/* Pinmai pages: internet tech-company style (distinct from answer pages).
   Dark premium + neon accents, section-heavy landing style. No external assets. */

:root{
  --bg0:#070A12;
  --bg1:#0B1020;
  --surface: rgba(255,255,255,.06);
  --surface2: rgba(255,255,255,.09);
  --border: rgba(255,255,255,.10);
  --text:#EAF0FF;
  --muted: rgba(234,240,255,.72);
  --muted2: rgba(234,240,255,.55);
  --brand:#FE2C55;
  --brand2:#FF6B8A;
  --blue:#3B82F6;
  --cyan:#22D3EE;
  --green:#22C55E;
  --yellow:#F59E0B;
  --shadow: 0 22px 70px rgba(0,0,0,.55);
  --shadow2: 0 14px 34px rgba(0,0,0,.40);
  --radius: 18px;
  --radius2: 22px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(1200px 600px at 12% 0%, rgba(254,44,85,.26), transparent 60%),
    radial-gradient(900px 500px at 82% 12%, rgba(34,211,238,.22), transparent 55%),
    radial-gradient(900px 600px at 50% 110%, rgba(59,130,246,.18), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
}

a{color:inherit;text-decoration:none}

.wrap{max-width:1160px;margin:0 auto;padding:28px 18px 84px}

/* Top navigation */
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 16px;border:1px solid var(--border);border-radius:20px;
  background: rgba(10,14,28,.65);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow2);
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.logo{
  width:38px;height:38px;border-radius:14px;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  box-shadow: 0 16px 50px rgba(254,44,85,.25);
}
.brand-text{min-width:0}
.brand-title{font-weight:900;letter-spacing:.2px;white-space:nowrap}
.brand-sub{margin-top:2px;font-size:12px;color:var(--muted2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.nav-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.pill{
  font-size:12px;color:var(--muted);
  padding:7px 10px;border:1px solid var(--border);border-radius:999px;
  background: rgba(255,255,255,.05);
}
/* Backward-compatible alias (older pages used .chip) */
.chip{ 
  font-size:12px;color:var(--muted);
  padding:7px 10px;border:1px solid var(--border);border-radius:999px;
  background: rgba(255,255,255,.05);
}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:14px;border:1px solid var(--border);
  background: rgba(255,255,255,.06);
  box-shadow: 0 10px 26px rgba(0,0,0,.35);
  font-weight:800;font-size:13px;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease;
}
.btn:hover{transform: translateY(-1px); border-color: rgba(255,255,255,.18); background: rgba(255,255,255,.08)}
.btn-primary{
  border-color: rgba(254,44,85,.30);
  background: linear-gradient(135deg, rgba(254,44,85,.18), rgba(255,107,138,.10));
}
.btn-ghost{background: transparent; box-shadow:none}

/* Hero */
.hero{
  margin-top:18px;
  border:1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.04));
  border-radius: 26px;
  padding: 28px 22px 22px;
  box-shadow: var(--shadow);
  position:relative;
  overflow:hidden;
}
.hero:before{
  content:"";
  position:absolute;inset:-2px;
  background:
    radial-gradient(600px 220px at 20% 0%, rgba(254,44,85,.22), transparent 60%),
    radial-gradient(520px 240px at 84% 14%, rgba(34,211,238,.18), transparent 60%),
    radial-gradient(420px 180px at 62% 90%, rgba(59,130,246,.16), transparent 60%);
  pointer-events:none;
}
.hero > *{position:relative}
.kicker{font-size:12px;letter-spacing:.45px;text-transform:uppercase;color:var(--muted2)}
.h1{margin:10px 0 0;font-size:34px;line-height:1.12;letter-spacing:.2px}
.lead{margin:12px 0 0;max-width: 88ch;color:var(--muted);line-height:1.85}
.hero-cta{margin-top:16px;display:flex;gap:10px;flex-wrap:wrap}

/* Sections */
.section{margin-top:16px}
.section-title{
  display:flex;align-items:flex-end;justify-content:space-between;gap:12px;
  margin: 0 0 12px;
}
.section-title h2{margin:0;font-size:16px;letter-spacing:.2px}
.section-title p{margin:0;color:var(--muted2);font-size:12px}

.grid{
  display:grid;
  grid-template-columns: 1.35fr .65fr;
  gap:14px;
}
@media (max-width: 980px){
  .grid{grid-template-columns:1fr}
}

.card{
  border:1px solid var(--border);
  background: rgba(255,255,255,.06);
  border-radius: var(--radius2);
  padding:16px;
  box-shadow: var(--shadow2);
}
.card h3{margin:0 0 10px;font-size:14px;letter-spacing:.2px}
.p{margin:10px 0;line-height:1.9;color:var(--text)}
.muted{color:var(--muted)}
.muted2{color:var(--muted2)}

.list{margin:0;padding-left:18px;line-height:2.0}
.list li{margin:6px 0;color:var(--muted)}
.list strong{color:var(--text)}

/* Feature tiles */
.tiles{
  display:grid;grid-template-columns: repeat(3, 1fr);gap:12px;
}
@media (max-width: 900px){ .tiles{grid-template-columns:1fr} }
.tile{
  border:1px solid var(--border);
  border-radius: 18px;
  padding:14px;
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.04));
}
.tile .t{font-size:12px;color:var(--muted2)}
.tile .v{margin-top:8px;font-size:16px;font-weight:900;letter-spacing:.2px}
.tile .d{margin-top:8px;font-size:12px;color:var(--muted);line-height:1.7}

/* Right rail visualization */
.viz{
  border:1px solid var(--border);
  border-radius: 22px;
  background: rgba(255,255,255,.05);
  padding:14px;
}
.viz-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.tag{
  font-size:12px;color:var(--muted);
  padding:6px 10px;border:1px solid var(--border);border-radius:999px;background: rgba(255,255,255,.05)
}
.flow{display:grid;gap:10px}
.node{
  border:1px solid var(--border);
  border-radius: 18px;
  padding:12px;
  background: rgba(0,0,0,.12);
  position:relative;
}
.node:before{
  content:"";
  position:absolute;left:12px;top:14px;width:10px;height:10px;border-radius:999px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  box-shadow: 0 12px 28px rgba(34,211,238,.18);
}
.node .l{font-weight:950;font-size:13px;padding-left:18px}
.node .s{margin-top:6px;font-size:12px;color:var(--muted);line-height:1.65;padding-left:18px}

/* FAQ */
.faq{display:grid;gap:10px}
.qa{
  border:1px solid var(--border);
  border-radius: 18px;
  padding:12px;
  background: rgba(255,255,255,.05);
}
.q{font-weight:900}
.a{margin-top:8px;color:var(--muted);line-height:1.85}

/* Comparison / table */
.compare{
  width:100%;
  border-collapse: separate;
  border-spacing: 0;
  overflow:hidden;
  border-radius: 18px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
}
.compare th,.compare td{
  padding:10px 12px;
  border-bottom:1px solid rgba(255,255,255,.08);
  font-size:12px;
}
.compare th{color:var(--muted2);text-align:left;background: rgba(255,255,255,.04)}
.compare td{color:var(--muted)}
.compare tr:last-child td{border-bottom:none}

/* Footer */
.footer{
  margin-top:18px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;
  color:var(--muted2);font-size:12px;
}
.back{color: var(--cyan); font-weight:900}
.sep{opacity:.5}

code.inline{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  color: var(--text);
}