/* A01 共用视觉 — 落地页/经营页引用。深海军 + 青，细网格与玻璃，不依赖外链字体。 */
:root {
  --bg: #070b14;
  --bg2: #0c1220;
  --card: #10182a;
  --card2: #152036;
  --line: #243049;
  --line2: #31405c;
  --text: #eef3fb;
  --muted: #8b97b3;
  --faint: #7a88a6;
  --cyan: #5fe3d3;
  --cyan2: #3cc7dd;
  --cyan-dim: rgba(95, 227, 211, .12);
  --green: #5bd39a;
  --amber: #f2c06b;
  --red: #f07a7a;
  --purple: #a78bfa;
  --ink: #071018;
  --shadow: 0 18px 50px rgba(0, 0, 0, .45);
  --glass: rgba(10, 16, 28, .72);
  --font: "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); }
body {
  min-height: 100%;
  background:
    radial-gradient(900px 420px at 8% -10%, rgba(63, 201, 214, .28), transparent 58%),
    radial-gradient(720px 360px at 96% 0%, rgba(138, 120, 255, .18), transparent 52%),
    radial-gradient(700px 500px at 50% 120%, rgba(63, 201, 214, .07), transparent 60%),
    linear-gradient(180deg, #070b14 0%, #0a101c 100%);
  background-attachment: fixed;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .22;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 20%, transparent 75%);
}
.mark {
  width: 30px; height: 30px; border-radius: 9px; flex: none;
  display: grid; place-items: center;
  background: linear-gradient(145deg, var(--cyan), #2aa8c8 70%);
  color: var(--ink); font-size: 11px; font-weight: 800; letter-spacing: -.3px;
  box-shadow: 0 0 0 1px rgba(95,227,211,.25), 0 8px 20px rgba(60,199,221,.22);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 11px; padding: 10px 16px; font-size: 14px; font-weight: 600;
  text-decoration: none !important; border: 1px solid transparent; cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease;
}
.btn.pri {
  background: linear-gradient(135deg, var(--cyan), var(--cyan2));
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(60, 199, 221, .22);
}
.btn.pri:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(60, 199, 221, .3); }
.btn.ghost {
  border-color: var(--line2); color: var(--text);
  background: rgba(255,255,255,.03);
}
.btn.ghost:hover { border-color: var(--cyan2); background: var(--cyan-dim); }
.btn:focus-visible,
a:focus-visible,
input:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.card {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,.035), transparent 42%), linear-gradient(180deg, var(--card2), var(--card));
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.04);
}
.mono { font-family: var(--mono); font-size: 12.5px; }
.muted { color: var(--muted); }
.c { color: var(--cyan); } .g { color: var(--green); } .a { color: var(--amber); } .r { color: var(--red); } .p { color: var(--purple); }

.site-top, .site-wrap, .site-foot { position: relative; z-index: 1; }
.site-top {
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  padding: 14px 28px;
  border-bottom: 1px solid rgba(36, 48, 73, .8);
  background: var(--glass);
  backdrop-filter: blur(16px) saturate(1.2);
  position: sticky; top: 0; z-index: 8;
}
.site-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .2px; color: var(--text); text-decoration: none !important; }
.site-brand .name, .btn { white-space: nowrap; }
.nowrap { white-space: nowrap; }
.site-brand .name { display: flex; align-items: center; gap: 8px; }
.site-brand em {
  font-style: normal; color: var(--cyan); font-weight: 600; font-size: 10px; letter-spacing: .8px;
  border: 1px solid rgba(95,227,211,.28); background: var(--cyan-dim);
  border-radius: 999px; padding: 1px 7px;
}
.site-nav { display: flex; gap: 22px; font-size: 14px; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover, .site-nav a.on { color: var(--text); }
.site-sp { flex: 1; }
.site-wrap { max-width: 1160px; margin: 0 auto; padding: 36px 28px 20px; }
.site-wrap h1 { font-size: 34px; letter-spacing: -.5px; margin: 0 0 10px; text-wrap: balance; }
.site-wrap .lead { color: var(--muted); margin: 0 0 26px; max-width: 640px; }
.site-foot {
  border-top: 1px solid var(--line);
  color: var(--faint); font-size: 12px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  max-width: 1160px; margin: 36px auto 0; padding: 22px 28px 36px;
}
.site-foot a { color: var(--muted); }
@media (max-width: 720px) {
  .site-brand em,
  .site-top .btn.ghost { display: none; }
  .site-nav {
    display: flex; order: 3; width: 100%; overflow-x: auto;
    gap: 16px; padding-top: 8px; flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }
  .site-top, .site-wrap, .site-foot { padding-left: 16px; padding-right: 16px; }
  .site-wrap h1 { font-size: 32px; }
}