/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --violet:#7A3BFF;
  --violet-deep:#5B22D8;
  --violet-soft:#EFE9FF;
  --mint:#00D6B4;
  --coral:#FF5C4D;
  --gold:#FFC53D;
  --ink:#17102B;
  --ink-2:#241A3D;
  --bg:#F6F4FB;
  --card:#FFFFFF;
  --weak:#EFEBFA;
  --line:#E4DFF2;
  --text:#241C33;
  --text-2:#6A6280;
  --faint:#C9C3D8;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,16,43,.06),0 8px 24px rgba(23,16,43,.07);
  --sh-2:0 12px 32px rgba(122,59,255,.16);
  --grad:linear-gradient(135deg,#7A3BFF 0%,#00D6B4 100%);
  --nav-w:240px;
  --gap:24px;
}
/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;line-height:1.9;color:var(--text);background:var(--bg);
  letter-spacing:.01em;overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:0}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
a{color:var(--violet);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--violet-deep)}
img{max-width:100%;display:block;border-radius:var(--r-img)}
ul,ol{margin:0 0 1.1em;padding-left:1.3em;line-height:1.8}
button,input,select,textarea{font-family:inherit;font-size:inherit;letter-spacing:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--violet);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 10px 0}
.skip-link:focus{left:0;color:#fff}

/* ============ 布局骨架 ============ */
.app-shell{display:flex;min-height:100vh;flex-direction:column}
.app-nav{
  position:fixed;top:0;left:0;bottom:0;width:280px;max-width:84vw;
  background:var(--card);border-right:1px solid var(--line);
  padding:22px 18px 18px;display:flex;flex-direction:column;gap:16px;
  transform:translateX(-102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  z-index:80;overflow-y:auto;
}
.app-nav.is-open{transform:translateX(0)}
.nav-mask{
  position:fixed;inset:0;background:rgba(23,16,43,.5);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible}
.app-content{margin-left:0;min-height:100vh;display:flex;flex-direction:column;width:100%}
@media (min-width:992px){
  .app-nav{width:var(--nav-w);max-width:none;transform:none;padding:26px 20px 20px}
  .nav-mask{display:none}
  .app-content{margin-left:var(--nav-w)}
}
@media (min-width:1440px){
  :root{--nav-w:268px}
}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 22px}

/* ============ 侧栏内容 ============ */
.brand{display:flex;align-items:flex-start;gap:10px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand__mark{
  flex:0 0 36px;width:36px;height:36px;border-radius:11px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;
  box-shadow:0 6px 16px rgba(122,59,255,.28);
}
.brand__text{font-size:15px;font-weight:700;line-height:1.35;letter-spacing:0}
.brand__sub{display:block;font-size:11.5px;font-weight:400;color:var(--text-2);letter-spacing:.04em;margin-top:3px}
.app-nav__menu{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.app-nav__label{font-size:12.5px;color:var(--text-2);padding:8px 12px 2px;letter-spacing:.06em}
.nav-item{
  display:flex;align-items:center;gap:11px;padding:11px 12px;border-radius:11px;
  font-size:15px;color:var(--text-2);position:relative;transition:background .18s ease,color .18s ease;
  min-height:44px;
}
.nav-item i{width:20px;text-align:center;font-size:15px}
.nav-item:hover{background:var(--violet-soft);color:var(--violet-deep)}
.nav-item.is-active{background:var(--violet-soft);color:var(--violet);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--violet);
}
.app-nav__cta{
  margin-top:auto;background:var(--ink);border-radius:14px;padding:18px 16px;color:#fff;
}
.app-nav__cta h4{font-size:15px;margin-bottom:6px;color:#fff}
.app-nav__cta p{font-size:13px;color:rgba(255,255,255,.72);line-height:1.7;margin-bottom:12px}
.app-nav__foot{font-size:12.5px;color:var(--text-2);line-height:1.8;padding-top:12px;border-top:1px solid var(--line)}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:flex;align-items:center;gap:12px;height:56px;padding:0 14px;
  background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;
}
.topbar__btn{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--text);font-size:17px;cursor:pointer;
}
.topbar__btn:hover{background:var(--violet-soft);color:var(--violet)}
.topbar__brand{font-size:14px;font-weight:700;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}
@media (min-width:992px){.topbar{display:none}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  text-align:center;
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(122,59,255,.24)}
.btn--primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn--ghost:hover{color:#fff;background:rgba(255,255,255,.12);border-color:#fff}
.btn--outline{background:#fff;color:var(--violet);border-color:var(--line)}
.btn--outline:hover{color:var(--violet-deep);border-color:var(--violet);background:var(--violet-soft)}
.btn--coral{background:var(--coral);color:#fff;border-radius:var(--r-pill);box-shadow:0 8px 20px rgba(255,92,77,.28)}
.btn--coral:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,92,77,.34)}
.btn--full{width:100%}
.btn--sm{min-height:40px;padding:0 16px;font-size:14px}

/* ============ Hero ============ */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;border-radius:0 0 30px 30px}
.hero__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center}
.hero__veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(23,16,43,.94) 0%,rgba(23,16,43,.78) 46%,rgba(23,16,43,.46) 100%)}
.hero__grid{position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:64px 64px;}
.hero__inner{position:relative;padding:56px 0 46px}
.hero__tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.04em;
  background:rgba(122,59,255,.22);border:1px solid rgba(122,59,255,.6);color:#D9CBFF;
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:20px;
}
.hero__tag i{color:var(--mint)}
.hero h1{
  font-size:28px;line-height:1.32;margin-bottom:16px;max-width:16em;
  text-shadow:0 2px 18px rgba(23,16,43,.55);
}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__sub{font-size:16px;color:rgba(255,255,255,.82);max-width:44em;line-height:1.85;margin-bottom:28px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero__trust{
  display:flex;flex-wrap:wrap;gap:10px 26px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
}
.hero__trust span{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.76)}
.hero__trust i{color:var(--mint);font-size:13px}
.hero__badge{
  position:absolute;right:22px;top:56px;background:var(--coral);color:#fff;font-size:12.5px;font-weight:600;
  padding:8px 16px;border-radius:var(--r-pill);box-shadow:0 10px 24px rgba(255,92,77,.34);
}
@media (min-width:768px){
  .hero__inner{padding:84px 0 62px}
  .hero h1{font-size:36px}
  .hero__sub{font-size:17px}
}
@media (min-width:992px){
  .hero h1{font-size:44px;max-width:14em}
}

/* ============ 通用板块 ============ */
.section{padding:52px 0}
@media (min-width:768px){.section{padding:80px 0}}
.section--tight{padding:44px 0}
.sec-head{margin-bottom:30px;max-width:760px}
.sec-head h2{font-size:21px;margin-bottom:12px}
@media (min-width:768px){.sec-head h2{font-size:26px}}
.sec-head p{color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:600;color:var(--violet);
  background:var(--violet-soft);padding:5px 13px;border-radius:var(--r-pill);margin-bottom:14px;letter-spacing:.04em;
}

/* ============ 优惠阶梯 ============ */
.ladder{position:relative;display:flex;flex-direction:column;gap:20px}
.ladder::before{
  content:"";position:absolute;left:16px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,var(--violet),var(--mint));border-radius:2px;opacity:.55;
}
.step{
  position:relative;margin-left:34px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(122,59,255,.4)}
.step__num{
  position:absolute;left:-34px;top:22px;width:34px;height:34px;border-radius:50%;
  background:var(--gold);color:#4A3200;font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;border:3px solid var(--bg);
  box-shadow:0 4px 12px rgba(255,197,61,.4);
}
.step h3{font-size:19px;margin-bottom:8px}
.step__desc{color:var(--text-2);font-size:15.5px;margin-bottom:12px}
.step__meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chip{font-size:12.5px;color:var(--violet);background:var(--violet-soft);padding:4px 11px;border-radius:var(--r-pill)}
.step__link{font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.step__link i{font-size:12px;transition:transform .2s ease}
.step__link:hover i{transform:translateX(4px)}
@media (min-width:992px){
  .ladder{gap:26px}
  .step:nth-child(1){margin-left:34px}
  .step:nth-child(2){margin-left:74px}
  .step:nth-child(3){margin-left:114px}
  .step{padding:26px 28px}
}

/* ============ 对比矩阵 ============ */
.matrix-wrap{overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
.matrix{min-width:720px;display:flex;flex-direction:column;gap:0}
.matrix-row{display:grid;grid-template-columns:1.35fr repeat(4,1fr);align-items:stretch}
.matrix-cell{
  padding:14px 14px;font-size:14.5px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:8px;background:transparent;
}
.matrix-row--head .matrix-cell{
  border-bottom:1px solid var(--line);font-weight:700;font-size:15px;padding-top:18px;padding-bottom:18px;
  background:var(--weak);color:var(--text);
}
.matrix-row--head .matrix-cell:first-child{border-radius:12px 0 0 0}
.matrix-row--head .matrix-cell:last-child{border-radius:0 12px 0 0}
.matrix-cell--label{color:var(--text-2);background:var(--weak);font-weight:600;border-right:1px solid var(--line)}
.matrix-cell--col{justify-content:center;text-align:center;flex-direction:column;gap:4px}
.matrix-cell--col.is-on{background:rgba(122,59,255,.05)}
.matrix-row--head .matrix-cell.is-on{background:var(--violet-soft);color:var(--violet);position:relative}
.matrix-row--head .matrix-cell.is-on::after{
  content:"";position:absolute;inset:auto 0 0 0;height:2px;background:var(--violet);
}
.matrix-badge{
  font-size:11.5px;background:var(--violet);color:#fff;padding:2px 9px;border-radius:var(--r-pill);font-weight:600;
}
.matrix-ico--yes{color:var(--mint);font-size:15px}
.matrix-ico--no{color:var(--faint);font-size:15px}
.matrix-note{font-size:13px;color:var(--text-2);margin-top:16px;line-height:1.8}

/* ============ 限时通栏 ============ */
.flash{background:var(--ink-2);border-radius:20px;padding:24px 22px;color:#fff;
  display:flex;flex-direction:column;gap:20px}
.flash__label{font-size:12.5px;color:var(--mint);letter-spacing:.08em;margin-bottom:8px}
.flash__text{font-size:17px;font-weight:600;line-height:1.6}
.flash__clock{display:flex;gap:10px;align-items:center}
.clock-box{
  min-width:62px;padding:10px 6px;border-radius:12px;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.12);text-align:center;
}
.clock-box b{display:block;font-size:24px;font-weight:700;letter-spacing:.06em;font-variant-numeric:tabular-nums;color:#fff}
.clock-box span{font-size:11.5px;color:rgba(255,255,255,.6)}
.flash__tip{font-size:12.5px;color:rgba(255,255,255,.6);margin-top:10px}
@media (min-width:768px){
  .flash{flex-direction:row;align-items:center;justify-content:space-between;padding:26px 32px;gap:28px}
  .flash__main{flex:1}
}

/* ============ 图文交替 ============ */
.feature{display:flex;flex-direction:column;gap:22px;align-items:center}
.feature + .feature{margin-top:44px}
.feature__media{width:100%;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);position:relative}
.feature__media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .4s ease}
.feature__media:hover img{transform:scale(1.03)}
.feature__body{width:100%}
.feature__body h3{font-size:19px;margin-bottom:12px}
.feature__body p{color:var(--text-2);font-size:16px}
.feature__list{list-style:none;padding:0;margin:16px 0 18px}
.feature__list li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px;color:var(--text);margin-bottom:10px;line-height:1.75}
.feature__list i{color:var(--mint);margin-top:6px;font-size:14px}
@media (min-width:768px){
  .feature{flex-direction:row;gap:40px}
  .feature__media,.feature__body{flex:1 1 0;min-width:0}
  .feature--rev{flex-direction:row-reverse}
}

/* ============ 卡片列表 ============ */
.card-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:576px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.card-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(122,59,255,.36)}
.card__media{overflow:hidden;aspect-ratio:16/10;background:var(--weak)}
.card__media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .24s ease}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card__badge{
  align-self:flex-start;font-size:12.5px;color:var(--violet);background:var(--violet-soft);
  padding:4px 12px;border-radius:var(--r-pill);margin-bottom:12px;font-weight:600;
}
.card h3{font-size:17.5px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover h3{color:var(--violet)}
.card h3 a{color:inherit}
.card__desc{font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--text-2);padding-top:14px;border-top:1px solid var(--line);
}
.card__foot a{display:inline-flex;align-items:center;gap:6px;font-weight:600}
.empty-state{
  min-height:220px;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--text-2);
}
.empty-state i{font-size:30px;color:var(--faint)}
.empty-state p{font-size:15.5px;margin:0}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .2s ease}
.faq-item.is-open{border-color:rgba(122,59,255,.42)}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;cursor:pointer;
  padding:18px 20px;font-size:17px;font-weight:600;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;
}
.faq-q:hover{color:var(--violet)}
.faq-q .faq-ico{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;background:var(--violet-soft);color:var(--violet);
  display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform .24s ease;
}
.faq-item.is-open .faq-ico{transform:rotate(180deg);background:var(--violet);color:#fff}
.faq-a{display:none;padding:0 20px 20px;font-size:16px;line-height:1.85;color:var(--text-2);border-left:3px solid var(--violet)}
.faq-item.is-open .faq-a{display:block}

/* ============ 咨询表单 ============ */
.contact-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:900px){.contact-grid{grid-template-columns:1.15fr .85fr;gap:30px}}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh-1)}
@media (min-width:768px){.form-card{padding:30px 28px}}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--text)}
.field label .req{color:var(--coral);margin-left:4px}
.field input[type="text"],.field input[type="tel"],.field input[type="email"],.field select,.field textarea{
  width:100%;min-height:46px;padding:11px 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--text);font-size:15.5px;transition:border-color .2s ease,box-shadow .2s ease;
  appearance:none;
}
.field textarea{min-height:112px;line-height:1.8;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--violet);box-shadow:0 0 0 4px rgba(122,59,255,.12);outline:none;
}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--coral);box-shadow:0 0 0 4px rgba(255,92,77,.1)}
.field__err{display:none;font-size:12.5px;color:var(--coral);margin-top:6px}
.field.has-error .field__err{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);margin:6px 0 18px}
.check-row input{margin-top:5px;width:17px;height:17px;accent-color:var(--violet);flex:0 0 auto}
.trust-card{background:var(--ink);color:#fff;border-radius:var(--r-card);padding:26px 24px;
  box-shadow:0 0 0 1px rgba(255,255,255,.08),0 18px 40px rgba(23,16,43,.24)}
.trust-card h3{font-size:18px;margin-bottom:14px;color:#fff}
.trust-card p{font-size:14.5px;color:rgba(255,255,255,.7);line-height:1.85}
.trust-list{list-style:none;padding:0;margin:18px 0 0}
.trust-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.86);margin-bottom:12px;line-height:1.7}
.trust-list i{color:var(--mint);margin-top:6px;font-size:13px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:auto;padding:48px 0 26px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:34px}}
.footer-brand{display:flex;align-items:flex-start;gap:11px;margin-bottom:16px}
.footer-brand .brand__mark{flex-basis:34px;width:34px;height:34px;font-size:15px}
.footer-brand strong{color:#fff;font-size:15.5px;line-height:1.4;display:block}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14.5px}
.footer-col a:hover{color:var(--mint)}
.footer-desc{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:34em}
.footer-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;gap:8px;font-size:13px;color:rgba(255,255,255,.5);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

/* ============ 其它 ============ */
.section-band{background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%)}
.divider{height:1px;background:var(--line);margin:0}
.badge-coral{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  color:#fff;background:var(--coral);padding:4px 12px;border-radius:var(--r-pill);
}

/* roulang page: article */
:root{
  --purple:#7A3BFF;
  --purple-deep:#5B22D8;
  --purple-light:#EFE9FF;
  --mint:#00D6B4;
  --coral:#FF5C4D;
  --amber:#FFC53D;
  --ink:#17102B;
  --ink-2:#241A3D;
  --bg:#F6F4FB;
  --card:#FFFFFF;
  --soft:#EFEBFA;
  --line:#E4DFF2;
  --text:#241C33;
  --muted:#6A6280;
  --white:#FFFFFF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,16,43,.06),0 8px 24px rgba(23,16,43,.07);
  --sh-2:0 12px 32px rgba(122,59,255,.16);
  --grad:linear-gradient(135deg,#7A3BFF 0%,#00D6B4 100%);
  --sidebar:240px;
  --gap:24px;
  --sec:64px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:0;font-weight:700}
p{margin:0 0 1.1em}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--purple);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;
}
.skip-link:focus{left:0}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section--tight{padding:40px 0}

/* ---------- 左侧导航 ---------- */
.app-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);z-index:90;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:22px;
  padding:24px 18px 20px;overflow-y:auto;
  transition:transform .28s ease;
}
.app-nav__top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.app-nav__close{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;color:var(--muted);
}
.app-nav__close:hover{color:var(--purple);border-color:var(--purple)}
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{
  width:38px;height:38px;flex:none;border-radius:12px;background:var(--grad);
  color:#fff;display:grid;place-items:center;font-size:17px;
  box-shadow:0 6px 18px rgba(122,59,255,.28);
}
.brand__name{font-size:16px;font-weight:700;line-height:1.3}

.app-nav__menu{display:flex;flex-direction:column;gap:4px}
.app-nav__label{font-size:12.5px;color:var(--muted);padding:0 12px 6px}
.nav-item{
  display:flex;align-items:center;gap:10px;min-height:44px;padding:0 12px;
  border-radius:10px;font-size:15px;color:var(--muted);
  border-left:3px solid transparent;transition:background .2s,color .2s,border-color .2s;
}
.nav-item i{width:20px;text-align:center;font-size:16px}
.nav-item:hover{background:var(--purple-light);color:var(--text)}
.nav-item.is-active{
  background:var(--purple-light);color:var(--purple);
  border-left-color:var(--purple);font-weight:600;
}
.app-nav__cta{
  margin-top:auto;background:var(--ink-2);color:#fff;border-radius:var(--r-card);
  padding:18px;border:1px solid rgba(255,255,255,.08);
}
.app-nav__cta-title{margin:0 0 6px;font-size:15px;font-weight:700;color:#fff}
.app-nav__cta-text{margin:0 0 14px;font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.72)}
.app-nav__scrim{
  position:fixed;inset:0;background:rgba(23,16,43,.5);z-index:85;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.app-nav__scrim.is-open{opacity:1;visibility:visible}

/* ---------- 顶部移动栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:80;height:56px;
  align-items:center;gap:12px;padding:0 16px;
  background:#fff;border-bottom:1px solid var(--line);
}
.topbar__brand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;min-width:0}
.topbar__brand span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar__spacer{flex:1}
.icon-btn{
  width:44px;height:44px;flex:none;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--text);
  transition:border-color .2s,color .2s,background .2s;
}
.icon-btn:hover{border-color:var(--purple);color:var(--purple);background:var(--purple-light)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn--grad{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(122,59,255,.28)}
.btn--grad:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--ghost{background:#fff;color:var(--purple);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--purple);background:var(--purple-light)}
.btn--ghost-invert{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn--ghost-invert:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--sm{min-height:38px;padding:0 16px;font-size:14px}
.btn--pill{border-radius:var(--r-pill)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  padding:4px 12px;border-radius:var(--r-pill);line-height:1.6;
}
.badge--purple{background:var(--purple-light);color:var(--purple)}
.badge--mint{background:rgba(0,214,180,.13);color:#008E77}
.badge--coral{background:rgba(255,92,77,.13);color:#D63426}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--soft);color:var(--muted);font-size:13px;transition:background .2s,color .2s;
}
.tag:hover{background:var(--purple-light);color:var(--purple)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:18px 0 14px;font-size:13.5px;color:var(--muted);
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--purple)}
.breadcrumb .sep{color:#C9C3D8}
.breadcrumb .current{color:var(--purple);font-weight:600}

/* ---------- 文章头部 ---------- */
.article-head{max-width:880px;padding:4px 0 24px}
.article-title{font-size:32px;margin:14px 0 0}
.article-meta{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:14px;font-size:13.5px;color:var(--muted)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item i{color:var(--purple)}

.article-cover{
  margin:0 0 32px;border-radius:var(--r-img);overflow:hidden;
  box-shadow:var(--sh-1);border:1px solid var(--line);background:#fff;
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 正文阅读区 ---------- */
.prose{max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--text)}
.prose > *:first-child{margin-top:0}
.prose h2{
  font-size:26px;margin:38px 0 16px;padding-left:14px;
  border-left:4px solid var(--purple);
}
.prose h3{font-size:19px;margin:28px 0 12px}
.prose h4{font-size:16px;margin:22px 0 10px;color:var(--muted)}
.prose p{margin:0 0 1.1em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.35em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.45em;line-height:1.85}
.prose ul li::marker{color:var(--purple)}
.prose ol li::marker{color:var(--purple);font-weight:700}
.prose blockquote{
  margin:22px 0;padding:16px 22px;background:var(--purple-light);
  border-left:3px solid var(--purple);border-radius:0 12px 12px 0;
  color:#4C4460;font-size:16px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose a{color:var(--purple);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--mint)}
.prose img{border-radius:var(--r-img);margin:18px 0 8px}
.prose figure{margin:22px 0}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.prose hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.prose th{background:var(--soft);font-weight:600}
.prose code{
  background:var(--soft);border-radius:6px;padding:2px 6px;
  font-size:14px;color:var(--purple-deep);
}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;padding:32px;text-align:center;color:var(--muted);
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state i{font-size:30px;color:var(--purple)}
.empty-state p{margin:0;font-size:16px}

/* ---------- 文末标签与分享 ---------- */
.article-foot{
  max-width:760px;margin:44px auto 0;padding-top:26px;border-top:1px solid var(--line);
}
.article-foot__label{font-size:13.5px;color:var(--muted);margin:0 0 12px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.article-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* ---------- 相关推荐 ---------- */
.section-head{max-width:680px;margin-bottom:28px}
.section-head h2{font-size:26px}
.section-head p{color:var(--muted);font-size:15px;margin:10px 0 0}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{
  display:flex;gap:14px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:14px;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.post-card:hover{transform:translateY(-3px);border-color:var(--purple);box-shadow:var(--sh-2)}
.post-card img{width:96px;height:96px;border-radius:12px;object-fit:cover;flex:none}
.post-card h3{font-size:16px;line-height:1.5;margin:0 0 8px}
.post-card:hover h3{color:var(--purple)}
.post-card .post-meta{font-size:13px;color:var(--muted)}

/* ---------- 返回入口 ---------- */
.back-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:34px}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;
  border-radius:20px;padding:38px;
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  border:1px solid rgba(255,255,255,.08);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-90px;width:280px;height:280px;
  background:radial-gradient(circle,rgba(122,59,255,.55),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:26px;color:#fff;margin-bottom:10px}
.cta-band p{margin:0;font-size:15px;color:rgba(255,255,255,.72);max-width:620px}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:64px;padding:56px 0 26px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:34px;
  padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin:0;max-width:440px}
.footer-col h4{font-size:14px;color:#fff;margin:0 0 14px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--mint)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding-top:20px;font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (min-width:992px){
  body{padding-left:var(--sidebar)}
  .app-nav__scrim{display:none}
}
@media (min-width:1440px){
  :root{--sidebar:268px}
}
@media (max-width:991px){
  :root{--sec:52px}
  .app-nav{width:min(84vw,320px);transform:translateX(-100%);box-shadow:0 24px 60px rgba(23,16,43,.28)}
  .app-nav.is-open{transform:translateX(0)}
  .app-nav__close{display:grid;place-items:center}
  .topbar{display:flex}
  body.nav-open{overflow:hidden}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid > div:first-child{grid-column:1 / -1}
}
@media (max-width:767px){
  .article-title{font-size:24px}
  .prose h2{font-size:21px}
  .section-head h2,.cta-band h2{font-size:21px}
  .cta-band{padding:26px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:44px 0 22px}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .breadcrumb{padding:14px 0 10px}
  .post-card img{width:84px;height:84px}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand:#7A3BFF;
  --brand-deep:#5B22D8;
  --brand-soft:#EFE9FF;
  --mint:#00D6B4;
  --coral:#FF5C4D;
  --amber:#FFC53D;
  --ink:#17102B;
  --ink-2:#241A3D;
  --bg:#F6F4FB;
  --card:#FFFFFF;
  --weak:#EFEBFA;
  --line:#E4DFF2;
  --text:#241C33;
  --muted:#6A6280;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(23,16,43,.06),0 8px 24px rgba(23,16,43,.07);
  --shadow-2:0 12px 32px rgba(122,59,255,.16);
  --grad:linear-gradient(135deg,#7A3BFF 0%,#00D6B4 100%);
  --nav-w:240px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:56px;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
button{font:inherit;cursor:pointer}
summary{cursor:pointer;list-style:none}
summary::-webkit-details-marker{display:none}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px}
h1,h2,h3,h4{line-height:1.35;letter-spacing:0;color:var(--text);font-weight:700}
h1{font-size:32px}
h2{font-size:26px}
h3{font-size:19px}
h4{font-size:16px}
p{line-height:1.9}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 16px;
}
.section{padding:52px 0}
.section--tight{padding:40px 0}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;line-height:1;
  text-decoration:none;cursor:pointer;
  transition:transform .24s ease,box-shadow .24s ease,background-color .24s ease,color .24s ease,border-color .24s ease;
}
.btn--primary{background-image:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(122,59,255,.26)}
.btn--primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 32px rgba(122,59,255,.32)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.62)}
.btn--ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn--outline{background:#fff;color:var(--brand);border-color:rgba(122,59,255,.5)}
.btn--outline:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px)}
.btn--coral{background:var(--coral);color:#fff;box-shadow:0 8px 22px rgba(255,92,77,.28)}
.btn--coral:hover{background:#f04535;color:#fff;transform:translateY(-2px)}
.btn--sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.btn--block{display:flex;width:100%}
.btn:active{transform:translateY(0)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;line-height:1.6;
  background:var(--brand-soft);color:var(--brand-deep);
}
.badge--mint{background:rgba(0,214,180,.14);color:#008B76}
.badge--coral{background:var(--coral);color:#fff}
.badge--outline{background:transparent;border:1px solid rgba(255,255,255,.4);color:#fff}

.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.tag.is-active{background:var(--brand);border-color:var(--brand);color:#fff}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  border-bottom:1px solid rgba(122,59,255,.35);
  padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.text-link:hover{color:var(--mint);border-color:var(--mint)}

.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px}

/* ============ 左侧 App Shell ============ */
.app-nav{
  position:fixed;top:0;left:0;bottom:0;z-index:80;
  width:84vw;max-width:320px;
  background:#fff;border-right:1px solid var(--line);
  transform:translateX(-100%);
  transition:transform .28s ease;
  overflow-y:auto;
}
.app-nav.is-open{transform:translateX(0)}
.app-nav__inner{display:flex;flex-direction:column;min-height:100%;padding:22px 18px}
.brand{display:flex;align-items:center;gap:12px;padding:6px 6px 18px;border-bottom:1px solid var(--line)}
.brand__mark{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  background-image:var(--grad);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:0 6px 18px rgba(122,59,255,.28);
}
.brand__text{display:flex;flex-direction:column;line-height:1.3}
.brand__text strong{font-size:15px;color:var(--text);letter-spacing:0}
.brand__text em{font-style:normal;font-size:12.5px;color:var(--muted)}
.app-nav__menu{display:flex;flex-direction:column;gap:4px;margin-top:20px}
.app-nav__label{
  padding:0 12px 8px;font-size:12.5px;color:var(--muted);letter-spacing:.04em;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:46px;padding:10px 12px;border-radius:10px;
  font-size:15px;color:var(--muted);
  transition:background-color .2s ease,color .2s ease;
}
.nav-item i{width:20px;text-align:center;font-size:16px;color:currentColor}
.nav-item:hover{background:var(--brand-soft);color:var(--brand-deep)}
.nav-item.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.app-nav__cta{
  margin-top:auto;padding:18px 14px;border-radius:14px;
  background:var(--ink-2);color:rgba(255,255,255,.72);
}
.app-nav__cta p{font-size:13.5px;line-height:1.75;margin-bottom:14px}
.app-nav__service{
  display:flex;align-items:center;justify-content:center;gap:8px;
  margin-top:12px;padding:12px;border-radius:10px;
  font-size:14px;color:#fff;background:rgba(255,255,255,.08);
  transition:background-color .2s ease;
}
.app-nav__service:hover{background:rgba(255,255,255,.16);color:#fff}

.nav-overlay{
  position:fixed;inset:0;z-index:70;
  background:rgba(23,16,43,.5);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.nav-overlay.is-open{opacity:1;visibility:visible}

.mobile-topbar{
  position:fixed;top:0;left:0;right:0;z-index:75;
  height:56px;display:flex;align-items:center;gap:10px;
  padding:0 12px;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(23,16,43,.05);
}
.hamburger{
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--brand);font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;
}
.hamburger:hover{background:var(--brand-soft)}
.mobile-brand{
  flex:1;font-size:15px;font-weight:700;color:var(--text);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 顶部横幅 ============ */
.hero--cat{
  position:relative;overflow:hidden;
  background:var(--ink);
}
.hero__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(23,16,43,.86) 0%,rgba(23,16,43,.62) 52%,rgba(23,16,43,.38) 100%);
}
.hero__inner{position:relative;z-index:2;padding:56px 16px 48px;max-width:1200px;margin:0 auto}
.hero__badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.hero--cat h1{
  color:#fff;font-size:28px;line-height:1.34;max-width:760px;
  margin-bottom:14px;
}
.hero__sub{
  color:rgba(255,255,255,.78);font-size:16px;max-width:620px;
  margin-bottom:26px;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px}
.trust{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:30px;
  padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
}
.trust li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:rgba(255,255,255,.72);
}
.trust li i{color:var(--mint);font-size:14px}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:16px 0;font-size:13.5px;color:var(--muted);
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs span.sep{color:#C9C3D8}
.crumbs .current{color:var(--brand);font-weight:600}

/* ============ 指标条 ============ */
.metrics{
  display:grid;grid-template-columns:1fr;gap:14px;
}
.metric{
  padding:20px 22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  border-left:3px solid transparent;
  background-image:linear-gradient(#fff,#fff),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.metric h3{font-size:16px;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.metric h3 i{color:var(--brand);font-size:15px}
.metric p{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ 分类主体布局 ============ */
.cat-layout{display:grid;grid-template-columns:1fr;gap:28px}
.anchor-nav{
  display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;
  -webkit-overflow-scrolling:touch;
}
.anchor-nav__title{display:none}
.anchor-nav a{
  flex:0 0 auto;padding:8px 14px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--muted);white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.anchor-nav a:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:rgba(122,59,255,.35)}
.anchor-nav a.is-active{background:var(--brand);border-color:var(--brand);color:#fff}

.cat-main > * + *{margin-top:20px}

.route-item{
  display:grid;grid-template-columns:1fr;gap:16px;
  padding:20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.route-item:hover{transform:translateY(-3px);border-color:rgba(122,59,255,.45);box-shadow:var(--shadow-2)}
.route-item__media{overflow:hidden;border-radius:12px;background:var(--weak)}
.route-item__media img{
  width:100%;height:170px;object-fit:cover;
  transition:transform .24s ease;
}
.route-item:hover .route-item__media img{transform:scale(1.03)}
.route-item__body h3{margin-bottom:8px;display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.route-item__body p{font-size:15px;color:var(--muted);margin-bottom:12px}
.route-item__meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.route-item__meta span{
  font-size:12.5px;color:var(--brand-deep);background:var(--brand-soft);
  border-radius:var(--radius-pill);padding:3px 10px;
}

.divider{
  height:1px;margin:40px 0;
  background:linear-gradient(90deg,transparent,var(--line) 18%,var(--line) 82%,transparent);
}

/* ============ 步骤卡 ============ */
.steps{margin-top:4px}
.step-card{
  height:100%;padding:24px 22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.step-card__num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;margin-bottom:14px;
  background:var(--amber);color:#4A3400;font-weight:700;font-size:15px;
}
.step-card h3{font-size:17px;margin-bottom:8px}
.step-card p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ============ FAQ ============ */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:0 18px;margin-bottom:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(122,59,255,.35)}
.faq-item[open]{border-left:3px solid var(--brand);box-shadow:var(--shadow-1)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:500;color:var(--brand);
  line-height:1;
}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-body{
  padding:0 0 20px;font-size:16px;line-height:1.85;color:var(--muted);
  border-top:1px solid var(--weak);padding-top:16px;
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  padding:36px 26px;
  background-image:linear-gradient(135deg,rgba(23,16,43,.94),rgba(36,26,61,.9)),var(--grad);
  box-shadow:0 18px 44px rgba(23,16,43,.24);
}
.cta-band h2{color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.76);font-size:15.5px;max-width:640px;margin-bottom:22px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band__note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.55)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:56px;background:var(--ink);color:rgba(255,255,255,.72);
  padding:44px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand strong{color:#fff;font-size:16px}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:420px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-col a:hover{color:var(--mint)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:32px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 断点 ============ */
@media (min-width:576px){
  .container{padding:0 20px}
  .hero--cat h1{font-size:34px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .route-item{grid-template-columns:200px 1fr;align-items:start}
  .route-item__media img{height:130px}
}
@media (min-width:768px){
  body{font-size:17px}
  .section{padding:64px 0}
  .hero__inner{padding:72px 20px 60px}
  .hero--cat h1{font-size:40px}
  .metrics{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr}
  .cta-band{padding:44px 40px}
}
@media (min-width:992px){
  body{padding-left:var(--nav-w);padding-top:0}
  .app-nav{
    width:var(--nav-w);max-width:none;transform:none;
    box-shadow:none;
  }
  .nav-overlay,.mobile-topbar{display:none}
  .cat-layout{grid-template-columns:200px 1fr;gap:40px;align-items:start}
  .anchor-nav{
    position:sticky;top:24px;flex-direction:column;gap:4px;
    overflow:visible;background:#fff;border:1px solid var(--line);
    border-radius:14px;padding:16px 12px;box-shadow:var(--shadow-1);
  }
  .anchor-nav__title{
    display:block;padding:0 10px 10px;font-size:12.5px;
    color:var(--muted);letter-spacing:.04em;
  }
  .anchor-nav a{
    border:0;border-radius:9px;padding:9px 10px;font-size:14px;
    background:transparent;white-space:normal;
  }
  .anchor-nav a:hover{background:var(--brand-soft);border:0}
  .anchor-nav a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
  .route-item{grid-template-columns:220px 1fr;padding:22px;gap:22px}
  .route-item__media img{height:140px}
  .section{padding:80px 0}
}
@media (min-width:1200px){
  .container{padding:0 24px}
  .hero__inner{padding:84px 24px 68px}
  .hero--cat h1{font-size:44px}
  .route-item{padding:26px;gap:26px}
  .route-item__media img{height:150px}
}
@media (min-width:1440px){
  :root{--nav-w:268px}
}

/* roulang page: category2 */
:root{
  --primary:#7A3BFF;
  --primary-dark:#5B22D8;
  --primary-soft:#EFE9FF;
  --mint:#00D6B4;
  --coral:#FF5C4D;
  --ink:#17102B;
  --ink-2:#241A3D;
  --bg:#F6F4FB;
  --card:#FFFFFF;
  --weak:#EFEBFA;
  --line:#E4DFF2;
  --text:#241C33;
  --muted:#6A6280;
  --grad:linear-gradient(135deg,#7A3BFF 0%,#00D6B4 100%);
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,16,43,.06),0 8px 24px rgba(23,16,43,.07);
  --sh-2:0 12px 32px rgba(122,59,255,.16);
  --shell:240px;
  --sec:80px;
}
@media (min-width:1440px){ :root{ --shell:268px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
}
img{ max-width:100%; display:block; border:0; }
a{ color:var(--primary); text-decoration:none; transition:color .2s ease; }
a:hover{ color:var(--mint); }
button{ font:inherit; cursor:pointer; border:0; background:none; color:inherit; }
h1,h2,h3,h4{ margin:0; line-height:1.35; letter-spacing:0; color:var(--text); font-weight:700; }
p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }
:focus-visible{ outline:2px solid var(--mint); outline-offset:2px; border-radius:4px; }

.container{ width:100%; max-width:1200px; margin:0 auto; padding:0 24px; }
.section{ padding:var(--sec) 0; }
.section--tight{ padding:56px 0; }

/* ============ 移动顶栏 ============ */
.topbar{
  position:sticky; top:0; z-index:60;
  height:56px; display:flex; align-items:center; gap:12px;
  padding:0 16px; background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(6px);
}
.topbar__hamburger{
  width:44px; height:44px; display:inline-flex; align-items:center; justify-content:center;
  border-radius:10px; color:var(--primary); font-size:19px; background:var(--primary-soft);
  transition:background .2s ease;
}
.topbar__hamburger:hover{ background:#E4DBFF; }
.topbar__brand{
  flex:1; font-size:15px; font-weight:700; color:var(--text);
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.topbar__cta{
  display:inline-flex; align-items:center; height:36px; padding:0 14px;
  border-radius:var(--r-pill); background:var(--grad); color:#fff;
  font-size:13.5px; font-weight:600; letter-spacing:.02em;
}
.topbar__cta:hover{ color:#fff; box-shadow:var(--sh-2); }

/* ============ 左侧导航 ============ */
.app-shell{
  position:fixed; top:0; left:0; bottom:0; z-index:80;
  width:84vw; max-width:320px;
  background:var(--ink);
  transform:translateX(-102%);
  transition:transform .28s ease;
  overflow-y:auto;
  border-right:1px solid rgba(255,255,255,.06);
}
.app-shell.is-open{ transform:translateX(0); }
.app-shell__inner{ display:flex; flex-direction:column; min-height:100%; padding:22px 18px 26px; gap:22px; }

.brand{ display:flex; align-items:center; gap:12px; }
.brand__mark{
  width:42px; height:42px; flex:0 0 42px; border-radius:12px;
  display:inline-flex; align-items:center; justify-content:center;
  background:var(--grad); color:#fff; font-size:18px;
  box-shadow:0 0 0 1px rgba(255,255,255,.08),0 8px 22px rgba(122,59,255,.35);
}
.brand__text{ display:flex; flex-direction:column; min-width:0; }
.brand__text strong{ font-size:15.5px; color:#fff; letter-spacing:.01em; }
.brand__text em{ font-style:normal; font-size:12.5px; color:rgba(255,255,255,.55); margin-top:2px; }

.app-nav{ display:flex; flex-direction:column; gap:6px; }
.app-nav__label{
  font-size:12.5px; color:rgba(255,255,255,.45); padding:0 4px 6px; letter-spacing:.08em;
}
.nav-item{
  position:relative;
  display:flex; align-items:center; gap:12px;
  min-height:44px; padding:11px 14px;
  border-radius:10px; font-size:15px;
  color:rgba(255,255,255,.72);
  transition:background .2s ease,color .2s ease;
}
.nav-item i{ width:20px; text-align:center; font-size:16px; }
.nav-item:hover{ background:rgba(255,255,255,.08); color:#fff; }
.nav-item.is-active{
  background:var(--primary-soft); color:var(--primary-dark); font-weight:600;
}
.nav-item.is-active::before{
  content:""; position:absolute; left:0; top:9px; bottom:9px; width:3px;
  border-radius:0 3px 3px 0; background:var(--primary);
}

.shell-cta{
  margin-top:auto;
  background:var(--ink-2);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-card);
  padding:18px;
}
.shell-cta p{ font-size:13.5px; line-height:1.75; color:rgba(255,255,255,.72); margin-bottom:14px; }
.shell-help{
  display:flex; align-items:center; gap:12px;
  padding:14px; border-radius:var(--r-card);
  background:rgba(0,214,180,.08);
  border:1px solid rgba(0,214,180,.22);
}
.shell-help i{ color:var(--mint); font-size:17px; }
.shell-help strong{ display:block; font-size:13.5px; color:#fff; }
.shell-help span{ font-size:12.5px; color:rgba(255,255,255,.6); }

.shell-mask{
  position:fixed; inset:0; z-index:70;
  background:rgba(23,16,43,.5);
}
body.no-scroll{ overflow:hidden; }

/* ============ 按钮 ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  min-height:46px; padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px; font-weight:600; letter-spacing:.02em;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{ background:var(--grad); color:#fff; box-shadow:0 8px 22px rgba(122,59,255,.28); }
.btn--primary:hover{ color:#fff; transform:translateY(-2px); box-shadow:0 12px 30px rgba(122,59,255,.34); }
.btn--primary:active{ transform:translateY(0); }
.btn--outline{ background:#fff; color:var(--primary); border:1px solid var(--line); }
.btn--outline:hover{ color:var(--primary-dark); border-color:rgba(122,59,255,.45); background:var(--primary-soft); }
.btn--ghost-light{ background:rgba(255,255,255,.06); color:#fff; border:1px solid rgba(255,255,255,.35); }
.btn--ghost-light:hover{ color:#fff; background:rgba(255,255,255,.14); }
.btn--coral{ background:var(--coral); color:#fff; box-shadow:0 8px 22px rgba(255,92,77,.28); }
.btn--coral:hover{ color:#fff; transform:translateY(-2px); }
.btn--block{ width:100%; }
.btn--sm{ min-height:40px; padding:0 16px; font-size:13.5px; }

/* ============ 面包屑 ============ */
.crumbs{
  display:flex; flex-wrap:wrap; align-items:center; gap:8px;
  font-size:13.5px; color:var(--muted); margin-bottom:18px;
}
.crumbs span{ color:#C9C3D8; }
.crumbs a{ color:var(--muted); }
.crumbs a:hover{ color:var(--primary); }
.crumbs em{ font-style:normal; color:var(--primary); font-weight:600; }

/* ============ 分类头图区 ============ */
.cat-hero{
  position:relative;
  padding:44px 0 60px;
  background:
    radial-gradient(900px 380px at 88% -10%, rgba(0,214,180,.20), transparent 62%),
    radial-gradient(760px 360px at 6% 6%, rgba(122,59,255,.20), transparent 60%),
    linear-gradient(160deg,#EFE9FF 0%,#F6F4FB 58%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::before{
  content:""; position:absolute; inset:0; pointer-events:none; opacity:.5;
  background-image:linear-gradient(rgba(122,59,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(122,59,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
}
.cat-hero .container{ position:relative; z-index:1; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  height:30px; padding:0 14px; margin-bottom:16px;
  border-radius:var(--r-pill);
  background:#fff; border:1px solid var(--line);
  font-size:12.5px; font-weight:600; color:var(--primary-dark); letter-spacing:.04em;
}
.eyebrow::before{ content:""; width:7px; height:7px; border-radius:50%; background:var(--mint); }
.cat-hero h1{
  font-size:32px; line-height:1.4; max-width:900px;
}
.cat-hero h1 span{
  background:linear-gradient(135deg,#7A3BFF 0%,#00D6B4 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.cat-hero__lead{
  margin-top:16px; max-width:820px;
  font-size:17px; line-height:1.9; color:var(--muted);
}
.cat-hero__tags{
  display:flex; flex-wrap:wrap; gap:10px; margin-top:26px;
}
.trust-chip{
  display:inline-flex; align-items:center; gap:8px;
  min-height:36px; padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.85); border:1px solid var(--line);
  font-size:13.5px; color:var(--text);
}
.trust-chip i{ color:var(--primary); font-size:13px; }
.cat-hero__actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:28px; }

/* ============ 筛选标签条 ============ */
.filter-bar{
  background:#fff; border-bottom:1px solid var(--line);
  padding:14px 0;
}
.filter-bar__scroll{
  display:flex; gap:10px; overflow-x:auto; padding-bottom:4px;
  scrollbar-width:none;
}
.filter-bar__scroll::-webkit-scrollbar{ display:none; }
.chip{
  flex:0 0 auto;
  min-height:40px; padding:0 18px;
  border-radius:var(--r-pill);
  background:var(--weak); color:var(--muted);
  font-size:14px; font-weight:600; white-space:nowrap;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.chip:hover{ background:var(--primary-soft); color:var(--primary-dark); }
.chip.is-active{
  background:var(--primary); color:#fff; border-color:var(--primary);
  box-shadow:0 8px 20px rgba(122,59,255,.24);
}

/* ============ 板块标题 ============ */
.section-head{ max-width:760px; margin-bottom:34px; }
.section-head h2{ font-size:26px; }
.section-head p{ margin-top:12px; color:var(--muted); font-size:16px; line-height:1.9; }
.section-head--center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ============ 玩法大图卡 ============ */
.game-grid{
  display:grid; grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px; align-items:start;
}
.game-card{
  background:var(--card); border:1px solid var(--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;
}
.game-card:hover{ transform:translateY(-3px); box-shadow:var(--sh-2); border-color:rgba(122,59,255,.35); }
.game-card__media{ overflow:hidden; background:var(--weak); }
.game-card__media img{
  width:100%; aspect-ratio:16/9; object-fit:cover;
  transition:transform .24s ease;
}
.game-card:nth-child(even) .game-card__media img{ aspect-ratio:4/3; }
.game-card:hover .game-card__media img{ transform:scale(1.03); }
.game-card__body{ padding:22px 24px 26px; }
.game-card__body h3{ font-size:19px; margin:12px 0 10px; }
.game-card__body p{ font-size:15.5px; color:var(--muted); line-height:1.85; }

.badge{
  display:inline-flex; align-items:center; height:26px; padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--primary-soft); color:var(--primary-dark);
  font-size:12.5px; font-weight:600; letter-spacing:.02em;
}
.badge--mint{ background:rgba(0,214,180,.14); color:#0A8F79; }
.badge--line{ background:#fff; border:1px solid var(--line); color:var(--muted); }
.badge-row{ display:flex; flex-wrap:wrap; gap:8px; }

.text-link{
  display:inline-flex; align-items:center; gap:8px;
  margin-top:16px; font-size:14px; font-weight:600; color:var(--primary);
}
.text-link i{ font-size:12px; transition:transform .2s ease; }
.text-link:hover{ color:var(--primary-dark); }
.text-link:hover i{ transform:translateX(3px); }

/* ============ 深色指标条 ============ */
.dark-strip{
  background:
    radial-gradient(700px 260px at 90% 0%, rgba(122,59,255,.35), transparent 60%),
    radial-gradient(600px 260px at 0% 100%, rgba(0,214,180,.18), transparent 62%),
    var(--ink-2);
  color:#fff;
  padding:64px 0;
}
.dark-strip h2{ color:#fff; font-size:26px; }
.dark-strip .section-head p{ color:rgba(255,255,255,.72); }
.metric-grid{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:20px; }
.metric{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.09);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:0 0 0 1px rgba(255,255,255,.02) inset,0 0 32px rgba(122,59,255,.12);
  transition:border-color .24s ease,transform .24s ease;
}
.metric:hover{ transform:translateY(-3px); border-color:rgba(0,214,180,.42); }
.metric__icon{
  width:44px; height:44px; border-radius:12px;
  display:inline-flex; align-items:center; justify-content:center;
  background:rgba(0,214,180,.14); color:var(--mint); font-size:17px; margin-bottom:16px;
}
.metric__k{ display:block; font-size:12.5px; letter-spacing:.06em; color:var(--mint); margin-bottom:8px; }
.metric strong{ display:block; font-size:19px; color:#fff; margin-bottom:10px; }
.metric p{ font-size:15px; line-height:1.85; color:rgba(255,255,255,.72); }

/* ============ 流程步骤 ============ */
.steps{ display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:20px; }
.step{
  position:relative;
  background:var(--card); border:1px solid var(--line);
  border-radius:var(--r-card); padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.step:hover{ transform:translateY(-3px); box-shadow:var(--sh-2); }
.step__num{
  width:36px; height:36px; border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center;
  background:var(--primary-soft); color:var(--primary-dark);
  font-size:14px; font-weight:700; margin-bottom:16px;
}
.step:nth-child(2) .step__num{ background:rgba(0,214,180,.16); color:#0A8F79; }
.step h3{ font-size:19px; margin-bottom:10px; }
.step p{ font-size:15px; color:var(--muted); line-height:1.85; }

/* ============ FAQ ============ */
.faq-list{ display:flex; flex-direction:column; gap:14px; max-width:900px; }
.faq-item{
  background:#fff; border:1px solid var(--line); border-radius:14px;
  overflow:hidden; transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{ border-color:rgba(122,59,255,.3); }
.faq-item.is-open{ border-color:rgba(122,59,255,.45); box-shadow:var(--sh-1); }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:20px 22px; text-align:left;
  font-size:17px; font-weight:600; color:var(--text);
  min-height:44px;
}
.faq-q:hover{ color:var(--primary-dark); }
.faq-q i{
  flex:0 0 auto; width:28px; height:28px; border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center;
  background:var(--weak); color:var(--primary); font-size:13px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.faq-item.is-open .faq-q i{ background:var(--primary); color:#fff; }
.faq-a{ display:none; padding:0 22px 22px; border-left:3px solid var(--primary); margin-left:22px; padding-left:18px; }
.faq-item.is-open .faq-a{ display:block; }
.faq-a p{ font-size:16px; line-height:1.85; color:var(--muted); }

/* ============ 咨询入口条 ============ */
.cta-band{
  background:
    radial-gradient(700px 280px at 12% 0%, rgba(122,59,255,.18), transparent 60%),
    linear-gradient(135deg,#EFE9FF 0%,#FFFFFF 65%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:60px 0;
}
.cta-band__inner{
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:26px;
}
.cta-band__text{ max-width:640px; }
.cta-band__text h2{ font-size:26px; }
.cta-band__text p{ margin-top:12px; color:var(--muted); font-size:16px; }
.cta-band__actions{ display:flex; flex-wrap:wrap; gap:12px; }
.cta-note{ font-size:13.5px; color:var(--muted); margin-top:12px; }

/* ============ 页脚 ============ */
.site-footer{ background:var(--ink); color:rgba(255,255,255,.72); padding:56px 0 26px; }
.footer-grid{
  display:grid; grid-template-columns:1.6fr 1fr 1fr; gap:36px;
  padding-bottom:32px; border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{ display:flex; align-items:center; gap:12px; margin-bottom:16px; }
.footer-brand strong{ color:#fff; font-size:16px; }
.footer-desc{ font-size:14.5px; line-height:1.9; max-width:440px; }
.footer-col h4{ font-size:14px; color:#fff; margin-bottom:14px; letter-spacing:.04em; }
.footer-col ul{ display:flex; flex-direction:column; gap:10px; }
.footer-col a{ color:rgba(255,255,255,.72); font-size:14.5px; }
.footer-col a:hover{ color:var(--mint); }
.footer-bottom{
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:12px;
  padding-top:22px; font-size:13px; color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (min-width:992px){
  body{ padding-left:var(--shell); }
  .app-shell{ width:var(--shell); max-width:none; transform:none; }
  .topbar{ display:none; }
  .shell-mask{ display:none !important; }
}
@media (max-width:1199px){
  .steps{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width:991px){
  :root{ --sec:52px; }
  .cat-hero{ padding:32px 0 44px; }
  .cat-hero h1{ font-size:26px; }
  .dark-strip{ padding:52px 0; }
  .metric-grid{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:28px; }
}
@media (max-width:767px){
  body{ font-size:16px; }
  .container{ padding:0 16px; }
  .cat-hero h1{ font-size:24px; }
  .section-head h2,.dark-strip h2,.cta-band__text h2{ font-size:21px; }
  .game-grid{ grid-template-columns:1fr; gap:16px; }
  .game-card:nth-child(even) .game-card__media img{ aspect-ratio:16/9; }
  .steps{ grid-template-columns:1fr; }
  .cta-band__inner{ flex-direction:column; align-items:flex-start; }
  .cta-band__actions .btn{ width:100%; }
  .footer-grid{ grid-template-columns:1fr; }
  .cat-hero__actions .btn{ width:100%; }
}
@media (max-width:575px){
  .game-card__body{ padding:18px 18px 22px; }
  .metric{ padding:22px 18px; }
  .faq-q{ padding:16px 16px; font-size:16px; }
  .faq-a{ margin-left:16px; padding:0 16px 18px 14px; }
}