/* roulang page: index */
:root{
  --bg-deep:#0E1014;
  --bg-deep-2:#161A22;
  --bg-page:#F5F6F9;
  --bg-card:#FFFFFF;
  --brand:#6C4CFF;
  --brand-hover:#5A3DE8;
  --brand-2:#00E0C6;
  --accent:#FFC24B;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#E6E8EF;
  --text-1:#14161C;
  --text-2:#5A6070;
  --text-inv:#F2F4F9;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,20,32,.06),0 8px 24px rgba(16,20,32,.06);
  --shadow-2:0 16px 40px rgba(16,20,32,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text-1);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(14,16,20,.42);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 32px rgba(0,0,0,.18);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-stuck{
  background:#0E1014;
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 4px 16px rgba(16,20,32,.10);
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__mark{width:28px;height:28px;display:block;flex-shrink:0;}
.brand__text{font-size:18px;font-weight:700;letter-spacing:.2px;color:#F2F4F9;white-space:nowrap;}
.brand__text span{color:var(--brand-2);}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:#E8EAF2;
  padding:6px 0;transition:color .25s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-6px;width:0;height:2px;border-radius:2px;
  background:var(--brand-2);transform:translateX(-50%);transition:width .25s var(--ease);
}
.nav-links a:hover{color:var(--brand-2);}
.nav-links a:hover::after{width:18px;}
.nav-links a.is-active{color:#fff;}
.nav-links a.is-active::after{width:22px;background:var(--brand);}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.nav-search{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  border:1px solid rgba(255,255,255,.20);border-radius:999px;color:#C9CDD9;font-size:14px;
  background:rgba(255,255,255,.04);transition:all .25s var(--ease);
}
.nav-search:hover{border-color:var(--brand-2);color:#fff;}
.nav-search svg{width:15px;height:15px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .25s var(--ease);min-height:44px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(108,76,255,.28);}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);color:#fff;}
.btn-ghost{border-color:rgba(255,255,255,.28);color:#fff;background:transparent;}
.btn-ghost:hover{background:rgba(108,76,255,.08);border-color:rgba(255,255,255,.55);color:#fff;}
.btn-light-ghost{border-color:#D8DCE8;color:var(--text-1);background:transparent;}
.btn-light-ghost:hover{background:rgba(108,76,255,.08);border-color:var(--brand);color:var(--brand);}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px;}
.nav-cta{height:40px;padding:0 20px;font-size:14px;min-height:40px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.20);
  background:rgba(255,255,255,.04);border-radius:10px;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#E8EAF2;border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);}
.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-open .nav-toggle span:nth-child(2){opacity:0;}
.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{
  display:none;position:fixed;top:60px;left:0;right:0;bottom:0;z-index:1029;
  background:#0E1014;padding:24px 20px 40px;overflow-y:auto;
}
.nav-open .mobile-panel{display:block;}
.mobile-panel a.m-link{display:block;font-size:18px;line-height:56px;color:#E8EAF2;border-bottom:1px solid var(--line-dark);}
.mobile-panel a.m-link.is-active{color:var(--brand-2);}
.mobile-panel .m-actions{margin-top:28px;display:flex;flex-direction:column;gap:12px;}
.mobile-panel .m-actions .btn{width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:88vh;display:flex;align-items:center;
  background-color:var(--bg-deep);overflow:hidden;padding:120px 0 72px;
}
.hero__bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,16,20,.72) 0%,rgba(14,16,20,.62) 45%,rgba(14,16,20,.92) 100%);
}
.hero__grid{
  position:absolute;left:0;bottom:0;width:min(460px,52%);height:240px;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:linear-gradient(to top right,#000,transparent 72%);
  mask-image:linear-gradient(to top right,#000,transparent 72%);
}
.hero__inner{position:relative;z-index:2;max-width:880px;}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.16em;
  color:var(--brand-2);text-transform:uppercase;margin-bottom:20px;font-weight:600;
}
.hero__eyebrow::before{content:"";width:26px;height:1px;background:var(--brand-2);display:block;}
.hero__title{
  font-size:clamp(30px,5.4vw,56px);line-height:1.15;font-weight:800;letter-spacing:-.5px;
  color:#fff;margin-bottom:22px;
}
.hero__title em{font-style:normal;color:var(--brand-2);}
.hero__sub{font-size:clamp(16px,2vw,19px);color:rgba(255,255,255,.80);max-width:640px;margin-bottom:36px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:48px;}
.hero__trust{display:flex;flex-wrap:wrap;gap:28px;padding-top:24px;border-top:1px solid var(--line-dark);}
.hero__trust li{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.72);}
.hero__trust li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2);flex-shrink:0;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--white{background:#fff;}
.section--dark{background:var(--bg-deep);color:var(--text-inv);}
.section--dark h2,.section--dark h3{color:#fff;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.section-head h2{
  position:relative;padding-left:20px;font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:6px;height:26px;border-radius:3px;background:var(--brand);
}
.section-head .sub{font-size:14px;color:var(--text-2);margin-top:8px;padding-left:20px;}
.section--dark .section-head .sub{color:rgba(255,255,255,.66);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:color .25s var(--ease);}
.link-arrow i{font-style:normal;transition:transform .25s var(--ease);}
.link-arrow:hover{color:var(--brand-hover);text-decoration:underline;text-underline-offset:3px;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 品牌主张带 ---------- */
.claims{background:#fff;border-bottom:1px solid var(--line-light);}
.claims__list{display:flex;flex-wrap:wrap;padding:8px 0;}
.claims__list li{
  flex:1 1 0;min-width:240px;display:flex;align-items:center;gap:14px;
  padding:22px 30px;border-left:1px solid var(--line-light);
}
.claims__list li:first-child{border-left:none;padding-left:0;}
.claims__ico{
  width:40px;height:40px;border-radius:12px;background:rgba(108,76,255,.10);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--brand);
}
.claims__ico svg{width:20px;height:20px;}
.claims__txt strong{display:block;font-size:16px;font-weight:700;line-height:1.5;}
.claims__txt span{font-size:13px;color:var(--text-2);}

/* ---------- 品牌理念 ---------- */
.story-media{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);aspect-ratio:4/3;}
.story-media img{width:100%;height:100%;object-fit:cover;}
.story-media__tag{
  position:absolute;left:20px;bottom:20px;background:rgba(14,16,20,.78);
  color:#fff;font-size:13px;font-weight:600;padding:8px 16px;border-radius:999px;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.story-body h2{position:relative;padding-left:20px;font-size:clamp(24px,3vw,32px);font-weight:700;margin-bottom:20px;}
.story-body h2::before{content:"";position:absolute;left:0;top:.24em;width:6px;height:24px;border-radius:3px;background:var(--brand);}
.story-body p{color:var(--text-2);font-size:16.5px;}
.story-points{margin:28px 0 32px;display:grid;gap:14px;}
.story-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;}
.story-points .dot{
  width:22px;height:22px;border-radius:50%;border:1.5px solid var(--brand);color:var(--brand);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:4px;
}

/* ---------- 精选卡片 ---------- */
.feature-card{
  display:flex;flex-direction:column;height:100%;background:var(--bg-card);
  border:1px solid var(--line-light);border-radius:var(--radius-card);overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-2);}
.feature-card__media{position:relative;aspect-ratio:3/2;overflow:hidden;}
.feature-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.feature-card:hover .feature-card__media img{transform:scale(1.04);}
.feature-card__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,0) 40%,rgba(0,0,0,.35) 100%);
}
.feature-card__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.feature-card__body h3{font-size:20px;line-height:1.45;font-weight:600;}
.feature-card__body p{font-size:14.5px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.feature-card--wide{flex-direction:row;}
.feature-card--wide .feature-card__media{width:48%;aspect-ratio:auto;min-height:280px;flex-shrink:0;}
.feature-card--wide .feature-card__body{justify-content:center;}
.feature-card--wide .feature-card__body h3{font-size:24px;}

/* ---------- 徽章 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(0,224,198,.12);color:#0A8F80;
}
.badge-amber{background:rgba(255,194,75,.18);color:#8A5D00;}

/* ---------- 资讯卡片 ---------- */
.news-card{
  height:100%;background:var(--bg-card);border:1px solid var(--line-light);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-2);}
.news-card__link{display:flex;flex-direction:column;height:100%;}
.news-card__cover{position:relative;aspect-ratio:3/2;overflow:hidden;background:linear-gradient(135deg,#6C4CFF,#00E0C6);}
.news-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.news-card:hover .news-card__cover img{transform:scale(1.04);}
.news-card__cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,0) 45%,rgba(0,0,0,.35) 100%);
}
.news-card__body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-card__title{font-size:18px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__excerpt{font-size:14px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line-light);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.news-card__time{font-size:13px;color:var(--text-2);}
.news-card__more{font-size:13px;font-weight:600;color:var(--brand);}
.empty-state{
  padding:56px 24px;text-align:center;border:1px dashed var(--line-light);border-radius:var(--radius-card);
  background:#fff;
}
.empty-state svg{width:24px;height:24px;color:var(--brand);margin:0 auto 14px;}
.empty-state p{font-size:14px;color:var(--text-2);margin:0;}

/* ---------- 信任数据带 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px;}
.metrics li{padding:8px 28px;border-left:1px solid var(--line-dark);}
.metrics li:first-child{border-left:none;padding-left:0;}
.metrics b{display:block;font-size:clamp(28px,3.4vw,40px);font-weight:800;color:var(--brand-2);line-height:1.2;letter-spacing:-.5px;}
.metrics span{display:block;font-size:14px;color:rgba(255,255,255,.70);margin-top:6px;}
.dark-note{margin-top:44px;padding-top:28px;border-top:1px solid var(--line-dark);display:flex;flex-wrap:wrap;gap:16px 32px;}
.dark-note span{font-size:14px;color:rgba(255,255,255,.66);display:flex;align-items:center;gap:8px;}
.dark-note span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line-light);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:16.5px;font-weight:600;color:var(--text-1);transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--brand);line-height:1;flex-shrink:0;
  transition:transform .25s var(--ease);
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-item summary:hover{color:var(--brand);}
.faq-body{padding:0 40px 24px 0;font-size:15.5px;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--bg-deep);border-radius:20px;overflow:hidden;
  padding:clamp(32px,5vw,56px);display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,255,.20) 0%,rgba(108,76,255,0) 70%);
  pointer-events:none;
}
.cta-band__txt{position:relative;z-index:2;max-width:640px;}
.cta-band__txt h2{color:#fff;font-size:clamp(22px,2.8vw,30px);font-weight:700;margin-bottom:12px;}
.cta-band__txt p{color:rgba(255,255,255,.72);font-size:15.5px;margin:0;}
.cta-band__act{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.66);padding:72px 0 0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand__text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.60);max-width:330px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:20px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.66);transition:color .25s var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:56px;padding:24px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.50);
}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-links{gap:22px;}
}
@media (max-width:991.98px){
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:flex;}
  .hero{min-height:auto;padding:112px 0 64px;}
  .section{padding:64px 0;}
  .feature-card--wide{flex-direction:column;}
  .feature-card--wide .feature-card__media{width:100%;aspect-ratio:3/2;min-height:0;}
  .metrics{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .metrics li:nth-child(3){border-left:none;padding-left:0;}
  .claims__list li{flex:1 1 45%;}
  .claims__list li:nth-child(3){border-left:none;padding-left:0;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .section{padding:48px 0;}
  .section--tight{padding:44px 0;}
  .nav-bar{height:60px;}
  .mobile-panel{top:60px;}
  .brand__text{font-size:16px;}
  .hero{padding:96px 0 56px;}
  .hero__title{letter-spacing:-.2px;}
  .hero__sub{margin-bottom:28px;}
  .hero__actions{flex-direction:column;gap:12px;}
  .hero__actions .btn{width:100%;}
  .hero__trust{gap:16px;padding-top:20px;}
  .claims__list li{flex:1 1 100%;border-left:none;padding:16px 0;border-bottom:1px solid var(--line-light);}
  .claims__list li:last-child{border-bottom:none;}
  .metrics{grid-template-columns:1fr;}
  .metrics li{border-left:none;padding:0 0 20px;}
  .section-head{margin-bottom:32px;}
  .cta-band{padding:32px 24px;flex-direction:column;align-items:flex-start;}
  .cta-band__act{width:100%;}
  .cta-band__act .btn{width:100%;}
  .news-card__body,.feature-card__body{padding:18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-body{padding-right:0;}
}
@media (max-width:575.98px){
  .hero__trust li{font-size:13px;}
  .story-media{aspect-ratio:16/10;}
}

/* roulang page: article */
:root{
  --bg-deep:#0E1014;
  --bg-deep-2:#161A22;
  --bg-page:#F5F6F9;
  --bg-card:#FFFFFF;
  --brand:#6C4CFF;
  --brand-dark:#5A3DE8;
  --brand-2:#00E0C6;
  --accent:#FFC24B;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#E6E8EF;
  --text-1:#14161C;
  --text-2:#5A6070;
  --text-inv:#F2F4F9;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(16,20,32,.06),0 8px 24px rgba(16,20,32,.06);
  --shadow-2:0 16px 40px rgba(16,20,32,.12);
  --shadow-brand:0 8px 20px rgba(108,76,255,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap-section:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .25s var(--ease),border-color .25s var(--ease);}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--text-1);line-height:1.3;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;padding-left:22px;padding-right:22px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(14,16,20,.42);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 32px rgba(0,0,0,.18);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-stuck{background:#0E1014;box-shadow:0 4px 16px rgba(16,20,32,.10);}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.brand__mark{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;}
.brand__text{font-size:18px;font-weight:800;letter-spacing:.2px;color:#FFFFFF;white-space:nowrap;}
.brand__text span{color:var(--brand-2);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;display:inline-block;padding:10px 14px;font-size:15px;font-weight:500;
  color:#E8EAF2;border-radius:8px;text-decoration:none;transition:color .25s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--brand-2);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-links a:hover{color:var(--brand-2);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:#FFFFFF;font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);background:var(--brand);}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-search{
  display:inline-flex;align-items:center;gap:7px;padding:8px 14px;font-size:14px;color:#C9CEDC;
  border:1px solid rgba(255,255,255,.16);border-radius:999px;text-decoration:none;
  transition:color .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.nav-search svg{width:17px;height:17px;}
.nav-search:hover{color:#FFFFFF;border-color:var(--brand-2);background:rgba(0,224,198,.08);}
.nav-toggle{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;background:transparent;border:1px solid rgba(255,255,255,.2);
  border-radius:10px;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:20px;height:2px;background:#E8EAF2;border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;border-radius:var(--r-btn);cursor:pointer;
  text-decoration:none;transition:all .25s var(--ease);
}
.btn-primary{background:var(--brand);color:#FFFFFF;box-shadow:var(--shadow-brand);}
.btn-primary:hover{background:var(--brand-dark);color:#FFFFFF;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#FFFFFF;}
.btn-ghost:hover{background:rgba(108,76,255,.08);border-color:var(--brand-2);color:#FFFFFF;}
.btn-outline{background:#FFFFFF;border-color:#D8DCE8;color:var(--text-1);}
.btn-outline:hover{background:rgba(108,76,255,.08);border-color:var(--brand);color:var(--brand);}
.btn-lg{min-height:52px;padding:15px 32px;font-size:16px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);}
.link-arrow span{transition:transform .25s var(--ease);}
.link-arrow:hover span{transform:translateX(4px);}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.5;white-space:nowrap;
}
.badge--cyan{background:rgba(0,224,198,.12);color:#0C8B7D;}
.badge--brand{background:rgba(108,76,255,.12);color:#5A3DE8;}
.badge--dark{background:rgba(255,255,255,.10);color:#E8EAF2;}

/* ============ 文章头部窄带 ============ */
.article-hero{
  position:relative;
  padding:158px 0 68px;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat #0E1014;
  color:#FFFFFF;
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,16,20,.86) 0%,rgba(14,16,20,.94) 100%);
}
.article-hero::after{
  content:"";position:absolute;left:0;bottom:0;width:320px;height:180px;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:32px 32px;pointer-events:none;
}
.article-hero .container{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;line-height:1.6;color:rgba(255,255,255,.66);margin-bottom:18px;}
.crumb a{color:rgba(255,255,255,.66);}
.crumb a:hover{color:#FFFFFF;}
.crumb .sep{color:rgba(255,255,255,.34);}
.crumb .current{color:var(--brand-2);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:clamp(30px,4vw,42px);
  line-height:1.25;font-weight:800;letter-spacing:-.3px;color:#FFFFFF;
  max-width:900px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:24px;font-size:14px;color:rgba(255,255,255,.72);}
.meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-item svg{width:16px;height:16px;opacity:.8;}
.meta-sep{width:1px;height:14px;background:rgba(255,255,255,.20);}

/* ============ 正文区 ============ */
.article-body{padding:76px 0 92px;background:var(--bg-page);}
.article-grid{
  display:grid;grid-template-columns:minmax(0,800px) 260px;
  gap:56px;justify-content:center;align-items:start;
}
.article-main{min-width:0;}
.article-content{font-size:17px;line-height:1.9;color:var(--text-1);word-break:break-word;}
.article-content > *:first-child{margin-top:0;}
.article-content h2{
  position:relative;font-size:30px;font-weight:700;line-height:1.35;
  margin:46px 0 18px;padding-left:20px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:6px;border-radius:3px;background:var(--brand);
}
.article-content h3{font-size:21px;font-weight:600;line-height:1.5;margin:32px 0 12px;}
.article-content h4{font-size:18px;font-weight:600;margin:24px 0 10px;}
.article-content p{margin:0 0 1.2em;}
.article-content ul,.article-content ol{margin:0 0 1.2em;padding-left:24px;list-style:revert;}
.article-content li{line-height:1.8;margin-bottom:8px;}
.article-content blockquote{
  margin:28px 0;padding:18px 24px;border-left:3px solid var(--brand);
  background:#F0F1F9;border-radius:0 var(--r-img) var(--r-img) 0;color:var(--text-2);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--r-img);margin:24px auto;}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-content th,.article-content td{padding:12px 14px;border-bottom:1px solid var(--line-light);text-align:left;}
.article-content thead th{background:#F0F1F9;font-weight:600;}
.article-content tbody tr:nth-child(even){background:#FAFAFD;}
.article-content a{color:var(--brand);border-bottom:1px solid rgba(108,76,255,.35);}
.article-content a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark);}
.article-content hr{border:none;border-top:1px solid var(--line-light);margin:36px 0;}
.article-content code{background:#F0F1F9;border-radius:6px;padding:2px 6px;font-size:15px;}

.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--line-light);}
.article-foot .back-link{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand);
}
.article-foot .back-link:hover{color:var(--brand-dark);}

.empty-state{
  background:var(--bg-card);border:1px solid var(--line-light);border-radius:var(--r-card);
  padding:64px 28px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-state svg{width:44px;height:44px;color:var(--brand);margin:0 auto 16px;}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:20px;}

/* ============ 侧栏 ============ */
.article-aside{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:var(--bg-card);border:1px solid var(--line-light);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.aside-card h4{font-size:15px;font-weight:700;margin-bottom:14px;letter-spacing:.3px;}
.aside-list li + li{border-top:1px solid var(--line-light);}
.aside-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:11px 0;font-size:14px;color:var(--text-2);
}
.aside-list a:hover{color:var(--brand);}
.aside-list a::after{content:"→";font-size:13px;opacity:.6;}
.aside-card--dark{background:var(--bg-deep-2);border-color:var(--line-dark);box-shadow:none;}
.aside-card--dark h4{color:#FFFFFF;}
.aside-card--dark p{font-size:13px;line-height:1.75;color:rgba(255,255,255,.66);margin:0;}

/* ============ 通用板块 ============ */
.section{padding:var(--gap-section) 0;}
.section--light{background:var(--bg-page);}
.section--white{background:#FFFFFF;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.section-head h2{
  position:relative;padding-left:18px;font-size:34px;font-weight:700;line-height:1.3;letter-spacing:-.3px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:6px;border-radius:3px;background:var(--brand);
}
.section-head p{margin:8px 0 0;color:var(--text-2);font-size:15px;}

/* ============ 内容卡片 ============ */
.card-x{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--bg-card);border:1px solid var(--line-light);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);text-decoration:none;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-2);}
.card-x__media{position:relative;aspect-ratio:3/2;overflow:hidden;background:var(--bg-deep-2);}
.card-x__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.card-x:hover .card-x__media img{transform:scale(1.04);}
.card-x__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 45%,rgba(0,0,0,.35) 100%);}
.card-x__body{padding:22px;display:flex;flex-direction:column;flex:1;}
.card-x__body h3{
  font-size:20px;font-weight:600;line-height:1.45;margin:12px 0 10px;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-x__body p{
  font-size:14px;line-height:1.7;color:var(--text-2);margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-x__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-2);}
.card-x__foot .more{color:var(--brand);font-weight:600;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;padding:80px 0;color:#FFFFFF;overflow:hidden;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat var(--bg-deep);
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(14,16,20,.94) 0%,rgba(22,26,34,.88) 60%,rgba(108,76,255,.30) 100%);}
.cta-band .container{position:relative;z-index:1;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-inner h2{font-size:32px;color:#FFFFFF;line-height:1.3;margin-bottom:10px;}
.cta-inner p{margin:0;color:rgba(255,255,255,.72);font-size:16px;max-width:640px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.66);padding:72px 0 0;font-size:14px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__text{font-size:17px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.60);margin:0;max-width:360px;}
.footer-col h4{font-size:15px;font-weight:700;color:#FFFFFF;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.60);}
.footer-col ul li a{color:rgba(255,255,255,.66);}
.footer-col ul li a:hover{color:#FFFFFF;}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.50);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-aside{position:static;margin-top:44px;display:grid;grid-template-columns:1fr 1fr;gap:20px;}
}
@media (max-width:991.98px){
  :root{--gap-section:64px;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .nav-links{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:14px 22px 40px;background:rgba(14,16,20,.98);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    transform:translateY(-8px);opacity:0;visibility:hidden;
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-links a{font-size:18px;line-height:56px;padding:0 4px;border-radius:0;border-bottom:1px solid rgba(255,255,255,.08);}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand-2);}
  .brand__text{font-size:16px;}
  .article-hero{padding:134px 0 54px;}
  .section-head h2{font-size:28px;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:32px;}
  .cta-inner h2{font-size:26px;}
}
@media (max-width:767.98px){
  .nav-bar{height:60px;}
  .nav-links{top:60px;}
  .nav-cta{padding:9px 16px;font-size:14px;min-height:40px;}
  .article-hero{padding:112px 0 46px;}
  .article-title{font-size:clamp(24px,6vw,30px);-webkit-line-clamp:4;}
  .crumb .current{max-width:220px;}
  .article-content{font-size:16px;line-height:1.9;}
  .article-content h2{font-size:24px;margin-top:36px;}
  .article-content h3{font-size:19px;}
  .article-body{padding:48px 0 64px;}
  .article-aside{grid-template-columns:1fr;}
  .section{padding:var(--gap-section) 0;}
  .cta-band{padding:56px 0;}
  .cta-inner .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575.98px){
  .container{padding-left:18px;padding-right:18px;}
  .brand__text{font-size:15px;}
  .card-x__body{padding:18px;}
  .empty-state{padding:48px 20px;}
}

/* roulang page: category1 */
:root{
  --bg-deep:#0E1014;
  --bg-deep-2:#161A22;
  --bg-page:#F5F6F9;
  --bg-card:#FFFFFF;
  --brand:#6C4CFF;
  --brand-hover:#5A3DE8;
  --brand-2:#00E0C6;
  --accent:#FFC24B;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#E6E8EF;
  --text-1:#14161C;
  --text-2:#5A6070;
  --text-inv:#F2F4F9;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,32,.06),0 8px 24px rgba(16,20,32,.06);
  --shadow-2:0 16px 40px rgba(16,20,32,.12);
  --shadow-btn:0 8px 20px rgba(108,76,255,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-space:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease);}
img{display:block;max-width:100%;height:auto;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(108,76,255,.18);}

.container{
  width:100%;
  margin-right:auto;
  margin-left:auto;
  padding-left:22px;
  padding-right:22px;
}
@media (min-width:1200px){.container{max-width:1200px;}}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  background:rgba(14,16,20,.42);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 32px rgba(0,0,0,.18);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-stuck{
  background:#0E1014;
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 4px 16px rgba(16,20,32,.10);
}
.nav-bar{
  display:flex;
  align-items:center;
  gap:34px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand__mark{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;}
.brand__text{
  font-size:17px;
  font-weight:800;
  letter-spacing:.2px;
  color:var(--text-inv);
  white-space:nowrap;
}
.brand__text span{color:var(--brand-2);}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-links a{
  position:relative;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:#E8EAF2;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:0;height:2px;
  background:var(--brand-2);
  transition:width .25s var(--ease),background .25s var(--ease);
}
.nav-links a:hover{color:var(--brand-2);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:#fff;font-weight:600;}
.nav-links a.is-active::after{width:22px;background:var(--brand);}
.nav-right{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:auto;
}
.nav-search{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 15px;
  font-size:14px;
  color:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-pill);
  transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease);
}
.nav-search svg{width:16px;height:16px;flex:0 0 auto;}
.nav-search:hover{color:#fff;border-color:var(--brand-2);background:rgba(0,224,198,.08);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  padding:0;
  border:1px solid rgba(255,255,255,.18);
  border-radius:10px;
  background:transparent;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:#E8EAF2;
  border-radius:2px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:var(--shadow-btn);
}
.btn-primary:hover{
  background:var(--brand-hover);
  color:#fff;
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.28);
}
.btn-ghost:hover{
  background:rgba(108,76,255,.14);
  border-color:rgba(0,224,198,.6);
  color:#fff;
}
.btn-light-ghost{
  background:transparent;
  color:var(--text-1);
  border-color:#D8DCE8;
}
.btn-light-ghost:hover{
  background:rgba(108,76,255,.08);
  border-color:var(--brand);
  color:var(--brand);
}
.btn-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  padding:0;
  background:none;
  border:0;
}
.btn-arrow svg{width:16px;height:16px;transition:transform .25s var(--ease);}
.btn-arrow:hover{color:var(--brand-hover);}
.btn-arrow:hover svg{transform:translateX(4px);}

/* ============ 顶部横幅 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:150px 0 68px;
  min-height:360px;
  color:#fff;
  background-image:
    linear-gradient(180deg,rgba(14,16,20,.9) 0%,rgba(14,16,20,.76) 60%,rgba(14,16,20,.86) 100%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:280px;height:180px;
  background-image:
    linear-gradient(rgba(255,255,255,.10) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:28px 28px;
  opacity:.5;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.6);
}
.crumbs a:hover{color:var(--brand-2);}
.crumbs .sep{color:rgba(255,255,255,.32);}
.crumbs .current{color:var(--brand-2);font-weight:600;}
.page-hero h1{
  margin:18px 0 16px;
  max-width:840px;
  font-size:40px;
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.3px;
}
.page-hero .hero-sub{
  max-width:660px;
  font-size:16px;
  line-height:1.8;
  color:rgba(255,255,255,.76);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ============ 数据带 ============ */
.stat-band{
  background:var(--bg-deep-2);
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
  padding:34px 0;
}
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
}
.stat-item{
  padding:0 26px;
  border-left:1px solid rgba(255,255,255,.08);
}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-size:28px;
  font-weight:800;
  line-height:1.2;
  color:var(--brand-2);
  letter-spacing:-.5px;
}
.stat-label{
  margin-top:6px;
  font-size:13px;
  color:rgba(255,255,255,.7);
}

/* ============ 板块通用 ============ */
.section{padding:var(--sec-space) 0;}
.section--tight{padding-top:calc(var(--sec-space) * .6);}
.section--plain{background:var(--bg-card);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  position:relative;
  padding-left:20px;
  font-size:33px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.3px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:6px;height:28px;
  border-radius:3px;
  background:var(--brand);
}
.section-head p{
  margin-top:14px;
  font-size:16px;
  color:var(--text-2);
}
.section-head--between{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  max-width:none;
}

/* ============ 概述卡 ============ */
.overview{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  overflow:hidden;
  background:var(--bg-card);
  border:1px solid var(--line-light);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
}
.overview__media{position:relative;min-height:340px;}
.overview__media img{
  width:100%;height:100%;
  object-fit:cover;
  aspect-ratio:4/3;
}
.overview__media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,0) 45%,rgba(0,0,0,.35) 100%);
}
.overview__body{padding:42px 40px;}
.overview__body h3{
  font-size:24px;
  font-weight:700;
  line-height:1.45;
  margin-bottom:16px;
}
.overview__body p{
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}
.overview__body p + p{margin-top:14px;}

.point-list{margin-top:26px;display:grid;gap:16px;}
.point-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
}
.point-list .idx{
  flex:0 0 auto;
  width:28px;height:28px;
  margin-top:4px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:700;
  color:var(--brand);
  border:1px solid rgba(108,76,255,.4);
  border-radius:50%;
  background:rgba(108,76,255,.06);
}
.point-list strong{display:block;font-size:16px;font-weight:600;}
.point-list span.desc{display:block;font-size:14px;color:var(--text-2);line-height:1.7;}

/* ============ 三步流程 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
  position:relative;
}
.step{
  position:relative;
  padding:30px 26px 28px;
  background:var(--bg-card);
  border:1px solid var(--line-light);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.step:hover{
  transform:translateY(-4px);
  border-color:var(--brand-2);
  box-shadow:var(--shadow-2);
}
.step__no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:50%;
  background:rgba(108,76,255,.10);
  color:var(--brand);
  font-size:16px;
  font-weight:800;
  margin-bottom:18px;
}
.step h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:10px;}
.step p{font-size:15px;color:var(--text-2);line-height:1.8;}
.step__tag{
  display:inline-block;
  margin-top:16px;
  padding:4px 12px;
  font-size:12px;
  border-radius:var(--r-pill);
  background:rgba(0,224,198,.12);
  color:#0B8E7F;
}

/* ============ 频道卡 ============ */
.channel-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.channel-card{
  display:flex;
  flex-direction:column;
  overflow:hidden;
  background:var(--bg-card);
  border:1px solid var(--line-light);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.channel-card:hover{
  transform:translateY(-4px);
  border-color:var(--brand-2);
  box-shadow:var(--shadow-2);
}
.channel-card__media{position:relative;aspect-ratio:3/2;overflow:hidden;}
.channel-card__media img{width:100%;height:100%;object-fit:cover;}
.channel-card__media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,0) 45%,rgba(0,0,0,.35) 100%);
}
.channel-card__badge{
  position:absolute;
  left:16px;top:16px;
  z-index:2;
  padding:4px 12px;
  font-size:12px;
  font-weight:600;
  color:#0B8E7F;
  background:rgba(0,224,198,.9);
  border-radius:var(--r-pill);
}
.channel-card__body{padding:22px 24px 26px;}
.channel-card__body h3{font-size:21px;font-weight:600;line-height:1.45;margin-bottom:10px;}
.channel-card__body p{font-size:15px;color:var(--text-2);line-height:1.8;}
.channel-card__foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:20px;
  padding-top:16px;
  border-top:1px solid var(--line-light);
  font-size:13px;
  color:var(--text-2);
}

/* ============ FAQ ============ */
.faq-wrap{
  background:var(--bg-card);
  border:1px solid var(--line-light);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:10px 30px;
}
.faq-wrap .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line-light);
}
.faq-wrap .accordion-item:last-child{border-bottom:0;}
.faq-wrap .accordion-button{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text-1);
  background:transparent;
  box-shadow:none;
  border-radius:0;
}
.faq-wrap .accordion-button:not(.collapsed){color:var(--brand);}
.faq-wrap .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-wrap .accordion-button::after{
  content:"+";
  width:auto;height:auto;
  margin:0;
  background-image:none;
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--text-2);
  transition:color .25s var(--ease),transform .25s var(--ease);
}
.faq-wrap .accordion-button:not(.collapsed)::after{
  content:"−";
  color:var(--brand);
  transform:none;
}
.faq-wrap .accordion-body{
  padding:0 0 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--bg-deep);
  color:#fff;
  padding:64px 0;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-80px;top:-120px;
  width:460px;height:460px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,255,.30) 0%,rgba(14,16,20,0) 68%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:30px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.3px;
}
.cta-inner p{
  margin-top:12px;
  max-width:640px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  line-height:1.8;
}
.cta-band .btn-primary{background:var(--accent);color:#2A1D00;box-shadow:0 8px 20px rgba(255,194,75,.22);}
.cta-band .btn-primary:hover{background:#FFB524;color:#2A1D00;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-deep);
  color:rgba(255,255,255,.66);
  padding:72px 0 0;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.footer-brand .brand__text{font-size:17px;}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.6);
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:12px;}
.footer-col li,
.footer-col a{font-size:14px;line-height:1.7;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:56px;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom span{line-height:1.7;}

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  .page-hero h1{font-size:38px;}
}
@media (max-width:1199.98px){
  :root{--sec-space:88px;}
  .overview__body{padding:34px 30px;}
}
@media (max-width:991.98px){
  :root{--sec-space:64px;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .nav-links{
    position:fixed;
    top:72px;left:0;right:0;
    height:calc(100vh - 72px);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:24px 24px 40px;
    background:#0E1014;
    border-top:1px solid rgba(255,255,255,.08);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease);
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-links a{font-size:18px;line-height:56px;width:100%;border-bottom:1px solid rgba(255,255,255,.06);}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand-2);}
  .page-hero{padding:126px 0 56px;}
  .page-hero h1{font-size:34px;}
  .overview{grid-template-columns:1fr;}
  .overview__media{min-height:250px;}
  .overview__media img{aspect-ratio:16/9;}
  .steps{grid-template-columns:1fr;gap:18px;}
  .channel-grid{grid-template-columns:repeat(2,1fr);}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:24px 0;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .cta-inner h2{font-size:26px;}
}
@media (max-width:767.98px){
  .page-hero h1{font-size:30px;}
  .section-head h2{font-size:26px;}
  .channel-grid{grid-template-columns:1fr;}
  .faq-wrap{padding:6px 20px;}
  .cta-inner h2{font-size:24px;}
  .footer-desc{max-width:none;}
}
@media (max-width:575.98px){
  :root{--sec-space:48px;}
  .nav-bar{height:60px;}
  .nav-links{top:60px;height:calc(100vh - 60px);}
  .brand__text{font-size:15px;}
  .page-hero{padding:104px 0 46px;min-height:300px;}
  .page-hero h1{font-size:28px;}
  .hero-actions .btn{width:100%;}
  .overview__body{padding:24px 18px;}
  .channel-card__body{padding:18px 18px 22px;}
  .step{padding:24px 20px;}
  .stat-item{padding:0 18px;}
  .stat-num{font-size:24px;}
  .cta-band{padding:48px 0;}
  .cta-band .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category2 */
:root{
  --bg-deep:#0E1014;
  --bg-deep-2:#161A22;
  --bg-page:#F5F6F9;
  --bg-card:#FFFFFF;
  --brand:#6C4CFF;
  --brand-hover:#5A3DE8;
  --brand-soft:#9C86FF;
  --brand-2:#00E0C6;
  --brand-2-ink:#0C8F82;
  --accent:#FFC24B;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#E6E8EF;
  --text-1:#14161C;
  --text-2:#5A6070;
  --text-inv:#F2F4F9;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,20,32,.06),0 8px 24px rgba(16,20,32,.06);
  --shadow-2:0 16px 40px rgba(16,20,32,.12);
  --shadow-brand:0 8px 20px rgba(108,76,255,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --section-y:96px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1320px}}
section[id]{scroll-margin-top:92px}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(14,16,20,.42);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 32px rgba(0,0,0,.18);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-stuck{background:#0E1014;box-shadow:0 4px 16px rgba(16,20,32,.10)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{display:inline-flex;width:28px;height:28px;flex:0 0 28px}
.brand__mark svg{width:100%;height:100%}
.brand__text{font-size:19px;font-weight:800;letter-spacing:-.3px;color:var(--text-inv);white-space:nowrap}
.brand__text span{color:var(--brand-soft)}

.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;font-weight:500;color:#E8EAF2;border-radius:8px;
  transition:color .25s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--brand-2);transform:scaleX(0);transform-origin:left;
  transition:transform .25s var(--ease);
}
.nav-links a:hover{color:var(--brand-2)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#FFFFFF}
.nav-links a.is-active::after{background:var(--brand);transform:scaleX(1)}

.nav-right{display:flex;align-items:center;gap:14px}
.nav-search{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid rgba(255,255,255,.18);border-radius:999px;
  font-size:14px;color:#E8EAF2;transition:all .25s var(--ease);
}
.nav-search svg{width:16px;height:16px;flex:0 0 16px}
.nav-search:hover{border-color:var(--brand-2);color:var(--brand-2);background:rgba(0,224,198,.08)}
.nav-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;border-radius:10px;
  padding:11px 10px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:#F2F4F9;margin:5px 0;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;min-height:44px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all .25s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#FFFFFF;box-shadow:var(--shadow-brand)}
.btn-primary:hover{background:var(--brand-hover);color:#FFFFFF;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text-1);border-color:#D8DCE8}
.btn-ghost:hover{background:rgba(108,76,255,.08);border-color:var(--brand);color:var(--brand)}
.btn-ghost--dark{background:transparent;color:var(--text-inv);border-color:rgba(255,255,255,.28)}
.btn-ghost--dark:hover{background:rgba(108,76,255,.18);border-color:var(--brand-2);color:#FFFFFF}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);transition:color .25s var(--ease)}
.btn-text .arrow{transition:transform .25s var(--ease)}
.btn-text:hover{color:var(--brand-hover);text-decoration:underline;text-underline-offset:3px}
.btn-text:hover .arrow{transform:translateX(4px)}

/* ============ 通用徽章 / 标签 ============ */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:rgba(0,224,198,.12);color:var(--brand-2-ink);
  letter-spacing:.2px;
}
.badge-pill--brand{background:rgba(108,76,255,.12);color:var(--brand)}
.badge-pill--dark{background:rgba(0,224,198,.14);color:var(--brand-2)}

/* ============ 板块基础 ============ */
.section{padding:var(--section-y) 0}
.section--white{background:#FFFFFF}
.section--dark{background:var(--bg-deep);color:var(--text-inv)}
.section-head{margin-bottom:44px}
.section-title{
  display:flex;align-items:center;gap:14px;
  font-size:34px;line-height:1.3;font-weight:700;letter-spacing:-.3px;margin:0 0 14px;
}
.section-title::before{content:"";flex:0 0 6px;width:6px;height:28px;border-radius:3px;background:var(--brand)}
.section--dark .section-title{color:var(--text-inv)}
.section-sub{font-size:16px;line-height:1.85;color:var(--text-2);max-width:760px;margin:0}
.section--dark .section-sub{color:rgba(255,255,255,.72)}
.lead-text{font-size:17px;line-height:1.9;color:var(--text-2)}
.lead-text strong{color:var(--text-1)}

/* ============ 内页横幅 ============ */
.page-banner{
  position:relative;overflow:hidden;color:var(--text-inv);
  min-height:370px;padding:152px 0 64px;
  background:var(--bg-deep) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,16,20,.88) 0%,rgba(14,16,20,.72) 52%,rgba(14,16,20,.94) 100%);
}
.page-banner::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:190px;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000);
  mask-image:linear-gradient(180deg,transparent,#000);
}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:0;margin:0 0 18px;background:none;font-size:14px;color:rgba(255,255,255,.62);
}
.breadcrumb a{color:rgba(255,255,255,.62);transition:color .25s var(--ease)}
.breadcrumb a:hover{color:#FFFFFF}
.breadcrumb .sep{color:rgba(255,255,255,.34)}
.breadcrumb .current{color:var(--brand-2);font-weight:600}
.banner-title{
  font-size:42px;line-height:1.25;font-weight:800;letter-spacing:-.5px;
  color:#FFFFFF;margin:0 0 14px;max-width:940px;
}
.banner-sub{font-size:17px;line-height:1.7;color:rgba(255,255,255,.78);margin:0 0 30px;max-width:680px}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 概述图文 ============ */
.overview-media{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line-light);
  box-shadow:var(--shadow-1);background:var(--bg-deep-2);
}
.overview-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.overview-caption{font-size:13.5px;line-height:1.7;color:var(--text-2);margin:14px 0 0}

.check-list{list-style:none;margin:28px 0 0;padding:0;display:grid;gap:18px}
.check-list li{display:flex;gap:14px;align-items:flex-start}
.check-list .num{
  flex:0 0 32px;width:32px;height:32px;border-radius:50%;
  border:1.5px solid var(--brand);background:rgba(108,76,255,.06);color:var(--brand);
  font-size:13.5px;font-weight:700;display:flex;align-items:center;justify-content:center;
  line-height:1;margin-top:3px;
}
.check-list .txt{font-size:16px;line-height:1.8;color:var(--text-2)}
.check-list .txt b{display:block;font-size:16.5px;font-weight:600;color:var(--text-1);margin-bottom:2px}

/* ============ 两栏对比 ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{
  background:var(--bg-card);border:1px solid var(--line-light);border-radius:var(--radius-card);
  padding:34px;box-shadow:var(--shadow-1);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-2)}
.compare-card--dark{background:var(--bg-deep-2);border-color:var(--line-dark);color:var(--text-inv)}
.compare-card--dark:hover{border-color:var(--brand-2)}
.compare-title{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:21px;line-height:1.45;font-weight:600;color:var(--text-1);margin:14px 0 8px;
}
.compare-card--dark .compare-title{color:#FFFFFF}
.compare-note{font-size:15px;line-height:1.8;color:var(--text-2);margin:0 0 22px}
.compare-card--dark .compare-note{color:rgba(255,255,255,.72)}

.step-list{list-style:none;counter-reset:st;margin:0;padding:0;display:grid;gap:16px}
.step-list li{position:relative;padding-left:44px;font-size:16px;line-height:1.8;color:var(--text-2)}
.step-list li::before{
  counter-increment:st;content:counter(st);
  position:absolute;left:0;top:2px;width:28px;height:28px;border-radius:8px;
  background:rgba(108,76,255,.12);color:var(--brand);
  font-size:13.5px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.compare-card--dark .step-list li{color:rgba(255,255,255,.76)}
.compare-card--dark .step-list li::before{background:rgba(0,224,198,.14);color:var(--brand-2)}

/* ============ 参数式说明 ============ */
.spec-list{margin:26px 0 0;border-top:1px solid var(--line-light)}
.spec-row{
  display:grid;grid-template-columns:150px 1fr;gap:18px;
  padding:18px 0;border-bottom:1px solid var(--line-light);
}
.spec-row dt{font-size:14px;font-weight:600;color:var(--text-2);letter-spacing:.4px;line-height:1.7}
.spec-row dd{margin:0;font-size:16px;line-height:1.8;color:var(--text-1)}
.spec-row dd em{font-style:normal;color:var(--brand);font-weight:600}

.media-card{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line-light);
  box-shadow:var(--shadow-1);background:#FFFFFF;
}
.media-card img{width:100%;aspect-ratio:3/2;object-fit:cover}
.media-card .media-body{padding:22px 24px}
.media-card .media-body p{font-size:14.5px;line-height:1.8;color:var(--text-2);margin:0}

/* ============ 数据带 ============ */
.stats-band{background:var(--bg-deep);color:var(--text-inv);padding:64px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:0 30px;border-left:1px solid rgba(255,255,255,.08)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font-size:34px;line-height:1.2;font-weight:800;letter-spacing:-.5px;color:var(--brand-2);margin-bottom:6px}
.stat span{font-size:14px;line-height:1.7;color:rgba(255,255,255,.70)}
.stats-note{
  margin-top:38px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.70);max-width:900px;
}

/* ============ FAQ ============ */
.faq{margin-top:34px;border-top:1px solid var(--line-light)}
.faq-item{border-bottom:1px solid var(--line-light)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 2px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--text-1);
  transition:color .25s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q[aria-expanded="true"]{color:var(--brand)}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{padding:0 2px 24px;font-size:16px;line-height:1.85;color:var(--text-2);max-width:840px}

/* ============ CTA 带 ============ */
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:56px 52px;border-radius:20px;border:1px solid var(--line-dark);
  background:
    radial-gradient(120% 150% at 88% 8%,rgba(108,76,255,.26),rgba(108,76,255,0) 58%),
    var(--bg-deep-2);
  color:var(--text-inv);
}
.cta-copy h2{font-size:30px;line-height:1.35;font-weight:700;color:#FFFFFF;letter-spacing:-.3px;margin:0 0 12px}
.cta-copy p{font-size:16px;line-height:1.85;color:rgba(255,255,255,.76);margin:0;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.66);padding:72px 0 0;margin-top:0}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand__text{color:#FFFFFF;font-size:19px;font-weight:800}
.footer-brand .brand__text span{color:var(--brand-soft)}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:350px}
.footer-col h4{font-size:15px;font-weight:600;color:#FFFFFF;margin:0 0 16px;letter-spacing:.2px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col li{font-size:14.5px;line-height:1.7;color:rgba(255,255,255,.66)}
.footer-col a{color:rgba(255,255,255,.66);transition:color .25s var(--ease)}
.footer-col a:hover{color:#FFFFFF;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);
  font-size:13.5px;color:rgba(255,255,255,.52);
}
@media (min-width:992px){
  .site-footer .row > [class*="col-"]:not(:first-child){border-left:1px solid rgba(255,255,255,.08)}
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--section-y:80px}
  .banner-title{font-size:38px}
}
@media (max-width:991.98px){
  :root{--section-y:64px}
  .nav-bar{height:60px}
  .nav-search{display:none}
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:14px 24px 48px;background:#0E1014;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease);
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-links a{
    height:56px;padding:0;font-size:18px;font-weight:500;border-radius:0;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--brand-2)}
  body.nav-open{overflow:hidden}
  .page-banner{min-height:320px;padding:118px 0 52px}
  .banner-title{font-size:34px}
  .compare-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);row-gap:32px}
  .stat{padding:0 24px}
  .stat:nth-child(odd){border-left:0;padding-left:0}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 36px}
  .cta-copy h2{font-size:26px}
  .overview-media{margin-bottom:8px}
}
@media (max-width:767.98px){
  .section-title{font-size:28px}
  .section-title::before{height:24px}
  .banner-sub{font-size:16px}
  .spec-row{grid-template-columns:1fr;gap:6px}
  .spec-row dt{font-size:13.5px}
  .compare-card{padding:26px}
  .overview-media img{aspect-ratio:16/10}
}
@media (max-width:575.98px){
  :root{--section-y:48px}
  .container{padding:0 20px}
  .brand__text{font-size:17px}
  .page-banner{padding:100px 0 44px;min-height:0}
  .banner-title{font-size:30px;line-height:1.3}
  .banner-actions .btn{width:100%}
  .section-title{font-size:24px}
  .section-title::before{width:5px;height:20px}
  .stats-grid{grid-template-columns:1fr;row-gap:28px}
  .stat{padding:0;border-left:0}
  .stat b{font-size:30px}
  .cta-inner{padding:32px 22px;border-radius:16px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .compare-card{padding:22px}
  .faq-q{font-size:16px;padding:20px 2px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}