:root {
  --bg: #FDFBF7;
  --bg-alt: #F5F0E8;
  --fg: #1A1A1A;
  --fg-muted: #6B6358;
  --accent: #2D6A4F;
  --accent-light: #40916C;
  --accent-glow: rgba(45, 106, 79, 0.08);
  --warm: #D4A373;
  --warm-light: #E8D5B7;
  --done: #40916C;
  --active: #2D6A4F;
  --pending: #C9BFA8;
  --card-bg: #FFFFFF;
  --border: #E8E0D4;
  --radius: 12px;
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === NAV === */
.nav {
  padding: 20px 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(253, 251, 247, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

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

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

.logo-mark {
  color: var(--accent);
  font-size: 18px;
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  color: var(--fg);
}

/* === HERO === */
.hero {
  padding: 140px 32px 80px;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-inner {
  max-width: 680px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  background: var(--accent-glow);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 28px;
  border: 1px solid rgba(45, 106, 79, 0.15);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 24px;
}

.hero h1 em {
  color: var(--accent);
  font-style: italic;
}

.hero-sub {
  font-size: 19px;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 520px;
}

/* Timeline Visual */
.hero-visual {
  margin-top: 64px;
  overflow-x: auto;
  padding-bottom: 16px;
}

.timeline-strip {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 600px;
  padding: 32px 0;
}

.timeline-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.node-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 3px solid var(--pending);
  background: var(--bg);
}

.timeline-node.done .node-dot {
  background: var(--done);
  border-color: var(--done);
}

.timeline-node.active .node-dot {
  border-color: var(--active);
  background: var(--bg);
}

.node-dot.pulse {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(45, 106, 79, 0.3); }
  50% { box-shadow: 0 0 0 8px rgba(45, 106, 79, 0); }
}

.node-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
  white-space: nowrap;
}

.timeline-node.pending .node-label {
  color: var(--fg-muted);
}

.node-date {
  font-size: 12px;
  color: var(--fg-muted);
}

.timeline-connector {
  flex: 1;
  height: 3px;
  min-width: 40px;
  background: var(--pending);
  margin: 0 -1px;
  margin-bottom: 36px;
}

.timeline-connector.done {
  background: var(--done);
}

.timeline-connector.active {
  background: linear-gradient(90deg, var(--done), var(--pending));
}

/* === PROBLEM === */
.problem {
  padding: 100px 32px;
  background: var(--bg-alt);
}

.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.problem-left h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.problem-right p {
  color: var(--fg-muted);
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.problem-right p:last-child {
  color: var(--fg);
  font-weight: 500;
}

/* === FEATURES === */
.features {
  padding: 100px 32px;
}

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

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

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: box-shadow 0.2s ease;
}

.feature-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}

.feature-icon {
  font-size: 28px;
  margin-bottom: 16px;
  display: inline-block;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 15px;
  line-height: 1.65;
}

/* === HOW === */
.how {
  padding: 100px 32px;
  background: var(--fg);
  color: var(--bg);
}

.how-inner {
  max-width: 900px;
  margin: 0 auto;
}

.how-header {
  margin-bottom: 64px;
}

.how-header h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  margin-bottom: 12px;
}

.how-sub {
  color: rgba(253, 251, 247, 0.6);
  font-size: 18px;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.how-step {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.step-num {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 300;
  color: var(--warm);
  line-height: 1;
  flex-shrink: 0;
  width: 64px;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  color: rgba(253, 251, 247, 0.65);
  font-size: 16px;
  line-height: 1.65;
}

/* === CLOSING === */
.closing {
  padding: 120px 32px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.closing-sub {
  font-size: 18px;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* === FOOTER === */
.footer {
  padding: 40px 32px;
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  color: var(--fg);
}

.footer-tagline {
  color: var(--fg-muted);
  font-size: 14px;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero {
    padding: 120px 20px 60px;
  }

  .problem-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .how-step {
    flex-direction: column;
    gap: 12px;
  }

  .step-num {
    font-size: 36px;
    width: auto;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .closing {
    padding: 80px 20px;
  }

  .nav-inner {
    padding: 0 20px;
  }
}