/* ============================================
   Design System — 白基調 + 濃紺アクセント
   ============================================ */
:root{
  --navy: #1a2b4a;
  --navy-light: #2c4269;
  --navy-pale: #eef1f6;
  --ink: #1a1a1a;
  --gray: #6b7280;
  --gray-light: #9ca3af;
  --line: #e5e7eb;
  --paper: #ffffff;
  --bg: #fafbfc;
  --radius: 6px;
  --shadow: 0 2px 16px rgba(26,43,74,.06);
  --shadow-hover: 0 8px 28px rgba(26,43,74,.12);
  --maxw: 1120px;
  --font: "Noto Sans JP","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.85;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;
}
.logo{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--navy)}
.logo span{color:var(--gray);font-weight:400;font-size:12px;display:block;letter-spacing:.14em;margin-top:1px}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a:not(.nav-cta){font-size:13.5px;font-weight:500;color:var(--ink);position:relative;padding:4px 0}
.nav-links a:not(.nav-cta)::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--navy);
  transition:width .25s ease;
}
.nav-links a:not(.nav-cta):hover::after,.nav-links a.active:not(.nav-cta)::after{width:100%}
.nav-links a.active:not(.nav-cta){color:var(--navy);font-weight:700}
.nav-cta{
  display:inline-flex;align-items:center;
  background:var(--navy);color:#fff;padding:10px 20px;border-radius:999px;
  font-size:13px;font-weight:700;transition:background .2s, transform .2s;
  line-height:1.4;
}
.nav-cta:hover,.nav-cta.active{background:var(--navy-light)}
.nav-cta:hover{transform:translateY(-1px)}
.menu-btn{display:none;background:none;border:none;cursor:pointer;padding:8px}
.menu-btn span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;transition:.25s}

/* ---------- Hero ---------- */
.hero{padding:100px 0 80px;text-align:center;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;top:-120px;right:-120px;width:420px;height:420px;
  background:radial-gradient(circle, var(--navy-pale) 0%, transparent 70%);
  z-index:-1;
}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.2em;color:var(--navy);
  font-weight:700;margin-bottom:18px;padding:6px 16px;border:1px solid var(--navy);border-radius:999px;
}
.hero h1{
  font-size:clamp(28px,5vw,46px);font-weight:800;line-height:1.5;letter-spacing:.01em;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--navy);position:relative}
.hero-lead{font-size:16px;color:var(--gray);max-width:560px;margin:0 auto 36px;line-height:1.9}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:999px;
  font-size:14.5px;font-weight:700;transition:transform .2s, box-shadow .2s, background .2s;
  border:1.5px solid transparent;
}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-light);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-outline{border-color:var(--navy);color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff;transform:translateY(-2px)}

/* ---------- Section base ---------- */
section{padding:90px 0}
section.tight{padding:60px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 56px}
.section-tag{font-size:12px;letter-spacing:.2em;color:var(--navy);font-weight:700;margin-bottom:10px}
.section-head h2{font-size:clamp(22px,3.4vw,32px);font-weight:800;letter-spacing:.01em}
.section-head p{color:var(--gray);margin-top:14px;font-size:14.5px}

.alt-bg{background:var(--navy-pale)}

/* ---------- Strengths (3 cards) ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.strength-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 28px;transition:transform .25s ease, box-shadow .25s ease;
}
.strength-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:transparent}
.strength-num{
  font-size:13px;font-weight:800;color:var(--navy);letter-spacing:.1em;
  border-bottom:2px solid var(--navy-pale);padding-bottom:10px;margin-bottom:14px;display:block;
}
.strength-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.strength-card p{font-size:13.5px;color:var(--gray)}

/* ---------- Works Grid ---------- */
.grid-works{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.work-card{
  background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  transition:transform .3s ease, box-shadow .3s ease;
}
.work-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.work-thumb{
  aspect-ratio:4/3;background:var(--navy-pale);display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.work-thumb svg{width:60%;height:60%;opacity:.85;transition:transform .4s ease}
.work-card:hover .work-thumb svg{transform:scale(1.08)}
.work-tag{
  position:absolute;top:12px;left:12px;background:#fff;color:var(--navy);font-size:10.5px;font-weight:700;
  padding:4px 10px;border-radius:999px;letter-spacing:.06em;
}
.work-body{padding:20px 22px}
.work-body h3{font-size:15.5px;font-weight:700;margin-bottom:6px}
.work-body p{font-size:12.5px;color:var(--gray);margin-bottom:14px}
.work-meta{display:flex;gap:8px;flex-wrap:wrap}
.chip{font-size:11px;background:var(--navy-pale);color:var(--navy);padding:4px 10px;border-radius:999px;font-weight:600}
.work-link{font-size:12.5px;font-weight:700;color:var(--navy);display:inline-flex;align-items:center;gap:4px;margin-top:14px}
.work-link:hover{text-decoration:underline}

/* ---------- Flow (5 steps) ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:step}
.flow-step{
  position:relative;padding:0 16px;text-align:center;border-top:3px solid var(--navy-pale);padding-top:24px;
}
.flow-step.is-active,.flow-step{border-top-color:var(--navy)}
.flow-step::before{
  counter-increment:step;content:counter(step);
  position:absolute;top:-17px;left:50%;transform:translateX(-50%);
  width:32px;height:32px;border-radius:50%;background:var(--navy);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;
}
.flow-step h4{font-size:14px;font-weight:700;margin:12px 0 8px}
.flow-step p{font-size:12px;color:var(--gray)}

/* ---------- Pricing ---------- */
.pricing-table{width:100%;border-collapse:collapse;margin-top:10px}
.pricing-table th,.pricing-table td{padding:16px 20px;border-bottom:1px solid var(--line);text-align:left;font-size:13.5px}
.pricing-table th{color:var(--gray);font-weight:700;font-size:12px;letter-spacing:.08em}
.pricing-table td.price{font-weight:800;color:var(--navy);font-size:15px}
.pricing-table tr:last-child td{border-bottom:none}
.pricing-note{font-size:12px;color:var(--gray-light);margin-top:14px}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--navy);color:#fff;text-align:center;padding:70px 24px;border-radius:16px;
  margin:0 24px;
}
.cta-band h2{font-size:clamp(20px,3vw,28px);font-weight:800;margin-bottom:14px}
.cta-band p{color:#c7d0e0;margin-bottom:30px;font-size:14px}
.cta-band .btn-primary{background:#fff;color:var(--navy)}
.cta-band .btn-primary:hover{background:var(--navy-pale)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#9ca3af;padding:56px 0 28px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-grid h4{color:#fff;font-size:13px;font-weight:700;margin-bottom:16px;letter-spacing:.06em}
.footer-grid a{display:block;font-size:13px;color:#9ca3af;margin-bottom:10px;transition:color .2s}
.footer-grid a:hover{color:#fff}
.footer-brand{font-size:16px;font-weight:800;color:#fff;margin-bottom:10px}
.footer-brand p{font-size:12.5px;color:#8892a0;max-width:320px}
.footer-bottom{
  border-top:1px solid #2a2a2a;padding-top:24px;font-size:11.5px;color:#6b7280;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
}

/* ---------- Fade-in on scroll ---------- */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease}
.fade-in.is-visible{opacity:1;transform:translateY(0)}
.fade-in.d1{transition-delay:.08s}
.fade-in.d2{transition-delay:.16s}
.fade-in.d3{transition-delay:.24s}

/* ---------- Inner page header ---------- */
.page-header{padding:70px 0 50px;text-align:center;background:var(--navy-pale)}
.page-header .eyebrow{background:#fff}
.page-header h1{font-size:clamp(24px,4vw,36px);font-weight:800}
.breadcrumb{font-size:12px;color:var(--gray);margin-bottom:14px}
.breadcrumb a{color:var(--navy);font-weight:600}

/* ---------- Content prose ---------- */
.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:20px;font-weight:800;margin:44px 0 16px;padding-top:8px;border-top:1px solid var(--line)}
.prose h2:first-child{border-top:none;margin-top:0}
.prose h3{font-size:16px;font-weight:700;margin:26px 0 10px;color:var(--navy)}
.prose p{margin-bottom:14px;color:#333}
.prose ul{margin:14px 0;padding-left:0}
.prose ul li{position:relative;padding-left:22px;margin-bottom:10px;font-size:14px;color:#333}
.prose ul li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;background:var(--navy);border-radius:50%}

/* ---------- Profile ---------- */
.profile-hero{display:grid;grid-template-columns:220px 1fr;gap:48px;align-items:center;margin-bottom:20px}
.profile-photo{
  width:220px;height:220px;border-radius:50%;background:var(--navy-pale);
  display:flex;align-items:center;justify-content:center;overflow:hidden;border:4px solid #fff;box-shadow:var(--shadow-hover);
}
.timeline{margin-top:20px}
.timeline-item{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:20px 0;border-bottom:1px solid var(--line)}
.timeline-item:last-child{border-bottom:none}
.timeline-date{font-size:12.5px;font-weight:700;color:var(--navy)}
.timeline-item h4{font-size:14.5px;font-weight:700;margin-bottom:6px}
.timeline-item p{font-size:13px;color:var(--gray)}
.skills-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px;margin-top:16px}
.skill-pill{
  background:var(--navy-pale);color:var(--navy);text-align:center;padding:10px 8px;border-radius:8px;
  font-size:12.5px;font-weight:700;
}

/* ---------- Blog ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.blog-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .25s ease, box-shadow .25s ease;
}
.blog-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.blog-thumb{aspect-ratio:16/9;background:var(--navy-pale);display:flex;align-items:center;justify-content:center}
.blog-thumb svg{width:44%;opacity:.75}
.blog-body{padding:20px 22px}
.blog-date{font-size:11.5px;color:var(--gray-light);font-weight:600}
.blog-body h3{font-size:15px;font-weight:700;margin:8px 0 8px;line-height:1.6}
.blog-body p{font-size:12.5px;color:var(--gray)}
.blog-cat{font-size:10.5px;color:var(--navy);font-weight:700;letter-spacing:.06em}

/* ---------- Contact form ---------- */
.contact-layout{display:grid;grid-template-columns:1fr 1.3fr;gap:56px}
.contact-info h3{font-size:16px;font-weight:700;margin-bottom:14px}
.contact-info p{font-size:13.5px;color:var(--gray);margin-bottom:24px}
.info-row{display:flex;gap:14px;margin-bottom:18px;font-size:13.5px}
.info-row .ico{
  width:36px;height:36px;background:var(--navy-pale);border-radius:8px;flex:none;
  display:flex;align-items:center;justify-content:center;color:var(--navy);font-weight:800;font-size:14px;
}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:13px;font-weight:700;margin-bottom:8px}
.form-group label .req{color:#c0392b;font-size:11px;margin-left:4px;font-weight:700}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:13px 14px;border:1.5px solid var(--line);border-radius:6px;font-size:14px;
  transition:border-color .2s;background:#fff;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  outline:none;border-color:var(--navy);
}
.form-group textarea{resize:vertical;min-height:140px}
.form-row-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.honeypot{position:absolute;left:-9999px;opacity:0;pointer-events:none}
.form-msg{
  display:none;padding:14px 16px;border-radius:6px;font-size:13px;margin-bottom:18px;font-weight:600;
}
.form-msg.show{display:block}
.form-msg.ok{background:#e9f7ee;color:#1e7a3d;border:1px solid #b7e4c7}
.form-msg.error{background:#fdecea;color:#c0392b;border:1px solid #f5c6c0}
.submit-btn{width:100%;justify-content:center;padding:15px;font-size:15px}
.form-security{font-size:11.5px;color:var(--gray-light);margin-top:10px;text-align:center}

/* ---------- Speed / Lighthouse badges ---------- */
.badges{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.badge{
  background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 20px;text-align:center;min-width:110px;
}
.badge .num{font-size:22px;font-weight:800;color:var(--navy)}
.badge .label{font-size:10.5px;color:var(--gray);margin-top:4px;letter-spacing:.04em}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .grid-3,.grid-works,.blog-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-layout{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(5,1fr);gap:8px}
}
@media (max-width:768px){
  .nav-links{
    position:fixed;top:72px;left:0;right:0;background:#fff;flex-direction:column;
    padding:24px;gap:20px;border-bottom:1px solid var(--line);
    transform:translateY(-130%);opacity:0;transition:.3s ease;box-shadow:var(--shadow);
  }
  .nav-links.open{transform:translateY(0);opacity:1}
  .menu-btn{display:block}
  .nav-cta{display:none}
  .flow{grid-template-columns:1fr;gap:36px}
  .flow-step{border-top:none;border-left:3px solid var(--navy);padding:0 0 0 24px;text-align:left}
  .flow-step::before{left:-16px;top:-6px;transform:none}
  .profile-hero{grid-template-columns:1fr;text-align:center;justify-items:center}
  .timeline-item{grid-template-columns:1fr}
  .form-row-2{grid-template-columns:1fr}
}
@media (max-width:480px){
  .grid-3,.grid-works,.blog-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero{padding:70px 0 56px}
  section{padding:60px 0}
  .cta-band{padding:50px 20px}
}