/* roulang page: index */
:root{
  --bg-base:#0A0912;
  --bg-block:#12101C;
  --bg-card:#1A1726;
  --bg-elev:#22203A;
  --brand:#C4F82A;
  --brand-600:#A8D81C;
  --brand-soft:rgba(196,248,42,.14);
  --accent:#6C4CF1;
  --hot:#FF4D8D;
  --line:#2A2638;
  --line-neon:rgba(196,248,42,.38);
  --tx-1:#F2F0F7;
  --tx-2:#A8A3B8;
  --tx-3:#6E6880;
  --ok:#46D39A;
  --warn:#FFB020;
  --err:#FF5A5A;
  --link:#C4F82A;
  --r-card:16px;
  --r-float:20px;
  --r-btn:10px;
  --sh-card:0 1px 0 var(--line) inset,0 12px 32px rgba(0,0,0,.45);
  --sh-glow:0 0 26px rgba(196,248,42,.22);
  --mono:"Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--tx-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--link);text-decoration:none;transition:color .22s ease}
a:hover{color:#DBFF63}
a:visited{color:#B0DE26}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;color:var(--tx-1);letter-spacing:.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:var(--brand-soft);color:var(--tx-1)}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.bg-block{background:var(--bg-block);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,9,18,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5);background:rgba(10,9,18,.94)}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent 2%,rgba(196,248,42,.42) 50%,transparent 98%);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--tx-1);flex-shrink:0}
.brand:hover,.brand:visited{color:var(--tx-1)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;flex:0 0 36px;
  border:1.5px solid var(--line-neon);
  background:radial-gradient(circle at 30% 20%,rgba(196,248,42,.22),transparent 72%);
  box-shadow:0 0 14px rgba(196,248,42,.16);
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:var(--brand);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand-text{white-space:nowrap}
.brand-text em{font-style:normal;color:var(--brand);font-size:15px;font-weight:600;margin-left:5px}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-item-link{
  position:relative;display:inline-block;padding:9px 13px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--tx-2);white-space:nowrap;
}
.nav-item-link:visited{color:var(--tx-2)}
.nav-item-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:3px;height:2px;border-radius:2px;
  background:var(--brand);transition:left .22s ease,right .22s ease;
}
.nav-item-link:hover{color:var(--tx-1)}
.nav-item-link.active{color:var(--brand)}
.nav-item-link.active:visited{color:var(--brand)}
.nav-item-link.active::after{left:13px;right:13px;box-shadow:0 0 12px var(--brand)}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  width:40px;height:40px;border-radius:10px;background:transparent;border:1px solid var(--line);
  display:grid;place-items:center;cursor:pointer;transition:border-color .22s ease,box-shadow .22s ease;
}
.nav-toggle:hover{border-color:var(--line-neon);box-shadow:0 0 14px rgba(196,248,42,.16)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--tx-1);border-radius:2px;margin:3px 0}
.offcanvas{background:var(--bg-block);color:var(--tx-1);border-left:1px solid var(--line)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas .btn-close{filter:invert(1) sepia(1) saturate(6) hue-rotate(38deg);opacity:.9}
.mobile-nav-link{
  display:block;padding:14px 4px;font-size:16px;color:var(--tx-2);border-bottom:1px solid var(--line);
}
.mobile-nav-link:hover{color:var(--brand)}
.mobile-nav-link.active{color:var(--brand)}

/* ============ 按钮 ============ */
.btn{
  font-weight:600;font-size:15px;border-radius:999px;padding:13px 26px;border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.3;
}
.btn:focus,.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:none}
.btn-brand{background:var(--brand);color:#0A0912}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-600);color:#0A0912;box-shadow:0 0 22px rgba(196,248,42,.35)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--tx-1)}
.btn-ghost:hover,.btn-ghost:focus{background:transparent;border-color:var(--line-neon);color:var(--brand);box-shadow:0 0 18px rgba(196,248,42,.16)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:16px 34px;font-size:16px}
.link-arrow{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;font-size:14px}
.link-arrow svg{transition:transform .22s ease;width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2.2}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ 徽章 / 标签 ============ */
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;border:1px solid transparent;
}
.chip-brand{background:var(--brand-soft);color:var(--brand);border-color:rgba(196,248,42,.32)}
.chip-accent{background:rgba(108,76,241,.16);color:#B9A8FF;border-color:rgba(108,76,241,.38)}
.chip-hot{background:rgba(255,77,141,.16);color:#FF86B3;border-color:rgba(255,77,141,.4)}
.chip-mute{background:rgba(255,255,255,.04);color:var(--tx-2);border-color:var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  letter-spacing:.12em;color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand);opacity:.7}

/* ============ 标题体系 ============ */
.h1{font-size:clamp(30px,4.6vw,54px);line-height:1.18;font-weight:800}
.h2{font-size:clamp(22px,2.6vw,34px);line-height:1.28;font-weight:700}
.h3{font-size:20px;line-height:1.4;font-weight:600}
.h4{font-size:17px;font-weight:600}
.sec-head{margin-bottom:40px}
.sec-head .h2{position:relative;padding-left:16px;margin-top:12px}
.sec-head .h2::before{
  content:"";position:absolute;left:0;top:.18em;width:4px;height:20px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 14px rgba(196,248,42,.55);
}
.sec-head p{color:var(--tx-2);max-width:720px;margin-top:14px;font-size:15px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.55;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(128deg,#0A0912 4%,rgba(10,9,18,.72) 46%,rgba(10,9,18,.34) 100%);
}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;min-height:600px;padding:72px 0}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;width:100%}
.hero-title{margin:20px 0 18px;max-width:16em}
.hero-sub{color:var(--tx-2);font-size:17px;max-width:34em;line-height:1.85}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:44px;flex-wrap:wrap}
.stat-num{font-family:var(--mono);font-size:clamp(30px,3.4vw,44px);font-weight:800;color:var(--brand);line-height:1;letter-spacing:.01em}
.stat-label{font-size:12px;color:var(--tx-3);margin-top:8px;letter-spacing:.06em}
.hero-visual{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card)}
.hero-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,9,18,0) 45%,rgba(10,9,18,.78) 100%);
}
.hero-visual-tag{
  position:absolute;left:16px;bottom:16px;z-index:3;display:flex;gap:8px;flex-wrap:wrap;
}

/* ============ 信任条 ============ */
.trust-bar{border-bottom:1px solid var(--line);background:var(--bg-base)}
.trust-list{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:26px 0}
.trust-item{
  display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:12px;
  border:1px solid var(--line);font-size:14px;color:var(--tx-2);background:transparent;
}
.trust-item svg{width:17px;height:17px;stroke:var(--brand);fill:none;stroke-width:2;flex:0 0 17px}
.trust-item span{color:var(--tx-1);font-weight:500}

/* ============ 权益矩阵 ============ */
.tier-wrap{position:relative}
.tier-table{
  width:100%;border-collapse:separate;border-spacing:0;table-layout:fixed;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.tier-table th,.tier-table td{padding:14px 20px;text-align:center;font-size:15px;height:52px}
.tier-table thead th{
  background:var(--bg-elev);font-size:14px;font-weight:600;color:var(--tx-2);
  letter-spacing:.04em;border-bottom:1px solid var(--line);white-space:nowrap;
}
.tier-table thead th:first-child,.tier-table td:first-child{text-align:left;color:var(--tx-1);font-weight:500}
.tier-table tbody td{border-bottom:1px solid var(--line);color:var(--tx-2)}
.tier-table tbody tr:last-child td{border-bottom:none}
.tier-table tbody tr:hover td{background:rgba(255,255,255,.018)}
.tier-table .vip{
  background:rgba(196,248,42,.06);
  border-left:1px solid var(--line-neon);border-right:1px solid var(--line-neon);
}
.tier-table thead th.vip{color:var(--brand);border-top:1px solid var(--line-neon)}
.tier-table tbody tr:last-child td.vip{border-bottom:1px solid var(--line-neon)}
.vip-head{display:inline-flex;align-items:center;gap:8px;justify-content:center}
.mark-yes{color:var(--brand);font-weight:700}
.mark-no{color:var(--tx-3)}
.tier-note{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:20px;padding:16px 20px;border:1px solid var(--line);border-radius:14px;background:var(--bg-block);
}
.tier-note p{font-size:13px;color:var(--tx-3);margin:0}
.tier-cards{display:grid;gap:16px}
.tier-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-card);padding:22px;
  box-shadow:var(--sh-card);
}
.tier-card.recommend{border-color:var(--line-neon);box-shadow:var(--sh-card),0 0 20px rgba(196,248,42,.14)}
.tier-card h4{display:flex;align-items:center;justify-content:space-between;font-size:17px;margin-bottom:14px}
.tier-card ul{list-style:none;margin:0;padding:0}
.tier-card li{
  display:flex;gap:10px;font-size:14px;color:var(--tx-2);padding:9px 0;border-bottom:1px dashed var(--line);
}
.tier-card li:last-child{border-bottom:none}
.tier-card li svg{width:15px;height:15px;stroke:var(--brand);fill:none;stroke-width:2.4;flex:0 0 15px;margin-top:5px}
.tier-card li.off{color:var(--tx-3)}
.tier-card li.off svg{stroke:var(--tx-3)}

/* ============ 等级阶梯 ============ */
.steps{position:relative}
.step-row{display:flex;gap:24px;margin-bottom:22px}
.step-axis{display:flex;flex-direction:column;align-items:center;flex:0 0 26px;width:26px}
.step-dot{
  width:14px;height:14px;border-radius:50%;background:var(--brand);margin-top:26px;flex:0 0 14px;
  box-shadow:0 0 14px rgba(196,248,42,.8);
}
.step-line{flex:1;width:2px;background:linear-gradient(180deg,var(--line-neon),rgba(42,38,56,.2));margin-top:10px}
.step-row:last-child .step-line{display:none}
.step-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-card);
  padding:26px 28px;box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--sh-card),var(--sh-glow)}
.step-w-92{width:92%}
.step-w-96{width:96%}
.step-w-100{width:100%}
.step-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.step-head .h3{font-size:19px}
.step-desc{font-size:14px;color:var(--tx-2);margin-bottom:14px}
.step-points{display:flex;gap:10px;flex-wrap:wrap}
.step-points span{
  font-size:13px;color:var(--tx-2);padding:6px 12px;border-radius:8px;
  background:rgba(255,255,255,.035);border:1px solid var(--line);
}
.step-glow{border-color:var(--line-neon);background:linear-gradient(180deg,rgba(196,248,42,.05),var(--bg-card) 40%)}

/* ============ 专属内容网格 ============ */
.content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.content-card{
  position:relative;display:block;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--bg-card);box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.content-card:hover,.content-card:visited{color:var(--tx-1)}
.content-card:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--sh-card),var(--sh-glow)}
.content-card img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.content-card:hover img{transform:scale(1.03)}
.content-card.feature{grid-column:span 2;grid-row:span 2;min-height:420px}
.content-card.small{min-height:212px}
.card-overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;padding:20px;
  background:linear-gradient(180deg,rgba(10,9,18,.05) 26%,rgba(10,9,18,.9) 100%);
}
.card-overlay .badges{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.card-overlay h3{font-size:17px;font-weight:600;line-height:1.45}
.content-card.feature .card-overlay h3{font-size:22px}
.card-meta{font-size:12px;color:var(--tx-3);margin-top:8px;font-family:var(--mono);letter-spacing:.03em}

/* ============ 最新信息列表 ============ */
.news-list{border-top:1px solid var(--line)}
.news-row{
  position:relative;display:grid;grid-template-columns:120px 1fr auto;gap:22px;align-items:center;
  padding:18px 18px 18px 16px;border-bottom:1px solid var(--line);color:var(--tx-1);
  transition:background .22s ease;text-decoration:none;
}
.news-row:visited{color:var(--tx-1)}
.news-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--brand);
  opacity:0;transition:opacity .22s ease;
}
.news-row:hover{background:rgba(255,255,255,.025);color:var(--tx-1)}
.news-row:hover::before{opacity:1}
.news-thumb{width:96px;height:72px;border-radius:10px;overflow:hidden;border:1px solid var(--line);display:block}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{display:block;min-width:0}
.news-title{
  display:block;font-size:17px;font-weight:600;color:var(--tx-1);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.news-sum{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14px;color:var(--tx-2);margin-top:6px;line-height:1.7;
}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:10px;font-size:12px;color:var(--tx-3);font-family:var(--mono)}
.news-arrow{font-size:14px;color:var(--brand);font-weight:600;white-space:nowrap}
.empty-state{
  text-align:center;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--bg-block);
}
.empty-state svg{width:44px;height:44px;stroke:var(--tx-3);fill:none;stroke-width:1.6;margin-bottom:16px}
.empty-state p{color:var(--tx-2);font-size:15px;margin-bottom:14px}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion-item{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  display:flex;align-items:center;gap:16px;width:100%;padding:20px 22px;font-size:16px;font-weight:600;
  color:var(--tx-1);background:transparent;border:none;box-shadow:none;line-height:1.6;text-align:left;
}
.accordion-button:not(.collapsed){color:var(--brand);background:rgba(196,248,42,.045);box-shadow:none}
.accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--brand);outline-offset:-2px}
.accordion-button::after{display:none}
.accordion-button::before{
  content:"+";order:2;margin-left:auto;font-size:24px;font-weight:400;color:var(--brand);
  line-height:1;transition:transform .22s ease;flex:0 0 auto;
}
.accordion-button:not(.collapsed)::before{content:"−";transform:rotate(180deg)}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:var(--line-neon)}
.accordion-body{padding:0 22px 22px 38px;font-size:15px;line-height:1.85;color:var(--tx-2)}

/* ============ CTA 条幅 ============ */
.cta-banner{
  position:relative;overflow:hidden;border:1px solid var(--line-neon);border-radius:var(--r-float);
  background:var(--bg-block);padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-banner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(118deg,rgba(196,248,42,.18),rgba(108,76,241,.2));
  opacity:.85;
}
.cta-banner>*{position:relative;z-index:2}
.cta-banner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3}
.cta-banner p{color:var(--tx-2);font-size:15px;margin:12px 0 0;max-width:40em}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:#08070F;border-top:1px solid var(--line);margin-top:0}
.footer-top{padding:64px 0 40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px}
.footer-brand strong{font-size:18px;font-weight:800}
.footer-brand strong em{font-style:normal;color:var(--brand);font-size:14px;font-weight:600;margin-left:5px}
.footer-desc{font-size:14px;color:var(--tx-2);line-height:1.85;max-width:34em}
.footer-col h4{font-size:14px;font-weight:600;color:var(--brand);margin-bottom:18px;letter-spacing:.04em}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--tx-2)}
.footer-col a:hover{color:var(--brand)}
.footer-contact{font-size:14px;color:var(--tx-2);line-height:1.9}
.footer-socials{display:flex;gap:10px;margin-top:18px}
.footer-socials a{
  width:36px;height:36px;border-radius:10px;background:var(--bg-elev);border:1px solid var(--line);
  display:grid;place-items:center;transition:border-color .22s ease,box-shadow .22s ease;
}
.footer-socials a:hover{border-color:var(--line-neon);box-shadow:0 0 16px rgba(196,248,42,.2)}
.footer-socials svg{width:16px;height:16px;stroke:var(--tx-2);fill:none;stroke-width:1.8}
.footer-socials a:hover svg{stroke:var(--brand)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--tx-3)}
.footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom nav a{font-size:13px;color:var(--tx-3)}
.footer-bottom nav a:hover{color:var(--tx-2)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-grid{gap:36px}
  .content-grid{grid-template-columns:repeat(2,1fr)}
  .content-card.feature{grid-column:span 2;grid-row:span 1;min-height:320px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-item-link{padding:9px 10px;font-size:14px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .hero-inner{min-height:auto;padding:56px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-title{max-width:none}
  .trust-list{grid-template-columns:repeat(2,1fr)}
  .step-w-92,.step-w-96,.step-w-100{width:100%}
  .cta-banner{padding:36px 30px}
}
@media (max-width:767px){
  body{font-size:15px}
  .container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .nav-wrap{gap:12px;height:60px}
  .site-header .brand-text{font-size:17px}
  .brand-text em{font-size:13px}
  .hero-stats{gap:26px}
  .content-grid{grid-template-columns:1fr}
  .content-card.feature{grid-column:span 1;min-height:260px}
  .content-card.small{min-height:200px}
  .news-row{grid-template-columns:88px 1fr;gap:14px;padding:16px 12px}
  .news-thumb{width:88px;height:66px}
  .news-arrow{display:none}
  .news-title{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-top{padding:48px 0 32px}
  .cta-banner{padding:28px 22px;border-radius:16px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .tier-note{flex-direction:column;align-items:flex-start}
  .accordion-body{padding-left:22px}
  .step-row{gap:14px}
}
@media (max-width:519px){
  .h1{font-size:28px}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:20px}
  .trust-list{grid-template-columns:1fr}
  .tier-table th,.tier-table td{padding:12px 12px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg-base:#0A0912;
  --bg-block:#12101C;
  --bg-card:#1A1726;
  --bg-elev:#22203A;
  --brand:#C4F82A;
  --brand-600:#A8D81C;
  --brand-soft:rgba(196,248,42,.14);
  --accent:#6C4CF1;
  --accent-soft:rgba(108,76,241,.16);
  --hot:#FF4D8D;
  --line:#2A2638;
  --line-neon:rgba(196,248,42,.38);
  --tx-1:#F2F0F7;
  --tx-2:#A8A3B8;
  --tx-3:#6E6880;
  --ok:#46D39A;
  --warn:#FFB020;
  --err:#FF5A5A;
  --link:#C4F82A;
  --radius-card:16px;
  --radius-elev:20px;
  --radius-btn:10px;
  --shadow-card:0 1px 0 var(--line) inset, 0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 1px 0 var(--line-neon) inset, 0 14px 34px rgba(0,0,0,.55), 0 0 26px rgba(196,248,42,.22);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--tx-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--link);text-decoration:none;transition:color .22s ease,text-underline-offset .22s ease}
a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:4px}
a:focus-visible,button:focus-visible,input:focus-visible,.accordion-button:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;
}
h1,h2,h3,h4{margin:0;color:var(--tx-1);font-weight:700;letter-spacing:.01em}
p{margin:0 0 1.1em;color:var(--tx-2);text-align:left}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{max-width:1200px;padding-left:18px;padding-right:18px;margin:0 auto}
@media(min-width:992px){.container{padding-left:24px;padding-right:24px}}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,9,18,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5)}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(196,248,42,.55),transparent);
  opacity:.6;pointer-events:none;
}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
@media(max-width:991px){.header-inner{height:60px}}
.brand{display:flex;align-items:center;gap:10px;color:var(--tx-1);font-weight:700}
.brand:hover{color:var(--tx-1);text-decoration:none}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;
  border:1.5px solid var(--line-neon);border-radius:10px;
  background:linear-gradient(140deg,rgba(196,248,42,.16),rgba(108,76,241,.18));
  box-shadow:0 0 16px rgba(196,248,42,.18);
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:var(--brand);stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
.brand-mark svg path:first-child{fill:var(--brand);stroke:none}
.brand-text{font-size:17px;line-height:1.2;display:flex;flex-direction:column}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--brand);letter-spacing:.16em}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-item-link{
  position:relative;padding:8px 12px;font-size:15px;font-weight:500;
  color:var(--tx-2);border-radius:8px;
}
.nav-item-link:hover{color:var(--tx-1);text-decoration:none}
.nav-item-link.active{color:var(--brand)}
.nav-item-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);
  transition:transform .22s ease;box-shadow:0 0 12px var(--brand);
}
.nav-item-link:hover::after{transform:scaleX(1)}
.nav-item-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.btn{font-family:var(--font-cn);font-weight:600;border:1px solid transparent;border-radius:var(--radius-btn);padding:12px 22px;font-size:15px;transition:all .22s ease;line-height:1.2}
.btn:focus,.btn:focus-visible{box-shadow:none;outline:2px solid var(--brand);outline-offset:2px}
.btn-brand{background:var(--brand);color:#0A0912;border-radius:999px;padding:13px 26px;box-shadow:0 0 18px rgba(196,248,42,.28)}
.btn-brand:hover{background:var(--brand-600);color:#0A0912;filter:brightness(1.06);box-shadow:0 0 26px rgba(196,248,42,.4);text-decoration:none}
.btn-ghost{background:transparent;color:var(--tx-1);border:1px solid var(--line)}
.btn-ghost:hover{color:var(--brand);border-color:var(--line-neon);text-decoration:none;box-shadow:0 0 18px rgba(196,248,42,.16)}
.btn-quiet{background:transparent;border:1px solid var(--line);color:var(--tx-2)}
.btn-quiet:hover{color:var(--tx-1);border-color:var(--line-neon);text-decoration:none}
.nav-toggle{
  width:42px;height:42px;display:grid;place-items:center;background:transparent;
  border:1px solid var(--line);border-radius:10px;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--brand);stroke-width:2;fill:none;stroke-linecap:round}
.offcanvas.dark-panel{background:var(--bg-block);color:var(--tx-1);border-right:1px solid var(--line)}
.dark-panel .offcanvas-header{border-bottom:1px solid var(--line)}
.dark-panel .btn-close{filter:invert(1) sepia(1) saturate(6) hue-rotate(40deg)}
.dark-panel .nav-link{color:var(--tx-2);font-size:16px;padding:12px 4px;border-bottom:1px solid var(--line)}
.dark-panel .nav-link.active{color:var(--brand)}

/* ---------- 文章头部 ---------- */
.page-hero{
  position:relative;padding:40px 0 0;
  background-image:linear-gradient(180deg,rgba(10,9,18,.72) 0%,rgba(10,9,18,.94) 68%,var(--bg-base) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.breadcrumb-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:20px}
.breadcrumb-line a{color:var(--tx-3)}
.breadcrumb-line a:hover{color:var(--brand)}
.breadcrumb-line .sep{color:var(--line)}
.breadcrumb-line .current{color:var(--brand);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom}
@media(max-width:767px){.breadcrumb-line .current{white-space:normal}}
.tag-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:var(--accent-soft);color:#B8A6FF;border:1px solid rgba(108,76,241,.5);
}
.article-title{
  font-size:clamp(26px,3.6vw,46px);line-height:1.24;font-weight:800;
  margin:18px 0 16px;color:var(--tx-1);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--tx-3);padding-bottom:22px;border-bottom:1px solid var(--line);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta .dot{color:var(--line)}
.article-meta .num{font-family:var(--font-num);color:var(--tx-2)}

/* ---------- 正文 ---------- */
.article-section{padding:48px 0 56px}
@media(min-width:992px){.article-section{padding:64px 0 80px}}
.article-layout{max-width:780px;margin:0 auto}
.article-lead{font-size:17px;color:var(--tx-2);line-height:1.85;margin-bottom:28px}
.article-body{font-size:16px;line-height:1.85;color:var(--tx-2)}
@media(min-width:992px){.article-body{font-size:17px}}
.article-body h2{
  position:relative;font-size:clamp(21px,2.4vw,28px);line-height:1.35;font-weight:700;
  color:var(--tx-1);margin:2.2em 0 .9em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:20px;
  background:var(--brand);border-radius:3px;box-shadow:0 0 14px rgba(196,248,42,.5);
}
.article-body h3{
  font-size:19px;font-weight:600;color:var(--tx-1);margin:1.9em 0 .7em;
  padding-left:14px;border-left:2px solid var(--line-neon);
}
.article-body h4{font-size:17px;font-weight:600;color:var(--tx-1);margin:1.6em 0 .6em}
.article-body p{margin:0 0 1.15em;color:var(--tx-2)}
.article-body strong{color:var(--tx-1)}
.article-body a{border-bottom:1px solid rgba(196,248,42,.4)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.3em}
.article-body ul{list-style:none}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:.5em;color:var(--tx-2)}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(196,248,42,.45);
}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:.5em;padding-left:4px;color:var(--tx-2)}
.article-body ol li::marker{color:var(--brand);font-family:var(--font-num);font-weight:700}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;background:var(--bg-block);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--tx-2);
}
.article-body blockquote p{color:var(--tx-2);margin:0}
.article-body img{border-radius:12px;margin:1.6em 0;border:1px solid var(--line);width:100%;height:auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--tx-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;display:block;overflow-x:auto;border:1px solid var(--line);border-radius:12px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.article-body th{background:var(--bg-elev);color:var(--tx-1);font-weight:600}
.article-body td{color:var(--tx-2)}
.article-body tr:last-child td{border-bottom:none}
.article-body code{
  font-family:var(--font-num);font-size:14px;background:var(--bg-elev);
  padding:2px 7px;border-radius:6px;color:var(--brand);
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0}

.empty-state{
  text-align:center;padding:56px 24px;background:var(--bg-card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.empty-state svg{width:46px;height:46px;margin:0 auto 18px;stroke:var(--brand);fill:none;stroke-width:1.6}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--tx-2);margin-bottom:20px}

.convert-inline{
  margin:36px 0;padding:26px;border:1px solid var(--line-neon);border-radius:var(--radius-card);
  background:linear-gradient(120deg,rgba(196,248,42,.10),rgba(108,76,241,.14)),var(--bg-block);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.convert-inline h3{font-size:19px;margin-bottom:6px}
.convert-inline p{margin:0;font-size:14px;color:var(--tx-2)}
.convert-inline .actions{display:flex;gap:12px;flex-wrap:wrap}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;padding:26px 0 0;margin-top:34px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:500;color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(196,248,42,.36);transition:all .22s ease;
}
.tag:hover{background:rgba(196,248,42,.2);text-decoration:none;color:var(--brand);box-shadow:0 0 16px rgba(196,248,42,.22)}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.sec-title{position:relative;padding-left:16px;font-size:clamp(20px,2.2vw,26px);line-height:1.3}
.sec-title::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:18px;background:var(--brand);border-radius:3px;box-shadow:0 0 14px rgba(196,248,42,.5)}
.sec-more{font-size:14px;font-weight:600;white-space:nowrap}
.sec-more:hover{text-decoration:none}

.related{padding:0 0 64px}
.related-list{border-top:1px solid var(--line)}
.related-item{
  display:flex;gap:16px;align-items:center;padding:16px 12px;border-bottom:1px solid var(--line);
  position:relative;transition:background .22s ease;
}
.related-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;background:var(--brand);
  transform:scaleY(0);transform-origin:center;transition:transform .22s ease;
}
.related-item:hover{background:rgba(255,255,255,.025);text-decoration:none}
.related-item:hover::before{transform:scaleY(1)}
.related-thumb{width:96px;height:72px;flex:0 0 96px;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.related-thumb img{width:100%;height:100%;object-fit:cover}
.related-body h3{font-size:16px;font-weight:600;color:var(--tx-1);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.related-body p{font-size:13px;color:var(--tx-2);margin:0 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-body .meta{font-size:12px;color:var(--tx-3);display:flex;gap:12px;flex-wrap:wrap}
.related-body .meta .num{font-family:var(--font-num)}
.related-item .arrow{margin-left:auto;color:var(--brand);font-size:14px;font-weight:600;white-space:nowrap}
.back-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;padding:28px 0 0}

/* ---------- CTA 条幅 ---------- */
.cta-band{padding:0 0 96px}
.cta-box{
  position:relative;overflow:hidden;border-radius:var(--radius-elev);
  border:1px solid var(--line-neon);background:var(--bg-block);
  padding:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-box::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(115deg,rgba(196,248,42,.16),rgba(108,76,241,.18) 55%,transparent 85%);
}
.cta-box>*{position:relative;z-index:1}
.cta-box h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:10px}
.cta-box p{margin:0;font-size:15px;color:var(--tx-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-block);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media(max-width:575px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:32px;height:32px;flex:0 0 32px}
.footer-brand strong{font-size:16px;display:flex;flex-direction:column;line-height:1.3}
.footer-brand em{font-style:normal;font-size:11px;color:var(--brand);letter-spacing:.14em;font-weight:500}
.footer-desc{font-size:14px;color:var(--tx-2);line-height:1.85;max-width:34ch}
.footer-socials{display:flex;gap:10px;margin-top:18px}
.footer-socials a{
  width:36px;height:36px;display:grid;place-items:center;border-radius:10px;
  background:var(--bg-elev);border:1px solid var(--line);transition:all .22s ease;
}
.footer-socials a svg{width:18px;height:18px;fill:none;stroke:var(--tx-2);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.footer-socials a:hover{border-color:var(--line-neon);box-shadow:0 0 18px rgba(196,248,42,.2)}
.footer-socials a:hover svg{stroke:var(--brand)}
.footer-col h4{font-size:14px;font-weight:600;color:var(--brand);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--tx-2)}
.footer-col ul a:hover{color:var(--brand);text-decoration:none}
.footer-contact{font-size:14px;color:var(--tx-2);line-height:2}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--tx-3)}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom nav a{font-size:13px;color:var(--tx-3)}
.footer-bottom nav a:hover{color:var(--brand);text-decoration:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}
@media(max-width:575px){
  .cta-box{padding:28px 22px}
  .btn{width:100%;text-align:center}
  .cta-actions,.convert-inline .actions{width:100%}
  .convert-inline{flex-direction:column;align-items:flex-start}
  .related-item{flex-wrap:wrap}
  .related-item .arrow{margin-left:0}
}

/* roulang page: category1 */
:root{
  --bg-base:#0A0912;
  --bg-block:#12101C;
  --bg-card:#1A1726;
  --bg-elev:#22203A;
  --brand:#C4F82A;
  --brand-600:#A8D81C;
  --brand-soft:rgba(196,248,42,.14);
  --accent:#6C4CF1;
  --hot:#FF4D8D;
  --line:#2A2638;
  --line-neon:rgba(196,248,42,.38);
  --tx-1:#F2F0F7;
  --tx-2:#A8A3B8;
  --tx-3:#6E6880;
  --ok:#46D39A;
  --warn:#FFB020;
  --err:#FF5A5A;
  --link:#C4F82A;
  --link-visited:#A8D81C;
  --r-card:16px;
  --r-elev:20px;
  --r-btn:10px;
  --r-img:12px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shadow-card:0 1px 0 var(--line) inset,0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 1px 0 var(--line) inset,0 12px 32px rgba(0,0,0,.45),0 0 26px rgba(196,248,42,.22);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--tx-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
svg{display:block;}
a{color:var(--link);text-decoration:none;transition:color .22s ease;}
a:visited{color:var(--link-visited);}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;color:var(--tx-1);font-weight:700;}
p{margin:0 0 1.1em;text-align:left;}
ul{margin:0;padding:0;list-style:none;}
hr{border:0;border-top:1px solid var(--line);}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,9,18,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(196,248,42,.35),transparent);
  pointer-events:none;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  display:grid;place-items:center;
  border:1px solid var(--line-neon);
  background:var(--brand-soft);
  color:var(--brand);
}
.brand-mark svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linejoin:round;}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.01em;color:var(--tx-1);display:flex;align-items:center;gap:8px;}
.brand-text em{
  font-style:normal;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(196,248,42,.25);
  padding:2px 8px;border-radius:999px;
}
.nav-main{display:flex;align-items:center;gap:4px;}
.nav-item-link{
  position:relative;display:inline-block;
  padding:8px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--tx-2);
  transition:color .22s ease,background .22s ease;
}
.nav-item-link:visited{color:var(--tx-2);}
.nav-item-link:hover{color:var(--tx-1);background:rgba(255,255,255,.035);text-decoration:none;}
.nav-item-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
  box-shadow:0 0 12px var(--brand);
  transition:left .22s ease,right .22s ease;
}
.nav-item-link.active{color:var(--brand);}
.nav-item-link.active:hover{color:var(--brand);}
.nav-item-link.active::after{left:14px;right:14px;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  width:44px;height:40px;border:1px solid var(--line);border-radius:10px;
  background:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  cursor:pointer;transition:border-color .22s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--tx-1);border-radius:2px;}
.nav-toggle:hover{border-color:var(--line-neon);}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-focus-box-shadow:none;
  border-radius:999px;
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  padding:14px 26px;
  border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.btn:hover{text-decoration:none;}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#0A0912;}
.btn-brand:visited{color:#0A0912;}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-600);border-color:var(--brand-600);color:#0A0912;box-shadow:0 0 26px rgba(196,248,42,.35);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--tx-1);}
.btn-ghost:visited{color:var(--tx-1);}
.btn-ghost:hover,.btn-ghost:focus{background:transparent;border-color:var(--line-neon);color:var(--brand);box-shadow:0 0 20px rgba(196,248,42,.18);}
.btn-sm-cta{padding:10px 20px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;}
.link-arrow:visited{color:var(--brand);}
.link-arrow:hover{text-decoration:none;color:var(--brand-600);}
.link-arrow:hover svg{transform:translateX(3px);}
.link-arrow svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s ease;}

/* ---------- 徽章 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(196,248,42,.28);
  padding:5px 12px;border-radius:999px;
}
.badge-accent{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;
  color:#BFB2FF;background:rgba(108,76,241,.16);
  border:1px solid rgba(108,76,241,.45);
  padding:3px 10px;border-radius:6px;
}
.badge-hot{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;
  color:#FFC2D8;background:rgba(255,77,141,.16);
  border:1px solid rgba(255,77,141,.45);
  padding:3px 10px;border-radius:6px;
}
.badge-mute{
  display:inline-flex;align-items:center;
  font-size:12px;color:var(--tx-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  padding:3px 10px;border-radius:6px;
}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:24px;}
.crumb a{color:var(--tx-3);}
.crumb a:hover{color:var(--brand);text-decoration:none;}
.crumb .sep{color:var(--tx-3);opacity:.6;}
.crumb .cur{color:var(--brand);font-weight:600;}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;
  padding:48px 0 72px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(115deg,#0A0912 22%,rgba(10,9,18,.55) 62%,rgba(10,9,18,.35) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover,cover;
  background-position:center,center;
  background-repeat:no-repeat,no-repeat;
}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 78% 22%,rgba(108,76,241,.28),transparent 58%);
  pointer-events:none;
}
.hero-cat .container{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-copy h1{
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.01em;
  margin:18px 0 16px;
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--tx-2);max-width:36em;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  padding-top:24px;border-top:1px solid var(--line);
}
.stat-num{font-family:var(--font-num);font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1;color:var(--brand);letter-spacing:.01em;}
.stat-label{font-size:12px;color:var(--tx-3);margin-top:8px;}
.hero-media{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:0 18px 44px rgba(0,0,0,.55);}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(10,9,18,0) 45%,rgba(10,9,18,.72) 100%);
  pointer-events:none;
}
.hero-media .media-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  display:flex;gap:8px;flex-wrap:wrap;
}

/* ---------- 锚点条 ---------- */
.anchor-strip{background:var(--bg-base);border-bottom:1px solid var(--line);}
.anchor-bar{display:flex;flex-wrap:wrap;gap:10px;padding:18px 0;}
.anchor-pill{
  display:inline-block;padding:8px 18px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--tx-2);
  background:var(--bg-block);border:1px solid var(--line);
  transition:color .22s ease,border-color .22s ease,background .22s ease;
}
.anchor-pill:visited{color:var(--tx-2);}
.anchor-pill:hover{color:var(--tx-1);border-color:var(--line-neon);text-decoration:none;}
.anchor-pill.active{background:var(--brand);border-color:var(--brand);color:#0A0912;font-weight:600;}
.anchor-pill.active:visited{color:#0A0912;}

/* ---------- 区块通用 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-block);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section[id]{scroll-margin-top:88px;}
.sec-label{
  display:block;font-size:12px;font-weight:700;
  letter-spacing:.12em;color:var(--brand);
  margin-bottom:12px;
}
.sec-title{
  position:relative;padding-left:16px;
  font-size:clamp(22px,2.6vw,34px);line-height:1.28;font-weight:700;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:20px;
  border-radius:2px;background:var(--brand);
  box-shadow:0 0 12px rgba(196,248,42,.55);
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.sec-lead{font-size:15px;color:var(--tx-2);max-width:52ch;margin:14px 0 0;}

/* ---------- 非对称卡片栅格 ---------- */
.grid-feature{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card-feature{
  grid-column:span 2;grid-row:span 2;
  display:flex;flex-direction:column;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card-feature:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--shadow-hover);}
.card-feature .thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);}
.card-feature .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease;}
.card-feature:hover .thumb img{transform:scale(1.03);}
.card-feature .feat-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-feature h3{font-size:20px;line-height:1.4;}
.card-feature p{font-size:14px;color:var(--tx-2);line-height:1.8;margin:0;}
.feat-list{display:flex;flex-direction:column;gap:10px;margin-top:4px;}
.feat-list li{position:relative;padding-left:20px;font-size:14px;color:var(--tx-2);}
.feat-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;
  background:var(--brand-soft);border:1px solid var(--brand);
}
.card-feature .card-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}

.card-mini{
  display:flex;flex-direction:column;gap:12px;
  padding:16px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card-mini:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--shadow-hover);}
.card-mini .thumb{aspect-ratio:16/9;overflow:hidden;border-radius:var(--r-img);border:1px solid var(--line);}
.card-mini .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease;}
.card-mini:hover .thumb img{transform:scale(1.03);}
.card-mini h3{font-size:17px;line-height:1.45;}
.card-mini p{font-size:13.5px;color:var(--tx-2);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-mini .meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  font-size:12px;color:var(--tx-3);
}

/* ---------- 场景列表 ---------- */
.scene-list{border-top:1px solid var(--line);}
.scene-item{
  display:grid;grid-template-columns:56px 220px 1fr;gap:24px;align-items:center;
  padding:24px 20px;
  border-bottom:1px solid var(--line);
  transition:background .22s ease,box-shadow .22s ease;
}
.scene-item:hover{background:rgba(196,248,42,.04);box-shadow:inset 2px 0 0 var(--brand);}
.scene-icon{
  width:56px;height:56px;border-radius:14px;
  display:grid;place-items:center;
  background:var(--bg-elev);border:1px solid var(--line);color:var(--brand);
}
.scene-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.scene-item h3{font-size:17px;line-height:1.5;}
.scene-item .scene-tier{display:block;font-size:12px;color:var(--tx-3);font-weight:500;margin-top:6px;}
.scene-item p{font-size:14px;color:var(--tx-2);margin:0;}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.flow-item{
  position:relative;
  padding:28px 22px 24px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.flow-item:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--shadow-hover);}
.flow-num{
  font-family:var(--font-num);font-size:14px;font-weight:700;
  color:#0A0912;background:var(--brand);
  width:30px;height:30px;border-radius:9px;
  display:grid;place-items:center;margin-bottom:18px;
  box-shadow:0 0 18px rgba(196,248,42,.35);
}
.flow-item h3{font-size:17px;line-height:1.45;margin-bottom:10px;}
.flow-item p{font-size:13.5px;color:var(--tx-2);line-height:1.75;margin:0;}
.flow-line{
  position:absolute;top:42px;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-neon),transparent);
  z-index:0;
}

/* ---------- FAQ ---------- */
.accordion{--bs-accordion-border-width:0;--bs-accordion-bg:transparent;}
.accordion-item{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:var(--line-neon);
  box-shadow:0 0 24px rgba(196,248,42,.12);
}
.accordion-header{margin:0;}
.accordion-button{
  display:flex;align-items:center;gap:16px;
  background:transparent;
  color:var(--tx-1);
  font-family:var(--font-sans);
  font-size:16px;font-weight:600;
  line-height:1.6;
  padding:20px 22px;
  box-shadow:none;
  border-radius:0;
}
.accordion-button:not(.collapsed){color:var(--brand);background:rgba(196,248,42,.05);}
.accordion-button:focus{border-color:transparent;box-shadow:none;outline:2px solid var(--brand);outline-offset:-4px;}
.accordion-button::after{display:none;}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;margin-left:auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.accordion-button:not(.collapsed) .faq-icon::after{transform:scaleY(0);opacity:0;}
.accordion-body{
  padding:0 22px 22px 38px;
  font-size:15px;line-height:1.85;color:var(--tx-2);
}

/* ---------- CTA 条幅 ---------- */
.cta-wrap{padding:72px 0 88px;}
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:44px;
  border-radius:var(--r-elev);
  border:1px solid var(--line-neon);
  background:linear-gradient(115deg,rgba(196,248,42,.16),rgba(108,76,241,.18) 48%,rgba(10,9,18,0) 100%),var(--bg-block);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.35),transparent 68%);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{font-size:clamp(20px,2.3vw,28px);line-height:1.35;margin-bottom:10px;}
.cta-band p{font-size:14.5px;color:var(--tx-2);margin:0;}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-block);border-top:1px solid var(--line);}
.footer-top{padding:72px 0 48px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand strong{font-size:18px;font-weight:800;color:var(--tx-1);display:flex;align-items:center;gap:8px;}
.footer-brand em{
  font-style:normal;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(196,248,42,.25);
  padding:2px 8px;border-radius:999px;
}
.footer-desc{font-size:14px;line-height:1.85;color:var(--tx-2);max-width:38ch;margin-bottom:20px;}
.footer-socials{display:flex;gap:10px;}
.footer-socials a{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:var(--bg-elev);border:1px solid var(--line);color:var(--tx-2);
  transition:color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.footer-socials a:hover{color:var(--brand);border-color:var(--line-neon);box-shadow:0 0 18px rgba(196,248,42,.22);text-decoration:none;}
.footer-socials svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--brand);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--tx-2);}
.footer-col a:hover{color:var(--brand);text-decoration:none;}
.footer-contact{font-size:13.5px;line-height:1.9;color:var(--tx-2);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid var(--line);
}
.footer-bottom p{margin:0;font-size:13px;color:var(--tx-3);}
.footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom nav a{font-size:13px;color:var(--tx-3);}
.footer-bottom nav a:hover{color:var(--brand);text-decoration:none;}

/* ---------- 移动端抽屉 ---------- */
.drawer{background:var(--bg-block);color:var(--tx-1);border-left:1px solid var(--line);}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.drawer .offcanvas-body{padding:20px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line-neon);background:transparent;color:var(--brand);
  font-size:18px;line-height:1;display:grid;place-items:center;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px;}
.drawer-nav a{
  padding:13px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--tx-2);
  border:1px solid transparent;
}
.drawer-nav a:hover{color:var(--tx-1);background:rgba(255,255,255,.04);text-decoration:none;}
.drawer-nav a.active{color:var(--brand);background:var(--brand-soft);border-color:rgba(196,248,42,.28);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-grid{gap:36px;}
  .scene-item{grid-template-columns:56px 180px 1fr;gap:20px;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .hero-cat{padding:40px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media{order:2;}
  .hero-media img{aspect-ratio:16/9;}
  .grid-feature{grid-template-columns:repeat(2,1fr);}
  .card-feature{grid-column:span 2;grid-row:auto;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .flow-line{display:none;}
  .scene-item{grid-template-columns:56px 1fr;grid-template-areas:"icon title" "text text";}
  .scene-item .scene-icon{grid-area:icon;}
  .scene-item .scene-copy{grid-area:title;}
  .scene-item p{grid-area:text;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px;}
  .section{padding:56px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .grid-feature{grid-template-columns:1fr;gap:18px;}
  .card-feature{grid-column:span 1;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:16px;}
  .flow{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .accordion-body{padding-left:24px;}
  .cta-wrap{padding:56px 0 64px;}
}
@media (max-width:575.98px){
  body{font-size:15px;}
  .section{padding:48px 0;}
  .hero-cat{padding:32px 0 48px;}
  .hero-copy h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;text-align:center;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;gap:12px;}
  .cta-actions .btn{width:100%;text-align:center;}
  .cta-actions .link-arrow{justify-content:center;}
  .brand-text{font-size:16px;}
  .brand-text em{display:none;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition:none!important;animation:none!important;}
  .card-mini:hover,.card-feature:hover,.flow-item:hover{transform:none;}
  .card-mini:hover .thumb img,.card-feature:hover .thumb img{transform:none;}
}

/* roulang page: category2 */
:root{
  --bg-base:#0A0912;
  --bg-block:#12101C;
  --bg-card:#1A1726;
  --bg-elev:#22203A;
  --brand:#C4F82A;
  --brand-600:#A8D81C;
  --brand-soft:rgba(196,248,42,.14);
  --accent:#6C4CF1;
  --accent-soft:rgba(108,76,241,.16);
  --hot:#FF4D8D;
  --hot-soft:rgba(255,77,141,.14);
  --line:#2A2638;
  --line-neon:rgba(196,248,42,.38);
  --tx-1:#F2F0F7;
  --tx-2:#A8A3B8;
  --tx-3:#6E6880;
  --ok:#46D39A;
  --warn:#FFB020;
  --err:#FF5A5A;
  --link:#C4F82A;
  --r-card:16px;
  --r-elev:20px;
  --r-btn:10px;
  --shadow-card:0 1px 0 var(--line) inset, 0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 1px 0 var(--line-neon) inset, 0 16px 40px rgba(0,0,0,.55), 0 0 26px rgba(196,248,42,.22);
  --num:"Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  text-align:left;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:var(--link);text-decoration:none;transition:color .22s ease,border-color .22s ease,opacity .22s ease}
a:visited{color:#A8D81C}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
h1,h2,h3,h4,h5{margin:0;color:var(--tx-1);font-weight:700;letter-spacing:.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
section[id],div[id]{scroll-margin-top:104px}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,9,18,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--tx-1);flex:0 0 auto}
.brand:hover{text-decoration:none;color:var(--tx-1)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:var(--brand-soft);border:1px solid var(--line-neon);
  box-shadow:0 0 16px rgba(196,248,42,.18);
}
.brand-mark svg{width:19px;height:19px;fill:var(--brand);stroke:none}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;line-height:1.2;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--brand);font-size:12px;font-weight:600;display:block;letter-spacing:.18em}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-item-link{
  position:relative;color:var(--tx-2);font-size:15px;font-weight:500;padding:6px 2px;white-space:nowrap;
}
.nav-item-link:hover{color:var(--tx-1);text-decoration:none}
.nav-item-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:2px;background:var(--brand);
  box-shadow:0 0 12px var(--brand);transition:width .22s ease,left .22s ease;
}
.nav-item-link.active{color:var(--brand)}
.nav-item-link.active::after{left:0;width:100%}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.header-neon{
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(196,248,42,.34),rgba(108,76,241,.34),transparent);
}
.nav-toggle{
  margin-left:auto;width:42px;height:42px;border-radius:11px;background:var(--bg-card);
  border:1px solid var(--line);display:grid;place-items:center;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px}

/* ============ buttons ============ */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#0A0912;font-weight:700;font-size:15px;line-height:1;
  padding:15px 26px;border:none;border-radius:999px;cursor:pointer;
  transition:background .22s ease,box-shadow .22s ease,transform .22s ease;
}
.btn-brand:visited{color:#0A0912}
.btn-brand:hover{background:var(--brand-600);color:#0A0912;text-decoration:none;box-shadow:0 0 26px rgba(196,248,42,.4);transform:translateY(-2px)}
.btn-brand:active{transform:translateY(0);box-shadow:0 0 14px rgba(196,248,42,.3)}
.btn-brand.sm{padding:11px 20px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--tx-1);font-weight:600;font-size:15px;line-height:1;
  padding:14px 24px;border:1px solid var(--line);border-radius:999px;cursor:pointer;
  transition:border-color .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.btn-ghost:visited{color:var(--tx-1)}
.btn-ghost:hover{border-color:var(--line-neon);color:var(--brand);text-decoration:none;box-shadow:0 0 20px rgba(196,248,42,.16);transform:translateY(-2px)}
.btn-outline-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;border:1px solid var(--line-neon);color:var(--brand);
  font-weight:600;font-size:15px;padding:14px 24px;border-radius:10px;cursor:pointer;
  transition:background .22s ease,box-shadow .22s ease,transform .22s ease;
}
.btn-outline-neon:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;box-shadow:0 0 20px rgba(196,248,42,.22);transform:translateY(-2px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px}
.link-arrow span{transition:transform .22s ease}
.link-arrow:hover{text-decoration:none}
.link-arrow:hover span{transform:translateX(3px)}

/* ============ badges ============ */
.badge-cat{
  display:inline-flex;align-items:center;background:var(--accent-soft);color:#B9A9FF;
  border:1px solid rgba(108,76,241,.42);border-radius:6px;font-size:12px;font-weight:600;
  padding:3px 9px;letter-spacing:.02em;
}
.badge-brand{
  display:inline-flex;align-items:center;background:var(--brand-soft);color:var(--brand);
  border:1px solid var(--line-neon);border-radius:999px;font-size:12px;font-weight:600;padding:4px 12px;
}
.badge-hot{
  display:inline-flex;align-items:center;background:var(--hot-soft);color:var(--hot);
  border:1px solid rgba(255,77,141,.42);border-radius:6px;font-size:12px;font-weight:600;padding:3px 9px;
}
.badge-plain{
  display:inline-flex;align-items:center;background:rgba(255,255,255,.04);color:var(--tx-2);
  border:1px solid var(--line);border-radius:999px;font-size:12px;padding:4px 11px;
}

/* ============ breadcrumb ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:22px}
.crumb a{color:var(--tx-2)}
.crumb a:hover{color:var(--brand);text-decoration:none}
.crumb .sep{color:var(--tx-3);opacity:.7}
.crumb .cur{color:var(--brand)}

/* ============ hero ============ */
.cat-hero{
  position:relative;padding:56px 0 64px;
  background-image:linear-gradient(100deg,rgba(10,9,18,.96) 0%,rgba(10,9,18,.72) 46%,rgba(10,9,18,.35) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.hero-copy h1{
  font-size:clamp(30px,4.2vw,48px);line-height:1.18;font-weight:800;margin:16px 0 18px;letter-spacing:.005em;
}
.hero-copy h1 b{color:var(--brand);font-weight:800}
.hero-lead{font-size:16px;line-height:1.85;color:var(--tx-2);max-width:640px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:36px;max-width:640px}
.hero-stat{
  background:rgba(18,16,28,.72);border:1px solid var(--line);border-radius:14px;padding:16px 16px 14px;
  backdrop-filter:blur(6px);
}
.hero-stat .num{font-family:var(--num);font-size:34px;line-height:1;font-weight:700;color:var(--brand);letter-spacing:.01em}
.hero-stat .num small{font-size:15px;margin-left:2px}
.hero-stat .cap{font-size:12px;color:var(--tx-3);margin-top:8px;line-height:1.5}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;border-radius:16px;border:1px solid var(--line);box-shadow:0 18px 48px rgba(0,0,0,.55);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:16px;
  background:linear-gradient(180deg,rgba(10,9,18,0) 45%,rgba(10,9,18,.72) 100%);
  pointer-events:none;
}
.hero-float{
  position:absolute;left:16px;bottom:16px;right:16px;z-index:2;
  display:flex;align-items:center;gap:12px;
  background:rgba(18,16,28,.86);border:1px solid var(--line-neon);border-radius:14px;padding:12px 14px;
}
.hero-float .dot{width:9px;height:9px;border-radius:50%;background:var(--brand);box-shadow:0 0 12px var(--brand);flex:0 0 auto}
.hero-float span{font-size:13px;color:var(--tx-2)}
.hero-float strong{font-family:var(--num);color:var(--brand);font-size:16px;margin-left:auto}

/* ============ anchor tabs ============ */
.anchor-tabs{
  position:sticky;top:69px;z-index:1020;
  background:rgba(10,9,18,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.anchor-tabs-inner{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-tabs-inner::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--tx-2);background:var(--bg-card);
  border:1px solid var(--line);border-radius:999px;padding:8px 16px;
  transition:all .22s ease;white-space:nowrap;
}
.chip:hover{color:var(--tx-1);border-color:var(--line-neon);text-decoration:none}
.chip.active{background:var(--brand);border-color:var(--brand);color:#0A0912;box-shadow:0 0 18px rgba(196,248,42,.3)}
.chip.active:hover{color:#0A0912}

/* ============ section heading ============ */
.sec{padding:64px 0}
.sec-head{margin-bottom:32px}
.sec-tag{
  display:block;font-size:12px;letter-spacing:.12em;color:var(--tx-3);
  text-transform:uppercase;margin-bottom:12px;
}
.sec-title{
  position:relative;font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;padding-left:18px;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.18em;width:4px;height:20px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(196,248,42,.55);
}
.sec-sub{color:var(--tx-2);font-size:15px;margin-top:12px;max-width:780px}

/* ============ metric strip ============ */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:var(--bg-block);border:1px solid var(--line);border-radius:var(--r-elev);
  overflow:hidden;margin-top:0;
}
.metric-cell{padding:22px 22px 20px;border-right:1px solid var(--line)}
.metric-cell:last-child{border-right:none}
.metric-cell .k{font-size:13px;color:var(--tx-3);margin-bottom:8px}
.metric-cell .v{font-family:var(--num);font-size:32px;line-height:1;font-weight:700;color:var(--brand)}
.metric-cell .v em{font-style:normal;font-size:14px;color:var(--tx-2);margin-left:6px}
.metric-cell .d{font-size:12px;color:var(--tx-3);margin-top:8px}

/* ============ layout grid ============ */
.layout-row{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:32px;align-items:start}
.main-col{min-width:0}
.side-col{min-width:0}
.side-sticky{position:sticky;top:136px;display:flex;flex-direction:column;gap:20px}

/* ============ module card ============ */
.module-card{
  display:grid;grid-template-columns:232px minmax(0,1fr);gap:0;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  margin-bottom:22px;
}
.module-card:last-child{margin-bottom:0}
.module-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-neon)}
.mc-media{position:relative;overflow:hidden;min-height:180px}
.mc-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.module-card:hover .mc-media img{transform:scale(1.03)}
.mc-play{
  position:absolute;left:12px;bottom:12px;width:38px;height:38px;border-radius:50%;
  background:rgba(10,9,18,.72);border:1px solid var(--line-neon);display:grid;place-items:center;
}
.mc-play svg{width:14px;height:14px;fill:var(--brand)}
.mc-body{padding:22px 24px 24px}
.mc-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.mc-meta{font-size:12px;color:var(--tx-3);font-family:var(--num);letter-spacing:.02em}
.mc-body h3{font-size:20px;font-weight:600;margin-bottom:10px;line-height:1.4}
.mc-body > p{font-size:14px;line-height:1.8;color:var(--tx-2)}
.mc-list{margin-top:14px;display:grid;gap:8px}
.mc-list li{position:relative;padding-left:18px;font-size:13.5px;color:var(--tx-2);line-height:1.7}
.mc-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 8px rgba(196,248,42,.6);
}
.mc-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.mc-foot .num-line{font-family:var(--num);font-size:13px;color:var(--tx-3)}

/* ============ side cards ============ */
.side-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 22px 20px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:16px;font-weight:600;display:flex;align-items:center;gap:8px;margin-bottom:16px}
.side-card h3::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(196,248,42,.7)}
.rank-list{display:grid;gap:2px}
.rank-item{
  display:flex;align-items:center;gap:12px;padding:11px 10px;border-radius:10px;
  transition:background .22s ease;color:var(--tx-1);
}
.rank-item:hover{background:var(--bg-elev);text-decoration:none;color:var(--tx-1)}
.rank-no{
  font-family:var(--num);font-size:15px;font-weight:700;color:var(--tx-3);width:20px;flex:0 0 20px;
}
.rank-item.top .rank-no{color:var(--hot)}
.rank-name{font-size:14px;flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--tx-1)}
.rank-val{font-family:var(--num);font-size:15px;color:var(--brand);font-weight:700}
.side-cta{
  background:linear-gradient(135deg,rgba(196,248,42,.14),rgba(108,76,241,.18)),var(--bg-block);
  border:1px solid var(--line-neon);border-radius:var(--r-card);padding:24px 22px;
}
.side-cta h3{font-size:17px;font-weight:700;margin-bottom:10px}
.side-cta p{font-size:13.5px;color:var(--tx-2);line-height:1.8;margin-bottom:16px}
.side-cta .btn-brand{width:100%;padding:14px 18px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px}
.tag-cloud a{
  font-size:13px;color:var(--tx-2);background:var(--bg-elev);border:1px solid var(--line);
  border-radius:999px;padding:6px 13px;transition:all .22s ease;
}
.tag-cloud a:hover{color:var(--brand);border-color:var(--line-neon);background:var(--brand-soft);text-decoration:none}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;position:relative}
.step{
  position:relative;background:var(--bg-block);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:0 0 24px rgba(196,248,42,.16)}
.step-no{
  font-family:var(--num);font-size:13px;font-weight:700;color:#0A0912;background:var(--brand);
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--tx-2);line-height:1.75}

/* ============ FAQ ============ */
.faq-acc .accordion-item{
  background:var(--bg-card);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  margin-bottom:12px;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:var(--line-neon);box-shadow:0 0 22px rgba(196,248,42,.14);
}
.faq-acc .accordion-button{
  background:transparent;color:var(--tx-1);font-size:16.5px;font-weight:600;
  padding:18px 22px;box-shadow:none;border-radius:14px;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:rgba(196,248,42,.05)}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq-acc .accordion-button::after{
  content:"";flex:0 0 26px;width:26px;height:26px;border-radius:8px;border:1px solid var(--line-neon);
  background-color:transparent;
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-size:12px 2px,2px 12px;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:background-size .22s ease,border-color .22s ease,transform .22s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  background-size:12px 2px,0 12px;border-color:var(--brand);transform:rotate(180deg);
}
.faq-acc .accordion-body{padding:0 22px 20px 38px;color:var(--tx-2);font-size:15px;line-height:1.85}

/* ============ CTA band ============ */
.cta-band{padding:8px 0 72px}
.cta-card{
  position:relative;overflow:hidden;border-radius:20px;border:1px solid var(--line-neon);
  background:linear-gradient(115deg,rgba(196,248,42,.16) 0%,rgba(108,76,241,.18) 55%,rgba(10,9,18,0) 100%),var(--bg-block);
  padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-card h2{font-size:clamp(20px,2.3vw,28px);font-weight:700;margin-bottom:10px;line-height:1.35}
.cta-card p{font-size:14.5px;color:var(--tx-2);max-width:620px}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}

/* ============ footer ============ */
.site-footer{background:var(--bg-block);border-top:1px solid var(--line);padding:64px 0 0;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px}
.footer-brand strong{font-size:17px;font-weight:700;color:var(--tx-1);line-height:1.3}
.footer-brand strong em{font-style:normal;color:var(--brand);font-size:12px;font-weight:600;display:block;letter-spacing:.18em}
.footer-desc{font-size:13.5px;color:var(--tx-2);line-height:1.8;max-width:360px}
.footer-socials{display:flex;gap:10px;margin-top:18px}
.footer-socials a{
  width:36px;height:36px;border-radius:10px;background:var(--bg-elev);border:1px solid var(--line);
  display:grid;place-items:center;transition:border-color .22s ease,box-shadow .22s ease;
}
.footer-socials a:hover{border-color:var(--line-neon);box-shadow:0 0 16px rgba(196,248,42,.22)}
.footer-socials svg{width:17px;height:17px;fill:none;stroke:var(--brand);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.footer-col h4{font-size:14px;font-weight:600;color:var(--brand);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14px;color:var(--tx-2)}
.footer-col ul a:hover{color:var(--brand);text-decoration:none}
.footer-contact{font-size:13.5px;color:var(--tx-2);line-height:1.9}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--tx-3);margin:0}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom nav a{font-size:13px;color:var(--tx-3)}
.footer-bottom nav a:hover{color:var(--brand);text-decoration:none}

/* ============ offcanvas ============ */
.mobile-panel{background:var(--bg-block);color:var(--tx-1);border-left:1px solid var(--line)}
.mobile-panel .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px}
.mobile-panel .offcanvas-title{font-size:15px;font-weight:700;letter-spacing:.02em}
.mobile-panel .btn-close{filter:invert(1);opacity:.75}
.mobile-panel .offcanvas-body{padding:20px 22px 28px}
.mobile-panel .m-link{
  display:block;padding:13px 14px;border-radius:11px;font-size:15px;color:var(--tx-2);
  border:1px solid transparent;margin-bottom:8px;
}
.mobile-panel .m-link:hover{background:var(--bg-card);color:var(--tx-1);text-decoration:none}
.mobile-panel .m-link.active{color:var(--brand);background:var(--brand-soft);border-color:var(--line-neon)}

/* ============ responsive ============ */
@media (max-width:1199.98px){
  .layout-row{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px}
  .hero-grid{gap:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-grid > div:last-child{grid-column:1 / -1}
}
@media (max-width:991.98px){
  .header-inner{height:60px}
  .cat-hero{padding:44px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:2}
  .layout-row{grid-template-columns:1fr;gap:32px}
  .side-sticky{position:static}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-cell:nth-child(2){border-right:none}
  .metric-cell:nth-child(1),.metric-cell:nth-child(2){border-bottom:1px solid var(--line)}
  .cta-card{padding:30px 26px}
  .anchor-tabs{top:61px}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px}
  .sec{padding:56px 0}
  .hero-stats{grid-template-columns:1fr;gap:12px}
  .hero-stat{display:flex;align-items:center;gap:14px;padding:14px 16px}
  .hero-stat .num{font-size:28px}
  .hero-stat .cap{margin-top:0}
  .module-card{grid-template-columns:1fr}
  .mc-media{min-height:0;aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid > div:last-child{grid-column:auto}
  .cta-actions{width:100%}
  .cta-actions .btn-brand{width:100%}
  .cta-actions .link-arrow{width:100%;justify-content:center;padding:6px 0}
}
@media (max-width:575.98px){
  body{font-size:15px}
  .sec{padding:48px 0}
  .hero-copy h1{font-size:28px}
  .hero-btns .btn-brand,.hero-btns .btn-ghost{width:100%}
  .steps{grid-template-columns:1fr}
  .metric-strip{grid-template-columns:1fr}
  .metric-cell{border-right:none;border-bottom:1px solid var(--line)}
  .metric-cell:last-child{border-bottom:none}
  .anchor-tabs-inner{padding:12px 0}
  .cta-card{padding:24px 20px;border-radius:16px}
  .mc-body{padding:18px 18px 20px}
  .faq-acc .accordion-body{padding-left:22px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --bg-base:#0A0912;
  --bg-block:#12101C;
  --bg-card:#1A1726;
  --bg-elev:#22203A;
  --brand:#C4F82A;
  --brand-600:#A8D81C;
  --brand-soft:rgba(196,248,42,.14);
  --accent:#6C4CF1;
  --accent-soft:rgba(108,76,241,.16);
  --hot:#FF4D8D;
  --hot-soft:rgba(255,77,141,.15);
  --line:#2A2638;
  --line-neon:rgba(196,248,42,.38);
  --tx-1:#F2F0F7;
  --tx-2:#A8A3B8;
  --tx-3:#6E6880;
  --ok:#46D39A;
  --warn:#FFB020;
  --err:#FF5A5A;
  --link:#C4F82A;
  --r-card:16px;
  --r-elev:20px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:6px;
  --shadow-card:inset 0 1px 0 var(--line), 0 12px 32px rgba(0,0,0,.45);
  --shadow-neon:inset 0 1px 0 var(--line), 0 12px 32px rgba(0,0,0,.45), 0 0 26px rgba(196,248,42,.22);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:"Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-top:68px;
  background:var(--bg-base);
  color:var(--tx-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--link);text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:visited{color:var(--brand-600)}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-soft);color:var(--brand)}
.container{max-width:1200px;padding-left:18px;padding-right:18px;margin:0 auto}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(10,9,18,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(196,248,42,.35),transparent);
  pointer-events:none;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5)}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--tx-1);font-weight:800;font-size:17px;white-space:nowrap}
.brand:hover{color:var(--tx-1);text-decoration:none}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;
  border:2px solid var(--brand);border-radius:10px;
  background:radial-gradient(circle at 30% 20%,rgba(196,248,42,.22),transparent 70%);
  box-shadow:0 0 14px rgba(196,248,42,.28);
}
.brand-mark svg{width:18px;height:18px;fill:none;stroke:var(--brand);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand-mark svg path:first-child{fill:var(--brand);stroke:none}
.brand strong{font-weight:800;letter-spacing:.01em}
.brand em{font-style:normal;color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.14em;margin-left:6px;vertical-align:2px}
.nav-main{align-items:center;gap:6px}
.nav-item-link{
  position:relative;display:inline-block;padding:10px 14px;
  font-size:15px;font-weight:500;color:var(--tx-2);
  border-radius:8px;
}
.nav-item-link::after{
  content:"";position:absolute;left:50%;bottom:2px;height:2px;width:0;
  background:var(--brand);border-radius:2px;transform:translateX(-50%);
  transition:width .22s ease;box-shadow:0 0 12px var(--brand);
}
.nav-item-link:hover{color:var(--tx-1);text-decoration:none}
.nav-item-link:hover::after,.nav-item-link.active::after{width:56%}
.nav-item-link.active{color:var(--brand)}
.nav-item-link.active::after{width:56%}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  width:42px;height:42px;display:grid;place-items:center;
  background:transparent;border:1px solid var(--line);border-radius:10px;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.nav-toggle:hover{border-color:var(--line-neon);box-shadow:0 0 16px rgba(196,248,42,.18)}
.nav-toggle svg{width:20px;height:20px;stroke:var(--tx-1);stroke-width:2;fill:none;stroke-linecap:round}
.offcanvas.offcanvas-end{background:var(--bg-block);color:var(--tx-1);border-left:1px solid var(--line);width:300px}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas-title{font-size:16px;font-weight:700}
.btn-close-custom{
  width:34px;height:34px;border:1px solid var(--line-neon);border-radius:9px;background:transparent;
  color:var(--brand);display:grid;place-items:center;line-height:1;
}
.btn-close-custom svg{width:16px;height:16px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round}
.mnav-list{display:flex;flex-direction:column;gap:6px;padding:16px 0}
.mnav-list a{
  display:block;padding:13px 14px;border-radius:10px;color:var(--tx-2);
  font-size:15px;border:1px solid transparent;transition:.22s ease;
}
.mnav-list a:hover,.mnav-list a.active{
  color:var(--brand);border-color:var(--line-neon);background:var(--brand-soft);text-decoration:none;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--r-btn);border:1px solid transparent;
  cursor:pointer;transition:all .22s ease;text-decoration:none;
}
.btn:focus,.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:none}
.btn-brand{
  background:var(--brand);color:#0A0912;border-radius:999px;
  box-shadow:0 0 0 rgba(196,248,42,0);
}
.btn-brand:hover{background:var(--brand-600);color:#0A0912;text-decoration:none;box-shadow:0 0 24px rgba(196,248,42,.45)}
.btn-ghost{
  background:transparent;color:var(--tx-1);border:1px solid var(--line);
}
.btn-ghost:hover{color:var(--brand);border-color:var(--line-neon);text-decoration:none;box-shadow:0 0 20px rgba(196,248,42,.18)}
.btn-sm{padding:10px 18px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px;
}
.link-arrow svg{width:15px;height:15px;stroke:currentColor;stroke-width:2;fill:none;transition:transform .22s ease}
.link-arrow:hover{text-decoration:none}
.link-arrow:hover svg{transform:translateX(3px)}
.btn-block{width:100%}

/* ============ 徽章 / 标签 ============ */
.badge-neon,.badge-accent,.badge-hot,.badge-data,.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;font-size:12.5px;font-weight:600;line-height:1.4;
  border-radius:var(--r-badge);white-space:nowrap;
}
.badge-neon{background:var(--brand-soft);color:var(--brand);border:1px solid rgba(196,248,42,.32)}
.badge-accent{background:var(--accent-soft);color:#A793FF;border:1px solid rgba(108,76,241,.42)}
.badge-hot{background:var(--hot-soft);color:var(--hot);border:1px solid rgba(255,77,141,.4)}
.badge-data{background:rgba(196,248,42,.1);color:var(--brand);border:1px solid rgba(196,248,42,.24);font-family:var(--font-num)}
.badge-soft{background:var(--bg-elev);color:var(--tx-2);border:1px solid var(--line)}
.pill-999{border-radius:999px}

/* ============ 面包屑 ============ */
.crumb-bar{padding:22px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;background:none;font-size:13px}
.breadcrumb li{color:var(--tx-3)}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--tx-3)}
.breadcrumb a{color:var(--tx-2)}
.breadcrumb a:hover{color:var(--brand);text-decoration:none}
.breadcrumb .current{color:var(--brand);font-weight:600}

/* ============ 内页 Hero ============ */
.page-hero{position:relative;margin-top:22px;border-radius:var(--r-elev);overflow:hidden;border:1px solid var(--line)}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(10,9,18,.94) 8%,rgba(10,9,18,.72) 48%,rgba(10,9,18,.35) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero-inner{position:relative;padding:56px 32px 52px;max-width:760px}
.hero-eyebrow{margin-bottom:18px}
.hero-title{
  font-size:clamp(30px,4.6vw,54px);line-height:1.18;font-weight:800;letter-spacing:.01em;
  margin-bottom:18px;
}
.hero-title .hl{color:var(--brand)}
.hero-lead{font-size:16px;color:var(--tx-2);line-height:1.85;max-width:640px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px}
.hero-stat .n{font-family:var(--font-num);font-size:34px;font-weight:800;line-height:1;color:var(--brand)}
.hero-stat .t{font-size:12px;color:var(--tx-3);margin-top:8px;letter-spacing:.04em}
@media (max-width:767px){
  .page-hero-inner{padding:38px 20px 34px}
  .hero-stats{gap:22px}
  .hero-stat .n{font-size:26px}
}

/* ============ 锚点胶囊条 ============ */
.anchor-bar{padding:34px 0 0}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin}
.anchor-scroll::-webkit-scrollbar{height:4px}
.anchor-scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}
.anchor-pill{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;
  color:var(--tx-2);border:1px solid var(--line);background:var(--bg-block);
  transition:all .22s ease;
}
.anchor-pill:hover{color:var(--brand);border-color:var(--line-neon);text-decoration:none}
.anchor-pill.active{background:var(--brand);color:#0A0912;border-color:var(--brand);box-shadow:0 0 18px rgba(196,248,42,.3)}

/* ============ 板块通用 ============ */
.section{padding:96px 0}
.section-tight{padding:56px 0 72px}
.section-head{margin-bottom:44px}
.kicker{
  display:block;font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--tx-3);text-transform:uppercase;margin-bottom:12px;
}
.h2-deco{
  position:relative;padding-left:18px;
  font-size:clamp(22px,2.6vw,34px);line-height:1.28;font-weight:700;
}
.h2-deco::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:20px;
  background:var(--brand);border-radius:2px;box-shadow:0 0 12px rgba(196,248,42,.5);
}
.section-sub{color:var(--tx-2);font-size:15px;line-height:1.85;margin-top:16px;max-width:760px}
.section-divider{border-top:1px solid var(--line)}

/* ============ 数据条 ============ */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  padding:28px 26px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--bg-block);box-shadow:var(--shadow-card);
}
.stats-item{border-left:1px solid var(--line);padding-left:20px}
.stats-item:first-child{border-left:none;padding-left:0}
.stats-item .n{font-family:var(--font-num);font-size:clamp(28px,3.4vw,42px);font-weight:800;line-height:1;color:var(--brand)}
.stats-item .t{font-size:13px;color:var(--tx-3);margin-top:10px}
@media (max-width:991px){.stats-strip{grid-template-columns:repeat(2,1fr);gap:24px}.stats-item:nth-child(3){border-left:none;padding-left:0}}
@media (max-width:575px){.stats-strip{grid-template-columns:1fr;padding:22px}.stats-item{border-left:none;padding-left:0;border-top:1px solid var(--line);padding-top:18px}.stats-item:first-child{border-top:none;padding-top:0}}

/* ============ 分节长页 ============ */
.long-section{padding:72px 0;border-top:1px solid var(--line)}
.long-section:first-of-type{border-top:none;padding-top:0}
.long-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px}
.long-head .section-sub{margin-top:12px}
.long-index{
  font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--brand);
  border:1px solid var(--line-neon);border-radius:999px;padding:5px 14px;background:var(--brand-soft);
}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:991px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.card-grid{grid-template-columns:1fr}}
.content-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.content-card:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--shadow-neon)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-elev)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease}
.content-card:hover .card-media img{transform:scale(1.03)}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,9,18,0) 42%,rgba(10,9,18,.72) 100%);
}
.card-badge{position:absolute;left:12px;top:12px;z-index:2}
.card-duration{
  position:absolute;right:12px;bottom:12px;z-index:2;
  font-family:var(--font-num);font-size:12px;font-weight:600;
  padding:4px 9px;border-radius:6px;background:rgba(10,9,18,.78);
  color:var(--brand);border:1px solid rgba(196,248,42,.3);
}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1;gap:10px}
.card-title{font-size:17px;font-weight:600;line-height:1.45;color:var(--tx-1)}
.content-card:hover .card-title{color:var(--brand)}
.card-desc{font-size:14px;color:var(--tx-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--tx-3);
}
.card-meta .link-arrow{font-size:13px}

/* ============ 权益提示条 ============ */
.tier-note{
  margin-top:44px;padding:26px 28px;border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(196,248,42,.07),rgba(108,76,241,.09));
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.tier-note p{margin:0;color:var(--tx-2);font-size:14.5px;max-width:720px}
.tier-note p strong{color:var(--tx-1)}
.tier-note-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px}
.accordion-item{
  background:var(--bg-card);border:1px solid var(--line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;
}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:var(--line-neon);box-shadow:0 0 22px rgba(196,248,42,.13)}
.accordion-button{
  width:100%;background:transparent;color:var(--tx-1);
  font-size:16px;font-weight:600;line-height:1.55;text-align:left;
  padding:18px 54px 18px 20px;border:none;position:relative;
}
.accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.accordion-button::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-family:var(--font-num);font-size:22px;font-weight:600;color:var(--brand);
  transition:transform .22s ease,opacity .22s ease;line-height:1;
  background:none;width:auto;height:auto;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.accordion-body{
  padding:0 54px 20px 36px;color:var(--tx-2);font-size:15px;line-height:1.85;
  border-top:1px solid var(--line);margin:0 20px 0 20px;padding-top:16px;
}

/* ============ CTA 条幅 ============ */
.cta-band{
  position:relative;border-radius:var(--r-elev);border:1px solid var(--line-neon);
  background:var(--bg-block);overflow:hidden;
  padding:44px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(118deg,rgba(196,248,42,.2) 0%,rgba(108,76,241,.2) 46%,rgba(10,9,18,0) 78%);
}
.cta-band>*{position:relative}
.cta-copy h3{font-size:clamp(20px,2.2vw,26px);line-height:1.4;margin-bottom:10px}
.cta-copy p{margin:0;color:var(--tx-2);font-size:15px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}
@media (max-width:767px){
  .cta-band{padding:30px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .cta-actions .link-arrow{width:100%;justify-content:center}
}

/* ============ 页脚 ============ */
.site-footer{margin-top:96px;background:var(--bg-block);border-top:1px solid var(--line)}
.footer-top{padding:64px 0 44px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{font-size:17px;font-weight:800}
.footer-brand em{font-style:normal;color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.14em;margin-left:6px;vertical-align:2px}
.footer-desc{font-size:14px;color:var(--tx-2);line-height:1.85;max-width:400px}
.footer-socials{display:flex;gap:10px;margin-top:20px}
.footer-socials a{
  width:36px;height:36px;display:grid;place-items:center;border-radius:10px;
  background:var(--bg-elev);border:1px solid var(--line);transition:.22s ease;
}
.footer-socials a:hover{border-color:var(--line-neon);box-shadow:0 0 16px rgba(196,248,42,.22)}
.footer-socials svg{width:17px;height:17px;fill:none;stroke:var(--tx-2);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.footer-socials a:hover svg{stroke:var(--brand)}
.footer-col h4{font-size:14px;font-weight:600;color:var(--brand);margin-bottom:18px;letter-spacing:.03em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--tx-2)}
.footer-col a:hover{color:var(--brand);text-decoration:none}
.footer-contact{font-size:14px;color:var(--tx-2);line-height:1.9}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--tx-3)}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom nav a{font-size:13px;color:var(--tx-3)}
.footer-bottom nav a:hover{color:var(--brand);text-decoration:none}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:64px}
  .footer-top{padding:44px 0 32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ============ 响应式纵向节奏 ============ */
@media (max-width:991px){
  .section{padding:72px 0}
  .long-section{padding:56px 0}
}
@media (max-width:767px){
  body{padding-top:60px;font-size:15px}
  .header-inner{height:60px}
}
@media (max-width:575px){
  .section{padding:48px 0}
  .long-section{padding:44px 0}
  .section-head{margin-bottom:32px}
  .hero-actions .btn{width:100%}
  .anchor-bar{padding-top:26px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}