:root {
  --ink: #15283a;
  --muted: #607080;
  --paper: #f6f9fc;
  --white: #ffffff;
  --primary: #2563a6;
  --primary-dark: #174a7a;
  --accent: #4f8fcb;
  --line: #d9e4ef;
  --shadow: 0 14px 35px rgba(32, 86, 140, .12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif; color: var(--ink); background: var(--paper); line-height: 1.8; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(10px); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; flex-direction: column; color: var(--ink); line-height: 1.25; }
.brand strong { font-size: 1.16rem; letter-spacing: .05em; }
.brand span { color: var(--muted); font-size: .73rem; letter-spacing: .08em; }
.nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: .88rem; font-weight: 700; letter-spacing: .06em; }
.nav a { color: var(--ink); padding: 8px 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a.active { color: var(--primary); border-bottom-color: var(--accent); text-decoration: none; }
.hero { position: relative; overflow: hidden; background: linear-gradient(135deg, #eaf3fb 0%, #f6f9fc 55%, #eef6fd 100%); border-bottom: 1px solid var(--line); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(2px); opacity: .55; }
.hero::before { width: 420px; height: 420px; right: -140px; top: -210px; background: radial-gradient(circle, rgba(37,99,166,.22), rgba(37,99,166,0)); }
.hero::after { width: 320px; height: 320px; left: -120px; bottom: -210px; background: radial-gradient(circle, rgba(79,143,203,.18), rgba(79,143,203,0)); }
.hero-inner { position: relative; padding: 94px 0 84px; display: grid; grid-template-columns: 1.3fr .7fr; align-items: center; gap: 56px; }
.eyebrow { color: var(--primary); font-weight: 800; letter-spacing: .15em; font-size: .82rem; }
h1 { margin: 12px 0 18px; font-size: clamp(2.1rem, 5vw, 4.3rem); line-height: 1.2; letter-spacing: .04em; }
.hero-lead { max-width: 760px; font-size: 1.08rem; color: #32485d; }
.hero-card { background: rgba(255,255,255,.82); border: 1px solid rgba(255,255,255,.8); box-shadow: var(--shadow); border-radius: 26px; padding: 32px; }
.hero-card .circle { width: 110px; height: 110px; margin: 0 auto 20px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(from 45deg, var(--primary), #6fa8dc, #aac8e8, var(--primary)); color: white; font-weight: 900; font-size: 1.9rem; box-shadow: inset 0 0 0 10px rgba(255,255,255,.25); }
.hero-card p { margin: 0; text-align: center; font-weight: 700; }
.button-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 999px; font-weight: 700; border: 1px solid var(--primary); }
.btn.primary { background: var(--primary); color: white; }
.btn.secondary { background: white; color: var(--primary); }
section { padding: 72px 0; }
.section-head { margin-bottom: 32px; }
.section-head h2, .page-title h1 { margin: 5px 0 8px; font-size: clamp(1.8rem, 3vw, 2.7rem); }
.section-head p, .page-title p { color: var(--muted); margin: 0; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card { background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 26px; box-shadow: 0 8px 24px rgba(32,86,140,.07); }
.card h3 { margin: 8px 0 10px; line-height: 1.45; }
.card p { margin: 0; color: #4d6072; }
.card .num { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; background: #e7f0fa; color: var(--primary-dark); font-weight: 900; }
.band { background: var(--primary-dark); color: white; }
.band p { color: rgba(255,255,255,.82); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; }
.list-clean { list-style: none; padding: 0; margin: 0; }
.list-clean li { padding: 14px 0; border-bottom: 1px solid var(--line); }
.page-title { padding: 68px 0 48px; background: linear-gradient(120deg, #eaf3fb, #f2f7fc); border-bottom: 1px solid var(--line); }
.project { margin-bottom: 28px; background: white; border-radius: 18px; border: 1px solid var(--line); padding: 30px; }
.project h2 { margin-top: 0; font-size: 1.35rem; }
.project .tag { display: inline-block; margin-right: 7px; margin-bottom: 6px; padding: 4px 10px; background: #eaf2fb; color: var(--primary-dark); border-radius: 999px; font-size: .78rem; font-weight: 700; }
.note { padding: 20px 22px; border-left: 4px solid var(--accent); background: #f2f7fc; border-radius: 0 12px 12px 0; }
.profile { display: grid; grid-template-columns: 220px 1fr; gap: 38px; align-items: start; }
.profile-mark { aspect-ratio: 1; border-radius: 24px; background: linear-gradient(145deg, var(--primary), #78a9d8); display: grid; place-items: center; color: white; font-size: 4rem; font-weight: 900; box-shadow: var(--shadow); }
footer { padding: 34px 0; background: #102f4d; color: rgba(255,255,255,.76); font-size: .83rem; }
footer strong { color: white; }
@media (max-width: 840px) {
  .header-inner { padding: 14px 0; align-items: flex-start; flex-direction: column; gap: 10px; }
  .site-header { position: static; }
  .nav { gap: 13px; }
  .hero-inner, .two-col, .profile { grid-template-columns: 1fr; }
  .hero-inner { padding: 62px 0; }
  .hero-card { max-width: 360px; }
  .grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .container { width: min(100% - 28px, 1120px); }
  .grid { grid-template-columns: 1fr; }
  section { padding: 54px 0; }
  .nav { font-size: .78rem; }
}

/* Equipment page */
.equipment-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.equipment-card { overflow: hidden; background: var(--white); border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 10px 28px rgba(32,86,140,.09); }
.equipment-image { height: 300px; background: #edf4fb; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.equipment-image.landscape { height: 230px; }
.equipment-image img { width: 100%; height: 100%; object-fit: cover; }
.equipment-body { padding: 24px; }
.equipment-type { display: inline-block; color: var(--primary); font-size: .72rem; font-weight: 900; letter-spacing: .12em; }
.equipment-card h2 { margin: 8px 0 12px; font-size: 1.2rem; line-height: 1.5; }
.equipment-card h2 small { color: var(--muted); font-size: .78em; font-weight: 600; }
.equipment-card p { margin: 0; color: #4d6072; }
.equipment-list-section { background: #edf4fb; }
.equipment-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 22px; }
.equipment-list div { padding: 18px 20px; background: white; border: 1px solid var(--line); border-radius: 14px; }
.equipment-list strong, .equipment-list span { display: block; }
.equipment-list span { margin-top: 5px; color: var(--muted); font-size: .92rem; }
.source-note { margin-top: 24px; color: var(--muted); font-size: .78rem; }
@media (max-width: 840px) { .equipment-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .equipment-grid, .equipment-list { grid-template-columns: 1fr; } }