2px 4px rgba(20,40,60,.06),0 18px 40px -18px rgba(20,40,60,.22);
  --content-width:960px;
  --font-display:'Space Grotesk',system-ui,sans-serif;
  --font-body:'IBM Plex Sans',system-ui,sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;
  /* log type accent colors */
  --paper:#5b6b8a; --paper-bg:rgba(91,107,138,.07); --paper-border:rgba(91,107,138,.25);
  --essay:#7a5bb0; --essay-bg:rgba(122,91,176,.07); --essay-border:rgba(122,91,176,.25);
  --code:#2f8a9c; --code-bg:rgba(47,138,156,.07); --code-border:rgba(47,138,156,.25);
  --bench:#D9690F; --bench-bg:rgba(217,105,15,.08); --bench-border:rgba(217,105,15,.3);
  --note:#74828F; --note-bg:rgba(116,130,143,.06); --note-border:rgba(116,130,143,.2);
}
:root[data-theme="dark"]{
  --bg:#0D1218; --surface:#161E27; --surface-2:#1D2733; --border:#2A3643;
  --ink:#E7EDF3; --ink-soft:#B0BCC8; --muted:#6E7C89;
  --heat:#F0871E; --heat-bright:#FBA94A; --heat-ink:#FBB463; --heat-soft:rgba(240,135,30,.13);
  --cool:#56B6D9; --grid:rgba(140,170,200,.05); --block-cold:rgba(150,175,200,.09);
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px -14px rgba(0,0,0,.6);
  --shadow-lift:0 2px 6px rgba(0,0,0,.35),0 22px 48px -20px rgba(0,0,0,.7);
  /* log type accent colors (dark) */
  --paper:#9db0d4; --paper-bg:rgba(157,176,212,.08); --paper-border:rgba(157,176,212,.3);
  --essay:#bda3e0; --essay-bg:rgba(189,163,224,.08); --essay-border:rgba(189,163,224,.3);
  --code:#6ec5d6; --code-bg:rgba(110,197,214,.08); --code-border:rgba(110,197,214,.3);
  --bench:#FBA94A; --bench-bg:rgba(251,169,74,.1); --bench-border:rgba(251,169,74,.35);
  --note:#6E7C89; --note-bg:rgba(110,124,137,.07); --note-border:rgba(110,124,137,.2);
}
:root[data-theme="dark"] .topbar .pct{color:var(--heat-ink)}
:root[data-theme="dark"] .b-read{color:#9db0d4}
:root[data-theme="dark"] .b-write{color:#bda3e0}
:root[data-theme="dark"] .b-py{color:#6ec5d6}
:root[data-theme="dark"] .b-check{color:#74cfa1}

/* ---------- reset & base ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);font-family:var(--font-body);
  line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased;
  transition:background .35s ease,color .35s ease;
}
a{color:var(--cool);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .15s}
a:hover{border-bottom-color:var(--cool)}
.mono{font-family:var(--font-mono)}
code{overflow-wrap:anywhere;word-break:break-word}
.eyebrow{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);font-weight:500}

/* ---------- topbar ---------- */
.topbar{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 88%,transparent);
  backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--border);
  transition:background .35s,border-color .35s;min-height:60px;display:flex;align-items:center}
.topbar-inner{max-width:var(--content-width);margin:0 auto;padding:.7rem 1.5rem;display:flex;align-items:center;gap:1.1rem;width:100%}
.brand{font-family:var(--font-mono);font-weight:600;letter-spacing:.08em;font-size:.95rem;
  display:flex;align-items:center;gap:.5rem;white-space:nowrap}
.brand .dot{width:9px;height:9px;border-radius:2px;background:var(--heat);box-shadow:0 0 10px var(--heat-bright)}

/* progress bar */
.topbar .track{flex:1;height:7px;background:var(--block-cold);border-radius:99px;overflow:hidden;min-width:60px}
.topbar .fill{height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--heat),var(--heat-bright));transition:width .5s cubic-bezier(.2,.7,.2,1)}
.topbar .pct{font-family:var(--font-mono);font-size:.82rem;font-weight:600;min-width:3ch;text-align:right;color:var(--heat-ink)}

/* reset button */
.iconbtn{background:transparent;border:1px solid var(--border);color:var(--ink-soft);
  border-radius:8px;width:34px;height:34px;cursor:pointer;font-size:.95rem;
  display:grid;place-items:center;transition:all .15s;font-family:var(--font-mono)}
.iconbtn:hover{color:var(--ink);border-color:var(--muted);transform:translateY(-1px)}
.iconbtn svg{width:16px;height:16px;display:block;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* page switcher */
.page-switch{display:inline-flex;align-items:center;gap:.18rem;margin-left:auto;padding:.18rem;
  background:var(--surface-2);border:1px solid var(--border);border-radius:9px;box-shadow:inset 0 1px 0 rgba(255,255,255,.2)}
.page-tab{display:inline-flex;align-items:center;justify-content:center;padding:.3rem .55rem;
  border-radius:6px;border:1px solid transparent;font-family:var(--font-mono);font-size:.68rem;font-weight:600;
  letter-spacing:.08em;text-transform:uppercase;color:var(--muted);text-decoration:none;white-space:nowrap;
  transition:background .15s,color .15s,border-color .15s,box-shadow .15s}
.page-tab:hover{color:var(--ink);border-bottom-color:transparent}
.page-tab[aria-current="page"]{background:var(--surface);color:var(--heat-ink);border-color:rgba(0,0,0,.03);box-shadow:var(--shadow)}

/* ---------- nav ---------- */
.nav-link{display:inline-flex;align-items:center;gap:.35rem;
  font-family:var(--font-mono);font-size:.78rem;font-weight:500;color:var(--ink-soft);
  background:var(--surface);border:1px solid var(--border);border-radius:8px;
  padding:.35rem .75rem;cursor:pointer;text-decoration:none;transition:all .15s;white-space:nowrap}
.nav-link:hover{color:var(--ink);border-color:var(--muted);background:var(--surface-2)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--border)}
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:26px 26px;mask-image:radial-gradient(ellipse 80% 75% at 70% 0%,#000 30%,transparent 80%);pointer-events:none}
.hero-inner{max-width:var(--content-width);margin:0 auto;padding:4rem 1.5rem 3rem;position:relative}
.hero h1{font-family:var(--font-display);font-weight:600;font-size:clamp(2rem,4.4vw,3.15rem);
  line-height:1.04;letter-spacing:-.02em;margin:.7rem 0 .9rem}
.hero h1 em{font-style:normal;color:var(--heat)}
.hero .lede{font-size:1.06rem;color:var(--ink-soft);max-width:46ch}
.hero .sub{margin-top:1.3rem;display:flex;gap:.6rem;flex-wrap:wrap}

/* ---------- memory pool ---------- */
.pool{background:var(--surface);border:1px solid var(--border);border-radius:16px;
  padding:1.4rem;box-shadow:var(--shadow)}
.pool-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:1rem}
.pool-stat{font-family:var(--font-mono);font-weight:600;font-size:1.7rem;color:var(--ink);line-height:1}
.pool-stat .of{color:var(--muted);font-weight:400}
.pool-pct{font-family:var(--font-mono);font-size:1.05rem;font-weight:600;color:var(--heat-ink)}
.pool-grid{display:grid;grid-template-columns:repeat(14,1fr);grid-template-rows:repeat(var(--pool-rows,4),1fr);grid-auto-flow:column;gap:4px}
.blk{aspect-ratio:1/1;border-radius:3px;background:var(--block-cold);
  transition:background .4s ease,box-shadow .4s ease,transform .25s ease}
.blk.hot{background:linear-gradient(150deg,var(--heat-bright),var(--heat));
  box-shadow:0 0 8px -1px var(--heat-bright);transform:scale(1.04)}
.pool-legend{margin-top:1rem;display:flex;gap:1.2rem;font-family:var(--font-mono);
  font-size:.72rem;color:var(--muted);letter-spacing:.04em}
.pool-legend span{display:flex;align-items:center;gap:.4rem}
.pool-legend i{width:11px;height:11px;border-radius:2px;display:inline-block}
.pool-legend i.cold{background:var(--block-cold)}
.pool-legend i.warm{background:var(--heat)}

/* ---------- orientation ---------- */
.orient{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:2rem 2.1rem;box-shadow:var(--shadow)}
.orient h2{font-family:var(--font-display);font-weight:600;font-size:1.5rem;letter-spacing:-.01em;margin:.4rem 0 1.2rem}
.orient .grid2{column-count:2;column-gap:2.4rem;margin-top:.4rem}
.orient .grid2 > div{break-inside:avoid;margin:0 0 1.6rem}
.orient h3{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--heat-ink);margin-bottom:.5rem;font-weight:600}
.orient p{color:var(--ink-soft);font-size:.95rem}
.orient code{font-family:var(--font-mono);font-size:.86em;background:var(--surface-2);
  padding:.1rem .35rem;border-radius:5px;color:var(--ink)}

/* ---------- callout (curriculum) ---------- */
.orient .callout{margin-top:1.7rem;border-left:3px solid var(--heat);background:var(--heat-soft);
  padding:1rem 1.2rem;border-radius:0 10px 10px 0}
.orient .callout p{color:var(--ink);font-size:.95rem}
.orient .callout strong{color:var(--heat-ink)}

/* ---------- layer ---------- */
.layer-head{display:flex;align-items:flex-end;gap:1.3rem;margin-bottom:1.6rem;flex-wrap:wrap}
.layer-num{font-family:var(--font-display);font-weight:700;font-size:clamp(3rem,7vw,4.6rem);
  line-height:.8;color:var(--ink);letter-spacing:-.04em;opacity:.16;transition:opacity .4s,color .4s}
.layer[data-complete="true"] .layer-num{opacity:1;color:var(--heat)}
.layer-meta{flex:1;min-width:240px}
.layer-title{font-family:var(--font-display);font-weight:600;font-size:1.7rem;letter-spacing:-.01em;margin:.25rem 0 .4rem}
.layer-goal{color:var(--ink-soft);font-size:.96rem;max-width:62ch}
.layer-prog{display:flex;align-items:center;gap:.75rem;margin-top:.9rem}
.layer-bar{flex:1;max-width:300px;height:6px;background:var(--block-cold);border-radius:99px;overflow:hidden}
.layer-bar-fill{height:100%;width:0;background:linear-gradient(90deg,var(--heat),var(--heat-bright));
  border-radius:99px;transition:width .5s cubic-bezier(.2,.7,.2,1)}
.layer-count{font-family:var(--font-mono);font-size:.8rem;color:var(--muted);font-weight:500;white-space:nowrap}

/* ---------- module card ---------- */
.mod{background:var(--surface);border:1px solid var(--border);border-radius:14px;
  padding:1.5rem 1.6rem;margin-bottom:1.1rem;box-shadow:var(--shadow);
  position:relative;transition:box-shadow .2s,border-color .3s}
.mod::before{content:"";position:absolute;left:0;top:1.5rem;bottom:1.5rem;width:3px;border-radius:0 3px 3px 0;
  background:var(--border);transition:background .3s}
.mod[data-complete="true"]::before{background:var(--heat)}
.mod-head{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;margin-bottom:.2rem}
.mod-eyebrow{display:flex;align-items:center;gap:.6rem}
.mod-tick{width:16px;height:16px;border-radius:50%;border:1.5px solid var(--muted);display:inline-grid;place-items:center;
  opacity:.5;transition:all .3s}
.mod[data-complete="true"] .mod-tick{background:var(--heat);border-color:var(--heat);opacity:1}
.mod-tick::after{content:"";width:4px;height:7px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg) translateY(-1px);opacity:0;transition:opacity .3s}
.mod[data-complete="true"] .mod-tick::after{opacity:1}
.mod-count{font-family:var(--font-mono);font-size:.76rem;color:var(--muted);font-weight:500}
.mod-title{font-family:var(--font-display);font-weight:600;font-size:1.28rem;letter-spacing:-.01em;margin:.35rem 0 1.1rem}
.block-label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);font-weight:600;margin:1.25rem 0 .55rem}
.block-label:first-of-type{margin-top:.2rem}
.objectives{color:var(--ink-soft);font-size:.94rem}
.objectives + .block-label{margin-top:1.25rem}

/* ---------- task ---------- */
.task{display:flex;gap:.8rem;align-items:flex-start;padding:.62rem .7rem;border-radius:9px;
  cursor:pointer;transition:background .15s;outline:none;border:1px solid transparent}
.task:hover{background:var(--surface-2)}
.task:focus-visible{border-color:var(--heat);box-shadow:0 0 0 2px var(--heat-soft)}
.box{flex-shrink:0;width:20px;height:20px;border-radius:6px;border:1.6px solid var(--muted);
  margin-top:1px;display:grid;place-items:center;transition:all .2s;background:var(--surface)}
.box::after{content:"";width:5px;height:9px;border:solid #fff;border-width:0 2.2px 2.2px 0;
  transform:rotate(45deg) translateY(-1px) scale(.4);opacity:0;transition:all .2s}
.task[aria-checked="true"] .box{background:var(--heat);border-color:var(--heat)}
.task[aria-checked="true"] .box::after{opacity:1;transform:rotate(45deg) translateY(-1px) scale(1)}
.task-body{flex:1;min-width:0}
.task-title{font-weight:500;font-size:.97rem;color:var(--ink);transition:color .2s;overflow-wrap:break-word}
.task-title a{font-weight:500}
.task[aria-checked="true"] .task-title{color:var(--muted);text-decoration:line-through;text-decoration-color:var(--muted)}
.task-desc{font-size:.9rem;color:var(--ink-soft);margin-top:.25rem;transition:opacity .2s;overflow-wrap:break-word}
.task[aria-checked="true"] .task-desc{opacity:.5}

/* ---------- badges ---------- */
.badge{display:inline-block;font-family:var(--font-mono);font-size:.64rem;font-weight:600;letter-spacing:.08em;
  padding:.18rem .42rem;border-radius:5px;vertical-align:middle;margin-left:.5rem;border:1px solid transparent;white-space:nowrap}
.b-read{color:#5b6b8a;background:rgba(91,107,138,.13);border-color:rgba(91,107,138,.22)}
.b-write{color:#7a5bb0;background:rgba(122,91,176,.13);border-color:rgba(122,91,176,.22)}
.b-py{color:#2f8a9c;background:rgba(47,138,156,.13);border-color:rgba(47,138,156,.22)}
.b-build{color:var(--heat-ink);background:var(--heat-soft);border-color:rgba(217,105,15,.25)}
.b-stretch{color:var(--muted);background:var(--block-cold);border-color:var(--border)}
.b-check{color:#2f8a5b;background:rgba(47,138,91,.13);border-color:rgba(47,138,91,.25)}
.b-cap{color:var(--heat-ink);background:var(--heat-soft);border-color:rgba(217,105,15,.4)}
.cap-flag{display:inline-block;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;
  color:var(--heat-ink);margin-top:.3rem;font-weight:600}
.cap-flag::before{content:"▸ "}

/* ---------- lab notes ---------- */
.notes-zone{margin-top:1.4rem;border-top:1px dashed var(--border);padding-top:.95rem}
.notes-toggle{display:inline-flex;align-items:center;gap:.5rem;background:transparent;border:none;
  cursor:pointer;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:600;padding:.15rem 0;transition:color .15s}
.notes-toggle:hover{color:var(--ink-soft)}
.notes-toggle:focus-visible{outline:2px solid var(--heat);outline-offset:3px;border-radius:4px}
.notes-toggle .ico{font-size:.92rem;line-height:1}
.notes-dot{width:7px;height:7px;border-radius:50%;background:var(--heat);opacity:0;transition:opacity .2s;
  box-shadow:0 0 6px var(--heat-bright)}
.notes-zone.has-notes .notes-dot{opacity:1}
.notes-body{display:none;margin-top:.7rem}
.notes-zone.open .notes-body{display:block}
.notes-ta{width:100%;min-height:96px;resize:vertical;display:block;
  font-family:var(--font-mono);font-size:.86rem;line-height:1.55;color:var(--ink);
  background:var(--surface-2);border:1px solid var(--border);border-radius:9px;padding:.7rem .8rem;
  transition:border-color .15s,box-shadow .15s,background .3s}
.notes-ta:focus{outline:none;border-color:var(--heat);box-shadow:0 0 0 2px var(--heat-soft)}
.notes-ta::placeholder{color:var(--muted)}

/* ---------- timeline ---------- */
.timeline-section{padding-top:0}
.timeline{position:relative;padding:3.2rem 0 0 2rem}
.timeline::before{content:"";position:absolute;left:6px;top:0;bottom:calc(1.5rem - .1rem - 6px);width:2px;
  background:var(--border);border-radius:2px}

.timeline-start{position:relative;padding-left:.15rem;min-height:1.5rem}
.timeline-start .pin{position:absolute;left:calc(-2rem + 1px);top:.1rem;width:12px;height:12px;border-radius:50%;
  border:2px solid var(--muted);background:var(--surface);z-index:1}
.timeline-start-text{display:flex;align-items:center;gap:.55rem;flex-wrap:wrap}
.timeline-start-label{font-family:var(--font-mono);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.timeline-start-date{font-family:var(--font-mono);font-size:.76rem;color:var(--ink-soft)}

/* ---------- entries ---------- */
.entry{position:relative;padding:0 0 2.8rem}
.entry:last-child{padding-bottom:0}
.entry .pin{position:absolute;left:-2rem;top:calc(1.5rem - (14px/2) + (21.75px/2) );width:14px;height:14px;border-radius:50%;
  border:2px solid var(--border);background:var(--bg);z-index:1;transition:border-color .3s,background .3s,box-shadow .3s}
.entry.type-paper .pin{background:var(--paper)}
.entry.type-essay .pin{background:var(--essay)}
.entry.type-code .pin{background:var(--code)}
.entry.type-bench .pin{background:var(--bench)}
.entry.type-note .pin{background:var(--note)}

.entry-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;
  padding:1.5rem 1.6rem;box-shadow:var(--shadow);
  transition:box-shadow .2s,border-color .3s;position:relative}
.entry-card::before{content:"";position:absolute;left:0;top:1.5rem;bottom:1.5rem;width:3px;
  border-radius:0 3px 3px 0;background:var(--border);transition:background .3s}
.entry-card:hover{box-shadow:var(--shadow-lift)}
.entry.type-paper .entry-card::before{background:var(--paper)}
.entry.type-essay .entry-card::before{background:var(--essay)}
.entry.type-code .entry-card::before{background:var(--code)}
.entry.type-bench .entry-card::before{background:var(--bench)}
.entry.type-note .entry-card::before{background:var(--note)}

/* ---------- entry headers ---------- */
.entry-header{display:flex;align-items:center;gap:.45rem;flex-wrap:wrap;margin-bottom:.75rem}
.entry-date{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);font-weight:500;letter-spacing:.04em}

.type-badge{font-family:var(--font-mono);font-size:.65rem;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;padding:.18rem .5rem;border-radius:4px}
.entry.type-paper .type-badge{color:var(--paper);background:var(--paper-bg)}
.entry.type-essay .type-badge{color:var(--essay);background:var(--essay-bg)}
.entry.type-code .type-badge{color:var(--code);background:var(--code-bg)}
.entry.type-bench .type-badge{color:var(--bench);background:var(--bench-bg)}
.entry.type-note .type-badge{color:var(--note);background:var(--note-bg)}

/* ---------- entry titles ---------- */
.entry-title a{color:inherit;text-decoration:none;border-bottom:1px solid transparent;
  transition:border-color .15s,background .15s}
.entry-title a::after{content:"\2197";font-size:.72em;opacity:0;margin-left:.25rem;
  vertical-align:-.05em;transition:opacity .15s}
.entry-title a:hover{border-bottom-color:currentColor}
.entry-title a:hover::after{opacity:.5}
.entry.type-paper .entry-title{font-size:1.25rem;margin:.15rem 0 .4rem}
.entry.type-paper .entry-title a{color:var(--ink)}
.entry.type-essay .entry-title{font-size:1.5rem;font-weight:600;margin:.15rem 0 .4rem;
  letter-spacing:-.02em;line-height:1.2}
.entry.type-essay .entry-title a{color:var(--ink)}
.entry.type-code .entry-title{font-size:1.2rem;margin:.15rem 0}
.entry.type-code .entry-title a{color:var(--ink)}
.entry.type-bench .entry-title{font-size:1.2rem;margin:.15rem 0 .35rem;font-weight:600}
.entry.type-bench .entry-title a{color:var(--ink)}
.entry.type-note .entry-title{font-size:1.15rem;margin:.15rem 0 .35rem;font-weight:500;line-height:1.3}
.entry.type-note .entry-title a{color:var(--ink)}

/* ---------- per-type content refs ---------- */
.entry.type-paper .paper-ref{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);
  margin-top:.35rem;letter-spacing:.02em}
.entry.type-paper .paper-ref a{font-family:inherit;font-weight:400;font-size:inherit}
.entry.type-essay .entry-assignment{font-family:var(--font-mono);font-size:.75rem;
  color:var(--essay);font-weight:500;margin-bottom:.1rem;letter-spacing:.02em}
.entry.type-code .commit-ref{font-family:var(--font-mono);font-size:.78rem;color:var(--ink-soft);
  margin-bottom:.8rem;display:flex;align-items:center;gap:.4rem;flex-wrap:wrap}
.entry.type-code .commit-ref a{font-family:inherit;font-weight:500}
.entry.type-code .commit-hash{font-family:var(--font-mono);font-size:.7rem;color:var(--code);
  background:var(--code-bg);padding:.15rem .45rem;border-radius:4px;font-weight:500;letter-spacing:.03em}
.entry.type-code .file-ref{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);
  margin-bottom:.6rem;display:flex;align-items:center;gap:.3rem;flex-wrap:wrap}
.entry.type-code .file-ref a{font-family:inherit;font-weight:400}

/* ---------- paper excerpt ---------- */
.paper-excerpt{border-left:3px solid var(--paper);background:var(--paper-bg);
  padding:1rem 1.2rem;border-radius:0 8px 8px 0;margin:1rem 0;font-style:normal;
  color:var(--ink-soft);line-height:1.7}
.paper-excerpt p{margin:0 0 .4rem;font-size:.94rem}
.paper-excerpt p:last-child{margin-bottom:0}
.paper-excerpt .cite{font-family:var(--font-mono);font-size:.68rem;color:var(--muted);
  font-style:normal;letter-spacing:.04em;display:block;margin-top:.5rem;padding-top:.4rem;
  border-top:1px solid var(--paper-border)}

/* ---------- code blocks ---------- */
.entry pre{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;
  margin:.9rem 0;overflow:hidden;position:relative;padding-top:2rem}
.entry pre::before{content:attr(data-lang);position:absolute;top:0;left:0;right:0;
  font-family:var(--font-mono);font-size:.7rem;color:var(--muted);
  background:var(--border);padding:.4rem .8rem;letter-spacing:.08em;text-transform:uppercase;opacity:.8}
.entry pre code{display:block;padding:1rem 1.2rem;overflow-x:auto;
  font-family:var(--font-mono);font-size:.82rem;line-height:1.6;color:var(--ink);
  white-space:pre-wrap;word-break:break-word}
.entry code{font-family:var(--font-mono);font-size:.84em;background:var(--surface-2);
  padding:.1rem .35rem;border-radius:5px;color:var(--ink)}

/* ---------- tables ---------- */
.entry table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.88rem}
.entry th{text-align:left;padding:.6rem .8rem;border-bottom:2px solid var(--border);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);font-weight:600}
.entry td{padding:.55rem .8rem;border-bottom:1px solid var(--border);color:var(--ink-soft)}
.entry tr:last-child td{border-bottom:none}
.entry tbody tr:nth-child(even){background:var(--surface-2)}
.entry.type-paper table th{background:var(--paper-bg)}
.entry.type-essay table th{background:var(--essay-bg)}
.entry.type-code table th{background:var(--code-bg)}
.entry.type-bench table th{background:var(--bench-bg);color:var(--bench)}
.entry.type-note table th{background:var(--note-bg)}

/* ---------- entry content ---------- */
.entry h3{font-family:var(--font-display);font-weight:600;font-size:1.15rem;letter-spacing:-.005em;
  margin:1.2rem 0 .45rem;color:var(--ink)}
.entry h4{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--heat-ink);font-weight:600;margin:1rem 0 .35rem}
.entry ul,.entry ol{padding-left:1.4rem;margin:.5rem 0}
.entry li{margin:.25rem 0;color:var(--ink-soft)}
.entry p{margin:.6rem 0;color:var(--ink-soft);font-size:.94rem;line-height:1.65}

/* ---------- callout (log) ---------- */
.entry .callout{border-radius:8px;margin:.9rem 0;padding:.9rem 1.2rem;line-height:1.65}
.entry .callout p{margin:0;font-size:.93rem}
.entry .callout strong{font-weight:600}
.entry.type-paper .callout{border-left:3px solid var(--paper);background:var(--paper-bg)}
.entry.type-paper .callout p{color:var(--ink-soft)}
.entry.type-paper .callout strong{color:var(--paper)}
.entry.type-essay .callout{border-left:3px solid var(--essay);background:var(--essay-bg)}
.entry.type-essay .callout p{color:var(--ink-soft)}
.entry.type-essay .callout strong{color:var(--essay)}
.entry.type-code .callout{border-left:3px solid var(--code);background:var(--code-bg)}
.entry.type-code .callout p{color:var(--ink-soft)}
.entry.type-code .callout strong{color:var(--code)}
.entry.type-bench .callout{border-left:3px solid var(--bench);background:var(--bench-bg)}
.entry.type-bench .callout p{color:var(--ink-soft)}
.entry.type-bench .callout strong{color:var(--bench)}
.entry.type-note .callout{border-left:3px solid var(--note);background:var(--note-bg)}
.entry.type-note .callout p{color:var(--ink-soft)}
.entry.type-note .callout strong{color:var(--note)}

/* ---------- layout shell ---------- */
main{max-width:var(--content-width);margin:0 auto;padding:0 1.5rem}
section{padding:3.2rem 0}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--border);margin-top:1rem}
.foot-inner{max-width:var(--content-width);margin:0 auto;padding:3rem 1.5rem 4rem}
.foot-inner h2{font-family:var(--font-display);font-weight:600;font-size:1.3rem;margin-bottom:.9rem}
.foot-inner p{color:var(--ink-soft);font-size:.95rem;max-width:70ch;margin-bottom:.8rem}
.foot-note{font-family:var(--font-mono);font-size:.74rem;color:var(--muted);margin-top:1.5rem;letter-spacing:.02em}

/* ---------- mobile ---------- */
@media (max-width:760px){
  .topbar-inner{flex-wrap:wrap;row-gap:.7rem}
  .page-switch{order:10;width:100%;margin-left:0}
  .page-tab{flex:1;padding:.5rem .75rem}
  .hero-inner{padding-top:3rem}
  .topbar .brand span.full{display:none}
  .orient .grid2{column-count:1}
  .orient .grid2 > div{margin-bottom:1.3rem}
  .timeline{padding-left:2rem}
  .entry .pin{left:-2rem}
  .entry-card{padding:1.5rem 1.6rem}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}}