*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Ubuntu', 'Titillium Web', -apple-system, sans-serif;
  color: #1e293b;
  background: #f8fafc;
  line-height: 1.6;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6,
.nav__link, .btn, .logo,
.hero__title, .hero__subtitle, .hero__label, .hero__stat-num,
.section__title, .section__desc, .section__label,
.card__title, .card__cat, .card__price, .card__tag,
.breadcrumb, .footer h4,
.cart-item__name, .cart-item__cat, .cart-item__price,
.cart-summary__row--total, .cart-total__row,
.faq-question, .faq-question button,
.benefit__num, .how-step, .how-step__num,
.checkout-form label, .form-group label {
  font-family: 'Titillium Web', 'Ubuntu', sans-serif;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.anim { opacity: 0; }
.anim--show { animation: fadeUp 0.5s ease forwards; }
.anim-d1 { animation-delay: 0.08s; }
.anim-d2 { animation-delay: 0.16s; }
.anim-d3 { animation-delay: 0.24s; }
.anim-d4 { animation-delay: 0.32s; }
.anim-d5 { animation-delay: 0.40s; }
.anim-d6 { animation-delay: 0.48s; }

.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: #1e3a5f;
  transition: background 0.3s, box-shadow 0.3s;
}
.header--scrolled { box-shadow: 0 4px 24px rgba(30,58,95,0.25); }
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 22px; font-weight: 800; color: #fff;
  letter-spacing: -0.5px;
}
.logo span { color: #93c5fd; font-weight: 900; }
.logo img { display:block; max-height:56px; width:auto; }
.logo--footer img { max-height:44px; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav__link {
  font-size: 14px; font-weight: 600;
  color: rgba(255,255,255,0.85);
  padding: 8px 14px; border-radius: 8px;
  transition: all 0.2s; white-space: nowrap;
}
.nav__link:hover, .nav__link--active {
  background: rgba(255,255,255,0.12); color: #fff;
}
.nav__toggle { display: none; }

@media (max-width: 900px) {
  .nav__toggle { display: flex; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 8px; }
  .nav__toggle span { display: block; width: 22px; height: 2px; border-radius: 2px; background: #fff; transition: 0.3s; }
  .nav {
    position: fixed; top: 0; right: -100%; width: 300px; height: 100vh;
    background: #fff; flex-direction: column; padding: 80px 24px 24px;
    transition: right 0.3s; box-shadow: -4px 0 20px rgba(0,0,0,0.1); align-items: stretch;
  }
  .nav--open { right: 0; }
  .nav__close { display: block; position: absolute; top: 16px; right: 16px; background: none; border: none; font-size: 32px; color: #64748b; cursor: pointer; }
  .nav__link { color: #334155; padding: 12px 16px; font-size: 16px; }
  .nav__link--active, .nav__link:hover { background: #dbeafe; color: #1e3a5f; }
}

.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #3b82f6 100%);
  color: #fff; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -40%; right: -15%;
  width: 500px; height: 500px; border-radius: 50%;
  background: rgba(147,197,253,0.08);
}
.hero__inner { display: flex; align-items: center; gap: 40px; position: relative; z-index: 1; }
.hero__content { flex: 1; }
.hero__label {
  display: inline-block; padding: 6px 16px;
  background: rgba(147,197,253,0.2);
  border-radius: 50px; font-size: 13px; font-weight: 700; color: #93c5fd; margin-bottom: 20px;
}
.hero__title { font-size: 42px; font-weight: 900; line-height: 1.15; margin-bottom: 16px; }
.hero__title span { color: #93c5fd; }
.hero__subtitle { font-size: 18px; color: rgba(255,255,255,0.85); line-height: 1.7; margin-bottom: 28px; max-width: 600px; }
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero__stats { display: flex; gap: 40px; margin-top: 40px; }
.stat { text-align: center; }
.stat__number { display: block; font-size: 30px; font-weight: 900; color: #fff; }
.stat__label { font-size: 13px; color: rgba(255,255,255,0.65); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: 12px;
  font-family: 'Titillium Web', sans-serif; font-size: 15px; font-weight: 700;
  border: none; cursor: pointer; transition: all 0.25s; white-space: nowrap;
}
.btn--primary { background: #fff; color: #1e3a5f; }
.btn--primary:hover { background: #dbeafe; transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,0,0,0.12); }
.btn--outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
.btn--outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.btn--whatsapp { background: #25D366; color: #fff; }
.btn--whatsapp:hover { background: #20bd5a; transform: translateY(-2px); }
.btn--lg { padding: 16px 36px; font-size: 16px; border-radius: 14px; }
.btn--block { display: flex; width: 100%; }

.section { padding: 80px 0; }
.section--gray { background: #f1f5f9; }
.section--white { background: #fff; }
.section--blue { background: linear-gradient(135deg, #1e3a5f, #2563eb); color: #fff; }
.section__header { text-align: center; margin-bottom: 40px; }
.section__title { font-size: 32px; font-weight: 800; color: #1e3a5f; line-height: 1.2; }
.section--blue .section__title { color: #fff; }
.section__desc { margin-top: 10px; font-size: 16px; color: #475569; max-width: 600px; margin-left: auto; margin-right: auto; }
.section--blue .section__desc { color: rgba(255,255,255,0.8); }

.offer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.offer-card {
  background: #fff; border-radius: 16px; padding: 28px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  border: 1px solid #e2e8f0;
  transition: all 0.3s;
}
.offer-card:hover { box-shadow: 0 10px 30px rgba(30,58,95,0.1); transform: translateY(-4px); }
.offer-card__icon { font-size: 32px; margin-bottom: 14px; color: #2563eb; }
.offer-card h3 { font-size: 18px; font-weight: 700; color: #1e3a5f; margin-bottom: 8px; }
.offer-card p { font-size: 14px; color: #475569; line-height: 1.6; }
.offer-card__badge {
  display: inline-block; padding: 3px 10px; background: #dbeafe; border-radius: 50px;
  font-size: 12px; font-weight: 700; color: #1e3a5f; margin-top: 10px;
}

.benefits { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }
.benefit {
  background: rgba(255,255,255,0.08); padding: 24px; border-radius: 14px; text-align: center;
  border: 1px solid rgba(255,255,255,0.1);
}
.benefit__num { display: block; font-size: 28px; font-weight: 900; color: #93c5fd; }
.benefit p { font-size: 14px; color: rgba(255,255,255,0.75); margin-top: 4px; }

.how-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }
.how-step {
  background: #fff; padding: 24px; border-radius: 14px; text-align: center;
  border: 1px solid #e2e8f0; transition: all 0.3s;
}
.how-step:hover { box-shadow: 0 8px 24px rgba(30,58,95,0.08); }
.how-step__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 12px; background: #dbeafe;
  font-size: 20px; font-weight: 900; color: #1e3a5f; margin-bottom: 10px;
}
.how-step p { font-size: 14px; color: #475569; margin-top: 4px; }

.program-item {
  background: #fff; border-radius: 14px; padding: 20px 24px; margin-bottom: 12px;
  border: 1px solid #e2e8f0; transition: all 0.3s;
}
.program-item:hover { border-color: #93c5fd; box-shadow: 0 4px 16px rgba(30,58,95,0.06); }
.program-item h4 { font-size: 15px; font-weight: 700; color: #1e3a5f; }
.program-item p { font-size: 13px; color: #64748b; margin-top: 2px; }
.program-item__meta { display: flex; gap: 12px; margin-top: 8px; flex-wrap: wrap; }
.program-item__tag {
  padding: 2px 10px; background: #dbeafe; border-radius: 50px;
  font-size: 11px; font-weight: 700; color: #1e3a5f;
}

.footer {
  background: #0f172a; color: rgba(255,255,255,0.7); padding: 60px 0 0;
}
.footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.footer__col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer__col p, .footer__col a { font-size: 14px; color: rgba(255,255,255,0.55); line-height: 2; display: block; }
.footer__col a:hover { color: #93c5fd; }
.footer__social { display: flex; gap: 12px; margin-top: 16px; }
.footer__social a {
  width: 40px; height: 40px; background: rgba(255,255,255,0.06);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #fff; transition: all 0.2s;
}
.footer__social a:hover { background: #2563eb; }
.footer__bottom { margin-top: 48px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.06); text-align: center; font-size: 13px; color: rgba(255,255,255,0.35); }

.hero--sm { padding: 110px 0 50px; }
.hero--sm .hero__title { font-size: 32px; }
.hero--sm .hero__subtitle { font-size: 16px; }

.whatsapp-float {
  position: fixed; bottom: 24px; right: 24px;
  width: 56px; height: 56px; background: #25D366; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; color: #fff; box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  z-index: 999; transition: all 0.2s;
}
.whatsapp-float:hover { transform: scale(1.1); }

.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; color: rgba(255,255,255,0.5); margin-bottom: 20px; flex-wrap: wrap;
}
.breadcrumb a { color: #93c5fd; transition: opacity 0.2s; }
.breadcrumb a:hover { opacity: 0.7; }

.course-detail-grid { display: grid; grid-template-columns: 1fr 280px; gap: 40px; align-items: start; }
.course-sidebar { position: sticky; top: 100px; }

@media (max-width: 900px) {
  .course-detail-grid { grid-template-columns: 1fr; }
  .course-sidebar { position: static; }
  .filter-buttons { flex-wrap: wrap; }
  .program-item { flex-wrap: wrap; }
}
@media (max-width: 768px) {
  .hero__title { font-size: 30px; }
  .hero__stats { gap: 24px; flex-wrap: wrap; }
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 480px) {
  .section__title { font-size: 24px; }
  .footer__inner { grid-template-columns: 1fr; }
  .offer-grid { grid-template-columns: 1fr; }
  .hero--sm .hero__title { font-size: 22px; }
  .hero--sm { padding: 100px 0 36px; }
  .course-sidebar { padding: 20px; }
  .sidebar-price { font-size: 22px; }
  .container { padding: 0 16px; }
}