/* Variables */
:root {
  --bg: #0f0f12;
  --bg-card: #17171c;
  --bg-card-hover: #1e1e24;
  --fg: #f0ebe1;
  --fg-muted: #8a877e;
  --accent: #c8a97e;
  --accent-dim: rgba(200, 169, 126, 0.12);
  --border: rgba(240, 235, 225, 0.08);
  --card-border: rgba(240, 235, 225, 0.06);
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 60px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  background: rgba(15, 15, 18, 0.85);
}
.nav-brand {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.nav-tagline {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 160px 60px 80px;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(200, 169, 126, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 10% 80%, rgba(100, 120, 200, 0.04) 0%, transparent 50%),
    var(--bg);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 28px;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.65;
  color: var(--fg-muted);
  max-width: 440px;
  margin-bottom: 36px;
}
.hero-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.meta-pill {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(200, 169, 126, 0.25);
  padding: 5px 12px;
  border-radius: 2px;
}

/* Briefing Card */
.briefing-card {
  background: var(--bg-card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 32px;
  position: relative;
  overflow: hidden;
}
.briefing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.card-time {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.card-divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 20px;
}
.card-section {
  margin-bottom: 20px;
}
.card-label {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 8px;
}
.card-item {
  font-size: 13px;
  color: var(--fg);
  padding: 6px 0;
  border-bottom: 1px solid rgba(240, 235, 225, 0.04);
}
.card-item:last-child {
  border-bottom: none;
}
.card-footer {
  font-size: 10px;
  color: var(--fg-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* What is it */
.whatitis {
  background: #0b0b0e;
  padding: 120px 60px;
  border-top: 1px solid var(--border);
}
.whatitis-inner { max-width: 1200px; margin: 0 auto; }
.section-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
.whatitis-headline {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 600px;
  margin-bottom: 60px;
  color: var(--fg);
}
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}
.comp-col { padding: 40px; }
.comp-old { background: rgba(240, 235, 225, 0.02); }
.comp-new { background: rgba(200, 169, 126, 0.05); }
.comp-header {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 24px;
}
.comp-list { list-style: none; }
.comp-list li {
  font-size: 15px;
  color: var(--fg);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.comp-list li:last-child { border-bottom: none; }
.comp-new .comp-list li { color: var(--fg); }

/* How it works */
.howworks {
  padding: 120px 60px;
  border-top: 1px solid var(--border);
}
.howworks-inner { max-width: 1200px; margin: 0 auto; }
.howworks-headline {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 500px;
  margin-bottom: 80px;
  color: var(--fg);
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.step {}
.step-num {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 400;
  color: rgba(200, 169, 126, 0.15);
  line-height: 1;
  margin-bottom: 20px;
}
.step-title {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 12px;
  color: var(--fg);
}
.step-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--fg-muted);
}

/* Difference stats */
.difference {
  background: #0b0b0e;
  padding: 120px 60px;
  border-top: 1px solid var(--border);
}
.difference-inner { max-width: 1200px; margin: 0 auto; }
.diff-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}
.diff-item {
  padding: 40px 32px;
  background: rgba(240, 235, 225, 0.02);
}
.diff-stat {
  font-family: var(--font-display);
  font-size: 40px;
  color: var(--accent);
  margin-bottom: 8px;
}
.diff-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 16px;
}
.diff-desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--fg-muted);
}

/* Closing */
.closing {
  padding: 160px 60px;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 50% at 50% 60%, rgba(200, 169, 126, 0.08) 0%, transparent 60%),
    var(--bg);
  border-top: 1px solid var(--border);
}
.closing-inner { max-width: 700px; margin: 0 auto; }
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 28px;
}
.closing-sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--fg-muted);
}

/* Footer */
.footer {
  padding: 40px 60px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--fg-muted);
}
.footer-copy {
  font-size: 12px;
  color: var(--fg-muted);
}

/* Responsive */
@media (max-width: 900px) {
  .nav { padding: 20px 28px; }
  .hero { padding: 120px 28px 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 60px; }
  .hero-sub { max-width: 100%; }
  .whatitis { padding: 80px 28px; }
  .comparison { grid-template-columns: 1fr; }
  .howworks { padding: 80px 28px; }
  .steps { grid-template-columns: 1fr; gap: 48px; }
  .difference { padding: 80px 28px; }
  .diff-grid { grid-template-columns: 1fr 1fr; }
  .closing { padding: 100px 28px; }
  .footer { padding: 32px 28px; flex-direction: column; gap: 8px; text-align: center; }
}
@media (max-width: 480px) {
  .diff-grid { grid-template-columns: 1fr; }
}