@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap";
:root{--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:"JetBrains Mono", monospace;--bg-main:#f4f6f8;--bg-card:#fff;--bg-input:#fff;--bg-hover:#f8fafc;--bg-active:#eef2f6;--border-color:#e2e8f0;--border-light:#cbd5e1;--border-focus:#2563eb;--accent-primary:#ff4500;--accent-primary-hover:#e03d00;--accent-blue:#2563eb;--accent-success:#10b981;--accent-danger:#ef4444;--accent-warning:#f59e0b;--text-main:#1c1c1c;--text-muted:#576f76;--text-subtle:#7c7c7c;--radius:4px;--radius-sm:3px;--shadow-card:0 1px 3px 0 #0000000a, 0 1px 2px 0 #00000005;--shadow-hover:0 4px 6px -1px #0000000f, 0 2px 4px -1px #00000008}[data-theme=dark]{--bg-main:#0e1117;--bg-card:#161b22;--bg-input:#0d1117;--bg-hover:#21262d;--bg-active:#30363d;--border-color:#30363d;--border-light:#363b42;--border-focus:#58a6ff;--accent-primary:#ff5722;--accent-primary-hover:#e64a19;--accent-blue:#58a6ff;--accent-success:#2ea043;--accent-danger:#f85149;--accent-warning:#d29922;--text-main:#f0f6fc;--text-muted:#8b949e;--text-subtle:#6e7681;--shadow-card:0 1px 3px 0 #0006;--shadow-hover:0 4px 6px -1px #00000080}*{box-sizing:border-box;margin:0;padding:0}html,body{background-color:var(--bg-main);color:var(--text-main);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;min-height:100vh;font-size:14px;line-height:1.5}a{color:inherit;text-decoration:none}button{cursor:pointer;border-radius:var(--radius);border:1px solid #0000;outline:none;font-family:inherit;transition:all .15s}input,textarea,select{color:var(--text-main);background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius);outline:none;padding:8px 12px;font-family:inherit;font-size:13px;transition:border-color .15s,box-shadow .15s}input:focus,textarea:focus,select:focus{border-color:var(--accent-blue);box-shadow:0 0 0 3px #2563eb1a}.box{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow-card);transition:border-color .15s,box-shadow .15s}.box-interactive:hover{border-color:var(--border-light);box-shadow:var(--shadow-hover)}.btn{border-radius:var(--radius);border:1px solid var(--border-color);background:var(--bg-card);color:var(--text-main);justify-content:center;align-items:center;gap:6px;padding:7px 14px;font-size:13px;font-weight:600;display:inline-flex}.btn:hover{background:var(--bg-hover);border-color:var(--border-light)}.btn-primary{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.btn-primary:hover{background:var(--accent-primary-hover);border-color:var(--accent-primary-hover)}.btn-secondary{color:#1e293b;background:#f1f5f9;border-color:#e2e8f0}.btn-secondary:hover{background:#e2e8f0}.btn-social{border:1px solid var(--border-color);background:var(--bg-card);width:100%;color:var(--text-main);border-radius:var(--radius);box-shadow:var(--shadow-card);justify-content:center;align-items:center;gap:10px;padding:9px 16px;font-size:13px;font-weight:600;display:flex}.btn-social:hover{background:var(--bg-hover);border-color:var(--border-light)}.vote-box{justifyContent:center;border-right:1px solid var(--border-color);background:#f8fafc;flex-direction:column;flex-shrink:0;align-items:center;width:44px;padding:8px 0;display:flex}[data-theme=dark] .vote-box{background:#11151f}.vote-btn{color:var(--text-subtle);background:0 0;border:none;justify-content:center;align-items:center;padding:4px;display:flex}.vote-btn:hover{color:var(--accent-primary);background:#ff45001a}.vote-btn.active-up{color:var(--accent-primary)}.vote-btn.active-down{color:#7193ff}.badge{border-radius:var(--radius);border:1px solid var(--border-color);color:var(--text-muted);background:#f8fafc;align-items:center;gap:4px;padding:2px 7px;font-size:11px;font-weight:600;display:inline-flex}.badge-solved{color:#065f46;background:#ecfdf5;border-color:#a7f3d0}.badge-pinned{color:#92400e;background:#fffbeb;border-color:#fde68a}.badge-locked{color:#991b1b;background:#fef2f2;border-color:#fecaca}.badge-tag{color:#475569;background:#f1f5f9;border-color:#e2e8f0}.badge-tag:hover{color:#1e293b;background:#e2e8f0}.forum-container{grid-template-columns:290px minmax(0,1fr) 330px;gap:20px;max-width:1440px;margin:0 auto;padding:16px 20px;display:grid}@media (max-width:1200px){.forum-container{grid-template-columns:260px minmax(0,1fr)}.forum-right-sidebar{display:none}}@media (max-width:768px){.forum-container{grid-template-columns:1fr;gap:12px;padding:10px}.forum-left-sidebar{display:none}.forum-left-sidebar.mobile-open{background:var(--bg-main);z-index:99;padding:12px;display:block;position:fixed;inset:54px 0 0;overflow-y:auto}}pre code{font-family:var(--font-mono);color:#f8fafc;border:1px solid var(--border-color);border-radius:var(--radius);background:#0f172a;padding:14px 16px;font-size:12.5px;line-height:1.55;display:block;overflow-x:auto}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-main)}::-webkit-scrollbar-thumb{background:#cbd5e1}::-webkit-scrollbar-thumb:hover{background:#94a3b8}