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:root{font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:#eaf0f5;background:#101c2d;font-synthesis:none;-webkit-text-size-adjust:100%}*{box-sizing:border-box}body{margin:0;min-width:320px;background:radial-gradient(circle at 75% 3%,#20354c 0,transparent 34%),#101c2d}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.42}.shell{max-width:1440px;margin:auto;padding:0 clamp(20px,4vw,64px)}.topbar{height:82px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #344558}.brand{display:flex;align-items:center;gap:11px;font-size:15px;font-weight:700;letter-spacing:.04em}.brand-mark{display:grid;place-items:center;width:30px;height:30px;border:2px solid 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.22s}.control-section{padding-top:23px}.button{border-radius:4px;height:48px;font-size:13px;font-weight:650;transition:background .15s,border-color .15s}.button-primary{display:flex;align-items:center;justify-content:space-between;width:100%;padding:0 17px;margin-top:21px;border:1px solid #d6f596;background:#d6f596;color:#17253a}.button-primary:hover:not(:disabled){background:#e8ffb6}.button-primary span{font-size:21px;font-weight:400}.button-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}.button-secondary{background:#203149;color:#e7f0f5;border:1px solid #4b6176}.button-secondary:hover:not(:disabled){background:#2b4058}.sound-controls{display:flex;align-items:center;gap:17px;margin-top:24px}.mute-button{background:transparent;color:#e5eef2;border:1px solid #566b7d;border-radius:3px;padding:8px 11px;font-size:12px;min-width:54px}.mute-button[aria-pressed=true]{border-color:#d6f596;color:#d6f596}.volume-control{display:flex;align-items:center;gap:10px;min-width:0;flex:1;color:#9fb1bc;font-size:12px}.volume-control input{flex:1;min-width:30px;accent-color:#d6f596}.volume-control output{min-width:34px;text-align:right;color:#eaf0f5}.system-section{flex:1}.system-section p{color:#aebfcb;line-height:1.75;font-size:12px;margin:15px 0 0}.footer{display:flex;justify-content:space-between;gap:20px;color:#8298a9;line-height:1.7;padding:22px 0 35px;letter-spacing:.02em}.footer span:last-child{white-space:nowrap;color:#b5cf9b}@media(max-width:850px){.intro{align-items:start;flex-direction:column;padding:43px 0 33px;gap:21px}.intro-note{font-size:12px}.workspace{grid-template-columns:1fr}.viewer{border-right:0;border-bottom:1px solid #405166}.panel{display:grid;grid-template-columns:1fr 1fr}.status-section{border-right:1px solid #35475a}.system-section{grid-column:1/-1;border-top:1px solid #35475a}.footer{flex-direction:column;gap:7px}}@media(max-width:560px){.topbar{height:65px}.edition{display:none}.intro-copy{font-size:14px}.panel{display:block}.status-section{border-right:0}.panel-section{padding:24px 22px}.stage{aspect-ratio:3/4}.viewer-top,.viewer-bottom{padding:0 16px}.footer{font-size:11px}}
@media(max-width:850px) and (orientation:landscape){.workspace{grid-template-columns:minmax(0,1.35fr) minmax(280px,1fr)}.viewer{border-right:1px solid #405166;border-bottom:0}.panel{display:flex;flex-direction:column;overflow-y:auto}.status-section{border-right:0;border-bottom:1px solid #35475a}.system-section{grid-column:auto;border-top:0}}
@media(max-width:560px) and (orientation:portrait){.stage{aspect-ratio:3/4}.panel{display:flex;flex-direction:column}.control-section{order:-1;border-bottom:1px solid #35475a}.system-section{border-top:1px solid #35475a}.sound-controls{flex-wrap:wrap;gap:13px}.mute-button{width:100%}.volume-control{flex:1 1 100%;font-size:13px}.viewer-top,.viewer-bottom{height:42px;padding:0 15px}.panel-section{padding:22px 18px}.footer{padding-bottom:calc(30px + env(safe-area-inset-bottom))}}
@media(pointer:coarse){input[type=range]{min-height:32px}.button,.mute-button{min-height:44px}.button-primary:active:not(:disabled),.button-secondary:active:not(:disabled),.mute-button:active{background:#2b4058}.button-primary:active:not(:disabled){background:#bfe383}}