/* LASAGNA project page. One accent (#1B5EA8), light and dark themes, no build step. */

/* Fonts: self-hosted latin subsets from Google Fonts (Inter, Newsreader, JetBrains Mono; SIL Open Font License). */
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("fonts/inter-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Newsreader"; font-style: normal; font-weight: 400 600; font-display: swap; src: url("fonts/newsreader-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Newsreader"; font-style: italic; font-weight: 400 500; font-display: swap; src: url("fonts/newsreader-italic-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 400 500; font-display: swap; src: url("fonts/jetbrains-mono-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

/* ---------- tokens ---------- */
:root {
  color-scheme: light;
  --bg: #FBFAF7;
  --bg-elev: #FFFFFF;
  --band: #F3F2EE;
  --ink: #14171C;
  --ink-2: #3A404A;
  --muted: #5E6570;
  --line: #E3E1DA;
  --line-strong: #CFCCC2;
  --accent: #1B5EA8;
  --accent-strong: #154A85;
  --accent-soft: #E6EDF6;
  --on-accent: #FFFFFF;
  --bar-pred: #B7B4AB;
  --code-bg: #14171C;
  --code-ink: #E7E9EC;
  --code-muted: #9AA1AB;
  --code-key: #9CC3F5;
  --code-str: #E9C08A;
  --plate: #FFFFFF;
  --nav-bg: rgb(251 250 247 / 0.82);
  --shadow-sm: 0 1px 2px rgb(20 23 28 / 0.05);
  --shadow-md: 0 1px 2px rgb(20 23 28 / 0.05), 0 8px 24px -12px rgb(20 23 28 / 0.18);
  --shadow-lg: 0 2px 4px rgb(20 23 28 / 0.06), 0 30px 70px -30px rgb(20 23 28 / 0.42);
  --glow: rgb(27 94 168 / 0.10);

  --serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --wrap: 1160px;
  --narrow: 860px;
  --gutter: 16px;
  --nav-h: 60px;
  --radius: 16px;
  --radius-sm: 10px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0D0F12;
    --bg-elev: #15181D;
    --band: #111418;
    --ink: #ECEEF1;
    --ink-2: #BDC3CC;
    --muted: #8F97A3;
    --line: #242930;
    --line-strong: #343A44;
    --accent: #7EB1F2;
    --accent-strong: #A9CBF8;
    --accent-soft: #14243A;
    --on-accent: #0D0F12;
    --bar-pred: #4B515B;
    --code-bg: #090B0E;
    --plate: #FFFFFF;
    --nav-bg: rgb(13 15 18 / 0.78);
    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.4);
    --shadow-md: 0 1px 2px rgb(0 0 0 / 0.4), 0 10px 30px -14px rgb(0 0 0 / 0.7);
    --shadow-lg: 0 2px 6px rgb(0 0 0 / 0.5), 0 36px 80px -30px rgb(0 0 0 / 0.85);
    --glow: rgb(126 177 242 / 0.08);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0D0F12;
  --bg-elev: #15181D;
  --band: #111418;
  --ink: #ECEEF1;
  --ink-2: #BDC3CC;
  --muted: #8F97A3;
  --line: #242930;
  --line-strong: #343A44;
  --accent: #7EB1F2;
  --accent-strong: #A9CBF8;
  --accent-soft: #14243A;
  --on-accent: #0D0F12;
  --bar-pred: #4B515B;
  --code-bg: #090B0E;
  --plate: #FFFFFF;
  --nav-bg: rgb(13 15 18 / 0.78);
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.4);
  --shadow-md: 0 1px 2px rgb(0 0 0 / 0.4), 0 10px 30px -14px rgb(0 0 0 / 0.7);
  --shadow-lg: 0 2px 6px rgb(0 0 0 / 0.5), 0 36px 80px -30px rgb(0 0 0 / 0.85);
  --glow: rgb(126 177 242 / 0.08);
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--nav-h) + 16px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.0625rem/1.65 var(--sans);
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, video, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { margin: 0; color: var(--ink); text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; list-style: none; }
sup { font-size: 0.66em; line-height: 0; vertical-align: super; }
::selection { background: var(--accent); color: var(--on-accent); }

.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: 12px; top: -48px; z-index: 100;
  padding: 10px 14px; border-radius: 8px; background: var(--ink); color: var(--bg);
  font-weight: 600; text-decoration: none;
}
.skip:focus { top: 12px; color: var(--bg); }

.wrap { width: 100%; max-width: calc(var(--wrap) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.wrap.narrow { max-width: calc(var(--narrow) + 2 * var(--gutter)); }
@media (min-width: 720px) { :root { --gutter: 32px; } }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  background: var(--nav-bg);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav-inner {
  height: 100%; max-width: calc(var(--wrap) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter);
  display: flex; align-items: center; gap: 12px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--accent); text-decoration: none; flex: none; }
.brand-mark { flex: none; display: block; }
.brand-mark .bm-l0 { fill: #5F8446; } .brand-mark .bm-l1 { fill: #EBD49A; } .brand-mark .bm-l2 { fill: #A23F2B; }
.brand-mark .bm-l7 { fill: #D9923A; } .brand-mark .bm-p { fill: #DDAE4A; } .brand-mark .bm-s { stroke: var(--accent); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .brand-mark .bm-l0 { fill: #7FA463; }
  :root:not([data-theme="light"]) .brand-mark .bm-l2 { fill: #C4563B; }
  :root:not([data-theme="light"]) .brand-mark .bm-l7 { fill: #E0A04A; }
  :root:not([data-theme="light"]) .brand-mark .bm-p { fill: #E3B95A; }
}
:root[data-theme="dark"] .brand-mark .bm-l0 { fill: #7FA463; }
:root[data-theme="dark"] .brand-mark .bm-l2 { fill: #C4563B; }
:root[data-theme="dark"] .brand-mark .bm-l7 { fill: #E0A04A; }
:root[data-theme="dark"] .brand-mark .bm-p { fill: #E3B95A; }
.brand-name { color: var(--ink); font: 700 0.95rem/1 var(--sans); letter-spacing: 0.08em; }
.nav-links {
  flex: 1 1 auto; min-width: 0;
  display: flex; justify-content: flex-end; gap: 2px;
  overflow-x: auto; scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  flex: none; padding: 8px 11px; border-radius: 999px;
  color: var(--ink-2); font: 500 0.875rem/1 var(--sans); text-decoration: none; white-space: nowrap;
}
.nav-links a:hover { color: var(--ink); background: var(--accent-soft); }
.nav-links a[aria-current="true"] { color: var(--accent); background: var(--accent-soft); }
.theme-toggle {
  flex: none; display: inline-grid; place-items: center;
  width: 40px; height: 40px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg-elev); color: var(--ink-2); cursor: pointer;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--line-strong); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle[aria-pressed="true"] .icon-sun { display: block; }
.theme-toggle[aria-pressed="true"] .icon-moon { display: none; }
@media (max-width: 719px) {
  .brand-name { display: none; }
  .nav-links {
    justify-content: flex-start;
    -webkit-mask-image: linear-gradient(90deg, #000 86%, transparent);
    mask-image: linear-gradient(90deg, #000 86%, transparent);
    padding-right: 20px;
  }
  .nav-links a { padding: 8px 9px; font-size: 0.84rem; }
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  margin-top: calc(-1 * var(--nav-h));
  padding-block: calc(var(--nav-h) + clamp(28px, 4vw, 52px)) clamp(24px, 3vw, 40px);
  text-align: center;
  background:
    radial-gradient(60% 50% at 50% 0%, var(--glow), transparent 70%),
    var(--bg);
}
.hero-inner { display: flex; flex-direction: column; align-items: center; }
.motif { display: flex; gap: 6px; margin-bottom: 18px; }
.motif i { display: block; width: 22px; height: 5px; border-radius: 3px; background: var(--line-strong); }
.motif i:nth-child(4) { background: var(--accent); }
.eyebrow {
  font: 500 0.75rem/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted);
  margin-bottom: 16px;
}
h1 {
  font: 500 clamp(2.25rem, 1.2rem + 4.6vw, 4.5rem)/1.04 var(--serif);
  letter-spacing: -0.022em;
  max-width: 15em;
}
.title-accent { display: block; color: var(--accent); font-style: italic; font-weight: 400; }
.pitch {
  font: 500 clamp(2.25rem, 1.2rem + 3.6vw, 3.75rem)/1.04 var(--serif);
  letter-spacing: -0.022em; max-width: 15em; color: var(--ink); text-wrap: balance;
}
.why {
  margin-top: 12px; max-width: 42rem;
  font-size: 0.9375rem; line-height: 1.55; color: var(--muted);
}
.pitch-actions {
  margin-top: 22px; display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 10px;
}
.install-chip {
  display: inline-flex; align-items: center; gap: 12px;
  min-height: 44px; padding: 5px 6px 5px 18px; border-radius: 999px;
  background: var(--code-bg); color: var(--code-ink); box-shadow: var(--shadow-sm);
  font: 400 0.875rem/1 var(--mono);
}
.install-chip code { font: inherit; white-space: nowrap; }
.hero-paper {
  margin-top: clamp(32px, 4vw, 44px); padding-top: clamp(24px, 3vw, 32px);
  border-top: 1px solid var(--line); width: 100%; max-width: 54rem;
  display: flex; flex-direction: column; align-items: center;
}
.hero-paper .eyebrow { margin-bottom: 16px; }
.hero-paper h1 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.75rem); line-height: 1.1; max-width: 18em; }
.hero-paper .authors { margin-top: 18px; }
.hero-paper .actions { margin-top: 20px; }
.dek {
  margin-top: 18px; max-width: 44rem;
  font-size: clamp(1.0625rem, 0.95rem + 0.5vw, 1.25rem); line-height: 1.55; color: var(--ink-2);
}
.authors {
  margin-top: 30px;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 22px;
  font: 500 1.0625rem/1.5 var(--sans); color: var(--ink);
}
.authors sup { color: var(--accent); font-weight: 600; margin-left: 1px; }
.authors a, .footer-authors a { color: inherit; text-decoration: none; }
.authors a:hover, .footer-authors a:hover { color: var(--accent); text-decoration: underline; }
.affils {
  margin-top: 6px;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 2px 18px;
  font-size: 0.9375rem; color: var(--muted);
}
.affils sup { margin-right: 2px; }
.actions { margin-top: 28px; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 44px; padding: 0 18px; border-radius: 999px;
  border: 1px solid var(--line-strong); background: var(--bg-elev); color: var(--ink);
  font: 500 0.9375rem/1 var(--sans); text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}
.btn:hover { color: var(--accent); border-color: var(--accent); }
.btn svg { flex: none; }
.btn-primary { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-soon { color: var(--muted); background: transparent; border-style: dashed; box-shadow: none; cursor: default; }
.btn-soon:hover { color: var(--muted); border-color: var(--line-strong); }
.btn .soon {
  font: 500 0.6875rem/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase;
  padding: 4px 7px; border-radius: 999px; background: var(--band); color: var(--muted);
}

/* video */
.video-card { margin: 0 auto clamp(32px, 5vw, 48px); width: 100%; max-width: 1040px; }
.video-shell {
  position: relative; overflow: hidden;
  border-radius: clamp(12px, 1.6vw, 20px);
  background: #121211;
  box-shadow: var(--shadow-lg);
  outline: 1px solid rgb(255 255 255 / 0.06);
  outline-offset: -1px;
  aspect-ratio: 16 / 9;
}
.video-shell video { width: 100%; height: 100%; object-fit: contain; background: #121211; }
.video-shell.is-fallback video { background: #FFFFFF; }
/* ---------- sections ---------- */
.section { padding-block: clamp(64px, 9vw, 120px); scroll-margin-top: var(--nav-h); }
.band { background: var(--band); border-block: 1px solid var(--line); }
.kicker {
  font: 500 0.75rem/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
h2 {
  font: 500 clamp(1.875rem, 1.3rem + 2.2vw, 2.75rem)/1.1 var(--serif);
  letter-spacing: -0.018em;
}
.section-head { max-width: 46rem; margin-bottom: clamp(28px, 4vw, 44px); }
.section-lede { margin-top: 16px; font-size: 1.125rem; line-height: 1.6; color: var(--ink-2); }

/* TL;DR stats */
.stats { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 560px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1040px) { .stats { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; } }
.stat {
  display: flex; flex-direction: column; gap: 14px;
  padding: 24px 22px 22px;
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.stat-value {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: 0 8px;
  font: 650 clamp(2.5rem, 1.9rem + 1.6vw, 3rem)/1 var(--sans);
  letter-spacing: -0.035em;
}
.stat-value .was { color: var(--muted); font-size: 0.56em; font-weight: 500; letter-spacing: -0.02em; }
.stat-value .arrow { color: var(--muted); font-size: 0.5em; font-weight: 400; letter-spacing: 0; }
.stat-value .now { color: var(--accent); }
.stat-label { font-size: 0.9375rem; line-height: 1.5; color: var(--ink-2); }
@media (min-width: 560px) {
  .stat-value { min-height: 5.2rem; align-content: flex-end; }
}

/* abstract */
.split { display: grid; gap: 20px; }
@media (min-width: 900px) {
  .split { grid-template-columns: minmax(0, 1fr) minmax(0, 2.4fr); gap: 56px; }
  .split-head { position: sticky; top: calc(var(--nav-h) + 32px); align-self: start; }
}
.abstract {
  font: 400 clamp(1.125rem, 1.02rem + 0.35vw, 1.3125rem)/1.62 var(--serif);
  color: var(--ink); max-width: 44rem;
}

/* overview */
.duo { display: grid; gap: 40px; }
@media (min-width: 860px) { .duo { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 64px; } }
.duo-item h2 { margin-bottom: 16px; }
.duo-item p:not(.kicker) { color: var(--ink-2); max-width: 36rem; }
.duo-item#lasagna { scroll-margin-top: calc(var(--nav-h) + 16px); }

/* figures */
.figure { margin: 0; }
.figure-key { margin-top: clamp(40px, 6vw, 72px); max-width: 1040px; margin-inline: auto; }
.plate {
  position: relative; display: block;
  padding: clamp(10px, 2vw, 24px);
  background: var(--plate); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  cursor: zoom-in;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.plate:hover { border-color: var(--line-strong); box-shadow: var(--shadow-lg); }
.plate img { width: 100%; }
.zoom-hint {
  position: absolute; right: 12px; bottom: 12px;
  padding: 6px 10px; border-radius: 999px;
  background: rgb(20 23 28 / 0.78); color: #FFFFFF;
  font: 500 0.75rem/1 var(--sans);
  opacity: 0; transition: opacity 0.2s ease;
}
.plate:hover .zoom-hint, .plate:focus-visible .zoom-hint { opacity: 1; }
@media (hover: none) { .zoom-hint { display: none; } }
figcaption {
  margin: 16px auto 0; max-width: 46rem;
  font-size: 0.9375rem; line-height: 1.6; color: var(--muted);
}
.figure-key figcaption { text-align: center; }

.fig-wrap { max-width: 1000px; margin-inline: auto; }
.fig-pair { display: grid; gap: 40px; justify-items: center; }
.fig-pair .figure { width: 100%; max-width: 560px; }
@media (min-width: 880px) {
  .fig-pair { grid-template-columns: minmax(0, 0.709fr) minmax(0, 1fr); grid-template-rows: auto auto; gap: 0 28px; }
  .fig-pair .figure { max-width: none; display: grid; grid-row: span 2; grid-template-rows: subgrid; }
  .fig-pair .plate { display: flex; align-items: center; }
  .fig-pair figcaption { margin-top: 16px; }
}

/* findings */
.findings { display: grid; gap: 16px; counter-reset: finding; }
@media (min-width: 900px) { .findings { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; } }
.finding {
  counter-increment: finding;
  position: relative;
  padding: 28px 26px 28px;
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 14px;
}
.finding::before {
  content: counter(finding, decimal-leading-zero);
  font: italic 400 3.25rem/0.9 var(--serif);
  color: var(--accent);
  letter-spacing: -0.02em;
}
.finding h3 { font: 500 1.5rem/1.2 var(--serif); letter-spacing: -0.01em; }
.finding p { color: var(--ink-2); font-size: 1rem; }

/* results table */
.table-card {
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); overflow-x: auto;
}
table { width: 100%; border-collapse: collapse; font-size: 1rem; }
th, td { padding: 16px 18px; text-align: left; vertical-align: top; border-top: 1px solid var(--line); }
thead th {
  border-top: 0; padding-block: 14px;
  font: 500 0.6875rem/1.3 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted);
}
tbody th { font-weight: 500; color: var(--ink); }
td { color: var(--ink-2); }
.num { font-variant-numeric: tabular-nums; min-width: 96px; }
.cell-val { display: block; font-size: 1.125rem; font-weight: 500; color: var(--ink-2); }
strong.cell-val { color: var(--accent); font-weight: 650; }
.bar {
  --track: 112px;
  display: block; height: 6px; margin-top: 8px; border-radius: 3px;
  width: calc(var(--v) / 47 * var(--track)); max-width: 100%;
}
.bar-pred { background: var(--bar-pred); }
.bar-real { background: var(--accent); }
.num { width: 150px; }
@media (max-width: 599px) {
  .table-card { overflow: visible; }
  table, tbody { display: block; }
  thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  tbody tr {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 14px;
    padding: 18px 18px 20px; border-top: 1px solid var(--line);
  }
  tbody tr:first-child { border-top: 0; }
  tbody th, tbody td { display: block; padding: 0; border: 0; width: auto; min-width: 0; }
  tbody th { grid-column: 1 / -1; font-size: 1.0625rem; }
  tbody td::before {
    content: attr(data-label); display: block; margin-bottom: 6px;
    font: 500 0.625rem/1.2 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted);
  }
  .num { width: auto; min-width: 0; }
  .bar { --track: 84px; }
}

/* takeaway */
.takeaway { text-align: center; background: radial-gradient(ellipse 55% 50% at 50% 55%, var(--glow), transparent 100%), var(--bg); }
.takeaway .kicker { margin-bottom: 14px; }
.takeaway h2 { font-size: clamp(1.125rem, 1rem + 0.4vw, 1.25rem); font-family: var(--sans); font-weight: 600; letter-spacing: 0; color: var(--muted); }
.takeaway-text {
  margin: 18px auto 0; max-width: 24ch;
  font: 400 clamp(1.875rem, 1.1rem + 3vw, 3.25rem)/1.14 var(--serif);
  letter-spacing: -0.02em; color: var(--ink); text-wrap: balance;
}
.takeaway-sub { margin-top: 22px; color: var(--ink-2); font-size: 1.0625rem; }

/* develop */
#develop { padding-top: clamp(32px, 4vw, 56px); }
.steps { display: grid; gap: clamp(36px, 5vw, 56px); counter-reset: none; }
.step { display: grid; gap: 20px; }
@media (min-width: 900px) { .step { grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 56px; align-items: start; } }
.step-text h3 { font: 500 1.625rem/1.2 var(--serif); letter-spacing: -0.01em; margin-bottom: 12px; }
.step-text p:not(.step-num) { color: var(--ink-2); max-width: 30rem; }
.step-num {
  display: inline-grid; place-items: center; width: 34px; height: 34px; margin-bottom: 14px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent); font: 600 0.9375rem/1 var(--sans);
}
.step-code { display: grid; gap: 14px; min-width: 0; }
.develop-links { margin-top: 32px; text-align: center; }
.release-links { display: grid; gap: 12px; max-width: 46rem; margin-bottom: clamp(36px, 5vw, 56px); }
.release-links p { color: var(--ink-2); }
.link-arrow { font-weight: 600; text-decoration: none; }
.link-arrow:hover { text-decoration: underline; }
.use-facts { margin-top: 0; }
.demo-figure { margin: clamp(40px, 6vw, 64px) auto 0; max-width: 860px; }
.demo-figure video { display: block; width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line-strong); background: #0D0F12; }
.demo-figure figcaption { margin-top: 10px; text-align: center; color: var(--ink-2); font-size: 0.9rem; }
.repro { margin-top: clamp(48px, 7vw, 80px); }
.repro-lede { color: var(--ink-2); max-width: 46rem; margin-bottom: 18px; }
.repro .num { width: auto; min-width: 0; }
.repro td strong { color: var(--accent); font-weight: 600; }
.repro-note { margin-top: 10px; color: var(--muted); font-size: 0.875rem; }
.repro-note + p { margin-top: 12px; }
@media (max-width: 599px) {
  .repro tbody tr { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.use-facts-title { font: 500 1.5rem/1.2 var(--serif); letter-spacing: -0.01em; margin-bottom: 18px; }

.code-block {
  min-width: 0;
  background: var(--code-bg); color: var(--code-ink);
  border-radius: var(--radius); border: 1px solid rgb(255 255 255 / 0.06);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.code-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 12px 10px 18px; border-bottom: 1px solid rgb(255 255 255 / 0.08);
  font: 500 0.75rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--code-muted);
}
.code-block pre {
  margin: 0; padding: 18px; overflow-x: auto;
  font: 400 0.875rem/1.7 var(--mono); color: var(--code-ink); tab-size: 2;
}
.code-block code { font: inherit; }
.tok-k { color: var(--code-key); }
.tok-s { color: var(--code-str); }
.tok-c { color: var(--code-muted); }
.copy {
  min-height: 32px; padding: 0 12px; border-radius: 8px;
  border: 1px solid rgb(255 255 255 / 0.16); background: rgb(255 255 255 / 0.06); color: var(--code-ink);
  font: 500 0.8125rem/1 var(--sans); letter-spacing: 0; text-transform: none; cursor: pointer;
}
.copy:hover { background: rgb(255 255 255 / 0.14); }
.copy:focus-visible { outline-color: var(--code-key); }
.copy[hidden] { display: none; }
.code-bib { margin-top: 28px; }

/* terms */
.terms { display: grid; gap: 14px; margin: 0; }
@media (min-width: 760px) { .terms { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; } }
.term {
  padding: 22px 24px; border-radius: var(--radius);
  background: var(--bg-elev); border: 1px solid var(--line);
}
.term dt { font: 600 1.0625rem/1.3 var(--sans); color: var(--ink); }
.term dd { margin: 8px 0 0; color: var(--ink-2); font-size: 0.9875rem; }

/* faq */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  padding: 22px 4px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary h3 { font: 500 1.1875rem/1.4 var(--sans); letter-spacing: -0.01em; }
.faq summary::after {
  content: ""; flex: none; width: 28px; height: 28px; margin-top: -1px; border-radius: 999px;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(var(--ink-2), var(--ink-2)) center / 11px 1.6px no-repeat,
    linear-gradient(var(--ink-2), var(--ink-2)) center / 1.6px 11px no-repeat;
  transition: transform 0.2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover h3 { color: var(--accent); }
.faq details p { padding: 0 52px 24px 4px; color: var(--ink-2); max-width: 46rem; }

/* footer */
.footer { border-top: 1px solid var(--line); padding-block: 36px 48px; color: var(--muted); font-size: 0.9375rem; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 28px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.footer-links a { color: var(--ink-2); text-decoration: none; }
.footer-links a:hover { color: var(--accent); text-decoration: underline; }

/* lightbox */
.lightbox {
  width: min(1400px, calc(100vw - 24px)); max-width: none; max-height: calc(100dvh - 24px);
  padding: 0; border: 0; border-radius: var(--radius);
  background: var(--plate); color: #14171C;
  box-shadow: 0 40px 120px rgb(0 0 0 / 0.5);
  overflow: auto;
}
.lightbox::backdrop { background: rgb(8 10 12 / 0.78); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.lightbox-inner { position: relative; padding: 52px clamp(12px, 3vw, 32px) 24px; }
.lightbox form { position: absolute; top: 10px; right: 10px; margin: 0; }
.lightbox-close {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 999px;
  border: 1px solid #D9D6CD; background: #FFFFFF; color: #14171C; cursor: pointer;
}
.lightbox-close:hover { border-color: #1B5EA8; color: #1B5EA8; }
.lightbox-close:focus-visible { outline-color: #1B5EA8; }
.lightbox img { width: 100%; height: auto; max-height: calc(100dvh - 190px); object-fit: contain; margin-inline: auto; }
.lightbox-caption { margin: 16px auto 0; max-width: 52rem; font-size: 0.9375rem; line-height: 1.6; color: #4A505A; text-align: center; }

/* ---------- motion ---------- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  .js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1); }
  .js .reveal.is-visible { opacity: 1; transform: none; }
  .stats .reveal:nth-child(2), .findings .reveal:nth-child(2), .terms .reveal:nth-child(2) { transition-delay: 0.06s; }
  .stats .reveal:nth-child(3), .findings .reveal:nth-child(3), .terms .reveal:nth-child(3) { transition-delay: 0.12s; }
  .stats .reveal:nth-child(4), .terms .reveal:nth-child(4) { transition-delay: 0.18s; }
  .btn:hover { transform: translateY(-1px); }
  .lightbox[open] { animation: lb-in 0.22s ease; }
}
@keyframes lb-in { from { opacity: 0; transform: scale(0.98); } to { opacity: 1; transform: none; } }

@media (forced-colors: active) {
  .bar { forced-color-adjust: none; border: 1px solid CanvasText; }
  .btn, .stat, .finding, .term, .plate { border: 1px solid CanvasText; }
}

@media print {
  .nav, .copy, .theme-toggle, .skip, .video-card { display: none !important; }
  .js .reveal { opacity: 1 !important; transform: none !important; }
  .band { background: none; }
}