/* ---------------------------------------------------------
   bayardchen.com — 手写样式表
   --------------------------------------------------------- */

*, *::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 -22px rgba(60, 40, 20, .45), 0 2px 6px -2px rgba(60, 40, 20, .18);

  --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: 1140px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

html[data-theme="dark"] {
  --bg: #12100e;
  --bg-elev: #1a1714;
  --ink: #f0eade;
  --ink-2: #c7bda9;
  --muted: #8d8373;
  --line: #2f2922;
  --line-soft: #241f19;
  --accent: #e06a4c;
  --accent-ink: #f0836a;
  --shadow: 0 18px 40px -22px rgba(0, 0, 0, .8), 0 2px 6px -2px rgba(0, 0, 0, .5);
}

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, 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; }

/* 英雄区 ----------------------------------------------- */
.hero {
  scroll-margin-top: 72px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(48px, 9vh, 104px) clamp(20px, 5vw, 40px) clamp(56px, 9vh, 96px);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
}

.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(20px, 3vw, 30px);
}
.eyebrow .dot { width: 5px; height: 5px; background: var(--accent); border-radius: 50%; }

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(42px, 6.6vw, 82px);
  line-height: 1.16;
  letter-spacing: .015em;
  margin: 0 0 26px;
}

.lede {
  max-width: 34em;
  font-size: clamp(15px, 1.15vw, 16.5px);
  color: var(--ink-2);
  line-height: 1.85;
  margin: 0 0 34px;
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 12px 22px;
  font-size: 14px; letter-spacing: .02em;
  border: 1px solid var(--ink);
  border-radius: 1px;
  transition: background-color .25s, color .25s, border-color .25s, transform .25s;
}
.btn-solid { background: var(--ink); color: var(--bg); }
.btn-solid:hover { background: var(--accent); border-color: var(--accent); color: #fff8ee; transform: translateY(-2px); }
.btn-ghost { border-color: var(--line); color: var(--ink-2); }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); transform: translateY(-2px); }

/* 剪贴拼贴 --------------------------------------------- */
.collage { position: relative; justify-self: center; width: 100%; max-width: 372px; }

.sheet {
  position: relative;
  aspect-ratio: 3 / 4;
  padding: 26px 24px 22px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  transform: rotate(-1.4deg);
}
.sheet::before {
  content: ""; position: absolute; inset: 7px;
  border: 1px solid var(--line-soft);
  pointer-events: none;
}

.sheet-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.stamp {
  display: grid; place-items: center;
  width: 24px; height: 24px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font: 500 12px/1 var(--serif);
}
.sheet-tag {
  font: 400 10px/1 var(--mono);
  letter-spacing: .22em; color: var(--muted);
}

.verse {
  flex: 1;
  display: flex; flex-direction: row-reverse; justify-content: center;
  gap: clamp(10px, 2.2vw, 20px);
  padding: 22px 0 18px;
}
.verse .col {
  writing-mode: vertical-rl;
  font-family: var(--serif);
  font-size: clamp(17px, 2.3vw, 21px);
  letter-spacing: .2em;
  line-height: 1.9;
  margin: 0;
  color: var(--ink);
}
.hole {
  display: inline-block;
  width: 1em; height: 1em;
  vertical-align: middle;
  border: 1px dashed color-mix(in oklab, var(--accent) 55%, transparent);
  background: color-mix(in oklab, var(--accent) 7%, transparent);
  margin: 0 .12em;
}

.sheet-foot {
  font: 400 9.5px/1.5 var(--mono);
  letter-spacing: .1em;
  color: var(--muted);
  text-align: center;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.cut-char {
  position: absolute;
  top: 44%; left: -26px;
  display: grid; place-items: center;
  width: 62px; height: 62px;
  background: var(--bg-elev);
  color: var(--ink);
  font: 400 30px/1 var(--serif);
  transform: rotate(-12deg);
  box-shadow: 0 14px 24px -12px rgba(60, 40, 20, .55);
  border: 1px solid var(--line-soft);
  clip-path: polygon(2% 4%, 98% 0%, 100% 96%, 1% 100%);
}

/* 区块 ------------------------------------------------- */
.sec {
  scroll-margin-top: 72px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(64px, 9vw, 104px) 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 18px;
}
.sec-num { color: var(--accent); }
.sec-label { text-transform: uppercase; }

.sec-title {
  font-family: var(--serif);
  font-size: clamp(26px, 3.4vw, 40px);
  letter-spacing: .02em;
  margin: 0 0 clamp(28px, 4vw, 44px);
}

/* 作品 ------------------------------------------------- */
.works-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, .85fr);
  gap: clamp(18px, 2.4vw, 30px);
  align-items: stretch;
}

.work {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(18px, 2.6vw, 34px);
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  transition: box-shadow .4s var(--ease), transform .4s var(--ease), border-color .4s;
}
.work:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: color-mix(in oklab, var(--accent) 35%, var(--line)); }

.work-vis { display: flex; align-items: center; }

.mini {
  width: 100%;
  background: color-mix(in oklab, var(--bg) 88%, var(--bg-elev));
  border: 1px solid var(--line);
  box-shadow: 0 10px 24px -18px rgba(60, 40, 20, .5);
}
.mini-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 7px 10px;
  font: 400 9.5px/1 var(--mono); letter-spacing: .08em;
  color: var(--muted);
  border-bottom: 1px solid var(--line-soft);
}
.mini-dots { display: inline-flex; gap: 4px; }
.mini-dots i { width: 5px; height: 5px; border: 1px solid var(--line); border-radius: 50%; }

.mini-body { display: grid; grid-template-columns: 1fr 1fr; min-height: 168px; }
.mini-left {
  padding: 12px 10px;
  border-right: 1px dashed var(--line);
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: .1em;
  line-height: 1.95;
  color: var(--ink);
}
.mini-left p { margin: 0; }
.mini-left .hole { width: .86em; height: .86em; }

.mini-right { position: relative; }
.mini-right span {
  position: absolute;
  left: var(--x); top: var(--y);
  transform: rotate(var(--r));
  padding: 1px 3px;
  font: 400 15px/1 var(--serif);
  color: var(--ink);
  background: var(--bg-elev);
  box-shadow: 2px 3px 0 -1px rgba(60, 40, 20, .16);
}

.work-body h3 {
  font-family: var(--serif);
  font-size: clamp(19px, 1.7vw, 23px);
  letter-spacing: .04em;
  margin: 0 0 12px;
}
.work-body p { font-size: 14px; line-height: 1.85; color: var(--ink-2); margin: 0 0 16px; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 18px; }
.chips li {
  padding: 3px 9px;
  border: 1px solid var(--line);
  font: 400 10.5px/1.6 var(--mono);
  letter-spacing: .04em;
  color: var(--muted);
}

.links { display: flex; flex-wrap: wrap; gap: 18px; }
.link-arrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13.5px;
  color: var(--accent-ink);
  border-bottom: 1px solid color-mix(in oklab, var(--accent) 40%, transparent);
  padding-bottom: 2px;
  transition: gap .25s, border-color .25s;
}
.link-arrow:hover { gap: 10px; border-color: var(--accent); }

.note-card {
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line);
  background: transparent;
  display: flex; flex-direction: column;
  justify-content: center;
}
.note-card p { font-size: 13.5px; color: var(--ink-2); line-height: 1.9; margin: 0 0 20px; }
.note-card dl { display: grid; gap: 0; }
.note-card dl > div {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 8px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
}
.note-card dt { color: var(--muted); font-family: var(--mono); letter-spacing: .04em; }
.note-card dd { color: var(--ink); }

/* 关于 ------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}
.about-grid p { font-size: 15px; color: var(--ink-2); line-height: 1.95; max-width: 34em; }
.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(24px, 3.1vw, 38px);
  line-height: 1.45;
  letter-spacing: .02em;
  margin: 0 0 16px;
}
.contact-sub { font-size: 14.5px; color: var(--muted); margin: 0 0 26px; }
.mail {
  display: inline-block;
  font: 400 clamp(17px, 2.4vw, 26px)/1.4 var(--mono);
  letter-spacing: .01em;
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
  transition: color .25s, border-color .25s;
}
.mail:hover { color: var(--accent); border-color: var(--accent); }

/* 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(16px); }
body.anim .reveal.in { opacity: 1; transform: none; transition: opacity .8s var(--ease), transform .8s var(--ease); }

/* 响应式 ----------------------------------------------- */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; gap: 44px; padding-top: 44px; }
  .hero h1 { font-size: clamp(38px, 9vw, 56px); }
  .collage { max-width: 330px; }
  .works-grid { grid-template-columns: 1fr; }
  .work { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .br-lg { display: none; }
}

@media (max-width: 560px) {
  .nav { gap: 14px; }
  .nav a i { display: none; }
  .brand-name { font-size: 14px; }
  .cut-char { left: -10px; width: 54px; height: 54px; font-size: 26px; }
  .sheet { padding: 20px 16px 18px; }
  .verse .col { font-size: 16px; letter-spacing: .16em; }
  .sec { padding-inline: 18px; }
  .foot-mid { display: none; }
}

@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; }
}