* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #050814;
  --bg2: #080d1d;
  --card: rgba(255, 255, 255, 0.055);
  --card2: rgba(255, 255, 255, 0.085);
  --border: rgba(255, 255, 255, 0.12);
  --text: #f5f7ff;
  --muted: #9aa8c7;
  --cyan: #17d7ff;
  --blue: #3d7cff;
  --purple: #9b5cff;
  --gold: #ffd36a;
  --green: #5dffb2;
  --red: #ff6b6b;
}

body {
  font-family: Inter, Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top, rgba(105, 76, 255, 0.18), transparent 35%),
    radial-gradient(circle at 80% 10%, rgba(0, 217, 255, 0.12), transparent 30%),
    linear-gradient(180deg, #050814, #03050d);
  color: var(--text);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, black, transparent 90%);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  padding: 0 8%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(5, 8, 20, 0.78);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.brand strong {
  color: var(--cyan);
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: var(--cyan);
  background: rgba(23, 215, 255, 0.12);
  box-shadow: 0 0 24px rgba(23, 215, 255, 0.28);
}

.nav nav {
  display: flex;
  gap: 34px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.nav a:hover {
  color: white;
}

button {
  border: none;
  cursor: default;
  font-weight: 800;
  border-radius: 14px;
  padding: 15px 24px;
  color: #00111a;
  background: linear-gradient(135deg, var(--cyan), #00aaff);
  box-shadow: 0 0 30px rgba(23, 215, 255, 0.28);
}

.nav-btn {
  padding: 12px 18px;
}

main {
  width: 100%;
}

section {
  padding: 110px 8%;
  position: relative;
}

.hero {
  min-height: calc(100vh - 72px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, rgba(23, 215, 255, 0.16), rgba(155, 92, 255, 0.13), transparent 65%);
  filter: blur(12px);
  z-index: -1;
}

.badge,
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan);
  background: rgba(23, 215, 255, 0.08);
  border: 1px solid rgba(23, 215, 255, 0.22);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(48px, 8vw, 106px);
  line-height: 0.95;
  letter-spacing: -5px;
  margin-bottom: 30px;
}

.hero h1 span {
  background: linear-gradient(135deg, #ffffff, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  color: transparent;
}

.hero p {
  max-width: 820px;
  font-size: 22px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 38px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 50px;
  flex-wrap: wrap;
  justify-content: center;
}

.secondary {
  color: white;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  box-shadow: none;
}

.hero-tags {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-tags span {
  padding: 12px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255,255,255,0.03);
}

.quote-block {
  text-align: center;
  max-width: 1000px;
  margin: 0 auto;
}

.quote-block h2,
.split h2,
.difference h2,
.engine h2,
.human-systems h2,
.learning-dna h2,
.features h2,
.paths h2,
.instructor-section h2,
.portfolio h2,
.pricing h2,
.rules h2,
.final h2 {
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 22px;
}

.quote-block p,
.section-sub,
.learning-dna p,
.instructor-section p,
.portfolio p,
.final p {
  color: var(--muted);
  font-size: 20px;
  line-height: 1.7;
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.3fr;
  gap: 50px;
  align-items: start;
}

.problem-grid,
.feature-grid,
.systems-grid,
.portfolio-grid,
.pricing-grid,
.rules-grid {
  display: grid;
  gap: 22px;
}

.problem-grid {
  grid-template-columns: repeat(3, 1fr);
}

.card,
.system-card,
.feature-card,
.price-card,
.portfolio-grid div {
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.035));
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 28px;
  box-shadow: 0 20px 80px rgba(0,0,0,0.25);
}

.card span {
  color: var(--cyan);
  font-weight: 900;
}

.card h3,
.system-card h3,
.feature-card h3,
.price-card h3,
.portfolio-grid h3 {
  margin: 16px 0 12px;
  font-size: 23px;
}

.card p,
.system-card p,
.feature-card p,
.price-card p,
.portfolio-grid p,
.price-card li {
  color: var(--muted);
  line-height: 1.6;
}

.difference {
  text-align: center;
}

.compare {
  margin-top: 38px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  text-align: left;
}

.compare-card {
  padding: 34px;
  border-radius: 28px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
}

.compare-card h3 {
  font-size: 28px;
  margin-bottom: 22px;
}

.compare-card ul,
.price-card ul {
  list-style: none;
}

.compare-card li,
.price-card li {
  padding: 11px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.bad h3 {
  color: var(--red);
}

.good h3 {
  color: var(--green);
}

.engine {
  text-align: center;
}

.loop-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 46px;
}

.loop-grid div {
  padding: 26px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
}

.loop-grid span {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: rgba(23, 215, 255, 0.12);
  color: var(--cyan);
  font-weight: 900;
}

.loop-grid h3 {
  margin-bottom: 8px;
}

.loop-grid p {
  color: var(--muted);
  font-size: 14px;
}

.human-systems {
  text-align: center;
}

.systems-grid {
  margin-top: 42px;
  grid-template-columns: repeat(5, 1fr);
}

.learning-dna {
  padding-top: 60px;
  padding-bottom: 60px;
}

.glass-panel {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px;
  border-radius: 34px;
  border: 1px solid rgba(23, 215, 255, 0.2);
  background:
    radial-gradient(circle at top right, rgba(23,215,255,0.16), transparent 40%),
    rgba(255,255,255,0.055);
  box-shadow: 0 0 80px rgba(23,215,255,0.09);
}

.dna-list {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.dna-list span {
  padding: 12px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border);
  color: #dfe8ff;
}

.features {
  text-align: center;
}

.feature-grid {
  margin-top: 44px;
  grid-template-columns: repeat(3, 1fr);
  text-align: left;
}

.paths {
  text-align: center;
}

.path-list {
  max-width: 1050px;
  margin: 42px auto 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.path-card {
  text-align: left;
  min-height: 140px;
  padding: 32px;
  border-radius: 28px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.055);
  overflow: hidden;
  position: relative;
}

.path-card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.16;
  z-index: -1;
}

.path-card h3 {
  font-size: 28px;
  margin-bottom: 8px;
}

.path-card p {
  color: var(--muted);
  max-width: 650px;
}

.path-card span {
  font-size: 44px;
  font-weight: 900;
  color: rgba(255,255,255,0.18);
}

.career::before { background: linear-gradient(135deg, var(--cyan), transparent); }
.school::before { background: linear-gradient(135deg, var(--purple), transparent); }
.brain::before { background: linear-gradient(135deg, #ff4fd8, transparent); }
.general::before { background: linear-gradient(135deg, var(--gold), transparent); }
.book::before { background: linear-gradient(135deg, var(--green), transparent); }

.instructor-section {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 50px;
  align-items: center;
}

.instructor-card {
  border-radius: 34px;
  padding: 34px;
  border: 1px solid rgba(23,215,255,0.2);
  background: linear-gradient(180deg, rgba(23,215,255,0.08), rgba(255,255,255,0.04));
  box-shadow: 0 0 70px rgba(23,215,255,0.08);
}

.avatar {
  width: 100%;
  height: 310px;
  border-radius: 28px;
  background:
    radial-gradient(circle at 50% 25%, rgba(255,255,255,0.28), transparent 18%),
    linear-gradient(180deg, #1b2849, #07101f);
  position: relative;
  margin-bottom: 24px;
}

.avatar::before {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, #d8e9ff, #6799ff);
  top: 48px;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 40px rgba(23,215,255,0.25);
}

.avatar::after {
  content: "";
  position: absolute;
  width: 190px;
  height: 120px;
  border-radius: 80px 80px 20px 20px;
  background: linear-gradient(135deg, #0b65ff, #13e0ff);
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.instructor-card h3 {
  font-size: 28px;
  margin-bottom: 8px;
}

.instructor-card p {
  color: var(--muted);
}

.chat-preview {
  margin-top: 18px;
  padding: 18px;
  border-radius: 18px;
  background: rgba(0,0,0,0.28);
  border: 1px solid var(--border);
}

.chat-preview span {
  color: var(--cyan);
  font-weight: 900;
}

.portfolio {
  text-align: center;
}

.portfolio-grid {
  margin-top: 40px;
  grid-template-columns: repeat(3, 1fr);
}

.pricing {
  text-align: center;
}

.pricing-grid {
  margin-top: 44px;
  grid-template-columns: repeat(4, 1fr);
}

.price-card {
  text-align: left;
  position: relative;
}

.price-card h4 {
  font-size: 42px;
  margin: 8px 0;
  color: white;
}

.popular {
  border-color: rgba(23,215,255,0.4);
  box-shadow: 0 0 70px rgba(23,215,255,0.13);
  transform: translateY(-10px);
}

.popular-tag {
  display: inline-block;
  color: #00111a;
  background: var(--cyan);
  border-radius: 999px;
  padding: 7px 12px;
  font-weight: 900;
  font-size: 12px;
  margin-bottom: 12px;
}

.rules {
  text-align: center;
}

.rules-grid {
  margin-top: 42px;
  grid-template-columns: repeat(3, 1fr);
}

.rules-grid div {
  padding: 28px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.05);
  font-weight: 800;
}

.final {
  text-align: center;
  max-width: 1100px;
  margin: 0 auto;
}

.final p {
  margin: 20px auto;
  max-width: 900px;
}

.final-lines {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin: 42px 0;
}

.final-lines span {
  padding: 14px 20px;
  border-radius: 999px;
  background: rgba(23,215,255,0.08);
  border: 1px solid rgba(23,215,255,0.2);
  color: var(--cyan);
  font-weight: 900;
}

.final h3 {
  font-size: 32px;
  color: var(--gold);
}

footer {
  border-top: 1px solid var(--border);
  padding: 30px 8%;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 1100px) {
  .problem-grid,
  .feature-grid,
  .systems-grid,
  .portfolio-grid,
  .pricing-grid,
  .rules-grid,
  .loop-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .instructor-section,
  .split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav {
    padding: 0 5%;
  }

  .nav nav {
    display: none;
  }

  section {
    padding: 80px 5%;
  }

  .hero h1 {
    letter-spacing: -2px;
  }

  .hero p {
    font-size: 18px;
  }

  .compare,
  .problem-grid,
  .feature-grid,
  .systems-grid,
  .portfolio-grid,
  .pricing-grid,
  .rules-grid,
  .loop-grid {
    grid-template-columns: 1fr;
  }

  .glass-panel {
    padding: 34px;
  }

  .path-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
}