:root {
  --paper: #f1e8d3;
  --paper-deep: #e6d8bb;
  --ink: #3c342a;
  --muted: #776b58;
  --faint: #a39172;
  --line: #cdbd9d;
  --accent: #6f6048;
  --accent-soft: #dfcfaa;
  --serif: "Iowan Old Style", "Baskerville", "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 18px;
  scroll-behavior: smooth;
  color-scheme: light;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(ellipse at 14% -8%, rgba(255, 252, 238, 0.78), transparent 34rem),
    radial-gradient(circle at 88% 24%, rgba(135, 91, 37, 0.055), transparent 28rem),
    radial-gradient(circle at 18% 78%, rgba(117, 82, 39, 0.035), transparent 32rem),
    repeating-linear-gradient(0deg, rgba(91, 66, 35, 0.018) 0, rgba(91, 66, 35, 0.018) 1px, transparent 1px, transparent 5px),
    var(--paper);
  background-attachment: fixed;
  font-family: var(--serif);
  line-height: 1.85;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  content: "";
  box-shadow: inset 0 0 10rem rgba(92, 62, 24, 0.07);
}

::selection {
  color: var(--ink);
  background: var(--accent-soft);
}

a {
  color: inherit;
  text-decoration-color: var(--faint);
  text-underline-offset: 0.24em;
  text-decoration-thickness: 1px;
}

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

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 10;
  padding: 0.5rem 0.8rem;
  color: var(--paper);
  background: var(--ink);
  font-family: var(--sans);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  border-bottom: 1px solid var(--line);
}

.header-inner,
.footer-inner {
  width: min(1120px, calc(100% - 3rem));
  margin: 0 auto;
}

.header-inner {
  min-height: 6.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-name {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  text-decoration: none;
}

.site-name span {
  font-size: 1.45rem;
  letter-spacing: 0.14em;
}

.site-name small {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.09em;
}

nav {
  display: flex;
  gap: 1.7rem;
  font-family: var(--sans);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

nav a {
  text-decoration: none;
}

.site-main {
  min-height: 68vh;
}

.home-intro,
.post-list,
.page-shell {
  width: min(760px, calc(100% - 3rem));
  margin-left: auto;
  margin-right: auto;
}

.home-intro {
  padding: 9rem 0 7rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.home-intro h1 {
  margin: 0;
  font-size: clamp(3.6rem, 11vw, 6.2rem);
  font-weight: 400;
  letter-spacing: 0.2em;
  line-height: 1.05;
}

.home-tagline {
  margin: 1.7rem 0 0;
  color: var(--muted);
  font-size: 1.2rem;
  letter-spacing: 0.18em;
}

.home-note {
  max-width: 32rem;
  margin: 4.5rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.post-list {
  padding-bottom: 8rem;
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--ink);
}

.section-heading h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.section-heading a,
.read-more {
  font-family: var(--sans);
  font-size: 0.72rem;
}

.post-card {
  padding: 3.4rem 0 3.6rem;
  border-bottom: 1px solid var(--line);
}

.post-card time,
.article-header time,
.post-row time,
.archive time {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.post-card h3 {
  margin: 0.65rem 0 0.7rem;
  font-size: 1.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.post-card h3 a,
.post-row h2 a {
  text-decoration: none;
}

.post-card p {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.read-more {
  color: var(--accent);
}

.empty-state {
  padding: 3rem 0;
  color: var(--muted);
}

.article {
  width: min(700px, calc(100% - 3rem));
  margin: 0 auto;
  padding: 8rem 0 7rem;
}

.article-header {
  margin-bottom: 5rem;
}

.article-header h1 {
  margin: 0 0 1.4rem;
  font-size: clamp(2.7rem, 8vw, 4.3rem);
  font-weight: 400;
  letter-spacing: 0.12em;
  line-height: 1.2;
}

.article-description {
  margin: 2.5rem 0 0;
  padding-left: 1.2rem;
  border-left: 2px solid var(--accent-soft);
  color: var(--muted);
  font-size: 0.95rem;
}

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

.article-body p {
  margin: 0 0 1.65em;
}

.article-body h2 {
  margin: 4.8rem 0 2rem;
  font-family: var(--sans);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.article-body blockquote {
  margin: 2.5rem 0;
  padding: 0.2rem 0 0.2rem 1.4rem;
  border-left: 2px solid var(--line);
  color: var(--muted);
}

.article-body img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 3.5rem 0;
}

.article-body figure {
  margin: 3.5rem 0;
}

.article-body figcaption {
  margin-top: 0.8rem;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.68rem;
  text-align: center;
}

.article-footer {
  margin-top: 5.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tags a {
  padding: 0.18rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.65rem;
  text-decoration: none;
}

.end-mark {
  margin: 4rem 0 0;
  color: var(--faint);
  text-align: center;
  letter-spacing: 0.65em;
}

.page-shell {
  padding: 8rem 0;
}

.not-found {
  width: min(700px, calc(100% - 3rem));
  min-height: 68vh;
  margin: 0 auto;
  padding: 10rem 0 8rem;
}

.not-found h1 {
  margin: 0;
  color: var(--faint);
  font-size: clamp(5rem, 18vw, 9rem);
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1;
}

.not-found > a {
  display: inline-block;
  margin-top: 2.2rem;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 0.75rem;
}

.page-header {
  margin-bottom: 5rem;
}

.page-header h1 {
  margin: 0;
  font-size: 2.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
}

.page-header > p:last-child {
  color: var(--muted);
}

.post-list.compact {
  width: auto;
  padding: 0;
}

.post-row {
  display: grid;
  grid-template-columns: 6rem 1fr;
  column-gap: 1.5rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

.post-row h2 {
  margin: -0.25rem 0 0;
  font-size: 1.25rem;
  font-weight: 500;
}

.post-row p {
  grid-column: 2;
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.archive-year {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1.5rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
}

.archive-year h2 {
  margin: 0;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
}

.archive-year ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.archive-year li {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 2.4rem 0;
  font-family: var(--sans);
  font-size: 0.66rem;
}

.footer-inner p {
  margin: 0;
}

@media (max-width: 620px) {
  html {
    font-size: 17px;
  }

  .header-inner {
    min-height: 5.6rem;
  }

  .site-name small {
    display: none;
  }

  nav {
    gap: 1rem;
  }

  .home-intro {
    padding: 6.5rem 0 5.5rem;
  }

  .home-note {
    margin-top: 3.2rem;
  }

  .article,
  .page-shell,
  .not-found {
    padding-top: 5.5rem;
  }

  .post-row,
  .archive-year {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .post-row p {
    grid-column: 1;
  }

  .archive-year li {
    grid-template-columns: 4.8rem 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #25211b;
    --paper-deep: #2e281f;
    --ink: #ddd1ba;
    --muted: #a99b84;
    --faint: #756852;
    --line: #514737;
    --accent: #b19a70;
    --accent-soft: #3b3327;
    color-scheme: dark;
  }

  body {
    background:
      radial-gradient(ellipse at 14% -8%, rgba(151, 119, 72, 0.13), transparent 34rem),
      radial-gradient(circle at 88% 24%, rgba(188, 145, 82, 0.045), transparent 28rem),
      radial-gradient(circle at 18% 78%, rgba(170, 127, 70, 0.03), transparent 32rem),
      repeating-linear-gradient(0deg, rgba(221, 198, 156, 0.012) 0, rgba(221, 198, 156, 0.012) 1px, transparent 1px, transparent 5px),
      var(--paper);
  }

  body::before {
    box-shadow: inset 0 0 11rem rgba(0, 0, 0, 0.22);
  }
}