:root{--bg:#f8fafc;--fg:#0f172a;--mut:#64748b;--card:#fff;--bd:#e2e8f0;--ac:#4f46e5;--ok:#059669;--err:#e11d48}
[data-theme=dark]{--bg:#0f172a;--fg:#f1f5f9;--mut:#94a3b8;--card:#1e293b;--bd:#334155;--ac:#818cf8}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Tahoma,sans-serif;min-height:100vh;display:flex;flex-direction:column}
a{color:inherit}button,select,input{font:inherit;color:inherit}
header,footer{background:var(--card);border-block:1px solid var(--bd);padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
header{position:sticky;top:0;z-index:5;border-top:0}footer{border-bottom:0;justify-content:center;color:var(--mut);font-size:13px;margin-top:32px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:20px;text-decoration:none}
.logo b{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#f43f5e,#dc2626);color:#fff;display:grid;place-items:center;font-size:15px}
.bar{display:flex;gap:8px;align-items:center}
.btn,select,.ico-btn{border:1px solid var(--bd);background:var(--card);border-radius:10px;padding:6px 12px;cursor:pointer}
.btn.pri{background:var(--ac);border-color:var(--ac);color:#fff;font-weight:700;padding:12px;width:100%}.btn:disabled{opacity:.5;cursor:wait}
:focus-visible{outline:3px solid var(--ac);outline-offset:2px}
.hero{text-align:center;padding:40px 16px 8px}.hero h1{font-size:clamp(28px,5vw,46px);margin:0 0 8px;line-height:1.15}.hero p{color:var(--mut);margin:0 auto 20px;max-width:640px}
#q{width:min(440px,100%);padding:10px 14px;border:1px solid var(--bd);border-radius:14px;background:var(--card)}
main{flex:1;width:min(1100px,100%);margin:0 auto;padding:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--bd);border-radius:16px;padding:20px 10px;text-align:center;text-decoration:none;font-weight:700;font-size:14px;display:flex;flex-direction:column;gap:8px;align-items:center;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 20px #0001;border-color:var(--ac)}.card i{font-style:normal;font-size:28px}
.empty{text-align:center;color:var(--mut);display:none}
dialog{border:1px solid var(--bd);border-radius:20px;background:var(--card);color:var(--fg);width:min(560px,94vw);padding:24px;max-height:92vh}#sign{width:min(780px,96vw)}
dialog::backdrop{background:#0f172a99}dialog h2{margin:0 0 12px;font-size:20px}.x{position:absolute;inset-block-start:12px;inset-inline-end:12px}
.drop{position:relative;display:block;border:2px dashed var(--bd);border-radius:14px;padding:26px 12px;text-align:center;cursor:pointer}.drop.on,.drop:hover{border-color:var(--ac);background:#4f46e50d}
.drop small{display:block;color:var(--mut)}.drop input{position:absolute;opacity:0;width:1px;height:1px}
ul.files{list-style:none;margin:10px 0;padding:0;font-size:14px}ul.files li{display:flex;gap:6px;align-items:center;padding:4px 0}ul.files span{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.opt{margin:12px 0;display:grid;gap:4px}.opt input,.opt select{width:100%;padding:8px}
[role=status]{margin-top:12px;padding:10px;border-radius:10px;font-size:14px;text-align:center;display:none}
.st-ok{display:block!important;background:#05966922;color:var(--ok)}.st-err{display:block!important;background:#e11d4822;color:var(--err)}.st-wait{display:block!important;background:#4f46e51a}
#pad{width:100%;height:120px;background:#fff;border:1px dashed var(--mut);border-radius:12px;touch-action:none;cursor:crosshair;display:block}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:10px 0;font-size:14px}.dot{width:22px;height:22px;border-radius:50%;border:2px solid transparent;padding:0}.dot[aria-pressed=true]{border-color:var(--ac)}
.pg{position:relative;display:block;width:fit-content;max-width:100%;margin:0 auto;border:1px solid var(--bd)}.pg canvas{display:block;max-width:100%;height:auto;cursor:copy}
.ov{position:absolute;inset:0;pointer-events:none}.ov img{position:absolute;width:22%;height:auto;transform:translate(-50%,-50%)}
.legal{font-size:14px;color:var(--mut)}.legal b{color:var(--fg)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.faq-section{width:min(900px,100%);margin:24px auto 0;padding:24px 28px;background:var(--card);border:1px solid var(--bd);border-radius:18px}
.faq-section:empty{display:none}
.faq-section h2{margin:0 0 20px;font-size:clamp(20px,3.5vw,26px);line-height:1.25}
.faq-item{border-top:1px solid var(--bd);padding:16px 0}
.faq-item:first-of-type{border-top:0;padding-top:0}
.faq-item:last-of-type{padding-bottom:0}
.faq-item h3{margin:0 0 8px;font-size:16px;font-weight:700}
.faq-item p{margin:0;color:var(--mut);font-size:14.5px;line-height:1.6}
.seo{width:min(800px,100%);margin:24px auto;padding:0 16px}
.seo:empty{display:none}
.seo h2{font-size:22px;margin-top:24px}
.seo h3{font-size:17px;margin:16px 0 4px}
.seo p,.seo li{color:var(--mut);line-height:1.6}
.seo ol{padding-inline-start:20px}
.guides{width:min(900px,100%);margin:32px auto 8px;padding:0 16px}
.guides h2{font-size:16px;margin:0 0 12px;color:var(--mut)}
.guides ul{display:flex;flex-wrap:wrap;gap:8px 18px;list-style:none;margin:0;padding:0;font-size:14px}
.guides:has(ul:empty){display:none}