/* common.css */
:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --ink:#0f172a;
  --muted:#667085;
  --line:#e5e7eb;
  --brand:#4f46e5;
  --brand2:#ff4fa3;
  --shadow: 0 10px 30px rgba(15,23,42,.08);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"Hiragino Sans","Yu Gothic",sans-serif;
  color:var(--ink);
  background: radial-gradient(900px 500px at 10% 0%, #eef2ff, transparent 60%),
              radial-gradient(900px 500px at 90% 10%, #fff0fb, transparent 55%),
              var(--bg);
}

a{color:inherit}
.container{max-width:1100px;margin:0 auto;padding:18px}

header.site{
  position:sticky; top:0; z-index:100;
  background:rgba(255,255,255,.86);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.navbar{
  display:flex; align-items:center; justify-content:space-between;
  gap:14px;
  padding:12px 18px;
}
.brand{
  display:flex; align-items:center; gap:10px; text-decoration:none;
  font-weight:800; letter-spacing:.2px;
}
.logo{
  width:36px; height:36px; border-radius:12px;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  box-shadow: var(--shadow);
}
.brand small{display:block;color:var(--muted);font-weight:600;letter-spacing:.1px}
.navlinks{display:flex; gap:10px; flex-wrap:wrap; align-items:center}
.navlinks a{
  text-decoration:none;
  border:1px solid var(--line);
  background:#fff;
  padding:8px 10px;
  border-radius:12px;
  font-size:14px;
  color:var(--muted);
}
.navlinks a:hover{border-color:#cbd5e1;color:var(--ink)}
.navlinks a.active{
  border-color: rgba(79,70,229,.25);
  outline:2px solid rgba(79,70,229,.18);
  color:var(--ink);
}

.mobileBtn{
  display:none;
  border:1px solid var(--line);
  background:#fff;
  padding:8px 10px;
  border-radius:12px;
  cursor:pointer;
}

.hero{
  padding:26px 18px 10px;
}
.hero h1{margin:0 0 8px;font-size:34px;line-height:1.2}
.hero p{margin:0;color:var(--muted);line-height:1.8;max-width:72ch}
.badges{margin-top:12px;display:flex;gap:10px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:999px;
  padding:8px 12px;
  font-size:13px;
  color:var(--muted);
}
.badge b{color:var(--ink)}

.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
  margin-top:14px;
}
.card{
  border:1px solid var(--line);
  background:var(--card);
  border-radius:18px;
  box-shadow: var(--shadow);
  padding:14px;
}
.card h3{margin:8px 0 6px;font-size:16px}
.card p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
.card .meta{margin-top:10px;display:flex;gap:8px;flex-wrap:wrap}
.pill{
  font-size:12px;color:var(--muted);
  border:1px solid var(--line);
  background:#fff;border-radius:999px;
  padding:6px 10px;
}

.btnRow{margin-top:12px;display:flex;gap:10px;flex-wrap:wrap}
.btn{
  text-decoration:none;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:14px;
  padding:10px 12px;
  border:1px solid var(--line);
  background:#fff;
  font-weight:700;
  font-size:14px;
}
.btn.primary{
  border-color:transparent;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  color:#fff;
}
.btn:hover{transform: translateY(-1px)}
.btn:active{transform: translateY(0px)}

footer.site{
  border-top:1px solid var(--line);
  margin-top:24px;
  background:rgba(255,255,255,.65);
}
.footerInner{
  display:flex;gap:12px;flex-wrap:wrap;
  align-items:center;justify-content:space-between;
  padding:16px 18px;color:var(--muted);font-size:13px;
}

.appWrap{
  padding:12px 18px 18px;
}
.appFrame{
  width:100%;
  height: calc(100vh - 150px);
  border:1px solid var(--line);
  border-radius:18px;
  background:#fff;
  box-shadow: var(--shadow);
}
.note{
  color:var(--muted);
  font-size:13px;
  line-height:1.8;
  margin-top:10px;
}

@media (max-width: 980px){
  .grid{grid-template-columns: 1fr 1fr}
}
@media (max-width: 680px){
  .grid{grid-template-columns: 1fr}
  .mobileBtn{display:inline-flex}
  .navlinks{display:none;width:100%}
  .navlinks.open{display:flex}
  .navbar{flex-wrap:wrap}
}