:root{
  --ink:#000000;
  --paper:#ffffff;
  --muted:#565656;
  --hair:#dedede;
  --wash:#f4f4f4;
  --pad:clamp(16px,3.6vw,44px);
}
*,*::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:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.68;
  font-weight:400;
  letter-spacing:.004em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:inherit}
h1,h2,h3{text-wrap:balance}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

/* ---------- 报头 ---------- */
.masthead{
  position:sticky;
  top:0;
  z-index:30;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 18px;
  padding:8px var(--pad);
  background:rgba(255,255,255,.95);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1.5px solid var(--ink);
}
.mark{
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:44px;
  padding:6px 0;
  text-decoration:none;
  font-weight:600;
  font-size:16px;
  letter-spacing:.03em;
}
.mark-block{
  display:block;
  width:17px;
  height:17px;
  background:var(--ink);
}
.mark:hover .mark-block{transform:skewX(-12deg);transition:transform .18s ease}

.jump{flex:1 1 auto;min-width:0}
.jump ol{
  display:flex;
  flex-wrap:wrap;
  gap:0 2px;
  margin:0;
  padding:0;
  list-style:none;
}
.jump a{
  display:block;
  min-height:44px;
  padding:11px 9px;
  font-size:16px;
  line-height:1.4;
  text-decoration:none;
  border-bottom:2px solid transparent;
  transition:border-color .16s ease,background .16s ease;
}
.jump a:hover{border-bottom-color:var(--ink);background:var(--wash)}

.cta{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:11px 20px;
  background:var(--ink);
  color:#fff;
  font-size:16px;
  font-weight:500;
  white-space:nowrap;
  text-decoration:none;
  border-radius:999px;
  transition:transform .18s ease,background .18s ease;
}
.cta:hover{background:#242424;transform:translateY(-2px)}

/* ---------- 骨架 ---------- */
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 var(--pad);
}

/* ---------- 头版 ---------- */
.lede{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:clamp(20px,4vw,58px);
  align-items:center;
  min-height:70vh;
  padding:clamp(22px,4.6vw,50px) 0 clamp(22px,3.6vw,46px);
  border-bottom:2px solid var(--ink);
}
.lede-copy{
  grid-column:2;
  grid-row:1;
  text-align:right;
}
.lede-copy h1{
  margin:0 0 .34em;
  font-size:clamp(2rem,5.2vw,4.1rem);
  line-height:1.04;
  letter-spacing:-.028em;
  font-weight:600;
}
.standfirst{
  margin:0 0 0 auto;
  max-width:44ch;
  font-size:clamp(1rem,1.35vw,1.12rem);
  line-height:1.62;
  font-weight:300;
  color:var(--muted);
}

.plates{
  grid-column:1;
  grid-row:1;
  position:relative;
  margin:0;
  height:clamp(290px,50vh,520px);
  background-image:radial-gradient(rgba(0,0,0,.22) 1px,transparent 1.2px);
  background-size:11px 11px;
}
.plate{
  position:absolute;
  display:block;
  overflow:hidden;
  border:1.5px solid var(--ink);
  border-radius:18px;
  background:var(--wash);
}
.plate.a{top:0;left:0;width:63%;height:74%}
.plate.b{bottom:0;right:3%;width:51%;height:61%;box-shadow:-11px -11px 0 var(--paper)}
.plate .plate-img,
.plate img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  filter:grayscale(1) contrast(1.06);
}

/* ---------- 主栏 ---------- */
.grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 258px;
  gap:clamp(22px,4vw,58px);
  align-items:start;
  padding:clamp(28px,5vw,62px) 0 clamp(40px,7vw,88px);
}
.prose-col{
  min-width:0;
  border-left:1px solid var(--hair);
  padding-left:clamp(0px,2.4vw,28px);
}

.prose{max-width:74ch;line-height:1.78}
.prose div{scroll-margin-top:130px}
.prose div + div{
  margin-top:2.7em;
  padding-top:2.7em;
  border-top:1px solid var(--hair);
}
.prose h2{
  margin:.1em 0 .7em;
  font-size:clamp(1.5rem,2.5vw,2rem);
  line-height:1.2;
  letter-spacing:-.017em;
  font-weight:600;
}
.prose h2::before{
  content:"";
  display:block;
  width:46px;
  height:5px;
  margin-bottom:15px;
  background:var(--ink);
}
.prose h3{
  margin:1.6em 0 .55em;
  font-size:clamp(1.15rem,1.7vw,1.35rem);
  line-height:1.35;
  font-weight:600;
}
.prose p{margin:0 0 1.15em}
.prose div:first-of-type > p:first-of-type::first-letter{
  float:left;
  font-size:3.3em;
  line-height:.84;
  font-weight:600;
  padding:5px 12px 0 0;
}
.prose blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  background:var(--wash);
  border-left:5px solid var(--ink);
  border-radius:0 18px 18px 0;
  font-size:1.05em;
  line-height:1.62;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose ul,.prose ol{margin:0 0 1.15em;padding-left:1.35em}
.prose li{margin:.36em 0}
.prose figure{
  margin:1.8em 0;
  padding-bottom:10px;
  border-bottom:3px solid var(--ink);
  border-radius:18px;
  overflow:hidden;
}
.prose figure img,
.prose img{border-radius:18px;display:block}
.prose figcaption{
  margin-top:9px;
  font-size:16px;
  color:var(--muted);
}
.prose table{
  width:100%;
  margin:0 0 1.3em;
  border-collapse:collapse;
  font-size:16px;
}
.prose th,.prose td{
  padding:11px 12px;
  border-bottom:1px solid var(--hair);
  text-align:left;
  vertical-align:top;
}
.prose th{border-bottom:2px solid var(--ink);font-weight:600}
.prose code{
  font-family:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  font-size:.94em;
  background:var(--wash);
  padding:1px 5px;
}

/* ---------- 右侧栏 ---------- */
.rail{
  position:sticky;
  top:96px;
  font-size:16px;
}
.rail small{
  display:block;
  margin-bottom:2px;
  font-size:16px;
  letter-spacing:.24em;
  color:var(--muted);
  font-weight:500;
}
.rail h2{
  margin:0 0 16px;
  font-size:1.15rem;
  font-weight:600;
  letter-spacing:-.012em;
}
.rail ul{
  display:grid;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
}
.rail a{
  display:block;
  padding:14px 16px;
  font-size:16px;
  line-height:1.4;
  text-decoration:none;
  border:1px solid var(--hair);
  border-bottom:3px solid var(--ink);
  border-radius:18px;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.rail a:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}

/* ---------- 版权 ---------- */
.colophon{
  border-top:2px solid var(--ink);
  padding:clamp(22px,3.6vw,38px) var(--pad) 18px;
}
.colophon-in{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:24px 44px;
  max-width:1200px;
  margin:0 auto;
}
.colophon dl{margin:0;min-width:110px}
.colophon dt{
  margin-bottom:5px;
  font-size:16px;
  letter-spacing:.2em;
  color:var(--muted);
}
.colophon dd{margin:0}
.colophon dd a{
  display:inline-block;
  min-height:40px;
  padding:8px 0;
  font-size:16px;
  text-decoration:none;
  border-bottom:1px solid transparent;
}
.colophon dd a:hover{border-bottom-color:var(--ink)}
.copy{
  max-width:1200px;
  margin:24px auto 0;
  padding-top:13px;
  border-top:1px solid var(--hair);
  font-size:16px;
  color:var(--muted);
}

/* ---------- 渐入 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.on{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .cta:hover,.rail a:hover,.mark:hover .mark-block{transform:none}
}

/* ---------- 窄屏 ---------- */
@media (max-width:860px){
  .masthead{gap:4px 12px}
  .jump{order:3;flex:1 1 100%}
  .jump a{padding:10px 8px}
  .cta{padding:10px 16px;margin-left:auto}
  .lede{grid-template-columns:1fr;min-height:0;gap:20px;padding-top:20px}
  .plates{grid-column:1;grid-row:1;height:250px}
  .lede-copy{grid-column:1;grid-row:2}
  .grid{grid-template-columns:1fr;gap:34px}
  .prose-col{border-left:0;padding-left:0}
  .prose{max-width:none}
  .rail{position:static;order:2}
  .rail ul{grid-template-columns:1fr 1fr}
  .prose div{scroll-margin-top:170px}
}

@media (max-width:480px){
  .plates{height:200px}
  .lede-copy h1{font-size:clamp(1.85rem,8.4vw,2.4rem)}
  .rail ul{grid-template-columns:1fr}
  .colophon-in{gap:18px 28px}
}
</style>
</head>`;
</style>
</head>`;
</style>
</head>`;
</style>
</head>`;
</style>
</head>`;

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