/* Mouse Sprite landing — shared styles (en + zh) */
:root {
  --bg: #0b1020;
  --bg-soft: #121a33;
  --card: #16203f;
  --ink: #eaf0ff;
  --ink-soft: #aab6d8;
  --brand: #7c9bff;
  --brand-2: #57e0c0;
  --line: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --maxw: 1080px;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 80% -10%, #1b294f 0%, var(--bg) 60%);
  color: var(--ink);
  font-family: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont,
    "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* Header */
header.site {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11, 16, 32, 0.7);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--ink); }
.brand .logo { font-size: 24px; }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--ink-soft); font-size: 15px; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.lang-switch { font-size: 14px; color: var(--ink-soft); border: 1px solid var(--line); padding: 4px 10px; border-radius: 999px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--brand), #5b78ff);
  color: #0a0f1f; font-weight: 700; font-size: 15px;
  padding: 11px 18px; border-radius: 999px; border: 0; cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
  box-shadow: 0 8px 24px rgba(91, 120, 255, 0.35);
}
.btn:hover { transform: translateY(-1px); text-decoration: none; box-shadow: 0 12px 30px rgba(91,120,255,.45); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); box-shadow: none; }

/* Hero */
.hero { padding: 72px 0 48px; text-align: center; }
.badge {
  display: inline-block; font-size: 13px; color: var(--brand-2);
  border: 1px solid rgba(87,224,192,.3); background: rgba(87,224,192,.08);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(32px, 5vw, 54px); line-height: 1.1; margin: 0 0 18px; letter-spacing: -0.02em; }
.hero h1 .grad { background: linear-gradient(120deg, var(--brand), var(--brand-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: clamp(16px, 2.2vw, 20px); color: var(--ink-soft); max-width: 720px; margin: 0 auto 30px; }
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.subnote { margin-top: 16px; font-size: 13px; color: var(--ink-soft); }

/* Sections */
section { padding: 56px 0; }
section h2 { font-size: clamp(24px, 3.5vw, 34px); margin: 0 0 12px; letter-spacing: -0.01em; }
section .sec-lead { color: var(--ink-soft); max-width: 680px; margin: 0 0 36px; font-size: 17px; }

/* Feature grid */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 820px) { .grid { grid-template-columns: 1fr; } }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: rgba(124,155,255,.4); transform: translateY(-2px); }
.card .ico { font-size: 28px; margin-bottom: 12px; }
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--ink-soft); font-size: 15px; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
@media (max-width: 820px) { .steps { grid-template-columns: 1fr 1fr; } }
.step { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; position: relative; }
.step .n { width: 30px; height: 30px; border-radius: 50%; background: var(--brand); color: #0a0f1f; font-weight: 800; display: grid; place-items: center; margin-bottom: 12px; }
.step h3 { margin: 0 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--ink-soft); font-size: 14px; }

/* Comparison table */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 560px; }
th, td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); font-size: 15px; }
thead th { background: var(--bg-soft); color: var(--ink); font-weight: 700; }
tbody td:first-child { color: var(--ink-soft); }
.yes { color: var(--brand-2); font-weight: 700; }
.no { color: #ff8095; }

/* FAQ */
.faq details {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 4px 18px; margin-bottom: 12px;
}
.faq summary { cursor: pointer; padding: 14px 0; font-weight: 600; font-size: 16px; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--brand); font-size: 20px; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 16px; color: var(--ink-soft); font-size: 15px; }

/* CTA band */
.cta-band { text-align: center; background: linear-gradient(135deg, #16224a, #122a44); border: 1px solid var(--line); border-radius: 24px; padding: 48px 24px; }
.cta-band h2 { margin-top: 0; }

/* Footer */
footer.site { border-top: 1px solid var(--line); padding: 32px 0; color: var(--ink-soft); font-size: 14px; }
.foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.foot a { color: var(--ink-soft); }

.tldr { background: rgba(124,155,255,.08); border-left: 3px solid var(--brand); padding: 14px 18px; border-radius: 8px; color: var(--ink-soft); font-size: 15px; margin: 0 0 28px; }