:root{
  --ground:#F1F3F1;--surface:#FFFFFF;--surface-alt:#E7ECE8;
  --ink:#10201F;--ink-soft:#47534F;--ink-faint:#79837F;
  --rule:#D4DAD6;--rule-strong:#B5BFB9;
  --brass:#8F6218;--brass-hi:#B3822C;--brass-soft:#F1E7D3;
  --petrol:#164F49;--petrol-deep:#0D2E2B;
  --on-dark:#EAF0ED;--on-dark-soft:#A5B7B2;--dark-rule:rgba(234,240,237,.16);
  --shadow:0 1px 2px rgba(16,32,31,.05),0 10px 30px -20px rgba(16,32,31,.4);
  --maxw:1140px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ground:#0D1716;--surface:#15201E;--surface-alt:#1C2726;
    --ink:#E9EFEC;--ink-soft:#A8B3AF;--ink-faint:#7B8682;
    --rule:#293533;--rule-strong:#3B4946;
    --brass:#DCAC51;--brass-hi:#EEC97F;--brass-soft:#2A2317;
    --petrol:#6FB5A8;--petrol-deep:#0A211F;
    --on-dark:#EAF0ED;--on-dark-soft:#9FB1AC;--dark-rule:rgba(234,240,237,.14);
    --shadow:0 1px 2px rgba(0,0,0,.35),0 10px 30px -20px rgba(0,0,0,.85);
  }
}
:root[data-theme="dark"]{
  --ground:#0D1716;--surface:#15201E;--surface-alt:#1C2726;
  --ink:#E9EFEC;--ink-soft:#A8B3AF;--ink-faint:#7B8682;
  --rule:#293533;--rule-strong:#3B4946;
  --brass:#DCAC51;--brass-hi:#EEC97F;--brass-soft:#2A2317;
  --petrol:#6FB5A8;--petrol-deep:#0A211F;
  --on-dark:#EAF0ED;--on-dark-soft:#9FB1AC;--dark-rule:rgba(234,240,237,.14);
  --shadow:0 1px 2px rgba(0,0,0,.35),0 10px 30px -20px rgba(0,0,0,.85);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ground);color:var(--ink);
  font-family:"Public Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16.5px;line-height:1.6;-webkit-font-smoothing:antialiased}
.container{max-width:var(--maxw);margin:0 auto;padding-inline:clamp(1.1rem,4vw,3rem)}
a{color:inherit}
:focus-visible{outline:2px solid var(--brass-hi);outline-offset:3px}
.mono{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.7rem;letter-spacing:.13em;text-transform:uppercase}
.skip{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.skip:focus{position:fixed;width:auto;height:auto;clip-path:none;left:1rem;top:1rem;z-index:99;background:var(--surface);color:var(--ink);padding:.6rem 1rem;border:1px solid var(--rule)}

/* nav */
.nav{background:var(--petrol-deep);color:var(--on-dark);border-bottom:1px solid var(--dark-rule);position:sticky;top:0;z-index:50}
.nav-inner{display:flex;align-items:center;gap:1.5rem;min-height:66px}
.brand{display:flex;align-items:baseline;gap:.55rem;text-decoration:none;margin-right:auto}
.brand-mark{font-family:"Newsreader",Georgia,serif;font-size:1.3rem;font-weight:600;letter-spacing:-.01em;color:var(--on-dark)}
.brand-sub{color:var(--on-dark-soft);font-size:.66rem;letter-spacing:.09em;text-transform:uppercase;font-family:"IBM Plex Mono",monospace}
.nav-links{display:flex;gap:1.3rem;align-items:center}
.nav-links a{color:var(--on-dark-soft);text-decoration:none;font-size:.88rem;font-weight:500}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--on-dark)}
.lang{color:var(--on-dark-soft);font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.08em;text-decoration:none}
.lang b{color:var(--on-dark)}
.btn{display:inline-block;font-weight:600;font-size:.9rem;text-decoration:none;padding:.62rem 1.1rem;border-radius:1px;border:1px solid transparent;white-space:nowrap;transition:background .15s ease,color .15s ease,border-color .15s ease;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--brass-hi);color:#14100A;border-color:var(--brass-hi)}
.btn-primary:hover{background:#C9953A;border-color:#C9953A}
.btn-ghost-dark{color:var(--on-dark);border-color:var(--dark-rule)}
.btn-ghost-dark:hover{border-color:var(--on-dark-soft)}
.btn-ghost{color:var(--ink);border-color:var(--rule-strong);background:transparent}
.btn-ghost:hover{border-color:var(--ink)}
.btn-lg{padding:.82rem 1.5rem;font-size:.96rem}
@media(max-width:1020px){.nav-links{display:none}}
@media(max-width:430px){
  .nav-inner{gap:.75rem}
  .brand-sub{display:none}
  .brand-mark{font-size:1.15rem}
  .nav .btn-primary{padding:.5rem .7rem;font-size:.8rem}
}

/* page header */
.phead{background:var(--petrol-deep);color:var(--on-dark);position:relative;overflow:hidden}
.phead::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(to bottom,rgba(234,240,237,.05) 0 1px,transparent 1px 34px);pointer-events:none}
.phead-inner{position:relative;padding-block:clamp(2.4rem,5vw,3.8rem)}
.crumb{color:var(--on-dark-soft);font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.11em;text-transform:uppercase;margin:0 0 1rem;display:flex;flex-wrap:wrap;gap:.5rem}
.crumb a{color:var(--brass-hi);text-decoration:none}
.crumb span{color:var(--on-dark-soft)}
.phead h1{font-family:"Newsreader",Georgia,serif;font-weight:500;font-size:clamp(2rem,4.6vw,3.1rem);line-height:1.06;letter-spacing:-.02em;text-wrap:balance;margin:0 0 .85rem;max-width:22ch}
.phead .lede{color:var(--on-dark-soft);max-width:60ch;margin:0;font-size:clamp(1rem,1.9vw,1.1rem)}
.stamp{display:inline-flex;align-items:center;gap:.5rem;margin-top:1.3rem;border:1px solid var(--dark-rule);padding:.35rem .7rem;font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--on-dark-soft)}
.stamp b{color:var(--brass-hi);font-weight:600}

/* layout */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:clamp(2rem,5vw,4rem);padding-block:clamp(2.4rem,5vw,4rem) clamp(3rem,6vw,5rem);align-items:start}
.layout--wide{grid-template-columns:minmax(0,1fr)}
.layout > *{min-width:0}
@media(max-width:940px){.layout{grid-template-columns:minmax(0,1fr)}}

/* prose */
.prose{max-width:72ch;min-width:0}
.prose h2{font-family:"Newsreader",Georgia,serif;font-weight:500;font-size:clamp(1.5rem,3.1vw,2.05rem);line-height:1.15;letter-spacing:-.015em;text-wrap:balance;margin:2.6rem 0 .9rem;padding-bottom:.5rem;border-bottom:1px solid var(--rule)}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.1rem;font-weight:700;letter-spacing:-.005em;margin:2rem 0 .6rem}
.prose h4{font-size:.98rem;font-weight:600;margin:1.5rem 0 .4rem;color:var(--ink-soft)}
.prose p{margin:0 0 1.05rem;color:var(--ink-soft)}
.prose strong{color:var(--ink);font-weight:600}
.prose ul,.prose ol{margin:0 0 1.2rem;padding-left:1.3rem;color:var(--ink-soft)}
.prose li{margin-bottom:.42rem}
.prose li::marker{color:var(--brass)}
.prose a{color:var(--petrol);text-underline-offset:2px}
.prose code{font-family:"IBM Plex Mono",monospace;font-size:.86em;background:var(--surface-alt);padding:.1em .35em}
.table-scroll{overflow-x:auto;border:1px solid var(--rule);background:var(--surface);margin:0 0 1.4rem;box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;min-width:520px}
@media(max-width:560px){table{min-width:460px}}
th{font-family:"IBM Plex Mono",monospace;font-size:.66rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-faint);text-align:left;padding:.75rem .9rem;border-bottom:1px solid var(--rule-strong);background:var(--surface-alt)}
td{padding:.7rem .9rem;border-bottom:1px solid var(--rule);vertical-align:top;font-size:.93rem;color:var(--ink-soft);font-variant-numeric:tabular-nums}
tr:last-child td{border-bottom:none}

/* callouts */
.callout{border:1px solid var(--rule);border-left:3px solid var(--brass);background:var(--surface);padding:1.1rem 1.25rem;margin:0 0 1.4rem;font-size:.95rem}
.callout p{margin:0 0 .6rem;color:var(--ink-soft)}
.callout p:last-child{margin-bottom:0}
.callout ul{margin:0;padding-left:1.2rem;color:var(--ink-soft)}
.callout-title{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.11em;text-transform:uppercase;color:var(--brass);font-weight:600;margin:0 0 .5rem !important}
.callout--check{border-left-color:var(--petrol);background:var(--surface-alt)}
.callout--check .callout-title{color:var(--petrol)}

/* sidebar */
.side{display:flex;flex-direction:column;gap:1.4rem;position:sticky;top:86px}
@media(max-width:940px){.side{position:static}}
.side-card{border:1px solid var(--rule);background:var(--surface);padding:1.15rem 1.25rem;box-shadow:var(--shadow)}
.side-card h2{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 .8rem;font-weight:600}
.side-card ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.side-card li{border-bottom:1px solid var(--rule)}
.side-card li:last-child{border-bottom:none}
.side-card a{display:block;padding:.5rem 0;text-decoration:none;font-size:.9rem;color:var(--ink-soft)}
.side-card a:hover{color:var(--petrol)}
.side-card a[aria-current="page"]{color:var(--ink);font-weight:600}
.side-cta{background:var(--petrol-deep);color:var(--on-dark);border:none;padding:1.3rem 1.35rem}
.side-cta h2{color:var(--brass-hi)}
.side-cta p{color:var(--on-dark-soft);font-size:.9rem;margin:0 0 1rem}
.side-cta .btn{width:100%;text-align:center}
.side-contact{font-size:.88rem;color:var(--ink-soft);margin:0}
.side-contact a{color:var(--petrol)}

/* generic sections */
.section{padding-block:clamp(3rem,6vw,5rem)}
.section--alt{background:var(--surface);border-block:1px solid var(--rule)}
.section--dark{background:var(--petrol-deep);color:var(--on-dark)}
.sec-label{color:var(--brass);margin:0 0 .8rem}
.section--dark .sec-label{color:var(--brass-hi)}
.sec-title{font-family:"Newsreader",Georgia,serif;font-weight:500;font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.12;letter-spacing:-.016em;text-wrap:balance;margin:0 0 .9rem;max-width:22ch}
.sec-intro{color:var(--ink-soft);max-width:60ch;margin:0 0 2.3rem;font-size:1.01rem}
.section--dark .sec-intro{color:var(--on-dark-soft)}

/* index card grids */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule)}
.card{background:var(--ground);padding:1.6rem 1.5rem;display:flex;flex-direction:column;gap:.55rem;text-decoration:none}
.card:hover{background:var(--surface-alt)}
.card .idx{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.1em;color:var(--brass)}
.card h3{margin:0;font-size:1.06rem;font-weight:700;letter-spacing:-.005em;color:var(--ink)}
.card p{margin:0;color:var(--ink-soft);font-size:.93rem}
.card .deliv{margin-top:.3rem;color:var(--ink-faint);font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.07em;text-transform:uppercase}
@media(max-width:940px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.cards{grid-template-columns:1fr}}

/* guide index list */
.guides{display:grid;grid-template-columns:repeat(2,1fr);gap:.4rem 2rem}
.guide{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;padding:.75rem 0;border-bottom:1px solid var(--rule);text-decoration:none;color:var(--ink)}
.guide:hover .guide-name{color:var(--petrol)}
.guide-name{font-size:.97rem;font-weight:500}
.guide-year{font-family:"IBM Plex Mono",monospace;font-size:.64rem;letter-spacing:.08em;color:var(--brass);background:var(--brass-soft);padding:.15rem .4rem;white-space:nowrap}
@media(max-width:700px){.guides{grid-template-columns:1fr}}

/* forms */
.form{display:flex;flex-direction:column;gap:1.15rem;max-width:36rem}
.field{display:flex;flex-direction:column;gap:.35rem}
.field label{font-size:.85rem;font-weight:600}
.field .hint{font-size:.8rem;color:var(--ink-faint)}
.field input,.field select,.field textarea{font-family:inherit;font-size:.95rem;padding:.6rem .7rem;border:1px solid var(--rule-strong);background:var(--surface);color:var(--ink);border-radius:1px}
.field textarea{min-height:7rem;resize:vertical}
.form-note{font-size:.85rem;color:var(--ink-faint);margin:0}
.form-out{border:1px solid var(--rule);background:var(--surface-alt);padding:1.1rem 1.2rem;font-size:.92rem}
.form-out pre{white-space:pre-wrap;font-family:"IBM Plex Mono",monospace;font-size:.8rem;color:var(--ink-soft);margin:.8rem 0 0}
.actions{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center}

/* footer */
.footer{background:var(--surface);border-top:1px solid var(--rule);padding-block:2.6rem 2rem}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:2rem}
.footer h2{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 .8rem;font-weight:600}
.footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.42rem}
.footer a{color:var(--ink-soft);text-decoration:none;font-size:.9rem}
.footer a:hover{color:var(--ink)}
.footer-addr{color:var(--ink-soft);font-size:.9rem;margin:0}
.footer-bottom{margin-top:2.2rem;padding-top:1.2rem;border-top:1px solid var(--rule);display:flex;flex-wrap:wrap;gap:.6rem 1.4rem;color:var(--ink-faint);font-size:.81rem}
@media(max-width:820px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}