/* dennycow.com — quiet, typographic, no chrome. */

:root {
  --ink: #16161a;
  --muted: #8a8a86;
  --hairline: #e9e9e6;
  --bg: #fdfdfc;
  --code-bg: #f5f5f2;
  --serif: "Songti SC", "Songti TC", "Noto Serif CJK SC", "Noto Serif SC",
    Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e9e9e5;
    --muted: #8f8f8a;
    --hairline: #26262a;
    --bg: #0f0f11;
    --code-bg: #191a1c;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection {
  background: rgba(120, 120, 120, 0.18);
}

.wrap {
  max-width: 632px;
  margin: 0 auto;
  padding: 0 24px 96px;
}

/* ── masthead ───────────────────────────────────────────── */

.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 72px 0 0;
}

.wordmark {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink);
  text-decoration: none;
  text-transform: lowercase;
}

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

.masthead nav {
  display: flex;
  gap: 18px;
  font-size: 13px;
}

.masthead nav a {
  color: var(--muted);
  text-decoration: none;
}

.masthead nav a:hover {
  color: var(--ink);
}

/* ── intro ──────────────────────────────────────────────── */

.intro {
  margin: 56px 0 0;
}

.intro p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 34em;
}

.intro .sub {
  margin-top: 0.5em;
  color: var(--muted);
  font-size: 13.5px;
}

/* ── index ──────────────────────────────────────────────── */

.index {
  list-style: none;
  margin: 52px 0 0;
  padding: 0;
}

.index li {
  display: grid;
  grid-template-columns: 5em 1fr;
  column-gap: 20px;
  align-items: baseline;
  padding: 7px 0;
}

.index time {
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.index a {
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.index a:hover {
  border-bottom-color: var(--hairline);
}

.index .tag {
  font-size: 11.5px;
  color: var(--muted);
  margin-left: 8px;
  white-space: nowrap;
}

.empty {
  margin: 52px 0 0;
  color: var(--muted);
  font-size: 14px;
}

/* ── article ────────────────────────────────────────────── */

.article-head {
  margin: 56px 0 0;
}

.article-head h1 {
  margin: 0;
  font-size: 27px;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.article-meta {
  margin: 15px 0 0;
  font-size: 12.5px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  align-items: baseline;
}

.article-meta > * + *::before {
  content: "·";
  padding: 0 8px;
  color: #cfcfca;
}

@media (prefers-color-scheme: dark) {
  .article-meta > * + *::before {
    color: #3a3a3e;
  }
}

.article-meta a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
}

.article-meta a:hover {
  color: var(--ink);
}

.prose {
  margin: 40px 0 0;
  font-family: var(--serif);
  font-size: 17.5px;
  line-height: 1.95;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.prose > *:first-child {
  margin-top: 0;
}

.prose p {
  margin: 0 0 1.35em;
  text-align: justify;
  text-justify: inter-ideograph;
}

.prose h2,
.prose h3 {
  font-family: var(--sans);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0;
  text-align: left;
}

.prose h2 {
  font-size: 19px;
  margin: 2.6em 0 0.9em;
}

.prose h3 {
  font-size: 16.5px;
  margin: 2.1em 0 0.7em;
}

.prose a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(128, 128, 128, 0.45);
}

.prose a:hover {
  border-bottom-color: var(--ink);
}

.prose strong {
  font-weight: 600;
}

.prose blockquote {
  margin: 1.8em 0;
  padding: 0 0 0 1.1em;
  border-left: 2px solid var(--hairline);
  color: #5a5a56;
  font-size: 16.5px;
}

@media (prefers-color-scheme: dark) {
  .prose blockquote {
    color: #a5a5a0;
  }
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose ul,
.prose ol {
  margin: 0 0 1.35em;
  padding-left: 1.35em;
}

.prose li {
  margin: 0.35em 0;
}

.prose li > p {
  margin-bottom: 0.6em;
}

.prose img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 2em auto;
}

.prose figure {
  margin: 2em 0;
}

.prose figcaption {
  margin-top: 0.7em;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--hairline);
  width: 42%;
  margin: 3em auto;
}

.prose code {
  font-family: var(--mono);
  font-size: 13.5px;
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

.prose pre {
  background: var(--code-bg);
  padding: 16px 18px;
  border-radius: 4px;
  overflow-x: auto;
  margin: 1.8em 0;
  line-height: 1.7;
}

.prose pre code {
  background: none;
  padding: 0;
  font-size: 13px;
}

/* ── footer ─────────────────────────────────────────────── */

.site-foot {
  margin-top: 72px;
  padding-top: 22px;
  border-top: 1px solid var(--hairline);
  font-size: 12.5px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-foot a {
  color: var(--muted);
  text-decoration: none;
}

.site-foot a:hover {
  color: var(--ink);
}

.back {
  display: inline-block;
  margin: 0 0 0;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}

.back:hover {
  color: var(--ink);
}

a:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 3px;
}

@media (max-width: 520px) {
  .masthead {
    padding-top: 44px;
  }

  .intro {
    margin-top: 40px;
  }

  .index {
    margin-top: 40px;
  }

  .index li {
    grid-template-columns: 4.6em 1fr;
    column-gap: 12px;
  }

  .article-head {
    margin-top: 44px;
  }

  .article-head h1 {
    font-size: 23px;
  }

  .prose {
    font-size: 16.5px;
    line-height: 1.9;
    margin-top: 32px;
  }
}