@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

/*
  Brooks Photonics visual refinement.
  Deliberately restrained: technical publishing and established photonics sites,
  rather than startup dashboards or decorative software-product UI.
*/

:root {
  --bg: #f4f3f5;
  --surface: #ffffff;
  --surface-soft: #f8f7f9;
  --ink: #19161d;
  --ink-soft: #5d5862;
  --purple: #6a2e8e;
  --purple-dark: #4d1f6b;
  --purple-light: #eee7f2;
  --line: #d9d5dc;
  --shadow-sm: none;
  --shadow-md: none;
  --radius-sm: 3px;
  --radius: 4px;
  --radius-lg: 6px;
  --container: 1160px;
}

body {
  font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.58;
  background: var(--bg);
}

::selection {
  color: #fff;
  background: var(--purple);
}

::-moz-selection {
  color: #fff;
  background: var(--purple);
}

.eyebrow::selection {
  color: var(--purple-dark);
  background: #fff;
}

.eyebrow::-moz-selection {
  color: var(--purple-dark);
  background: #fff;
}

.container {
  width: min(calc(100% - 56px), var(--container));
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .97);
  backdrop-filter: none;
}

.header-inner {
  min-height: 76px;
}

.brand-copy strong {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.01em;
}

.brand-copy span {
  color: #6d6771;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .055em;
}

.desktop-nav > a,
.mobile-menu nav > a {
  border-radius: 2px;
  font-size: 14px;
  font-weight: 600;
}

.desktop-nav > a:hover,
.desktop-nav > a[aria-current="page"] {
  color: var(--purple-dark);
  background: transparent;
  box-shadow: inset 0 -2px 0 var(--purple);
}

.desktop-nav .nav-cta,
.mobile-menu .nav-cta {
  color: #fff;
  background: var(--purple-dark);
  box-shadow: none;
}

h1,
h2,
h3 {
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.025em;
}

h1 {
  font-size: clamp(3rem, 5.6vw, 4.9rem);
}

h2 {
  font-size: clamp(2rem, 3.5vw, 3.15rem);
}

h3 {
  font-size: 1.35rem;
}

.eyebrow {
  display: inline-block;
  width: fit-content;
  margin: 0 0 18px;
  padding: 5px 10px 6px;
  color: #fff;
  background: var(--purple);
  border-radius: 2px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0;
  text-transform: none;
}

.eyebrow-dark {
  color: #fff;
  background: var(--purple);
}

.section {
  padding: 82px 0;
}

.section-muted {
  background: #ebe9ed;
}

.section-heading {
  margin-bottom: 40px;
}

.section-heading > p:last-child,
.section-lead,
.prose p {
  font-size: 18px;
}

.button {
  min-height: 47px;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: none;
}

.button:hover {
  transform: none;
}

.button-primary {
  background: var(--purple-dark);
  box-shadow: none;
}

.button-light {
  box-shadow: none;
}

.hero,
.page-hero {
  background: #17131b;
}

.hero::after,
.page-hero::after {
  display: none;
}

.hero-home {
  padding: 92px 0 84px;
  border-bottom: 4px solid var(--purple);
}

.hero-grid {
  grid-template-columns: 1.03fr .97fr;
  gap: 72px;
}

.hero-copy h1 {
  max-width: 700px;
  margin-bottom: 22px;
}

.hero-lead,
.page-hero-inner > p:last-child {
  color: rgba(255, 255, 255, .78);
  font-size: clamp(1.12rem, 1.6vw, 1.3rem);
}

.hero-metrics {
  margin-top: 46px;
}

.hero-metrics dt {
  font-size: 17px;
  font-weight: 700;
}

.hero-metrics dd {
  font-size: 13px;
}

.detector-figure {
  margin: 0;
  border: 1px solid rgba(255, 255, 255, .22);
  background: #0f0d12;
}

.detector-figure svg {
  display: block;
  width: 100%;
  height: auto;
}

.detector-figure figcaption {
  padding: 13px 16px;
  color: rgba(255, 255, 255, .62);
  border-top: 1px solid rgba(255, 255, 255, .16);
  font-size: 13px;
}

.trust-strip {
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.trust-grid span {
  color: #4f4a53;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
}

.feature-card,
.service-card,
.tool-card,
.engagement-card,
.form-panel,
.contact-brief,
.class-feature,
.status-card,
.empty-state {
  border-radius: 3px;
  box-shadow: none;
}

.feature-card {
  min-height: 238px;
  padding: 28px;
}

.card-number {
  display: none;
}

.feature-card h3 {
  margin: 0 0 12px;
}

.feature-card p {
  font-size: 16px;
}

.split-section {
  gap: 72px;
}

.process-list li {
  display: block;
  padding: 24px 0;
}

.process-list li > span,
.principles article > span,
.confirmation-steps li > span,
.process-cards span,
.service-card > span {
  display: none;
}

.process-list strong {
  font-size: 19px;
}

.process-list p {
  margin-top: 5px;
  font-size: 16px;
}

.cta-panel {
  border-radius: 4px;
  background: var(--purple-dark);
  box-shadow: none;
}

.page-hero {
  padding: 88px 0 92px;
  border-bottom: 4px solid var(--purple);
}

.page-hero-compact {
  padding-bottom: 84px;
}

.page-hero h1 {
  max-width: 820px;
  font-size: clamp(2.8rem, 5vw, 4.45rem);
}

.status-label {
  border-radius: 2px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: none;
}

.principles-layout {
  gap: 72px;
}

.principles article {
  display: block;
  padding: 25px 0;
}

.principles h3 {
  margin-bottom: 8px;
}

.engagement-card {
  padding: 38px 40px;
}

.service-metrics {
  border-radius: 2px;
}

.service-card {
  display: block;
  padding: 25px 26px;
}

.service-card h3 {
  margin-bottom: 8px;
}

.service-card p {
  font-size: 16px;
}

.process-cards {
  gap: 0;
  border-top: 1px solid var(--line);
}

.process-cards li {
  padding: 28px 30px;
  border-top: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  box-shadow: none;
}

.process-cards li + li {
  border-left: 1px solid var(--line);
}

.process-cards h3 {
  margin: 0 0 10px;
}

.process-cards p {
  font-size: 16px;
}

.contact-brief {
  background: #1b1720;
}

.field-group input,
.field-group textarea {
  border-radius: 2px;
  background: #fff;
}

.tool-card {
  min-height: 360px;
  padding: 32px;
}

.tool-meta {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: none;
}

.tool-card h2 {
  margin: 66px 0 16px;
}

.class-feature {
  border-radius: 3px;
}

.post-card {
  border-radius: 2px;
}

.empty-state,
.status-card {
  border-radius: 3px;
}

.site-footer {
  background: #111015;
}

@media (max-width: 900px) {
  .container {
    width: min(calc(100% - 36px), var(--container));
  }

  .hero-grid,
  .split-section,
  .principles-layout,
  .engagement-card,
  .class-feature,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .detector-figure {
    max-width: 680px;
  }

  .process-cards {
    grid-template-columns: 1fr;
  }

  .process-cards li + li {
    border-left: 0;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .section {
    padding: 64px 0;
  }

  .hero-home,
  .page-hero {
    padding-top: 68px;
    padding-bottom: 68px;
  }

  h1 {
    font-size: clamp(2.65rem, 12vw, 3.75rem);
  }

  .trust-grid {
    grid-template-columns: 1fr;
    padding: 12px 0;
  }

  .trust-grid span {
    padding: 9px 0;
  }

  .trust-grid span + span {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .feature-card,
  .service-card,
  .tool-card,
  .engagement-card,
  .form-panel,
  .contact-brief {
    padding: 24px;
  }
}