:root {
  --bg: #f6f3ec;
  --surface: #fffdf8;
  --ink: #1d1f24;
  --ink-soft: #4a4e57;
  --muted: #7b7f88;
  --line: #e2ddd1;
  --accent: #2f4b7a;
  --accent-soft: #e6ebf3;
  --warm: #b5642c;
  --warm-soft: #f5e7da;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161b;
    --surface: #1b1e24;
    --ink: #ebe7de;
    --ink-soft: #b9b6ae;
    --muted: #868a93;
    --line: #2b2f37;
    --accent: #9db4dd;
    --accent-soft: #232b3a;
    --warm: #e0a072;
    --warm-soft: #33261c;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 600 20px var(--serif);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  box-shadow: 0 0 0 1px var(--line);
}

nav {
  display: flex;
  gap: 28px;
}

nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 500;
}

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

/* Hero */
.hero {
  padding: 112px 24px 96px;
}

.eyebrow {
  font: 400 13px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warm);
  margin: 0 0 20px;
}

h1 {
  font: 500 clamp(36px, 6vw, 64px)/1.08 var(--serif);
  letter-spacing: -0.025em;
  margin: 0 0 28px;
  max-width: 16ch;
}

h1 em {
  font-style: italic;
  color: var(--accent);
}

.lede {
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0 0 36px;
}

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

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: transform .15s ease, border-color .15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

/* Sections */
.section {
  padding: 72px 24px;
  border-top: 1px solid var(--line);
}

.section-title {
  font: 500 32px/1.2 var(--serif);
  letter-spacing: -0.015em;
  margin: 0 0 36px;
}

.section-intro {
  color: var(--ink-soft);
  margin: -20px 0 32px;
}

/* Principles */
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.principle {
  background: var(--surface);
  padding: 28px;
}

.principle .num {
  font: 400 12px var(--mono);
  color: var(--warm);
}

.principle h3 {
  font: 500 20px var(--serif);
  margin: 8px 0 8px;
}

.principle p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15.5px;
}

/* Projects */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.project {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.project-head h3 {
  font: 500 28px var(--serif);
  margin: 10px 0 12px;
  letter-spacing: -0.01em;
}

.gloss {
  font: 400 18px var(--sans);
  color: var(--muted);
  margin-left: 6px;
}

.tag {
  font: 400 12px var(--mono);
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

.project p {
  color: var(--ink-soft);
  margin: 0 0 24px;
  flex: 1;
}

.link {
  font: 400 14px var(--mono);
  color: var(--accent);
  text-decoration: none;
}

.link:hover {
  text-decoration: underline;
}

.link.muted {
  color: var(--muted);
}

.note {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--warm);
  color: var(--ink-soft);
  font-size: 15px;
  max-width: 70ch;
}

/* Writing */
.entries {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.entry a {
  display: block;
  text-decoration: none;
  padding: 26px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color .15s ease, transform .15s ease;
}

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

.entry-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  font: 400 12px var(--mono);
  color: var(--muted);
}

.kind {
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--warm-soft);
  color: var(--warm);
}

.entry[data-kind="doc"] .kind,
.entry[data-kind="talk"] .kind {
  background: var(--accent-soft);
  color: var(--accent);
}

.entry h3 {
  font: 500 23px/1.3 var(--serif);
  margin: 12px 0 6px;
  letter-spacing: -0.01em;
}

.entry p {
  margin: 0 0 12px;
  color: var(--ink-soft);
  font-size: 15.5px;
  max-width: 70ch;
}

.read {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 56px;
  font-size: 14px;
}

.site-footer p {
  margin: 4px 0;
}

.site-footer a {
  color: var(--ink-soft);
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .wrap {
    padding: 0 16px;
  }

  .hero {
    padding: 72px 16px 64px;
  }

  .section {
    padding: 56px 16px;
  }

  nav {
    gap: 18px;
  }

  .projects {
    grid-template-columns: 1fr;
  }

  .principles {
    grid-template-columns: 1fr;
  }
}