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

:root {
  --color-bg: #ffffff;
  --color-text: #1a1a2e;
  --color-muted: #6b7280;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: #eff6ff;
  --color-border: #e5e7eb;
  --color-surface: #f9fafb;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --max-width: 1120px;
  --radius: 10px;
}

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
[data-pending] { cursor: default; color: var(--color-muted); text-decoration: none; }

img { display: block; max-width: 100%; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 32px;
}
.nav-logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-accent);
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-muted);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--color-accent); }
.nav-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  transition: background 0.15s;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--color-accent-hover) !important; color: #fff; }

/* Hero */
.hero {
  padding: 80px 0 72px;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
  letter-spacing: 0.01em;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 820px;
  margin: 0 auto 20px;
}
.hero h1 span { color: var(--color-accent); }
.hero-sub {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  transition: background 0.15s, transform 0.1s;
}
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); }
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  transition: border-color 0.15s, transform 0.1s;
}
.btn-secondary:hover { border-color: var(--color-accent); transform: translateY(-1px); }

/* Stats */
.stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 80px;
}
.stat-item { text-align: center; }
.stat-number {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.03em;
  line-height: 1;
}
.stat-label {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-top: 4px;
}

/* Decision section */
.decision {
  padding: 0 0 80px;
}
.section-label {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}
.section-desc {
  color: var(--color-muted);
  font-size: 1.0625rem;
  max-width: 540px;
  margin-bottom: 40px;
}
.decision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.decision-card {
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.15s, transform 0.15s;
}
.decision-card:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.decision-card.featured { border-color: var(--color-accent); background: var(--color-accent-light); }
.card-tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: #fff;
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  padding: 3px 8px;
  display: inline-block;
  margin-bottom: 16px;
}
.decision-card.featured .card-tag { background: var(--color-accent); color: #fff; }
.decision-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.decision-card p {
  color: var(--color-muted);
  font-size: 0.9375rem;
  margin-bottom: 20px;
  line-height: 1.6;
}
.card-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 24px;
}
.card-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
}
.card-meta-item .dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-accent);
}
.card-link:hover { text-decoration: underline; }

/* Topics grid */
.topics { padding: 0 0 80px; }
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 40px;
}
.topic-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  transition: border-color 0.15s, background 0.15s;
}
.topic-card:hover { border-color: var(--color-accent); background: var(--color-accent-light); }
.topic-icon { font-size: 1.5rem; line-height: 1; }
.topic-card h3 { font-size: 1rem; font-weight: 700; }
.topic-card p { font-size: 0.8375rem; color: var(--color-muted); line-height: 1.5; }
.topic-card .topic-arrow {
  margin-top: auto;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* Timeline strip */
.timeline-strip {
  background: var(--color-text);
  color: #fff;
  padding: 64px 0;
  margin-bottom: 80px;
}
.timeline-strip .section-label { color: #60a5fa; }
.timeline-strip .section-title { color: #fff; }
.timeline-strip .section-desc { color: #94a3b8; }
.timeline-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  margin-top: 40px;
  position: relative;
}
.timeline-steps::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: #2563eb;
}
.timeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 12px;
  position: relative;
}
.step-num {
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.step-title {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.step-time {
  font-size: 0.8125rem;
  color: #60a5fa;
  font-weight: 600;
}
.step-desc {
  font-size: 0.8125rem;
  color: #94a3b8;
  margin-top: 4px;
  line-height: 1.5;
}

/* Popular guides */
.guides { padding: 0 0 80px; }
.guides-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 40px;
}
.guide-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: #fff;
  gap: 16px;
  transition: background 0.15s;
  border-bottom: 1px solid var(--color-border);
}
.guide-item:last-child { border-bottom: none; }
.guide-item:hover { background: var(--color-accent-light); }
.guide-info { display: flex; align-items: center; gap: 14px; flex: 1; min-width: 0; }
.guide-cat {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
}
.guide-title {
  font-size: 0.9375rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.guide-arrow { color: var(--color-muted); font-size: 1.125rem; flex-shrink: 0; }

/* Footer */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-top: 8px;
  max-width: 260px;
  line-height: 1.6;
}
.footer-col h4 {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 14px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 0.875rem; color: var(--color-muted); transition: color 0.15s; }
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 0.8125rem; color: var(--color-muted); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero { padding: 56px 0 48px; }
  .stats { gap: 32px; }
  .timeline-steps::before { display: none; }
  .timeline-step { padding: 0 8px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .guide-cat { display: none; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}