:root {
  --blue: #006dff;
  --blue-dark: #0053c7;
  --ink: #101828;
  --muted: #667085;
  --line: #e7ebf1;
  --surface: #f7f9fc;
  --white: #ffffff;
  --radius: 24px;
  --shadow: 0 24px 70px rgba(16, 24, 40, 0.10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.84);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(231,235,241,.8);
}
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { font-size: 1.25rem; font-weight: 800; letter-spacing: -.03em; }
.brand span { color: var(--blue); }
nav { display: flex; gap: 28px; color: #344054; font-size: .95rem; }
nav a:hover, footer a:hover { color: var(--blue); }

.hero { padding: 92px 0 78px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 68px; }
.eyebrow { margin: 0 0 14px; color: var(--blue); font-size: .78rem; font-weight: 800; letter-spacing: .16em; }
h1, h2, h3 { margin-top: 0; line-height: 1.22; letter-spacing: -.04em; }
h1 { margin-bottom: 24px; font-size: clamp(2.6rem, 6vw, 5.3rem); }
h2 { margin-bottom: 18px; font-size: clamp(2rem, 4vw, 3.35rem); }
h3 { margin-bottom: 14px; font-size: 1.45rem; }
.lead { max-width: 690px; margin: 0; color: var(--muted); font-size: 1.12rem; }
.actions { display: flex; align-items: center; gap: 24px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  color: white;
  background: var(--blue);
  font-weight: 750;
  box-shadow: 0 12px 28px rgba(0,109,255,.24);
  transition: transform .2s ease, background .2s ease;
}
.button:hover { background: var(--blue-dark); transform: translateY(-2px); }
.button.secondary { background: var(--ink); box-shadow: none; }
.text-link { color: var(--blue); font-weight: 700; }

.hero-card {
  position: relative;
  min-height: 500px;
  border-radius: 36px;
  background: linear-gradient(145deg, #eef5ff, #f9fbff);
  overflow: hidden;
}
.orb { position: absolute; border-radius: 50%; filter: blur(1px); }
.orb-one { width: 260px; height: 260px; top: -70px; right: -40px; background: rgba(0,109,255,.2); }
.orb-two { width: 180px; height: 180px; left: -45px; bottom: -35px; background: rgba(75,182,255,.22); }
.mock-window {
  position: absolute;
  inset: 72px 42px 54px;
  border-radius: 28px;
  background: rgba(255,255,255,.93);
  box-shadow: var(--shadow);
  transform: rotate(-2deg);
}
.mock-top { display: flex; gap: 7px; padding: 18px; border-bottom: 1px solid var(--line); }
.mock-top span { width: 9px; height: 9px; border-radius: 50%; background: #d0d5dd; }
.mock-content { padding: 34px; }
.mock-line, .mock-title { height: 13px; border-radius: 999px; background: #e8edf5; margin-bottom: 16px; }
.mock-line.short { width: 28%; background: #b9d5ff; }
.mock-line.medium { width: 72%; }
.mock-title { width: 82%; height: 30px; background: #101828; margin: 22px 0 24px; }
.mock-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 38px; }
.mock-cards i { display: block; height: 110px; border-radius: 18px; background: #f0f5ff; border: 1px solid #e0ebff; }

.section { padding: 100px 0; }
.section.alt { background: var(--surface); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 40px; }
.section-heading h2 { margin-bottom: 0; }
.section-heading p { max-width: 480px; margin: 0; color: var(--muted); }
.cards { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 20px; }
.card { padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.card.featured { background: linear-gradient(155deg, #0d1b33, #142d55); color: var(--white); }
.card p { margin-bottom: 0; color: var(--muted); }
.card.featured p { color: #c9d8ee; }
.card ul { margin: 24px 0 0; padding-left: 20px; color: #edf4ff; }
.tag { display: inline-block; margin-bottom: 26px; padding: 6px 10px; border-radius: 999px; color: #cfe2ff; background: rgba(255,255,255,.1); font-size: .72rem; font-weight: 800; letter-spacing: .12em; }
.tag.muted { color: var(--blue); background: #edf5ff; }

.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: start; }
.about-copy { color: var(--muted); font-size: 1.08rem; }
.about-copy p:first-child { margin-top: 6px; }
.contact-section { padding-top: 84px; }
.contact-block { display: flex; justify-content: space-between; align-items: center; gap: 40px; padding: 48px; border-radius: 30px; background: #eef5ff; }
.contact-block h2 { margin-bottom: 10px; }
.contact-block p { max-width: 660px; margin-bottom: 0; color: var(--muted); }

.page-hero { padding: 90px 0 48px; }
.page-hero p { max-width: 700px; color: var(--muted); }
.prose { max-width: 820px; padding-bottom: 100px; }
.prose section { margin-top: 42px; }
.prose h2 { font-size: 1.55rem; margin-bottom: 12px; letter-spacing: -.02em; }
.prose p, .prose li { color: #475467; }
.prose ul { padding-left: 22px; }
.notice { padding: 24px; border-radius: 18px; background: var(--surface); border: 1px solid var(--line); }
.email { color: var(--blue); font-weight: 750; }

footer { border-top: 1px solid var(--line); }
.footer-inner { min-height: 110px; display: flex; justify-content: space-between; align-items: center; gap: 24px; color: var(--muted); font-size: .9rem; }
.footer-inner div { display: flex; gap: 24px; }

@media (max-width: 900px) {
  nav { display: none; }
  .hero { padding-top: 62px; }
  .hero-grid, .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-card { min-height: 420px; }
  .cards { grid-template-columns: 1fr; }
  .section-heading, .contact-block { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 600px) {
  .container { width: min(100% - 28px, 1120px); }
  .nav { min-height: 64px; }
  .hero { padding: 48px 0 54px; }
  h1 { font-size: 2.65rem; }
  .hero-card { min-height: 330px; border-radius: 26px; }
  .mock-window { inset: 44px 18px 34px; }
  .mock-content { padding: 24px; }
  .mock-cards i { height: 80px; }
  .section { padding: 72px 0; }
  .card { padding: 26px; }
  .contact-block { padding: 30px; }
  .footer-inner { padding: 28px 0; align-items: flex-start; flex-direction: column; }
  .footer-inner div { flex-wrap: wrap; gap: 14px 20px; }
}