/* BAUAI Minimal-Deluxe Static Site
   - Responsive, accessible, dark mode default
   - No external dependencies
*/
:root{
  --bg:#0b1020;
  --bg2:#0d1430;
  --card:rgba(255,255,255,.06);
  --card2:rgba(255,255,255,.08);
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.68);
  --line:rgba(255,255,255,.14);
  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --radius:16px;
  --radius2:22px;
  --max:1100px;
  --accent:#7c5cff;
  --accent2:#21d4fd;
  --ok:#34d399;
  --warn:#fbbf24;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Arial, sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 800px at 20% 10%, rgba(124,92,255,.25), transparent 50%),
              radial-gradient(900px 700px at 85% 20%, rgba(33,212,253,.20), transparent 55%),
              linear-gradient(180deg, var(--bg), var(--bg2));
  overflow-x:hidden;
}

a{color:inherit; text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--max); margin:0 auto; padding:0 20px}
.muted{color:var(--muted)}
.skip{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip:focus{
  left:16px; top:16px; width:auto; height:auto; padding:10px 12px;
  background:#fff; color:#000; border-radius:10px; z-index:9999;
}

/* Header */
.site-header{
  position:sticky; top:0; z-index:50;
  background: rgba(11,16,32,.55);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.site-header.compact{background: rgba(11,16,32,.75)}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  min-height:72px; gap:14px;
}
.brand{
  display:flex; align-items:center; gap:12px;
  text-decoration:none !important;
}
.logo{
  width:38px;height:38px;border-radius:14px;
  background: radial-gradient(circle at 30% 30%, rgba(33,212,253,.9), rgba(124,92,255,.85));
  box-shadow: 0 12px 30px rgba(124,92,255,.25);
  border:1px solid rgba(255,255,255,.16);
}
.brand-text{display:flex; flex-direction:column; line-height:1.1}
.brand-text strong{letter-spacing:.3px}
.menu{
  display:flex; align-items:center; gap:18px;
}
.menu a{color:rgba(255,255,255,.86)}
.menu a:hover{color:#fff; text-decoration:none}
.menu-toggle{
  display:none;
  background:transparent; border:0; color:#fff;
  width:44px; height:44px; border-radius:14px;
  border:1px solid rgba(255,255,255,.12);
}
.menu-toggle span{
  display:block; width:18px; height:2px; background:rgba(255,255,255,.86);
  margin:4px auto; border-radius:2px;
}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.14);
  text-decoration:none !important;
  font-weight:600;
  letter-spacing:.2px;
  gap:8px;
}
.btn-primary{
  background: linear-gradient(135deg, rgba(124,92,255,.95), rgba(33,212,253,.85));
  border:1px solid rgba(255,255,255,.18);
  box-shadow: 0 18px 40px rgba(33,212,253,.12), 0 18px 40px rgba(124,92,255,.12);
}
.btn-secondary{
  background: rgba(255,255,255,.08);
}
.btn-ghost{
  background: transparent;
}
.btn:hover{transform: translateY(-1px); filter:saturate(1.05)}
.btn:active{transform: translateY(0)}

/* Hero */
.hero{
  position:relative;
  padding: 56px 0 26px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr .9fr;
  gap:26px;
  align-items:start;
}
.eyebrow{
  display:inline-flex; padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color:rgba(255,255,255,.78);
  font-size:13px;
}
.hero h1{
  margin:14px 0 12px;
  font-size:44px;
  line-height:1.08;
  letter-spacing:-.6px;
}
.grad{
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.lead{
  margin:0 0 18px;
  font-size:17px;
  line-height:1.7;
  color:rgba(255,255,255,.82);
}
.cta-row{display:flex; gap:12px; flex-wrap:wrap}
.badge-row{display:flex; gap:10px; flex-wrap:wrap; margin-top:14px}
.badge{
  padding:8px 10px;
  border-radius:999px;
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.78);
  font-size:13px;
}

/* Hero card */
.hero-card .card{
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.06));
  border:1px solid rgba(255,255,255,.14);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.card-top{
  display:flex; gap:14px; align-items:center;
  padding:18px 18px 12px;
}
.icon-bubble{
  width:42px; height:42px; border-radius:16px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
}
.card-title{margin:0; font-size:20px}
.card-sub{margin:4px 0 0; color:var(--muted)}
.card-body{padding: 0 18px 14px}
.checklist{margin:10px 0 12px; padding:0; list-style:none}
.checklist li{
  padding-left:22px; position:relative; margin:8px 0;
  color:rgba(255,255,255,.84)
}
.checklist li:before{
  content:"✓"; position:absolute; left:0; top:0;
  color:var(--ok);
}
.note{
  padding:12px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  color:rgba(255,255,255,.80);
  font-size:14px;
  line-height:1.6;
}
.card-footer{
  display:flex; gap:10px; padding: 14px 18px 18px;
  border-top:1px solid rgba(255,255,255,.10);
  justify-content:flex-end;
  flex-wrap:wrap;
}
.mini-stats{
  display:grid; grid-template-columns: repeat(3,1fr);
  gap:10px; margin-top:12px;
}
.stat{
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius: 16px;
  padding:10px 12px;
}
.stat-k{color:var(--muted); font-size:12px}
.stat-v{font-weight:700; margin-top:2px}

/* Background accents */
.hero-bg{position:absolute; inset:0; pointer-events:none; z-index:-1}
.orb{position:absolute; filter: blur(40px); opacity:.65}
.o1{width:420px;height:420px; left:-130px; top:120px; background: rgba(124,92,255,.35)}
.o2{width:380px;height:380px; right:-120px; top:20px; background: rgba(33,212,253,.25)}
.grid{
  position:absolute; inset:-1px;
  background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse at 40% 10%, black 10%, transparent 70%);
  opacity:.22;
}

/* Sections */
.section{padding: 54px 0}
.section.alt{
  background: rgba(255,255,255,.03);
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.section-head{margin-bottom:18px}
.section-head h2{margin:0 0 8px; font-size:28px}
.cards{
  display:grid;
  grid-template-columns: repeat(3,1fr);
  gap:14px;
}
.p-card{
  background: rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius: var(--radius2);
  padding:16px 16px 14px;
  box-shadow: 0 14px 40px rgba(0,0,0,.22);
}
.p-card-top{display:flex; gap:10px; align-items:center}
.p-icon{
  width:36px;height:36px;border-radius:14px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.14);
}
.p-card h3{margin:0}
.p-card p{color:rgba(255,255,255,.80); line-height:1.65}
.mini{margin:10px 0 0; padding-left:16px; color:rgba(255,255,255,.76)}
.p-actions{margin-top:12px}
.link{color:rgba(255,255,255,.90); text-decoration:none}
.link:hover{text-decoration:underline}

.split{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:18px;
  align-items:start;
}
.kvs{
  margin-top:14px;
  border:1px solid rgba(255,255,255,.10);
  border-radius: 18px;
  background: rgba(255,255,255,.04);
  overflow:hidden;
}
.kv{
  display:grid; grid-template-columns: 120px 1fr;
  gap:10px;
  padding:12px 14px;
  border-top:1px solid rgba(255,255,255,.08);
}
.kv:first-child{border-top:0}
.k{color:var(--muted)}
.v a{color:rgba(255,255,255,.92)}

.panel{
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.05));
  border:1px solid rgba(255,255,255,.14);
  border-radius: var(--radius2);
  padding:16px;
  box-shadow: var(--shadow);
}
.panel h3{margin:0 0 8px}
.panel-actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:12px}

.grid-3{
  display:grid; grid-template-columns: repeat(3,1fr);
  gap:14px;
}
.feature{
  background: rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius: var(--radius2);
  padding:16px;
}
.feature h3{margin:0 0 8px}
.feature p{margin:0; color:rgba(255,255,255,.80); line-height:1.65}

.callout{
  margin-top:16px;
  display:flex; align-items:center; justify-content:space-between;
  gap:14px;
  padding:16px;
  border-radius: var(--radius2);
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
}

/* FAQ */
.faq{display:grid; gap:10px}
details{
  background: rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  padding: 10px 12px;
}
summary{
  cursor:pointer;
  font-weight:700;
  list-style:none;
}
summary::-webkit-details-marker{display:none}
.answer{
  margin-top:10px;
  color:rgba(255,255,255,.80);
  line-height:1.7;
}

/* Contact */
.contact{
  display:flex; align-items:flex-start; justify-content:space-between;
  gap:18px; flex-wrap:wrap;
}
.contact-card{
  min-width: 320px;
  background: rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius: var(--radius2);
  padding:16px;
}
.contact-line{
  display:flex; gap:12px; align-items:center;
  padding:10px 0;
  border-top:1px solid rgba(255,255,255,.08);
}
.contact-line:first-child{border-top:0}
.dot{
  width:10px;height:10px;border-radius:999px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 6px rgba(124,92,255,.10);
}
.label{color:var(--muted); font-size:12px}
.value{font-weight:800; text-decoration:none}
.value:hover{text-decoration:underline}
.fine{margin-top:10px; color:var(--muted); font-size:12px}

/* Prose */
.prose{max-width: 860px}
.prose h1{margin:0 0 8px; font-size:34px}
.prose h2{margin:26px 0 10px; font-size:22px}
.prose p, .prose li{line-height:1.75; color:rgba(255,255,255,.84)}
.prose ul{margin:10px 0 0; padding-left:18px}
.prose hr{border:0; border-top:1px solid rgba(255,255,255,.12); margin:22px 0}

/* Footer */
.footer{
  border-top:1px solid rgba(255,255,255,.08);
  padding:18px 0 26px;
  background: rgba(0,0,0,.10);
}
.footer-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:14px; flex-wrap:wrap;
}
.footer-links{display:flex; gap:14px; flex-wrap:wrap}
.linkish{text-decoration:none !important}

/* Responsive */
@media (max-width: 980px){
  .hero-grid{grid-template-columns: 1fr}
  .cards{grid-template-columns: 1fr}
  .grid-3{grid-template-columns: 1fr}
  .split{grid-template-columns: 1fr}
}
@media (max-width: 760px){
  .menu{display:none}
  .menu.open{
    display:flex;
    position:absolute;
    top:72px; right:16px;
    flex-direction:column;
    background: rgba(11,16,32,.92);
    border:1px solid rgba(255,255,255,.12);
    border-radius:18px;
    padding:12px;
    min-width: 210px;
  }
  .menu-toggle{display:inline-flex}
  .hero h1{font-size:36px}
}