@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@300;400;500;700&family=Noto+Serif+TC:wght@400;500;600;700&display=swap');

:root{
  --ink:#000;
  --paper:#fff;
  --serif:"Noto Serif TC","Songti SC","PingFang TC",Georgia,serif;
  --sans:"Noto Sans TC",system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;
}

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

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

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  overflow-x:clip;
}

h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:700;
  line-height:1.14;
  letter-spacing:-0.03em;
  margin:0 0 1rem;
}

p{margin:0 0 1.1rem}

a{color:inherit}

img{max-width:100%}

/* ---------- 页头 ---------- */
.site-head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:1rem 1.6rem;
  padding:1.1rem clamp(1rem,4vw,2.5rem);
  border-bottom:2px solid var(--ink);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  font-family:var(--serif);
  font-weight:900;
  font-size:clamp(1.15rem,2.6vw,1.6rem);
  letter-spacing:-0.045em;
  text-decoration:none;
  padding:.35rem 0;
  min-height:44px;
}

.brand-mk{width:26px;height:26px;object-fit:contain;display:block}

.head-side{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.75rem;
}

.pill-nav ul{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:.4rem;
  margin:0;
  padding:0;
}

.pill-nav li{
  animation:rise .55s cubic-bezier(.2,.75,.25,1) both;
  animation-delay:calc(var(--i) * 55ms);
}

.pill-nav a{
  display:block;
  padding:.55rem .85rem;
  border:2px solid var(--ink);
  border-radius:999px;
  text-decoration:none;
  font-size:16px;
  line-height:1.45;
  min-height:44px;
  transition:background .22s ease,color .22s ease;
}

.pill-nav a:hover,.pill-nav a:focus-visible{
  background:var(--ink);
  color:var(--paper);
}

.find input{
  font:inherit;
  font-size:16px;
  padding:.5rem .85rem;
  border:2px solid var(--ink);
  border-radius:999px;
  background:transparent;
  min-height:44px;
  width:9.5rem;
  outline-offset:2px;
}

.find input::placeholder{color:#555;letter-spacing:.05em}

/* ---------- 首屏 ---------- */
.hero{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  align-items:center;
  gap:clamp(1.5rem,5vw,4rem);
  min-height:70vh;
  padding:clamp(2rem,7vw,5.5rem) clamp(1rem,4vw,2.5rem);
  border-bottom:4px solid var(--ink);
}

.hero-copy{
  position:relative;
  animation:rise .7s cubic-bezier(.2,.75,.25,1) both;
}

.hero-h1{
  font-family:var(--serif);
  font-weight:900;
  font-size:clamp(3rem,9.5vw,8rem);
  line-height:.94;
  letter-spacing:-0.055em;
  margin:0;
  text-wrap:balance;
}

.hero-art{
  position:relative;
  align-self:stretch;
  min-height:38vh;
  overflow:hidden;
  border-radius:4px;
  background:#ededed;
  animation:rise .8s cubic-bezier(.2,.75,.25,1) .08s both;
}

.hero-img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:grayscale(1) contrast(1.06);
  transform:scale(1.05);
  will-change:transform;
}

.badge{
  position:absolute;
  top:.9rem;
  left:.9rem;
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-size:16px;
  line-height:1.4;
  letter-spacing:.14em;
  padding:.42rem .85rem;
  border-radius:999px;
}

/* ---------- 主体 ---------- */
.wrap{
  max-width:1220px;
  margin:0 auto;
  padding:clamp(2rem,5vw,4.5rem) clamp(1rem,4vw,2.5rem);
  display:grid;
  grid-template-columns:minmax(0,1fr) 17rem;
  gap:clamp(2rem,5vw,4rem);
  align-items:start;
}

.post{min-width:0}

.post article{
  padding:clamp(2rem,4vw,3.4rem) 0;
  border-top:2px solid var(--ink);
  scroll-margin-top:1.5rem;
}

.post article:first-child{
  border-top:0;
  padding-top:0;
}

.post article:last-child{
  border-bottom:4px solid var(--ink);
  padding-bottom:clamp(2rem,4vw,3rem);
}

.post h2{
  font-size:clamp(1.8rem,4.4vw,2.9rem);
  font-weight:900;
  letter-spacing:-0.045em;
  margin:0 0 1.2rem;
}

.post h3{
  font-size:clamp(1.2rem,2.4vw,1.55rem);
  margin:1.8rem 0 .7rem;
}

.post p,.post ul,.post ol{max-width:64ch}

.post p{line-height:1.85}

.post ul,.post ol{padding-left:1.25rem}

.post li{margin:.45rem 0}

.post blockquote{
  margin:1.6rem 0;
  padding:.2rem 0 .2rem 1.15rem;
  border-left:6px solid var(--ink);
  font-family:var(--serif);
  font-size:1.1rem;
  font-weight:500;
}

.post strong{font-weight:700}

.post a{text-decoration-thickness:2px;text-underline-offset:3px}

.post img{display:block;height:auto;border-radius:4px;margin:1.4rem 0}

.post table{width:100%;border-collapse:collapse;font-size:16px}

.post th,.post td{border-bottom:1px solid var(--ink);padding:.6rem .4rem;text-align:left}

/* ---------- 侧栏 ---------- */
.side{
  position:sticky;
  top:1.5rem;
  border:2px solid var(--ink);
  border-bottom-width:6px;
  border-radius:4px;
  padding:1.15rem 1.05rem 1.25rem;
}

.side-t{
  font-size:1.12rem;
  letter-spacing:-0.02em;
  margin:0 0 .75rem;
}

.toc ul{list-style:none;margin:0;padding:0}

.toc li{border-top:1px solid #dcdcdc}

.toc li:first-child{border-top:0}

.toc li[hidden]{display:none}

.toc a{
  display:block;
  padding:.55rem 0;
  font-size:16px;
  line-height:1.5;
  min-height:44px;
  text-decoration:none;
}

.toc a:hover,.toc a:focus-visible{text-decoration:underline;text-underline-offset:4px}

.totop{
  display:block;
  margin-top:1rem;
  text-align:center;
  text-decoration:none;
  border:2px solid var(--ink);
  border-radius:999px;
  padding:.5rem;
  font-size:16px;
  min-height:44px;
  transition:background .22s ease,color .22s ease;
}

.totop:hover,.totop:focus-visible{background:var(--ink);color:var(--paper)}

/* ---------- 页脚 ---------- */
.foot{
  background:var(--ink);
  color:var(--paper);
  padding:clamp(2.5rem,6vw,5rem) clamp(1rem,4vw,2.5rem) 2rem;
  margin-top:clamp(2rem,5vw,4rem);
}

.foot-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:clamp(1.5rem,4vw,3rem);
  max-width:1220px;
  margin:0 auto;
}

.foot dl{margin:0}

.foot dt{
  font-weight:700;
  font-size:16px;
  letter-spacing:.08em;
  margin-bottom:.7rem;
}

.foot dd{margin:0}

.foot a{
  display:inline-block;
  padding:.42rem 0;
  font-size:16px;
  line-height:1.5;
  min-height:44px;
  text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.35);
}

.foot a:hover,.foot a:focus-visible{border-bottom-color:#fff}

.f-brand{
  font-family:var(--serif);
  font-weight:900;
  font-size:clamp(1.5rem,3.4vw,2.3rem);
  line-height:1.04;
  letter-spacing:-0.045em;
  text-align:right;
  margin:0;
}

.copy{
  max-width:1220px;
  margin:clamp(2rem,5vw,3.5rem) auto 0;
  padding-top:1.2rem;
  border-top:1px solid rgba(255,255,255,.3);
  font-size:16px;
  letter-spacing:.06em;
  color:#c9c9c9;
}

@keyframes rise{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:none}
}

/* ---------- 断点 ---------- */
@media (max-width:880px){
  .wrap{grid-template-columns:1fr}
  .side{position:static;order:2}
  .hero{grid-template-columns:1fr;min-height:0;padding-top:2rem}
  .hero-art{min-height:44vh}
  .hero-h1{font-size:clamp(2.6rem,11vw,4.5rem)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .f-brand{text-align:left;grid-column:1 / -1}
}

@media (max-width:500px){
  body{font-size:16px}
  .site-head{flex-direction:column;align-items:flex-start;gap:.8rem}
  .head-side{width:100%}
  .find input{width:100%}
  .find{flex:1 1 8rem}
  .hero-h1{font-size:clamp(2.4rem,12vw,3.4rem)}
  .post h2{font-size:clamp(1.6rem,6.6vw,2.1rem)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none !important;transition:none !important}
}

button[aria-expanded]{min-width:44px;min-height:44px}