:root{--bg: #fafafa;--surface: #ffffff;--border: #dbdbdb;--text: #262626;--text-muted: #8e8e8e;--placeholder: #c7c7c7;--accent: #262626;--danger: #ed4956;--radius-sm: 4px;--radius-md: 8px;--header-h: 44px;--post-max: 470px;--skeleton-base: #efefef;--skeleton-shine: #f8f8f8}@media (prefers-color-scheme: dark){:root{--bg: #000000;--surface: #000000;--border: #262626;--text: #f5f5f5;--text-muted: #a8a8a8;--placeholder: #3a3a3a;--accent: #f5f5f5;--skeleton-base: #1a1a1a;--skeleton-shine: #2a2a2a}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased}.app-shell{display:flex;flex-direction:column;min-height:100dvh}.app-header{position:sticky;top:0;z-index:20;height:var(--header-h);background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 16px}.app-header-logo{font-size:1.5rem;font-weight:700;font-style:italic;letter-spacing:-.5px;color:var(--text);font-family:Georgia,serif;line-height:1}.app-header-actions{display:flex;align-items:center;gap:8px}.app-header-back{display:flex;align-items:center;gap:4px;background:none;border:none;color:var(--text);font-size:.9375rem;cursor:pointer;padding:4px 0}.app-header-title{font-size:.9375rem;font-weight:600;color:var(--text)}.icon-btn{background:none;border:none;cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:center;padding:4px;border-radius:var(--radius-sm);transition:opacity .15s}.icon-btn:hover{opacity:.6}.icon-btn:disabled{opacity:.3;cursor:not-allowed}.feed{display:flex;flex-direction:column;align-items:center;padding-bottom:40px}.post{width:100%;max-width:var(--post-max);background:var(--surface);cursor:pointer}@media (min-width: 600px){.post{border:1px 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