/* ============================================================
   德馨株式会社 DEXIN · 共通スタイル style.css
   配色：企业蓝 / 白 / 浅灰。所有页面共用这一个文件。
   ============================================================ */
:root{
  --brand:#114C97;
  --brand-bright:#1E6FD0;
  --brand-dark:#0B3168;
  --ink:#0E2540;
  --bg:#FFFFFF;
  --bg-soft:#F3F6FA;
  --line:rgba(14,37,64,.10);
  --muted:rgba(14,37,64,.55);
  --font-jp:'Noto Sans JP',system-ui,-apple-system,sans-serif;
  --font-en:'Barlow Condensed',sans-serif;
  --max:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-jp);color:var(--ink);background:var(--bg);line-height:1.85;font-weight:400;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.en{font-family:var(--font-en);letter-spacing:.12em}

/* ===== 导航 ===== */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{max-width:var(--max);margin:0 auto;padding:13px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:48px;height:36px;flex:none}
.brand-txt{display:flex;flex-direction:column;line-height:1}
.brand-name{font-family:var(--font-en);font-weight:700;font-size:25px;letter-spacing:.14em;color:var(--brand);line-height:1}
.brand-sub{font-size:9.5px;letter-spacing:.3em;color:var(--muted);margin-top:3px}
.menu{display:flex;align-items:center;gap:28px}
.menu a{font-size:14px;font-weight:500;color:var(--ink);opacity:.78;transition:.2s;position:relative;padding:4px 0}
.menu a:hover{opacity:1;color:var(--brand-bright)}
.menu a.active{opacity:1;color:var(--brand)}
.menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand)}
.nav-tel{display:flex;align-items:center;gap:8px;background:var(--brand);color:#fff;padding:9px 18px;border-radius:6px;font-size:14px;font-weight:500;transition:.2s;white-space:nowrap}
.nav-tel:hover{background:var(--brand-bright)}
.nav-tel svg{width:15px;height:15px;stroke:#fff;fill:none}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--ink);transition:.3s}
@media(max-width:860px){
  .menu{position:fixed;top:62px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:8px 0;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(0,0,0,.06);transform:translateY(-130%);transition:.32s;align-items:stretch}
  .menu.open{transform:translateY(0)}
  .menu a{padding:14px 28px;font-size:15px;border-bottom:1px solid var(--line)}
  .menu a.active::after{display:none}
  .nav-tel{display:none}
  .burger{display:flex}
  .nav-in{padding:12px 18px}
}

/* ===== 首页 Hero ===== */
.hero{position:relative;min-height:90vh;display:flex;align-items:center;color:#fff;overflow:hidden;background:linear-gradient(120deg,var(--brand-dark) 0%,var(--brand) 60%,var(--brand-bright) 130%)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(circle at 72% 42%,#000 28%,transparent 78%);-webkit-mask-image:radial-gradient(circle at 72% 42%,#000 28%,transparent 78%)}
.hero::after{content:"";position:absolute;right:-8%;top:50%;width:520px;height:520px;border:1px solid rgba(255,255,255,.14);border-radius:50%;transform:translateY(-50%);box-shadow:0 0 0 60px rgba(255,255,255,.04),0 0 0 140px rgba(255,255,255,.03)}
.hero-in{position:relative;z-index:2;max-width:var(--max);margin:0 auto;padding:120px 28px 80px;width:100%}
.hero-label{font-family:var(--font-en);font-size:15px;letter-spacing:.4em;color:#9FC4F2;margin-bottom:22px}
.hero h1{font-size:clamp(30px,5.2vw,56px);font-weight:700;line-height:1.34;letter-spacing:.02em;margin-bottom:24px}
.hero h1 b{font-weight:900}
.hero p{font-size:clamp(15px,1.8vw,18px);font-weight:300;max-width:580px;color:rgba(255,255,255,.88);margin-bottom:40px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}

/* ===== 内页头部 banner ===== */
.page-hero{position:relative;background:linear-gradient(120deg,var(--brand-dark),var(--brand));color:#fff;padding:140px 28px 56px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:42px 42px;mask-image:radial-gradient(circle at 85% 30%,#000 20%,transparent 70%);-webkit-mask-image:radial-gradient(circle at 85% 30%,#000 20%,transparent 70%)}
.page-hero-in{position:relative;max-width:var(--max);margin:0 auto}
.page-hero .en{font-size:14px;letter-spacing:.34em;color:#9FC4F2;font-weight:600}
.page-hero h1{font-size:clamp(28px,4vw,40px);font-weight:700;margin-top:6px;letter-spacing:.04em}
.crumb{margin-top:14px;font-size:12.5px;color:rgba(255,255,255,.6)}
.crumb a:hover{color:#fff}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;gap:9px;padding:14px 28px;border-radius:7px;font-weight:500;font-size:15px;transition:.25s;cursor:pointer}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none}
.btn-primary{background:#fff;color:var(--brand)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.22)}
.btn-ghost{border:1px solid rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-blue{background:var(--brand);color:#fff}
.btn-blue:hover{background:var(--brand-bright);transform:translateY(-2px)}

/* ===== 区块 ===== */
section{scroll-margin-top:74px}
.wrap{max-width:var(--max);margin:0 auto;padding:90px 28px}
.soft{background:var(--bg-soft)}
.sec-head{margin-bottom:52px}
.sec-head.center{text-align:center}
.sec-en{font-family:var(--font-en);font-size:14px;letter-spacing:.32em;color:var(--brand-bright);font-weight:600}
.sec-title{font-size:clamp(25px,3.4vw,34px);font-weight:700;margin-top:8px;letter-spacing:.03em}
.sec-desc{color:var(--muted);margin-top:14px;max-width:640px;font-size:15px}
.sec-head.center .sec-desc{margin-left:auto;margin-right:auto}
@media(max-width:768px){.wrap{padding:60px 20px}}

/* ===== 服务卡片 ===== */
.svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:680px){.svc-grid{grid-template-columns:1fr}}
.svc{background:#fff;border:1px solid var(--line);border-radius:12px;padding:34px 30px;transition:.28s;position:relative;overflow:hidden}
.svc::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--brand);transform:scaleY(0);transform-origin:top;transition:.3s}
.svc:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(17,76,151,.12);border-color:transparent}
.svc:hover::before{transform:scaleY(1)}
.svc-ico{width:54px;height:54px;border-radius:12px;background:rgba(30,111,208,.1);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.svc-ico svg{width:27px;height:27px;stroke:var(--brand);fill:none;stroke-width:1.6}
.svc h3{font-size:19px;font-weight:700;margin-bottom:10px;letter-spacing:.02em}
.svc p{font-size:14.5px;color:var(--muted);line-height:1.95}
.svc .tag{display:inline-block;margin-top:14px;font-size:12px;color:var(--brand);background:rgba(30,111,208,.08);padding:3px 10px;border-radius:20px}

/* ===== 选择理由 ===== */
.reasons{display:grid;grid-template-columns:repeat(3,1fr);gap:34px}
@media(max-width:768px){.reasons{grid-template-columns:1fr;gap:24px}}
.reason{text-align:center;padding:10px}
.reason .num{font-family:var(--font-en);font-size:46px;font-weight:700;color:rgba(17,76,151,.18);line-height:1}
.reason h3{font-size:19px;font-weight:700;margin:8px 0 10px}
.reason p{font-size:14.5px;color:var(--muted)}

/* ===== 会社概要 表 ===== */
.table{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;max-width:860px;margin:0 auto}
.row{display:grid;grid-template-columns:210px 1fr;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:none}
.row dt{background:rgba(17,76,151,.04);padding:18px 26px;font-weight:500;font-size:14.5px;color:var(--brand)}
.row dd{padding:18px 26px;font-size:15px}
.row dd small{color:var(--muted);font-size:13px}
@media(max-width:600px){.row{grid-template-columns:1fr}.row dt{padding-bottom:6px}.row dd{padding-top:6px}}

/* ===== 施工实绩 ===== */
.works{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:768px){.works{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.works{grid-template-columns:1fr}}
.work{position:relative;aspect-ratio:4/3;border-radius:10px;overflow:hidden;background:linear-gradient(135deg,#dde6f1,#eef3f9);border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--muted);transition:.25s}
.work img{width:100%;height:100%;object-fit:cover}
.work:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(17,76,151,.1)}
.work svg{width:34px;height:34px;stroke:var(--brand);opacity:.4;fill:none;stroke-width:1.4}
.work span{font-size:12.5px;letter-spacing:.05em}
.work .cap{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(11,49,104,.78));color:#fff;font-size:12.5px;padding:24px 14px 12px;text-align:left}

/* ===== 联系 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:50px;align-items:start}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr;gap:36px}}
.ci{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.ci:last-child{border-bottom:none}
.ci-ico{width:44px;height:44px;flex:none;border-radius:10px;background:rgba(30,111,208,.1);display:flex;align-items:center;justify-content:center}
.ci-ico svg{width:21px;height:21px;stroke:var(--brand);fill:none;stroke-width:1.6}
.ci-label{font-size:12px;letter-spacing:.16em;color:var(--brand-bright);font-family:var(--font-en);font-weight:600}
.ci-val{font-size:16px;font-weight:500;margin-top:2px;word-break:break-word}
.ci-val a:hover{color:var(--brand)}
.qr-row{display:flex;gap:24px;flex-wrap:wrap;margin-top:8px}
.qr{text-align:center}
.qr img{width:140px;height:140px;border:1px solid var(--line);border-radius:10px;padding:6px;background:#fff}
.qr span{display:block;font-size:12.5px;color:var(--muted);margin-top:8px}

.form{background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px 28px;box-shadow:0 10px 30px rgba(17,76,151,.05)}
.fld{margin-bottom:16px}
.fld label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}
.fld label .req{color:#c0392b}
.fld input,.fld textarea{width:100%;padding:12px 14px;background:var(--bg-soft);border:1px solid var(--line);border-radius:7px;color:var(--ink);font-family:var(--font-jp);font-size:14.5px;transition:.2s}
.fld input:focus,.fld textarea:focus{outline:none;border-color:var(--brand-bright);background:#fff;box-shadow:0 0 0 3px rgba(30,111,208,.12)}
.fld textarea{min-height:120px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:480px){.form-row{grid-template-columns:1fr}}
.submit{width:100%;padding:15px;background:var(--brand);color:#fff;border:none;border-radius:7px;font-family:var(--font-jp);font-weight:700;font-size:15px;cursor:pointer;transition:.2s;margin-top:6px}
.submit:hover{background:var(--brand-bright)}
.map-wrap{margin-top:8px;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.map-wrap iframe{width:100%;height:340px;border:0;display:block}

/* ===== CTA 横幅 ===== */
.cta-band{background:var(--brand-dark);color:#fff;text-align:center;padding:64px 28px}
.cta-band h2{font-size:clamp(22px,3vw,30px);font-weight:700;margin-bottom:14px;letter-spacing:.03em}
.cta-band p{color:rgba(255,255,255,.78);margin-bottom:28px;font-size:15px}

/* ===== 页脚 ===== */
.footer{background:#08233f;color:rgba(255,255,255,.62);padding:48px 28px 28px}
.footer-in{max-width:var(--max);margin:0 auto;display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.footer .brand-name{color:#fff;font-size:26px}
.footer .brand-sub{color:rgba(159,196,242,.8)}
.foot-links{display:flex;gap:26px;flex-wrap:wrap;font-size:14px}
.foot-links a{opacity:.8}.foot-links a:hover{opacity:1;color:#9FC4F2}
.foot-info{font-size:13px;line-height:1.9;margin-top:8px}
.foot-copy{max-width:var(--max);margin:30px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;opacity:.7;text-align:center}

/* 进入动画 */
.reveal{opacity:0;transform:translateY(22px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}