/* roulang page: index */
:root{
  --bg:#0E0F13;--surface-1:#16181F;--surface-2:#1E2129;--line:#242833;--line-strong:#3A4150;
  --brand:#B8F24B;--brand-hi:#CDFF6B;--brand-soft:rgba(184,242,75,.12);
  --accent:#7A5CFF;--accent-soft:rgba(122,92,255,.16);--accent-text:#A995FF;
  --alert:#FF6A2B;--text:#EDEFF4;--text-2:#9BA1B0;--text-3:#6C7280;
  --side:#12141A;--foot:#0A0B0E;
  --r-card:14px;--r-btn:10px;--r-input:10px;--r-img:12px;--r-block:20px;--r-pill:999px;
  --s1:8px;--s2:16px;--s3:24px;--s4:32px;--s5:48px;--s6:64px;--s7:96px;
  --bs-primary:#B8F24B;--bs-body-bg:#0E0F13;--bs-body-color:#EDEFF4;--bs-border-color:#242833;
  --bs-border-radius:10px;--bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-link-color:#B8F24B;--bs-link-hover-color:#CDFF6B;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--bs-font-sans-serif);
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px);background-size:100% 64px;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;transition:color .16s ease}
a:hover{color:var(--brand-hi)}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.2;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:1px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 3px rgba(184,242,75,.15)}
.num{font-variant-numeric:tabular-nums}

/* ============ App Shell ============ */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:248px;background:var(--side);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;
}
.brand{height:72px;display:flex;align-items:center;gap:10px;padding:0 20px;border-bottom:1px solid var(--line)}
.brand-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--brand),#6FBF1A);
  color:#0E0F13;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;flex:0 0 34px}
.brand-text{font-size:15px;font-weight:800;color:var(--text);white-space:nowrap}
.brand-text span{display:block;font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.08em}
.side-nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;flex:1}
.nav-item{
  display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:10px;color:var(--text-2);
  font-size:15px;position:relative;border:1px solid transparent;transition:background .16s ease,color .16s ease
}
.nav-item i{width:20px;text-align:center;font-size:16px}
.nav-item:hover{background:rgba(255,255,255,.04);color:var(--text)}
.nav-item.active{background:var(--brand-soft);color:var(--brand);border-color:rgba(184,242,75,.22)}
.nav-item.active::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:2px;background:var(--brand)}
.side-cta{margin:12px;padding:18px;border-radius:var(--r-card);background:var(--surface-1);border:1px solid var(--line)}
.side-cta p{font-size:13px;line-height:1.7;color:var(--text-2);margin-bottom:12px}
.side-cta .btn-lime{width:100%;justify-content:center}
.app-main{margin-left:248px;min-height:100vh;display:flex;flex-direction:column}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* mobile top bar + drawer */
.topbar{display:none;position:fixed;top:0;left:0;right:0;height:56px;background:var(--side);
  border-bottom:1px solid var(--line);z-index:1050;align-items:center;justify-content:space-between;padding:0 16px}
.topbar .brand-text{font-size:14px}
.burger{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;
  color:var(--text);display:flex;align-items:center;justify-content:center;cursor:pointer}
.backdrop{position:fixed;inset:0;background:rgba(0,0,0,.55);opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:1055}
.backdrop.show{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;left:0;bottom:0;width:82vw;max-width:320px;background:var(--side);z-index:1060;
  transform:translateX(-100%);transition:transform .24s ease;display:flex;flex-direction:column;border-right:1px solid var(--line)}
.drawer.open{transform:translateX(0)}
.drawer .nav-item{padding:13px 14px;min-height:44px;font-size:16px}

/* ============ Buttons ============ */
.btn-lime,.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .16s ease
}
.btn-lime{background:var(--brand);color:#0E0F13}
.btn-lime:hover{background:var(--brand-hi);color:#0E0F13;box-shadow:0 6px 18px rgba(184,242,75,.25)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow i{transition:transform .16s ease}
.link-arrow:hover i{transform:translateX(3px)}
.link-arrow:hover{text-decoration:underline}
.badge-cat,.badge-state{display:inline-flex;align-items:center;border-radius:var(--r-pill);font-size:12px;padding:4px 10px;line-height:1.6}
.badge-cat{background:var(--accent-soft);color:var(--accent-text)}
.badge-state{background:var(--brand-soft);color:var(--brand)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;font-weight:700}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand)}

/* ============ Sections ============ */
.section{padding:96px 0;border-top:1px solid var(--line)}
.section:first-of-type{border-top:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:40px;margin-top:12px}
.section-head p{color:var(--text-2);font-size:15px;max-width:520px;margin-top:10px}
.section-head.center{flex-direction:column;align-items:center;text-align:center}
.sec-sub{font-size:15px;color:var(--text-2);max-width:640px}

/* ============ Hero ============ */
.hero{padding:80px 0 88px;position:relative;overflow:hidden;
  background:radial-gradient(680px 320px at 88% 8%,rgba(122,92,255,.16),transparent 70%),
  radial-gradient(560px 280px at 8% 92%,rgba(184,242,75,.10),transparent 70%)}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center}
.hero h1{font-size:56px;line-height:1.15;margin:20px 0 18px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:17px;color:var(--text-2);max-width:460px;line-height:1.85}
.hero-actions{display:flex;gap:14px;margin:30px 0 36px;flex-wrap:wrap}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;border-top:1px solid var(--line);padding-top:24px}
.stat b{display:block;font-size:32px;line-height:1.1;color:var(--brand);font-weight:800}
.stat span{display:block;font-size:13px;color:var(--text-3);margin-top:6px}
.hero-media{position:relative;border-radius:var(--r-block);overflow:hidden;border:1px solid var(--line);
  background:var(--surface-1);aspect-ratio:7/5}
.hero-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.hero-media::after{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;opacity:.6;pointer-events:none}
.hero-beam{position:absolute;top:-30%;left:-20%;width:70%;height:160%;transform:rotate(18deg);
  background:linear-gradient(to bottom,rgba(184,242,75,.22),rgba(184,242,75,0));pointer-events:none}
.hero-tag{position:absolute;left:18px;bottom:18px;background:rgba(14,15,19,.86);border:1px solid var(--line-strong);
  border-radius:var(--r-pill);padding:8px 16px;font-size:13px;color:var(--text);display:flex;align-items:center;gap:8px}
.hero-tag i{color:var(--brand)}

/* ============ Group A ============ */
.groupA{display:grid;grid-template-columns:1fr 2fr;gap:48px;align-items:start}
.groupA h2{font-size:32px;margin:14px 0 14px}
.groupA-intro p{color:var(--text-2);font-size:15px}
.groupA-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature-card{background:var(--surface-1);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  transition:transform .16s ease,border-color .16s ease}
.feature-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.icon-box{width:48px;height:48px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px}
.icon-box.purple{background:var(--accent-soft);color:var(--accent-text)}
.feature-card h3{font-size:20px;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-2);line-height:1.8}
.card-point{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--text-3)}
.card-point i{color:var(--brand);margin-right:6px}

/* ============ Group B ============ */
.groupB-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start}
.mini-card{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  transition:transform .16s ease,border-color .16s ease}
.mini-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.mini-card .idx{font-size:13px;color:var(--text-3);letter-spacing:.12em}
.mini-card h3{font-size:20px;margin:14px 0 10px}
.mini-card p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ============ Scenes ============ */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:34px 0;border-top:1px solid var(--line)}
.scene:first-of-type{border-top:0}
.scene.flip .scene-media{order:2}
.scene-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:var(--surface-1)}
.scene-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.scene-num{font-size:32px;font-weight:800;color:var(--brand)}
.scene-body h3{font-size:28px;margin:12px 0 16px}
.scene-body p{font-size:15px;color:var(--text-2);margin-bottom:12px}
.scene-tags{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 20px}
.tag{font-size:12px;padding:5px 12px;border-radius:var(--r-pill);border:1px solid var(--line-strong);color:var(--text-2)}

/* ============ Cases ============ */
.case-strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface-1);overflow:hidden}
.case-strip div{padding:24px;border-right:1px solid var(--line)}
.case-strip div:last-child{border-right:0}
.case-strip b{display:block;font-size:32px;color:var(--brand);line-height:1.1}
.case-strip span{display:block;font-size:13px;color:var(--text-3);margin-top:6px}
.case-wrap{position:relative;margin-top:32px}
.case-scroller{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;
  scrollbar-width:none;-ms-overflow-style:none}
.case-scroller::-webkit-scrollbar{display:none}
.case-card{flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;background:var(--surface-1);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;transition:border-color .16s ease}
.case-card:hover{border-color:var(--line-strong)}
.case-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.case-body{padding:22px}
.case-body h4{font-size:20px;margin:12px 0 10px;line-height:1.4}
.case-body p{font-size:14px;color:var(--text-2);line-height:1.8}
.case-result{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--brand)}
.case-arrows{display:flex;gap:10px}
.arrow-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);background:transparent;
  color:var(--text);cursor:pointer;transition:all .16s ease}
.arrow-btn:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}

/* ============ Price ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{background:var(--surface-1);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;
  display:flex;flex-direction:column;position:relative;overflow:hidden}
.price-card.featured{background:var(--surface-2);border-color:var(--line-strong)}
.price-card.featured::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand)}
.plan-badge{position:absolute;top:20px;right:20px;background:var(--brand);color:#0E0F13;font-size:12px;
  font-weight:700;padding:5px 12px;border-radius:var(--r-pill)}
.price-card h3{font-size:22px}
.price-card .plan-note{font-size:13px;color:var(--text-3);margin-top:8px}
.price-amount{font-size:40px;font-weight:800;color:var(--brand);margin:22px 0 4px;line-height:1.1}
.price-amount small{font-size:15px;color:var(--text-2);font-weight:400;margin-left:6px}
.plan-list{margin:24px 0;display:flex;flex-direction:column;gap:12px;font-size:14px}
.plan-list li{display:flex;gap:10px;color:var(--text)}
.plan-list li::before{content:"·";color:var(--brand);font-weight:800}
.plan-list li.off{color:var(--text-3);text-decoration:line-through}
.price-card .btn-lime,.price-card .btn-ghost{margin-top:auto;justify-content:center}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);margin-top:32px}
table.compare{width:100%;border-collapse:collapse;min-width:640px;font-size:14px}
table.compare th,table.compare td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
table.compare thead th{background:var(--surface-2);color:var(--text);font-weight:700}
table.compare tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
table.compare td:first-child{color:var(--text-2)}
.scroll-hint{font-size:12px;color:var(--text-3);margin-top:10px}

/* ============ News (CMS) ============ */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-item{background:var(--surface-1);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color .16s ease}
.news-item:hover{border-color:var(--line-strong)}
.news-item:hover .news-title{color:var(--brand)}
.news-link{display:flex;flex-direction:column;height:100%;color:inherit}
.news-thumb{display:block;background-size:cover;background-position:center;background-color:var(--surface-2)}
.news-item .news-thumb{aspect-ratio:16/9}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3)}
.news-time{font-variant-numeric:tabular-nums}
.news-title{font-size:18px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .16s ease}
.news-sum{font-size:14px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-body .link-arrow{margin-top:auto}
.news-item--lead{grid-column:1 / -1}
.news-item--lead .news-link{display:grid;grid-template-columns:360px 1fr}
.news-item--lead .news-thumb{aspect-ratio:auto;height:100%;min-height:240px}
.news-item--lead .news-title{font-size:26px;-webkit-line-clamp:2}
.empty-state{background:var(--surface-1);border:1px dashed var(--line-strong);border-radius:var(--r-card);
  padding:56px 24px;text-align:center}
.empty-state i{font-size:28px;color:var(--text-3)}
.empty-state p{color:var(--text-2);margin:14px 0 20px;font-size:15px}

/* ============ FAQ ============ */
.faq{max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;background:transparent;border:0;padding:22px 0;display:flex;align-items:center;justify-content:space-between;
  gap:20px;font-size:16px;font-weight:600;text-align:left;cursor:pointer;color:var(--text);position:relative}
.faq-q::before{content:"";position:absolute;left:-16px;top:20px;bottom:20px;width:3px;border-radius:2px;background:transparent;transition:background .18s ease}
.faq-item.open .faq-q::before{background:var(--brand)}
.faq-q i{color:var(--brand);transition:transform .18s ease;font-size:14px}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{display:none;padding:0 0 20px;font-size:15px;line-height:1.9;color:var(--text-2);max-width:820px}
.faq-item.open .faq-a{display:block}

/* ============ CTA form ============ */
.cta-section{background:var(--surface-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-grid h2{font-size:40px;margin:14px 0 16px}
.cta-grid p.lead{color:var(--text-2);font-size:15px}
.contact-list{margin-top:28px;display:flex;flex-direction:column;gap:16px}
.contact-list li{display:flex;gap:12px;font-size:14px;color:var(--text-2)}
.contact-list i{color:var(--brand);margin-top:5px;width:18px;text-align:center}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;background:var(--surface-2);border:1px solid var(--line);
  border-radius:var(--r-card);padding:32px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--text-3)}
.field label .req{color:var(--alert);margin-left:4px}
.form-input{height:44px;background:#12141A;border:1px solid var(--line);border-radius:var(--r-input);padding:0 14px;
  font-size:14px;color:var(--text);transition:all .16s ease;width:100%}
textarea.form-input{height:auto;padding:12px 14px;resize:vertical;min-height:110px}
.form-input::placeholder{color:var(--text-3)}
.form-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(184,242,75,.15);outline:none}
.form-input.err{border-color:var(--alert)}
.form-tip{font-size:12px;color:var(--text-3)}
.form-grid .btn-lime{justify-content:center}

/* ============ Footer ============ */
.site-footer{background:var(--foot);border-top:1px solid var(--line);margin-top:auto}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.foot-grid h4{font-size:14px;color:var(--text-3);letter-spacing:.1em;margin-bottom:18px;font-weight:700}
.foot-brand .brand-text{font-size:17px;margin-bottom:14px}
.foot-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px}
.foot-links{display:flex;flex-direction:column;gap:12px}
.foot-links a{font-size:14px;color:var(--text-2)}
.foot-links a:hover{color:var(--brand);text-decoration:underline}
.foot-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:12px;color:var(--text-3)}

/* ============ Responsive ============ */
@media (max-width:1199px){
  .hero h1{font-size:46px}
  .groupB-grid{grid-template-columns:repeat(3,1fr)}
  .case-card{flex:0 0 calc((100% - 24px)/2)}
}
@media (max-width:991px){
  .app-side{width:76px}
  .brand{padding:0;justify-content:center}
  .brand-text,.side-cta{display:none}
  .side-nav{padding:16px 10px}
  .nav-item{justify-content:center;padding:12px}
  .nav-item .nav-label{display:none}
  .nav-item:hover .nav-label{display:block;position:absolute;left:66px;white-space:nowrap;background:var(--surface-2);
    border:1px solid var(--line-strong);border-radius:8px;padding:6px 12px;font-size:13px;color:var(--text);z-index:20}
  .nav-item.active::before{top:10px;bottom:10px}
  .app-main{margin-left:76px}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:-1;aspect-ratio:16/9}
  .hero h1{font-size:38px}
  .hero-sub{max-width:100%}
  .groupA{grid-template-columns:1fr;gap:28px}
  .scene{grid-template-columns:1fr;gap:24px;padding:28px 0}
  .scene.flip .scene-media{order:0}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
  .section-head h2{font-size:30px}
  .price-grid{grid-template-columns:1fr}
  .news-list{grid-template-columns:repeat(2,1fr)}
  .news-item--lead .news-link{grid-template-columns:1fr}
}
@media (max-width:767px){
  .app-side{display:none}
  .app-main{margin-left:0;padding-top:56px}
  .topbar{display:flex}
  .shell{padding:0 16px}
  .section{padding:56px 0}
  .hero{padding:40px 0 48px}
  .hero h1{font-size:34px}
  .hero-actions{gap:12px}
  .hero-actions .btn-lime,.hero-actions .btn-ghost{flex:1;justify-content:center;padding:0 16px}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:16px}
  .stat b{font-size:26px}
  .section-head h2,.cta-grid h2{font-size:26px}
  .groupA h2{font-size:26px}
  .groupA-cards{grid-template-columns:1fr}
  .groupB-grid{grid-template-columns:1fr}
  .scene-body h3{font-size:21px}
  .case-strip{grid-template-columns:1fr 1fr}
  .case-strip div{border-bottom:1px solid var(--line)}
  .case-strip div:nth-child(2n){border-right:0}
  .case-card{flex:0 0 86%}
  .case-arrows{display:none}
  .news-list{grid-template-columns:1fr}
  .news-item--lead .news-thumb{min-height:200px}
  .news-item--lead .news-title{font-size:21px}
  .price-card{padding:24px}
  .form-grid{grid-template-columns:1fr;padding:22px}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
  h1,h2,h3,h4{letter-spacing:0}
}

/* roulang page: article */
:root{
  --bg:#0E0F13;
  --surface-1:#16181F;
  --surface-2:#1E2129;
  --line:#242833;
  --line-strong:#3A4150;
  --brand:#B8F24B;
  --brand-soft:rgba(184,242,75,.12);
  --accent:#7A5CFF;
  --accent-soft:rgba(122,92,255,.16);
  --alert:#FF6A2B;
  --text:#EDEFF4;
  --text-2:#9BA1B0;
  --text-3:#6C7280;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-block:20px;
  --sidebar-w:248px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --bs-primary:#B8F24B;
  --bs-body-bg:#0E0F13;
  --bs-body-color:#EDEFF4;
  --bs-border-color:#242833;
  --bs-border-radius:10px;
  --bs-link-color:#B8F24B;
  --bs-link-hover-color:#CDFF6B;
  --bs-font-sans-serif:var(--font);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
  font-size:16px;line-height:1.9;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;letter-spacing:0}
h2{font-size:40px;line-height:1.2}
h3{font-size:28px;line-height:1.3;font-weight:700}
h4{font-size:20px;line-height:1.4;font-weight:700}
p{margin:0}
::selection{background:var(--brand);color:#0E0F13}
:focus-visible{outline:1px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 3px rgba(184,242,75,.18)}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:#12141A;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
}
.brand{
  display:flex;align-items:center;gap:12px;height:72px;padding:0 20px;
  border-bottom:1px solid var(--line);flex:0 0 auto;
}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--brand);color:#0E0F13;
  font-weight:800;font-size:14px;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{font-size:16px;font-weight:800;line-height:1.2;color:var(--text)}
.brand-text em{display:block;font-style:normal;font-size:10px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-top:2px}
.side-nav{display:flex;flex-direction:column;gap:4px;padding:18px 14px;overflow-y:auto;flex:1 1 auto}
.nav-item{
  display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);position:relative;
  transition:background .16s ease,color .16s ease;
}
.nav-item i{width:20px;text-align:center;font-size:16px;color:inherit}
.nav-item:hover{background:rgba(255,255,255,.04);color:var(--text)}
.nav-item.active{background:var(--brand-soft);color:var(--brand)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;background:var(--brand);border-radius:2px;
}
.side-card{
  margin:14px;padding:16px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface-1);
}
.side-card p{font-size:13px;line-height:1.7;color:var(--text-2);margin-bottom:12px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.55);opacity:0;visibility:hidden;
  transition:opacity .18s ease;z-index:55;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ---------- 顶部栏（移动端） ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:58;
  background:#12141A;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar .brand{height:56px;padding:0;border:0}
.hamburger{
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:var(--text);
}
.hamburger:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- 主区域 ---------- */
.app-main{margin-left:var(--sidebar-w);min-height:100vh}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;transition:all .16s ease;border:1px solid transparent;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#0E0F13}
.btn-primary:hover{background:#CDFF6B;box-shadow:0 6px 18px rgba(184,242,75,.25);color:#0E0F13}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.btn-block{width:100%;height:40px;font-size:14px}
.link-arrow{color:var(--brand);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-arrow i{transition:transform .16s ease}
.link-arrow:hover{text-decoration:underline}
.link-arrow:hover i{transform:translateX(2px)}

/* ---------- 文章头部 ---------- */
.article-head{
  position:relative;padding:36px 0 44px;border-bottom:1px solid var(--line);
  background:#101218;overflow:hidden;
}
.article-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(184,242,75,.05) 0 1px,transparent 1px 14px);
  opacity:.7;
}
.article-head .shell{position:relative;z-index:1}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb-nav a{transition:color .16s ease}
.breadcrumb-nav a:hover{color:var(--brand)}
.breadcrumb-nav .sep{color:var(--line-strong)}
.breadcrumb-nav .current{color:var(--text-2);max-width:44ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-size:40px;line-height:1.3;font-weight:800;margin-bottom:20px;max-width:920px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:13px;color:var(--text-3)}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums}
.meta-sep{width:1px;height:12px;background:var(--line-strong)}
.badge{
  display:inline-flex;align-items:center;border-radius:999px;font-size:12px;
  padding:4px 10px;line-height:1.6;font-weight:600;
}
.badge-cat{background:var(--accent-soft);color:#A995FF}
.badge-tag{background:var(--brand-soft);color:var(--brand);border:1px solid rgba(184,242,75,.3)}
.badge-tag:hover{border-color:var(--brand);background:rgba(184,242,75,.18)}

/* ---------- 正文 ---------- */
.article-wrap{padding:48px 0 56px}
.article-body{max-width:768px;margin:0 auto;color:var(--text-2)}
.article-body>*:first-child{margin-top:0}
.article-body p{font-size:16px;line-height:1.9;margin:0 0 1.1em;color:var(--text-2)}
.article-body h2{
  font-size:22px;font-weight:700;line-height:1.5;color:var(--text);
  margin:40px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.42em;width:3px;height:18px;
  background:var(--brand);border-radius:2px;
}
.article-body h3{font-size:18px;font-weight:600;color:var(--text);margin:28px 0 12px}
.article-body h4{font-size:16px;font-weight:700;color:var(--text);margin:22px 0 10px}
.article-body a{color:var(--brand);border-bottom:1px dashed rgba(184,242,75,.45)}
.article-body a:hover{background:var(--brand-soft)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px;line-height:1.9}
.article-body li{margin-bottom:.4em}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--surface-1);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;display:block;overflow-x:auto;
}
.article-body thead th{background:var(--surface-2);color:var(--text);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-top:1px solid var(--line);border-right:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body code{
  font-family:var(--mono);font-size:14px;background:#12141A;
  border:1px solid var(--line);border-radius:6px;padding:2px 6px;color:var(--brand);
}
.article-body pre{
  background:#12141A;border:1px solid var(--line);border-radius:10px;
  padding:16px 18px;overflow-x:auto;margin:24px 0;
}
.article-body pre code{background:none;border:0;padding:0;color:var(--text-2);font-size:13.5px;line-height:1.8}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.summary-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface-1);
  padding:20px 22px;margin-bottom:32px;
}
.summary-card h4{font-size:16px;margin-bottom:10px;color:var(--text)}
.summary-card ul{margin:0;padding-left:20px;color:var(--text-2);font-size:15px;line-height:1.9}

.empty-state{
  max-width:768px;margin:0 auto;text-align:center;padding:56px 24px;
  border:1px solid var(--line);border-radius:var(--radius-block);background:var(--surface-1);
}
.empty-state i{font-size:28px;color:var(--text-3);margin-bottom:16px;display:block}
.empty-state p{color:var(--text-2);margin-bottom:22px}

/* ---------- 标签 / 翻页 ---------- */
.tag-row{max-width:768px;margin:0 auto;padding-top:32px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .tag-label{font-size:13px;color:var(--text-3);margin-right:4px}
.pager{max-width:768px;margin:32px auto 0;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pager-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface-1);
  padding:18px 20px;transition:border-color .16s ease,transform .16s ease;display:block;
}
.pager-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.pager-card .pager-dir{font-size:12px;color:var(--text-3);display:block;margin-bottom:8px;letter-spacing:.06em}
.pager-card h4{font-size:16px;font-weight:700;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pager-card:hover h4{color:var(--brand)}
.pager-card.right{text-align:right}
.back-row{max-width:768px;margin:28px auto 0;text-align:center}

/* ---------- 相关推荐 ---------- */
.related{padding:64px 0;border-top:1px solid var(--line);background:#101218}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:28px}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:block;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  background:var(--surface-1);transition:border-color .16s ease,transform .16s ease;
}
.rel-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.rel-card:hover h4{color:var(--brand)}
.rel-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--surface-2)}
.rel-body{padding:18px 20px 20px}
.rel-body h4{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-time{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;padding:64px 0;background:var(--bg);
}
.cta-inner{
  border:1px solid var(--line);border-radius:var(--radius-block);background:var(--surface-1);
  padding:40px;display:grid;grid-template-columns:1.5fr auto;gap:32px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;left:-120px;top:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(184,242,75,.14),transparent 68%);
}
.cta-inner>*{position:relative;z-index:1}
.cta-inner h2{font-size:30px;margin-bottom:12px}
.cta-inner p{font-size:15px;color:var(--text-2);max-width:60ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-left:var(--sidebar-w);background:#0A0B0E;border-top:1px solid var(--line);
  padding:64px 0 24px;
}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}
.foot-brand .brand-text{font-size:18px;font-weight:800;color:var(--text)}
.foot-brand .brand-text span{display:block;font-size:10px;letter-spacing:.18em;color:var(--text-3);margin-top:4px;font-weight:600}
.foot-brand p{font-size:14px;color:var(--text-2);margin-top:16px;max-width:42ch;line-height:1.8}
.foot-grid h4{
  font-size:13px;color:var(--text-3);letter-spacing:.1em;text-transform:uppercase;
  font-weight:600;margin-bottom:16px;
}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14px;color:var(--text-2);transition:color .16s ease}
.foot-links a:hover{color:var(--brand);text-decoration:underline}
.foot-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:44px;padding-top:20px;
  font-size:12px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  :root{--sidebar-w:76px}
  .sidebar{width:76px}
  .brand{padding:0 0 0 19px}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:12px}
  .nav-item span,.nav-label{display:none}
  .side-card{display:none}
  .site-footer{margin-left:76px}
  .cta-inner{grid-template-columns:1fr;padding:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px 24px}
  .article-title{font-size:32px}
  h2{font-size:30px}
}
@media (max-width:767.98px){
  .sidebar{
    width:82vw;max-width:320px;
    transform:translateX(-100%);transition:transform .2s ease;
  }
  .sidebar.open{transform:translateX(0)}
  .brand{padding:0 20px}
  .brand-text{display:block}
  .nav-item{justify-content:flex-start;padding:12px 14px}
  .nav-item span,.nav-label{display:inline}
  .side-card{display:block}
  .topbar{display:flex}
  .app-main{margin-left:0;padding-top:56px}
  .site-footer{margin-left:0}
  .shell{padding:0 16px}
  .article-head{padding:24px 0 32px}
  .article-title{font-size:26px;line-height:1.3}
  .article-wrap{padding:32px 0 40px}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .pager{grid-template-columns:1fr}
  .pager-card.right{text-align:left}
  .related{padding:44px 0}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:44px 0}
  .cta-inner{padding:24px}
  .cta-inner h2{font-size:22px}
  .btn{height:42px;padding:0 18px;font-size:14px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;gap:8px}
}
@media (max-width:575.98px){
  .article-title{font-size:24px}
  .meta-row{gap:8px 12px}
  .meta-sep{display:none}
}

/* roulang page: category1 */
:root{
  --bg:#0E0F13;
  --surface-1:#16181F;
  --surface-2:#1E2129;
  --line:#242833;
  --line-strong:#3A4150;
  --brand:#B8F24B;
  --brand-soft:rgba(184,242,75,.12);
  --accent:#7A5CFF;
  --accent-soft:rgba(122,92,255,.16);
  --alert:#FF6A2B;
  --text:#EDEFF4;
  --text-2:#9BA1B0;
  --text-3:#6C7280;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-block:20px;
  --shadow-brand:0 6px 18px rgba(184,242,75,.25);
  --t:160ms ease;
  --bs-primary:#B8F24B;
  --bs-body-bg:#0E0F13;
  --bs-body-color:#EDEFF4;
  --bs-border-color:#242833;
  --bs-border-radius:14px;
  --bs-link-color:#B8F24B;
  --bs-link-hover-color:#CDFF6B;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t)}
a:hover{color:#CDFF6B}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--text)}
h1{font-size:56px;line-height:1.15;font-weight:800}
h2{font-size:40px;line-height:1.2;font-weight:800}
h3{font-size:28px;line-height:1.3;font-weight:700}
h4{font-size:20px;line-height:1.4;font-weight:700}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:1px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 3px rgba(184,242,75,.15)}
::selection{background:var(--brand);color:var(--bg)}

/* ============ App Shell ============ */
.side-nav{
  position:fixed;top:0;left:0;width:248px;height:100vh;
  background:#12141A;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;overflow-y:auto;
}
.logo-block{
  height:72px;display:flex;align-items:center;padding:0 20px;
  border-bottom:1px solid var(--line);flex:0 0 auto;
}
.brand-mark{
  display:inline-flex;align-items:baseline;gap:4px;
  font-size:19px;font-weight:800;color:var(--text);letter-spacing:.2px;
}
.brand-mark .pg{color:var(--brand)}
.brand-mark span{font-size:17px;color:var(--text)}
.brand-mark:hover{color:var(--text)}
.side-nav-inner{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto}
.nav-item{
  display:flex;align-items:center;gap:12px;
  padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);position:relative;
  transition:background-color var(--t),color var(--t);
}
.nav-item i{width:20px;font-size:16px;text-align:center;flex:0 0 20px}
.nav-item:hover{background:rgba(255,255,255,.04);color:var(--text)}
.nav-item.active{background:var(--brand-soft);color:var(--brand)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:999px;background:var(--brand);
}
.nav-cta{
  margin:12px;padding:16px;border:1px solid var(--line);
  border-radius:var(--radius-card);background:var(--surface-1);flex:0 0 auto;
}
.nav-cta p{font-size:13px;line-height:1.7;color:var(--text-2);margin-bottom:12px}
.nav-cta a{
  display:inline-flex;align-items:center;justify-content:center;
  width:100%;height:38px;border-radius:var(--radius-btn);
  background:var(--brand);color:var(--bg);font-size:14px;font-weight:600;
}
.nav-cta a:hover{background:#CDFF6B;color:var(--bg)}

.top-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:1050;
  background:#12141A;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.top-bar .brand-mark{font-size:17px}
.burger{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--text);font-size:16px;
}
.burger:hover{border-color:var(--line-strong);color:var(--brand)}
.nav-mask{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:1035;
}
.nav-mask.show{display:block}

.main-area{margin-left:248px;min-height:100vh}
.shell{max-width:1240px;margin:0 auto;padding:0 24px}

/* ============ 通用组件 ============ */
.badge-pill{
  display:inline-block;border-radius:999px;font-size:12px;line-height:1.6;
  padding:4px 10px;white-space:nowrap;
}
.badge-cat{background:var(--accent-soft);color:#A995FF}
.badge-state{background:var(--brand-soft);color:var(--brand)}
.badge-alert{background:rgba(255,106,43,.16);color:var(--alert)}

.btn-main{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--radius-btn);background:var(--brand);color:var(--bg);
  font-size:15px;font-weight:600;border:1px solid var(--brand);
  transition:background-color var(--t),box-shadow var(--t),color var(--t);
}
.btn-main:hover{background:#CDFF6B;color:var(--bg);border-color:#CDFF6B;box-shadow:var(--shadow-brand)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--radius-btn);background:transparent;color:var(--text);
  border:1px solid var(--line-strong);font-size:15px;font-weight:600;
  transition:background-color var(--t),border-color var(--t),color var(--t);
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
}
.link-arrow i{transition:transform var(--t)}
.link-arrow:hover{text-decoration:underline}
.link-arrow:hover i{transform:translateX(2px)}

.card{
  background:var(--surface-1);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
  transition:border-color var(--t),transform var(--t);
}
.card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.img-frame{
  border-radius:var(--radius-img);overflow:hidden;background:var(--surface-2);
  border:1px solid var(--line);position:relative;
}
.img-frame img{width:100%;height:100%;object-fit:cover}

.section{padding:96px 0}
.section-tight{padding:64px 0}
.sec-head{margin-bottom:40px;max-width:760px}
.sec-head h2{margin-bottom:14px}
.sec-head p{font-size:16px;color:var(--text-2);line-height:1.9}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;
  color:var(--brand);letter-spacing:.08em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand)}

/* ============ 页头 ============ */
.page-hero{
  position:relative;padding:56px 0 72px;
  border-bottom:1px solid var(--line);overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.page-hero > .shell{position:relative;z-index:2}
.crumb{font-size:13px;color:var(--text-3);margin-bottom:24px}
.crumb a{color:var(--brand)}
.crumb span{margin:0 8px;color:var(--text-3)}
.crumb .current{color:var(--text-2)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-grid h1{margin-bottom:18px}
.hero-lead{font-size:17px;line-height:1.9;color:var(--text-2);max-width:620px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-visual{
  border-radius:var(--radius-block);overflow:hidden;position:relative;
  border:1px solid var(--line);aspect-ratio:4/3;background:var(--surface-2);
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(120deg,rgba(184,242,75,.22) 0%,rgba(184,242,75,0) 46%);
}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin-top:44px;padding-top:32px;border-top:1px solid var(--line);
}
.hero-stats .num{font-size:32px;font-weight:800;color:var(--brand);line-height:1.2}
.hero-stats .lbl{font-size:13px;color:var(--text-3);margin-top:4px}

/* ============ 产品宫格 ============ */
.prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.prod-card{
  background:var(--surface-1);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  display:flex;flex-direction:column;
  transition:border-color var(--t),transform var(--t);
}
.prod-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.prod-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);border-bottom:1px solid var(--line)}
.prod-card .thumb img{width:100%;height:100%;object-fit:cover}
.prod-card .body{padding:28px 28px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.prod-card .body h3{font-size:22px;margin-bottom:10px}
.prod-card .body > p{font-size:15px;color:var(--text-2);line-height:1.85;margin-bottom:18px}
.spec-list{border-top:1px solid var(--line);padding-top:16px;margin-bottom:20px;display:flex;flex-direction:column;gap:8px}
.spec-list li{
  display:flex;justify-content:space-between;gap:16px;font-size:14px;color:var(--text-2);
}
.spec-list li b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums}
.prod-card .foot{margin-top:auto}

/* ============ 参数对照表 ============ */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface-1);
}
table.spec-table{width:100%;min-width:860px;border-collapse:collapse;font-size:14px}
table.spec-table th,table.spec-table td{
  padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);
  white-space:nowrap;font-variant-numeric:tabular-nums;
}
table.spec-table thead th{
  background:var(--surface-2);color:var(--text-2);font-weight:600;font-size:13px;
  letter-spacing:.04em;border-bottom:1px solid var(--line-strong);
}
table.spec-table tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
table.spec-table tbody tr:last-child td{border-bottom:0}
table.spec-table td:first-child{color:var(--text);font-weight:600}
table.spec-table td{color:var(--text-2)}
.scroll-hint{font-size:12px;color:var(--text-3);margin-top:10px;display:none}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  background:var(--surface-1);border:1px solid var(--line);
  border-top:3px solid var(--accent);border-radius:var(--radius-card);
  padding:28px 24px;transition:border-color var(--t),transform var(--t);
}
.scene-card:hover{transform:translateY(-3px);border-color:var(--line-strong);border-top-color:var(--brand)}
.scene-card .idx{font-size:13px;color:var(--brand);font-variant-numeric:tabular-nums;margin-bottom:12px;display:block}
.scene-card h3{font-size:19px;margin-bottom:10px}
.scene-card p{font-size:14px;line-height:1.85;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px}
.faq-acc .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;
}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--line)}
.faq-acc .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  padding:20px 44px 20px 0;border:0;box-shadow:none;position:relative;
  line-height:1.7;text-align:left;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none}
.faq-acc .accordion-button::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;
  border-radius:999px;background:var(--brand);opacity:0;transition:opacity var(--t);
}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1}
.faq-acc .accordion-button::after{
  content:"+";font-family:inherit;font-size:20px;font-weight:400;color:var(--brand);
  background-image:none;width:auto;height:auto;transform:none;
  position:absolute;right:8px;top:50%;margin-top:-16px;line-height:32px;
  transition:transform 180ms ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg)}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-acc .accordion-body{
  padding:0 44px 20px 0;font-size:15px;line-height:1.9;color:var(--text-2);
}

/* ============ CTA + 表单 ============ */
.cta-block{
  background:var(--surface-1);border:1px solid var(--line);
  border-radius:var(--radius-block);padding:48px;
  display:grid;grid-template-columns:6fr 6fr;gap:48px;
}
.cta-block h2{font-size:32px;margin-bottom:14px}
.cta-block .lead{font-size:15px;color:var(--text-2);line-height:1.9;margin-bottom:28px}
.contact-list{display:flex;flex-direction:column;gap:14px}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.contact-list i{color:var(--brand);width:20px;text-align:center;margin-top:5px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px}
.field label .req{color:var(--alert)}
.field input,.field select,.field textarea{
  width:100%;background:#12141A;border:1px solid var(--line);color:var(--text);
  border-radius:var(--radius-btn);font-size:15px;font-family:inherit;
  padding:0 14px;height:44px;transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(184,242,75,.15);color:var(--text);
}
.field .err{font-size:12px;color:var(--alert);margin-top:6px;display:none}
.form-note{font-size:12px;color:var(--text-3);margin-top:12px}

/* ============ 页脚 ============ */
.site-footer{background:#0A0B0E;border-top:1px solid var(--line);padding:64px 0 32px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.foot-brand .brand-text{font-size:18px;font-weight:800;color:var(--text);margin-bottom:12px}
.foot-brand .brand-text span{display:block;font-size:12px;color:var(--text-3);letter-spacing:.14em;margin-top:4px;font-weight:500}
.foot-brand p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px}
.site-footer h4{
  font-size:14px;color:var(--text-3);font-weight:600;letter-spacing:.08em;
  margin-bottom:16px;text-transform:none;
}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14px;color:var(--text-2)}
.foot-links a:hover{color:var(--brand);text-decoration:underline}
.foot-bottom{
  border-top:1px solid var(--line);padding-top:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  h1{font-size:44px}
  h2{font-size:34px}
  .cta-block{padding:36px;gap:32px}
  .hero-grid{gap:32px}
}
@media (max-width:991.98px){
  .side-nav{width:76px}
  .side-nav .nav-label{display:none}
  .logo-block{padding:0;justify-content:center}
  .brand-mark{font-size:15px}
  .brand-mark span{display:none}
  .side-nav-inner{padding:16px 12px}
  .nav-item{justify-content:center;padding:12px 0}
  .nav-item:hover .nav-label{
    display:block;position:absolute;left:66px;top:50%;transform:translateY(-50%);
    background:var(--surface-2);border:1px solid var(--line-strong);
    padding:6px 12px;border-radius:8px;font-size:13px;color:var(--text);
    white-space:nowrap;z-index:5;
  }
  .nav-cta{display:none}
  .main-area{margin-left:76px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:-1}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .prod-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-block{grid-template-columns:1fr}
}
@media (max-width:767.98px){
  h1{font-size:34px}
  h2{font-size:26px}
  h3{font-size:21px}
  h4{font-size:17px}
  .top-bar{display:flex}
  .side-nav{
    width:min(82vw,320px);transform:translateX(-100%);
    transition:transform 220ms ease;top:0;z-index:1045;
  }
  .side-nav.open{transform:translateX(0)}
  .side-nav .nav-label{display:inline}
  .logo-block{height:72px;padding:0 20px;justify-content:flex-start}
  .brand-mark{font-size:18px}
  .brand-mark span{display:inline;font-size:16px}
  .side-nav-inner{padding:16px 12px}
  .nav-item{justify-content:flex-start;padding:12px 14px;min-height:44px}
  .nav-item:hover .nav-label{display:none}
  .nav-cta{display:block}
  .main-area{margin-left:0;padding-top:56px}
  .shell{padding:0 16px}
  .section{padding:56px 0}
  .section-tight{padding:40px 0}
  .page-hero{padding:32px 0 48px}
  .hero-stats{margin-top:32px;padding-top:24px;gap:20px}
  .hero-stats .num{font-size:26px}
  .prod-card .body{padding:22px 20px 20px}
  .scene-grid{grid-template-columns:1fr}
  .cta-block{padding:24px}
  .cta-block h2{font-size:24px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-brand p{max-width:none}
  .scroll-hint{display:block}
  .faq-acc .accordion-body{padding-right:16px}
}

/* roulang page: category2 */
:root{
  --bg:#0E0F13;
  --surface-1:#16181F;
  --surface-2:#1E2129;
  --panel:#12141A;
  --line:#242833;
  --line-strong:#3A4150;
  --brand:#B8F24B;
  --brand-soft:rgba(184,242,75,0.12);
  --accent:#7A5CFF;
  --accent-soft:rgba(122,92,255,0.16);
  --alert:#FF6A2B;
  --text:#EDEFF4;
  --text-2:#9BA1B0;
  --text-3:#6C7280;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-block:20px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;

  --bs-primary:#B8F24B;
  --bs-primary-rgb:184,242,75;
  --bs-body-bg:#0E0F13;
  --bs-body-color:#EDEFF4;
  --bs-border-color:#242833;
  --bs-border-radius:10px;
  --bs-link-color:#B8F24B;
  --bs-link-hover-color:#CDFF6B;
  --bs-font-sans-serif:var(--font);
  --bs-body-font-family:var(--font);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:0}
h1{font-size:56px;line-height:1.15}
h2{font-size:40px;line-height:1.2}
h3{font-size:28px;line-height:1.3;font-weight:700}
h4{font-size:20px;line-height:1.4;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}

.container{width:100%;max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}
@media (min-width:1200px){.container{max-width:1240px}}

/* ---------- App Shell ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;width:248px;height:100vh;
  background:var(--panel);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:0 14px 18px;z-index:1040;
}
.brand{height:72px;display:flex;align-items:center;gap:10px;padding-left:6px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:var(--brand-soft);border:1px solid rgba(184,242,75,.42);
  color:var(--brand);display:grid;place-items:center;
  font-size:12px;font-weight:800;letter-spacing:.5px;
}
.brand-text{font-size:16px;font-weight:800;line-height:1.2;display:flex;flex-direction:column;color:var(--text)}
.brand-text em{font-style:normal;font-size:10px;letter-spacing:2px;color:var(--brand);font-weight:600;margin-top:3px}
.side-nav{display:flex;flex-direction:column;gap:4px;overflow-y:auto;flex:1 1 auto;padding:8px 0}
.nav-item{
  display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;position:relative;
  transition:background .16s ease,color .16s ease;
}
.nav-item i{font-size:15px;width:20px;text-align:center;flex:0 0 auto}
.nav-item:hover{background:rgba(255,255,255,.04);color:var(--text)}
.nav-item.active{background:var(--brand-soft);color:var(--brand)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:999px;background:var(--brand);
}
.side-cta{
  background:var(--surface-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;flex:0 0 auto;
}
.side-cta strong{display:block;font-size:14px;font-weight:700;margin-bottom:6px}
.side-cta p{font-size:12px;color:var(--text-2);line-height:1.7;margin-bottom:12px}
.side-cta a{
  display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;
  border-radius:8px;background:var(--brand);color:var(--bg);font-size:13px;font-weight:600;
  transition:background .16s ease,box-shadow .16s ease;
}
.side-cta a:hover{background:#CDFF6B;box-shadow:0 6px 18px rgba(184,242,75,.25)}

.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--panel);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;z-index:1060;
}
.topbar .brand{height:56px;padding-left:0}
.topbar-toggle{
  width:40px;height:40px;border-radius:10px;background:transparent;
  border:1px solid var(--line);color:var(--text);
  display:grid;place-items:center;font-size:16px;cursor:pointer;
  transition:border-color .16s ease,color .16s ease;
}
.topbar-toggle:hover{border-color:var(--brand);color:var(--brand)}
.scrim{
  position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:1070;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.scrim.show{opacity:1;visibility:visible}

.site-main{margin-left:248px}
.site-footer{margin-left:248px}

/* ---------- 通用组件 ---------- */
.btn-main{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--r-btn);background:var(--brand);color:var(--bg);
  border:1px solid var(--brand);font-size:15px;font-weight:600;
  transition:background .16s ease,box-shadow .16s ease,transform .16s ease;
}
.btn-main:hover{background:#CDFF6B;color:var(--bg);box-shadow:0 6px 18px rgba(184,242,75,.25);transform:translateY(-1px)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--r-btn);background:transparent;color:var(--text);
  border:1px solid var(--line-strong);font-size:15px;font-weight:600;
  transition:background .16s ease,border-color .16s ease,color .16s ease;
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.btn-main:focus-visible,.btn-ghost:focus-visible,.link-more:focus-visible,.nav-item:focus-visible{
  outline:1px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 3px rgba(184,242,75,.15);
}
.link-more{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand);
  font-size:14px;font-weight:600;transition:gap .16s ease;
}
.link-more:hover{text-decoration:underline}
.link-more:hover i{transform:translateX(2px)}
.link-more i{transition:transform .16s ease}
.badge-tag{
  display:inline-block;border-radius:999px;padding:4px 10px;font-size:12px;
  background:var(--accent-soft);color:#A995FF;line-height:1.6;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);letter-spacing:1px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand)}

.section{padding:96px 0}
.section-sub{color:var(--text-2);font-size:16px;margin-top:16px;max-width:620px}
.section-head{max-width:720px}

/* ---------- 页头 ---------- */
.page-hero{position:relative;padding:48px 0 88px;border-bottom:1px solid var(--line);overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.18;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,15,19,.72) 0%,rgba(14,15,19,.94) 62%,var(--bg) 100%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:32px}
.crumbs a{color:var(--text-3);transition:color .16s ease}
.crumbs a:hover{color:var(--brand)}
.crumbs span{color:var(--text-2)}
.hero-lead{font-size:17px;color:var(--text-2);line-height:1.85;margin-top:20px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-figure{margin:0;position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-block);
  border:1px solid var(--line-strong);
}
.hero-figure figcaption{font-size:13px;color:var(--text-3);margin-top:12px}

/* ---------- 分层架构 ---------- */
.layers{display:flex;flex-direction:column;gap:14px;margin-top:40px}
.layer{
  position:relative;width:100%;background:var(--surface-1);
  border:1px solid var(--line);border-left:3px solid var(--brand);
  border-radius:var(--r-card);padding:20px 24px;
  display:flex;gap:24px;align-items:flex-start;
  transition:border-color .16s ease,transform .16s ease;
}
.layer:nth-child(1){width:62%}
.layer:nth-child(2){width:76%}
.layer:nth-child(3){width:89%}
.layer:nth-child(4){width:100%}
.layer:hover{border-color:var(--line-strong);border-left-color:var(--brand);transform:translateY(-3px)}
.layer-head{flex:0 0 168px}
.layer-head .layer-idx{
  display:block;font-size:12px;font-weight:700;color:var(--brand);
  letter-spacing:1.5px;margin-bottom:6px;font-variant-numeric:tabular-nums;
}
.layer-head h3{font-size:18px;font-weight:700;line-height:1.4}
.layer p{font-size:14px;color:var(--text-2);line-height:1.8}
.layer .layer-meta{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;
}
.layer .layer-meta b{
  font-weight:600;font-size:12px;color:var(--text-2);
  border:1px solid var(--line-strong);border-radius:999px;padding:3px 10px;
}

/* ---------- 特性清单 ---------- */
.feature-list{margin-top:24px;border-top:1px solid var(--line)}
.feature-list li{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}
.feature-icon{
  width:38px;height:38px;border-radius:10px;flex:0 0 auto;
  background:var(--accent-soft);color:#A995FF;display:grid;place-items:center;font-size:15px;
}
.feature-list h3{font-size:16px;font-weight:700;margin-bottom:4px;line-height:1.5}
.feature-list p{font-size:14px;color:var(--text-2);line-height:1.75}

/* ---------- 时间线 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}
.timeline::before{content:"";position:absolute;top:17px;left:0;right:0;height:1px;background:var(--line)}
.tl-item{position:relative;padding-top:52px}
.tl-dot{
  position:absolute;top:4px;left:0;width:34px;height:34px;border-radius:999px;
  background:var(--panel);border:1px solid var(--brand);color:var(--brand);
  display:grid;place-items:center;font-size:12px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.tl-item h3{font-size:17px;font-weight:700;margin-bottom:8px;line-height:1.5}
.tl-item p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- 配置对照表 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);margin-top:40px}
.spec{width:100%;border-collapse:collapse;min-width:720px;font-size:14px}
.spec th{
  background:var(--surface-2);text-align:left;padding:14px 18px;font-weight:600;
  color:var(--text);border-bottom:1px solid var(--line);white-space:nowrap;
}
.spec td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--text-2);line-height:1.75}
.spec tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.spec tbody tr:last-child td{border-bottom:0}
.spec td:first-child{color:var(--text);font-weight:600;white-space:nowrap}
.table-hint{font-size:12px;color:var(--text-3);margin-top:12px}

/* ---------- FAQ ---------- */
.faq{margin-top:48px;border-top:1px solid var(--line)}
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  line-height:1.7;padding:24px 48px 24px 0;border-radius:0;box-shadow:none;
  position:relative;transition:color .16s ease;
}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none}
.faq .accordion-button:focus{box-shadow:none;outline:none}
.faq .accordion-button:focus-visible{outline:1px solid var(--brand);outline-offset:-3px}
.faq .accordion-button::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--brand);border-radius:999px;
  transition:height .18s ease;
}
.faq .accordion-button:not(.collapsed)::before{height:22px}
.faq .accordion-button::after{
  background-image:none;content:"+";position:absolute;right:4px;top:50%;
  transform:translateY(-50%);width:auto;height:auto;font-size:22px;font-weight:400;
  color:var(--text-2);line-height:1;transition:color .18s ease;
}
.faq .accordion-button:not(.collapsed)::after{content:"−";color:var(--brand)}
.faq .accordion-body{padding:0 48px 24px 0;font-size:15px;color:var(--text-2);line-height:1.9}

/* ---------- CTA 条 ---------- */
.cta-band{padding:0 0 96px}
.cta-inner{
  position:relative;overflow:hidden;background:var(--surface-1);
  border:1px solid var(--line);border-radius:var(--r-block);padding:44px;
  display:flex;gap:36px;align-items:center;justify-content:space-between;
}
.cta-inner::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--brand)}
.cta-inner h2{font-size:30px;line-height:1.3}
.cta-inner p{font-size:15px;color:var(--text-2);margin-top:12px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A0B0E;border-top:1px solid var(--line);padding:64px 0 0}
.shell{max-width:1240px;margin:0 auto;padding:0 24px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
.foot-brand .brand-text{font-size:18px}
.foot-brand .brand-text span{font-size:10px;letter-spacing:2px;color:var(--brand);font-weight:600;margin-top:5px}
.foot-brand p{font-size:14px;color:var(--text-2);line-height:1.85;margin-top:16px;max-width:340px}
.site-footer h4{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:1.5px;margin-bottom:18px}
.foot-links{display:flex;flex-direction:column;gap:11px}
.foot-links a{font-size:14px;color:var(--text-2);transition:color .16s ease}
.foot-links a:hover{color:var(--brand);text-decoration:underline}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;
  border-top:1px solid var(--line);padding:20px 0 28px;font-size:12px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  h1{font-size:46px}
  h2{font-size:34px}
}
@media (min-width:768px) and (max-width:991px){
  .app-sidebar{width:76px;padding:0 10px 16px}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:12px 0}
  .nav-item i{width:auto}
  .nav-label{display:none}
  .side-cta{display:none}
  .site-main,.site-footer{margin-left:76px}
  h1{font-size:38px}
  h2{font-size:28px}
  .layer-head{flex:0 0 140px}
  .timeline{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .timeline::before{display:none}
  .tl-item{padding-top:46px}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  body{font-size:16px}
  h1{font-size:34px}
  h2{font-size:26px}
  h3{font-size:21px}
  h4{font-size:17px}
  .app-sidebar{
    width:82vw;max-width:320px;transform:translateX(-104%);
    transition:transform .22s ease;padding:0 14px 18px;overflow-y:auto;
  }
  .app-sidebar.is-open{transform:none}
  .brand-text{display:flex}
  .nav-label{display:inline}
  .nav-item{min-height:44px}
  .topbar{display:flex}
  .site-main,.site-footer{margin-left:0}
  .site-main{padding-top:56px}
  .section{padding:56px 0}
  .page-hero{padding:28px 0 56px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;justify-content:center}
  .layer{width:100%!important;flex-direction:column;gap:10px;padding:18px}
  .layer-head{flex:0 0 auto}
  .timeline{grid-template-columns:1fr;gap:28px;margin-top:32px}
  .timeline::before{display:none}
  .tl-item{padding-top:42px}
  .faq .accordion-button{padding:20px 40px 20px 0;font-size:16px}
  .faq .accordion-body{padding:0 0 20px}
  .faq .accordion-button::before{left:-8px}
  .cta-band{padding:0 0 56px}
  .cta-inner{padding:28px;flex-direction:column;align-items:flex-start;gap:24px}
  .cta-inner h2{font-size:24px}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;justify-content:center}
  .foot-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px}
  .foot-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category3 */
:root{
  --bg:#0E0F13;
  --surface-1:#16181F;
  --surface-2:#1E2129;
  --line:#242833;
  --line-strong:#3A4150;
  --brand:#B8F24B;
  --brand-soft:rgba(184,242,75,.12);
  --accent:#7A5CFF;
  --alert:#FF6A2B;
  --text:#EDEFF4;
  --text-2:#9BA1B0;
  --text-3:#6C7280;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-box:20px;
  --side:248px;

  --bs-primary:#B8F24B;
  --bs-primary-rgb:184,242,75;
  --bs-body-bg:#0E0F13;
  --bs-body-color:#EDEFF4;
  --bs-border-color:#242833;
  --bs-border-radius:14px;
  --bs-link-color:#B8F24B;
  --bs-link-hover-color:#CDFF6B;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color 160ms ease;}
a:hover{color:#CDFF6B;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;letter-spacing:0;}
h1{font-size:56px;line-height:1.15;}
h2{font-size:40px;line-height:1.2;}
h3{font-size:28px;line-height:1.3;font-weight:700;}
h4{font-size:20px;line-height:1.4;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:1px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 3px rgba(184,242,75,.15);}
.num{font-variant-numeric:tabular-nums;}

/* ---------- App Shell ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);height:100vh;
  background:#12141A;border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:0 16px 20px;z-index:1040;
  transition:transform 200ms ease;
}
.brand{height:72px;display:flex;align-items:center;padding-left:20px;border-bottom:1px solid var(--line);margin-bottom:18px;}
.brand-text{font-size:17px;font-weight:800;color:var(--text);line-height:1.2;}
.brand-text span{display:block;font-size:11px;font-weight:600;color:var(--text-3);letter-spacing:2px;margin-top:2px;}
.brand-mini{display:none;font-size:15px;font-weight:800;color:var(--brand);}
.nav-list{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:10px 14px;border-radius:var(--r-btn);
  font-size:15px;color:var(--text-2);border-left:3px solid transparent;
  transition:background 160ms ease,color 160ms ease;
}
.nav-item i{width:20px;font-size:16px;text-align:center;color:inherit;}
.nav-item:hover{background:rgba(255,255,255,.04);color:var(--text);}
.nav-item.active{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);}
.side-cta{
  margin-top:auto;background:var(--surface-1);border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px;
}
.side-cta p{font-size:13px;line-height:1.7;color:var(--text-2);margin-bottom:12px;}
.side-cta .btn-main{height:38px;font-size:13px;padding:0 14px;width:100%;}

.main{margin-left:var(--side);min-height:100vh;}
.topbar{display:none;}

/* ---------- 容器 ---------- */
.shell{max-width:1240px;margin:0 auto;padding:0 24px;}
section{padding:96px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head .eyebrow{
  display:inline-block;font-size:12px;letter-spacing:2px;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:16px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--text-2);line-height:1.9;}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost,.btn-link-arrow{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;transition:all 160ms ease;cursor:pointer;}
.btn-main{
  height:44px;padding:0 22px;border-radius:var(--r-btn);background:var(--brand);
  color:var(--bg);border:1px solid var(--brand);font-size:15px;
}
.btn-main:hover{background:#CDFF6B;border-color:#CDFF6B;color:var(--bg);box-shadow:0 6px 18px rgba(184,242,75,.25);}
.btn-main:active{transform:translateY(1px);}
.btn-ghost{
  height:44px;padding:0 22px;border-radius:var(--r-btn);background:transparent;
  color:var(--text);border:1px solid var(--line-strong);font-size:15px;
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand);}
.btn-link-arrow{
  background:none;border:0;padding:0;color:var(--brand);font-size:14px;font-weight:600;
}
.btn-link-arrow i{transition:transform 160ms ease;}
.btn-link-arrow:hover i{transform:translateX(2px);}

/* ---------- 徽章 ---------- */
.badge-tag{
  display:inline-block;border-radius:999px;font-size:12px;padding:4px 10px;
  background:rgba(122,92,255,.16);color:#A995FF;font-weight:600;
}
.badge-state{
  display:inline-block;border-radius:999px;font-size:12px;padding:4px 10px;
  background:var(--brand-soft);color:var(--brand);font-weight:600;
}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;padding:64px 0 72px;overflow:hidden;
  background:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px) 0 0/100% 44px,
    radial-gradient(900px 420px at 12% -10%,rgba(184,242,75,.10),transparent 70%),
    #101218;
  border-bottom:1px solid var(--line);
}
.crumbs{font-size:13px;color:var(--text-3);margin-bottom:28px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--line-strong);}
.crumbs .now{color:var(--text-2);}
.page-head h1{margin-bottom:20px;}
.page-head .lead{font-size:17px;line-height:1.9;color:var(--text-2);max-width:560px;margin-bottom:28px;}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:40px;}
.stats{display:flex;flex-wrap:wrap;gap:40px;border-top:1px solid var(--line);padding-top:26px;}
.stat b{display:block;font-size:32px;font-weight:800;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat small{font-size:13px;color:var(--text-3);}
.head-visual{position:relative;border-radius:var(--r-box);overflow:hidden;border:1px solid var(--line);}
.head-visual img{width:100%;height:100%;min-height:320px;object-fit:cover;}
.head-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(184,242,75,.34),rgba(184,242,75,0) 46%);
  mix-blend-mode:screen;pointer-events:none;
}
.head-visual::before{
  content:"";position:absolute;inset:0;z-index:2;
  background:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px) 0 0/100% 32px;
  pointer-events:none;
}
.head-figure figcaption{font-size:12px;color:var(--text-3);margin-top:10px;}

/* ---------- 流程时间轴 ---------- */
.flow{position:relative;padding-left:56px;}
.flow::before{content:"";position:absolute;left:19px;top:12px;bottom:16px;width:1px;background:var(--line-strong);}
.flow-item{position:relative;margin-bottom:24px;}
.flow-item:last-child{margin-bottom:0;}
.flow-node{
  position:absolute;left:-56px;top:14px;width:40px;height:40px;border-radius:999px;
  background:var(--surface-1);border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;
}
.flow-item:first-child .flow-node{border-color:var(--brand);background:var(--brand-soft);}
.flow-card{
  background:var(--surface-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:border-color 160ms ease,transform 160ms ease;
}
.flow-card:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.flow-card h3{font-size:20px;font-weight:700;margin-bottom:8px;}
.flow-card p{font-size:15px;color:var(--text-2);line-height:1.9;}
.flow-card .tips{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  position:relative;background:var(--surface-1);border:1px solid var(--line);
  border-radius:var(--r-card);padding:32px 24px 24px;overflow:hidden;
  transition:border-color 160ms ease,transform 160ms ease;
}
.scene-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--accent);}
.scene-card:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.scene-card .icon-block{
  width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(122,92,255,.14);color:#A995FF;font-size:19px;margin-bottom:18px;
}
.scene-card h3{font-size:20px;margin-bottom:10px;}
.scene-card p{font-size:15px;color:var(--text-2);}
.scene-card ul{margin-top:16px;border-top:1px solid var(--line);padding-top:14px;}
.scene-card li{font-size:14px;color:var(--text-2);display:flex;gap:8px;padding:5px 0;}
.scene-card li i{color:var(--brand);font-size:12px;margin-top:7px;}

/* ---------- 表格 ---------- */
.table-wrap{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--surface-1);}
.table-scroll{overflow-x:auto;}
table.cmp{width:100%;border-collapse:collapse;min-width:760px;}
table.cmp th,table.cmp td{padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);}
table.cmp thead th{background:var(--surface-2);font-size:14px;color:var(--text-2);font-weight:600;letter-spacing:.5px;}
table.cmp tbody tr:nth-child(odd){background:rgba(255,255,255,.02);}
table.cmp tbody tr:last-child td{border-bottom:0;}
table.cmp td strong{color:var(--brand);font-weight:600;}
.scroll-hint{font-size:12px;color:var(--text-3);padding:10px 20px;border-top:1px solid var(--line);display:none;}

/* ---------- 支持区 ---------- */
.support-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.support-visual{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);}
.support-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.support-list{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.support-item{background:var(--surface-1);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;transition:border-color 160ms ease;}
.support-item:hover{border-color:var(--line-strong);}
.support-item i{font-size:18px;color:var(--brand);margin-bottom:12px;display:block;}
.support-item h4{font-size:17px;margin-bottom:8px;}
.support-item p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-color:var(--text);--bs-accordion-border-color:transparent;--bs-accordion-btn-color:var(--text);--bs-accordion-active-color:var(--text);--bs-accordion-active-bg:transparent;--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-btn-padding-x:0;--bs-accordion-btn-padding-y:20px;--bs-accordion-body-padding-x:0;--bs-accordion-body-padding-y:0;--bs-accordion-border-width:0;}
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.accordion-item:first-child{border-top:1px solid var(--line);}
.accordion-button{position:relative;background:transparent;font-size:16px;font-weight:600;padding:20px 32px 20px 0;box-shadow:none;color:var(--text);}
.accordion-button:not(.collapsed){color:var(--text);background:transparent;box-shadow:none;}
.accordion-button::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);width:3px;height:18px;background:var(--brand);border-radius:2px;transition:transform 180ms ease;}
.accordion-button:not(.collapsed)::before{transform:translateY(-50%) scaleY(1);}
.accordion-button{padding-left:16px;}
.accordion-button::after{background-image:none;content:"+";font-size:20px;font-weight:400;color:var(--brand);width:22px;height:22px;display:flex;align-items:center;justify-content:center;line-height:1;transition:transform 180ms ease;margin-left:auto;}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{padding:0 32px 20px 16px;font-size:15px;line-height:1.9;color:var(--text-2);}

/* ---------- CTA / 表单 ---------- */
.cta-band{background:var(--surface-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:start;}
.cta-left h2{margin-bottom:16px;}
.cta-left p{color:var(--text-2);margin-bottom:24px;}
.contact-list li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--text-2);}
.contact-list li:last-child{border-bottom:0;}
.contact-list i{color:var(--brand);margin-top:7px;font-size:14px;}
.form-card{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px;}
.form-row label .req{color:var(--alert);}
.form-control{
  width:100%;height:44px;background:#12141A;border:1px solid var(--line);
  border-radius:var(--r-btn);color:var(--text);font-size:15px;padding:0 14px;
  font-family:inherit;transition:border-color 160ms ease,box-shadow 160ms ease;
}
textarea.form-control{height:auto;min-height:104px;padding:12px 14px;line-height:1.8;resize:vertical;}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(184,242,75,.15);color:var(--text);}
.form-note{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7;}
.form-err{font-size:12px;color:var(--alert);margin-top:6px;display:none;}
.form-row.is-err .form-control{border-color:var(--alert);}
.form-row.is-err .form-err{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A0B0E;border-top:1px solid var(--line);padding:64px 0 28px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.foot-brand .brand-text{font-size:17px;font-weight:800;color:var(--text);}
.foot-brand .brand-text span{display:block;font-size:11px;letter-spacing:2px;color:var(--text-3);font-weight:600;margin-top:2px;}
.foot-brand p{font-size:14px;color:var(--text-2);line-height:1.9;margin-top:16px;max-width:340px;}
.site-footer h4{font-size:14px;color:var(--text-3);letter-spacing:1px;margin-bottom:16px;font-weight:600;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{font-size:14px;color:var(--text-2);}
.foot-links a:hover{color:var(--brand);text-decoration:underline;}
.foot-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  h1{font-size:46px;}
  h2{font-size:34px;}
}
@media (max-width:991px){
  :root{--side:76px;}
  .side-nav{width:76px;padding:0 10px 16px;}
  .brand{padding-left:0;justify-content:center;}
  .brand-text{display:none;}
  .brand-mini{display:block;}
  .nav-item{justify-content:center;padding:12px 0;border-left-width:3px;}
  .nav-item .nav-label{
    position:absolute;left:100%;margin-left:12px;top:50%;transform:translateY(-50%);
    background:var(--surface-2);border:1px solid var(--line);border-radius:8px;
    padding:6px 12px;font-size:13px;color:var(--text);white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity 160ms ease;
  }
  .nav-item:hover .nav-label,.nav-item:focus-visible .nav-label{opacity:1;}
  .side-cta{display:none;}
  .main{margin-left:76px;}
  .support-wrap{grid-template-columns:1fr;gap:32px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .scene-grid{grid-template-columns:1fr 1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  h1{font-size:38px;}
  h2{font-size:30px;}
}
@media (max-width:767px){
  h1{font-size:34px;}
  h2{font-size:26px;}
  h3{font-size:21px;}
  h4{font-size:17px;}
  section{padding:56px 0;}
  .shell{padding:0 16px;}
  .side-nav{
    width:82vw;max-width:320px;transform:translateX(-100%);
    box-shadow:0 0 40px rgba(0,0,0,.6);padding:0 16px 20px;
  }
  .side-nav.open{transform:translateX(0);}
  .side-nav .brand{justify-content:flex-start;padding-left:8px;}
  .side-nav .brand-text{display:block;}
  .side-nav .brand-mini{display:none;}
  .nav-item{justify-content:flex-start;padding:12px 14px;}
  .nav-item .nav-label{position:static;transform:none;opacity:1;background:none;border:0;padding:0;margin:0;font-size:15px;}
  .side-cta{display:block;}
  .main{margin-left:0;padding-top:56px;}
  .topbar{
    display:flex;position:fixed;top:0;left:0;right:0;height:56px;z-index:1050;
    background:#12141A;border-bottom:1px solid var(--line);
    align-items:center;justify-content:space-between;padding:0 16px;
  }
  .topbar .brand-text{font-size:15px;}
  .topbar .brand-text span{display:none;}
  .menu-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);background:transparent;color:var(--text);font-size:16px;}
  .menu-btn:hover{border-color:var(--brand);color:var(--brand);}
  .backdrop{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:1030;display:none;}
  .backdrop.open{display:block;}
  .page-head{padding:48px 0 56px;}
  .stats{gap:24px;}
  .stat{flex:1 1 40%;}
  .head-visual img{min-height:220px;}
  .scene-grid{grid-template-columns:1fr;}
  .support-list{grid-template-columns:1fr;}
  .flow{padding-left:44px;}
  .flow-node{left:-44px;width:32px;height:32px;font-size:12px;}
  .flow::before{left:15px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .form-card{padding:24px;}
  .scroll-hint{display:block;}
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --bg:#0E0F13;
  --surface-1:#16181F;
  --surface-2:#1E2129;
  --line:#242833;
  --line-strong:#3A4150;
  --brand:#B8F24B;
  --brand-hi:#CDFF6B;
  --brand-soft:rgba(184,242,75,.12);
  --accent:#7A5CFF;
  --accent-soft:rgba(122,92,255,.16);
  --alert:#FF6A2B;
  --text:#EDEFF4;
  --text-2:#9BA1B0;
  --text-3:#6C7280;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-block:20px;
  --shadow-lift:0 6px 18px rgba(184,242,75,.25);
  --t:160ms ease;

  --bs-primary:#B8F24B;
  --bs-primary-rgb:184,242,75;
  --bs-body-bg:#0E0F13;
  --bs-body-color:#EDEFF4;
  --bs-border-color:#242833;
  --bs-border-radius:14px;
  --bs-link-color:#B8F24B;
  --bs-link-hover-color:#CDFF6B;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t)}
figure{margin:0}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;line-height:1.25}
h1{font-size:56px;line-height:1.15;letter-spacing:-.01em}
h2{font-size:40px;line-height:1.2}
h3{font-size:28px;line-height:1.3;font-weight:700}
h4{font-size:20px;line-height:1.4;font-weight:700}
p{margin:0}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
ul,ol{margin:0}
strong{font-weight:700}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:1px solid var(--brand);outline-offset:2px}

/* ============ 容器 ============ */
.wrap{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}

/* ============ 左侧 Shell 导航 ============ */
.shell-side{
  position:fixed;
  top:0;left:0;
  width:248px;
  height:100vh;
  background:#12141A;
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:0 16px 20px;
  z-index:1040;
}
.brand-block{
  display:flex;
  align-items:center;
  gap:10px;
  height:72px;
  flex:0 0 auto;
  padding:0 4px;
  border-bottom:1px solid var(--line);
  margin-bottom:16px;
}
.brand-block:hover .brand-text{color:var(--brand)}
.brand-mark{
  display:none;
  width:38px;height:38px;
  border-radius:10px;
  background:var(--brand-soft);
  border:1px solid rgba(184,242,75,.3);
  color:var(--brand);
  font-size:14px;font-weight:800;
  align-items:center;justify-content:center;
  letter-spacing:.02em;
  flex:0 0 auto;
}
.brand-text{
  font-size:17px;
  font-weight:800;
  color:var(--text);
  line-height:1.2;
  transition:color var(--t);
}
.brand-text em{
  display:block;
  font-style:normal;
  font-size:10px;
  letter-spacing:.2em;
  color:var(--text-3);
  font-weight:500;
  margin-top:3px;
}

.side-nav{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:10px 14px;
  border-radius:10px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.5;
  transition:background var(--t),color var(--t);
}
.nav-item i{width:20px;font-size:16px;text-align:center;flex:0 0 20px}
.nav-item:hover{background:rgba(255,255,255,.04);color:var(--text)}
.nav-item.active{
  background:var(--brand-soft);
  color:var(--brand);
  box-shadow:inset 3px 0 0 var(--brand);
}
.nav-item.active i{color:var(--brand)}

.side-card{
  margin-top:auto;
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:16px;
}
.side-card p{font-size:13px;line-height:1.75;color:var(--text-2);margin-bottom:12px}
.side-card .btn-main{width:100%;justify-content:center;height:40px;font-size:14px;padding:0 12px}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-top{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  background:#12141A;
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  z-index:1050;
}
.mobile-top .brand-text{font-size:16px}
.burger{
  width:40px;height:40px;
  border-radius:10px;
  background:transparent;
  border:1px solid var(--line);
  color:var(--text);
  font-size:16px;
  cursor:pointer;
  transition:border-color var(--t),color var(--t),background var(--t);
}
.burger:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}

.mask{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.55);
  opacity:0;
  visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;
  z-index:1055;
}
.mask.open{opacity:1;visibility:visible}

.drawer{
  position:fixed;
  top:0;left:0;
  width:82vw;
  max-width:320px;
  height:100vh;
  background:#12141A;
  border-right:1px solid var(--line);
  transform:translateX(-102%);
  transition:transform .22s ease;
  z-index:1060;
  display:flex;
  flex-direction:column;
  padding:0 16px 24px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:56px;
  flex:0 0 auto;
  border-bottom:1px solid var(--line);
  margin-bottom:14px;
}
.drawer-head .brand-text{font-size:16px}
.drawer-close{
  width:36px;height:36px;
  border-radius:10px;
  background:transparent;
  border:1px solid var(--line);
  color:var(--text-2);
  cursor:pointer;
  font-size:15px;
  transition:border-color var(--t),color var(--t);
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer .nav-item{min-height:44px}

/* ============ 主内容区 ============ */
.shell-main{margin-left:248px;min-height:100vh}

/* ============ 页头 ============ */
.page-head{
  position:relative;
  padding:56px 0 72px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.6;
  pointer-events:none;
  z-index:0;
}
.page-head::before{
  content:"";
  position:absolute;
  top:-180px;right:-120px;
  width:520px;height:520px;
  background:radial-gradient(circle,rgba(184,242,75,.10),transparent 65%);
  pointer-events:none;
  z-index:0;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--brand)}
.crumbs em{font-style:normal;color:var(--text-2)}

.head-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--brand);
  background:var(--brand-soft);
  border:1px solid rgba(184,242,75,.25);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:18px;
}
.head-copy h1{margin-bottom:20px}
.head-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  max-width:58ch;
}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.head-facts{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:44px;
  margin:36px 0 0;
  padding:24px 0 0;
  border-top:1px solid var(--line);
}
.head-facts li strong{
  display:block;
  font-size:32px;
  font-weight:800;
  color:var(--brand);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.head-facts li span{font-size:13px;color:var(--text-3)}
.head-art img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-block);
  border:1px solid var(--line);
}

/* ============ 按钮 ============ */
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  background:var(--brand);
  color:var(--bg);
  border:1px solid var(--brand);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-main:hover{background:var(--brand-hi);border-color:var(--brand-hi);color:#0E0F13;box-shadow:var(--shadow-lift)}
.btn-main:active{transform:translateY(1px)}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--text);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background var(--t),border-color var(--t),color var(--t);
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.btn-block{width:100%}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{
  background:#0B0C10;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{margin-bottom:16px}
.sec-head p{font-size:16px;line-height:1.9;color:var(--text-2)}

/* ============ 价格卡 ============ */
.price-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:start;
}
.plan{
  position:relative;
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 24px 24px;
  transition:transform var(--t),border-color var(--t);
}
.plan:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.plan.featured{
  background:var(--surface-2);
  border-color:rgba(184,242,75,.34);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.plan.featured::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:var(--brand);
  border-radius:14px 14px 0 0;
}
.plan-badge{
  position:absolute;
  top:16px;right:16px;
  background:var(--brand);
  color:var(--bg);
  font-size:12px;
  font-weight:700;
  border-radius:999px;
  padding:4px 10px;
}
.plan h3{font-size:22px;margin-bottom:6px}
.plan-for{font-size:13px;color:var(--text-3);margin-bottom:20px}
.plan-num{
  font-size:40px;
  font-weight:800;
  color:var(--brand);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  display:flex;
  align-items:baseline;
  gap:6px;
  flex-wrap:wrap;
}
.plan-num small{font-size:14px;font-weight:500;color:var(--text-3)}
.plan-cycle{font-size:13px;color:var(--text-3);margin-top:6px}
.plan-list{
  list-style:none;
  padding:0;
  margin:22px 0 24px;
  border-top:1px solid var(--line);
  padding-top:20px;
}
.plan-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  margin-bottom:8px;
}
.plan-list li::before{
  content:"·";
  position:absolute;
  left:4px;top:-1px;
  color:var(--brand);
  font-weight:800;
  font-size:18px;
}
.plan-list li.off{color:var(--text-3);text-decoration:line-through}
.price-note{
  margin-top:24px;
  font-size:14px;
  color:var(--text-3);
  border-left:3px solid var(--line-strong);
  padding-left:14px;
}

/* ============ 对比表 ============ */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow-x:auto;
  background:var(--surface-1);
}
table.cmp{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:14px;
}
.cmp th,.cmp td{
  padding:14px 18px;
  text-align:left;
  border-bottom:1px solid var(--line);
  line-height:1.7;
  vertical-align:top;
}
.cmp thead th{
  background:var(--surface-2);
  font-size:13px;
  font-weight:700;
  color:var(--text);
  white-space:nowrap;
}
.cmp tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.cmp tbody tr:last-child td{border-bottom:0}
.cmp td:first-child{color:var(--text-2);font-weight:600}
.cmp td{color:var(--text-2)}
.cmp td strong{color:var(--text)}
.scroll-hint{
  display:none;
  margin-top:12px;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 计费说明 ============ */
.notes{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}
.note{
  display:flex;
  gap:18px;
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  transition:border-color var(--t),transform var(--t);
}
.note:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.note-idx{
  flex:0 0 auto;
  font-size:20px;
  font-weight:800;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  line-height:1.4;
}
.note h3{font-size:17px;font-weight:700;margin-bottom:8px}
.note p{font-size:14px;line-height:1.85;color:var(--text-2)}

/* ============ 报价表单 ============ */
.quote-grid{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:48px;
  align-items:start;
}
.quote-copy h2{margin-bottom:18px;font-size:36px}
.quote-copy > p{font-size:16px;line-height:1.9;color:var(--text-2);margin-bottom:28px}
.contact-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:14px}
.contact-list li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:15px;
  color:var(--text-2);
}
.contact-list i{
  color:var(--brand);
  font-size:15px;
  line-height:1.9;
  width:18px;
  text-align:center;
  flex:0 0 18px;
}
.quote-form{
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--r-block);
  padding:32px;
}
.form-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}
.field.full{grid-column:1 / -1}
.field label{
  display:block;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:6px;
}
.field label .req{color:var(--alert);margin-left:2px}
.field input,
.field select,
.field textarea{
  width:100%;
  background:#12141A;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text);
  font-size:15px;
  height:44px;
  padding:0 14px;
  outline:none;
  transition:border-color var(--t),box-shadow var(--t);
  appearance:none;
}
.field textarea{
  height:auto;
  min-height:112px;
  padding:12px 14px;
  line-height:1.8;
  resize:vertical;
}
.field select{
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%239BA1B0'%3E%3Cpath d='M8 11.5 2.5 5.5l1.1-1L8 9.3l4.4-4.8 1.1 1z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  background-size:14px;
  padding-right:38px;
}
.field input::placeholder,
.field textarea::placeholder{color:#4C5260}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(184,242,75,.15);
  color:var(--text);
}
.field .err{display:block;font-size:12px;color:var(--alert);margin-top:6px}
.form-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:24px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.form-foot p{font-size:13px;color:var(--text-3);line-height:1.7;max-width:52ch}

/* ============ FAQ ============ */
.faq{max-width:920px}
.faq .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq .accordion-item:first-child{border-top:1px solid var(--line)}
.faq .accordion-header{background:transparent;margin:0}
.faq .accordion-button{
  position:relative;
  width:100%;
  background:transparent;
  border:0;
  border-radius:0;
  box-shadow:none;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  text-align:left;
  padding:20px 38px 20px 0;
  transition:color var(--t),padding var(--t);
}
.faq .accordion-button:not(.collapsed){
  color:var(--brand);
  background:transparent;
  box-shadow:none;
  padding-left:16px;
}
.faq .accordion-button:not(.collapsed)::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:20px;
  background:var(--brand);
  border-radius:2px;
}
.faq .accordion-button::after{
  content:"+";
  background-image:none;
  position:absolute;
  right:4px;top:50%;
  transform:translateY(-50%);
  width:auto;height:auto;
  font-size:20px;
  font-weight:700;
  color:var(--brand);
  line-height:1;
  transition:transform .18s ease;
}
.faq .accordion-button:not(.collapsed)::after{
  content:"−";
  transform:translateY(-50%) rotate(180deg);
}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq .accordion-button:hover{color:var(--brand)}
.faq .accordion-body{
  padding:0 0 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-block);
  padding:44px;
  display:grid;
  grid-template-columns:1.45fr .55fr;
  gap:32px;
  align-items:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-90px;top:-90px;
  width:340px;height:340px;
  background:radial-gradient(circle,rgba(184,242,75,.14),transparent 65%);
  pointer-events:none;
}
.cta-band h2{font-size:34px;margin-bottom:14px;position:relative}
.cta-band p{font-size:16px;color:var(--text-2);max-width:60ch;position:relative}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end;position:relative}

/* ============ 页脚 ============ */
.site-footer{
  background:#0A0B0E;
  border-top:1px solid var(--line);
  margin-top:0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.1fr;
  gap:32px;
  padding:64px 0 40px;
}
.foot-brand .brand-text{font-size:18px;font-weight:800}
.foot-brand .brand-text span{
  display:block;
  font-size:11px;
  letter-spacing:.18em;
  color:var(--text-3);
  font-weight:500;
  margin-top:6px;
}
.foot-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:var(--text-2);
  max-width:38ch;
}
.foot-grid h4{
  font-size:14px;
  font-weight:600;
  color:var(--text-3);
  letter-spacing:.08em;
  margin-bottom:16px;
}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14px;color:var(--text-2)}
.foot-links a:hover{color:var(--brand);text-decoration:underline}
.foot-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding:20px 0 32px;
  font-size:12px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  h1{font-size:46px}
  h2{font-size:34px}
  .quote-grid{gap:32px}
  .cta-band{padding:36px}
  .cta-band h2{font-size:28px}
}

@media (max-width:991.98px){
  .shell-side{width:76px;padding:0 12px 18px}
  .shell-main{margin-left:76px}
  .brand-block{justify-content:center;padding:0}
  .brand-mark{display:inline-flex}
  .brand-text{display:none}
  .side-nav .nav-item{
    justify-content:center;
    padding:12px 0;
    gap:0;
  }
  .side-nav .nav-label{
    position:absolute;
    left:62px;
    top:50%;
    transform:translateY(-50%);
    background:var(--surface-2);
    border:1px solid var(--line-strong);
    border-radius:8px;
    padding:6px 12px;
    font-size:13px;
    color:var(--text);
    white-space:nowrap;
    opacity:0;
    pointer-events:none;
    transition:opacity var(--t);
    z-index:20;
  }
  .side-nav .nav-item:hover .nav-label,
  .side-nav .nav-item:focus-visible .nav-label{opacity:1}
  .side-card{display:none}
  .head-grid{grid-template-columns:1fr;gap:32px}
  .head-art{order:-1}
  .head-art img{aspect-ratio:16/9}
  .price-grid{grid-template-columns:1fr}
  .plan.featured{order:-1}
  .notes{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr}
  .quote-copy h2{font-size:30px}
  .cta-band{grid-template-columns:1fr;text-align:left}
  .cta-actions{justify-content:flex-start}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px 24px}
  .scroll-hint{display:block}
}

@media (max-width:767.98px){
  h1{font-size:34px}
  h2{font-size:26px}
  h3{font-size:21px}
  h4{font-size:17px}
  body{font-size:16px}
  .wrap{padding:0 16px}
  .shell-side{display:none}
  .shell-main{margin-left:0;padding-top:56px}
  .mobile-top{display:flex}
  .page-head{padding:24px 0 48px}
  .section{padding:56px 0}
  .sec-head{margin-bottom:32px}
  .head-lead{font-size:16px}
  .head-facts{gap:24px;margin-top:28px;padding-top:20px}
  .head-facts li{flex:1 1 40%}
  .head-facts li strong{font-size:26px}
  .plan{padding:24px 20px 20px}
  .plan h3{font-size:20px}
  .plan-num{font-size:32px}
  .quote-form{padding:22px 18px}
  .form-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 20px}
  .cta-band h2{font-size:24px}
  .cta-actions .btn-main,
  .cta-actions .btn-ghost{width:100%}
  .faq .accordion-button{font-size:15px;padding:18px 34px 18px 0}
  .faq .accordion-button:not(.collapsed){padding-left:14px}
  .foot-grid{grid-template-columns:1fr;padding:44px 0 28px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

@media (max-width:520px){
  .head-actions .btn-main,
  .head-actions .btn-ghost{width:100%}
  .form-foot{flex-direction:column;align-items:stretch}
  .form-foot .btn-main{width:100%}
}