:root {
  color-scheme: light dark;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --bg: #fafaf7;
  --surface: #ffffff;
  --surface-subtle: #f0f1eb;
  --fg: #212923;
  --muted: #60665f;
  --border: #dedfd7;
  --accent: #27634a;
  --accent-soft: #e6eee4;
  --invoice-bg: #e9eee5;
  --invoice-fg: #466046;
  --safeguard-bg: #ece9e2;
  --safeguard-fg: #776346;
  --fluency-bg: #e7e9f0;
  --fluency-fg: #5c6783;
  --shadow: 0 8px 24px #21292305;
  --radius: 1.25rem;
  --radius-small: 0.6rem;
  --layout-width: 72rem;
  --prose-width: 46rem;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: clamp(3.5rem, 7vw, 6rem);
  --display: clamp(3.8rem, 8vw, 7.5rem);
  --heading: clamp(2rem, 4vw, 3.25rem);
  --motion: 160ms ease;
}
* {
  box-sizing: border-box;
}
html {
  scroll-padding-top: 2rem;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1rem/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-underline-offset: 0.22em;
}
a,
button {
  -webkit-tap-highlight-color: transparent;
}
a:hover {
  text-decoration-thickness: 2px;
}
a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
  border-radius: 0.2rem;
}
main:focus {
  outline: none;
}
::selection {
  background: var(--accent-soft);
  color: var(--fg);
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  line-height: 1.12;
  font-weight: 600;
  letter-spacing: -0.045em;
}
h1 {
  font-size: var(--display);
}
h2 {
  font-size: var(--heading);
}
h3 {
  font-size: 1.35rem;
  letter-spacing: -0.025em;
}
p {
  color: var(--muted);
}
strong {
  color: var(--fg);
  font-weight: 600;
}
.container {
  width: min(100% - var(--gutter) * 2, var(--layout-width));
  margin-inline: auto;
}
.section {
  padding-block: var(--space-6);
}
.eyebrow,
.small-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.eyebrow {
  color: var(--accent);
  margin-bottom: var(--space-3);
}
.small-label {
  color: var(--muted);
}
.lead {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  line-height: 1.6;
  max-width: 42rem;
}
.accent {
  color: var(--accent);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  left: 1rem;
  top: -10rem;
  z-index: 10;
  padding: 0.75rem 1rem;
  background: var(--fg);
  color: var(--bg);
  border-radius: var(--radius-small);
}
.skip-link:focus {
  top: 1rem;
}
.site-header {
  border-bottom: 1px solid var(--border);
}
.header-inner {
  min-height: 6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.wordmark {
  display: inline-flex;
  gap: 0.3rem;
  align-items: baseline;
  font-size: 1.5rem;
  font-weight: 750;
  letter-spacing: -0.045em;
  line-height: 1.2;
  text-decoration: none;
}
.brand-dot {
  display: inline-block;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--accent);
}
.site-header nav {
  display: flex;
  gap: clamp(0.8rem, 3vw, 2.5rem);
}
.site-header nav a {
  padding-block: 0.8rem;
  text-decoration: none;
  font-size: 0.9rem;
  color: var(--muted);
}
.site-header nav a:hover,
.site-header nav a[aria-current] {
  color: var(--fg);
}
.site-header nav a[aria-current] {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 0.6rem;
}
.home-hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-5);
  align-items: center;
  padding-block: clamp(4rem, 8vw, 7rem);
}
.hero-copy .eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.home-hero h1 {
  line-height: 0.98;
  letter-spacing: -0.065em;
  margin-bottom: var(--space-4);
}
.hero-subtitle {
  color: var(--fg);
  font-size: clamp(1.45rem, 2.7vw, 2.2rem);
  line-height: 1.3;
  letter-spacing: -0.03em;
}
.hero-description {
  margin-top: var(--space-3);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 0.8rem;
  min-height: 3.1rem;
  padding: 0.7rem 1.2rem;
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
  border-radius: var(--radius-small);
  font-size: 0.85rem;
  font-weight: 550;
  text-decoration: none;
  transition:
    transform var(--motion),
    box-shadow var(--motion);
}
.button-secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}
.button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.hero-note {
  justify-self: end;
  width: 100%;
  max-width: 24rem;
  min-height: 26rem;
  padding: 2.5rem;
  background: var(--surface-subtle);
  border-radius: 2rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.hero-note > p {
  color: var(--muted);
  font-size: clamp(2rem, 3vw, 3rem);
  letter-spacing: -0.045em;
  line-height: 1.2;
  margin-top: auto;
}
.note-caption {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: var(--space-3);
}
.studio-mark {
  display: flex;
  gap: 0.65rem;
  align-items: center;
  height: 9rem;
  margin-block: 1.5rem;
}
.studio-mark span {
  display: block;
  width: 2.7rem;
  height: 5.5rem;
  background: var(--accent);
  border-radius: 2rem;
  transform: rotate(25deg);
  opacity: 0.92;
}
.studio-mark span:nth-child(2) {
  height: 7.5rem;
  opacity: 0.65;
}
.studio-mark span:nth-child(3) {
  height: 4rem;
  opacity: 0.35;
}
.section-heading {
  display: flex;
  gap: var(--space-4);
  align-items: end;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}
.section-heading .eyebrow {
  margin-bottom: var(--space-2);
}
.section-heading > p {
  max-width: 24rem;
}
.text-link {
  font-weight: 550;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-block;
  padding-block: 0.5rem;
}
.text-link:hover,
.store-link:hover {
  text-decoration: underline;
}
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}
.app-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.product-art {
  min-height: 15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  position: relative;
  gap: 1.5rem;
  padding: 2.5rem 1rem;
}
.invoice {
  background: var(--invoice-bg);
  color: var(--invoice-fg);
}
.safeguard {
  background: var(--safeguard-bg);
  color: var(--safeguard-fg);
}
.fluency {
  background: var(--fluency-bg);
  color: var(--fluency-fg);
}
.product-symbol {
  width: 6rem;
  height: 6rem;
}
.art-caption {
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
}
.app-icon {
  border-radius: 1.5rem;
  object-fit: contain;
}
.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: var(--space-3);
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.65rem;
  font-weight: 550;
  border-radius: 2rem;
  padding: 0.25rem 0.65rem;
  line-height: 1.6;
  white-space: nowrap;
}
.available {
  background: var(--accent-soft);
  color: var(--accent);
}
.development {
  background: var(--surface-subtle);
  color: var(--muted);
}
.status-dot {
  width: 0.3rem;
  height: 0.3rem;
  background: currentColor;
  border-radius: 50%;
}
.card-body h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-2);
}
.card-body h3 a {
  text-decoration: none;
}
.card-body h3 a:hover {
  text-decoration: underline;
}
.card-body > p {
  font-size: 0.9rem;
  margin-bottom: var(--space-3);
}
.card-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
}
.card-links .text-link,
.store-link {
  font-size: 0.75rem;
}
.store-link {
  color: var(--accent);
  text-decoration: none;
  padding-block: 0.5rem;
}
.philosophy {
  background: var(--surface-subtle);
  margin-top: var(--space-5);
}
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}
.principle {
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}
.principle h3 {
  margin-block: var(--space-3) var(--space-2);
}
.principle p {
  font-size: 0.95rem;
}
.builder {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-5);
  align-items: center;
}
.builder .text-link {
  margin-top: var(--space-3);
}
.site-footer {
  padding-block: var(--space-5) var(--space-4);
  border-top: 1px solid var(--border);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
}
.footer-top p {
  font-size: 0.8rem;
  margin-top: var(--space-2);
}
.footer-top nav {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  gap: 1.5rem;
}
.footer-top nav a {
  font-size: 0.8rem;
  padding-block: 0.5rem;
  text-decoration: none;
}
.footer-top nav a:hover {
  text-decoration: underline;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: 0.7rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: var(--space-5);
  padding-top: var(--space-3);
}
.page-intro {
  padding-top: var(--space-6);
}
.page-intro h1 {
  font-size: clamp(2.7rem, 6vw, 5rem);
  margin-bottom: var(--space-3);
}
.catalog {
  padding-top: var(--space-5);
}
.catalog-note {
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
  max-width: 42rem;
}
.catalog-note p:last-child {
  margin-top: var(--space-3);
}
.app-hero {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--space-5);
  align-items: center;
  padding-block: var(--space-6);
}
.back-link {
  font-size: 0.8rem;
  color: var(--muted);
  text-decoration: none;
  display: inline-block;
  padding-block: 0.5rem;
  margin-bottom: var(--space-4);
}
.back-link:hover {
  text-decoration: underline;
}
.app-hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  font-size: 0.8rem;
  color: var(--muted);
}
.app-hero h1 {
  font-size: clamp(2.5rem, 5.2vw, 4.7rem);
  margin-bottom: var(--space-3);
}
.app-hero .product-art {
  min-height: 25rem;
  border-radius: 2rem;
}
.app-hero .product-symbol {
  width: 9rem;
  height: 9rem;
}
.release-note {
  font-size: 0.75rem;
  margin-top: var(--space-3);
}
.detail-summary {
  border-top: 1px solid var(--border);
  padding-bottom: var(--space-3);
}
.detail-summary h2 {
  max-width: 44rem;
  margin-bottom: var(--space-3);
}
.media-note {
  border-block: 1px solid var(--border);
  padding-block: var(--space-4);
}
.media-note p {
  margin-top: var(--space-1);
  max-width: var(--prose-width);
  font-size: 0.85rem;
}
.screenshots {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.screenshots img {
  max-width: min(100%, 18rem);
  height: auto;
  border-radius: var(--radius);
}
.help-panel {
  background: var(--surface-subtle);
  border-radius: var(--radius);
  padding: var(--space-5);
}
.help-panel h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: var(--space-2);
}
.about-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.5fr;
  gap: var(--space-6);
}
.identity-card {
  background: var(--surface-subtle);
  padding: var(--space-5);
  border-radius: var(--radius);
  align-self: start;
}
.initials {
  font-size: 4rem;
  line-height: 1;
  letter-spacing: -0.08em;
  margin-bottom: var(--space-5);
}
.identity-card h2 {
  font-size: 1.6rem;
  margin-bottom: var(--space-1);
}
.identity-card .small-label {
  display: inline-block;
  margin-top: var(--space-4);
}
.prose h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-block: var(--space-5) var(--space-3);
  letter-spacing: -0.025em;
}
.prose h2:first-child {
  margin-top: 0;
}
.prose h3 {
  margin-block: var(--space-4) var(--space-2);
}
.prose p + p {
  margin-top: var(--space-3);
}
.prose a {
  color: var(--accent);
}
.skill-list {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
}
.skill-list li {
  padding: 0.4rem 0.8rem;
  background: var(--surface-subtle);
  border-radius: var(--radius-small);
  font-size: 0.8rem;
}
.support-card {
  display: grid;
  grid-template-columns: 1fr 1.7fr;
  gap: var(--space-5);
  padding-block: var(--space-5);
  border-top: 1px solid var(--border);
  scroll-margin-top: 2rem;
}
.support-card h2 {
  font-size: 1.8rem;
  margin-bottom: var(--space-3);
}
.support-card h3 {
  margin-bottom: var(--space-2);
}
.support-card p {
  margin-bottom: var(--space-3);
}
.support-card .button + h3 {
  margin-top: var(--space-4);
}
.support-notice {
  background: var(--surface-subtle);
  padding: var(--space-4);
  border-radius: var(--radius);
  margin-top: var(--space-4);
}
.support-notice h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-2);
}
.legal-date {
  margin-top: var(--space-3);
  color: var(--muted);
  font-size: 0.8rem;
}
.legal-content {
  max-width: var(--prose-width);
  padding-block: var(--space-5) var(--space-6);
  margin-left: max(var(--gutter), calc((100% - var(--layout-width)) / 2));
}
.error-actions {
  margin-block: var(--space-5) var(--space-6);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151a17;
    --surface: #1b211d;
    --surface-subtle: #222a24;
    --fg: #eef1e9;
    --muted: #a6afa5;
    --border: #354037;
    --accent: #add3ad;
    --accent-soft: #2b3c30;
    --invoice-bg: #28352b;
    --invoice-fg: #bdd0b2;
    --safeguard-bg: #353025;
    --safeguard-fg: #d6c39e;
    --fluency-bg: #282f40;
    --fluency-fg: #bbc5e4;
    --shadow: 0 8px 24px #00000012;
  }
  .button:not(.button-secondary) {
    color: #17251c;
  }
}
/* Layout breakpoints: compact < 640px; tablet < 960px; wide >= 960px. */
@media (max-width: 959px) {
  .app-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .home-hero {
    grid-template-columns: 1.3fr 1fr;
    gap: var(--space-4);
  }
  .hero-note {
    padding: 1.5rem;
    min-height: 23rem;
  }
  .principle-grid {
    gap: var(--space-3);
  }
  .app-hero,
  .about-grid {
    gap: var(--space-4);
  }
  .app-hero .product-art {
    min-height: 21rem;
  }
  .identity-card {
    padding: var(--space-4);
  }
}
@media (max-width: 639px) {
  .header-inner {
    min-height: 5rem;
  }
  .wordmark {
    font-size: 1.3rem;
  }
  .site-header nav a {
    font-size: 0.8rem;
  }
  .home-hero,
  .app-hero,
  .builder,
  .about-grid,
  .support-card {
    grid-template-columns: 1fr;
  }
  .home-hero {
    padding-top: 3rem;
    gap: var(--space-5);
  }
  .hero-copy .eyebrow {
    font-size: 0.6rem;
    letter-spacing: 0.08em;
  }
  .hero-note {
    max-width: none;
    min-height: 12rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    align-items: center;
  }
  .hero-note .small-label {
    grid-column: 1;
    font-size: 0.65rem;
  }
  .studio-mark {
    grid-column: 2;
    grid-row: 1 / 4;
    justify-self: center;
    height: 8rem;
    margin: 0;
    gap: 0.45rem;
  }
  .studio-mark span {
    width: 1.65rem;
    height: 4rem;
  }
  .studio-mark span:nth-child(2) {
    height: 5.5rem;
  }
  .studio-mark span:nth-child(3) {
    height: 3rem;
  }
  .hero-note > p {
    font-size: 2rem;
    grid-column: 1;
  }
  .note-caption {
    grid-column: 1;
    margin: 0;
    font-size: 0.65rem;
  }
  .app-grid,
  .principle-grid {
    grid-template-columns: 1fr;
  }
  .section-heading {
    align-items: start;
    flex-direction: column;
    gap: var(--space-2);
  }
  .app-card .product-art {
    min-height: 13rem;
  }
  .principle-grid {
    gap: var(--space-4);
  }
  .footer-top {
    flex-direction: column;
  }
  .footer-top nav {
    gap: 1.3rem;
  }
  .app-hero .product-art {
    min-height: 18rem;
  }
  .app-hero h1 {
    font-size: clamp(2.5rem, 10vw, 3.7rem);
  }
  .help-panel {
    padding: var(--space-4);
  }
  .support-card {
    gap: var(--space-4);
  }
  .desktop-break {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
  .button:hover {
    transform: none;
  }
}