:root{color-scheme:dark;--ink:#dff8f4;--muted:#8eafb0;--deep:#07151b;--panel:#0c2229;--line:#27505a;--teal:#65e6d1;--blue:#73b9ff;--warn:#ffd38a}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 80% 0%,rgba(75,160,202,.18),transparent 28rem),linear-gradient(140deg,#061116,#0b2028 55%,#07141a);color:var(--ink);font:14px/1.45 "Trebuchet MS",Verdana,sans-serif}.airbits-shell{max-width:980px;margin:auto;padding:26px 26px 48px}.airbits-hero{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;padding:8px 0 24px;border-bottom:1px solid var(--line)}h1,h2,p{margin-top:0}h1{margin:0 0 7px;color:#fff;font:700 clamp(2.5rem,8vw,5rem)/.9 Georgia,serif;letter-spacing:-.06em}h2{display:inline;margin:0;color:#fff;font:700 1.15rem Georgia,serif}.eyebrow,.section-note,.section-index{color:var(--teal);font-size:.68rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase}.eyebrow{margin-bottom:10px}.subtitle,.hint,.file-meta{color:var(--muted)}.subtitle{max-width:640px}.status-pill{border:1px solid #367a7b;background:#0b2e32;color:var(--teal);padding:7px 12px;border-radius:2px;font-size:.75rem;white-space:nowrap;letter-spacing:.08em;text-transform:uppercase}.panel{margin-top:18px;padding:20px;background:linear-gradient(160deg,rgba(16,46,55,.95),rgba(7,25,32,.98));border:1px solid var(--line);border-radius:4px;box-shadow:0 10px 32px #02090d}.compact{padding-bottom:16px}.section-heading{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:15px}.section-heading>div{display:flex;align-items:baseline;gap:9px}.tabs,.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.tabs{margin:0 0 14px}button,.button-link{border:1px solid #3c6570;background:#102f38;color:var(--ink);border-radius:2px;padding:9px 13px;font:700 13px inherit;cursor:pointer;text-decoration:none;display:inline-block}button.primary,.button-link{background:linear-gradient(#188d8d,#0c5d6d);border-color:var(--teal);color:#fff}button:disabled{opacity:.4;cursor:not-allowed}.tab.active{background:#183d49;color:var(--teal);border-color:var(--teal)}label{display:block;color:var(--muted);font-size:.8rem;font-weight:700;margin-bottom:7px}textarea,select,input[type=file]{width:100%;border:1px solid var(--line);background:#061116;color:var(--ink);border-radius:2px;padding:10px;font:inherit}textarea{resize:vertical}.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:15px}input[type=range]{width:100%;margin-top:11px}.tabpane{display:none}.tabpane.active{display:block}.progress-wrap{margin-top:16px}.progress-label{display:flex;justify-content:space-between;color:var(--muted);font-size:.8rem;margin-bottom:7px}progress{width:100%;height:10px;accent-color:var(--teal)}.visualizer{margin:15px 0;border:1px solid var(--line);background:#031015;border-radius:2px;overflow:hidden}canvas{display:block;width:100%;height:160px}.download-card{display:flex;justify-content:space-between;align-items:center;gap:12px;border:1px solid #3a6b6e;padding:12px;margin-top:14px;background:#092127}.hidden{display:none}.protocol{display:grid;grid-template-columns:max-content 1fr;gap:7px 15px;margin-bottom:14px}.protocol code{color:var(--warn)}.protocol span{color:var(--muted)}pre{max-height:200px;overflow:auto;white-space:pre-wrap;word-break:break-word;background:#041014;border:1px solid var(--line);padding:10px;color:#a7d2d0}summary{cursor:pointer;color:var(--teal)}@media(max-width:620px){.airbits-shell{padding:18px 14px 34px}.airbits-hero{display:block}.status-pill{display:inline-block;margin-top:14px}.panel{padding:16px}.grid{grid-template-columns:1fr}.actions button,.actions .button-link{flex:1 1 auto;min-height:42px}.download-card{align-items:flex-start;flex-direction:column}.section-note{font-size:.58rem}}
#siteSearch{width:100%;margin-bottom:8px;border:1px solid var(--line);background:#061116;color:var(--ink);border-radius:2px;padding:10px;font:inherit}
#siteFileSelect{height:178px;overflow:auto}
#siteFileSelect option{padding:4px 6px}
@media(max-width:620px){#siteFileSelect{height:150px}}