/* SI Step 2 CK — indigo/purple identity, same SI MedEd family structure as the sibling hubs */
:root {
  --navy: #1c2b4a;
  --navy-dark: #131e35;
  --accent: #7b6cf0;
  --accent-dark: #5a4bd1;
  --accent-light: #edeaff;
  --paper: #faf9f6;
  --ink: #232a35;
  --muted: #5b6472;
  --line: #e2e0d8;
  --card: #ffffff;
  --radius: 10px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Source Sans 3", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
}
h1, h2, h3, .serif {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--navy);
  line-height: 1.25;
}
a { color: var(--navy); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 28px; }

/* Utility bar */
.utility-bar { background: var(--navy-dark); color: #aeb8cf; font-size: 13px; padding: 7px 0; }
.utility-bar .wrap { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.utility-bar .fam { color: #8f99b3; letter-spacing: 0.4px; }
.utility-bar a { color: #dbe2f0; text-decoration: none; margin-right: 14px; }
.utility-bar a:hover { color: #fff; text-decoration: underline; }
.utility-bar a.here { color: #fff; font-weight: 700; }

/* Header */
.site-header { background: var(--navy); color: #fff; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 14px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: #fff; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 10px; background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: Georgia, serif; font-weight: bold; font-size: 18px; color: #fff;
  flex: none;
}
.brand-name { font-family: Georgia, serif; font-size: 20px; letter-spacing: 0.2px; }
.brand-sub { font-size: 12px; color: #c9d2e4; letter-spacing: 1.2px; text-transform: uppercase; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  color: #dbe2f0; text-decoration: none; font-size: 15px; padding: 8px 12px;
  border-radius: 6px;
}
.nav a:hover { background: rgba(255,255,255,0.1); color: #fff; }
.nav a.active { background: rgba(255,255,255,0.14); color: #fff; font-weight: 600; }

/* Hero */
.hero { background: var(--navy-dark); color: #eef1f7; padding: 56px 0 48px; }
.hero h1 { color: #fff; font-size: clamp(30px, 4.5vw, 44px); margin: 0 0 12px; }
.hero p.lede { font-size: 19px; color: #c9d2e4; max-width: 720px; margin: 0 0 24px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 8px; font-size: 16px;
  font-weight: 600; text-decoration: none; border: 1px solid transparent; cursor: pointer;
}
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); }
.btn-outline { border-color: #8b96ad; color: #eef1f7; background: transparent; }
.btn-outline:hover { border-color: #fff; color: #fff; }
.edition-note {
  margin-top: 26px; font-size: 14px; color: #9aa5bd; max-width: 720px;
  border-left: 3px solid var(--accent); padding-left: 14px;
}

/* Sections */
.section { padding: 48px 0; }
.section h2 { font-size: 30px; margin: 0 0 8px; }
.section .kicker { text-transform: uppercase; letter-spacing: 1.5px; font-size: 13px; color: var(--accent-dark); font-weight: 700; margin: 0 0 6px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; margin-top: 24px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; text-decoration: none; color: inherit; display: block;
}
.card:hover { border-color: var(--accent); box-shadow: 0 4px 18px rgba(28,43,74,0.08); }
.card h3 { margin: 0 0 8px; font-size: 21px; }
.card p { margin: 0; color: var(--muted); font-size: 15.5px; }
.card .go { color: var(--accent-dark); font-weight: 700; font-size: 15px; margin-top: 12px; display: inline-block; }

/* Stats strip */
.stats-strip { background: #fff; border-bottom: 1px solid var(--line); }
.stats-grid { display: flex; flex-wrap: wrap; gap: 8px 36px; padding-top: 22px; padding-bottom: 22px; }
.stat { display: flex; align-items: baseline; gap: 8px; }
.stat-num { font-size: 30px; font-weight: 800; color: var(--accent-dark); line-height: 1; }
.stat-label { font-size: 14px; color: var(--muted); }
.stat-note { font-size: 12.5px; color: var(--muted); }

/* Prose */
.prose { max-width: 820px; }
.prose p, .prose li { font-size: 17px; color: var(--ink); }
.prose .lede { font-size: 19px; color: var(--muted); }
.prose ul, .prose ol { padding-left: 24px; }
.prose li { margin-bottom: 8px; }
.callout {
  background: var(--accent-light); border: 1px solid #d6d0f7; border-left: 4px solid var(--accent);
  border-radius: 8px; padding: 18px 22px; margin: 24px 0;
}
.callout p { margin: 0 0 8px; }
.callout p:last-child { margin-bottom: 0; }
.callout strong.t { color: var(--accent-dark); }
.caveats { background: #f7f4ec; border: 1px solid #e8e0cd; border-radius: 8px; padding: 18px 22px; margin: 24px 0; font-size: 15px; color: var(--muted); }
.caveats h3 { margin-top: 0; font-size: 18px; color: var(--navy); }
.caveats li { margin-bottom: 6px; }
.sources { font-size: 14px; color: var(--muted); }
.sources li { margin-bottom: 6px; }

/* Tables */
.tbl-wrap { overflow-x: auto; margin: 20px 0; }
table.data { border-collapse: collapse; width: 100%; font-size: 15px; background: #fff; }
table.data th, table.data td { border: 1px solid var(--line); padding: 9px 12px; text-align: center; }
table.data th { background: var(--navy); color: #fff; font-weight: 600; }
table.data th:first-child, table.data td:first-child { text-align: left; }
table.data td.best { background: #f1eefb; font-weight: 700; }
.tbl-caption { font-size: 13.5px; color: var(--muted); margin: 6px 0 20px; }

/* FAQ */
.faq { max-width: 880px; margin-top: 8px; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 10px; background: #fff; }
.faq-item summary {
  cursor: pointer; padding: 15px 20px; font-weight: 700; color: var(--navy); font-size: 16.5px;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--accent-dark); font-size: 22px; font-weight: 400; flex: none; }
.faq-item[open] summary::after { content: "\2013"; }
.faq-item summary:hover { background: #f6f4ee; }
.faq-item > p { padding: 0 20px 18px; margin: 0; color: var(--muted); max-width: 760px; }
.faq-item > ul, .faq-item > ol { margin: 0; padding: 2px 20px 18px 40px; color: var(--muted); }
.faq-item li { margin-bottom: 6px; }

/* Timeline */
.timeline { max-width: 820px; margin-top: 8px; }
.tl-step {
  position: relative; padding: 0 0 30px 40px; border-left: 3px solid var(--accent-light);
  margin-left: 10px;
}
.tl-step:last-child { border-left-color: transparent; padding-bottom: 0; }
.tl-step::before {
  content: ""; position: absolute; left: -11px; top: 4px; width: 19px; height: 19px;
  border-radius: 50%; background: var(--accent); border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--accent-light);
}
.tl-step h3 { margin: 0 0 6px; font-size: 20px; }
.tl-step .tl-when { display: inline-block; font-size: 12.5px; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase; color: var(--accent-dark); background: var(--accent-light); border-radius: 20px; padding: 3px 12px; margin-bottom: 8px; }
.tl-step p { margin: 0 0 8px; color: var(--muted); }

/* Footer */
.site-footer { background: var(--navy-dark); color: #9aa5bd; padding: 36px 0; font-size: 14px; margin-top: 40px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.site-footer a { color: #c9d2e4; }
.site-footer strong { color: #fff; }
.footer-family { margin-top: 14px; font-size: 13px; }
.footer-family a { margin-right: 12px; }

@media (max-width: 640px) {
  .site-header .wrap { flex-direction: column; align-items: flex-start; gap: 10px; }
  .section { padding: 34px 0; }
}