:root {
  --blue: #007aff;
  --blue-pressed: #0068d8;
  --aqua: #34aadc;
  --ink: #1f1f21;
  --subtle-ink: #6d6d72;
  --line: #d9d9dc;
  --pale-line: #e9e9eb;
  --canvas: #f7f7f7;
  --panel: #ffffff;
  --soft-blue: #f1f8ff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

a:focus-visible {
  outline: 3px solid rgba(0, 122, 255, 0.38);
  outline-offset: 3px;
}

.site-width { width: min(1080px, calc(100% - 48px)); margin: 0 auto; }

.site-header {
  position: sticky;
  z-index: 5;
  top: 0;
  border-bottom: 1px solid rgba(217, 217, 220, 0.88);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(18px);
}

.navigation {
  display: flex;
  min-height: 62px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 600; letter-spacing: -0.02em; }

.brand-icon,
.summary-icon {
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  color: #fff;
  background: var(--blue);
  font-weight: 700;
}

.brand-icon { width: 28px; height: 28px; border-radius: 7px; font-size: 16px; }

nav { display: flex; align-items: stretch; align-self: stretch; gap: 22px; }

nav a {
  display: inline-flex;
  align-items: center;
  border-bottom: 2px solid transparent;
  color: var(--subtle-ink);
  font-size: 14px;
  transition: color 160ms ease, border-color 160ms ease;
}

nav a:hover,
nav a[aria-current="page"] { color: var(--blue); border-bottom-color: var(--blue); }

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.24fr) minmax(290px, 0.76fr);
  gap: clamp(42px, 8vw, 112px);
  align-items: center;
  min-height: 550px;
  padding: 82px 0 74px;
}

.kicker,
.section-caption {
  margin: 0;
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.intro h1,
.section-heading h2,
.policy h1 { margin: 14px 0 0; font-weight: 400; letter-spacing: -0.055em; }

.intro h1 { max-width: 680px; font-size: clamp(38px, 5vw, 62px); line-height: 1.19; }

.lead { max-width: 620px; margin: 26px 0 0; color: var(--subtle-ink); font-size: 17px; line-height: 1.9; }

.action-row { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 33px; }

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 21px;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 500;
  transition: background 160ms ease, transform 160ms ease;
}

.button-primary { color: #fff; background: var(--blue); }
.button-primary:hover { background: var(--blue-pressed); transform: translateY(-1px); }

.text-link { color: var(--blue); font-size: 15px; font-weight: 500; }
.text-link span { padding-left: 3px; font-size: 20px; line-height: 0; vertical-align: -1px; }
.text-link:hover, .support-address:hover, .site-footer a:hover { color: var(--blue-pressed); text-decoration: underline; text-underline-offset: 3px; }

.app-summary {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}

.summary-heading { display: flex; gap: 15px; align-items: center; padding: 25px 25px 22px; background: var(--soft-blue); }
.summary-icon { width: 46px; height: 46px; border-radius: 11px; font-size: 23px; }
.summary-heading p { margin: 0 0 3px; color: var(--subtle-ink); font-size: 10px; font-weight: 600; letter-spacing: 0.11em; }
.summary-heading h2 { margin: 0; font-size: 21px; font-weight: 400; letter-spacing: -0.03em; }

.summary-list { margin: 0; }
.summary-list div { display: flex; justify-content: space-between; gap: 20px; padding: 15px 25px; border-top: 1px solid var(--pale-line); }
.summary-list dt { color: var(--subtle-ink); font-size: 14px; }
.summary-list dd { margin: 0; color: var(--ink); font-size: 14px; font-weight: 500; text-align: right; }

.feature-section,
.support-section { border-top: 1px solid var(--line); background: var(--panel); }
.feature-section { padding: 77px 0 80px; }
.section-heading h2 { font-size: clamp(28px, 3vw, 38px); line-height: 1.3; }

.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 37px; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.feature-item { display: flex; gap: 15px; min-height: 190px; padding: 26px 24px; background: #fff; }
.feature-item + .feature-item { border-left: 1px solid var(--line); }
.feature-number { display: inline-grid; flex: 0 0 auto; place-items: center; width: 27px; height: 27px; border-radius: 50%; color: var(--blue); border: 1px solid #b4d8fa; font-size: 13px; font-weight: 600; }
.feature-item h3,
.support-item h3 { margin: 2px 0 12px; font-size: 17px; font-weight: 500; letter-spacing: -0.02em; }
.feature-item p,
.support-item p,
.about-copy { margin: 0; color: var(--subtle-ink); font-size: 14px; line-height: 1.85; }

.about-section { padding: 77px 0 79px; }
.about-copy { max-width: 800px; margin-top: 26px; font-size: 17px; }

.support-section { padding: 77px 0 80px; }
.support-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 37px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.support-item { min-height: 196px; padding: 25px 25px 28px; }
.support-item + .support-item { border-left: 1px solid var(--line); }
.support-address { display: inline-block; margin-top: 16px; color: var(--blue); font-size: 15px; font-weight: 500; }
.support-item .text-link { display: inline-block; margin-top: 16px; }

.site-footer { border-top: 1px solid var(--line); background: var(--canvas); }
.footer-content { display: flex; min-height: 86px; align-items: center; justify-content: space-between; gap: 20px; color: var(--subtle-ink); font-size: 13px; }
.footer-content p { margin: 0; }
.footer-content div { display: flex; gap: 20px; }

.policy { max-width: 800px; padding-top: 80px; padding-bottom: 92px; }
.policy h1 { font-size: clamp(36px, 5vw, 52px); line-height: 1.2; }
.policy-lead { max-width: 650px; margin: 28px 0 0; color: var(--subtle-ink); font-size: 16px; line-height: 1.9; }
.policy section { padding: 34px 0; border-bottom: 1px solid var(--line); }
.policy section:first-of-type { margin-top: 33px; border-top: 1px solid var(--line); }
.policy h2 { margin: 0 0 16px; font-size: 20px; font-weight: 500; letter-spacing: -0.02em; }
.policy section p,
.policy li { color: var(--subtle-ink); font-size: 15px; line-height: 1.9; }
.policy section p { margin: 0; }
.policy ul { margin: 12px 0 0; padding-left: 1.35em; }
.policy .support-address { margin-top: 13px; }

@media (max-width: 760px) {
  .site-width { width: min(100% - 32px, 1080px); }
  .navigation { min-height: 57px; gap: 12px; }
  .brand { font-size: 15px; }
  .brand-icon { width: 25px; height: 25px; font-size: 14px; }
  nav { gap: 14px; }
  nav a { font-size: 12px; }
  .intro { grid-template-columns: 1fr; gap: 42px; min-height: auto; padding: 60px 0; }
  .intro h1 { font-size: clamp(34px, 10vw, 48px); }
  .lead { font-size: 16px; }
  .app-summary { max-width: 470px; }
  .feature-section, .about-section, .support-section { padding-top: 58px; padding-bottom: 60px; }
  .feature-list, .support-list { grid-template-columns: 1fr; }
  .feature-item { min-height: 0; padding: 22px 20px; }
  .feature-item + .feature-item, .support-item + .support-item { border-top: 1px solid var(--line); border-left: 0; }
  .support-item { min-height: 0; padding: 23px 20px; }
  .footer-content { min-height: 94px; flex-direction: column; justify-content: center; align-items: flex-start; gap: 10px; }
  .policy { padding-top: 58px; padding-bottom: 64px; }
}

@media (max-width: 390px) {
  nav { gap: 10px; }
  nav a { font-size: 11px; }
  .action-row { align-items: flex-start; flex-direction: column; gap: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}