/* Reset-ish */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

:root{
  --bg: #ffffff;
  --card: #f9fafb;
  --muted: #6b7280;
  --text: #111827;
  --accent: #0ea5e9;
  --accent-2: #06b6d4;
  --accent-green: #14b8a6;
  --border: #e5e7eb;
  --shadow: 0 4px 6px rgba(0,0,0,.07);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.1);
  --radius: 16px;
}

body{ 
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif; 
  color: var(--text); 
  background: var(--bg);
}

/* Mobile optimizations */
@media (max-width: 767px) {
  body {
    font-size: 14px;
    line-height: 1.5;
  }
  
  h1 {
    font-size: 1.6rem !important;
    line-height: 1.3 !important;
  }
  
  h2 {
    font-size: 1.4rem !important;
  }
  
  h3 {
    font-size: 1.1rem !important;
  }
  
  .lead {
    font-size: 0.95rem !important;
  }
  
  .sub {
    font-size: 0.85rem !important;
  }
  
  .section {
    padding: 2.5rem 0 !important;
  }
  
  .hero {
    padding: 2.5rem 0 1.5rem !important;
  }
  
  .container {
    width: 92%;
  }
  
  .btn {
    padding: 0.75rem 1.1rem;
    font-size: 0.9rem;
    width: 100%;
  }
  
  .btn.small {
    padding: 0.65rem 1rem;
    font-size: 0.85rem;
  }
  
  .card {
    padding: 1.2rem !important;
  }
  
  .card h3 {
    font-size: 1.15rem !important;
  }
  
  .price-card {
    padding: 1.4rem !important;
  }
  
  .price {
    font-size: 2rem !important;
  }
  
  .testimonial {
    padding: 1.3rem !important;
  }
  
  .hero-stats {
    gap: 1px !important;
  }
  
  .stat-item {
    padding: 1.3rem 0.8rem !important;
  }
  
  .stat-number {
    font-size: 1.8rem !important;
    margin-bottom: 0.3rem !important;
  }
  
  .stat-label {
    font-size: 0.75rem !important;
  }
  
  .benefit-item {
    padding: 0.8rem 1rem !important;
  }
  
  .benefit-item h3 {
    font-size: 0.9rem !important;
  }
  
  .benefit-item p {
    font-size: 0.8rem !important;
  }
  
  details.faq {
    padding: 0.7rem 0.8rem !important;
    font-size: 0.9rem;
  }
  
  .trust {
    font-size: 0.85rem !important;
    gap: 0.8rem !important;
  }
  
  .cta-row {
    gap: 0.7rem !important;
    flex-direction: column;
  }
  
  .cta-row .btn {
    width: 100%;
  }
}

.container{ width: min(1120px, 94%); margin: 0 auto; }

.btn{ 
  display:inline-flex; 
  align-items:center; 
  justify-content:center; 
  gap:.5rem; 
  padding:.85rem 1.5rem; 
  background: linear-gradient(135deg, #0ea5e9, #14b8a6); 
  color:#fff !important; 
  border-radius: 999px; 
  font-weight: 600; 
  box-shadow: 0 4px 12px rgba(14, 165, 233, .25);
  transition: all .3s ease;
  border: 0;
  cursor: pointer;
  font-size: 1rem;
}
.btn:hover{ 
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(14, 165, 233, .35);
  background: linear-gradient(135deg, #0284c7, #0d9488);
  color:#fff !important;
}
.btn.small{ 
  padding:.85rem 1.5rem; 
  font-size: 1rem;
  font-weight: 600;
}
.btn.ghost{ 
  background: transparent; 
  color: #0ea5e9 !important; 
  border:2px solid #0ea5e9; 
  box-shadow: none; 
}
.btn.ghost:hover{
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(20, 184, 166, 0.1));
  border-color: #14b8a6;
  color: #0d9488 !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(14, 165, 233, .15);
}

/* Header */
.site-header{ 
  position: sticky; 
  top:0; 
  z-index: 100; 
  background: rgba(255,255,255,.95); 
  backdrop-filter: blur(12px); 
  border-bottom:1px solid var(--border); 
}
.nav{ display:flex; align-items:center; justify-content:space-between; padding: 1rem 0; }
.brand{ 
  display:flex; 
  align-items:center; 
  gap:.6rem; 
  font-weight:800; 
  letter-spacing:.3px; 
  font-size: 1.2rem;
  color: var(--text);
}
.brand img{
  display: block;
  height: auto;
}
.desktop-nav{ display:none; gap: 1rem; align-items:center; }
.desktop-nav a{ 
  padding:.6rem .8rem; 
  border-radius:999px; 
  transition: background .2s;
  color: var(--text);
  font-weight: 500;
}
.desktop-nav a:hover{ background: var(--card); }
.desktop-nav .btn:hover {
  background: linear-gradient(135deg, #0284c7, #0d9488) !important;
  color: #fff !important;
}
.menu-btn{ 
  display:grid; 
  gap:4px; 
  background:none; 
  border:0; 
  padding:.6rem; 
  cursor: pointer;
  transition: transform .3s ease;
}
.menu-btn:hover {
  transform: scale(1.1);
}
.menu-btn:active {
  transform: scale(0.95);
}
.menu-line{ 
  width:24px; 
  height:2px; 
  background:var(--text); 
  display:block;
  transition: all .3s ease;
}
.menu-btn[aria-expanded="true"] .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-btn[aria-expanded="true"] .menu-line:nth-child(2) {
  opacity: 0;
}
.menu-btn[aria-expanded="true"] .menu-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-nav{ 
  display:grid; 
  gap:.3rem; 
  padding: .8rem 3%; 
  border-top:1px solid var(--border); 
  background:var(--bg);
  transition: all .3s ease;
}
.mobile-nav[hidden] {
  display: none;
}
.mobile-nav a{ 
  padding:.8rem; 
  border-radius: 10px; 
  color: var(--text);
  transition: all .3s ease;
  text-align: center;
}
.mobile-nav .btn {
  width: 100%;
  margin-top: 0.5rem;
}
.mobile-nav a:hover{ background:var(--card); }

@media (min-width: 960px){
  .desktop-nav{ display:flex; }
  .menu-btn, .mobile-nav{ display:none; }
}

/* Hero */
.hero{ padding: 4rem 0 3rem; background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%); }
.hero-grid{ display:grid; gap: 2.5rem; align-items:center; }
.hero-copy .eyebrow{ 
  color: var(--accent); 
  font-weight: 800; 
  letter-spacing:.12em; 
  font-size:.8rem; 
  margin-bottom: .5rem;
}
.hero-copy h1{ 
  font-size: clamp(2rem, 4vw + 1rem, 3.5rem); 
  line-height:1.15; 
  margin:.4rem 0 1rem; 
  color: var(--text);
}
.hero-copy h1 .highlight{
  background: linear-gradient(135deg, #0ea5e9, #14b8a6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.lead{ color: #4b5563; font-size: 1.1rem; line-height: 1.7; }
.cta-row{ display:flex; gap: 1rem; margin:1.5rem 0; flex-wrap:wrap; }
.trust{ 
  display:flex; 
  gap:1.2rem; 
  padding:0; 
  margin:1.2rem 0 0; 
  list-style:none; 
  color:var(--muted); 
  font-size:.95rem; 
}
.trust li::before{ 
  content: "✓ "; 
  color: #14b8a6; 
  font-weight: 700; 
  margin-right: .3rem; 
}

.hero-stats{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-top: 2rem;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(20, 184, 166, 0.1));
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.15);
}
.stat-item{
  text-align: center;
  padding: 1.8rem 1rem;
  background: #ffffff;
  position: relative;
  transition: transform .3s, background .3s;
}
.stat-item:hover{
  transform: scale(1.05);
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.05), rgba(20, 184, 166, 0.05));
}
.stat-item::after{
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 3px;
  background: linear-gradient(90deg, #0ea5e9, #14b8a6);
  opacity: 0;
  transition: opacity .3s, width .3s;
}
.stat-item:hover::after{
  opacity: 1;
  width: 60%;
}
.stat-number{
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #0ea5e9, #14b8a6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.5rem;
  display: block;
}
.stat-label{
  font-size: .85rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

@media (min-width: 960px){
  .hero-grid{ grid-template-columns: 1.1fr 1fr; gap: 3rem; }
}

/* Sections */
.section{ padding: 4.5rem 0; }
.section.alt{ background: var(--card); }
.center{ text-align:center; }
.sub{ color: var(--muted); margin-top: .5rem; font-size: 1.05rem; }

h2{
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin: 0 0 .5rem;
  color: var(--text);
}

/* Service Cards */
.cards{ 
  display:grid; 
  gap:2rem; 
  margin-top:2rem; 
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.card{ 
  background: #ffffff; 
  border:1px solid var(--border); 
  border-radius: var(--radius); 
  padding: 1.8rem; 
  box-shadow: var(--shadow);
  display:grid; 
  gap:.8rem;
  transition: transform .3s, box-shadow .3s;
}
.card:hover{
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(6, 182, 212, .15);
}
.card h3{ margin:.3rem 0 .2rem; font-size: 1.4rem; color: var(--text); }
.card p{ color: #4b5563; line-height: 1.7; }
.bullets{ 
  margin:.8rem 0 0; 
  padding-left:1.2rem; 
  color:#4b5563; 
}
.bullets li{ padding: .3rem 0; }
.bullets strong{ color: var(--text); font-weight: 600; }
.cards img{ 
  border-radius: 12px; 
  border:1px solid var(--border);
  width: 100%;
  height: auto;
  background: var(--card);
}

@media (min-width: 860px){
  .cards{ grid-template-columns: repeat(2, 1fr); }
}

/* Benefits */
.benefits{ 
  display:grid; 
  gap:.8rem; 
  margin-top:1.5rem; 
}
.benefit-item{ 
  background: #ffffff; 
  border:1px solid var(--border); 
  border-radius: 12px; 
  padding:1rem 1.2rem;
  display: flex;
  gap: .8rem;
  align-items: start;
  transition: border-color .3s, box-shadow .3s, transform .3s;
}
.benefit-item:hover{
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateX(4px);
}
.benefit-icon{
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, #0ea5e9, #14b8a6);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}
.benefit-item h3{ margin:0 0 .2rem; font-size: 1rem; color: var(--text); font-weight: 600; }
.benefit-item p{ margin: 0; color: #6b7280; font-size: .88rem; line-height: 1.6; }

@media (min-width: 900px){
  .benefits{ grid-template-columns: repeat(2, 1fr); }
}

/* Testimonials */
.testimonials{ display:grid; gap:1.5rem; margin-top:2rem; }
.testimonial{ 
  background: #ffffff; 
  border:1px solid var(--border); 
  border-radius: var(--radius); 
  padding: 1.8rem; 
  box-shadow: var(--shadow); 
}
.testimonial-header{
  display: flex;
  align-items: center;
  gap: .8rem;
  margin-bottom: 1rem;
}
.testimonial-badge{
  background: linear-gradient(135deg, #0ea5e9, #14b8a6);
  color: #fff;
  padding: .3rem .8rem;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 700;
}
.testimonial-quote{ 
  font-size: 1.05rem; 
  line-height: 1.7; 
  color: var(--text);
  margin-bottom: 1rem;
}
.testimonial-stats{
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.testimonial-stat{
  color: var(--muted);
}
.testimonial-stat strong{
  color: var(--accent);
  font-size: 1.2rem;
  display: block;
}

@media (min-width: 900px){
  .testimonials{ grid-template-columns: repeat(2, 1fr); }
}

/* Pricing */
.pricing{ display:grid; gap:1.5rem; margin-top:2rem; }
.price-card{ 
  background: #ffffff; 
  border:2px solid var(--border); 
  border-radius: var(--radius); 
  padding: 2rem; 
  box-shadow: var(--shadow);
  display:grid; 
  gap:.8rem; 
  position:relative;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.price-card:hover{
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.price{ 
  font-size: 2.5rem; 
  font-weight:800; 
  margin: .5rem 0;
  background: linear-gradient(135deg, #0ea5e9, #14b8a6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.price span{ font-weight:600; font-size:1rem; }
.term{ font-size:1.4rem; margin-left:.3rem;  color: var(--text); }
.price-card ul{ 
  margin:.5rem 0; 
  padding-left:1.2rem; 
  color:#4b5563; 
}
.price-card ul li{ padding: .3rem 0; }
.price-card .btn {
  width: 100%;
  margin-top: 1rem;
}
.price-card.featured{ 
  border-color: var(--accent); 
  box-shadow: 0 12px 40px rgba(6, 182, 212, .2);
}
.badge{ 
  position:absolute; 
  top:12px; 
  right:12px; 
  background: linear-gradient(135deg, #0ea5e9, #14b8a6);
  color:#fff; 
  border-radius:999px; 
  padding:.3rem .7rem; 
  font-size:.75rem; 
  letter-spacing:.06em;
  font-weight: 700;
}

@media (min-width: 900px){
  .pricing{ grid-template-columns: repeat(3, 1fr); }
}

/* FAQ */
details.faq{ 
  background:#ffffff; 
  border:1px solid var(--border); 
  border-radius:12px; 
  padding:.9rem 1rem; 
  margin:.6rem 0;
  transition: background .3s, box-shadow .3s;
}
details.faq:hover{
  box-shadow: var(--shadow);
}
details.faq[open]{ 
  background:var(--card);
  box-shadow: var(--shadow);
}
details.faq summary{ 
  cursor:pointer; 
  font-weight:700;
  list-style: none;
  color: var(--text);
}
details.faq summary::-webkit-details-marker {
  display: none;
}
details.faq summary::before {
  content: "▶";
  display: inline-block;
  margin-right: .5rem;
  color: var(--accent);
  transition: transform .3s;
}
details.faq[open] summary::before {
  transform: rotate(90deg);
}
details.faq p{ color:#4b5563; margin:.6rem 0 0; }

/* Contact */
.contact-form{ 
  display:grid; 
  gap: 1rem; 
  margin-top:1.5rem; 
  max-width: 600px; 
  margin-left: auto; 
  margin-right: auto; 
}
.field{ display:grid; gap:.4rem; }
.field label{ font-weight: 600; color: var(--text); }
input, textarea{ 
  width:100%; 
  padding:.9rem 1rem; 
  border-radius: 12px; 
  border:1px solid var(--border); 
  background:#ffffff; 
  color:var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color .3s, box-shadow .3s;
}
textarea{
  resize: vertical;
}
input:focus, textarea:focus{
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, .1);
}
.status{ 
  margin-top:.8rem; 
  color: var(--accent); 
  min-height: 1.25rem; 
  text-align: center;
  font-weight: 600;
}

/* Footer */
.site-footer{ 
  border-top:1px solid var(--border); 
  padding: 2rem 0; 
  background:var(--card); 
  margin-top: 3rem; 
}
.footer-grid{ display:grid; gap:1rem; align-items:center; }
.footer-nav{ display:flex; gap:1rem; flex-wrap:wrap; color: var(--muted); }
.footer-nav a:hover{ color: var(--accent); }
.muted{ color: var(--muted); }

@media (min-width: 820px){
  .footer-grid{ grid-template-columns: 1fr auto; }
}

.br-md{ display:none; }
@media (min-width: 720px){
  .br-md{ display:inline; }
}