/* ==============================================================
   The Loop & The Line — Punch Needle Rug Making Course
   Warm editorial craft palette: cream, terracotta, wool navy, moss
   ============================================================== */

:root,
[data-theme='light'] {
  /* Fluid type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 8rem);

  /* Spacing 4px system */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Warm cream + wool palette */
  --color-bg: #f4efe6;              /* raw wool cream */
  --color-surface: #f8f4ec;         /* lighter cream */
  --color-surface-2: #fbf9f3;
  --color-surface-offset: #ece5d6;  /* linen */
  --color-surface-offset-2: #e2dac6;
  --color-surface-dynamic: #d6cdb6;
  --color-divider: #ddd3bd;
  --color-border: #c9beaa;

  --color-text: #24211c;            /* deep walnut */
  --color-text-muted: #6d6555;
  --color-text-faint: #a89f8b;
  --color-text-inverse: #f8f4ec;

  /* Accent: deep wool navy */
  --color-primary: #253a52;
  --color-primary-hover: #1a2b3f;
  --color-primary-active: #101d2d;
  --color-primary-highlight: #d3d9e0;

  /* Terracotta accent (secondary) */
  --color-accent: #b95f37;
  --color-accent-hover: #984a26;
  --color-accent-highlight: #ecd7c8;

  /* Support colors */
  --color-warning: #a86828;
  --color-warning-highlight: #ecdcc4;
  --color-error: #8a3540;
  --color-error-highlight: #e5cccf;
  --color-success: #5b7638;
  --color-success-highlight: #d9dfc7;
  --color-moss: #647a4a;
  --color-mustard: #c39432;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --transition-interactive: 220ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 60 / 0.06);
  --shadow-md: 0 4px 16px oklch(0.2 0.02 60 / 0.08);
  --shadow-lg: 0 20px 40px oklch(0.15 0.02 60 / 0.14);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  --font-display: 'Boska', 'Iowan Old Style', Georgia, serif;
  --font-body: 'Work Sans', 'Helvetica Neue', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #1a1815;
  --color-surface: #1f1c18;
  --color-surface-2: #24211c;
  --color-surface-offset: #28241f;
  --color-surface-offset-2: #2e2924;
  --color-surface-dynamic: #38322a;
  --color-divider: #322d26;
  --color-border: #48413a;
  --color-text: #ede6d6;
  --color-text-muted: #a89f8b;
  --color-text-faint: #6d6555;
  --color-text-inverse: #24211c;
  --color-primary: #a7bfd6;
  --color-primary-hover: #c4d3e1;
  --color-primary-active: #d5deea;
  --color-primary-highlight: #2e3947;
  --color-accent: #d78967;
  --color-accent-hover: #e69f7f;
  --color-accent-highlight: #4a3629;
  --color-warning: #cf9856;
  --color-warning-highlight: #4d3d24;
  --color-error: #cc6d7a;
  --color-error-highlight: #4e2c34;
  --color-success: #97b56d;
  --color-success-highlight: #384029;
  --color-moss: #94a978;
  --color-mustard: #dbb15c;
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 20px 40px oklch(0 0 0 / 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #1a1815;
    --color-surface: #1f1c18;
    --color-surface-2: #24211c;
    --color-surface-offset: #28241f;
    --color-surface-offset-2: #2e2924;
    --color-divider: #322d26;
    --color-border: #48413a;
    --color-text: #ede6d6;
    --color-text-muted: #a89f8b;
    --color-text-faint: #6d6555;
    --color-primary: #a7bfd6;
    --color-accent: #d78967;
    --color-moss: #94a978;
    --color-mustard: #dbb15c;
  }
}

/* --- base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
  hanging-punctuation: first last;
}
body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background:
    radial-gradient(ellipse 120% 80% at 10% -10%, color-mix(in oklab, var(--color-accent) 10%, transparent), transparent 55%),
    radial-gradient(ellipse 90% 60% at 100% 0%, color-mix(in oklab, var(--color-primary) 8%, transparent), transparent 50%),
    linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 28%, var(--color-bg) 100%);
  background-attachment: fixed;
}
img, picture, video, svg { display: block; max-width: 100%; height: auto; }
picture { width: 100%; }
picture > img { width: 100%; height: auto; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; }
p, li, figcaption { text-wrap: pretty; }
p, li { max-width: 68ch; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }
::selection { background: color-mix(in oklab, var(--color-accent) 30%, transparent); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }

a, button, [role='button'] {
  transition: color var(--transition-interactive), background var(--transition-interactive),
              border-color var(--transition-interactive), transform var(--transition-interactive);
}

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

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  transform: translateY(-200%);
}
.skip-link:focus {
  transform: translateY(0);
  color: var(--color-text-inverse);
}

/* --- Layout containers --- */
.container { width: 100%; max-width: var(--content-wide); margin-inline: auto; padding-inline: var(--space-6); }
.container--narrow { max-width: var(--content-narrow); }
.container--default { max-width: var(--content-default); }
section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); }

/* --- Header --- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px) saturate(1.1);
  background: color-mix(in oklab, var(--color-bg) 82%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--color-border) 60%, transparent);
}
.site-header__inner {
  max-width: var(--content-wide); margin-inline: auto;
  padding: var(--space-4) var(--space-6);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-6);
}
.site-header__brand { display: inline-flex; align-items: center; gap: var(--space-3); color: var(--color-text); }
.site-header__brand:hover { color: var(--color-text); }
.brand-mark { width: 32px; height: 32px; }
.brand-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1;
}
.brand-title em { font-style: italic; color: var(--color-accent); font-weight: 400; }

.nav {
  display: flex; align-items: center; gap: var(--space-6);
  font-size: var(--text-sm);
}
.nav a {
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-1);
  position: relative;
}
.nav a:hover, .nav a[aria-current='page'] { color: var(--color-text); }
.nav a[aria-current='page']::after {
  content: ''; position: absolute; left: var(--space-1); right: var(--space-1); bottom: 2px;
  height: 1px; background: var(--color-accent);
}
.nav__actions { display: flex; align-items: center; gap: var(--space-3); }
.theme-toggle {
  width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full); color: var(--color-text-muted);
}
.theme-toggle:hover { background: var(--color-surface-offset); color: var(--color-text); }

.menu-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; }
@media (max-width: 820px) {
  .nav__links { display: none; }
  .menu-toggle { display: inline-flex; }
  .nav__links.is-open {
    display: flex; flex-direction: column; align-items: flex-start; gap: 0;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-surface); padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-border);
    max-height: min(70vh, 28rem);
    overflow-y: auto;
  }
  .nav__links.is-open a { padding: var(--space-3) 0; width: 100%; border-bottom: 1px solid var(--color-divider); }
  body.nav-open { overflow: hidden; }
}

/* --- Hero --- */
.hero {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24)) clamp(var(--space-12), 6vw, var(--space-20));
}
.hero__inner {
  max-width: var(--content-wide); margin-inline: auto;
  padding-inline: var(--space-6);
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: var(--space-16); align-items: center;
}
@media (max-width: 900px) { .hero__inner { grid-template-columns: 1fr; gap: var(--space-10); } }

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-3);
  font-size: var(--text-xs); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--color-text-muted); margin-bottom: var(--space-6);
}
.hero__eyebrow::before { content: ''; width: 24px; height: 1px; background: var(--color-accent); }

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 0.98;
  color: var(--color-text);
  margin-bottom: var(--space-8);
}
.hero__title em { font-style: italic; color: var(--color-accent); }

.hero__lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 42ch;
  line-height: 1.55;
  margin-bottom: var(--space-10);
}

.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }

.hero__image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 3 / 4;
  background: var(--color-surface-offset);
}
.hero__image picture,
.hero__image img { width: 100%; height: 100%; }
.hero__image img { object-fit: cover; }
.hero__image::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, oklch(0.15 0.03 40 / 0.15));
  pointer-events: none;
}
@media (min-width: 1100px) {
  .hero {
    padding-block: 0;
    min-height: min(92vh, 920px);
    display: flex;
    align-items: stretch;
  }
  .hero__inner {
    width: 100%;
    max-width: none;
    padding-inline: 0;
    gap: 0;
    grid-template-columns: minmax(28rem, 0.95fr) 1.05fr;
    min-height: inherit;
  }
  .hero__text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(var(--space-16), 8vw, var(--space-24)) clamp(var(--space-8), 6vw, var(--space-20));
    max-width: 40rem;
    margin-inline-start: max(0px, calc((100vw - var(--content-wide)) / 2));
  }
  .hero__image {
    border-radius: 0;
    box-shadow: none;
    aspect-ratio: auto;
    min-height: 100%;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm); font-weight: 500;
  border-radius: var(--radius-full);
  transition: all var(--transition-interactive);
  border: 1px solid transparent;
}
.btn--primary { background: var(--color-primary); color: var(--color-text-inverse); }
.btn--primary:hover { background: var(--color-primary-hover); color: var(--color-text-inverse); transform: translateY(-1px); }
.btn--ghost { color: var(--color-text); border-color: var(--color-border); }
.btn--ghost:hover { border-color: var(--color-text); color: var(--color-text); background: var(--color-surface); }
.btn--accent { background: var(--color-accent); color: white; }
.btn--accent:hover { background: var(--color-accent-hover); color: white; }

/* --- Section headers --- */
.section-header { margin-bottom: var(--space-12); max-width: 60ch; }
.section-header__eyebrow {
  font-size: var(--text-xs); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--color-accent); font-weight: 500;
  margin-bottom: var(--space-4);
}
.section-header__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}
.section-header__title em { font-style: italic; color: var(--color-accent); }
.section-header__lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* --- Curriculum module cards --- */
.modules {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-8);
}
.module-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex; flex-direction: column; gap: var(--space-4);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
  color: inherit;
  text-decoration: none;
}
a.module-card:hover {
  color: inherit;
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}
.module-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}
.module-card__no {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}
.module-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
}
.module-card__desc {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.6;
}
.module-card__meta {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase; letter-spacing: 0.12em;
}
.module-card__link {
  color: var(--color-text);
  font-weight: 500;
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm);
  text-transform: none; letter-spacing: 0;
}
.module-card__link:hover { color: var(--color-accent); }
.module-card__link::after { content: '→'; transition: transform var(--transition-interactive); }
.module-card__link:hover::after { transform: translateX(4px); }

/* --- Long-form lesson pages --- */
.lesson-hero {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20)) var(--space-10);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.lesson-hero__crumbs {
  font-size: var(--text-xs); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.lesson-hero__crumbs a { color: var(--color-text-muted); }
.lesson-hero__crumbs a:hover { color: var(--color-accent); }
.lesson-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  max-width: 22ch;
}
.lesson-hero__title em { font-style: italic; color: var(--color-accent); }
.lesson-hero__lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: 1.55;
}
.lesson-hero__meta {
  display: flex; flex-wrap: wrap; gap: var(--space-6);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
}
.lesson-hero__meta strong { display: block; color: var(--color-text); font-weight: 500; letter-spacing: 0; text-transform: none; font-size: var(--text-sm); margin-top: 2px; }

/* --- Prose content --- */
.prose {
  max-width: 68ch;
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.prose h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-top: var(--space-16);
  margin-bottom: var(--space-4);
}
.prose h2 em { font-style: italic; color: var(--color-accent); }
.prose h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-10);
  margin-bottom: var(--space-3);
  letter-spacing: -0.005em;
}
.prose p { margin-bottom: var(--space-4); font-size: var(--text-base); }
.prose ul, .prose ol { margin: var(--space-4) 0 var(--space-6) var(--space-6); }
.prose li { margin-bottom: var(--space-2); }
.prose li::marker { color: var(--color-accent); }
.prose strong { font-weight: 600; color: var(--color-text); }
.prose em { font-style: italic; }
.prose a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; text-decoration-color: color-mix(in oklab, var(--color-primary) 40%, transparent); }
.prose a:hover { text-decoration-color: var(--color-primary); }
.prose blockquote {
  margin: var(--space-8) 0;
  padding: var(--space-2) var(--space-6);
  border-left: 3px solid var(--color-accent);
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-text);
  line-height: 1.4;
}
.prose figure { margin: var(--space-10) 0; }
.prose figure img,
.prose figure picture { border-radius: var(--radius-lg); }
.prose figcaption {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--space-3);
  font-style: italic;
}

/* Full-bleed image break inside prose */
.prose .full-bleed {
  max-width: none;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  margin-top: var(--space-16);
  margin-bottom: var(--space-16);
}
.prose .full-bleed img { border-radius: 0; width: 100%; max-height: 70vh; object-fit: cover; }
.prose .full-bleed picture { width: 100%; }
.prose .full-bleed picture img { border-radius: 0; }

/* Four-stage figure with numbered labels overlaid beneath the image */
.stages-figure__image {
  position: relative;
  width: 100%;
}
.stages-figure__labels {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
  padding: var(--space-4) var(--space-4) var(--space-2);
  max-width: var(--content-wide);
  margin-inline: auto;
}
.stage-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  text-align: center;
  padding: var(--space-3) var(--space-2);
}
.stage-label__no {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-accent);
  line-height: 1;
}
.stage-label__text {
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text);
  line-height: 1.3;
}
.prose .stages-figure figcaption {
  max-width: 68ch;
  margin-inline: auto;
  padding-inline: var(--space-6);
  text-align: left;
  font-style: normal;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: var(--space-4);
}
.prose .stages-figure figcaption strong { color: var(--color-text); font-weight: 600; }
.prose .stages-figure figcaption em { color: var(--color-text); font-style: normal; font-weight: 500; }

@media (max-width: 700px) {
  .stages-figure__labels { gap: var(--space-1); padding: var(--space-3) var(--space-2); }
  .stage-label { padding: var(--space-2) 0; }
  .stage-label__text { font-size: 10px; letter-spacing: 0.08em; }
}

/* Callout / note blocks */
.callout {
  margin: var(--space-8) 0;
  padding: var(--space-6) var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
}
.callout--tip { border-left-color: var(--color-success); }
.callout--warning { border-left-color: var(--color-warning); background: var(--color-warning-highlight); }
[data-theme='dark'] .callout--warning { background: var(--color-surface); }
.callout__label {
  font-size: var(--text-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.callout--tip .callout__label { color: var(--color-success); }
.callout--warning .callout__label { color: var(--color-warning); }
.callout p:last-child { margin-bottom: 0; }

/* Step lists */
.steps {
  counter-reset: step;
  list-style: none !important;
  margin-left: 0 !important;
  padding-left: 0;
  display: flex; flex-direction: column; gap: var(--space-6);
}
.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: var(--space-16);
  min-height: 3.5rem;
  max-width: none;
}
.steps > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-accent);
  line-height: 1;
  width: 3rem;
  padding-top: 2px;
}
.steps > li .steps__title {
  display: block;
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-1);
  color: var(--color-text);
}

.u-mt-6 { margin-top: var(--space-6); }
.u-text-center { text-align: center; }
.u-mx-auto { margin-inline: auto; }

/* Comparison tables */
.table-wrap { overflow-x: auto; margin: var(--space-8) 0; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.data-table th, .data-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-divider);
  vertical-align: top;
}
.data-table th {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1;
}
.data-table tr:hover td { background: var(--color-surface); }

/* Project card row */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-12);
}
.project-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-divider);
  display: flex; flex-direction: column;
  color: var(--color-text);
  text-decoration: none;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
  color: var(--color-text);
}
.project-card__img {
  aspect-ratio: 4/3;
  background: var(--color-surface-offset);
  overflow: hidden;
}
.project-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 600ms cubic-bezier(0.16,1,0.3,1); }
.project-card__img picture { width: 100%; height: 100%; }
.project-card__img picture img { width: 100%; height: 100%; }
.project-card:hover .project-card__img img { transform: scale(1.03); }
.project-card__body { padding: var(--space-6); flex: 1; display: flex; flex-direction: column; gap: var(--space-2); }
.project-card__no {
  font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--color-accent); font-weight: 500;
}
.project-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  display: block;
}
.project-card__desc {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.55;
}
.project-card__link {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  display: inline-flex; align-items: center; gap: var(--space-2);
}
.project-card__link::after {
  content: '→';
  transition: transform var(--transition-interactive);
}
.project-card:hover .project-card__link::after { transform: translateX(4px); }

/* Two-column editorial split */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
@media (max-width: 820px) { .split { grid-template-columns: 1fr; gap: var(--space-10); } }
.split--reverse .split__text { order: 2; }
@media (max-width: 820px) { .split--reverse .split__text { order: 0; } }
.split__image { border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4/5; background: var(--color-surface-offset); }
.split__image picture,
.split__image img { width: 100%; height: 100%; }
.split__image img { object-fit: cover; }
.split__eyebrow {
  font-size: var(--text-xs); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--color-accent); font-weight: 500;
  margin-bottom: var(--space-3);
}
.split__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-4);
}
.split__title em { font-style: italic; color: var(--color-accent); }
.split__text p { color: var(--color-text-muted); font-size: var(--text-base); line-height: 1.65; margin-bottom: var(--space-3); max-width: 52ch; }

/* Alternating band bg */
.band { background: var(--color-surface); border-block: 1px solid var(--color-divider); }
.band--offset { background: var(--color-surface-offset); }

/* Big quote pull */
.pull-quote {
  max-width: var(--content-default); margin-inline: auto;
  padding: var(--space-16) var(--space-6);
  text-align: center;
}
.pull-quote blockquote {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  font-style: italic;
  line-height: 1.15;
  color: var(--color-text);
  letter-spacing: -0.015em;
}
.pull-quote blockquote em { color: var(--color-accent); }
.pull-quote cite {
  display: block; margin-top: var(--space-6);
  font-family: var(--font-body); font-style: normal;
  font-size: var(--text-xs); letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Next-prev nav on lesson pages */
.lesson-nav {
  max-width: var(--content-default); margin: var(--space-16) auto 0;
  padding: var(--space-8) var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6);
}
@media (max-width: 640px) {
  .lesson-nav { grid-template-columns: 1fr; }
  .lesson-nav a:nth-child(2) { text-align: left; }
}
.lesson-nav a {
  color: var(--color-text);
  display: flex; flex-direction: column; gap: var(--space-1);
  padding: var(--space-4); border-radius: var(--radius-md);
  border: 1px solid var(--color-divider);
  transition: all var(--transition-interactive);
}
.lesson-nav a:hover { border-color: var(--color-border); background: var(--color-surface); }
.lesson-nav a:nth-child(2) { text-align: right; }
.lesson-nav__label { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--color-text-muted); }
.lesson-nav__title { font-family: var(--font-display); font-size: var(--text-lg); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-16) 0 var(--space-10);
  background: var(--color-surface);
}
.site-footer__inner {
  max-width: var(--content-wide); margin-inline: auto;
  padding-inline: var(--space-6);
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--space-10);
}
@media (max-width: 820px) { .site-footer__inner { grid-template-columns: 1fr; } }
.footer-brand {
  font-family: var(--font-display); font-size: var(--text-xl); font-weight: 400;
  margin-bottom: var(--space-3);
}
.footer-brand em { font-style: italic; color: var(--color-accent); }
.site-footer p { color: var(--color-text-muted); font-size: var(--text-sm); max-width: 40ch; }
.footer-col__title { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--color-text-muted); margin-bottom: var(--space-4); font-weight: 500; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: var(--space-2); font-size: var(--text-sm); }
.footer-col a { color: var(--color-text); }
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
  max-width: var(--content-wide); margin: var(--space-12) auto 0;
  padding: var(--space-6) var(--space-6) 0;
  border-top: 1px solid var(--color-divider);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-4);
  font-size: var(--text-xs); color: var(--color-text-muted);
}

/* Reveal on scroll — only hide when JS is available so content stays readable without it */
.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 800ms cubic-bezier(0.16,1,0.3,1), transform 800ms cubic-bezier(0.16,1,0.3,1);
}
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .js .reveal,
  .js .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Woven texture decoration */
.woven-divider {
  height: 24px;
  width: 100%;
  background-image:
    radial-gradient(circle at 12px 12px, color-mix(in oklab, var(--color-accent) 30%, transparent) 3px, transparent 3.5px);
  background-size: 24px 24px;
  background-position: 0 0;
  opacity: 0.4;
  max-width: 120px;
  margin: var(--space-8) auto;
}

/* Staggered hero reveals */
.js .reveal[data-delay='1'] { transition-delay: 40ms; }
.js .reveal[data-delay='2'] { transition-delay: 120ms; }
.js .reveal[data-delay='3'] { transition-delay: 200ms; }
.js .reveal[data-delay='4'] { transition-delay: 280ms; }
.js .reveal[data-delay='5'] { transition-delay: 360ms; }

/* Reference filter toolbar */
.ref-toolbar {
  margin: 0 0 var(--space-10);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}
.ref-toolbar input[type='search'] {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font: inherit;
}
.ref-toolbar input[type='search']:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.ref-toolbar__hint {
  margin: var(--space-3) 0 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.symptom { margin-top: var(--space-10); }
.symptom > h3 { margin-top: 0; }

/* On-this-page TOC */
.toc {
  margin: 0 0 var(--space-12);
  padding: var(--space-5) var(--space-6);
  border-left: 3px solid var(--color-accent);
  background: color-mix(in oklab, var(--color-accent-highlight) 55%, var(--color-surface));
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.toc__title {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  font-weight: 500;
}
.toc__list {
  list-style: none;
  margin: 0 !important;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.toc__list a {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
}
.toc__list a:hover { color: var(--color-accent); }

/* Reading progress + back to top */
.read-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 60;
  transform-origin: left center;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  pointer-events: none;
}
@supports (animation-timeline: scroll()) {
  .read-progress {
    animation: read-progress linear;
    animation-timeline: scroll(root);
  }
  @keyframes read-progress {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
  }
}
.to-top {
  position: fixed;
  right: var(--space-6);
  bottom: var(--space-6);
  z-index: 40;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--transition-interactive), transform var(--transition-interactive);
}
.to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.to-top:hover { background: var(--color-primary-hover); color: var(--color-text-inverse); }

@media print {
  .site-header,
  .skip-link,
  .theme-toggle,
  .menu-toggle,
  .read-progress,
  .to-top,
  .lesson-nav,
  .site-footer,
  .ref-toolbar,
  .toc { display: none !important; }
  body {
    background: white;
    color: black;
    font-size: 11pt;
  }
  a { color: inherit; text-decoration: underline; }
  .prose { max-width: none; }
  .hero__image, .split__image, .project-card__img { break-inside: avoid; }
}