/* roulang page: index */
:root{
  --carbon:#0A0C0B;
  --ink:#101A14;
  --lime:#CBFF3C;
  --flame:#FF6A2B;
  --paper:#F2F5F1;
  --muted:#9BA79F;
  --line:#23302A;
  --divider:#1A231E;
  --field:#141A16;
  --r-card:14px;
  --r-cover:10px;
  --r-btn:8px;
  --sh-card:0 18px 40px rgba(0,0,0,.45);
  --sh-float:0 24px 60px rgba(0,0,0,.55);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--carbon);
  color:var(--paper);
  font-family:'PingFang SC','HarmonyOS Sans','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-cover);}
a{color:inherit;text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:2px;
  border-radius:6px;
}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.02em;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-family:'Barlow Condensed','Oswald','Arial Narrow',sans-serif;font-variant-numeric:tabular-nums;}

.container-x{max-width:1280px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1024px){.container-x{padding-left:40px;padding-right:40px;}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(10,12,11,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:box-shadow var(--ease);}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5);border-bottom:1px solid var(--line);}
.topbar{border-bottom:1px solid var(--divider);}
.topbar-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;white-space:nowrap;}
.brand-dot{width:10px;height:10px;border-radius:999px;background:var(--lime);box-shadow:0 0 0 4px rgba(203,255,60,.14);}
.search-box{flex:1 1 auto;max-width:420px;position:relative;}
.search-box input{
  width:100%;height:38px;border-radius:var(--r-btn);
  background:var(--field);border:1px solid var(--line);color:var(--paper);
  padding:0 14px 0 36px;font-size:14px;transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box input::placeholder{color:var(--muted);}
.search-box input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.18);}
.search-box svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--muted);}
.topbar-actions{display:flex;align-items:center;gap:18px;margin-left:auto;}
.search-toggle{display:none;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line);background:transparent;color:var(--paper);}
.search-toggle svg{width:17px;height:17px;stroke:currentColor;}
@media (max-width:767px){
  .search-box{display:none;}
  .search-toggle{display:inline-flex;}
}

/* ---------- channel nav ---------- */
.channelnav{height:48px;}
.channelnav-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:999px;
  font-size:14px;color:var(--muted);white-space:nowrap;position:relative;
  transition:color var(--ease),background-color var(--ease);
}
.chip:hover{color:var(--paper);background:rgba(255,255,255,.08);}
.chip-active{color:var(--paper);font-weight:700;}
.chip-active::after{content:"";position:absolute;left:14px;right:14px;bottom:-7px;height:3px;border-radius:2px;background:var(--lime);}
.chip-active:hover{background:transparent;}

/* ---------- buttons ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--lime);color:#0A0C0B;font-weight:700;font-size:15px;
  padding:0 22px;height:44px;border-radius:var(--r-btn);border:none;cursor:pointer;
  transition:filter var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 4px rgba(203,255,60,.16);}
.btn-primary:active{transform:translateY(1px);}
.btn-primary.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--paper);font-weight:600;font-size:15px;
  padding:0 22px;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.3);cursor:pointer;
  transition:border-color var(--ease),background-color var(--ease),color var(--ease);
}
.btn-ghost:hover{border-color:var(--lime);background:rgba(203,255,60,.06);color:var(--lime);}
.btn-ghost.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--paper);transition:color var(--ease);}
.text-link span.arrow{transition:transform var(--ease);}
.text-link:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px;}
.text-link:hover span.arrow{transform:translateX(2px);}

/* ---------- chips / badges ---------- */
.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-family:'Barlow Condensed','Oswald',sans-serif;font-weight:600;}
.badge-cat{background:rgba(203,255,60,.12);color:var(--lime);}
.badge-hot{background:rgba(255,106,43,.14);color:var(--flame);}
.tag-outline{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;border:1px solid var(--lime);color:var(--lime);font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-family:'Barlow Condensed','Oswald',sans-serif;font-weight:600;}
.cut-tag{display:inline-block;padding:4px 12px 4px 10px;background:rgba(203,255,60,.12);color:var(--lime);font-size:12px;font-weight:700;clip-path:polygon(0 0,100% 0,92% 100%,0 100%);}

/* ---------- cards ---------- */
.card{background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-float);border-color:rgba(203,255,60,.4);}
.cover{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:0;}
.cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 400ms ease-out;}
.card:hover .cover img{transform:scale(1.04);}
.cover-badge{position:absolute;top:10px;left:10px;}
.cover-meta{position:absolute;right:10px;bottom:10px;font-family:'Barlow Condensed','Oswald',sans-serif;font-size:13px;letter-spacing:.08em;background:rgba(10,12,11,.7);padding:2px 8px;border-radius:6px;color:var(--paper);}
.cover-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,11,.15) 0%,rgba(10,12,11,.78) 100%);}

/* ---------- snap rows ---------- */
.hide-scrollbar{scrollbar-width:none;-ms-overflow-style:none;}
.hide-scrollbar::-webkit-scrollbar{display:none;}
.snap-row{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px;}
.snap-row > *{scroll-snap-align:start;flex:0 0 auto;width:78vw;}
@media (min-width:640px){.snap-row{gap:20px;}.snap-row > *{width:46vw;}}
@media (min-width:1024px){.snap-row > *{width:30vw;}}
@media (min-width:1280px){.snap-row{gap:24px;}.snap-row > *{width:296px;}}

/* ---------- sections ---------- */
.section{padding-top:56px;padding-bottom:56px;}
@media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px;}}
.section-ink{background:var(--ink);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;}
.sec-title{font-size:clamp(26px,3.4vw,40px);}
.sec-sub{color:var(--muted);font-size:15px;max-width:640px;margin-top:8px;}
.divider{height:1px;background:var(--divider);border:none;margin:0;}

/* ---------- hero ---------- */
.hero{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;}
.hero-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,12,11,.96) 0%,rgba(16,26,20,.88) 48%,rgba(10,12,11,.42) 100%);}
.hero-inner{position:relative;z-index:2;padding-top:72px;padding-bottom:72px;}
.hero h1{font-size:clamp(32px,5.6vw,62px);line-height:1.16;max-width:900px;}
.hero-sub{color:var(--muted);font-size:16px;line-height:1.8;max-width:640px;margin-top:20px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.statbar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;margin-top:48px;max-width:820px;}
@media (min-width:768px){.statbar{grid-template-columns:repeat(4,minmax(0,1fr));}}
.statbar-item{background:rgba(10,12,11,.72);padding:18px 20px;}
.statbar-num{font-family:'Barlow Condensed','Oswald',sans-serif;font-size:30px;font-weight:700;color:var(--lime);line-height:1.1;}
.statbar-label{font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- asymmetric hot grid ---------- */
.hot-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:1024px){.hot-grid{grid-template-columns:repeat(4,minmax(0,1fr));}.hot-big{grid-column:span 2;grid-row:span 2;}}
.hot-big .cover{aspect-ratio:16/10;}
@media (min-width:1024px){.hot-big .cover{aspect-ratio:16/12;height:100%;}}
.hot-big-body{position:absolute;left:0;right:0;bottom:0;padding:22px;}

/* ---------- category entry ---------- */
.cat-card{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);min-height:230px;display:flex;flex-direction:column;justify-content:flex-end;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-float);border-color:rgba(203,255,60,.4);}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0;}
.cat-card-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,11,.2) 20%,rgba(10,12,11,.92) 100%);}
.cat-card-body{position:relative;z-index:2;padding:22px;}

/* ---------- news list ---------- */
.news-card{background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);padding:16px;display:flex;flex-direction:column;gap:14px;transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);}
.news-card:hover{border-color:rgba(203,255,60,.4);box-shadow:var(--sh-card);transform:translateY(-3px);}
@media (min-width:768px){.news-card{flex-direction:row;align-items:flex-start;padding:18px;}}
.news-thumb{width:100%;aspect-ratio:16/9;border-radius:var(--r-cover);object-fit:cover;}
@media (min-width:768px){.news-thumb{width:210px;flex:0 0 210px;}}
.news-title{font-size:18px;line-height:1.5;}
.news-excerpt{color:var(--muted);font-size:14px;line-height:1.8;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:12px;font-size:13px;color:var(--muted);}
.empty-state{min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;border:1px dashed var(--line);border-radius:var(--r-card);color:var(--muted);font-size:14px;text-align:center;padding:32px 20px;background:var(--ink);}
.empty-state svg{width:36px;height:36px;stroke:rgba(203,255,60,.4);}

/* ---------- faq ---------- */
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:var(--ink);margin-bottom:14px;overflow:hidden;transition:border-color var(--ease);}
.faq-item[open]{border-color:rgba(203,255,60,.4);}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-q{font-size:17px;font-weight:700;}
.faq-icon{flex:0 0 auto;width:22px;height:22px;border-radius:999px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--lime);font-size:14px;line-height:1;transition:transform var(--ease);}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-a{padding:0 20px 20px;color:var(--muted);font-size:15px;line-height:1.85;}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.cta-form input{flex:1 1 260px;height:46px;border-radius:var(--r-btn);background:var(--field);border:1px solid var(--line);color:var(--paper);padding:0 16px;font-size:15px;transition:border-color var(--ease),box-shadow var(--ease);}
.cta-form input::placeholder{color:var(--muted);}
.cta-form input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.18);}
.cta-note{color:var(--muted);font-size:13px;margin-top:12px;}

/* ---------- footer ---------- */
.site-footer{background:var(--carbon);padding-top:56px;}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;}}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-family:'Barlow Condensed','Oswald',sans-serif;color:var(--paper);margin-bottom:14px;}
.footer-link{display:block;font-size:14px;color:var(--muted);padding:5px 0;transition:color var(--ease);}
.footer-link:hover{color:var(--lime);}
.footer-desc{color:var(--muted);font-size:14px;line-height:1.8;margin-top:12px;max-width:340px;}
.footer-bottom{border-top:1px solid var(--divider);margin-top:44px;padding:20px 0 28px;font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: article */
:root{
  --carbon:#0A0C0B;
  --ink:#101A14;
  --surface:#121A15;
  --lime:#CBFF3C;
  --flame:#FF6A2B;
  --text:#F2F5F1;
  --muted:#9BA79F;
  --line:#23302A;
  --divider:#1A231E;
  --r-card:14px;
  --r-cover:10px;
  --r-btn:8px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-pop:0 24px 60px rgba(0,0,0,.55);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--carbon);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.02em;line-height:1.28}
p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.container-x{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container-x{padding:0 40px}}
.hide-scrollbar{-ms-overflow-style:none;scrollbar-width:none}
.hide-scrollbar::-webkit-scrollbar{display:none}
.num{font-family:"Barlow Condensed",Oswald,sans-serif;font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,12,11,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5)}
.topbar-inner{height:64px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;white-space:nowrap}
.brand-dot{width:10px;height:10px;border-radius:3px;background:var(--lime);box-shadow:0 0 12px rgba(203,255,60,.65);flex:none}
.search-box{
  flex:1;max-width:420px;height:40px;display:flex;align-items:center;gap:10px;
  padding:0 12px;background:#141A16;border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box svg{width:18px;height:18px;flex:none;stroke:var(--muted);fill:none}
.search-box input{flex:1;min-width:0;height:100%;background:transparent;border:0;outline:0;font-size:14px}
.search-box input::placeholder{color:var(--muted)}
.search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16)}
.search-toggle{display:none;width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);align-items:center;justify-content:center}
.search-toggle svg{width:18px;height:18px;stroke:var(--text);fill:none}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:18px}

.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--lime);color:#0A0C0B;font-weight:700;font-size:15px;
  padding:11px 20px;border-radius:var(--r-btn);
  transition:filter var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 4px rgba(203,255,60,.16)}
.btn-primary:active{transform:translateY(1px)}
.btn-primary.btn-sm{padding:8px 16px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid rgba(255,255,255,.3);color:#fff;font-weight:600;font-size:15px;
  padding:11px 20px;border-radius:var(--r-btn);
  transition:border-color var(--ease),background var(--ease),transform var(--ease);
}
.btn-ghost:hover{border-color:var(--lime);background:rgba(203,255,60,.06)}
.btn-ghost:active{transform:translateY(1px)}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--text);font-size:14px;font-weight:600;border-bottom:1px solid transparent;transition:color var(--ease)}
.text-link .arrow{transition:transform var(--ease);display:inline-block}
.text-link:hover{color:var(--lime)}
.text-link:hover .arrow{transform:translateX(2px)}

.channelnav{border-top:1px solid var(--divider)}
.channelnav-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto}
.chip{
  flex:none;display:inline-flex;align-items:center;
  padding:7px 14px;border-radius:999px;font-size:14px;color:var(--muted);
  border-bottom:3px solid transparent;border-radius:999px;
  transition:color var(--ease),background var(--ease),border-color var(--ease);
}
.chip:hover{color:#fff;background:rgba(255,255,255,.08)}
.chip-active{color:var(--lime);border-bottom:3px solid var(--lime);background:transparent;font-weight:700}

/* ---------- 面包屑 / 页头 ---------- */
.crumb-bar{padding:22px 0 0;font-size:13px;color:var(--muted)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--muted);transition:color var(--ease)}
.crumb a:hover{color:var(--lime)}
.crumb .sep{color:#4A5951}
.crumb .now{color:var(--text)}

.article-head{
  position:relative;margin-top:18px;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(90deg,rgba(10,12,11,.96) 0%,rgba(16,26,20,.82) 55%,rgba(16,26,20,.35) 100%),
             url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-head-inner{padding:32px 24px 30px;max-width:900px}
@media(min-width:1024px){.article-head-inner{padding:48px 48px 44px}}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-family:"Barlow Condensed",Oswald,sans-serif;font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  padding:5px 12px;border-radius:999px;
}
.badge-lime{background:rgba(203,255,60,.12);color:var(--lime)}
.badge-flame{background:rgba(255,106,43,.14);color:var(--flame)}
.article-h1{
  margin-top:16px;
  font-size:clamp(28px,6vw,56px);
  font-weight:800;
  line-height:1.2;
}
@media(min-width:1024px){.article-h1{font-size:clamp(36px,4.4vw,60px)}}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:18px;font-size:13px;color:var(--muted)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#3A473F}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--muted);
  transition:border-color var(--ease),color var(--ease);
}
.share-btn:hover{border-color:var(--lime);color:var(--lime)}
.share-btn svg{width:15px;height:15px;stroke:currentColor;fill:none}

/* ---------- 封面 ---------- */
.cover-wrap{margin-top:24px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:1fr;gap:40px;padding:40px 0 8px}
@media(min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;padding:56px 0 8px}
}
.prose{max-width:820px;font-size:17px;line-height:1.9;color:#E4EAE2}
.prose > * + *{margin-top:1.2em}
.prose h2{
  margin-top:2.2em;font-size:clamp(22px,2.4vw,30px);line-height:1.35;color:var(--text);
  padding-bottom:.4em;border-bottom:1px solid var(--divider);
}
.prose h3{
  margin-top:1.8em;font-size:19px;line-height:1.45;color:var(--text);
  padding-left:12px;border-left:3px solid var(--lime);
}
.prose h4{margin-top:1.5em;font-size:17px;color:var(--text)}
.prose p{margin:0}
.prose a{color:var(--lime);border-bottom:1px solid rgba(203,255,60,.4);transition:border-color var(--ease)}
.prose a:hover{border-color:var(--lime)}
.prose strong{color:var(--text)}
.prose ul,.prose ol{padding-left:1.4em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:.5em 0}
.prose li::marker{color:var(--lime)}
.prose blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--lime);
  background:rgba(203,255,60,.06);border-radius:0 var(--r-cover) var(--r-cover) 0;color:#DCE4D9;
}
.prose img{border-radius:var(--r-cover);margin:1.6em 0;width:100%}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:13px;color:var(--muted);margin-top:10px;text-align:center}
.prose hr{border:0;border-top:1px solid var(--divider);margin:2.4em 0}
.prose table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-cover);overflow:hidden;
}
.prose th,.prose td{padding:12px 14px;border-bottom:1px solid var(--divider);text-align:left}
.prose thead th{background:#141C17;color:var(--lime);font-weight:700}
.prose tbody tr:last-child td{border-bottom:0}
@media(max-width:640px){
  .prose table,.prose thead,.prose tbody,.prose tr,.prose th,.prose td{display:block;width:100%}
  .prose thead{display:none}
  .prose tr{border:1px solid var(--line);border-radius:var(--r-cover);padding:10px 12px;margin-bottom:14px;background:#121A15}
  .prose td{border:0;padding:6px 0}
  .prose td::before{content:attr(data-label);display:block;font-size:12px;color:var(--muted);letter-spacing:.08em}
}

/* ---------- 侧栏 ---------- */
.side-col{display:flex;flex-direction:column;gap:20px}
@media(min-width:1024px){.side-col{position:sticky;top:132px;align-self:start}}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px}
.side-title{display:flex;align-items:center;justify-content:space-between;font-size:15px;font-weight:800;margin-bottom:14px}
.side-title::before{content:""}
.hot-item{display:block;padding:12px 0;border-bottom:1px solid var(--divider);transition:color var(--ease)}
.hot-item:last-child{border-bottom:0;padding-bottom:0}
.hot-item:hover .hot-title{color:var(--lime)}
.hot-title{font-size:14px;font-weight:600;line-height:1.55;transition:color var(--ease)}
.hot-time{font-size:12px;color:var(--muted);margin-top:6px}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag-item{
  font-size:13px;padding:6px 12px;border-radius:999px;border:1px solid var(--line);color:var(--muted);
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.tag-item:hover{color:var(--lime);border-color:rgba(203,255,60,.5);background:rgba(203,255,60,.06)}

/* ---------- 上一篇 / 下一篇 ---------- */
.prevnext{display:grid;grid-template-columns:1fr;gap:14px;margin-top:48px}
@media(min-width:768px){.prevnext{grid-template-columns:1fr 1fr}}
.pn-card{
  display:block;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.pn-card:hover{border-color:rgba(203,255,60,.45);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.pn-label{font-family:"Barlow Condensed",Oswald,sans-serif;font-size:12px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.pn-title{font-size:16px;font-weight:700;margin-top:8px}

/* ---------- 相关推荐 ---------- */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-h2{font-size:clamp(24px,3vw,36px)}
.section-sub{color:var(--muted);font-size:14px;margin-top:10px;max-width:640px}
.grid-cards{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.grid-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.grid-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(203,255,60,.4);box-shadow:var(--shadow-card)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 400ms ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.card-badge{position:absolute;top:12px;left:12px;background:rgba(203,255,60,.14);color:var(--lime);backdrop-filter:blur(4px)}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:700;line-height:1.5}
.card-desc{font-size:14px;color:var(--muted);line-height:1.7}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:auto}

/* ---------- 返回入口 / CTA ---------- */
.cta-band{
  background:linear-gradient(90deg,rgba(16,26,20,.98),rgba(10,12,11,.98));
  border:1px solid var(--line);border-radius:var(--r-card);padding:36px 24px;
  display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
}
@media(min-width:1024px){.cta-band{grid-template-columns:1.2fr 1fr;padding:48px}}
.cta-h2{font-size:clamp(22px,2.6vw,32px)}
.cta-p{color:var(--muted);font-size:15px;margin-top:12px;max-width:560px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.field-input{
  flex:1;min-width:220px;height:46px;padding:0 14px;background:#141A16;border:1px solid var(--line);
  border-radius:var(--r-btn);color:var(--text);font-size:15px;transition:border-color var(--ease),box-shadow var(--ease);
}
.field-input::placeholder{color:var(--muted)}
.field-input:focus{outline:0;border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16)}
.form-note{font-size:13px;color:var(--muted);width:100%}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:40px 20px;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--surface);
}
.empty-state svg{width:48px;height:48px;stroke:rgba(203,255,60,.4);fill:none;stroke-width:1.5}
.empty-state p{color:var(--muted);font-size:14px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:80px;background:#080A09;border-top:1px solid var(--line);padding:56px 0 24px}
@media(min-width:1024px){.site-footer{margin-top:120px;padding:72px 0 28px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-desc{color:var(--muted);font-size:14px;margin-top:14px;max-width:320px;line-height:1.8}
.footer-title{color:var(--text);font-size:14px;font-weight:800;margin-bottom:14px;letter-spacing:.06em}
.footer-link{display:block;color:var(--muted);font-size:14px;padding:5px 0;transition:color var(--ease)}
.footer-link:hover{color:var(--lime)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--divider);font-size:12px;color:#6E7A73;
}

@media(max-width:1023px){
  .search-box{display:none}
  .search-toggle{display:inline-flex}
  .topbar-actions .text-link{display:none}
}
@media(max-width:640px){
  .brand{font-size:16px}
  .btn-primary.btn-sm{padding:8px 12px;font-size:13px}
  .section{padding:56px 0}
}

/* roulang page: category1 */
:root{
  --carbon:#0A0C0B;
  --ink:#101A14;
  --ink-2:#141A16;
  --lime:#CBFF3C;
  --flame:#FF6A2B;
  --text:#F2F5F1;
  --muted:#9BA79F;
  --line:#23302A;
  --line-soft:#1A231E;
  --radius-card:14px;
  --radius-cover:10px;
  --radius-btn:8px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-pop:0 24px 60px rgba(0,0,0,.55);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--carbon);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.num,.cond{font-family:'Barlow Condensed',Oswald,'PingFang SC',sans-serif;font-variant-numeric:tabular-nums;}

.container-x{width:100%;max-width:1280px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container-x{padding:0 40px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,12,11,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5);border-bottom-color:var(--line);}
.topbar-inner{position:relative;display:flex;align-items:center;gap:16px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;white-space:nowrap;color:var(--text);}
.brand:hover{color:var(--lime);}
.brand-dot{width:10px;height:10px;border-radius:999px;background:var(--lime);box-shadow:0 0 0 4px rgba(203,255,60,.14);flex:0 0 auto;}
.search-box{
  flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:8px;height:40px;
  padding:0 12px;background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16);}
.search-box svg{width:18px;height:18px;flex:0 0 auto;stroke:var(--muted);fill:none;}
.search-box input{flex:1;min-width:0;height:100%;background:transparent;border:0;outline:none;color:var(--text);font-size:14px;}
.search-box input::placeholder{color:var(--muted);}
.search-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--ink-2);}
.search-toggle svg{width:18px;height:18px;stroke:var(--text);fill:none;}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--radius-btn);
  background:var(--lime);color:#0A0C0B;font-weight:700;font-size:15px;
  transition:filter var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 4px rgba(203,255,60,.16);}
.btn-primary:active{transform:translateY(1px);}
.btn-sm{padding:8px 16px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.3);color:var(--text);font-weight:600;font-size:15px;background:transparent;
  transition:border-color var(--ease),background-color var(--ease),color var(--ease);
}
.btn-ghost:hover{border-color:var(--lime);background:rgba(203,255,60,.06);color:var(--lime);}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--muted);}
.text-link:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px;}
.text-link .arrow{transition:transform var(--ease);}
.text-link:hover .arrow{transform:translateX(2px);}
.channelnav{border-top:1px solid var(--line-soft);}
.channelnav-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;}
.chip{
  position:relative;display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;
  font-size:14px;color:var(--muted);white-space:nowrap;
  transition:color var(--ease),background-color var(--ease);
}
.chip:hover{color:#fff;background:rgba(255,255,255,.08);}
.chip-active{color:var(--lime);}
.chip-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:999px;background:var(--lime);}
.hide-scrollbar{scrollbar-width:none;-ms-overflow-style:none;}
.hide-scrollbar::-webkit-scrollbar{display:none;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(90deg,rgba(10,12,11,.96) 0%,rgba(10,12,11,.84) 46%,rgba(16,26,20,.6) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-soft);
  padding:36px 0 44px;
}
@media (min-width:1024px){.page-hero{padding:52px 0 64px;}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--text);}
.hero-grid{display:grid;gap:28px;}
@media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1fr) 260px;align-items:end;gap:48px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  border:1px solid rgba(203,255,60,.55);color:var(--lime);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-family:'Barlow Condensed',sans-serif;
  margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(32px,7vw,44px);font-weight:800;letter-spacing:.02em;margin-bottom:16px;line-height:1.2;
}
@media (min-width:1024px){.page-hero h1{font-size:clamp(44px,4vw,58px);}}
.page-hero h1 .hl{color:var(--lime);}
.hero-lead{max-width:760px;font-size:16px;color:#D5DCD6;}
@media (min-width:1024px){.hero-lead{font-size:17px;}}
.channel-switch{display:flex;flex-wrap:wrap;gap:8px;}
@media (min-width:1024px){.channel-switch{flex-direction:column;align-items:flex-start;gap:10px;}}
.channel-switch .label{
  width:100%;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
  font-family:'Barlow Condensed',sans-serif;margin-bottom:2px;
}
.switch-chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  border:1px solid var(--line);color:var(--muted);font-size:13px;background:rgba(16,26,20,.6);
  transition:border-color var(--ease),color var(--ease),background-color var(--ease);
}
.switch-chip:hover{border-color:var(--lime);color:var(--lime);background:rgba(203,255,60,.06);}
.switch-chip.is-current{border-color:var(--lime);color:var(--lime);background:rgba(203,255,60,.08);}

/* ---------- sections ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-tight{padding:48px 0;}
@media (min-width:1024px){.section-tight{padding:72px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:clamp(26px,4.6vw,38px);font-weight:800;}
.section-head p{color:var(--muted);font-size:15px;max-width:640px;margin-top:10px;}
.rule{height:1px;background:var(--line-soft);border:0;margin:0;}

/* ---------- guide figure ---------- */
.guide-figure{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.guide-figure img{width:100%;height:clamp(230px,40vw,460px);object-fit:cover;}
.guide-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,12,11,.9) 0%,rgba(10,12,11,.4) 55%,rgba(16,26,20,.12) 100%);
}
.guide-caption{position:relative;z-index:2;padding:22px;background:rgba(16,26,20,.94);}
@media (min-width:768px){
  .guide-caption{
    position:absolute;left:32px;bottom:32px;right:32px;max-width:560px;
    background:transparent;padding:0;
  }
}
.guide-caption .tag{
  display:inline-block;padding:4px 12px;border-radius:999px;margin-bottom:12px;
  background:rgba(203,255,60,.12);color:var(--lime);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-family:'Barlow Condensed',sans-serif;
}
.guide-caption h3{font-size:clamp(18px,2.2vw,24px);margin-bottom:10px;}
.guide-caption p{color:#D5DCD6;font-size:15px;}

/* ---------- entry cards ---------- */
.entry-grid{display:grid;gap:20px;grid-template-columns:1fr;margin-top:24px;}
@media (min-width:768px){.entry-grid{grid-template-columns:repeat(2,1fr);gap:24px;}}
@media (min-width:1280px){.entry-grid{grid-template-columns:repeat(4,1fr);}}
.entry-card{
  display:flex;flex-direction:column;background:var(--ink);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.entry-card:hover{transform:translateY(-3px);border-color:var(--lime);box-shadow:var(--shadow-card);}
.entry-card__media{position:relative;}
.entry-card__media img{width:100%;height:180px;object-fit:cover;}
.entry-card__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,11,.05),rgba(10,12,11,.78));}
.entry-card__num{
  position:absolute;right:14px;bottom:8px;z-index:2;
  font-family:'Barlow Condensed',sans-serif;font-size:42px;line-height:1;font-weight:700;
  color:var(--lime);text-shadow:0 6px 18px rgba(0,0,0,.75);
}
.entry-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.entry-card__body h3{font-size:18px;}
.entry-card__body p{color:var(--muted);font-size:14px;}
.entry-card__meta{
  margin-top:auto;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#7C8A82;
  font-family:'Barlow Condensed',sans-serif;
}

/* ---------- checklist ---------- */
.check-grid{display:grid;gap:28px;grid-template-columns:1fr;}
@media (min-width:1024px){.check-grid{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:44px;align-items:start;}}
.check-list{display:grid;gap:14px;}
.check-item{
  display:flex;gap:14px;align-items:flex-start;padding:18px 20px;
  background:var(--ink);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color var(--ease),background-color var(--ease);
}
.check-item:hover{border-color:rgba(203,255,60,.5);background:#121C16;}
.check-item .mark{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;margin-top:3px;
  border:1px solid var(--lime);background:rgba(203,255,60,.12);
  display:inline-flex;align-items:center;justify-content:center;color:var(--lime);font-size:12px;
}
.check-item h3{font-size:16px;margin-bottom:4px;}
.check-item p{color:var(--muted);font-size:14px;}

.stat-grid{display:grid;gap:14px;grid-template-columns:repeat(2,1fr);}
.stat-card{
  padding:20px;background:linear-gradient(160deg,#101A14,#0C130F);
  border:1px solid var(--line);border-radius:var(--radius-card);
}
.stat-card .k{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-family:'Barlow Condensed',sans-serif;}
.stat-card .v{font-family:'Barlow Condensed',sans-serif;font-size:34px;line-height:1.1;color:var(--lime);margin:8px 0 4px;}
.stat-card .d{font-size:13px;color:var(--muted);}
.meter{height:4px;border-radius:999px;background:#1B241E;margin-top:12px;overflow:hidden;}
.meter span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--lime),#7FD31F);}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--ink);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:4px 20px;transition:border-color var(--ease);
}
.faq-item:hover{border-color:rgba(203,255,60,.45);}
.faq-item[open]{border-color:rgba(203,255,60,.6);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary h3{font-size:16px;font-weight:600;}
.faq-item .plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--lime);font-size:16px;
  transition:transform var(--ease),border-color var(--ease);
}
.faq-item[open] .plus{transform:rotate(45deg);border-color:var(--lime);}
.faq-item .answer{padding:0 0 20px;color:#C6CFC8;font-size:15px;max-width:900px;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#101A14 0%,#0C130F 60%,#101A14 100%);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 24px;box-shadow:var(--shadow-card);
}
@media (min-width:1024px){.cta-band{padding:48px 44px;}}
.cta-inner{display:grid;gap:24px;}
@media (min-width:1024px){.cta-inner{grid-template-columns:minmax(0,1fr) minmax(0,420px);align-items:center;gap:48px;}}
.cta-band h2{font-size:clamp(24px,4vw,32px);margin-bottom:12px;}
.cta-band p{color:var(--muted);font-size:15px;max-width:620px;}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;}
.cta-form input{
  flex:1 1 200px;height:46px;padding:0 14px;border-radius:var(--radius-btn);
  background:var(--ink-2);border:1px solid var(--line);color:var(--text);font-size:15px;outline:none;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.cta-form input::placeholder{color:var(--muted);}
.cta-form input:focus{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16);}
.cta-note{width:100%;font-size:13px;color:var(--muted);}

/* ---------- footer ---------- */
.site-footer{background:#070908;border-top:1px solid var(--line-soft);padding:56px 0 28px;margin-top:8px;}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}}
.footer-desc{color:var(--muted);font-size:14px;margin-top:14px;max-width:340px;}
.footer-title{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#7C8A82;font-family:'Barlow Condensed',sans-serif;margin-bottom:14px;}
.footer-link{display:block;font-size:14px;color:var(--muted);padding:5px 0;}
.footer-link:hover{color:var(--lime);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:#6F7B74;
}

@media (max-width:900px){
  .search-box{display:none;}
  .search-toggle{display:inline-flex;}
  .topbar-actions .text-link{display:none;}
  .site-header.search-open .search-box{
    display:flex;position:absolute;left:20px;right:20px;top:12px;max-width:none;z-index:8;
    background:var(--ink-2);box-shadow:var(--shadow-pop);
  }
}
@media (max-width:520px){
  .topbar-actions .btn-primary{padding:8px 12px;font-size:13px;}
  .brand{font-size:16px;}
  .stat-grid{grid-template-columns:1fr;}
  .entry-card__media img{height:158px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category2 */
:root{
  --carbon:#0A0C0B;
  --ink:#101A14;
  --card:#0E1310;
  --input:#141A16;
  --lime:#CBFF3C;
  --flame:#FF6A2B;
  --line:#23302A;
  --divider:#1A231E;
  --text:#F2F5F1;
  --muted:#9BA79F;
  --r-card:14px;
  --r-cover:10px;
  --r-btn:8px;
  --sh-card:0 18px 40px rgba(0,0,0,.45);
  --sh-pop:0 24px 60px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:'PingFang SC','HarmonyOS Sans','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-cond:'Barlow Condensed','Oswald',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--carbon);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.02em;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(203,255,60,.28);}
.num{font-family:var(--font-cond);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.container-x{max-width:1280px;margin:0 auto;padding:0 40px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,12,11,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 200ms ease-out;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5);}
.topbar-inner{display:flex;align-items:center;gap:24px;height:64px;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:800;letter-spacing:.02em;color:var(--text);
  white-space:nowrap;
}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(203,255,60,.16);}
.search-box{
  flex:1;max-width:420px;display:flex;align-items:center;gap:10px;
  background:var(--input);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 14px;height:40px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.search-box svg{width:17px;height:17px;stroke:var(--muted);flex:none;}
.search-box input{flex:1;background:transparent;border:0;outline:none;font-size:14px;}
.search-box input::placeholder{color:#6E7A72;}
.search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16);}
.search-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  background:var(--input);border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;
}
.search-toggle svg{width:18px;height:18px;stroke:var(--text);}
.topbar-actions{display:flex;align-items:center;gap:18px;margin-left:auto;}
.channelnav{border-top:1px solid var(--divider);}
.channelnav-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;}
.chip{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;font-size:14px;color:var(--muted);
  white-space:nowrap;transition:color 200ms var(--ease),background 200ms var(--ease);
}
.chip:hover{color:var(--text);background:rgba(255,255,255,.08);}
.chip-active{color:var(--lime);}
.chip-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-14px;height:3px;
  background:var(--lime);border-radius:2px;
}
.chip-active:hover{color:var(--lime);background:rgba(203,255,60,.08);}

/* ---------- 按钮 ---------- */
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--lime);color:#0A0C0B;font-weight:700;font-size:15px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  transition:filter 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 4px rgba(203,255,60,.16);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:var(--text);font-weight:600;font-size:15px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.3);
  transition:border-color 200ms var(--ease),background 200ms var(--ease);
}
.btn-ghost:hover{border-color:var(--lime);background:rgba(203,255,60,.06);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--text);text-decoration:underline;text-decoration-color:rgba(203,255,60,.4);
  text-underline-offset:4px;
  transition:color 200ms var(--ease);
}
.text-link .arrow{transition:transform 200ms var(--ease);}
.text-link:hover{color:var(--lime);}
.text-link:hover .arrow{transform:translateX(2px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  background:rgba(203,255,60,.12);color:var(--lime);
  font-family:var(--font-cond);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
}
.badge-flame{background:rgba(255,106,43,.14);color:var(--flame);}
.badge-mute{background:rgba(255,255,255,.06);color:var(--muted);}
.tag-lime{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(203,255,60,.5);color:var(--lime);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-family:var(--font-cond);
}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  padding:52px 0 60px;
  background:
    linear-gradient(90deg,rgba(10,12,11,.95) 0%,rgba(10,12,11,.82) 42%,rgba(10,12,11,.42) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:26px;flex-wrap:wrap;}
.breadcrumb a{color:var(--muted);transition:color 200ms var(--ease);}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb .sep{color:#4A574F;}
.breadcrumb .current{color:var(--text);}
.page-hero-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(240px,.75fr);gap:48px;align-items:start;}
.page-hero h1{
  font-size:clamp(32px,4vw,58px);
  margin:20px 0 20px;
  max-width:16em;
}
.hero-lead{font-size:17px;color:#C6D0C9;max-width:44em;}
.hero-switch{
  border-left:1px solid var(--line);padding-left:24px;
  display:flex;flex-direction:column;gap:10px;align-items:flex-start;
}
.switch-label{
  font-family:var(--font-cond);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
  margin-bottom:4px;
}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:52px;border-top:1px solid var(--line);
}
.stat{padding:22px 24px;border-right:1px solid var(--divider);}
.stat:last-child{border-right:0;}
.stat-num{font-family:var(--font-cond);font-size:38px;font-weight:700;line-height:1;color:var(--lime);font-variant-numeric:tabular-nums;}
.stat-num.flame{color:var(--flame);}
.stat-label{font-size:13px;color:var(--muted);margin-top:8px;letter-spacing:.02em;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(26px,3vw,40px);}
.section-sub{font-size:15px;color:var(--muted);margin-top:12px;max-width:62ch;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;}
.timeline::before{
  content:"";position:absolute;left:96px;top:14px;bottom:14px;width:1px;background:var(--line);
}
.tl-item{
  position:relative;display:grid;grid-template-columns:96px minmax(0,1fr);
  gap:32px;padding:24px 0;
}
.tl-item + .tl-item{border-top:1px solid var(--divider);}
.tl-item::before{
  content:"";position:absolute;left:91px;top:34px;width:11px;height:11px;border-radius:50%;
  background:var(--carbon);border:2px solid var(--line);
}
.tl-item.is-live::before{border-color:var(--lime);background:var(--lime);box-shadow:0 0 0 4px rgba(203,255,60,.16);}
.tl-item.is-soon::before{border-color:var(--flame);}
.tl-time{text-align:right;padding-top:2px;}
.tl-clock{display:block;font-family:var(--font-cond);font-size:26px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;line-height:1.1;}
.tl-state{display:block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-family:var(--font-cond);color:var(--muted);margin-top:6px;}
.tl-item.is-live .tl-state{color:var(--lime);}
.tl-item.is-soon .tl-state{color:var(--flame);}
.tl-body h3{font-size:19px;margin-bottom:8px;}
.tl-body p{font-size:15px;color:var(--muted);max-width:70ch;}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:14px;}

/* ---------- 卡片网格 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(203,255,60,.4);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,11,.15) 0%,rgba(10,12,11,.78) 100%);
}
.card-badge{position:absolute;top:14px;left:14px;z-index:2;}
.card-count{position:absolute;right:14px;bottom:14px;z-index:2;font-family:var(--font-cond);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:#D8E0DA;}
.card-body{padding:22px 24px 26px;}
.card-body h3{font-size:19px;margin-bottom:10px;}
.card-body p{font-size:15px;color:var(--muted);}

/* ---------- 观看准备 ---------- */
.prep-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.prep-item{
  display:flex;gap:20px;align-items:flex-start;
  background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
}
.prep-num{font-family:var(--font-cond);font-size:34px;font-weight:700;line-height:1;color:rgba(203,255,60,.85);font-variant-numeric:tabular-nums;}
.prep-item h3{font-size:17px;margin-bottom:8px;}
.prep-item p{font-size:14px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:700;transition:background 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(203,255,60,.05);}
.faq-icon{
  flex:none;width:22px;height:22px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--lime);font-size:14px;line-height:1;
  transition:transform 200ms var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-a{padding:0 24px 22px;font-size:15px;color:var(--muted);max-width:78ch;}
.faq-item[open] summary{border-bottom:1px solid var(--divider);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--ink) 0%,#0D1712 100%);
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.9fr);gap:36px;align-items:center;
}
.cta-band h2{font-size:clamp(24px,2.6vw,34px);}
.cta-band p{font-size:15px;color:var(--muted);margin-top:12px;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;}
.field{
  flex:1;min-width:220px;height:48px;padding:0 16px;
  background:var(--input);border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text);outline:none;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field::placeholder{color:#6E7A72;}
.field:focus{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16);}
.form-note{font-size:13px;color:var(--muted);margin-top:12px;flex-basis:100%;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--carbon);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-desc{font-size:14px;color:var(--muted);margin-top:16px;max-width:34ch;}
.footer-title{
  font-family:var(--font-cond);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:#7E8B83;margin-bottom:16px;
}
.footer-link{display:block;font-size:14px;color:var(--muted);padding:5px 0;transition:color 200ms var(--ease);}
.footer-link:hover{color:var(--lime);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--divider);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#6E7A72;
}
.hide-scrollbar{-ms-overflow-style:none;scrollbar-width:none;}
.hide-scrollbar::-webkit-scrollbar{display:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container-x{padding:0 24px;}
  .section{padding:72px 0;}
  .page-hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-switch{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:22px;flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px;}
  .switch-label{width:100%;margin-bottom:0;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--divider);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 32px;}
  .cta-band{grid-template-columns:1fr;padding:36px;}
  .grid-cards{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .search-box{display:none;}
  .search-toggle{display:flex;}
  .topbar-actions .text-link{display:none;}
  .timeline::before{display:none;}
  .tl-item{grid-template-columns:1fr;gap:12px;padding:22px 0;}
  .tl-item::before{display:none;}
  .tl-time{display:flex;align-items:baseline;gap:12px;text-align:left;}
  .tl-state{margin-top:0;}
  .grid-cards,.prep-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container-x{padding:0 20px;}
  body{font-size:16px;}
  .section{padding:56px 0;}
  .page-hero{padding:36px 0 44px;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--divider);padding:16px 0;}
  .stat:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:26px;}
  .brand{font-size:16px;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
    --carbon:#0A0C0B;
    --ink:#101A14;
    --lime:#CBFF3C;
    --flame:#FF6A2B;
    --text:#F2F5F1;
    --muted:#9BA79F;
    --line:#23302A;
    --divider:#1A231E;
    --field:#141A16;
    --r-card:14px;
    --r-cover:10px;
    --r-btn:8px;
    --shadow-card:0 18px 40px rgba(0,0,0,.45);
    --shadow-pop:0 24px 60px rgba(0,0,0,.55);
    --ease:200ms ease-out;
    --shell:1280px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--carbon);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;border-style:none;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  button{background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p,figure{margin:0;}
  h1,h2,h3,h4{font-weight:800;letter-spacing:.02em;line-height:1.25;}
  p{color:var(--muted);}
  ::selection{background:rgba(203,255,60,.28);color:#fff;}
  :focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}
  .num{font-family:"Barlow Condensed","Oswald","Arial Narrow",sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.02em;}

  .container-x{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px;}
  @media (min-width:1024px){.container-x{padding:0 40px;}}

  .hide-scrollbar{-ms-overflow-style:none;scrollbar-width:none;}
  .hide-scrollbar::-webkit-scrollbar{display:none;}

  /* ---------- 顶部导航 ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:rgba(10,12,11,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow var(--ease);}
  .site-header.is-stuck{box-shadow:0 8px 24px rgba(0,0,0,.5);}
  .topbar-inner{display:flex;align-items:center;gap:16px;height:64px;}
  .brand{display:inline-flex;align-items:center;gap:8px;font-size:19px;font-weight:800;letter-spacing:.02em;color:#fff;white-space:nowrap;}
  .brand-dot{width:9px;height:9px;border-radius:999px;background:var(--lime);box-shadow:0 0 0 4px rgba(203,255,60,.16);}
  .search-box{flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;background:var(--field);border:1px solid var(--line);border-radius:var(--r-btn);transition:border-color var(--ease),box-shadow var(--ease);}
  .search-box svg{width:16px;height:16px;stroke:var(--muted);flex:none;}
  .search-box input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:14px;}
  .search-box input::placeholder{color:#6E7A73;}
  .search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16);}
  .search-toggle{display:none;width:38px;height:38px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--field);}
  .search-toggle svg{width:17px;height:17px;stroke:var(--text);}
  .topbar-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
  .text-link{display:inline-flex;align-items:center;gap:4px;font-size:14px;color:var(--muted);transition:color var(--ease);}
  .text-link .arrow{transition:transform var(--ease);}
  .text-link:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px;}
  .text-link:hover .arrow{transform:translateX(2px);}

  .btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--lime);color:#0A0C0B;font-weight:700;font-size:15px;padding:11px 22px;border-radius:var(--r-btn);transition:filter var(--ease),box-shadow var(--ease),transform var(--ease);}
  .btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 4px rgba(203,255,60,.16);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-sm{padding:8px 16px;font-size:14px;}
  .btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:transparent;color:#fff;font-weight:600;font-size:15px;padding:11px 22px;border:1px solid rgba(255,255,255,.3);border-radius:var(--r-btn);transition:border-color var(--ease),background var(--ease),color var(--ease);}
  .btn-ghost:hover{border-color:var(--lime);background:rgba(203,255,60,.06);color:var(--lime);}
  .btn-ghost:active{transform:translateY(1px);}

  .channelnav{border-top:1px solid var(--divider);background:rgba(16,26,20,.72);}
  .channelnav-inner{display:flex;align-items:center;gap:6px;height:48px;overflow-x:auto;}
  .chip{display:inline-flex;align-items:center;padding:8px 14px 5px;border-radius:999px;border-bottom:3px solid transparent;font-size:14px;color:var(--muted);white-space:nowrap;transition:color var(--ease),background var(--ease),border-color var(--ease);}
  .chip:hover{color:#fff;background:rgba(255,255,255,.08);}
  .chip-active{color:var(--lime);border-bottom-color:var(--lime);font-weight:700;}

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0;}
  @media (min-width:1024px){.section{padding:96px 0;}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px;}
  .section-head h2{font-size:clamp(26px,3.4vw,40px);}
  .section-head p{max-width:620px;font-size:15px;margin-top:8px;}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:"Barlow Condensed","Oswald",sans-serif;text-transform:uppercase;letter-spacing:.14em;font-size:12px;color:var(--lime);}
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--lime);}

  /* ---------- 内页 Hero ---------- */
  .page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
  .page-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;}
  .page-hero-mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,12,11,.96) 0%,rgba(10,12,11,.86) 42%,rgba(16,26,20,.55) 74%,rgba(16,26,20,.35) 100%);}
  .page-hero-inner{position:relative;display:grid;gap:28px;padding:44px 0 48px;}
  @media (min-width:1024px){.page-hero-inner{grid-template-columns:minmax(0,1fr) 300px;align-items:end;padding:72px 0 76px;}}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
  .breadcrumb a:hover{color:var(--lime);}
  .breadcrumb .sep{color:#4A574F;}
  .page-hero h1{font-size:clamp(32px,5vw,60px);margin:18px 0 14px;}
  .page-hero-lead{font-size:16px;max-width:660px;color:#C6D0C9;}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
  .badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-family:"Barlow Condensed","Oswald",sans-serif;text-transform:uppercase;letter-spacing:.12em;font-size:12px;}
  .badge-lime{background:rgba(203,255,60,.12);color:var(--lime);}
  .badge-flame{background:rgba(255,106,43,.14);color:var(--flame);}
  .badge-outline{border:1px solid var(--line);color:var(--muted);}
  .hero-switch{align-self:start;background:rgba(10,12,11,.72);border:1px solid var(--line);border-radius:var(--r-card);padding:18px;}
  .hero-switch .switch-title{font-family:"Barlow Condensed","Oswald",sans-serif;text-transform:uppercase;letter-spacing:.14em;font-size:12px;color:var(--muted);margin-bottom:12px;}
  .hero-switch .switch-list{display:flex;flex-wrap:wrap;gap:8px;}
  .switch-link{display:inline-flex;align-items:center;padding:7px 13px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:var(--muted);transition:all var(--ease);}
  .switch-link:hover{color:var(--lime);border-color:var(--lime);background:rgba(203,255,60,.06);}
  .switch-link.is-current{background:rgba(203,255,60,.12);color:var(--lime);border-color:rgba(203,255,60,.4);}

  /* ---------- 概览数据条 ---------- */
  .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  @media (min-width:1024px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}}
  .stat-card{background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;transition:border-color var(--ease),transform var(--ease);}
  .stat-card:hover{border-color:rgba(203,255,60,.45);transform:translateY(-2px);}
  .stat-value{font-family:"Barlow Condensed","Oswald",sans-serif;font-size:38px;line-height:1;color:var(--lime);font-variant-numeric:tabular-nums;}
  .stat-label{font-size:15px;color:#fff;margin-top:10px;font-weight:600;}
  .stat-note{font-size:13px;color:var(--muted);margin-top:6px;}

  /* ---------- 分步指南：左右分栏 ---------- */
  .guide-layout{display:grid;gap:28px;}
  @media (min-width:1024px){.guide-layout{grid-template-columns:280px minmax(0,1fr);gap:40px;align-items:start;}}
  .toc{background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;}
  @media (min-width:1024px){.toc{position:sticky;top:132px;}}
  .toc-title{font-size:18px;font-weight:800;margin-bottom:6px;}
  .toc-sub{font-size:13px;color:var(--muted);margin-bottom:14px;}
  .toc-list{display:flex;flex-wrap:wrap;gap:6px;}
  @media (min-width:1024px){.toc-list{flex-direction:column;flex-wrap:nowrap;gap:2px;}}
  .toc-link{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;font-size:14px;color:var(--muted);border-left:2px solid transparent;transition:all var(--ease);}
  .toc-link:hover{color:#fff;background:rgba(255,255,255,.05);border-left-color:var(--lime);}
  .toc-index{font-family:"Barlow Condensed","Oswald",sans-serif;font-size:13px;color:var(--flame);}

  .step-stack{display:grid;gap:18px;}
  .step-card{position:relative;background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px 22px;transition:border-color var(--ease),box-shadow var(--ease);}
  .step-card:hover{border-color:rgba(203,255,60,.4);box-shadow:var(--shadow-card);}
  .step-num{font-family:"Barlow Condensed","Oswald",sans-serif;font-size:46px;line-height:1;color:rgba(203,255,60,.35);font-variant-numeric:tabular-nums;}
  .step-card h3{font-size:19px;margin:10px 0 10px;}
  .step-card p{font-size:15px;}
  .step-points{margin-top:14px;display:grid;gap:8px;}
  .step-points li{position:relative;padding-left:18px;font-size:14px;color:#C6D0C9;}
  .step-points li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--lime);transform:rotate(45deg);}
  .step-meta{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}

  /* ---------- 操作对照卡片流 ---------- */
  .map-grid{display:grid;gap:16px;}
  @media (min-width:768px){.map-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
  @media (min-width:1280px){.map-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
  .map-card{background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;display:grid;gap:10px;transition:border-color var(--ease),transform var(--ease);}
  .map-card:hover{border-color:rgba(255,106,43,.45);transform:translateY(-2px);}
  .map-card h3{font-size:17px;}
  .map-row{display:flex;gap:10px;font-size:14px;color:var(--muted);}
  .map-key{flex:none;width:66px;color:#7D8A82;font-size:13px;}
  .map-val{color:#D7DED9;}
  .map-card .map-note{border-top:1px solid var(--divider);padding-top:10px;font-size:13px;color:var(--muted);}

  /* ---------- 设备建议 ---------- */
  .device-layout{display:grid;gap:24px;}
  @media (min-width:1024px){.device-layout{grid-template-columns:minmax(0,1fr) 420px;align-items:center;gap:40px;}}
  .device-list{display:grid;gap:14px;margin-top:22px;}
  .device-item{display:flex;gap:14px;background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);padding:18px;transition:border-color var(--ease);}
  .device-item:hover{border-color:rgba(203,255,60,.4);}
  .device-icon{flex:none;width:40px;height:40px;border-radius:10px;background:rgba(203,255,60,.12);display:flex;align-items:center;justify-content:center;}
  .device-icon svg{width:20px;height:20px;stroke:var(--lime);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .device-item h3{font-size:17px;margin-bottom:4px;}
  .device-item p{font-size:14px;}
  .device-figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--ink);}
  .device-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .device-figure figcaption{padding:14px 18px;font-size:13px;color:var(--muted);border-top:1px solid var(--divider);}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:12px;max-width:900px;}
  .faq-item{background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color var(--ease);}
  .faq-item:hover{border-color:rgba(203,255,60,.35);}
  .faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;padding:20px 22px;}
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary h3{font-size:17px;font-weight:700;flex:1;}
  .faq-mark{flex:none;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--lime);font-size:15px;transition:transform var(--ease);}
  .faq-item[open] .faq-mark{transform:rotate(45deg);border-color:rgba(203,255,60,.5);}
  .faq-answer{padding:0 22px 22px;font-size:15px;border-top:1px solid var(--divider);padding-top:16px;color:var(--muted);}

  /* ---------- CTA 条 ---------- */
  .cta-band{background:var(--ink);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .cta-inner{display:grid;gap:22px;padding:48px 0;}
  @media (min-width:1024px){.cta-inner{grid-template-columns:minmax(0,1fr) 460px;align-items:center;gap:40px;padding:64px 0;}}
  .cta-inner h2{font-size:clamp(24px,3vw,34px);margin-bottom:10px;}
  .cta-form{display:flex;flex-wrap:wrap;gap:12px;}
  .cta-form input{flex:1 1 220px;min-width:0;height:48px;padding:0 16px;background:var(--field);border:1px solid var(--line);border-radius:var(--r-btn);font-size:15px;outline:none;transition:border-color var(--ease),box-shadow var(--ease);}
  .cta-form input::placeholder{color:#6E7A73;}
  .cta-form input:focus{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16);}
  .cta-note{font-size:13px;color:var(--muted);margin-top:12px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--carbon);border-top:1px solid var(--line);padding:56px 0 28px;}
  .footer-grid{display:grid;gap:32px;}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}}
  .footer-desc{font-size:14px;color:var(--muted);margin-top:14px;max-width:340px;}
  .footer-title{font-family:"Barlow Condensed","Oswald",sans-serif;text-transform:uppercase;letter-spacing:.14em;font-size:12px;color:#7D8A82;margin-bottom:14px;}
  .footer-link{display:block;font-size:14px;color:var(--muted);margin-bottom:10px;transition:color var(--ease);}
  .footer-link:hover{color:var(--lime);}
  .footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--divider);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12px;color:#7D8A82;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .topbar-actions .text-link{display:none;}
  }
  @media (max-width:767px){
    .search-box{display:none;}
    .search-toggle{display:inline-flex;}
    .topbar-inner{gap:10px;}
    .brand{font-size:17px;}
    .footer-bottom{flex-direction:column;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  }

/* roulang page: category4 */
:root{
  --carbon:#0A0C0B;
  --ink:#101A14;
  --ink-2:#0D1410;
  --lime:#CBFF3C;
  --flame:#FF6A2B;
  --text:#F2F5F1;
  --muted:#9BA79F;
  --line:#23302A;
  --divider:#1A231E;
  --field:#141A16;
  --r-card:14px;
  --r-cover:10px;
  --r-btn:8px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-float:0 24px 60px rgba(0,0,0,.55);
  --tr:200ms ease-out;
  --font-cn:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed","Oswald",var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--carbon);color:var(--text);font-family:var(--font-cn);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
[hidden]{display:none !important}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.container-x{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container-x{padding:0 40px}}
.hide-scrollbar{scrollbar-width:none;-ms-overflow-style:none}
.hide-scrollbar::-webkit-scrollbar{display:none}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50}
.topbar{position:relative;background:rgba(10,12,11,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow var(--tr)}
.site-header.is-scrolled .topbar{box-shadow:0 8px 24px rgba(0,0,0,.5)}
.topbar-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand-dot{width:9px;height:9px;border-radius:999px;background:var(--lime);box-shadow:0 0 0 4px rgba(203,255,60,.14)}
.search-box{flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:10px;height:40px;padding:0 14px;background:var(--field);border:1px solid var(--line);border-radius:var(--r-btn);transition:border-color var(--tr),box-shadow var(--tr)}
.search-box svg{width:16px;height:16px;stroke:var(--muted);flex:0 0 16px}
.search-box input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:#6F7B74}
.search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16)}
.search-toggle{display:none}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
@media (max-width:900px){
  .search-box{display:none}
  .search-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;background:var(--field);border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer}
  .search-toggle svg{width:17px;height:17px;stroke:var(--muted)}
  .site-header.search-open .search-box{display:flex;position:absolute;top:calc(100% + 8px);left:20px;right:20px;max-width:none;z-index:60;background:#0F1512;box-shadow:var(--shadow-float)}
}
@media (max-width:640px){
  .topbar-inner{gap:12px}
  .brand{font-size:16px}
  .btn-primary.btn-sm{padding:8px 12px;font-size:13px}
  .text-link{display:none}
}
.channelnav{background:rgba(10,12,11,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.channelnav-inner{display:flex;align-items:center;gap:4px;height:48px;overflow-x:auto;scroll-snap-type:x proximity}
.chip{display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;font-size:14px;color:var(--muted);white-space:nowrap;scroll-snap-align:start;transition:color var(--tr),background var(--tr)}
.chip:hover{color:#fff;background:rgba(255,255,255,.08)}
.chip-active{position:relative;color:var(--lime)}
.chip-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:999px;background:var(--lime)}

/* ---------- buttons ---------- */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;background:var(--lime);color:#0A0C0B;font-weight:700;font-size:15px;border:0;border-radius:var(--r-btn);cursor:pointer;transition:filter var(--tr),box-shadow var(--tr),transform var(--tr)}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 4px rgba(203,255,60,.16)}
.btn-primary:active{transform:translateY(1px)}
.btn-sm{padding:8px 16px;font-size:14px}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;background:transparent;color:#fff;font-weight:600;font-size:15px;border:1px solid rgba(255,255,255,.3);border-radius:var(--r-btn);cursor:pointer;transition:border-color var(--tr),background var(--tr),color var(--tr)}
.btn-ghost:hover{border-color:var(--lime);background:rgba(203,255,60,.06);color:#fff}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14px;transition:color var(--tr)}
.text-link .arrow{transition:transform var(--tr)}
.text-link:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.text-link:hover .arrow{transform:translateX(2px)}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background-image:linear-gradient(90deg,rgba(10,12,11,.96) 0%,rgba(10,12,11,.84) 44%,rgba(16,26,20,.58) 100%),url("/assets/images/backpic/back-2.webp");background-size:cover;background-position:center}
.page-hero-inner{padding:40px 0 48px}
@media (min-width:1024px){.page-hero-inner{padding:56px 0 64px}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb .sep{color:#4A554E}
.breadcrumb .cur{color:#D7DED9}
.hero-grid{display:grid;grid-template-columns:1fr;gap:28px;margin-top:22px}
@media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1fr) 260px;gap:48px;align-items:end}}
.tag-lime{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border:1px solid rgba(203,255,60,.5);border-radius:999px;color:var(--lime);font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-family:var(--font-num)}
.page-title{font-size:clamp(32px,6vw,60px);font-weight:800;margin-top:18px;max-width:18em}
.page-sub{margin-top:16px;color:#C6CFC9;font-size:16px;line-height:1.8;max-width:44em}
.hero-channels{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
@media (min-width:1024px){.hero-channels{flex-direction:column;align-items:flex-start;margin-top:0}}
.hero-channels .chip{border:1px solid var(--line)}
.hero-channels .chip-active{border-color:rgba(203,255,60,.5);background:rgba(203,255,60,.08)}
.hero-channels .chip-active::after{display:none}

/* ---------- generic section ---------- */
.section{padding:56px 0;border-bottom:1px solid var(--divider)}
@media (min-width:1024px){.section{padding:96px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-title{font-size:clamp(24px,4vw,38px);font-weight:800}
.section-sub{margin-top:10px;color:var(--muted);font-size:15px;max-width:56em}
.eyebrow{font-family:var(--font-num);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--flame);margin-bottom:10px}

/* ---------- stat strip ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
@media (min-width:900px){.stat-strip{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-cell{background:linear-gradient(180deg,#101A14,#0C120E);padding:22px 20px}
.stat-value{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;color:var(--lime);line-height:1}
.stat-label{margin-top:8px;font-size:13px;color:var(--muted)}

/* ---------- check steps ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}
@media (min-width:900px){.check-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}}
.check-card{position:relative;background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px;transition:border-color var(--tr),transform var(--tr),box-shadow var(--tr)}
.check-card:hover{border-color:rgba(203,255,60,.4);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.check-num{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--flame);line-height:1}
.check-title{margin-top:12px;font-size:18px;font-weight:700}
.check-text{margin-top:10px;color:var(--muted);font-size:14.5px;line-height:1.8}

/* ---------- filter + faq ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filter-tab{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--muted);font-size:14px;cursor:pointer;transition:color var(--tr),border-color var(--tr),background var(--tr)}
.filter-tab:hover{color:#fff;background:rgba(255,255,255,.08)}
.filter-tab.is-active{color:var(--lime);border-color:rgba(203,255,60,.5);background:rgba(203,255,60,.1)}
.filter-tab .count{font-family:var(--font-num);font-size:13px;color:#6F7B74}
.filter-tab.is-active .count{color:var(--lime)}
.qa-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:18px;font-size:13px;color:var(--muted)}
.qa-magazine{display:grid;grid-template-columns:1fr;gap:16px;align-items:start}
@media (min-width:900px){.qa-magazine{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}}
.qa-item{background:linear-gradient(180deg,#101A14,#0C120E);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;transition:border-color var(--tr),box-shadow var(--tr)}
.qa-item:hover{border-color:#2E3D34}
.qa-item[open]{border-color:rgba(203,255,60,.38);box-shadow:var(--shadow-card)}
.qa-item summary{list-style:none;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;cursor:pointer}
.qa-item summary::-webkit-details-marker{display:none}
.qa-q{font-size:17px;font-weight:700;line-height:1.55}
.qa-cat{display:inline-block;margin-bottom:10px;padding:3px 10px;border-radius:999px;background:rgba(203,255,60,.12);color:var(--lime);font-family:var(--font-num);font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.qa-mark{position:relative;flex:0 0 22px;width:22px;height:22px;margin-top:4px;border:1px solid var(--line);border-radius:6px}
.qa-mark::before,.qa-mark::after{content:"";position:absolute;left:50%;top:50%;background:var(--lime);transform:translate(-50%,-50%)}
.qa-mark::before{width:10px;height:2px}
.qa-mark::after{width:2px;height:10px;transition:transform var(--tr)}
.qa-item[open] .qa-mark::after{transform:translate(-50%,-50%) scaleY(0)}
.qa-body{margin-top:14px;padding-top:14px;border-top:1px solid var(--divider);color:#C6CFC9;font-size:15px;line-height:1.85}
.qa-body p+p{margin-top:10px}
.qa-body strong{color:#fff;font-weight:600}

/* ---------- related channels ---------- */
.rel-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:768px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}}
.rel-card{display:flex;align-items:center;gap:18px;padding:18px 20px;background:var(--ink);border:1px solid var(--line);border-radius:var(--r-card);transition:border-color var(--tr),background var(--tr),transform var(--tr)}
.rel-card:hover{border-color:rgba(203,255,60,.4);background:#132018;transform:translateY(-2px)}
.rel-thumb{flex:0 0 88px;width:88px;height:56px;border-radius:var(--r-cover);overflow:hidden;background:linear-gradient(135deg,#0A0C0B,#101A14)}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-main{min-width:0;flex:1 1 auto}
.rel-title{font-size:17px;font-weight:700}
.rel-desc{margin-top:6px;color:var(--muted);font-size:13.5px;line-height:1.7}
.rel-arrow{color:var(--muted);font-size:18px;transition:color var(--tr),transform var(--tr)}
.rel-card:hover .rel-arrow{color:var(--lime);transform:translateX(3px)}

/* ---------- form band ---------- */
.form-band{display:grid;grid-template-columns:1fr;gap:28px;background:linear-gradient(120deg,#101A14 0%,#0C120E 100%);border:1px solid var(--line);border-radius:var(--r-card);padding:28px 24px}
@media (min-width:1024px){.form-band{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;padding:40px}}
.field{width:100%;height:48px;padding:0 16px;background:var(--field);border:1px solid var(--line);border-radius:var(--r-btn);color:var(--text);font-size:15px;outline:none;transition:border-color var(--tr),box-shadow var(--tr)}
.field::placeholder{color:#6F7B74}
.field:focus{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,255,60,.16)}
textarea.field{height:auto;padding:14px 16px;resize:vertical;line-height:1.7}
.form-row{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width:640px){.form-row.two{grid-template-columns:repeat(2,minmax(0,1fr))}}
.form-hint{margin-top:12px;font-size:13px;color:var(--muted)}
.form-actions{margin-top:18px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* ---------- cta band ---------- */
.cta-band{background:linear-gradient(120deg,#101A14 0%,#0B110D 55%,#131F17 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-inner{padding:48px 0;display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
@media (min-width:1024px){.cta-inner{padding:64px 0;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px}}
.cta-title{font-size:clamp(24px,4vw,36px);font-weight:800}
.cta-text{margin-top:12px;color:var(--muted);font-size:15px;max-width:38em}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form .field{flex:1 1 240px}
.cta-foot{margin-top:12px;font-size:13px;color:#6F7B74}

/* ---------- footer ---------- */
.site-footer{background:var(--carbon);border-top:1px solid var(--line);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-desc{margin-top:14px;color:var(--muted);font-size:14px;line-height:1.8;max-width:22em}
.footer-title{font-family:var(--font-num);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-bottom:14px}
.footer-link{display:block;color:var(--muted);font-size:14px;padding:6px 0;transition:color var(--tr)}
.footer-link:hover{color:var(--lime)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--divider);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px;color:#6E7A73}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}