:root {
  --bg: #fbfaf7; --bg-2: #f1efe9; --ink: #101418; --muted: #5b6168; --accent: #0f3b5a; --accent-ink: #ffffff; --line: #e3e0d8;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Inter Tight", "Inter", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 28px; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; letter-spacing: -0.02em; margin: 0; }
p { margin: 0; }

/* nav */
.nav { display: flex; align-items: center; justify-content: space-between; padding: 26px 0; }
.wordmark { display: flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 600; font-size: 18px; text-decoration: none; letter-spacing: -0.01em; }
.wordmark svg { width: 22px; height: 22px; }
.nav-links { display: flex; gap: 28px; font-size: 15px; }
.nav-links a { text-decoration: none; color: var(--muted); }
.nav-links a:hover { color: var(--ink); }
.btn { display: inline-flex; align-items: center; min-height: 44px; padding: 0 20px; background: var(--accent); color: var(--accent-ink); text-decoration: none; font-weight: 500; font-size: 15px; border-radius: 4px; }
.btn:hover { background: #0b2e47; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.ghost:hover { background: var(--bg-2); }

/* hero */
.hero { padding: 96px 0 104px; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(40px, 5.2vw, 68px); line-height: 1.04; max-width: 14ch; }
.hero p { font-size: 20px; color: var(--muted); max-width: 44ch; margin: 24px 0 36px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.motif { width: 100%; aspect-ratio: 1; color: var(--accent); }

/* sections */
.section { padding: 96px 0; }
.section.alt { background: var(--bg-2); }
.section-head { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 48px; align-items: start; }
.section h2 { font-size: clamp(28px, 3vw, 40px); line-height: 1.15; }
.section-head p { font-size: 19px; max-width: 58ch; }
.three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; margin-top: 64px; }
.three h3 { font-size: 20px; margin-bottom: 10px; }
.three p { color: var(--muted); font-size: 16px; }
.three > div { padding-top: 20px; border-top: 2px solid var(--ink); }
.principles { list-style: none; margin: 56px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 48px; }
.principles li { padding: 22px 0; border-top: 1px solid var(--line); font-family: var(--display); font-size: 24px; font-weight: 500; letter-spacing: -0.01em; }
.notice { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 48px; align-items: center; }
.notice p { font-size: 19px; max-width: 48ch; margin-top: 16px; color: var(--muted); }

/* contact */
.contact { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 48px; }
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 48px; }
.contact-grid h3 { font-size: 14px; font-weight: 500; color: var(--muted); margin-bottom: 8px; }
.contact-grid a { text-decoration: none; }
.contact-grid a:hover { text-decoration: underline; }
address { font-style: normal; line-height: 1.6; font-size: 18px; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 32px 0 48px; font-size: 14px; color: var(--muted); display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 56px 0 72px; }
  .motif { max-width: 320px; }
  .section { padding: 72px 0; }
  .section-head, .notice, .contact { grid-template-columns: 1fr; gap: 20px; }
  .three { grid-template-columns: 1fr; gap: 28px; margin-top: 40px; }
  .principles { grid-template-columns: 1fr; margin-top: 32px; }
  .principles li { font-size: 20px; padding: 16px 0; }
  .contact-grid { grid-template-columns: 1fr; gap: 24px; }
  .nav-links { display: none; }
}