:root{--bg:#f5f3ee;--card:#fff;--ink:#1d2230;--muted:#6b7183;--line:#e4e1d8;--field:#faf9f6;--net:#f4b400;--net-soft:#fff1c2;--net-ink:#6b4e00;--host:#2f7de1;--host-soft:#dcebff;--host-ink:#0f3d7a;--ok:#1f9d6b;--bad:#d64545;--shadow:0 1px 2px #1418280f, 0 6px 24px #1418280d;--c0:#f4b400;--c1:#2f7de1;--c2:#1f9d6b;--c3:#d9577a;--c4:#8a5cf6;--c5:#e07b28;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#12141b;--card:#1b1e28;--ink:#e9ebf2;--muted:#8d93a6;--line:#2b2f3c;--field:#151821;--net:#ffc93c;--net-soft:#3a2f0d;--net-ink:#ffe08a;--host:#5aa2ff;--host-soft:#13284a;--host-ink:#b9d6ff;--ok:#3cc98f;--bad:#ff6b6b;--shadow:0 1px 2px #0000004d, 0 8px 28px #00000040;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;font-size:15px;line-height:1.45}button,input,select{font:inherit;color:inherit}.mono,.ip-input,.bit,.octet-dec,.item-value.mono{font-family:JetBrains Mono,ui-monospace,Consolas,monospace}.muted{color:var(--muted)}.small{font-size:13px}.error{color:var(--bad);font-size:13px}.page{flex-direction:column;gap:16px;max-width:1040px;margin:0 auto;padding:28px 16px 48px;display:flex}.top{justify-content:space-between;align-items:center;display:flex}.brand{align-items:center;gap:14px;display:flex}.duck{filter:drop-shadow(0 3px 6px #f4b40059);font-size:38px}h1{letter-spacing:-.02em;margin:0;font-size:24px}h2{letter-spacing:-.01em;margin:0;font-size:15px;font-weight:600}.tag{color:var(--muted);margin:2px 0 0;font-size:13px}.card{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;min-width:0;padding:20px}.card-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.label{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px;font-size:12px;font-weight:600;display:block}.ip-input{border:2px solid var(--line);background:var(--field);border-radius:12px;outline:none;width:100%;padding:12px 16px;font-size:clamp(20px,4.5vw,30px);font-weight:600;transition:border-color .15s}.ip-input:focus{border-color:var(--net)}.ip-input.bad{border-color:var(--bad)}.hint-row{min-height:22px;margin-top:8px;font-size:13px}.input-pair{grid-template-columns:minmax(0,1fr) minmax(0,340px);align-items:end;gap:12px;display:grid}.field{flex-direction:column;min-width:0;display:flex}.mask-select{border:2px solid var(--line);background:var(--field);cursor:pointer;border-radius:12px;outline:none;width:100%;height:100%;min-height:62px;padding:0 14px;font-family:JetBrains Mono,ui-monospace,Consolas,monospace;font-size:15px;font-weight:600;transition:border-color .15s}.mask-select:focus{border-color:var(--net)}.ip-error{background:color-mix(in srgb, var(--bad) 10%, transparent);border:1px solid color-mix(in srgb, var(--bad) 35%, transparent);border-radius:10px;flex-wrap:wrap;align-items:center;gap:12px;padding:10px 12px;display:flex}.ip-error .error{font-size:14px}.octet-check{align-items:baseline;font-family:JetBrains Mono,monospace;font-size:16px;font-weight:600;display:inline-flex}.oc{border-radius:6px;padding:2px 6px}.oc.ok{color:var(--ok)}.oc.nok{background:var(--bad);color:#fff;-webkit-text-decoration:underline wavy;text-decoration:underline wavy}.oc-dot{color:var(--muted);padding:0 1px}.slider-row{align-items:center;gap:14px;margin-top:10px;display:flex}.prefix-badge{background:var(--net);color:#2a1f00;text-align:center;border-radius:10px;min-width:58px;padding:4px 10px;font-family:JetBrains Mono,monospace;font-size:18px;font-weight:600}.slider-hosts{color:var(--muted);white-space:nowrap;text-align:right;min-width:110px;font-size:13px}input[type=range]{accent-color:var(--net);flex:1;height:24px}.tools-row{border-top:1px dashed var(--line);flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:16px;padding-top:16px;display:flex}.hosts-helper{flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;display:flex}.hosts-helper input{border:1px solid var(--line);background:var(--field);border-radius:8px;width:90px;padding:6px 10px}.examples{flex-wrap:wrap;gap:6px;display:flex}.chip{border:1px solid var(--line);background:var(--field);cursor:pointer;border-radius:999px;padding:5px 12px;font-family:JetBrains Mono,monospace;font-size:13px;transition:border-color .15s,transform .1s}.chip:hover{border-color:var(--net)}.chip:active{transform:scale(.97)}.chip.accent{background:var(--net);color:#2a1f00;border-color:var(--net);font-weight:600}.legend{color:var(--muted);gap:14px;font-size:13px;display:flex}.legend span{align-items:center;gap:6px;display:inline-flex}.sw{border-radius:3px;width:12px;height:12px;display:inline-block}.sw.net{background:var(--net)}.sw.host{background:var(--host)}.bits-scroll{margin:0 -4px;padding:0 4px 4px;overflow-x:auto}.bits{border-collapse:separate;border-spacing:0 6px;width:100%;min-width:640px}.bits th{text-align:left;color:var(--muted);white-space:nowrap;width:80px;padding-right:10px;font-size:12px;font-weight:600}.octet{padding:0 6px}.octet-bits{grid-template-columns:repeat(8,1fr);gap:2px;display:grid}.bit{cursor:pointer;border:0;border-radius:5px;height:28px;padding:0;font-size:13px;font-weight:600;transition:transform 80ms,background .2s}.bit:hover{transform:translateY(-2px)}.bit.net{background:var(--net-soft);color:var(--net-ink)}.bit.net.b1{background:var(--net);color:#2a1f00}.bit.host{background:var(--host-soft);color:var(--host-ink)}.bit.host.b1{background:var(--host);color:#fff}.bit.edge{box-shadow:3px 0 0 -1px var(--ink)}.octet-dec{text-align:center;color:var(--muted);margin-top:3px;font-size:13px}.badges{flex-wrap:wrap;gap:6px;display:flex}.badge{border-radius:999px;padding:4px 10px;font-size:12px;font-weight:600}.badge.pub{background:color-mix(in srgb, var(--ok) 18%, transparent);color:var(--ok)}.badge.priv{background:var(--host-soft);color:var(--host-ink)}.badge.ghost{border:1px solid var(--line);color:var(--muted);font-weight:500}.grid{grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px;display:grid}.item{text-align:left;border:1px solid var(--line);background:var(--field);cursor:pointer;border-radius:12px;flex-direction:column;gap:2px;min-width:0;padding:10px 14px;transition:border-color .15s;display:flex;position:relative}.item:hover{border-color:var(--net)}.item.wide{grid-column:span 2}.item-label{color:var(--muted);font-size:12px}.item-value{overflow-wrap:anywhere;font-size:16px;font-weight:600}.copied{color:var(--ok);opacity:0;font-size:11px;transition:opacity .15s;position:absolute;top:8px;right:10px}.copied.show{opacity:1}.tabs{background:var(--field);border:1px solid var(--line);border-radius:12px;gap:4px;width:fit-content;margin-bottom:16px;padding:4px;display:flex}.tabs button{cursor:pointer;color:var(--muted);background:0 0;border:0;border-radius:9px;padding:7px 14px;font-weight:500}.tabs button.on{background:var(--card);color:var(--ink);box-shadow:var(--shadow)}.panel{flex-direction:column;gap:12px;display:flex}.panel p{margin:0}.panel-controls{flex-wrap:wrap;align-items:center;gap:10px;display:flex}select{border:1px solid var(--line);background:var(--field);border-radius:8px;padding:6px 10px}.strip{border-radius:7px;gap:2px;height:14px;display:flex;overflow:hidden}.strip span{background:var(--net)}.strip span.alt{background:var(--host)}.vlsm-strip{height:22px}.strip .c0,.sw.c0{background:var(--c0)}.strip .c1,.sw.c1{background:var(--c1)}.strip .c2,.sw.c2{background:var(--c2)}.strip .c3,.sw.c3{background:var(--c3)}.strip .c4,.sw.c4{background:var(--c4)}.strip .c5,.sw.c5{background:var(--c5)}.strip .free{background:repeating-linear-gradient(45deg, var(--line), var(--line) 4px, transparent 4px, transparent 8px)}.table-scroll{border:1px solid var(--line);border-radius:12px;max-height:420px;overflow:auto}table.list{border-collapse:collapse;width:100%;font-size:14px}.list th{background:var(--card);text-align:left;color:var(--muted);border-bottom:1px solid var(--line);white-space:nowrap;padding:9px 12px;font-size:12px;font-weight:600;position:sticky;top:0}.list td{border-bottom:1px solid var(--line);white-space:nowrap;padding:8px 12px}.list tbody tr:last-child td{border-bottom:0}.list tbody tr{cursor:default}.panel .list tbody tr[title]{cursor:pointer}.list tbody tr:hover td{background:var(--field)}.needs{flex-direction:column;align-items:flex-start;gap:8px;display:flex}.need{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.need input{border:1px solid var(--line);background:var(--field);border-radius:8px;padding:7px 10px}.need input:first-child{width:200px}.need input[type=number]{width:90px}.icon{color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:6px;padding:6px}.icon:hover{color:var(--bad)}.foot{text-align:center;color:var(--muted);margin-top:8px;font-size:13px}.foot a{color:inherit;font-weight:600}@media (width<=560px){.page{padding-top:18px}.card{border-radius:14px;padding:16px}.item.wide{grid-column:auto}.input-pair{grid-template-columns:1fr}.mask-select{min-height:52px}.grid{grid-template-columns:1fr 1fr}.tools-row{flex-direction:column}.slider-hosts{min-width:0}.bits{border-spacing:0;min-width:0}.bits tbody,.bits tr,.bits th,.bits td{display:block}.bits tr{grid-template-columns:1fr 1fr;gap:6px 10px;margin-bottom:14px;display:grid}.bits th{grid-column:1/-1;width:auto;padding:0}.octet{padding:0}.bit{height:26px;font-size:12px}}
