/* QuizMatrix site css — palette tokens replaced by builder (#4F46E5/#3730A3/#1D1B33/#5A5878/#F6F5FF/#E2E0F5) */
:root {
  --acc: #4F46E5;
  --acc-deep: #3730A3;
  --text: #1D1B33;
  --mut: #5A5878;
  --bg: #F6F5FF;
  --border: #E2E0F5;
  --card: #FFFFFF;
  --ok: #1E7A4C;
  --bad: #C03A2B;
  --radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg); color: var(--text);
  font-size: 16px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--acc-deep); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; }
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: 34px; font-weight: 800; }
h2 { font-size: 26px; font-weight: 750; margin: 40px 0 16px; }
h3 { font-size: 19px; font-weight: 700; }

/* ---------- nav ---------- */
.nav { background: var(--card); border-bottom: 1px solid var(--border); }
nav.site { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.nav-in { display: flex; align-items: center; justify-content: space-between; gap: 16px;
  min-height: 60px; flex-wrap: wrap; padding: 8px 0; }
.nav-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800;
  font-size: 19px; color: var(--text); }
.nav-logo:hover { text-decoration: none; }
.nav-logo .mark { display: inline-flex; width: 34px; height: 34px; }
.nav-logo .mark svg { width: 34px; height: 34px; }
.nav-links { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a { padding: 8px 12px; border-radius: 8px; font-weight: 600; font-size: 15px;
  color: var(--mut); }
.nav-links a:hover { color: var(--acc-deep); background: color-mix(in srgb, var(--acc) 8%, transparent);
  text-decoration: none; }
.nav-links a.on { color: var(--acc-deep); background: color-mix(in srgb, var(--acc) 12%, transparent); }

/* ---------- layout ---------- */
.wrap { max-width: 880px; margin: 0 auto; padding: 28px 20px 56px; }
.crumbs { font-size: 14px; color: var(--mut); margin-bottom: 20px; display: flex;
  gap: 8px; flex-wrap: wrap; align-items: center; }
.crumbs a { color: var(--mut); }
.crumbs a:hover { color: var(--acc-deep); }
.page-tag { color: var(--mut); font-size: 14px; margin: 8px 0 4px; }

.hero { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 32px; align-items: center;
  background: var(--card); border: 1px solid var(--border); border-radius: 20px;
  padding: 40px; margin-bottom: 36px; }
.hero h1 { margin: 8px 0 12px; }
.hero .kicker { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--acc-deep); background: color-mix(in srgb, var(--acc) 10%, transparent);
  padding: 4px 12px; border-radius: 999px; }
.hero .sub { color: var(--mut); font-size: 17px; max-width: 460px; }
.hero-art { width: 100%; height: auto; display: block; }
.hero-actions { display: flex; gap: 12px; margin-top: 20px; flex-wrap: wrap; }

.sect { background: var(--card); border: 1px solid var(--border); border-radius: 20px;
  padding: 32px 36px; margin-bottom: 24px; }
.sect > p, .sect li { max-width: 760px; }
.sect p + p { margin-top: 12px; }
.sect ul, .sect ol { padding-left: 22px; margin-top: 8px; max-width: 760px; }
.sect li + li { margin-top: 6px; }
.lede { font-size: 18px; color: var(--mut); }

/* ---------- zone cards (home) ---------- */
.zones { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 8px; }
.zone { background: var(--card); border: 1px solid var(--border); border-radius: 20px;
  padding: 28px; display: flex; flex-direction: column; gap: 14px; }
.zone img { width: 100%; height: auto; border-radius: 14px; display: block; }
.zone h2 { margin: 0; }
.zone p { color: var(--mut); }
.zone .zlist { display: flex; flex-direction: column; gap: 8px; }
.zone .zlist a { display: block; padding: 10px 14px; border: 1px solid var(--border);
  border-radius: 10px; font-weight: 600; }
.zone .zlist a:hover { border-color: var(--acc); background: color-mix(in srgb, var(--acc) 6%, transparent);
  text-decoration: none; }

/* ---------- quiz stage ---------- */
.qz { background: var(--card); border: 1px solid var(--border); border-radius: 20px;
  padding: 32px 36px; margin: 28px 0; }
.qz-intro h2 { margin-top: 0; }
.qz-intro p { color: var(--mut); max-width: 760px; }
.qz-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.qz-chip { font-size: 13px; font-weight: 700; color: var(--acc-deep);
  background: color-mix(in srgb, var(--acc) 10%, transparent); padding: 4px 12px;
  border-radius: 999px; }

.rounds { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px; margin-top: 18px; }
.round-btn { text-align: left; padding: 12px 16px; border: 1px solid var(--border);
  background: var(--card); border-radius: 10px; font-weight: 650; font-size: 15px;
  color: var(--text); cursor: pointer; transition: border-color 160ms ease, background 160ms ease; }
.round-btn:hover { border-color: var(--acc); background: color-mix(in srgb, var(--acc) 6%, transparent); }
.round-btn:active { transform: scale(0.985); }

.qz-progress { height: 8px; background: var(--border); border-radius: 999px;
  overflow: hidden; margin-bottom: 24px; }
.qz-progress-in { height: 100%; width: 0%; background: var(--acc); border-radius: 999px;
  transition: width 220ms ease; }
.qz-count { font-size: 14px; font-weight: 700; color: var(--mut); margin-bottom: 10px; }
.qz-q { font-size: 22px; font-weight: 750; margin-bottom: 20px; max-width: 760px; }
.qz-opts { display: grid; gap: 10px; }
.qz-opt { text-align: left; padding: 14px 18px; border: 1.5px solid var(--border);
  background: var(--card); border-radius: 12px; font-size: 16px; font-weight: 600;
  color: var(--text); cursor: pointer; display: flex; align-items: baseline; gap: 12px;
  transition: border-color 140ms ease, background 140ms ease; }
.qz-opt .k { flex: none; font-size: 12px; font-weight: 800; color: var(--mut);
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  padding: 2px 7px; min-width: 22px; text-align: center; }
.qz-opt:hover { border-color: var(--acc); background: color-mix(in srgb, var(--acc) 6%, transparent); }
.qz-opt:active { transform: scale(0.99); }
.qz-opt.locked { cursor: default; opacity: 0.55; }
.qz-opt.correct { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 10%, transparent); opacity: 1; }
.qz-opt.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 10%, transparent); }

.qz-fact { min-height: 96px; margin-top: 18px; border: 1px dashed var(--border);
  border-radius: 12px; padding: 14px 18px; display: flex; align-items: center;
  gap: 12px; color: var(--mut); font-size: 15px; }
.qz-fact b { color: var(--text); }
.qz-fact .dot { flex: none; width: 10px; height: 10px; border-radius: 50%;
  background: var(--border); }
.qz-fact.show .dot { background: var(--ok); }
.qz-nextrow { display: flex; justify-content: flex-end; margin-top: 16px; min-height: 44px; }

/* ---------- result ---------- */
.qz-result { text-align: center; }
.qz-result .badge { width: 120px; height: 120px; margin: 8px auto 16px; display: block; }
.qz-result .badge svg { width: 120px; height: 120px; }
.qz-result .r-kicker { font-size: 13px; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--mut); }
.qz-result h2 { margin: 6px 0 12px; }
.qz-result .r-blurb { color: var(--mut); max-width: 640px; margin: 0 auto; text-align: left; }
.qz-score { font-size: 30px; font-weight: 800; color: var(--acc-deep); margin: 4px 0 8px; }
.r-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 24px; }
.r-more { margin-top: 24px; color: var(--mut); font-size: 14px; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 10px; font-weight: 700; font-size: 15px;
  cursor: pointer; border: 1.5px solid transparent; text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease; }
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(0.98); }
.btn.primary { background: var(--acc); color: #fff; }
.btn.primary:hover { background: var(--acc-deep); }
.btn.ghost { background: transparent; color: var(--acc-deep); border-color: var(--acc); }
.btn.ghost:hover { background: color-mix(in srgb, var(--acc) 8%, transparent); }
.btn:focus-visible, .qz-opt:focus-visible, .round-btn:focus-visible,
.nav-links a:focus-visible, .rel:focus-visible { outline: 3px solid var(--acc);
  outline-offset: 2px; }

/* copy button double-state overlay (no layout shift, 30.1) */
.copybtn { position: relative; }
.copybtn .st { display: inline-grid; }
.copybtn .st > span { grid-area: 1 / 1; transition: opacity 150ms ease, transform 150ms ease; }
.copybtn .st .s2 { opacity: 0; transform: translateY(4px); }
.copybtn.done .st .s1 { opacity: 0; transform: translateY(-4px); }
.copybtn.done .st .s2 { opacity: 1; transform: translateY(0); }

/* ---------- faq ---------- */
.faq .qa { border-top: 1px solid var(--border); padding: 16px 0; }
.faq .qa:last-child { border-bottom: 1px solid var(--border); }
.faq h3 { margin-bottom: 6px; }
.faq p { color: var(--mut); max-width: 760px; }

/* ---------- related ---------- */
.relgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px; }
.rel { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px;
  background: var(--card); border: 1px solid var(--border); border-radius: 12px; }
.rel:hover { border-color: var(--acc); text-decoration: none; }
.rel b { color: var(--text); font-size: 16px; }
.rel span { color: var(--mut); font-size: 14px; }

/* ---------- data tables / infographics ---------- */
.tbl-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tbl { width: 100%; min-width: 640px; border-collapse: collapse; font-size: 14px; }
.tbl thead th { text-align: left; font-size: 13px; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--mut); padding: 10px 14px;
  border-bottom: 2px solid var(--border); white-space: nowrap; }
.tbl tbody th, .tbl tbody td { padding: 10px 14px; border-bottom: 1px solid var(--border);
  text-align: left; vertical-align: top; }
.tbl tbody th { font-weight: 650; color: var(--text); white-space: nowrap; }
.tbl tbody td { color: var(--text); }
.tbl tbody tr:last-child th, .tbl tbody tr:last-child td { border-bottom: none; }
.tbl a { color: var(--acc-deep); font-weight: 650; }
.tbl a:hover { text-decoration: underline; }
.ig-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.ig { display: block; width: 100%; min-width: 720px; height: auto; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--border); background: var(--card); margin-top: 48px; }
.foot-in { max-width: 1080px; margin: 0 auto; padding: 36px 20px 24px;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 28px; }
.foot-brand .mark { display: inline-flex; width: 30px; height: 30px; vertical-align: -8px; margin-right: 8px; }
.foot-brand svg { width: 30px; height: 30px; }
.foot-brand { font-weight: 800; font-size: 18px; }
.foot-brand p { font-weight: 400; font-size: 14px; color: var(--mut); margin-top: 10px;
  max-width: 420px; }
.foot-col h4 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--mut); margin-bottom: 10px; }
.foot-col a { display: block; padding: 4px 0; font-size: 15px; color: var(--text); }
.foot-col a:hover { color: var(--acc-deep); }
.foot-legal { max-width: 1080px; margin: 0 auto; padding: 16px 20px 28px;
  font-size: 13px; color: var(--mut); border-top: 1px solid var(--border); }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 28px; gap: 16px; }
  .hero .sub { max-width: none; }
  .zones { grid-template-columns: 1fr; }
  .foot-in { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 480px) {
  h1 { font-size: 30px; }
  h2 { font-size: 23px; }
  .wrap { padding: 20px 16px 44px; }
  .sect { padding: 24px 20px; }
  .qz { padding: 22px 18px; }
  .hero { padding: 20px 16px; border-radius: 16px; gap: 12px; }
  .hero h1 { margin: 4px 0 8px; }
  .hero-actions { margin-top: 12px; }
  .qz-q { font-size: 19px; }
  .qz-opt { padding: 13px 14px; font-size: 15px; }
  .btn { padding: 12px 18px; }
  .r-actions { flex-direction: column; align-items: stretch; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important; }
  html { scroll-behavior: auto; }
  .copybtn .st > span, .copybtn.done .st > span { transition: none; }
}