/* Old Guard Technology — shared stylesheet
   Palette sampled from the logo: shield blue #028bc5, check green #42b83f, black ground */

:root {
  --paper:   #f7f8f6;
  --surface: #ffffff;
  --card:    #f0f2ef;
  --border:  #dfe3de;
  --ink:     #0d1117;
  --fg:      #16202b;
  --muted:   #52606f;
  --blue:    #0b6e9e;   /* darkened shield blue — passes AA on white */
  --green:   #42b83f;
  --green-d: #2f8a2c;
  --link:    #0b6e9e;
  --hero-bg: #000000;
  --hero-fg: #ffffff;
  --hero-mu: #b9c3cd;
  --radius:  12px;
  --maxw:    760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:   #0d1117;
    --surface: #121821;
    --card:    #17202b;
    --border:  #263241;
    --fg:      #e7edf3;
    --muted:   #9fb0c0;
    --blue:    #4db3e6;
    --link:    #6cc3ef;
    --green-d: #5fcb5c;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--fg);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); }
a:hover { text-decoration: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }
.wrap-wide { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem; }

/* ---------- site header ---------- */
.site-header {
  background: var(--hero-bg);
  border-bottom: 1px solid #1f2933;
  position: sticky; top: 0; z-index: 20;
}
.site-header .wrap-wide {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  padding-top: .6rem; padding-bottom: .6rem;
}
.brand {
  display: flex; align-items: center; gap: .6rem;
  font-weight: 700; color: var(--hero-fg); text-decoration: none;
  font-size: 1.02rem; letter-spacing: .01em;
}
.brand img { width: 38px; height: 38px; }
.site-nav { margin-left: auto; display: flex; gap: 1.2rem; flex-wrap: wrap; }
.site-nav a {
  color: var(--hero-mu); text-decoration: none; font-size: .95rem; font-weight: 500;
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--hero-fg); }
.site-nav a[aria-current="page"] { box-shadow: 0 2px 0 var(--green); }

/* ---------- hero ---------- */
.hero { background: var(--hero-bg); color: var(--hero-fg); padding: 3.5rem 0 3.5rem; }
.hero-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; align-items: center; }
@media (min-width: 860px) { .hero-grid { grid-template-columns: 1.25fr .75fr; gap: 3rem; } }
.hero h1 {
  font-size: clamp(2rem, 5.2vw, 3rem);
  line-height: 1.12; letter-spacing: -.02em; margin-bottom: 1rem;
}
.hero .lede { font-size: 1.15rem; color: var(--hero-mu); margin-bottom: .8rem; }
.hero .lede strong { color: var(--hero-fg); font-weight: 600; }
.hero-logo { max-width: 320px; margin: 0 auto; }
.hero-small { padding: 2.75rem 0 2.5rem; }
.hero-small h1 { margin-bottom: .5rem; }

/* ---------- buttons ---------- */
.btn-row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin-top: 1.6rem; }
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--green); color: #000;
  padding: .8rem 1.4rem; border-radius: 999px;
  font-weight: 650; text-decoration: none; font-size: 1rem;
  border: 1px solid var(--green); transition: transform .12s ease, opacity .12s ease;
}
.btn:hover { transform: translateY(-1px); opacity: .92; }
.btn-ghost { background: transparent; color: var(--hero-fg); border-color: #3a4652; }
.btn-dark { background: var(--fg); color: var(--paper); border-color: var(--fg); }

/* ---------- sections ---------- */
section { padding: 3rem 0; }
.section-alt { background: var(--surface); border-block: 1px solid var(--border); }
h2 {
  font-size: clamp(1.45rem, 3.4vw, 1.95rem); letter-spacing: -.015em;
  margin-bottom: .6rem; line-height: 1.2;
}
.section-lede { color: var(--muted); margin-bottom: 1.8rem; max-width: 62ch; }
h3 { font-size: 1.12rem; margin-bottom: .35rem; letter-spacing: -.005em; }
p + p { margin-top: .8rem; }

/* ---------- cards ---------- */
.cards { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 760px) { .cards-3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 700px) { .cards-2 { grid-template-columns: 1fr 1fr; } }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.3rem 1.4rem;
  border-top: 3px solid var(--blue);
}
.card:nth-child(2n) { border-top-color: var(--green); }
.card p { color: var(--muted); font-size: .97rem; }

/* ---------- steps ---------- */
.steps { list-style: none; counter-reset: step; display: grid; gap: 1rem; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li {
  counter-increment: step; position: relative;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.3rem 1.4rem 1.3rem 1.4rem;
}
.steps li::before {
  content: counter(step); display: grid; place-items: center;
  width: 30px; height: 30px; border-radius: 50%; margin-bottom: .6rem;
  background: var(--fg); color: var(--paper); font-weight: 700; font-size: .95rem;
}
.steps p { color: var(--muted); font-size: .97rem; }

/* ---------- lists ---------- */
.checks { list-style: none; }
.checks li { padding-left: 1.6rem; position: relative; margin-bottom: .55rem; }
.checks li::before {
  content: "✓"; position: absolute; left: 0; color: var(--green-d); font-weight: 700;
}
.checks li span { color: var(--muted); }

.plain { margin: 0 0 1rem 1.3rem; }
.plain li { margin-bottom: .4rem; }

/* ---------- callout ---------- */
.callout {
  background: var(--card); border: 1px solid var(--border);
  border-left: 4px solid var(--green);
  border-radius: var(--radius); padding: 1.2rem 1.4rem; margin: 1.5rem 0;
}
.callout p { color: var(--muted); }

/* ---------- prose ---------- */
.prose p { margin-bottom: 1rem; }
.prose p + p { margin-top: 0; }
.prose h2 { margin-top: 2.2rem; }
.prose h2:first-child { margin-top: 0; }

.contact-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.6rem;
}
.contact-card .email { font-size: clamp(1.2rem, 4vw, 1.6rem); font-weight: 700; word-break: break-word; }

/* ---------- cta band ---------- */
.cta { background: var(--hero-bg); color: var(--hero-fg); text-align: center; }
.cta p { color: var(--hero-mu); max-width: 56ch; margin: 0 auto; }
.cta .btn-row { justify-content: center; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border); background: var(--surface);
  padding: 2.25rem 0; color: var(--muted); font-size: .92rem;
}
.site-footer .cols { display: grid; gap: 1.5rem; grid-template-columns: 1fr; margin-bottom: 1.4rem; }
@media (min-width: 640px) { .site-footer .cols { grid-template-columns: 2fr 1fr 1fr; } }
.site-footer h4 {
  font-size: .8rem; text-transform: uppercase; letter-spacing: .07em;
  color: var(--fg); margin-bottom: .55rem;
}
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: .35rem; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--fg); text-decoration: underline; }
.site-footer .legal { padding-top: 1.2rem; border-top: 1px solid var(--border); }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--green); color: #000; padding: .6rem 1rem; z-index: 50;
}
.skip:focus { left: .5rem; top: .5rem; }