:root{color:#193a55;font-synthesis:none;background:#eaf6ff;font-family:IBM Plex Sans,Noto Sans SC,sans-serif}*{box-sizing:border-box}body{background:linear-gradient(130deg,#f4fbff 0%,#e3f4ff 48%,#cde9fa 100%);min-width:320px;min-height:100vh;margin:0}button{font:inherit}.app-shell{width:min(1440px,100%);min-height:100vh;margin:0 auto;padding:24px clamp(20px,5vw,76px) 48px}.topbar{border-bottom:1px solid #256a972e;justify-content:space-between;align-items:center;height:64px;display:flex}.brand{color:#173d5a;letter-spacing:1.6px;align-items:center;gap:11px;font-family:Georgia,Noto Serif SC,serif;font-size:16px;font-weight:700;text-decoration:none;display:inline-flex}.brand-mark{align-items:end;gap:3px;height:19px;display:flex}.brand-mark i{background:#328bd0;width:4px;display:block}.brand-mark i:first-child{height:8px}.brand-mark i:nth-child(2){height:14px}.brand-mark i:nth-child(3){height:19px}.live-state{color:#6a8295;letter-spacing:1px;align-items:center;gap:8px;font-size:11px;font-weight:700;display:flex}.live-state span{background:#9bb2c2;border-radius:50%;width:7px;height:7px}.live-state.online{color:#2478b4}.live-state.online span{background:#e85f63;box-shadow:0 0 0 4px #e85f6321}.viewer-layout{grid-template-columns:minmax(0,1fr) 290px;align-items:start;gap:42px;padding-top:clamp(38px,8vh,90px);display:grid}.player-shell{aspect-ratio:16/9;background:#071012;position:relative;overflow:hidden;box-shadow:0 22px 55px #00000047}.player-shell:fullscreen{width:100%;height:100%}.player-shell video{object-fit:contain;background:#05090a;width:100%;height:100%;display:block}.player-overlay{z-index:1;pointer-events:none;justify-content:space-between;align-items:center;display:flex;position:absolute;inset:18px 18px auto}.channel-label,.protocol-chip{color:#ecf8ff;background:#081f30c7;padding:6px 9px;font-size:12px}.channel-label{align-items:center;gap:7px;display:flex}.red-dot{background:#f0645c;border-radius:50%;width:6px;height:6px}.protocol-chip{color:#b8d8eb}.offline-overlay{color:#eaf7ff;background:radial-gradient(circle,#297bb86b,#05111bd6);place-content:center;justify-items:center;gap:9px;display:grid;position:absolute;inset:0}.offline-overlay strong{font-size:18px;font-weight:500}.offline-overlay small{color:#b6d1e2;font-size:13px}.signal-icon{color:#75c7f1;letter-spacing:-5px;font-family:monospace;font-size:22px;transform:rotate(-17deg)}.transport-bar{border-bottom:1px solid #256a972e;justify-content:space-between;align-items:center;min-height:52px;display:flex}.transport-bar p{color:#54748a;align-items:center;gap:8px;margin:0;font-size:13px;display:flex}.status-pulse{background:#93abbc;border-radius:50%;width:7px;height:7px}.status-pulse.active{background:#378ed0;box-shadow:0 0 0 4px #378ed024}.icon-actions{gap:4px;display:flex}.icon-actions button{color:#5c7b90;cursor:pointer;background:0 0;border:0;place-items:center;width:34px;height:34px;display:grid}.icon-actions button:hover{color:#173d5a;background:#2e86c21f}.control-panel{border-left:1px solid #256a972e;flex-direction:column;gap:29px;min-height:430px;padding:3px 0 0 25px;display:flex}.eyebrow{color:#2785c2;letter-spacing:1.2px;margin:0 0 8px;font-size:11px;font-weight:700}.control-panel h1{color:#183e5c;letter-spacing:0;margin:0;font-family:Georgia,Noto Serif SC,serif;font-size:29px;font-weight:400}.panel-copy{color:#5e7c91;margin:13px 0 0;font-size:13px;line-height:1.75}.mode-switch{background:#4b9bd11a;grid-template-columns:1fr 1fr;gap:6px;padding:5px;display:grid}.mode-switch button{color:#5f7c8f;cursor:pointer;text-align:left;background:0 0;border:1px solid #0000;min-height:63px;padding:8px}.mode-switch button.selected{color:#173d5a;background:#d9effc;border-color:#2e8ecd80}.mode-switch strong,.mode-switch small{display:block}.mode-switch strong{font-size:14px;font-weight:500}.mode-switch small{opacity:.73;margin-top:4px;font-size:11px}.mode-notes{border-top:1px solid #256a972e;border-bottom:1px solid #256a972e;grid-template-columns:1fr 1fr;margin:0;padding:19px 0;display:grid}.mode-notes div+div{border-left:1px solid #256a972e;padding-left:18px}.mode-notes dt{color:#214d6d;font-size:14px}.mode-notes dd{color:#6b8798;margin:6px 0 0;font-size:11px}.reconnect-button{color:#1e618e;cursor:pointer;background:0 0;border:1px solid #5aa4d4;justify-content:center;align-items:center;gap:8px;min-height:42px;display:inline-flex}.reconnect-button:hover{background:#d9effc}.reconnect-button:disabled{opacity:.6;cursor:wait}.spinning{animation:.6s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (width<=800px){.app-shell{padding:16px 20px 32px}.viewer-layout{grid-template-columns:1fr;gap:32px;padding-top:42px}.control-panel{border-left:0;min-height:0;padding:0}.player-overlay{inset:12px}.mode-switch{max-width:360px}.reconnect-button{width:100%;max-width:360px}}