:root {
  --brand-ink-950: #07111f;
  --brand-ink-900: #0d1b31;
  --brand-ink-800: #162742;
  --brand-ink-700: #29446d;
  --brand-ink-600: #3d5a80;
  --brand-ink-500: #5a7aa5;
  --brand-sky-500: #0ea5e9;
  --brand-sky-400: #38bdf8;
  --brand-sand-50: #fafbfd;
  --brand-sand-100: #f4f6fa;
  --brand-sand-200: #e8edf4;
  --brand-sand-300: #dae2ed;
  --brand-mint-500: #10b981;
  --brand-violet-500: #8b5cf6;
  --brand-amber-500: #f59e0b;
  --brand-shadow: 0 1px 2px rgba(7,17,31,0.04), 0 8px 24px rgba(7,17,31,0.06);
  --brand-radius-xl: 24px;
  --brand-radius-lg: 20px;
  --brand-radius-md: 16px;
  --brand-radius-sm: 12px;
  --brand-frame: min(1280px, calc(100% - 2rem));
  --brand-font: "Inter", "Sora", "Segoe UI", system-ui, sans-serif;
  --brand-font-display: "Sora", "Inter", "Segoe UI", system-ui, sans-serif;
}

.brand-shell {
  position: relative;
  margin: 0;
  background: linear-gradient(180deg, #f8fafd 0%, #f0f4f9 50%, #eaf0f7 100%);
  color: var(--brand-ink-950);
  font-family: var(--brand-font);
  -webkit-font-smoothing: antialiased;
}

.brand-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 60% 50% at 20% -10%, rgba(14,165,233,0.06), transparent),
    radial-gradient(ellipse 40% 40% at 80% 10%, rgba(139,92,246,0.04), transparent);
  pointer-events: none;
}

.brand-shell * {
  box-sizing: border-box;
}

.brand-shell ::selection {
  background: rgba(14, 165, 233, 0.15);
}

.brand-frame {
  margin-inline: auto;
  width: var(--brand-frame);
}

/* Header */
.brand-topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  padding: 0.75rem 0;
}

.brand-topbar-inner {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--brand-radius-lg);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 0 0 1px rgba(15,27,49,0.04), var(--brand-shadow);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
}

.brand-topbar-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand-wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--brand-ink-950);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  height: 2.5rem;
  width: 2.5rem;
  align-items: center;
  justify-content: center;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, var(--brand-sky-500), var(--brand-violet-500));
  color: white;
  font-size: 0.8rem;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(14,165,233,0.2);
}

.brand-nav,
.brand-subnav,
.brand-social,
.brand-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.brand-nav a,
.brand-subnav a,
.brand-social a,
.brand-footer a {
  text-decoration: none;
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.brand-nav a {
  border-radius: 0.75rem;
  padding: 0.5rem 0.75rem;
  color: var(--brand-ink-600);
  font-size: 0.875rem;
  font-weight: 500;
}

.brand-nav a:hover {
  color: var(--brand-ink-950);
  background: rgba(14,165,233,0.04);
}

.brand-subnav a,
.brand-social a {
  border: 1px solid rgba(22,39,66,0.06);
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.9);
  padding: 0.4rem 0.65rem;
  color: var(--brand-ink-600);
  font-size: 0.75rem;
  font-weight: 600;
}

.brand-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 9999px;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.brand-button-primary {
  background: linear-gradient(135deg, var(--brand-ink-900), var(--brand-ink-800));
  color: white;
  box-shadow: 0 1px 2px rgba(7,17,31,0.12), 0 4px 12px rgba(7,17,31,0.08);
}

.brand-button-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(7,17,31,0.16);
}

.brand-button-secondary {
  border: 1px solid rgba(22,39,66,0.1);
  background: rgba(255, 255, 255, 0.9);
  color: var(--brand-ink-800);
}

.brand-button-secondary:hover {
  transform: translateY(-2px);
  border-color: rgba(22,39,66,0.2);
}

/* Content */
.brand-hero,
.brand-panel,
.brand-article-content {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--brand-radius-xl);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--brand-shadow);
  backdrop-filter: blur(20px);
}

.brand-hero {
  padding: 2.5rem;
}

.brand-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  border-radius: 9999px;
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(14,165,233,0.08);
  color: var(--brand-sky-500);
  border: 1px solid rgba(14,165,233,0.15);
}

.brand-title {
  margin: 1.25rem 0 0;
  color: var(--brand-ink-950);
  font-family: var(--brand-font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.brand-lead {
  margin: 1rem 0 0;
  max-width: 48rem;
  color: var(--brand-ink-600);
  font-size: 1rem;
  line-height: 1.8;
}

.brand-section {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
}

.brand-section-head {
  margin-bottom: 1.5rem;
  max-width: 48rem;
}

.brand-section-title {
  margin: 0;
  color: var(--brand-ink-950);
  font-family: var(--brand-font-display);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.brand-section-copy {
  margin-top: 0.75rem;
  color: var(--brand-ink-600);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.brand-card,
.brand-post-card {
  display: block;
  border: 1px solid rgba(22,39,66,0.06);
  border-radius: var(--brand-radius-md);
  background: white;
  padding: 1.5rem;
  color: inherit;
  text-decoration: none;
  box-shadow: 0 1px 2px rgba(7,17,31,0.03), 0 4px 12px rgba(7,17,31,0.03);
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.brand-card:hover,
.brand-post-card:hover {
  transform: translateY(-3px);
  border-color: rgba(14,165,233,0.15);
  box-shadow: 0 8px 24px rgba(7,17,31,0.06);
}

.brand-card h2,
.brand-card h3,
.brand-post-card h3 {
  margin: 0;
  color: var(--brand-ink-950);
  font-weight: 700;
}

.brand-post-card:hover h3 {
  color: var(--brand-sky-500);
}

.brand-card p,
.brand-card li,
.brand-post-card p {
  color: var(--brand-ink-600);
  line-height: 1.75;
}

.brand-grid,
.brand-post-list,
.brand-sidebar {
  display: grid;
  gap: 1rem;
}

.brand-grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.brand-grid-3,
.brand-post-list {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.brand-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.brand-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  border-radius: 9999px;
  border: 1px solid rgba(22,39,66,0.06);
  background: var(--brand-sand-50);
  padding: 0.375rem 0.75rem;
  color: var(--brand-ink-600);
  font-size: 0.75rem;
  font-weight: 600;
}

.brand-post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
  color: var(--brand-ink-500);
  font-size: 0.75rem;
  font-weight: 600;
}

.brand-article {
  display: grid;
  gap: 1.25rem;
}

.brand-article-content {
  padding: 2rem;
}

.brand-article-content h1,
.brand-article-content h2,
.brand-article-content h3 {
  color: var(--brand-ink-950);
  font-family: var(--brand-font-display);
  letter-spacing: -0.01em;
}

.brand-article-content p,
.brand-article-content li {
  color: var(--brand-ink-600);
  line-height: 1.85;
}

/* Footer */
.brand-footer {
  margin-top: 2rem;
  padding-bottom: 1.5rem;
}

.brand-footer-grid {
  display: grid;
  gap: 1.5rem;
  padding: 2rem;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--brand-radius-xl);
  background: rgba(255,255,255,0.72);
  box-shadow: var(--brand-shadow);
  backdrop-filter: blur(20px);
}

.brand-footer-title {
  color: var(--brand-ink-500);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-footer-links {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.brand-footer a {
  color: var(--brand-ink-600);
  font-size: 0.875rem;
}

.brand-footer a:hover {
  color: var(--brand-ink-950);
}

@media (min-width: 960px) {
  .brand-frame {
    width: min(1320px, calc(100% - 4rem));
  }

  .brand-article {
    grid-template-columns: minmax(0, 1.35fr) minmax(290px, 0.65fr);
  }

  .brand-footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .brand-topbar-inner,
  .brand-hero,
  .brand-article-content {
    padding: 1.25rem;
  }
}