:root{
  --paper:#FAFAF8; --ink:#16222E; --navy:#1E3A5F; --navy-deep:#16304E;
  --amber:#DD9A33; --amber-soft:#F6E7CB; --line:#D9DEE3; --muted:#51616F;
  --sheet:#FFFFFF; --focus:#1E3A5F;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);
  font:400 17px/1.65 Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3{font-family:Poppins,Inter,sans-serif;line-height:1.18;color:var(--navy-deep);margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.6vw,3.1rem);font-weight:700}
h2{font-size:clamp(1.45rem,2.8vw,2rem);font-weight:650}
h3{font-size:1.14rem;font-weight:600;color:var(--ink)}
p{margin:0 0 1em;max-width:70ch}
a{color:var(--navy);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--navy-deep)}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:2px}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:800px}

/* ---- header ---- */
.topbar{background:var(--sheet);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.topbar .wrap{display:flex;align-items:center;gap:26px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:Poppins,sans-serif;font-weight:700;font-size:1.22rem;color:var(--navy-deep);text-decoration:none}
.brand img{width:34px;height:34px}
nav.main{margin-left:auto;display:flex;gap:22px;align-items:center;flex-wrap:wrap}
nav.main a{font-size:.95rem;font-weight:500;text-decoration:none;color:var(--ink);padding:6px 0;border-bottom:2px solid transparent}
nav.main a:hover{border-bottom-color:var(--amber)}
nav.main a[aria-current="page"]{border-bottom-color:var(--navy)}
.btn{display:inline-block;background:var(--navy);color:#fff;font-weight:600;font-size:.98rem;
  padding:11px 22px;border-radius:6px;text-decoration:none;border:1px solid var(--navy)}
.btn:hover{background:var(--navy-deep);color:#fff}
.btn.amber{background:var(--amber);border-color:var(--amber);color:#201403}
.btn.amber:hover{background:#C8871F;border-color:#C8871F}
.btn.ghost{background:transparent;color:var(--navy)}
.btn.ghost:hover{background:var(--navy);color:#fff}
.menu-toggle{display:none}
@media(max-width:860px){
  .topbar .wrap{flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
  nav.main{width:100%;gap:14px;order:3;padding-bottom:4px;overflow-x:auto}
}

/* ---- bearing rule: hairline annotated like a boundary course ---- */
.bearing{display:flex;align-items:center;gap:14px;margin:56px 0 18px;color:var(--muted);
  font-size:.78rem;letter-spacing:.04em;white-space:nowrap}
.bearing::before,.bearing::after{content:"";height:1px;background:var(--line);flex:1}
.bearing b{font-weight:500;color:var(--muted)}

/* ---- sheet frame: image framed like a plat sheet with corner ticks ---- */
.sheet{position:relative;background:var(--sheet);border:1px solid var(--line);padding:14px}
.sheet::before,.sheet::after,
.sheet .tick::before,.sheet .tick::after{content:"";position:absolute;width:16px;height:16px;border-color:var(--navy);border-style:solid}
.sheet::before{top:-1px;left:-1px;border-width:2px 0 0 2px}
.sheet::after{top:-1px;right:-1px;border-width:2px 2px 0 0}
.sheet .tick::before{bottom:-1px;left:-1px;border-width:0 0 2px 2px}
.sheet .tick::after{bottom:-1px;right:-1px;border-width:0 2px 2px 0}
.sheet figcaption{font-size:.85rem;color:var(--muted);padding-top:10px}

/* ---- hero ---- */
.hero{padding:64px 0 30px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:52px;align-items:center}
.hero p.lead{font-size:1.16rem;color:var(--ink);max-width:56ch}
.hero .sub{color:var(--muted);font-size:.98rem}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 14px}
.hero figure.sheet img{max-height:520px;width:auto;margin:0 auto;object-fit:contain}
.underline-amber{box-shadow:inset 0 -0.34em 0 var(--amber-soft)}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr;gap:34px}}

/* ---- legend table (deliverables, specs) ---- */
table.legend{width:100%;border-collapse:collapse;background:var(--sheet);border:1px solid var(--line);font-size:.97rem;margin:18px 0 26px}
table.legend caption{text-align:left;font-family:Poppins,sans-serif;font-weight:600;padding:0 0 10px;color:var(--navy-deep)}
table.legend th,table.legend td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
table.legend th{background:#F2F4F6;font-weight:600;width:230px;color:var(--navy-deep)}
@media(max-width:640px){table.legend th{width:auto}}

/* ---- ruled rows (instead of card grids) ---- */
.rows{border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:260px 1fr;gap:26px;padding:26px 0;border-bottom:1px solid var(--line)}
.row h3{margin:0}
.row h3 a{text-decoration:none;color:var(--navy-deep)}
.row h3 a:hover{color:var(--navy);text-decoration:underline}
.row p{margin:0;color:var(--ink)}
.row .tag{color:var(--muted);font-size:.86rem;margin-top:4px}
@media(max-width:720px){.row{grid-template-columns:1fr;gap:8px}}

/* ---- numbered process (a real sequence) ---- */
ol.process{counter-reset:step;list-style:none;margin:18px 0;padding:0;max-width:72ch}
ol.process li{counter-increment:step;position:relative;padding:0 0 22px 56px}
ol.process li::before{content:counter(step);position:absolute;left:0;top:0;width:34px;height:34px;
  border:1.5px solid var(--navy);border-radius:50%;display:grid;place-items:center;
  font-family:Poppins,sans-serif;font-weight:600;color:var(--navy)}
ol.process li::after{content:"";position:absolute;left:17px;top:38px;bottom:4px;width:1px;background:var(--line)}
ol.process li:last-child::after{display:none}
ol.process b{display:block;color:var(--navy-deep)}

/* ---- FAQ ---- */
details.faq{border:1px solid var(--line);background:var(--sheet);margin:0 0 10px}
details.faq summary{cursor:pointer;font-weight:600;padding:15px 18px;color:var(--navy-deep);list-style:none;display:flex;justify-content:space-between;gap:12px}
details.faq summary::after{content:"+";color:var(--amber);font-weight:700;font-size:1.2rem;line-height:1}
details.faq[open] summary::after{content:"\2212"}
details.faq .a{padding:0 18px 16px;color:var(--ink)}
details.faq .a p{margin-bottom:.6em}

/* ---- CTA band ---- */
.cta-band{background:var(--navy-deep);color:#EAF0F6;margin-top:70px}
.cta-band .wrap{padding:54px 20px;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center}
.cta-band h2{color:#fff}
.cta-band p{color:#C6D2DF;margin:0;max-width:60ch}
@media(max-width:780px){.cta-band .wrap{grid-template-columns:1fr}}

/* ---- footer ---- */
footer{background:#10243C;color:#B9C6D4;font-size:.92rem}
footer .wrap{padding:44px 20px 30px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
footer h3{color:#fff;font-size:.98rem;margin-bottom:.7em}
footer a{color:#D5DEE8;text-decoration:none}
footer a:hover{color:#fff;text-decoration:underline}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin:0 0 .55em}
footer .fine{border-top:1px solid #23405F;margin-top:10px}
footer .fine .wrap{display:block;padding:16px 20px;color:#8FA2B5}
@media(max-width:860px){footer .wrap{grid-template-columns:1fr 1fr}}
@media(max-width:520px){footer .wrap{grid-template-columns:1fr}}

/* ---- misc ---- */
.breadcrumbs{font-size:.86rem;color:var(--muted);padding:22px 0 0}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs span{color:var(--ink)}
section.block{padding:34px 0 6px}
ul.checks{list-style:none;padding:0;margin:0 0 1em;max-width:72ch}
ul.checks li{padding:4px 0 4px 28px;position:relative}
ul.checks li::before{content:"";position:absolute;left:2px;top:12px;width:12px;height:7px;
  border-left:2px solid var(--amber);border-bottom:2px solid var(--amber);transform:rotate(-45deg)}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:26px;margin:26px 0}
.note{border-left:3px solid var(--amber);background:var(--sheet);padding:14px 18px;margin:18px 0;max-width:72ch}
.note p{margin:0}
article.post p,article.post li{max-width:72ch}
article.post h2{margin-top:1.6em}
article.post .meta{color:var(--muted);font-size:.92rem;margin-bottom:28px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:40px}
@media(max-width:800px){.two-col{grid-template-columns:1fr}}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;z-index:100}
.skip:focus{left:10px;top:10px}