/* KnowHow Desk: a three-column, community-feed layout with its own look (teal on deep slate). */
:root{color-scheme:dark light;
 --bg:#0d171c;--s1:#122127;--s2:#172a32;--line:rgba(148,190,200,.14);--line2:rgba(148,190,200,.26);
 --text:#e6f1f3;--text2:#b7ccd2;--mut:#86a2aa;--acc:#14b8a6;--acc2:#5eead4;--warn:#f59e0b;
 --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--r:14px}
@media(prefers-color-scheme:light){:root{--bg:#f3f8f8;--s1:#ffffff;--s2:#eaf3f3;--line:rgba(15,60,70,.12);--line2:rgba(15,60,70,.22);--text:#0f2a30;--text2:#2f4b53;--mut:#5b7a82;--acc:#0d9488;--acc2:#0f766e}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--acc2);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.25;margin:0}
.top{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{max-width:1240px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--text);letter-spacing:-.2px}.brand:hover{text-decoration:none}
.brand img{border-radius:9px;display:block}
.search{flex:1;max-width:520px}
.search input{width:100%;background:var(--s1);border:1px solid var(--line2);color:var(--text);border-radius:999px;padding:9px 16px;font:inherit;font-size:15px}
.search input:focus{outline:2px solid color-mix(in srgb,var(--acc) 60%,transparent);border-color:transparent}
.rss{margin-left:auto;font-size:13px;color:var(--mut);border:1px solid var(--line2);border-radius:999px;padding:4px 12px}
.shell{max-width:1240px;margin:0 auto;padding:22px 20px 48px;display:grid;grid-template-columns:230px minmax(0,1fr) 290px;gap:24px;align-items:start}
.left,.right{position:sticky;top:78px}
.lbl{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--mut);margin:0 10px 6px}
.topic{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;color:var(--text2);font-size:15px}
.topic:hover{background:var(--s2);text-decoration:none;color:var(--text)}
.topic.on{background:var(--s2);color:var(--text);font-weight:650;box-shadow:inset 3px 0 0 var(--acc)}
.topic .tn{flex:1}.topic .n{font-size:12px;color:var(--mut);background:var(--s1);border:1px solid var(--line);border-radius:99px;padding:0 8px}
.dot{width:9px;height:9px;border-radius:50%;flex:none;display:inline-block}
.card{background:var(--s1);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;margin-bottom:14px}
.card h2{font-size:15px;margin-bottom:8px}.card p{margin:0 0 8px;color:var(--text2);font-size:14.5px;line-height:1.55}
.more{font-size:14px;font-weight:600}
.mini{display:flex;gap:9px;align-items:flex-start;padding:7px 0;color:var(--text2);font-size:14px;line-height:1.4;border-top:1px solid var(--line)}
.mini:first-of-type{border-top:0}.mini .dot{margin-top:6px}.mini:hover{color:var(--text);text-decoration:none}
.head{margin-bottom:18px}.head h1{font-size:30px;letter-spacing:-.4px;margin:8px 0 6px}.sub{margin:0;color:var(--mut)}
.chip{display:inline-block;font-size:12px;font-weight:700;color:var(--c,var(--acc2));border:1px solid color-mix(in srgb,var(--c,var(--acc)) 45%,transparent);background:color-mix(in srgb,var(--c,var(--acc)) 12%,transparent);border-radius:99px;padding:1px 10px}
.chip:hover{text-decoration:none}
.meta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;color:var(--mut);font-size:13.5px}
.post{background:var(--s1);border:1px solid var(--line);border-radius:var(--r);padding:18px 22px;margin-bottom:14px;transition:border-color .15s,transform .15s}
.post:hover{border-color:var(--line2);transform:translateY(-1px)}
.post h2{font-size:21px;margin:10px 0 8px;letter-spacing:-.2px}.post h2 a{color:var(--text)}.post h2 a:hover{color:var(--acc2);text-decoration:none}
.ans{margin:0 0 10px;color:var(--text2);font-size:15.5px}.ans b{color:var(--text)}
.go{font-size:14.5px;font-weight:650}
.empty{background:var(--s1);border:1px dashed var(--line2);border-radius:var(--r);padding:44px 20px;text-align:center;color:var(--mut)}
.pager{display:flex;gap:14px;justify-content:center;align-items:center;margin:20px 0;color:var(--mut)}
.pager a{border:1px solid var(--line2);border-radius:99px;padding:6px 16px;color:var(--text)}
.crumbs{font-size:13.5px;color:var(--mut);margin:0 0 12px}
.full{background:var(--s1);border:1px solid var(--line);border-radius:var(--r);padding:28px 32px}
.full h1{font-size:34px;letter-spacing:-.5px;margin:12px 0 18px}
.full h2{font-size:22px;margin:30px 0 10px;letter-spacing:-.2px}
.full p{margin:0 0 14px;color:var(--text2);font-size:17px}
.callout{border:1px solid color-mix(in srgb,var(--acc) 45%,transparent);background:color-mix(in srgb,var(--acc) 10%,transparent);border-radius:12px;padding:14px 18px;margin:4px 0 8px}
.callout .k{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--acc2);margin-bottom:4px}
.callout p{margin:0;color:var(--text);font-size:17.5px}
.steps{margin:6px 0 16px;padding-left:0;list-style:none;counter-reset:s}
.steps li{counter-increment:s;position:relative;padding:10px 14px 10px 52px;margin-bottom:8px;background:var(--s2);border-radius:10px;color:var(--text2);font-size:16.5px}
.steps li::before{content:counter(s);position:absolute;left:14px;top:9px;width:26px;height:26px;border-radius:50%;background:var(--acc);color:#04201d;font-weight:800;font-size:14px;display:grid;place-items:center}
.faq details{border:1px solid var(--line);border-radius:10px;margin-bottom:8px;background:var(--s2)}
.faq summary{cursor:pointer;padding:12px 16px;font-weight:650;color:var(--text);font-size:16.5px}
.faq details p{padding:0 16px;margin:0 0 14px;font-size:16px}
.cta{display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:30px 0 8px;padding:18px 22px;border-radius:12px;border:1px solid var(--line2);background:linear-gradient(135deg,color-mix(in srgb,var(--acc) 16%,transparent),transparent)}
.cta p{margin:2px 0 0;font-size:15.5px}
.btn{display:inline-block;background:var(--acc);color:#04201d;font-weight:800;padding:10px 20px;border-radius:999px}.btn:hover{text-decoration:none;filter:brightness(1.08)}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.tags a{font-size:13.5px;color:var(--mut);border:1px solid var(--line);border-radius:99px;padding:2px 12px}
.related h2{font-size:18px;margin:26px 2px 12px}
.rel{display:flex;justify-content:space-between;gap:14px;align-items:center;background:var(--s1);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px;color:var(--text)}
.rel:hover{border-color:var(--line2);text-decoration:none}.rel span{color:var(--mut);font-size:13px;white-space:nowrap}
.plain h1{margin-top:0}
.foot{border-top:1px solid var(--line);color:var(--mut);font-size:13.5px;padding:22px 20px 34px;text-align:center}.foot p{max-width:680px;margin:10px auto 0}
.foot a{color:var(--mut)}
@media(max-width:1020px){.shell{grid-template-columns:minmax(0,1fr)}.left,.right{position:static}.left{display:flex;flex-wrap:wrap;gap:6px}.left .lbl{width:100%}.right{order:3}
 .topic{border:1px solid var(--line);border-radius:99px;padding:5px 12px}.topic.on{box-shadow:none;border-color:var(--acc)}}
@media(max-width:600px){.bar{padding:10px 14px;gap:10px}.brand span{display:none}.rss{display:none}.shell{padding:16px 14px 36px}.full{padding:20px 18px}.full h1{font-size:27px}.head h1{font-size:25px}.post{padding:16px}}

.toc{border:1px solid var(--line);border-radius:12px;background:var(--s2);padding:12px 18px;margin:14px 0 6px}
.toc .k{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--mut);margin-bottom:6px}
.toc ol{margin:0;padding-left:20px;color:var(--text2);font-size:15.5px}.toc li{margin:3px 0}
.full h2[id]{scroll-margin-top:84px}