:root{
  --bg: #0a0e1a;
  --bg-2: #10162a;
  --text: #eef1fb;
  --text-dim: #9aa3c0;
  --card-bg: #131a2e;
  --card-border: rgba(255,255,255,0.08);
  --radius: 22px;
}

*{box-sizing:border-box;margin:0;padding:0;}

body{
  min-height:100vh;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(79,142,247,0.16), transparent 60%),
    radial-gradient(1000px 500px at 90% 10%, rgba(242,201,76,0.10), transparent 55%),
    var(--bg);
  color:var(--text);
  font-family:"Noto Sans TC","Segoe UI",-apple-system,BlinkMacSystemFont,sans-serif;
  overflow-x:hidden;
  position:relative;
}

/* ---------- background orbs ---------- */
.bg-orbs{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:0.35;}
.orb-1{width:420px;height:420px;background:#2563eb;top:-120px;left:-100px;animation:drift 22s ease-in-out infinite;}
.orb-2{width:380px;height:380px;background:#7c3aed;bottom:-140px;right:-80px;animation:drift 26s ease-in-out infinite reverse;}
.orb-3{width:300px;height:300px;background:#f2c94c;top:40%;left:60%;opacity:0.18;animation:drift 30s ease-in-out infinite;}
@keyframes drift{
  0%,100%{transform:translate(0,0) scale(1);}
  50%{transform:translate(40px,-30px) scale(1.08);}
}

/* ---------- hero ---------- */
.hero{
  position:relative;z-index:1;
  text-align:center;
  padding:72px 24px 40px;
}
.hero-eyebrow{
  letter-spacing:.35em;
  text-transform:uppercase;
  font-size:12px;
  color:var(--text-dim);
  margin-bottom:14px;
}
.hero-title{
  font-size:clamp(28px,5vw,48px);
  font-weight:900;
  background:linear-gradient(90deg,#8ab4ff,#c9a6ff 45%,#f2c94c);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-bottom:14px;
}
.hero-subtitle{
  color:var(--text-dim);
  font-size:clamp(14px,2vw,17px);
  max-width:560px;
  margin:0 auto;
}

/* ---------- grid ---------- */
.grid{
  position:relative;z-index:1;
  max-width:1200px;
  margin:0 auto;
  padding:20px 24px 80px;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:28px;
}

/* ---------- card ---------- */
.card{
  --accent1:#2563eb;
  --accent2:#60a5fa;
  position:relative;
  display:flex;
  flex-direction:column;
  border-radius:var(--radius);
  background:var(--card-bg);
  border:1px solid var(--card-border);
  overflow:hidden;
  text-decoration:none;
  color:var(--text);
  isolation:isolate;
  transform:translateY(0) scale(1);
  transition:transform .45s cubic-bezier(.2,.8,.2,1), box-shadow .45s ease, border-color .45s ease;
  aspect-ratio: 4 / 5;
}

.card::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:2;
  border-radius:var(--radius);
  padding:1.5px;
  background:linear-gradient(135deg,var(--accent1),var(--accent2));
  -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  opacity:0;
  transition:opacity .4s ease;
  pointer-events:none;
}

.card:hover,
.card:focus-visible{
  transform:translateY(-10px) scale(1.02);
  box-shadow:0 22px 50px -18px var(--accent1);
  border-color:transparent;
}
.card:hover::before,
.card:focus-visible::before{opacity:1;}

.card-media{
  position:relative;
  flex:1 1 auto;
  overflow:hidden;
}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  display:block;
  transition:transform .6s cubic-bezier(.2,.8,.2,1), filter .5s ease;
  filter:saturate(0.92) brightness(0.92);
}
.card:hover .card-media img{
  transform:scale(1.08);
  filter:saturate(1.1) brightness(1);
}

.card-glow{
  position:absolute;inset:0;
  background:linear-gradient(180deg, transparent 40%, var(--card-bg) 96%);
  opacity:.9;
  transition:opacity .4s ease, background .4s ease;
}
.card:hover .card-glow{
  background:linear-gradient(180deg, transparent 20%, var(--card-bg) 92%),
             radial-gradient(120% 120% at 50% 100%, var(--accent1) 0%, transparent 60%);
  opacity:.55;
}

.card-body{
  position:relative;
  z-index:1;
  padding:20px 22px 24px;
  display:flex;
  flex-direction:column;
  gap:6px;
}

.card-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:10px;
  font-size:16px;
  font-weight:700;
  margin-bottom:6px;
  background:linear-gradient(135deg,var(--accent1),var(--accent2));
  color:#0a0e1a;
  box-shadow:0 6px 18px -6px var(--accent1);
}

.card-title{
  font-size:22px;
  font-weight:900;
}

.card-desc{
  font-size:13.5px;
  color:var(--text-dim);
  line-height:1.5;
  min-height:38px;
}

.card-cta{
  margin-top:10px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--accent2);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.card-cta .arrow{
  display:inline-block;
  transition:transform .35s ease;
  font-style:normal;
}
.card:hover .card-cta .arrow{transform:translateX(6px);}

/* per-service accent colors */
.card[data-theme="copilot"]{--accent1:#1f6feb;--accent2:#58a6ff;}
.card[data-theme="ai"]{--accent1:#6d5bd0;--accent2:#8ec5fc;}
.card[data-theme="studio"]{--accent1:#7c3aed;--accent2:#ec4899;}
.card[data-theme="m365"]{--accent1:#5b5fc7;--accent2:#2b88d8;}
.card[data-theme="powerbi"]{--accent1:#f2994a;--accent2:#f2c94c;}
.card[data-theme="defender"]{--accent1:#0f7fd6;--accent2:#2dd4bf;}
.card[data-theme="azure"]{--accent1:#0078d4;--accent2:#7b61ff;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;z-index:1;
  text-align:center;
  padding:24px;
  color:var(--text-dim);
  font-size:12.5px;
  border-top:1px solid var(--card-border);
}
.site-footer p{margin:2px 0;}
.footer-credit{opacity:.7;}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  .orb, .card, .card-media img, .card-cta .arrow{animation:none !important;transition:none !important;}
}

@media (max-width:520px){
  .grid{gap:18px;padding:12px 16px 60px;}
  .card{aspect-ratio:1/1.05;}
}