:root{
  --blue:#065f86;--deep:#092437;--aqua:#0787a8;--pale:#eef9ff;--line:#d9edf7;
  --text:#12303f;--muted:#526b78;--white:#fff;--green:#1e9b72;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,Arial,sans-serif;color:var(--text);background:#fff;line-height:1.75}
a{color:inherit;text-decoration:none}.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.header{background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.head{height:74px;display:flex;align-items:center;gap:22px}
.logo{display:flex;align-items:center;gap:12px;margin-right:auto}.mark{width:44px;height:44px;border-radius:13px;background:var(--aqua);color:#fff;display:grid;place-items:center;font-weight:900}.logo b{font-size:21px;color:var(--blue)}.logo small{display:block;color:var(--muted);margin-top:-5px}
.nav{display:flex;gap:18px;font-size:14px;color:#365464}.nav a:hover{color:var(--aqua)}
.qcbtn{background:var(--deep);color:#fff;border-radius:999px;padding:10px 16px;font-weight:800;white-space:nowrap}
.hero{background:linear-gradient(135deg,#e8f9ff 0%,#fff 52%,#eaf7ff 100%);padding:78px 0 70px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
.label{font-weight:900;color:var(--aqua);letter-spacing:.08em;text-transform:uppercase;margin:0 0 10px}
h1{font-size:50px;line-height:1.16;margin:0 0 20px;color:#053f5e;letter-spacing:-.03em}
h2{font-size:34px;line-height:1.28;margin:0 0 18px;color:#053f5e;letter-spacing:-.02em}
h3{font-size:21px;margin:0 0 8px;color:#064e72}.lead{font-size:18px;color:#3e5966;max-width:720px;margin:0 0 26px}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:13px 22px;font-weight:900}.primary{background:var(--aqua);color:#fff;box-shadow:0 12px 28px rgba(7,135,168,.22)}.secondary{background:#fff;border:1px solid #cfe8f5;color:#0a4b68}
.badges{display:flex;gap:9px;flex-wrap:wrap}.badges span{background:#e1f5fb;color:var(--blue);border-radius:999px;padding:7px 12px;font-size:13px;font-weight:800}
.visual{background:#fff;border:1px solid #cfe8f5;border-radius:26px;padding:28px;box-shadow:0 20px 50px rgba(8,120,168,.12);position:relative}
.tank{height:285px;border-radius:22px;background:linear-gradient(180deg,#bcecff,#65c5ed);position:relative;overflow:hidden;border:8px solid #e5f8ff}.tank:before{content:"";position:absolute;left:18%;right:18%;top:34px;height:56px;border:8px solid rgba(255,255,255,.75);border-bottom:0;border-radius:50% 50% 0 0}.tank:after{content:"PP WATER TANK";position:absolute;left:0;right:0;bottom:54px;text-align:center;color:#fff;font-size:22px;font-weight:900;letter-spacing:.08em;text-shadow:0 2px 8px rgba(0,0,0,.16)}.pipe{position:absolute;width:70%;height:18px;background:#fff;border-radius:12px;left:15%;bottom:28px}
.float{position:absolute;right:14px;bottom:14px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px 16px;box-shadow:0 12px 28px rgba(0,0,0,.1);font-size:14px}.float b{display:block;color:var(--green)}
.section{padding:76px 0}.alt{background:#f4fbff}.title{text-align:center;margin-bottom:30px}.title p:not(.label){color:var(--muted)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 10px 26px rgba(8,120,168,.06);transition:.18s}.card:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(8,120,168,.12)}.card p{color:var(--muted);margin:0}
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.list{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.list ul{margin:0;padding-left:1.2em;columns:2}.list li{margin:4px 0}
.qcblock{background:var(--deep);color:#fff}.qcblock h2{color:#fff}.qcblock p{color:#d5e8ef}.qcpanel{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:24px;padding:26px}.qcrow{display:flex;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.15);padding:12px 0}.ok{color:#73f0bd;font-weight:900}
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.step b{font-size:26px;color:var(--aqua)}
.case{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:center}.photo{height:250px;border-radius:20px;background:linear-gradient(135deg,#c8f0fb,#fff);display:grid;place-items:center;color:var(--aqua);font-weight:900;font-size:28px;border:1px solid var(--line)}
.cta{background:var(--blue);color:#fff;padding:70px 0}.cta h2{color:#fff}.cta p{color:#dff4ff}.cta .wrap{display:flex;justify-content:space-between;gap:30px;align-items:center}
.footer{background:#052133;color:#bddbe6;text-align:center;padding:28px 10px;font-size:13px}.footer a{color:#fff}
.page-hero{background:linear-gradient(135deg,#e9f8ff,#fff);padding:58px 0;border-bottom:1px solid var(--line)}.content{max-width:900px;margin:auto}.content p{color:var(--muted)}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:12px}
.contact-box{background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:0 10px 26px rgba(8,120,168,.06)}
.login{max-width:430px;margin:60px auto;background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:0 18px 42px rgba(8,120,168,.1)}.login input{width:100%;padding:13px;margin:8px 0 14px;border:1px solid #cfe8f5;border-radius:10px;font-size:16px}.login button{width:100%;border:0;cursor:pointer}
@media(max-width:900px){.nav{display:none}.hero-grid,.split,.case{grid-template-columns:1fr}.grid3{grid-template-columns:repeat(2,1fr)}.flow{grid-template-columns:repeat(2,1fr)}h1{font-size:38px}.cta .wrap{display:block}}
@media(max-width:620px){.head{height:auto;padding:13px 0}.logo small{display:none}.grid3,.grid2,.flow{grid-template-columns:1fr}.btn{width:100%;margin-bottom:8px}h1{font-size:31px}h2{font-size:27px}.section{padding:52px 0}.list ul{columns:1}.qcbtn{padding:8px 12px;font-size:13px}.visual{padding:16px}.tank{height:220px}}