:root{color:#172033;background:#f4f6f8;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0}button{border:0;font:inherit}.preview-page{display:flex;width:100%;height:100%;min-height:100vh;min-height:100dvh;flex-direction:column;overflow:hidden;background:#f4f6f8}.topbar{display:grid;min-height:calc(52px + env(safe-area-inset-top));padding:calc(8px + env(safe-area-inset-top)) 12px 8px;align-items:center;gap:10px;grid-template-columns:36px minmax(0,1fr) 64px;border-bottom:1px solid #e2e7ee;background:#fffffff5}.icon-button,.text-button{height:36px;border-radius:8px;background:#eef2f6;color:#172033}.icon-button{display:grid;width:36px;place-items:center;font-size:30px;line-height:1}.text-button{padding:0 12px;font-size:14px;font-weight:600}.text-button:disabled{color:#98a2b3}.link-meta{min-width:0}.link-meta strong,.link-meta span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.link-meta strong{font-size:16px;line-height:20px}.link-meta span{margin-top:2px;color:#667085;font-size:12px;line-height:16px}.frame-wrap{position:relative;display:flex;min-height:0;flex:1;flex-direction:column}.preview-frame{width:100%;min-height:0;flex:1;border:0;background:#fff}.loading-bar{position:absolute;z-index:2;top:0;left:0;width:100%;height:2px;overflow:hidden;background:#d7e3f7}.loading-bar:after{display:block;width:42%;height:100%;animation:loading-slide 1.1s ease-in-out infinite;background:#246bfe;content:""}.fallback{display:flex;min-height:calc(44px + env(safe-area-inset-bottom));padding:8px 12px calc(8px + env(safe-area-inset-bottom));align-items:center;justify-content:space-between;gap:12px;border-top:1px solid #e2e7ee;background:#fff;color:#667085;font-size:12px;line-height:18px}.fallback-warning{background:#fff8ed;color:#8a4b08}.fallback span{min-width:0}.fallback-actions{display:flex;flex:0 0 auto;gap:8px}.fallback-actions button{flex:0 0 auto;height:32px;padding:0 12px;border-radius:8px;background:#246bfe;color:#fff;font-size:13px;font-weight:600}.fallback-actions .secondary-action{background:#eef2f6;color:#172033}.empty-state{display:grid;min-height:0;flex:1;padding:24px 16px;place-items:center}.empty-panel{width:min(100%,520px);padding:22px;border:1px solid #e2e7ee;border-radius:8px;background:#fff}.empty-panel h1{margin:0;font-size:20px;line-height:28px}.empty-panel p{margin:10px 0 16px;color:#667085;font-size:14px;line-height:22px}.empty-panel code{display:block;overflow-wrap:anywhere;border-radius:8px;padding:10px;background:#f4f6f8;color:#344054;font-size:12px;line-height:18px}@keyframes loading-slide{0%{transform:translate(-100%)}to{transform:translate(240%)}}