:root{--bg:#fafcfc;--ink:#0d1b1e;--mute:#4f6368;--line:#d3e0e2;--t:#00b5bf;--tx:#007f87;--tdark:#008f98;--on-t:#042a2d;--panel:#ffffff;--soft:#eaf6f7}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0b1618;--ink:#e8f1f2;--mute:#9bb2b6;--line:#243b3f;--t:#2cd0da;--tx:#2cd0da;--tdark:#1fb9c3;--panel:#102124;--soft:#10282b}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5rem}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.65 "Public Sans",system-ui,sans-serif;overflow-x:clip}
a{color:var(--tx)}
a:focus-visible,button:focus-visible{outline:3px solid var(--t);outline-offset:3px;border-radius:6px}
.wrap{max-width:62rem;margin:0 auto;padding:0 1.25rem}
.bar{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.top{display:flex;justify-content:space-between;align-items:center;padding:1rem 0;gap:1rem}
.logo{display:flex;align-items:center;gap:.45rem;text-decoration:none;color:var(--ink);font-size:1.35rem;letter-spacing:-.01em}
.logo i{width:1.05em;height:1.05em;border-radius:50%;background:var(--t);display:block;transition:transform .25s}
.logo b{font-weight:800}.logo span{font-weight:300;margin-left:-.35rem}
.logo:hover i{transform:scale(1.2)}
.logo:hover b,.logo:hover span{color:var(--tx)}
.right{display:flex;align-items:center;gap:.5rem}
.back{color:var(--mute);text-decoration:none;font-size:.95rem;padding:.4rem .8rem;border-radius:999px;transition:background .2s,color .2s}
.back:hover,.back:focus-visible{background:var(--t);color:var(--on-t)}
.lang{display:flex;gap:.2rem;padding-left:.6rem;border-left:1px solid var(--line)}
.lang button{font:600 .8rem/1 "Public Sans",system-ui,sans-serif;letter-spacing:.06em;color:var(--mute);background:transparent;border:1px solid transparent;border-radius:999px;padding:.4rem .6rem;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.lang button:hover,.lang button:focus-visible{background:var(--t);color:var(--on-t)}
.lang button[aria-pressed="true"]{border-color:var(--t);color:var(--tx)}
.lang button[aria-pressed="true"]:hover{color:var(--on-t)}

.art{max-width:44rem;margin:0 auto;padding:3rem 0 4rem}
.tag{display:inline-block;font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--tx);margin:0 0 1rem}
.tag::before{content:"";display:inline-block;width:.55rem;height:.55rem;border-radius:50%;background:var(--t);margin-right:.5rem}
.art h1{font-size:clamp(2rem,5.5vw,3.2rem);line-height:1.08;font-weight:800;letter-spacing:-.025em;margin:0 0 1rem}
.stand{color:var(--mute);font-size:1.2rem;line-height:1.5;margin:0 0 1.2rem}
.lnote{display:none;background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:.7rem 1rem;font-size:.92rem;color:var(--mute);margin:0 0 2rem}
.lnote.on{display:block}
.body{font-family:"Literata",Georgia,serif;font-size:1.08rem;line-height:1.8;margin-top:2rem}
.body p{margin:0 0 1.25rem}
.body h2{font:800 1.55rem/1.2 "Public Sans",system-ui,sans-serif;letter-spacing:-.015em;margin:2.6rem 0 .9rem}
.body h3{font:600 1.15rem/1.3 "Public Sans",system-ui,sans-serif;margin:2rem 0 .6rem}
.body ul{margin:0 0 1.25rem;padding-left:1.3rem}
.body li{margin:.35rem 0}
.body blockquote{margin:2rem 0;padding:.4rem 0 .4rem 1.3rem;border-left:4px solid var(--t);font-size:1.2rem;line-height:1.6;font-weight:500}
.body blockquote p{margin:0}
.part{font:600 .8rem/1 "Public Sans",system-ui,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--on-t);background:var(--t);display:inline-block;padding:.5rem .9rem;border-radius:999px;margin:3rem 0 1.4rem}
.body .part+h2{margin-top:0}
fig,figure{margin:2rem 0}
figure img{display:block;width:100%;height:auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:.4rem}
figcaption{font:400 .85rem/1.5 "Public Sans",system-ui,sans-serif;color:var(--mute);margin-top:.6rem}
figcaption b{color:var(--ink)}
.eq{font:400 1.05rem/1.5 "Public Sans",system-ui,sans-serif;background:var(--soft);border:1px solid var(--line);border-left:4px solid var(--t);border-radius:10px;padding:.8rem 1.1rem;margin:1.2rem 0;overflow-x:auto}
.note{font:400 .97rem/1.6 "Public Sans",system-ui,sans-serif;background:var(--soft);border:1px solid var(--t);border-radius:12px;padding:1rem 1.2rem;margin:1.5rem 0}
.note p{margin:0 0 .6rem}.note p:last-child{margin:0}
.tw{overflow-x:auto;margin:1.5rem 0;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;font:400 .9rem/1.45 "Public Sans",system-ui,sans-serif;min-width:30rem}
th,td{text-align:left;padding:.65rem .85rem;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--soft);font-weight:600}
tr:last-child td{border-bottom:0}
tbody tr:hover td{background:var(--soft)}
.refs{font:400 .9rem/1.55 "Public Sans",system-ui,sans-serif;color:var(--mute);margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--line)}
.refs h2{font-size:1.1rem;margin:0 0 .8rem;color:var(--ink)}
.refs p,.refs li{margin:0 0 .6rem;font-family:inherit;font-size:inherit;line-height:inherit}
.refs ul{list-style:none;padding:0}
.end{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;margin-top:3rem}
.btn{display:inline-block;background:var(--ink);color:var(--bg);padding:.85rem 1.5rem;border-radius:999px;text-decoration:none;font-weight:600;font-family:"Public Sans",system-ui,sans-serif;border:1px solid var(--ink);transition:background .2s,color .2s,border-color .2s,transform .2s}
.btn:hover,.btn:focus-visible{background:var(--t);border-color:var(--t);color:var(--on-t);transform:translateY(-2px)}
footer{border-top:1px solid var(--line);padding:2rem 0 3rem;color:var(--mute);font-size:.9rem}
@media (max-width:640px){.art{padding-top:2rem}.back{padding:.4rem .5rem}.logo{font-size:1.15rem}}
@media print{.bar,.end,footer,.lang{display:none}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}