:root{--primary: #4f46e5;--primary-hover: #4338ca;--danger: #dc2626;--text: #1f2937;--muted: #6b7280;--bg: #f9fafb;--card: #ffffff;--border: #e5e7eb}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}.app{min-height:100vh}.navbar{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.navbar .brand{font-size:20px;font-weight:700;color:var(--primary);text-decoration:none}.navbar nav{display:flex;align-items:center;gap:12px}.nav-user{font-weight:500;margin-right:4px}.container{max-width:800px;margin:0 auto;padding:32px 24px}h1{font-size:28px;margin-bottom:24px}h2{font-size:22px;margin:16px 0}.btn{display:inline-block;padding:8px 16px;border:1px solid transparent;border-radius:8px;cursor:pointer;font-size:14px;text-decoration:none;transition:background .15s;background:transparent}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-ghost{color:var(--text);border-color:var(--border)}.btn-ghost:hover{background:var(--bg)}.btn-danger{background:var(--danger);color:#fff}.btn-block{width:100%}.btn-sm{padding:2px 8px;font-size:12px}.input,.textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;margin-bottom:12px;font-family:inherit}.textarea{resize:vertical}.input:focus,.textarea:focus{outline:none;border-color:var(--primary)}.post-list{display:flex;flex-direction:column;gap:16px}.post-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px}.post-card h2{margin:0 0 8px}.post-card h2 a{color:var(--text);text-decoration:none}.post-card h2 a:hover{color:var(--primary)}.excerpt{color:var(--muted);margin-bottom:12px}.meta{display:flex;gap:16px;color:var(--muted);font-size:14px;margin-bottom:16px}.actions{display:flex;gap:8px;margin-bottom:16px}.post-content{white-space:pre-wrap;font-size:16px;line-height:1.8;margin-bottom:24px}.comment-form{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}.comment-form textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;resize:vertical}.comment-form .btn{align-self:flex-end}.comment-list{display:flex;flex-direction:column;gap:12px}.comment{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:12px 16px}.comment-head{display:flex;align-items:center;gap:12px;margin-bottom:6px}.comment-head strong{color:var(--primary)}.comment-head .muted{font-size:12px;flex:1}.auth-card{max-width:400px;margin:48px auto;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:32px}.auth-card h1{text-align:center}.muted{color:var(--muted)}.muted a{color:var(--primary)}.error{color:var(--danger);margin-bottom:12px;font-size:14px}.editor{display:flex;flex-direction:column}.admin-tabs{display:flex;gap:8px;margin-bottom:24px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px;text-align:center}.stat-num{font-size:36px;font-weight:700;color:var(--primary)}.stat-label{color:var(--muted);margin-top:4px}.admin-table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--border);border-radius:8px;overflow:hidden}.admin-table th,.admin-table td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}.admin-table th{background:var(--bg);font-weight:600}.admin-table tr:last-child td{border-bottom:none}.badge{display:inline-block;padding:2px 10px;border-radius:12px;font-size:12px;background:#e0e7ff;color:var(--primary)}.badge-admin{background:#fef3c7;color:#b45309}