/* marcoparet.com/zh-cn — nessuna risorsa esterna: solo font di sistema cinesi */
:root{
  --ink:#16223A;      /* indaco profondo */
  --paper:#F3F5F2;    /* porcellana fredda */
  --jade:#2F6F62;     /* verde celadon */
  --jade-soft:#DCE8E3;
  --slate:#566174;
  --rule:#D3DAD5;
  --white:#FFFFFF;
  --serif:"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC","Noto Serif SC","SimSun",serif;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.85;letter-spacing:.02em}
a{color:var(--jade);text-underline-offset:3px}
a:hover{color:var(--ink)}
:focus-visible{outline:2px solid var(--jade);outline-offset:3px}

/* header */
.top{position:sticky;top:0;z-index:5;background:var(--paper);border-bottom:1px solid var(--rule)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:.5rem 1rem;flex-wrap:wrap;max-width:960px;margin:0 auto;padding:.7rem 16px .3rem}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--ink);text-decoration:none;font-family:var(--serif);font-size:1.05rem;font-weight:700}
.brand small{display:block;font-family:var(--sans);font-weight:400;font-size:.72rem;color:var(--slate);letter-spacing:.04em}
.mark .eye{width:30px;height:30px;color:var(--jade);display:block}
.nav{display:flex;gap:1.2rem;overflow-x:auto;scrollbar-width:none;padding:.35rem 16px .6rem;max-width:960px;margin:0 auto;font-size:.92rem;white-space:nowrap}
.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--slate);text-decoration:none;padding-bottom:.15rem;border-bottom:2px solid transparent}
.nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--jade)}

/* selettore lingua */
.langs{display:flex;gap:.15rem .7rem;flex-wrap:wrap;font-size:.8rem;font-family:var(--sans)}
.langs a{color:var(--slate);text-decoration:none;padding:.1rem 0;border-bottom:1px solid transparent}
.langs a[aria-current]{color:var(--ink);border-bottom-color:var(--jade)}
.langs a:hover{color:var(--jade)}

/* lingue latine e cirillico: niente spaziatura CJK, serif e sans di sistema */
html:not([lang^="zh"]){
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua","Noto Serif",Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans",Arial,sans-serif;
}
html:not([lang^="zh"]) body{letter-spacing:0;line-height:1.7}
html:not([lang^="zh"]) h1,html:not([lang^="zh"]) .hero h1{letter-spacing:0}
html:not([lang^="zh"]) .hero h1{font-size:2.1rem}
@media (min-width:760px){html:not([lang^="zh"]) .hero h1{font-size:2.8rem}}

/* hero (solo home): l'occhio è l'unico elemento forte */
.hero{max-width:960px;margin:0 auto;padding:3rem 16px 2rem;display:grid;grid-template-columns:1fr;gap:1.5rem;align-items:center}
.hero-eye{order:-1;justify-self:start}
.hero-eye .eye{width:132px;height:132px;color:var(--ink)}
.kicker{margin:0 0 .6rem;color:var(--jade);font-size:.92rem}
.hero h1{font-family:var(--serif);font-size:2.3rem;line-height:1.35;margin:0 0 1rem;font-weight:700;letter-spacing:.04em}
@media (min-width:760px){
  .hero{grid-template-columns:1.4fr 1fr;padding:5rem 16px 3rem}
  .hero-eye{order:0;justify-self:center}
  .hero-eye .eye{width:260px;height:260px}
  .hero h1{font-size:3.1rem}
}
@media (prefers-reduced-motion:no-preference){
  .hero-eye .eye circle:last-of-type{animation:blink 7s ease-in-out infinite}
  @keyframes blink{0%,92%,100%{opacity:1}95%{opacity:.15}}
}

/* contenuto */
main{max-width:960px;margin:0 auto;padding:1.5rem 16px 3rem}
main>*{max-width:720px}
main>.grid,main>.split{max-width:none}
h1{font-family:var(--serif);font-size:2rem;line-height:1.4;margin:1.5rem 0 1rem;letter-spacing:.04em}
h2{font-family:var(--serif);font-size:1.4rem;line-height:1.5;margin:2.6rem 0 .8rem;padding-top:1.2rem;border-top:1px solid var(--rule)}
h3{font-family:var(--serif);font-size:1.15rem;margin:0 0 .3rem}
p{margin:0 0 1.1rem}
.lead{font-size:1.1rem;color:var(--ink)}
.hero .lead{color:var(--slate)}
ul,ol{padding-left:1.2rem}
li{margin-bottom:.5rem}
.facts{list-style:none;padding:0}
.facts li{padding:.55rem 0;border-bottom:1px solid var(--rule);margin:0}
.note{color:var(--slate);font-size:.92rem}
.small{font-size:.82rem}
.next{margin-top:2.5rem;font-family:var(--serif)}

blockquote{margin:1.8rem 0;padding:1rem 1.2rem;background:var(--jade-soft);border-left:3px solid var(--jade);font-family:var(--serif);font-size:1.15rem;line-height:1.7}
blockquote cite{display:block;margin-top:.5rem;font-family:var(--sans);font-size:.85rem;font-style:normal;color:var(--slate)}

.paths .path{padding:1rem 0;border-bottom:1px solid var(--rule)}
.paths .path h3 a{color:var(--ink);text-decoration-color:var(--jade)}
.paths .path p{margin:0;color:var(--slate)}
.split{display:grid;gap:0 2rem}
@media (min-width:760px){.split{grid-template-columns:1fr 1fr}}

dl.states dt,dl.world dt,dl.contact dt{font-family:var(--serif);font-weight:700;margin-top:1.1rem}
dl.states dd,dl.world dd,dl.contact dd{margin:.2rem 0 0;color:var(--ink)}
dl.world{margin:0}
dl.world dt{color:var(--jade)}

.timeline{list-style:none;padding:0;border-left:2px solid var(--jade);margin-left:.4rem}
.timeline li{padding:0 0 1rem 1.1rem;position:relative}
.timeline li span{display:block;font-family:var(--serif);font-weight:700;color:var(--jade)}

table.compare{width:100%;border-collapse:collapse;font-size:.95rem;margin:1rem 0}
.compare th,.compare td{text-align:left;vertical-align:top;padding:.6rem .5rem;border-bottom:1px solid var(--rule)}
.compare thead th{font-family:var(--serif);border-bottom:2px solid var(--ink)}
.compare tbody th{color:var(--slate);font-weight:400;white-space:nowrap}

.books{list-style:none;padding:0}
.books li{padding:.6rem 0;border-bottom:1px solid var(--rule);margin:0}

/* video */
figure{margin:1.6rem 0}
.video video{display:block;width:100%;aspect-ratio:16/9;background:var(--ink);border-radius:4px}
.video figcaption{padding:.55rem 0 0;font-size:.92rem;color:var(--slate)}
.video figcaption span{display:block}
.video figcaption strong{display:block;color:var(--ink);font-family:var(--serif);font-size:1rem}
.grid{display:grid;gap:0 1.4rem}
@media (min-width:760px){.grid{grid-template-columns:1fr 1fr}}
.photo img{display:block;width:100%;height:auto;border-radius:4px}
.photo figcaption{font-size:.88rem;color:var(--slate);padding-top:.4rem}

/* footer */
.foot{border-top:1px solid var(--rule);padding:2rem 16px 3rem;max-width:960px;margin:0 auto;color:var(--slate);font-size:.92rem}
.foot p{margin:.3rem 0}

/* pagina di scelta lingua */
.chooser main{max-width:420px;margin:0 auto;padding:4rem 16px;text-align:center}
.chooser .eye{width:96px;height:96px;color:var(--ink)}
.chooser h1{font-family:var(--serif);letter-spacing:0}
.choose{list-style:none;padding:0;margin:2rem 0 0}
.choose li{border-top:1px solid var(--rule);margin:0}
.choose li:last-child{border-bottom:1px solid var(--rule)}
.choose a{display:block;padding:.9rem 0;font-size:1.15rem;color:var(--ink);text-decoration:none}
.choose a:hover{color:var(--jade)}

/* scelta sottotitoli sotto ogni video */
.cc-pick{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem;margin-top:.5rem;font-size:.82rem}
.cc-pick b{font-weight:600;color:var(--slate);margin-right:.2rem}
.cc-pick button{font:inherit;border:1px solid var(--rule);background:var(--white);color:var(--ink);border-radius:999px;padding:.15rem .65rem;cursor:pointer;min-height:30px}
.cc-pick button[aria-pressed="true"]{background:var(--jade);border-color:var(--jade);color:var(--white)}
.cc-pick button:hover{border-color:var(--jade)}
.foot .inst{display:flex;flex-wrap:wrap;gap:.2rem 1.2rem;font-family:var(--serif);color:var(--ink)}

/* cifre chiave e invito all'azione */
.stats{display:flex;flex-wrap:wrap;gap:.4rem;margin:1.2rem 0 0}
.stats span{border:1px solid var(--rule);background:var(--white);border-radius:4px;padding:.3rem .6rem;font-size:.9rem}
.cta{max-width:960px;margin:0 auto 1rem}
.cta a{display:inline-block;background:var(--ink);color:var(--paper);text-decoration:none;padding:.7rem 1.3rem;border-radius:4px;font-family:var(--serif)}
.cta a:hover{background:var(--jade);color:var(--white)}

/* identità in apertura */
.kicker-id{display:flex;flex-direction:column;gap:.1rem;margin:0 0 1.2rem;color:var(--slate);font-size:.95rem}
.kicker-id strong{font-family:var(--serif);font-size:1.25rem;color:var(--ink)}
.kicker-id span:last-child{color:var(--jade)}
.neuro-applied{background:var(--white);border:1px solid var(--rule);border-radius:4px;padding:.2rem 1.2rem 1rem;margin-top:2rem}
.neuro-applied h2{border-top:0;padding-top:.6rem;margin-top:.6rem}

/* v6 */
.hero-photo{order:-1;justify-self:start}
.hero-photo img{display:block;width:150px;height:150px;border-radius:50%;object-fit:cover;box-shadow:0 0 0 1px var(--rule),0 0 0 12px var(--paper),0 0 0 13px var(--rule),0 0 0 26px var(--paper),0 0 0 27px var(--rule)}
@media (min-width:760px){.hero-photo{order:0;justify-self:center}.hero-photo img{width:300px;height:300px}}
.h-sub{font-family:var(--serif);font-size:1.4rem;line-height:1.3;color:var(--jade);margin:-.3rem 0 1.1rem}
.hero .lead+p,.hero .lead+p+p{color:var(--ink)}
.neuro-intro{background:var(--white);border:1px solid var(--rule);border-radius:4px;padding:.2rem 1.2rem 1rem;margin:1rem 0 2rem}
.neuro-intro h2{border-top:0;padding-top:.6rem;margin-top:.6rem}
.world-grid{display:grid;grid-template-columns:1fr;gap:1.4rem;margin:1rem 0 2rem}
@media (min-width:640px){.world-grid{grid-template-columns:1fr 1fr}}
@media (min-width:960px){.world-grid{grid-template-columns:1fr 1fr 1fr}}
.world-grid figure{margin:0}
.world-grid img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:4px;background:var(--rule)}
.world-grid figcaption{font-size:.9rem;line-height:1.5;margin-top:.45rem;color:var(--slate)}
.world-grid figcaption strong{display:block;font-family:var(--serif);color:var(--jade);font-size:1rem}
@media (max-width:759px){.hero-photo{margin:14px 0 0 14px}}

/* v9 */
@media (min-width:760px){.nav{flex-wrap:wrap;white-space:normal;overflow:visible;row-gap:.35rem}}
figure.diagram{margin:1.4rem 0;overflow-x:auto;-webkit-overflow-scrolling:touch}
figure.diagram img{display:block;width:100%;min-width:620px;height:auto;border:1px solid var(--rule);border-radius:4px;background:var(--white)}
.yt-frame{position:relative;aspect-ratio:16/9;background:#000}
.yt-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
ul.papers li{margin:.3rem 0}
figure.wechat{margin:1rem 0 1.5rem}
figure.wechat img{display:block;width:220px;max-width:70%;height:auto;border-radius:8px;border:1px solid var(--rule)}
figure.wechat figcaption{font-size:.9rem;color:var(--slate);margin-top:.4rem}
.lineage{font-family:var(--serif);font-size:1.12rem;color:var(--jade);border-left:3px solid var(--jade);padding-left:.9rem}
ul.lineage-list{list-style:none;padding:0;margin:1rem 0}
ul.lineage-list li{border-left:3px solid var(--jade);padding:.15rem 0 .15rem .9rem;margin:.6rem 0}
.ytl{position:absolute;inset:0;width:100%;height:100%;border:0;padding:0;cursor:pointer;background:#000 center/cover no-repeat}
.ytl::after{content:"";position:absolute;left:50%;top:50%;width:64px;height:44px;margin:-22px 0 0 -32px;border-radius:10px;background:rgba(22,34,58,.85)}
.ytl::before{content:"";position:absolute;left:50%;top:50%;margin:-10px 0 0 -6px;border-style:solid;border-width:10px 0 10px 17px;border-color:transparent transparent transparent #fff;z-index:1}
@media (min-width:960px){.grid.testimonials{grid-template-columns:1fr 1fr 1fr}}
.creds{display:grid;grid-template-columns:1fr;gap:.2rem 1.6rem}
@media (min-width:760px){.creds{grid-template-columns:1fr 1fr}}
.creds h3{font-family:var(--serif);color:var(--jade);font-size:1.05rem;margin:1rem 0 .3rem}
.creds ul{margin:0;padding-left:1.1rem}
.creds li{margin:.25rem 0}