/* roulang page: index */
:root{
  --c-primary:#2F6BFF;
  --c-primary-deep:#1450D8;
  --c-accent:#14C8A6;
  --c-spark:#FF7A3D;
  --c-bg:#F6F9FE;
  --c-bg-2:#EAF1FF;
  --c-surface:#FFFFFF;
  --c-line:#E6EDF7;
  --c-text:#0F1B2D;
  --c-text-2:#4A5B73;
  --c-text-3:#8A98AC;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(19,64,133,.06);
  --sh-2:0 12px 32px rgba(19,64,133,.12);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text-2);
  background:var(--c-bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  padding-bottom:76px;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-primary-deep);}
img{max-width:100%;display:block;border-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{color:var(--c-text);font-weight:700;line-height:1.3;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:4px;}

/* ---------- 容器 ---------- */
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;}
@media screen and (min-width:1280px){
  .grid-container{max-width:1280px;}
}
@media screen and (max-width:767px){
  .grid-container{padding-left:20px;padding-right:20px;}
}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;letter-spacing:.2px;white-space:nowrap;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  border:1.5px solid transparent;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(47,107,255,.22);}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(19,64,133,.22);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:rgba(47,107,255,.08);color:var(--c-primary-deep);border-color:var(--c-primary-deep);}
.btn-light{background:#fff;color:var(--c-primary);border-color:#fff;box-shadow:var(--sh-1);}
.btn-light:hover{background:#F0F5FF;color:var(--c-primary-deep);transform:translateY(-1px);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px;position:relative;}
.btn-text i{font-size:12px;transition:transform .22s ease;}
.btn-text::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:2px;background:var(--c-primary);transition:width .25s ease;}
.btn-text:hover::after{width:100%;}
.btn-text:hover i{transform:translateX(3px);}
.btn-block{width:100%;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;border:1px solid rgba(20,200,166,.55);
  color:#0E9E82;background:rgba(20,200,166,.08);
  font-size:13px;font-weight:500;line-height:1.6;
}
.badge-blue{border-color:rgba(47,107,255,.45);color:var(--c-primary);background:rgba(47,107,255,.08);}
.badge-spark{border-color:rgba(255,122,61,.5);color:#D9560F;background:rgba(255,122,61,.1);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--c-line);
}
.nav-bar{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#2F6BFF 0%,#14C8A6 130%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:-.5px;
  box-shadow:0 6px 14px rgba(47,107,255,.28);
}
.brand-text{font-size:20px;font-weight:700;color:var(--c-text);letter-spacing:.2px;}
.brand-text span{color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;}
.nav-link{
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--c-text-2);white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--c-primary);background:rgba(47,107,255,.07);}
.nav-link.is-active{color:var(--c-primary);background:rgba(47,107,255,.1);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search i{position:absolute;left:12px;font-size:13px;color:var(--c-text-3);pointer-events:none;}
.nav-search input{
  width:236px;height:36px;border-radius:999px;
  border:1px solid var(--c-line);background:#fff;
  padding:0 14px 0 34px;font-size:14px;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,107,255,.12);}
.nav-login{font-size:15px;font-weight:500;color:var(--c-text-2);padding:8px 6px;}
.nav-login:hover{color:var(--c-primary);}
.nav-cta{height:40px;padding:0 20px;font-size:15px;border-radius:var(--r-btn);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  align-items:center;justify-content:center;
  color:var(--c-text);font-size:18px;border:1px solid var(--c-line);background:#fff;
}
.nav-toggle:hover{color:var(--c-primary);border-color:var(--c-primary);}
@media screen and (max-width:1023px){
  .nav-links,.nav-search,.nav-login{display:none;}
  .nav-bar{height:60px;gap:12px;}
  .nav-toggle{display:inline-flex;}
  .nav-right .nav-cta{display:none;}
}
/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.42);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:298px;max-width:86vw;
  background:#fff;z-index:90;padding:24px 22px;
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  box-shadow:-10px 0 34px rgba(15,27,45,.14);
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);color:var(--c-text-2);}
.drawer-close:hover{color:var(--c-primary);border-color:var(--c-primary);}
.drawer a.drawer-link{
  padding:13px 12px;border-radius:10px;color:var(--c-text-2);font-size:16px;font-weight:500;
}
.drawer a.drawer-link:hover{background:var(--c-bg);color:var(--c-primary);}
.drawer a.drawer-link.is-active{background:rgba(47,107,255,.1);color:var(--c-primary);font-weight:600;}
.drawer .btn{margin-top:14px;}
.drawer-search{position:relative;margin-bottom:10px;}
.drawer-search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--c-text-3);font-size:13px;}
.drawer-search input{
  width:100%;height:42px;border-radius:10px;border:1px solid var(--c-line);
  padding:0 14px 0 36px;font-size:15px;
}
.drawer-search input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,107,255,.12);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:linear-gradient(160deg,#F6F9FE 0%,#EAF1FF 100%);
  padding:76px 0 72px;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,200,166,.16),rgba(20,200,166,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;gap:56px;}
.hero-copy{flex:1 1 52%;min-width:0;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--c-line);
  color:var(--c-primary);font-size:13px;font-weight:600;box-shadow:var(--sh-1);margin-bottom:20px;
}
.hero-tag i{color:var(--c-accent);}
.hero-title{
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:700;color:var(--c-text);
  letter-spacing:-.4px;margin-bottom:18px;
}
.hero-title em{font-style:normal;color:var(--c-primary);position:relative;}
.hero-title em::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:8px;
  background:rgba(20,200,166,.22);border-radius:4px;z-index:-1;
}
.hero-sub{font-size:18px;line-height:1.7;color:var(--c-text-2);max-width:520px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-trust{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:14px;color:var(--c-text-2);}
.hero-trust span{display:inline-flex;align-items:center;gap:7px;}
.hero-trust i{color:var(--c-accent);font-size:13px;}
.hero-trust .sep{width:1px;height:14px;background:var(--c-line);}
.hero-media{flex:1 1 48%;min-width:0;position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;
  border:1px solid rgba(255,255,255,.9);box-shadow:var(--sh-2);
}
.hero-media::before{
  content:"";position:absolute;inset:0;border-radius:16px;
  background:linear-gradient(180deg,rgba(47,107,255,.05),rgba(47,107,255,.16));
  pointer-events:none;
}
.hero-float{
  position:absolute;left:-18px;bottom:26px;background:#fff;border-radius:12px;
  padding:14px 18px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px;
}
.hero-float .num{font-size:24px;font-weight:700;color:var(--c-primary);line-height:1;}
.hero-float .txt{font-size:13px;color:var(--c-text-3);line-height:1.4;}
@media screen and (max-width:1023px){
  .hero-inner{flex-direction:column;gap:36px;}
  .hero-copy,.hero-media{flex:1 1 100%;}
  .hero{padding:56px 0 56px;}
  .hero-cta .btn{flex:1 1 auto;}
  .hero-float{left:12px;bottom:12px;padding:12px 14px;}
}
@media screen and (max-width:639px){
  .hero-cta .btn{width:100%;}
  .hero-trust .sep{display:none;}
}

/* ---------- 信任数据条 ---------- */
.stats-strip{background:#fff;border-bottom:1px solid var(--c-line);padding:34px 0;}
.stats-grid{display:flex;flex-wrap:wrap;gap:20px;}
.stat-item{
  flex:1 1 200px;min-width:0;display:flex;align-items:flex-start;gap:14px;
  padding:4px 6px;
}
.stat-item + .stat-item{border-left:1px solid var(--c-line);padding-left:24px;}
.stat-icon{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  background:rgba(47,107,255,.08);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.stat-num{font-size:22px;font-weight:700;color:var(--c-text);line-height:1.2;}
.stat-label{font-size:13px;color:var(--c-text-3);line-height:1.6;margin-top:2px;}
@media screen and (max-width:767px){
  .stat-item + .stat-item{border-left:0;padding-left:6px;border-top:1px solid var(--c-line);padding-top:16px;}
}

/* ---------- 板块骨架 ---------- */
.sec{padding:96px 0;}
.sec-bg{background:var(--c-bg);}
.sec-head{margin-bottom:44px;max-width:760px;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:1px;text-transform:uppercase;
  margin-bottom:12px;
}
.sec-kicker::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px;}
.sec-title{font-size:clamp(24px,3vw,32px);line-height:1.3;color:var(--c-text);margin-bottom:12px;}
.sec-desc{font-size:16px;color:var(--c-text-2);line-height:1.8;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
@media screen and (max-width:767px){
  .sec{padding:56px 0;}
  .sec-head{margin-bottom:30px;}
  .sec-head-row{flex-direction:column;align-items:flex-start;}
}

/* ---------- 卖点三连（非对称） ---------- */
.feat-row{display:flex;gap:24px;align-items:stretch;}
.feat-main{
  flex:1 1 50%;min-width:0;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:34px 32px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow .3s ease,transform .3s ease;
}
.feat-main:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.feat-side{flex:1 1 50%;min-width:0;display:flex;flex-direction:column;gap:24px;}
.feat-card{
  flex:1 1 auto;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 26px;box-shadow:var(--sh-1);display:flex;gap:18px;align-items:flex-start;
  transition:box-shadow .3s ease,transform .3s ease;
}
.feat-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.icon-box{
  width:46px;height:46px;flex:0 0 46px;border-radius:12px;
  background:rgba(47,107,255,.08);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:19px;
}
.icon-box.green{background:rgba(20,200,166,.1);color:#0E9E82;}
.feat-main h3{font-size:22px;margin:20px 0 12px;}
.feat-card h3{font-size:19px;margin-bottom:8px;}
.feat-main p,.feat-card p{font-size:15px;line-height:1.8;color:var(--c-text-2);}
.feat-main .btn-text{margin-top:auto;padding-top:22px;}
.feat-main .feat-flow{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 6px;}
.feat-flow span{
  font-size:13px;color:var(--c-text-2);background:var(--c-bg);
  border:1px solid var(--c-line);border-radius:999px;padding:4px 12px;
}
@media screen and (max-width:1023px){
  .feat-row{flex-direction:column;}
  .feat-main,.feat-side{flex:1 1 100%;}
}

/* ---------- 场景演示 ---------- */
.scene-row{display:flex;align-items:center;gap:56px;padding:40px 0;}
.scene-row + .scene-row{border-top:1px solid var(--c-line);}
.scene-row.reverse{flex-direction:row-reverse;}
.scene-media{flex:1 1 48%;min-width:0;}
.scene-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--c-line);
  transition:transform .24s ease;
}
.scene-media:hover img{transform:scale(1.03);}
.scene-media{overflow:hidden;border-radius:var(--r-img);}
.scene-copy{flex:1 1 52%;min-width:0;}
.scene-copy h3{font-size:22px;margin-bottom:14px;}
.scene-copy p{font-size:16px;line-height:1.85;color:var(--c-text-2);margin-bottom:18px;}
.dot-list li{position:relative;padding:6px 0 6px 20px;font-size:15px;color:var(--c-text-2);}
.dot-list li::before{
  content:"";position:absolute;left:0;top:16px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.scene-copy .btn-text{margin-top:12px;}
@media screen and (max-width:1023px){
  .scene-row,.scene-row.reverse{flex-direction:column;gap:24px;padding:32px 0;}
  .scene-media,.scene-copy{flex:1 1 100%;}
}

/* ---------- 资讯列表（CMS 注入区） ---------- */
.news-grid{display:flex;flex-wrap:wrap;gap:24px;}
.news-card{
  flex:1 1 calc(33.333% - 16px);max-width:calc(33.333% - 16px);min-width:0;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .3s ease,transform .3s ease;
}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.news-link{display:block;height:100%;color:inherit;}
.news-link:hover{color:inherit;}
.news-cover{position:relative;aspect-ratio:16/9;background:var(--c-bg);overflow:hidden;}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease;}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;height:calc(100% - 1px);}
.news-title{
  font-size:18px;line-height:1.5;font-weight:600;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s ease;
}
.news-card:hover .news-title{color:var(--c-primary);}
.news-sum{
  font-size:15px;line-height:1.7;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-text-3);
}
.news-meta i{margin-right:5px;font-size:12px;}
.empty-state{
  width:100%;text-align:center;padding:64px 24px;background:#fff;
  border:1px dashed var(--c-line);border-radius:var(--r-card);
}
.empty-state i{font-size:32px;color:var(--c-text-3);margin-bottom:16px;display:block;}
.empty-state p{font-size:16px;color:var(--c-text-2);margin-bottom:14px;}
@media screen and (max-width:1023px){
  .news-card{flex:1 1 calc(50% - 12px);max-width:calc(50% - 12px);}
}
@media screen and (max-width:639px){
  .news-card{flex:1 1 100%;max-width:100%;}
}

/* ---------- 社会认同 ---------- */
.voice-row{display:flex;gap:24px;align-items:stretch;}
.voice-card{
  flex:0 0 33.333%;min-width:0;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:30px 28px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:16px;
}
.voice-card .quote-mark{font-size:26px;color:var(--c-accent);line-height:1;}
.voice-card p{font-size:15px;line-height:1.85;color:var(--c-text-2);}
.voice-who{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);}
.voice-avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 38px;
  background:linear-gradient(135deg,#EAF1FF,#DCE9FF);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
}
.voice-who .name{font-size:14px;font-weight:600;color:var(--c-text);}
.voice-who .role{font-size:13px;color:var(--c-text-3);}
.data-panel{
  flex:1 1 auto;min-width:0;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);
}
.data-panel h3{font-size:20px;margin-bottom:10px;}
.data-panel > p{font-size:15px;color:var(--c-text-2);margin-bottom:24px;}
.bar-item{margin-bottom:20px;}
.bar-item:last-child{margin-bottom:0;}
.bar-top{display:flex;justify-content:space-between;font-size:14px;color:var(--c-text-2);margin-bottom:8px;}
.bar-top strong{color:var(--c-text);font-weight:600;}
.bar-track{height:8px;border-radius:999px;background:var(--c-bg);overflow:hidden;}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#2F6BFF,#14C8A6);}
@media screen and (max-width:1023px){
  .voice-row{flex-direction:column;}
  .voice-card{flex:1 1 100%;}
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-list .accordion{background:transparent;border:0;margin:0;}
.faq-list .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line);}
.faq-list .accordion-item:first-child{border-top:1px solid var(--c-line);}
.faq-list .accordion-title{
  border:0;background:transparent;padding:22px 48px 22px 0;position:relative;
  font-size:18px;font-weight:600;color:var(--c-text);line-height:1.5;
  transition:color .2s ease;
}
.faq-list .accordion-title:hover{color:var(--c-primary);}
.faq-list .accordion-title::before{
  content:"+";position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:24px;font-weight:400;color:var(--c-primary);background:none;
  width:auto;height:auto;margin:0;line-height:1;
  transition:transform .25s ease;
}
.faq-list .accordion-item.is-active .accordion-title::before{content:"−";}
.faq-list .accordion-content{
  border:0;background:transparent;padding:0 48px 24px 0;
  font-size:15px;line-height:1.85;color:var(--c-text-2);
}
@media screen and (max-width:639px){
  .faq-list .accordion-title{font-size:16px;padding-right:40px;}
  .faq-list .accordion-content{padding-right:10px;}
}

/* ---------- 尾部 CTA ---------- */
.cta-panel{
  background:linear-gradient(135deg,#2F6BFF 0%,#1E56E0 55%,#0F8F86 130%);
  border-radius:20px;padding:56px 52px;color:#fff;position:relative;overflow:hidden;
}
.cta-panel::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:rgba(255,255,255,.1);
}
.cta-inner{position:relative;z-index:2;display:flex;gap:48px;align-items:center;}
.cta-text{flex:1 1 54%;min-width:0;}
.cta-text h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.3;margin-bottom:14px;}
.cta-text p{font-size:16px;line-height:1.8;color:rgba(255,255,255,.88);}
.cta-form{flex:1 1 46%;min-width:0;}
.cta-form .field{margin-bottom:14px;}
.cta-form label{display:block;font-size:14px;font-weight:600;color:#fff;margin-bottom:8px;}
.cta-form input{
  width:100%;height:48px;border-radius:10px;border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.14);color:#fff;padding:0 16px;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.6);}
.cta-form input:focus{outline:none;border-color:#fff;background:rgba(255,255,255,.2);box-shadow:0 0 0 3px rgba(255,255,255,.22);}
.cta-form .hint{font-size:13px;color:rgba(255,255,255,.72);margin-top:10px;line-height:1.6;}
.cta-form .btn-light{margin-top:6px;}
@media screen and (max-width:1023px){
  .cta-inner{flex-direction:column;gap:28px;}
  .cta-panel{padding:40px 26px;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#F2F6FC;border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:0;}
.foot-grid{display:flex;flex-wrap:wrap;gap:40px;}
.foot-col{flex:1 1 200px;min-width:0;}
.foot-col.brand-col{flex:1 1 280px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-about{font-size:14px;line-height:1.8;color:var(--c-text-2);margin-bottom:18px;}
.foot-social{display:flex;gap:10px;}
.foot-social a{
  width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-text-2);font-size:15px;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.foot-social a:hover{color:var(--c-primary);border-color:var(--c-primary);transform:translateY(-2px);}
.foot-title{font-size:15px;font-weight:700;color:var(--c-text);margin-bottom:18px;}
.foot-list li{margin-bottom:11px;}
.foot-list a{font-size:14px;color:var(--c-text-2);}
.foot-list a:hover{color:var(--c-primary);}
.foot-contact li{font-size:14px;color:var(--c-text-2);margin-bottom:11px;display:flex;gap:9px;align-items:flex-start;}
.foot-contact i{color:var(--c-primary);font-size:13px;margin-top:5px;}
.foot-bottom{
  margin-top:52px;border-top:1px solid var(--c-line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}
.foot-bottom a{color:var(--c-text-3);}
.foot-bottom a:hover{color:var(--c-primary);}
@media screen and (max-width:767px){
  .site-footer{padding-top:44px;}
  .foot-grid{gap:28px;}
  .foot-col,.foot-col.brand-col{flex:1 1 100%;}
}

/* ---------- 底部固定转化条 ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);
  border-top:1px solid rgba(47,107,255,.2);
  box-shadow:0 -8px 24px rgba(19,64,133,.08);
  transform:translateY(110%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.show{transform:translateY(0);}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
.sticky-text{font-size:15px;font-weight:600;color:var(--c-text);display:flex;align-items:center;gap:10px;}
.sticky-text i{color:var(--c-accent);}
.sticky-actions{display:flex;align-items:center;gap:12px;}
.sticky-actions .btn{height:44px;padding:0 24px;font-size:15px;}
.sticky-actions .link-quiet{font-size:14px;color:var(--c-text-2);}
.sticky-actions .link-quiet:hover{color:var(--c-primary);}
@media screen and (max-width:767px){
  body{padding-bottom:72px;}
  .sticky-inner{height:60px;gap:10px;}
  .sticky-text{font-size:13px;}
  .sticky-text .long{display:none;}
  .sticky-actions .link-quiet{display:none;}
  .sticky-actions .btn{height:40px;padding:0 18px;font-size:14px;}
}

/* roulang page: article */
:root{
  --c-primary:#2F6BFF;
  --c-primary-deep:#1450D8;
  --c-accent:#14C8A6;
  --c-spark:#FF7A3D;
  --c-bg:#F6F9FE;
  --c-surface:#FFFFFF;
  --c-line:#E6EDF7;
  --c-text:#0F1B2D;
  --c-text-2:#4A5B73;
  --c-text-3:#8A98AC;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,27,45,.04),0 8px 24px rgba(19,64,133,.06);
  --sh-2:0 12px 32px rgba(19,64,133,.12);
  --w-container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-bottom:64px;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.2em;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-deep);}
img{max-width:100%;display:block;border:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

.grid-container{max-width:var(--w-container);margin:0 auto;padding-left:32px;padding-right:32px;}
@media (min-width:1280px){ .grid-container{max-width:1280px;} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;transition:background-color .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(47,107,255,.24);}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 26px rgba(20,80,216,.3);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:rgba(47,107,255,.08);color:var(--c-primary-deep);border-color:var(--c-primary-deep);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-lg{height:52px;padding:0 34px;font-size:16px;}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line);}
.nav-bar{display:flex;align-items:center;gap:22px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--c-primary),#5B8DFF);
  color:#fff;font-weight:700;font-size:17px;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(47,107,255,.28);
}
.brand-text{font-size:19px;font-weight:700;color:var(--c-text);letter-spacing:.2px;}
.brand-text span{color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;min-width:0;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:36px;padding:0 14px;
  border-radius:999px;font-size:15px;font-weight:500;color:var(--c-text-2);white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:rgba(47,107,255,.06);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;background:rgba(47,107,255,.09);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search i{position:absolute;left:12px;font-size:13px;color:var(--c-text-3);pointer-events:none;}
.nav-search input{
  width:236px;height:36px;border-radius:999px;border:1px solid var(--c-line);
  background:#F4F8FF;padding:0 14px 0 34px;font-size:14px;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,107,255,.12);}
.nav-login{font-size:15px;font-weight:500;color:var(--c-text-2);padding:0 4px;}
.nav-login:hover{color:var(--c-primary);}
.nav-cta{height:40px;padding:0 22px;font-size:14px;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-text);font-size:16px;cursor:pointer;transition:all .2s ease;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ---------- 阅读进度 ---------- */
.read-progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));z-index:80;transition:width .12s linear;}

/* ---------- 主体 ---------- */
.page-main{padding-bottom:80px;}
.crumb-bar{background:#fff;border-bottom:1px solid var(--c-line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:14px;color:var(--c-text-3);}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C7D3E4;}
.crumb .current{color:var(--c-text-3);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.art-head{padding:44px 0 32px;}
.art-badges{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;}
.badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 14px;border-radius:999px;font-size:13px;font-weight:500;line-height:1;}
.badge-accent{color:#0E9C81;background:rgba(20,200,166,.12);border:1px solid rgba(20,200,166,.4);}
.badge-soft{color:var(--c-primary);background:rgba(47,107,255,.1);}
.badge-spark{color:#D9541B;background:rgba(255,122,61,.14);}
.art-title{font-size:34px;line-height:1.3;font-weight:700;color:var(--c-text);letter-spacing:-.2px;max-width:900px;}
.art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;font-size:14px;color:var(--c-text-3);}
.art-meta span{display:inline-flex;align-items:center;gap:7px;}
.art-meta i{color:var(--c-primary);font-size:13px;}

.art-layout{display:block;}
.art-body-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:44px 52px;
}
.art-inner{max-width:800px;margin:0 auto;}

.article-content{font-size:16px;line-height:1.88;color:var(--c-text-2);}
.article-content h2{font-size:25px;line-height:1.4;font-weight:700;color:var(--c-text);margin:38px 0 16px;padding-left:14px;border-left:3px solid var(--c-primary);}
.article-content h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--c-text);margin:28px 0 12px;}
.article-content h4{font-size:17px;font-weight:600;color:var(--c-text);margin:22px 0 10px;}
.article-content p{margin:0 0 20px;}
.article-content ul,.article-content ol{margin:0 0 22px;padding-left:22px;}
.article-content li{margin-bottom:10px;}
.article-content ul li::marker{color:var(--c-primary);}
.article-content ol li::marker{color:var(--c-primary);font-weight:600;}
.article-content a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-content strong{color:var(--c-text);font-weight:600;}
.article-content blockquote{
  margin:26px 0;padding:18px 24px;background:#F1F6FF;border-left:3px solid var(--c-primary);
  border-radius:0 12px 12px 0;color:var(--c-text);font-size:15.5px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{max-width:100%;height:auto;border-radius:var(--r-img);margin:24px auto;border:1px solid var(--c-line);}
.article-content figure{margin:28px 0;}
.article-content figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px;}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-content thead th{background:#F1F6FF;color:var(--c-text);font-weight:600;text-align:left;padding:12px 14px;border-bottom:1px solid var(--c-line);}
.article-content td{padding:12px 14px;border-bottom:1px solid var(--c-line);}
.article-content hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}

.art-empty{text-align:center;padding:56px 20px;}
.art-empty i{font-size:40px;color:var(--c-primary);opacity:.7;}
.art-empty h3{margin:18px 0 10px;font-size:22px;font-weight:600;color:var(--c-text);}
.art-empty p{margin:0 auto 24px;max-width:460px;font-size:15px;color:var(--c-text-2);}

.art-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:26px;border-top:1px dashed var(--c-line);}
.art-tags .tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:#F4F8FF;border:1px solid var(--c-line);font-size:13px;color:var(--c-text-2);
}
.art-tags .tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:rgba(47,107,255,.06);}

.art-actions{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:34px;background:#F8FBFF;border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px 26px;
}
.art-actions .tip{font-size:15px;color:var(--c-text-2);}
.art-actions .tip strong{color:var(--c-text);}
.art-actions .acts{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0 0;}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.sec-head h2{font-size:30px;line-height:1.3;font-weight:700;color:var(--c-text);}
.sec-head p{margin-top:8px;font-size:15px;color:var(--c-text-3);}
.sec-link{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.sec-link:hover{gap:10px;}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;height:100%;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D3E1F8;}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EAF1FF;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease;}
.post-card:hover .card-media img{transform:scale(1.03);}
.card-media .card-badge{
  position:absolute;left:14px;top:14px;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:#0E9C81;border:1px solid rgba(20,200,166,.45);
  font-size:12.5px;font-weight:500;display:inline-flex;align-items:center;
}
.card-body{padding:24px 24px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-title{font-size:18px;line-height:1.5;font-weight:600;color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover .card-title{color:var(--c-primary);}
.card-excerpt{margin-top:10px;font-size:14.5px;line-height:1.7;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-text-3);}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  margin-top:80px;border-radius:18px;overflow:hidden;position:relative;
  background-image:linear-gradient(100deg,rgba(15,27,45,.86),rgba(20,80,216,.72)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;color:#fff;
}
.cta-inner{padding:56px 52px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{font-size:30px;line-height:1.3;font-weight:700;color:#fff;}
.cta-inner p{margin-top:12px;font-size:16px;color:rgba(255,255,255,.84);max-width:620px;}
.cta-inner .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7);}
.cta-inner .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;background:#0E1A2E;color:#B7C4D8;padding-top:64px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.foot-brand .brand-text{color:#fff;font-size:18px;font-weight:700;}
.foot-brand .brand-text span{color:#7FA6FF;}
.foot-about{font-size:14.5px;line-height:1.8;color:#93A3BC;max-width:340px;}
.foot-social{display:flex;gap:12px;margin-top:22px;}
.foot-social a{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.07);color:#C8D5EA;font-size:15px;transition:all .2s ease;
}
.foot-social a:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px);}
.foot-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.foot-list{list-style:none;padding:0;margin:0;}
.foot-list li{margin-bottom:11px;}
.foot-list a{font-size:14.5px;color:#9DACC4;}
.foot-list a:hover{color:#fff;}
.foot-contact{list-style:none;padding:0;margin:0;}
.foot-contact li{display:flex;align-items:flex-start;gap:10px;margin-bottom:13px;font-size:14.5px;color:#9DACC4;}
.foot-contact i{color:#7FA6FF;margin-top:4px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:22px 0 26px;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:#8394AE;
}

/* ---------- 底部固定转化条 ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;border-top:1px solid rgba(47,107,255,.2);
  box-shadow:0 -6px 24px rgba(19,64,133,.1);transform:translateY(110%);transition:transform .3s ease;
}
.sticky-cta.is-visible{transform:translateY(0);}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px;}
.sticky-tip{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:500;color:var(--c-text);}
.sticky-tip i{color:var(--c-accent);}
.sticky-inner .btn{height:42px;padding:0 24px;font-size:14px;}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden;pointer-events:none;}
.drawer.is-open{visibility:visible;pointer-events:auto;}
.drawer-mask{position:absolute;inset:0;background:rgba(15,27,45,.45);opacity:0;transition:opacity .25s ease;}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;
  padding:22px 22px 32px;transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-head .brand-text{font-size:18px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-text);font-size:16px;cursor:pointer;}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px;}
.drawer-nav a{padding:13px 14px;border-radius:10px;font-size:15.5px;font-weight:500;color:var(--c-text-2);background:#F7FAFF;}
.drawer-nav a:hover,.drawer-nav a.is-active{background:rgba(47,107,255,.1);color:var(--c-primary);}
.drawer-cta{width:100%;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-links{gap:0;}
  .nav-link{padding:0 10px;font-size:14.5px;}
  .nav-search input{width:190px;}
}
@media (max-width:1023px){
  .nav-links,.nav-search,.nav-login{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-bar{justify-content:space-between;height:64px;}
  .grid-container{padding-left:24px;padding-right:24px;}
  .art-body-card{padding:32px 26px;}
  .art-title{font-size:28px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{padding:44px 32px;}
  .sec-head h2{font-size:26px;}
}
@media (max-width:639px){
  body{padding-bottom:60px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:30px;height:30px;font-size:15px;}
  .art-head{padding:30px 0 22px;}
  .art-title{font-size:24px;}
  .art-meta{gap:12px;font-size:13px;}
  .art-body-card{padding:24px 18px;border-radius:12px;}
  .article-content h2{font-size:21px;}
  .article-content h3{font-size:18px;}
  .card-grid{grid-template-columns:1fr;gap:16px;}
  .related{padding-top:52px;}
  .sec-head h2{font-size:23px;}
  .cta-band{margin-top:56px;border-radius:14px;}
  .cta-inner{padding:34px 22px;}
  .cta-inner h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .sticky-inner{height:60px;padding-bottom:env(safe-area-inset-bottom);}
  .sticky-tip{font-size:14px;}
  .sticky-inner .btn{height:40px;padding:0 18px;}
  .art-actions{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --c-primary:#2F6BFF;
  --c-primary-deep:#1450D8;
  --c-primary-soft:rgba(47,107,255,.08);
  --c-accent:#14C8A6;
  --c-accent-soft:rgba(20,200,166,.12);
  --c-spark:#FF7A3D;
  --c-bg:#F6F9FE;
  --c-surface:#FFFFFF;
  --c-line:#E6EDF7;
  --c-text:#0F1B2D;
  --c-text-2:#4A5B73;
  --c-text-3:#8A98AC;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:999px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(19,64,133,.06);
  --sh-2:0 12px 32px rgba(19,64,133,.12);
  --sp-section:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text-2);
  background:var(--c-bg);
  padding-bottom:60px;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-deep);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.grid-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media (min-width:1280px){
  .grid-container{max-width:1280px;}
}
.sec{padding:var(--sp-section) 0;}
.sec-alt{background:var(--c-surface);}
.sec-tint{background:linear-gradient(180deg,#F6F9FE 0%,#EAF1FF 100%);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);text-transform:uppercase;
  background:var(--c-primary-soft);
  padding:6px 14px;border-radius:var(--r-badge);margin-bottom:16px;
}
.eyebrow i{font-size:12px;}
h1{font-size:46px;line-height:1.2;font-weight:700;color:var(--c-text);letter-spacing:-.01em;}
h2{font-size:32px;line-height:1.3;font-weight:700;color:var(--c-text);letter-spacing:-.01em;}
h3{font-size:21px;line-height:1.45;font-weight:600;color:var(--c-text);}
.lead{font-size:18px;line-height:1.75;color:var(--c-text-2);}
.muted{color:var(--c-text-3);font-size:14px;}
.rule{
  width:48px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
  margin:18px 0 22px;
}
.center .rule{margin-left:auto;margin-right:auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;cursor:pointer;
  border:1.5px solid transparent;background:transparent;
  transition:background-color .22s ease, color .22s ease, border-color .22s ease, transform .22s ease, box-shadow .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(47,107,255,.22);}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(20,80,216,.28);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:var(--c-primary-deep);}
.btn-ghost:active{filter:brightness(.97);}
.btn-light{background:#fff;color:var(--c-primary);box-shadow:var(--sh-1);}
.btn-light:hover{color:var(--c-primary-deep);box-shadow:var(--sh-2);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 20px;font-size:15px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-primary);
  background:linear-gradient(var(--c-primary),var(--c-primary)) no-repeat 0 100%/0 1.5px;
  transition:background-size .25s ease,color .2s ease;
  padding-bottom:2px;
}
.link-more:hover{color:var(--c-primary-deep);background-size:100% 1.5px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--c-line);
}
.nav-bar{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),#5B8CFF);
  color:#fff;font-weight:700;font-size:17px;letter-spacing:0;
  box-shadow:0 6px 14px rgba(47,107,255,.28);
}
.brand-text{font-size:20px;font-weight:700;color:var(--c-text);letter-spacing:.01em;}
.brand-text span{color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:36px;width:240px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:var(--r-badge);
  background:#F7FAFF;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search i{color:var(--c-text-3);font-size:13px;}
.nav-search input{
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--c-text);width:100%;height:100%;
  font-family:inherit;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(47,107,255,.12);}
.nav-login{font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 4px;}
.nav-login:hover{color:var(--c-primary);}
.nav-cta{height:40px;padding:0 22px;font-size:15px;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-text);
  align-items:center;justify-content:center;font-size:16px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ============ 抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.42);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:86vw;
  background:#fff;z-index:90;transform:translateX(102%);
  transition:transform .28s ease;display:flex;flex-direction:column;
  box-shadow:-16px 0 40px rgba(15,27,45,.16);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--c-line);
}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-text-2);cursor:pointer;
}
.drawer-nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;}
.drawer-nav a{
  padding:12px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--c-text-2);
}
.drawer-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.drawer-foot{margin-top:auto;padding:20px;border-top:1px solid var(--c-line);}
.drawer-foot .btn{width:100%;}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--c-line);}
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:14px;color:var(--c-text-3);padding:14px 0;
}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb i{font-size:10px;color:var(--c-text-3);}
.crumb .now{color:var(--c-primary);font-weight:600;}

/* ============ 分类首屏 ============ */
.page-hero{
  background:linear-gradient(135deg,#F6F9FE 0%,#EAF1FF 100%);
  padding:64px 0 72px;
  position:relative;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;top:-120px;right:-120px;width:360px;height:360px;
  border-radius:50%;background:radial-gradient(circle,rgba(20,200,166,.16),transparent 68%);
}
.page-hero .grid-x{position:relative;z-index:1;align-items:center;}
.page-hero h1{font-size:44px;}
.page-hero .lead{margin-top:18px;max-width:600px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}
.hero-note{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:22px;font-size:14px;color:var(--c-text-3);
}
.hero-note i{color:var(--c-accent);}
.hero-figure{
  border-radius:16px;overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-2);aspect-ratio:16/10;background:#fff;position:relative;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(47,107,255,.14),rgba(255,255,255,0) 62%);
}
.stat-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;margin-top:34px;
}
.stat-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--sh-1);
}
.stat-num{font-size:24px;font-weight:700;color:var(--c-primary);line-height:1.2;}
.stat-label{font-size:13px;color:var(--c-text-3);margin-top:4px;}

/* ============ 卖点非对称 ============ */
.feature-main{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:34px;box-shadow:var(--sh-1);height:100%;
  display:flex;flex-direction:column;
}
.feature-main p{margin-top:12px;font-size:16px;line-height:1.8;}
.icon-block{
  width:52px;height:52px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:22px;
  margin-bottom:18px;
}
.feature-side{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);height:100%;
  transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.feature-side:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#D6E3FA;}
.feature-side .icon-mini{
  width:40px;height:40px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-accent-soft);color:#0E9C81;font-size:17px;margin-bottom:14px;
}
.feature-side h3{font-size:19px;}
.feature-side p{margin-top:8px;font-size:15px;color:var(--c-text-2);}

/* ============ 标签页 / 场景 ============ */
.tabs-head{
  display:flex;gap:6px;border-bottom:1px solid var(--c-line);
  margin-bottom:34px;overflow-x:auto;
}
.tab-btn{
  position:relative;border:0;background:transparent;cursor:pointer;
  padding:14px 20px;font-size:16px;font-weight:500;color:var(--c-text-3);
  white-space:nowrap;transition:color .2s ease;
}
.tab-btn:hover{color:var(--c-primary);}
.tab-btn.is-active{color:var(--c-primary);font-weight:600;}
.tab-btn.is-active::after{
  content:"";position:absolute;left:20px;right:20px;bottom:-1px;height:3px;
  border-radius:3px 3px 0 0;background:var(--c-primary);
}
.tab-panel{display:none;}
.tab-panel.is-active{display:block;animation:fadeUp .32s ease;}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.shot{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);
  aspect-ratio:16/10;background:#EEF4FF;
}
.shot img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease;}
.shot:hover img{transform:scale(1.03);}
.panel-copy h3{font-size:24px;margin-bottom:14px;}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.point-list li{
  position:relative;padding-left:20px;font-size:16px;color:var(--c-text-2);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.panel-copy .link-more{margin-top:22px;}

/* ============ 时间线 ============ */
.timeline{display:grid;gap:18px;}
.tl-item{
  display:grid;grid-template-columns:76px 1fr;gap:22px;align-items:start;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.tl-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.tl-num{
  font-size:22px;font-weight:700;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:12px;
  display:flex;align-items:center;justify-content:center;height:52px;
  letter-spacing:.02em;
}
.tl-body h3{font-size:19px;}
.tl-body p{margin-top:8px;font-size:15px;}

/* ============ 受众 ============ */
.aud-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;height:100%;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.aud-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.aud-card .icon-mini{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:18px;margin-bottom:16px;
}
.aud-card h3{font-size:19px;}
.aud-card p{margin-top:10px;font-size:15px;}

/* ============ 社会认同 ============ */
.quote-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);height:100%;position:relative;
}
.quote-card::before{
  content:"\201C";position:absolute;top:10px;left:24px;
  font-size:64px;line-height:1;color:rgba(47,107,255,.14);font-family:Georgia,serif;
}
.quote-card blockquote{
  position:relative;font-size:17px;line-height:1.85;color:var(--c-text-2);
  padding-top:22px;
}
.quote-meta{display:flex;align-items:center;gap:12px;margin-top:22px;}
.avatar-dot{
  width:42px;height:42px;border-radius:50%;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  color:#fff;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;
}
.quote-meta strong{display:block;font-size:15px;color:var(--c-text);font-weight:600;}
.quote-meta span{font-size:13px;color:var(--c-text-3);}
.proof-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;height:100%;}
.proof-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;justify-content:center;
}
.proof-item .num{font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.1;}
.proof-item .txt{font-size:14px;color:var(--c-text-3);margin-top:8px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  padding:22px 0;font-size:18px;font-weight:600;color:var(--c-text);
  font-family:inherit;transition:color .2s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;
  transition:transform .25s ease,background-color .25s ease;
}
.faq-item.is-open .faq-q .sign{transform:rotate(180deg);background:var(--c-primary);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

/* ============ CTA ============ */
.cta-panel{
  background:linear-gradient(135deg,#EAF1FF 0%,#F6F9FE 60%,#E9FBF7 100%);
  border:1px solid var(--c-line);border-radius:20px;
  padding:52px;box-shadow:var(--sh-1);
}
.cta-panel h2{font-size:30px;}
.cta-panel p{margin-top:14px;font-size:16px;}
.form-row{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap;}
.form-row input{
  flex:1 1 260px;height:48px;padding:0 16px;
  border:1px solid var(--c-line);border-radius:var(--r-input);
  font-size:15px;font-family:inherit;color:var(--c-text);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row input::placeholder{color:var(--c-text-3);}
.form-row input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,107,255,.14);}
.form-hint{margin-top:12px;font-size:13px;color:var(--c-text-3);}

/* ============ 页脚 ============ */
.site-footer{
  background:#F2F6FC;border-top:1px solid var(--c-line);
  padding:64px 0 0;margin-top:0;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-about{font-size:14px;line-height:1.85;color:var(--c-text-2);max-width:320px;}
.foot-social{display:flex;gap:10px;margin-top:20px;}
.foot-social a{
  width:38px;height:38px;border-radius:11px;background:#fff;
  border:1px solid var(--c-line);color:var(--c-text-2);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.foot-social a:hover{color:var(--c-primary);border-color:var(--c-primary);transform:translateY(-2px);}
.foot-title{font-size:15px;font-weight:600;color:var(--c-text);margin-bottom:16px;}
.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list a{font-size:14px;color:var(--c-text-2);}
.foot-list a:hover{color:var(--c-primary);}
.foot-contact{display:flex;flex-direction:column;gap:12px;}
.foot-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-text-2);}
.foot-contact i{color:var(--c-primary);margin-top:4px;font-size:14px;}
.foot-bottom{
  margin-top:52px;border-top:1px solid var(--c-line);
  padding:22px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}

/* ============ 底部固定条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid rgba(47,107,255,.2);
  box-shadow:0 -8px 24px rgba(19,64,133,.08);
  transform:translateY(110%);transition:transform .3s ease;
}
.sticky-cta.is-show{transform:translateY(0);}
.sticky-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:64px;
}
.sticky-text{font-size:15px;color:var(--c-text-2);font-weight:500;}
.sticky-text i{color:var(--c-accent);margin-right:8px;}
.sticky-cta .btn{height:42px;padding:0 24px;font-size:15px;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--sp-section:72px;}
  .nav-links,.nav-search,.nav-login{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-bar{height:64px;}
  .brand-text{font-size:18px;}
  h1{font-size:36px;}
  .page-hero h1{font-size:36px;}
  h2{font-size:27px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .foot-about{max-width:none;}
  .proof-grid{grid-template-columns:1fr;margin-top:16px;}
}
@media (max-width:639px){
  :root{--sp-section:56px;}
  body{font-size:15px;padding-bottom:60px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  h1{font-size:30px;}
  .page-hero h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .lead{font-size:16px;}
  .page-hero{padding:40px 0 48px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .stat-strip{grid-template-columns:1fr;gap:12px;}
  .feature-main{padding:24px;}
  .cta-panel{padding:28px 22px;border-radius:16px;}
  .form-row{flex-direction:column;}
  .form-row .btn{width:100%;}
  .tl-item{grid-template-columns:56px 1fr;gap:16px;padding:20px;}
  .tl-num{height:46px;font-size:18px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .sticky-inner{height:60px;padding-bottom:env(safe-area-inset-bottom);}
  .sticky-text{font-size:13px;}
  .sticky-cta .btn{height:40px;padding:0 18px;font-size:14px;}
  .quote-card{padding:24px;}
  .tabs-head{gap:2px;}
  .tab-btn{padding:12px 14px;font-size:15px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#2F6BFF;
  --c-primary-deep:#1450D8;
  --c-accent:#14C8A6;
  --c-spark:#FF7A3D;
  --c-bg:#F6F9FE;
  --c-surface:#FFFFFF;
  --c-line:#E6EDF7;
  --c-text:#0F1B2D;
  --c-text-2:#4A5B73;
  --c-text-3:#8A98AC;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.04),0 8px 24px rgba(19,64,133,.06);
  --shadow-lg:0 12px 32px rgba(19,64,133,.12);
  --ease:.22s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Inter",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:-.01em}
h1{font-size:44px;line-height:1.2}
h2{font-size:32px;line-height:1.3}
h3{font-size:21px;line-height:1.45}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
button{font-family:inherit;cursor:pointer}
input,button{font-family:inherit}

.grid-container{max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}
@media (min-width:1280px){.grid-container{max-width:1280px}}
@media (max-width:639px){.grid-container{padding-left:20px;padding-right:20px}}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#FFFFFF;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 1px 2px rgba(15,27,45,.03);
}
.nav-bar{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--c-primary) 0%,#4C86FF 100%);
  color:#fff;display:grid;place-items:center;
  font-size:16px;font-weight:700;letter-spacing:0;
}
.brand-text{font-size:19px;font-weight:700;color:var(--c-text);white-space:nowrap}
.brand-text span{color:var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;min-width:0;margin-left:6px}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
  white-space:nowrap;
}
.nav-link:hover{background:#EDF3FF;color:var(--c-primary)}
.nav-link.is-active{color:var(--c-primary);background:#EDF3FF;font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:230px;height:36px;padding:0 14px;
  background:#F7FAFF;border:1px solid var(--c-line);border-radius:999px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.nav-search i{font-size:13px;color:var(--c-text-3)}
.nav-search input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--c-text);
}
.nav-search input::placeholder{color:var(--c-text-3)}
.nav-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(47,107,255,.12)}
.nav-login{font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 4px;white-space:nowrap}
.nav-login:hover{color:var(--c-primary)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  border:1.5px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(47,107,255,.24)}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(20,80,216,.28)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:#fff}
.btn-outline:hover{background:rgba(47,107,255,.08);color:var(--c-primary-deep)}
.btn-ghost{color:var(--c-text-2);background:transparent;padding:0 8px;height:auto}
.btn-ghost:hover{color:var(--c-primary)}
.btn-white{background:#fff;color:var(--c-primary-deep);box-shadow:0 10px 26px rgba(6,26,70,.18)}
.btn-white:hover{background:#F2F7FF;transform:translateY(-1px)}
.nav-cta{height:40px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-text-2);
  align-items:center;justify-content:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}

@media (max-width:1023px){
  .nav-links{display:none}
  .nav-search{display:none}
  .nav-login{display:none}
  .nav-toggle{display:inline-flex}
  .nav-bar{justify-content:space-between;gap:12px}
}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.42);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
  background:#fff;z-index:95;padding:22px 22px 32px;
  transform:translateX(105%);transition:transform .28s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;box-shadow:-12px 0 36px rgba(15,27,45,.14);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-text-2)}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary)}
.drawer-list{display:flex;flex-direction:column;gap:4px;margin-bottom:22px}
.drawer-list a{
  padding:12px 14px;border-radius:10px;color:var(--c-text-2);
  font-size:16px;font-weight:500;
}
.drawer-list a:hover{background:#EDF3FF;color:var(--c-primary)}
.drawer-list a.is-active{background:#EDF3FF;color:var(--c-primary);font-weight:600}
.drawer .btn{width:100%}

/* ============ 通用板块 ============ */
main{display:block}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-alt{background:#FFFFFF}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);margin-bottom:14px;
}
.section-eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--c-primary)}
.section-head p{margin-top:16px;font-size:17px;color:var(--c-text-2);max-width:640px}
.section-head.center p{margin-left:auto;margin-right:auto}
.tone-accent{color:var(--c-accent)}

/* ============ Hero ============ */
.page-hero{
  background:linear-gradient(180deg,#F6F9FE 0%,#EAF1FF 100%);
  border-bottom:1px solid var(--c-line);
  padding:44px 0 72px;
}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--c-text-3);margin-bottom:28px;
}
.crumb a{color:var(--c-text-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb i{font-size:10px;color:#B9C5D6}
.crumb .current{color:var(--c-text-2);font-weight:500}
.hero-grid>.cell{margin-bottom:0}
.hero-copy{max-width:620px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(20,200,166,.12);border:1px solid rgba(20,200,166,.32);
  color:#0E9E82;font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero-title{font-size:46px;line-height:1.18;letter-spacing:-.02em}
.hero-title em{font-style:normal;color:var(--c-primary)}
.hero-lead{margin-top:20px;font-size:18px;line-height:1.8;color:var(--c-text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:28px;font-size:14px;color:var(--c-text-2)}
.hero-points li{display:inline-flex;align-items:center;gap:7px}
.hero-points li i{color:var(--c-accent);font-size:12px}
.hero-points .dot{width:4px;height:4px;border-radius:50%;background:#C7D3E4}
.hero-media{position:relative;margin-top:0}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:16px;border:1px solid var(--c-line);
  box-shadow:0 18px 44px rgba(19,64,133,.14);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:16px;
  background:linear-gradient(180deg,rgba(47,107,255,0) 55%,rgba(20,80,216,.14) 100%);
  pointer-events:none;
}
.hero-float{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:#fff;border-radius:12px;padding:12px 16px;
  box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:12px;
}
.hero-float i{color:var(--c-accent);font-size:18px}
.hero-float b{display:block;font-size:15px;color:var(--c-text);font-weight:600}
.hero-float span{font-size:12px;color:var(--c-text-3)}

.stat-bar{
  margin-top:56px;background:#fff;border:1px solid var(--c-line);
  border-radius:16px;box-shadow:var(--shadow-sm);
  display:grid;grid-template-columns:repeat(3,1fr);
  overflow:hidden;
}
.stat-item{padding:26px 28px;border-right:1px solid var(--c-line)}
.stat-item:last-child{border-right:0}
.stat-num{font-size:30px;font-weight:700;color:var(--c-text);line-height:1.2}
.stat-num small{font-size:15px;font-weight:600;color:var(--c-primary);margin-left:4px}
.stat-label{margin-top:6px;font-size:14px;color:var(--c-text-3)}

@media (max-width:1023px){
  .page-hero{padding:36px 0 56px}
  .hero-title{font-size:36px}
  .hero-copy{max-width:none}
  .hero-media{margin-top:36px}
  .stat-bar{margin-top:44px}
}
@media (max-width:639px){
  .hero-title{font-size:30px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .stat-bar{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--c-line)}
  .stat-item:last-child{border-bottom:0}
}

/* ============ 斑马纹图文流 ============ */
.zebra-strip{padding:64px 0}
.zebra-strip:nth-child(odd){background:#FFFFFF}
.zebra-strip:nth-child(even){background:var(--c-bg)}
.zebra-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.zebra-strip:nth-child(even) .zebra-media{order:2}
.zebra-media{position:relative}
.zebra-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--c-line);
  box-shadow:var(--shadow-sm);
  transition:transform .24s ease;
}
.zebra-media:hover img{transform:scale(1.02)}
.zebra-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;
  background:rgba(47,107,255,.09);color:var(--c-primary);
  font-size:15px;font-weight:700;margin-bottom:16px;
}
.zebra-copy h3{font-size:24px;margin-bottom:14px}
.zebra-copy p{font-size:16px;color:var(--c-text-2)}
.zebra-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.zebra-list li{display:flex;gap:12px;font-size:15px;color:var(--c-text-2);line-height:1.7}
.zebra-list li::before{
  content:"";flex-shrink:0;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);margin-top:10px;
}
.zebra-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:22px;font-size:15px;font-weight:600;color:var(--c-primary);
}
.zebra-link i{font-size:12px;transition:transform var(--ease)}
.zebra-link:hover i{transform:translateX(4px)}
@media (max-width:1023px){
  .zebra-strip{padding:48px 0}
  .zebra-row{grid-template-columns:1fr;gap:32px}
  .zebra-strip:nth-child(even) .zebra-media{order:0}
}

/* ============ 时间线 ============ */
.flow-wrap{position:relative;max-width:900px;margin:0 auto}
.flow-item{
  display:grid;grid-template-columns:80px 1fr;gap:26px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--shadow-sm);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.flow-item+.flow-item{margin-top:18px}
.flow-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:#D6E3F8}
.flow-num{
  font-size:26px;font-weight:700;color:var(--c-primary);
  line-height:1.2;letter-spacing:-.02em;
  border-right:2px solid #EDF3FF;padding-right:16px;
}
.flow-body h3{font-size:19px;margin-bottom:8px}
.flow-body p{font-size:15px;color:var(--c-text-2)}
.flow-tag{
  display:inline-block;margin-top:12px;padding:3px 12px;border-radius:999px;
  background:rgba(20,200,166,.12);color:#0E9E82;font-size:13px;font-weight:600;
}
@media (max-width:639px){
  .flow-item{grid-template-columns:1fr;gap:12px;padding:22px 20px}
  .flow-num{border-right:0;border-bottom:2px solid #EDF3FF;padding:0 0 10px;font-size:22px}
}

/* ============ 对比表 ============ */
.table-wrap{
  overflow-x:auto;border-radius:var(--r-card);
  border:1px solid var(--c-line);background:#fff;box-shadow:var(--shadow-sm);
}
.compare-table{width:100%;min-width:640px;border-collapse:collapse}
.compare-table th{
  background:#F2F6FC;color:var(--c-text);font-size:15px;font-weight:600;
  text-align:left;padding:18px 24px;border-bottom:1px solid var(--c-line);
}
.compare-table td{
  padding:18px 24px;font-size:15px;color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);vertical-align:top;
}
.compare-table tr:last-child td{border-bottom:0}
.compare-table td:first-child{color:var(--c-text);font-weight:600}
.tag-good,.tag-risk{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;font-size:13px;font-weight:600;
}
.tag-good{background:rgba(20,200,166,.12);color:#0E9E82}
.tag-risk{background:rgba(255,122,61,.12);color:#D9571F}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:first-child{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;text-align:left;
  padding:22px 4px;font-size:18px;font-weight:600;color:var(--c-text);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--c-primary)}
.faq-q i{font-size:14px;color:var(--c-text-3);transition:transform .26s ease,color var(--ease);flex-shrink:0}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-item.is-open .faq-q i{transform:rotate(45deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--c-text-2)}

/* ============ 宽幅 CTA ============ */
.cta-panel{
  background:linear-gradient(135deg,#2F6BFF 0%,#1450D8 100%);
  border-radius:22px;padding:56px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:0 20px 48px rgba(20,80,216,.24);
  position:relative;overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;right:-60px;top:-70px;
  width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.09);
}
.cta-panel::after{
  content:"";position:absolute;right:90px;bottom:-90px;
  width:180px;height:180px;border-radius:50%;
  background:rgba(20,200,166,.24);
}
.cta-copy{position:relative;z-index:2;max-width:640px}
.cta-copy h2{color:#fff;font-size:30px}
.cta-copy p{margin-top:14px;color:rgba(255,255,255,.84);font-size:16px;line-height:1.8}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap}
.cta-actions .btn-outline{border-color:rgba(255,255,255,.72);color:#fff;background:transparent}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.16);color:#fff}
@media (max-width:1023px){
  .cta-panel{flex-direction:column;align-items:flex-start;padding:40px 32px;gap:26px}
}
@media (max-width:639px){
  .cta-panel{padding:34px 22px;border-radius:18px}
  .cta-copy h2{font-size:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}

/* ============ 页脚 ============ */
.site-footer{
  background:#F2F6FC;border-top:1px solid var(--c-line);
  padding:64px 0 96px;margin-top:0;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-about{font-size:14px;line-height:1.85;color:var(--c-text-2);max-width:320px}
.foot-social{display:flex;gap:10px;margin-top:20px}
.foot-social a{
  width:38px;height:38px;border-radius:10px;background:#fff;border:1px solid var(--c-line);
  display:grid;place-items:center;color:var(--c-text-2);
}
.foot-social a:hover{color:var(--c-primary);border-color:var(--c-primary);transform:translateY(-2px)}
.foot-title{font-size:15px;font-weight:700;color:var(--c-text);margin-bottom:16px}
.foot-list li+li{margin-top:10px}
.foot-list a{font-size:14px;color:var(--c-text-2)}
.foot-list a:hover{color:var(--c-primary)}
.foot-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);line-height:1.7}
.foot-contact li+li{margin-top:12px}
.foot-contact i{color:var(--c-primary);margin-top:5px;font-size:13px}
.foot-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid #DCE6F4;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}
@media (max-width:1023px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  .site-footer{padding:44px 0 92px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;gap:8px}
}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid rgba(47,107,255,.2);
  box-shadow:0 -6px 22px rgba(15,27,45,.09);
  transform:translateY(110%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
}
.sticky-cta.is-visible{transform:translateY(0)}
.sticky-inner{
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.sticky-text{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--c-text);font-weight:500}
.sticky-text i{color:var(--c-accent)}
.sticky-cta .btn{height:42px;padding:0 24px;font-size:14px}
@media (max-width:639px){
  .sticky-inner{
    height:60px;gap:12px;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .sticky-text{font-size:13px;gap:8px}
  .sticky-text span{max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .sticky-cta .btn{height:40px;padding:0 18px;font-size:13px}
}

/* roulang page: category2 */
/* ================= 设计变量 ================= */
:root{
  --c-primary:#2F6BFF;
  --c-primary-deep:#1450D8;
  --c-primary-soft:rgba(47,107,255,.08);
  --c-primary-line:rgba(47,107,255,.20);
  --c-accent:#14C8A6;
  --c-accent-deep:#0E9C82;
  --c-accent-soft:rgba(20,200,166,.12);
  --c-spark:#FF7A3D;
  --c-bg:#F6F9FE;
  --c-surface:#FFFFFF;
  --c-line:#E6EDF7;
  --c-line-deep:#D8E4F8;
  --c-text:#0F1B2D;
  --c-text-2:#4A5B73;
  --c-text-3:#8A98AC;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(19,64,133,.06);
  --sh-2:0 12px 32px rgba(19,64,133,.12);
  --dur:.24s;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
}

/* ================= 基础 reset ================= */
*,
*::before,
*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:78px;
}
h1,h2,h3,h4,h5,h6{margin:0;padding:0;color:var(--c-text);font-weight:600;line-height:1.3}
p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color var(--dur) ease, background-color var(--dur) ease, border-color var(--dur) ease}
a:hover{color:var(--c-primary-deep)}
img{max-width:100%;display:block;border:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* Foundation 覆盖 */
body,
html{background:var(--c-bg)}
.grid-container{
  max-width:1232px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media screen and (min-width:1280px){
  .grid-container{max-width:1312px}
}
.cell-gap{display:flex;flex-direction:column;margin-bottom:24px}
.cell-gap > *{flex:1 1 auto}

/* ================= 通用按钮 ================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  font-size:16px;
  font-weight:600;
  line-height:1;
  text-align:center;
  white-space:nowrap;
  cursor:pointer;
  transition:transform var(--dur) ease, box-shadow var(--dur) ease, background-color var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease;
}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  box-shadow:0 6px 18px rgba(47,107,255,.24);
}
.btn-primary:hover{
  background:var(--c-primary-deep);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 12px 28px rgba(20,80,216,.28);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
  background:#fff;
  border-color:var(--c-primary);
  color:var(--c-primary);
}
.btn-ghost:hover{
  background:var(--c-primary-soft);
  color:var(--c-primary-deep);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 20px;font-size:15px}

/* ================= 头部导航 ================= */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 1px 0 rgba(15,27,45,.02);
}
.nav-bar{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
  min-height:72px;
  margin:0;
  padding:0;
  background:transparent;
  border:0;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:32px;
  height:32px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-accent) 100%);
  color:#fff;
  font-size:16px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
}
.brand-text{
  font-size:19px;
  font-weight:700;
  color:var(--c-text);
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-text span{color:var(--c-primary)}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1 1 auto;
  min-width:0;
}
.nav-link{
  position:relative;
  padding:8px 12px;
  border-radius:8px;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-link.is-active{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.nav-right{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
  flex:0 0 auto;
}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search i{
  position:absolute;
  left:13px;
  font-size:13px;
  color:var(--c-text-3);
  pointer-events:none;
}
.nav-search input{
  width:236px;
  height:36px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:#F2F6FC;
  padding:0 16px 0 34px;
  font-size:14px;
  color:var(--c-text);
  transition:border-color var(--dur) ease, box-shadow var(--dur) ease, background-color var(--dur) ease;
}
.nav-search input::placeholder{color:var(--c-text-3)}
.nav-search input:focus{
  outline:none;
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(47,107,255,.12);
}
.nav-login{
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
  padding:8px 4px;
}
.nav-login:hover{color:var(--c-primary)}
.nav-cta{height:40px;padding:0 20px;font-size:15px}
.nav-toggle,
.nav-search-icon{
  display:none;
  width:40px;
  height:40px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-text-2);
  align-items:center;
  justify-content:center;
  font-size:15px;
  transition:border-color var(--dur) ease, color var(--dur) ease;
}
.nav-toggle:hover,
.nav-search-icon:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* 抽屉 */
.drawer{position:fixed;inset:0;z-index:90;pointer-events:none}
.drawer-mask{
  position:absolute;
  inset:0;
  background:rgba(15,27,45,.42);
  opacity:0;
  transition:opacity .28s ease;
}
.drawer-panel{
  position:absolute;
  top:0;
  right:0;
  height:100%;
  width:min(320px,86vw);
  background:#fff;
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:6px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  box-shadow:-12px 0 32px rgba(15,27,45,.14);
}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer-mask{opacity:1}
.drawer.is-open .drawer-panel{transform:none}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  margin-bottom:8px;
  border-bottom:1px solid var(--c-line);
}
.drawer-head .brand-text{font-size:18px}
.drawer-close{
  width:36px;
  height:36px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-text-2);
  display:flex;
  align-items:center;
  justify-content:center;
}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary)}
.drawer-link{
  display:block;
  padding:12px 14px;
  border-radius:10px;
  font-size:16px;
  font-weight:500;
  color:var(--c-text-2);
}
.drawer-link:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-link.is-active{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-cta{margin-top:16px;width:100%}

/* ================= 板块通用 ================= */
.section{padding:96px 0}
.section--white{background:#fff}
.section--soft{background:linear-gradient(180deg,#FFFFFF 0%,#F6F9FE 100%)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:32px;line-height:1.3}
.section-head p{margin-top:12px;font-size:16px;color:var(--c-text-2)}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-kicker{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--c-primary);
  margin-bottom:12px;
}

/* ================= 面包屑 ================= */
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:var(--c-text-3);
  margin-bottom:24px;
  position:relative;
  z-index:2;
}
.crumbs a{color:var(--c-text-3)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:#C3CEDF}
.crumbs .cur{color:var(--c-text-2);font-weight:500}

/* ================= 分类首屏 ================= */
.page-hero{
  position:relative;
  padding:44px 0 88px;
  background-image:
    linear-gradient(118deg, rgba(246,249,254,.97) 0%, rgba(234,241,255,.90) 52%, rgba(246,249,254,.94) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-line);
}
.hero-grid{position:relative;z-index:2}
.hero-copy{padding-right:8px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:var(--c-accent-soft);
  color:var(--c-accent-deep);
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
}
.hero-copy h1{
  font-size:46px;
  line-height:1.2;
  letter-spacing:-.01em;
  font-weight:700;
}
.hero-lead{
  margin-top:18px;
  max-width:560px;
  font-size:18px;
  line-height:1.75;
  color:var(--c-text-2);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 18px;
  margin-top:26px;
  font-size:14px;
  color:var(--c-text-2);
}
.hero-points span{display:inline-flex;align-items:center;gap:8px}
.hero-points i{color:var(--c-accent);font-size:13px}
.hero-points .dot{width:4px;height:4px;border-radius:50%;background:#C3CEDF;display:inline-block}
.hero-visual{
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  background:#fff;
  aspect-ratio:4/3;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}

/* 数据条 */
.stat-strip{
  position:relative;
  z-index:2;
  margin-top:52px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.stat-item{
  padding:24px 20px;
  text-align:center;
  border-right:1px solid var(--c-line);
}
.stat-item:last-child{border-right:0}
.stat-num{
  font-size:26px;
  font-weight:700;
  color:var(--c-text);
  letter-spacing:.01em;
  line-height:1.3;
}
.stat-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--c-primary);margin-left:2px}
.stat-label{margin-top:4px;font-size:13px;color:var(--c-text-3)}

/* ================= 筛选条 ================= */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 20px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  margin-bottom:32px;
}
.filter-tabs{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  padding:8px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-text-2);
  font-size:14px;
  font-weight:500;
  transition:background-color var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease, box-shadow var(--dur) ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary)}
.chip.is-active{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
  box-shadow:0 6px 16px rgba(47,107,255,.22);
}
.sort-box{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--c-text-3)}
.sort-box select{
  height:40px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-text-2);
  padding:0 12px;
  font-size:14px;
}
.sort-box select:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,107,255,.12)}

/* ================= 模块卡片 ================= */
.m-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform var(--dur) ease, box-shadow var(--dur) ease, border-color var(--dur) ease;
}
.m-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:var(--c-line-deep);
}
.m-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EDF3FF;
}
.m-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .26s ease;
}
.m-card:hover .m-thumb img{transform:scale(1.03)}
.badge{
  position:absolute;
  left:14px;
  top:14px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.95);
  border:1px solid rgba(20,200,166,.55);
  color:var(--c-accent-deep);
  font-size:13px;
  font-weight:600;
  line-height:1.4;
}
.m-body{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:24px;
  flex:1 1 auto;
}
.m-title{font-size:20px;line-height:1.45}
.m-desc{font-size:15px;color:var(--c-text-2)}
.m-points{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.m-points li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  line-height:1.7;
  color:var(--c-text-2);
}
.m-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-primary);
}
.m-link{
  margin-top:auto;
  padding-top:8px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-primary);
  align-self:flex-start;
  border-bottom:1.5px solid transparent;
  transition:border-color var(--dur) ease, color var(--dur) ease;
}
.m-link i{font-size:12px;transition:transform var(--dur) ease}
.m-link:hover{border-bottom-color:var(--c-primary)}
.m-link:hover i{transform:translateX(3px)}

/* ================= 上手路径 ================= */
.path-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  height:100%;
  padding:26px 24px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform var(--dur) ease, box-shadow var(--dur) ease;
}
.path-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.path-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:10px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:15px;
  font-weight:700;
}
.path-card h3{font-size:19px;line-height:1.45}
.path-card p{font-size:15px;color:var(--c-text-2)}

/* ================= FAQ ================= */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--c-line);padding:22px 0}
.faq-item:last-child{border-bottom:0}
.faq-q{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  font-size:18px;
  font-weight:600;
  color:var(--c-text);
  cursor:pointer;
  list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q i{
  flex:0 0 auto;
  margin-top:4px;
  font-size:14px;
  color:var(--c-primary);
  transition:transform var(--dur) ease;
}
.faq-item[open] .faq-q i{transform:rotate(45deg)}
.faq-a{
  padding-top:12px;
  padding-right:34px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text-2);
}

/* ================= CTA 面板 ================= */
.cta-panel{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:48px;
  border-radius:18px;
  border:1px solid var(--c-line);
  background:linear-gradient(120deg,#EAF1FF 0%,#F3FBF9 100%);
  box-shadow:var(--sh-1);
}
.cta-panel h2{font-size:30px;line-height:1.3}
.cta-panel p{margin-top:12px;font-size:16px;color:var(--c-text-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}

/* ================= 页脚 ================= */
.site-footer{
  background:#F2F6FC;
  border-top:1px solid var(--c-line);
  padding:64px 0 0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.45fr 1fr 1fr 1.2fr;
  gap:40px;
}
.foot-brand{display:flex;align-items:center;gap:10px}
.foot-about{
  margin-top:16px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-text-2);
  max-width:340px;
}
.foot-social{display:flex;gap:10px;margin-top:20px}
.foot-social a{
  width:36px;
  height:36px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--c-text-2);
  font-size:14px;
}
.foot-social a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}
.foot-title{
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  margin-bottom:18px;
}
.foot-list{display:flex;flex-direction:column;gap:12px}
.foot-list a{font-size:15px;color:var(--c-text-2)}
.foot-list a:hover{color:var(--c-primary)}
.foot-contact{display:flex;flex-direction:column;gap:12px}
.foot-contact li{display:flex;gap:10px;font-size:15px;color:var(--c-text-2);line-height:1.7}
.foot-contact i{color:var(--c-primary);margin-top:5px;font-size:14px}
.foot-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  margin-top:48px;
  padding:24px 0;
  border-top:1px solid var(--c-line);
  font-size:14px;
  color:var(--c-text-3);
}

/* ================= 底部固定转化条 ================= */
.sticky-cta{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:70;
  background:#fff;
  border-top:1px solid var(--c-primary-line);
  box-shadow:0 -6px 24px rgba(19,64,133,.08);
  transform:translateY(112%);
  transition:transform .3s ease;
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.is-visible{transform:none}
.sticky-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:64px;
}
.sticky-text{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:15px;
  font-weight:500;
  color:var(--c-text);
}
.sticky-text i{color:var(--c-accent);font-size:15px}

/* ================= 响应式 ================= */
@media screen and (max-width:1023px){
  .nav-links,
  .nav-search,
  .nav-login,
  .nav-cta{display:none}
  .nav-search-icon,
  .nav-toggle{display:flex}
  .nav-bar{height:58px;min-height:58px;gap:10px}
  .section{padding:72px 0}
  .page-hero{padding:32px 0 68px}
  .hero-copy h1{font-size:38px}
  .hero-lead{font-size:17px}
  .hero-visual{margin-top:28px;aspect-ratio:16/9}
  .stat-strip{grid-template-columns:repeat(2,1fr);margin-top:40px}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),
  .stat-item:nth-child(2){border-bottom:1px solid var(--c-line)}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:36px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-about{max-width:none}
}

@media screen and (max-width:767px){
  .grid-container{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:26px}
  .m-body{padding:20px}
  .m-title{font-size:18px}
  .faq-q{font-size:17px}
  .faq-a{padding-right:0}
  .cta-panel{padding:28px 22px}
  .cta-panel h2{font-size:23px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;gap:8px}
  .sticky-inner{height:60px}
  .sticky-text{font-size:14px}
  .sticky-text span.long{display:none}
  .sticky-inner .btn{height:40px;padding:0 18px;font-size:15px}
}

@media screen and (max-width:519px){
  .hero-copy h1{font-size:31px}
  .hero-actions .btn{width:100%}
  .stat-num{font-size:22px}
  .filter-bar{padding:14px}
  .btn{height:46px;padding:0 20px;font-size:15px}
  body{padding-bottom:70px}
}

/* roulang page: category4 */
:root{
  --c-primary:#2F6BFF;
  --c-primary-deep:#1450D8;
  --c-accent:#14C8A6;
  --c-spark:#FF7A3D;
  --c-bg:#F6F9FE;
  --c-surface:#FFFFFF;
  --c-line:#E6EDF7;
  --c-text:#0F1B2D;
  --c-text-2:#4A5B73;
  --c-text-3:#8A98AC;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.04),0 8px 24px rgba(19,64,133,.06);
  --shadow-lg:0 12px 32px rgba(19,64,133,.12);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0 0 64px;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text-2);
  background:var(--c-bg);
  font-weight:400;
}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--c-primary-deep);}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

.grid-container{max-width:1200px!important;padding-left:32px!important;padding-right:32px!important;margin:0 auto;}
@media (min-width:1280px){.grid-container{max-width:1280px!important;}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;transition:background-color .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(47,107,255,.24);}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(20,80,216,.3);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:rgba(47,107,255,.08);color:var(--c-primary-deep);border-color:var(--c-primary-deep);}
.btn-ghost:active{background:rgba(47,107,255,.14);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(255,255,255,.95);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(160%) blur(10px);-webkit-backdrop-filter:saturate(160%) blur(10px);
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,#2F6BFF 0%,#5C93FF 100%);
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;
  box-shadow:0 6px 16px rgba(47,107,255,.28);
}
.brand-text{font-size:19px;font-weight:700;color:var(--c-text);letter-spacing:.4px;white-space:nowrap;}
.brand-text span{color:var(--c-primary);}
.brand:hover .brand-text{color:var(--c-text);}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center;}
.nav-link{
  display:inline-block;padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--c-text-2);white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:rgba(47,107,255,.07);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;background:rgba(47,107,255,.1);}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:36px;width:230px;
  padding:0 14px;border-radius:999px;border:1px solid var(--c-line);background:#F8FAFF;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search i{color:var(--c-text-3);font-size:13px;}
.nav-search input{
  border:0;background:transparent;height:34px;width:100%;padding:0;margin:0;
  box-shadow:none;font-size:14px;color:var(--c-text);outline:none;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(47,107,255,.12);}
.nav-login{font-size:15px;font-weight:500;color:var(--c-text-2);}
.nav-login:hover{color:var(--c-primary);}
.nav-cta{height:40px;padding:0 20px;font-size:14px;box-shadow:0 6px 16px rgba(47,107,255,.22);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-text);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;z-index:120;
  background:#fff;box-shadow:-16px 0 40px rgba(15,27,45,.16);
  transform:translateX(104%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  padding:22px 22px 32px;overflow-y:auto;display:flex;flex-direction:column;gap:18px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-text-2);font-size:16px;cursor:pointer;}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;border-radius:var(--radius-btn);
  border:1px solid var(--c-line);background:#F8FAFF;
}
.drawer-search i{color:var(--c-text-3);font-size:13px;}
.drawer-search input{border:0;background:transparent;box-shadow:none;height:42px;outline:none;width:100%;font-size:14px;}
.drawer-links{display:flex;flex-direction:column;gap:4px;}
.drawer-link{
  display:block;padding:12px 14px;border-radius:10px;font-size:15px;color:var(--c-text-2);font-weight:500;
}
.drawer-link:hover{background:rgba(47,107,255,.07);color:var(--c-primary);}
.drawer-link.is-active{background:rgba(47,107,255,.1);color:var(--c-primary);font-weight:600;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.42);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 内页首屏 ============ */
.page-hero{
  background:linear-gradient(180deg,#F6F9FE 0%,#EAF1FF 100%);
  border-bottom:1px solid var(--c-line);
  padding:34px 0 56px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:24px;}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C3CEDF;}
.page-hero-inner{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);background:rgba(47,107,255,.1);border-radius:999px;padding:6px 14px;
}
.eyebrow i{font-size:11px;}
.page-hero h1{font-size:44px;line-height:1.22;margin:18px 0 16px;letter-spacing:.4px;}
.lead{font-size:18px;line-height:1.75;color:var(--c-text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.page-hero-media{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--c-line);}
.page-hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;}
.page-hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(47,107,255,.14) 0%,rgba(20,200,166,.08) 55%,rgba(255,255,255,0) 100%);
  pointer-events:none;
}
.stat-strip{
  margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.stat-item{padding:22px 24px;border-right:1px solid var(--c-line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:26px;font-weight:700;color:var(--c-text);line-height:1.2;}
.stat-num em{font-style:normal;font-size:14px;font-weight:600;color:var(--c-primary);margin-left:4px;}
.stat-label{font-size:13px;color:var(--c-text-3);margin-top:4px;}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{font-size:32px;line-height:1.3;}
.section-sub{margin-top:14px;font-size:16px;color:var(--c-text-2);}
.section-tag{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-accent);
  background:rgba(20,200,166,.1);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.divider-line{width:46px;height:3px;border-radius:2px;background:var(--c-primary);margin-top:18px;}
.section-head.center .divider-line{margin-left:auto;margin-right:auto;}

/* ============ 跳转条 ============ */
.jump-bar{background:#fff;border-bottom:1px solid var(--c-line);padding:14px 0;position:relative;z-index:5;}
.jump-inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.jump-label{font-size:13px;color:var(--c-text-3);margin-right:4px;}
.jump-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;
  padding:7px 16px;border-radius:999px;border:1px solid var(--c-line);color:var(--c-text-2);background:#F8FAFF;
}
.jump-link:hover{border-color:var(--c-primary);color:var(--c-primary);background:rgba(47,107,255,.07);}
.jump-link i{font-size:11px;color:var(--c-accent);}

/* ============ 条目清单 ============ */
.qa-shell{max-width:900px;margin:0 auto;}
.qa-entries{margin-top:12px;}
.qa-entry{
  display:flex;gap:22px;padding:26px 0;border-bottom:1px dashed var(--c-line);
}
.qa-entry:first-child{padding-top:8px;}
.qa-index{
  flex:0 0 auto;width:52px;height:52px;border-radius:12px;
  background:rgba(47,107,255,.08);color:var(--c-primary);
  display:grid;place-items:center;font-size:17px;font-weight:700;letter-spacing:.5px;
}
.qa-body{flex:1 1 auto;min-width:0;}
.qa-title{font-size:20px;line-height:1.45;margin-bottom:8px;}
.qa-entry:hover .qa-title{color:var(--c-primary);}
.qa-desc{font-size:15.5px;line-height:1.8;color:var(--c-text-2);}
.qa-tag{
  display:inline-block;margin-top:12px;font-size:13px;color:var(--c-accent);
  border:1px solid rgba(20,200,166,.45);border-radius:999px;padding:3px 12px;
}

/* ============ 图文排查 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split-media{position:relative;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow-sm);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .24s ease;}
.split-media:hover img{transform:scale(1.03);}
.split-text h2{font-size:30px;line-height:1.3;margin-bottom:16px;}
.split-text p{font-size:16px;color:var(--c-text-2);}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.point-item{display:flex;gap:12px;font-size:15.5px;color:var(--c-text-2);line-height:1.75;}
.point-item i{color:var(--c-primary);font-size:9px;margin-top:9px;flex:0 0 auto;}
.point-item strong{color:var(--c-text);font-weight:600;}

/* ============ 步骤时间线 ============ */
.steps{max-width:900px;margin:0 auto;display:flex;flex-direction:column;}
.step-item{
  display:grid;grid-template-columns:88px 1fr;gap:20px;align-items:start;
  padding:26px 0;border-top:1px solid var(--c-line);
}
.step-item:last-child{border-bottom:1px solid var(--c-line);}
.step-num{
  font-size:30px;font-weight:700;line-height:1;color:transparent;
  -webkit-text-stroke:1.4px rgba(47,107,255,.5);
}
.step-title{font-size:20px;margin-bottom:8px;}
.step-desc{font-size:15.5px;color:var(--c-text-2);}

/* ============ FAQ ============ */
.faq-list{max-width:820px;margin:0 auto;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:0;padding:22px 2px;text-align:left;cursor:pointer;
  font-size:18px;font-weight:600;color:var(--c-text);line-height:1.5;transition:color .2s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);
  border-radius:2px;transform:translate(-50%,-50%);transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{font-size:15px;line-height:1.85;color:var(--c-text-2);padding:0 2px 24px;max-width:720px;}
.faq-item.is-open .faq-a{max-height:340px;}

/* ============ 双按钮条 ============ */
.dual-cta{
  background:linear-gradient(120deg,#EAF1FF 0%,#F6F9FE 55%,#E9FBF6 100%);
  border:1px solid var(--c-line);border-radius:16px;
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--shadow-sm);
}
.dual-text h2{font-size:26px;line-height:1.35;margin-bottom:10px;}
.dual-text p{font-size:15.5px;color:var(--c-text-2);max-width:620px;}
.dual-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{background:#F2F6FC;border-top:1px solid var(--c-line);padding:64px 0 28px;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-about{font-size:14px;line-height:1.8;color:var(--c-text-2);max-width:320px;margin-bottom:18px;}
.foot-social{display:flex;gap:10px;}
.foot-social a{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);background:#fff;
  display:grid;place-items:center;color:var(--c-text-2);font-size:14px;
}
.foot-social a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);}
.foot-title{font-size:15px;font-weight:600;color:var(--c-text);margin-bottom:16px;}
.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list a{font-size:14px;color:var(--c-text-2);}
.foot-list a:hover{color:var(--c-primary);}
.foot-contact{display:flex;flex-direction:column;gap:12px;}
.foot-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);align-items:flex-start;line-height:1.6;}
.foot-contact i{color:var(--c-primary);font-size:13px;margin-top:4px;}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:90;background:#fff;
  border-top:1px solid rgba(47,107,255,.22);
  box-shadow:0 -8px 24px rgba(19,64,133,.08);
  transform:translateY(120%);transition:transform .32s ease;
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.is-visible{transform:translateY(0);}
.sticky-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px;}
.sticky-text{font-size:15px;color:var(--c-text);font-weight:500;}
.sticky-text i{color:var(--c-accent);margin-right:8px;}
.sticky-actions{display:flex;align-items:center;gap:12px;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .section{padding:72px 0;}
  .nav-links,.nav-search,.nav-login,.nav-cta{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-bar{height:64px;}
  .page-hero h1{font-size:36px;}
  .page-hero-inner{grid-template-columns:1fr;gap:32px;}
  .lead{max-width:100%;}
  .split{grid-template-columns:1fr;gap:32px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--c-line);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .dual-cta{flex-direction:column;align-items:flex-start;padding:32px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .grid-container{padding-left:20px!important;padding-right:20px!important;}
  .page-hero{padding:26px 0 44px;}
  .page-hero h1{font-size:30px;}
  .lead{font-size:16.5px;}
  .section-title{font-size:25px;}
  .split-text h2{font-size:23px;}
  .stat-item{padding:18px 18px;}
  .stat-num{font-size:22px;}
  .step-item{grid-template-columns:56px 1fr;gap:14px;}
  .step-num{font-size:24px;}
  .qa-entry{gap:14px;padding:22px 0;}
  .qa-index{width:44px;height:44px;font-size:15px;border-radius:10px;}
  .qa-title{font-size:18px;}
  .faq-q{font-size:16.5px;padding:18px 2px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;}
  .dual-cta{padding:26px 20px;}
  .dual-text h2{font-size:21px;}
  body{padding-bottom:60px;}
  .sticky-cta-inner{height:60px;}
  .sticky-text{font-size:14px;}
  .hero-actions .btn{width:100%;}
}
@media (max-width:519px){
  .brand-text{font-size:17px;}
  .page-hero h1{font-size:26px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-item{border-right:0!important;border-bottom:1px solid var(--c-line);}
  .stat-item:last-child{border-bottom:0;}
  .dual-actions{width:100%;}
  .dual-actions .btn{width:100%;}
}