:root{
--bg:#EFF2F8;
--bg2:#E4E9F5;
--card:#FFFFFF;
--line:#D3DCEC;
--ink:#101A33;
--ink2:#46527A;
--ink3:#7B87A1;
--brand:#2B4BD8;
--brand2:#4E6BF0;
--deep:#111C3A;
--deep2:#1B2A55;
--accent:#F2C230;
--accent2:#FFDE7A;
--star:#C08A00;
--shadow:0 12px 28px rgba(24,40,90,.09);
--r:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
margin:0;
font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
font-size:16px;
line-height:1.75;
color:var(--ink);
background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35}
figure,figcaption,blockquote,dl,dd,table,fieldset{margin:0}
button{font:inherit}
summary{list-style:none;cursor:pointer}
summary::-webkit-details-marker{display:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}

.btn{
display:inline-flex;
align-items:center;
justify-content:center;
gap:8px;
padding:11px 22px;
border-radius:999px;
font-size:15px;
font-weight:700;
white-space:nowrap;
border:1px solid transparent;
transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
}
.btn.btn-primary{
color:#fff;
background:linear-gradient(90deg,var(--brand),var(--brand2));
box-shadow:0 10px 22px rgba(43,75,216,.28);
}
.btn.btn-primary:hover{
color:#fff;
background:linear-gradient(90deg,var(--deep2),var(--brand));
transform:translateY(-2px);
}
.btn.btn-ghost{
color:var(--ink);
background:#fff;
border-color:var(--line);
}
.btn.btn-ghost:hover{
color:var(--brand);
background:#F5F7FE;
border-color:var(--brand2);
transform:translateY(-2px);
}

.top{
position:sticky;
top:0;
z-index:50;
background:rgba(255,255,255,.94);
backdrop-filter:blur(10px);
border-bottom:1px solid var(--line);
}
.top__in{
display:flex;
align-items:center;
gap:18px;
padding:12px 22px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{width:40px;height:40px;border-radius:11px}
.brand__name{font-size:20px;font-weight:700;letter-spacing:.5px}
.nav{
display:flex;
align-items:center;
gap:4px;
margin-left:auto;
flex-wrap:wrap;
}
.nav a{
display:inline-block;
padding:8px 12px;
border-radius:10px;
font-size:15px;
color:var(--ink2);
}
.nav a:hover{color:var(--brand);background:#F2F5FE}
.nav a[aria-current="page"]{color:var(--brand);font-weight:700;background:#EDF1FE}

.hero{
position:relative;
background:var(--deep);
color:#fff;
overflow:hidden;
}
.hero::before{
content:"";
position:absolute;
inset:0;
background-image:
linear-gradient(rgba(78,107,240,.18) 1px,transparent 1px),
linear-gradient(90deg,rgba(78,107,240,.18) 1px,transparent 1px);
background-size:36px 36px;
pointer-events:none;
}
.hero::after{
content:"";
position:absolute;
top:-160px;
right:-140px;
width:460px;
height:460px;
border-radius:50%;
background:radial-gradient(circle,rgba(78,107,240,.55),rgba(17,28,58,0) 68%);
pointer-events:none;
}
.hero__in{
position:relative;
z-index:1;
display:grid;
grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
gap:40px;
align-items:center;
padding:66px 22px 70px;
}
.kicker{
display:inline-block;
font-size:13px;
letter-spacing:2px;
color:var(--accent);
border:1px solid rgba(242,194,48,.45);
border-radius:999px;
padding:4px 14px;
margin-bottom:18px;
}
.hero h1{
font-size:clamp(30px,4.6vw,44px);
letter-spacing:1px;
}
.hero__lead{
margin-top:18px;
max-width:36em;
font-size:16.5px;
color:rgba(255,255,255,.8);
}
.hero__acts{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero__shot{
max-width:300px;
margin:0 auto;
width:100%;
animation:riseIn .7s .18s both;
}
.shot{
background:#fff;
border:1px solid var(--line);
border-radius:18px;
padding:12px;
box-shadow:0 24px 48px rgba(6,12,34,.34);
display:flex;
flex-direction:column;
gap:10px;
min-width:0;
}
.shot img{
width:100%;
max-width:340px;
height:auto;
margin:0 auto;
border-radius:11px;
}
.shot__cap{
font-size:13px;
line-height:1.6;
color:var(--ink3);
text-align:center;
}

.band{background:var(--deep2);color:#fff}
.band__in{
display:grid;
grid-template-columns:repeat(4,minmax(0,1fr));
padding:0 22px;
}
.stat{
padding:24px 20px;
border-left:1px solid rgba(255,255,255,.14);
}
.stat:first-child{border-left:0}
.stat__num{
font-size:26px;
font-weight:700;
color:var(--accent);
letter-spacing:.5px;
}
.stat__label{margin-top:4px;font-size:14px;color:rgba(255,255,255,.72)}

.sec{padding:66px 0}
.sec--tint{background:var(--bg2)}
.sec__head{max-width:780px;margin-bottom:32px}
.sec__head h2{
position:relative;
padding-left:17px;
font-size:26px;
letter-spacing:.5px;
}
.sec__head h2::before{
content:"";
position:absolute;
left:0;
top:.16em;
width:7px;
height:1.05em;
border-radius:4px;
background:linear-gradient(180deg,var(--brand),var(--accent));
}
.sub{margin-top:12px;font-size:15.5px;color:var(--ink2)}
.lede{font-size:16px;color:var(--ink2);max-width:62em}
.sec__foot{margin-top:24px}

.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:8px}
.cards>*{min-width:0}
.card{
background:var(--card);
border:1px solid var(--line);
border-radius:var(--r);
overflow:hidden;
display:flex;
flex-direction:column;
min-width:0;
}
.card__head{
background:linear-gradient(90deg,var(--deep2),var(--brand));
color:#fff;
font-size:15.5px;
font-weight:700;
padding:11px 17px;
letter-spacing:.5px;
}
.card__body{padding:17px 19px 21px;font-size:15px;color:var(--ink2)}

.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.steps>*{min-width:0}
.step{
background:#fff;
border:1px solid var(--line);
border-radius:var(--r);
padding:22px 20px;
display:flex;
flex-direction:column;
gap:10px;
min-width:0;
}
.step__n{
width:32px;
height:32px;
border-radius:10px;
background:var(--accent);
color:#3B2B00;
font-weight:700;
font-size:15px;
display:flex;
align-items:center;
justify-content:center;
}
.step__t{font-size:16.5px}
.step__d{font-size:14.5px;color:var(--ink2)}

.shots{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:8px}
.shots>*{min-width:0}

.quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.quotes>*{min-width:0}
.quote{
background:#fff;
border:1px solid var(--line);
border-radius:var(--r);
padding:24px 22px;
display:flex;
flex-direction:column;
gap:14px;
min-width:0;
}
.quote__stars{color:var(--star);letter-spacing:3px;font-size:15px}
.quote__text{font-size:15px;color:var(--ink2)}
.quote__meta{
margin-top:auto;
padding-top:12px;
border-top:1px dashed var(--line);
font-size:13.5px;
color:var(--ink3);
}

.qa{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:8px}
.qa>*{min-width:0}
.qa details{
background:#fff;
border:1px solid var(--line);
border-radius:12px;
padding:0 20px;
}
.qa summary{
position:relative;
padding:16px 30px 16px 0;
font-size:15.5px;
font-weight:700;
color:var(--ink);
}
.qa summary::after{
content:"+";
position:absolute;
right:0;
top:15px;
color:var(--brand);
font-weight:700;
font-size:19px;
line-height:1;
}
.qa details[open] summary::after{content:"−"}
.qa .qa__a{padding:0 0 18px;font-size:15px;color:var(--ink2)}

.entries{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.entries>*{min-width:0}
.entry{
background:#fff;
border:1px solid var(--line);
border-radius:var(--r);
padding:22px 22px 18px;
display:flex;
flex-direction:column;
gap:12px;
min-width:0;
transition:border-color .18s ease,box-shadow .18s ease;
}
.entry:hover{border-color:var(--brand2);box-shadow:var(--shadow)}
.entry__title{font-size:17.5px}
.entry__desc{font-size:14.5px;color:var(--ink2)}
.entry__more{
margin-top:auto;
padding-top:12px;
border-top:1px dashed var(--line);
font-size:14px;
font-weight:700;
color:var(--brand);
}

.cta{background:var(--deep);color:#fff;padding:64px 0}
.cta__box{
display:grid;
grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);
gap:30px;
align-items:center;
}
.cta h2{font-size:26px;letter-spacing:.5px}
.cta__lead{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.76)}
.cta__acts{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta .btn.btn-primary{
color:#2A1F00;
background:linear-gradient(90deg,var(--accent),var(--accent2));
box-shadow:0 10px 22px rgba(242,194,48,.24);
}
.cta .btn.btn-primary:hover{
color:#2A1F00;
background:linear-gradient(90deg,var(--accent2),#FFF0BE);
}
.cta .btn.btn-ghost{
color:#fff;
background:transparent;
border-color:rgba(255,255,255,.42);
}
.cta .btn.btn-ghost:hover{
color:var(--deep);
background:#fff;
border-color:#fff;
}

.page-hero{
background:var(--deep);
color:#fff;
position:relative;
overflow:hidden;
}
.page-hero::before{
content:"";
position:absolute;
inset:0;
background-image:
linear-gradient(rgba(78,107,240,.16) 1px,transparent 1px),
linear-gradient(90deg,rgba(78,107,240,.16) 1px,transparent 1px);
background-size:36px 36px;
pointer-events:none;
}
.page-hero__in{position:relative;z-index:1;padding:54px 22px 48px}
.page-hero h1{font-size:clamp(26px,3.6vw,36px);letter-spacing:1px}
.page-hero__lead{
margin-top:16px;
max-width:46em;
font-size:15.5px;
color:rgba(255,255,255,.78);
}

.layout{
display:grid;
grid-template-columns:248px minmax(0,1fr);
gap:38px;
align-items:start;
}
.layout>*{min-width:0}
.toc{
position:sticky;
top:86px;
background:#fff;
border:1px solid var(--line);
border-radius:var(--r);
padding:20px 18px;
}
.toc__title{
font-size:13px;
letter-spacing:2px;
color:var(--ink3);
margin-bottom:12px;
}
.toc__list a{
display:block;
padding:7px 0 7px 12px;
font-size:14.5px;
color:var(--ink2);
border-left:2px solid transparent;
}
.toc__list a:hover{color:var(--brand)}
.toc__list a[aria-current="true"]{
color:var(--brand);
font-weight:700;
border-left-color:var(--brand);
background:linear-gradient(90deg,#F0F4FE,rgba(240,244,254,0));
}

.doc{display:flex;flex-direction:column;gap:24px}
.prose{
background:#fff;
border:1px solid var(--line);
border-radius:16px;
padding:30px 32px 34px;
}
.prose h2{
position:relative;
padding-left:16px;
font-size:22px;
margin-bottom:16px;
}
.prose h2::before{
content:"";
position:absolute;
left:0;
top:.16em;
width:6px;
height:1.05em;
border-radius:4px;
background:linear-gradient(180deg,var(--brand),var(--accent));
}
.prose p{margin:0 0 15px;font-size:15.5px;color:#3B4666;line-height:1.85}
.prose p:last-child{margin-bottom:0}
.prose ul{margin:0 0 16px}
.prose ul li{
position:relative;
padding-left:18px;
margin-bottom:9px;
font-size:15.5px;
color:#3B4666;
line-height:1.8;
}
.prose ul li::before{
content:"";
position:absolute;
left:0;
top:.66em;
width:6px;
height:6px;
border-radius:2px;
background:var(--brand);
}
.prose__note{
margin-top:20px;
padding:15px 18px;
border-radius:12px;
background:var(--bg2);
font-size:14.5px;
color:var(--ink2);
border-left:4px solid var(--accent);
}

.figure{
max-width:400px;
margin:22px auto 6px;
display:flex;
flex-direction:column;
gap:10px;
}
.figure img{
width:100%;
max-width:400px;
height:auto;
margin:0 auto;
border-radius:14px;
box-shadow:var(--shadow);
}
.figure figcaption{
font-size:13.5px;
line-height:1.65;
color:var(--ink3);
text-align:center;
}

.tags{display:flex;flex-wrap:wrap;gap:10px;margin:4px 0 18px}
.tag{
display:inline-block;
padding:5px 14px;
border-radius:999px;
font-size:14px;
background:#fff;
border:1px solid var(--line);
color:var(--ink2);
}

.foot{
background:var(--deep);
color:rgba(255,255,255,.72);
padding:56px 0 28px;
font-size:14px;
}
.foot__in{
display:grid;
grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1.15fr);
gap:30px;
}
.foot__brand{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.foot__brand img{width:34px;height:34px;border-radius:9px}
.foot__brand strong{color:#fff;font-size:17px}
.foot__brand p{flex:1 0 100%;margin-top:8px;line-height:1.85}
.foot h3{color:#fff;font-size:15px;margin-bottom:12px}
.foot__nav a{display:block;padding:5px 0;color:rgba(255,255,255,.72)}
.foot__nav a:hover{color:#fff}
.foot__cta{display:block}
.foot__cta p{line-height:1.85;margin-bottom:14px}
.foot .btn.btn-primary{
display:inline-flex;
padding:10px 20px;
color:#2A1F00;
background:linear-gradient(90deg,var(--accent),var(--accent2));
box-shadow:none;
}
.foot .btn.btn-primary:hover{
color:#2A1F00;
background:linear-gradient(90deg,var(--accent2),#FFF0BE);
}
.foot__disc{
grid-column:1/-1;
margin-top:14px;
padding-top:20px;
border-top:1px solid rgba(255,255,255,.14);
display:flex;
flex-wrap:wrap;
gap:8px 22px;
justify-content:space-between;
font-size:13px;
color:rgba(255,255,255,.6);
}
.foot__copy{color:rgba(255,255,255,.52)}

.to-top{
position:fixed;
right:18px;
bottom:18px;
width:44px;
height:44px;
border-radius:50%;
background:var(--brand);
color:#fff;
font-size:19px;
display:flex;
align-items:center;
justify-content:center;
box-shadow:0 10px 24px rgba(43,75,216,.35);
z-index:40;
}

@keyframes riseIn{
from{opacity:0;transform:translateY(16px)}
to{opacity:1;transform:translateY(0)}
}
@keyframes fadeIn{
from{opacity:0}
to{opacity:1}
}
.hero__copy,.page-hero__in{animation:riseIn .6s both}
.sec__head,.cards,.steps,.shots,.quotes,.qa,.entries,.band,.layout,.cta__box,.foot__in{
animation:fadeIn .7s both;
}

@media (max-width:980px){
.hero__in{grid-template-columns:minmax(0,1fr);padding:52px 22px 56px;gap:30px}
.hero__shot{max-width:280px}
.cards{grid-template-columns:repeat(2,minmax(0,1fr))}
.steps{grid-template-columns:repeat(2,minmax(0,1fr))}
.shots{grid-template-columns:repeat(2,minmax(0,1fr))}
.quotes{grid-template-columns:repeat(2,minmax(0,1fr))}
.entries{grid-template-columns:repeat(2,minmax(0,1fr))}
.layout{grid-template-columns:minmax(0,1fr);gap:26px}
.toc{position:static}
.cta__box{grid-template-columns:minmax(0,1fr);gap:22px}
.cta__acts{justify-content:flex-start}
.foot__in{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}

@media (max-width:620px){
.top__in{flex-wrap:wrap;gap:10px;padding:10px 22px 12px}
.brand{order:1}
.top__in>.btn.btn-primary{order:2;margin-left:auto;padding:9px 16px;font-size:14px}
.nav{
order:3;
flex:1 0 100%;
margin-left:0;
justify-content:center;
gap:2px;
}
.nav a{padding:7px 9px;font-size:14px}
.band__in{grid-template-columns:repeat(2,minmax(0,1fr))}
.stat{padding:18px 16px}
.stat:nth-child(3){border-left:0}
.cards,.steps,.shots,.quotes,.entries,.qa{grid-template-columns:minmax(0,1fr)}
.sec{padding:48px 0}
.sec__head h2{font-size:22px}
.prose{padding:22px 20px 26px}
.prose h2{font-size:19.5px}
.page-hero__in{padding:40px 22px 36px}
.hero__shot{max-width:260px}
.cta{padding:48px 0}
.cta h2{font-size:21px}
.foot{padding:44px 0 24px}
.foot__in{grid-template-columns:minmax(0,1fr);gap:22px}
.to-top{right:12px;bottom:12px;width:40px;height:40px}
}