:root {
  --ink: #17202a;
  --muted: #5b6673;
  --paper: #fffdf8;
  --surface: #ffffff;
  --line: #dfe5ea;
  --accent: #0d6b5d;
  --accent-dark: #084b42;
  --warm: #f1a24b;
  --soft: #e9f4f1;
  --code: #f4f6f8;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 0%, rgba(241, 162, 75, 0.13), transparent 28rem),
    var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  font-size: 17px;
  line-height: 1.75;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 1000;
  padding: 0.65rem 1rem;
  color: white;
  background: var(--accent-dark);
}

.shell {
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(23, 32, 42, 0.09);
  background: rgba(255, 253, 248, 0.94);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 72px;
}

.site-brand {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.3rem;
}

.site-nav a {
  padding: 0.45rem 0.65rem;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
  border-radius: 0.45rem;
}

.site-nav a:hover {
  color: var(--accent-dark);
  background: var(--soft);
}

.site-main {
  min-height: 65vh;
  padding: 4.5rem 0 5rem;
}

.content {
  width: min(100%, 850px);
  margin: 0 auto;
}

.home-hero,
.page-hero {
  padding: 2.5rem 0 3.5rem;
}

.home-hero {
  width: min(100%, 920px);
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h1,
h2,
h3,
h4 {
  color: var(--ink);
  line-height: 1.25;
  letter-spacing: -0.025em;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.25rem, 6vw, 4.7rem);
}

h2 {
  margin-top: 2.4rem;
  font-size: clamp(1.55rem, 3vw, 2.2rem);
}

h3 {
  margin-top: 1.9rem;
  font-size: 1.35rem;
}

.lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
}

.proof-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.8rem 0 0;
  padding: 0;
  list-style: none;
}

.proof-line li {
  padding: 0.35rem 0.75rem;
  color: var(--accent-dark);
  background: var(--soft);
  border: 1px solid #cce2dc;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 650;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0 4rem;
}

.section-card,
.post-card,
.workflow-card,
.empty-state {
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: 0 12px 30px rgba(23, 32, 42, 0.04);
}

.section-card {
  display: flex;
  flex-direction: column;
  min-height: 230px;
  color: inherit;
  text-decoration: none;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.section-card:hover {
  color: inherit;
  transform: translateY(-3px);
  box-shadow: 0 16px 34px rgba(23, 32, 42, 0.09);
}

.section-icon {
  font-size: 1.7rem;
}

.section-card h2 {
  margin: 0.7rem 0;
  font-size: 1.35rem;
}

.section-card p {
  margin: 0;
  color: var(--muted);
}

.section-card .text-link {
  margin-top: auto;
  padding-top: 1rem;
}

.text-link {
  color: var(--accent-dark);
  font-weight: 750;
  text-decoration: none;
}

.workflow-card {
  margin: 2rem 0 4rem;
  border-left: 5px solid var(--warm);
}

.workflow-card h2 {
  margin-top: 0;
}

.workflow-lanes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.workflow-lanes div {
  padding: 1rem;
  background: #faf9f5;
  border-radius: 0.65rem;
}

.workflow-lanes h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.workflow-lanes p {
  margin: 0;
  color: var(--muted);
}

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

.post-card h2 {
  margin: 0.35rem 0 0.6rem;
  font-size: 1.35rem;
}

.post-card h2 a {
  color: var(--ink);
  text-decoration: none;
}

.post-card p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.card-meta,
.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.post-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.post-header h1 {
  font-size: clamp(2rem, 5vw, 3.7rem);
}

.post-content {
  overflow-wrap: anywhere;
}

.post-content > h1:first-child {
  display: none;
}

.post-content h2 {
  padding-top: 0.7rem;
}

.post-content blockquote {
  margin: 2rem 0;
  padding: 0.8rem 1.2rem;
  color: var(--muted);
  background: var(--soft);
  border-left: 4px solid var(--accent);
}

code {
  padding: 0.12rem 0.35rem;
  background: var(--code);
  border-radius: 0.3rem;
  font-size: 0.9em;
}

pre {
  max-width: 100%;
  padding: 1rem;
  overflow-x: auto;
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  line-height: 1.5;
}

pre code {
  padding: 0;
}

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

th,
td {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line);
  text-align: left;
}

.editorial-note {
  margin: 1.4rem 0 0;
  padding: 0.85rem 1rem;
  color: var(--muted);
  background: #faf9f5;
  border-radius: 0.6rem;
  font-size: 0.9rem;
}

.legacy-warning {
  margin: 1.4rem 0 0;
  padding: 1rem 1.1rem;
  color: #6d4611;
  background: #fff7e9;
  border: 1px solid #f0d5a7;
  border-radius: 0.65rem;
  font-size: 0.9rem;
}

.legacy-warning strong {
  display: block;
  margin-bottom: 0.2rem;
}

.section-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.section-nav a {
  padding: 0.6rem 0.9rem;
  color: var(--accent-dark);
  background: var(--soft);
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.archive-note {
  margin-bottom: 2rem;
  padding: 1rem 1.2rem;
  color: var(--muted);
  background: #fff7e9;
  border: 1px solid #f0d5a7;
  border-radius: 0.7rem;
}

.site-footer {
  padding: 2.2rem 0 3rem;
  color: var(--muted);
  background: #f5f3ed;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 820px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 1rem 0;
  }

  .site-header {
    position: static;
  }

  .section-grid,
  .workflow-lanes {
    grid-template-columns: 1fr;
  }

  .site-main {
    padding-top: 2.5rem;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 16px;
  }

  .shell {
    width: min(calc(100% - 1.2rem), var(--max));
  }

  .site-nav {
    gap: 0.1rem;
  }

  .site-nav a {
    padding: 0.35rem 0.45rem;
    font-size: 0.84rem;
  }
}