:root{--bg:#0f1115;--panel:#171a21;--border:#262b36;--text:#e6e8ec;--muted:#8b93a3;--accent:#4f8cff;--danger:#ff6b6b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}.wrap{max-width:1100px;margin:0 auto;padding:32px 20px 64px}h1{font-size:20px;margin:0 0 4px}.sub{color:var(--muted);margin:0 0 28px;font-size:14px}.layout{display:grid;grid-gap:24px;gap:24px;grid-template-columns:minmax(0,380px) minmax(0,1fr)}@media (max-width:860px){.layout{grid-template-columns:1fr}}.panel{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:20px}label{display:block;font-size:13px;color:var(--muted);margin:0 0 6px}.field{margin-bottom:16px}.row{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px}input,textarea{width:100%;background:#0d0f14;border:1px solid var(--border);border-radius:7px;color:var(--text);padding:9px 11px;font:inherit;font-size:14px}textarea{resize:vertical;min-height:84px}input:focus,textarea:focus{outline:none;border-color:var(--accent)}button{width:100%;background:var(--accent);color:#fff;border:0;border-radius:7px;padding:11px;font:inherit;font-weight:600;cursor:pointer}button:disabled{opacity:.55;cursor:default}.hint{color:var(--muted);font-size:12px;margin:6px 0 0}.error{color:var(--danger);font-size:14px;margin:16px 0 0}.preview{position:relative;display:flex;align-items:center;justify-content:center;min-height:420px;border:1px dashed var(--border);border-radius:10px;color:var(--muted);font-size:14px;text-align:center;padding:20px}.preview img{max-width:100%;border-radius:8px;display:block}.preview.busy img{opacity:.25;filter:blur(2px)}.loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--text)}.spinner{width:38px;height:38px;border-radius:50%;border:3px solid var(--border);border-top-color:var(--accent);animation:spin .8s linear infinite}.loading-text{font-size:15px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.loading-sub{font-size:13px;color:var(--muted)}@keyframes spin{to{transform:rotate(1turn)}}@media (prefers-reduced-motion:reduce){.spinner{animation-duration:2.4s}}.bar{height:3px;border-radius:3px;background:var(--border);overflow:hidden;margin-bottom:16px}.bar span{display:block;height:100%;width:40%;background:var(--accent);animation:slide 1.1s ease-in-out infinite}@keyframes slide{0%{transform:translateX(-100%)}to{transform:translateX(350%)}}.meta{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:12px;font-size:13px;color:var(--muted)}.meta a{color:var(--accent);text-decoration:none}