:root{--bg: #f5f7f9;--surface: #ffffff;--border: #e2e8ec;--text: #0f1419;--muted: #667380;--accent: #1d9bf0;--accent-hover: #1a8cd8;--danger: #d92d43;--danger-hover: #c0263a;--radius: 14px;--shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04)}@media(prefers-color-scheme:dark){:root{--bg: #0f1419;--surface: #16202a;--border: #26323d;--text: #e7e9ea;--muted: #8b98a5;--shadow: none}}*{box-sizing:border-box}html,body,#app{margin:0;min-height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}.center{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:64px 16px;text-align:center}.muted{color:var(--muted)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.btn{appearance:none;border:1px solid transparent;border-radius:999px;padding:8px 18px;font-size:14px;font-weight:700;cursor:pointer;transition:background .15s,border-color .15s,opacity .15s;color:var(--text);background:transparent}.btn:disabled{opacity:.5;cursor:default}.btn-primary{background:var(--accent);color:#fff}.btn-primary:not(:disabled):hover{background:var(--accent-hover)}.btn-danger{background:transparent;color:var(--danger);border-color:var(--danger)}.btn-danger:not(:disabled):hover{background:#d92d431a}.btn-ghost{border-color:var(--border);color:var(--text)}.btn-ghost:not(:disabled):hover{background:var(--bg)}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:100%;max-width:360px;padding:32px 28px;display:flex;flex-direction:column;gap:16px}.login-title{margin:0;font-size:22px;font-weight:800}.login-sub{margin:-8px 0 8px;color:var(--muted);font-size:14px}.field{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted);font-weight:600}.field input{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:10px;padding:11px 12px;font-size:15px;outline:none}.field input:focus{border-color:var(--accent)}.error{margin:0;color:var(--danger);font-size:13px;font-weight:600}.shell{min-height:100vh}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:12px;padding:12px 20px;background:color-mix(in srgb,var(--surface) 88%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.brand{font-weight:800;font-size:17px}.spacer{flex:1}.pill{background:var(--accent);color:#fff;border-radius:999px;padding:3px 12px;font-size:13px;font-weight:700}.topbar .user{font-size:14px}.content{max-width:640px;margin:0 auto;padding:20px 16px 64px;display:flex;flex-direction:column;gap:14px}.empty-emoji{font-size:32px;color:var(--accent)}.item{padding:16px}.item-head{display:flex;align-items:center;gap:10px}.avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;background:var(--bg);flex-shrink:0}.who{min-width:0}.name{font-weight:700;font-size:15px}.handle{color:var(--muted);font-weight:400;margin-left:4px}.meta{color:var(--muted);font-size:13px;display:flex;align-items:center;gap:8px}.tag{background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:0 6px;font-size:12px}.text{margin:12px 0 0;white-space:pre-wrap;word-break:break-word;font-size:15px}.media{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}.media-thumb{display:block;width:110px;height:110px;border-radius:10px;overflow:hidden;border:1px solid var(--border)}.media-thumb img{width:100%;height:100%;object-fit:cover}.actions{margin-top:14px;display:flex;gap:10px}.more{align-self:center;margin-top:6px}