:root {
  --primary: #0b5d6b;
  --primary-dark: #073e48;
  --accent: #0f8a72;
  --bg: #f4f7f8;
  --surface: #ffffff;
  --border: #dde6e8;
  --text: #1c2b30;
  --text-muted: #5b6d72;
  --low: #1b7a4f;
  --low-bg: #e6f3ec;
  --mod: #96660a;
  --mod-bg: #faf1de;
  --high: #ab3a2c;
  --high-bg: #fbe9e6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); }
a:hover { color: var(--primary-dark); }

.site-header {
  background: var(--surface);
  border-bottom: 3px solid var(--primary);
}
.site-header-inner {
  max-width: 760px; margin: 0 auto; padding: 16px 20px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px;
}
.site-header .brand {
  font-weight: 800; font-size: 1.05rem; color: var(--primary-dark); text-decoration: none;
  display: flex; align-items: center; gap: 8px;
}
.site-header .brand .cross {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 5px; background: var(--primary); color: #fff;
  font-size: 14px; font-weight: 900; line-height: 1;
}
.site-nav { display: flex; gap: 18px; }
.site-nav a { color: var(--text-muted); text-decoration: none; font-size: 0.92rem; font-weight: 600; }
.site-nav a:hover { color: var(--primary); }

.wrap { max-width: 720px; margin: 0 auto; padding: 40px 20px 80px; }

.crumb { font-size: 13px; font-weight: 700; text-decoration: none; color: var(--text-muted); }
.crumb:hover { color: var(--primary); }

h1 { font-size: clamp(1.6rem, 4.5vw, 2.3rem); font-weight: 800; margin: 18px 0 14px; line-height: 1.25; color: var(--primary-dark); }
h2 { font-size: 1.2rem; font-weight: 800; margin: 34px 0 12px; color: var(--primary-dark); }
p, li { color: var(--text); line-height: 1.7; font-size: 0.98rem; }
ul { padding-left: 20px; }
.lede { font-size: 1.05rem; line-height: 1.7; color: var(--text); }

.updated { font-size: 12px; color: var(--text-muted); margin-bottom: 26px; display: block; }
.meta { font-size: 12.5px; color: var(--text-muted); margin-top: 10px; }

.disclaimer {
  background: var(--low-bg);
  border: 1px solid #c8e2d3;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 26px 0;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text);
}
.disclaimer strong { color: var(--primary-dark); }

.cta {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 15px;
  border: none;
  cursor: pointer;
  font-family: inherit;
}
.cta:hover { background: var(--primary-dark); color: #fff; }

.grid { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 16px; }
.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 1px 2px rgba(15, 40, 45, 0.06);
  padding: 16px 18px;
  text-decoration: none;
  color: var(--text);
}
.card:hover { border-color: var(--primary); }
.card b { display: block; margin-bottom: 4px; color: var(--primary); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.03em; }
.card span { color: var(--text-muted); font-size: 0.9rem; }

.box {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 18px 20px; margin: 24px 0; box-shadow: 0 1px 2px rgba(15, 40, 45, 0.05);
}

footer.site-footer {
  max-width: 720px; margin: 60px auto 0; padding: 20px 20px 40px;
  font-size: 12px; color: var(--text-muted); border-top: 1px solid var(--border);
}
footer.site-footer a { color: var(--text-muted); }

/* Quiz-specific */
.bar-track { background: var(--border); border-radius: 999px; height: 8px; margin: 22px 0 30px; overflow: hidden; }
.bar-fill { background: var(--accent); height: 100%; width: 0%; transition: width 0.25s ease; }
.qnum { font-size: 12.5px; color: var(--text-muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; }
.qtext { font-size: 1.3rem; font-weight: 800; line-height: 1.35; margin: 10px 0 26px; min-height: 2.6em; color: var(--primary-dark); }
.options { display: grid; gap: 10px; }
.opt {
  text-align: left; background: var(--surface); border: 1px solid var(--border);
  color: var(--text); padding: 15px 18px; border-radius: 8px; font-size: 15px; cursor: pointer; font-family: inherit;
}
.opt:hover { background: var(--low-bg); border-color: var(--accent); }
.options.fresh .opt:hover { background: var(--surface); border-color: var(--border); }
.opt:disabled { opacity: 0.55; cursor: default; }
.opt-selected { border-color: var(--primary) !important; background: var(--low-bg) !important; font-weight: 700; opacity: 1 !important; }
.nav-row { display: flex; justify-content: space-between; margin-top: 26px; }
.navbtn {
  background: var(--surface); border: 1px solid var(--border); color: var(--text-muted); padding: 10px 18px;
  border-radius: 8px; font-size: 13px; cursor: pointer; font-family: inherit;
}
.navbtn:hover { border-color: var(--primary); color: var(--primary); }
.navbtn:disabled { opacity: 0.4; cursor: default; }

.tier-badge { display: inline-block; padding: 6px 16px; border-radius: 6px; font-weight: 800; font-size: 13px; margin-bottom: 14px; }
.tier-low { background: var(--low-bg); color: var(--low); }
.tier-mod { background: var(--mod-bg); color: var(--mod); }
.tier-high { background: var(--high-bg); color: var(--high); }
.score { font-size: 0.85rem; color: var(--text-muted); margin-top: 6px; }