/* roulang page: index */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-deep:#04060C;
  --c-primary:#12E3C4;
  --c-primary-dark:#0AAE97;
  --c-primary-a12:rgba(18,227,196,.12);
  --c-primary-a35:rgba(18,227,196,.35);
  --c-accent:#FF6A2B;
  --c-accent-dark:#E14E12;
  --c-tertiary:#7FB2FF;
  --t-1:#EAF0FF;
  --t-2:#9AA7C2;
  --t-3:#66738C;
  --panel:rgba(18,26,44,.62);
  --panel-solid:#101728;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --r-card:16px;
  --r-panel:22px;
  --r-img:14px;
  --r-input:10px;
  --sh-1:0 2px 8px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(0,0,0,.45);
  --sh-glow:0 8px 28px rgba(18,227,196,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1280px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed","Oswald","DIN Alternate","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(28px,5vw,48px);line-height:1.22;font-weight:700;}
h2{font-size:clamp(24px,3.4vw,34px);line-height:1.28;font-weight:700;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{color:var(--t-2);}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,14,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled{background:rgba(5,7,14,.92);box-shadow:var(--sh-2);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s var(--ease);}
.site-header.scrolled .nav-wrap{height:60px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-dark));
  display:grid;place-items:center;
  box-shadow:var(--sh-glow);
}
.logo-mark span{width:12px;height:12px;border-radius:3px;background:#04120F;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--c-primary);}
.main-nav{margin-left:8px;flex:1 1 auto;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.main-nav a{
  display:block;padding:8px 14px;border-radius:999px;font-size:14.5px;color:var(--t-2);
  border:1px solid transparent;transition:all .22s var(--ease);white-space:nowrap;
}
.main-nav a:hover{color:var(--t-1);background:rgba(255,255,255,.05);border-color:var(--line);}
.main-nav a.active{
  color:var(--c-primary);background:var(--c-primary-a12);border-color:var(--c-primary-a35);
  position:relative;
}
.main-nav a.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-14px;
  width:22px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;border:1px solid var(--line);
  background:rgba(255,255,255,.03);transition:all .22s var(--ease);
}
.icon-btn:hover{border-color:var(--c-primary-a35);background:var(--c-primary-a12);}
.icon-btn svg{width:18px;height:18px;stroke:var(--t-2);fill:none;stroke-width:1.6;}
.icon-btn:hover svg{stroke:var(--c-primary);}
.burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);position:relative;}
.burger i{
  position:absolute;left:12px;width:18px;height:1.8px;border-radius:2px;background:var(--t-1);
  transition:all .25s var(--ease);
}
.burger i:nth-child(1){top:14px;}
.burger i:nth-child(2){top:20px;}
.burger i:nth-child(3){top:26px;}
.burger.open i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger.open i:nth-child(2){opacity:0;}
.burger.open i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.drawer{
  position:fixed;inset:0;z-index:70;pointer-events:none;
}
.drawer-mask{
  position:absolute;inset:0;background:rgba(3,5,10,.6);opacity:0;transition:opacity .25s var(--ease);
}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:88%;max-width:360px;
  background:rgba(10,15,28,.96);backdrop-filter:blur(14px);
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:24px 22px;overflow-y:auto;
}
.drawer.open{pointer-events:auto;}
.drawer.open .drawer-mask{opacity:1;}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-title{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--t-3);margin-bottom:10px;}
.drawer-nav a{
  display:block;line-height:52px;padding:0 14px;border-radius:12px;color:var(--t-2);font-size:15.5px;
  border-left:3px solid transparent;transition:all .2s var(--ease);
}
.drawer-nav a:hover{background:rgba(255,255,255,.04);color:var(--t-1);}
.drawer-nav a.active{color:var(--c-primary);border-left-color:var(--c-primary);background:var(--c-primary-a12);}
.drawer-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-input);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),opacity .22s var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,#FF7A3D,#FF4A16);color:#fff;
  box-shadow:0 6px 18px rgba(255,106,43,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(255,106,43,.38);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,.03);border:1px solid var(--line);color:var(--t-1);
}
.btn-ghost:hover{border-color:var(--c-primary-a35);background:var(--c-primary-a12);transform:translateY(-2px);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14.5px;font-weight:600;position:relative;
}
.btn-link::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;background:var(--c-primary);transition:width .22s var(--ease);
}
.btn-link:hover::after{width:100%;}
.btn[disabled],.btn.is-loading{opacity:.5;pointer-events:none;box-shadow:none;}

/* ---------- tag / badge ---------- */
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;border:1px solid var(--c-primary-a35);color:var(--c-primary);
  background:var(--c-primary-a12);white-space:nowrap;
}
.tag-blue{border-color:rgba(127,178,255,.35);color:var(--c-tertiary);background:rgba(127,178,255,.1);}
.tag-line{border-color:var(--line);color:var(--t-2);background:rgba(255,255,255,.03);}
.badge-hot{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:6px;
  background:var(--c-accent);color:#fff;font-size:12px;font-weight:600;
}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:76px 0 84px;
  background:
    radial-gradient(760px 420px at 12% 6%,rgba(18,227,196,.14),transparent 62%),
    radial-gradient(620px 380px at 92% 78%,rgba(127,178,255,.1),transparent 66%),
    linear-gradient(180deg,var(--bg-0),var(--bg-1));
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 26px);
  opacity:.06;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;min-height:520px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  border:1px solid var(--c-primary-a35);background:var(--c-primary-a12);color:var(--c-primary);
  font-size:13px;letter-spacing:.04em;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:block;}
.hero h1{margin:20px 0 18px;max-width:15em;}
.hero-sub{font-size:17px;line-height:1.8;max-width:34em;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 16px;}
.hero-note{font-size:12.5px;color:var(--t-3);}
.hero-visual{position:relative;}
.hero-visual .hero-img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-panel);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.float-card{
  position:absolute;background:var(--panel);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);
  padding:14px 16px;min-width:158px;
}
.float-card small{display:block;font-size:11.5px;color:var(--t-3);letter-spacing:.04em;}
.float-card strong{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;line-height:1.2;color:var(--t-1);}
.float-card strong em{font-style:normal;font-size:14px;color:var(--c-primary);margin-left:4px;}
.float-1{left:-18px;bottom:34px;}
.float-2{right:-14px;top:28px;}
.float-2 strong{color:var(--c-primary);}

/* ---------- trust strip ---------- */
.trust{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:26px 0;}
.trust-item{display:flex;align-items:center;gap:12px;}
.trust-item svg{width:22px;height:22px;flex:0 0 auto;stroke:var(--c-primary);fill:none;stroke-width:1.6;}
.trust-item b{display:block;font-size:15px;font-weight:600;}
.trust-item span{display:block;font-size:13px;color:var(--t-3);line-height:1.5;}

/* ---------- section ---------- */
.section{padding:92px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px;}
.section-head .head-left{position:relative;padding-left:16px;}
.section-head .head-left::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-dark));
}
.section-head p{margin-top:8px;font-size:14.5px;color:var(--t-3);}

/* ---------- feature cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  position:relative;display:flex;flex-direction:column;
  background:var(--panel);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,227,196,.7),transparent);
  opacity:0;transition:opacity .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--c-primary-a35);box-shadow:var(--sh-2);}
.card:hover::before{opacity:1;}
.card-media{aspect-ratio:16/10;width:100%;object-fit:cover;border-radius:0;border-bottom:1px solid var(--line);}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-tags{display:flex;gap:8px;flex-wrap:wrap;}
.card h3{font-size:19px;}
.card p{font-size:14.5px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-spec{
  display:flex;gap:18px;padding:12px 0;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);margin-top:2px;
}
.card-spec div{display:flex;flex-direction:column;}
.card-spec b{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:20px;line-height:1.2;}
.card-spec span{font-size:12px;color:var(--t-3);}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step;}
.step{
  position:relative;padding:26px 20px 24px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--c-primary-a35);}
.step-num{
  font-family:var(--font-num);font-size:32px;line-height:1;color:transparent;
  -webkit-text-stroke:1px var(--c-primary-a35);display:block;margin-bottom:14px;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.72;}
.step::after{
  content:"";position:absolute;right:-14px;top:50%;width:14px;height:1px;
  background:linear-gradient(90deg,var(--c-primary-a35),transparent);
}
.step:last-child::after{display:none;}

/* ---------- reviews ---------- */
.review-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:30px;}
.review-nav{display:flex;gap:10px;}
.review-track{
  display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 48px)/3);gap:24px;
  overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;scrollbar-width:none;
}
.review-track::-webkit-scrollbar{display:none;}
.review-card{
  scroll-snap-align:start;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:14px;min-height:236px;
}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{width:44px;height:44px;border-radius:50%;object-fit:cover;border:1px solid var(--c-primary-a35);}
.review-top b{display:block;font-size:15px;}
.review-top span{display:block;font-size:12.5px;color:var(--t-3);}
.stars{display:flex;gap:3px;}
.stars svg{width:15px;height:15px;fill:var(--c-primary);stroke:none;}
.review-card blockquote{
  margin:0;font-size:15px;line-height:1.8;color:var(--t-1);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.review-src{font-size:12.5px;color:var(--t-3);margin-top:auto;}
.dots{display:flex;gap:8px;justify-content:center;margin-top:18px;}
.dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.16);cursor:pointer;transition:all .22s var(--ease);}
.dots i.on{background:var(--c-primary);width:20px;border-radius:4px;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:
    radial-gradient(560px 320px at 18% 20%,rgba(255,106,43,.16),transparent 64%),
    radial-gradient(620px 360px at 86% 80%,rgba(18,227,196,.16),transparent 66%),
    var(--bg-deep);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;opacity:.14;
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:36px;
  margin:70px 0;padding:44px 44px;border-radius:var(--r-panel);
  background:var(--panel);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.cta-inner h2{margin-bottom:12px;}
.cta-inner p{max-width:44em;font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;gap:12px;min-height:220px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--c-primary-a35);box-shadow:var(--sh-2);}
.news-title{font-size:18px;}
.news-title a{transition:color .2s var(--ease);}
.news-title a:hover{color:var(--c-primary);}
.news-excerpt{
  font-size:14.5px;line-height:1.75;color:var(--t-2);
  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:14px;border-top:1px solid var(--line);font-size:13px;color:var(--t-3);
}
.news-link{color:var(--c-primary);font-weight:600;}
.news-link:hover{text-decoration:underline;}
.empty-state{
  grid-column:1/-1;min-height:240px;display:grid;place-items:center;
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  color:var(--t-3);font-size:15px;background:rgba(255,255,255,.02);
}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--t-1);
  transition:background .22s var(--ease),padding-left .22s var(--ease);
}
.faq-q .idx{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:14px;color:var(--c-primary);flex:0 0 auto;}
.faq-q .q-text{flex:1 1 auto;}
.faq-q .sign{
  position:relative;width:20px;height:20px;flex:0 0 auto;transition:transform .24s var(--ease);
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--t-2);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .sign::before{width:14px;height:1.6px;}
.faq-q .sign::after{width:1.6px;height:14px;}
.faq-item.open .faq-q{background:var(--c-primary-a12);padding-left:14px;box-shadow:inset 3px 0 0 var(--c-primary);}
.faq-item.open .faq-q .sign{transform:rotate(180deg);}
.faq-item.open .faq-q .sign::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
.faq-a p{padding:0 18px 22px 40px;font-size:15px;line-height:1.8;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid transparent;position:relative;padding:64px 0 0;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-primary),transparent);opacity:.6;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.foot-brand .logo-text{font-size:18px;margin-bottom:14px;display:inline-block;}
.foot-brand p{font-size:14px;line-height:1.75;max-width:24em;}
.foot-social{display:flex;gap:10px;margin-top:18px;}
.foot-col h4{font-size:15px;margin-bottom:16px;}
.foot-col ul{display:flex;flex-direction:column;gap:10px;}
.foot-col a{font-size:14px;color:var(--t-2);transition:color .2s var(--ease);}
.foot-col a:hover{color:var(--c-primary);}
.foot-contact li{display:flex;gap:10px;font-size:14px;color:var(--t-2);line-height:1.7;}
.foot-contact svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;stroke:var(--c-primary);fill:none;stroke-width:1.6;}
.foot-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--t-3);
}
.foot-bottom .links{display:flex;gap:16px;flex-wrap:wrap;}
.foot-bottom a:hover{color:var(--c-primary);}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .main-nav a{padding:8px 11px;font-size:14px;}
  .card-grid,.news-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step::after{display:none;}
  .review-track{grid-auto-columns:calc((100% - 24px)/2);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .hero{padding:60px 0 68px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;min-height:auto;}
  .hero-visual{order:2;}
  .float-1{left:8px;bottom:-16px;}
  .float-2{right:8px;top:-16px;}
  .section{padding:72px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;margin:56px 0;padding:34px 28px;}
}
@media (max-width:900px){
  .main-nav{display:none;}
  .burger{display:block;}
  .nav-actions .btn-primary{display:none;}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:18px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .hero{padding:48px 0 56px;}
  .hero-sub{font-size:15.5px;}
  .card-grid,.news-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .review-track{grid-auto-columns:86%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .foot-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .faq-q{font-size:16px;}
  .faq-a p{padding-left:18px;}
}
@media (max-width:480px){
  .logo-text{font-size:15px;}
  .float-card{min-width:132px;padding:10px 12px;}
  .float-card strong{font-size:22px;}
  .hero-cta .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-deep:#04060C;
  --c-primary:#12E3C4;
  --c-primary-d:#0AAE97;
  --c-primary-12:rgba(18,227,196,.12);
  --c-primary-35:rgba(18,227,196,.35);
  --c-accent:#FF6A2B;
  --c-accent-d:#E14E12;
  --c-tertiary:#7FB2FF;
  --t-1:#EAF0FF;
  --t-2:#9AA7C2;
  --t-3:#66738C;
  --panel:rgba(18,26,44,.62);
  --panel-solid:#101728;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --sh-1:0 2px 8px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(0,0,0,.45);
  --sh-glow:0 8px 28px rgba(18,227,196,.28);
  --sh-accent:0 8px 26px rgba(255,106,43,.34);
  --r-card:16px;
  --r-panel:22px;
  --r-img:14px;
  --r-input:10px;
  --r-btn:10px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed","DIN Alternate","Oswald","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-tertiary);text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease);}
a:hover{color:var(--c-primary);}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;}
p{margin:0 0 1.15em;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(5,7,14,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),height .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(5,7,14,.9);
  box-shadow:var(--sh-2);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s var(--ease);}
.site-header.is-scrolled .nav-wrap{height:60px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--t-1);font-weight:800;font-size:18px;flex:0 0 auto;}
.logo:hover{color:var(--t-1);}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-d));
  display:grid;place-items:center;box-shadow:0 6px 18px rgba(18,227,196,.28);
}
.logo-mark span{width:12px;height:12px;border-radius:3px;background:rgba(5,7,14,.86);transform:rotate(45deg);}
.logo-text em{font-style:normal;color:var(--c-primary);}
.main-nav{margin-left:auto;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.main-nav a{
  display:block;padding:9px 14px;border-radius:999px;
  color:var(--t-2);font-size:15px;position:relative;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);opacity:0;transform:scaleX(.4);transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.main-nav a:hover{color:var(--t-1);background:rgba(255,255,255,.05);}
.main-nav a.active{color:var(--c-primary);background:var(--c-primary-12);}
.main-nav a.active::after{opacity:1;transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--t-2);
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-35);background:rgba(18,227,196,.08);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:16px;font-weight:600;letter-spacing:.02em;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-sm{height:42px;padding:0 18px;font-size:15px;}
.btn-primary{
  background:linear-gradient(120deg,#FF7A3D,#FF4A16);color:#fff;
  box-shadow:0 6px 18px rgba(255,106,43,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-accent);filter:brightness(1.06);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-glass{
  background:rgba(255,255,255,.05);border-color:var(--line-strong);color:var(--t-1);
}
.btn-glass:hover{border-color:var(--c-primary-35);background:rgba(18,227,196,.08);color:var(--t-1);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;
  border-bottom:2px solid transparent;padding-bottom:2px;
}
.btn-text:hover{border-bottom-color:var(--c-primary);}
.burger{display:none;width:42px;height:42px;border-radius:10px;background:rgba(255,255,255,.05);border:1px solid var(--line);padding:0;}
.burger i{display:block;width:18px;height:2px;margin:3px auto;background:var(--t-1);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.burger.is-open i:nth-child(1){transform:translateY(5px) rotate(45deg);}
.burger.is-open i:nth-child(2){opacity:0;}
.burger.is-open i:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:44px 0 40px;
  background:
    radial-gradient(760px 340px at 12% -10%,rgba(18,227,196,.14),transparent 68%),
    radial-gradient(620px 300px at 92% 0%,rgba(127,178,255,.10),transparent 70%),
    var(--bg-1);
  border-bottom:1px solid var(--line);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:repeating-linear-gradient(115deg,#fff 0 2px,transparent 2px 26px);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t-3);position:relative;z-index:1;}
.crumbs a{color:var(--t-2);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs span.sep{color:var(--t-3);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;margin:22px 0 16px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  color:var(--c-primary);background:var(--c-primary-12);border:1px solid var(--c-primary-35);
  position:relative;z-index:1;
}
.article-hero h1{
  font-size:clamp(28px,4.4vw,46px);line-height:1.22;max-width:960px;position:relative;z-index:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.hero-sub{margin-top:18px;max-width:760px;color:var(--t-2);font-size:17px;position:relative;z-index:1;}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:22px;font-size:14px;color:var(--t-3);position:relative;z-index:1;
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--t-3);display:inline-block;}

/* ---------- layout ---------- */
.page-body{padding:64px 0 88px;}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:40px;align-items:start;}

.cover-wrap{margin-bottom:36px;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.cover-cap{padding:12px 18px;font-size:13px;color:var(--t-3);background:var(--bg-1);}

/* ---------- prose ---------- */
.prose{font-size:17px;line-height:1.9;color:#DCE4F7;}
.prose h2{
  font-size:clamp(22px,2.6vw,28px);color:var(--t-1);
  margin:44px 0 16px;padding-left:14px;border-left:3px solid var(--c-primary);
}
.prose h3{font-size:20px;color:var(--t-1);margin:30px 0 12px;}
.prose h4{font-size:17px;color:var(--t-1);margin:24px 0 10px;}
.prose p{margin:0 0 1.2em;}
.prose ul,.prose ol{margin:0 0 1.3em;padding-left:2px;}
.prose ul li{position:relative;padding-left:18px;margin-bottom:8px;}
.prose ul li::before{content:"·";position:absolute;left:2px;color:var(--c-primary);font-weight:700;}
.prose ol{counter-reset:n;}
.prose ol li{position:relative;padding-left:26px;margin-bottom:10px;counter-increment:n;}
.prose ol li::before{
  content:counter(n,decimal-leading-zero);position:absolute;left:0;top:0;
  font-family:var(--font-num);color:var(--c-primary);font-size:14px;line-height:1.9;
}
.prose blockquote{
  margin:26px 0;padding:20px 22px;border-left:4px solid var(--c-primary);
  background:var(--panel);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--t-2);
}
.prose img{border-radius:var(--r-img);margin:24px auto;}
.prose figure{margin:26px 0;}
.prose figcaption{text-align:center;font-size:13px;color:var(--t-3);margin-top:10px;}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto;white-space:nowrap;background:var(--panel);border-radius:var(--r-card);}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;}
.prose th{color:var(--c-primary);font-weight:600;background:rgba(255,255,255,.03);}
.prose tr:nth-child(even) td{background:rgba(255,255,255,.03);}
.prose strong{color:var(--t-1);}
.prose a{border-bottom:1px solid var(--c-primary-35);}
.prose hr{border:0;height:1px;background:var(--line);margin:36px 0;}
.empty-box{
  padding:56px 28px;text-align:center;border:1px dashed var(--line-strong);
  border-radius:var(--r-panel);background:var(--panel);
}
.empty-box h2{font-size:22px;margin-bottom:10px;}
.empty-box p{color:var(--t-2);margin-bottom:20px;}

/* ---------- tags & nav ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 0;padding-top:26px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--c-primary);border:1px solid var(--c-primary-35);background:var(--c-primary-12);
}
.tag.alt{color:var(--c-tertiary);border-color:rgba(127,178,255,.35);background:rgba(127,178,255,.10);}
.postnav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:32px;}
.postnav a{
  display:block;padding:18px 20px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line);color:var(--t-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.postnav a:hover{transform:translateY(-4px);border-color:var(--c-primary-35);box-shadow:var(--sh-2);color:var(--t-1);}
.postnav small{display:block;font-size:12px;color:var(--t-3);letter-spacing:.08em;text-transform:uppercase;margin-bottom:6px;}
.postnav strong{font-size:16px;font-weight:600;}

/* ---------- sidebar ---------- */
.side{display:grid;gap:22px;position:sticky;top:96px;}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);padding:22px;box-shadow:var(--sh-1);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);}
.side-card h3{font-size:17px;margin-bottom:14px;}
.side-card ul{display:grid;gap:8px;}
.side-card li a{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:10px 12px;border-radius:10px;color:var(--t-2);font-size:15px;
  background:rgba(255,255,255,.03);border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.side-card li a:hover{color:var(--c-primary);background:rgba(18,227,196,.08);border-color:var(--c-primary-35);}
.side-card li a i{font-style:normal;color:var(--t-3);font-family:var(--font-num);font-size:13px;}
.side-note{font-size:13px;color:var(--t-3);margin-top:12px;line-height:1.7;}

/* ---------- sections ---------- */
.section{padding:72px 0;}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{margin-bottom:34px;max-width:760px;}
.sec-head h2{font-size:clamp(24px,3.2vw,32px);}
.sec-head p{margin-top:10px;color:var(--t-2);font-size:15px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--c-primary-35);box-shadow:var(--sh-2);}
.card-img{position:relative;overflow:hidden;}
.card-img img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);}
.card:hover .card-img img{transform:scale(1.05);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-body h3{font-size:17px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{font-size:14px;color:var(--t-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{display:flex;gap:14px;font-size:13px;color:var(--t-3);margin-top:auto;padding-top:6px;}

/* ---------- FAQ ---------- */
.faq{max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  background:transparent;border:0;color:var(--t-1);font-size:17px;font-weight:600;
  padding:20px 4px;transition:background .22s var(--ease),padding .22s var(--ease);
}
.faq-q .sq{width:8px;height:8px;border-radius:2px;background:var(--c-primary);flex:0 0 auto;}
.faq-q .plus{margin-left:auto;color:var(--t-2);font-size:20px;line-height:1;transition:transform .24s var(--ease);}
.faq-item.is-open .faq-q{background:rgba(18,227,196,.06);box-shadow:inset 3px 0 0 var(--c-primary);padding-left:16px;}
.faq-item.is-open .faq-q .plus{transform:rotate(180deg);color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a p{padding:0 4px 22px 26px;color:var(--t-2);font-size:15.5px;margin:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;padding:64px 48px;border-radius:var(--r-panel);
  background:radial-gradient(560px 260px at 85% 0%,rgba(18,227,196,.16),transparent 70%),var(--bg-deep);
  border:1px solid var(--line-strong);box-shadow:var(--sh-2);text-align:center;
}
.cta-band::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;background-image:repeating-linear-gradient(115deg,#fff 0 2px,transparent 2px 30px);}
.cta-band h2{font-size:clamp(24px,3.4vw,34px);position:relative;z-index:1;}
.cta-band p{margin:14px auto 26px;max-width:640px;color:var(--t-2);position:relative;z-index:1;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;position:relative;z-index:1;}
.cta-note{margin-top:18px;font-size:13px;color:var(--t-3);position:relative;z-index:1;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid transparent;position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--c-primary),transparent 70%);}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding:64px 0 40px;}
.foot-brand .logo-text{font-size:19px;font-weight:800;color:var(--t-1);display:inline-block;margin-bottom:14px;}
.foot-brand .logo-text em{font-style:normal;color:var(--c-primary);}
.foot-brand p{font-size:14px;color:var(--t-2);max-width:320px;}
.foot-social{display:flex;gap:10px;margin-top:18px;}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--t-1);}
.foot-col ul{display:grid;gap:10px;}
.foot-col a{color:var(--t-2);font-size:14px;}
.foot-col a:hover{color:var(--c-primary);}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;color:var(--t-2);font-size:14px;}
.foot-contact svg{width:18px;height:18px;flex:0 0 auto;margin-top:4px;fill:none;stroke:var(--c-primary);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center;
  padding:20px 0 34px;border-top:1px solid var(--line);font-size:13px;color:var(--t-3);
}
.foot-bottom .links{display:flex;flex-wrap:wrap;gap:18px;}
.foot-bottom a{color:var(--t-3);}
.foot-bottom a:hover{color:var(--c-primary);}

/* ---------- mobile drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:400px;z-index:120;
  background:rgba(10,15,28,.94);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-left:1px solid var(--line-strong);transform:translateX(100%);
  transition:transform .26s var(--ease);padding:88px 22px 28px;display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0);}
.drawer a.drawer-link{
  display:flex;align-items:center;height:52px;padding:0 14px;border-radius:10px;
  color:var(--t-2);font-size:16px;border-left:3px solid transparent;
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{color:var(--c-primary);background:rgba(18,227,196,.08);border-left-color:var(--c-primary);}
.drawer .btn{margin-top:auto;}
.scrim{position:fixed;inset:0;background:rgba(3,5,10,.7);z-index:110;opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);}
.scrim.is-open{opacity:1;visibility:visible;}

@media (max-width:1200px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;gap:32px;}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}
@media (max-width:1024px){
  .layout{grid-template-columns:minmax(0,1fr);}
  .side{position:static;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:900px){
  .main-nav{display:none;}
  .burger{display:block;}
  .container{padding:0 24px;}
  .nav-actions .btn-sm{display:none;}
  .site-footer::before{opacity:.7;}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .page-body{padding:44px 0 64px;}
  .section{padding:56px 0;}
  .prose{font-size:16px;line-height:1.85;}
  .cta-band{padding:44px 22px;}
  .postnav{grid-template-columns:minmax(0,1fr);}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;padding:48px 0 32px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo{font-size:16px;}
  .logo-mark{width:28px;height:28px;}
  .grid-3{grid-template-columns:minmax(0,1fr);}
  .foot-grid{grid-template-columns:minmax(0,1fr);}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .meta-row{gap:8px 14px;font-size:13px;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-deep:#04060C;
  --c-primary:#12E3C4;
  --c-primary-d:#0AAE97;
  --c-primary-a12:rgba(18,227,196,.12);
  --c-primary-a35:rgba(18,227,196,.35);
  --c-accent:#FF6A2B;
  --c-accent-d:#E14E12;
  --c-tertiary:#7FB2FF;
  --t-1:#EAF0FF;
  --t-2:#9AA7C2;
  --t-3:#66738C;
  --panel:rgba(18,26,44,.62);
  --panel-solid:#101728;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --sh-1:0 2px 8px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(0,0,0,.45);
  --sh-glow:0 8px 28px rgba(18,227,196,.28);
  --r-card:16px;
  --r-panel:22px;
  --r-img:14px;
  --r-input:10px;
  --r-btn:10px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed","DIN Alternate","Oswald","PingFang SC",sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1280px;
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(720px 420px at 12% -6%,rgba(18,227,196,.10),transparent 62%),
    radial-gradient(640px 380px at 92% 4%,rgba(127,178,255,.07),transparent 66%);
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);}
a:hover{color:var(--c-primary);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--t-1);}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ===== 容器 ===== */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(5,7,14,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:height .24s var(--ease),background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(5,7,14,.9);
  box-shadow:var(--sh-2);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--t-1);
}
.logo-mark{
  width:30px;height:30px;
  display:grid;place-items:center;
  border-radius:9px;
  background:linear-gradient(140deg,rgba(18,227,196,.26),rgba(18,227,196,.06));
  border:1px solid var(--c-primary-a35);
}
.logo-mark span{
  width:11px;height:11px;
  border-radius:3px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-d));
  box-shadow:0 0 12px rgba(18,227,196,.6);
  transform:rotate(45deg);
}
.logo-text{
  font-size:18px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.logo-text em{font-style:normal;color:var(--c-primary);}
.main-nav ul{
  display:flex;
  align-items:center;
  gap:4px;
}
.main-nav a{
  display:inline-block;
  padding:9px 16px;
  border-radius:999px;
  font-size:15px;
  color:var(--t-2);
  border:1px solid transparent;
  position:relative;
  transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease);
}
.main-nav a:hover{
  color:var(--t-1);
  background:rgba(255,255,255,.05);
  border-color:var(--line);
}
.main-nav a.active{
  color:var(--c-primary);
  background:var(--c-primary-a12);
  border-color:var(--c-primary-a35);
}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-1px;
  transform:translateX(-50%);
  width:26px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:50%;
  color:var(--t-2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-a35);background:var(--c-primary-a12);}
.burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);}
.burger i{
  display:block;
  width:18px;height:2px;
  margin:3.5px auto;
  border-radius:2px;
  background:var(--t-1);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}

/* ===== 按钮体系 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:50px;
  padding:0 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn-primary{
  color:#fff;
  background:linear-gradient(120deg,#FF7A3D,#FF4A16);
  box-shadow:0 6px 18px rgba(255,106,43,.26);
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 10px 28px rgba(255,106,43,.38);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  color:var(--t-1);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{
  color:var(--c-primary);
  border-color:var(--c-primary-a35);
  background:var(--c-primary-a12);
}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-tertiary);
  font-size:14px;
  font-weight:600;
  position:relative;
  padding-bottom:2px;
}
.btn-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--c-primary);
  border-radius:2px;
  transition:width .24s var(--ease);
}
.btn-link:hover::after{width:100%;}

/* ===== 面包屑 ===== */
.crumb{
  padding:26px 0 0;
  font-size:13px;
  color:var(--t-3);
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
}
.crumb a{color:var(--t-2);}
.crumb span.sep{color:var(--t-3);}
.crumb strong{color:var(--c-primary);font-weight:600;}

/* ===== 频道 Hero ===== */
.page-hero{
  position:relative;
  margin-top:18px;
  border-radius:var(--r-panel);
  overflow:hidden;
  border:1px solid var(--line);
  background:
    linear-gradient(115deg,rgba(4,6,12,.94) 34%,rgba(4,6,12,.62) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  box-shadow:var(--sh-2);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(115deg,rgba(18,227,196,.055) 0 2px,transparent 2px 14px);
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  padding:52px 48px 46px;
  max-width:820px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--c-primary);
  background:var(--c-primary-a12);
  border:1px solid var(--c-primary-a35);
  text-transform:uppercase;
}
.tag-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 8px var(--c-primary);
}
.page-hero h1{
  margin:18px 0 0;
  font-size:clamp(28px,5vw,46px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.01em;
}
.page-hero p{
  margin-top:14px;
  font-size:16px;
  color:var(--t-2);
  max-width:640px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  margin-top:24px;
  font-size:13px;
  color:var(--t-3);
}
.hero-meta b{color:var(--t-1);font-weight:600;}

/* ===== 板块通用 ===== */
.section{padding:88px 0;}
.section.tight{padding-top:0;}
.section-alt{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(24px,3.4vw,34px);
  line-height:1.28;
  font-weight:800;
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-d));
}
.section-head .sub{
  margin-top:8px;
  font-size:14px;
  color:var(--t-3);
  padding-left:16px;
}

/* ===== 概述 ===== */
.overview{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  margin-top:8px;
}
.overview-card{
  padding:30px 30px 28px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  position:relative;
  overflow:hidden;
}
.overview-card::after{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
}
.overview-card h3{
  font-size:19px;
  font-weight:700;
  margin-bottom:12px;
}
.overview-card p{color:var(--t-2);font-size:15.5px;}
.overview-card .idx{
  font-family:var(--font-num);
  font-size:13px;
  color:var(--c-primary);
  letter-spacing:.14em;
  display:block;
  margin-bottom:10px;
}

/* ===== 图文交错 ===== */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:36px 0;
}
.split + .split{border-top:1px solid var(--line);}
.split.reverse .split-media{order:2;}
.split-media{
  border-radius:var(--r-panel);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  position:relative;
  background:var(--panel-solid);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.split-media .float-card{
  position:absolute;
  right:16px;bottom:16px;
  padding:12px 16px;
  border-radius:12px;
  background:rgba(10,15,28,.82);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:var(--sh-2);
}
.float-card .fc-k{font-size:12px;color:var(--t-3);display:block;}
.float-card .fc-v{font-size:22px;font-weight:700;color:var(--c-primary);}
.split-body h3{
  font-size:clamp(20px,2.2vw,24px);
  font-weight:700;
  line-height:1.4;
  margin-bottom:14px;
}
.split-body > p{color:var(--t-2);font-size:15.5px;}
.check-list{margin-top:20px;display:grid;gap:12px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--t-2);
}
.check-list li svg{
  flex:0 0 auto;
  width:18px;height:18px;
  margin-top:5px;
  color:var(--c-primary);
}
.check-list li b{color:var(--t-1);font-weight:600;}

/* ===== 步骤编号条 ===== */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:step;
}
.steps li{
  position:relative;
  padding:26px 22px 24px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.steps li::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  border-radius:2px 2px 0 0;
  background:linear-gradient(90deg,var(--c-primary),transparent);
  opacity:0;
  transition:opacity .22s var(--ease);
}
.steps li:hover{
  transform:translateY(-4px);
  border-color:var(--c-primary-a35);
  box-shadow:var(--sh-2);
}
.steps li:hover::before{opacity:1;}
.step-no{
  display:block;
  font-family:var(--font-num);
  font-size:30px;
  font-weight:700;
  color:rgba(18,227,196,.42);
  line-height:1;
  margin-bottom:14px;
}
.steps h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.steps p{font-size:14px;color:var(--t-2);line-height:1.75;}

/* ===== 功能速查 ===== */
.spec-list{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  overflow:hidden;
  background:var(--panel);
  box-shadow:var(--sh-1);
}
.spec-list li{
  display:grid;
  grid-template-columns:200px 1fr 200px;
  gap:18px;
  align-items:center;
  padding:20px 26px;
  border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease);
}
.spec-list li:last-child{border-bottom:0;}
.spec-list li:hover{background:rgba(18,227,196,.05);}
.spec-k{
  font-size:15px;
  font-weight:600;
  color:var(--t-1);
  display:flex;
  align-items:center;
  gap:10px;
}
.spec-k::before{
  content:"";
  width:8px;height:8px;
  border-radius:2px;
  background:var(--c-primary);
  flex:0 0 auto;
}
.spec-d{font-size:14px;color:var(--t-2);}
.spec-v{
  font-size:14px;
  color:var(--c-tertiary);
  text-align:right;
}

/* ===== FAQ ===== */
.faq{border-top:1px solid var(--line);}
.faq-item{
  border-bottom:1px solid var(--line);
  background:transparent;
  transition:background-color .24s var(--ease);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:14px;
  padding:22px 6px 22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--t-1);
  position:relative;
  transition:color .22s var(--ease),padding-left .24s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  width:8px;height:8px;
  flex:0 0 auto;
  border-radius:2px;
  background:var(--t-3);
  transition:background-color .22s var(--ease);
}
.faq-item summary .plus{
  margin-left:auto;
  width:22px;height:22px;
  flex:0 0 auto;
  position:relative;
  transition:transform .24s var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  border-radius:2px;
  top:50%;left:50%;
}
.faq-item summary .plus::before{width:12px;height:2px;transform:translate(-50%,-50%);}
.faq-item summary .plus::after{width:2px;height:12px;transform:translate(-50%,-50%);}
.faq-item[open] summary{color:var(--c-primary);padding-left:14px;}
.faq-item[open] summary::before{background:var(--c-primary);}
.faq-item[open] summary .plus{transform:rotate(180deg);}
.faq-item[open] summary .plus::after{opacity:0;}
.faq-item[open]{background:rgba(18,227,196,.06);border-left:3px solid var(--c-primary);padding-left:12px;}
.faq-answer{
  padding:0 26px 24px 30px;
  color:var(--t-2);
  font-size:15px;
  line-height:1.85;
  animation:fadeUp .3s var(--ease);
}
@keyframes fadeUp{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ===== 相关阅读卡片 ===== */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  overflow:hidden;
  position:relative;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card::after{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,227,196,.7),transparent);
  opacity:0;
  transition:opacity .22s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,227,196,.45);
  box-shadow:var(--sh-2);
}
.card:hover::after{opacity:1;}
.card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:0;
}
.card-body{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  color:var(--c-primary);
  border:1px solid var(--c-primary-a35);
  background:rgba(18,227,196,.08);
}
.chip.blue{color:var(--c-tertiary);border-color:rgba(127,178,255,.3);background:rgba(127,178,255,.08);}
.card-body h3{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body p{
  font-size:14px;
  color:var(--t-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:12px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--t-3);
}

/* ===== CTA 大板 ===== */
.cta-band{
  position:relative;
  border-radius:var(--r-panel);
  overflow:hidden;
  border:1px solid var(--line-strong);
  background:
    linear-gradient(120deg,rgba(4,6,12,.94),rgba(10,15,28,.82)),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  box-shadow:var(--sh-2);
  padding:56px 52px;
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:40px;
  align-items:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(115deg,rgba(18,227,196,.05) 0 2px,transparent 2px 16px);
  pointer-events:none;
}
.cta-band > *{position:relative;}
.cta-band h2{
  font-size:clamp(24px,3.2vw,32px);
  font-weight:800;
  line-height:1.3;
}
.cta-band p{
  margin-top:14px;
  color:var(--t-2);
  font-size:15.5px;
  max-width:560px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.cta-side{
  padding:26px;
  border-radius:var(--r-card);
  background:rgba(10,15,28,.7);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.cta-side h3{font-size:16px;margin-bottom:16px;}
.cta-side li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:11px 0;
  border-bottom:1px dashed var(--line);
  font-size:14px;
  color:var(--t-2);
}
.cta-side li:last-child{border-bottom:0;}
.cta-side li b{color:var(--c-primary);font-weight:600;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid transparent;
  background-image:linear-gradient(var(--bg-deep),var(--bg-deep)),linear-gradient(90deg,var(--c-primary),rgba(18,227,196,0));
  background-origin:border-box;
  background-clip:padding-box,border-box;
  padding:68px 0 0;
  margin-top:0;
  position:relative;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.foot-brand .logo-text{font-size:19px;}
.foot-brand p{
  margin-top:16px;
  color:var(--t-2);
  font-size:14px;
  max-width:320px;
  line-height:1.85;
}
.foot-social{display:flex;gap:10px;margin-top:20px;}
.foot-social .icon-btn{width:38px;height:38px;border-radius:10px;}
.foot-col h4{
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
  color:var(--t-1);
}
.foot-col ul{display:grid;gap:12px;}
.foot-col a{font-size:14px;color:var(--t-2);}
.foot-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--t-2);
}
.foot-contact svg{flex:0 0 auto;width:17px;height:17px;margin-top:5px;color:var(--c-primary);}
.foot-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding:22px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t-3);
}
.foot-bottom .links{display:flex;gap:20px;flex-wrap:wrap;}
.foot-bottom a{color:var(--t-3);}
.foot-bottom a:hover{color:var(--c-primary);}

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .split{gap:40px;}
  .spec-list li{grid-template-columns:180px 1fr 170px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-media{order:0;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1fr;padding:44px 36px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:900px){
  .site-header{height:64px;}
  .main-nav{
    position:fixed;
    top:0;right:0;
    width:88%;
    max-width:380px;
    height:100vh;
    padding:88px 22px 28px;
    background:rgba(6,9,18,.96);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    box-shadow:-18px 0 40px rgba(0,0,0,.5);
    transform:translateX(104%);
    transition:transform .26s var(--ease);
    overflow-y:auto;
    z-index:70;
  }
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px;}
  .main-nav a{
    display:block;
    padding:14px 16px;
    border-radius:10px;
    font-size:16px;
    border:0;
  }
  .main-nav a.active{
    background:transparent;
    border-left:3px solid var(--c-primary);
    border-radius:0 10px 10px 0;
    padding-left:18px;
  }
  .main-nav a.active::after{display:none;}
  .burger{display:block;z-index:80;position:relative;}
  body.nav-open .main-nav{transform:translateX(0);}
  body.nav-open{overflow:hidden;}
  body.nav-open .burger i:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
  body.nav-open .burger i:nth-child(2){opacity:0;}
  body.nav-open .burger i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}
  .nav-actions .btn-sm{display:none;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  body{font-size:15.5px;}
  .page-hero-inner{padding:38px 24px 34px;}
  .overview{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:14px;}
  .card-grid{grid-template-columns:1fr;}
  .spec-list li{grid-template-columns:1fr;gap:8px;padding:18px 20px;}
  .spec-v{text-align:left;}
  .section{padding:56px 0;}
  .cta-band{padding:34px 24px;border-radius:18px;}
  .faq-item summary{font-size:16px;}
  .faq-answer{padding:0 18px 22px 24px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo-text{font-size:16px;}
  .page-hero h1{font-size:26px;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-deep:#04060C;
  --c-primary:#12E3C4;
  --c-primary-dark:#0AAE97;
  --c-primary-12:rgba(18,227,196,.12);
  --c-primary-35:rgba(18,227,196,.35);
  --c-accent:#FF6A2B;
  --c-accent-dark:#E14E12;
  --c-tertiary:#7FB2FF;
  --t-1:#EAF0FF;
  --t-2:#9AA7C2;
  --t-3:#66738C;
  --panel:rgba(18,26,44,.62);
  --panel-solid:#101728;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --r-card:16px;
  --r-panel:22px;
  --r-img:14px;
  --r-input:10px;
  --r-btn:10px;
  --sh-1:0 2px 8px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(0,0,0,.45);
  --sh-glow:0 8px 28px rgba(18,227,196,.28);
  --sh-accent:0 8px 28px rgba(255,106,43,.38);
  --dur:.24s;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed","Oswald","DIN Alternate",var(--font-cn);
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--c-primary);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-primary-35);color:#02110E;}

/* ===== 容器 / 通用 ===== */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}
section{position:relative;}
.sec{padding:88px 0;}
.sec-alt{background:var(--bg-1);}
.sec-head{margin-bottom:36px;max-width:760px;}
.sec-head h2{
  font-size:clamp(24px,3.4vw,34px);
  line-height:1.28;
  font-weight:700;
  position:relative;
  padding-left:16px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-dark));
}
.sec-head p{margin-top:10px;color:var(--t-2);font-size:14px;padding-left:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--c-primary);border:1px solid var(--c-primary-35);
  background:var(--c-primary-12);border-radius:999px;padding:5px 12px;
}

/* ===== 按钮体系 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
             background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:9px;}
.btn-primary{
  background:linear-gradient(135deg,#FF7A3D,#FF4A16);
  color:#fff;box-shadow:0 6px 18px rgba(255,106,43,.24);
}
.btn-primary:hover{
  color:#fff;transform:translateY(-2px);filter:brightness(1.06);
  box-shadow:var(--sh-accent);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--panel);border:1px solid var(--line);color:var(--t-1);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.btn-ghost:hover{border-color:var(--c-primary-35);background:rgba(18,26,44,.86);color:var(--t-1);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-primary);
  padding-bottom:2px;position:relative;background:none;border:0;
}
.btn-text::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-primary);transition:width var(--dur) var(--ease);
}
.btn-text:hover::after{width:100%;}
.btn[disabled],.btn.is-loading{opacity:.5;pointer-events:none;box-shadow:none;}
.spin{
  width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.35);border-top-color:#fff;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ===== 标签 / 徽章 ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:6px 10px;border-radius:999px;
  border:1px solid var(--c-primary-35);background:var(--c-primary-12);color:var(--c-primary);
}
.tag-blue{border-color:rgba(127,178,255,.35);background:rgba(127,178,255,.1);color:var(--c-tertiary);}
.tag-hot{background:linear-gradient(135deg,#FF7A3D,#FF4A16);color:#fff;border:0;font-weight:600;}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,14,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  transition:height var(--dur) var(--ease),background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.scrolled{background:rgba(5,7,14,.9);box-shadow:var(--sh-2);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;}
.site-header.scrolled .nav-wrap{height:60px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;position:relative;flex-shrink:0;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-dark));
  box-shadow:var(--sh-glow);
}
.logo-mark span{
  position:absolute;inset:8px 7px;border-left:3px solid #04120F;border-right:3px solid #04120F;
  border-radius:2px;
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--t-1);white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--c-primary);}
.main-nav{margin-left:auto;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;display:block;padding:9px 14px;border-radius:999px;
  font-size:14px;color:var(--t-2);transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.main-nav a:hover{color:var(--t-1);background:rgba(255,255,255,.05);}
.main-nav a.active{color:var(--c-primary);background:var(--c-primary-12);}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--panel);color:var(--t-2);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-35);}
.burger{display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);background:var(--panel);position:relative;}
.burger i{
  position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--t-1);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.burger i:nth-child(1){top:14px;}
.burger i:nth-child(2){top:20px;}
.burger i:nth-child(3){top:26px;}
.burger.open i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger.open i:nth-child(2){opacity:0;}
.burger.open i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ===== 面包屑 + 窄版 Hero ===== */
.page-hero{
  padding:26px 0 46px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(96deg,rgba(5,7,14,.97) 0%,rgba(5,7,14,.86) 46%,rgba(5,7,14,.6) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(118deg,rgba(18,227,196,.06) 0 2px,transparent 2px 22px);
  opacity:.6;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t-3);margin-bottom:26px;flex-wrap:wrap;}
.breadcrumb a{color:var(--t-2);}
.breadcrumb span[aria-current]{color:var(--c-primary);}
.page-hero h1{
  font-size:clamp(28px,5vw,48px);line-height:1.22;font-weight:700;margin-top:16px;max-width:20em;
}
.page-hero .hero-sub{margin-top:14px;color:var(--t-2);font-size:15px;max-width:640px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-meta span{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--t-2);
  border:1px solid var(--line);background:rgba(10,15,28,.6);border-radius:999px;padding:6px 12px;
}
.hero-meta b{font-family:var(--font-num);color:var(--c-primary);font-weight:600;font-variant-numeric:tabular-nums;}

/* ===== 概述 ===== */
.overview{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:start;}
.overview p{color:var(--t-2);font-size:15.5px;margin-bottom:18px;}
.overview p strong{color:var(--t-1);font-weight:600;}
.stat-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:26px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
}
.stat-panel::before{
  content:"";position:absolute;top:0;left:22px;right:22px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
}
.stat-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px dashed var(--line);}
.stat-row:last-child{border-bottom:0;padding-bottom:0;}
.stat-row span{font-size:14px;color:var(--t-2);}
.stat-row b{font-family:var(--font-num);font-size:26px;font-weight:600;color:var(--c-primary);font-variant-numeric:tabular-nums;}
.stat-row b.accent{color:var(--c-accent);}

/* ===== 搜索位 ===== */
.search-box{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:28px;box-shadow:var(--sh-2);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.search-form{display:flex;gap:12px;align-items:stretch;flex-wrap:wrap;}
.field{flex:1 1 320px;display:flex;flex-direction:column;gap:8px;}
.field label{font-size:12px;color:var(--t-3);letter-spacing:.02em;}
.field input{
  height:48px;border-radius:var(--r-input);padding:0 16px;font-size:15px;
  background:rgba(5,7,14,.72);border:1px solid var(--line);color:var(--t-1);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field input::placeholder{color:var(--t-3);}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,227,196,.16);}
.search-form .btn{align-self:flex-end;flex:0 0 auto;}
.form-hint{font-size:13px;margin-top:12px;color:var(--t-3);}
.form-hint.ok{color:var(--c-primary);}
.quick-words{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.quick-words button{
  font-size:13px;color:var(--t-2);border:1px solid var(--line);border-radius:999px;padding:6px 13px;
  background:rgba(5,7,14,.5);transition:all var(--dur) var(--ease);
}
.quick-words button:hover{color:var(--c-primary);border-color:var(--c-primary-35);background:var(--c-primary-12);}

/* ===== FAQ 分组 ===== */
.faq-groups{display:grid;gap:26px;}
.faq-group{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:26px 26px 8px;box-shadow:var(--sh-1);
}
.faq-group-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.faq-group-head .idx{
  font-family:var(--font-num);font-size:14px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);border:1px solid var(--c-primary-35);border-radius:9px;
  padding:4px 9px;background:var(--c-primary-12);
}
.faq-group-head h3{font-size:20px;font-weight:700;}
.faq-group-head p{font-size:13px;color:var(--t-3);margin-left:auto;}
.faq-item{border-top:1px solid var(--line);transition:background-color var(--dur) var(--ease);}
.faq-item:first-of-type{border-top:0;}
.faq-item.open{background:rgba(18,227,196,.06);box-shadow:inset 3px 0 0 var(--c-primary);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:18px 14px;font-size:17px;font-weight:500;color:var(--t-1);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--c-primary);}
.faq-q .dot{width:8px;height:8px;border-radius:2px;background:var(--c-primary);flex-shrink:0;}
.faq-q .plus{
  margin-left:auto;flex-shrink:0;width:20px;height:20px;position:relative;
  transition:transform var(--dur) var(--ease);color:var(--t-2);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-q .plus::before{left:0;right:0;top:9px;height:2px;}
.faq-q .plus::after{top:0;bottom:0;left:9px;width:2px;transition:opacity var(--dur) var(--ease);}
.faq-item.open .faq-q .plus{transform:rotate(180deg);color:var(--c-primary);}
.faq-item.open .faq-q .plus::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease);}
.faq-a-inner{padding:0 34px 22px 36px;color:var(--t-2);font-size:15px;}
.faq-a-inner ol{counter-reset:step;margin-top:8px;}
.faq-a-inner ol li{
  position:relative;padding-left:26px;margin-top:6px;color:var(--t-2);
}
.faq-a-inner ol li::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:0;top:4px;font-family:var(--font-num);font-size:12px;
  color:var(--c-primary);border:1px solid var(--c-primary-35);border-radius:5px;
  width:17px;height:17px;line-height:15px;text-align:center;
}
.faq-a-inner .note{
  margin-top:12px;border-left:3px solid var(--c-primary);background:rgba(18,227,196,.06);
  padding:10px 14px;border-radius:0 8px 8px 0;font-size:14px;color:var(--t-2);
}

/* ===== 处理流程 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.step-card{
  position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:var(--c-primary-35);}
.step-card .no{
  font-family:var(--font-num);font-size:34px;font-weight:600;color:rgba(18,227,196,.35);line-height:1;
}
.step-card h3{font-size:18px;margin:12px 0 8px;}
.step-card p{font-size:14.5px;color:var(--t-2);}

/* ===== 相关阅读 ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);position:relative;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:16px;right:16px;height:1px;z-index:3;
  background:linear-gradient(90deg,transparent,var(--c-primary),transparent);
  opacity:0;transition:opacity var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--c-primary-35);box-shadow:var(--sh-2);}
.card:hover::before{opacity:1;}
.card-media{aspect-ratio:16/10;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0;}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-tags{display:flex;gap:8px;flex-wrap:wrap;}
.card-body h3{font-size:17px;line-height:1.45;}
.card-body p{font-size:14px;color:var(--t-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--t-3);padding-top:12px;border-top:1px solid var(--line);
}

/* ===== CTA 大板 ===== */
.cta-band{padding:0 0 88px;}
.cta-panel{
  position:relative;overflow:hidden;text-align:center;
  background:linear-gradient(140deg,rgba(18,26,44,.9),rgba(4,6,12,.94));
  border:1px solid var(--line-strong);border-radius:var(--r-panel);
  padding:64px 32px;box-shadow:var(--sh-2);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background:radial-gradient(600px 260px at 50% 0%,rgba(18,227,196,.18),transparent 70%),
             repeating-linear-gradient(118deg,rgba(255,255,255,.04) 0 2px,transparent 2px 26px);
}
.cta-panel > *{position:relative;z-index:2;}
.cta-panel h2{font-size:clamp(24px,3.4vw,34px);line-height:1.3;}
.cta-panel p{margin:16px auto 28px;max-width:620px;color:var(--t-2);font-size:15px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.cta-note{margin-top:18px;font-size:12px;color:var(--t-3);}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  position:relative;padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-primary),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.foot-brand .logo-text{font-size:18px;}
.foot-brand p{margin-top:14px;font-size:14px;color:var(--t-2);max-width:34ch;}
.foot-social{display:flex;gap:10px;margin-top:18px;}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--t-1);}
.foot-col ul{display:grid;gap:11px;}
.foot-col a{font-size:14px;color:var(--t-2);}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--t-2);}
.foot-contact svg{width:18px;height:18px;color:var(--c-primary);flex-shrink:0;margin-top:3px;}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--t-3);
}
.foot-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.foot-bottom .links a{color:var(--t-3);}
.foot-bottom .links a:hover{color:var(--c-primary);}

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
  .foot-col:last-child{grid-column:1 / -1;}
}
@media (max-width:1024px){
  .overview{grid-template-columns:1fr;gap:28px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;}
}
@media (max-width:900px){
  .container{padding:0 24px;}
  .sec{padding:72px 0;}
  .burger{display:block;}
  .main-nav{
    position:fixed;top:0;right:-100%;width:88%;max-width:360px;height:100vh;z-index:90;
    margin:0;padding:88px 24px 32px;overflow-y:auto;
    background:rgba(6,9,18,.96);border-left:1px solid var(--line-strong);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    transition:right .26s var(--ease);box-shadow:var(--sh-2);
  }
  .main-nav.open{right:0;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px;}
  .main-nav a{padding:0 14px;height:52px;display:flex;align-items:center;border-radius:10px;font-size:15.5px;}
  .main-nav a.active{box-shadow:inset 3px 0 0 var(--c-primary);border-radius:0 10px 10px 0;}
  .main-nav a.active::after{display:none;}
  .nav-actions .btn-sm{display:none;}
  .page-hero{padding:20px 0 38px;}
  .faq-a-inner{padding:0 18px 20px 30px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .sec{padding:64px 0;}
  .card-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .foot-col:last-child{grid-column:1 / -1;}
  .faq-group{padding:20px 16px 6px;}
  .faq-group-head{flex-wrap:wrap;}
  .faq-group-head p{margin-left:0;width:100%;}
  .faq-q{font-size:16px;padding:16px 8px;}
  .cta-panel{padding:48px 22px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo-text{font-size:15.5px;}
  .icon-btn{width:37px;height:37px;}
  .foot-grid{grid-template-columns:1fr;}
  .stat-row b{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .search-form .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-deep:#04060C;
  --c-primary:#12E3C4;
  --c-primary-deep:#0AAE97;
  --c-accent:#FF6A2B;
  --c-accent-deep:#E14E12;
  --c-tertiary:#7FB2FF;
  --t-1:#EAF0FF;
  --t-2:#9AA7C2;
  --t-3:#66738C;
  --panel:rgba(18,26,44,.62);
  --panel-solid:#101728;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --c-primary-a12:rgba(18,227,196,.12);
  --c-primary-a35:rgba(18,227,196,.35);
  --sh-1:0 2px 8px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(0,0,0,.45);
  --sh-glow:0 8px 28px rgba(18,227,196,.28);
  --r-card:16px;
  --r-panel:22px;
  --r-img:14px;
  --r-input:10px;
  --r-btn:10px;
  --ff:"PingFang SC","HarmonyOS Sans SC","MiSans","Noto Sans SC","Microsoft YaHei",sans-serif;
  --ff-num:"Barlow Condensed","Oswald","DIN Alternate","PingFang SC",sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.85;
  color:var(--t-1);
  background:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 8% -6%,rgba(18,227,196,.10),transparent 62%),
    radial-gradient(760px 460px at 92% 4%,rgba(127,178,255,.08),transparent 60%);
  background-attachment:fixed;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:0;}
h1{font-size:clamp(28px,5vw,48px);line-height:1.22;}
h2{font-size:clamp(24px,3.4vw,34px);line-height:1.28;}
h3{font-size:20px;line-height:1.4;}
h4{font-size:17px;line-height:1.45;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;border-radius:var(--r-img);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(18,227,196,.3);color:#fff;}
.num{font-family:var(--ff-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ 容器 ============ */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(5,7,14,.72);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled{background:rgba(5,7,14,.9);box-shadow:var(--sh-2);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s var(--ease);}
.site-header.scrolled .nav-wrap{height:60px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-deep));
  display:grid;place-items:center;box-shadow:var(--sh-glow);
}
.logo-mark span{width:12px;height:12px;border-radius:3px;background:var(--bg-0);display:block;}
.logo-text{font-size:19px;font-weight:800;letter-spacing:.02em;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--c-primary);}
.main-nav{flex:1;display:flex;justify-content:center;}
.main-nav ul{display:flex;gap:6px;align-items:center;}
.main-nav a{
  position:relative;display:block;padding:9px 15px;border-radius:999px;
  font-size:15px;color:var(--t-2);white-space:nowrap;
}
.main-nav a:hover{color:var(--t-1);background:rgba(255,255,255,.05);}
.main-nav a.active{color:var(--c-primary);background:var(--c-primary-a12);}
.main-nav a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:1px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--t-2);
  transition:all .22s var(--ease);
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-a35);background:var(--c-primary-a12);}
.burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.03);position:relative;}
.burger i{display:block;width:18px;height:2px;background:var(--t-1);margin:4px auto;border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.burger.open i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger.open i:nth-child(2){opacity:0;}
.burger.open i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;white-space:nowrap;border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease);
}
.btn-sm{height:42px;padding:0 20px;font-size:15px;}
.btn-primary{
  background:linear-gradient(135deg,#FF7A3D,#FF4A16);
  color:#fff;box-shadow:0 6px 20px rgba(255,106,43,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(255,106,43,.4);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 14px rgba(255,106,43,.3);}
.btn-ghost{
  background:var(--panel);border-color:var(--line-strong);color:var(--t-1);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.btn-ghost:hover{border-color:var(--c-primary-a35);background:rgba(18,227,196,.08);transform:translateY(-2px);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);
  font-size:15px;font-weight:600;position:relative;
}
.btn-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;
  background:var(--c-primary);transition:width .24s var(--ease);
}
.btn-link:hover::after{width:100%;}

/* ============ 面包屑 ============ */
.crumb{padding:26px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t-3);}
.crumb li::after{content:"/";margin-left:8px;color:var(--t-3);opacity:.6;}
.crumb li:last-child::after{content:"";}
.crumb a{color:var(--t-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb strong{color:var(--t-1);font-weight:600;}

/* ============ 频道 Hero ============ */
.channel-hero{
  position:relative;margin-top:22px;border-radius:var(--r-panel);
  overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(10,15,28,.94),rgba(5,7,14,.86)),
             url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  box-shadow:var(--sh-1);
}
.channel-hero::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(18,227,196,.06) 0 2px,transparent 2px 22px);
  pointer-events:none;
}
.channel-hero .inner{position:relative;padding:52px 44px;min-height:248px;display:flex;flex-direction:column;justify-content:center;gap:14px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;color:var(--c-primary);
  border:1px solid var(--c-primary-a35);background:var(--c-primary-a12);
}
.tag.blue{color:var(--c-tertiary);border-color:rgba(127,178,255,.32);background:rgba(127,178,255,.1);}
.tag.warm{color:#FFB489;border-color:rgba(255,106,43,.34);background:rgba(255,106,43,.12);}
.channel-hero h1{max-width:22ch;}
.channel-hero h1 em{font-style:normal;color:var(--c-primary);}
.channel-hero .sub{color:var(--t-2);font-size:16px;max-width:60ch;}

/* ============ 板块通用 ============ */
.section{padding:88px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap;}
.section-head .titles{max-width:64ch;}
.section-head h2{position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
  border-radius:3px;background:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep));
}
.section-head .lead{margin-top:10px;color:var(--t-2);font-size:15px;}
.eyebrow{
  font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--t-3);
  font-family:var(--ff-num);margin-bottom:8px;display:block;
}

/* ============ 概述 ============ */
.overview{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start;margin-top:36px;}
.overview .prose p{color:var(--t-2);font-size:16px;}
.overview .prose p strong{color:var(--t-1);font-weight:600;}
.overview figure{margin:0;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);position:relative;}
.overview figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.overview figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;font-size:13px;color:var(--t-2);
  background:linear-gradient(180deg,rgba(4,6,12,0),rgba(4,6,12,.9));
}

/* ============ 数据面板 ============ */
.data-panel{
  margin-top:8px;border-radius:var(--r-panel);border:1px solid var(--line);
  background:var(--panel);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:var(--sh-1);overflow:hidden;
}
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-bottom:1px solid var(--line);
}
.stat-strip .stat{padding:26px 24px;border-right:1px solid var(--line);}
.stat-strip .stat:last-child{border-right:0;}
.stat .k{font-size:13px;color:var(--t-3);display:block;margin-bottom:6px;}
.stat .v{font-family:var(--ff-num);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;color:var(--c-primary);line-height:1.1;}
.stat .v small{font-size:15px;color:var(--t-2);font-weight:500;margin-left:4px;}

.compare{padding:30px 24px 34px;}
.compare h3{margin-bottom:6px;}
.compare .note{color:var(--t-3);font-size:13px;margin-bottom:22px;}
.bar-row{display:grid;grid-template-columns:78px 1fr 78px;align-items:center;gap:14px;margin-bottom:16px;}
.bar-row .side{font-family:var(--ff-num);font-variant-numeric:tabular-nums;font-size:16px;color:var(--t-1);}
.bar-row .side.right{text-align:right;}
.bar-track{display:grid;grid-template-columns:1fr 1fr;gap:4px;height:10px;}
.bar-track span{display:block;height:10px;border-radius:6px;background:rgba(255,255,255,.06);position:relative;overflow:hidden;}
.bar-track span i{position:absolute;top:0;bottom:0;display:block;border-radius:6px;}
.bar-track span.left i{right:0;background:linear-gradient(90deg,var(--c-primary-deep),var(--c-primary));}
.bar-track span.right i{left:0;background:linear-gradient(90deg,#8A94AB,#CBD4E8);}
.bar-meta{grid-column:1/-1;text-align:center;font-size:13px;color:var(--t-3);margin-top:-10px;}

/* ============ 赛程列表 ============ */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.chip{
  height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--t-2);font-size:14px;
  transition:all .22s var(--ease);
}
.chip:hover{border-color:var(--c-primary-a35);color:var(--t-1);}
.chip.is-on{color:#04231F;background:var(--c-primary);border-color:var(--c-primary);font-weight:600;}

.match-list{border-radius:var(--r-panel);border:1px solid var(--line);background:var(--panel);overflow:hidden;}
.match-row{
  display:grid;grid-template-columns:150px 1fr auto;gap:22px;align-items:center;
  padding:22px 26px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.match-row:last-child{border-bottom:0;}
.match-row:hover{background:rgba(18,227,196,.05);box-shadow:inset 3px 0 0 var(--c-primary);}
.match-time{display:flex;flex-direction:column;gap:2px;}
.match-time .d{font-family:var(--ff-num);font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;color:var(--t-1);line-height:1.15;}
.match-time .m{font-size:13px;color:var(--t-3);}
.match-body h3{font-size:18px;margin-bottom:6px;}
.match-body h3 a:hover{color:var(--c-primary);}
.match-body p{font-size:14px;color:var(--t-2);margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.match-body .tags{display:flex;flex-wrap:wrap;gap:8px;}
.match-state{
  display:flex;flex-direction:column;align-items:flex-end;gap:8px;min-width:104px;
}
.state-badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;
}
.state-live{color:#FFD7C4;background:rgba(255,106,43,.16);border:1px solid rgba(255,106,43,.4);}
.state-live::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);
  margin-right:6px;box-shadow:0 0 0 4px rgba(255,106,43,.16);
}
.state-soon{color:var(--c-primary);background:var(--c-primary-a12);border:1px solid var(--c-primary-a35);}
.state-done{color:var(--t-2);background:rgba(255,255,255,.05);border:1px solid var(--line);}
.match-state .score{font-family:var(--ff-num);font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;color:var(--t-1);}

/* ============ 相关阅读 ============ */
.read-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--panel);box-shadow:var(--sh-1);overflow:hidden;position:relative;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-primary),transparent);
  opacity:0;transition:opacity .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,227,196,.45);box-shadow:var(--sh-2);}
.card:hover::before{opacity:1;}
.card .thumb{position:relative;}
.card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.card .thumb .tag{position:absolute;left:12px;top:12px;background:rgba(5,7,14,.72);}
.card .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card .body h3{font-size:17px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .body p{font-size:14px;color:var(--t-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--t-3);font-family:var(--ff-num);font-variant-numeric:tabular-nums;
  padding-top:10px;border-top:1px solid var(--line);
}

/* ============ FAQ ============ */
.faq{margin-top:10px;border-radius:var(--r-panel);border:1px solid var(--line);background:var(--panel);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:22px 24px;font-size:17px;font-weight:600;color:var(--t-1);
  transition:background .22s var(--ease);
}
.faq-q:hover{background:rgba(255,255,255,.03);}
.faq-q .idx{font-family:var(--ff-num);font-size:14px;color:var(--c-primary);min-width:26px;}
.faq-q .ico{
  margin-left:auto;flex-shrink:0;width:22px;height:22px;position:relative;
  transition:transform .24s var(--ease);
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);
  border-radius:2px;transform:translate(-50%,-50%);
}
.faq-q .ico::before{width:12px;height:2px;}
.faq-q .ico::after{width:2px;height:12px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.faq-item.open .faq-q{background:rgba(18,227,196,.06);box-shadow:inset 3px 0 0 var(--c-primary);}
.faq-item.open .ico{transform:rotate(180deg);}
.faq-item.open .ico::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
.faq-a .inner{padding:0 24px 24px 64px;color:var(--t-2);font-size:15px;}

/* ============ CTA 大板 ============ */
.cta-band{
  margin-top:96px;border-radius:var(--r-panel);border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(4,6,12,.96),rgba(10,18,34,.9)),
             url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  position:relative;overflow:hidden;box-shadow:var(--sh-2);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(18,227,196,.05) 0 2px,transparent 2px 24px);
}
.cta-band .inner{position:relative;padding:56px 44px;display:grid;grid-template-columns:1.2fr auto;gap:32px;align-items:center;}
.cta-band h2{margin-bottom:10px;}
.cta-band p{color:var(--t-2);font-size:15px;max-width:62ch;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:104px;background:var(--bg-deep);position:relative;
  border-top:1px solid rgba(18,227,196,.3);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-primary),transparent);
}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 44px;
}
.foot-brand .logo-text{font-size:20px;display:inline-block;margin-bottom:14px;}
.foot-brand p{color:var(--t-2);font-size:14px;max-width:34ch;margin-bottom:18px;}
.foot-social{display:flex;gap:10px;}
.foot-social .icon-btn{cursor:default;}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--t-1);}
.foot-col ul li{margin-bottom:11px;}
.foot-col a{color:var(--t-2);font-size:14px;}
.foot-col a:hover{color:var(--c-primary);}
.foot-contact li{display:flex;align-items:flex-start;gap:10px;color:var(--t-2);font-size:14px;line-height:1.7;}
.foot-contact svg{width:18px;height:18px;flex-shrink:0;margin-top:4px;color:var(--c-primary);}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 0 34px;border-top:1px solid var(--line);color:var(--t-3);font-size:13px;
}
.foot-bottom .links{display:flex;gap:20px;flex-wrap:wrap;}
.foot-bottom .links a{color:var(--t-3);}
.foot-bottom .links a:hover{color:var(--c-primary);}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88%;max-width:380px;z-index:120;
  background:rgba(8,12,22,.94);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-left:1px solid var(--line);transform:translateX(100%);
  transition:transform .26s var(--ease);display:flex;flex-direction:column;padding:22px 0;
}
.drawer.open{transform:translateX(0);}
.drawer .d-head{display:flex;align-items:center;justify-content:space-between;padding:0 22px 18px;border-bottom:1px solid var(--line);}
.drawer .d-close{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--t-2);}
.drawer nav{padding:14px 0;flex:1;overflow-y:auto;}
.drawer nav a{
  display:flex;align-items:center;height:52px;padding:0 22px;color:var(--t-2);font-size:16px;
  border-left:3px solid transparent;
}
.drawer nav a:hover{background:rgba(255,255,255,.04);color:var(--t-1);}
.drawer nav a.active{color:var(--c-primary);border-left-color:var(--c-primary);background:var(--c-primary-a12);}
.drawer .d-foot{padding:18px 22px 6px;border-top:1px solid var(--line);}
.drawer .d-foot .btn{width:100%;}
.scrim{
  position:fixed;inset:0;background:rgba(2,4,8,.6);z-index:110;opacity:0;pointer-events:none;
  transition:opacity .26s var(--ease);
}
.scrim.open{opacity:1;pointer-events:auto;}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .container{padding:0 24px;}
  .overview{grid-template-columns:1fr 1fr;}
  .match-row{grid-template-columns:132px 1fr auto;gap:18px;}
}
@media (max-width:1024px){
  .main-nav{display:none;}
  .burger{display:block;}
  .section{padding:72px 0 0;}
  .read-grid{grid-template-columns:repeat(2,1fr);}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-strip .stat:nth-child(2){border-right:0;}
  .stat-strip .stat:nth-child(1),.stat-strip .stat:nth-child(2){border-bottom:1px solid var(--line);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .overview{grid-template-columns:1fr;}
  .cta-band .inner{grid-template-columns:1fr;padding:40px 26px;}
  .channel-hero .inner{padding:38px 26px;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .section{padding:56px 0 0;}
  .nav-wrap{height:64px;gap:12px;}
  .nav-actions .btn-sm{display:none;}
  .logo-text{font-size:17px;}
  .match-row{grid-template-columns:1fr;gap:14px;padding:20px;}
  .match-state{flex-direction:row;align-items:center;justify-content:space-between;min-width:0;width:100%;}
  .read-grid{grid-template-columns:1fr;}
  .bar-row{grid-template-columns:56px 1fr 56px;gap:10px;}
  .faq-a .inner{padding-left:24px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 30px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .stat-strip{grid-template-columns:1fr;}
  .stat-strip .stat{border-right:0;border-bottom:1px solid var(--line);}
  .stat-strip .stat:last-child{border-bottom:0;}
  .channel-hero .inner{padding:32px 20px;min-height:0;}
  .cta-actions .btn{width:100%;}
  .filters{gap:8px;}
  .chip{height:34px;padding:0 13px;font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category4 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-deep:#04060C;
  --c-primary:#12E3C4;
  --c-primary-deep:#0AAE97;
  --c-accent:#FF6A2B;
  --c-accent-deep:#E14E12;
  --c-tertiary:#7FB2FF;
  --t-1:#EAF0FF;
  --t-2:#9AA7C2;
  --t-3:#66738C;
  --panel:rgba(18,26,44,.62);
  --panel-solid:#101728;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --primary-soft:rgba(18,227,196,.12);
  --primary-line:rgba(18,227,196,.35);
  --r-card:16px;
  --r-panel:22px;
  --r-img:14px;
  --r-btn:10px;
  --sh-1:0 2px 8px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(0,0,0,.45);
  --sh-glow:0 8px 28px rgba(18,227,196,.28);
  --sh-accent:0 10px 28px rgba(255,106,43,.38);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed","DIN Alternate","Oswald","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease)}
a:hover{color:var(--c-primary)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em}

/* 容器与栅格 */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
.section{padding:96px 0;position:relative}
.section.alt{background:var(--bg-1)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head .titles{max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--c-primary);
  border:1px solid var(--primary-line);
  background:var(--primary-soft);
  border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
h1{font-size:clamp(28px,5vw,48px);line-height:1.22;font-weight:700;letter-spacing:0}
h2{font-size:clamp(24px,3.4vw,34px);line-height:1.28;font-weight:700}
h3{font-size:21px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
.lead{color:var(--t-2);font-size:16px;line-height:1.85}
.section-sub{color:var(--t-2);font-size:14px;margin-top:10px}
.bar-title{position:relative;padding-left:14px}
.bar-title::before{
  content:"";position:absolute;left:0;top:8%;height:84%;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep));
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#FF7A3D,#FF4A16);
  color:#fff;box-shadow:0 6px 18px rgba(255,106,43,.26);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-accent);filter:brightness(1.06);color:#fff}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:var(--panel);border:1px solid var(--line-strong);color:var(--t-1);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
}
.btn-ghost:hover{border-color:var(--primary-line);background:rgba(18,26,44,.85);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-tertiary);position:relative}
.btn-text::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--c-primary);transition:width .24s var(--ease)}
.btn-text:hover::after{width:100%}
.btn[disabled],.btn.is-loading{opacity:.5;box-shadow:none;pointer-events:none}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:5px 10px;border-radius:999px;
  border:1px solid var(--primary-line);color:var(--c-primary);background:var(--primary-soft);
}
.badge.hot{background:linear-gradient(135deg,#FF7A3D,#FF4A16);border-color:transparent;color:#fff;font-weight:600}
.tag{font-size:12px;color:var(--c-tertiary);border:1px solid rgba(127,178,255,.32);border-radius:999px;padding:4px 10px;line-height:1}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,14,.72);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:height .24s var(--ease),background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header .nav-wrap{display:flex;align-items:center;gap:24px;height:72px;transition:height .24s var(--ease)}
.site-header.scrolled{background:rgba(5,7,14,.86);box-shadow:var(--sh-2)}
.site-header.scrolled .nav-wrap{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));
  display:grid;place-items:center;box-shadow:0 6px 18px rgba(18,227,196,.28);
}
.logo-mark span{display:block;width:12px;height:12px;border:2px solid #04231E;border-radius:3px;transform:rotate(45deg)}
.logo-text{font-size:18px;font-weight:700;letter-spacing:0;color:var(--t-1)}
.logo-text em{font-style:normal;color:var(--c-primary)}
.main-nav{margin-left:auto}
.main-nav ul{display:flex;align-items:center;gap:6px}
.main-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:999px;font-size:14px;color:var(--t-2);position:relative;
}
.main-nav a:hover{color:var(--t-1);background:rgba(255,255,255,.04)}
.main-nav a.active{color:var(--c-primary);background:var(--primary-soft)}
.main-nav a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--panel);color:var(--t-2);
  transition:border-color .22s var(--ease),color .22s var(--ease),background-color .22s var(--ease);
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{border-color:var(--primary-line);color:var(--c-primary)}
.burger{display:none;width:44px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--panel);padding:0 11px;flex-direction:column;justify-content:center;gap:5px}
.burger i{display:block;height:2px;border-radius:2px;background:var(--t-1);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.nav-drawer{
  position:fixed;inset:0 0 0 auto;width:88%;max-width:380px;z-index:80;
  background:rgba(9,13,24,.96);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .26s var(--ease);
  display:flex;flex-direction:column;padding:22px 20px 24px;
}
.nav-drawer.open{transform:translateX(0)}
.nav-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.nav-drawer ul{display:flex;flex-direction:column;gap:4px}
.nav-drawer a{
  display:flex;align-items:center;min-height:52px;padding:0 14px;border-radius:12px;
  font-size:16px;color:var(--t-2);border-left:3px solid transparent;
}
.nav-drawer a:hover{background:rgba(255,255,255,.05);color:var(--t-1)}
.nav-drawer a.active{color:var(--c-primary);background:var(--primary-soft);border-left-color:var(--c-primary)}
.drawer-cta{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.drawer-cta .btn{width:100%}
.mask{position:fixed;inset:0;background:rgba(3,5,10,.6);z-index:70;opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease)}
.mask.open{opacity:1;visibility:visible}

/* 面包屑 */
.breadcrumb{padding:26px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-3)}
.breadcrumb li::after{content:"/";margin-left:8px;color:var(--t-3)}
.breadcrumb li:last-child::after{display:none}
.breadcrumb a{color:var(--t-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .current{color:var(--c-primary)}

/* 频道 Hero */
.cat-hero{
  position:relative;overflow:hidden;margin-top:22px;
  border-radius:var(--r-panel);border:1px solid var(--line);
  background-image:
    linear-gradient(100deg,rgba(5,7,14,.94) 0%,rgba(5,7,14,.78) 48%,rgba(5,7,14,.5) 100%),
    url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  box-shadow:var(--sh-2);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background:repeating-linear-gradient(115deg,#12E3C4 0 2px,transparent 2px 26px);
}
.cat-hero-inner{position:relative;z-index:2;padding:44px 48px;max-width:820px}
.cat-hero h1{margin:14px 0 12px}
.cat-hero .lead{font-size:16.5px;color:var(--t-2);max-width:660px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.meta-pill{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:var(--panel);border:1px solid var(--line);font-size:13px;color:var(--t-2);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.meta-pill strong{color:var(--t-1);font-weight:600}

/* 概述 */
.overview{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.overview-text p+p{margin-top:16px}
.overview-figure{
  border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-2);position:relative;
}
.overview-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.overview-figure figcaption{
  padding:12px 18px;font-size:13px;color:var(--t-3);background:rgba(10,15,28,.9);
  border-top:1px solid var(--line);
}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.stat{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 18px;
}
.stat b{display:block;font-family:var(--font-num);font-size:26px;color:var(--c-primary);line-height:1.2}
.stat span{font-size:13px;color:var(--t-2)}

/* 时间轴 + 侧栏 */
.timeline-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:40px;align-items:start}
.timeline{position:relative;padding-left:30px}
.timeline::before{
  content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),rgba(18,227,196,.06));
}
.tl-item{position:relative;margin-bottom:22px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:26px;width:18px;height:18px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--c-primary);box-shadow:0 0 0 4px rgba(18,227,196,.12);
}
.tl-item .tl-date{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--t-3);letter-spacing:.02em;
}
.tl-card{
  margin-top:8px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(18,227,196,.45);box-shadow:var(--sh-2)}
.tl-card .tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px}
.tl-card h3{font-size:19px}
.tl-card p{color:var(--t-2);font-size:15px}
.tl-card ul{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.tl-card li{position:relative;padding-left:16px;font-size:14.5px;color:var(--t-2)}
.tl-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--c-primary);opacity:.8}

.side-card{
  position:sticky;top:96px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:26px;box-shadow:var(--sh-2);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
}
.side-card h3{font-size:18px;margin-bottom:6px}
.side-card .side-sub{font-size:13px;color:var(--t-3);margin-bottom:18px}
.spec-list{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}
.spec-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;color:var(--t-2);padding-bottom:12px;border-bottom:1px dashed rgba(255,255,255,.08)}
.spec-list li:last-child{border-bottom:0;padding-bottom:0}
.spec-list b{color:var(--t-1);font-weight:600;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.side-note{font-size:13px;color:var(--t-3);margin-top:16px;line-height:1.7}
.side-card .btn{width:100%}
.side-card .btn+.btn{margin-top:12px}

/* 下载通道网格 */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.dl-card:hover{transform:translateY(-4px);border-color:rgba(18,227,196,.45);box-shadow:var(--sh-2)}
.dl-card .ico{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--primary-soft);border:1px solid var(--primary-line);color:var(--c-primary);margin-bottom:16px;
}
.dl-card .ico svg{width:22px;height:22px}
.dl-card h3{font-size:18px;margin-bottom:8px}
.dl-card p{font-size:14.5px;color:var(--t-2);flex:1}
.dl-card .dl-meta{display:flex;gap:14px;margin:16px 0 18px;font-size:13px;color:var(--t-3)}
.dl-card .dl-meta span{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* 检查清单 */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  background:linear-gradient(180deg,rgba(18,26,44,.7),rgba(10,15,28,.7));
  border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;
}
.check-item .idx{
  font-family:var(--font-num);font-size:15px;color:var(--c-primary);
  border:1px solid var(--primary-line);border-radius:8px;padding:2px 9px;flex-shrink:0;
}
.check-item h4{margin-bottom:4px}
.check-item p{font-size:14px;color:var(--t-2)}

/* FAQ */
.faq-list{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:22px 18px;font-size:17px;font-weight:600;color:var(--t-1);
  transition:background-color .24s var(--ease);
}
.faq-q:hover{background:rgba(255,255,255,.03)}
.faq-q .mark{width:8px;height:8px;border-radius:2px;background:var(--c-primary);flex-shrink:0}
.faq-q .sign{margin-left:auto;width:20px;height:20px;position:relative;flex-shrink:0;transition:transform .24s var(--ease)}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--t-2);border-radius:2px}
.faq-q .sign::before{left:0;top:9px;width:20px;height:2px}
.faq-q .sign::after{left:9px;top:0;width:2px;height:20px;transition:opacity .24s var(--ease)}
.faq-item.open .faq-q{background:rgba(18,227,196,.06);box-shadow:inset 3px 0 0 var(--c-primary)}
.faq-item.open .faq-q .sign{transform:rotate(180deg)}
.faq-item.open .faq-q .sign::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a-inner{padding:0 18px 24px 40px;font-size:15.5px;color:var(--t-2)}

/* 相关阅读 */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(18,227,196,.45);box-shadow:var(--sh-2)}
.rel-card .thumb{position:relative;overflow:hidden}
.rel-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rel-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,14,0) 40%,rgba(5,7,14,.7))}
.rel-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card h3{font-size:17px;line-height:1.5}
.rel-card p{font-size:14px;color:var(--t-2);flex:1}
.rel-card .rel-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t-3)}

/* CTA 大板 */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  background:
    radial-gradient(600px 260px at 12% 10%,rgba(18,227,196,.16),transparent 70%),
    radial-gradient(520px 260px at 88% 90%,rgba(255,106,43,.16),transparent 70%),
    var(--bg-deep);
  border:1px solid var(--line);box-shadow:var(--sh-2);
  padding:56px 48px;text-align:center;
}
.cta-band::after{content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;background:repeating-linear-gradient(120deg,#12E3C4 0 2px,transparent 2px 30px)}
.cta-band h2{position:relative;z-index:2;margin-bottom:14px}
.cta-band p{position:relative;z-index:2;color:var(--t-2);max-width:620px;margin:0 auto 28px}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta-hint{position:relative;z-index:2;margin-top:16px;font-size:12.5px;color:var(--t-3)}

/* 页脚 */
.site-footer{
  background:var(--bg-deep);position:relative;padding:72px 0 28px;margin-top:8px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-primary),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.foot-brand .logo-text{font-size:19px;display:block;margin-bottom:14px}
.foot-brand p{font-size:14px;color:var(--t-2);max-width:320px;line-height:1.8}
.foot-social{display:flex;gap:10px;margin-top:18px}
.foot-social .icon-btn{width:38px;height:38px}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--t-1)}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14px;color:var(--t-2)}
.foot-contact li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--t-2)}
.foot-contact svg{width:18px;height:18px;color:var(--c-primary);flex-shrink:0}
.foot-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding-top:24px;font-size:13px;color:var(--t-3)}
.foot-bottom .links{display:flex;gap:18px}
.foot-bottom a{color:var(--t-3)}
.foot-bottom a:hover{color:var(--c-primary)}

/* 响应式 */
@media (max-width:1200px){
  .container{padding:0 26px}
  .timeline-layout{grid-template-columns:minmax(0,1fr) 300px;gap:32px}
}
@media (max-width:1024px){
  .main-nav{display:none}
  .burger{display:flex}
  .section{padding:80px 0}
  .overview{grid-template-columns:1fr;gap:32px}
  .timeline-layout{grid-template-columns:1fr}
  .side-card{position:static}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:900px){
  .cat-hero-inner{padding:34px 30px}
  .site-header .nav-wrap{height:64px}
  .nav-actions .btn-sm{display:none}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px}
  .stat-row{grid-template-columns:1fr 1fr}
  .check-grid{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:40px 24px}
  .faq-q{font-size:16px;padding:18px 12px}
  .faq-a-inner{padding:0 12px 20px 34px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  body{font-size:15.5px;line-height:1.8}
  .cat-hero-inner{padding:26px 20px}
  .hero-meta{gap:8px}
  .meta-pill{font-size:12.5px;padding:7px 12px}
  .stat-row{grid-template-columns:1fr}
  .timeline{padding-left:24px}
  .tl-item::before{left:-24px;width:15px;height:15px}
  h1{font-size:clamp(24px,7vw,32px)}
  h2{font-size:clamp(21px,6vw,26px)}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}