/* ============================================================
   twentii.ai — public site styles
   Every value traces to tokens/*.css. Site-scope extensions are
   aliases/compositions only — documented in rationale.html.
   ============================================================ */

/* ---- Extensions (aliases only, no new values) ---- */
:root {
  /* daylight surface — signal deepens for contrast on ink-50 */
  --signal: var(--machine-700);
  --signal-strong: var(--machine-600);
  --signal-dim: color-mix(in srgb, var(--machine-600) 16%, transparent);
  --focus-ring: var(--machine-600);
  --err-text: var(--error);
  --nav-glass: var(--glass-light);
  --btn-signal-text: var(--white);
  --dim-ink: var(--ink-300);            /* oversized quiet numerals */
  --asm-faint: var(--ink-200);
  --asm-mid: var(--ink-400);
  --asm-fig: var(--ink-950);
  --asm-rule: var(--ink-100);
}
[data-theme="dark"] {
  /* asphalt surface — the original signal pairing */
  --signal: var(--machine-400);          /* 7.73:1 on ink-950 */
  --signal-strong: var(--machine-300);
  --signal-dim: color-mix(in srgb, var(--machine-400) 14%, transparent);
  --focus-ring: var(--machine-400);      /* one signal color per surface */
  --err-text: color-mix(in srgb, var(--error) 70%, var(--white));
  --nav-glass: var(--glass-dark);
  --btn-signal-text: var(--ink-950);
  --dim-ink: var(--ink-600);
  --asm-faint: var(--ink-600);
  --asm-mid: var(--ink-400);
  --asm-fig: var(--white);
  --asm-rule: var(--ink-800);
}

html { scroll-padding-top: 88px; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  background: var(--bg-page);
  overflow-x: hidden;
}

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

.skip-link {
  position: absolute; left: var(--space-4); top: var(--space-4);
  z-index: 100; padding: var(--space-3) var(--space-4);
  background: var(--ink-900); color: var(--text-primary);
  border: 1px solid var(--border-default); border-radius: var(--r-sm);
  transform: translateY(-200%);
}
.skip-link:focus-visible { transform: none; }

.container {
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-8));
}

::selection { background: var(--machine-100); color: var(--ink-950); }

/* ============================================================
   WORDMARK — twent + the two-dot ii (never one color)
   ============================================================ */
.wordmark {
  display: inline-flex; align-items: flex-end;
  color: var(--text-primary); text-decoration: none;
  line-height: 1;
}
.wordmark:hover { color: var(--text-primary); }
.wm-t {
  font-family: var(--font-display); font-weight: var(--fw-semibold);
  font-size: 22px; line-height: 1; letter-spacing: -0.02em;
}
.wm-ii { display: inline-flex; gap: 2.5px; margin: 0 0 1px 2px; }
.wm-i { display: inline-flex; flex-direction: column; align-items: center; gap: 2px; }
.wm-i::before {
  content: ""; width: 3.5px; height: 3.5px; border-radius: 1px;
  background: var(--mind-500);
}
.wm-i.machine::before { background: var(--machine-500); }
.wm-i::after {
  content: ""; width: 3px; height: 11px; border-radius: 1.5px;
  background: currentColor;
}

/* Inline wordmark ii, em-scaled — used inside the hero sentence.
   The device is one inline-block sized to the glyph and baseline-nudged,
   so the stems sit on the text baseline (not hanging below it). */
.wm-inline { white-space: nowrap; }
.wm-inline .wm-ii {
  /* zero-height inline-block: its baseline IS its bottom edge, so the
     absolutely-positioned stems sit exactly on the text baseline */
  display: inline-block; position: relative;
  width: 0.31em; height: 0; margin-left: 0.05em;
  vertical-align: baseline;
}
.wm-inline .wm-i {
  position: absolute; bottom: 0; left: 0;
  display: flex; flex-direction: column; align-items: center; gap: 0.075em;
}
.wm-inline .wm-i.machine { left: 0.17em; }
.wm-inline .wm-i::before { width: 0.115em; height: 0.115em; border-radius: 0.03em; }
.wm-inline .wm-i::after { width: 0.1em; height: 0.5em; border-radius: 0.05em; }

/* Divisional lockup */
.lockup { display: inline-flex; align-items: center; gap: var(--space-4); }
.lockup .lockup-rule { width: 1px; height: 26px; background: var(--border-default); }
.lockup .lockup-div {
  font-family: var(--font-mono); font-weight: var(--fw-medium);
  font-size: var(--fs-overline); letter-spacing: var(--tr-overline);
  text-transform: uppercase; color: var(--text-muted);
}

/* ============================================================
   NAV
   ============================================================ */
.site-nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: var(--nav-glass);
  -webkit-backdrop-filter: var(--blur-glass); backdrop-filter: var(--blur-glass);
  border-bottom: 1px solid var(--border-subtle);
}
.site-nav .nav-row {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: var(--space-5);
}
.nav-links { display: flex; align-items: center; gap: clamp(var(--space-4), 3vw, var(--space-6)); list-style: none; margin: 0; padding: 0; }
.nav-links a { font-size: var(--fs-body-sm); }
.nav-mail { font-family: var(--font-mono); font-size: var(--fs-caption); }
@media (max-width: 700px) { .nav-mail { display: none; } }

/* Links — underline draws in */
.link {
  color: var(--text-body); text-decoration: none; padding-bottom: 2px;
  background: linear-gradient(currentColor, currentColor) no-repeat left bottom / 0% 1px;
  transition: background-size var(--dur-2) var(--ease-standard),
              color var(--dur-2) var(--ease-standard);
}
.link:hover, .link:focus-visible { color: var(--text-primary); background-size: 100% 1px; }
.link[aria-current="page"] { color: var(--signal); }
.link-signal { color: var(--signal); }
.link-signal:hover, .link-signal:focus-visible { color: var(--signal-strong); }

/* ============================================================
   BUTTONS — hover darkens/brightens, press nudges (mechanical)
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  height: var(--control-h-lg); padding: 0 var(--space-6);
  font-family: var(--font-text); font-weight: var(--fw-semibold); font-size: var(--fs-body);
  border: 1px solid transparent; border-radius: var(--r-sm); cursor: pointer;
  text-decoration: none; white-space: nowrap;
  transition: background var(--dur-1) var(--ease-standard),
              border-color var(--dur-1) var(--ease-standard),
              transform var(--dur-1) var(--ease-standard);
}
.btn:active { transform: translateY(0.5px) scale(0.99); }
.btn-signal { background: var(--signal); color: var(--btn-signal-text); }
.btn-signal:hover { background: var(--signal-strong); color: var(--btn-signal-text); }
.btn-ghost { background: transparent; color: var(--text-primary); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--bg-surface-2); color: var(--text-primary); }

/* Two-pulse confirm — composed from system durations/easing only */
@keyframes two-pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--machine-400) 55%, transparent); }
  35%  { box-shadow: 0 0 0 9px color-mix(in srgb, var(--machine-400) 0%, transparent); }
  50%  { box-shadow: 0 0 0 0 color-mix(in srgb, var(--machine-400) 45%, transparent); }
  100% { box-shadow: 0 0 0 14px color-mix(in srgb, var(--machine-400) 0%, transparent); }
}
.two-pulse { animation: two-pulse calc(var(--dur-4) + var(--dur-3)) var(--ease-seam) 1; }

/* Two-dot loading state */
.dots { display: inline-flex; gap: var(--space-2); vertical-align: middle; }
.dots i {
  width: 6px; height: 6px; border-radius: 2px; background: currentColor;
  animation: dot-beat calc(var(--dur-4) * 2) var(--ease-seam) infinite;
}
.dots i + i { animation-delay: var(--dur-4); }
@keyframes dot-beat { 0%, 100% { opacity: 0.25; } 50% { opacity: 1; } }

/* Twin-dot marker — one memory dot, one signal dot */
.twin { display: inline-flex; gap: var(--space-1); align-items: center; }
.twin i { width: 5px; height: 5px; border-radius: 1.5px; background: var(--ink-300); }
.twin i + i { background: var(--signal); }

/* ============================================================
   SECTIONS
   ============================================================ */
.section { padding-block: clamp(var(--space-9), 14vh, var(--space-11)); }
.section + .section { border-top: 1px solid var(--border-subtle); }

.section-head { margin-bottom: clamp(var(--space-7), 6vh, var(--space-9)); }
.section-head .tw-overline { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-5); }

.h-display {
  font-family: var(--font-display); font-weight: var(--fw-semibold);
  font-size: clamp(var(--fs-h2), 4.6vw, var(--fs-display-2));
  line-height: var(--lh-display-2); letter-spacing: var(--tr-display-2);
  color: var(--text-primary); text-wrap: balance; margin: 0;
}
.prose { max-width: 62ch; }
.prose p { margin: 0 0 var(--space-5) 0; }
.prose p:last-child { margin-bottom: 0; }
.lead { font-size: var(--fs-body-lg); line-height: var(--lh-body-lg); color: var(--text-body); }
.prose .quiet { color: var(--text-muted); }

/* ============================================================
   HERO
   ============================================================ */
.hero { position: relative; min-height: 100svh; display: grid; align-items: center; overflow: hidden; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-inner { position: relative; padding-block: var(--space-10) var(--space-9); }
.hero-inner .tw-overline { margin-bottom: var(--space-6); }
.hero-title {
  font-family: var(--font-display); font-weight: var(--fw-bold);
  font-size: clamp(var(--fs-h1), 6.6vw, var(--fs-display-1));
  line-height: var(--lh-display-1); letter-spacing: var(--tr-display-1);
  color: var(--text-primary); max-width: 21ch; text-wrap: balance; margin: 0;
}
.hero-actions { margin-top: clamp(var(--space-7), 5vh, var(--space-8)); }
.hero-cue {
  position: absolute; left: 50%; bottom: var(--space-6); transform: translateX(-50%);
  display: inline-flex; align-items: center; gap: var(--space-3);
  font-family: var(--font-mono); font-size: var(--fs-overline);
  letter-spacing: var(--tr-overline); text-transform: uppercase; color: var(--text-faint);
}
.hero-cue .twin i { background: var(--ink-500); }
.hero-cue .twin i + i { background: var(--signal); }

/* ============================================================
   01 · PROBLEM — the year span
   ============================================================ */
.year-wrap {
  margin-top: clamp(var(--space-8), 8vh, var(--space-10));
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.is-static .year-wrap { overflow-x: auto; }
.year-strip {
  display: flex; gap: clamp(var(--space-6), 5vw, var(--space-8));
  width: max-content; will-change: transform;
  font-family: var(--font-mono); font-weight: var(--fw-medium);
  font-variant-numeric: tabular-nums;
  font-size: clamp(var(--fs-h2), 7.5vw, var(--fs-display-1));
  line-height: var(--lh-display-1);
  color: var(--dim-ink);
  list-style: none; margin: 0; padding: 0;
}
.year-strip li:first-child, .year-strip li:last-child { color: var(--text-primary); }
.year-caption { margin-top: var(--space-6); color: var(--text-faint); }

/* ============================================================
   02 · METHOD — paired rows on the seam
   ============================================================ */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: clamp(var(--space-7), 6vh, var(--space-8)); }
.step { border-top: 1px solid var(--border-subtle); padding-top: var(--space-6); }
.step-head { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-5); }
.step-pair { align-items: start; }
.step-claim h3 {
  font-family: var(--font-display); font-weight: var(--fw-medium);
  font-size: var(--fs-h3); line-height: var(--lh-h3); letter-spacing: var(--tr-h3);
  margin: 0 0 var(--space-3) 0;
}
.step-claim p { color: var(--text-body); max-width: 46ch; }
.step-fact {
  background: var(--bg-surface); border: 1px solid var(--border-subtle);
  border-radius: var(--r-md); padding: var(--space-5);
}
.step-fact dl { margin: 0; display: grid; gap: var(--space-3); }
.step-fact div { display: grid; grid-template-columns: 96px 1fr; gap: var(--space-4); align-items: baseline; }
.step-fact div + div { border-top: 1px solid var(--border-subtle); padding-top: var(--space-3); }
.step-fact dt {
  font-family: var(--font-mono); font-size: var(--fs-overline);
  letter-spacing: var(--tr-overline); text-transform: uppercase; color: var(--text-faint);
}
.step-fact dd { margin: 0; font-family: var(--font-mono); font-size: var(--fs-mono); line-height: var(--lh-mono); color: var(--text-muted); }
.method-more { margin-top: var(--space-7); }

@media (max-width: 820px) {
  .tw-duality { grid-template-columns: 1fr; }
  .tw-duality--seam::before { content: none; }
}

/* ============================================================
   03 · FIRST VERTICAL
   ============================================================ */
.vertical-head { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-5); margin-bottom: var(--space-6); }
.horizon {
  margin-top: clamp(var(--space-7), 6vh, var(--space-8));
  font-family: var(--font-mono); font-size: var(--fs-overline);
  letter-spacing: var(--tr-overline); text-transform: uppercase;
  color: var(--text-faint);
}
.horizon span { color: var(--dim-ink); }

/* ============================================================
   04 · THE ASSEMBLY
   ============================================================ */
.assembly-track { height: 340vh; }
.assembly-track.is-static { height: auto; }
@media (max-width: 640px) { .assembly-track { height: 260vh; } .assembly-track.is-static { height: auto; } }

.assembly-sticky {
  position: sticky; top: 0; height: 100svh; overflow: hidden;
  display: flex; flex-direction: column;
}
.assembly-track.is-static .assembly-sticky { position: relative; height: 100svh; min-height: 560px; }

.assembly-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.assembly-head { position: relative; padding-top: calc(64px + var(--space-7)); pointer-events: none; }
.assembly-head .tw-overline {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-5);
}
.assembly-caption {
  margin-top: var(--space-4); display: inline-flex; align-items: center; gap: var(--space-3);
  color: var(--text-faint);
}

.fig-overlay { position: absolute; inset: 0; pointer-events: none; }
.fig-label {
  position: absolute; transform: translateX(-50%);
  display: grid; gap: var(--space-1); justify-items: center; text-align: center;
  opacity: 0; transition: opacity var(--dur-3) var(--ease-standard);
}
.fig-label.show { opacity: 1; }
.fig-label .t-overline { color: var(--text-muted); }
.fig-label .fig-note { font-family: var(--font-mono); font-size: var(--fs-caption); color: var(--text-faint); text-transform: none; letter-spacing: 0.02em; }

/* ============================================================
   05 · CONTACT
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(var(--space-6), 5vw, var(--space-9)); align-items: start; }
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } }

.form { display: grid; gap: var(--space-5); max-width: 560px; }
.field { display: grid; gap: var(--space-2); }
.field label { font-size: var(--fs-body-sm); font-weight: var(--fw-medium); color: var(--text-body); }
.field input {
  height: var(--control-h-lg); padding: 0 var(--space-4);
  font-family: var(--font-text); font-size: var(--fs-body);
  color: var(--text-primary); background: var(--bg-surface);
  border: 1px solid var(--border-default); border-radius: var(--r-sm);
  transition: border-color var(--dur-1) var(--ease-standard), box-shadow var(--dur-1) var(--ease-standard);
}
.field input::placeholder { color: var(--text-faint); }
.field input:focus { outline: none; border-color: var(--signal); box-shadow: 0 0 0 3px var(--signal-dim); }
.field input[aria-invalid="true"] { border-color: var(--err-text); }
.field .field-error { font-size: var(--fs-body-sm); color: var(--err-text); margin: 0; }
.form-note { font-family: var(--font-mono); font-size: var(--fs-caption); color: var(--text-faint); }
.form-success {
  display: none; align-items: center; gap: var(--space-3);
  padding: var(--space-5); border: 1px solid var(--border-default);
  border-radius: var(--r-md); background: var(--bg-surface); color: var(--text-primary);
}
.form.is-done .form-success { display: flex; }
.form.is-done .form-fields { display: none; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { border-top: 1px solid var(--border-subtle); padding-block: var(--space-7); }
.footer-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-5); }
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-5); list-style: none; margin: 0; padding: 0; }
.footer-links a { font-size: var(--fs-body-sm); color: var(--text-muted); }
.footer-mono { font-family: var(--font-mono); font-size: var(--fs-caption); color: var(--text-faint); }

/* ============================================================
   SUBPAGES
   ============================================================ */
.page-head { padding-top: calc(64px + clamp(var(--space-8), 10vh, var(--space-10))); padding-bottom: clamp(var(--space-7), 6vh, var(--space-9)); }
.page-head .tw-overline {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-5);
}
.page-head h1 {
  font-family: var(--font-display); font-weight: var(--fw-semibold);
  font-size: clamp(var(--fs-h1), 5.4vw, var(--fs-display-2));
  line-height: var(--lh-display-2); letter-spacing: var(--tr-display-2);
  max-width: 24ch; text-wrap: balance;
}
.subsection { padding-block: clamp(var(--space-7), 7vh, var(--space-9)); border-top: 1px solid var(--border-subtle); }
.subsection h2 {
  font-family: var(--font-display); font-weight: var(--fw-medium);
  font-size: var(--fs-h3); line-height: var(--lh-h3); letter-spacing: var(--tr-h3);
  margin-bottom: var(--space-4);
}
.mono-list { list-style: none; margin: var(--space-5) 0 0 0; padding: 0; display: grid; gap: var(--space-3); max-width: 62ch; }
.mono-list li {
  display: grid; grid-template-columns: 16px 1fr; gap: var(--space-4); align-items: baseline;
  font-family: var(--font-mono); font-size: var(--fs-mono); line-height: var(--lh-mono); color: var(--text-muted);
  border-top: 1px solid var(--border-subtle); padding-top: var(--space-3);
}
.mono-list li::before { content: ""; width: 5px; height: 5px; border-radius: 1.5px; background: var(--signal); position: relative; top: -2px; }

.principles { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-6); counter-reset: pr; }
.principles li { border-top: 1px solid var(--border-subtle); padding-top: var(--space-5); display: grid; gap: var(--space-2); }
.principles .pr-no { font-family: var(--font-mono); font-size: var(--fs-overline); letter-spacing: var(--tr-overline); color: var(--text-faint); }
.principles h3 { font-family: var(--font-display); font-weight: var(--fw-medium); font-size: var(--fs-h3); letter-spacing: var(--tr-h3); }
.principles p { color: var(--text-body); max-width: 52ch; }

/* Rationale note */
.rationale-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gutter); margin-block: var(--space-7); }
@media (max-width: 900px) { .rationale-grid { grid-template-columns: 1fr; } }
.rationale-card {
  background: var(--bg-surface); border: 1px solid var(--border-subtle);
  border-radius: var(--r-md); padding: var(--space-5); display: grid; gap: var(--space-3);
  align-content: start;
}
.rationale-card h3 { font-family: var(--font-display); font-weight: var(--fw-medium); font-size: var(--fs-h4); }
.rationale-card p { font-size: var(--fs-body-sm); color: var(--text-muted); }
.rationale-card .defense { font-family: var(--font-mono); font-size: var(--fs-caption); color: var(--signal); }


/* ============================================================
   THEME TOGGLE — two surfaces, one switch
   ============================================================ */
.theme-toggle {
  display: inline-flex; align-items: center; gap: var(--space-2);
  height: 28px; padding: 0 var(--space-3);
  background: transparent; border: 1px solid var(--border-default);
  border-radius: var(--r-full); cursor: pointer;
  font-family: var(--font-mono); font-size: var(--fs-caption);
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted);
  transition: color var(--dur-1) var(--ease-standard),
              border-color var(--dur-1) var(--ease-standard);
}
.theme-toggle:hover { color: var(--text-primary); border-color: var(--border-strong); }
.theme-toggle .tt-dot { width: 7px; height: 7px; border-radius: 2px; background: var(--signal); }

/* ============================================================
   REVEAL — sections arrive like records: settle, don't swarm
   ============================================================ */
.reveal {
  opacity: 0; transform: translateY(14px);
  transition: opacity var(--dur-4) var(--ease-standard),
              transform var(--dur-4) var(--ease-standard);
  transition-delay: var(--rd, 0ms);
}
.reveal.in { opacity: 1; transform: none; }
.is-static .reveal, .no-reveal .reveal { opacity: 1; transform: none; transition: none; }


/* ============================================================
   QA MODE (?asm=) — isolate the Assembly for deterministic capture
   ============================================================ */
.asm-qa .hero, .asm-qa #problem, .asm-qa #method, .asm-qa #auto,
.asm-qa #contact, .asm-qa .site-footer { display: none; }
.asm-qa #assembly { border-top: none; }
.asm-qa .assembly-track { height: 100svh; }


/* ============================================================
   LEAK BOARD — six leaking lines seal into ledger hairlines.
   The Assembly's grammar (loose -> structured), lever-sized.
   Driven by --seal (0..1) per row from site.js.
   ============================================================ */
.leak-board { margin-top: clamp(var(--space-7), 6vh, var(--space-8)); max-width: 860px; }
.leak-row {
  display: grid; grid-template-columns: 168px 1fr 72px;
  gap: var(--space-5); align-items: center;
  padding-block: var(--space-3);
}
.leak-row + .leak-row { border-top: 1px solid var(--border-subtle); }
.leak-label {
  font-family: var(--font-mono); font-size: var(--fs-overline);
  letter-spacing: var(--tr-overline); text-transform: uppercase;
  color: var(--text-muted); white-space: nowrap;
}
.leak-line { position: relative; height: 12px; --seal: 0; }
/* the leak: two misaligned amber dash tracks */
.leak-line::before {
  content: ""; position: absolute; inset: 0;
  background:
    repeating-linear-gradient(90deg, var(--signal) 0 5px, transparent 5px 14px) 0 3px / 100% 2px no-repeat,
    repeating-linear-gradient(90deg, var(--signal) 0 4px, transparent 4px 17px) 7px 8px / 100% 2px no-repeat;
  opacity: calc(0.85 * (1 - var(--seal)));
}
/* the seal: one clean ledger hairline drawing in */
.leak-line::after {
  content: ""; position: absolute; left: 0; top: 5px; height: 1.5px;
  width: calc(var(--seal) * 100%);
  background: var(--border-strong);
}
/* the frontier: a signal dot riding the seal edge */
.leak-head {
  position: absolute; top: 3px; left: calc(var(--seal) * 100%);
  width: 6px; height: 6px; border-radius: 2px; background: var(--signal);
  transform: translateX(-3px);
  opacity: 0;
}
.leak-row.sealing .leak-head { opacity: 1; }
.leak-state {
  font-family: var(--font-mono); font-size: var(--fs-overline);
  letter-spacing: var(--tr-overline); text-transform: uppercase;
  color: var(--signal); text-align: right; transition: color var(--dur-2) var(--ease-standard);
}
.leak-row.sealed .leak-state { color: var(--text-faint); }
.leak-caption { margin-top: var(--space-5); color: var(--text-faint); }
@media (max-width: 640px) {
  .leak-row { grid-template-columns: 1fr 88px; }
  .leak-label { grid-column: 1 / -1; padding-bottom: 2px; }
}


/* ============================================================
   SMALL SCREENS — the nav must never set the page's width
   ============================================================ */
@media (max-width: 700px) {
  .site-nav .nav-row { gap: var(--space-3); }
  .nav-links { gap: var(--space-3); }
  .nav-links a { font-size: var(--fs-caption); }
  .theme-toggle { padding: 0 9px; }
  .theme-toggle .tt-label { display: none; }
}
@media (max-width: 640px) {
  .hero-title { font-size: clamp(var(--fs-h2), 8.6vw, var(--fs-h1)); }
  .h-display { font-size: clamp(var(--fs-h3), 7.4vw, var(--fs-h2)); }
}
.nav-links li { min-width: 0; }
.site-nav .nav-row { min-width: 0; flex-wrap: nowrap; }