/* roulang page: index */
:root{
  --ink-900:#070A0F;--ink-800:#0B0F16;--ink-700:#111722;--ink-600:#18202C;
  --line:rgba(255,255,255,.09);--line-strong:rgba(255,255,255,.16);
  --brand:#FF6B2C;--brand-2:#FFB020;--accent:#2DE2C5;--accent-2:#8B5CF6;
  --text:#EDF1F7;--muted:#9AA6B6;--muted-2:#6F7B8C;
  --danger:#FF4D6D;--success:#2DE2C5;
  --r-card:14px;--r-btn:10px;--r-sm:10px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow-brand:0 0 24px rgba(255,107,44,.28);
  --glow-accent:0 0 22px rgba(45,226,197,.22);
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--ink-900);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15.5px;line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(760px 420px at 12% -6%,rgba(255,107,44,.10),transparent 70%),
    radial-gradient(680px 380px at 92% 8%,rgba(45,226,197,.07),transparent 72%);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.3;color:#fff}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
button,input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;position:relative;z-index:1}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;height:68px;
  background:rgba(7,10,15,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.65),rgba(45,226,197,.45),transparent);
}
.header-inner{height:68px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:28px;height:28px;border-radius:8px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#070A0F;font-size:15px;font-weight:900;box-shadow:var(--glow-brand);
}
.brand-text{font-size:16.5px;font-weight:800;color:#fff;letter-spacing:-.01em;white-space:nowrap}
.main-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:4px}
.menu-link{
  display:inline-block;padding:9px 12px;font-size:14.5px;color:var(--muted);border-radius:8px;
  border-bottom:2px solid transparent;line-height:1.2;
}
.menu-link:hover{color:#fff;background:rgba(255,255,255,.04)}
.menu-link.active{
  color:#fff;border-bottom-color:var(--brand);
  text-shadow:0 0 12px rgba(255,107,44,.55);
  background:rgba(255,107,44,.07);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:14px}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border:0;border-radius:var(--r-btn);
  background:linear-gradient(135deg,#FF6B2C,#FFB020);color:#0A0D12;
  font-weight:800;font-size:15px;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn-brand:hover{transform:translateY(-2px);box-shadow:var(--glow-brand);color:#0A0D12}
.btn-brand:active{transform:translateY(1px)}
.btn-brand.header-cta{height:40px;padding:0 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  background:transparent;border:1px solid rgba(45,226,197,.45);color:var(--accent);
  font-weight:700;font-size:15px;cursor:pointer;
  transition:background-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:rgba(45,226,197,.08);box-shadow:var(--glow-accent);color:var(--accent)}
.btn-ghost:active{background:rgba(45,226,197,.14);transform:translateY(1px)}
.nav-toggle{
  width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line-strong);
  background:rgba(255,255,255,.03);display:none;place-items:center;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:17px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:560px;display:flex;align-items:center;overflow:hidden;
  background-image:
    linear-gradient(90deg,rgba(7,10,15,.96) 0%,rgba(7,10,15,.72) 50%,rgba(7,10,15,.32) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
}
.hero::before{
  content:"";position:absolute;width:620px;height:620px;left:-180px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,44,.20),transparent 66%);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:540px;height:540px;right:-140px;bottom:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,226,197,.18),transparent 68%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:72px 0 64px;width:100%}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,107,44,.14);border:1px solid rgba(255,107,44,.28);color:var(--brand);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;margin-bottom:18px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand);font-style:normal}
.hero h1{font-size:46px;line-height:1.24;font-weight:900;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--brand);text-shadow:0 0 26px rgba(255,107,44,.36)}
.hero-sub{font-size:17px;line-height:1.8;color:var(--muted);max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.trust-bar{display:flex;flex-wrap:wrap;gap:10px}
.trust-item{
  display:inline-flex;align-items:center;gap:7px;padding:7px 13px;border-radius:999px;
  background:rgba(11,15,22,.72);border:1px solid var(--line);color:var(--muted);font-size:12.5px;
}
.trust-item svg{width:14px;height:14px;stroke:var(--accent);fill:none;stroke-width:1.8}
.device-frame{
  position:relative;border-radius:18px;border:1px solid rgba(255,107,44,.35);
  background:linear-gradient(180deg,rgba(17,23,34,.9),rgba(7,10,15,.9));
  padding:12px;transform:perspective(1100px) rotateY(-6deg);
  box-shadow:0 24px 60px rgba(0,0,0,.6);
}
.device-frame img{border-radius:12px;width:100%;aspect-ratio:4/3;object-fit:cover;
  filter:brightness(.82) saturate(1.05)}
.device-frame::after{
  content:"";position:absolute;left:10%;right:10%;bottom:-26px;height:40px;border-radius:50%;
  background:radial-gradient(ellipse at center,rgba(255,107,44,.30),transparent 70%);filter:blur(10px);
}

/* ---------- section base ---------- */
.section{padding:88px 0;position:relative;z-index:1}
.section-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{font-size:29px;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15px;margin:0}
.section-head.row-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;max-width:none}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:var(--accent);margin-bottom:10px;
}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:2fr 1fr;grid-template-rows:auto auto;gap:22px}
.bento-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow);transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.bento-card:hover{border-color:rgba(255,107,44,.45);transform:translateY(-3px);box-shadow:0 16px 40px rgba(0,0,0,.55)}
.bento-main{grid-row:1/3;display:flex;flex-direction:column;gap:16px}
.bento-main img{border-radius:12px;aspect-ratio:16/9;object-fit:cover;filter:brightness(.78)}
.icon-box{
  width:44px;height:44px;border-radius:var(--r-sm);display:grid;place-items:center;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.03);
}
.icon-box svg{width:22px;height:22px;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon-brand svg{stroke:var(--brand)}
.icon-accent svg{stroke:var(--accent)}
.bento-card h3{font-size:19px;margin-bottom:8px}
.bento-card p{color:var(--muted);font-size:14.5px;margin-bottom:0}
.text-link{color:var(--accent);font-size:14px;font-weight:700;display:inline-flex;align-items:center;gap:6px}
.text-link:hover{color:var(--brand)}
.spec-strip{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.chip{
  display:inline-block;padding:5px 12px;border-radius:999px;font-size:12.5px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted);
}
.chip-accent{background:rgba(45,226,197,.12);border-color:rgba(45,226,197,.25);color:var(--accent)}
.chip-brand{background:rgba(255,107,44,.14);border-color:rgba(255,107,44,.28);color:var(--brand)}

/* ---------- carousel ---------- */
.shot-carousel{position:relative}
.shot-slide{display:grid;grid-template-columns:1.25fr 1fr;gap:36px;align-items:center;padding:0 6px}
.shot-frame{border-radius:16px;border:1px solid var(--line-strong);background:var(--ink-700);padding:10px}
.shot-frame img{border-radius:12px;aspect-ratio:16/10;object-fit:cover;filter:brightness(.8)}
.shot-copy h3{font-size:22px;margin-bottom:12px}
.shot-copy p{color:var(--muted);font-size:15px;margin-bottom:16px}
.shot-list li{display:flex;gap:10px;color:var(--muted);font-size:14px;margin-bottom:8px}
.shot-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px;flex:0 0 6px}
.carousel-indicators{position:static;margin:28px 0 0;justify-content:center}
.carousel-indicators [data-bs-target]{
  width:26px;height:3px;border:0;border-radius:999px;background:rgba(255,255,255,.22);
  opacity:1;margin:0 5px;transition:background-color .2s ease,box-shadow .2s ease;
}
.carousel-indicators .active{background:linear-gradient(90deg,var(--brand),var(--brand-2));box-shadow:var(--glow-brand)}
.carousel-control-prev,.carousel-control-next{width:46px;height:46px;border-radius:50%;top:38%;opacity:.85;
  background:rgba(11,15,22,.72);border:1px solid var(--line-strong)}
.carousel-control-prev{left:-6px}.carousel-control-next{right:-6px}
.carousel-control-prev:hover,.carousel-control-next:hover{opacity:1;border-color:var(--accent);box-shadow:var(--glow-accent)}
.carousel-control-prev-icon,.carousel-control-next-icon{width:16px;height:16px}

/* ---------- system cards ---------- */
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sys-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--shadow);transition:border-color .24s ease,transform .24s ease;
}
.sys-card:hover{border-color:rgba(45,226,197,.42);transform:translateY(-3px)}
.sys-card header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.sys-card h3{font-size:19px}
.sys-list li{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px}
.sys-list li:last-child{border-bottom:0}
.sys-list dt,.sys-list .k{color:var(--muted-2)}
.sys-list .v{color:var(--text);font-weight:600;text-align:right}

/* ---------- reviews ---------- */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.review-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--shadow);transition:transform .24s ease,border-color .24s ease;
}
.review-card:hover{transform:translateY(-3px);border-color:rgba(255,107,44,.4)}
.review-card.wide{grid-column:span 2;display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center;
  background:linear-gradient(135deg,rgba(255,107,44,.10),rgba(45,226,197,.05)),var(--ink-700)}
.stars{color:var(--brand-2);font-size:14px;letter-spacing:3px;margin-bottom:12px}
.review-card p{font-size:14.5px;color:var(--text);margin-bottom:16px}
.review-meta{display:flex;align-items:center;gap:10px}
.avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent-2));
  display:grid;place-items:center;font-size:13px;font-weight:800;color:#070A0F}
.review-meta span{font-size:13px;color:var(--muted-2)}
.review-side img{border-radius:12px;width:180px;aspect-ratio:1/1;object-fit:cover;filter:brightness(.8)}

/* ---------- download ---------- */
.download-band{
  background:linear-gradient(135deg,rgba(255,107,44,.16),rgba(45,226,197,.08));
  border-top:1px solid rgba(255,107,44,.28);border-bottom:1px solid rgba(45,226,197,.22);
}
.download-inner{display:grid;grid-template-columns:1fr auto;gap:44px;align-items:center}
.download-copy h2{font-size:29px;margin-bottom:12px}
.download-copy p{color:var(--muted);max-width:520px;margin:0}
.dl-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:26px}
.btn-download{
  display:flex;align-items:center;gap:14px;height:56px;padding:0 18px;border-radius:12px;
  background:var(--ink-700);border:1px solid var(--line-strong);color:var(--text);cursor:pointer;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;text-align:left;
}
.btn-download:hover{border-color:rgba(255,107,44,.55);transform:translateY(-2px);box-shadow:var(--glow-brand);color:var(--text)}
.btn-download svg{width:24px;height:24px;flex:0 0 24px;fill:none;stroke:var(--brand);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.btn-download .txt{display:flex;flex-direction:column;line-height:1.35}
.btn-download .txt b{font-size:16px;font-weight:700}
.btn-download .txt small{font-size:12px;color:var(--muted)}
.qr-block{display:flex;flex-direction:column;align-items:center;gap:12px}
.qr-placeholder{
  width:120px;height:120px;border-radius:12px;border:1px solid var(--line-strong);
  background:repeating-conic-gradient(#EDF1F7 0% 25%,#0B0F16 0% 50%) 0 0/12px 12px;
}
.qr-block small{font-size:12.5px;color:var(--muted-2);text-align:center;max-width:170px;line-height:1.7}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  display:flex;flex-direction:column;background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);height:100%;
  transition:border-color .24s ease,transform .24s ease;
}
.news-card:hover{border-color:rgba(255,107,44,.45);transform:translateY(-3px);color:inherit}
.news-thumb{position:relative;overflow:hidden}
.news-thumb img{aspect-ratio:16/9;object-fit:cover;filter:brightness(.82);transition:transform .24s ease}
.news-card:hover .news-thumb img{transform:scale(1.02)}
.news-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(7,10,15,.55))}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:13px;color:var(--muted-2)}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:rgba(17,23,34,.6);
}
.empty-state svg{width:48px;height:48px;stroke:var(--muted-2);fill:none;stroke-width:1.6;margin-bottom:16px}
.empty-state h3{font-size:16px;margin-bottom:8px}
.empty-state p{color:var(--muted);font-size:14px;margin-bottom:20px}

/* ---------- faq ---------- */
.faq .accordion-item{
  background:var(--ink-700);border:1px solid var(--line);border-radius:12px;
  margin-bottom:14px;overflow:hidden;
}
.faq .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  padding:18px 20px;box-shadow:none;border-left:3px solid transparent;gap:14px;
}
.faq .accordion-button:not(.collapsed){
  color:#fff;background:rgba(255,107,44,.06);border-left-color:var(--brand);box-shadow:none;
}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq .accordion-button::after{
  width:15px;height:15px;background-size:15px;
  filter:invert(62%) sepia(66%) saturate(2200%) hue-rotate(340deg) brightness(105%);
}
.faq .accordion-body{padding:0 22px 20px;color:var(--muted);font-size:14.5px;line-height:1.85}

/* ---------- bottom cta ---------- */
.bottom-cta{
  background:linear-gradient(135deg,rgba(255,107,44,.16),rgba(45,226,197,.08));
  border-top:1px solid rgba(255,107,44,.30);border-bottom:1px solid rgba(45,226,197,.20);
  padding:72px 0;
}
.bottom-cta .inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.bottom-cta h2{font-size:28px;margin-bottom:10px}
.bottom-cta p{color:var(--muted);margin:0;font-size:15px}
.bottom-cta .acts{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);position:relative;z-index:1}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.55),rgba(45,226,197,.4),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:64px 0 48px}
.footer-brand p{color:var(--muted);font-size:13.5px;margin:16px 0 0;max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:#fff}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--muted);font-size:14px}
.footer-col a:hover{color:var(--accent)}
.footer-note{color:var(--muted-2);font-size:13px;line-height:1.8}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;color:var(--muted-2);font-size:13px;
}

/* ---------- offcanvas ---------- */
.offcanvas{background:var(--ink-800);color:var(--text);border-left:1px solid var(--line)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas-title{font-size:16px;font-weight:800;color:#fff}
.btn-close{filter:invert(1) grayscale(1) brightness(1.6)}
.mobile-nav li{margin-bottom:14px}
.mobile-nav a{display:block;color:var(--muted);font-size:15px;padding:6px 0;border-bottom:1px solid var(--line)}
.mobile-nav a.active{color:#fff;border-bottom-color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero h1{font-size:40px}
  .section{padding:76px 0}
}
@media (max-width:991px){
  .main-nav,.header-actions .header-cta{display:none}
  .nav-toggle{display:grid}
  .header-actions{margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:36px}
  .hero-sub{max-width:none}
  .device-frame{transform:none}
  .bento{grid-template-columns:1fr;grid-template-rows:auto}
  .bento-main{grid-row:auto}
  .shot-slide{grid-template-columns:1fr;gap:24px}
  .sys-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .download-inner{grid-template-columns:1fr}
  .qr-block{flex-direction:row;align-items:center;gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px}
}
@media (max-width:767px){
  body{font-size:15px}
  .section{padding:52px 0}
  .hero{min-height:auto}
  .hero-inner{padding:48px 0 52px}
  .hero h1{font-size:29px}
  .hero h1 br{display:none}
  .hero-actions{flex-direction:column;gap:12px}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%}
  .section-head h2,.download-copy h2,.bottom-cta h2{font-size:23px}
  .section-head.row-head{flex-direction:column;align-items:flex-start}
  .sys-grid,.news-grid,.review-grid{grid-template-columns:1fr}
  .review-card.wide{grid-column:span 1;grid-template-columns:1fr}
  .review-side img{width:100%;aspect-ratio:16/9}
  .dl-buttons{grid-template-columns:1fr;gap:12px}
  .btn-download{width:100%}
  .bottom-cta .inner{flex-direction:column;align-items:flex-start}
  .bottom-cta .acts{width:100%;flex-direction:column}
  .bottom-cta .acts .btn-brand,.bottom-cta .acts .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .carousel-control-prev,.carousel-control-next{display:none}
}

/* roulang page: article */
:root{
  --ink-900:#070A0F; --ink-800:#0B0F16; --ink-700:#111722; --ink-600:#18202C;
  --line:rgba(255,255,255,.09); --line-strong:rgba(255,255,255,.16);
  --brand:#FF6B2C; --brand-2:#FFB020; --accent:#2DE2C5; --accent-2:#8B5CF6;
  --text:#EDF1F7; --muted:#9AA6B6; --muted-2:#6F7B8C;
  --danger:#FF4D6D; --success:#2DE2C5;
  --r-card:14px; --r-btn:10px; --r-img:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow-brand:0 0 24px rgba(255,107,44,.28);
  --glow-accent:0 0 22px rgba(45,226,197,.22);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink-900);color:var(--text);font-family:var(--font-cn);
  font-size:16px;line-height:1.8;letter-spacing:0;
  background-image:radial-gradient(900px 420px at 12% -6%,rgba(255,107,44,.10),transparent 62%),
                   radial-gradient(760px 400px at 88% 4%,rgba(45,226,197,.08),transparent 60%);
  background-repeat:no-repeat;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--accent);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:#fff}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.3}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
.section{padding:80px 0}
.section-tight{padding:56px 0}
.section-head{margin-bottom:36px;max-width:760px}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15px;margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);
  border:1px solid rgba(45,226,197,.25);background:rgba(45,226,197,.10);border-radius:999px;padding:5px 14px;margin-bottom:14px}
.eyebrow i{font-size:11px}

/* ---------- 顶部快讯条 ---------- */
.topline{background:linear-gradient(90deg,rgba(255,107,44,.18),rgba(45,226,197,.10));border-bottom:1px solid var(--line)}
.topline .container{display:flex;align-items:center;gap:12px;min-height:42px;font-size:13px;color:var(--muted)}
.topline strong{color:var(--brand-2);font-weight:700}
.topline a{margin-left:auto;white-space:nowrap;color:var(--accent);font-size:13px}
.topline a:hover{color:#fff}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(7,10,15,.88);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.site-header::after{content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.65),rgba(45,226,197,.45),transparent)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;font-size:15px;font-weight:900;
  color:#0A0D12;background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:var(--glow-brand)}
.brand-text{font-size:17px;font-weight:800;color:#fff;white-space:nowrap;letter-spacing:-.01em}
.brand:hover .brand-text{color:var(--brand-2)}
.main-nav{margin-left:8px;flex:1}
.nav-list{display:flex;align-items:center;gap:22px;list-style:none}
.menu-link{position:relative;display:inline-block;font-size:14.5px;color:var(--muted);padding:6px 0}
.menu-link:hover{color:#fff}
.menu-link.active{color:#fff;text-shadow:0 0 12px rgba(255,107,44,.55)}
.menu-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent))}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.btn-nav{height:40px;padding:0 18px;display:inline-flex;align-items:center;gap:8px;border-radius:var(--r-btn);
  font-size:14px;font-weight:800;color:#0A0D12;border:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));transition:transform .2s ease,box-shadow .2s ease}
.btn-nav:hover{transform:translateY(-2px);box-shadow:var(--glow-brand);color:#0A0D12}
.burger{width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);background:var(--ink-700);
  color:var(--text);display:none;place-items:center;font-size:16px}
.offcanvas{background:var(--ink-800);color:var(--text);border-right:1px solid var(--line-strong)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas .nav-list{flex-direction:column;align-items:stretch;gap:0;margin-left:0}
.offcanvas .menu-link{display:block;padding:14px 4px;border-bottom:1px solid var(--line);font-size:15px}
.offcanvas .menu-link.active::after{display:none}
.offcanvas .btn-nav{width:100%;justify-content:center;margin-top:18px;height:46px}
.btn-close{filter:invert(1) drop-shadow(0 0 6px rgba(255,107,44,.6))}

/* ---------- 面包屑 ---------- */
.crumbs{font-size:13px;color:var(--muted-2);padding:20px 0 0}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none}
.crumbs li::after{content:"/";margin-left:8px;color:var(--muted-2)}
.crumbs li:last-child::after{display:none}
.crumbs a{color:var(--accent)}
.crumbs .current{color:var(--muted);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章布局 ---------- */
.article-wrap{padding:28px 0 56px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:36px;align-items:start}
.article-main{min-width:0;max-width:820px}
.article-head{margin-bottom:22px}
.article-head h1{font-size:34px;line-height:1.32;margin-bottom:14px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.article-meta .dot{color:var(--muted-2)}
.badge-brand{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 12px;font-size:12.5px;
  color:var(--brand);background:rgba(255,107,44,.14);border:1px solid rgba(255,107,44,.28)}
.badge-safe{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 12px;font-size:12.5px;
  color:var(--accent);background:rgba(45,226,197,.12);border:1px solid rgba(45,226,197,.25)}
.article-cover{position:relative;margin:20px 0 26px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line)}
.article-cover img{width:100%;height:auto;border-radius:0;aspect-ratio:16/8;object-fit:cover;transition:transform .24s ease}
.article-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(7,10,15,.55))}
.article-cover:hover img{transform:scale(1.02)}

.article-body{font-size:16px;line-height:1.9;color:#DDE4EE;max-width:820px}
.article-body p{margin:0 0 1.2em}
.article-body h2{font-size:24px;margin:32px 0 16px;color:#fff;padding-left:12px;border-left:3px solid var(--brand)}
.article-body h3{font-size:20px;margin:24px 0 12px;color:#fff}
.article-body h4{font-size:17px;margin:20px 0 10px;color:#fff}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body li{margin-bottom:.5em}
.article-body a{color:var(--accent);border-bottom:1px dashed rgba(45,226,197,.45)}
.article-body a:hover{color:#fff;border-bottom-color:#fff}
.article-body blockquote{margin:22px 0;padding:16px 20px;border-left:4px solid var(--brand);
  background:rgba(255,107,44,.06);border-radius:0 12px 12px 0;color:#E7ECF4}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:18px auto;border-radius:var(--r-img)}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px}
.article-body thead th{background:var(--ink-600);color:#fff;font-weight:700}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.article-body code{background:var(--ink-600);border-radius:6px;padding:2px 7px;font-size:14px;color:var(--brand-2)}
.article-body hr{border:0;height:1px;background:var(--line-strong);margin:28px 0}

.article-foot{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12.5px;color:var(--muted);border:1px solid var(--line);background:var(--ink-700);border-radius:999px;padding:5px 12px}
.tag:hover{color:var(--accent);border-color:rgba(45,226,197,.45)}
.back-links{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 侧栏 / 目录 ---------- */
.article-side{position:sticky;top:92px;align-self:start}
.toc-card{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:18px;box-shadow:var(--shadow)}
.toc-card h3{font-size:14px;color:#fff;margin-bottom:12px;letter-spacing:.02em}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px;max-height:420px;overflow:auto}
.toc-list a{display:block;font-size:13.5px;color:var(--muted);padding:6px 8px;border-radius:8px;border-left:2px solid transparent}
.toc-list a:hover{color:#fff;background:rgba(255,107,44,.10);border-left-color:var(--brand)}
.toc-list a.lv3{padding-left:20px;font-size:13px;color:var(--muted-2)}
.toc-toggle{display:none;width:100%;margin-bottom:18px;height:46px;border-radius:var(--r-btn);
  background:var(--ink-700);border:1px solid var(--line-strong);color:var(--text);font-size:14px;font-weight:700;
  align-items:center;justify-content:center;gap:8px}

/* ---------- 空态 ---------- */
.empty-state{text-align:center;padding:56px 20px;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card)}
.empty-state i{font-size:46px;color:var(--muted-2);margin-bottom:16px}
.empty-state h2{font-size:20px;margin-bottom:8px}
.empty-state p{color:var(--muted);font-size:14.5px}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-download{display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border-radius:var(--r-btn);font-family:var(--font-cn);border:0;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease}
.btn-brand{height:48px;padding:0 22px;font-size:15px;font-weight:800;color:#0A0D12;
  background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.btn-brand:hover{transform:translateY(-2px);box-shadow:var(--glow-brand);color:#0A0D12}
.btn-brand:active{transform:translateY(1px)}
.btn-ghost{height:48px;padding:0 22px;font-size:15px;font-weight:700;color:var(--accent);
  background:transparent;border:1px solid rgba(45,226,197,.45)}
.btn-ghost:hover{background:rgba(45,226,197,.08);box-shadow:var(--glow-accent);color:var(--accent)}
.btn-ghost:active{background:rgba(45,226,197,.14)}
.btn-download{height:56px;padding:0 24px 0 20px;border-radius:12px;background:var(--ink-600);border:1px solid var(--line-strong);
  color:var(--text);text-align:left;min-width:210px}
.btn-download i{font-size:20px;color:var(--brand)}
.btn-download .dl-txt{display:flex;flex-direction:column;line-height:1.25}
.btn-download .dl-txt strong{font-size:16px;font-weight:700}
.btn-download .dl-txt span{font-size:12px;color:var(--muted)}
.btn-download:hover{border-color:rgba(255,107,44,.45);transform:translateY(-3px);box-shadow:var(--glow-brand);color:var(--text)}
.btn-brand.is-disabled,.btn-ghost.is-disabled,.btn-download.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- 卡片 ---------- */
.card-neon{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;
  box-shadow:var(--shadow);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;height:100%}
.card-neon:hover{transform:translateY(-3px);border-color:rgba(255,107,44,.45);box-shadow:0 14px 38px rgba(0,0,0,.5),var(--glow-brand)}
.card-neon h3{font-size:18px;margin-bottom:10px;color:#fff}
.card-neon p{font-size:14.5px;color:var(--muted);margin-bottom:12px}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted-2)}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.cover-thumb{position:relative;border-radius:var(--r-img);overflow:hidden;margin-bottom:14px}
.cover-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .24s ease}
.cover-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(7,10,15,.55))}
.card-neon:hover .cover-thumb img{transform:scale(1.02)}
.read-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--brand);font-weight:700}
.read-more:hover{color:var(--brand-2);gap:10px}

/* ---------- 提示卡 ---------- */
.notice-card{background:linear-gradient(135deg,rgba(255,107,44,.10),rgba(45,226,197,.05));
  border:1px solid rgba(255,107,44,.28);border-radius:var(--r-card);padding:22px;margin:26px 0}
.notice-card h3{font-size:18px;margin-bottom:10px;color:#fff}
.notice-card ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.notice-card li{display:flex;gap:10px;font-size:14.5px;color:var(--muted)}
.notice-card li i{color:var(--accent);margin-top:5px;font-size:13px}

/* ---------- FAQ ---------- */
.faq .accordion-item{background:var(--ink-700);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:14px}
.faq .accordion-button{background:var(--ink-700);color:var(--text);font-size:16px;font-weight:600;padding:18px 20px;box-shadow:none}
.faq .accordion-button:not(.collapsed){color:#fff;background:rgba(255,107,44,.09);box-shadow:inset 3px 0 0 var(--brand)}
.faq .accordion-button::after{width:16px;height:16px;background-size:16px;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%23FF6B2C' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 6l5 5 5-5'/%3E%3C/svg%3E")}
.faq .accordion-body{font-size:14.5px;line-height:1.85;color:var(--muted);padding:6px 20px 20px}
.faq .accordion-body strong{color:#fff}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(135deg,rgba(255,107,44,.16),rgba(45,226,197,.08));
  border:1px solid rgba(255,107,44,.30);border-radius:18px;padding:44px 34px;text-align:center}
.cta-band h2{font-size:29px;margin-bottom:12px}
.cta-band p{color:var(--muted);font-size:15px;max-width:660px;margin:0 auto 24px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);position:relative;margin-top:20px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.65),rgba(45,226,197,.45),transparent)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:56px 0 34px}
.footer-brand p{font-size:13.5px;color:var(--muted);margin:14px 0 0;line-height:1.8}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--muted)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:18px 0 26px;border-top:1px solid var(--line);font-size:13px;color:var(--muted-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 200px;gap:26px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991px){
  .main-nav{display:none}
  .burger{display:grid}
  .header-actions .btn-nav{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;display:none}
  .article-side.open{display:block;margin-bottom:26px}
  .toc-toggle{display:flex}
  .toc-list{max-height:none}
  .section{padding:56px 0}
  .section-head h2{font-size:25px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:44px 0 28px}
  .article-head h1{font-size:29px}
}
@media (max-width:767px){
  body{font-size:15px}
  .topline .container{font-size:12.5px;gap:8px}
  .topline a{margin-left:0}
  .grid-3,.grid-2{grid-template-columns:minmax(0,1fr)}
  .article-head h1{font-size:26px}
  .article-body{font-size:15px;line-height:1.85}
  .article-body h2{font-size:22px;margin-top:26px}
  .article-body h3{font-size:19px}
  .cta-band{padding:32px 20px}
  .cta-band h2{font-size:23px}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{width:100%}
  .btn-download{width:100%;min-width:0}
  .footer-grid{grid-template-columns:1fr}
  .article-body table,.article-body thead,.article-body tbody,.article-body th,.article-body td{display:block;width:100%}
  .article-body thead{display:none}
  .article-body tr{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;padding:8px;background:var(--ink-700)}
  .article-body td{border:0;border-bottom:1px dashed var(--line);padding:8px 6px}
  .article-body td:last-child{border-bottom:0}
}

/* roulang page: category1 */
:root{
  --ink-900:#070A0F;
  --ink-800:#0B0F16;
  --ink-700:#111722;
  --ink-600:#18202C;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF6B2C;
  --brand-2:#FFB020;
  --accent:#2DE2C5;
  --accent-2:#8B5CF6;
  --text:#EDF1F7;
  --muted:#9AA6B6;
  --muted-2:#6F7B8C;
  --danger:#FF4D6D;
  --success:#2DE2C5;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --shadow-hover:0 18px 40px rgba(0,0,0,.55);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--accent);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease;}
a:hover{color:#fff;}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.01em;color:#fff;line-height:1.35;margin:0;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid rgba(45,226,197,.8);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  padding-left:16px;
  padding-right:16px;
  margin:0 auto;
}
.section{padding:72px 0;}
.section-sm{padding:56px 0;}
.section-head{margin-bottom:28px;}
.section-head h2{font-size:28px;}
.section-head .sub{color:var(--muted);font-size:15px;margin-top:10px;max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand);
  background:rgba(255,107,44,.12);
  border:1px solid rgba(255,107,44,.28);
  border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.eyebrow.accent{color:var(--accent);background:rgba(45,226,197,.12);border-color:rgba(45,226,197,.25);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,10,15,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.65),rgba(45,226,197,.45),transparent);
}
.header-inner{
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#FF6B2C,#2DE2C5);
  color:#070A0F;font-weight:900;font-size:15px;
  box-shadow:0 0 18px rgba(255,107,44,.35);
}
.brand-text{font-size:17px;font-weight:800;color:#fff;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{flex:1;display:flex;justify-content:center;}
.nav-list{display:flex;align-items:center;gap:6px;}
.menu-link{
  display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:14.5px;color:var(--muted);font-weight:600;position:relative;
  transition:color .2s ease,background .2s ease;
}
.menu-link:hover{color:#fff;background:rgba(255,255,255,.05);}
.menu-link.active{color:#fff;text-shadow:0 0 12px rgba(255,107,44,.55);}
.menu-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#FF6B2C,#2DE2C5);
}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;border-radius:var(--radius-btn);cursor:pointer;
  font-weight:700;font-size:15px;text-align:center;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-brand{
  background:linear-gradient(135deg,#FF6B2C,#FFB020);
  color:#0A0D12;height:48px;padding:0 22px;font-weight:800;
}
.btn-brand:hover{transform:translateY(-2px);box-shadow:0 0 24px rgba(255,107,44,.4);color:#0A0D12;}
.btn-brand:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{
  background:transparent;border:1px solid rgba(45,226,197,.45);
  color:var(--accent);height:48px;padding:0 22px;
}
.btn-ghost:hover{background:rgba(45,226,197,.08);box-shadow:0 0 22px rgba(45,226,197,.22);color:var(--accent);}
.btn-ghost:active{background:rgba(45,226,197,.14);}
.btn-header{height:40px;padding:0 18px;font-size:14px;border-radius:9px;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;font-size:16px;
}
.nav-toggle:hover{border-color:rgba(255,107,44,.45);color:#fff;}
.offcanvas.nav-drawer{
  background:var(--ink-800);color:var(--text);border-left:1px solid var(--line);
  width:300px;
}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);}
.nav-drawer .drawer-list{display:flex;flex-direction:column;gap:6px;padding:18px 4px;}
.nav-drawer .drawer-list a{
  display:block;padding:12px 14px;border-radius:10px;color:var(--muted);
  font-size:15px;font-weight:600;background:rgba(255,255,255,.02);border:1px solid transparent;
}
.nav-drawer .drawer-list a:hover,.nav-drawer .drawer-list a.active{
  color:#fff;border-color:rgba(255,107,44,.35);background:rgba(255,107,44,.08);
}
.drawer-foot{margin-top:auto;padding:18px 4px 4px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}
.btn-close-neon{
  background:transparent;border:0;color:var(--brand);font-size:20px;
  width:36px;height:36px;border-radius:9px;
}
.btn-close-neon:hover{box-shadow:0 0 18px rgba(255,107,44,.35);}

/* ---------- Breadcrumb ---------- */
.breadcrumb-bar{padding:18px 0 0;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted-2);}
.crumbs a{color:var(--accent);}
.crumbs .sep{color:var(--muted-2);}
.crumbs .current{color:var(--muted);}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:264px;display:flex;align-items:center;
  background-image:linear-gradient(90deg,rgba(7,10,15,.96) 0%,rgba(7,10,15,.78) 55%,rgba(7,10,15,.5) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 260px at 12% 40%,rgba(255,107,44,.20),transparent 70%),
             radial-gradient(520px 240px at 88% 70%,rgba(45,226,197,.16),transparent 72%);
}
.page-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;}
.page-hero h1{font-size:36px;max-width:760px;margin-bottom:14px;}
.page-hero h1 span{color:var(--brand);}
.page-hero .lead{font-size:16px;color:var(--muted);max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;padding:5px 14px;font-size:12.5px;font-weight:700;
}
.badge-brand{background:rgba(255,107,44,.14);color:var(--brand);border:1px solid rgba(255,107,44,.28);}
.badge-safe{background:rgba(45,226,197,.12);color:var(--accent);border:1px solid rgba(45,226,197,.25);}
.badge-mute{background:rgba(255,255,255,.05);color:var(--muted);border:1px solid var(--line);}

/* ---------- Cards ---------- */
.card-neon{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.card-neon:hover{transform:translateY(-3px);border-color:rgba(255,107,44,.45);box-shadow:var(--shadow-hover);}
.card-title{font-size:19px;margin-bottom:10px;}
.card-text{color:var(--muted);font-size:14.5px;}

/* ---------- Timeline ---------- */
.timeline{position:relative;}
.timeline-step{position:relative;display:grid;grid-template-columns:52px 1fr;gap:18px;padding-bottom:34px;}
.timeline-step:last-child{padding-bottom:0;}
.timeline-step::before{
  content:"";position:absolute;left:17px;top:44px;bottom:-4px;width:1px;
  background:linear-gradient(180deg,#FF6B2C,#2DE2C5);
  opacity:.55;
}
.timeline-step:last-child::before{display:none;}
.step-num{
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#FF6B2C,#FFB020);
  color:#0A0D12;font-weight:900;font-size:15px;
  box-shadow:0 0 20px rgba(255,107,44,.4);
}
.step-body h3{font-size:18px;margin:4px 0 8px;}
.step-body p{color:var(--muted);font-size:14.5px;margin-bottom:12px;}
.step-shot{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
  position:relative;background:var(--ink-600);
}
.step-shot img{width:100%;height:190px;object-fit:cover;transition:transform .24s ease;}
.step-shot::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent,rgba(7,10,15,.55));
}
.step-shot:hover img{transform:scale(1.02);}
.shot-cap{font-size:13px;color:var(--muted);margin-top:8px;}

/* ---------- Side panel ---------- */
.side-card{
  background:linear-gradient(180deg,rgba(24,32,44,.9),rgba(17,23,34,.95));
  border:1px solid var(--line-strong);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow);
}
.side-card h3{font-size:18px;margin-bottom:6px;}
.side-card .side-sub{font-size:13px;color:var(--muted-2);margin-bottom:16px;}
.side-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--muted);padding:10px 0;border-bottom:1px dashed var(--line);
}
.side-list li:last-child{border-bottom:0;}
.side-list i{color:var(--accent);margin-top:4px;font-size:13px;}
.side-card.sticky-lg{position:sticky;top:92px;}

/* ---------- Check list ---------- */
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--muted);
}
.check-list li:last-child{border-bottom:0;}
.check-list .dot{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(45,226,197,.12);border:1px solid rgba(45,226,197,.25);
  color:var(--accent);font-size:12px;margin-top:3px;
}
.check-list strong{color:#fff;font-weight:700;}
.prep-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;height:100%;box-shadow:var(--shadow);
}
.prep-card h3{font-size:18px;margin-bottom:6px;}
.prep-card .prep-sub{font-size:13px;color:var(--muted-2);margin-bottom:14px;}

/* ---------- Trouble list ---------- */
.trouble-item{
  display:grid;grid-template-columns:44px 1fr;gap:16px;
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;margin-bottom:16px;box-shadow:var(--shadow);
  transition:border-color .24s ease,transform .24s ease;
}
.trouble-item:hover{border-color:rgba(45,226,197,.4);transform:translateY(-3px);}
.trouble-icon{
  width:44px;height:44px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,107,44,.12);border:1px solid rgba(255,107,44,.28);
  color:var(--brand);font-size:17px;
}
.trouble-item h3{font-size:17px;margin-bottom:6px;}
.trouble-item p{color:var(--muted);font-size:14.5px;margin-bottom:8px;}
.trouble-fix{font-size:13.5px;color:var(--accent);}
.trouble-fix i{margin-right:6px;}

/* ---------- Accordion ---------- */
.accordion-neon .accordion-item{
  background:var(--ink-700);border:1px solid var(--line);
  border-radius:12px;margin-bottom:12px;overflow:hidden;
}
.accordion-neon .accordion-button{
  background:var(--ink-700);color:#fff;font-size:16px;font-weight:600;
  padding:16px 20px 16px 22px;border:0;box-shadow:none;
}
.accordion-neon .accordion-button:not(.collapsed){
  background:rgba(255,107,44,.06);color:#fff;
  box-shadow:inset 3px 0 0 #FF6B2C;
}
.accordion-neon .accordion-button:focus{box-shadow:inset 3px 0 0 #FF6B2C;}
.accordion-neon .accordion-button::after{
  filter:invert(72%) sepia(42%) saturate(2400%) hue-rotate(340deg) brightness(105%);
}
.accordion-neon .accordion-body{
  color:var(--muted);font-size:14.5px;line-height:1.85;
  padding:4px 22px 20px;background:transparent;
}

/* ---------- CTA ---------- */
.cta-band{
  border-radius:16px;border:1px solid rgba(255,107,44,.28);
  background:linear-gradient(135deg,rgba(255,107,44,.16),rgba(45,226,197,.08));
  padding:40px 32px;text-align:center;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:26px;margin-bottom:12px;}
.cta-band p{color:var(--muted);font-size:15px;max-width:620px;margin:0 auto 22px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink-900);margin-top:20px;
  border-top:1px solid transparent;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.6),rgba(45,226,197,.45),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
  padding:56px 0 36px;
}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:14px;max-width:380px;}
.footer-col h4{font-size:15px;margin-bottom:14px;color:#fff;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--muted);font-size:14px;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:18px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted-2);
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
  .footer-col:last-child{grid-column:span 3;}
  .footer-col:last-child ul{flex-direction:row;flex-wrap:wrap;gap:18px;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-header{display:none;}
  .page-hero h1{font-size:30px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:24px;}
  .side-card.sticky-lg{position:static;margin-top:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-col:last-child{grid-column:span 2;}
  .footer-col:last-child ul{flex-direction:column;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .page-hero{min-height:auto;}
  .page-hero .container{padding-top:32px;padding-bottom:32px;}
  .page-hero h1{font-size:27px;}
  .page-hero .lead{font-size:15px;}
  .section{padding:48px 0;}
  .section-sm{padding:40px 0;}
  .timeline-step{grid-template-columns:44px 1fr;gap:14px;}
  .timeline-step::before{left:17px;}
  .step-shot img{height:170px;}
  .cta-band{padding:30px 20px;}
  .cta-band h2{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 28px;}
  .footer-col:last-child{grid-column:span 1;}
  .footer-bottom{flex-direction:column;}
  .brand-text{font-size:15px;}
}
@media (max-width:420px){
  .brand-text{max-width:150px;overflow:hidden;text-overflow:ellipsis;}
}

/* roulang page: category2 */
:root{
  --ink-900:#070A0F;--ink-800:#0B0F16;--ink-700:#111722;--ink-600:#18202C;
  --line:rgba(255,255,255,.09);--line-strong:rgba(255,255,255,.16);
  --brand:#FF6B2C;--brand-2:#FFB020;--accent:#2DE2C5;--accent-2:#8B5CF6;
  --text:#EDF1F7;--muted:#9AA6B6;--muted-2:#6F7B8C;
  --danger:#FF4D6D;--success:#2DE2C5;
  --r-card:14px;--r-btn:10px;--r-input:10px;
  --sh:0 10px 30px rgba(0,0,0,.45);
  --glow-brand:0 0 24px rgba(255,107,44,.28);
  --glow-accent:0 0 22px rgba(45,226,197,.22);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ink-900);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.8;overflow-x:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--accent);text-decoration:none;transition:color .2s ease}
a:hover{color:#fff}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.01em;margin:0;color:#fff}
p{margin:0 0 1.1em}
ul{margin:0;padding:0;list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-head{margin-bottom:32px;max-width:760px}
.section-head h2{font-size:30px;line-height:1.35;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15px;margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);letter-spacing:.06em;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--brand),var(--accent));border-radius:2px}

/* header */
.site-header{position:sticky;top:0;z-index:1040;background:rgba(7,10,15,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.site-header::after{content:"";display:block;height:1px;background:linear-gradient(90deg,transparent,rgba(255,107,44,.65),rgba(45,226,197,.45),transparent)}
.nav-bar{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;font-size:14px;font-weight:900;color:#0A0D12;background:linear-gradient(135deg,var(--brand),var(--accent))}
.brand-text{font-size:17px;font-weight:800;color:#fff;letter-spacing:.01em;white-space:nowrap}
.main-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:22px}
.menu-link{position:relative;display:inline-block;padding:6px 0;font-size:14.5px;color:var(--muted)}
.menu-link:hover{color:#fff}
.menu-link.active{color:#fff;text-shadow:0 0 12px rgba(255,107,44,.55)}
.menu-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.nav-cta{height:40px;padding:0 18px;border-radius:var(--r-btn);border:0;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:800;color:#0A0D12;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease;white-space:nowrap}
.nav-cta:hover{color:#0A0D12;transform:translateY(-2px);box-shadow:var(--glow-brand)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);background:transparent;color:var(--text);align-items:center;justify-content:center}
.offcanvas.offcanvas-end{background:var(--ink-800);color:var(--text);border-left:1px solid var(--line-strong)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas-title{font-size:16px;font-weight:800;color:#fff}
.btn-close{filter:invert(1) grayscale(1) brightness(2)}
.drawer-list li+li{margin-top:6px}
.drawer-list a{display:block;padding:12px 4px;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line)}
.drawer-list a.active,.drawer-list a:hover{color:#fff}
.drawer-list a.active{border-bottom-color:rgba(255,107,44,.6)}

/* buttons */
.btn-brand,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:48px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:800;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease}
.btn-brand{border:0;color:#0A0D12;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:var(--sh)}
.btn-brand:hover{color:#0A0D12;transform:translateY(-2px);box-shadow:var(--glow-brand)}
.btn-brand:active{transform:translateY(1px)}
.btn-ghost{border:1px solid rgba(45,226,197,.45);color:var(--accent);background:transparent}
.btn-ghost:hover{color:var(--accent);background:rgba(45,226,197,.08);box-shadow:var(--glow-accent)}
.btn-ghost:active{background:rgba(45,226,197,.14)}
.btn-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none !important}
.btn-download{display:flex;align-items:center;gap:16px;width:100%;min-height:56px;padding:10px 20px;border-radius:12px;background:var(--ink-700);border:1px solid var(--line);color:var(--text);text-align:left;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;cursor:pointer}
.btn-download:hover{border-color:rgba(255,107,44,.45);transform:translateY(-3px);box-shadow:var(--glow-brand);color:var(--text)}
.btn-download .dl-icon{width:38px;height:38px;flex:0 0 38px;border-radius:10px;display:grid;place-items:center;background:rgba(255,107,44,.14);border:1px solid rgba(255,107,44,.28);color:var(--brand)}
.btn-download .dl-main{display:block;font-size:16px;font-weight:700;color:#fff;line-height:1.4}
.btn-download .dl-sub{display:block;font-size:12px;color:var(--muted);line-height:1.5}

/* hero */
.page-hero{position:relative;min-height:290px;display:flex;align-items:center;background-image:linear-gradient(90deg,rgba(7,10,15,.96) 0%,rgba(7,10,15,.78) 48%,rgba(7,10,15,.42) 100%),url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;overflow:hidden}
.page-hero::after{content:"";position:absolute;inset:0;background:radial-gradient(560px 320px at 12% 20%,rgba(255,107,44,.22),transparent 70%),radial-gradient(460px 300px at 88% 82%,rgba(45,226,197,.18),transparent 72%);pointer-events:none}
.page-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:48px}
.breadcrumb-row{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted-2);margin-bottom:14px;flex-wrap:wrap}
.breadcrumb-row a{color:var(--accent)}
.breadcrumb-row .sep{color:var(--muted-2)}
.breadcrumb-row .cur{color:var(--muted)}
.page-hero h1{font-size:36px;line-height:1.3;max-width:820px}
.page-hero .lead{margin-top:14px;font-size:16px;color:var(--muted);max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}

.badge-pill{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:600}
.badge-brand{background:rgba(255,107,44,.14);color:var(--brand);border:1px solid rgba(255,107,44,.28)}
.badge-safe{background:rgba(45,226,197,.12);color:var(--accent);border:1px solid rgba(45,226,197,.25)}
.badge-plain{background:var(--ink-600);color:var(--muted);border:1px solid var(--line)}

/* cards */
.card-x{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;height:100%;box-shadow:var(--sh);transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease}
.card-x:hover{border-color:rgba(255,107,44,.45);transform:translateY(-3px);box-shadow:0 16px 38px rgba(0,0,0,.5)}
.card-x h3{font-size:19px;margin-bottom:10px}
.card-x p{font-size:14.5px;color:var(--muted);margin-bottom:12px}
.card-meta{font-size:13px;color:var(--muted-2)}
.icon-box{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;margin-bottom:16px;background:rgba(255,107,44,.12);border:1px solid rgba(255,107,44,.26);color:var(--brand)}
.icon-box.alt{background:rgba(45,226,197,.1);border-color:rgba(45,226,197,.24);color:var(--accent)}

/* download group */
.dl-panel{background:linear-gradient(135deg,rgba(255,107,44,.14),rgba(45,226,197,.07));border:1px solid rgba(255,107,44,.28);border-radius:18px;padding:32px;box-shadow:var(--sh)}
.dl-panel h2{font-size:26px;margin-bottom:10px}
.dl-panel .sub{color:var(--muted);font-size:15px;margin-bottom:26px}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.qr-row{display:flex;align-items:center;gap:18px;margin-top:24px;flex-wrap:wrap}
.qr-box{width:120px;height:120px;border-radius:12px;border:1px dashed var(--line-strong);background:var(--ink-800);display:grid;place-items:center;color:var(--muted-2);font-size:12px;text-align:center;padding:10px}
.qr-note{font-size:13px;color:var(--muted);max-width:520px;margin:0}

/* spec cards */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.spec-card{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh);transition:border-color .24s ease,transform .24s ease}
.spec-card:hover{border-color:rgba(45,226,197,.42);transform:translateY(-3px)}
.spec-card .spec-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.spec-card h3{font-size:19px}
.spec-list li{display:flex;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--muted)}
.spec-list li:last-child{border-bottom:0}
.spec-list b{color:#fff;font-weight:600;min-width:76px;flex:0 0 76px}

/* changelog */
.log-list{border-left:1px solid var(--line-strong);padding-left:0;margin-left:8px}
.log-item{position:relative;padding:0 0 26px 26px}
.log-item:last-child{padding-bottom:0}
.log-item::before{content:"";position:absolute;left:-6px;top:9px;width:11px;height:11px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:0 0 12px rgba(255,107,44,.55)}
.log-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.log-head .ver{font-size:16px;font-weight:800;color:#fff}
.log-head .date{font-size:13px;color:var(--muted-2)}
.log-item p{font-size:14.5px;color:var(--muted);margin:0}
.log-item ul li{font-size:14px;color:var(--muted);padding:3px 0 3px 16px;position:relative}
.log-item ul li::before{content:"";position:absolute;left:0;top:14px;width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.8}

/* steps */
.step-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.step-card{position:relative;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px 22px;box-shadow:var(--sh);overflow:hidden;transition:border-color .24s ease,transform .24s ease}
.step-card:hover{border-color:rgba(255,107,44,.42);transform:translateY(-3px)}
.step-num{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-size:15px;font-weight:900;color:#0A0D12;background:linear-gradient(135deg,var(--brand),var(--brand-2));margin-bottom:14px}
.step-card h3{font-size:18px;margin-bottom:8px}
.step-card p{font-size:14.5px;color:var(--muted);margin:0}
.step-line{height:1px;background:linear-gradient(90deg,var(--brand),var(--accent));opacity:.5;margin:14px 0 12px}
.step-shot{border-radius:12px;overflow:hidden;position:relative;margin-top:16px}
.step-shot img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s ease}
.step-shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(7,10,15,.55))}
.step-card:hover .step-shot img{transform:scale(1.02)}

/* faq */
.faq-acc .accordion-item{background:var(--ink-700);border:1px solid var(--line);border-radius:12px !important;margin-bottom:14px;overflow:hidden}
.faq-acc .accordion-button{background:var(--ink-700);color:#fff;font-size:16px;font-weight:600;padding:18px 20px;box-shadow:none;border-radius:12px !important}
.faq-acc .accordion-button::after{filter:invert(1) sepia(1) saturate(4) hue-rotate(340deg)}
.faq-acc .accordion-button:not(.collapsed){color:#fff;background:var(--ink-600)}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:var(--line-strong)}
.faq-acc .accordion-body{color:var(--muted);font-size:14.5px;line-height:1.8;padding:6px 20px 20px}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--brand)}

/* cta */
.cta-band{background:linear-gradient(135deg,rgba(255,107,44,.16),rgba(45,226,197,.08));border:1px solid rgba(255,107,44,.3);border-radius:18px;padding:38px 32px;text-align:center;box-shadow:var(--sh)}
.cta-band h2{font-size:28px;margin-bottom:12px}
.cta-band p{color:var(--muted);font-size:15px;max-width:640px;margin:0 auto 24px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* footer */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);margin-top:8px;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,107,44,.6),rgba(45,226,197,.4),transparent)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding:56px 0 36px}
.footer-brand p{font-size:14px;color:var(--muted);margin:16px 0 0;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:#fff}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0 32px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted-2)}

/* misc */
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);margin:0}
.mt-24{margin-top:24px}
.mt-32{margin-top:32px}

@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-bar{gap:12px}
  .page-hero h1{font-size:30px}
  .section{padding:56px 0}
  .dl-grid{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-col:last-child{grid-column:span 2}
  .footer-brand{grid-column:span 2}
}
@media (max-width:767px){
  body{font-size:15px}
  .page-hero{min-height:auto}
  .page-hero h1{font-size:28px}
  .page-hero .lead{font-size:15px}
  .section-head h2{font-size:24px}
  .dl-panel{padding:22px}
  .dl-panel h2{font-size:22px}
  .cta-band{padding:28px 20px}
  .cta-band h2{font-size:23px}
  .btn-brand,.btn-ghost{width:100%}
  .cta-actions{flex-direction:column}
  .btn-download{width:100%}
  .footer-grid{grid-template-columns:1fr;padding-top:40px}
  .footer-brand,.footer-col:last-child{grid-column:span 1}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category3 */
:root{
  --ink-900:#070A0F;
  --ink-800:#0B0F16;
  --ink-700:#111722;
  --ink-600:#18202C;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF6B2C;
  --brand-2:#FFB020;
  --accent:#2DE2C5;
  --accent-2:#8B5CF6;
  --text:#EDF1F7;
  --muted:#9AA6B6;
  --muted-2:#6F7B8C;
  --danger:#FF4D6D;
  --success:#2DE2C5;
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:16px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow-brand:0 0 24px rgba(255,107,44,.28);
  --glow-accent:0 0 22px rgba(45,226,197,.22);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--accent);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:#fff;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:800;line-height:1.3;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,10,15,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.65),rgba(45,226,197,.45),transparent);
}
.header-inner{
  height:68px;display:flex;align-items:center;gap:24px;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:28px;height:28px;border-radius:8px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#0A0D12;font-size:15px;font-weight:900;
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{flex:1 1 auto;display:flex;justify-content:center;}
.nav-list{display:flex;align-items:center;gap:6px;}
.menu-link{
  position:relative;display:block;padding:20px 12px;font-size:14.5px;color:var(--muted);
  white-space:nowrap;
}
.menu-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:12px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.menu-link:hover{color:#fff;}
.menu-link.active{color:#fff;text-shadow:0 0 12px rgba(255,107,44,.55);}
.menu-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-sm);
  background:var(--ink-700);border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(45,226,197,.5);color:var(--accent);}

/* ---------- 按钮 ---------- */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border:none;border-radius:var(--radius-sm);
  background:linear-gradient(135deg,#FF6B2C,#FFB020);
  color:#0A0D12;font-weight:800;font-size:15px;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,opacity .2s ease;
}
.btn-brand:hover{transform:translateY(-2px);box-shadow:var(--glow-brand);color:#0A0D12;}
.btn-brand:active{transform:translateY(1px);}
.btn-brand.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-sm);
  background:transparent;border:1px solid rgba(45,226,197,.45);
  color:var(--accent);font-weight:700;font-size:15px;cursor:pointer;
  transition:background-color .22s ease,box-shadow .22s ease,color .22s ease,transform .22s ease;
}
.btn-ghost:hover{background:rgba(45,226,197,.08);box-shadow:var(--glow-accent);color:var(--accent);}
.btn-ghost:active{background:rgba(45,226,197,.14);transform:translateY(1px);}
.btn-ghost.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 徽章 ---------- */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:700;line-height:1.5;
}
.badge-brand{background:rgba(255,107,44,.14);color:var(--brand);border:1px solid rgba(255,107,44,.28);}
.badge-safe{background:rgba(45,226,197,.12);color:var(--accent);border:1px solid rgba(45,226,197,.25);}
.badge-plain{background:rgba(255,255,255,.05);color:var(--muted);border:1px solid var(--line);}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted-2);margin-bottom:14px;}
.crumb a{color:var(--accent);}
.crumb span{color:var(--muted-2);}
.crumb .current{color:var(--muted);}

/* ---------- 分类小 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 60px;
  background-image:linear-gradient(90deg,rgba(7,10,15,.96) 0%,rgba(7,10,15,.78) 55%,rgba(7,10,15,.45) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(560px 320px at 12% 18%,rgba(255,107,44,.18),transparent 70%),
    radial-gradient(480px 300px at 88% 78%,rgba(45,226,197,.14),transparent 72%);
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{font-size:36px;font-weight:900;max-width:900px;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{margin-top:14px;font-size:17px;color:var(--muted);max-width:760px;line-height:1.75;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* ---------- 板块通用 ---------- */
.section{padding:64px 0;border-bottom:1px solid var(--line);}
.section.alt{background:var(--ink-800);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:28px;}
.section-head h2 span{color:var(--accent);}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  color:var(--accent);letter-spacing:.08em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--brand),var(--accent));border-radius:2px;}

/* ---------- 卡片 ---------- */
.card-dark{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;height:100%;transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.card-dark:hover{transform:translateY(-3px);border-color:rgba(255,107,44,.45);box-shadow:var(--shadow);}
.card-dark h3{font-size:19px;margin-bottom:10px;}
.card-dark p{font-size:14.5px;color:var(--muted);}
.icon-box{
  width:40px;height:40px;border-radius:var(--radius-sm);display:grid;place-items:center;
  background:rgba(255,107,44,.12);border:1px solid rgba(255,107,44,.28);margin-bottom:14px;
}
.icon-box svg{width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.icon-box.cyan{background:rgba(45,226,197,.1);border-color:rgba(45,226,197,.26);}
.icon-box.cyan svg{stroke:var(--accent);}
.icon-box.danger{background:rgba(255,77,109,.12);border-color:rgba(255,77,109,.3);}
.icon-box.danger svg{stroke:var(--danger);}

/* ---------- 安全清单 ---------- */
.check-list{display:grid;gap:14px;}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.check-item:hover{border-color:rgba(45,226,197,.42);transform:translateY(-2px);box-shadow:var(--shadow);}
.check-mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;display:grid;place-items:center;
  background:rgba(45,226,197,.12);border:1px solid rgba(45,226,197,.35);margin-top:3px;
}
.check-mark svg{width:14px;height:14px;stroke:var(--accent);fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
.check-item h3{font-size:17px;margin-bottom:6px;}
.check-item p{font-size:14.5px;color:var(--muted);}

/* ---------- 侧栏提示卡 ---------- */
.side-card{
  background:linear-gradient(160deg,rgba(255,107,44,.12),rgba(45,226,197,.06)),var(--ink-700);
  border:1px solid rgba(255,107,44,.3);border-radius:var(--radius);padding:24px;
  position:sticky;top:92px;
}
.side-card h3{font-size:18px;margin-bottom:12px;}
.side-card ul{display:grid;gap:12px;}
.side-card li{font-size:14px;color:var(--muted);padding-left:16px;position:relative;line-height:1.75;}
.side-card li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:999px;background:var(--brand);}
.side-note{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line-strong);
  font-size:13px;color:var(--muted-2);
}

/* ---------- 设备列表 ---------- */
.device-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:28px;}
.device-row{
  display:grid;grid-template-columns:1.4fr 1fr 1fr .9fr;
  gap:14px;padding:16px 20px;background:var(--ink-700);
  border-bottom:1px solid var(--line);align-items:center;font-size:14px;
}
.device-row:last-child{border-bottom:none;}
.device-row.head{background:var(--ink-600);font-size:13px;color:var(--muted);font-weight:700;}
.device-row .name{font-weight:700;color:var(--text);}
.device-row .muted{color:var(--muted);font-size:13.5px;}

/* ---------- 双重验证流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step;}
.step-card{
  position:relative;background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 22px 22px;
}
.step-num{
  width:36px;height:36px;border-radius:999px;display:grid;place-items:center;
  background:linear-gradient(135deg,#FF6B2C,#FFB020);color:#0A0D12;font-weight:900;font-size:15px;
  margin-bottom:16px;
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:14.5px;color:var(--muted);}
.step-line{
  height:1px;background:linear-gradient(90deg,#FF6B2C,#2DE2C5);
  opacity:.5;margin:22px 0 0;
}

/* ---------- 风险提示 ---------- */
.risk-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.risk-card{
  background:var(--ink-700);border:1px solid var(--line);border-left:3px solid var(--danger);
  border-radius:var(--radius);padding:22px;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.risk-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(255,77,109,.5);}
.risk-card h3{font-size:18px;margin-bottom:10px;}
.risk-card p{font-size:14.5px;color:var(--muted);}
.risk-card .tag{display:inline-block;margin-bottom:12px;font-size:12px;font-weight:700;color:var(--danger);letter-spacing:.06em;}

/* ---------- 表单 ---------- */
.form-panel{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius);padding:26px;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;}
.field .req{color:var(--brand);margin-left:4px;}
.input{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius-sm);
  background:#0F141D;border:1px solid var(--line);color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
textarea.input{height:auto;min-height:128px;padding:12px 14px;line-height:1.7;resize:vertical;}
.input::placeholder{color:var(--muted-2);}
.input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(45,226,197,.14),0 0 18px rgba(45,226,197,.18);
}
.form-hint{font-size:13px;color:var(--muted-2);margin-top:12px;}
.form-side{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.form-side img{width:100%;height:230px;object-fit:cover;}
.form-side .body{padding:22px;}
.form-side h3{font-size:18px;margin-bottom:10px;}
.form-side p{font-size:14.5px;color:var(--muted);}
.line-list{display:grid;gap:10px;margin-top:14px;}
.line-list li{font-size:14px;color:var(--muted);display:flex;gap:10px;}
.line-list li strong{color:var(--text);font-weight:700;flex:0 0 auto;}

/* ---------- FAQ ---------- */
.acc .accordion-item{
  background:var(--ink-700);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;
}
.acc .accordion-button{
  position:relative;background:transparent;color:var(--text);
  font-size:16px;font-weight:600;padding:18px 20px;box-shadow:none;
}
.acc .accordion-button:not(.collapsed){
  background:rgba(255,107,44,.06);color:#fff;box-shadow:none;
}
.acc .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,#FF6B2C,#FFB020);
}
.acc .accordion-button::after{
  filter:invert(1) brightness(1.6);opacity:.7;
}
.acc .accordion-button:focus{box-shadow:0 0 0 3px rgba(45,226,197,.14);border-color:var(--accent);}
.acc .accordion-body{padding:0 20px 20px;font-size:14.5px;color:var(--muted);line-height:1.85;}
.acc .accordion-body strong{color:var(--text);font-weight:700;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  padding:56px 0;
  background:linear-gradient(135deg,rgba(255,107,44,.16),rgba(45,226,197,.08));
  border-top:1px solid rgba(255,107,44,.35);
  border-bottom:1px solid rgba(45,226,197,.25);
}
.cta-inner{
  display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;
}
.cta-inner h2{font-size:26px;}
.cta-inner p{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);border-top:1px solid var(--line);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.8;margin-bottom:12px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:13.5px;color:var(--muted);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:40px;border-top:1px solid var(--line);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--muted-2);
}

/* ---------- 移动端抽屉 ---------- */
.offcanvas.mobile-drawer{
  background:var(--ink-800);color:var(--text);border-left:1px solid var(--line-strong);
  width:300px;
}
.mobile-drawer .drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--line);
}
.mobile-drawer .drawer-body{padding:20px;}
.mobile-drawer .drawer-link{
  display:block;padding:12px 0;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line);
}
.mobile-drawer .drawer-link:hover{color:#fff;}
.mobile-drawer .drawer-link.active{color:var(--brand);font-weight:700;}
.mobile-drawer .btn-brand{width:100%;margin-top:22px;}
.drawer-close{background:none;border:none;color:var(--accent);font-size:24px;line-height:1;cursor:pointer;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .page-hero h1{font-size:34px;}
  .section-head h2{font-size:26px;}
}
@media (max-width:991.98px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .to-desktop{display:none;}
  .section{padding:56px 0;}
  .page-hero{padding:44px 0 48px;}
  .page-hero h1{font-size:30px;}
  .steps{grid-template-columns:1fr;}
  .risk-grid{grid-template-columns:1fr;}
  .side-card{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
}
@media (max-width:767.98px){
  body{font-size:15px;}
  .brand-text{font-size:15px;}
  .page-hero h1{font-size:27px;}
  .hero-sub{font-size:15.5px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:22px;}
  .cta-inner h2{font-size:22px;}
  .device-row{grid-template-columns:1fr;gap:4px;padding:16px;}
  .device-row.head{display:none;}
  .device-row .name{font-size:15px;}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category5 */
:root{
  --ink-900:#070A0F;
  --ink-800:#0B0F16;
  --ink-700:#111722;
  --ink-600:#18202C;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF6B2C;
  --brand-2:#FFB020;
  --accent:#2DE2C5;
  --accent-2:#8B5CF6;
  --text:#EDF1F7;
  --muted:#9AA6B6;
  --muted-2:#6F7B8C;
  --danger:#FF4D6D;
  --success:#2DE2C5;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow-brand:0 0 24px rgba(255,107,44,.28);
  --glow-accent:0 0 22px rgba(45,226,197,.22);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--accent);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease;}
a:hover{color:#fff;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{letter-spacing:-.01em;font-weight:800;margin:0;line-height:1.35;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
button,input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,10,15,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.65),rgba(45,226,197,.45),transparent);
}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#0A0D12;font-weight:900;font-size:15px;
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-text{font-size:17px;font-weight:800;color:#fff;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{margin-left:auto;}
.nav-list{display:flex;align-items:center;gap:22px;}
.menu-link{
  position:relative;display:inline-block;
  font-size:14.5px;color:var(--muted);
  padding:6px 0;
}
.menu-link:hover{color:#fff;}
.menu-link.active{
  color:#fff;
  text-shadow:0 0 12px rgba(255,107,44,.55);
}
.menu-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;
  text-align:center;font-weight:700;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;}
.btn-brand{
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  background:linear-gradient(135deg,#FF6B2C,#FFB020);
  color:#0A0D12;font-weight:800;font-size:15.5px;
  box-shadow:0 8px 22px rgba(255,107,44,.22);
}
.btn-brand:hover{transform:translateY(-2px);box-shadow:var(--glow-brand),0 12px 26px rgba(255,107,44,.28);color:#0A0D12;}
.btn-brand:active{transform:translateY(1px);}
.btn-ghost{
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  background:transparent;border:1px solid rgba(45,226,197,.45);
  color:var(--accent);font-weight:700;font-size:15.5px;
}
.btn-ghost:hover{background:rgba(45,226,197,.08);box-shadow:var(--glow-accent);color:var(--accent);}
.btn-ghost:active{background:rgba(45,226,197,.14);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn[disabled],.btn.disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}

/* ---------- 徽章 ---------- */
.badge-neon{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;line-height:1.6;
  background:rgba(255,107,44,.14);color:var(--brand);border:1px solid rgba(255,107,44,.28);
}
.badge-safe{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;line-height:1.6;
  background:rgba(45,226,197,.12);color:var(--accent);border:1px solid rgba(45,226,197,.25);
}
.badge-plain{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;font-size:12.5px;color:var(--muted);
  background:var(--ink-600);border:1px solid var(--line);
}

/* ---------- 页面小 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;padding:56px 0 46px;
  background-image:
    linear-gradient(180deg,rgba(7,10,15,.92) 0%,rgba(7,10,15,.78) 60%,rgba(7,10,15,.96) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(520px 240px at 12% 20%,rgba(255,107,44,.20),transparent 70%),
    radial-gradient(460px 220px at 88% 82%,rgba(45,226,197,.16),transparent 72%);
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{font-size:13px;color:var(--muted-2);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:14px;}
.crumbs a{color:var(--accent);}
.crumbs a:hover{color:#fff;}
.crumbs .sep{color:var(--muted-2);}
.crumbs .current{color:var(--muted);}
.page-hero h1{
  font-size:36px;font-weight:900;line-height:1.3;max-width:840px;
}
.page-hero h1 em{font-style:normal;background:linear-gradient(120deg,#FF6B2C,#FFB020);-webkit-background-clip:text;background-clip:text;color:transparent;}
.page-hero .hero-sub{margin-top:14px;font-size:16px;color:var(--muted);max-width:680px;}
.hero-tags{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px;}

/* 快讯条 */
.news-ticker{
  margin-top:26px;
  display:flex;align-items:stretch;gap:0;
  background:rgba(17,23,34,.82);
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.news-ticker .ticker-label{
  flex:0 0 auto;display:flex;align-items:center;gap:8px;
  padding:12px 18px;font-size:13px;font-weight:700;color:#0A0D12;
  background:linear-gradient(135deg,#FF6B2C,#FFB020);
  letter-spacing:.04em;
}
.news-ticker .ticker-items{
  display:flex;gap:22px;align-items:center;padding:12px 20px;overflow-x:auto;
  scrollbar-width:none;
}
.news-ticker .ticker-items::-webkit-scrollbar{display:none;}
.news-ticker .ticker-items a{
  white-space:nowrap;font-size:13.5px;color:var(--muted);
  display:inline-flex;align-items:center;gap:8px;
}
.news-ticker .ticker-items a::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto;
}
.news-ticker .ticker-items a:hover{color:#fff;}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0;}
.section-alt{background:var(--ink-800);}
.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 .sub{color:var(--muted);font-size:15px;margin-top:8px;}
.section-head .more-link{font-size:14px;color:var(--accent);display:inline-flex;align-items:center;gap:6px;}
.section-head .more-link:hover{color:#fff;}

/* ---------- 头条精选 ---------- */
.feature-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:22px;}
.feature-main{
  position:relative;display:block;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--ink-700);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.feature-main:hover{border-color:rgba(255,107,44,.45);transform:translateY(-3px);box-shadow:var(--shadow);}
.feature-main .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.feature-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.feature-main:hover .thumb img{transform:scale(1.03);}
.feature-main .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 30%,rgba(7,10,15,.72) 100%);
}
.feature-main .body{padding:22px 24px 24px;}
.feature-main h3{font-size:22px;margin:12px 0 10px;color:#fff;}
.feature-main p{color:var(--muted);font-size:15px;}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:22px;}
.side-card{
  display:grid;grid-template-columns:130px 1fr;gap:16px;align-items:center;
  padding:16px;border-radius:var(--radius-card);
  background:var(--ink-700);border:1px solid var(--line);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.side-card:hover{border-color:rgba(255,107,44,.45);transform:translateY(-3px);box-shadow:var(--shadow);}
.side-card .thumb{border-radius:12px;overflow:hidden;aspect-ratio:4/3;}
.side-card .thumb img{width:100%;height:100%;object-fit:cover;}
.side-card h3{font-size:17px;color:#fff;margin:10px 0 8px;line-height:1.5;}
.side-card .meta{font-size:13px;color:var(--muted-2);}

/* ---------- 资讯卡片列表 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.news-card:hover{border-color:rgba(255,107,44,.45);transform:translateY(-3px);box-shadow:var(--shadow);}
.news-card .cover{position:relative;aspect-ratio:16/9;overflow:hidden;}
.news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .cover img{transform:scale(1.02);}
.news-card .cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(7,10,15,.55) 100%);
}
.news-card .cover .tag{position:absolute;left:14px;top:14px;z-index:2;}
.news-card .inner{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.news-card h3{font-size:18px;line-height:1.55;color:#fff;margin-bottom:10px;}
.news-card h3 a{color:#fff;}
.news-card h3 a:hover{color:var(--brand);}
.news-card .excerpt{color:var(--muted);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card .foot{
  margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted-2);
}
.news-card .foot .arrow{color:var(--brand);font-weight:700;}

/* ---------- 分页 ---------- */
.pager{margin-top:38px;display:flex;justify-content:center;}
.page-list{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.page-list a,.page-list span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:42px;height:42px;padding:0 14px;border-radius:10px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--muted);font-size:14px;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.page-list a:hover{border-color:var(--accent);color:#fff;}
.page-list .current{
  background:linear-gradient(135deg,#FF6B2C,#FFB020);border-color:transparent;color:#0A0D12;font-weight:800;
}
.page-list .disabled{opacity:.45;pointer-events:none;}

/* ---------- 更新提醒条 ---------- */
.notice-band{
  margin-top:8px;
  border-radius:16px;padding:26px 28px;
  background:linear-gradient(135deg,rgba(255,107,44,.14),rgba(45,226,197,.07));
  border:1px solid rgba(255,107,44,.28);
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
}
.notice-band h3{font-size:19px;color:#fff;margin-bottom:6px;}
.notice-band p{color:var(--muted);font-size:14.5px;max-width:640px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto;}
.accordion-item{
  background:var(--ink-700);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  background:var(--ink-700);color:var(--text);font-size:16px;font-weight:600;
  padding:18px 20px;box-shadow:none;border:0;position:relative;
}
.accordion-button:not(.collapsed){background:var(--ink-600);color:#fff;}
.accordion-button:focus{box-shadow:none;outline:none;}
.accordion-button::after{
  content:"";width:12px;height:12px;margin-left:auto;
  background-image:none;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);transition:transform .24s ease,border-color .24s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(225deg);border-color:var(--brand);}
.accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--brand);}
.accordion-body{color:var(--muted);font-size:14.6px;line-height:1.85;padding:4px 20px 20px;background:var(--ink-600);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  border-radius:18px;padding:44px 40px;
  background:linear-gradient(135deg,rgba(255,107,44,.16),rgba(45,226,197,.08));
  border:1px solid rgba(255,107,44,.32);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:27px;max-width:640px;}
.cta-band p{color:var(--muted);margin-top:12px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);margin-top:20px;
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,rgba(255,107,44,.6),rgba(45,226,197,.4),transparent) 1;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
  padding:56px 0 36px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.85;max-width:360px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:var(--muted);font-size:14px;}
.footer-col ul a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 24px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--muted-2);
}

/* ---------- 移动端抽屉 ---------- */
.offcanvas{background:var(--ink-800);color:var(--text);border-right:1px solid var(--line);}
.offcanvas-header{border-bottom:1px solid var(--line);}
.offcanvas-title{font-size:16px;font-weight:800;color:#fff;}
.btn-close{filter:invert(1) grayscale(1) brightness(1.6);}
.mobile-menu{display:flex;flex-direction:column;gap:14px;padding:22px 0;}
.mobile-menu a{color:var(--muted);font-size:15.5px;padding:8px 0;border-bottom:1px solid var(--line);}
.mobile-menu a:hover,.mobile-menu a.active{color:#fff;}
.mobile-menu a.active{text-shadow:0 0 12px rgba(255,107,44,.55);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .feature-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .page-hero h1{font-size:32px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .header-cta{display:none;}
  .section{padding:48px 0;}
  .page-hero{padding:40px 0 34px;}
  .page-hero h1{font-size:27px;}
  .page-hero .hero-sub{font-size:15px;}
  .section-head h2{font-size:22px;}
  .card-grid{grid-template-columns:1fr;}
  .side-card{grid-template-columns:110px 1fr;}
  .cta-band{padding:30px 22px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px;}
  .footer-bottom{flex-direction:column;}
  .news-ticker{flex-direction:column;}
  .news-ticker .ticker-label{justify-content:center;}
  .feature-main h3{font-size:19px;}
}
@media (max-width:520px){
  .page-list a,.page-list span{min-width:38px;height:38px;padding:0 10px;font-size:13px;}
  .side-card{grid-template-columns:1fr;}
  .side-card .thumb{aspect-ratio:16/9;}
}

/* roulang page: category4 */
:root{
  --ink-900:#070A0F;
  --ink-800:#0B0F16;
  --ink-700:#111722;
  --ink-600:#18202C;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF6B2C;
  --brand-2:#FFB020;
  --accent:#2DE2C5;
  --accent-2:#8B5CF6;
  --text:#EDF1F7;
  --muted:#9AA6B6;
  --muted-2:#6F7B8C;
  --danger:#FF4D6D;
  --success:#2DE2C5;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow-brand:0 0 24px rgba(255,107,44,.28);
  --glow-accent:0 0 22px rgba(45,226,197,.22);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease;}
button{font-family:inherit;}
h1,h2,h3,h4{letter-spacing:-.01em;line-height:1.35;margin:0;font-weight:800;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
::selection{background:rgba(255,107,44,.35);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{max-width:1200px;padding-left:16px;padding-right:16px;margin:0 auto;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,10,15,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.65),rgba(45,226,197,.45),transparent);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#0A0D12;font-weight:900;font-size:15px;
  display:grid;place-items:center;line-height:1;
}
.brand-text{font-size:17px;font-weight:800;color:#fff;white-space:nowrap;}
.main-nav{display:none;}
.nav-list{display:flex;align-items:center;gap:24px;list-style:none;margin:0;padding:0;}
.menu-link{position:relative;display:inline-block;padding:6px 0;font-size:14.5px;color:var(--muted);}
.menu-link:hover{color:#fff;}
.menu-link.active{color:#fff;text-shadow:0 0 12px rgba(255,107,44,.55);}
.menu-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--ink-700);color:var(--text);font-size:16px;display:grid;place-items:center;
  transition:border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:rgba(45,226,197,.45);color:var(--accent);box-shadow:var(--glow-accent);}
@media (min-width:992px){.main-nav{display:block;}}

/* ============ buttons ============ */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border:0;border-radius:var(--radius-btn);
  background:linear-gradient(135deg,#FF6B2C,#FFB020);
  color:#0A0D12;font-weight:800;font-size:15px;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn-brand:hover{transform:translateY(-2px);box-shadow:var(--glow-brand);color:#0A0D12;}
.btn-brand:active{transform:translateY(1px);}
.btn-brand.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  background:transparent;border:1px solid rgba(45,226,197,.45);
  color:var(--accent);font-weight:700;font-size:15px;cursor:pointer;
  transition:background .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:rgba(45,226,197,.08);box-shadow:var(--glow-accent);color:var(--accent);}
.btn-ghost:active{background:rgba(45,226,197,.14);transform:translateY(1px);}
.btn-ghost.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ============ badge ============ */
.badge-brand,.badge-safe{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12.5px;font-weight:600;line-height:1;
}
.badge-brand{background:rgba(255,107,44,.14);color:var(--brand);border:1px solid rgba(255,107,44,.28);}
.badge-safe{background:rgba(45,226,197,.12);color:var(--accent);border:1px solid rgba(45,226,197,.25);}

/* ============ breadcrumb ============ */
.crumb{padding:18px 0 0;font-size:13px;color:var(--muted);}
.crumb a{color:var(--accent);}
.crumb a:hover{color:#fff;}
.crumb .sep{margin:0 8px;color:var(--muted-2);}
.crumb .cur{color:var(--muted);}

/* ============ hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  margin-top:14px;
  padding:54px 0 58px;
  min-height:260px;
  display:flex;align-items:center;
  background-image:
    linear-gradient(100deg,rgba(7,10,15,.95) 0%,rgba(7,10,15,.78) 48%,rgba(7,10,15,.42) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(560px 300px at 12% 22%,rgba(255,107,44,.20),transparent 65%),
    radial-gradient(520px 280px at 86% 82%,rgba(45,226,197,.16),transparent 65%);
}
.cat-hero .hero-inner{position:relative;z-index:2;max-width:760px;}
.cat-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;letter-spacing:.04em;
  background:rgba(255,107,44,.12);border:1px solid rgba(255,107,44,.3);color:var(--brand);
}
.cat-hero h1{
  font-size:34px;font-weight:900;margin-bottom:14px;color:#fff;
}
.cat-hero h1 .hl{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-hero p.lead{font-size:15.5px;color:var(--muted);max-width:620px;margin-bottom:22px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;}

/* ============ section base ============ */
.section{padding:64px 0;}
.section-tight{padding:48px 0;}
.section-head{margin-bottom:32px;max-width:760px;}
.section-head h2{
  font-size:27px;font-weight:800;margin-bottom:12px;
}
.section-head h2 .hl{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.section-head p{font-size:15px;color:var(--muted);margin:0;}

/* ============ tools ============ */
.tools-panel{
  background:var(--ink-700);
  border:1px solid var(--line);
  border-radius:16px;
  padding:22px;
  display:grid;gap:16px;
  box-shadow:var(--shadow);
}
.search-row{
  display:flex;align-items:center;gap:12px;
  background:#0F141D;border:1px solid var(--line);
  border-radius:var(--radius-input);height:48px;padding:0 16px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-row:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(45,226,197,.14);}
.search-row i{color:var(--muted);font-size:14px;}
.search-row input{
  flex:1;height:100%;background:transparent;border:0;outline:none;
  color:var(--text);font-size:15px;font-family:inherit;
}
.search-row input::placeholder{color:var(--muted-2);}
.filter-tags{display:flex;flex-wrap:wrap;gap:10px;}
.filter-tag{
  height:38px;padding:0 16px;border-radius:999px;
  background:var(--ink-600);border:1px solid var(--line);color:var(--muted);
  font-size:14px;cursor:pointer;
  transition:color .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.filter-tag:hover{color:#fff;border-color:rgba(45,226,197,.45);box-shadow:var(--glow-accent);}
.filter-tag.active{
  background:linear-gradient(135deg,#FF6B2C,#FFB020);
  border-color:transparent;color:#0A0D12;font-weight:700;
}

/* ============ faq ============ */
.faq-group{margin-bottom:44px;}
.faq-group:last-child{margin-bottom:0;}
.group-title{
  display:flex;align-items:center;gap:10px;
  font-size:21px;font-weight:800;margin-bottom:18px;
}
.group-title::before{
  content:"";width:4px;height:20px;border-radius:999px;
  background:linear-gradient(180deg,var(--brand),var(--accent));
}
.group-title .count{
  font-size:13px;font-weight:600;color:var(--muted-2);
}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--ink-700);
  border:1px solid var(--line);
  border-left:3px solid transparent;
  border-radius:12px;
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.faq-item:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.faq-item.is-open{
  border-left-color:var(--brand);
  box-shadow:0 0 24px rgba(255,107,44,.16);
}
.faq-q{margin:0;font-size:16px;}
.faq-btn{
  position:relative;width:100%;text-align:left;
  background:transparent;border:0;color:var(--text);
  font-size:16px;font-weight:600;line-height:1.65;
  padding:18px 52px 18px 20px;cursor:pointer;
  transition:color .2s ease;
}
.faq-btn:hover{color:#fff;}
.faq-btn::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--muted);transition:transform .25s ease,color .25s ease;
}
.faq-btn[aria-expanded="true"]{color:#fff;}
.faq-btn[aria-expanded="true"]::after{transform:translateY(-50%) rotate(180deg);color:var(--brand);}
.faq-a{
  padding:0 20px 20px;color:var(--muted);
  font-size:14.5px;line-height:1.85;
}
.faq-a strong{color:var(--text);font-weight:700;}
.faq-empty{
  text-align:center;padding:56px 20px;
  background:var(--ink-700);border:1px dashed var(--line-strong);border-radius:16px;
}
.faq-empty i{font-size:44px;color:var(--muted-2);margin-bottom:16px;display:block;}
.faq-empty p{font-size:15px;color:var(--muted);margin-bottom:20px;}

/* ============ tip list ============ */
.split{display:grid;gap:32px;align-items:center;}
.split-media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);}
.split-media img{width:100%;border-radius:var(--radius-card);transition:transform .24s ease;}
.split-media:hover img{transform:scale(1.02);}
.split-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 40%,rgba(7,10,15,.55));
}
.tip-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;}
.tip-list li{
  position:relative;padding:14px 18px 14px 20px;
  background:var(--ink-700);border:1px solid var(--line);border-radius:12px;
  border-left:3px solid rgba(45,226,197,.5);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.tip-list li:hover{transform:translateY(-2px);border-left-color:var(--accent);box-shadow:var(--shadow);}
.tip-list .tip-code{display:inline-block;font-size:13px;font-weight:700;color:var(--brand);margin-right:8px;}
.tip-list .tip-text{font-size:14.5px;color:var(--muted);}
.tip-list .tip-text strong{color:var(--text);}

/* ============ steps ============ */
.step-grid{display:grid;gap:20px;}
.step-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{border-color:rgba(255,107,44,.45);transform:translateY(-3px);box-shadow:var(--shadow);}
.step-num{
  width:36px;height:36px;border-radius:50%;
  background:linear-gradient(135deg,#FF6B2C,#FFB020);
  color:#0A0D12;font-weight:900;font-size:15px;
  display:grid;place-items:center;margin-bottom:16px;
}
.step-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.step-card p{font-size:14.5px;color:var(--muted);margin:0;}

/* ============ cta band ============ */
.cta-band{
  background:linear-gradient(135deg,rgba(255,107,44,.16),rgba(45,226,197,.08));
  border-top:1px solid rgba(255,107,44,.35);
  border-bottom:1px solid rgba(45,226,197,.25);
  padding:64px 0;
}
.cta-inner{text-align:center;max-width:720px;margin:0 auto;}
.cta-inner h2{font-size:28px;font-weight:900;margin-bottom:14px;}
.cta-inner h2 .hl{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cta-inner p{color:var(--muted);font-size:15px;margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ============ footer ============ */
.site-footer{
  position:relative;background:var(--ink-900);
  border-top:1px solid var(--line);
  padding:56px 0 24px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,44,.6),rgba(45,226,197,.4),transparent);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--muted);max-width:420px;margin-bottom:12px;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:#fff;}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:38px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted-2);
}

/* ============ offcanvas ============ */
.offcanvas.mobile-drawer{
  background:var(--ink-800);color:var(--text);
  border-left:1px solid var(--line);width:302px;
}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);}
.mobile-drawer .brand-text{font-size:16px;}
.mobile-drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.7);opacity:.8;}
.drawer-list{list-style:none;margin:0 0 22px;padding:0;display:grid;gap:4px;}
.drawer-list a{
  display:block;padding:13px 14px;border-radius:10px;
  font-size:15px;color:var(--muted);border:1px solid transparent;
}
.drawer-list a:hover{background:var(--ink-700);color:#fff;}
.drawer-list a.active{
  color:#fff;background:rgba(255,107,44,.12);
  border-color:rgba(255,107,44,.35);
  text-shadow:0 0 12px rgba(255,107,44,.5);
}
.drawer-tip{font-size:13px;color:var(--muted-2);margin-top:18px;line-height:1.7;}

/* ============ responsive ============ */
@media (min-width:576px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (min-width:768px){
  .section{padding:72px 0;}
  .step-grid{grid-template-columns:repeat(3,1fr);}
  .split{grid-template-columns:1.15fr .85fr;}
}
@media (min-width:992px){
  .cat-hero h1{font-size:38px;}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;}
  .footer-bottom{flex-wrap:nowrap;}
}
@media (min-width:1200px){
  .cat-hero{padding:64px 0 68px;}
}
@media (max-width:991px){
  .brand-text{font-size:15.5px;}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .cat-hero{padding:44px 0 46px;min-height:auto;}
  .cat-hero h1{font-size:28px;}
  .cat-hero p.lead{font-size:15px;}
  .section-head h2{font-size:23px;}
  .group-title{font-size:19px;}
  .cta-inner h2{font-size:23px;}
  .btn-brand,.btn-ghost{width:100%;}
  .cta-actions{flex-direction:column;}
  .faq-btn{font-size:15.5px;padding:16px 46px 16px 18px;}
  .faq-a{padding:0 18px 18px;font-size:14px;}
  .tools-panel{padding:18px;}
  .filter-tag{height:36px;padding:0 14px;font-size:13.5px;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:26px;}
  .section-head h2{font-size:21px;}
  .search-row input{font-size:14px;}
}