/* ===== Header Override (transparent → solid on scroll) ===== */
header{background:transparent;backdrop-filter:none;box-shadow:none}
header.scrolled{background:rgba(250,250,249,.92);backdrop-filter:blur(20px);padding:12px 0;box-shadow:0 1px 0 rgba(0,0,0,.06)}
.logo{color:var(--white)}
header.scrolled .logo{color:var(--ink)}
.logo-icon.logo-dark{display:none}
.logo-icon.logo-light{display:block}
header.scrolled .logo-icon.logo-dark{display:block}
header.scrolled .logo-icon.logo-light{display:none}
nav a{color:rgba(255,255,255,.75)}
nav a:hover{color:#fff}
header.scrolled nav a{color:var(--gray-600)}
header.scrolled nav a:hover{color:var(--ink)}
.nav-cta{background:rgba(255,255,255,.15)!important;color:#fff!important;border:1px solid rgba(255,255,255,.25)!important}
header.scrolled .nav-cta{background:var(--ink)!important;color:#fff!important;border-color:var(--ink)!important}
.mobile-menu-btn span{background:var(--white)}
header.scrolled .mobile-menu-btn span{background:var(--ink)}

/* ===== Keyframes ===== */
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* ======== Hero with Parallax ======== */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;color:var(--white)}
.hero-bg{position:absolute;inset:0;z-index:0;background:url('../images/paul-calescu-KW3m50XRhjk-unsplash.jpg') center center/cover no-repeat;will-change:transform;transform:scale(1.1)}
.hero-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(135deg,rgba(10,10,15,.85) 0%,rgba(10,10,15,.68) 50%,rgba(0,30,80,.72) 100%)}
.hero-glow-1{position:absolute;top:-40%;right:-15%;width:800px;height:800px;background:radial-gradient(circle,rgba(0,102,255,.18) 0%,transparent 70%);animation:float 8s ease-in-out infinite;z-index:2;pointer-events:none}
.hero-glow-2{position:absolute;bottom:-30%;left:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(255,107,43,.08) 0%,transparent 70%);animation:float 10s ease-in-out infinite reverse;z-index:2;pointer-events:none}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:60px 60px;z-index:2;pointer-events:none}
.hero .container{position:relative;z-index:3}
.hero-eyebrow{font-family:var(--font-en);font-size:13px;font-weight:500;letter-spacing:3px;text-transform:uppercase;color:var(--accent-light);margin-bottom:24px;animation:fadeUp .8s ease forwards}
.hero h1{font-size:clamp(36px,6vw,76px);font-weight:900;line-height:1.2;letter-spacing:-1px;margin-bottom:28px;animation:fadeUp .8s .15s ease both}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--accent),var(--accent-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:17px;line-height:2;color:rgba(255,255,255,.75);max-width:600px;margin-bottom:48px;animation:fadeUp .8s .3s ease both}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;animation:fadeUp .8s .45s ease both}
.hero-stats{display:flex;gap:48px;margin-top:80px;padding-top:40px;border-top:1px solid rgba(255,255,255,.1);animation:fadeUp .8s .6s ease both}
.hero-stat-number{font-family:var(--font-en);font-size:42px;font-weight:700;color:var(--white);line-height:1}
.hero-stat-label{font-size:13px;color:rgba(255,255,255,.7);margin-top:8px}

/* ======== Marquee ======== */
.marquee-section{padding:24px 0;background:var(--gray-100);overflow:hidden}
.marquee-track{display:flex;gap:48px;animation:marquee 30s linear infinite;width:max-content}
.marquee-item{font-family:var(--font-en);font-size:14px;font-weight:500;color:var(--gray-400);letter-spacing:1px;white-space:nowrap;display:flex;align-items:center;gap:12px}
.marquee-item::before{content:'';width:6px;height:6px;background:var(--accent);border-radius:50%;flex-shrink:0}

/* ======== Services ======== */
.services-section{background:var(--white)}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:64px}
.service-card{background:var(--ink);color:#fff;border-radius:var(--radius);padding:48px 36px;position:relative;overflow:hidden;text-decoration:none;transition:all .4s;display:flex;flex-direction:column}
.service-card:hover{transform:translateY(-6px);box-shadow:0 24px 64px rgba(0,0,0,.2)}
.service-card.service-chatbot{background:linear-gradient(135deg,#001040,#0044aa)}
.service-card.service-chatbot:hover{box-shadow:0 24px 64px rgba(0,102,255,.3)}
.service-card.service-geo{background:linear-gradient(135deg,#001a4d,#003399)}
.service-card.service-geo:hover{box-shadow:0 24px 64px rgba(0,102,255,.25)}
.service-card.service-ai{background:var(--ink)}
.service-card.service-ai:hover{box-shadow:0 24px 64px rgba(0,102,255,.2)}
.service-tag{display:inline-block;font-size:11px;font-weight:700;padding:6px 16px;border-radius:100px;margin-bottom:20px;letter-spacing:.5px;background:rgba(0,194,122,.2);color:var(--green);align-self:flex-start}
.service-tag.tag-orange{background:rgba(255,107,43,.2);color:var(--orange)}
.service-tag.tag-accent{background:rgba(0,102,255,.2);color:var(--accent-light)}
.service-icon{font-size:36px;margin-bottom:16px}
.service-card h3{font-size:clamp(20px,2.5vw,26px);font-weight:900;line-height:1.3;margin-bottom:8px}
.service-price{font-family:var(--font-en);font-size:15px;color:rgba(255,255,255,.7);margin-bottom:16px}
.service-price strong{font-size:24px;color:var(--orange);font-weight:700}
.service-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7);margin-bottom:20px}
.service-points{list-style:none;display:flex;flex-direction:column;gap:8px;margin-bottom:28px;flex-grow:1}
.service-points li{font-size:13px;color:rgba(255,255,255,.7);display:flex;align-items:center;gap:8px}
.service-points li::before{content:'✓';width:18px;height:18px;background:var(--green);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:10px;flex-shrink:0}
.service-link{font-family:var(--font-jp);font-size:14px;font-weight:500;color:#fff;display:inline-flex;align-items:center;gap:8px;transition:gap .3s;margin-top:auto}
.service-card:hover .service-link{gap:14px}

/* ======== Hero Stat Accent ======== */
.hero-stat-accent{font-size:32px!important}

/* ======== Search Changed Section ======== */
.search-changed-section{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.search-changed-section::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:700px;height:700px;background:radial-gradient(circle,rgba(0,102,255,.1) 0%,transparent 70%);pointer-events:none}
.search-changed-section .container{position:relative;z-index:2}
.search-changed-grid{display:flex;align-items:stretch;gap:0;margin-top:48px;max-width:720px;margin-left:auto;margin-right:auto}
.search-changed-card{flex:1;padding:36px 32px;border-radius:var(--radius);text-align:center;min-width:0}
.search-changed-card:first-child{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1)}
.search-changed-card.search-changed-new{background:rgba(0,102,255,.1);border:2px solid var(--accent)}
.search-changed-icon{font-size:36px;margin-bottom:12px}
.search-changed-card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:#fff}
.search-changed-card p{font-size:13px;color:rgba(255,255,255,.6);line-height:1.7}
.search-changed-arrow{flex-shrink:0;display:flex;align-items:center;justify-content:center;font-family:var(--font-en);font-size:24px;font-weight:700;color:var(--accent-light);padding:0 24px;letter-spacing:2px}
.search-changed-cta{text-align:center;margin-top:48px}

/* ======== Strengths ======== */
.strengths-section{background:var(--gray-100)}
.strength-list{display:flex;flex-direction:column;margin-top:48px}
.strength-item{display:grid;grid-template-columns:80px 1fr;gap:32px;align-items:start;padding:40px 0;border-bottom:1px solid var(--gray-200)}
.strength-number{font-family:var(--font-en);font-size:56px;font-weight:700;color:var(--gray-200);line-height:1;transition:color .3s}
.strength-item:hover .strength-number{color:var(--accent)}
.strength-content h3{font-size:20px;font-weight:700;margin-bottom:8px}
.strength-content p{font-size:14px;color:var(--gray-600);line-height:1.9}

/* ======== CTA Override (larger for top page) ======== */
.cta{padding:100px 0}
.cta h2{font-size:clamp(28px,4vw,44px);margin-bottom:16px}
.cta p{font-size:16px;margin-bottom:40px}

/* ======== Responsive ======== */
@media(max-width:768px){
  .hero-stats{gap:24px;flex-wrap:wrap}
  .hero-stat-number{font-size:32px}
  .services-grid{grid-template-columns:1fr}
  .search-changed-grid{flex-direction:column;gap:0}
  .search-changed-card{border-radius:0!important}
  .search-changed-card:first-child{border-radius:var(--radius) var(--radius) 0 0!important;border-bottom:none}
  .search-changed-card.search-changed-new{border-radius:0 0 var(--radius) var(--radius)!important}
  .search-changed-arrow{padding:12px 0;font-size:20px}
  .strength-item{grid-template-columns:1fr;gap:8px}
  .strength-number{font-size:36px}
  .hero-glow-1,.hero-glow-2{display:none}
  /* モバイルメニュー展開時：背景白なのでロゴ・リンクをダークに */
  nav.open a{color:var(--gray-600)!important}
  nav.open a:hover{color:var(--ink)!important}
  nav.open .nav-cta{background:var(--ink)!important;color:#fff!important;border-color:var(--ink)!important}
  /* メニュー展開時にロゴとハンバーガーをダークに切り替え */
  .mobile-menu-btn.active span{background:var(--ink)!important}
  .mobile-menu-btn.active ~ .logo,.mobile-menu-btn.active + .logo{color:var(--ink)!important}
  /* ヘッダー：メニュー展開時は白背景にする */
  header:has(nav.open){background:rgba(250,250,249,.98)!important;backdrop-filter:blur(20px)!important;box-shadow:0 1px 0 rgba(0,0,0,.06)!important}
  header:has(nav.open) .logo{color:var(--ink)!important}
  header:has(nav.open) .logo-icon.logo-light{display:none!important}
  header:has(nav.open) .logo-icon.logo-dark{display:block!important}
  header:has(nav.open) .mobile-menu-btn span{background:var(--ink)!important}
}