/* roulang page: index */
:root{
  --bg:#05070F;
  --bg-soft:#080C18;
  --panel:#0A1020;
  --raised:#101833;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#EAF0FF;
  --muted:#A9B6D3;
  --dim:#6E7C9B;
  --blue:#2F6BFF;
  --cyan:#22E0C8;
  --amber:#FFB03A;
  --danger:#FF6B6B;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.85);
  --glass:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --sec:104px;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:var(--nav-h);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 10% -10%,rgba(47,107,255,.20),transparent 62%),
    radial-gradient(780px 460px at 92% 2%,rgba(34,224,200,.10),transparent 60%),
    linear-gradient(180deg,#05070F,#070A14 55%,#05070F);
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.55;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:radial-gradient(circle at 50% 12%,#000 0%,transparent 76%);
  mask-image:radial-gradient(circle at 50% 12%,#000 0%,transparent 76%);
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color var(--t),opacity var(--t)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid rgba(34,224,200,.6);outline-offset:2px;border-radius:6px
}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800}
h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700}
h3{font-size:clamp(18px,1.6vw,22px);line-height:1.4;font-weight:600}
h4{font-size:16px;line-height:1.45;font-weight:600}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}
.container{max-width:1200px;padding-left:24px;padding-right:24px;position:relative;z-index:1}
main,header.site-header,footer.site-footer{position:relative;z-index:1}
.section{padding:var(--sec) 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.sec-head__text{max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
  letter-spacing:.14em;color:var(--cyan);margin-bottom:12px
}
.eyebrow::before{content:"";width:20px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
.sec-sub{color:var(--muted);font-size:16px;margin:12px 0 0}
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.07);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .glass{background:#0A1020;}
}

/* ---------- 按钮 ---------- */
.btn-rl{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 24px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;transition:all var(--t);white-space:nowrap
}
.btn-rl i{font-size:14px}
.btn-primary-rl{
  background:linear-gradient(135deg,#2F6BFF,#22E0C8);color:#04121C;
  box-shadow:0 10px 30px -10px rgba(47,107,255,.65),inset 0 1px 0 rgba(255,255,255,.4)
}
.btn-primary-rl:hover{transform:translateY(-2px);filter:brightness(1.08);
  box-shadow:0 14px 40px -10px rgba(47,107,255,.85),inset 0 1px 0 rgba(255,255,255,.5)}
.btn-primary-rl:active{transform:translateY(0);box-shadow:0 6px 16px -10px rgba(47,107,255,.7),inset 0 2px 10px rgba(0,0,0,.35)}
.btn-ghost-rl{
  background:var(--glass);border-color:var(--line-strong);color:var(--text);
  backdrop-filter:blur(14px) saturate(140%)
}
.btn-ghost-rl:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(34,224,200,.07);transform:translateY(-2px)}
.btn-ghost-rl:active{transform:translateY(0)}
.btn-sm-rl{padding:10px 18px;font-size:14px;border-radius:10px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:14px;font-weight:600}
.link-arrow span{transition:transform var(--t)}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 徽章 ---------- */
.badge-rl{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1.5;letter-spacing:.02em
}
.badge-info{color:var(--cyan);border:1px solid rgba(34,224,200,.4);background:rgba(34,224,200,.07)}
.badge-status{color:var(--amber);background:rgba(255,176,58,.12);border:1px solid rgba(255,176,58,.28)}
.badge-cat{color:#C9E7E2;background:rgba(5,10,20,.72);border:1px solid rgba(34,224,200,.35);backdrop-filter:blur(8px)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;height:var(--nav-h);
  background:rgba(6,9,18,.62);
  border-bottom:1px solid rgba(255,255,255,.06);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  transition:height var(--t),background var(--t),border-color var(--t)
}
.site-header.is-scrolled{
  height:60px;background:rgba(5,7,15,.9);
  backdrop-filter:blur(20px) saturate(150%);
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  border-bottom-color:transparent
}
.site-header.is-scrolled::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,224,200,.7),transparent)
}
.header-inner{
  max-width:1280px;margin:0 auto;height:100%;padding:0 24px;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px
}
.nav-side{display:flex;align-items:center;gap:6px}
.nav-side--right{justify-content:flex-end}
.nav-link-rl{
  position:relative;padding:9px 12px;font-size:15px;font-weight:500;color:var(--muted);border-radius:999px;
  transition:color var(--t),background var(--t)
}
.nav-link-rl::after{
  content:"";position:absolute;left:50%;right:50%;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
  box-shadow:0 0 10px rgba(34,224,200,.7);transition:left var(--t),right var(--t)
}
.nav-link-rl:hover{color:var(--text)}
.nav-link-rl:hover::after{left:14px;right:14px}
.nav-link-rl.active{color:var(--text);background:rgba(34,224,200,.09)}
.nav-link-rl.active::after{left:14px;right:14px}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.brand:hover{color:var(--text)}
.brand__mark{
  width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;
  font-size:14px;font-weight:800;letter-spacing:.02em;color:#04121C;
  background:linear-gradient(135deg,#2F6BFF,#22E0C8);
  clip-path:polygon(14% 0,100% 0,100% 86%,86% 100%,0 100%,0 14%);
  box-shadow:0 8px 22px -10px rgba(47,107,255,.9)
}
.brand__text{white-space:nowrap}
.menu-toggle{
  display:none;width:42px;height:42px;place-items:center;border-radius:12px;
  border:1px solid var(--line-strong);background:var(--glass);color:var(--text);font-size:17px;cursor:pointer
}
.mobile-drawer{
  position:fixed;top:var(--nav-h);left:0;right:0;z-index:1025;padding:18px 20px 26px;
  background:rgba(6,9,18,.97);border-bottom:1px solid rgba(34,224,200,.25);
  transform:translateY(-12px);opacity:0;visibility:hidden;transition:all var(--t)
}
.mobile-drawer.open{transform:translateY(0);opacity:1;visibility:visible}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:16px;color:var(--muted);border-bottom:1px dashed rgba(255,255,255,.09)
}
.mobile-drawer a.active,.mobile-drawer a:hover{color:var(--cyan)}
.mobile-drawer .btn-rl{width:100%;margin-top:18px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:64px 0 88px;min-height:560px;overflow:hidden}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.hero h1{margin-bottom:18px}
.hero h1 .hl{
  background:linear-gradient(135deg,#2F6BFF,#22E0C8);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.hero__lead{font-size:17px;color:var(--muted);max-width:600px;margin-bottom:30px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero__trust{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--dim)}
.hero__trust span{display:inline-flex;align-items:center;gap:7px}
.hero__trust i{color:var(--cyan);font-size:12px}
.hero-visual{position:relative;padding:12px 0}
.hero-shot{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card)
}
.hero-shot__bg{width:100%;height:100%;object-fit:cover;border-radius:0;filter:saturate(.9)}
.hero-shot__bg-wrap{position:absolute;inset:0}
.hero-shot__bg-wrap::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.55),rgba(5,7,15,.88)),
             radial-gradient(circle at 70% 20%,rgba(47,107,255,.35),transparent 60%)
}
.hero-shot__main{position:relative;z-index:2;width:100%;height:auto;border-radius:var(--r-img);
  border:1px solid rgba(255,255,255,.12)}
.hero-shot__pad{padding:34px 34px 30px;position:relative;z-index:1}
.float-card{
  position:absolute;z-index:3;padding:14px 16px;border-radius:14px;min-width:158px;
  background:rgba(10,16,32,.92);border:1px solid var(--line-strong);
  box-shadow:0 22px 44px -24px rgba(0,0,0,.95),0 0 0 1px rgba(47,107,255,.16)
}
.float-card--a{left:-22px;bottom:56px}
.float-card--b{right:-18px;top:34px}
.float-card__k{font-size:12.5px;color:var(--dim)}
.float-card__v{font-size:19px;font-weight:700;color:var(--amber)}
.float-card__v--cyan{color:var(--cyan)}
.stars{color:var(--amber);font-size:12px;letter-spacing:2px}

/* ---------- 价值带 ---------- */
.value-band{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.value-item{
  display:flex;gap:14px;align-items:flex-start;padding:22px 20px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);transition:all var(--t)
}
.value-item:hover{border-color:rgba(34,224,200,.45);transform:translateY(-3px)}
.value-item__ico{
  width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;border-radius:12px;
  background:rgba(47,107,255,.14);border:1px solid rgba(47,107,255,.3);color:var(--cyan);font-size:17px
}
.value-item h3{font-size:16px;margin-bottom:6px}
.value-item p{font-size:14px;color:var(--muted);margin:0}

/* ---------- 轮播 ---------- */
.shot-carousel .carousel-inner{border-radius:var(--r-card);overflow:hidden}
.slide-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:16px;background:var(--panel);padding:16px;border-radius:var(--r-card)}
.slide-main{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.slide-main img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9;border-radius:0}
.slide-side{display:grid;grid-template-rows:1fr 1fr;gap:16px}
.slide-side figure{margin:0;position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.slide-side img{width:100%;height:100%;object-fit:cover;border-radius:0}
.slide-cap{
  position:absolute;left:14px;bottom:14px;right:14px;padding:10px 14px;border-radius:10px;
  background:rgba(5,7,15,.72);border:1px solid var(--line);font-size:13.5px;color:var(--muted);backdrop-filter:blur(8px)
}
.slide-cap strong{color:var(--text);font-weight:600;display:block;font-size:15px;margin-bottom:2px}
.shot-carousel .carousel-indicators{
  position:static;margin:26px 0 0;display:flex;justify-content:center;gap:10px
}
.shot-carousel .carousel-indicators [data-bs-target]{
  width:54px;height:4px;border:0;border-radius:999px;background:rgba(255,255,255,.16);opacity:1;margin:0;
  transition:all var(--t)
}
.shot-carousel .carousel-indicators .active{background:linear-gradient(90deg,var(--blue),var(--cyan));box-shadow:0 0 14px rgba(34,224,200,.6)}
.shot-carousel .carousel-control-prev,
.shot-carousel .carousel-control-next{
  width:48px;height:48px;top:38%;border-radius:50%;opacity:1;
  background:rgba(10,16,32,.82);border:1px solid var(--line-strong);
  backdrop-filter:blur(10px);transition:all var(--t)
}
.shot-carousel .carousel-control-prev{left:26px}
.shot-carousel .carousel-control-next{right:26px}
.shot-carousel .carousel-control-prev:hover,
.shot-carousel .carousel-control-next:hover{border-color:var(--cyan);box-shadow:0 0 20px rgba(34,224,200,.45)}
.shot-carousel .carousel-control-prev-icon,
.shot-carousel .carousel-control-next-icon{width:16px;height:16px;filter:invert(1) sepia(1) saturate(3) hue-rotate(120deg)}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.req-card{padding:26px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line)}
.req-card__head{display:flex;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px dashed rgba(255,255,255,.12);margin-bottom:6px}
.req-card__head i{font-size:22px;color:var(--cyan)}
.req-card__head h3{font-size:18px}
.req-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.055)}
.req-row:last-child{border-bottom:0}
.req-row__k{color:var(--dim);font-size:14px}
.req-row__v{font-size:14.5px;color:var(--text);display:flex;align-items:center;gap:8px}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-col{display:grid;gap:22px;align-content:start}
.review-col--up{margin-top:-26px}
.review-card{padding:24px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);transition:all var(--t)}
.review-card:hover{border-color:rgba(34,224,200,.4);transform:translateY(-3px)}
.review-card__top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;flex:0 0 44px;border-radius:50%;display:grid;place-items:center;
  font-weight:700;color:#04121C;background:linear-gradient(135deg,#FFB03A,#22E0C8)
}
.review-card__name{font-size:15px;font-weight:600}
.review-card__dev{font-size:12.5px;color:var(--dim)}
.review-card p{font-size:14.5px;color:var(--muted);margin:0 0 12px}
.review-card .stars{display:block;margin-bottom:8px}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:26px;align-items:start}
.news-lead{
  border-radius:var(--r-card);overflow:hidden;background:var(--glass);border:1px solid var(--line);
  transition:all var(--t)
}
.news-lead:hover{border-color:rgba(34,224,200,.5);transform:translateY(-3px)}
.news-lead__cover{position:relative;display:block}
.news-lead__cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;border-bottom:1px solid var(--line)}
.news-lead__cover .badge-cat{position:absolute;left:16px;top:16px}
.news-lead__body{padding:24px}
.news-lead__body h3{font-size:20px;margin-bottom:12px}
.news-lead__body h3 a:hover{color:var(--cyan)}
.news-lead__body p{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--dim);margin-top:16px}
.news-meta i{color:var(--cyan);margin-right:5px;font-size:11px}
.news-list{display:grid;gap:14px}
.news-item{
  display:grid;grid-template-columns:104px 1fr;gap:16px;align-items:center;padding:14px;
  border-radius:16px;background:var(--glass);border:1px solid var(--line);transition:all var(--t)
}
.news-item:hover{border-color:rgba(34,224,200,.5);transform:translateY(-2px)}
.news-item:hover h4{color:var(--cyan)}
.news-item img{width:104px;height:70px;object-fit:cover;border-radius:12px}
.news-item h4{font-size:15px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--t)}
.news-item .news-meta{margin-top:8px;gap:10px;font-size:12.5px}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 24px;border-radius:var(--r-card);background:var(--glass);border:1px dashed rgba(255,255,255,.16)
}
.empty-state i{font-size:28px;color:var(--cyan)}
.empty-state p{color:var(--muted);margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-wrap .accordion-item{
  background:var(--glass);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden
}
.faq-wrap .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;padding:20px 56px 20px 22px;
  box-shadow:none;border:0
}
.faq-wrap .accordion-button:not(.collapsed){color:var(--cyan);background:rgba(34,224,200,.05)}
.faq-wrap .accordion-button:focus{box-shadow:none;outline:2px solid rgba(34,224,200,.5);outline-offset:-4px}
.faq-wrap .accordion-button::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  background-image:none;width:auto;height:auto;font-size:13px;color:var(--cyan);
  position:absolute;right:22px;top:50%;transform:translateY(-50%);transition:transform var(--t)
}
.faq-wrap .accordion-button:not(.collapsed)::after{content:"\f068";transform:translateY(-50%) rotate(180deg)}
.faq-wrap .accordion-body{color:var(--muted);font-size:15px;padding:0 22px 22px;position:relative}
.faq-wrap .accordion-body::before{
  content:"";position:absolute;left:22px;top:2px;bottom:20px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--cyan),transparent);opacity:.65
}
.faq-wrap .accordion-body{padding-left:36px}

/* ---------- 下载条带 ---------- */
.dl-band{
  border-radius:24px;padding:34px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  background:var(--glass);border:1px solid rgba(34,224,200,.22);
  box-shadow:var(--shadow-card),0 0 60px -30px rgba(34,224,200,.5)
}
.dl-band__info{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-bottom:22px}
.dl-band__info div span{display:block;font-size:12.5px;color:var(--dim);margin-bottom:4px}
.dl-band__info div strong{font-size:19px;color:var(--amber);font-weight:700}
.dl-band__actions{display:flex;align-items:center;gap:22px}
.qr-box{
  width:132px;height:132px;border-radius:16px;background:#F4F7FF;display:grid;place-items:center;
  color:#04121C;font-size:12.5px;font-weight:600;text-align:center;line-height:1.5;padding:10px;
  box-shadow:0 14px 34px -18px rgba(0,0,0,.9)
}
.qr-box i{display:block;font-size:30px;margin-bottom:6px;color:#0A1020}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;border-top:1px solid rgba(255,255,255,.07);background:rgba(6,9,18,.7)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;padding:62px 0 40px}
.footer-brand p{font-size:14px;color:var(--muted);margin:14px 0 16px;max-width:280px}
.footer-contact{font-size:13.5px;color:var(--dim);display:grid;gap:7px}
.footer-contact i{color:var(--cyan);margin-right:7px;font-size:12px}
.footer-col h4{font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.footer-col a{display:block;font-size:14px;color:var(--muted);padding:6px 0}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:20px 0 30px;border-top:1px dashed rgba(255,255,255,.1);font-size:13px;color:var(--dim)
}
.to-top{
  width:42px;height:42px;display:grid;place-items:center;border-radius:50%;
  border:1px solid var(--line-strong);background:var(--glass);color:var(--cyan);cursor:pointer;transition:all var(--t)
}
.to-top:hover{box-shadow:0 0 22px rgba(34,224,200,.5);transform:translateY(-2px)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero__grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{max-width:640px;margin:0 auto;width:100%}
  .float-card--b{display:none}
  .news-grid{grid-template-columns:1fr}
}
@media (max-width:991.98px){
  :root{--sec:76px}
  .nav-side{display:none}
  .header-inner{grid-template-columns:auto 1fr auto;gap:10px}
  .brand{justify-self:center;font-size:16px}
  .brand__mark{width:30px;height:30px;flex-basis:30px;font-size:13px}
  .brand__tags{display:none}
  .menu-toggle{display:grid;justify-self:start}
  .header-cta{display:grid;justify-self:end}
  .value-band{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr 1fr}
  .review-col--up{margin-top:0}
  .req-grid{grid-template-columns:1fr}
  .slide-grid{grid-template-columns:1fr}
  .slide-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .dl-band{grid-template-columns:1fr}
  .dl-band__actions{flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .hero-shot__pad{padding:24px 22px}
  .float-card--a{left:-8px;bottom:22px}
}
@media (max-width:575.98px){
  :root{--sec:60px;--nav-h:64px}
  .container{padding-left:18px;padding-right:18px}
  .hero{padding:36px 0 62px;min-height:auto}
  .hero__actions .btn-rl{width:100%}
  .value-band{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .float-card{min-width:132px;padding:11px 13px}
  .float-card--a{left:0;bottom:-14px}
  .news-item{grid-template-columns:88px 1fr;gap:12px}
  .news-item img{width:88px;height:62px}
  .dl-band{padding:22px;border-radius:18px}
  .dl-band__info{grid-template-columns:1fr 1fr}
  .qr-box{width:112px;height:112px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:30px}
  .shot-carousel .carousel-control-prev,
  .shot-carousel .carousel-control-next{display:none}
  .slide-side{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg:#05070F;
  --panel:#0A1020;
  --elev:#101833;
  --blue:#2F6BFF;
  --cyan:#22E0C8;
  --amber:#FFB03A;
  --text:#EAF0FF;
  --text-2:#A9B6D3;
  --text-3:#6E7C9B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-badge:8px;
  --shadow:0 24px 48px -28px rgba(0,0,0,.85);
  --shadow-hover:0 24px 48px -28px rgba(0,0,0,.85),0 0 0 1px rgba(47,107,255,.25);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-y:112px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  background-image:
    radial-gradient(900px 520px at 82% -8%,rgba(47,107,255,.16),transparent 62%),
    radial-gradient(720px 460px at 6% 8%,rgba(34,224,200,.08),transparent 60%),
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--cyan)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800}
h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:15px;line-height:1.4;font-weight:600}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1.15em;padding-left:1.25em}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}
:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(34,224,200,.55);border-radius:8px}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
@media (min-width:1200px){.container{max-width:1200px}}
@media (min-width:1400px){.container{max-width:1280px}}
.section{padding:var(--sec-y) 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 p{color:var(--text-2);max-width:660px;margin:10px 0 0}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:24px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .glass{background:#0C1326}
}
.hairline{height:1px;border:0;background:linear-gradient(90deg,rgba(34,224,200,.55),rgba(47,107,255,.25),transparent)}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(6,9,20,.62);border-bottom:1px solid rgba(255,255,255,.05);backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.site-header.is-scrolled{background:rgba(4,7,15,.92);border-bottom-color:rgba(34,224,200,.22);box-shadow:0 18px 40px -30px rgba(0,0,0,.95)}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .site-header{background:#060A16}
  .site-header.is-scrolled{background:#05080F}
}
.nav-grid{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-grid{height:60px}
.nav-side{display:flex;align-items:center;gap:6px}
.nav-side--left{justify-self:start}
.nav-side--right{justify-self:end}
.nav-link-rl{position:relative;display:inline-flex;align-items:center;padding:9px 13px;border-radius:999px;font-size:15px;color:var(--text-2);white-space:nowrap;transition:color .22s var(--ease),background .22s var(--ease)}
.nav-link-rl::after{content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--blue));border-radius:2px;transition:left .24s var(--ease),right .24s var(--ease);box-shadow:0 0 12px rgba(34,224,200,.5)}
.nav-link-rl:hover,.nav-link-rl:focus-visible{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link-rl:hover::after,.nav-link-rl:focus-visible::after{left:13px;right:13px}
.nav-link-rl.active{color:var(--text);background:linear-gradient(180deg,rgba(34,224,200,.16),rgba(34,224,200,.06));border:1px solid rgba(34,224,200,.28)}
.nav-link-rl.active::after{display:none}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;padding:6px 10px;border-radius:14px}
.brand:hover{color:var(--text)}
.brand__mark{display:grid;place-items:center;width:38px;height:38px;font-weight:800;font-size:15px;letter-spacing:.06em;color:#04121A;background:linear-gradient(135deg,var(--blue),var(--cyan));clip-path:polygon(12% 0,100% 0,100% 88%,88% 100%,0 100%,0 12%);box-shadow:0 10px 26px -14px rgba(47,107,255,.9)}
.brand__text{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;white-space:nowrap;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease)}
.btn-primary{color:#03121B;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 10px 30px -10px rgba(47,107,255,.65),inset 0 1px 0 rgba(255,255,255,.4)}
.btn-primary:hover{color:#03121B;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 36px -10px rgba(47,107,255,.8),inset 0 1px 0 rgba(255,255,255,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 3px 12px rgba(0,0,0,.35)}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.04);border:1px solid var(--line-strong)}
.btn-ghost:hover{color:var(--text);border-color:rgba(34,224,200,.5);background:rgba(34,224,200,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 16px;font-size:14px}
.nav-cta{padding:10px 18px;font-size:14px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);background:rgba(255,255,255,.04);align-items:center;justify-content:center;font-size:16px}
@media (max-width:991px){
  .nav-grid{grid-template-columns:auto 1fr auto;height:64px}
  .nav-side{display:none}
  .brand{justify-self:start}
  .nav-toggle{display:inline-flex}
}
.offcanvas.rl-drawer{background:#070B17;color:var(--text);border-right:1px solid var(--line);width:min(86vw,340px)}
.rl-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.rl-drawer .offcanvas-body{padding:18px 20px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:14px 14px;border-radius:12px;color:var(--text-2);border:1px solid transparent;margin-bottom:8px}
.drawer-link:hover,.drawer-link.active{color:var(--text);background:rgba(34,224,200,.08);border-color:rgba(34,224,200,.28)}
.drawer-cta{margin-top:18px;width:100%}

/* ---------- breadcrumb / article hero ---------- */
.breadcrumb-bar{padding:26px 0 0;font-size:14px;color:var(--text-3)}
.breadcrumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;list-style:none;margin:0;padding:0}
.breadcrumb-bar li{display:flex;align-items:center;gap:10px;max-width:100%}
.breadcrumb-bar li+li::before{content:"";width:1px;height:12px;background:var(--line-strong)}
.breadcrumb-bar a{color:var(--text-2)}
.breadcrumb-bar .current{color:var(--text);max-width:min(52vw,520px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero{padding:22px 0 34px;position:relative}
.article-hero::before{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:linear-gradient(90deg,transparent,rgba(34,224,200,.35),transparent)}
.badge{display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:999px;font-size:13px;line-height:1;font-weight:600}
.badge-cat{color:var(--text);background:rgba(255,255,255,.06);border:1px solid var(--line-strong)}
.badge-state{color:var(--amber);background:rgba(255,176,58,.12);border:1px solid rgba(255,176,58,.3)}
.badge-info{color:var(--cyan);background:rgba(34,224,200,.07);border:1px solid rgba(34,224,200,.32)}
.article-hero h1{margin:18px 0 18px;max-width:18em}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;color:var(--text-3);font-size:14px}
.meta-row i{color:var(--cyan);margin-right:6px}
.article-hero .hairline{margin-top:26px}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;padding-bottom:20px}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,820px) 300px;justify-content:center}
}
.article-shell{border-radius:var(--r-card);padding:clamp(20px,3vw,40px)}
.article-body{font-size:16.5px;line-height:1.9;color:var(--text-2);max-width:100%;overflow-wrap:anywhere}
.article-body h2{position:relative;margin:2em 0 .8em;padding-left:16px;font-size:clamp(20px,2.2vw,26px);color:var(--text);line-height:1.4}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--cyan),var(--blue));box-shadow:0 0 14px rgba(34,224,200,.5)}
.article-body h3{margin:1.7em 0 .7em;font-size:19px;color:var(--text)}
.article-body h4{margin:1.4em 0 .6em;color:var(--text)}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(34,224,200,.35)}
.article-body strong{color:var(--text)}
.article-body ul,.article-body ol{padding-left:1.3em;margin:0 0 1.4em}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--cyan)}
.article-body blockquote{margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--amber);border-radius:0 12px 12px 0;background:rgba(255,176,58,.07);color:var(--text)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:1.6em auto;border-radius:var(--r-img);border:1px solid var(--line);height:auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--text-3)}
.article-body table{display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:1.6em 0;font-size:15px;border-radius:12px;border:1px solid var(--line)}
.article-body thead{background:rgba(47,107,255,.14)}
.article-body th,.article-body td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);color:var(--text-2)}
.article-body th{color:var(--text);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.028)}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;background:rgba(255,255,255,.07);padding:2px 7px;border-radius:6px;color:var(--cyan)}
.article-body pre{margin:1.6em 0;padding:18px 20px;border-radius:12px;background:#060B18;border:1px solid var(--line);overflow-x:auto}
.article-body pre code{background:none;padding:0;color:var(--text-2);white-space:pre}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}

/* ---------- side rail ---------- */
.rail{display:none}
@media (min-width:1200px){.rail{display:block}}
.rail-inner{position:sticky;top:96px;display:grid;gap:18px}
.rail-card{border-radius:var(--r-card);padding:20px}
.rail-card h4{margin-bottom:14px;color:var(--text);font-size:15px;letter-spacing:.04em}
.rail-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.rail-list a{color:var(--text-2);font-size:14px;display:block;padding-left:12px;border-left:2px solid rgba(255,255,255,.1);line-height:1.6}
.rail-list a:hover{color:var(--cyan);border-left-color:var(--cyan)}
.rail-meta{display:grid;gap:12px;font-size:14px;color:var(--text-3)}
.rail-meta div{display:flex;justify-content:space-between;gap:12px;padding-bottom:10px;border-bottom:1px dashed var(--line)}
.rail-meta div:last-child{border-bottom:0;padding-bottom:0}
.rail-meta strong{color:var(--text);font-weight:600}

/* ---------- footer of article ---------- */
.article-foot{margin-top:40px;display:grid;gap:26px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;font-size:13px;color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line)}
.tag:hover{color:var(--cyan);border-color:rgba(34,224,200,.4)}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding-top:22px;border-top:1px solid var(--line);color:var(--text-3);font-size:14px}
.share-row .btn{text-transform:none}
.related{margin-top:var(--sec-y)}
.related h2{margin-bottom:8px}
.related p{color:var(--text-2)}
.related-grid{display:grid;gap:22px;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:34px}
@media (max-width:991px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:639px){.related-grid{grid-template-columns:1fr}}
.rcard{border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.rcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(34,224,200,.42)}
.rcard__cover{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line)}
.rcard__cover img{width:100%;height:100%;object-fit:cover;border-radius:0}
.rcard__body{padding:18px 20px 20px}
.rcard__body h3{font-size:17px;line-height:1.5;margin-bottom:10px}
.rcard:hover h3{color:var(--cyan)}
.rcard__date{font-size:13px;color:var(--text-3)}
.empty-state{margin:0 auto;max-width:560px;border-radius:var(--r-card);padding:44px 30px;text-align:center}
.empty-state i{font-size:30px;color:var(--cyan);margin-bottom:16px}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-2)}
.empty-state .btn{margin-top:20px}

/* ---------- progress / to top ---------- */
.read-progress{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--cyan),var(--blue));z-index:1040;box-shadow:0 0 12px rgba(34,224,200,.6);transition:width .12s linear}
@media (prefers-reduced-motion:reduce){
  .read-progress{transition:none}
  *{animation:none!important;transition:none!important}
}

/* ---------- footer ---------- */
.site-footer{margin-top:var(--sec-y);border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,16,32,.9),rgba(5,7,15,.98))}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding:64px 0 40px}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:52px 0 32px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:16px;max-width:32em}
.footer-contact{display:grid;gap:10px;margin-top:18px;font-size:14px;color:var(--text-3)}
.footer-contact i{color:var(--cyan);margin-right:8px}
.footer-col h4{margin-bottom:16px;color:var(--text);font-size:15px}
.footer-col a{display:block;color:var(--text-2);font-size:14.5px;padding:6px 0}
.footer-col a:hover{color:var(--cyan);padding-left:4px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 0 30px;border-top:1px solid var(--line);color:var(--text-3);font-size:13.5px;flex-wrap:wrap}
.to-top{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;color:var(--text);background:rgba(255,255,255,.05);border:1px solid var(--line-strong);transition:box-shadow .22s var(--ease),transform .22s var(--ease),color .22s var(--ease)}
.to-top:hover{color:var(--cyan);transform:translateY(-3px);box-shadow:0 0 0 1px rgba(34,224,200,.45),0 14px 30px -16px rgba(34,224,200,.7)}

@media (max-width:767px){
  :root{--sec-y:64px}
  .container{padding:0 18px}
  .article-hero h1{font-size:clamp(26px,7vw,32px)}
  .breadcrumb-bar .current{max-width:64vw}
  .btn{width:100%}
  .meta-row{gap:8px 16px}
  .share-row .btn{width:auto}
}

/* roulang page: category1 */
:root{
  --bg:#0A0A0F;
  --bg-2:#0F1017;
  --panel:#12131C;
  --raised:#191B27;
  --line:rgba(236,230,218,.10);
  --line-strong:rgba(236,230,218,.20);
  --blue:#2F6BFF;
  --cyan:#22E0C8;
  --amber:#FFB03A;
  --ink:#EDEFF6;
  --ink-2:#A9B4CE;
  --ink-3:#6C768F;
  --danger:#FF6B6B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:6px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.85);
  --shadow-lift:0 26px 52px -26px rgba(0,0,0,.9), 0 0 0 1px rgba(34,224,200,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:112px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background-color:var(--bg);
  background-image:
    radial-gradient(880px 520px at 10% -12%, rgba(47,107,255,.16), transparent 66%),
    radial-gradient(720px 440px at 92% 4%, rgba(34,224,200,.09), transparent 68%),
    linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,fixed,fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
p{margin:0 0 1.15em;color:var(--ink-2);}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--ink);font-weight:700;letter-spacing:.01em;}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:800;}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;}
h3{font-size:19px;line-height:1.4;font-weight:600;}
h4{font-size:15px;line-height:1.4;font-weight:600;}
ul{margin:0 0 1.15em;padding-left:1.15em;color:var(--ink-2);}
li{margin-bottom:.55em;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container{max-width:1280px;}}
.section{padding:var(--sec) 0;}
.section--tight{padding:72px 0;}
.section-title{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:44px;}
.section-title h2{margin:0;}
.section-title .sub{color:var(--ink-3);font-size:14px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,transparent,var(--cyan));}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:linear-gradient(180deg,rgba(10,10,15,.86),rgba(10,10,15,.62));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,224,200,.55),rgba(47,107,255,.4),transparent);
  opacity:0;transition:opacity .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(8,8,12,.94);border-bottom-color:rgba(236,230,218,.14);}
.site-header.is-scrolled::after{opacity:1;}
.nav-shell{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
  min-height:72px;transition:min-height .24s var(--ease);
}
.site-header.is-scrolled .nav-shell{min-height:60px;}
.nav-side{display:flex;align-items:center;gap:26px;}
.nav-side--left{justify-self:start;}
.nav-side--right{justify-self:end;}
.nav-link-rl{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;font-weight:500;
}
.nav-link-rl::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  transform:translateX(-50%);background:linear-gradient(90deg,var(--blue),var(--cyan));
  box-shadow:0 0 10px rgba(34,224,200,.6);transition:width .24s var(--ease);
}
.nav-link-rl:hover,.nav-link-rl:focus-visible{color:var(--ink);}
.nav-link-rl:hover::after,.nav-link-rl:focus-visible::after{width:100%;}
.nav-link-rl.active{color:var(--ink);}
.nav-link-rl.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:3px;height:14px;border-radius:2px;background:var(--cyan);
  box-shadow:0 0 10px rgba(34,224,200,.8);
}
.nav-link-rl.active::after{width:100%;opacity:.55;}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;}
.brand__mark{
  width:38px;height:38px;display:grid;place-items:center;flex:0 0 auto;
  font-size:15px;font-weight:800;letter-spacing:.04em;color:#04121A;
  background:linear-gradient(135deg,var(--cyan),#7BE8FF);
  clip-path:polygon(0 8px,8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  box-shadow:0 8px 22px -10px rgba(34,224,200,.75);
}
.brand__text{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);}
.brand__sub{display:block;font-size:11px;letter-spacing:.22em;color:var(--ink-3);font-weight:500;}
.btn-rl{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:11px 22px;border-radius:999px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-rl:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(34,224,200,.5);}
.btn-primary-rl{
  color:#03121A;background:linear-gradient(135deg,var(--blue),var(--cyan));
  box-shadow:0 10px 30px -10px rgba(47,107,255,.65),inset 0 1px 0 rgba(255,255,255,.4);
}
.btn-primary-rl:hover{transform:translateY(-2px);box-shadow:0 14px 34px -8px rgba(47,107,255,.8),inset 0 1px 0 rgba(255,255,255,.5);color:#03121A;}
.btn-primary-rl:active{transform:translateY(0);box-shadow:inset 0 3px 10px rgba(0,0,0,.35);}
.btn-ghost-rl{
  color:var(--ink);background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border-color:var(--line-strong);backdrop-filter:blur(12px);
}
.btn-ghost-rl:hover{border-color:rgba(34,224,200,.6);color:var(--cyan);background:rgba(34,224,200,.08);transform:translateY(-2px);}
.btn-sm-rl{padding:8px 16px;font-size:14px;}
.nav-toggle{
  display:none;justify-self:start;width:42px;height:42px;border-radius:var(--r-btn);
  align-items:center;justify-content:center;color:var(--ink);
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
}
.nav-toggle:hover{color:var(--cyan);border-color:rgba(34,224,200,.5);}
.offcanvas-rl{background:#0B0C13;color:var(--ink);border-right:1px solid var(--line);width:320px;}
.offcanvas-rl .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-rl .offcanvas-body{padding:18px 20px 28px;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px 0;font-size:16px;color:var(--ink-2);border-bottom:1px dashed var(--line);
}
.drawer-link:hover,.drawer-link.active{color:var(--cyan);}
.drawer-link.active{padding-left:12px;border-left:3px solid var(--cyan);}
.btn-close-rl{filter:invert(1) grayscale(1);opacity:.7;}

/* ============ 玻璃面 ============ */
.glass{
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.07);
  border-radius:var(--r-card);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .glass{background:#12131C;}
  .site-header{background:rgba(10,10,15,.97);}
}

/* ============ Hero ============ */
.page-hero{position:relative;overflow:hidden;min-height:380px;display:flex;align-items:center;}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(10,10,15,.72),rgba(10,10,15,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  filter:saturate(.85);
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:24px 24px;
}
.page-hero__inner{position:relative;z-index:2;padding:76px 0 64px;}
.crumb{font-size:13px;color:var(--ink-3);display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:20px;}
.crumb a:hover{color:var(--cyan);}
.crumb span.sep{width:1px;height:12px;background:var(--line-strong);display:inline-block;}
.page-hero h1{margin-bottom:16px;}
.page-hero .lede{max-width:660px;font-size:17px;color:var(--ink-2);margin-bottom:26px;}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;padding:7px 14px;
  border-radius:999px;border:1px dashed var(--line-strong);color:var(--ink-2);
  background:rgba(255,255,255,.035);
}
.pill b{color:var(--amber);font-weight:600;}
.pill i{color:var(--cyan);}

/* ============ Z 字段落 ============ */
.zrow{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0;border-bottom:1px dashed var(--line);}
.zrow:last-child{border-bottom:0;}
.zrow__media{position:relative;}
.zrow__media img{width:100%;height:320px;object-fit:cover;border:1px solid var(--line-strong);box-shadow:var(--shadow-card);}
.zrow__media::before{
  content:"";position:absolute;left:-14px;top:-14px;width:74px;height:74px;
  border-left:2px solid rgba(34,224,200,.55);border-top:2px solid rgba(34,224,200,.55);
  border-top-left-radius:10px;
}
.zrow__media::after{
  content:"";position:absolute;right:-14px;bottom:-14px;width:74px;height:74px;
  border-right:2px solid rgba(255,176,58,.45);border-bottom:2px solid rgba(255,176,58,.45);
  border-bottom-right-radius:10px;
}
.zrow--flip .zrow__media{order:2;}
.zrow--flip .zrow__body{order:1;}
.znum{
  display:inline-grid;place-items:center;width:46px;height:46px;font-size:16px;font-weight:800;
  color:var(--amber);border:1px solid rgba(255,176,58,.42);background:rgba(255,176,58,.10);
  clip-path:polygon(0 9px,9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  margin-bottom:16px;font-variant-numeric:tabular-nums;
}
.zrow__body h2{margin-bottom:14px;}
.check-list{list-style:none;padding:0;margin:18px 0 0;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);}
.check-list i{color:var(--cyan);margin-top:5px;font-size:13px;}

/* ============ 数据条 ============ */
.stat-strip{
  margin-top:16px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.stat-card{
  padding:26px 24px;border-radius:var(--r-card);position:relative;overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.stat-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,224,200,.7),transparent);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);}
.stat-card b{display:block;font-size:38px;line-height:1.1;color:var(--amber);font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.stat-card b span{font-size:16px;color:var(--ink-2);margin-left:4px;font-weight:600;}
.stat-card p{margin:8px 0 0;font-size:14px;color:var(--ink-3);}

/* ============ 节奏带 ============ */
.rhythm{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
}
.rhythm__item{padding:30px 28px;border-right:1px dashed var(--line);}
.rhythm__item:last-child{border-right:0;}
.rhythm__item .k{font-size:12px;letter-spacing:.18em;color:var(--cyan);font-weight:600;display:block;margin-bottom:12px;}
.rhythm__item h3{margin-bottom:8px;font-size:18px;}
.rhythm__item p{font-size:14px;margin-bottom:14px;color:var(--ink-2);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--cyan);}
.link-arrow i{transition:transform .24s var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-rl .accordion-item{
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.accordion-rl .accordion-item:hover{border-color:rgba(34,224,200,.35);}
.accordion-rl .accordion-button{
  background:transparent;color:var(--ink);font-size:16px;font-weight:600;
  padding:18px 56px 18px 22px;box-shadow:none;position:relative;
}
.accordion-rl .accordion-button:not(.collapsed){
  color:var(--cyan);background:rgba(34,224,200,.06);box-shadow:inset 3px 0 0 var(--cyan);
}
.accordion-rl .accordion-button:focus{box-shadow:0 0 0 2px rgba(34,224,200,.35);}
.accordion-rl .accordion-button::after{
  content:"+";background-image:none;transform:none;
  position:absolute;right:18px;top:50%;margin-top:-14px;
  width:28px;height:28px;line-height:24px;text-align:center;font-size:17px;
  color:var(--cyan);border:1px solid var(--line-strong);border-radius:8px;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.accordion-rl .accordion-button:not(.collapsed)::after{content:"−";background:rgba(34,224,200,.12);border-color:rgba(34,224,200,.4);}
.accordion-rl .accordion-body{padding:4px 22px 22px;color:var(--ink-2);font-size:15px;}
.accordion-rl .accordion-body p:last-child{margin-bottom:0;}

/* ============ CTA ============ */
.cta-band{
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
  padding:38px 40px;border-radius:22px;
  background:linear-gradient(135deg,rgba(47,107,255,.16),rgba(34,224,200,.08));
  border:1px solid var(--line-strong);box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,224,200,.22),transparent 68%);
}
.cta-band h2{margin-bottom:10px;}
.cta-band p{margin:0;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-self:end;position:relative;z-index:2;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:24px;padding:62px 0 26px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(0,0,0,.25));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .brand{justify-self:start;margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--ink-3);max-width:330px;}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--ink-2);}
.footer-contact i{color:var(--cyan);margin-right:8px;}
.footer-col h4{font-size:14px;letter-spacing:.1em;color:var(--ink-3);margin-bottom:16px;text-transform:uppercase;}
.footer-col a{display:block;font-size:14px;color:var(--ink-2);padding:6px 0;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:42px;padding-top:20px;border-top:1px dashed var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
}
.to-top{
  width:42px;height:42px;border-radius:50%;color:var(--cyan);
  background:rgba(34,224,200,.08);border:1px solid rgba(34,224,200,.35);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.to-top:hover{transform:translateY(-3px);box-shadow:0 0 18px rgba(34,224,200,.5);}
.to-top:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(34,224,200,.55);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sec:88px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
}
@media (max-width:991px){
  .nav-side{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{grid-template-columns:auto 1fr auto;min-height:64px;}
  .brand{justify-self:center;}
  .nav-quick{justify-self:end;display:inline-flex;}
  .zrow{grid-template-columns:1fr;gap:28px;padding:34px 0;}
  .zrow--flip .zrow__media{order:1;}
  .zrow--flip .zrow__body{order:2;}
  .zrow__media img{height:260px;}
  .zrow__media::before,.zrow__media::after{display:none;}
  .stat-strip{grid-template-columns:1fr 1fr;}
  .rhythm{grid-template-columns:1fr;}
  .rhythm__item{border-right:0;border-bottom:1px dashed var(--line);}
  .rhythm__item:last-child{border-bottom:0;}
  .cta-band{grid-template-columns:1fr;padding:30px 26px;}
  .cta-actions{justify-self:start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .page-hero__inner{padding:60px 0 52px;}
}
@media (max-width:575px){
  :root{--sec:60px;}
  .container{padding-left:18px;padding-right:18px;}
  .stat-strip{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .nav-shell{gap:8px;}
  .brand__text{font-size:16px;}
  .brand__mark{width:34px;height:34px;font-size:14px;}
  .btn-rl{width:100%;}
  .cta-actions{width:100%;}
  .page-hero{min-height:320px;}
  .zrow__media img{height:210px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg:#05070F;
  --panel:#0A1020;
  --panel-2:#101833;
  --ink:#EAF0FF;
  --ink-2:#A9B6D3;
  --ink-3:#6E7C9B;
  --blue:#2F6BFF;
  --cyan:#22E0C8;
  --amber:#FFB03A;
  --danger:#FF6B6B;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --glass:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-badge:8px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.85);
  --shadow-lift:0 24px 48px -28px rgba(0,0,0,.85),0 0 0 1px rgba(47,107,255,.25);
  --nav-h:72px;
  --sec-y:104px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:240ms var(--ease);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-scrolled{--nav-h:60px}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color var(--t)}
a:hover{color:var(--cyan)}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:.01em}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800}
h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:16px;line-height:1.4;font-weight:600}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid rgba(34,224,200,.6);outline-offset:2px}
::selection{background:rgba(34,224,200,.28)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1280px}}

.tnum{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 通用玻璃面 ---------- */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.07);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .glass{background:#0C1326;border-color:rgba(255,255,255,.12)}
}

/* 网格底纹 */
.grid-bg{position:relative;overflow:hidden}
.grid-bg::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 35%,transparent 78%);
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 35%,transparent 78%);
}

/* 场馆灯带 */
.light-strip{
  height:1px;border:0;margin:0;
  background:linear-gradient(90deg,transparent,rgba(34,224,200,.55),rgba(47,107,255,.35),transparent);
}

/* ---------- 按钮 ---------- */
.btn-rl{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
}
.btn-rl--primary{
  color:#04101F;
  background:linear-gradient(135deg,#2F6BFF,#22E0C8);
  box-shadow:0 10px 30px -10px rgba(47,107,255,.65),inset 0 1px 0 rgba(255,255,255,.45);
}
.btn-rl--primary:hover{
  color:#04101F;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 16px 38px -10px rgba(47,107,255,.8),inset 0 1px 0 rgba(255,255,255,.5);
}
.btn-rl--primary:active{transform:translateY(0);box-shadow:inset 0 3px 12px rgba(0,0,0,.35)}
.btn-rl--ghost{
  color:var(--ink);
  background:rgba(255,255,255,.03);
  border-color:var(--line-2);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.btn-rl--ghost:hover{
  color:var(--cyan);
  border-color:rgba(34,224,200,.55);
  background:rgba(34,224,200,.07);
  transform:translateY(-2px);
}
.btn-rl--sm{padding:9px 16px;font-size:14px}
.btn-rl--block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--cyan);font-size:14px;font-weight:600;
}
.btn-text i{transition:transform var(--t)}
.btn-text:hover i{transform:translateX(4px)}

/* ---------- 徽章 ---------- */
.badge-rl{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-badge);
  font-size:13px;line-height:1.5;font-weight:600;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  white-space:nowrap;
}
.badge-info{color:var(--cyan);border:1px solid rgba(34,224,200,.45);background:rgba(34,224,200,.06)}
.badge-amber{color:var(--amber);background:rgba(255,176,58,.12);border:1px solid rgba(255,176,58,.28)}
.badge-neutral{color:var(--ink-2);border:1px solid var(--line-2);background:rgba(255,255,255,.04)}
.badge-cut{
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  height:var(--nav-h);
  display:flex;align-items:center;
  background:rgba(5,7,15,.62);
  border-bottom:1px solid transparent;
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  transition:height var(--t),background var(--t),border-color var(--t);
}
.site-header.is-scrolled{
  background:rgba(5,7,15,.9);
  border-bottom-color:rgba(34,224,200,.3);
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  backdrop-filter:blur(20px) saturate(150%);
  box-shadow:0 1px 0 rgba(34,224,200,.18);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .site-header{background:#070B16}
  .site-header.is-scrolled{background:#070B16}
}
.site-header .container{height:100%}
.nav-grid{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;
  height:100%;
}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-side--left{justify-content:flex-start}
.nav-side--right{justify-content:flex-end}
.nav-link-rl{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 2px;white-space:nowrap;
}
.nav-link-rl::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:linear-gradient(90deg,#2F6BFF,#22E0C8);
  border-radius:2px;box-shadow:0 0 10px rgba(34,224,200,.7);
  transition:left var(--t),right var(--t);
}
.nav-link-rl:hover{color:var(--ink)}
.nav-link-rl:hover::after,.nav-link-rl:focus-visible::after{left:0;right:0}
.nav-link-rl.active{color:var(--ink);font-weight:600}
.nav-link-rl.active::after{left:0;right:0}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center}
.brand__mark{
  width:36px;height:36px;flex:0 0 36px;
  display:grid;place-items:center;
  font-size:14px;font-weight:800;letter-spacing:.02em;color:#04101F;
  background:linear-gradient(135deg,#2F6BFF,#22E0C8);
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
  box-shadow:0 8px 22px -10px rgba(47,107,255,.8);
}
.brand__text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.brand__sub{display:block;font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.06em}
.nav-cta{margin-left:4px}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border:1px solid var(--line-2);border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);color:var(--ink);font-size:17px;cursor:pointer;
  transition:border-color var(--t),color var(--t);
}
.nav-toggle:hover{border-color:rgba(34,224,200,.5);color:var(--cyan)}

/* 抽屉 */
.drawer{background:#080D1C;border-right:1px solid var(--line);color:var(--ink);width:300px}
.offcanvas.offcanvas-start.drawer{background:#080D1C}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer__body{padding:16px 20px 24px;display:flex;flex-direction:column;gap:6px}
.drawer__link{
  padding:13px 14px;border-radius:var(--r-btn);color:var(--ink-2);font-size:15px;
  border:1px solid transparent;transition:var(--t);
}
.drawer__link:hover{background:rgba(255,255,255,.04);color:var(--ink);border-color:var(--line)}
.drawer__link.active{color:var(--cyan);background:rgba(34,224,200,.08);border-color:rgba(34,224,200,.32)}
.drawer .btn-rl{margin-top:12px}
.btn-close-rl{
  width:36px;height:36px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--line-2);background:transparent;color:var(--ink-2);cursor:pointer;
}
.btn-close-rl:hover{color:var(--cyan);border-color:rgba(34,224,200,.5)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  min-height:360px;
  display:flex;align-items:center;
  padding:64px 0 58px;
  border-bottom:1px solid var(--line);
  background:#070B16;
  overflow:hidden;
}
.page-hero__bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.34;filter:saturate(.9);
}
.page-hero__veil{
  position:absolute;inset:0;
  background:
    radial-gradient(90% 120% at 12% 10%,rgba(47,107,255,.28),transparent 60%),
    radial-gradient(70% 100% at 88% 100%,rgba(34,224,200,.18),transparent 62%),
    linear-gradient(180deg,rgba(5,7,15,.72),rgba(5,7,15,.94));
}
.page-hero .container{position:relative;z-index:2}
.crumbs{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:14px;color:var(--ink-3);margin-bottom:20px;
}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--cyan)}
.crumbs i{font-style:normal;width:1px;height:12px;background:var(--line-2);display:inline-block}
.crumbs .now{color:var(--ink-2)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.page-hero h1{max-width:900px}
.hero-sub{
  margin-top:18px;max-width:660px;
  font-size:17px;line-height:1.7;color:var(--ink-2);
}

/* ---------- 粘性子导航 ---------- */
.subnav-wrap{
  position:sticky;top:var(--nav-h);z-index:1020;
  background:rgba(6,9,20,.92);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  transition:top var(--t),background var(--t);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .subnav-wrap{background:#080D1C}
}
.subnav{
  display:flex;gap:10px;overflow-x:auto;padding:12px 0;
  scrollbar-width:none;
}
.subnav::-webkit-scrollbar{display:none}
.subnav-link{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--ink-2);
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:var(--t);white-space:nowrap;
}
.subnav-link:hover{color:var(--ink);border-color:var(--line-2);background:rgba(255,255,255,.05)}
.subnav-link.is-active{
  color:#04101F;border-color:transparent;
  background:linear-gradient(135deg,#2F6BFF,#22E0C8);
  box-shadow:0 8px 22px -12px rgba(47,107,255,.9);
}

/* ---------- 板块 ---------- */
.sec{padding:var(--sec-y) 0;position:relative}
.sec--tight{padding:72px 0}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:14px;
}
.sec-kicker::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,#22E0C8,transparent)}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:16px}
.sec-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;flex-wrap:wrap;
}

/* ---------- 下载卡 ---------- */
.dl-grid{
  display:grid;gap:24px;
  grid-template-columns:1.35fr 1fr;
  align-items:start;
}
.dl-card{
  position:relative;
  padding:28px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:box-shadow var(--t),border-color var(--t),transform var(--t);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .dl-card{background:#0C1326}
}
.dl-card::before{
  content:"";position:absolute;inset:8px;border-radius:calc(var(--r-card) - 6px);
  border:1px dashed rgba(255,255,255,.07);pointer-events:none;
}
.dl-card:hover{border-color:rgba(34,224,200,.35);box-shadow:var(--shadow-lift);transform:translateY(-3px)}
.dl-card__top{display:flex;gap:22px;align-items:flex-start}
.dl-card__cover{
  width:180px;flex:0 0 180px;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line-2);
}
.dl-card h3{margin-bottom:10px}
.dl-card__desc{color:var(--ink-2);font-size:15px}
.dl-files{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.dl-file{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  padding:14px 16px;border-radius:14px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  transition:border-color var(--t),background var(--t);
}
.dl-file:hover{border-color:rgba(34,224,200,.4);background:rgba(34,224,200,.05)}
.dl-file__icon{
  width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;
  border-radius:10px;font-size:16px;color:var(--cyan);
  background:rgba(34,224,200,.1);border:1px solid rgba(34,224,200,.3);
}
.dl-file__body{flex:1 1 180px;min-width:0}
.dl-file__title{font-size:15px;font-weight:600;color:var(--ink)}
.dl-file__meta{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.dl-note{
  margin-top:20px;font-size:13px;color:var(--ink-3);
  padding-top:16px;border-top:1px dashed var(--line-2);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.dl-aside{
  padding:26px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(47,107,255,.14),rgba(34,224,200,.05));
  border:1px solid rgba(47,107,255,.3);
}
.dl-aside h3{font-size:18px;margin-bottom:12px}
.dl-aside p{color:var(--ink-2);font-size:15px}
.dl-aside .btn-rl{margin-top:18px}
.qr-box{
  width:180px;height:180px;margin:22px auto 0;
  background:#fff;border-radius:14px;
  display:grid;place-items:center;color:#0A1020;
  box-shadow:0 24px 48px -28px rgba(0,0,0,.9);
}
.qr-box i{font-size:64px;opacity:.85}
.qr-cap{text-align:center;font-size:13px;color:var(--ink-3);margin-top:12px}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.spec-card{
  padding:26px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color var(--t);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .spec-card{background:#0C1326}
}
.spec-card:hover{border-color:rgba(34,224,200,.3)}
.spec-card__head{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding-bottom:16px;margin-bottom:6px;border-bottom:1px solid var(--line);
}
.spec-list li{
  display:grid;grid-template-columns:110px 1fr auto;
  gap:14px;align-items:center;
  padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.07);
}
.spec-list li:last-child{border-bottom:0}
.spec-list .k{font-size:14px;color:var(--ink-3)}
.spec-list .v{font-size:15px;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.mobile-spec{
  margin-top:24px;padding:22px 26px;border-radius:var(--r-card);
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  background:rgba(255,176,58,.06);border:1px solid rgba(255,176,58,.24);
}
.mobile-spec h4{color:var(--amber);font-size:15px;letter-spacing:.04em}
.mobile-spec ul{display:flex;gap:28px;flex-wrap:wrap}
.mobile-spec li{font-size:14px;color:var(--ink-2);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.mobile-spec li b{color:var(--ink);font-weight:600}

/* ---------- 安装步骤时间线 ---------- */
.steps{position:relative;max-width:860px;margin:0 auto;padding-left:46px}
.steps::before{
  content:"";position:absolute;left:13px;top:14px;bottom:26px;width:1px;
  background:linear-gradient(180deg,rgba(34,224,200,.7),rgba(47,107,255,.35),transparent);
}
.step{position:relative;padding:0 0 34px}
.step:last-child{padding-bottom:0}
.step__dot{
  position:absolute;left:-46px;top:4px;width:27px;height:27px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;font-weight:800;color:#04101F;
  background:linear-gradient(135deg,#2F6BFF,#22E0C8);
  box-shadow:0 0 0 6px rgba(34,224,200,.08),0 0 22px rgba(34,224,200,.5);
}
.step__card{
  padding:20px 24px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line);
  transition:border-color var(--t),transform var(--t);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .step__card{background:#0C1326}
}
.step__card:hover{border-color:rgba(34,224,200,.34);transform:translateX(4px)}
.step__card h3{font-size:17px;margin-bottom:8px}
.step__card p{color:var(--ink-2);font-size:15px;margin:0}

/* ---------- 版本记录 ---------- */
.log-list{display:flex;flex-direction:column;gap:16px}
.log-item{
  display:grid;grid-template-columns:170px 1fr;gap:24px;
  padding:22px 26px;border-radius:var(--r-card);
  background:rgba(255,255,255,.025);border:1px solid var(--line);
  transition:border-color var(--t),background var(--t);
}
.log-item:hover{border-color:rgba(47,107,255,.35);background:rgba(47,107,255,.06)}
.log-ver{
  display:flex;flex-direction:column;gap:8px;align-items:flex-start;
}
.log-ver strong{
  font-size:19px;font-weight:800;color:var(--amber);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.log-date{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.log-body li{
  position:relative;padding-left:18px;font-size:15px;color:var(--ink-2);
  margin-bottom:8px;
}
.log-body li:last-child{margin-bottom:0}
.log-body li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px rgba(34,224,200,.7);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion-rl .accordion-item{
  background:transparent;border:0;margin-bottom:14px;border-radius:14px;overflow:hidden;
}
.accordion-rl .accordion-button{
  position:relative;
  background:var(--glass);color:var(--ink);
  border:1px solid var(--line);border-radius:14px !important;
  font-size:16px;font-weight:600;padding:20px 56px 20px 22px;
  box-shadow:none;transition:var(--t);
}
.accordion-rl .accordion-button::after{display:none}
.accordion-rl .accordion-button::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--cyan);line-height:1;
}
.accordion-rl .accordion-button:not(.collapsed){
  color:var(--cyan);
  border-color:rgba(34,224,200,.4);
  box-shadow:inset 3px 0 0 var(--cyan),0 0 26px -14px rgba(34,224,200,.9);
  border-radius:14px !important;
}
.accordion-rl .accordion-button:not(.collapsed)::before{content:"–"}
.accordion-rl .accordion-button:focus{box-shadow:none;border-color:rgba(34,224,200,.55)}
.accordion-rl .accordion-button:not(.collapsed):focus{
  box-shadow:inset 3px 0 0 var(--cyan),0 0 26px -14px rgba(34,224,200,.9);
}
.accordion-rl .accordion-body{
  background:rgba(255,255,255,.022);
  border:1px solid var(--line);border-top:0;
  border-radius:0 0 14px 14px;
  color:var(--ink-2);font-size:15px;padding:18px 22px 22px;
}

/* ---------- CTA 条带 ---------- */
.cta-band{padding:0 0 var(--sec-y)}
.cta-inner{
  position:relative;overflow:hidden;
  padding:40px;
  border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(47,107,255,.2),rgba(34,224,200,.09));
  border:1px solid rgba(47,107,255,.32);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  display:grid;grid-template-columns:1fr auto;gap:34px;align-items:center;
}
.cta-inner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:radial-gradient(90% 120% at 20% 0%,#000,transparent 75%);
  mask-image:radial-gradient(90% 120% at 20% 0%,#000,transparent 75%);
}
.cta-left{position:relative;z-index:2}
.cta-left h2{font-size:clamp(21px,2.3vw,28px)}
.cta-left p{color:var(--ink-2);margin-top:12px;max-width:520px}
.cta-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.cta-right{
  position:relative;z-index:2;
  display:flex;align-items:center;gap:28px;flex-wrap:wrap;
}
.cta-qr{width:132px;height:132px;background:#fff;border-radius:14px;display:grid;place-items:center;color:#0A1020}
.cta-qr i{font-size:52px;opacity:.85}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:#070B16;
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand p{color:var(--ink-3);font-size:14px;margin-top:16px;max-width:320px}
.footer-contact{display:flex;flex-direction:column;gap:8px;margin-top:18px;font-size:14px;color:var(--ink-2)}
.footer-contact i{color:var(--cyan);margin-right:8px}
.footer-col h4{font-size:14px;letter-spacing:.08em;color:var(--ink-3);margin-bottom:16px;font-weight:700}
.footer-col a{display:block;font-size:14px;color:var(--ink-2);padding:6px 0}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.to-top{
  width:42px;height:42px;border-radius:50%;display:grid;place-items:center;cursor:pointer;
  color:#04101F;border:0;
  background:linear-gradient(135deg,#2F6BFF,#22E0C8);
  box-shadow:0 10px 26px -12px rgba(47,107,255,.9);
  transition:transform var(--t),filter var(--t);
}
.to-top:hover{transform:translateY(-3px);filter:brightness(1.08)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-y:88px}
  .dl-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:991px){
  :root{--sec-y:72px}
  .nav-side{display:none}
  .nav-toggle{display:inline-flex;justify-self:start}
  .nav-grid{grid-template-columns:auto 1fr auto;gap:12px}
  .brand{justify-self:center}
  .nav-grid::after{content:"";width:42px}
  .brand__text{font-size:17px}
  .spec-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:26px}
  .log-item{grid-template-columns:1fr;gap:14px}
  .log-ver{flex-direction:row;align-items:baseline;gap:14px;flex-wrap:wrap}
  .page-hero{min-height:320px;padding:52px 0 44px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .dl-card{padding:22px}
  .dl-card__top{flex-direction:column}
  .dl-card__cover{width:100%;flex:1 1 auto;aspect-ratio:16/9}
  .dl-file{padding:12px 14px;gap:12px}
  .dl-file__body{flex:1 1 100%}
  .spec-list li{grid-template-columns:1fr;gap:6px;align-items:start}
  .spec-list .v{margin-bottom:4px}
  .mobile-spec{flex-direction:column;align-items:flex-start;gap:14px}
  .mobile-spec ul{flex-direction:column;gap:10px}
  .steps{padding-left:38px}
  .step__dot{left:-38px;width:24px;height:24px;font-size:11px}
  .cta-inner{padding:28px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .btn-rl{width:100%}
  .nav-cta{width:auto}
}
@media (max-width:575px){
  :root{--sec-y:56px}
  body{font-size:15px}
  .hero-sub{font-size:16px}
  .subnav-link{padding:8px 15px;font-size:13px}
  .dl-aside,.spec-card{padding:20px}
  .cta-right{flex-direction:column;align-items:stretch;gap:20px}
  .cta-qr{width:100%;height:150px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .to-top{align-self:flex-end}
  .accordion-rl .accordion-button{font-size:15px;padding:17px 48px 17px 18px}
}

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

/* roulang page: category3 */
:root{
  --bg:#05070F;
  --panel:#0A1020;
  --panel-2:#101833;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --brand:#2F6BFF;
  --mint:#22E0C8;
  --amber:#FFB03A;
  --t1:#EAF0FF;
  --t2:#A9B6D3;
  --t3:#6E7C9B;
  --danger:#FF6B6B;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-badge:999px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.85);
  --shadow-hover:0 30px 56px -30px rgba(0,0,0,.9), 0 0 0 1px rgba(47,107,255,.25);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;
  --sec-y:104px;
  --glass:linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:radial-gradient(80% 60% at 50% 0%, #000 10%, transparent 85%);
  mask-image:radial-gradient(80% 60% at 50% 0%, #000 10%, transparent 85%);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t1);}
p{margin:0 0 1.15em;color:var(--t2);}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(34,224,200,.55);border-radius:6px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.container{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:24px;
  position:relative;
  z-index:1;
}
.sec{padding-block:var(--sec-y);position:relative;z-index:1;}
.sec--tight{padding-block:72px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(5,7,15,.62);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),min-height var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(5,7,15,.9);
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  backdrop-filter:blur(20px) saturate(150%);
  border-bottom-color:rgba(34,224,200,.22);
  box-shadow:0 1px 0 0 rgba(34,224,200,.12);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:18px;
  min-height:72px;
  transition:min-height var(--dur) var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:60px;}

.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;}
.brand__mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  font-weight:800;
  font-size:15px;
  letter-spacing:.04em;
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--mint));
  border:1px solid rgba(255,255,255,.22);
  border-radius:10px;
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
  box-shadow:0 8px 24px -12px rgba(47,107,255,.75);
}
.brand__text{font-size:18px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}

.nav-side{display:flex;align-items:center;gap:4px;}
.nav-side--left{justify-content:flex-start;}
.nav-side--right{justify-content:flex-end;}
.nav-link-rl{
  position:relative;
  display:inline-block;
  padding:9px 12px;
  font-size:15px;
  color:var(--t2);
  white-space:nowrap;
}
.nav-link-rl::after{
  content:"";
  position:absolute;
  left:50%;right:50%;
  bottom:4px;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--mint),transparent);
  box-shadow:0 0 10px rgba(34,224,200,.7);
  transition:left var(--dur) var(--ease),right var(--dur) var(--ease);
}
.nav-link-rl:hover,.nav-link-rl:focus{color:var(--t1);}
.nav-link-rl:hover::after,.nav-link-rl:focus::after{left:12px;right:12px;}
.nav-link-rl.active{color:var(--t1);}
.nav-link-rl.active::before{
  content:"";
  position:absolute;
  left:2px;
  top:50%;
  transform:translateY(-50%);
  width:3px;height:16px;
  border-radius:2px;
  background:var(--mint);
  box-shadow:0 0 12px rgba(34,224,200,.85);
}
.nav-link-rl.active::after{left:12px;right:12px;}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;height:42px;
  border-radius:var(--r-btn);
  border:1px solid var(--line-2);
  background:var(--glass);
  color:var(--t1);
  cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(34,224,200,.5);color:var(--mint);}

/* ---------- 按钮 ---------- */
.btn-rl{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-rl--primary{
  color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--mint));
  box-shadow:0 10px 30px -10px rgba(47,107,255,.65), inset 0 1px 0 rgba(255,255,255,.45);
}
.btn-rl--primary:hover{
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 16px 38px -12px rgba(47,107,255,.8), inset 0 1px 0 rgba(255,255,255,.5);
}
.btn-rl--primary:active{transform:translateY(0);box-shadow:inset 0 3px 10px rgba(0,0,0,.35);}
.btn-rl--ghost{
  color:var(--t1);
  background:var(--glass);
  border-color:var(--line-2);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-rl--ghost:hover{
  transform:translateY(-2px);
  border-color:rgba(34,224,200,.55);
  background:rgba(34,224,200,.08);
  color:#EAF0FF;
}
.btn-rl--sm{padding:9px 18px;font-size:14px;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--mint);
}
.link-arrow i{transition:transform var(--dur) var(--ease);}
.link-arrow:hover i,.link-arrow:focus i{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge-rl{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  font-size:13px;
  line-height:1.5;
  border-radius:var(--r-badge);
  border:1px solid var(--line-2);
  background:var(--glass);
  color:var(--t2);
  white-space:nowrap;
}
.badge-rl--info{border-color:rgba(34,224,200,.45);color:var(--mint);background:rgba(34,224,200,.07);}
.badge-rl--state{border-color:rgba(255,176,58,.35);background:rgba(255,176,58,.12);color:var(--amber);}
.badge-rl--cat{background:rgba(255,255,255,.06);color:var(--t2);}
.badge-rl .num{color:var(--amber);font-weight:700;}

/* ---------- Hero ---------- */
.hero-band{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-band__bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  filter:saturate(.85);
}
.hero-band__mask{
  position:absolute;
  inset:0;
  background:
    radial-gradient(70% 90% at 18% 20%, rgba(47,107,255,.28), transparent 62%),
    radial-gradient(60% 80% at 88% 78%, rgba(255,176,58,.16), transparent 65%),
    linear-gradient(180deg, rgba(5,7,15,.82), rgba(5,7,15,.94));
}
.hero-band__grid{
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:24px 24px;
}
.hero-band__inner{
  position:relative;
  z-index:2;
  min-height:380px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding-block:64px;
  max-width:820px;
}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:var(--t3);
  margin-bottom:20px;
}
.crumb a:hover{color:var(--mint);}
.crumb i{font-size:10px;opacity:.6;}
.hero-band h1{
  font-size:clamp(30px,4.2vw,48px);
  line-height:1.2;
  font-weight:800;
  margin-bottom:16px;
}
.hero-band h1 em{
  font-style:normal;
  background:linear-gradient(135deg,var(--mint),var(--brand));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-band__sub{font-size:17px;color:var(--t2);max-width:640px;}
.hero-band__tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}

/* ---------- 通用排版 ---------- */
.sec-head{margin-bottom:44px;max-width:720px;}
.sec-head--row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
  flex-wrap:wrap;
}
.sec-head h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.3;
  font-weight:700;
  margin-bottom:12px;
}
.sec-head .kicker{
  display:inline-block;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--mint);
  margin-bottom:12px;
}
.sec-head p{font-size:16px;color:var(--t2);}
.rule-amber{
  height:1px;
  background:linear-gradient(90deg,rgba(255,176,58,.55),rgba(255,176,58,0) 70%);
  margin-block:56px;
}

/* ---------- 指标带 ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
  margin-top:-42px;
  position:relative;
  z-index:3;
}
.metric-card{
  padding:24px 26px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(16,24,51,.94), rgba(10,16,32,.9));
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.metric-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,224,200,.6),transparent);
}
.metric-card__num{
  font-size:34px;
  font-weight:800;
  color:var(--amber);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.metric-card__label{font-size:14px;color:var(--t3);margin-top:8px;}
.metric-card__desc{font-size:14px;color:var(--t2);margin-top:12px;line-height:1.65;}

/* ---------- 非对称功能卡组 ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:1.32fr 1fr;
  grid-template-rows:auto auto auto;
  gap:22px;
}
.f-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.f-card:hover{
  transform:translateY(-4px);
  border-color:rgba(34,224,200,.45);
  box-shadow:var(--shadow-hover);
}
.f-card__shot{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.f-card__shot img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 260ms var(--ease);
}
.f-card:hover .f-card__shot img{transform:translateY(-2px);}
.f-card__badge{
  position:absolute;
  left:14px;top:14px;
  padding:5px 12px;
  font-size:12px;
  border-radius:var(--r-badge);
  background:rgba(5,7,15,.78);
  border:1px solid rgba(34,224,200,.4);
  color:var(--mint);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.f-card__body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.f-card__body h3{font-size:20px;line-height:1.4;}
.f-card__body p{font-size:15px;color:var(--t2);}
.f-card--lg{grid-row:span 2;}
.f-card--lg .f-card__shot{aspect-ratio:16/10;}
.f-card--lg .f-card__body h3{font-size:23px;}
.f-card--sm .f-card__shot{aspect-ratio:16/9;}
.f-card--wide{grid-column:1 / -1;flex-direction:row;align-items:stretch;}
.f-card--wide .f-card__shot{width:44%;border-bottom:none;border-right:1px solid var(--line);aspect-ratio:16/10;}
.f-card--wide .f-card__body{width:56%;justify-content:center;}

/* ---------- 分层说明 ---------- */
.split{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:start;
}
.layer-list{display:flex;flex-direction:column;gap:16px;}
.layer-item{
  padding:20px 22px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.022);
  display:flex;
  gap:18px;
  align-items:flex-start;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.layer-item:hover{border-color:rgba(34,224,200,.4);background:rgba(34,224,200,.05);}
.layer-item h4{font-size:16px;margin-bottom:6px;}
.layer-item p{font-size:14px;color:var(--t2);line-height:1.7;}
.num-badge{
  flex:0 0 auto;
  width:44px;height:44px;
  display:grid;place-items:center;
  font-weight:800;
  font-size:16px;
  color:var(--amber);
  background:rgba(255,176,58,.12);
  border:1px solid rgba(255,176,58,.38);
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
}
.panel{
  padding:28px 30px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.kv-list{display:flex;flex-direction:column;}
.kv-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:15px 0;
  border-bottom:1px dashed var(--line-2);
  font-size:15px;
}
.kv-row:last-child{border-bottom:none;}
.kv-row dt{color:var(--t3);font-weight:400;margin:0;}
.kv-row dd{margin:0;color:var(--t1);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- 节奏流程 ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:flow;
}
.flow-step{
  position:relative;
  padding:26px 22px 24px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.012));
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.flow-step:hover{transform:translateY(-4px);border-color:rgba(255,176,58,.42);}
.flow-step::before{
  counter-increment:flow;
  content:"0" counter(flow);
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--amber);
  margin-bottom:14px;
}
.flow-step h4{font-size:17px;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--t2);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin-inline:auto;}
.accordion-item{
  background:var(--glass);
  border:1px solid var(--line) !important;
  border-radius:14px !important;
  margin-bottom:14px;
  overflow:hidden;
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  transition:border-color var(--dur) var(--ease);
}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(34,224,200,.45) !important;}
.accordion-button{
  background:transparent !important;
  color:var(--t1) !important;
  font-size:16px;
  font-weight:600;
  padding:19px 56px 19px 24px;
  box-shadow:none !important;
  border-radius:14px !important;
  position:relative;
}
.accordion-button::after{display:none !important;}
.accordion-button:focus{box-shadow:0 0 0 2px rgba(34,224,200,.35) !important;}
.faq-sign{
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:8px;
  border:1px solid var(--line-2);
  color:var(--mint);
  font-size:13px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.accordion-button:not(.collapsed){color:var(--mint) !important;}
.accordion-button:not(.collapsed) .faq-sign{transform:translateY(-50%) rotate(180deg);border-color:rgba(34,224,200,.55);}
.accordion-body{
  padding:0 24px 22px 24px;
  font-size:15px;
  color:var(--t2);
  line-height:1.8;
  border-left:3px solid transparent;
}
.accordion-button:not(.collapsed) + .accordion-collapse .accordion-body{
  border-left-color:var(--mint);
  box-shadow:inset 3px 0 12px -8px rgba(34,224,200,.9);
}

/* ---------- CTA 条带 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:calc(var(--r-card) + 4px);
  border:1px solid var(--line-2);
  background:
    radial-gradient(70% 120% at 12% 0%, rgba(47,107,255,.26), transparent 60%),
    radial-gradient(60% 120% at 92% 100%, rgba(255,176,58,.16), transparent 62%),
    linear-gradient(180deg, rgba(16,24,51,.92), rgba(10,16,32,.92));
  padding:46px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";
  position:absolute;
  left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,224,200,.75),transparent);
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);margin-bottom:10px;}
.cta-band p{max-width:520px;font-size:15px;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-meta{
  display:flex;
  gap:22px;
  flex-wrap:wrap;
  margin-top:18px;
  font-size:13px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:96px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(10,16,32,.9), rgba(5,7,15,.98));
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .brand{justify-self:start;}
.footer-brand p{font-size:14px;color:var(--t3);margin-top:18px;max-width:340px;line-height:1.75;}
.footer-contact{display:flex;flex-direction:column;gap:8px;margin-top:18px;font-size:14px;color:var(--t2);}
.footer-contact i{color:var(--mint);margin-right:8px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--t1);}
.footer-col a{
  display:block;
  font-size:14px;
  color:var(--t3);
  padding:6px 0;
}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{
  margin-top:52px;
  padding:22px 0 28px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--t3);
}
.to-top{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-2);
  background:var(--glass);
  color:var(--mint);
  cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.to-top:hover{transform:translateY(-3px);border-color:rgba(34,224,200,.6);box-shadow:0 0 18px -4px rgba(34,224,200,.7);}

/* ---------- 移动端抽屉 ---------- */
.offcanvas-drawer{
  background:linear-gradient(180deg, #0A1020, #05070F) !important;
  color:var(--t1);
  border-right:1px solid var(--line-2) !important;
  width:290px !important;
}
.drawer-head{
  display:flex;
  align-items:center;
  gap:10px;
  padding:20px 22px;
  border-bottom:1px solid var(--line);
}
.drawer-list{padding:16px 12px;}
.drawer-list a{
  display:block;
  padding:13px 14px;
  border-radius:12px;
  font-size:15px;
  color:var(--t2);
  border:1px solid transparent;
}
.drawer-list a:hover{background:rgba(255,255,255,.05);color:var(--t1);}
.drawer-list a.active{
  color:var(--t1);
  border-color:rgba(34,224,200,.4);
  background:rgba(34,224,200,.08);
}
.drawer-cta{padding:0 22px 28px;}

@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){
  .f-card,.panel,.accordion-item,.site-header{background:rgba(10,16,32,.96);}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sec-y:84px;}
  .container{max-width:1040px;}
}
@media (max-width:991.98px){
  :root{--sec-y:72px;}
  .nav-side{display:none;}
  .header-inner{grid-template-columns:auto 1fr auto;min-height:62px;}
  .brand{justify-self:center;}
  .brand__text{font-size:16px;}
  .nav-toggle{display:inline-flex;}
  .header-inner::after{content:"";width:42px;}
  .feature-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto;}
  .f-card--lg{grid-row:span 1;grid-column:1 / -1;}
  .f-card--wide{flex-direction:column;}
  .f-card--wide .f-card__shot,.f-card--wide .f-card__body{width:100%;}
  .f-card--wide .f-card__shot{border-right:none;border-bottom:1px solid var(--line);}
  .split{grid-template-columns:1fr;gap:36px;}
  .flow{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .metrics{grid-template-columns:1fr 1fr 1fr;gap:16px;}
  .metric-card{padding:20px;}
  .metric-card__num{font-size:28px;}
}
@media (max-width:767.98px){
  .container{padding-inline:18px;}
  .hero-band__inner{min-height:320px;padding-block:52px;}
  .hero-band__sub{font-size:16px;}
  .metrics{grid-template-columns:1fr;margin-top:24px;}
  .feature-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 24px;}
  .cta-band__actions .btn-rl{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  :root{--sec-y:56px;}
  .brand__text{font-size:15px;max-width:190px;white-space:normal;line-height:1.25;}
  .flow{grid-template-columns:1fr;}
  .layer-item{flex-direction:column;gap:12px;}
  .kv-row{flex-direction:column;align-items:flex-start;gap:4px;}
  .f-card__body{padding:20px 18px 22px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --bg:#08070d;
  --bg-2:#0d0b14;
  --panel:#12101c;
  --panel-2:#181528;
  --ink:#f3ede3;
  --ink-2:#c4bcae;
  --ink-3:#8d8578;
  --blue:#2F6BFF;
  --cyan:#22E0C8;
  --amber:#FFB03A;
  --danger:#FF6B6B;
  --line:rgba(243,237,227,.12);
  --line-2:rgba(243,237,227,.22);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 22px 44px -28px rgba(0,0,0,.95);
  --hard:5px 5px 0 rgba(0,0,0,.6);
  --tr:220ms cubic-bezier(.2,.7,.3,1);
  --pad-sec:100px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:
    radial-gradient(circle at 10% 6%, rgba(47,107,255,.16), transparent 46%),
    radial-gradient(circle at 88% 2%, rgba(255,176,58,.10), transparent 44%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(243,237,227,.06) 1px, transparent 1px);
  background-size:22px 22px;
  opacity:.55;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--tr),border-color var(--tr),background-color var(--tr)}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid rgba(34,224,200,.75);outline-offset:2px}
[id]{scroll-margin-top:92px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

.container-rl{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{padding:var(--pad-sec) 0;position:relative}
.section--tight{padding-top:64px}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--amber);
  text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:10px;height:10px;background:var(--amber);border-radius:2px;transform:rotate(45deg)}
.sec-title{font-size:clamp(22px,2.6vw,30px);letter-spacing:.01em}
.sec-desc{color:var(--ink-2);max-width:720px;margin-top:12px}
.sec-head{margin-bottom:40px}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- 按钮 ---------- */
.btn-rl{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;font-size:15px;font-weight:600;
  border-radius:var(--r-btn);border:2px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform var(--tr),box-shadow var(--tr),background-color var(--tr),border-color var(--tr),color var(--tr);
}
.btn-rl--primary{
  color:#04100f;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
  border-color:rgba(4,12,20,.7);
  box-shadow:4px 4px 0 rgba(0,0,0,.62),0 12px 26px -14px rgba(47,107,255,.6);
}
.btn-rl--primary:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(0,0,0,.66),0 16px 30px -14px rgba(34,224,200,.6);color:#04100f}
.btn-rl--primary:active{transform:translate(2px,2px);box-shadow:1px 1px 0 rgba(0,0,0,.6)}
.btn-rl--ghost{
  color:var(--ink);background:rgba(243,237,227,.03);
  border-color:var(--line-2);box-shadow:4px 4px 0 rgba(0,0,0,.5);
}
.btn-rl--ghost:hover{border-color:rgba(34,224,200,.65);color:var(--cyan);transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(0,0,0,.55)}
.btn-rl--sm{padding:10px 18px;font-size:14px}
.btn-rl--block{width:100%}
.btn-rl--arrow::after{content:"→";font-size:15px;transition:transform var(--tr)}
.btn-rl--arrow:hover::after{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.tag-rl{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;font-size:13px;border-radius:999px;
  border:2px solid var(--line-2);color:var(--ink-2);background:rgba(243,237,227,.03);
}
.tag-rl--cyan{border-color:rgba(34,224,200,.5);color:var(--cyan);background:rgba(34,224,200,.08)}
.tag-rl--amber{border-color:rgba(255,176,58,.5);color:var(--amber);background:rgba(255,176,58,.12)}
.tag-rl--info{border-color:rgba(47,107,255,.55);color:#a9c2ff;background:rgba(47,107,255,.12)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,7,13,.74);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background-color var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.site-header.is-scrolled{
  background:rgba(6,5,11,.93);
  border-bottom-color:rgba(34,224,200,.3);
  box-shadow:0 14px 30px -24px rgba(0,0,0,.95);
}
.nav-grid{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:16px;min-height:72px;transition:min-height var(--tr);
}
.site-header.is-scrolled .nav-grid{min-height:62px}
.nav-side{display:flex;align-items:center;gap:22px}
.nav-side--right{justify-content:flex-end}
.nav-link-rl{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 2px;
}
.nav-link-rl::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
  border-radius:2px;transition:left var(--tr),right var(--tr);
}
.nav-link-rl:hover{color:var(--ink)}
.nav-link-rl:hover::after{left:0;right:0}
.nav-link-rl.active{color:var(--ink)}
.nav-link-rl.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:3px;background:var(--cyan);
  box-shadow:0 0 12px rgba(34,224,200,.8);
}
.nav-link-rl.active::after{left:0;right:0;background:rgba(34,224,200,.55)}
.nav-cta{margin-left:6px}

.brand{display:flex;align-items:center;gap:10px;justify-self:center}
.brand__mark{
  width:38px;height:38px;display:grid;place-items:center;
  font-size:14px;font-weight:800;letter-spacing:.04em;color:#1a1206;
  background:linear-gradient(135deg,var(--amber),#ffd591);
  border:2px solid rgba(0,0,0,.6);border-radius:10px;
  box-shadow:3px 3px 0 rgba(0,0,0,.55);
}
.brand__text{font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--ink)}

.nav-toggle{
  display:none;flex-direction:column;gap:4px;
  width:44px;height:44px;justify-content:center;align-items:center;
  background:rgba(243,237,227,.04);border:2px solid var(--line-2);
  border-radius:10px;box-shadow:3px 3px 0 rgba(0,0,0,.5);cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px}

.rl-drawer{background:#0c0a14;color:var(--ink);border-left:2px solid var(--line)}
.rl-drawer .offcanvas-header{border-bottom:1px dashed var(--line-2)}
.rl-drawer .btn-close{filter:invert(1) grayscale(1);opacity:.75}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.drawer-nav a{
  padding:13px 14px;border:2px solid var(--line);border-radius:10px;
  color:var(--ink-2);font-size:15px;
}
.drawer-nav a:hover{border-color:var(--line-2);color:var(--ink)}
.drawer-nav a.active{border-color:rgba(34,224,200,.55);color:var(--cyan);background:rgba(34,224,200,.08)}
.drawer-meta{margin-top:20px;font-size:13px;color:var(--ink-3);display:flex;flex-direction:column;gap:6px}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:84px 0 68px;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;
  opacity:.35;
}
.page-hero__veil{
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 76% 26%, rgba(47,107,255,.26), transparent 56%),
    linear-gradient(180deg, rgba(8,7,13,.72), rgba(8,7,13,.95));
}
.page-hero__grid{
  position:absolute;inset:0;opacity:.42;
  background-image:
    linear-gradient(rgba(243,237,227,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(243,237,227,.05) 1px, transparent 1px);
  background-size:24px 24px;
}
.page-hero .container-rl{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-3);margin-bottom:22px;flex-wrap:wrap}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{width:1px;height:13px;background:var(--line-2)}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:.01em;line-height:1.2;
  max-width:860px;
}
.page-hero__lead{margin-top:18px;max-width:680px;color:var(--ink-2);font-size:17px}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-notes{display:flex;gap:20px;flex-wrap:wrap;margin-top:22px;font-size:13.5px;color:var(--ink-3)}
.hero-notes span{display:inline-flex;align-items:center;gap:7px}
.hero-notes i{color:var(--cyan)}

/* ---------- 通用卡片 ---------- */
.card-rl{
  background:var(--panel);
  border:2px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--hard);
  padding:26px;
  transition:transform var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.card-rl:hover{border-color:rgba(34,224,200,.35)}
.img-rl{
  border-radius:var(--r-img);border:2px solid var(--line);
  width:100%;height:100%;object-fit:cover;
}

/* ---------- 自助三步 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.step{
  position:relative;padding:26px 24px;
  background:linear-gradient(180deg,rgba(243,237,227,.045),rgba(243,237,227,.015));
  border:2px dashed var(--line-2);border-radius:var(--r-card);
}
.step__num{
  display:inline-grid;place-items:center;width:38px;height:38px;margin-bottom:14px;
  font-weight:800;font-size:15px;color:#1a1206;background:var(--amber);
  border:2px solid rgba(0,0,0,.55);border-radius:8px;box-shadow:3px 3px 0 rgba(0,0,0,.5);
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{color:var(--ink-2);font-size:15px}
.step--wide{grid-column:span 1}

/* ---------- 帮助主体 ---------- */
.help-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:32px;align-items:start}
.help-toc{
  position:sticky;top:96px;
  padding:18px;border:2px solid var(--line);border-radius:var(--r-card);
  background:var(--panel);box-shadow:var(--hard);
}
.help-toc__title{font-size:13px;letter-spacing:.12em;color:var(--ink-3);margin-bottom:12px;text-transform:uppercase}
.help-toc a{
  display:block;padding:10px 12px;margin-bottom:4px;border-radius:8px;
  font-size:15px;color:var(--ink-2);border-left:3px solid transparent;
}
.help-toc a:hover{color:var(--ink);background:rgba(243,237,227,.05)}
.help-toc a.is-active{
  color:var(--ink);border-left-color:var(--cyan);background:rgba(34,224,200,.09);
}
.help-toc__hint{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line-2);font-size:13px;color:var(--ink-3)}

.faq-group{margin-bottom:46px}
.faq-group:last-child{margin-bottom:0}
.faq-group__title{
  display:flex;align-items:center;gap:12px;
  font-size:clamp(19px,2.2vw,23px);margin-bottom:18px;
}
.faq-group__title .idx{
  display:inline-grid;place-items:center;width:34px;height:34px;flex:0 0 34px;
  font-size:13px;font-weight:800;color:var(--amber);
  border:2px solid rgba(255,176,58,.5);border-radius:8px;background:rgba(255,176,58,.1);
}

.accordion-item{
  background:var(--panel);border:2px solid var(--line);
  border-radius:12px;margin-bottom:12px;overflow:hidden;
}
.accordion-item:hover{border-color:rgba(34,224,200,.3)}
.accordion-button{
  position:relative;width:100%;text-align:left;
  background:transparent;color:var(--ink);font-size:16px;font-weight:600;line-height:1.6;
  padding:18px 56px 18px 18px;border:0;border-radius:0!important;
  box-shadow:none!important;transition:color var(--tr),background-color var(--tr);
}
.accordion-button:not(.collapsed){
  color:var(--cyan);background-color:rgba(34,224,200,.07);
  box-shadow:inset 3px 0 0 0 var(--cyan)!important;
}
.accordion-button:hover{color:var(--cyan)}
.accordion-button::after{display:none}
.faq-sign{
  position:absolute;right:16px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;display:grid;place-items:center;
  font-size:16px;font-weight:700;color:var(--ink-2);
  border:2px solid var(--line-2);border-radius:7px;background:rgba(243,237,227,.03);
}
.faq-sign::before{content:"+"}
.accordion-button:not(.collapsed) .faq-sign{color:var(--cyan);border-color:rgba(34,224,200,.6);background:rgba(34,224,200,.12)}
.accordion-button:not(.collapsed) .faq-sign::before{content:"−"}
.accordion-body{
  padding:2px 20px 22px;color:var(--ink-2);font-size:15.5px;line-height:1.85;
  border-top:1px dashed var(--line);
}

/* ---------- 版本与支持范围 ---------- */
.spec-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:36px;align-items:center}
.spec-figure{
  position:relative;border:2px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--hard);background:var(--panel-2);
}
.spec-figure img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover}
.spec-figure__cap{
  position:absolute;left:14px;bottom:14px;
  padding:7px 14px;font-size:13px;color:var(--ink);
  background:rgba(6,5,11,.78);border:2px solid var(--line-2);border-radius:999px;
}
.spec-list{border-top:1px dashed var(--line-2)}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:15px 4px;border-bottom:1px dashed var(--line-2);
}
.spec-row__k{color:var(--ink-2);font-size:15px}
.spec-row__v{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--ink)}
.spec-note{margin-top:18px;font-size:13.5px;color:var(--ink-3)}

/* ---------- 联系卡 ---------- */
.contact-wrap{
  display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:0;border:2px solid var(--line);border-radius:16px;overflow:hidden;
  background:var(--panel);box-shadow:var(--hard);
}
.contact-intro{
  padding:34px;
  background:
    radial-gradient(circle at 12% 12%, rgba(47,107,255,.22), transparent 58%),
    linear-gradient(180deg,rgba(243,237,227,.05),rgba(243,237,227,.01));
  border-right:2px dashed var(--line-2);
}
.contact-intro h2{font-size:clamp(21px,2.4vw,27px);margin-bottom:14px}
.contact-intro p{color:var(--ink-2);font-size:15.5px}
.contact-meta{margin-top:26px;display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--ink-2)}
.contact-meta span{display:flex;align-items:center;gap:10px}
.contact-meta i{color:var(--cyan);width:18px;text-align:center}
.contact-form{padding:34px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:14px;color:var(--ink-2)}
.field input,.field textarea{
  width:100%;padding:12px 14px;font-size:15px;color:var(--ink);
  background:#0b0a13;border:2px solid var(--line);border-radius:10px;
  font-family:inherit;transition:border-color var(--tr),box-shadow var(--tr),background-color var(--tr);
}
.field textarea{min-height:132px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:rgba(34,224,200,.75);background:#0d0c16;
  box-shadow:0 0 0 3px rgba(34,224,200,.16);
}
.form-note{font-size:13px;color:var(--ink-3);margin-top:14px}
.form-msg{
  display:none;margin-top:16px;padding:12px 16px;font-size:14.5px;
  color:var(--cyan);border:2px solid rgba(34,224,200,.5);
  border-radius:10px;background:rgba(34,224,200,.08);
}
.form-msg.is-show{display:block}

/* ---------- 底部下载条带 ---------- */
.download-band{
  border:2px solid var(--line);border-radius:16px;overflow:hidden;
  background:
    radial-gradient(circle at 84% 18%, rgba(34,224,200,.16), transparent 52%),
    linear-gradient(180deg,rgba(243,237,227,.055),rgba(243,237,227,.015));
  box-shadow:var(--hard);
  padding:34px;
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:30px;align-items:center;
}
.download-band h2{font-size:clamp(20px,2.3vw,26px);margin-bottom:12px}
.download-band p{color:var(--ink-2);font-size:15.5px}
.version-grid{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.version-chip{
  padding:10px 14px;border:2px solid var(--line);border-radius:10px;
  background:rgba(6,5,11,.5);font-size:13.5px;color:var(--ink-2);
}
.version-chip b{display:block;color:var(--amber);font-size:15px;margin-top:4px;font-variant-numeric:tabular-nums}
.download-side{display:flex;flex-direction:column;gap:16px;align-items:flex-start}
.qr-card{
  width:180px;padding:14px;background:#fff;border-radius:12px;
  box-shadow:var(--hard);display:grid;gap:8px;justify-items:center;
}
.qr-card__box{width:100%;aspect-ratio:1/1;border-radius:8px;background:
  repeating-linear-gradient(45deg,#111 0 6px,#fff 6px 12px);}
.qr-card span{font-size:12px;color:#333}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:20px;padding:66px 0 30px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,10,20,.6),rgba(6,5,11,.95));
  position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand{justify-self:start;margin-bottom:18px}
.footer-brand p{color:var(--ink-2);font-size:14.5px;max-width:340px}
.footer-contact{display:flex;flex-direction:column;gap:9px;font-size:14px;color:var(--ink-3);margin-top:16px}
.footer-contact i{color:var(--cyan);margin-right:7px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink)}
.footer-col a{display:block;margin-bottom:10px;font-size:14.5px;color:var(--ink-2)}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px dashed var(--line-2);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13.5px;color:var(--ink-3);
}
.to-top{
  width:42px;height:42px;display:grid;place-items:center;
  color:var(--ink);background:rgba(243,237,227,.04);
  border:2px solid var(--line-2);border-radius:10px;cursor:pointer;
  box-shadow:3px 3px 0 rgba(0,0,0,.5);
  transition:transform var(--tr),border-color var(--tr),color var(--tr),box-shadow var(--tr);
}
.to-top:hover{color:var(--cyan);border-color:rgba(34,224,200,.6);transform:translate(-2px,-2px);box-shadow:5px 5px 0 rgba(0,0,0,.55)}

@supports not (backdrop-filter: blur(14px)){
  .site-header{background:rgba(8,7,13,.97)}
}

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

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--pad-sec:84px}
  .help-layout{grid-template-columns:220px minmax(0,1fr);gap:26px}
  .spec-layout{gap:28px}
}

@media (max-width:991px){
  :root{--pad-sec:72px}
  .nav-grid{grid-template-columns:auto 1fr auto;min-height:66px}
  .nav-side{display:none}
  .brand{justify-self:center}
  .nav-toggle{display:flex}
  .page-hero{padding:64px 0 56px}
  .steps{grid-template-columns:1fr;gap:18px}
  .help-layout{grid-template-columns:1fr;gap:22px}
  .help-toc{
    position:static;display:flex;gap:10px;overflow-x:auto;
    padding:12px;scroll-snap-type:x mandatory;
  }
  .help-toc__title,.help-toc__hint{display:none}
  .help-toc a{
    flex:0 0 auto;margin:0;white-space:nowrap;scroll-snap-align:start;
    border-left:none;border-bottom:3px solid transparent;border-radius:8px;
  }
  .help-toc a.is-active{border-left:none;border-bottom-color:var(--cyan)}
  .spec-layout{grid-template-columns:1fr}
  .contact-wrap{grid-template-columns:1fr}
  .contact-intro{border-right:0;border-bottom:2px dashed var(--line-2)}
  .download-band{grid-template-columns:1fr;padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}

@media (max-width:575px){
  :root{--pad-sec:56px}
  .container-rl{padding:0 18px}
  .brand__mark{width:34px;height:34px;font-size:13px}
  .brand__text{font-size:16px}
  .page-hero h1{font-size:26px}
  .page-hero__lead{font-size:15.5px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-rl{width:100%}
  .hero-notes{flex-direction:column;gap:8px}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .version-grid{gap:10px}
  .qr-card{width:150px}
  .contact-form,.contact-intro{padding:24px}
  .card-rl{padding:20px}
}