:root{--ink:#0b1020;--ink2:#121a33;--tx:#e9edfb;--mut:#a3adcc;--teal:#00d1b2;--indigo:#5b6cff;--mag:#c026d3;--line:rgba(255,255,255,.14);--glass:rgba(255,255,255,.07);--r:18px;
--hd:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;--bd:"DM Sans","Segoe UI",system-ui,-apple-system,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ink);color:var(--tx);font:16px/1.6 var(--bd);min-height:100vh;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;background:radial-gradient(120% 80% at 50% 0,var(--ink2),var(--ink))}
.bg i{position:absolute;width:46vmax;height:46vmax;border-radius:50%;filter:blur(90px);opacity:.38}
.bg i:nth-child(1){background:var(--teal);top:-18vmax;left:-14vmax}
.bg i:nth-child(2){background:var(--indigo);top:20vh;right:-18vmax}
.bg i:nth-child(3){background:var(--mag);bottom:-22vmax;left:20vw;opacity:.28}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:#fff;color:#000;padding:8px 12px;border-radius:8px;z-index:9}
a{color:var(--teal)}a:hover{color:#5ff3da}
:focus-visible{outline:3px solid var(--teal);outline-offset:2px}
.glass{background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);box-shadow:0 10px 40px rgba(0,0,0,.28)}
@supports not (backdrop-filter:blur(1px)){.glass{background:rgba(24,31,58,.92)}}
.nav{position:sticky;top:10px;z-index:5;margin:10px auto 0;width:min(1120px,calc(100% - 24px));display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:10px 16px;border-radius:999px}
.nav nav{display:flex;gap:4px;flex-wrap:wrap}
.nav nav a{color:var(--mut);text-decoration:none;padding:6px 14px;border-radius:999px;font-weight:500}
.nav nav a:hover,.nav nav a[aria-current]{color:var(--tx);background:rgba(255,255,255,.1)}
.brand{font:700 1.15rem var(--hd);color:var(--tx);text-decoration:none;display:flex;align-items:center;gap:10px}
main{width:min(1120px,calc(100% - 24px));margin:0 auto}
.hero{padding:clamp(32px,7vw,72px) 0 24px;max-width:780px}
h1{font:800 clamp(2rem,5.4vw,3.5rem)/1.05 var(--hd);letter-spacing:-.02em;margin:0 0 14px}
h2{font:700 1.2rem var(--hd);margin:20px 0 10px}h3{font:700 1.05rem var(--hd);margin:0 0 6px}
.lead{color:var(--mut);font-size:1.1rem;margin:0}
.studio{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:20px;align-items:start}
.panel{border-radius:var(--r);padding:clamp(16px,3vw,26px)}
.panel h2:first-child{margin-top:0}
.preview{position:sticky;top:84px;text-align:center}
#qr{display:flex;justify-content:center;background:#fff;border-radius:14px;padding:10px;min-height:200px;align-items:center;box-shadow:0 0 0 6px rgba(255,255,255,.08)}
#qr svg,#qr canvas{max-width:100%;height:auto!important;display:block}
label{display:block;font-weight:500;font-size:.92rem;margin:10px 0 0;color:var(--mut)}
input,select,textarea{width:100%;margin-top:6px;padding:11px 12px;border-radius:12px;border:1px solid var(--line);background:rgba(8,12,28,.55);color:var(--tx);font:inherit}
select option{color:#000}
input[type=color]{padding:3px;height:44px;cursor:pointer}
input[type=range]{padding:0;accent-color:var(--teal);height:28px}
input[type=file]{padding:9px}
output{color:var(--tx);font-weight:700}
.row3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.row2{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;align-items:end}
.dirs{display:grid;grid-template-columns:repeat(8,1fr);gap:6px;margin-top:6px}
.dirs button{padding:9px 0;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--tx);font-size:1.1rem;cursor:pointer}
.dirs button:hover,.dirs button.on{background:linear-gradient(135deg,var(--teal),var(--indigo));border-color:transparent}
.btn{display:inline-block;border:0;cursor:pointer;text-decoration:none;text-align:center;font:700 1rem var(--bd);padding:12px 22px;border-radius:12px;color:#04121a;background:linear-gradient(135deg,var(--teal),#6ee7d6);transition:transform .15s,filter .15s}
.btn:hover{transform:translateY(-1px);filter:brightness(1.08);color:#04121a}
.btn.alt{background:linear-gradient(135deg,var(--indigo),var(--mag));color:#fff}.btn.alt:hover{color:#fff}
.btn.ghost{background:rgba(255,255,255,.08);color:var(--tx);border:1px solid var(--line)}.btn.ghost:hover{color:var(--tx)}
.btn.small{padding:6px 12px;font-size:.85rem}.btn:disabled{opacity:.6;cursor:wait}
.actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:16px 0 8px}.actions .btn{flex:1 1 140px}
.hint{color:var(--mut);font-size:.85rem;margin:8px 0 0;font-weight:400}.status{min-height:1.4em;color:var(--mut);font-size:.9rem;margin:10px 0 0}.status.err{color:#ff8fa3}
.narrow{max-width:720px;display:grid;gap:16px}
.shortlink{display:block;font:700 clamp(1.1rem,3.6vw,1.6rem) var(--hd);word-break:break-all;margin:6px 0}
.between{display:flex;justify-content:space-between;align-items:center;gap:10px}.between h2{margin:0}
.hist{list-style:none;padding:0;margin:12px 0 0;display:grid;gap:8px}
.hist li{padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.05);font-size:.9rem;word-break:break-all}
.hist small{display:block;color:var(--mut)}
.content{padding:48px 0 24px}.content>h2{font-size:1.6rem;margin:34px 0 14px}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.card{border-radius:var(--r);padding:20px}.card p{margin:0;color:var(--mut)}
.plain{color:var(--mut);padding-left:20px}
.faq{border-radius:14px;padding:14px 18px;margin:10px 0}.faq summary{cursor:pointer;font-weight:700}.faq p{color:var(--mut);margin:8px 0 0}
.foot{width:min(1120px,calc(100% - 24px));margin:30px auto 20px;color:var(--mut);font-size:.9rem;border-top:1px solid var(--line);padding-top:18px}
@media (max-width:860px){.studio{grid-template-columns:1fr}.preview{position:static;order:-1}.nav{border-radius:22px}}
@media (max-width:480px){.row3{grid-template-columns:1fr 1fr 1fr}.row2{grid-template-columns:1fr}.dirs{grid-template-columns:repeat(4,1fr)}body{font-size:15px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}