:root{color-scheme:dark;--bg: #080b10;--panel: rgba(8, 11, 16, .72);--panel-strong: rgba(8, 11, 16, .88);--panel-border: rgba(255, 255, 255, .12);--text: #f6f2ea;--muted: rgba(246, 242, 234, .72);--accent: #dcc38d;--shadow: 0 18px 48px rgba(0, 0, 0, .28)}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0}body{overflow:hidden;background:radial-gradient(circle at top,rgba(220,195,141,.14),transparent 34%),radial-gradient(circle at 20% 85%,rgba(98,132,182,.08),transparent 26%),linear-gradient(180deg,#121720,#080b10);color:var(--text);font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}.viewer-shell{position:relative;width:100%;height:100%;overflow:hidden}#viewer-canvas{width:100%;height:100%;display:block;touch-action:none;opacity:.18;transform:scale(1.012);filter:saturate(.9) brightness(.82);transition:opacity .72s ease,transform 1.2s ease,filter 1.2s ease}.viewer-shell.is-ready #viewer-canvas{opacity:1;transform:scale(1);filter:saturate(1) brightness(1)}.viewer-loading{position:absolute;top:0;right:0;bottom:0;left:0;z-index:4;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(180deg,#06080cc7,#06080ce6);transition:opacity .42s ease,visibility .42s ease}.viewer-loading.is-hidden{opacity:0;visibility:hidden;pointer-events:none}.viewer-loading-card,.viewer-rotate-card{width:min(420px,calc(100vw - 48px));padding:24px 22px;border:1px solid var(--panel-border);border-radius:24px;background:#090d12db;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}#viewer-loading-title,.viewer-rotate-title{margin:12px 0 8px;font-size:clamp(28px,4vw,34px);line-height:1.12}#viewer-loading-text,.viewer-rotate-text{margin:0;color:var(--muted);font-size:14px;line-height:1.75}.viewer-rotate-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:8;display:none;align-items:center;justify-content:center;padding:24px;background:#05080ceb}.viewer-toolbar{position:absolute;top:max(18px,calc(env(safe-area-inset-top) + 10px));right:max(18px,calc(env(safe-area-inset-right) + 10px));z-index:5;display:flex;gap:10px}.viewer-toolbar-btn{min-width:104px;height:42px;padding:0 16px;border:1px solid rgba(255,255,255,.16);border-radius:999px;background:#080b10c7;color:var(--text);font-size:13px;font-weight:600;cursor:pointer;box-shadow:0 12px 24px #0003;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.viewer-toolbar-btn.secondary{background:#ffffff14}.mobile-hint{position:absolute;left:50%;bottom:max(14px,calc(env(safe-area-inset-bottom) + 10px));z-index:5;display:none;max-width:min(68vw,320px);padding:8px 12px;border:1px solid rgba(255,255,255,.12);border-radius:999px;background:#080b10bd;color:#f6f2eae0;font-size:12px;line-height:1.5;text-align:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transform:translate(-50%,12px);opacity:0;transition:opacity .22s ease,transform .22s ease;pointer-events:none}.mobile-hint.is-visible{opacity:1;transform:translate(-50%)}.mobile-joystick{position:absolute;left:max(14px,calc(env(safe-area-inset-left) + 10px));bottom:max(14px,calc(env(safe-area-inset-bottom) + 10px));z-index:5;display:none;width:132px;height:132px;touch-action:none}.mobile-joystick-base{position:absolute;top:0;right:0;bottom:0;left:0;border:1px solid rgba(255,255,255,.14);border-radius:50%;background:radial-gradient(circle at 35% 30%,#ffffff29,#ffffff0d 55%,#ffffff05);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 12px 24px #00000038}.mobile-joystick-knob{position:absolute;left:50%;top:50%;width:50px;height:50px;margin-left:-25px;margin-top:-25px;border-radius:50%;background:linear-gradient(180deg,#dcc38df5,#b1955ceb);box-shadow:0 10px 24px #0000003d;transform:translate(0)}.viewer-panel{position:absolute;z-index:2;border:1px solid var(--panel-border);background:var(--panel);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);color:var(--text);opacity:0;transform:translateY(10px);transition:opacity .42s ease,transform .42s ease}.viewer-shell.is-ready .viewer-panel{opacity:1;transform:translateY(0)}.top-panel{top:max(18px,calc(env(safe-area-inset-top) + 10px));left:max(18px,calc(env(safe-area-inset-left) + 10px));max-width:min(460px,calc(100vw - 180px));padding:16px 18px;border-radius:18px}.eyebrow{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent)}#viewer-title{margin:10px 0 6px;font-size:clamp(24px,3vw,34px);line-height:1.1}#viewer-scene-meta{margin:0;color:var(--muted);font-size:14px;line-height:1.7}.status-panel{top:max(72px,calc(env(safe-area-inset-top) + 64px));right:max(18px,calc(env(safe-area-inset-right) + 10px));width:min(320px,calc(100vw - 40px));padding:14px 16px;border-radius:18px}.status-line+.status-line{margin-top:12px}.status-label{display:block;margin-bottom:4px;color:var(--accent);font-size:12px;letter-spacing:.08em}.help-panel{left:max(18px,calc(env(safe-area-inset-left) + 10px));right:max(18px,calc(env(safe-area-inset-right) + 10px));bottom:max(18px,calc(env(safe-area-inset-bottom) + 10px));padding:14px 16px;border-radius:18px;font-size:14px;line-height:1.72;color:var(--muted)}.help-panel div+div{margin-top:6px}.viewer-shell.is-mobile-viewer .top-panel,.viewer-shell.is-mobile-viewer .status-panel,.viewer-shell.is-mobile-viewer .help-panel{display:none}.viewer-shell.is-mobile-viewer .viewer-toolbar{left:max(10px,calc(env(safe-area-inset-left) + 8px));right:auto;top:max(10px,calc(env(safe-area-inset-top) + 8px))}.viewer-shell.is-mobile-viewer #viewer-legacy-button{display:none}.viewer-shell.is-mobile-viewer .viewer-toolbar-btn{min-width:96px;height:40px;padding:0 14px;font-size:12px}.viewer-shell.is-mobile-viewer .mobile-hint,.viewer-shell.is-mobile-viewer .mobile-joystick{display:block}.viewer-shell.is-mobile-viewer.is-mobile-portrait .mobile-hint,.viewer-shell.is-mobile-viewer.is-mobile-portrait .mobile-joystick{display:none}.viewer-shell.is-mobile-viewer.is-mobile-portrait .viewer-rotate-overlay{display:flex}@media(max-width:960px){.viewer-loading-card,.viewer-rotate-card{width:calc(100vw - 32px);padding:22px 18px}}