:root {
  color-scheme: dark;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.75;
  --bg: #09090b;
  --surface: #18181b;
  --surface-strong: #27272a;
  --border: #3f3f46;
  --text: #fafafa;
  --muted: #a1a1aa;
  --accent: #10b981;
  --accent-soft: rgba(16, 185, 129, 0.12);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  --radius: 16px;
  --container: min(1200px, 100% - 2rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

button,
a {
  font: inherit;
}

/* ── Layout ── */

.wrapper {
  width: var(--container);
  margin: 0 auto;
  padding: 2.5rem 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(9, 9, 11, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.site-header .wrapper {
  padding: 0.875rem 0;
}

.site-footer .wrapper {
  padding: 0;
}

.site-header-inner,
.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  color: var(--accent);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.25rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-nav a,
.footer-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s;
}

.site-nav a:hover,
.footer-nav a:hover,
.site-lang a:hover {
  color: var(--text);
}

.site-lang {
  display: flex;
  gap: 0.5rem;
}

.site-lang a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.85rem;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.site-lang a.active,
.site-lang a:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--muted);
}

/* ── Hero ── */

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 9rem 0 10rem;
  background: var(--bg);
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.hero-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(63, 63, 70, 0.8) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.hero-panel::after {
  content: '';
  position: absolute;
  top: -40%;
  left: -10%;
  width: 75%;
  height: 130%;
  background: radial-gradient(ellipse, rgba(16, 185, 129, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.hero-panel-sm {
  padding: 1.25rem 0 1.5rem;
}

.hero-panel-sm + .home-section {
  padding-top: 1.25rem;
}

.hero-panel-sm .wrapper {
  padding-top: 0;
  padding-bottom: 0;
}

.hero-panel-sm .hero-copy h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.15;
}

.hero-panel-sm .hero-copy-text {
  margin-top: 0.75rem;
}

.hero-panel-sm .hero-actions {
  margin-top: 1.25rem;
}

.hero-glow-right {
  position: absolute;
  top: 20%;
  right: -5%;
  width: 40%;
  height: 70%;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.06) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.hero-copy h1 {
  font-size: clamp(3.2rem, 8vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
  margin: 0.35rem 0 0.75rem;
  font-weight: 800;
}

.hero-copy-text {
  max-width: 56ch;
  font-size: 1.15rem;
  color: var(--muted);
  margin-top: 1.5rem;
  line-height: 1.85;
}

.hero-actions {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

/* ── Home Sections rhythm ── */

.home-section {
  padding: 6rem 0;
  border-bottom: 1px solid var(--border);
}

.home-section:last-child {
  border-bottom: none;
  padding-bottom: 8rem;
}

/* ── Buttons ── */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
  cursor: pointer;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
}

.button-primary:hover {
  opacity: 0.88;
}

.button-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.button-secondary:hover {
  border-color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
}

/* ── Section Panels ── */

.section-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
}

.section-offset {
  margin-top: 2rem;
}

.section-header {
  margin-bottom: 2rem;
}

/* ── Home Sections ── */

.home-sections {
  display: flex;
  flex-direction: column;
}

.home-section-header {
  margin-bottom: 2.5rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0.5rem 0 0;
  color: var(--text);
}

.section-subtitle {
  margin: 0.75rem 0 0;
  color: var(--muted);
  max-width: 58ch;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ── Feature Grid ── */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.feature-item {
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.feature-item:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 1.1rem;
}

.feature-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.feature-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.7;
}

/* ── Promo Card ── */

.promo-card {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-top: 2rem;
  padding: 2rem;
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.promo-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(16, 185, 129, 0.18);
}

.promo-card-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--accent);
  color: #fff;
}

.promo-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.promo-card-eyebrow {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.promo-card-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
}

.promo-card-desc {
  margin: 0.25rem 0 0.5rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.promo-card-cta {
  font-size: 0.93rem;
  font-weight: 600;
  color: var(--accent);
}

@media (max-width: 600px) {
  .promo-card {
    flex-direction: column;
  }
}

/* ── Cards ── */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(16, 185, 129, 0.35);
}

.card-strong {
  background: var(--surface-strong);
}

.card-link {
  color: inherit;
  text-decoration: none;
}

.card-link h2,
.card-link h3 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--text);
}

.card-copy {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.75;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--muted);
  align-items: center;
}

.badge {
  display: inline-flex;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.8rem;
}

/* ── Card cover / body ── */

.card-cover-link {
  display: block;
  margin: -1.5rem -1.5rem 1.25rem;
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
}

.card-cover {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.card-body {
  display: flex;
  flex-direction: column;
}

/* ── Post cover hero (image + title overlay) ── */

.post-cover-hero {
  position: relative;
  width: 70%;
  margin: 0 0 2.5rem;
  border-radius: var(--radius);
  overflow: hidden;
}

.post-cover-img {
  display: block;
  width: 100%;
  height: 260px;
  object-fit: cover;
  object-position: center;
}

.post-cover-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.25rem 1.5rem;
  background: linear-gradient(to top, rgba(0,0,0,0.78) 0%, rgba(0,0,0,0.28) 60%, transparent 100%);
}

.post-cover-title h1 {
  margin: 0;
  color: #fff;
  font-size: clamp(1rem, 2.2vw, 1.5rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  text-shadow: 0 1px 6px rgba(0,0,0,0.6);
}

.prose-title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 2rem;
  max-width: 840px;
}

/* ── Eyebrow ── */

.eyebrow {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-copy {
  max-width: 70ch;
  margin: 0.75rem 0 0;
  color: var(--muted);
}

/* ── Prose ── */

.prose {
  max-width: 840px;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  color: var(--text);
  margin-top: 2.5rem;
  letter-spacing: -0.02em;
}

.prose h1 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  line-height: 1.2;
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote,
.prose pre,
.prose table {
  margin-top: 1.25rem;
}

.prose p {
  color: var(--muted);
}

.prose a {
  color: var(--accent);
  text-decoration: underline;
}

.prose img {
  max-width: 100%;
  border-radius: 1rem;
}

.prose blockquote {
  margin: 1.5rem 0;
  padding: 1.15rem 1.2rem;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  color: var(--text);
  border-radius: 0 0.5rem 0.5rem 0;
}

.prose pre,
.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
}

.prose pre {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 1.25rem;
  border-radius: 0.75rem;
  overflow-x: auto;
  position: relative;
}

.prose pre code.hljs {
  background: transparent;
  padding: 0;
  border-radius: 0;
  color: inherit;
  font-size: 0.875rem;
}

.prose code {
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.15rem 0.35rem;
  border-radius: 0.35rem;
}

.copy-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  background: var(--surface-strong);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
}

.prose pre:hover .copy-btn {
  opacity: 1;
}


/* ── Post Navigation ── */

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.post-nav-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  text-decoration: none;
  color: var(--text);
  transition: color 0.15s;
}

.post-nav-prev {
  text-align: right;
  align-items: flex-end;
}

.post-nav-next {
  text-align: left;
  align-items: flex-start;
}

.post-nav-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.post-nav-title {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.45;
}

.post-nav-item:hover .post-nav-title {
  color: var(--accent);
}

/* ── Responsive ── */

@media (max-width: 800px) {
  .site-header-inner,
  .site-footer-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav,
  .footer-nav,
  .site-lang {
    justify-content: center;
  }

  .wrapper {
    padding: 1.5rem 1rem;
  }

  .hero-panel {
    padding: 5rem 0 6rem;
  }

  .home-section {
    padding: 4rem 0;
  }

  .post-cover-hero {
    width: 100%;
  }
}