:root {
  color-scheme: light;
  --bg: #f3f4f6;
  --bg-soft: rgba(255, 255, 255, 0.68);
  --bg-strong: rgba(255, 255, 255, 0.88);
  --line: rgba(15, 23, 42, 0.08);
  --line-strong: rgba(15, 23, 42, 0.14);
  --text: #0f172a;
  --text-soft: #475569;
  --text-faint: #64748b;
  --accent: #0f62fe;
  --accent-soft: #dbeafe;
  --shadow: 0 24px 80px rgba(15, 23, 42, 0.08);
  --shadow-soft: 0 16px 44px rgba(15, 23, 42, 0.06);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --container: 1180px;
  --font-sans: "Avenir Next", "SF Pro Display", "Helvetica Neue", "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(153, 206, 255, 0.42), transparent 34%),
    radial-gradient(circle at top right, rgba(255, 214, 178, 0.38), transparent 28%),
    linear-gradient(180deg, #fbfcfe 0%, #eef2f7 52%, #f8fafc 100%);
  line-height: 1.6;
}

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

img {
  max-width: 100%;
  display: block;
}

button,
input {
  font: inherit;
}

::selection {
  background: rgba(15, 98, 254, 0.16);
}

.page-shell {
  position: relative;
  overflow: clip;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.glass-card {
  position: relative;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.84), rgba(255, 255, 255, 0.7));
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 1rem 0 0;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 999px;
  backdrop-filter: blur(24px);
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.95rem;
  background: linear-gradient(135deg, #0f172a, #2563eb);
  color: #fff;
  font-size: 0.9rem;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.24);
}

.brand-text {
  font-size: 1rem;
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.site-nav a {
  padding: 0.75rem 1rem;
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 0.96rem;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: rgba(15, 23, 42, 0.06);
  color: var(--text);
}

.nav-cta {
  background: rgba(15, 98, 254, 0.1);
  color: var(--accent) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.3rem;
  width: 2.8rem;
  height: 2.8rem;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  color: var(--text);
}

.nav-toggle span {
  display: block;
  width: 1rem;
  height: 2px;
  margin: 0 auto;
  background: currentColor;
}

.hero,
.subhero {
  padding: 4rem 0 2rem;
}

.hero-grid,
.subhero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 1.5rem;
  align-items: stretch;
}

.hero-copy,
.article-hero {
  padding: 3rem 0;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.8rem, 7vw, 5.6rem);
  max-width: 12ch;
}

.subhero h1,
.article-hero h1 {
  font-size: clamp(2.4rem, 5.6vw, 4.1rem);
  max-width: 14ch;
}

h2 {
  font-size: clamp(1.8rem, 3.8vw, 3rem);
}

h3 {
  font-size: clamp(1.25rem, 2.1vw, 1.55rem);
}

.hero-text,
.section-heading p,
.lede,
.article-content p,
.article-content li,
.article-single p,
.site-footer p,
.search-panel p {
  color: var(--text-soft);
}

.hero-text,
.lede {
  margin: 1.25rem 0 0;
  max-width: 58ch;
  font-size: 1.08rem;
}

.hero-actions,
.split-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.85rem 1.3rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, #0f172a, #2563eb);
  color: #fff;
  box-shadow: 0 18px 38px rgba(37, 99, 235, 0.2);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  color: var(--text);
}

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.stat-row li {
  min-width: 11rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.stat-row strong {
  display: block;
  font-size: 1.55rem;
  letter-spacing: -0.05em;
}

.stat-row span {
  color: var(--text-soft);
  font-size: 0.92rem;
}

.hero-panel {
  min-height: 100%;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.hero-surface {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: end;
  gap: 1.15rem;
  min-height: 100%;
  padding: 2rem;
}

.panel-label,
.feature-kicker,
.card-meta,
.toc-title,
.search-label {
  color: var(--text-faint);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero-panel h2 {
  max-width: 10ch;
}

.hero-orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(18px);
  opacity: 0.72;
}

.hero-orb-a {
  top: 2rem;
  right: -2rem;
  width: 10rem;
  height: 10rem;
  background: rgba(96, 165, 250, 0.35);
}

.hero-orb-b {
  bottom: 2rem;
  left: -2rem;
  width: 9rem;
  height: 9rem;
  background: rgba(251, 191, 36, 0.26);
}

.mini-grid {
  display: grid;
  gap: 0.9rem;
}

.mini-grid article {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.78);
}

.mini-grid span {
  color: var(--text-faint);
  font-size: 0.86rem;
}

.mini-grid strong {
  display: block;
  margin-top: 0.35rem;
  font-size: 1rem;
  line-height: 1.35;
}

.section {
  padding: 2rem 0 4rem;
}

.section-compact {
  padding-top: 0;
}

.section-heading {
  max-width: 48rem;
  margin-bottom: 1.4rem;
}

.section-heading p {
  margin: 0.85rem 0 0;
}

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

.card-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card,
.content-card,
.listing-card,
.seo-list article,
.split-panel,
.faq-list details,
.toc-card,
.cta-card,
.article-content,
.not-found-card,
.search-panel,
.article-single {
  border-radius: var(--radius-lg);
}

.feature-card,
.content-card,
.listing-card,
.seo-list article {
  padding: 1.4rem;
}

.content-card h3,
.listing-card h2 {
  margin-top: 0.65rem;
}

.content-card p,
.listing-card p,
.seo-list p,
.feature-card p,
.split-panel p,
.faq-list p {
  margin: 0.75rem 0 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.25rem 0.8rem;
  border-radius: 999px;
  background: rgba(15, 98, 254, 0.1);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
}

.split-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.6rem 1.8rem;
}

.seo-list article {
  min-height: 100%;
}

.faq-shell {
  display: grid;
  gap: 1.3rem;
}

.faq-list {
  display: grid;
  gap: 0.8rem;
}

.faq-list details {
  padding: 1.3rem 1.4rem;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list details[open] {
  border-color: var(--line-strong);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr auto;
  gap: 1rem;
  align-items: end;
  padding: 2rem 0 3rem;
}

.footer-links {
  display: grid;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--text-soft);
}

.footer-note {
  margin: 0;
  justify-self: end;
  color: var(--text-faint);
  font-size: 0.92rem;
}

.page-main {
  padding-bottom: 2rem;
}

.search-panel {
  padding: 1.4rem;
}

.search-helper,
.listing-count {
  margin: 0.85rem 0 0;
  color: var(--text-soft);
}

.search-panel input {
  width: 100%;
  margin-top: 0.55rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.7);
  outline: none;
}

.search-panel input:focus {
  border-color: rgba(37, 99, 235, 0.32);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.filter-pill {
  padding: 0.68rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  color: var(--text-soft);
  cursor: pointer;
}

.filter-pill.is-active {
  background: rgba(15, 98, 254, 0.12);
  border-color: rgba(15, 98, 254, 0.18);
  color: var(--accent);
}

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

.listing-summary {
  margin-bottom: 1rem;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1rem;
}

.listing-actions {
  display: flex;
  justify-content: center;
  margin-top: 1.15rem;
}

.archive-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
  margin-top: 1rem;
}

.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.8rem;
  min-height: 2.8rem;
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--text-soft);
}

.page-link.is-current {
  background: rgba(15, 98, 254, 0.12);
  border-color: rgba(15, 98, 254, 0.18);
  color: var(--accent);
  font-weight: 700;
}

.empty-state {
  margin-top: 1rem;
  padding: 1rem 1.2rem;
  border-radius: var(--radius-md);
}

.is-hidden {
  display: none !important;
}

.article-hero {
  max-width: 54rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.2rem;
  color: var(--text-faint);
  font-size: 0.92rem;
}

.prose-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18.5rem;
  gap: 1rem;
  align-items: start;
}

.article-content,
.article-single {
  padding: 1.7rem;
}

.article-content h2,
.article-single h2 {
  margin-top: 2rem;
}

.article-content h2:first-of-type,
.article-single h2:first-of-type {
  margin-top: 0;
}

.article-content h3 {
  margin-top: 1.2rem;
}

.article-content h2#references {
  margin-top: 2.3rem;
}

.article-content p,
.article-content ul,
.article-content ol,
.article-single p,
.article-single ul {
  margin: 0.95rem 0 0;
}

.reference-list {
  display: grid;
  gap: 0.9rem;
  padding: 0;
  list-style: none;
}

.snippet-list {
  display: grid;
  gap: 1rem;
}

.snippet-item {
  padding: 1rem 1.05rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(247, 248, 252, 0.92);
}

.snippet-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}

.snippet-head h3 {
  margin: 0;
}

.snippet-type {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0 0.7rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.08);
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

.snippet-note {
  margin: 0.6rem 0 0;
  color: var(--text-soft);
}

.snippet-item pre {
  margin: 0.9rem 0 0;
  padding: 0.95rem 1rem;
  overflow-x: auto;
  border-radius: var(--radius-sm);
  background: #0f172a;
  color: #e2e8f0;
}

.snippet-item code {
  font-family: "SFMono-Regular", "SF Mono", ui-monospace, monospace;
  font-size: 0.87rem;
  line-height: 1.55;
}

.reference-item {
  padding: 1rem 1.05rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.reference-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
}

.reference-head a {
  color: var(--accent);
  font-weight: 700;
}

.reference-type {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0 0.7rem;
  border-radius: 999px;
  background: rgba(15, 98, 254, 0.08);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
}

.reference-note,
.reference-url {
  margin: 0.55rem 0 0;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.reference-url {
  font-family: "SFMono-Regular", "SF Mono", ui-monospace, monospace;
  font-size: 0.8rem;
  word-break: break-all;
}

.article-content ul,
.article-single ul {
  padding-left: 1.2rem;
}

.article-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(15, 98, 254, 0.1), rgba(255, 255, 255, 0.82));
  border: 1px solid rgba(15, 98, 254, 0.14);
}

.article-banner-copy {
  display: grid;
  gap: 0.28rem;
  flex: 1 1 320px;
}

.banner-kicker {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.article-banner p {
  margin: 0;
  color: var(--text);
  font-weight: 700;
}

.article-banner a {
  color: var(--accent);
  font-weight: 700;
}

.article-sidebar {
  display: grid;
  gap: 1rem;
  position: sticky;
  top: 6.3rem;
}

.toc-card,
.cta-card {
  padding: 1.3rem;
}

.toc-list {
  display: grid;
  gap: 0.7rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.toc-list a {
  color: var(--text-soft);
}

.cta-card h3 {
  margin-top: 0.55rem;
}

.not-found {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem 0;
}

.not-found-card {
  max-width: 40rem;
  padding: 2rem;
  text-align: center;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .hero-grid,
  .subhero-grid,
  .prose-grid,
  .footer-grid,
  .split-panel {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .card-grid,
  .seo-list,
  .listing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split-panel {
    align-items: flex-start;
  }

  .article-sidebar {
    position: static;
  }
}

@media (max-width: 760px) {
  .site-header {
    padding-top: 0.75rem;
  }

  .nav-wrap {
    border-radius: 28px;
    align-items: center;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.35rem;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    text-align: center;
  }

  .hero,
  .subhero {
    padding-top: 2.75rem;
  }

  .feature-grid,
  .card-grid,
  .seo-list,
  .listing-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .article-hero {
    padding-top: 1rem;
  }

  h1 {
    max-width: none;
  }

  .hero-panel,
  .article-content,
  .article-single {
    overflow: hidden;
  }

  .article-content,
  .article-single,
  .feature-card,
  .content-card,
  .listing-card,
  .seo-list article,
  .search-panel,
  .toc-card,
  .cta-card,
  .not-found-card,
  .split-panel,
  .faq-list details {
    padding: 1.2rem;
  }

  .footer-note {
    justify-self: start;
  }
}