/* roulang page: index */
:root{
  --bg-0:#070B16;
  --bg-1:#0C1424;
  --bg-2:#111C31;
  --brand:#2E7BFF;
  --brand-2:#19D3C5;
  --accent:#FFB648;
  --text-1:#EDF2FA;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(140,170,220,.14);
  --line-strong:rgba(46,123,255,.35);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:12px;
  --shadow:0 10px 30px rgba(4,10,24,.45);
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"Inter","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--text-1);letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:700;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 16px;}
a{color:var(--brand-2);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--brand);}
img{max-width:100%;height:auto;display:block;}
ul,ol{padding-left:20px;}
::selection{background:rgba(46,123,255,.35);color:#fff;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}

.wrap{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}
@media (max-width:1399.98px){.wrap{max-width:1140px;}}
@media (max-width:767.98px){.wrap{padding:0 16px;}}

.section{padding:96px 0;position:relative;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--flush{padding-top:0;}
@media (max-width:991.98px){.section{padding:72px 0;}}
@media (max-width:767.98px){.section{padding:56px 0;}}

.grid-texture{position:relative;}
.grid-texture > .texture{position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(140,170,220,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,220,.055) 1px,transparent 1px);background-size:48px 48px;}

.sec-head{max-width:820px;margin-bottom:48px;}
.sec-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.18em;color:var(--brand-2);text-transform:uppercase;}
.sec-head h2{margin:14px 0 16px;}
.sec-head p{color:var(--text-2);margin:0;font-size:16px;}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center;}

/* ------- header ------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(18,28,48,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease;
}
.site-header.is-scrolled{background:rgba(7,11,22,.94);}
.site-header .bar{display:flex;align-items:center;gap:28px;height:76px;transition:height .25s ease;}
.site-header.is-scrolled .bar{height:64px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;min-height:44px;}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;flex-shrink:0;}
.brand-mark i{display:block;width:16px;height:8px;border-radius:999px;background:#070B16;transform:rotate(-32deg);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:18px;font-weight:700;color:var(--text-1);letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.3em;color:var(--text-3);}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-main a{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 15px;font-size:15px;color:var(--text-2);border-radius:10px;}
.nav-main a::after{content:"";position:absolute;left:15px;right:15px;bottom:6px;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transform:scaleX(0);transform-origin:left;transition:transform .28s ease;}
.nav-main a:hover{color:var(--text-1);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.is-active{color:var(--text-1);font-weight:600;}
.nav-main a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:rgba(17,28,49,.7);color:var(--text-1);font-size:18px;align-items:center;justify-content:center;}

.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  background:var(--accent);color:#1A1206;font-size:15px;font-weight:700;
  box-shadow:0 6px 22px rgba(255,182,72,.18);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.btn-accent:hover{filter:brightness(1.08);color:#1A1206;transform:translateY(-2px);box-shadow:0 0 24px rgba(255,182,72,.42);}
.btn-accent:active{transform:translateY(1px);box-shadow:none;}

.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);border:1px solid transparent;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121A;font-size:16px;font-weight:700;
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.btn-brand:hover{filter:brightness(1.08);color:#04121A;transform:translateY(-2px);box-shadow:0 0 24px rgba(46,123,255,.35);}
.btn-brand:active{transform:translateY(1px);box-shadow:none;}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);
  background:transparent;border:1px solid rgba(46,123,255,.55);color:#79B0FF;
  font-size:16px;font-weight:600;
  transition:transform .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
}
.btn-ghost:hover{background:rgba(46,123,255,.12);border-color:var(--brand);color:#A8CCFF;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}

.mobile-nav{background:var(--bg-1);border-left:1px solid var(--line);color:var(--text-1);width:310px;}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:20px 22px;}
.mobile-nav .btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.75;}
.mobile-links{display:flex;flex-direction:column;}
.mobile-links a{display:flex;align-items:center;min-height:56px;font-size:17px;color:var(--text-2);border-bottom:1px solid var(--line);}
.mobile-links a:hover,.mobile-links a.is-active{color:var(--text-1);}
.mobile-nav .offcanvas-body{display:flex;flex-direction:column;padding:18px 22px 26px;}
.mobile-nav .btn-accent{margin-top:auto;width:100%;}

/* ------- hero ------- */
.hero{position:relative;overflow:hidden;display:flex;align-items:center;min-height:620px;padding:88px 0 80px;background:var(--bg-0);}
.hero::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.5;}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,11,22,.95) 0%,rgba(7,11,22,.82) 46%,rgba(7,11,22,.66) 100%);}
.hero > .wrap{position:relative;z-index:2;}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(17,28,49,.7);font-size:13px;color:var(--text-2);}
.hero-tag i{color:var(--brand-2);}
.hero h1{margin:24px 0 0;}
.hero h1 span{display:block;background:linear-gradient(100deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;font-size:.72em;margin-top:10px;letter-spacing:0;}
.hero-sub{margin:22px 0 0;max-width:640px;font-size:17px;color:var(--text-2);}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:34px 0 0;}
.hero-points li{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;border:1px solid var(--line);background:rgba(17,28,49,.62);font-size:13px;color:var(--text-2);}
.hero-points li i{color:var(--brand-2);font-size:12px;}

.glass-card{
  background:rgba(18,28,48,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  padding:24px;
}
.snap-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.snap-head h3{font-size:16px;}
.dot-live{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--brand-2);font-family:var(--mono);}
.dot-live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 4px rgba(25,211,197,.15);}
.snap-list{list-style:none;padding:0;margin:0;}
.snap-list li{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--text-2);}
.snap-list li:last-child{border-bottom:0;padding-bottom:0;}
.snap-list b{font-family:var(--mono);font-size:18px;font-weight:700;color:var(--accent);letter-spacing:-.02em;}

/* ------- stats ------- */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r-panel);background:var(--bg-1);overflow:hidden;}
.stat-item{padding:34px 26px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-family:var(--mono);font-size:clamp(28px,3.2vw,40px);font-weight:700;color:var(--accent);letter-spacing:-.02em;line-height:1.1;font-variant-numeric:tabular-nums;}
.stat-num small{font-size:.5em;font-weight:600;margin-left:4px;color:var(--text-2);}
.stat-label{margin-top:10px;font-size:14px;color:var(--text-2);}
.stat-note{margin-top:16px;font-size:13px;color:var(--text-3);}

/* ------- compare table ------- */
.compare-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-panel);background:var(--bg-1);-webkit-overflow-scrolling:touch;}
table.compare{width:100%;min-width:760px;border-collapse:collapse;}
table.compare th,table.compare td{padding:18px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);vertical-align:middle;}
table.compare thead th{position:sticky;top:0;z-index:3;background:var(--bg-2);color:var(--text-2);font-size:14px;font-weight:600;}
table.compare thead th.is-rec{color:var(--text-1);background:rgba(46,123,255,.12);box-shadow:inset 0 3px 0 var(--brand);}
table.compare tbody td{color:var(--text-2);}
table.compare tbody td:first-child{color:var(--text-1);font-weight:600;min-width:200px;}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare tbody tr:hover{background:rgba(140,170,220,.06);}
.cell-yes{display:inline-flex;align-items:center;gap:8px;color:var(--brand-2);font-size:14px;}
.cell-yes i{font-size:12px;}
.cell-no{color:var(--text-3);font-size:15px;letter-spacing:.1em;}
.table-hint{margin-top:14px;font-size:13px;color:var(--text-3);}

/* ------- tier cards ------- */
.tier-card{position:relative;display:flex;flex-direction:column;height:100%;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-panel);padding:28px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.tier-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.tier-card .tier-name{font-size:19px;font-weight:700;}
.tier-card .tier-tag{margin-top:8px;font-size:14px;color:var(--text-2);}
.tier-card ul{list-style:none;padding:0;margin:22px 0 0;}
.tier-card ul li{display:flex;gap:10px;font-size:14px;color:var(--text-2);padding:8px 0;}
.tier-card ul li i{color:var(--brand-2);font-size:12px;margin-top:7px;}
.tier-card .tier-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.tier-card .tier-price{font-family:var(--mono);font-size:15px;color:var(--text-2);}
.tier-card .tier-link{font-size:15px;font-weight:600;color:var(--brand-2);display:inline-flex;align-items:center;gap:6px;min-height:44px;}
.tier-card--featured{
  background:rgba(18,28,48,.6);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-color:rgba(46,123,255,.5);
}
.tier-card--featured::before{
  content:"权益最全";
  position:absolute;top:-1px;right:-1px;
  padding:7px 16px;font-size:12px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  border-radius:0 var(--r-panel) 0 16px;
}
.tier-card--tall{padding-top:40px;}

.badge-tier{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--text-2);}
.badge-tier--accent{color:var(--accent);border-color:rgba(255,182,72,.45);background:rgba(255,182,72,.1);}

/* ------- content cards ------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.chip{display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:999px;border:1px solid var(--line);background:var(--bg-1);color:var(--text-2);font-size:14px;cursor:pointer;transition:all .2s ease;}
.chip:hover{color:var(--text-1);border-color:var(--line-strong);}
.chip.is-on{background:rgba(46,123,255,.14);border-color:rgba(46,123,255,.5);color:var(--text-1);font-weight:600;}

.content-card{display:flex;flex-direction:column;height:100%;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.content-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.content-card:hover h3{color:var(--brand-2);}
.content-media{position:relative;overflow:hidden;}
.content-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease;}
.content-card:hover .content-media img{transform:scale(1.04);}
.content-media::after{content:"";position:absolute;inset:0;background:rgba(7,11,22,.12);}
.content-media .lock{position:absolute;top:12px;right:12px;z-index:2;width:32px;height:32px;border-radius:9px;display:grid;place-items:center;background:rgba(7,11,22,.72);border:1px solid var(--line);color:var(--text-1);font-size:13px;}
.content-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.content-body h3{font-size:17px;margin:10px 0 8px;transition:color .2s ease;}
.content-body p{font-size:14px;color:var(--text-2);margin:0;}
.badge-exclusive{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;color:var(--brand-2);border:1px solid rgba(25,211,197,.35);background:rgba(25,211,197,.1);}
.badge-open{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;color:var(--text-2);border:1px solid var(--line);background:rgba(17,28,49,.7);}
.content-card--wide{flex-direction:row;}
.content-card--wide .content-media{flex:0 0 42%;}
.content-card--wide .content-media img{height:100%;aspect-ratio:auto;}
@media (max-width:767.98px){
  .content-card--wide{flex-direction:column;}
  .content-card--wide .content-media{flex:0 0 auto;}
  .content-card--wide .content-media img{aspect-ratio:16/9;}
}

/* ------- news / cms ------- */
.news-section .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;max-width:100%;}
.news-section .sec-head .more-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-2);min-height:44px;}
.news-item{display:flex;gap:20px;height:100%;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.news-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.news-thumb{flex:0 0 168px;border-radius:var(--r-img);overflow:hidden;background:linear-gradient(135deg,rgba(46,123,255,.22),rgba(25,211,197,.14));}
.news-thumb img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;}
.news-body{display:flex;flex-direction:column;min-width:0;flex:1;}
.news-title{font-size:17px;font-weight:600;color:var(--text-1);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;}
.news-item:hover .news-title{color:var(--brand-2);}
.news-sum{margin:10px 0 0;font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--text-3);}
.news-meta .pill{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;border:1px solid var(--line);color:var(--text-2);font-size:12px;}
.news-meta .time{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.news-item .stretched{position:absolute;inset:0;}
.news-wrap{position:relative;}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:240px;border:1px dashed var(--line);border-radius:var(--r-panel);background:var(--bg-1);text-align:center;padding:40px 24px;}
.empty-state i{font-size:26px;color:var(--text-3);}
.empty-state p{margin:0;color:var(--text-2);font-size:15px;}

/* ------- faq ------- */
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.faq-acc .accordion-item:last-child{border-bottom:0;}
.faq-acc .accordion-button{position:relative;background:transparent;color:var(--text-1);font-size:17px;font-weight:600;padding:22px 48px 22px 0;box-shadow:none;border-radius:0;line-height:1.5;}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-2);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-acc .accordion-button::after{display:none;}
.faq-acc .accordion-button::before{content:"+";position:absolute;right:10px;top:50%;transform:translateY(-50%);font-size:24px;font-weight:300;color:var(--text-3);transition:color .2s ease;}
.faq-acc .accordion-button:not(.collapsed)::before{content:"−";color:var(--brand-2);}
.faq-acc .accordion-body{background:var(--bg-2);border-radius:12px;padding:20px;font-size:15px;line-height:1.8;color:var(--text-2);margin-bottom:20px;}

/* ------- cta band ------- */
.cta-band{position:relative;overflow:hidden;background:rgba(46,123,255,.08);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:80px 0;}
.cta-band .cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);}
.cta-band p{margin:12px 0 0;color:var(--text-2);font-size:15px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.cta-actions .link-plain{font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line);padding-bottom:3px;}
.cta-actions .link-plain:hover{color:var(--brand-2);border-color:var(--brand-2);}

/* ------- footer ------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-about p{font-size:14px;color:var(--text-2);margin:0 0 10px;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-1);}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{display:inline-flex;align-items:center;min-height:32px;color:var(--text-2);font-size:14px;}
.footer-col a:hover{color:var(--brand-2);}
.footer-contact{font-size:14px;color:var(--text-2);}
.footer-contact span{display:block;margin-bottom:10px;}
.footer-contact b{color:var(--text-1);font-weight:600;}
.footer-bottom{margin-top:56px;border-top:1px solid var(--line);padding:24px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:var(--text-3);}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand-2);}

@media (max-width:1199.98px){
  .nav-main a{padding:0 11px;font-size:14px;}
}
@media (max-width:991.98px){
  .nav-main{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-accent{display:none;}
  .hero{min-height:auto;padding:64px 0 60px;}
  .hero::after{background:linear-gradient(180deg,rgba(7,11,22,.94) 0%,rgba(7,11,22,.78) 60%,rgba(7,11,22,.9) 100%);}
  .hero-media{margin-top:44px;}
  .stat-bar{grid-template-columns:repeat(2,1fr);}
  .stat-item{border-right:1px solid var(--line);}
  .stat-item:nth-child(2n){border-right:0;}
  .stat-item:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:767.98px){
  .news-item{flex-direction:column;}
  .news-thumb{flex:0 0 auto;}
  .news-thumb img{aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:56px 0;}
  .hero-cta .btn-brand,.hero-cta .btn-ghost{width:100%;}
  .stat-item{padding:24px 18px;}
  .filter-row .chip{min-height:40px;padding:0 14px;font-size:13px;}
}
@media (max-width:575.98px){
  .hero h1{font-size:30px;}
  .hero h1 span{font-size:.66em;}
  .stat-bar{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
  .tier-card{padding:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --bg-0:#070B16;
  --bg-1:#0C1424;
  --bg-2:#111C31;
  --brand:#2E7BFF;
  --brand-2:#19D3C5;
  --accent:#FFB648;
  --text-1:#EDF2FA;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(140,170,220,.14);
  --line-strong:rgba(46,123,255,.35);
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow:0 10px 30px rgba(4,10,24,.45);
  --font-sans:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --wrap:1320px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(46,123,255,.35);color:#fff}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.grid-texture{
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:52px 52px;
}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(9,14,26,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(7,11,22,.94);border-bottom-color:rgba(140,170,220,.2)}
.header-inner{display:flex;align-items:center;gap:28px;height:76px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;transform:rotate(45deg);
  box-shadow:0 0 0 1px rgba(46,123,255,.35);
}
.brand-mark i{display:block;width:12px;height:12px;border:2px solid #06101F;border-radius:3px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.03em;color:var(--text-1)}
.brand-text em{font-style:normal;font-size:10.5px;letter-spacing:.26em;color:var(--text-3);margin-top:3px}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-main a{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 2px;
  transition:color .2s ease;white-space:nowrap;
}
.nav-main a:hover{color:var(--text-1)}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-main a:hover::after,.nav-main a.is-active::after{transform:scaleX(1)}
.nav-main a.is-active{color:var(--text-1)}
.nav-main a:focus-visible{outline:2px solid var(--brand-2);outline-offset:4px;border-radius:4px}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:11px 22px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;color:#1E1400;
  background:linear-gradient(135deg,#FFC96F,var(--accent));
  border:0;transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-accent:hover{filter:brightness(1.06);box-shadow:0 0 22px rgba(255,182,72,.38);transform:translateY(-2px);color:#1E1400}
.btn-accent:active{transform:translateY(0)}
.btn-accent:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--bg-2);
  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(--text-1);transition:transform .2s ease}
.nav-toggle:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}

/* ---------- drawer ---------- */
.offcanvas.drawer{background:var(--bg-1);color:var(--text-1);width:320px;border-left:1px solid var(--line)}
.drawer .offcanvas-header{padding:20px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}
.drawer-title{font-size:16px;font-weight:700}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--bg-2);color:var(--text-2);font-size:22px;line-height:1;
  display:grid;place-items:center;transition:color .2s,border-color .2s;
}
.drawer-close:hover{color:var(--text-1);border-color:var(--line-strong)}
.drawer-body{padding:12px 22px 24px;display:flex;flex-direction:column}
.drawer-body a{
  display:flex;align-items:center;font-size:17px;line-height:1;min-height:56px;
  color:var(--text-2);border-bottom:1px solid var(--line);
}
.drawer-body a:hover,.drawer-body a.is-active{color:var(--brand-2)}
.drawer-foot{padding:18px 22px 26px;border-top:1px solid var(--line)}
.drawer-foot .btn-accent{width:100%}

/* ---------- page banner ---------- */
.page-banner{
  position:relative;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,22,.86),rgba(7,11,22,.94));
}
.page-banner .wrap{position:relative;z-index:1;padding-top:34px;padding-bottom:34px}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13.5px;color:var(--text-3)}
.crumb a{color:var(--text-2);transition:color .2s}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{opacity:.55}
.crumb .current{
  color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- article layout ---------- */
.article-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  grid-template-areas:"main side";
  gap:56px;
  padding:52px 0 0;
  align-items:start;
}
.article-main{grid-area:main;min-width:0}
.side-col{grid-area:side}
.article-head{padding-bottom:26px;border-bottom:1px solid var(--line);margin-bottom:34px}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--radius-pill);
  font-size:12.5px;color:var(--brand-2);
  background:rgba(25,211,197,.1);border:1px solid rgba(25,211,197,.28);
}
.article-head h1{
  font-size:clamp(26px,3.6vw,40px);line-height:1.3;color:var(--text-1);
  margin:18px 0 18px;letter-spacing:-.01em;
}
.meta-row{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:13.5px;color:var(--text-3)}
.meta-row b{color:var(--text-2);font-weight:500}

.article-body{max-width:800px;font-size:16px;line-height:1.85;color:var(--text-2)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:clamp(21px,2.4vw,27px);line-height:1.4;color:var(--text-1);
  margin:44px 0 16px;padding-left:14px;border-left:3px solid var(--brand);
}
.article-body h3{font-size:19px;line-height:1.45;color:var(--text-1);margin:34px 0 12px}
.article-body h4{font-size:17px;color:var(--text-1);margin:26px 0 10px}
.article-body strong{color:var(--text-1)}
.article-body a{color:var(--brand-2);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#7FF3E9}
.article-body img{border-radius:12px;margin:24px 0;height:auto}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px}
.article-body ul li{list-style:disc;margin-bottom:8px}
.article-body ol li{list-style:decimal;margin-bottom:8px}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;background:var(--bg-2);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--text-2);
}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;
  margin:26px 0;font-size:14.5px;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.article-body th{background:var(--bg-2);color:var(--text-1);font-weight:600}
.article-body code{background:var(--bg-2);padding:2px 7px;border-radius:6px;font-size:14px;color:var(--brand-2)}
.article-body pre{
  background:var(--bg-2);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;margin:22px 0;font-size:14px;line-height:1.7;
}

.article-foot{margin-top:40px;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.article-tags{display:flex;flex-wrap:wrap;gap:10px}
.article-tags span{
  padding:5px 14px;border-radius:var(--radius-pill);font-size:12.5px;
  color:var(--text-2);background:var(--bg-2);border:1px solid var(--line);
}
.back-links{display:flex;flex-wrap:wrap;gap:20px;font-size:14.5px}
.back-links a{color:var(--brand-2);transition:opacity .2s}
.back-links a:hover{opacity:.78}

/* ---------- sidebar ---------- */
.side-panel{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:22px;position:sticky;top:96px;
}
.side-panel h3{font-size:15px;color:var(--text-1);margin-bottom:14px;letter-spacing:.02em}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-link{
  display:block;font-size:13.5px;line-height:1.6;color:var(--text-2);
  padding:7px 10px;border-radius:8px;border-left:2px solid transparent;
  transition:background .2s,color .2s,border-color .2s;
  overflow:hidden;text-overflow:ellipsis;
}
.toc-link.is-sub{padding-left:22px;font-size:13px;color:var(--text-3)}
.toc-link:hover{background:var(--bg-2);color:var(--text-1);border-left-color:var(--brand)}
.side-note{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.7}
.side-note a{color:var(--brand-2)}

/* ---------- empty state ---------- */
.empty-state{
  min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;gap:14px;padding:48px 24px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-panel);
}
.empty-icon{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  background:var(--bg-2);border:1px solid var(--line);color:var(--brand-2);font-size:24px;
}
.empty-state h2{font-size:20px;color:var(--text-1)}
.empty-state p{font-size:14.5px;color:var(--text-3);max-width:460px;line-height:1.8}

/* ---------- buttons ---------- */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:13px 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;color:#04121F;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  border:0;transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-brand:hover{filter:brightness(1.08);box-shadow:0 0 24px rgba(46,123,255,.35);transform:translateY(-2px);color:#04121F}
.btn-brand:active{transform:translateY(0)}
.btn-brand:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;color:var(--brand-2);
  background:transparent;border:1px solid rgba(46,123,255,.5);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:rgba(46,123,255,.12);color:#fff;transform:translateY(-2px)}
.btn-ghost:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}

/* ---------- related ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{margin-bottom:32px}
.section-head h2{font-size:clamp(23px,2.8vw,32px);line-height:1.35;color:var(--text-1)}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-3);max-width:660px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.related-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .thumb img{transform:scale(1.04)}
.related-card .thumb::after{content:"";position:absolute;inset:0;background:rgba(7,11,22,.1)}
.related-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card .body h3{font-size:17px;line-height:1.5;color:var(--text-1);transition:color .2s}
.related-card:hover .body h3{color:var(--brand-2)}
.related-card .body p{font-size:14px;color:var(--text-3);line-height:1.75}
.related-card .body .more{margin-top:auto;font-size:13.5px;color:var(--brand-2)}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,rgba(46,123,255,.08),rgba(25,211,197,.05));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.6;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:52px 52px;
}
.cta-inner{position:relative;z-index:1;padding:72px 0;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);color:var(--text-1);max-width:620px;line-height:1.4}
.cta-inner p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.link-arrow{font-size:14.5px;color:var(--brand-2);position:relative}
.link-arrow::after{content:"→";margin-left:6px;transition:margin-left .2s ease}
.link-arrow:hover::after{margin-left:10px}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-col h4{font-size:14.5px;color:var(--text-1);margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul a{font-size:14px;color:var(--text-3);transition:color .2s}
.footer-col ul a:hover{color:var(--brand-2)}
.footer-about p{font-size:14px;color:var(--text-3);line-height:1.85;margin-bottom:10px;max-width:400px}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact span{font-size:14px;color:var(--text-3)}
.footer-contact b{color:var(--text-2);font-weight:500}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1399.98px){
  .wrap{max-width:1140px}
}
@media (max-width:1199.98px){
  .wrap{max-width:100%}
  .nav-main{gap:20px}
  .nav-main a{font-size:14.5px}
}
@media (max-width:991.98px){
  .nav-main{display:none}
  .header-actions .btn-accent{display:none}
  .nav-toggle{display:flex}
  .article-shell{grid-template-columns:minmax(0,1fr);grid-template-areas:"main" "side";gap:36px}
  .side-panel{position:static}
  .related-grid{display:flex;overflow-x:auto;gap:16px;padding-bottom:6px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
  .related-card{min-width:76%;scroll-snap-align:start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .section{padding:72px 0}
  .cta-inner{padding:56px 0}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .header-inner{height:64px;gap:16px}
  .site-header.is-scrolled .header-inner{height:58px}
  .brand-text strong{font-size:16px}
  .article-shell{padding-top:36px}
  .article-body{font-size:15.5px}
  .section{padding:56px 0}
  .related-card{min-width:84%}
  .cta-actions{width:100%}
  .cta-actions .btn-brand{width:100%}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .crumb .current{max-width:180px}
  .article-head h1{font-size:24px}
  .empty-state{padding:36px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .btn-brand:hover,.btn-ghost:hover,.related-card:hover,.btn-accent:hover{transform:none;box-shadow:none}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B16;
  --bg-1:#0C1424;
  --bg-2:#111C31;
  --brand:#2E7BFF;
  --brand-deep:#1E63E0;
  --brand-2:#19D3C5;
  --accent:#FFB648;
  --text-1:#EDF2FA;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(140,170,220,.14);
  --line-hi:rgba(46,123,255,.35);
  --glass:rgba(18,28,48,.55);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-img:12px;
  --shadow:0 10px 30px rgba(4,10,24,.45);
  --wrap:1320px;
  --font-cn:"HarmonyOS Sans","Source Han Sans SC","PingFang SC","Microsoft YaHei","Inter","Segoe UI",system-ui,-apple-system,sans-serif;
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--text-1);
  --bs-border-color:var(--line);
  --bs-link-color:var(--brand);
  --bs-link-hover-color:var(--brand-2);
  --bs-font-sans-serif:var(--font-cn);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease;}
a:hover{color:var(--brand-2);}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0;padding:0;}
ul,ol{list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;}

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){ .wrap{max-width:1320px;} }
@media (min-width:1200px) and (max-width:1399.98px){ .wrap{max-width:1140px;} }

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(9,15,28,.92);box-shadow:0 8px 26px rgba(4,10,24,.5);}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border:1px solid rgba(46,123,255,.55);
  border-radius:10px;
  transform:rotate(45deg);
  background:linear-gradient(135deg,rgba(46,123,255,.22),rgba(25,211,197,.14));
  flex:0 0 auto;
}
.brand-mark i{
  width:12px;height:12px;
  display:block;
  border-radius:3px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text-1);}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.32em;color:var(--text-3);}
.nav-main{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-main a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
}
.nav-main a:hover{color:var(--text-1);background:rgba(46,123,255,.08);}
.nav-main a.is-active{color:var(--text-1);font-weight:600;}
.nav-main a.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:6px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn-accent{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border:1px solid rgba(255,182,72,.5);
  border-radius:var(--r-btn);
  background:linear-gradient(135deg,rgba(255,182,72,.16),rgba(255,182,72,.06));
  color:var(--accent);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:box-shadow .22s ease,transform .22s ease,background-color .22s ease;
}
.btn-accent:hover{
  color:#0A0F1C;
  background:linear-gradient(135deg,#FFC96A,#FFA93B);
  box-shadow:0 0 22px rgba(255,182,72,.35);
  transform:translateY(-1px);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--bg-2);
  color:var(--text-1);
  font-size:17px;
}
.offcanvas.drawer{
  background:var(--bg-1);
  border-left:1px solid var(--line);
  color:var(--text-1);
  width:300px;
}
.drawer .drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;
  border-bottom:1px solid var(--line);
}
.drawer .drawer-close{
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--bg-2);
  color:var(--text-1);
}
.drawer-nav{display:flex;flex-direction:column;padding:12px 12px 0;}
.drawer-nav a{
  display:flex;align-items:center;
  height:56px;
  padding:0 14px;
  font-size:17px;
  color:var(--text-2);
  border-radius:var(--r-btn);
}
.drawer-nav a.is-active{color:var(--text-1);background:rgba(46,123,255,.12);font-weight:600;}
.drawer-foot{padding:16px 20px 24px;margin-top:auto;}
.drawer-body{display:flex;flex-direction:column;height:100%;}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;
  min-height:340px;
  display:flex;
  align-items:center;
  background-image:linear-gradient(90deg,rgba(7,11,22,.88) 0%,rgba(7,11,22,.72) 55%,rgba(7,11,22,.6) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-cat::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,170,220,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,220,.06) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.hero-cat .wrap{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border:1px solid var(--line-hi);
  border-radius:999px;
  background:rgba(46,123,255,.1);
  color:var(--brand-2);
  font-size:13px;
  letter-spacing:.06em;
  margin-bottom:18px;
}
.hero-title{
  font-size:clamp(28px,3.6vw,44px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.01em;
  max-width:760px;
}
.hero-title .hl{
  background:linear-gradient(100deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin-top:16px;
  max-width:720px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.75;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(17,28,49,.7);
  color:var(--text-2);
  font-size:13px;
}
.badge-pill i{color:var(--brand-2);font-size:13px;}

/* ---------- 面包屑 ---------- */
.crumb{
  padding:18px 0;
  border-bottom:1px solid var(--line);
  background:var(--bg-0);
}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"›";color:var(--text-3);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand-2);}
.crumb .current{color:var(--text-1);font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:820px;margin-bottom:40px;}
.sec-title{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
}
.sec-title .hl{background:linear-gradient(100deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;}
.sec-desc{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.75;}
.sec-note{margin-top:14px;font-size:13.5px;color:var(--text-3);}

/* ---------- 对比表 ---------- */
.compare-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  background:var(--bg-1);
  overflow:hidden;
}
.compare-scroll{overflow-x:auto;}
.compare-scroll::-webkit-scrollbar{height:8px;}
.compare-scroll::-webkit-scrollbar-thumb{background:rgba(46,123,255,.4);border-radius:8px;}
table.compare{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:14.5px;
}
table.compare thead th{
  position:sticky;
  top:0;
  background:var(--bg-2);
  padding:18px 20px;
  text-align:left;
  font-size:14px;
  font-weight:600;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.compare thead th:first-child{color:var(--text-1);}
table.compare thead th.recommend{
  color:var(--text-1);
  background:linear-gradient(180deg,rgba(46,123,255,.18),rgba(17,28,49,1));
  box-shadow:inset 0 3px 0 0 var(--brand);
}
table.compare tbody th{
  padding:16px 20px;
  text-align:left;
  font-weight:500;
  color:var(--text-1);
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
table.compare tbody td{
  padding:16px 20px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.compare tbody tr:hover th,
table.compare tbody tr:hover td{background:rgba(46,123,255,.06);}
table.compare tbody tr:last-child th,
table.compare tbody tr:last-child td{border-bottom:none;}
.yes{color:var(--brand-2);font-weight:600;}
.no{color:var(--text-3);}
.tick{
  display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:22px;
  border-radius:999px;
  background:rgba(25,211,197,.14);
  color:var(--brand-2);
  font-size:12px;
  margin-right:8px;
}
.dash{color:var(--text-3);}
.table-hint{
  margin-top:14px;
  font-size:13px;
  color:var(--text-3);
  display:flex;
  align-items:center;
  gap:8px;
}
.table-hint i{color:var(--brand-2);}

/* 移动端等级卡 */
.tier-cards{display:none;gap:16px;flex-direction:column;}
.tier-card{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-1);
  padding:20px;
}
.tier-card h4{font-size:17px;font-weight:600;margin-bottom:12px;}
.tier-card li{
  display:flex;
  gap:10px;
  padding:8px 0;
  font-size:14.5px;
  color:var(--text-2);
  border-bottom:1px dashed rgba(140,170,220,.12);
}
.tier-card li:last-child{border-bottom:none;}
.tier-card li i{color:var(--brand-2);margin-top:4px;font-size:12px;}
.tier-card li.is-off{color:var(--text-3);}
.tier-card li.is-off i{color:var(--text-3);}

/* ---------- 规格清单 ---------- */
.spec-list{
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  background:var(--bg-1);
  padding:8px 28px;
}
.spec-list .row-item{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:24px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.spec-list .row-item:last-child{border-bottom:none;}
.spec-list dt{
  font-size:15px;
  font-weight:600;
  color:var(--text-1);
  display:flex;
  align-items:center;
  gap:10px;
}
.spec-list dt i{color:var(--brand);font-size:13px;}
.spec-list dd{font-size:15px;color:var(--text-2);line-height:1.75;}
.spec-list dd b{color:var(--text-1);font-weight:600;}

/* ---------- 不等等宽图文 ---------- */
.split-uneven{
  display:grid;
  grid-template-columns:1.55fr 1fr;
  gap:24px;
}
.cover-card{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-1);
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.cover-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow);}
.cover-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--bg-2),var(--bg-1));}
.cover-card .thumb img{width:100%;height:100%;object-fit:cover;}
.cover-card .thumb::after{content:"";position:absolute;inset:0;background:rgba(7,11,22,.18);}
.cover-card .body{padding:24px;}
.cover-card h3{font-size:19px;font-weight:600;line-height:1.4;margin-bottom:10px;}
.cover-card:hover h3{color:var(--brand);}
.cover-card p{color:var(--text-2);font-size:15px;line-height:1.75;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(17,28,49,.8);
  font-size:13px;
  color:var(--text-2);
}
.tag.brand{color:var(--brand-2);border-color:rgba(25,211,197,.3);}

/* ---------- 数据条 ---------- */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat-item{
  padding:32px 24px;
  border-right:1px solid var(--line);
}
.stat-item:last-child{border-right:none;}
.stat-num{
  font-size:clamp(26px,3vw,36px);
  font-weight:700;
  line-height:1.1;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.stat-num span{font-size:16px;font-weight:500;margin-left:4px;color:var(--text-2);}
.stat-label{margin-top:10px;font-size:14.5px;color:var(--text-2);}
.stat-sub{margin-top:4px;font-size:13px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:transparent;
  border:none;
  border-bottom:1px solid var(--line);
  border-radius:0;
}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  padding:22px 44px 22px 0;
  box-shadow:none;
  border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-2);background:transparent;}
.faq-acc .accordion-button::after{
  background-image:none;
  content:"+";
  font-size:22px;
  font-weight:400;
  color:var(--brand-2);
  width:auto;height:auto;
  margin-left:auto;
  transform:none;
  transition:transform .22s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-2);outline-offset:2px;}
.faq-acc .accordion-body{
  background:var(--bg-2);
  border-radius:var(--r-card);
  padding:20px;
  margin-bottom:20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ---------- 相关栏目 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.related-card{
  display:flex;
  align-items:center;
  gap:20px;
  padding:24px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-1);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow);}
.related-card .ico{
  flex:0 0 auto;
  width:52px;height:52px;
  display:grid;place-items:center;
  border-radius:14px;
  background:linear-gradient(135deg,rgba(46,123,255,.2),rgba(25,211,197,.12));
  border:1px solid var(--line-hi);
  color:var(--brand-2);
  font-size:20px;
}
.related-card h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.related-card p{font-size:14.5px;color:var(--text-2);line-height:1.7;}
.related-card .arrow{margin-left:auto;color:var(--text-3);font-size:16px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  padding:56px 48px;
  background:linear-gradient(135deg,rgba(46,123,255,.1),rgba(25,211,197,.06)),var(--bg-1);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,170,220,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,220,.05) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.cta-band .inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;}
.cta-band p{margin-top:12px;color:var(--text-2);max-width:620px;}
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:14px 28px;
  border:none;
  border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04101F;
  font-size:15.5px;
  font-weight:700;
  cursor:pointer;
  transition:filter .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn-main:hover{filter:brightness(1.08);box-shadow:0 0 24px rgba(46,123,255,.35);transform:translateY(-2px);color:#04101F;}
.btn-main:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:14px 26px;
  border:1px solid var(--line-hi);
  border-radius:var(--r-btn);
  background:transparent;
  color:var(--brand);
  font-size:15.5px;
  font-weight:600;
  transition:background-color .22s ease,color .22s ease,transform .22s ease;
}
.btn-ghost:hover{background:rgba(46,123,255,.12);color:var(--brand-2);transform:translateY(-2px);}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:18px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col a{font-size:14.5px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand-2);}
.footer-about p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin-bottom:10px;max-width:420px;}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact span{font-size:14.5px;color:var(--text-2);}
.footer-contact b{color:var(--text-1);font-weight:600;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 28px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-main a{padding:0 10px;font-size:14.5px;}
}
@media (max-width:991.98px){
  .nav-main,.nav-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:72px 0;}
  .split-uneven{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:none;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:40px 28px;}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px;}
  .section{padding:56px 0;}
  .hero-cat{min-height:auto;}
  .hero-cat::after{display:none;}
  .hero-cat .wrap{padding-top:44px;padding-bottom:44px;}
  .compare-scroll{display:none;}
  .tier-cards{display:flex;}
  .spec-list{padding:4px 20px;}
  .spec-list .row-item{grid-template-columns:1fr;gap:8px;padding:18px 0;}
  .related-grid{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:1fr;}
  .stat-item{border-right:none;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:none;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band .inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .brand-text strong{font-size:15.5px;}
  .hero-title{font-size:26px;}
  .sec-title{font-size:23px;}
  .cover-card .body{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg-0:#070B16;
  --bg-1:#0C1424;
  --bg-2:#111C31;
  --brand:#2E7BFF;
  --brand-2:#19D3C5;
  --accent:#FFB648;
  --text-1:#EDF2FA;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(140,170,220,.14);
  --line-strong:rgba(46,123,255,.35);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --shadow:0 10px 30px rgba(4,10,24,.45);
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Inter","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;

  --bs-body-bg:#070B16;
  --bs-body-color:#EDF2FA;
  --bs-border-color:rgba(140,170,220,.14);
  --bs-primary:#2E7BFF;
  --bs-link-color:#2E7BFF;
  --bs-link-hover-color:#19D3C5;
  --bs-font-sans-serif:var(--font-cn);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-2);}
a:focus-visible,
button:focus-visible,
input:focus-visible,
.btn:focus-visible{
  outline:2px solid var(--brand-2);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--text-1);}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
hr{border:0;border-top:1px solid var(--line);}
::selection{background:rgba(46,123,255,.35);color:#fff;}

.wrap{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}
@media (max-width:1399.98px){.wrap{max-width:1140px;}}
@media (max-width:575.98px){.wrap{padding:0 16px;}}

/* ============ Header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(18,28,48,.55);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease, box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,22,.94);
  box-shadow:0 8px 24px rgba(4,10,24,.55);
}
.header-inner{display:flex;align-items:center;gap:28px;height:76px;transition:height .3s ease;}
.site-header.is-scrolled .header-inner{height:64px;}

.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);
  border-radius:10px;
  transform:rotate(45deg);
  transition:border-color .25s ease, box-shadow .25s ease;
}
.brand-mark i{
  width:12px;height:12px;border-radius:3px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:block;
}
.brand:hover .brand-mark{border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(25,211,197,.1);}
.brand-text{display:flex;flex-direction:column;line-height:1.12;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.22em;}

.nav-main{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-main a{
  position:relative;
  display:inline-block;
  padding:8px 2px;
  font-size:15px;
  color:var(--text-2);
  text-decoration:none;
  transition:color .2s ease;
}
.nav-main a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-main a:hover{color:var(--text-1);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.is-active{color:var(--text-1);}
.nav-main a.is-active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  width:44px;height:44px;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:5px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:12px;
  cursor:pointer;
  transition:border-color .2s ease;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text-1);transition:background .2s ease;}
.nav-toggle:hover{border-color:var(--line-strong);}
.nav-toggle:hover span{background:var(--brand-2);}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 26px;
  font-size:15px;
  font-weight:600;
  font-family:var(--font-cn);
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:transform .2s ease, box-shadow .25s ease, filter .2s ease, background .25s ease, color .2s ease, border-color .2s ease;
}
.btn-brand{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#06121F;
  box-shadow:0 6px 18px rgba(46,123,255,.22);
}
.btn-brand:hover{
  color:#06121F;
  filter:brightness(1.08);
  box-shadow:0 0 24px rgba(46,123,255,.35);
  transform:translateY(-2px);
}
.btn-brand:active{transform:translateY(1px);box-shadow:none;}
.btn-accent{
  background:var(--accent);
  color:#1A1200;
  box-shadow:0 6px 18px rgba(255,182,72,.2);
}
.btn-accent:hover{
  color:#1A1200;
  filter:brightness(1.08);
  box-shadow:0 0 24px rgba(255,182,72,.34);
  transform:translateY(-2px);
}
.btn-accent:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--brand);
}
.btn-ghost:hover{
  background:rgba(46,123,255,.12);
  color:var(--brand-2);
  border-color:var(--brand-2);
}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px;}

/* ============ Offcanvas drawer ============ */
.nav-drawer{
  background:var(--bg-1);
  border-left:1px solid var(--line);
  width:min(320px,86vw);
  color:var(--text-1);
}
.nav-drawer .offcanvas-header{
  padding:20px 20px 12px;
  border-bottom:1px solid var(--line);
  align-items:center;
}
.nav-drawer .offcanvas-body{padding:12px 20px 20px;display:flex;flex-direction:column;}
.drawer-link{
  display:block;
  font-size:17px;
  line-height:56px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  text-decoration:none;
}
.drawer-link:last-of-type{border-bottom:0;}
.drawer-link.is-active{color:var(--brand-2);font-weight:600;}
.drawer-link:hover{color:var(--text-1);}
.drawer-close{
  width:44px;height:44px;
  display:grid;place-items:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--text-1);
  font-size:20px;
  line-height:1;
  cursor:pointer;
}
.drawer-close:hover{border-color:var(--line-strong);color:var(--brand-2);}
.drawer-foot{margin-top:auto;padding-top:20px;}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  min-height:340px;
  display:flex;
  align-items:center;
  padding:56px 0;
  background-image:linear-gradient(90deg,rgba(7,11,22,.95) 0%,rgba(7,11,22,.78) 52%,rgba(7,11,22,.5) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(140,170,220,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,220,.06) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
  pointer-events:none;
}
.cat-hero .wrap{position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  margin-bottom:18px;
  font-size:13px;
  color:var(--brand-2);
  border:1px solid rgba(25,211,197,.32);
  border-radius:999px;
  background:rgba(25,211,197,.07);
}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.2;
  letter-spacing:-.01em;
  max-width:820px;
}
.cat-hero h1 span{
  background:linear-gradient(100deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin-top:16px;
  max-width:760px;
  font-size:16px;
  color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  font-size:13px;
  color:var(--text-2);
  background:rgba(18,28,48,.55);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:999px;
}
.chip i{color:var(--brand-2);font-size:12px;}

/* ============ Breadcrumb ============ */
.breadcrumb-bar{background:var(--bg-1);border-bottom:1px solid var(--line);padding:14px 0;}
.breadcrumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb-bar li{display:flex;align-items:center;gap:8px;}
.breadcrumb-bar li+li::before{content:"›";color:var(--text-3);}
.breadcrumb-bar a{color:var(--text-2);}
.breadcrumb-bar a:hover{color:var(--brand-2);}
.breadcrumb-bar li[aria-current] {color:var(--text-1);}

/* ============ Sections ============ */
.section{padding:96px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:800px;margin-bottom:48px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-block;
  margin-bottom:14px;
  font-size:13px;
  letter-spacing:.18em;
  color:var(--brand-2);
  text-transform:uppercase;
}

/* ============ 等级总览：不等等宽双列 ============ */
.grid-asym{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:stretch;}
.rank-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.rank-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.rank-card .thumb{position:relative;overflow:hidden;}
.rank-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease;}
.rank-card:hover .thumb img{transform:scale(1.04);}
.rank-card .thumb::after{content:"";position:absolute;inset:0;background:rgba(7,11,22,.08);}
.rank-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.rank-body h3{font-size:20px;line-height:1.4;}
.rank-body p{color:var(--text-2);font-size:15px;max-width:46ch;}
.rank-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:8px;}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  font-size:13px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--text-2);
  background:rgba(46,123,255,.06);
}
.pill-accent{
  color:var(--accent);
  border-color:rgba(255,182,72,.34);
  background:rgba(255,182,72,.08);
}
.pill-teal{
  color:var(--brand-2);
  border-color:rgba(25,211,197,.3);
  background:rgba(25,211,197,.07);
}
.rank-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.rank-mini{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px;
  background:linear-gradient(150deg,rgba(18,28,48,.72),rgba(12,20,36,.9));
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.rank-mini:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.rank-mini h3{font-size:18px;}
.rank-mini p{color:var(--text-2);font-size:14px;}
.rank-mini .level-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  align-self:flex-start;
  padding:3px 10px;
  font-size:12px;
  font-weight:600;
  border-radius:999px;
  color:var(--accent);
  border:1px solid rgba(255,182,72,.34);
  background:rgba(255,182,72,.08);
}
.rank-mini .level-badge.is-brand{
  color:var(--brand-2);
  border-color:rgba(25,211,197,.3);
  background:rgba(25,211,197,.08);
}

/* ============ 权益小卡 4 列 ============ */
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.benefit-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px;
  background:var(--bg-0);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.benefit-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.benefit-card i{
  font-size:20px;
  color:var(--brand-2);
  margin-bottom:4px;
}
.benefit-card h3{font-size:17px;transition:color .25s ease;}
.benefit-card:hover h3{color:var(--brand);}
.benefit-card p{font-size:14px;color:var(--text-2);}
.benefit-card .pill{align-self:flex-start;margin-top:auto;}

/* ============ 数字条 ============ */
.stat-strip{padding:56px 0;background:var(--bg-0);border-bottom:1px solid var(--line);}
.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));}
.stat{
  padding:8px 24px;
  border-left:1px solid var(--line);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat b{
  display:block;
  font-family:var(--font-num);
  font-size:clamp(28px,3.2vw,40px);
  font-weight:700;
  line-height:1.1;
  color:var(--accent);
  letter-spacing:-.01em;
}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--text-2);}

/* ============ 图文网格 ============ */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.feature-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.feature-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.feature-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.feature-card .f-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.feature-card h3{font-size:19px;}
.feature-card p{font-size:15px;color:var(--text-2);}
.feature-card .f-foot{margin-top:auto;padding-top:10px;display:flex;flex-wrap:wrap;gap:8px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.faq-acc{
  --bs-accordion-bg:transparent;
  --bs-accordion-border-color:var(--line);
  --bs-accordion-btn-color:var(--text-1);
  --bs-accordion-active-color:var(--brand-2);
  --bs-accordion-active-bg:transparent;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-btn-icon:none;
  --bs-accordion-btn-active-icon:none;
}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--line);}
.faq-acc .accordion-header{background:transparent;}
.faq-acc .accordion-button{
  position:relative;
  background:transparent;
  color:var(--text-1);
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  padding:22px 48px 22px 4px;
  border-radius:0;
  box-shadow:none;
}
.faq-acc .accordion-button:not(.collapsed){background:transparent;color:var(--brand-2);box-shadow:none;}
.faq-acc .accordion-button::after{
  content:"";
  position:absolute;
  right:10px;
  top:50%;
  width:14px;
  height:14px;
  transform:translateY(-50%);
  background-image:linear-gradient(currentColor,currentColor),linear-gradient(currentColor,currentColor);
  background-size:14px 1.6px,1.6px 14px;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:transform .25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  transform:translateY(-50%) rotate(180deg);
  background-size:14px 1.6px,0 0;
}
.faq-acc .accordion-body{
  background:var(--bg-2);
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
  padding:20px;
  border-radius:0 0 var(--r-btn) var(--r-btn);
}

/* ============ CTA ============ */
.cta-block{
  position:relative;
  padding:64px 40px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-panel);
  background-color:rgba(46,123,255,.08);
  background-image:linear-gradient(rgba(140,170,220,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,220,.07) 1px,transparent 1px);
  background-size:48px 48px;
  overflow:hidden;
  text-align:center;
}
.cta-block h2{font-size:clamp(22px,2.6vw,32px);}
.cta-block p{margin-top:14px;color:var(--text-2);}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:28px;}
.cta-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;}
.cta-note{margin-top:18px;font-size:13px;color:var(--text-3);}

/* ============ Footer ============ */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-text strong{font-size:17px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col p{font-size:14px;color:var(--text-2);margin-bottom:10px;max-width:36ch;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--brand);}
.footer-contact span{display:block;font-size:14px;color:var(--text-2);margin-bottom:10px;}
.footer-contact b{color:var(--text-1);font-weight:600;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  align-items:center;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ============ Responsive ============ */
@media (max-width:1199.98px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-contact{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .grid-asym{grid-template-columns:1fr;}
  .rank-side{grid-template-rows:auto auto;}
  .header-inner{height:68px;gap:16px;}
  .cat-hero{min-height:300px;padding:48px 0;}
  .cat-hero::before{display:none;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 0;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .cta-block{padding:48px 24px;}
}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .grid-2{grid-template-columns:1fr;}
  .section-head{margin-bottom:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .footer-about{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .grid-4{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .stat{padding:0 0 0 16px;}
  .stat b{font-size:30px;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-text em{letter-spacing:.14em;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    transition:none !important;
    animation:none !important;
    scroll-behavior:auto !important;
  }
  .rank-card:hover,.rank-mini:hover,.benefit-card:hover,.feature-card:hover{transform:none;}
  .btn-brand:hover,.btn-accent:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --bg-0:#070B16;
  --bg-1:#0C1424;
  --bg-2:#111C31;
  --brand:#2E7BFF;
  --brand-2:#19D3C5;
  --accent:#FFB648;
  --text-1:#EDF2FA;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(140,170,220,.14);
  --line-strong:rgba(46,123,255,.35);
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:12px;
  --shadow:0 10px 30px rgba(4,10,24,.45);
  --wrap:1320px;

  --bs-body-bg:#070B16;
  --bs-body-color:#EDF2FA;
  --bs-border-color:rgba(140,170,220,.14);
  --bs-primary:#2E7BFF;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-2);}
h1,h2,h3,h4{margin:0;color:var(--text-1);letter-spacing:-.01em;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(18,28,48,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(9,14,26,.9);
  border-bottom-color:rgba(140,170,220,.22);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,rgba(46,123,255,.9),rgba(25,211,197,.85));
  position:relative;
}
.brand-mark i{
  width:14px;height:14px;
  background:#06121F;
  transform:rotate(45deg);
  border-radius:3px;
  display:block;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em;}
.brand-text em{
  font-style:normal;
  font-size:11px;
  letter-spacing:.32em;
  color:var(--text-3);
}
.nav-main{
  display:flex;
  align-items:center;
  gap:30px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-main a{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-main a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.nav-main a:hover{color:var(--text-1);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.is-active{color:var(--text-1);font-weight:600;}
.nav-main a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

.btn-brand,.btn-accent,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  padding:12px 22px;
  min-height:44px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease,color .2s ease;
}
.btn-brand{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121F;
  padding:14px 28px;
  font-weight:700;
}
.btn-brand:hover{
  color:#04121F;
  filter:brightness(1.08);
  box-shadow:0 0 24px rgba(46,123,255,.35);
  transform:translateY(-2px);
}
.btn-brand:active{transform:translateY(-1px);}
.btn-accent{
  background:var(--accent);
  color:#1B1206;
  font-weight:700;
}
.btn-accent:hover{
  color:#1B1206;
  filter:brightness(1.06);
  box-shadow:0 0 22px rgba(255,182,72,.38);
  transform:translateY(-2px);
}
.btn-accent:active{transform:translateY(-1px);}
.btn-ghost{
  background:transparent;
  border-color:rgba(46,123,255,.55);
  color:#9CC7FF;
}
.btn-ghost:hover{
  background:rgba(46,123,255,.12);
  color:#CFE3FF;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(17,28,49,.7);
  color:var(--text-1);
  font-size:17px;
}
.nav-toggle:hover{border-color:var(--line-strong);}

/* 移动端抽屉 */
.offcanvas.mobile-drawer{
  background:var(--bg-1);
  color:var(--text-1);
  border-left:1px solid var(--line);
  width:min(340px,88vw);
}
.mobile-drawer .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:18px 22px;
}
.mobile-drawer .drawer-title{font-size:16px;font-weight:700;}
.mobile-drawer .btn-close{
  filter:invert(1) grayscale(1) brightness(1.6);
  opacity:.85;
}
.mobile-drawer .offcanvas-body{padding:12px 0 24px;display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;
  align-items:center;
  font-size:17px;
  line-height:56px;
  padding:0 22px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--text-1);font-weight:600;}
.drawer-nav a.is-active::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand-2);
  margin-right:12px;
}
.drawer-cta{margin-top:auto;padding:20px 22px 0;}
.drawer-cta .btn-accent{width:100%;}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;
  min-height:320px;
  max-height:340px;
  display:flex;
  align-items:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:
    linear-gradient(180deg,rgba(7,11,22,.72),rgba(7,11,22,.88)),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.page-hero-inner{position:relative;z-index:2;padding:56px 0 52px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--brand-2);
  border:1px solid rgba(25,211,197,.3);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:16px;
}
.page-hero h1{
  font-size:clamp(28px,3.4vw,42px);
  line-height:1.2;
  font-weight:700;
  max-width:900px;
}
.page-hero .hero-sub{
  color:var(--text-2);
  font-size:16px;
  max-width:760px;
  margin:14px 0 0;
}

/* 面包屑 */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--bg-1);}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:14px;
  color:var(--text-3);
  padding:14px 0;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand-2);}
.crumb .sep{color:var(--text-3);}
.crumb .current{color:var(--text-1);}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--bg-1);}
.section-head{margin-bottom:40px;max-width:820px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  font-weight:700;
}
.section-head p{color:var(--text-2);margin:14px 0 0;}
.section-tag{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--brand-2);
  margin-bottom:10px;
}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* 数据条 */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat{
  padding:32px 24px;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:0;}
.stat-num{
  display:block;
  font-size:clamp(28px,3vw,40px);
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.stat-label{
  display:block;
  margin-top:10px;
  font-size:14px;
  color:var(--text-2);
}

/* 时间线 */
.timeline{position:relative;max-width:900px;}
.timeline::before{
  content:"";
  position:absolute;
  left:15px;top:10px;bottom:10px;
  width:1px;
  background:linear-gradient(180deg,rgba(46,123,255,.7),rgba(25,211,197,.35),rgba(140,170,220,.06));
}
.tl-item{position:relative;padding:0 0 40px 64px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;
  left:0;top:0;
  width:32px;height:32px;
  border-radius:50%;
  background:var(--bg-1);
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  font-size:13px;
  font-weight:700;
  color:var(--brand-2);
  font-variant-numeric:tabular-nums;
}
.tl-item h3{font-size:20px;line-height:1.4;}
.tl-item p{color:var(--text-2);margin:10px 0 14px;max-width:800px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:13px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 12px;
  background:rgba(17,28,49,.6);
}
.tag.is-brand{color:var(--brand-2);border-color:rgba(25,211,197,.3);}

/* 内容卡片 */
.content-card{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  height:100%;
  display:flex;
  flex-direction:column;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.section-alt .content-card{background:var(--bg-2);}
.content-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow);
}
.content-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,rgba(46,123,255,.25),rgba(25,211,197,.12));
}
.content-card .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.content-card:hover .thumb img{transform:scale(1.04);}
.content-card .thumb::after{
  content:"";
  position:absolute;inset:0;
  background:rgba(7,11,22,.16);
}
.content-card .card-body{
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1 1 auto;
}
.content-card h3{font-size:20px;line-height:1.4;}
.content-card p{color:var(--text-2);font-size:15px;margin:0;}
.card-link{
  margin-top:auto;
  font-size:14px;
  color:var(--brand-2);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.card-link i{font-size:12px;}

/* 小信息卡 */
.mini-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  height:100%;
  transition:border-color .22s ease,transform .22s ease;
}
.section-alt .mini-card{background:var(--bg-1);}
.mini-card:hover{border-color:var(--line-strong);transform:translateY(-4px);}
.mini-card h4{font-size:17px;margin-bottom:10px;}
.mini-card p{color:var(--text-2);font-size:15px;margin:0;}
.icon-badge{
  width:38px;height:38px;
  border-radius:11px;
  display:grid;place-items:center;
  background:rgba(46,123,255,.14);
  color:var(--brand-2);
  font-size:16px;
  margin-bottom:16px;
}

/* 表格 */
.table-scroll{
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  overflow-x:auto;
  background:var(--bg-1);
  -webkit-overflow-scrolling:touch;
}
.table-hint{
  font-size:13px;
  color:var(--text-3);
  margin:12px 0 0;
  display:flex;
  align-items:center;
  gap:8px;
}
.data-table{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:15px;
}
.data-table th,.data-table td{
  padding:18px 22px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.data-table thead th{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-3);
  font-weight:600;
  background:rgba(17,28,49,.7);
  position:sticky;
  top:0;
  z-index:2;
}
.data-table tbody tr:hover{background:rgba(46,123,255,.06);}
.data-table tbody tr:last-child td{border-bottom:0;}
.data-table td:first-child{
  color:var(--text-1);
  font-weight:600;
  white-space:nowrap;
}
.data-table td{color:var(--text-2);}
.data-table a{color:var(--brand-2);}

/* 引用与要点 */
.quote-block{
  background:var(--bg-2);
  border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;
  padding:22px 26px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}
.check-list li{
  display:flex;
  gap:12px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
  font-size:15px;
}
.check-list li:last-child{border-bottom:0;}
.check-list i{color:var(--brand-2);margin-top:5px;font-size:14px;}
.check-list strong{color:var(--text-1);font-weight:600;}

/* FAQ */
.accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
}
.accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  padding:20px 0;
  display:flex;
  align-items:center;
  gap:16px;
  box-shadow:none;
  width:100%;
}
.accordion-button:not(.collapsed){color:var(--text-1);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{display:none;}
.acc-icon{
  position:relative;
  flex:0 0 22px;
  width:22px;height:22px;
  border:1px solid rgba(46,123,255,.4);
  border-radius:50%;
  margin-left:auto;
}
.acc-icon::before,.acc-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--brand-2);
  transform:translate(-50%,-50%);
  transition:transform .25s ease,opacity .25s ease;
}
.acc-icon::before{width:9px;height:1.5px;}
.acc-icon::after{width:1.5px;height:9px;}
.accordion-button:not(.collapsed) .acc-icon::after{
  opacity:0;
  transform:translate(-50%,-50%) rotate(90deg);
}
.accordion-body{
  background:var(--bg-2);
  border-radius:12px;
  padding:20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  margin-bottom:20px;
}

/* CTA */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-panel);
  border:1px solid var(--line-strong);
  background:
    linear-gradient(135deg,rgba(46,123,255,.14),rgba(25,211,197,.08)),
    var(--bg-1);
  padding:56px 48px;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(140,170,220,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,170,220,.07) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
.cta-band p{color:var(--text-2);margin:14px 0 26px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;}
.text-link{color:var(--brand-2);font-size:15px;}
.text-link:hover{text-decoration:underline;}

/* 页脚 */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:9px;}
.footer-brand .brand-mark i{width:12px;height:12px;}
.footer-brand .brand-text strong{font-size:16px;}
.footer-about p{color:var(--text-3);font-size:14px;line-height:1.8;margin:0 0 12px;max-width:360px;}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
  color:var(--text-1);
}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{color:var(--text-3);font-size:14px;}
.footer-col ul a:hover{color:var(--brand-2);}
.footer-contact span{
  display:block;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:12px;
}
.footer-contact b{color:var(--text-2);font-weight:500;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  .wrap{max-width:1140px;}
}
@media (max-width:1199.98px){
  .nav-main{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-inner{justify-content:space-between;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .stat{border-bottom:1px solid var(--line);}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:44px 32px;}
  .header-actions .btn-ghost{display:none;}
  .page-hero{min-height:300px;}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px;}
  .section{padding:56px 0;}
  .header-inner{height:64px;}
  .site-header.is-scrolled .header-inner{height:58px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10px;letter-spacing:.24em;}
  .header-actions .btn-accent{padding:10px 16px;font-size:14px;}
  .page-hero{min-height:280px;max-height:none;}
  .page-hero-inner{padding:40px 0 38px;}
  .page-hero .hero-sub{font-size:15px;}
  .stat-row{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding:24px 0;}
  .stat:last-child{border-bottom:0;}
  .tl-item{padding-left:52px;}
  .tl-item h3{font-size:18px;}
  .content-card .card-body{padding:20px;}
  .mini-card{padding:20px;}
  .cta-band{padding:32px 22px;border-radius:var(--radius-card);}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn-brand{width:100%;}
  .cta-actions .text-link{text-align:center;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px;}
  .footer-bottom{flex-direction:column;}
  .accordion-button{font-size:16px;padding:18px 0;}
  .btn-brand,.btn-accent,.btn-ghost{width:100%;}
  .header-actions .btn-accent{width:auto;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}