/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0D1117;
  --bg-2: #161B22;
  --surface: #1C2128;
  --border: #30363D;
  --fg: #E6EDF3;
  --fg-2: #8B949E;
  --fg-3: #6E7681;
  --accent: #E8A020;
  --accent-2: #FFB84D;
  --accent-glow: rgba(232, 160, 32, 0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --font-display: 'Sora', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === NAV === */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(13, 17, 23, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--fg);
  letter-spacing: -0.3px;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--fg-2);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--fg); }

/* === HERO === */
.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 32px 80px;
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
}

.hero-glow-1 {
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(232, 160, 32, 0.12) 0%, transparent 70%);
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
}

.hero-glow-2 {
  width: 800px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.06) 0%, transparent 70%);
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.25;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 30%, transparent 80%);
}

.hero-inner {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--fg-2);
  margin-bottom: 36px;
  font-weight: 500;
}

.badge-dot {
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 80px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2.5px;
  margin-bottom: 28px;
  color: var(--fg);
}

.hero-accent {
  color: var(--accent);
}

.hero-sub {
  font-size: 19px;
  color: var(--fg-2);
  max-width: 560px;
  margin: 0 auto 48px;
  line-height: 1.65;
  font-weight: 400;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 36px;
  max-width: 520px;
  margin: 0 auto;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 24px;
}

.stat:first-child { padding-left: 0; }
.stat:last-child { padding-right: 0; }

.stat-num {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.5px;
}

.stat-label {
  font-size: 12px;
  color: var(--fg-3);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  flex-shrink: 0;
}

/* === SECTION EYEBROW === */
.section-eyebrow {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 16px;
}

/* === PROBLEM === */
.problem { padding: 80px 32px; }

.problem-inner { max-width: 1100px; margin: 0 auto; }

.problem-header { margin-bottom: 56px; }

.problem-headline {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -1px;
  color: var(--fg);
  max-width: 680px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.3s, transform 0.3s;
}

.problem-card:hover {
  border-color: rgba(232, 160, 32, 0.3);
  transform: translateY(-3px);
}

.problem-icon {
  width: 48px;
  height: 48px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-2);
  margin-bottom: 20px;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}

.problem-card p {
  font-size: 14px;
  color: var(--fg-2);
  line-height: 1.65;
}

/* === SOLUTION === */
.solution {
  padding: 80px 32px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.solution-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.solution-headline {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.8px;
  color: var(--fg);
  margin-bottom: 20px;
}

.solution-body {
  font-size: 16px;
  color: var(--fg-2);
  line-height: 1.7;
  margin-bottom: 28px;
}

.solution-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  padding: 6px 14px;
  background: var(--accent-glow);
  border: 1px solid rgba(232, 160, 32, 0.3);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
}

/* === CHECKOUT PREVIEW === */
.checkout-preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 0 1px rgba(232,160,32,0.1);
}

.preview-header {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.preview-dot:first-child { background: #FF5F57; }
.preview-dot:nth-child(2) { background: #FFBD2E; }
.preview-dot:nth-child(3) { background: #28CA41; }

.preview-content { padding: 24px; }

.preview-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--fg-3);
  margin-bottom: 16px;
}

.preview-item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.preview-item-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  flex-shrink: 0;
}

.prod { background: linear-gradient(135deg, #2D4A3E, #1A3028); }
.course { background: linear-gradient(135deg, #3D2D4A, #281A32); }

.preview-item-info { flex: 1; }

.preview-item-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--fg);
}

.preview-item-meta {
  font-size: 12px;
  color: var(--fg-3);
  margin-top: 2px;
}

.preview-item-price {
  font-size: 14px;
  font-weight: 600;
  color: var(--fg);
}

.preview-divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

.preview-total {
  display: flex;
  justify-content: space-between;
  font-size: 15px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 16px;
}

.preview-cta {
  background: var(--accent);
  color: #0D1117;
  border-radius: 8px;
  padding: 12px;
  text-align: center;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 10px;
}

.preview-note {
  text-align: center;
  font-size: 11px;
  color: var(--fg-3);
}

/* === FEATURES === */
.features { padding: 80px 32px; }

.features-inner { max-width: 1100px; margin: 0 auto; }

.features-header { text-align: center; margin-bottom: 56px; }

.features-headline {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--fg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.3s, transform 0.3s;
}

.feature-card:hover {
  border-color: rgba(232, 160, 32, 0.3);
  transform: translateY(-2px);
}

.feature-card-accent {
  width: 44px;
  height: 44px;
  background: var(--accent-glow);
  border: 1px solid rgba(232, 160, 32, 0.25);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 13px;
  color: var(--fg-2);
  line-height: 1.65;
}

/* === MANIFESTO === */
.manifesto { padding: 80px 32px; background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.manifesto-inner { max-width: 720px; margin: 0 auto; text-align: center; }

.manifesto-quote {
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--fg);
  letter-spacing: -0.5px;
  margin-bottom: 28px;
  font-style: normal;
}

.manifesto-body {
  font-size: 15px;
  color: var(--fg-2);
  line-height: 1.75;
  margin-bottom: 16px;
}

/* === CLOSING === */
.closing { padding: 100px 32px; text-align: center; }

.closing-inner { max-width: 600px; margin: 0 auto; }

.closing-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--accent-glow);
  border: 1px solid rgba(232, 160, 32, 0.3);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.5px;
  margin-bottom: 36px;
}

.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -2px;
  color: var(--fg);
  line-height: 1.05;
  margin-bottom: 20px;
}

.closing-sub {
  font-size: 17px;
  color: var(--fg-2);
  line-height: 1.65;
}

/* === FOOTER === */
.footer { padding: 48px 32px; border-top: 1px solid var(--border); }

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

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--fg);
}

.footer-tagline {
  font-size: 14px;
  color: var(--fg-3);
  margin-bottom: 8px;
}

.footer-copy {
  font-size: 12px;
  color: var(--fg-3);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav-inner { padding: 14px 20px; }
  .nav-links { gap: 20px; }

  .hero { padding: 64px 20px 56px; }
  .hero-headline { letter-spacing: -1.5px; }
  .hero-stats { padding: 20px 16px; flex-wrap: wrap; gap: 16px; }
  .stat-divider { display: none; }
  .stat { padding: 0; min-width: 90px; }

  .problem, .features, .manifesto, .closing { padding: 56px 20px; }
  .problem-grid, .features-grid { grid-template-columns: 1fr; }

  .solution-inner { grid-template-columns: 1fr; gap: 48px; }
  .solution { padding: 56px 20px; }

  .footer { padding: 36px 20px; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 40px; letter-spacing: -1px; }
  .hero-sub { font-size: 16px; }
  .closing-headline { font-size: 36px; letter-spacing: -1px; }
  .manifesto-quote { font-size: 20px; }
}