:root{--bg: #ececec;--ink: #1c1c1f;--muted: #6d6a66;--line: #e6e2dc;--card: #ffffff;--purple: #6f4bff;--purple-dark: #5a38e6;--shadow: 0 10px 30px rgba(28, 28, 31, .08);font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:var(--ink)}*{box-sizing:border-box}html,body{margin:0;height:100%;background:#f3f3f3}button,input{font:inherit}.app{height:100%;display:flex;flex-direction:column}.topbar{height:58px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;background:#fff;border-bottom:1px solid #eee}.top-actions{display:flex;align-items:center;gap:10px}.user-name{color:var(--muted);font-size:13px}.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.02em}.logo{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;color:#fff;background:var(--purple)}.workspace{flex:1;min-height:0;display:grid;grid-template-columns:72px 280px minmax(380px,.95fr) minmax(420px,1.15fr);grid-template-areas:"nav side editor 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18px;color:var(--muted);font-size:13px}.share-switch{display:flex;align-items:center;justify-content:flex-start;gap:10px;margin:14px 0;font-size:14px;color:var(--ink);cursor:pointer}.share-switch input{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:40px;height:22px;flex:none;border-radius:999px;background:#d9d9d9;position:relative;cursor:pointer;transition:background .2s ease}.share-switch input:after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0000002e;transition:left .2s ease}.share-switch input:checked{background:var(--purple)}.share-switch input:checked:after{left:21px}.info-dot{display:inline-flex;align-items:center;justify-content:center;width:15px;height:15px;margin-left:2px;border-radius:50%;background:#f5b400;color:#fff;font-size:10px;font-style:normal;vertical-align:middle;cursor:help}.share-link{width:100%;height:38px;margin-top:14px;padding:0 10px;border:1px solid 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var(--line);font-size:11px}.export-video-note{position:absolute;left:16px;right:16px;bottom:16px;background:#ffffffe6;border-radius:10px;padding:8px 10px;font-size:12px}@media(max-width:800px){.export-body{grid-template-columns:1fr}.export-stage{min-height:180px}}@media(max-width:1100px){html,body,.app{height:auto;min-height:100%}.workspace{flex:none;grid-template-columns:64px 1fr;grid-template-rows:auto auto minmax(360px,70vh);grid-template-areas:"nav side" "nav editor" "nav stage"}body[data-page=mockup] .workspace{grid-template-columns:64px 1fr;grid-template-rows:auto minmax(420px,78vh);grid-template-areas:"nav side" "nav stage"}.panel{overflow:visible;max-height:none}.rail{position:sticky;top:0;align-self:start;min-height:100vh}.fold input[type=range]{width:90px}.editor-bar{flex-wrap:wrap}}