:root {
  color-scheme: dark;
  --bg: #06080d;
  --bg-2: #0a1118;
  --ink: #f5f7fb;
  --muted: #a8b3c2;
  --dim: #708094;
  --line: rgba(177, 197, 223, 0.18);
  --panel: rgba(15, 24, 34, 0.84);
  --panel-2: rgba(21, 34, 49, 0.78);
  --accent: #64f4c4;
  --accent-2: #8db7ff;
  --accent-3: #f7c86b;
  --code-bg: #05080d;
  --shadow: 0 28px 100px rgba(0, 0, 0, 0.45);
  --radius: 0.55rem;
  --radius-lg: 1.2rem;
  --content: 1180px;
  --article: 860px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f7fb;
  --bg-2: #e9eef7;
  --ink: #101823;
  --muted: #4e5e72;
  --dim: #748195;
  --line: rgba(19, 34, 52, 0.16);
  --panel: rgba(255, 255, 255, 0.86);
  --panel-2: rgba(238, 244, 251, 0.9);
  --accent: #087f68;
  --accent-2: #2b62c5;
  --accent-3: #9d6100;
  --code-bg: #101823;
  --shadow: 0 28px 90px rgba(24, 42, 67, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 6%, rgba(100, 244, 196, 0.16), transparent 28rem),
    radial-gradient(circle at 84% 10%, rgba(141, 183, 255, 0.14), transparent 30rem),
    linear-gradient(180deg, var(--bg-2), var(--bg) 34rem);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
}

body.is-search-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
}

a {
  color: inherit;
  text-decoration-color: color-mix(in srgb, var(--accent) 48%, transparent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent);
}

button,
input {
  font: inherit;
}

.skip-link {
  background: var(--ink);
  color: var(--bg);
  left: 1rem;
  padding: 0.75rem 1rem;
  position: absolute;
  top: -5rem;
  z-index: 20;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(22px);
}

.nav {
  align-items: center;
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(13rem, 1fr) auto auto;
  margin: 0 auto;
  max-width: var(--content);
  padding: 1rem 1.5rem;
}

.brand {
  align-items: center;
  display: flex;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-mark {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: var(--radius);
  color: #04100d;
  display: inline-grid;
  font-weight: 900;
  height: 2.25rem;
  place-items: center;
  width: 2.25rem;
}

.brand-sub {
  color: var(--muted);
  display: block;
  font-size: 0.82rem;
}

.nav-links,
.nav-actions,
.footer-links {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

.icon-button,
.primary-action,
.secondary-action {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: transform 160ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 160ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.icon-button {
  background: color-mix(in srgb, var(--panel) 76%, transparent);
  color: var(--ink);
  padding: 0.48rem 0.7rem;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  padding: 0.75rem 1rem;
}

.primary-action {
  background: var(--accent);
  color: #04100d;
  font-weight: 800;
}

.secondary-action {
  background: color-mix(in srgb, var(--panel) 76%, transparent);
  color: var(--ink);
}

.icon-button:hover,
.primary-action:hover,
.secondary-action:hover {
  border-color: color-mix(in srgb, var(--accent) 70%, transparent);
  transform: translateY(-1px);
}

.hero {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  margin: 0 auto;
  max-width: var(--content);
  padding: 5rem 1.5rem 3rem;
}

.hero-copy,
.signal-panel,
.post-card,
.topic,
.article-shell,
.note-panel {
  background: linear-gradient(145deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.hero-copy,
.signal-panel {
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 4vw, 2.5rem);
}

.eyebrow {
  color: var(--accent-3);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  letter-spacing: 0;
  line-height: 1.15;
}

h1 {
  font-size: clamp(3rem, 8vw, 7rem);
  margin: 0.75rem 0 0;
  max-width: 11ch;
}

.article-title {
  font-size: clamp(2.4rem, 6vw, 4.8rem);
  max-width: 13ch;
}

.hero-text {
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  margin: 1.5rem 0 0;
  max-width: 48rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.signal-panel {
  align-self: stretch;
  display: grid;
  gap: 1rem;
}

.metric {
  border-bottom: 1px solid var(--line);
  padding-bottom: 1rem;
}

.metric strong {
  display: block;
  font-size: 2.4rem;
  line-height: 1;
}

.metric span,
.post-meta,
.tagline {
  color: var(--muted);
}

.flow {
  display: grid;
  gap: 0.6rem;
}

.flow span {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  padding: 0.65rem 0.75rem;
}

.main {
  margin: 0 auto;
  max-width: var(--content);
  padding: 0 1.5rem 5rem;
}

.section-heading {
  align-items: end;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin: 1rem 0;
}

.section-heading h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  margin: 0;
}

.filter {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  min-width: min(100%, 18rem);
  padding: 0.7rem 0.85rem;
}

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

.post-card,
.topic {
  border-radius: var(--radius);
  min-height: 14rem;
  padding: 1.25rem;
  text-decoration: none;
}

.post-card {
  display: grid;
  gap: 0.75rem;
}

.post-card h3,
.topic h3 {
  font-size: 1.35rem;
  margin: 0;
}

.post-card p,
.topic p {
  color: var(--muted);
  margin: 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: color-mix(in srgb, var(--accent-2) 16%, transparent);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.78rem;
  padding: 0.24rem 0.55rem;
}

.article-shell {
  border-radius: var(--radius-lg);
  margin: 3rem auto 0;
  max-width: var(--article);
  padding: clamp(1.25rem, 4vw, 3rem);
}

.article-body {
  color: color-mix(in srgb, var(--ink) 90%, var(--muted));
  font-size: 1.05rem;
}

.article-body h2 {
  border-top: 1px solid var(--line);
  margin-top: 2.25rem;
  padding-top: 1.4rem;
}

.article-body img {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: block;
  height: auto;
  max-width: 100%;
}

.article-body table {
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
  width: 100%;
}

.article-body th,
.article-body td {
  border: 1px solid var(--line);
  padding: 0.65rem 0.75rem;
  text-align: left;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #f3fff9;
  overflow-x: auto;
  padding: 1rem;
  position: relative;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

:not(pre) > code {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  padding: 0.08rem 0.28rem;
}

.copy-button {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  cursor: pointer;
  position: absolute;
  right: 0.75rem;
  top: 0.75rem;
}

.note-panel {
  border-radius: var(--radius);
  margin-top: 1.5rem;
  padding: 1rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  margin-top: 4rem;
}

.search-shell {
  background: rgba(0, 0, 0, 0.58);
  display: flex;
  inset: 0;
  justify-content: center;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1.5rem;
  position: fixed;
  -webkit-overflow-scrolling: touch;
  z-index: 30;
}

.search-shell[hidden] {
  display: none;
}

.search-panel {
  background: linear-gradient(145deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  margin: 8vh 0 1.5rem;
  max-height: calc(100dvh - 3rem);
  max-width: 46rem;
  padding: 1.5rem;
  width: min(100%, 46rem);
  backdrop-filter: blur(22px);
}

.search-head {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.search-input {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  padding: 1rem;
  width: 100%;
}

.search-results {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 0.25rem;
}

.search-result {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  gap: 0.25rem;
  padding: 1rem;
  text-decoration: none;
}

.search-result span,
.search-result small,
.empty-state {
  color: var(--muted);
}

.footer-inner {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--content);
  padding: 1.5rem;
}

@media (max-width: 820px) {
  .nav {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 3rem;
  }

  h1 {
    font-size: clamp(2.7rem, 16vw, 5rem);
  }

  .post-grid,
  .topic-grid {
    grid-template-columns: 1fr;
  }

  .section-heading {
    align-items: stretch;
    flex-direction: column;
  }
}