/* =====================================================================
   Jack Jin — projects, reverse chronological · portfolio v2
   Dark editorial · one accent per project chapter · full-bleed bands
   Playfair Display / Inter / JetBrains Mono
   ===================================================================== */

:root {
  --bg: #131313;
  --bg-low: #0e0e0e;
  --surface: #1a1a19;
  --surface-2: #201f1f;
  --surface-3: #2a2a2a;
  --ink: #e8e5e3;
  --ink-soft: #b2afac;
  --ink-faint: #94908c;
  --line: rgba(255, 255, 255, 0.08);
  --line-soft: rgba(255, 255, 255, 0.05);

  /* project accents */
  --c-anima: #c0b3ff;   /* violet — the mesh */
  --c-bruce: #ff9d9d;   /* coral — the kids' games */
  --c-factory: #8fd8e8; /* cyan — the content factory */
  --c-kit: #f0cf8e;     /* gold — the toolbox */
  --c-cea: #ffc46b;     /* amber — the 24/7 agent */
  --c-conv: #b3dba0;    /* leaf green — conversion factory */
  --c-ciam: #9db8e8;    /* steel blue — identity */
  --c-postal: #d8b48f;  /* bronze — the shipping portal */
  --c-shadow: #9fe0c0;  /* mint — 2025 blueprint */
  --c-star: #e8a9b8;    /* rose — day one */
  --accent: var(--c-anima);

  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "Inter", -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --max: 1200px;
  --pad: clamp(20px, 5vw, 80px);
  --radius: 10px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background: radial-gradient(ellipse 120% 90% at 50% 0%, #1a1a1c 0%, var(--bg) 55%, var(--bg-low) 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  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='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}

::selection { background: var(--accent, #c0b3ff); color: #131313; }

img { max-width: 100%; display: block; }
a { color: inherit; }

.mono { font-family: var(--font-mono); }

/* ---------------------------------------------------------- utilities */
.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 14px;
}
.kicker::after { content: ""; height: 1px; width: 56px; background: var(--accent); opacity: 0.4; }

.kicker-sm {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* "how it was built" method line, one per chapter */
.method-line {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  margin-top: 10px;
}
.method-line b {
  font-weight: 500;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2px 7px;
  margin-right: 4px;
  white-space: nowrap;
}

/* method legend under the timeline */
.method-legend {
  margin-top: 34px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}
.method-legend ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px 28px;
}
.method-legend li {
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.55;
}
.method-legend li b {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2px 7px;
  margin-right: 6px;
  white-space: nowrap;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--bg);
  padding: 10px 18px; z-index: 200; font-family: var(--font-mono); font-size: 13px;
}
.skip-link:focus { left: 12px; top: 12px; }

/* reveal-on-scroll (plays once) */
html.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
html.js .reveal.in-view { opacity: 1; transform: none; }
html.js .d1 { transition-delay: 0.08s; }
html.js .d2 { transition-delay: 0.16s; }
html.js .d3 { transition-delay: 0.24s; }
html.js .d4 { transition-delay: 0.32s; }
html.js .d5 { transition-delay: 0.4s; }
@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1; transform: none; }
}

/* ------------------------------------------------------------- nav */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(19, 19, 19, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.brand em { font-style: italic; color: var(--ink-soft); }
.brand-mark { color: var(--accent); font-size: 16px; transition: color 0.5s; }

.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a {
  position: relative;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--ink-soft);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.25s, border-color 0.25s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); border-bottom-color: var(--accent-nav, var(--accent)); }
/* the dot separator sits outside the link's border box so the
   active underline centers on the year text itself */
.nav-num {
  color: var(--ink-faint);
  position: absolute;
  right: 100%;
  margin-right: 7px;
  top: 50%;
  transform: translateY(-50%);
}
.nav-aux { opacity: 0.85; }

.nav-toggle {
  display: none;
  background: none; border: 0; cursor: pointer;
  width: 40px; height: 40px;
  flex-direction: column; justify-content: center; align-items: center; gap: 6px;
}
.nav-toggle span { display: block; width: 20px; height: 1.5px; background: var(--ink); transition: transform 0.3s; }

.scroll-progress {
  height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--c-anima), var(--c-factory), var(--c-cea), var(--c-shadow));
}

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 62px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(16, 16, 16, 0.97);
    border-bottom: 1px solid var(--line);
    display: none;
    padding: 10px 0 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px var(--pad); width: 100%; }
  .nav-num { display: none; }
}

/* ---------------------------------------------------------- year rail */
.year-rail {
  position: fixed;
  right: 18px; top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}
.year-rail a {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-faint);
}
.year-rail a i {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--line);
  border: 1px solid rgba(255,255,255,0.18);
  transition: background 0.3s, transform 0.3s;
}
.year-rail a span {
  opacity: 0;
  transform: translateX(4px);
  transition: opacity 0.25s, transform 0.25s;
  background: rgba(14,14,14,0.9);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--line-soft);
  white-space: nowrap;
}
.year-rail a:hover span { opacity: 1; transform: none; }
.year-rail a.active i { background: var(--dot, var(--accent)); transform: scale(1.35); }
.year-rail .rail-year {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  padding-right: 1px;
  margin-top: 6px;
}
@media (max-width: 1100px) { .year-rail { display: none; } }

/* ------------------------------------------------------------- hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 130px var(--pad) 80px;
  overflow: hidden;
}
.signal-field { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-glow {
  position: absolute;
  top: -30%; right: -10%;
  width: 60vw; height: 60vw;
  background: radial-gradient(circle, rgba(192, 179, 255, 0.07) 0%, transparent 60%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 80px);
  align-items: center;
}
.hero-copy { max-width: 760px; }
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(38px, 5.6vw, 66px);
  font-weight: 600;
  line-height: 1.08;
  margin: 18px 0 22px;
}
.hero h1 em { font-style: italic; color: var(--c-anima); }
.hero-deck { max-width: 54ch; color: var(--ink-soft); font-size: clamp(15px, 1.5vw, 17.5px); }
.hero-actions { margin-top: 30px; display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }

.button {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 13px 22px;
  border-radius: 6px;
  border: 1px solid var(--line);
  transition: transform 0.25s, background 0.25s, border-color 0.25s;
}
.button-primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.button-primary:hover { transform: translateY(-2px); }
.text-link {
  font-family: var(--font-mono); font-size: 13px;
  color: var(--ink-soft); text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: color 0.25s, border-color 0.25s;
}
.text-link:hover { color: var(--ink); border-color: var(--ink-soft); }

.hero-links { margin-top: 26px; display: flex; gap: 22px; flex-wrap: wrap; }
.hero-links a {
  font-family: var(--font-mono); font-size: 12px;
  color: var(--ink-faint); text-decoration: none;
  transition: color 0.25s;
}
.hero-links a:hover { color: var(--ink); }

.hero-index {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 26px 20px;
  background: rgba(26, 26, 25, 0.55);
  backdrop-filter: blur(6px);
}
.index-kicker {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 16px;
}
.cred-list { list-style: none; }
.cred-list li {
  display: flex; gap: 12px; align-items: baseline;
  padding: 9px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  color: var(--ink-soft);
}
.cred-list li:first-child { border-top: 0; }
.cred-list .mono { font-size: 11px; color: var(--c-anima); flex-shrink: 0; width: 42px; }

.hero-cue {
  position: absolute;
  bottom: 84px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-faint);
}
.hero-cue i {
  width: 1px; height: 34px;
  background: linear-gradient(var(--ink-faint), transparent);
  animation: cue-drop 2.2s ease-in-out 3;
}
@keyframes cue-drop {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); }
  100% { opacity: 0.2; }
}
.hero-foot {
  position: absolute;
  bottom: 26px; left: var(--pad); right: var(--pad);
  display: flex; align-items: center; gap: 20px;
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint);
}
.scroll-line { flex: 1; height: 1px; background: var(--line); }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-cue { display: none; }
  .hero-foot span:last-child { display: none; }
}

/* --------------------------------------------------------- timeline */
.timeline-section { padding: 90px var(--pad) 60px; }
.timeline-inner { max-width: var(--max); margin: 0 auto; }
.timeline-head h2, .career h2, .workbench-section h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 600;
  margin: 14px 0 10px;
}
.timeline-head em, .career em, .workbench-section em { font-style: italic; color: var(--accent); }
.timeline-hint { color: var(--ink-faint); font-size: 13.5px; font-family: var(--font-mono); }

.gantt {
  margin-top: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 22px 22px 16px;
  overflow-x: auto;
}
.gantt-scale {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
  padding: 0 0 12px 172px;
  min-width: 660px;
}
.gantt-row {
  display: grid;
  grid-template-columns: 172px 1fr;
  align-items: center;
  min-width: 660px;
  padding: 3px 0;
}
.gantt-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
  padding-right: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.gantt-track { position: relative; height: 18px; }
.gantt-track::before {
  content: "";
  position: absolute; inset: 8px 0;
  height: 1px;
  background: var(--line-soft);
}
.gantt-bar {
  position: absolute;
  top: 2px; height: 14px;
  border-radius: 7px;
  background: color-mix(in srgb, var(--bar) 30%, transparent);
  border: 1px solid color-mix(in srgb, var(--bar) 75%, transparent);
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
  min-width: 10px;
}
.gantt-bar:hover, .gantt-bar:focus-visible {
  background: color-mix(in srgb, var(--bar) 55%, transparent);
  transform: scaleY(1.15);
  outline: none;
}
.gantt-bar::after {
  content: attr(data-title);
  position: absolute;
  bottom: calc(100% + 6px); left: 0;
  background: #0c0c0c;
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10.5px;
  padding: 4px 9px;
  border-radius: 5px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 5;
}
.gantt-bar:hover::after, .gantt-bar:focus-visible::after { opacity: 1; }
.gantt-now {
  position: absolute; top: 0; bottom: 0;
  width: 1px;
  background: rgba(255,255,255,0.22);
}

/* ----------------------------------------------------------- career */
.career { padding: 60px var(--pad) 90px; }
.career-inner { max-width: 900px; margin: 0 auto; }
.milestone-list { list-style: none; margin-top: 26px; }
.milestone-list li {
  display: flex; gap: 18px; align-items: baseline;
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
  color: var(--ink-soft);
  font-size: 15px;
}
.milestone-list .mono { color: var(--accent); font-size: 12px; flex-shrink: 0; width: 76px; }
.cred-strip { margin-top: 22px; color: var(--ink-faint); font-size: 11.5px; letter-spacing: 0.03em; line-height: 1.9; }

/* --------------------------------------------------------- dividers */
.tdiv {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 34px var(--pad);
  max-width: calc(var(--max) + 2 * var(--pad));
  margin: 0 auto;
}
.tdiv .mono {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  white-space: nowrap;
}
.tdiv i { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, var(--line), transparent); }
/* labels don't fit one row on phones; let the second one wrap under the rule */
@media (max-width: 700px) {
  .tdiv { flex-wrap: wrap; row-gap: 4px; }
  .tdiv i { min-width: 40px; }
}

.year-band {
  position: relative;
  padding: clamp(60px, 10vw, 120px) var(--pad);
  text-align: center;
  overflow: hidden;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(159, 224, 192, 0.03), transparent 70%);
}
.year-big {
  font-family: var(--font-display);
  font-size: clamp(90px, 18vw, 220px);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.12);
  display: block;
}
.year-note { margin-top: 8px; color: var(--ink-faint); font-size: 11.5px; letter-spacing: 0.2em; text-transform: uppercase; }

/* --------------------------------------------------------- chapters */
.chapter {
  --accent: var(--ink-soft);
  position: relative;
  padding: clamp(70px, 9vw, 120px) var(--pad);
  border-top: 1px solid var(--line-soft);
}
/* full-bleed tinted band per project */
.chapter::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 90% 55% at 50% 0%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 70%),
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 4%, transparent), transparent 30%, transparent 78%, color-mix(in srgb, var(--accent) 3%, transparent));
}
/* per-chapter motif layer */
.chapter::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
}

#ch-anima { --accent: var(--c-anima); }
#ch-anima::after {
  background-image: radial-gradient(circle 1.5px at 12% 22%, rgba(192,179,255,0.35) 99%, transparent), radial-gradient(circle 1px at 34% 64%, rgba(192,179,255,0.28) 99%, transparent), radial-gradient(circle 1.5px at 58% 18%, rgba(192,179,255,0.3) 99%, transparent), radial-gradient(circle 1px at 78% 48%, rgba(192,179,255,0.26) 99%, transparent), radial-gradient(circle 1.5px at 90% 76%, rgba(192,179,255,0.3) 99%, transparent), radial-gradient(circle 1px at 22% 86%, rgba(192,179,255,0.24) 99%, transparent);
  background-size: 900px 700px;
  background-repeat: repeat;
  opacity: 0.35;
}
#ch-bruce { --accent: var(--c-bruce); }
#ch-bruce::after {
  background-image: linear-gradient(rgba(255,157,157,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,157,157,0.05) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.28;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000, transparent 80%);
          mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000, transparent 80%);
}
#ch-factory { --accent: var(--c-factory); }
#ch-factory::after {
  background-image: repeating-linear-gradient(90deg, rgba(143,216,232,0.05) 0 1px, transparent 1px 120px);
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(#000 30%, transparent);
          mask-image: linear-gradient(#000 30%, transparent);
}
#ch-kit { --accent: var(--c-kit); }
#ch-kit::after {
  background-image: linear-gradient(rgba(240,207,142,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(240,207,142,0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.4;
  -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 20%, #000, transparent 85%);
          mask-image: radial-gradient(ellipse 80% 50% at 50% 20%, #000, transparent 85%);
}
#ch-conv { --accent: var(--c-conv); }
#ch-conv::after {
  background-image: repeating-linear-gradient(90deg, rgba(179,219,160,0.05) 0 1px, transparent 1px 50%), linear-gradient(90deg, rgba(179,219,160,0.02) 50%, transparent 50%);
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(#000 30%, transparent 80%);
          mask-image: linear-gradient(#000 30%, transparent 80%);
}
#ch-cea { --accent: var(--c-cea); }
#ch-cea::before {
  background:
    radial-gradient(ellipse 90% 55% at 50% 0%, rgba(255, 196, 107, 0.08), transparent 70%),
    linear-gradient(180deg, rgba(20, 17, 12, 0.9), rgba(19, 19, 19, 0) 40%);
}
#ch-cea::after {
  background-image: repeating-linear-gradient(0deg, rgba(255,196,107,0.04) 0 1px, transparent 1px 90px), repeating-linear-gradient(90deg, rgba(255,196,107,0.04) 0 1px, transparent 1px 90px);
  opacity: 0.6;
  -webkit-mask-image: linear-gradient(#000 20%, transparent 70%);
          mask-image: linear-gradient(#000 20%, transparent 70%);
}
#ch-ciam { --accent: var(--c-ciam); }
#ch-ciam::after {
  background-image: repeating-linear-gradient(45deg, rgba(157,184,232,0.04) 0 1px, transparent 1px 54px);
  opacity: 0.5;
}
#ch-postal { --accent: var(--c-postal); }
#ch-postal::after {
  background-image: linear-gradient(rgba(216,180,143,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(216,180,143,0.05) 1px, transparent 1px);
  background-size: 90px 90px;
  opacity: 0.35;
}
#ch-shadow { --accent: var(--c-shadow); }
#ch-shadow::after {
  background-image: linear-gradient(rgba(159,224,192,0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(159,224,192,0.045) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  -webkit-mask-image: radial-gradient(ellipse 75% 55% at 50% 25%, #000, transparent 85%);
          mask-image: radial-gradient(ellipse 75% 55% at 50% 25%, #000, transparent 85%);
}
#ch-star { --accent: var(--c-star); }
#ch-star::after { background: none; }

.chapter-head {
  max-width: var(--max);
  margin: 0 auto clamp(40px, 6vw, 80px);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(20px, 4vw, 60px);
  align-items: start;
}
.chapter-num {
  font-family: var(--font-display);
  font-size: clamp(60px, 9vw, 130px);
  font-weight: 700;
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px color-mix(in srgb, var(--accent) 55%, transparent);
}
.chapter-title-block h2 {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.4vw, 54px);
  font-weight: 600;
  line-height: 1.12;
  margin: 14px 0 18px;
}
.chapter-title-block h2 em { font-style: italic; color: var(--accent); font-size: 0.72em; display: block; margin-top: 6px; }
.thesis { max-width: 62ch; color: var(--ink-soft); font-size: clamp(15px, 1.5vw, 17px); }
.arc { max-width: 62ch; color: var(--ink-faint); font-size: 14px; margin-top: 14px; }
.arc .mono { font-size: 12.5px; color: var(--accent); }

.flagship .chapter-title-block h2 { font-size: clamp(34px, 5.2vw, 64px); }

@media (max-width: 700px) {
  .chapter-head { grid-template-columns: 1fr; gap: 8px; }
}

/* ----------------------------------------------------------- stories */
.story {
  max-width: var(--max);
  margin: 0 auto clamp(60px, 8vw, 110px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(26px, 4vw, 64px);
  align-items: center;
}
.story.flip .story-media { order: 2; }
.story.flip .story-text { order: 1; }
.story.wide { display: block; }
.story:last-child { margin-bottom: 0; }

/* stack the side-by-side stories on small screens: text first, media below */
@media (max-width: 860px) {
  .story {
    grid-template-columns: 1fr;
    gap: 26px;
    align-items: start;
  }
  .story .story-text { order: 1; }
  .story .story-media { order: 2; }
}

.story-meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 12px;
}
.story-meta time { color: var(--accent); }
.story h3 {
  font-family: var(--font-display);
  font-size: clamp(23px, 2.6vw, 32px);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 12px;
}
.story h3 em { font-style: italic; color: var(--accent); }
.pattern-line {
  color: var(--ink);
  font-size: 15.5px;
  font-weight: 500;
  margin-bottom: 12px;
}
.story-text > p:not(.pattern-line):not(.story-meta):not(.proof-links) { color: var(--ink-soft); font-size: 15px; }
/* space between consecutive plain body paragraphs (multi-paragraph stories) */
.story-text > p:not(.pattern-line):not(.story-meta):not(.proof-links) + p:not(.pattern-line):not(.proof-links) { margin-top: 14px; }
.story-text.center { max-width: 760px; margin: 0 auto 34px; text-align: center; }
.story-text.center .story-meta { justify-content: center; }
.ciam-text { margin-top: 30px; }

.pull-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--ink);
  border-left: 2px solid var(--accent);
  padding: 6px 0 6px 18px;
  margin: 18px 0;
}

.proof-links { margin-top: 18px; display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
.proof-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  padding-bottom: 2px;
  transition: border-color 0.25s;
}
.proof-links a:hover { border-color: var(--accent); }

/* ------------------------------------------------- link type system
   one icon per destination type, everywhere on the page:
   git-branch = source repo · globe = deployed/live · "in" badge = LinkedIn */
a.link-repo::before, a.link-post::before, a.link-live::before, a.link-video::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 7px;
  vertical-align: -1.5px;
  background: currentColor;
  -webkit-mask: var(--licon) center / contain no-repeat;
          mask: var(--licon) center / contain no-repeat;
}
a.link-repo::before {
  --licon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='4' cy='3.5' r='1.7' fill='none' stroke='black' stroke-width='1.6'/%3E%3Ccircle cx='4' cy='12.5' r='1.7' fill='none' stroke='black' stroke-width='1.6'/%3E%3Ccircle cx='12' cy='3.5' r='1.7' fill='none' stroke='black' stroke-width='1.6'/%3E%3Cpath d='M4 5.2v5.6M12 5.2c0 3.4-4 3-6.5 4.6' fill='none' stroke='black' stroke-width='1.6'/%3E%3C/svg%3E");
}
a.link-live::before {
  --licon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='6.2' fill='none' stroke='black' stroke-width='1.5'/%3E%3Cellipse cx='8' cy='8' rx='2.7' ry='6.2' fill='none' stroke='black' stroke-width='1.2'/%3E%3Cpath d='M1.8 8h12.4' stroke='black' stroke-width='1.2'/%3E%3C/svg%3E");
}
a.link-post::before {
  --licon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Crect x='1.2' y='1.2' width='13.6' height='13.6' rx='2.6' fill='none' stroke='black' stroke-width='1.5'/%3E%3Ccircle cx='5.1' cy='5.3' r='1.15' fill='black'/%3E%3Crect x='4.2' y='7.4' width='1.8' height='4.4' fill='black'/%3E%3Cpath d='M8.2 11.8V9.2c0-2 3.4-2 3.4 0v2.6' fill='none' stroke='black' stroke-width='1.8'/%3E%3C/svg%3E");
}
a.link-video::before {
  --licon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Crect x='1.2' y='2.6' width='13.6' height='10.8' rx='2.8' fill='none' stroke='black' stroke-width='1.5'/%3E%3Cpath d='M6.6 5.6l3.8 2.4-3.8 2.4z' fill='black'/%3E%3C/svg%3E");
}
.proof-links a.link-video { color: var(--ink-soft); border-bottom-color: rgba(255, 255, 255, 0.18); }
/* per-type color inside proof-links: live pops in the chapter accent,
   repos stay neutral ink, posts recede slightly */
.proof-links a.link-repo { color: var(--ink); border-bottom-color: rgba(255, 255, 255, 0.25); }
.proof-links a.link-repo:hover { border-bottom-color: var(--ink); }
.proof-links a.link-post { color: var(--ink-soft); border-bottom-color: rgba(255, 255, 255, 0.18); }
.proof-links a.link-post:hover { border-bottom-color: var(--ink-soft); }
.proof-links a.link-live { color: var(--accent); }

/* cards that ARE repo links get the branch icon on their title */
.repo-card h4::before, .tool-card .tool-name::before {
  content: "";
  display: inline-block;
  width: 11px;
  height: 11px;
  margin-right: 6px;
  vertical-align: -1px;
  opacity: 0.65;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='4' cy='3.5' r='1.7' fill='none' stroke='black' stroke-width='1.6'/%3E%3Ccircle cx='4' cy='12.5' r='1.7' fill='none' stroke='black' stroke-width='1.6'/%3E%3Ccircle cx='12' cy='3.5' r='1.7' fill='none' stroke='black' stroke-width='1.6'/%3E%3Cpath d='M4 5.2v5.6M12 5.2c0 3.4-4 3-6.5 4.6' fill='none' stroke='black' stroke-width='1.6'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='4' cy='3.5' r='1.7' fill='none' stroke='black' stroke-width='1.6'/%3E%3Ccircle cx='4' cy='12.5' r='1.7' fill='none' stroke='black' stroke-width='1.6'/%3E%3Ccircle cx='12' cy='3.5' r='1.7' fill='none' stroke='black' stroke-width='1.6'/%3E%3Cpath d='M4 5.2v5.6M12 5.2c0 3.4-4 3-6.5 4.6' fill='none' stroke='black' stroke-width='1.6'/%3E%3C/svg%3E") center / contain no-repeat;
}
.center-links { justify-content: center; }
.private-tag {
  font-size: 11px;
  color: var(--ink-faint);
  border: 1px dashed var(--line);
  border-radius: 5px;
  padding: 4px 10px;
  cursor: help;
}

.stat-chips { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 18px; }
.center-chips { justify-content: center; margin-top: 26px; }
.stat {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 12px;
  background: rgba(26, 26, 25, 0.5);
}
.stat b { color: var(--accent); font-weight: 700; margin-right: 4px; }

/* frames & panels */
.frame {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.frame img { width: 100%; }
.frame figcaption {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  letter-spacing: 0.02em;
}
.frame.sub { margin-top: 18px; }
.frame.portrait { max-width: 340px; }
.diagram-frame { max-width: 1040px; margin: 0 auto; }
.diagram-frame a { display: block; background: #f4f2ee; }
.diagram-frame img { width: 100%; }
.tall-diagram { max-width: 680px; }

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 22px;
}
.panel-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 16px;
}
.panel-note { font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); margin-top: 14px; }
.panel-wide {
  max-width: var(--max);
  margin: 0 auto clamp(60px, 8vw, 100px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(26, 26, 25, 0.6);
  padding: clamp(22px, 3vw, 40px);
}

/* replay affordance */
.replay {
  margin-top: 14px;
  background: none;
  border: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 11px;
  border-radius: 5px;
  padding: 5px 12px;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s;
}
.replay:hover { color: var(--ink); border-color: var(--ink-faint); }

/* ------------------------------------------------- anima specifics */
.diagram-deck { max-width: 1040px; margin: 0 auto; }
.deck-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.deck-tab {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  background: none;
  color: var(--ink-faint);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 14px;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}
.deck-tab:hover { color: var(--ink); }
.deck-tab.active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}
.deck-pane { display: none; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.deck-pane.active { display: block; }
.deck-pane a { display: block; background: #f4f2ee; }
.deck-pane img { width: 100%; }
.deck-pane figcaption {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
}

.pulse-svg { width: 100%; height: 90px; display: block; }
#pulse-line {
  stroke: var(--accent);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.pulse-panel.run #pulse-line {
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: pulse-draw 2.8s cubic-bezier(0.3, 0, 0.2, 1) forwards;
}
@keyframes pulse-draw { to { stroke-dashoffset: 0; } }
.pulse-stats { margin-top: 8px; }

.counter-row { display: flex; gap: 14px; flex-wrap: wrap; }
.counter {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-faint);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 12px;
}
.counter b { display: block; font-size: 21px; color: var(--ink); font-weight: 700; }
.counter.accent-counter b, .counter.fail b { color: var(--accent); }

.glossary .gloss-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.gloss-chip {
  font-family: var(--font-mono);
  font-size: 11.5px;
  background: none;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 14px;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}
.gloss-chip:hover { color: var(--ink); border-color: var(--ink-faint); }
.gloss-chip.lit { color: var(--bg); background: var(--accent); border-color: var(--accent); }
.gloss-readout {
  margin-top: 16px;
  min-height: 64px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-soft);
  border-top: 1px solid var(--line-soft);
  padding-top: 14px;
}

/* edge / aside */
.edge { }
.edge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 3vw, 48px);
  margin-top: 18px;
}
.edge-col h4 { font-family: var(--font-display); font-size: 19px; margin-bottom: 8px; }
.edge-col p { color: var(--ink-soft); font-size: 14.5px; }
.edge-col .accent { color: var(--accent); }
.edge-close {
  margin-top: 22px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 17px;
  color: var(--ink);
}
@media (max-width: 700px) { .edge-grid { grid-template-columns: 1fr; } }

/* ------------------------------------------------- bruce specifics */
.bruce-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  max-width: 980px;
  margin: 0 auto;
}
.bruce-card {
  display: block;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 26px;
  transition: transform 0.25s, border-color 0.25s;
}
.bruce-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 55%, transparent); }
.bruce-card h3 { font-family: var(--font-display); font-size: 24px; margin: 10px 0; }
.bruce-card p { color: var(--ink-soft); font-size: 14px; }
.bruce-dates { font-size: 11px; color: var(--accent); }
.bruce-link { display: block; margin-top: 16px; font-size: 11px; color: var(--ink-faint); }
.bruce-note {
  max-width: 980px;
  margin: 26px auto 0;
  text-align: center;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 17px;
  color: var(--ink-soft);
}
@media (max-width: 700px) { .bruce-grid { grid-template-columns: 1fr; } }

/* ----------------------------------------------- factory specifics */
.beforeafter .ba-rows { display: flex; flex-direction: column; gap: 0; }
.ba-row {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 14px;
  padding: 13px 0;
  border-top: 1px solid var(--line-soft);
  align-items: baseline;
}
.ba-row:first-child { border-top: 0; }
.ba-tag { font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); }
.ba-mid .ba-tag { color: var(--accent); }
.ba-row p { font-size: 13.5px; color: var(--ink-soft); }

.request-flow {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
}
.rf-node {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 20px;
  font-size: 13px;
  background: var(--surface-2);
}
.rf-wire { position: relative; height: 2px; background: var(--line); border-radius: 1px; }
.rf-dot {
  position: absolute;
  top: -3px; left: 0;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
}
.request-flow.run .rf-dot { animation: rf-go 2.4s ease-in-out 2; }
.request-flow.run .rf-dot.back { animation: rf-back 2.4s ease-in-out 2; }
@keyframes rf-go { 0% { left: 0; opacity: 0; } 12% { opacity: 1; } 46% { left: calc(100% - 8px); opacity: 1; } 55%, 100% { opacity: 0; } }
@keyframes rf-back { 0%, 48% { left: calc(100% - 8px); opacity: 0; } 58% { opacity: 1; } 92% { left: 0; opacity: 1; } 100% { opacity: 0; } }
.rf-note { grid-column: 1 / -1; }

/* ---------------------------------------------------- cea specifics */
.cea-lifetime { text-align: center; }
.cea-lifetime .counter-row { justify-content: center; margin-top: 18px; }
.cea-lifetime .edge-close { font-size: 16px; }

.ladder { max-width: 880px; margin: 0 auto; }
.era { position: relative; padding-left: clamp(18px, 3vw, 34px); margin-bottom: 42px; }
.era::before {
  content: "";
  position: absolute;
  left: 0; top: 8px; bottom: -34px;
  width: 1px;
  background: linear-gradient(color-mix(in srgb, var(--accent) 55%, transparent), var(--line));
}
.era:last-child::before { bottom: 8px; }
.era-title {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.rung {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: clamp(14px, 2.5vw, 28px);
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
  position: relative;
}
.rung::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(18px, 3vw, 34px) - 3.5px);
  top: 26px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bg);
  border: 1.5px solid var(--accent);
}
.rung-v {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  padding-top: 2px;
}
.rung-date { display: block; font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 6px; }
.rung-body h4 { font-family: var(--font-display); font-size: 19px; margin-bottom: 6px; }
.rung-body p { color: var(--ink-soft); font-size: 14px; }
@media (max-width: 600px) { .rung { grid-template-columns: 1fr; gap: 4px; } }

.bakeoff .bake-rows { display: flex; flex-direction: column; gap: 13px; }
.bake-row {
  display: grid;
  grid-template-columns: 110px 1fr 40px;
  align-items: center;
  gap: 12px;
}
.bake-name { font-size: 11.5px; color: var(--ink-soft); }
.bake-bar {
  display: block;
  height: 12px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 32%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 60%, transparent);
  width: 0;
}
.bakeoff.run .bake-bar { transition: width 1.4s cubic-bezier(0.16, 1, 0.3, 1); }
.bake-score { font-size: 13px; color: var(--accent); text-align: right; }

/* --------------------------------------------------- ciam specifics */
.ciam-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 2.5vw, 26px);
  flex-wrap: wrap;
  text-align: center;
}
.ciam-node {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  padding: 20px 26px;
  min-width: 190px;
}
.ciam-node .mono { font-size: 14px; color: var(--accent); }
.ciam-node p { font-size: 12px; color: var(--ink-faint); margin-top: 6px; font-family: var(--font-mono); }
.ciam-arrow { color: var(--ink-faint); font-size: 20px; }
/* stacked on phones: arrows point down between the tiers */
@media (max-width: 700px) {
  .ciam-flow { flex-direction: column; }
  .ciam-node { width: 100%; }
  .ciam-arrow { transform: rotate(90deg); }
}

/* --------------------------------------------------- repo card grid */
.repo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  max-width: var(--max);
  margin: 0 auto;
}
.repo-card {
  display: block;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 22px;
  transition: transform 0.25s, border-color 0.25s;
}
.repo-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 55%, transparent); }
.repo-card h4 { font-family: var(--font-mono); font-size: 14px; margin: 8px 0; color: var(--ink); }
.repo-card p { font-size: 13px; color: var(--ink-soft); }
.rc-dates { font-size: 10.5px; color: var(--accent); }

/* ---------------------------------------------------------- carousel */
.carousel {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 10px;
  scrollbar-width: thin;
  max-width: var(--max);
  margin: 0 auto;
}
.carousel .slide {
  flex: 0 0 min(78%, 680px);
  scroll-snap-align: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.carousel .slide img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.carousel .slide figcaption {
  padding: 12px 16px;
  font-size: 12.5px;
  color: var(--ink-soft);
}
.carousel .slide figcaption a { color: var(--accent); }
.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 14px;
}
.carousel-controls button {
  background: none;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  width: 38px; height: 38px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 15px;
  transition: color 0.25s, border-color 0.25s;
}
.carousel-controls button:hover { color: var(--ink); border-color: var(--ink-faint); }
.carousel-count { font-size: 11.5px; color: var(--ink-faint); }

/* ------------------------------------------------------ video facade */
.video-embed {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 60px -28px rgba(0, 0, 0, 0.75);
}
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-facade {
  position: absolute;
  inset: 0;
  width: 100%;
  border: 0;
  padding: 0;
  cursor: pointer;
  background: var(--surface);
  display: block;
}
.video-facade img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.72;
  filter: saturate(0.85);
  transition: opacity 0.35s, filter 0.35s, transform 0.6s ease;
}
.video-facade:hover img { opacity: 0.95; filter: none; transform: scale(1.02); }
.video-facade .play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(14, 14, 14, 0.82);
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s, box-shadow 0.3s;
}
.video-facade:hover .play { background: var(--accent); box-shadow: 0 0 30px -6px var(--accent); }
.video-facade .play::after {
  content: "";
  border-left: 16px solid var(--accent);
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  margin-left: 4px;
  transition: border-left-color 0.3s;
}
.video-facade:hover .play::after { border-left-color: var(--bg); }
.video-facade .vf-title {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 30px 18px 14px;
  background: linear-gradient(transparent, rgba(10, 10, 10, 0.9));
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  text-align: left;
}

/* ------------------------------------------------------ lofi chapter */
.lofi .chapter-num { -webkit-text-stroke-color: rgba(232, 169, 184, 0.4); }
.lofi .thesis { font-size: 15px; }

/* --------------------------------------------------------- workbench */
.workbench-section { padding: clamp(70px, 9vw, 110px) var(--pad); border-top: 1px solid var(--line-soft); --accent: var(--ink-soft); }
.workbench-inner { max-width: var(--max); margin: 0 auto; }
.workbench-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 30px;
}
.tool-card {
  display: block;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 20px;
  transition: transform 0.25s, border-color 0.25s;
}
.tool-card:hover { transform: translateY(-3px); border-color: var(--ink-faint); }
.tool-name { font-size: 12.5px; color: var(--ink); display: block; }
.tool-card p { font-size: 12.5px; color: var(--ink-soft); margin: 8px 0 12px; }
.tool-meta { font-size: 10.5px; color: var(--ink-faint); }

/* ---------------------------------------------------------- lightbox
   built by script.js; anchors keep their href as the no-js fallback */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  flex-direction: column;
  background: rgba(12, 12, 12, 0.94);
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  opacity: 0;
  transition: opacity 0.25s ease;
}
.lightbox.open { opacity: 1; }
.lightbox[hidden] { display: none; }

.lightbox-top {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 10px clamp(14px, 3vw, 26px);
  border-bottom: 1px solid var(--line-soft);
}
.lightbox-file, .lightbox-zoom {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  text-decoration: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 9px 13px;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s;
}
.lightbox-file:hover, .lightbox-zoom:hover { color: var(--ink); border-color: var(--ink-faint); }
.lightbox-close {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: none;
  color: var(--ink);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s, transform 0.25s;
}
.lightbox-close:hover { border-color: var(--ink-faint); transform: rotate(90deg); }

.lightbox-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(14px, 3vw, 30px);
}
.lightbox-body img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 6px;
  cursor: zoom-in;
}
.lightbox-body img.light-plate { background: #f4f2ee; }
/* zoomed: natural size, pan by scrolling */
.lightbox.zoomed .lightbox-body { display: block; }
.lightbox.zoomed .lightbox-body img { max-width: none; max-height: none; margin: 0 auto; cursor: zoom-out; }

.lightbox-caption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--ink-soft);
  padding: 12px clamp(14px, 3vw, 26px);
  border-top: 1px solid var(--line-soft);
  max-height: 5.4em;
  overflow-y: auto;
}
.lightbox-caption:empty { display: none; }

/* page behind the overlay must not scroll */
html.lightbox-open { overflow: hidden; }

/* images that open the lightbox without being links */
.lb-zoomable { cursor: zoom-in; }

/* ------------------------------------------------------------ footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 60px var(--pad) 40px;
}
.footer-inner { max-width: var(--max); margin: 0 auto; }
.footer-thesis {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(17px, 2vw, 21px);
  max-width: 56ch;
  color: var(--ink-soft);
}
.footer-links { display: flex; gap: 24px; margin: 26px 0 18px; flex-wrap: wrap; }
.footer-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 0.25s;
}
.footer-links a:hover { color: var(--ink); }
.footer-colophon { font-size: 10.5px; color: var(--ink-faint); letter-spacing: 0.06em; }