:root{
  --bg:#F1F3F9;
  --bg2:#E6EAF4;
  --card:#FFFFFF;
  --line:#DBE2EF;
  --deep:#141A2E;
  --deep2:#1E2740;
  --pri:#4657D0;
  --pri-d:#2F3EA8;
  --pri-l:#E8ECFC;
  --acc:#FF6B57;
  --acc-d:#D24630;
  --acc-l:#FEE8E3;
  --gold:#FFC24B;
  --txt:#1B2136;
  --muted:#5C6580;
  --sh:0 10px 28px rgba(24,34,66,.08);
  --rad:18px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--txt);font-size:16px;line-height:1.8;
  font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif}
img{max-width:100%;height:auto;display:block}
figure,figcaption,blockquote,dl,dd,table{margin:0}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:1.15em}
a{color:var(--pri);text-decoration:none}
a:hover{color:var(--pri-d)}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
::selection{background:var(--pri-l)}

.top{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.93);
  border-bottom:1px solid var(--line)}
.top__in{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--txt);font-weight:700;flex:0 0 auto}
.brand img{width:40px;height:40px;border-radius:11px;box-shadow:0 4px 12px rgba(70,87,208,.26)}
.brand__txt{font-size:19px;letter-spacing:.6px}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{display:block;padding:8px 13px;border-radius:10px;color:var(--txt);font-size:15px}
.nav a:hover{background:var(--pri-l);color:var(--pri-d)}
.nav a[aria-current="page"]{background:var(--pri);color:#fff}
.top__dl{margin-left:4px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;
  padding:12px 24px;border-radius:999px;font-weight:700;font-size:15px;line-height:1;
  border:0;cursor:pointer;transition:background .2s,color .2s,box-shadow .2s,transform .2s;
  -webkit-appearance:none;appearance:none}
.btn.btn-primary{color:#fff;background:linear-gradient(120deg,var(--pri),var(--acc));
  box-shadow:0 8px 20px rgba(70,87,208,.28)}
.btn.btn-primary:hover{color:#fff;background:linear-gradient(120deg,var(--pri-d),var(--acc-d));
  box-shadow:0 10px 24px rgba(70,87,208,.34)}
.btn.btn-ghost{color:var(--pri-d);background:#fff;border:1px solid var(--line)}
.btn.btn-ghost:hover{color:var(--pri-d);background:var(--pri-l)}
.btn.btn-lg{padding:15px 30px;font-size:16px}

.hero{position:relative;overflow:hidden;
  background:
    radial-gradient(760px 420px at 6% 0%,rgba(70,87,208,.17),transparent 62%),
    radial-gradient(640px 400px at 97% 90%,rgba(255,107,87,.17),transparent 62%),
    linear-gradient(158deg,#F8FAFE 0%,#EEF2FB 48%,#E9EDF8 100%)}
.hero__deco{position:absolute;right:-30px;top:-30px;width:400px;height:400px;pointer-events:none;
  background-image:radial-gradient(rgba(70,87,208,.22) 1.3px,transparent 1.3px);
  background-size:15px 15px;opacity:.75}
.hero__in{display:flex;align-items:center;gap:44px;padding:58px 22px 68px;position:relative;z-index:1}
.hero__txt{flex:1 1 470px;min-width:0}
.hero__shot{flex:0 0 340px}
.hero__shot img{width:100%;max-width:320px;height:auto;margin:0 auto;border-radius:24px;
  box-shadow:0 24px 48px rgba(28,40,92,.24),0 0 0 1px rgba(255,255,255,.8)}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.6px;
  color:var(--pri-d);background:var(--pri-l);border:1px solid rgba(70,87,208,.24);
  border-radius:999px;padding:5px 15px;margin-bottom:18px}
h1{font-size:clamp(30px,4.6vw,50px);line-height:1.18;font-weight:800;letter-spacing:-.6px}
.lead{font-size:16.5px;color:var(--muted);margin-top:16px;max-width:640px}
.hero__act{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero__meta{margin-top:18px;font-size:13.5px;color:var(--muted);display:flex;gap:20px;flex-wrap:wrap}

.sec{padding:64px 0}
.sec--tight{padding:46px 0}
.sec--alt{background:var(--bg2)}
.sec__hd{display:flex;align-items:center;gap:12px}
.sec__mark{position:relative;flex:0 0 auto;width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--pri),var(--acc));box-shadow:0 6px 14px rgba(70,87,208,.28)}
.sec__mark::before,.sec__mark::after{content:"";position:absolute;top:6px;bottom:6px;width:3px;
  background-image:radial-gradient(circle,#fff 1.2px,transparent 1.4px);
  background-size:3px 6px;background-repeat:repeat-y}
.sec__mark::before{left:4px}
.sec__mark::after{right:4px}
h2{font-size:clamp(21px,2.4vw,25px);font-weight:800;letter-spacing:-.2px;line-height:1.35}
.sec__rail{height:1px;margin-top:14px;
  background:linear-gradient(90deg,rgba(70,87,208,.55),rgba(255,107,87,.28) 42%,rgba(70,87,208,0))}
.sec__sub{font-size:15px;color:var(--muted);margin-top:12px;max-width:760px}
.sec__body{margin-top:26px}

.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--rad);
  padding:24px 22px;box-shadow:var(--sh)}
.tc{position:absolute;top:13px;right:13px;font-size:11px;font-weight:700;letter-spacing:.7px;
  color:var(--pri-d);background:var(--pri-l);border-radius:6px;padding:3px 8px}
.card h3{font-size:17px;font-weight:800;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--muted)}

.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}

.facts{position:relative;z-index:2;margin-top:-34px}
.fact{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);
  padding:20px 18px 17px;box-shadow:var(--sh)}
.fact b{display:block;font-size:25px;font-weight:800;color:var(--pri-d);line-height:1.2}
.fact span{display:block;font-size:13.5px;color:var(--muted);margin-top:4px}

.shots{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.shots--2{grid-template-columns:repeat(2,1fr)}
.shot{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:12px;
  box-shadow:var(--sh)}
.shot img{width:auto;max-width:100%;height:auto;margin:0 auto;border-radius:10px}
.shot figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;line-height:1.6}

.entry{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--rad);
  padding:26px 22px;box-shadow:var(--sh);color:var(--txt);transition:transform .2s,box-shadow .2s}
.entry:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(24,34,66,.13);color:var(--txt)}
.entry b{display:block;font-size:18px;font-weight:800;margin-bottom:9px}
.entry span{display:block;font-size:14.5px;color:var(--muted)}
.entry i{display:inline-block;margin-top:14px;font-style:normal;font-size:14px;font-weight:700;
  color:var(--pri-d)}

.review{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--pri);
  border-radius:14px;padding:22px;box-shadow:var(--sh)}
.review p{font-size:15px;color:var(--txt)}
.review cite{display:block;margin-top:14px;font-style:normal;font-size:13.5px;color:var(--muted)}
.score{display:inline-block;font-size:13px;font-weight:700;color:#8A6A10;background:#FFF6E2;
  border-radius:6px;padding:3px 8px;margin-bottom:10px;letter-spacing:1px}

.qa{border:1px solid var(--line);border-radius:14px;background:var(--card);box-shadow:var(--sh)}
.qa details{border-bottom:1px solid var(--line)}
.qa details:last-child{border-bottom:0}
.qa summary{cursor:pointer;padding:16px 20px;font-weight:700;font-size:15.5px;list-style:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";float:right;color:var(--pri);font-weight:800}
.qa details[open] summary::after{content:"–"}
.qa .a{padding:0 20px 18px;font-size:14.5px;color:var(--muted)}
.faq-tools{margin-top:16px;display:flex;gap:10px;flex-wrap:wrap}
.faq-tools button{font:inherit;font-size:14px;font-weight:700;color:var(--pri-d);background:#fff;
  border:1px solid var(--line);border-radius:999px;padding:9px 18px;cursor:pointer}
.faq-tools button:hover{background:var(--pri-l)}

.prose{max-width:820px}
.prose h3{font-size:18px;font-weight:800;margin:26px 0 8px}
.prose p{font-size:15.5px;color:#3A4256;margin-top:13px;line-height:1.92}
.prose ul,.prose ol{margin-top:12px;font-size:15.5px;color:#3A4256}
.prose li{margin-top:7px}
.note{background:var(--pri-l);border:1px solid rgba(70,87,208,.22);border-radius:14px;
  padding:18px 20px;margin-top:18px;font-size:15px;color:#31395A}
.steps{counter-reset:s;margin-top:18px}
.steps li{list-style:none;position:relative;padding-left:46px;margin-top:16px;font-size:15.5px;color:#3A4256}
.steps li::before{counter-increment:s;content:counter(s,decimal-leading-zero);position:absolute;
  left:0;top:1px;width:32px;height:32px;border-radius:10px;font-size:13px;font-weight:800;
  color:#fff;background:linear-gradient(135deg,var(--pri),var(--acc));display:flex;
  align-items:center;justify-content:center}
.tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.tags span{font-size:13.5px;color:var(--pri-d);background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:6px 14px}

.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:
    radial-gradient(620px 320px at 4% 0%,rgba(70,87,208,.16),transparent 64%),
    radial-gradient(520px 300px at 96% 100%,rgba(255,107,87,.15),transparent 64%),
    linear-gradient(158deg,#F8FAFE,#E9EDF8)}
.page-hero__in{padding:46px 22px 42px;position:relative;z-index:1}
.page-hero h1{font-size:clamp(26px,3.6vw,38px)}
.crumb{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--pri-d)}

.cta{position:relative;overflow:hidden;border-radius:26px;padding:46px 34px;text-align:center;
  background:linear-gradient(118deg,#141A2E,#242E56 58%,#3B2C50);color:#fff}
.cta::after{content:"";position:absolute;left:0;right:0;bottom:0;height:6px;
  background:linear-gradient(90deg,var(--pri),var(--acc),var(--gold))}
.cta h2{color:#fff;font-size:clamp(22px,2.6vw,28px)}
.cta p{color:#C3CADF;font-size:15.5px;margin-top:12px}
.cta__act{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.cta .btn.btn-primary{color:#2A1D00;background:linear-gradient(120deg,var(--gold),#FFD98A);
  box-shadow:0 10px 26px rgba(255,194,75,.28)}
.cta .btn.btn-primary:hover{color:#2A1D00;background:linear-gradient(120deg,#FFD98A,var(--gold))}
.cta .btn.btn-ghost{color:#fff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.36)}
.cta .btn.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.22)}

.foot{background:var(--deep);color:#B7BFD3;margin-top:66px;padding:48px 0 26px}
.foot__grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:28px}
.foot h3{font-size:15px;color:#fff;font-weight:800;margin-bottom:13px}
.foot p{font-size:14px;color:#98A1B8;margin-top:10px}
.foot__links a{display:block;padding:4px 0;font-size:14px;color:#C8CFE0}
.foot__links a:hover{color:#fff}
.foot .btn.btn-primary{display:inline-flex;padding:12px 24px;border-radius:999px;
  color:#2A1D00;background:linear-gradient(120deg,var(--gold),#FFD98A);white-space:nowrap;
  box-shadow:0 8px 20px rgba(255,194,75,.2)}
.foot .btn.btn-primary:hover{color:#2A1D00;background:linear-gradient(120deg,#FFD98A,var(--gold))}
.foot__note{margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.13);
  font-size:13px;color:#8B94AC;line-height:1.85}
.foot__note b{color:#B7BFD3;font-weight:700}

@keyframes reelIn{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}
.fx{animation:reelIn .58s cubic-bezier(.2,.7,.3,1) both}
.fx.d1{animation-delay:.07s}
.fx.d2{animation-delay:.14s}
.fx.d3{animation-delay:.21s}
@media (prefers-reduced-motion:reduce){
  .fx{animation:none;opacity:1;transform:none}
  html{scroll-behavior:auto}
}

@media (max-width:980px){
  .hero__in{flex-direction:column;align-items:flex-start;gap:30px;padding:46px 22px 54px}
  .hero__shot{flex:0 0 auto;width:100%}
  .hero__shot img{max-width:300px}
  .hero__deco{width:280px;height:280px}
  .facts__grid{grid-template-columns:repeat(2,1fr)}
  .grid3{grid-template-columns:1fr 1fr}
  .grid4{grid-template-columns:1fr 1fr}
  .shots{grid-template-columns:repeat(3,1fr)}
  .shots--2{grid-template-columns:repeat(2,1fr)}
  .foot__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .top__in{flex-wrap:wrap;padding-top:8px;padding-bottom:8px;row-gap:6px}
  .brand{order:1}
  .top__dl{order:2;margin-left:auto}
  .nav{order:3;flex:1 0 100%;margin-left:0;justify-content:center}
  .nav a{font-size:14px;padding:7px 10px}
  .hero__in{padding:34px 22px 44px}
  h1{font-size:29px}
  .sec{padding:50px 0}
  .facts{margin-top:-24px}
  .facts__grid{grid-template-columns:1fr 1fr}
  .grid2,.grid3,.grid4{grid-template-columns:1fr}
  .shots{grid-template-columns:repeat(2,1fr)}
  .shots--2{grid-template-columns:1fr}
  .foot__grid{grid-template-columns:1fr}
  .cta{padding:36px 22px;border-radius:20px}
  .hero__meta{gap:12px}
}