/* ============================================================
   Site design system — single source of truth for all pages
   ============================================================ */
:root{
  --bg:#f6f7f9;
  --surface:#ffffff;
  --ink:#16213a;
  --muted:#5c677a;
  --border:#e3e7ee;
  --accent:#1d5fd1;
  --accent-dark:#15489f;
  --accent-soft:#e8f0fe;
  --uk-navy:#16294f;
  --uk-red:#e2231a;
  --teal:#0e8a72;
  --teal-soft:#e4f4f0;
  --warn:#b45309;
  --warn-soft:#fef3e2;
  --danger:#b3261e;
  --danger-soft:#fdecea;
  --success:#1a7f37;
  --radius:12px;
  --shadow:0 1px 3px rgba(22,33,58,.08),0 4px 16px rgba(22,33,58,.06);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.6;font-size:16px}
img{max-width:100%}
a{color:var(--accent)}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- Header / nav ---------- */
.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.nav-wrap{display:flex;align-items:center;gap:18px;height:62px}
.brand{display:flex;align-items:center;text-decoration:none;white-space:nowrap}
/* ---- UK3D Hub staggered wordmark (navy UK · red 3D · navy Hub below) ---- */
.wm{display:inline-flex;flex-direction:column;line-height:.82;text-decoration:none}
.wm-top{font-weight:900;font-size:23px;letter-spacing:-1px}
.wm-uk{color:var(--uk-navy)}
.wm-3d{color:var(--uk-red)}
.wm-hub{align-self:flex-end;font-weight:800;font-size:11.5px;letter-spacing:3.5px;color:var(--uk-navy);margin-top:1px}
.wm--light .wm-uk,.wm--light .wm-hub{color:#fff}
.footer-brand{margin-bottom:2px}
.main-nav{display:flex;gap:2px;flex:1;flex-wrap:wrap}
.main-nav a{padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--muted);font-size:14.5px;font-weight:600}
.main-nav a:hover{background:var(--bg);color:var(--ink)}
.main-nav a.active{background:var(--accent-soft);color:var(--accent-dark)}
.nav-cta{display:flex;gap:10px;align-items:center}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:8px;padding:7px 11px;font-size:17px;cursor:pointer;color:var(--ink)}

/* ---------- Buttons ---------- */
.btn{display:inline-block;padding:10px 18px;border-radius:9px;font-weight:700;font-size:14.5px;text-decoration:none;border:none;cursor:pointer;font-family:var(--font);transition:background .15s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-outline{background:var(--surface);color:var(--accent-dark);border:1.5px solid var(--accent)}
.btn-outline:hover{background:var(--accent-soft)}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover{background:#0a6e5a}
.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}
.btn-ghost:hover{color:var(--ink);background:var(--bg)}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-lg{padding:13px 26px;font-size:16px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- Cards & layout ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.section{padding:56px 0}
.section-title{font-size:28px;letter-spacing:-.4px}
.section-sub{color:var(--muted);max-width:640px;margin:0 0 28px}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(160deg,#16213a 0%,#1d3a6e 55%,#15489f 100%);color:#fff;padding:72px 0 64px}
.hero h1{font-size:clamp(30px,4.5vw,46px);letter-spacing:-.8px;max-width:760px}
.hero p{font-size:18px;color:#c6d4ee;max-width:620px;margin:0 0 30px}
.hero .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.hero .btn-outline:hover{background:rgba(255,255,255,.1)}

/* ---------- Badges / pills ---------- */
.pill{display:inline-block;padding:3px 11px;border-radius:99px;font-size:12px;font-weight:700;letter-spacing:.3px}
.pill-blue{background:var(--accent-soft);color:var(--accent-dark)}
.pill-teal{background:var(--teal-soft);color:var(--teal)}
.pill-warn{background:var(--warn-soft);color:var(--warn)}
.pill-grey{background:var(--bg);color:var(--muted);border:1px solid var(--border)}

/* ---------- Forms ---------- */
.field{margin-bottom:16px}
.field label{display:block;font-weight:700;font-size:13.5px;margin-bottom:5px}
.field .hint{font-weight:400;color:var(--muted);font-size:12.5px;margin-top:4px}
.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1.5px solid var(--border);border-radius:8px;font-family:var(--font);font-size:14.5px;background:var(--surface);color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.field textarea{resize:vertical;min-height:80px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.req::after{content:" *";color:var(--danger)}

/* ---------- Notices ---------- */
.notice{border-radius:10px;padding:14px 16px;font-size:14px;margin:18px 0;border:1px solid}
.notice-info{background:var(--accent-soft);border-color:#c4d7f8;color:#173d7a}
.notice-warn{background:var(--warn-soft);border-color:#f3d9ad;color:var(--warn)}
.notice-legal{background:var(--bg);border-color:var(--border);color:var(--muted);font-size:13px}

/* ---------- Tables ---------- */
table.data{width:100%;border-collapse:collapse;font-size:14px}
table.data th{text-align:left;padding:10px 12px;background:var(--bg);border-bottom:2px solid var(--border);font-size:12.5px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
table.data td{padding:10px 12px;border-bottom:1px solid var(--border)}

/* ---------- Footer ---------- */
.site-footer{background:#16213a;color:#9fb0cd;margin-top:64px;padding:44px 0 28px;font-size:14px}
.site-footer h4{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.6px;margin-bottom:12px}
.site-footer a{color:#9fb0cd;text-decoration:none;display:block;padding:3px 0}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:28px}
.footer-legal{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;font-size:12.5px;color:#7286a8}

/* ---------- Utility ---------- */
.muted{color:var(--muted)}
.small{font-size:13px}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.center{text-align:center}
.flex{display:flex;gap:12px;align-items:center}
.spacer{flex:1}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .nav-toggle{display:block;margin-left:auto}
  .main-nav{display:none;position:absolute;top:62px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;padding:10px 16px 16px}
  .main-nav.open{display:flex}
  .nav-cta .btn{display:none}
  .nav-cta .btn.nav-login{display:inline-block}
}