:root{
  --bg:#ffffff; --soft:#F5F6FB; --ink:#15161C; --ink-2:#565C6E; --ink-3:#8A90A2;
  --line:#ECEDF3; --brand:#5B4DF0; --brand-2:#8B5CF6; --brand-soft:#EEEDFE;
  --accent:#FF6A3D; --accent-soft:#FFEDE6; --teal:#0FB89A; --amber:#F5A623;
  --r:18px; --r-sm:12px; --maxw:1180px;
  --shadow:0 1px 2px rgba(20,22,40,.05), 0 18px 40px -20px rgba(31,28,90,.22);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{scroll-margin-top:80px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);padding:6px 14px;border-radius:999px;letter-spacing:.02em}
.h2{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.18;text-wrap:balance}
.lead{color:var(--ink-2);font-size:clamp(15px,2.2vw,18px);max-width:620px;text-wrap:balance}
.grad{background:linear-gradient(100deg,var(--brand),var(--brand-2) 60%,var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.ic{width:20px;height:20px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;display:block}
.tile{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;flex:none}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;padding:13px 22px;border-radius:999px;
  border:1.5px solid transparent;cursor:pointer;transition:.18s ease;white-space:nowrap}
.btn .ic{width:18px;height:18px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px -10px rgba(255,106,61,.7)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 16px 28px -10px rgba(255,106,61,.7)}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 10px 22px -10px rgba(91,77,240,.7)}
.btn-brand:hover{transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink-3);transform:translateY(-2px)}
.btn-lg{padding:15px 28px;font-size:16px}

/* nav */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.8);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:.2s}
header.nav.scrolled{border-color:var(--line);box-shadow:0 6px 20px -16px rgba(20,22,40,.4)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.01em}
.brand .mark{width:36px;height:36px;flex:none;font-size:0;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0' y1='1' x2='1' y2='0'%3E%3Cstop offset='0' stop-color='%235B4DF0'/%3E%3Cstop offset='1' stop-color='%239460EE'/%3E%3C/linearGradient%3E%3C/defs%3E%3Cpath d='M15 50 L32 15 L49 50' fill='none' stroke='url(%23g)' stroke-width='7.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M23 33 Q32 40 41 33' fill='none' stroke='url(%23g)' stroke-width='4' stroke-linecap='round'/%3E%3Ccircle cx='32' cy='15' r='6.5' fill='%23FF6A3D'/%3E%3C/svg%3E") center/contain no-repeat}
.nav-links{display:flex;align-items:center;gap:3px;background:var(--soft);padding:5px;border-radius:999px}
.nav-links a{font-size:14.5px;color:var(--ink-2);font-weight:500;padding:8px 16px;border-radius:999px;transition:.16s ease;white-space:nowrap}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{background:var(--brand);color:#fff}
.nav-links a.active:hover{color:#fff}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-right .btn{padding:7px 18px;font-size:14.5px}
.nav-toggle{display:none;background:none;border:none;color:var(--ink);cursor:pointer;padding:6px}
.nav-toggle .ic{width:26px;height:26px}
.m-menu{display:none}

/* hero */
.hero{position:relative;overflow:hidden;padding:72px 0 64px;text-align:center;
  background:
    radial-gradient(60% 50% at 50% -8%, rgba(139,92,246,.16), transparent 70%),
    radial-gradient(40% 40% at 85% 10%, rgba(255,106,61,.12), transparent 70%),
    radial-gradient(40% 45% at 12% 18%, rgba(91,77,240,.10), transparent 70%);}
.hero h1{font-size:clamp(32px,6.2vw,60px);font-weight:800;letter-spacing:-.03em;line-height:1.1;margin-bottom:22px}
.hero .lead{margin:0 auto 30px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:880px;margin:54px auto 0}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 16px;text-align:left;
  display:flex;gap:13px;align-items:flex-start;box-shadow:var(--shadow)}
.stat .tile{width:42px;height:42px;font-size:21px;border-radius:11px}
.stat b{display:block;font-size:17px;font-weight:700;letter-spacing:-.01em}
.stat span{font-size:13px;color:var(--ink-3)}

/* generic section */
.sec{padding:92px 0}
.sec.soft{background:var(--soft)}
.sec-head{max-width:680px;margin:0 auto 50px;text-align:center}
.sec-head .h2{margin:16px 0 14px}
.sec-head .lead{margin:0 auto}

/* two-pillars */
.pillars{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.pillar{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.pillar:before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.pillar.b:before{background:linear-gradient(90deg,var(--accent),var(--amber))}
.pillar h3{font-size:23px;font-weight:800;margin:18px 0 10px;letter-spacing:-.01em}
.pillar p{color:var(--ink-2);font-size:15.5px}
.pillar ul{list-style:none;margin-top:18px;display:flex;flex-direction:column;gap:10px}
.pillar li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2)}
.pillar li .ic{color:var(--brand);margin-top:3px;flex:none}
.pillar.b li .ic{color:var(--accent)}

/* product / showcase cards */
.cards{display:flex;gap:20px;overflow-x:auto;overflow-y:visible;scroll-snap-type:x proximity;padding:8px 2px 16px}
.cards>*{flex:0 0 300px;scroll-snap-align:start}
.cards::-webkit-scrollbar{height:8px}
.cards::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow);
  transition:.2s ease;display:flex;flex-direction:column;color:inherit;text-decoration:none}
a.pcard{cursor:pointer}
.pcard:hover{transform:translateY(-6px);box-shadow:0 1px 2px rgba(20,22,40,.05),0 30px 50px -22px rgba(31,28,90,.32)}
.cover{height:178px;position:relative;display:flex;align-items:flex-end;padding:20px;overflow:hidden}
.cover .emoji{position:absolute;right:14px;top:8px;font-size:74px;opacity:.9;filter:drop-shadow(0 6px 10px rgba(0,0,0,.12))}
.cover .ct{position:relative;z-index:2;font-size:26px;font-weight:800;color:#fff;letter-spacing:.01em;text-shadow:0 2px 10px rgba(0,0,0,.18)}
.cover .corner{position:absolute;left:18px;top:16px;z-index:3}
.cv1{background:linear-gradient(135deg,#5B4DF0,#8B5CF6)}
.cv2{background:linear-gradient(135deg,#FF6A3D,#F5A623)}
.cover.soft1{background:linear-gradient(135deg,#EFEEFD,#E5E0FB)}
.cover.soft2{background:linear-gradient(135deg,#E4F5F0,#D5EFE6)}
.cover.soft3{background:linear-gradient(135deg,#FBF1DD,#F6E4C4)}
.cover.soft1 .ct{color:#463BC9;text-shadow:none}
.cover.soft2 .ct{color:#0B7D68;text-shadow:none}
.cover.soft3 .ct{color:#A8730B;text-shadow:none}
.pbody{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.tags{display:flex;gap:8px;flex-wrap:wrap}
.tag{font-size:12px;font-weight:600;padding:4px 11px;border-radius:999px;background:var(--brand-soft);color:var(--brand)}
.tag.warm{background:var(--accent-soft);color:#D8410F}
.pbody h3{font-size:20px;font-weight:800;letter-spacing:-.01em}
.pbody p{color:var(--ink-2);font-size:14.5px;flex:1}
.meta{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px;margin-top:4px}
.meta .who{font-size:13px;color:var(--ink-3)}
.meta .comm{font-size:13px;font-weight:700;color:var(--accent);display:flex;align-items:center;gap:5px}
.plink{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.tnote{font-size:13px;color:var(--ink-3);border-top:1px solid var(--line);padding-top:13px;margin-top:2px}
.pcard.more{border:2px dashed var(--line);background:var(--soft);box-shadow:none;align-items:center;justify-content:center;
  text-align:center;padding:34px;gap:12px}
.pcard.more:hover{transform:translateY(-6px);border-color:var(--brand);box-shadow:none}
.pcard.more .tile{background:#fff;border:1px solid var(--line)}
.pcard.more b{font-size:18px;font-weight:800}
.pcard.more span{font-size:14px;color:var(--ink-3);max-width:260px}

/* tools (prominent, soft) */
.tcards2{display:flex;gap:20px;overflow-x:auto;overflow-y:visible;scroll-snap-type:x proximity;padding:8px 2px 16px}
.tcards2>*{flex:0 0 300px;scroll-snap-align:start}
.tcards2::-webkit-scrollbar{height:8px}
.tcards2::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
@media(max-width:560px){.cards>*,.tcards2>*{flex-basis:80%}}
.tool-more{min-height:280px}

/* status pills */
.pill{display:inline-block;font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px}
.pill.live{background:#E4F7F1;color:#0a7d68}
.pill.soon{background:#FFF4E0;color:#B47400}

/* membership */
.mwrap{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.mwrap .lead{margin-bottom:24px}
.benefit{display:flex;flex-direction:column;gap:14px}
.benefit li{display:flex;gap:12px;align-items:flex-start;list-style:none;font-size:15.5px;color:var(--ink-2)}
.benefit li b{color:var(--ink);font-weight:600}
.benefit li .ck{width:24px;height:24px;border-radius:7px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;flex:none;margin-top:2px}
.benefit li .ck .ic{width:15px;height:15px}
.price{background:#fff;border:2px solid var(--brand);border-radius:24px;padding:34px;box-shadow:var(--shadow);position:relative}
.price .ribbon{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--brand);color:#fff;
  font-size:12.5px;font-weight:700;padding:6px 16px;border-radius:999px;letter-spacing:.03em}
.price .name{font-size:16px;font-weight:700;color:var(--ink-2)}
.price .amt{font-size:48px;font-weight:800;letter-spacing:-.03em;margin:6px 0 2px}
.price .amt small{font-size:18px;font-weight:600;color:var(--ink-3)}
.price .desc{font-size:13.5px;color:var(--ink-3);margin-bottom:20px}
.price ul{list-style:none;display:flex;flex-direction:column;gap:11px;margin-bottom:24px}
.price li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2)}
.price li .ic{color:var(--teal);flex:none;margin-top:3px;width:18px;height:18px}
.price .btn{width:100%;justify-content:center}
.price .note{text-align:center;font-size:12.5px;color:var(--ink-3);margin-top:12px}

/* partner flow */
.flow{display:flex;align-items:stretch;justify-content:center}
.fstep{flex:1 1 0;max-width:330px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 26px;box-shadow:var(--shadow);transition:.2s ease}
.fstep:hover{transform:translateY(-5px);box-shadow:0 1px 2px rgba(20,22,40,.05),0 26px 46px -22px rgba(31,28,90,.3)}
.fic{width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:16px}
.fstep-n{display:inline-block;font-size:12px;font-weight:700;color:var(--brand);letter-spacing:.08em;margin-bottom:8px}
.fstep h3{font-size:18px;font-weight:700;margin-bottom:9px}
.fstep p{font-size:14.5px;color:var(--ink-2)}
.farrow{flex:0 0 54px;display:flex;align-items:center;justify-content:center;color:var(--brand-2)}
.farrow .ic{opacity:.5}
@media(max-width:860px){
  .flow{flex-direction:column;align-items:stretch}
  .fstep{max-width:none}
  .farrow{flex:0 0 38px;transform:rotate(90deg)}
}

/* feature / reason grid */
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.wc{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow)}
.wc .tile{background:var(--accent-soft)}
.wc h3{font-size:17px;font-weight:700;margin:14px 0 7px}
.wc p{font-size:14px;color:var(--ink-2)}

/* faq */
.faq{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.qa{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.qa button{width:100%;text-align:left;background:none;border:none;cursor:pointer;padding:20px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:16px;font-weight:600;color:var(--ink);font-family:inherit}
.qa .chev{transition:.25s;color:var(--ink-3);flex:none}
.qa.open .chev{transform:rotate(180deg)}
.qa .ans{max-height:0;overflow:hidden;transition:max-height .3s ease}
.qa .ans p{padding:0 22px 20px;color:var(--ink-2);font-size:14.5px}

/* final cta */
.final{background:linear-gradient(120deg,var(--brand),var(--brand-2) 55%,#A855F7);color:#fff;text-align:center;
  border-radius:30px;padding:64px 28px;position:relative;overflow:hidden}
.final h2{font-size:clamp(26px,4.4vw,42px);font-weight:800;letter-spacing:-.02em;margin-bottom:14px}
.final p{font-size:17px;opacity:.92;max-width:540px;margin:0 auto 28px}
.final .btn-accent{box-shadow:0 14px 30px -10px rgba(0,0,0,.4)}
.final .sub{margin-top:16px;font-size:14px;opacity:.85}

/* detail page — left sidebar switcher */
.dwrap{display:grid;grid-template-columns:200px 1fr;gap:46px;padding:40px 0 64px;align-items:start}
.dside{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
.dside-group{display:flex;flex-direction:column;gap:3px}
.dside-label{font-size:12px;font-weight:700;color:var(--ink-3);padding:2px 14px 4px;letter-spacing:.04em}
.dside-link{font-size:15px;font-weight:500;color:var(--ink-2);padding:10px 14px;border-radius:10px;transition:.16s ease;white-space:nowrap}
.dside-link:hover{background:var(--soft);color:var(--ink)}
.dside-link.active,.dside-link.active:hover{background:var(--brand);color:#fff}
.dside-link.soon{color:var(--ink-3);cursor:default}
.dside-link.soon:hover{background:transparent;color:var(--ink-3)}
.dmain .dtags{margin-bottom:6px}
.dtitle{font-size:clamp(28px,4.4vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.14;margin:0 0 16px;text-wrap:balance}
.dmain .lead{max-width:none;margin:0 0 18px}
.dmain .vbox{max-width:100%;margin:0}
@media(max-width:860px){
  .dwrap{grid-template-columns:1fr;gap:18px;padding:22px 0 48px}
  .dside{position:static;flex-direction:row;gap:14px;overflow-x:auto;padding-bottom:6px}
  .dside::-webkit-scrollbar{display:none}
  .dside-group{flex-direction:row;align-items:center;gap:6px;flex:none}
  .dside-label{padding:0 2px 0 0}
  .dside-link{padding:8px 14px;flex:none}
  .dmain .vbox{max-width:none}
}

/* qr modal */
.qr-modal{position:fixed;inset:0;z-index:200;background:rgba(15,16,22,.6);display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;visibility:hidden;transition:.2s ease}
.qr-modal.open{opacity:1;visibility:visible}
.qr-card{background:#fff;border-radius:var(--r);padding:32px 30px 26px;max-width:340px;width:100%;text-align:center;position:relative;transform:translateY(12px);transition:.22s ease}
.qr-modal.open .qr-card{transform:translateY(0)}
.qr-close{position:absolute;top:14px;right:14px;width:30px;height:30px;border:none;background:var(--soft);border-radius:50%;cursor:pointer;color:var(--ink-2);font-size:15px;display:flex;align-items:center;justify-content:center;line-height:1}
.qr-close:hover{background:var(--line);color:var(--ink)}
.qr-big{width:208px;height:208px;margin:4px auto 18px;border-radius:14px;overflow:hidden;background:#fff;display:flex;align-items:center;justify-content:center;border:1px solid var(--line)}
.qr-big img{width:100%;height:100%;object-fit:contain;transform:scale(1.12)}
.qr-card h3{font-size:19px;font-weight:700;color:var(--ink)}
.qr-card p{font-size:14px;color:var(--ink-2);margin-top:7px}
.dtags{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:14px}

/* footer */
footer{background:#101117;color:#A7AcBC;padding:42px 0 24px}
.foot{display:flex;justify-content:space-between;align-items:flex-start;gap:40px;flex-wrap:wrap}
.foot-info{max-width:480px}
.foot-qr{display:flex;flex-direction:column;align-items:center;text-align:center}
.foot-qr p{font-size:13px;margin-top:10px;color:#A7AcBC}
.foot .brand{color:#fff;margin-bottom:14px}
.foot p{font-size:14px;line-height:1.7}
.foot h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.foot ul{list-style:none;display:flex;flex-direction:column;gap:11px;font-size:14px}
.foot a:hover{color:#fff}
.qr{width:118px;height:118px;border-radius:12px;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden}
.qr img{width:100%;height:100%;object-fit:contain;display:block;transform:scale(1.14)}
.qr.ph::after{content:"微信二维码\A（放入 assets/wechat-qr.png）";white-space:pre-line;color:#101117;font-size:11px;font-weight:600;text-align:center;line-height:1.5;padding:8px}
.foot-bottom{border-top:1px solid #23252F;margin-top:26px;padding-top:18px;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;font-size:13px;color:#6A6F7E}
/* footer — 手机端压扁：品牌与二维码并排、码缩小、去掉位置不对又重复的那句 */
@media(max-width:768px){
  footer{padding:28px 0 20px}
  .foot{flex-wrap:nowrap;align-items:center;gap:18px}
  .foot-info{max-width:none;flex:1}
  .foot-info p:last-child{display:none}
  .foot p{font-size:13px}
  .foot .brand{margin-bottom:8px}
  .foot-qr{flex:none}
  .qr{width:92px;height:92px}
  .foot-qr p{font-size:12px;margin-top:7px}
  .foot-bottom{margin-top:16px;padding-top:14px}
}

/* mobile sticky bar */
.mbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  gap:10px}
.mbar .btn{flex:1;justify-content:center;padding:13px}

/* responsive */
@media(max-width:900px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .cards,.why{grid-template-columns:repeat(2,1fr)}
  .pillars,.mwrap{grid-template-columns:1fr}
  .foot{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links,.nav-right .btn{display:none}
  .nav-toggle{display:block}
  .sec{padding:62px 0}
  .hero{padding:48px 0 44px}
  .stats{margin-top:36px}
  .m-menu{display:block;position:fixed;inset:66px 0 auto 0;z-index:49;background:#fff;border-bottom:1px solid var(--line);
    padding:14px 24px 22px;transform:translateY(-120%);transition:.28s ease;box-shadow:var(--shadow)}
  .m-menu.show{transform:translateY(0)}
  .m-menu a{display:block;padding:13px 4px;font-size:16px;font-weight:500;color:var(--ink);border-bottom:1px solid var(--line)}
  .m-menu .btn{margin-top:16px;width:100%;justify-content:center}
  .mbar{display:flex}
  body{padding-bottom:74px}
  .final{padding:48px 22px;border-radius:22px}
}
@media(max-width:560px){
  .tcards2,.cards,.why{grid-template-columns:1fr}
  .wrap{padding:0 18px}
}

/* video intro placeholder */
.vbox{max-width:840px;margin:0 auto;aspect-ratio:16/9;background:radial-gradient(circle at 50% 42%,#23242F,#0E0F16);
  border-radius:var(--r);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;border:1px solid var(--line);overflow:hidden}
.vbox .play{width:74px;height:74px;border-radius:50%;background:rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.18s}
.vbox .play:hover{background:rgba(255,255,255,.26);transform:scale(1.06)}
.vbox .tri{width:0;height:0;border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:5px}
.vbox .vcap{color:rgba(255,255,255,.62);font-size:13px}