:root{color-scheme:dark;--bg: #12141a;--panel: #1b1e26;--border: #2b303c;--text: #e6e8ee;--muted: #9aa2b1;--accent: #4c8dff;--ok: #2f8f5b;--warn: #a8761f;--error: #c0453f}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.fullscreen-center{min-height:100vh;display:flex;align-items:center;justify-content:center}.layout{display:flex;min-height:100vh}.sidebar{width:220px;flex-shrink:0;padding:24px 16px;border-right:1px solid var(--border);background:var(--panel)}.sidebar-title{font-size:16px;margin:0 0 24px}.sidebar-list{list-style:none;margin:0;padding:0}.sidebar-item{width:100%;text-align:left;padding:8px 12px;border:0;border-radius:6px;background:transparent;color:var(--muted);cursor:pointer;font-size:14px}.sidebar-item.active{background:var(--accent);color:#fff}.content{flex:1;padding:32px;max-width:900px}.section-header{display:flex;align-items:center;justify-content:space-between}.section-header h2{margin:0;font-size:20px}.section-intro{color:var(--muted);font-size:14px;line-height:1.5}.tunnel-form{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap;margin:24px 0}.field{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}input{padding:8px 10px;border-radius:6px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:14px}button{padding:8px 14px;border-radius:6px;border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;font-size:14px}button:disabled{opacity:.5;cursor:default}.tunnel-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.tunnel-item{display:flex;align-items:center;gap:16px;padding:14px 16px;border:1px solid var(--border);border-radius:8px;background:var(--panel)}.tunnel-main{flex:1;display:flex;flex-direction:column;gap:4px}.tunnel-main a{color:var(--accent);text-decoration:none;font-size:15px}.tunnel-port{color:var(--muted);font-size:12px}.tunnel-state{display:flex;flex-direction:column;gap:4px;align-items:flex-end;max-width:320px}.badge{font-size:12px;padding:2px 8px;border-radius:999px}.badge.ok{background:var(--ok);color:#fff}.badge.warn{background:var(--warn);color:#fff}.hint{color:var(--muted);font-size:11px;text-align:right}.message{color:var(--muted);font-size:14px}.error{color:var(--error);font-size:14px}