.patterns-page {
  --patterns-bg: #f6f6f2;
  --patterns-paper: #ffffff;
  --patterns-ink: #121316;
  --patterns-muted: #5a606b;
  --patterns-line: #d8d9d5;
  --patterns-blue: #0f62fe;
  --patterns-pink: #d12769;
  --patterns-warm: #f4e8df;
  --patterns-shadow: 0 20px 60px rgba(18, 19, 22, 0.12);
  margin: 0;
  max-width: none;
  padding: 0;
  overflow-x: hidden;
  background: var(--patterns-bg);
  color: var(--patterns-ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.62;
}

html[data-theme="dark"] .patterns-page {
  --patterns-bg: #101114;
  --patterns-paper: #181a1f;
  --patterns-ink: #f5f5f0;
  --patterns-muted: #adb1ba;
  --patterns-line: #353840;
  --patterns-blue: #78a9ff;
  --patterns-pink: #ff7eb6;
  --patterns-warm: #2b211d;
  --patterns-shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
}

.patterns-page *,
.patterns-page *::before,
.patterns-page *::after { box-sizing: border-box; }
.patterns-page img { display: block; max-width: 100%; }
.patterns-page button { font: inherit; }
.patterns-page section[id] { scroll-margin-top: 88px; }
.patterns-shell { width: min(calc(100% - 42px), 1220px); margin-inline: auto; }
.patterns-serif,
.patterns-page h1,
.patterns-page h2,
.patterns-page h3 { font-family: Georgia, "Times New Roman", serif; letter-spacing: -0.035em; }
.patterns-chapter-meta {
  margin: 0;
  color: var(--patterns-blue);
  font: 600 11px/1.45 "Source Code Pro", ui-monospace, monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.patterns-chapter-meta { color: var(--patterns-muted); font-size: 9px; letter-spacing: 0.07em; }

.patterns-hero-field { position: relative; overflow: hidden; border-bottom: 1px solid var(--patterns-line); }
.patterns-hero-field::before {
  content: "";
  position: absolute;
  inset: 0 0 0 46%;
  background: repeating-linear-gradient(166deg, transparent 0 19px, color-mix(in srgb, var(--patterns-blue) 15%, transparent) 20px 21px);
  mask-image: linear-gradient(90deg, transparent, black);
  pointer-events: none;
}
.patterns-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas: "copy" "visual";
  gap: 2rem;
  align-items: end;
  padding: clamp(4rem, 7vw, 6rem) 0 5.5rem;
}
.patterns-hero-copy { grid-area: copy; max-width: 760px; }
.patterns-page h1 { max-width: 9ch; margin: 0.6rem 0 1.4rem; font-size: clamp(3.6rem, 7.7vw, 7.5rem); line-height: 0.93; }
.patterns-thesis { max-width: 29ch; margin: 0; font: 400 clamp(1.3rem, 2vw, 1.85rem)/1.38 Georgia, "Times New Roman", serif; }
.patterns-hero-visual { grid-area: visual; margin: 1.6rem 0 0; }
.patterns-hero-frame { position: relative; height: clamp(420px, 42vw, 560px); overflow: hidden; border: 1px solid var(--patterns-line); background: #fff; box-shadow: 0 28px 80px rgba(18, 19, 22, 0.16); }
.patterns-hero-image { --patterns-pan: -28%; position: absolute; left: -10%; top: 0; width: 120%; max-width: none; height: auto; animation: patterns-hero-pan 24s ease-in-out infinite; will-change: transform, opacity; }
.patterns-hero-visual.is-paused .patterns-hero-image { animation-play-state: paused; }
.patterns-motion-toggle { border: 1px solid rgba(255,255,255,.72); background: rgba(7,30,73,.92); color: #fff; font: 600 10px "Source Code Pro", monospace; letter-spacing: .08em; }
.patterns-motion-toggle:focus-visible { outline: 3px solid var(--patterns-pink); outline-offset: 2px; }
@keyframes patterns-hero-pan { 0%,14% { transform: translateY(0); opacity: 1; } 80%,91% { transform: translateY(var(--patterns-pan)); opacity: 1; } 95% { transform: translateY(var(--patterns-pan)); opacity: 0; } 96% { transform: translateY(0); opacity: 0; } 100% { transform: translateY(0); opacity: 1; } }

.patterns-evidence-caption { display: block; padding: 0.75rem 0 0; color: var(--patterns-muted); font-size: 0.84rem; line-height: 1.55; }
.patterns-evidence-caption b { display: block; margin-bottom: 0.28rem; color: var(--patterns-ink); font: 600 10px/1.3 "Source Code Pro", monospace; letter-spacing: .07em; }
.patterns-source-note { max-width: 58rem; margin-top: 1.25rem; padding: .2rem 0 .2rem 1rem; border-left: 2px solid var(--patterns-line); color: var(--patterns-muted); font-size: .78rem; line-height: 1.55; }
.patterns-note-label { display: block; margin-bottom: .3rem; color: var(--patterns-ink); font: 600 9px/1.3 "Source Code Pro", monospace; letter-spacing: .08em; text-transform: uppercase; }

.patterns-chapter { padding: clamp(5rem, 9vw, 8rem) 0; border-bottom: 1px solid var(--patterns-line); }
.patterns-chapter-head { display: grid; grid-template-columns: minmax(0, 7fr) minmax(260px, 4fr); gap: clamp(2rem, 7vw, 7rem); align-items: end; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.patterns-chapter h2 { max-width: 12ch; margin: .4rem 0 0; font-size: clamp(3rem, 6vw, 6.2rem); line-height: .98; }
.patterns-chapter-intro { max-width: 42rem; margin: 0; color: var(--patterns-muted); font: 400 clamp(1.08rem, 1.7vw, 1.25rem)/1.55 Georgia, "Times New Roman", serif; }
.patterns-prose { max-width: 720px; color: var(--patterns-ink); font-size: 1.08rem; line-height: 1.82; }
.patterns-prose strong { color: var(--patterns-blue); }
.patterns-origin-inner { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(300px, .88fr); gap: 2rem clamp(3rem, 7vw, 7rem); }
.patterns-origin-inner .patterns-chapter-head { display: block; grid-column: 1; margin: 0; }
.patterns-origin-inner .patterns-chapter-intro { margin-top: 2rem; }
.patterns-origin-inner .patterns-prose { grid-column: 2; align-self: end; }
.patterns-context-boundary { margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--patterns-line); color: var(--patterns-muted); font-size: .94rem; }
.patterns-context-boundary strong { display: block; margin-bottom: .5rem; color: var(--patterns-ink); font: 600 10px/1.4 "Source Code Pro", monospace; letter-spacing: .08em; text-transform: uppercase; }
.patterns-problem { background: var(--patterns-paper); }
.patterns-problem-inner { display: grid; grid-template-columns: minmax(0, .78fr) minmax(420px, 1.22fr); gap: 2rem clamp(3rem, 7vw, 7rem); align-items: start; }
.patterns-problem-inner .patterns-chapter-head { display: block; grid-column: 1; margin: 0; }
.patterns-problem-inner .patterns-chapter-intro { margin-top: 1.8rem; }
.patterns-before { grid-column: 2; grid-row: 1 / span 2; margin: 0; }
.patterns-before img { width: 100%; height: auto; border: 1px solid var(--patterns-line); background: #111; }
.patterns-research-grid { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 2.5rem; border: 1px solid var(--patterns-line); background: var(--patterns-line); }
.patterns-research-card { padding: clamp(1.5rem, 3vw, 3rem); background: var(--patterns-bg); }
.patterns-research-card h3 { margin: .55rem 0 1rem; font-size: clamp(2rem, 3.3vw, 3.2rem); line-height: 1.05; }
.patterns-research-card p:last-child { color: var(--patterns-muted); }
.patterns-solution .patterns-prose { max-width: 780px; font: 400 clamp(1.15rem, 1.8vw, 1.45rem)/1.6 Georgia, "Times New Roman", serif; }
.patterns-process { margin: 5rem 0 2.5rem; padding: 3rem 0; border-top: 1px solid var(--patterns-ink); border-bottom: 1px solid var(--patterns-line); }
.patterns-process-heading { display: grid; grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr); gap: 2rem clamp(3rem, 7vw, 7rem); align-items: end; }
.patterns-process-heading h3 { max-width: 12ch; margin: .35rem 0 0; font-size: clamp(2.2rem, 4vw, 3.6rem); line-height: 1.02; }
.patterns-process-heading > p:last-child { max-width: 42rem; margin: 0; color: var(--patterns-muted); }
.patterns-process-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3.25rem 2rem; margin-top: 3rem; }
.patterns-process-item { min-width: 0; margin: 0; }
.patterns-process-frame { display: grid; place-items: center; width: 100%; height: clamp(440px, 40vw, 520px); overflow: hidden; border: 1px solid var(--patterns-line); background: #111; }
.patterns-process-item:nth-child(2) .patterns-process-frame { background: #f1f1ef; }
.patterns-process-frame img { width: 100%; height: 100%; object-fit: contain; }

.patterns-humanize { margin: 5rem 0 1rem; padding: clamp(2.5rem, 5vw, 4.5rem); border-top: 1px solid var(--patterns-ink); border-bottom: 1px solid var(--patterns-line); background: var(--patterns-warm); }
.patterns-humanize-intro { display: grid; grid-template-columns: minmax(280px, .78fr) minmax(0, 1.22fr); gap: 2rem clamp(3rem, 7vw, 7rem); align-items: end; }
.patterns-humanize-intro h3 { max-width: 11ch; margin: .35rem 0 0; font-size: clamp(2.5rem, 4.8vw, 4.7rem); line-height: .98; }
.patterns-humanize-intro > p { max-width: 46rem; margin: 0; font: 400 clamp(1.08rem, 1.7vw, 1.35rem)/1.62 Georgia, "Times New Roman", serif; }
.patterns-hero-studies { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem; margin-top: 3rem; }
.patterns-hero-study { min-width: 0; margin: 0; }
.patterns-hero-study img { width: 100%; height: auto; border: 1px solid color-mix(in srgb, var(--patterns-ink) 24%, transparent); background: #111; }
.patterns-principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 3rem; border-top: 1px solid var(--patterns-ink); border-bottom: 1px solid var(--patterns-line); }
.patterns-principles article { padding: 1.4rem 1.4rem 1.5rem 0; }
.patterns-principles article + article { padding-left: 1.4rem; border-left: 1px solid var(--patterns-line); }
.patterns-principles strong { display: block; margin-bottom: .6rem; font: 400 1.35rem/1.12 Georgia, "Times New Roman", serif; }
.patterns-principles p { margin: 0; color: var(--patterns-muted); font-size: .92rem; }
.patterns-atlas { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(300px, .72fr); gap: clamp(1rem, 2vw, 1.6rem); margin-top: clamp(3rem, 6vw, 5rem); align-items: start; }
.patterns-atlas-item { min-width: 0; margin: 0; }
.patterns-atlas-item img { width: 100%; height: auto; border: 1px solid var(--patterns-line); background: #fff; }
.patterns-atlas-sales { grid-column: 1; grid-row: 1; }
.patterns-atlas-breadth { grid-column: 2; grid-row: 1 / span 2; }
.patterns-atlas-fallback { grid-column: 1; grid-row: 2; align-self: end; }

.patterns-playback { background: #111820; color: #f5f5f0; }
.patterns-playback .patterns-chapter-meta { color: #78a9ff; }
.patterns-playback .patterns-chapter-intro { color: #d0d7e4; }
.patterns-playback-inner { display: grid; grid-template-columns: minmax(0, .82fr) minmax(420px, 1.18fr); gap: 2rem clamp(3rem, 7vw, 7rem); align-items: start; }
.patterns-playback-inner .patterns-chapter-head { display: block; grid-column: 1; margin: 0; }
.patterns-playback-inner .patterns-chapter-intro { margin-top: 1.8rem; }
.patterns-playback-single { grid-column: 2; grid-row: 1; margin: 0; padding: .65rem; background: #f6f6f2; color: #121316; }
.patterns-playback-single img { width: 100%; height: auto; }
.patterns-playback-single .patterns-evidence-caption { color: #4b5563; }
.patterns-playback .patterns-evidence-caption b { color: #121316; }
.patterns-feedback { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin-top: 1rem; }
.patterns-feedback blockquote { margin: 0; padding: 1.4rem 1.6rem; border-left: 4px solid #78a9ff; background: #1d2733; font: 400 clamp(1.2rem, 2vw, 1.55rem)/1.45 Georgia, "Times New Roman", serif; }
.patterns-playback .patterns-source-note { border-color: #4b5565; color: #b8c0cc; }
.patterns-playback .patterns-note-label { color: #f5f5f0; }

.patterns-influence { background: var(--patterns-paper); }
.patterns-influence-inner { display: grid; grid-template-columns: minmax(260px, .62fr) minmax(0, 1.38fr); gap: 2rem clamp(3rem, 7vw, 7rem); align-items: start; }
.patterns-influence-inner .patterns-chapter-head { grid-column: 1; grid-row: 1 / span 4; display: block; position: sticky; top: 6rem; margin: 0; }
.patterns-influence-inner .patterns-chapter-intro { margin-top: 1.8rem; }
.patterns-reception { grid-column: 2; margin: 0; font: 400 clamp(1.35rem, 2.5vw, 2.1rem)/1.4 Georgia, "Times New Roman", serif; }
.patterns-reflection { grid-column: 2; max-width: 42rem; margin: 1.5rem 0 0; color: var(--patterns-muted); font: 400 clamp(1.08rem, 1.7vw, 1.3rem)/1.58 Georgia, "Times New Roman", serif; }
.patterns-influence-inner > .patterns-source-note { grid-column: 2; }

@media (max-width: 900px) {
  .patterns-hero { grid-template-columns: 1fr; grid-template-areas: "copy" "visual"; }
  .patterns-hero-frame { height: clamp(340px, 56vw, 480px); }
  .patterns-hero-image { left: -15%; width: 130%; --patterns-pan: -27%; }
  .patterns-origin-inner,
  .patterns-problem-inner,
  .patterns-playback-inner,
  .patterns-influence-inner { grid-template-columns: 1fr; }
  .patterns-origin-inner .patterns-chapter-head,
  .patterns-origin-inner .patterns-prose,
  .patterns-problem-inner .patterns-chapter-head,
  .patterns-problem-inner .patterns-prose,
  .patterns-before,
  .patterns-research-grid,
  .patterns-playback-inner .patterns-chapter-head,
  .patterns-playback-single,
  .patterns-feedback,
  .patterns-influence-inner .patterns-chapter-head,
  .patterns-reception,
  .patterns-reflection,
  .patterns-influence-inner > .patterns-source-note { grid-column: 1; grid-row: auto; }
  .patterns-influence-inner .patterns-chapter-head { position: static; }
  .patterns-atlas { grid-template-columns: minmax(0, 1.18fr) minmax(260px, .82fr); }
}

@media (max-width: 760px) {
  .patterns-hero-field { padding-top: 4rem; }
  .patterns-shell { width: min(calc(100% - 28px), 1220px); }
  .patterns-hero { gap: 1.5rem; padding: 3.8rem 0 4rem; }
  .patterns-page h1 { font-size: clamp(3.2rem, 15vw, 4.2rem); }
  .patterns-thesis { font-size: 1.25rem; }

  .patterns-hero-frame { height: 230px; }
  .patterns-hero-image { left: -30%; width: 160%; --patterns-pan: -23%; }
  .patterns-chapter { padding: 4.8rem 0; }
  .patterns-chapter-head { grid-template-columns: 1fr; gap: 1.4rem; }
  .patterns-chapter h2 { max-width: 15ch; font-size: clamp(2.9rem, 13vw, 4.2rem); }
  .patterns-research-grid,
  .patterns-process-heading,
  .patterns-process-grid,
  .patterns-humanize-intro,
  .patterns-hero-studies,
  .patterns-principles,
  .patterns-feedback { grid-template-columns: 1fr; }
  .patterns-principles article + article { border-left: 0; border-top: 1px solid var(--patterns-line); }
  .patterns-process { margin-top: 3.5rem; padding: 2rem 0; }
  .patterns-process-grid { gap: 2.5rem; margin-top: 2rem; }
  .patterns-process-frame { height: auto; aspect-ratio: 4 / 5; }
  .patterns-process-item:first-child .patterns-process-frame { aspect-ratio: 1; }
  .patterns-humanize { margin-top: 3.5rem; padding: 2rem 1.25rem; }
  .patterns-humanize-intro h3 { font-size: 2.5rem; }
  .patterns-atlas { grid-template-columns: 1fr; gap: 2rem; }
  .patterns-atlas-sales,
  .patterns-atlas-breadth,
  .patterns-atlas-fallback { grid-column: 1; grid-row: auto; }
  .patterns-atlas-breadth { width: 88%; justify-self: end; }
}

@media (prefers-reduced-motion: reduce) {
  .patterns-page *,
  .patterns-page *::before,
  .patterns-page *::after { scroll-behavior: auto !important; transition: none !important; }
  .patterns-hero-image { animation: none !important; transform: none !important; }
  .patterns-motion-toggle { display: none; }
}