:root{--bg-top:#0c0d10;--bg-bot:#15171c;--surface:#16181e;--surface-2:#1e212a;--ink:#f5f5f7;--muted:#9a9aa3;--faint:#6b6b74;--line:rgba(255,255,255,0.09);--line-strong:rgba(255,255,255,0.18);--accent:#e82127;--accent-2:#ff3b41;--glow:rgba(232,33,39,0.38);--radius:16px;--radius-sm:12px;--shadow-sm:0 1px 2px rgba(0,0,0,0.4);--shadow-md:0 16px 40px -16px rgba(0,0,0,0.8);--ease:cubic-bezier(0.2,0.7,0.2,1)}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:var(--ink);background:radial-gradient(1100px 520px at 50% -8%,rgba(232,33,39,.1),transparent 70%),linear-gradient(180deg,var(--bg-top),var(--bg-bot)) fixed;background-color:var(--bg-top);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;min-height:100vh;line-height:1.5}a{color:inherit;text-decoration:none}.container{width:100%;max-width:1120px;margin:0 auto;padding:0 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var(--line-strong);border-radius:999px;width:34px;height:34px;color:var(--ink);cursor:pointer;font-size:15px;line-height:1;display:inline-flex;align-items:center;justify-content:center;transition:border-color .2s,background .2s}.theme-toggle:hover{border-color:var(--accent)}[data-theme=light]{--bg-top:#fbfbfd;--bg-bot:#eef0f3;--surface:#ffffff;--surface-2:#f3f4f6;--ink:#1d1d1f;--muted:#6e6e73;--faint:#a1a1a6;--line:rgba(0,0,0,0.10);--line-strong:rgba(0,0,0,0.16);--shadow-sm:0 1px 2px rgba(0,0,0,0.06);--shadow-md:0 18px 44px -18px rgba(0,0,0,0.22)}[data-theme=light] body{background:radial-gradient(1100px 520px at 50% -8%,rgba(232,33,39,.06),transparent 70%),linear-gradient(180deg,#fbfbfd,#eef0f3) fixed;background-color:#fbfbfd}[data-theme=light] .site-header{background:rgba(255,255,255,.72)}[data-theme=light] .bottom-nav{background:rgba(255,255,255,.86)}[data-theme=light] .feed-thumb{background:#e8e8ed}[data-theme=light] 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