:root {
  --yellow: #F9C40F;
  --purple: #A98CE6;
  --ink: #2A2540;
  --muted: #6B6580;
  --bg: #FBFAFF;
  --card: #FFFFFF;
  --line: #ECE8F5;
  --radius: 18px;
  --maxw: 1040px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
}
a { color: var(--purple); 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: 10;
  background: rgba(255,255,255,0.9); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand .m { height: 38px; width: auto; display: block; }
.brand .c { height: 22px; width: auto; display: block; }
.brand .mark {
  width: 40px; height: 40px; border-radius: 11px;
  display: grid; place-items: center; font-weight: 900; font-size: 17px;
  background: linear-gradient(135deg, var(--yellow) 0 50%, var(--purple) 50% 100%);
  color: #fff; letter-spacing: -1px;
}
.brand .bt { font-weight: 800; }
.brand .bt small { display: block; font-weight: 600; font-size: 11px; color: var(--muted); letter-spacing: 3px; }
nav.links a { color: var(--ink); font-weight: 600; margin-left: 22px; font-size: 15px; }
nav.links a:hover { color: var(--purple); text-decoration: none; }
@media (max-width: 720px) { nav.links a { margin-left: 14px; font-size: 13px; } .brand .bt { font-size: 15px; } }

/* Hero */
.hero { padding: 70px 0 54px; text-align: center; }
.hero h1 { font-size: 40px; line-height: 1.25; margin: 0 0 16px; }
.hero h1 .g { background: linear-gradient(120deg, var(--yellow), #ef8fb4, var(--purple)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { font-size: 18px; color: var(--muted); max-width: 620px; margin: 0 auto; }
@media (max-width: 720px) { .hero h1 { font-size: 30px; } .hero p { font-size: 16px; } }

/* Sections */
section.block { padding: 48px 0; }
section.block h2 { font-size: 26px; margin: 0 0 8px; }
section.block .lead { color: var(--muted); margin: 0 0 28px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 860px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .grid { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card .step { font-weight: 900; color: var(--purple); font-size: 13px; }
.card h3 { margin: 8px 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

/* Pricing */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 720px) { .tiers { grid-template-columns: 1fr; } }
.tier { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.tier .name { font-weight: 800; }
.tier .price { font-size: 30px; font-weight: 900; margin: 10px 0; }
.tier .price small { font-size: 14px; color: var(--muted); font-weight: 600; }
.tier ul { margin: 8px 0 0; padding-left: 18px; color: var(--muted); font-size: 14px; }
.note { font-size: 13px; color: var(--muted); margin-top: 16px; }

/* Legal pages */
.legal { padding: 40px 0 20px; }
.legal h1 { font-size: 28px; }
.legal h2 { font-size: 19px; margin-top: 28px; }
.legal p, .legal li { color: #3d3757; }
.legal .updated { color: var(--muted); font-size: 14px; }

/* Contact */
.contact-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.contact-box dt { font-weight: 700; margin-top: 12px; }
.contact-box dd { margin: 2px 0 0; color: var(--muted); }

/* Footer */
footer.site { border-top: 1px solid var(--line); background: #fff; margin-top: 40px; }
footer.site .wrap { padding: 28px 20px; font-size: 13px; color: var(--muted); }
footer.site .row { display: flex; flex-wrap: wrap; gap: 8px 22px; align-items: center; }
footer.site a { color: var(--muted); }
footer.site .cn { margin-top: 10px; font-weight: 700; color: var(--ink); }