:root {
  --navy: #071f44;
  --blue: #3f7fbe;
  --text: #10233f;
  --muted: #5f6f84;
  --white: #ffffff;
  --line: #e2eaf3;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: Arial, Helvetica, sans-serif; color: var(--text); background: var(--white); line-height: 1.55; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, 92%); margin: 0 auto; }

header { background: #fff; border-bottom: 1px solid #eef2f6; position: sticky; top: 0; z-index: 100; }
.nav { min-height: 112px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand img { width: 250px; height: auto; }
nav ul { display: flex; gap: 38px; align-items: center; list-style: none; color: var(--navy); font-size: 15px; font-weight: 700; }
nav a:hover { color: var(--blue); }

.notice { background:#fff7e8; border-bottom:1px solid #f0dfb5; padding:14px 0; text-align:center; font-size:15px; color:#7a5a12; font-weight:600; }

.hero { background: linear-gradient(135deg, #f8fbff, #dbeaf7); overflow: hidden; }
.hero-grid { min-height: 560px; display: grid; grid-template-columns: 1fr 0.9fr; gap: 54px; align-items: center; }
.hero-content { padding: 84px 0; }
h1 { font-size: clamp(38px, 5.4vw, 58px); line-height: 1.18; letter-spacing: -1.4px; color: var(--navy); margin-bottom: 28px; }
.hero p { color: #2f3f55; font-size: 20px; margin-bottom: 30px; max-width: 520px; }
.hero-image { border-radius: 28px; overflow: hidden; box-shadow: 0 30px 80px rgba(7,31,68,.18); max-height: 430px; }
.hero-image img { width: 100%; height: 430px; object-fit: cover; object-position: center 28%; }
.btn { display: inline-flex; align-items: center; gap: 16px; padding: 16px 24px; border-radius: 4px; background: var(--navy); color: #fff; font-weight: 800; box-shadow: 0 10px 24px rgba(7,31,68,0.16); }
.btn span { font-size: 24px; line-height: 1; }

section { padding: 78px 0; }
.center { text-align: center; }
.section-kicker { display: block; width: 56px; height: 4px; background: var(--blue); margin: 0 auto 18px; }
.section-kicker.left { margin-left: 0; }
h2 { font-size: clamp(30px, 4vw, 38px); color: var(--navy); line-height: 1.2; margin-bottom: 18px; }
.lead { max-width: 760px; margin: 0 auto; color: var(--muted); font-size: 18px; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 54px; }
.feature { text-align: center; padding: 0 44px; min-height: 210px; }
.feature + .feature { border-left: 1px solid var(--line); }
.icon { width: 112px; height: 112px; border-radius: 50%; background: #edf4fb; display: grid; place-items: center; margin: 0 auto 26px; color: var(--navy); }
.icon svg { width: 48px; height: 48px; stroke-width: 1.8; }
.feature h3 { color: var(--navy); font-size: 21px; margin-bottom: 12px; }
.feature p { color: var(--muted); font-size: 16px; }

.research { padding: 0; display: grid; grid-template-columns: 1fr 1fr; background: #f8fbff; min-height: 430px; }
.research-text { padding: 78px max(6vw, 48px); display: flex; flex-direction: column; justify-content: center; }
.research-text p { color: #3e4e62; font-size: 18px; max-width: 540px; margin-bottom: 28px; }
.research-photo { min-height: 430px; overflow: hidden; }
.research-photo img { width: 100%; height: 100%; min-height: 430px; object-fit: cover; object-position: center 58%; }

.contact { background: linear-gradient(135deg, #071f44, #0c3a6b); color: #fff; padding: 64px 0; }
.contact-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 42px; align-items: center; }
.contact h2 { color: #fff; margin-bottom: 14px; }
.contact p { color: #d9e8f7; }
.contact-card { display: grid; grid-template-columns: 70px 1fr; gap: 18px; align-items: center; padding-left: 36px; border-left: 1px solid rgba(255,255,255,0.25); }
.contact-icon { width: 62px; height: 62px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.85); display: grid; place-items: center; }
.contact-icon svg { width: 28px; height: 28px; }
.contact-card strong { display: block; font-size: 18px; margin-bottom: 4px; }
.contact-card a { color: #fff; font-size: 18px; font-weight: 700; }

footer { background: #08284d; color: #fff; padding: 24px 0; font-size: 14px; }

@media (max-width: 900px) {
  .nav { min-height: auto; padding: 18px 0; align-items: flex-start; }
  .brand img { width: 210px; }
  nav ul { display: none; }
  .hero-grid, .features, .research, .contact-grid { grid-template-columns: 1fr; }
  .hero-content { padding: 58px 0 18px; }
  .hero-image img { height: 320px; }
  .feature { padding: 28px 0; }
  .feature + .feature { border-left: 0; border-top: 1px solid var(--line); }
  .contact-card { border-left: 0; padding-left: 0; }
}