.protocol-shell{margin:18px 0 0}.protocol-hero{padding:32px;position:relative;background:linear-gradient(135deg,#fff,#eef6fb)}.protocol-hero h2{font:700 46px/1.04 Georgia,serif;letter-spacing:-.04em;margin:0}.protocol-hero>div>p:last-child{color:var(--muted);max-width:760px}.close-guide{position:absolute;right:22px;top:22px;border:1px solid var(--line);background:#fff;width:38px;height:38px;border-radius:50%;font-size:24px;cursor:pointer}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:26px}.quick-grid div{background:#fff;border:1px solid var(--line);border-radius:13px;padding:14px}.quick-grid span,.quick-grid strong{display:block}.quick-grid span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.quick-grid strong{font-size:18px;margin-top:3px}.protocol-nav{display:flex;gap:8px;overflow:auto;padding:12px 0;position:sticky;top:76px;background:var(--paper);z-index:10}.protocol-nav a{white-space:nowrap;text-decoration:none;color:#45566d;border:1px solid var(--line);background:#fff;padding:8px 12px;border-radius:999px;font-size:12px;font-weight:750}.protocol-layout{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:18px}.protocol-main{display:grid;gap:14px}.protocol-section{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px}.protocol-section h3{font:700 30px/1.1 Georgia,serif;margin:0 0 12px}.protocol-section>p{color:var(--muted)}.protocol-section ul{padding-left:20px;color:#46566b}.protocol-section li+li{margin-top:9px}.protocol-section.warning{background:#fff8e8;border-color:#f1d696}.protocol-aside{align-self:start;position:sticky;top:138px;background:var(--navy);border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:10px}.protocol-aside strong{color:var(--aqua);font-size:12px;text-transform:uppercase;letter-spacing:.1em}.protocol-aside a{color:#bac5d5;text-decoration:none;font-size:13px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;margin-top:16px}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);white-space:nowrap}th{font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:#6a788b}.demo-player{background:var(--navy);color:#fff;border-radius:18px;overflow:hidden;margin-top:20px}.demo-stage{height:310px;background:radial-gradient(circle at 70% 40%,#153356,#071020 60%);display:grid;place-items:center}.demo-stage svg{width:min(92%,620px);height:100%}.demo-stage path,.demo-stage rect{fill:none;stroke:#9eb0c6;stroke-width:4}.demo-stage text{font:700 13px system-ui;fill:#6f829b;text-anchor:middle}.demo-stage .surface path{stroke:#34455e}.demo-stage .swab{opacity:0}.demo-stage .demo-liquid{fill:#2ad1bd;stroke:none}.demo-stage .drops{fill:#2ad1bd;opacity:0}.demo-copy{padding:22px 24px 8px}.demo-copy span{color:var(--aqua);font-size:12px;font-weight:850}.demo-copy h4{font-size:22px;margin:6px 0}.demo-copy p{color:#aebacd;margin:0}.demo-controls{display:flex;gap:8px;padding:18px 24px}.demo-controls button{border:1px solid #3b4a61;background:#142238;color:#fff;border-radius:9px;padding:9px 15px;cursor:pointer}.demo-controls button:nth-child(2){min-width:82px}.demo-progress{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;padding:0 24px 22px}.demo-progress i{height:3px;background:#344158}.demo-progress i.active{background:var(--aqua)}.demo-stage[data-step="1"] .swab{opacity:1}.demo-stage[data-step="2"] .syringe{transform:translate(115px,-10px);transition:.6s}.demo-stage[data-step="2"] .drops{opacity:1}.demo-stage[data-step="3"] .vial{transform-origin:378px 160px;animation:roll 1.8s ease-in-out infinite}.demo-stage[data-step="4"] .vial rect{stroke:var(--aqua)}@keyframes roll{0%,100%{transform:rotate(-4deg)}50%{transform:rotate(4deg)}}.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.check-grid div{background:#f5f8fa;border-radius:12px;padding:16px}.check-grid b,.check-grid span{display:block}.check-grid span{color:var(--muted);font-size:13px;margin-top:4px}.evidence-card{border-left:3px solid var(--blue);padding:3px 0 3px 16px;margin:16px 0}.evidence-card b{display:block}.evidence-card span{color:var(--muted);font-size:14px}.reference-item{display:grid;grid-template-columns:28px 1fr auto;gap:10px;padding:12px 0;border-bottom:1px solid var(--line);align-items:center}.reference-item a{color:var(--blue);font-weight:750;text-decoration:none}.related-list{display:flex;flex-wrap:wrap;gap:8px}.related-list button{border:1px solid var(--line);background:#f8fafb;border-radius:999px;padding:9px 13px;cursor:pointer}@media(max-width:900px){.protocol-layout{grid-template-columns:1fr}.protocol-aside{display:none}.quick-grid{grid-template-columns:1fr 1fr}.protocol-nav{top:66px}}@media(max-width:600px){.protocol-hero h2{font-size:34px}.protocol-section{padding:22px}.protocol-section h3{font-size:26px}.check-grid{grid-template-columns:1fr}.demo-stage{height:240px}}