/* GIScademy — shared stylesheet. No external resources: system fonts only,
   decorative background uses a data: URI (allowed by img-src 'self' data:). */

:root{
  --ink:#16222c;
  --ink-soft:#4b616d;
  --paper:#f8f6f1;
  --panel:#eef2ef;
  --panel-line:#dde4e0;
  --line:#d7ded9;
  --navy:#102430;
  --navy-2:#17384a;
  --on-navy:#eaf2f6;
  --on-navy-soft:#aec6d1;
  --accent:#1c5c73;
  --accent-dark:#123f4f;
  --accent-light:#8fd0e6;
  --accent-soft:#e2edf0;
  --positive:#33603f;
  --positive-soft:#e6f0e8;
  --amber:#7a4e0d;
  --amber-soft:#f4ead9;
  --radius:10px;
  --maxw:1120px;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-serif:Georgia,"Iowan Old Style","Palatino Linotype","Book Antiqua",Palatino,serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --grid-dots:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='36' height='36'%3E%3Ccircle cx='2' cy='2' r='1.5' fill='%231c5c73' fill-opacity='0.16'/%3E%3C/svg%3E");
  --grid-dots-dark:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='36' height='36'%3E%3Ccircle cx='2' cy='2' r='1.5' fill='%238fd0e6' fill-opacity='0.22'/%3E%3C/svg%3E");
}

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.6;
}
img{ max-width:100%; display:block; height:auto; }
h1,h2,h3,h4{
  font-family:var(--font-serif);
  font-weight:600;
  line-height:1.2;
  color:var(--ink);
  margin:0 0 .6em;
}
h1{ font-size:clamp(2rem,4.4vw,2.9rem); }
h2{ font-size:clamp(1.5rem,2.8vw,1.9rem); }
h3{ font-size:1.2rem; }
p{ margin:0 0 1.1em; }
p.lede{ font-size:1.15rem; color:var(--ink-soft); max-width:52ch; }
ul,ol{ padding-left:1.3em; }
li{ margin-bottom:.5em; }
strong{ font-weight:600; }
small,.small{ font-size:.88rem; }
a{ color:var(--accent-dark); text-decoration-thickness:1.5px; text-underline-offset:2px; }
a:hover{ color:var(--accent); }
.mono{ font-family:var(--font-mono); font-variant-numeric:tabular-nums; }

:focus-visible{
  outline:3px solid #b9560a;
  outline-offset:2px;
  border-radius:3px;
}

.skip-link{
  position:absolute; left:-9999px; top:auto;
  background:var(--navy); color:var(--on-navy);
  padding:.8em 1.2em; z-index:100; border-radius:0 0 8px 0;
}
.skip-link:focus{ left:0; top:0; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 24px; }

/* ---------- header ---------- */
.site-header{
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:14px 24px;
  padding:18px 24px;
}
.brand{
  font-family:var(--font-serif); font-weight:700; font-size:1.35rem;
  color:var(--ink); text-decoration:none; letter-spacing:.01em;
}
.brand:hover{ color:var(--accent-dark); }
.main-nav{ flex:1 1 auto; }
.nav-list{
  list-style:none; margin:0; padding:0;
  display:flex; flex-wrap:wrap; gap:6px 26px;
}
.nav-list a{
  color:var(--ink-soft); text-decoration:none; font-size:.98rem;
  padding:6px 2px; border-bottom:2px solid transparent;
}
.nav-list a:hover{ color:var(--ink); border-bottom-color:var(--line); }
.nav-list a[aria-current="page"]{
  color:var(--ink); border-bottom-color:var(--accent);
  font-weight:600;
}
.nav-cta{ flex:none; }

/* ---------- buttons ---------- */
.btn{
  display:inline-block;
  font-family:var(--font-sans); font-weight:600; font-size:.98rem;
  padding:.75em 1.4em; border-radius:8px;
  text-decoration:none; border:1.5px solid transparent;
  cursor:pointer;
}
.btn-primary{ background:var(--accent-dark); color:#fff; }
.btn-primary:hover{ background:var(--navy); color:#fff; }
.btn-secondary{ background:transparent; border-color:var(--accent-dark); color:var(--accent-dark); }
.btn-secondary:hover{ background:var(--accent-soft); }

/* ---------- hero / sections ---------- */
.hero{
  background-color:var(--accent-soft);
  background-image:var(--grid-dots);
  border-bottom:1px solid var(--panel-line);
  padding:72px 0 60px;
}
.hero-dark{
  background-color:var(--navy);
  background-image:var(--grid-dots-dark);
  color:var(--on-navy);
}
.hero-dark h1,.hero-dark h2{ color:#fff; }
.hero-dark p.lede{ color:var(--on-navy-soft); }

section.block{ padding:56px 0; }
section.block-tight{ padding:36px 0; }
.block-alt{ background:var(--panel); border-top:1px solid var(--panel-line); border-bottom:1px solid var(--panel-line); }

.kicker{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono); font-size:.78rem; letter-spacing:.08em;
  text-transform:uppercase; color:var(--accent-dark); font-weight:600;
  margin-bottom:14px;
}
.kicker::before{ content:""; width:20px; height:2px; background:currentColor; display:inline-block; }
.hero-dark .kicker{ color:var(--accent-light); }

.lead-row{ display:flex; gap:48px; flex-wrap:wrap; align-items:flex-start; }
.lead-row > *{ flex:1 1 320px; }

/* ---------- grids / cards ---------- */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:28px; }
@media (max-width:820px){
  .grid-3{ grid-template-columns:1fr; }
  .grid-2{ grid-template-columns:1fr; }
}

.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:26px 24px;
}
.card h3{ margin-bottom:.4em; }

.tier-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:28px 26px; display:flex; flex-direction:column; gap:14px;
}
.tier-card.tier-featured{
  border-color:var(--accent-dark); border-width:2px;
  box-shadow:0 2px 0 var(--accent-dark);
}
.tier-name{ font-family:var(--font-serif); font-size:1.35rem; margin:0; }
.tier-tag{
  font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase;
  letter-spacing:.07em; color:var(--accent-dark); background:var(--accent-soft);
  display:inline-block; padding:3px 10px; border-radius:999px; width:fit-content;
}
.tier-card ul{ margin:0; padding-left:1.15em; }
.tier-card li{ font-size:.96rem; }

/* numbered method steps */
.steps{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:28px; }
.step{ display:flex; gap:22px; align-items:flex-start; }
.step-num{
  flex:none; font-family:var(--font-mono); font-weight:600; font-size:1rem;
  color:var(--accent-dark); background:var(--accent-soft); border-radius:50%;
  width:40px; height:40px; display:flex; align-items:center; justify-content:center;
}
.step h3{ margin-bottom:.25em; }
.step p{ margin:0; color:var(--ink-soft); max-width:62ch; }

/* ---------- tables ---------- */
.table-wrap{ overflow-x:auto; }
table{ border-collapse:collapse; width:100%; }
caption{ text-align:left; font-size:.85rem; color:var(--ink-soft); margin-bottom:8px; }
th,td{ text-align:left; padding:11px 14px; border-bottom:1px solid var(--line); vertical-align:top; }
th{ font-family:var(--font-mono); font-size:.76rem; text-transform:uppercase; letter-spacing:.05em; color:var(--ink-soft); font-weight:600; }
td.num,th.num{ text-align:right; font-family:var(--font-mono); font-variant-numeric:tabular-nums; }
tbody tr:last-child td{ border-bottom:none; }

/* ---------- callouts ---------- */
.callout{
  border-radius:var(--radius); padding:20px 22px; font-size:.98rem; line-height:1.55;
  border:1px solid var(--panel-line);
}
.callout-info{ background:var(--panel); }
.callout-caution{ background:var(--amber-soft); border-color:#e3cfa2; color:var(--amber); }
.callout-positive{ background:var(--positive-soft); border-color:#c3d9c9; color:var(--positive); }
.callout p:last-child{ margin-bottom:0; }
.callout h3{ margin-bottom:.4em; font-size:1.05rem; }

.badge{
  display:inline-block; font-family:var(--font-mono); font-size:.74rem;
  text-transform:uppercase; letter-spacing:.06em; padding:4px 11px; border-radius:999px;
  background:var(--navy); color:var(--on-navy);
}

/* figures / images */
figure{ margin:0; }
figure img{ border:1px solid var(--line); border-radius:var(--radius); }
figcaption{ font-size:.83rem; color:var(--ink-soft); margin-top:8px; }

.source-list{ font-size:.9rem; color:var(--ink-soft); }
.source-list li{ margin-bottom:.35em; }

/* ---------- forms ---------- */
.field{ margin-bottom:22px; }
.field label{ display:block; font-weight:600; margin-bottom:6px; }
.field .hint{ display:block; font-weight:400; font-size:.85rem; color:var(--ink-soft); margin-top:4px; }
input[type="text"],input[type="email"],input[type="tel"],textarea{
  width:100%; font:inherit; padding:.7em .8em; border:1.5px solid var(--line);
  border-radius:8px; background:#fff; color:var(--ink);
}
input:focus,textarea:focus{ border-color:var(--accent); }
textarea{ min-height:150px; resize:vertical; }
.honeypot{ display:none; }
.checkbox-field{ display:flex; gap:10px; align-items:flex-start; }
.checkbox-field input{ margin-top:5px; }
.checkbox-field label{ font-weight:400; }
.required{ color:var(--amber); }
.visually-hidden{
  position:absolute !important; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}
.form-notice{
  border-radius:var(--radius); padding:16px 20px; margin-bottom:26px;
  background:var(--amber-soft); border:1px solid #e3cfa2; color:var(--amber);
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--navy); color:var(--on-navy-soft);
  background-image:var(--grid-dots-dark);
  padding:44px 0 30px; margin-top:64px;
}
.footer-inner{ display:flex; flex-wrap:wrap; gap:24px; justify-content:space-between; align-items:flex-start; }
.footer-brand{ font-family:var(--font-serif); font-weight:700; font-size:1.15rem; color:#fff; }
.footer-links{ list-style:none; margin:10px 0 0; padding:0; display:flex; gap:20px; flex-wrap:wrap; }
.footer-links a{ color:var(--on-navy-soft); text-decoration:none; font-size:.92rem; }
.footer-links a:hover{ color:#fff; }
.footer-note{ font-size:.82rem; max-width:46ch; color:var(--on-navy-soft); }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14); margin-top:28px; padding-top:18px;
  font-size:.8rem; color:var(--on-navy-soft);
}

/* ---------- misc ---------- */
.center{ text-align:center; }
.max-prose{ max-width:68ch; }
hr.rule{ border:none; border-top:1px solid var(--line); margin:2.5em 0; }

/* ---------- utilities (kept deliberately small; CSP forbids style="") ---------- */
.mt-1{ margin-top:10px; }
.mt-2{ margin-top:14px; }
.mt-3{ margin-top:16px; }
.mt-4{ margin-top:18px; }
.mt-5{ margin-top:20px; }
.mt-6{ margin-top:22px; }
.mt-7{ margin-top:24px; }
.mt-8{ margin-top:26px; }
.mt-9{ margin-top:28px; }
.muted{ color:var(--ink-soft); }
.mw-520{ max-width:520px; }
.mw-640{ max-width:640px; }
.mw-680{ max-width:680px; }
.lede-center{ margin-left:auto; margin-right:auto; }
.cta-lede{ margin:0 auto 22px; }
.tier-sub{ color:var(--ink-soft); margin:0; }
.btn-row{ display:flex; gap:16px; flex-wrap:wrap; }
.btn-row-center{ display:flex; gap:16px; flex-wrap:wrap; justify-content:center; }
.btn-secondary-invert{ color:#fff; border-color:#fff; }
.btn-secondary-invert:hover{ background:rgba(255,255,255,.14); }

@media (max-width:600px){
  body{ font-size:16px; }
  .hero{ padding:52px 0 40px; }
  section.block{ padding:40px 0; }
  .lead-row{ gap:32px; }
}