.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(1.2) blur(12px);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 650;
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
  padding-block: 6px;
  flex-shrink: 0;
}
.brand:hover { color: var(--ink); }
.brand__mark {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  background: var(--ink);
  color: var(--paper);
  border-radius: 9px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.08);
}
.brand__mark svg { width: 17px; height: 17px; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
}
.lang-switch a {
  padding: 3px 8px;
  border-radius: 999px;
  color: var(--ink-mute);
  text-decoration: none;
  line-height: 1.4;
}
.lang-switch a:hover { color: var(--ink); background: var(--surface-2); }
.lang-switch a[aria-current="true"] { background: var(--ink); color: var(--paper); }

.nav-main {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: var(--space-2);
}
.nav-main a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: .925rem;
  padding: 8px 11px;
  border-radius: 999px;
  transition: background .15s var(--ease), color .15s var(--ease);
}
.nav-main a:hover { background: var(--surface-2); color: var(--ink); }
.nav-main a[aria-current="page"] { color: var(--ink); background: var(--surface-2); }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 210px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-mute);
  font-size: .9rem;
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.search-trigger:hover { border-color: var(--accent); color: var(--ink-soft); }
.search-trigger kbd {
  margin-left: auto;
  font-size: .7rem;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 5px;
  color: var(--ink-mute);
  background: var(--surface-2);
}

.icon-button {
  width: 38px; height: 38px;
  display: inline-grid; place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  transition: background .15s var(--ease), color .15s var(--ease), transform .15s var(--ease);
}
.icon-button:hover { background: var(--surface-2); color: var(--ink); transform: translateY(-1px); }
.icon-button svg { width: 17px; height: 17px; }
.icon-button[hidden] { display: none; }

.nav-toggle { display: none; }

.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  padding: var(--space-3) 0 var(--space-5);
}
.mobile-nav[data-open="true"] { display: block; }
.mobile-nav a {
  display: block;
  padding: 11px 4px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-size: 1rem;
}
.mobile-nav a:last-child { border-bottom: 0; }

.hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(44px, 7vw, 88px) clamp(32px, 5vw, 60px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(circle at 15% 20%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 55%),
    radial-gradient(circle at 85% 0%, color-mix(in srgb, var(--warm) 7%, transparent), transparent 45%),
    radial-gradient(color-mix(in srgb, var(--ink) 12%, transparent) 1px, transparent 1px);
  background-size: auto, auto, 26px 26px;
  opacity: .9;
  mask-image: linear-gradient(to bottom, black, transparent 92%);
}
.hero h1 { max-width: 20ch; margin-bottom: var(--space-4); }
.hero .lede { font-size: clamp(1.02rem, 1.5vw, 1.18rem); }
.hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  align-items: center;
}
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
}
.hero__note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .86rem;
  color: var(--ink-mute);
  margin-top: var(--space-3);
}
.hero__note svg { width: 15px; height: 15px; flex-shrink: 0; color: var(--accent); }
.hero__stats {
  display: flex;
  gap: var(--space-5);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.hero__stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
}
.hero__stat span { font-size: .8rem; color: var(--ink-mute); }

.hero-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow);
}
.hero-panel h2 {
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 650;
  letter-spacing: 0;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-panel ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 12px;
}
.hero-panel li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  align-items: start;
  font-size: .9rem;
  color: var(--ink-soft);
  margin: 0;
}
.hero-panel li::before {
  content: counter(step);
  width: 24px; height: 24px;
  display: grid; place-items: center;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 500;
}
.hero-panel li strong { color: var(--ink); font-weight: 600; }

.hero-search { position: relative; margin-top: var(--space-5); max-width: 560px; }
.hero-search__bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 7px 7px 16px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.hero-search__bar:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 14%, transparent);
}
.hero-search__bar svg { width: 18px; height: 18px; color: var(--ink-mute); flex-shrink: 0; }
.hero-search__bar input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  font-size: .98rem;
  padding: 8px 0;
}
.hero-search__bar input:focus { outline: none; }
.hero-search__bar .btn { flex-shrink: 0; }
.hero-search__results {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 8px);
  z-index: 20;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  max-height: 320px;
  overflow-y: auto;
}
.hero-search__results a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-xs);
  text-decoration: none;
  color: var(--ink);
  font-size: .92rem;
}
.hero-search__results a:hover, .hero-search__results a:focus { background: var(--accent-soft); }
.hero-search__results a span { margin-left: auto; font-size: .74rem; color: var(--ink-mute); font-family: var(--font-mono); }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: var(--space-4); }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: .82rem;
  text-decoration: none;
  transition: border-color .15s var(--ease), color .15s var(--ease), background .15s var(--ease);
}
.chip:hover { border-color: var(--accent); color: var(--accent-strong); background: var(--accent-soft); }

.card-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fill, minmax(248px, 1fr));
}
.card-grid--wide { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

.category-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: var(--space-4) var(--space-4) var(--space-4);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: transform .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.tool-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
  color: inherit;
}
.tool-card h3 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: -.005em;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: space-between;
}
.tool-card h3 svg { width: 15px; height: 15px; color: var(--ink-mute); flex-shrink: 0; transition: transform .18s var(--ease), color .18s var(--ease); }
.tool-card:hover h3 svg { transform: translateX(2px); color: var(--accent); }
.tool-card p { margin: 0; font-size: .875rem; color: var(--ink-mute); line-height: 1.5; }
.tool-card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 10px;
  font-size: .72rem;
  font-family: var(--font-mono);
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.tool-card__icon {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  margin-bottom: 4px;
}
.tool-card__icon svg { width: 17px; height: 17px; }

.category-card {
  padding: var(--space-5);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  display: grid;
  gap: 6px;
  align-content: start;
  transition: border-color .18s var(--ease), transform .18s var(--ease), box-shadow .18s var(--ease);
}
.category-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); color: inherit; }
.category-card__top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.category-card h3 { margin: 0; font-family: var(--font-sans); font-size: 1.05rem; font-weight: 650; }
.category-card p { margin: 0; color: var(--ink-mute); font-size: .9rem; }
.category-card__count { font-family: var(--font-mono); font-size: .72rem; color: var(--ink-mute); }
.category-card__icon {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: var(--surface-2);
  color: var(--accent-strong);
  border: 1px solid var(--line);
}
.category-card__icon svg { width: 19px; height: 19px; }

.prose { max-width: 72ch; }
.prose h2 { margin-top: var(--space-6); }
.prose h3 { margin-top: var(--space-5); }
.prose p, .prose li { color: var(--ink-soft); }
.prose a { font-weight: 500; }

.footer {
  margin-top: clamp(48px, 7vw, 96px);
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding-block: var(--space-7) var(--space-5);
}
.footer__grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: minmax(240px, 1.2fr) repeat(3, minmax(140px, 1fr));
}
@media (max-width: 860px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .footer__grid { grid-template-columns: 1fr; }
}
.footer h3 {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 500;
  margin-bottom: var(--space-3);
}
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer a { color: var(--ink-soft); text-decoration: none; font-size: .9rem; }
.footer a:hover { color: var(--accent); text-decoration: underline; }
.footer__brand p { color: var(--ink-mute); font-size: .9rem; max-width: 34ch; }
.footer__bottom {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line);
  display: flex;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  color: var(--ink-mute);
  font-size: .82rem;
}
.footer__bottom a { color: var(--ink-mute); }
.footer__credit {
  margin: var(--space-4) 0 0;
  font-size: .82rem;
  color: var(--ink-mute);
  text-align: center;
}
.footer__credit a { color: var(--ink-soft); }

@media (max-width: 1020px) {
  .nav-main { display: none; }
  .nav-toggle { display: inline-grid; }
  .search-trigger { min-width: 0; }
  .search-trigger span { display: none; }
  .search-trigger kbd { display: none; }
}
@media (max-width: 560px) {
  .brand span.brand__text { display: none; }
}