:root {
  --syniva-blue: #3022b8;
  --syniva-dark: #17152a;
  --syniva-green: #c5fd00;
  --syniva-muted: #625f71;
  --syniva-border: #dedcea;
}

* { box-sizing: border-box; }
html { color-scheme: light; font-family: Arial, Helvetica, sans-serif; }
body { margin: 0; color: var(--syniva-dark); background: #fff; }
a { color: inherit; }
.shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.topbar { border-bottom: 1px solid var(--syniva-border); background: #fff; }
.topbar .shell { display: flex; min-height: 68px; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: var(--syniva-blue); font-size: 1.3rem; font-weight: 800; text-decoration: none; }
.topnav { display: flex; flex-wrap: wrap; gap: 14px; font-size: .9rem; }
.topnav a, .breadcrumbs a { text-underline-offset: 3px; }
.breadcrumbs { display: flex; gap: 8px; margin: 24px 0; color: var(--syniva-muted); font-size: .9rem; }
.hero { padding: clamp(28px, 4vw, 48px); border: 1px solid var(--syniva-border); border-radius: 20px; background: #f6f5fb; }
.eyebrow { margin: 0 0 12px; color: var(--syniva-blue); font-size: .82rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
h1 { max-width: 850px; margin: 0; font-size: clamp(2rem, 6vw, 4rem); line-height: 1.05; }
.hero h1 { color: var(--syniva-blue); }
.lead { max-width: 800px; margin: 22px 0 0; font-size: clamp(1.05rem, 2vw, 1.35rem); line-height: 1.6; }
.reviewed { margin: 22px 0 0; color: var(--syniva-muted); font-size: .85rem; }
main section { margin: clamp(42px, 7vw, 76px) 0; }
h2 { color: var(--syniva-blue); font-size: clamp(1.55rem, 3vw, 2.25rem); }
h3 { color: var(--syniva-blue); }
p, li { font-size: 1rem; line-height: 1.7; }
.grid, .steps, .related { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.card, .step, .notice, details { padding: 22px; border: 1px solid var(--syniva-border); border-radius: 18px; background: #fff; }
.step strong { display: block; margin-bottom: 8px; color: var(--syniva-blue); }
.notice { border-left: 6px solid var(--syniva-green); background: #f9fbea; }
.table-wrap { overflow-x: auto; border: 1px solid var(--syniva-border); border-radius: 18px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 15px; border-bottom: 1px solid #eceaf3; text-align: left; vertical-align: top; }
th { color: var(--syniva-blue); background: #f3f1fb; }
details + details { margin-top: 12px; }
summary { color: var(--syniva-blue); cursor: pointer; font-weight: 750; }
.cta { display: inline-flex; min-height: 48px; margin-top: 14px; padding: 12px 20px; align-items: center; border-radius: 999px; background: var(--syniva-blue); color: #fff; font-weight: 750; text-decoration: none; }
.related a { padding: 20px; border: 1px solid var(--syniva-border); border-radius: 16px; color: var(--syniva-blue); font-weight: 750; text-decoration: none; }
.store-list { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; list-style: none; }
.store-list li { padding: 9px 14px; border: 1px solid var(--syniva-border); border-radius: 999px; background: #fff; font-weight: 700; }
footer { margin-top: 72px; padding: 30px 0; border-top: 1px solid var(--syniva-border); color: var(--syniva-muted); font-size: .9rem; }
@media (max-width: 700px) {
  .shell { width: min(100% - 20px, 1120px); }
  .topbar .shell { align-items: flex-start; flex-direction: column; padding: 16px 0; }
  .grid, .steps, .related { grid-template-columns: 1fr; }
  .hero { border-radius: 20px; }
  th, td { min-width: 135px; padding: 12px; }
}