:root{
  --brand:#1c89d4;
  --brand-2:#33a1e6;
  --ink:#0d2230;
  --muted:#5f7a92;
  --bg:#f6fbff;
  --card:#ffffff;
  --accent:#59c3ff;
  --border:rgba(13,34,48,.08);
  --shadow:0 10px 30px rgba(28,137,212,.12);
  --radius:18px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:"Noto Sans JP", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;color:var(--ink);background:var(--bg);}
a{color:var(--brand);text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1120px, 92%);margin-inline:auto}

/* Header */
header{
  position:fixed;inset:0 0 auto 0;z-index:50;background:rgba(255,255,255,.8);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:16px;font-weight:800;letter-spacing:.02em}
.brand img{height:65px;width:auto}
.brand span{font-size:22px}
.menu{display:flex;gap:20px;align-items:center}
.menu a{font-weight:600;color:#173243}
.menu a.cta{padding:10px 14px;border-radius:999px;background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(28,137,212,.25)}
.hamburger{display:none;background:none;border:0;padding:6px}
.hamburger span{display:block;width:26px;height:2px;background:#173243;margin:6px 0;border-radius:1px}
@media (max-width: 880px){
  .menu{position:fixed;inset:auto 0 0 0;background:#fff;padding:18px 24px;display:none;flex-direction:column;gap:12px;border-top:1px solid var(--border)}
  .menu.show{display:flex}
  .hamburger{display:block}
}

/* Hero */
.hero{position:relative;display:grid;place-items:center;min-height:78vh;padding-top:84px;overflow:hidden;background:#1c89d4}
.hero::before{
  content:"";position:absolute;inset:0;background:url('../img/hero-water.jpg') center/cover no-repeat;opacity:.5;filter:brightness(1.1) saturate(1.1)}
.hero::after{
  content:"";position:absolute;inset:0;background:radial-gradient(1200px 600px at 60% 20%, rgba(28,137,212,.25), transparent 60%), linear-gradient(rgba(255,255,255,.15), rgba(28,137,212,.45));}
.hero-inner{position:relative;text-align:center;color:#fff;padding:32px}
.kicker{display:inline-block;margin-bottom:10px;padding:6px 12px;border:1px solid rgba(255,255,255,.7);border-radius:999px;font-weight:700;letter-spacing:.08em}
h1{font-size:clamp(28px, 4.8vw, 56px);line-height:1.15;margin:6px 0 14px}
.hero-lead{font-size:clamp(14px, 2.4vw, 18px);opacity:.95}
.cta-row{margin-top:22px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border-radius:999px;font-weight:700;border:1px solid transparent}
.btn.primary{background:#fff;color:#1c89d4}
.btn.ghost{border-color:rgba(255,255,255,.8);color:#fff}

/* Wave */
.wave{display:block;line-height:0}

/* Sections */
section{padding:64px 0}
.sec-title{text-align:center;margin-bottom:28px}
.sec-title h2{font-size:clamp(22px,3.2vw,32px);margin:0}
.sec-title p{color:var(--muted);margin:8px 0 0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width: 960px){.grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width: 640px){.grid{grid-template-columns:1fr}}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:transform .28s ease, box-shadow .28s ease}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(13,100,166,.18)}
.card h3{margin:6px 0 10px;font-size:18px}
.card p{margin:0;color:#35515f}
.badge{display:inline-block;font-size:12px;font-weight:700;color:#0c3d56;background:linear-gradient(90deg, #e9f6ff, #f7fcff);border:1px solid #caeafe;border-radius:999px;padding:6px 10px;margin-bottom:8px}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-weight:700}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(6, 1fr);gap:10px}
.gallery .ph{aspect-ratio:4/3;border-radius:12px;background:linear-gradient(120deg,#dff2ff,#f3fbff);border:1px dashed #bfe3fb}
@media (max-width: 960px){.gallery{grid-template-columns:repeat(4,1fr)}}
@media (max-width: 640px){.gallery{grid-template-columns:repeat(2,1fr)}}

/* Testimonials */
.testi{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.quote{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.quote p{margin:0;color:#35515f}
@media (max-width: 960px){.testi{grid-template-columns:1fr 1fr}}
@media (max-width: 640px){.testi{grid-template-columns:1fr}}

/* Tabs & Forms */
.tabs{background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);padding:18px}
.tab-head{display:flex;gap:10px;margin-bottom:12px}
.tab-btn{flex:1;padding:12px;border:1px solid var(--border);background:#f5fbff;border-radius:12px;cursor:pointer;font-weight:800}
.tab-btn.active{background:var(--brand);color:#fff;border-color:transparent}
.tab-panel{display:none}
.tab-panel.active{display:block}

form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
form .full{grid-column:1/-1}
label{display:block;font-size:14px;font-weight:700;margin-bottom:6px}
input, textarea, select{width:100%;padding:12px;border:1px solid #cfe4f3;border-radius:12px;background:#f9fdff}
textarea{min-height:120px}
.form-submit{display:flex;justify-content:flex-end;margin-top:10px}
.form-submit button{background:var(--brand);color:#fff;border:0;border-radius:999px;padding:12px 18px;font-weight:800}

/* Footer */
footer{background:#052336;color:#e7f6ff;margin-top:28px}
.foot{display:grid;grid-template-columns:2fr 1fr 1fr;gap:18px;padding:36px 0}
.foot h4{margin:0 0 10px;font-size:14px;color:#bfe3fb}
.foot p,.foot a{color:#e7f6ff}
.copy{border-top:1px solid rgba(255,255,255,.1);padding:12px 0;color:#a9d3ea;font-size:13px;text-align:center}
@media (max-width: 820px){.foot{grid-template-columns:1fr;gap:6px}}

/* Reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
.reveal.show{opacity:1;transform:none}

/* Utilities */
.breadcrumb{font-size:14px;color:#3b6073;margin:8px 0 16px}
.breadcrumb a{color:#0d5ea8}
.page-header{padding-top:96px;background:linear-gradient(0deg, rgba(28,137,212,.06), transparent 60%)}
.page-header h1{margin:12px 0 8px}
.page-lead{color:#3b6073}

.menu a.recruit-cta {
  font-size: 18px;
  font-weight: 800;
  background: #e85c41;   /* 赤系など */
  color: #fff;
  padding: 12px 18px;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(28,137,212,.25);
}