:root{
  --bg:#f6f8fc;--card:#fff;--ink:#14213d;--muted:#5b6784;--line:#e1e6f0;
  --brand:#2563eb;--brand-d:#1d4ed8;--accent:#f59e0b;--ok:#16a34a;--bad:#dc2626;
  --radius:14px;--shadow:0 6px 24px rgba(20,33,61,.08);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0e1424;--card:#172038;--ink:#eaf0ff;--muted:#9aa8c7;--line:#27324f;--shadow:0 6px 24px rgba(0,0,0,.35)}
}
*{box-sizing:border-box}
html{scroll-behavior:auto}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--brand)}
img,svg,canvas{max-width:100%}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
header.top{background:var(--card);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:0;font-weight:800;font-size:1.2rem;color:var(--ink);text-decoration:none}
.logo span{color:var(--brand)}
.logo i{margin-right:8px;display:inline-grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--brand);color:#fff;font-style:normal;font-size:1rem}
nav.main{display:flex;gap:4px 14px;flex-wrap:wrap}
nav.main a{color:var(--muted);text-decoration:none;font-weight:600;font-size:.95rem;padding:4px 2px}
nav.main a:hover,nav.main a[aria-current]{color:var(--brand)}
h1{font-size:clamp(1.6rem,4vw,2.3rem);line-height:1.2;margin:.9em 0 .3em}
h2{font-size:1.4rem;margin:1.6em 0 .4em}
h3{font-size:1.1rem;margin:1.2em 0 .3em}
.lead{color:var(--muted);margin:0 0 1rem;font-size:1.05rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.tool{margin:8px 0 16px}
.grid{display:grid;gap:16px}
.grid.two{grid-template-columns:1fr 1fr}
.grid.cards{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
@media(max-width:760px){.grid.two{grid-template-columns:1fr}}
label{display:block;font-weight:600;font-size:.9rem;margin:12px 0 4px}
input[type=text],input[type=number],input[type=url],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:inherit}
input:focus,select:focus,textarea:focus,button:focus-visible{outline:2px solid var(--brand);outline-offset:1px}
input[type=range]{width:100%}
input[type=color]{width:44px;height:36px;padding:0;border:1px solid var(--line);border-radius:8px;background:none}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border:0;border-radius:10px;background:var(--brand);color:#fff;font:inherit;font-weight:700;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--brand-d)}
.btn.alt{background:transparent;color:var(--brand);border:1px solid var(--brand)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:6px 14px;border:1px solid var(--line);border-radius:99px;background:var(--bg);color:var(--ink);font:inherit;font-size:.9rem;cursor:pointer}
.chip[aria-pressed=true]{background:var(--brand);border-color:var(--brand);color:#fff}
.drop{border:2px dashed var(--line);border-radius:var(--radius);padding:32px 16px;text-align:center;color:var(--muted);cursor:pointer;transition:.15s}
.drop:hover,.drop.over{border-color:var(--brand);background:rgba(37,99,235,.06)}
.drop strong{color:var(--ink);display:block;font-size:1.1rem}
.note{font-size:.88rem;color:var(--muted)}
.privacy{display:inline-block;background:rgba(22,163,74,.12);color:var(--ok);border-radius:99px;padding:3px 12px;font-size:.85rem;font-weight:700}
.qrbox{display:grid;place-items:center;min-height:300px;background:#fff;border-radius:12px;border:1px solid var(--line);padding:12px}
.qrbox canvas,.qrbox svg{max-width:100%;height:auto}
.files{display:grid;gap:10px;margin-top:14px}
.file{display:grid;grid-template-columns:56px 1fr auto;gap:12px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:12px;background:var(--bg)}
.file img{width:56px;height:56px;object-fit:cover;border-radius:8px}
.file .nm{font-weight:600;word-break:break-all;font-size:.92rem}
.file .sz{font-size:.85rem;color:var(--muted)}
.saved{color:var(--ok);font-weight:700}
.bar{height:8px;border-radius:99px;background:var(--line);overflow:hidden;margin-top:10px}
.bar>i{display:block;height:100%;width:0;background:var(--brand);transition:width .2s}
.result{font-size:1.6rem;font-weight:800;color:var(--brand)}
.kv{display:grid;grid-template-columns:1fr auto;gap:6px 14px;margin-top:10px}
.kv b{text-align:right}
.ad{margin:18px 0;min-height:90px;border:1px dashed var(--line);border-radius:10px;display:grid;place-items:center;color:var(--muted);font-size:.8rem;opacity:.7}
.hero{padding:28px 0 8px;text-align:center}
.hero p{max-width:640px;margin:0 auto 14px}
.tcard{display:block;text-decoration:none;color:var(--ink);transition:.15s}
.tcard:hover{transform:translateY(-3px);border-color:var(--brand)}
.tcard .ic{font-size:2rem}
.tcard h3{margin:.3em 0}
.tcard p{margin:0;color:var(--muted);font-size:.93rem}
details{border-bottom:1px solid var(--line);padding:10px 0}
summary{cursor:pointer;font-weight:700}
.seo{margin-top:8px}
.seo p,.seo li{color:var(--muted)}
footer{margin-top:40px;border-top:1px solid var(--line);background:var(--card);padding:22px 0;font-size:.9rem;color:var(--muted)}
footer .wrap{display:flex;gap:10px 24px;justify-content:space-between;flex-wrap:wrap}
footer a{color:var(--muted)}
.hidden{display:none!important}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}