:root {
  --bg: #f4efe7;
  --panel: rgba(255, 251, 245, 0.94);
  --ink: #171410;
  --muted: #635a4e;
  --line: rgba(23, 20, 16, 0.12);
  --accent: #973e2c;
  --shadow: 0 24px 56px rgba(52, 31, 18, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(151, 62, 44, 0.14), transparent 30%),
    linear-gradient(180deg, #faf7f1 0%, var(--bg) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(23, 20, 16, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 20, 16, 0.03) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.35;
  pointer-events: none;
}

a {
  color: inherit;
}

.post-shell {
  width: min(880px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0 72px;
}

.post-back {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border: 1px solid var(--ink);
  background: rgba(255, 255, 255, 0.58);
  text-decoration: none;
  margin-bottom: 28px;
}

.post-card {
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.post-meta {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.post-title {
  margin: 0 0 24px;
  font-family: Baskerville, "Iowan Old Style", "Times New Roman", serif;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 0.94;
}

.post-hero {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 0 24px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.post-content {
  color: var(--muted);
  line-height: 1.86;
  font-size: 1.04rem;
}

.post-content h1,
.post-content h2,
.post-content h3 {
  margin: 36px 0 14px;
  color: var(--ink);
  font-family: Baskerville, "Iowan Old Style", "Times New Roman", serif;
  line-height: 1.05;
}

.post-content h1 {
  font-size: 2.3rem;
}

.post-content h2 {
  font-size: 1.9rem;
}

.post-content h3 {
  font-size: 1.45rem;
}

.post-content p,
.post-content ul,
.post-content ol,
.post-content blockquote {
  margin: 0 0 18px;
}

.post-content .sentence-lead {
  display: block;
  margin: 0 0 6px;
  color: var(--ink);
  font-family: Baskerville, "Iowan Old Style", "Times New Roman", serif;
  font-size: 1.18em;
  font-weight: 700;
  line-height: 1.24;
}

.post-content ul,
.post-content ol {
  padding-left: 24px;
}

.post-content li + li {
  margin-top: 8px;
}

.post-content img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 24px 0;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.post-content blockquote {
  padding-left: 18px;
  border-left: 2px solid var(--accent);
  color: var(--ink);
}

.post-content code {
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid var(--line);
  font-family: "SFMono-Regular", Menlo, monospace;
  font-size: 0.92em;
}

.post-content hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 28px 0;
}

@media (max-width: 640px) {
  .post-shell {
    width: min(100vw - 20px, 880px);
  }

  .post-card {
    padding: 18px;
  }

  .post-content {
    font-size: 0.98rem;
  }
}