/* roulang page: index */
:root{
  --sky-bg:#070A18;
  --sky-panel:#10162B;
  --sky-card:rgba(20,26,51,.66);
  --sky-primary:#2FD9C4;
  --sky-primary-hover:#59F0DC;
  --sky-primary-active:#1FB3A2;
  --sky-purple:#7C5CFF;
  --sky-orange:#FF8A3D;
  --sky-text:#E7EBF7;
  --sky-text-2:#9AA6C4;
  --sky-text-3:#6C7693;
  --sky-line:rgba(255,255,255,.10);
  --sky-line-hi:rgba(255,255,255,.18);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-card:inset 0 1px 0 rgba(255,255,255,.08), 0 18px 40px -24px rgba(0,0,0,.85);
  --sh-card-hover:inset 0 1px 0 rgba(255,255,255,.14), 0 26px 54px -26px rgba(0,0,0,.9);
  --sh-glow:0 0 0 1px rgba(47,217,196,.6), 0 10px 30px -10px rgba(47,217,196,.7);
  --bs-body-bg:#070A18;
  --bs-body-color:#E7EBF7;
  --bs-primary:#2FD9C4;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-border-radius:16px;
  --bs-link-color:#2FD9C4;
  --bs-link-hover-color:#59F0DC;
  --bs-accordion-bg:transparent;
  --bs-accordion-color:#E7EBF7;
  --bs-accordion-border-color:rgba(255,255,255,.10);
  --bs-accordion-btn-color:#E7EBF7;
  --bs-accordion-active-color:#2FD9C4;
  --bs-accordion-active-bg:transparent;
}
*,*::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","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  color:var(--sky-text);
  background-color:var(--sky-bg);
  overflow-x:hidden;
  font-variant-numeric:tabular-nums;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 620px at 12% -6%, rgba(47,217,196,.16), transparent 70%),
    radial-gradient(780px 540px at 90% 6%, rgba(124,92,255,.18), transparent 72%),
    radial-gradient(960px 720px at 50% 104%, rgba(47,217,196,.08), transparent 76%),
    #070A18;
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.55;
  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:64px 64px;
  -webkit-mask-image:radial-gradient(1200px 820px at 50% 0%, #000 12%, transparent 82%);
  mask-image:radial-gradient(1200px 820px at 50% 0%, #000 12%, transparent 82%);
}
img{max-width:100%;display:block;height:auto}
a{color:var(--sky-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--sky-primary-hover)}
h1,h2,h3,h4{margin:0;line-height:1.25;color:var(--sky-text)}
h1{font-size:clamp(28px,4vw,48px);font-weight:800;letter-spacing:-.5px}
h2{font-size:clamp(22px,2.6vw,36px);font-weight:700}
h3{font-size:clamp(17px,1.6vw,22px);font-weight:600}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--sky-primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(47,217,196,.32);color:#fff}
.shell{width:min(1200px,92vw);margin-inline:auto}
.section{padding:96px 0;position:relative}
.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(--sky-text-2);max-width:640px;margin:10px 0 0;font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--sky-primary);background:rgba(47,217,196,.10);border:1px solid rgba(47,217,196,.28);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:18px;
}
.eyebrow i{font-size:11px}
.muted{color:var(--sky-text-2)}
.dim{color:var(--sky-text-3)}

/* ---------- Dock 导航 ---------- */
.site-header{position:sticky;top:16px;z-index:1030;padding:0 0 4px}
.dock{
  position:relative;width:min(1120px,92vw);margin-inline:auto;
  display:flex;align-items:center;gap:20px;
  padding:12px 16px 12px 20px;border-radius:var(--r-pill);
  background:rgba(16,22,43,.72);
  border:1px solid var(--sky-line);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10), 0 20px 46px -28px rgba(0,0,0,.95);
  transition:padding .25s ease,background .25s ease,box-shadow .25s ease;
}
.dock.is-scrolled{padding:8px 14px 8px 18px;background:rgba(12,17,34,.88);box-shadow:inset 0 1px 0 rgba(255,255,255,.12), 0 24px 52px -26px rgba(0,0,0,1)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(140deg,var(--sky-primary),var(--sky-purple));
  display:flex;align-items:center;justify-content:center;color:#04121A;font-size:15px;
  box-shadow:0 0 0 1px rgba(255,255,255,.18), 0 8px 22px -10px rgba(47,217,196,.9);
}
.brand-name{font-size:16px;font-weight:700;color:var(--sky-text);letter-spacing:.2px;white-space:nowrap}
.brand-name span{color:var(--sky-primary)}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap}
.dock-nav a{
  position:relative;display:inline-flex;align-items:center;color:var(--sky-text-2);
  font-size:14px;font-weight:500;padding:10px 14px;border-radius:var(--r-pill);
  transition:color .2s ease,background .2s ease;
}
.dock-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:var(--sky-primary);transform:scaleX(0);transform-origin:center;transition:transform .25s ease;
}
.dock-nav a:hover{color:var(--sky-text);background:rgba(255,255,255,.05)}
.dock-nav a:hover::after{transform:scaleX(1)}
.dock-nav a.is-active{color:var(--sky-primary);background:rgba(47,217,196,.10)}
.dock-nav a.is-active::after{transform:scaleX(1)}
.dock-tools{display:flex;align-items:center;gap:10px;flex-shrink:0}
.dock-search{
  display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--sky-line);color:var(--sky-text-3);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,color .2s ease;cursor:pointer;
}
.dock-search:hover{color:var(--sky-text-2);border-color:var(--sky-line-hi)}
.btn-sky{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-pill);border:1px solid transparent;
  background:var(--sky-primary);color:#04121A;font-size:15px;font-weight:600;cursor:pointer;
  box-shadow:var(--sh-glow);transition:background .2s ease,box-shadow .2s ease,transform .15s ease,filter .2s ease;
}
.btn-sky:hover{background:var(--sky-primary-hover);color:#04121A;filter:brightness(1.06);box-shadow:0 0 0 1px rgba(89,240,220,.7), 0 16px 38px -12px rgba(47,217,196,.85)}
.btn-sky:active{background:var(--sky-primary-active);transform:translateY(1px)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--sky-line-hi);color:var(--sky-text);
  font-size:15px;font-weight:600;cursor:pointer;transition:background .2s ease,border-color .2s ease,transform .15s ease;
}
.btn-ghost:hover{background:rgba(255,255,255,.10);color:var(--sky-text);border-color:rgba(255,255,255,.3)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:0 16px;min-height:40px;font-size:14px}
.dock-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);border:1px solid var(--sky-line);color:var(--sky-text);font-size:16px;cursor:pointer;
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 96px}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.22;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg, rgba(7,10,24,.55) 0%, rgba(7,10,24,.9) 62%, #070A18 100%);
}
.hero > .shell{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-copy h1{margin-bottom:18px}
.hero-copy h1 em{font-style:normal;background:linear-gradient(100deg,var(--sky-primary),var(--sky-purple));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:18px;line-height:1.75;color:var(--sky-text-2);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.trust-bar{display:flex;flex-wrap:wrap;gap:10px}
.trust-pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--sky-line);font-size:13px;color:var(--sky-text-2);
}
.trust-pill i{color:var(--sky-primary);font-size:12px}
.hero-device{position:relative;display:flex;justify-content:center}
.device-frame{
  width:100%;max-width:340px;padding:12px;border-radius:38px;
  background:linear-gradient(160deg, rgba(255,255,255,.14), rgba(255,255,255,.02) 40%, rgba(47,217,196,.12));
  border:1px solid var(--sky-line-hi);
  box-shadow:0 40px 80px -40px rgba(0,0,0,1), inset 0 1px 0 rgba(255,255,255,.2);
}
.device-frame img{border-radius:28px;width:100%;aspect-ratio:9/17;object-fit:cover;background:#0b1022}
.hero-badge{
  position:absolute;left:-6px;bottom:26px;display:flex;flex-direction:column;gap:2px;
  padding:12px 18px;border-radius:var(--r-md);background:rgba(12,17,34,.9);
  border:1px solid var(--sky-line-hi);box-shadow:var(--sh-card);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.hero-badge strong{font-size:18px;color:var(--sky-primary);font-weight:700}
.hero-badge span{font-size:12px;color:var(--sky-text-3)}

/* ---------- 核心价值 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.card{
  position:relative;border-radius:var(--r-lg);
  background:var(--sky-card);border:1px solid var(--sky-line);
  box-shadow:var(--sh-card);
  -webkit-backdrop-filter:blur(14px) saturate(150%);backdrop-filter:blur(14px) saturate(150%);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;border-radius:var(--r-lg) var(--r-lg) 0 0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.22);box-shadow:var(--sh-card-hover)}
.value-main{grid-column:span 7;padding:32px;display:flex;flex-direction:column;gap:20px;overflow:hidden}
.value-main img{border-radius:var(--r-md);width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--sky-line)}
.value-main h3{font-size:24px}
.value-main p{color:var(--sky-text-2);font-size:15px;margin:0}
.value-list{grid-column:span 5;display:flex;flex-direction:column;gap:20px}
.value-item{display:flex;gap:16px;padding:24px;align-items:flex-start;flex:1}
.icon-box{
  width:46px;height:46px;flex-shrink:0;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--sky-primary);background:rgba(47,217,196,.12);border:1px solid rgba(47,217,196,.26);
}
.icon-box.purple{color:#B9A6FF;background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.3)}
.icon-box.orange{color:#FFC49A;background:rgba(255,138,61,.14);border-color:rgba(255,138,61,.3)}
.value-item h3{font-size:17px;margin-bottom:6px}
.value-item p{font-size:14px;color:var(--sky-text-2);margin:0}

/* ---------- 轮播 ---------- */
.carousel-shell{padding:40px;border-radius:var(--r-lg)}
.slide-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:8px}
.slide-copy h3{font-size:26px;margin-bottom:14px}
.slide-copy ul{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.slide-copy li{display:flex;gap:12px;font-size:15px;color:var(--sky-text-2);line-height:1.7}
.slide-copy li i{color:var(--sky-primary);margin-top:6px;font-size:12px}
.slide-shot{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--sky-line-hi);box-shadow:0 30px 60px -34px rgba(0,0,0,1)}
.slide-shot img{width:100%;aspect-ratio:16/11;object-fit:cover}
.sky-carousel .carousel-indicators{position:static;margin:28px 0 0;gap:8px}
.sky-carousel .carousel-indicators [data-bs-target]{
  width:30px;height:5px;border-radius:var(--r-pill);background:rgba(255,255,255,.18);
  border:0;margin:0;opacity:1;transition:background .25s ease,width .25s ease;
}
.sky-carousel .carousel-indicators .active{background:var(--sky-primary);width:46px}
.sky-carousel .carousel-control-prev,.sky-carousel .carousel-control-next{
  width:52px;height:52px;top:38%;border-radius:50%;opacity:1;
  background:rgba(255,255,255,.06);border:1px solid var(--sky-line-hi);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  transition:background .2s ease,transform .2s ease;
}
.sky-carousel .carousel-control-prev{left:-8px}
.sky-carousel .carousel-control-next{right:-8px}
.sky-carousel .carousel-control-prev:hover,.sky-carousel .carousel-control-next:hover{background:rgba(47,217,196,.2);transform:scale(1.05)}
.sky-carousel .carousel-control-prev-icon,.sky-carousel .carousel-control-next-icon{width:16px;height:16px}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.req-card{padding:28px}
.req-card .icon-box{margin-bottom:18px}
.req-card h3{font-size:18px;margin-bottom:16px}
.req-card dl{margin:0;display:flex;flex-direction:column;gap:12px}
.req-card dt{font-size:13px;color:var(--sky-text-3);font-weight:500}
.req-card dd{margin:2px 0 0;font-size:15px;color:var(--sky-text);font-weight:600}
.req-card dd span{display:block;font-weight:400;font-size:13px;color:var(--sky-text-2);margin-top:2px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:rgba(124,92,255,.16);border:1px solid rgba(124,92,255,.34);color:#C3B4FF;
}
.tag.orange{background:rgba(255,138,61,.16);border-color:rgba(255,138,61,.36);color:#FFB98A}
.tag.cyan{background:rgba(47,217,196,.14);border-color:rgba(47,217,196,.32);color:var(--sky-primary)}

/* ---------- 评价墙 ---------- */
.review-wall{columns:2;column-gap:20px}
.review-card{break-inside:avoid;margin-bottom:20px;padding:24px}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#04121A;background:linear-gradient(140deg,var(--sky-primary),var(--sky-purple));
}
.review-name{font-size:15px;font-weight:600}
.review-src{font-size:12px;color:var(--sky-text-3)}
.stars{color:var(--sky-orange);font-size:12px;letter-spacing:2px;margin-bottom:10px}
.review-card p{font-size:14px;color:var(--sky-text-2);margin:0}

/* ---------- 下载大卡 ---------- */
.download-card{
  position:relative;overflow:hidden;padding:48px;border-radius:var(--r-lg);
  background:
    radial-gradient(600px 320px at 12% 0%, rgba(47,217,196,.22), transparent 70%),
    radial-gradient(520px 320px at 92% 100%, rgba(124,92,255,.22), transparent 72%),
    rgba(16,22,43,.82);
  border:1px solid rgba(47,217,196,.36);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12), 0 0 0 1px rgba(47,217,196,.16), 0 30px 70px -40px rgba(47,217,196,.7);
}
.download-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;position:relative;z-index:1}
.download-copy h2{margin-bottom:16px}
.download-points{display:flex;flex-direction:column;gap:10px;margin:20px 0 24px}
.download-points li{display:flex;gap:10px;font-size:15px;color:var(--sky-text-2)}
.download-points li i{color:var(--sky-primary);margin-top:6px;font-size:12px}
.download-meta{display:flex;flex-wrap:wrap;gap:10px}
.download-actions{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.download-actions .btn-sky,.download-actions .btn-ghost{width:100%}
.qr-box{
  grid-column:span 2;display:flex;align-items:center;gap:18px;padding:18px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid var(--sky-line);
}
.qr-code{
  width:96px;height:96px;border-radius:12px;background:#F4F7FF;color:#10162B;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;text-align:center;line-height:1.4;
}
.qr-box p{margin:0;font-size:13px;color:var(--sky-text-2)}
.qr-box strong{display:block;color:var(--sky-text);font-size:15px;margin-bottom:4px}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{display:flex;flex-direction:column;overflow:hidden;text-decoration:none;color:inherit}
.news-card:hover{color:inherit}
.news-cover{aspect-ratio:16/9;overflow:hidden;background:#0b1022}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-cover img{transform:scale(1.05)}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{
  font-size:17px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;color:var(--sky-text-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px;font-size:13px;color:var(--sky-text-3)}
.news-foot i{color:var(--sky-primary);transition:transform .25s ease}
.news-card:hover .news-foot i{transform:translateX(4px)}
.news-empty{
  grid-column:1/-1;text-align:center;padding:56px 24px;border-radius:var(--r-lg);
  background:rgba(20,26,51,.5);border:1px dashed var(--sky-line-hi);
}
.news-empty .empty-art{
  width:64px;height:64px;margin:0 auto 16px;border-radius:20px;display:flex;align-items:center;justify-content:center;
  font-size:24px;color:var(--sky-primary);background:rgba(47,217,196,.12);border:1px solid rgba(47,217,196,.28);
}
.news-empty p{color:var(--sky-text-2);margin-bottom:16px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin-inline:auto}
.sky-accordion .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--sky-line);
}
.sky-accordion .accordion-item:first-of-type{border-top:1px solid var(--sky-line)}
.sky-accordion .accordion-button{
  background:transparent;color:var(--sky-text);font-size:16px;font-weight:600;
  padding:22px 56px 22px 18px;box-shadow:none;border-radius:0;
  transition:box-shadow .25s ease,color .25s ease;
}
.sky-accordion .accordion-button:not(.collapsed){
  color:var(--sky-primary);box-shadow:inset 3px 0 0 var(--sky-primary);
}
.sky-accordion .accordion-button:focus{box-shadow:inset 3px 0 0 var(--sky-primary);border:0}
.sky-accordion .accordion-button::after{
  content:"+";background-image:none;transform:none;
  display:flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:50%;border:1px solid var(--sky-line-hi);
  color:var(--sky-primary);font-size:20px;font-weight:400;margin-left:auto;
  transition:transform .25s ease,border-color .25s ease;
}
.sky-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg);border-color:rgba(47,217,196,.5)}
.sky-accordion .accordion-body{padding:0 56px 24px 18px;color:var(--sky-text-2);font-size:15px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;padding:72px 0 28px;position:relative;
  background:rgba(6,9,20,.86);border-top:1px solid var(--sky-line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,217,196,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:48px}
.footer-brand p{font-size:14px;color:var(--sky-text-2);margin:16px 0 0;max-width:320px}
.footer-col h4{font-size:14px;color:var(--sky-text-3);font-weight:500;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--sky-text-2);position:relative;display:inline-block}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:var(--sky-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.footer-col a:hover{color:var(--sky-primary)}
.footer-col a:hover::after{transform:scaleX(1)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding-top:24px;border-top:1px solid var(--sky-line);font-size:13px;color:var(--sky-text-3);
}
.footer-bottom p{margin:0}
.footer-bottom .tech{color:var(--sky-text-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-grid{gap:40px}
  .download-grid{gap:32px}
}
@media (max-width:991.98px){
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .hero{padding:48px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-sub{max-width:100%}
  .value-grid{grid-template-columns:1fr}
  .value-main,.value-list{grid-column:span 1}
  .req-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .review-wall{columns:1}
  .download-grid{grid-template-columns:1fr}
  .download-card{padding:32px}
  .slide-grid{grid-template-columns:1fr;gap:28px}
  .carousel-shell{padding:24px}
  .sky-carousel .carousel-control-prev,.sky-carousel .carousel-control-next{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .dock{gap:12px;padding:10px 12px 10px 16px}
  .dock-search{display:none}
  .dock-nav{display:none}
  .dock-toggle{display:inline-flex}
  .dock.is-open .dock-nav{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;margin:0;
    position:absolute;top:calc(100% + 12px);left:0;right:0;padding:16px;
    background:rgba(11,16,32,.97);border:1px solid var(--sky-line-hi);border-radius:var(--r-lg);
    box-shadow:0 30px 60px -30px rgba(0,0,0,1);
    -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  }
  .dock.is-open .dock-nav a{padding:14px 16px;border-radius:var(--r-sm);font-size:15px}
  .dock.is-open .dock-nav a::after{display:none}
  .dock.is-open .dock-nav a.is-active{background:rgba(47,217,196,.12)}
  .dock-tools{margin-left:auto}
}
@media (max-width:767.98px){
  .news-grid{grid-template-columns:1fr}
  .download-actions{grid-template-columns:1fr}
  .qr-box{grid-column:span 1;flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .hero-badge{left:0;bottom:8px;padding:10px 14px}
  .dock-tools .btn-sky{padding:0 16px;font-size:14px}
}
@media (max-width:575.98px){
  .section{padding:56px 0}
  .hero-copy h1{font-size:27px}
  .hero-sub{font-size:16px}
  .value-main{padding:24px}
  .download-card{padding:24px}
  .brand-name{font-size:15px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --bg:#070A18;
  --panel:#10162B;
  --glass:rgba(20,26,51,.66);
  --primary:#2FD9C4;
  --primary-hover:#59F0DC;
  --primary-active:#1FB3A2;
  --purple:#7C5CFF;
  --orange:#FF8A3D;
  --text:#E7EBF7;
  --text-2:#9AA6C4;
  --text-3:#6C7693;
  --line:rgba(255,255,255,.10);
  --line-hi:rgba(255,255,255,.18);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.08), 0 18px 40px -24px rgba(0,0,0,.85);
  --shadow-hover:inset 0 1px 0 rgba(255,255,255,.14), 0 26px 56px -26px rgba(0,0,0,.92);
  --bs-body-bg:#070A18;
  --bs-body-color:#E7EBF7;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-primary:#2FD9C4;
  --bs-link-color:#2FD9C4;
  --bs-link-hover-color:#59F0DC;
  --bs-border-radius:16px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(680px 460px at 10% 6%, rgba(47,217,196,.14), transparent 62%),
    radial-gradient(760px 520px at 90% 10%, rgba(124,92,255,.17), transparent 64%),
    radial-gradient(900px 600px at 50% 108%, rgba(47,217,196,.08), transparent 68%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.55;
  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:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 26%, #000 0%, transparent 76%);
  mask-image:radial-gradient(circle at 50% 26%, #000 0%, transparent 76%);
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-hover);}
button,input{font-family:inherit;}
h1,h2,h3,h4{line-height:1.25;margin:0;color:var(--text);}
h1{font-size:48px;font-weight:800;letter-spacing:-.5px;}
h2{font-size:36px;font-weight:700;letter-spacing:-.3px;}
h3{font-size:22px;font-weight:600;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.shell{width:min(1200px,92vw);margin-inline:auto;position:relative;z-index:2;}
.section-pad{padding:96px 0;}
.section-pad-sm{padding:72px 0;}
.page{position:relative;z-index:1;}

/* ============ Dock 导航 ============ */
.site-header{
  position:sticky;
  top:16px;
  z-index:60;
  width:100%;
  padding:0 4vw;
}
.dock{
  width:min(1120px,92vw);
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:18px;
  padding:10px 14px 10px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(12,17,34,.72);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), 0 18px 44px -26px rgba(0,0,0,.9);
  transition:padding .25s ease, background .25s ease, box-shadow .25s ease;
}
.dock.is-scrolled{
  padding:6px 12px 6px 16px;
  background:rgba(10,14,29,.88);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10), 0 22px 50px -26px rgba(0,0,0,.95);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--purple));
  color:#04201d;font-size:14px;
  box-shadow:0 0 0 1px rgba(47,217,196,.55), 0 10px 26px -12px rgba(47,217,196,.8);
}
.brand-name{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.2px;white-space:nowrap;}
.brand-name span{color:var(--primary);font-weight:700;margin-left:2px;}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.dock-nav a{
  position:relative;
  font-size:14px;
  color:var(--text-2);
  padding:9px 14px;
  border-radius:var(--r-pill);
  white-space:nowrap;
  transition:color .2s ease, background .2s ease;
}
.dock-nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:5px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .28s ease;
}
.dock-nav a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.dock-nav a:hover::after{transform:scaleX(1);}
.dock-nav a.is-active{color:var(--text);background:rgba(47,217,196,.12);}
.dock-nav a.is-active::after{transform:scaleX(1);}
.dock-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.dock-search{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  font-size:14px;
  cursor:pointer;
  transition:.22s ease;
}
.dock-search:hover{color:var(--text);border-color:var(--line-hi);background:rgba(255,255,255,.07);}
.dock-search i{color:var(--primary);font-size:13px;}
.dock-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);
  cursor:pointer;
  transition:.22s ease;
}
.dock-toggle:hover{border-color:var(--line-hi);}
.btn-sky{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  border:0;
  font-size:15px;
  font-weight:600;
  color:#04201d;
  background:linear-gradient(120deg,#2FD9C4,#5BE9D4);
  box-shadow:0 0 0 1px rgba(47,217,196,.6), 0 10px 30px -10px rgba(47,217,196,.7);
  cursor:pointer;
  transition:transform .2s ease, filter .2s ease, box-shadow .25s ease;
}
.btn-sky:hover{color:#04201d;filter:brightness(1.08);box-shadow:0 0 0 1px rgba(89,240,220,.85), 0 16px 38px -12px rgba(47,217,196,.85);}
.btn-sky:active{transform:translateY(1px);}
.btn-sky.btn-sm{min-height:40px;padding:9px 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-hi);
  background:rgba(255,255,255,.04);
  color:var(--text);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:.22s ease;
}
.btn-ghost:hover{color:var(--text);border-color:rgba(47,217,196,.55);background:rgba(47,217,196,.10);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-purple{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;border-radius:var(--r-pill);
  border:1px solid rgba(124,92,255,.55);
  background:rgba(124,92,255,.14);
  color:#CFC4FF;font-size:15px;font-weight:600;cursor:pointer;transition:.22s ease;
}
.btn-purple:hover{color:#E4DEFF;background:rgba(124,92,255,.24);transform:translateY(-1px);}

/* ============ 通用 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(47,217,196,.32);
  background:rgba(47,217,196,.10);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
  letter-spacing:.4px;
  margin-bottom:20px;
}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-head h2{margin-bottom:14px;}
.sec-head p{color:var(--text-2);font-size:16px;}
.glass-card{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  box-shadow:var(--shadow-card);
  padding:28px;
  transition:transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.glass-card::before{
  content:"";
  position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  border-top:1px solid rgba(255,255,255,.16);
  -webkit-mask-image:linear-gradient(#000,transparent 42%);
  mask-image:linear-gradient(#000,transparent 42%);
}
.glass-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow-hover);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text-2);
  font-size:12px;
  font-weight:600;
}
.tag-orange{border-color:rgba(255,138,61,.42);background:rgba(255,138,61,.12);color:#FFB583;}
.tag-purple{border-color:rgba(124,92,255,.42);background:rgba(124,92,255,.14);color:#C3B6FF;}
.icon-badge{
  width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(47,217,196,.22),rgba(124,92,255,.22));
  border:1px solid var(--line-hi);
  color:var(--primary);
  font-size:17px;
  flex:0 0 auto;
}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:64px 0 88px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  opacity:.30;
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(7,10,24,.55) 0%, rgba(7,10,24,.88) 58%, rgba(7,10,24,1) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:56px;
  align-items:center;
}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{
  font-size:18px;
  color:var(--text-2);
  max-width:600px;
  margin-bottom:28px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.trustbar{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:0;margin:0;list-style:none;
}
.trustbar li{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.045);
  color:var(--text-2);
  font-size:13px;
}
.trustbar li i{color:var(--primary);font-size:12px;}
.trustbar li strong{color:var(--text);font-weight:600;}
.hero-visual{position:relative;}
.hero-shot{
  border-radius:var(--r-lg);
  border:1px solid var(--line-hi);
  overflow:hidden;
  box-shadow:0 30px 70px -30px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.12);
  background:linear-gradient(160deg, rgba(47,217,196,.16), rgba(124,92,255,.16));
}
.hero-shot img{width:100%;height:auto;aspect-ratio:16/11;object-fit:cover;}
.hero-float{
  position:absolute;
  left:-18px;bottom:-22px;
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;
  border-radius:var(--r-md);
  border:1px solid var(--line-hi);
  background:rgba(12,17,34,.9);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  box-shadow:0 20px 44px -24px rgba(0,0,0,.95);
}
.hero-float .dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(47,217,196,.18);
}
.hero-float span{font-size:13px;color:var(--text-2);}
.hero-float strong{display:block;font-size:15px;color:var(--text);}

/* ============ 下载按钮组 ============ */
.dl-card{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid rgba(47,217,196,.34);
  background:
    radial-gradient(520px 300px at 8% 0%, rgba(47,217,196,.18), transparent 62%),
    radial-gradient(520px 340px at 92% 100%, rgba(124,92,255,.20), transparent 64%),
    rgba(16,22,43,.82);
  box-shadow:0 0 0 1px rgba(47,217,196,.16), 0 30px 70px -34px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.12);
  padding:40px;
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);
  gap:40px;
}
.dl-card h2{margin-bottom:14px;font-size:30px;}
.dl-points{list-style:none;padding:0;margin:22px 0 24px;display:grid;gap:12px;}
.dl-points li{display:flex;gap:12px;align-items:flex-start;color:var(--text-2);font-size:15px;}
.dl-points li i{color:var(--primary);margin-top:6px;font-size:13px;}
.dl-meta{
  display:flex;flex-wrap:wrap;gap:10px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.dl-meta span{
  font-size:13px;color:var(--text-3);
  padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.dl-meta span b{color:var(--text-2);font-weight:600;}
.dl-actions{display:grid;gap:14px;align-content:start;}
.dl-actions .btn-sky,.dl-actions .btn-ghost,.dl-actions .btn-purple{width:100%;}
.qr-box{
  display:flex;align-items:center;gap:16px;
  padding:16px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
}
.qr-img{
  width:140px;height:140px;flex:0 0 140px;
  border-radius:12px;
  background:#fff;
  display:grid;place-items:center;
  color:#070A18;
  font-size:88px;
  line-height:1;
}
.qr-box p{font-size:13px;color:var(--text-2);margin:0;}
.qr-box strong{display:block;color:var(--text);font-size:15px;margin-bottom:6px;}

/* ============ 系统要求 ============ */
.req-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.req-card h3{display:flex;align-items:center;gap:12px;font-size:19px;margin-bottom:20px;}
.req-card dl{margin:0;display:grid;gap:12px;}
.req-card dt{
  font-size:13px;color:var(--text-3);font-weight:500;
  letter-spacing:.3px;
  margin-bottom:2px;
}
.req-card dd{
  margin:0 0 12px;
  font-size:15px;
  color:var(--text);
  padding-bottom:12px;
  border-bottom:1px dashed rgba(255,255,255,.09);
}
.req-card dd:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0;}
.req-card dd small{display:block;color:var(--text-2);font-size:13px;font-weight:400;margin-top:3px;}

/* ============ 时间线 ============ */
.timeline{list-style:none;margin:0;padding:0;position:relative;}
.timeline::before{
  content:"";
  position:absolute;
  left:26px;top:18px;bottom:26px;
  width:1px;
  background:linear-gradient(180deg, rgba(47,217,196,.6), rgba(124,92,255,.35), transparent);
}
.tl-item{position:relative;padding-left:80px;margin-bottom:40px;}
.tl-item:last-child{margin-bottom:0;}
.tl-node{
  position:absolute;left:0;top:0;
  width:54px;height:54px;border-radius:50%;
  display:grid;place-items:center;
  font-size:15px;font-weight:700;
  color:var(--primary);
  border:1px solid rgba(47,217,196,.42);
  background:rgba(12,17,34,.92);
  box-shadow:0 0 0 6px rgba(47,217,196,.07);
}
.tl-body{
  display:grid;
  grid-template-columns:minmax(0,1fr) 260px;
  gap:24px;
  align-items:center;
}
.tl-body h3{margin-bottom:10px;font-size:20px;}
.tl-body p{color:var(--text-2);font-size:15px;}
.tl-shot{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  overflow:hidden;
  background:linear-gradient(150deg, rgba(47,217,196,.12), rgba(124,92,255,.12));
}
.tl-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ============ 提示卡 ============ */
.notice{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.notice-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:22px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
}
.notice-item i{color:var(--primary);font-size:18px;margin-top:4px;}
.notice-item h3{font-size:16px;margin-bottom:6px;}
.notice-item p{font-size:14px;color:var(--text-2);margin:0;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin-inline:auto;}
.faq-acc .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq-acc .accordion-button{
  position:relative;
  background:transparent;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  padding:24px 52px 24px 0;
  box-shadow:none;
  line-height:1.5;
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--primary);
  background:transparent;
  box-shadow:none;
}
.faq-acc .accordion-button:focus{
  box-shadow:none;
  border-color:transparent;
}
.faq-acc .accordion-button::before{
  content:"";
  position:absolute;
  left:-1px;top:18px;bottom:18px;
  width:3px;
  border-radius:3px;
  background:var(--primary);
  opacity:0;
  transform:scaleY(.4);
  transition:.25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1;transform:scaleY(1);}
.faq-acc .accordion-button::after{
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  color:var(--primary);
  background-image:none;
  width:auto;height:auto;
  position:absolute;right:6px;top:50%;
  transform:translateY(-50%);
  transition:transform .25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg);}
.faq-acc .accordion-body{
  color:var(--text-2);
  font-size:15px;
  padding:0 40px 26px 0;
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid rgba(47,217,196,.3);
  overflow:hidden;
  padding:56px 48px;
  background:linear-gradient(120deg, rgba(47,217,196,.14), rgba(124,92,255,.18));
  box-shadow:0 0 0 1px rgba(47,217,196,.12), 0 30px 70px -34px rgba(0,0,0,.95);
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:32px;
  align-items:center;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(520px 320px at 12% 20%, rgba(47,217,196,.22), transparent 62%);
  pointer-events:none;
}
.cta-band h2{font-size:30px;margin-bottom:12px;position:relative;}
.cta-band p{color:var(--text-2);position:relative;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:96px;
  background:rgba(5,8,19,.94);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(47,217,196,.55), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) repeat(3, minmax(0,1fr));
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--text-2);font-size:14px;max-width:360px;}
.footer-col h4{
  font-size:14px;
  color:var(--text-3);
  font-weight:600;
  letter-spacing:.4px;
  margin-bottom:16px;
}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:11px;}
.footer-col a{color:var(--text);font-size:14px;opacity:.86;transition:.2s ease;}
.footer-col a:hover{color:var(--primary);opacity:1;padding-left:3px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;
  padding-top:24px;
}
.footer-bottom p{font-size:13px;color:var(--text-3);margin:0;}
.footer-bottom .tech{color:var(--text-3);opacity:.85;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-inner{gap:40px;}
  .dl-card{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:991px){
  h1{font-size:34px;}
  h2{font-size:27px;}
  .section-pad{padding:64px 0;}
  .section-pad-sm{padding:56px 0;}
  .dock-nav{
    position:fixed;
    inset:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:104px 24px 32px;
    background:rgba(7,10,24,.96);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    z-index:70;
    overflow-y:auto;
  }
  .dock-nav.is-open{display:flex;}
  .dock-nav a{
    font-size:17px;
    padding:16px 18px;
    border-radius:var(--r-md);
    border:1px solid var(--line);
    background:rgba(255,255,255,.035);
  }
  .dock-nav a::after{display:none;}
  .dock-search{display:none;}
  .dock-toggle{display:inline-grid;place-items:center;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero{padding:40px 0 64px;}
  .hero-float{left:auto;right:14px;bottom:-18px;}
  .req-grid{grid-template-columns:1fr;}
  .notice{grid-template-columns:1fr;}
  .tl-body{grid-template-columns:1fr;gap:16px;}
  .cta-band{grid-template-columns:1fr;padding:40px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  body{font-size:15px;}
  .hero-lead{font-size:16px;}
  .dl-card{padding:26px 20px;}
  .glass-card{padding:22px;}
  .dock{padding:8px 10px 8px 14px;gap:10px;}
  .brand-name{font-size:15px;}
  .dock-tools .btn-sky.btn-sm{padding:8px 14px;font-size:13px;}
  .timeline::before{left:20px;}
  .tl-item{padding-left:62px;}
  .tl-node{width:44px;height:44px;font-size:13px;}
  .qr-img{width:120px;height:120px;flex:0 0 120px;font-size:74px;}
  .qr-box{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions .btn-sky,.cta-actions .btn-ghost{width:100%;}
}

/* roulang page: article */
:root{
  --bg:#070A18;
  --bg-deep:#05070F;
  --panel:#10162B;
  --glass:rgba(20,26,51,.66);
  --glass-strong:rgba(16,22,43,.88);
  --sky:#2FD9C4;
  --sky-hover:#59F0DC;
  --sky-press:#1FB3A2;
  --violet:#7C5CFF;
  --orange:#FF8A3D;
  --text:#E7EBF7;
  --muted:#9AA6C4;
  --dim:#6C7693;
  --line:rgba(255,255,255,.10);
  --line-hi:rgba(255,255,255,.18);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.08), 0 18px 40px -24px rgba(0,0,0,.85);
  --shadow-glow:0 0 0 1px rgba(47,217,196,.55), 0 12px 32px -12px rgba(47,217,196,.65);
  --bs-body-bg:#070A18;
  --bs-body-color:#E7EBF7;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-primary:#2FD9C4;
  --bs-link-color:#59F0DC;
  --bs-link-hover-color:#2FD9C4;
  --bs-border-radius:16px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100%;
  color:var(--text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  background-color:var(--bg);
  background-image:
    radial-gradient(960px 540px at 10% -8%, rgba(47,217,196,.16), transparent 62%),
    radial-gradient(820px 480px at 90% 2%, rgba(124,92,255,.18), transparent 60%),
    radial-gradient(680px 440px at 52% 108%, rgba(47,217,196,.09), transparent 66%),
    linear-gradient(180deg,#070A18 0%, #05070F 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(to right, rgba(255,255,255,.028) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(to bottom, rgba(255,255,255,.022) 0 1px, transparent 1px 56px);
  opacity:.9;
}
.site-header,.page-main,.site-footer,.dock-drawer{position:relative;z-index:1}
img{max-width:100%;height:auto;display:block}
a{color:var(--sky-hover);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--sky)}
p{margin:0 0 16px}
h1,h2,h3,h4,h5{color:var(--text);line-height:1.25;margin:0 0 14px;font-weight:700;letter-spacing:.2px}
h1{font-weight:800}
ul,ol{margin:0 0 16px;padding-left:20px}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--sky);outline-offset:2px;border-radius:6px}
.shell{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
/* ============ Dock 导航 ============ */
.site-header{
  position:sticky;
  top:16px;
  z-index:60;
  padding:0 16px;
}
.dock{
  width:min(1120px,92vw);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:18px;
  padding:10px 14px 10px 18px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  transition:padding .25s ease, background .25s ease, box-shadow .25s ease;
}
.dock.is-scrolled{
  padding:6px 12px 6px 16px;
  background:var(--glass-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10), 0 22px 46px -26px rgba(0,0,0,.95);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-weight:700;
  font-size:16px;
  white-space:nowrap;
}
.brand:hover{color:var(--text)}
.brand-mark{
  width:34px;height:34px;
  flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:50%;
  color:#04201C;
  font-size:15px;
  background:linear-gradient(135deg,#2FD9C4,#7C5CFF);
  box-shadow:0 0 18px rgba(47,217,196,.45);
}
.brand-name span{color:var(--sky);margin-left:2px}
.dock-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
  flex:1 1 auto;
}
.dock-nav a{
  position:relative;
  padding:9px 14px;
  border-radius:var(--r-pill);
  color:var(--muted);
  font-size:14.5px;
  font-weight:500;
  transition:color .18s ease, background .18s ease;
}
.dock-nav a::after{
  content:"";
  position:absolute;
  left:50%;bottom:4px;
  width:0;height:2px;
  border-radius:2px;
  background:var(--sky);
  transform:translateX(-50%);
  transition:width .22s ease;
}
.dock-nav a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.dock-nav a:hover::after,.dock-nav a.is-active::after{width:22px}
.dock-nav a.is-active{color:var(--text);background:rgba(47,217,196,.10)}
.dock-tools{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.dock-search{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  min-height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--muted);
  font-size:14px;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.dock-search:hover{color:var(--text);border-color:var(--line-hi);background:rgba(255,255,255,.07)}
.dock-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);
  cursor:pointer;
}
.dock-toggle:hover{border-color:var(--line-hi)}
.btn-sky{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  min-height:44px;
  border:none;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  color:#04201C !important;
  background:linear-gradient(135deg,#2FD9C4,#26C3B0);
  box-shadow:var(--shadow-glow);
  transition:transform .16s ease, filter .16s ease, box-shadow .16s ease;
}
.btn-sky:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(89,240,220,.7),0 16px 38px -12px rgba(47,217,196,.8)}
.btn-sky:active{transform:translateY(1px)}
.btn-sky.btn-sm{padding:9px 18px;min-height:40px;font-size:14px}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  min-height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-hi);
  background:rgba(255,255,255,.045);
  color:var(--text) !important;
  font-size:15px;
  font-weight:600;
  transition:transform .16s ease,border-color .16s ease,background .16s ease;
}
.btn-ghost:hover{border-color:var(--sky);background:rgba(47,217,196,.10);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.dock-drawer{
  position:fixed;
  inset:0;
  z-index:80;
  display:none;
  flex-direction:column;
  gap:6px;
  padding:96px 24px 32px;
  background:rgba(7,10,24,.94);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
}
.dock-drawer.is-open{display:flex}
.dock-drawer a{
  padding:15px 18px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text);
  font-size:16px;
  font-weight:600;
}
.dock-drawer a.is-active{border-color:rgba(47,217,196,.5);color:var(--sky-hover)}
.dock-drawer .drawer-close{
  align-self:flex-end;
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);
}
/* ============ 文章头卡 ============ */
.page-main{padding:34px 0 0}
.article-hero{
  position:relative;
  margin:26px auto 0;
  padding:46px 0 40px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg, rgba(7,10,24,.72), rgba(7,10,24,.94)), url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,217,196,.45),transparent);
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--dim);
  margin-bottom:18px;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--sky-hover)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .current{color:var(--text)}
.badge-sky{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(47,217,196,.34);
  background:rgba(47,217,196,.12);
  color:var(--sky-hover);
  font-size:13px;
  font-weight:600;
  margin-bottom:16px;
}
.badge-violet{
  border-color:rgba(124,92,255,.38);
  background:rgba(124,92,255,.14);
  color:#B6A6FF;
}
.article-title{
  font-size:44px;
  font-weight:800;
  line-height:1.24;
  max-width:900px;
  margin:0 0 20px;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px 18px;
  color:var(--muted);
  font-size:14px;
}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--sky);font-size:13px}
/* ============ 阅读区 ============ */
.article-band{padding:52px 0 12px}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 312px;
  gap:34px;
  align-items:start;
}
.article-main{min-width:0}
.article-card{
  padding:34px 36px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
}
.article-body{max-width:820px;font-size:16.5px;line-height:1.9;color:#DCE2F2}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:26px;
  font-weight:700;
  margin:44px 0 16px;
  padding-left:14px;
  border-left:3px solid var(--sky);
  scroll-margin-top:110px;
}
.article-body h3{
  font-size:20px;
  font-weight:600;
  margin:32px 0 12px;
  color:#EEF2FF;
  scroll-margin-top:110px;
}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px}
.article-body li{margin-bottom:10px;line-height:1.75}
.article-body img{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  margin:22px 0;
}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  border-radius:var(--r-md);
  border-left:3px solid var(--violet);
  background:rgba(124,92,255,.10);
  color:#D9D5FF;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--sky-hover);border-bottom:1px solid rgba(47,217,196,.35)}
.article-body a:hover{border-bottom-color:var(--sky)}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
  color:var(--muted);
}
.article-body th{background:rgba(255,255,255,.04);color:var(--text);font-weight:600}
.article-body code{
  padding:2px 7px;
  border-radius:6px;
  background:rgba(47,217,196,.12);
  color:var(--sky-hover);
  font-size:14px;
}
.empty-state{
  padding:56px 20px;
  text-align:center;
}
.empty-state .empty-icon{
  width:72px;height:72px;
  margin:0 auto 20px;
  display:grid;place-items:center;
  border-radius:50%;
  font-size:26px;
  color:var(--sky);
  border:1px solid rgba(47,217,196,.32);
  background:rgba(47,217,196,.10);
}
.empty-state p{font-size:18px;color:var(--muted);margin-bottom:22px}
.tag-list{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.tag-list a{
  padding:7px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  color:var(--muted);
  font-size:13.5px;
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.tag-list a:hover{border-color:rgba(47,217,196,.5);color:var(--sky-hover);transform:translateY(-2px)}
/* ============ 侧栏 ============ */
.article-side{
  position:sticky;
  top:104px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  padding:22px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.side-card h3{
  font-size:15px;
  font-weight:700;
  margin:0 0 14px;
  display:flex;
  align-items:center;
  gap:8px;
  color:var(--text);
}
.side-card h3 i{color:var(--sky);font-size:13px}
.toc-list{list-style:none;margin:0;padding:0;max-height:340px;overflow:auto}
.toc-list li{margin:0}
.toc-list a{
  display:block;
  padding:7px 0 7px 14px;
  font-size:14px;
  color:var(--muted);
  border-left:2px solid rgba(255,255,255,.08);
  transition:color .18s ease,border-color .18s ease,padding .18s ease;
}
.toc-list a:hover{color:var(--sky-hover);border-left-color:var(--sky);padding-left:18px}
.toc-list .toc-h3 a{padding-left:28px;font-size:13.5px;color:var(--dim)}
.toc-empty{font-size:13.5px;color:var(--dim);margin:0}
.dl-card{
  background-image:linear-gradient(180deg, rgba(20,26,51,.86), rgba(16,22,43,.92));
  border-color:rgba(47,217,196,.28);
}
.dl-card p{font-size:13.5px;color:var(--muted);margin-bottom:16px}
.dl-card .btn-sky{width:100%;margin-bottom:10px}
.dl-card .btn-ghost{width:100%}
.side-points{
  list-style:none;
  margin:0 0 16px;
  padding:0;
  font-size:13.5px;
  color:var(--muted);
}
.side-points li{display:flex;gap:8px;align-items:flex-start;margin-bottom:8px}
.side-points i{color:var(--sky);font-size:12px;margin-top:5px}
.side-links{list-style:none;margin:0;padding:0}
.side-links li + li{margin-top:4px}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:9px 0;
  border-bottom:1px dashed rgba(255,255,255,.07);
  font-size:14px;
  color:var(--muted);
}
.side-links a:hover{color:var(--sky-hover)}
/* ============ 相关推荐 ============ */
.related-band{padding:74px 0 20px}
.band-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px;
  margin-bottom:26px;
}
.band-head h2{font-size:28px;margin:0}
.band-head p{margin:8px 0 0;color:var(--muted);font-size:14.5px}
.band-head .more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  color:var(--sky-hover);
}
.band-head .more:hover{gap:12px}
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.rel-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-hi);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12), 0 26px 50px -26px rgba(0,0,0,.95);
}
.rel-thumb{
  position:relative;
  aspect-ratio:16 / 9;
  background:linear-gradient(135deg,#141B36,#0A0F22);
  overflow:hidden;
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.05)}
.rel-thumb .badge-sky{
  position:absolute;
  left:12px;top:12px;
  margin:0;
  padding:4px 12px;
  font-size:12px;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.rel-body{padding:18px 20px 20px}
.rel-body h3{
  font-size:16.5px;
  font-weight:600;
  margin:0 0 10px;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-body p{
  font-size:13.8px;
  color:var(--muted);
  margin:0 0 16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--dim);
  border-top:1px solid var(--line);
  padding-top:12px;
}
.rel-foot i{color:var(--sky);transition:transform .2s ease}
.rel-card:hover .rel-foot i{transform:translateX(4px)}
/* ============ 上下篇 ============ */
.postnav{padding:26px 0 0}
.postnav-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.postnav-card{
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 22px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  transition:border-color .18s ease,transform .18s ease;
}
.postnav-card:hover{border-color:rgba(47,217,196,.45);transform:translateY(-3px)}
.postnav-card .pn-icon{
  width:42px;height:42px;
  flex:0 0 42px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--sky);
  background:rgba(47,217,196,.08);
}
.postnav-card .pn-label{font-size:12.5px;color:var(--dim);display:block;margin-bottom:4px}
.postnav-card strong{font-size:15px;color:var(--text);font-weight:600;line-height:1.5}
.postnav-card.align-end{text-align:right;flex-direction:row-reverse}
/* ============ 下载 CTA ============ */
.cta-band{padding:80px 0 96px}
.cta-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid rgba(47,217,196,.30);
  background-image:linear-gradient(120deg, rgba(9,14,30,.92) 0%, rgba(11,17,36,.86) 55%, rgba(9,14,30,.94) 100%), url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  box-shadow:0 0 0 1px rgba(47,217,196,.14), 0 40px 80px -46px rgba(47,217,196,.55);
  padding:44px;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:34px;
  align-items:center;
}
.cta-card::before{
  content:"";
  position:absolute;
  width:520px;height:520px;
  right:-160px;top:-220px;
  background:radial-gradient(circle, rgba(124,92,255,.34), transparent 64%);
  pointer-events:none;
}
.cta-card h2{font-size:30px;margin:0 0 14px}
.cta-card .lead{color:var(--muted);font-size:15.5px;margin:0 0 20px;max-width:560px}
.cta-points{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px 22px}
.cta-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--muted)}
.cta-points i{color:var(--sky)}
.cta-actions{display:flex;flex-direction:column;gap:12px;position:relative;z-index:1}
.cta-meta{
  display:flex;flex-wrap:wrap;gap:8px;
  margin-top:4px;
}
.pill{
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--muted);
  font-size:12.5px;
}
.pill.warn{border-color:rgba(255,138,61,.4);color:var(--orange);background:rgba(255,138,61,.10)}
.qr-box{
  display:flex;
  align-items:center;
  gap:14px;
  padding:12px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
}
.qr-box .qr{
  width:76px;height:76px;
  flex:0 0 76px;
  border-radius:12px;
  background:#fff;
  display:grid;place-items:center;
  color:#070A18;
  font-size:26px;
}
.qr-box span{font-size:13px;color:var(--muted)}
/* ============ FAQ ============ */
.faq-band{padding:0 0 84px}
.faq-wrap{max-width:840px;margin:0 auto}
.accordion-item{
  background:transparent;
  border:none;
  border-bottom:1px solid var(--line);
}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16.5px;
  font-weight:600;
  padding:22px 44px 22px 0;
  box-shadow:none;
  position:relative;
}
.accordion-button:not(.collapsed){color:var(--sky-hover);background:transparent;box-shadow:none}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-button::after{
  content:"+";
  background-image:none;
  font-size:22px;
  font-weight:400;
  color:var(--sky);
  position:absolute;
  right:6px;
  top:50%;
  transform:translateY(-50%);
  width:auto;height:auto;
  transition:transform .22s ease;
}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg)}
.accordion-item::before{
  content:"";
  position:absolute;
  left:-14px;
  top:22px;
  bottom:22px;
  width:3px;
  border-radius:3px;
  background:var(--sky);
  opacity:0;
  transition:opacity .22s ease;
}
.accordion-item{position:relative}
.accordion-item:has(.accordion-button:not(.collapsed))::before{opacity:1}
.accordion-body{
  padding:0 40px 24px 0;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
}
/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px;
  padding:56px 0 26px;
  background:rgba(5,7,15,.72);
  border-top:1px solid var(--line);
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(124,92,255,.5),rgba(47,217,196,.5),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:34px;
}
.footer-brand p{color:var(--muted);font-size:14px;margin:16px 0 0;max-width:360px}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--dim);
  margin:0 0 14px;
  letter-spacing:.4px;
}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--text);font-size:14px;opacity:.86}
.footer-col a:hover{color:var(--sky-hover);opacity:1}
.footer-bottom{
  margin-top:38px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--dim)}
/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-title{font-size:38px}
}
@media (max-width:991.98px){
  .dock-nav{display:none}
  .dock-search span{display:none}
  .dock-search{padding:9px 14px}
  .dock-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;order:2}
  .article-title{font-size:32px}
  .article-card{padding:26px 22px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-card{grid-template-columns:minmax(0,1fr);padding:34px 26px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-hero{padding:36px 0 32px}
}
@media (max-width:575.98px){
  .shell{padding:0 18px}
  .dock{width:94vw;gap:10px;padding:8px 10px 8px 14px}
  .brand-name{font-size:15px}
  .dock-tools .btn-sky{padding:8px 14px;min-height:40px;font-size:13.5px}
  .dock-tools .btn-sky i{display:none}
  .page-main{padding-top:18px}
  .article-hero{margin-top:14px}
  .article-title{font-size:26px}
  .crumb{font-size:12.5px}
  .article-band{padding:32px 0 8px}
  .article-body{font-size:16px}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .postnav-grid{grid-template-columns:minmax(0,1fr)}
  .postnav-card.align-end{flex-direction:row;text-align:left}
  .cta-band{padding:56px 0 64px}
  .cta-card h2{font-size:24px}
  .cta-actions .btn-sky,.cta-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .footer-bottom{flex-direction:column}
  .band-head h2{font-size:23px}
}

/* roulang page: category2 */
:root{
  --sky-bg:#070A18;
  --sky-panel:#10162B;
  --sky-glass:rgba(20,26,51,.66);
  --sky-primary:#2FD9C4;
  --sky-primary-hover:#59F0DC;
  --sky-primary-active:#1FB3A2;
  --sky-violet:#7C5CFF;
  --sky-orange:#FF8A3D;
  --text:#E7EBF7;
  --text-2:#9AA6C4;
  --text-3:#6C7693;
  --line:rgba(255,255,255,.10);
  --line-hi:rgba(255,255,255,.18);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.08), 0 18px 40px -24px rgba(0,0,0,.85);
  --shadow-hover:inset 0 1px 0 rgba(255,255,255,.14), 0 26px 52px -26px rgba(0,0,0,.95);
  --glow:0 0 0 1px rgba(47,217,196,.6), 0 10px 30px -10px rgba(47,217,196,.7);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(900px 620px at 10% -8%, rgba(47,217,196,.14), transparent 62%),
    radial-gradient(820px 560px at 94% 6%, rgba(124,92,255,.16), transparent 64%),
    radial-gradient(720px 520px at 50% 108%, rgba(47,217,196,.07), transparent 62%),
    var(--sky-bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  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:64px 64px;
  mask-image:radial-gradient(circle at 50% 20%, rgba(0,0,0,.9), transparent 80%);
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--sky-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--sky-primary-hover);}
button{font-family:inherit;}
h1,h2,h3,h4{line-height:1.25;margin:0;font-weight:700;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--sky-primary);outline-offset:2px;border-radius:6px;}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.sec{padding:88px 0;position:relative;z-index:1;}
.sec-tight{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--sky-primary);
  border:1px solid rgba(47,217,196,.35);
  background:rgba(47,217,196,.08);
  border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:18px;
}
.sec-head h2{font-size:36px;font-weight:700;}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:16px;}
.muted{color:var(--text-2);}
.tiny{color:var(--text-3);font-size:13px;}

/* ============ header / dock ============ */
.site-header{position:sticky;top:16px;z-index:80;padding:0 16px;}
.dock{
  width:min(1120px,92vw);
  margin:0 auto;
  display:flex;align-items:center;gap:20px;
  padding:12px 18px;
  border-radius:var(--r-pill);
  background:rgba(16,22,43,.62);
  border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  box-shadow:var(--shadow-card);
  transition:padding .3s ease, background .3s ease, box-shadow .3s ease;
}
.dock.is-scrolled{padding:8px 16px;background:rgba(10,15,32,.88);box-shadow:var(--shadow-hover);}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--sky-primary),var(--sky-violet));
  color:#06131A;font-size:15px;
  box-shadow:0 0 0 1px rgba(255,255,255,.14), 0 8px 22px -10px rgba(47,217,196,.8);
}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.4px;white-space:nowrap;}
.brand-name span{color:var(--sky-primary);}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.dock-nav a{
  position:relative;
  color:var(--text-2);font-size:14px;font-weight:500;
  padding:9px 14px;border-radius:var(--r-pill);
  white-space:nowrap;transition:color .2s ease, background .2s ease;
}
.dock-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--sky-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.dock-nav a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.dock-nav a:hover::after{transform:scaleX(1);}
.dock-nav a.is-active{color:var(--text);background:rgba(47,217,196,.10);}
.dock-nav a.is-active::after{transform:scaleX(1);}
.dock-tools{display:flex;align-items:center;gap:10px;margin-left:8px;}
.dock-search{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text-3);font-size:13px;
  padding:9px 16px;border-radius:var(--r-pill);
  transition:border-color .2s ease, color .2s ease, box-shadow .2s ease;
}
.dock-search:hover{color:var(--text-2);border-color:var(--line-hi);}
.dock-search:focus-visible{box-shadow:0 0 0 4px rgba(47,217,196,.18);}
.dock-toggle{
  display:none;
  width:44px;height:44px;border-radius:14px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text);font-size:16px;
  align-items:center;justify-content:center;
  cursor:pointer;
}
.btn-sky{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--sky-primary);
  color:#04211C;font-weight:600;font-size:15px;
  border:0;border-radius:var(--r-pill);
  padding:13px 26px;min-height:46px;
  box-shadow:var(--glow);
  transition:filter .2s ease, transform .12s ease, box-shadow .25s ease;
  cursor:pointer;
}
.btn-sky:hover{filter:brightness(1.08);color:#04211C;box-shadow:0 0 0 1px rgba(47,217,196,.75), 0 14px 36px -10px rgba(47,217,196,.85);}
.btn-sky:active{transform:translateY(1px);background:var(--sky-primary-active);}
.btn-sky.btn-sm{padding:10px 18px;font-size:14px;min-height:40px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line-hi);
  color:var(--text);font-weight:600;font-size:15px;
  border-radius:var(--r-pill);
  padding:13px 26px;min-height:46px;
  transition:background .2s ease, border-color .2s ease, transform .12s ease;
  cursor:pointer;
}
.btn-ghost:hover{background:rgba(47,217,196,.10);border-color:rgba(47,217,196,.5);color:var(--text);}
.btn-ghost:active{transform:translateY(1px);}
.btn-ghost.btn-sm{padding:10px 18px;font-size:14px;min-height:40px;}
.nav-drawer{
  position:fixed;inset:0;z-index:85;
  background:rgba(7,10,24,.92);
  backdrop-filter:blur(20px) saturate(150%);
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  padding:96px 24px 32px;
  display:none;flex-direction:column;gap:10px;
}
.nav-drawer.is-open{display:flex;}
.nav-drawer a{
  color:var(--text);font-size:18px;font-weight:600;
  padding:14px 18px;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--sky-glass);
}
.nav-drawer a.is-active{color:var(--sky-primary);border-color:rgba(47,217,196,.45);}
.nav-drawer .drawer-close{
  position:absolute;top:26px;right:24px;
  width:44px;height:44px;border-radius:14px;
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  color:var(--text);font-size:16px;cursor:pointer;
}

/* ============ breadcrumb ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--sky-primary);}
.crumb i{font-size:10px;}

/* ============ hero ============ */
.hero{position:relative;padding:56px 0 72px;overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.26;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.9) 0%, rgba(0,0,0,.35) 65%, transparent 100%);
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.9) 0%, rgba(0,0,0,.35) 65%, transparent 100%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.35fr .95fr;gap:56px;align-items:center;
}
.hero h1{font-size:48px;font-weight:800;letter-spacing:.4px;}
.hero h1 em{font-style:normal;color:var(--sky-primary);}
.hero-sub{margin-top:20px;font-size:18px;color:var(--text-2);max-width:620px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.trust-bar{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:7px 14px;
}
.pill i{color:var(--sky-primary);font-size:12px;}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--sky-orange);}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px;max-width:560px;}
.stat{
  background:var(--sky-glass);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--shadow-card);
}
.stat b{display:block;font-size:24px;font-weight:800;color:var(--sky-primary);font-variant-numeric:tabular-nums;}
.stat span{font-size:13px;color:var(--text-3);}
.hero-visual{position:relative;}
.phone-frame{
  position:relative;
  border-radius:32px;
  padding:12px;
  background:linear-gradient(160deg, rgba(47,217,196,.35), rgba(124,92,255,.22));
  box-shadow:0 40px 80px -40px rgba(0,0,0,.95);
}
.phone-frame img{border-radius:24px;width:100%;}
.float-card{
  position:absolute;left:-28px;bottom:36px;
  background:rgba(16,22,43,.9);
  border:1px solid var(--line-hi);
  border-radius:var(--r-md);
  padding:14px 18px;
  box-shadow:var(--shadow-hover);
  backdrop-filter:blur(14px);
}
.float-card strong{display:block;font-size:14px;color:var(--text);}
.float-card span{font-size:12px;color:var(--text-3);}

/* ============ cards ============ */
.g-card{
  background:var(--sky-glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  height:100%;
}
.g-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.32), transparent);
}
.g-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow-hover);}
.icon-box{
  width:46px;height:46px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(47,217,196,.12);
  border:1px solid rgba(47,217,196,.3);
  color:var(--sky-primary);font-size:18px;
  margin-bottom:16px;
}
.icon-box.violet{background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.34);color:#A78BFF;}
.icon-box.orange{background:rgba(255,138,61,.13);border-color:rgba(255,138,61,.32);color:var(--sky-orange);}
.g-card h3{font-size:20px;font-weight:600;}
.g-card p{margin-top:12px;color:var(--text-2);font-size:15px;}
.feature-big{
  background:
    radial-gradient(420px 320px at 88% 8%, rgba(47,217,196,.16), transparent 66%),
    var(--sky-glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--shadow-card);
  height:100%;
  position:relative;
  overflow:hidden;
  transition:transform .25s ease, box-shadow .25s ease;
}
.feature-big:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.feature-big h3{font-size:26px;margin-top:6px;}
.feature-big p{margin-top:14px;color:var(--text-2);}
.feature-big ul{margin-top:22px;display:grid;gap:12px;}
.feature-big ul li{display:flex;gap:10px;font-size:15px;color:var(--text-2);}
.feature-big ul li i{color:var(--sky-primary);margin-top:6px;font-size:12px;}
.feature-big img{margin-top:26px;border-radius:var(--r-md);border:1px solid var(--line);width:100%;}
.row-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--sky-glass);border:1px solid var(--line);
  border-radius:var(--r-md);padding:20px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  height:100%;
}
.row-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow-hover);}
.row-card .icon-box{margin-bottom:0;flex:0 0 auto;width:42px;height:42px;font-size:16px;}
.row-card h3{font-size:17px;font-weight:600;}
.row-card p{margin-top:8px;font-size:14px;color:var(--text-2);}
.narrow-card{
  background:linear-gradient(160deg, rgba(124,92,255,.16), rgba(20,26,51,.7));
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  height:100%;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease, box-shadow .25s ease;
}
.narrow-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.narrow-card h3{font-size:16px;}
.narrow-card p{margin-top:10px;font-size:14px;color:var(--text-2);}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(47,217,196,.12);
  border:1px solid rgba(47,217,196,.3);
  color:var(--sky-primary);
}
.badge-soft.violet{background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.34);color:#A78BFF;}
.badge-soft.orange{background:rgba(255,138,61,.13);border-color:rgba(255,138,61,.32);color:var(--sky-orange);}

/* ============ 截图带 ============ */
.shot-strip{position:relative;}
.shot-track{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
}
.shot-card{
  background:var(--sky-panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease, border-color .25s ease;
}
.shot-card:hover{transform:translateY(-4px);border-color:var(--line-hi);}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.shot-body{padding:20px 22px 24px;}
.shot-body h3{font-size:17px;}
.shot-body p{margin-top:10px;font-size:14px;color:var(--text-2);}
.strip-note{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 三端对比 ============ */
.plat-card{
  background:var(--sky-glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  height:100%;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.plat-card:hover{transform:translateY(-4px);border-color:rgba(47,217,196,.35);box-shadow:var(--shadow-hover);}
.plat-card.is-featured{border-color:rgba(47,217,196,.42);background:linear-gradient(180deg, rgba(47,217,196,.10), rgba(20,26,51,.7));}
.plat-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.plat-head b{font-size:18px;font-weight:700;}
.spec-list{display:grid;gap:14px;margin:0;}
.spec-list > div{display:flex;justify-content:space-between;gap:16px;border-bottom:1px dashed rgba(255,255,255,.08);padding-bottom:12px;}
.spec-list dt{font-size:14px;font-weight:600;color:var(--text);}
.spec-list dd{margin:0;font-size:14px;color:var(--text-2);text-align:right;}
.spec-list > div:last-child{border-bottom:0;padding-bottom:0;}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:0;display:grid;gap:28px;max-width:860px;margin:0 auto;}
.tl-item{
  display:grid;grid-template-columns:64px 1fr;gap:22px;
  align-items:flex-start;
  background:var(--sky-glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px 24px;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease, border-color .25s ease;
}
.tl-item:hover{transform:translateY(-4px);border-color:var(--line-hi);}
.tl-num{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;color:var(--sky-primary);
  background:rgba(47,217,196,.10);
  border:1px solid rgba(47,217,196,.3);
  font-variant-numeric:tabular-nums;
}
.tl-item h3{font-size:18px;}
.tl-item p{margin-top:8px;font-size:14px;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;--bs-accordion-color:var(--text);--bs-accordion-btn-color:var(--text);--bs-accordion-active-color:var(--sky-primary);--bs-accordion-active-bg:transparent;--bs-accordion-btn-focus-box-shadow:none;}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.accordion-button{
  background:transparent;color:var(--text);
  font-size:17px;font-weight:600;
  padding:22px 8px;
  border-radius:0;
  transition:color .2s ease, box-shadow .2s ease, padding .2s ease;
}
.accordion-button:not(.collapsed){color:var(--sky-primary);box-shadow:inset 3px 0 0 var(--sky-primary);padding-left:20px;}
.accordion-button::after{
  content:"+";
  background-image:none !important;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;color:var(--sky-primary);
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{padding:0 8px 24px;color:var(--text-2);font-size:15px;}

/* ============ CTA ============ */
.cta-card{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid rgba(47,217,196,.32);
  background:
    radial-gradient(620px 420px at 12% 0%, rgba(47,217,196,.22), transparent 62%),
    radial-gradient(520px 380px at 96% 100%, rgba(124,92,255,.22), transparent 62%),
    rgba(16,22,43,.8);
  padding:48px;
  box-shadow:0 0 0 1px rgba(47,217,196,.16), 0 40px 80px -46px rgba(47,217,196,.6);
  overflow:hidden;
}
.cta-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;position:relative;z-index:1;}
.cta-card h2{font-size:34px;}
.cta-card > * p{color:var(--text-2);}
.cta-list{margin-top:24px;display:grid;gap:12px;}
.cta-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2);}
.cta-list li i{color:var(--sky-primary);margin-top:6px;font-size:12px;}
.btn-matrix{display:flex;flex-direction:column;gap:14px;}
.btn-matrix .btn-sky,.btn-matrix .btn-ghost{width:100%;}
.qr-card{
  display:flex;gap:18px;align-items:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:16px;
}
.qr-box{
  width:110px;height:110px;border-radius:12px;background:#FFFFFF;
  display:flex;align-items:center;justify-content:center;
  color:#10162B;font-size:12px;font-weight:700;text-align:center;line-height:1.5;
  flex:0 0 auto;
}
.qr-card strong{display:block;font-size:15px;}
.qr-card span{font-size:13px;color:var(--text-3);}

/* ============ footer ============ */
.site-footer{
  margin-top:40px;
  background:rgba(6,9,20,.9);
  border-top:1px solid rgba(255,255,255,.06);
  padding:64px 0 28px;
  position:relative;z-index:1;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(47,217,196,.45), transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{margin-top:16px;color:var(--text-3);font-size:14px;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-3);margin-bottom:16px;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:var(--text-2);font-size:14px;}
.footer-col a:hover{color:var(--sky-primary);}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
}
.footer-bottom p{font-size:13px;color:var(--text-3);}
.footer-bottom .tech{color:#5B6480;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero h1{font-size:40px;}
  .sec-head h2{font-size:30px;}
  .cta-card h2{font-size:28px;}
}
@media (max-width:991.98px){
  .dock-nav,.dock-search{display:none;}
  .dock-toggle{display:inline-flex;}
  .dock{gap:12px;justify-content:space-between;}
  .hero{padding:40px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:34px;}
  .hero-sub{font-size:16px;}
  .float-card{left:8px;bottom:14px;}
  .sec{padding:64px 0;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .cta-card{padding:32px;}
  .shot-track{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  .shell{padding:0 18px;}
  .site-header{padding:0 10px;top:10px;}
  .dock{width:100%;padding:10px 12px;}
  .brand-name{font-size:15px;}
  .brand-mark{width:30px;height:30px;border-radius:10px;font-size:13px;}
  .hero h1{font-size:27px;}
  .hero h1 br{display:none;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn-sky,.hero-cta .btn-ghost{width:100%;}
  .hero-stats{grid-template-columns:1fr;gap:12px;}
  .sec-head h2{font-size:24px;}
  .sec{padding:48px 0;}
  .g-card,.feature-big,.plat-card{padding:22px;}
  .shot-track{grid-template-columns:1fr;}
  .tl-item{grid-template-columns:1fr;gap:14px;padding:20px;}
  .accordion-button{font-size:15.5px;padding:18px 4px;}
  .accordion-button:not(.collapsed){padding-left:14px;}
  .cta-card{padding:24px;}
  .cta-card h2{font-size:22px;}
  .qr-card{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .spec-list > div{flex-direction:column;gap:4px;}
  .spec-list dd{text-align:left;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg:#070A18;
  --panel:#10162B;
  --glass:rgba(20,26,51,.66);
  --glass-strong:rgba(16,22,43,.86);
  --primary:#2FD9C4;
  --primary-h:#59F0DC;
  --primary-a:#1FB3A2;
  --violet:#7C5CFF;
  --orange:#FF8A3D;
  --text:#E7EBF7;
  --muted:#9AA6C4;
  --dim:#6C7693;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-card:inset 0 1px 0 rgba(255,255,255,.08),0 18px 40px -24px rgba(0,0,0,.85);
  --sh-glow:0 0 0 1px rgba(47,217,196,.6),0 10px 30px -10px rgba(47,217,196,.7);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --bs-body-bg:var(--bg);
  --bs-body-color:var(--text);
  --bs-border-color:var(--line);
  --bs-border-radius:var(--r-md);
  --bs-link-color:var(--primary);
  --bs-link-hover-color:var(--primary-h);
  --bs-font-sans-serif:var(--font);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 10% -6%,rgba(47,217,196,.16),transparent 62%),
    radial-gradient(760px 520px at 92% 2%,rgba(124,92,255,.18),transparent 60%),
    radial-gradient(760px 620px at 50% 108%,rgba(47,217,196,.08),transparent 66%);
  background-attachment:fixed;
  overflow-x:hidden;
  font-variant-numeric:tabular-nums;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(120% 80% at 50% 0%,#000 0%,transparent 70%);
  mask-image:radial-gradient(120% 80% at 50% 0%,#000 0%,transparent 70%);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary-h)}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;color:var(--text)}
h1{font-weight:800}
h2{font-weight:700}
h3{font-weight:600}
p{margin:0}
ul{margin:0}
::selection{background:rgba(47,217,196,.3);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{position:relative;z-index:1;padding:88px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,2.6vw,32px)}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85}

/* ---------- Dock 导航 ---------- */
.site-header{position:sticky;top:0;z-index:120;padding:16px 0 0}
.dock{
  width:min(1120px,92vw);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:18px;
  padding:10px 14px 10px 18px;
  border-radius:var(--r-pill);
  background:rgba(16,22,43,.72);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 18px 40px -24px rgba(0,0,0,.85);
  transition:padding .28s ease,background .28s ease,box-shadow .28s ease;
}
.dock.is-scrolled{padding:7px 12px 7px 16px;background:rgba(8,12,26,.92);box-shadow:inset 0 1px 0 rgba(255,255,255,.10),0 22px 46px -22px rgba(0,0,0,.95)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary-h),var(--violet));
  color:#04161a;font-size:15px;
  box-shadow:0 0 0 1px rgba(47,217,196,.5),0 8px 22px -10px rgba(47,217,196,.85);
}
.brand-name{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.01em;line-height:1}
.brand-name span{color:var(--primary);margin-left:2px;font-weight:700}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.dock-nav a{
  position:relative;
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.dock-nav a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.dock-nav a.is-active{color:var(--text);background:rgba(47,217,196,.10)}
.dock-nav a.is-active::after{
  content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 8px var(--primary);
}
.dock-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.dock-search{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:9px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--muted);font-size:13px;cursor:pointer;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.dock-search:hover{color:var(--text);background:rgba(255,255,255,.09);border-color:var(--line-strong)}
.dock-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  color:var(--text);font-size:16px;cursor:pointer;
}

/* ---------- 按钮 ---------- */
.btn-sky{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 22px;border:0;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:#04161a;
  background:linear-gradient(135deg,var(--primary-h),var(--primary));
  box-shadow:var(--sh-glow);
  cursor:pointer;
  transition:transform .2s ease,filter .2s ease,box-shadow .2s ease;
}
.btn-sky:hover{color:#04161a;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(89,240,220,.75),0 16px 38px -12px rgba(47,217,196,.85)}
.btn-sky:active{transform:translateY(1px)}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 22px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.04);border:1px solid var(--line-strong);
  color:var(--text);font-size:15px;font-weight:600;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-ghost:hover{color:var(--primary-h);background:rgba(255,255,255,.09);border-color:rgba(47,217,196,.5);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}

/* ---------- Hero ---------- */
.hero{position:relative;z-index:1;padding:56px 0 88px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.24;
  -webkit-mask-image:radial-gradient(120% 90% at 72% 8%,#000 0%,transparent 74%);
  mask-image:radial-gradient(120% 90% at 72% 8%,#000 0%,transparent 74%);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg,rgba(7,10,24,.30) 0%,rgba(7,10,24,.86) 72%,var(--bg) 100%);
}
.hero .shell{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:20px}
.crumbs a{color:var(--muted);border-bottom:1px solid transparent;padding-bottom:1px}
.crumbs a:hover{color:var(--primary-h);border-bottom-color:var(--primary-h)}
.crumbs .sep{color:var(--dim)}
.crumbs .current{color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(47,217,196,.10);border:1px solid rgba(47,217,196,.28);
  color:var(--primary-h);font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero h1{font-size:clamp(28px,4vw,46px);letter-spacing:-.01em}
.hero-sub{margin:18px 0 28px;max-width:56ch;font-size:17px;line-height:1.85;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;padding:0;list-style:none;font-size:13.5px;color:var(--muted)}
.hero-facts li{display:inline-flex;align-items:center;gap:8px}
.hero-facts i{color:var(--primary)}
.hero-visual{position:relative}
.phone-frame{
  margin:0;padding:10px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(47,217,196,.22),rgba(124,92,255,.18));
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
.phone-frame img{width:100%;border-radius:18px}
.hero-badge{
  position:absolute;left:-14px;bottom:26px;
  padding:10px 18px;border-radius:var(--r-pill);
  background:rgba(10,14,30,.92);border:1px solid rgba(47,217,196,.42);
  color:var(--primary-h);font-size:13px;font-weight:700;
  box-shadow:0 12px 30px -14px rgba(0,0,0,.9);
}

/* ---------- 教程主体 ---------- */
.tut-layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:56px;align-items:start}
.toc{
  position:sticky;top:104px;
  padding:24px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
.toc-title{margin-bottom:14px;font-size:12.5px;letter-spacing:.1em;color:var(--dim);font-weight:600}
.toc-list{display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:flex;align-items:baseline;gap:10px;
  padding:10px 12px;border-radius:12px;border-left:2px solid transparent;
  font-size:14px;color:var(--muted);
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.toc-list a span{font-size:12px;font-weight:700;color:var(--dim)}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.toc-list a.is-active{color:var(--text);background:rgba(47,217,196,.10);border-left-color:var(--primary)}
.toc-list a.is-active span{color:var(--primary)}
.toc-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  margin-top:20px;min-height:44px;padding:12px;
  border-radius:var(--r-pill);font-size:14px;font-weight:600;color:#04161a;
  background:linear-gradient(135deg,var(--primary-h),var(--primary));
  box-shadow:0 8px 24px -12px rgba(47,217,196,.9);
}
.toc-cta:hover{color:#04161a;filter:brightness(1.08)}

.tut-content{display:flex;flex-direction:column;gap:64px}
.step-head{display:flex;align-items:center;gap:16px;margin-bottom:24px}
.step-num{
  flex:0 0 auto;width:52px;height:52px;border-radius:16px;
  display:grid;place-items:center;
  font-size:18px;font-weight:800;color:var(--primary-h);
  background:rgba(47,217,196,.10);border:1px solid rgba(47,217,196,.28);
}
.step-head h2{font-size:clamp(20px,2.2vw,26px);line-height:1.35}
.step-grid{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;
  padding:28px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
.step-grid::before{
  content:"";position:absolute;inset:0 0 auto;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.step-grid.is-reverse .step-text{order:2}
.step-grid.is-reverse .step-media{order:1}
.step-text p{margin-bottom:14px;font-size:15.5px;line-height:1.85;color:var(--muted)}
.step-text p strong{color:var(--text);font-weight:600}
.check-list{display:flex;flex-direction:column;gap:10px;padding:0;list-style:none}
.check-list li{position:relative;padding-left:26px;font-size:14.5px;line-height:1.7;color:var(--muted)}
.check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;font-size:13px;color:var(--primary);
}
.step-media{margin:0}
.step-media img{width:100%;border-radius:var(--r-md);border:1px solid var(--line)}
.step-end{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;padding-top:4px}

/* ---------- 卡点提示 ---------- */
.tip-band-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.tip-band-list .tip-band:first-child{grid-column:span 2}
.tip-band{
  display:flex;gap:18px;align-items:flex-start;
  padding:26px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--sh-card);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.tip-band:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12),0 26px 50px -26px rgba(0,0,0,.95);
}
.tip-icon{
  flex:0 0 auto;width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;font-size:18px;
  color:var(--violet);background:rgba(124,92,255,.12);border:1px solid rgba(124,92,255,.28);
}
.tip-band h3{margin-bottom:8px;font-size:17px}
.tip-band p{font-size:14.5px;line-height:1.8;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent}
.accordion-item{
  margin-bottom:14px;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-md)!important;
  box-shadow:var(--sh-card);
}
.accordion-button{
  padding:20px 22px;font-size:16px;font-weight:600;color:var(--text);
  background:transparent;border:0;box-shadow:none!important;
  border-radius:var(--r-md)!important;
}
.accordion-button:not(.collapsed){
  color:var(--primary-h);
  background:rgba(47,217,196,.06);
  box-shadow:inset 3px 0 0 var(--primary)!important;
}
.accordion-button::after{
  content:"+";background-image:none;
  display:grid;place-items:center;
  width:28px;height:28px;margin-left:16px;
  border-radius:50%;border:1px solid var(--line-strong);
  font-size:17px;font-weight:400;line-height:1;color:var(--muted);
  transition:transform .25s ease,color .25s ease,border-color .25s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--primary);border-color:rgba(47,217,196,.55)}
.accordion-body{padding:18px 22px 22px;border-top:1px solid var(--line);font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;
  padding:48px;border-radius:var(--r-lg);
  background:rgba(16,22,43,.84);
  border:1px solid rgba(47,217,196,.30);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),0 30px 60px -30px rgba(0,0,0,.9);
}
.cta-card::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:140%;z-index:0;
  background:
    radial-gradient(closest-side,rgba(47,217,196,.22),transparent 72%),
    radial-gradient(closest-side at 78% 46%,rgba(124,92,255,.20),transparent 72%);
}
.cta-card > *{position:relative;z-index:1}
.cta-card h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.cta-card p{font-size:15.5px;line-height:1.85;color:var(--muted)}
.cta-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.chip{
  padding:6px 13px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:12.5px;color:var(--muted);
}
.chip.is-orange{color:var(--orange);border-color:rgba(255,138,61,.35);background:rgba(255,138,61,.10)}
.cta-actions{display:flex;flex-direction:column;gap:12px}
.cta-actions .btn-sky,.cta-actions .btn-ghost{width:100%}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:40px;padding:64px 0 32px;
  background:rgba(6,9,20,.86);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,217,196,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{max-width:34ch;font-size:14px;line-height:1.85;color:var(--muted)}
.footer-col h4{margin-bottom:16px;font-size:14px;font-weight:600;letter-spacing:.04em;color:var(--dim)}
.footer-col ul{display:flex;flex-direction:column;gap:11px;padding:0;list-style:none}
.footer-col a{font-size:14px;color:var(--text);opacity:.82}
.footer-col a:hover{opacity:1;color:var(--primary-h)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
}
.footer-bottom p{font-size:13px;color:var(--dim)}
.footer-bottom .tech{color:#5a6480}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:90;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(16,22,43,.92);border:1px solid var(--line-strong);
  color:var(--primary-h);font-size:16px;cursor:pointer;
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease,transform .25s ease,background .25s ease;
}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{background:rgba(47,217,196,.16);transform:translateY(-3px)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .dock{gap:12px}
  .dock-nav a{padding:9px 11px;font-size:13.5px}
  .tut-layout{grid-template-columns:236px minmax(0,1fr);gap:40px}
}
@media (max-width:991.98px){
  .dock{width:min(1120px,94vw);padding:8px 10px 8px 14px;gap:10px}
  .dock-nav{
    position:fixed;inset:0;z-index:130;
    display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:10px;
    margin:0;padding:90px 32px 40px;
    background:rgba(7,10,24,.96);
    -webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
  }
  .dock-nav.is-open{opacity:1;visibility:visible;transform:none}
  .dock-nav a{font-size:18px;padding:14px 18px;border-radius:14px;text-align:center}
  .dock-nav a.is-active::after{display:none}
  .dock-toggle{display:inline-grid;place-items:center}
  .hero{padding:40px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-badge{left:12px;bottom:16px}
  .tut-layout{grid-template-columns:1fr;gap:32px}
  .toc{position:static;top:auto;padding:20px}
  .toc-list{flex-direction:row;gap:8px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .toc-list a{flex:0 0 auto;border-left:0;border-bottom:2px solid transparent;border-radius:12px}
  .toc-list a.is-active{border-left:0;border-bottom-color:var(--primary)}
  .tip-band-list{grid-template-columns:1fr}
  .tip-band-list .tip-band:first-child{grid-column:auto}
  .cta-card{grid-template-columns:1fr;gap:28px;padding:32px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .footer-brand{grid-column:span 2}
}
@media (max-width:767.98px){
  .section{padding:64px 0}
  .shell{padding:0 18px}
  .dock-search{display:none}
  .step-grid{grid-template-columns:1fr;gap:22px;padding:22px}
  .step-grid.is-reverse .step-text{order:0}
  .step-grid.is-reverse .step-media{order:0}
  .step-head{gap:12px}
  .step-num{width:44px;height:44px;font-size:16px;border-radius:14px}
  .step-end{justify-content:stretch}
  .step-end .btn-sky,.step-end .btn-ghost{flex:1 1 100%}
  .footer-bottom{flex-direction:column;gap:8px}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}
@media (max-width:575.98px){
  body{font-size:15px}
  .brand-name{font-size:15px}
  .brand-mark{width:30px;height:30px;border-radius:10px;font-size:13px}
  .dock-tools .btn-sm{padding:10px 12px;font-size:13px}
  .hero h1{font-size:26px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn-sky,.hero-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand{grid-column:auto}
  .cta-card{padding:24px}
  .accordion-button{font-size:15px;padding:16px 16px}
  .accordion-body{padding:16px 16px 18px}
}

/* roulang page: category4 */
:root{
  --bg:#070A18;
  --panel:#10162B;
  --glass:rgba(20,26,51,.66);
  --glass-soft:rgba(16,22,43,.55);
  --sky:#2FD9C4;
  --sky-hover:#59F0DC;
  --sky-press:#1FB3A2;
  --violet:#7C5CFF;
  --orange:#FF8A3D;
  --text:#E7EBF7;
  --muted:#9AA6C4;
  --weak:#6C7693;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --pill:999px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.08),0 18px 40px -24px rgba(0,0,0,.85);
  --shadow-hover:inset 0 1px 0 rgba(255,255,255,.14),0 26px 52px -26px rgba(0,0,0,.95);
  --glow:0 0 0 1px rgba(47,217,196,.6),0 10px 30px -10px rgba(47,217,196,.7);
  --bs-primary:#2FD9C4;
  --bs-body-bg:#070A18;
  --bs-body-color:#E7EBF7;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-link-color:#2FD9C4;
  --bs-link-hover-color:#59F0DC;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  min-height:100%;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(920px 620px at 10% -6%,rgba(47,217,196,.16),transparent 62%),
    radial-gradient(820px 640px at 90% 6%,rgba(124,92,255,.18),transparent 64%),
    radial-gradient(760px 520px at 50% 104%,rgba(255,138,61,.08),transparent 62%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.032) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);
}

h1,h2,h3,h4,h5{line-height:1.25;margin:0;color:var(--text)}
h1{font-weight:800;letter-spacing:-.4px}
h2{font-weight:700}
h3{font-weight:600}
p{margin:0}
a{color:var(--sky);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--sky-hover)}
img{max-width:100%;display:block;border-radius:var(--r-md)}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--sky);outline-offset:2px;border-radius:6px}

.num{font-variant-numeric:tabular-nums}

/* ---------- 布局容器 ---------- */
.shell{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--sky);font-weight:600;
  padding:6px 14px;border-radius:var(--pill);
  background:rgba(47,217,196,.10);
  border:1px solid rgba(47,217,196,.28);
  margin-bottom:18px;
}
.section-title{font-size:36px;margin-bottom:14px}
.section-sub{color:var(--muted);font-size:16px;max-width:680px}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);border:0;margin:0}

/* ---------- Dock 导航 ---------- */
.site-header{padding:16px 0 0;position:relative;z-index:60}
.dock{
  position:sticky;top:16px;z-index:60;
  width:min(1120px,92vw);
  margin:0 auto;
  display:flex;align-items:center;gap:18px;
  padding:10px 14px 10px 18px;
  border-radius:var(--pill);
  background:rgba(12,17,36,.72);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 20px 44px -28px rgba(0,0,0,.95);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  transition:padding .28s ease,background .28s ease,box-shadow .28s ease;
}
.dock.is-scrolled{
  padding:7px 12px 7px 16px;
  background:rgba(12,17,36,.9);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 24px 50px -26px rgba(0,0,0,1);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  display:grid;place-items:center;
  font-size:15px;color:#04121A;
  background:linear-gradient(135deg,var(--sky),var(--violet));
  box-shadow:0 8px 20px -10px rgba(47,217,196,.9);
}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.brand-name span{color:var(--sky);margin-left:2px}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.dock-nav a{
  position:relative;
  padding:9px 14px;border-radius:var(--pill);
  font-size:14px;font-weight:500;color:var(--muted);
  white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.dock-nav a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.dock-nav a.is-active{color:var(--text);background:rgba(47,217,196,.12)}
.dock-nav a.is-active::after{
  content:"";position:absolute;left:50%;bottom:3px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--sky);
  box-shadow:0 0 10px rgba(47,217,196,.9);
}
.dock-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.dock-search{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--pill);
  font-size:13px;color:var(--muted);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  cursor:pointer;transition:all .2s ease;min-height:40px;
}
.dock-search:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.09)}
.dock-search i{color:var(--sky)}
.dock-toggle{
  display:none;width:44px;height:44px;border-radius:14px;
  align-items:center;justify-content:center;
  color:var(--text);background:rgba(255,255,255,.06);
  border:1px solid var(--line);cursor:pointer;
}

/* ---------- 按钮 ---------- */
.btn-sky,.btn-glass,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 26px;border-radius:var(--pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .24s ease,background .24s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-sm{min-height:40px;padding:0 18px;font-size:13.5px}
.btn-lg{min-height:54px;padding:0 32px;font-size:16px}
.btn-sky{
  color:#04121A;
  background:linear-gradient(135deg,var(--sky),#43E3D0 60%,#5FD8FF);
  box-shadow:var(--glow);
}
.btn-sky:hover{color:#04121A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,217,196,.75),0 16px 36px -12px rgba(47,217,196,.8)}
.btn-sky:active{transform:translateY(1px);background:var(--sky-press)}
.btn-glass{
  color:var(--text);
  background:rgba(255,255,255,.06);
  border-color:var(--line-strong);
  backdrop-filter:blur(10px);
}
.btn-glass:hover{color:var(--text);background:rgba(255,255,255,.12);transform:translateY(-2px);box-shadow:0 16px 34px -20px rgba(0,0,0,.95)}
.btn-line{
  color:var(--sky);
  background:transparent;
  border-color:rgba(47,217,196,.42);
}
.btn-line:hover{color:#04121A;background:var(--sky);transform:translateY(-2px)}

/* ---------- 卡片 ---------- */
.card-glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card-glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:var(--r-lg) var(--r-lg) 0 0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.34),transparent);
}
.card-glass:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.card-pad-lg{padding:32px}

.icon-tile{
  width:50px;height:50px;border-radius:14px;flex:0 0 auto;
  display:grid;place-items:center;font-size:19px;
  color:var(--sky);
  background:rgba(47,217,196,.12);
  border:1px solid rgba(47,217,196,.28);
}
.icon-tile.violet{color:#B7A6FF;background:rgba(124,92,255,.16);border-color:rgba(124,92,255,.34)}
.icon-tile.orange{color:var(--orange);background:rgba(255,138,61,.14);border-color:rgba(255,138,61,.32)}

.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  color:var(--sky);background:rgba(47,217,196,.12);
  border:1px solid rgba(47,217,196,.3);
}
.badge-soft.violet{color:#B7A6FF;background:rgba(124,92,255,.15);border-color:rgba(124,92,255,.32)}
.badge-soft.orange{color:var(--orange);background:rgba(255,138,61,.14);border-color:rgba(255,138,61,.32)}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  padding:72px 0 40px;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 380px at 14% 12%,rgba(47,217,196,.20),transparent 64%),
    radial-gradient(560px 420px at 86% 26%,rgba(124,92,255,.22),transparent 66%);
}
.hero-inner{position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--weak);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--sky)}
.crumb i{font-size:10px;color:var(--weak)}
.hero-h1{font-size:46px;max-width:820px}
.hero-h1 em{font-style:normal;background:linear-gradient(120deg,var(--sky),#7C5CFF 78%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:var(--muted);font-size:18px;max-width:660px;margin-top:18px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

.support-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
  margin-top:36px;max-width:760px;
}
.support-strip .item{
  padding:16px 18px;border-radius:var(--r-md);
  background:var(--glass-soft);border:1px solid var(--line);
}
.support-strip .item strong{display:block;font-size:22px;font-weight:700;color:var(--sky);font-variant-numeric:tabular-nums}
.support-strip .item span{font-size:13px;color:var(--muted)}

.search-card{
  margin-top:38px;
  display:flex;gap:12px;flex-wrap:wrap;
  padding:18px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
}
.search-field{
  flex:1 1 320px;display:flex;align-items:center;gap:12px;
  padding:0 20px;min-height:52px;border-radius:var(--pill);
  background:rgba(7,10,24,.7);border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-field:focus-within{border-color:rgba(47,217,196,.7);box-shadow:0 0 0 4px rgba(47,217,196,.16)}
.search-field i{color:var(--weak)}
.search-field input{
  flex:1;background:transparent;border:0;outline:none;
  color:var(--text);font-size:15px;min-height:50px;
}
.search-field input::placeholder{color:var(--weak)}
.quick-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;position:relative;z-index:1}
.quick-tags a{
  font-size:13px;padding:7px 14px;border-radius:var(--pill);
  color:var(--muted);background:rgba(255,255,255,.05);border:1px solid var(--line);
  transition:all .2s ease;
}
.quick-tags a:hover{color:var(--text);border-color:rgba(47,217,196,.5);background:rgba(47,217,196,.1)}

/* ---------- 主题速查非对称栅格 ---------- */
.topic-grid{display:grid;grid-template-columns:7fr 5fr;gap:22px;align-items:start}
.topic-main{display:flex;flex-direction:column;gap:16px}
.topic-list{display:grid;gap:14px}
.topic-row{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px 22px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.topic-row:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.topic-row h3{font-size:16px;margin-bottom:6px}
.topic-row p{font-size:13.5px;color:var(--muted);line-height:1.7}
.topic-main h2{font-size:24px;margin-bottom:12px}
.topic-main p{color:var(--muted);font-size:14.5px}
.topic-main ul{margin-top:20px;display:grid;gap:10px}
.topic-main ul li{display:flex;gap:10px;font-size:14px;color:var(--text)}
.topic-main ul li i{color:var(--sky);margin-top:6px;font-size:11px}
.topic-media{
  margin-top:24px;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);position:relative;
}
.topic-media img{width:100%;height:190px;object-fit:cover;border-radius:0}
.topic-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,24,.1),rgba(7,10,24,.82));
}
.topic-media span{
  position:absolute;left:18px;right:18px;bottom:16px;z-index:2;
  font-size:13.5px;color:var(--text);font-weight:600;
}

/* ---------- FAQ 手风琴 ---------- */
.faq-group{margin-bottom:46px}
.faq-group-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.faq-group-head h3{font-size:20px}
.faq-group-head span{
  font-size:12px;color:var(--weak);
  padding:4px 12px;border-radius:var(--pill);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
}
.accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.accordion-item:first-of-type{border-top:1px solid var(--line)}
.accordion-button{
  position:relative;
  width:100%;
  background:transparent !important;
  color:var(--text) !important;
  font-size:16px;font-weight:600;
  padding:22px 56px 22px 18px;
  border-radius:0 !important;
  box-shadow:none !important;
  transition:color .2s ease,background .2s ease;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;
  border-radius:3px;background:var(--sky);
  opacity:0;transform:scaleY(.4);transform-origin:center;
  transition:opacity .22s ease,transform .22s ease;
}
.accordion-button:not(.collapsed){color:var(--sky-hover) !important}
.accordion-button:not(.collapsed)::before{opacity:1;transform:scaleY(1)}
.accordion-button::after{display:none !important}
.accordion-button:hover{background:rgba(255,255,255,.03) !important}
.faq-plus{
  position:absolute;right:18px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;
  color:var(--sky);background:rgba(47,217,196,.1);
  border:1px solid rgba(47,217,196,.28);
  transition:transform .26s ease,background .26s ease,color .26s ease;
}
.accordion-button:not(.collapsed) .faq-plus{
  transform:translateY(-50%) rotate(45deg);
  background:var(--sky);color:#04121A;
}
.accordion-body{
  padding:0 56px 26px 18px;
  color:var(--muted);font-size:14.5px;line-height:1.8;
}
.accordion-body strong{color:var(--text);font-weight:600}

/* ---------- 排查步骤时间线 ---------- */
.trouble-wrap{display:grid;grid-template-columns:6fr 6fr;gap:40px;align-items:start}
.timeline{position:relative;padding-left:34px}
.timeline::before{
  content:"";position:absolute;left:13px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,rgba(47,217,196,.75),rgba(124,92,255,.35),transparent);
}
.tl-item{position:relative;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:attr(data-step);
  position:absolute;left:-34px;top:2px;
  width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;
  font-size:12px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--sky),#5FD8FF);
  box-shadow:0 0 0 4px rgba(47,217,196,.12);
  font-variant-numeric:tabular-nums;
}
.tl-item h3{font-size:17px;margin-bottom:8px}
.tl-item p{font-size:14px;color:var(--muted)}
.tl-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  position:relative;box-shadow:var(--shadow-card);
}
.tl-media img{width:100%;height:100%;min-height:320px;object-fit:cover;border-radius:0}
.tl-media .cap{
  position:absolute;left:0;right:0;bottom:0;padding:22px;
  background:linear-gradient(180deg,transparent,rgba(7,10,24,.92));
  font-size:14px;color:var(--text);
}
.tl-media .cap strong{display:block;font-size:16px;margin-bottom:4px}

/* ---------- 清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.check-item{
  display:flex;gap:14px;padding:22px;border-radius:var(--r-md);
  background:var(--glass-soft);border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease;
}
.check-item:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.check-item i{color:var(--sky);font-size:17px;margin-top:5px}
.check-item h4{font-size:15.5px;margin-bottom:6px}
.check-item p{font-size:13.5px;color:var(--muted)}

/* ---------- 联系卡 ---------- */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:stretch}
.contact-card{
  border-radius:var(--r-lg);padding:32px;
  background:
    radial-gradient(420px 300px at 20% 10%,rgba(47,217,196,.18),transparent 66%),
    radial-gradient(360px 300px at 90% 90%,rgba(124,92,255,.22),transparent 66%),
    var(--panel);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
}
.contact-card h3{font-size:22px;margin-bottom:12px}
.contact-card p{color:var(--muted);font-size:14.5px}
.contact-rows{display:grid;gap:14px;margin-top:24px}
.contact-rows div{
  display:flex;gap:12px;align-items:center;
  padding:14px 16px;border-radius:var(--r-sm);
  background:rgba(7,10,24,.42);border:1px solid var(--line);
  font-size:14px;
}
.contact-rows i{color:var(--sky);width:18px;text-align:center}
.contact-rows b{color:var(--text);font-weight:600}

/* ---------- 结尾 CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:48px;
  background:
    radial-gradient(600px 320px at 15% 0%,rgba(47,217,196,.22),transparent 62%),
    radial-gradient(520px 340px at 92% 100%,rgba(124,92,255,.26),transparent 64%),
    var(--panel);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
}
.cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;position:relative;z-index:1}
.cta-block h2{font-size:32px;margin-bottom:14px}
.cta-block p{color:var(--muted);font-size:15px}
.cta-points{display:grid;gap:10px;margin-top:22px}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text)}
.cta-points i{color:var(--sky);margin-top:6px;font-size:11px}
.dl-actions{display:flex;flex-direction:column;gap:12px}
.qr-row{display:flex;align-items:center;gap:16px;margin-top:6px}
.qr-box{
  width:120px;height:120px;border-radius:12px;background:#fff;flex:0 0 auto;
  display:grid;place-items:center;padding:8px;
}
.qr-pattern{
  width:100%;height:100%;border-radius:6px;
  background-image:repeating-conic-gradient(#0B1020 0% 25%,#ffffff 0% 50%);
  background-size:11px 11px;
}
.qr-row span{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:rgba(5,8,20,.88);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  position:relative;
  z-index:1;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,217,196,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:18px;max-width:320px}
.footer-col h4{font-size:13px;color:var(--weak);font-weight:600;letter-spacing:.08em;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text)}
.footer-col a:hover{color:var(--sky)}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--weak);
}
.footer-bottom .tech{color:var(--weak)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-h1{font-size:40px}
  .section{padding:80px 0}
}
@media (max-width:991.98px){
  .dock{gap:12px;padding:9px 12px}
  .dock-nav{
    display:none;
    position:fixed;inset:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:96px 24px 32px;
    background:rgba(7,10,24,.97);
    backdrop-filter:blur(20px) saturate(150%);
    -webkit-backdrop-filter:blur(20px) saturate(150%);
    z-index:70;margin:0;overflow-y:auto;
  }
  .dock.is-open .dock-nav{display:flex}
  .dock-nav a{
    font-size:17px;padding:16px 18px;border-radius:var(--r-md);
    border:1px solid var(--line);
  }
  .dock-nav a.is-active::after{display:none}
  .dock-nav a.is-active{border-color:rgba(47,217,196,.5)}
  .dock-toggle{display:flex}
  .dock-search span{display:none}
  .dock-search{padding:0;width:44px;justify-content:center}
  .topic-grid,.trouble-wrap,.contact-grid,.cta-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
  .hero-h1{font-size:34px}
  .section-title{font-size:28px}
  .cta-block{padding:34px}
}
@media (max-width:575.98px){
  .shell{padding:0 18px}
  .hero-h1{font-size:28px}
  .hero-sub{font-size:16px}
  .section-title{font-size:24px}
  .support-strip{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .brand-name{font-size:15px}
  .brand-name span{display:none}
  .dock-tools .btn-sky span{display:none}
  .dock-tools .btn-sky{padding:0 16px}
  .card-glass{padding:20px;border-radius:var(--r-md)}
  .accordion-button{padding:18px 48px 18px 14px;font-size:15px}
  .accordion-body{padding:0 18px 22px 14px}
  .section{padding:56px 0}
  .cta-block{padding:26px}
  .qr-row{flex-direction:column;align-items:flex-start}
  .timeline{padding-left:30px}
  .tl-item::before{left:-30px}
  .tl-media img{min-height:220px}
}