:root {
  --bg: #070914;
  --panel: rgba(255, 255, 255, 0.075);
  --panel-strong: rgba(255, 255, 255, 0.12);
  --text: #f7fbff;
  --muted: #b5bfd5;
  --line: rgba(255, 255, 255, 0.18);
  --cyan: #67e8f9;
  --violet: #a78bfa;
  --green: #86efac;
  --pink: #f0abfc;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(103, 232, 249, 0.20), transparent 34rem),
    radial-gradient(circle at top right, rgba(167, 139, 250, 0.20), transparent 30rem),
    linear-gradient(135deg, #060815 0%, #0c1025 52%, #111827 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.34;
  background-image:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: 78vh;
  padding: 26px 0 64px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  z-index: 2;
}

.brand, .feedback-top, .feedback-button, .course-card {
  color: inherit;
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(103, 232, 249, 0.18), rgba(167, 139, 250, 0.22));
  box-shadow: var(--shadow);
}

.brand-text { font-size: 1.1rem; }

.feedback-top {
  padding: 10px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-weight: 650;
  transition: 180ms ease;
}

.feedback-top:hover { color: var(--text); background: rgba(255,255,255,0.12); transform: translateY(-1px); }

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: clamp(60px, 11vw, 122px);
  text-align: center;
}

.eyebrow, .section-kicker {
  margin: 0 0 14px;
  color: var(--cyan);
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 8vw, 7.6rem);
  line-height: 0.9;
  letter-spacing: -0.08em;
  text-wrap: balance;
}

.subtitle {
  max-width: 760px;
  margin: 28px auto 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  line-height: 1.7;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin: 52px auto 0;
  max-width: 940px;
}

.course-card {
  position: relative;
  overflow: hidden;
  min-height: 310px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 34px;
  text-align: left;
  background: linear-gradient(145deg, rgba(255,255,255,0.13), rgba(255,255,255,0.055));
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
  transition: transform 220ms ease, border-color 220ms ease, background 220ms ease;
}

.course-card:hover {
  transform: translateY(-7px) scale(1.01);
  border-color: rgba(255,255,255,0.34);
  background: linear-gradient(145deg, rgba(255,255,255,0.17), rgba(255,255,255,0.075));
}

.card-glow {
  position: absolute;
  inset: auto -22% -42% -22%;
  height: 70%;
  filter: blur(44px);
  opacity: 0.56;
  transition: opacity 220ms ease;
}

.course-card:hover .card-glow { opacity: 0.88; }
.physiology .card-glow { background: radial-gradient(circle, rgba(134,239,172,0.75), transparent 62%); }
.microbiology .card-glow { background: radial-gradient(circle, rgba(240,171,252,0.72), transparent 62%); }

.course-icon {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 90px;
  height: 90px;
  display: grid;
  place-items: center;
  border-radius: 28px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.075);
}

.course-icon svg {
  width: 56px;
  height: 56px;
  fill: none;
  stroke: currentColor;
  stroke-width: 3.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.92;
}

.physiology .course-icon { color: var(--green); }
.microbiology .course-icon { color: var(--pink); }

.course-label {
  position: relative;
  z-index: 1;
  font-size: clamp(2rem, 4vw, 3.3rem);
  font-weight: 900;
  letter-spacing: -0.06em;
}

.course-copy {
  position: relative;
  z-index: 1;
  max-width: 390px;
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.55;
}

.launch {
  position: relative;
  z-index: 1;
  margin-top: 26px;
  display: inline-flex;
  gap: 7px;
  align-items: center;
  color: var(--text);
  font-weight: 850;
}

.mission, .contact {
  margin: 26px 0;
}

.mission-card, .contact {
  border: 1px solid var(--line);
  border-radius: 34px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.mission-card {
  padding: clamp(28px, 5vw, 54px);
  text-align: center;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.mission-card p:not(.section-kicker), .contact p {
  max-width: 780px;
  margin: 20px auto 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.75;
}

.democracy-line {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 34px;
}

.democracy-line span {
  padding: 18px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 20px;
  background: rgba(255,255,255,0.06);
  font-weight: 850;
}

.contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(26px, 4vw, 42px);
}

.contact h2 { font-size: clamp(1.8rem, 3vw, 3rem); }
.contact p { margin-left: 0; }

.feedback-button {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  color: #07111f;
  box-shadow: 0 18px 38px rgba(103, 232, 249, 0.18);
  transition: transform 180ms ease, filter 180ms ease;
}

.feedback-button:hover { transform: translateY(-2px); filter: brightness(1.08); }

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 30px 2px 44px;
  color: rgba(255,255,255,0.58);
  font-size: 0.92rem;
}

.footer p { margin: 0; }

.aurora {
  position: absolute;
  border-radius: 999px;
  filter: blur(60px);
  opacity: 0.45;
  pointer-events: none;
}

.aurora-one {
  width: 300px;
  height: 300px;
  left: -120px;
  top: 150px;
  background: var(--cyan);
  animation: float 9s ease-in-out infinite;
}

.aurora-two {
  width: 360px;
  height: 360px;
  right: -160px;
  top: 260px;
  background: var(--violet);
  animation: float 11s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(22px, -28px, 0) scale(1.06); }
}

@media (max-width: 780px) {
  .page-shell { width: min(100% - 22px, 1180px); }
  .course-grid, .democracy-line { grid-template-columns: 1fr; }
  .course-card { min-height: 270px; border-radius: 28px; }
  .course-icon { width: 76px; height: 76px; border-radius: 22px; }
  .course-icon svg { width: 48px; height: 48px; }
  .contact { flex-direction: column; align-items: flex-start; }
  .feedback-button { width: 100%; }
  .footer { flex-direction: column; align-items: flex-start; }
}