:root {
  --brand: #0c4a6e;
  --brand-mid: #0369a1;
  --brand-light: #0284c7;
  --brand-glow: rgba(2, 132, 199, 0.12);

  --bg: #f1f5f9;
  --bg-subtle: #e8eef4;
  --surface: #ffffff;

  --text: #0f172a;
  --text-secondary: #334155;
  --muted: #64748b;

  --border: #e2e8f0;

  --ok: #047857;
  --ok-bg: #ecfdf5;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --bad: #b91c1c;
  --bad-bg: #fef2f2;

  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);

  --max: 1120px;
  --font: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--brand-light);
  text-decoration: none;
}

a:hover {
  color: var(--brand-mid);
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
}

.logo img {
  width: 28px;
  height: 28px;
}

.nav {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.nav a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.125rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;
  text-decoration: none;
}

.btn-primary {
  background: var(--brand-light);
  color: #fff;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  background: var(--brand-mid);
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  color: var(--brand);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--brand-light);
  color: var(--brand-mid);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--brand);
  background: var(--brand-glow);
}

.menu-toggle {
  display: inline-flex;
  padding: 0.5rem;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0 0 1rem;
  border-top: 1px solid var(--border);
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  padding: 0.625rem 0;
  color: var(--text-secondary);
  font-weight: 500;
}

@media (min-width: 768px) {
  .nav {
    display: flex;
  }

  .menu-toggle {
    display: none;
  }

  .mobile-nav {
    display: none !important;
  }
}

/* Hero */
.hero {
  padding: 4rem 0 3rem;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, var(--brand-glow), transparent),
    linear-gradient(180deg, #fff 0%, var(--bg) 100%);
}

.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

.eyebrow {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  background: var(--brand-glow);
  color: var(--brand-mid);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-lead {
  margin: 0 0 1.75rem;
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 34rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.hero-note {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
}

/* Dashboard preview */
.preview-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.preview-topbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--brand);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
}

.preview-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
}

.preview-body {
  padding: 1.25rem;
}

.preview-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}

@media (min-width: 480px) {
  .preview-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat {
  padding: 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
}

.stat-value {
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.125rem;
}

.stat.ok .stat-value { color: var(--ok); }
.stat.warn .stat-value { color: var(--warn); }
.stat.bad .stat-value { color: var(--bad); }
.stat.neutral .stat-value { color: var(--brand-mid); }

.preview-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.preview-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 0.875rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  font-size: 0.875rem;
}

.preview-row strong {
  font-weight: 600;
}

.badge {
  flex-shrink: 0;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-bad { background: var(--bad-bg); color: var(--bad); }
.badge-pending { background: #f5f3ff; color: #6d28d9; }

/* Sections */
section {
  padding: 4rem 0;
}

.section-header {
  max-width: 40rem;
  margin-bottom: 2.5rem;
}

.section-header.center {
  text-align: center;
  margin-inline: auto;
}

.section-header h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.section-header p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.0625rem;
}

.problem {
  background: #fff;
  border-block: 1px solid var(--border);
}

.problem-list {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .problem-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.problem-item {
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 1px solid var(--border);
}

.problem-item p {
  margin: 0;
  color: var(--text-secondary);
}

.features-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature-card {
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.feature-card h3 {
  margin: 0 0 1rem;
  font-size: 1.125rem;
  color: var(--brand);
}

.feature-card ul {
  margin: 0;
  padding-left: 1.125rem;
  color: var(--text-secondary);
}

.feature-card li + li {
  margin-top: 0.5rem;
}

.steps {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

.step {
  position: relative;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.75rem;
  border-radius: 999px;
  background: var(--brand-glow);
  color: var(--brand-mid);
  font-weight: 700;
  font-size: 0.875rem;
}

.step h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.step p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.audience {
  background: #fff;
  border-block: 1px solid var(--border);
}

.audience-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .audience-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.audience-card {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.audience-card.fit {
  background: var(--ok-bg);
  border-color: #a7f3d0;
}

.audience-card.not-fit {
  background: var(--bg);
}

.audience-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
}

.audience-card ul {
  margin: 0;
  padding-left: 1.125rem;
  color: var(--text-secondary);
}

.audience-card li + li {
  margin-top: 0.375rem;
}

/* CTA */
.cta {
  padding: 4rem 0 5rem;
}

.cta-card {
  padding: 2.5rem 1.5rem;
  text-align: center;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-mid) 100%);
  color: #fff;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 640px) {
  .cta-card {
    padding: 3rem;
  }
}

.cta-card h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.cta-card p {
  margin: 0 auto 1.5rem;
  max-width: 32rem;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.0625rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.cta .btn-primary {
  background: #fff;
  color: var(--brand);
}

.cta .btn-primary:hover {
  background: var(--bg);
  color: var(--brand-mid);
}

.cta .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}

.cta .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  background: #fff;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
  text-align: center;
  color: var(--muted);
  font-size: 0.875rem;
}

.footer-inner a {
  color: var(--muted);
}

.footer-inner a:hover {
  color: var(--brand);
}