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

:root{
  --ink:#000;
  --paper:#fff;
  --mono:'Roboto Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:'Exo','Helvetica Neue',Arial,system-ui,-apple-system,sans-serif;
  --pad:clamp(1.25rem,5vw,5rem);
  --r:4px;
}

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

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

body{
  margin:0;
  background:#fff;
  color:#000;
  font-family:var(--sans);
  font-size:1.0625rem;
  font-weight:400;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0 0 1.15rem}
button{font:inherit;color:inherit}
h1,h2,h3{font-weight:900;letter-spacing:-.05em;line-height:1.03;margin:0}

/* 顶部细条 */
.topbar{
  background:#000;
  color:#fff;
  font-family:var(--mono);
  font-size:.72rem;
  letter-spacing:.14em;
  line-height:1.6;
  padding:.5rem var(--pad);
}
.topbar span{
  display:block;
  max-width:74ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* 页头 */
.hdr{
  position:sticky;
  top:0;
  z-index:60;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:.7rem var(--pad);
  background:#fff;
  border-bottom:2px solid #000;
}
.brand{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:1.25rem;
  font-weight:900;
  letter-spacing:-.045em;
}
.burger{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  min-height:44px;
  padding:.5rem .85rem;
  background:#fff;
  border:2px solid #000;
  border-radius:var(--r);
  font-family:var(--mono);
  font-size:.78rem;
  letter-spacing:.16em;
  cursor:pointer;
}
.burger:focus-visible{outline:3px solid #000;outline-offset:3px}
.burger-lines{
  display:block;
  position:relative;
  width:22px;
  height:2px;
  background:#000;
}
.burger-lines::before,
.burger-lines::after{
  content:'';
  position:absolute;
  left:0;
  width:22px;
  height:2px;
  background:#000;
}
.burger-lines::before{top:-7px}
.burger-lines::after{top:7px}

/* 全屏遮罩菜单 */
.overlay{
  position:fixed;
  inset:0;
  z-index:80;
  display:grid;
  place-items:center;
  padding:6rem var(--pad) 3rem;
  background:#000;
  color:#fff;
  opacity:0;
  visibility:hidden;
  transition:opacity .35s ease,visibility .35s ease;
}
.overlay.open{opacity:1;visibility:visible}
.ov-nav{width:100%;max-width:40rem}
.ov-nav ul{list-style:none;margin:0;padding:0;display:grid;gap:.1rem}
.ov-nav a{
  display:flex;
  align-items:baseline;
  gap:1rem;
  min-height:44px;
  padding:.55rem 0;
  border-bottom:1px solid rgba(255,255,255,.22);
  color:#fff;
  font-size:clamp(1.6rem,4.4vw,2.6rem);
  font-weight:900;
  letter-spacing:-.045em;
  opacity:0;
  transform:translateY(10px);
}
.overlay.open .ov-nav a{
  opacity:1;
  transform:none;
  transition:opacity .4s ease,transform .4s ease;
  transition-delay:calc(var(--i) * 40ms);
}
.ov-nav .num{
  font-family:var(--mono);
  font-size:.68rem;
  font-weight:400;
  letter-spacing:.18em;
  opacity:.6;
}

/* Hero */
.hero{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  align-items:center;
  gap:clamp(1rem,3vw,2.5rem);
  min-height:45vh;
  padding:clamp(2rem,6vw,4rem) var(--pad);
  border-bottom:2px solid #000;
}
.hero-h1{
  grid-column:1;
  grid-row:1;
  font-size:clamp(2.75rem,7.5vw,7rem);
  letter-spacing:-.055em;
  text-align:right;
  text-wrap:balance;
}
.collage{
  grid-column:2;
  grid-row:1;
  position:relative;
  margin:0;
  min-height:clamp(180px,24vh,290px);
}
.shot{
  display:block;
  overflow:hidden;
  border:2px solid #000;
  border-radius:var(--r);
  background:#fff;
}
.shot img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/5}
.shot.ph{aspect-ratio:4/5;background:repeating-linear-gradient(45deg,#000 0 2px,#fff 2px 9px)}
.shot.a{width:62%;transform:translateY(-8%)}
.shot.b{position:absolute;right:0;bottom:-7%;width:55%}

/* 主体骨架 */
.shell{
  display:grid;
  grid-template-columns:minmax(190px,250px) minmax(0,1fr);
  gap:clamp(1.5rem,4vw,4rem);
  padding:clamp(2rem,6vw,5rem) var(--pad);
}
.side{
  position:sticky;
  top:5.5rem;
  align-self:start;
  border-left:2px solid #000;
  padding-left:1rem;
}
.side-title{font-size:1.05rem;letter-spacing:-.035em}
.subtitle{
  margin:.4rem 0 1rem;
  font-family:var(--mono);
  font-size:.68rem;
  letter-spacing:.2em;
  opacity:.6;
}
.side-nav ol{list-style:none;margin:0;padding:0;display:grid;gap:1px}
.side-nav a{
  display:flex;
  align-items:baseline;
  gap:.6rem;
  min-height:40px;
  padding:.45rem .25rem;
  border-bottom:1px solid rgba(0,0,0,.16);
  font-size:.9rem;
  transition:background .2s ease,color .2s ease;
}
.side-nav a:hover,
.side-nav a:focus-visible{background:#000;color:#fff}
.side-nav .num{font-family:var(--mono);font-size:.62rem;opacity:.55}

/* 正文 */
.body{min-width:0;max-width:72ch}
.body section{
  padding:clamp(1.75rem,4vw,3rem) 0;
  border-top:2px solid #000;
  scroll-margin-top:6rem;
}
.body section:first-child{border-top:0;padding-top:0}
.body h2{font-size:clamp(1.8rem,4.2vw,3.4rem);margin-bottom:.7rem;text-wrap:balance}
.body h2 + p,
.body h2 + .lead{
  margin-bottom:1.5rem;
  font-family:var(--mono);
  font-size:.94rem;
  letter-spacing:0;
  opacity:.7;
}
.body h3{font-size:1.25rem;letter-spacing:-.02em;margin:1.75rem 0 .5rem}
.body p{max-width:66ch}
.body ul,.body ol{margin:0 0 1.25rem;padding-left:1.3rem}
.body li{margin-bottom:.4rem}
.body a{text-decoration:underline;text-underline-offset:3px}
.body strong{font-weight:700}
.body figure{
  margin:1.5rem 0;
  padding:.5rem;
  border:2px solid #000;
  border-radius:var(--r);
}
.body figure img{border-radius:2px}
.body blockquote{
  margin:1.5rem 0;
  padding:.2rem 0 .2rem 1.1rem;
  border-left:4px solid #000;
  font-weight:600;
}
.body aside{
  margin:1.5rem 0;
  padding:1rem 1.1rem;
  border:2px solid #000;
  border-radius:var(--r);
  font-size:.98rem;
}

/* 页脚 */
footer{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(1.5rem,4vw,3rem);
  padding:clamp(2rem,6vw,4rem) var(--pad) 1.5rem;
  border-top:2px solid #000;
}
footer section{min-width:0}
footer h2{
  margin-bottom:.9rem;
  font-family:var(--mono);
  font-size:.74rem;
  font-weight:500;
  letter-spacing:.2em;
}
.f-logo{
  display:inline-block;
  min-height:44px;
  padding:.3rem 0;
  font-size:clamp(1.4rem,3.6vw,2.1rem);
  font-weight:900;
  letter-spacing:-.05em;
  line-height:1.15;
}
footer dl{margin:0;display:grid;grid-template-columns:1fr auto;align-items:baseline;gap:0}
footer dt{margin:0}
footer dd{margin:0;font-family:var(--mono);font-size:.68rem;opacity:.5}
footer dt a{
  display:inline-block;
  min-height:40px;
  padding:.42rem 0;
  line-height:1.7;
}
footer dt a:hover,
footer dt a:focus-visible{text-decoration:underline;text-underline-offset:4px}
.sub{
  display:flex;
  gap:.5rem;
  padding:.3rem;
  border:2px solid #000;
  border-radius:var(--r);
}
.sub input{
  flex:1;
  min-width:0;
  padding:.5rem;
  border:0;
  background:transparent;
  font:inherit;
  font-size:.95rem;
}
.sub input:focus{outline:0}
.sub button{
  min-height:40px;
  padding:.55rem 1rem;
  border:0;
  border-radius:var(--r);
  background:#000;
  color:#fff;
  font-family:var(--mono);
  font-size:.74rem;
  letter-spacing:.16em;
  cursor:pointer;
}
.copy{
  grid-column:1 / -1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  margin:1.5rem 0 0;
  padding-top:1rem;
  border-top:1px solid rgba(0,0,0,.2);
  font-family:var(--mono);
  font-size:.74rem;
  letter-spacing:.1em;
}
.to-top{display:inline-flex;align-items:center;min-height:40px;padding:.35rem 0}
.to-top:hover{text-decoration:underline;text-underline-offset:4px}

/* 移动端 */
@media (max-width:760px){
  .topbar{font-size:.68rem;letter-spacing:.1em}
  .hdr{padding:.5rem var(--pad)}
  .hero{
    grid-template-columns:1fr;
    min-height:0;
    padding-top:1.6rem;
    padding-bottom:2rem;
  }
  .hero-h1{
    grid-column:1;
    grid-row:auto;
    text-align:left;
    font-size:clamp(2.5rem,11vw,4rem);
  }
  .collage{
    grid-column:1;
    grid-row:auto;
    margin-top:.6rem;
    min-height:170px;
  }
  .shell{grid-template-columns:1fr;gap:1.75rem}
  .side{
    position:static;
    border-left:0;
    border-top:2px solid #000;
    padding-left:0;
    padding-top:.8rem;
  }
  .side-nav ol{grid-template-columns:1fr 1fr;gap:0 .75rem}
  footer{grid-template-columns:1fr;gap:1.75rem}
  .copy{flex-direction:column;align-items:flex-start;gap:.3rem}
  .body section{scroll-margin-top:5rem}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .overlay,
  .ov-nav a,
  .side-nav a{transition:none!important}
  .overlay.open .ov-nav a{opacity:1;transform:none}
  .shot.a{transform:none}
}
</｜DSML｜ parameter>
</｜DSML｜ invoke>
</｜DSML｜ calls>

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