:root {
  --bg: #f5f0e8;
  --bg-accent: #fffaf2;
  --surface: rgba(255, 255, 255, 0.8);
  --surface-strong: rgba(255, 255, 255, 0.95);
  --border: rgba(18, 25, 41, 0.09);
  --border-strong: rgba(18, 25, 41, 0.16);
  --ink-900: #172033;
  --ink-700: #41506b;
  --ink-500: #62718d;
  --orange: #f28a3a;
  --orange-deep: #db7730;
  --blue: #6c7cf6;
  --blue-deep: #5163e7;
  --shadow: 0 30px 80px rgba(38, 35, 29, 0.12);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top left, rgba(242, 138, 58, 0.16), transparent 32%),
    radial-gradient(circle at top right, rgba(108, 124, 246, 0.16), transparent 30%),
    linear-gradient(180deg, #fffaf4 0%, #f7f0e7 42%, #f3ecdf 100%);
  color: var(--ink-900);
  font-family: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

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

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

.page-shell::before,
.page-shell::after {
  content: "";
  position: fixed;
  z-index: 0;
  border-radius: 999px;
  filter: blur(20px);
  pointer-events: none;
}

.page-shell::before {
  width: 360px;
  height: 360px;
  top: -120px;
  left: -80px;
  background: rgba(242, 138, 58, 0.16);
}

.page-shell::after {
  width: 320px;
  height: 320px;
  right: -70px;
  top: 120px;
  background: rgba(108, 124, 246, 0.16);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(250, 245, 237, 0.78);
  border-bottom: 1px solid rgba(18, 25, 41, 0.06);
}

.topbar-inner,
.hero,
.content-grid,
.footer {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--ink-900);
  font-family: "Space Grotesk", "Instrument Sans", sans-serif;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 14px;
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-copy small {
  font-family: "Instrument Sans", sans-serif;
  font-size: 0.75rem;
  color: var(--ink-500);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.nav-links a {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--ink-700);
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links .is-active {
  color: var(--ink-900);
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.66);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(300px, 0.95fr);
  gap: 28px;
  padding: 52px 0 28px;
}

.hero-card,
.hero-meta,
.toc-card,
.article-card,
.footer-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 34px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--orange-deep);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.hero-card h1 {
  margin: 0;
  font-family: "Space Grotesk", "Instrument Sans", sans-serif;
  font-size: clamp(2.15rem, 5vw, 4.1rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.hero-card p {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 1rem;
  color: var(--ink-700);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-badges span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(18, 25, 41, 0.08);
  color: var(--ink-700);
  font-size: 0.92rem;
}

.hero-meta {
  display: grid;
  gap: 18px;
  align-content: start;
  padding: 26px;
}

.meta-row h2,
.meta-row h3,
.meta-row p {
  margin: 0;
}

.meta-row h2,
.meta-row h3 {
  font-family: "Space Grotesk", "Instrument Sans", sans-serif;
  letter-spacing: -0.03em;
}

.meta-row p,
.meta-row li {
  color: var(--ink-700);
}

.meta-row ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(242, 138, 58, 0.12), rgba(108, 124, 246, 0.12));
  color: var(--ink-900);
  font-size: 0.92rem;
  font-weight: 600;
}

.content-grid {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 24px;
  padding-bottom: 34px;
}

.toc-card {
  position: sticky;
  top: 96px;
  padding: 26px 22px;
}

.toc-card h2 {
  margin: 0 0 14px;
  font-family: "Space Grotesk", "Instrument Sans", sans-serif;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}

.toc-card ol {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.toc-card li,
.toc-card p {
  color: var(--ink-700);
}

.toc-card a {
  text-decoration: none;
}

.toc-card a:hover,
.toc-card a:focus-visible {
  color: var(--blue-deep);
}

.toc-note {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(18, 25, 41, 0.08);
  font-size: 0.92rem;
}

.article-card {
  padding: 28px;
}

.article-card section + section {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid rgba(18, 25, 41, 0.08);
}

.article-card h2 {
  margin: 0 0 10px;
  font-family: "Space Grotesk", "Instrument Sans", sans-serif;
  font-size: 1.45rem;
  letter-spacing: -0.04em;
}

.article-card h3 {
  margin: 18px 0 8px;
  font-family: "Space Grotesk", "Instrument Sans", sans-serif;
  font-size: 1.04rem;
  letter-spacing: -0.02em;
}

.article-card p,
.article-card li {
  color: var(--ink-700);
  font-size: 0.98rem;
}

.article-card ul {
  margin: 12px 0 0;
  padding-left: 20px;
}

.article-card strong {
  color: var(--ink-900);
}

.callout {
  margin-top: 16px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(242, 138, 58, 0.18);
  background: linear-gradient(135deg, rgba(242, 138, 58, 0.1), rgba(108, 124, 246, 0.08));
}

.callout strong {
  display: block;
  margin-bottom: 6px;
}

.footer {
  padding: 0 0 48px;
}

.footer-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
}

.footer-card p {
  margin: 0;
  color: var(--ink-700);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links a {
  text-decoration: none;
  color: var(--ink-700);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--blue-deep);
}

@media (max-width: 960px) {
  .hero,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .toc-card {
    position: static;
  }
}

@media (max-width: 720px) {
  .topbar-inner {
    min-height: auto;
    padding: 14px 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 34px;
  }

  .hero-card,
  .hero-meta,
  .article-card,
  .toc-card,
  .footer-card {
    padding: 22px;
    border-radius: 24px;
  }
}