:root {
  --bg: #0d0d0d;
  --bg-elevated: #151515;
  --bg-card: #1a1a1a;
  --fg: #f0ede6;
  --fg-muted: #8a8680;
  --fg-subtle: #5a5854;
  --accent: #c8ff57;
  --accent-dim: rgba(200, 255, 87, 0.12);
  --border: #2a2a2a;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

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

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 {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 32px;
  background: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.03em;
}
.nav-badge {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 10px;
  border-radius: 4px;
}

/* HERO */
.hero {
  padding: 160px 32px 100px;
  max-width: 1100px;
  margin: 0 auto;
}
.hero-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 28px;
  color: var(--fg);
}
.hero-sub {
  font-size: 18px;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 540px;
  margin-bottom: 56px;
}
.hero-visual {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* TASK CARDS */
.task-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.task-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.task-card-title {
  font-weight: 600;
  font-size: 14px;
}
.task-card-status {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 4px;
}
.status-active { background: rgba(200, 255, 87, 0.15); color: #a8e840; }
.status-done { background: rgba(100, 255, 150, 0.12); color: #6fcf97; }
.task-card-progress {
  height: 4px;
  background: var(--bg-elevated);
  border-radius: 2px;
  margin-bottom: 10px;
}
.progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
}
.task-card-meta {
  font-size: 12px;
  color: var(--fg-muted);
}
.task-card-done { opacity: 0.65; }

/* FEATURES */
.features {
  padding: 80px 32px;
  max-width: 1100px;
  margin: 0 auto;
}
.features-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 16px;
}
.features-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 56px;
  max-width: 480px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.feature-num {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.feature-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.feature-desc {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* HOW */
.how {
  padding: 80px 32px;
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  border-top: 1px solid var(--border);
}
.how-tag {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.how-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.how-body {
  font-size: 16px;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.comparison-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 16px;
}
.comparison-list {
  list-style: none;
}
.comparison-list li {
  font-size: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  color: var(--fg-muted);
}
.comparison-old .comparison-list li { color: var(--fg-subtle); text-decoration: line-through; }
.comparison-new .comparison-list li { color: var(--fg); }

/* CLOSING */
.closing {
  padding: 120px 32px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.closing-inner { text-align: center; }
.closing-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 20px;
}
.closing-sub {
  font-size: 18px;
  color: var(--fg-muted);
}

/* FOOTER */
.footer {
  padding: 40px 32px;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
}
.footer-tagline {
  font-size: 14px;
  color: var(--fg-subtle);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { padding: 120px 20px 60px; }
  .hero-visual { grid-template-columns: 1fr; }
  .features { padding: 60px 20px; }
  .features-grid { grid-template-columns: 1fr; gap: 40px; }
  .how { grid-template-columns: 1fr; gap: 48px; padding: 60px 20px; }
  .comparison { grid-template-columns: 1fr; }
  .closing { padding: 80px 20px; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
  .nav { padding: 16px 20px; }
}