/* ---------------------------------------------------------
   bayardchen.com — 手写样式表
   纸 + 墨 + 一点朱红；展柜、卡片、文章页共用一套变量
   --------------------------------------------------------- */

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

:root {
  --bg: #f3eee4;
  --bg-elev: #fbf8f1;
  --ink: #1a1712;
  --ink-2: #4b443a;
  --muted: #6f6657;
  --line: #dcd3c2;
  --line-soft: #e8e0d1;
  --accent: #b03a26;
  --accent-ink: #8f2c1c;
  --shadow: 0 18px 40px -24px rgba(60, 40, 20, .45), 0 2px 6px -2px rgba(60, 40, 20, .16);

  --t-poem: #b03a26;
  --t-essay: #2f5d62;
  --t-work: #8a6a2f;
  --t-dev: #41563f;

  --serif: "Songti SC", "STSong", "SimSun", "Source Han Serif SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --maxw: 1120px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

html[data-theme="dark"] {
  --bg: #12100e;
  --bg-elev: #1a1714;
  --ink: #f0eade;
  --ink-2: #c7bda9;
  --muted: #9a8f7e;
  --line: #2f2922;
  --line-soft: #241f19;
  --accent: #e06a4c;
  --accent-ink: #f0836a;
  --shadow: 0 18px 40px -24px rgba(0, 0, 0, .8), 0 2px 6px -2px rgba(0, 0, 0, .5);

  --t-poem: #e06a4c;
  --t-essay: #7fb0b5;
  --t-work: #c9a45e;
  --t-dev: #9dbb9a;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.78 var(--sans);
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color .45s var(--ease), color .45s var(--ease);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1.1em; }
h1, h2, h3 { margin: 0; font-weight: 500; line-height: 1.15; letter-spacing: .01em; }
ul, ol, dl, dd { margin: 0; padding: 0; }
li { list-style: none; }

::selection { background: var(--accent); color: #fff8ee; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 1px; }

.skip {
  position: fixed; top: 10px; left: 10px; z-index: 100;
  padding: 8px 14px; background: var(--ink); color: var(--bg);
  font-size: 13px; transform: translateY(-160%); transition: transform .2s;
}
.skip:focus { transform: none; }

/* 纸纹 ------------------------------------------------- */
.grain {
  position: fixed; inset: 0; z-index: 9; pointer-events: none;
  opacity: .5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.16'/%3E%3C/svg%3E");
}
html[data-theme="dark"] .grain { mix-blend-mode: screen; opacity: .22; }

/* 页头 ------------------------------------------------- */
.site-head {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 13px clamp(18px, 5vw, 54px);
  background: color-mix(in oklab, var(--bg) 84%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--line-soft);
}

.brand { display: inline-flex; align-items: center; gap: 11px; }
.seal {
  display: grid; place-items: center;
  width: 26px; height: 26px;
  background: var(--accent); color: #fff6ec;
  font: 500 14px/1 var(--serif);
  border-radius: 1px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .22);
}
.brand-name { font: 500 15px/1 var(--serif); letter-spacing: .06em; }

.nav { display: flex; gap: clamp(14px, 3vw, 34px); }
.nav a {
  position: relative;
  display: inline-flex; align-items: baseline; gap: 5px;
  font-size: 13.5px; color: var(--ink-2);
  padding: 4px 0;
  transition: color .25s;
}
.nav a i { font: 400 9.5px/1 var(--mono); font-style: normal; color: var(--muted); letter-spacing: .04em; }
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); }

.theme-btn {
  display: grid; place-items: center;
  width: 34px; height: 34px; padding: 0;
  background: none; border: 1px solid var(--line); border-radius: 50%;
  color: var(--ink-2); cursor: pointer;
  transition: border-color .25s, color .25s, transform .3s;
}
.theme-btn:hover { color: var(--accent); border-color: var(--accent); transform: rotate(-18deg); }
.theme-btn svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; }
.theme-btn .i-moon { display: none; }
html[data-theme="dark"] .theme-btn .i-sun { display: none; }
html[data-theme="dark"] .theme-btn .i-moon { display: block; }

/* 首屏 ------------------------------------------------- */
.hero {
  scroll-margin-top: 72px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(46px, 8vh, 92px) clamp(20px, 5vw, 40px) clamp(40px, 6vh, 64px);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  align-items: center;
  gap: clamp(32px, 5vw, 68px);
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font: 400 11.5px/1 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 clamp(18px, 3vw, 26px);
}
.eyebrow .dot { width: 5px; height: 5px; background: var(--accent); border-radius: 50%; }

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(40px, 6.2vw, 76px);
  line-height: 1.18;
  letter-spacing: .015em;
  margin: 0 0 24px;
}

.lede {
  max-width: 32em;
  font-size: clamp(15px, 1.15vw, 16.5px);
  color: var(--ink-2);
  line-height: 1.9;
  margin: 0 0 30px;
}

.stats { display: flex; flex-wrap: wrap; gap: clamp(16px, 3vw, 30px); }
.stat {
  display: inline-flex; align-items: baseline; gap: 6px;
  font: 400 11px/1 var(--mono);
  letter-spacing: .12em;
  color: var(--muted);
}
.stat b { font: 400 20px/1 var(--serif); color: var(--ink); letter-spacing: .02em; }

/* 最近更新卡 ------------------------------------------- */
.recent-card {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  padding: 18px 20px 8px;
  box-shadow: 0 1px 0 var(--line-soft);
}
.recent-head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
  font: 400 11px/1 var(--mono);
  letter-spacing: .16em;
  color: var(--muted);
  text-transform: uppercase;
}
.recent-head a { color: var(--accent-ink); letter-spacing: .06em; }
.recent-head a:hover { color: var(--accent); }

.recent-list li { border-bottom: 1px solid var(--line-soft); }
.recent-list li:last-child { border-bottom: 0; }
.recent-list a {
  display: grid;
  grid-template-columns: 8px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 11px 2px;
  transition: color .2s, transform .25s var(--ease);
}
.recent-list a:hover { color: var(--accent-ink); transform: translateX(3px); }
.r-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.dot-poem { background: var(--t-poem); }
.dot-essay { background: var(--t-essay); }
.dot-work { background: var(--t-work); }
.dot-dev { background: var(--t-dev); }
.r-title {
  font-family: var(--serif);
  font-size: 14px;
  line-height: 1.5;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.r-date { font: 400 10px/1 var(--mono); letter-spacing: .04em; color: var(--muted); }

/* 区块 ------------------------------------------------- */
.sec {
  scroll-margin-top: 72px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(52px, 8vw, 88px) clamp(20px, 5vw, 40px);
  border-top: 1px solid var(--line-soft);
}

.sec-head {
  display: flex; align-items: center; gap: 10px;
  font: 400 11px/1 var(--mono);
  letter-spacing: .18em;
  color: var(--muted);
  margin: 0 0 16px;
}
.sec-num { color: var(--accent); }
.sec-label { text-transform: uppercase; }

.sec-row {
  display: flex; flex-wrap: wrap;
  align-items: flex-end; justify-content: space-between;
  gap: 18px;
  margin: 0 0 clamp(24px, 3.4vw, 36px);
}

.sec-title {
  font-family: var(--serif);
  font-size: clamp(25px, 3.2vw, 38px);
  letter-spacing: .02em;
  margin: 0;
}

.filters { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  padding: 6px 13px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 1px;
  color: var(--ink-2);
  font: 400 12.5px/1.4 var(--sans);
  letter-spacing: .04em;
  cursor: pointer;
  transition: background-color .22s, color .22s, border-color .22s;
}
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip.is-on { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.chip-n { font: 400 10px/1 var(--mono); opacity: .55; margin-left: 5px; font-style: normal; }
.chip.is-disabled { opacity: .5; }

/* 展柜 ------------------------------------------------- */
.shelf {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(248px, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: color-mix(in oklab, var(--accent) 32%, var(--line));
}
.card.is-hidden { display: none; }

.card-link {
  display: flex; flex-direction: column;
  height: 100%;
  min-height: 196px;
  padding: 16px 18px 14px;
  gap: 10px;
}

.card-top { display: flex; align-items: center; gap: 8px; }
.card-top time {
  margin-left: auto;
  font: 400 10px/1 var(--mono);
  letter-spacing: .04em;
  color: var(--muted);
}

.badge {
  display: grid; place-items: center;
  width: 22px; height: 22px;
  border: 1px solid currentColor;
  font: 500 11px/1 var(--serif);
  flex: none;
}
.badge-poem { color: var(--t-poem); }
.badge-essay { color: var(--t-essay); }
.badge-work { color: var(--t-work); }
.badge-dev { color: var(--t-dev); }

.card-type { font: 400 10px/1 var(--mono); letter-spacing: .16em; color: var(--muted); }

.card-title {
  font-family: var(--serif);
  font-size: 18.5px;
  line-height: 1.45;
  letter-spacing: .02em;
  margin: 2px 0 0;
}

.card-ex {
  font-size: 12.8px;
  line-height: 1.85;
  color: var(--ink-2);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-foot {
  margin-top: auto;
  padding-top: 10px;
  display: flex; flex-wrap: wrap; gap: 5px;
}
.tag {
  padding: 2px 7px;
  border: 1px solid var(--line-soft);
  color: var(--muted);
  font: 400 10px/1.7 var(--mono);
  letter-spacing: .04em;
}

.shelf-empty {
  padding: 40px 0;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

/* 关于 ------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
  gap: clamp(26px, 5vw, 68px);
  align-items: start;
}
.about-grid p { font-size: 15px; color: var(--ink-2); line-height: 1.95; max-width: 32em; }
.about-grid .sec-title { margin-bottom: 22px; }

.facts { border-top: 1px solid var(--line); }
.facts > div { display: grid; grid-template-columns: 4.2em 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line-soft); }
.facts dt { font: 400 11px/1.9 var(--mono); letter-spacing: .1em; color: var(--accent); }
.facts dd { font-size: 13.5px; color: var(--ink-2); line-height: 1.8; }

/* 联系 ------------------------------------------------- */
.contact-title {
  font-family: var(--serif);
  font-size: clamp(23px, 3vw, 36px);
  line-height: 1.5;
  letter-spacing: .02em;
  margin: 0 0 16px;
}
.contact-sub { font-size: 14.5px; color: var(--muted); margin: 0 0 24px; }
.mail {
  display: inline-block;
  font: 400 clamp(16px, 2.3vw, 25px)/1.4 var(--mono);
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
  transition: color .25s, border-color .25s;
}
.mail:hover { color: var(--accent); border-color: var(--accent); }

/* 文章页 ----------------------------------------------- */
.post {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(36px, 6vw, 64px) clamp(20px, 5vw, 40px) clamp(64px, 9vw, 104px);
}

.back {
  display: inline-block;
  font: 400 12px/1 var(--mono);
  letter-spacing: .1em;
  color: var(--muted);
  margin-bottom: clamp(24px, 4vw, 40px);
  transition: color .2s, transform .25s;
}
.back:hover { color: var(--accent); transform: translateX(-3px); }

.post-head { display: flex; align-items: center; gap: 9px; margin-bottom: 18px; }
.post-head time { margin-left: auto; font: 400 10.5px/1 var(--mono); color: var(--muted); letter-spacing: .04em; }

.post-title {
  font-family: var(--serif);
  font-size: clamp(27px, 4.2vw, 42px);
  line-height: 1.4;
  letter-spacing: .02em;
  margin: 0 0 clamp(28px, 4vw, 44px);
  padding-bottom: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--line-soft);
}

.prose {
  font-family: var(--serif);
  font-size: 16.8px;
  line-height: 2.05;
  color: var(--ink);
  letter-spacing: .015em;
}
.prose p { margin: 0 0 1.25em; text-indent: 2em; }
.prose p:first-child { text-indent: 2em; }
.prose h2, .prose h3, .prose h4 {
  font-family: var(--serif);
  margin: 1.9em 0 .8em;
  letter-spacing: .03em;
  line-height: 1.5;
}
.prose h2 { font-size: 1.32em; }
.prose h3 { font-size: 1.15em; }
.prose strong { font-weight: 600; }
.prose a { border-bottom: 1px solid color-mix(in oklab, var(--accent) 45%, transparent); }
.prose a:hover { color: var(--accent); border-color: var(--accent); }
.prose ul, .prose ol { margin: 0 0 1.3em; padding-left: 1.4em; }
.prose ul li { list-style: none; position: relative; text-indent: 0; margin-bottom: .35em; }
.prose ul li::before { content: "·"; position: absolute; left: -.95em; color: var(--accent); }
.prose ol li { list-style: decimal; margin-bottom: .4em; text-indent: 0; }
.prose blockquote {
  margin: 1.6em 0;
  padding: 2px 0 2px 18px;
  border-left: 2px solid var(--accent);
  color: var(--ink-2);
  font-size: .96em;
}
.prose blockquote p { text-indent: 0; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.2em 0; }
.prose img { margin: 1.4em 0; border: 1px solid var(--line); }
.prose code {
  font-family: var(--mono);
  font-size: .86em;
  padding: 1px 5px;
  background: color-mix(in oklab, var(--ink) 6%, transparent);
  border-radius: 2px;
}
.prose pre {
  margin: 0 0 1.4em;
  padding: 14px 16px;
  overflow-x: auto;
  background: color-mix(in oklab, var(--ink) 5%, transparent);
  border: 1px solid var(--line-soft);
  line-height: 1.7;
}
.prose pre code { background: none; padding: 0; font-size: 12.5px; }

.prose[data-type="poem"] {
  font-size: 18.5px;
  line-height: 2.1;
  letter-spacing: .06em;
  text-align: center;
}
.prose[data-type="poem"] p { text-indent: 0; margin: 0 0 1.5em; }
.prose[data-type="poem"] p:last-child { margin-bottom: 0; }

.post-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: clamp(30px, 4vw, 44px); }

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: clamp(34px, 5vw, 52px);
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}
.pn { display: flex; flex-direction: column; gap: 5px; }
.pn span { font: 400 10.5px/1 var(--mono); letter-spacing: .12em; color: var(--muted); }
.pn b { font: 400 14px/1.5 var(--serif); color: var(--ink); transition: color .2s; }
.pn:hover b { color: var(--accent); }
.pn-next { text-align: right; }
.pn.is-empty { visibility: hidden; }

/* 页脚 ------------------------------------------------- */
.site-foot {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px clamp(20px, 5vw, 40px) 46px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  font: 400 11.5px/1.6 var(--mono);
  letter-spacing: .04em;
  color: var(--muted);
  border-top: 1px solid var(--line-soft);
}
.site-foot a { border-bottom: 1px solid transparent; transition: color .25s, border-color .25s; }
.site-foot a:hover { color: var(--accent); border-color: var(--accent); }

/* 进场动画 --------------------------------------------- */
body.anim .reveal { opacity: 0; transform: translateY(14px); }
body.anim .reveal.in { opacity: 1; transform: none; transition: opacity .75s var(--ease), transform .75s var(--ease); }

/* 响应式 ----------------------------------------------- */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; gap: 36px; padding-top: 40px; }
  .hero h1 { font-size: clamp(36px, 8.5vw, 54px); }
  .about-grid { grid-template-columns: 1fr; }
  .br-lg { display: none; }
  .post-nav { grid-template-columns: 1fr; }
  .pn-next { text-align: left; }
}

@media (max-width: 560px) {
  .nav { gap: 14px; }
  .nav a i { display: none; }
  .brand-name { font-size: 14px; }
  .sec { padding-inline: 18px; }
  .shelf { grid-template-columns: 1fr; }
  .card-link { min-height: 0; }
  .prose { font-size: 16px; }
  .foot-mid { display: none; }
  .recent-card { padding: 16px 16px 6px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  body.anim .reveal { opacity: 1; transform: none; }
}