:root{
  --paper:#FBF9F6;
  --paper-2:#F4F1EC;
  --card:#FFFFFF;
  --ink:#17151C;
  --ink-soft:#57535F;
  --ink-faint:#8A8593;
  --line:#E9E3DA;
  --coral:#FF5630;
  --coral-btn:#E23E1C;
  --coral-soft:#FFE9E2;
  --teal:#0FA89A;
  --teal-deep:#0B7C72;
  --teal-soft:#DCF4F1;
  --amber:#F2A516;
  --radius:18px;
  --radius-lg:28px;
  --shadow-sm:0 1px 2px rgba(23,21,28,.05),0 2px 8px rgba(23,21,28,.04);
  --shadow-md:0 12px 30px -12px rgba(23,21,28,.18);
  --shadow-lg:0 30px 60px -24px rgba(23,21,28,.30);
  --ease:cubic-bezier(.22,1,.36,1);
  --maxw:1180px;
  --font-disp:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans CN",system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
  --font-body:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono)}
.eyebrow{
  font-family:var(--font-mono);
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--coral-btn);font-weight:700;
  display:inline-flex;align-items:center;gap:8px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--coral);border-radius:2px}
h1,h2,h3{font-family:var(--font-disp);line-height:1.12;letter-spacing:-.01em;font-weight:800}
h2{font-size:clamp(28px,4vw,46px)}
h3{font-size:clamp(19px,2.2vw,23px)}
p{color:var(--ink-soft)}

/* ---------- NAV ---------- */
header.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(251,249,246,.82);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-disp);font-weight:800;font-size:20px}
.logo .mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);
  color:#fff;display:grid;place-items:center;font-family:var(--font-mono);font-weight:700;font-size:15px;
  position:relative;overflow:hidden;
}
.logo .mark span{position:relative;z-index:2}
.logo .mark::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--coral),var(--amber));opacity:.9}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:15px;color:var(--ink-soft);font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  font-family:var(--font-disp);font-weight:700;font-size:15px;
  padding:12px 22px;border-radius:999px;cursor:pointer;border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .2s;white-space:nowrap;
}
.btn-primary{background:var(--coral-btn);color:#fff;box-shadow:0 10px 22px -10px rgba(226,62,28,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px -12px rgba(226,62,28,.8)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.nav .btn{padding:10px 18px;font-size:14px}
.menu-btn{display:none}

/* ---------- HERO ---------- */
.hero{position:relative;padding:74px 0 90px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5}
.blob.b1{width:420px;height:420px;background:var(--coral);top:-120px;right:-80px;opacity:.32}
.blob.b2{width:360px;height:360px;background:var(--teal);bottom:-140px;left:-100px;opacity:.26}
.grid-tex{position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:46px 46px;mask-image:radial-gradient(circle at 70% 30%,#000,transparent 75%);opacity:.5}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.hero h1{font-size:clamp(34px,5.4vw,62px);margin:18px 0 20px}
.hero h1 .hl{color:var(--coral-btn);position:relative;white-space:nowrap}
.hero h1 .hl::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:12px;background:var(--coral-soft);z-index:-1;border-radius:4px}
.hero p.lead{font-size:clamp(16px,1.7vw,19px);max-width:520px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-note{margin-top:18px;font-size:13.5px;color:var(--ink-faint);display:flex;align-items:center;gap:8px}
.hero-note b{color:var(--teal-deep)}

/* device mockups */
.stage{position:relative;display:grid;place-items:center;min-height:460px}
.phone{
  width:248px;height:500px;border-radius:38px;background:var(--ink);
  padding:11px;box-shadow:var(--shadow-lg);position:relative;z-index:3;
  transform:rotate(-3deg);
  transition:transform .5s var(--ease);
}
.phone:hover{transform:rotate(0deg) translateY(-6px)}
.phone .screen{
  width:100%;height:100%;border-radius:28px;background:var(--paper);overflow:hidden;
  display:flex;flex-direction:column;
}
.phone.android{position:absolute;right:-26px;bottom:-30px;width:196px;height:400px;transform:rotate(7deg);z-index:2;opacity:.96}
.phone.android:hover{transform:rotate(4deg) translateY(-4px)}
/* mini-program screen content */
.mp-top{background:linear-gradient(135deg,var(--coral),var(--amber));padding:18px 16px 14px;color:#fff}
.mp-top .t{font-family:var(--font-disp);font-weight:800;font-size:17px}
.mp-top .s{font-size:11px;opacity:.92;margin-top:2px}
.mp-search{margin:12px 14px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 12px;font-size:12px;color:var(--ink-faint);display:flex;justify-content:space-between;align-items:center}
.mp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:4px 14px}
.mp-cell{background:var(--paper-2);border-radius:12px;padding:12px 6px;text-align:center;font-size:11px;color:var(--ink-soft)}
.mp-cell .ic{width:26px;height:26px;border-radius:8px;background:var(--coral-soft);margin:0 auto 6px;display:grid;place-items:center;color:var(--coral-btn);font-size:14px}
.mp-card{margin:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px}
.mp-card .row{display:flex;align-items:center;justify-content:space-between}
.mp-card .bar{height:8px;border-radius:4px;background:var(--teal-soft);margin-top:8px;position:relative;overflow:hidden}
.mp-card .bar i{position:absolute;left:0;top:0;bottom:0;width:64%;background:var(--teal);border-radius:4px}
.mp-card .tag{font-size:10px;background:var(--coral-soft);color:var(--coral-btn);padding:2px 8px;border-radius:999px;font-weight:700}
/* android screen */
.ad-top{background:var(--ink);color:#fff;padding:16px 14px 12px}
.ad-top .t{font-family:var(--font-disp);font-weight:800;font-size:15px}
.ad-top .s{font-size:10px;opacity:.7}
.ad-list{padding:12px 12px;display:flex;flex-direction:column;gap:10px}
.ad-item{display:flex;align-items:center;gap:10px}
.ad-item .pic{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--teal),#7ad9cf);flex:none}
.ad-item .ln{height:7px;border-radius:4px;background:var(--paper-2);flex:1}
.ad-item .ln.s{width:55%}
.ad-fab{position:absolute;right:18px;bottom:18px;width:34px;height:34px;border-radius:50%;background:var(--coral);color:#fff;display:grid;place-items:center;font-size:18px;box-shadow:var(--shadow-md)}
.ai-badge{
  position:absolute;top:8px;left:-10px;z-index:5;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-md);
  border-radius:14px;padding:10px 14px;display:flex;align-items:center;gap:10px;
  animation:float 4.5s ease-in-out infinite;
}
.ai-badge .dot{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--teal),var(--coral));display:grid;place-items:center;color:#fff;font-family:var(--font-mono);font-weight:700;font-size:14px}
.ai-badge .txt b{display:block;font-size:13px;font-family:var(--font-disp)}
.ai-badge .txt small{font-size:10.5px;color:var(--ink-faint)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ---------- STATS ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-top:30px;padding-bottom:30px}
.stat{text-align:center}
.stat .n{font-family:var(--font-disp);font-weight:800;font-size:clamp(28px,3.4vw,40px);color:var(--ink);line-height:1}
.stat .n em{font-style:normal;color:var(--coral-btn)}
.stat .l{font-size:13.5px;color:var(--ink-soft);margin-top:6px}

/* ---------- SECTION ---------- */
section{padding:84px 0}
.sec-head{max-width:680px;margin-bottom:46px}
.sec-head h2{margin:14px 0 12px}
.sec-head p{font-size:16.5px}

/* services */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 26px;box-shadow:var(--shadow-sm);transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s}
.svc:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.svc .ico{width:54px;height:54px;border-radius:15px;display:grid;place-items:center;margin-bottom:18px;color:#fff}
.svc.c1 .ico{background:linear-gradient(135deg,var(--coral),var(--amber))}
.svc.c2 .ico{background:linear-gradient(135deg,var(--teal),#1fc3b3)}
.svc.c3 .ico{background:linear-gradient(135deg,var(--ink),#3a3645)}
.svc h3{margin-bottom:10px}
.svc p{font-size:14.5px;margin-bottom:16px}
.svc ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.svc li{font-size:14px;color:var(--ink-soft);display:flex;gap:9px;align-items:flex-start}
.svc li svg{flex:none;margin-top:3px;color:var(--teal-deep)}

/* pricing */
.price-sec{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plan{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 26px;display:flex;flex-direction:column;position:relative;box-shadow:var(--shadow-sm);transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.plan:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.plan.best{border:2px solid var(--coral);box-shadow:var(--shadow-md)}
.plan .flag{position:absolute;top:-13px;left:26px;background:var(--coral);color:#fff;font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.08em;padding:5px 12px;border-radius:999px}
.plan .pname{font-family:var(--font-disp);font-weight:700;font-size:19px}
.plan .pdesc{font-size:13.5px;color:var(--ink-faint);margin:6px 0 16px;min-height:40px}
.plan .price{font-family:var(--font-disp);font-weight:800;font-size:38px;line-height:1;color:var(--ink)}
.plan .price small{font-size:14px;font-weight:600;color:var(--ink-faint);font-family:var(--font-body)}
.plan .price .unit{font-size:14px;font-weight:600;color:var(--ink-soft)}
.plan .feats{list-style:none;margin:20px 0 24px;display:flex;flex-direction:column;gap:11px;flex:1}
.plan .feats li{font-size:14px;color:var(--ink-soft);display:flex;gap:9px;align-items:flex-start}
.plan .feats li svg{flex:none;margin-top:3px;color:var(--coral-btn)}
.plan .btn{width:100%}
.plan.best .btn{background:var(--coral-btn)}
.plan:not(.best) .btn{background:var(--ink);color:#fff}
.afford-note{text-align:center;margin-top:26px;font-size:14px;color:var(--ink-soft)}
.afford-note b{color:var(--teal-deep)}

/* cases */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .4s var(--ease),box-shadow .4s var(--ease);
  display:flex;flex-direction:column;
}
.case:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.case .cover{position:relative;height:240px;overflow:hidden;display:grid;place-items:center;background-size:cover;background-position:center;background-repeat:no-repeat}
.case .cover .cover-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.case .cover .glow{position:absolute;width:280px;height:280px;border-radius:50%;filter:blur(50px);opacity:.6}
.case .cover .chip{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.9);backdrop-filter:blur(4px);font-family:var(--font-mono);font-size:11px;font-weight:700;padding:5px 11px;border-radius:999px;color:var(--ink);z-index:3}
.case .cover .metric{position:absolute;bottom:14px;right:14px;background:rgba(23,21,28,.82);color:#fff;font-family:var(--font-mono);font-size:12px;font-weight:700;padding:6px 11px;border-radius:10px;z-index:3}
/* mini phone in cover */
.mini{width:128px;height:258px;border-radius:22px;background:#fff;padding:7px;box-shadow:0 18px 40px -16px rgba(0,0,0,.5);position:relative;z-index:2;transform:rotate(-2deg)}
.mini .scr{width:100%;height:100%;border-radius:16px;overflow:hidden;display:flex;flex-direction:column}
.mini .scr .h{padding:14px 12px 10px;color:#fff;font-family:var(--font-disp);font-weight:800;font-size:13px}
.mini .scr .body{padding:10px 11px;flex:1;display:flex;flex-direction:column;gap:8px}
.mini .blk{border-radius:8px;background:rgba(255,255,255,.55);height:10px}
.mini .blk.w70{width:70%}.mini .blk.w90{width:90%}.mini .blk.w50{width:50%}
.mini .pill{border-radius:999px;background:rgba(255,255,255,.7);height:18px;display:flex;align-items:center;justify-content:center;font-size:9px;font-weight:700;color:rgba(0,0,0,.55)}
.case .meta{padding:18px 20px 22px}
.case .meta h3{font-size:18px;margin-bottom:5px}
.case .meta p{font-size:13.5px}
.case .meta .tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}
.case .meta .tags span{font-size:11.5px;background:var(--paper-2);color:var(--ink-soft);padding:4px 10px;border-radius:999px;font-weight:600}

/* process */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.step{position:relative;padding-top:18px}
.step .num{font-family:var(--font-disp);font-weight:800;font-size:15px;color:var(--coral-btn);display:flex;align-items:center;gap:10px;margin-bottom:14px}
.step .num::before{counter-increment:s;content:"0" counter(s);font-size:34px;color:var(--ink);opacity:.12;line-height:1}
.step .box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow-sm);height:100%}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:13.5px}

/* why */
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.why .item{display:flex;gap:14px;align-items:flex-start}
.why .item .ic{width:42px;height:42px;border-radius:12px;background:var(--coral-soft);color:var(--coral-btn);display:grid;place-items:center;flex:none;font-size:20px}
.why .item h3{font-size:16.5px;margin-bottom:5px}
.why .item p{font-size:14px}

/* CTA */
.cta-band{background:var(--ink);border-radius:var(--radius-lg);padding:54px 44px;color:#fff;position:relative;overflow:hidden;box-shadow:var(--shadow-lg)}
.cta-band::before{content:"";position:absolute;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,var(--coral),transparent 70%);top:-160px;right:-80px;opacity:.55}
.cta-band::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,var(--teal),transparent 70%);bottom:-150px;left:-60px;opacity:.4}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta-inner h2{color:#fff;max-width:560px}
.cta-inner p{color:rgba(255,255,255,.8);margin-top:10px;max-width:520px}
.cta-band .btn-primary{background:var(--coral);box-shadow:0 12px 26px -10px rgba(255,86,48,.8)}
.cta-band .btn-primary:hover{background:var(--coral)}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.cta-band .btn-ghost:hover{border-color:#fff}

/* footer */
footer{background:var(--paper-2);border-top:1px solid var(--line);padding:54px 0 30px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:36px}
.foot-grid h4{font-family:var(--font-disp);font-size:14px;margin-bottom:14px;color:var(--ink)}
.foot-grid a{display:block;font-size:14px;color:var(--ink-soft);margin-bottom:9px;transition:color .2s}
.foot-grid a:hover{color:var(--coral-btn)}
.foot-about p{font-size:13.5px;color:var(--ink-soft);max-width:300px;margin-top:12px}
.foot-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--ink-faint)}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* FAQ */
.faq{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.faq-i{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.faq-i summary{cursor:pointer;padding:18px 20px;font-family:var(--font-disp);font-weight:700;font-size:15.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-i summary::-webkit-details-marker{display:none}
.faq-i summary::after{content:"+";color:var(--coral-btn);font-size:22px;font-weight:700;line-height:1;transition:transform .3s}
.faq-i[open] summary::after{content:"\2212"}
.faq-i p{padding:0 20px 18px;font-size:14.5px;color:var(--ink-soft)}

/* responsive */
@media(max-width:960px){
  .hero .wrap{grid-template-columns:1fr;gap:40px}
  .stage{min-height:420px}
  .cards-3,.plans,.cases,.why{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stats .wrap{grid-template-columns:repeat(2,1fr);gap:26px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .cards-3,.plans,.cases,.why,.steps{grid-template-columns:1fr}
  .faq{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-band{padding:40px 26px}
  section{padding:60px 0}
  .hero{padding:46px 0 60px}
}