/* roulang page: index */
:root{
  --bg:#05080F;
  --bg-elev:#0A1220;
  --bg-deep:#03060C;
  --brand:#2E6BFF;
  --brand-hover:#4A80FF;
  --brand-active:#1E4FD8;
  --accent:#21E6C1;
  --accent-soft:#7CF7E0;
  --orange:#FF7A45;
  --text:#EAF1FF;
  --text-2:#A9B8D0;
  --text-3:#6C7C96;
  --line:rgba(120,160,220,0.16);
  --line-strong:rgba(120,160,220,0.32);
  --success:#35D07F;
  --warn:#FFB020;
  --danger:#FF5C6C;
  --r-card:16px;
  --r-lg:20px;
  --r-img:12px;
  --r-btn:12px;
  --shadow-card:0 20px 40px -20px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 0 1px rgba(33,230,193,.45), 0 8px 30px -6px rgba(33,230,193,.5);
  --mono:"SF Mono", ui-monospace, Menlo, Consolas, "Roboto Mono", monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
.site-body{
  margin:0;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(46,107,255,.20), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(33,230,193,.12), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,opacity .18s ease;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1280px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:64px;
  background:transparent;
  transition:background .22s ease,border-color .22s ease,backdrop-filter .22s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.72);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
}
.header-grid{
  height:64px;
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  column-gap:20px;
  align-items:center;
}
.header-left{grid-column:1 / span 6;display:flex;align-items:center;gap:28px;min-width:0;}
.header-right{grid-column:8 / span 5;display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0;}
@media (max-width:1279px){
  .header-left{grid-column:1 / span 5;}
  .header-right{grid-column:7 / span 6;}
}
@media (max-width:1023px){
  .header-left{grid-column:1 / span 7;}
  .header-right{grid-column:9 / span 4;}
  .main-nav{display:none;}
  .nav-search{display:none;}
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,rgba(46,107,255,.9),rgba(33,230,193,.85));
  display:grid;place-items:center;
  box-shadow:0 6px 18px -6px rgba(33,230,193,.6);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-text b{font-size:15px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.logo-text span{font-size:10px;color:var(--text-3);letter-spacing:.16em;font-family:var(--mono);}
.main-nav{display:flex;align-items:center;gap:22px;}
.nav-link{
  position:relative;font-size:14px;color:var(--text-2);padding:6px 2px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after,.nav-link:hover::after{transform:scaleX(1);}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 12px;border-radius:999px;
  background:rgba(18,28,45,.6);border:1px solid var(--line);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{border-color:rgba(33,230,193,.55);box-shadow:0 0 0 4px rgba(33,230,193,.12);}
.nav-search svg{width:16px;height:16px;color:var(--text-3);flex:none;}
.nav-search input{
  width:118px;background:transparent;border:0;outline:none;font-size:13px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(18,28,45,.6);border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle svg{width:20px;height:20px;color:var(--text);}
@media (max-width:1023px){.menu-toggle{display:inline-flex;}}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:14px;font-weight:600;
  padding:11px 20px;cursor:pointer;border:1px solid transparent;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease,color .15s ease,border-color .15s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:linear-gradient(135deg,#2E6BFF 0%,#21E6C1 100%);
  color:#05121A;box-shadow:var(--glow);
}
.btn-primary:hover{box-shadow:0 0 0 1px rgba(33,230,193,.6),0 12px 38px -6px rgba(33,230,193,.7);}
.btn-ghost{
  background:rgba(18,28,45,.55);border-color:rgba(33,230,193,.4);color:var(--accent-soft);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.btn-ghost:hover{border-color:rgba(33,230,193,.75);color:#fff;background:rgba(24,40,62,.7);}
.btn-outline{
  background:transparent;border-color:var(--line-strong);color:var(--text-2);
}
.btn-outline:hover{color:var(--text);border-color:rgba(33,230,193,.5);}
.btn-sm{padding:9px 16px;font-size:13px;}
.header-cta{padding:10px 18px;font-size:13px;}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(3,6,12,.6);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  opacity:0;pointer-events:none;transition:opacity .2s ease;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:80;
  background:rgba(10,18,32,.92);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border-left:1px solid var(--line);
  padding:20px;display:flex;flex-direction:column;gap:20px;
  transform:translateX(102%);transition:transform .24s ease;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(18,28,45,.7);display:grid;place-items:center;cursor:pointer;
}
.drawer-close svg{width:18px;height:18px;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  padding:13px 4px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--accent-soft);}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;border-radius:12px;background:rgba(18,28,45,.7);border:1px solid var(--line);}
.drawer-search input{width:100%;background:transparent;border:0;outline:none;font-size:14px;}
.drawer-search svg{width:16px;height:16px;color:var(--text-3);flex:none;}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:auto;}

/* ---------- generic ---------- */
.glass{
  position:relative;
  background:rgba(18,28,45,.55);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
}
.glass::before{
  content:"";position:absolute;left:12px;right:12px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.34),transparent);
  pointer-events:none;
}
.hairline{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);border:0;}
.metric-num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.section{padding-top:64px;padding-bottom:64px;}
@media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-title{
  position:relative;padding-left:14px;font-size:26px;font-weight:700;line-height:1.3;letter-spacing:-.01em;
}
@media (min-width:1024px){.section-title{font-size:32px;}}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--accent),var(--brand));
}
.section-desc{margin-top:10px;font-size:14px;color:var(--text-3);max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;color:var(--accent-soft);letter-spacing:.08em;
  padding:6px 12px;border-radius:999px;border:1px solid rgba(33,230,193,.32);
  background:rgba(33,230,193,.08);font-family:var(--mono);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;
  padding:4px 10px;border-radius:999px;
  background:rgba(18,28,45,.7);border:1px solid var(--line);color:var(--accent-soft);
}
.badge-neutral{color:var(--text-2);}
.link-more{font-size:13px;color:var(--accent-soft);display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{color:#fff;}
.link-more svg{width:14px;height:14px;transition:transform .18s ease;}
.link-more:hover svg{transform:translateX(3px);}

/* ---------- hero ---------- */
.hero{padding-top:96px;padding-bottom:48px;}
@media (min-width:1024px){.hero{padding-top:120px;padding-bottom:72px;}}
.hero-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;row-gap:36px;align-items:center;}
.hero-copy{grid-column:1 / span 12;}
.hero-visual{grid-column:1 / span 12;}
@media (min-width:1024px){
  .hero-copy{grid-column:1 / span 5;}
  .hero-visual{grid-column:6 / span 7;}
}
.hero-title{
  margin-top:20px;
  font-size:clamp(34px,5vw,56px);
  font-weight:800;line-height:1.15;letter-spacing:-.02em;
}
.hero-title em{font-style:normal;background:linear-gradient(120deg,var(--brand-hover),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{margin-top:18px;font-size:15px;color:var(--text-2);max-width:560px;}
@media (min-width:1024px){.hero-sub{font-size:16px;}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-mini{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line);}
.hero-mini-item b{display:block;font-family:var(--mono);font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text);}
.hero-mini-item span{font-size:12px;color:var(--text-3);}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:0 30px 60px -30px rgba(0,0,0,.9);
  aspect-ratio:16/10;min-height:240px;background:#04070d;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(3,6,12,.94) 4%,rgba(3,6,12,.5) 42%,rgba(3,6,12,.05) 78%);
}
.hero-float{
  position:absolute;z-index:2;border-radius:var(--r-card);
  background:rgba(18,28,45,.62);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);padding:14px 16px;
}
.hero-float-data{left:16px;bottom:16px;width:min(258px,72%);}
@media (min-width:768px){.hero-float-data{left:22px;bottom:22px;}}
.hero-float-title{font-size:12px;color:var(--text-3);display:flex;align-items:center;justify-content:space-between;gap:8px;}
.hero-float-title b{font-family:var(--mono);color:var(--accent-soft);font-size:12px;}
.mini-bars{display:flex;align-items:flex-end;gap:6px;height:56px;margin-top:12px;}
.mini-bars i{
  flex:1;border-radius:3px 3px 0 0;
  background:linear-gradient(180deg,rgba(33,230,193,.95),rgba(46,107,255,.45));
}
.mini-bars i.dim{background:linear-gradient(180deg,rgba(120,160,220,.5),rgba(120,160,220,.15));}
.hero-float-metric{right:16px;top:16px;text-align:right;}
@media (min-width:768px){.hero-float-metric{right:22px;top:22px;}}
.hero-float-metric b{display:block;font-family:var(--mono);font-size:26px;font-weight:700;color:var(--text);}
.hero-float-metric span{font-size:11px;color:var(--text-3);}

/* ---------- metrics ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
@media (min-width:1024px){.metric-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}}
.metric-card{
  position:relative;padding:20px 18px;border-radius:var(--r-card);
  background:rgba(18,28,45,.55);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  overflow:hidden;transition:transform .18s ease,border-color .18s ease;
}
.metric-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(33,230,193,.75),transparent);
}
.metric-card:hover{transform:translateY(-2px);border-color:rgba(33,230,193,.32);}
.metric-label{font-size:13px;color:var(--text-2);}
.metric-value{display:flex;align-items:baseline;gap:6px;margin-top:12px;}
.metric-value b{font-family:var(--mono);font-size:40px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1;}
@media (min-width:1024px){.metric-value b{font-size:48px;}}
.metric-value span{font-size:13px;color:var(--text-3);}
.metric-delta{display:inline-flex;align-items:center;gap:4px;margin-top:12px;font-size:12px;font-family:var(--mono);}
.delta-up{color:var(--accent);}
.delta-down{color:var(--orange);}
.metric-foot{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:11px;color:var(--text-3);}

/* ---------- bento services ---------- */
.bento{display:grid;grid-template-columns:repeat(1,minmax(0,1fr));gap:18px;}
@media (min-width:768px){.bento{grid-template-columns:repeat(3,minmax(0,1fr));}}
.bento-card{
  position:relative;display:flex;flex-direction:column;gap:14px;
  padding:22px;border-radius:var(--r-card);
  background:rgba(18,28,45,.5);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.bento-card:hover{transform:translateY(-2px);border-color:rgba(33,230,193,.34);}
.bento-card.is-main{grid-column:1 / -1;}
.bento-card.tall{padding:24px;}
@media (min-width:768px){
  .bento-card.is-main{grid-column:1 / span 2;flex-direction:row;align-items:center;gap:24px;}
  .bento-card.is-main .bento-body{flex:1;min-width:0;}
  .bento-card.is-main .bento-media{flex:0 0 42%;}
}
.bento-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;}
.bento-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease;}
.bento-card:hover .bento-media img{transform:scale(1.04);}
.bento-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,rgba(46,107,255,.24),rgba(33,230,193,.18));
  border:1px solid rgba(33,230,193,.28);
}
.bento-icon svg{width:20px;height:20px;stroke:var(--accent-soft);}
.bento-card h3{font-size:18px;font-weight:600;letter-spacing:-.01em;}
.bento-card p{font-size:14px;color:var(--text-2);}
.point-list{display:flex;flex-direction:column;gap:8px;margin-top:4px;}
.point-list li{display:flex;gap:10px;font-size:13px;color:var(--text-2);}
.point-list li svg{width:16px;height:16px;flex:none;margin-top:4px;stroke:var(--accent);}

/* ---------- news list ---------- */
.news-layout{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:768px){.news-layout{grid-template-columns:repeat(3,minmax(0,1fr));}}
.news-feature{
  grid-column:1 / -1;display:grid;grid-template-columns:1fr;gap:0;overflow:hidden;
  border-radius:var(--r-card);background:rgba(18,28,45,.5);border:1px solid var(--line);
  box-shadow:var(--shadow-card);transition:border-color .2s ease;
}
@media (min-width:768px){.news-feature{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);}}
.news-feature:hover{border-color:rgba(33,230,193,.34);}
.news-feature-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#04070d;}
.news-feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease;}
.news-feature:hover .news-feature-media img{transform:scale(1.03);}
.news-feature-body{padding:22px;display:flex;flex-direction:column;gap:12px;}
.news-feature-body h3{font-size:20px;font-weight:600;line-height:1.45;}
.news-card{
  display:flex;flex-direction:column;gap:12px;padding:14px;
  border-radius:var(--r-card);background:rgba(18,28,45,.5);border:1px solid var(--line);
  box-shadow:var(--shadow-card);transition:transform .18s ease,border-color .18s ease;
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(33,230,193,.34);}
.news-card-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:#04070d;}
.news-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease;}
.news-card:hover .news-card-media img{transform:scale(1.02);}
.news-card h3{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card p{font-size:13px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--text-3);font-family:var(--mono);}
.empty-state{
  grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;border-radius:var(--r-card);border:1px dashed var(--line-strong);
  background:rgba(18,28,45,.35);text-align:center;
}
.empty-state svg{width:44px;height:44px;stroke:var(--text-3);}
.empty-state p{font-size:14px;color:var(--text-2);}

/* ---------- compare ---------- */
.compare{padding:22px;border-radius:var(--r-card);background:rgba(18,28,45,.45);border:1px solid var(--line);}
.compare-row{padding:18px 0;border-bottom:1px solid var(--line);}
.compare-row:last-child{border-bottom:0;padding-bottom:0;}
.compare-row:first-child{padding-top:0;}
.compare-name{font-size:15px;font-weight:600;margin-bottom:14px;}
.compare-cols{display:grid;grid-template-columns:1fr;gap:14px;}
@media (min-width:768px){.compare-cols{grid-template-columns:1fr 1fr;gap:24px;}}
.compare-col-label{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--text-3);font-family:var(--mono);margin-bottom:8px;}
.compare-track{height:10px;border-radius:999px;background:rgba(120,160,220,.1);overflow:hidden;}
.compare-fill{height:100%;border-radius:999px;transition:width .4s ease;}
.fill-muted{background:linear-gradient(90deg,rgba(120,160,220,.55),rgba(120,160,220,.28));}
.fill-accent{background:linear-gradient(90deg,#2E6BFF,#21E6C1);box-shadow:0 0 18px -2px rgba(33,230,193,.6);}
.compare-note{margin-top:8px;font-size:12px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:16px;text-align:left;
  padding:20px 4px;background:transparent;border:0;cursor:pointer;
}
.faq-no{
  font-family:var(--mono);font-size:13px;color:var(--text-3);flex:none;width:28px;padding-top:3px;
  transition:color .18s ease;
}
.faq-q span.q-text{flex:1;font-size:15px;font-weight:600;color:var(--text);}
.faq-arrow{width:18px;height:18px;flex:none;margin-top:3px;color:var(--text-3);transition:transform .2s ease,color .2s ease;}
.faq-item.open .faq-no{color:var(--accent);}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 4px 22px 44px;font-size:14px;color:var(--text-2);}

/* ---------- form ---------- */
.form-card{padding:26px;border-radius:var(--r-lg);}
@media (min-width:768px){.form-card{padding:34px;}}
.form-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:768px){.form-grid{grid-template-columns:1fr 1fr;}}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--text-2);}
.field input,.field select,.field textarea{
  width:100%;padding:14px;border-radius:12px;
  background:rgba(18,28,45,.62);border:1px solid var(--line);
  color:var(--text);font-size:14px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:120px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(33,230,193,.75);box-shadow:0 0 0 6px rgba(33,230,193,.14);
}
.field select option{background:#0A1220;color:var(--text);}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:20px;}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);}
.check input{width:16px;height:16px;margin-top:3px;accent-color:#21E6C1;flex:none;}
.form-success{
  margin-top:16px;padding:14px 16px;border-radius:12px;font-size:13px;
  background:rgba(53,208,127,.1);border:1px solid rgba(53,208,127,.4);color:#9df0c5;
}
.btn.is-loading{opacity:.72;pointer-events:none;}

/* ---------- CTA strip ---------- */
.cta-strip{
  padding:30px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(46,107,255,.22),rgba(33,230,193,.14) 62%,rgba(10,18,32,.5));
  border:1px solid var(--line);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.cta-strip h2{font-size:22px;font-weight:700;letter-spacing:-.01em;}
.cta-strip p{margin-top:8px;font-size:14px;color:var(--text-2);max-width:640px;}

/* ---------- footer ---------- */
.site-footer{margin-top:64px;background:var(--bg-deep);border-top:1px solid var(--line);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;padding:48px 0 32px;}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand p{margin-top:14px;font-size:13px;color:var(--text-3);max-width:320px;}
.footer-col h4{font-size:13px;color:var(--text);letter-spacing:.06em;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13px;color:var(--text-3);}
.footer-col a:hover{color:var(--brand-hover);}
.footer-col p{font-size:13px;color:var(--text-3);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 32px;
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--accent-soft);}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg:#05080F;
  --bg-raise:#0A1220;
  --bg-deep:#03060C;
  --primary:#2E6BFF;
  --primary-hover:#4A80FF;
  --primary-active:#1E4FD8;
  --accent:#21E6C1;
  --accent-2:#7CF7E0;
  --orange:#FF7A45;
  --text:#EAF1FF;
  --text-2:#A9B8D0;
  --text-3:#6C7C96;
  --line:rgba(120,160,220,0.16);
  --line-strong:rgba(120,160,220,0.28);
  --glass:rgba(18,28,45,0.55);
  --glass-top:rgba(255,255,255,0.06);
  --radius-sm:12px;
  --radius:16px;
  --radius-lg:20px;
  --shadow-card:0 20px 40px -20px rgba(0,0,0,0.7);
  --shadow-glow:0 0 0 1px rgba(33,230,193,0.45), 0 8px 30px -6px rgba(33,230,193,0.5);
  --font-mono:SFMono-Regular,Menlo,Consolas,"Noto Sans Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p{margin:0;}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}
@media (max-width:1024px){ .container{padding:0 24px;} }
@media (max-width:640px){ .container{padding:0 20px;} }

.metric-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-0.01em;}
.hairline{height:1px;background:var(--line);border:0;}
.glass{
  background:var(--glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card), inset 0 1px 0 var(--glass-top);
}

/* ---------- HEADER ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.scrolled{
  background:rgba(5,8,15,0.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
}
.header-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:20px;
  align-items:center;
  height:64px;
}
.header-left{grid-column:span 8;display:flex;align-items:center;gap:26px;min-width:0;}
.header-right{grid-column:span 4;display:flex;align-items:center;justify-content:flex-end;gap:12px;min-width:0;}

.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  box-shadow:0 6px 18px -8px rgba(33,230,193,0.7);
  flex-shrink:0;
}
.logo-mark svg{width:20px;height:20px;display:block;}
.logo-text{display:flex;flex-direction:column;line-height:1.12;}
.logo-text b{font-size:14.5px;font-weight:700;letter-spacing:-0.01em;color:var(--text);}
.logo-text span{font-size:11.5px;color:var(--text-3);letter-spacing:0.08em;}

.main-nav{display:flex;align-items:center;gap:4px;min-width:0;overflow:hidden;}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:13.5px;
  color:var(--text-2);
  white-space:nowrap;
  border-radius:10px;
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--primary));
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(120,160,220,0.08);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}

.nav-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 12px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(18,28,45,0.5);
  backdrop-filter:blur(12px);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search svg{width:15px;height:15px;color:var(--text-3);flex-shrink:0;}
.nav-search input{
  width:132px;border:0;background:transparent;outline:none;font-size:13px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{border-color:rgba(33,230,193,0.55);box-shadow:0 0 0 4px rgba(33,230,193,0.12);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:12px;
  border:1px solid transparent;
  padding:0 20px;height:44px;
  font-size:14.5px;font-weight:600;
  cursor:pointer;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease,color .15s ease,border-color .15s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  color:#05121A;
  box-shadow:var(--shadow-glow);
  border:0;
}
.btn-primary:hover{box-shadow:0 0 0 1px rgba(33,230,193,0.6),0 12px 38px -6px rgba(33,230,193,0.62);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);background:linear-gradient(135deg,var(--primary-active) 0%,#17c4a5 100%);}
.btn-ghost{
  background:rgba(18,28,45,0.5);
  border-color:rgba(33,230,193,0.4);
  color:var(--accent-2);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{background:rgba(33,230,193,0.1);border-color:var(--accent);color:var(--accent);}
.header-cta{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px;}

.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(18,28,45,0.5);
  align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle svg{width:20px;height:20px;color:var(--text);}

/* ---------- DRAWER ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:90;
  background:rgba(3,6,12,0.6);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:100;
  width:min(340px,86vw);
  background:rgba(8,14,26,0.96);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .3s cubic-bezier(.22,.9,.3,1);
  display:flex;flex-direction:column;
  padding:20px 22px 28px;
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(18,28,45,0.6);color:var(--text);cursor:pointer;font-size:22px;line-height:1;
  display:grid;place-items:center;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{
  padding:12px 12px;border-radius:12px;font-size:15px;color:var(--text-2);
  border-left:2px solid transparent;transition:.18s ease;
}
.drawer-nav a:hover{background:rgba(120,160,220,0.08);color:var(--text);}
.drawer-nav a.active{color:var(--accent);border-left-color:var(--accent);background:rgba(33,230,193,0.07);font-weight:600;}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;margin-bottom:18px;
  border:1px solid var(--line);border-radius:12px;background:rgba(18,28,45,0.5);
}
.drawer-search input{flex:1;border:0;background:transparent;outline:none;font-size:14px;}
.drawer-cta{width:100%;margin-bottom:10px;}

/* ---------- ARTICLE HERO ---------- */
.article-hero{
  position:relative;
  padding:132px 0 40px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:0.20;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,0.72) 0%,rgba(5,8,15,0.92) 55%,var(--bg) 100%);
}
.article-hero .container{position:relative;z-index:2;}

.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-3);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:var(--text-2);}

.post-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;padding:4px 10px;border-radius:999px;
  background:rgba(18,28,45,0.6);
  border:1px solid rgba(33,230,193,0.28);
  color:var(--accent-2);
  backdrop-filter:blur(12px);
}
.meta-text{font-size:13px;color:var(--text-3);font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

.article-title{
  font-size:clamp(26px,3.4vw,38px);
  font-weight:800;
  line-height:1.32;
  letter-spacing:-0.02em;
  color:var(--text);
  max-width:900px;
}
.article-title::before{
  content:"";display:block;width:44px;height:3px;border-radius:3px;margin-bottom:20px;
  background:linear-gradient(90deg,var(--accent),var(--primary));
}

/* ---------- ARTICLE BODY ---------- */
.article-main{padding:52px 0 20px;}
.article-wrap{max-width:780px;margin:0 auto;}
.article-body{
  font-size:16px;line-height:1.9;color:var(--text-2);
  word-break:break-word;
}
.article-body p{margin:0 0 1.2em;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;
  font-size:26px;line-height:1.4;font-weight:700;color:var(--text);
  margin:44px 0 18px;padding-left:14px;letter-spacing:-0.01em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--accent),var(--primary));
}
.article-body h3{
  font-size:18px;font-weight:600;color:var(--accent-2);
  margin:30px 0 12px;letter-spacing:0.01em;
}
.article-body h4{font-size:16px;font-weight:600;color:var(--text);margin:22px 0 10px;}
.article-body a{color:var(--accent-2);border-bottom:1px solid rgba(33,230,193,0.35);transition:color .18s ease,border-color .18s ease;}
.article-body a:hover{color:var(--accent);border-color:var(--accent);}
.article-body strong{color:var(--text);font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.5em 0;padding-left:.2em;}
.article-body ul li::marker{color:var(--accent);}
.article-body ol li::marker{color:var(--accent);font-family:var(--font-mono);font-weight:600;}
.article-body img{
  max-width:100%;height:auto;border-radius:12px;margin:26px auto;
  border:1px solid var(--line);
}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;
}
.article-body blockquote{
  margin:26px 0;padding:16px 20px;
  background:rgba(18,28,45,0.55);
  border-left:4px solid var(--accent);
  border-radius:0 12px 12px 0;
  backdrop-filter:blur(14px);
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
  display:table;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;
}
.article-body th{background:rgba(18,28,45,0.72);color:var(--text);font-weight:600;}
.article-body tr:nth-child(even) td{background:rgba(120,160,220,0.04);}
.article-body code{
  font-family:var(--font-mono);font-size:0.9em;
  background:rgba(120,160,220,0.12);padding:2px 6px;border-radius:6px;color:var(--accent-2);
}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0;}

.empty-state{
  text-align:center;padding:60px 24px;
  background:rgba(18,28,45,0.45);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);
}
.empty-state svg{width:44px;height:44px;color:var(--text-3);margin:0 auto 16px;}
.empty-state h2{font-size:20px;font-weight:700;color:var(--text);margin-bottom:10px;}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px;}

.post-foot{
  max-width:780px;margin:44px auto 0;padding-top:26px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;
}
.post-foot .links{display:flex;gap:10px;flex-wrap:wrap;}

/* ---------- RELATED ---------- */
.related{padding:64px 0 8px;}
.section-head{margin-bottom:30px;max-width:720px;}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;font-family:var(--font-mono);
}
.section-tag::before{content:"";width:22px;height:1px;background:var(--accent);}
.section-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--text);letter-spacing:-0.01em;}
.section-desc{font-size:15px;color:var(--text-2);margin-top:10px;}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card), inset 0 1px 0 var(--glass-top);
  transition:border-color .2s ease,transform .2s ease;
}
.post-card:hover{border-color:rgba(33,230,193,0.4);transform:translateY(-2px);}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-raise);}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .thumb img{transform:scale(1.03);}
.post-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card h3{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card p{font-size:13.5px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;border-top:1px solid var(--line);}
.post-card .foot .meta-text{font-size:12.5px;}

/* ---------- CTA BAND ---------- */
.cta-band{padding:72px 0 88px;}
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:rgba(18,28,45,0.55);
  backdrop-filter:blur(16px);
  padding:44px 44px;
  display:grid;grid-template-columns:1.3fr 1fr;gap:34px;align-items:center;
  box-shadow:var(--shadow-card), inset 0 1px 0 var(--glass-top);
}
.cta-card::before{
  content:"";position:absolute;inset:0;opacity:.16;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
}
.cta-card > *{position:relative;z-index:2;}
.cta-card h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.4;margin-bottom:12px;}
.cta-card p{font-size:15px;color:var(--text-2);max-width:520px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;}

/* ---------- FOOTER ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:60px 0 0;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px;padding-bottom:44px;}
.footer-brand p{font-size:13.5px;color:var(--text-3);line-height:1.85;margin-top:16px;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li a{font-size:13.5px;color:var(--text-3);transition:color .18s ease;}
.footer-col li a:hover{color:var(--primary-hover);}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.85;}
.footer-col p a{color:var(--text-2);transition:color .18s ease;}
.footer-col p a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);transition:color .18s ease;}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- RESPONSIVE ---------- */
@media (max-width:1024px){
  .header-left{grid-column:span 9;}
  .header-right{grid-column:span 3;}
  .main-nav .nav-link{padding:8px 9px;font-size:12.5px;}
  .nav-search{display:none;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-card{grid-template-columns:1fr;padding:36px 30px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:820px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-left{grid-column:span 8;}
  .header-right{grid-column:span 4;}
}
@media (max-width:640px){
  .site-header .header-grid{height:56px;}
  .article-hero{padding:104px 0 30px;}
  .article-title{font-size:24px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;margin:34px 0 14px;}
  .article-body h3{font-size:17px;}
  .article-body table{font-size:13px;display:block;overflow-x:auto;white-space:nowrap;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{padding:52px 0 64px;}
  .cta-card{padding:30px 22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .post-foot{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
    --bg:#05080F;
    --panel:#0A1220;
    --deep:#03060C;
    --brand:#2E6BFF;
    --brand-hi:#4A80FF;
    --brand-press:#1E4FD8;
    --accent:#21E6C1;
    --accent-2:#7CF7E0;
    --energy:#FF7A45;
    --text:#EAF1FF;
    --text-2:#A9B8D0;
    --text-3:#6C7C96;
    --line:rgba(120,160,220,0.16);
    --line-strong:rgba(120,160,220,0.30);
    --glass:rgba(18,28,45,0.55);
    --glass-2:rgba(18,28,45,0.72);
    --ok:#35D07F;
    --warn:#FFB020;
    --err:#FF5C6C;
    --r-card:16px;
    --r-glass:20px;
    --r-img:12px;
    --r-btn:12px;
    --shadow-card:0 20px 40px -20px rgba(0,0,0,0.7), inset 0 1px 0 rgba(255,255,255,0.06);
    --shadow-glow:0 0 0 1px rgba(33,230,193,0.45), 0 8px 30px -6px rgba(33,230,193,0.5);
    --font-mono:"SFMono-Regular", Consolas, Menlo, "Liberation Mono", monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}

  html body{
    margin:0;
    padding:0;
    background-color:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
    overflow-x:hidden;
  }

  .page-body{background-color:var(--bg);color:var(--text);}

  .mono,.metric-num{
    font-family:var(--font-mono);
    font-variant-numeric:tabular-nums;
    letter-spacing:-0.01em;
  }

  .container{width:100%;max-width:1280px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){ .container{padding-left:24px;padding-right:24px;} }
  @media (min-width:1024px){ .container{padding-left:32px;padding-right:32px;} }

  .skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#05121A;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
  .skip-link:focus{left:0;}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    height:64px;
    display:flex;
    align-items:center;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background-color .22s ease, border-color .22s ease, backdrop-filter .22s ease;
  }
  .site-header.is-scrolled{
    background:rgba(5,8,15,0.72);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-bottom-color:rgba(33,230,193,0.22);
  }
  .header-grid{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    height:64px;
  }
  .header-left{display:flex;align-items:center;gap:26px;min-width:0;}
  .header-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}

  .logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{
    width:38px;height:38px;border-radius:11px;
    display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--brand),var(--accent));
    box-shadow:0 6px 18px -6px rgba(33,230,193,0.6);
  }
  .logo-mark svg{width:22px;height:22px;}
  .logo-text{display:flex;flex-direction:column;line-height:1.15;}
  .logo-text b{font-size:15.5px;font-weight:800;letter-spacing:-0.01em;color:var(--text);}
  .logo-text span{font-size:11.5px;color:var(--accent);letter-spacing:0.16em;}

  .main-nav{display:none;align-items:center;gap:4px;}
  .nav-link{
    position:relative;
    display:inline-block;
    padding:8px 10px;
    font-size:14px;
    color:var(--text-2);
    border-radius:10px;
    white-space:nowrap;
    transition:color .18s ease, background-color .18s ease;
  }
  .nav-link:hover{color:var(--text);background:rgba(120,160,220,0.08);}
  .nav-link::after{
    content:"";
    position:absolute;
    left:10px;right:10px;bottom:2px;
    height:2px;border-radius:2px;
    background:var(--accent);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .2s ease;
  }
  .nav-link.active{color:var(--text);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}

  .nav-search{
    display:flex;align-items:center;gap:8px;
    height:38px;padding:0 12px;
    border-radius:10px;
    background:rgba(18,28,45,0.6);
    border:1px solid var(--line);
    transition:border-color .18s ease, box-shadow .18s ease;
  }
  .nav-search svg{width:16px;height:16px;color:var(--text-3);flex-shrink:0;}
  .nav-search input{
    width:130px;background:transparent;border:0;outline:none;
    color:var(--text);font-size:13.5px;font-family:inherit;
  }
  .nav-search input::placeholder{color:var(--text-3);}
  .nav-search:focus-within{border-color:rgba(33,230,193,0.6);box-shadow:0 0 0 4px rgba(33,230,193,0.14);}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;
    border-radius:var(--r-btn);
    font-family:inherit;font-size:14.5px;font-weight:600;
    border:1px solid transparent;
    cursor:pointer;white-space:nowrap;
    transition:transform .16s ease, box-shadow .16s ease, background-color .16s ease, color .16s ease, border-color .16s ease;
  }
  .btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .btn-primary{
    background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);
    color:#05121A;
    box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(33,230,193,0.6),0 14px 38px -8px rgba(33,230,193,0.62);}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(33,230,193,0.45),0 6px 18px -8px rgba(33,230,193,0.5);}
  .btn-ghost{
    background:rgba(18,28,45,0.55);
    border-color:rgba(33,230,193,0.45);
    color:var(--accent);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent-2);background:rgba(33,230,193,0.10);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-sm{height:38px;padding:0 16px;font-size:13.5px;}
  .btn-block{width:100%;}

  .header-cta{height:38px;padding:0 16px;font-size:13.5px;}

  .menu-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:12px;
    background:rgba(18,28,45,0.6);border:1px solid var(--line);
    color:var(--text);cursor:pointer;
    transition:border-color .18s ease;
  }
  .menu-toggle svg{width:20px;height:20px;}
  .menu-toggle:hover{border-color:var(--line-strong);}

  @media (min-width:1024px){
    .main-nav{display:flex;}
    .menu-toggle{display:none;}
  }
  @media (min-width:1024px) and (max-width:1199px){
    .nav-search input{width:96px;}
    .nav-link{font-size:13px;padding:8px 7px;}
    .header-left{gap:16px;}
  }

  /* ---------- Drawer ---------- */
  .drawer-mask{
    position:fixed;inset:0;z-index:90;
    background:rgba(3,6,12,0.6);
    backdrop-filter:blur(6px);
    -webkit-backdrop-filter:blur(6px);
    opacity:0;pointer-events:none;
    transition:opacity .22s ease;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto;}
  .side-drawer{
    position:fixed;top:0;right:0;bottom:0;z-index:95;
    width:min(360px,86vw);
    padding:20px;
    background:rgba(8,14,26,0.96);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .26s cubic-bezier(.3,.8,.3,1);
    overflow-y:auto;
  }
  .side-drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
  .drawer-close{
    width:44px;height:44px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    background:rgba(18,28,45,0.7);border:1px solid var(--line);
    color:var(--text);cursor:pointer;
  }
  .drawer-close svg{width:18px;height:18px;}
  .drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px;}
  .drawer-nav a{
    padding:12px 14px;border-radius:12px;
    font-size:15px;color:var(--text-2);
    border:1px solid transparent;
    transition:background-color .18s ease,color .18s ease,border-color .18s ease;
  }
  .drawer-nav a:hover{background:rgba(120,160,220,0.08);color:var(--text);}
  .drawer-nav a.active{color:var(--accent);background:rgba(33,230,193,0.08);border-color:rgba(33,230,193,0.28);}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;
    border-radius:12px;background:rgba(18,28,45,0.7);border:1px solid var(--line);
    margin-bottom:18px;
  }
  .drawer-search svg{width:16px;height:16px;color:var(--text-3);}
  .drawer-search input{flex:1;background:transparent;border:0;outline:none;color:var(--text);font-size:14px;font-family:inherit;}
  .drawer-actions{display:flex;flex-direction:column;gap:10px;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    padding-top:108px;
    padding-bottom:64px;
    overflow:hidden;
  }
  .hero::before{
    content:"";
    position:absolute;
    top:-220px;left:-10%;
    width:60%;height:520px;
    background:radial-gradient(closest-side, rgba(46,107,255,0.24), rgba(46,107,255,0));
    pointer-events:none;
  }
  .hero::after{
    content:"";
    position:absolute;
    top:120px;right:-8%;
    width:46%;height:420px;
    background:radial-gradient(closest-side, rgba(33,230,193,0.16), rgba(33,230,193,0));
    pointer-events:none;
  }
  .hero-inner{position:relative;z-index:2;}
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--text-3);margin-bottom:20px;
  }
  .breadcrumb a{color:var(--text-2);transition:color .18s ease;}
  .breadcrumb a:hover{color:var(--accent);}
  .breadcrumb .sep{color:var(--text-3);}
  .breadcrumb .current{color:var(--text);}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 12px;border-radius:999px;
    background:rgba(33,230,193,0.10);
    border:1px solid rgba(33,230,193,0.28);
    color:var(--accent);
    font-size:12.5px;
    letter-spacing:0.06em;
    margin-bottom:18px;
  }
  .eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);}

  .hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
  .hero-title{
    font-size:clamp(32px,5vw,52px);
    line-height:1.15;
    font-weight:800;
    letter-spacing:-0.02em;
    margin:0 0 18px;
    color:var(--text);
  }
  .hero-title em{
    font-style:normal;
    background:linear-gradient(100deg,var(--accent),var(--mint));
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .hero-sub{
    font-size:16px;color:var(--text-2);line-height:1.9;
    max-width:560px;margin:0 0 26px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px;}
  .hero-metrics{
    display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
    gap:14px;padding-top:20px;border-top:1px solid var(--line);
  }
  .hero-metric .m-value{
    font-family:var(--font-mono);font-variant-numeric:tabular-nums;
    font-size:24px;font-weight:700;color:var(--text);display:block;line-height:1.2;
  }
  .hero-metric .m-value small{font-size:13px;color:var(--text-3);font-weight:500;margin-left:2px;}
  .hero-metric .m-label{font-size:12.5px;color:var(--text-3);}

  .hero-visual{
    position:relative;
    border-radius:var(--r-glass);
    overflow:hidden;
    min-height:240px;
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    background:var(--panel);
  }
  .hero-img{width:100%;height:100%;min-height:240px;object-fit:cover;display:block;}
  .hero-visual-mask{
    position:absolute;inset:0;
    background:linear-gradient(to top, rgba(3,6,12,0.92) 0%, rgba(3,6,12,0.35) 45%, rgba(3,6,12,0.12) 100%);
  }
  .float-card{
    position:absolute;
    border-radius:14px;
    padding:12px 14px;
    background:var(--glass);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border:1px solid var(--line);
    box-shadow:0 16px 32px -18px rgba(0,0,0,0.8);
  }
  .float-card-a{left:16px;bottom:16px;min-width:168px;}
  .float-card-b{right:16px;top:16px;min-width:150px;}
  .float-label{display:block;font-size:11.5px;color:var(--text-3);letter-spacing:0.08em;}
  .float-value{font-size:22px;font-weight:700;color:var(--accent);line-height:1.3;}
  .float-unit{font-size:12px;color:var(--text-3);font-weight:500;margin-left:2px;}
  .bars{display:flex;align-items:flex-end;gap:4px;height:34px;margin-top:10px;}
  .bars i{
    display:block;width:8px;border-radius:3px;
    background:linear-gradient(180deg,var(--accent),rgba(46,107,255,0.55));
    opacity:.85;
  }
  .float-list{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-direction:column;gap:5px;}
  .float-list li{font-size:12px;color:var(--text-2);display:flex;align-items:center;gap:6px;}
  .dot-ok{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px rgba(53,208,127,0.8);}
  .dot-warn{width:6px;height:6px;border-radius:50%;background:var(--warn);box-shadow:0 0 8px rgba(255,176,32,0.8);}

  @media (min-width:1024px){
    .hero{padding-top:128px;padding-bottom:88px;}
    .hero-grid{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;}
    .hero-visual{min-height:420px;}
    .hero-img{min-height:420px;}
  }

  /* ---------- Sections ---------- */
  .section{padding-top:64px;padding-bottom:64px;position:relative;}
  .section-alt{background:linear-gradient(180deg, rgba(10,18,32,0.65), rgba(5,8,15,0));}
  @media (min-width:1024px){
    .section{padding-top:92px;padding-bottom:92px;}
  }
  .section-head{max-width:760px;margin-bottom:36px;}
  .section-label{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;color:var(--accent);letter-spacing:0.14em;
    margin-bottom:12px;
  }
  .section-label::before{content:"";width:2px;height:14px;border-radius:2px;background:var(--accent);}
  .section-title{
    font-size:clamp(24px,3vw,34px);
    font-weight:700;line-height:1.3;letter-spacing:-0.015em;
    margin:0 0 12px;color:var(--text);
  }
  .section-desc{font-size:15.5px;color:var(--text-2);margin:0;}

  .layout-8-4{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:1024px){
    .layout-8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;}
    .sidebar-sticky{position:sticky;top:96px;}
  }

  /* ---------- Checklist ---------- */
  .checklist{border-top:1px solid var(--line);}
  .check-item{
    display:grid;
    grid-template-columns:auto minmax(0,1fr);
    gap:16px;
    padding:22px 0;
    border-bottom:1px solid var(--line);
    transition:background-color .18s ease;
  }
  .check-item:hover{background:rgba(120,160,220,0.045);}
  .check-num{
    font-family:var(--font-mono);
    font-variant-numeric:tabular-nums;
    font-size:22px;font-weight:700;
    color:var(--accent);
    line-height:1.4;
    min-width:44px;
  }
  .check-body h3{
    margin:0 0 8px;
    font-size:17.5px;font-weight:600;color:var(--text);letter-spacing:-0.01em;
  }
  .check-body p{margin:0 0 10px;font-size:14.8px;color:var(--text-2);line-height:1.85;}
  .check-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13.5px;color:var(--accent);
    border-bottom:1px dashed rgba(33,230,193,0.5);
    padding-bottom:2px;
    transition:color .18s ease,border-color .18s ease;
  }
  .check-link:hover{color:var(--accent-2);border-color:var(--accent-2);}
  .check-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px;}
  .tag{
    display:inline-flex;align-items:center;
    padding:3px 10px;border-radius:999px;
    font-size:11.5px;
    background:rgba(120,160,220,0.10);
    border:1px solid var(--line);
    color:var(--text-3);
  }
  .tag-accent{background:rgba(33,230,193,0.10);border-color:rgba(33,230,193,0.28);color:var(--accent);}
  .tag-warn{background:rgba(255,122,69,0.10);border-color:rgba(255,122,69,0.32);color:var(--energy);}

  .check-metric{
    grid-column:2;
    display:flex;gap:22px;flex-wrap:wrap;
    margin-top:12px;padding-top:12px;border-top:1px dashed rgba(120,160,220,0.16);
  }
  .check-metric span{font-size:12.5px;color:var(--text-3);}
  .check-metric b{
    font-family:var(--font-mono);font-variant-numeric:tabular-nums;
    font-size:14px;color:var(--text);font-weight:600;margin-left:6px;
  }
  @media (min-width:1024px){
    .check-item{grid-template-columns:auto minmax(0,1fr) 190px;gap:24px;padding:26px 0;}
    .check-metric{
      grid-column:3;
      flex-direction:column;gap:10px;
      margin-top:0;padding-top:0;border-top:0;
      border-left:1px solid var(--line);
      padding-left:20px;
      align-self:center;
    }
  }

  /* ---------- Sidebar ---------- */
  .side-card{
    border-radius:var(--r-glass);
    background:var(--glass);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    padding:22px;
    margin-bottom:20px;
  }
  .side-card h3{margin:0 0 14px;font-size:16px;font-weight:600;color:var(--text);}
  .side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
  .side-list li a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:10px 10px;border-radius:10px;
    font-size:14px;color:var(--text-2);
    transition:background-color .18s ease,color .18s ease;
  }
  .side-list li a:hover{background:rgba(33,230,193,0.08);color:var(--accent);}
  .side-list li a span{margin-left:auto;color:var(--text-3);font-family:var(--font-mono);font-size:12px;}
  .side-mini p{font-size:13.5px;color:var(--text-2);margin:0 0 12px;}
  .side-thumb{border-radius:var(--r-img);overflow:hidden;margin-bottom:14px;border:1px solid var(--line);}
  .side-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;}
  .side-contact{font-size:13.5px;color:var(--text-2);}

  /* ---------- Cards / compare ---------- */
  .entry-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media (min-width:768px){ .entry-grid{grid-template-columns:repeat(3,minmax(0,1fr));} }
  .entry-card{
    position:relative;
    border-radius:var(--r-card);
    background:var(--glass);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    padding:24px 22px 22px;
    overflow:hidden;
    transition:transform .18s ease, border-color .18s ease, box-shadow .18s ease;
  }
  .entry-card::before{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,rgba(33,230,193,0),rgba(33,230,193,0.85),rgba(33,230,193,0));
  }
  .entry-card:hover{transform:translateY(-2px);border-color:rgba(33,230,193,0.40);box-shadow:0 26px 46px -22px rgba(0,0,0,0.85),0 0 0 1px rgba(33,230,193,0.18);}
  .entry-card h3{margin:14px 0 8px;font-size:18px;font-weight:600;color:var(--text);}
  .entry-card p{margin:0 0 16px;font-size:14.5px;color:var(--text-2);}
  .entry-icon{
    width:42px;height:42px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    background:rgba(33,230,193,0.10);
    border:1px solid rgba(33,230,193,0.28);
    color:var(--accent);
  }
  .entry-icon svg{width:21px;height:21px;}
  .entry-kv{display:flex;flex-direction:column;gap:8px;padding-top:14px;border-top:1px solid var(--line);}
  .entry-kv div{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);}
  .entry-kv b{font-family:var(--font-mono);color:var(--text);font-weight:600;}

  .compare{margin-top:28px;border-radius:var(--r-glass);border:1px solid var(--line);background:var(--panel);padding:24px;}
  .compare-row{display:grid;grid-template-columns:1fr;gap:10px;padding:14px 0;border-bottom:1px solid var(--line);}
  .compare-row:last-child{border-bottom:0;padding-bottom:0;}
  .compare-name{font-size:13.5px;color:var(--text-2);}
  .bar-wrap{display:flex;flex-direction:column;gap:8px;}
  .bar-line{display:flex;align-items:center;gap:10px;}
  .bar-label{font-size:12px;color:var(--text-3);min-width:66px;}
  .bar-track{flex:1;height:8px;border-radius:999px;background:rgba(120,160,220,0.14);overflow:hidden;}
  .bar-fill{display:block;height:100%;border-radius:999px;}
  .bar-fill.grey{background:rgba(120,160,220,0.42);}
  .bar-fill.accent{background:linear-gradient(90deg,var(--brand),var(--accent));box-shadow:0 0 14px -2px rgba(33,230,193,0.7);}
  .bar-value{font-family:var(--font-mono);font-size:12.5px;color:var(--text);min-width:44px;text-align:right;}
  @media (min-width:768px){
    .compare-row{grid-template-columns:150px minmax(0,1fr);align-items:center;gap:20px;}
  }

  /* ---------- Blocking list ---------- */
  .issue-grid{display:grid;grid-template-columns:1fr;gap:16px;}
  @media (min-width:768px){ .issue-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  .issue-item{
    display:flex;gap:14px;
    padding:18px;
    border-radius:var(--r-card);
    background:rgba(10,18,32,0.75);
    border:1px solid var(--line);
    transition:border-color .18s ease, background-color .18s ease, transform .18s ease;
  }
  .issue-item:hover{border-color:rgba(33,230,193,0.32);background:rgba(18,28,45,0.72);transform:translateY(-2px);}
  .issue-mark{
    flex-shrink:0;width:10px;height:10px;border-radius:3px;margin-top:8px;
    background:var(--accent);box-shadow:0 0 12px rgba(33,230,193,0.7);
  }
  .issue-mark.warn{background:var(--warn);box-shadow:0 0 12px rgba(255,176,32,0.7);}
  .issue-mark.err{background:var(--energy);box-shadow:0 0 12px rgba(255,122,69,0.7);}
  .issue-item h3{margin:0 0 6px;font-size:16px;font-weight:600;color:var(--text);}
  .issue-item p{margin:0;font-size:14px;color:var(--text-2);}

  /* ---------- FAQ ---------- */
  .faq-list{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;
    display:grid;
    grid-template-columns:auto minmax(0,1fr) auto;
    align-items:center;
    gap:16px;
    padding:20px 4px;
    background:transparent;border:0;
    text-align:left;cursor:pointer;
    font-family:inherit;color:var(--text);
    transition:background-color .18s ease;
  }
  .faq-q:hover{background:rgba(120,160,220,0.05);}
  .faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .faq-idx{
    font-family:var(--font-mono);font-variant-numeric:tabular-nums;
    font-size:15px;color:var(--text-3);min-width:34px;
    transition:color .18s ease;
  }
  .faq-text{font-size:16px;font-weight:600;line-height:1.7;}
  .faq-arrow{
    width:26px;height:26px;flex-shrink:0;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:8px;border:1px solid var(--line);
    color:var(--text-3);font-size:15px;line-height:1;
    transition:transform .22s ease,color .18s ease,border-color .18s ease;
  }
  .faq-item.is-open .faq-idx{color:var(--accent);}
  .faq-item.is-open .faq-arrow{transform:rotate(45deg);color:var(--accent);border-color:rgba(33,230,193,0.5);}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .28s ease;
  }
  .faq-a-inner{padding:0 4px 22px 50px;}
  .faq-a p{margin:0 0 10px;font-size:14.8px;color:var(--text-2);line-height:1.9;}
  .faq-a p:last-child{margin-bottom:0;}

  /* ---------- CTA / form ---------- */
  .cta-panel{
    border-radius:var(--r-glass);
    background:linear-gradient(160deg, rgba(18,28,45,0.82), rgba(10,18,32,0.86));
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    padding:30px 22px;
    position:relative;
    overflow:hidden;
  }
  .cta-panel::before{
    content:"";position:absolute;top:-120px;right:-60px;width:320px;height:320px;
    background:radial-gradient(closest-side, rgba(33,230,193,0.20), rgba(33,230,193,0));
    pointer-events:none;
  }
  .cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:1024px){ .cta-grid{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;} }
  .cta-copy h2{margin:0 0 14px;font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;letter-spacing:-0.015em;}
  .cta-copy p{font-size:15px;color:var(--text-2);margin:0 0 20px;}
  .cta-points{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
  .cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);}
  .cta-points svg{width:16px;height:16px;color:var(--accent);flex-shrink:0;margin-top:5px;}

  .form-grid{display:grid;grid-template-columns:1fr;gap:16px;}
  @media (min-width:640px){ .form-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  .field{display:flex;flex-direction:column;gap:8px;}
  .field-full{grid-column:1 / -1;}
  .field label{font-size:13.5px;color:var(--text-2);}
  .field input,.field select,.field textarea{
    width:100%;
    padding:13px 14px;
    border-radius:12px;
    background:rgba(10,18,32,0.85);
    border:1px solid var(--line);
    color:var(--text);
    font-family:inherit;font-size:14.5px;
    outline:none;
    transition:border-color .18s ease, box-shadow .18s ease, background-color .18s ease;
  }
  .field textarea{min-height:118px;resize:vertical;}
  .field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 55%,calc(100% - 15px) 55%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
  .field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
  .field input:focus,.field select:focus,.field textarea:focus{
    border-color:var(--accent);
    box-shadow:0 0 0 6px rgba(33,230,193,0.14);
    background:rgba(18,28,45,0.85);
  }
  .field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--err);}
  .field-error{font-size:12.5px;color:var(--err);display:none;}
  .field.has-error .field-error{display:block;}

  .consent{display:flex;align-items:flex-start;gap:10px;grid-column:1 / -1;font-size:13px;color:var(--text-3);}
  .consent input{width:16px;height:16px;margin-top:4px;accent-color:#21E6C1;flex-shrink:0;}
  .form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:4px;}
  .form-note{font-size:12.5px;color:var(--text-3);}
  .form-status{
    grid-column:1 / -1;
    display:none;
    align-items:center;gap:10px;
    padding:13px 16px;border-radius:12px;
    font-size:14px;
    background:rgba(53,208,127,0.10);
    border:1px solid rgba(53,208,127,0.35);
    color:#9BF0C4;
  }
  .form-status.is-visible{display:flex;}
  .form-status svg{width:17px;height:17px;flex-shrink:0;}
  .btn.is-loading{pointer-events:none;opacity:.78;}
  .btn .spinner{
    display:none;width:15px;height:15px;border-radius:50%;
    border:2px solid rgba(5,18,26,0.35);
    border-top-color:#05121A;
    animation:spin .7s linear infinite;
  }
  .btn.is-loading .spinner{display:inline-block;}
  @keyframes spin{to{transform:rotate(360deg);}}

  /* ---------- Footer ---------- */
  .site-footer{
    background:var(--deep);
    border-top:1px solid var(--line);
    padding-top:52px;
    padding-bottom:26px;
    margin-top:20px;
  }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:36px;border-bottom:1px solid var(--line);}
  @media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;} }
  .footer-brand p{font-size:13.8px;color:var(--text-3);margin:16px 0 0;max-width:340px;line-height:1.85;}
  .footer-col h4{margin:0 0 16px;font-size:14px;font-weight:600;color:var(--text);letter-spacing:0.03em;}
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
  .footer-col ul li a{font-size:13.8px;color:var(--text-2);transition:color .18s ease;}
  .footer-col ul li a:hover{color:var(--brand-hi);}
  .footer-col p{font-size:13.5px;color:var(--text-3);margin:0;}
  .footer-col p a{color:var(--text-2);transition:color .18s ease;}
  .footer-col p a:hover{color:var(--brand-hi);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
    padding-top:22px;font-size:13px;color:var(--text-3);
  }
  .footer-bottom a{color:var(--text-2);}
  .footer-bottom a:hover{color:var(--brand-hi);}

  .glass{
    background:var(--glass);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
  }
  .hairline{height:1px;background:linear-gradient(90deg,rgba(33,230,193,0),rgba(33,230,193,0.55),rgba(33,230,193,0));border:0;}

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  }

  @media (max-width:639px){
    .hero-visual{min-height:220px;}
    .hero-img{min-height:220px;}
    .float-card-b{top:12px;right:12px;padding:10px 12px;min-width:132px;}
    .float-card-a{left:12px;bottom:12px;padding:10px 12px;min-width:150px;}
    .hero-actions .btn{width:100%;}
    .faq-a-inner{padding-left:4px;}
  }

/* roulang page: category2 */
:root{
  --bg:#05080F;
  --bg-raised:#0A1220;
  --bg-deep:#03060C;
  --primary:#2E6BFF;
  --primary-hover:#4A80FF;
  --primary-press:#1E4FD8;
  --accent:#21E6C1;
  --accent-soft:#7CF7E0;
  --energy:#FF7A45;
  --text:#EAF1FF;
  --text-2:#A9B8D0;
  --text-3:#6C7C96;
  --stroke:rgba(120,160,220,.16);
  --stroke-strong:rgba(33,230,193,.42);
  --success:#35D07F;
  --warning:#FFB020;
  --error:#FF5C6C;
  --glass:rgba(18,28,45,.55);
  --radius-card:16px;
  --radius-glass:20px;
  --radius-img:12px;
  --radius-btn:12px;
  --shadow-card:0 20px 40px -20px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.06);
  --glow-btn:0 0 0 1px rgba(33,230,193,.45), 0 8px 30px -6px rgba(33,230,193,.5);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button,input,select,textarea{ font:inherit; color:inherit; }
h1,h2,h3,h4,p,ul,ol,figure{ margin:0; }
ul,ol{ padding:0; list-style:none; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; border-radius:6px; }

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){ .container{ padding:0 24px; } }
@media (min-width:1024px){ .container{ padding:0 32px; } }

/* ---------- header ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:60;
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.scrolled{
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:rgba(33,230,193,.22);
  box-shadow:0 16px 40px -30px rgba(33,230,193,.6);
}
.header-grid{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  height:64px;
}
.header-left{ display:flex; align-items:center; gap:30px; min-width:0; }
.header-right{ display:flex; align-items:center; gap:14px; }

.logo{ display:inline-flex; align-items:center; gap:10px; flex:0 0 auto; }
.logo-mark{
  width:36px; height:36px;
  border-radius:11px;
  display:grid; place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 0 1px rgba(33,230,193,.35), 0 10px 24px -10px rgba(33,230,193,.6);
}
.logo-mark svg{ width:20px; height:20px; }
.logo-text{ display:flex; flex-direction:column; line-height:1.15; }
.logo-text b{ font-size:15px; font-weight:700; color:var(--text); white-space:nowrap; }
.logo-text span{ font-size:11px; color:var(--text-3); letter-spacing:.16em; }

.main-nav{ display:flex; align-items:center; gap:26px; }
.nav-link{
  position:relative;
  font-size:14px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
  transition:color .18s ease;
}
.nav-link::after{
  content:'';
  position:absolute; left:0; right:0; bottom:-4px;
  height:2px; border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--primary));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease;
}
.nav-link:hover,.nav-link.active{ color:var(--text); }
.nav-link:hover::after,.nav-link.active::after{ transform:scaleX(1); }

.nav-search{
  display:flex; align-items:center; gap:8px;
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--radius-btn);
  padding:8px 12px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:border-color .18s ease, box-shadow .18s ease;
}
.nav-search:focus-within{ border-color:var(--stroke-strong); box-shadow:0 0 0 5px rgba(33,230,193,.12); }
.nav-search svg{ width:16px; height:16px; color:var(--text-3); flex:0 0 auto; }
.nav-search input{
  background:transparent; border:0; outline:none;
  font-size:13px; width:156px; color:var(--text);
}
.nav-search input::placeholder{ color:var(--text-3); }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  border-radius:var(--radius-btn);
  font-size:14px; font-weight:600;
  padding:11px 20px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#05121A;
  box-shadow:var(--glow-btn);
}
.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(33,230,193,.6), 0 14px 40px -6px rgba(33,230,193,.7);
}
.btn-primary:active{ transform:translateY(1px); box-shadow:0 0 0 1px rgba(33,230,193,.5), 0 6px 18px -6px rgba(33,230,193,.5); }
.btn-ghost{
  background:rgba(18,28,45,.5);
  border-color:rgba(33,230,193,.42);
  color:var(--accent);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.btn-ghost:hover{ background:rgba(33,230,193,.1); border-color:rgba(33,230,193,.72); }
.btn-ghost:active{ transform:translateY(1px); }
.btn-block{ width:100%; }

.menu-toggle{
  display:none;
  width:44px; height:44px;
  align-items:center; justify-content:center;
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--radius-btn);
  color:var(--text);
  cursor:pointer;
}
.menu-toggle svg{ width:22px; height:22px; }

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed; inset:0; z-index:70;
  background:rgba(3,6,12,.6);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  opacity:0; pointer-events:none;
  transition:opacity .25s ease;
}
.drawer-mask.open{ opacity:1; pointer-events:auto; }
.drawer{
  position:fixed; top:0; right:0; z-index:80;
  height:100%;
  width:min(340px,88vw);
  padding:20px;
  display:flex; flex-direction:column; gap:20px;
  background:rgba(10,18,32,.95);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-left:1px solid var(--stroke);
  transform:translateX(102%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.drawer.open{ transform:translateX(0); }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; gap:12px; }
.drawer-close{
  width:44px; height:44px; display:grid; place-items:center;
  background:rgba(18,28,45,.7); border:1px solid var(--stroke);
  border-radius:var(--radius-btn); color:var(--text); cursor:pointer;
}
.drawer-close svg{ width:20px; height:20px; }
.drawer-nav{ display:flex; flex-direction:column; }
.drawer-nav a{
  padding:14px 2px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--stroke);
  transition:color .18s ease, padding-left .18s ease;
}
.drawer-nav a:hover{ color:var(--accent); padding-left:6px; }
.drawer-nav a.active{ color:var(--text); font-weight:600; }
.drawer-search{
  display:flex; align-items:center; gap:8px;
  background:rgba(18,28,45,.7);
  border:1px solid var(--stroke);
  border-radius:var(--radius-btn);
  padding:12px 14px;
}
.drawer-search svg{ width:16px; height:16px; color:var(--text-3); }
.drawer-search input{ flex:1; background:transparent; border:0; outline:none; font-size:14px; }
.drawer-search input::placeholder{ color:var(--text-3); }

@media (max-width:1023px){
  .main-nav,.nav-search,.header-cta{ display:none; }
  .menu-toggle{ display:inline-flex; }
  .header-grid{ height:56px; }
}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:112px 0 60px;
  overflow:hidden;
  background:
    radial-gradient(1100px 520px at 82% -10%, rgba(33,230,193,.16), transparent 62%),
    radial-gradient(900px 480px at 8% 0%, rgba(46,107,255,.20), transparent 60%),
    var(--bg);
}
.page-hero::before{
  content:'';
  position:absolute; inset:0;
  background-image:linear-gradient(180deg, rgba(5,8,15,.72) 0%, rgba(5,8,15,.9) 62%, var(--bg) 100%), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.42;
  pointer-events:none;
}
.page-hero .container{ position:relative; z-index:2; }
@media (min-width:1024px){ .page-hero{ padding:152px 0 84px; } }

.breadcrumb{
  display:flex; flex-wrap:wrap; align-items:center; gap:8px;
  font-size:13px; color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{ color:var(--text-2); transition:color .18s ease; }
.breadcrumb a:hover{ color:var(--accent); }
.breadcrumb .sep{ color:var(--text-3); opacity:.6; }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--stroke);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  font-size:12px; letter-spacing:.08em;
  color:var(--accent);
  margin-bottom:20px;
}
.eyebrow .dot{
  width:6px; height:6px; border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px 2px rgba(33,230,193,.7);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{ 0%,100%{ opacity:1; } 50%{ opacity:.35; } }

.hero-title{
  font-size:clamp(32px,4.8vw,54px);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero-title .hl{
  background:linear-gradient(120deg,var(--accent),var(--primary-hover));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lede{
  max-width:720px;
  font-size:16px;
  color:var(--text-2);
  line-height:1.9;
}
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:30px; }

.hero-stats{
  display:flex; flex-wrap:wrap; gap:14px 40px;
  margin-top:38px;
  padding-top:26px;
  border-top:1px solid var(--stroke);
}
.hero-stat .num{
  font-family:'ui-monospace','SFMono-Regular','JetBrains Mono',Menlo,monospace;
  font-variant-numeric:tabular-nums;
  font-size:26px; font-weight:700; letter-spacing:-.01em;
  color:var(--text);
}
.hero-stat .lbl{ font-size:13px; color:var(--text-3); margin-top:2px; }

/* ---------- sections ---------- */
.section{ padding:60px 0; }
@media (min-width:1024px){ .section{ padding:96px 0; } }
.section-head{ margin-bottom:36px; }
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
}
.section-head h2::before{
  content:'';
  display:inline-block;
  width:3px; height:22px;
  margin-right:14px;
  vertical-align:-2px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--accent),var(--primary));
}
.section-head p{
  margin-top:14px;
  max-width:760px;
  color:var(--text-2);
  font-size:15px;
}

.glass{
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--radius-glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
}
.hairline{ height:1px; background:var(--stroke); border:0; margin:0; }

/* platform cards */
.plat-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:18px;
}
@media (min-width:640px){ .plat-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .plat-grid{ grid-template-columns:repeat(3,1fr); } }
.plat-card{
  position:relative;
  padding:26px 24px 28px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--stroke);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
  transition:border-color .18s ease, transform .18s ease;
}
.plat-card::before{
  content:'';
  position:absolute; top:0; left:18px; right:18px;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(33,230,193,.75), transparent);
}
.plat-card:hover{ transform:translateY(-2px); border-color:rgba(33,230,193,.4); }
.plat-icon{
  width:42px; height:42px; border-radius:12px;
  display:grid; place-items:center;
  background:rgba(46,107,255,.16);
  border:1px solid rgba(46,107,255,.32);
  color:var(--accent-soft);
  margin-bottom:16px;
}
.plat-icon svg{ width:21px; height:21px; }
.plat-card h3{ font-size:18px; font-weight:600; margin-bottom:10px; }
.plat-card p{ font-size:14px; color:var(--text-2); line-height:1.8; }
.plat-meta{
  display:flex; flex-wrap:wrap; gap:8px;
  margin-top:16px;
}
.tag{
  display:inline-flex; align-items:center;
  padding:4px 10px;
  font-size:12px;
  border-radius:999px;
  background:rgba(18,28,45,.7);
  border:1px solid var(--stroke);
  color:var(--accent);
}
.tag.neutral{ color:var(--text-2); }

/* zigzag */
.zigzag-list{ display:flex; flex-direction:column; gap:36px; }
@media (min-width:1024px){ .zigzag-list{ gap:64px; } }
.zigzag{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
  align-items:center;
}
@media (min-width:1024px){
  .zigzag{ grid-template-columns:1fr 1fr; gap:56px; }
  .zigzag.reverse .zz-media{ order:2; }
}
.zz-media{ position:relative; }
.zz-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-card);
}
.zz-badge{
  position:absolute;
  left:14px; bottom:14px;
  display:inline-flex; align-items:center; gap:8px;
  padding:7px 13px;
  border-radius:999px;
  background:rgba(5,8,15,.72);
  border:1px solid rgba(33,230,193,.35);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  font-size:12px;
  color:var(--accent);
}
.zz-body h3{
  font-size:clamp(20px,2.4vw,26px);
  font-weight:700;
  line-height:1.35;
  margin-bottom:12px;
}
.zz-body > p{ font-size:15px; color:var(--text-2); }
.zz-points{ margin-top:20px; display:flex; flex-direction:column; gap:14px; }
.zz-points li{
  display:flex; gap:12px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
}
.zz-points .idx{
  flex:0 0 auto;
  width:24px; height:24px;
  margin-top:3px;
  border-radius:8px;
  display:grid; place-items:center;
  font-family:'ui-monospace',Menlo,monospace;
  font-size:12px;
  color:var(--accent);
  background:rgba(33,230,193,.1);
  border:1px solid rgba(33,230,193,.3);
}
.zz-points b{ color:var(--text); font-weight:600; }

/* 8:4 layout */
.split{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
@media (min-width:1024px){
  .split{ grid-template-columns:8fr 4fr; gap:26px; align-items:start; }
}
.panel{
  padding:26px 24px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--stroke);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
}
.panel h3{ font-size:18px; font-weight:600; margin-bottom:16px; }
.check-list{ display:flex; flex-direction:column; }
.check-list li{
  display:flex; gap:14px;
  padding:16px 0;
  border-bottom:1px solid var(--stroke);
  font-size:14.5px;
  color:var(--text-2);
}
.check-list li:last-child{ border-bottom:0; padding-bottom:0; }
.check-list li:first-child{ padding-top:0; }
.check-mark{
  flex:0 0 auto; width:22px; height:22px; margin-top:4px;
  border-radius:7px; display:grid; place-items:center;
  background:rgba(33,230,193,.12);
  border:1px solid rgba(33,230,193,.35);
  color:var(--accent);
}
.check-mark svg{ width:13px; height:13px; }
.check-list b{ color:var(--text); font-weight:600; display:block; margin-bottom:2px; }

.side-card{
  padding:24px;
  border-radius:var(--radius-card);
  background:linear-gradient(160deg, rgba(46,107,255,.16), rgba(33,230,193,.08));
  border:1px solid rgba(33,230,193,.24);
  box-shadow:var(--shadow-card);
}
.side-card h3{ font-size:17px; font-weight:600; margin-bottom:12px; }
.side-card p{ font-size:14px; color:var(--text-2); }
.side-card .side-actions{ margin-top:18px; display:flex; flex-direction:column; gap:10px; }
.side-list{ margin-top:16px; display:flex; flex-direction:column; gap:12px; }
.side-list a{
  display:flex; align-items:center; justify-content:space-between;
  gap:10px;
  font-size:14px;
  color:var(--text-2);
  padding-bottom:12px;
  border-bottom:1px solid var(--stroke);
  transition:color .18s ease;
}
.side-list a:last-child{ border-bottom:0; padding-bottom:0; }
.side-list a:hover{ color:var(--accent); }

/* numbered list */
.num-list{ display:flex; flex-direction:column; }
.num-item{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:20px;
  align-items:start;
  padding:24px 0;
  border-bottom:1px solid var(--stroke);
}
.num-item:last-child{ border-bottom:0; }
.num-item .no{
  font-family:'ui-monospace',Menlo,monospace;
  font-variant-numeric:tabular-nums;
  font-size:26px;
  font-weight:700;
  letter-spacing:-.02em;
  color:rgba(33,230,193,.85);
  line-height:1.1;
  min-width:44px;
}
.num-item h3{ font-size:17px; font-weight:600; margin-bottom:8px; }
.num-item p{ font-size:14.5px; color:var(--text-2); }
.num-item .inline-link{
  display:inline-flex; align-items:center; gap:6px;
  margin-top:12px;
  font-size:13.5px;
  color:var(--accent);
}
.num-item .inline-link:hover{ color:var(--accent-soft); }

/* FAQ */
.faq-wrap{ max-width:960px; }
.faq-item{ border-bottom:1px solid var(--stroke); }
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 0;
  background:transparent;
  border:0;
  text-align:left;
  cursor:pointer;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
}
.faq-num{
  font-family:'ui-monospace',Menlo,monospace;
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--text-3);
  flex:0 0 auto;
  transition:color .2s ease;
}
.faq-item.open .faq-num{ color:var(--accent); }
.faq-q .q-text{ flex:1; }
.faq-arrow{
  flex:0 0 auto;
  width:20px; height:20px;
  color:var(--text-3);
  transition:transform .25s ease, color .2s ease;
}
.faq-item.open .faq-arrow{ transform:rotate(180deg); color:var(--accent); }
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 0 22px 30px;
  font-size:14.5px;
  color:var(--text-2);
  max-width:820px;
}
@media (max-width:520px){
  .faq-a p{ padding-left:0; }
}

/* CTA */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-glass);
  border:1px solid rgba(33,230,193,.24);
  background:
    radial-gradient(700px 300px at 12% 0%, rgba(46,107,255,.28), transparent 60%),
    radial-gradient(600px 320px at 92% 100%, rgba(33,230,193,.2), transparent 60%),
    var(--bg-raised);
  box-shadow:var(--shadow-card);
  padding:36px 24px;
}
@media (min-width:1024px){ .cta-band{ padding:52px 48px; } }
.cta-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:30px;
}
@media (min-width:1024px){ .cta-grid{ grid-template-columns:1.05fr .95fr; gap:48px; align-items:center; } }
.cta-band h2{
  font-size:clamp(22px,2.8vw,32px);
  font-weight:700;
  line-height:1.3;
  margin-bottom:14px;
}
.cta-band p{ font-size:15px; color:var(--text-2); max-width:560px; }
.cta-points{ margin-top:20px; display:flex; flex-wrap:wrap; gap:10px; }

.form-card{
  padding:24px;
  border-radius:var(--radius-card);
  background:rgba(5,8,15,.55);
  border:1px solid var(--stroke);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.form-row{ display:grid; grid-template-columns:1fr; gap:16px; }
@media (min-width:640px){ .form-row.two{ grid-template-columns:1fr 1fr; } }
.field{ display:flex; flex-direction:column; gap:8px; margin-bottom:16px; }
.field label{ font-size:13px; color:var(--text-2); }
.field input,.field select,.field textarea{
  width:100%;
  padding:14px;
  background:rgba(18,28,45,.6);
  border:1px solid var(--stroke);
  border-radius:var(--radius-btn);
  color:var(--text);
  font-size:14px;
  outline:none;
  transition:border-color .18s ease, box-shadow .18s ease;
}
.field textarea{ min-height:96px; resize:vertical; line-height:1.7; }
.field input::placeholder,.field textarea::placeholder{ color:var(--text-3); }
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 5px rgba(33,230,193,.14);
}
.field select{ appearance:none; background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%); background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px; background-size:5px 5px,5px 5px; background-repeat:no-repeat; }
.consent{
  display:flex; align-items:flex-start; gap:10px;
  font-size:13px; color:var(--text-3);
  margin:6px 0 18px;
}
.consent input{ margin-top:5px; accent-color:#21E6C1; width:15px; height:15px; }
.form-note{
  margin-top:14px;
  font-size:13px;
  color:var(--success);
  min-height:20px;
}

/* footer */
.site-footer{
  margin-top:20px;
  background:var(--bg-deep);
  border-top:1px solid var(--stroke);
  padding:56px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media (min-width:768px){ .footer-grid{ grid-template-columns:1fr 1fr; gap:36px; } }
@media (min-width:1024px){ .footer-grid{ grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:40px; } }
.footer-brand .logo{ margin-bottom:16px; }
.footer-brand p{ font-size:14px; color:var(--text-2); max-width:360px; line-height:1.9; }
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{ display:flex; flex-direction:column; gap:11px; }
.footer-col a{
  font-size:14px;
  color:var(--text-2);
  transition:color .18s ease;
}
.footer-col a:hover{ color:var(--primary-hover); }
.footer-col p{ font-size:13.5px; color:var(--text-3); }
.footer-col p a{ color:var(--text-2); }
.footer-col p a:hover{ color:var(--primary-hover); }
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--stroke);
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{ color:var(--text-2); }
.footer-bottom a:hover{ color:var(--primary-hover); }

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition-duration:.001ms !important; }
  html{ scroll-behavior:auto; }
}

/* roulang page: category3 */
:root{
  --bg:#05080F;
  --bg-raise:#0A1220;
  --bg-deep:#03060C;
  --brand:#2E6BFF;
  --brand-hover:#4A80FF;
  --brand-active:#1E4FD8;
  --accent:#21E6C1;
  --accent-2:#7CF7E0;
  --warn:#FF7A45;
  --text:#EAF1FF;
  --text-2:#A9B8D0;
  --text-3:#6C7C96;
  --line:rgba(120,160,220,.16);
  --line-strong:rgba(120,160,220,.28);
  --glass:rgba(18,28,45,.55);
  --glass-soft:rgba(18,28,45,.38);
  --success:#35D07F;
  --danger:#FF5C6C;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-img:12px;
  --radius-btn:12px;
  --shadow-card:0 20px 40px -20px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(33,230,193,.45), 0 8px 30px -6px rgba(33,230,193,.5);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"SFMono-Regular",ui-monospace,"JetBrains Mono","Roboto Mono",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,opacity .18s ease;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ============ 通用组件 ============ */
.glass{
  background:var(--glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand),var(--accent));
  color:#05121A;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(33,230,193,.6),0 12px 38px -6px rgba(33,230,193,.62);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(18,28,45,.5);
  border:1px solid rgba(33,230,193,.4);
  color:var(--accent);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{background:rgba(33,230,193,.1);border-color:var(--accent);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;font-weight:600;
  background:rgba(18,28,45,.6);
  border:1px solid var(--line);
  color:var(--accent);
}
.badge-volt{color:var(--brand-hover);}
.badge-ember{color:var(--warn);}

.section{padding:64px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,3.2vw,34px);
  position:relative;padding-left:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--accent),var(--brand));
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px;}

.metric-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.hairline{height:1px;background:var(--line);border:0;margin:0;}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:56px;display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,backdrop-filter .25s ease,border-color .25s ease;
}
@media (min-width:1024px){.site-header{height:64px;}}
.site-header.is-scrolled{
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:rgba(33,230,193,.18);
}
.header-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:20px;align-items:center;width:100%;
}
.header-left{grid-column:span 9;display:flex;align-items:center;gap:28px;min-width:0;}
.header-right{grid-column:span 3;display:flex;align-items:center;justify-content:flex-end;gap:10px;}

.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--accent),var(--brand));
  box-shadow:0 0 0 1px rgba(33,230,193,.35),0 8px 22px -8px rgba(33,230,193,.6);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{display:flex;flex-direction:column;line-height:1.12;}
.logo-text b{font-size:15px;font-weight:700;letter-spacing:-.01em;color:var(--text);}
.logo-text span{font-size:11.5px;color:var(--text-3);letter-spacing:.14em;}

.main-nav{display:none;align-items:center;gap:4px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(120,160,220,.08);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--brand));
  box-shadow:0 0 12px rgba(33,230,193,.6);
}

.nav-search{
  display:none;align-items:center;gap:8px;
  padding:7px 12px;border-radius:999px;
  background:rgba(18,28,45,.55);
  border:1px solid var(--line);
  min-width:190px;
}
.nav-search svg{width:15px;height:15px;color:var(--text-3);flex:0 0 15px;}
.nav-search input{
  background:transparent;border:0;outline:none;width:100%;
  font-size:13.5px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
@media (min-width:1200px){.nav-search{display:flex;}}
.header-cta{display:none;}
@media (min-width:1024px){.header-cta{display:inline-flex;}}

.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  background:rgba(18,28,45,.5);
  color:var(--text);
}
.menu-toggle svg{width:20px;height:20px;}
@media (min-width:1024px){.menu-toggle{display:none;}}

/* 抽屉 */
.drawer-overlay{
  position:fixed;inset:0;z-index:90;
  background:rgba(3,6,12,.6);
  backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-overlay.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:100;
  width:min(88vw,360px);
  padding:20px;
  background:rgba(10,18,32,.96);
  backdrop-filter:blur(18px);
  border-left:1px solid var(--line);
  transform:translateX(105%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  background:rgba(18,28,45,.6);
  color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;font-size:20px;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--line);padding-top:14px;}
.drawer-nav a{
  padding:12px 10px;border-radius:10px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid rgba(120,160,220,.08);
}
.drawer-nav a:hover{background:rgba(120,160,220,.08);color:var(--text);}
.drawer-nav a.active{color:var(--accent);font-weight:600;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;padding-top:16px;}
.drawer-search{display:flex;width:100%;min-width:0;}

/* ============ 页面头 ============ */
.page-hero{
  position:relative;
  padding:104px 0 48px;
  border-bottom:1px solid var(--line);
  background-color:var(--bg);
  background-image:linear-gradient(180deg,rgba(5,8,15,.84) 0%,rgba(5,8,15,.9) 55%,var(--bg) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center 30%;
}
@media (min-width:1024px){.page-hero{padding:128px 0 72px;}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span.sep{color:rgba(108,124,150,.7);}
.page-hero h1{
  font-size:clamp(30px,4.6vw,50px);
  line-height:1.15;letter-spacing:-.02em;
  margin:18px 0 0;
  max-width:900px;
}
.page-hero .lead{
  margin-top:18px;max-width:760px;
  font-size:16px;color:var(--text-2);
}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;margin-top:32px;max-width:720px;
}
.hero-metric{
  padding:14px 16px;border-radius:var(--radius-card);
  background:var(--glass-soft);border:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.hero-metric .metric-num{font-size:26px;color:var(--accent);display:block;}
.hero-metric small{display:block;margin-top:4px;font-size:12.5px;color:var(--text-3);letter-spacing:.04em;}
@media (max-width:520px){
  .hero-metrics{grid-template-columns:1fr 1fr;gap:10px;}
  .hero-metrics .hero-metric:last-child{grid-column:span 2;}
}

/* ============ 模块图标矩阵 ============ */
.module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
@media (min-width:768px){.module-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
@media (min-width:1024px){.module-grid{grid-template-columns:repeat(6,minmax(0,1fr));}}
.module-card{
  padding:18px 16px;border-radius:var(--radius-card);
  background:var(--glass-soft);border:1px solid var(--line);
  transition:border-color .18s ease,transform .18s ease,background-color .18s ease;
}
.module-card:hover{border-color:rgba(33,230,193,.4);transform:translateY(-2px);background:rgba(18,28,45,.6);}
.module-icon{
  width:38px;height:38px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(46,107,255,.14);border:1px solid rgba(46,107,255,.3);
  color:var(--accent);margin-bottom:12px;
}
.module-icon svg{width:19px;height:19px;}
.module-card h3{font-size:15px;font-weight:600;margin-bottom:6px;}
.module-card p{font-size:13px;color:var(--text-3);line-height:1.7;}

/* ============ 主内容 8:4 ============ */
.split{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){
  .split{grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
  .split-main{grid-column:span 8;}
  .split-side{grid-column:span 4;display:flex;flex-direction:column;gap:20px;}
}

/* 时间轴 */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";position:absolute;left:26px;top:14px;bottom:26px;width:1px;
  background:linear-gradient(180deg,rgba(33,230,193,.7),rgba(46,107,255,.4),rgba(120,160,220,.12));
}
.tl-item{position:relative;display:flex;gap:20px;padding-bottom:30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-marker{
  position:relative;z-index:1;flex:0 0 54px;width:54px;height:54px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(10,18,32,.95);
  border:1px solid var(--line-strong);
  color:var(--text-2);
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;
  transition:border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.tl-item:hover .tl-marker{
  border-color:var(--accent);color:var(--accent);
  box-shadow:0 0 0 1px rgba(33,230,193,.35),0 0 22px -4px rgba(33,230,193,.55);
}
.tl-body{
  flex:1 1 auto;min-width:0;
  padding:18px 20px;border-radius:var(--radius-card);
  background:var(--glass-soft);border:1px solid var(--line);
  transition:border-color .2s ease,background-color .2s ease;
}
.tl-item:hover .tl-body{border-color:rgba(33,230,193,.32);background:rgba(18,28,45,.6);}
.tl-body h3{font-size:17.5px;font-weight:600;}
.tl-body p{margin-top:8px;font-size:14.5px;color:var(--text-2);}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tl-tags span{
  font-size:12px;padding:3px 9px;border-radius:999px;
  background:rgba(46,107,255,.12);border:1px solid rgba(46,107,255,.28);
  color:var(--brand-hover);
}
.tl-note{margin-top:10px;font-size:13px;color:var(--text-3);}
.tl-note b{color:var(--accent);font-family:var(--font-mono);font-weight:600;}

/* 侧栏卡 */
.side-card{padding:20px;border-radius:var(--radius-lg);}
.side-card h3{font-size:16px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{
  width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 10px rgba(33,230,193,.8);display:inline-block;flex:0 0 6px;
}
.side-list{display:flex;flex-direction:column;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14px;color:var(--text-2);
  border-bottom:1px solid rgba(120,160,220,.1);
}
.side-list a:last-child{border-bottom:0;}
.side-list a:hover{color:var(--accent);}
.side-list a em{font-style:normal;font-family:var(--font-mono);font-size:12px;color:var(--text-3);}
.side-thumb{border-radius:var(--radius-img);overflow:hidden;margin-bottom:14px;aspect-ratio:16/9;background:#0d1728;}
.side-thumb img{width:100%;height:100%;object-fit:cover;}
.side-card p.small{font-size:13.5px;color:var(--text-3);line-height:1.75;}
.side-card .btn{margin-top:14px;}

/* ============ 对照条 ============ */
.compare{display:grid;grid-template-columns:1fr;gap:14px;}
.compare-row{
  padding:18px 20px;border-radius:var(--radius-card);
  background:var(--glass-soft);border:1px solid var(--line);
}
.compare-row .cr-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px;margin-bottom:14px;}
.compare-row .cr-head h3{font-size:16px;font-weight:600;}
.compare-row .cr-head span{font-size:12.5px;color:var(--text-3);font-family:var(--font-mono);}
.bar-line{display:grid;grid-template-columns:88px 1fr 54px;align-items:center;gap:12px;margin-bottom:10px;}
.bar-line:last-child{margin-bottom:0;}
.bar-label{font-size:13px;color:var(--text-3);}
.bar-track{height:8px;border-radius:999px;background:rgba(120,160,220,.12);overflow:hidden;}
.bar-fill{height:100%;border-radius:999px;}
.bar-fill.plain{background:rgba(120,160,220,.4);}
.bar-fill.bright{background:linear-gradient(90deg,var(--brand),var(--accent));box-shadow:0 0 14px -2px rgba(33,230,193,.7);}
.bar-val{font-size:13px;color:var(--text-2);text-align:right;font-family:var(--font-mono);}
@media (max-width:520px){
  .bar-line{grid-template-columns:70px 1fr 44px;gap:8px;}
}

/* ============ 图文块 ============ */
.feature{display:grid;grid-template-columns:1fr;gap:24px;align-items:center;}
@media (min-width:900px){.feature{grid-template-columns:1.05fr .95fr;gap:44px;}}
.feature-media{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:#0d1728;
}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.feature-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);}
.feature-list li b{
  flex:0 0 22px;width:22px;height:22px;border-radius:7px;margin-top:3px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-family:var(--font-mono);
  background:rgba(33,230,193,.14);color:var(--accent);border:1px solid rgba(33,230,193,.3);
}
.feature-list li span strong{color:var(--text);font-weight:600;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:18px;
  padding:22px 4px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--accent);}
.faq-q .idx{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--text-3);padding-top:4px;flex:0 0 34px;
  transition:color .18s ease;
}
.faq-item.open .faq-q .idx{color:var(--accent);}
.faq-q .chev{
  margin-left:auto;flex:0 0 20px;width:20px;height:20px;color:var(--text-3);
  transition:transform .22s ease,color .22s ease;margin-top:5px;
}
.faq-item.open .faq-q .chev{transform:rotate(180deg);color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 4px 24px 52px;font-size:15px;color:var(--text-2);}
@media (max-width:640px){.faq-a-inner{padding-left:4px;}}

/* ============ CTA / 表单 ============ */
.cta-band{
  border-radius:var(--radius-lg);
  padding:32px 24px;
  background:linear-gradient(135deg,rgba(46,107,255,.16),rgba(33,230,193,.1)),var(--glass);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(16px);
  display:grid;grid-template-columns:1fr;gap:24px;
}
@media (min-width:960px){.cta-band{grid-template-columns:1fr 1.1fr;padding:40px;gap:40px;align-items:start;}}
.cta-band h2{font-size:clamp(22px,3vw,30px);}
.cta-band p.desc{margin-top:12px;color:var(--text-2);font-size:15px;}
.cta-points{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{font-size:14px;color:var(--text-2);display:flex;gap:10px;align-items:flex-start;}
.cta-points li::before{
  content:"";flex:0 0 6px;width:6px;height:6px;margin-top:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 10px rgba(33,230,193,.8);
}
.form-grid{display:grid;grid-template-columns:1fr;gap:16px;}
@media (min-width:640px){.form-grid{grid-template-columns:1fr 1fr;}}
.form-field{display:flex;flex-direction:column;gap:7px;}
.form-field.full{grid-column:1 / -1;}
.form-field label{font-size:13.5px;color:var(--text-2);}
.form-field label i{color:var(--accent);font-style:normal;}
.form-field input,.form-field select,.form-field textarea{
  width:100%;padding:13px 14px;border-radius:12px;
  background:rgba(10,18,32,.7);
  border:1px solid var(--line);
  color:var(--text);font-size:14.5px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.form-field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.form-field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-3);}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 6px rgba(33,230,193,.14);
  background:rgba(10,18,32,.9);
}
.form-field.has-error input,.form-field.has-error textarea{border-color:var(--danger);}
.form-field .err{font-size:13px;color:var(--danger);display:none;}
.form-field.has-error .err{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;grid-column:1 / -1;font-size:13.5px;color:var(--text-2);}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:#21E6C1;}
.form-foot{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
.form-foot .hint{font-size:13px;color:var(--text-3);}
.form-status{grid-column:1 / -1;font-size:14px;display:none;}
.form-status.ok{display:block;color:var(--success);}
.btn.is-loading{opacity:.75;pointer-events:none;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:56px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{font-size:13.5px;color:var(--text-3);line-height:1.8;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:14px;color:var(--text);letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:13.5px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--brand-hover);}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.8;}
.footer-col p a{color:var(--text-2);}
.footer-col p a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:36px;padding-top:18px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--accent);}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --bg:#05080F;
  --surface:#0A1220;
  --deep:#03060C;
  --brand:#2E6BFF;
  --brand-hover:#4A80FF;
  --brand-press:#1E4FD8;
  --pulse:#21E6C1;
  --pulse-soft:#7CF7E0;
  --energy:#FF7A45;
  --ok:#35D07F;
  --warn:#FFB020;
  --err:#FF5C6C;
  --text:#EAF1FF;
  --text-2:#A9B8D0;
  --text-3:#6C7C96;
  --line:rgba(120,160,220,.16);
  --glass:rgba(18,28,45,.55);
  --r-card:16px;
  --r-lg:20px;
  --r-img:12px;
  --r-btn:12px;
  --shadow-card:0 20px 40px -20px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(33,230,193,.45), 0 8px 30px -6px rgba(33,230,193,.5);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(900px 420px at 12% -6%, rgba(46,107,255,.20), transparent 62%),
    radial-gradient(760px 380px at 92% 4%, rgba(33,230,193,.12), transparent 60%);
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--pulse);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
  position:relative;
  z-index:2;
}
@media (min-width:768px){ .container{padding-left:24px;padding-right:24px;} }
@media (min-width:1024px){ .container{padding-left:32px;padding-right:32px;} }

.metric-num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:-.01em;}
.hairline{height:1px;background:linear-gradient(90deg,transparent,rgba(120,160,220,.34),transparent);border:0;margin:0;}
.glass{
  background:linear-gradient(180deg,rgba(28,44,68,.62),rgba(12,20,34,.55));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}

/* ========== Header ========== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:64px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:rgba(33,230,193,.22);
}
.header-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:20px;
  align-items:center;
  height:64px;
}
.header-left{
  grid-column:span 8;
  display:flex;
  align-items:center;
  gap:28px;
  min-width:0;
}
.header-right{
  grid-column:span 4;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:12px;
  min-width:0;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:34px;height:34px;
  border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--pulse) 0%,var(--brand) 100%);
  box-shadow:0 6px 18px -6px rgba(33,230,193,.6);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:15px;font-weight:700;letter-spacing:-.01em;}
.logo-text span{font-size:11px;color:var(--text-3);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:4px;min-width:0;}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14px;
  color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--pulse);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 12px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(18,28,45,.5);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{
  border-color:rgba(33,230,193,.6);
  box-shadow:0 0 0 4px rgba(33,230,193,.12);
}
.nav-search svg{width:16px;height:16px;color:var(--text-3);flex-shrink:0;}
.nav-search input{
  width:150px;
  border:0;background:transparent;outline:none;
  font-size:13px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:0;
  border-radius:var(--r-btn);
  font-size:14px;
  font-weight:600;
  padding:11px 20px;
  cursor:pointer;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease,color .15s ease,border-color .15s ease;
  white-space:nowrap;
  text-align:center;
}
.btn-primary{
  color:#05121A;
  background:linear-gradient(135deg,#2E6BFF 0%,#21E6C1 100%);
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  box-shadow:0 0 0 1px rgba(33,230,193,.6), 0 12px 40px -6px rgba(33,230,193,.65);
  filter:brightness(1.06);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(33,230,193,.5),0 6px 18px -8px rgba(33,230,193,.5);}
.btn-ghost{
  color:var(--pulse);
  background:rgba(18,28,45,.5);
  border:1px solid rgba(33,230,193,.42);
}
.btn-ghost:hover{background:rgba(33,230,193,.10);border-color:rgba(33,230,193,.75);}
.btn-ghost:active{transform:translateY(1px);}
.btn-pill{border-radius:999px;}
.header-cta{padding:10px 18px;font-size:13.5px;}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(18,28,45,.5);
  align-items:center;justify-content:center;
  cursor:pointer;
}
.menu-toggle svg{width:20px;height:20px;color:var(--text);}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(3,6,12,.6);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  z-index:90;
  opacity:0;
  pointer-events:none;
  transition:opacity .25s ease;
}
.drawer-mask.show{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(340px,88vw);
  height:100%;
  z-index:95;
  background:linear-gradient(180deg,rgba(10,18,32,.98),rgba(3,6,12,.98));
  border-left:1px solid var(--line);
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:16px;
  transform:translateX(102%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-size:22px;line-height:1;
  cursor:pointer;
  color:var(--text-2);
}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{
  padding:11px 12px;
  border-radius:10px;
  font-size:15px;
  color:var(--text-2);
  border-left:2px solid transparent;
}
.drawer-nav a:hover{background:rgba(255,255,255,.05);color:var(--text);}
.drawer-nav a.active{color:var(--text);font-weight:600;border-left-color:var(--pulse);background:rgba(33,230,193,.07);}
.drawer-search{width:100%;}
.drawer-search input{width:100%;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:4px;}

/* ========== Hero ========== */
.cat-hero{
  padding-top:calc(64px + 16px);
  padding-bottom:56px;
  position:relative;
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.55) 0%,rgba(5,8,15,.9) 68%,var(--bg) 100%),
             url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  z-index:-1;
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:start;
}
.cat-hero-main{grid-column:span 7;}
.cat-hero-side{grid-column:span 5;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-2);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--pulse);}
.breadcrumb .sep{opacity:.6;}
.crumb-current{color:var(--pulse);}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border-radius:999px;
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--pulse);
  background:rgba(33,230,193,.10);
  border:1px solid rgba(33,230,193,.32);
  margin-bottom:20px;
}
.hero-tag i{
  width:6px;height:6px;border-radius:50%;
  background:var(--pulse);
  box-shadow:0 0 10px 2px rgba(33,230,193,.6);
  animation:blip 2.4s ease-in-out infinite;
}
@keyframes blip{0%,100%{opacity:1;}50%{opacity:.35;}}
.cat-hero h1{
  font-size:clamp(28px,4.2vw,44px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.02em;
  border-left:2px solid var(--pulse);
  padding-left:18px;
}
.cat-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--pulse-soft),var(--brand));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-hero-lead{
  margin-top:20px;
  max-width:640px;
  font-size:15.5px;
  color:var(--text-2);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  margin-top:32px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.hero-stat b{
  display:block;
  font-size:24px;
  font-weight:700;
  color:var(--pulse);
}
.hero-stat span{font-size:12.5px;color:var(--text-3);}

.check-panel{
  border-radius:var(--r-lg);
  padding:22px;
  position:relative;
  overflow:hidden;
}
.check-panel::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(33,230,193,.8),transparent);
}
.check-panel h2{
  font-size:16px;
  font-weight:600;
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:6px;
}
.check-panel > p{font-size:13px;color:var(--text-3);margin-bottom:16px;}
.check-list{display:flex;flex-direction:column;gap:10px;}
.check-item{
  display:flex;
  gap:12px;
  padding:12px;
  border-radius:12px;
  background:rgba(255,255,255,.035);
  border:1px solid rgba(120,160,220,.10);
  transition:border-color .18s ease,background .18s ease;
}
.check-item:hover{border-color:rgba(33,230,193,.36);background:rgba(33,230,193,.06);}
.check-item .idx{
  font-family:var(--mono);
  font-size:13px;
  color:var(--pulse);
  padding-top:2px;
}
.check-item h3{font-size:14px;font-weight:600;}
.check-item p{font-size:12.5px;color:var(--text-3);margin-top:2px;}
.check-foot{
  margin-top:16px;
  font-size:12.5px;
  color:var(--text-3);
  border-top:1px dashed rgba(120,160,220,.2);
  padding-top:14px;
}

/* ========== 通用板块 ========== */
.section{padding:64px 0;}
@media (min-width:1024px){ .section{padding:88px 0;} }
.section-head{max-width:720px;margin-bottom:36px;}
.section-kicker{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.18em;
  color:var(--pulse);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(23px,3vw,32px);
  font-weight:700;
  padding-left:16px;
  border-left:2px solid var(--pulse);
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px;}

/* ========== 对照条 ========== */
.compare-wrap{
  border-radius:var(--r-lg);
  padding:26px;
  margin-top:8px;
}
.compare-head{
  display:grid;
  grid-template-columns:1.1fr 1fr 1fr;
  gap:16px;
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--text-3);
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.compare-head span:last-child{color:var(--pulse);}
.compare-row{
  display:grid;
  grid-template-columns:1.1fr 1fr 1fr;
  gap:16px;
  align-items:center;
  padding:18px 0;
  border-bottom:1px solid rgba(120,160,220,.10);
}
.compare-row:last-child{border-bottom:0;padding-bottom:0;}
.compare-label{font-size:14px;font-weight:600;color:var(--text);}
.compare-label small{display:block;font-weight:400;font-size:12.5px;color:var(--text-3);margin-top:2px;}
.bar-track{
  height:34px;
  border-radius:9px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(120,160,220,.10);
  display:flex;
  align-items:center;
  padding:0 10px;
  position:relative;
  overflow:hidden;
}
.bar-fill{
  position:absolute;
  left:0;top:0;bottom:0;
  border-radius:9px 0 0 9px;
  background:linear-gradient(90deg,rgba(120,160,220,.30),rgba(120,160,220,.14));
}
.bar-fill.hot{background:linear-gradient(90deg,rgba(33,230,193,.60),rgba(46,107,255,.45));}
.bar-text{
  position:relative;
  z-index:2;
  font-size:12.5px;
  color:var(--text-2);
}
.bar-text strong{
  font-family:var(--mono);
  font-size:13.5px;
  color:var(--text);
  margin-right:6px;
}
.compare-row.hot .bar-text{color:#EAF1FF;}
.compare-row.hot .bar-text strong{color:#05121A;}

/* ========== 卡片瀑布 ========== */
.masonry{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
  align-items:start;
}
.m-card{
  border-radius:var(--r-card);
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:14px;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.m-card:hover{
  border-color:rgba(33,230,193,.42);
  transform:translateY(-2px);
  box-shadow:0 24px 46px -22px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.08);
}
.m-card.wide{grid-column:span 2;}
.m-card .m-media{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid rgba(120,160,220,.14);
  aspect-ratio:16/9;
  background:#0A1220;
}
.m-card .m-media img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
  transition:transform .3s ease;
}
.m-card:hover .m-media img{transform:scale(1.02);}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.03em;
  color:var(--pulse);
  background:rgba(33,230,193,.10);
  border:1px solid rgba(33,230,193,.26);
}
.badge.neutral{
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border-color:rgba(120,160,220,.18);
}
.m-card h3{font-size:18.5px;font-weight:600;}
.m-card > p{font-size:14.5px;color:var(--text-2);}
.m-points{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.m-points li{
  position:relative;
  padding-left:18px;
  font-size:13.5px;
  color:var(--text-3);
}
.m-points li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand);
}
.m-link{
  margin-top:auto;
  font-size:13.5px;
  color:var(--pulse);
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding-top:6px;
  transition:gap .18s ease,color .18s ease;
}
.m-link:hover{gap:10px;color:var(--pulse-soft);}
.mini-metrics{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
  margin-top:4px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.mini-metrics div b{
  display:block;
  font-family:var(--mono);
  font-size:18px;
  color:var(--pulse);
  font-variant-numeric:tabular-nums;
}
.mini-metrics div span{font-size:11.5px;color:var(--text-3);}

/* ========== 三步核对 ========== */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.step-card{
  border-radius:var(--r-card);
  padding:22px;
  position:relative;
}
.step-card .num{
  font-family:var(--mono);
  font-size:28px;
  color:rgba(33,230,193,.85);
  letter-spacing:-.02em;
}
.step-card h3{font-size:16.5px;margin-top:10px;}
.step-card p{font-size:13.5px;color:var(--text-3);margin-top:8px;}

/* ========== FAQ ========== */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:22px 4px;
  background:transparent;
  border:0;
  text-align:left;
  cursor:pointer;
  transition:color .18s ease;
}
.faq-q:hover .faq-title{color:var(--pulse);}
.faq-index{
  font-family:var(--mono);
  font-size:13px;
  color:var(--text-3);
  padding-top:4px;
  min-width:28px;
  transition:color .18s ease;
}
.faq-title{font-size:16px;font-weight:600;color:var(--text);flex:1;transition:color .18s ease;}
.faq-arrow{
  width:20px;height:20px;
  flex-shrink:0;
  margin-top:3px;
  color:var(--text-3);
  transition:transform .25s ease,color .25s ease;
}
.faq-item.open .faq-index{color:var(--pulse);}
.faq-item.open .faq-title{color:var(--pulse);}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--pulse);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 4px 24px 44px;
  font-size:14.5px;
  color:var(--text-2);
}

/* ========== CTA / 表单 ========== */
.cta-band{
  border-radius:var(--r-lg);
  padding:32px;
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:32px;
  align-items:start;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(33,230,193,.7),transparent);
}
.cta-copy h2{font-size:clamp(21px,2.6vw,28px);padding-left:16px;border-left:2px solid var(--pulse);}
.cta-copy p{margin-top:16px;font-size:14.5px;color:var(--text-2);}
.cta-points{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{
  font-size:13.5px;
  color:var(--text-3);
  padding-left:18px;
  position:relative;
}
.cta-points li::before{
  content:"";
  position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;
  background:var(--pulse);
}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:span 2;}
.field label{font-size:13px;color:var(--text-2);}
.field input,.field select,.field textarea{
  width:100%;
  padding:13px 14px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:rgba(10,18,32,.72);
  color:var(--text);
  font-size:14px;
  outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:104px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(33,230,193,.7);
  box-shadow:0 0 0 6px rgba(33,230,193,.12);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#6C7C96 50%),linear-gradient(135deg,#6C7C96 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.check-line{
  grid-column:span 2;
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}
.check-line input{width:16px;height:16px;margin-top:4px;accent-color:#21E6C1;}
.form-note{grid-column:span 2;font-size:12.5px;color:var(--text-3);}
.form-actions{grid-column:span 2;display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.btn[data-loading="true"]{opacity:.75;pointer-events:none;}
.form-success{
  grid-column:span 2;
  display:none;
  border-radius:12px;
  padding:12px 14px;
  font-size:13.5px;
  color:#35D07F;
  background:rgba(53,208,127,.10);
  border:1px solid rgba(53,208,127,.35);
}
.form-success.show{display:block;}

/* ========== 页脚 ========== */
.site-footer{
  margin-top:40px;
  background:var(--deep);
  border-top:1px solid rgba(120,160,220,.14);
  padding:56px 0 26px;
  position:relative;
  z-index:2;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;color:var(--text-3);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:var(--text-3);transition:color .18s ease;}
.footer-col a:hover{color:var(--brand-hover);}
.footer-col p{font-size:13.5px;color:var(--text-3);}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(120,160,220,.12);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-2);}
.footer-bottom a:hover{color:var(--pulse);}

/* ========== 响应式 ========== */
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-search{display:none;}
  .header-left{grid-column:span 6;}
  .header-right{grid-column:span 6;}
  .menu-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .cat-hero-main{grid-column:span 12;}
  .cat-hero-side{grid-column:span 12;}
  .cta-band{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .site-header{height:56px;}
  .header-grid{height:56px;gap:12px;}
  .cat-hero{padding-top:calc(56px + 16px);padding-bottom:40px;}
  .cat-hero h1{padding-left:14px;}
  .section{padding:52px 0;}
  .masonry{grid-template-columns:1fr;gap:18px;}
  .m-card.wide{grid-column:span 1;}
  .steps{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .field.full,.check-line,.form-note,.form-actions,.form-success{grid-column:span 1;}
  .compare-head{display:none;}
  .compare-row{
    grid-template-columns:1fr;
    gap:10px;
    padding:18px 0;
    border-bottom:1px solid rgba(120,160,220,.14);
  }
  .bar-track{height:30px;}
  .faq-a-inner{padding-left:0;}
  .cta-band{padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .hero-stats{gap:14px 22px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}