:root {
  color-scheme: light;
  --ink: #171918;
  --muted: #666c69;
  --faint: #8b918e;
  --line: #e5e8e6;
  --soft: #f5f7f6;
  --blue: #1769e0;
  --green: #168555;
  --max: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #ffffff;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--blue);
  text-underline-offset: 3px;
}

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(229, 232, 230, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(calc(100% - 40px), var(--max));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--ink);
}

main {
  min-height: calc(100vh - 190px);
}

.hero {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 76px 0 0;
  text-align: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  margin-bottom: 16px;
  font-size: 70px;
  font-weight: 740;
}

h2 {
  margin-bottom: 18px;
  font-size: 30px;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.hero-lead {
  max-width: 700px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 19px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 42px;
}

.button {
  min-height: 44px;
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  background: #ffffff;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.button.primary {
  border-color: var(--ink);
  color: #ffffff;
  background: var(--ink);
}

.product-shot {
  width: min(100%, 980px);
  margin: 0 auto;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
  box-shadow: 0 20px 70px rgba(18, 30, 24, 0.09);
}

@media (min-width: 760px) {
  .product-shot {
    height: 300px;
    object-fit: cover;
    object-position: top;
  }
}

.band {
  border-top: 1px solid var(--line);
  padding: 84px 0;
}

.band.soft {
  background: var(--soft);
}

.section-inner {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.section-heading {
  max-width: 650px;
  margin-bottom: 42px;
}

.section-heading p {
  margin: 0;
  color: var(--muted);
}

.steps,
.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px;
}

.step,
.fact {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.step-number {
  display: block;
  margin-bottom: 20px;
  color: var(--faint);
  font: 600 13px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.step p,
.fact p {
  margin: 0;
  color: var(--muted);
}

.security-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 72px;
  align-items: start;
}

.security-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.security-list li {
  border-top: 1px solid #dfe3e1;
  padding: 17px 0;
}

.security-list strong {
  display: block;
  margin-bottom: 4px;
}

.security-list span {
  color: var(--muted);
}

.legal {
  width: min(calc(100% - 40px), 820px);
  margin: 0 auto;
  padding: 68px 0 96px;
}

.legal-header {
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.legal h1 {
  margin-bottom: 10px;
  font-size: 38px;
}

.updated {
  margin: 0;
  color: var(--faint);
  font-size: 14px;
}

.legal section {
  padding-top: 36px;
}

.legal h2 {
  margin-bottom: 14px;
  font-size: 23px;
}

.legal h3 {
  margin-top: 24px;
}

.legal p,
.legal li {
  color: #3f4542;
}

.legal ul,
.legal ol {
  padding-left: 1.4em;
}

.legal li + li {
  margin-top: 8px;
}

.notice {
  margin: 28px 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--blue);
  background: var(--soft);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.data-table th,
.data-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

.data-table th {
  color: var(--muted);
  font-weight: 650;
}

.support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 30px 0 42px;
  color: var(--faint);
  font-size: 13px;
}

.footer-inner {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 28px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

@media (max-width: 760px) {
  .nav {
    min-height: 58px;
  }

  .nav-links a:not(:last-child) {
    display: none;
  }

  .hero {
    padding-top: 54px;
  }

  h1 {
    font-size: 42px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .band {
    padding: 60px 0;
  }

  .steps,
  .facts,
  .security-layout {
    grid-template-columns: 1fr;
  }

  .security-layout {
    gap: 34px;
  }

  .legal {
    padding-top: 46px;
  }

  .legal h1 {
    font-size: 32px;
  }

  .data-table {
    display: block;
    overflow-x: auto;
  }

  .footer-inner {
    flex-direction: column;
  }
}