:root{
  --bg:#fff;--surface:#fff;--surface-2:#f0f4f9;--ink:#202124;--muted:#596575;--line:#dfe3eb;
  --accent:#0b57d0;--accent-ink:#fff;--accent-soft:#e9eff9;--red:#e0364a;
  --ok:#146c2e;--ok-soft:#e6f4ea;--warn:#8a5300;--warn-soft:#fdf1dc;--bad:#b3261e;--bad-soft:#fce8e6;
  --radius:20px;--shadow:none;--font:Arial,Helvetica,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#111722;--surface:#1a2331;--surface-2:#202b3b;--ink:#e5eaf2;--muted:#b6c1d2;--line:#394455;
  --accent:#9dc1ff;--accent-ink:#102443;--accent-soft:#26364c;--red:#ff6b7a;
  --ok:#8fdcaa;--ok-soft:#133321;--warn:#f3b85b;--warn-soft:#33260f;--bad:#ffb4ab;--bad-soft:#3a1519;
  --shadow:none;color-scheme:dark;
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--font)}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}
code{font-family:var(--mono);font-size:.9em;background:var(--surface-2);padding:.1em .35em;border-radius:5px;overflow-wrap:anywhere}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em}
h1{font-size:clamp(1.8rem,4vw,2.6rem);margin:.2em 0 .3em}
h2{font-size:1.35rem;margin:1.6em 0 .5em}

.top{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top .wrap{position:relative}
.top .wrap{display:flex;align-items:center;gap:20px;min-height:60px}
.brand{font-weight:750;font-size:1.15rem;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:8px;white-space:nowrap}
.brand b span{color:var(--muted);font-weight:600}.brand b{font-weight:750}
.logo{width:22px;height:22px;border-radius:6px;background:var(--accent);position:relative;display:inline-block}
.logo::after{content:"";position:absolute;right:4px;top:8px;width:6px;height:6px;border-radius:50%;background:var(--red)}
.top nav{display:flex;align-items:center;gap:4px;flex:1;justify-content:flex-end}
.top nav a{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:8px;font-size:.95rem;white-space:nowrap}
.top nav a:hover{background:var(--surface-2);color:var(--ink)}
.top nav a:last-child{background:var(--accent);color:var(--accent-ink);font-weight:600;margin-left:6px}
.top nav a:last-child:hover{filter:brightness(1.08);color:var(--accent-ink)}
.navtoggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;margin-left:auto;padding:0 11px;background:none;border:1px solid var(--line);border-radius:10px;cursor:pointer}
.navtoggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.navtoggle[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navtoggle[aria-expanded=true] span:nth-child(2){opacity:0}
.navtoggle[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (max-width:760px){
  .navtoggle{display:flex}
  .top nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:8px;max-height:0;overflow:hidden;visibility:hidden;transition:max-height .25s ease}
  .top nav.open{max-height:80vh;visibility:visible;overflow-y:auto}
  .top nav a{padding:12px 14px;border-radius:10px;font-size:1rem}
  .top nav a:last-child{margin:6px 0 0;text-align:center}
}

.crumbs{font-size:.88rem;color:var(--muted);margin-top:22px}
.crumbs a{color:var(--muted)}
.crumbs span{margin:0 4px}
.hero{padding:18px 0 8px}
.hero.home{padding:48px 0 12px}
.lead{font-size:1.12rem;color:var(--muted);max-width:720px;margin:0 0 18px}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
form.tool{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
form.tool label{display:flex;flex-direction:column;gap:5px;font-size:.85rem;color:var(--muted);font-weight:600;min-width:130px}
form.tool label.grow{flex:1 1 280px}
form.tool label.narrow{min-width:90px;width:100px}
input,select{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:11px 12px;width:100%;min-height:46px}
input:focus,select:focus,button:focus-visible{outline:3px solid var(--accent-soft);border-color:var(--accent)}
button[type=submit],.btn{font:inherit;font-weight:650;background:var(--accent);color:var(--accent-ink);border:0;border-radius:10px;padding:0 20px;min-height:46px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap}
button[type=submit]:hover,.btn:hover{filter:brightness(1.08)}
button[disabled]{opacity:.6;cursor:progress}
@media (max-width:560px){form.tool label,form.tool label.narrow{flex:1 1 100%;width:auto}form.tool button[type=submit]{width:100%}}
.hero .quick{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);max-width:760px}
.chips{display:flex;flex-wrap:wrap;gap:6px;flex-basis:100%}
.chip{font:inherit;font-size:.82rem;background:var(--surface-2);color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:4px 10px;cursor:pointer}
.chip b{font-family:var(--mono);font-weight:600;color:var(--muted)}
.chip:hover{border-color:var(--accent)}

.results:not(:empty){margin-top:20px;border-top:1px solid var(--line);padding-top:18px}
.results .note{color:var(--muted);font-size:.9rem;margin:.4em 0}
.loading{display:flex;align-items:center;gap:10px;color:var(--muted)}
.loading::before{content:"";width:16px;height:16px;border-radius:50%;border:2px solid var(--line);border-top-color:var(--accent);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.alert{padding:12px 14px;border-radius:10px;background:var(--bad-soft);color:var(--bad);font-weight:500}
.alert.info{background:var(--surface-2);color:var(--muted)}
.badge{display:inline-block;font-size:.78rem;font-weight:700;padding:2px 9px;border-radius:999px;letter-spacing:.02em;white-space:nowrap}
.badge.ok{background:var(--ok-soft);color:var(--ok)}
.badge.warn{background:var(--warn-soft);color:var(--warn)}
.badge.bad{background:var(--bad-soft);color:var(--bad)}
.badge.muted{background:var(--surface-2);color:var(--muted)}
.rtype{margin:0 0 18px}
.rtype h3{font-size:1rem;margin:0 0 6px;display:flex;align-items:center;gap:8px}
.tbl{width:100%;border-collapse:collapse;font-size:.93rem}
.tbl th{text-align:left;color:var(--muted);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;padding:6px 10px;border-bottom:1px solid var(--line)}
.tbl td{padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl td.v{font-family:var(--mono);font-size:.88rem;overflow-wrap:anywhere;word-break:break-word}
.tbl td.n{white-space:nowrap;color:var(--muted);font-variant-numeric:tabular-nums}
.tbl tr.auth td{background:var(--accent-soft)}
.scroll{overflow-x:auto}
.summary{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:14px}
.big-state{font-size:1.5rem;font-weight:750;margin:0 0 4px}
.big-state.ok{color:var(--ok)}.big-state.bad{color:var(--bad)}.big-state.warn{color:var(--warn)}
.kv{display:grid;grid-template-columns:minmax(120px,max-content) 1fr;gap:6px 18px;margin:12px 0;font-size:.95rem}
.kv dt{color:var(--muted)}
.kv dd{margin:0;overflow-wrap:anywhere}
.chain{display:grid;gap:10px;margin-top:10px}
.cert{border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.cert h4{margin:0 0 4px;font-size:.98rem}
.cert .san{font-family:var(--mono);font-size:.8rem;color:var(--muted);overflow-wrap:anywhere}
.mc{display:flex;gap:16px;align-items:flex-start}
.mc img{width:64px;height:64px;image-rendering:pixelated;border-radius:8px;flex:none}
.motd{font-family:var(--mono);background:#1b1b1b;color:#f2f2f2;padding:10px 12px;border-radius:8px;white-space:pre-wrap;margin:8px 0;font-size:.9rem}
.share{margin-top:14px;font-size:.85rem;color:var(--muted)}
.share button{font:inherit;background:none;border:0;color:var(--accent);cursor:pointer;padding:0;text-decoration:underline}

.promo{margin:26px 0;display:flex;gap:20px;align-items:center;justify-content:space-between;background:linear-gradient(135deg,var(--accent-soft),var(--surface));border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}
.promo h2{margin:0 0 4px;font-size:1.12rem}
.promo p{margin:0;color:var(--muted)}
@media (max-width:640px){.promo{flex-direction:column;align-items:stretch}}

.prose{max-width:760px}
.prose li{margin:.3em 0}
table.ref{border-collapse:collapse;width:100%;max-width:560px;font-size:.95rem}
table.ref th,table.ref td{border-bottom:1px solid var(--line);padding:7px 10px;text-align:left}
.faq{max-width:760px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:8px 0}
.faq summary{cursor:pointer;font-weight:600}
.faq p{margin:.6em 0 0;color:var(--muted)}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px}
.grid.big{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.tile{display:flex;flex-direction:column;gap:2px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 16px;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.tile:hover{border-color:var(--accent);transform:translateY(-1px)}
.tile span{color:var(--muted);font-size:.88rem}
.grid.big .tile{padding:18px 20px}
.grid.big .tile strong{font-size:1.08rem}

.foot{margin-top:56px;border-top:1px solid var(--line);background:var(--surface);padding:28px 0 36px;font-size:.92rem}
.foot .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px}
.foot h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 8px}
.foot a{display:block;color:var(--ink);text-decoration:none;padding:3px 0}
.foot a:hover{color:var(--accent)}
.foot .small{color:var(--muted);margin-top:22px}
.foot .small a{display:inline;color:var(--accent)}
.pre{white-space:pre-wrap}.alert.gap{margin:6px 0}
.ipbox{text-align:center;padding-bottom:0}
.eyebrow{color:var(--muted);font-weight:600;margin:0}
.myip{font-family:var(--mono);font-size:clamp(2rem,8vw,4.2rem);letter-spacing:-.02em;margin:.1em 0 .3em;overflow-wrap:anywhere;color:var(--accent)}
.ipactions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:22px}
.btn.ghost{background:var(--surface);color:var(--accent);border:1px solid var(--line)}
.ipinfo{text-align:left;max-width:640px;margin:0 auto}
.ipinfo .kv{margin:0}
pre.code{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:14px 16px;overflow-x:auto;font-size:.9rem;line-height:1.5}
pre.code code{background:none;padding:0}
.ipbox h1.eyebrow{font-size:1.25rem;color:var(--ink);margin:0}
.iplabel{margin:.6em 0 0}

/* ---------------------------------------------------------------- selfhost.uk.app additions */
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:var(--accent-ink);padding:8px 14px;border-radius:0 0 8px 0;z-index:10}
.skip:focus{left:0}
.px{position:absolute;left:-9999px}
.hero.home{padding:48px 0 8px}
.herolinks{display:flex;gap:10px;flex-wrap:wrap;margin:6px 0 10px}
.steps3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:26px 0 8px}
.steps3>div{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.steps3 h2{font-size:1.08rem;margin:.5em 0 .3em}
.steps3 p{margin:0;color:var(--muted)}
.num{display:inline-flex;width:30px;height:30px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-weight:750;align-items:center;justify-content:center}
.guidehead{padding-bottom:0}
.meta{color:var(--muted);font-size:.9rem;margin:0 0 16px}
.glance{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:4px 0 26px}
.glance div{background:var(--surface);padding:12px 16px}
.glance dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:650}
.glance dd{margin:2px 0 0;font-weight:550}
.guide{display:grid;grid-template-columns:220px minmax(0,1fr);gap:36px;align-items:start}
.toc{position:sticky;top:78px;font-size:.9rem;max-height:calc(100vh - 100px);overflow:auto}
.toc p{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:650;margin:0 0 8px}
.toc ol{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.toc li{margin:0}
.toc a{display:block;padding:5px 0 5px 12px;margin-left:-2px;border-left:2px solid transparent;color:var(--muted);text-decoration:none;line-height:1.35}
.toc a:hover,.toc a.on{color:var(--accent);border-left-color:var(--accent)}
@media (max-width:900px){.guide{display:block}.toc{position:static;max-height:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px}}
.guidebody{min-width:0}
.prose{max-width:760px}
.prose h2{scroll-margin-top:80px}
.prose h3{font-size:1.08rem;margin:1.4em 0 .4em}
.prose ol,.prose ul{padding-left:1.4em}
.prose table{border-collapse:collapse;width:100%;font-size:.94rem;margin:12px 0}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.prose th{color:var(--muted);font-weight:650;font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}
.tablewrap{overflow-x:auto}
.prose kbd,.prose .ui{font:inherit;font-weight:600;background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:0 .35em;white-space:nowrap}
.codeblock{position:relative;margin:12px 0}
.codelabel{font-size:.78rem;color:var(--muted);font-weight:650;margin:0 0 4px}
.codeblock pre.code{margin:0;padding-right:64px}
.copy{position:absolute;right:8px;bottom:8px;font:inherit;font-size:.78rem;background:var(--surface);color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:3px 9px;cursor:pointer}
.codelabel+pre+.copy{bottom:8px}
.copy:hover{color:var(--accent);border-color:var(--accent)}
.callout{border:1px solid var(--line);border-left-width:4px;border-radius:10px;padding:12px 16px;margin:16px 0;background:var(--surface)}
.callout p{margin:.35em 0}
.callout .ctitle{font-weight:700;margin:0 0 2px}
.callout.tip{border-left-color:var(--ok)}.callout.tip .ctitle{color:var(--ok)}
.callout.warn{border-left-color:var(--warn);background:var(--warn-soft)}.callout.warn .ctitle{color:var(--warn)}
.callout.note{border-left-color:var(--accent)}.callout.note .ctitle{color:var(--accent)}
ol.checks{padding-left:1.4em}
ol.checks li{margin:.55em 0}
.sources ul{font-size:.93rem}
.faq{margin-top:10px}
.related h2{margin-top:1.8em}
pre.code{tab-size:4;-moz-tab-size:4}
.foot h3 a{display:inline;color:inherit;padding:0}.foot h3 a:hover{color:var(--accent)}
.related h2 a{color:inherit;text-decoration:none}.related h2 a:hover{color:var(--accent)}
.foot .small a{text-decoration:underline}

/* ==== uk.app family theme (matches invoice.uk.app / pdf.uk.app) ==== */
a{text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1220px;padding:0 28px}
h1{font-size:clamp(38px,5vw,60px);letter-spacing:-2px;font-weight:500;line-height:1.1;margin:18px 0}
h1 span{color:var(--accent)}
h2{font-size:21px;font-weight:500;letter-spacing:-.4px}
h3{font-weight:500}
.kicker{font-size:11px;letter-spacing:1.8px;text-transform:uppercase;color:var(--accent);font-weight:700}
.lead{font-size:17px;max-width:690px;margin-bottom:22px}
.top{position:static;background:var(--bg)}
.top .wrap{min-height:0;padding-top:19px;padding-bottom:19px}
.brand{font-weight:700;font-size:23px;letter-spacing:-.6px;gap:9px}
.brand:hover{text-decoration:none}
.brand img{width:30px;height:30px;flex:none}
.brand span{color:var(--accent);margin-left:-9px}
.top nav{gap:24px}
.top nav a{color:var(--accent);padding:6px 0;border-radius:0;font-size:14px}
.top nav a:hover{background:none;color:var(--accent);text-decoration:underline}
.top nav a:last-child{background:var(--accent);color:var(--accent-ink);font-weight:400;margin-left:0;border-radius:24px;padding:11px 20px}
.top nav a:last-child:hover{filter:brightness(1.08);color:var(--accent-ink);text-decoration:none}
@media (max-width:760px){.top nav{gap:0;padding:8px 16px 14px}.top nav a{padding:12px 4px;font-size:15px;border-radius:0;border-bottom:1px solid var(--line)}.top nav a:last-child{margin:10px 0 0;text-align:center;border-bottom:0;border-radius:24px;padding:12px 20px}}
.navtoggle{border-radius:12px}
.crumbs{margin-top:34px;font-size:13px}
.hero{padding:10px 0 14px}
.hero.home{padding:42px 0 14px}
.card{border-radius:var(--radius);box-shadow:none;padding:24px}
.hero .quick{border-radius:var(--radius);box-shadow:none;padding:24px;max-width:860px}
input,select{border-color:#bbc4d0;border-radius:9px;min-height:44px}
@media (prefers-color-scheme:dark){input,select{background:#111b29;border-color:#52627a}}
button[type=submit],.btn{border-radius:24px;font-weight:400;font-size:14px;min-height:44px;padding:0 22px}
.btn.ghost{background:var(--accent-soft);color:var(--accent);border:0}
.btn:hover{text-decoration:none}
.chip{background:var(--surface-2);border:0;border-radius:30px;padding:6px 12px;font-size:12px}
.chip b{color:var(--accent)}
.promo{background:var(--surface-2);border:0;border-radius:var(--radius);padding:26px;margin:28px 0}
.promo h2{font-size:21px;font-weight:500}
.tile{border-radius:16px;padding:16px 18px}
.tile strong{color:var(--accent);font-weight:400;font-size:17px}
.grid.big .tile{padding:22px 24px}
.grid.big .tile strong{font-size:19px}
.tile:hover{transform:none;text-decoration:none}
.faq details{background:none;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:19px 0;margin:0}
.faq summary{font-weight:400;font-size:15px}
.faq p{font-size:14px}
.tbl th{font-weight:700;font-size:11px;letter-spacing:1.2px}
pre.code{border-radius:16px}
.cert{border-radius:16px}
.badge{font-size:12px;font-weight:400;padding:4px 10px}
.big-state{font-weight:500;font-size:26px;letter-spacing:-.5px}
.ipbox h1.eyebrow{font-size:11px;letter-spacing:1.8px;text-transform:uppercase;color:var(--accent);font-weight:700;margin:0}
.iplabel{color:var(--muted);font-size:17px}
.myip{font-family:var(--font);font-weight:500;letter-spacing:-2px;font-size:clamp(38px,8vw,72px);color:var(--ink)}
.prose{max-width:860px}.prose p{line-height:1.7}
.foot{background:var(--bg);font-size:13px;margin-top:48px}
.foot h3{font-size:11px;letter-spacing:1.8px;font-weight:700}
.foot a{color:var(--accent)}
.foot .small{font-size:12px}
@media (max-width:540px){
  .wrap{padding:0 16px}
  .top .wrap{padding-top:16px;padding-bottom:16px}
  .brand{font-size:19px}.brand img{width:26px;height:26px}
  h1{font-size:38px;letter-spacing:-1.4px}
  .lead{font-size:15px}
  .card,.hero .quick{padding:18px}
  .promo{padding:20px}
}

/* selfhost specifics */
.hero.home{padding:42px 0 14px}
.herolinks{gap:10px;margin:0 0 10px}
.steps3{gap:26px;margin:24px 0 20px}
.steps3>div{border:0;border-top:1px solid var(--line);border-radius:0;padding:20px 0 0;box-shadow:none;background:none}
.steps3 h2{font-size:21px;font-weight:400;color:var(--accent);margin:14px 0 8px}
.steps3 p{font-size:14px}
.num{background:var(--surface-2);color:var(--accent);font-weight:400;font-size:12px}
.meta{font-size:13px}
.glance{border-radius:var(--radius)}
.glance dt{font-size:11px;letter-spacing:1.4px;font-weight:700}
.glance dd{font-weight:400}
.toc p{font-size:11px;letter-spacing:1.8px;font-weight:700;color:var(--accent)}
.toc{top:24px}
.prose h3{font-weight:500;font-size:18px}
.prose th{font-weight:700;font-size:11px;letter-spacing:1.2px}
.callout{border-radius:16px;border-left-width:1px;background:var(--surface-2);border-color:var(--line);padding:16px 20px}
.callout.tip{background:var(--ok-soft);border-color:transparent}
.callout.warn{background:var(--warn-soft);border-color:transparent}
.callout.note{background:var(--accent-soft);border-color:transparent}
.callout .ctitle{font-weight:700;font-size:11px;letter-spacing:1.4px;text-transform:uppercase}
.copy{border-radius:24px;border:0;background:var(--accent-soft);color:var(--accent);padding:5px 12px}
.prose kbd,.prose .ui{font-weight:400}
.related h2 a{color:inherit}
.foot .small a{text-decoration:none}
@media (max-width:900px){.toc{border-radius:var(--radius);padding:18px 20px}}
.guidehead h1{font-size:clamp(32px,4.2vw,50px);letter-spacing:-1.5px;max-width:1000px}