:root {
  --navy: #0b2a4a;
  --sea: #1f6f9a;
  --ink: #1d2733;
  --muted: #5b6876;
  --line: #dfe5ea;
  --bg: #ffffff;
  --bg-alt: #f4f7f9;
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.8; -webkit-font-smoothing: antialiased; }
a { color: var(--sea); }
.wrap { max-width: 1040px; margin: 0 auto; padding-inline: 24px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--navy); text-decoration: none; }
.brand-mark { width: 30px; height: 30px; }
.brand-text { font-weight: 700; letter-spacing: .14em; font-size: 15px; }
.nav { display: flex; gap: 24px; }
.nav a { color: var(--ink); text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--sea); }

/* hero */
.hero { background: linear-gradient(160deg, var(--navy) 0%, #12406a 55%, var(--sea) 100%); color: #fff; padding-block: 120px 128px; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: auto -10% -60px -10%; height: 160px; background: radial-gradient(ellipse at center, rgba(255,255,255,.10), transparent 70%); }
.eyebrow { letter-spacing: .2em; font-size: 13px; opacity: .8; margin: 0 0 12px; }
.hero h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.3; margin: 0 0 24px; font-weight: 700; letter-spacing: .04em; }
.lead { max-width: 640px; margin: 0; opacity: .92; }

/* sections */
.section { padding-block: 96px; }
.section-alt { background: var(--bg-alt); }
.section-title { font-size: 26px; margin: 0 0 40px; color: var(--navy); }
.section-title span { display: block; font-size: 13px; letter-spacing: .2em; color: var(--sea); text-transform: uppercase; margin-bottom: 4px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.card { border: 1px solid var(--line); border-radius: 10px; padding: 28px; background: #fff; }
.card-no { margin: 0; color: var(--sea); font-weight: 700; letter-spacing: .1em; }
.card h3 { word-break: keep-all; overflow-wrap: anywhere; margin: 4px 0 12px; font-size: 19px; color: var(--navy); }
.card p:last-child { margin: 0; color: var(--muted); font-size: 15px; }

.profile { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 10px; }
.profile > div { display: grid; grid-template-columns: 180px 1fr; border-bottom: 1px solid var(--line); }
.profile > div:last-child { border-bottom: 0; }
.profile dt { padding: 18px 24px; font-weight: 700; color: var(--navy); background: #fafcfd; }
.profile dd { margin: 0; padding: 18px 24px; }
.sub { color: var(--muted); font-size: 14px; }

.contact { max-width: 720px; }
.form { margin-top: 32px; display: grid; gap: 20px; }
.field label { display: block; font-weight: 700; font-size: 14px; margin-bottom: 6px; color: var(--navy); }
.req, .opt { font-size: 11px; font-weight: 700; margin-left: 8px; padding: 1px 6px; border-radius: 3px; vertical-align: 1px; }
.req { background: var(--sea); color: #fff; }
.opt { background: var(--line); color: var(--muted); }
.field input, .field textarea { width: 100%; font: inherit; font-size: 16px; padding: 10px 12px; border: 1px solid #c8d1d9; border-radius: 6px; background: #fff; color: var(--ink); }
.field input:focus, .field textarea:focus { outline: 2px solid var(--sea); outline-offset: 1px; border-color: var(--sea); }
.field textarea { resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.agree { display: flex; gap: 8px; align-items: center; font-size: 14px; }
.agree input { width: 18px; height: 18px; }
.btn { justify-self: start; font: inherit; font-weight: 700; letter-spacing: .08em; padding: 12px 40px; border: 0; border-radius: 6px; background: var(--navy); color: #fff; cursor: pointer; }
.btn:hover { background: var(--sea); }
a.btn { display: inline-block; text-decoration: none; }
.cta { margin-top: 28px; }
.nav a[aria-current="page"] { color: var(--sea); font-weight: 700; }
.btn:disabled { opacity: .5; cursor: wait; }
.form-status { margin: 0; min-height: 1.8em; font-weight: 700; }
.form-status.ok { color: #1d7a4a; }
.form-status.err { color: #b3261e; }
.doc h2 { font-size: 18px; color: var(--navy); margin: 36px 0 8px; }
.doc p, .doc li { font-size: 15px; }
.footer-links a { color: #cfd9e3; }
.note { color: var(--muted); font-size: 13px; }
.disclaimer { margin: 24px 0 0; }
.sp { display: none; }

.site-footer { background: var(--navy); color: #cfd9e3; padding-block: 32px; font-size: 13px; }
.site-footer p { margin: 0; }
.copy { opacity: .7; margin-top: 4px !important; }

@media (max-width: 640px) {
  .nav { gap: 14px; }
  .nav a { font-size: 12px; }
  .brand-text { font-size: 13px; }
  .hero { padding-block: 80px 88px; }
  .section { padding-block: 64px; }
  .pc { display: none; }
  .sp { display: inline; }
  .profile > div { grid-template-columns: 1fr; }
  .profile dt { padding: 12px 18px 4px; background: none; }
  .profile dd { padding: 0 18px 14px; }
}