/* roulang page: index */
:root{
  --ink-900:#060A14;
  --ink-800:#0A1120;
  --surface:#101A2E;
  --surface-2:#16223A;
  --glass:rgba(16,26,46,.72);
  --brand:#1FE0C0;
  --brand-2:#6E5BFF;
  --accent:#FFB03A;
  --text:#EDF3FF;
  --text-2:#9AA8BE;
  --text-3:#64748B;
  --line:rgba(120,180,255,.14);
  --line-2:rgba(120,180,255,.26);
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-soft:0 8px 24px rgba(0,0,0,.35),0 0 0 1px rgba(31,224,192,.10);
  --nav-w:76px;
  --mono:"SFMono-Regular",Menlo,Consolas,"PingFang SC",monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 520px at 88% -10%,rgba(110,91,255,.16),transparent 62%),
    radial-gradient(760px 480px at 4% 8%,rgba(31,224,192,.12),transparent 60%);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .16s ease-out;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible,.nav-item:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;
}
.container-x{
  width:100%;max-width:1140px;margin:0 auto;padding:0 20px 0 32px;position:relative;z-index:1;
}
@media (min-width:1400px){.container-x{max-width:1320px;}}

/* ============ App Shell 导航 ============ */
.app-shell{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:rgba(10,17,32,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-right:1px solid var(--line);
  box-shadow:1px 0 0 rgba(255,255,255,.03) inset;
  z-index:1040;display:flex;flex-direction:column;
  transition:width .22s ease-out;overflow:hidden;
}
.app-shell:hover,.app-shell.is-open{width:240px;}
.brand{
  display:flex;align-items:center;gap:12px;padding:18px 18px 16px;flex:0 0 auto;
}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;display:grid;place-items:center;
  font-weight:800;font-size:15px;color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 0 1px rgba(31,224,192,.35),0 8px 20px rgba(31,224,192,.20);
}
.brand-text{white-space:nowrap;font-weight:700;font-size:15px;color:var(--text);opacity:0;transform:translateX(-8px);transition:.2s ease-out;}
.app-shell:hover .brand-text,.app-shell.is-open .brand-text{opacity:1;transform:none;}
.nav-list{flex:1 1 auto;overflow-y:auto;overflow-x:hidden;padding:6px 0;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:14px;height:48px;margin:2px 10px;
  padding:0 12px;border-radius:var(--r-sm);color:var(--text-2);white-space:nowrap;
  font-size:14.5px;font-weight:500;
}
.nav-item i{width:20px;flex:0 0 20px;text-align:center;font-size:17px;}
.nav-text{opacity:0;transform:translateX(-6px);transition:.2s ease-out;}
.app-shell:hover .nav-text,.app-shell.is-open .nav-text{opacity:1;transform:none;}
.nav-item:hover{background:rgba(31,224,192,.08);color:var(--text);}
.nav-item.active{background:rgba(31,224,192,.12);color:#fff;}
.nav-item.active::before{
  content:"";position:absolute;left:-10px;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);box-shadow:0 0 12px rgba(31,224,192,.6);
}
.nav-foot{padding:14px 18px 20px;border-top:1px solid var(--line);white-space:nowrap;}
.nav-foot a{color:var(--text-3);font-size:12.5px;}
.nav-foot a:hover{color:var(--brand);}

.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:1050;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(10,17,32,.92);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;}
.topbar-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:13px;}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(31,224,192,.06);color:var(--text);font-size:17px;
  display:grid;place-items:center;
}
.nav-toggle:hover{border-color:var(--line-2);color:var(--brand);}

.page{margin-left:var(--nav-w);position:relative;z-index:1;}

/* ============ 通用板块 ============ */
.sec{padding:88px 0;position:relative;}
.sec-head{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding-bottom:18px;margin-bottom:32px;border-bottom:1px solid var(--line);
}
.sec-title{
  font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;display:flex;align-items:center;
}
.sec-title::before{
  content:"";display:inline-block;width:4px;height:18px;border-radius:2px;
  background:var(--brand);margin-right:12px;box-shadow:0 0 12px rgba(31,224,192,.5);
}
.sec-more{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;font-weight:600;}
.sec-more:hover{color:var(--brand);gap:10px;}
.sec-sub{color:var(--text-2);font-size:15px;margin-top:10px;max-width:640px;}

.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);border:0;
  background:linear-gradient(135deg,#FFC76B,var(--accent));color:#231400;
  font-weight:700;font-size:15px;white-space:nowrap;cursor:pointer;
  box-shadow:0 0 24px rgba(255,176,58,.28),0 8px 24px rgba(0,0,0,.35);
  transition:transform .16s ease-out,filter .16s ease-out;
}
.btn-neon:hover{filter:brightness(1.08);transform:translateY(-2px);color:#231400;}
.btn-neon:active{transform:scale(.99);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  border:1px solid rgba(31,224,192,.45);background:rgba(31,224,192,.06);
  color:var(--brand);font-weight:600;font-size:15px;white-space:nowrap;cursor:pointer;
  transition:.16s ease-out;
}
.btn-ghost:hover{background:rgba(31,224,192,.14);border-color:var(--brand);color:#9BFFF0;}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px;}
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;color:var(--brand);
  background:rgba(31,224,192,.10);border:1px solid rgba(31,224,192,.28);
}
.badge-plain{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--text-2);background:rgba(110,91,255,.12);border:1px solid rgba(110,91,255,.26);
}

/* ============ Hero ============ */
.hero{padding:44px 0 40px;}
.hero-grid{display:grid;grid-template-columns:340px minmax(0,1fr);gap:36px;align-items:stretch;}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:9/16;
  border:1px solid var(--line);box-shadow:var(--shadow-soft);background:var(--ink-800);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.10) 0%,rgba(6,10,20,.20) 42%,rgba(6,10,20,.88) 100%);
}
.hero-media-cap{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
  font-size:13px;color:var(--text-2);letter-spacing:.02em;
}
.hero-media-cap strong{display:block;color:var(--text);font-size:15px;font-weight:700;margin-bottom:4px;}
.hero-card{
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:36px 36px 32px;
  box-shadow:var(--shadow),0 0 0 1px rgba(255,255,255,.04) inset;
  display:flex;flex-direction:column;justify-content:center;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.hero h1{
  font-size:clamp(28px,4.4vw,48px);font-weight:800;line-height:1.15;letter-spacing:-.02em;
  margin-bottom:16px;
}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{color:var(--text-2);font-size:16px;line-height:1.85;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
.stat{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:14px 16px;
}
.stat b{display:block;font-size:15px;font-weight:700;color:var(--text);font-family:var(--mono);letter-spacing:.01em;}
.stat span{font-size:12.5px;color:var(--text-3);}

/* ============ 片段卡带 ============ */
.reel{
  display:flex;gap:16px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.reel::-webkit-scrollbar{display:none;}
.reel-card{
  flex:0 0 280px;scroll-snap-align:start;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  transition:transform .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out;
}
.reel-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-soft);}
.reel-thumb{position:relative;aspect-ratio:9/16;overflow:hidden;background:var(--ink-800);}
.reel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out;}
.reel-card:hover .reel-thumb img{transform:scale(1.04);}
.reel-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;
  background:rgba(6,10,20,.55);border:1px solid rgba(255,255,255,.16);
  color:#fff;font-size:16px;transition:.16s ease-out;
}
.reel-card:hover .reel-play{background:rgba(31,224,192,.9);color:#04121A;border-color:transparent;}
.reel-time{
  position:absolute;right:10px;bottom:10px;height:24px;padding:0 10px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;font-size:12px;font-family:var(--mono);
  background:rgba(6,10,20,.74);color:#EDF3FF;border:1px solid rgba(255,255,255,.12);
}
.reel-body{padding:16px 18px 18px;}
.reel-body h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:10px;}
.reel-tags{display:flex;flex-wrap:wrap;gap:8px;}
.reel-tags span{
  font-size:12px;color:var(--text-2);border:1px solid var(--line);border-radius:var(--r-pill);padding:2px 10px;
}

/* ============ 种草清单 ============ */
.list-row{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:center;
  padding:38px 0;border-bottom:1px solid var(--line);
}
.list-row:nth-child(even){grid-template-columns:300px minmax(0,1fr);}
.list-row:last-child{border-bottom:0;}
.list-row .row-media{border-radius:var(--r-md);overflow:hidden;aspect-ratio:4/3;border:1px solid var(--line);background:var(--ink-800);}
.list-row .row-media img{width:100%;height:100%;object-fit:cover;}
.row-num{
  font-family:var(--mono);font-size:38px;font-weight:300;color:var(--brand);
  line-height:1;letter-spacing:-.03em;margin-bottom:12px;display:block;
}
.list-row h3{font-size:19px;font-weight:600;margin-bottom:12px;}
.list-row p{color:var(--text-2);font-size:15px;line-height:1.85;margin-bottom:16px;}
.check-list li{
  position:relative;padding-left:24px;color:var(--text-2);font-size:14.5px;line-height:1.9;
}
.check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;font-size:11px;
  color:var(--brand);position:absolute;left:0;top:1px;
}
.row-action{margin-top:18px;}

/* ============ 转化条 ============ */
.cta-glass{
  position:relative;border-radius:var(--r-lg);padding:32px 36px;
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--shadow),0 0 0 1px rgba(255,255,255,.05) inset;
  overflow:hidden;
}
.cta-glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,192,.85),rgba(110,91,255,.55),transparent);
}
.cta-glass h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin-bottom:8px;}
.cta-glass p{color:var(--text-2);font-size:14.5px;}

/* ============ 口碑条 ============ */
.review-track{display:flex;gap:16px;overflow-x:auto;padding:6px 4px 18px;scrollbar-width:none;}
.review-track::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 250px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:18px 20px;
  transition:transform .16s ease-out,border-color .16s ease-out;
}
.review-card:hover{transform:translateY(-4px);border-color:var(--line-2);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:38px;height:38px;flex:0 0 38px;border-radius:50%;
  background:linear-gradient(135deg,rgba(31,224,192,.35),rgba(110,91,255,.45));
  display:grid;place-items:center;font-size:13px;font-weight:700;color:#EDF3FF;
}
.review-name{font-size:14px;font-weight:600;}
.stars{color:var(--accent);font-size:11px;letter-spacing:1px;}
.review-text{color:var(--text-2);font-size:14px;line-height:1.75;}

/* ============ 最新信息 ============ */
.news-wrap{min-height:420px;}
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.news-card{
  display:grid;grid-template-columns:180px minmax(0,1fr);gap:18px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px;transition:transform .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-soft);}
.news-thumb{border-radius:var(--r-sm);overflow:hidden;aspect-ratio:4/3;background:var(--ink-800);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{display:flex;flex-direction:column;min-width:0;}
.news-title{
  font-size:16px;font-weight:600;line-height:1.55;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-exc{
  color:var(--text-2);font-size:13.5px;line-height:1.7;margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--text-3);font-family:var(--mono);
}
.news-go{font-family:inherit;font-size:13px;font-weight:600;color:var(--brand);}
.news-empty{
  min-height:420px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line-2);border-radius:var(--r-md);color:var(--text-2);font-size:14.5px;
}
.news-empty i{font-size:30px;color:var(--text-3);}
.news-more{display:flex;justify-content:center;margin-top:32px;}

/* ============ FAQ ============ */
.faq-acc .accordion-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:transparent;color:var(--text);font-size:17px;font-weight:600;
  padding:18px 22px 18px 24px;box-shadow:none;border-left:3px solid transparent;
  transition:background .16s ease-out,color .16s ease-out;
}
.faq-acc .accordion-button:not(.collapsed){
  background:rgba(31,224,192,.08);color:#fff;border-left-color:var(--brand);box-shadow:none;
}
.faq-acc .accordion-button:focus{box-shadow:none;}
.faq-acc .accordion-button::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  background-image:none;width:auto;height:auto;font-size:12px;color:var(--brand);
  transition:transform .2s ease-out;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(180deg);}
.faq-acc .accordion-body{
  color:var(--text-2);font-size:15px;line-height:1.85;padding:0 24px 20px 24px;
}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);background:var(--ink-800);
  padding:64px 0 0;margin-top:24px;position:relative;z-index:1;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:44px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.foot-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:11px;font-size:14px;color:#04121A;display:grid;place-items:center;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--brand-2));}
.foot-brand span{font-size:16px;font-weight:700;}
.foot-desc{color:var(--text-2);font-size:13.5px;line-height:1.85;max-width:320px;}
.foot-title{font-size:14px;font-weight:700;margin-bottom:18px;color:var(--text);}
.foot-list li{margin-bottom:11px;}
.foot-list a{color:var(--text-2);font-size:13.5px;}
.foot-list a:hover{color:var(--brand);}
.sub-form{display:flex;flex-wrap:wrap;gap:10px;}
.form-input{
  flex:1 1 180px;height:44px;padding:0 16px;border-radius:var(--r-sm);
  background:rgba(6,10,20,.7);border:1px solid var(--line);color:var(--text);
  font-size:14px;transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.form-input::placeholder{color:var(--text-3);}
.form-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(31,224,192,.22);}
.sub-form .btn-neon{height:44px;padding:0 22px;font-size:14px;}
.sub-msg{width:100%;font-size:12.5px;color:var(--brand);min-height:18px;margin-top:2px;}
.foot-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:14px;font-size:12.5px;color:var(--text-3);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;color:var(--text-2);font-size:13px;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-pill);
  height:36px;padding:0 16px;cursor:pointer;transition:.16s ease-out;
}
.to-top:hover{border-color:var(--line-2);color:var(--brand);}

/* 移动吸底 CTA */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;height:64px;z-index:1045;
  align-items:center;justify-content:space-between;gap:12px;padding:0 14px;
  background:rgba(10,17,32,.92);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.mobile-cta span{font-size:13px;color:var(--text-2);line-height:1.4;}
.mobile-cta .btn-neon{height:44px;padding:0 20px;font-size:14px;}

.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{opacity:1;transform:none;transition:opacity .4s ease-out,transform .4s ease-out;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-grid{grid-template-columns:300px minmax(0,1fr);gap:28px;}
  .news-card{grid-template-columns:150px minmax(0,1fr);}
}
@media (max-width:991.98px){
  :root{--nav-w:64px;}
  .app-shell.is-open{width:240px;box-shadow:24px 0 48px rgba(0,0,0,.5);}
  .app-shell:hover{width:64px;}
  .app-shell:hover .brand-text,.app-shell:hover .nav-text{opacity:0;transform:translateX(-8px);}
  .app-shell.is-open .brand-text,.app-shell.is-open .nav-text{opacity:1;transform:none;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-media{max-width:420px;}
  .news-grid{grid-template-columns:1fr;}
  .list-row,.list-row:nth-child(even){grid-template-columns:1fr;gap:24px;}
  .list-row .row-media{max-width:460px;}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .sec{padding:72px 0;}
}
@media (max-width:575.98px){
  .topbar{display:flex;}
  .app-shell{width:82vw;max-width:320px;transform:translateX(-100%);transition:transform .25s ease-out;}
  .app-shell:hover{width:82vw;}
  .app-shell.is-open{transform:translateX(0);width:82vw;}
  .app-shell .brand-text,.app-shell .nav-text{opacity:1;transform:none;}
  .app-shell:hover .brand-text,.app-shell:hover .nav-text{opacity:1;transform:none;}
  .page{margin-left:0;padding-top:56px;}
  .container-x{padding:0 16px;}
  .sec{padding:56px 0;}
  .hero{padding:24px 0 16px;}
  .hero-card{padding:24px 20px;border-radius:var(--r-md);}
  .hero h1{font-size:clamp(26px,7.6vw,34px);}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .hero-actions .btn-neon,.hero-actions .btn-ghost{flex:1 1 100%;}
  .reel-card{flex:0 0 78vw;}
  .news-card{grid-template-columns:1fr;padding:14px;}
  .news-thumb{aspect-ratio:16/9;}
  .cta-glass{padding:24px 20px;border-radius:var(--r-md);}
  .cta-glass .btn-neon{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-cta{display:flex;}
  .site-footer{padding-bottom:72px;}
  .review-card{flex:0 0 78vw;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink-900:#060A14;
  --ink-800:#0A1120;
  --ink-700:rgba(16,26,46,.72);
  --ink-solid:#101A2E;
  --brand:#1FE0C0;
  --brand-2:#6E5BFF;
  --accent:#FFB03A;
  --text:#EDF3FF;
  --text-2:#9AA8BE;
  --text-3:#64748B;
  --line:rgba(120,180,255,.14);
  --line-strong:rgba(120,180,255,.26);
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 0 0 1px rgba(31,224,192,.10);
  --sh-glow:0 0 24px rgba(31,224,192,.28);
  --sp:8px;
  --shell-w:76px;
  --shell-w-sm:64px;
  --font: "PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --mono: "SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(31,224,192,.10), transparent 62%),
    radial-gradient(760px 460px at 92% 6%, rgba(110,91,255,.12), transparent 60%),
    linear-gradient(180deg,#060A14 0%,#070c18 60%,#060A14 100%);
  pointer-events:none;
  z-index:-1;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .16s ease-out,border-color .16s ease-out,opacity .16s ease-out;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(31,224,192,.28);}

.container-x{
  width:100%;
  max-width:1140px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){
  .container-x{max-width:1320px;padding-right:48px;}
}

/* ============ 左侧 App Shell ============ */
.app-shell{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--shell-w);
  z-index:1050;
  display:flex;
  flex-direction:column;
  padding:18px 12px 16px;
  background:rgba(10,17,32,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-right:1px solid var(--line);
  box-shadow:1px 0 0 rgba(255,255,255,.03),0 0 0 1px rgba(31,224,192,.06);
  overflow:hidden;
  transition:width .22s ease-out,transform .22s ease-out;
}
.app-shell:hover,
.app-shell:focus-within,
.app-shell.open{width:240px;}
.shell-brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:6px 6px 22px;
  border-bottom:1px solid var(--line);
  margin-bottom:16px;
  white-space:nowrap;
}
.brand-mark{
  flex:0 0 auto;
  width:40px;height:40px;
  border-radius:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:18px;
  letter-spacing:0;
  color:#fff;
  background:linear-gradient(135deg,rgba(31,224,192,.20),rgba(110,91,255,.24));
  border:1px solid rgba(31,224,192,.45);
  box-shadow:var(--sh-2);
}
.brand-word{
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text);
  opacity:0;
  transition:opacity .18s ease-out;
}
.app-shell:hover .brand-word,
.app-shell:focus-within .brand-word,
.app-shell.open .brand-word{opacity:1;}

.nav-list{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  min-height:48px;
  padding:12px 12px;
  border-radius:12px;
  color:var(--text-2);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  border:1px solid transparent;
}
.nav-item i{width:20px;font-size:17px;text-align:center;flex:0 0 auto;}
.nav-text{opacity:0;transition:opacity .18s ease-out;}
.app-shell:hover .nav-text,
.app-shell:focus-within .nav-text,
.app-shell.open .nav-text{opacity:1;}
.nav-item:hover{
  color:var(--text);
  background:rgba(31,224,192,.06);
  border-color:rgba(31,224,192,.18);
}
.nav-item.active{
  color:var(--text);
  background:linear-gradient(90deg,rgba(31,224,192,.14),rgba(110,91,255,.10));
  border-color:rgba(31,224,192,.24);
}
.nav-item.active::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:26px;
  border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.shell-foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:8px;
  white-space:nowrap;
}
.shell-link{
  display:flex;align-items:center;gap:14px;
  min-height:44px;padding:10px 12px;
  border-radius:12px;
  color:var(--text-3);
  font-size:13px;
}
.shell-link i{width:20px;text-align:center;font-size:16px;}
.shell-link span{opacity:0;transition:opacity .18s ease-out;}
.app-shell:hover .shell-link span,
.app-shell:focus-within .shell-link span,
.app-shell.open .shell-link span{opacity:1;}
.shell-link:hover{color:var(--brand);background:rgba(31,224,192,.06);}

.app-main{
  margin-left:var(--shell-w);
  min-height:100vh;
  padding-bottom:0;
}

.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  z-index:1060;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:rgba(10,17,32,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;}
.topbar-brand .brand-mark{width:32px;height:32px;border-radius:9px;font-size:15px;}
.burger{
  width:44px;height:44px;
  border-radius:12px;
  background:rgba(31,224,192,.08);
  border:1px solid rgba(31,224,192,.22);
  color:var(--text);
  font-size:17px;
  cursor:pointer;
}
.burger:hover{background:rgba(31,224,192,.16);}

.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(3,6,12,.66);
  opacity:0;
  visibility:hidden;
  z-index:1040;
  transition:opacity .22s ease-out,visibility .22s ease-out;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ============ 分类页头 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.42;
}
.page-hero-mask{
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,rgba(6,10,20,.86) 0%,rgba(6,10,20,.72) 45%,rgba(6,10,20,.96) 100%),
    radial-gradient(700px 380px at 78% 12%, rgba(110,91,255,.22), transparent 68%);
}
.page-hero .container-x{position:relative;z-index:2;padding-top:34px;padding-bottom:56px;}

.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{opacity:.55;}
.crumb .now{color:var(--text-2);}

.hero-glass{
  max-width:760px;
  padding:28px 28px 26px;
  border-radius:var(--r-lg);
  background:rgba(16,26,46,.10);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(120,180,255,.20);
  border-top-color:rgba(255,255,255,.24);
  border-bottom-color:rgba(10,17,32,.6);
  box-shadow:var(--sh-1),var(--sh-2);
}
.hero-glass h1{
  font-size:clamp(28px,5vw,46px);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.02em;
  margin:14px 0 12px;
}
.hero-sub{font-size:16px;color:var(--text-2);margin:0 0 22px;line-height:1.7;}
.badge-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:rgba(31,224,192,.10);
  border:1px solid rgba(31,224,192,.32);
}
.badge-tag.purple{color:#C7C0FF;background:rgba(110,91,255,.14);border-color:rgba(110,91,255,.34);}
.badge-tag.amber{color:var(--accent);background:rgba(255,176,58,.10);border-color:rgba(255,176,58,.32);}
.badge-tag.gray{color:var(--text-2);background:rgba(120,180,255,.08);border-color:var(--line-strong);}

.stat-row{display:flex;flex-wrap:wrap;gap:12px;}
.stat-badge{
  min-width:112px;
  padding:10px 16px;
  border-radius:var(--r-sm);
  background:rgba(16,26,46,.82);
  border:1px solid var(--line);
}
.stat-badge .num{
  display:block;
  font-family:var(--mono);
  font-size:20px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.02em;
  line-height:1.2;
}
.stat-badge .lab{display:block;font-size:12px;color:var(--text-3);margin-top:4px;}

/* ============ 按钮 ============ */
.btn-neon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 26px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,176,58,.55);
  background:linear-gradient(180deg,#FFC465,#F79A20);
  color:#22160A;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  cursor:pointer;
  box-shadow:0 8px 24px rgba(0,0,0,.35),0 0 22px rgba(255,176,58,.26);
  transition:transform .16s ease-out,filter .16s ease-out,box-shadow .16s ease-out;
}
.btn-neon:hover{color:#22160A;filter:brightness(1.06);}
.btn-neon:active{transform:scale(.99);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-pill);
  border:1px solid rgba(31,224,192,.45);
  background:rgba(31,224,192,.06);
  color:var(--brand);
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:transform .16s ease-out,background .16s ease-out,border-color .16s ease-out;
}
.btn-ghost:hover{background:rgba(31,224,192,.14);color:var(--brand);border-color:rgba(31,224,192,.7);}
.btn-ghost:active{transform:scale(.99);}
.btn-line{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  color:var(--text-2);
  font-size:13px;
  font-weight:600;
  transition:color .16s ease-out,border-color .16s ease-out,background .16s ease-out;
}
.btn-line:hover{color:var(--brand);border-color:rgba(31,224,192,.55);background:rgba(31,224,192,.07);}

/* ============ 主体栅格 ============ */
.section-gap{padding:64px 0;}
@media (min-width:992px){ .section-gap{padding:88px 0;} }
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.sec-title{
  position:relative;
  padding-left:16px;
  font-size:clamp(22px,3vw,30px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;top:.34em;
  width:4px;height:18px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.sec-sub{font-size:14px;color:var(--text-3);margin:10px 0 0;}

.content-sec{
  padding:28px 0 36px;
  border-bottom:1px solid var(--line);
  scroll-margin-top:96px;
}
.content-sec:last-of-type{border-bottom:none;}
.content-sec h2{
  position:relative;
  padding-left:16px;
  font-size:clamp(21px,2.6vw,28px);
  font-weight:700;
  line-height:1.32;
  margin-bottom:14px;
  letter-spacing:-.01em;
}
.content-sec h2::before{
  content:"";
  position:absolute;
  left:0;top:.34em;
  width:4px;height:18px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.content-sec p{font-size:16px;color:var(--text-2);line-height:1.85;}
.sec-index{
  display:inline-block;
  font-family:var(--mono);
  font-size:13px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.14em;
  margin-bottom:10px;
}
.check-list{margin:18px 0 4px;display:grid;gap:12px;}
.check-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.75;
}
.check-list li i{color:var(--brand);font-size:15px;margin-top:6px;flex:0 0 auto;}
.check-list li strong{color:var(--text);font-weight:600;}

.fig{
  margin:26px 0 0;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--ink-solid);
  box-shadow:var(--sh-1);
}
.fig img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;transition:transform .18s ease-out;}
.fig:hover img{transform:scale(1.04);}
.fig figcaption{
  padding:12px 16px;
  font-size:13px;
  color:var(--text-3);
  border-top:1px solid var(--line);
}

.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:22px 0 4px;}
.mini-card{
  padding:20px;
  border-radius:var(--r-sm);
  background:var(--ink-solid);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  transition:transform .16s ease-out,border-color .16s ease-out;
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(31,224,192,.36);}
.mini-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.mini-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0;}
.mini-card .mini-lab{
  display:inline-block;
  font-family:var(--mono);
  font-size:12px;
  color:var(--accent);
  letter-spacing:.1em;
  margin-bottom:8px;
}

/* ============ 侧栏 ============ */
.side-inner{display:flex;flex-direction:column;gap:18px;}
@media (min-width:992px){ .side-inner{position:sticky;top:24px;} }
.side-card{
  padding:22px;
  border-radius:var(--r-md);
  background:var(--ink-solid);
  border:1px solid var(--line);
  box-shadow:var(--sh-1),var(--sh-2);
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand);font-size:15px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  padding:9px 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
}
.toc-list a:hover{background:rgba(31,224,192,.07);color:var(--text);}
.toc-list a.active{
  color:var(--brand);
  background:rgba(31,224,192,.09);
  border-left-color:var(--brand);
  font-weight:600;
}
.link-list{display:flex;flex-direction:column;gap:10px;}
.link-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 14px;
  border-radius:10px;
  background:rgba(120,180,255,.05);
  border:1px solid var(--line);
  font-size:14px;
  color:var(--text-2);
}
.link-list a:hover{color:var(--text);border-color:rgba(31,224,192,.4);background:rgba(31,224,192,.08);}
.link-list a i{color:var(--text-3);font-size:12px;}
.cta-side{
  background:linear-gradient(160deg,rgba(31,224,192,.14),rgba(110,91,255,.14));
  border-color:rgba(31,224,192,.30);
}
.cta-side p{font-size:14px;color:var(--text-2);line-height:1.75;}
.cta-side .btn-neon{width:100%;margin-top:6px;}

/* ============ 步进流程 ============ */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:8px;}
.step-card{
  position:relative;
  padding:22px 20px;
  border-radius:var(--r-md);
  background:var(--ink-solid);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  transition:transform .16s ease-out,border-color .16s ease-out;
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(110,91,255,.42);}
.step-card .step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:32px;height:32px;
  border-radius:10px;
  font-family:var(--mono);
  font-size:14px;
  font-weight:700;
  color:var(--brand);
  background:rgba(31,224,192,.10);
  border:1px solid rgba(31,224,192,.30);
  margin-bottom:12px;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0;}

/* ============ FAQ ============ */
.faq-wrap{border-top:1px solid var(--line);padding-top:48px;}
.accordion-item{
  background:transparent;
  border:none;
  border-bottom:1px solid var(--line);
}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  padding:18px 44px 18px 18px;
  border-radius:0;
  box-shadow:none;
  position:relative;
}
.accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:20px;
  border-radius:2px;
  background:var(--brand);
  opacity:.85;
}
.accordion-button:not(.collapsed){color:var(--brand);background:rgba(31,224,192,.07);}
.accordion-button:not(.collapsed)::before{background:linear-gradient(180deg,var(--brand),var(--brand-2));}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  background-image:none;
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  color:var(--text-3);
  width:auto;height:auto;
  transform:none;
  position:absolute;
  right:18px;top:50%;
  margin-top:-8px;
  transition:transform .2s ease-out,color .2s ease-out;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand);}
.accordion-body{
  padding:0 22px 20px 18px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ 通栏 CTA ============ */
.cta-band{
  position:relative;
  margin:24px 0 0;
  padding:34px 32px;
  border-radius:var(--r-lg);
  background:rgba(16,26,46,.10);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(120,180,255,.22);
  border-top-color:rgba(255,255,255,.26);
  overflow:hidden;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-70px;top:-70px;
  width:240px;height:240px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,224,192,.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-2);margin:0;max-width:620px;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;
  padding:56px 0 22px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,17,32,.35),rgba(6,10,20,.9));
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:34px;
}
.foot-brand{display:flex;align-items:center;gap:12px;font-size:16px;font-weight:700;margin-bottom:14px;}
.foot-desc{font-size:14px;color:var(--text-3);line-height:1.8;margin:0;}
.foot-title{font-size:15px;font-weight:700;margin-bottom:14px;}
.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list a{font-size:14px;color:var(--text-2);}
.foot-list a:hover{color:var(--brand);}
.sub-form{display:flex;flex-direction:column;gap:12px;}
.form-input{
  min-height:46px;
  padding:0 16px;
  border-radius:12px;
  background:rgba(6,10,20,.85);
  border:1px solid var(--line-strong);
  color:var(--text);
  font-size:14px;
  font-family:inherit;
  transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.form-input::placeholder{color:var(--text-3);}
.form-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(31,224,192,.28);}
.sub-msg{font-size:13px;margin:0;min-height:18px;color:var(--text-3);}
.sub-msg.ok{color:var(--brand);}
.sub-msg.err{color:var(--accent);}
.foot-bottom{
  margin-top:40px;
  padding-top:18px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:13px;
  color:var(--text-3);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:rgba(31,224,192,.08);
  border:1px solid rgba(31,224,192,.28);
  color:var(--text-2);
  font-size:13px;
  cursor:pointer;
  transition:color .16s ease-out,background .16s ease-out;
}
.to-top:hover{color:var(--brand);background:rgba(31,224,192,.16);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .foot-grid > div:last-child{grid-column:1 / -1;max-width:460px;}
}
@media (max-width:991px){
  .app-shell{width:var(--shell-w-sm);}
  .app-shell:hover,
  .app-shell:focus-within{width:var(--shell-w-sm);}
  .app-shell.open{width:240px;box-shadow:14px 0 40px rgba(0,0,0,.55);}
  .app-main{margin-left:var(--shell-w-sm);}
  .hero-glass{padding:22px;}
  .mini-grid{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:1fr;}
  .section-gap{padding:72px 0;}
  .cta-band{padding:26px 22px;}
}
@media (max-width:767px){
  .foot-grid{grid-template-columns:1fr 1fr;}
  .foot-grid > div:first-child{grid-column:1 / -1;}
}
@media (max-width:575px){
  body{font-size:15px;}
  .topbar{display:flex;}
  .app-shell{
    width:82vw;
    max-width:320px;
    transform:translateX(-100%);
    padding-top:20px;
  }
  .app-shell.open{transform:translateX(0);width:82vw;}
  .app-shell:hover,
  .app-shell:focus-within{width:82vw;}
  .app-shell .brand-word,
  .app-shell .nav-text,
  .app-shell .shell-link span{opacity:1;}
  .app-main{margin-left:0;padding-top:56px;}
  .page-hero .container-x{padding-top:22px;padding-bottom:40px;}
  .hero-glass{padding:20px 18px;border-radius:18px;}
  .stat-row{gap:10px;}
  .stat-badge{flex:1 1 calc(50% - 5px);min-width:0;padding:10px 12px;}
  .section-gap{padding:56px 0;}
  .container-x{padding:0 16px;}
  .cta-band{padding:22px 18px;border-radius:18px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-neon,
  .cta-actions .btn-ghost{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{margin-top:64px;padding-top:40px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink-900:#060A14;
  --ink-800:#0A1120;
  --ink-700:rgba(16,26,46,.72);
  --surface:#0E1729;
  --surface-2:#111C31;
  --brand:#1FE0C0;
  --brand-2:#6E5BFF;
  --accent:#FFB03A;
  --text:#EDF3FF;
  --text-2:#9AA8BE;
  --text-3:#64748B;
  --line:rgba(120,180,255,.14);
  --line-strong:rgba(120,180,255,.26);
  --r-xs:10px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-brand:0 0 0 1px rgba(31,224,192,.10);
  --sh-glow:0 0 24px rgba(31,224,192,.28);
  --sp:8px;
  --shell-w:76px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"SF Mono",ui-monospace,"JetBrains Mono","Roboto Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:
    radial-gradient(1100px 620px at 88% -12%, rgba(110,91,255,.16), transparent 62%),
    radial-gradient(900px 560px at 6% 6%, rgba(31,224,192,.10), transparent 60%),
    var(--ink-900);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  min-height:100vh;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
::selection{background:rgba(31,224,192,.3);color:#02120E;}
.container-x{width:100%;max-width:1140px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.container-x{max-width:1320px;}}

/* ============ App Shell 导航 ============ */
.app-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell-w);z-index:80;
  display:flex;flex-direction:column;
  padding:18px 12px;
  background:rgba(10,17,32,.78);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-right:1px solid var(--line);
  box-shadow:inset -1px 0 0 rgba(255,255,255,.05);
  transition:width .24s ease-out;
  overflow:hidden;
}
.app-shell:hover,.app-shell.open{width:240px;}
.shell-bar{display:flex;align-items:center;gap:12px;min-height:44px;flex:0 0 auto;}
.shell-brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  display:grid;place-items:center;
  font-weight:800;font-size:18px;color:var(--brand);
  background:
    linear-gradient(160deg,rgba(31,224,192,.16),rgba(110,91,255,.16)) padding-box,
    linear-gradient(135deg,var(--brand),var(--brand-2)) border-box;
  border:1px solid transparent;
}
.brand-name{
  font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;
  max-width:0;opacity:0;overflow:hidden;
  transition:max-width .24s ease-out,opacity .2s ease-out;
}
.app-shell:hover .brand-name,.app-shell.open .brand-name{max-width:190px;opacity:1;}
.shell-toggle{
  display:none;width:44px;height:44px;flex:0 0 44px;
  align-items:center;justify-content:center;
  border-radius:var(--r-sm);border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--text);cursor:pointer;
}
.shell-body{display:flex;flex-direction:column;flex:1 1 auto;min-height:0;margin-top:22px;}
.nav-list{display:flex;flex-direction:column;gap:6px;flex:1 1 auto;overflow-y:auto;overflow-x:hidden;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:14px;
  padding:12px 15px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:14.5px;font-weight:600;
  transition:background .16s ease-out,color .16s ease-out,transform .16s ease-out;
  flex:0 0 auto;
}
.nav-item i{font-size:18px;width:20px;flex:0 0 20px;text-align:center;line-height:1;}
.nav-text{
  white-space:nowrap;max-width:0;opacity:0;overflow:hidden;
  transition:max-width .24s ease-out,opacity .2s ease-out;
}
.app-shell:hover .nav-text,.app-shell.open .nav-text{max-width:180px;opacity:1;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text);}
.nav-item.active{
  background:linear-gradient(90deg,rgba(31,224,192,.14),rgba(31,224,192,.03));
  color:var(--text);
  box-shadow:inset 0 0 0 1px rgba(31,224,192,.18);
}
.nav-item.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:3px;background:var(--brand);box-shadow:0 0 12px rgba(31,224,192,.6);
}
.nav-item.active i{color:var(--brand);}
.shell-foot{flex:0 0 auto;padding-top:16px;margin-top:16px;border-top:1px solid var(--line);}
.shell-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--accent),#FF9A18);
  color:#221200;font-weight:700;font-size:14px;white-space:nowrap;
  box-shadow:0 8px 20px rgba(255,176,58,.22);
  transition:filter .16s ease-out,transform .16s ease-out;
}
.shell-cta:hover{filter:brightness(1.08);}
.shell-cta:active{transform:scale(.99);}
.shell-copy{
  margin:12px 0 0;font-size:11.5px;color:var(--text-3);white-space:nowrap;
  max-width:0;opacity:0;overflow:hidden;transition:max-width .24s ease-out,opacity .2s ease-out;
}
.app-shell:hover .shell-copy,.app-shell.open .shell-copy{max-width:200px;opacity:1;}
.shell-scrim{
  position:fixed;inset:0;background:rgba(3,6,14,.6);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s;
}
.shell-scrim.show{opacity:1;visibility:visible;}

/* ============ 主区域 ============ */
.site-main{
  padding-left:var(--shell-w);
  padding-top:34px;
  padding-bottom:104px;
}

/* 面包屑 */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:26px;}
.crumbs a{color:var(--text-2);transition:color .16s ease-out;}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--text-3);opacity:.6;}
.crumbs .cur{
  color:var(--text);max-width:46vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* 文章布局 */
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:56px;justify-content:center;}
@media (min-width:1200px){
  .article-grid{grid-template-columns:minmax(0,820px) 256px;}
}
.article-main{min-width:0;max-width:820px;}

/* 文章头 */
.article-head{padding-bottom:28px;border-bottom:1px solid var(--line);margin-bottom:36px;}
.head-badges{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 13px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;color:var(--brand);
  background:rgba(31,224,192,.10);
  border:1px solid rgba(31,224,192,.30);
}
.badge-solid{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 13px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;color:#E7E3FF;
  background:linear-gradient(135deg,rgba(110,91,255,.32),rgba(110,91,255,.12));
  border:1px solid rgba(110,91,255,.45);
}
.article-head h1{
  font-size:clamp(27px,4.2vw,42px);
  font-weight:800;line-height:1.22;letter-spacing:-.02em;
  margin:0 0 18px;color:#fff;
}
.head-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:13.5px;color:var(--text-2);}
.head-meta span{display:inline-flex;align-items:center;gap:7px;}
.head-meta i{color:var(--brand);font-size:13px;}
.head-meta .num{font-family:var(--font-num);letter-spacing:.02em;color:var(--text);}

/* 文章配图 */
.head-cover{
  margin:28px 0 0;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-1),var(--sh-brand);
  aspect-ratio:16/9;background:var(--surface);
}
.head-cover img{width:100%;height:100%;object-fit:cover;}

/* 正文 */
.article-body{font-size:16.5px;line-height:1.85;color:#D6DEEC;word-wrap:break-word;}
.article-body p{margin:0 0 22px;}
.article-body h2{
  position:relative;font-size:clamp(21px,2.6vw,25px);font-weight:700;color:#fff;
  line-height:1.4;margin:46px 0 16px;padding-left:15px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;width:4px;height:18px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(31,224,192,.5);
}
.article-body h3{font-size:19px;font-weight:600;color:#fff;margin:32px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px;}
.article-body li{margin-bottom:10px;}
.article-body li::marker{color:var(--brand);}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(31,224,192,.35);transition:color .16s;}
.article-body a:hover{color:#7BF5E2;}
.article-body img{border-radius:var(--r-md);margin:26px 0;height:auto;border:1px solid var(--line);}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;color:var(--text-2);
  border-left:3px solid var(--brand-2);border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:rgba(110,91,255,.08);
}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:rgba(255,255,255,.04);color:#fff;font-weight:600;}
.article-body code{
  font-family:var(--font-num);font-size:14px;padding:2px 7px;border-radius:6px;
  background:rgba(31,224,192,.10);color:#8FF4E2;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:38px 0;}

/* 目录 sticky */
.toc-col{display:none;}
@media (min-width:1200px){.toc-col{display:block;}}
.toc-card{
  position:sticky;top:26px;
  padding:20px;border-radius:var(--r-md);
  background:rgba(14,23,41,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
.toc-card h4{
  margin:0 0 14px;font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--text-3);text-transform:uppercase;
}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:3px;max-height:56vh;overflow-y:auto;}
.toc-list a{
  display:block;padding:7px 10px;border-left:2px solid transparent;
  font-size:13.5px;line-height:1.5;color:var(--text-2);
  border-radius:0 8px 8px 0;transition:color .16s,background .16s,border-color .16s;
}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.toc-list a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(31,224,192,.08);}
.toc-list a.lv3{padding-left:22px;font-size:13px;}
.toc-empty{font-size:13px;color:var(--text-3);margin:0;}

/* 空态 */
.empty-box{
  padding:52px 26px;text-align:center;border-radius:var(--r-md);
  background:var(--surface);border:1px dashed var(--line-strong);
}
.empty-box i{font-size:30px;color:var(--text-3);}
.empty-box h2{margin:16px 0 8px;font-size:20px;font-weight:700;color:#fff;}
.empty-box p{margin:0 0 20px;color:var(--text-2);font-size:14.5px;}

/* 文末 */
.article-foot{margin-top:52px;padding-top:30px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:26px;}
.tag-row .label{font-size:13px;color:var(--text-3);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);
  border:1px solid var(--line);transition:color .16s,border-color .16s,transform .16s;
}
.tag:hover{color:var(--brand);border-color:rgba(31,224,192,.4);transform:translateY(-2px);}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.share-label{font-size:13.5px;color:var(--text-3);}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text-2);
  font-size:13.5px;font-weight:600;cursor:pointer;
  transition:color .16s,border-color .16s,background .16s,transform .16s;
}
.share-btn:hover{color:var(--brand);border-color:rgba(31,224,192,.45);background:rgba(31,224,192,.08);}
.share-btn:active{transform:scale(.98);}
.share-tip{font-size:13px;color:var(--brand);min-height:20px;}

/* 上下篇 */
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:30px;}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr;}}
.post-card{
  display:block;padding:20px 22px;border-radius:var(--r-md);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .16s ease-out,border-color .16s,box-shadow .16s;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-1),var(--sh-brand);}
.post-card .dir{font-size:12.5px;color:var(--text-3);display:flex;align-items:center;gap:8px;margin-bottom:10px;}
.post-card .dir i{color:var(--brand);}
.post-card h3{margin:0;font-size:16px;font-weight:600;color:var(--text);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover h3{color:#fff;}

/* 相关内容 */
.related{margin-top:84px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.sec-head h2{
  position:relative;margin:0;padding-left:15px;
  font-size:clamp(21px,2.6vw,28px);font-weight:700;color:#fff;line-height:1.3;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:8px;width:4px;height:18px;border-radius:2px;background:var(--brand);
}
.sec-head .more{font-size:13.5px;font-weight:600;color:var(--text-2);transition:color .16s;}
.sec-head .more:hover{color:var(--brand);}
.rel-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:576px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1200px){.rel-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-md);background:var(--surface);border:1px solid var(--line);
  transition:transform .16s ease-out,border-color .16s,box-shadow .16s;
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-1),var(--sh-brand);}
.rel-thumb{aspect-ratio:4/3;overflow:hidden;background:var(--surface-2);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rel-body .badge-cat{align-self:flex-start;height:24px;font-size:12px;padding:0 10px;}
.rel-body h3{
  margin:0;font-size:15.5px;font-weight:600;line-height:1.6;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-meta{margin-top:auto;font-size:12.5px;color:var(--text-3);display:flex;align-items:center;gap:8px;}
.rel-meta .num{font-family:var(--font-num);color:var(--text-2);}

/* 通栏 CTA */
.cta-band{
  margin-top:72px;padding:34px 32px;border-radius:var(--r-lg);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  background:linear-gradient(120deg,rgba(31,224,192,.10),rgba(110,91,255,.10));
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:0 -1px 0 rgba(255,255,255,.10) inset,var(--sh-1);
}
.cta-band h2{margin:0 0 8px;font-size:clamp(20px,2.4vw,26px);font-weight:700;color:#fff;}
.cta-band p{margin:0;font-size:14.5px;color:var(--text-2);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);border:0;cursor:pointer;
  background:linear-gradient(135deg,var(--accent),#FF9A18);
  color:#221200;font-size:15px;font-weight:700;
  box-shadow:0 10px 26px rgba(255,176,58,.26);
  transition:filter .16s ease-out,transform .16s ease-out;
}
.btn-neon:hover{filter:brightness(1.08);}
.btn-neon:active{transform:scale(.99);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.03);color:var(--text);
  border:1px solid rgba(31,224,192,.42);font-size:15px;font-weight:600;
  transition:background .16s,color .16s,border-color .16s,transform .16s;
}
.btn-ghost:hover{background:rgba(31,224,192,.10);color:#8FF4E2;border-color:var(--brand);}
.btn-ghost:active{transform:scale(.99);}

/* 吸底转化条（移动端） */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:75;
  display:none;align-items:center;justify-content:space-between;gap:14px;
  height:64px;padding:0 16px;
  background:rgba(10,17,32,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  box-shadow:0 -1px 0 rgba(255,255,255,.08) inset;
}
.sticky-cta p{margin:0;font-size:12.5px;color:var(--text-2);line-height:1.35;}
.sticky-cta p strong{display:block;color:var(--text);font-size:13.5px;font-weight:700;}
.sticky-cta .btn-neon{height:42px;padding:0 20px;font-size:13.5px;flex:0 0 auto;}
@media (max-width:575.98px){.sticky-cta{display:flex;}}

/* ============ 页脚 ============ */
.site-footer{
  margin-left:var(--shell-w);
  margin-top:40px;padding:56px 0 28px;
  background:linear-gradient(180deg,rgba(10,17,32,.9),rgba(6,10,20,.98));
  border-top:1px solid var(--line);
}
.foot-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:768px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:32px;}}
.foot-brand{display:flex;align-items:center;gap:12px;font-size:15.5px;font-weight:700;color:#fff;margin-bottom:14px;}
.foot-desc{margin:0;font-size:13.5px;line-height:1.8;color:var(--text-2);max-width:340px;}
.foot-title{margin:0 0 16px;font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;}
.foot-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;}
.foot-list a{font-size:13.5px;color:var(--text-2);transition:color .16s ease-out;}
.foot-list a:hover{color:var(--brand);}
.sub-form{display:flex;flex-direction:column;gap:12px;}
.form-input{
  width:100%;height:46px;padding:0 16px;border-radius:var(--r-sm);
  background:var(--ink-800);border:1px solid var(--line);color:var(--text);
  font-size:14px;transition:border-color .16s,box-shadow .16s;
}
.form-input::placeholder{color:var(--text-3);}
.form-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(31,224,192,.22);}
.sub-form .btn-neon{height:44px;font-size:14px;padding:0 20px;}
.sub-msg{margin:0;font-size:12.5px;color:var(--brand);min-height:18px;}
.sub-msg.err{color:var(--accent);}
.foot-bottom{
  margin-top:42px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:12.5px;color:var(--text-3);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text-2);font-size:12.5px;cursor:pointer;
  transition:color .16s,border-color .16s,background .16s;
}
.to-top:hover{color:var(--brand);border-color:rgba(31,224,192,.45);background:rgba(31,224,192,.08);}

/* 入场动画 */
.fade-up{opacity:0;transform:translateY(12px);animation:fadeUp .42s ease-out forwards;}
@keyframes fadeUp{to{opacity:1;transform:translateY(0);}}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .fade-up{opacity:1;transform:none;}
}

/* 平板 576-991 */
@media (min-width:576px) and (max-width:991.98px){
  .app-shell{width:64px;padding:16px 10px;}
  .app-shell:hover,.app-shell.open{width:240px;}
  .site-main{padding-left:64px;}
  .site-footer{margin-left:64px;}
}

/* 移动端 <576 */
@media (max-width:575.98px){
  .app-shell{
    width:100% !important;height:56px;bottom:auto;right:0;
    flex-direction:row;align-items:center;gap:10px;
    padding:0 14px;border-right:0;border-bottom:1px solid var(--line);
    overflow:visible;
  }
  .app-shell:hover,.app-shell.open{width:100% !important;}
  .shell-bar{min-height:56px;gap:10px;flex:1 1 auto;}
  .shell-toggle{display:inline-flex;order:-1;width:44px;height:44px;}
  .brand-name{max-width:190px !important;opacity:1 !important;font-size:14.5px;}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:16px;}
  .shell-body{
    position:fixed;top:56px;left:0;bottom:0;width:82vw;max-width:320px;
    margin-top:0;padding:18px 14px;z-index:79;
    background:rgba(8,13,26,.98);
    border-right:1px solid var(--line);
    transform:translateX(-104%);
    transition:transform .26s ease-out;
    display:flex;flex-direction:column;
  }
  .app-shell.open .shell-body{transform:translateX(0);}
  .nav-list{flex:1 1 auto;}
  .nav-text{max-width:180px !important;opacity:1 !important;font-size:15px;}
  .nav-item{padding:14px 14px;min-height:48px;}
  .nav-item.active::before{left:-14px;}
  .shell-copy{max-width:200px !important;opacity:1 !important;}
  .shell-cta{height:46px;}
  .site-main{padding-left:0;padding-top:84px;padding-bottom:132px;}
  .site-footer{margin-left:0;padding-bottom:96px;}
  .crumbs{font-size:13px;}
  .crumbs .cur{max-width:60vw;}
  .article-body{font-size:15.5px;line-height:1.85;}
  .head-meta{gap:14px;font-size:13px;}
  .cta-band{padding:26px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-neon,.cta-actions .btn-ghost{width:100%;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category2 */
:root{
  --ink-900:#060A14;
  --ink-850:#080E1A;
  --ink-800:#0A1120;
  --ink-700:rgba(16,26,46,.72);
  --brand:#1FE0C0;
  --brand-2:#6E5BFF;
  --accent:#FFB03A;
  --text:#EDF3FF;
  --text-2:#9AA8BE;
  --text-3:#64748B;
  --line:rgba(120,180,255,.14);
  --line-strong:rgba(120,180,255,.26);
  --r-pill:999px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35),0 0 0 1px rgba(31,224,192,.10);
  --shadow-2:0 18px 48px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(31,224,192,.28);
  --shell-w:76px;
  --shell-exp:240px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
@media (max-width:991.98px){
  :root{--shell-w:64px;--shell-exp:240px;}
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-left:var(--shell-w);
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--text);text-decoration:none;transition:color .16s ease-out;}
a:hover{color:var(--brand);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{list-style:none;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(31,224,192,.28);color:#fff;}

/* ---------- 容器 ---------- */
.container-x{
  width:100%;
  max-width:1140px;
  margin:0 auto;
  padding-left:28px;
  padding-right:48px;
}
@media (min-width:1400px){.container-x{max-width:1320px;}}
@media (max-width:991.98px){.container-x{padding-left:24px;padding-right:24px;}}

/* ---------- App Shell 导航 ---------- */
.shell-topbar{
  display:none;
  position:fixed;
  left:0;right:0;top:0;
  height:56px;
  z-index:1060;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:rgba(8,14,26,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;}
.hamburger{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line-strong);
  background:rgba(120,180,255,.06);
  color:var(--text);
  font-size:18px;
  cursor:pointer;
  transition:border-color .16s ease-out,color .16s ease-out;
}
.hamburger:hover{border-color:var(--brand);color:var(--brand);}

.app-shell{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--shell-w);
  z-index:1050;
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:18px 12px 18px;
  background:rgba(10,17,32,.84);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-right:1px solid var(--line);
  box-shadow:1px 0 0 rgba(255,255,255,.03) inset;
  overflow:hidden;
  transition:width .26s ease-out,transform .3s ease-out;
}
.shell-brand{
  display:flex;
  align-items:center;
  gap:12px;
  height:56px;
  margin-bottom:10px;
  flex:0 0 auto;
  white-space:nowrap;
}
.brand-mark{
  flex:0 0 40px;
  width:40px;height:40px;
  border-radius:var(--r-sm);
  display:grid;place-items:center;
  font-weight:800;
  font-size:18px;
  color:var(--text);
  background:linear-gradient(135deg,rgba(31,224,192,.20),rgba(110,91,255,.26));
  border:1px solid rgba(31,224,192,.45);
  box-shadow:0 0 18px rgba(31,224,192,.18);
}
.brand-name{font-size:15px;font-weight:700;letter-spacing:.01em;}

.nav-list{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:16px;
  height:48px;
  padding:0 12px;
  border-radius:var(--r-sm);
  color:var(--text-2);
  font-size:15px;
  white-space:nowrap;
  transition:background .16s ease-out,color .16s ease-out;
}
.nav-item i{width:22px;font-size:18px;text-align:center;flex:0 0 22px;}
.nav-item::before{
  content:"";
  position:absolute;
  left:-12px;top:11px;bottom:11px;
  width:3px;
  border-radius:3px;
  background:transparent;
  transition:background .16s ease-out,box-shadow .16s ease-out;
}
.nav-item:hover{background:rgba(120,180,255,.08);color:var(--text);}
.nav-item.active{
  background:rgba(31,224,192,.10);
  color:var(--text);
  font-weight:600;
}
.nav-item.active::before{background:var(--brand);box-shadow:0 0 12px rgba(31,224,192,.6);}
.nav-text{opacity:0;transform:translateX(-6px);transition:opacity .2s ease-out,transform .2s ease-out;}
.shell-toggle{
  margin-top:auto;
  display:flex;
  align-items:center;
  gap:16px;
  height:44px;
  padding:0 12px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--text-2);
  font-size:14px;
  white-space:nowrap;
  cursor:pointer;
  transition:border-color .16s ease-out,color .16s ease-out;
}
.shell-toggle i{width:22px;text-align:center;font-size:15px;flex:0 0 22px;}
.shell-toggle:hover{border-color:var(--brand);color:var(--brand);}
.app-shell:hover,
.app-shell.is-open{width:var(--shell-exp);}
.app-shell:hover .nav-text,
.app-shell.is-open .nav-text{opacity:1;transform:none;}

.nav-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(4,7,15,.6);
  z-index:1040;
}
.nav-mask.show{display:block;}

@media (max-width:575.98px){
  body{padding-left:0;padding-top:56px;}
  .shell-topbar{display:flex;}
  .app-shell{
    width:82vw;
    max-width:320px;
    padding-top:20px;
    transform:translateX(-105%);
    background:rgba(8,14,26,.97);
  }
  .app-shell:hover{width:82vw;}
  .app-shell.is-open{transform:none;width:82vw;box-shadow:var(--shadow-2);}
  .app-shell .nav-text{opacity:1;transform:none;}
  .shell-toggle{display:none;}
  .nav-item{height:50px;}
}

/* ---------- 通用标题与文本 ---------- */
.h1-x{
  font-size:clamp(28px,5vw,52px);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.02em;
  margin:0 0 18px;
}
.sec-title{
  position:relative;
  padding-left:18px;
  font-size:clamp(24px,3.2vw,32px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;top:.3em;
  width:4px;height:18px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(31,224,192,.5);
}
.sub-title{font-size:18px;font-weight:600;line-height:1.4;}
.lead-p{font-size:16px;line-height:1.85;color:var(--text-2);}
.mini-p{font-size:14px;line-height:1.75;color:var(--text-2);}
.mono-num{font-variant-numeric:tabular-nums;}

/* ---------- 徽章 / 标签 / 按钮 ---------- */
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 15px;
  border-radius:var(--r-pill);
  border:1px solid rgba(31,224,192,.35);
  background:rgba(31,224,192,.10);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(120,180,255,.06);
  color:var(--text-2);
  font-size:12px;
  line-height:1.6;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

.btn-neon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border:0;
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,#FFC163,#FFB03A);
  color:#2A1A02;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:transform .16s ease-out,box-shadow .16s ease-out,filter .16s ease-out;
  box-shadow:0 8px 24px rgba(0,0,0,.35),0 0 22px rgba(255,176,58,.22);
}
.btn-neon:hover{color:#2A1A02;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,0,0,.4),0 0 28px rgba(255,176,58,.34);}
.btn-neon:active{transform:scale(.99);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-pill);
  border:1px solid rgba(31,224,192,.45);
  background:transparent;
  color:var(--brand);
  font-size:15px;
  font-weight:600;
  transition:background .16s ease-out,box-shadow .16s ease-out,transform .16s ease-out;
}
.btn-ghost:hover{background:rgba(31,224,192,.10);color:var(--brand);box-shadow:var(--glow);transform:translateY(-2px);}
.btn-ghost:active{transform:scale(.99);}
.btn-line{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  color:var(--text-2);
  font-size:13px;
  transition:border-color .16s ease-out,color .16s ease-out,transform .16s ease-out;
}
.btn-line:hover{border-color:rgba(31,224,192,.55);color:var(--brand);transform:translateY(-2px);}
.head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ---------- 分类页头 ---------- */
.cat-hero{
  position:relative;
  padding:80px 0 76px;
  background-image:linear-gradient(180deg,rgba(6,10,20,.74),rgba(6,10,20,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-bottom:24px;
  font-size:13px;
  color:var(--text-3);
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{opacity:.6;}
.cat-hero p.lead-p{max-width:560px;}
.portrait-shot{
  margin:0 auto;
  max-width:320px;
  aspect-ratio:9/16;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  background:var(--ink-800);
}
.portrait-shot img{width:100%;height:100%;object-fit:cover;}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;
  top:0;
  z-index:1035;
  background:rgba(6,10,20,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-top:1px solid rgba(255,255,255,.05);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{
  display:flex;
  gap:12px;
  overflow-x:auto;
  padding-top:14px;
  padding-bottom:14px;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none;}
.pill{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(120,180,255,.05);
  color:var(--text-2);
  font-size:14px;
  white-space:nowrap;
  transition:background .16s ease-out,color .16s ease-out,border-color .16s ease-out;
}
.pill:hover{color:var(--text);border-color:rgba(31,224,192,.5);}
.pill.active{
  background:rgba(31,224,192,.14);
  border-color:rgba(31,224,192,.55);
  color:var(--brand);
  font-weight:600;
}
@media (max-width:575.98px){
  .anchor-bar{top:56px;}
}

/* ---------- 分节 ---------- */
.sec-block{
  padding:76px 0;
  border-top:1px solid var(--line);
  scroll-margin-top:86px;
}
.sec-block:first-of-type{border-top:0;}
.sec-head{display:flex;align-items:flex-start;gap:20px;margin-bottom:34px;}
.sec-no{
  font-size:clamp(40px,6vw,68px);
  font-weight:200;
  line-height:1;
  letter-spacing:-.03em;
  color:rgba(31,224,192,.34);
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}
.sec-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  background:var(--ink-800);
  aspect-ratio:4/3;
}
.sec-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out;}
.sec-media:hover img{transform:scale(1.04);}
.sec-media.wide{aspect-ratio:16/9;}
@media (max-width:575.98px){
  .sec-block{padding:56px 0;scroll-margin-top:130px;}
  .sec-head{gap:14px;margin-bottom:24px;}
}

/* ---------- 列表与要点块 ---------- */
.tick-list{display:flex;flex-direction:column;gap:10px;margin-top:20px;}
.tick-list li{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--text-2);}
.tick-list li i{color:var(--brand);font-size:13px;margin-top:6px;flex:0 0 14px;}

.key-card{
  display:flex;
  align-items:flex-start;
  gap:18px;
  margin-top:26px;
  padding:20px 22px;
  border-radius:var(--r-md);
  background:var(--ink-800);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
}
.key-num{
  font-size:24px;
  font-weight:700;
  line-height:1.2;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}
.key-card .k-title{font-size:15px;font-weight:700;margin-bottom:6px;color:var(--text);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:34px;margin-top:8px;}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;top:8px;bottom:8px;
  width:2px;
  background:linear-gradient(180deg,rgba(31,224,192,.55),rgba(110,91,255,.4),rgba(110,91,255,0));
}
.tl-item{position:relative;padding-bottom:30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-34px;top:6px;
  width:18px;height:18px;
  border-radius:50%;
  background:var(--ink-900);
  border:2px solid var(--brand);
  box-shadow:0 0 12px rgba(31,224,192,.4);
}
.tl-step{font-size:12px;letter-spacing:.08em;color:var(--text-3);text-transform:uppercase;}
.tl-item h3{font-size:18px;font-weight:600;margin:4px 0 6px;}

/* ---------- 互链卡 ---------- */
.link-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.link-card{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:26px;
  border-radius:var(--r-lg);
  background:var(--ink-700);
  border:1px solid var(--line);
  transition:transform .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out;
}
.link-card:hover{transform:translateY(-4px);border-color:rgba(31,224,192,.42);box-shadow:var(--shadow-1);color:var(--text);}
.link-card h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.link-card p{font-size:14px;line-height:1.7;color:var(--text-2);}
.link-card .arrow{
  flex:0 0 44px;
  width:44px;height:44px;
  border-radius:50%;
  display:grid;place-items:center;
  border:1px solid rgba(31,224,192,.4);
  color:var(--brand);
  transition:background .16s ease-out,transform .16s ease-out;
}
.link-card:hover .arrow{background:rgba(31,224,192,.12);transform:translateX(4px);}
@media (max-width:767.98px){.link-cards{grid-template-columns:1fr;}}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:20px;
  padding:64px 0 24px;
  background:var(--ink-800);
  border-top:1px solid var(--line);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;font-size:17px;font-weight:700;}
.foot-desc{font-size:14px;line-height:1.8;color:var(--text-2);max-width:340px;}
.foot-title{font-size:15px;font-weight:700;margin:0 0 16px;color:var(--text);}
.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list a{font-size:14px;color:var(--text-2);}
.foot-list a:hover{color:var(--brand);}
.sub-form{display:flex;flex-direction:column;gap:10px;}
.form-input{
  height:46px;
  padding:0 16px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-strong);
  background:#0C1424;
  color:var(--text);
  font-size:15px;
  transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.form-input::placeholder{color:var(--text-3);}
.form-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(31,224,192,.18);}
.sub-msg{font-size:13px;line-height:1.6;color:var(--brand);min-height:20px;}
.sub-msg.is-error{color:var(--accent);}
.foot-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--text-2);
  font-size:13px;
  cursor:pointer;
  transition:border-color .16s ease-out,color .16s ease-out,transform .16s ease-out;
}
.to-top:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
@media (max-width:991.98px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}

/* ---------- 动效 ---------- */
@keyframes rise{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:none;}}
.reveal{animation:rise .45s ease-out both;}
.reveal-d1{animation-delay:.08s;}
.reveal-d2{animation-delay:.16s;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}