:root {
  --rgb-bg: 11, 15, 20;
  --rgb-surface: 15, 23, 42;
  --rgb-surface-elevated: 30, 41, 59;
  --rgb-border: 51, 65, 85;
  --rgb-text: 226, 232, 240;
  --rgb-text-secondary: 148, 163, 184;
  --rgb-text-muted: 100, 116, 139;
  --rgb-white: 248, 250, 252;
  --rgb-primary: 45, 108, 223;
  --rgb-primary-hover: 30, 94, 216;
  --rgb-primary-active: 26, 79, 184;
  --rgb-secondary: 29, 78, 216;
  --rgb-secondary-hover: 30, 64, 175;
  --rgb-secondary-active: 30, 58, 138;
  --rgb-accent: 14, 165, 233;
  --rgb-accent-hover: 2, 132, 199;
  --rgb-accent-active: 3, 105, 161;
  --color-bg: #0b0f14;
  --color-bg-elevated: #1e293b;
  --color-surface-elevated: #1e293b;
  --color-surface: #0f172a;
  --color-surface-muted: #0f172a;
  --color-surface-soft: #1e293b;
  --color-text: #e2e8f0;
  --color-text-muted: #64748b;
  --color-text-inverse: #e2e8f0;
  --color-text-secondary: #94a3b8;
  --color-text-secondary-inverse: #94a3b8;
  --color-border: #334155;
  --color-white: #f8fafc;
  --color-primary: #2d6cdf;
  --color-primary-hover: #1e5ed8;
  --color-primary-active: #1a4fb8;
  --color-secondary: #1d4ed8;
  --color-secondary-hover: #1e40af;
  --color-secondary-active: #1e3a8a;
  --color-accent: #0ea5e9;
  --color-accent-hover: #0284c7;
  --color-accent-active: #0369a1;
  --color-accent-strong: #2d6cdf;
  --color-accent-muted: rgba(var(--rgb-accent), 0.18);
  --surface-overlay: rgba(var(--rgb-bg), 0.76);
  --surface-panel: rgba(var(--rgb-surface), 0.84);
  --surface-panel-strong: rgba(var(--rgb-surface-elevated), 0.84);
  --surface-panel-soft: rgba(var(--rgb-surface), 0.68);
  --border-subtle: rgba(var(--rgb-border), 0.82);
  --border-strong: rgba(var(--rgb-border), 1);
  --shadow-soft: 0 24px 48px rgba(var(--rgb-bg), 0.22);
  --shadow-dark: 0 24px 56px rgba(var(--rgb-bg), 0.42);
  --shadow-focus: 0 0 0 4px rgba(var(--rgb-accent), 0.18);
  --radius-lg: 24px;
  --radius-md: 18px;
  --nav-height: 74px;
  --section-space: 80px;
  --section-space-tight: 64px;
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --space-64: 64px;
  --space-80: 80px;
  --font-body: 16px;
  --font-body-lg: 18px;
  --font-small: 14px;
  --font-label: 14px;
  --font-button: 15px;
  --font-h4: 20px;
  --font-h3: 24px;
  --font-h2: 34px;
  --font-h1: 52px;
  --leading-body: 1.6;
  --leading-small: 1.5;
  --leading-button: 1.2;
  --leading-h4: 1.4;
  --leading-h3: 1.3;
  --leading-h2: 1.2;
  --leading-h1: 1.1;
  --tracking-body: 0;
  --tracking-heading: -0.02em;
  --tracking-button: 0.02em;
  --measure-text: 640px;
  --measure-wide: 680px;
}

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

html {
  scroll-behavior: smooth;
  background: var(--color-bg);
  color-scheme: dark;
}

body {
  min-height: 100vh;
  font-family: 'Inter', ui-sans-serif, system-ui, sans-serif;
  font-size: var(--font-body);
  font-weight: 400;
  line-height: var(--leading-body);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  letter-spacing: var(--tracking-body);
}

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

a[href] {
  color: var(--color-primary);
  transition: color 0.22s ease;
}

a[href]:hover {
  color: var(--color-primary-hover);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-bottom: 0;
  font-weight: 600;
  color: inherit;
}

p,
li,
input,
textarea,
label {
  font-size: var(--font-body);
  line-height: var(--leading-body);
}

button,
input,
textarea,
select {
  font: inherit;
}

small {
  font-size: var(--font-small);
  line-height: var(--leading-small);
}

ul,
ol {
  padding-left: 0;
  margin-bottom: 0;
}

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

section {
  position: relative;
  display: block;
  margin: 0;
  isolation: isolate;
}

.section-header {
  width: min(var(--measure-wide), 100%);
  margin: 0 auto var(--space-48);
  text-align: center;
}

.section-header--wide {
  width: min(760px, 100%);
}

.section-header > * + * {
  margin-top: var(--space-16);
}

.section-header p {
  max-width: var(--measure-wide);
  margin-inline: auto;
  color: var(--color-text-secondary);
  font-size: var(--font-body);
  line-height: var(--leading-body);
}

.section-header > h1,
.section-header > h2,
.section-header > h3,
.section-header > h4,
.section-header > h5,
.section-header > h6 {
  max-width: var(--measure-wide);
  margin-inline: auto;
  font-size: var(--font-h2);
  font-weight: 600;
  line-height: var(--leading-h2);
  letter-spacing: var(--tracking-heading);
}

.section-header > h1 + h2,
.section-header > h2 + h3,
.section-header > h3 + h4 {
  max-width: var(--measure-text);
  margin-inline: auto;
  color: var(--color-text-secondary);
  font-size: var(--font-body-lg);
  font-weight: 500;
  line-height: var(--leading-body);
  letter-spacing: -0.01em;
}

.section-header--light p,
.section-header--light a {
  color: var(--color-text-secondary-inverse);
}

.section-actions {
  width: 100%;
  display: flex;
  justify-content: center;
}

a.button-link,
button.button-link,
.form-container .form-submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 180px;
  padding: 13px 28px;
  border-radius: 999px;
  border: 1px solid var(--color-primary);
  font-size: var(--font-button);
  font-weight: 600;
  line-height: var(--leading-button);
  letter-spacing: var(--tracking-button);
  color: var(--color-white);
  background: var(--color-primary);
  box-shadow: 0 18px 40px rgba(var(--rgb-primary), 0.22), inset 0 1px 0 rgba(var(--rgb-white), 0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease, color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

a.button-link:hover,
button.button-link:hover,
.form-container .form-submit-btn:hover {
  color: var(--color-white);
  transform: translateY(-2px);
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: 0 22px 42px rgba(var(--rgb-primary-hover), 0.26), inset 0 1px 0 rgba(var(--rgb-white), 0.1);
}

a.button-link--dark {
  color: var(--color-white);
  background: var(--color-surface-elevated);
  border-color: var(--border-subtle);
  box-shadow: 0 20px 38px rgba(var(--rgb-bg), 0.28), inset 0 1px 0 rgba(var(--rgb-white), 0.04);
}

a.button-link--dark:hover {
  color: var(--color-white);
  background: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
}

a.button-link:active,
button.button-link:active,
.form-container .form-submit-btn:active {
  background: var(--color-primary-active);
  border-color: var(--color-primary-active);
}

a.button-link--dark:active {
  background: var(--color-secondary-active);
  border-color: var(--color-secondary-active);
}

.page-shell {
  padding: 132px 24px 56px;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
  color: var(--color-text-inverse);
}

.page-shell__inner {
  width: min(960px, 100%);
  margin: 0 auto;
}

.page-shell__eyebrow {
  margin-bottom: var(--space-12);
  font-size: var(--font-label);
  font-weight: 500;
  line-height: var(--leading-small);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-shell__inner h1 {
  margin-bottom: var(--space-16);
  font-size: var(--font-h1);
  font-weight: 600;
  line-height: var(--leading-h1);
  letter-spacing: var(--tracking-heading);
}

.page-shell__lead {
  max-width: var(--measure-wide);
  color: var(--color-text-secondary-inverse);
  font-size: var(--font-body-lg);
  line-height: var(--leading-body);
}

::-webkit-scrollbar-track {
  border-color: transparent;
  background-color: var(--color-surface);
}

::-webkit-scrollbar {
  width: 10px;
  background-color: var(--color-surface);
}

::-webkit-scrollbar-thumb {
  background-color: var(--color-border);
  border-radius: 4px;
}

:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

@media screen and (max-width: 769px) {
  :root {
    --section-space: 64px;
    --section-space-tight: 48px;
    --font-body: 15px;
    --font-body-lg: 16px;
    --font-small: 13px;
    --font-label: 13px;
    --font-button: 14px;
    --font-h4: 18px;
    --font-h3: 20px;
    --font-h2: 28px;
    --font-h1: 34px;
    --leading-h2: 1.25;
    --leading-h1: 1.18;
  }

  .page-shell {
    padding-top: 112px;
  }

  .section-header {
    margin-bottom: var(--space-32);
  }
}