:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#192e31;background:#f4f7f7;font-size:15px;line-height:1.55;--accent:#12665f;--border:#d9e2e2;--muted:#53696c;--danger:#a02f2f;--success:#176648;--warning:#825015}
*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button:focus-visible,input:focus-visible{outline:3px solid #549d98;outline-offset:3px}svg{fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}[hidden]{display:none!important}
.topbar{height:76px;max-width:1100px;margin:auto;padding:0 34px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:18px}.brand svg{width:27px;height:27px;color:var(--accent)}.brand-sub{font-size:14px;color:var(--muted);font-weight:500;margin-left:8px}.locality{font-size:13px;color:var(--muted)}main{max-width:1100px;padding:42px 34px 24px;margin:auto}.page-heading{margin-bottom:30px}h1{font-size:30px;line-height:1.3;margin:0 0 10px;font-weight:650}.page-heading p{margin:0;color:var(--muted);max-width:65ch}h2{font-size:18px;line-height:1.4;margin:0 0 8px;font-weight:650}h3{font-size:16px;margin:0 0 8px}.secondary{color:var(--muted);font-size:14px;margin:0 0 24px}.workspace{display:grid;grid-template-columns:330px minmax(0,1fr);background:white;border:1px solid var(--border);border-radius:12px;overflow:hidden}.account-pane{padding:28px;background:#fafcfc;border-right:1px solid var(--border)}.node-pane{padding:28px 32px}label:not(.check-label){display:block;font-size:14px;font-weight:600;margin:20px 0 8px}input[type=email],input[type=password]{display:block;width:100%;height:46px;padding:10px 12px;border:1px solid #9cacae;border-radius:6px;color:#192e31;background:white}input::placeholder{color:#62777a;font-size:13px}.primary,.secondary-button{border:1px solid transparent;border-radius:6px;padding:10px 18px;font-size:14px;font-weight:600;min-height:43px;transition:background .15s}.primary{background:var(--accent);color:white}.primary:hover:enabled{background:#0b504a}.secondary-button{background:white;border-color:#acbcbc;color:#294448}.secondary-button:hover:enabled{background:#f1f6f5}.wide{width:100%;margin-top:24px}.privacy{font-size:12px;color:var(--muted);line-height:1.75;margin:16px 0 8px}.text-button{border:0;background:transparent;color:var(--accent);padding:5px 0;font-size:13px;font-weight:600}.text-button:hover:enabled{text-decoration:underline}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}.section-heading h2{margin:0}.badge{white-space:nowrap;font-size:12px;line-height:1.5;font-weight:600;padding:4px 10px;border-radius:4px}.neutral{background:#edf1f2;color:#53696c}.good{background:#e8f4ed;color:var(--success)}.warning{background:#fff3df;color:var(--warning)}.bad{background:#fdecec;color:var(--danger)}.details{margin:0}.details>div{display:grid;grid-template-columns:124px 1fr;gap:10px;padding:14px 0;border-bottom:1px solid #e8eeee;align-items:center}.details dt{font-size:13px;color:var(--muted)}.details dd{margin:0;font-size:14px;overflow-wrap:anywhere}.details .ip{font:600 22px/1.4 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:0}.domain-line{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.domain-line span{font-size:13px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.message{font-size:13px;line-height:1.7;padding:12px 0;color:var(--muted);min-height:47px}.message.error{color:var(--danger)}.message.success{color:var(--success)}.change-zone{padding:20px 0;border-top:1px solid var(--border)}.check-label{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:#385357}.check-label input{accent-color:var(--accent);width:17px;height:17px;margin:3px 0 0;flex-shrink:0}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.confirmation{margin-top:22px;padding:20px;background:#f1f7f6;border:1px solid #b9d1ce;border-radius:7px}.confirmation p{font-size:13px;color:#3f5c5c;margin:0}.result{border-top:1px solid var(--border);padding-top:22px;margin-top:4px}.ip-transition{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:16px 0;font:16px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace}.ip-transition svg{width:22px;height:22px;color:var(--muted)}.ip-transition strong{color:var(--accent)}.progress{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:13px;color:var(--muted)}.progress li{display:flex;align-items:center;gap:10px}.progress li:before{content:"";width:8px;height:8px;border-radius:50%;background:#9bacae}.progress li.done{color:var(--success)}.progress li.done:before{background:var(--success)}.progress li.active{color:var(--accent);font-weight:600}.progress li.active:before{background:var(--accent);outline:3px solid #d7eeeb}.result .secondary{margin:16px 0 0;font-size:13px}.footnote{font-size:12px;color:var(--muted);line-height:1.8;margin:18px 0 0;max-width:65ch}footer{color:#607577;font-size:12px;padding:20px 0}.notice{background:#fff2dc;border:1px solid #e7d1a8;color:#6b4918;padding:12px 16px;margin-bottom:24px;border-radius:6px;font-size:13px}
@media(max-width:760px){.topbar{height:64px;padding:0 20px}main{padding:28px 20px 20px}h1{font-size:25px}.workspace{grid-template-columns:1fr}.account-pane{border-right:0;border-bottom:1px solid var(--border);padding:24px}.node-pane{padding:24px}.details>div{grid-template-columns:110px 1fr}.section-heading{align-items:flex-start}.details .ip{font-size:20px}}
@media(max-width:380px){main{padding-inline:12px}.account-pane,.node-pane{padding:20px}.details>div{grid-template-columns:1fr;gap:6px}.brand-sub{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.connectivity{border-top:1px solid var(--border);margin-top:24px;padding-top:24px}.connectivity h3{margin:0}.test-intro,.test-message{font-size:13px;color:var(--muted);margin:12px 0}.test-target{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;font-size:12px;color:var(--muted)}.test-target strong{font:600 14px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace;color:#192e31}.test-target span{margin-left:auto}.test-link{font-size:13px;color:var(--accent);text-underline-offset:3px;padding:10px 0;display:inline-flex;gap:4px}.test-link:focus-visible{outline:3px solid #549d98;outline-offset:3px}.test-results{margin:16px 0}.test-group+.test-group{margin-top:20px}.test-group h4{font-size:13px;margin:0 0 8px}.probe-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;border-top:1px solid #e5ebeb;padding:10px 0;font-size:12px}.probe-row strong{display:block;font-weight:600;font-size:13px}.probe-network{color:var(--muted);overflow-wrap:anywhere}.probe-result{text-align:right;white-space:nowrap}.probe-result span{display:block;color:var(--muted);margin-top:2px}.probe-good{color:var(--success)}.probe-warning{color:var(--warning)}.probe-bad{color:var(--danger)}.probe-empty{font-size:12px;color:var(--muted);margin:8px 0}.connectivity .actions{align-items:center}