/* roulang page: index */
:root{
  --brand:#21D4C2;
  --brand-2:#6C7BFF;
  --accent:#FFB020;
  --bg-0:#070B14;
  --bg-1:#0C1424;
  --glass:rgba(18,28,48,.55);
  --glass-strong:rgba(16,26,44,.82);
  --fg:#E8EEF7;
  --fg-muted:#93A3BC;
  --fg-dim:#5F7089;
  --line:rgba(120,160,200,.16);
  --line-hi:rgba(33,212,194,.35);
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-1:0 10px 30px -18px rgba(0,0,0,.9);
  --shadow-2:0 0 0 1px rgba(33,212,194,.28),0 18px 48px -20px rgba(33,212,194,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--fg);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";
  position:absolute;top:0;left:14px;right:14px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(33,212,194,.55),transparent);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;font-family:ui-monospace,Menlo,Consolas,monospace;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--line-hi)}
.section{padding:96px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.6vw,34px);margin-top:12px}
.section-head p.lead{color:var(--fg-muted);max-width:56ch;margin-top:10px;font-size:15px}
.text-link{color:var(--brand);font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:color .18s var(--ease)}
.text-link span{transition:transform .18s var(--ease)}
.text-link:hover{color:#5FF0E1;text-decoration:underline}
.text-link:hover span{transform:translateX(3px)}

/* ============ 顶部条 ============ */
.topbar{background:#04070D;border-bottom:1px solid var(--line);font-size:13px;color:var(--fg-dim)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px}
.topbar-brand{color:var(--fg-muted);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.topbar-brand b{color:var(--brand);font-weight:700}
.topbar-brand em{font-style:normal;color:var(--fg-dim)}
.topbar-links{display:flex;align-items:center;gap:18px}
.topbar-links a{transition:color .18s var(--ease)}
.topbar-links a:hover{color:var(--brand)}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(7,11,20,.72);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);transition:background .22s var(--ease),border-color .22s var(--ease)}
.site-header.is-scrolled{background:rgba(5,8,14,.94);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:70px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-2));
  color:#04131A;font-weight:800;font-size:14px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(33,212,194,.4),0 10px 26px -12px rgba(33,212,194,.75);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;letter-spacing:0}
.logo-text i{font-style:normal;font-size:11px;color:var(--fg-dim);letter-spacing:.18em;font-family:ui-monospace,Menlo,Consolas,monospace}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 15px;border-radius:10px;color:var(--fg-muted);font-size:15px;transition:color .18s var(--ease),background .18s var(--ease)}
.nav-link:hover{color:var(--fg);background:rgba(33,212,194,.08)}
.nav-link.active{color:var(--fg)}
.nav-link.active::after{content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(33,212,194,.85)}
.nav-right{display:flex;align-items:center;gap:12px}

/* Mega 面板 */
.mega{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  border-radius:var(--r-btn);border:1px solid var(--line);
  background:rgba(18,28,48,.6);color:var(--fg-muted);font-size:14px;cursor:pointer;
  transition:all .18s var(--ease);
}
.mega-trigger:hover,.mega:focus-within .mega-trigger{border-color:var(--line-hi);color:var(--fg);box-shadow:0 0 0 1px rgba(33,212,194,.22),0 12px 30px -18px rgba(33,212,194,.6)}
.chev{display:inline-block;transition:transform .22s var(--ease);font-size:11px}
.mega:hover .chev,.mega:focus-within .chev{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:820px;max-width:calc(100vw - 48px);
  padding:24px;border-radius:18px;
  background:var(--glass-strong);border:1px solid var(--line-hi);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.95);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.mega-title{font-size:12px;letter-spacing:.16em;color:var(--fg-dim);margin-bottom:12px;font-family:ui-monospace,Menlo,Consolas,monospace}
.mega-col a.mega-item{display:block;padding:9px 12px;border-radius:10px;color:var(--fg-muted);font-size:14px;transition:all .16s var(--ease)}
.mega-col a.mega-item:hover{background:rgba(33,212,194,.09);color:var(--fg);padding-left:16px}
.mega-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.mega-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:rgba(10,18,32,.6);transition:all .2s var(--ease)}
.mega-card:hover{border-color:var(--line-hi);transform:translateY(-3px)}
.mega-card img{width:100%;height:84px;object-fit:cover;opacity:.85}
.mega-card span{display:block;padding:10px 12px;font-size:13px;color:var(--fg-muted)}
.mega-foot{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.mega-foot-label{font-size:12px;letter-spacing:.16em;color:var(--accent);font-family:ui-monospace,Menlo,Consolas,monospace}
.mega-foot a{font-size:13.5px;color:var(--fg-muted);transition:color .16s var(--ease)}
.mega-foot a:hover{color:var(--brand)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:rgba(18,28,48,.6);cursor:pointer;padding:0;place-items:center;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--fg);border-radius:2px;position:relative;transition:background .18s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:17px;height:2px;background:var(--fg);border-radius:2px;transition:transform .2s var(--ease)}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.mobile-panel{display:none;border-top:1px solid var(--line);background:rgba(5,8,14,.98);padding:16px 0 24px}
.mobile-panel a{display:block;padding:13px 4px;border-bottom:1px solid var(--line);color:var(--fg-muted);font-size:15px}
.mobile-panel a.active{color:var(--brand)}
.mobile-panel .mp-label{padding:16px 4px 8px;font-size:12px;letter-spacing:.16em;color:var(--fg-dim);font-family:ui-monospace,Menlo,Consolas,monospace}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand),#39B7FF 120%);
  color:#04131A;
  box-shadow:0 0 0 1px rgba(33,212,194,.35),0 16px 40px -18px rgba(33,212,194,.85);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(33,212,194,.55),0 22px 50px -18px rgba(33,212,194,.95)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(33,212,194,.45);color:var(--brand)}
.btn-ghost:hover{background:rgba(33,212,194,.1);transform:translateY(-2px);box-shadow:0 14px 34px -20px rgba(33,212,194,.9)}
.btn-ghost:active{transform:translateY(0)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:104px 0 92px;background:linear-gradient(180deg,rgba(7,11,20,.86),rgba(7,11,20,.96)),url('/assets/images/backpic/back-1.webp') center/cover no-repeat}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,160,200,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,200,.07) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 80%);
  mask-image:linear-gradient(180deg,#000,transparent 80%);
}
.hero::after{
  content:"";position:absolute;top:-150px;left:-12%;width:72%;height:330px;pointer-events:none;
  background:linear-gradient(90deg,rgba(33,212,194,.24),rgba(108,123,255,0));
  transform:rotate(-8deg);filter:blur(8px);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center}
.hero h1{font-size:clamp(30px,4.6vw,54px);margin:20px 0 20px}
.hero h1 .hl{background:linear-gradient(100deg,var(--brand),#7FE7FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:var(--fg-muted);font-size:17px;max-width:52ch}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-trust{margin-top:22px;font-size:13px;color:var(--fg-dim);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.hero-trust i{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand);font-style:normal}
.hero-side{display:flex;flex-direction:column;gap:16px}
.hero-visual{border-radius:20px;overflow:hidden;border:1px solid var(--line);position:relative;box-shadow:var(--shadow-1)}
.hero-visual img{width:100%;height:260px;object-fit:cover;opacity:.9}
.hero-visual .caption{position:absolute;left:0;right:0;bottom:0;padding:16px 18px;background:linear-gradient(180deg,transparent,rgba(4,7,13,.94));font-size:13.5px;color:var(--fg-muted)}
.hero-stat{margin-top:-46px;margin-left:auto;margin-right:18px;position:relative;z-index:3;display:flex;gap:22px;padding:18px 22px;border-radius:16px;background:rgba(10,18,32,.86);border:1px solid var(--line-hi);backdrop-filter:blur(14px);box-shadow:var(--shadow-2);width:max-content;max-width:100%}
.hero-stat div{display:flex;flex-direction:column;gap:2px}
.hero-stat b{font-size:22px;color:var(--brand);font-family:ui-monospace,Menlo,Consolas,monospace}
.hero-stat span{font-size:12px;color:var(--fg-dim)}

/* ============ 品牌主张带 ============ */
.claim{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1);padding:30px 0}
.claim-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.claim h2{font-size:clamp(19px,2.2vw,27px);font-weight:600;color:var(--fg);letter-spacing:.02em}
.claim p{color:var(--fg-dim);font-size:14px;max-width:42ch}

/* ============ 故事区 ============ */
.story{display:grid;grid-template-columns:4fr 8fr;gap:56px}
.story-rail{display:flex;flex-direction:column;gap:26px;position:sticky;top:110px;align-self:start}
.rail-item{display:flex;gap:14px;align-items:flex-start;font-size:13.5px;color:var(--fg-dim)}
.rail-item b{font-family:ui-monospace,Menlo,Consolas,monospace;color:var(--accent);font-size:13px}
.story-body p{color:var(--fg-muted);font-size:16.5px;margin-bottom:20px}
.story-list{counter-reset:st;margin-top:8px;border-top:1px solid var(--line)}
.story-list li{counter-increment:st;display:flex;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.story-list li::before{content:"0" counter(st);font-family:ui-monospace,Menlo,Consolas,monospace;color:var(--brand);font-size:15px;padding-top:2px}
.story-list strong{display:block;font-size:16px;margin-bottom:4px}
.story-list span{color:var(--fg-dim);font-size:14px}

/* ============ 精选马赛克 ============ */
.mosaic{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.mo-card{display:flex;flex-direction:column;overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.mo-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow-2)}
.mo-card img{width:100%;object-fit:cover;transition:transform .3s var(--ease);opacity:.9}
.mo-card:hover img{transform:scale(1.03)}
.mo-main{grid-column:span 7;grid-row:span 2}
.mo-main img{height:318px}
.mo-v{grid-column:span 5}
.mo-v img{height:150px}
.mo-wide{grid-column:span 12;flex-direction:row;align-items:center}
.mo-wide img{width:280px;height:170px;flex-shrink:0}
.mo-body{padding:20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.mo-body h3{font-size:19px}
.mo-main .mo-body h3{font-size:23px}
.mo-body p{color:var(--fg-dim);font-size:14px}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;font-size:12px;border:1px solid rgba(255,176,32,.5);color:var(--accent);background:rgba(255,176,32,.08);width:max-content}
.badge-brand{border-color:rgba(33,212,194,.5);color:var(--brand);background:rgba(33,212,194,.08)}

/* ============ 数据与信任 ============ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:rgba(12,20,36,.5)}
.stat{padding:28px 24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{display:block;font-size:30px;color:var(--fg);font-family:ui-monospace,Menlo,Consolas,monospace;line-height:1.2}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:var(--fg-dim)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:28px}
.trust-item{padding:20px;border:1px solid var(--line);border-radius:14px;background:rgba(10,18,32,.45)}
.trust-item strong{display:block;font-size:14.5px;color:var(--fg);margin-bottom:6px}
.trust-item p{font-size:13.5px;color:var(--fg-dim)}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{display:flex;flex-direction:column;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);height:100%}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow-2)}
.news-thumb{width:100%;aspect-ratio:16/9;overflow:hidden;background:rgba(10,18,32,.7)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);opacity:.88}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--fg-dim)}
.news-body h3{font-size:17px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--fg-dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-empty{padding:48px 28px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px}
.news-empty p{color:var(--fg-muted)}

/* ============ FAQ ============ */
.faq{max-width:900px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 44px 20px 18px;position:relative;
  font-size:16.5px;font-weight:600;color:var(--fg);transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;border-radius:2px;
  background:var(--brand);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item summary::after{
  content:"+";position:absolute;right:14px;top:50%;transform:translateY(-50%);
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:20px;color:var(--brand);
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::before{opacity:1}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item summary:hover{color:var(--brand)}
.faq-answer{padding:0 44px 22px 18px;color:var(--fg-muted);font-size:15.5px}

/* ============ CTA ============ */
.cta-panel{
  position:relative;border-radius:22px;padding:52px 48px;
  background:linear-gradient(120deg,rgba(18,30,52,.92),rgba(10,18,32,.92));
  border:1px solid var(--line-hi);
  box-shadow:0 0 60px -22px rgba(33,212,194,.55);
  display:grid;grid-template-columns:6fr 6fr;gap:44px;align-items:center;overflow:hidden;
}
.cta-panel::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(33,212,194,.28),transparent 68%);
}
.cta-panel h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px}
.cta-panel p{color:var(--fg-muted);font-size:15.5px}
.sub-form{display:flex;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.sub-form input{
  flex:1;min-width:220px;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:rgba(6,11,20,.85);border:1px solid var(--line);color:var(--fg);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.sub-form input::placeholder{color:var(--fg-dim)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(33,212,194,.18)}
.form-note{font-size:12.5px;color:var(--fg-dim)}

/* ============ 页脚 ============ */
.footer{position:relative;background:#05080F;padding:72px 0 0;margin-top:0}
.footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(33,212,194,.55),transparent)}
.footer-grid{display:grid;grid-template-columns:4fr 3fr 3fr 2fr;gap:36px}
.footer h4{font-size:13px;letter-spacing:.14em;color:var(--fg-dim);font-family:ui-monospace,Menlo,Consolas,monospace;margin-bottom:18px;font-weight:600}
.footer-brand p{color:var(--fg-dim);font-size:14px;margin-top:16px;max-width:34ch}
.footer-links a{display:block;font-size:14px;color:var(--fg-muted);padding:6px 0;transition:color .16s var(--ease)}
.footer-links a:hover{color:var(--brand)}
.footer-contact p{font-size:14px;color:var(--fg-muted);margin-bottom:10px}
.footer-contact a{color:var(--brand)}
.footer-contact a:hover{text-decoration:underline}
.footer-bottom{margin-top:52px;border-top:1px solid var(--line);padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--fg-dim)}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media (max-width:1279px){
  .hero-grid{gap:40px}
  .mega-panel{width:720px}
}
@media (max-width:1023px){
  .nav-menu,.mega{display:none}
  .nav-toggle{display:grid}
  .section{padding:72px 0}
  .hero{padding:76px 0 66px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-stat{margin:0 auto 0 0}
  .story{grid-template-columns:1fr;gap:34px}
  .story-rail{position:static;flex-direction:row;flex-wrap:wrap;gap:18px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .mo-main,.mo-v{grid-column:span 12}
  .mo-main img{height:260px}
  .mo-v img{height:180px}
  .cta-panel{grid-template-columns:1fr;padding:40px 30px}
  .footer-grid{grid-template-columns:1fr 1fr}
  body.nav-open .mobile-panel{display:block}
}
@media (max-width:639px){
  .wrap{padding:0 18px}
  .section{padding:60px 0}
  .hero h1{font-size:30px}
  .hero-stat{flex-direction:row;gap:16px;padding:14px 16px;margin-top:-30px}
  .hero-stat b{font-size:19px}
  .news-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:none}
  .trust-grid{grid-template-columns:1fr}
  .mo-wide{flex-direction:column}
  .mo-wide img{width:100%;height:190px}
  .cta-panel{padding:32px 22px;border-radius:18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .topbar-brand em{display:none}
  .faq-item summary{padding:18px 40px 18px 14px;font-size:15.5px}
  .faq-answer{padding:0 34px 20px 14px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --brand:#21D4C2;
  --brand-2:#6C7BFF;
  --accent:#FFB020;
  --bg-0:#070B14;
  --bg-1:#0C1424;
  --glass:rgba(18,28,48,.55);
  --fg:#E8EEF7;
  --fg-soft:#D7E1EF;
  --fg-muted:#93A3BC;
  --fg-dim:#5F7089;
  --line:rgba(120,160,200,.16);
  --line-hi:rgba(33,212,194,.35);
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --sh-1:0 10px 30px -18px rgba(0,0,0,.9);
  --sh-2:0 0 0 1px rgba(33,212,194,.28),0 18px 48px -20px rgba(33,212,194,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg-0);
  color:var(--fg);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(120,160,200,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,160,200,.055) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,rgba(0,0,0,.95),transparent 72%);
  mask-image:radial-gradient(circle at 50% 0%,rgba(0,0,0,.95),transparent 72%);
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease)}
a:hover{color:#5FF0E0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.page-main{position:relative;z-index:1}

/* ---------- 顶部条 ---------- */
.topbar{background:#050810;border-bottom:1px solid var(--line);font-size:13px;position:relative;z-index:70}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar-brand{margin:0;display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--fg-muted)}
.topbar-brand b{color:var(--fg);font-weight:700}
.topbar-brand em{font-style:normal;color:var(--fg-dim);font-size:12.5px}
.topbar-links{display:flex;gap:18px;flex-shrink:0}
.topbar-links a{color:var(--fg-muted);font-size:13px}
.topbar-links a:hover{color:var(--brand)}

/* ---------- 主导航 ---------- */
.site-header{position:relative;z-index:70}
.mainnav{
  position:sticky;top:0;z-index:70;
  background:rgba(9,14,26,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:26px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;color:var(--fg);flex-shrink:0}
.logo:hover{color:var(--fg)}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  font:800 14px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.02em;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121A;
  box-shadow:0 8px 22px -12px rgba(33,212,194,.9);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;font-weight:800;letter-spacing:.01em}
.logo-text i{font-style:normal;font-size:10px;letter-spacing:.2em;color:var(--fg-dim)}
.nav-menu{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0;flex:1;min-width:0}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 13px;
  border-radius:10px;color:var(--fg-muted);font-size:14.5px;font-weight:500;white-space:nowrap;
}
.nav-link:hover{color:var(--fg);background:rgba(33,212,194,.08)}
.nav-link.active{color:var(--fg)}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
  box-shadow:0 0 10px rgba(33,212,194,.8);
}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}

/* ---------- Mega 面板 ---------- */
.mega{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  border-radius:var(--r-btn);border:1px solid var(--line);
  background:rgba(18,28,48,.6);color:var(--fg-muted);font-size:14px;cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.mega-trigger:hover,.mega:focus-within .mega-trigger{
  color:var(--fg);border-color:var(--line-hi);
  box-shadow:0 0 0 1px rgba(33,212,194,.18),0 12px 30px -20px rgba(33,212,194,.8);
}
.chev{display:inline-block;transition:transform .2s var(--ease);font-size:11px;opacity:.8}
.mega:hover .chev,.mega:focus-within .chev{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);
  width:780px;max-width:min(780px,calc(100vw - 36px));
  padding:22px;border-radius:18px;border:1px solid var(--line-hi);
  background:rgba(10,17,30,.9);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.95);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  z-index:80;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:1fr 300px;gap:24px}
.mega-title{margin:0 0 12px;font-size:12px;letter-spacing:.16em;color:var(--fg-dim);font-weight:700}
.mega-item{display:block;padding:8px 10px;border-radius:9px;color:var(--fg-muted);font-size:14px}
.mega-item:hover{background:rgba(33,212,194,.1);color:var(--fg)}
.mega-cards{display:grid;gap:12px}
.mega-card{
  display:flex;align-items:center;gap:12px;padding:10px;border-radius:14px;
  border:1px solid var(--line);background:rgba(18,28,48,.5);color:var(--fg-soft);font-size:13.5px;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.mega-card img{width:58px;height:44px;border-radius:9px;object-fit:cover;flex-shrink:0}
.mega-card:hover{border-color:var(--line-hi);transform:translateY(-2px);box-shadow:var(--sh-2);color:var(--fg)}
.mega-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);display:grid;gap:8px}
.mega-foot-row{display:flex;gap:10px;align-items:baseline;font-size:13.5px;color:var(--fg-muted)}
.mega-foot-row span{color:var(--accent);font:600 11px/1.6 ui-monospace,monospace;flex-shrink:0}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:44px 0 46px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(7,11,20,.82),rgba(7,11,20,.94)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 300px at 12% -10%,rgba(33,212,194,.22),transparent 68%),
             radial-gradient(520px 260px at 92% 120%,rgba(108,123,255,.2),transparent 70%);
}
.article-hero .wrap{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--fg-dim);margin-bottom:20px}
.crumbs a{color:var(--fg-dim)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{opacity:.55}
.crumbs .current{color:var(--fg-muted);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(255,176,32,.4);color:var(--accent);background:rgba(255,176,32,.1);
}
.badge-cyan{border-color:var(--line-hi);color:var(--brand);background:rgba(33,212,194,.1)}
.article-title{
  margin:16px 0 18px;
  font-size:clamp(26px,3.6vw,44px);
  line-height:1.3;font-weight:800;letter-spacing:-.01em;color:#fff;
  max-width:20ch;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13.5px;color:var(--fg-dim)}
.meta-row b{color:var(--fg-muted);font-weight:600}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--fg-dim);opacity:.7}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:40px;
  padding:48px 0 76px;
}
.reader{
  border:1px solid var(--line);border-radius:20px;
  background:linear-gradient(180deg,rgba(18,28,48,.5),rgba(12,20,36,.35));
  box-shadow:var(--sh-1);
  padding:clamp(20px,3.6vw,46px);
  min-width:0;
}
.reader-head{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding-bottom:18px;margin-bottom:26px;border-bottom:1px solid var(--line);
}
.reader-head p{margin:0;font-size:13px;color:var(--fg-dim)}
.reader-tip{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--brand)}
.reader-tip::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(33,212,194,.9)}

.article-body{font-size:17.5px;line-height:1.9;color:var(--fg-soft);word-break:break-word}
.article-body > * + *{margin-top:1.1em}
.article-body p{margin:0}
.article-body h2{
  position:relative;margin:2.4em 0 .8em;padding-left:16px;
  font-size:clamp(20px,2.3vw,27px);line-height:1.42;font-weight:800;color:#fff;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.article-body h3{margin:1.9em 0 .6em;font-size:19px;line-height:1.5;font-weight:700;color:#fff}
.article-body h4{margin:1.6em 0 .5em;font-size:17px;font-weight:700;color:#fff}
.article-body ul,.article-body ol{padding-left:1.4em;margin:1.05em 0}
.article-body li{margin:.45em 0}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;border-left:3px solid var(--brand);
  border-radius:0 14px 14px 0;background:var(--glass);color:var(--fg-muted);
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:var(--r-img);margin:1.5em auto;width:100%;height:auto}
.article-body figure{margin:1.5em 0}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--fg-dim);text-align:center}
.article-body a{border-bottom:1px solid rgba(33,212,194,.45)}
.article-body strong{color:#fff;font-weight:700}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;
  background:rgba(33,212,194,.12);color:#8FF5E6;padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:#080D18;border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.75;
}
.article-body pre code{background:none;padding:0;color:var(--fg-soft)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.4em 0;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;white-space:nowrap}
.article-body th{background:rgba(33,212,194,.08);color:#fff}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0}

/* ---------- 侧栏目录 ---------- */
.toc{display:none}
.toc-inner{
  position:sticky;top:96px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--glass);padding:18px;box-shadow:var(--sh-1);
}
.toc h3{margin:0 0 12px;font-size:12px;letter-spacing:.16em;color:var(--fg-dim);font-weight:700}
.toc-list{list-style:none;margin:0;padding:0;display:grid;gap:4px;max-height:60vh;overflow:auto}
.toc-list a{
  display:block;padding:7px 10px;border-radius:9px;font-size:13.5px;color:var(--fg-muted);
  border-left:2px solid transparent;
}
.toc-list a:hover{background:rgba(33,212,194,.1);color:var(--fg);border-left-color:var(--brand)}
.toc-foot{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:12.5px;color:var(--fg-dim)}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:rgba(18,28,48,.35);
}
.empty-state h2{margin:0 0 12px;font-size:24px;color:#fff;font-weight:800}
.empty-state p{margin:0 0 22px;color:var(--fg-muted);font-size:15px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;letter-spacing:.02em;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#27B7D8);color:#04121A;
  box-shadow:0 14px 34px -18px rgba(33,212,194,.95);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(33,212,194,.4),0 20px 44px -18px rgba(33,212,194,.85);color:#04121A}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;border-color:var(--line-hi);color:var(--brand);
}
.btn-ghost:hover{background:rgba(33,212,194,.1);transform:translateY(-2px);box-shadow:0 14px 34px -22px rgba(33,212,194,.9);color:var(--brand)}
.btn-ghost:active{transform:translateY(0)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14.5px;font-weight:600;
}
.btn-text .arrow{transition:transform .2s var(--ease)}
.btn-text:hover .arrow{transform:translateX(3px)}

/* ---------- 文章尾部入口 ---------- */
.article-foot{margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.article-foot h2{margin:0 0 18px;font-size:19px;font-weight:800;color:#fff}
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.entry-card{
  display:flex;flex-direction:column;gap:10px;padding:20px;border-radius:var(--r-card);
  border:1px solid var(--line);background:rgba(18,28,48,.5);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.entry-card:hover{border-color:var(--line-hi);transform:translateY(-4px);box-shadow:var(--sh-2)}
.entry-card b{color:#fff;font-size:15.5px;font-weight:700}
.entry-card span{color:var(--fg-muted);font-size:13.5px;line-height:1.7}
.entry-card em{font-style:normal;color:var(--brand);font-size:13.5px;font-weight:600}

/* ---------- 页脚 ---------- */
.footer{
  position:relative;z-index:1;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,20,36,.75),rgba(5,8,16,.96));
  padding-top:56px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:36px;padding-bottom:42px}
.footer-brand p{margin:16px 0 0;font-size:13.5px;color:var(--fg-muted);line-height:1.85;max-width:34ch}
.footer-links h4,.footer-contact h4{margin:0 0 14px;font-size:13px;letter-spacing:.14em;color:var(--fg-dim);font-weight:700}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:13.5px;color:var(--fg-muted)}
.footer-links a:hover{color:var(--brand)}
.footer-contact p{margin:0 0 9px;font-size:13.5px;color:var(--fg-muted)}
.footer-contact a{color:var(--brand)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:18px 0 24px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--fg-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:44px}
  .toc{display:block}
}
@media (max-width:1023px){
  .nav-inner{flex-wrap:wrap;gap:12px;padding-top:12px;padding-bottom:12px;min-height:0}
  .nav-menu{order:3;width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:2px;gap:2px}
  .nav-right{order:2;margin-left:auto}
  .mega-panel{position:static;width:100%;max-width:100%;margin-top:10px;transform:none;display:none;opacity:1;visibility:visible;box-shadow:0 18px 40px -26px rgba(0,0,0,.95)}
  .mega:hover .mega-panel,.mega:focus-within .mega-panel{display:block}
  .mega-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .article-hero{padding:32px 0 36px}
  .article-title{max-width:none}
  .article-body{font-size:16.5px;line-height:1.85}
  .reader{border-radius:16px}
  .entry-grid{grid-template-columns:1fr}
  .topbar-brand em{display:none}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .meta-row{gap:8px 14px}
  .nav-link{padding:0 10px;font-size:13.5px}
  .logo-text i{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
    --brand:#21D4C2;
    --brand-2:#6C7BFF;
    --accent:#FFB020;
    --bg-0:#070B14;
    --bg-1:#0C1424;
    --glass:rgba(18,28,48,.55);
    --fg:#E8EEF7;
    --fg-muted:#93A3BC;
    --fg-dim:#5F7089;
    --line:rgba(120,160,200,.16);
    --line-hi:rgba(33,212,194,.35);
    --r-card:16px;
    --r-btn:12px;
    --r-img:14px;
    --shadow-1:0 10px 30px -18px rgba(0,0,0,.9);
    --shadow-2:0 0 0 1px rgba(33,212,194,.28),0 18px 48px -20px rgba(33,212,194,.45);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  html body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    background:var(--bg-0);
    color:var(--fg);
    font-size:16px;
    line-height:1.75;
    letter-spacing:.01em;
    overflow-x:hidden;
  }
  body::before{
    content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
    background-image:linear-gradient(rgba(120,160,200,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,200,.045) 1px,transparent 1px);
    background-size:72px 72px;
    mask-image:radial-gradient(120% 90% at 50% 0%,#000 20%,transparent 78%);
    -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 20%,transparent 78%);
  }
  html a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
  html a:hover{color:#5ff0e2}
  html img{display:block;max-width:100%;height:auto}
  html button{font-family:inherit}
  h1,h2,h3,h4{line-height:1.28;letter-spacing:-.01em;font-weight:700}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}

  /* ---------- 顶部条 ---------- */
  .topbar{background:rgba(4,8,16,.92);border-bottom:1px solid var(--line)}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;font-size:13px;color:var(--fg-muted)}
  .topbar-brand{margin:0;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
  .topbar-brand b{color:var(--fg);font-weight:600}
  .topbar-brand em{font-style:normal;color:var(--fg-dim)}
  .topbar-links{display:flex;align-items:center;gap:18px}
  .topbar-links a{color:var(--fg-muted);font-size:13px}
  .topbar-links a:hover{color:var(--brand)}

  /* ---------- 主导航 ---------- */
  .site-header{position:sticky;top:0;z-index:80}
  .mainnav{
    background:rgba(8,14,26,.72);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:background .22s var(--ease),border-color .22s var(--ease);
  }
  .site-header.scrolled .mainnav{background:rgba(6,11,20,.94);border-bottom-color:var(--line)}
  .nav-inner{display:flex;align-items:center;gap:20px;min-height:72px}
  .logo{display:flex;align-items:center;gap:10px;color:var(--fg);flex:0 0 auto}
  .logo:hover{color:var(--fg)}
  .logo-mark{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#04141a;font-weight:800;font-size:15px;letter-spacing:.02em;
    box-shadow:0 0 0 1px rgba(33,212,194,.35),0 10px 24px -12px rgba(33,212,194,.7);
  }
  .logo-text b{display:block;font-size:16px;font-weight:700;line-height:1.2}
  .logo-text i{display:block;font-style:normal;font-size:10px;letter-spacing:.18em;color:var(--fg-dim)}
  .nav-menu{list-style:none;display:flex;align-items:center;gap:4px;margin:0;padding:0;flex:1 1 auto}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;min-height:44px;
    padding:0 14px;border-radius:10px;color:var(--fg-muted);font-size:15px;font-weight:500;
    transition:color .18s var(--ease),background .18s var(--ease);
  }
  .nav-link:hover{color:var(--fg);background:rgba(33,212,194,.08)}
  .nav-link.active{color:#fff;background:rgba(33,212,194,.10)}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--brand),var(--brand-2));
    box-shadow:0 0 10px rgba(33,212,194,.85);
  }
  .nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}

  .mega{position:relative}
  .mega-trigger{
    display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 16px;
    border-radius:12px;border:1px solid var(--line);background:rgba(12,20,36,.6);
    color:var(--fg);font-size:14px;font-weight:600;cursor:pointer;
    transition:border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
  }
  .mega-trigger:hover{border-color:var(--line-hi);background:rgba(33,212,194,.09);box-shadow:0 0 0 1px rgba(33,212,194,.22)}
  .chev{display:inline-block;font-size:11px;color:var(--brand);transition:transform .22s var(--ease)}
  .mega:hover .chev,.mega:focus-within .chev{transform:rotate(180deg)}
  .mega-panel{
    position:absolute;top:calc(100% + 14px);right:0;width:800px;max-width:min(92vw,800px);
    padding:22px;border-radius:16px;
    background:rgba(10,18,32,.88);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border:1px solid rgba(33,212,194,.35);
    box-shadow:0 30px 70px -30px rgba(0,0,0,.95);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  }
  .mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
  .mega-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px}
  .mega-title{margin:0 0 10px;font-size:12px;letter-spacing:.16em;color:var(--fg-dim);font-weight:600}
  .mega-item{display:block;padding:9px 10px;border-radius:9px;color:var(--fg-muted);font-size:14px;transition:background .16s var(--ease),color .16s var(--ease)}
  .mega-item:hover{background:rgba(33,212,194,.1);color:var(--fg)}
  .mega-cards{display:grid;gap:12px}
  .mega-card{
    display:block;padding:12px;border-radius:14px;border:1px solid var(--line);
    background:rgba(14,24,42,.6);color:var(--fg);font-size:14px;font-weight:600;
    transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .mega-card img{width:100%;height:86px;object-fit:cover;border-radius:10px;margin-bottom:10px}
  .mega-card span{display:block;color:var(--fg)}
  .mega-card:hover{transform:translateY(-3px);border-color:var(--line-hi);color:var(--fg);box-shadow:var(--shadow-2)}
  .mega-foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:18px;align-items:center}
  .mega-foot span{font-size:12px;letter-spacing:.14em;color:var(--fg-dim)}
  .mega-foot a{font-size:13.5px;color:var(--fg-muted)}
  .mega-foot a:hover{color:var(--brand)}

  /* ---------- 分类页 Hero ---------- */
  .cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);isolation:isolate}
  .cat-hero-bg{
    position:absolute;inset:0;z-index:-2;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
    opacity:.42;
  }
  .cat-hero::after{
    content:"";position:absolute;inset:0;z-index:-1;
    background:linear-gradient(100deg,rgba(7,11,20,.94) 0%,rgba(7,11,20,.82) 48%,rgba(10,20,36,.72) 100%);
  }
  .cat-hero-beam{
    position:absolute;top:-40%;right:-10%;width:52%;height:180%;z-index:-1;
    background:linear-gradient(180deg,rgba(33,212,194,.22),rgba(108,123,255,.06) 60%,transparent);
    transform:skewX(-18deg);filter:blur(4px);pointer-events:none;
  }
  .cat-hero-inner{padding:clamp(38px,5.6vw,64px) 0 clamp(32px,4.6vw,52px)}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--fg-dim);margin-bottom:18px}
  .crumb a{color:var(--fg-muted)}
  .crumb a:hover{color:var(--brand)}
  .crumb .sep{color:var(--fg-dim);opacity:.7}
  .crumb .now{color:var(--fg)}
  .cat-hero h1{margin:0 0 14px;font-size:clamp(28px,4.3vw,46px);font-weight:800;letter-spacing:-.015em}
  .cat-hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .cat-lead{margin:0;max-width:760px;color:var(--fg-muted);font-size:clamp(15px,1.6vw,17px)}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .tag{
    display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;
    font-size:13px;color:var(--brand);background:rgba(33,212,194,.07);border:1px solid var(--line-hi);
  }
  .tag.amber{color:var(--accent);background:rgba(255,176,32,.08);border-color:rgba(255,176,32,.4)}

  /* ---------- 主体布局 ---------- */
  .cat-main{padding:clamp(40px,6vw,72px) 0 clamp(48px,7vw,88px)}
  .cat-layout{display:grid;grid-template-columns:252px minmax(0,1fr);gap:44px;align-items:start}

  .toc{
    position:sticky;top:100px;padding:20px 16px;border-radius:var(--r-card);
    background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--line);box-shadow:var(--shadow-1);
  }
  .toc h2{margin:0 0 12px;padding:0 10px;font-size:12px;letter-spacing:.16em;color:var(--fg-dim);font-weight:600}
  .toc a{
    position:relative;display:block;padding:10px 10px 10px 16px;border-radius:9px;
    color:var(--fg-muted);font-size:14.5px;transition:color .16s var(--ease),background .16s var(--ease);
  }
  .toc a::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:2px;height:0;border-radius:2px;background:var(--brand);transition:height .2s var(--ease);
  }
  .toc a:hover{color:var(--fg);background:rgba(33,212,194,.08)}
  .toc a:hover::before{height:18px;box-shadow:0 0 8px var(--brand)}
  .toc a.current{color:#fff;background:rgba(33,212,194,.12)}
  .toc a.current::before{height:18px;box-shadow:0 0 8px var(--brand)}
  .toc-note{margin:14px 10px 0;font-size:12.5px;color:var(--fg-dim);line-height:1.6}

  .cat-flow{display:flex;flex-direction:column;gap:34px}
  .block{
    position:relative;padding:clamp(22px,3vw,32px);border-radius:var(--r-card);
    background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border:1px solid var(--line);box-shadow:var(--shadow-1);scroll-margin-top:104px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .block::before{
    content:"";position:absolute;left:0;top:0;width:64px;height:1px;
    background:linear-gradient(90deg,var(--brand),transparent);
  }
  .block:hover{border-color:rgba(33,212,194,.24);box-shadow:var(--shadow-2)}
  .block-num{display:block;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;letter-spacing:.18em;color:var(--accent);margin-bottom:10px}
  .block h2{position:relative;margin:0 0 14px;padding-left:14px;font-size:clamp(20px,2.2vw,26px)}
  .block h2::before{
    content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:3px;border-radius:3px;
    background:linear-gradient(180deg,var(--brand),var(--brand-2));
  }
  .block p{margin:0 0 12px;color:rgba(232,238,247,.86);font-size:15.6px}
  .block p:last-child{margin-bottom:0}

  .points{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:10px}
  .points li{position:relative;padding-left:24px;font-size:15px;color:rgba(232,238,247,.82)}
  .points li::before{
    content:"";position:absolute;left:3px;top:.62em;width:8px;height:8px;border-radius:2px;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 0 10px rgba(33,212,194,.65);
  }

  .split{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center;margin-top:18px}
  .split.rev .media{order:-1}
  .media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--shadow-1);transition:transform .25s var(--ease)}
  .split:hover .media img{transform:scale(1.02)}
  .media figcaption{margin-top:10px;font-size:12.5px;color:var(--fg-dim)}

  .steps{display:grid;gap:12px;margin-top:18px;padding:0;list-style:none}
  .step{display:flex;gap:14px;align-items:flex-start;padding:14px 16px;border-radius:12px;border:1px solid var(--line);background:rgba(10,18,32,.5);transition:border-color .18s var(--ease),transform .18s var(--ease)}
  .step:hover{border-color:var(--line-hi);transform:translateX(3px)}
  .step b{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--accent);font-size:13.5px;letter-spacing:.1em;min-width:36px;padding-top:2px}
  .step span{font-size:15px;color:rgba(232,238,247,.86)}

  .notecard{margin-top:18px;padding:16px 18px;border-radius:12px;border:1px solid rgba(255,176,32,.32);background:rgba(255,176,32,.06);color:rgba(232,238,247,.88);font-size:14.6px}
  .notecard b{color:var(--accent)}

  /* ---------- 数据条 ---------- */
  .statbar{
    margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);
    border-radius:var(--r-card);border:1px solid var(--line);overflow:hidden;
    background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  }
  .statbar > div{padding:22px 20px;border-left:1px solid var(--line)}
  .statbar > div:first-child{border-left:0}
  .statbar strong{
    display:block;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    font-size:clamp(20px,2.3vw,28px);color:#fff;letter-spacing:.01em;line-height:1.3;
  }
  .statbar span{display:block;margin-top:4px;font-size:13px;color:var(--fg-muted)}

  /* ---------- 常见问题 ---------- */
  .faq-sec{margin-top:52px;scroll-margin-top:104px}
  .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:22px}
  .sec-head h2{margin:0;font-size:clamp(22px,2.6vw,30px)}
  .sec-head p{margin:6px 0 0;color:var(--fg-muted);font-size:14.6px;max-width:640px}
  .faq-list{display:grid;gap:12px}
  .faq-list details{
    border:1px solid var(--line);border-radius:14px;background:rgba(10,18,32,.55);
    overflow:hidden;transition:border-color .2s var(--ease),background .2s var(--ease);
  }
  .faq-list details:hover{border-color:rgba(33,212,194,.24)}
  .faq-list details[open]{border-color:var(--line-hi);background:rgba(12,22,40,.72)}
  .faq-list summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;
    padding:16px 18px;font-size:15.6px;font-weight:600;color:var(--fg);min-height:44px;
  }
  .faq-list summary::-webkit-details-marker{display:none}
  .faq-list summary::after{
    content:"+";flex:0 0 auto;width:22px;text-align:center;color:var(--brand);font-size:20px;line-height:1;
    transition:transform .2s var(--ease);
  }
  .faq-list details[open] summary::after{content:"−";transform:rotate(180deg)}
  .faq-list details[open] summary{border-left:2px solid var(--brand)}
  .faq-list .answer{margin:0;padding:0 18px 18px 20px;color:var(--fg-muted);font-size:15px}

  /* ---------- CTA ---------- */
  .cta{
    position:relative;overflow:hidden;margin-top:52px;padding:clamp(24px,3.6vw,40px);
    border-radius:20px;border:1px solid var(--line-hi);
    background:linear-gradient(118deg,rgba(18,32,54,.92),rgba(9,16,30,.78));
    box-shadow:0 0 0 1px rgba(33,212,194,.16),0 34px 80px -44px rgba(33,212,194,.75);
    scroll-margin-top:104px;
  }
  .cta::after{
    content:"";position:absolute;top:-60%;right:-12%;width:46%;height:200%;
    background:linear-gradient(180deg,rgba(33,212,194,.2),transparent 70%);
    transform:skewX(-18deg);pointer-events:none;
  }
  .cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.08fr .92fr;gap:32px;align-items:center}
  .cta h2{margin:0 0 12px;font-size:clamp(21px,2.5vw,29px)}
  .cta p{margin:0 0 10px;color:var(--fg-muted);font-size:15px}
  .cta-points{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
  .cta-points li{
    padding:6px 12px;border-radius:999px;font-size:13px;color:var(--brand);
    background:rgba(33,212,194,.08);border:1px solid var(--line-hi);
  }
  .sub-form{display:grid;gap:12px;padding:20px;border-radius:16px;border:1px solid var(--line);background:rgba(6,12,22,.62)}
  .sub-form label{display:block;font-size:13px;color:var(--fg-muted)}
  .sub-form input{
    width:100%;min-height:48px;padding:0 16px;border-radius:12px;
    background:rgba(4,9,18,.9);border:1px solid var(--line);color:var(--fg);font-size:15px;
    outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .sub-form input::placeholder{color:var(--fg-dim)}
  .sub-form input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(33,212,194,.16)}
  .form-tip{margin:0;font-size:12.5px;color:var(--fg-dim);line-height:1.6}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;
    transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  }
  .btn-primary{background:linear-gradient(120deg,var(--brand),#41e2d1);color:#04141a;box-shadow:0 12px 32px -16px rgba(33,212,194,.95)}
  .btn-primary:hover{color:#04141a;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(33,212,194,.4),0 20px 46px -18px rgba(33,212,194,.9)}
  .btn-ghost{background:transparent;border-color:var(--line-hi);color:var(--brand)}
  .btn-ghost:hover{background:rgba(33,212,194,.1);color:#6ff2e5;transform:translateY(-2px)}
  .btn:active{transform:translateY(0)}
  .btn-block{width:100%}
  .btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14.6px;font-weight:600}
  .btn-text i{font-style:normal;transition:transform .18s var(--ease)}
  .btn-text:hover i{transform:translateX(3px)}

  /* ---------- 其它栏目入口 ---------- */
  .cat-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:34px}
  .linkcard{
    display:flex;align-items:center;gap:16px;padding:16px;border-radius:var(--r-card);
    border:1px solid var(--line);background:var(--glass);color:var(--fg);
    transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .linkcard:hover{color:var(--fg);transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow-2)}
  .linkcard img{width:96px;height:72px;object-fit:cover;border-radius:12px;flex:0 0 auto}
  .linkcard b{display:block;font-size:15.5px;margin-bottom:4px}
  .linkcard span{display:block;font-size:13.4px;color:var(--fg-muted);line-height:1.6}

  /* ---------- 页脚 ---------- */
  .footer{position:relative;margin-top:72px;padding:56px 0 24px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,17,30,.66),rgba(4,8,15,.96))}
  .footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(33,212,194,.55),transparent)}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:32px}
  .footer-brand .logo{margin-bottom:14px}
  .footer-brand p{margin:0;color:var(--fg-muted);font-size:14px;max-width:360px}
  .footer-links h4,.footer-contact h4{margin:0 0 14px;font-size:14px;color:var(--fg);font-weight:600}
  .footer-links a{display:block;padding:5px 0;color:var(--fg-muted);font-size:14px}
  .footer-links a:hover{color:var(--brand)}
  .footer-contact p{margin:0 0 8px;color:var(--fg-muted);font-size:14px}
  .footer-contact a{color:var(--fg-muted)}
  .footer-contact a:hover{color:var(--brand)}
  .footer-bottom{
    margin-top:36px;padding-top:18px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--fg-dim);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .nav-inner{flex-wrap:wrap;padding:10px 0;gap:12px;min-height:0}
    .nav-right{order:2}
    .nav-menu{
      order:3;width:100%;overflow-x:auto;gap:2px;
      scrollbar-width:none;-ms-overflow-style:none;
    }
    .nav-menu::-webkit-scrollbar{display:none}
    .nav-link{white-space:nowrap;min-height:40px;padding:0 12px;font-size:14px}
    .nav-link.active::after{bottom:4px}
    .mega-panel{width:min(94vw,560px)}
    .mega-grid{grid-template-columns:1fr}
    .mega-cards{display:none}
    .cat-layout{grid-template-columns:minmax(0,1fr);gap:28px}
    .toc{position:static}
    .toc a{display:inline-block;padding:8px 14px;margin:0 6px 6px 0;border:1px solid var(--line)}
    .toc a::before{display:none}
    .toc-note{margin-left:0}
    .cta-inner{grid-template-columns:minmax(0,1fr);gap:24px}
    .statbar{grid-template-columns:repeat(2,1fr)}
    .statbar > div:nth-child(3){border-left:0}
    .statbar > div:nth-child(n+3){border-top:1px solid var(--line)}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  }
  @media (max-width:639px){
    .wrap{padding:0 18px}
    .topbar-inner{min-height:36px}
    .topbar-brand em{display:none}
    .topbar-links a:first-child{display:none}
    .split{grid-template-columns:minmax(0,1fr)}
    .split.rev .media{order:0}
    .statbar{grid-template-columns:minmax(0,1fr)}
    .statbar > div{border-left:0;border-top:1px solid var(--line)}
    .statbar > div:first-child{border-top:0}
    .cat-links{grid-template-columns:minmax(0,1fr)}
    .linkcard{flex-direction:row}
    .linkcard img{width:78px;height:64px}
    .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
    .footer-bottom{flex-direction:column;gap:8px}
    .mega-panel{width:min(94vw,420px);padding:16px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
  }

/* roulang page: category2 */
:root{
  --brand:#21D4C2;
  --brand-2:#6C7BFF;
  --accent:#FFB020;
  --bg-0:#070B14;
  --bg-1:#0C1424;
  --glass:rgba(18,28,48,.55);
  --fg:#E8EEF7;
  --fg-muted:#93A3BC;
  --fg-dim:#5F7089;
  --line:rgba(120,160,200,.16);
  --line-hi:rgba(33,212,194,.35);
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --sh-1:0 10px 30px -18px rgba(0,0,0,.9);
  --sh-hi:0 0 0 1px rgba(33,212,194,.28),0 18px 48px -20px rgba(33,212,194,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  background:var(--bg-0);
  color:var(--fg);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
body a:hover{color:#63F2E2;text-decoration:underline;text-underline-offset:3px}
body h1,body h2,body h3,body h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:-.01em}
body p{margin:0}
body ul,body ol{margin:0;padding:0;list-style:none}
body img{display:block;max-width:100%;height:auto}
body button,body input{font:inherit;color:inherit}
body button{cursor:pointer;background:none;border:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:640px){.wrap{padding:0 18px}}

/* ---------- 按钮 / 标签 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease)}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:linear-gradient(135deg,var(--brand),#3FB6FF 58%,var(--brand-2));color:#04121A;box-shadow:0 12px 30px -14px rgba(33,212,194,.85)}
.btn-primary:hover{color:#04121A;box-shadow:0 20px 42px -16px rgba(33,212,194,1)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--brand)}
.btn-ghost:hover{border-color:var(--line-hi);box-shadow:0 0 0 1px rgba(33,212,194,.18)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600}
.text-link i{font-style:normal;transition:transform .2s var(--ease)}
.text-link:hover i{transform:translateX(3px)}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;border:1px solid var(--line-hi);color:var(--brand);background:rgba(33,212,194,.1)}
.badge-accent{border-color:rgba(255,176,32,.42);color:var(--accent);background:rgba(255,176,32,.1)}
.badge-soft{border-color:var(--line);color:var(--fg-muted);background:rgba(120,160,200,.08)}

/* ---------- 顶部条 ---------- */
.topbar{background:#050810;border-bottom:1px solid var(--line);font-size:13px;color:var(--fg-muted)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-brand{margin:0;display:flex;align-items:center;gap:10px;min-width:0}
.topbar-brand b{color:var(--fg);font-weight:600}
.topbar-brand em{font-style:normal;color:var(--fg-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;gap:16px;flex-shrink:0}
.topbar-links a{color:var(--fg-muted);font-size:13px}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60}
.mainnav{background:rgba(7,11,20,.84);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background .22s var(--ease),border-color .22s var(--ease)}
.site-header.scrolled .mainnav{background:rgba(5,8,16,.95);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:22px;min-height:72px;padding-top:8px;padding-bottom:8px}
.logo{display:flex;align-items:center;gap:10px}
.logo:hover{text-decoration:none}
.logo-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:.04em;color:#04121A;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 10px 24px -14px rgba(33,212,194,.95);flex-shrink:0}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{color:var(--fg);font-size:16px;font-weight:700;letter-spacing:.02em}
.logo-text i{font-style:normal;font-size:10px;letter-spacing:.22em;color:var(--fg-dim)}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:10px;font-size:15px;color:var(--fg-muted);white-space:nowrap;transition:color .18s var(--ease),background .18s var(--ease)}
.nav-link:hover{color:var(--fg);background:rgba(33,212,194,.09);text-decoration:none}
.nav-link.active{color:var(--fg);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));box-shadow:0 0 12px rgba(33,212,194,.85)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}

.mega{position:relative}
.mega::after{content:"";position:absolute;left:0;right:0;top:100%;height:16px}
.mega-trigger{display:inline-flex;align-items:center;gap:8px;min-height:42px;padding:0 16px;border-radius:var(--r-btn);border:1px solid var(--line);background:rgba(18,28,48,.6);color:var(--fg);font-size:14px;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease)}
.mega-trigger:hover{border-color:var(--line-hi);color:var(--brand)}
.chev{transition:transform .22s var(--ease);display:inline-block}
.mega:hover .chev,.mega:focus-within .chev,.mega.open .chev{transform:rotate(180deg)}
.mega-panel{position:absolute;right:0;top:calc(100% + 12px);width:820px;max-width:calc(100vw - 48px);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);background:rgba(12,20,36,.92);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 34px 76px -34px rgba(0,0,0,.95);z-index:70}
.mega:hover .mega-panel,.mega:focus-within .mega-panel,.mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);border-color:var(--line-hi)}
.mega-grid{display:grid;grid-template-columns:1fr 1.12fr;gap:22px}
.mega-title{font-size:11px;letter-spacing:.18em;color:var(--fg-dim);margin:0 0 10px}
.mega-item{display:block;font-size:14px;color:var(--fg-muted);padding:8px 10px;border-radius:9px;border-left:1px solid transparent;transition:.18s var(--ease)}
.mega-item:hover{color:var(--fg);background:rgba(33,212,194,.1);border-left-color:var(--brand);text-decoration:none}
.mega-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mega-card{display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:rgba(18,28,48,.5);transition:.2s var(--ease)}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .28s var(--ease)}
.mega-card span{display:block;padding:10px 12px;font-size:13px;color:var(--fg);line-height:1.5}
.mega-card:hover{border-color:var(--line-hi);text-decoration:none;box-shadow:var(--sh-hi)}
.mega-card:hover img{transform:scale(1.05)}
.mega-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:grid;gap:6px}
.mega-latest{display:block;font-size:13px;color:var(--fg-muted);padding:6px 0}
.mega-latest:hover{color:var(--brand);text-decoration:none}

/* ---------- 分类头部 ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:#060A12}
.cat-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.4}
.cat-hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,.74) 0%,rgba(7,11,20,.93) 60%,var(--bg-0) 100%)}
.cat-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(120,160,200,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,200,.06) 1px,transparent 1px);background-size:58px 58px;pointer-events:none}
.cat-hero::after{content:"";position:absolute;top:-96px;right:-110px;width:420px;height:280px;background:linear-gradient(100deg,rgba(33,212,194,.3),transparent 72%);transform:skewX(-18deg);filter:blur(6px);pointer-events:none}
.cat-hero-inner{position:relative;z-index:2;padding-block:56px 52px}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--fg-dim);margin-bottom:18px}
.breadcrumb a{color:var(--fg-muted)}
.breadcrumb a:hover{color:var(--brand)}
.cat-hero h1{font-size:clamp(28px,4.2vw,50px);font-weight:800;max-width:17em}
.cat-hero-lead{margin-top:16px;max-width:64ch;color:var(--fg-muted);font-size:16px}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chip{min-height:42px;padding:0 18px;border-radius:999px;border:1px solid var(--line);background:rgba(18,28,48,.62);color:var(--fg-muted);font-size:14px;transition:.2s var(--ease)}
.chip:hover{color:var(--fg);border-color:var(--line-hi);transform:translateY(-1px)}
.chip.is-on{color:#04121A;background:linear-gradient(135deg,var(--brand),var(--brand-2));border-color:transparent;font-weight:700;box-shadow:0 12px 28px -16px rgba(33,212,194,.95)}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:34px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--line)}
.stat{background:rgba(10,16,28,.74);padding:16px 18px;backdrop-filter:blur(10px)}
.stat b{display:block;font-family:var(--mono);font-size:22px;color:var(--brand);letter-spacing:.02em;line-height:1.3}
.stat span{font-size:13px;color:var(--fg-dim)}

/* ---------- 板块 ---------- */
.section{padding-block:96px}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (max-width:1023px){.section{padding-block:72px}}
@media (max-width:640px){.section{padding-block:56px}}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:42px}
.sec-kicker{font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--brand);margin-bottom:10px}
.sec-head h2{font-size:clamp(22px,2.6vw,34px);max-width:24em}
.sec-note{max-width:42ch;color:var(--fg-muted);font-size:14px}

/* ---------- 交错卡片 ---------- */
.waterfall{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;align-items:start}
.wcard{position:relative;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.wcard::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(33,212,194,.8),transparent 62%);z-index:3}
.wcard:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--sh-hi)}
.wcard:nth-child(even){margin-top:60px}
.wcard-media{position:relative;display:block;overflow:hidden}
.wcard-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
.wcard:nth-child(3) .wcard-media img,.wcard:nth-child(6) .wcard-media img{aspect-ratio:4/3}
.wcard:hover .wcard-media img{transform:scale(1.04)}
.wcard-media .badge{position:absolute;left:14px;top:14px;background:rgba(7,11,20,.76);backdrop-filter:blur(8px)}
.wcard-body{padding:22px 22px 24px}
.wcard-body h3{font-size:19px;margin-bottom:10px}
.wcard-body h3 a{color:var(--fg)}
.wcard-body h3 a:hover{color:var(--brand);text-decoration:none}
.wcard-body p{color:var(--fg-muted);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.wcard-meta{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 12px;font-size:12px;color:var(--fg-dim);font-family:var(--mono)}
.empty-hint{margin-top:26px;padding:20px 22px;border:1px dashed var(--line);border-radius:var(--r-card);color:var(--fg-muted);font-size:14px;text-align:center}

/* ---------- 通栏数据条 ---------- */
.databar{display:grid;grid-template-columns:1fr 1.5fr;gap:28px;align-items:center;margin-top:56px;padding:28px 32px;border-radius:22px;border:1px solid var(--line-hi);background:linear-gradient(120deg,rgba(33,212,194,.14),rgba(108,123,255,.1) 55%,rgba(18,28,48,.72));backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:0 26px 64px -36px rgba(33,212,194,.7)}
.databar-lead b{display:block;font-size:17px;margin-bottom:6px}
.databar-lead span{font-size:13px;color:var(--fg-muted)}
.databar-items{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.databar-items > div{border-left:1px solid var(--line);padding-left:18px}
.databar-items b{display:block;font-family:var(--mono);font-size:24px;color:var(--brand);line-height:1.2}
.databar-items span{font-size:13px;color:var(--fg-muted)}

/* ---------- 流程 ---------- */
.bracket{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.bracket li{position:relative;padding:26px 22px;border:1px solid var(--line);border-radius:var(--r-card);background:rgba(18,28,48,.5);backdrop-filter:blur(12px);transition:.22s var(--ease)}
.bracket li:hover{border-color:var(--line-hi);transform:translateY(-4px);box-shadow:var(--sh-hi)}
.bracket .num{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.14em}
.bracket h3{font-size:17px;margin:12px 0 10px}
.bracket p{font-size:14px;color:var(--fg-muted)}
.bracket li::after{content:"";position:absolute;top:50%;right:-22px;width:22px;height:1px;background:linear-gradient(90deg,var(--line-hi),transparent)}
.bracket li:last-child::after{display:none}

/* ---------- 图文两栏 ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.two-col-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.two-col-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.two-col-media::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(33,212,194,.16),transparent 58%)}
.two-col-body h2{margin-bottom:16px}
.two-col-body > p{color:var(--fg-muted);margin-bottom:20px}
.checklist{display:grid;gap:12px;margin-bottom:26px}
.checklist li{position:relative;padding-left:20px;font-size:15px;color:var(--fg-muted)}
.checklist li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.checklist li b{color:var(--fg)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:1.55fr 1fr;gap:44px;align-items:start}
.faq-list{display:grid;gap:14px}
.faq{border:1px solid var(--line);border-radius:var(--r-card);background:rgba(18,28,48,.5);backdrop-filter:blur(12px);overflow:hidden;transition:.2s var(--ease)}
.faq:hover{border-color:var(--line-hi)}
.faq summary{list-style:none;cursor:pointer;position:relative;padding:20px 56px 20px 22px;font-weight:700;font-size:16px;color:var(--fg)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);color:var(--brand);font-size:20px;line-height:1;transition:transform .2s var(--ease)}
.faq[open]{border-color:var(--line-hi);box-shadow:0 0 0 1px rgba(33,212,194,.18)}
.faq[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq-body{padding:16px 22px 22px;border-top:1px solid var(--line);border-left:2px solid var(--brand);color:var(--fg-muted);font-size:15px;margin-left:0}
.side-card{border:1px solid var(--line);border-radius:var(--r-card);background:rgba(18,28,48,.52);backdrop-filter:blur(12px);padding:24px}
.side-card h3{font-size:17px;margin-bottom:12px}
.side-card p{font-size:14px;color:var(--fg-muted);margin-bottom:16px}
.side-list{display:grid;gap:10px;margin-bottom:18px}
.side-list li{font-size:14px;color:var(--fg-muted);padding-left:16px;position:relative}
.side-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ---------- CTA ---------- */
.cta-panel{display:grid;grid-template-columns:1.15fr 1fr;gap:44px;padding:44px;border-radius:24px;border:1px solid var(--line-hi);background:linear-gradient(130deg,rgba(33,212,194,.15),rgba(12,20,36,.88) 56%,rgba(108,123,255,.18));backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:0 0 74px -32px rgba(33,212,194,.6)}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px}
.cta-copy p{color:var(--fg-muted)}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.cta-points li{font-size:13px;color:var(--brand);border:1px solid var(--line-hi);border-radius:999px;padding:5px 14px;background:rgba(33,212,194,.08)}
.cta-form{display:grid;gap:12px;align-content:start}
.cta-form label{font-size:13px;color:var(--fg-muted)}
.cta-form input{height:48px;padding:0 16px;border-radius:var(--r-btn);background:rgba(7,11,20,.78);border:1px solid var(--line);color:var(--fg);transition:.2s var(--ease)}
.cta-form input::placeholder{color:var(--fg-dim)}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(33,212,194,.18)}
.form-tip{font-size:12px;color:var(--fg-dim);line-height:1.6}
.cross-links{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:32px}
.cross-card{display:flex;gap:16px;align-items:center;padding:16px;border:1px solid var(--line);border-radius:var(--r-card);background:rgba(18,28,48,.5);transition:.2s var(--ease)}
.cross-card img{width:88px;height:62px;border-radius:10px;object-fit:cover;flex-shrink:0}
.cross-card b{display:block;color:var(--fg);font-size:15px;margin-bottom:4px}
.cross-card span{font-size:13px;color:var(--fg-muted)}
.cross-card:hover{border-color:var(--line-hi);transform:translateY(-3px);text-decoration:none;box-shadow:var(--sh-hi)}
.cross-card:hover b{color:var(--brand)}
.back-home{margin-top:28px;text-align:center}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line);background:#050810;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand p{color:var(--fg-muted);font-size:14px;margin-top:16px;max-width:34ch}
.footer-links{display:grid;gap:10px;align-content:start}
.footer-links h4{font-size:14px;color:var(--fg);margin-bottom:4px}
.footer-links a{font-size:14px;color:var(--fg-muted)}
.footer-links a:hover{color:var(--brand)}
.footer-contact h4{font-size:14px;margin-bottom:12px}
.footer-contact p{font-size:14px;color:var(--fg-muted);margin-bottom:8px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;border-top:1px solid var(--line);padding:20px 0 28px;font-size:13px;color:var(--fg-dim)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-inner{flex-wrap:wrap;gap:12px}
  .nav-menu{order:3;width:100%;overflow-x:auto;padding-bottom:6px}
  .nav-right{margin-left:auto}
  .mega-panel{position:static;width:100%;max-width:100%;opacity:1;visibility:hidden;display:none;transform:none;margin-top:12px}
  .mega:hover .mega-panel{display:none}
  .mega:focus-within .mega-panel,.mega.open .mega-panel{display:block;visibility:visible}
  .mega::after{display:none}
  .mega-grid{grid-template-columns:1fr;gap:18px}
  .bracket{grid-template-columns:repeat(2,1fr)}
  .bracket li::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .faq-wrap{grid-template-columns:1fr;gap:30px}
}
@media (max-width:900px){
  .two-col{grid-template-columns:1fr;gap:30px}
  .cta-panel{grid-template-columns:1fr;padding:30px;gap:28px}
  .databar{grid-template-columns:1fr;padding:24px}
}
@media (max-width:768px){
  .waterfall{grid-template-columns:1fr;gap:22px}
  .wcard:nth-child(even){margin-top:0}
  .wcard:nth-child(3) .wcard-media img,.wcard:nth-child(6) .wcard-media img{aspect-ratio:16/9}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .databar-items{grid-template-columns:1fr;gap:14px}
  .databar-items > div{border-left:0;border-top:1px solid var(--line);padding:12px 0 0}
  .cross-links{grid-template-columns:1fr}
  .topbar-brand em{display:none}
}
@media (max-width:560px){
  .bracket{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .filter-bar{gap:8px}
  .chip{flex:1 1 auto;padding:0 14px;font-size:13px}
  .cross-card{flex-direction:column;align-items:flex-start}
  .cross-card img{width:100%;height:130px}
}