:root{color-scheme:light;font-family:Noto Sans SC,Source Han Sans SC,PingFang SC,Microsoft YaHei,sans-serif;--workspace-stage-min-height: clamp(720px, calc(100vh - 210px) , 860px);background:radial-gradient(circle at top,rgba(179,114,59,.16),transparent 30%),linear-gradient(180deg,#f1ece3,#fbfaf7 42%,#f4efe7);color:#1c1917}*{box-sizing:border-box}body{margin:0;background:transparent}a{color:#7c4f2d;text-decoration:none}.app-shell{min-height:100vh;padding:24px}.app-header{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;margin-bottom:24px;padding:18px 22px;border-radius:28px;background:#fffcf7b8;border:1px solid rgba(120,87,58,.12);box-shadow:0 20px 45px #2d211714;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.app-header h1{margin:0 0 8px}.app-header p{margin:0;color:#6b7280}.nav-actions{display:flex;gap:16px;padding-top:8px;flex-wrap:wrap}.app-main{max-width:1200px;margin:0 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scale(var(--tab-visual-scale, 1));transform-origin:top center;transition:height .42s cubic-bezier(.22,1,.36,1),max-height .42s cubic-bezier(.22,1,.36,1),padding .42s cubic-bezier(.22,1,.36,1),opacity .26s ease,transform .42s cubic-bezier(.22,1,.36,1)}.workspace-tab__visual--upload{background:linear-gradient(135deg,#fff8ecf0,#f4e9d8fa),linear-gradient(180deg,#fff,#fbfaf7)}.workspace-tab__visual--write{background:linear-gradient(135deg,#fffbf5f0,#f1e8dcfa),linear-gradient(180deg,#fff,#fbfaf7)}.workspace-tab__preview{position:absolute;inset:auto 20px 20px 20px;padding:18px;border-radius:18px;background:#ffffffe6;box-shadow:0 18px 30px #43301d14}.workspace-tab__preview-line{height:10px;width:58%;border-radius:999px;background:#bf905c4d;margin-bottom:10px}.workspace-tab__preview-line--long{width:76%;background:#9a5e2452}.workspace-tab__preview-blocks{display:flex;gap:8px;margin-top:16px}.workspace-tab__preview-blocks 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