:root{
  --bg:#F7F5EF;
  --panel:#FFFFFF;
  --panel-2:#F1EEE6;
  --line:#E4DFD3;
  --line-d:#D3CCBA;
  --ink:#2A2740;
  --ink-2:#4A4560;
  --mut:#6B6683;
  --deep:#322A6B;
  --deep-2:#251F52;
  --mid:#6C63C8;
  --accent:#5B4BC4;
  --accent-2:#8A7BE8;
  --lilac:#B49BF5;
  --lilac-soft:#EFE9FD;
  --wrap:1180px;
  --r:10px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','WenQuanYi Micro Hei',Arial,sans-serif;
  font-size:16px;line-height:1.78;
}
h1,h2,h3,h4,h5,h6,p,figure,figcaption,blockquote,dl,dd,dt,table,ul,ol,li{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--deep)}
h1,h2,h3{line-height:1.34;font-weight:700;color:var(--deep)}
h1{font-size:34px;letter-spacing:-.2px}
h2{font-size:25px}
h3{font-size:18px;color:var(--ink)}
b,strong{font-weight:700}

.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:2.4px;
  text-transform:uppercase;color:var(--accent);margin-bottom:12px;
}


.top{
  position:sticky;top:0;z-index:40;background:rgba(247,245,239,.94);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px);
}
.top__in{
  max-width:var(--wrap);margin:0 auto;padding:12px 22px;
  display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand img{width:36px;height:36px;border-radius:9px}
.brand__t{display:flex;flex-direction:column;line-height:1.2}
.brand__t b{font-size:18px;color:var(--deep);letter-spacing:.3px}
.brand__t span{font-size:11.5px;color:var(--mut);letter-spacing:.6px}
.nav{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap}
.nav a{
  display:block;padding:7px 12px;border-radius:8px;font-size:15px;color:var(--ink-2);
  border:1px solid transparent;white-space:nowrap;
}
.nav a:hover{background:var(--lilac-soft);color:var(--deep)}
.nav a[aria-current="page"]{background:var(--lilac-soft);color:var(--deep);border-color:#DDD2F7;font-weight:700}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15.5px;font-weight:700;
  border:1px solid transparent;white-space:nowrap;
}
.btn.btn-primary{
  display:inline-flex;padding:12px 24px;color:#fff;white-space:nowrap;
  background:linear-gradient(120deg,var(--accent),var(--accent-2));
  border:1px solid var(--accent);
  box-shadow:0 6px 18px rgba(91,75,196,.24);
}
.btn.btn-primary:hover{
  display:inline-flex;padding:12px 24px;color:#fff;white-space:nowrap;
  background:linear-gradient(120deg,var(--deep),var(--accent));
}
.btn.btn-ghost{
  display:inline-flex;padding:12px 24px;color:var(--deep);white-space:nowrap;
  background:var(--panel);border:1px solid var(--line-d);
}
.btn.btn-ghost:hover{
  display:inline-flex;padding:12px 24px;color:var(--deep);white-space:nowrap;
  background:var(--lilac-soft);border-color:#CBBBF3;
}
.top__in > .btn{margin-left:2px;padding:9px 18px;font-size:14.5px}


.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(760px 340px at 88% -12%, rgba(138,123,232,.30), rgba(138,123,232,0) 68%),
    radial-gradient(520px 300px at 4% 106%, rgba(180,155,245,.24), rgba(180,155,245,0) 70%),
    linear-gradient(180deg,#FBF9F4,#F4F1E9);
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--deep),var(--accent),var(--lilac));
}
.hero__in{
  max-width:var(--wrap);margin:0 auto;padding:52px 22px 56px;
  display:grid;grid-template-columns:minmax(0,1.04fr) minmax(0,.96fr);
  gap:44px;align-items:center;position:relative;z-index:1;
}
.hero__txt h1{margin-bottom:16px}
.lead{font-size:16.5px;color:var(--ink-2);max-width:56ch}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:26px}
.cta-note{font-size:13.5px;color:var(--mut)}
.hero__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.hero__tags li{
  font-size:13px;color:var(--deep);background:var(--panel);
  border:1px solid var(--line);border-radius:7px;padding:5px 11px;
}
.hero__shot{margin:0 auto;width:100%;max-width:320px}
.hero__shot img{
  width:100%;max-width:320px;height:auto;margin:0 auto;
  border-radius:14px;box-shadow:0 0 0 8px #fff,0 16px 34px rgba(50,42,107,.16);
}
.hero__shot figcaption{
  text-align:center;font-size:13px;color:var(--mut);margin-top:16px;
}


.stats{background:var(--panel);border-bottom:1px solid var(--line)}
.stats__in{
  max-width:var(--wrap);margin:0 auto;padding:26px 22px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.stat{border-left:3px solid var(--accent-2);padding-left:14px}
.stat b{display:block;font-size:24px;color:var(--deep);line-height:1.2}
.stat span{font-size:13.5px;color:var(--mut)}


.sec{padding:56px 22px 58px}
.section-gap{padding:52px 0 58px}
.sec--tint{background:var(--panel-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec__hd{max-width:var(--wrap);margin:0 auto 26px}
.sec__hd p{
  color:var(--mut);font-size:15px;margin-top:8px;max-width:76ch;
}
.sec__body{max-width:var(--wrap);margin:0 auto}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{
  background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--accent-2);
  border-radius:var(--r);padding:20px 20px 18px;
}
.card h3{margin-bottom:8px}
.card p{font-size:14.5px;color:var(--ink-2)}
.card__k{
  display:inline-block;font-size:12px;font-weight:700;color:var(--accent);
  letter-spacing:1.2px;margin-bottom:9px;
}

.gal{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.gal figure{margin:0}
.gal img{
  width:auto;max-width:100%;height:auto;margin:0 auto;border-radius:12px;
  box-shadow:0 0 0 6px #fff,0 10px 24px rgba(50,42,107,.13);
}
.gal figcaption{
  text-align:center;font-size:13.5px;color:var(--mut);margin-top:14px;
}

.doc{
  max-width:var(--wrap);margin:0 auto;padding:0 22px;
  display:grid;grid-template-columns:1fr;gap:30px;
}
.toc{
  background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--accent-2);
  border-radius:var(--r);padding:16px 18px;
}
.toc__t{font-size:13px;font-weight:700;color:var(--deep);letter-spacing:1.4px;margin-bottom:10px}
.toc a{display:block;font-size:14.5px;color:var(--ink-2);padding:5px 0;border-bottom:1px dashed var(--line)}
.toc a:last-child{border-bottom:0}
.toc a:hover{color:var(--accent)}

.prose{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:28px 26px}
.prose + .prose{margin-top:18px}
.prose h2{margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.prose h3{margin:22px 0 8px}
.prose h3:first-of-type{margin-top:0}
.prose p{font-size:15.5px;color:var(--ink-2);margin-bottom:12px}
.prose p:last-child{margin-bottom:0}
.prose ul{margin:0 0 12px}
.prose li{
  font-size:15px;color:var(--ink-2);padding-left:18px;position:relative;margin-bottom:7px;
}
.prose li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
  background:var(--accent-2);
}
.args{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:6px}
.arg{background:var(--lilac-soft);border-radius:9px;padding:15px 16px}
.arg b{display:block;font-size:14.5px;color:var(--deep);margin-bottom:5px}
.arg span{font-size:14px;color:var(--ink-2)}

.steps{counter-reset:s;margin-top:4px}
.steps li{
  counter-increment:s;position:relative;padding:0 0 16px 42px;font-size:15.5px;color:var(--ink-2);
}
.steps li::before{
  content:counter(s);position:absolute;left:0;top:0;width:27px;height:27px;border-radius:8px;
  background:var(--deep);color:#fff;font-size:13.5px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.steps li::after{
  content:"";position:absolute;left:13px;top:31px;bottom:2px;width:1px;background:var(--line-d);
}
.steps li:last-child{padding-bottom:0}
.steps li:last-child::after{display:none}

.cite{
  background:var(--panel-2);border:1px solid var(--line);border-left:3px solid var(--accent-2);
  border-radius:9px;padding:16px 18px;
}
.cite p{font-size:15px;color:var(--ink-2)}
.cite cite{display:block;font-style:normal;font-size:13.5px;color:var(--mut);margin-top:9px}

.qa{border-top:1px solid var(--line)}
.qa:first-of-type{border-top:0}
.qa summary{
  cursor:pointer;list-style:none;font-size:15.5px;font-weight:700;color:var(--deep);
  padding:15px 30px 15px 0;position:relative;
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{
  content:"+";position:absolute;right:6px;top:14px;font-size:19px;color:var(--accent);
  font-weight:700;line-height:1;
}
.qa[open] summary::after{content:"\2013"}
.qa p{font-size:15px;color:var(--ink-2);padding:0 26px 16px 0}

.score{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.score span{
  font-size:13.5px;color:var(--deep);background:var(--panel-2);
  border:1px solid var(--line);border-radius:7px;padding:5px 11px;
}
.stars{color:var(--lilac);letter-spacing:2px;font-size:15px}

.cta{
  background:linear-gradient(135deg,var(--deep),var(--accent));
  border-radius:var(--r);padding:34px 30px;color:#fff;text-align:center;
}
.cta h2{color:#fff;margin-bottom:10px}
.cta .sub{color:#DCD6F5;font-size:15px;margin-bottom:22px}
.cta .btn.btn-primary{
  background:#fff;color:var(--deep);border-color:#fff;box-shadow:none;
}
.cta .btn.btn-primary:hover{background:var(--lilac-soft);color:var(--deep)}
.cta .cta-note{color:#DCD6F5;margin-top:16px}

.foot{background:#221C46;color:#C9C3E4;padding:40px 22px 30px;margin-top:56px}
.foot__in{max-width:var(--wrap);margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:26px}
.foot h4{font-size:15px;color:#fff;margin-bottom:12px}
.foot p{font-size:14px;color:#C9C3E4}
.foot a{color:#C9C3E4;font-size:14px;display:block;padding:4px 0}
.foot a:hover{color:#fff}
.foot__bar{
  max-width:var(--wrap);margin:26px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:#A9A2CE;
}
.foot__bar p + p{margin-top:8px}

.unveil{animation:unveil .58s cubic-bezier(.22,.72,.24,1) both}
.unveil.d1{animation-delay:.08s}
.unveil.d2{animation-delay:.16s}
@keyframes unveil{
  from{opacity:0;clip-path:inset(0 0 100% 0)}
  to{opacity:1;clip-path:inset(0 0 0 0)}
}
@media (prefers-reduced-motion:reduce){
  .unveil{animation:none;opacity:1;clip-path:none}
}

@media (min-width:1101px){
  .doc{grid-template-columns:236px minmax(0,1fr);gap:30px;align-items:start}
  .toc{position:sticky;top:88px}
  .doc__main{grid-column:2}
}

@media (max-width:1100px){
  .doc{grid-template-columns:1fr}
  .toc{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
  .toc__t{margin:0 6px 0 0}
  .toc a{border-bottom:0;background:var(--lilac-soft);border-radius:7px;padding:5px 11px;font-size:13.5px}
}

@media (max-width:980px){
  h1{font-size:29px}
  h2{font-size:22px}
  .hero__in{grid-template-columns:1fr;gap:32px;padding:40px 22px 44px}
  .hero__shot{max-width:300px}
  .stats__in{grid-template-columns:repeat(2,1fr);gap:16px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .gal{grid-template-columns:repeat(2,1fr);gap:16px}
  .foot__in{grid-template-columns:1fr 1fr;gap:22px}
  .sec{padding:44px 22px 46px}
  .args{grid-template-columns:1fr}
}

@media (max-width:620px){
  body{font-size:15.5px}
  h1{font-size:25px}
  h2{font-size:20px}
  .top__in{flex-wrap:wrap;gap:10px;padding:10px 18px}
  .brand{order:1}
  .top__in > .btn{order:2;margin-left:auto}
  .nav{order:3;flex:1 0 100%;justify-content:center;margin-left:0;gap:4px}
  .nav a{padding:6px 9px;font-size:14px}
  .sec,.stats__in,.hero__in,.foot{padding-left:18px;padding-right:18px}
  .doc{padding:0 18px}
  .cards,.gal{grid-template-columns:1fr}
  .gal img{max-width:330px}
  .hero__shot{max-width:280px}
  .prose{padding:22px 18px}
  .cta{padding:28px 20px}
  .foot__in{grid-template-columns:1fr}
  .steps li{padding-left:36px}
}