/* ===== Cocone - SaaS LP ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --blue-50:#eff6ff;--blue-100:#dbeafe;--blue-200:#bfdbfe;
  --blue-500:#3b82f6;--blue-600:#2563eb;--blue-700:#1d4ed8;--blue-800:#1e40af;
  --gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;
  --gray-500:#6b7280;--gray-700:#374151;--gray-900:#111827;
  --white:#ffffff;
  --radius:12px;--radius-lg:20px;
  --shadow:0 1px 3px rgba(0,0,0,.1);
  --shadow-lg:0 10px 40px rgba(0,0,0,.08);
}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans JP',sans-serif;color:var(--gray-900);line-height:1.7;background:var(--white)}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.center{text-align:center}

/* Header */
.header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--gray-200);z-index:100}
.header-inner{display:flex;align-items:center;justify-content:space-between;max-width:1120px;margin:0 auto;padding:0 24px;height:64px}
.logo{display:flex;align-items:center;gap:8px;font-size:1.3rem;font-weight:700;color:var(--blue-600)}
.logo-icon{display:flex}
.nav-list{display:flex;align-items:center;gap:32px;font-size:.95rem;font-weight:500}
.nav-list a{transition:color .2s}
.nav-list a:hover{color:var(--blue-600)}
.nav-cta{background:var(--blue-600);color:var(--white) !important;padding:8px 20px;border-radius:8px;transition:background .2s}
.nav-cta:hover{background:var(--blue-700)}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.hamburger span{display:block;width:24px;height:2px;background:var(--gray-700);transition:transform .3s,opacity .3s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:8px;font-size:.95rem;font-weight:600;transition:all .2s;border:2px solid transparent;cursor:pointer}
.btn-primary{background:var(--blue-600);color:var(--white);border-color:var(--blue-600)}
.btn-primary:hover{background:var(--blue-700);border-color:var(--blue-700)}
.btn-outline{background:transparent;color:var(--blue-600);border-color:var(--blue-600)}
.btn-outline:hover{background:var(--blue-50)}
.btn-white{background:var(--white);color:var(--blue-600);border-color:var(--white)}
.btn-white:hover{background:var(--blue-50)}
.btn-outline-white{background:transparent;color:var(--white);border-color:var(--white)}
.btn-outline-white:hover{background:rgba(255,255,255,.15)}
.btn-lg{padding:16px 36px;font-size:1.05rem}

/* Hero */
.hero{padding:100px 0 60px;background:linear-gradient(180deg,var(--blue-50) 0%,var(--white) 100%)}
.hero-inner{max-width:1120px;margin:0 auto;padding:0 24px;text-align:center}
.hero-badge{display:inline-block;background:var(--blue-100);color:var(--blue-700);padding:6px 16px;border-radius:100px;font-size:.85rem;font-weight:600;margin-bottom:24px}
.hero-title{font-size:2.8rem;font-weight:900;line-height:1.35;margin-bottom:20px;letter-spacing:-.02em}
.hero-sub{font-size:1.15rem;color:var(--gray-500);margin-bottom:36px;line-height:1.8}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:60px}
.hero-visual{max-width:560px;margin:0 auto}
.chat-demo{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-lg);text-align:left}
.chat-bubble{padding:12px 16px;border-radius:var(--radius);margin-bottom:12px;max-width:90%}
.chat-bubble:last-child{margin-bottom:0}
.user-bubble{background:var(--blue-600);color:var(--white);margin-left:auto;border-bottom-right-radius:4px}
.ai-bubble{background:var(--gray-100);color:var(--gray-900);border-bottom-left-radius:4px}
.chat-name{display:block;font-size:.75rem;font-weight:600;margin-bottom:4px;opacity:.7}
.chat-text{font-size:.9rem;line-height:1.6}

/* Sections */
.section{padding:80px 0}
.section-gray{background:var(--gray-50)}
.section-title{font-size:2rem;font-weight:800;text-align:center;margin-bottom:12px}
.section-sub{text-align:center;color:var(--gray-500);margin-bottom:48px;font-size:1.05rem}

/* Problems */
.problem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px}
.problem-card{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);padding:28px 20px;text-align:center;transition:box-shadow .3s}
.problem-card:hover{box-shadow:var(--shadow-lg)}
.problem-icon{margin-bottom:12px;display:flex;justify-content:center}
.problem-card p{font-size:.95rem;font-weight:500}
.problem-answer{text-align:center;font-size:1.1rem;font-weight:700;color:var(--blue-600)}

/* Features */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.feature-card{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:36px;transition:box-shadow .3s}
.feature-card:hover{box-shadow:var(--shadow-lg)}
.feature-icon{margin-bottom:16px}
.feature-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.feature-card p{color:var(--gray-500);font-size:.95rem;line-height:1.7}

/* CTA sections */
.section-cta{background:var(--blue-50);padding:64px 0}
.section-cta-bottom{background:linear-gradient(135deg,var(--blue-600),var(--blue-800));color:var(--white);padding:80px 0}
.cta-title{font-size:1.8rem;font-weight:800;margin-bottom:12px}
.cta-sub{font-size:1.05rem;margin-bottom:32px;opacity:.85}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.pricing-card{background:var(--white);border:2px solid var(--gray-200);border-radius:var(--radius-lg);padding:36px 28px;text-align:center;position:relative;transition:box-shadow .3s}
.pricing-card:hover{box-shadow:var(--shadow-lg)}
.pricing-popular{border-color:var(--blue-600);transform:scale(1.04)}
.popular-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--blue-600);color:var(--white);padding:4px 20px;border-radius:100px;font-size:.8rem;font-weight:700}
.pricing-name{font-size:1.1rem;font-weight:700;margin-bottom:8px;color:var(--gray-700)}
.pricing-price{font-size:1rem;margin-bottom:24px;color:var(--gray-900)}
.price-num{font-size:2.4rem;font-weight:900}
.price-unit{font-size:.85rem;color:var(--gray-500)}
.pricing-features{margin-bottom:28px;text-align:left}
.pricing-features li{padding:8px 0;border-bottom:1px solid var(--gray-100);font-size:.9rem;color:var(--gray-700)}
.pricing-features li::before{content:"✓ ";color:var(--blue-600);font-weight:700}

/* Cases */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:28px}
.case-company{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.case-logo{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:800;font-size:1.2rem;flex-shrink:0;text-shadow:0 1px 3px rgba(0,0,0,.5)}
.case-name{font-weight:700;font-size:.9rem}
.case-industry{font-size:.8rem;color:var(--gray-500)}
.case-quote{font-size:.9rem;line-height:1.7;color:var(--gray-700);margin-bottom:12px;font-style:italic}
.case-person{font-size:.8rem;color:var(--gray-500);text-align:right}

/* Footer */
.footer{background:var(--gray-900);color:var(--gray-200);padding:60px 0 32px}
.footer-inner{display:flex;justify-content:space-between;gap:40px;margin-bottom:40px}
.footer-logo{font-size:1.3rem;font-weight:700;color:var(--white);margin-bottom:4px}
.footer-tagline{font-size:.85rem;color:var(--gray-500)}
.footer-links{display:flex;gap:48px}
.footer-col h4{font-size:.85rem;font-weight:700;color:var(--white);margin-bottom:12px}
.footer-col li{margin-bottom:8px}
.footer-col a{font-size:.85rem;color:var(--gray-500);transition:color .2s}
.footer-col a:hover{color:var(--white)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:.8rem;color:var(--gray-500);line-height:1.8}
.footer-note{margin-top:8px;color:var(--gray-500);font-size:.75rem}
.footer-copy{margin-top:8px}

/* Responsive */
.sp-hide{display:inline}
@media(max-width:768px){
  .sp-hide{display:none}
  .hamburger{display:flex}
  .nav-list{
    display:none;flex-direction:column;position:absolute;top:64px;left:0;right:0;
    background:var(--white);border-bottom:1px solid var(--gray-200);padding:16px 24px;gap:12px;
    box-shadow:0 8px 24px rgba(0,0,0,.08)
  }
  .nav-list.open{display:flex}
  .hero-title{font-size:1.8rem}
  .hero-sub{font-size:1rem}
  .problem-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr;max-width:400px;margin:0 auto}
  .pricing-popular{transform:none}
  .case-grid{grid-template-columns:1fr}
  .footer-inner{flex-direction:column;gap:32px}
  .footer-links{flex-direction:column;gap:24px}
  .section{padding:56px 0}
  .hero{padding:60px 0 40px}
}
@media(max-width:480px){
  .hero-title{font-size:1.5rem}
  .problem-grid{grid-template-columns:1fr}
  .btn-lg{padding:14px 24px;font-size:.95rem}
}