:root{--bg:#f8fafc;--card:#fff;--ink:#0f172a;--muted:#475569;--line:#e2e8f0;--brand:#1d4ed8;--brand-ink:#fff;--warn-bg:#fef3c7;--warn-ink:#78350f;--ok:#166534;--err:#b91c1c;--r:12px;color:var(--ink);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}body{margin:0}.wrap{max-width:760px;margin:0 auto;padding:0 16px}a{color:var(--brand)}.top{background:var(--card);border-bottom:1px solid var(--line)}.top-in{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;min-height:56px;display:flex}.logo{color:var(--ink);font-size:1.25rem;font-weight:800;text-decoration:none}.top nav{gap:4px;display:flex}.top nav a{color:var(--muted);border-radius:8px;padding:10px;font-weight:600;text-decoration:none}.top nav a[aria-current=page]{color:var(--brand);background:#eff6ff}h1{margin:24px 0 8px;font-size:1.75rem;line-height:1.2}.lead{color:var(--muted);margin:0 0 20px}h2{margin:32px 0 12px;font-size:1.2rem}.content p{margin:0 0 12px}.steps{margin:0 0 12px;padding-left:1.4em}.steps li{margin:6px 0}.ad-slot{--ad-h:100px;min-height:var(--ad-h);margin:24px 0}.related ul{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.related a{border:1px solid var(--line);background:var(--card);border-radius:10px;padding:10px 14px;font-weight:600;text-decoration:none;display:inline-block}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px}.drop{border-radius:var(--r);text-align:center;cursor:pointer;background:#eff6ff;border:2px dashed #93c5fd;padding:28px 16px;display:block}.drop.over{background:#dbeafe}.drop strong{font-size:1.05rem;display:block}.drop span{color:var(--muted);font-size:.9rem}.drop input{opacity:0;width:1px;height:1px;position:absolute}.btn{appearance:none;background:var(--brand);color:var(--brand-ink);font:inherit;cursor:pointer;border:0;border-radius:10px;min-height:48px;padding:12px 20px;font-weight:700}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-sm{appearance:none;border:1px solid var(--line);background:var(--card);min-width:44px;min-height:44px;font:inherit;cursor:pointer;color:var(--ink);border-radius:8px}.btn-sm:disabled{opacity:.35}.files{gap:8px;margin:16px 0;padding:0;list-style:none;display:grid}.files li{background:var(--card);border:1px solid var(--line);border-radius:10px;align-items:center;gap:8px;padding:8px 8px 8px 12px;display:flex}.files .fname{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.files .fsize{color:var(--muted);font-size:.85rem}.files .thumb{object-fit:cover;background:var(--line);border-radius:6px;flex:none;width:48px;height:48px}.files li[draggable=true]{cursor:grab}.files li.dragging{opacity:.5}.files li.drop-target{border-color:var(--brand)}.inline{flex-wrap:wrap;gap:0 20px;display:flex}.row{flex-wrap:wrap;align-items:center;gap:12px;margin:16px 0;display:flex}fieldset{border:1px solid var(--line);border-radius:var(--r);background:var(--card);margin:16px 0;padding:12px 16px}legend{padding:0 4px;font-weight:700}label.opt{cursor:pointer;align-items:flex-start;gap:10px;padding:8px 0;display:flex}label.opt input{width:18px;height:18px;margin-top:4px}input[type=text]{font:inherit;border:1px solid #94a3b8;border-radius:8px;width:100%;min-height:44px;padding:10px 12px}.warn{background:var(--warn-bg);color:var(--warn-ink);border-radius:10px;padding:12px 14px;font-size:.95rem}.status{min-height:1.5em;margin:8px 0}.status.ok{color:var(--ok)}.status.err{color:var(--err)}.muted{color:var(--muted)}.tools{gap:12px;padding:0;list-style:none;display:grid}.tools a{color:var(--ink);text-decoration:none;display:block}.tools a:hover .card{border-color:var(--brand)}.tools h2{color:var(--brand);margin:0 0 4px}.tools p{color:var(--muted);margin:0}.faq details{border-bottom:1px solid var(--line);padding:12px 0}.faq summary{cursor:pointer;font-weight:600}.faq p{color:var(--muted);margin:8px 0 0}.foot{border-top:1px solid var(--line);color:var(--muted);margin-top:24px;padding:24px 0;font-size:.9rem}.foot-links{gap:16px;display:flex}.foot-links a{padding:10px 0;display:inline-block}.prose h2{margin-top:24px}.prose li{margin:6px 0}@media (width>=768px){.ad-slot{--ad-h:90px}}@media (width>=640px){h1{font-size:2.1rem}.tools{grid-template-columns:repeat(2,1fr)}}