/* ── ACR Labs Design System — Unified Portfolio Styles ── */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,100..900;1,9..144,100..900&family=Source+Serif+4:ital,opsz,wght@0,8..60,200..900;1,8..60,200..900&family=Space+Mono:wght@400;700&display=swap');

/* ── DESIGN TOKENS ── */
:root {
  /* Surfaces */
  --bg:        #0f1419;
  --bg2:       #141a20;
  --bg3:       #0a0e12;
  --night:     #050508;
  --bg-night:  #050508;
  --border:    rgba(245,245,245,0.1);
  --border-sub:    rgba(245,245,245,0.05);
  --border-subtle: rgba(245,245,245,0.05);

  /* Text */
  --text:      #f5f5f5;
  --text-sec:  #e0e0e0;
  --muted:     #a0a0a0;
  --faded:     #666666;

  /* Accent — vermillion */
  --accent:       #e63946;
  --accent-hv:    #c1121f;
  --accent-dim:   rgba(230,57,70,0.12);
  --accent-glow:  rgba(230,57,70,0.06);
  /* aliases for index.html */
  --amber:        #e63946;
  --amber-dark:   #c1121f;
  --amber-dim:    rgba(230,57,70,0.15);
  --amber-glow:   rgba(230,57,70,0.08);

  /* Typography */
  --fd:           'Fraunces', Georgia, serif;
  --fb:           'Source Serif 4', Georgia, serif;
  --fm:           'Space Mono', monospace;
  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'Source Serif 4', Georgia, serif;
  --font-mono:    'Space Mono', monospace;

  /* Radius */
  --r:         0.5rem;
  --rx:        0.75rem;
  --radius:    0.25rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* Motion */
  --ease:      cubic-bezier(.16,1,.3,1);
  --ease-expo: cubic-bezier(.16,1,.3,1);
  --ease-std:  cubic-bezier(.4,0,.2,1);
  --dur:       150ms;
}

/* ── RESET ── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--fb);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ── SCROLL REVEAL (shared) ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }
/* index delay classes */
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.4s; }
/* cs delay classes */
.rd1 { transition-delay: .1s; }
.rd2 { transition-delay: .2s; }
.rd3 { transition-delay: .3s; }
.rd4 { transition-delay: .4s; }

/* ──────────────────────────────────────────────────────────
   CASE STUDY STYLES  (body.page-cs)
   ────────────────────────────────────────────────────────── */

/* ── SIDEBAR ── */
#sidebar {
  position: fixed; top: 0; left: 0; bottom: 0; width: 56px;
  background: var(--bg3); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; align-items: center;
  z-index: 100; padding: 28px 0;
}
.sb-back {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border: 1px solid var(--border);
  border-radius: var(--r); color: var(--muted);
  text-decoration: none; transition: color .15s, border-color .15s;
  margin-bottom: 32px; flex-shrink: 0;
}
.sb-back:hover { color: var(--text); border-color: rgba(245,245,245,0.2); }
.sb-back svg { transition: transform .15s var(--ease); }
.sb-back:hover svg { transform: translateX(-2px); }
.sb-chapters {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; gap: 6px; padding: 4px 0;
}
.sb-ch {
  position: relative; display: flex; align-items: center;
  justify-content: center; width: 28px; height: 28px;
  cursor: pointer; text-decoration: none;
}
.sb-dot {
  width: 6px; height: 6px; border-radius: 50%;
  border: 1px solid rgba(245,245,245,0.25); flex-shrink: 0;
  transition: background .2s, border-color .2s, transform .2s;
}
.sb-ch:hover .sb-dot { border-color: rgba(245,245,245,0.5); transform: scale(1.3); }
.sb-ch.active .sb-dot { background: var(--accent); border-color: var(--accent); transform: scale(1.15); }
.sb-ch-name {
  position: absolute; left: calc(100% + 14px); top: 50%;
  transform: translateY(-50%);
  font-family: var(--fm); font-size: 10px; letter-spacing: .1em;
  color: var(--text); background: var(--bg2); border: 1px solid var(--border);
  border-radius: 4px; padding: 5px 10px; white-space: nowrap;
  opacity: 0; transition: opacity .15s; pointer-events: none;
}
.sb-ch:hover .sb-ch-name { opacity: 1; }
.sb-progress-wrap { width: 100%; margin-top: 20px; display: flex; justify-content: center; }
.sb-progress-track { width: 2px; height: 48px; background: var(--border); border-radius: 1px; }
.sb-progress-fill { width: 100%; background: var(--accent); border-radius: 1px; height: 0%; transition: height .15s; }

/* ── CS LAYOUT ── */
#main { margin-left: 56px; }

/* ── CS HERO ── */
body.page-cs #hero {
  min-height: 100vh; display: flex; flex-direction: column;
  justify-content: flex-end; background: var(--night);
  position: relative; overflow: hidden; padding: 0 80px 80px;
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(90deg, var(--border-sub) 0, var(--border-sub) 1px, transparent 1px, transparent 200px);
}
.hero-num {
  position: absolute; font-family: var(--fd);
  font-size: clamp(280px,38vw,580px); font-weight: 800; line-height: 1;
  color: rgba(245,245,245,0.018); right: -3%; bottom: -8%;
  pointer-events: none; letter-spacing: -0.06em;
}
.hero-content { position: relative; z-index: 2; max-width: 900px; }
body.page-cs .hero-eyebrow {
  display: flex; align-items: center; gap: 16px; margin-bottom: 48px;
  /* override index animation styles */
  opacity: 1; transform: none; animation: none; font-family: unset; font-size: unset;
  letter-spacing: unset; color: unset; text-transform: unset;
}
.hero-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.hero-label {
  font-family: var(--fm); font-size: 11px; letter-spacing: .2em;
  color: var(--accent); text-transform: uppercase;
}
.hero-h {
  font-family: var(--fd); font-size: clamp(56px,8vw,116px); font-weight: 300;
  line-height: .93; letter-spacing: -.035em; margin-bottom: 56px;
}
.hero-h em { font-style: italic; color: var(--accent); }
.hero-stats {
  display: flex; gap: 56px; padding-top: 40px;
  border-top: 1px solid var(--border); flex-wrap: wrap;
}
.hs { display: flex; flex-direction: column; gap: 6px; }
.hs-n {
  font-family: var(--fd); font-size: clamp(36px,4.5vw,56px);
  font-weight: 300; letter-spacing: -.025em; line-height: 1;
}
.hs-n span { color: var(--accent); }
.hs-l {
  font-family: var(--fm); font-size: 10px; letter-spacing: .14em;
  color: var(--muted); text-transform: uppercase;
}

/* ── CS SECTIONS ── */
.section { padding: 160px 80px; border-bottom: 1px solid var(--border); position: relative; overflow: hidden; }
.section.bg2 { background: var(--bg2); }
.section.bg3 { background: var(--bg3); }
.section.night { background: var(--night); }
.container { max-width: 920px; margin: 0 auto; }
.container-wide { max-width: 1100px; margin: 0 auto; }

/* Chapter header */
.ch-num-large {
  position: absolute; font-family: var(--fd);
  font-size: clamp(100px,14vw,180px); font-weight: 800; line-height: 1;
  letter-spacing: -.05em; color: rgba(245,245,245,0.05);
  right: 48px; top: 48px; pointer-events: none;
}
.ch-super { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.ch-label { font-family: var(--fm); font-size: 10px; letter-spacing: .2em; color: var(--accent); text-transform: uppercase; }
.ch-label-m { font-family: var(--fm); font-size: 10px; letter-spacing: .2em; color: var(--muted); text-transform: uppercase; }
.ch-divider { flex: 1; max-width: 48px; height: 1px; background: var(--border); }
.ch-h {
  font-family: var(--fd); font-size: clamp(30px,4vw,50px); font-weight: 400;
  letter-spacing: -.025em; line-height: 1.1; max-width: 700px;
}
.ch-h em { font-style: italic; color: var(--accent); }
.ch-body { font-family: var(--fb); font-size: 17px; line-height: 1.85; color: var(--muted); max-width: 600px; margin-top: 24px; }
.ch-body strong { color: var(--text); font-weight: 500; }
.ch-header { margin-bottom: 80px; }

/* ── GRID LAYOUTS ── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.three-col {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border);
  border-radius: var(--rx); overflow: hidden;
}
.four-col {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border);
  border-radius: var(--rx); overflow: hidden;
}

/* ── CARDS ── */
.card { background: var(--bg2); padding: 40px 32px; display: flex; flex-direction: column; gap: 14px; transition: background .2s; }
.card:hover { background: var(--bg3); }
.card-n { font-family: var(--fm); font-size: 10px; letter-spacing: .18em; color: var(--accent); text-transform: uppercase; }
.card-title { font-family: var(--fd); font-size: 20px; font-weight: 400; letter-spacing: -.02em; line-height: 1.2; }
.card-body { font-family: var(--fb); font-size: 14px; line-height: 1.75; color: var(--muted); }

/* ── STAT CARDS ── */
.stat-card { background: var(--bg2); padding: 40px 32px; }
.stat-n { font-family: var(--fd); font-size: clamp(44px,5.5vw,68px); font-weight: 300; letter-spacing: -.03em; line-height: 1; margin-bottom: 8px; }
.stat-n span { color: var(--accent); }
.stat-l { font-family: var(--fm); font-size: 10px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; margin-bottom: 6px; }
.stat-d { font-family: var(--fb); font-size: 13px; color: var(--faded); line-height: 1.55; }

/* ── META TABLE ── */
.meta-table { border: 1px solid var(--border); border-radius: var(--rx); overflow: hidden; }
.meta-r { display: grid; grid-template-columns: 110px 1fr; border-bottom: 1px solid var(--border); }
.meta-r:last-child { border-bottom: none; }
.meta-k { font-family: var(--fm); font-size: 9px; letter-spacing: .16em; color: var(--accent); text-transform: uppercase; padding: 13px 18px; border-right: 1px solid var(--border); display: flex; align-items: center; }
.meta-v { font-family: var(--fb); font-size: 13px; color: var(--text-sec); padding: 13px 18px; line-height: 1.5; }

/* ── QUOTE ── */
.quote-pull {
  padding: 56px 64px; background: var(--bg3); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: var(--rx);
  position: relative; overflow: hidden;
}
.qp-mark { position: absolute; font-family: var(--fd); font-size: 220px; line-height: 1; color: rgba(245,245,245,0.03); top: -20px; left: 28px; pointer-events: none; }
.qp-text { font-family: var(--fd); font-size: clamp(18px,2.2vw,28px); font-weight: 300; font-style: italic; line-height: 1.45; letter-spacing: -.01em; color: var(--text); position: relative; z-index: 1; margin-bottom: 24px; }
.qp-src { font-family: var(--fm); font-size: 10px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; }

/* ── SPEC BLOCK ── */
.spec { background: var(--bg3); border: 1px solid var(--border); border-radius: var(--rx); overflow: hidden; }
.spec-hd { padding: 11px 18px; background: var(--night); border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.spec-hd span { font-family: var(--fm); font-size: 9px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; }
.spec-badge { font-family: var(--fm); font-size: 9px; letter-spacing: .1em; color: var(--accent); background: var(--accent-dim); border: 1px solid rgba(230,57,70,0.3); border-radius: 3px; padding: 2px 7px; }
.spec-bd { padding: 18px; }
.spec-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border-sub); gap: 16px; }
.spec-row:last-child { border-bottom: none; }
.spec-k { font-family: var(--fm); font-size: 10px; color: var(--muted); }
.spec-v { font-family: var(--fm); font-size: 10px; color: var(--text); text-align: right; }
.spec-v.acc { color: var(--accent); }

/* ── DECISIONS ── */
.decision { display: grid; grid-template-columns: 72px 1fr 1fr; gap: 48px; align-items: start; padding: 64px 0; border-bottom: 1px solid var(--border); }
.decision:last-child { border-bottom: none; padding-bottom: 0; }
.d-num { font-family: var(--fd); font-size: clamp(52px,6vw,88px); font-weight: 300; color: rgba(245,245,245,0.1); line-height: 1; letter-spacing: -.04em; }
.d-title { font-family: var(--fd); font-size: 22px; font-weight: 400; letter-spacing: -.02em; line-height: 1.15; margin-bottom: 16px; }
.d-body { font-family: var(--fb); font-size: 15px; line-height: 1.82; color: var(--muted); }
.d-body strong { color: var(--text); font-weight: 500; }

/* ── FULL-BLEED ── */
.full-bleed { margin: 64px -80px 0; }
.diagram-wrap { background: var(--night); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.diagram-hd { padding: 14px 80px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 16px; }
.diagram-hd-title { font-family: var(--fm); font-size: 10px; letter-spacing: .16em; color: var(--text-sec); text-transform: uppercase; }
.diagram-badge { font-family: var(--fm); font-size: 9px; color: var(--accent); background: var(--accent-dim); border: 1px solid rgba(230,57,70,0.3); border-radius: 3px; padding: 2px 8px; text-transform: uppercase; letter-spacing: .08em; }

/* ── TESTIMONIAL ── */
.testimonial { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; background: var(--bg3); border: 1px solid var(--border); border-radius: var(--rx); padding: 48px 56px; margin-top: 48px; }
.t-q { font-family: var(--fd); font-size: clamp(17px,2vw,24px); font-weight: 300; font-style: italic; line-height: 1.5; letter-spacing: -.01em; }
.t-src { text-align: right; }
.t-name { font-family: var(--fm); font-size: 10px; letter-spacing: .14em; color: var(--text); text-transform: uppercase; }
.t-role { font-family: var(--fm); font-size: 9px; letter-spacing: .1em; color: var(--muted); text-transform: uppercase; margin-top: 4px; }

/* ── LESSONS ── */
.lessons { border: 1px solid var(--border); border-radius: var(--rx); overflow: hidden; }
.lesson { display: grid; grid-template-columns: 40px 1fr; gap: 16px; padding: 22px 24px; border-bottom: 1px solid var(--border); align-items: start; }
.lesson:last-child { border-bottom: none; }
.ln { font-family: var(--fm); font-size: 9px; letter-spacing: .16em; color: var(--accent); padding-top: 2px; }
.lt { font-family: var(--fb); font-size: 14px; line-height: 1.75; color: var(--text-sec); }
.lt strong { color: var(--text); }

/* ── NEXT PROJECT ── */
#next { padding: 96px 80px; background: var(--bg2); border-bottom: 1px solid var(--border); }
.next-grid { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 48px; }
.next-lbl { font-family: var(--fm); font-size: 9px; letter-spacing: .18em; color: var(--muted); text-transform: uppercase; margin-bottom: 14px; }
.next-title { font-family: var(--fd); font-size: clamp(32px,5vw,60px); font-weight: 300; letter-spacing: -.03em; line-height: .95; }
.next-title em { font-style: italic; color: var(--accent); }

/* ── BTN PRIMARY (CS) ── */
body.page-cs .btn-primary {
  display: inline-flex; align-items: center; gap: 12px; padding: 13px 26px;
  background: var(--accent); color: #fff; font-family: var(--fm); font-size: 11px;
  letter-spacing: .1em; text-decoration: none; text-transform: uppercase;
  border-radius: var(--r); transition: background .15s, transform .15s var(--ease);
  white-space: nowrap;
}
body.page-cs .btn-primary:hover { background: var(--accent-hv); transform: translateY(-2px); }

/* ── SCREENSHOT SHOWCASES ── */
.screenshot-showcase {
  background: var(--night); border: 1px solid var(--border);
  border-radius: var(--rx); overflow: hidden; margin: 48px 0;
}
.screenshot-showcase img { width: 100%; display: block; }
.screenshot-caption {
  padding: 13px 20px; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.sc-label { font-family: var(--fm); font-size: 9px; letter-spacing: 0.14em; color: var(--muted); text-transform: uppercase; }
.sc-badge { font-family: var(--fm); font-size: 9px; color: var(--accent); background: var(--accent-dim); border: 1px solid rgba(230,57,70,0.3); border-radius: 3px; padding: 2px 7px; letter-spacing: 0.08em; text-transform: uppercase; }

.screenshots-2col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--border); border: 1px solid var(--border);
  border-radius: var(--rx); overflow: hidden; margin: 48px 0;
}
.screenshots-2col .screenshot-showcase { margin: 0; border: none; border-radius: 0; }

.screenshot-fullbleed { margin: 64px -80px 0; }
.screenshot-fullbleed img { width: 100%; display: block; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.screenshot-fullbleed .screenshot-caption { padding: 13px 80px; background: var(--night); border: none; border-top: 1px solid var(--border); }

/* HTML Mockup components */
.mockup-frame {
  background: var(--night); border: 1px solid var(--border);
  border-radius: var(--rx); overflow: hidden; margin: 48px 0;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.mockup-titlebar {
  height: 40px; background: var(--bg3); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 16px; gap: 7px;
}
.td { width: 10px; height: 10px; border-radius: 50%; background: var(--border); }
.mockup-tag { font-family: var(--fm); font-size: 9px; letter-spacing: 0.12em; color: var(--faded); text-transform: uppercase; margin-left: 8px; }
.mockup-body { padding: 24px; }


/* ── CS PARALLAX HINTS ── */
.hero-num     { will-change: transform; }
.hero-content { will-change: transform, opacity; }
.hero-grid    { will-change: transform; }
.ch-num-large { will-change: transform; }
.qp-mark      { will-change: transform; }
body.page-cs .screenshot-showcase img,
body.page-cs .screenshot-fullbleed img { will-change: transform; }

/* Hero content opacity is driven by JS — start at full */
.hero-content { opacity: 1; transition: none; }

/* First section slides in with a subtle reveal */
.section { transform: translateZ(0); }

/* ── CS RESPONSIVE ── */
/* Tablet: sidebar becomes horizontal top bar */
@media (max-width: 1024px) {
  #sidebar {
    position: fixed; top: 0; left: 0; right: 0; bottom: auto;
    height: 52px; width: 100%; flex-direction: row; align-items: center;
    padding: 0 20px; border-right: none; border-bottom: 1px solid var(--border);
    z-index: 200;
  }
  .sb-back { margin-bottom: 0; margin-right: 16px; flex-shrink: 0; }
  .sb-chapters { flex-direction: row; justify-content: center; gap: 10px; padding: 0; overflow-x: auto; flex: 1; scrollbar-width: none; }
  .sb-chapters::-webkit-scrollbar { display: none; }
  .sb-ch-name { display: none; }
  .sb-progress-wrap { display: none; }
  #main { margin-left: 0; margin-top: 52px; }
  .section { padding: 80px 40px; }
  .full-bleed { margin: 40px -40px 0; }
  .diagram-hd { padding: 12px 40px; }
  #next { padding: 64px 40px; }
  body.page-cs #hero { padding: 0 40px 64px; }
  .decision { grid-template-columns: 40px 1fr; }
  .decision > :last-child { grid-column: 2; }
  .two-col, .three-col, .four-col { grid-template-columns: 1fr; }
  .testimonial { grid-template-columns: 1fr; gap: 24px; }
  .t-src { text-align: left; }
  .next-grid { grid-template-columns: 1fr; gap: 24px; }
  .screenshot-fullbleed { margin: 40px -40px 0; }
  .screenshot-fullbleed .screenshot-caption { padding: 12px 40px; }
  .screenshots-2col { grid-template-columns: 1fr; }
  .insight-wrap { padding: 48px 40px; }
}

/* Mobile */
@media (max-width: 768px) {
  #sidebar { padding: 0 16px; gap: 8px; }
  #main { margin-top: 52px; }
  .section { padding: 56px 20px; }
  .full-bleed { margin: 28px -20px 0; }
  .diagram-hd { padding: 12px 20px; }
  #next { padding: 48px 20px; }
  body.page-cs #hero { padding: 0 20px 48px; }
  .hero-h { margin-bottom: 28px; }
  .hero-stats { gap: 28px; flex-wrap: wrap; padding-top: 28px; }
  .hs-n { font-size: clamp(28px,8vw,40px); }
  .quote-pull { padding: 36px 24px; }
  .qp-mark { font-size: 120px; }
  .qp-text { font-size: 16px; }
  .insight-wrap { padding: 36px 20px; }
  .insight-inner { grid-template-columns: 1fr; gap: 32px; }
  .insight-sidebar { flex-direction: row; align-items: center; }
  .insight-sidebar .label { writing-mode: horizontal-tb; transform: none; }
  .insight-line { width: 40px; height: 1px; }
  .screenshot-fullbleed { margin: 28px -20px 0; }
  .screenshot-fullbleed .screenshot-caption { padding: 10px 20px; }
  .testimonial { padding: 32px 24px; }
  .ch-header { margin-bottom: 48px; }
  .ch-h { font-size: clamp(24px,6vw,36px); }
  .ch-body { font-size: 15px; }
  .decision { gap: 24px; }
  .d-num { font-size: clamp(40px,9vw,60px); }
  #next .next-grid { grid-template-columns: 1fr; }
  .next-title { font-size: clamp(28px,7vw,44px); }
}

/* Small mobile */
@media (max-width: 480px) {
  .hero-stats { flex-direction: column; gap: 20px; }
  .hero-h { font-size: clamp(40px,11vw,68px); }
  .sb-ch { width: 22px; height: 22px; }
  .sb-dot { width: 5px; height: 5px; }
}


/* ──────────────────────────────────────────────────────────
   INDEX PAGE STYLES  (body.page-index)
   ────────────────────────────────────────────────────────── */

body.page-index { cursor: none; }

/* ── CURSOR ── */
#cursor-dot {
  position: fixed; z-index: 9999; pointer-events: none;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--amber);
  transform: translate(-50%,-50%);
  transition: transform 0.08s, opacity 0.2s;
  will-change: left, top;
}
#cursor-ring {
  position: fixed; z-index: 9998; pointer-events: none;
  width: 36px; height: 36px; border-radius: 50%;
  border: 1.5px solid var(--amber); opacity: 0.5;
  transform: translate(-50%,-50%);
  transition: left 0.14s ease-out, top 0.14s ease-out, width 0.3s, height 0.3s, opacity 0.3s, border-color 0.3s;
  will-change: left, top;
}
body.page-index:hover #cursor-dot { opacity: 1; }
body.page-index.cursor-hover #cursor-ring { width: 56px; height: 56px; opacity: 0.35; }
#cursor-glow {
  position: fixed; z-index: 9996; pointer-events: none;
  width: 280px; height: 280px; border-radius: 50%;
  background: radial-gradient(circle, var(--amber-glow) 0%, transparent 70%);
  transform: translate(-50%,-50%);
  transition: left 0.5s ease-out, top 0.5s ease-out;
  will-change: left, top;
}

/* ── NOISE OVERLAY ── */
body.page-index::before {
  content: '';
  position: fixed; inset: 0; z-index: 9995; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.025;
  mix-blend-mode: overlay;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 48px;
  transition: background 0.4s, backdrop-filter 0.4s;
}
nav.scrolled {
  background: rgba(15,20,25,0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.12em;
  color: var(--amber); text-decoration: none; text-transform: uppercase;
}
.nav-right { display: flex; align-items: center; gap: 36px; }
.nav-link {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--muted); text-decoration: none; text-transform: uppercase;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text); }

/* ── INDEX HERO ── */
body.page-index #hero {
  min-height: 88vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  text-align: center; isolation: isolate;
}
#hero-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%; pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; align-items: center;
  gap: 0; padding: 0 24px;
}
body.page-index .hero-eyebrow {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.22em;
  color: var(--amber); text-transform: uppercase; margin-bottom: 28px;
  opacity: 0; transform: translateY(16px);
  animation: fadeUp 0.8s 0.2s ease forwards;
}
.hero-headline {
  font-family: var(--font-display); font-size: clamp(40px,6.5vw,88px);
  font-weight: 300; line-height: 1.0; letter-spacing: -0.025em;
  margin-bottom: 32px;
  display: flex; flex-direction: column; align-items: center; gap: 0.05em;
}
.hero-headline .line { display: block; overflow: hidden; }
.hero-headline .word { display: inline-block; overflow: hidden; margin-right: 0.2em; }
.hero-headline .word:last-child { margin-right: 0; }
.hero-headline .word span {
  display: inline-block; transform: translateY(110%);
  animation: slideUp 1s cubic-bezier(0.16,1,0.3,1) forwards;
}
.hero-headline .line:nth-child(1) .word:nth-child(1) span { animation-delay: 0.3s; }
.hero-headline .line:nth-child(1) .word:nth-child(2) span { animation-delay: 0.42s; }
.hero-headline .line:nth-child(2) .word:nth-child(1) span { animation-delay: 0.56s; }
.hero-headline .line:nth-child(2) .word:nth-child(2) span { animation-delay: 0.68s; }
.accent-line { color: var(--amber); }
.hero-desc {
  font-family: var(--font-body); max-width: 480px; font-size: 18px;
  line-height: 1.65; color: var(--muted); margin-bottom: 32px;
  opacity: 0; transform: translateY(20px);
  animation: fadeUp 0.9s 1.0s ease forwards;
}
.hero-cta {
  display: flex; align-items: center; gap: 16px;
  opacity: 0; animation: fadeUp 0.9s 1.15s ease forwards;
}
body.page-index .btn-primary {
  display: inline-flex; align-items: center; gap: 10px; padding: 12px 24px;
  background: var(--amber); color: #f5f5f5; font-family: var(--font-mono);
  font-size: 13px; font-weight: 500; letter-spacing: 0.05em; text-decoration: none;
  border-radius: var(--radius-lg);
  transition: background var(--dur) var(--ease-std), transform var(--dur) var(--ease-std);
}
body.page-index .btn-primary:hover { background: var(--amber-dark); transform: translateY(-2px); }
.btn-ghost {
  display: inline-flex; align-items: center; padding: 12px 24px;
  border: 1px solid var(--border); color: var(--text); font-family: var(--font-mono);
  font-size: 13px; font-weight: 400; letter-spacing: 0.04em; text-decoration: none;
  border-radius: var(--radius-lg);
  transition: border-color var(--dur) var(--ease-std), color var(--dur) var(--ease-std), transform var(--dur) var(--ease-std);
}
.btn-ghost:hover { border-color: rgba(245,245,245,0.2); color: var(--text); transform: translateY(-2px); }
.scroll-hint {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em;
  color: var(--muted); text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  z-index: 2; opacity: 0; animation: fadeUp 0.9s 1.4s ease forwards;
}
.scroll-hint::after {
  content: ''; width: 1px; height: 44px;
  background: linear-gradient(to bottom, var(--muted), transparent);
}

/* ── MARQUEE ── */
.marquee-section {
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 18px 0; overflow: hidden; background: var(--bg2);
}
.marquee-track { display: flex; gap: 0; white-space: nowrap; animation: marquee 28s linear infinite; }
.marquee-item {
  display: inline-flex; align-items: center; gap: 32px; padding: 0 32px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.14em;
  color: var(--muted); text-transform: uppercase; flex-shrink: 0;
}
.marquee-item .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--amber); flex-shrink: 0; }

/* ── INDEX SECTION SHARED ── */
section { padding: 120px 48px; }
.section-label {
  display: flex; align-items: center; gap: 16px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em;
  color: var(--amber); text-transform: uppercase; margin-bottom: 64px;
}
.section-label::after { content: ''; flex: 1; max-width: 80px; height: 1px; background: var(--border); }

/* ── PROJECTS ── */
#projects { background: var(--bg); padding-left: 0; padding-right: 0; padding-top: 80px; padding-bottom: 0; }
#projects .section-label { padding: 0 56px; margin-bottom: 48px; }
.project-rows { border-top: 1px solid var(--border); }
.project-row {
  display: grid; grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; height: 100vh;
  overflow: hidden; will-change: transform;
  transform-origin: top center;
}
/* Stacking z-index — later cards always on top */
.project-row:nth-child(1) { z-index: 1; }
.project-row:nth-child(2) { z-index: 2; }
.project-row:nth-child(3) { z-index: 3; }
.project-row:nth-child(4) { z-index: 4; }
.project-row:nth-child(5) { z-index: 5; }
.project-row:nth-child(6) { z-index: 6; }
.project-row:nth-child(even) .project-info  { order: 2; border-left: 1px solid var(--border); border-right: none; }
.project-row:nth-child(even) .project-visual { order: 1; }
.project-info {
  padding: 64px 56px; display: flex; flex-direction: column;
  justify-content: space-between; gap: 40px;
  border-right: 1px solid var(--border); background: var(--bg);
  height: 100%; overflow-y: auto;
}
.project-top { display: flex; flex-direction: column; gap: 18px; }
.project-number { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; color: var(--amber); text-transform: uppercase; }
.project-title { font-family: var(--font-display); font-size: clamp(30px,3.2vw,50px); font-weight: 400; line-height: 1.04; letter-spacing: -0.025em; }
.project-desc { font-family: var(--font-body); font-size: 16px; line-height: 1.75; color: var(--muted); max-width: 440px; }
.project-keypoints { display: flex; flex-direction: column; gap: 14px; }
.keypoint { font-family: var(--font-body); font-size: 15px; line-height: 1.7; color: var(--muted); }
.kp-label { color: var(--text); font-weight: 500; }
.project-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; padding-top: 8px; }
.project-cta {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--amber); text-transform: uppercase; text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  opacity: 0; transform: translateX(-8px);
  transition: opacity 0.3s, transform 0.3s;
}
.project-row:hover .project-cta { opacity: 1; transform: translateX(0); }
.project-visual {
  background: var(--bg2); position: relative;
  overflow: hidden; display: flex; align-items: center; justify-content: center;
}
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em;
  padding: 5px 11px; border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--muted); text-transform: uppercase; transition: border-color 0.25s, color 0.25s;
}
.project-row:hover .tag { border-color: rgba(230,57,70,0.5); color: var(--amber); }
.project-pattern {
  position: absolute; inset: 0; width: 100%; height: 100%;
  opacity: 0.15; transition: opacity 0.5s; pointer-events: none; color: var(--amber);
}
.project-row:hover .project-pattern { opacity: 0.35; }


/* ── PEEK BAR — title preview as next card enters ── */
.peek-bar {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 20;
  height: 72px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 56px;
  background: linear-gradient(transparent, rgba(5,5,8,0.85));
  opacity: 0; transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}
.peek-bar.visible { opacity: 1; transform: none; }
.peek-next-label { font-family: var(--font-mono); font-size: 9px; letter-spacing: .18em; color: var(--muted); text-transform: uppercase; }
.peek-next-title { font-family: var(--font-display); font-size: 18px; font-weight: 300; letter-spacing: -.02em; color: var(--text); }
.peek-next-cta { font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; color: var(--amber); text-transform: uppercase; }
/* Visual stat & pills */
.visual-hero-stat { position: absolute; top: 48px; right: 48px; z-index: 2; text-align: right; }
.project-row:nth-child(even) .visual-hero-stat { right: auto; left: 48px; text-align: left; }
.vhs-number {
  font-family: var(--font-display); font-size: clamp(72px,10vw,120px);
  font-weight: 300; letter-spacing: -0.04em; line-height: 0.9;
  color: var(--text); opacity: 0.08; transition: opacity 0.5s;
}
.vhs-number span { color: var(--amber); }
.project-row.in-view .vhs-number { opacity: 0.12; }
.vhs-label {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em;
  color: var(--muted); text-transform: uppercase; margin-top: 4px;
  opacity: 0; transition: opacity 0.5s 0.2s;
}
.project-row.in-view .vhs-label { opacity: 0.6; }
.visual-pills-row {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 2;
  display: flex; flex-wrap: wrap; gap: 1px;
  background: var(--border); border-top: 1px solid var(--border);
}
.vpill {
  flex: 1; min-width: 140px; background: var(--bg2);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  color: var(--muted); text-transform: uppercase; padding: 14px 18px;
  opacity: 0; transform: translateY(8px); transition: opacity 0.4s, transform 0.4s;
}
.project-row.in-view .vpill { opacity: 1; transform: translateY(0); }
.project-row.in-view .vpill:nth-child(2) { transition-delay: 0.08s; }
.project-row.in-view .vpill:nth-child(3) { transition-delay: 0.16s; }
.project-row:hover .vpill { color: var(--amber); }
.pv-dark { background: var(--bg3); }

/* Column ratios per project */
.pr-01 { grid-template-columns: 5fr 7fr; }
.pr-02 { grid-template-columns: 5fr 7fr; }
.pr-02 .project-info { order: 2; border-left: 1px solid var(--border); border-right: none; }
.pr-02 .project-visual { order: 1; }
.pr-02 .visual-hero-stat { left: 48px; right: auto; text-align: left; }
.pr-03 { grid-template-columns: 5fr 7fr; }
.pr-04 { grid-template-columns: 5fr 7fr; }
.pr-04 .project-info { order: 2; border-left: 1px solid var(--border); border-right: none; }
.pr-04 .project-visual { order: 1; }
.pr-04 .visual-hero-stat { left: 48px; right: auto; text-align: left; }
.pr-05 { grid-template-columns: 5fr 7fr; }
.pr-06 { grid-template-columns: 5fr 7fr; }
.pr-06 .project-info { order: 2; border-left: 1px solid var(--border); border-right: none; }
.pr-06 .project-visual { order: 1; }
.pr-06 .visual-hero-stat { left: 48px; right: auto; text-align: left; }

/* ── CONTACT / FOOTER ── */
#contact {
  min-height: 60vh; display: flex; flex-direction: column; justify-content: center;
  border-top: 1px solid var(--border); background: var(--bg2);
}
.contact-headline {
  font-family: var(--font-display); font-size: clamp(48px,7vw,100px);
  font-weight: 300; line-height: 0.95; letter-spacing: -0.025em; margin-bottom: 48px;
}
.contact-headline em { font-style: normal; color: var(--amber); }
.contact-links { display: flex; gap: 24px; flex-wrap: wrap; }
.contact-link {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.1em;
  color: var(--text); text-decoration: none; text-transform: uppercase;
  padding-bottom: 3px; border-bottom: 1px solid var(--border);
  transition: color 0.2s, border-color 0.2s;
}
.contact-link:hover { color: var(--amber); border-color: var(--amber); }
.footer-bar {
  margin-top: 80px; padding-top: 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-bar span { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; color: var(--muted); text-transform: uppercase; }

/* ── ABOUT ── */
#about { background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.about-statement { font-family: var(--font-display); font-size: clamp(32px,4vw,56px); font-weight: 400; line-height: 1.08; letter-spacing: -0.025em; }
.about-statement em { font-style: normal; color: var(--amber); }
.about-right { display: flex; flex-direction: column; gap: 36px; padding-top: 8px; }
.about-bio { font-family: var(--font-body); font-size: 17px; line-height: 1.75; color: var(--muted); }
.about-bio strong { color: var(--text); font-weight: 500; }
.about-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.stat-item { background: var(--bg2); padding: 24px 20px; display: flex; flex-direction: column; gap: 6px; }
.stat-number { font-family: var(--font-display); font-size: 36px; font-weight: 400; letter-spacing: -0.025em; color: var(--text); line-height: 1; }
.stat-number span { color: var(--amber); }
.stat-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; color: var(--muted); text-transform: uppercase; }

/* ── APPROACH ── */
#approach { background: var(--bg); border-bottom: 1px solid var(--border); }
.approach-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 64px; gap: 40px; }
.approach-headline { font-family: var(--font-display); font-size: clamp(36px,4.5vw,60px); font-weight: 400; letter-spacing: -0.025em; line-height: 1.05; max-width: 520px; }
.approach-headline em { font-style: normal; color: var(--amber); }
.approach-sub { font-family: var(--font-body); font-size: 16px; line-height: 1.7; color: var(--muted); max-width: 320px; flex-shrink: 0; }
.pillars { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.pillar { background: var(--bg); padding: 48px 40px; display: flex; flex-direction: column; gap: 20px; position: relative; overflow: hidden; transition: background 0.3s; }
.pillar:hover { background: var(--bg2); }
.pillar-index { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; color: var(--amber); text-transform: uppercase; }
.pillar-icon { width: 48px; height: 48px; flex-shrink: 0; opacity: 0.7; }
.pillar-title { font-family: var(--font-display); font-size: 20px; font-weight: 400; letter-spacing: -0.015em; line-height: 1.1; }
.pillar-desc { font-family: var(--font-body); font-size: 15px; line-height: 1.72; color: var(--muted); }
.pillar-link {
  margin-top: auto; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em;
  color: var(--amber); text-transform: uppercase; text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  opacity: 0; transform: translateY(6px); transition: opacity 0.25s, transform 0.25s;
}
.pillar:hover .pillar-link { opacity: 1; transform: translateY(0); }

/* ── TWEAKS PANEL ── */
#tweaks-panel {
  position: fixed; bottom: 24px; right: 24px; z-index: 9000;
  background: var(--bg2); border: 1px solid var(--border); border-radius: 4px;
  padding: 20px 24px; width: 240px; display: none;
  font-family: var(--font-mono); font-size: 12px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}
#tweaks-panel.active { display: block; }
#tweaks-panel h3 { font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--amber); margin-bottom: 16px; }
.tweak-row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.tweak-row label { font-size: 11px; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; }
.tweak-row select, .tweak-row input[type=range] {
  background: var(--bg3); border: 1px solid var(--border);
  color: var(--text); font-family: var(--font-mono); font-size: 12px;
  padding: 6px 8px; border-radius: 2px; cursor: none;
  -webkit-appearance: none; appearance: none;
}
.tweak-row input[type=range] { padding: 0; height: 3px; accent-color: var(--amber); }

/* ── KEYFRAMES ── */
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
@keyframes slideUp { to { transform: translateY(0); } }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }


/* ══════════════════════════════════════════════════════════
   UTOPIA TOKYO — Sophistication Layer
   Layered onto ACR Labs system: adds texture overlays,
   bracket corner frames, Utopia easing, ghost-button fill
   inversion, cursor bracket motif, and eyebrow decoratives.
   ══════════════════════════════════════════════════════════ */

/* ── EXTENDED TOKENS ── */
:root {
  --ease-ut:       cubic-bezier(0.625, 0.05, 0, 1);
  --dur-ut:        0.55s;
  --dur-ut-fast:   0.28s;
  --surface:       #1a1f26;
  --surface-hi:    #1f2530;
}

/* ── TEXT SELECTION ── */
::selection { background: var(--accent); color: #080b0e; }
::-moz-selection { background: var(--accent); color: #080b0e; }

/* ── CRT SCANLINE OVERLAY (global, all pages) ── */
body::after {
  content: '';
  position: fixed; inset: 0; z-index: 9993; pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0,0,0,0.022) 0px,
    rgba(0,0,0,0.022) 1px,
    transparent 1px,
    transparent 3px
  );
}

/* ── GRAIN OVERLAY — extend to CS pages ── */
body.page-cs::before {
  content: '';
  position: fixed; inset: 0; z-index: 9995; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.02;
  mix-blend-mode: overlay;
}

/* ── CORNER BRACKET FRAME SYSTEM ── */
/* Elements carrying data-mask-state get 4 animated corner brackets */
[data-mask-state] {
  position: relative;
  --corner-c: rgba(245,245,245,0.22);
}
[data-mask-state]:hover   { --corner-c: var(--accent); }
[data-mask-state="selected"] { --corner-c: var(--accent); }

.frame__corner {
  position: absolute;
  width: 13px; height: 13px;
  pointer-events: none; z-index: 10;
  opacity: 0;
  transition: opacity var(--dur-ut-fast) var(--ease-ut),
              transform var(--dur-ut) var(--ease-ut);
}
.frame__corner--tl {
  top: 4px; left: 4px;
  border-top:  1.5px solid var(--corner-c);
  border-left: 1.5px solid var(--corner-c);
  transform: scale(0.45); transform-origin: top left;
}
.frame__corner--tr {
  top: 4px; right: 4px;
  border-top:   1.5px solid var(--corner-c);
  border-right: 1.5px solid var(--corner-c);
  transform: scale(0.45); transform-origin: top right;
}
.frame__corner--br {
  bottom: 4px; right: 4px;
  border-bottom: 1.5px solid var(--corner-c);
  border-right:  1.5px solid var(--corner-c);
  transform: scale(0.45); transform-origin: bottom right;
}
.frame__corner--bl {
  bottom: 4px; left: 4px;
  border-bottom: 1.5px solid var(--corner-c);
  border-left:   1.5px solid var(--corner-c);
  transform: scale(0.45); transform-origin: bottom left;
}
[data-mask-state]:hover .frame__corner,
[data-mask-state="selected"] .frame__corner {
  opacity: 1; transform: scale(1);
}

/* ── ENHANCED EASING on existing components ── */
.card {
  transition: background var(--dur-ut-fast) var(--ease-ut);
}
.pillar {
  transition: background var(--dur-ut-fast) var(--ease-ut);
}
.stat-card {
  transition: background var(--dur-ut-fast) var(--ease-ut),
              transform   var(--dur-ut-fast) var(--ease-ut);
}
.stat-card:hover { transform: translateY(-3px); background: var(--bg3); }
.tag {
  transition: border-color var(--dur-ut-fast) var(--ease-ut),
              color         var(--dur-ut-fast) var(--ease-ut);
}
.project-cta {
  transition: opacity   var(--dur-ut-fast) var(--ease-ut),
              transform var(--dur-ut-fast) var(--ease-ut);
}
.pillar-link {
  transition: opacity   var(--dur-ut-fast) var(--ease-ut),
              transform var(--dur-ut-fast) var(--ease-ut);
}
.project-pattern {
  transition: opacity var(--dur-ut) var(--ease-ut);
}

/* ── GHOST BUTTON — fill inversion on hover ── */
.btn-ghost {
  transition: background   var(--dur-ut-fast) var(--ease-ut),
              border-color var(--dur-ut-fast) var(--ease-ut),
              color        var(--dur-ut-fast) var(--ease-ut),
              transform    var(--dur-ut-fast) var(--ease-ut);
}
.btn-ghost:hover {
  background:   var(--text);
  color:        var(--night);
  border-color: var(--text);
  transform: translateY(-2px);
}

/* ── REVEAL — Utopia easing for all scroll-in animations ── */
.reveal {
  transition: opacity 0.85s var(--ease-ut), transform 0.85s var(--ease-ut);
}

/* ── NAV LINK — grow underline from left ── */
.nav-link {
  position: relative;
  transition: color var(--dur-ut-fast) var(--ease-ut);
}
.nav-link::after {
  content: '';
  position: absolute; bottom: -2px; left: 0;
  width: 0; height: 1px; background: var(--amber);
  transition: width var(--dur-ut-fast) var(--ease-ut);
}
.nav-link:hover::after { width: 100%; }
.nav-link.nav-agentic::after { background: #00c8ff; }
html[data-theme="light"] .nav-link.nav-agentic::after { background: #005f8c; }

/* ── SIDEBAR — Utopia easing ── */
.sb-back {
  transition: color var(--dur-ut-fast) var(--ease-ut),
              border-color var(--dur-ut-fast) var(--ease-ut);
}
.sb-back svg {
  transition: transform var(--dur-ut-fast) var(--ease-ut);
}
.contact-link {
  transition: color var(--dur-ut-fast) var(--ease-ut),
              border-color var(--dur-ut-fast) var(--ease-ut);
}

/* ── SECTION LABEL — pixel bracket prefix ── */
.section-label::before {
  content: '[';
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0;
  color: var(--amber); opacity: 0.5; margin-right: -2px;
}

/* ── CS CHAPTER LABELS — bracket wrapping ── */
.ch-label::before { content: '[ '; opacity: 0.55; }
.ch-label::after  { content: ' ]'; opacity: 0.55; }

/* ── MARQUEE DOT — slow pulse rhythm ── */
.marquee-item .dot {
  animation: ut-dot-pulse 2.8s var(--ease-ut) infinite;
}
@keyframes ut-dot-pulse {
  0%, 100% { opacity: 1;    transform: scale(1); }
  50%       { opacity: 0.3; transform: scale(0.6); }
}

/* ── GRID + CROSSHAIR + DOT BACKGROUND PATTERN ── */
/*
 * SVG tile uses corner arm-stitching: each corner of the 160×160 tile
 * contributes one L-shaped arm pair. When tiles are adjacent, the arms
 * from four neighboring tiles combine into a full "+" crosshair at every
 * grid intersection — no JS required.
 */
html::before {
  content: '';
  position: fixed; inset: 0;
  z-index: -1; pointer-events: none;
  background-image:
    /* Layer 1 — SVG tile: crosshair arms only (no scatter dots) */
    url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><g stroke='%23e63946' stroke-opacity='0.18' stroke-width='0.9' stroke-linecap='square'><line x1='0' y1='0' x2='8' y2='0'/><line x1='0' y1='0' x2='0' y2='8'/><line x1='160' y1='0' x2='152' y2='0'/><line x1='160' y1='0' x2='160' y2='8'/><line x1='0' y1='160' x2='8' y2='160'/><line x1='0' y1='160' x2='0' y2='152'/><line x1='160' y1='160' x2='152' y2='160'/><line x1='160' y1='160' x2='160' y2='152'/></g></svg>"),
    /* Layer 2 — vertical grid lines */
    repeating-linear-gradient(90deg, rgba(230,57,70,0.055) 0, rgba(230,57,70,0.055) 0.5px, transparent 0.5px, transparent 160px),
    /* Layer 3 — horizontal grid lines */
    repeating-linear-gradient(0deg,  rgba(230,57,70,0.055) 0, rgba(230,57,70,0.055) 0.5px, transparent 0.5px, transparent 160px);
  background-size: 160px 160px, 160px 160px, 160px 160px;
  background-position: 0 0, 0 0, 0 0;
  animation:
    bg-grid-drift  72s linear     infinite,
    bg-grid-pulse   9s ease-in-out infinite;
}

@keyframes bg-grid-drift {
  /* All three layers drift together — crosshairs stay locked to intersections */
  from { background-position: 0 0,     0 0,     0 0;     }
  to   { background-position: 160px 160px, 160px 160px, 160px 160px; }
}

@keyframes bg-grid-pulse {
  0%, 100% { opacity: 1;   }
  50%       { opacity: 0.52; }
}

/* ── CURSOR BRACKET MOTIF (index page only) ── */
#cursor-brackets {
  position: fixed; z-index: 9997; pointer-events: none;
  width: 34px; height: 34px;
  transform: translate(-50%, -50%);
  transition: width 0.4s var(--ease-ut), height 0.4s var(--ease-ut), opacity 0.25s;
  opacity: 0;
  will-change: left, top;
}
body.page-index:hover #cursor-brackets { opacity: 1; }
body.page-index.cursor-hover #cursor-brackets { width: 54px; height: 54px; }
.cb-corner {
  position: absolute;
  width: 7px; height: 7px;
}
.cb-corner--tl { top: 0; left: 0; border-top: 1.5px solid var(--amber); border-left: 1.5px solid var(--amber); }
.cb-corner--tr { top: 0; right: 0; border-top: 1.5px solid var(--amber); border-right: 1.5px solid var(--amber); }
.cb-corner--br { bottom: 0; right: 0; border-bottom: 1.5px solid var(--amber); border-right: 1.5px solid var(--amber); }
.cb-corner--bl { bottom: 0; left: 0; border-bottom: 1.5px solid var(--amber); border-left: 1.5px solid var(--amber); }

/* ── INDEX RESPONSIVE ── */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .approach-header { flex-direction: column; align-items: flex-start; }
  .pillars { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  /* Revert sticky stacking — use normal scroll on tablet/mobile */
  .project-row { position: relative !important; height: auto !important; grid-template-columns: 1fr !important; z-index: auto !important; }
  .project-row:nth-child(even) .project-info  { order: 1; border-left: none; }
  .project-row:nth-child(even) .project-visual { order: 2; }
  .pr-02 .project-info, .pr-04 .project-info, .pr-06 .project-info { order: 1; border-left: none; }
  .pr-02 .project-visual, .pr-04 .project-visual, .pr-06 .project-visual { order: 2; }
  .project-info { height: auto; border-right: none; border-bottom: 1px solid var(--border); }
  .project-visual { min-height: 360px; }
  .peek-bar { display: none; }
}

@media (max-width: 768px) {
  nav { padding: 16px 20px; }
  .nav-right .nav-link { display: none; }
  section { padding: 72px 24px; }
  #projects { padding-top: 56px; }
  #projects .section-label { padding: 0 24px; }
  .project-info { padding: 36px 24px; }
  .project-visual { min-height: 280px; }
  #contact { padding: 72px 24px; }
  .contact-headline { font-size: clamp(36px,9vw,64px); margin-bottom: 32px; }
  .contact-links { gap: 16px; }
  .footer-bar { flex-direction: column; align-items: flex-start; gap: 8px; }
  .about-stats { grid-template-columns: repeat(3,1fr); }
  .pillars { grid-template-columns: 1fr; }
  .approach-sub { max-width: 100%; }
  body.page-index #hero { min-height: 100svh; }
  .hero-desc { font-size: 16px; max-width: 100%; }
  .hero-cta { flex-direction: column; align-items: center; gap: 12px; }
}

@media (max-width: 480px) {
  section { padding: 56px 20px; }
  #projects .section-label { padding: 0 20px; }
  .project-info { padding: 32px 20px; }
  .project-number { font-size: 10px; }
  .project-visual { min-height: 240px; }
  .visual-hero-stat { top: 20px; right: 20px; }
  .vhs-number { font-size: clamp(44px,13vw,72px); }
  .visual-pills-row { display: none; }
  #contact { padding: 56px 20px; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .stat-number { font-size: 28px; }
  .scroll-hint { display: none; }
  .marquee-item { font-size: 10px; padding: 0 20px; gap: 20px; }
}

/* ══════════════════════════════════════════════════════════
   DIAGRAM HERO  (lab pages — system/workflow diagram first)
   ══════════════════════════════════════════════════════════ */
.diagram-hero {
  background: var(--night);
  border-bottom: 1px solid var(--border);
  padding: 80px 80px 72px;
  display: flex; flex-direction: column; align-items: center;
  position: relative; overflow: hidden; isolation: isolate;
}
.diagram-hero-inner {
  max-width: 1100px; width: 100%;
  display: flex; flex-direction: column; align-items: flex-start;
  position: relative; z-index: 1;
}
.diagram-hero-super {
  display: flex; align-items: center; gap: 10px; margin-bottom: 20px;
}
.diagram-hero-eyebrow {
  font-family: var(--fm); font-size: 9px; letter-spacing: .18em;
  color: var(--accent); text-transform: uppercase;
  border: 1px solid rgba(230,57,70,0.3); background: rgba(230,57,70,0.06);
  padding: 3px 9px; border-radius: 2px;
}
.diagram-hero-eyebrow-m {
  font-family: var(--fm); font-size: 9px; letter-spacing: .16em;
  color: var(--muted); text-transform: uppercase;
  border: 1px solid var(--border); padding: 3px 9px; border-radius: 2px;
}
.diagram-hero-h {
  font-family: var(--fd); font-size: clamp(28px,3.5vw,48px);
  font-weight: 300; letter-spacing: -.03em; line-height: 1.05;
  margin-bottom: 12px; max-width: 700px;
}
.diagram-hero-h em { font-style: italic; color: var(--accent); }
.diagram-hero-sub {
  font-family: var(--fb); font-size: 15px; line-height: 1.75;
  color: var(--muted); max-width: 600px; margin-bottom: 48px;
}
.diagram-hero-sub strong { color: var(--text); font-weight: 500; }
.diagram-hero-canvas {
  width: 100%; border: 1px solid var(--border);
  border-radius: var(--rx); overflow: hidden; background: var(--bg3);
}

/* ══════════════════════════════════════════════════════════
   LAB VIDEO PLAYER  (YouTube-style demo frame)
   ══════════════════════════════════════════════════════════ */
.lab-player-wrap {
  background: #050508;
  border-bottom: 1px solid var(--border);
  padding: 56px 80px;
  display: flex; flex-direction: column; align-items: center;
  isolation: isolate;
}
.lab-player-label {
  font-family: var(--fm); font-size: 9px; letter-spacing: .18em;
  color: var(--muted); text-transform: uppercase;
  margin-bottom: 20px; width: 100%; max-width: 1200px;
}
.lab-player {
  width: 100%; max-width: 1200px;
  border-radius: var(--rx); overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 0 0 1px rgba(230,57,70,0.1),
              0 32px 80px rgba(0,0,0,0.65),
              0 0 48px rgba(230,57,70,0.04);
  display: flex; flex-direction: column;
}
.lab-player-screen {
  aspect-ratio: 16 / 9; overflow: hidden;
  position: relative; background: #0f0f13;
  display: flex; flex-direction: column;
}
.lab-player-chrome {
  background: #0a0a0d;
  border-top: 2px solid var(--accent);
  padding: 0 16px;
  height: 42px;
  display: flex; align-items: center; gap: 14px;
  flex-shrink: 0;
}
.lpc-play {
  width: 26px; height: 26px; display: flex; align-items: center;
  justify-content: center; color: rgba(245,245,245,0.65); flex-shrink: 0;
}
.lpc-progress {
  flex: 1; height: 3px; background: rgba(245,245,245,0.1);
  border-radius: 2px; position: relative;
}
.lpc-progress-fill {
  position: absolute; left: 0; top: 0; height: 100%;
  background: var(--accent); border-radius: 2px; width: 28%;
}
.lpc-time {
  font-family: var(--fm); font-size: 10px; letter-spacing: .04em;
  color: rgba(245,245,245,0.4); flex-shrink: 0; white-space: nowrap;
}
.lpc-right {
  display: flex; align-items: center; gap: 12px; margin-left: 4px;
}
.lpc-icon {
  color: rgba(245,245,245,0.35); display: flex; align-items: center;
}
.lab-player-caption {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: #060608;
  border-top: 1px solid rgba(245,245,245,0.04);
  flex-wrap: wrap; gap: 8px;
}
.lpc-caption-label {
  font-family: var(--fm); font-size: 9px; letter-spacing: .14em;
  color: rgba(245,245,245,0.3); text-transform: uppercase;
}
.lpc-caption-status {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.lpc-status-item {
  font-family: var(--fm); font-size: 9px; letter-spacing: .08em;
  color: rgba(245,245,245,0.38); text-transform: uppercase;
  display: flex; align-items: center; gap: 5px;
}
.lpc-dot { width: 5px; height: 5px; border-radius: 50%; }
.lpc-github-link {
  font-family: var(--fm); font-size: 9px; letter-spacing: .12em;
  color: rgba(245,245,245,0.35); text-decoration: none; text-transform: uppercase;
  transition: color .15s;
}
.lpc-github-link:hover { color: rgba(245,245,245,0.7); }

@media(max-width:1024px) {
  .diagram-hero { padding: 64px 40px 56px; }
  .lab-player-wrap { padding: 40px 40px; }
}
@media(max-width:768px) {
  .diagram-hero { padding: 56px 20px 48px; }
  .lab-player-wrap { padding: 32px 16px; }
}

/* ══════════════════════════════════════════════════════════
   LAB SECTIONS  (shared between lab.html content & index #lab)
   ══════════════════════════════════════════════════════════ */
.lab-section {
  padding: 120px 80px; border-bottom: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.lab-section.dark { background: var(--night); }
.lab-section.mid  { background: var(--bg2); }
.lab-section.surface { background: var(--bg); }
.lab-super { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.lab-chip {
  font-family: var(--fm); font-size: 9px; letter-spacing: .16em; color: var(--accent);
  text-transform: uppercase; border: 1px solid rgba(230,57,70,0.3);
  background: rgba(230,57,70,0.06); padding: 3px 9px; border-radius: 2px;
}
.lab-chip-m {
  font-family: var(--fm); font-size: 9px; letter-spacing: .16em; color: var(--muted);
  text-transform: uppercase; border: 1px solid var(--border);
  background: transparent; padding: 3px 9px; border-radius: 2px;
}
.lab-section-h {
  font-family: var(--fd); font-size: clamp(32px,4vw,52px); font-weight: 300;
  letter-spacing: -.03em; line-height: 1.05; margin-bottom: 20px; max-width: 700px;
}
.lab-section-h em { font-style: italic; color: var(--accent); }
.lab-section-body {
  font-family: var(--fb); font-size: 17px; line-height: 1.85; color: var(--muted);
  max-width: 600px; margin-bottom: 72px;
}
.lab-section-body strong { color: var(--text); font-weight: 500; }

/* ── Lab intro hero (index #lab section) ── */
#lab {
  background: var(--night); border-bottom: 1px solid var(--border);
  padding: 0; position: relative; overflow: hidden;
}
.lab-index-hero {
  padding: 120px 80px 100px; position: relative;
}
.lab-index-hero-inner { max-width: 1100px; margin: 0 auto; }
.lab-index-grid {
  position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(90deg, rgba(255,255,255,.012) 0, rgba(255,255,255,.012) 1px, transparent 1px, transparent 160px),
              repeating-linear-gradient(0deg, rgba(255,255,255,.012) 0, rgba(255,255,255,.012) 1px, transparent 1px, transparent 160px);
}
.lab-index-watermark {
  position: absolute; font-family: var(--fd); font-size: clamp(200px,28vw,380px);
  font-weight: 800; line-height: 1; color: rgba(245,245,245,0.012);
  right: -2%; bottom: -10%; letter-spacing: -.06em; pointer-events: none; user-select: none;
}
.lab-eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 40px; }
.lab-status {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--fm); font-size: 9px; letter-spacing: .16em; color: var(--accent);
  text-transform: uppercase; padding: 4px 10px;
  border: 1px solid rgba(230,57,70,0.3); border-radius: 2px; background: rgba(230,57,70,0.06);
}
.lab-status::before {
  content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
  animation: lsb-pulse 2s ease-in-out infinite;
}
@keyframes lsb-pulse { 0%,100%{opacity:1} 50%{opacity:.3} }
.lab-eyebrow-label {
  font-family: var(--fm); font-size: 10px; letter-spacing: .18em; color: var(--muted); text-transform: uppercase;
}
.lab-index-h {
  font-family: var(--fd); font-size: clamp(52px,7vw,96px); font-weight: 300;
  line-height: .93; letter-spacing: -.04em; margin-bottom: 40px; max-width: 860px;
}
.lab-index-h em { font-style: italic; color: var(--accent); }
.lab-index-sub {
  font-family: var(--fb); font-size: 19px; line-height: 1.65; color: var(--muted);
  max-width: 540px; margin-bottom: 56px;
}
.lab-index-sub strong { color: var(--text); font-weight: 500; }
.lab-index-stats {
  display: flex; gap: 48px; padding-top: 40px; border-top: 1px solid var(--border); flex-wrap: wrap;
}
.lab-stat { display: flex; flex-direction: column; gap: 4px; }
.lab-stat-n { font-family: var(--fd); font-size: 40px; font-weight: 300; letter-spacing: -.03em; line-height: 1; }
.lab-stat-l { font-family: var(--fm); font-size: 9px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; }

/* ── Pattern Matrix ── */
.pattern-matrix { border: 1px solid var(--border); border-radius: var(--rx); overflow: hidden; }
.pm-head {
  display: grid; grid-template-columns: 1fr 1fr 1fr 1fr;
  background: rgba(0,0,0,0.4); border-bottom: 1px solid var(--border);
}
.pm-hcell {
  font-family: var(--fm); font-size: 9px; letter-spacing: .16em; color: var(--accent);
  text-transform: uppercase; padding: 12px 20px; border-right: 1px solid var(--border);
}
.pm-hcell:last-child { border-right: none; color: var(--muted); }
.pm-row {
  display: grid; grid-template-columns: 1fr 1fr 1fr 1fr;
  border-bottom: 1px solid var(--border); transition: background .15s;
}
.pm-row:last-child { border-bottom: none; }
.pm-row:hover { background: rgba(245,245,245,0.02); }
.pm-cell {
  padding: 20px; border-right: 1px solid rgba(255,255,255,0.04);
  display: flex; flex-direction: column; gap: 6px;
}
.pm-cell:last-child { border-right: none; }
.pm-cell-tag { font-family: var(--fm); font-size: 8px; letter-spacing: .12em; color: var(--accent); text-transform: uppercase; opacity: .7; }
.pm-cell-text { font-family: var(--fb); font-size: 14px; line-height: 1.55; color: rgba(245,245,245,0.55); }
.pm-cell-link {
  font-family: var(--fm); font-size: 9px; letter-spacing: .1em; color: var(--accent);
  text-decoration: none; text-transform: uppercase; display: inline-flex; align-items: center; gap: 6px;
  margin-top: 4px; transition: opacity .15s;
}
.pm-cell-link:hover { opacity: .7; }
.pm-cell.past .pm-cell-text { color: var(--muted); }
.pm-cell.agentic .pm-cell-text { color: var(--text); }

/* ── Experiment Grid ── */
.exp-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--border); border: 1px solid var(--border); border-radius: var(--rx); overflow: hidden;
}
.exp-card {
  background: var(--bg2); padding: 48px 44px; display: flex; flex-direction: column; gap: 16px;
  text-decoration: none; transition: background .28s cubic-bezier(0.625,0.05,0,1); position: relative; overflow: hidden;
}
.exp-card:hover { background: var(--bg); }
.exp-card:hover .exp-card-cta { opacity: 1; transform: translateX(0); }
.exp-num { font-family: var(--fm); font-size: 9px; letter-spacing: .2em; color: var(--accent); text-transform: uppercase; }
.exp-title { font-family: var(--fd); font-size: clamp(22px,2.5vw,34px); font-weight: 300; letter-spacing: -.025em; line-height: 1.1; }
.exp-title em { font-style: italic; color: var(--accent); }
.exp-thread {
  font-family: var(--fm); font-size: 9px; letter-spacing: .1em; color: var(--muted);
  text-transform: uppercase; display: flex; align-items: center; gap: 8px;
}
.exp-thread::before { content: ''; width: 16px; height: 1px; background: var(--border); }
.exp-desc { font-family: var(--fb); font-size: 14px; line-height: 1.72; color: var(--muted); max-width: 360px; }
.exp-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.exp-tag {
  font-family: var(--fm); font-size: 8px; letter-spacing: .1em; color: var(--muted);
  border: 1px solid var(--border); padding: 3px 9px; border-radius: 2px; text-transform: uppercase;
}
.exp-card:hover .exp-tag { border-color: rgba(230,57,70,.4); color: var(--accent); }
.exp-card-cta {
  font-family: var(--fm); font-size: 10px; letter-spacing: .12em; color: var(--accent);
  text-transform: uppercase; display: flex; align-items: center; gap: 8px;
  margin-top: auto; padding-top: 20px; opacity: 0; transform: translateX(-8px); transition: opacity .3s, transform .3s;
}
.exp-watermark {
  position: absolute; font-family: var(--fd); font-size: 120px; font-weight: 800;
  color: rgba(245,245,245,0.025); right: -10px; bottom: -20px;
  line-height: 1; letter-spacing: -.04em; pointer-events: none;
}

/* ── Juno Layer Grid ── */
.juno-layer-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--border); border: 1px solid var(--border); border-radius: var(--rx); overflow: hidden;
}
.jl-item { background: var(--bg2); padding: 36px 32px; display: flex; flex-direction: column; gap: 12px; transition: background .2s; }
.jl-item:hover { background: var(--bg3); }
.jl-icon { font-family: var(--fm); font-size: 20px; color: var(--accent); line-height: 1; }
.jl-title { font-family: var(--fd); font-size: 18px; font-weight: 400; letter-spacing: -.015em; }
.jl-body { font-family: var(--fb); font-size: 14px; line-height: 1.72; color: var(--muted); }

/* ══════════════════════════════════════════════════════════
   LAB SIDEBAR  (replaces top #lab-nav on lab-0x pages)
   ══════════════════════════════════════════════════════════ */
#lab-sidebar {
  position: fixed; top: 0; left: 0; width: 60px; height: 100vh;
  z-index: 200; display: flex; flex-direction: column; align-items: center;
  background: rgba(5,5,8,0.92); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
}
body.page-lab { margin-left: 60px; }
.lsb-back {
  width: 100%; height: 52px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: var(--muted); text-decoration: none;
  transition: color .2s; letter-spacing: 0;
}
.lsb-back:hover { color: var(--text); }
.lsb-divider { width: 28px; height: 1px; background: var(--border); flex-shrink: 0; }
.lsb-label {
  font-family: var(--fm); font-size: 7.5px; letter-spacing: .22em; color: var(--muted);
  text-transform: uppercase; writing-mode: vertical-lr; transform: rotate(180deg);
  padding: 14px 0; flex-shrink: 0; user-select: none;
}
.lsb-label em { font-style: normal; color: var(--accent); }
.lsb-sections {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 22px; position: relative; padding: 16px 0;
}
.lsb-sections::before {
  content: ''; position: absolute; top: 0; bottom: 0; left: 50%;
  width: 1px; background: rgba(255,255,255,0.06); transform: translateX(-50%); z-index: 0;
}
.lsb-progress-line {
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 1px; height: 0; background: var(--accent); z-index: 1; transition: height .08s linear;
}
.lsb-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(255,255,255,0.18); position: relative; z-index: 2;
  transition: background .2s, transform .2s; cursor: pointer; text-decoration: none;
  flex-shrink: 0; display: block;
}
.lsb-dot:hover, .lsb-dot.active { background: var(--accent); transform: scale(1.5); }
.lsb-dot::after {
  content: attr(data-label);
  position: absolute; left: calc(100% + 18px); top: 50%; transform: translateY(-50%);
  white-space: nowrap; font-family: var(--fm); font-size: 9px; letter-spacing: .14em;
  color: var(--text); text-transform: uppercase; background: rgba(5,5,8,0.95);
  padding: 5px 12px; border-radius: 2px; border: 1px solid var(--border);
  opacity: 0; pointer-events: none; transition: opacity .15s;
}
.lsb-dot:hover::after { opacity: 1; }
.lsb-exp-list {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 14px 0 20px; flex-shrink: 0;
}
.lsb-exp {
  font-family: var(--fm); font-size: 8px; letter-spacing: .14em;
  color: rgba(255,255,255,0.25); text-decoration: none; text-transform: uppercase;
  transition: color .15s; line-height: 1;
}
.lsb-exp:hover { color: var(--text); }
.lsb-exp.active { color: var(--accent); }

/* ── Lab sidebar responsive ── */
@media(max-width:768px) {
  #lab-sidebar { display: none; }
  body.page-lab { margin-left: 0; }
  .lab-mob-nav {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
    height: 48px; display: flex; align-items: center; justify-content: space-between;
    padding: 0 20px; background: rgba(5,5,8,0.95); backdrop-filter: blur(16px);
    border-top: 1px solid var(--border);
  }
  .lab-mob-back { font-family: var(--fm); font-size: 9px; letter-spacing: .12em; color: var(--muted); text-decoration: none; text-transform: uppercase; }
  .lab-mob-exps { display: flex; gap: 16px; }
  .lab-mob-exp { font-family: var(--fm); font-size: 9px; letter-spacing: .12em; color: rgba(255,255,255,0.3); text-decoration: none; }
  .lab-mob-exp.active { color: var(--accent); }
}

/* ── Lab section styles responsive ── */
@media(max-width:1024px) {
  .lab-index-hero { padding: 80px 40px; }
  .lab-section { padding: 80px 40px; }
  .pm-head,.pm-row { grid-template-columns: 1fr 1fr; }
  .pm-cell:nth-child(3),.pm-cell:nth-child(4),.pm-hcell:nth-child(3),.pm-hcell:nth-child(4) { display: none; }
}
@media(max-width:768px) {
  .lab-index-hero { padding: 64px 20px; }
  .lab-section { padding: 56px 20px; }
  .exp-grid { grid-template-columns: 1fr; }
  .juno-layer-grid { grid-template-columns: 1fr; }
  .lab-index-stats { gap: 24px; }
  .pm-head,.pm-row { grid-template-columns: 1fr; }
  .pm-cell,.pm-hcell { display: none; }
  .pm-cell:nth-child(1),.pm-cell:nth-child(4),.pm-hcell:nth-child(1),.pm-hcell:nth-child(4) { display: flex; }
}