/* roulang page: index */
:root{
  --space:#0F0C1A;
  --panel:#17142A;
  --paper:#F6F5FA;
  --brand:#6C4BFF;
  --brand-hover:#5738E6;
  --brand-active:#4A2FCB;
  --brand-soft:#A493FF;
  --lime:#C9F24D;
  --teal:#3ED6C0;
  --ink:#1E1B2E;
  --ink-2:#6E6885;
  --ink-inv:#ECE9F6;
  --ink-inv-2:#A9A3C0;
  --line:#E4E1EE;
  --line-inv:rgba(255,255,255,.14);
  --ok:#2FBF7A;
  --warn:#F2A03D;
  --err:#E5484D;
  --r-lg:18px;
  --r-md:14px;
  --r-img:16px;
  --r-input:12px;
  --r-btn:12px;
  --sh-1:0 1px 2px rgba(20,16,40,.06), 0 8px 24px rgba(20,16,40,.08);
  --sh-2:0 12px 32px rgba(20,16,40,.14);
  --sec:104px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease, background-color .2s ease, border-color .2s ease;}
a:hover{color:var(--brand-hover);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.2px;}
h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.5px;}
h2{font-size:32px;line-height:1.3;font-weight:700;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.container{width:100%;padding-left:24px;padding-right:24px;margin-right:auto;margin-left:auto;}
@media (min-width:1400px){.container{max-width:1320px;}}
@media (min-width:1200px) and (max-width:1399.98px){.container{max-width:1140px;}}
@media (min-width:992px) and (max-width:1199.98px){.container{max-width:960px;}}
@media (min-width:768px) and (max-width:991.98px){.container{max-width:720px;}}
@media (min-width:576px) and (max-width:767.98px){.container{max-width:540px;}}
.section{padding:var(--sec) 0;}
.section-light{background:var(--paper);}
.section-white{background:#fff;}
.section-dark{background:var(--space);color:var(--ink-inv);}
.section-dark h2,.section-dark h3,.section-dark h4{color:var(--ink-inv);}
.sec-head{max-width:760px;margin-bottom:52px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:rgba(108,75,255,.08);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.section-dark .eyebrow{color:var(--brand-soft);background:rgba(108,75,255,.18);}
.sec-head p{color:var(--ink-2);margin-top:14px;font-size:16px;}
.section-dark .sec-head p{color:var(--ink-inv-2);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-btn);
  padding:14px 24px;border:1px solid transparent;cursor:pointer;
  min-height:44px;transition:transform .2s ease, box-shadow .2s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#F6F5FA;box-shadow:0 8px 20px rgba(108,75,255,.28);}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px rgba(108,75,255,.34);}
.btn-primary:active{background:var(--brand-active);transform:translateY(0);box-shadow:0 6px 14px rgba(108,75,255,.24);}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:rgba(108,75,255,.08);color:var(--brand-hover);border-color:var(--brand-hover);}
.btn-ghost{background:transparent;color:var(--ink-inv);border-color:rgba(255,255,255,.18);}
.btn-ghost:hover{color:#fff;border-color:rgba(255,255,255,.42);background:rgba(255,255,255,.06);}
.btn-sm{padding:11px 18px;font-size:14px;}

/* 导航 */
.site-header{position:sticky;top:0;z-index:1030;padding:16px 0;margin-bottom:-112px;transition:padding .25s ease, background-color .25s ease, border-color .25s ease;}
.site-header.scrolled{padding:8px 0;background:rgba(15,12,26,.95);border-bottom:1px solid var(--line-inv);}
.nav-panel{
  display:flex;align-items:center;gap:20px;
  background:var(--panel);border:1px solid var(--line-inv);border-radius:20px;
  padding:10px 14px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06), 0 18px 40px rgba(8,5,20,.35);
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg,#6C4BFF,#4A2FCB);color:#F6F5FA;font-size:17px;
}
.brand-text{color:var(--ink-inv);font-size:17px;font-weight:700;letter-spacing:-.2px;white-space:nowrap;}
.brand-accent{color:var(--lime);margin-left:4px;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1;}
.nav-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:12px;font-size:14px;font-weight:500;
  color:var(--ink-inv-2);border:1px solid transparent;
}
.nav-item i{font-size:15px;color:var(--ink-inv-2);transition:color .2s ease;}
.nav-item:hover{background:rgba(108,75,255,.16);color:var(--ink-inv);}
.nav-item:hover i{color:var(--brand-soft);}
.nav-item.active{background:rgba(108,75,255,.22);color:#fff;border-color:rgba(164,147,255,.35);}
.nav-item.active i{color:var(--lime);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-inv);
  background:transparent;color:var(--ink-inv);font-size:17px;
}
.nav-toggle:hover{background:rgba(108,75,255,.18);}
.mobile-nav{background:var(--panel);color:var(--ink-inv);border-left:1px solid var(--line-inv);}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line-inv);}
.mobile-nav .btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.7;}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.mobile-card{
  display:flex;flex-direction:column;gap:8px;
  background:rgba(255,255,255,.04);border:1px solid var(--line-inv);border-radius:14px;
  padding:16px;color:var(--ink-inv);font-size:15px;font-weight:600;
}
.mobile-card i{color:var(--brand-soft);font-size:17px;}
.mobile-card:hover{background:rgba(108,75,255,.2);color:#fff;}
.mobile-card.active{background:rgba(108,75,255,.24);border-color:rgba(164,147,255,.4);color:#fff;}
.mobile-note{margin-top:20px;font-size:13px;color:var(--ink-inv-2);line-height:1.7;}

/* Hero */
.hero{position:relative;background:var(--space);overflow:hidden;padding:196px 0 96px;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34;}
.hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 82% 18%, rgba(108,75,255,.28) 0, rgba(15,12,26,0) 46%),
    linear-gradient(100deg, rgba(15,12,26,.94) 0%, rgba(15,12,26,.82) 46%, rgba(15,12,26,.58) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{color:#fff;font-size:44px;margin-bottom:18px;}
.hero-sub{color:var(--ink-inv-2);font-size:18px;line-height:1.7;max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;}
.hero-stats li{padding-right:34px;margin-right:34px;border-right:1px solid var(--line-inv);}
.hero-stats li:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-stats strong{display:block;font-size:30px;font-weight:700;color:var(--lime);line-height:1.2;}
.hero-stats span{font-size:14px;color:var(--ink-inv-2);}
.hero-visual{position:relative;padding-bottom:24px;}
.hero-img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;border:1px solid var(--line-inv);}
.hero-float{
  position:absolute;left:-26px;bottom:0;
  background:rgba(23,20,42,.96);border:1px solid var(--line-inv);border-radius:16px;
  padding:14px 18px;color:var(--ink-inv);font-size:13px;line-height:1.6;
  display:flex;align-items:center;gap:10px;box-shadow:0 18px 36px rgba(8,5,20,.4);
}
.hero-float b{color:var(--lime);font-weight:600;}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(201,242,77,.16);}

/* 价值主张 */
.value-list{border-top:1px solid var(--line);}
.value-item{display:grid;grid-template-columns:96px 1fr;gap:24px;align-items:start;padding:32px 0;border-bottom:1px solid var(--line);}
.value-num{font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;}
.value-item h3{margin-bottom:6px;}
.value-item p{color:var(--ink-2);font-size:16px;margin:0;}

/* 功能分组 */
.feature-grid{display:grid;grid-template-columns:4fr 8fr;gap:32px;}
.feature-tabs{display:flex;flex-direction:column;gap:6px;}
.feature-tab{
  text-align:left;background:transparent;border:0;border-left:3px solid transparent;
  padding:16px 18px;border-radius:0 12px 12px 0;
  font-size:16px;font-weight:600;color:var(--ink-2);transition:all .2s ease;
}
.feature-tab:hover{background:rgba(108,75,255,.05);color:var(--ink);}
.feature-tab.active{background:rgba(108,75,255,.07);border-left-color:var(--lime);color:var(--brand);}
.feature-tab small{display:block;font-size:13px;font-weight:400;color:var(--ink-2);margin-top:4px;}
.feature-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:28px;
}
.feature-panel h3{margin-bottom:18px;}
.feature-points li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:16px;color:var(--ink-2);}
.feature-points li:last-child{border-bottom:0;}
.feature-points i{color:var(--teal);font-size:15px;margin-top:6px;}
.feature-media{margin-top:22px;border-radius:var(--r-img);overflow:hidden;}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);}

/* 场景滑轨 */
.scene-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.scene-nav{display:flex;gap:10px;}
.scene-btn{
  width:46px;height:46px;border-radius:12px;border:1px solid var(--line-inv);
  background:transparent;color:var(--ink-inv);font-size:15px;transition:all .2s ease;
}
.scene-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff;}
.scene-track{
  display:flex;gap:20px;overflow-x:auto;padding-bottom:14px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.scene-track::-webkit-scrollbar{height:6px;}
.scene-track::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:99px;}
.scene-card{
  flex:0 0 calc((100% - 40px) / 3);
  scroll-snap-align:start;
  background:rgba(255,255,255,.04);border:1px solid var(--line-inv);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease, border-color .25s ease;
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(164,147,255,.45);}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.scene-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.scene-body h3{font-size:19px;}
.scene-body p{font-size:15px;color:var(--ink-inv-2);margin:0;}
.tag{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:5px 11px;border-radius:999px;
  background:rgba(201,242,77,.14);color:var(--lime);
}

/* 案例 */
.case-row{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;padding:34px 0;border-bottom:1px solid var(--line);}
.case-row.reverse{grid-template-columns:7fr 5fr;}
.case-row:last-child{border-bottom:0;}
.case-row.reverse .case-media{order:2;}
.case-row.reverse .case-text{order:1;}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1);}
.case-text h3{margin-bottom:10px;}
.case-text p{color:var(--ink-2);font-size:16px;}
.case-metrics{display:flex;gap:38px;margin-top:16px;}
.case-metrics strong{display:block;font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;}
.case-metrics span{font-size:13px;color:var(--ink-2);}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .25s ease, box-shadow .25s ease;color:inherit;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.news-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:19px;color:var(--ink);}
.news-card:hover .news-body h3{color:var(--brand);}
.news-body p{font-size:15px;color:var(--ink-2);margin:0;}
.badge-cat{
  align-self:flex-start;font-size:12px;font-weight:600;
  padding:5px 11px;border-radius:999px;
  background:rgba(108,75,255,.09);color:var(--brand);
}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:13px;color:var(--ink-2);}
.news-meta .arrow{color:var(--brand);font-weight:700;}
.news-card.featured{grid-column:span 2;flex-direction:row;}
.news-card.featured img{width:46%;aspect-ratio:auto;height:100%;}
.news-card.featured .news-body{padding:30px;justify-content:center;}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);
  border-radius:var(--r-lg);background:#fff;color:var(--ink-2);
}
.empty-state p{margin-bottom:16px;}

/* 价格 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:18px;position:relative;
}
.price-card.recommend{border:2px solid var(--brand);transform:translateY(-8px);box-shadow:var(--sh-2);}
.price-badge{
  position:absolute;top:-14px;left:30px;
  background:var(--lime);color:#1B1A12;font-size:12px;font-weight:700;
  padding:5px 12px;border-radius:999px;
}
.price-card h3{font-size:20px;}
.price-amount{font-size:34px;font-weight:700;color:var(--ink);line-height:1.1;}
.price-amount small{font-size:14px;font-weight:500;color:var(--ink-2);margin-left:6px;}
.price-card p{font-size:15px;color:var(--ink-2);margin:0;}
.price-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-2);padding:8px 0;}
.price-list i{color:var(--brand);margin-top:6px;font-size:14px;}
.price-card .btn{width:100%;margin-top:auto;}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-acc .accordion-item{border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-bottom:14px;background:#fff;}
.faq-acc .accordion-button{
  font-size:17px;font-weight:600;color:var(--ink);background:#fff;
  padding:20px 22px;box-shadow:none;border:0;
}
.faq-acc .accordion-button:not(.collapsed){background:rgba(108,75,255,.06);color:var(--brand);}
.faq-acc .accordion-button:focus{box-shadow:none;border:0;}
.faq-acc .accordion-button::after{
  background-image:none;content:'+';font-size:22px;font-weight:500;color:var(--brand);
  width:auto;height:auto;line-height:1;transform:none;transition:transform .25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:'−';transform:none;}
.faq-acc .accordion-body{padding:0 22px 22px;font-size:15px;color:var(--ink-2);line-height:1.8;}

/* CTA */
.cta-band{position:relative;background:var(--space);overflow:hidden;}
.cta-band .cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.16;}
.cta-band::after{content:'';position:absolute;inset:0;background:linear-gradient(110deg,rgba(15,12,26,.94),rgba(23,20,42,.86));}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:start;}
.cta-inner h2{color:#fff;margin-bottom:16px;}
.cta-inner p{color:var(--ink-inv-2);font-size:16px;}
.cta-points li{display:flex;gap:10px;color:var(--ink-inv-2);font-size:15px;padding:7px 0;}
.cta-points i{color:var(--lime);margin-top:6px;font-size:14px;}
.lead-form{background:rgba(255,255,255,.04);border:1px solid var(--line-inv);border-radius:var(--r-lg);padding:28px;display:grid;gap:16px;}
.lead-form label{font-size:14px;color:var(--ink-inv-2);display:block;margin-bottom:6px;}
.lead-form input,.lead-form textarea{
  width:100%;background:rgba(15,12,26,.7);border:1px solid var(--line-inv);
  border-radius:var(--r-input);padding:13px 15px;color:var(--ink-inv);font-size:15px;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.lead-form input::placeholder,.lead-form textarea::placeholder{color:rgba(169,163,192,.7);}
.lead-form input:focus,.lead-form textarea:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(201,242,77,.16);
}
.form-tip{margin:0;font-size:13px;color:var(--ink-inv-2);line-height:1.7;}
.form-ok{display:none;font-size:14px;color:var(--lime);}
.form-ok.show{display:block;}

/* 页脚 */
.site-footer{background:var(--space);color:var(--ink-inv-2);padding:64px 0 28px;border-top:1px solid var(--line-inv);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand-text{font-size:18px;}
.footer-brand p{font-size:14px;color:var(--ink-inv-2);margin:16px 0 12px;line-height:1.8;}
.footer-brand .tech{font-size:13px;color:rgba(169,163,192,.75);}
.footer-col h4{font-size:15px;color:var(--ink-inv);margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--ink-inv-2);}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-inv);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(169,163,192,.8);
}
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  width:48px;height:48px;border-radius:14px;border:1px solid var(--line-inv);
  background:rgba(23,20,42,.94);color:var(--ink-inv);font-size:16px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .25s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand);border-color:var(--brand);color:#fff;}

@media (max-width:1199.98px){
  h1{font-size:38px;}
  .hero h1{font-size:38px;}
  .nav-item{padding:8px 11px;font-size:13px;}
}
@media (max-width:991.98px){
  :root{--sec:64px;}
  .nav-links{display:none;}
  .nav-actions .btn{display:none;}
  .site-header{margin-bottom:-96px;}
  .hero{padding:160px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-float{left:16px;right:16px;bottom:12px;}
  .feature-grid{grid-template-columns:1fr;gap:22px;}
  .feature-tabs{flex-direction:row;overflow-x:auto;gap:10px;padding-bottom:6px;}
  .feature-tab{border-left:0;border:1px solid var(--line);border-radius:999px;padding:10px 16px;white-space:nowrap;font-size:14px;}
  .feature-tab.active{border-color:rgba(108,75,255,.5);}
  .feature-tab small{display:none;}
  .case-row,.case-row.reverse{grid-template-columns:1fr;gap:22px;}
  .case-row.reverse .case-media{order:1;}
  .case-row.reverse .case-text{order:2;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .news-card.featured{grid-column:span 2;flex-direction:column;}
  .news-card.featured img{width:100%;height:auto;aspect-ratio:16/10;}
  .price-grid{grid-template-columns:1fr;}
  .price-card.recommend{transform:none;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .scene-card{flex:0 0 74%;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  h2{font-size:24px;}
  .section{padding:56px 0;}
  .hero{padding:146px 0 62px;}
  .hero h1{font-size:27px;}
  .hero-stats li{padding-right:20px;margin-right:20px;}
  .hero-stats strong{font-size:24px;}
  .value-item{grid-template-columns:64px 1fr;gap:16px;padding:24px 0;}
  .value-num{font-size:22px;}
  .news-grid{grid-template-columns:1fr;}
  .news-card.featured{grid-column:span 1;}
  .scene-card{flex:0 0 84%;}
  .scene-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-text{font-size:15px;}
  .nav-panel{padding:8px 10px;gap:10px;}
  .brand-mark{width:36px;height:36px;font-size:15px;}
}

/* roulang page: category1 */
:root{
  --ink-900:#0F0C1A;
  --panel:#17142A;
  --paper:#F6F5FA;
  --primary:#6C4BFF;
  --primary-hover:#5738E6;
  --primary-active:#4A2FCB;
  --primary-soft:rgba(108,75,255,.08);
  --lime:#C9F24D;
  --teal:#3ED6C0;
  --text:#1E1B2E;
  --text-2:#6E6885;
  --text-inv:#ECE9F6;
  --text-inv-2:#A9A3C0;
  --line:#E4E1EE;
  --line-inv:rgba(255,255,255,.14);
  --success:#2FBF7A;
  --warn:#F2A03D;
  --danger:#E5484D;
  --r-lg:18px;
  --r-md:14px;
  --r-img:16px;
  --r-in:12px;
  --sh-1:0 1px 2px rgba(20,16,40,.06),0 8px 24px rgba(20,16,40,.08);
  --sh-2:0 12px 32px rgba(20,16,40,.14);
  --bs-body-font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",Roboto,sans-serif;
  --bs-body-color:#1E1B2E;
  --bs-link-color:#5738E6;
  --bs-link-hover-color:#4A2FCB;
  --bs-border-color:#E4E1EE;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary-hover);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--primary-active)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.2px}
h1{font-size:44px;line-height:1.25;letter-spacing:-.5px}
h2{font-size:32px;line-height:1.3}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1320px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-paper{background:var(--paper)}
.section-white{background:#FBFAFE}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--primary-hover);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);border-radius:2px}
.lead{font-size:17px;color:var(--text-2);max-width:760px}
.section-head{max-width:800px;margin-bottom:48px}
.section-head h2{margin-bottom:16px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  padding:12px 0 0;
  background:linear-gradient(180deg,rgba(15,12,26,.94) 0%,rgba(15,12,26,.72) 70%,rgba(15,12,26,0) 100%);
  transition:padding .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{padding-top:8px;background:rgba(15,12,26,.96)}
.nav-panel{
  display:flex;align-items:center;gap:20px;
  min-height:76px;
  padding:10px 16px 10px 18px;
  background:var(--panel);
  border:1px solid var(--line-inv);
  border-radius:var(--r-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 10px 30px rgba(9,6,20,.35);
  transition:min-height .2s ease;
}
.site-header.is-scrolled .nav-panel{min-height:64px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),#3F25B8);
  color:#F3F0FF;font-size:17px;
  box-shadow:0 6px 18px rgba(108,75,255,.35);
}
.brand-text{font-size:18px;font-weight:700;color:var(--text-inv);letter-spacing:-.3px;white-space:nowrap}
.brand-accent{color:var(--lime)}
.nav-links{display:flex;align-items:center;gap:10px;margin-left:8px;flex:1 1 auto;flex-wrap:nowrap}
.nav-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:var(--r-in);
  font-size:14px;font-weight:500;color:var(--text-inv-2);
  border:1px solid transparent;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.nav-item i{font-size:15px;color:var(--text-inv-2);transition:color .18s ease}
.nav-item:hover{background:var(--primary-soft);color:var(--text-inv);border-color:var(--line-inv)}
.nav-item:hover i{color:var(--primary)}
.nav-item.active{background:rgba(108,75,255,.18);color:#CDBFFF;border-color:rgba(108,75,255,.35)}
.nav-item.active i{color:var(--lime)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-in);
  background:rgba(255,255,255,.06);border:1px solid var(--line-inv);
  color:var(--text-inv);cursor:pointer;
}
.nav-toggle:hover{background:rgba(108,75,255,.2)}

/* 移动端 offcanvas */
.offcanvas.mobile-nav{background:var(--panel);color:var(--text-inv);width:min(92vw,420px);border:0}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line-inv);padding:18px 20px}
.mobile-nav .offcanvas-title{color:var(--text-inv);font-size:17px}
.mobile-nav .btn-close{filter:invert(1) grayscale(1) brightness(2);opacity:.75}
.mobile-nav .offcanvas-body{padding:20px}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}
.mobile-card{
  display:flex;flex-direction:column;gap:8px;
  padding:14px;border-radius:var(--r-md);
  background:rgba(255,255,255,.04);border:1px solid var(--line-inv);
  color:var(--text-inv);font-size:14px;
}
.mobile-card i{color:var(--teal);font-size:18px}
.mobile-card:hover{background:rgba(108,75,255,.16);color:#DAD1FF}
.mobile-card.active{background:rgba(108,75,255,.22);border-color:rgba(108,75,255,.45);color:#CDBFFF}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-in);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary,.btn.btn-primary{background:var(--primary);color:#F7F5FF;border-color:var(--primary)}
.btn-primary:hover,.btn.btn-primary:hover{background:var(--primary-hover);color:#FFFFFF;transform:translateY(-1px);box-shadow:0 12px 26px rgba(108,75,255,.32)}
.btn-primary:active,.btn.btn-primary:active{background:var(--primary-active);transform:translateY(0);box-shadow:none}
.btn-outline{background:transparent;color:var(--primary-hover);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-active)}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--text-inv);border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#FFFFFF;border-color:rgba(255,255,255,.4)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:11px}
.btn[disabled],.btn.disabled{opacity:.4;pointer-events:none}
.btn-block{width:100%}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-inv-2);margin-bottom:22px}
.crumb a{color:var(--text-inv-2)}
.crumb a:hover{color:var(--lime)}
.crumb .sep{opacity:.5}
.crumb .current{color:var(--text-inv-2);opacity:.85}

/* ============ 分类窄 Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);
  padding:28px 0 64px;
  color:var(--text-inv);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.9;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 8% 100%,rgba(15,12,26,.94) 0%,rgba(15,12,26,.72) 45%,rgba(15,12,26,.5) 100%),
    radial-gradient(60% 60% at 88% 6%,rgba(108,75,255,.22) 0%,rgba(15,12,26,0) 70%);
}
.cat-hero > .container{position:relative;z-index:2}
.cat-hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:48px;align-items:center;min-height:280px}
.cat-hero h1{color:var(--text-inv);max-width:16em}
.cat-hero .hero-desc{color:var(--text-inv-2);font-size:16.5px;margin-top:16px;max-width:34em}
.hero-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:20px;font-size:13.5px;color:var(--text-inv-2)}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta i{color:var(--teal)}
.anchor-cards{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.anchor-card{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 16px;border-radius:var(--r-in);
  background:rgba(255,255,255,.05);border:1px solid var(--line-inv);
  color:var(--text-inv);font-size:14px;font-weight:500;
}
.anchor-card i{color:var(--lime);font-size:13px}
.anchor-card:hover{background:rgba(108,75,255,.22);border-color:rgba(108,75,255,.45);color:#FFFFFF}
.hero-figure{position:relative}
.hero-figure img{width:100%;border-radius:20px;border:1px solid var(--line-inv);box-shadow:0 24px 60px rgba(6,4,16,.55);aspect-ratio:16/10;object-fit:cover}
.hero-figure .float-tag{
  position:absolute;left:-14px;bottom:-16px;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:var(--r-md);
  background:var(--panel);border:1px solid var(--line-inv);
  font-size:13.5px;color:var(--text-inv-2);
}
.hero-figure .float-tag strong{color:var(--lime);font-variant-numeric:tabular-nums}

/* ============ 图文交替 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split.reverse{grid-template-columns:.95fr 1.05fr}
.split.reverse .split-figure{order:-1}
.split-figure img{width:100%;border-radius:var(--r-img);aspect-ratio:16/10;object-fit:cover;box-shadow:var(--sh-1);border:1px solid var(--line)}
.split-figure .fig-note{font-size:13px;color:var(--text-2);text-align:center;margin-top:12px}
.feature-list{margin:24px 0 0}
.feature-list li{position:relative;padding-left:26px;margin-bottom:14px;color:var(--text-2);font-size:16px}
.feature-list li::before{content:"";position:absolute;left:6px;top:12px;width:8px;height:8px;border-radius:2px;background:var(--lime)}
.feature-list li strong{color:var(--text)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.tag{display:inline-flex;align-items:center;padding:6px 12px;border-radius:999px;font-size:13px;background:var(--primary-soft);color:var(--primary-hover);border:1px solid rgba(108,75,255,.2)}
.tag.teal{background:rgba(62,214,192,.12);color:#1F8E80;border-color:rgba(62,214,192,.35)}

/* 步骤条 */
.steps{counter-reset:step;margin-top:28px}
.steps li{
  position:relative;padding:18px 20px 18px 66px;margin-bottom:12px;
  background:#FBFAFE;border:1px solid var(--line);border-radius:var(--r-md);
  color:var(--text-2);font-size:15.5px;
}
.steps li::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;left:20px;top:18px;
  font-variant-numeric:tabular-nums;font-weight:700;font-size:15px;color:var(--primary-hover);
}
.steps li strong{display:block;color:var(--text);font-size:16px;margin-bottom:2px}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
}
.stat-strip .stat{background:#FBFAFE;padding:28px 26px}
.stat .stat-num{font-size:32px;font-weight:700;color:var(--primary-hover);font-variant-numeric:tabular-nums;line-height:1.2}
.stat .stat-num em{font-style:normal;font-size:16px;color:var(--text-2);margin-left:4px;font-weight:500}
.stat p{margin:8px 0 0;font-size:14.5px;color:var(--text-2)}

/* ============ 场景卡 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  display:flex;flex-direction:column;
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.scene-card .card-media{aspect-ratio:16/10;overflow:hidden}
.scene-card .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.scene-card:hover .card-media img{transform:scale(1.04)}
.scene-card .card-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-badge{align-self:flex-start;display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-size:12.5px;font-weight:600;background:rgba(62,214,192,.14);color:#1F8E80}
.scene-card h3{font-size:19px}
.scene-card p{font-size:15px;color:var(--text-2);margin:0}
.scene-card .card-foot{margin-top:auto;padding-top:12px;font-size:13.5px;color:var(--text-2);display:flex;align-items:center;gap:8px}
.scene-card .card-foot i{color:var(--primary)}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:var(--text-inv);
  border-radius:24px;padding:56px;
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center right;opacity:.5;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(90% 100% at 0% 100%,rgba(15,12,26,.95) 0%,rgba(15,12,26,.78) 55%,rgba(23,20,42,.72) 100%);
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{color:var(--text-inv);margin-bottom:14px}
.cta-band p{color:var(--text-inv-2);margin:0}
.cta-form{display:grid;gap:14px}
.cta-form .field{display:grid;gap:6px}
.cta-form label{font-size:13.5px;color:var(--text-inv-2)}
.cta-form input,.cta-form select{
  width:100%;min-height:48px;padding:0 14px;border-radius:var(--r-in);
  background:rgba(255,255,255,.05);border:1px solid var(--line-inv);
  color:var(--text-inv);font-size:15px;
  transition:border-color .18s ease,background-color .18s ease;
}
.cta-form input::placeholder{color:rgba(169,163,192,.75)}
.cta-form input:focus,.cta-form select:focus{
  outline:none;border-color:var(--lime);background:rgba(255,255,255,.09);box-shadow:0 0 0 3px rgba(201,242,77,.18);
}
.cta-form select option{color:#1E1B2E}
.form-note{font-size:12.5px;color:var(--text-inv-2);opacity:.85;margin:0}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-img)!important;
  margin-bottom:14px;overflow:hidden;
}
.accordion-button{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:20px 22px;background:#FFFFFF;border:0;
  font-size:17px;font-weight:600;color:var(--text);text-align:left;
  box-shadow:none!important;
}
.accordion-button::after{display:none}
.accordion-button:not(.collapsed){color:var(--primary-hover);background:rgba(108,75,255,.05)}
.faq-icon{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary-hover);font-size:12px;
  transition:transform .22s ease,background-color .2s ease,color .2s ease;
}
.accordion-button:not(.collapsed) .faq-icon{transform:rotate(135deg);background:var(--primary);color:#FFFFFF}
.accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text-2)}
.accordion-body strong{color:var(--text)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:var(--text-inv-2);border-top:1px solid var(--line-inv);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-text{display:block;font-size:19px;margin-bottom:14px}
.footer-brand p{font-size:14.5px;line-height:1.8;max-width:32em}
.footer-brand .tech{font-size:13px;color:rgba(169,163,192,.7);margin-top:10px}
.footer-col h4{color:var(--text-inv);font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:var(--text-inv-2);font-size:14.5px;display:inline-flex;align-items:center;gap:8px}
.footer-col ul li a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line-inv);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(169,163,192,.8);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 16px;
  border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line-inv);
  color:var(--text-inv);font-size:13.5px;cursor:pointer;
}
.to-top:hover{background:rgba(108,75,255,.22);color:#FFFFFF}

/* ============ 响应式 ============ */
@media (max-width:1399px){
  .container{max-width:1200px}
}
@media (max-width:1199px){
  .container{max-width:960px}
  h1{font-size:38px}
  h2{font-size:28px}
  .cat-hero-grid{gap:36px}
  .split,.split.reverse{gap:40px}
  .section{padding:80px 0}
}
@media (max-width:991px){
  .container{max-width:720px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-cta{display:none}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:19px}
  h4{font-size:17px}
  body{font-size:16px;line-height:1.75}
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .cat-hero{padding:24px 0 56px}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;min-height:0}
  .hero-figure .float-tag{left:12px;bottom:-18px}
  .split,.split.reverse{grid-template-columns:1fr;gap:28px}
  .split.reverse .split-figure{order:0}
  .card-grid{grid-template-columns:1fr 1fr;gap:20px}
  .stat-strip{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:36px 26px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section-head{margin-bottom:36px}
}
@media (max-width:575px){
  .container{max-width:540px;padding:0 18px}
  .brand-text{font-size:16px}
  .brand-mark{width:36px;height:36px;font-size:15px}
  .nav-panel{min-height:66px;padding:8px 12px}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 20px}
  .steps li{padding:16px 16px 16px 58px}
  .steps li::before{left:16px;top:16px}
  .hero-meta{gap:12px;font-size:13px}
  .anchor-cards{gap:8px}
  .anchor-card{padding:0 13px;font-size:13.5px}
  h1{font-size:26px}
}

/* roulang page: article */
:root{
  --deep:#0F0C1A;
  --deep-panel:#17142A;
  --paper:#F6F5FA;
  --card:#FFFFFF;
  --primary:#6C4BFF;
  --primary-hover:#5738E6;
  --primary-active:#4A2FCB;
  --primary-soft:rgba(108,75,255,.08);
  --primary-soft-2:rgba(108,75,255,.12);
  --lime:#C9F24D;
  --lime-ink:#7E9E12;
  --teal:#3ED6C0;
  --ink:#1E1B2E;
  --ink-2:#6E6885;
  --ink-d:#ECE9F6;
  --ink-d2:#A9A3C0;
  --line:#E4E1EE;
  --line-d:rgba(255,255,255,.14);
  --ok:#2FBF7A;
  --warn:#F2A03D;
  --err:#E5484D;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --sh-1:0 1px 2px rgba(20,16,40,.06),0 8px 24px rgba(20,16,40,.08);
  --sh-2:0 12px 32px rgba(20,16,40,.14);
  --gap-section:104px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.2px}
p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.container{
  width:100%;
  max-width:1320px;
  margin-left:auto;
  margin-right:auto;
  padding-left:24px!important;
  padding-right:24px!important;
}
@media (max-width:1399.98px){.container{max-width:1140px}}
@media (max-width:1199.98px){.container{max-width:960px}}
@media (max-width:991.98px){.container{max-width:720px;padding-left:20px!important;padding-right:20px!important}}
@media (max-width:767.98px){.container{max-width:540px}}
@media (max-width:575.98px){.container{max-width:100%;padding-left:16px!important;padding-right:16px!important}}
@media (max-width:991.98px){:root{--gap-section:64px}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:12px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn i{font-size:14px}
.btn-primary{background:var(--primary);color:#F6F5FA}
.btn-primary:hover{background:var(--primary-hover);color:#F6F5FA;transform:translateY(-1px);box-shadow:0 12px 28px rgba(108,75,255,.36)}
.btn-primary:active{background:var(--primary-active);transform:translateY(0);box-shadow:none}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-hover)}
.btn-ghost{border-color:rgba(255,255,255,.18);color:var(--ink-d);background:transparent}
.btn-ghost:hover{border-color:rgba(255,255,255,.42);background:rgba(255,255,255,.06);color:#FFFFFF}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;transform:none;box-shadow:none}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--deep);
  padding:12px 0;
  border-bottom:1px solid rgba(255,255,255,.05);
  transition:padding .25s ease;
}
.site-header.is-compact{padding:8px 0;box-shadow:0 10px 30px rgba(0,0,0,.35)}
.nav-panel{
  display:flex;align-items:center;gap:20px;
  min-height:72px;padding:10px 16px 10px 18px;
  background:var(--deep-panel);
  border:1px solid var(--line-d);
  border-radius:var(--r-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 14px 34px rgba(0,0,0,.3);
  transition:min-height .25s ease;
}
.site-header.is-compact .nav-panel{min-height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(108,75,255,.16);border:1px solid rgba(108,75,255,.42);
  color:var(--lime);font-size:16px;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-d);letter-spacing:.2px;white-space:nowrap}
.brand-accent{color:#A493FF;margin-left:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 13px;border-radius:12px;
  font-size:14px;font-weight:500;color:var(--ink-d2);
  border:1px solid transparent;
}
.nav-item i{font-size:15px;color:var(--ink-d2);transition:color .2s ease}
.nav-item:hover{background:var(--primary-soft-2);color:var(--ink-d)}
.nav-item:hover i{color:#A493FF}
.nav-item.active{background:var(--primary-soft-2);color:#B9ABFF;border-color:rgba(108,75,255,.34)}
.nav-item.active i{color:var(--lime)}
.nav-cta{flex:0 0 auto;height:42px;min-height:42px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-d);
  color:var(--ink-d);align-items:center;justify-content:center;font-size:17px;
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.mobile-drawer{
  width:330px;background:var(--deep-panel);color:var(--ink-d);
  border-left:1px solid var(--line-d);border-radius:20px 0 0 20px;
}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line-d);padding:18px 20px}
.mobile-drawer .offcanvas-body{padding:20px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.06);
  border:1px solid var(--line-d);color:var(--ink-d);
}
.drawer-close:hover{background:rgba(255,255,255,.12)}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:18px}
.drawer-card{
  display:flex;flex-direction:column;gap:8px;
  padding:14px;border-radius:var(--r-md);
  background:rgba(255,255,255,.04);border:1px solid var(--line-d);
  font-size:14px;color:var(--ink-d2);
}
.drawer-card i{font-size:18px;color:#A493FF}
.drawer-card:hover{background:var(--primary-soft-2);color:var(--ink-d)}
.drawer-card.active{border-color:rgba(108,75,255,.44);background:var(--primary-soft-2);color:#B9ABFF}
.drawer-card.active i{color:var(--lime)}
@media (max-width:991.98px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-panel{gap:12px}
}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:30px 0 84px;
  background:var(--deep);
  color:var(--ink-d);
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.34;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(46% 60% at 84% 18%, rgba(108,75,255,.28) 0%, rgba(15,12,26,0) 68%),
    linear-gradient(100deg, rgba(15,12,26,.95) 0%, rgba(15,12,26,.82) 46%, rgba(15,12,26,.72) 100%);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--ink-d2);line-height:1.6;
}
.breadcrumb-bar a{color:var(--ink-d2)}
.breadcrumb-bar a:hover{color:var(--lime)}
.breadcrumb-bar .sep{color:rgba(255,255,255,.28)}
.breadcrumb-bar .crumb-current{color:rgba(236,233,246,.62);max-width:640px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom}
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:22px;padding:5px 13px;border-radius:999px;
  background:rgba(201,242,77,.13);border:1px solid rgba(201,242,77,.32);
  color:var(--lime);font-size:13px;font-weight:600;letter-spacing:.2px;
}
.article-hero h1{
  margin:16px 0 20px;
  font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.5px;
  color:#F4F2FC;max-width:900px;
}
.meta-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:20px;
  font-size:13.5px;color:var(--ink-d2);
}
.meta-bar span{display:inline-flex;align-items:center;gap:7px}
.meta-bar i{color:var(--teal);font-size:13px}
@media (max-width:991.98px){
  .article-hero{padding:22px 0 68px}
  .article-hero h1{font-size:34px}
}
@media (max-width:575.98px){
  .article-hero h1{font-size:28px;line-height:1.3}
  .meta-bar{gap:12px;font-size:13px}
  .breadcrumb-bar .crumb-current{max-width:200px}
}

/* ============ 正文区 ============ */
.article-main{background:var(--paper);padding-bottom:var(--gap-section)}
.read-card{
  position:relative;z-index:3;
  max-width:900px;margin:-48px auto 0;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:44px 46px 40px;
  box-shadow:var(--sh-1);
}
.article-body{max-width:800px;margin:0 auto;font-size:17px;line-height:1.8;color:var(--ink)}
.article-body > :first-child{margin-top:0}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  font-size:32px;line-height:1.3;font-weight:700;
  margin:40px 0 16px;padding-left:14px;
  border-left:4px solid var(--primary);color:var(--ink);
}
.article-body h3{font-size:22px;line-height:1.4;font-weight:600;margin:32px 0 12px}
.article-body h4{font-size:18px;line-height:1.5;font-weight:600;margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.42em 0}
.article-body li::marker{color:var(--lime-ink);font-weight:700}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  border-left:3px solid var(--primary);
  background:var(--primary-soft);
  border-radius:0 12px 12px 0;
  color:#3B3652;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:16px;margin:26px auto;height:auto}
.article-body figure{margin:26px 0}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--ink-2);text-align:center}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--primary-hover)}
.article-body strong{font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:#F1EFF8;font-weight:600}
.article-body code{background:#F1EFF8;border-radius:6px;padding:2px 6px;font-size:.92em}
.not-found{
  max-width:640px;margin:0 auto;text-align:center;padding:24px 0 8px;
}
.not-found i{font-size:34px;color:var(--primary);opacity:.7}
.not-found h2{font-size:24px;margin:16px 0 10px;font-weight:700}
.not-found p{color:var(--ink-2);font-size:15.5px;margin-bottom:22px}
@media (max-width:991.98px){
  .read-card{padding:30px 26px 28px;border-radius:16px;margin-top:-40px}
  .article-body h2{font-size:25px;margin-top:34px}
  .article-body h3{font-size:19px}
}
@media (max-width:575.98px){
  .read-card{padding:22px 18px 22px}
  .article-body{font-size:16px}
  .article-body h2{font-size:22px}
}

/* ============ 标签 / 延伸卡 ============ */
.after-body{max-width:900px;margin:0 auto}
.post-tags{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin-top:32px;padding-top:24px;border-top:1px solid var(--line);
}
.tags-title{font-size:13px;color:var(--ink-2);letter-spacing:.4px}
.tag-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:999px;font-size:13.5px;
  background:var(--primary-soft);border:1px solid rgba(108,75,255,.16);
  color:var(--primary);font-weight:500;
}
.tag-chip:hover{background:var(--primary-soft-2);border-color:rgba(108,75,255,.34)}
.next-prev{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px}
.np-card{
  display:block;padding:22px 24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.np-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(108,75,255,.36)}
.np-label{display:block;font-size:12.5px;color:var(--ink-2);letter-spacing:.4px;margin-bottom:8px}
.np-title{display:block;font-size:18px;font-weight:600;color:var(--ink);margin-bottom:6px}
.np-card:hover .np-title{color:var(--primary)}
.np-desc{display:block;font-size:14px;color:var(--ink-2);line-height:1.65}
.np-next{text-align:right}
@media (max-width:767.98px){
  .next-prev{grid-template-columns:1fr}
  .np-next{text-align:left}
}

/* ============ 相关推荐 ============ */
.related{max-width:1140px;margin:0 auto;padding-top:64px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px}
.related-head h2{font-size:30px;line-height:1.3;font-weight:700}
.related-head p{font-size:14px;color:var(--ink-2);margin-top:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.res-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.res-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(108,75,255,.3)}
.res-thumb{
  aspect-ratio:16/10;overflow:hidden;
  background:var(--primary-soft);
  border-bottom:1px solid var(--line);
}
.res-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.res-card:hover .res-thumb img{transform:scale(1.04)}
.res-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.res-body h3{font-size:18px;line-height:1.45;font-weight:600}
.res-card:hover .res-body h3{color:var(--primary)}
.res-body p{font-size:14px;color:var(--ink-2);line-height:1.7;flex:1}
.res-more{font-size:13.5px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.chip{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(201,242,77,.2);color:#5F7A0B;
}
@media (max-width:991.98px){.card-grid{grid-template-columns:1fr 1fr}.related-head h2{font-size:24px}}
@media (max-width:575.98px){.card-grid{grid-template-columns:1fr}}

/* ============ 底部 CTA ============ */
.cta-band{
  margin-top:var(--gap-section);
  background:var(--deep);
  color:var(--ink-d);
  padding:66px 0;
  border-top:1px solid var(--line-d);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap}
.cta-inner h2{font-size:30px;line-height:1.3;font-weight:700;color:#F4F2FC}
.cta-inner p{font-size:15px;color:var(--ink-d2);margin-top:10px;max-width:520px}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
@media (max-width:767.98px){
  .cta-band{padding:48px 0}
  .cta-inner h2{font-size:23px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 160px}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--deep);
  border-top:1px solid var(--line-d);
  padding:66px 0 26px;
  color:var(--ink-d2);
  font-size:14px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand-text{display:inline-block;font-size:18px;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--ink-d2);max-width:320px}
.footer-brand .tech{margin-top:14px;font-size:13px;color:rgba(169,163,192,.72)}
.footer-col h4{font-size:15px;font-weight:600;color:var(--ink-d);margin-bottom:16px;letter-spacing:.2px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--ink-d2)}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(169,163,192,.72);
}
.to-top{
  position:fixed;right:22px;bottom:24px;z-index:1040;
  width:46px;height:46px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);color:#F6F5FA;border:0;cursor:pointer;
  box-shadow:0 12px 28px rgba(108,75,255,.38);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s,background-color .2s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--primary-hover)}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:575.98px){
  .site-footer{padding:48px 0 22px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --bg-deep:#0F0C1A;
  --panel:#17142A;
  --bg-light:#F6F5FA;
  --primary:#6C4BFF;
  --primary-hover:#5738E6;
  --primary-active:#4A2FCB;
  --accent:#C9F24D;
  --mint:#3ED6C0;
  --text:#1E1B2E;
  --text-sub:#6E6885;
  --text-on-dark:#ECE9F6;
  --text-on-dark-sub:#A9A3C0;
  --line:#E4E1EE;
  --line-dark:rgba(255,255,255,.14);
  --ok:#2FBF7A;
  --warn:#F2A03D;
  --err:#E5484D;
  --r-lg:18px;
  --r-md:14px;
  --r-img:16px;
  --r-input:12px;
  --r-btn:12px;
  --sh-1:0 1px 2px rgba(20,16,40,.06),0 8px 24px rgba(20,16,40,.08);
  --sh-2:0 12px 32px rgba(20,16,40,.14);
  --sh-dark:inset 0 1px 0 rgba(255,255,255,.06),0 12px 32px rgba(8,6,20,.45);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg-light);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.5px}
h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.3px}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
p{line-height:1.8}
strong{font-weight:600}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1320px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1050;
  padding:14px 0 6px;
  transition:padding .25s ease;
}
.site-header.scrolled{padding:8px 0 4px}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--panel);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-dark);
  padding:10px 14px 10px 18px;
  min-height:76px;
  transition:min-height .25s ease,box-shadow .25s ease;
}
.site-header.scrolled .nav-panel{min-height:64px;box-shadow:0 10px 28px rgba(8,6,20,.5)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:rgba(108,75,255,.18);
  border:1px solid rgba(108,75,255,.45);
  color:var(--accent);font-size:15px;
}
.brand-text{font-size:18px;font-weight:700;color:var(--text-on-dark);letter-spacing:.2px;white-space:nowrap}
.brand-accent{color:var(--accent);margin-left:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:14px;flex:1 1 auto}
.nav-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 13px;border-radius:12px;
  font-size:14px;color:var(--text-on-dark-sub);
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  min-height:44px;
}
.nav-item i{font-size:16px;color:var(--text-on-dark-sub);transition:color .2s ease}
.nav-item:hover{background:rgba(108,75,255,.12);color:var(--text-on-dark);border-color:rgba(108,75,255,.28)}
.nav-item:hover i{color:var(--primary)}
.nav-item.active{
  background:rgba(108,75,255,.16);
  color:#fff;
  border-color:rgba(108,75,255,.5);
  box-shadow:inset 3px 0 0 var(--accent);
}
.nav-item.active i{color:var(--accent)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(108,75,255,.16);border:1px solid rgba(108,75,255,.4);
  color:var(--text-on-dark);cursor:pointer;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  padding:13px 24px;
  font-size:16px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  min-height:44px;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn-primary{background:var(--primary);color:#F8F7FF;box-shadow:0 8px 20px rgba(108,75,255,.32)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 14px 30px rgba(108,75,255,.42);color:#fff}
.btn-primary:active{background:var(--primary-active);transform:translateY(0);box-shadow:0 6px 16px rgba(108,75,255,.3)}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:rgba(108,75,255,.08)}
.btn-ghost{border-color:rgba(255,255,255,.18);color:var(--text-on-dark);background:transparent}
.btn-ghost:hover{border-color:rgba(255,255,255,.45);background:rgba(255,255,255,.06)}
.btn:disabled{opacity:.4;transform:none;box-shadow:none;cursor:not-allowed}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:14px;color:var(--text-on-dark-sub);line-height:1.6}
.crumb a{color:var(--text-on-dark-sub);transition:color .2s ease}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--text-on-dark)}

/* ============ 分类窄 Hero ============ */
.cat-hero{
  position:relative;
  margin-top:-96px;
  padding:150px 0 72px;
  background:var(--bg-deep);
  overflow:hidden;
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.9;
}
.cat-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 420px at 12% 30%,rgba(108,75,255,.28),transparent 62%),
    linear-gradient(115deg,rgba(15,12,26,.94) 0%,rgba(15,12,26,.82) 48%,rgba(15,12,26,.68) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero-inner{
  display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;
  margin-top:26px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  padding:6px 12px;border-radius:999px;
  background:rgba(108,75,255,.16);
  border:1px solid rgba(108,75,255,.4);
  color:#D9D2FF;
}
.eyebrow i{color:var(--accent);font-size:12px}
.cat-hero h1{color:#fff;margin:18px 0 14px;max-width:14em}
.hero-sub{color:var(--text-on-dark-sub);font-size:18px;max-width:34em}
.anchor-cards{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.anchor-card{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 15px;border-radius:12px;
  background:rgba(23,20,42,.72);
  border:1px solid var(--line-dark);
  color:var(--text-on-dark);font-size:14px;
  min-height:44px;
  transition:border-color .2s ease,background .2s ease,transform .2s ease,color .2s ease;
}
.anchor-card i{color:var(--mint);font-size:14px}
.anchor-card:hover{border-color:rgba(201,242,77,.6);background:rgba(23,20,42,.92);transform:translateY(-2px);color:#fff}
.cat-hero-media{position:relative}
.cat-hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:20px;border:1px solid var(--line-dark);
  box-shadow:0 24px 48px rgba(6,4,16,.55);
}
.cat-hero-media .float-tag{
  position:absolute;left:-14px;bottom:-16px;
  background:var(--panel);
  border:1px solid var(--line-dark);
  border-radius:var(--r-md);
  padding:10px 16px;font-size:13px;color:var(--text-on-dark-sub);
  box-shadow:var(--sh-dark);
}
.cat-hero-media .float-tag b{color:var(--accent);font-variant-numeric:tabular-nums;font-size:16px;margin-right:4px}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-deep{background:var(--bg-deep);color:var(--text-on-dark)}
.section-deep h2,.section-deep h3{color:#fff}
.section-deep p{color:var(--text-on-dark-sub)}
.section-head{max-width:820px;margin-bottom:44px}
.section-head h2{margin:16px 0 12px}
.section-head p{color:var(--text-sub);font-size:17px}
.section-deep .section-head p{color:var(--text-on-dark-sub)}
.divider{height:1px;background:var(--line);border:0;margin:0}
.section-deep .divider{background:var(--line-dark)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;padding:5px 11px;border-radius:999px;
  background:rgba(108,75,255,.1);color:var(--primary);
  border:1px solid rgba(108,75,255,.24);
}

/* ============ 步骤卡（两列） ============ */
.step-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(108,75,255,.35)}
.step-top{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.step-num{
  font-size:22px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:.5px;
  min-width:44px;height:44px;border-radius:13px;
  display:grid;place-items:center;
  background:rgba(108,75,255,.08);
  border:1px solid rgba(108,75,255,.22);
}
.step-card h3{font-size:19px}
.step-card p{color:var(--text-sub);font-size:16px}
.step-meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.step-meta span{
  font-size:13px;color:var(--text-sub);
  background:var(--bg-light);border:1px solid var(--line);
  padding:4px 10px;border-radius:999px;
}

/* ============ 两栏图文要点组 ============ */
.method-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.method-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.method-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.method-media{position:relative;background:rgba(108,75,255,.06)}
.method-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.method-media .badge-line{
  position:absolute;left:16px;top:16px;
  background:rgba(15,12,26,.82);
  color:#fff;font-size:13px;padding:6px 12px;border-radius:999px;
  border:1px solid var(--line-dark);
  display:inline-flex;align-items:center;gap:7px;
}
.method-media .badge-line i{color:var(--accent);font-size:12px}
.method-body{padding:24px;flex:1 1 auto}
.method-body h3{margin-bottom:12px;font-size:20px}
.check-list li{
  position:relative;padding-left:22px;margin-bottom:10px;
  color:var(--text-sub);font-size:16px;
}
.check-list li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:8px;height:8px;border-radius:3px;background:var(--accent);
}
.method-body .foot-note{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:14px;color:var(--text-sub);
}

/* ============ 异常处理：左文右图 ============ */
.issue-wrap{display:grid;grid-template-columns:7fr 5fr;gap:46px;align-items:start}
.issue-list li{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);
}
.issue-list li:first-child{padding-top:0}
.issue-list .ico{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(62,214,192,.1);border:1px solid rgba(62,214,192,.35);
  color:var(--mint);font-size:16px;
}
.issue-list h4{margin-bottom:6px;font-size:17px}
.issue-list p{color:var(--text-sub);font-size:16px}
.issue-media{position:sticky;top:110px}
.issue-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--sh-1);
}
.tip-block{
  margin-top:22px;
  background:var(--panel);color:var(--text-on-dark);
  border:1px solid var(--line-dark);border-radius:var(--r-md);
  padding:20px 20px 18px;
}
.tip-block strong{display:block;color:var(--accent);font-size:15px;margin-bottom:6px}
.tip-block p{color:var(--text-on-dark-sub);font-size:15px}

/* ============ 自查清单 ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 26px}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;font-size:16px;color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.check-item:hover{border-color:rgba(108,75,255,.35);box-shadow:var(--sh-1);transform:translateY(-2px)}
.check-item i{color:var(--ok);margin-top:5px;font-size:15px}
.check-item span{color:var(--text-sub);font-size:14px;display:block;margin-top:2px}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-img) !important;
  margin-bottom:14px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:#fff;color:var(--text);
  font-size:17px;font-weight:600;line-height:1.6;
  padding:20px 22px;box-shadow:none;
}
.faq-acc .accordion-button:not(.collapsed){
  background:rgba(108,75,255,.06);color:var(--primary);
}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-acc .accordion-button::after{
  content:"+";background-image:none;
  font-size:22px;font-weight:400;color:var(--primary);
  width:26px;height:26px;line-height:1;
  display:grid;place-items:center;
  transform:none;transition:transform .25s ease,color .25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);color:var(--primary-active)}
.faq-acc .accordion-body{
  padding:0 22px 22px;color:var(--text-sub);font-size:15px;line-height:1.8;
}

/* ============ 底部 CTA ============ */
.cta-band{
  background:var(--bg-deep);color:var(--text-on-dark);
  padding:88px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(720px 320px at 88% 18%,rgba(108,75,255,.26),transparent 66%);
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:2}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.cta-copy h2{color:#fff;margin-bottom:14px}
.cta-copy > p{color:var(--text-on-dark-sub)}
.cta-points{margin-top:22px;display:grid;gap:10px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-on-dark-sub)}
.cta-points i{color:var(--accent);margin-top:6px;font-size:13px}
.cta-form{
  background:var(--panel);border:1px solid var(--line-dark);
  border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-dark);
}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:14px;color:var(--text-on-dark-sub);margin-bottom:8px}
.form-field input,.form-field textarea{
  width:100%;background:rgba(15,12,26,.75);
  border:1px solid var(--line-dark);border-radius:var(--r-input);
  padding:12px 14px;color:var(--text-on-dark);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input::placeholder,.form-field textarea::placeholder{color:rgba(169,163,192,.75)}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(201,242,77,.16);
}
.privacy{margin-top:12px;font-size:13px;color:var(--text-on-dark-sub);text-align:center}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-deep);color:var(--text-on-dark-sub);
  border-top:1px solid var(--line-dark);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-text{font-size:19px;display:inline-block;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:34em}
.footer-brand .tech{margin-top:12px;font-size:13px;color:rgba(169,163,192,.72)}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-on-dark-sub);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(169,163,192,.8);
}
.back-top{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(108,75,255,.16);border:1px solid rgba(108,75,255,.4);
  color:var(--text-on-dark);border-radius:12px;padding:8px 14px;font-size:13px;cursor:pointer;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.back-top:hover{background:rgba(108,75,255,.3);border-color:var(--accent);transform:translateY(-2px)}

/* ============ 移动端 Offcanvas ============ */
.mobile-nav{background:var(--panel) !important;color:var(--text-on-dark);border-left:1px solid var(--line-dark)}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line-dark);padding:18px 20px}
.mobile-nav .btn-close{filter:invert(1) grayscale(1) brightness(1.8);opacity:.7}
.m-nav-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:20px}
.m-nav-grid a{
  display:flex;flex-direction:column;gap:8px;
  background:rgba(108,75,255,.12);border:1px solid var(--line-dark);
  border-radius:var(--r-md);padding:14px;font-size:14px;color:var(--text-on-dark);
}
.m-nav-grid a i{font-size:18px;color:var(--mint)}
.m-nav-grid a.active{background:rgba(108,75,255,.26);border-color:rgba(108,75,255,.55);box-shadow:inset 3px 0 0 var(--accent)}
.m-nav-grid a.active i{color:var(--accent)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  h1{font-size:38px}
  h2{font-size:28px}
  .container{max-width:1140px}
  .issue-wrap{gap:34px}
}
@media (max-width:991px){
  h1{font-size:32px}
  h2{font-size:25px}
  .container{max-width:960px;padding:0 20px}
  .nav-links{display:none}
  .nav-actions .btn{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-panel{min-height:68px;padding:9px 12px}
  .cat-hero{margin-top:-88px;padding:130px 0 60px}
  .cat-hero-inner{grid-template-columns:1fr;gap:32px}
  .cat-hero h1{max-width:none}
  .cat-hero-media{order:-1}
  .cat-hero-media .float-tag{left:12px;bottom:-14px}
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  body{font-size:16px}
  h1{font-size:28px}
  h2{font-size:23px}
  h3{font-size:19px}
  .container{max-width:720px;padding:0 16px}
  .step-grid,.method-grid,.check-grid,.cta-grid{grid-template-columns:1fr}
  .issue-wrap{grid-template-columns:1fr;gap:28px}
  .issue-media{position:static}
  .issue-media img{aspect-ratio:16/10}
  .cta-band{padding:64px 0}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-sub{font-size:16px}
}
@media (max-width:575px){
  h1{font-size:25px}
  .container{max-width:100%;padding:0 16px}
  .brand-text{font-size:16px}
  .anchor-cards{gap:8px}
  .anchor-card{font-size:13px;padding:9px 12px}
  .m-nav-grid{grid-template-columns:1fr}
  .step-card,.method-body,.cta-form{padding:20px}
  .cat-hero{padding:120px 0 52px}
}