:root {
  color-scheme: light;
  --ink: #17202c;
  --muted: #687586;
  --subtle: #eef3f7;
  --surface: #ffffff;
  --surface-soft: #f8fbfd;
  --line: #d8e2ea;
  --primary: #0f766e;
  --primary-dark: #0b5f59;
  --accent: #b45309;
  --code-bg: #101722;
  --code-ink: #d9f7e8;
  --radius: 8px;
  --shadow: 0 10px 28px rgba(23, 32, 44, 0.08);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface-soft);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 100;
  transform: translateY(-140%);
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
  padding: 0.75rem 1rem;
  transition: transform 180ms var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 251, 253, 0.96)),
    var(--surface);
}

.topbar,
.search-hero,
.page-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 58px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 44px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: var(--radius);
  background: var(--code-bg);
  color: var(--code-ink);
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-weight: 850;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  line-height: 1.1;
}

.brand small {
  color: var(--muted);
  font-size: 0.76rem;
}

.top-meta {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  padding: 0 0.7rem;
  font-size: 0.86rem;
  font-weight: 700;
}

.top-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  padding: 0 0.6rem;
  font-size: 0.88rem;
  font-weight: 750;
}

.language-switcher select {
  min-height: 34px;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  outline: 0;
}

.search-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(340px, 1.12fr);
  align-items: end;
  gap: clamp(1rem, 3vw, 2rem);
  padding: clamp(1rem, 2.5vw, 1.8rem) 0 clamp(0.9rem, 2vw, 1.35rem);
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--primary-dark);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 15ch;
  margin-bottom: 0;
  font-size: clamp(1.65rem, 3vw, 2.65rem);
  line-height: 1.1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.25rem;
  font-size: 1rem;
  line-height: 1.28;
}

.hero-text {
  max-width: 32ch;
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 54px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 0 1rem;
  box-shadow: var(--shadow);
}

.hero-search {
  width: 100%;
  max-width: none;
}

.search-icon {
  display: inline-grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 6px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary-dark);
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-weight: 850;
}

.search-box input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
}

.search-box:focus-within {
  border-color: rgba(15, 118, 110, 0.6);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12), var(--shadow);
}

.page-shell {
  padding: 0.65rem 0 3.5rem;
}

.side-ad {
  position: fixed;
  top: 92px;
  z-index: 8;
  width: clamp(120px, calc((100vw - 1180px) / 2 - 28px), 180px);
  max-width: 180px;
  min-width: 120px;
}

.side-ad-left {
  left: max(1rem, calc((100vw - 1180px) / 2 - 204px));
}

.side-ad-right {
  right: max(1rem, calc((100vw - 1180px) / 2 - 204px));
}

.ad-slot {
  min-height: 280px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 251, 253, 0.96)),
    #fff;
  padding: 0.85rem;
  color: var(--muted);
  box-shadow: 0 6px 18px rgba(23, 32, 44, 0.05);
}

.ad-label {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 0.48rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
}

.ad-slot strong {
  display: block;
  margin: 0.9rem 0 0.3rem;
  color: var(--ink);
  font-size: 0.98rem;
  line-height: 1.25;
}

.ad-slot p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.5;
}

.filter-section {
  position: sticky;
  top: 0;
  z-index: 10;
  margin: 0 -0.25rem 0.8rem;
  padding: 0.45rem 0.25rem;
  background: rgba(248, 251, 253, 0.92);
  backdrop-filter: blur(12px);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.filter-chip,
.text-button,
.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border-radius: var(--radius);
  font-weight: 750;
  text-decoration: none;
}

.filter-chip,
.text-button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  padding: 0.5rem 0.75rem;
}

.filter-chip:hover,
.text-button:hover {
  border-color: rgba(15, 118, 110, 0.42);
  color: var(--ink);
}

.filter-chip[aria-pressed="true"] {
  border-color: transparent;
  background: var(--ink);
  color: #fff;
}

.results-section {
  display: grid;
  gap: 0.8rem;
}

.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.toolbar-actions p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.command-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.72rem;
}

.command-card {
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 0.65rem;
  min-height: 196px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 0.82rem;
  box-shadow: 0 6px 18px rgba(23, 32, 44, 0.05);
  transition:
    transform 160ms var(--ease),
    border-color 160ms var(--ease),
    box-shadow 160ms var(--ease);
}

.command-card:hover {
  transform: translateY(-2px);
  border-color: rgba(15, 118, 110, 0.38);
  box-shadow: 0 12px 26px rgba(23, 32, 44, 0.08);
}

.command-card.is-copied {
  border-color: rgba(15, 118, 110, 0.72);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.7rem;
}

.card-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  background: #fff7ed;
  color: var(--accent);
  padding: 0.14rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 850;
  white-space: nowrap;
}

.command-code {
  overflow-x: auto;
  border-radius: var(--radius);
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 0.75rem;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.86rem;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.card-bottom {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 0.7rem;
}

.card-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.copy-button {
  flex: 0 0 auto;
  border: 0;
  background: var(--primary);
  color: #fff;
  padding: 0.62rem 0.8rem;
}

.copy-button:hover {
  background: var(--primary-dark);
}

.empty-state {
  grid-column: 1 / -1;
  border: 1px dashed rgba(104, 117, 134, 0.45);
  border-radius: var(--radius);
  background: #fff;
  padding: 2rem;
  text-align: center;
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 20;
  transform: translateY(140%);
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
  padding: 0.85rem 1rem;
  box-shadow: var(--shadow);
  transition: transform 180ms var(--ease);
}

.toast.is-visible {
  transform: translateY(0);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 1.25rem 1rem;
  color: var(--muted);
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.detail-header {
  background: #fff;
}

.detail-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 1rem;
  padding-top: 1.2rem;
}

.detail-page,
.related-section {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 1.1rem;
  box-shadow: 0 6px 18px rgba(23, 32, 44, 0.05);
}

.back-link {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--primary-dark);
  font-weight: 800;
  text-decoration: none;
}

.detail-page h1 {
  max-width: 18ch;
  margin-bottom: 1rem;
}

.detail-code {
  display: block;
  overflow-x: auto;
  border-radius: var(--radius);
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 1rem;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.detail-hint {
  margin: 1rem 0;
  color: var(--muted);
}

.detail-copy {
  width: auto;
}

.related-section ul {
  display: grid;
  gap: 0.55rem;
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
}

.related-section a {
  color: var(--ink);
  font-weight: 750;
  text-decoration-color: rgba(15, 118, 110, 0.35);
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 3px solid rgba(180, 83, 9, 0.45);
  outline-offset: 3px;
}

@media (max-width: 1020px) {
  .side-ad {
    display: none;
  }

  .command-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1500px) {
  .side-ad {
    display: none;
  }
}

@media (max-width: 720px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.35rem;
    padding: 0.65rem 0;
  }

  .top-meta {
    min-height: 32px;
  }

  h1 {
    max-width: 100%;
    font-size: 2rem;
  }

  .search-hero {
    grid-template-columns: 1fr;
    align-items: stretch;
    padding-top: 0.8rem;
  }

  .results-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .toolbar-actions {
    justify-content: flex-start;
  }

  .command-list {
    grid-template-columns: 1fr;
  }

  .detail-shell {
    grid-template-columns: 1fr;
  }

  .filter-section {
    position: static;
  }
}

@media (max-width: 520px) {
  .topbar,
  .search-hero,
  .page-shell {
    width: min(100% - 1rem, 1180px);
  }

  .filter-row,
  .toolbar-actions {
    flex-direction: column;
  }

  .filter-chip,
  .text-button,
  .copy-button {
    width: 100%;
  }

  .card-bottom {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}