:root{
  --bg:#0B0E11;--bg-2:#181A20;--card:#1E2329;--card-2:#23262D;--line:#2B3139;--line-2:#474D57;
  --ink:#EAECEF;--muted:#848E9C;--dim:#5E6673;
  --y:#FCD535;--y-2:#F0B90B;--y-dim:rgba(252,213,53,.14);--glow:rgba(252,213,53,.22);
  --glass:rgba(24,26,32,.7);--qr-shadow:rgba(252,213,53,.35);--grid-op:.5;
  --up:#0ECB81;--down:#F6465D;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --mono:"SF Mono","Menlo","Consolas","Courier New",monospace;
  --wrap:1120px;
}
html[data-theme="light"]{
  --bg:#FFFFFF;--bg-2:#FAFAFA;--card:#FFFFFF;--card-2:#FFF8DC;--line:#EAECEF;--line-2:#B7BDC6;
  --ink:#1E2329;--muted:#707A8A;--dim:#929AA5;
  --y:#F0B90B;--y-2:#D9A406;--y-dim:rgba(240,185,11,.16);--glow:rgba(252,213,53,.35);
  --glass:rgba(255,255,255,.75);--qr-shadow:rgba(30,35,41,.18);--grid-op:.9;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;color-scheme:dark}
html[data-theme="light"]{color-scheme:light}
html[data-theme="light"] .card{box-shadow:0 6px 24px -18px rgba(30,35,41,.25)}
html[data-theme="light"] .stats b{color:#D9A406}
html[data-theme="light"] .eyebrow{color:#D9A406}
html[data-theme="light"] .tick{background:#D9A406}
html[data-theme="light"] .card--accent .card__tag{color:#D9A406}
body{margin:0;background:var(--bg);color:var(--ink);transition:background .2s,color .2s;font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
h1,h2,h3{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.2}
p{margin:0}
.mark{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:6px;background:var(--y);color:#181A20;font-style:normal;font-weight:800;font-size:15px;margin-right:8px;vertical-align:-6px}
.eyebrow{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--y);text-transform:uppercase}
.tick{width:18px;height:2px;background:var(--y);border-radius:2px}

/* hero */
.hero{position:relative;padding:72px 0 56px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:var(--grid-op);
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(70% 70% at 30% 20%,#000 20%,transparent 75%);-webkit-mask-image:radial-gradient(70% 70% at 30% 20%,#000 20%,transparent 75%)}
.hero__glow{position:absolute;width:720px;height:720px;left:-180px;top:-320px;border-radius:50%;background:radial-gradient(closest-side,var(--glow),rgba(252,213,53,0));pointer-events:none;filter:blur(10px)}
.hero .wrap{position:relative;max-width:820px;margin:0 0 0 max(20px,calc((100% - var(--wrap))/2 + 20px));padding:0 20px 0 0}
.hero h1{font-size:clamp(32px,5.2vw,58px);margin:18px 0 18px}
.lede{color:var(--muted);font-size:17px;max-width:620px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 22px;border-radius:8px;font-weight:700;text-decoration:none;font-size:15px;transition:transform .12s,background .15s,border-color .15s;border:1px solid transparent}
.btn:active{transform:scale(.98)}
.btn--primary{background:var(--y);color:#181A20}
html[data-theme="light"] .btn--primary{background:#FCD535}
html[data-theme="light"] .btn--primary:hover{background:#F0B90B}
.btn--primary:hover{background:var(--y-2)}
.btn--ghost{border-color:var(--line-2);color:var(--ink);background:transparent}
.btn--ghost:hover{border-color:var(--y);color:var(--y)}
.stats{list-style:none;margin:40px 0 0;padding:0;display:flex;gap:0;border:1px solid var(--line);border-radius:12px;background:var(--glass);backdrop-filter:blur(6px);max-width:640px;overflow:hidden}
.stats li{flex:1;padding:14px 18px;border-right:1px solid var(--line);min-width:0}
.stats li:last-child{border-right:0}
.stats b{display:block;font-family:var(--mono);font-size:24px;font-weight:700;color:var(--y);line-height:1.1;font-variant-numeric:tabular-nums}
.stats b i{font-style:normal;font-size:15px;color:var(--y-2);margin-left:1px}
.stats span{display:block;font-size:12px;color:var(--muted);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* sites */
.sites{padding:56px 0 24px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.sec-head h2{font-size:24px}
.sec-head p{color:var(--muted);font-size:14px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card{display:block;position:relative;padding:22px 22px 24px;background:var(--card);border:1px solid var(--line);box-shadow:0 1px 0 rgba(0,0,0,.02);border-radius:14px;text-decoration:none;transition:border-color .15s,transform .15s,background .15s;overflow:hidden}
.card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--y);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.card:hover{border-color:var(--line-2);transform:translateY(-2px)}
.card:hover::after{transform:scaleX(1)}
.card:hover .card__arrow{transform:translateX(3px);color:var(--y)}
.card__top{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px}
.card__tag{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.04em}
.card__arrow{color:var(--muted);font-size:18px;transition:transform .15s,color .15s}
.card h3{font-size:20px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14px}
.card--accent{background:linear-gradient(160deg,var(--card-2),var(--card) 60%)}
.card--accent .card__tag{color:var(--y)}

/* wechat */
.wechat{padding:32px 0 72px}
.wechat__card{display:grid;grid-template-columns:300px 1fr;gap:36px;align-items:center;padding:30px;background:var(--bg-2);border:1px solid var(--line);border-radius:18px;position:relative;overflow:hidden}
.wechat__card::before{content:"";position:absolute;right:-120px;top:-120px;width:320px;height:320px;border-radius:50%;background:radial-gradient(closest-side,var(--y-dim),transparent);pointer-events:none}
.wechat__qr{margin:0;padding:14px;background:#fff;border-radius:14px;box-shadow:0 20px 50px -24px var(--qr-shadow)}
.wechat__qr img{display:block;width:100%;height:auto;border-radius:6px}
.wechat__meta h2{font-size:30px;margin:12px 0 4px}
.wechat__meta h2 small{font-size:16px;font-weight:500;color:var(--muted);margin-left:4px}
.wechat__loc{color:var(--muted);font-size:14px}
.wechat__tip{margin-top:16px;color:var(--ink);font-size:15px;max-width:460px}
.wechat__points{list-style:none;padding:0;margin:16px 0 0;display:flex;gap:10px;flex-wrap:wrap}
.wechat__points li{font-size:13px;color:var(--muted);padding:6px 10px;border:1px solid var(--line);border-radius:999px}
.wechat__points li::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--up);margin-right:7px;vertical-align:1px}

/* footer */
.foot{border-top:1px solid var(--line);padding:28px 0 40px;background:var(--bg-2)}
.foot .wrap{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.foot__brand{font-weight:800;display:flex;align-items:center}
.foot__links{display:flex;gap:4px;flex-wrap:wrap}
.foot__links a{color:var(--muted);text-decoration:none;font-size:14px;padding:6px 10px;border-radius:6px}
.foot__links a:hover{color:var(--ink);background:var(--line)}
.foot__copy{margin-left:auto;color:var(--dim);font-size:13px;font-family:var(--mono)}

/* motion */
.reveal{opacity:0;transform:translateY(12px);animation:rise .6s cubic-bezier(.2,.8,.2,1) forwards;animation-delay:calc(var(--i,0)*.07s)}
@keyframes rise{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.reveal{animation:none;opacity:1;transform:none}}

/* mobile */
@media (max-width:860px){
  .grid{grid-template-columns:1fr}
  .wechat__card{grid-template-columns:1fr;gap:22px;padding:22px}
  .wechat__qr{max-width:280px;margin:0 auto}
  .wechat__meta{text-align:center}
  .wechat__meta .eyebrow,.wechat__points{justify-content:center}
  .wechat__tip{margin-left:auto;margin-right:auto}
  .hero{padding:48px 0 40px}
  .hero .wrap{margin:0;padding:0 20px}
  .stats{max-width:none}
  .stats li{padding:12px 12px}
  .stats b{font-size:20px}
  .foot__copy{margin-left:0}
}
@media (max-width:420px){
  .stats{flex-direction:column}
  .stats li{border-right:0;border-bottom:1px solid var(--line);display:flex;align-items:baseline;justify-content:space-between}
  .stats li:last-child{border-bottom:0}
  .stats span{margin-top:0;white-space:normal}
  .cta .btn{flex:1}
}