:root {
  --brand: #A50034;
  --ink: #1e293b;
  --muted: #64748b;
  --bg: #f8fafc;
  --card: #ffffff;
  --line: #e2e8f0;
  --ok: #059669;
  --warn: #b45309;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.65 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}
header.hero {
  background: linear-gradient(135deg, #22030d 0%, var(--brand) 100%);
  color: #fff; padding: 48px 24px 42px;
}
.wrap { max-width: 980px; margin: 0 auto; padding: 0 8px; }
.hero h1 { margin: 0 0 6px; font-size: 32px; letter-spacing: .02em; }
.hero p.sub { margin: 0; opacity: .85; font-size: 18px; }
.hero .badges { margin-top: 18px; display: flex; gap: 8px; flex-wrap: wrap; }
.hero .badge {
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.25);
  padding: 4px 12px; border-radius: 999px; font-size: 13px; letter-spacing: .06em;
}
.hero a.back { color: #fff; opacity: .75; text-decoration: none; font-size: 14px; display: inline-block; margin-bottom: 14px; }
.hero a.back:hover { opacity: 1; }
main { padding: 40px 24px 80px; }
h2 { font-size: 26px; margin: 48px 0 8px; }
h3 { font-size: 20px; margin: 40px 0 6px; color: var(--brand); }
.lead { color: var(--muted); margin-top: 0; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 20px 24px; margin: 16px 0;
}
.path { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; margin-top: 18px; }
a.session {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px;
  display: flex; flex-direction: column; gap: 6px; text-decoration: none; color: inherit;
  transition: box-shadow .15s, transform .15s;
}
a.session:hover { box-shadow: 0 8px 24px -10px rgba(165,0,52,.35); transform: translateY(-2px); }
.session .num { font-size: 12px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; }
.session .title { font-weight: 700; font-size: 17px; }
.session .meta { font-size: 13px; color: var(--muted); }
.session .state { font-size: 12px; font-weight: 700; letter-spacing: .08em; color: var(--brand); }
figure { margin: 22px 0; }
figure img {
  width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--line);
  box-shadow: 0 10px 30px -14px rgba(15,23,42,.25); display: block;
}
figcaption { font-size: 14px; color: var(--muted); margin-top: 10px; }
figcaption b { color: var(--ink); }
.step-no {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 999px; background: var(--brand); color: #fff;
  font-weight: 700; font-size: 15px; margin-right: 10px; flex: none;
}
.callout { border-left: 4px solid var(--brand); background: #fdf2f6; border-radius: 0 12px 12px 0; padding: 14px 18px; margin: 18px 0; }
.callout.tip { border-color: var(--ok); background: #ecfdf5; }
.callout.warn { border-color: var(--warn); background: #fffbeb; }
.callout .t { font-weight: 700; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 4px; }
.callout.tip .t { color: var(--ok); }
.callout.warn .t { color: var(--warn); }
.callout .t.brand { color: var(--brand); }
ul.clean { padding-left: 20px; }
ul.clean li { margin: 6px 0; }
kbd, code {
  background: #f1f5f9; border: 1px solid var(--line); border-radius: 6px;
  padding: 1px 7px; font-size: 14px; font-family: ui-monospace, "SF Mono", Menlo, monospace;
}
.ex li { margin: 10px 0; }
footer { border-top: 1px solid var(--line); margin-top: 60px; padding: 24px; color: var(--muted); font-size: 14px; }
.pill { display: inline-block; padding: 1px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: .06em; }
.pill.draft { background: #f1f5f9; color: #475569; border: 1px solid var(--line); }
.pill.verified { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.pill.validated { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
table.roles { width: 100%; border-collapse: collapse; font-size: 15px; }
table.roles th, table.roles td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.roles th { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
nav.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 48px; }
nav.pager a {
  flex: 1; background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 18px; text-decoration: none; color: inherit; font-size: 15px;
}
nav.pager a:hover { border-color: var(--brand); }
nav.pager .dir { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); display: block; }
nav.pager a.next { text-align: right; }

/* ---------- interactive layer (app.js) ---------- */
.mc-overlay {
  position: fixed; inset: 0; z-index: 1000; background: rgba(15,23,42,.66);
  backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; padding: 20px;
}
.mc-modal {
  background: #fff; border-radius: 20px; padding: 32px 36px; max-width: 440px; width: 100%;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,.4);
}
.mc-modal-badge { font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--brand); margin-bottom: 8px; }
.mc-modal h2 { margin: 0 0 8px; font-size: 24px; }
.mc-modal p { color: var(--muted); margin: 0 0 16px; font-size: 15px; }
.mc-modal input {
  width: 100%; font-size: 17px; padding: 12px 14px; border: 2px solid var(--line); border-radius: 12px;
  outline: none; margin-bottom: 6px;
}
.mc-modal input:focus { border-color: var(--brand); }
.mc-modal .mc-hint { font-size: 12.5px; margin-bottom: 14px; }
.mc-modal button {
  width: 100%; background: var(--brand); color: #fff; border: 0; border-radius: 12px;
  padding: 13px; font-size: 16px; font-weight: 700; cursor: pointer;
}
.mc-modal button:disabled { opacity: .4; cursor: default; }
.mc-chip {
  margin-top: 18px; display: inline-flex; align-items: center; gap: 12px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25);
  border-radius: 999px; padding: 6px 16px; font-size: 13.5px;
}
.mc-chip-bar { width: 120px; height: 7px; border-radius: 999px; background: rgba(255,255,255,.25); overflow: hidden; display: inline-block; }
.mc-chip-bar span { display: block; height: 100%; background: #fff; border-radius: 999px; transition: width .3s; }
.mc-chip-pct { font-weight: 700; }
.mc-badge {
  align-self: flex-start; margin-top: 4px; font-size: 11.5px; font-weight: 700; letter-spacing: .06em;
  padding: 2px 10px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); background: #f8fafc;
}
.mc-badge.done { color: #047857; background: #ecfdf5; border-color: #a7f3d0; }
.mc-badge.seen { color: #1d4ed8; background: #eff6ff; border-color: #bfdbfe; }
.mc-quiz-card { border-style: dashed; }
.mc-complete { margin-top: 40px; }
.mc-complete-btn {
  background: #fff; border: 2px solid var(--brand); color: var(--brand); border-radius: 12px;
  padding: 12px 22px; font-size: 15.5px; font-weight: 700; cursor: pointer;
}
.mc-complete-btn.done { background: #ecfdf5; border-color: #a7f3d0; color: #047857; }
.mc-complete-hint { margin-left: 12px; font-size: 13px; color: var(--muted); }

/* ---------- quiz ---------- */
.quiz-q { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px 24px; margin: 14px 0; }
.quiz-q h4 { margin: 0 0 12px; font-size: 16.5px; }
.quiz-q h4 .qn { color: var(--brand); margin-right: 8px; }
.quiz-q label {
  display: flex; gap: 10px; align-items: flex-start; padding: 9px 12px; border: 1px solid var(--line);
  border-radius: 10px; margin: 7px 0; cursor: pointer; font-size: 15px; transition: border-color .12s;
}
.quiz-q label:hover { border-color: var(--brand); }
.quiz-q input { margin-top: 3px; }
.quiz-q.correct { border-color: #a7f3d0; background: #f0fdf9; }
.quiz-q.wrong { border-color: #fecaca; background: #fff5f5; }
.quiz-q .explain { font-size: 14px; color: var(--muted); border-top: 1px dashed var(--line); margin-top: 10px; padding-top: 10px; display: none; }
.quiz-q.graded .explain { display: block; }
.quiz-q.graded label { cursor: default; }
.quiz-q.graded label.right { border-color: #10b981; background: #ecfdf5; }
.quiz-q.graded label.picked-wrong { border-color: #f43f5e; background: #fff1f2; }
.quiz-submit {
  background: var(--brand); color: #fff; border: 0; border-radius: 14px; padding: 15px 34px;
  font-size: 17px; font-weight: 700; cursor: pointer; margin: 22px 0;
}
.quiz-submit:disabled { opacity: .4; cursor: default; }
.quiz-result { border-radius: 16px; padding: 24px 28px; margin: 20px 0; font-size: 17px; }
.quiz-result.pass { background: #ecfdf5; border: 2px solid #10b981; }
.quiz-result.fail { background: #fff1f2; border: 2px solid #f43f5e; }

/* ---------- certificate ---------- */
.cert {
  background: #fff; border: 3px double var(--brand); border-radius: 8px; padding: 56px 64px;
  max-width: 860px; margin: 40px auto; text-align: center; position: relative;
}
.cert .cert-brand { font-size: 13px; letter-spacing: .3em; text-transform: uppercase; color: var(--brand); font-weight: 700; }
.cert h1 { font-size: 34px; margin: 18px 0 4px; }
.cert .cert-sub { color: var(--muted); font-size: 15px; }
.cert .cert-name { font-size: 30px; font-weight: 700; margin: 30px 0 6px; color: var(--brand); }
.cert .cert-text { font-size: 16px; max-width: 560px; margin: 0 auto 26px; color: var(--ink); }
.cert .cert-meta { display: flex; justify-content: center; gap: 40px; font-size: 14px; color: var(--muted); margin-top: 30px; }
.cert .cert-meta b { display: block; color: var(--ink); font-size: 16px; }
.cert .cert-topics { text-align: left; max-width: 620px; margin: 24px auto 0; font-size: 13.5px; color: var(--muted); columns: 2; }
.cert-actions { text-align: center; margin: 24px 0 60px; }
.cert-actions button {
  background: var(--brand); color: #fff; border: 0; border-radius: 12px; padding: 13px 28px;
  font-size: 16px; font-weight: 700; cursor: pointer; margin: 0 6px;
}
.cert-actions a { color: var(--muted); font-size: 14px; margin: 0 10px; }
@media print {
  header.hero, .cert-actions, footer, .mc-chip { display: none !important; }
  body { background: #fff; }
  .cert { border-radius: 0; margin: 0; max-width: none; page-break-inside: avoid; }
}