:root {
  color-scheme: light;
  --ink: #163232;
  --muted: #536b6a;
  --brand: #337373;
  --brand-dark: #245b5b;
  --brand-soft: #dfeeed;
  --canvas: #f4f7f6;
  --surface: #ffffff;
  --line: #d8e3e1;
  --shadow: 0 18px 50px rgba(28, 70, 69, 0.10);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { background: var(--canvas); scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--ink); background: var(--canvas); font-size: 17px; line-height: 1.65; }
a { color: var(--brand-dark); text-underline-offset: 0.18em; }
a:hover { color: var(--brand); }
a:focus-visible { outline: 3px solid rgba(51, 115, 115, 0.32); outline-offset: 4px; border-radius: 4px; }
img { display: block; max-width: 100%; }

.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(216, 227, 225, 0.9); background: rgba(244, 247, 246, 0.94); backdrop-filter: blur(18px); }
.header-inner, .page-shell, .footer-inner { width: min(100% - 40px, 1040px); margin-inline: auto; }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); font-weight: 720; text-decoration: none; letter-spacing: -0.02em; }
.brand-mark { width: 34px; height: 34px; border-radius: 9px; box-shadow: 0 5px 15px rgba(28, 70, 69, 0.14); }
.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a { padding: 8px 12px; border-radius: 999px; color: var(--muted); font-size: 0.94rem; font-weight: 620; text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--brand-dark); background: var(--brand-soft); }

.page-shell { padding-block: 72px 88px; }
.hero { min-height: calc(100vh - 161px); display: grid; grid-template-columns: 1.18fr 0.82fr; gap: clamp(36px, 7vw, 86px); align-items: center; }
.eyebrow { margin: 0 0 12px; color: var(--brand); font-size: 0.82rem; font-weight: 760; letter-spacing: 0.12em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; color: var(--ink); letter-spacing: -0.035em; line-height: 1.14; }
h1 { max-width: 760px; font-size: clamp(2.65rem, 6vw, 5.4rem); }
h2 { margin-top: 48px; font-size: clamp(1.55rem, 3vw, 2.25rem); }
h3 { margin-top: 28px; font-size: 1.15rem; letter-spacing: -0.015em; }
p { margin: 14px 0 0; }
.lede { max-width: 700px; margin-top: 24px; color: var(--muted); font-size: clamp(1.12rem, 2vw, 1.34rem); line-height: 1.55; }
.notice { margin-top: 28px; padding: 18px 20px; border: 1px solid #c9dcda; border-radius: 18px; background: var(--brand-soft); color: #204c4b; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 48px; padding: 11px 18px; border: 1px solid var(--brand); border-radius: 14px; background: var(--brand); color: #fff; font-weight: 700; text-decoration: none; }
.button:hover { color: #fff; background: var(--brand-dark); }
.button.secondary { border-color: var(--line); color: var(--brand-dark); background: var(--surface); }
.button.secondary:hover { color: var(--brand-dark); border-color: #b8cecb; background: #fbfdfc; }
.icon-stage { position: relative; display: grid; place-items: center; min-height: 420px; }
.icon-stage::before { content: ""; position: absolute; width: 310px; height: 310px; border-radius: 50%; background: var(--brand-soft); filter: blur(2px); }
.app-icon { position: relative; width: min(240px, 58vw); border-radius: 23%; box-shadow: 0 32px 70px rgba(31, 78, 77, 0.22); }

.article { max-width: 760px; }
.article h1 { font-size: clamp(2.35rem, 5vw, 4.3rem); }
.meta { margin-top: 14px; color: var(--muted); font-size: 0.94rem; }
.article section { padding-top: 8px; }
ul, ol { margin: 14px 0 0; padding-left: 1.35em; }
li + li { margin-top: 8px; }
.policy-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 24px; }
.policy-card { padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); box-shadow: 0 10px 30px rgba(28, 70, 69, 0.05); }
.policy-card h3 { margin-top: 0; }
.faq { margin-top: 28px; border-top: 1px solid var(--line); }
.faq-item { padding: 24px 0; border-bottom: 1px solid var(--line); }
.faq-item h2 { margin: 0; font-size: 1.24rem; letter-spacing: -0.015em; }
.contact-card { margin-top: 42px; padding: 26px; border: 1px solid #c9dcda; border-radius: 22px; background: var(--brand-soft); }
.contact-card h2 { margin-top: 0; }

.site-footer { border-top: 1px solid var(--line); background: #edf3f2; }
.footer-inner { min-height: 88px; display: flex; justify-content: space-between; align-items: center; gap: 18px; color: var(--muted); font-size: 0.91rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-links a { color: var(--muted); }

@media (max-width: 760px) {
  .header-inner, .page-shell, .footer-inner { width: min(100% - 28px, 1040px); }
  .header-inner { min-height: 66px; }
  .brand span { display: none; }
  .site-nav { gap: 2px; }
  .site-nav a { padding: 8px 9px; font-size: 0.88rem; }
  .page-shell { padding-block: 48px 64px; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 46px; }
  .icon-stage { min-height: 290px; order: -1; }
  .icon-stage::before { width: 230px; height: 230px; }
  .app-icon { width: 174px; }
  .actions { display: grid; }
  .button { width: 100%; }
  .policy-grid { grid-template-columns: 1fr; }
  .footer-inner { padding-block: 22px; align-items: flex-start; flex-direction: column; }
}

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