:root{--ink:#10202b;--muted:#6d7a82;--line:#dde4e5;--paper:#f4f1ea;--card:#fff;--teal:#0c796f;--orange:#ef7b45;--navy:#13242e}*{box-sizing:border-box}#app,body,html{min-height:100%;margin:0}body{font-family:Microsoft YaHei,PingFang SC,Arial,sans-serif;color:var(--ink);background:var(--paper)}button,input{font-family:inherit}.app-shell{min-height:100vh;background:radial-gradient(circle at 76% 4%,rgba(12,121,111,.12),transparent 25%),linear-gradient(180deg,#f8f6f0,#efede6)}.topbar{height:88px;padding:0 clamp(24px,4vw,64px);justify-content:space-between;border-bottom:1px solid rgba(16,32,43,.12);background:rgba(250,249,245,.82);backdrop-filter:blur(14px);position:sticky;top:0;z-index:10}.brand,.topbar{display:flex;align-items:center}.brand{gap:15px}.brand-mark{width:43px;height:43px;border-radius:50%;background:var(--navy);display:grid;place-items:center;box-shadow:0 7px 18px rgba(19,36,46,.2)}.brand-mark span{width:17px;height:17px;border:4px solid #fff;border-radius:50%;position:relative}.brand-mark span:after{content:"";position:absolute;width:5px;height:5px;background:var(--orange);border-radius:50%;right:-9px;top:-6px}.eyebrow,.section-kicker{font-size:10px;letter-spacing:.2em;font-weight:800;color:var(--teal);margin:0 0 4px}.brand h1{font-size:18px;margin:0;letter-spacing:.02em}.header-actions{display:flex;align-items:center;gap:12px}.connection-pill{height:36px;padding:0 14px;border:1px solid var(--line);border-radius:20px;display:flex;align-items:center;gap:8px;font-size:12px;font-weight:700;background:#fff}.connection-pill i,.live-badge i{width:7px;height:7px;border-radius:50%;background:#9aa5aa}.connection-pill.online i,.live-badge.active i{background:#2caf83;box-shadow:0 0 0 4px rgba(44,175,131,.14)}.connection-pill.connecting i{background:#e8a635;animation:pulse 1.2s infinite}.connection-pill.offline i{background:#d85757}.settings-button{border-color:var(--ink)!important;color:var(--ink)!important;background:transparent!important}main{max-width:1500px;margin:auto;padding:42px clamp(24px,4vw,64px) 64px}.overview{display:flex;justify-content:space-between;align-items:end;margin-bottom:28px}.overview h2{font-family:Georgia,Songti SC,serif;font-size:clamp(27px,3vw,42px);font-weight:500;margin:5px 0 8px}.overview-copy{margin:0;color:var(--muted);font-size:13px}.clock{text-align:right}.clock strong{display:block;font:500 30px/1 Georgia,serif;letter-spacing:.04em}.clock span{display:block;margin-top:8px;color:var(--muted);font-size:12px}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:22px}.panel{background:hsla(0,0%,100%,.92);border:1px solid rgba(16,32,43,.1);box-shadow:0 18px 50px rgba(29,46,53,.08)}.camera-panel{padding:22px}.panel-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.panel-heading.compact{margin-bottom:12px}.panel-label{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--teal);font-weight:800}.panel-heading h3{font:500 21px/1.2 Georgia,Songti SC,serif;margin:5px 0 0}.live-badge{font:800 10px/1 Arial;letter-spacing:.12em;padding:8px 10px;border:1px solid var(--line);display:flex;gap:7px;align-items:center}.video-stage{aspect-ratio:16/9;min-height:360px;background:#0b151b;position:relative;overflow:hidden;display:grid;place-items:center}.video-stage img{width:100%;height:100%;-o-object-fit:contain;object-fit:contain;position:absolute;inset:0;z-index:1}.video-placeholder{text-align:center;color:#eef5f4;position:relative;z-index:0}.video-placeholder h4{font:500 21px Georgia,serif;margin:17px 0 7px}.video-placeholder 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