:root{color-scheme:light;--blue: #2247d8;--blue-dark: #1a38b0;--navy: #0f1a3c;--fg: #26314f;--muted: #66718f;--line: #e6eaf5;--bg: #f4f6fd;--card: #ffffff;--tint: #f4f6fd;--ok: #15803d;--bar-ok: #34a56f;--bar-fail: #d9534f;--fail: #b42318}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}h1,h2,h3{color:var(--navy);line-height:1.25}h2{font-size:22px;margin:8px 0 14px}h3{font-size:17px;margin:0 0 6px}a{color:var(--blue)}.shell>header{display:flex;justify-content:space-between;align-items:center;padding:12px 28px;background:var(--card);border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center}.shell>header nav{display:flex;gap:4px;margin-left:28px;flex:1}.shell>header nav a{color:var(--muted);text-decoration:none;font-weight:600;padding:7px 12px;border-radius:8px}.shell>header nav a:hover{background:var(--tint);color:var(--navy)}.shell>header nav a.active{color:var(--blue);background:#eaeefc}.who{display:flex;align-items:center;gap:14px}.brand img{height:30px;width:auto;display:block}main{max-width:980px;margin:28px auto 64px;padding:0 20px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;margin:14px 0;box-shadow:0 1px 2px #0f1a3c0a}.auth{display:grid;place-items:center;min-height:100vh;padding:20px}.auth .card{width:380px;max-width:100%;display:flex;flex-direction:column;gap:12px;padding:32px}.auth .logo{height:36px;width:auto;align-self:flex-start;margin-bottom:6px}.auth h1{font-size:22px;margin:4px 0 0}.auth .tagline{margin:0 0 6px;color:var(--muted)}input,select{padding:10px 12px;border:1px solid #d5dbed;border-radius:9px;background:#fff;color:var(--navy);font:inherit}input:focus,select:focus{outline:2px solid rgba(34,71,216,.35);border-color:var(--blue)}button{padding:10px 16px;border:0;border-radius:9px;background:var(--blue);color:#fff;font:inherit;font-weight:600;cursor:pointer}button:hover{background:var(--blue-dark)}button.link{background:none;color:var(--blue);padding:0;font-weight:500}button.link:hover{background:none;text-decoration:underline}.row{display:flex;gap:8px;align-items:center}.between{justify-content:space-between}.row input{flex:1}.muted{color:var(--muted)}.small{font-size:12.5px}.msg{color:var(--fail)}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}code.block{display:block;padding:12px;background:var(--tint);border:1px solid var(--line);border-radius:9px;word-break:break-all}.badge{font-size:12px;padding:3px 10px;border-radius:999px;border:1px solid var(--line);background:var(--tint)}.badge.ok{color:var(--ok);border-color:#bfe5cf;background:#e6f6ec}.badge.wait{color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}.stats .card{margin:0}.big{font-size:30px;font-weight:800;color:var(--navy);letter-spacing:-.5px}.bars{display:flex;align-items:flex-end;gap:3px;height:140px}.bar{flex:1;display:flex;flex-direction:column-reverse;height:100%;justify-content:flex-start}.bar .pass{background:var(--bar-ok)}.bar .fail{background:var(--bar-fail)}table{width:100%;border-collapse:collapse}th{text-align:left;padding:8px;border-bottom:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--muted)}td{text-align:left;padding:12px 8px;border-bottom:1px solid var(--line)}tr:last-child td{border-bottom:0}table.sources td{vertical-align:top}.sender{font-weight:700;color:var(--navy)}.pill{display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px}.pill.good{background:#e6f6ec;color:#15803d}.pill.warn{background:#fef3c7;color:#b45309}.pill.bad{background:#fee4e2;color:#b42318}.advice{margin-top:6px;font-size:13px;color:var(--muted);max-width:400px}@media (max-width: 640px){.shell>header{padding:10px 16px}.advice{max-width:none}}.form{display:flex;flex-direction:column;gap:12px;max-width:520px}.form label,label.limit{display:flex;flex-direction:column;gap:5px;font-weight:600;color:var(--navy);font-size:13.5px}.form input:disabled{background:var(--tint);color:var(--muted)}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:none}.msg-ok{color:var(--ok);margin:6px 0 0}.msg{margin:6px 0 0}.notice{background:#fef3c7;color:#92400e;border-radius:9px;padding:10px 14px;font-size:14px}.center{text-align:center;margin:0}.right{text-align:right}button:disabled{opacity:.55;cursor:not-allowed}button.secondary{background:#fff;color:var(--blue);border:1px solid #c9d3f5;font-weight:600;padding:8px 14px}button.secondary:hover{background:#eaeefc}button.danger,button.link.danger{color:var(--fail)}input[type=checkbox]{width:18px;height:18px;padding:0;accent-color:var(--blue)}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:8px;overflow-x:auto}.tab{color:var(--muted);text-decoration:none;font-weight:600;padding:10px 14px;border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}.tab:hover{color:var(--navy)}.tab.active{color:var(--blue);border-bottom-color:var(--blue)}.meter-card{padding:16px 20px}.meter{height:10px;background:var(--tint);border:1px solid var(--line);border-radius:999px;overflow:hidden;margin-top:10px}.meter .fill{height:100%;border-radius:999px}.meter .fill.good{background:var(--bar-ok)}.meter .fill.warn{background:#f0a43a}.meter .fill.bad{background:var(--bar-fail)}ul.plain{margin:8px 0 0;padding-left:20px}ul.plain li{margin:4px 0}.dns .dns-msg{margin:12px 0 0}.copybox{display:flex;gap:10px;align-items:center;background:var(--tint);border:1px solid var(--line);border-radius:9px;padding:10px 12px}.copybox code{flex:1;word-break:break-all}.limits{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;margin-top:14px}label.limit input{width:110px}@media (max-width: 640px){.shell>header{flex-wrap:wrap;gap:8px}.shell>header nav{margin-left:0;order:3;width:100%}.grid2{grid-template-columns:1fr}}.faq-search{width:100%;margin:6px 0 14px;padding:12px 14px;font-size:15px}.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px}.chips a{text-decoration:none;background:#fff;border:1px solid var(--line);color:var(--blue);font-weight:600;font-size:13.5px;padding:6px 14px;border-radius:999px}.chips a:hover{background:#eaeefc}.faq-section{padding:22px 24px;scroll-margin-top:16px}.faq details{border-top:1px solid var(--line);scroll-margin-top:16px}.faq details:first-of-type{border-top:0}.faq summary{cursor:pointer;list-style:none;padding:15px 28px 15px 0;font-weight:700;color:var(--navy);font-size:16px;position:relative}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";position:absolute;right:4px;top:11px;font-size:22px;font-weight:400;color:var(--blue)}.faq details[open]>summary:after{content:"−"}.faq .answer{padding:0 0 18px;font-size:15.5px;line-height:1.7;max-width:680px}.faq .answer p{margin:0 0 12px}.faq .answer ul,.faq .answer ol{margin:0 0 12px;padding-left:22px}.faq .answer li{margin:6px 0}.helpnote{background:#eaeefc;border-left:4px solid var(--blue);border-radius:8px;padding:12px 16px;margin:0 0 12px;color:var(--navy)}.glossary{margin:0}.glossary dt{font-weight:700;color:var(--navy);margin-top:14px}.glossary dd{margin:2px 0 0;color:var(--fg);line-height:1.6;max-width:680px}