:root{--bg:#F6F7FB;--surface:#fff;--ink:#171A2E;--ink2:#3C4060;--muted:#8A8EA8;--line:#E6E8F2;--acc:#5B4DFF;--acc-ink:#4A3DE6;--acc-soft:#ECEAFF;--lime:#C8FF4D;--lime-soft:#F1FFCC}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--acc-ink);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%}
.display{font-weight:900;letter-spacing:.01em;line-height:1.1}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:900;font-size:22px}
.brand img{width:34px;height:34px;border-radius:9px}
.brand small{font-size:11px;letter-spacing:.18em;color:var(--muted);font-weight:500;margin-top:4px}
.nav-links{display:flex;gap:26px;font-size:15px;font-weight:500}
.nav-links a{color:var(--ink2)}.nav-links a.on{color:var(--acc-ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:999px;font-weight:700;font-size:15px;white-space:nowrap;border:0;cursor:pointer}
.btn-primary{background:var(--acc);color:#fff}.btn-primary:hover{background:var(--acc-ink);text-decoration:none;color:#fff}
.btn-ghost{background:var(--surface);color:var(--acc);border:1.5px solid var(--acc)}.btn-ghost:hover{text-decoration:none}
.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{text-decoration:none;color:#fff}
.btn-lime{background:var(--lime);color:var(--ink)}.btn-lime:hover{text-decoration:none}
.btn-lg{height:54px;padding:0 28px;font-size:16px}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:48px 0 32px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--acc-ink);letter-spacing:.06em}
h1.display{font-size:clamp(40px,6.5vw,76px);margin:14px 0 18px;text-wrap:balance}
.lead{font-size:19px;color:var(--ink2);max-width:520px;margin:0 0 26px}
.cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.stats{display:flex;gap:28px;margin-top:26px;font-variant-numeric:tabular-nums;flex-wrap:wrap}
.stats b{display:block;font-size:30px}.stats span{font-size:12px;color:var(--muted)}
.hero-art{position:relative;display:flex;justify-content:center;align-items:flex-end;min-height:420px}
.hero-art img{height:560px;display:block}
.float-card{position:absolute;left:0;bottom:70px;width:290px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px;box-shadow:0 24px 50px -24px rgba(23,26,46,.4)}
.tag{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:6px;font-size:11px;font-weight:700;background:var(--acc-soft);color:var(--acc)}
.tag.line{background:var(--surface);border:1px solid var(--line);color:var(--ink2)}.tag.lime{background:var(--lime);color:var(--ink)}.tag.dark{background:var(--ink);color:#fff}
.section{padding:56px 0 0}
h2.display{font-size:clamp(28px,4vw,40px);margin:0 0 20px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px}
.card h3{font-size:24px;margin:10px 0 8px;font-weight:900}
.card p{margin:0;color:var(--ink2);font-size:15px}
.step b{display:block;font-size:18px;margin:8px 0 4px}.step .n{width:36px;height:36px;border-radius:50%;background:var(--acc);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}
.step p{color:var(--ink2);font-size:14px;margin:0}
.band{margin-top:64px;background:var(--ink);color:#fff;border-radius:28px;padding:48px;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.band h2{color:#fff;font-size:clamp(32px,4vw,52px)}.band p{color:#C9CCE0;font-size:16px}
.band .cell{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:18px}
.band .cell b{color:var(--lime);display:block;margin-bottom:4px}.band .cell span{color:#C9CCE0;font-size:13px}
.safe{display:flex;gap:12px}.safe i{width:40px;height:40px;border-radius:12px;background:var(--acc-soft);display:flex;align-items:center;justify-content:center;flex:none;color:var(--acc)}
.safe b{display:block;font-size:16px}.safe span{font-size:13px;color:var(--ink2)}
.footer{margin-top:72px;border-top:1px solid var(--line);padding:32px 0 40px;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.footer .links{display:flex;gap:22px;flex-wrap:wrap}.footer a{color:var(--muted)}
.prose{max-width:760px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:32px 36px;margin:24px 0}
.prose h1{font-size:28px}.prose h2{font-size:20px;margin-top:28px}.prose h3{font-size:16px}.prose table{border-collapse:collapse;width:100%;font-size:14px}.prose td,.prose th{border:1px solid var(--line);padding:6px 10px;text-align:left}.prose code{background:var(--bg);padding:1px 5px;border-radius:4px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}.faq summary{font-weight:700;cursor:pointer}
/* 邀请页 */
.invite{max-width:420px;margin:0 auto;padding:16px 20px 40px}
.wxtip{background:var(--ink);color:#fff;font-size:12px;padding:10px 14px;border-radius:10px;display:none;justify-content:space-between;align-items:center;margin-bottom:14px}
.invite .who{display:flex;align-items:center;gap:12px;margin:18px 0}
.invite .who .av{width:44px;height:44px;border-radius:50%;background:var(--acc-soft);object-fit:cover}
.invite h1{font-size:26px;margin:0;font-weight:900}
.team-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:0 16px 40px -24px rgba(23,26,46,.35)}
.team-card .t{font-size:17px;font-weight:700;margin:10px 0 4px}.team-card .m{font-size:12px;color:var(--muted)}
.avs{display:flex}.avs i{width:32px;height:32px;border-radius:50%;background:#DCD9FF;border:2px solid #fff;margin-left:-8px}.avs i:first-child{margin-left:0}.avs i.empty{background:transparent;border:2px dashed #C4C8DD}.avs i.coach{background:var(--lime)}
.steps3{display:flex;justify-content:space-between;margin-top:22px;text-align:center;font-size:11px;color:var(--ink2)}.steps3 i{display:flex;width:40px;height:40px;border-radius:12px;background:var(--acc-soft);margin:0 auto 6px;align-items:center;justify-content:center;color:var(--acc)}
@media (max-width:900px){.hero{grid-template-columns:1fr}.hero-art{min-height:0}.hero-art img{height:380px}.float-card{display:none}.grid3,.grid4{grid-template-columns:1fr}.band{grid-template-columns:1fr;padding:28px}.nav-links{display:none}.display{line-height:1.15}}