:root {
  --ink: #172033;
  --muted: #607089;
  --bg: #f5f8fc;
  --panel: #ffffff;
  --panel-soft: #f0f7ff;
  --line: rgba(23, 32, 51, 0.11);
  --blue: #1d4ed8;
  --cyan: #0891b2;
  --green: #059669;
  --orange: #ea580c;
  --pink: #db2777;
  --shadow: 0 18px 45px rgba(20, 44, 84, 0.12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Inter, system-ui, sans-serif; color: var(--ink); background: linear-gradient(180deg, #f8fbff 0%, var(--bg) 44%, #fff7ed 100%); }
a { color: inherit; text-decoration: none; }
.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 18px; width: min(1400px, calc(100% - 24px)); margin: 12px auto; padding: 10px 12px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255, 255, 255, 0.88); box-shadow: var(--shadow); backdrop-filter: blur(16px); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; }
.brand span { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; color: #fff; background: linear-gradient(135deg, var(--blue), var(--cyan)); font-family: 'Space Grotesk', sans-serif; }
.navlinks { margin-left: auto; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 4px; }
.navlinks a { padding: 9px 11px; border-radius: 999px; color: var(--muted); font-weight: 800; font-size: 0.88rem; }
.navlinks a:hover, .navlinks a.active { color: #fff; background: linear-gradient(135deg, var(--blue), var(--cyan)); }
.menu-toggle { display: none; margin-left: auto; border: 0; border-radius: 999px; padding: 10px 14px; color: #fff; background: var(--blue); font-weight: 900; }
main { width: min(1400px, calc(100% - 24px)); margin: 0 auto; }
.hero, .page-title { margin-top: 26px; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 18px; align-items: stretch; }
.tight-hero { min-height: 430px; }
.compact-hero { grid-template-columns: 1fr; }
.hero-copy, .hero-panel, .info-card, .subject-card, .choice-card, .notice { border: 1px solid var(--line); border-radius: 22px; background: var(--panel); box-shadow: var(--shadow); }
.hero-copy { padding: clamp(28px, 5vw, 54px); display: grid; align-content: center; }
.kicker { margin: 0 0 10px; color: var(--blue); font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase; font-size: 0.76rem; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 900px; margin-bottom: 14px; font-family: 'Space Grotesk', sans-serif; font-size: clamp(2.2rem, 6vw, 4.8rem); line-height: 0.98; }
h2 { margin-bottom: 10px; font-family: 'Space Grotesk', sans-serif; font-size: clamp(1.45rem, 3vw, 2.35rem); }
h3 { margin-bottom: 8px; font-size: 1.08rem; }
p { color: var(--muted); line-height: 1.65; }
.hero-actions, .action-row, .filters { display: flex; flex-wrap: wrap; gap: 10px; }
.btn, .action { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 11px 15px; border-radius: 12px; font-weight: 900; transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease; }
.btn:hover, .action:hover, .choice-card:hover { transform: translateY(-3px); }
.primary { color: #fff; background: linear-gradient(135deg, var(--blue), var(--cyan)); box-shadow: 0 12px 28px rgba(29, 78, 216, 0.22); }
.ghost { color: var(--blue); background: rgba(29, 78, 216, 0.08); border: 1px solid rgba(29, 78, 216, 0.16); }
.small { min-height: 40px; padding: 9px 13px; color: #fff; background: linear-gradient(135deg, var(--green), var(--cyan)); }
.summary-panel { padding: 18px; display: grid; gap: 12px; background: linear-gradient(160deg, rgba(29, 78, 216, 0.10), rgba(5, 150, 105, 0.08)), #fff; }
.stat { display: grid; align-content: center; min-height: 116px; padding: 18px; border-radius: 18px; border: 1px solid var(--line); background: rgba(255,255,255,0.76); }
.stat strong { color: var(--blue); font-size: 2.2rem; line-height: 1; }
.stat span { color: var(--muted); font-weight: 800; }
.page-title { padding: 30px; border-radius: 22px; background: linear-gradient(135deg, rgba(29,78,216,.09), rgba(234,88,12,.07)); border: 1px solid var(--line); }
.page-title p { max-width: 760px; }
.section { margin: 22px 0; }
.section.compact { margin-top: 24px; }
.inline-heading { display: flex; justify-content: space-between; gap: 18px; align-items: end; }
.inline-heading p { max-width: 420px; margin-bottom: 0; }
.cards { display: grid; gap: 16px; }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.info-card, .choice-card, .notice { padding: 22px; }
.choice-card { display: grid; min-height: 210px; align-content: space-between; transition: transform 0.18s ease, box-shadow 0.18s ease; }
.choice-card span, .info-card span { display: inline-grid; place-items: center; width: fit-content; min-width: 48px; height: 36px; padding: 0 12px; border-radius: 999px; color: #fff; background: linear-gradient(135deg, var(--orange), var(--pink)); font-weight: 900; }
.choice-card.legacy span { background: linear-gradient(135deg, var(--green), var(--cyan)); }
.filters { padding: 12px; margin: 14px 0; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,0.72); }
.filters input, .filters select { flex: 1 1 190px; min-height: 46px; border: 1px solid var(--line); border-radius: 12px; padding: 0 12px; font: inherit; background: #fff; color: var(--ink); }
.subject-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.subject-card { padding: 18px; display: grid; gap: 10px; }
.subject-top { display: flex; justify-content: space-between; gap: 10px; align-items: center; }
.subject-top span, .subject-top strong { padding: 7px 10px; border-radius: 999px; color: var(--blue); background: rgba(29,78,216,.08); font-weight: 900; }
.action-row { margin-top: 2px; }
.action { flex: 1 1 130px; color: #fff; font-size: 0.86rem; text-align: center; }
.action.syllabus { background: linear-gradient(135deg, var(--blue), var(--cyan)); }
.action.lessons { background: linear-gradient(135deg, var(--green), var(--cyan)); }
.action.qp { background: linear-gradient(135deg, var(--orange), var(--pink)); }
.action.download { background: linear-gradient(135deg, #059669, #0891b2); }
.link-list { display: grid; gap: 10px; margin-top: 14px; }
.link-list a { padding: 12px 14px; border-radius: 12px; background: var(--panel-soft); color: var(--blue); font-weight: 800; border: 1px solid rgba(29,78,216,.10); }
.notice a { color: var(--blue); font-weight: 900; }
.empty { grid-column: 1 / -1; text-align: center; padding: 24px; color: var(--muted); }
.footer { width: min(1400px, calc(100% - 24px)); margin: 38px auto 18px; display: flex; justify-content: space-between; gap: 14px; padding: 18px; border-radius: 18px; background: rgba(255,255,255,0.82); border: 1px solid var(--line); }
.footer p { margin: 0; }
.footer a { color: var(--blue); font-weight: 800; }