:root{
  --ink:#000000;
  --paper:#ffffff;
  --pad:clamp(16px,4vw,48px);
  --unit:8px;
  --max:1360px;
}

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

html{
  scroll-behavior:smooth;
  scroll-padding-bottom:104px;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  padding-bottom:104px;
  background:var(--paper);
  color:var(--ink);
  font-family:'JetBrains Mono','PingFang SC','Hiragino Sans GB','Microsoft YaHei',ui-monospace,SFMono-Regular,monospace;
  font-size:16px;
  line-height:1.68;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}

img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3{font-weight:700;line-height:1.14;letter-spacing:-0.015em;margin:0}
p{margin:0}

small{
  display:block;
  font-size:0.875rem;
  line-height:1.4;
  letter-spacing:0.24em;
  font-weight:500;
  margin-bottom:0.7em;
}

.mark{
  display:inline-grid;
  place-items:center;
  width:44px;
  height:44px;
  background:var(--paper);
  color:var(--ink);
  font-weight:700;
  line-height:1;
  flex:none;
}

/* ---------- hero ---------- */

.hero{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  min-height:100vh;
  min-height:100svh;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  grid-template-rows:1fr;
  gap:var(--unit);
  align-items:end;
  padding:var(--pad);
  background:var(--ink);
  color:var(--paper);
}

.hero__ghost{
  position:absolute;
  left:-1vw;
  bottom:6vh;
  z-index:0;
  font-size:clamp(72px,20vw,300px);
  line-height:0.82;
  font-weight:700;
  letter-spacing:-0.05em;
  white-space:nowrap;
  color:rgba(255,255,255,0.07);
  -webkit-text-stroke:1px rgba(255,255,255,0.34);
  pointer-events:none;
  user-select:none;
}

.hero__media{
  grid-column:1 / span 6;
  align-self:stretch;
  margin:0;
  min-height:44vh;
  display:grid;
  place-items:center;
  overflow:hidden;
  background:#0a0a0a;
  z-index:1;
}

.hero__media img{width:100%;height:100%;object-fit:cover}

.hero__num{
  font-size:clamp(64px,14vw,170px);
  font-weight:700;
  line-height:1;
  letter-spacing:-0.05em;
  color:rgba(255,255,255,0.22);
}

.hero__text{
  grid-column:7 / span 6;
  text-align:right;
  padding-bottom:5vh;
  z-index:1;
}

.hero__no{
  display:block;
  font-size:0.875rem;
  letter-spacing:0.3em;
  margin-bottom:1.2em;
  opacity:0.72;
}

.hero__h1{
  font-size:clamp(2.1rem,5.6vw,5rem);
  line-height:1.04;
  letter-spacing:-0.03em;
  word-break:break-word;
}

.hero__cue{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-top:clamp(20px,4vh,40px);
  min-height:48px;
  padding:0 22px;
  border:1px solid var(--paper);
  color:var(--paper);
  text-decoration:none;
  font-weight:500;
}

.hero__cue:hover{background:var(--paper);color:var(--ink)}

/* ---------- shell ---------- */

.wrap{
  max-width:var(--max);
  margin:0 auto;
  padding:0 var(--pad);
}

.stage{padding:clamp(28px,5vw,64px) 0 clamp(40px,7vw,88px)}

/* ---------- plate ---------- */

.plate{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:var(--unit);
  border-top:2px solid var(--ink);
  padding-top:12px;
  margin-bottom:clamp(32px,6vw,72px);
}

.plate__fig{
  grid-column:1 / span 7;
  margin:0;
  min-height:32vh;
  display:grid;
  place-items:center;
  overflow:hidden;
  background:var(--ink);
  color:var(--paper);
}

.plate__fig span{
  font-size:clamp(64px,12vw,150px);
  font-weight:700;
  line-height:1;
  letter-spacing:-0.05em;
  color:rgba(255,255,255,0.28);
}

.plate__fig img{width:100%;height:100%;object-fit:cover}

.plate__aside{
  grid-column:9 / span 4;
  align-self:start;
}

.toc{
  list-style:none;
  margin:0;
  padding:0;
  border-top:1px solid var(--ink);
}

.toc li{border-bottom:1px solid var(--ink)}
.toc li:last-child{border-bottom:1px solid var(--ink)}

.toc a{
  display:flex;
  align-items:baseline;
  gap:14px;
  min-height:44px;
  padding:11px 4px;
  text-decoration:none;
}

.toc a:hover{background:var(--ink);color:var(--paper)}

.toc__no{
  font-size:0.8125rem;
  letter-spacing:0.1em;
  flex:none;
  opacity:0.62;
}

.toc__tx{flex:1 1 auto}

/* ---------- 正文 ---------- */

.prose{max-width:74ch}

.prose > article{
  padding:clamp(28px,5vw,56px) 0;
  border-top:1px solid var(--ink);
  scroll-margin-top:16px;
  scroll-margin-bottom:112px;
}

.prose > article:first-child{border-top:0;padding-top:0}
.prose > article:last-child{padding-bottom:0}

.prose h2{font-size:clamp(1.5rem,3.2vw,2.25rem);margin-bottom:0.55em}
.prose h3{font-size:clamp(1.15rem,2vw,1.4rem);margin:1.5em 0 0.45em}
.prose p{margin:0 0 1.05em}
.prose p:last-child{margin-bottom:0}
.prose ul,.prose ol{margin:0 0 1.05em;padding-left:1.45em}
.prose li{margin:0.35em 0}
.prose a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose a:hover{background:var(--ink);color:var(--paper);text-decoration:none}
.prose blockquote{margin:1.4em 0;padding:0.15em 0 0.15em 1.1em;border-left:4px solid var(--ink)}
.prose figure{margin:1.4em 0}
.prose figcaption{font-size:0.9rem;margin-top:0.5em;opacity:0.72}
.prose img{margin:1.2em 0}
.prose table{width:100%;border-collapse:collapse;margin:1.3em 0;font-size:0.95rem}
.prose th,.prose td{border-bottom:1px solid var(--ink);padding:0.55em 0.6em;text-align:left;vertical-align:top}
.prose hr{border:0;border-top:1px solid var(--ink);margin:2em 0}
.prose code{background:var(--ink);color:var(--paper);padding:0.08em 0.35em;font-size:0.95em}
.prose pre{background:var(--ink);color:var(--paper);padding:16px;overflow:auto;margin:1.2em 0}
.prose pre code{background:transparent;padding:0}
.prose aside{border:1px solid var(--ink);padding:16px;margin:1.4em 0}

/* ---------- footer ---------- */

.foot{
  background:var(--ink);
  color:var(--paper);
  padding:clamp(32px,6vw,64px) var(--pad) 24px;
}

.foot__cols{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(16px,3vw,40px);
  max-width:var(--max);
  margin:0 auto;
  padding-bottom:24px;
  border-bottom:1px solid rgba(255,255,255,0.35);
}

.foot__col address{
  font-style:normal;
  margin-top:12px;
  line-height:1.4;
  word-break:break-word;
}

.foot__col ul{list-style:none;margin:0;padding:0}
.foot__col li{border-bottom:1px solid rgba(255,255,255,0.2)}
.foot__col a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:8px 0;
  text-decoration:none;
}
.foot__col a:hover{text-decoration:underline;text-underline-offset:4px}

.foot__base{
  max-width:var(--max);
  margin:16px auto 0;
  display:flex;
  justify-content:space-between;
  gap:12px;
  font-size:1rem;
}

/* ---------- 底部固定条 ---------- */

.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:60;
  display:flex;
  align-items:center;
  gap:8px;
  padding:8px 10px calc(8px + env(safe-area-inset-bottom));
  background:var(--ink);
  color:var(--paper);
  border-top:1px solid rgba(255,255,255,0.4);
}

.dock__logo{
  flex:none;
  width:44px;
  height:44px;
  display:grid;
  place-items:center;
  background:var(--paper);
  color:var(--ink);
  font-weight:700;
  text-decoration:none;
  overflow:hidden;
}

.dock__logo img{width:100%;height:100%;object-fit:cover}

.dock__nav{
  flex:1 1 auto;
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}

.dock__nav::-webkit-scrollbar{display:none}

.dock__nav ul{display:flex;gap:2px;list-style:none;margin:0;padding:0}

.dock__nav a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 12px;
  color:var(--paper);
  text-decoration:none;
  white-space:nowrap;
  font-size:1rem;
}

.dock__nav a:hover{background:var(--paper);color:var(--ink)}

.ic{
  display:block;
  flex:none;
  width:8px;
  height:8px;
  border:1px solid currentColor;
}

.dock__cta{
  flex:none;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 16px;
  background:var(--paper);
  color:var(--ink);
  text-decoration:none;
  font-weight:700;
  white-space:nowrap;
}

.dock__cta:hover{background:var(--ink);color:var(--paper);box-shadow:inset 0 0 0 1px var(--paper)}

/* ---------- 动效 ---------- */

.js .reveal{
  opacity:0;
  transform:translate3d(0,18px,0);
  transition:opacity 0.7s ease,transform 0.7s ease;
}

.js .reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- 窄屏 ---------- */

@media (max-width:820px){
  html{scroll-padding-bottom:96px}
  body{padding-bottom:96px}

  .hero{
    grid-template-columns:1fr;
    grid-template-rows:auto;
    align-items:start;
    min-height:0;
    padding-top:var(--pad);
  }

  .hero__ghost{
    top:32vh;
    bottom:auto;
    left:-2vw;
    font-size:24vw;
    -webkit-text-stroke-width:1px;
  }

  .hero__media{
    grid-column:1;
    height:30vh;
    min-height:0;
    align-self:auto;
  }

  .hero__text{
    grid-column:1;
    text-align:right;
    padding-bottom:0;
    padding-top:18px;
  }

  .hero__h1{font-size:clamp(1.9rem,9vw,2.6rem)}

  .plate{grid-template-columns:1fr;gap:16px}
  .plate__fig{grid-column:1;min-height:24vh}
  .plate__aside{grid-column:1}

  .prose{max-width:none}

  .foot__cols{grid-template-columns:1fr 1fr;gap:16px}
  .foot__col:first-child{grid-column:1 / -1;display:flex;align-items:center;gap:12px}
  .foot__col:first-child address{margin-top:0}

  .dock__nav a{font-size:0.95rem;padding:0 10px}
  .dock__cta{padding:0 12px}
}

@media (max-width:400px){
  .dock__cta span{display:none}
}

@media (max-width:340px){
  .dock__nav a{font-size:0.9rem}
}

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