:root{--ink:#0e1519;--muted:#5c6b71;--line:#e7ecee;--teal:#0fa3b1;--teal-deep:#0b7a85;--wash:#e6f5f6;--bg:#fff}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,Roboto,sans-serif;color:var(--ink);line-height:1.65;background:var(--bg)}
a{color:var(--teal-deep);text-decoration:none}a:hover{text-decoration:underline}
.site-hd{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 24px;border-bottom:1px solid var(--line);flex-wrap:wrap;max-width:1080px;margin:0 auto}
.brand{font-size:20px;font-weight:700;color:var(--ink)}.brand .mark{color:var(--teal)}
.site-hd nav{display:flex;gap:18px}.site-hd nav a{color:var(--muted);font-weight:500;font-size:15px}
main{max-width:760px;margin:0 auto;padding:32px 24px 56px}
.wide{max-width:1080px}
h1{font-size:32px;line-height:1.2;letter-spacing:-.02em;margin:.2em 0 .4em}
h2{font-size:22px;letter-spacing:-.01em;margin:1.6em 0 .5em}
.lede{font-size:19px;color:var(--muted)}
.hero{padding:24px 0 8px}
.pill{display:inline-block;background:var(--wash);color:var(--teal-deep);font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px;margin-bottom:14px}
.cta{display:inline-block;background:var(--teal);color:#fff;font-weight:600;padding:12px 22px;border-radius:12px;margin-top:8px}
.cta:hover{background:var(--teal-deep);text-decoration:none}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
.card{border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.card h3{margin:0 0 6px;font-size:17px}.card p{margin:0;color:var(--muted);font-size:14.5px}
.answer-list{list-style:none;padding:0;margin:22px 0;display:grid;gap:2px}
.answer-list a{display:block;padding:13px 14px;border-radius:10px;color:var(--ink);font-weight:500}
.answer-list a:hover{background:var(--wash);text-decoration:none}
.answer-list .t{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-top:2px;font-weight:600}
.meta{color:var(--muted);font-size:14px;margin:10px 0 24px}
.src{margin-top:28px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;font-size:14px;color:var(--muted)}
.disc{color:var(--muted);font-size:13px}
.detail p{margin:0 0 1em}
.crumb{font-size:13px;color:var(--muted);margin-bottom:8px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.tag{background:#f6f8f9;border:1px solid var(--line);border-radius:999px;padding:3px 11px;font-size:12.5px;color:var(--muted)}
.site-ft{border-top:1px solid var(--line);padding:28px 24px;max-width:1080px;margin:0 auto;color:var(--muted);font-size:13.5px}
.site-ft .disc{margin:8px 0}.site-ft .copy{color:#9aa6ab}
@media(max-width:560px){h1{font-size:26px}.grid{grid-template-columns:1fr}}
/* ===== Waykin application shell (shared sidebar + mobile drawer) ===== */
.wk-shell{display:flex;min-height:100vh;align-items:stretch}
.wk-main{flex:1;min-width:0}
.wk-skip{position:absolute;left:-9999px;top:0;background:var(--teal);color:#fff;font-weight:700;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.wk-skip:focus{left:0;text-decoration:none;outline:2px solid var(--teal-deep)}
.wk-nav{position:sticky;top:0;align-self:flex-start;height:100vh;width:236px;flex:none;display:flex;flex-direction:column;background:linear-gradient(rgba(8,34,60,.35),rgba(8,34,60,.35)),linear-gradient(180deg,#18AECB 0%,#1EA0D3 36%,#2494DA 68%,#2A86E2 100%);padding:14px 10px 12px;overflow-y:auto;overflow-x:hidden;transition:width .18s ease;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.35) transparent}
html.wk-c .wk-nav{width:66px}
.wk-nav a,.wk-nav button{display:flex;align-items:center;gap:11px;width:100%;padding:9px 11px;border-radius:10px;color:rgba(255,255,255,.92);font-size:14px;font-weight:600;border:none;background:none;cursor:pointer;font-family:inherit;text-align:left;white-space:nowrap;position:relative}
.wk-nav a:hover,.wk-nav button:hover{background:rgba(255,255,255,.14);color:#fff;text-decoration:none}
.wk-nav a:active,.wk-nav button:active{background:rgba(255,255,255,.20)}
.wk-nav a:focus-visible,.wk-nav button:focus-visible{outline:2px solid #fff;outline-offset:-2px}
.wk-nav a.on{background:rgba(255,255,255,.24);color:#fff;box-shadow:inset 3px 0 0 #fff}
.wk-nav .ni{flex:none}
.wk-nav .lb{overflow:hidden;text-overflow:ellipsis}
html.wk-c .wk-nav .lb{display:none}
html.wk-c .wk-nav a,html.wk-c .wk-nav button{justify-content:center;padding:11px 0}
html.wk-c .wk-nav [data-tip]:hover:after,html.wk-c .wk-nav [data-tip]:focus-visible:after{content:attr(data-tip);position:absolute;left:calc(100% + 8px);top:50%;transform:translateY(-50%);background:#12242A;color:#fff;font-size:12px;font-weight:600;padding:5px 10px;border-radius:7px;white-space:nowrap;z-index:120;pointer-events:none}
.sn-top{display:flex;flex-direction:column;gap:2px;margin-bottom:10px}
.sn-brand{font-size:16.5px;font-weight:800;color:#fff}
.sn-brand:hover{background:none !important}
.sn-new{border:1px solid rgba(255,255,255,.4);background:rgba(255,255,255,.10) !important;color:#fff}
.sn-new:hover{border-color:#fff;background:rgba(255,255,255,.18) !important}
.sn-sec{display:flex;flex-direction:column;gap:1px;padding:7px 0;border-top:1px solid rgba(255,255,255,.16)}
.sn-top + .sn-sec{border-top:none}
.sn-h{font-size:10.5px;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:rgba(255,255,255,.66);padding:4px 11px 3px}
html.wk-c .sn-h{display:none}
.sn-spacer{flex:1}
.sn-btm{border-top:1px solid rgba(255,255,255,.16)}
.sn-legal{font-size:11.5px;color:rgba(255,255,255,.66);padding:8px 11px 2px}
.sn-legal a{display:inline;width:auto;padding:0;color:rgba(255,255,255,.78);font-size:11.5px;font-weight:600}
.sn-legal a:hover{background:none;color:#fff;text-decoration:underline}
html.wk-c .sn-legal{display:none}
.sn-fold{margin-top:4px;color:rgba(255,255,255,.66) !important}
html.wk-c .sn-fold .ni{transform:rotate(180deg)}
.wk-mhd{display:none}
.wk-ovl{position:fixed;inset:0;background:rgba(14,21,25,.42);z-index:140;opacity:0;transition:opacity .2s ease}
.wk-ovl.in{opacity:1}
.wk-drawer{position:fixed;top:0;left:0;bottom:0;width:min(304px,86vw);background:linear-gradient(rgba(8,34,60,.35),rgba(8,34,60,.35)),linear-gradient(180deg,#18AECB 0%,#1EA0D3 36%,#2494DA 68%,#2A86E2 100%);z-index:150;display:flex;flex-direction:column;padding:16px 12px;overflow-y:auto;transform:translateX(-102%);transition:transform .22s ease;box-shadow:0 0 44px rgba(14,21,25,.35)}
.wk-drawer.in{transform:none}
.wk-drawer a,.wk-drawer button{display:flex;align-items:center;gap:12px;width:100%;min-height:46px;padding:11px 13px;border-radius:11px;color:rgba(255,255,255,.94);font-size:15.5px;font-weight:600;border:none;background:none;cursor:pointer;font-family:inherit;text-align:left}
.wk-drawer a:hover{background:rgba(255,255,255,.14);text-decoration:none}
.wk-drawer a:focus-visible,.wk-drawer button:focus-visible{outline:2px solid #fff;outline-offset:-2px}
.wk-drawer a.on{background:rgba(255,255,255,.24);color:#fff;box-shadow:inset 3px 0 0 #fff}
.wk-drawer .sn-h{font-size:11px;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:rgba(255,255,255,.66);padding:10px 13px 4px}
.wk-drawer .sn-sec{border-top:1px solid rgba(255,255,255,.16);padding:6px 0}
.wk-drawer .sn-top .sn-brand{font-size:18px;font-weight:800;color:#fff}
.wk-drawer .sn-fold{display:none}
.wk-close{position:absolute;top:10px;right:10px;width:42px;height:42px;justify-content:center;color:rgba(255,255,255,.85) !important}
body.wk-lock{overflow:hidden}
@media(max-width:899px){
  .wk-nav{display:none}
  .wk-mhd{display:flex;align-items:center;gap:10px;position:sticky;top:0;z-index:100;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);padding:10px 14px}
  .wk-shell{display:block}
  .wk-burger{width:42px;height:42px;display:flex;align-items:center;justify-content:center;border:none;background:none;border-radius:10px;color:var(--ink);cursor:pointer}
  .wk-burger:focus-visible{outline:2px solid var(--teal)}
  .wk-mbrand{display:flex;align-items:center;gap:8px;color:var(--ink);font-size:16.5px}
}
@media(prefers-reduced-motion:reduce){.wk-nav,.wk-drawer,.wk-ovl{transition:none}}