:root{
  --bg:#14110D; --bg2:#1B1711; --line:#2E2820; --line2:#5A5245;
  --ink:#EFE8DA; --ink2:#CFC6B5; --ink3:#BDB4A3; --mute:#A89F8E; --mute2:#8F8676;
  --gold:#D9B25F; --gold-hi:#E6C36F; --seal:#E0584A;
  --serif-zh:"Songti SC","STSong","Noto Serif SC","Source Han Serif SC","Source Han Serif CN",serif;
  --display:"Cormorant Garamond",Georgia,var(--serif-zh);
  --label:"Jost","Avenir Next","PingFang SC","Helvetica Neue",sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--serif-zh);font-size:17px;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:var(--ink);text-decoration:none;transition:color .2s}
a:hover{color:var(--gold-hi)}
::selection{background:var(--gold);color:var(--bg)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.skip{position:absolute;left:-999px;top:8px;background:var(--gold);color:var(--bg);padding:8px 14px;z-index:20}
.skip:focus{left:8px}
.gold{color:var(--gold)}
.mono{font-family:var(--mono)}
.wrap{max-width:1080px;margin:0 auto;padding-left:clamp(20px,5vw,64px);padding-right:clamp(20px,5vw,64px)}
.wrap-narrow{max-width:760px;margin:0 auto;padding-left:clamp(20px,5vw,40px);padding-right:clamp(20px,5vw,40px)}

/* progress line */
.progress{position:fixed;inset:0 0 auto 0;height:2px;z-index:30;pointer-events:none}
.progress span{display:block;height:100%;width:100%;background:var(--gold);transform-origin:0 50%;transform:scaleX(0)}

/* header */
.top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-top:24px;padding-bottom:24px}
.brand{display:flex;align-items:center;gap:14px}
.seal{width:40px;height:40px;border:1.5px solid var(--seal);color:var(--seal);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;border-radius:4px;transition:transform .4s}
.brand:hover .seal{transform:rotate(-6deg)}
.brand-name{font-family:var(--display);font-size:22px;font-weight:600;letter-spacing:.02em}
.mainnav{display:flex;flex-wrap:wrap;gap:2px;font-size:15px}
.mainnav a{padding:10px 12px;min-height:44px;display:inline-flex;align-items:center}

/* dot nav (desktop) */
.dots{position:fixed;right:24px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:2px;z-index:10}
.dots a{display:flex;align-items:center;justify-content:flex-end;gap:12px;padding:7px 4px;flex-direction:row-reverse}
.dot{width:6px;height:6px;border-radius:50%;background:var(--line2);transition:all .3s}
.dot-label{font-family:var(--label);font-size:12px;letter-spacing:.12em;color:var(--mute);opacity:0;transform:translateX(6px);transition:all .25s;white-space:nowrap}
.dots a:hover .dot-label,.dots a:focus-visible .dot-label{opacity:1;transform:none}
.dots a.active .dot{background:var(--gold);transform:scale(1.5)}
@media (max-width:900px){.dots{display:none}}

/* labels */
.eyebrow{margin:0 0 10px;font-family:var(--label);font-size:12px;letter-spacing:.32em;text-transform:uppercase;color:var(--gold)}
.meta{margin:0;font-family:var(--label);font-size:13px;letter-spacing:.12em;color:var(--mute)}
.meta .sep{color:var(--line2);margin:0 8px}
.more{display:inline-block;margin-top:16px;padding:10px 0;font-size:15px;color:var(--gold)}
.lead{color:var(--mute);max-width:640px;margin:0 0 32px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 26px;border:1px solid var(--line2);font-size:15px;transition:all .25s}
.btn:hover{border-color:var(--gold);color:var(--gold-hi)}
.btn-gold{background:var(--gold);border-color:var(--gold);color:var(--bg);font-weight:600}
.btn-gold:hover{background:var(--gold-hi);color:var(--bg)}
kbd{font-family:var(--mono);font-size:12px;border:1px solid var(--line2);border-radius:3px;padding:1px 6px;color:var(--ink2)}

/* hero */
.hero{min-height:calc(100vh - 92px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:24px;padding-top:48px;padding-bottom:64px;position:relative}
.hero::before{content:"";position:absolute;inset:10% 10%;background:radial-gradient(ellipse at 50% 45%,#2a2217 0%,rgba(20,17,13,0) 65%);z-index:-1;animation:breathe 9s ease-in-out infinite}
@keyframes breathe{50%{opacity:.6;transform:scale(1.06)}}
.rule{width:64px;height:1px;background:var(--gold);transform-origin:center;animation:grow 1.2s .1s both cubic-bezier(.2,.7,.2,1)}
@keyframes grow{from{transform:scaleX(0)}}
.hero h1{margin:0;font-weight:600;font-size:clamp(38px,6.4vw,82px);line-height:1.22;letter-spacing:.02em}
.hero h1 .line{display:block;animation:rise 1s both cubic-bezier(.2,.7,.2,1)}
.hero h1 .line+.line{animation-delay:.18s}
.hero .eyebrow{animation:fade 1s both}
.tagline{margin:0;max-width:620px;font-family:var(--display);font-style:italic;font-size:clamp(20px,2.3vw,27px);line-height:1.4;color:var(--ink2);animation:rise 1s .35s both}
.intro{margin:0;max-width:600px;color:var(--mute);animation:rise 1s .45s both}
.cta{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:8px;animation:rise 1s .55s both}
.keys-hint{margin:28px 0 0;font-size:13px;color:var(--mute2);animation:fade 1s 1.2s both}
@media (max-width:900px){.keys-hint{display:none}}
@keyframes rise{from{opacity:0;transform:translateY(22px)}}
@keyframes fade{from{opacity:0}}

/* stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:30px 12px;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}
.stat-n{font-family:var(--display);font-size:46px;font-weight:500;line-height:1;color:var(--gold);font-variant-numeric:tabular-nums}
.stat-l{font-size:14px;color:var(--mute)}

/* sections */
.block{padding-top:96px;padding-bottom:72px;scroll-margin-top:12px}
.block h2,.page-h{margin:0 0 36px;font-weight:600;font-size:clamp(30px,3.6vw,44px);line-height:1.3}
.page-top{padding-top:48px}

/* project rows */
.rows{list-style:none;margin:0;padding:0}
.rows li{border-top:1px solid var(--line)}
.rows li:last-child{border-bottom:1px solid var(--line)}
.row{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px 32px;padding:30px 8px;position:relative}
.row::after{content:"→";position:absolute;right:8px;top:30px;color:var(--gold);opacity:0;transform:translateX(-10px);transition:all .3s}
.row:hover::after{opacity:1;transform:none}
.row:hover{color:var(--ink);background:linear-gradient(90deg,rgba(217,178,95,.05),transparent 70%)}
.num{font-family:var(--display);font-style:italic;font-size:28px;color:var(--gold);width:48px}
.row-main{flex:999 1 420px;min-width:0;display:flex;flex-direction:column;gap:6px}
.row-name{font-family:var(--display);font-weight:600;font-size:30px;line-height:1.15;transition:color .2s}
.row:hover .row-name{color:var(--gold-hi)}
.row-title{font-size:16px;color:var(--ink2)}
.row-line{font-size:16px;color:var(--ink3)}
.row-tags{font-family:var(--mono);font-size:13px;color:var(--mute2)}
.row-side{flex:1 1 140px;display:flex;flex-direction:column;gap:6px;align-items:flex-end;font-family:var(--label);font-size:13px;letter-spacing:.12em;color:var(--mute);padding-right:28px}

/* apps */
.apps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.app{border:1px solid var(--line);background:var(--bg2);padding:26px;display:flex;flex-direction:column;gap:10px;transition:border-color .3s,transform .3s}
.app:hover{border-color:var(--gold);transform:translateY(-3px)}
.app-kind{font-family:var(--label);font-size:12px;letter-spacing:.2em;color:var(--gold)}
.app-name{font-size:22px;font-weight:600}
.app-line{font-size:15px;color:var(--ink3)}

/* featured app */
.feature{display:flex;flex-wrap:wrap;gap:56px;align-items:center;border:1px solid var(--line);background:linear-gradient(135deg,#1d1811 0%,#14110D 60%);padding:clamp(28px,5vw,56px);position:relative;overflow:hidden}
.feature::after{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(217,178,95,.12),transparent 70%);pointer-events:none}
.feature-main{flex:999 1 420px;min-width:0;display:flex;flex-direction:column;gap:16px}
.feature-kind{margin:0;font-family:var(--label);font-size:12px;letter-spacing:.24em;color:var(--gold)}
.feature-name{margin:0;font-family:var(--display);font-weight:600;font-size:clamp(48px,6vw,76px);line-height:1;color:var(--ink)}
.feature-tag{margin:0;font-size:clamp(20px,2.2vw,26px);font-weight:600;color:var(--gold)}
.feature-sum{margin:0;color:var(--ink3);max-width:560px}
.flow{list-style:none;margin:8px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));position:relative;max-width:560px}
.flow li{display:flex;flex-direction:column;align-items:center;gap:8px;position:relative;text-align:center}
.flow li+li::before{content:"";position:absolute;top:24px;right:50%;width:100%;height:1px;background:var(--line2);z-index:0}
.flow-k{position:relative;z-index:1;width:48px;height:48px;border-radius:50%;border:1px solid var(--gold);background:var(--bg);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;color:var(--gold);transition:all .3s}
.flow li:hover .flow-k{background:var(--gold);color:var(--bg)}
.flow-d{font-size:13px;color:var(--mute)}
.feature-metric{margin:8px 0 0;display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 14px}
.feature-metric .from{font-family:var(--display);font-size:40px;color:var(--mute);text-decoration:line-through;text-decoration-color:var(--seal);text-decoration-thickness:2px}
.feature-metric .arrow{color:var(--gold);font-size:22px}
.feature-metric .to{font-family:var(--display);font-size:56px;line-height:1;color:var(--gold)}
.feature-metric .metric-l{font-size:14px;color:var(--mute);flex-basis:100%}
.cta-left{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.phone{flex:1 1 240px;max-width:280px;margin:0 auto;aspect-ratio:9/18.5;border:1px solid var(--line2);border-radius:34px;padding:12px;background:#0d0b08;box-shadow:0 30px 80px rgba(0,0,0,.45);transform:rotate(2deg);transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.feature:hover .phone{transform:rotate(0) translateY(-6px)}
.phone img{width:100%;height:100%;object-fit:cover;border-radius:24px}
.phone-ui{height:100%;border-radius:24px;background:#F3F1EA;color:#1d1a15;padding:22px 16px;display:flex;flex-direction:column;gap:12px;font-family:var(--label);overflow:hidden}
.phone-ui p{margin:0}
.pu-brand{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:#6b6457;text-align:center}
.pu-h{font-family:var(--display);font-weight:600;font-size:24px}
.pu-stats{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.pu-stats span{border-radius:12px;padding:10px;font-size:11px;color:#3a352c;background:#E4F27A;display:flex;flex-direction:column}
.pu-stats span+span{background:#F6D3E0}
.pu-stats b{font-size:22px}
.pu-card{border-radius:16px;background:#3B5BDB;color:#fff;padding:14px;display:flex;flex-direction:column;gap:8px}
.pu-who{font-size:11px;opacity:.8}
.pu-q{font-family:var(--serif-zh);font-size:15px;line-height:1.5}
.pu-btn{align-self:flex-start;background:#fff;color:#1d1a15;border-radius:999px;padding:6px 12px;font-size:11px;font-weight:500}
.pu-flow{margin-top:auto;display:flex;justify-content:space-between}
.pu-flow span{width:36px;height:36px;border-radius:50%;background:#1d1a15;color:#E4F27A;display:flex;align-items:center;justify-content:center;font-family:var(--serif-zh);font-weight:700;font-size:14px}
.apps{margin-top:24px}
.h1-sub{display:block;margin-top:8px;font-size:.55em;color:var(--gold)}
.embed-in{margin:0 0 40px}

/* method */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.step{background:var(--bg);padding:24px 22px;display:flex;flex-direction:column;gap:8px;min-height:150px;transition:background .3s}
.step:hover{background:var(--bg2)}
.step-n{font-family:var(--display);font-style:italic;font-size:34px;line-height:1;color:var(--gold)}
.step-t{font-size:18px;font-weight:600}
.step-d{font-size:14px;color:var(--mute)}
.step-try{background:var(--bg2);justify-content:space-between}
.step-try code{font-family:var(--mono);font-size:14px;color:var(--ink)}
.copy{align-self:flex-start;font:inherit;font-size:13px;color:var(--gold);background:none;border:1px solid var(--line2);padding:8px 14px;min-height:40px;cursor:pointer}
.copy:hover{border-color:var(--gold)}
.case{display:flex;flex-wrap:wrap;gap:40px;margin-top:64px}
.case-head{flex:1 1 260px}
.case-head h3{margin:0;font-size:clamp(26px,3vw,34px);font-weight:600}
.case-head .mono{font-size:16px;font-weight:400;color:var(--mute);display:block}
.case-rows{flex:999 1 460px;min-width:0;margin:0}
.case-rows div{display:flex;flex-wrap:wrap;gap:6px 24px;padding:16px 0;border-top:1px solid var(--line)}
.case-rows dt{width:96px;font-size:14px;color:var(--gold)}
.case-rows dd{margin:0;flex:1 1 260px;color:var(--ink2)}

/* quote */
.quote{padding-top:96px;padding-bottom:96px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center}
.quote blockquote{margin:0 auto;max-width:800px}
.quote p{margin:0 0 20px;font-size:clamp(26px,3.4vw,40px);font-weight:600;line-height:1.6;color:var(--gold)}
.quote footer a{font-size:14px;color:var(--mute)}

/* video cards */
.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:28px}
.vcard{display:flex;flex-direction:column;gap:12px}
.vcover{position:relative;aspect-ratio:3/4;border:1px solid var(--line);background:linear-gradient(160deg,#2a2217 0%,#17130e 55%,#100d0a 100%);overflow:hidden;display:flex;align-items:flex-end;padding:22px;transition:border-color .3s}
.vcover::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(217,178,95,.035) 0 1px,transparent 1px 6px);pointer-events:none}
.vcover-title{position:relative;font-size:22px;font-weight:600;line-height:1.45;color:var(--ink);transition:transform .4s}
.vplay{position:absolute;top:50%;left:50%;width:62px;height:62px;margin:-31px 0 0 -31px;border-radius:50%;border:1px solid var(--gold);color:var(--gold);display:flex;align-items:center;justify-content:center;background:rgba(20,17,13,.6);transition:transform .35s,background .35s,color .35s}
.vdur{position:absolute;top:14px;right:14px;font-family:var(--mono);font-size:12px;color:var(--ink2)}
.vcard:hover .vcover{border-color:var(--gold)}
.vcard:hover .vplay{transform:scale(1.12);background:var(--gold);color:var(--bg)}
.vcard:hover .vcover-title{transform:translateY(-4px)}
.vmeta{font-family:var(--label);font-size:12px;letter-spacing:.16em;color:var(--mute)}
.vtitle{font-size:17px;line-height:1.5}

/* posts */
.post{padding:32px 0;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:10px;max-width:780px}
.post:first-child{border-top:1px solid var(--line)}
.post h3{margin:0;font-weight:600;font-size:clamp(22px,2.5vw,29px);line-height:1.45}
.excerpt{margin:0;color:var(--ink3)}
.post .more{margin:0;align-self:flex-start;padding:4px 0}

/* about */
.about{display:flex;flex-wrap:wrap;gap:48px;align-items:flex-start;border-top:1px solid var(--line)}
.avatar{width:160px;height:160px;border-radius:50%;border:1px solid var(--gold);display:flex;align-items:center;justify-content:center;font-size:56px;color:var(--seal);background:var(--bg2)}
.about-main{flex:999 1 420px;min-width:0}
.about-main p{margin:0 0 14px;color:var(--ink3)}
.about-title{font-size:26px;font-weight:600;color:var(--ink)!important}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.chips a,.chips span{padding:10px 18px;border:1px solid var(--line);font-size:15px;min-height:44px;display:inline-flex;align-items:center}
.chips a:hover{border-color:var(--gold)}

/* footer */
.foot{border-top:1px solid var(--line);padding-top:28px;padding-bottom:48px;margin-top:40px}
.disclaimer{margin:0 0 16px;font-size:13px;color:var(--mute2)}
.foot-row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;font-size:13px;color:var(--mute2)}
.foot-links{display:flex;flex-wrap:wrap;gap:20px;font-family:var(--label);letter-spacing:.1em}
.foot-links a{color:var(--mute2)}
.foot-links a.gold{color:var(--gold)}

/* reader */
.reader{padding-top:48px;padding-bottom:40px}
.reader-head{padding-bottom:32px;border-bottom:1px solid var(--line);margin-bottom:32px}
.reader-head h1{margin:18px 0;font-size:clamp(30px,4.4vw,46px);line-height:1.35;font-weight:600}
.reader-summary{margin:0 0 12px;font-size:18px;color:var(--ink2)}
.reader-src{margin:0;font-size:14px;color:var(--mute)}
.reader-src a{color:var(--gold)}
.reader-repo{color:var(--mute);margin:-6px 0 14px}
.toc{border:1px solid var(--line);background:var(--bg2);padding:22px 26px;margin-bottom:40px}
.toc ol{margin:0;padding-left:22px;font-size:15px}
.toc li{padding:3px 0}
.prose{font-size:18px;line-height:1.95;color:var(--ink2)}
.prose h2{margin:56px 0 18px;font-size:clamp(23px,2.6vw,28px);line-height:1.45;color:var(--ink);scroll-margin-top:24px}
.prose h3{margin:36px 0 12px;font-size:21px;color:var(--ink)}
.prose p{margin:0 0 1.15em}
.prose strong{color:var(--gold-hi);font-weight:600}
.prose a{color:var(--gold);border-bottom:1px solid rgba(217,178,95,.4)}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1.3em}
.prose li{margin:.5em 0}
.prose blockquote{margin:1.5em 0;padding:4px 0 4px 22px;border-left:2px solid var(--gold);color:var(--ink)}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--bg2);padding:2px 6px;border:1px solid var(--line)}
.prose pre{background:var(--bg2);border:1px solid var(--line);padding:18px 20px;overflow-x:auto}
.prose pre code{border:0;padding:0;background:none}
.prose hr{border:0;border-top:1px solid var(--line);margin:48px 0}
.reader-foot{margin-top:56px;padding-top:32px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px}
.pn{width:100%;display:flex;justify-content:space-between;gap:20px;margin-top:24px;font-size:15px}
.qr{margin:0 0 32px;text-align:center}
.qr img{background:#fff;padding:10px}
.qr figcaption{font-size:14px;color:var(--mute)}

/* video page */
.video-page{padding-top:48px;padding-bottom:40px}
.video-page h1{margin:18px 0 28px;font-size:clamp(28px,4vw,42px);line-height:1.35;font-weight:600}
.embed{position:relative;aspect-ratio:16/9;background:#000;border:1px solid var(--line)}
.embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-info{max-width:760px;margin-top:32px}
.chapters{list-style:none;margin:0 0 24px;padding:0}
.chapters li{display:flex;gap:20px;padding:12px 0;border-top:1px solid var(--line);font-size:15px;color:var(--ink2)}
.tags{color:var(--mute);font-size:14px;margin:0 0 20px}

/* modal player */
.player{border:0;padding:0;background:transparent;max-width:min(1100px,94vw);width:100%;color:var(--ink)}
.player::backdrop{background:rgba(10,8,6,.88);backdrop-filter:blur(6px)}
.player[open]{animation:pop .35s cubic-bezier(.2,.7,.2,1)}
@keyframes pop{from{opacity:0;transform:scale(.96)}}
.player-box{display:flex;flex-direction:column;gap:14px}
.player-close{align-self:flex-end;font:inherit;font-size:14px;color:var(--ink);background:none;border:1px solid var(--line2);padding:8px 16px;min-height:44px;cursor:pointer}
.player-close:hover{border-color:var(--gold);color:var(--gold)}
.player-frame{position:relative;aspect-ratio:16/9;background:#000;border:1px solid var(--line)}
.player-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.player-title{margin:0;font-size:18px;color:var(--ink2)}

/* scroll reveal */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0ms)}
.js .reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none}
}
@media (max-width:640px){
  body{font-size:16px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{padding:22px 8px}
  .stat-n{font-size:38px}
  .row-side{align-items:flex-start;padding-right:0}
  .row::after{display:none}
  .block{padding-top:72px;padding-bottom:48px}
  .prose{font-size:17px}
}

.shot{margin:0 0 40px;text-align:center}.shot img{max-width:300px;width:100%;height:auto;border-radius:24px;border:1px solid var(--line2);box-shadow:0 24px 60px rgba(0,0,0,.4)}.shot figcaption{margin-top:12px;font-size:14px;color:var(--mute)}
.phone:has(img){aspect-ratio:auto}.phone img{height:auto;display:block}
.prose .table{overflow-x:auto;margin:0 0 1.5em;border:1px solid var(--line)}.prose table{border-collapse:collapse;width:100%;font-size:15px}.prose th,.prose td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}.prose th{color:var(--gold);font-weight:600;background:var(--bg2)}.prose tr:last-child td{border-bottom:0}

/* language switch */
.mainnav .lang{display:inline-flex;align-items:center;gap:6px;margin-left:10px;padding:8px 14px;min-height:40px;border:1px solid var(--line2);border-radius:999px;font-family:var(--label);font-size:13px;letter-spacing:.08em;color:var(--gold);transition:all .25s}
.mainnav .lang:hover{border-color:var(--gold);background:rgba(217,178,95,.08);color:var(--gold-hi)}
.mainnav .lang svg{transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.mainnav .lang:hover svg{transform:rotate(180deg)}
@media (max-width:640px){.mainnav .lang{margin-left:4px}}

/* English pages */
.lang-en .hero h1{font-family:var(--display);font-weight:600;letter-spacing:0;line-height:1.08;font-size:clamp(42px,6.6vw,88px)}
.lang-en .tagline{font-family:var(--serif-zh);font-style:normal;font-size:clamp(18px,2vw,22px);letter-spacing:.06em}
.lang-en .block h2,.lang-en .page-h{font-family:var(--display);font-weight:600;font-size:clamp(34px,4vw,50px)}
.lang-en .post h3,.lang-en .reader-head h1,.lang-en .video-page h1{font-family:var(--display);font-weight:600}
.lang-en .reader-head h1{font-size:clamp(32px,4.6vw,50px);line-height:1.15}
.lang-en .post h3{font-size:clamp(24px,2.7vw,32px);line-height:1.25}
.lang-en .quote p{font-family:var(--display);font-style:italic;font-weight:500}
.lang-en .about-title{font-family:var(--display);font-size:30px}
.lang-en body,.lang-en{font-family:Georgia,"Times New Roman",var(--serif-zh)}
.flow-en .flow-k{width:auto;min-width:48px;padding:0 14px;border-radius:999px;font-family:var(--label);font-size:14px;font-weight:500}
.reader-zh-title{margin:-6px 0 14px;font-size:18px;color:var(--mute)}
.notice{border:1px solid var(--line2);background:var(--bg2);padding:22px 24px;margin:0 0 36px}
.notice p{margin:0 0 16px;color:var(--ink2)}
.notice-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:640px){.top{position:relative}.mainnav .lang{position:absolute;top:22px;right:clamp(20px,5vw,64px);margin:0}}