:root {
  --bg: #F8FAFC;
  --text: #0B0F19;
  --accent: #1D4ED8;
  --accent-dark: #163ea8;
  --secondary: #64748B;
  --secondary-dark: #475569;
  --border: #D9E2EC;
  --border-strong: rgba(11, 15, 25, 0.12);
  --surface: rgba(255, 255, 255, 0.88);
  --surface-solid: #FFFFFF;
  --surface-alt: #F1F5F9;
  --surface-elevated: rgba(255, 255, 255, 0.96);
  --max-width: 1200px;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --shadow-sm: 0 10px 30px rgba(11, 15, 25, 0.05);
  --shadow-md: 0 20px 50px rgba(11, 15, 25, 0.08);
  --shadow-lg: 0 28px 80px rgba(11, 15, 25, 0.12);
  --transition-fast: 180ms cubic-bezier(0.22, 1, 0.36, 1);
  --transition-base: 320ms cubic-bezier(0.22, 1, 0.36, 1);
  --logo-height-desktop: 34px;
  --logo-height-mobile: 28px;
  --header-height-desktop: 82px;
  --header-height-mobile: 68px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(29, 78, 216, 0.05), transparent 28%),
    linear-gradient(180deg, #F8FAFC 0%, #F4F7FB 100%);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

main {
  overflow: clip;
}

section {
  position: relative;
  padding: 88px 0;
}

section[id] {
  scroll-margin-top: 120px;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

h1 {
  font-size: clamp(2.8rem, 4.9vw, 4.55rem);
  max-width: 10.6ch;
  margin-bottom: 26px;
}

h2 {
  font-size: clamp(2rem, 3vw, 3rem);
  margin-bottom: 18px;
  max-width: 18ch;
}

h3 {
  font-size: 1.16rem;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.skip-link {
  position: absolute;
  top: -44px;
  left: 16px;
  z-index: 9999;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--text);
  color: #fff;
}

.skip-link:focus {
  top: 16px;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(29, 78, 216, 0.22);
  outline-offset: 3px;
  border-radius: 12px;
}

.container {
  width: min(calc(100% - 48px), var(--max-width));
  margin: 0 auto;
}

.section-header {
  max-width: 820px;
}

.section-label {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-kicker,
.page-kicker,
.case-study-meta {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-weight: 700;
  text-transform: uppercase;
}

.panel-kicker {
  margin-bottom: 12px;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.page-kicker {
  gap: 10px;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.page-kicker::after {
  content: "";
  width: 64px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(29, 78, 216, 0.2) 100%);
}

.signal-label,
.case-meta-label,
.founder-meta-label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-meta-label,
.founder-meta-label {
  color: var(--secondary);
}

.hero-copy p,
.section-header p,
.card p,
.hero-panel p,
.founder-copy p,
.advisory-copy p,
.signal-item p,
.mistakes-column li,
.page-intro p,
.case-meta-card p,
.case-meta-card li,
.case-summary-card p,
.case-list-card p,
.case-reference-card p,
.case-callout p,
.case-note-card p,
.case-body p,
.case-body li,
.case-reference-list li,
.case-study-card p {
  margin: 0;
  font-size: 1rem;
  color: var(--secondary-dark);
  max-width: 72ch;
}

.hero-copy p,
.section-header p,
.card p,
.hero-panel p,
.founder-copy p,
.advisory-copy p,
.signal-item p,
.mistakes-column li {
  font-size: 1.02rem;
}

.hero-copy p + p,
.section-header p + p,
.founder-copy p + p,
.page-intro p + p,
.case-body p + p,
.case-callout p + p,
.case-note-card p + p {
  margin-top: 16px;
}

@media (max-width: 780px) {
  .container {
    width: min(calc(100% - 32px), var(--max-width));
  }

  section[id] {
    scroll-margin-top: 96px;
  }

  section {
    padding: 72px 0;
  }

  h1 {
    font-size: clamp(2.25rem, 10vw, 3.5rem);
    max-width: 100%;
  }

  h2 {
    max-width: 100%;
  }

  .hero-copy p,
  .section-header p,
  .card p,
  .hero-panel p,
  .founder-copy p,
  .advisory-copy p,
  .signal-item p,
  .mistakes-column li {
    font-size: 1rem;
  }
}