/* kelvinbiffi.com · one visual system for every page. Hand-written. */

:root {
  --bg: #060608;
  --bg-2: #0c0c11;
  --surface: rgba(20, 20, 27, .66);
  --surface-2: rgba(28, 28, 38, .72);
  --line: rgba(255, 255, 255, .08);
  --line-2: rgba(255, 255, 255, .14);
  --ink: #ededf2;
  --dim: #a1a1b0;
  --mute: #6e6e7e;
  --v: #8b5cf6;
  --c: #22d3ee;
  --amber: #f5b544;
  --red: #ff6b75;
  --green: #4ade80;
  --grad: linear-gradient(100deg, #c4b5fd, #67e8f9 60%, #ffffff);
  --sans: Geist, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --serif: "Instrument Serif", Georgia, serif;
  --r: 18px;
  --r-sm: 12px;
  --gut: clamp(16px, 4vw, 40px);
  --max: 1240px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0; min-height: 100vh;
  background: var(--bg); color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
body::before { content: ""; position: fixed; inset: 0; z-index: -2; background: radial-gradient(900px 600px at 80% 10%, rgba(139, 92, 246, .14), transparent 60%), radial-gradient(700px 500px at 10% 90%, rgba(34, 211, 238, .08), transparent 60%); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--c); outline-offset: 3px; border-radius: 6px; }
::selection { background: rgba(139, 92, 246, .45); color: #fff; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -9999px; z-index: 200; }
.skip:focus { left: 16px; top: 12px; background: var(--ink); color: var(--bg); padding: 10px 14px; border-radius: 10px; }
.muted { color: var(--mute); }
.small { font-size: 14px; }

/* ---------- ambient layers ---------- */
#field { position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: -1; opacity: 0; transition: opacity 1.2s var(--ease); pointer-events: none; }
#field.on { opacity: 1; }
.vignette { position: fixed; inset: 0; z-index: -1; pointer-events: none; background: radial-gradient(ellipse at center, transparent 40%, rgba(6, 6, 8, .72) 100%); }
.grain { position: fixed; inset: 0; z-index: 90; pointer-events: none; opacity: .05; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
.progress { position: fixed; top: 0; left: 0; height: 2px; width: 100%; z-index: 120; transform-origin: 0 50%; transform: scaleX(0); background: linear-gradient(90deg, var(--v), var(--c)); }

/* ---------- type ---------- */
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding-left: var(--gut); padding-right: var(--gut); }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; font: 500 12px/1.2 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--c); }
.eyebrow::before { content: ""; width: 24px; height: 1px; background: currentColor; flex: none; }
.display { font-weight: 500; font-size: clamp(42px, 6.4vw, 88px); line-height: .98; letter-spacing: -.045em; margin: 0 0 26px; text-wrap: balance; }
.display-2 { font-weight: 500; font-size: clamp(38px, 5.4vw, 72px); line-height: 1; letter-spacing: -.04em; margin: 0 0 22px; text-wrap: balance; max-width: 18ch; }
.display em, .display-2 em, .h2 em, .foot-big em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -.01em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; padding-right: .06em; }
.h2 { font-weight: 500; font-size: clamp(30px, 3.6vw, 48px); line-height: 1.05; letter-spacing: -.035em; margin: 0; text-wrap: balance; max-width: 22ch; }
.h3 { font-weight: 500; font-size: clamp(22px, 2.2vw, 28px); letter-spacing: -.02em; margin: 0; }
.h4 { font-weight: 500; font-size: 18px; margin: 0 0 12px; }
.lede { font-size: clamp(17px, 1.5vw, 20px); color: var(--dim); max-width: 50ch; margin: 0 0 32px; text-wrap: pretty; }
.lede b { color: var(--ink); font-weight: 500; }
.sec-sub { color: var(--dim); max-width: 60ch; margin: 14px 0 0; font-size: 17px; text-wrap: pretty; }

.word { display: inline-block; }
.js .split .word { opacity: 0; transform: translateY(35%) rotate(2deg); filter: blur(8px); animation: rise .9s var(--ease) forwards; }
@keyframes rise { to { opacity: 1; transform: none; filter: none; } }

/* ---------- buttons, links, chips ---------- */
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 18px; border-radius: 12px; border: 1px solid var(--line-2); background: rgba(255, 255, 255, .04); color: var(--ink); text-decoration: none; font: 500 15px/1 var(--sans); cursor: pointer; transition: transform .2s var(--ease), background .2s, border-color .2s, box-shadow .2s; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); border-color: rgba(255, 255, 255, .28); }
.btn:active { transform: translateY(0); }
.btn-light { background: var(--ink); color: #08080b; border-color: transparent; box-shadow: 0 10px 40px rgba(139, 92, 246, .3); }
.btn-light:hover { background: #fff; border-color: transparent; }
.btn-accent { background: var(--pc, var(--c)); color: #0a0a0c; border-color: transparent; }
.btn-ghost { background: rgba(255, 255, 255, .03); }
.btn-quiet { border-color: transparent; background: transparent; color: var(--dim); }
.btn-quiet:hover { color: var(--ink); }
.btn-sm { min-height: 36px; padding: 0 13px; font-size: 14px; border-radius: 10px; }
.btn-lg { min-height: 52px; padding: 0 22px; font-size: 16px; border-radius: 14px; }
.link-arrow { display: inline-flex; gap: 8px; align-items: center; color: var(--ink); text-decoration: none; font-weight: 500; font-size: 15px; border-bottom: 1px solid var(--line-2); padding-bottom: 3px; transition: border-color .2s, gap .2s; }
.link-arrow:hover { border-color: var(--ink); gap: 12px; }
.tags { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.tags li { font: 12px/1 var(--mono); color: var(--dim); border: 1px solid var(--line); padding: 6px 8px; border-radius: 999px; background: rgba(255, 255, 255, .02); }
.tags.big li { font-size: 13px; padding: 8px 11px; color: var(--ink); }
.chip { font: 14px/1.2 var(--sans); color: var(--dim); background: rgba(255, 255, 255, .03); border: 1px solid var(--line); border-radius: 999px; padding: 8px 12px; cursor: pointer; transition: color .2s, border-color .2s, background .2s; text-align: left; }
.chip:hover { color: var(--ink); border-color: var(--line-2); background: rgba(255, 255, 255, .06); }
kbd { font: 500 11px/1 var(--mono); color: var(--dim); border: 1px solid var(--line-2); border-bottom-width: 2px; border-radius: 6px; padding: 3px 6px; background: rgba(255, 255, 255, .03); }

/* ---------- cards with a light that follows the cursor ---------- */
.card { position: relative; border-radius: var(--r); background: var(--surface); border: 1px solid var(--line); backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .05); }
.spot { isolation: isolate; }
.spot::before { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; z-index: -1; opacity: 0; transition: opacity .3s; background: radial-gradient(380px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--pc, var(--v)) 22%, transparent), transparent 65%); }
.spot::after { content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none; padding: 1px; opacity: 0; transition: opacity .3s; background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--pc, var(--v)) 80%, transparent), transparent 70%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.spot:hover::before, .spot:hover::after { opacity: 1; }

/* ---------- reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(18px); filter: blur(6px); transition: opacity .8s var(--ease), transform .8s var(--ease), filter .8s var(--ease); transition-delay: var(--d, 0ms); }
.js .reveal.in { opacity: 1; transform: none; filter: none; }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 100; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px var(--gut); transition: background .3s, border-color .3s, backdrop-filter .3s; border-bottom: 1px solid transparent; }
.top.scrolled { background: rgba(6, 6, 8, .72); backdrop-filter: blur(16px) saturate(140%); -webkit-backdrop-filter: blur(16px) saturate(140%); border-color: var(--line); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; letter-spacing: -.01em; white-space: nowrap; }
.brand i { width: 24px; height: 24px; border-radius: 8px; background: conic-gradient(from 200deg, var(--v), var(--c), var(--v)); box-shadow: 0 0 22px rgba(139, 92, 246, .55); transition: transform .6s var(--ease); }
.brand:hover i { transform: rotate(180deg); }
.nav { display: flex; gap: 4px; padding: 4px; border-radius: 999px; border: 1px solid var(--line); background: rgba(12, 12, 17, .55); backdrop-filter: blur(12px); }
.nav a { text-decoration: none; color: var(--dim); font-size: 14px; padding: 7px 14px; border-radius: 999px; transition: color .2s, background .2s; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current] { color: var(--ink); background: rgba(255, 255, 255, .09); }
.top-r { display: flex; align-items: center; gap: 10px; }
.kbar { display: inline-flex; align-items: center; gap: 8px; height: 36px; padding: 0 8px 0 12px; border-radius: 10px; border: 1px solid var(--line); background: rgba(12, 12, 17, .55); color: var(--dim); cursor: pointer; font-size: 14px; transition: color .2s, border-color .2s; }
.kbar:hover { color: var(--ink); border-color: var(--line-2); }
.lang { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.lang a { text-decoration: none; font: 500 12px/1 var(--mono); color: var(--mute); padding: 11px 10px; }
.lang a[aria-current] { color: var(--ink); background: rgba(255, 255, 255, .08); }
.burger { display: none; width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--line); background: rgba(12, 12, 17, .55); cursor: pointer; position: relative; }
.burger span { position: absolute; left: 12px; right: 12px; height: 1.5px; background: var(--ink); transition: transform .3s var(--ease), top .3s var(--ease); }
.burger span:first-child { top: 16px; } .burger span:last-child { top: 24px; }
.burger[aria-expanded="true"] span:first-child { top: 20px; transform: rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { top: 20px; transform: rotate(-45deg); }
.sheet[hidden] { display: none; }
.sheet { position: fixed; inset: 0; z-index: 99; padding: 96px var(--gut) 32px; background: rgba(6, 6, 8, .94); backdrop-filter: blur(20px); display: flex; flex-direction: column; justify-content: space-between; }
.sheet nav { display: flex; flex-direction: column; }
.sheet nav a { text-decoration: none; font-size: 34px; font-weight: 500; letter-spacing: -.03em; padding: 8px 0; border-bottom: 1px solid var(--line); color: var(--dim); }
.sheet nav a[aria-current] { color: var(--ink); }
.sheet-foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; color: var(--dim); }
.sheet-foot a { color: var(--dim); }
@media (max-width: 1080px) { .kbar-t { display: none; } .kbar { padding: 0 10px; } .kbar kbd { display: none; } }
@media (max-width: 920px) { .nav, .top-r .lang, .top-r .cv { display: none; } .burger { display: block; } }

/* ---------- sections ---------- */
main { position: relative; }
.sec { padding-top: clamp(80px, 11vw, 150px); }
.sec-tight { padding-top: clamp(28px, 4vw, 48px); }
.sec-head { margin-bottom: clamp(28px, 4vw, 48px); }
.split-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; flex-wrap: wrap; }
.page-head { padding-top: clamp(56px, 9vw, 120px); }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: center; min-height: calc(100svh - 72px); padding-top: 32px; padding-bottom: 48px; }
.proof { display: flex; flex-wrap: wrap; gap: 14px 32px; margin: 40px 0 0; }
.proof div { min-width: 90px; }
.proof dt { font-size: 24px; font-weight: 500; letter-spacing: -.02em; }
.proof dd { margin: 0; color: var(--mute); font-size: 13px; }
.hero-stage { position: relative; perspective: 1400px; }
.float { position: absolute; z-index: 2; font: 12px/1 var(--mono); color: var(--dim); border: 1px solid var(--line); background: rgba(10, 10, 14, .82); backdrop-filter: blur(10px); padding: 9px 11px; border-radius: 10px; white-space: nowrap; }
@media (prefers-reduced-motion: no-preference) { .float { animation: float 6s ease-in-out infinite; } }
.f1 { top: -16px; right: 16px; } .f2 { bottom: 44px; left: -28px; animation-delay: -3s !important; }
@keyframes float { 50% { transform: translateY(-10px); } }

/* live agent window */
.win { border-radius: 20px; overflow: hidden; background: rgba(16, 16, 22, .74); border: 1px solid var(--line); backdrop-filter: blur(24px) saturate(150%); -webkit-backdrop-filter: blur(24px) saturate(150%); box-shadow: 0 40px 120px rgba(0, 0, 0, .6), inset 0 1px 0 rgba(255, 255, 255, .06); transform: rotateY(-7deg) rotateX(4deg); transition: transform .6s var(--ease); --pc: var(--v); }
.win-bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; border-bottom: 1px solid var(--line); font: 12px/1 var(--mono); color: var(--mute); }
.win-bar i { width: 10px; height: 10px; border-radius: 50%; background: #2a2a33; }
.win-bar span:first-of-type { margin-left: 8px; color: var(--dim); }
.win-tag { margin-left: auto; color: var(--mute); }
.win-feed { padding: 18px; display: flex; flex-direction: column; gap: 12px; height: 500px; overflow: hidden; }
.it { opacity: 0; transform: translateY(12px) scale(.98); filter: blur(4px); transition: all .5s var(--ease); }
.it.in { opacity: 1; transform: none; filter: none; }
.u { align-self: flex-end; max-width: 82%; background: #25253a; border-radius: 16px 16px 4px 16px; padding: 10px 14px; font-size: 15px; }
.think { font: 13px/1 var(--mono); }
.shimmer { background: linear-gradient(90deg, var(--mute) 20%, #fff 50%, var(--mute) 80%); background-size: 200% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; animation: sh 1.6s linear infinite; }
@keyframes sh { to { background-position: -200% 0; } }
.tool { border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, .02); font: 13px/1.5 var(--mono); }
.tool header { display: flex; justify-content: space-between; gap: 10px; padding: 10px 12px 4px; color: var(--c); }
.tool header span:last-child { color: var(--green); }
.tool pre { margin: 0; padding: 0 12px 10px; color: #b9b9c8; white-space: pre-wrap; font: inherit; }
.cites { display: flex; gap: 6px; flex-wrap: wrap; }
.cite { font: 12px/1 var(--mono); border: 1px solid rgba(34, 211, 238, .35); color: #a5f3fc; padding: 6px 9px; border-radius: 999px; background: rgba(34, 211, 238, .06); }
.approve { border-radius: 14px; border: 1px solid rgba(245, 181, 68, .45); background: linear-gradient(180deg, rgba(245, 181, 68, .1), rgba(245, 181, 68, .02)); padding: 14px; }
.approve h4 { margin: 0 0 4px; font-weight: 500; font-size: 15px; display: flex; gap: 8px; align-items: center; }
.approve h4::before { content: "!"; flex: none; display: grid; place-items: center; width: 18px; height: 18px; border-radius: 6px; background: var(--amber); color: #1a1205; font: 700 12px/1 var(--sans); }
.approve p { margin: 0 0 10px; color: var(--dim); font-size: 13px; }
.diff { font: 12px/1.7 var(--mono); border-radius: 8px; background: rgba(0, 0, 0, .35); padding: 8px 10px; margin-bottom: 12px; }
.diff .add { color: #86efac; } .diff .del { color: #fca5a5; text-decoration: line-through; opacity: .7; }
.approve .row button { font: 500 13px/1 var(--sans); border-radius: 9px; padding: 9px 12px; border: 1px solid var(--line); background: rgba(255, 255, 255, .05); transition: box-shadow .3s; }
.approve .row .go { background: var(--amber); color: #1a1205; border: 0; }
.approve .row .hl { box-shadow: 0 0 0 2px var(--c); }
.refuse { border-radius: 14px; border: 1px solid rgba(255, 107, 117, .4); background: rgba(255, 107, 117, .06); padding: 12px 14px; font-size: 14px; }
.refuse b { color: #fecaca; font-weight: 500; display: block; margin-bottom: 2px; }
.refuse small { color: var(--mute); font-family: var(--mono); }
.win-meter { display: flex; gap: 16px; align-items: center; border-top: 1px solid var(--line); padding: 12px 16px; font: 12px/1 var(--mono); color: var(--mute); }
.win-meter b { color: var(--ink); font-weight: 500; }
.win-bar2 { flex: 1; height: 4px; border-radius: 4px; background: rgba(255, 255, 255, .06); overflow: hidden; }
.win-bar2 i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--v), var(--c)); transition: width .6s; }

/* ---------- pillars ---------- */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.pillars.four { grid-template-columns: repeat(4, 1fr); }
.pillars .card { padding: 26px; }
.pillars h3 { font-size: 20px; font-weight: 500; letter-spacing: -.02em; margin: 18px 0 8px; }
.pillars p { color: var(--dim); margin: 0; font-size: 15px; }
.pillars .rule-n { display: block; }
.glyph { height: 64px; position: relative; }
.glyph span { position: absolute; border-radius: 10px; border: 1px solid var(--line-2); background: rgba(255, 255, 255, .03); }
.pillar-agents .glyph span:nth-child(1) { left: 0; top: 22px; width: 20px; height: 20px; border-radius: 50%; background: var(--v); border: 0; box-shadow: 0 0 20px var(--v); }
.pillar-agents .glyph span:nth-child(2) { left: 44px; top: 4px; width: 34px; height: 18px; }
.pillar-agents .glyph span:nth-child(3) { left: 44px; top: 42px; width: 52px; height: 18px; }
.pillar-trust .glyph span:nth-child(1) { left: 0; top: 4px; width: 120px; height: 56px; border-color: rgba(245, 181, 68, .5); background: rgba(245, 181, 68, .06); }
.pillar-trust .glyph span:nth-child(2) { left: 12px; top: 34px; width: 40px; height: 16px; background: var(--amber); border: 0; }
.pillar-trust .glyph span:nth-child(3) { left: 58px; top: 34px; width: 40px; height: 16px; }
.pillar-guard .glyph span:nth-child(1) { left: 0; top: 4px; width: 56px; height: 56px; border-radius: 16px 16px 28px 28px; border-color: rgba(74, 222, 128, .6); background: rgba(74, 222, 128, .07); }
.pillar-guard .glyph span:nth-child(2) { left: 18px; top: 26px; width: 10px; height: 16px; border: 0; border-bottom: 2px solid var(--green); border-right: 2px solid var(--green); border-radius: 0; transform: rotate(45deg); }
.pillar-guard .glyph span:nth-child(3) { display: none; }
@media (prefers-reduced-motion: no-preference) {
  .pillar-agents .glyph span:nth-child(1) { animation: orbit 3s ease-in-out infinite; }
  .pillar-trust .glyph span:nth-child(2) { animation: nudge 2.4s ease-in-out infinite; }
}
@keyframes orbit { 50% { transform: translateX(8px) scale(.9); } }
@keyframes nudge { 50% { box-shadow: 0 0 0 4px rgba(245, 181, 68, .25); } }

/* ---------- work cards ---------- */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.bento .work-card { grid-column: span 2; }
.bento .work-card.wide { grid-column: span 3; }
.grid-work { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.work-card { display: flex; flex-direction: column; text-decoration: none; overflow: hidden; transition: transform .35s var(--ease); }
.work-card:hover { transform: translateY(-4px); }
.work-card .viz { height: 170px; border-bottom: 1px solid var(--line); }
.work-card.wide .viz { height: 220px; }
.wc-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.wc-top { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.wc-top h3 { margin: 0; font-size: 22px; font-weight: 500; letter-spacing: -.02em; }
.status { font: 12px/1 var(--mono); color: var(--pc); white-space: nowrap; }
.wc-body p { margin: 0 0 6px; color: var(--dim); font-size: 15px; }
.wc-go { position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: rgba(6, 6, 8, .6); border: 1px solid var(--line); color: var(--ink); opacity: 0; transform: translate(-4px, 4px); transition: all .3s var(--ease); }
.work-card:hover .wc-go, .oss:hover .wc-go { opacity: 1; transform: none; }
.work-card[hidden] { display: none; }

/* ---------- project visuals (pure CSS) ---------- */
.viz { position: relative; overflow: hidden; background: radial-gradient(120% 90% at 50% 120%, color-mix(in srgb, var(--pc) 22%, transparent), transparent 60%), rgba(0, 0, 0, .25); display: flex; align-items: center; justify-content: center; gap: 6px; }
.viz i { display: block; flex: none; }
.viz-bars { align-items: flex-end; padding-bottom: 26px; }
.viz-bars i { width: 12px; border-radius: 4px 4px 0 0; background: var(--pc); opacity: .85; height: calc(20% + var(--h, 30%)); }
.viz-bars i:nth-child(1) { --h: 10%; } .viz-bars i:nth-child(2) { --h: 25%; } .viz-bars i:nth-child(3) { --h: 18%; } .viz-bars i:nth-child(4) { --h: 40%; } .viz-bars i:nth-child(5) { --h: 60%; background: #fff; } .viz-bars i:nth-child(6) { --h: 34%; } .viz-bars i:nth-child(7) { --h: 22%; } .viz-bars i:nth-child(8) { --h: 45%; } .viz-bars i:nth-child(9) { --h: 15%; }
.viz-film { gap: 10px; }
.viz-film i { width: 58px; height: 84px; border-radius: 8px; background: linear-gradient(180deg, color-mix(in srgb, var(--pc) 70%, #000), color-mix(in srgb, var(--pc) 25%, #000)); border: 1px solid rgba(255, 255, 255, .15); box-shadow: inset 0 -12px 0 rgba(0, 0, 0, .35); }
.viz-shield i { width: 96px; height: 110px; border-radius: 22px 22px 50px 50px; border: 2px solid var(--pc); background: color-mix(in srgb, var(--pc) 10%, transparent); box-shadow: 0 0 60px color-mix(in srgb, var(--pc) 35%, transparent); position: relative; }
.viz-shield i::after { content: ""; position: absolute; left: 36px; top: 34px; width: 18px; height: 34px; border-right: 3px solid var(--pc); border-bottom: 3px solid var(--pc); transform: rotate(45deg); }
.viz-chat { flex-direction: column; align-items: stretch; padding: 22px 28%; gap: 8px; }
.viz-chat i { height: 22px; border-radius: 12px; background: rgba(255, 255, 255, .08); width: 70%; }
.viz-chat i:nth-child(even) { align-self: flex-end; background: var(--pc); opacity: .85; width: 55%; }
.viz-eq { align-items: center; gap: 5px; }
.viz-eq i { width: 7px; border-radius: 4px; background: var(--pc); height: 30%; }
.viz-links { flex-direction: column; gap: 9px; }
.viz-links i { width: 52%; height: 22px; border-radius: 999px; border: 1px solid color-mix(in srgb, var(--pc) 60%, transparent); background: color-mix(in srgb, var(--pc) 12%, transparent); }
.viz-links i:first-child { background: var(--pc); }
.viz-wave { gap: 3px; }
.viz-wave i { width: 4px; border-radius: 3px; background: var(--pc); height: 20%; opacity: .9; }
.viz-pulse i { width: 90px; height: 90px; border-radius: 50%; border: 2px solid var(--pc); box-shadow: 0 0 0 0 color-mix(in srgb, var(--pc) 50%, transparent); }
@media (prefers-reduced-motion: no-preference) {
  .viz-bars i { animation: barUp 2.4s var(--ease) infinite alternate; animation-delay: calc(var(--h) * -6); transform-origin: bottom; }
  .viz-film { animation: slide 6s linear infinite; }
  .viz-eq i, .viz-wave i { animation: eq 1.1s ease-in-out infinite alternate; }
  .viz-chat i { animation: pop 4s var(--ease) infinite; }
  .viz-links i { animation: tick 3s steps(1) infinite; }
  .viz-pulse i { animation: ping 2.2s var(--ease) infinite; }
  .viz-shield i { animation: breathe 3.2s ease-in-out infinite; }
}
.viz-eq i:nth-child(3n) { animation-delay: -.3s; } .viz-eq i:nth-child(3n+1) { animation-delay: -.7s; } .viz-eq i:nth-child(4n) { animation-duration: .8s; } .viz-eq i:nth-child(5n) { animation-duration: 1.4s; }
.viz-wave i:nth-child(2n) { animation-delay: -.25s; } .viz-wave i:nth-child(3n) { animation-delay: -.6s; } .viz-wave i:nth-child(5n) { animation-delay: -.9s; }
.viz-chat i:nth-child(2) { animation-delay: .4s; } .viz-chat i:nth-child(3) { animation-delay: .8s; } .viz-chat i:nth-child(4) { animation-delay: 1.2s; }
.viz-links i:nth-child(2) { animation-delay: .75s; } .viz-links i:nth-child(3) { animation-delay: 1.5s; } .viz-links i:nth-child(4) { animation-delay: 2.25s; }
@keyframes barUp { from { transform: scaleY(.55); } }
@keyframes slide { from { transform: translateX(34px); } to { transform: translateX(-34px); } }
@keyframes eq { to { height: 85%; } }
@keyframes pop { 0%, 10% { opacity: 0; transform: translateY(8px); } 20%, 85% { opacity: 1; transform: none; } 100% { opacity: 0; } }
@keyframes tick { 0% { filter: brightness(2); } 25% { filter: none; } }
@keyframes ping { to { box-shadow: 0 0 0 40px transparent; } }
@keyframes breathe { 50% { box-shadow: 0 0 90px color-mix(in srgb, var(--pc) 50%, transparent); } }

/* ---------- MCP band ---------- */
.marquee { overflow: hidden; padding: 6px 0; -webkit-mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee-track { display: flex; gap: 10px; width: max-content; }
@media (prefers-reduced-motion: no-preference) { .marquee-track { animation: marq 60s linear infinite; } .marquee.rev .marquee-track { animation-direction: reverse; animation-duration: 70s; } .marquee:hover .marquee-track { animation-play-state: paused; } }
@keyframes marq { to { transform: translateX(-50%); } }
.tool-chip { display: inline-flex; align-items: center; gap: 8px; font: 14px/1 var(--mono); padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); white-space: nowrap; }
.tool-chip i { width: 7px; height: 7px; border-radius: 50%; background: var(--pc); box-shadow: 0 0 10px var(--pc); }
.tool-chip small { color: var(--mute); font-size: 12px; }
.server-row { list-style: none; padding: 0; margin: 28px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.server-pill { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; padding: 10px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); font-size: 15px; transition: border-color .2s; }
.server-pill:hover { border-color: var(--pc); }
.server-pill i { width: 8px; height: 8px; border-radius: 50%; background: var(--pc); }
.server-pill small { font: 12px/1 var(--mono); color: var(--mute); }

/* ---------- rules ---------- */
.rules { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.rules li { display: flex; gap: 16px; padding: 26px; background: rgba(8, 8, 11, .82); backdrop-filter: blur(12px); }
.rule-n { font: 12px/1.9 var(--mono); color: var(--c); flex: none; }
.rules h3 { margin: 0 0 6px; font-size: 18px; font-weight: 500; letter-spacing: -.01em; }
.rules p { margin: 0; color: var(--dim); font-size: 15px; }

/* ---------- games teaser ---------- */
.games-teaser { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 32px; padding: clamp(24px, 4vw, 48px); overflow: hidden; align-items: center; }
.gt-copy .btn { margin-top: 26px; }
.gt-strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; transform: rotate(-6deg) scale(1.08); }
.gt-tile { position: relative; display: block; border-radius: 12px; overflow: hidden; border: 1px solid var(--line-2); aspect-ratio: 3 / 4.6; transform: translateY(calc(var(--i) * 14px - 28px)); transition: transform .4s var(--ease); }
.gt-tile img { width: 100%; height: 100%; object-fit: cover; image-rendering: pixelated; }
.gt-tile span { position: absolute; left: 0; right: 0; bottom: 0; padding: 30px 8px 8px; font: 500 11px/1.2 var(--mono); background: linear-gradient(transparent, rgba(0, 0, 0, .85)); }
.gt-tile::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 2px var(--pc); opacity: 0; transition: opacity .3s; border-radius: inherit; }
.gt-tile:hover { transform: translateY(calc(var(--i) * 14px - 40px)); }
.gt-tile:hover::after { opacity: 1; }

/* ---------- ask ---------- */
.ask { overflow: hidden; max-width: 920px; }
.ask-bar { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 14px 18px; border-bottom: 1px solid var(--line); font: 12px/1.4 var(--mono); color: var(--mute); }
.ask-name { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); }
.ask-name i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); }
.ask-log { padding: 20px 18px 8px; min-height: 140px; max-height: 480px; overflow-y: auto; }
.ask-empty { color: var(--mute); margin: 0; }
.msg { margin: 0 0 20px; }
.msg-q { display: inline-block; background: #25253a; border-radius: 14px 14px 4px 14px; padding: 8px 12px; margin: 0 0 10px; }
.msg-a { margin: 0 0 10px; font-size: 16px; max-width: 70ch; }
.msg.refused .msg-a { color: #fecaca; }
.badge { display: inline-flex; align-items: center; gap: 6px; font: 12px/1 var(--mono); border-radius: 999px; padding: 6px 9px; margin: 0 0 10px; }
.badge.no { color: #fecaca; background: rgba(255, 107, 117, .08); border: 1px solid rgba(255, 107, 117, .35); }
.srcs { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 0 0 8px; font: 12px/1 var(--mono); color: var(--mute); }
.srcs a { color: #a5f3fc; text-decoration: none; border: 1px solid rgba(34, 211, 238, .35); background: rgba(34, 211, 238, .06); padding: 6px 9px; border-radius: 999px; }
.srcs a:hover { background: rgba(34, 211, 238, .14); }
.ask-checks { display: flex; flex-wrap: wrap; gap: 4px 12px; font: 12px/1.4 var(--mono); color: var(--mute); }
.ask-checks .ok::before { content: "✓ "; color: var(--green); }
.msg-note { font: 12px/1.4 var(--mono); color: var(--mute); margin: 6px 0 0; }
.help { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.dots::after { content: ""; animation: dots 1.2s steps(4) infinite; }
@keyframes dots { 25% { content: "."; } 50% { content: ".."; } 75% { content: "..."; } }
.ask-chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 4px 18px 14px; }
.ask-form { display: flex; gap: 8px; padding: 12px 12px 12px 18px; border-top: 1px solid var(--line); }
.ask-form input { flex: 1; min-width: 0; background: transparent; border: 0; color: var(--ink); font: 16px/1.4 var(--sans); }
.ask-form input::placeholder { color: var(--mute); }
.ask-form input:focus { outline: none; }
.ask-meter { display: flex; flex-wrap: wrap; gap: 6px 20px; padding: 11px 18px; border-top: 1px solid var(--line); font: 12px/1 var(--mono); color: var(--mute); }
.ask-meter b { color: var(--ink); font-weight: 500; }

/* ---------- more cards ---------- */
.more { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.more-card { display: flex; flex-direction: column; gap: 10px; padding: 24px; text-decoration: none; transition: transform .35s var(--ease); }
.more-card:hover { transform: translateY(-4px); }
.more-card h3 { margin: 10px 0 0; font-size: 20px; font-weight: 500; letter-spacing: -.02em; }
.more-card p { margin: 0 0 10px; color: var(--dim); font-size: 15px; flex: 1; }
.more-card .link-arrow { align-self: flex-start; }
.more-card .viz { height: 96px; border-radius: 12px; }
.mini-books { display: flex; gap: 8px; height: 96px; align-items: flex-end; }
.mini-books span { width: 46px; height: 88%; border-radius: 4px 8px 8px 4px; background: linear-gradient(90deg, rgba(0, 0, 0, .35) 0 6px, transparent 6px), var(--pc); transition: transform .4s var(--ease); }
.mini-books span:nth-child(2) { height: 100%; } .mini-books span:nth-child(3) { height: 80%; }
.more-card:hover .mini-books span:nth-child(2) { transform: translateY(-8px) rotate(-3deg); }
.mini-teach { height: 96px; position: relative; }
.mini-teach span { position: absolute; border-radius: 12px; border: 1px solid var(--line-2); background: rgba(255, 255, 255, .03); }
.mini-teach span:nth-child(1) { inset: 0 40% 30% 0; background: linear-gradient(135deg, rgba(250, 204, 21, .3), transparent); }
.mini-teach span:nth-child(2) { inset: 30% 10% 0 30%; background: linear-gradient(135deg, rgba(139, 92, 246, .3), transparent); }
.mini-teach span:nth-child(3) { width: 34px; height: 34px; border-radius: 50%; right: 0; top: 0; background: var(--amber); border: 0; }
.mini-oss { height: 96px; display: flex; flex-direction: column; justify-content: center; gap: 6px; }
.mini-oss code { font: 12px/1 var(--mono); color: var(--dim); background: rgba(0, 0, 0, .3); border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mini-oss code::before { content: "$ "; color: var(--green); }
.mini-pixel { height: 96px; display: grid; grid-template-columns: repeat(8, 1fr); gap: 3px; image-rendering: pixelated; }
.mini-pixel i { background: #1d1238; border-radius: 2px; }
.mini-pixel i:nth-child(3n) { background: #ff3d7f; } .mini-pixel i:nth-child(5n) { background: #ffd23d; } .mini-pixel i:nth-child(7n) { background: #29d3ff; }

/* ---------- work page ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filter { font: 500 14px/1 var(--sans); padding: 11px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--dim); cursor: pointer; transition: all .2s; }
.filter:hover { color: var(--ink); }
.filter[aria-selected="true"] { background: var(--ink); color: var(--bg); border-color: transparent; }
.oss-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.oss { display: block; height: 100%; padding: 22px; text-decoration: none; }
.oss code { font: 500 16px/1 var(--mono); color: var(--ink); }
.oss p { margin: 10px 0 0; color: var(--dim); font-size: 15px; }
.fame { list-style: none; padding: 0; margin: 0 0 28px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.fame li { display: grid; grid-template-columns: 150px 1fr; gap: 16px; padding: 22px; background: rgba(8, 8, 11, .82); }
.fame strong { font-weight: 500; }
.fame span { color: var(--dim); font-size: 15px; }
[data-cat-section][hidden] { display: none; }

/* ---------- case ---------- */
.case-hero { padding-top: clamp(40px, 7vw, 96px); }
.crumbs { display: flex; gap: 10px; font: 13px/1 var(--mono); color: var(--mute); margin-bottom: 28px; }
.crumbs a { color: var(--dim); text-decoration: none; }
.crumbs a:hover { color: var(--ink); }
.case-title { font-size: clamp(52px, 9vw, 132px); max-width: none; letter-spacing: -.055em; }
.case-title .word:last-child { color: var(--pc); }
.case-one { color: var(--ink); max-width: 36ch; font-size: clamp(20px, 2vw, 26px); letter-spacing: -.01em; }
.case-meta { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin: 0 0 20px; }
.case-meta div { padding: 16px 18px; background: rgba(8, 8, 11, .8); }
.case-meta dt { font: 12px/1 var(--mono); color: var(--mute); margin-bottom: 8px; text-transform: uppercase; letter-spacing: .1em; }
.case-meta dd { margin: 0; font-size: 15px; }
.case-meta a { color: var(--pc); text-decoration: none; }
.case-visual { overflow: hidden; }
.case-visual .viz { height: clamp(220px, 34vw, 420px); }
.case-visual .viz-bars i { width: 26px; } .case-visual .viz-film i { width: 110px; height: 160px; } .case-visual .viz-eq i, .case-visual .viz-wave i { width: 10px; }
.case-body { padding-top: clamp(56px, 8vw, 110px); }
.case-row { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 32px; padding: 32px 0; border-top: 1px solid var(--line); }
.case-label { display: flex; gap: 12px; font: 500 13px/1.6 var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .1em; margin: 0; }
.case-label span { color: var(--pc); }
.case-text { margin: 0; font-size: 18px; color: var(--dim); max-width: 62ch; }
.case-text.big { font-size: clamp(20px, 2vw, 26px); color: var(--ink); letter-spacing: -.01em; line-height: 1.4; }
.case-quote { margin: 0; font-family: var(--serif); font-size: clamp(24px, 2.6vw, 34px); line-height: 1.3; letter-spacing: -.01em; padding-left: 22px; border-left: 2px solid var(--pc); max-width: 34ch; }
.receipts { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.receipts li { position: relative; padding: 14px 16px 14px 44px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); }
.receipts li::before { content: "✓"; position: absolute; left: 16px; top: 14px; color: var(--pc); font-weight: 600; }
.tool-list { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.tool-list code { display: inline-block; font: 13px/1 var(--mono); padding: 7px 9px; border-radius: 8px; background: rgba(0, 0, 0, .3); border: 1px solid var(--line); color: var(--ink); }
.case-cta { padding: 32px 0 0 292px; border-top: 1px solid var(--line); }
.next-case { display: grid; grid-template-columns: 1fr auto; gap: 6px 24px; padding: clamp(24px, 4vw, 44px); text-decoration: none; margin-top: clamp(48px, 6vw, 80px); }
.next-case .eyebrow { grid-column: 1 / -1; margin: 0; }
.nc-name { font-size: clamp(34px, 5vw, 64px); font-weight: 500; letter-spacing: -.04em; line-height: 1; }
.nc-one { color: var(--dim); grid-column: 1; }
.nc-go { grid-row: 2 / span 2; grid-column: 2; align-self: center; width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; font-size: 24px; background: var(--pc); color: #0a0a0c; transition: transform .35s var(--ease); }
.next-case:hover .nc-go { transform: translateX(6px); }

/* ---------- mcp page ---------- */
.servers { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.server { padding: 24px; display: flex; flex-direction: column; gap: 16px; scroll-margin-top: 100px; }
.server-head { display: flex; align-items: center; gap: 14px; }
.server-head h2 { margin: 0; font-size: 22px; font-weight: 500; letter-spacing: -.02em; }
.server-head p { margin: 2px 0 0; font-size: 13px; }
.server-mark { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: color-mix(in srgb, var(--pc) 14%, transparent); border: 1px solid color-mix(in srgb, var(--pc) 45%, transparent); flex: none; }
.server-mark i { width: 12px; height: 12px; border-radius: 50%; background: var(--pc); box-shadow: 0 0 16px var(--pc); }
.server-count { margin-left: auto; font: 12px/1 var(--mono); color: var(--pc); white-space: nowrap; }
.server-d { margin: 0; color: var(--dim); }
.console { border-radius: 12px; background: rgba(0, 0, 0, .35); border: 1px solid var(--line); padding: 12px; flex: 1; }
.console-bar { display: flex; justify-content: space-between; font: 12px/1 var(--mono); color: var(--mute); padding-bottom: 10px; border-bottom: 1px dashed var(--line); }
.console-bar .ok { color: var(--green); }
.server .link-arrow { align-self: flex-start; }
.server:target { box-shadow: 0 0 0 2px var(--pc); }

/* ---------- games page (game-menu energy, same system) ---------- */
.games { position: relative; overflow: hidden; padding: clamp(40px, 7vw, 90px) 0 20px; }
.games-bg { position: absolute; inset: 0; pointer-events: none; z-index: -1; }
.games-bg .slash { position: absolute; top: -20%; left: 40%; width: 18%; height: 140%; background: var(--pc); opacity: .07; transform: skewX(-16deg); transition: background .5s; }
.games-bg .slash.thin { left: 46%; width: 2%; opacity: .3; }
.bgword { position: absolute; right: -2vw; bottom: -4vw; font: 600 26vw/.8 var(--sans); letter-spacing: -.07em; color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, .07); white-space: nowrap; }
.games-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(28px, 5vw, 64px); align-items: center; min-height: 72vh; }
.games-intro { color: var(--dim); max-width: 42ch; margin: 0 0 28px; }
.games-select { font: 12px/1 var(--mono); color: var(--mute); letter-spacing: .14em; text-transform: uppercase; margin: 0 0 10px; }
.menu-list { list-style: none; margin: 0; padding: 0; }
.menu-list button { position: relative; display: flex; align-items: baseline; gap: 14px; width: 100%; text-align: left; background: none; border: 0; padding: 4px 0; cursor: pointer; font: 600 clamp(32px, 4.6vw, 64px)/1.05 var(--sans); letter-spacing: -.045em; color: rgba(237, 237, 242, .2); transition: color .25s, transform .35s var(--ease); }
.menu-list .mn { font: 12px/1 var(--mono); letter-spacing: 0; color: var(--mute); transform: translateY(-.6em); }
.menu-list button:hover { color: rgba(237, 237, 242, .5); }
.menu-list button[aria-selected="true"] { color: var(--ink); transform: translateX(18px); }
.menu-list button[aria-selected="true"] .mn { color: var(--pc); }
.menu-list button[aria-selected="true"]::before { content: ""; position: absolute; left: -18px; top: 22%; bottom: 18%; width: 4px; border-radius: 4px; background: var(--pc); box-shadow: 0 0 20px var(--pc); }
.games-keys { margin-top: 24px; color: var(--mute); font-size: 13px; }
.game-card { border-radius: var(--r); overflow: hidden; background: var(--surface); border: 1px solid var(--line); backdrop-filter: blur(18px); box-shadow: 0 0 0 1px color-mix(in srgb, var(--pc) 30%, transparent), 0 40px 100px rgba(0, 0, 0, .5); transition: transform .5s var(--ease); }
.game-card:not([hidden]) { animation: enter .5s var(--ease) both; }
@keyframes enter { from { opacity: 0; transform: translateX(30px); filter: blur(6px); } }
.game-shot { aspect-ratio: 315 / 200; overflow: hidden; background: #000; }
.game-shot img { width: 100%; height: 100%; object-fit: cover; image-rendering: pixelated; }
.game-body { padding: 24px; }
.game-genre { font: 12px/1 var(--mono); color: var(--pc); text-transform: uppercase; letter-spacing: .12em; margin: 0 0 10px; }
.game-body h2 { font-size: clamp(28px, 3vw, 40px); font-weight: 500; letter-spacing: -.035em; margin: 0 0 10px; }
.game-body p { color: var(--dim); margin: 0 0 20px; }

/* ---------- books ---------- */
.shelf { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 22px 16px; }
.shelf.featured { grid-template-columns: repeat(4, 1fr); }
.book { display: flex; flex-direction: column; gap: 10px; text-decoration: none; }
.cover { position: relative; aspect-ratio: 2 / 3; border-radius: 6px 12px 12px 6px; padding: 16px 14px 14px 20px; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; background: radial-gradient(120% 80% at 100% 0%, color-mix(in srgb, var(--pc) 45%, transparent), transparent 60%), linear-gradient(160deg, #1a1a24, #0d0d13); border: 1px solid var(--line-2); box-shadow: inset 6px 0 0 rgba(0, 0, 0, .35), 0 20px 40px rgba(0, 0, 0, .4); transition: transform .45s var(--ease), box-shadow .45s; }
.cover::before { content: ""; position: absolute; left: 6px; top: 0; bottom: 0; width: 1px; background: rgba(255, 255, 255, .12); }
.cover-top { font: 10px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); }
.cover-title { font: 500 17px/1.15 var(--sans); letter-spacing: -.02em; color: #fff; }
.shelf.featured .cover-title { font-size: clamp(18px, 1.8vw, 24px); }
.cover-mark { width: 26px; height: 4px; border-radius: 4px; background: var(--pc); }
.book:hover .cover { transform: translateY(-8px) rotate(-1.5deg); box-shadow: inset 6px 0 0 rgba(0, 0, 0, .35), 0 30px 60px rgba(0, 0, 0, .5), 0 0 0 1px var(--pc); }
.book-t { font-size: 14px; line-height: 1.35; }
.book-l { font: 12px/1 var(--mono); color: var(--mute); }
.book-code { display: inline-block; margin-top: 6px; font: 12px/1 var(--mono); color: var(--c); text-decoration: none; }

/* ---------- teaching ---------- */
.academy { display: grid; grid-template-columns: auto 1fr auto; gap: 24px; align-items: center; padding: clamp(22px, 3vw, 32px); text-decoration: none; --pc: #facc15; }
.academy p { margin: 6px 0 0; color: var(--dim); }
.academy-mark { width: 64px; height: 64px; border-radius: 16px; display: grid; place-items: center; font: 600 20px/1 var(--mono); color: #1a1205; background: #facc15; box-shadow: 0 0 40px rgba(250, 204, 21, .35); }
.plans { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.plan { padding: clamp(22px, 3vw, 32px); display: flex; flex-direction: column; gap: 14px; }
.plan.hl { --pc: var(--c); border-color: rgba(34, 211, 238, .35); box-shadow: 0 0 0 1px rgba(34, 211, 238, .15), 0 30px 80px rgba(34, 211, 238, .08); }
.plan-name { margin: 0; font: 500 13px/1 var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .12em; }
.plan-price { margin: 0; font-size: clamp(34px, 4vw, 48px); font-weight: 500; letter-spacing: -.04em; line-height: 1; }
.plan-price small { font-size: 14px; color: var(--mute); letter-spacing: 0; font-weight: 400; }
.checks { list-style: none; padding: 0; margin: 0 0 8px; display: grid; gap: 8px; flex: 1; }
.checks li { position: relative; padding-left: 26px; color: var(--dim); }
.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--green); }
.not { margin-top: 20px; padding: 22px 0 0; border-top: 1px solid var(--line); display: grid; gap: 10px; }
.not ul { margin: 0 0 8px; padding-left: 18px; color: var(--dim); }
.not .link-arrow { justify-self: start; }
.talks { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end; padding: clamp(24px, 4vw, 44px); }

/* ---------- résumé ---------- */
.resume { padding-top: 32px; max-width: 920px; }
.resume-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.back { border: 0; color: var(--dim); }
.doc { padding: clamp(24px, 5vw, 56px); }
.doc-head h1 { font-size: clamp(34px, 4.4vw, 52px); font-weight: 500; letter-spacing: -.04em; margin: 0; line-height: 1; }
.doc-role { font-size: 18px; color: var(--dim); margin: 10px 0 14px; }
.doc-contact { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 0; font: 13px/1.4 var(--mono); color: var(--mute); }
.doc-contact a { color: var(--c); text-decoration: none; }
.doc-body h2 { font: 500 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--c); margin: 44px 0 16px; padding-top: 20px; border-top: 1px solid var(--line); }
.doc-body p { margin: 0 0 14px; color: var(--dim); }
.doc-body p.job { color: var(--ink); margin-top: 24px; }
.doc-body strong { color: var(--ink); font-weight: 500; }
.doc-body ul { margin: 0 0 12px; padding-left: 18px; color: var(--dim); }
.doc-body li { margin-bottom: 8px; }
.doc-body a { color: var(--c); }

/* ---------- 404 ---------- */
.nf { min-height: 60vh; }

/* ---------- footer ---------- */
.foot { margin-top: clamp(100px, 14vw, 180px); padding: clamp(56px, 8vw, 100px) 0 32px; border-top: 1px solid var(--line); background: linear-gradient(180deg, rgba(6, 6, 8, 0), rgba(6, 6, 8, .85) 30%); }
.foot-big { font-weight: 500; font-size: clamp(40px, 7vw, 104px); line-height: .98; letter-spacing: -.05em; margin: 0 0 22px; max-width: 14ch; }
.foot-line { color: var(--dim); max-width: 50ch; margin: 0 0 30px; font-size: 17px; }
.foot-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: clamp(56px, 8vw, 96px); }
.copy { font-family: var(--mono); font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; padding: 28px 0; border-top: 1px solid var(--line); }
.foot-grid nav { display: flex; flex-direction: column; gap: 8px; }
.foot-grid nav a { text-decoration: none; color: var(--dim); font-size: 15px; }
.foot-grid nav a:hover { color: var(--ink); }
.foot-h { margin: 0 0 4px; font-weight: 500; }
.foot-d { margin: 0; color: var(--mute); font-size: 14px; }
.foot-base { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13px; color: var(--mute); }
.egg { color: var(--mute); text-decoration: none; border-bottom: 1px dashed var(--line-2); }
.egg:hover { color: #ffd23d; border-color: #ffd23d; }

/* ---------- palette ---------- */
.palette { position: fixed; inset: 0; z-index: 150; display: grid; place-items: start center; padding: 12vh 16px 16px; background: rgba(4, 4, 6, .6); backdrop-filter: blur(6px); }
.palette[hidden] { display: none; }
.palette-box { width: min(640px, 100%); border-radius: 18px; background: rgba(18, 18, 25, .95); border: 1px solid var(--line-2); box-shadow: 0 40px 120px rgba(0, 0, 0, .7); overflow: hidden; animation: pal .22s var(--ease); }
@keyframes pal { from { opacity: 0; transform: translateY(-8px) scale(.98); } }
.palette-in { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--line); color: var(--mute); }
.palette-in input { flex: 1; min-width: 0; background: transparent; border: 0; color: var(--ink); font: 17px/1.4 var(--sans); }
.palette-in input:focus { outline: none; }
.palette-list { list-style: none; margin: 0; padding: 8px; max-height: 50vh; overflow-y: auto; }
.palette-list .grp { font: 11px/1 var(--mono); color: var(--mute); text-transform: uppercase; letter-spacing: .12em; padding: 12px 10px 6px; }
.palette-list a, .palette-list button { display: flex; align-items: center; gap: 12px; width: 100%; text-align: left; padding: 10px 12px; border-radius: 10px; text-decoration: none; background: none; border: 0; cursor: pointer; color: var(--ink); }
.palette-list .sel { background: rgba(255, 255, 255, .07); }
.palette-list small { color: var(--mute); margin-left: auto; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 55%; }
.palette-list .ask-row { color: #a5f3fc; }
.palette-hint { padding: 8px 12px 4px; color: var(--mute); font-size: 13px; }
.palette-answer { padding: 14px 18px; border-top: 1px solid var(--line); }
.palette-keys { margin: 0; padding: 10px 18px; border-top: 1px solid var(--line); font: 12px/1 var(--mono); color: var(--mute); }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .hero { grid-template-columns: 1fr; min-height: 0; padding-top: 40px; }
  .hero-stage { max-width: 640px; }
  .win { transform: none !important; }
  .f2 { left: 12px; }
  .pillars.four { grid-template-columns: repeat(2, 1fr); }
  .rules { grid-template-columns: repeat(2, 1fr); }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento .work-card, .bento .work-card.wide { grid-column: span 1; }
  .grid-work, .oss-list { grid-template-columns: repeat(2, 1fr); }
  .games-teaser { grid-template-columns: 1fr; }
  .gt-strip { transform: none; }
  .gt-tile { transform: none !important; }
  .case-row { grid-template-columns: 200px minmax(0, 1fr); }
  .case-cta { padding-left: 232px; }
  .case-meta { grid-template-columns: repeat(2, 1fr); }
  .shelf.featured { grid-template-columns: repeat(2, 1fr); }
  .games-grid { grid-template-columns: 1fr; min-height: 0; }
}
@media (max-width: 720px) {
  .pillars, .pillars.four, .rules, .bento, .grid-work, .oss-list, .more, .servers, .plans, .fame { grid-template-columns: 1fr; }
  .fame li { grid-template-columns: 1fr; gap: 6px; }
  .win-feed { height: 440px; padding: 14px; }
  .float { display: none; }
  .gt-strip { grid-template-columns: repeat(5, 1fr); gap: 6px; }
  .case-row { grid-template-columns: 1fr; gap: 14px; padding: 26px 0; }
  .case-cta { padding-left: 0; }
  .case-meta { grid-template-columns: 1fr 1fr; }
  .next-case { grid-template-columns: 1fr; }
  .nc-go { grid-row: auto; grid-column: 1; width: 52px; height: 52px; }
  .academy, .talks { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-grid > div { grid-column: 1 / -1; }
  .shelf { grid-template-columns: repeat(2, 1fr); }
  .menu-list button[aria-selected="true"] { transform: translateX(14px); }
  .proof { gap: 14px 24px; }
  .work-card.wide .viz { height: 170px; }
}

/* ---------- print (résumé) ---------- */
@media print {
  :root { --ink: #111; --dim: #333; --mute: #555; --c: #0b5d73; --line: #ddd; }
  body { background: #fff; color: #111; }
  body::before, #field, .vignette, .grain, .progress, .top, .sheet, .foot, .palette, .resume-bar, .skip { display: none !important; }
  .card { background: none; border: 0; box-shadow: none; backdrop-filter: none; }
  .doc { padding: 0; }
  .js .reveal { opacity: 1 !important; transform: none !important; filter: none !important; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .js .reveal, .js .split .word { opacity: 1; transform: none; filter: none; }
}

/* ---------- offer (mentoring) ---------- */
.offer { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(20px, 4vw, 56px); align-items: center; }
.offer .plan { gap: 16px; }
.offer-side .sec-sub { margin-bottom: 22px; }
.talks .sec-sub a, .offer-side a:not(.link-arrow) { color: var(--c); }

/* ---------- legal ---------- */
.legal-tabs { margin-top: 8px; }
a.filter { text-decoration: none; }
a.filter[aria-current] { background: var(--ink); color: var(--bg); border-color: transparent; }
.legal-grid { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 32px; align-items: start; }
.legal-toc { position: sticky; top: 96px; display: flex; flex-direction: column; gap: 4px; }
.legal-toc a { color: var(--dim); text-decoration: none; font-size: 14px; padding: 6px 10px; border-left: 1px solid var(--line); }
.legal-toc a:hover { color: var(--ink); border-color: var(--c); }
.legal .doc-body section { scroll-margin-top: 100px; }
.legal .doc-body section:first-child h2 { margin-top: 0; padding-top: 0; border-top: 0; }
.foot-legal { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.foot-legal a { color: var(--mute); text-decoration: none; }
.foot-legal a:hover { color: var(--ink); }
@media (max-width: 1080px) { .offer { grid-template-columns: 1fr; } }
@media (max-width: 720px) { .legal-grid { grid-template-columns: 1fr; } .legal-toc { display: none; } }