:root{
  --navy:#16456e; --navy2:#1d5686; --deep:#0e2c47; --line:#e2ebf2; --ink:#1d2d3c;
  --muted:#72869a; --soft:#f2f8fc; --accent:#e5a52b; --teal:#1f9a8a;
  --shadow:0 2px 14px rgba(22,69,110,.07);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Yu Gothic UI","Yu Gothic","Hiragino Kaku Gothic ProN","Noto Sans JP","Segoe UI",sans-serif;
  color:var(--ink); line-height:1.8; background:#fff; font-size:16px;
}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}

/* ---- header ---- */
header{position:sticky;top:0;z-index:50;background:rgba(22,69,110,.96);color:#fff;
  backdrop-filter:blur(6px);border-bottom:1px solid rgba(255,255,255,.1)}
.hd{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}
.brand{font-weight:700;font-size:19px;letter-spacing:.06em}
.brand small{display:block;font-size:10.5px;font-weight:400;color:#9db3c6;letter-spacing:.14em}
nav.main{display:flex;gap:22px;font-size:13.5px}
nav.main a{text-decoration:none;color:#d6e2ec}
nav.main a:hover{color:#fff}
.langs{display:flex;gap:9px;font-size:11.5px}
.langs a{text-decoration:none;color:#7f97ad;padding:2px 5px;border-radius:2px}
.langs a.on{color:#0b1f33;background:#fff;font-weight:700}

/* ---- hero ---- */
.hero{position:relative;color:#fff;min-height:580px;display:flex;align-items:center;
  background:#16456e url("img/gate.jpg") center 42% / cover no-repeat}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,44,71,.86) 0%,rgba(20,62,98,.72) 46%,rgba(28,84,130,.36) 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:72px;padding-bottom:72px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.2em;color:#ffd685;
  border:1px solid rgba(229,165,43,.75);background:rgba(229,165,43,.12);
  padding:5px 13px;border-radius:2px;margin-bottom:22px}
.hero h1{font-size:44px;line-height:1.3;font-weight:700;letter-spacing:.01em;max-width:18em}
.hero p.sub{margin-top:18px;font-size:16px;color:#dbe8f3;max-width:34em}
.nums{display:flex;flex-wrap:wrap;gap:40px;margin-top:40px}
.num .v{font-size:38px;font-weight:700;letter-spacing:-.01em;line-height:1.1}
.num .v small{font-size:16px;font-weight:600;margin-left:3px}
.num .k{font-size:12.5px;color:#c2d6e6;letter-spacing:.06em;margin-top:4px}
.classes{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.3);
  font-size:14px;color:#e4eef6}
.classes b{color:#fff;letter-spacing:.06em}
.cta{display:inline-flex;align-items:center;gap:10px;margin-top:30px;background:var(--accent);
  color:#0b1f33;font-weight:700;text-decoration:none;padding:15px 30px;border-radius:3px;font-size:15.5px}
.cta:hover{background:#dba62a}

/* ---- sections ---- */
section{padding:84px 0}
section.alt{background:linear-gradient(180deg,#f7fbfe 0%,var(--soft) 100%)}
.sec-h{font-size:12px;letter-spacing:.2em;color:var(--teal);font-weight:700;margin-bottom:12px}
h2{font-size:31px;line-height:1.4;font-weight:700;letter-spacing:.01em}
h2+p.lead{margin-top:16px;color:#54687c;max-width:44em}
h3{font-size:19px;font-weight:700;margin-bottom:9px}

.pillars{display:grid;grid-template-columns:1.25fr 1fr;gap:26px;margin-top:40px}
.pillar{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;
  box-shadow:var(--shadow);display:flex;flex-direction:column}
.pillar .ph{aspect-ratio:16/9;background:#dde4ea;overflow:hidden}
.pillar .ph img{width:100%;height:100%;object-fit:cover}
.pillar .bd{padding:26px 26px 30px}
.tag{display:inline-block;font-size:11px;letter-spacing:.14em;font-weight:700;
  padding:3px 9px;border-radius:2px;margin-bottom:12px}
.tag.m{background:var(--navy);color:#fff}
.tag.s{background:#e7ecf1;color:#46586a}
.pillar p{color:#54687c;font-size:14.5px}
.more{display:inline-block;margin-top:16px;font-size:13.5px;font-weight:700;
  color:var(--navy2);text-decoration:none;border-bottom:2px solid var(--accent);padding-bottom:2px}

.lic{width:100%;border-collapse:collapse;margin-top:34px;font-size:14.5px}
.lic th,.lic td{border-bottom:1px solid var(--line);padding:13px 14px;text-align:left}
.lic th{background:var(--navy);color:#fff;font-weight:600;font-size:13px;letter-spacing:.05em;border-radius:6px 6px 0 0}
.lic td:first-child{font-weight:700;width:13%;color:var(--navy2)}
.lic tr:nth-child(even) td{background:#f7fbfe}

.hp{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:10px;overflow:hidden;
  margin-top:40px;background:linear-gradient(135deg,#1d5686 0%,#16456e 70%);color:#fff;
  box-shadow:0 6px 26px rgba(22,69,110,.16)}
.hp .txt{padding:52px 46px}
.hp .ph{background:#1d5686;min-height:300px}
.hp .ph img{width:100%;height:100%;object-fit:cover;opacity:.95}
.when{font-size:13px;letter-spacing:.2em;color:var(--accent);font-weight:700}
.hp h2{margin:10px 0 16px;font-size:29px}
.hp p{color:#d5e5f2;font-size:14.5px}
.hp ul{margin:20px 0 0 18px;color:#d5e5f2;font-size:14.5px}

.prods{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.prod{border:1px solid var(--line);border-radius:6px;padding:16px;font-size:13.5px;
  background:#fff;color:#54687c;box-shadow:var(--shadow)}
.prod b{display:block;color:var(--ink);font-size:14.5px;margin-bottom:3px}

.hist{margin-top:34px;border-left:2px solid var(--line);padding-left:26px}
.hist li{list-style:none;margin-bottom:18px;position:relative}
.hist li::before{content:"";position:absolute;left:-33px;top:9px;width:9px;height:9px;
  border-radius:50%;background:var(--accent)}
.hist .y{font-weight:700;color:var(--navy2);font-size:14px;letter-spacing:.05em}
.hist .t{font-size:14.5px;color:#46586a}

.cols2{display:grid;grid-template-columns:1fr 1fr;gap:34px;margin-top:38px}
.card{border:1px solid var(--line);border-radius:8px;padding:28px;background:#fff;box-shadow:var(--shadow)}
.card.dark{background:linear-gradient(135deg,#1d5686,#16456e);color:#fff;border-color:transparent}
.card.dark h3{color:#fff}
.card.dark p{color:#d5e5f2}
.who{border-top:1px solid var(--line);padding:14px 0;font-size:14.5px}
.who:last-child{border-bottom:1px solid var(--line)}
.who b{display:block}
.who span{color:var(--muted);font-size:13px}
.who a{color:var(--navy2);text-decoration:none;font-weight:700}

form.cf{margin-top:8px}
.f{margin-bottom:14px}
.f label{display:block;font-size:13px;font-weight:700;margin-bottom:5px;color:#2e4052}
.f input,.f textarea,.f select{width:100%;border:1px solid #cdd7e0;border-radius:3px;
  padding:11px 12px;font:inherit;font-size:14.5px;background:#fff}
.f textarea{min-height:120px;resize:vertical}
button.send{background:var(--navy);color:#fff;border:0;border-radius:3px;padding:15px 34px;
  font:inherit;font-weight:700;font-size:15px;cursor:pointer}
button.send:hover{background:var(--navy2)}
.hp-note{font-size:12.5px;color:var(--muted);margin-top:10px}
.hidden{position:absolute;left:-9999px}

footer{background:var(--deep);color:#b8cddf;padding:52px 0 30px;font-size:13.5px}
footer h4{color:#fff;font-size:15px;margin-bottom:12px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}
footer a{color:#d5e5f2;text-decoration:none}
.copy{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.13);font-size:12px}

@media(max-width:900px){
  nav.main{display:none}
  .hero h1{font-size:30px}
  .hero{min-height:auto}
  .pillars,.hp,.cols2{grid-template-columns:1fr}
  .prods{grid-template-columns:1fr 1fr}
  .nums{gap:26px}
  .hp .ph{min-height:220px}
}

/* ================= 下層ページ ================= */
.phero{background:linear-gradient(120deg,#1d5686 0%,#16456e 60%,#0e2c47 100%);color:#fff;
  padding:64px 0 58px}
.phero .crumb{font-size:12.5px;color:#a8c6de;margin-bottom:14px}
.phero .crumb a{color:#a8c6de;text-decoration:none}
.phero .crumb a:hover{color:#fff}
.phero h1{font-size:34px;line-height:1.4;font-weight:700}
.phero p{margin-top:14px;color:#d5e5f2;font-size:15.5px;max-width:44em}
.body h3{margin-top:34px}
.body h3:first-child{margin-top:0}
.body p{color:#54687c;margin-top:12px}
.body ul{margin:14px 0 0 20px;color:#54687c}
.body li{margin-bottom:7px}
.figure{margin-top:30px;border-radius:8px;overflow:hidden;box-shadow:var(--shadow)}
.figure img{width:100%}
.figure .cap{background:#fff;border:1px solid var(--line);border-top:0;
  padding:12px 16px;font-size:13px;color:var(--muted)}
.cta-band{background:linear-gradient(135deg,#1d5686,#16456e);color:#fff;border-radius:10px;
  padding:42px 46px;margin-top:56px;box-shadow:0 6px 26px rgba(22,69,110,.16)}
.cta-band h3{font-size:22px;margin-bottom:10px}
.cta-band p{color:#d5e5f2;font-size:14.5px}
.spec{width:100%;border-collapse:collapse;margin-top:26px;font-size:14.5px}
.spec th,.spec td{border-bottom:1px solid var(--line);padding:13px 14px;text-align:left;vertical-align:top}
.spec th{width:26%;background:#f7fbfe;color:var(--navy2);font-weight:700;font-size:14px}
.news li{list-style:none;border-bottom:1px solid var(--line);padding:20px 0}
.news .d{font-size:12.5px;color:var(--muted);letter-spacing:.06em}
.news .t{font-size:16.5px;font-weight:700;margin-top:5px;color:var(--ink)}
.news .x{font-size:14px;color:#54687c;margin-top:7px}
@media(max-width:900px){
  .phero h1{font-size:25px}
  .cta-band{padding:30px 24px}
  .spec th{width:36%}
}

nav.main a.cur{color:#fff;border-bottom:2px solid var(--accent);padding-bottom:3px}