:root{
  --bg:#0a0e14; --bg2:#0e1420; --panel:#121a28; --panel2:#16202f;
  --line:#22304a; --line2:#2d3f5e;
  --ink:#eef3fb; --ink2:#9fb0c9; --ink3:#6b7e9c;
  --lava:#ff3621; --lava2:#ff6a52; --amber:#ffab00;
  --cyan:#15afdd; --blue:#2375a8; --green:#52a870; --pink:#c85070; --gold:#c89930;
  --good:#3ddc84; --warn:#ffab00; --bad:#ff5470;
  --r:14px; --r2:10px;
  --shadow:0 18px 50px -20px rgba(0,0,0,.7);
  --heroblob:#16243a;
}
[data-theme="light"]{
  --bg:#f4f7fb; --bg2:#eef2f8; --panel:#ffffff; --panel2:#f7f9fd;
  --line:#dce3ee; --line2:#c4d0e0;
  --ink:#0b1422; --ink2:#3f4d63; --ink3:#6b7a92;
  --shadow:0 16px 40px -22px rgba(20,40,80,.35);
  --heroblob:#dbe6f5;
}
[data-theme="light"] body{background:radial-gradient(1200px 700px at 80% -10%,var(--heroblob) 0%,var(--bg) 55%) fixed,var(--bg);}
[data-theme="light"] .topnav{background:rgba(255,255,255,.82)}
[data-theme="light"] .kicker,[data-theme="light"] .simtitle .lab{background:#fff}
[data-theme="light"] input[type=range]{background:var(--line2)}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1200px 700px at 80% -10%,#16243a 0%,var(--bg) 55%) fixed,var(--bg);
  color:var(--ink); font-family:Inter,system-ui,sans-serif; line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Space Grotesk',sans-serif;letter-spacing:-.01em;margin:0}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
button{font-family:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- top nav ---------- */
.topnav{position:sticky;top:0;z-index:40;backdrop-filter:blur(12px);
  background:rgba(10,14,20,.82);border-bottom:1px solid var(--line)}
.topnav .row{display:flex;align-items:center;justify-content:flex-end;gap:11px;min-height:60px;flex-wrap:wrap;row-gap:7px}
.brand{display:flex;align-items:center;gap:10px;cursor:pointer;font-weight:700;
  font-family:'Space Grotesk';font-size:16px}
.brand .dot{width:13px;height:13px;border-radius:3px;background:var(--lava)}
.brand small{color:var(--ink3);font-weight:500;font-size:11px;letter-spacing:.14em;text-transform:uppercase}
.navspace{flex:1}
.navbtn{background:transparent;border:1px solid var(--line2);color:var(--ink2);
  padding:7px 13px;border-radius:99px;font-size:13px;cursor:pointer;transition:.15s;white-space:nowrap}
.navbtn:hover{border-color:var(--lava);color:var(--ink)}
.navbtn[disabled]{opacity:.3;cursor:not-allowed}
.navbtn.ico{padding:8px 11px;font-size:15px;line-height:1}

/* ---------- secondary nav: sibling capabilities in the current category ---------- */
.subnav{position:sticky;top:60px;z-index:39;backdrop-filter:blur(12px);
  background:rgba(10,14,20,.92);border-bottom:1px solid var(--line)}
.subnav[hidden]{display:none}
[data-theme="light"] .subnav{background:rgba(255,255,255,.9)}
.subrow{display:flex;align-items:center;gap:14px;min-height:46px;padding-top:7px;padding-bottom:7px}
.sublabel{font-size:11px;font-weight:600;letter-spacing:.11em;text-transform:uppercase;
  color:var(--sc,var(--lava));white-space:nowrap;flex-shrink:0}
.subchips{display:flex;gap:8px;overflow-x:auto;scrollbar-width:thin;padding-bottom:2px}
.subchips::-webkit-scrollbar{height:6px}
.subchips::-webkit-scrollbar-thumb{background:var(--line2);border-radius:99px}
.subchip{background:transparent;border:1px solid var(--line2);color:var(--ink3);
  padding:6px 12px;border-radius:99px;font-size:12.5px;cursor:pointer;white-space:nowrap;transition:.15s}
.subchip:hover{border-color:var(--sc,var(--lava));color:var(--ink)}
.subchip.on{background:rgba(255,255,255,.06);border-color:var(--sc,var(--lava));
  color:var(--sc,var(--lava));font-weight:600}

/* ---------- landing hero ---------- */
.hero{padding:54px 0 14px;text-align:center;position:relative}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--lava2);border:1px solid var(--line2);
  padding:6px 14px;border-radius:99px;background:var(--panel)}
.hero h1{font-size:clamp(34px,5.4vw,62px);line-height:1.02;margin:18px 0 8px;font-weight:700}
.hero h1 .grad{color:var(--lava)}
.hero p.sub{color:var(--ink2);font-size:18px;max-width:680px;margin:6px auto 0}
.herometa{display:flex;gap:26px;justify-content:center;flex-wrap:wrap;margin-top:22px}
.herometa .m{text-align:center}
.herometa .m b{font-family:'Space Grotesk';font-size:24px;display:block;color:var(--ink)}
.herometa .m span{font-size:12px;color:var(--ink3);letter-spacing:.04em}

/* ---------- landing: hero + elevated category cards ---------- */
.lhero{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center;padding:34px 0 14px}
.lhero .lhcopy{text-align:left}
.lhero h1{font-size:clamp(30px,4.6vw,52px);line-height:1.05;margin:16px 0 14px;font-weight:700}
.lhero h1 .grad{color:var(--lava)}
.lsub{color:var(--ink2);font-size:17px;max-width:520px;margin:0 0 20px;line-height:1.5}
.lhillus{display:flex;justify-content:center}
.lhillus img{max-width:100%;width:440px;border-radius:18px}
@media(max-width:860px){.lhero{grid-template-columns:1fr;padding-top:20px}.lhillus{display:none}}

.catgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:6px}
@media(max-width:1000px){.catgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.catgrid{grid-template-columns:1fr}}
.catcard{position:relative;display:block;text-align:left;font:inherit;cursor:pointer;
  background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px 20px 18px;
  color:var(--ink);transform:translateY(-4px);
  box-shadow:0 12px 26px -10px rgba(0,0,0,.55), 0 2px 0 rgba(0,0,0,.04);
  transition:transform .14s ease, box-shadow .14s ease, border-color .14s ease}
.catcard:hover{transform:translateY(0);border-color:var(--cc);box-shadow:0 5px 14px -8px rgba(0,0,0,.5)}
.catcard:active{transform:translateY(3px);box-shadow:0 1px 5px -3px rgba(0,0,0,.5)}
.catcard:focus-visible{outline:2px solid var(--cc);outline-offset:3px}
.cicon{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;margin-bottom:16px;
  background:color-mix(in srgb,var(--cc) 16%, transparent);color:var(--cc)}
.cicon svg{width:26px;height:26px}
.cname{display:block;font-family:'Space Grotesk',Inter,sans-serif;font-weight:600;font-size:17.5px;
  line-height:1.25;color:var(--ink)}
.cdiv{display:block;width:32px;height:3px;border-radius:3px;background:var(--cc);margin:13px 0 11px}
.csub{display:block;color:var(--ink3);font-size:13.5px}
.cgo{position:absolute;right:18px;top:18px;width:30px;height:30px;border-radius:50%;
  border:1px solid var(--line2);display:grid;place-items:center;color:var(--cc);font-size:14px;transition:.14s}
.catcard:hover .cgo{border-color:var(--cc);background:color-mix(in srgb,var(--cc) 14%, transparent)}
.catcard.done .cgo{border-color:var(--cc);background:color-mix(in srgb,var(--cc) 16%, transparent)}
/* per-category progress */
.cprog{display:flex;align-items:center;gap:8px;margin-top:14px}
.cprog-bar{flex:1;height:4px;border-radius:99px;background:var(--line2);overflow:hidden}
.cprog-bar i{display:block;height:100%;border-radius:99px;background:var(--cc,var(--lava));transition:width .4s ease}
.cprog-n{font-size:11px;color:var(--ink3);white-space:nowrap;font-variant-numeric:tabular-nums}
/* global progress (in hero controls row) */
.lprog{display:inline-flex;align-items:center;gap:9px}
.lprog-bar{width:90px;height:5px;border-radius:99px;background:var(--line2);overflow:hidden}
.lprog-bar i{display:block;height:100%;border-radius:99px;background:var(--lava);transition:width .4s ease}
.lprog-n{font-size:12px;color:var(--ink3);white-space:nowrap;font-variant-numeric:tabular-nums}

/* ---------- stack diagram (landing) ---------- */
.stackhead{display:flex;align-items:end;justify-content:space-between;margin:46px 0 14px;gap:16px;flex-wrap:wrap}
.stackhead h2{font-size:26px}
.stackhead .hint{font-size:13px;color:var(--ink3)}
.stack{display:flex;flex-direction:column;gap:12px;position:relative;padding-bottom:8px}
.layer{display:grid;grid-template-columns:210px 1fr;gap:16px;align-items:center;
  background:linear-gradient(90deg,var(--panel) 0%,var(--panel2) 100%);
  border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;position:relative;overflow:hidden}
.layer::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--lc,var(--lava))}
.layer .ltitle{display:flex;flex-direction:column;gap:3px}
.layer .ltitle b{font-family:'Space Grotesk';font-size:15px}
.layer .ltitle span{font-size:11px;color:var(--ink3);text-transform:uppercase;letter-spacing:.1em}
.nodes{display:flex;flex-wrap:wrap;gap:9px}
.node{display:inline-flex;align-items:center;gap:8px;cursor:pointer;
  background:var(--bg2);border:1px solid var(--line2);border-radius:10px;
  padding:9px 13px;font-size:13.5px;color:var(--ink);transition:.16s;position:relative}
.node:hover{border-color:var(--lc,var(--lava));transform:translateY(-2px);
  box-shadow:0 10px 22px -12px var(--lc,var(--lava))}
.node .ndot{width:7px;height:7px;border-radius:50%;background:var(--lc,var(--lava))}
.node .flag{font-size:9px;letter-spacing:.08em;text-transform:uppercase;color:var(--bg);
  background:var(--lc,var(--lava));padding:2px 6px;border-radius:6px;font-weight:700}

/* ---------- detail screen ---------- */
.screen{padding:26px 0 70px;animation:fade .35s ease}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.shead{display:flex;flex-direction:column;gap:8px;margin-bottom:8px}
.shead .tag{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--lava2)}
.shead h1{font-size:clamp(26px,4vw,40px)}
.shead p.sum{color:var(--ink2);font-size:17px;max-width:760px;margin:4px 0 0}
.grid2{display:grid;grid-template-columns:1.05fr .95fr;gap:20px;margin-top:22px}
@media(max-width:880px){.grid2{grid-template-columns:1fr}.layer{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:18px;box-shadow:var(--shadow)}
.card h3{font-size:15px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.card h3 .ic{color:var(--lava2)}
.bullets{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.bullets li{display:flex;gap:10px;font-size:14px;color:var(--ink2)}
.bullets li::before{content:"";flex:0 0 7px;height:7px;border-radius:50%;
  background:var(--lava);margin-top:7px;box-shadow:0 0 8px var(--lava)}
.bullets li b{color:var(--ink);font-weight:600}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(104px,1fr));gap:8px;margin-top:4px}
.stat{background:var(--bg2);border:1px solid var(--line);border-radius:var(--r2);padding:9px 11px}
.stat b{font-family:'Space Grotesk';font-size:17px;line-height:1.15;display:block;
  color:var(--lava)}
.stat span{font-size:10.5px;color:var(--ink3);line-height:1.35;display:block;margin-top:1px}
.docs{margin-top:18px;font-size:14px;color:var(--ink3);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.docslink{display:inline-flex;align-items:center;gap:8px;color:var(--ink);
  border:1px solid var(--line2);border-radius:99px;padding:8px 15px;font-weight:500;font-size:13.5px;transition:.15s}
.docslink:hover{border-color:var(--lava);color:var(--lava2);text-decoration:none}

/* ---------- sim box ---------- */
.simwrap{margin-top:22px}
.simbox{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:18px;box-shadow:var(--shadow)}
.simtitle{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.simtitle h3{font-size:16px}
.simtitle .lab{font-size:11px;color:var(--lava2);letter-spacing:.14em;text-transform:uppercase;
  border:1px solid var(--line2);padding:4px 10px;border-radius:99px}
.controls{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:14px}
.ctl{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--ink3)}
.ctl label{letter-spacing:.04em}
input[type=range]{-webkit-appearance:none;appearance:none;height:6px;border-radius:99px;
  background:var(--line2);width:200px;outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;
  border-radius:50%;background:var(--lava);cursor:pointer;box-shadow:0 0 10px var(--lava)}
.seg{display:inline-flex;background:var(--bg2);border:1px solid var(--line2);border-radius:99px;padding:3px}
.seg button{background:transparent;border:none;color:var(--ink2);padding:7px 14px;border-radius:99px;
  cursor:pointer;font-size:13px;transition:.15s}
.seg button.on{background:var(--lava);color:#fff;font-weight:600}
.btn{background:var(--lava);border:none;color:#fff;padding:9px 16px;border-radius:10px;
  cursor:pointer;font-weight:600;font-size:13px;transition:.15s}
.btn:hover{background:var(--lava2)}
.btn.ghost{background:transparent;border:1px solid var(--line2);color:var(--ink2)}
.btn.ghost:hover{border-color:var(--lava);color:var(--ink)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--bg2);border:1px solid var(--line2);
  border-radius:99px;padding:6px 12px;font-size:12.5px;cursor:pointer;color:var(--ink2);transition:.15s}
.chip:hover{border-color:var(--lava);color:var(--ink)}
.chip.on{background:rgba(255,54,33,.14);border-color:var(--lava);color:var(--ink)}
.simgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:780px){.simgrid{grid-template-columns:1fr}}
.readout{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px}
.ro{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:11px 13px;text-align:center}
.ro b{font-family:'Space Grotesk';font-size:21px;display:block;color:var(--ink)}
.ro span{font-size:11px;color:var(--ink3)}
.canvasbox{position:relative;height:240px}
.note{font-size:12px;color:var(--ink3);margin-top:10px}
.flowcanvas{width:100%;border-radius:10px;background:var(--bg2);border:1px solid var(--line);display:block}
.pill{font-size:10px;padding:2px 8px;border-radius:99px;font-weight:600}
.pill.ga{background:rgba(61,220,132,.16);color:var(--good)}
.pill.pp{background:rgba(255,171,0,.16);color:var(--amber)}
.pill.beta{background:rgba(21,175,221,.16);color:var(--cyan)}
.meter{height:14px;border-radius:99px;background:var(--bg2);border:1px solid var(--line2);overflow:hidden;position:relative}
.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--green),var(--amber),var(--lava));transition:width .4s}
.mono{font-family:'Space Grotesk',ui-monospace,monospace}
.sqlbox{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;
  font-family:ui-monospace,'SF Mono',Menlo,monospace;font-size:12.5px;color:var(--ink2);white-space:pre-wrap;line-height:1.6}
.sqlbox .kw{color:var(--lava2);font-weight:600}
.sqlbox .fn{color:var(--cyan)}

/* ---------- narration ---------- */
/* Narrate mic — persistent nav button beside the theme toggle */
.micbtn{display:inline-flex;align-items:center;gap:5px;line-height:1}
.micbtn .micglyph{font-size:14px;line-height:1}
.micbtn .wave{display:none;gap:2px;align-items:center;height:13px}
.micbtn .wave i{width:3px;height:4px;background:var(--lava2);border-radius:2px;display:inline-block}
.micbtn.playing{border-color:var(--lava);color:var(--ink);background:rgba(255,54,33,.12)}
.micbtn.playing .wave{display:inline-flex}
.micbtn.playing .wave i{animation:wv .9s ease-in-out infinite}
.micbtn.playing .wave i:nth-child(2){animation-delay:.15s}
.micbtn.playing .wave i:nth-child(3){animation-delay:.3s}
.micbtn.playing .wave i:nth-child(4){animation-delay:.45s}
@keyframes wv{0%,100%{height:4px}50%{height:14px}}

.footer{padding:40px 0;text-align:center;color:var(--ink3);font-size:12.5px;border-top:1px solid var(--line);margin-top:30px}
.kbd{font-size:11px;color:var(--ink3);border:1px solid var(--line2);border-radius:6px;padding:1px 6px}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--panel2);
  border:1px solid var(--lava);color:var(--ink);padding:10px 18px;border-radius:99px;font-size:13px;
  box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s;z-index:99}
.toast.show{opacity:1}

/* ===================================================================
   GLOSSARY
   =================================================================== */
.gloss{display:flex;flex-direction:column;gap:26px;margin-top:24px}
.glayer{position:relative}
.glhead{display:flex;align-items:baseline;gap:12px;margin-bottom:10px;
  padding-left:12px;border-left:4px solid var(--lc,var(--lava))}
.glhead b{font-family:'Space Grotesk';font-size:17px}
.glhead span{font-size:11px;color:var(--ink3);text-transform:uppercase;letter-spacing:.1em}
/* search + view toggle */
.glosstools{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:14px}
#glossSearch{flex:1;min-width:200px;max-width:420px;background:var(--panel);
  border:1px solid var(--line2);border-radius:99px;color:var(--ink);
  padding:9px 16px;font-size:13.5px;font-family:inherit;outline:none;transition:border-color .18s}
#glossSearch::placeholder{color:var(--ink3)}
#glossSearch:focus{border-color:var(--lava)}
.glossempty{text-align:center;color:var(--ink3);font-size:14px;margin-top:30px}

.grows{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:10px}
.grow{display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r2);
  transition:border-color .18s,transform .18s,box-shadow .18s}
.grow:hover{border-color:var(--lc,var(--lava));transform:translateY(-2px);
  box-shadow:0 10px 22px -14px var(--lc,var(--lava))}
.ghit{display:flex;align-items:flex-start;gap:12px;text-decoration:none;padding:13px 15px}
.grow .gdot{flex:0 0 8px;height:8px;border-radius:50%;margin-top:6px;
  background:var(--lc,var(--lava));box-shadow:0 0 8px var(--lc,var(--lava))}
.gmain{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}
.gterm{font-weight:600;color:var(--ink);display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.gtag{font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;font-weight:700;
  color:var(--lc,var(--lava));border:1px solid var(--line2);border-radius:6px;padding:2px 6px}
.gsum{font-size:12.5px;color:var(--ink2);line-height:1.45}
.ggo{flex:0 0 auto;align-self:center;font-size:12px;color:var(--ink3);font-weight:600}
.grow:hover .ggo{color:var(--lc,var(--lava))}
.gdocs{display:inline-flex;align-self:flex-start;text-decoration:none;
  margin:0 15px 12px 32px;font-size:11.5px;font-weight:600;color:var(--ink3);
  border-bottom:1px dashed var(--line2);padding-bottom:1px;transition:color .18s,border-color .18s}
.gdocs:hover{color:var(--lc,var(--lava));border-color:var(--lc,var(--lava))}

/* About popover (persistent, anchored top-right over a dim backdrop) */
[hidden]{display:none}
.aboutbtn{padding:7px 11px}
.about-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:50}
.about-pop{position:fixed;top:64px;right:18px;width:min(340px,92vw);z-index:51;padding:18px 20px}
.about-pop .about-desc{font-size:13.5px;line-height:1.5;color:var(--ink2);margin:0 0 14px}
.about-pop .about-li{margin:0 0 12px 0;align-self:auto}
.about-pop .li-badge{display:inline-flex;align-items:center;justify-content:center;
  width:16px;height:16px;border-radius:3px;background:#0a66c2;color:#fff;
  font-size:10px;font-weight:700;line-height:1;margin-right:7px}
.about-ver{color:var(--ink3)}

/* ===================================================================
   INTERACTIVE PLATFORM MAP (landing)
   =================================================================== */
.maphint{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;
  margin:4px 0 16px;color:var(--ink3);font-size:13px}
.platmap{position:relative;max-width:1000px;margin:0 auto;border-radius:var(--r);
  overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:#fdfdfb}
.platmap img{display:block;width:100%;height:auto;-webkit-user-drag:none;user-select:none}
.hotlayer{position:absolute;inset:0}
.hot{position:absolute;display:block;border-radius:9px;text-decoration:none;
  border:none;background:transparent;cursor:pointer;z-index:2}
.hot:hover{background:transparent}
.hot::after{content:attr(data-l);position:absolute;left:50%;bottom:calc(100% + 7px);
  transform:translateX(-50%) translateY(4px);white-space:nowrap;pointer-events:none;
  background:var(--ink);color:var(--bg);font-size:11.5px;font-weight:600;
  padding:4px 9px;border-radius:7px;opacity:0;transition:opacity .15s,transform .15s;
  box-shadow:0 6px 18px -6px rgba(0,0,0,.5);z-index:5}
.hot:hover::after{opacity:1;transform:translateX(-50%) translateY(0)}
@media (max-width:560px){ .hot::after{display:none} }

/* ===================================================================
   WELCOME (first-run intro)
   =================================================================== */
.welcome{max-width:820px;margin:0 auto}
.hero.welcome{padding-bottom:8px}
.wsection{margin-top:30px}
.wh{display:flex;align-items:center;gap:11px;font-size:22px}
.wnum{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;
  border-radius:50%;background:var(--lava);color:#fff;font-size:14px;font-weight:700;
  font-family:'Space Grotesk';flex:0 0 28px}
.wbody{color:var(--ink2);font-size:16px;margin:14px 0 0}
.wbody b{color:var(--ink);font-weight:600}
.wchips{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.wchips .chip{cursor:default;color:var(--ink);border-color:var(--lava)}
.platdiagram{max-width:410px;margin:26px auto 6px;border-radius:var(--r);overflow:hidden}
.platdiagram img{display:block;width:100%;height:auto;border-radius:var(--r);-webkit-user-drag:none;user-select:none}
.wcta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:34px;
  padding-top:26px;border-top:1px solid var(--line)}
.navbtn.primary{background:var(--lava);border-color:var(--lava);color:#fff;font-size:14px;padding:10px 20px}
.navbtn.primary:hover{background:var(--lava2);border-color:var(--lava2);color:#fff}
.wlink{color:var(--ink2);font-size:14px;font-weight:500}
.wlink:hover{color:var(--lava2)}

/* ---------- music page: "Sounds of Data" ---------- */
#yt-player{position:fixed;left:0;bottom:0;width:1px;height:1px;opacity:0;pointer-events:none;z-index:-1;overflow:hidden}
.musichero{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;padding:30px 0 6px}
.mh-copy{text-align:left}
.musichero h1{font-size:clamp(30px,4.6vw,52px);line-height:1.05;margin:14px 0 12px;font-weight:700}
.musichero .controls{margin-top:4px}
@media(max-width:860px){.musichero{grid-template-columns:1fr}.musicviz{display:none}}

/* decorative visualizer — idle/flat when paused, lively when .on (music playing) */
.musicviz{display:flex;align-items:flex-end;gap:3px;height:170px}
.musicviz i{flex:1;min-width:2px;height:12%;border-radius:3px 3px 0 0;
  background:linear-gradient(to top,var(--lava),var(--lava2));opacity:.85;transition:height .3s ease}
.musicviz.on i{animation:vizbar var(--dur,1s) ease-in-out infinite;animation-delay:var(--d,0s)}
@keyframes vizbar{0%,100%{height:14%}25%{height:72%}50%{height:34%}75%{height:92%}}
.msec{font-family:'Space Grotesk',Inter,sans-serif;font-size:18px;font-weight:600;color:var(--ink);margin:26px 0 12px}

.trackgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
@media(max-width:1000px){.trackgrid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.trackgrid{grid-template-columns:repeat(2,1fr)}}
.tcard{display:flex;flex-direction:column;gap:5px;text-align:left;font:inherit;cursor:pointer;color:var(--ink);
  background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:10px;transition:transform .14s,border-color .14s}
.tcard:hover{transform:translateY(-3px);border-color:var(--lava)}
.tthumb{position:relative;border-radius:10px;overflow:hidden;aspect-ratio:16/10}
.tthumb img{width:100%;height:100%;object-fit:cover;display:block}
.tplay{position:absolute;inset:0;display:grid;place-items:center;font-size:24px;color:#fff;
  background:rgba(0,0,0,.30);opacity:0;transition:opacity .14s}
.tcard:hover .tplay,.plthumb:hover .tplay{opacity:1}
.tname{font-weight:600;font-size:14px;line-height:1.25;margin-top:4px}
.tmeta{font-size:12px;color:var(--ink3)}

.plgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:900px){.plgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.plgrid{grid-template-columns:1fr}}
.plcard{display:flex;align-items:center;gap:12px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:10px 12px}
.plthumb{position:relative;width:54px;height:54px;border-radius:10px;overflow:hidden;flex-shrink:0;
  border:none;padding:0;background:none;cursor:pointer}
.plthumb img{width:100%;height:100%;object-fit:cover;display:block}
.plthumb .tplay{font-size:18px}
.plbody{flex:1;min-width:0}
.plname{font-weight:600;font-size:14px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.plopen{font-size:12px;color:var(--lava2);border:1px solid var(--line2);border-radius:99px;padding:5px 11px;
  text-decoration:none;white-space:nowrap;flex-shrink:0}
.plopen:hover{border-color:var(--lava);color:var(--ink)}

.spotgrid{display:grid;grid-template-columns:1fr;gap:14px;max-width:680px}
.spotembed{width:100%;height:352px;border:0;border-radius:14px}

/* fixed player bar */
.player{position:fixed;left:0;right:0;bottom:0;z-index:45;display:grid;grid-template-columns:1fr auto 1fr;
  align-items:center;gap:18px;padding:10px 22px;background:rgba(10,14,20,.94);backdrop-filter:blur(12px);
  border-top:1px solid var(--line)}
[data-theme="light"] .player{background:rgba(255,255,255,.94)}
.pl-now{display:flex;align-items:center;gap:11px;min-width:0}
.pl-now img{width:46px;height:46px;border-radius:8px;object-fit:cover;flex-shrink:0}
.pl-info{min-width:0}
.pl-title{font-weight:600;font-size:13.5px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.eq{display:flex;align-items:flex-end;gap:3px;height:20px;margin-left:4px;flex-shrink:0}
.eq i{width:3px;height:5px;background:var(--lava2);border-radius:2px}
.eq.on i{animation:eqbar .9s ease-in-out infinite}
.eq.on i:nth-child(2){animation-delay:.15s}
.eq.on i:nth-child(3){animation-delay:.3s}
.eq.on i:nth-child(4){animation-delay:.45s}
.eq.on i:nth-child(5){animation-delay:.6s}
@keyframes eqbar{0%,100%{height:5px}50%{height:20px}}
.pl-center{display:flex;flex-direction:column;align-items:center;gap:6px;min-width:300px}
.pl-transport{display:flex;align-items:center;gap:14px}
.pl-ctl{background:none;border:none;color:var(--ink2);font-size:16px;cursor:pointer;line-height:1;transition:color .12s}
.pl-ctl:hover{color:var(--ink)}
.pl-ctl.on{color:var(--lava)}
.pl-main{width:38px;height:38px;border-radius:50%;background:var(--lava);color:#fff;display:grid;place-items:center;font-size:14px}
.pl-main:hover{color:#fff;filter:brightness(1.1)}
.pl-prog{display:flex;align-items:center;gap:10px;width:100%}
.pl-t{font-size:11px;color:var(--ink3);width:34px;text-align:center;flex-shrink:0}
.pl-seek{flex:1;height:5px;border-radius:99px;background:var(--line2);cursor:pointer;position:relative}
.pl-fill{height:100%;width:0;border-radius:99px;background:var(--lava)}
.pl-vol{display:flex;align-items:center;gap:8px;justify-content:flex-end;color:var(--ink3)}
.pl-vol input{width:90px}
@media(max-width:760px){.player{grid-template-columns:1fr;gap:7px;padding:8px 16px}.pl-vol{display:none}.pl-center{min-width:0}}

/* nav "Jump…" search button + shortcut badge */
.searchbtn{display:inline-flex;align-items:center;gap:7px}
.searchbtn-lbl{font-size:13px}
.kbd{font-family:inherit;font-size:10.5px;line-height:1.5;color:var(--ink3);
  border:1px solid var(--line2);border-radius:5px;padding:0 5px;white-space:nowrap}
.searchbtn:hover .kbd{border-color:var(--lava);color:var(--ink2)}
@media(max-width:720px){ .searchbtn-lbl,.searchbtn .kbd{display:none} }

/* ---------- command palette (⌘K) ---------- */
.cmdk{position:fixed;inset:0;z-index:60;background:rgba(4,7,12,.55);backdrop-filter:blur(3px);
  display:flex;justify-content:center;align-items:flex-start;padding:12vh 16px 16px}
.cmdk[hidden]{display:none}
.cmdk-box{width:100%;max-width:560px;background:var(--panel);border:1px solid var(--line2);
  border-radius:14px;box-shadow:0 24px 60px -12px rgba(0,0,0,.6);overflow:hidden}
#cmdk-input{width:100%;box-sizing:border-box;background:transparent;border:0;outline:0;
  color:var(--ink);font-size:16px;font-family:inherit;padding:16px 18px;border-bottom:1px solid var(--line)}
#cmdk-input::placeholder{color:var(--ink3)}
#cmdk-list{list-style:none;margin:0;padding:6px;max-height:48vh;overflow-y:auto}
.cmdk-item{display:flex;align-items:baseline;gap:10px;padding:10px 12px;border-radius:9px;cursor:pointer}
.cmdk-item.on{background:rgba(255,54,33,.14)}
.cmdk-label{color:var(--ink);font-size:14px;font-weight:500}
.cmdk-sub{margin-left:auto;color:var(--ink3);font-size:12px;white-space:nowrap}
.cmdk-empty{padding:14px 12px;color:var(--ink3);font-size:14px}