:root{--ink:#0b0b0b;--paper:#fff;--red:#e3001b;--redd:#b40016;--grey:#f1f1ef;--line:#d9d9d6;--mute:#555;
--f:"Helvetica Neue",Helvetica,Arial,"Nimbus Sans","Liberation Sans",system-ui,sans-serif;--w:1240px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.6 var(--f);overflow-x:hidden}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration-color:var(--red);text-decoration-thickness:2px;text-underline-offset:3px}
a:hover{color:var(--red)}
.wrap{max-width:var(--w);margin:0 auto;padding:0 16px}
@media(min-width:760px){.wrap{padding:0 32px}}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:8px;background:var(--red);color:#fff;padding:6px 10px;z-index:9}
/* top bar */
.bar{background:var(--ink);color:#fff;font-size:13px}
.bar .wrap{display:flex;justify-content:space-between;gap:12px;padding-top:7px;padding-bottom:7px}
.bar a{color:#fff;text-decoration:none;font-weight:700}
.bar a:hover{color:var(--red)}
.bar .lang a{border:1px solid #fff;padding:1px 8px}
.mast{border-bottom:4px solid var(--ink);background:var(--paper);position:relative}
.mast .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo svg{width:26px;height:56px;flex:none}
.logo b{display:block;font-size:26px;line-height:1;letter-spacing:-.03em;font-weight:800}
.logo small{display:block;font-size:12px;color:var(--mute);margin-top:4px;letter-spacing:.02em}
.menu summary{list-style:none;cursor:pointer;font-weight:700;border:2px solid var(--ink);padding:6px 14px}
.menu summary::-webkit-details-marker{display:none}
.menu[open] summary{background:var(--ink);color:#fff}
.menu nav{position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:4px solid var(--ink);z-index:5;padding:8px 16px 16px}
.menu nav a{display:block;padding:10px 0;border-bottom:1px solid var(--line);text-decoration:none;font-weight:700;font-size:18px}
.menu nav a[aria-current]{color:var(--red)}
.menu nav a.night{color:var(--red)}
.fullnav{display:none}
@media(min-width:1000px){.menu{display:none}.fullnav{display:flex;gap:22px;flex-wrap:wrap}
.fullnav a{text-decoration:none;font-weight:700;font-size:15px;padding:4px 0;border-bottom:3px solid transparent}
.fullnav a:hover,.fullnav a[aria-current]{border-color:var(--red);color:var(--ink)}
.fullnav a.night{background:var(--ink);color:#fff;padding:4px 10px;border:0}
.fullnav a.night:hover,.fullnav a.night[aria-current]{background:var(--red);color:#fff}}
/* hero */
.hero{border-bottom:4px solid var(--ink)}
.hero .wrap{display:grid;gap:24px;padding-top:36px;padding-bottom:36px}
@media(min-width:900px){.hero .wrap{grid-template-columns:7fr 5fr;align-items:end}}
.hero h1{font-size:clamp(2.4rem,7vw,5.6rem);line-height:.95;letter-spacing:-.045em;margin:0;font-weight:800}
.hero h1 em{font-style:normal;color:var(--red)}
.hero .lead{font-size:1.2rem;max-width:36em;margin:20px 0 0}
.hero svg{border:4px solid var(--ink)}
.label{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.06em;color:var(--red);margin-bottom:12px}
/* page head */
.phead{border-bottom:4px solid var(--ink)}
.phead .wrap{padding-top:24px;padding-bottom:28px}
.phead h1{font-size:clamp(2.1rem,5.6vw,4.4rem);line-height:1;letter-spacing:-.04em;margin:6px 0 0;font-weight:800;max-width:17em}
.phead .lead{font-size:1.18rem;max-width:40em;margin:18px 0 0;color:#222}
.crumbs{font-size:13px;color:var(--mute);display:flex;flex-wrap:wrap;gap:6px}
.crumbs a{color:var(--mute)}
/* grid & cards */
.sec{padding:40px 0}
.sechead{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:4px 12px;border-top:4px solid var(--ink);padding-top:10px;margin:0 0 18px}
.sechead h2{font-size:clamp(1.6rem,3.4vw,2.6rem);letter-spacing:-.03em;margin:0;line-height:1.05}
.sechead a{font-weight:700;font-size:15px}
.grid{display:grid;gap:0;grid-template-columns:1fr;border-left:2px solid var(--ink);border-top:2px solid var(--ink)}
@media(min-width:640px){.grid{grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.grid.g3{grid-template-columns:1fr 1fr 1fr}}
.card{display:flex;flex-direction:column;gap:8px;padding:20px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);text-decoration:none;min-height:190px;background:var(--paper)}
.card .n{font-size:13px;font-weight:800;color:var(--red)}
.card h3{font-size:1.45rem;line-height:1.1;letter-spacing:-.025em;margin:0}
.card p{margin:0;color:#333;font-size:.97rem}
.card:hover{background:var(--ink);color:#fff}.card:hover p{color:#ddd}.card:hover .n{color:#fff}
.card.dark{background:var(--ink);color:#fff}.card.dark p{color:#ddd}.card.dark:hover{background:var(--red)}
.band{background:var(--ink);color:#fff}
.band .wrap{display:grid;gap:24px;padding-top:40px;padding-bottom:40px}
@media(min-width:900px){.band .wrap{grid-template-columns:1fr 1fr;align-items:center}}
.band h2{font-size:clamp(1.8rem,4vw,3rem);line-height:1;letter-spacing:-.035em;margin:0 0 12px}
.band a{color:#fff}
.band .btn{display:inline-block;background:var(--red);color:#fff;text-decoration:none;font-weight:800;padding:10px 18px;margin:8px 10px 0 0}
.band .btn.alt{background:transparent;border:2px solid #fff}
/* article */
.art{display:grid;gap:36px;padding:36px 0 56px}
@media(min-width:960px){.art{grid-template-columns:minmax(0,1fr) 300px}}
.prose{max-width:720px;min-width:0}
.prose h2{font-size:1.7rem;letter-spacing:-.025em;line-height:1.1;margin:1.8em 0 .5em;padding-top:10px;border-top:2px solid var(--ink)}
.prose h3{font-size:1.2rem;margin:1.4em 0 .3em}
.prose p,.prose li{hyphens:auto;overflow-wrap:break-word}
.prose .intro{font-size:1.2rem;font-weight:500}
.prose .figure{margin:0 0 26px;border:4px solid var(--ink)}
.prose table{border-collapse:collapse;width:100%;font-size:.95rem}
.tablewrap{overflow-x:auto;border:2px solid var(--ink)}
.prose th,.prose td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{background:var(--ink);color:#fff}
.prose .src{font-size:.9rem;color:var(--mute);border-top:1px solid var(--line);padding-top:10px;margin-top:2em}
.faq details{border-top:2px solid var(--ink);padding:12px 0}
.faq summary{font-weight:800;cursor:pointer}
.faq details p{margin:.6em 0 0}
.side{min-width:0}
.side .box{border:2px solid var(--ink);padding:18px;margin-bottom:20px}
.side h2{font-size:1rem;margin:0 0 10px;color:var(--red)}
.side ul{list-style:none;margin:0;padding:0}
.side li{border-top:1px solid var(--line);padding:8px 0}
.side li:first-child{border-top:0}
.side a{text-decoration:none;font-weight:700}
.side .xxx{background:var(--ink);color:#fff;border-color:var(--ink)}
.side .xxx p{margin:0;font-size:.95rem}
/* footer */
.foot{background:var(--ink);color:#fff;margin-top:0;padding:40px 0 24px}
.foot .cols{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:760px){.foot .cols{grid-template-columns:2fr 1fr 1fr 1fr}}
.foot h2{font-size:1rem;color:var(--red);margin:0 0 8px}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{margin:4px 0}
.foot a{color:#fff;text-decoration:none}.foot a:hover{color:var(--red)}
.foot .colo{border-top:1px solid #333;margin-top:28px;padding-top:14px;font-size:13px;color:#bbb}