:root {
  /* Product-derived enterprise core: UI green, action teal, product chrome, and paper. */
  --srx-logo-green: #1e756d;
  --srx-brand: #1f8078;
  --srx-ink: #0f1a17;
  --srx-paper: #f7f4ee;

  /* Tonal variants are derived from the four core colors for consistency. */
  --srx-brand-deep: #0f4f48;
  --srx-brand-soft: color-mix(in srgb, var(--srx-brand) 10%, var(--srx-paper));
  --srx-accent-mint: #63cfc4;
  --srx-chrome-deep: #0f1a17;
  --srx-chrome: #0f1e19;
  --srx-ink-secondary: color-mix(in srgb, var(--srx-ink) 86%, var(--srx-paper));
  --srx-muted: color-mix(in srgb, var(--srx-ink) 62%, var(--srx-paper));
  --srx-muted-light: color-mix(in srgb, var(--srx-ink) 46%, var(--srx-paper));
  --srx-wash: color-mix(in srgb, var(--srx-paper) 92%, var(--srx-brand));
  --srx-panel: color-mix(in srgb, var(--srx-paper) 52%, white);
  --srx-line: color-mix(in srgb, var(--srx-ink) 9%, var(--srx-paper));
  --srx-line-strong: color-mix(in srgb, var(--srx-ink) 16%, var(--srx-paper));
  --srx-positive: var(--srx-logo-green);
  --srx-positive-soft: color-mix(in srgb, var(--srx-logo-green) 10%, var(--srx-paper));
  --srx-warning: var(--srx-brand-deep);
  --srx-warning-soft: var(--srx-brand-soft);
  --srx-critical: #b03d34;
  --srx-critical-soft: color-mix(in srgb, var(--srx-critical) 10%, var(--srx-paper));
  --srx-information: var(--srx-brand);
  --srx-information-soft: var(--srx-brand-soft);

  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 88px;
  --space-10: 120px;

  --radius-control: 11px;
  --radius-card: 16px;
  --radius-product: 20px;
  --radius-pill: 999px;
  --content-max: 1280px;
  --reading-max: 760px;
  --gutter: clamp(20px, 3vw, 40px);
  --section-space: clamp(44px, 4.8vw, 76px);
  --section-space-compact: clamp(32px, 3.6vw, 56px);

  --shadow-low: 0 2px 8px -4px color-mix(in srgb, var(--srx-chrome-deep) 14%, transparent);
  --shadow-header: 0 8px 24px -18px color-mix(in srgb, var(--srx-chrome-deep) 24%, transparent);
  --shadow-product: 0 20px 48px -20px color-mix(in srgb, var(--srx-chrome-deep) 28%, transparent);

  --motion-micro: 150ms;
  --motion-component: 280ms;
  --motion-reveal: 400ms;
  --motion-path: 1200ms;
  --ease-enterprise: cubic-bezier(0.2, 0.8, 0.2, 1);
  --header-height: 78px;
}

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

html {
  color-scheme: light;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--srx-paper);
  color: var(--srx-ink);
  font-family: var(--d-font);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.625;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

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

img {
  height: auto;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--srx-brand-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

:focus-visible {
  outline: 3px solid var(--srx-brand);
  outline-offset: 3px;
}

::selection {
  background: var(--srx-accent-mint);
  color: var(--srx-chrome-deep);
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
blockquote {
  margin-top: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--srx-ink);
  font-family: var(--d-font);
  font-weight: 600;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(2.25rem, 4.4vw, 3.5rem);
  line-height: 1.107;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(1.875rem, 3.3vw, 2.625rem);
  line-height: 1.143;
}

h3 {
  margin-bottom: 14px;
  font-size: clamp(1.375rem, 2.2vw, 1.75rem);
  line-height: 1.214;
}

h4 {
  margin-bottom: 12px;
  font-size: 1.125rem;
  line-height: 1.35;
}

p {
  margin-bottom: 1em;
  color: var(--srx-ink-secondary);
}

.site-shell {
  width: min(calc(100% - (2 * var(--gutter))), var(--content-max));
  margin-inline: auto;
}

.reading-shell {
  max-width: var(--reading-max);
}

.site-main {
  min-height: 60vh;
}

.section {
  position: relative;
  padding-block: var(--section-space);
}

.section--compact {
  padding-block: var(--section-space-compact);
}

.section--panel {
  background: var(--srx-panel);
}

.section--wash {
  background: var(--srx-wash);
}

.section--dark {
  overflow: hidden;
  background: var(--srx-chrome-deep);
  color: var(--srx-panel);
}

.section--dark h2,
.section--dark h3,
.section--dark p,
.section--dark li {
  color: inherit;
}

.section--blend::before,
.section--blend::after {
  position: absolute;
  z-index: 0;
  right: -8%;
  width: min(46vw, 620px);
  height: min(46vw, 620px);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.section--blend {
  overflow: hidden;
}

.section--blend::before {
  top: -34%;
  background: radial-gradient(circle, color-mix(in srgb, var(--srx-brand) 9%, transparent) 0, transparent 68%);
}

.section--blend > * {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin-bottom: 16px;
  color: var(--srx-brand-deep);
  font-family: var(--d-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.35;
  text-transform: uppercase;
}

.section--dark .eyebrow,
.page-hero--dark .eyebrow {
  color: var(--srx-accent-mint);
}

.lead {
  max-width: 68ch;
  color: var(--srx-ink-secondary);
  font-size: clamp(1.0625rem, 1.5vw, 1.1875rem);
  line-height: 1.58;
}

.section-intro {
  max-width: var(--reading-max);
  margin-bottom: clamp(24px, 3vw, 40px);
}

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

.dual-title span {
  color: var(--srx-brand);
}

.prose {
  color: var(--srx-ink-secondary);
}

.prose > * + * {
  margin-top: 1.25em;
}

.prose h2,
.prose h3 {
  margin-top: 1.75em;
}

.prose ul,
.prose ol {
  padding-left: 1.35em;
}

.prose li + li {
  margin-top: 0.55em;
}

.skip-link {
  position: fixed;
  z-index: 10000;
  top: 12px;
  left: 12px;
  padding: 12px 18px;
  border-radius: var(--radius-control);
  background: var(--srx-panel);
  box-shadow: var(--shadow-header);
  color: var(--srx-ink);
  font-weight: 600;
  transform: translateY(-160%);
  transition: transform var(--motion-micro) var(--ease-enterprise);
}

.skip-link:focus {
  transform: translateY(0);
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.reveal-step {
  transform: translateY(0);
  transition: transform var(--motion-reveal) var(--ease-enterprise);
}

.motion-ready .reveal-step:not(.is-revealed) {
  transform: translateY(10px);
}

@media (min-width: 1920px) {
  :root {
    --gutter: 48px;
  }
}

@media (max-width: 1024px) {
  :root {
    --header-height: 72px;
  }
}

@media (max-width: 767px) {
  :root {
    --header-height: 66px;
    --gutter: 20px;
  }

  h1 {
    letter-spacing: -0.03em;
  }

  .section-intro--center {
    text-align: left;
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: 2.125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .motion-ready .reveal-step:not(.is-revealed) {
    transform: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .skip-link,
  .button-row,
  .page-hero__visual {
    display: none !important;
  }

  body {
    background: var(--srx-paper);
    color: var(--srx-ink);
  }

  .section,
  .page-hero {
    padding: 24px 0 !important;
    background: var(--srx-paper) !important;
    color: var(--srx-ink) !important;
  }
}