/* roulang page: index */
:root{
  --c-primary:#19E3B1;
  --c-primary-soft:#3BF0C4;
  --c-accent:#FF7A45;
  --c-third:#7C5CFF;
  --bg-0:#05080F;
  --bg-1:#0B1220;
  --bg-2:#111C2E;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.08);
  --stroke:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.08);
  --tx-1:#EEF3FA;
  --tx-2:#9FB0C7;
  --tx-3:#6B7C93;
  --r-card:18px;
  --r-glass:20px;
  --r-img:12px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(25,227,177,.5),0 10px 34px rgba(25,227,177,.28);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.container{width:100%;max-width:1280px;margin:0 auto;padding-left:16px;padding-right:16px;}
@media(min-width:640px){.container{padding-left:24px;padding-right:24px;}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px;}}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:8px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.scrolled{
  background:rgba(5,8,15,.94);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:rgba(25,227,177,.2);
}
.nav-wrap{display:flex;align-items:center;gap:18px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-bar{width:4px;height:26px;border-radius:2px;background:linear-gradient(180deg,var(--c-primary),rgba(25,227,177,.25));}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;white-space:nowrap;}
.logo-text b{color:var(--c-primary);}
.logo-text i{font-style:normal;color:var(--tx-1);}
.nav-search{
  flex:1 1 auto;max-width:560px;display:flex;align-items:center;gap:10px;
  height:42px;padding:0 6px 0 14px;border-radius:9999px;
  background:var(--glass);border:1px solid var(--stroke);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search:focus-within{border-color:rgba(25,227,177,.55);box-shadow:0 0 0 4px rgba(25,227,177,.1);background:rgba(255,255,255,.07);}
.nav-search svg{flex:0 0 auto;color:var(--tx-3);}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--tx-1);
}
.nav-search input::placeholder{color:var(--tx-3);}
.search-btn{
  flex:0 0 auto;width:34px;height:34px;border-radius:9999px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#04211A;
  box-shadow:0 0 0 1px rgba(25,227,177,.5),0 6px 18px rgba(25,227,177,.24);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.search-btn:hover{background:var(--c-primary-soft);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,227,177,.6),0 10px 24px rgba(25,227,177,.34);}
.nav-links{display:none;align-items:center;gap:22px;flex:0 0 auto;}
.nav-links a{
  position:relative;font-size:14px;color:var(--tx-2);padding:6px 0;
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--c-primary);
  transition:width .2s ease-out;
}
.nav-links a:hover{color:var(--tx-1);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--c-primary);}
.nav-links a.active::before{
  content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:9999px;background:var(--c-primary);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:9999px;
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:background .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.btn-primary{
  background:var(--c-primary);color:#04211A;
  box-shadow:0 0 0 1px rgba(25,227,177,.5),0 10px 34px rgba(25,227,177,.28);
}
.btn-primary:hover{background:var(--c-primary-soft);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,227,177,.6),0 14px 40px rgba(25,227,177,.38);}
.btn-ghost{
  background:var(--glass);border:1px solid var(--stroke);color:var(--tx-1);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(25,227,177,.4);transform:translateY(-2px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:13px;}
.nav-cta{display:none;}
.menu-btn{
  display:flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:14px;flex:0 0 auto;
  background:var(--glass);border:1px solid var(--stroke);color:var(--tx-1);
}
.mobile-search-row{display:block;padding-bottom:12px;}
.mobile-search-row .nav-search{max-width:none;display:none;}
.mobile-search-row.open .nav-search{display:flex;}
@media(min-width:1024px){
  .nav-links{display:flex;}
  .nav-cta{display:inline-flex;}
  .menu-btn{display:none;}
  .mobile-search-row{display:none;}
}
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(5,8,15,.96);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:22px 20px;transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .3s ease,opacity .3s ease;
}
.drawer.open{transform:translateY(0);opacity:1;pointer-events:auto;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:44px;height:44px;border-radius:14px;background:var(--glass);border:1px solid var(--stroke);display:flex;align-items:center;justify-content:center;}
.drawer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.drawer-grid a{
  display:block;padding:16px;border-radius:16px;background:var(--glass);
  border:1px solid var(--stroke);font-size:15px;font-weight:600;
}
.drawer-grid a span{display:block;font-size:12px;font-weight:400;color:var(--tx-3);margin-top:4px;}
.drawer-grid a.active{border-color:rgba(25,227,177,.5);color:var(--c-primary);}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;min-height:clamp(520px,78vh,760px);display:flex;align-items:center;}
.hero-bg{position:absolute;inset:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.55) 0%,rgba(5,8,15,.72) 45%,rgba(5,8,15,.96) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:36px;padding:72px 0 56px;width:100%;}
@media(min-width:1024px){
  .hero-inner{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:center;gap:48px;padding:96px 0 72px;}
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:6px;
  background:rgba(255,122,69,.14);border:1px solid rgba(255,122,69,.35);
  color:var(--c-accent);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.hero-badge .dot{width:7px;height:7px;border-radius:9999px;background:var(--c-accent);box-shadow:0 0 10px rgba(255,122,69,.9);}
.hero h1{
  margin-top:18px;font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.22;letter-spacing:-.02em;
  text-shadow:0 6px 30px rgba(0,0,0,.5);
}
.hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-sub{margin-top:16px;max-width:560px;font-size:16px;color:var(--tx-2);line-height:1.8;}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}
.stat-strip{
  margin-top:34px;display:flex;flex-wrap:wrap;gap:12px 34px;padding:18px 22px;border-radius:var(--r-glass);
  background:var(--glass);border:1px solid var(--stroke);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.stat{min-width:96px;}
.stat .num{display:block;font-size:24px;font-weight:800;color:var(--c-primary);line-height:1.2;}
.stat span{font-size:12px;color:var(--tx-2);}
.hero-card{display:none;}
@media(min-width:1024px){
  .hero-card{
    display:block;position:relative;border-radius:var(--r-glass);overflow:hidden;
    border:1px solid var(--stroke);box-shadow:var(--shadow-card);
    transform:translate(10px,-6px) rotate(.8deg);aspect-ratio:3/4;max-width:400px;margin-left:auto;
  }
  .hero-card img{width:100%;height:100%;object-fit:cover;}
  .hero-card::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(5,8,15,0) 40%,rgba(5,8,15,.88) 100%);
  }
  .hero-card-info{position:absolute;left:18px;right:18px;bottom:16px;z-index:2;}
  .hero-card-info strong{display:block;font-size:15px;font-weight:700;}
  .hero-card-info small{font-size:12px;color:var(--tx-2);}
}

/* ---------- sections ---------- */
.section{padding:48px 0;}
@media(min-width:768px){.section{padding:72px 0;}}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--bg-1);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;}
.section-head h2{font-size:clamp(22px,3vw,30px);font-weight:700;letter-spacing:-.01em;}
.section-head p{margin-top:6px;font-size:14px;color:var(--tx-2);}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);transition:gap .2s ease-out;}
.link-more:hover{gap:12px;}
.slash-divider{
  height:1px;margin:0;
  background:linear-gradient(90deg,transparent,rgba(25,227,177,.35),transparent);
  transform:skewY(-1.2deg);
}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;border-radius:6px;padding:3px 9px;}
.badge-cat{background:rgba(25,227,177,.12);color:var(--c-primary);}
.badge-time{background:var(--glass);border:1px solid var(--stroke);color:var(--tx-2);}
.badge-hot{background:rgba(255,122,69,.14);color:var(--c-accent);border:1px solid rgba(255,122,69,.3);}
.badge-third{background:rgba(124,92,255,.14);color:#A691FF;}

/* quick bar */
.quick-bar{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:9999px;font-size:14px;color:var(--tx-2);
  background:var(--glass);border:1px solid var(--stroke);
  position:relative;transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.chip::after{
  content:"";position:absolute;left:18px;right:18px;bottom:7px;height:2px;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 10px rgba(25,227,177,.8);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease-out;
}
.chip:hover{color:var(--tx-1);background:rgba(255,255,255,.07);border-color:rgba(25,227,177,.3);}
.chip:hover::after{transform:scaleX(1);}

/* feature */
.feature-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media(min-width:768px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
.feature-main{
  grid-column:span 1;padding:26px;border-radius:var(--r-glass);
  background:linear-gradient(150deg,rgba(25,227,177,.1),rgba(124,92,255,.07) 70%,rgba(255,255,255,.02));
  border:1px solid var(--stroke);
}
.feature-main h3{font-size:20px;font-weight:700;margin-bottom:10px;}
.feature-main p{color:var(--tx-2);font-size:14px;}
.feature-list{display:grid;gap:14px;}
.feature-item{
  display:flex;gap:14px;padding:18px;border-radius:var(--r-card);
  background:var(--bg-2);border:1px solid var(--stroke);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.feature-item:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35);}
.feature-icon{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(25,227,177,.12);color:var(--c-primary);
}
.feature-item h4{font-size:15px;font-weight:700;margin-bottom:4px;}
.feature-item p{font-size:13px;color:var(--tx-2);line-height:1.7;}

/* rails */
.rail-wrap{position:relative;}
.rail{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px;}
.rail::-webkit-scrollbar,.quick-bar::-webkit-scrollbar,.no-bar::-webkit-scrollbar{display:none;}
.rail,.quick-bar,.no-bar{-ms-overflow-style:none;scrollbar-width:none;}
.rail-card{
  flex:0 0 auto;width:78%;max-width:280px;scroll-snap-align:start;
  border-radius:var(--r-card);overflow:hidden;background:var(--bg-2);
  border:1px solid var(--stroke);box-shadow:var(--shadow-card);
  transition:transform .22s ease-out,border-color .22s ease-out;
}
.rail-card:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35);}
@media(min-width:640px){.rail-card{width:260px;}}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:rgba(255,255,255,.03);}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.rail-card:hover .thumb img{transform:scale(1.04);}
.thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,0) 45%,rgba(5,8,15,.78) 100%);}
.thumb-top{position:absolute;top:10px;left:10px;z-index:2;display:flex;gap:6px;}
.rail-body{padding:14px 16px 16px;}
.rail-body h3{font-size:15px;font-weight:600;line-height:1.5;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rail-meta{margin-top:10px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--tx-3);}
.rail-nav{position:absolute;top:-58px;right:0;display:none;gap:8px;}
@media(min-width:1024px){.rail-nav{display:flex;}}
.rail-nav button{
  width:38px;height:38px;border-radius:9999px;display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--stroke);color:var(--tx-2);
  transition:color .2s,border-color .2s,background .2s;
}
.rail-nav button:hover{color:var(--c-primary);border-color:rgba(25,227,177,.4);background:rgba(255,255,255,.08);}

/* top list */
.top-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media(min-width:1024px){.top-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:26px;}}
.top-main{
  border-radius:var(--r-glass);overflow:hidden;background:var(--bg-2);
  border:1px solid var(--stroke);box-shadow:var(--shadow-card);
  transition:transform .22s ease-out,border-color .22s ease-out;
}
.top-main:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35);}
.top-main .thumb{aspect-ratio:16/9;}
.top-main-body{padding:22px;}
.top-main-body h3{font-size:20px;font-weight:700;margin-bottom:10px;}
.top-main-body p{font-size:14px;color:var(--tx-2);}
.top-list{display:grid;gap:10px;align-content:start;}
.top-row{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:14px;align-items:center;
  padding:14px 16px;border-radius:var(--r-card);
  background:var(--bg-2);border:1px solid var(--stroke);
  transition:border-color .2s ease,background .2s ease,transform .2s ease-out;
}
.top-row:hover{border-color:rgba(25,227,177,.4);background:rgba(255,255,255,.045);transform:translateX(2px);}
.top-rank{
  font-size:22px;font-weight:800;color:transparent;-webkit-text-stroke:1px rgba(25,227,177,.75);
  line-height:1;text-align:center;
}
.top-row h4{font-size:14px;font-weight:600;}
.top-sub{font-size:12px;color:var(--tx-3);}
.heat{margin-top:8px;height:4px;border-radius:9999px;background:rgba(255,255,255,.07);overflow:hidden;}
.heat i{display:block;height:100%;border-radius:9999px;background:linear-gradient(90deg,var(--c-third),var(--c-primary));}
.w-96{width:96%;}.w-88{width:88%;}.w-80{width:80%;}.w-72{width:72%;}.w-64{width:64%;}

/* news */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.news-card{
  display:flex;flex-direction:column;padding:22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--stroke);backdrop-filter:blur(10px);
  transition:transform .22s ease-out,border-color .22s ease-out,background .22s ease-out;
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.4);background:rgba(255,255,255,.07);}
.news-card h3{font-size:16px;font-weight:700;line-height:1.55;margin-top:12px;}
.news-card p{margin-top:10px;font-size:13px;color:var(--tx-2);line-height:1.75;}
.news-foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--tx-3);}
.empty-state{
  grid-column:1/-1;text-align:center;padding:52px 20px;border-radius:var(--r-glass);
  background:var(--glass);border:1px dashed var(--stroke);
}
.empty-state svg{color:var(--tx-3);margin:0 auto 14px;}
.empty-state p{color:var(--tx-2);font-size:14px;margin-bottom:18px;}

/* zones */
.zone{margin-top:36px;}
.zone-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.zone-head h3{font-size:18px;font-weight:700;}
.zone-count{font-size:12px;color:var(--c-primary);background:rgba(25,227,177,.12);border-radius:6px;padding:2px 8px;font-weight:600;}
.mini-rail{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px;}
.mini-card{
  flex:0 0 auto;width:66%;max-width:190px;scroll-snap-align:start;
  border-radius:var(--r-card);overflow:hidden;background:var(--bg-2);border:1px solid var(--stroke);
  transition:transform .22s ease-out,border-color .22s ease-out;
}
.mini-card:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35);}
.mini-card .thumb{aspect-ratio:3/4;}
.mini-body{padding:12px 14px 14px;}
.mini-body h4{font-size:14px;font-weight:600;line-height:1.5;}
.mini-body span{display:block;margin-top:8px;font-size:12px;color:var(--tx-3);}
@media(min-width:640px){.mini-card{width:180px;}}

/* proof */
.proof{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.proof{grid-template-columns:repeat(3,minmax(0,1fr));}}
.proof-card{padding:24px;border-radius:var(--r-card);background:var(--bg-2);border:1px solid var(--stroke);}
.proof-card .q{font-size:15px;font-weight:600;line-height:1.7;}
.proof-card .who{margin-top:16px;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--tx-3);}
.avatar-dot{width:34px;height:34px;border-radius:9999px;background:linear-gradient(135deg,var(--c-primary),var(--c-third));opacity:.85;}
.metric-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:30px;}
@media(min-width:768px){.metric-row{grid-template-columns:repeat(4,minmax(0,1fr));}}
.metric{padding:20px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--stroke);}
.metric .num{font-size:26px;font-weight:800;color:var(--c-primary);display:block;}
.metric span{font-size:12px;color:var(--tx-2);}

/* faq */
.faq{display:grid;gap:12px;max-width:900px;}
.faq-item{border-radius:var(--r-card);background:var(--bg-2);border:1px solid var(--stroke);overflow:hidden;transition:border-color .2s ease;}
.faq-item.open{border-color:rgba(25,227,177,.45);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:15px;font-weight:600;
}
.faq-q .ic{flex:0 0 auto;font-size:18px;color:var(--c-primary);line-height:1;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;background:rgba(0,0,0,.22);}
.faq-a p{padding:0 20px 18px;font-size:14px;color:var(--tx-2);}

/* cta */
.cta-band{
  display:grid;grid-template-columns:1fr;gap:24px;padding:30px;border-radius:var(--r-glass);
  background:linear-gradient(120deg,rgba(25,227,177,.1),rgba(124,92,255,.08) 60%,rgba(255,255,255,.02));
  border:1px solid var(--stroke);backdrop-filter:blur(18px);
}
@media(min-width:1024px){.cta-band{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:36px;padding:40px;}}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;}
.cta-band p{margin-top:10px;font-size:14px;color:var(--tx-2);}
.sub-form{display:flex;flex-wrap:wrap;gap:12px;}
.sub-form input{
  flex:1 1 220px;min-width:0;height:50px;padding:0 18px;border-radius:9999px;
  background:rgba(255,255,255,.05);border:1px solid var(--stroke);color:var(--tx-1);
  outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:var(--tx-3);}
.sub-form input:focus{border-color:rgba(25,227,177,.55);box-shadow:0 0 0 4px rgba(25,227,177,.12);}
.form-hint{margin-top:12px;font-size:12px;color:var(--tx-3);}
.form-msg{margin-top:8px;font-size:12px;min-height:18px;}
.form-msg.err{color:var(--c-accent);}
.form-msg.ok{color:var(--c-primary);}

/* footer */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:56px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;}}
.footer-brand .logo-text{font-size:17px;}
.footer-brand p{margin-top:14px;font-size:13px;color:var(--tx-2);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--tx-1);}
.footer-col li{margin-bottom:10px;}
.footer-col a,.footer-col span{font-size:13px;color:var(--tx-2);transition:color .2s ease;}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12px;color:var(--tx-3);
}
.footer-bottom a:hover{color:var(--c-primary);}
.to-top{
  position:fixed;right:18px;bottom:22px;z-index:70;
  width:46px;height:46px;border-radius:9999px;display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--stroke);color:var(--tx-1);
  backdrop-filter:blur(14px);opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease,border-color .2s ease;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{border-color:rgba(25,227,177,.5);color:var(--c-primary);transform:translateY(-2px);}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
  .rail-card:hover,.mini-card:hover,.top-main:hover,.news-card:hover,.feature-item:hover{transform:none;}
  .rail-card:hover .thumb img{transform:none;}
}

/* roulang page: category1 */
:root{
  --c-primary:#19E3B1;
  --c-primary-hi:#3BF0C4;
  --c-accent:#FF7A45;
  --c-third:#7C5CFF;
  --bg-0:#05080F;
  --bg-1:#0B1220;
  --bg-2:#111C2E;
  --glass:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.08);
  --txt:#EEF3FA;
  --txt-2:#9FB0C7;
  --txt-3:#6B7C93;
  --r-card:18px;
  --r-glass:20px;
  --r-btn:9999px;
  --r-badge:6px;
  --r-img:12px;
  --sh-card:0 10px 30px rgba(0,0,0,.45);
  --sh-glow:0 0 0 1px rgba(25,227,177,.5),0 10px 34px rgba(25,227,177,.28);
  --num-font:"Barlow","Inter","HarmonyOS Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--txt);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.6;
}
body::after{
  content:"";
  position:fixed;
  top:-240px;left:-180px;
  width:640px;height:640px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(25,227,177,.13),transparent 66%);
  pointer-events:none;
  z-index:0;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;border-radius:var(--r-img)}
button,input{font:inherit;color:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 16px;position:relative;z-index:1}
@media(min-width:640px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
.section{padding:48px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.glass{background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.glow{box-shadow:var(--sh-glow)}
.no-bar{scrollbar-width:none;-ms-overflow-style:none}
.no-bar::-webkit-scrollbar{display:none}
.num{font-family:var(--num-font);font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;transition:background-color .25s ease,border-color .25s ease,backdrop-filter .25s ease;border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(5,8,15,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom-color:rgba(25,227,177,.2)}
.header-inner{display:flex;align-items:center;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:4px;height:22px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 12px rgba(25,227,177,.65)}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.logo-text b{color:var(--txt)}
.logo-text i{font-style:normal;color:var(--c-primary)}
.search-pill{flex:1 1 auto;max-width:560px;display:flex;align-items:center;gap:10px;height:44px;padding:0 6px 0 16px;border-radius:var(--r-btn);background:rgba(255,255,255,.05);border:1px solid var(--line);transition:border-color .2s,box-shadow .2s,background-color .2s}
.search-pill:hover{background:rgba(255,255,255,.07)}
.search-pill:focus-within{border-color:rgba(25,227,177,.55);box-shadow:0 0 0 3px rgba(25,227,177,.14)}
.search-pill svg{flex:0 0 auto;color:var(--txt-3)}
.search-pill input{flex:1 1 auto;min-width:0;height:100%;background:transparent;border:0;outline:0;font-size:14px}
.search-pill input::placeholder{color:var(--txt-3)}
.search-btn{flex:0 0 auto;width:32px;height:32px;border:0;border-radius:50%;background:var(--c-primary);color:#04150F;display:grid;place-items:center;cursor:pointer;transition:background-color .2s,box-shadow .2s}
.search-btn:hover{background:var(--c-primary-hi);box-shadow:0 0 0 1px rgba(25,227,177,.5),0 8px 22px rgba(25,227,177,.35)}
.nav-links{display:flex;align-items:center;gap:22px;font-size:14px;flex:0 0 auto}
.nav-links a{position:relative;padding:6px 0;color:var(--txt-2);transition:color .2s ease}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;border-radius:2px;background:var(--c-primary);transition:width .2s ease-out}
.nav-links a:hover{color:var(--txt)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--c-primary);font-weight:600}
.nav-links a.active::before{content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 10px rgba(25,227,177,.85)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s ease-out,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease}
.btn-primary{background:var(--c-primary);color:#04150F;box-shadow:var(--sh-glow)}
.btn-primary:hover{background:var(--c-primary-hi);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,227,177,.6),0 14px 44px rgba(25,227,177,.36)}
.btn-ghost{background:rgba(255,255,255,.05);border-color:var(--line);color:var(--txt)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(25,227,177,.4)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:14px}
.btn-link svg{transition:transform .2s ease-out}
.btn-link:hover svg{transform:translateX(4px)}
.icon-btn{display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--txt);place-items:center;cursor:pointer}
.icon-btn:hover{border-color:rgba(25,227,177,.4);color:var(--c-primary)}
.mobile-search-row{display:none;padding:0 0 14px}
.mobile-search-row.open{display:block}
.mobile-search-row .search-pill{display:flex;max-width:none}
@media(max-width:1023px){
  .nav-links{display:none}
  .header-inner .search-pill{display:none}
  .icon-btn{display:grid}
  .desktop-cta{display:none}
}
@media(min-width:1024px){
  .mobile-search-row{display:none !important}
}
.drawer{position:fixed;inset:0;z-index:60;display:flex;flex-direction:column;gap:20px;padding:20px 20px 32px;background:rgba(5,8,15,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);transform:translateY(-102%);transition:transform .28s ease-out;overflow-y:auto}
.drawer.open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.drawer-nav a{padding:16px 14px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.045);font-size:15px;font-weight:600}
.drawer-nav a.active{color:var(--c-primary);border-color:rgba(25,227,177,.45);background:rgba(25,227,177,.1)}
.drawer-nav a:hover{border-color:rgba(25,227,177,.4)}
.drawer-note{color:var(--txt-3);font-size:13px}

/* ---------- 分类 Hero ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.cat-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(180deg,rgba(5,8,15,.74),rgba(5,8,15,.95)),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;z-index:0}
.hero-grid{position:relative;z-index:1;display:grid;gap:28px;padding:48px 0 52px}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.15fr .85fr;align-items:center;gap:40px;padding:56px 0 60px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--c-primary);background:rgba(25,227,177,.1);border:1px solid rgba(25,227,177,.28);border-radius:var(--r-badge);padding:4px 12px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 8px rgba(255,122,69,.9)}
.cat-hero h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;letter-spacing:-.02em;line-height:1.22;margin:16px 0 14px}
.cat-hero h1 em{font-style:normal;color:var(--c-primary)}
.hero-lead{color:var(--txt-2);font-size:15px;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat-card{padding:18px;border-radius:var(--r-card);background:rgba(255,255,255,.055);border:1px solid var(--line);backdrop-filter:blur(18px);transition:transform .2s ease-out,border-color .2s ease}
.stat-card:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35)}
.stat-card .val{font-family:var(--num-font);font-size:30px;font-weight:800;color:var(--c-primary);line-height:1.1}
.stat-card .lbl{font-size:12px;color:var(--txt-3);margin-top:6px}
.stat-card:nth-child(2) .val{color:var(--c-accent)}
.stat-card:nth-child(3) .val{color:#B7A6FF}
.stat-card:nth-child(4) .val{color:var(--txt)}

/* ---------- 通用板块 ---------- */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.section-head h2{font-size:clamp(22px,3vw,30px);font-weight:700}
.section-head p{color:var(--txt-2);font-size:14px;max-width:660px;margin-top:8px}
.count-badge{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-badge);background:rgba(124,92,255,.14);color:#B7A6FF;font-size:12px;font-weight:600;vertical-align:middle;margin-left:10px}

/* ---------- 筛选 ---------- */
.filter-bar{display:flex;gap:10px;overflow-x:auto;padding-bottom:8px;margin-bottom:26px;scroll-snap-type:x proximity}
.filter-pill{flex:0 0 auto;min-height:40px;padding:8px 18px;border-radius:var(--r-btn);border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--txt-2);font-size:14px;cursor:pointer;scroll-snap-align:start;transition:background-color .2s ease,border-color .2s ease,color .2s ease,transform .2s ease-out}
.filter-pill:hover{background:rgba(255,255,255,.08);color:var(--txt);transform:translateY(-1px)}
.filter-pill.active{background:rgba(25,227,177,.14);border-color:rgba(25,227,177,.5);color:var(--c-primary);font-weight:600}
.filter-pill span{font-family:var(--num-font);opacity:.75;margin-left:6px}

/* ---------- 直播入口卡片 ---------- */
.card-grid{display:grid;gap:24px}
@media(min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr)}}
.media-card{position:relative;border-radius:var(--r-card);border:1px solid var(--line);background:rgba(255,255,255,.045);overflow:hidden;box-shadow:var(--sh-card);transition:transform .2s ease-out,border-color .2s ease,box-shadow .2s ease}
.media-card:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35);box-shadow:0 16px 40px rgba(0,0,0,.55)}
.media-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.media-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease-out}
.media-card:hover .media-thumb img{transform:scale(1.04)}
.media-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,0) 45%,rgba(5,8,15,.78));pointer-events:none}
.badge-float{position:absolute;left:12px;top:12px;z-index:2}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1.6;padding:3px 10px;border-radius:var(--r-badge);white-space:nowrap}
.badge-cat{background:rgba(25,227,177,.12);color:var(--c-primary)}
.badge-hot{background:rgba(255,122,69,.15);color:var(--c-accent);border:1px solid rgba(255,122,69,.35)}
.badge-time{background:rgba(255,255,255,.06);color:var(--txt-2);border:1px solid var(--line)}
.badge-third{background:rgba(124,92,255,.14);color:#B7A6FF}
.media-body{padding:18px 20px 20px}
.media-body h3{font-size:19px;font-weight:600;margin-bottom:8px}
.media-body p{color:var(--txt-2);font-size:14px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;font-size:13px;color:var(--txt-3);border-top:1px solid var(--line-soft);margin-top:14px;padding-top:12px}
.meta-row b{color:var(--txt-2);font-weight:600}
.meta-row .dot-live{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 8px rgba(255,122,69,.9);display:inline-block;margin-right:6px;vertical-align:middle}

/* ---------- 观看方式 ---------- */
.watch-grid{display:grid;gap:16px}
@media(min-width:640px){.watch-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.watch-grid{grid-template-columns:repeat(4,1fr)}}
.watch-item{display:flex;gap:14px;padding:20px;border-radius:var(--r-card);border:1px solid var(--line);background:rgba(255,255,255,.04);transition:transform .2s ease-out,border-color .2s ease}
.watch-item:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35)}
.watch-icon{width:42px;height:42px;flex:0 0 auto;border-radius:14px;display:grid;place-items:center;background:rgba(25,227,177,.12);color:var(--c-primary)}
.watch-item:nth-child(2) .watch-icon{background:rgba(255,122,69,.13);color:var(--c-accent)}
.watch-item:nth-child(3) .watch-icon{background:rgba(124,92,255,.14);color:#B7A6FF}
.watch-item h3{font-size:16px;font-weight:600;margin-bottom:6px}
.watch-item p{font-size:13.5px;color:var(--txt-2)}

/* ---------- 流程 ---------- */
.steps{display:grid;gap:18px}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{position:relative;padding:26px 24px 24px;border-radius:var(--r-glass);border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));overflow:hidden}
.step .num{font-family:var(--num-font);font-size:32px;font-weight:800;color:rgba(25,227,177,.85);line-height:1}
.step h3{font-size:18px;font-weight:600;margin:12px 0 8px}
.step p{font-size:14px;color:var(--txt-2)}
.step .bar{height:4px;border-radius:2px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:18px}
.step .bar i{display:block;height:100%;border-radius:2px;background:linear-gradient(90deg,var(--c-primary),var(--c-third))}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.04);overflow:hidden;transition:border-color .2s ease}
.faq-item.open{border-color:rgba(25,227,177,.45)}
.faq-h{margin:0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:600;cursor:pointer}
.faq-q .sign{flex:0 0 auto;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);display:grid;place-items:center;color:var(--c-primary);font-family:var(--num-font);font-size:16px;line-height:1;transition:transform .2s ease,border-color .2s ease}
.faq-item.open .faq-q .sign{border-color:rgba(25,227,177,.5);transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;background:rgba(0,0,0,.22);transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:460px}
.faq-a p{padding:16px 20px 20px;font-size:14px;color:var(--txt-2)}

/* ---------- 标签云 ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud a{padding:9px 16px;border-radius:var(--r-btn);border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--txt-2);font-size:13px;transition:transform .2s ease-out,border-color .2s ease,color .2s ease,background-color .2s ease}
.tag-cloud a:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.45);color:var(--c-primary);background:rgba(25,227,177,.08)}

/* ---------- CTA ---------- */
.cta-band{border-radius:var(--r-glass);border:1px solid var(--line);background:linear-gradient(120deg,rgba(25,227,177,.1),rgba(124,92,255,.1)),rgba(255,255,255,.035);padding:28px;display:grid;gap:22px}
@media(min-width:1024px){.cta-band{grid-template-columns:1fr 1.05fr;align-items:center;padding:34px}}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;margin-bottom:10px}
.cta-band p{color:var(--txt-2);font-size:14px;max-width:520px}
.form-row{display:flex;flex-wrap:wrap;gap:12px}
.form-row input{flex:1 1 220px;min-width:0;height:48px;padding:0 18px;border-radius:var(--r-btn);border:1px solid var(--line);background:rgba(255,255,255,.05);outline:0;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease}
.form-row input::placeholder{color:var(--txt-3)}
.form-row input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(25,227,177,.16)}
.form-note{font-size:12px;color:var(--txt-3);margin-top:12px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:80px;background:#03050A;border-top:1px solid var(--line-soft);padding:56px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-brand .logo-text{font-size:19px}
.footer-brand p{color:var(--txt-2);font-size:14px;max-width:360px;margin-top:14px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span{color:var(--txt-2);font-size:14px}
.footer-col a{transition:color .2s ease}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{margin-top:44px;border-top:1px solid var(--line-soft);padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;color:var(--txt-3);font-size:13px}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:20px;bottom:24px;z-index:40;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.06);border:1px solid var(--line);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);color:var(--txt);cursor:pointer;opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease,border-color .2s ease,color .2s ease}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.5);color:var(--c-primary)}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .media-card:hover,.btn-primary:hover,.stat-card:hover,.watch-item:hover,.tag-cloud a:hover{transform:none}
}

/* roulang page: article */
:root{
  --c-primary:#19E3B1;
  --c-primary-hi:#3BF0C4;
  --c-accent:#FF7A45;
  --c-third:#7C5CFF;
  --bg-0:#05080F;
  --bg-1:#0B1220;
  --bg-2:#111C2E;
  --glass:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --txt-0:#EEF3FA;
  --txt-1:#9FB0C7;
  --txt-2:#6B7C93;
  --r-card:18px;
  --r-glass:20px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --num:'Barlow','Inter',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;
  background:var(--bg-0);
  color:var(--txt-0);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:15.5px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font-family:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(25,227,177,.3)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;
}
.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 16px}
@media(min-width:640px){.wrap{padding:0 24px}}
@media(min-width:1024px){.wrap{padding:0 32px}}

/* ---------- 顶部进度条 ---------- */
#readProgress{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--c-primary),var(--c-third));
  z-index:99;transition:width .1s linear;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.74);
  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,.9);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom-color:rgba(25,227,177,.2);
}
.nav-inner{display:flex;align-items:center;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-bar{width:4px;height:24px;border-radius:2px;background:linear-gradient(180deg,var(--c-primary),var(--c-third))}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.logo-text b{color:var(--txt-0);font-weight:800}
.logo-text i{color:var(--c-primary);font-style:normal;font-weight:800}
.nav-search{
  flex:1 1 auto;max-width:520px;display:flex;align-items:center;gap:10px;
  height:42px;padding:0 6px 0 14px;border-radius:9999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--txt-2);transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:rgba(25,227,177,.55);box-shadow:0 0 0 3px rgba(25,227,177,.14)}
.nav-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--txt-0);font-size:14px}
.nav-search input::placeholder{color:var(--txt-2)}
.search-btn{
  flex:0 0 auto;width:32px;height:32px;border-radius:9999px;border:0;
  background:var(--c-primary);color:#05080F;display:grid;place-items:center;cursor:pointer;
  transition:background .2s ease,transform .2s ease;
}
.search-btn:hover{background:var(--c-primary-hi);transform:translateY(-1px)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;padding:8px 12px;font-size:14px;color:var(--txt-1);
  border-radius:8px;transition:color .2s ease;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--txt-0)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--c-primary)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:9999px;
  background:var(--c-primary);color:#05080F;font-weight:700;font-size:14px;white-space:nowrap;
  box-shadow:0 0 0 1px rgba(25,227,177,.5),0 10px 34px rgba(25,227,177,.28);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:var(--c-primary-hi);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(59,240,196,.6),0 14px 40px rgba(25,227,177,.36)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--txt-0);transition:.2s}
.mobile-menu{
  display:none;position:fixed;inset:0;z-index:80;
  background:rgba(5,8,15,.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  padding:22px 20px 40px;overflow-y:auto;
}
.mobile-menu.open{display:block}
.mm-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.mm-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);color:var(--txt-0);font-size:18px;cursor:pointer;
}
.mm-search{
  display:flex;align-items:center;gap:10px;height:46px;padding:0 6px 0 14px;
  border-radius:9999px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--txt-2);
}
.mm-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--txt-0);font-size:14px}
.mm-links{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
.mm-links a{
  display:flex;align-items:center;justify-content:center;min-height:48px;padding:10px 12px;
  border-radius:14px;background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:14px;color:var(--txt-1);text-align:center;transition:.2s;
}
.mm-links a:hover,.mm-links a.active{color:var(--c-primary);border-color:rgba(25,227,177,.4)}
@media(max-width:1023px){
  .nav-search,.nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav-inner{height:62px;justify-content:space-between}
}

/* ---------- 通用组件 ---------- */
.glass{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-glass);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;border-radius:9999px;
  font-size:12px;line-height:1;letter-spacing:.02em;
}
.pill-cat{background:rgba(25,227,177,.12);color:var(--c-primary)}
.pill-time{background:rgba(255,255,255,.06);color:var(--txt-1);border:1px solid var(--line)}
.pill-hot{background:rgba(255,122,69,.14);color:var(--c-accent);border:1px solid rgba(255,122,69,.35)}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;
  border-radius:9999px;border:0;cursor:pointer;font-size:14.5px;font-weight:700;
  background:var(--c-primary);color:#05080F;
  box-shadow:0 0 0 1px rgba(25,227,177,.5),0 10px 34px rgba(25,227,177,.28);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary:hover{background:var(--c-primary-hi);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(59,240,196,.6),0 14px 42px rgba(25,227,177,.36)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;
  border-radius:9999px;cursor:pointer;font-size:14.5px;font-weight:600;
  background:rgba(255,255,255,.05);border:1px solid var(--line-2);color:var(--txt-0);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:rgba(25,227,177,.4);transform:translateY(-2px)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:9999px;
  font-size:12.5px;color:var(--txt-1);
  background:rgba(255,255,255,.05);border:1px solid var(--line);transition:.2s ease;
}
.tag:hover{color:var(--c-primary);border-color:rgba(25,227,177,.45);background:rgba(25,227,177,.08)}
.sec-title{font-size:clamp(20px,2.6vw,26px);font-weight:700;letter-spacing:-.01em}
.sec-sub{font-size:13.5px;color:var(--txt-1);margin-top:6px}

/* ---------- 文章头部 ---------- */
.art-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.art-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.22;filter:saturate(.8);
}
.art-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.62) 0%,rgba(5,8,15,.9) 62%,#05080F 100%);
}
.art-hero-inner{position:relative;padding:34px 0 40px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-2)}
.breadcrumb a{color:var(--txt-2);transition:color .2s}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .cur{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--txt-1)}
.art-title{
  font-size:clamp(26px,4vw,40px);font-weight:800;line-height:1.34;letter-spacing:-.02em;
  margin:16px 0 16px;max-width:960px;
}
.art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--txt-1)}
.art-meta .m-item{display:inline-flex;align-items:center;gap:6px}
.art-meta .m-item svg{color:var(--c-primary);flex:0 0 auto}
.art-desc{
  margin-top:18px;max-width:900px;font-size:14.5px;line-height:1.9;color:var(--txt-1);
  padding-left:14px;border-left:3px solid rgba(25,227,177,.5);
}

/* ---------- 布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:28px;
  padding:34px 0 8px;align-items:start;
}
@media(min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:38px}
}
.article-main{min-width:0;max-width:820px}
.side-sticky{display:flex;flex-direction:column;gap:18px}
@media(min-width:1024px){.side-sticky{position:sticky;top:92px}}
.side-card{padding:18px;border-radius:var(--r-glass);background:var(--glass);border:1px solid var(--line)}
.side-title{
  display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;margin-bottom:12px;color:var(--txt-0);
}
.side-title::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--c-primary)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:330px;overflow-y:auto;padding-right:4px}
.toc-list::-webkit-scrollbar{width:4px}
.toc-list::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:4px}
.toc-list a{
  display:block;font-size:13.5px;line-height:1.6;color:var(--txt-1);padding:7px 10px;
  border-left:2px solid transparent;border-radius:0 8px 8px 0;transition:.2s ease;
}
.toc-list a:hover{color:var(--txt-0);background:rgba(255,255,255,.05)}
.toc-list a.active{color:var(--c-primary);border-left-color:var(--c-primary);background:rgba(25,227,177,.08)}
.toc-list a.lv3{padding-left:24px;font-size:13px;color:var(--txt-2)}

/* ---------- 正文排版 ---------- */
.article-body{
  padding:26px 22px 30px;border-radius:var(--r-glass);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  font-size:16px;line-height:1.9;color:#DCE4F0;word-wrap:break-word;
}
@media(min-width:768px){.article-body{padding:36px 40px 42px}}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  position:relative;font-size:clamp(20px,2.4vw,25px);font-weight:700;color:var(--txt-0);
  margin:2em 0 .8em;padding-left:16px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;width:4px;height:1.05em;border-radius:2px;
  background:var(--c-primary);
}
.article-body h3{
  font-size:18px;font-weight:600;color:var(--txt-0);margin:1.6em 0 .6em;scroll-margin-top:96px;
}
.article-body h4{font-size:16px;font-weight:600;color:var(--txt-0);margin:1.3em 0 .5em}
.article-body a{color:var(--c-primary);border-bottom:1px solid transparent;transition:border-color .2s ease}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body strong{color:var(--txt-0);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin:.4em 0}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.68em;width:7px;height:7px;border-radius:2px;background:var(--c-primary);
}
.article-body ol{counter-reset:olc;padding-left:0}
.article-body ol li{position:relative;padding-left:26px;margin:.4em 0;counter-increment:olc}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.42em;
  width:18px;height:18px;border-radius:6px;background:rgba(25,227,177,.14);color:var(--c-primary);
  font-size:11px;line-height:18px;text-align:center;font-family:var(--num);font-weight:700;
}
.article-body blockquote{
  margin:1.4em 0;padding:14px 20px;border-left:3px solid var(--c-primary);
  background:rgba(255,255,255,.04);border-radius:0 12px 12px 0;color:var(--txt-1);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.4em auto;height:auto}
.article-body figure{margin:1.5em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--txt-2);margin-top:10px}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;font-size:14px;margin:1.4em 0;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;display:block;overflow-x:auto;
}
.article-body th,.article-body td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.article-body th{background:rgba(255,255,255,.05);color:var(--txt-1);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body pre{
  background:#070C16;border:1px solid var(--line);border-radius:12px;
  padding:16px;overflow-x:auto;font-size:13.5px;line-height:1.7;margin:1.4em 0;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;
  background:rgba(255,255,255,.07);padding:2px 6px;border-radius:6px;color:#CBEFE3;
}
.article-body pre code{background:none;padding:0;color:#DCE4F0}
.article-body hr{border:0;height:1px;background:var(--line);margin:2em 0}

/* ---------- 空态 ---------- */
.empty-card{
  display:flex;flex-direction:column;align-items:center;text-align:center;
  padding:52px 24px;border-radius:var(--r-card);
  background:rgba(255,255,255,.03);border:1px dashed rgba(255,255,255,.16);
}
.empty-card svg{color:var(--txt-2);margin-bottom:16px}
.empty-card h2{font-size:20px;font-weight:700;margin-bottom:8px}
.empty-card p{font-size:14px;color:var(--txt-1);max-width:420px;margin-bottom:22px}

/* ---------- 正文尾部 ---------- */
.art-foot{margin-top:26px;display:flex;flex-direction:column;gap:22px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.share-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding-top:20px;border-top:1px solid var(--line);
}
.share-row .label{font-size:13px;color:var(--txt-2);margin-right:4px}
.share-btn{
  width:40px;height:40px;border-radius:9999px;display:grid;place-items:center;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--txt-1);
  transition:.2s ease;
}
.share-btn:hover{color:var(--c-primary);border-color:rgba(25,227,177,.45);transform:translateY(-2px)}
.nav-pair{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:640px){.nav-pair{grid-template-columns:1fr 1fr}}
.nav-card{
  display:block;padding:16px 18px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);transition:.2s ease;
}
.nav-card:hover{border-color:rgba(25,227,177,.35);transform:translateY(-2px)}
.nav-card .dir{font-size:12px;color:var(--txt-2);display:flex;align-items:center;gap:6px;margin-bottom:8px}
.nav-card .t{font-size:15px;font-weight:600;color:var(--txt-0);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 相关推荐 ---------- */
.rel-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:640px){.rel-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
.rel-card{
  display:block;border-radius:var(--r-card);overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35)}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0A1120}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(5,8,15,.85) 100%)}
.rel-badge{position:absolute;top:10px;left:10px;z-index:2}
.rel-body{padding:14px 16px 16px}
.rel-body h3{
  font-size:15.5px;font-weight:600;line-height:1.55;color:var(--txt-0);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:48px;
}
.rel-body p{
  margin-top:8px;font-size:13px;color:var(--txt-1);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-foot{margin-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--txt-2)}
.rel-foot .num{font-family:var(--num);font-weight:700;color:var(--txt-1)}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:26px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.035);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease}
.faq-item[open]{border-color:rgba(25,227,177,.4)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 18px;font-size:15px;font-weight:600;color:var(--txt-0);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--num);font-size:20px;line-height:1;color:var(--c-primary);
  transition:transform .2s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 18px 18px;font-size:14.5px;line-height:1.85;color:var(--txt-1);background:rgba(0,0,0,.18)}

/* ---------- CTA ---------- */
.cta-band{
  margin:52px 0 0;padding:28px 22px;border-radius:var(--r-glass);
  background:linear-gradient(120deg,rgba(25,227,177,.14),rgba(124,92,255,.12) 58%,rgba(255,122,69,.1));
  border:1px solid rgba(25,227,177,.24);
  display:flex;flex-direction:column;gap:20px;
}
@media(min-width:900px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:30px 36px}}
.cta-band h2{font-size:clamp(20px,2.4vw,25px);font-weight:700;letter-spacing:-.01em}
.cta-band p{margin-top:8px;font-size:14px;color:var(--txt-1);max-width:560px}
.cta-form{display:flex;flex-wrap:wrap;gap:10px;width:100%;max-width:460px}
.cta-form input{
  flex:1 1 200px;min-width:0;height:46px;padding:0 18px;border-radius:9999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-2);color:var(--txt-0);
  font-size:14px;outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input::placeholder{color:var(--txt-2)}
.cta-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(25,227,177,.16)}
.cta-hint{font-size:12.5px;color:var(--txt-2);margin-top:10px;width:100%}
.form-msg{font-size:12.5px;margin-top:10px;width:100%}
.form-msg.ok{color:var(--c-primary)}
.form-msg.err{color:var(--c-accent)}

/* ---------- 回到顶部 ---------- */
#toTop{
  position:fixed;right:18px;bottom:22px;z-index:70;
  width:46px;height:46px;border-radius:9999px;display:grid;place-items:center;cursor:pointer;
  background:rgba(11,18,32,.82);border:1px solid var(--line-2);color:var(--txt-0);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  opacity:0;pointer-events:none;transform:translateY(10px);transition:.25s ease;
}
#toTop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
#toTop:hover{color:var(--c-primary);border-color:rgba(25,227,177,.45)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:64px;background:#03060C;border-top:1px solid var(--line);padding:46px 0 22px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}}
.footer-brand .logo-text{font-size:17px}
.footer-brand p{margin-top:14px;font-size:13.5px;line-height:1.85;color:var(--txt-1);max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--txt-0);margin-bottom:14px}
.footer-col ul li{margin-bottom:9px}
.footer-col ul li a,.footer-col ul li span{font-size:13.5px;color:var(--txt-1);transition:color .2s ease}
.footer-col ul li a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:space-between;
  font-size:12.5px;color:var(--txt-2);
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .rel-card:hover,.nav-card:hover,.btn-primary:hover,.btn-ghost:hover{transform:none}
  .rel-card:hover .rel-thumb img{transform:none}
}

/* roulang page: category2 */
:root{
  --c-primary:#19E3B1;
  --c-primary-soft:#3BF0C4;
  --c-accent:#FF7A45;
  --c-third:#7C5CFF;
  --bg-0:#05080F;
  --bg-1:#0B1220;
  --bg-2:#111C2E;
  --glass:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.08);
  --txt:#EEF3FA;
  --txt-2:#9FB0C7;
  --txt-3:#6B7C93;
  --r-card:18px;
  --r-glass:20px;
  --r-btn:9999px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(25,227,177,.5),0 10px 34px rgba(25,227,177,.28);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Barlow","Inter","Helvetica Neue",Arial,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body.site-body{
  margin:0;padding:0;background:var(--bg-0);color:var(--txt);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.site-body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:34px 34px;opacity:.06;
}
img{display:block;max-width:100%;height:auto;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
::selection{background:rgba(25,227,177,.32);color:#fff}
.container{width:100%;max-width:1280px;margin:0 auto;padding-left:16px;padding-right:16px;position:relative;z-index:1}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.78);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;transition:border-color .25s ease,background .25s ease;
}
.site-header.scrolled{border-bottom-color:rgba(25,227,177,.2);background:rgba(5,8,15,.92)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:68px;padding-top:10px;padding-bottom:10px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-bar{width:4px;height:24px;border-radius:2px;background:linear-gradient(180deg,var(--c-primary),var(--c-third))}
.logo-text{display:inline-flex;align-items:baseline;gap:2px;font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.logo-text b{color:var(--c-primary);font-weight:800}
.logo-text i{font-style:normal;color:var(--txt);font-weight:700}
.search-pill{
  flex:1 1 auto;max-width:560px;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 6px 0 16px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-pill:focus-within{border-color:rgba(25,227,177,.6);box-shadow:0 0 0 4px rgba(25,227,177,.12)}
.search-pill svg{flex:0 0 auto;width:18px;height:18px;color:var(--txt-3)}
.search-pill input{
  flex:1 1 auto;min-width:0;height:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--txt);
}
.search-pill input::placeholder{color:var(--txt-3)}
.search-btn{
  flex:0 0 auto;width:34px;height:34px;border-radius:var(--r-btn);
  display:grid;place-items:center;color:#04140F;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-soft));
  transition:transform .2s ease,box-shadow .2s ease;
}
.search-btn:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(25,227,177,.35)}
.search-btn svg{width:16px;height:16px;color:#04140F}
.nav-links{display:flex;align-items:center;gap:22px;flex:0 0 auto}
.nav-links a{
  position:relative;font-size:14px;color:var(--txt-2);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--c-primary);transition:width .2s ease-out;
}
.nav-links a:hover{color:var(--txt)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--c-primary);font-weight:600}
.nav-links a.active::before{
  content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);align-items:center;justify-content:center;
}
.menu-btn span{display:block;width:18px;height:2px;background:var(--txt);border-radius:2px;position:relative}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--txt);border-radius:2px}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
.mobile-drawer{
  display:none;border-top:1px solid var(--line-soft);background:rgba(11,18,32,.98);
  backdrop-filter:blur(18px);padding:16px;
}
.mobile-drawer.open{display:block}
.mobile-drawer .drawer-search{
  display:flex;align-items:center;gap:10px;height:46px;padding:0 6px 0 14px;
  border-radius:var(--r-btn);background:rgba(255,255,255,.05);border:1px solid var(--line);margin-bottom:14px;
}
.mobile-drawer .drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
.mobile-drawer .drawer-nav{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mobile-drawer .drawer-nav a{
  min-height:44px;display:flex;align-items:center;justify-content:center;font-size:14px;
  border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--txt-2);
}
.mobile-drawer .drawer-nav a.active{color:var(--c-primary);border-color:rgba(25,227,177,.45);font-weight:600}

/* ---------- page head ---------- */
.page-head{padding:44px 0 26px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:16px;flex-wrap:wrap}
.crumb a:hover{color:var(--c-primary)}
.crumb i{font-style:normal;color:rgba(255,255,255,.22)}
.page-head h1{
  font-size:clamp(26px,3.6vw,38px);line-height:1.28;font-weight:800;letter-spacing:-.02em;
  margin-bottom:14px;
}
.page-head h1 em{font-style:normal;color:var(--c-primary)}
.head-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1.6;
  padding:3px 10px;border-radius:6px;background:rgba(255,255,255,.06);
  border:1px solid var(--line);color:var(--txt-2);white-space:nowrap;
}
.badge-cat{background:rgba(25,227,177,.12);border-color:rgba(25,227,177,.28);color:var(--c-primary)}
.badge-live{background:rgba(255,122,69,.14);border-color:rgba(255,122,69,.38);color:var(--c-accent);font-weight:600}
.badge-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);animation:pulse 1.6s ease-in-out infinite}
.badge-tag{background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.32);color:#B9A8FF}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.head-desc{max-width:760px;color:var(--txt-2);font-size:15px;line-height:1.8}

/* ---------- filter pills ---------- */
.filter-bar{margin-top:22px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;scroll-snap-type:x mandatory;padding-bottom:4px}
.filter-bar::-webkit-scrollbar{display:none}
.filter-track{display:flex;gap:10px;min-width:max-content}
.filter-pill{
  scroll-snap-align:start;display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;
  border-radius:var(--r-btn);border:1px solid var(--line);background:var(--glass);
  font-size:14px;color:var(--txt-2);white-space:nowrap;transition:all .2s ease;
}
.filter-pill:hover{border-color:rgba(25,227,177,.4);color:var(--txt)}
.filter-pill.is-on{background:rgba(25,227,177,.14);border-color:rgba(25,227,177,.5);color:var(--c-primary);font-weight:600}

/* ---------- snapshot strip ---------- */
.snapshot{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px;
  padding:18px;border-radius:var(--r-glass);border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(25,227,177,.07),rgba(124,92,255,.06) 60%,rgba(255,255,255,.02));
}
.snapshot .sn-item{border-left:2px solid rgba(25,227,177,.5);padding-left:14px}
.snapshot .sn-num{font-family:var(--font-num);font-size:clamp(20px,2.6vw,28px);font-weight:800;letter-spacing:-.02em}
.snapshot .sn-num span{font-size:14px;color:var(--txt-2);font-weight:600;margin-left:2px}
.snapshot .sn-label{font-size:12px;color:var(--txt-3);line-height:1.6}

/* ---------- section shell ---------- */
.section{padding:56px 0}
.section-tight{padding:44px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.section-head h2{font-size:clamp(20px,2.6vw,28px);font-weight:700;letter-spacing:-.015em;position:relative;padding-left:14px}
.section-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-primary)}
.section-head .sub{font-size:13px;color:var(--txt-3);max-width:520px}
.divider-slant{height:1px;background:linear-gradient(90deg,transparent,rgba(25,227,177,.35) 30%,rgba(124,92,255,.3) 70%,transparent);transform:skewY(-.6deg);margin:0}

/* ---------- score list ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:26px;align-items:start}
.score-list{display:flex;flex-direction:column;gap:14px}
.score-row{
  position:relative;display:grid;grid-template-columns:160px minmax(0,1fr) 118px;gap:16px;align-items:center;
  padding:14px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
  overflow:hidden;
}
.score-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);
  opacity:0;transition:opacity .2s ease;box-shadow:0 0 14px rgba(25,227,177,.7);
}
.score-row:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35);background:rgba(255,255,255,.075)}
.score-row:hover::before{opacity:1}
.row-thumb{display:block;border-radius:12px;overflow:hidden;aspect-ratio:16/10;background:var(--bg-2)}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.score-row:hover .row-thumb img{transform:scale(1.04)}
.row-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.row-title{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px}
.row-title a:hover{color:var(--c-primary)}
.row-desc{
  font-size:14px;color:var(--txt-2);line-height:1.75;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.row-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--txt-3)}
.row-meta .dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.25)}
.row-score{display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.score-num{font-family:var(--font-num);font-size:24px;font-weight:800;letter-spacing:-.02em;color:var(--txt)}
.score-num i{font-style:normal;color:var(--txt-3);margin:0 2px}
.score-num.live{color:var(--c-accent)}
.score-num.done{color:var(--txt-2)}

/* ---------- sidebar ---------- */
.side{display:flex;flex-direction:column;gap:16px;position:sticky;top:92px}
.side-card{
  border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);padding:18px;
  box-shadow:var(--shadow-card);
}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--c-third)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  font-size:12px;padding:5px 11px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--txt-2);
}
.tag-cloud a:hover{border-color:rgba(124,92,255,.5);color:#C6BAFF}
.side-links{display:flex;flex-direction:column;gap:2px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:42px;
  padding:8px 10px;border-radius:12px;font-size:14px;color:var(--txt-2);
}
.side-links a:hover{background:rgba(255,255,255,.06);color:var(--c-primary)}
.side-links a svg{width:14px;height:14px;opacity:.6}
.side-note{font-size:12px;color:var(--txt-3);line-height:1.7;margin-top:12px;padding-top:12px;border-top:1px dashed rgba(255,255,255,.12)}

/* ---------- data metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.metric{
  position:relative;padding:22px 20px;border-radius:var(--r-card);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.025));
  transition:transform .2s ease,border-color .2s ease;
}
.metric:hover{transform:translateY(-2px);border-color:rgba(25,227,177,.35)}
.metric .m-idx{font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:.14em}
.metric h3{font-size:18px;font-weight:600;margin:10px 0 8px}
.metric p{font-size:14px;color:var(--txt-2);line-height:1.75}
.metric .m-bar{height:4px;border-radius:2px;margin-top:16px;background:rgba(255,255,255,.08);overflow:hidden}
.metric .m-bar i{display:block;height:100%;border-radius:2px;background:linear-gradient(90deg,var(--c-primary),var(--c-third))}
.metric .m-foot{font-size:12px;color:var(--txt-3);margin-top:8px}

/* ---------- pagination ---------- */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:26px;flex-wrap:wrap}
.pager a,.pager span.pg-cur{
  min-width:44px;height:44px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);border:1px solid var(--line);background:var(--glass);font-size:14px;color:var(--txt-2);
  transition:all .2s ease;
}
.pager a:hover{border-color:rgba(25,227,177,.45);color:var(--c-primary)}
.pager span.pg-cur{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-soft));color:#04140F;font-weight:700;border-color:transparent}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:var(--glass);overflow:hidden;transition:border-color .2s ease}
.faq-item.open{border-color:rgba(25,227,177,.42)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;text-align:left;color:var(--txt);
}
.faq-q:hover{color:var(--c-primary)}
.faq-ico{position:relative;flex:0 0 auto;width:20px;height:20px}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.faq-ico::before{left:0;top:9px;width:20px;height:2px}
.faq-ico::after{left:9px;top:0;width:2px;height:20px}
.faq-item.open .faq-ico::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 20px 20px;font-size:14px;color:var(--txt-2);line-height:1.85;border-top:1px solid rgba(255,255,255,.06);padding-top:14px;margin:0 20px 0;background:rgba(0,0,0,.16);border-radius:0 0 12px 12px}

/* ---------- cta ---------- */
.cta-band{
  position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--line);
  padding:40px 32px;
  background-image:linear-gradient(90deg,rgba(5,8,15,.94),rgba(5,8,15,.7)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-copy h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;margin-bottom:10px}
.cta-copy p{font-size:14px;color:var(--txt-2);max-width:520px;line-height:1.8}
.cta-form{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.cta-form input{
  width:280px;max-width:100%;height:48px;padding:0 18px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);border:1px solid var(--line);outline:none;font-size:14px;color:var(--txt);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input::placeholder{color:var(--txt-3)}
.cta-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(25,227,177,.14)}
.cta-hint{font-size:12px;color:var(--txt-3);margin-top:12px;width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 24px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-soft));color:#04140F;box-shadow:var(--glow)}
.btn-primary:hover{background:var(--c-primary-soft);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,227,177,.6),0 14px 42px rgba(25,227,177,.38)}
.btn-ghost{background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--txt)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(25,227,177,.5);color:var(--c-primary)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-primary);font-weight:600}
.link-arrow svg{width:15px;height:15px;transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(4px)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:64px;background:#040711;border-top:1px solid var(--line-soft);padding:52px 0 26px;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px}
.footer-brand .logo-text{font-size:20px;margin-bottom:14px;display:inline-flex}
.footer-brand p{font-size:14px;color:var(--txt-2);line-height:1.85;max-width:360px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--txt-2);line-height:1.7}
.footer-col a{border-bottom:1px solid transparent;padding-bottom:1px}
.footer-col a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.footer-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--txt-3);
}
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:70;width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;background:rgba(11,18,32,.85);border:1px solid var(--line);
  backdrop-filter:blur(14px);opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,border-color .2s ease;color:var(--c-primary);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{border-color:rgba(25,227,177,.55)}
.to-top svg{width:18px;height:18px}

@media (max-width:1279px){
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:minmax(0,1fr) 290px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex;margin-left:auto}
  .search-pill{display:none}
  .split{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .section{padding:44px 0}
  .page-head{padding:32px 0 20px}
  .snapshot{grid-template-columns:1fr;gap:16px}
  .score-row{grid-template-columns:112px minmax(0,1fr);gap:14px;align-items:flex-start}
  .row-thumb{aspect-ratio:4/3}
  .row-score{grid-column:2;flex-direction:row;align-items:center;justify-content:flex-start;gap:12px}
  .score-num{font-size:20px}
  .metrics{grid-template-columns:1fr}
  .cta-band{padding:30px 20px}
  .cta-form input{width:100%}
  .btn{width:100%}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .faq-q{font-size:15px;padding:16px}
  .faq-a p{margin:0 16px;padding:12px 0 16px}
}
@media (max-width:519px){
  .header-inner{gap:12px}
  .logo-text{font-size:17px}
  .page-head h1{font-size:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .score-row:hover,.metric:hover,.btn-primary:hover{transform:none}
  .score-row:hover .row-thumb img{transform:none}
}

/* roulang page: category3 */
:root{
  --c-primary:#19E3B1;
  --c-primary-hi:#3BF0C4;
  --c-accent:#FF7A45;
  --c-third:#7C5CFF;
  --bg-0:#05080F;
  --bg-1:#0B1220;
  --bg-2:#111C2E;
  --txt-1:#EEF3FA;
  --txt-2:#9FB0C7;
  --txt-3:#6B7C93;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.04);
  --r-sm:6px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:20px;
  --sh-card:0 10px 30px rgba(0,0,0,.45);
  --sh-glow:0 0 0 1px rgba(25,227,177,.5),0 10px 34px rgba(25,227,177,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--txt-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.num{font-family:Inter,"Barlow","Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#04231b;padding:8px 16px;border-radius:0 0 10px 0;z-index:99}
.skip-link:focus{left:0}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 16px}
@media(min-width:640px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ============ HEADER / NAV ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(5,8,15,.72);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{
  background:rgba(5,8,15,.88);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border-bottom-color:rgba(25,227,177,.2);
}
.header-inner{display:flex;align-items:center;gap:14px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-bar{width:4px;height:24px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 12px rgba(25,227,177,.6)}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.logo-text b{color:var(--c-primary);font-weight:800}
.logo-text i{font-style:normal;color:var(--txt-1)}

.search-bar{
  display:flex;align-items:center;gap:10px;height:44px;width:100%;
  padding:0 6px 0 16px;border-radius:9999px;
  background:var(--glass);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-bar:focus-within{border-color:rgba(25,227,177,.55);box-shadow:0 0 0 3px rgba(25,227,177,.14)}
.search-bar i{color:var(--txt-3);font-size:14px}
.search-bar input{flex:1;min-width:0;background:transparent;border:0;outline:0;font-size:14px;color:var(--txt-1)}
.search-bar input::placeholder{color:var(--txt-3)}
.search-btn{
  width:34px;height:34px;flex:none;border-radius:9999px;background:var(--c-primary);color:#04231b;
  display:grid;place-items:center;font-size:13px;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.search-btn:hover{background:var(--c-primary-hi);transform:scale(1.05)}
.header-search-desktop{flex:1;max-width:560px}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;padding:9px 12px;font-size:14px;color:var(--txt-2);border-radius:8px;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-links a:hover{color:var(--txt-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--c-primary)}
.nav-links a.active::after{transform:scaleX(0)}
.nav-links a.active::before{
  content:"";position:absolute;left:1px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--c-primary);
  box-shadow:0 0 8px rgba(25,227,177,.8);
}

.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:9999px;
  background:var(--c-primary);color:#04231b;font-weight:700;font-size:14px;
  border:1px solid rgba(25,227,177,.5);
  box-shadow:var(--sh-glow);
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary:hover{
  background:var(--c-primary-hi);transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(59,240,196,.6),0 14px 44px rgba(25,227,177,.38);
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:9999px;
  background:var(--glass);border:1px solid var(--line-2);
  color:var(--txt-1);font-size:14px;font-weight:600;
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(25,227,177,.4);transform:translateY(-2px)}
.link-arrow{
  display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap;
}
.link-arrow i{transition:transform .2s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

.icon-btn{
  width:42px;height:42px;flex:none;border-radius:9999px;display:none;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--txt-1);font-size:15px;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.08);border-color:rgba(25,227,177,.4)}

.mobile-search{display:none;padding:0 0 14px}
.mobile-search.open{display:block}

@media(max-width:1023px){
  .header-search-desktop{display:none}
  .nav-links{display:none}
  .header-cta{display:none}
  .icon-btn{display:grid}
  .logo{margin-right:auto}
}

/* 抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:60;display:none;
  background:rgba(5,8,15,.96);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  padding:20px 16px 40px;overflow-y:auto;
}
.mobile-drawer.open{display:block}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-title{font-size:13px;color:var(--txt-3);letter-spacing:.08em}
.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.drawer-links a{
  padding:16px 14px;border-radius:var(--r-lg);background:var(--glass-2);
  border:1px solid var(--line);font-size:15px;font-weight:600;color:var(--txt-1);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.drawer-links a:hover,.drawer-links a.active{border-color:rgba(25,227,177,.45);background:rgba(25,227,177,.08);color:var(--c-primary)}
.drawer-cta{margin-top:20px;width:100%}

/* ============ HERO ============ */
.page-hero{position:relative;overflow:hidden;display:flex;align-items:flex-end;min-height:280px;padding:40px 0 32px}
@media(min-width:768px){.page-hero{min-height:300px;padding:48px 0 40px}}
.page-hero__bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.02)}
.page-hero__mask{
  position:absolute;inset:0;
  background:
    linear-gradient(to top,rgba(5,8,15,.96) 4%,rgba(5,8,15,.72) 46%,rgba(5,8,15,.45) 100%),
    radial-gradient(120% 90% at 12% 100%,rgba(25,227,177,.16),transparent 60%);
}
.page-hero__inner{position:relative;z-index:2;width:100%}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:14px;flex-wrap:wrap}
.breadcrumb a{color:var(--txt-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.page-hero h1{
  font-size:clamp(28px,4.6vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.22;max-width:20em;
}
.page-hero__sub{color:var(--txt-2);font-size:15px;margin-top:12px;max-width:44em}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:9999px;
  font-size:12px;color:var(--txt-2);background:var(--glass-2);border:1px solid var(--line);
}
.chip--type{color:var(--c-third);border-color:rgba(124,92,255,.35);background:rgba(124,92,255,.1)}
.chip--hot{color:var(--c-accent);border-color:rgba(255,122,69,.35);background:rgba(255,122,69,.1)}
.chip--main{color:var(--c-primary);border-color:rgba(25,227,177,.32);background:rgba(25,227,177,.1)}

/* ============ SECTION 通用 ============ */
.section{padding:52px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1280px){.section{padding:88px 0}}
.section--tight{padding-top:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-title{font-size:clamp(22px,3vw,30px);font-weight:700;letter-spacing:-.01em;position:relative;padding-left:16px}
.section-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 12px rgba(25,227,177,.55);
}
.section-sub{color:var(--txt-2);font-size:14px;margin-top:8px;padding-left:16px}

/* ============ 数据条 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(min-width:900px){.stat-grid{grid-template-columns:repeat(4,1fr)}}
.stat-card{
  padding:20px;border-radius:var(--r-lg);
  background:var(--glass-2);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.stat-card:hover{border-color:rgba(25,227,177,.35);transform:translateY(-2px)}
.stat-num{display:block;font-size:clamp(28px,3.6vw,38px);font-weight:800;color:var(--c-primary);line-height:1.1}
.stat-num small{font-size:14px;font-weight:600;color:var(--txt-2);margin-left:4px}
.stat-label{display:block;margin-top:8px;font-size:12px;color:var(--txt-3)}

/* ============ 卡墙 ============ */
.card-wall{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:92px;gap:18px}
.cw{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line);background:var(--bg-2);
  display:flex;flex-direction:column;justify-content:flex-end;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  box-shadow:var(--sh-card);
}
.cw img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.cw::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(5,8,15,.94) 6%,rgba(5,8,15,.55) 48%,rgba(5,8,15,.18) 100%);
}
.cw:hover{transform:translateY(-3px);border-color:rgba(25,227,177,.4)}
.cw:hover img{transform:scale(1.04)}
.cw-body{position:relative;z-index:2;padding:16px 18px}
.cw-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:6px;
  font-size:11px;letter-spacing:.02em;margin-bottom:9px;
  color:var(--c-primary);background:rgba(25,227,177,.14);border:1px solid rgba(25,227,177,.24);
}
.cw h3{font-size:18px;font-weight:600;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cw p{margin-top:7px;font-size:13px;line-height:1.65;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cw--xl{grid-column:span 2;grid-row:span 3}
.cw--xl h3{font-size:22px}
.cw--tall{grid-column:span 1;grid-row:span 3}
.cw--mid{grid-column:span 1;grid-row:span 2}
.cw--wide{grid-column:span 2;grid-row:span 2}
.cw--wide h3{font-size:20px}

@media(max-width:1023px){
  .card-wall{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:88px;gap:16px}
  .cw--xl,.cw--tall,.cw--wide{grid-column:span 1}
  .cw--xl,.cw--tall{grid-row:span 3}
  .cw--mid,.cw--wide{grid-row:span 3}
  .cw--xl h3,.cw--wide h3{font-size:18px}
}
@media(max-width:639px){
  .card-wall{grid-template-columns:1fr;grid-auto-rows:auto;gap:14px}
  .cw{grid-column:span 1 !important;grid-row:auto !important;min-height:220px}
  .cw--xl{min-height:260px}
}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:900px){.flow{grid-template-columns:repeat(3,1fr)}}
.flow-item{
  position:relative;padding:24px 22px;border-radius:var(--r-lg);
  background:var(--bg-1);border:1px solid var(--line);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.flow-item:hover{border-color:rgba(25,227,177,.38);transform:translateY(-2px)}
.flow-step{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
  font-size:14px;font-weight:800;color:#04231b;background:var(--c-primary);
  box-shadow:0 6px 20px rgba(25,227,177,.28);
}
.flow-item h3{margin-top:16px;font-size:18px}
.flow-item p{margin-top:8px;font-size:14px;color:var(--txt-2);line-height:1.75}
.flow-line{
  margin-top:20px;height:1px;border-radius:2px;
  background:linear-gradient(90deg,rgba(25,227,177,.5),rgba(124,92,255,.28),transparent);
  transform:rotate(-1.4deg);transform-origin:left;
}

/* ============ 环境列表 ============ */
.env-wrap{display:grid;gap:28px}
@media(min-width:1024px){.env-wrap{grid-template-columns:1.25fr .85fr;gap:36px;align-items:start}}
.env-list{display:grid;gap:12px}
.env-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:16px 18px;border-radius:var(--r-md);
  background:var(--glass-2);border:1px solid var(--line);
  border-left:3px solid rgba(25,227,177,.35);
  transition:background .2s var(--ease),border-left-color .2s var(--ease);
}
.env-row:hover{background:rgba(255,255,255,.06);border-left-color:var(--c-primary)}
.env-name{font-size:15px;font-weight:600}
.env-name span{display:block;font-size:12px;font-weight:400;color:var(--txt-3);margin-top:3px}
.env-req{font-size:13px;color:var(--txt-2);text-align:right}
.env-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
.env-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.env-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:12px;color:var(--txt-2);
  background:linear-gradient(to top,rgba(5,8,15,.94),rgba(5,8,15,0));
}

/* ============ 安全 ============ */
.safety-grid{display:grid;gap:16px}
@media(min-width:768px){.safety-grid{grid-template-columns:repeat(2,1fr)}}
.safety-item{
  display:flex;gap:14px;padding:20px;border-radius:var(--r-lg);
  background:var(--bg-1);border:1px solid var(--line);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.safety-item:hover{border-color:rgba(255,122,69,.38);transform:translateY(-2px)}
.safety-icon{
  flex:none;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,122,69,.12);border:1px solid rgba(255,122,69,.28);color:var(--c-accent);font-size:15px;
}
.safety-item h3{font-size:16px}
.safety-item p{margin-top:6px;font-size:13px;color:var(--txt-2);line-height:1.75}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  border-radius:var(--r-lg);background:var(--bg-1);border:1px solid var(--line);overflow:hidden;
  transition:border-color .2s var(--ease);
}
.faq-item.open{border-color:rgba(25,227,177,.45)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
  padding:18px 20px;font-size:15px;font-weight:600;color:var(--txt-1);
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{
  position:relative;flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-2);display:grid;place-items:center;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);background:rgba(5,8,15,.55)}
.faq-a p{padding:0 20px 20px;font-size:14px;color:var(--txt-2);line-height:1.85}

/* ============ CTA 条 ============ */
.cta-bar{
  display:grid;gap:22px;padding:28px;border-radius:var(--r-xl);
  background:var(--glass-2);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:var(--sh-card);
}
@media(min-width:1024px){.cta-bar{grid-template-columns:1fr auto;align-items:center;gap:36px;padding:36px 40px}}
.cta-bar h2{font-size:clamp(20px,2.4vw,26px)}
.cta-bar p{margin-top:10px;color:var(--txt-2);font-size:14px;max-width:34em}
.cta-form{display:flex;gap:10px;flex-wrap:wrap;width:100%}
.cta-form input{
  flex:1;min-width:220px;height:48px;padding:0 18px;border-radius:9999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-2);color:var(--txt-1);font-size:14px;outline:0;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cta-form input::placeholder{color:var(--txt-3)}
.cta-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(25,227,177,.16)}
.cta-form .btn-primary{height:48px;padding:0 26px}
.form-msg{margin-top:10px;font-size:12px;color:var(--txt-3);width:100%}
.form-msg.err{color:var(--c-accent)}
.form-msg.ok{color:var(--c-primary)}

/* ============ FOOTER ============ */
.site-footer{background:#04060C;border-top:1px solid var(--line);padding:56px 0 0;margin-top:16px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .logo-text{font-size:17px}
.footer-brand p{margin-top:14px;font-size:13px;line-height:1.85;color:var(--txt-2);max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--txt-1)}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a,.footer-col span{font-size:13px;color:var(--txt-2);line-height:1.7}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;
  border-top:1px solid var(--line);margin-top:40px;padding:20px 0;font-size:12px;color:var(--txt-3);
}

/* ============ 回到顶部 ============ */
.back-top{
  position:fixed;right:18px;bottom:22px;z-index:40;
  width:46px;height:46px;border-radius:9999px;display:grid;place-items:center;
  background:rgba(255,255,255,.07);border:1px solid var(--line-2);color:var(--txt-1);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease),border-color .2s var(--ease);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{border-color:rgba(25,227,177,.5);color:var(--c-primary)}

@media(prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important}
  html{scroll-behavior:auto}
  .cw:hover,.stat-card:hover,.flow-item:hover,.safety-item:hover,.btn-primary:hover,.btn-ghost:hover{transform:none}
  .cw:hover img{transform:none}
}