/* AI Safety Sandbox: styles. Design language from the "AI Safety Project Explorer" template:
   warm off-white, Inter body, Space Grotesk headings, rounded cards, pill buttons. */

@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400 700; font-display: swap; src: url(/assets/fonts/inter-latin.76658c7519.woff2) format('woff2'); }
@font-face { font-family: 'Space Grotesk'; font-style: normal; font-weight: 500 700; font-display: swap; src: url(/assets/fonts/space-grotesk-latin.f696a29d5c.woff2) format('woff2'); }

/* ---------- Tokens ---------- */
:root {
  color-scheme: light;
  --bg: #F6F5F1; --surface: #FFFFFF; --surface-2: #FBFAF7; --sunken: #EFEDE6;
  --ink: #15171C; --muted: #4A505B; --subtle: #646A75;
  --line: #E3E1DA; --line-strong: #CFCCC2;
  --accent: #2747C9; --accent-hover: #1A3296; --accent-ink: #FFFFFF; --accent-soft: #E8ECFB; --accent-text: #23399E;
  --warm: #FBE7B5; --warm-ink: #5C3D00;
  --ok: #1D7A4A; --ok-soft: #E6F4EC; --ok-line: #A9D5B8;
  --warn-bg: #FDF1D6; --warn-line: #EBCB7B; --warn-ink: #5C3D00;
  --info-bg: #EEF1FC; --info-line: #C6D0F5;
  --dark-panel: #15171C; --dark-panel-ink: #DCDAD3;
  --shadow: 0 1px 2px rgba(21, 23, 28, .05), 0 4px 16px rgba(21, 23, 28, .04);
  --shadow-hover: 0 2px 4px rgba(21, 23, 28, .06), 0 10px 28px rgba(21, 23, 28, .08);
  --radius: 18px; --radius-sm: 12px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-head: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --wrap: 1160px;
  --t-technical: #23399E; --t-technical-bg: #E3E8FB;
  --t-biosecurity: #0D6352; --t-biosecurity-bg: #D7F0E9;
  --t-governance: #5B2D86; --t-governance-bg: #EEE4F7;
  --t-policy: #933A14; --t-policy-bg: #FBE9D6;
  --t-philosophy: #6E4A00; --t-philosophy-bg: #FBEFC9;
  --net: #2747C9;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0E1014; --surface: #161920; --surface-2: #1A1E26; --sunken: #12151B;
  --ink: #ECEDEF; --muted: #B4B9C3; --subtle: #9298A3;
  --line: #272C36; --line-strong: #3A414E;
  --accent: #8EA2F5; --accent-hover: #B3C1FA; --accent-ink: #0E1014; --accent-soft: #1D2547; --accent-text: #B9C6FA;
  --warm: #F5D88E; --warm-ink: #2A1F05;
  --ok: #5FC78F; --ok-soft: #12291D; --ok-line: #2C6646;
  --warn-bg: #2B230F; --warn-line: #6B5420; --warn-ink: #F5D88E;
  --info-bg: #161D36; --info-line: #2E3B6B;
  --dark-panel: #1B1F28; --dark-panel-ink: #C9CDD5;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3); --shadow-hover: 0 6px 22px rgba(0, 0, 0, .45);
  --t-technical: #B9C6FA; --t-technical-bg: #1E2648;
  --t-biosecurity: #7FD8BF; --t-biosecurity-bg: #0F2E27;
  --t-governance: #D4B8EF; --t-governance-bg: #2B1D3B;
  --t-policy: #F4B48E; --t-policy-bg: #3A2214;
  --t-philosophy: #F1D27E; --t-philosophy-bg: #33280C;
  --net: #8EA2F5;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0E1014; --surface: #161920; --surface-2: #1A1E26; --sunken: #12151B;
    --ink: #ECEDEF; --muted: #B4B9C3; --subtle: #9298A3;
    --line: #272C36; --line-strong: #3A414E;
    --accent: #8EA2F5; --accent-hover: #B3C1FA; --accent-ink: #0E1014; --accent-soft: #1D2547; --accent-text: #B9C6FA;
    --warm: #F5D88E; --warm-ink: #2A1F05;
    --ok: #5FC78F; --ok-soft: #12291D; --ok-line: #2C6646;
    --warn-bg: #2B230F; --warn-line: #6B5420; --warn-ink: #F5D88E;
    --info-bg: #161D36; --info-line: #2E3B6B;
    --dark-panel: #1B1F28; --dark-panel-ink: #C9CDD5;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3); --shadow-hover: 0 6px 22px rgba(0, 0, 0, .45);
    --t-technical: #B9C6FA; --t-technical-bg: #1E2648;
    --t-biosecurity: #7FD8BF; --t-biosecurity-bg: #0F2E27;
    --t-governance: #D4B8EF; --t-governance-bg: #2B1D3B;
    --t-policy: #F4B48E; --t-policy-bg: #3A2214;
    --t-philosophy: #F1D27E; --t-philosophy-bg: #33280C;
    --net: #8EA2F5;
  }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.6 var(--font); text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; }
img, svg { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-hover); }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.15; letter-spacing: -0.01em; margin: 0; }
p { margin: 0 0 .9em; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0; padding: 0; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
main:focus { outline: none; }
.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-link { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-weight: 600; text-decoration: none; }
.skip-link:focus { top: 12px; color: var(--bg); }
.ic { width: 1.1em; height: 1.1em; flex: none; vertical-align: -0.15em; }
.ic.ext { width: .8em; height: .8em; margin-left: .25em; opacity: .7; }
.muted { color: var(--muted); }
[hidden] { display: none !important; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: 24px; }
.section { padding-block: 72px 8px; }
.section-tight { padding-block: 40px 8px; }
.eyebrow { margin: 0 0 10px; font-size: 14px; font-weight: 700; color: var(--accent-text); text-transform: uppercase; letter-spacing: .08em; display: flex; align-items: center; gap: 8px; }
.eyebrow-warm { color: var(--warm); }
.lede { font-size: 19px; color: var(--muted); max-width: 720px; }
.h-sub { font-size: 24px; margin-bottom: 6px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.h-count { font: 600 14px/1 var(--font); color: var(--muted); background: var(--sunken); border: 1px solid var(--line); padding: 5px 9px; border-radius: 999px; }
.sec-head { display: flex; flex-direction: column; gap: 8px; margin-bottom: 28px; }
.sec-head h2 { font-size: clamp(28px, 4vw, 38px); }
.more-link { margin-top: 18px; font-weight: 600; }
.more-link a { display: inline-flex; align-items: center; gap: 6px; text-decoration: none; }
.source-note { font-size: 14px; color: var(--subtle); margin-top: 32px; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--surface) 88%, transparent); background: var(--surface); border-bottom: 1px solid var(--line); }
@supports (backdrop-filter: blur(8px)) { .site-header { background: color-mix(in srgb, var(--surface) 86%, transparent); backdrop-filter: saturate(1.4) blur(10px); } }
.header-row { display: flex; align-items: center; gap: 16px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; flex: none; }
.brand:hover { color: var(--ink); }
.brand-name { font: 700 19px/1 var(--font-head); }
.main-nav { margin-left: auto; display: flex; align-items: center; }
.nav-links { list-style: none; display: flex; align-items: center; gap: 4px; }
.nav-links a { display: inline-flex; align-items: center; white-space: nowrap; min-height: 44px; padding: 8px 13px; border-radius: 10px; color: var(--ink); text-decoration: none; font-weight: 500; font-size: 16px; }
.nav-links a:hover { background: var(--sunken); color: var(--ink); }
.nav-links a[aria-current="page"] { background: var(--accent-soft); color: var(--accent-text); }
.nav-links a.nav-cta { background: var(--accent); color: var(--accent-ink); border-radius: 999px; padding-inline: 18px; font-weight: 600; margin-right: 4px; }
.nav-links a.nav-cta:hover { background: var(--accent-hover); color: var(--accent-ink); }
.nav-links a.nav-cta[aria-current="page"] { box-shadow: 0 0 0 3px var(--accent-soft); }
/* Library and Search are the two features to point people at, after the main button. */
.nav-links a.nav-feature, .icon-btn.tool-search { background: var(--accent-soft); color: var(--accent-text); border: 1.5px solid var(--accent); border-radius: 999px; font-weight: 600; }
.nav-links a.nav-feature { gap: 7px; padding-inline: 15px; margin-inline: 2px; }
.nav-links a.nav-feature .ic, .icon-btn.tool-search .ic { width: 18px; height: 18px; }
.nav-links a.nav-feature:hover, .icon-btn.tool-search:hover { background: var(--accent-soft); color: var(--accent-text); border-color: var(--accent-hover); box-shadow: 0 0 0 2px var(--accent-soft); }
.nav-links a.nav-feature[aria-current="page"], .icon-btn.tool-search[aria-current="page"] { background: var(--accent-soft); color: var(--accent-text); box-shadow: 0 0 0 3px var(--accent-soft); }
.icon-btn.tool-search { display: inline-flex; align-items: center; justify-content: center; gap: 7px; width: auto; padding-inline: 15px; font-size: 16px; text-decoration: none; }
@media (max-width: 1120px) { .icon-btn.tool-search { width: 44px; padding: 0; } .tool-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; } }
@media (max-width: 400px) { .icon-btn.tool-search { width: 40px; } }
@media (max-width: 350px) { .brand-name { font-size: 14px !important; } .brand { gap: 6px !important; } }
.nav-toggle { display: none; }
.header-tools { display: flex; gap: 4px; }
.icon-btn { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; border: 1px solid transparent; background: none; color: var(--ink); cursor: pointer; }
.icon-btn:hover { background: var(--sunken); color: var(--ink); }
.icon-btn .ic { width: 22px; height: 22px; }
.icon-btn[aria-current="page"] { background: var(--accent-soft); color: var(--accent-text); }
.theme-toggle .i-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .i-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .i-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .i-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .i-moon { display: none; }
}
@media (max-width: 980px) {
  .header-row { flex-wrap: wrap; }
  .main-nav { order: 3; width: 100%; margin-left: 0; }
  .nav-links { flex-wrap: wrap; padding-bottom: 10px; }
  .header-tools { margin-left: auto; }
  .js .nav-toggle { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 14px; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--surface); color: var(--ink); font: 600 15px var(--font); cursor: pointer; margin-left: auto; }
  .js .main-nav { order: 0; width: auto; margin-left: auto; }
  .js .nav-links { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--surface); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-hover); flex-direction: column; align-items: stretch; padding: 10px 16px 16px; gap: 2px; }
  .js .main-nav.open .nav-links { display: flex; }
  .js .nav-links a { min-height: 48px; font-size: 17px; }
  .js .nav-links a.nav-cta { justify-content: center; margin: 4px 0 6px; }
  .js .header-tools { margin-left: 4px; }
  .nav-toggle .i-close, .main-nav.open .nav-toggle .i-open { display: none; }
  .main-nav.open .nav-toggle .i-close { display: block; }
}
@media (max-width: 520px) {
  .header-row { gap: 6px; }
  .js .nav-toggle { width: 44px; height: 44px; padding: 0; justify-content: center; }
  .js .nav-toggle span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
  .js .nav-toggle .ic { width: 22px; height: 22px; }
  .brand-name { font-size: 18px; }
}
@media (max-width: 400px) {
  .brand { gap: 8px; }
  .brand-name { font-size: 16px; }
  .logo-mark { width: 26px; height: 26px; }
  .icon-btn, .js .nav-toggle { width: 40px; height: 40px; }
}

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 12px 22px; border-radius: 999px; font: 600 16px/1.2 var(--font); text-decoration: none; cursor: pointer; border: 1.5px solid transparent; transition: background-color .15s, border-color .15s, transform .15s; }
.btn:active { transform: translateY(1px); }
.btn-lg { min-height: 56px; padding: 16px 28px; font-size: 17px; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-hover); color: var(--accent-ink); }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn-ghost[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-text); }
.btn-warm { background: var(--warm); color: #15171C; }
.btn-warm:hover { background: #F7DB93; color: #15171C; }
.btn-link { background: none; border: 0; padding: 6px 2px; font: 600 15px var(--font); color: var(--accent); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; min-height: 44px; }

/* ---------- Chips, badges, tags ---------- */
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border-radius: 999px; font-size: 14px; font-weight: 600; line-height: 1.2; }
.chip-sm { font-size: 13px; padding: 4px 10px; }
.chip .ic { width: 15px; height: 15px; }
.t-technical { --th: var(--t-technical); --th-bg: var(--t-technical-bg); }
.t-biosecurity { --th: var(--t-biosecurity); --th-bg: var(--t-biosecurity-bg); }
.t-governance { --th: var(--t-governance); --th-bg: var(--t-governance-bg); }
.t-policy { --th: var(--t-policy); --th-bg: var(--t-policy-bg); }
.t-philosophy { --th: var(--t-philosophy); --th-bg: var(--t-philosophy-bg); }
.chip[class*="t-"] { background: var(--th-bg); color: var(--th); }
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border-radius: 999px; font-size: 13px; font-weight: 600; background: var(--surface); color: var(--muted); border: 1px solid var(--line-strong); line-height: 1.2; }
.badge .ic { width: 14px; height: 14px; }
.badge-guide { background: var(--ok-soft); color: var(--ok); border-color: var(--ok-line); }
.st-done { background: var(--ok-soft); color: var(--ok); border-color: var(--ok-line); }
.st-claimed { background: var(--warn-bg); color: var(--warn-ink); border-color: var(--warn-line); }
.tag { display: inline-block; padding: 3px 9px; border-radius: 8px; background: var(--sunken); border: 1px solid var(--line); color: var(--muted); font-size: 13px; font-weight: 500; line-height: 1.35; }
.tag-btn { cursor: pointer; font-family: var(--font); min-height: 36px; padding: 6px 12px; border-radius: 999px; }
.tag-btn:hover { border-color: var(--accent); color: var(--accent-text); }
.fmt { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; color: var(--muted); }
.fmts { display: inline-flex; flex-wrap: wrap; gap: 4px 12px; }
.opt-tag { font: 600 12px/1 var(--font); color: var(--muted); background: var(--sunken); padding: 4px 8px; border-radius: 999px; vertical-align: middle; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); }
.card { position: relative; background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); transition: border-color .15s, box-shadow .15s, transform .15s; }
.card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-hover); }
.pcard, .mcard { display: flex; flex-direction: column; gap: 12px; padding: 22px; }
.card-top { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.card-title { font-size: 21px; font-weight: 600; line-height: 1.25; }
.card-title a { color: var(--ink); text-decoration: none; }
.card-title a:hover { color: var(--accent); }
.stretch::after { content: ""; position: absolute; inset: 0; border-radius: var(--radius); }
.above { position: relative; z-index: 2; }
.card-text { color: var(--muted); font-size: 16px; }
.clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { font-size: 14px; color: var(--subtle); }
.card-foot { margin-top: auto; padding-top: 6px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.go { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--accent); font-size: 15px; }
.pcard:hover .go .ic { transform: translateX(3px); }
.go .ic { transition: transform .15s; }
.reasons { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.reasons li { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; font-weight: 600; color: var(--ok); background: var(--ok-soft); border-radius: 999px; padding: 4px 10px; }
.reasons .ic { width: 13px; height: 13px; }
.areas { display: flex; flex-wrap: wrap; gap: 6px; }
.warmup { display: flex; gap: 8px; align-items: flex-start; font-size: 14px; color: var(--muted); background: var(--surface-2); border: 1px dashed var(--line-strong); border-radius: 12px; padding: 10px 12px; margin-top: auto; }
.warmup .ic { color: var(--accent); margin-top: 3px; }
.warmup a { font-weight: 600; }

/* ---------- Mosaic (half-square triangle pattern) ---------- */
:root { --mz-grout: #E6E2D7; --mz-a: #FFFFFF; --mz-b: #F3EDDF; --mz-1: #2747C9; --mz-2: #B4441C; --mz-3: #0F6E5C; --mz-4: #15171C; }
:root[data-theme="dark"] { --mz-grout: #0B0D11; --mz-a: #1A1E26; --mz-b: #222733; --mz-1: #8EA2F5; --mz-2: #E58A63; --mz-3: #63C7A8; --mz-4: #D9DBE0; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --mz-grout: #0B0D11; --mz-a: #1A1E26; --mz-b: #222733; --mz-1: #8EA2F5; --mz-2: #E58A63; --mz-3: #63C7A8; --mz-4: #D9DBE0; }
}
.mosaic { display: block; width: 100%; height: 100%; }
.mosaic .mz-g { fill: var(--mz-grout); }
.mosaic .mz-a { fill: var(--mz-a); }
.mosaic .mz-b { fill: var(--mz-b); }
.mosaic .mz-1 { fill: var(--mz-1); }
.mosaic .mz-2 { fill: var(--mz-2); }
.mosaic .mz-3 { fill: var(--mz-3); }
.mosaic .mz-4 { fill: var(--mz-4); }
.mosaic-strip { height: 12px; }

/* ---------- Hero ---------- */
.hero { border-bottom: 1px solid var(--line); }
.hero-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 400px); gap: 56px; align-items: center; padding-block: 72px 64px; }
.hero-text { display: flex; flex-direction: column; align-items: flex-start; gap: 22px; min-width: 0; }
.hero h1 { font-size: clamp(38px, 5.2vw, 62px); line-height: 1.05; letter-spacing: -0.025em; font-weight: 700; }
.hero-lede { font-size: clamp(18px, 2vw, 20px); color: var(--muted); max-width: 600px; margin: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-facts { margin: 0; font-size: 15px; color: var(--subtle); }
.hero-art { aspect-ratio: 1; border-radius: 6px; overflow: hidden; box-shadow: var(--shadow); }
.hero-strip { display: none; }
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 32px; padding-block: 44px 0; }
  .hero-art { display: none; }
  .hero-strip { display: block; height: 64px; margin-inline: -24px; }
}
@media (max-width: 640px) { .hero-inner { padding-top: 36px; } .hero-strip { margin-inline: -16px; height: 56px; } }

/* ---------- Home: continue + background picker ---------- */
.continue { padding-block: 28px 0; }
.continue h2 { font-size: 22px; margin-bottom: 12px; }
.continue-list { list-style: none; display: flex; flex-wrap: wrap; gap: 12px; }
.continue-list a { display: flex; flex-direction: column; gap: 6px; min-width: 260px; padding: 14px 18px; border-radius: 14px; background: var(--surface); border: 1.5px solid var(--line); color: var(--ink); text-decoration: none; font-weight: 600; }
.continue-list a:hover { border-color: var(--accent); }
.continue-list .mini-bar { height: 6px; border-radius: 99px; background: var(--sunken); overflow: hidden; }
.continue-list .mini-bar span { display: block; height: 100%; background: var(--ok); }
.continue-list small { color: var(--muted); font-weight: 500; }
.band { padding-block: 72px; border-bottom: 1px solid var(--line); }
.band-white { background: var(--surface); border-top: 1px solid var(--line); }
.picks { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr)); gap: 12px; margin-bottom: 32px; }
.pick { display: flex; flex-direction: column; gap: 4px; text-align: left; padding: 18px 20px; min-height: 92px; border-radius: 16px; background: var(--surface); border: 1.5px solid var(--line-strong); color: var(--ink); text-decoration: none; cursor: pointer; }
.pick:hover { border-color: var(--accent); color: var(--ink); }
.pick.is-on, .pick[aria-pressed="true"] { background: var(--accent-soft); border: 2.5px solid var(--accent); padding: 17px 19px; }
.pick-label { font: 600 19px/1.25 var(--font-head); }
.pick-sub { font-size: 15px; color: var(--muted); }
.panel-title { font: 600 19px var(--font); margin-bottom: 16px; }
.panel-more { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }

/* ---------- Home: themes, how, dark panel, ctas ---------- */
.theme-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr)); gap: 14px; }
.theme-card { display: flex; flex-direction: column; gap: 10px; padding: 22px; text-decoration: none; color: var(--ink); border-top: 5px solid var(--th); }
.theme-card:hover { color: var(--ink); transform: translateY(-2px); }
.theme-icon { display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 13px; background: var(--th-bg); color: var(--th); }
.theme-icon .ic { width: 24px; height: 24px; }
.theme-name { font: 700 20px/1.2 var(--font-head); }
.theme-line { color: var(--muted); font-size: 15px; }
.theme-count { margin-top: auto; font-size: 13px; font-weight: 600; color: var(--th); }
.how { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 18px; }
.how li { display: flex; flex-direction: column; gap: 10px; padding: 26px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); color: var(--muted); }
.how-num { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-text); font: 700 20px var(--font-head); }
.how-title { font: 600 21px/1.25 var(--font-head); color: var(--ink); }
.dark-panel { display: flex; flex-wrap: wrap; gap: 36px; padding: 48px; background: var(--dark-panel); color: #F6F5F1; border-radius: 24px; }
.dark-intro { flex: 1 1 280px; }
.dark-intro h2 { font-size: clamp(28px, 4vw, 36px); color: #F6F5F1; }
.dark-body { flex: 2 1 420px; display: flex; flex-direction: column; gap: 14px; font-size: 18px; color: var(--dark-panel-ink); align-items: flex-start; }
.cta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); gap: 18px; padding-bottom: 72px; }
.cta-card { display: flex; flex-direction: column; gap: 10px; padding: 26px; text-decoration: none; color: var(--muted); }
.cta-card .ic { width: 28px; height: 28px; color: var(--accent); }
.cta-card:hover { color: var(--muted); }
.cta-title { font: 600 21px var(--font-head); color: var(--ink); }

/* ---------- Page heads, tabs ---------- */
.page-head { padding-block: 56px 28px; border-bottom: 1px solid var(--line); background: var(--surface); }
.page-head h1 { font-size: clamp(34px, 5vw, 52px); letter-spacing: -0.02em; margin-bottom: 14px; }
.page-head .lede a { font-weight: 600; }
.tabs { display: flex; gap: 6px; margin-top: 26px; flex-wrap: wrap; }
.tabs a { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 16px; border-radius: 999px; border: 1.5px solid var(--line-strong); color: var(--ink); text-decoration: none; font-weight: 600; }
.tabs a span { font-size: 13px; color: var(--muted); }
.tabs a[aria-current="page"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.tabs a[aria-current="page"] span { color: inherit; opacity: .75; }

/* ---------- Filters ---------- */
.filters { display: flex; flex-direction: column; gap: 14px; padding: 22px; margin-block: 28px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.search-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.search-box { flex: 1 1 280px; display: flex; align-items: center; gap: 10px; min-height: 50px; padding: 0 16px; border: 1.5px solid var(--line-strong); border-radius: 999px; background: var(--surface-2); }
.search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.search-box .ic { color: var(--subtle); }
.search-box input { flex: 1; min-width: 0; border: 0; background: none; font: 16px var(--font); color: var(--ink); padding: 12px 0; }
.search-box input:focus { outline: none; }
.search-box-lg { min-height: 60px; }
.search-box-lg input { font-size: 18px; }
.fgroup { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; }
.flabel { flex: 0 0 120px; font-size: 14px; font-weight: 600; color: var(--muted); }
.fpills { display: flex; flex-wrap: wrap; gap: 6px; }
.fpill { min-height: 40px; padding: 7px 15px; border-radius: 999px; border: 1.5px solid var(--line-strong); background: var(--surface); color: var(--ink); font: 600 14px var(--font); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.fpill:hover { border-color: var(--ink); }
.fpill[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.fstatus { display: flex; align-items: center; justify-content: space-between; gap: 12px; border-top: 1px solid var(--line); padding-top: 12px; }
.count { margin: 0; font-weight: 600; color: var(--muted); }
@media (max-width: 640px) { .flabel { flex-basis: 100%; } .filters { padding: 16px; } }
.empty { text-align: center; padding: 48px 20px; border: 1.5px dashed var(--line-strong); border-radius: var(--radius); margin-top: 24px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.empty-title { font: 600 20px var(--font-head); }
.fallback-band { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; margin-block: 48px 72px; padding: 24px; border-radius: var(--radius); background: var(--accent-soft); border: 1px solid var(--info-line); }
.fallback-band > div:first-child { display: flex; gap: 14px; align-items: flex-start; max-width: 680px; }
.fallback-band > div:first-child > .ic { width: 28px; height: 28px; color: var(--accent); margin-top: 2px; }
.fb-title { font: 600 19px var(--font-head); margin-bottom: 4px; }
.fb-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- Notices ---------- */
.notice { display: flex; gap: 12px; align-items: flex-start; padding: 16px 18px; border-radius: 14px; border: 1px solid var(--info-line); background: var(--info-bg); margin-top: 20px; }
.notice .ic { width: 22px; height: 22px; margin-top: 2px; flex: none; color: var(--accent); }
.notice-warn { background: var(--warn-bg); border-color: var(--warn-line); color: var(--ink); }
.notice-warn .ic { color: var(--warn-ink); }
.notice-info { background: var(--info-bg); }

/* ---------- Project page ---------- */
.crumbs-row { padding-top: 22px; }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 15px; color: var(--subtle); }
.crumbs a { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; min-height: 44px; }
.project-head { padding-block: 10px 28px; display: flex; flex-direction: column; gap: 16px; }
.project-head h1 { font-size: clamp(32px, 5vw, 50px); letter-spacing: -0.02em; max-width: 900px; }
.head-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.head-actions .fmts { margin-left: 6px; }
.project-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 36px; align-items: start; padding-bottom: 24px; }
@media (max-width: 960px) { .project-layout { grid-template-columns: 1fr; } }
.project-main { display: flex; flex-direction: column; gap: 34px; min-width: 0; }
.project-main h2 { font-size: 26px; margin-bottom: 12px; }
.why p { font-size: 18px; }
.output { display: flex; gap: 10px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; margin-top: 14px; }
.output .ic { color: var(--accent); margin-top: 4px; }
.idea-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.idea-list li { display: flex; gap: 10px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.idea-list .ic { color: var(--accent); margin-top: 4px; }
.steps-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 10px; }
.progress-text { font-weight: 600; color: var(--muted); }
.progress { height: 10px; border-radius: 99px; background: var(--sunken); border: 1px solid var(--line); overflow: hidden; margin: 6px 0 18px; }
.progress-bar { height: 100%; width: 0; background: var(--ok); border-radius: 99px; transition: width .3s ease; }
.steps { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.step { display: flex; gap: 16px; padding: 22px; background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--radius); transition: background-color .2s, border-color .2s; }
.step-num { flex: none; width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-text); font: 700 18px var(--font-head); }
.step-num .tick { display: none; width: 22px; height: 22px; stroke-width: 2.8; }
.step.is-done { background: var(--ok-soft); border-color: var(--ok-line); }
.step.is-done .step-num { background: var(--ok); color: #fff; }
.step.is-done .step-num .n { display: none; }
.step.is-done .step-num .tick { display: block; }
.step-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 10px; }
.step-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.step-head h3 { font-size: 20px; }
.step-body p { color: var(--muted); }
.step-line { color: var(--ink) !important; font-size: 17px; }
.example { display: flex; flex-direction: column; gap: 6px; background: var(--surface-2); border-left: 4px solid var(--accent); border-radius: 0 10px 10px 0; padding: 12px 14px; font-size: 15px; }
.example-label { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--accent-text); }
.step-check { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 15px; cursor: pointer; min-height: 44px; align-self: flex-start; }
.step-check input { width: 22px; height: 22px; accent-color: var(--ok); cursor: pointer; margin: 0; }
.done-box { margin-top: 18px; padding: 22px; border-radius: var(--radius); background: var(--ok-soft); border: 1.5px solid var(--ok-line); display: flex; flex-direction: column; gap: 8px; }
.done-title { display: flex; align-items: center; gap: 8px; font: 600 21px var(--font-head); color: var(--ink); }
.done-title .ic { color: var(--ok); }
.done-box .btn { margin: 6px 8px 0 0; }
.project-aside { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 88px; }
@media (max-width: 960px) { .project-aside { position: static; } }
.side-box { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.side-box h2, .side-box h3 { font: 700 13px/1.4 var(--font); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 10px; }
.side-box ul { list-style: none; display: flex; flex-direction: column; gap: 8px; font-size: 16px; }
.side-box ul li { display: flex; gap: 8px; align-items: flex-start; }
.side-box ul li::before { content: ""; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--line-strong); margin-top: .65em; }
.side-box ul li:has(.ic)::before { display: none; }
.side-box li .ic { color: var(--ok); margin-top: 4px; }
.side-box .btn { margin-top: 16px; width: 100%; }
.words dl { margin: 0; display: flex; flex-direction: column; gap: 4px; }
.words dt { font-weight: 700; }
.words dt a { color: var(--ink); text-decoration-color: var(--line-strong); }
.words dd { margin: 0 0 10px; color: var(--muted); font-size: 15px; }
.link-list { margin-top: 10px; font-size: 15px; }
.side-help { background: var(--warm); border-color: transparent; color: #2a2208; }
.side-help h2 { color: #5C3D00; }
.side-help a { color: #15171C; font-weight: 600; }
.two-col { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(380px, 100%), 1fr)); gap: 28px; }
.three-col { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 28px; }
.three-col .h-sub, .two-col .h-sub { margin-bottom: 14px; }
.three-col .h-sub + .res-list + .h-sub, .three-col .res-list + .h-sub { margin-top: 26px; }
.res-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.res { display: flex; flex-wrap: wrap; align-items: baseline; align-content: flex-start; gap: 4px 8px; padding: 12px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
.res-title { font-weight: 600; text-decoration: none; }
.res-title:hover { text-decoration: underline; }
span.res-title { color: var(--ink); }
.res-note { flex-basis: 100%; font-size: 14px; color: var(--muted); }
.res-meta { flex-basis: 100%; font-size: 13px; color: var(--subtle); }
.res .tag { font-size: 12px; }

/* ---------- Theme pages ---------- */
.theme-hero { background: var(--th-bg); border-bottom: 1px solid var(--line); padding-block: 26px 44px; }
.theme-hero-inner { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 40px; align-items: end; }
.theme-hero h1 { font-size: clamp(36px, 5.5vw, 58px); letter-spacing: -0.02em; margin: 14px 0 12px; color: var(--ink); }
.theme-hero .crumbs a { color: var(--th); }
.theme-art { aspect-ratio: 5 / 3; border-radius: 4px; overflow: hidden; }
.theme-art .mosaic { --mz-grout: var(--th-bg); --mz-a: var(--surface); --mz-b: var(--bg); --mz-1: var(--th); --mz-2: var(--ink); }
@media (max-width: 760px) {
  .theme-hero-inner { grid-template-columns: 1fr; gap: 20px; }
  .theme-art { aspect-ratio: auto; height: 54px; }
}
.theme-intro { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 32px; padding-block: 40px 8px; align-items: start; }
.theme-intro h2 { font-size: 26px; margin-bottom: 12px; }
.theme-intro p { font-size: 18px; color: var(--muted); }
.subareas { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.theme-intro .side-box h2 { font: 700 13px/1.4 var(--font); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 10px; }
.theme-intro .side-box li { font-size: 16px; color: var(--ink); }
@media (max-width: 860px) { .theme-intro { grid-template-columns: 1fr; } }
.theme-list { display: flex; flex-direction: column; gap: 18px; padding-block: 36px 72px; }
.theme-row { display: flex; gap: 22px; padding: 28px; background: var(--surface); border: 1.5px solid var(--line); border-left: 6px solid var(--th); border-radius: var(--radius); }
.theme-row h2 { font-size: 28px; margin-bottom: 6px; }
.theme-row h2 a { color: var(--ink); text-decoration: none; }
.theme-row h2 a:hover { color: var(--accent); }
.theme-row p { color: var(--muted); }
.theme-row .theme-line { color: var(--ink); font-weight: 600; }
.theme-row .theme-count { display: block; margin: 8px 0 16px; }
@media (max-width: 640px) { .theme-row { flex-direction: column; padding: 22px; } }

/* ---------- Matcher ---------- */
.match-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 36px; align-items: start; padding-block: 32px 72px; }
@media (max-width: 1040px) { .match-layout { grid-template-columns: 1fr; } }
.matcher { display: flex; flex-direction: column; gap: 22px; }
.q { border: 0; margin: 0; padding: 22px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); min-width: 0; }
.q legend, .q-legend { display: flex; align-items: center; gap: 12px; padding: 0; font: 600 20px/1.3 var(--font-head); margin-bottom: 4px; flex-wrap: wrap; }
.q legend { float: left; width: 100%; flex-wrap: nowrap; } /* render the legend inside the box, not on its border */
.q-title { flex: 1 1 auto; min-width: 0; }
.q legend + *, .q > .opts { clear: both; }
.q-hint-empty { margin: 0 0 10px; }
.q-num { width: 34px; height: 34px; border-radius: 10px; display: inline-grid; place-items: center; background: var(--accent-soft); color: var(--accent-text); font: 700 16px var(--font-head); flex: none; }
.q.is-answered .q-num { background: var(--ok); color: #fff; }
.q-hint { color: var(--muted); font-size: 15px; margin: 4px 0 14px 46px; }
.opts { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(210px, 100%), 1fr)); gap: 10px; }
.opt { position: relative; display: flex; align-items: flex-start; gap: 10px; padding: 14px 40px 14px 16px; border: 1.5px solid var(--line-strong); border-radius: 14px; background: var(--surface); cursor: pointer; min-height: 64px; transition: border-color .12s, background-color .12s; }
.opt:hover { border-color: var(--accent); }
.opt input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.opt-body { display: flex; flex-direction: column; gap: 2px; }
.opt-label { font-weight: 600; font-size: 16px; line-height: 1.3; }
.opt-sub { font-size: 14px; color: var(--muted); line-height: 1.35; }
.opt-tick { position: absolute; right: 12px; top: 14px; width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--line-strong); display: grid; place-items: center; color: transparent; }
.opts-multi .opt-tick { border-radius: 6px; }
.opt-tick .ic { width: 14px; height: 14px; stroke-width: 3; }
.opt:has(input:checked) { border: 2px solid var(--accent); background: var(--accent-soft); padding: 13px 39px 13px 15px; }
.opt:has(input:checked) .opt-tick { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.opt:has(input:focus-visible) { outline: 3px solid var(--accent); outline-offset: 2px; }
.opt.is-disabled { opacity: .5; }
.q-text input[type="search"] { width: 100%; min-height: 52px; padding: 12px 16px; border: 1.5px solid var(--line-strong); border-radius: 14px; font: 16px var(--font); background: var(--surface-2); color: var(--ink); }
.q-text input[type="search"]:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.q-text .q-hint { margin-left: 46px; }
.suggest { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.form-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.js .form-actions .btn-primary { display: none; }
@media (max-width: 1040px) { .js .form-actions .btn-primary { display: inline-flex; } }
.results { position: sticky; top: 88px; max-height: calc(100vh - 104px); overflow: auto; padding: 22px; background: var(--surface); border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow); overscroll-behavior: contain; }
@media (max-width: 1040px) { .results { position: static; max-height: none; overflow: visible; } }
.results-title { font-size: 26px; margin-bottom: 14px; }
.results-empty { text-align: center; padding: 36px 12px; color: var(--muted); display: flex; flex-direction: column; align-items: center; gap: 10px; }
.results-empty .ic { width: 36px; height: 36px; color: var(--accent); }
.r-section { margin-bottom: 28px; }
.r-section > h3 { font-size: 19px; margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.r-section > h3 .ic { color: var(--accent); }
.r-section > p.muted { font-size: 15px; margin-bottom: 12px; }
.r-section .grid { grid-template-columns: 1fr; gap: 12px; }
.r-section .pcard, .r-section .mcard { padding: 18px; gap: 10px; }
.r-section .card-title { font-size: 19px; }
.r-summary { background: var(--surface-2); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; margin-bottom: 20px; font-size: 15px; color: var(--muted); }
.r-summary strong { color: var(--ink); }
.r-fallback { padding: 18px; border-radius: 16px; background: var(--warn-bg); border: 1px solid var(--warn-line); margin-bottom: 22px; }
.r-fallback p { margin-bottom: 8px; }
.r-fallback .btn { margin: 6px 8px 0 0; min-height: 44px; padding: 10px 16px; font-size: 15px; }
.r-links { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.r-links li { display: flex; flex-direction: column; gap: 2px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.r-links a { font-weight: 600; }
.r-links span { font-size: 14px; color: var(--muted); }

/* ---------- Library ---------- */
.start-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr)); gap: 16px; margin-top: 14px; }
.start-grid .res { padding: 10px 0; border: 0; border-top: 1px solid var(--line); border-radius: 0; background: none; }
.lib-list { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.lib-list .res { padding: 14px 16px; }
.lib-list .res-title { font-size: 17px; }
.lib-more { text-align: center; margin: 22px 0 8px; }
.badge-open { background: var(--ok-soft); color: var(--ok); border-color: var(--ok-line); }
.badge-closed { color: var(--subtle); }

/* ---------- Search ---------- */
.big-search { display: flex; flex-wrap: wrap; gap: 12px; margin-block: 32px 22px; }
.big-search .search-box { flex: 1 1 320px; }
#search-results > .count { margin-bottom: 20px; }
.s-group { margin-bottom: 30px; }
.s-group h2 { font-size: 20px; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.s-hit { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
.s-hit + .s-hit { margin-top: 8px; }
.s-hit a { font-weight: 600; font-size: 17px; }
.s-hit p { font-size: 15px; color: var(--muted); margin: 0; }
.s-hit .card-top { margin-bottom: 2px; }
mark { background: var(--warm); color: #15171C; border-radius: 3px; padding: 0 2px; }

/* ---------- Next steps ladder ---------- */
.steps-ladder { display: flex; flex-direction: column; gap: 18px; padding-block: 36px 72px; }
.ladder { display: flex; gap: 20px; padding: 26px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.ladder-num { flex: none; width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; background: var(--accent); color: var(--accent-ink); font: 700 22px var(--font-head); }
.ladder > div { flex: 1; min-width: 0; }
.ladder h2 { font-size: 24px; margin-bottom: 8px; }
.ladder > div > p { color: var(--muted); margin-bottom: 14px; }
.ladder .res-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); gap: 10px; }
@media (max-width: 640px) { .ladder { flex-direction: column; padding: 20px; } }

/* ---------- Glossary & prose ---------- */
.glossary { margin: 0; padding-block: 32px 72px; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(460px, 100%), 1fr)); gap: 14px; }
.g-item { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; scroll-margin-top: 96px; }
.g-item:target { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.g-item dt { font: 700 19px var(--font-head); margin-bottom: 6px; }
.g-item dd { margin: 0; color: var(--muted); }
.g-used { font-size: 14px; margin-top: 8px; }
.prose { max-width: 780px; padding-block: 36px 80px; }
.prose h2 { font-size: 26px; margin: 36px 0 12px; }
.prose p, .prose li { color: var(--muted); font-size: 17px; }
.prose ul { padding-left: 1.2em; display: flex; flex-direction: column; gap: 8px; margin-bottom: 1em; }
.prose strong { color: var(--ink); }

/* ---------- Footer ---------- */
.site-footer { background: var(--surface); margin-top: 24px; }
.notfound-art { width: 240px; height: 120px; margin: 36px 0 12px; border-radius: 4px; overflow: hidden; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 2fr); gap: 36px; padding-block: 44px 24px; }
.foot-about p { color: var(--muted); font-size: 15px; margin-top: 12px; }
.foot-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.foot-nav h2 { font: 700 13px var(--font); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 10px; }
.foot-nav ul { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.foot-nav a { color: var(--ink); text-decoration: none; font-size: 15px; display: inline-flex; align-items: center; min-height: 34px; }
.foot-nav a:hover { color: var(--accent); text-decoration: underline; }
.foot-note { border-top: 1px solid var(--line); padding-block: 18px 28px; }
.foot-note p { font-size: 13px; color: var(--subtle); }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr; } .foot-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ---------- Small screens ---------- */
@media (max-width: 640px) {
  body { font-size: 16.5px; }
  .wrap { padding-inline: 16px; }
  .section { padding-block: 52px 4px; }
  .band { padding-block: 52px; }
  .dark-panel { padding: 30px 22px; }
  .q { padding: 18px 16px; }
  .q-hint, .q-text .q-hint { margin-left: 0; }
  .step { padding: 18px 16px; gap: 12px; }
  .pcard, .mcard { padding: 18px; }
  .page-head { padding-block: 40px 22px; }
}

/* ---------- Home FAQ ---------- */
.faq { display: grid; gap: 12px; max-width: 860px; }
.faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 22px; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; flex: none; font: 600 22px/1 var(--font); color: var(--accent); }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 14px; }
.faq-item h3 { font-size: 18px; margin: 0; }
.faq-item p { margin: 0; padding: 0 22px 20px; color: var(--muted); max-width: 72ch; }

/* ---------- Search notes ---------- */
.s-note { margin: 0 0 6px; padding: 10px 14px; border-radius: 12px; background: var(--info-bg); border: 1px solid var(--info-line); }
.s-also { color: var(--subtle); font-weight: 400; }

/* ---------- Hero search ---------- */
.hero-search { width: 100%; max-width: 620px; display: flex; flex-direction: column; gap: 10px; }
.hero-search .big-search { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 0; }
.hero-search .search-box { background: var(--surface); box-shadow: var(--shadow); border-color: var(--accent); }
.hero-try { margin: 0; font-size: 15px; color: var(--muted); }
#main { min-height: 70vh; }
@media (max-width: 760px) { .bg-art { --art: .22; } .bg-lineage { --art: .26; } }

/* ---------- Page backgrounds (patterns come from scripts/lib/backgrounds.mjs) ---------- */
.bg-art { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; --a1: var(--mz-1); --a2: var(--mz-2); --a3: var(--mz-3); --dx: 1.2%; --dy: -.8%; --art: .26; }
:root[data-theme="dark"] .bg-art { --art: .3; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .bg-art { --art: .3; } }
/* Keeps the reading column calm: full strength only in the side margins. */
.bg-art::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent max(0px, calc(50% - 780px)), color-mix(in srgb, var(--bg) 78%, transparent) calc(50% - 480px), color-mix(in srgb, var(--bg) 78%, transparent) calc(50% + 480px), transparent min(100%, calc(50% + 780px))); }
.bg-move { position: absolute; inset: -5%; opacity: var(--art); }
.bg-l { position: absolute; inset: 0; width: 100%; height: 100%; }
.bg-l .a1 { fill: var(--a1); } .bg-l .a2 { fill: var(--a2); } .bg-l .a3 { fill: var(--a3); }
/* steps() means only a few updates a second: too small to see, and easy on batteries. */
@keyframes bg-breathe { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
@keyframes bg-drift { to { transform: translate3d(var(--dx), var(--dy), 0); } }
@keyframes bg-scroll { to { transform: translate3d(0, -3%, 0); } }
.bg-l1 { animation: bg-breathe 32s steps(128) infinite, bg-drift 80s steps(320) infinite alternate; }
.bg-l2 { animation: bg-breathe 41s steps(164) -14s infinite, bg-drift 96s steps(384) -30s infinite alternate-reverse; }
.bg-l3 { animation: bg-breathe 37s steps(148) -26s infinite, bg-drift 72s steps(288) -12s infinite alternate; }
@supports (animation-timeline: scroll()) { .bg-move { animation: bg-scroll linear both; animation-timeline: scroll(root block); } }

/* Colour and direction follow the page's purpose. */
.bg-converge { --a1: var(--mz-3); --a2: var(--mz-1); --a3: var(--mz-2); --dx: -.8%; --dy: .8%; }
.bg-grid { --dx: .8%; --dy: .8%; }
.bg-lineage { --a1: var(--mz-3); --a2: var(--mz-1); --a3: var(--mz-2); --art: .34; --dx: 1.4%; --dy: 0%; }
.bg-planes { --a1: var(--mz-1); --a2: var(--mz-3); --a3: var(--mz-2); --dx: .5%; --dy: .5%; }
.bg-shelves { --a1: var(--mz-2); --a2: var(--mz-1); --a3: var(--mz-3); --dx: 1%; --dy: 0%; }
.bg-lattice { --a1: var(--mz-1); --a2: var(--mz-3); --dx: .5%; --dy: -.5%; }
.bg-ascend { --a1: var(--mz-3); --a3: var(--mz-1); --dx: 1.6%; --dy: -1.4%; }
.bg-woven { --a1: var(--mz-1); --a2: var(--mz-2); --dx: 0%; --dy: .8%; }
.bg-setup { --a1: var(--mz-1); --a2: var(--mz-2); --a3: var(--mz-3); --dx: .5%; --dy: 0%; }
.bg-missing { --a1: var(--mz-1); --a2: var(--mz-2); --dx: 0%; --dy: 0%; }
.bg-technical { --a1: var(--t-technical); --a2: var(--mz-1); --a3: var(--mz-3); --dx: 0%; --dy: -1%; }
.bg-biosecurity { --a1: var(--t-biosecurity); --a2: var(--mz-3); --a3: var(--mz-1); --dx: .8%; --dy: 0%; }
.bg-governance { --a1: var(--t-governance); --a2: var(--mz-2); --dx: 1%; --dy: -1%; }
.bg-policy { --a1: var(--t-policy); --a2: var(--mz-2); --a3: var(--t-philosophy); --dx: 0%; --dy: -1.2%; }
.bg-philosophy { --a1: var(--t-philosophy); --a2: var(--mz-2); --a3: var(--mz-4); --dx: .6%; --dy: .6%; }

/* Let the pattern show faintly through the full-width bands. */
@supports (background: color-mix(in srgb, red 50%, transparent)) {
  .page-head, .band-white { background: color-mix(in srgb, var(--surface) 70%, transparent); }
  .theme-hero { background: color-mix(in srgb, var(--th-bg) 76%, transparent); }
}
@media (forced-colors: active) { .bg-art { display: none; } }

/* ---------- Motion & print ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  .bg-art, .site-header, .site-footer, .hero-art, .hero-strip, .theme-art, .filters, .head-actions, .step-check, .fallback-band, .header-tools { display: none !important; }
  body { background: #fff; color: #000; }
  .card, .step, .side-box { box-shadow: none; break-inside: avoid; }
  .project-layout { grid-template-columns: 1fr; }
}