/* Hallmark · pre-emit critique: P5 H5 E4 S5 R4 V5 */
/* Hallmark · genre: modern-minimal · macrostructure: Workbench · design-system: design.md · designed-as-app
 * theme: custom · vibe: "criterion instrument, exam paper, red pen"
 * paper: oklch(97% 0.010 250) · accent: oklch(55% 0.19 255)
 * display: Noto Serif TC · body: IBM Plex Sans · axes: light / roman-serif / cool
 * enrichment: E1 pure-CSS annotated workspace · nav: N10 · footer: Ft5 · contrast: pass (40–41) · slop: pass (42–45)
 * honest: pass (46) · chrome: pass (47) · tokens: pass (48) · responsive: pass (49) · mobile: pass (34, 49, 50–57)
 */
@import "tokens.css";

:root {
  --ac: var(--color-accent);
  --ac-d: var(--color-accent-dark);
  --ac-t: var(--color-accent-soft);
  --ac-t2: var(--color-rule-2);
  --ink: var(--color-ink);
  --soft: var(--color-neutral);
  --faint: var(--color-muted);
  --line: var(--color-rule-2);
  --bg: var(--color-paper);
  --surface: var(--color-paper);
  --surface-2: var(--color-paper-2);
  --or: var(--color-mark);
  --or-t: var(--color-mark-soft);
  --ok: var(--color-success);
  --ok-t: var(--color-success-soft);
  --no: var(--color-error);
  --no-t: var(--color-error-soft);
  --warn: var(--color-warning);
  --warn-t: var(--color-warning-soft);
  --warn-bd: var(--color-warning);
  --info: var(--color-reading);
  --info-t: var(--color-reading-soft);
  --info-bd: var(--color-reading);
  --disp: var(--font-display);
  --body: var(--font-body);
  --mono: var(--font-outlier);
  --radius: var(--radius-card);
  --radius-sm: var(--radius-input);
  --radius-btn: var(--radius-input);
  --shadow: var(--shadow-float);
  --shadow-sm: var(--shadow-card);
}

*, *::before, *::after { box-sizing: border-box; }

html,
body { overflow-x: clip; }

html { scroll-padding-top: var(--banner-height); }

body {
  background-color: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.62;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-base) - 1);
  pointer-events: none;
  content: "";
  background-image: repeating-linear-gradient(
    to bottom,
    color-mix(in oklch, var(--color-rule-2) 42%, transparent) 0,
    color-mix(in oklch, var(--color-rule-2) 42%, transparent) var(--rule-hair),
    transparent var(--rule-hair),
    transparent 2.75rem
  );
  mask-image: linear-gradient(to right, transparent, var(--color-ink) 15%, var(--color-ink) 85%, transparent);
  opacity: 0.34;
}

main,
footer,
.announce,
.nav { position: relative; z-index: var(--z-base); }

h1,
h2,
h3,
.h1,
.h2,
.card h3,
.plan-hd b,
.faq summary,
.final-box h2 {
  font-family: var(--font-display);
  font-style: normal;
  overflow-wrap: anywhere;
  min-width: 0;
}

a,
button,
summary,
.btn { white-space: nowrap; }

:focus-visible {
  outline: var(--rule-fine) solid var(--color-focus);
  outline-offset: var(--space-3xs);
  border-radius: var(--radius-input);
}

::selection {
  background: var(--color-mark-soft);
  color: var(--color-ink);
}

a:active { color: var(--color-accent-dark); }
a[aria-disabled="true"],
button:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
a[data-state="loading"],
button[data-state="loading"] { cursor: progress; }
a[data-state="error"],
button[data-state="error"] { border-color: var(--color-error); }
a[data-state="success"],
button[data-state="success"] { border-color: var(--color-success); }

.wrap,
.hero,
.trust,
.nav-in,
.foot-in {
  width: min(100%, var(--page-max));
  max-width: var(--page-max);
  padding-inline: var(--page-gutter);
}

/* Announcement becomes a document-control strip, not an ad banner. */
.announce {
  min-height: 2.25rem;
  padding: var(--space-2xs) var(--page-gutter);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-ink);
  color: var(--color-paper);
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

/* N10: one DOM, morphing from edge bar into a floating instrument rail. */
.nav {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky-nav);
  min-height: 4rem;
  padding-block: 0;
  background-color: color-mix(in oklch, var(--color-paper) 94%, transparent);
  border-block-end: var(--rule-hair) solid var(--color-rule-2);
  backdrop-filter: saturate(1.2) blur(0.875rem);
  transition:
    background-color var(--dur-mid) var(--ease-out),
    border-color var(--dur-mid) var(--ease-out),
    backdrop-filter var(--dur-mid) var(--ease-out);
}

.nav-in {
  min-height: 4rem;
  padding-block: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-sm);
  border: var(--rule-hair) solid transparent;
  border-radius: 0;
  background-color: transparent;
  box-shadow: none;
  transform: translateY(0);
  transition:
    transform var(--dur-mid) var(--ease-out),
    border-radius var(--dur-mid) var(--ease-out),
    border-color var(--dur-mid) var(--ease-out),
    background-color var(--dur-mid) var(--ease-out),
    box-shadow var(--dur-mid) var(--ease-out),
    backdrop-filter var(--dur-mid) var(--ease-out);
}

.nav.is-floating {
  padding-block: 0;
  background-color: transparent;
  border-block-end-color: transparent;
  backdrop-filter: blur(0);
}

.nav.is-floating .nav-in {
  min-height: 4rem;
  padding-inline: var(--space-sm);
  border-color: var(--color-rule-2);
  border-radius: var(--radius-pill);
  background-color: color-mix(in oklch, var(--color-paper) 90%, transparent);
  backdrop-filter: saturate(1.25) blur(1.125rem);
  box-shadow: var(--shadow-float);
  transform: translateY(var(--space-xs));
}

.brand { gap: var(--space-xs); }
.brand .mark { width: 2rem; height: 2rem; }
.brand b {
  color: var(--color-ink);
  font-family: var(--font-outlier);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: -0.035em;
}
.brand small {
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.nav-r { gap: var(--space-xs); flex-wrap: nowrap; }
.nav-links { display: none; }
.nav-a {
  position: relative;
  min-height: 2.75rem;
  padding-inline: var(--space-xs);
  display: inline-flex;
  align-items: center;
  border-radius: 0;
  color: var(--color-neutral);
  font-size: var(--text-sm);
  font-weight: 600;
}
.nav-a::after {
  position: absolute;
  inset: auto var(--space-xs) 0;
  height: var(--rule-fine);
  content: "";
  background: var(--color-accent);
  opacity: 0;
  transform: scaleX(0.25);
  transform-origin: left;
  transition: opacity var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out);
}
.nav-a:hover,
.nav-a:focus-visible { color: var(--color-ink); background: transparent; }
.nav-a:hover::after,
.nav-a:focus-visible::after { opacity: 1; transform: scaleX(1); }

.langseg,
.foot-lang {
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: var(--radius-input);
  background: transparent;
}
.langseg a,
.langseg span { border-radius: calc(var(--radius-input) - var(--rule-hair)); }
.langseg .on { background: var(--color-paper-2); box-shadow: none; }

/* Buttons are compact instruments: ink for action, cobalt for state. */
.btn {
  min-height: 2.75rem;
  padding: var(--space-xs) var(--space-md);
  border: var(--rule-hair) solid var(--color-ink);
  border-radius: var(--radius-input);
  background: var(--color-ink);
  color: var(--color-paper);
  box-shadow: none;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}
.btn:hover { background: var(--color-accent); color: var(--color-accent-ink); box-shadow: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled,
.btn[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn.ghost,
.btn.white {
  border-color: var(--color-rule);
  background: var(--color-paper);
  color: var(--color-ink);
}
.btn.ghost:hover,
.btn.white:hover { border-color: var(--color-accent); background: var(--color-paper-2); color: var(--color-accent-dark); }
.btn.orange { border-color: var(--color-mark); background: transparent; color: var(--color-mark); }
.btn.orange:hover { background: var(--color-mark); color: var(--color-accent-ink); }
.btn.sm { min-height: 2.5rem; padding: var(--space-2xs) var(--space-sm); }
.btn.tag { border: 0; background: transparent; color: currentColor; padding: 0; min-height: auto; }
.btn[data-state="loading"] { cursor: progress; }
.btn[data-state="error"] { border-color: var(--color-error); background: var(--color-error); color: var(--color-accent-ink); }
.btn[data-state="success"] { border-color: var(--color-success); background: var(--color-success); color: var(--color-accent-ink); }

/* Hero: clipped workbench, annotated like a marked script. */
.hero {
  margin-inline: auto;
  padding-block: var(--space-xl) var(--space-2xl);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-xl);
  align-items: center;
}
.hero-grid > div { min-width: 0; }
.eyebrow {
  border-radius: 0;
  background: transparent;
  color: var(--color-accent-dark);
}
.eyebrow.big {
  margin-block-end: var(--space-sm);
  padding: var(--space-2xs) 0;
  border-block: var(--rule-hair) solid var(--color-rule);
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.eyebrow::before { border-radius: 0; }
.h1 {
  max-width: 9ch;
  margin: 0;
  color: var(--color-ink);
  font-size: var(--text-display);
  font-weight: var(--display-weight);
  line-height: 0.98;
  letter-spacing: var(--tracking-display);
  text-wrap: pretty;
}
.h1 .ac,
.h2 .ac { color: var(--color-ink); }
.h1 .ac {
  position: relative;
  display: inline-block;
}
.h1 .ac::after {
  position: absolute;
  inset: auto -0.06em calc(var(--rule-fine) * -1) -0.03em;
  height: var(--rule-fine);
  content: "";
  background: var(--color-mark);
  transform: rotate(-1.2deg) scaleX(0.96);
  transform-origin: left;
}
.hero-sub {
  max-width: 36rem;
  margin-block-start: var(--space-lg);
  color: var(--color-neutral);
  font-size: var(--text-md);
  line-height: 1.62;
}
.hero-cta { align-items: center; gap: var(--space-xs); margin-block-start: var(--space-lg); }
.hero-trust {
  max-width: 40rem;
  margin-block-start: var(--space-md);
  padding-block-start: var(--space-sm);
  border-block-start: var(--rule-hair) solid var(--color-rule-2);
  color: var(--color-neutral);
  font-family: var(--font-body);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
}

.hero-visual {
  position: relative;
  isolation: isolate;
  min-width: 0;
}
.hero-visual::before {
  position: absolute;
  inset: -1.75rem auto auto -0.75rem;
  z-index: var(--z-raised);
  padding: var(--space-2xs) var(--space-xs);
  content: "CRITERION TRACE / 01";
  background: var(--color-paper);
  border: var(--rule-hair) solid var(--color-mark);
  color: var(--color-mark);
  font-family: var(--font-body);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  transform: rotate(-2deg);
}
.hero-visual::after {
  position: absolute;
  inset: auto 6% -1.2rem auto;
  z-index: var(--z-raised);
  width: 34%;
  height: 1.5rem;
  content: "";
  border-block-start: var(--rule-fine) solid var(--color-mark);
  border-radius: 50%;
  transform: rotate(-4deg);
}
.mk,
.ev,
.rv {
  max-width: none;
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  background: var(--color-paper);
  box-shadow: var(--shadow-float);
}
.hero .mk {
  width: calc(100% + min(5rem, 10vw));
  margin: 0 !important;
  transform: rotate(0.7deg);
  animation: workspace-enter var(--dur-long) var(--ease-out) both;
}
@keyframes workspace-enter {
  from { opacity: 0; transform: translateY(var(--space-sm)) rotate(0.7deg); }
  to { opacity: 1; transform: translateY(0) rotate(0.7deg); }
}
.mk-hd,
.ev-hd {
  min-height: 3rem;
  background: var(--color-ink);
  color: var(--color-paper);
  border-color: var(--color-ink);
}
.mk-hd b,
.mk-hd span,
.ev-hd .q,
.ev-hd .sub,
.ev-hd .sc small,
.ev-hd .sc b { color: inherit; }
.mk-hd,
.mk-bd,
.ev-hd,
.ev-col,
.ev-ft { padding: var(--space-sm); }
.mk-hd b,
.mk-hd span,
.mk-hint,
.ev-l,
.ev-rule .id,
.ev-script sup { font-family: var(--font-body); }
.row,
.rv-row {
  border-radius: var(--radius-input);
  background: transparent;
}
.row.req { border-color: var(--color-accent); background: var(--color-accent-soft); }
.row.opt { border-color: var(--color-mark); background: var(--color-mark-soft); }
.row.built { background: var(--color-paper-2); }
.row .ic,
.rv-row .ic { border-radius: var(--radius-input); }
.pill,
.stx,
.ev-st,
.ev-ft .conf { border-radius: var(--radius-input); }

.stats {
  margin-block-start: var(--space-xl);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-block: var(--rule-hair) solid var(--color-rule);
}
.stat { min-width: 0; padding: var(--space-sm); border-inline-end: var(--rule-hair) solid var(--color-rule-2); }
.stat:nth-child(2n) { border-inline-end: 0; }
.stat dt,
.stat span { font-family: var(--font-body); font-size: 0.6875rem; }
.stat dd { font-family: var(--font-outlier); font-variant-numeric: tabular-nums; }

/* Section rhythm: wide evidence, narrow prose, no repeated pill badges. */
.sec { padding-block: var(--space-2xl); }
.sec.alt {
  border-color: var(--color-rule-2);
  background: color-mix(in oklch, var(--color-paper-2) 84%, transparent);
}
.sec.tight { padding-block: var(--space-lg); }
.sechead { max-width: 52rem; }
.h2 {
  max-width: 16ch;
  margin-block-start: 0;
  color: var(--color-ink);
  font-size: var(--text-display-s);
  font-weight: var(--display-weight);
  line-height: 1.04;
  letter-spacing: var(--tracking-display);
  text-wrap: pretty;
}
.lead { max-width: 42rem; color: var(--color-neutral); font-size: var(--text-md); }

.trust {
  display: grid;
  gap: var(--space-sm);
  justify-items: start;
}
.trust p { max-width: 48rem; color: var(--color-ink-2); font-family: var(--font-display); font-size: var(--text-lg); font-weight: 700; }
.chips { gap: var(--space-2xs); }
.chip {
  border-radius: 0;
  border-color: var(--color-rule);
  background: transparent;
  color: var(--color-neutral);
  font-family: var(--font-body);
  font-size: 0.6875rem;
}

.grid3,
.gridf,
.plans,
.sgrid,
.plist,
.dive { min-width: 0; }
.grid3,
.gridf {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-block-start: var(--space-xl);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}
.card {
  min-width: 0;
  padding: var(--space-lg) var(--space-sm);
  gap: var(--space-sm);
  border: 0;
  border-block-end: var(--rule-hair) solid var(--color-rule-2);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transition: background-color var(--dur-short) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}
.card.lift:hover,
.card.lift:focus-within { transform: none; border-color: var(--color-rule-2); background: var(--color-paper-2); box-shadow: none; }
.card .n {
  width: auto;
  height: auto;
  place-items: initial;
  border-radius: 0;
  background: transparent;
  color: var(--color-mark);
  font-family: var(--font-body);
  font-size: var(--text-sm);
}
.card h3 { color: var(--color-ink); font-size: var(--text-lg); font-weight: 900; }
.card p { color: var(--color-neutral); font-size: var(--text-base); }
.card .tag {
  margin-block-start: auto;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: var(--color-accent-dark);
  font-family: var(--font-body);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.feat { display: grid; grid-template-columns: minmax(0, 1fr); }
.feat .ic { display: none; }
.feat h3,
.feat p { grid-column: auto; }

.dive { grid-template-columns: minmax(0, 1fr); gap: var(--space-xl); }
.klist { gap: 0; }
.klist li { padding-block: var(--space-sm); border-block-start: var(--rule-hair) solid var(--color-rule-2); }
.klist li .tick { border-radius: 0; background: transparent; color: var(--color-accent-dark); }
.ev,
.rv { position: relative; }
.ev::after,
.dive .rv::after {
  position: absolute;
  inset: var(--space-md) calc(var(--space-lg) * -1) auto auto;
  padding: var(--space-2xs) var(--space-xs);
  content: "EVIDENCE";
  border: var(--rule-hair) solid var(--color-mark);
  background: var(--color-paper);
  color: var(--color-mark);
  font-family: var(--font-body);
  font-size: 0.625rem;
  letter-spacing: var(--tracking-label);
  transform: rotate(3deg);
}
.dive .rv::after { content: "EXCEPTIONS ONLY"; }

/* Subject catalogue: inventory, not rounded mini-cards. */
.subj-label {
  margin-block: 0 var(--space-sm);
  padding-block-end: var(--space-xs);
  border-block-end: var(--rule-fine) solid var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.subj-label.ib { margin-block-start: var(--space-xl); }
.sgrid,
.sgrid.ib {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-inline-start: var(--rule-hair) solid var(--color-rule-2);
}
.scard {
  min-width: 0;
  min-height: 6rem;
  padding: var(--space-sm);
  justify-content: space-between;
  border: 0;
  border-inline-end: var(--rule-hair) solid var(--color-rule-2);
  border-block-end: var(--rule-hair) solid var(--color-rule-2);
  border-radius: 0;
  background: transparent;
  transition: background-color var(--dur-short) var(--ease-out);
}
.scard:hover,
.scard:focus-within { transform: none; border-color: var(--color-rule-2); background: var(--color-accent-soft); box-shadow: none; }
.scard b { color: var(--color-ink); font-family: var(--font-display); font-size: var(--text-base); }
.scard span { color: var(--color-muted); font-family: var(--font-body); font-size: 0.6875rem; }
.scard .core { border-radius: 0; background: var(--color-accent); color: var(--color-accent-ink); }

.plist { gap: 0 var(--space-xl); }
.plist > div { border-color: var(--color-rule); }
.plist dt { font-size: var(--text-lg); font-weight: 900; }
.plist dd { color: var(--color-neutral); font-size: var(--text-base); }

/* Pricing reads like a choice sheet. */
.plans { grid-template-columns: minmax(0, 1fr); gap: 0; border-block: var(--rule-fine) solid var(--color-ink); }
.plan {
  padding: var(--space-lg);
  gap: var(--space-md);
  border: 0;
  border-block-end: var(--rule-hair) solid var(--color-rule);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.plan.free { border: 0; border-block-end: var(--rule-hair) solid var(--color-rule); background: var(--color-paper-2); box-shadow: none; }
.ribbon {
  inset: calc(var(--space-sm) * -1) var(--space-lg) auto auto;
  left: auto;
  padding: var(--space-2xs) var(--space-xs);
  border-radius: 0;
  background: var(--color-mark);
  color: var(--color-accent-ink);
  font-family: var(--font-body);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.plan-hd .tag { border-radius: 0; background: transparent !important; font-family: var(--font-body); }
.plan.free .plan-hd .tag { color: var(--color-accent-dark); }
.plan.school .plan-hd .tag { color: var(--color-mark); }

.faqwrap { width: min(100%, 68rem); max-width: 68rem; }
.faq details {
  margin: 0;
  padding-inline: 0;
  border: 0;
  border-block-start: var(--rule-hair) solid var(--color-rule);
  border-radius: 0;
  background: transparent;
}
.faq details:last-child { border-block-end: var(--rule-hair) solid var(--color-rule); }
.faq summary { min-height: 4.5rem; padding: var(--space-sm) 0; font-size: var(--text-md); }
.faq summary .car { color: var(--color-mark); }
.faq p { max-width: 60rem; margin-block-end: var(--space-lg); color: var(--color-neutral); font-size: var(--text-base); }

/* Final CTA and Ft5 statement footer. */
.final { width: min(100%, var(--page-max)); max-width: var(--page-max); }
.final-box {
  padding: var(--space-xl) 0;
  overflow: visible;
  border-block: var(--rule-fine) solid var(--color-ink);
  border-radius: 0;
  background: transparent;
  color: var(--color-ink);
  text-align: start;
  box-shadow: none;
}
.final-box h2 { max-width: 14ch; margin: 0; color: var(--color-ink); font-size: var(--text-display-s); }
.final-box .lead { margin-inline: 0; color: var(--color-neutral); }
.final-box .note { color: var(--color-muted); }
.final-box .note a { color: var(--color-accent-dark); }

footer { background: var(--color-ink); color: var(--color-paper); }
.foot-in { padding-block: var(--space-2xl) var(--space-lg); }
.foot-top { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
.foot-brand { max-width: none; }
.foot-brand::before {
  display: block;
  max-width: 18ch;
  margin-block-end: var(--space-xl);
  content: "Evidence for every mark. Judgment stays with the teacher.";
  color: var(--color-paper);
  font-family: var(--font-display);
  font-size: var(--text-display-s);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: var(--tracking-display);
}
html[lang^="zh"] .hero-visual::before { content: "評分依據 / 01"; }
html[lang^="zh"] .ev::after { content: "逐項證據"; }
html[lang^="zh"] .dive .rv::after { content: "只列疑問"; }
html[lang^="zh"] .foot-brand::before { content: "每一分都有證據，最後決定仍在老師手上。"; }
.foot-brand b { color: var(--color-paper); font-family: var(--font-display); }
.foot-brand small,
.foot-brand p,
.foot-claims p,
.foot-base { color: color-mix(in oklch, var(--color-paper) 66%, var(--color-ink)); }
.foot-brand a { color: var(--color-paper); }
.foot-lang { justify-self: start; border-color: color-mix(in oklch, var(--color-paper) 28%, var(--color-ink)); }
.foot-lang a { color: color-mix(in oklch, var(--color-paper) 70%, var(--color-ink)); }
.foot-lang a.on { background: var(--color-paper); color: var(--color-ink); }
.foot-claims {
  grid-template-columns: minmax(0, 1fr);
  border-color: color-mix(in oklch, var(--color-paper) 20%, var(--color-ink));
}
.foot-base { align-items: center; border-block-start: var(--rule-hair) solid color-mix(in oklch, var(--color-paper) 20%, var(--color-ink)); padding-block-start: var(--space-sm); }

/* The original every-section reveal is deliberately cut. */
.js .rev,
.js .rev.in { opacity: 1; transform: none; transition: none; }

@media (hover: hover) and (pointer: fine) {
  .btn:active { transform: translateY(1px); }
}

@media (min-width: 40rem) {
  .hero { padding-block: var(--space-xl) var(--space-2xl); }
  .stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .stat:nth-child(2n) { border-inline-end: var(--rule-hair) solid var(--color-rule-2); }
  .stat:last-child { border-inline-end: 0; }
  .grid3,
  .gridf { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .grid3 > :nth-child(1) { grid-column: span 5; }
  .grid3 > :nth-child(2) { grid-column: span 4; }
  .grid3 > :nth-child(3) { grid-column: span 3; }
  .gridf > :nth-child(1),
  .gridf > :nth-child(4) { grid-column: span 5; }
  .gridf > :nth-child(2),
  .gridf > :nth-child(5) { grid-column: span 3; }
  .gridf > :nth-child(3),
  .gridf > :nth-child(6) { grid-column: span 4; }
  .sgrid,
  .sgrid.ib { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .plans { grid-template-columns: 1.08fr 0.92fr; }
  .plan { border-block-end: 0; border-inline-end: var(--rule-hair) solid var(--color-rule); }
  .plan:last-child { border-inline-end: 0; }
  .foot-claims { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 56rem) {
  .nav-in { grid-template-columns: auto minmax(0, 1fr); }
  .nav-links { display: flex; }
  .hero-grid { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: var(--space-2xl); }
  .hero .mk { width: calc(100% + min(5rem, 7vw)); }
  .trust { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); align-items: center; }
  .dive { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: var(--space-2xl); }
  .sgrid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .sgrid.ib { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .foot-top { grid-template-columns: minmax(0, 1fr) auto; }
  .foot-lang { justify-self: end; }
  .foot-claims { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 80rem) {
  .hero-grid { grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.32fr); }
  .sgrid { grid-template-columns: repeat(7, minmax(0, 1fr)); }
  .sgrid.ib { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (max-width: 24rem) {
  .nav-tools { gap: var(--space-2xs); }
  .nav .langseg { display: none; }
  .hero-cta { align-items: stretch; flex-direction: column; }
  .hero-cta .btn { justify-content: center; }
  .sgrid,
  .sgrid.ib { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .nav.is-floating .nav-in,
  .btn:hover,
  .btn:active { transform: none; }
  *, *::before, *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }
  .hero .mk { animation-name: workspace-enter-reduced; }
  @keyframes workspace-enter-reduced {
    from { opacity: 0; transform: rotate(0.7deg); }
    to { opacity: 1; transform: rotate(0.7deg); }
  }
}