/* roulang page: index */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --primary:#2FE0C0;
  --primary-2:#23C8E8;
  --accent:#FF8A3D;
  --surface:rgba(20,32,52,.72);
  --line:rgba(140,200,255,.16);
  --line-strong:rgba(140,200,255,.3);
  --text-1:#EAF2FB;
  --text-2:#A9BAD1;
  --text-3:#7A8CA6;
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --r-pill:999px;
  --shadow-1:0 18px 48px -28px rgba(0,10,30,.9);
  --shadow-glow:0 0 0 1px rgba(47,224,192,.35),0 10px 36px -14px rgba(47,224,192,.55);
  --sec-y:96px;
  --sec-y-m:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background .2s ease}
a:hover{color:var(--primary)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
button{font-family:inherit}
.container{width:100%;max-width:1200px;padding-left:20px;padding-right:20px;margin-right:auto;margin-left:auto}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
.section{padding:var(--sec-y-m) 0;position:relative}
.bg-alt{background:var(--bg-1)}
@media (min-width:992px){.section{padding:var(--sec-y) 0}}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(47,224,192,.4)}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(6,10,18,.55);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{background:rgba(6,10,18,.93);border-bottom-color:var(--line);box-shadow:0 14px 34px -26px rgba(0,0,0,.95)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:800;font-size:19px;letter-spacing:-.01em}
.brand:hover{color:var(--text-1)}
.brand-mark{width:14px;height:14px;border-radius:4px;transform:skewX(-12deg);background:linear-gradient(120deg,var(--primary),var(--primary-2));box-shadow:0 0 18px rgba(47,224,192,.55)}
.brand-text{white-space:nowrap}
.main-nav{display:none}
@media (min-width:992px){.main-nav{display:flex;align-items:center;gap:4px}}
.nav-a{position:relative;padding:10px 13px;color:var(--text-2);font-size:15px;border-radius:10px;white-space:nowrap}
.nav-a:hover{color:var(--text-1);background:rgba(140,200,255,.07)}
.nav-a.active{color:var(--text-1);font-weight:600}
.nav-a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--primary-2))}
.nav-side{display:flex;align-items:center;gap:12px}
.nav-cta{display:none}
@media (min-width:992px){.nav-cta{display:inline-flex}}
.nav-toggle{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(20,32,52,.6);color:var(--text-1);font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--primary)}
@media (min-width:992px){.nav-toggle{display:none}}
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,12,.66);z-index:1040;opacity:0;visibility:hidden;transition:.28s ease}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,330px);z-index:1045;
  background:var(--bg-1);border-left:1px solid var(--line);
  padding:22px 22px calc(28px + env(safe-area-inset-bottom));
  transform:translateX(102%);transition:transform .3s ease;
  display:flex;flex-direction:column;gap:22px;overflow-y:auto;
}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--text-2);font-size:16px}
.drawer-close:hover{color:var(--primary);border-color:var(--line-strong)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-a{padding:12px 14px;border-radius:12px;color:var(--text-2);font-size:15px;border:1px solid transparent}
.drawer-a:hover{color:var(--text-1);background:rgba(140,200,255,.07);border-color:var(--line)}
.drawer-a.active{color:var(--primary);border-color:rgba(47,224,192,.35);background:rgba(47,224,192,.08)}

/* 按钮 */
.btn-glow,.btn-outline-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;transition:transform .22s ease,filter .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn-glow{background:linear-gradient(120deg,#2FE0C0,#23C8E8);color:#05201C;box-shadow:0 10px 30px -12px rgba(47,224,192,.6)}
.btn-glow:hover{color:#05201C;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 38px -12px rgba(47,224,192,.75)}
.btn-glow:active{transform:translateY(0)}
.btn-glow:focus-visible{box-shadow:0 0 0 3px rgba(47,224,192,.38),0 10px 30px -12px rgba(47,224,192,.6)}
.btn-outline-soft{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.btn-outline-soft:hover{background:rgba(47,224,192,.08);border-color:rgba(47,224,192,.55);color:var(--text-1);transform:translateY(-2px)}
.btn-outline-soft:active{transform:translateY(0)}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:11px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);padding-bottom:2px;background-image:linear-gradient(90deg,var(--primary),var(--primary));background-repeat:no-repeat;background-size:0 1px;background-position:0 100%;transition:background-size .2s ease}
.link-more:hover{background-size:100% 1px;color:var(--primary)}

/* 通用板块头 */
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);border:1px solid rgba(47,224,192,.35);background:rgba(47,224,192,.08);color:var(--primary);font-size:13px;font-weight:600;letter-spacing:.02em}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3vw,34px)}
.section-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:620px}
.glass{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);-webkit-backdrop-filter:blur(18px) saturate(120%);backdrop-filter:blur(18px) saturate(120%);box-shadow:var(--shadow-1)}

/* Hero */
.hero{position:relative;padding:132px 0 82px;overflow:hidden;background:var(--bg-0)}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;filter:saturate(.92)}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(6,10,18,.97) 0%,rgba(6,10,18,.85) 46%,rgba(6,10,18,.52) 100%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1fr;gap:44px;align-items:center}
@media (min-width:992px){.hero{padding:158px 0 96px}.hero-inner{grid-template-columns:1.1fr .9fr;gap:52px}}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:var(--r-pill);background:rgba(20,32,52,.7);border:1px solid var(--line);color:var(--text-2);font-size:13px}
.hero-badge b{color:var(--accent);font-size:14px}
.hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:800;margin:22px 0 18px;letter-spacing:-.01em}
.hero h1 .hl{color:var(--primary)}
.hero-sub{color:var(--text-2);font-size:16px;max-width:560px}
@media (min-width:992px){.hero-sub{font-size:17px}}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.trust-pills li{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(20,32,52,.5);color:var(--text-2);font-size:13px}
.trust-pills li i{color:var(--primary);font-size:12px}
.hero-card{padding:26px;border-radius:var(--r-card)}
.hero-card h2{font-size:17px;margin-bottom:6px}
.hero-card .hc-note{color:var(--text-3);font-size:13px;margin-bottom:20px}
.hc-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:20px}
.hc-stat{padding:16px;border-radius:14px;border:1px solid var(--line);background:rgba(11,18,32,.7)}
.hc-stat b{display:block;font-size:26px;font-weight:800;color:var(--primary);line-height:1.2}
.hc-stat span{font-size:13px;color:var(--text-3)}
.hc-links{display:flex;flex-direction:column;gap:10px}
.hc-link{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 16px;border-radius:14px;border:1px solid var(--line);background:rgba(11,18,32,.55);color:var(--text-2);font-size:14px}
.hc-link:hover{border-color:rgba(47,224,192,.45);color:var(--text-1);background:rgba(47,224,192,.07)}
.hc-link i{color:var(--primary);font-size:12px}

/* 数据条 */
.stats-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media (min-width:768px){.stats-strip{grid-template-columns:repeat(4,1fr)}}
.stat-pill{padding:22px 20px;border-radius:16px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(20,32,52,.66),rgba(11,18,32,.6));text-align:left}
.stat-pill b{display:block;font-size:clamp(24px,2.6vw,32px);font-weight:800;color:var(--text-1);line-height:1.15}
.stat-pill b em{font-style:normal;color:var(--primary);font-size:.62em;margin-left:4px}
.stat-pill span{display:block;margin-top:6px;color:var(--text-3);font-size:13px}

/* 卖点错列 */
.feature-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:992px){.feature-grid{grid-template-columns:1.15fr .85fr;grid-template-rows:auto auto}}
.feature-main,.feature-side{border-radius:var(--r-card);border:1px solid var(--line);background:linear-gradient(180deg,rgba(20,32,52,.7),rgba(11,18,32,.72));padding:26px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.feature-main:hover,.feature-side:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-1)}
@media (min-width:992px){.feature-main{grid-row:span 2;display:flex;flex-direction:column;gap:18px;padding:28px}}
.f-num{display:block;font-size:40px;font-weight:800;line-height:1;color:rgba(47,224,192,.4);letter-spacing:-.02em}
.feature-main h3{font-size:22px;margin:14px 0 10px}
.feature-side h3{font-size:19px;margin:12px 0 8px}
.feature-main p,.feature-side p{color:var(--text-2);font-size:15px}
.feature-img{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:rgba(11,18,32,.9)}
.feature-img img{width:100%;aspect-ratio:16/9;object-fit:cover}
.feature-list{margin-top:6px;display:flex;flex-direction:column;gap:10px}
.feature-list li{position:relative;padding-left:20px;color:var(--text-2);font-size:14.5px}
.feature-list li::before{content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--primary)}

/* 场景演示 */
.demo-wrap{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:992px){.demo-wrap{grid-template-columns:320px 1fr;gap:32px;align-items:start}}
.demo-tabs{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
.demo-tabs::-webkit-scrollbar{display:none}
@media (min-width:992px){.demo-tabs{flex-direction:column;overflow:visible;padding-bottom:0}}
.demo-tab{
  flex:0 0 auto;text-align:left;padding:16px 18px;border-radius:14px;
  border:1px solid var(--line);background:rgba(20,32,52,.5);color:var(--text-2);
  font-size:15px;font-weight:600;cursor:pointer;transition:.22s ease;white-space:nowrap;
}
@media (min-width:992px){.demo-tab{white-space:normal;width:100%}}
.demo-tab:hover{color:var(--text-1);border-color:var(--line-strong)}
.demo-tab.active{color:var(--text-1);border-color:rgba(47,224,192,.5);background:rgba(47,224,192,.09);box-shadow:var(--shadow-glow)}
.demo-tab small{display:block;font-weight:400;font-size:12.5px;color:var(--text-3);margin-top:4px}
.demo-panel{display:none;padding:24px;border-radius:var(--r-card);border:1px solid var(--line);background:linear-gradient(180deg,rgba(20,32,52,.72),rgba(11,18,32,.7));animation:fade .26s ease}
.demo-panel.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.demo-panel h3{font-size:20px;margin-bottom:10px}
.demo-panel p{color:var(--text-2);font-size:15px}
.demo-img{margin-top:20px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:rgba(11,18,32,.9)}
.demo-img img{width:100%;aspect-ratio:16/9;object-fit:cover}
.demo-steps{margin-top:18px;display:grid;gap:12px}
@media (min-width:768px){.demo-steps{grid-template-columns:1fr 1fr}}
.demo-steps li{padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:rgba(11,18,32,.55);font-size:14px;color:var(--text-2)}
.demo-steps li b{display:block;color:var(--text-1);font-size:14.5px;margin-bottom:4px}

/* 社会认同 */
.proof-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:992px){.proof-grid{grid-template-columns:repeat(3,1fr)}}
.proof-card{padding:26px;border-radius:var(--r-card);border:1px solid var(--line);background:rgba(20,32,52,.6);display:flex;flex-direction:column;gap:16px}
.proof-quote{position:relative;color:var(--text-2);font-size:15px;padding-top:18px}
.proof-quote::before{content:"\201C";position:absolute;top:-14px;left:0;font-size:46px;line-height:1;color:rgba(47,224,192,.3);font-family:Georgia,serif}
.proof-user{display:flex;align-items:center;gap:12px;margin-top:auto}
.proof-avatar{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:linear-gradient(120deg,rgba(47,224,192,.35),rgba(35,200,232,.25));display:flex;align-items:center;justify-content:center;color:var(--text-1);font-weight:700;font-size:14px}
.proof-user b{display:block;font-size:14.5px;font-weight:600}
.proof-user span{font-size:12.5px;color:var(--text-3)}
.proof-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:32px}
@media (min-width:768px){.proof-metrics{grid-template-columns:repeat(4,1fr)}}
.metric{padding:22px 20px;border-radius:16px;border:1px solid var(--line);background:rgba(11,18,32,.6)}
.metric b{font-size:28px;font-weight:800;color:var(--primary);display:block;line-height:1.2}
.metric span{font-size:13px;color:var(--text-3)}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(20,32,52,.66),rgba(11,18,32,.72));
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;color:var(--text-1);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-1);color:var(--text-1)}
@media (min-width:992px){.news-grid .news-card:first-child{grid-column:span 2}}
.thumb{position:relative;aspect-ratio:16/10;background:rgba(20,32,52,.9);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .thumb img{transform:scale(1.03)}
.badge-chip{position:absolute;top:12px;left:12px;z-index:2;padding:4px 13px;border-radius:var(--r-pill);font-size:12px;background:rgba(6,10,18,.75);border:1px solid rgba(47,224,192,.45);color:var(--primary);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{color:var(--text-2);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.news-meta .more{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.empty-state{padding:52px 26px;border-radius:var(--r-card);border:1px dashed var(--line-strong);background:rgba(20,32,52,.35);text-align:center}
.empty-state i{font-size:30px;color:var(--primary);opacity:.8}
.empty-state p{color:var(--text-2);margin:14px 0 20px}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:rgba(20,32,52,.5);overflow:hidden;transition:border-color .22s ease,background .22s ease}
.faq-item.open{border-color:rgba(47,224,192,.45);background:rgba(20,32,52,.72)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:transparent;border:0;color:var(--text-1);font-size:16px;font-weight:600;text-align:left;cursor:pointer}
.faq-q i{color:var(--primary);font-size:14px;transition:transform .25s ease;flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:420px}
.faq-a p{padding:0 22px 20px;color:var(--text-2);font-size:15px}

/* 底部 CTA */
.cta-panel{
  position:relative;padding:56px 28px;border-radius:26px;overflow:hidden;text-align:center;
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(20,32,52,.78),rgba(11,18,32,.8));
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.cta-panel::before{content:"";position:absolute;top:-40%;left:50%;width:520px;height:520px;transform:translateX(-50%);background:radial-gradient(circle,rgba(47,224,192,.16),transparent 68%);pointer-events:none}
.cta-panel h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;position:relative}
.cta-panel p{color:var(--text-2);max-width:600px;margin:0 auto 26px;position:relative}
.cta-panel .btn-glow{position:relative}

/* 页脚 */
.site-footer{background:#050810;border-top:1px solid var(--line);padding:72px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:16px;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--text-1);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;margin-top:48px;padding-top:22px;border-top:1px solid var(--line);color:var(--text-3);font-size:13px}

/* 底部转化条 */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1020;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,10,18,.94);border-top:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transform:translateY(120%);transition:transform .3s ease;
}
.sticky-cta.show{transform:none}
.sticky-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:1200px;margin:0 auto}
.sticky-cta-inner .sticky-text{display:none;color:var(--text-2);font-size:14px}
.sticky-cta-inner .sticky-actions{display:flex;gap:10px;width:100%}
.sticky-cta-inner .sticky-actions .btn-glow,.sticky-cta-inner .sticky-actions .btn-outline-soft{flex:1;padding:11px 16px;font-size:14px}
@media (min-width:992px){
  .sticky-cta{left:auto;right:26px;bottom:26px;background:transparent;border:0;padding:0;transform:translateY(140%)}
  .sticky-cta-inner{max-width:none;gap:18px;padding:16px 20px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--surface);-webkit-backdrop-filter:blur(18px) saturate(120%);backdrop-filter:blur(18px) saturate(120%);box-shadow:var(--shadow-1)}
  .sticky-cta-inner .sticky-text{display:block;max-width:210px}
  .sticky-cta-inner .sticky-actions{width:auto}
  .sticky-cta-inner .sticky-actions .btn-glow,.sticky-cta-inner .sticky-actions .btn-outline-soft{flex:0 0 auto}
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .news-card:hover .thumb img{transform:none}
}

/* roulang page: article */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --primary:#2FE0C0;
  --primary-deep:#23C8E8;
  --accent:#FF8A3D;
  --surface:rgba(20,32,52,.72);
  --surface-solid:#111B2C;
  --line:rgba(140,200,255,.16);
  --line-strong:rgba(140,200,255,.32);
  --text-1:#EAF2FB;
  --text-2:#A9BAD1;
  --text-3:#7A8CA6;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-card:0 18px 48px -28px rgba(0,10,30,.9);
  --shadow-glow:0 0 0 1px rgba(47,224,192,.35),0 10px 36px -14px rgba(47,224,192,.55);
  --gap-block:96px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.3;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){
  .container{padding-left:24px;padding-right:24px}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-glow{
  background:linear-gradient(120deg,var(--primary),var(--primary-deep));
  color:#04211C;
  box-shadow:0 10px 30px -14px rgba(47,224,192,.75);
}
.btn-glow:hover{
  color:#04211C;
  filter:brightness(1.06);
  transform:translateY(-2px);
  box-shadow:var(--shadow-glow);
}
.btn-glow:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{
  background:transparent;
  color:var(--text-1);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{
  background:rgba(47,224,192,.08);
  border-color:rgba(47,224,192,.55);
  color:var(--text-1);
  transform:translateY(-2px);
}
.btn:focus-visible,
a:focus-visible,
button:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(47,224,192,.45);
  border-radius:var(--radius-btn);
}

/* ===== 头部导航 ===== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1050;
  background:rgba(6,10,18,.42);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.scrolled{
  background:rgba(6,10,18,.9);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px -24px rgba(0,0,0,.95);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:800;font-size:18px;letter-spacing:-0.01em}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:12px;height:22px;
  border-radius:4px 2px 4px 2px;
  background:linear-gradient(150deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 14px rgba(47,224,192,.65);
  transform:skewX(-8deg);
}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-a{
  position:relative;
  padding:9px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-a:hover{color:var(--text-1);background:rgba(140,200,255,.07)}
.nav-a.active{color:var(--text-1);font-weight:600}
.nav-a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 10px rgba(47,224,192,.8);
}
.nav-side{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  background:rgba(20,32,52,.7);
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--text-1);
  font-size:17px;
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-strong)}
.nav-mask{
  position:fixed;inset:0;
  background:rgba(3,6,12,.7);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:1035;
}
.nav-mask.show{opacity:1;visibility:visible}

@media (max-width:991.98px){
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .main-nav{
    position:fixed;
    top:0;right:0;
    height:100%;
    width:min(320px,84vw);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:92px 20px 32px;
    background:rgba(8,14,24,.98);
    backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .28s ease;
    overflow-y:auto;
    z-index:1040;
  }
  .main-nav.open{transform:translateX(0)}
  .nav-a{
    padding:15px 10px;
    font-size:16px;
    border-bottom:1px solid var(--line);
    border-radius:0;
  }
  .nav-a.active{color:var(--primary)}
  .nav-a.active::after{left:0;right:auto;width:3px;height:18px;top:50%;bottom:auto;transform:translateY(-50%)}
}

/* ===== 顶部横幅与面包屑 ===== */
.page-banner{
  position:relative;
  margin-top:72px;
  padding:56px 0 34px;
  background-image:
    linear-gradient(100deg,rgba(6,10,18,.96) 0%,rgba(6,10,18,.78) 48%,rgba(6,10,18,.55) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-3);
}
.breadcrumb-line a{color:var(--text-2)}
.breadcrumb-line a:hover{color:var(--primary)}
.breadcrumb-line .sep{color:var(--text-3);opacity:.6}
.breadcrumb-line .current{
  color:var(--text-2);
  max-width:min(560px,62vw);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ===== 文章主体 ===== */
.main-area{
  padding:56px 0 var(--gap-block);
  background:
    radial-gradient(900px 420px at 12% 0%,rgba(47,224,192,.08),transparent 62%),
    var(--bg-0);
}
.article-head{
  padding-bottom:26px;
  border-bottom:1px solid var(--line);
  margin-bottom:34px;
}
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px}
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  border:1px solid rgba(47,224,192,.42);
  background:rgba(47,224,192,.08);
}
.badge-accent{
  color:var(--accent);
  border-color:rgba(255,138,61,.42);
  background:rgba(255,138,61,.08);
}
.article-head h1{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:800;
  letter-spacing:-0.01em;
  line-height:1.28;
  margin-bottom:18px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  font-size:14px;
  color:var(--text-3);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--primary);opacity:.85}

.layout-row{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:32px;
}
@media (min-width:992px){
  .layout-row{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:44px}
}

.read-col{min-width:0}
.article-body{
  max-width:740px;
  font-size:16px;
  line-height:1.9;
  color:var(--text-2);
  word-break:break-word;
}
.article-body > * + *{margin-top:18px}
.article-body p{margin:0 0 18px}
.article-body h2{
  margin:42px 0 18px;
  padding-left:14px;
  border-left:4px solid var(--primary);
  font-size:clamp(20px,2.1vw,26px);
  color:var(--text-1);
}
.article-body h3{
  margin:28px 0 12px;
  padding-left:10px;
  border-left:2px solid rgba(47,224,192,.5);
  font-size:19px;
  color:var(--text-1);
}
.article-body h4{margin:22px 0 10px;font-size:17px;color:var(--text-1)}
.article-body ul,
.article-body ol{padding-left:22px;margin:0 0 18px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0}
.article-body li::marker{color:var(--primary)}
.article-body blockquote{
  margin:24px 0;
  padding:16px 22px;
  border-left:3px solid var(--primary);
  border-radius:0 14px 14px 0;
  background:rgba(20,32,52,.55);
  backdrop-filter:blur(12px);
  color:var(--text-1);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;
  height:auto;
  border-radius:var(--radius-img);
  margin:24px auto;
  background:var(--bg-1);
  border:1px solid var(--line);
}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(47,224,192,.4)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body code{
  background:rgba(47,224,192,.1);
  color:var(--primary);
  padding:2px 7px;
  border-radius:6px;
  font-size:14px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-body th,
.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
}
.article-body th{background:rgba(20,32,52,.7);color:var(--text-1);font-weight:600}
.article-body tr:last-child td{border-bottom:none}
.article-body hr{border:none;height:1px;background:var(--line);margin:32px 0}

.empty-state{
  max-width:640px;
  padding:48px 32px;
  text-align:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(18px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.empty-state i{font-size:34px;color:var(--primary);margin-bottom:14px;display:block}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{margin-bottom:22px;color:var(--text-2)}

/* ===== 侧栏 ===== */
.side-col{min-width:0}
@media (min-width:992px){
  .side-col{position:sticky;top:96px;align-self:start}
}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  backdrop-filter:blur(18px) saturate(120%);
  box-shadow:var(--shadow-card);
  margin-bottom:24px;
}
.side-card h3{
  font-size:16px;
  margin-bottom:16px;
  padding-left:12px;
  border-left:3px solid var(--primary);
}
.toc-list li{margin:0}
.toc-list a{
  display:block;
  padding:9px 10px;
  font-size:14px;
  color:var(--text-2);
  border-radius:10px;
  border-left:2px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.toc-list a:hover{background:rgba(47,224,192,.08);color:var(--text-1)}
.toc-list a.is-active{
  color:var(--primary);
  border-left-color:var(--primary);
  background:rgba(47,224,192,.07);
}
.toc-list .lv3{padding-left:24px;font-size:13.5px}
.toc-empty{font-size:14px;color:var(--text-3)}

.mini-post{
  display:flex;
  gap:12px;
  padding:12px;
  border-radius:14px;
  border:1px solid transparent;
  transition:transform .22s ease,background .22s ease,border-color .22s ease;
}
.mini-post:hover{
  background:rgba(140,200,255,.06);
  border-color:var(--line);
  transform:translateY(-2px);
}
.mini-post .thumb{
  width:78px;height:58px;
  flex:0 0 78px;
  border-radius:12px;
  overflow:hidden;
  background:var(--bg-1);
  border:1px solid var(--line);
}
.mini-post .thumb img{width:100%;height:100%;object-fit:cover}
.mini-post h4{
  font-size:14.5px;
  line-height:1.5;
  color:var(--text-1);
  font-weight:600;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.mini-post .m-tag{font-size:12.5px;color:var(--text-3);margin-top:6px;display:block}

/* ===== 文末推荐 ===== */
.after-article{
  margin-top:52px;
  max-width:740px;
  padding-top:32px;
  border-top:1px solid var(--line);
}
.after-article h2{
  font-size:20px;
  margin-bottom:20px;
  padding-left:12px;
  border-left:4px solid var(--primary);
}
.rec-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
@media (min-width:640px){
  .rec-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
.rec-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.rec-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-card);
}
.rec-card .rec-thumb{
  aspect-ratio:16/10;
  background:var(--bg-0);
  overflow:hidden;
}
.rec-card .rec-thumb img{width:100%;height:100%;object-fit:cover}
.rec-card .rec-body{padding:14px 16px 18px}
.rec-card .rec-body h3{
  font-size:15px;
  line-height:1.5;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-card .rec-body span{font-size:12.5px;color:var(--text-3)}
.back-links{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}

/* ===== FAQ ===== */
.faq-section{
  padding:var(--gap-block) 0;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{
  font-size:clamp(23px,2.8vw,32px);
  margin-bottom:12px;
}
.section-head p{color:var(--text-2);font-size:15.5px}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(20,32,52,.45);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{
  border-color:rgba(47,224,192,.55);
  box-shadow:0 10px 34px -22px rgba(47,224,192,.6);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{
  color:var(--primary);
  transition:transform .25s ease;
  font-size:15px;
}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-body{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ===== 底部 CTA ===== */
.cta-section{padding:var(--gap-block) 0;background:var(--bg-0)}
.cta-panel{
  max-width:960px;
  margin:0 auto;
  padding:52px 36px;
  text-align:center;
  border-radius:24px;
  border:1px solid var(--line-strong);
  background:
    radial-gradient(600px 240px at 50% 0%,rgba(47,224,192,.16),transparent 70%),
    var(--surface);
  backdrop-filter:blur(18px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.cta-panel h2{font-size:clamp(23px,2.9vw,34px);margin-bottom:14px}
.cta-panel p{max-width:620px;margin:0 auto 28px;color:var(--text-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
}
.footer-brand p{margin-top:16px;font-size:14.5px;color:var(--text-2);max-width:340px}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.04em;
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a,
.footer-col ul li span{
  font-size:14.5px;
  color:var(--text-2);
}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:13.5px;
  color:var(--text-3);
}

/* ===== 底部固定转化条 ===== */
.fixed-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1045;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));
  background:rgba(8,14,24,.96);
  backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  transform:translateY(120%);
  transition:transform .3s ease;
}
.fixed-cta.show{transform:translateY(0)}
.fixed-cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}
.fcta-text{display:none;flex-direction:column;line-height:1.4}
.fcta-text strong{font-size:14.5px;color:var(--text-1)}
.fcta-text span{font-size:12.5px;color:var(--text-3)}
.fcta-actions{display:flex;gap:10px;width:100%}
.fcta-actions .btn{flex:1}

@media (min-width:768px){
  .fcta-actions{width:auto}
  .fcta-actions .btn{flex:0 0 auto}
}
@media (min-width:992px){
  .fixed-cta{
    left:auto;right:24px;bottom:24px;
    width:340px;
    padding:18px;
    border-radius:var(--radius-card);
    border:1px solid var(--line);
    background:var(--surface);
    box-shadow:var(--shadow-card);
    transform:translateY(140%);
  }
  .fixed-cta-inner{flex-direction:column;align-items:stretch;gap:14px}
  .fcta-text{display:flex}
  .fcta-actions{width:100%}
}
body{padding-bottom:76px}
@media (min-width:992px){body{padding-bottom:0}}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition-duration:.01ms!important}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --primary:#2FE0C0;
  --primary-2:#23C8E8;
  --accent:#FF8A3D;
  --surface:rgba(20,32,52,.72);
  --surface-strong:rgba(16,26,44,.92);
  --line:rgba(140,200,255,.16);
  --line-strong:rgba(140,200,255,.32);
  --text-1:#EAF2FB;
  --text-2:#A9BAD1;
  --text-3:#7A8CA6;
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --r-pill:999px;
  --shadow-card:0 18px 48px -28px rgba(0,10,30,.9);
  --shadow-glow:0 0 0 1px rgba(47,224,192,.35),0 10px 36px -14px rgba(47,224,192,.55);
  --space-sec:96px;
  --ease:220ms ease;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--primary);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text-1);margin:0;letter-spacing:-.01em;}
p{margin:0 0 16px;color:var(--text-2);}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px;}}
.section{padding:var(--space-sec) 0;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;line-height:1;letter-spacing:.08em;
  color:var(--primary);
  border:1px solid rgba(47,224,192,.32);
  background:rgba(47,224,192,.06);
  padding:8px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;margin-bottom:14px;}
.section-head p{margin-bottom:0;font-size:15.5px;}
h3{font-size:21px;font-weight:700;line-height:1.45;}
.text-accent{color:var(--accent);}
.text-primary{color:var(--primary);}

/* ---------- 按钮 ---------- */
.btn{
  border-radius:var(--r-btn) !important;
  font-weight:600;font-size:15px;
  padding:12px 22px;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
}
.btn-glow{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#052018 !important;
  box-shadow:var(--shadow-glow);
}
.btn-glow:hover{
  filter:brightness(1.06);transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,224,192,.45),0 16px 40px -12px rgba(47,224,192,.7);
  color:#052018 !important;
}
.btn-glow:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{
  background:transparent;color:var(--text-1) !important;
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{
  background:rgba(47,224,192,.08);
  border-color:rgba(47,224,192,.6);
  transform:translateY(-2px);
}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn:focus-visible,.nav-a:focus-visible,.nav-toggle:focus-visible,.footer-col a:focus-visible,.tag-pill:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(47,224,192,.45);
}
.text-link{
  color:var(--primary);font-weight:600;font-size:14.5px;
  background-image:linear-gradient(var(--primary),var(--primary));
  background-size:0% 1px;background-position:0 100%;background-repeat:no-repeat;
  transition:background-size 200ms ease;
  padding-bottom:2px;
}
.text-link:hover{background-size:100% 1px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(6,10,18,.55);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-solid{
  background:rgba(6,10,18,.92);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px -22px rgba(0,0,0,.95);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:74px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:12px;height:22px;border-radius:4px;
  background:linear-gradient(160deg,var(--primary),var(--primary-2));
  transform:skewX(-14deg);
  box-shadow:0 0 18px -4px rgba(47,224,192,.9);
}
.brand-text{font-size:19px;font-weight:800;color:var(--text-1);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1;}
.nav-a{
  position:relative;color:var(--text-2);font-size:15px;font-weight:500;
  padding:10px 12px;border-radius:10px;white-space:nowrap;
}
.nav-a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-a:hover{color:var(--text-1);background:rgba(47,224,192,.06);}
.nav-a.active{color:var(--text-1);}
.nav-a.active::after{transform:scaleX(1);}
.nav-side{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(47,224,192,.08);border:1px solid var(--line-strong);
  color:var(--text-1);font-size:17px;
}
@media(max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-cta{display:none;}
  .nav-wrap{height:66px;justify-content:space-between;}
}

/* ---------- 抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:1055;visibility:hidden;pointer-events:none;
}
.nav-drawer.open{visibility:visible;pointer-events:auto;}
.drawer-mask{
  position:absolute;inset:0;background:rgba(3,6,12,.72);
  opacity:0;transition:opacity var(--ease);
}
.nav-drawer.open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:290px;max-width:86%;
  background:var(--surface-strong);
  border-left:1px solid var(--line);
  padding:22px 20px 32px;
  transform:translateX(100%);transition:transform 260ms ease;
  display:flex;flex-direction:column;gap:22px;
  backdrop-filter:blur(18px) saturate(120%);
}
.nav-drawer.open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:11px;background:transparent;
  border:1px solid var(--line-strong);color:var(--text-1);font-size:16px;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  color:var(--text-2);font-size:15.5px;font-weight:500;
  padding:12px 14px;border-radius:12px;border:1px solid transparent;
}
.drawer-nav a:hover{background:rgba(47,224,192,.07);color:var(--text-1);}
.drawer-nav a.active{color:var(--text-1);border-color:rgba(47,224,192,.4);background:rgba(47,224,192,.08);}

/* ---------- 分类页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(100deg,rgba(6,10,18,.96) 0%,rgba(6,10,18,.82) 46%,rgba(6,10,18,.58) 100%),
             url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,224,192,.5),transparent);
}
.page-hero .inner{
  min-height:220px;
  padding:38px 0 40px;
  display:flex;flex-direction:column;justify-content:center;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:16px;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:var(--text-3);}
.crumb .current{color:var(--primary);}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.22;letter-spacing:-.01em;
  margin-bottom:14px;max-width:760px;
}
.page-hero .lede{font-size:16.5px;color:var(--text-2);max-width:680px;margin-bottom:0;}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-pills span{
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:var(--r-pill);
  padding:7px 14px;background:rgba(20,32,52,.5);
}

/* ---------- 图文交错 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split+.split{margin-top:84px;}
.split.reverse .split-media{order:2;}
.split.reverse .split-body{order:1;}
.split-body h2{font-size:clamp(23px,2.6vw,31px);font-weight:700;line-height:1.3;margin-bottom:16px;}
.split-body .num{
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--accent);
  display:block;margin-bottom:12px;
}
.check-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.7;}
.check-list i{color:var(--primary);margin-top:6px;font-size:14px;}
.media-frame{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);background:#0f1a2b;box-shadow:var(--shadow-card);
}
.media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms ease;}
.media-frame:hover img{transform:scale(1.03);}
.media-frame .cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:13px;color:var(--text-2);
  background:linear-gradient(180deg,rgba(6,10,18,0),rgba(6,10,18,.88));
}

/* ---------- 步骤条 ---------- */
.steps{display:flex;flex-direction:column;gap:18px;margin-top:24px;}
.step{
  display:flex;gap:16px;padding:18px 20px;border-radius:16px;
  border:1px solid var(--line);background:rgba(20,32,52,.42);
  transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.step:hover{border-color:rgba(47,224,192,.45);transform:translateY(-3px);background:rgba(20,32,52,.66);}
.step .idx{
  flex:0 0 34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#052018;
  background:linear-gradient(140deg,var(--primary),var(--primary-2));
}
.step h3{font-size:17px;margin-bottom:6px;}
.step p{margin:0;font-size:14.5px;line-height:1.75;}

/* ---------- 数据条 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:26px;}
.spec-card{
  border:1px solid var(--line);border-radius:16px;padding:20px 22px;
  background:rgba(20,32,52,.42);transition:border-color var(--ease),transform var(--ease);
}
.spec-card:hover{border-color:rgba(47,224,192,.4);transform:translateY(-3px);}
.spec-card h3{font-size:16px;margin-bottom:12px;}
.spec-row{
  display:flex;justify-content:space-between;gap:14px;
  padding:9px 0;border-bottom:1px dashed var(--line);
  font-size:14px;color:var(--text-3);
}
.spec-row:last-child{border-bottom:0;padding-bottom:0;}
.spec-row b{color:var(--text-1);font-weight:600;}

/* ---------- 更新条目 ---------- */
.update-list{display:flex;flex-direction:column;gap:14px;margin-top:30px;}
.update-item{
  display:grid;grid-template-columns:150px 1fr auto;gap:22px;align-items:center;
  padding:20px 24px;border-radius:16px;
  border:1px solid var(--line);background:rgba(20,32,52,.4);
  transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.update-item:hover{border-color:rgba(47,224,192,.45);transform:translateY(-3px);background:rgba(20,32,52,.68);}
.update-item .ver{font-size:16px;font-weight:700;color:var(--primary);}
.update-item .ver small{display:block;font-size:12.5px;color:var(--text-3);font-weight:400;margin-top:4px;}
.update-item h3{font-size:16.5px;margin-bottom:6px;}
.update-item p{margin:0;font-size:14.5px;line-height:1.7;}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:var(--accent);
  border:1px solid rgba(255,138,61,.42);background:rgba(255,138,61,.08);
  padding:5px 12px;border-radius:var(--r-pill);white-space:nowrap;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);border-radius:14px;
  background:rgba(20,32,52,.4);margin-bottom:14px;overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{border-color:rgba(47,224,192,.5);background:rgba(20,32,52,.62);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text-1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--primary);transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item .ans{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.8;}

/* ---------- 交叉链接 ---------- */
.cross{padding:56px 0;}
.cross-inner{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(20,32,52,.7),rgba(11,18,32,.55));
  padding:32px 34px;
}
.cross h2{font-size:20px;margin-bottom:10px;}
.cross p{font-size:14.5px;margin-bottom:20px;}
.tag-row{display:flex;flex-wrap:wrap;gap:12px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;color:var(--text-1);
  border:1px solid var(--line-strong);border-radius:var(--r-pill);
  padding:10px 18px;background:rgba(6,10,18,.5);
  transition:border-color var(--ease),background var(--ease),transform var(--ease);
}
.tag-pill:hover{border-color:rgba(47,224,192,.6);background:rgba(47,224,192,.1);transform:translateY(-2px);color:var(--text-1);}
.tag-pill i{color:var(--primary);font-size:12px;}

/* ---------- CTA ---------- */
.cta-panel{
  border:1px solid rgba(47,224,192,.3);
  border-radius:22px;
  background:linear-gradient(120deg,rgba(47,224,192,.12),rgba(35,200,232,.06) 55%,rgba(20,32,52,.7));
  padding:52px 44px;text-align:center;
  box-shadow:var(--shadow-card);
}
.cta-panel h2{font-size:clamp(23px,3vw,33px);font-weight:700;margin-bottom:14px;}
.cta-panel p{max-width:620px;margin:0 auto 26px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{font-size:14.5px;line-height:1.8;margin:16px 0 0;max-width:330px;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14.5px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13.5px;color:var(--text-3);
}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media(max-width:575px){.footer-grid{grid-template-columns:1fr;}}

/* ---------- 底部转化条 ---------- */
.convert-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;
  display:flex;gap:12px;align-items:center;justify-content:center;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,10,18,.94);
  border-top:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(120%);
  transform:translateY(110%);transition:transform 300ms ease;
}
.convert-bar.show{transform:translateY(0);}
.convert-bar .btn{flex:1;max-width:220px;font-size:14.5px;padding:10px 16px;}
@media(min-width:992px){
  .convert-bar{
    left:auto;right:28px;bottom:28px;width:auto;
    background:var(--surface);border:1px solid var(--line);
    border-radius:18px;padding:14px;gap:10px;
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(18px) saturate(120%);
  }
  .convert-bar .btn{flex:none;max-width:none;}
}
@media(max-width:991px){
  body{padding-bottom:0;}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 600ms ease,transform 600ms ease;}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none !important;}
}

/* ---------- 响应式 ---------- */
@media(max-width:991px){
  :root{--space-sec:64px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:1;}
  .split.reverse .split-body{order:2;}
  .split+.split{margin-top:56px;}
  .spec-grid{grid-template-columns:1fr;}
  .update-item{grid-template-columns:1fr;gap:10px;}
  .page-hero .inner{min-height:180px;padding:32px 0 34px;}
  .cta-panel{padding:40px 24px;}
}
@media(max-width:575px){
  .nav-cta{display:none;}
  .hero-pills span{font-size:12.5px;padding:6px 12px;}
}

/* roulang page: category3 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --primary:#2FE0C0;
  --primary-2:#23C8E8;
  --accent:#FF8A3D;
  --surface:rgba(20,32,52,.72);
  --line:rgba(140,200,255,.16);
  --line-strong:rgba(47,224,192,.42);
  --text-1:#EAF2FB;
  --text-2:#A9BAD1;
  --text-3:#7A8CA6;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-card:0 18px 48px -28px rgba(0,10,30,.9);
  --shadow-glow:0 0 0 1px rgba(47,224,192,.35),0 10px 36px -14px rgba(47,224,192,.55);
  --sec-gap:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:3px solid rgba(47,224,192,.65);outline-offset:2px;border-radius:8px}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--text-1)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(6,10,18,.55);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{
  background:rgba(7,12,21,.92);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px -22px rgba(0,0,0,.95);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em}
.brand-mark{
  width:14px;height:22px;border-radius:4px;flex:none;
  background:linear-gradient(140deg,var(--primary),var(--primary-2));
  box-shadow:0 0 18px -2px rgba(47,224,192,.85);
  transform:skewX(-12deg);
}
.brand-text{font-size:18px;color:var(--text-1);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-a{
  position:relative;padding:8px 12px;font-size:15px;color:var(--text-2);
  border-radius:10px;transition:color .2s ease,background .2s ease;
}
.nav-a:hover{color:var(--text-1);background:rgba(47,224,192,.08)}
.nav-a.active{color:var(--text-1);font-weight:600}
.nav-a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  box-shadow:0 0 12px rgba(47,224,192,.7);
}
.nav-side{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(20,32,52,.7);color:var(--text-1);font-size:17px;align-items:center;justify-content:center;
  cursor:pointer;transition:.2s ease;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--primary)}
.nav-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.66);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:.26s ease;z-index:85;
}
body.nav-open .nav-mask{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  text-align:center;
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-glow{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04140F;box-shadow:var(--shadow-glow);
}
.btn-glow:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,192,.45),0 16px 40px -14px rgba(47,224,192,.7);color:#04140F}
.btn-glow:active{transform:translateY(0)}
.btn-line{
  background:transparent;border-color:var(--line);color:var(--text-1);
}
.btn-line:hover{border-color:var(--line-strong);background:rgba(47,224,192,.08);color:var(--primary);transform:translateY(-2px)}
.btn-accent{
  background:transparent;border-color:rgba(255,138,61,.42);color:var(--accent);
}
.btn-accent:hover{background:rgba(255,138,61,.1);border-color:var(--accent);transform:translateY(-2px)}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:14px}
.crumb a{color:var(--text-2);transition:color .2s ease}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3);opacity:.6}

/* ============ 页面首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:124px 0 52px;
  background:
    linear-gradient(90deg,rgba(6,10,18,.95) 0%,rgba(6,10,18,.78) 48%,rgba(6,10,18,.55) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,192,.20),transparent 68%);pointer-events:none;
}
.page-hero .inner{position:relative;z-index:2;max-width:820px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;margin-bottom:18px;
  border-radius:999px;border:1px solid var(--line-strong);background:rgba(47,224,192,.08);
  font-size:13px;color:var(--primary);letter-spacing:.02em;
}
.page-hero h1{
  font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.01em;line-height:1.24;
}
.page-hero .lead{margin-top:16px;font-size:16px;color:var(--text-2);max-width:680px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(11,18,32,.6);font-size:13px;color:var(--text-2);
}
.chip i{color:var(--primary);font-size:12px}

/* ============ 板块 ============ */
.section{padding:var(--sec-gap) 0}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--primary);margin-bottom:12px;font-weight:600;
}
.sec-head h2{font-size:clamp(23px,2.6vw,32px);font-weight:700}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:15.5px}

/* ============ 信息卡阵 ============ */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.spec-card{
  display:flex;flex-direction:column;gap:16px;
  padding:24px;border-radius:var(--radius-card);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(20,32,52,.86),rgba(11,18,32,.9));
  box-shadow:var(--shadow-card);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.spec-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 26px 58px -28px rgba(0,10,30,.98)}
.spec-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.spec-card h3{font-size:19px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12.5px;font-weight:600;white-space:nowrap;
}
.badge-live{background:rgba(47,224,192,.12);border:1px solid var(--line-strong);color:var(--primary)}
.badge-soon{background:rgba(255,138,61,.12);border:1px solid rgba(255,138,61,.42);color:var(--accent)}
.badge-open{background:rgba(140,200,255,.1);border:1px solid var(--line);color:var(--text-2)}
.spec-rows{margin:0}
.spec-row{
  display:flex;justify-content:space-between;align-items:baseline;gap:14px;
  padding:9px 0;border-bottom:1px dashed rgba(140,200,255,.14);font-size:14px;
}
.spec-row:last-child{border-bottom:0;padding-bottom:0}
.spec-row dt{color:var(--text-3);font-weight:400;flex:none}
.spec-row dd{margin:0;color:var(--text-1);font-weight:600;text-align:right}
.spec-card .card-note{font-size:13px;color:var(--text-3);margin-top:auto;padding-top:6px;border-top:1px solid rgba(140,200,255,.1)}

/* ============ 时间线 ============ */
.tl-wrap{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.tl-side p{color:var(--text-2);font-size:15px;margin-top:16px}
.tl-stat{
  margin-top:26px;padding:20px 22px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--surface);backdrop-filter:blur(18px) saturate(120%);
}
.tl-stat strong{display:block;font-size:34px;font-weight:700;color:var(--primary);line-height:1.1}
.tl-stat span{display:block;font-size:13.5px;color:var(--text-3);margin-top:6px}
.timeline{position:relative;padding-left:30px}
.timeline::before{
  content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(47,224,192,.08));
}
.tl-item{position:relative;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--bg-1);border:2px solid var(--primary);box-shadow:0 0 0 4px rgba(47,224,192,.08);
}
.tl-item h3{font-size:17px;margin-bottom:6px}
.tl-item p{color:var(--text-2);font-size:14.5px}
.tl-item .tl-time{display:inline-block;font-size:12.5px;color:var(--accent);margin-bottom:4px;letter-spacing:.02em}

/* ============ 图文错列 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .figure{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(140deg,#101B2C,#0A1220);box-shadow:var(--shadow-card);
}
.split .figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.split h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:16px}
.split p{color:var(--text-2);font-size:15.5px}
.field-list{margin-top:24px;display:grid;gap:14px}
.field-item{display:flex;gap:14px;padding:16px 18px;border-radius:14px;border:1px solid var(--line);background:rgba(11,18,32,.66);transition:.22s ease}
.field-item:hover{border-color:var(--line-strong);transform:translateX(3px)}
.field-item i{color:var(--primary);margin-top:5px;font-size:15px}
.field-item h3{font-size:16px;margin-bottom:4px}
.field-item p{font-size:14px;color:var(--text-2)}

/* ============ 问答 ============ */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.qa-card{
  padding:22px 24px;border-radius:16px;border:1px solid var(--line);
  background:rgba(11,18,32,.7);transition:.22s ease;
}
.qa-card:hover{border-color:var(--line-strong);background:rgba(20,32,52,.7)}
.qa-card h3{font-size:16.5px;display:flex;gap:10px;align-items:flex-start;margin-bottom:10px}
.qa-card h3 i{color:var(--primary);font-size:14px;margin-top:5px}
.qa-card p{font-size:14.5px;color:var(--text-2)}
.qa-card .q-index{color:var(--primary);font-weight:700;font-size:13px;letter-spacing:.08em;display:block;margin-bottom:8px}

/* ============ 交叉链接 ============ */
.cross{padding:56px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1)}
.cross-inner{display:flex;flex-wrap:wrap;align-items:center;gap:16px 20px;justify-content:space-between}
.cross-title{font-size:17px;font-weight:700}
.cross-title span{display:block;font-size:13.5px;color:var(--text-3);font-weight:400;margin-top:6px}
.pill-row{display:flex;flex-wrap:wrap;gap:12px}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;
  border:1px solid var(--line);background:rgba(20,32,52,.6);font-size:14px;color:var(--text-2);
  transition:.22s ease;
}
.pill i{font-size:12px;color:var(--primary)}
.pill:hover{border-color:var(--line-strong);color:var(--text-1);transform:translateY(-2px);background:rgba(47,224,192,.09)}

/* ============ 底部 CTA ============ */
.cta-band{padding:var(--sec-gap) 0}
.cta-panel{
  position:relative;overflow:hidden;text-align:center;
  padding:56px 32px;border-radius:24px;border:1px solid var(--line-strong);
  background:
    radial-gradient(120% 140% at 50% 0%,rgba(47,224,192,.16),transparent 62%),
    linear-gradient(180deg,rgba(20,32,52,.82),rgba(11,18,32,.9));
  backdrop-filter:blur(18px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.cta-panel h2{font-size:clamp(24px,2.8vw,34px);font-weight:800}
.cta-panel p{margin:16px auto 0;max-width:640px;color:var(--text-2);font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}
.cta-note{margin-top:20px;font-size:13px;color:var(--text-3)}

/* ============ 页脚 ============ */
.site-footer{background:#050810;border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);max-width:320px;line-height:1.9}
.footer-col h4{font-size:14px;letter-spacing:.04em;color:var(--text-1);margin-bottom:16px}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .2s ease}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:center;gap:12px;
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  background:rgba(8,13,23,.94);
  border-top:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(120%);
  transform:translateY(110%);
  transition:transform .3s ease,opacity .3s ease;
}
.sticky-cta.is-show{transform:translateY(0)}
.sticky-cta .btn{flex:1;padding:11px 14px;font-size:14.5px}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media(max-width:1199px){
  .main-nav{gap:2px}
  .nav-a{padding:8px 10px;font-size:14.5px}
}
@media(max-width:991px){
  :root{--sec-gap:64px}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:282px;max-width:84vw;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:88px 20px 28px;margin:0;
    background:linear-gradient(180deg,#0B1220,#070C15);
    border-left:1px solid var(--line);z-index:90;
    transform:translateX(100%);transition:transform .28s ease;
    overflow-y:auto;
  }
  body.nav-open .main-nav{transform:translateX(0)}
  .nav-a{padding:13px 14px;font-size:15.5px;border-radius:12px;border:1px solid transparent}
  .nav-a.active{background:rgba(47,224,192,.09);border-color:var(--line-strong)}
  .nav-a.active::after{display:none}
  .nav-side{margin-left:auto}
  .tl-wrap{grid-template-columns:1fr;gap:36px}
  .spec-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .split{grid-template-columns:1fr;gap:36px}
  .split.reverse .figure{order:-1}
  .qa-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero{padding:110px 0 44px}
}
@media(max-width:767px){
  .nav-wrap{height:62px}
  .brand-text{font-size:17px}
  .sec-head{margin-bottom:32px}
  .spec-grid{grid-template-columns:1fr}
  .cta-panel{padding:40px 20px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
  .page-hero{padding:100px 0 40px}
  .page-hero .lead{font-size:15px}
  body{padding-bottom:64px}
}
@media(max-width:519px){
  .container{padding:0 16px}
  .spec-card{padding:20px}
  .qa-card{padding:20px}
  .chip{font-size:12.5px;padding:6px 12px}
  .cta-actions .btn{width:100%}
}
@media(min-width:992px){
  .sticky-cta{
    left:auto;right:26px;bottom:26px;width:330px;
    flex-direction:column;align-items:stretch;gap:10px;
    padding:20px;border:1px solid var(--line);border-radius:20px;
    background:rgba(11,18,32,.9);
    box-shadow:0 22px 56px -24px rgba(0,0,0,.95);
    opacity:0;transform:translateY(18px);pointer-events:none;
  }
  .sticky-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
  .sticky-cta .btn{flex:none;width:100%}
  .sticky-cta .sticky-note{font-size:13px;color:var(--text-3);text-align:center}
}

/* roulang page: category2 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --primary:#2FE0C0;
  --primary-2:#23C8E8;
  --accent:#FF8A3D;
  --surface:rgba(20,32,52,.72);
  --surface-soft:rgba(20,32,52,.45);
  --stroke:rgba(140,200,255,.16);
  --stroke-strong:rgba(47,224,192,.38);
  --text-1:#EAF2FB;
  --text-2:#A9BAD1;
  --text-3:#7A8CA6;
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --r-pill:999px;
  --shadow-card:0 18px 48px -28px rgba(0,10,30,.9);
  --shadow-glow:0 0 0 1px rgba(47,224,192,.35),0 10px 36px -14px rgba(47,224,192,.55);
  --maxw:1200px;
  --sec-pc:96px;
  --sec-mb:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background:var(--bg-0);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(720px 420px at 12% -6%,rgba(47,224,192,.14),transparent 65%),
    radial-gradient(640px 380px at 92% 4%,rgba(35,200,232,.10),transparent 70%);
  z-index:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:#7CF2DB;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;box-shadow:0 0 0 6px rgba(47,224,192,.18);border-radius:6px;}

.container{max-width:var(--maxw)!important;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px;}}

/* ---------- 通用标题与区块 ---------- */
.section{padding:var(--sec-mb) 0;position:relative;z-index:1;}
@media(min-width:992px){.section{padding:var(--sec-pc) 0;}}
.section--alt{background:var(--bg-1);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--primary);
  padding:6px 14px;border:1px solid var(--stroke-strong);border-radius:var(--r-pill);
  background:rgba(47,224,192,.06);margin-bottom:16px;
}
.eyebrow i{font-size:11px;}
h1,.h1{font-size:clamp(28px,4.4vw,52px);line-height:1.2;font-weight:800;letter-spacing:-.01em;}
h2,.h2{font-size:clamp(22px,3vw,34px);line-height:1.3;font-weight:700;}
h3,.h3{font-size:clamp(18px,2vw,22px);line-height:1.4;font-weight:700;}
.lead{color:var(--text-2);font-size:16px;margin-top:16px;}
.muted{color:var(--text-3);font-size:14px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .2s ease,box-shadow .22s ease,background .22s ease,color .2s ease,border-color .2s ease;
  line-height:1.4;
}
.btn-glow{
  background:linear-gradient(120deg,#2FE0C0 0%,#23C8E8 100%);
  color:#04141A!important;font-weight:700;
  box-shadow:var(--shadow-glow);
}
.btn-glow:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,192,.45),0 16px 40px -12px rgba(47,224,192,.65);}
.btn-glow:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{
  background:transparent;color:var(--text-1)!important;
  border:1px solid var(--stroke);
}
.btn-ghost:hover{background:rgba(47,224,192,.08);border-color:var(--stroke-strong);color:var(--text-1)!important;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(6,10,18,.35);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{
  background:rgba(6,10,18,.86);
  border-bottom-color:var(--stroke);
  box-shadow:0 12px 30px -22px rgba(0,0,0,.9);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1)!important;}
.brand-mark{
  width:14px;height:22px;border-radius:4px;
  background:linear-gradient(150deg,#2FE0C0,#23C8E8);
  box-shadow:0 0 18px -2px rgba(47,224,192,.8);
  transform:skewX(-12deg);
  flex:0 0 auto;
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-a{
  position:relative;color:var(--text-2)!important;font-size:15px;font-weight:500;
  padding:10px 14px;border-radius:10px;white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-a:hover{color:var(--text-1)!important;background:rgba(140,200,255,.07);}
.nav-a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#2FE0C0,#23C8E8);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-a:hover::after,.nav-a.active::after{transform:scaleX(1);}
.nav-a.active{color:var(--text-1)!important;font-weight:700;}
.nav-side{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(20,32,52,.7);border:1px solid var(--stroke);
  color:var(--text-1);font-size:17px;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--stroke-strong);color:var(--primary);}

@media(max-width:991px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:72px;right:0;width:min(320px,86vw);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:18px;border-radius:0 0 18px 18px;
    background:rgba(8,14,26,.97);
    border:1px solid var(--stroke);border-top:none;
    box-shadow:0 26px 46px -26px rgba(0,0,0,.95);
    transform:translateX(105%);transition:transform .28s ease;
    max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .main-nav.open{transform:translateX(0);}
  .nav-a{padding:13px 14px;font-size:16px;}
  .nav-a::after{display:none;}
  .nav-a.active{background:rgba(47,224,192,.10);}
  .nav-cta{display:none;}
}

/* ---------- 分类页头部 ---------- */
.page-head{
  position:relative;z-index:1;
  padding:132px 0 46px;
  min-height:240px;
  background:
    linear-gradient(100deg,rgba(6,10,18,.96) 0%,rgba(6,10,18,.78) 48%,rgba(11,18,32,.62) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  background-color:#0A1120;
  border-bottom:1px solid var(--stroke);
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--primary);}
.crumbs i{font-size:10px;opacity:.7;}
.page-head h1{max-width:800px;}
.page-head .lead{max-width:680px;}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:var(--r-pill);
  border:1px solid var(--stroke);background:rgba(20,32,52,.6);
  font-size:13px;color:var(--text-2);
}
.tag i{color:var(--primary);font-size:11px;}
.tag.accent{border-color:rgba(255,138,61,.4);}
.tag.accent i{color:var(--accent);}

/* ---------- 概览数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
  margin-top:36px;
}
@media(min-width:768px){.stat-strip{grid-template-columns:repeat(4,1fr);gap:18px;}}
.stat{
  padding:18px 20px;border-radius:var(--r-card);
  border:1px solid var(--stroke);background:var(--surface-soft);
  backdrop-filter:blur(14px);
}
.stat b{display:block;font-size:24px;font-weight:800;color:var(--primary);line-height:1.3;}
.stat span{display:block;font-size:13px;color:var(--text-3);margin-top:4px;}

/* ---------- 时间线步骤 ---------- */
.timeline{position:relative;max-width:940px;margin:0 auto;}
.timeline::before{
  content:"";position:absolute;left:27px;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(47,224,192,.85),rgba(47,224,192,.08));
}
.tl-item{position:relative;padding:0 0 34px 74px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:0;top:0;width:56px;height:56px;border-radius:16px;
  display:grid;place-items:center;font-weight:800;font-size:17px;color:var(--primary);
  background:rgba(11,18,32,.9);border:1px solid var(--stroke-strong);
  backdrop-filter:blur(12px);letter-spacing:.02em;
}
.tl-card{
  background:var(--surface);border:1px solid var(--stroke);border-radius:var(--r-card);
  padding:24px 26px;backdrop-filter:blur(18px) saturate(120%);
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.tl-card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);box-shadow:0 24px 56px -30px rgba(47,224,192,.5);}
.tl-card h3{margin-bottom:10px;}
.tl-card p{color:var(--text-2);font-size:15px;}
.tl-meta{display:grid;gap:8px;margin-top:16px;padding-top:16px;border-top:1px dashed rgba(140,200,255,.18);}
.tl-meta div{display:flex;gap:10px;font-size:14px;color:var(--text-2);}
.tl-meta b{color:var(--text-1);font-weight:600;flex:0 0 68px;}
.tl-meta i{color:var(--primary);font-size:12px;margin-top:6px;}
@media(max-width:575px){
  .timeline::before{left:21px;}
  .tl-item{padding-left:58px;}
  .tl-dot{width:44px;height:44px;border-radius:13px;font-size:15px;}
  .tl-card{padding:20px;}
}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:30px;align-items:center;}
@media(min-width:992px){.split{grid-template-columns:1fr 1fr;gap:52px;}}
.split-media{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--stroke);
  background:#0E1727;box-shadow:var(--shadow-card);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split-text h2{margin-bottom:16px;}
.split-text p{color:var(--text-2);font-size:15px;margin-bottom:14px;}
.check-list{display:grid;gap:12px;margin-top:20px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.check-list i{color:var(--primary);font-size:13px;margin-top:7px;flex:0 0 auto;}

/* ---------- 准备清单卡 ---------- */
.prep-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:768px){.prep-grid{grid-template-columns:1fr 1fr;}}
.prep-card{
  border:1px solid var(--stroke);border-radius:var(--r-card);overflow:hidden;
  background:var(--surface-soft);display:flex;flex-direction:column;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.prep-card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);box-shadow:0 24px 52px -30px rgba(47,224,192,.55);}
.prep-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.prep-body{padding:24px 26px;}
.prep-body h3{margin-bottom:10px;}
.prep-body p{color:var(--text-2);font-size:15px;}
.prep-body ul{margin-top:16px;display:grid;gap:9px;}
.prep-body li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2);}
.prep-body li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);
}

/* ---------- 交叉链接 ---------- */
.cross{
  border:1px solid var(--stroke);border-radius:var(--r-card);
  padding:28px;background:linear-gradient(120deg,rgba(20,32,52,.72),rgba(11,18,32,.6));
  backdrop-filter:blur(16px);
}
.cross h2{font-size:20px;margin-bottom:8px;}
.cross p{color:var(--text-3);font-size:14px;margin-bottom:18px;}
.pill-row{display:flex;flex-wrap:wrap;gap:12px;}
.pill{
  display:inline-flex;align-items:center;gap:9px;
  padding:11px 20px;border-radius:var(--r-pill);
  border:1px solid var(--stroke);background:rgba(6,10,18,.5);
  color:var(--text-1)!important;font-size:14px;font-weight:500;
  transition:border-color .2s ease,background .2s ease,transform .2s ease,color .2s ease;
}
.pill i{color:var(--primary);font-size:12px;}
.pill:hover{border-color:var(--stroke-strong);background:rgba(47,224,192,.1);transform:translateY(-2px);}
.pill.current{border-color:rgba(47,224,192,.5);background:rgba(47,224,192,.12);color:var(--primary)!important;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;display:grid;gap:14px;}
.faq-item{
  border:1px solid var(--stroke);border-radius:14px;background:var(--surface-soft);
  overflow:hidden;transition:border-color .22s ease,background .22s ease;
}
.faq-item.open{border-color:var(--stroke-strong);background:rgba(20,32,52,.68);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:none;
  color:var(--text-1);font-size:16px;font-weight:600;text-align:left;cursor:pointer;
}
.faq-q i{color:var(--primary);font-size:14px;transition:transform .25s ease;flex:0 0 auto;}
.faq-item.open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 22px 20px;color:var(--text-2);font-size:15px;}

/* ---------- 底部 CTA ---------- */
.cta-panel{
  border:1px solid var(--stroke);border-radius:24px;
  padding:44px 28px;text-align:center;
  background:
    radial-gradient(520px 240px at 50% 0%,rgba(47,224,192,.16),transparent 70%),
    linear-gradient(140deg,rgba(20,32,52,.85),rgba(9,15,28,.8));
  backdrop-filter:blur(18px) saturate(120%);
}
@media(min-width:768px){.cta-panel{padding:60px 56px;}}
.cta-panel h2{margin-bottom:14px;}
.cta-panel p{color:var(--text-2);max-width:640px;margin:0 auto 28px;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--stroke);background:var(--bg-1);padding:64px 0 0;position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:44px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:992px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:16px;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:grid;gap:11px;}
.footer-col a,.footer-col span{color:var(--text-2);font-size:14px;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--stroke);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:var(--text-3);font-size:13px;
}

/* ---------- 底部固定转化条 ---------- */
.float-cta{
  position:fixed;z-index:900;
  left:0;right:0;bottom:0;
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,10,18,.94);
  border-top:1px solid var(--stroke);
  backdrop-filter:blur(16px);
  transform:translateY(120%);
  transition:transform .3s ease;
  display:flex;align-items:center;gap:12px;
}
.float-cta.show{transform:translateY(0);}
.float-cta .float-txt{display:none;}
.float-cta .float-actions{display:flex;gap:10px;width:100%;}
.float-cta .float-actions .btn{flex:1;padding:11px 14px;font-size:14px;}
@media(min-width:992px){
  .float-cta{
    left:auto;right:28px;bottom:28px;width:352px;
    padding:20px;border-radius:20px;border:1px solid var(--stroke);
    background:var(--surface);box-shadow:var(--shadow-card);
    flex-direction:column;align-items:stretch;gap:14px;
  }
  .float-cta .float-txt{display:block;}
  .float-cta .float-txt strong{display:block;font-size:15px;margin-bottom:4px;}
  .float-cta .float-txt span{display:block;font-size:13px;color:var(--text-3);}
  .float-cta .float-actions .btn{flex:1;}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease;}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  .btn,.tl-card,.prep-card,.pill{transition:none;}
}

/* roulang page: category4 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --primary:#2FE0C0;
  --primary-2:#23C8E8;
  --accent:#FF8A3D;
  --surface:rgba(20,32,52,.72);
  --surface-solid:#101B2C;
  --line:rgba(140,200,255,.16);
  --line-strong:rgba(140,200,255,.32);
  --text-1:#EAF2FB;
  --text-2:#A9BAD1;
  --text-3:#7A8CA6;
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --r-pill:999px;
  --sh-card:0 18px 48px -28px rgba(0,10,30,.9);
  --sh-glow:0 0 0 1px rgba(47,224,192,.35),0 10px 36px -14px rgba(47,224,192,.55);
  --container:1200px;
  --sec-gap:96px;
  --font-cn:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text-1);}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(47,224,192,.55);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,224,192,.3);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}
@media(min-width:768px){.container{padding:0 24px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,10,18,.55);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background-color .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,18,.9);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px -22px rgba(0,0,0,.95);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.01em;}
.brand-mark{
  width:12px;height:24px;border-radius:3px;
  background:linear-gradient(150deg,var(--primary),var(--primary-2));
  transform:skewX(-12deg);
  box-shadow:0 0 18px -4px rgba(47,224,192,.8);
  flex:none;
}
.brand-text{color:var(--text-1);}
.main-nav{display:none;align-items:center;gap:4px;}
.nav-a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  white-space:nowrap;
}
.nav-a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
}
.nav-a:hover{color:var(--text-1);background:rgba(47,224,192,.07);}
.nav-a:hover::after,.nav-a.active::after{transform:scaleX(1);}
.nav-a.active{color:var(--text-1);font-weight:600;}
.nav-side{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;
  border-radius:12px;
  background:rgba(20,32,52,.7);
  border:1px solid var(--line);
  color:var(--text-1);
  font-size:17px;
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--primary);}
@media(min-width:992px){
  .main-nav{display:flex;}
  .nav-toggle{display:none;}
}
.nav-cta{display:none;}
@media(min-width:992px){.nav-cta{display:inline-flex;}}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:1200;
  background:rgba(4,8,16,.68);
  backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;
  transition:opacity .26s ease,visibility .26s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:1300;
  width:min(84vw,340px);
  background:linear-gradient(180deg,#0C1526,#080E1A);
  border-left:1px solid var(--line);
  padding:20px;
  transform:translateX(102%);
  transition:transform .3s ease;
  display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;
  background:transparent;border:1px solid var(--line);
  color:var(--text-2);font-size:16px;cursor:pointer;
}
.drawer-close:hover{color:var(--primary);border-color:var(--line-strong);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:12px 14px;
  border-radius:12px;
  color:var(--text-2);
  border:1px solid transparent;
  font-size:15px;
}
.drawer-nav a:hover{color:var(--text-1);background:rgba(47,224,192,.07);}
.drawer-nav a.active{
  color:var(--text-1);
  border-color:var(--line-strong);
  background:rgba(47,224,192,.1);
  font-weight:600;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn-glow{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04211C;
  box-shadow:var(--sh-glow);
}
.btn-glow:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,192,.5),0 16px 40px -12px rgba(47,224,192,.7);}
.btn-glow:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{
  background:transparent;
  color:var(--text-1);
  border-color:var(--line-strong);
}
.btn-ghost:hover{background:rgba(47,224,192,.09);border-color:var(--primary);transform:translateY(-2px);color:var(--text-1);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-lg{padding:16px 34px;font-size:16px;}

/* ---------- 面包屑 & 页头 ---------- */
.page-hero{
  position:relative;
  padding:52px 0 46px;
  background-image:linear-gradient(100deg,rgba(6,10,18,.96) 0%,rgba(6,10,18,.78) 46%,rgba(6,10,18,.55) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,224,192,.45),transparent);
}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;
  color:var(--text-3);
  margin-bottom:18px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--text-3);opacity:.6;}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:820px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.page-hero .lead{
  margin-top:16px;
  max-width:700px;
  color:var(--text-2);
  font-size:16px;
  margin-bottom:0;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(20,32,52,.55);
  color:var(--text-2);
  font-size:13.5px;
}
.tag-pill i{color:var(--primary);font-size:12px;}

/* ---------- 板块 ---------- */
.section{padding:var(--sec-gap) 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--primary);
  font-weight:700;
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(23px,2.8vw,32px);
  line-height:1.32;
  font-weight:700;
}
.section-head p{margin-top:14px;color:var(--text-2);margin-bottom:0;font-size:15.5px;}
.h2-bar{position:relative;padding-left:16px;}
.h2-bar::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));
}

/* ---------- 大图分栏 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:center;
}
@media(min-width:992px){
  .split{grid-template-columns:1.05fr .95fr;gap:56px;}
}
.split-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  background:#0E1725;
}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;}
.split-media .media-badge{
  position:absolute;left:16px;top:16px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(6,10,18,.78);
  border:1px solid rgba(47,224,192,.42);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
  backdrop-filter:blur(8px);
}
.split-body h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.34;
  margin-bottom:18px;
}
.split-body p{color:var(--text-2);font-size:15.5px;}
.point-list{margin-top:26px;display:flex;flex-direction:column;gap:18px;}
.point-list li{display:flex;gap:14px;}
.point-list .p-num{
  flex:none;
  width:34px;height:34px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,224,192,.12);
  border:1px solid rgba(47,224,192,.3);
  color:var(--primary);
  font-weight:700;
  font-size:14px;
}
.point-list h3{font-size:16.5px;margin-bottom:4px;font-weight:700;}
.point-list p{margin:0;font-size:14.8px;color:var(--text-2);}
.split-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}

/* ---------- 异常对照行 ---------- */
.issue-list{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:rgba(16,27,44,.6);
}
.issue-row{
  display:grid;
  grid-template-columns:1fr;
  gap:10px;
  padding:22px 24px;
  border-bottom:1px solid var(--line);
  transition:background-color .22s ease;
}
.issue-row:last-child{border-bottom:none;}
.issue-row:hover{background:rgba(47,224,192,.06);}
.issue-sym{display:flex;align-items:flex-start;gap:12px;}
.issue-sym i{color:var(--accent);margin-top:6px;font-size:14px;}
.issue-sym strong{font-size:16.5px;font-weight:700;display:block;}
.issue-sym span{display:block;color:var(--text-3);font-size:13.5px;margin-top:3px;}
.issue-act{color:var(--text-2);font-size:14.8px;line-height:1.75;}
.issue-act b{color:var(--primary);font-weight:600;}
@media(min-width:768px){
  .issue-row{grid-template-columns:.9fr 1.1fr;gap:28px;align-items:start;}
  .issue-act{border-left:1px solid var(--line);padding-left:28px;}
}

/* ---------- 勾选清单 ---------- */
.check-wrap{
  display:grid;grid-template-columns:1fr;gap:24px;
}
@media(min-width:992px){.check-wrap{grid-template-columns:1.15fr .85fr;gap:48px;align-items:start;}}
.check-grid{display:grid;grid-template-columns:1fr;gap:16px;}
@media(min-width:640px){.check-grid{grid-template-columns:1fr 1fr;}}
.check-item{
  display:flex;gap:12px;
  padding:18px 20px;
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(16,27,44,.5);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.check-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-card);}
.check-item i{color:var(--primary);margin-top:5px;flex:none;}
.check-item h3{font-size:15.5px;margin-bottom:5px;font-weight:700;}
.check-item p{margin:0;font-size:14.2px;color:var(--text-2);}
.aside-media{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:#0E1725;
  box-shadow:var(--sh-card);
}
.aside-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.aside-media .cap{
  padding:14px 18px;
  font-size:13.5px;
  color:var(--text-3);
  border-top:1px solid var(--line);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(16,27,44,.5);
  overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item.is-open{
  border-color:rgba(47,224,192,.55);
  box-shadow:0 0 0 1px rgba(47,224,192,.18);
}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;
  background:transparent;
  border:0;
  color:var(--text-1);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  line-height:1.6;
}
.faq-q i{color:var(--primary);transition:transform .26s ease;flex:none;font-size:14px;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.is-open .faq-a{max-height:340px;}
.faq-a-inner{padding:0 22px 22px;color:var(--text-2);font-size:15px;line-height:1.85;}

/* ---------- 交叉链接 ---------- */
.cross{padding:48px 0;border-top:1px solid var(--line);}
.cross-inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
}
.cross-label{color:var(--text-3);font-size:14px;margin-right:4px;}
.cross-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:14.5px;
  background:rgba(16,27,44,.5);
  transition:transform .2s ease,border-color .2s ease,color .2s ease,background-color .2s ease;
}
.cross-pill i{font-size:12px;color:var(--primary);}
.cross-pill:hover{
  transform:translateY(-3px);
  border-color:var(--primary);
  color:var(--text-1);
  background:rgba(47,224,192,.08);
}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;
  border-radius:24px;
  padding:52px 28px;
  text-align:center;
  background:linear-gradient(140deg,rgba(20,32,52,.86),rgba(10,18,32,.86));
  border:1px solid var(--line-strong);
  backdrop-filter:blur(18px) saturate(120%);
  overflow:hidden;
}
.cta-panel::before{
  content:"";
  position:absolute;inset:-40% -10% auto -10%;
  height:70%;
  background:radial-gradient(60% 70% at 50% 0%,rgba(47,224,192,.22),transparent 70%);
  pointer-events:none;
}
.cta-panel h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  margin-bottom:16px;
  position:relative;
}
.cta-panel p{
  color:var(--text-2);
  max-width:620px;
  margin:0 auto 30px;
  font-size:15.5px;
  position:relative;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;position:relative;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#050810;
  border-top:1px solid var(--line);
  padding:66px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand p{
  color:var(--text-2);
  font-size:14.2px;
  margin-top:16px;
  max-width:330px;
  line-height:1.8;
}
.footer-col h4{
  font-size:14.5px;
  font-weight:700;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{color:var(--text-2);font-size:14.2px;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:52px;
  padding:22px 0;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  color:var(--text-3);
  font-size:13.5px;
}

/* ---------- 底部固定转化条 ---------- */
.sticky-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1100;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(8,13,24,.94);
  border-top:1px solid var(--line);
  backdrop-filter:blur(14px);
  transform:translateY(120%);
  transition:transform .32s ease;
}
.sticky-bar.is-on{transform:translateY(0);}
.sticky-inner{
  display:flex;align-items:center;gap:12px;
  max-width:var(--container);
  margin:0 auto;
}
.sticky-text{
  flex:1;
  font-size:13.8px;
  color:var(--text-2);
  line-height:1.4;
}
body{padding-bottom:0;}
@media(max-width:991px){body{padding-bottom:74px;}}
@media(min-width:992px){
  .sticky-bar{
    left:auto;right:26px;bottom:26px;
    padding:16px 18px;
    border:1px solid var(--line-strong);
    border-radius:18px;
    background:var(--surface);
    box-shadow:var(--sh-card);
    max-width:360px;
  }
  .sticky-bar.is-on{transform:translateY(0);}
  .sticky-inner{flex-wrap:wrap;gap:10px;}
  .sticky-text{flex:1 1 100%;font-size:13.6px;}
}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.is-visible{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none !important;transition-duration:.01ms !important;}
}
@media(max-width:767px){
  :root{--sec-gap:64px;}
  .page-hero{padding:38px 0 34px;}
  .cta-panel{padding:40px 20px;}
  .site-footer{padding-top:48px;}
}