:root {
  color-scheme: light dark;
  --page: #f5f5f0;
  --surface: #ffffff;
  --ink: #202823;
  --muted: #677068;
  --line: #daddd4;
  --accent: #28634b;
  --accent-hover: #194b36;
  --on-accent: #ffffff;
  --soft: #e7ece3;
  --max-width: 1180px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #181e1a;
    --surface: #242d27;
    --ink: #edf0e9;
    --muted: #abb5aa;
    --line: #3c473f;
    --accent: #aed3b5;
    --accent-hover: #c8e3cc;
    --on-accent: #183925;
    --soft: #28392d;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--page); color: var(--ink); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: 4px; }
a:hover { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 3px; }
img { display: block; max-width: 100%; }
.shell { width: min(var(--max-width), calc(100% - 96px)); margin-inline: auto; }
.site-header { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 22px; font-weight: 650; letter-spacing: -.7px; }
.brand img { border-radius: 9px; }
.header-links, .footer-links { display: flex; align-items: center; gap: 32px; font-size: 14px; }
.header-links a, .footer-links a { text-decoration: none; }
.header-links .download-small { border: 1px solid var(--line); border-radius: 7px; padding: 8px 14px; }
.header-links .download-small:hover { border-color: var(--accent); }
.hero { padding: 86px 0 62px; }
.eyebrow { margin: 0 0 24px; color: var(--accent); font-size: 12px; font-weight: 650; letter-spacing: 1.4px; line-height: 1.5; text-transform: uppercase; }
.status-dot { display: inline-block; width: 6px; height: 6px; margin: 0 8px 1px 0; border-radius: 50%; background: var(--accent); }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-weight: 500; letter-spacing: -.045em; }
.hero h1 { max-width: 800px; margin-bottom: 28px; font-size: clamp(48px, 6.2vw, 82px); line-height: 1.08; }
.hero-copy { max-width: 470px; margin-bottom: 34px; color: var(--muted); font-size: 18px; line-height: 1.7; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 26px; min-height: 50px; padding: 12px 21px; border-radius: 7px; text-decoration: none; font-size: 14px; font-weight: 550; }
.button-primary { background: var(--accent); color: var(--on-accent); }
.button-primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.text-link { font-size: 14px; text-decoration: none; }
.download-note { margin: 16px 0 0; color: var(--muted); font-size: 11px; }
.mail-preview { padding: 26px 0 108px; }
.preview-caption { display: flex; align-items: center; gap: 20px; margin-bottom: 20px; color: var(--muted); font-size: 11px; }
.preview-caption > :last-child { white-space: nowrap; }
.caption-rule { flex: 1; height: 1px; background: var(--line); }
.mailbox-screenshot { width: 100%; height: auto; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 18px 50px -32px #0006; }
.features { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; padding: 52px 0 128px; border-top: 1px solid var(--line); }
.features h2, .closing h2 { margin-bottom: 28px; font-size: clamp(36px, 4.3vw, 54px); line-height: 1.16; }
.section-heading > p:last-child { max-width: 330px; color: var(--muted); font-size: 15px; }
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px 40px; }
.feature-number { display: block; margin-bottom: 30px; color: var(--accent); font-size: 12px; font-variant-numeric: tabular-nums; }
.feature h3 { margin-bottom: 13px; font-size: 20px; letter-spacing: -.025em; }
.feature p { margin-bottom: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.closing { display: flex; align-items: center; justify-content: space-between; gap: 60px; padding: 65px 0 92px; border-top: 1px solid var(--line); }
.closing h2 { margin-bottom: 0; }
.closing-action { display: flex; flex-direction: column; align-items: flex-start; gap: 24px; padding-top: 25px; }
.site-footer { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px; padding: 36px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-brand { display: flex; flex-direction: column; gap: 3px; }
.footer-brand .brand-name { color: var(--ink); font-size: 18px; font-weight: 600; letter-spacing: -.03em; }
.footer-links { gap: 24px; font-size: 12px; }
.legal-note { grid-column: 1 / -1; max-width: 720px; margin: 8px 0 0; font-size: 10px; line-height: 1.7; }
.document { max-width: 800px; padding: 64px 0 80px; }
.document-heading { margin-bottom: 55px; padding-bottom: 35px; border-bottom: 1px solid var(--line); }
.document h1 { margin-bottom: 10px; font-size: clamp(42px, 7vw, 66px); line-height: 1.1; }
.effective-date { margin-bottom: 30px; color: var(--muted); font-size: 13px; }
.document-intro { margin-bottom: 0; font-size: 18px; line-height: 1.8; }
.document section { margin-bottom: 38px; }
.document h2 { margin-bottom: 16px; font-size: 25px; line-height: 1.3; letter-spacing: -.03em; }
.document h3 { margin: 24px 0 8px; font-size: 17px; letter-spacing: -.02em; }
.document p, .document li { font-size: 15px; line-height: 1.85; }
.document p { margin-bottom: 16px; }
.document ul { padding-left: 24px; }
.document li { margin-bottom: 10px; padding-left: 5px; }
.document a { text-decoration-color: var(--line); }
.document + .site-footer { max-width: var(--max-width); }

@media (max-width: 800px) {
  .shell { width: calc(100% - 48px); }
  .site-header { min-height: 80px; }
  .header-links { gap: 20px; }
  .header-links > a:first-child { display: none; }
  .hero { padding: 62px 0 48px; }
  .mail-preview { padding-bottom: 70px; }
  .features { grid-template-columns: 1fr; gap: 48px; padding-bottom: 75px; }
  .section-heading > p:last-child { max-width: 500px; }
  .closing { align-items: flex-start; flex-direction: column; gap: 20px; padding-bottom: 65px; }
  .closing-action { padding-top: 0; }
  .document { padding-top: 40px; }
}

@media (max-width: 480px) {
  .shell { width: calc(100% - 32px); }
  .site-header { gap: 16px; }
  .brand { font-size: 20px; }
  .brand img { width: 32px; height: 32px; }
  .header-links { gap: 15px; font-size: 12px; }
  .header-links .download-small { padding: 6px 10px; }
  .hero { padding-top: 45px; }
  .hero h1 { font-size: 45px; }
  .hero-copy { font-size: 16px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 22px; }
  .download-note { max-width: 260px; line-height: 1.7; }
  .preview-caption { gap: 12px; font-size: 9px; }
  .mailbox-screenshot { border-radius: 5px; }
  .feature-grid { gap: 40px 24px; }
  .feature-number { margin-bottom: 20px; }
  .feature h3 { font-size: 17px; }
  .feature p { font-size: 13px; }
  .site-footer { grid-template-columns: 1fr; align-items: start; }
  .footer-links { flex-wrap: wrap; gap: 20px; }
  .legal-note { margin-top: 0; }
  .document-intro { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}