* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--color-ink); line-height: 1.5; background: #fff; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.site-header { border-bottom: 4px solid var(--color-primary); }
.header-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 18px 24px 0; flex-wrap: wrap; }
.header-logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.3rem; color: var(--color-ink); letter-spacing: 0.5px; padding-bottom: 18px; }
.logo-mark { font-size: 1.5rem; }
.header-top { display: flex; justify-content: flex-end; gap: 20px; padding: 10px 24px 0; max-width: 1200px; margin: 0 auto; font-size: 0.85rem; }
.header-top a { color: var(--color-primary); font-weight: 700; }
.header-top a:hover { text-decoration: underline; }

.header-nav { display: flex; align-items: stretch; width: 100%; border-top: 1px solid var(--color-border); margin-top: 4px; }
.nav-item { position: relative; }
.nav-link { display: block; padding: 14px 18px; font-weight: 600; font-size: 0.95rem; color: var(--color-ink); }
.nav-link.active, .nav-item:first-child .nav-link { background: var(--color-primary); color: #fff; }
.nav-item:hover .nav-link:not(.active) { background: var(--color-surface); }
.nav-dropdown { display: none; position: absolute; top: 100%; left: 0; background: #fff; border: 1px solid var(--color-border); min-width: 220px; box-shadow: 0 8px 16px rgba(0,0,0,0.08); z-index: 10; }
.nav-item:hover .nav-dropdown { display: block; }
.nav-dropdown a { display: block; padding: 10px 18px; font-size: 0.88rem; border-bottom: 1px solid var(--color-border); }
.nav-dropdown a:last-child { border-bottom: none; }
.nav-dropdown a:hover { background: var(--color-surface); }
.search-box { margin-left: auto; padding: 8px 12px; border: 1px solid var(--color-border); font-size: 0.85rem; width: 160px; }

.hero { display: grid; grid-template-columns: 1fr 1fr; height: 340px; }
.hero-copy { background: var(--color-primary); color: #fff; display: flex; flex-direction: column; justify-content: center; padding: 40px 50px; }
.hero-copy h1 { font-size: 2.6rem; line-height: 1.1; font-weight: 800; text-transform: uppercase; margin-bottom: 16px; }
.hero-copy p { font-size: 1.05rem; opacity: 0.95; }
.hero-media { height: 100%; overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; display: block; }

.section-wrap { max-width: 1200px; margin: 0 auto; padding: 48px 24px; display: grid; grid-template-columns: 2fr 1fr; gap: 40px; }
.section-title { font-size: 1.5rem; font-weight: 800; margin-bottom: 16px; }
.who-we-are p { color: var(--color-ink-soft); margin-bottom: 14px; }

.cta-stack { display: flex; flex-direction: column; gap: 10px; }
.cta-block { background: var(--color-gray-block); color: #fff; font-weight: 800; font-size: 1.1rem; padding: 22px 20px; }
.cta-block:hover { background: var(--color-gray-block-dark); }

.feature-photo img { width: 100%; max-width: 1200px; height: 380px; object-fit: cover; margin: 0 auto; display: block; }

.icon-grid { max-width: 1200px; margin: 0 auto; padding: 48px 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; text-align: center; }
.icon-card .icon-circle { width: 90px; height: 90px; border-radius: 50%; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 2.2rem; margin: 0 auto 18px; }
.icon-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.icon-card p { color: var(--color-ink-soft); font-size: 0.92rem; }
.icon-card a { color: var(--color-primary); font-weight: 700; }

.page-hero { background: var(--color-surface); padding: 48px 24px; text-align: center; }
.page-hero h1 { font-size: 2.2rem; font-weight: 800; }

.content-wrap { max-width: 900px; margin: 0 auto; padding: 48px 24px; }
.content-wrap h2 { font-size: 1.4rem; margin: 28px 0 12px; }
.content-wrap p { color: var(--color-ink-soft); margin-bottom: 14px; }
.content-wrap ul { margin: 0 0 14px 0; }
.content-wrap li { color: var(--color-ink-soft); padding: 4px 0; }

.course-grid, .grid-3 { max-width: 1200px; margin: 0 auto; padding: 0 24px 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.course-card { border: 1px solid var(--color-border); }
.course-card img { height: 180px; width: 100%; object-fit: cover; }
.course-body { padding: 18px; }
.course-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.course-body p { color: var(--color-ink-soft); font-size: 0.92rem; margin-bottom: 10px; }
.course-meta { font-size: 0.8rem; color: var(--color-primary); font-weight: 700; }

.instructor-grid { max-width: 1200px; margin: 0 auto; padding: 0 24px 48px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.instructor-card { text-align: center; }
.instructor-card img { border-radius: 50%; width: 160px; height: 160px; object-fit: cover; margin: 0 auto 16px; }
.instructor-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.instructor-card p { color: var(--color-ink-soft); font-size: 0.88rem; }

.contact-form { max-width: 600px; margin: 0 auto; padding: 48px 24px; }
.contact-form label { display: block; font-weight: 700; margin: 14px 0 6px; font-size: 0.9rem; }
.contact-form input, .contact-form textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--color-border); font-size: 0.95rem; }
.contact-form button { margin-top: 20px; background: var(--color-primary); color: #fff; border: none; padding: 14px 32px; font-weight: 700; font-size: 1rem; cursor: pointer; }
.contact-info { max-width: 600px; margin: 0 auto 20px; padding: 0 24px; color: var(--color-ink-soft); }

.site-footer { background: #2A2A2A; color: #ccc; margin-top: 40px; }
.footer-nav-inner { max-width: 1200px; margin: 0 auto; padding: 48px 24px; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; }
.footer-inner { max-width: 900px; margin: 0 auto; padding: 24px; text-align: center; }
.footer-col h4 { color: #fff; margin-bottom: 14px; font-size: 0.95rem; }
.footer-col a { display: block; color: #aaa; padding: 5px 0; font-size: 0.88rem; }
.footer-col a:hover { color: #fff; }
.footer-logo { color: #fff; font-weight: 800; font-size: 1.1rem; display: block; margin-bottom: 10px; }
.footer-col p { color: #999; font-size: 0.85rem; }
.footer-bottom { border-top: 1px solid #444; text-align: center; padding: 18px; font-size: 0.82rem; color: #888; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; height: auto; }
  .hero-media { height: 220px; }
  .section-wrap { grid-template-columns: 1fr; }
  .icon-grid, .course-grid, .grid-3 { grid-template-columns: 1fr; }
  .instructor-grid { grid-template-columns: 1fr; }
  .footer-nav-inner { grid-template-columns: 1fr 1fr; }
  .header-nav { flex-wrap: wrap; }
}