:root{--bg:#FFFBF3;--bg2:#FFF2E0;--ink:#282828;--ink2:#4A4A4A;--ink3:#6B6B6B;--or:#EC652A;--gold:#F1B62D;--ok:#1F9D55;--dk:#1C1A17;--dk2:#26231F;--dkl:rgba(255,255,255,.09);--serif:"Vollkorn",Georgia,serif;--sans:"Karla",ui-sans-serif,system-ui,sans-serif;--mono:"JetBrains Mono",ui-monospace,Menlo,monospace}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;display:flex;flex-direction:column;min-height:100vh}
a{color:var(--or);text-decoration:none}
a:hover{color:#C94F1B}
.er__top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px clamp(18px,4vw,48px)}
.er__logo img{display:block;height:34px;width:auto}
.er__topl{display:flex;gap:10px}
.er__btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-weight:700;font-size:15px;line-height:1;padding:13px 20px;border-radius:999px;border:2px solid var(--ink);color:var(--ink);background:transparent;cursor:pointer;transition:transform .15s,background .15s,color .15s}
.er__btn:hover{transform:translateY(-2px);color:var(--ink)}
.er__btn--fill{background:var(--ink);color:#fff}
.er__btn--fill:hover{color:#fff;background:#000}
.er__btn--or{background:var(--or);border-color:var(--or);color:#fff}
.er__btn--or:hover{color:#fff;background:#D9561E}
.er__btn--wa{background:#25D366;border-color:#25D366;color:#fff}
.er__btn--wa:hover{color:#fff;background:#1EBE5A}
.er__main{flex:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(28px,5vw,72px);align-items:center;max-width:1240px;width:100%;margin:0 auto;padding:clamp(16px,4vw,48px) clamp(18px,4vw,48px) clamp(40px,6vw,80px)}
.er__code{font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--or);display:inline-flex;align-items:center;gap:10px;background:color-mix(in oklab,var(--or) 10%,transparent);border:1.5px solid color-mix(in oklab,var(--or) 28%,transparent);padding:7px 13px;border-radius:999px}
.er__code i{width:8px;height:8px;border-radius:50%;background:var(--or);animation:erPulse 1.6s infinite}
@keyframes erPulse{0%,100%{opacity:1}50%{opacity:.25}}
.er__h{font-family:var(--serif);font-weight:600;font-size:clamp(38px,5.4vw,72px);line-height:1;letter-spacing:-.025em;margin:20px 0 0;text-wrap:balance}
.er__h em{font-style:italic;color:var(--or);font-weight:500}
.er__p{font-size:18px;line-height:1.62;color:var(--ink2);margin:18px 0 0;max-width:34em;text-wrap:pretty}
.er__p b{color:var(--ink)}
.er__path{font-family:var(--mono);font-size:14px;background:var(--bg2);border:1.5px solid color-mix(in oklab,var(--ink) 14%,transparent);border-radius:8px;padding:2px 8px;display:inline-block;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom;line-height:1.5}
.er__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.er__links{margin-top:34px;padding-top:24px;border-top:1.5px dashed color-mix(in oklab,var(--ink) 22%,transparent)}
.er__linksT{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);margin:0 0 12px}
.er__chips{display:flex;flex-wrap:wrap;gap:8px}
.er__chips a{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--ink);background:#fff;border:1.5px solid color-mix(in oklab,var(--ink) 14%,transparent);border-radius:999px;padding:9px 15px;transition:border-color .15s,transform .15s}
.er__chips a:hover{border-color:var(--or);transform:translateY(-1px);color:var(--ink)}
.er__chips a span{width:7px;height:7px;border-radius:50%;background:var(--or)}
.er__foot{text-align:center;font-size:13px;color:var(--ink3);padding:0 20px 24px}

/* shared dark panel */
.erPanel{position:relative;background:linear-gradient(170deg,var(--dk2),var(--dk));border-radius:22px;color:#fff;box-shadow:0 30px 70px rgba(40,28,10,.28);overflow:hidden}
.erPanel::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--dkl) 1px,transparent 1px),linear-gradient(90deg,var(--dkl) 1px,transparent 1px);background-size:32px 32px;opacity:.55;mask-image:radial-gradient(520px 340px at 70% 20%,#000,transparent 78%);pointer-events:none}
.erPanel__bar{position:relative;display:flex;align-items:center;gap:8px;padding:14px 18px;border-bottom:1px solid var(--dkl);font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.55)}
.erPanel__bar b{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.16)}
.erPanel__bar b:first-child{background:var(--or)}
.erPanel__bar span{margin-left:8px}

/* 404: rack with missing unit + traceroute */
.erRack{position:relative;padding:22px 22px 6px;display:grid;gap:8px}
.erU{display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:12px;height:44px;padding:0 14px;border-radius:9px;background:#2F2B25;border:1px solid rgba(0,0,0,.4);font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.62)}
.erU__n{color:rgba(255,255,255,.38);font-size:11px}
.erU__bays{display:flex;gap:5px}
.erU__bays i{width:16px;height:22px;border-radius:3px;background:#1A1714;box-shadow:inset 0 0 0 1px rgba(255,255,255,.05)}
.erU__led{width:9px;height:9px;border-radius:50%;background:#4ADE80;box-shadow:0 0 8px #4ADE80}
.erU--miss{background:transparent;border:2px dashed color-mix(in oklab,var(--or) 70%,transparent);color:var(--gold);height:84px;animation:erMiss 2.4s ease-in-out infinite}
.erU--miss .erU__n{color:var(--gold)}
.erU__big{font-family:var(--serif);font-size:40px;font-weight:700;letter-spacing:-.02em;color:#fff;line-height:1}
.erU__big small{display:block;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--gold);margin-top:6px;text-transform:uppercase}
.erU--miss .erU__led{background:var(--or);box-shadow:0 0 10px var(--or);animation:erPulse 1s infinite}
@keyframes erMiss{0%,100%{border-color:color-mix(in oklab,var(--or) 70%,transparent)}50%{border-color:color-mix(in oklab,var(--or) 25%,transparent)}}
.erTr{position:relative;margin:14px 22px 22px;background:rgba(0,0,0,.32);border:1px solid var(--dkl);border-radius:12px;padding:14px 16px;font-family:var(--mono);font-size:12.5px;line-height:1.75;min-height:172px}
.erTr__l{display:flex;gap:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;opacity:0;transform:translateY(4px);transition:opacity .25s,transform .25s}
.erTr__l.on{opacity:1;transform:none}
.erTr__l .k{color:rgba(255,255,255,.4);width:18px;flex-shrink:0}
.erTr__l .h{color:rgba(255,255,255,.82);overflow:hidden;text-overflow:ellipsis}
.erTr__l .ms{margin-left:auto;color:#4ADE80;flex-shrink:0}
.erTr__l.bad .h,.erTr__l.bad .ms{color:var(--or)}
.erTr__l.cmd .h{color:var(--gold)}

/* 403: firewall log + gate */
.erFw{position:relative;padding:20px 22px 22px}
.erFw__gate{display:flex;align-items:center;gap:16px;padding:18px;border-radius:14px;background:color-mix(in oklab,var(--or) 14%,transparent);border:1.5px solid color-mix(in oklab,var(--or) 45%,transparent);margin-bottom:16px}
.erFw__shield{flex-shrink:0;width:58px;height:58px;display:grid;place-items:center;border-radius:14px;background:var(--or)}
.erFw__gateT{display:block;font-family:var(--serif);font-size:30px;font-weight:700;letter-spacing:-.01em;line-height:1}
.erFw__gateS{display:block;font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.7);margin-top:6px}
.erFw__log{background:rgba(0,0,0,.32);border:1px solid var(--dkl);border-radius:12px;overflow:hidden;font-family:var(--mono);font-size:12px}
.erFw__hd,.erFw__row{display:grid;grid-template-columns:62px 64px minmax(0,1fr) 54px;gap:10px;align-items:center;padding:9px 14px}
.erFw__hd{color:rgba(255,255,255,.38);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--dkl)}
.erFw__row{color:rgba(255,255,255,.72);border-bottom:1px solid rgba(255,255,255,.04);animation:erRow .4s both}
.erFw__row:last-child{border-bottom:0}
.erFw__row .p{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.erFw__row .a{font-weight:700;color:#4ADE80;text-align:right}
.erFw__row.me{background:color-mix(in oklab,var(--or) 18%,transparent);color:#fff}
.erFw__row.me .a{color:var(--or)}
.erFw__row.me .p{color:var(--gold)}
@keyframes erRow{from{opacity:0;transform:translateX(-6px)}to{opacity:1;transform:none}}
.erFw__ref{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:14px;font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.55)}
.erFw__ref b{color:#fff;font-weight:600}
.er__why{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:10px}
.er__why li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;line-height:1.5;color:var(--ink2)}
.er__why li i{flex-shrink:0;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:color-mix(in oklab,var(--or) 14%,transparent);color:var(--or);margin-top:1px}

@media (max-width:900px){.er__main{grid-template-columns:1fr}.erPanel{order:-1}.er__h{margin-top:16px}}
@media (max-width:520px){.er__topl .er__btn:not(.er__btn--fill){display:none}.erU__bays i:nth-child(n+5){display:none}.erFw__hd,.erFw__row{grid-template-columns:52px 50px minmax(0,1fr) 46px;gap:8px;padding:8px 10px;font-size:11px}.er__btn{flex:1 1 auto;justify-content:center}.er__p{font-size:16.5px}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.erTr__l{opacity:1;transform:none}}