.mk {
  --ink: #0f172a; --muted: #64748b; --line: #e2e8f0; --paper: #fffdf8;
  --brass: #b7791f; --up: #15803d; --down: #b91c1c;
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.55;
}
.mk main { max-width: 1040px; margin: 0 auto; padding: 0 24px; }
.mk-nav { max-width: 1040px; margin: 0 auto; padding: 22px 24px; }
.mk-logo { font-weight: 800; font-size: 20px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }

.mk-hero { text-align: center; padding: 56px 0 40px; }
.mk-eyebrow { color: var(--brass); font-weight: 600; font-size: 14px; letter-spacing: .04em; text-transform: uppercase; margin: 0; }
.mk-hero h1 { font-size: clamp(36px, 6vw, 60px); line-height: 1.05; letter-spacing: -.03em; margin: 14px auto 18px; max-width: 14ch; }
.mk-lede { font-size: 19px; color: #334155; max-width: 60ch; margin: 0 auto; }
.mk-invite { margin-top: 26px; display: inline-block; padding: 8px 16px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; color: var(--muted); background: #fff; }

.mk-sample { padding: 20px 0 56px; }
.mk-email { max-width: 680px; margin: 0 auto; background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 24px 60px -24px rgba(15, 23, 42, .25); overflow: hidden; }
.mk-email-bar { display: flex; justify-content: space-between; padding: 12px 20px; font-size: 13px; color: var(--muted); border-bottom: 1px solid var(--line); background: #f8fafc; }
.mk-email-body { padding: 22px 26px 26px; }
.mk-email-body h2 { margin: 2px 0 16px; font-size: 24px; letter-spacing: -.01em; }
.mk-email-kicker { margin: 18px 0 6px; font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); }
.mk-email-kicker:first-child { margin-top: 0; }
.mk-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mk-tiles div { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; background: #f8fafc; display: grid; }
.mk-tiles span { font-size: 12px; color: var(--muted); }
.mk-tiles strong { font-size: 17px; }
.mk-tiles em { font-style: normal; font-weight: 600; font-size: 14px; }
.mk-breadth { font-size: 14px; color: #334155; margin: 16px 0 10px; }
.mk-email table { width: 100%; border-collapse: collapse; font-size: 14px; }
.mk-email th { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); text-align: right; padding: 6px 8px; border-bottom: 2px solid var(--line); }
.mk-email td { text-align: right; padding: 7px 8px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.mk-email th:first-child, .mk-email td:first-child { text-align: left; font-weight: 700; }
.mk-email ul { margin: 0; padding-left: 20px; font-size: 14px; }
.mk .up { color: var(--up); }
.mk .down { color: var(--down); }
.mk-caption { text-align: center; font-size: 13px; color: var(--muted); margin-top: 14px; }

.mk-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 40px; padding: 24px 0 48px; border-top: 1px solid var(--line); }
.mk-features h3 { margin: 18px 0 6px; font-size: 18px; }
.mk-features p { margin: 0; color: #475569; }

.mk-status { text-align: center; padding: 22px; margin-bottom: 40px; background: #fff; border: 1px solid var(--line); border-radius: 12px; color: #334155; }
.mk-status p { margin: 0; }

.mk-narrow { max-width: 480px; margin: 48px auto; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 8px 28px 28px; }
.mk-narrow button { padding: 10px 18px; border-radius: 8px; border: 0; background: var(--ink); color: #fff; font-size: 15px; cursor: pointer; }

.mk-footer { text-align: center; color: var(--muted); font-size: 13px; padding: 24px; border-top: 1px solid var(--line); }

@media (max-width: 640px) {
  .mk-features { grid-template-columns: 1fr; }
  .mk-tiles { grid-template-columns: 1fr; }
  .mk-email th:nth-child(4), .mk-email td:nth-child(4), .mk-email th:nth-child(6), .mk-email td:nth-child(6) { display: none; }
}