:root{
  --bg:#0A0E14; --panel:#111823; --panel2:#0E141D; --line:#212F40; --line2:#2C3D52;
  --text:#E8EEF6; --muted:#8695A8; --dim:#5C6B7E;
  --accent:#4EA8FF; --accent2:#2FE0BE;
  --mono:ui-monospace,"SF Mono","Cascadia Code","JetBrains Mono",Consolas,Menlo,monospace;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --radius:11px; --max:1120px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--text);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased;min-height:100vh;overflow-x:hidden}
::selection{background:rgba(78,168,255,.28)}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--text)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono)}

/* ---- nav ---- */
header.site{position:sticky;top:0;z-index:20;background:rgba(10,14,20,.72);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:.2px;font-size:17px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand .glyph{width:22px;height:22px}
.brand b{color:var(--accent);font-weight:600}
header.site nav{display:flex;gap:24px;font-family:var(--mono);font-size:13.5px;color:var(--muted)}
header.site nav a{color:var(--muted)}
header.site nav a:hover{color:var(--text)}

/* ---- type / eyebrow / badge ---- */
main.wrap{padding-bottom:8px}
h1{font-size:clamp(30px,4vw,50px);line-height:1.05;letter-spacing:-.02em;font-weight:600;margin:18px 0 0;text-wrap:balance}
h1 .g{color:var(--accent)}
h2{font-size:22px;font-weight:600;letter-spacing:-.01em;margin:34px 0 12px}
.sub,.lead{color:var(--muted);font-size:18px;line-height:1.6;margin:18px 0 0;max-width:38em}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);display:inline-flex;align-items:center;gap:8px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent2);box-shadow:0 0 8px var(--accent2)}
.badge{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);border:1px solid var(--line2);border-radius:999px;padding:5px 12px;margin-bottom:6px}

/* ---- buttons ---- */
.btn{font-family:var(--sans);font-size:15px;font-weight:600;border-radius:9px;padding:11px 18px;cursor:pointer;border:1px solid var(--line2);background:transparent;color:var(--text);transition:transform .12s,filter .12s,border-color .12s,color .12s}
.btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn.primary,#openBtn,#convertBtn,#dlBtn{background:var(--accent);color:#04121f;border-color:var(--accent)}
.btn.primary:hover,#openBtn:hover,#convertBtn:not([disabled]):hover,#dlBtn:not([disabled]):hover{filter:brightness(1.08);color:#04121f}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--line2)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
button[disabled]{opacity:.5;cursor:not-allowed}

/* ---- tool layout ---- */
.tool{display:grid;grid-template-columns:1fr 320px;gap:16px;margin:24px 0 8px}
.stage{position:relative;border:1px solid var(--line2);border-radius:14px;overflow:hidden;min-height:460px;
  background:linear-gradient(rgba(78,168,255,.04),rgba(78,168,255,0)),var(--panel2);
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:32px 32px,32px 32px}
#canvas{display:block;width:100%;height:460px;touch-action:none;position:relative;z-index:1}
.drop{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;text-align:center;padding:24px;
  background:radial-gradient(120% 90% at 50% 42%,rgba(10,14,20,.4),rgba(10,14,20,.85))}
.drop.hide{display:none}
.drop.hot{background:radial-gradient(120% 90% at 50% 42%,rgba(78,168,255,.12),rgba(10,14,20,.85));outline:1.5px dashed var(--accent);outline-offset:-14px}
.drop .big{font-size:18px;font-weight:600}
.drop>div:last-child{font-family:var(--mono);font-size:12.5px;color:var(--dim);letter-spacing:.03em}
.side{display:flex;flex-direction:column;gap:12px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:15px 16px}
.card h3{margin:0 0 11px;font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.16em;color:var(--dim);font-weight:500}
.meta{display:grid;grid-template-columns:auto 1fr;gap:7px 12px;font-family:var(--mono);font-size:13px}
.meta .k{color:var(--muted)}
.meta .v{text-align:right;color:var(--accent2);font-variant-numeric:tabular-nums}
.controls{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.controls label{display:flex;align-items:center;gap:6px;font-family:var(--mono);font-size:12.5px;color:var(--muted);background:var(--panel2);border:1px solid var(--line);border-radius:7px;padding:6px 10px;cursor:pointer}
.controls label:hover{border-color:var(--line2)}
.fields{display:flex;flex-direction:column;gap:9px}
.fields label{display:flex;align-items:center;justify-content:space-between;gap:8px;font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.fields label span{color:var(--dim);font-size:11px}
.fields input[type=number],.fields select{width:96px;background:var(--panel2);border:1px solid var(--line2);color:var(--text);border-radius:7px;padding:6px 9px;font-family:var(--mono);font-size:13px}
.fields input:focus,.fields select:focus{outline:none;border-color:var(--accent)}
.fields label.chk{justify-content:flex-start;cursor:pointer;color:var(--muted)}
.fields label.chk input{width:auto}
.privacy{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted)}
.privacy b{color:var(--accent2)}
.err{color:#ff8b8b;font-family:var(--mono);font-size:12.5px;min-height:16px}

/* ---- ad ---- */
.adslot{border:1px dashed var(--line2);border-radius:12px;color:var(--dim);text-align:center;padding:16px;margin:26px 0;font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase}

/* ---- content / faq / related grid ---- */
.content{max-width:760px}
.content p{color:#c3cedd;line-height:1.72}
.content code{font-family:var(--mono);font-size:.92em;color:var(--accent2)}
.faq details{border:1px solid var(--line);border-radius:10px;padding:0 15px;margin:10px 0;background:var(--panel)}
.faq summary{cursor:pointer;padding:13px 0;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";color:var(--accent);font-family:var(--mono);margin-right:10px}
.faq details[open] summary::before{content:"–"}
.faq p{margin:0 0 13px;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin:14px 0;max-width:none}
.grid a{font-family:var(--mono);font-size:13px;background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:12px;color:var(--text);transition:border-color .14s,transform .14s}
.grid a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.grid a .soon{display:block;font-size:11px;color:var(--dim);margin-top:3px}

/* ---- homepage: hero ---- */
.hero{padding:70px 0 44px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin:24px 0 0}
.chip{font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--muted);border:1px solid var(--line2);border-radius:6px;padding:5px 9px}
.chip.on{color:var(--accent2);border-color:rgba(47,224,190,.35)}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 0}
.trust{display:flex;align-items:center;gap:9px;margin:22px 0 0;font-family:var(--mono);font-size:13px;color:var(--dim)}
.trust svg{color:var(--accent2);flex:none}
.viewport{position:relative;border:1px solid var(--line2);border-radius:16px;overflow:hidden;aspect-ratio:1/.92;
  background:linear-gradient(rgba(78,168,255,.05),rgba(78,168,255,0)),var(--panel2)}
.viewport .paper{position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:34px 34px;-webkit-mask-image:radial-gradient(120% 90% at 50% 42%,#000 40%,transparent 100%);mask-image:radial-gradient(120% 90% at 50% 42%,#000 40%,transparent 100%)}
.viewport canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.tick{position:absolute;width:14px;height:14px;border-color:var(--line2);opacity:.9}
.tick.tl{top:12px;left:12px;border-top:1.5px solid;border-left:1.5px solid}
.tick.tr{top:12px;right:12px;border-top:1.5px solid;border-right:1.5px solid}
.tick.bl{bottom:12px;left:12px;border-bottom:1.5px solid;border-left:1.5px solid}
.tick.br{bottom:12px;right:12px;border-bottom:1.5px solid;border-right:1.5px solid}
.hud{position:absolute;left:14px;bottom:14px;font-family:var(--mono);font-size:12px;line-height:1.9}
.hud .k{color:var(--dim)}
.hud .v{color:var(--accent2)}
.badge-live{position:absolute;top:13px;right:34px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);display:flex;align-items:center;gap:6px}
.badge-live .b{width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}

/* ---- homepage: spec strip ---- */
.spec{border-block:1px solid var(--line);margin-top:54px}
.spec .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.spec .cell{padding:24px 8px;text-align:center;border-left:1px solid var(--line)}
.spec .cell:first-child{border-left:0}
.spec .n{font-family:var(--mono);font-size:26px;letter-spacing:-.01em}
.spec .n b{color:var(--accent);font-weight:600}
.spec .l{font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);margin-top:4px}

/* ---- homepage: tool sections ---- */
.tools{padding:60px 0 4px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:20px;border-bottom:1px solid var(--line);padding-bottom:13px}
.sec-head h2{margin:0}
.sec-head .count{font-family:var(--mono);font-size:12.5px;color:var(--dim);letter-spacing:.06em}
.tgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.tcard{position:relative;border:1px solid var(--line);border-radius:12px;background:var(--panel);padding:16px;transition:border-color .14s,transform .14s,background .14s;color:var(--text);display:block}
.tcard:hover{border-color:var(--accent);transform:translateY(-2px);background:#131c28;color:var(--text)}
.tcard .tag{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);background:rgba(78,168,255,.08);border:1px solid rgba(78,168,255,.2);border-radius:5px;padding:2px 7px;display:inline-block}
.tcard h3{font-size:16px;font-weight:600;margin:12px 0 2px}
.tcard p{font-family:var(--mono);font-size:12px;color:var(--muted);margin:0}
.tcard .arw{position:absolute;top:15px;right:15px;color:var(--dim);font-family:var(--mono);transition:color .14s,transform .14s}
.tcard:hover .arw{color:var(--accent);transform:translate(2px,-2px)}

/* ---- homepage: why ---- */
.why{padding:62px 0 12px}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.why .item{border-top:2px solid var(--accent);padding-top:15px}
.why .item:nth-child(2){border-color:var(--accent2)}
.why .item:nth-child(3){border-color:var(--line2)}
.why .lab{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.why .item h3{font-size:19px;margin:8px 0 6px;font-weight:600;letter-spacing:-.01em}
.why .item p{color:var(--muted);font-size:15px;margin:0}

/* ---- footer ---- */
footer.site{border-top:1px solid var(--line);margin-top:60px;padding:28px 0;color:var(--dim);font-size:13px}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
footer.site .mono,footer.site{font-size:13px}
footer.site a{color:var(--muted)}
footer.site a:hover{color:var(--text)}

@media(max-width:860px){
  .tool{grid-template-columns:1fr}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .viewport{max-width:460px}
  .spec .wrap{grid-template-columns:repeat(2,1fr)}
  .spec .cell:nth-child(3){border-left:0}
  .tgrid{grid-template-columns:repeat(2,1fr)}
  .why-grid{grid-template-columns:1fr}
  header.site nav{display:none}
}
@media(prefers-reduced-motion:reduce){.badge-live .b{animation:none}}