/* Layout: navy console header carrying the owl mark, collapsible index at left, one reference at a time on the right. Brand teal from the owl logo is the single accent; scans supply the imagery. */
:root{
  --bg:#f3f6f7; --surface:#ffffff; --sunk:#eaf0f2; --ink:#0f1b24; --muted:#566874; --line:#dbe3e7;
  --accent:#007590; --accent-2:#00a3b8; --accent-soft:#e0f0f3; --hl:#eef7f9;
  --ok:#1f7a4d; --ok-bg:#e1f3e9; --warn:#985c00; --warn-bg:#fcefd7; --crit:#b0281e; --crit-bg:#fbe4e1; --info:#245d8f; --info-bg:#e3eef8;
  --hdr:#0d1a23; --hdr-2:#132632; --hdr-ink:#f2f7f9; --hdr-muted:#93a9b5; --hdr-line:#22394a;
  --shadow:0 1px 2px rgba(15,27,36,.06),0 8px 24px rgba(15,27,36,.06);
  --f-display:"Rubik",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-body:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --nav-w:284px; --top-h:62px; --r:12px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0a1319; --surface:#101c24; --sunk:#0c171e; --ink:#e4edf1; --muted:#8fa3ae; --line:#1d2e39;
  --accent:#3cc6da; --accent-2:#7ddcea; --accent-soft:#0e2c35; --hl:#0f252d;
  --ok:#5fd193; --ok-bg:#0f2a1d; --warn:#f0ac45; --warn-bg:#2d2311; --crit:#f4776d; --crit-bg:#341714; --info:#86b9ea; --info-bg:#122335;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.25);
  color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0a1319; --surface:#101c24; --sunk:#0c171e; --ink:#e4edf1; --muted:#8fa3ae; --line:#1d2e39;
  --accent:#3cc6da; --accent-2:#7ddcea; --accent-soft:#0e2c35; --hl:#0f252d;
  --ok:#5fd193; --ok-bg:#0f2a1d; --warn:#f0ac45; --warn-bg:#2d2311; --crit:#f4776d; --crit-bg:#341714; --info:#86b9ea; --info-bg:#122335;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.25);
  color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{background:var(--bg);color:var(--ink)}
body{font-family:var(--f-body);font-size:15.5px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* top bar: always navy, the brand's ground */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;height:var(--top-h);display:flex;align-items:center;gap:16px;padding-inline:16px;background:var(--hdr);color:var(--hdr-ink);border-bottom:1px solid var(--hdr-line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--hdr-ink);flex:none}
.brand img{width:34px;height:34px;display:block}
.brand b{font-family:var(--f-display);font-weight:600;font-size:21px;letter-spacing:-.01em}
.brand small{font-size:12px;color:var(--hdr-muted);border-left:1px solid var(--hdr-line);padding-left:10px;margin-left:2px}
.search{position:relative;flex:1;max-width:580px;margin-inline:auto}
.search input{width:100%;height:40px;border:1px solid var(--hdr-line);background:var(--hdr-2);color:var(--hdr-ink);border-radius:999px;padding:0 48px 0 40px;font-size:14.5px}
.search input::placeholder{color:var(--hdr-muted)}
.search input:focus{outline:none;border-color:#3cc6da;box-shadow:0 0 0 3px rgba(60,198,218,.22)}
.search svg{position:absolute;left:14px;top:12px;width:16px;height:16px;stroke:var(--hdr-muted);fill:none;stroke-width:2}
.search kbd{position:absolute;right:12px;top:10px;font-family:var(--f-mono);font-size:11px;border:1px solid var(--hdr-line);border-radius:5px;padding:1px 7px;color:var(--hdr-muted)}
.results{position:absolute;left:0;right:0;top:48px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 48px rgba(0,0,0,.22);max-height:60vh;overflow:auto;padding:6px}
.results a{display:flex;justify-content:space-between;gap:12px;padding:9px 12px;border-radius:9px;text-decoration:none;color:var(--ink);font-weight:500}
.results a.on,.results a:hover{background:var(--accent-soft)}
.results a span{color:var(--muted);font-size:12.5px;white-space:nowrap;font-weight:400}
.results .none{padding:10px;color:var(--muted)}
.menu-btn{display:none;border:1px solid var(--hdr-line);background:var(--hdr-2);border-radius:10px;height:40px;width:42px;cursor:pointer}
.menu-btn svg{width:18px;height:18px;stroke:var(--hdr-ink);stroke-width:2;fill:none;margin:auto;display:block}

/* shell */
.shell{display:grid;grid-template-columns:var(--nav-w) minmax(0,1fr);min-height:calc(100vh - var(--top-h))}
.nav{position:sticky;top:calc(var(--top-h) + env(safe-area-inset-top,0px));align-self:start;height:calc(100vh - var(--top-h) - env(safe-area-inset-top,0px));overflow:auto;border-right:1px solid var(--line);padding-block:14px 40px;padding-inline:10px;background:var(--bg)}
.nav h4{font-family:var(--f-mono);font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:18px 10px 6px;display:flex;justify-content:space-between}
.nav h4:first-child{margin-top:4px}
.nav a{display:block;padding:5px 10px;border-radius:5px;text-decoration:none;color:var(--ink);font-size:14.5px;line-height:1.35}
.nav a:hover{background:var(--sunk)}
.nav a.cur{background:var(--accent-soft);color:var(--ink);box-shadow:inset 2px 0 0 var(--accent)}
.nav a.home{font-weight:600}
.navtools{display:flex;gap:6px;margin:6px 10px 10px}
.navtools button{flex:1;border:1px solid var(--line);background:transparent;border-radius:5px;padding:3px 6px;font-size:12px;color:var(--muted);cursor:pointer}
.navtools button:hover{color:var(--ink);border-color:var(--accent)}
.grp{border-top:1px solid var(--line)}
.grp summary{list-style:none;display:flex;align-items:center;gap:8px;padding:9px 10px;cursor:pointer;border-radius:5px;font-family:var(--f-display);font-weight:600;font-size:16px;letter-spacing:.01em;user-select:none}
.grp summary::-webkit-details-marker{display:none}
.grp summary:hover{background:var(--sunk)}
.grp summary span:first-child{flex:1}
.grp summary .cnt{font-family:var(--f-mono);font-size:11px;font-weight:400;color:var(--muted)}
.grp summary svg{width:14px;height:14px;fill:none;stroke:var(--muted);stroke-width:2;transition:transform .15s ease;flex:none}
.grp[open] summary svg{transform:rotate(90deg)}
.grp .items{padding:0 0 8px 8px;margin-left:10px;border-left:1px solid var(--line)}
main{min-width:0;padding-block:28px 64px;padding-inline:clamp(16px,4vw,48px)}
.wrap{max-width:900px;margin-inline:auto}

/* home */
.hero{padding-block:8px 24px;border-bottom:1px solid var(--line);margin-bottom:28px}
.hero h1{font-family:var(--f-display);font-weight:700;font-size:clamp(30px,4.4vw,44px);line-height:1.05;margin:0 0 10px;text-wrap:balance;letter-spacing:-.005em}
.hero p{margin:0;color:var(--muted);max-width:62ch}
.hero .stats{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:16px;font-family:var(--f-mono);font-size:12.5px;color:var(--muted)}
.hero .stats b{color:var(--ink);font-weight:600}
.strip{margin-bottom:28px}
.strip h2,.sec h2{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600;margin:0 0 10px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips a{text-decoration:none;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:14px}
.chips a:hover{border-color:var(--accent)}
.secs{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.sec{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px 16px 10px}
.sec h2{display:flex;justify-content:space-between;color:var(--accent)}
.sec ul{list-style:none;margin:0;padding:0}
.sec li a{display:flex;justify-content:space-between;align-items:baseline;gap:10px;padding:6px 0;border-top:1px solid var(--line);text-decoration:none;color:var(--ink);font-size:15px}
.sec li:first-child a{border-top:0}
.sec li a:hover{color:var(--accent)}
.sec li a small{font-family:var(--f-mono);font-size:11px;color:var(--muted);white-space:nowrap}

/* entry */
.crumb{font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--accent)}
.ehead{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:12px 20px;margin-bottom:6px}
.ehead h1{font-family:var(--f-display);font-weight:700;font-size:clamp(28px,4vw,38px);line-height:1.08;margin:0;text-wrap:balance;min-width:0}
.acts{display:flex;gap:8px;flex:none}
.btn{border:1px solid var(--line);background:var(--surface);border-radius:6px;padding:6px 12px;font-size:14px;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.btn:hover{border-color:var(--accent)}
.btn[aria-pressed="true"]{background:var(--accent-soft);border-color:var(--accent)}
.meta{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 18px}
.tag{font-family:var(--f-mono);font-size:11.5px;padding:2px 8px;border-radius:4px;background:var(--sunk);color:var(--muted);border:1px solid var(--line)}
.tag.v{color:var(--accent);border-color:var(--accent);background:transparent}
.lede{font-size:17px;max-width:68ch;margin:0 0 22px}
.entry h3{font-family:var(--f-display);font-weight:600;font-size:21px;margin:30px 0 10px;letter-spacing:.005em}
.entry p,.entry li{max-width:72ch}
.entry ul.pearls{padding-left:20px;margin:8px 0}
.entry ul.pearls li{margin:4px 0}
.tw{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);margin:10px 0}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{text-align:left;vertical-align:top;padding:9px 12px;border-bottom:1px solid var(--line)}
th{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600;background:var(--sunk);white-space:nowrap}
tr:last-child td{border-bottom:0}
td.k{font-family:var(--f-mono);font-weight:600;white-space:nowrap;color:var(--accent)}
td.n{font-variant-numeric:tabular-nums;white-space:nowrap}
.b{display:inline-block;font-family:var(--f-mono);font-size:12px;font-weight:600;padding:1px 7px;border-radius:4px;white-space:nowrap}
.b.ok{color:var(--ok);background:var(--ok-bg)} .b.warn{color:var(--warn);background:var(--warn-bg)} .b.crit{color:var(--crit);background:var(--crit-bg)} .b.info{color:var(--info);background:var(--info-bg)}
.note{border-left:3px solid var(--accent);background:var(--hl);padding:10px 14px;border-radius:0 6px 6px 0;margin:14px 0;max-width:72ch}
.mono{font-family:var(--f-mono);font-size:.92em}

/* calculators */
.calc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin:14px 0;display:grid;gap:14px}
.calc .row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
.calc label{display:grid;gap:4px;font-size:13.5px;color:var(--muted);min-width:0}
.calc input[type=number],.calc select{height:36px;border:1px solid var(--line);border-radius:6px;background:var(--sunk);padding:0 10px;font-size:15px;color:var(--ink);width:100%;min-width:0}
.calc .checks{display:flex;flex-wrap:wrap;gap:8px 16px}
.calc .checks label{display:flex;align-items:center;gap:7px;color:var(--ink);font-size:14.5px;cursor:pointer}
.calc input[type=checkbox]{width:17px;height:17px;accent-color:var(--accent)}
.out{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px;border-top:1px dashed var(--line);padding-top:12px}
.out .big{font-family:var(--f-display);font-weight:700;font-size:32px;line-height:1;font-variant-numeric:tabular-nums}
.out .lbl{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.out .msg{flex-basis:100%;font-size:15px}
.calc-h{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-weight:600}

/* decision trees */
.tree{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin:12px 0;display:grid;gap:14px}
.trail{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.trail button{width:100%;text-align:left;display:grid;gap:1px;border:1px solid var(--line);background:var(--sunk);border-radius:6px;padding:7px 12px;cursor:pointer}
.trail button:hover{border-color:var(--accent)}
.trail button span{font-size:12.5px;color:var(--muted)}
.trail button b{font-weight:600;font-size:14.5px}
.ask .qq{font-family:var(--f-display);font-weight:600;font-size:19px;line-height:1.25;margin-bottom:10px;text-wrap:balance}
.opts{display:grid;gap:8px}
.opts button{text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:6px;padding:11px 14px;font-size:15px;cursor:pointer;line-height:1.35;position:relative;padding-right:34px}
.opts button::after{content:"›";position:absolute;right:14px;top:50%;transform:translateY(-52%);color:var(--muted);font-size:20px}
.opts button:hover{border-color:var(--accent);background:var(--accent-soft)}
.res{border-radius:6px;padding:12px 16px;border:1px solid var(--line);border-left-width:5px}
.res p{margin:4px 0 0;font-size:17px;font-weight:600;max-width:64ch}
.res .lbl{font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.res.ok{background:var(--ok-bg);border-left-color:var(--ok)} .res.ok .lbl{color:var(--ok)}
.res.warn{background:var(--warn-bg);border-left-color:var(--warn)} .res.warn .lbl{color:var(--warn)}
.res.crit{background:var(--crit-bg);border-left-color:var(--crit)} .res.crit .lbl{color:var(--crit)}
.tacts{display:flex;flex-wrap:wrap;gap:8px}
.tacts button{border:1px solid var(--line);background:transparent;border-radius:5px;padding:4px 10px;font-size:13px;color:var(--muted);cursor:pointer}
.tacts button:hover{color:var(--ink);border-color:var(--accent)}
.outline{border-top:1px dashed var(--line);padding-top:12px;font-size:14.5px;overflow-x:auto}
.outline ul{list-style:none;margin:4px 0 0;padding-left:16px;border-left:1px solid var(--line)}
.outline li{margin:6px 0;position:relative}
.outline li::before{content:"";position:absolute;left:-16px;top:.75em;width:10px;border-top:1px solid var(--line)}
.ol-a{display:inline-block;font-weight:600;color:var(--accent)}
.ol-q{color:var(--muted);font-style:italic;margin-top:2px}
.ol-q.root{font-style:normal;font-weight:600;color:var(--ink)}
.ol-r{display:inline-block;margin-top:3px;padding:2px 8px;border-radius:4px;font-weight:600}
.ol-r.ok{background:var(--ok-bg);color:var(--ok)} .ol-r.warn{background:var(--warn-bg);color:var(--warn)} .ol-r.crit{background:var(--crit-bg);color:var(--crit)}
.legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:12.5px;color:var(--muted)}

/* flowchart figures */
.figs{margin:14px 0}
.figs summary{cursor:pointer;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:4px 0}
.figrow{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px;margin-top:8px}
.figrow:has(> .fig:only-child){grid-template-columns:minmax(0,820px)}
.fig img{max-height:440px;object-fit:contain}
.figrow.stack{grid-template-columns:minmax(0,1fr)}
.figrow.stack .fig img{max-height:none}
.fig{margin:0;min-width:0}
.fig button{display:block;width:100%;padding:8px;background:#fff;border:1px solid var(--line);border-radius:var(--r);cursor:zoom-in}
.fig button:hover{border-color:var(--accent)}
.fig img{display:block;width:100%;height:auto}
.fig figcaption{font-size:13px;color:var(--muted);margin-top:6px}

/* cases */
.nav .items a .ncount{float:right;font-family:var(--f-mono);font-size:11px;color:var(--muted)}
.empty{color:var(--muted);background:var(--surface);border:1px dashed var(--line);border-radius:var(--r);padding:20px;max-width:none}
.subh{font-family:var(--f-display);font-weight:600;font-size:21px;margin:30px 0 10px}
.csecs{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px}
.csec{display:grid;gap:2px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);text-decoration:none;color:var(--ink)}
.csec:hover{border-color:var(--accent)}
.csec b{font-family:var(--f-display);font-weight:600;font-size:17px}
.csec span{font-family:var(--f-mono);font-size:11.5px;color:var(--muted)}
.cgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.ccard{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);overflow:hidden;text-decoration:none;color:var(--ink);min-width:0}
.ccard:hover{border-color:var(--accent)}
.cthumb{aspect-ratio:4/3;background:#0b0d0f;display:grid;place-items:center;max-width:100%}
.cthumb img{width:100%;height:100%;object-fit:cover}
.cthumb span{color:#8a96a3;font-size:13px}
.cbody{padding:10px 12px;display:grid;gap:6px}
.cbody b{font-weight:600;line-height:1.3}
.cmeta{display:flex;flex-wrap:wrap;gap:4px}
.btn.pri{background:var(--accent);border-color:var(--accent);color:var(--bg);font-weight:600;text-decoration:none}
.btn.pri:hover{filter:brightness(1.08)}
a.btn{text-decoration:none;color:var(--ink)}
a.btn.pri{color:var(--bg)}
.btn.danger{border-color:var(--crit);color:var(--crit)}
.btn:disabled{opacity:.5;cursor:default}
.confirm{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;padding:10px 14px;border:1px solid var(--crit);background:var(--crit-bg);border-radius:var(--r);margin:10px 0}
.st{font-size:14px;color:var(--muted)}
.gal{background:#0b0d0f;border-radius:var(--r);padding:10px;margin:14px 0;display:grid;gap:8px}
.gal button{border:0;padding:0;background:none;cursor:zoom-in;display:block}
.gmain img{display:block;margin:0 auto;max-height:70vh;width:auto;max-width:100%;border-radius:4px}
.gcap{color:#b9c3cc;font-size:14px;margin:0;text-align:center}
.gthumbs{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px}
.gthumbs button{flex:none;width:96px;height:72px;border:1px solid #2a323a;border-radius:4px;overflow:hidden}
.gthumbs img{width:100%;height:100%;object-fit:cover}
.gthumbs button:hover{border-color:var(--accent)}
.reveal{margin:24px 0 8px;width:100%;padding:12px 16px;border:1px dashed var(--accent);background:var(--accent-soft);color:var(--ink);border-radius:var(--r);font-size:15.5px;font-weight:600;cursor:pointer}
.dx{border-left:5px solid var(--accent);background:var(--hl);padding:10px 16px;border-radius:0 6px 6px 0;margin:12px 0}
.dx p{margin:2px 0 0;font-size:19px;font-weight:600;font-family:var(--f-display)}
.dx .lbl,.lb .lbn{font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.crefs{padding-left:20px;font-size:14.5px;display:grid;gap:4px}
.crefs a{word-break:break-all}

/* case editor */
.cform form{display:grid;gap:16px}
.frow{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.fl{display:grid;gap:4px;min-width:0}
.fl>span{font-weight:600;font-size:14.5px}
.fl small{color:var(--muted);font-size:13px}
.fl input[type=text],.fl select,.fl textarea{width:100%;border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:8px 10px;font-size:15px;line-height:1.45;min-width:0}
.fl select{height:38px}
.fl textarea{resize:vertical}
.fl input:focus,.fl select:focus,.fl textarea:focus{outline:none;border-color:var(--accent)}
.drop{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:16px;border:1px dashed var(--line);border-radius:var(--r);background:var(--sunk);color:var(--muted);font-size:14px}
.drop.over{border-color:var(--accent);background:var(--accent-soft)}
.drop input{position:absolute;width:1px;height:1px;opacity:0}
.drop:focus-within label{outline:2px solid var(--accent);outline-offset:2px}
.edimgs{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;margin-top:8px}
.edimg{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);padding:8px;display:grid;gap:6px;min-width:0}
.edimg img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#0b0d0f;border-radius:4px}
.edimg input{width:100%;border:1px solid var(--line);border-radius:5px;background:var(--sunk);padding:5px 8px;font-size:13.5px;min-width:0}
.edbtns{display:flex;gap:6px}
.edbtns .btn{padding:3px 9px;font-size:13px}
.edbtns .btn:last-child{margin-left:auto}
.edimg.busy{display:grid;place-items:center;min-height:120px;color:var(--muted);font-size:14px}
.chk{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;max-width:72ch}
.chk input{width:17px;height:17px;margin-top:3px;accent-color:var(--accent);flex:none}
.fbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-top:6px;border-top:1px solid var(--line)}

/* lightbox: always dark, the way images are read */
.lb{position:fixed;inset:0;z-index:60;background:rgba(6,8,10,.94);display:grid;grid-template-columns:56px minmax(0,1fr) 56px;align-items:center;padding:calc(env(safe-area-inset-top,0px) + 48px) 8px calc(env(safe-area-inset-bottom,0px) + 16px)}
.lb figure{margin:0;display:grid;gap:10px;justify-items:center;min-width:0;max-height:100%}
.lb img{max-width:100%;max-height:calc(100vh - 140px);object-fit:contain;border-radius:4px}
.lb.paper img{background:#fff;padding:10px}
.lb figcaption{color:#d6dde3;font-size:14.5px;text-align:center;display:grid;gap:2px}
.lb button{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#eef2f5;border-radius:6px;cursor:pointer}
.lbx{position:absolute;top:calc(env(safe-area-inset-top,0px) + 10px);right:12px;width:38px;height:38px;font-size:16px}
.lbnav{grid-row:1;width:44px;height:64px;font-size:28px;justify-self:center}
.lbnav.prev{grid-column:1}.lbnav.next{grid-column:3}
.lb figure{grid-column:2;grid-row:1}
@media (max-width:600px){.lb{grid-template-columns:36px minmax(0,1fr) 36px}.lbnav{width:32px}}


/* anatomy viewer */
.anat-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.anat-cards .cover{height:150px}
.anat-sub{display:block;padding:10px 14px 12px;font-size:13.5px;color:var(--muted)}
.anat .ebanner{margin-bottom:14px}
.anat-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:12px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:var(--surface)}
.seg button{border:0;background:transparent;padding:6px 12px;font-size:13px;font-weight:600;cursor:pointer;color:var(--muted)}
.seg button+button{border-left:1px solid var(--line)}
.seg button[aria-pressed="true"]{background:var(--accent);color:var(--bg)}
#an-quiz[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--bg)}
.an-search{position:relative;margin-left:auto;min-width:200px;flex:1 1 200px;max-width:320px}
.an-search input{width:100%;height:34px;border:1px solid var(--line);border-radius:999px;background:var(--surface);padding:0 14px;font-size:14px}
.an-search input:focus{outline:none;border-color:var(--accent)}
.an-res{position:absolute;z-index:20;left:0;right:0;top:40px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:4px}
.an-res button{display:flex;gap:8px;align-items:center;width:100%;text-align:left;border:0;background:none;padding:7px 10px;border-radius:8px;font-size:14px;cursor:pointer}
.an-res button:hover{background:var(--accent-soft)}
.an-res i,.an-cats i,.an-gh i{width:9px;height:9px;border-radius:50%;flex:none;display:inline-block}
.anat-grid{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:16px;align-items:start}
.an-stage{position:relative;background:#000;border-radius:16px;overflow:hidden;touch-action:none;cursor:crosshair;min-height:300px;box-shadow:var(--shadow)}
.an-stage:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.an-stage canvas{display:block}
.an-hud{position:absolute;left:12px;top:10px;right:12px;display:flex;justify-content:space-between;font-family:var(--f-mono);font-size:12px;color:#cfe3ea;pointer-events:none;text-shadow:0 1px 2px #000}
.an-tip{position:absolute;pointer-events:none;background:rgba(6,12,16,.9);color:#fff;border:1px solid rgba(60,198,218,.6);border-radius:8px;padding:4px 9px;font-size:13px;font-weight:600;white-space:nowrap}
.an-load{position:absolute;inset:0;display:grid;place-content:center;gap:10px;justify-items:center;color:#cfe3ea;font-size:14px}
.an-prog{width:200px;height:6px;border-radius:3px;background:#1d2e39;overflow:hidden}
.an-prog i{display:block;height:100%;width:0;background:#3cc6da;transition:width .2s}
.an-quiz{position:absolute;left:12px;right:12px;bottom:12px;background:rgba(8,16,21,.92);border:1px solid rgba(60,198,218,.4);border-radius:14px;padding:12px 14px;color:#eaf3f6;backdrop-filter:blur(4px)}
.an-qh{display:flex;justify-content:space-between;gap:10px;align-items:baseline;font-size:15px}
.an-score{font-family:var(--f-mono);font-size:12.5px;color:#7ddcea}
.an-opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:8px;margin-top:10px}
.an-opts button{border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#eaf3f6;border-radius:10px;padding:8px 10px;font-size:13.5px;font-weight:600;cursor:pointer;text-align:left}
.an-opts button:hover:not(:disabled){border-color:#3cc6da}
.an-opts button.ok{background:rgba(95,209,147,.25);border-color:#5fd193}
.an-opts button.bad{background:rgba(244,119,109,.22);border-color:#f4776d}
.an-qf{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:10px;font-size:14px}
.an-qf .ok{color:#5fd193;font-weight:700}.an-qf .bad{color:#f4a39c;font-weight:600}
.an-qhint{margin:6px 0 0;font-size:13px;color:#9fb6c0}
.an-side{display:grid;gap:12px;min-width:0}
.an-scoutwrap{background:#000;border-radius:14px;overflow:hidden;position:relative}
.an-scoutwrap canvas{display:block;width:100%;cursor:ns-resize;touch-action:none}
.an-scap{position:absolute;left:8px;bottom:6px;font-size:10.5px;color:#9fb6c0;font-family:var(--f-mono);pointer-events:none}
#an-range{width:100%;accent-color:var(--accent)}
.an-cats{display:flex;flex-wrap:wrap;gap:6px}
.an-cats button{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:3px 10px;font-size:12px;font-weight:600;cursor:pointer;color:var(--muted)}
.an-cats button[aria-pressed="true"]{color:var(--ink);border-color:var(--accent);background:var(--accent-soft)}
.an-cats button[aria-pressed="false"] i{opacity:.35}
.an-listh{display:flex;justify-content:space-between;font-size:11.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.an-list{max-height:52vh;overflow:auto;display:grid;gap:10px;padding-right:4px}
.an-gh{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:700;color:var(--muted);margin-bottom:3px}
.an-grp button{display:block;width:100%;text-align:left;border:0;background:none;padding:4px 8px 4px 16px;border-radius:7px;font-size:13.5px;cursor:pointer;color:var(--ink)}
.an-grp button:hover{background:var(--sunk)}
.an-grp button.on{background:var(--accent-soft);color:var(--accent);font-weight:700}
.an-empty{color:var(--muted);font-size:13px;margin:4px 0}
.an-shell{display:flex;flex-direction:column}
.an-max svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;vertical-align:-2px;margin-right:6px}
.an-ori b{position:absolute;font:700 12px var(--f-mono);color:rgba(207,227,234,.7);pointer-events:none;text-shadow:0 1px 2px #000}
.an-ori .l{left:10px;top:50%;transform:translateY(-50%)}.an-ori .r{right:10px;top:50%;transform:translateY(-50%)}
.an-ori .t{top:30px;left:50%;transform:translateX(-50%)}.an-ori .b{bottom:8px;left:50%;transform:translateX(-50%)}
.anat.max .an-shell{position:fixed;inset:0;z-index:400;background:#071016;padding:12px 16px 14px;overflow:hidden}
.anat.max .anat-bar .seg button,.anat.max .anat-bar .btn{background:#0f1d26;color:#cfe3ea;border-color:#22394a}
.anat.max .anat-bar [aria-pressed="true"]{background:var(--accent);color:#fff}
.anat.max .an-search input{background:#0f1d26;color:#e8f1f4;border-color:#22394a}
.anat.max .anat-grid{flex:1;min-height:0;grid-template-columns:minmax(0,1fr) 300px;align-items:stretch}
.anat.max .an-stage{border-radius:12px;box-shadow:none}
.anat.max .an-side{overflow:auto;min-height:0;align-content:start;color:#cfe3ea;padding-right:2px}
.anat.max .an-list{max-height:none}
.anat.max .an-grp button{color:#d7e6ec}.anat.max .an-grp button:hover{background:#13232e}
.anat.max .an-cats button{background:#0f1d26;border-color:#22394a;color:#9fb6c0}.anat.max .an-cats button[aria-pressed="true"]{color:#e8f1f4;border-color:var(--accent);background:#0d2b33}
body.an-maxed{overflow:hidden}
@media (max-width:900px){.anat.max .anat-grid{grid-template-columns:1fr}.anat.max .an-side{display:none}}

@media (max-width:900px){.anat-grid{grid-template-columns:1fr}.an-scoutwrap{display:none}.an-list{max-height:none}}

/* aspects grid */
.asp{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}
.asp fieldset{border:1px solid var(--line);border-radius:6px;padding:10px 12px;margin:0;display:grid;gap:6px}
.asp legend{font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:0 4px}

/* teeth */
.teeth{display:grid;grid-template-columns:repeat(16,minmax(34px,1fr));gap:3px;min-width:600px}
.teeth div{border:1px solid var(--line);border-radius:4px;text-align:center;padding:4px 2px;font-variant-numeric:tabular-nums;background:var(--surface)}
.teeth div b{display:block;font-family:var(--f-mono);font-size:13px}
.teeth div i{display:block;font-style:normal;font-size:11px;color:var(--muted);font-family:var(--f-mono)}
.teeth .mid{border-left:2px solid var(--accent)}
.teethlbl{display:flex;justify-content:space-between;font-family:var(--f-mono);font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;min-width:600px;margin:6px 0 3px}

/* sources */
.src{margin-top:36px;border-top:1px solid var(--line);padding-top:16px}
.src h3{margin-top:0}
.src ol{padding-left:20px;margin:0;display:grid;gap:8px}
.src li{font-size:14.5px;max-width:80ch}
.src li .lk{display:inline-flex;gap:10px;margin-left:6px;font-family:var(--f-mono);font-size:12px}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:28px;flex-wrap:wrap}
.pager a{flex:1 1 220px;border:1px solid var(--line);border-radius:var(--r);padding:10px 14px;text-decoration:none;color:var(--ink);background:var(--surface);min-width:0}
.pager a:hover{border-color:var(--accent)}
.pager a small{display:block;font-family:var(--f-mono);font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.pager a.nx{text-align:right}
.foot{margin-top:48px;font-size:13px;color:var(--muted);max-width:72ch}

@media (max-width:860px){
  .menu-btn{display:block}
  .brand small{display:none}
  .shell{grid-template-columns:minmax(0,1fr)}
  .nav{position:fixed;top:calc(var(--top-h) + env(safe-area-inset-top,0px));left:0;bottom:0;width:min(86vw,320px);height:auto;z-index:25;transform:translateX(-102%);transition:transform .2s ease;background:var(--bg);box-shadow:0 0 0 100vmax transparent}
  body.navopen .nav{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.35)}
  .search kbd{display:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* ===== modern layer ===== */
.nav{background:var(--surface);border-right:1px solid var(--line);padding-inline:12px}
.nav a{border-radius:8px;padding:6px 10px;font-size:14px;font-weight:500}
.nav a.home{font-family:var(--f-display);font-weight:600;font-size:15px;margin-bottom:2px}
.nav a.cur{background:var(--accent-soft);color:var(--accent);box-shadow:none;font-weight:600}
.grp{border-top:0;margin-top:2px}
.grp summary{font-family:var(--f-display);font-weight:600;font-size:15px;border-radius:9px;padding:9px 10px}
.grp[open]>summary{color:var(--accent)}
.grp .items{border-left:2px solid var(--line);margin-left:16px;padding-left:6px}
.navtools button{border-radius:999px}
.cases-grp{border-top:1px solid var(--line);margin-top:10px;padding-top:6px}
.calc-grp{border-bottom:1px solid var(--line);margin-bottom:8px;padding-bottom:6px}
.navh{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:6px 10px 2px}
.soon-t{font-size:13px;color:var(--muted)}
.cases-link span:first-child{font-weight:700;font-size:15px}
.cases-link{display:flex!important;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:10px;padding:12px 10px 8px;font-weight:700;color:var(--ink);text-decoration:none}
.cases-link:hover,.cases-link.cur{color:var(--accent)}
.tool-link{display:flex!important;justify-content:space-between;align-items:center;padding:10px 10px 12px;border-bottom:1px solid var(--line);margin-bottom:8px;font-weight:700;font-size:15px;color:var(--ink);text-decoration:none}
.tool-link:hover,.tool-link.cur{color:var(--accent)}.tool-link .soon{margin-left:auto;font-size:10.5px;font-weight:700;letter-spacing:.04em;color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:1px 8px}
.ddx-warn{border-left:4px solid #e0a12b;background:var(--surface);border-radius:10px;padding:12px 16px;font-size:14px;color:var(--ink);margin:6px 0 18px}
.ddx-form{display:grid;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px}
.ddx-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.ddx-form .fl{display:grid;gap:5px;font-size:13px;font-weight:600;color:var(--muted)}.ddx-form .fl small{font-weight:400}
.ddx-form input,.ddx-form select,.ddx-form textarea{font:inherit;font-size:15px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:9px 11px;width:100%;box-sizing:border-box}
.ddx-form textarea{resize:vertical;line-height:1.45}
.ddx-form input:focus,.ddx-form select:focus,.ddx-form textarea:focus{outline:none;border-color:var(--accent)}
.ddx-drop{border:1.5px dashed var(--line);border-radius:12px;padding:16px;text-align:center;cursor:pointer;display:grid;gap:4px;color:var(--muted);font-size:13px}
.ddx-drop b{color:var(--ink);font-size:14px}.ddx-drop.on,.ddx-drop:hover{border-color:var(--accent);background:var(--accent-soft)}
.ddx-thumbs{display:flex;gap:10px;flex-wrap:wrap}.ddx-thumbs:empty{display:none}
.ddx-thumbs figure{position:relative;margin:0}.ddx-thumbs img{height:96px;border-radius:8px;display:block;background:#000}
.ddx-thumbs button{position:absolute;top:4px;right:4px;width:24px;height:24px;border-radius:50%;border:0;background:rgba(0,0,0,.7);color:#fff;cursor:pointer}
.ddx-ok{display:flex;gap:8px;align-items:flex-start;font-size:13.5px}.ddx-ok input{width:auto;margin-top:2px}
.ddx-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.ddx-status{font-size:14px;color:var(--muted)}
.ddx-res{margin-top:22px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:6px 20px 16px}
.ddx-list{padding-left:20px;display:grid;gap:12px}.ddx-list li p{margin:4px 0;font-size:14.5px}
.ddx-h{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.ddx-k{display:inline-block;min-width:62px;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.ddx-ex{margin:6px 0 4px;display:grid;gap:6px}
.ddx-rp{justify-self:start;font-size:12.5px;font-weight:600;color:var(--accent);text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:3px 10px;background:var(--bg)}
.ddx-rp:hover{border-color:var(--accent)}
.ddx-imgs{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.ddx-imgs a{display:block;width:96px;height:96px;border-radius:10px;overflow:hidden;background:#000;border:1px solid var(--line)}
.ddx-imgs img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .2s}.ddx-imgs a:hover img{transform:scale(1.05)}
.ddx-imgs small{flex-basis:100%;font-size:11.5px;color:var(--muted)}
.ddx-sk{width:96px;height:96px;border-radius:10px;background:linear-gradient(90deg,var(--line),var(--surface),var(--line));background-size:200% 100%;animation:ddxsk 1.2s linear infinite}
@keyframes ddxsk{to{background-position:-200% 0}}
.ddx-lb{position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,.82);display:grid;place-items:center;padding:24px}
.ddx-lb figure{position:relative;margin:0;max-width:min(920px,100%);max-height:100%;display:grid;gap:10px;background:#111;border-radius:14px;padding:14px;color:#e8e8e8}
.ddx-lb img{max-width:100%;max-height:70vh;object-fit:contain;justify-self:center}
.ddx-lb figcaption{font-size:13.5px;line-height:1.45;max-height:20vh;overflow:auto}.ddx-lb figcaption span{display:block;margin-top:6px;color:#aaa;font-size:12px}.ddx-lb a{color:#7fd3ff}
.ddx-lb button{position:absolute;top:6px;right:8px;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}
.nav a.tool-link{font-weight:800;font-size:15.5px}
.home-ddx{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px 22px 16px;margin:0 0 22px}
.home-ddx-h{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}
.home-ddx h2{margin:0;font-family:var(--f-display);font-size:24px;display:flex;align-items:center;gap:10px}
.home-ddx h2 .soon{font-size:11px;font-weight:700;letter-spacing:.04em;color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:1px 8px}
.home-ddx-h a{font-size:14px;color:var(--accent);text-decoration:none;font-weight:600}
.home-ddx>p{margin:6px 0 12px;color:var(--muted)}
.home-ddx .ddx-warn{font-size:13px;padding:8px 12px;margin-bottom:12px}
.home-ddx .ddx-comp{position:static;box-shadow:none}.home-ddx .ddx-comp.chat{position:sticky;box-shadow:0 10px 30px rgba(0,0,0,.08)}
.home .hero2{margin-bottom:22px}
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:28px}@media (max-width:760px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:520px){.tiles{grid-template-columns:1fr;gap:10px}.tile .cover{height:72px}}
.tile{display:block;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);text-decoration:none;transition:transform .15s,box-shadow .15s}
.tile:hover{transform:translateY(-2px)}.tile .cover{height:92px}
.seclist{list-style:none;padding:0;margin:0 0 24px;display:grid;gap:8px}
.seclist a{display:flex;justify-content:space-between;gap:12px;align-items:baseline;padding:12px 16px;background:var(--surface);border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink)}
.seclist a:hover{border-color:var(--accent)}.seclist small{color:var(--muted);font-size:12.5px;text-align:right}
.ddx-thread{display:grid;gap:14px;margin:4px 0 14px}.ddx-thread:empty{display:none}
.ddx-comp{position:sticky;bottom:12px;z-index:5;display:grid;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:12px 14px;box-shadow:0 10px 30px rgba(0,0,0,.08)}
.ddx-comp.on{border-color:var(--accent);background:var(--accent-soft)}
.ddx-comp textarea{font:inherit;font-size:15.5px;line-height:1.5;color:var(--ink);background:transparent;border:0;resize:vertical;outline:none;width:100%;box-sizing:border-box;padding:4px 2px}
.ddx-bar{display:flex;align-items:center;gap:10px}.ddx-bar .ddx-status{flex:1}
.ddx-ib{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--bg);cursor:pointer;display:grid;place-items:center;color:var(--muted)}
.ddx-ib:hover{color:var(--accent);border-color:var(--accent)}.ddx-ib svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ddx-foot{display:flex;align-items:center;gap:12px;margin-top:6px}.ddx-copy{border:0;background:none;color:var(--accent);font-weight:600;cursor:pointer;font-size:13px}
.ddx-ans{margin-top:24px;display:grid;gap:14px}
.ddx-q{justify-self:end;max-width:80%;background:var(--accent-soft);border-radius:18px 18px 4px 18px;padding:12px 16px;font-size:15px;white-space:pre-wrap}
.ddx-qimgs{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}.ddx-qimgs img{height:56px;border-radius:6px}
.ddx-a{display:grid;grid-template-columns:34px minmax(0,1fr);gap:12px;align-items:start}
.ddx-spark{width:30px;height:30px;border-radius:50%;background:conic-gradient(from 210deg,#00a3b8,#4f8cff,#b98cff,#00a3b8);box-shadow:0 0 0 3px var(--surface)}
.ddx-body{font-size:16px;line-height:1.65;color:var(--ink)}
.ddx-body h3{font-size:17px;margin:18px 0 6px}.ddx-body h3:first-child{margin-top:2px}
.ddx-body p{margin:6px 0}.ddx-body ol,.ddx-body ul{margin:6px 0 8px;padding-left:22px}.ddx-body li{margin:5px 0}
.ddx-body li::marker{color:var(--accent);font-weight:700}.ddx-body em{color:var(--muted)}
.ddx-body code{font-family:var(--f-mono);font-size:.9em;background:var(--sunk);padding:1px 5px;border-radius:5px}
.ddx-caret{display:inline-block;width:8px;height:1.05em;background:var(--accent);vertical-align:-2px;margin-left:2px;animation:ddxb 1s steps(2) infinite}
@keyframes ddxb{50%{opacity:0}}
.ddx-think{color:var(--muted);display:flex;gap:5px;align-items:center}.ddx-think span{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:ddxp 1.2s infinite ease-in-out}
.ddx-think span:nth-child(2){animation-delay:.15s}.ddx-think span:nth-child(3){animation-delay:.3s;margin-right:6px}
@keyframes ddxp{0%,80%,100%{opacity:.25;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}
.ddx-tools{display:flex;gap:8px;margin-top:6px}.ddx-err{color:#c0392b}
.ddx-model{font-size:12.5px;color:var(--muted)}
@media (max-width:700px){.ddx-row{grid-template-columns:repeat(2,minmax(0,1fr))}}
.soonbox{border:1px dashed var(--line);border-radius:16px;padding:36px 24px;text-align:center;color:var(--muted);margin-top:8px}.soonbox h2{margin:0 0 6px;color:var(--ink)}
.cases-link .soon{margin-left:auto;font-size:10.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:1px 8px}
.atlas-grp{border-bottom:1px solid var(--line);margin-bottom:8px;padding-bottom:6px}
main{padding-block:24px 72px}
.wrap.wide{max-width:1140px}

/* hero */
.hero2{position:relative;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:28px;align-items:center;background:var(--hdr);color:var(--hdr-ink);border-radius:20px;padding:clamp(22px,4vw,44px);overflow:hidden;margin-bottom:28px;box-shadow:var(--shadow)}
.hero2::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 80% at 100% 0%,rgba(0,163,184,.28),transparent 60%),radial-gradient(40% 60% at 0% 100%,rgba(0,117,144,.25),transparent 70%);pointer-events:none}
.hero2>*{position:relative;min-width:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:#7ddcea}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:#3cc6da;box-shadow:0 0 0 4px rgba(60,198,218,.2)}
.hero2 h1{font-family:var(--f-display);font-weight:600;font-size:clamp(30px,4.4vw,48px);line-height:1.06;letter-spacing:-.02em;margin:12px 0 12px;text-wrap:balance}
.hero2 h1 em{font-style:normal;color:#7ddcea}
.hero2 p{margin:0;color:#b8cad3;max-width:52ch;font-size:16px}
.hstats{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.hstats span{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:999px;padding:5px 12px;font-size:13px;color:#b8cad3}
.hstats b{color:#fff;font-weight:700;font-variant-numeric:tabular-nums}
.quick{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.quick a{color:#e9f4f7;text-decoration:none;font-size:13.5px;font-weight:600;padding:6px 12px;border-radius:999px;background:rgba(60,198,218,.14);border:1px solid rgba(60,198,218,.35)}
.quick a:hover{background:rgba(60,198,218,.28)}
.mosaic{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:150px 150px;gap:10px}
.mosaic div{border-radius:14px;background:#000 var(--img) center/cover no-repeat;position:relative;overflow:hidden;border:1px solid rgba(255,255,255,.08)}
.mosaic div::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(0,163,184,.18),rgba(13,26,35,.35))}
.mosaic div:first-child{grid-row:span 2}
.mosaic small{position:absolute;left:10px;bottom:8px;z-index:1;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:#d7e6ec}

/* section cards with scan covers */
.secs{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.sec{padding:0;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);display:flex;flex-direction:column}
.cover{height:108px;position:relative;background:#0d1a23 var(--img,none) center 35%/cover no-repeat;display:flex;align-items:flex-end;justify-content:space-between;padding:12px 14px}
.cover::before{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(10,20,27,.95) 0%,rgba(10,20,27,.45) 55%,rgba(0,117,144,.25) 100%)}
.cover.plain{background:linear-gradient(135deg,#0d1a23,#0f3a46)}
.cover>*{position:relative}
.cover h2{margin:0;font-family:var(--f-display);font-weight:600;font-size:19px;color:#fff;letter-spacing:-.01em;text-transform:none}
.cover span{font-family:var(--f-mono);font-size:11.5px;color:#cfe3ea;background:rgba(255,255,255,.12);border-radius:999px;padding:2px 9px}
.sec ul{padding:6px 16px 10px}
.sec li a{font-weight:500;font-size:14.5px}
.sec li a small{font-size:10.5px}
.sechead{display:flex;align-items:baseline;justify-content:space-between;margin:34px 0 12px}
.sechead h2{font-family:var(--f-display);font-weight:600;font-size:22px;margin:0;letter-spacing:-.01em}
.sechead a{font-size:14px;font-weight:600;text-decoration:none}
.strip h2{font-family:var(--f-display);font-size:14px;letter-spacing:0;text-transform:none;color:var(--ink)}
.chips a{border-radius:999px;font-weight:500;box-shadow:var(--shadow)}

/* entry banner */
.ebanner{position:relative;background:#0d1a23 var(--img,none) right 40%/48% auto no-repeat;color:var(--hdr-ink);border-radius:18px;padding:22px clamp(18px,3vw,30px) 20px;margin-bottom:22px;overflow:hidden;box-shadow:var(--shadow)}
.ebanner::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#0d1a23 38%,rgba(13,26,35,.82) 62%,rgba(0,117,144,.35) 100%)}
.ebanner>*{position:relative}
.ebanner .crumb,.ebanner .crumb a{color:#93a9b5}
.ebanner .crumb a:hover{color:#7ddcea}
.ebanner h1{color:#fff;font-family:var(--f-display);font-weight:600;letter-spacing:-.02em}
.ebanner .tag{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.14);color:#c4d6de}
.ebanner .tag.v{color:#7ddcea;border-color:rgba(125,220,234,.5);background:rgba(60,198,218,.1)}
.ebanner .meta{margin-bottom:0}
.ebanner .btn{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18);color:#eef5f8}
.ebanner .btn:hover{border-color:#3cc6da}
.ebanner .btn[aria-pressed="true"]{background:rgba(60,198,218,.22);border-color:#3cc6da}
.ebanner a.btn.pri,.ebanner .btn.pri{background:#3cc6da;border-color:#3cc6da;color:#0d1a23}
.crumb{font-family:var(--f-body);font-size:12.5px;font-weight:600;letter-spacing:.02em;text-transform:none}

/* softer, rounder components */
.btn{border-radius:999px;padding:6px 14px;font-weight:600;font-size:13.5px}
.tag{border-radius:999px;padding:2px 9px}
.tw,.calc,.tree,.sec,.ccard,.csec,.edimg,.empty{border-radius:var(--r)}
.tw,.calc,.tree{box-shadow:var(--shadow)}
th{background:var(--sunk);font-size:11px}
td.k{color:var(--accent)}
.entry h3,.case h3{font-family:var(--f-display);font-weight:600;font-size:19px;letter-spacing:-.01em}
.lede{font-size:16.5px;color:var(--ink)}
.note{border-left-color:var(--accent);background:var(--hl);border-radius:0 10px 10px 0}
.opts button,.trail button{border-radius:10px}
.opts button:hover{border-color:var(--accent)}
.res{border-radius:12px}
.out .big,.ask .qq,.dx p,.subh{font-family:var(--f-display)}
.calc-h{color:var(--accent)}
.figs summary{font-family:var(--f-body);font-weight:700;font-size:12px;color:var(--accent)}
.fig button{border-radius:var(--r)}
.pager a{border-radius:var(--r);box-shadow:var(--shadow)}
.src{border-top:1px solid var(--line)}

/* case section covers */
.csecs{grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px}
.csec{padding:0;overflow:hidden;box-shadow:var(--shadow)}
.csec .cover{height:96px}
.csec .cover h2{font-size:16px}
.ccard{box-shadow:var(--shadow)}
.cthumb{background:#0b1218}

@media (max-width:860px){
  .hero2{grid-template-columns:1fr}
  .mosaic{grid-template-rows:110px;grid-template-columns:repeat(4,1fr)}
  .mosaic div:first-child{grid-row:auto}
  .brand small{display:none}
}
@media (max-width:520px){.mosaic{display:none}.brand b{display:none}}