:root {
  --color-bg: #eef3fb;
  --color-panel: #ffffff;
  --color-panel-soft: #f4f7ff;
  --color-border: #d4dff1;
  --color-border-strong: #c2d1eb;
  --color-text: #0f1d3a;
  --color-text-soft: #4a5b80;
  --color-accent: #2f5bdf;
  --color-accent-soft: #e6edff;
  --color-accent-2: #168f81;
  --color-accent-3: #6b86e8;

  --font-main: Inter, Manrope, ui-sans-serif, system-ui, sans-serif;
  --font-display: clamp(2rem, 3vw, 2.8rem);
  --font-h2: clamp(1.4rem, 2.2vw, 1.9rem);
  --font-h3: 1.1rem;
  --font-body: 1rem;
  --font-small: 0.875rem;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  --radius-1: 10px;
  --radius-2: 14px;
  --radius-3: 18px;
  --radius-pill: 999px;

  --shadow-1: 0 8px 24px rgba(26, 51, 105, 0.08);
  --shadow-2: 0 20px 44px rgba(18, 39, 86, 0.12);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background:
    radial-gradient(circle at 8% 2%, #f8fbff 0%, transparent 30%),
    radial-gradient(circle at 88% 10%, #edf3ff 0%, transparent 28%),
    linear-gradient(180deg, #f2f6fd 0%, var(--color-bg) 100%);
  color: var(--color-text);
  font-size: var(--font-body);
}

.site-shell {
  display: flex;
  min-height: 100vh;
}

.side-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  padding: var(--space-6);
  background: linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
  border-right: 1px solid var(--color-border-strong);
  overflow-y: auto;
  box-shadow: var(--shadow-1);
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: var(--space-1);
  text-decoration: none;
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.brand-name {
  color: var(--color-text);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.brand-note {
  color: var(--color-text-soft);
  font-size: var(--font-small);
}

.nav-title {
  margin: 0 0 var(--space-3);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-soft);
  font-weight: 700;
}

.side-nav nav {
  display: grid;
  gap: var(--space-1);
}

.side-nav a {
  color: var(--color-text-soft);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-1);
  padding: 9px 11px;
  font-size: var(--font-small);
  font-weight: 500;
  transition: all 150ms ease;
}

.side-nav a:hover,
.side-nav a.active {
  color: var(--color-text);
  background: var(--color-accent-soft);
  border-color: #c3d2ff;
  box-shadow: inset 3px 0 0 var(--color-accent);
}

.content {
  width: 100%;
  margin-left: 280px;
  padding: var(--space-10) var(--space-8) var(--space-12);
}

.section {
  width: min(1140px, 100%);
  margin-inline: auto;
  margin-bottom: var(--space-10);
  scroll-margin-top: var(--space-8);
}

.section:not(.hero) {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-1);
  padding: var(--space-8);
}

.hero {
  background: linear-gradient(140deg, #e4ecff 0%, #f8fbff 56%, #edf9f6 100%);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-2);
  padding: var(--space-10);
}

.eyebrow {
  margin: 0 0 var(--space-4);
  display: inline-flex;
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  padding: 6px 10px;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

h2 {
  font-size: var(--font-h2);
  line-height: 1.2;
  margin-bottom: var(--space-5);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--font-h3);
  line-height: 1.35;
}

.lead {
  margin-top: var(--space-5);
  max-width: 75ch;
  color: var(--color-text-soft);
  line-height: 1.7;
  font-size: 1.05rem;
}

.lead-small,
.intro {
  color: var(--color-text-soft);
  line-height: 1.65;
  max-width: 80ch;
}

.chip-row,
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.chip-row {
  margin-top: var(--space-6);
}

.chip {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-pill);
  border: 1px solid #c0cffb;
  background: #edf3ff;
  color: #27458f;
  font-size: var(--font-small);
  font-weight: 600;
  padding: 7px 13px;
}

.cta-row {
  margin-top: var(--space-6);
}

.btn {
  min-height: 44px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  padding: 10px 16px;
  font-size: var(--font-small);
  font-weight: 700;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  transition: transform 140ms ease, box-shadow 140ms ease, background-color 140ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(120deg, var(--color-accent) 0%, var(--color-accent-3) 100%);
  color: #fff;
  box-shadow: 0 10px 24px rgba(47, 91, 223, 0.28);
}

.btn-secondary {
  color: var(--color-text);
  background: var(--color-panel);
  border-color: var(--color-border);
  box-shadow: 0 2px 10px rgba(20, 39, 86, 0.05);
}

.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.panel,
.metric,
.timeline-item {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2);
  box-shadow: var(--shadow-1);
}

.panel,
.card,
.timeline-item {
  padding: var(--space-6);
}

.card.slim {
  padding: var(--space-5);
}

.card-kicker {
  margin: 0 0 var(--space-3);
  color: #2d4ea8;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}

.card p {
  color: var(--color-text-soft);
  margin-top: var(--space-3);
  line-height: 1.62;
}

ul,
ol {
  margin: var(--space-4) 0 0;
  padding-left: 1.2rem;
  line-height: 1.6;
  color: var(--color-text-soft);
}

.timeline {
  display: grid;
  gap: var(--space-4);
}

.timeline-item .muted {
  margin-top: var(--space-3);
  font-size: 0.94rem;
}

.metric {
  padding: var(--space-5);
  border-color: var(--color-border-strong);
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.metric-value {
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.metric p {
  margin-top: var(--space-3);
  color: var(--color-text-soft);
}

.price {
  margin-top: var(--space-3);
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.card-selected {
  border-color: #9ed1c9;
  background: linear-gradient(180deg, #f3fffb 0%, #f8fffd 100%);
  box-shadow: 0 12px 30px rgba(22, 143, 129, 0.16);
}

.margin-top {
  margin-top: var(--space-5);
}

.space-top {
  margin-top: var(--space-5);
}

.focus-visible:focus-visible {
  outline: 2px solid var(--color-accent-2);
  outline-offset: 2px;
}

@media (max-width: 1100px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .site-shell {
    flex-direction: column;
  }

  .side-nav {
    position: static;
    width: 100%;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .content {
    margin-left: 0;
    padding: var(--space-6) var(--space-4);
  }

  .hero {
    padding: var(--space-6);
  }

  .section:not(.hero) {
    padding: var(--space-6);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}