:root{
  --navy:#0f172a;
  --navy-soft:#16213e;
  --blue:#2563eb;
  --blue-light:#3b82f6;
  --orange:#f97316;
  --gray-bg:#f5f7fb;
  --gray-line:#e2e8f0;
  --text:#1e293b;
  --text-soft:#64748b;
  --white:#ffffff;
  --radius:14px;
  --shadow:0 10px 30px rgba(15,23,42,0.08);
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN",sans-serif;
  color:var(--text);
  line-height:1.8;
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 24px;}
.sp-only{display:none;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 32px;border-radius:999px;font-weight:700;font-size:15px;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(249,115,22,0.35);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(249,115,22,0.45);}
.btn-ghost{background:rgba(255,255,255,0.12);color:#fff;border:1px solid rgba(255,255,255,0.5);backdrop-filter:blur(4px);}
.btn-ghost:hover{background:rgba(255,255,255,0.22);}
.btn-lg{padding:16px 38px;font-size:16px;}
.btn-sm{padding:10px 22px;font-size:14px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(15,23,42,0.92);backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;}
.logo{font-size:20px;font-weight:900;letter-spacing:.5px;color:#fff;}
.logo-accent{color:var(--orange);}
.nav-desktop{display:flex;gap:36px;}
.nav-desktop a{color:#cbd5e1;font-size:14px;font-weight:500;transition:color .2s;}
.nav-desktop a:hover{color:#fff;}
.nav-cta{margin-left:24px;}
.hamburger{display:none;flex-direction:column;gap:5px;width:28px;}
.hamburger span{display:block;height:2px;background:#fff;border-radius:2px;transition:all .25s;}
.nav-mobile{
  display:none;flex-direction:column;gap:2px;
  background:var(--navy);padding:12px 24px 24px;
  border-top:1px solid rgba(255,255,255,0.08);
}
.nav-mobile a{color:#cbd5e1;padding:12px 0;font-size:15px;border-bottom:1px solid rgba(255,255,255,0.06);}
.nav-mobile .btn{margin-top:14px;text-align:center;}
.nav-mobile.open{display:flex;}

/* ---------- hero ---------- */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;color:#fff;overflow:hidden;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.05);}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(120deg,rgba(15,23,42,0.92) 0%,rgba(15,23,42,0.75) 45%,rgba(37,99,235,0.55) 100%);}
.hero-inner{position:relative;padding-top:120px;padding-bottom:80px;max-width:760px;}
.eyebrow{color:var(--orange);font-weight:700;letter-spacing:2px;font-size:13px;margin-bottom:18px;}
.hero h1{font-size:44px;font-weight:900;line-height:1.5;margin-bottom:24px;}
.hero-lead{font-size:16px;color:#e2e8f0;margin-bottom:36px;max-width:560px;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}

/* ---------- section common ---------- */
section{padding:96px 0;}
.section-eyebrow{color:var(--orange);font-weight:700;letter-spacing:2px;font-size:13px;text-align:center;margin-bottom:12px;}
.section-title{font-size:30px;font-weight:900;text-align:center;margin-bottom:56px;color:var(--navy);}

/* ---------- issues ---------- */
.issues{background:var(--gray-bg);}
.issue-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.issue-card{
  background:#fff;border-radius:var(--radius);padding:32px 24px;text-align:center;
  box-shadow:var(--shadow);
}
.issue-icon{font-size:36px;display:block;margin-bottom:16px;}
.issue-card p{font-size:14px;color:var(--text-soft);font-weight:500;}

/* ---------- service ---------- */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.service-card{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff;}
.service-img{height:150px;background-size:cover;background-position:center;}
.service-card h3{font-size:17px;font-weight:700;margin:20px 20px 10px;color:var(--navy);}
.service-card p{font-size:13.5px;color:var(--text-soft);margin:0 20px 22px;}

/* ---------- strength ---------- */
.strength{background:var(--navy);color:#fff;}
.strength .section-title{color:#fff;}
.strength-list{display:flex;flex-direction:column;gap:32px;max-width:760px;margin:0 auto;}
.strength-item{display:flex;gap:24px;align-items:flex-start;}
.strength-num{font-size:34px;font-weight:900;color:var(--orange);flex-shrink:0;font-family:Arial,sans-serif;}
.strength-item h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.strength-item p{font-size:14px;color:#cbd5e1;}

/* ---------- works ---------- */
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.work-card{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff;}
.work-img{height:170px;background-size:cover;background-position:center;}
.work-tag{font-size:12px;font-weight:700;color:var(--blue);margin:20px 20px 6px;letter-spacing:.5px;}
.work-card h3{font-size:17px;font-weight:700;margin:0 20px 10px;color:var(--navy);}
.work-result{font-size:14px;margin:0 20px 22px;color:var(--text-soft);}
.work-result strong{color:var(--orange);}

/* ---------- voice ---------- */
.voice{background:var(--gray-bg);}
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.voice-card{background:#fff;border-radius:var(--radius);padding:32px 26px;box-shadow:var(--shadow);text-align:center;}
.voice-avatar{width:64px;height:64px;border-radius:50%;background-size:cover;background-position:center;margin:0 auto 18px;border:3px solid var(--white);box-shadow:0 0 0 3px var(--gray-line);}
.voice-text{font-size:14px;color:var(--text-soft);margin-bottom:16px;}
.voice-name{font-size:13px;font-weight:700;color:var(--navy);}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-step{text-align:center;padding:0 12px;}
.flow-num{
  display:flex;align-items:center;justify-content:center;
  width:52px;height:52px;border-radius:50%;
  background:var(--blue);color:#fff;font-weight:900;font-size:20px;
  margin:0 auto 18px;
}
.flow-step h3{font-size:15.5px;font-weight:700;margin-bottom:8px;color:var(--navy);}
.flow-step p{font-size:13px;color:var(--text-soft);}

/* ---------- price ---------- */
.price{background:var(--gray-bg);}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.price-card{
  background:#fff;border-radius:var(--radius);padding:36px 28px;text-align:center;
  box-shadow:var(--shadow);position:relative;border:2px solid transparent;
}
.price-card--featured{border-color:var(--orange);}
.price-badge{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--orange);color:#fff;font-size:12px;font-weight:700;
  padding:6px 18px;border-radius:999px;
}
.price-card h3{font-size:16px;font-weight:700;margin-bottom:14px;color:var(--navy);}
.price-value{font-size:32px;font-weight:900;color:var(--blue);margin-bottom:14px;}
.price-value span{font-size:16px;font-weight:500;color:var(--text-soft);}
.price-desc{font-size:13.5px;color:var(--text-soft);}
.price-note{text-align:center;font-size:13px;color:var(--text-soft);margin-top:32px;}

/* ---------- faq ---------- */
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{background:var(--gray-bg);border-radius:12px;overflow:hidden;}
.faq-q{
  width:100%;text-align:left;padding:20px 24px;font-weight:700;font-size:15px;
  color:var(--navy);position:relative;padding-right:50px;
}
.faq-q::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;color:var(--blue);font-weight:400;transition:transform .25s;
}
.faq-item.open .faq-q::after{transform:translateY(-50%) rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease, padding .3s ease;padding:0 24px;}
.faq-item.open .faq-a{max-height:200px;padding:0 24px 20px;}
.faq-a p{font-size:14px;color:var(--text-soft);}

/* ---------- cta ---------- */
.cta{position:relative;color:#fff;text-align:center;padding:110px 0;}
.cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;}
.cta-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,23,42,0.93),rgba(15,23,42,0.93));}
.cta-inner{position:relative;max-width:560px;margin:0 auto;}
.cta h2{font-size:28px;font-weight:900;margin-bottom:14px;}
.cta > .container > p{color:#cbd5e1;margin-bottom:40px;font-size:15px;}
.contact-form{background:#fff;border-radius:var(--radius);padding:36px;text-align:left;box-shadow:var(--shadow);}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:13.5px;font-weight:700;color:var(--navy);margin-bottom:8px;}
.form-row label span{color:var(--orange);font-size:11px;margin-left:6px;font-weight:700;}
.form-row input,.form-row textarea{
  width:100%;border:1px solid var(--gray-line);border-radius:8px;padding:12px 14px;
  font-family:inherit;font-size:14px;color:var(--text);resize:vertical;
}
.form-row input:focus,.form-row textarea:focus{outline:2px solid var(--blue-light);border-color:transparent;}
.form-submit{width:100%;margin-top:6px;}
.form-demo-note{text-align:center;font-size:12px;color:var(--text-soft);margin-top:14px;}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#94a3b8;padding:48px 0;text-align:center;}
.footer-logo{font-size:18px;font-weight:900;color:#fff;margin-bottom:10px;}
.footer-name{font-size:13.5px;margin-bottom:6px;}
.footer-copy{font-size:12px;}

/* ---------- responsive ---------- */
@media(max-width:960px){
  .issue-grid,.service-grid{grid-template-columns:repeat(2,1fr);}
  .works-grid,.voice-grid,.price-grid{grid-template-columns:repeat(2,1fr);}
  .flow-grid{grid-template-columns:repeat(2,1fr);row-gap:36px;}
}
@media(max-width:760px){
  .sp-only{display:inline;}
  .nav-desktop,.nav-cta{display:none;}
  .hamburger{display:flex;}
  .hero h1{font-size:30px;}
  .hero-lead{font-size:14.5px;}
  .section-title{font-size:24px;margin-bottom:40px;}
  section{padding:64px 0;}
  .issue-grid,.service-grid,.works-grid,.voice-grid,.price-grid,.flow-grid{grid-template-columns:1fr;}
  .strength-item{gap:16px;}
  .contact-form{padding:26px;}
}