:root {
  color-scheme: dark;
  --a-violet: #9b7cff;
  --a-ice: #d8d1ff;
  --a-line: rgba(190, 174, 255, .18);
  --a-glass: rgba(21, 18, 31, .72);
}

.assurance-shell { max-width: 980px; margin: 0 auto; padding-bottom: 72px; }
.assurance-shell h1 { max-width: 820px; font-size: clamp(2.2rem, 7vw, 4.8rem); line-height: .98; letter-spacing: -.055em; }
.eyebrow { color: var(--a-violet); font-size: .72rem; letter-spacing: .19em; text-transform: uppercase; }
.lede { max-width: 720px; color: rgba(255,255,255,.72); font-size: clamp(1rem, 2.3vw, 1.22rem); line-height: 1.65; }
.evidence-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(230px,1fr)); gap: 12px; margin: 40px 0; }
.evidence-card { position: relative; display: flex; min-height: 160px; flex-direction: column; gap: 10px; padding: 22px; overflow: hidden; color: #f8f6ff; text-decoration: none; border: 1px solid var(--a-line); border-radius: 24px; background: radial-gradient(circle at 85% 12%,rgba(155,124,255,.18),transparent 42%),var(--a-glass); box-shadow: inset 0 1px rgba(255,255,255,.045),0 18px 70px rgba(0,0,0,.22); }
.evidence-card::after { content: "↗"; position: absolute; right: 18px; top: 16px; color: rgba(216,209,255,.65); }
.evidence-card:hover { border-color: rgba(190,174,255,.46); transform: translateY(-2px); }
.evidence-card strong { max-width: 80%; font-size: 1.08rem; }
.evidence-card small { color: rgba(255,255,255,.57); line-height: 1.45; }
.tag { color: var(--a-ice); font-size: .64rem; letter-spacing: .16em; }
.boundary { margin-top: 28px; padding: 28px; border-left: 1px solid var(--a-violet); background: linear-gradient(90deg,rgba(155,124,255,.08),transparent); }
.boundary h2 { margin-top: 8px; }
.boundary p:last-child { max-width: 760px; color: rgba(255,255,255,.7); line-height: 1.6; }

@media (max-width: 600px) {
  .assurance-shell { padding-inline: 18px; }
  .evidence-card { min-height: 142px; border-radius: 20px; }
}