:root{color-scheme:dark;--bg:#101d24;--panel:#172830;--text:#edf2f0;--muted:#adc0c3;--accent:#a8ebd2;--line:#34464b;--gold:#edc17e;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.75}
*{box-sizing:border-box}html{scroll-padding-top:1.5rem}body{margin:0;background:var(--bg);color:var(--text);border-top:4px solid var(--gold)}a{color:var(--accent);text-underline-offset:.22em;overflow-wrap:anywhere}a:hover{color:#fff}a:focus-visible{outline:3px solid var(--gold);outline-offset:5px;border-radius:2px}.shell{max-width:1200px;margin:auto;padding:0 2rem}header{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding:2.1rem 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:1rem;text-decoration:none;color:var(--text);font-weight:850;letter-spacing:.13em;font-size:1.25rem}.brand img{border-radius:13px;flex:none}.brand small{display:block;font-size:.75rem;color:var(--muted);font-weight:650;letter-spacing:.16em;margin-top:.08rem}.language{border:1px solid var(--line);padding:.55rem 1rem;text-decoration:none;font-size:.9375rem;white-space:nowrap}.language span{margin-left:.55rem}.layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:4.2rem;padding:3rem 0 4rem}aside{align-self:start;position:sticky;top:2rem}nav{display:flex;flex-direction:column;gap:.5rem}nav a{padding:.6rem .85rem;text-decoration:none;color:var(--muted);border-left:2px solid transparent;font-size:.9375rem}nav a[aria-current=page]{background:var(--panel);border-color:var(--accent);color:var(--text);font-weight:650}nav a:hover{background:var(--panel)}.side-note{padding:.75rem 1rem;border-top:1px solid var(--line);margin-top:2rem;color:var(--muted);font-size:.875rem;line-height:1.6}main{min-width:0;max-width:780px}h1{font-size:clamp(2rem,3.6vw,3.15rem);line-height:1.15;letter-spacing:-.045em;margin:0 0 1.25rem;font-weight:760;text-wrap:balance}h1+p{font-size:1rem;color:var(--muted);margin-bottom:2.5rem}h2{font-size:1.35rem;line-height:1.35;letter-spacing:-.015em;margin:2.8rem 0 .8rem;padding-top:1.4rem;border-top:1px solid var(--line);scroll-margin-top:2rem}p{margin:.85rem 0}ul,ol{padding-left:1.4rem}li{padding:.25rem 0}article>h2:first-of-type{margin-top:1.5rem}footer{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.75rem;border-top:1px solid var(--line);padding:1.7rem 0 2rem;font-size:.875rem;color:var(--muted)}.skip{position:absolute;left:1rem;top:-8rem;background:var(--gold);color:#101d24;padding:.7rem 1rem;z-index:10}.skip:focus{top:1rem}.skip:hover{color:#101d24}@media(max-width:800px){.shell{padding:0 1.25rem}header{padding:1.3rem 0}.layout{grid-template-columns:1fr;gap:1.8rem;padding:1.5rem 0 3rem}aside{position:static}nav{flex-direction:row;flex-wrap:wrap;gap:.25rem}nav a{font-size:.875rem;padding:.45rem .65rem;border-left:0;border-bottom:2px solid transparent}nav a[aria-current=page]{border-bottom-color:var(--accent)}.side-note{display:none}h1{font-size:2.25rem}h2{margin-top:2rem}.brand{font-size:1.05rem;gap:.7rem}.brand img{width:46px;height:46px}.brand small{font-size:.75rem;letter-spacing:.06em}.language{padding:.4rem .65rem}}@media(max-width:380px){.brand{letter-spacing:.06em}.shell{padding:0 1rem}header{gap:.6rem}.brand img{width:40px;height:40px}.brand small{font-size:.75rem}.language{font-size:.875rem}h1{font-size:2rem}}@media print{:root{color-scheme:light}body{background:white;color:black;border:0}.shell{padding:0;max-width:none}header{padding:.5rem 0}.layout{display:block;padding:1rem 0}aside,.language,.skip{display:none}a{color:inherit}h1,h2{break-after:avoid}h2{border-color:#aaa}p,li{orphans:3;widows:3}h1+p,footer,.brand small{color:#333}main{max-width:none}footer{border-color:#aaa}.brand{color:black}}
/* Native language menu: no script, cookies or stored language preference. */
.languages{position:relative;max-width:100%;flex:0 1 auto;font-size:.9375rem}.languages summary{cursor:pointer;border:1px solid var(--line);padding:.55rem .8rem;overflow-wrap:anywhere}.languages summary:focus-visible{outline:3px solid var(--gold);outline-offset:4px}.languages nav{position:absolute;right:0;top:100%;z-index:20;min-width:16rem;max-width:calc(100vw - 2rem);padding:.5rem;background:var(--panel);border:1px solid var(--line);box-shadow:0 10px 30px #0006;display:flex;flex-direction:column;flex-wrap:nowrap;max-height:65vh;overflow-y:auto}.languages nav a{display:block;border:0;padding:.5rem .8rem}.languages nav a[aria-current=true]{color:var(--text);font-weight:700;background:var(--bg)}html:lang(ja) h1,html:lang(ko) h1,html:lang(zh-Hans) h1{letter-spacing:normal;line-height:1.35}html:lang(ko) article{word-break:keep-all;overflow-wrap:anywhere}@media(max-width:600px){header{flex-wrap:wrap}.languages{margin-left:auto}.brand small{letter-spacing:.04em}.languages nav{flex-direction:column}}@media print{.languages{display:none}}
h1,h2{overflow-wrap:anywhere;hyphens:auto}
html:lang(ja) article,html:lang(zh-Hans) article{line-break:strict}html:lang(ja) h1,html:lang(ja) h2,html:lang(zh-Hans) h1,html:lang(zh-Hans) h2{overflow-wrap:normal;word-break:normal}