*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'Hiragino Sans','Hiragino Kaku Gothic ProN','Meiryo',sans-serif;color:#1a1a1a;background:#fff;font-size:15px;line-height:1.7;}
a{text-decoration:none;color:inherit;}

/* ── Nav ── */
nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 40px;
  border-bottom:1px solid #e8e8e8;
  background:#fff;
  position:sticky;top:0;z-index:100;
}
.logo-area{display:flex;align-items:center;gap:10px;}
.logo-box{
  width:36px;height:36px;background:#3A8FA8;border-radius:5px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.logo-box span{color:#fff;font-size:12px;font-weight:700;letter-spacing:.05em;}
.logo-name{font-size:13px;font-weight:600;line-height:1.3;color:#1a1a1a;}
.logo-sub{font-size:11px;color:#888;}
.nav-links{display:flex;gap:2px;}
.nav-links a{
  font-size:13px;color:#555;padding:7px 13px;
  border-radius:6px;transition:background .15s,color .15s;cursor:pointer;
}
.nav-links a:hover,.nav-links a.active{background:#f0f4f6;color:#3A8FA8;}
.nav-cta{
  font-size:13px;padding:8px 20px;
  background:#3A8FA8;color:#fff;
  border:none;border-radius:7px;cursor:pointer;transition:background .15s;
}
.nav-cta:hover{background:#2e7a91;}

/* ── Hero ── */
.hero{
  padding:88px 40px 80px;
  background:#f4f8f9;
  text-align:center;
}
.hero-badge{
  display:inline-block;background:#d8f0e8;color:#0d6149;
  font-size:12px;padding:4px 16px;border-radius:100px;margin-bottom:22px;font-weight:500;
}
.hero h1{font-size:36px;font-weight:600;line-height:1.45;margin-bottom:18px;color:#1a1a1a;}
.hero p{font-size:15px;color:#555;max-width:520px;margin:0 auto 36px;line-height:1.8;}
.hero-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}
.btn-primary{padding:13px 30px;background:#3A8FA8;color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;transition:background .15s;}
.btn-primary:hover{background:#2e7a91;}
.btn-outline{padding:13px 30px;background:transparent;color:#1a1a1a;border:1px solid #ccc;border-radius:8px;font-size:14px;cursor:pointer;transition:background .15s;}
.btn-outline:hover{background:#f0f0f0;}

/* ── Sections ── */
.section{padding:72px 40px;}
.section.alt{background:#f4f8f9;}
.sec-label{font-size:11px;color:#3A8FA8;font-weight:600;letter-spacing:.12em;text-transform:uppercase;margin-bottom:8px;}
.sec-title{font-size:24px;font-weight:600;margin-bottom:14px;color:#1a1a1a;}
.sec-sub{font-size:14px;color:#666;line-height:1.8;max-width:580px;}

/* ── Services ── */
.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin-top:36px;}
.service-card{
  padding:24px;border:1px solid #e8e8e8;border-radius:12px;
  background:#fff;transition:border-color .2s;
}
.service-card:hover{border-color:#3A8FA8;}
.sicon{
  width:40px;height:40px;border-radius:8px;background:#e6f1fb;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.sicon svg{width:20px;height:20px;stroke:#185FA5;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.service-card h3{font-size:14px;font-weight:600;margin-bottom:8px;}
.service-card p{font-size:13px;color:#666;line-height:1.65;}

/* ── Cases ── */
.cases-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px;margin-top:32px;}
.case-item{
  display:flex;align-items:center;gap:10px;
  padding:13px 16px;border:1px solid #e8e8e8;
  border-radius:8px;background:#fff;
}
.case-dot{width:7px;height:7px;border-radius:50%;background:#3A8FA8;flex-shrink:0;}
.case-item span{font-size:13px;color:#1a1a1a;}

/* ── Flow ── */
.steps{margin-top:32px;}
.step-row{display:flex;gap:20px;align-items:flex-start;padding:20px 0;border-bottom:1px solid #e8e8e8;}
.step-row:last-child{border-bottom:none;}
.step-num{
  width:42px;height:42px;border-radius:50%;background:#3A8FA8;color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;
  flex-shrink:0;margin-top:2px;
}
.step-body{flex:1;}
.step-badge{
  display:inline-block;font-size:11px;background:#e6f1fb;color:#185FA5;
  padding:3px 11px;border-radius:100px;margin-bottom:7px;font-weight:500;
}
.step-body h3{font-size:14px;font-weight:600;margin-bottom:5px;}
.step-body p{font-size:13px;color:#666;line-height:1.65;}

/* ── About ── */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start;margin-top:36px;}
.about-table{width:100%;border-collapse:collapse;}
.about-table tr{border-bottom:1px solid #e8e8e8;}
.about-table tr:last-child{border-bottom:none;}
.about-table td{padding:13px 0;font-size:14px;vertical-align:top;}
.about-table td:first-child{color:#888;width:90px;white-space:nowrap;}
.str-list{display:flex;flex-direction:column;gap:12px;}
.str-item{display:flex;gap:16px;padding:20px;border:1px solid #e8e8e8;border-radius:12px;background:#fff;}
.str-n{font-size:22px;font-weight:600;color:#3A8FA8;min-width:28px;}
.str-b h4{font-size:14px;font-weight:600;margin-bottom:5px;}
.str-b p{font-size:13px;color:#666;line-height:1.65;}
.about-reveal-btn{
  background:#3A8FA8;color:#fff;border:none;border-radius:7px;
  padding:7px 16px;font-size:12px;cursor:pointer;
  display:inline-flex;align-items:center;gap:6px;transition:background .15s;margin-top:2px;
}
.about-reveal-btn:hover{background:#2e7a91;}
.about-reveal-btn svg{width:13px;height:13px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;}
.about-captcha-row{display:none;align-items:center;gap:7px;margin-top:6px;}
.about-captcha-q{font-size:13px;color:#333;font-weight:600;}
.about-captcha-inp{width:48px;padding:5px 7px;font-size:13px;border:1px solid #ccc;border-radius:6px;text-align:center;outline:none;}
.about-captcha-inp:focus{border-color:#3A8FA8;}
.about-captcha-ok{background:#3A8FA8;color:#fff;border:none;border-radius:6px;padding:6px 12px;font-size:12px;cursor:pointer;}
.about-captcha-err{font-size:11px;color:#c0392b;margin-top:4px;display:none;}
.about-mail-shown{display:none;font-size:14px;font-weight:600;margin-top:4px;}
.about-mail-shown a{color:#185FA5;}

/* ── Contact ── */
.contact-wrap{background:#3A8FA8;padding:64px 40px;text-align:center;}
.contact-wrap h2{color:#fff;font-size:24px;font-weight:600;margin-bottom:12px;}
.contact-wrap>p{color:rgba(255,255,255,.88);font-size:14px;margin-bottom:36px;line-height:1.8;}
.contact-cards{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;align-items:stretch;}
.cc{background:#fff;border-radius:12px;padding:22px 30px;min-width:170px;text-align:center;}
.cc .cl{font-size:11px;color:#999;margin-bottom:7px;font-weight:500;}
.cc .cv{font-size:18px;font-weight:600;color:#1a1a1a;}
.mail-cc{background:#fff;border-radius:12px;padding:22px 26px;min-width:250px;text-align:center;}
.mail-cc .cl{font-size:11px;color:#999;margin-bottom:12px;font-weight:500;}
.reveal-btn{
  background:#3A8FA8;color:#fff;border:none;border-radius:8px;
  padding:10px 20px;font-size:13px;cursor:pointer;
  display:inline-flex;align-items:center;gap:8px;transition:background .15s;
}
.reveal-btn:hover{background:#2e7a91;}
.reveal-btn svg{width:15px;height:15px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;}
.captcha-row{display:none;align-items:center;gap:8px;justify-content:center;margin-bottom:10px;}
.captcha-q{font-size:15px;color:#333;font-weight:600;}
.captcha-inp{
  width:54px;padding:7px 8px;font-size:14px;
  border:1px solid #ccc;border-radius:7px;text-align:center;outline:none;
}
.captcha-inp:focus{border-color:#3A8FA8;}
.captcha-ok{background:#3A8FA8;color:#fff;border:none;border-radius:7px;padding:8px 15px;font-size:13px;cursor:pointer;}
.captcha-err{font-size:12px;color:#c0392b;margin-top:6px;display:none;}
.mail-shown{display:none;font-size:16px;font-weight:600;margin-top:6px;}
.mail-shown a{color:#185FA5;}
.cap-hint{font-size:11px;color:#aaa;margin-top:8px;}

/* ── Footer ── */
footer{
  padding:24px 40px;border-top:1px solid #e8e8e8;
  display:flex;justify-content:space-between;align-items:center;
  background:#fff;flex-wrap:wrap;gap:8px;
}
footer p{font-size:12px;color:#999;}

/* ── Responsive ── */
@media(max-width:768px){
  nav{padding:12px 20px;}
  .nav-links{display:none;}
  .hero{padding:60px 20px;}
  .hero h1{font-size:26px;}
  .section{padding:52px 20px;}
  .about-grid{grid-template-columns:1fr;gap:36px;}
  .contact-wrap{padding:48px 20px;}
  footer{padding:20px;flex-direction:column;text-align:center;}
}
.float-nav{
  position:fixed;right:20px;top:50%;transform:translateY(-50%);
  z-index:200;display:flex;flex-direction:column;gap:6px;
}
.float-nav a{
  display:flex;align-items:center;justify-content:flex-end;gap:8px;
  cursor:pointer;text-decoration:none;
}
.float-nav a .fn-label{
  font-size:11px;color:#3A8FA8;background:#fff;
  padding:3px 9px;border-radius:100px;border:1px solid #b8dde8;
  white-space:nowrap;opacity:0;transform:translateX(6px);
  transition:opacity .18s,transform .18s;pointer-events:none;
}
.float-nav a:hover .fn-label{opacity:1;transform:translateX(0);}
.float-nav a .fn-dot{
  width:10px;height:10px;border-radius:50%;
  background:#c8dfe6;border:2px solid #c8dfe6;
  flex-shrink:0;transition:background .18s,border-color .18s,transform .18s;
}
.float-nav a.fn-active .fn-dot{
  background:#3A8FA8;border-color:#3A8FA8;transform:scale(1.25);
}
.float-nav a:hover .fn-dot{background:#3A8FA8;border-color:#3A8FA8;}

@media(max-width:768px){.float-nav{display:none;}}