:root {
  --bg: #f3f0e8;
  --surface: rgba(255, 252, 245, 0.9);
  --surface-strong: #fffdf8;
  --text: #1e1f1b;
  --muted: #666458;
  --line: rgba(30, 31, 27, 0.14);
  --accent: #1f4d3b;
  --accent-soft: rgba(31, 77, 59, 0.12);
  --shadow: 0 24px 60px rgba(28, 31, 24, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(31, 77, 59, 0.08), transparent 32%),
    linear-gradient(180deg, #f7f4ec 0%, var(--bg) 100%);
  color: var(--text);
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration-color: rgba(31, 77, 59, 0.45);
  text-underline-offset: 0.18em;
}

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

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

.shell {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: 48px;
  padding: 32px 0 56px;
}

.shell-sidebar {
  position: sticky;
  top: 24px;
  align-self: start;
}

.shell-sidebar__inner,
.shell-main {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.shell-sidebar__inner {
  padding: 28px 24px;
}

.brand {
  display: block;
  color: inherit;
  text-decoration: none;
  margin-bottom: 36px;
}

.brand__eyebrow,
.hero__eyebrow,
.article-header__eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 0.78rem;
  font-family: "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.brand__title {
  display: block;
  font-size: 1.8rem;
  line-height: 1.05;
  margin-bottom: 12px;
}

.brand__description {
  display: block;
  color: var(--muted);
  font-size: 0.98rem;
}

.sidebar-nav,
.sidebar-links {
  display: grid;
  gap: 10px;
}

.sidebar-nav {
  margin-bottom: 28px;
}

.sidebar-nav a,
.sidebar-links a {
  padding: 11px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.95rem;
}

.sidebar-nav a[aria-current="page"] {
  color: var(--accent);
}

.shell-main {
  padding: 44px clamp(22px, 4vw, 58px) 56px;
}

.hero {
  padding-bottom: 18px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.hero h1,
.article-header h1 {
  margin: 0;
  font-size: clamp(2.3rem, 5vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.hero__lead,
.article-header__lead {
  max-width: 42rem;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.post-feed {
  display: grid;
  gap: 18px;
}

.post-card {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.post-card:first-child {
  border-top: 0;
  padding-top: 8px;
}

.post-card__meta,
.article-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
}

.post-card h2 {
  margin: 10px 0 10px;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1.12;
}

.post-card h2 a {
  text-decoration: none;
}

.post-card p {
  margin: 0 0 14px;
  color: var(--muted);
}

.post-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.92rem;
  text-decoration: none;
}

.post-card__link::after {
  content: "→";
}

.article {
  max-width: 48rem;
}

.article-header {
  padding-bottom: 28px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.article-content {
  font-size: 1.06rem;
}

.article-content h2,
.article-content h3,
.article-content h4 {
  margin-top: 2.2em;
  margin-bottom: 0.55em;
  line-height: 1.15;
}

.article-content p,
.article-content ul,
.article-content ol,
.article-content blockquote,
.article-content figure {
  margin: 1.1em 0;
}

.article-content ul,
.article-content ol {
  padding-left: 1.3em;
}

.article-content li + li {
  margin-top: 0.45em;
}

.article-content blockquote {
  padding-left: 18px;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

.article-content code {
  padding: 0.12em 0.35em;
  background: rgba(30, 31, 27, 0.06);
  border-radius: 4px;
  font-size: 0.92em;
}

.article-content pre {
  overflow-x: auto;
  padding: 16px 18px;
  background: #20231f;
  color: #f3f0e8;
  border-radius: 12px;
}

.article-content pre code {
  padding: 0;
  background: none;
}

.article-content figure {
  margin-left: 0;
  margin-right: 0;
}

.article-content figcaption {
  color: var(--muted) !important;
  font-size: 0.92rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
}

.tag-list li {
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: var(--accent-soft);
  border-radius: 999px;
  color: var(--accent);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
}

@media (max-width: 920px) {
  .shell {
    grid-template-columns: 1fr;
    gap: 20px;
    width: min(960px, calc(100% - 24px));
    padding-top: 14px;
  }

  .shell-sidebar {
    position: static;
  }

  .shell-sidebar__inner,
  .shell-main {
    padding-left: 20px;
    padding-right: 20px;
  }

  .shell-main {
    padding-top: 30px;
  }
}

@media (max-width: 640px) {
  body {
    line-height: 1.6;
  }

  .shell-main {
    padding-bottom: 40px;
  }

  .hero h1,
  .article-header h1 {
    font-size: 2.2rem;
  }

  .article-content {
    font-size: 1rem;
  }
}