:root {
  --blue: #0073e6;
  --blue-dark: #064b8f;
  --green: #00d084;
  --green-dark: #087653;
  --ink: #162331;
  --muted: #5d6975;
  --line: #dbe4ec;
  --surface: #f6f8fa;
  --warm: #fff4d8;
  --shadow: 0 18px 45px rgba(9, 56, 101, .10);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #fff; font-family: 'Open Sans', system-ui, sans-serif; line-height: 1.6; }
h1, h2, h3 { margin: 0; font-family: 'Montserrat', system-ui, sans-serif; line-height: 1.15; }
p { margin: 0; }
a { color: inherit; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 1rem; top: 1rem; z-index: 100; background: #fff; padding: .75rem 1rem; }
.wrap { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.97); border-bottom: 1px solid rgba(219,228,236,.9); backdrop-filter: blur(14px); }
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand img { display: block; width: auto; height: 44px; }
.nav-links { display: flex; align-items: center; gap: 1.35rem; font-size: .92rem; font-weight: 700; }
.nav-links a { text-decoration: none; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--blue); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .78rem 1.15rem; border: 0; border-radius: 10px; background: var(--blue); color: #fff; font: 700 .95rem 'Open Sans', sans-serif; text-decoration: none; box-shadow: 0 10px 24px rgba(0,115,230,.20); }
.button.secondary { background: var(--green); color: #052e21; box-shadow: none; }
.button.disabled { background: #c9d3dc; color: #50606e; box-shadow: none; cursor: not-allowed; }
.breadcrumb { padding-top: 1.2rem; color: var(--muted); font-size: .88rem; }
.breadcrumb a { color: var(--blue-dark); }
.hero { padding: 38px 0 76px; background: radial-gradient(circle at 82% 20%,rgba(0,208,132,.20),transparent 30%), radial-gradient(circle at 18% 88%,rgba(0,115,230,.18),transparent 34%), linear-gradient(135deg,#f8fbff 0%,#fff 55%,#effcf7 100%); }
.hero-grid { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(320px,.85fr); gap: 56px; align-items: center; }
.eyebrow { margin-top: .9rem; color: var(--blue); font-size: .82rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.status { display: inline-flex; padding: .34rem .7rem; border-radius: 999px; background: var(--warm); color: #7b5300; border: 1px solid #efd99a; font-size: .78rem; font-weight: 700; }
.hero h1 { margin: .75rem 0 1.1rem; max-width: 800px; font-size: clamp(2.35rem,5vw,4.35rem); color: var(--blue-dark); }
.hero-lead { max-width: 760px; color: #334454; font-size: clamp(1.06rem,2vw,1.25rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.7rem; }
.course-visual { overflow: hidden; border: 1px solid rgba(219,228,236,.9); border-radius: 20px; background: #fff; box-shadow: var(--shadow); }
.course-visual img { display: block; width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.facts { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: .8rem; margin: -34px auto 0; position: relative; z-index: 2; }
.fact { padding: 1rem 1.1rem; border: 1px solid var(--line); border-top: 4px solid var(--green); border-radius: 14px; background: #fff; box-shadow: var(--shadow); }
.fact span { display: block; color: var(--muted); font-size: .8rem; }
.fact strong { display: block; margin-top: .2rem; color: var(--blue-dark); }
section { padding: 72px 0; }
.pale { background: var(--surface); }
.kicker { margin-bottom: .55rem; color: var(--blue); font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.section-title { max-width: 830px; color: var(--blue-dark); font-size: clamp(1.85rem,3.4vw,2.65rem); }
.section-intro { max-width: 820px; margin-top: 1rem; color: var(--muted); font-size: 1.05rem; }
.card-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; margin-top: 2rem; }
.card { padding: 1.45rem; background: #fff; border: 1px solid var(--line); border-radius: 15px; }
.card h3 { margin-bottom: .45rem; color: var(--blue-dark); font-size: 1.04rem; }
.card p { color: var(--muted); }
.fit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-top: 2rem; }
.fit-card { padding: 1.6rem; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.fit-card.highlight { background: #e9fbf4; }
.fit-card h3 { margin-bottom: .8rem; color: var(--blue-dark); font-size: 1.15rem; }
.clean-list { margin: 0; padding-left: 1.2rem; }
.clean-list li { margin: .45rem 0; }
.curriculum { margin-top: 2rem; max-width: 960px; }
.module { margin-bottom: .8rem; border: 1px solid var(--line); border-radius: 14px; background: #fff; overflow: hidden; }
.module summary { display: flex; align-items: baseline; gap: .9rem; padding: 1.15rem 1.3rem; cursor: pointer; color: var(--blue-dark); font-weight: 700; }
.module-number { flex: 0 0 auto; color: var(--blue); font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; }
.module-body { padding: 0 1.3rem 1.3rem; color: var(--muted); }
.official { display: grid; grid-template-columns: minmax(0,1fr) 340px; gap: 2.2rem; align-items: start; }
.official-box { padding: 1.55rem; border-radius: 16px; background: var(--blue-dark); color: #fff; }
.official-box h3 { margin-bottom: .75rem; }
.official-box ul { margin: 0; padding-left: 1.15rem; }
.official-box li { margin: .45rem 0; }
.source-link { display: inline-block; margin-top: 1.1rem; color: var(--blue-dark); font-weight: 700; }
.faq { max-width: 900px; margin-top: 2rem; }
.faq details { border-top: 1px solid var(--line); padding: 1rem 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; color: var(--blue-dark); font-weight: 700; }
.faq p { margin-top: .65rem; color: var(--muted); }
.final-cta { padding: 3rem 0; background: #063a68; color: #fff; }
.final-row { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.final-row h2 { max-width: 720px; font-size: clamp(1.6rem,3vw,2.35rem); }
.site-footer { padding: 1.7rem 0; background: #042b4e; color: #fff; }
.footer-row { display: flex; justify-content: space-between; gap: 1rem; font-size: .86rem; }
.footer-row a { color: #fff; }
@media (max-width: 860px) {
  .nav-links a:not(.button) { display: none; }
  .hero-grid, .official { grid-template-columns: 1fr; gap: 2rem; }
  .facts { grid-template-columns: repeat(2,minmax(0,1fr)); margin-top: 1.2rem; }
  .card-grid, .fit-grid { grid-template-columns: 1fr; }
  .final-row { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 520px) {
  .wrap { width: min(100% - 28px,1160px); }
  .brand img { height: 38px; }
  .nav-links .button { min-height: 42px; padding: .65rem .8rem; font-size: .8rem; }
  .hero { padding-bottom: 50px; }
  .hero h1 { font-size: 2.25rem; }
  .facts { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .footer-row { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }