* { box-sizing: border-box; margin: 0; padding: 0; }
:root { --p1:#8B5CF6; --p2:#EC4899; --a:#A855F7; --ink:#241a33; --bg:#F6F2FE; --bg2:#ECE3FB; --grad:linear-gradient(120deg,#8B5CF6,#EC4899); }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif; color: var(--ink); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 22px; }
/* nav */
.site-nav { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.86); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(0,0,0,.06); }
.nav-inner { max-width: 1140px; margin: 0 auto; padding: 13px 22px; display: flex; align-items: center; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--ink); }
.brand svg { width: 30px; height: 30px; }
.brand-logo { width: 32px; height: 32px; border-radius: 8px; display: block; flex: none; }
.brand i { font-style: normal; font-size: 11px; color: #fff; background: var(--p1); border-radius: 5px; padding: 1px 4px; margin-left: 3px; vertical-align: super; }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-link { padding: 8px 13px; border-radius: 9px; font-size: 15px; color: #555; font-weight: 500; }
.nav-link:hover { background: var(--bg2); color: var(--ink); }
.nav-link.is-active { background: var(--bg2); color: var(--p1); font-weight: 700; }
.nav-cta { background: var(--grad); color: #fff; padding: 9px 18px; border-radius: 10px; font-weight: 700; font-size: 14px; }
.nav-burger { display: none; background: none; border: 0; font-size: 26px; margin-left: auto; color: var(--ink); }
/* hero */
.hero { background: radial-gradient(1200px 500px at 80% -10%, var(--bg2), transparent), var(--bg); padding: 64px 0 52px; }
.hero-inner { max-width: 1140px; margin: 0 auto; padding: 0 22px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.badge { display: inline-block; background: var(--bg2); color: var(--p1); font-weight: 700; font-size: 13px; padding: 6px 13px; border-radius: 999px; margin-bottom: 18px; }
.hero h1 { font-size: 42px; line-height: 1.18; letter-spacing: -.5px; }
.hero h1 .reg { font-style: normal; font-size: 16px; color: #fff; background: var(--p1); border-radius: 6px; padding: 2px 6px; vertical-align: super; margin-left: 4px; }
.lede { margin: 18px 0 26px; font-size: 17px; color: #5a5550; max-width: 520px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 11px; font-weight: 700; font-size: 15px; transition: transform .15s, box-shadow .15s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 24px -10px var(--p1); }
.btn-ghost { background: #fff; color: var(--ink); border: 1px solid rgba(0,0,0,.1); }
.btn-light { background: #fff; color: var(--p1); }
.btn.block { display: block; text-align: center; margin-top: 14px; }
.hero-media img { border-radius: 18px; box-shadow: 0 30px 60px -28px rgba(0,0,0,.4); width: 100%; }
/* sections */
.sec { padding: 56px 0; }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 34px; }
.sec-head h2 { font-size: 30px; letter-spacing: -.4px; }
.sec-head p { color: #6b6660; margin-top: 10px; font-size: 16px; }
/* grid cards */
.grid { display: grid; gap: 18px; }
.cols-2 { grid-template-columns: repeat(2,1fr); } .cols-3 { grid-template-columns: repeat(3,1fr); } .cols-4 { grid-template-columns: repeat(4,1fr); }
.card { background: #fff; border: 1px solid rgba(0,0,0,.06); border-radius: 16px; padding: 24px; transition: transform .18s, box-shadow .18s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 22px 44px -24px rgba(0,0,0,.3); }
.card-ico { width: 46px; height: 46px; border-radius: 12px; background: var(--bg2); color: var(--p1); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 20px; margin-bottom: 14px; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { color: #6b6660; font-size: 14.5px; }
.card-link { display: block; }
.card-link .more { display: inline-block; margin-top: 12px; color: var(--p1); font-weight: 700; font-size: 14px; }
/* feature rows */
.frows { display: grid; gap: 20px; }
.frow { display: grid; grid-template-columns: 1fr 280px; gap: 26px; align-items: center; background: #fff; border: 1px solid rgba(0,0,0,.06); border-radius: 16px; padding: 22px; }
.frow:nth-child(even) .row-media { order: -1; }
.row-body h3 { font-size: 19px; margin-bottom: 8px; }
.row-body p { color: #6b6660; }
.row-media img { border-radius: 12px; width: 100%; height: 180px; object-fit: cover; }
/* timeline */
.timeline { display: grid; gap: 0; }
.tstep { display: grid; grid-template-columns: 56px 1fr; gap: 18px; padding-bottom: 26px; position: relative; }
.tstep:not(:last-child)::before { content: ""; position: absolute; left: 27px; top: 50px; bottom: 0; width: 2px; background: var(--bg2); }
.tnum { width: 54px; height: 54px; border-radius: 50%; background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 20px; z-index: 1; }
.tbody h3 { font-size: 18px; }
.tbody p { color: #6b6660; font-size: 14.5px; }
/* pricing */
.tiers { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; align-items: stretch; }
.tier { background: #fff; border: 1px solid rgba(0,0,0,.08); border-radius: 18px; padding: 26px; display: flex; flex-direction: column; }
.tier.hot { border: 2px solid var(--p1); box-shadow: 0 24px 50px -26px var(--p1); position: relative; }
.tier.hot::after { content: "推荐"; position: absolute; top: -12px; left: 26px; background: var(--p1); color: #fff; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.tier-head h3 { font-size: 20px; } .price { font-size: 32px; font-weight: 800; margin: 8px 0; color: var(--p1); } .price span { font-size: 14px; color: #999; font-weight: 500; }
.tier-head p { color: #6b6660; font-size: 14px; }
.tier-feats { list-style: none; margin: 16px 0; flex: 1; }
.tier-feats li { padding: 7px 0 7px 24px; position: relative; font-size: 14.5px; color: #444; }
.tier-feats li::before { content: "✓"; position: absolute; left: 0; color: var(--p1); font-weight: 800; }
/* stats */
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin: 8px 0 4px; }
.stat { background: #fff; border: 1px solid rgba(0,0,0,.06); border-radius: 14px; padding: 22px; text-align: center; }
.stat b { display: block; font-size: 30px; color: var(--p1); font-weight: 800; }
.stat span { color: #6b6660; font-size: 14px; }
/* band */
.band { background: var(--grad); color: #fff; margin: 20px 0; }
.band-inner { max-width: 1140px; margin: 0 auto; padding: 40px 22px; display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.band h2 { font-size: 26px; } .band p { opacity: .92; margin-top: 6px; max-width: 620px; }
.band .btn-light { margin-left: auto; }
/* page header */
.phead { background: radial-gradient(900px 400px at 85% -20%, var(--bg2), transparent), var(--bg); padding: 46px 0 30px; border-bottom: 1px solid rgba(0,0,0,.05); }
.phead .crumb { font-size: 13px; color: #999; margin-bottom: 12px; } .phead .crumb a:hover { color: var(--p1); }
.phead h1 { font-size: 34px; letter-spacing: -.4px; } .phead h1 .reg { font-style: normal; font-size: 14px; color: #fff; background: var(--p1); border-radius: 6px; padding: 2px 6px; vertical-align: super; margin-left: 4px; }
.phead p { color: #6b6660; margin-top: 12px; font-size: 16px; max-width: 680px; }
/* prose */
.prose p { margin-bottom: 14px; color: #555; }
.prose h3 { margin: 22px 0 8px; font-size: 20px; }
/* footer */
.site-foot { background: #1c1b1a; color: #cfc9c2; padding: 46px 0 26px; margin-top: 30px; }
.foot-inner { max-width: 1140px; margin: 0 auto; padding: 0 22px; display: grid; grid-template-columns: 1.4fr repeat(3,1fr); gap: 26px; }
.foot-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 18px; margin-bottom: 12px; }
.foot-brand svg { width: 28px; height: 28px; }
.foot-brand .brand-logo { width: 30px; height: 30px; border-radius: 7px; flex: none; }
.foot-col h4 { color: #fff; font-size: 15px; margin-bottom: 12px; }
.foot-col a { display: block; color: #b3ada6; padding: 5px 0; font-size: 14px; }
.foot-col a:hover { color: #fff; }
.foot-bot { max-width: 1140px; margin: 26px auto 0; padding: 18px 22px 0; border-top: 1px solid rgba(255,255,255,.1); font-size: 13px; color: #8e887f; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.foot-bot i { font-style: normal; color: #fff; background: rgba(255,255,255,.12); border-radius: 4px; padding: 0 4px; }
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; } .hero h1 { font-size: 32px; }
  .nav-links { display: none; } .nav-burger { display: block; }
  .nav-links.open { display: flex; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; background: #fff; padding: 12px; border-bottom: 1px solid rgba(0,0,0,.08); }
  .cols-3, .cols-4, .tiers { grid-template-columns: 1fr; } .cols-2 { grid-template-columns: 1fr; }
  .frow { grid-template-columns: 1fr; } .frow:nth-child(even) .row-media { order: 0; }
  .stats { grid-template-columns: repeat(2,1fr); }
  .foot-inner { grid-template-columns: 1fr 1fr; } .band .btn-light { margin-left: 0; }
}