/* roulang page: index */
:root{
  --ink-900:#070C14;
  --ink-800:#0C1420;
  --ink-700:#131D2B;
  --ink-600:#1C2836;
  --brand:#12C8B4;
  --brand-d:#0E9E92;
  --brand-l:#5FE3D6;
  --violet:#6C4DF6;
  --accent:#FF7A3D;
  --accent-2:#FFB020;
  --text-1:#E8EFF6;
  --text-2:#9FB0C0;
  --text-3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(5,10,18,.35);
  --sh-2:0 14px 40px -12px rgba(5,10,18,.6);
  --bs-primary:#12C8B4;
  --bs-body-bg:#070C14;
  --bs-body-color:#E8EFF6;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#5FE3D6;
  --bs-link-hover-color:#12C8B4;
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-border-radius:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:68px;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background:var(--ink-900);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color 180ms ease,transform 180ms ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.2px}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container-xl{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.wide{max-width:1280px}
.num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:68px;display:flex;align-items:center;
  background:rgba(7,12,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color 180ms ease,background 180ms ease;
}
.site-header.scrolled{border-bottom-color:var(--line);background:rgba(7,12,20,.92)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:700}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--violet));
  color:#04110F;font-size:15px;flex:0 0 auto;
}
.brand-text{font-size:17px;letter-spacing:.2px;white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:2px;
  padding:4px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow-x:auto;scrollbar-width:none;max-width:100%;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-block;padding:9px 16px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);white-space:nowrap;
  border:1px solid transparent;transition:all 180ms ease;
}
.chip:hover{color:var(--text-1);border-color:rgba(255,255,255,.16);background:rgba(255,255,255,.04)}
.chip.active{background:linear-gradient(120deg,var(--brand),var(--brand-l));color:#04211D;font-weight:600}
.header-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text-1);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{background:rgba(255,255,255,.09)}
.mobile-drawer{
  position:fixed;inset:68px 0 auto 0;z-index:999;
  background:rgba(7,12,20,.97);
  border-bottom:1px solid var(--line);
  padding:16px 20px 24px;
  display:none;
  backdrop-filter:blur(16px);
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:block;padding:13px 16px;border-radius:var(--r-md);
  color:var(--text-2);font-size:15px;border:1px solid transparent;
}
.mobile-drawer a:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.mobile-drawer a.active{color:#04211D;background:linear-gradient(120deg,var(--brand),var(--brand-l));font-weight:600}
.mobile-drawer .drawer-cta{margin-top:14px}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all 180ms ease;white-space:nowrap;
}
.btn i{font-size:13px}
.btn-cta{
  background:linear-gradient(120deg,var(--accent),#FF9A5F);color:#fff;
  box-shadow:0 0 0 1px rgba(255,122,61,.45),0 10px 26px -8px rgba(255,122,61,.55);
}
.btn-cta:hover{
  transform:translateY(-1px);filter:brightness(1.08);color:#fff;
  box-shadow:0 0 0 1px rgba(255,122,61,.6),0 14px 32px -6px rgba(255,122,61,.6);
}
.btn-cta:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand-l)}
.btn-ghost:hover{background:rgba(18,200,180,.1);transform:translateY(-1px);color:var(--brand-l)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-link{background:none;border:none;padding:0;height:auto;color:var(--brand-l);font-weight:600}
.btn-link i{transition:transform 180ms ease}
.btn-link:hover{color:var(--brand-l)}
.btn-link:hover i{transform:translateX(3px)}

/* ============ hero ============ */
.hero{position:relative;padding:104px 0 96px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.png);background-size:cover;background-position:center}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,20,.93),rgba(7,12,20,.88) 55%,var(--ink-900))}
.hero-inner{position:relative;z-index:2}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(18,200,180,.12);color:var(--brand-l);
  font-size:13px;letter-spacing:.04em;margin-bottom:22px;
}
.hero h1{font-size:clamp(30px,4vw,48px);line-height:1.22;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--brand-l)}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px 22px}
.hero-chips li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.hero-chips i{color:var(--brand);font-size:14px}
.glass-card{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
}
.hero-card{padding:18px;position:relative;overflow:hidden}
.hero-card::before{
  content:"";position:absolute;top:0;left:24px;right:24px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(95,227,214,.75),transparent);
}
.hero-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;padding:4px 4px 0}
.hero-card-head span{font-size:13px;color:var(--text-3)}
.hero-card-head strong{font-size:14px;color:var(--text-1)}
.dot-live{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--brand-l)}
.dot-live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(18,200,180,.16)}

/* ratio boxes */
.ratio-16x10{position:relative;aspect-ratio:16/10;border-radius:16px;overflow:hidden;background:var(--ink-700)}
.ratio-16x9{position:relative;aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:var(--ink-700)}
.ratio-4x3{position:relative;aspect-ratio:4/3;border-radius:16px;overflow:hidden;background:var(--ink-700)}
.ratio-16x10 img,.ratio-16x9 img,.ratio-4x3 img{width:100%;height:100%;object-fit:cover}

/* ============ section base ============ */
.section{padding:96px 0;position:relative}
.section-light{background:#F4F7F9;color:#16202B}
.section-light .section-sub{color:#5A6A78}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3}
.section-light .section-head h2{color:#16202B}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--brand-l);
  margin-bottom:12px;
}
.section-light .eyebrow{color:var(--brand-d)}
.section-sub{font-size:15px;color:var(--text-2);margin-top:10px;max-width:620px}

/* ============ features (1 big + 2 small) ============ */
.feature-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:stretch}
.feature-main{padding:20px;display:flex;flex-direction:column;gap:16px;min-height:320px}
.feature-main .ratio-16x9{flex:1 1 auto;min-height:150px;border-radius:var(--r-md)}
.feature-main h3{font-size:21px;margin-bottom:8px}
.feature-main p{font-size:14.5px;color:var(--text-2);line-height:1.7}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.feature-card{
  background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--r-md);padding:26px;display:flex;gap:18px;align-items:flex-start;
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(18,200,180,.35)}
.feature-icon{
  width:46px;height:46px;border-radius:12px;flex:0 0 46px;
  display:grid;place-items:center;font-size:18px;
  background:rgba(18,200,180,.12);color:var(--brand-l);
}
.feature-card h3{font-size:19px;margin-bottom:8px}
.feature-card p{font-size:14.5px;color:var(--text-2)}

/* ============ steps + device ============ */
.steps li{display:flex;gap:16px;padding-bottom:30px;position:relative}
.steps li:last-child{padding-bottom:0}
.steps li:not(:last-child)::after{
  content:"";position:absolute;left:19px;top:46px;bottom:6px;width:1px;
  background:linear-gradient(180deg,rgba(18,200,180,.5),rgba(18,200,180,.05));
}
.step-num{
  width:40px;height:40px;flex:0 0 40px;border-radius:50%;
  border:1.5px solid var(--brand);color:var(--brand-l);
  display:grid;place-items:center;font-size:14px;font-weight:700;
  font-family:Inter,system-ui,sans-serif;
}
.step-body h3{font-size:18px;margin-bottom:6px}
.step-body p{font-size:14px;color:var(--text-2)}
.device-frame{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--ink-700);position:relative;box-shadow:var(--sh-2)}
.device-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.device-frame::after{content:"";position:absolute;left:0;right:0;bottom:0;height:45%;background:linear-gradient(180deg,transparent,rgba(7,12,20,.88))}
.device-caption{position:absolute;left:22px;right:22px;bottom:20px;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:16px}
.device-caption span{font-size:13.5px;color:var(--text-2)}
.device-caption strong{display:block;font-size:16px;color:var(--text-1)}

/* ============ stats / reviews ============ */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:40px}
.stat-item{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 18px;text-align:center;transition:border-color 180ms ease,transform 180ms ease;
}
.stat-item:hover{border-color:rgba(255,176,32,.35);transform:translateY(-3px)}
.stat-num{font-size:32px;font-weight:800;color:var(--accent-2);line-height:1.2}
.stat-label{font-size:12.5px;color:var(--text-3);margin-top:6px;letter-spacing:.04em}
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;transition:transform 180ms ease,border-color 180ms ease;
}
.review-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.35)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 38px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(18,200,180,.3),rgba(108,77,246,.35));
  font-size:14px;color:var(--text-1);font-weight:700;
}
.review-name{font-size:14.5px;font-weight:600}
.review-stars{margin-left:auto;color:var(--accent-2);font-size:12px;letter-spacing:2px}
.review-card p{font-size:14.5px;color:var(--text-2)}
.partner-bar{
  margin-top:36px;padding:20px 24px;border-radius:var(--r-md);
  border:1px dashed var(--line);display:flex;flex-wrap:wrap;align-items:center;gap:14px 30px;justify-content:center;
}
.partner-bar span{font-size:14px;color:var(--text-2);opacity:.55;transition:opacity 180ms ease,color 180ms ease;font-weight:600;letter-spacing:.04em}
.partner-bar span:hover{opacity:1;color:var(--brand-l)}

/* ============ channel cards ============ */
.channel-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:20px}
.channel-card{
  display:block;background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 20px;height:100%;
  transition:transform 180ms ease,border-color 180ms ease,box-shadow 180ms ease;
}
.channel-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.42);box-shadow:var(--sh-2)}
.channel-idx{font-family:Inter,system-ui,sans-serif;font-size:12px;font-weight:700;color:var(--violet);letter-spacing:.16em}
.channel-card h3{font-size:17px;margin:12px 0 8px}
.channel-card p{font-size:13.5px;color:var(--text-2);line-height:1.7;min-height:66px}
.channel-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--brand-l);margin-top:10px;font-weight:600}
.channel-card:hover .channel-more i{transform:translateX(3px)}
.channel-more i{transition:transform 180ms ease;font-size:12px}

/* ============ news (light) ============ */
.news-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:#fff;border:1px solid rgba(22,32,43,.08);border-radius:16px;
  box-shadow:0 4px 16px rgba(22,32,43,.06);
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:0 16px 40px -16px rgba(22,32,43,.3);border-color:rgba(18,200,180,.4)}
.news-thumb{position:relative;display:block;overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 300ms ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.badge-tag{
  position:absolute;left:12px;top:12px;z-index:2;
  padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600;
  background:rgba(18,200,180,.14);color:#0E9E92;backdrop-filter:blur(6px);
}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1 1 auto}
.news-title{font-size:18px;line-height:1.5;margin-bottom:10px;color:#16202B}
.news-title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--brand-d)}
.news-desc{
  font-size:14px;color:#5A6A78;line-height:1.7;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:12.5px;color:#8494A2;border-top:1px solid rgba(22,32,43,.07);padding-top:14px;
}
.news-meta i{color:var(--brand-d);font-size:12px;transition:transform 180ms ease}
.news-card:hover .news-meta i{transform:translateX(3px)}
.empty-state{
  max-width:420px;margin:0 auto;text-align:center;padding:48px 20px;
  border:1px dashed rgba(22,32,43,.16);border-radius:16px;background:rgba(255,255,255,.7);
}
.empty-state i{font-size:28px;color:var(--brand-d);margin-bottom:14px;display:block}
.empty-state p{font-size:15px;color:#5A6A78;margin-bottom:16px}

/* ============ faq ============ */
.faq-acc .accordion-item{
  background:#fff;border:1px solid rgba(22,32,43,.09);
  border-radius:14px;margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-button{
  position:relative;width:100%;background:#fff;color:#16202B;
  font-size:16px;font-weight:600;line-height:1.6;
  padding:20px 56px 20px 22px;box-shadow:none;border:0;
  transition:color 180ms ease,background 180ms ease;
}
.faq-acc .accordion-button:not(.collapsed){
  color:#0E9E92;background:#fff;box-shadow:inset 3px 0 0 0 var(--brand);
}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq-acc .accordion-button::after{display:none}
.faq-acc .accordion-button::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:21px;font-weight:400;color:#0E9E92;line-height:1;
}
.faq-acc .accordion-button:not(.collapsed)::before{content:"\2212"}
.faq-acc .accordion-body{font-size:14.8px;color:#4A5A68;line-height:1.85;padding:0 22px 22px;background:#fff}

/* ============ cta ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:56px 48px;background:linear-gradient(120deg,rgba(18,200,180,.16),rgba(108,77,246,.18));
  border:1px solid rgba(95,227,214,.22);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,61,.28),transparent 70%);
}
.cta-band-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px}

/* ============ footer ============ */
.site-footer{
  background:var(--ink-800);
  border-top:1px solid var(--line);
  padding:72px 0 72px;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.5fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:14px}
.footer-contact{font-size:13.5px;color:var(--text-3);line-height:1.9}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1)}
.footer-col a{display:block;font-size:14px;color:var(--text-2);padding:6px 0}
.footer-col a:hover{color:var(--brand-l);transform:translateX(2px)}
.footer-sub p{font-size:14px;color:var(--text-2);margin-bottom:16px;line-height:1.8}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 180px;height:44px;border-radius:10px;padding:0 14px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-1);font-size:14.5px;
  transition:border-color 180ms ease,box-shadow 180ms ease;
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,200,180,.18)}
.sub-hint{font-size:12.5px;color:var(--text-3);margin-top:12px}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a:hover{color:var(--brand-l)}

/* ============ fixed cta ============ */
.fixed-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  display:flex;align-items:center;gap:14px;max-width:320px;
  padding:12px 14px 12px 20px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.11);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
}
.fixed-cta-text{font-size:13.5px;color:var(--text-2);white-space:nowrap}

/* ============ responsive ============ */
@media (max-width:1199.98px){
  .channel-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-sub{grid-column:1 / -1}
}
@media (max-width:991.98px){
  .nav-chips{display:none}
  .nav-toggle{display:grid;place-items:center}
  .header-cta .btn-cta{display:none}
  .section{padding:64px 0}
  .hero{padding:72px 0 64px}
  .feature-grid{grid-template-columns:1fr}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:40px 26px}
  .device-caption{position:static;padding:16px 18px;background:var(--ink-700)}
  .device-frame::after{display:none}
}
@media (max-width:767.98px){
  body{padding-top:56px}
  .site-header{height:56px}
  .mobile-drawer{inset:56px 0 auto 0}
  .brand-text{font-size:15.5px}
  .review-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand,.footer-sub{grid-column:1 / -1}
  .fixed-cta{
    left:0;right:0;bottom:0;max-width:none;height:60px;border-radius:0;
    padding:0 16px;justify-content:space-between;gap:12px;
  }
  .site-footer{padding-bottom:calc(72px + 60px)}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:575.98px){
  .container-xl{padding:0 16px}
  .header-inner{padding:0 14px;gap:12px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .stat-bar{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --ink-900:#070C14;
  --ink-800:#0C1420;
  --ink-700:#131D2B;
  --ink-600:#1C2836;
  --brand:#12C8B4;
  --brand-d:#0E9E92;
  --brand-l:#5FE3D6;
  --violet:#6C4DF6;
  --accent:#FF7A3D;
  --accent-2:#FFB020;
  --text-1:#E8EFF6;
  --text-2:#9FB0C0;
  --text-3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(5,10,18,.35);
  --sh-2:0 14px 40px -12px rgba(5,10,18,.6);
  --success:#35D07F;
  --warn:#FFB020;
  --danger:#FF5C6C;
  --info:#4DA6FF;
  --ease:180ms ease;
  --bs-primary:#12C8B4;
  --bs-body-bg:#070C14;
  --bs-body-color:#E8EFF6;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#5FE3D6;
  --bs-link-hover-color:#12C8B4;
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--ink-900);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-l);text-decoration:none;transition:color var(--ease),transform var(--ease)}
a:hover{color:var(--brand)}
button,input,textarea,select{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.3px}
p{margin:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.container-wide{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
.num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(12,20,32,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),background var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(9,15,25,.94)}
.header-inner{
  max-width:1280px;margin:0 auto;padding:0 20px;
  height:68px;display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-d));
  color:#04211F;font-size:16px;
  box-shadow:0 6px 18px -8px rgba(18,200,180,.7);
}
.brand-text{font-weight:700;font-size:17px;letter-spacing:-.2px;white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:4px;
  padding:4px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  margin-left:8px;flex:1;min-width:0;overflow:hidden;
}
.chip{
  padding:8px 14px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);white-space:nowrap;
  border:1px solid transparent;transition:all var(--ease);
}
.chip:hover{color:var(--text-1);border-color:rgba(255,255,255,.18)}
.chip.active{
  background:linear-gradient(135deg,var(--brand),var(--brand-d));
  color:#04211F;font-weight:700;border-color:transparent;
}
.header-cta{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-1);
  align-items:center;justify-content:center;cursor:pointer;transition:all var(--ease);
}
.nav-toggle:hover{border-color:rgba(18,200,180,.5);color:var(--brand-l)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:10px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all var(--ease);
  white-space:nowrap;
}
.btn-cta{
  background:linear-gradient(135deg,#FF8B52,var(--accent));
  color:#fff;
  box-shadow:0 0 0 1px rgba(255,122,61,.45),0 10px 26px -8px rgba(255,122,61,.55);
}
.btn-cta:hover{
  color:#fff;transform:translateY(-1px);filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(255,122,61,.6),0 12px 32px -6px rgba(255,122,61,.7);
}
.btn-cta:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;border-color:rgba(18,200,180,.55);color:var(--brand-l);
}
.btn-ghost:hover{background:rgba(18,200,180,.12);color:var(--brand-l);transform:translateY(-1px)}
.btn-soft{background:var(--ink-600);color:var(--text-1);border-color:var(--line)}
.btn-soft:hover{background:var(--ink-700);color:var(--brand-l);border-color:rgba(18,200,180,.4)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-l);
}
.btn-link-arrow i{transition:transform var(--ease)}
.btn-link-arrow:hover i{transform:translateX(3px)}

/* ============ article ============ */
main{display:block}
.crumb-bar{background:var(--ink-800);border-bottom:1px solid var(--line);padding:18px 0}
.crumb{
  display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;
  list-style:none;margin:0;padding:8px 16px;border-radius:var(--r-pill);
  background:var(--ink-700);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand-l)}
.crumb .sep{color:var(--text-3)}
.crumb .cur{color:var(--text-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-wrap{padding:48px 0 80px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;align-items:start}
.article-main{min-width:0}
.article-head{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px 36px;box-shadow:var(--sh-1);
}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:6px;font-size:12px;font-weight:600;
  background:rgba(18,200,180,.12);color:var(--brand-l);
}
.article-title{
  font-size:44px;line-height:1.28;font-weight:800;letter-spacing:-.5px;
  margin:18px 0 20px;color:#fff;
}
.article-meta{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--brand)}

.reading{max-width:820px;margin:0 auto}
.article-body{
  margin-top:36px;font-size:16px;line-height:1.9;color:var(--text-1);
  word-break:break-word;
}
.article-body p{margin:0 0 18px}
.article-body h2{
  position:relative;font-size:26px;font-weight:700;color:#fff;
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;width:3px;height:18px;
  border-radius:2px;background:linear-gradient(180deg,var(--brand),var(--brand-d));
}
.article-body h3{font-size:19px;font-weight:700;color:#fff;margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:700;color:var(--text-1);margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body li{margin-bottom:8px}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-variant-numeric:tabular-nums}
.article-body a{color:var(--brand-l);border-bottom:1px solid rgba(95,227,214,.35)}
.article-body a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.article-body strong{color:#fff}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:var(--ink-700);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:24px auto;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body code{
  background:var(--ink-600);color:var(--brand-l);padding:2px 6px;border-radius:6px;font-size:14px;
}
.article-body pre{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:transparent;color:var(--text-1);padding:0}
.article-body .table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:var(--r-md)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:480px}
.article-body th{
  background:rgba(18,200,180,.12);color:var(--brand-l);font-weight:600;text-align:left;
  padding:12px 16px;white-space:nowrap;
}
.article-body td{padding:12px 16px;border-top:1px solid var(--line);color:var(--text-2)}
.article-body tbody tr:nth-child(even) td{background:rgba(255,255,255,.02)}

.empty-state{
  margin-top:36px;padding:56px 24px;text-align:center;
  background:var(--ink-800);border:1px dashed rgba(255,255,255,.14);border-radius:var(--r-lg);
}
.empty-state .ico{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;font-size:22px;
  background:var(--ink-700);color:var(--text-3);
}
.empty-state h2{font-size:20px;color:var(--text-1);margin-bottom:10px}
.empty-state p{font-size:14px;color:var(--text-3);margin-bottom:22px}

.tag-row{
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
}
.tag-row .lbl{font-size:13px;color:var(--text-3)}
.tag{
  padding:6px 12px;border-radius:6px;font-size:12px;
  background:rgba(108,77,246,.12);color:#B7A6FF;transition:all var(--ease);
}
.tag:hover{background:rgba(108,77,246,.22);color:#D6CBFF}
.tag.brand{background:rgba(18,200,180,.12);color:var(--brand-l)}
.tag.brand:hover{background:rgba(18,200,180,.22)}

.block-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin:56px 0 22px;
}
.block-title h2{font-size:22px;color:#fff}
.block-title h2 span{color:var(--brand);margin-right:8px;font-size:18px}

.pager-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.pager-card{
  display:block;padding:20px 22px;background:var(--ink-700);
  border:1px solid var(--line);border-radius:var(--r-md);transition:all var(--ease);
}
.pager-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.45);box-shadow:var(--sh-2)}
.pager-card .dir{font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:6px;margin-bottom:8px}
.pager-card .txt{font-size:15px;font-weight:600;color:var(--text-1);display:block}
.pager-card:hover .txt{color:var(--brand-l)}

.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:16px;
  overflow:hidden;display:flex;flex-direction:column;transition:all var(--ease);
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.45);box-shadow:var(--sh-2)}
.rel-card .media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-600)}
.rel-card .media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms ease}
.rel-card:hover .media img{transform:scale(1.04)}
.rel-card .media .badge-cat{position:absolute;left:12px;top:12px;background:rgba(7,12,20,.78);backdrop-filter:blur(6px)}
.rel-card .body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card h3{font-size:17px;line-height:1.5;color:var(--text-1)}
.rel-card p{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .foot{margin-top:auto;font-size:12px;color:var(--text-3);display:flex;align-items:center;justify-content:space-between}

.back-row{margin-top:34px}

/* ============ sidebar ============ */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 20px;
}
.side-card h3{font-size:16px;color:#fff;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--brand);font-size:14px}
.side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.side-list a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:14px;color:var(--text-2);transition:all var(--ease);
}
.side-list a:hover{background:var(--ink-700);color:var(--brand-l);transform:translateX(2px)}
.side-list a i{font-size:11px;color:var(--brand);opacity:.8}
.side-tip{
  background:linear-gradient(150deg,rgba(18,200,180,.12),rgba(108,77,246,.10));
  border:1px solid rgba(18,200,180,.22);border-radius:var(--r-md);padding:20px;
}
.side-tip h3{font-size:15px;color:#fff;margin-bottom:10px}
.side-tip p{font-size:13.5px;color:var(--text-2);line-height:1.75;margin-bottom:14px}

/* ============ faq ============ */
.faq-section{margin-top:64px}
.faq-item{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;
}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text-1);
  cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-item[open]{border-color:rgba(18,200,180,.45)}
.faq-item[open] .faq-q{color:var(--brand-l);position:relative}
.faq-item[open] .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:2px;background:var(--brand);
}
.faq-q .sign{
  width:24px;height:24px;flex-shrink:0;border-radius:8px;display:flex;
  align-items:center;justify-content:center;background:var(--ink-600);
  color:var(--brand-l);font-size:12px;transition:all var(--ease);
}
.faq-a{padding:0 22px 20px;font-size:14.5px;color:var(--text-2);line-height:1.85}

/* ============ cta band ============ */
.cta-band{
  background:linear-gradient(135deg,rgba(18,200,180,.16),rgba(108,77,246,.14));
  border:1px solid rgba(18,200,180,.22);border-radius:var(--r-lg);
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;margin-top:72px;
}
.cta-band h2{font-size:28px;color:#fff;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ footer ============ */
.site-footer{
  margin-top:96px;background:var(--ink-800);border-top:1px solid var(--line);
  padding:64px 0 72px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;
}
.footer-brand p{font-size:14px;color:var(--text-2);margin:18px 0 16px;line-height:1.8;max-width:320px}
.footer-contact{font-size:13.5px;color:var(--text-3);line-height:1.9}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-col a{
  display:block;font-size:14px;color:var(--text-2);padding:5px 0;transition:all var(--ease);
}
.footer-col a:hover{color:var(--brand-l);transform:translateX(2px)}
.footer-sub p{font-size:13.5px;color:var(--text-2);line-height:1.8;margin-bottom:16px}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:10px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-1);
  transition:all var(--ease);
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,200,180,.18)}
.sub-hint{font-size:12px;color:var(--text-3);margin-top:12px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand-l)}

/* ============ dock ============ */
.dock-bar{
  position:fixed;right:24px;bottom:24px;z-index:900;
  width:300px;padding:14px 16px;border-radius:var(--r-md);
  display:flex;align-items:center;gap:12px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
}
.dock-bar .txt{font-size:13.5px;color:var(--text-1);line-height:1.5;flex:1}

/* ============ responsive ============ */
@media (max-width:1199px){
  .article-grid{grid-template-columns:minmax(0,1fr) 260px;gap:28px}
  .article-title{font-size:38px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-sub{grid-column:1 / -1}
}
@media (max-width:991px){
  .nav-chips{
    position:fixed;left:16px;right:16px;top:76px;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:14px;border-radius:var(--r-lg);
    background:rgba(12,20,32,.98);border:1px solid var(--line);
    max-height:calc(100vh - 120px);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:all var(--ease);margin:0;
  }
  .nav-chips.open{opacity:1;visibility:visible;transform:translateY(0)}
  .chip{padding:12px 16px;font-size:15px}
  .nav-toggle{display:flex}
  .header-cta .btn-cta{display:none}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .sidebar{position:static}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-head{padding:26px 24px}
  .article-title{font-size:32px}
  .cta-band{padding:32px 24px}
  .cta-band h2{font-size:23px}
}
@media (max-width:767px){
  .header-inner{height:56px;gap:12px}
  .brand-text{font-size:15px}
  .crumb-bar{padding:14px 0}
  .article-wrap{padding:32px 0 64px}
  .article-title{font-size:29px;letter-spacing:-.2px}
  .article-body{font-size:15.5px}
  .article-body h2{font-size:22px;margin-top:32px}
  .article-body h3{font-size:18px}
  .pager-grid{grid-template-columns:minmax(0,1fr)}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .dock-bar{
    right:0;left:0;bottom:0;width:100%;border-radius:0;
    padding:10px 16px;height:60px;border-left:0;border-right:0;border-bottom:0;
  }
  .site-footer{padding-bottom:110px}
}
@media (max-width:575px){
  .container,.container-wide{padding:0 16px}
  .header-inner{padding:0 16px}
  .article-head{padding:22px 18px}
  .article-title{font-size:26px}
  .btn{height:46px;padding:0 16px}
  .btn-sm{height:40px}
}

/* roulang page: category1 */
:root{
  --ink-900:#070C14;
  --ink-800:#0C1420;
  --ink-700:#131D2B;
  --ink-600:#1C2836;
  --brand:#12C8B4;
  --brand-d:#0E9E92;
  --brand-l:#5FE3D6;
  --violet:#6C4DF6;
  --accent:#FF7A3D;
  --accent-2:#FFB020;
  --text-1:#E8EFF6;
  --text-2:#9FB0C0;
  --text-3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --light:#F4F7F9;
  --light-2:#E7EDF1;
  --light-text:#16202B;
  --light-sub:#4A5B6B;
  --ok:#35D07F;
  --warn:#FFB020;
  --err:#FF5C6C;
  --info:#4DA6FF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(5,10,18,.35);
  --sh-2:0 14px 40px -12px rgba(5,10,18,.6);
  --t:180ms ease;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:68px;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background:var(--ink-900);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t),opacity var(--t)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.num{font-family:"Inter",var(--font-cn);font-variant-numeric:tabular-nums}
.container-xl{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.container-wide{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
section[id]{scroll-margin-top:96px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;height:68px;z-index:80;
  background:rgba(7,12,20,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),background var(--t);
}
.site-header.scrolled{border-bottom-color:var(--line);background:rgba(7,12,20,.92)}
.header-inner{
  max-width:1280px;height:100%;margin:0 auto;padding:0 20px;
  display:flex;align-items:center;gap:24px;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--brand),var(--violet));
  color:#04211F;font-size:16px;box-shadow:0 6px 18px -8px rgba(18,200,180,.8);
}
.brand-text{font-weight:700;font-size:17px;letter-spacing:-.2px;color:var(--text-1);white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:4px;padding:4px;
  border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  overflow-x:auto;scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-block;padding:8px 15px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);white-space:nowrap;
  border:1px solid transparent;transition:all var(--t);
}
.chip:hover{color:var(--text-1);border-color:rgba(255,255,255,.18);background:rgba(255,255,255,.04)}
.chip.active{
  background:linear-gradient(135deg,var(--brand),var(--brand-d));
  color:#04211F;font-weight:700;
  box-shadow:0 6px 18px -10px rgba(18,200,180,.9);
}
.header-cta{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--ink-700);color:var(--text-1);
  font-size:17px;cursor:pointer;transition:all var(--t);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform var(--t),filter var(--t),box-shadow var(--t),border-color var(--t),color var(--t),background var(--t);
}
.btn-cta{
  background:linear-gradient(135deg,var(--accent),#FF9A5C);
  color:#25130A;
  box-shadow:0 0 0 1px rgba(255,122,61,.45),0 10px 26px -8px rgba(255,122,61,.55);
}
.btn-cta:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,122,61,.5),0 14px 32px -6px rgba(255,122,61,.6)}
.btn-cta:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand-l)}
.btn-ghost:hover{background:rgba(18,200,180,.12);transform:translateY(-1px);color:var(--brand-l)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-l);font-size:14px;font-weight:600}
.link-arrow i{transition:transform var(--t)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:72px 0 88px;
  background-image:linear-gradient(180deg,rgba(7,12,20,.86),rgba(7,12,20,.95)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;background-repeat:no-repeat;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.crumb{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:13px;color:var(--text-2);margin-bottom:22px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand-l)}
.crumb .sep{color:var(--text-3)}
.crumb .cur{color:var(--text-3)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  padding:6px 14px;border-radius:6px;font-size:12px;font-weight:600;
  color:var(--brand-l);background:rgba(18,200,180,.12);
}
.hero h1{
  font-size:46px;line-height:1.22;font-weight:800;letter-spacing:-.5px;
  margin-bottom:18px;
}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--brand-l),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--text-2);margin-bottom:14px}
.hero-desc{font-size:15.5px;color:var(--text-2);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px}
.trust-chip{display:inline-flex;align-items:center;gap:7px;padding:7px 13px;border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(255,255,255,.03);font-size:13px;color:var(--text-2)}
.trust-chip i{color:var(--brand);font-size:12px}
.hero-card{
  border-radius:var(--r-lg);padding:14px;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
}
.hero-card .shot{position:relative;width:100%;aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;background:var(--ink-700)}
.hero-card .shot img{width:100%;height:100%;object-fit:cover}
.hero-card .shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.14),transparent 42%)}
.hero-card .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 6px 4px}
.hero-card .meta strong{font-size:15px}
.hero-card .meta span{font-size:12.5px;color:var(--text-3)}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-light{background:var(--light);color:var(--light-text)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:31px;font-weight:700;letter-spacing:-.3px;margin-bottom:14px}
.section-head .eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:1px;color:var(--brand);margin-bottom:12px;text-transform:uppercase}
.section-head p{color:var(--text-2);font-size:15.5px}
.section-light .section-head p{color:var(--light-sub)}
.section-light .section-head .eyebrow{color:var(--brand-d)}
.section-head.row-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;max-width:none;flex-wrap:wrap}

/* ---------- alternating flow ---------- */
.flow-item{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:34px 0;border-bottom:1px solid var(--line)}
.flow-item:last-child{border-bottom:0}
.flow-item.reverse .flow-media{order:2}
.flow-media{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--ink-700);box-shadow:var(--sh-1);border:1px solid var(--line)}
.flow-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms ease}
.flow-item:hover .flow-media img{transform:scale(1.03)}
.flow-body .idx{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;
  border:1.5px solid var(--brand);color:var(--brand-l);font-weight:700;font-size:14px;margin-bottom:16px;
  font-family:"Inter",var(--font-cn);
}
.flow-body h3{font-size:21px;font-weight:700;margin-bottom:12px}
.flow-body p{color:var(--text-2);font-size:15.5px;margin-bottom:14px}
.tick-list{display:grid;gap:9px}
.tick-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.tick-list li i{color:var(--brand);font-size:12px;margin-top:6px}

/* ---------- asymmetric cards ---------- */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:auto auto;gap:22px}
.scene-main{
  grid-row:span 2;
  border-radius:var(--r-lg);padding:34px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.1);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  display:flex;flex-direction:column;justify-content:space-between;gap:22px;
}
.scene-main .icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:rgba(18,200,180,.14);color:var(--brand-l);font-size:22px}
.scene-main h3{font-size:22px;font-weight:700;margin-bottom:12px}
.scene-main p{color:var(--text-2);font-size:15px}
.scene-main ul{display:grid;gap:10px;margin-top:6px}
.scene-main ul li{font-size:14.5px;color:var(--text-2);display:flex;gap:10px}
.scene-main ul li i{color:var(--accent-2);font-size:12px;margin-top:6px}
.scene-small{
  border-radius:var(--r-md);padding:24px;background:var(--ink-700);border:1px solid var(--line);
  box-shadow:var(--sh-1);transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.scene-small:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.4);box-shadow:var(--sh-2)}
.scene-small h3{font-size:18px;font-weight:700;margin-bottom:10px}
.scene-small p{font-size:14.5px;color:var(--text-2)}
.badge-soft{display:inline-block;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600;background:rgba(18,200,180,.12);color:var(--brand-l);margin-bottom:12px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.step{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-md);padding:24px 20px;transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.step:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.4);box-shadow:var(--sh-2)}
.step .n{font-family:"Inter",var(--font-cn);font-size:26px;font-weight:800;color:var(--accent-2);letter-spacing:-1px;margin-bottom:10px;display:block}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:44px}
.stat{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-md);padding:26px 22px}
.stat b{display:block;font-family:"Inter",var(--font-cn);font-size:32px;font-weight:800;color:var(--accent-2);line-height:1.1;margin-bottom:8px}
.stat span{font-size:12.5px;color:var(--text-3)}
.stat p{font-size:14px;color:var(--text-2);margin-top:10px}
.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.note{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-md);padding:24px;display:flex;gap:14px}
.note i{color:var(--brand);font-size:18px;margin-top:4px}
.note h3{font-size:16px;font-weight:700;margin-bottom:8px}
.note p{font-size:14px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--light-2);border-radius:var(--r-md) !important;
  margin-bottom:14px;overflow:hidden;box-shadow:0 2px 10px rgba(22,32,43,.05);
}
.faq-acc .accordion-button{
  background:#fff;color:var(--light-text);font-size:16.5px;font-weight:700;
  padding:20px 56px 20px 22px;border:0;box-shadow:none;position:relative;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-d);background:#fff;box-shadow:none}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--brand)}
.faq-acc .accordion-button::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;background-image:none;font-size:20px;font-weight:700;color:var(--brand-d);
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−"}
.faq-acc .accordion-button:focus{outline:2px solid var(--brand-d);outline-offset:-2px}
.faq-acc .accordion-body{padding:0 22px 22px;font-size:15px;color:var(--light-sub);line-height:1.85}

/* ---------- CTA band ---------- */
.cta-band{
  border-radius:var(--r-lg);padding:52px 44px;
  background:linear-gradient(120deg,rgba(18,200,180,.18),rgba(108,77,246,.22)),var(--ink-700);
  border:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:27px;font-weight:700;margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:560px}

/* ---------- related cards ---------- */
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rel-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:16px;overflow:hidden;
  display:flex;flex-direction:column;transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.4);box-shadow:var(--sh-2)}
.rel-card .thumb{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--ink-600)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover}
.rel-card .tag{position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600;background:rgba(18,200,180,.9);color:#04211F}
.rel-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card h3{font-size:17.5px;font-weight:700;line-height:1.5}
.rel-card p{font-size:14px;color:var(--text-2);flex:1}

/* ---------- floating CTA ---------- */
.float-cta{
  position:fixed;right:22px;bottom:22px;z-index:70;
  display:flex;align-items:center;gap:14px;
  max-width:320px;padding:12px 14px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.12);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
}
.float-cta span{font-size:13.5px;color:var(--text-2);white-space:nowrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-800);border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:52px}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin:16px 0 18px;max-width:320px}
.footer-contact{font-size:13.5px;color:var(--text-3);line-height:1.9}
.footer-col h4,.footer-sub h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text-1)}
.footer-col a{display:block;font-size:14.5px;color:var(--text-2);margin-bottom:11px;transition:color var(--t),transform var(--t)}
.footer-col a:hover{color:var(--brand-l);transform:translateX(2px)}
.footer-sub p{font-size:14px;color:var(--text-2);margin-bottom:14px}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:10px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-1);font-size:14px;
  transition:border-color var(--t),box-shadow var(--t);
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,200,180,.18)}
.sub-hint{font-size:12.5px;color:var(--text-3);margin-top:12px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 72px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand-l)}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .steps{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:992px){
  body{padding-top:56px}
  .site-header{height:56px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-chips{
    position:fixed;top:56px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;padding:16px 20px 20px;
    border-radius:0;border-left:0;border-right:0;border-top:0;
    background:rgba(9,15,24,.97);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity var(--t),transform var(--t);
    max-height:calc(100vh - 56px);overflow-y:auto;
  }
  .nav-chips.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .chip{padding:12px 16px;border-radius:12px;font-size:15px;border-color:var(--line)}
  .hero{padding:52px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:34px}
  .section{padding:64px 0}
  .section-head{margin-bottom:34px}
  .flow-item{grid-template-columns:1fr;gap:24px;padding:28px 0}
  .flow-item.reverse .flow-media{order:0}
  .scene-grid{grid-template-columns:1fr}
  .scene-main{grid-row:auto}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .note-grid{grid-template-columns:1fr}
  .related{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:38px 26px}
}
@media (max-width:640px){
  .header-cta .btn-cta{display:none}
  .brand-text{font-size:15.5px}
  .hero h1{font-size:30px}
  .section-head h2{font-size:23px}
  .section{padding:56px 0}
  .steps{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .related{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:22px}
  .btn{height:48px}
  .btn-sm{height:40px}
  .float-cta{
    left:0;right:0;bottom:0;max-width:none;border-radius:0;
    padding:10px 16px;justify-content:space-between;
  }
  .site-footer{padding-bottom:0}
  .footer-bottom{padding-bottom:88px}
}

/* roulang page: category2 */
:root{
  --ink-900:#070C14;
  --ink-800:#0C1420;
  --ink-700:#131D2B;
  --ink-600:#1C2836;
  --brand:#12C8B4;
  --brand-d:#0E9E92;
  --brand-l:#5FE3D6;
  --violet:#6C4DF6;
  --accent:#FF7A3D;
  --accent-2:#FFB020;
  --text-1:#E8EFF6;
  --text-2:#9FB0C0;
  --text-3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --light-bg:#F4F7F9;
  --light-text:#16202B;
  --light-text-2:#4B5C6B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(5,10,18,.35);
  --sh-2:0 14px 40px -12px rgba(5,10,18,.6);
  --glow:0 0 0 1px rgba(255,122,61,.45),0 10px 26px -8px rgba(255,122,61,.55);
  --glow-h:0 0 0 1px rgba(255,122,61,.55),0 14px 32px -6px rgba(255,122,61,.6);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  padding-bottom:72px;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.3px}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color 180ms ease,background 180ms ease,border-color 180ms ease,transform 180ms ease}
a:hover{color:var(--brand-l)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container-xl{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-family:Inter,"HarmonyOS Sans SC",system-ui,sans-serif;font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:linear-gradient(160deg,rgba(12,20,32,.92),rgba(7,12,20,.86));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color 180ms ease,box-shadow 180ms ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 8px 28px -18px rgba(0,0,0,.9)}
.header-inner{
  max-width:1280px;margin:0 auto;padding:0 20px;
  height:68px;display:flex;align-items:center;gap:28px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--violet));
  color:#04121A;font-size:15px;
  box-shadow:0 6px 18px -8px rgba(18,200,180,.8);
}
.brand-text{font-weight:700;font-size:17px;letter-spacing:-.2px;white-space:nowrap}
.nav-chips{
  flex:1 1 auto;display:flex;align-items:center;gap:4px;
  padding:4px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  overflow-x:auto;scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:7px 14px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);white-space:nowrap;
  border:1px solid transparent;transition:all 180ms ease;
}
.chip:hover{color:var(--text-1);border-color:rgba(255,255,255,.18)}
.chip.active{
  background:linear-gradient(135deg,var(--brand),var(--brand-l));
  color:#062019;font-weight:600;
}
.header-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text-1);font-size:16px;cursor:pointer;
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all 180ms ease;
}
.btn-cta{
  background:linear-gradient(135deg,var(--accent),#FF9A5F);
  color:#22100A;box-shadow:var(--glow);
}
.btn-cta:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:var(--glow-h);color:#22100A}
.btn-cta:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(18,200,180,.55);color:var(--brand-l)}
.btn-ghost:hover{background:rgba(18,200,180,.12);color:var(--brand-l);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-l);
  font-size:14px;font-weight:600;background:none;border:0;padding:6px 0;cursor:pointer;
}
.btn-text i{transition:transform 180ms ease}
.btn-text:hover i{transform:translateX(3px)}

/* ---------- 面包屑 ---------- */
.crumbs{padding:22px 0 0}
.crumb-list{
  display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.crumb-list .sep{color:var(--text-3)}
.crumb-list .current{color:var(--text-3)}

/* ---------- Hero ---------- */
.page-hero{position:relative;padding:44px 0 64px;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,.86),rgba(7,12,20,.96) 62%,var(--ink-900));
}
.page-hero .container-xl{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(18,200,180,.12);color:var(--brand-l);
  font-size:13px;border:1px solid rgba(18,200,180,.22);
}
.page-hero h1{
  font-size:48px;font-weight:800;letter-spacing:-.5px;line-height:1.24;
  margin:20px 0 16px;max-width:14em;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand-l),var(--brand) 55%,var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;color:var(--text-2);max-width:40em}
.hero-sub{margin-top:10px;font-size:15px;color:var(--text-3);max-width:44em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.anchor-chips a{
  padding:8px 16px;border-radius:var(--r-pill);font-size:13.5px;
  color:var(--text-2);background:rgba(255,255,255,.04);
  border:1px solid var(--line);
}
.anchor-chips a:hover{color:var(--brand-l);border-color:rgba(18,200,180,.4);background:rgba(18,200,180,.08)}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0}
.section--light{background:var(--light-bg);color:var(--light-text)}
.section--light .section-head p{color:var(--light-text-2)}
.section--band{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:2px;font-weight:700;
  color:var(--brand);margin-bottom:12px;
}
.section--light .eyebrow{color:var(--brand-d)}
.section-head h2{font-size:31px;line-height:1.35}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15.5px}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;flex-wrap:wrap;
}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:8px}
.timeline::before{
  content:"";position:absolute;left:23px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,rgba(18,200,180,.9),rgba(108,77,246,.5) 55%,rgba(255,255,255,.06));
}
.tl-item{position:relative;padding:0 0 34px 76px}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--ink-800);border:2px solid rgba(18,200,180,.55);
  color:var(--brand-l);font-size:15px;font-weight:700;
  font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px rgba(7,12,20,1);
}
.tl-body{
  background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform 180ms ease,border-color 180ms ease,box-shadow 180ms ease;
}
.tl-body:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.32);box-shadow:var(--sh-2)}
.tl-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.tl-top h3{font-size:20px}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600;
  background:rgba(18,200,180,.12);color:var(--brand-l);
}
.badge-soft.violet{background:rgba(108,77,246,.16);color:#B9A8FF}
.badge-soft.orange{background:rgba(255,122,61,.14);color:#FFB48C}
.tl-body p{color:var(--text-2);font-size:15px}
.tl-points{margin-top:14px;display:grid;gap:8px}
.tl-points li{
  position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2);
}
.tl-points li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 3px rgba(18,200,180,.14);
}
.tl-figure{margin-top:18px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line)}
.tl-figure img{width:100%;aspect-ratio:16/7;object-fit:cover}

/* ---------- 信号对照列表 ---------- */
.signal-list{display:grid;gap:14px}
.signal-row{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr) auto;
  gap:22px;align-items:center;
  background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--r-md);padding:20px 24px;
  transition:transform 180ms ease,border-color 180ms ease,box-shadow 180ms ease;
}
.signal-row:hover{transform:translateY(-3px);border-color:rgba(255,122,61,.34);box-shadow:var(--sh-2)}
.signal-title{display:flex;align-items:center;gap:12px;font-size:16.5px;font-weight:600}
.signal-title i{color:var(--accent);font-size:16px}
.signal-desc{color:var(--text-2);font-size:14.5px}
.signal-act{font-size:13.5px;color:var(--brand-l);font-weight:600;white-space:nowrap;display:inline-flex;align-items:center;gap:6px}

/* ---------- 验证方式 Tabs ---------- */
.verify-tabs{display:flex;flex-direction:column;gap:10px}
.verify-tab{
  text-align:left;background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--r-md);padding:16px 18px;color:var(--text-2);
  cursor:pointer;transition:all 180ms ease;width:100%;
}
.verify-tab strong{display:block;font-size:16px;color:var(--text-1);margin-bottom:4px;font-weight:600}
.verify-tab span{font-size:13px;color:var(--text-3)}
.verify-tab:hover{border-color:rgba(18,200,180,.35)}
.verify-tab.active{
  background:linear-gradient(135deg,rgba(18,200,180,.16),rgba(108,77,246,.12));
  border-color:rgba(18,200,180,.55);
}
.verify-tab.active strong{color:var(--brand-l)}
.verify-panels{
  background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px;height:100%;box-shadow:var(--sh-1);
}
.verify-panels h3{font-size:21px;margin-bottom:12px}
.verify-panels p{color:var(--text-2);font-size:15px}
.verify-panels ul{margin-top:18px;display:grid;gap:10px}
.verify-panels li{
  position:relative;padding-left:24px;font-size:14.5px;color:var(--text-2);
}
.verify-panels li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:0;color:var(--brand);font-size:12px;
}

/* ---------- 数据带 ---------- */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:linear-gradient(140deg,rgba(18,200,180,.12),rgba(108,77,246,.1));
  border:1px solid rgba(18,200,180,.22);
  border-radius:var(--r-lg);padding:30px 28px;
}
.stat{text-align:left;border-left:2px solid rgba(18,200,180,.4);padding-left:16px}
.stat b{
  display:block;font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:32px;font-weight:800;color:var(--accent-2);line-height:1.1;
}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--text-2)}

.notice-card{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:0;margin-top:26px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--ink-700);
}
.notice-card img{width:100%;height:100%;min-height:260px;object-fit:cover}
.notice-body{padding:34px 32px}
.notice-body h3{font-size:22px;margin-bottom:14px}
.notice-body p{color:var(--text-2);font-size:15px}
.notice-body .btn{margin-top:22px}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{
  background:#FFFFFF;border:1px solid #E3EAEF;border-radius:var(--r-md);
  overflow:hidden;transition:border-color 180ms ease,box-shadow 180ms ease;
}
.faq-item:hover{border-color:#C7D6DF;box-shadow:0 10px 26px -18px rgba(22,32,43,.5)}
.faq-btn{
  width:100%;text-align:left;background:none;border:0;cursor:pointer;
  padding:20px 54px 20px 22px;position:relative;
  font-size:16.5px;font-weight:600;color:var(--light-text);
}
.faq-btn::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand-d);line-height:1;
}
.faq-btn:not(.collapsed)::after{content:"–"}
.faq-btn:not(.collapsed){color:var(--brand-d);box-shadow:inset 3px 0 0 var(--brand-d)}
.faq-a{padding:0 22px 22px 22px;font-size:15px;color:var(--light-text-2);line-height:1.85}

/* ---------- 相关入口三卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform 180ms ease,border-color 180ms ease,box-shadow 180ms ease;
}
.entry-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.34);box-shadow:var(--sh-2)}
.entry-thumb{aspect-ratio:16/9;overflow:hidden}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.entry-card:hover .entry-thumb img{transform:scale(1.04)}
.entry-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.entry-body h3{font-size:18px}
.entry-body p{font-size:14.5px;color:var(--text-2);flex:1}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:linear-gradient(135deg,rgba(18,200,180,.9),rgba(108,77,246,.82));
  border-radius:var(--r-lg);padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:27px;color:#04140F;max-width:22em}
.cta-band p{margin-top:10px;color:rgba(4,20,15,.78);font-size:15px;max-width:34em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-band .btn-ghost{border-color:rgba(4,20,15,.4);color:#04140F}
.cta-band .btn-ghost:hover{background:rgba(4,20,15,.12);color:#04140F}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-800);border-top:1px solid var(--line);
  padding:64px 0 72px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin:16px 0 18px;max-width:26em}
.footer-contact{font-size:13.5px;color:var(--text-3);line-height:2}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:var(--text-2);padding:5px 0}
.footer-col a:hover{color:var(--brand-l);transform:translateX(2px)}
.footer-sub p{font-size:13.5px;color:var(--text-3)}
.sub-form{display:flex;gap:10px;margin:16px 0 10px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 160px;height:38px;padding:0 14px;border-radius:9px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-1);
  font-size:14px;
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,200,180,.16)}
.sub-hint{font-size:12.5px;color:var(--text-3)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand-l)}

/* ---------- 固定转化条 ---------- */
.mobile-cta{
  position:fixed;z-index:1040;right:20px;bottom:20px;
  width:320px;max-width:calc(100vw - 40px);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px 12px 20px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(19,29,43,.92),rgba(12,20,32,.86));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--sh-2);
}
.mobile-cta span{font-size:14px;color:var(--text-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .page-hero h1{font-size:44px}
}
@media (max-width:991.98px){
  .header-inner{height:56px;gap:14px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-chips{
    position:fixed;top:56px;left:0;right:0;bottom:auto;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:18px;border-radius:0;border-left:0;border-right:0;
    background:rgba(9,15,24,.98);max-height:calc(100vh - 56px);
    overflow-y:auto;display:none;
  }
  body.nav-open .nav-chips{display:flex}
  .chip{padding:12px 16px;font-size:15px;border-radius:12px}
  .section{padding:60px 0}
  .page-hero{padding:32px 0 48px}
  .page-hero h1{font-size:34px;margin:16px 0 14px}
  .hero-lead{font-size:16px}
  .section-head h2{font-size:24px}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:18px;padding:24px 20px}
  .notice-card{grid-template-columns:1fr}
  .notice-card img{min-height:200px;aspect-ratio:16/9}
  .entry-grid{grid-template-columns:1fr;gap:18px}
  .signal-row{grid-template-columns:1fr;gap:10px}
  .signal-act{justify-self:start}
  .timeline::before{left:17px}
  .tl-item{padding-left:56px}
  .tl-node{width:36px;height:36px;font-size:13px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-band{padding:32px 24px}
  .cta-band h2{font-size:22px}
}
@media (max-width:575.98px){
  body{padding-bottom:84px;font-size:15.5px}
  .brand-text{font-size:15.5px}
  .header-cta .btn-cta{height:38px;padding:0 14px;font-size:14px}
  .page-hero h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .anchor-chips a{font-size:13px;padding:7px 13px}
  .stats-band{grid-template-columns:1fr 1fr}
  .stat b{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .verify-panels{padding:22px}
  .mobile-cta{
    left:0;right:0;bottom:0;width:auto;max-width:none;
    border-radius:0;padding:10px 16px;height:60px;
    border-left:0;border-right:0;border-bottom:0;
  }
  .notification-offset{height:60px}
}

/* roulang page: category3 */
:root{
  --ink-900:#070C14;
  --ink-800:#0C1420;
  --ink-700:#131D2B;
  --ink-600:#1C2836;
  --brand:#12C8B4;
  --brand-d:#0E9E92;
  --brand-l:#5FE3D6;
  --violet:#6C4DF6;
  --accent:#FF7A3D;
  --accent-2:#FFB020;
  --text-1:#E8EFF6;
  --text-2:#9FB0C0;
  --text-3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(5,10,18,.35);
  --sh-2:0 14px 40px -12px rgba(5,10,18,.6);
  --bs-body-bg:#070C14;
  --bs-body-color:#E8EFF6;
  --bs-primary:#12C8B4;
  --bs-link-color:#5FE3D6;
  --bs-link-hover-color:#12C8B4;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,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-1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color 180ms ease,border-color 180ms ease,background-color 180ms ease,transform 180ms ease}
button{font-family:inherit}
ul{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.num{font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ===== 布局容器 ===== */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-xl{max-width:1200px}
.sec{padding:96px 0}
.sec-dark{background:var(--ink-800)}
.sec-deep{background:var(--ink-900)}
.sec-light{background:#F4F7F9;color:#16202B}
.sec-head{max-width:680px;margin-bottom:48px}
.sec-title{font-size:31px;font-weight:700;letter-spacing:-.3px}
.sec-light .sec-title{color:#16202B}
.sec-sub{margin-top:14px;font-size:15.5px;color:var(--text-2);line-height:1.85}
.sec-light .sec-sub{color:#5A6B78}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-l);text-transform:uppercase;margin-bottom:16px;
}
.sec-light .eyebrow{color:var(--brand-d)}
.eyebrow::before{content:"";width:22px;height:2px;background:currentColor;border-radius:2px}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,12,20,.74);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color 180ms ease,background-color 180ms ease;
}
.site-header.scrolled{border-bottom-color:var(--line);background:rgba(7,12,20,.92)}
.header-inner{
  max-width:1280px;margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  color:#04140F;font-size:15px;box-shadow:0 6px 18px -8px rgba(18,200,180,.75);
}
.brand-text{font-size:16.5px;font-weight:700;letter-spacing:-.2px;color:var(--text-1);white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:4px;padding:4px;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  border-radius:var(--r-pill);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  margin-left:auto;
}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 14px;
  border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--text-2);
  white-space:nowrap;border:1px solid transparent;
}
.chip:hover{color:var(--text-1);border-color:rgba(255,255,255,.18)}
.chip.active{background:linear-gradient(135deg,var(--brand),var(--brand-l));color:#04140F;border-color:transparent}
.header-cta{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-1);
  font-size:16px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:rgba(18,200,180,.5);color:var(--brand-l)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:transform 180ms ease,box-shadow 180ms ease,filter 180ms ease,border-color 180ms ease,color 180ms ease,background-color 180ms ease;
}
.btn:active{transform:translateY(0)}
.btn-cta{
  background:linear-gradient(135deg,#FF8A50,var(--accent));
  color:#fff;
  box-shadow:0 0 0 1px rgba(255,122,61,.45),0 10px 26px -8px rgba(255,122,61,.55);
}
.btn-cta:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,122,61,.55),0 16px 32px -10px rgba(255,122,61,.65)}
.btn-ghost{
  background:transparent;border-color:rgba(18,200,180,.55);color:var(--brand-l);
}
.btn-ghost:hover{background:rgba(18,200,180,.1);border-color:var(--brand);color:#fff;transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--brand-l);
}
.link-arrow i{transition:transform 180ms ease;font-size:12px}
.link-arrow:hover i{transform:translateX(3px)}
.link-arrow:hover{color:#fff}

/* ===== 面包屑 ===== */
.crumb{
  display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);margin-bottom:26px;
}
.crumb a:hover{color:var(--brand-l)}
.crumb .sep{color:var(--text-3)}
.crumb .cur{color:var(--text-3)}

/* ===== Hero ===== */
.page-hero{
  position:relative;
  padding:72px 0 88px;
  background-image:linear-gradient(rgba(7,12,20,.86),rgba(7,12,20,.95)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,200,180,.5),transparent);
}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.page-title{
  font-size:clamp(30px,4.4vw,48px);
  font-weight:800;letter-spacing:-.5px;line-height:1.25;
  margin-bottom:18px;
}
.page-title em{font-style:normal;color:var(--brand-l)}
.page-lead{font-size:17px;color:var(--text-2);max-width:560px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.trust-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.trust-pill i{color:var(--brand-l);font-size:12px}
.hero-card{
  border-radius:var(--r-lg);overflow:hidden;position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
  padding:14px;
}
.hero-card .thumb{aspect-ratio:16/10;border-radius:14px;overflow:hidden;background:var(--ink-600)}
.hero-card .thumb img{width:100%;height:100%;object-fit:cover}
.hero-card .meta{display:flex;align-items:center;justify-content:space-between;padding:16px 6px 6px;font-size:13px;color:var(--text-2)}
.hero-card .meta strong{color:var(--brand-l);font-weight:700}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px}
.anchor-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13.5px;color:var(--text-2);
}
.anchor-chip:hover{border-color:rgba(18,200,180,.5);color:var(--brand-l);transform:translateY(-1px)}

/* ===== 筛选条 ===== */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.filter-chip{
  height:38px;padding:0 18px;border-radius:var(--r-pill);
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:all 180ms ease;
}
.filter-chip:hover{color:var(--text-1);border-color:rgba(255,255,255,.22)}
.filter-chip.is-on{background:linear-gradient(135deg,var(--brand),var(--brand-l));color:#04140F;border-color:transparent}

/* ===== 下载卡片网格 ===== */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform 180ms ease,border-color 180ms ease,box-shadow 180ms ease;
}
.dl-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.45);box-shadow:var(--sh-2)}
.dl-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-600)}
.dl-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease}
.dl-card:hover .dl-thumb img{transform:scale(1.04)}
.dl-badge{
  position:absolute;left:12px;top:12px;
  padding:4px 10px;border-radius:6px;font-size:12px;font-weight:700;
  background:rgba(18,200,180,.16);color:var(--brand-l);backdrop-filter:blur(6px);
}
.dl-badge.violet{background:rgba(108,77,246,.22);color:#BFAEFF}
.dl-badge.orange{background:rgba(255,122,61,.18);color:#FFB18A}
.dl-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto}
.dl-title{font-size:18px;font-weight:700;letter-spacing:-.2px;margin-bottom:10px}
.dl-desc{font-size:14px;color:var(--text-2);line-height:1.8;flex:1 1 auto}
.dl-meta{
  display:flex;flex-wrap:wrap;gap:8px 16px;margin:18px 0 16px;
  padding-top:14px;border-top:1px dashed rgba(255,255,255,.1);
  font-size:12.5px;color:var(--text-3);
}
.dl-meta span{display:inline-flex;align-items:center;gap:6px}
.dl-meta b{color:var(--text-2);font-weight:600}
.dl-foot{display:flex;align-items:center;justify-content:space-between;gap:12px}

/* ===== 运行环境（浅色） ===== */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.spec-item{
  background:#fff;border:1px solid #E3E9EE;border-radius:var(--r-md);
  padding:24px 22px;box-shadow:0 4px 14px rgba(16,32,43,.05);
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.spec-item:hover{transform:translateY(-3px);box-shadow:0 16px 34px -18px rgba(16,32,43,.4);border-color:#C9D9E2}
.spec-item i{font-size:18px;color:var(--brand-d);margin-bottom:14px;display:block}
.spec-num{font-size:26px;font-weight:800;color:#16202B;letter-spacing:-.5px;line-height:1.3}
.spec-num small{font-size:14px;font-weight:600;color:#5A6B78;margin-left:4px}
.spec-label{margin-top:8px;font-size:13.5px;color:#5A6B78;line-height:1.7}
.spec-note{
  margin-top:36px;background:#fff;border:1px solid #E3E9EE;border-radius:var(--r-md);
  padding:26px 28px;
}
.spec-note h3{font-size:17px;color:#16202B;margin-bottom:14px}
.spec-note li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:14.5px;color:#4A5A68;line-height:1.85;padding:7px 0;
}
.spec-note li i{color:var(--brand-d);font-size:12px;margin-top:8px}

/* ===== 安装流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 24px;position:relative;overflow:hidden;
  transition:transform 180ms ease,border-color 180ms ease;
}
.step:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.4)}
.step::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
  opacity:.7;
}
.step-idx{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  border:2px solid rgba(18,200,180,.6);color:var(--brand-l);
  font-family:"Inter",sans-serif;font-weight:800;font-size:15px;margin-bottom:18px;
}
.step h3{font-size:17.5px;margin-bottom:10px}
.step p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ===== FAQ（浅色） ===== */
.accordion{--bs-accordion-border-width:0;--bs-accordion-bg:#fff}
.accordion-item{
  background:#fff;border:1px solid #E3E9EE !important;border-radius:var(--r-md) !important;
  margin-bottom:14px;overflow:hidden;
  box-shadow:0 3px 12px rgba(16,32,43,.04);
}
.accordion-button{
  background:#fff;color:#16202B;font-size:16.5px;font-weight:700;
  padding:20px 22px;line-height:1.6;box-shadow:none !important;
  border-radius:var(--r-md) !important;
}
.accordion-button:not(.collapsed){
  background:#fff;color:var(--brand-d);
  border-left:3px solid var(--brand);
  padding-left:19px;
}
.accordion-button:focus{border-color:#E3E9EE;box-shadow:none !important}
.accordion-button::after{
  background-image:none !important;
  content:"+";
  width:26px;height:26px;flex:0 0 26px;
  display:grid;place-items:center;
  font-family:"Inter",sans-serif;font-size:20px;font-weight:700;
  color:var(--brand-d);line-height:1;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:none}
.accordion-body{
  padding:0 22px 22px;font-size:15px;color:#4A5A68;line-height:1.9;border-left:3px solid transparent;
}

/* ===== 相关入口 ===== */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform 180ms ease,border-color 180ms ease,box-shadow 180ms ease;
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.45);box-shadow:var(--sh-2)}
.rel-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--ink-600)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease}
.rel-card:hover .thumb img{transform:scale(1.04)}
.rel-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.rel-body h3{font-size:17.5px}
.rel-body p{font-size:14px;color:var(--text-2);line-height:1.8;flex:1 1 auto}

/* ===== 底部 CTA 带 ===== */
.cta-band{
  background:linear-gradient(120deg,#0B7A72,#12C8B4 62%,#3FD8C6);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,77,246,.5),transparent 68%);
}
.cta-inner{
  position:relative;z-index:2;
  padding:64px 0;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-inner h2{font-size:27px;color:#04140F;letter-spacing:-.3px}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(4,20,15,.78);max-width:620px}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--ink-800);border-top:1px solid var(--line);
  padding-top:72px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:44px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:320px}
.footer-contact{margin-top:18px;font-size:13px;color:var(--text-3);line-height:2}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1)}
.footer-col a{
  display:block;font-size:14px;color:var(--text-2);padding:6px 0;
}
.footer-col a:hover{color:var(--brand-l);transform:translateX(2px)}
.footer-sub p{font-size:13.5px;color:var(--text-2);line-height:1.8;margin-bottom:14px}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 170px;height:44px;border-radius:10px;padding:0 14px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-1);font-size:14px;
  transition:border-color 180ms ease,box-shadow 180ms ease;
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,200,180,.18)}
.sub-hint{margin-top:12px;font-size:12.5px;color:var(--text-3)}
.footer-bottom{
  margin-top:56px;padding:22px 0 74px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--brand-l)}

/* ===== 固定转化条 ===== */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  display:flex;align-items:center;gap:14px;
  max-width:320px;padding:10px 10px 10px 20px;
  border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(19,29,43,.92),rgba(12,20,32,.92));
  border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
}
.float-cta span{font-size:13.5px;color:var(--text-2);white-space:nowrap}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .header-inner{gap:18px}
  .chip{padding:0 12px;font-size:13.5px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
  .footer-sub{grid-column:1 / -1}
  .sub-form{max-width:520px}
}
@media (max-width:991.98px){
  .sec{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-card{max-width:560px}
  .dl-grid,.rel-grid{grid-template-columns:repeat(2,1fr)}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .nav-toggle{display:inline-flex}
  .nav-chips{
    position:absolute;left:16px;right:16px;top:calc(100% + 10px);
    display:none;flex-direction:column;align-items:stretch;gap:6px;
    padding:12px;border-radius:var(--r-md);
    background:rgba(12,20,32,.97);
    box-shadow:var(--sh-2);
    margin-left:0;
  }
  .nav-chips.open{display:flex}
  .chip{height:auto;padding:12px 14px;border-radius:10px;font-size:14.5px}
  .chip.active{color:#04140F}
  .header-cta .btn-cta{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{padding:52px 0}
}
@media (max-width:767.98px){
  .wrap{padding:0 18px}
  .header-inner{padding:0 18px;height:56px}
  .brand-mark{width:30px;height:30px;border-radius:9px;font-size:13px}
  .brand-text{font-size:15px}
  .page-hero{padding:48px 0 60px}
  .sec-title{font-size:24px}
  .sec-head{margin-bottom:32px}
  .float-cta{
    left:0;right:0;bottom:0;max-width:none;border-radius:0;
    padding:10px 16px;justify-content:space-between;
    border-left:0;border-right:0;border-bottom:0;
  }
  .float-cta .btn{height:42px}
  .footer-bottom{padding-bottom:96px}
}
@media (max-width:575.98px){
  .dl-grid,.rel-grid,.spec-grid,.steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-actions .btn{width:100%}
  .spec-num{font-size:23px}
  .cta-inner h2{font-size:22px}
  .accordion-button{font-size:15.5px;padding:17px 18px}
  .accordion-body{padding:0 18px 18px}
}

/* roulang page: category4 */
:root{
  --ink-900:#070C14;
  --ink-800:#0C1420;
  --ink-700:#131D2B;
  --ink-600:#1C2836;
  --brand:#12C8B4;
  --brand-d:#0E9E92;
  --brand-l:#5FE3D6;
  --violet:#6C4DF6;
  --accent:#FF7A3D;
  --accent-2:#FFB020;
  --text-1:#E8EFF6;
  --text-2:#9FB0C0;
  --text-3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --paper:#F4F7F9;
  --paper-ink:#16202B;
  --paper-sub:#4C5D6B;
  --ok:#35D07F;
  --warn:#FFB020;
  --err:#FF5C6C;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(5,10,18,.35);
  --sh-2:0 14px 40px -12px rgba(5,10,18,.6);
  --t:180ms ease;
  --bs-primary:#12C8B4;
  --bs-body-bg:#070C14;
  --bs-body-color:#E8EFF6;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-1);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-l);text-decoration:none;transition:color var(--t),transform var(--t),opacity var(--t);}
a:hover{color:var(--brand);}
button,input{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:-.2px;}
p{margin:0 0 16px;}
ul{margin:0 0 16px;padding-left:20px;}
li{margin-bottom:8px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container-xl{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.num{font-family:Inter,"HarmonyOS Sans SC",system-ui,sans-serif;font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,12,20,.82);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),background var(--t);
}
.site-header.scrolled{border-bottom-color:var(--line);background:rgba(7,12,20,.94);}
.header-inner{
  max-width:1280px;margin:0 auto;padding:0 20px;
  height:68px;display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--brand),var(--brand-d));
  color:#04110F;font-size:15px;
  box-shadow:0 6px 18px -8px rgba(18,200,180,.8);
}
.brand-text{font-weight:700;font-size:16px;color:var(--text-1);letter-spacing:.2px;white-space:nowrap;}
.nav-chips{
  flex:1 1 auto;display:flex;align-items:center;gap:2px;
  padding:4px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  overflow-x:auto;scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;padding:8px 14px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--text-2);white-space:nowrap;
  transition:background var(--t),color var(--t),transform var(--t);
  border:1px solid transparent;
}
.chip:hover{color:var(--text-1);border-color:rgba(255,255,255,.18);background:rgba(255,255,255,.04);}
.chip.active{
  background:linear-gradient(140deg,var(--brand-l),var(--brand));
  color:#04110F;font-weight:700;
}
.header-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:all var(--t);
  text-align:center;line-height:1;
}
.btn-cta{
  background:linear-gradient(140deg,#FF9257,var(--accent));
  color:#1A0B02;
  box-shadow:0 0 0 1px rgba(255,122,61,.45),0 10px 26px -8px rgba(255,122,61,.55);
}
.btn-cta:hover{color:#1A0B02;filter:brightness(1.08);transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(255,122,61,.5),0 14px 32px -6px rgba(255,122,61,.6);}
.btn-cta:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;border-color:rgba(18,200,180,.55);color:var(--brand-l);
}
.btn-ghost:hover{background:rgba(18,200,180,.1);color:var(--brand-l);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-1);font-size:17px;
  cursor:pointer;transition:all var(--t);
}
.nav-toggle:hover{border-color:rgba(18,200,180,.5);color:var(--brand-l);}

/* ============ 内页头 ============ */
.page-hero{
  position:relative;padding:72px 0 64px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(7,12,20,.86),rgba(7,12,20,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 -1px 0;height:120px;
  background:linear-gradient(180deg,rgba(7,12,20,0),var(--ink-900));
  pointer-events:none;
}
.crumb-bar{
  position:relative;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);margin-bottom:22px;
}
.crumb-bar a{color:var(--text-2);}
.crumb-bar a:hover{color:var(--brand-l);}
.crumb-bar .sep{color:var(--text-3);}
.crumb-bar .current{color:var(--text-3);}
.page-hero h1{
  position:relative;z-index:2;
  font-size:46px;font-weight:800;letter-spacing:-.5px;margin-bottom:16px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--brand-l),var(--brand) 60%,var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  position:relative;z-index:2;
  font-size:16.5px;color:var(--text-2);max-width:640px;margin-bottom:26px;
}
.anchor-chips{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:10px;}
.anchor-chips a{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 15px;border-radius:var(--r-pill);font-size:13px;
  color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:all var(--t);
}
.anchor-chips a i{color:var(--brand);font-size:12px;}
.anchor-chips a:hover{color:var(--text-1);border-color:rgba(18,200,180,.5);transform:translateY(-2px);}

/* ============ 双栏主体 ============ */
.split-zone{padding:72px 0 40px;}
.article-col{max-width:100%;}
.content-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 34px 26px;box-shadow:var(--sh-1);margin-bottom:24px;
}
.content-card h2{
  font-size:28px;font-weight:700;margin-bottom:18px;
  padding-left:14px;position:relative;
}
.content-card h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand-l),var(--brand-d));
}
.content-card h3{font-size:20px;font-weight:700;margin:26px 0 12px;color:var(--text-1);}
.content-card p{color:var(--text-2);margin-bottom:16px;}
.content-card strong{color:var(--text-1);font-weight:700;}
.content-card ul{color:var(--text-2);}
.content-card ul li::marker{color:var(--brand);}
.note-line{
  margin:22px 0 8px;padding:16px 18px;border-radius:var(--r-md);
  background:rgba(18,200,180,.07);border-left:3px solid var(--brand);
  color:var(--text-2);font-size:14.5px;
}
.note-line i{color:var(--brand);margin-right:6px;}
.fig-block{margin:24px 0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);}
.fig-block .ratio{position:relative;width:100%;aspect-ratio:16/9;background:var(--ink-600);}
.fig-block .ratio img{width:100%;height:100%;object-fit:cover;}
.fig-block figcaption{
  padding:12px 16px;font-size:13px;color:var(--text-3);
  background:var(--ink-800);border-top:1px solid var(--line);
}
.rule-list{list-style:none;padding:0;margin:0;}
.rule-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);
  color:var(--text-2);margin:0;
}
.rule-list li:last-child{border-bottom:none;}
.rule-list .idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;font-weight:700;
  color:var(--brand-l);border:1px solid rgba(18,200,180,.5);background:rgba(18,200,180,.08);
}
.rule-list .txt strong{display:block;color:var(--text-1);font-size:15.5px;margin-bottom:4px;font-weight:600;}
.rule-list .txt span{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ============ 侧栏数据面板 ============ */
.side-panel{position:sticky;top:96px;}
.panel-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 22px;box-shadow:var(--sh-1);margin-bottom:20px;
}
.panel-card h3{
  font-size:16px;font-weight:700;margin-bottom:18px;
  display:flex;align-items:center;gap:9px;
}
.panel-card h3 i{color:var(--brand);font-size:14px;}
.metric-row{
  display:flex;align-items:baseline;justify-content:space-between;
  padding:12px 0;border-bottom:1px solid var(--line);
}
.metric-row:last-of-type{border-bottom:none;}
.metric-row .label{font-size:13.5px;color:var(--text-2);}
.metric-row .value{font-size:26px;font-weight:700;color:var(--accent-2);letter-spacing:-.5px;}
.metric-row .value small{font-size:13px;font-weight:600;color:var(--text-3);margin-left:3px;}
.metric-row .value.okv{color:var(--ok);}
.bar-item{margin-top:18px;}
.bar-item .bar-top{display:flex;justify-content:space-between;font-size:13px;color:var(--text-2);margin-bottom:7px;}
.bar-item .bar-top b{color:var(--text-1);font-weight:600;}
.bar-track{height:7px;border-radius:var(--r-pill);background:rgba(255,255,255,.07);overflow:hidden;}
.bar-fill{height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--brand-d),var(--brand-l));}
.bar-fill.violet{background:linear-gradient(90deg,#4B34C4,var(--violet));}
.bar-fill.orange{background:linear-gradient(90deg,#D9612A,var(--accent));}
.tip-list{list-style:none;padding:0;margin:0;}
.tip-list li{
  display:flex;gap:10px;font-size:13.5px;color:var(--text-2);
  padding:11px 0;border-bottom:1px solid var(--line);margin:0;line-height:1.65;
}
.tip-list li:last-child{border-bottom:none;}
.tip-list i{color:var(--accent-2);font-size:12px;margin-top:5px;}
.panel-cta{
  background:linear-gradient(155deg,rgba(18,200,180,.14),rgba(108,77,246,.12));
  border:1px solid rgba(18,200,180,.28);
}
.panel-cta p{font-size:13.5px;color:var(--text-2);margin-bottom:16px;}
.panel-cta .btn{height:44px;}

/* ============ 浅底核对板块 ============ */
.light-zone{
  background:var(--paper);color:var(--paper-ink);
  padding:88px 0;margin-top:48px;
}
.light-zone h2{
  font-size:30px;font-weight:700;color:var(--paper-ink);margin-bottom:14px;
}
.light-zone .lead{
  color:var(--paper-sub);font-size:15.5px;max-width:680px;margin-bottom:38px;
}
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.check-item{
  background:#fff;border:1px solid #E2EAEF;border-radius:var(--r-md);
  padding:22px 22px 18px;transition:all var(--t);
}
.check-item:hover{transform:translateY(-3px);border-color:#C7DCDF;box-shadow:0 14px 30px -18px rgba(16,40,52,.35);}
.check-item .ci-head{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.check-item .ci-head i{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:rgba(18,200,180,.14);color:#0E9E92;font-size:13px;
}
.check-item h3{font-size:17px;font-weight:700;color:var(--paper-ink);}
.check-item p{font-size:14px;color:var(--paper-sub);margin:0;line-height:1.8;}
.light-tip{
  margin-top:30px;padding:18px 22px;border-radius:var(--r-md);
  background:#E8F5F3;border-left:4px solid #0E9E92;
  font-size:14px;color:#20464A;
}

/* ============ 相关入口 ============ */
.rel-zone{padding:88px 0 24px;}
.sec-head{margin-bottom:34px;}
.sec-head h2{font-size:30px;font-weight:700;margin-bottom:10px;}
.sec-head p{color:var(--text-2);font-size:15px;margin:0;max-width:640px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.rel-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:all var(--t);box-shadow:var(--sh-1);
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.4);box-shadow:var(--sh-2);}
.rel-card .thumb{position:relative;aspect-ratio:16/10;background:var(--ink-600);overflow:hidden;}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 300ms ease;}
.rel-card:hover .thumb img{transform:scale(1.04);}
.badge-tag{
  position:absolute;left:12px;top:12px;
  padding:5px 10px;border-radius:6px;font-size:12px;font-weight:600;
  background:rgba(18,200,180,.16);color:var(--brand-l);
  backdrop-filter:blur(6px);
}
.rel-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.rel-body h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--text-1);}
.rel-body p{font-size:14px;color:var(--text-2);margin-bottom:16px;flex:1;}
.rel-body .go{
  display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--brand-l);
}
.rel-body .go i{transition:transform var(--t);font-size:12px;}
.rel-card:hover .go i{transform:translateX(3px);}

/* ============ 底部 CTA ============ */
.cta-zone{padding:56px 0 88px;}
.cta-box{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:48px 40px;
  background:linear-gradient(130deg,rgba(18,200,180,.16),rgba(108,77,246,.14)),var(--ink-800);
  border:1px solid rgba(18,200,180,.25);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-box::before{
  content:"";position:absolute;right:-60px;top:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,61,.28),transparent 68%);
  pointer-events:none;
}
.cta-box h2{font-size:28px;font-weight:700;margin-bottom:10px;}
.cta-box p{color:var(--text-2);margin:0;font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-800);border-top:1px solid var(--line);
  padding:72px 0 24px;margin-top:20px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1.1fr;gap:36px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:16px;max-width:320px;}
.footer-contact{font-size:13px;color:var(--text-3);line-height:1.9;}
.footer-col h4,.footer-sub h4{font-size:15px;font-weight:700;color:var(--text-1);margin-bottom:16px;}
.footer-col a{
  display:block;font-size:14px;color:var(--text-2);padding:5px 0;transition:all var(--t);
}
.footer-col a:hover{color:var(--brand-l);transform:translateX(2px);}
.footer-sub p{font-size:13.5px;color:var(--text-2);margin-bottom:14px;}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-form input{
  flex:1 1 160px;min-width:0;height:38px;padding:0 14px;border-radius:10px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-1);font-size:14px;
  transition:all var(--t);
}
.sub-form input::placeholder{color:var(--text-3);}
.sub-form input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(18,200,180,.16);
}
.sub-hint{font-size:12.5px;color:var(--text-3);margin-top:12px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand-l);}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;right:24px;bottom:24px;z-index:990;
  display:flex;align-items:center;gap:14px;
  padding:10px 12px 10px 18px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.11);
  box-shadow:var(--sh-2);max-width:320px;
}
.sticky-cta span{font-size:13.5px;color:var(--text-1);white-space:nowrap;font-weight:600;}
.sticky-cta .btn{height:38px;padding:0 16px;font-size:13.5px;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .header-inner{gap:18px;}
  .chip{padding:7px 12px;font-size:13px;}
}
@media (max-width:991.98px){
  .nav-toggle{display:grid;place-items:center;}
  .nav-chips{
    position:fixed;left:0;right:0;top:56px;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:16px 20px 24px;border-radius:0;border-left:none;border-right:none;
    background:rgba(9,15,24,.98);backdrop-filter:blur(16px);
    max-height:calc(100vh - 56px);overflow-y:auto;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity var(--t),transform var(--t);
  }
  .nav-chips.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .chip{padding:13px 16px;border-radius:12px;font-size:15px;border:1px solid var(--line);}
  .chip.active{background:linear-gradient(140deg,var(--brand-l),var(--brand));}
  .header-inner{height:56px;}
  .header-cta .btn-cta{display:none;}
  .page-hero{padding:48px 0 44px;}
  .page-hero h1{font-size:34px;}
  .hero-sub{font-size:15.5px;}
  .split-zone{padding:48px 0 24px;}
  .side-panel{position:static;margin-top:8px;}
  .content-card{padding:26px 22px 18px;}
  .content-card h2{font-size:23px;}
  .content-card h3{font-size:18px;}
  .light-zone{padding:60px 0;margin-top:36px;}
  .light-zone h2{font-size:24px;}
  .check-grid{grid-template-columns:1fr;}
  .rel-zone{padding:60px 0 16px;}
  .sec-head h2{font-size:24px;}
  .rel-grid{grid-template-columns:1fr;gap:18px;}
  .cta-zone{padding:40px 0 72px;}
  .cta-box{padding:32px 24px;flex-direction:column;align-items:flex-start;}
  .cta-box h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .site-footer{padding:56px 0 88px;}
  .sticky-cta{
    left:0;right:0;bottom:0;max-width:none;border-radius:16px 16px 0 0;
    justify-content:space-between;padding:10px 16px;
  }
  .sticky-cta span{font-size:13px;}
}
@media (max-width:575.98px){
  .container-xl{padding:0 16px;}
  .page-hero h1{font-size:30px;}
  .content-card{padding:22px 18px 14px;}
  .content-card h2{font-size:21px;}
  .metric-row .value{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;}
  .btn{height:48px;}
  .sticky-cta .btn{height:40px;}
}

/* roulang page: category5 */
:root{
  --ink-900:#070C14;--ink-800:#0C1420;--ink-700:#131D2B;--ink-600:#1C2836;
  --brand:#12C8B4;--brand-d:#0E9E92;--brand-l:#5FE3D6;
  --violet:#6C4DF6;--accent:#FF7A3D;--accent-2:#FFB020;
  --text-1:#E8EFF6;--text-2:#9FB0C0;--text-3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --paper:#F4F7F9;--paper-2:#E7EEF3;--paper-text:#16202B;--paper-text-2:#4A5A68;
  --r-sm:8px;--r-md:14px;--r-lg:20px;--r-pill:999px;
  --sh-1:0 4px 16px rgba(5,10,18,.35);--sh-2:0 14px 40px -12px rgba(5,10,18,.6);
  --t:180ms ease;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink-900);color:var(--text-1);
  font-family:var(--font-cn);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t)}
a:hover{color:var(--brand-l)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(18,200,180,.32)}
.container-xl{width:100%;max-width:1200px;margin-inline:auto;padding-inline:20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,12,20,.7);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t);
}
.site-header.scrolled{background:rgba(7,12,20,.92);border-bottom-color:var(--line)}
.header-inner{
  max-width:1280px;margin-inline:auto;padding:0 24px;height:68px;
  display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;white-space:nowrap;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;flex:0 0 34px;
  background:linear-gradient(150deg,var(--brand),var(--violet));
  color:#04241F;font-size:15px;box-shadow:0 6px 18px -8px rgba(18,200,180,.9);
}
.brand-text{letter-spacing:.2px}
.nav-chips{
  display:flex;align-items:center;gap:4px;padding:4px;margin-inline:auto;
  border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow-x:auto;scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;padding:8px 15px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);white-space:nowrap;border:1px solid transparent;
}
.chip:hover{color:#fff;background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.18)}
.chip.active{
  background:linear-gradient(135deg,var(--brand),var(--brand-l));
  color:#052A26;font-weight:700;border-color:transparent;
}
.chip.active:hover{color:#052A26}
.header-cta{display:flex;align-items:center;gap:14px;margin-left:14px}
.drawer-cta{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);color:var(--text-1);place-items:center;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(255,255,255,.24);color:#fff}

/* ---------- buttons ---------- */
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;border:0;cursor:pointer;
  font-size:15px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#FF8B52,#FF6A28);
  box-shadow:0 0 0 1px rgba(255,122,61,.45),0 10px 26px -8px rgba(255,122,61,.55);
  transition:transform var(--t),box-shadow var(--t),filter var(--t),color var(--t);
}
.btn-cta:hover{color:#fff;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,122,61,.5),0 14px 32px -6px rgba(255,122,61,.62)}
.btn-cta:active{transform:translateY(0)}
.btn-cta.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;cursor:pointer;
  background:transparent;border:1px solid var(--brand);color:var(--brand-l);
  font-size:15px;font-weight:700;
  transition:background var(--t),transform var(--t),color var(--t),border-color var(--t);
}
.btn-ghost:hover{background:rgba(18,200,180,.12);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-l);
}
.btn-line i{transition:transform var(--t)}
.btn-line:hover i{transform:translateX(3px)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;padding:64px 0 72px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 420px at 82% 8%,rgba(18,200,180,.20),transparent 68%),
    radial-gradient(700px 380px at 8% 92%,rgba(108,77,246,.18),transparent 70%),
    linear-gradient(180deg,rgba(7,12,20,.90),rgba(7,12,20,.96));
}
.page-hero .container-xl{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.crumbs .crumb-item{
  display:inline-flex;align-items:center;padding:6px 13px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.crumbs .crumb-item:hover{color:#fff;border-color:rgba(255,255,255,.22)}
.crumbs .crumb-sep{color:var(--text-3);font-size:13px}
.crumbs .crumb-item.current{color:var(--text-3);pointer-events:none;background:transparent;border-color:transparent;padding-left:0}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:48px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--brand-l);background:rgba(18,200,180,.12);border:1px solid rgba(18,200,180,.24);
}
.hero-copy h1{
  margin:20px 0 16px;font-size:48px;line-height:1.2;font-weight:800;letter-spacing:-.5px;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-note{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.trust-chip{
  display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.trust-chip i{color:var(--brand)}
.glass-card{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-radius:var(--r-lg);box-shadow:var(--sh-2);
}
.hero-panel{padding:16px}
.hero-panel-head{display:flex;align-items:center;justify-content:space-between;padding:4px 6px 12px;font-size:13px;color:var(--text-2)}
.hero-panel-head .dot{display:inline-flex;align-items:center;gap:7px}
.hero-panel-head .dot i{font-size:9px;color:var(--brand)}
.thumb{position:relative;width:100%;overflow:hidden;border-radius:var(--r-md);background:var(--ink-600)}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb-16-10{aspect-ratio:16/10}
.thumb-16-9{aspect-ratio:16/9}
.thumb-4-3{aspect-ratio:4/3}
.hero-panel .thumb{border-radius:14px}
.hero-panel-foot{display:flex;align-items:center;gap:10px;padding:14px 6px 4px;font-size:13px;color:var(--text-3)}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-light{background:var(--paper);color:var(--paper-text)}
.section-light .section-sub,.section-light .lead{color:var(--paper-text-2)}
.section-head{margin-bottom:44px}
.section-head.center{text-align:center;max-width:640px;margin-inline:auto}
.section-tag{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:700;
  padding:6px 12px;border-radius:6px;color:var(--brand-l);background:rgba(18,200,180,.12);
  letter-spacing:.06em;
}
.section-light .section-tag{color:var(--brand-d);background:rgba(18,200,180,.14)}
.section-title{font-size:31px;font-weight:700;line-height:1.35;margin-top:16px;letter-spacing:-.3px}
.section-sub{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:640px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- self check ---------- */
.check-grid{display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1fr);gap:24px;align-items:stretch}
.check-main{min-height:320px;padding:34px;display:flex;flex-direction:column;position:relative;overflow:hidden}
.check-main::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,200,180,.22),transparent 68%);
}
.check-icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:20px;
  color:#04241F;background:linear-gradient(140deg,var(--brand),var(--brand-l));margin-bottom:22px;
}
.check-main h3{font-size:21px;font-weight:700;margin-bottom:12px}
.check-main p{color:var(--text-2);font-size:15px;max-width:400px}
.check-main .btn-line{margin-top:auto;padding-top:24px}
.check-side{display:grid;gap:24px;grid-template-rows:1fr 1fr}
.solid-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;display:flex;gap:18px;align-items:flex-start;box-shadow:var(--sh-1);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.solid-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.36);box-shadow:var(--sh-2)}
.solid-card .mini-icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(18,200,180,.12);color:var(--brand-l);font-size:17px;
}
.solid-card h3{font-size:17.5px;font-weight:700;margin-bottom:8px}
.solid-card p{font-size:14.5px;color:var(--text-2)}

/* ---------- faq ---------- */
.faq-anchors{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.anchor-chip{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--r-pill);
  font-size:13.5px;font-weight:600;color:var(--brand-l);background:rgba(18,200,180,.12);
  border:1px solid rgba(18,200,180,.28);
}
.anchor-chip:hover{background:rgba(18,200,180,.2);color:#fff}
.section-light .anchor-chip{color:var(--brand-d);background:#fff;border-color:#D3E2E6}
.section-light .anchor-chip:hover{background:var(--brand);color:#04241F;border-color:var(--brand)}
.faq-group{margin-bottom:44px}
.faq-group:last-child{margin-bottom:0}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.faq-group-head span.num{
  font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--brand-d);
  width:30px;height:30px;border-radius:50%;border:1px solid rgba(14,158,146,.35);
  display:grid;place-items:center;flex:0 0 30px;
}
.faq-group-head h3{font-size:20px;font-weight:700;color:var(--paper-text)}
.faq-accordion .accordion-item{
  background:#fff;border:1px solid #E1E9EE;border-radius:var(--r-md)!important;
  margin-bottom:12px;overflow:hidden;box-shadow:0 2px 10px rgba(22,32,43,.04);
}
.faq-accordion .accordion-button{
  position:relative;width:100%;background:#fff;color:var(--paper-text);
  font-size:16px;font-weight:700;padding:20px 58px 20px 22px;border:0;box-shadow:none;
  border-radius:var(--r-md)!important;text-align:left;line-height:1.6;
}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-d);background:#FBFDFD}
.faq-accordion .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-accordion .accordion-button::after{
  content:"+";background-image:none!important;width:auto;height:auto;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:600;color:var(--brand-d);line-height:1;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"–";transform:translateY(-50%)}
.faq-accordion .accordion-body{
  padding:0 22px 22px;color:var(--paper-text-2);font-size:15px;line-height:1.85;
  background:#FBFDFD;
}
.faq-accordion .accordion-body .fix-list{margin-top:12px;display:grid;gap:8px}
.faq-accordion .accordion-body .fix-list li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--paper-text-2);
}
.faq-accordion .accordion-body .fix-list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
  background:var(--brand);
}
.faq-tip{
  margin-top:26px;display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px dashed #C9DCE1;border-radius:var(--r-md);padding:20px 22px;
}
.faq-tip i{color:var(--brand-d);font-size:17px;margin-top:3px}
.faq-tip p{font-size:14.5px;color:var(--paper-text-2)}
.faq-tip strong{color:var(--paper-text)}

/* ---------- form ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:48px;align-items:start}
.contact-copy h2{font-size:30px;font-weight:700;line-height:1.35;margin-top:16px}
.contact-copy p{margin-top:14px;color:var(--text-2);font-size:15.5px}
.metric-list{display:grid;gap:16px;margin-top:32px}
.metric{
  display:flex;align-items:baseline;gap:14px;padding:18px 20px;border-radius:var(--r-md);
  background:var(--ink-700);border:1px solid var(--line);
}
.metric .num{
  font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:800;color:var(--accent-2);line-height:1;
}
.metric .lbl{font-size:14px;color:var(--text-2)}
.form-card{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1)}
.form-card h3{font-size:19px;font-weight:700;margin-bottom:6px}
.form-card .form-intro{font-size:14px;color:var(--text-3);margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{margin-bottom:18px}
.form-field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.form-field label .req{color:var(--accent)}
.form-control,.form-select{
  width:100%;background:var(--ink-600);border:1px solid var(--line);border-radius:10px;
  color:var(--text-1);padding:12px 14px;font-size:15px;line-height:1.5;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.form-control::placeholder{color:var(--text-3)}
.form-control:focus,.form-select:focus{
  background:var(--ink-600);color:var(--text-1);border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(18,200,180,.20);outline:none;
}
textarea.form-control{min-height:120px;resize:vertical}
.form-select option{background:#16202B;color:#E8EFF6}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:6px}
.form-hint{font-size:13px;color:var(--text-3)}
.form-tip{
  margin-top:16px;font-size:14px;color:var(--brand-l);background:rgba(18,200,180,.10);
  border:1px solid rgba(18,200,180,.28);border-radius:10px;padding:12px 16px;display:none;
}
.form-tip.show{display:block}

/* ---------- entries ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.entry-card{
  display:flex;flex-direction:column;background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.entry-card:hover{transform:translateY(-3px);border-color:rgba(18,200,180,.36);box-shadow:var(--sh-2)}
.entry-card .thumb{border-radius:0}
.entry-body{padding:22px;display:flex;flex-direction:column;flex:1}
.badge-soft{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 10px;border-radius:6px;font-size:12px;font-weight:700;
  color:var(--brand-l);background:rgba(18,200,180,.13);margin-bottom:12px;
}
.entry-body h3{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:10px}
.entry-body p{font-size:14.5px;color:var(--text-2);flex:1}
.entry-body .btn-line{margin-top:18px}

/* ---------- bottom cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-top:1px solid var(--line);
  background:linear-gradient(120deg,rgba(18,200,180,.16),rgba(108,77,246,.16));
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.16;
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;padding:64px 0;
}
.cta-inner h2{font-size:29px;font-weight:700;line-height:1.4}
.cta-inner p{margin-top:10px;color:var(--text-2);font-size:15px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-800);border-top:1px solid var(--line);padding:72px 0 72px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14.5px;color:var(--text-2);max-width:300px}
.footer-contact{margin-top:18px;font-size:13.5px;color:var(--text-3);line-height:1.9}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col a{display:block;font-size:14.5px;color:var(--text-2);padding:6px 0}
.footer-col a:hover{color:var(--brand-l);transform:translateX(2px)}
.footer-sub p{font-size:14px;color:var(--text-2);margin-bottom:16px}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1;min-width:160px;height:40px;padding:0 14px;border-radius:10px;
  background:var(--ink-600);border:1px solid var(--line);color:var(--text-1);font-size:14px;
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,200,180,.18)}
.sub-hint{font-size:12.5px;color:var(--text-3);margin-top:12px}
.footer-bottom{
  margin-top:48px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand-l)}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  display:flex;align-items:center;gap:14px;max-width:320px;
  padding:10px 10px 10px 20px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.13);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
}
.float-cta span{font-size:14px;font-weight:600;color:var(--text-1)}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .hero-copy h1{font-size:42px}
}
@media (max-width:991.98px){
  .header-inner{height:56px;padding:0 16px;gap:12px}
  .brand-text{font-size:15px}
  .nav-toggle{display:grid}
  .header-cta .btn-cta{display:none}
  .header-cta{margin-left:auto;gap:10px}
  .nav-chips{
    position:fixed;top:56px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:16px;
    border-radius:0;border:0;border-bottom:1px solid var(--line);
    background:rgba(9,15,24,.98);
    max-height:calc(100vh - 56px);overflow-y:auto;
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity var(--t),transform var(--t),visibility var(--t);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
  }
  .nav-chips.open{transform:translateY(0);opacity:1;visibility:visible}
  .chip{padding:12px 16px;font-size:15px;border-radius:12px}
  .drawer-cta{
    display:flex;align-items:center;justify-content:center;margin-top:10px;height:48px;
    border-radius:12px;font-size:15px;font-weight:700;color:#fff;
    background:linear-gradient(135deg,#FF8B52,#FF6A28);
    box-shadow:0 0 0 1px rgba(255,122,61,.45),0 10px 26px -10px rgba(255,122,61,.6);
  }
  .drawer-cta:hover{color:#fff}
  .section{padding:64px 0}
  .page-hero{padding:44px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy h1{font-size:34px}
  .hero-sub{font-size:16px}
  .check-grid{grid-template-columns:1fr}
  .check-main{min-height:auto;padding:28px}
  .check-side{grid-template-rows:auto auto}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{padding:56px 0}
  .section-title{font-size:25px}
  .contact-copy h2{font-size:24px}
  .cta-inner h2{font-size:23px}
}
@media (max-width:767.98px){
  .float-cta{
    left:0;right:0;bottom:0;max-width:none;border-radius:0;height:60px;
    padding:8px 16px;justify-content:space-between;gap:10px;
    border-left:0;border-right:0;border-bottom:0;
  }
  .site-footer{padding-bottom:96px}
  .hero-copy h1{font-size:30px}
  .form-card{padding:24px}
  .form-row{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:1fr}
  .section-head-row{align-items:flex-start}
  .faq-accordion .accordion-button{font-size:15px;padding:18px 52px 18px 18px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:575.98px){
  .container-xl{padding-inline:16px}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn-cta,.hero-actions .btn-ghost{width:100%}
  .metric{padding:16px}
  .metric .num{font-size:26px}
}