:root {
  --paper: #faf8f5;
  --ink: #1e1b4b;
  --muted: #475569;
  --indigo-soft: #eef2ff;
  --teal: #0d9488;
  --teal-dark: #042f2e;
  --orange: #ea580c;
  --violet: #6d28d9;
  --border: #c7d2fe;
  --focus: #f59e0b;
  --max: 68rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  line-height: 1.6;
  color: var(--ink);
  background: linear-gradient(180deg, #fff 0%, var(--paper) 28%, #f1f5f9 100%);
}

a {
  color: var(--teal);
}

a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--focus);
  color: #111;
  padding: 0.5rem 1rem;
  z-index: 99;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.masthead {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem 1.1rem 0.5rem;
  background: linear-gradient(135deg, #fff 0%, var(--indigo-soft) 55%, #fff 100%);
  border-bottom: 3px solid var(--teal);
}

.eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 700;
}

.masthead h1 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.55rem, 5vw, 2.35rem);
  line-height: 1.2;
  color: var(--ink);
}

.intro {
  margin: 0 0 1rem;
  max-width: 38rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.action-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.85rem;
}

.jump-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.75rem;
}

.jump-nav a {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.65rem;
  background: #fff;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.1rem 2.5rem;
}

.case {
  display: grid;
  gap: 1.25rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.15rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 8px 24px rgba(30, 27, 75, 0.06);
}

.case-eeg {
  border-top: 4px solid var(--teal);
}

.case-ops {
  border-top: 4px solid var(--orange);
}

.case-reach {
  border-top: 4px solid var(--violet);
}

@media (min-width: 860px) {
  .case {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }
}

.case h2 {
  margin: 0 0 0.35rem;
  color: var(--ink);
}

.case-lede {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-weight: 600;
}

.try-line {
  margin: 0.85rem 0 0.5rem;
}

.note {
  font-size: 0.92rem;
  color: var(--muted);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.55rem 1rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-teal {
  background: var(--teal);
  color: #ecfdf5;
}

.btn-orange {
  background: var(--orange);
  color: #fff7ed;
}

.btn-violet {
  background: var(--violet);
  color: #f5f3ff;
}

.btn-ghost {
  border-color: var(--border);
  color: var(--ink);
  background: #fff;
}

.case-media img {
  width: 100%;
  height: auto;
  border-radius: 0.6rem;
  border: 1px solid var(--border);
}

.case-media a:hover img {
  box-shadow: 0 6px 20px rgba(30, 27, 75, 0.12);
}

.case-media figcaption {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.35rem;
}

.ai-note {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0.5rem 0 0;
}

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.1rem 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 480px) {
  .masthead {
    padding-top: 1rem;
  }

  .action-strip .btn {
    flex: 1 1 100%;
    text-align: center;
  }

  .case {
    padding: 1rem;
  }
}