/* ====================================================
   ANCIENT STORM CORE株式会社 — SHARED STYLESHEET
   ==================================================== */

@import url('https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New:wght@300;400;500;700;900&family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── CSS Variables ── */
:root {
  --bg:          #F5F7FB;
  --bg-card:     #FFFFFF;
  --primary:     #0B1D3A;
  --secondary:   #1A4F8C;
  --accent:      #3A9FE8;
  --accent-warm: #E05A1C;
  --gray-50:     #F8FAFD;
  --gray-100:    #EEF1F7;
  --gray-200:    #D5DCE8;
  --gray-400:    #8A96AA;
  --text:        #1A1F2E;
  --text-muted:  #596275;
  --white:       #FFFFFF;
  --shadow-sm:   0 2px 8px rgba(11,29,58,0.06);
  --shadow-md:   0 8px 32px rgba(11,29,58,0.10);
  --shadow-lg:   0 24px 64px rgba(11,29,58,0.14);
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --transition:  0.3s cubic-bezier(.4,0,.2,1);
  --max-width:   1200px;
}

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:'Zen Kaku Gothic New','Space Grotesk',sans-serif;
  background:var(--bg);color:var(--text);
  line-height:1.7;-webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
ul{list-style:none}
button{cursor:pointer;font-family:inherit}
input,textarea,select{font-family:inherit}

/* ── Typography ── */
h1,h2,h3,h4,h5,h6{
  font-family:'Space Grotesk','Zen Kaku Gothic New',sans-serif;
  font-weight:700;line-height:1.22;color:var(--primary);
}
h1{font-size:clamp(2.1rem,5vw,3.8rem)}
h2{font-size:clamp(1.7rem,3.5vw,2.6rem)}
h3{font-size:clamp(1.2rem,2.5vw,1.6rem)}
h4{font-size:1.15rem}
p{color:var(--text-muted);font-size:1rem;line-height:1.85}

/* ── Layout ── */
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section-sm{padding:60px 0}
.section-xs{padding:40px 0}

/* ── Section Labels ── */
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.72rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent);margin-bottom:14px;
}
.section-label::before{content:'';width:20px;height:2px;background:var(--accent);display:inline-block}
.section-title{margin-bottom:14px}
.section-desc{max-width:580px;margin-bottom:48px}
.section-desc.centered{margin-left:auto;margin-right:auto;text-align:center}

/* ── HEADER ── */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(245,247,251,0.92);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--gray-200);
  transition:var(--transition);
}
.site-header.scrolled{
  background:rgba(245,247,251,0.98);
  box-shadow:var(--shadow-sm);
}
.nav-container{
  max-width:var(--max-width);margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;justify-content:space-between;
}
.logo{display:flex;align-items:center;gap:10px}
.logo-svg{flex-shrink:0}
.logo-text{
  font-family:'Space Grotesk',sans-serif;font-weight:700;
  font-size:1.05rem;color:var(--primary);letter-spacing:-.02em;
}
.logo-text span{color:var(--accent)}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu>li{position:relative}
.nav-menu>li>a{
  display:block;padding:8px 13px;font-size:.845rem;
  font-weight:500;color:var(--text);border-radius:var(--radius-sm);
  transition:var(--transition);white-space:nowrap;
}
.nav-menu>li>a:hover,.nav-menu>li>a.active{
  color:var(--accent);background:rgba(58,159,232,0.08);
}
.dropdown{
  position:absolute;top:calc(100% + 8px);left:0;
  background:var(--white);border:1px solid var(--gray-200);
  border-radius:var(--radius-md);box-shadow:var(--shadow-md);
  padding:8px;min-width:210px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:var(--transition);
}
.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{
  display:block;padding:8px 12px;font-size:.83rem;
  color:var(--text-muted);border-radius:var(--radius-sm);transition:var(--transition);
}
.dropdown a:hover{color:var(--accent);background:var(--gray-100)}
.nav-cta{
  background:var(--primary) !important;color:var(--white) !important;
  border-radius:8px !important;padding:8px 18px !important;margin-left:8px;
}
.nav-cta:hover{background:var(--secondary) !important}
.hamburger{
  display:none;background:none;border:1.5px solid var(--gray-200);
  padding:8px 10px;color:var(--primary);border-radius:var(--radius-sm);
  font-size:1rem;line-height:1;
}

/* ── HERO ── */
.hero{padding-top:140px;padding-bottom:100px;position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none;z-index:0}
.hero-content{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(58,159,232,.1);border:1px solid rgba(58,159,232,.2);
  color:var(--accent);font-size:.78rem;font-weight:600;
  padding:6px 14px;border-radius:50px;margin-bottom:22px;letter-spacing:.05em;
}
.hero-badge .dot{width:6px;height:6px;background:var(--accent);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{margin-bottom:20px}
.hero p{font-size:1.1rem;margin-bottom:36px;max-width:520px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{display:flex;justify-content:center;align-items:center}

/* ── PAGE HERO ── */
.page-hero{
  padding-top:130px;padding-bottom:80px;
  background:linear-gradient(135deg,#0B1D3A 0%,#1A4F8C 80%,#2A6ABF 100%);
  color:var(--white);position:relative;overflow:hidden;
}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-hero h1{color:var(--white);margin-bottom:14px}
.page-hero p{color:rgba(255,255,255,.72);font-size:1.05rem;max-width:580px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:.78rem;color:rgba(255,255,255,.45);margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.55)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(255,255,255,.25)}

/* ── CARDS ── */
.card{
  background:var(--white);border:1px solid var(--gray-200);
  border-radius:var(--radius-md);padding:32px;
  transition:var(--transition);position:relative;overflow:hidden;
}
.card:hover{
  border-color:rgba(58,159,232,.3);
  box-shadow:var(--shadow-md);transform:translateY(-4px);
}
.card::after{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--secondary),var(--accent));
  opacity:0;transition:var(--transition);
}
.card:hover::after{opacity:1}
.card-icon{
  width:52px;height:52px;background:var(--gray-100);
  border-radius:var(--radius-sm);display:flex;align-items:center;
  justify-content:center;margin-bottom:20px;transition:var(--transition);
}
.card:hover .card-icon{background:rgba(58,159,232,.12)}
.card h3,.card h4{margin-bottom:10px}
.card p{font-size:.9rem}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:.85rem;font-weight:600;color:var(--accent);
}
.card-link:hover{gap:10px}

/* ── BUTTONS ── */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-sm);
  font-weight:600;font-size:.88rem;transition:var(--transition);
  border:none;cursor:pointer;font-family:inherit;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:var(--white)}
.btn-primary:hover{background:var(--secondary);box-shadow:0 8px 24px rgba(11,29,58,.25);transform:translateY(-2px)}
.btn-secondary{background:transparent;color:var(--primary);border:1.5px solid var(--gray-200)}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent);background:rgba(58,159,232,.05)}
.btn-accent{background:var(--accent);color:var(--white)}
.btn-accent:hover{background:#2A8FD8;box-shadow:0 8px 24px rgba(58,159,232,.3);transform:translateY(-2px)}
.btn-white{background:var(--white);color:var(--primary)}
.btn-white:hover{background:var(--gray-100);transform:translateY(-2px)}
.btn-sm{padding:8px 18px;font-size:.82rem}
.btn-lg{padding:16px 34px;font-size:.95rem}

/* ── GRIDS ── */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}

/* ── STATS ── */
.stat-card{text-align:center;padding:32px 20px}
.stat-number{
  font-size:2.6rem;font-weight:800;color:var(--primary);
  font-family:'Space Grotesk',sans-serif;line-height:1;margin-bottom:8px;
}
.stat-number span{color:var(--accent)}
.stat-label{font-size:.85rem;color:var(--text-muted);font-weight:500}

/* ── FEATURE LIST ── */
.feature-list{display:flex;flex-direction:column;gap:16px}
.feature-item{display:flex;align-items:flex-start;gap:14px}
.feature-icon{
  width:32px;height:32px;background:rgba(58,159,232,.1);
  border-radius:6px;display:flex;align-items:center;justify-content:center;
  flex-shrink:0;margin-top:2px;
}
.feature-item h5{font-size:.95rem;margin-bottom:4px}
.feature-item p{font-size:.85rem}

/* ── CTA BANNER ── */
.cta-banner{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);
  border-radius:var(--radius-lg);padding:64px 56px;
  color:var(--white);position:relative;overflow:hidden;
}
.cta-banner h2{color:var(--white);margin-bottom:14px}
.cta-banner p{color:rgba(255,255,255,.7);font-size:1.05rem;margin-bottom:32px;max-width:500px}
.cta-banner-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ── TAGS ── */
.tag{
  display:inline-block;background:var(--gray-100);color:var(--text-muted);
  font-size:.72rem;font-weight:600;padding:4px 12px;border-radius:50px;
  letter-spacing:.04em;
}
.tag-accent{background:rgba(58,159,232,.1);color:var(--accent)}
.tag-primary{background:rgba(11,29,58,.08);color:var(--primary)}

/* ── DIVIDER ── */
.divider{height:1px;background:var(--gray-200);margin:0}

/* ── TOAST ── */
#toast-container{
  position:fixed;bottom:32px;right:32px;z-index:9999;
  display:flex;flex-direction:column;gap:10px;
}
.toast{
  background:var(--primary);color:var(--white);
  padding:15px 22px;border-radius:var(--radius-md);
  box-shadow:var(--shadow-lg);font-size:.85rem;
  max-width:360px;display:flex;align-items:center;gap:12px;
  animation:slideIn .35s ease;
}
.toast.success{border-left:4px solid #22C55E}
.toast.error{border-left:4px solid #EF4444}
.toast.info{border-left:4px solid var(--accent)}
@keyframes slideIn{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:translateX(0)}}
@keyframes slideOut{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(24px)}}
.toast-icon{font-size:1rem;flex-shrink:0}

/* ── FOOTER ── */
.site-footer{background:var(--primary);color:rgba(255,255,255,.78);padding:80px 0 0}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.6fr;
  gap:48px;padding-bottom:64px;
}
.footer-brand .logo-text{color:var(--white)}
.footer-brand p{
  color:rgba(255,255,255,.5);font-size:.85rem;
  margin-top:16px;line-height:1.75;max-width:280px;
}
.footer-social{display:flex;gap:10px;margin-top:20px}
.social-btn{
  width:36px;height:36px;border-radius:8px;
  background:rgba(255,255,255,.08);display:flex;
  align-items:center;justify-content:center;
  transition:var(--transition);color:rgba(255,255,255,.6);
  font-size:.8rem;
}
.social-btn:hover{background:rgba(58,159,232,.2);color:var(--accent)}
.footer-col h5{
  font-size:.7rem;font-weight:700;letter-spacing:.13em;
  text-transform:uppercase;color:rgba(255,255,255,.35);margin-bottom:18px;
}
.footer-col ul li{margin-bottom:9px}
.footer-col ul li a{
  font-size:.85rem;color:rgba(255,255,255,.6);transition:var(--transition);
}
.footer-col ul li a:hover{color:var(--accent)}
.footer-contact-item{
  display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;
  font-size:.83rem;color:rgba(255,255,255,.55);
}
.footer-contact-item svg{flex-shrink:0;margin-top:2px;opacity:.6}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.07);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;
  font-size:.78rem;color:rgba(255,255,255,.3);
}
.footer-bottom a{color:rgba(255,255,255,.3)}
.footer-bottom a:hover{color:var(--accent)}
.footer-bottom-links{display:flex;gap:20px}

/* ── SCROLL REVEAL ── */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}
.reveal-delay-4{transition-delay:.4s}

/* ── FORM ── */
.form-group{margin-bottom:22px}
.form-label{
  display:block;font-size:.83rem;font-weight:600;
  color:var(--text);margin-bottom:7px;
}
.form-control{
  width:100%;padding:11px 15px;
  background:var(--white);border:1.5px solid var(--gray-200);
  border-radius:var(--radius-sm);font-size:.88rem;
  color:var(--text);transition:var(--transition);
}
.form-control:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(58,159,232,.12);
}
textarea.form-control{resize:vertical;min-height:120px}
select.form-control{cursor:pointer}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-help{font-size:.78rem;color:var(--gray-400);margin-top:5px}

/* ── TABLE ── */
.table-responsive{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--gray-200);font-size:.88rem}
th{background:var(--gray-100);font-weight:600;color:var(--primary)}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--gray-50)}

/* ── ACCORDION ── */
.accordion-item{border-bottom:1px solid var(--gray-200)}
.accordion-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:18px 0;background:none;border:none;
  font-size:.95rem;font-weight:600;color:var(--text);text-align:left;
  cursor:pointer;transition:var(--transition);gap:16px;
}
.accordion-btn:hover{color:var(--accent)}
.accordion-icon{
  width:24px;height:24px;border-radius:50%;background:var(--gray-100);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;transition:var(--transition);font-size:.7rem;
}
.accordion-item.open .accordion-icon{background:rgba(58,159,232,.12);color:var(--accent);transform:rotate(180deg)}
.accordion-body{overflow:hidden;max-height:0;transition:max-height .4s ease}
.accordion-body.open{max-height:600px}
.accordion-content{padding:0 0 18px;font-size:.9rem;color:var(--text-muted);line-height:1.8}

/* ── BADGE ── */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  background:rgba(58,159,232,.1);color:var(--accent);
  font-size:.72rem;font-weight:700;padding:4px 10px;
  border-radius:50px;letter-spacing:.05em;
}
.badge-success{background:rgba(34,197,94,.1);color:#16A34A}
.badge-warn{background:rgba(234,179,8,.1);color:#B45309}
.badge-primary{background:rgba(11,29,58,.08);color:var(--primary)}

/* ── TIMELINE ── */
.timeline{position:relative;padding-left:32px}
.timeline::before{
  content:'';position:absolute;left:10px;top:0;bottom:0;
  width:2px;background:var(--gray-200);
}
.timeline-item{position:relative;margin-bottom:40px}
.timeline-item::before{
  content:'';position:absolute;left:-26px;top:4px;
  width:10px;height:10px;border-radius:50%;
  background:var(--accent);border:2px solid var(--white);
  box-shadow:0 0 0 2px var(--accent);
}
.timeline-date{font-size:.78rem;font-weight:600;color:var(--accent);margin-bottom:6px;letter-spacing:.05em}
.timeline-item h4{margin-bottom:6px}
.timeline-item p{font-size:.88rem}

/* ── STEP CARDS ── */
.step-number{
  font-family:'Space Grotesk',sans-serif;font-size:3rem;
  font-weight:800;color:rgba(58,159,232,.15);line-height:1;
  margin-bottom:10px;
}

/* ── PRICING ── */
.pricing-card{
  background:var(--white);border:1.5px solid var(--gray-200);
  border-radius:var(--radius-lg);padding:40px 32px;
  transition:var(--transition);
}
.pricing-card:hover,.pricing-card.featured{
  border-color:var(--accent);box-shadow:var(--shadow-md);
}
.pricing-card.featured{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);
  color:var(--white);transform:scale(1.03);
}
.pricing-card.featured h3,.pricing-card.featured p,.pricing-card.featured li{
  color:rgba(255,255,255,.85);
}
.price{
  font-family:'Space Grotesk',sans-serif;font-size:2.8rem;
  font-weight:800;color:var(--primary);line-height:1;
  margin:16px 0 4px;
}
.pricing-card.featured .price{color:var(--white)}
.price span{font-size:1rem;font-weight:400;color:var(--text-muted)}
.pricing-features{margin:24px 0;display:flex;flex-direction:column;gap:11px}
.pricing-features li{
  display:flex;align-items:center;gap:10px;
  font-size:.88rem;color:var(--text-muted);
}
.pricing-features li::before{
  content:'✓';color:var(--accent);font-weight:700;
  width:16px;flex-shrink:0;
}
.pricing-card.featured .pricing-features li::before{color:rgba(58,159,232,.9)}

/* ── UTILITIES ── */
.text-center{text-align:center}
.text-right{text-align:right}
.text-accent{color:var(--accent)}
.text-white{color:var(--white) !important}
.text-muted{color:var(--text-muted)}
.bg-dark{background:var(--primary)}
.bg-card{background:var(--white)}
.bg-gray{background:var(--gray-100)}
.bg-gradient{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%)}
.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}
.mt-32{margin-top:32px}.mt-48{margin-top:48px}.mt-64{margin-top:64px}
.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}
.mb-32{margin-bottom:32px}.mb-48{margin-bottom:48px}.mb-64{margin-bottom:64px}
.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}
.flex-between{display:flex;align-items:center;justify-content:space-between}
.flex-wrap{flex-wrap:wrap}
.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}.gap-24{gap:24px}
.w-full{width:100%}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ── RESPONSIVE ── */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-5{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-grid{gap:40px}
}
@media(max-width:900px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-actions{justify-content:center}
  .hero p{margin-left:auto;margin-right:auto}
  .hero-visual{display:none}
}
@media(max-width:768px){
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;
    background:var(--white);border-bottom:1px solid var(--gray-200);
    flex-direction:column;align-items:stretch;
    padding:12px 16px 20px;gap:2px;display:none;
    box-shadow:var(--shadow-md);
    max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .nav-menu.active{display:flex}
  .hamburger{display:flex;align-items:center;justify-content:center}
  .dropdown{
    position:static;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:none;background:var(--gray-50);
    padding:4px 0 4px 12px;margin:4px 0 4px 16px;
    border-radius:0;min-width:auto;display:none;
  }
  .has-dropdown.open .dropdown{display:block}
  .nav-cta{margin-left:0 !important}
  .grid-2,.grid-3,.grid-5{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:10px;text-align:center}
  .footer-bottom-links{justify-content:center}
  .section{padding:64px 0}
  .cta-banner{padding:40px 28px}
  .form-row{grid-template-columns:1fr}
  #toast-container{bottom:16px;right:16px;left:16px}
  .toast{max-width:100%}
  .pricing-card.featured{transform:none}
}
@media(max-width:480px){
  .hero{padding-top:110px;padding-bottom:70px}
  .page-hero{padding-top:110px;padding-bottom:60px}
  .btn-lg{padding:13px 24px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .cta-banner-actions{flex-direction:column;align-items:flex-start}
}