:root{
  --navy:#0b1e3a;
  --blue:#1a73e8;
  --accent:#ff7a1a;
  --bg:#f6f8fc;
  --text:#1c2430;
  --muted:#5b6675;
  --line:#e3e8f0;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,system-ui,-apple-system,sans-serif;
  color:var(--text);background:#fff;line-height:1.75;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* buttons */
.btn{
  display:inline-block;background:var(--blue);color:#fff;font-weight:700;
  padding:14px 28px;border-radius:999px;transition:.2s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(26,115,232,.35)}
.btn.ghost{background:transparent;border:1.5px solid rgba(255,255,255,.6)}

/* header */
header{
  position:sticky;top:0;z-index:20;background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{font-weight:800;font-size:22px;letter-spacing:.06em;color:var(--navy)}
.logo span{color:var(--blue)}
.logo img{height:40px;display:block}
.nav ul{display:flex;gap:26px;list-style:none;align-items:center}
.nav ul a{color:var(--muted);font-weight:600;font-size:14px}
.nav ul a:hover{color:var(--blue)}
.nav ul a.nav-cta{padding:10px 20px;font-size:14px}
.nav ul a.btn,.nav ul a.btn:hover{color:#fff}
@media(max-width:720px){.nav ul{display:none}}

/* hero */
.hero{
  background:radial-gradient(1200px 500px at 80% -10%,#173a6e 0,var(--navy) 55%);
  color:#fff;padding:96px 0 108px;position:relative;overflow:hidden;
}
.hero:after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(26,115,232,.45),transparent 60%);filter:blur(10px);
}
.hero h1{font-size:clamp(28px,5vw,46px);line-height:1.35;font-weight:800;letter-spacing:.01em}
.hero h1 em{color:var(--accent);font-style:normal}
.hero p{margin-top:22px;font-size:clamp(15px,2.2vw,18px);color:#cdd8ea;max-width:640px}
.hero .cta{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.badge{display:inline-block;background:rgba(26,115,232,.2);border:1px solid rgba(120,170,255,.4);
  color:#bcd4ff;font-size:13px;font-weight:700;padding:6px 14px;border-radius:999px;margin-bottom:22px}

/* section common */
section.block{padding:84px 0}
.eyebrow{color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.14em;text-transform:uppercase}
.h2{font-size:clamp(24px,3.6vw,34px);font-weight:800;color:var(--navy);margin:8px 0 12px}
.lead{color:var(--muted);max-width:640px}

/* services */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
@media(max-width:820px){.grid{grid-template-columns:1fr}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  transition:.25s;
}
.card:hover{border-color:#c6d6f5;box-shadow:0 14px 30px rgba(11,30,58,.08);transform:translateY(-4px)}
.card .ico{
  width:52px;height:52px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--blue),#0b57d0);color:#fff;font-size:24px;margin-bottom:18px;
}
.card h3{font-size:19px;color:var(--navy);margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}

/* flow */
.flow{background:var(--bg)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px}
@media(max-width:820px){.steps{grid-template-columns:1fr 1fr}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.step .no{color:var(--accent);font-weight:800;font-size:14px;letter-spacing:.1em}
.step h4{margin:6px 0;color:var(--navy);font-size:16px}
.step p{color:var(--muted);font-size:14px}

/* company info table */
.info{margin-top:24px;border-top:1px solid var(--line)}
.info-row{display:flex;padding:16px 0;border-bottom:1px solid var(--line)}
.info-label{width:160px;color:var(--muted);font-weight:700}
.info-service{display:flex;align-items:center;gap:10px}
.info-service img{height:44px}

/* footer */
footer{background:var(--navy);color:#9fb0c8;padding:40px 0;font-size:14px}
.foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.foot .logo{color:#fff}
.foot-logo{display:inline-block;background:#fff;padding:8px 14px;border-radius:10px;line-height:0}
.foot-logo img{height:30px;display:block}

/* contact form */
.wrap-narrow{max-width:680px}
.contact-page{padding-top:64px}
.form{margin-top:36px;display:flex;flex-direction:column;gap:20px}
.form[hidden]{display:none}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-weight:700;color:var(--navy);font-size:15px}
.field .req{display:inline-block;background:var(--accent);color:#fff;font-size:11px;font-weight:700;
  padding:2px 8px;border-radius:999px;margin-left:6px;vertical-align:middle}
.field input,.field textarea{
  width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:10px;
  font-size:15px;font-family:inherit;color:var(--text);background:#fff;transition:.2s;
}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(26,115,232,.12);
}
.field textarea{resize:vertical}
.field.has-error input,.field.has-error textarea{border-color:#e53935;box-shadow:0 0 0 3px rgba(229,57,53,.1)}
.err{color:#e53935;font-size:13px;min-height:1em}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form-submit{align-self:flex-start;border:none;cursor:pointer;font-size:16px}
.form-submit:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}
.form-note{color:var(--muted);font-size:13px;margin-top:-6px}

/* thanks message */
.thanks{margin-top:36px;text-align:center;padding:48px 24px;background:var(--bg);
  border:1px solid var(--line);border-radius:var(--radius)}
.thanks-ico{width:64px;height:64px;margin:0 auto 20px;border-radius:50%;
  display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),#0b57d0);
  color:#fff;font-size:32px;font-weight:800}
.thanks h2{color:var(--navy);font-size:22px;margin-bottom:12px}
.thanks p{color:var(--muted);margin-bottom:24px}

/* 送信中ローディング */
.loading{position:fixed;inset:0;z-index:1000;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:rgba(11,30,58,.55);backdrop-filter:blur(2px)}
.loading[hidden]{display:none}
.loading p{color:#fff;font-weight:700;font-size:15px;letter-spacing:.04em;margin:0}
.spinner{width:52px;height:52px;border-radius:50%;border:5px solid rgba(255,255,255,.3);border-top-color:#fff;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}