/*
Theme Name: Polywell Japan One Page
Author: Polywell Japan
Description: Simple one-page corporate website for Polywell Japan.
Version: 1.0.0
*/
:root{--navy:#063b82;--blue:#0b67c9;--text:#20344d;--muted:#6c7e92;--light:#f5f8fc;--line:#dce5ee}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Yu Gothic",Meiryo,sans-serif;line-height:1.8}
a{text-decoration:none;color:inherit}.container{width:min(1120px,92%);margin:auto}
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:25px}
.header-logo{height:48px;width:auto;display:block}.nav{display:flex;align-items:center;gap:25px;font-size:14px;font-weight:700}
.nav a:hover{color:var(--blue)}.nav .shop{padding:6px 14px;border:1px solid var(--blue);border-radius:20px;color:var(--blue)}
.hero{min-height:560px;display:flex;align-items:center;color:#fff;background:linear-gradient(90deg,#032f69,#075eae)}
.hero-inner{padding:85px 0}.hero-kicker{font-size:14px;letter-spacing:.18em;margin-bottom:15px}
.hero h1{font-size:clamp(40px,5vw,64px);line-height:1.3;margin:0 0 18px}.hero-sub{font-size:19px;margin:0 0 30px}
.button{display:inline-block;background:#1681e6;color:#fff;padding:10px 25px;border-radius:26px;font-weight:700}
.section{padding:82px 0}.section-alt{background:var(--light)}
.section-title{margin:0 0 34px;color:var(--navy);font-size:35px;line-height:1.3}
.section-title span{font-size:13px;color:var(--muted);font-weight:500;margin-left:9px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:start}.lead{font-size:20px;font-weight:700;color:var(--navy)}
.about-copy p{margin:10px 0}.info-list{margin:30px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}
.info-list li{display:grid;grid-template-columns:145px 1fr;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}
.info-list strong{color:var(--navy)}.company-logo{width:min(430px,100%);height:auto;margin-top:18px}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.product-card{padding:27px;background:#fff;border:1px solid var(--line);border-radius:8px}
.product-number{font-size:13px;color:var(--blue);font-weight:800;letter-spacing:.1em}
.product-card h3{margin:7px 0;color:var(--navy);font-size:18px}.product-card p{margin:0;color:var(--muted);font-size:14px}
.history-wrap{border:1px solid var(--line);padding:14px;background:#fff;border-radius:8px}
.history-image{display:block;width:100%;height:auto}
.japan-box{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line)}
.japan-info{padding:45px;background:#fff}.japan-info h3{font-size:24px;color:var(--navy);margin:0 0 22px}
.japan-info p{margin:8px 0}.japan-side{padding:45px;color:#fff;background:linear-gradient(135deg,#063b82,#0b73d4)}
.japan-side h3{font-size:27px;margin:0 0 15px}.shop-link{display:inline-block;margin-top:20px;padding:9px 19px;border:1px solid rgba(255,255,255,.8);border-radius:22px}
.contact{background:#06346e;color:#fff}.contact .section-title{color:#fff}
.contact-grid{display:flex;justify-content:space-between;align-items:center;gap:40px}.contact-text{font-size:22px;font-weight:700}
.contact-details{font-size:14px}.contact-details div{margin:5px 0}.contact-details a{text-decoration:underline}
.footer{background:#03244d;color:#fff;padding:25px 0}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:20px}
.footer-logo{height:38px;width:auto}.footer-copy{font-size:12px}
@media(max-width:850px){.nav{gap:12px;font-size:12px}.about-grid,.japan-box{grid-template-columns:1fr}.product-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.header-inner{height:68px}.header-logo{height:40px}.nav{display:none}.hero{min-height:500px}
.hero-inner{padding:70px 0}.hero h1{font-size:38px}.hero-sub{font-size:16px}.section{padding:62px 0}.section-title{font-size:29px}
.product-grid{grid-template-columns:1fr}.info-list li{grid-template-columns:115px 1fr}.japan-info,.japan-side{padding:32px}
.contact-grid,.footer-inner{flex-direction:column;align-items:flex-start}}