:root {
  --ink: #243047;
  --muted: #5f6b7a;
  --brand: #4169a8;
  --brand-dark: #243e74;
  --accent: #f4a261;
  --sun: #ffd166;
  --mint: #d8f3dc;
  --soft: #fff7e8;
  --paper: #ffffff;
  --line: #dbe4ee;
  --shadow: 0 20px 45px rgba(36, 48, 71, 0.12);
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #fffdf8 0%, #f6fbff 100%);
  line-height: 1.6;
}
a { color: var(--brand-dark); }
a:hover { color: #1b2b55; }
img { max-width: 100%; height: auto; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff; padding: .75rem; z-index: 99; }
.skip-link:focus { left: 1rem; top: 1rem; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.94); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(219,228,238,.9); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.85rem 0; }
.logo { display: flex; align-items: center; gap: .75rem; text-decoration: none; color: var(--ink); font-weight: 800; letter-spacing: -.02em; }
.logo-mark { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; color: #fff; background: linear-gradient(135deg, var(--brand), #7b2cbf); box-shadow: 0 10px 20px rgba(65,105,168,.22); }
.logo small { display: block; color: var(--muted); font-weight: 600; letter-spacing: normal; font-size: .78rem; margin-top: -3px; }
.nav-toggle { display: none; border: 1px solid var(--line); background: #fff; border-radius: 12px; padding: .55rem .7rem; font-weight: 700; color: var(--ink); }
.site-nav { display: flex; gap: .35rem; align-items: center; }
.site-nav a { color: var(--ink); text-decoration: none; padding: .55rem .75rem; border-radius: 999px; font-weight: 650; font-size: .95rem; }
.site-nav a:hover, .site-nav a[aria-current="page"] { background: #eef5ff; color: var(--brand-dark); }
.cta-link { background: var(--accent) !important; color: #1f2937 !important; }
main { min-height: 60vh; }
.hero { padding: 4.5rem 0 3.25rem; }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 2.5rem; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: .45rem; padding: .35rem .7rem; border: 1px solid #ffd9a5; border-radius: 999px; background: #fff6e6; color: #8a4b08; font-weight: 800; font-size: .86rem; }
h1, h2, h3 { line-height: 1.12; margin: 0 0 1rem; }
h1 { font-size: clamp(2.35rem, 5vw, 4.8rem); letter-spacing: -.055em; }
h2 { font-size: clamp(1.8rem, 3.4vw, 3rem); letter-spacing: -.035em; }
h3 { font-size: 1.22rem; }
.lede { font-size: clamp(1.12rem, 2.4vw, 1.36rem); color: var(--muted); max-width: 64ch; }
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .76rem 1.05rem; border-radius: 999px; border: 2px solid transparent; background: var(--brand); color: #fff; text-decoration: none; font-weight: 800; box-shadow: 0 12px 24px rgba(65,105,168,.18); }
.button:hover { background: var(--brand-dark); color: #fff; }
.button.secondary { background: #fff; color: var(--brand-dark); border-color: var(--line); box-shadow: none; }
.button.secondary:hover { background: #eef5ff; }
.button.soft { background: #fff6e6; color: #8a4b08; box-shadow: none; }
.hero-card { background: var(--paper); border: 1px solid var(--line); border-radius: 34px; padding: 1.2rem; box-shadow: var(--shadow); }
.hero-card img { display: block; border-radius: 26px; }
.quick-facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 2.25rem; }
.fact { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; box-shadow: 0 10px 24px rgba(36,48,71,.07); }
.fact strong { display: block; font-size: 1.05rem; }
.fact span { color: var(--muted); font-size: .93rem; }
.section { padding: 3.4rem 0; }
.section.alt { background: rgba(216,243,220,.36); border-block: 1px solid rgba(183,228,199,.7); }
.section-header { display: flex; justify-content: space-between; gap: 1.5rem; align-items: end; margin-bottom: 1.6rem; }
.section-header p { max-width: 60ch; color: var(--muted); margin: 0; }
.grid { display: grid; gap: 1rem; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; box-shadow: 0 12px 28px rgba(36,48,71,.08); }
.card p:last-child { margin-bottom: 0; }
.card-icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 15px; background: var(--soft); margin-bottom: .8rem; font-size: 1.35rem; }
.page-hero { padding: 3.8rem 0 2.4rem; background: linear-gradient(135deg, #eef5ff 0%, #fff7e8 100%); border-bottom: 1px solid var(--line); }
.breadcrumb { color: var(--muted); font-size: .92rem; margin-bottom: .85rem; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.content-narrow { width: min(860px, calc(100% - 32px)); margin: 0 auto; }
.check-list { padding: 0; margin: 1rem 0 0; list-style: none; }
.check-list li { position: relative; padding-left: 2rem; margin: .58rem 0; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; display: grid; place-items: center; width: 1.35rem; height: 1.35rem; border-radius: 50%; background: var(--mint); color: #1b6b42; font-weight: 900; }
.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 12px 28px rgba(36,48,71,.08); }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: .95rem 1rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #eef5ff; color: var(--brand-dark); font-size: .9rem; text-transform: uppercase; letter-spacing: .04em; }
tr:last-child td { border-bottom: 0; }
.notice { border-left: 5px solid var(--accent); background: #fff8ec; border-radius: 18px; padding: 1rem 1.2rem; margin-top: 1rem; }
.teacher-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.teacher-card { display: grid; gap: .75rem; }
.teacher-head { display: flex; align-items: center; gap: .85rem; }
.avatar { width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; background: linear-gradient(135deg, #ffd166, #f4a261); font-weight: 900; color: #293241; font-size: 1.05rem; flex: 0 0 auto; }
.role { color: var(--brand-dark); font-weight: 800; margin: -.7rem 0 .5rem; }
.faq-list { display: grid; gap: .9rem; }
details { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 1rem 1.1rem; box-shadow: 0 10px 22px rgba(36,48,71,.06); }
summary { cursor: pointer; font-weight: 850; color: var(--brand-dark); }
details p { color: var(--muted); margin-bottom: 0; }
.contact-layout { display: grid; grid-template-columns: .95fr 1.05fr; gap: 1.3rem; align-items: start; }
.form-row { display: grid; gap: .35rem; margin-bottom: .85rem; }
label { font-weight: 800; }
input, textarea { width: 100%; padding: .82rem .9rem; border: 1px solid #cbd5e1; border-radius: 14px; font: inherit; color: var(--ink); background: #fff; }
textarea { min-height: 150px; resize: vertical; }
.footer { padding: 2.4rem 0; background: #243047; color: #e9f0f7; margin-top: 3rem; }
.footer a { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 1.4rem; }
.footer h2, .footer h3 { color: #fff; }
.footer p { color: #cbd5e1; }
.footer small { color: #aebdd0; }
.prototype-note { font-size: .88rem; color: var(--muted); }

@media (max-width: 900px) {
  .hero-grid, .contact-layout, .grid.two { grid-template-columns: 1fr; }
  .quick-facts, .grid.three, .teacher-grid { grid-template-columns: repeat(2, 1fr); }
  .section-header { display: block; }
}
@media (max-width: 700px) {
  .nav-toggle { display: inline-flex; }
  .site-nav { display: none; position: absolute; left: 1rem; right: 1rem; top: 76px; padding: .65rem; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); flex-direction: column; align-items: stretch; }
  .site-nav.open { display: flex; }
  .site-nav a { border-radius: 12px; }
  .quick-facts, .grid.three, .teacher-grid, .footer-grid { grid-template-columns: 1fr; }
  h1 { font-size: 2.55rem; }
  .hero { padding-top: 3rem; }
}