:root {
  --ink: #143c3b;
  --muted: #526764;
  --paper: #f5f6f0;
  --surface: #fffdf8;
  --surface-hover: #edf2e8;
  --surface-pressed: #e2ebdc;
  --icon-surface: #e9eee2;
  --line: #d6dfd3;
  --interactive-line: #7e9780;
  --focus: #285e42;
  --radius: 18px;
  --text-small: .8125rem;
  --text-body: .9375rem;
  --text-title: 1.375rem;
  --text-heading: 1.75rem;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.page-shell {
  max-width: 1120px;
  min-height: 100vh;
  min-height: 100svh;
  margin-inline: auto;
  padding-inline: 32px;
  display: flex;
  flex-direction: column;
}

.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.025em;
  border-radius: 4px;
}

.brand-mark {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: .5rem;
  font-size: 1.125rem;
  line-height: 1;
  letter-spacing: 0;
  background: var(--ink);
  color: var(--paper);
}

main {
  padding-block: 32px 40px;
  scroll-margin-top: 16px;
}

.hero {
  margin-block-end: 28px;
}

h1 {
  margin: 0;
  font-size: var(--text-heading);
  font-weight: 600;
  line-height: 1.4;
  text-wrap: balance;
}

.hero-description {
  margin: 8px 0 0;
  font-size: var(--text-body);
  color: var(--muted);
  text-wrap: pretty;
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.app-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 212px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow-wrap: break-word;
}

.card-heading {
  display: flex;
  align-items: center;
  gap: 14px;
}

.app-icon {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--icon-surface);
}

.app-icon svg,
.arrow {
  display: block;
}

.app-card h2 {
  margin: 0;
  font-size: var(--text-title);
  font-weight: 600;
  line-height: 1.4;
  text-wrap: balance;
}

.app-card p {
  margin: 16px 0 24px;
  font-size: var(--text-body);
  color: var(--muted);
  text-wrap: pretty;
}

.app-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-block-start: auto;
}

.app-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  max-width: 100%;
  padding: 8px 14px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  font-size: var(--text-body);
  font-weight: 600;
  line-height: 1.6;
}

.app-link-secondary {
  border-color: var(--interactive-line);
  color: var(--muted);
  font-weight: 400;
}

.arrow {
  flex-shrink: 0;
}

.app-link:focus-visible {
  background: var(--surface-hover);
  border-color: var(--ink);
}

@media (hover: hover) {
  .app-link:hover {
    background: var(--surface-hover);
    border-color: var(--ink);
  }

  footer a:hover {
    text-decoration: underline;
    text-underline-offset: .25em;
    text-decoration-thickness: from-font;
  }
}

.app-link:active {
  background: var(--surface-pressed);
  border-color: var(--ink);
}

.access-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: var(--text-small);
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-block-start: auto;
  padding-block: 16px;
  border-top: 1px solid var(--line);
  font-size: var(--text-small);
  color: var(--muted);
}

footer p {
  margin: 0;
}

footer a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  inset-inline-start: 16px;
  top: -100px;
  z-index: 1;
  max-width: calc(100% - 32px);
  padding: 12px 16px;
  border-radius: 4px;
  background: var(--ink);
  color: var(--paper);
}

.skip-link:focus {
  top: 12px;
}

[dir="rtl"] .arrow {
  transform: scaleX(-1);
}

@media (prefers-reduced-motion: no-preference) {
  .app-link {
    transition: background-color 120ms, border-color 120ms;
  }
}

/* Two full Chinese titles plus their icons need more than 42rem. */
@media (max-width: 42rem) {
  .page-shell {
    padding-inline: 20px;
  }

  .site-header {
    min-height: 64px;
  }

  main {
    padding-block: 24px 28px;
  }

  .hero {
    margin-block-end: 24px;
  }

  h1 {
    font-size: 1.5rem;
  }

  .application-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .app-card {
    min-height: 184px;
    padding: 20px;
  }

  .card-heading {
    gap: 12px;
  }

  .app-card h2 {
    font-size: 1.25rem;
  }

  .app-card p {
    margin-block: 12px 20px;
  }

  footer {
    gap: 0 20px;
  }
}

@media (forced-colors: active) {
  :focus-visible {
    outline-color: Highlight;
  }

  .app-link {
    border-color: LinkText;
  }
}