*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Georgia,"Noto Serif SC","Songti SC","SimSun",serif;
  color:#141414;
  background:#fff;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  font-size:19px;
}
.sans{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif}
img{display:block;max-width:100%;height:auto}
a{color:#111;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:#444}

.col{width:min(620px,calc(100% - 48px));margin:0 auto}

/* MINIMAL TYPOGRAPHY — almost no chrome */
.site-head{padding:56px 0 0}
.head-row{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:14px;color:#111;font-weight:600;font-size:14px;font-family:"PingFang SC","Microsoft YaHei",sans-serif;letter-spacing:.12em;text-transform:uppercase;text-decoration:none}
.brand:hover{color:#444;text-decoration:none}
.brand img{width:32px;border-radius:6px;opacity:.92}
.menu-btn{display:none;border:none;background:none;padding:6px 0;font-size:13px;cursor:pointer;font-family:inherit;color:#666;letter-spacing:.08em}
.top-nav{display:flex;gap:28px;flex-wrap:wrap;font-family:"PingFang SC","Microsoft YaHei",sans-serif}
.top-nav a{color:#888;font-size:12px;font-weight:500;letter-spacing:.06em;text-decoration:none;text-transform:uppercase}
.top-nav a:hover{color:#111;text-decoration:none}
.mnav{display:none;flex-direction:column;padding:24px 0 8px;margin-top:20px;font-family:"PingFang SC","Microsoft YaHei",sans-serif}
.mnav.open{display:flex}
.mnav a{padding:14px 0;color:#444;font-size:14px;text-decoration:none;border:none}
.mnav a:hover{color:#111}

.landing{padding:80px 0 120px}
.landing h1{
  font-size:clamp(42px,9vw,72px);
  line-height:1.08;
  font-weight:400;
  margin:0 0 48px;
  color:#0a0a0a;
  letter-spacing:-.02em;
}
.lead{
  font-size:clamp(22px,4vw,28px);
  line-height:1.55;
  color:#333;
  margin:0 0 64px;
  font-weight:400;
}
.meta{
  font-family:"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:12px;
  color:#aaa;
  letter-spacing:.14em;
  text-transform:uppercase;
  margin:0 0 80px;
}

.landing h2{
  font-size:clamp(28px,5vw,40px);
  line-height:1.2;
  font-weight:400;
  margin:96px 0 32px;
  color:#111;
  letter-spacing:-.01em;
}
.landing p{margin:0 0 28px;color:#2a2a2a;font-size:19px}
.landing ul,.landing ol{margin:0 0 28px;padding-left:0;list-style:none;color:#2a2a2a}
.landing li{margin-bottom:16px;padding-left:1.2em;text-indent:-1.2em}
.landing li::before{content:"—";color:#ccc;margin-right:.6em}

.whitespace{height:64px}
.whitespace-lg{height:120px}

.epigraph{
  font-size:clamp(24px,4.5vw,34px);
  line-height:1.45;
  color:#222;
  margin:72px 0;
  font-style:italic;
  text-align:left;
}
.epigraph cite{
  display:block;
  margin-top:20px;
  font-size:12px;
  font-style:normal;
  color:#aaa;
  font-family:"PingFang SC","Microsoft YaHei",sans-serif;
  letter-spacing:.1em;
  text-transform:uppercase;
}

.fig{margin:72px 0;text-align:left}
.fig img{margin:0;opacity:.96}
.fig figcaption{
  font-family:"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:12px;
  color:#999;
  margin-top:16px;
  letter-spacing:.04em;
  line-height:1.6;
}
.fig-row{display:flex;flex-direction:column;gap:48px;margin:72px 0}
.fig-row figure{margin:0}
.fig-row figcaption{font-size:12px;color:#999;margin-top:12px;font-family:"PingFang SC","Microsoft YaHei",sans-serif}

.link-list{margin:64px 0;padding:0;list-style:none}
.link-list li{margin-bottom:20px;padding:0;text-indent:0}
.link-list li::before{content:none}
.link-list a{font-size:18px}

.faq-plain{margin:96px 0 0}
.faq-plain h2{margin-bottom:48px}
.faq-item{margin-bottom:48px}
.faq-item h3{
  font-size:20px;
  font-weight:400;
  margin:0 0 12px;
  color:#111;
  line-height:1.4;
}
.faq-item p{font-size:17px;color:#444;margin:0;line-height:1.75}

.prose-page{padding:72px 0 100px}
.prose-page h1{font-size:clamp(36px,6vw,52px);line-height:1.12;font-weight:400;margin:0 0 40px;letter-spacing:-.01em}
.prose-page h2{font-size:28px;line-height:1.25;margin:64px 0 24px;font-weight:400;color:#111}
.prose-page p,.prose-page li{font-size:18px;color:#2a2a2a;margin-bottom:24px}
.prose-page ul,.prose-page ol{padding-left:0;list-style:none}
.prose-page li{margin-bottom:14px;padding-left:1.2em;text-indent:-1.2em}
.prose-page li::before{content:"—";color:#ccc;margin-right:.6em}

.ads-wrap{margin:32px 0}

.site-foot{
  padding:64px 0 80px;
  font-family:"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:12px;
  color:#aaa;
  letter-spacing:.04em;
}
.site-foot a{color:#888;margin-right:20px;text-decoration:none}
.site-foot a:hover{color:#333;text-decoration:none}
.site-foot p{margin:20px 0 0;line-height:1.7}

.err-page{min-height:60vh;display:grid;place-items:center;text-align:center;padding:80px 24px}
.err-page h1{font-size:clamp(64px,12vw,120px);margin:0 0 24px;color:#e8e8e8;font-weight:400;line-height:1}
.err-page p{font-size:18px;color:#888;font-family:"PingFang SC","Microsoft YaHei",sans-serif;margin:0 0 12px}
.err-page a{color:#333}

@media(max-width:640px){
  body{font-size:17px}
  .landing{padding:56px 0 80px}
  .landing h2{margin-top:72px}
  .landing p,.landing li{font-size:17px}
  .menu-btn{display:inline-block}
  .top-nav{display:none}
  .whitespace{height:40px}
  .whitespace-lg{height:72px}
}