:root{
  --bg:#0b0f17;
  --bg-soft:#0e1525;
  --fg:#e8ecf8;
  --muted:#a5b0c8;
  --primary:#5b8cff;        /* Indigo Blue */
  --primary-ink:#0a1225;
  --accent:#44e4a5;         /* Mint */
  --accent-2:#ffd166;       /* Honey */
  --surface:#0f1729;
  --surface-2:#121b31;
  --border:rgba(255,255,255,.08);
  --card:#0e1628;
  --glow:rgba(91,140,255,.35);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans JP","PingFang SC","Hiragino Sans","Microsoft YaHei",sans-serif;color:var(--fg);background:
  radial-gradient(1200px 600px at -10% -20%, rgba(68,228,165,.10), transparent 60%),
  radial-gradient(1000px 500px at 120% -30%, rgba(91,140,255,.12), transparent 60%),
  linear-gradient(180deg, var(--bg), var(--bg-soft) 50%, var(--bg) 100%);
}
a{color:var(--accent);text-decoration:none}
a:hover{opacity:.9;text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:0 16px}
.header{position:sticky;top:0;z-index:30;background:rgba(4,8,16,.72);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--border);box-shadow:0 4px 24px rgba(0,0,0,.2)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.02em}
.brand-logo{width:32px;height:32px;border-radius:8px;
  background:conic-gradient(from 180deg at 50% 50%, #5b8cff, #44e4a5, #ffd166, #5b8cff);
  box-shadow:0 0 0 3px rgba(91,140,255,.15), 0 8px 30px var(--glow);
}
.nav-links{display:flex;gap:18px;align-items:center}
.nav-links a{color:var(--fg);opacity:.92;padding:6px 8px;border-radius:8px}
.nav-links a:hover{background:rgba(255,255,255,.06)}
.lang-switch{position:relative}
.lang-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 10px;border:1px solid var(--border);border-radius:10px;background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02))}
.menu-toggle{display:none;background:none;border:none;font-size:22px;color:var(--fg)}
@media (max-width:840px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(8,12,22,.98);border-bottom:1px solid var(--border);padding:12px 16px;flex-direction:column;gap:10px}
  .menu-toggle{display:block}
}
.hero{position:relative;overflow:hidden;padding:88px 0;
  background:
   radial-gradient(1200px 600px at 20% -10%, rgba(91,140,255,.35), transparent 60%),
   radial-gradient(1000px 500px at 80% -20%, rgba(68,228,165,.25), transparent 60%);
}
.hero:before{content:"";position:absolute;inset:-120px -40px auto -40px;height:260px;
  background:radial-gradient(800px 140px at 50% 120%, rgba(255,209,102,.18), transparent 60%);
  filter:blur(12px);pointer-events:none;
}
.hero h1{font-size:42px;line-height:1.12;margin:0 0 12px 0;background:linear-gradient(90deg,#fff, #bcd4ff 50%, #b7ffe4);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:18px;margin:0 0 20px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 16px;border-radius:12px;border:1px solid var(--border);font-weight:700;letter-spacing:.02em;transition:transform .12s ease, box-shadow .2s ease}
.btn.primary{background:linear-gradient(180deg, #6a98ff, #4c79ff);color:#fff;border-color:transparent;box-shadow:0 10px 30px var(--glow)}
.btn.primary:hover{transform:translateY(-1px);box-shadow:0 14px 38px var(--glow)}
.btn:hover{transform:translateY(-1px)}
.grid{display:grid;gap:18px}
.cards-3{grid-template-columns:repeat(3,1fr)}
@media (max-width:900px){.cards-3{grid-template-columns:1fr}}
.card{background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:0 8px 24px rgba(0,0,0,.18);transition:transform .15s ease, box-shadow .2s ease}
.card h3{margin:0 0 8px}
.card:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(0,0,0,.25)}
.section{padding:56px 0;background:transparent}
.section:nth-of-type(even){background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.02))}
.section h2{margin:0 0 12px;font-size:28px}
.footer{margin-top:32px;border-top:1px solid var(--border);padding:20px 0;color:#b4bed6;font-size:14px;background:rgba(6,10,18,.6)}
.list{padding-left:18px}
.table{width:100%;border-collapse:collapse;border:1px solid var(--border);background:rgba(255,255,255,.02)}
.table th,.table td{border:1px solid var(--border);padding:10px;text-align:left}
.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.02));border:1px solid var(--border);font-size:12px}
.notice{font-size:12px;color:var(--muted)}
.cookie{position:fixed;bottom:16px;left:16px;right:16px;background:rgba(8,12,22,.98);border:1px solid var(--border);border-radius:12px;padding:12px;display:none;z-index:50;box-shadow:0 10px 36px rgba(0,0,0,.5)}
.cookie.show{display:block}
.success{padding:12px;border:1px solid rgba(68,228,165,.25);background:rgba(68,228,165,.09);border-radius:10px;margin-top:12px}
    

/* === Sticky Footer Fix (Flex layout) === */
html, body {
  height: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header.header {
  flex: 0 0 auto;
}

main {
  flex: 1 0 auto;
  display: block;
}

footer.footer {
  flex-shrink: 0;
  margin-top: auto;
}


/* === Smooth Page Transition & Layout Stability (v3.1 patch) === */
html {
  scrollbar-gutter: stable both-edges;
}

header.header {
  min-height: 64px;
  display: flex;
  align-items: center;
}

.nav a,
.nav button {
  border: 1px solid transparent;
  font-weight: 500;
}
.nav a:hover,
.nav a:focus,
.nav a.active {
  border-color: transparent;
  font-weight: 500;
  opacity: 0.9;
}

.header .logo img {
  width: 140px;
  height: auto;
  aspect-ratio: 140/40;
  display: block;
}

body.fade-transition {
  opacity: 0;
  transition: opacity 0.12s ease-in-out;
}
body.fade-transition.is-visible {
  opacity: 1;
}


/* === v3.2 Language Switch Button Text Color Fix === */
.lang-switch,
.lang-switch button,
.lang-switch a {
  color: #e8f0ff !important;  /* soft light text for dark bg */
  font-weight: 500;
}

.lang-switch svg {
  filter: brightness(1.2);
}

.lang-switch:hover,
.lang-switch a:hover,
.lang-switch button:hover {
  color: #ffffff !important;
  opacity: 0.9;
}


/* === v3.3 Contact page: 2-column form + map === */
.contact-flex{
  display:flex;
  flex-wrap:wrap;
  gap:24px;
}
.contact-form{ flex:1 1 50%; min-width:300px; }
.contact-map{ flex:1 1 50%; min-width:300px; }
.contact-map .map-title{
  margin:0 0 10px;
  font-size:1.1rem;
  color:#e8f0ff;
  opacity:.9;
}
.contact-map-card{
  width:100%;
  min-height:380px;
  background: rgba(255,255,255,0.03);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 6px 18px rgba(0,0,0,0.35);
}
.contact-map-card iframe{
  width:100%; height:100%; border:0;
  display:block;
}
@media (max-width: 768px){
  .contact-form, .contact-map{ flex:1 1 100%; }
  .contact-map-card{ min-height:320px; }
}


/* === v3.3.1 Contact form + map: force side-by-side on desktop (CSS Grid) === */
.contact-flex{
  display:grid !important;
  grid-template-columns: 1fr 1fr !important; /* 50% / 50% */
  align-items: start;
  gap: 24px;
}
.contact-form, .contact-map{
  min-width: 0;            /* allow grid to shrink evenly */
}
.contact-form form{ width: 100%; }

/* Map card look consistent with About page */
.contact-map .map-title{
  margin: 0 0 10px;
  font-size: 1.1rem;
  color: #e8f0ff;
  opacity: .9;
}
.contact-map-card{
  width: 100%;
  min-height: 420px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}
.contact-map-card iframe{
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* Mobile fallback: stack vertically */
@media (max-width: 900px){
  .contact-flex{
    grid-template-columns: 1fr !important;
  }
  .contact-map-card{ min-height: 360px; }
}


/* === v3.3.2 Contact map: force full visible area === */
/* Fix: some global resets set iframe {height:auto}, causing partial map. */
.contact-map-card{
  height: 460px;            /* fixed height on desktop to avoid empty area */
  min-height: unset;        /* don't rely on min-height */
}
.contact-map-card iframe{
  width: 100% !important;
  height: 100% !important;  /* ensure fills the card */
  display: block !important;
}

/* Mobile/tablet: slightly shorter but still fixed */
@media (max-width: 900px){
  .contact-map-card{
    height: 380px;
  }
}