/* ris-sec.com — No JavaScript, no trackers, no third-party calls. */

:root {
  --navy-900: #1b2d45;
  --navy-700: #2a4061;
  --navy-600: #375d81;
  --navy-100: #e8edf2;
  --navy-50: #f4f6f8;
  --text: #1a1a2e;
  --text-secondary: #4a5568;
  --accent: #c9a227;
  --white: #ffffff;
  --border: #d1d9e0;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

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

html {
  font-size: 106.25%; /* 17px */
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--navy-50);
  line-height: 1.7;
}

h1, h2, h3 {
  line-height: 1.25;
}

h1 {
  color: var(--navy-700);
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 0;
}

h2 {
  color: var(--navy-600);
  font-size: 1.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 2.5rem;
}

p {
  margin: 0 0 1.25rem;
}

a {
  color: var(--navy-700);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--navy-900);
  text-decoration-thickness: 2px;
}

/* Layout */

.container {
  max-width: 72ch;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */

.site-nav {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-nav img {
  height: 40px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--navy-700);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}

.nav-links a:hover {
  border-bottom-color: var(--accent);
}

/* Hero / intro */

.hero {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

/* Card */

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: 6px;
  padding: 2rem;
  margin-bottom: 2rem;
}

/* Services list */

.services-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.services-list li {
  padding: 0.75rem 0 0.75rem 1.75rem;
  position: relative;
  border-bottom: 1px solid var(--navy-100);
}

.services-list li:last-child {
  border-bottom: none;
}

.services-list li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* Case study links */

.case-study-link {
  display: block;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 3px solid var(--navy-700);
  border-radius: 4px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, background 0.2s;
}

.case-study-link:hover {
  border-left-color: var(--accent);
  background: var(--navy-50);
  color: var(--text);
}

.cs-number {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.cs-title {
  font-weight: 600;
  color: var(--navy-700);
}

/* Contact CTA */

.contact-cta {
  text-align: center;
  padding: 2.5rem 2rem;
  background: var(--navy-700);
  color: var(--white);
  border-radius: 6px;
  margin-top: 3rem;
}

.contact-cta .availability {
  font-style: italic;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.contact-cta a {
  color: var(--white);
  font-weight: 600;
  border-bottom: 1px solid var(--accent);
  text-decoration: none;
  margin: 0 1rem;
}

.contact-cta a:hover {
  border-bottom-width: 2px;
}

/* Back link (case study pages) */

.back-link {
  display: inline-block;
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-weight: 500;
  color: var(--navy-600);
}

.back-link::before {
  content: "\2190\00a0";
}

/* Footer */

.site-footer {
  background: var(--navy-900);
  color: var(--navy-100);
  text-align: center;
  padding: 2rem 1.5rem;
  margin-top: 4rem;
  font-size: 0.875rem;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--navy-100);
}

/* Article (case studies) */

article {
  margin-top: 2.5rem;
}

/* Responsive */

@media (max-width: 768px) {
  html {
    font-size: 93.75%; /* 15px */
  }

  h1 {
    font-size: 1.95rem;
  }

  h2 {
    font-size: 1.56rem;
  }

  .site-nav .container {
    flex-direction: column;
    align-items: flex-start;
  }

  .card {
    padding: 1.25rem;
  }

  .contact-cta {
    padding: 1.5rem 1rem;
  }

  .contact-cta a {
    display: block;
    margin: 0.75rem 0;
  }
}

/* Print */

@media print {
  .site-nav, .site-footer {
    display: none;
  }

  body {
    color: #000;
    background: #fff;
    font-size: 12pt;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }
}