/* roulang page: index */
:root{
  --bg-0:#050912;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --brand:#00D6FF;
  --brand-glow:rgba(0,214,255,.35);
  --accent:#FF6A2A;
  --signal:#9BFF57;
  --glass:rgba(12,24,42,.66);
  --glass-strong:rgba(16,32,56,.78);
  --line:rgba(0,214,255,.18);
  --line-soft:rgba(155,176,201,.14);
  --text:#EAF4FF;
  --muted:#9BB0C9;
  --dim:#6C819A;
  --radius-card:18px;
  --radius-btn:999px;
  --radius-input:12px;
  --shadow:0 24px 80px rgba(0,0,0,.45);
  --shadow-soft:0 12px 40px rgba(0,0,0,.32);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg-0);
  color:var(--text);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(0,214,255,.10), transparent 62%),
    radial-gradient(760px 460px at 96% 8%, rgba(255,106,42,.08), transparent 60%),
    linear-gradient(180deg,#050912 0%,#070d18 55%,#050912 100%);
  z-index:-2;
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(0,214,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,214,255,.035) 1px, transparent 1px);
  background-size:72px 72px;
  z-index:-1;
  pointer-events:none;
  mask-image:radial-gradient(circle at 50% 22%, rgba(0,0,0,.9), transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 22%, rgba(0,0,0,.9), transparent 78%);
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:#7CE9FF;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
::selection{background:rgba(0,214,255,.28);color:#fff;}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0;position:relative;}
.section--tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand);
  background:rgba(0,214,255,.10);
  border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;
  margin-bottom:16px;font-weight:600;
}
.eyebrow i{font-size:11px;}
h2.h2{font-size:clamp(1.7rem,3vw,2.4rem);}
.lead{color:var(--muted);font-size:17px;margin-top:14px;max-width:680px;}
.section-head.center .lead{margin-left:auto;margin-right:auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-size:15.5px;font-weight:700;
  padding:14px 28px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,filter .22s ease;
  white-space:nowrap;
  line-height:1.2;
  text-align:center;
}
.btn i{font-size:14px;}
.btn-primary{
  background:linear-gradient(120deg,#00D6FF 0%,#22B8FF 52%,#0FA8E8 100%);
  color:#04121C;
  box-shadow:0 10px 34px rgba(0,214,255,.32),0 0 0 1px rgba(0,214,255,.28) inset;
}
.btn-primary:hover{
  color:#04121C;filter:brightness(1.08);transform:translateY(-2px);
  box-shadow:0 16px 44px rgba(0,214,255,.48),0 0 0 1px rgba(0,214,255,.4) inset;
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--glass);
  color:var(--text);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.btn-ghost:hover{color:var(--text);border-color:var(--brand);box-shadow:0 10px 30px rgba(0,214,255,.18);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-accent{
  background:linear-gradient(120deg,#FF8038,#FF5A18);
  color:#1B0A02;
  box-shadow:0 10px 32px rgba(255,106,42,.32);
}
.btn-accent:hover{color:#1B0A02;filter:brightness(1.07);transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:14.5px;}
.btn-lg{padding:17px 36px;font-size:16.5px;}
.btn-block{width:100%;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1200;
  height:78px;
  display:flex;align-items:center;
  background:rgba(5,9,18,.72);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(6,12,24,.92);
  border-bottom-color:var(--line);
  box-shadow:0 14px 40px rgba(0,0,0,.42);
}
.nav-wrap{
  width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;
  display:flex;align-items:center;gap:26px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,rgba(0,214,255,.22),rgba(255,106,42,.18));
  border:1px solid var(--line);
  display:grid;place-items:center;
  color:var(--brand);font-size:17px;
  box-shadow:0 0 20px rgba(0,214,255,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:17.5px;font-weight:800;color:var(--text);letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:var(--dim);letter-spacing:.12em;font-weight:600;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:14px;flex:1;}
.nav-link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:15px;font-weight:600;color:var(--muted);
  padding:9px 15px;border-radius:999px;
  border:1px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(0,214,255,.09);border-color:var(--line);}
.nav-link.active{color:var(--brand);background:rgba(0,214,255,.12);border-color:var(--line);}
.nav-actions{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.burger{
  display:none;
  width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line-soft);
  color:var(--text);font-size:17px;
  align-items:center;justify-content:center;
}
.burger:hover{border-color:var(--brand);color:var(--brand);}

.drawer{
  position:fixed;inset:0;z-index:1400;
  background:rgba(5,9,18,.97);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  display:flex;flex-direction:column;
  padding:22px 24px 30px;
  transform:translateX(100%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line-soft);
  color:var(--text);font-size:17px;display:grid;place-items:center;
}
.drawer-close:hover{color:var(--brand);border-color:var(--brand);}
.drawer-label{font-size:12px;color:var(--dim);letter-spacing:.14em;margin:20px 0 10px;font-weight:700;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 16px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line-soft);
  color:var(--text);font-size:16px;font-weight:600;margin-bottom:10px;
}
.drawer-link:hover{border-color:var(--brand);color:var(--brand);}
.drawer-cta{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:158px 0 84px;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center right;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(5,9,18,.96) 0%,rgba(5,9,18,.88) 42%,rgba(5,9,18,.62) 72%,rgba(5,9,18,.86) 100%);
}
.hero::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:140px;
  background:linear-gradient(180deg,transparent,rgba(5,9,18,.95));
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:56px;align-items:center;}
.hero-title{font-size:clamp(2.4rem,5vw,3.6rem);line-height:1.16;}
.hero-title .hl{
  color:var(--brand);
  text-shadow:0 0 34px rgba(0,214,255,.45);
}
.hero-sub{
  margin-top:22px;font-size:17.5px;color:var(--muted);max-width:560px;line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-note{
  margin-top:20px;font-size:13.5px;color:var(--dim);
  display:flex;align-items:center;gap:9px;
}
.hero-note i{color:var(--signal);font-size:11px;}
.hero-panel{
  background:var(--glass-strong);
  border:1px solid var(--line);
  border-radius:22px;
  padding:18px;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow),0 0 0 1px rgba(0,214,255,.10) inset;
  position:relative;
}
.hero-panel::before{
  content:"";
  position:absolute;top:0;left:22px;right:22px;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--accent),transparent);
  border-radius:2px;
}
.hero-panel img{border-radius:16px;width:100%;}
.panel-tag{
  position:absolute;top:-13px;right:24px;
  background:linear-gradient(120deg,#FF8038,#FF5A18);
  color:#1B0A02;font-size:12px;font-weight:800;
  padding:6px 14px;border-radius:999px;
  box-shadow:0 8px 24px rgba(255,106,42,.4);
}
.panel-caption{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 6px 4px;font-size:13.5px;color:var(--muted);
}
.live-dot{
  display:inline-flex;align-items:center;gap:7px;color:var(--signal);font-weight:700;font-size:13px;
}
.live-dot span{
  width:8px;height:8px;border-radius:50%;background:var(--signal);
  box-shadow:0 0 0 0 rgba(155,255,87,.6);
  animation:pulse 1.9s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(155,255,87,.55);}
  70%{box-shadow:0 0 0 12px rgba(155,255,87,0);}
  100%{box-shadow:0 0 0 0 rgba(155,255,87,0);}
}

/* ============ 数据条 ============ */
.stat-bar{
  margin-top:64px;
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line-soft);
  border-radius:18px;
  overflow:hidden;
}
.stat-item{
  background:rgba(10,18,32,.82);
  padding:22px 20px;
  text-align:left;
}
.stat-num{
  font-size:clamp(1.35rem,2.4vw,1.75rem);
  font-weight:800;color:var(--brand);
  font-variant-numeric:tabular-nums;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  letter-spacing:-.01em;
}
.stat-label{margin-top:5px;font-size:13.5px;color:var(--muted);}

/* ============ 价值区 ============ */
.value-grid{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  grid-template-rows:auto auto;
  gap:22px;
}
.value-card{
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  padding:30px 28px;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
  position:relative;
  overflow:hidden;
}
.value-card::after{
  content:"";
  position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  opacity:0;transition:opacity .24s ease;
}
.value-card:hover{
  transform:translateY(-4px);
  border-color:var(--line);
  box-shadow:0 24px 70px rgba(0,0,0,.5),0 0 0 1px rgba(0,214,255,.14) inset;
}
.value-card:hover::after{opacity:1;}
.value-card.wide{grid-column:span 1;}
.value-card.tall{grid-row:span 2;}
.value-icon{
  width:50px;height:50px;border-radius:14px;
  display:grid;place-items:center;
  background:rgba(0,214,255,.12);
  border:1px solid var(--line);
  color:var(--brand);font-size:19px;
  margin-bottom:18px;
}
.value-card h3{font-size:1.3rem;margin-bottom:10px;}
.value-card p{color:var(--muted);font-size:15.5px;}
.value-link{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:18px;font-size:14.5px;font-weight:700;color:var(--brand);
}
.value-link:hover{gap:12px;color:#7CE9FF;}
.value-metric{
  margin-top:22px;padding-top:20px;border-top:1px dashed var(--line-soft);
  display:flex;gap:26px;
}
.value-metric div span{
  display:block;font-size:1.5rem;font-weight:800;color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.value-metric div small{font-size:13px;color:var(--dim);}

/* ============ 截图轮播 ============ */
.shots{position:relative;}
.shots-track{
  display:flex;gap:22px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:8px 4px 26px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.shots-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 340px;
  scroll-snap-align:start;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:20px;
  padding:14px;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.shot-card:hover{transform:translateY(-4px);border-color:var(--line);box-shadow:0 22px 60px rgba(0,0,0,.5);}
.shot-frame{
  border-radius:16px;overflow:hidden;position:relative;
  border:1px solid rgba(0,214,255,.16);
  background:#081120;
}
.shot-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease;}
.shot-card:hover .shot-frame img{transform:scale(1.04);}
.shot-body{padding:16px 8px 6px;}
.shot-body h3{font-size:1.06rem;margin-bottom:8px;}
.shot-body p{color:var(--muted);font-size:14.5px;line-height:1.75;}
.shot-index{
  position:absolute;top:12px;left:12px;
  background:rgba(5,9,18,.78);
  border:1px solid var(--line);
  color:var(--brand);font-size:12px;font-weight:800;
  padding:4px 11px;border-radius:999px;
  font-variant-numeric:tabular-nums;
}
.shots-controls{display:flex;align-items:center;justify-content:space-between;margin-top:8px;}
.dots{display:flex;gap:9px;}
.dot{
  width:9px;height:9px;border-radius:50%;
  background:rgba(155,176,201,.3);
  border:none;padding:0;
  transition:background .2s ease,width .24s ease;
}
.dot.active{background:var(--brand);width:26px;border-radius:999px;box-shadow:0 0 14px var(--brand-glow);}
.arrows{display:flex;gap:11px;}
.arrow-btn{
  width:46px;height:46px;border-radius:50%;
  background:var(--glass);border:1px solid var(--line-soft);
  color:var(--text);font-size:15px;
  display:grid;place-items:center;
  transition:border-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.arrow-btn:hover{border-color:var(--brand);color:var(--brand);box-shadow:0 10px 26px rgba(0,214,255,.2);transform:translateY(-2px);}
.arrow-btn:active{transform:translateY(1px);}

/* ============ 系统要求 ============ */
.specs-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.spec-card{
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  padding:28px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:border-color .24s ease,transform .24s ease;
}
.spec-card:hover{border-color:var(--line);transform:translateY(-3px);}
.spec-card-head{
  display:flex;align-items:center;gap:13px;
  padding-bottom:18px;margin-bottom:6px;
  border-bottom:1px solid var(--line-soft);
}
.spec-card-head i{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(0,214,255,.12);color:var(--brand);
  border:1px solid var(--line);font-size:16px;
}
.spec-card-head h3{font-size:1.14rem;}
.spec-card-head span{font-size:13px;color:var(--dim);}
.spec-list dt{
  font-size:13.5px;color:var(--dim);font-weight:600;margin-top:16px;
  letter-spacing:.02em;
}
.spec-list dd{
  margin:4px 0 0;font-size:15.5px;color:var(--text);
  font-variant-numeric:tabular-nums;
}
.spec-note{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;
}
.copy-tip{
  font-size:13.5px;color:var(--signal);opacity:0;transition:opacity .3s ease;
}
.copy-tip.show{opacity:1;}

/* ============ 评价墙 ============ */
.reviews{
  column-count:2;
  column-gap:22px;
}
.review-card{
  break-inside:avoid;
  margin-bottom:22px;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  padding:26px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.review-card:hover{transform:translateY(-4px);border-color:var(--line);box-shadow:0 22px 60px rgba(0,0,0,.48);}
.review-top{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.avatar{
  width:48px;height:48px;border-radius:14px;
  display:grid;place-items:center;
  font-weight:800;font-size:16px;color:#04121C;
  background:linear-gradient(140deg,#00D6FF,#22B8FF);
  flex-shrink:0;
}
.avatar.alt{background:linear-gradient(140deg,#FF8038,#FF5A18);}
.avatar.green{background:linear-gradient(140deg,#9BFF57,#4FD07A);}
.review-name{font-weight:700;font-size:15.5px;}
.review-meta{font-size:13px;color:var(--dim);margin-top:2px;}
.stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin-bottom:12px;}
.review-card p{color:var(--muted);font-size:15.5px;line-height:1.85;}
.review-tag{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:16px;font-size:12.5px;color:var(--dim);
  border:1px solid var(--line-soft);
  padding:4px 11px;border-radius:999px;
}

/* ============ 下载区 ============ */
.download-panel{
  background:linear-gradient(140deg,rgba(0,214,255,.10),rgba(255,106,42,.06) 62%,rgba(12,24,42,.7));
  border:1px solid var(--line);
  border-radius:26px;
  padding:52px 46px;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow),0 0 0 1px rgba(0,214,255,.10) inset;
  position:relative;
  overflow:hidden;
}
.download-panel::before{
  content:"";
  position:absolute;top:0;left:40px;right:40px;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--accent),transparent);
}
.dl-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:44px;align-items:center;}
.dl-buttons{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.dl-buttons .btn{min-width:180px;}
.dl-sub{display:flex;flex-wrap:wrap;gap:14px;margin-top:18px;}
.qr-box{
  background:rgba(5,9,18,.6);
  border:1px dashed var(--line);
  border-radius:20px;
  padding:24px;
  text-align:center;
}
.qr-holder{
  width:150px;height:150px;margin:0 auto 16px;
  border-radius:14px;
  background:
    repeating-conic-gradient(rgba(0,214,255,.85) 0% 25%, rgba(5,9,18,.9) 0% 50%) 0 0/16px 16px;
  border:1px solid var(--line);
  box-shadow:0 0 30px rgba(0,214,255,.18);
}
.qr-box h3{font-size:1.05rem;margin-bottom:8px;}
.qr-box p{font-size:13.5px;color:var(--muted);}

/* ============ 资讯列表 ============ */
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
  height:100%;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line);box-shadow:0 24px 66px rgba(0,0,0,.5);}
.news-cover{
  position:relative;overflow:hidden;aspect-ratio:16/9;background:#081120;
}
.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-badge{
  position:absolute;left:14px;top:14px;
  background:rgba(5,9,18,.82);
  border:1px solid var(--line);
  color:var(--brand);font-size:12.5px;font-weight:700;
  padding:5px 12px;border-radius:999px;
  backdrop-filter:blur(8px);
}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.news-date{
  font-size:13px;color:var(--dim);
  display:flex;align-items:center;gap:7px;margin-bottom:10px;
  font-variant-numeric:tabular-nums;
}
.news-body h3{
  font-size:1.12rem;line-height:1.55;margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{
  color:var(--muted);font-size:14.6px;line-height:1.8;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{
  margin-top:16px;font-size:14px;font-weight:700;color:var(--brand);
  display:inline-flex;align-items:center;gap:8px;
}
.news-more:hover{gap:12px;}
.news-wide{
  grid-column:span 2;
  flex-direction:row;
}
.news-wide .news-cover{flex:0 0 42%;aspect-ratio:auto;min-height:220px;}
.news-wide .news-body{justify-content:center;}
.empty-state{
  grid-column:1/-1;
  text-align:center;
  padding:64px 24px;
  background:var(--glass);
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
}
.empty-state i{font-size:30px;color:var(--brand);opacity:.7;margin-bottom:16px;display:block;}
.empty-state p{color:var(--muted);font-size:15.5px;margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:16px;
  overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item:hover{border-color:var(--line);}
.faq-item.open{border-color:var(--line);box-shadow:0 18px 48px rgba(0,0,0,.42);}
.faq-q{
  width:100%;background:none;border:none;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:21px 24px;
  color:var(--text);font-size:16.5px;font-weight:700;text-align:left;
  font-family:inherit;line-height:1.6;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex-shrink:0;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(0,214,255,.12);border:1px solid var(--line);
  color:var(--brand);font-size:12px;
  transition:transform .28s ease,background .24s ease;
}
.faq-item.open .faq-icon{transform:rotate(135deg);background:rgba(0,214,255,.22);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .34s ease;
}
.faq-a-inner{
  padding:0 24px 22px;
  color:var(--muted);font-size:15.5px;line-height:1.85;
  border-top:1px solid var(--line-soft);
  padding-top:18px;
  margin:0 24px 22px;
  padding-left:0;padding-right:0;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;
  background:rgba(6,11,22,.92);
  border-top:1px solid var(--line);
  position:relative;
  padding:66px 0 30px;
}
.site-footer::before{
  content:"";
  position:absolute;top:-1px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(0,214,255,.75),rgba(255,106,42,.6),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.footer-brand .brand-name{font-size:16.5px;}
.footer-col h4{
  font-size:14px;color:var(--text);margin-bottom:18px;
  letter-spacing:.06em;font-weight:700;
}
.footer-col p{color:var(--muted);font-size:14.5px;line-height:1.85;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{color:var(--muted);font-size:14.5px;}
.footer-col ul li a:hover{color:var(--brand);}
.footer-contact{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:14.5px;margin-bottom:12px;}
.footer-contact i{color:var(--brand);width:16px;font-size:13px;}
.footer-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13.5px;color:var(--dim);
}
.footer-bottom a{color:var(--dim);}
.footer-bottom a:hover{color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-menu{display:none;}
  .nav-actions .btn-ghost{display:none;}
  .burger{display:flex;}
  .hero{padding:132px 0 66px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-panel{max-width:620px;}
  .value-grid{grid-template-columns:1fr;}
  .value-card.tall{grid-row:span 1;}
  .specs-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-wide{grid-column:span 2;}
  .dl-grid{grid-template-columns:1fr;gap:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .stat-bar{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .nav-wrap{padding:0 20px;}
  .section{padding:56px 0;}
  .section--tight{padding:46px 0;}
  .hero{padding:120px 0 52px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .stat-bar{margin-top:44px;}
  .shot-card{flex:0 0 78vw;}
  .reviews{column-count:1;}
  .download-panel{padding:36px 24px;}
  .dl-buttons{flex-direction:column;}
  .dl-buttons .btn{width:100%;}
  .dl-sub .btn{width:100%;}
  .news-grid{grid-template-columns:1fr;}
  .news-wide{flex-direction:column;grid-column:span 1;}
  .news-wide .news-cover{flex:none;min-height:0;aspect-ratio:16/9;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a-inner{margin:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .spec-card{padding:22px;}
  .value-card{padding:24px;}
}
@media (max-width:480px){
  body{font-size:16px;}
  .hero-title{font-size:2rem;}
  .brand-sub{display:none;}
  .stat-bar{grid-template-columns:1fr 1fr;}
  .stat-item{padding:18px 16px;}
  .arrow-btn{width:42px;height:42px;}
  .btn{padding:13px 22px;font-size:15px;}
  .btn-lg{padding:15px 26px;font-size:15.5px;}
}

/* roulang page: article */
:root{
  --bg-0:#050912;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --brand:#00D6FF;
  --brand-glow:rgba(0,214,255,.35);
  --accent:#FF6A2A;
  --signal:#9BFF57;
  --glass:rgba(12,24,42,.66);
  --glass-strong:rgba(16,32,56,.78);
  --line:rgba(0,214,255,.18);
  --line-soft:rgba(155,176,201,.14);
  --text:#EAF4FF;
  --text-2:#9BB0C9;
  --text-3:#6C819A;
  --radius-sm:12px;
  --radius:16px;
  --radius-lg:20px;
  --pill:999px;
  --shadow:0 24px 80px rgba(0,0,0,.45);
  --shadow-soft:0 12px 36px rgba(0,0,0,.35);
  --container:1200px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:
    radial-gradient(1200px 600px at 12% -8%, rgba(0,214,255,.12), transparent 60%),
    radial-gradient(900px 520px at 92% 6%, rgba(255,106,42,.10), transparent 62%),
    var(--bg-0);
  color:var(--text);
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius);}
a{color:var(--brand);text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:hover{color:#7CE7FF;}
h1,h2,h3,h4{color:#fff;font-weight:800;letter-spacing:-.02em;line-height:1.25;margin:0 0 .6em;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.2em;}
button,input,textarea,select{font-family:inherit;font-size:1rem;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;position:relative;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:44px;max-width:760px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8rem;letter-spacing:.12em;color:var(--brand);
  background:rgba(0,214,255,.08);border:1px solid var(--line);
  padding:6px 14px;border-radius:var(--pill);margin-bottom:16px;font-weight:600;
}
.section-head h2{font-size:clamp(1.7rem,3vw,2.4rem);margin-bottom:14px;}
.section-head p{color:var(--text-2);margin-bottom:0;font-size:1rem;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
  border-bottom:1px solid transparent;
  backdrop-filter:blur(10px);
}
.site-header.is-scrolled{
  background:rgba(5,9,18,.86);
  border-bottom-color:var(--line);
  box-shadow:0 12px 40px rgba(0,0,0,.5);
}
.nav-wrap{
  max-width:var(--container);margin:0 auto;padding:0 32px;
  height:78px;display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:12px;color:#fff;}
.brand:hover{color:#fff;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(0,214,255,.9),rgba(255,106,42,.85));
  color:#04121A;font-size:1.05rem;
  box-shadow:0 0 0 1px rgba(0,214,255,.35),0 0 26px rgba(0,214,255,.35);
  flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-weight:800;font-size:1.06rem;letter-spacing:-.01em;}
.brand-sub{font-size:.62rem;letter-spacing:.22em;color:var(--text-3);}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:var(--pill);
  color:var(--text-2);font-size:.95rem;font-weight:500;
  border:1px solid transparent;transition:all .22s ease;
}
.nav-link i{font-size:.82rem;opacity:.85;}
.nav-link:hover{color:#fff;background:rgba(0,214,255,.10);border-color:var(--line);}
.nav-link.active{
  color:#04121A;background:linear-gradient(120deg,var(--brand),#59E8FF);
  border-color:transparent;box-shadow:0 0 22px var(--brand-glow);font-weight:700;
}
.nav-link.active i{opacity:1;}
.nav-actions{display:flex;align-items:center;gap:10px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:none;border-radius:var(--pill);font-weight:700;font-size:.95rem;
  padding:13px 24px;color:#04121A;background:linear-gradient(120deg,var(--brand),#66ECFF);
  box-shadow:0 0 0 1px rgba(0,214,255,.4),0 14px 34px rgba(0,214,255,.22);
  transition:transform .2s ease,box-shadow .25s ease,filter .2s ease,background .25s ease;
  text-align:center;line-height:1.2;
}
.btn:hover{transform:translateY(-2px);filter:brightness(1.08);color:#04121A;box-shadow:0 0 0 1px rgba(0,214,255,.55),0 18px 46px rgba(0,214,255,.34);}
.btn:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--glass);color:var(--text);
  border:1px solid var(--line);box-shadow:none;backdrop-filter:blur(16px);
}
.btn-ghost:hover{color:#fff;border-color:var(--brand);box-shadow:0 0 24px rgba(0,214,255,.25);}
.btn-accent{
  background:linear-gradient(120deg,var(--accent),#FF8B52);color:#1A0A02;
  box-shadow:0 0 0 1px rgba(255,106,42,.45),0 14px 34px rgba(255,106,42,.24);
}
.btn-accent:hover{color:#1A0A02;box-shadow:0 0 0 1px rgba(255,106,42,.6),0 18px 44px rgba(255,106,42,.32);}
.btn-sm{padding:10px 18px;font-size:.88rem;}
.btn-lg{padding:16px 32px;font-size:1.02rem;}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text);font-size:1.05rem;
}
.mobile-drawer{
  position:fixed;inset:0;z-index:200;background:rgba(5,9,18,.97);
  backdrop-filter:blur(20px);padding:26px 22px 34px;display:none;flex-direction:column;gap:8px;
}
.mobile-drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:44px;height:44px;border-radius:12px;background:var(--glass);border:1px solid var(--line);color:var(--text);font-size:1.1rem;}
.drawer-link{
  display:flex;align-items:center;gap:12px;padding:16px 18px;border-radius:var(--radius);
  color:var(--text);background:rgba(16,32,56,.5);border:1px solid var(--line-soft);font-weight:600;
}
.drawer-link:hover{color:#fff;border-color:var(--line);}
.drawer-link.active{background:rgba(0,214,255,.14);border-color:var(--line);color:#fff;}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding-top:22px;}

/* ---------- 文章头 ---------- */
.page-top-pad{padding-top:120px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:.85rem;color:var(--text-3);margin-bottom:26px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--text);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(120deg,rgba(16,32,56,.92),rgba(5,9,18,.94)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  padding:52px 48px;
  margin-bottom:56px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(0,214,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(0,214,255,.06) 1px,transparent 1px);
  background-size:56px 56px;opacity:.55;pointer-events:none;
}
.article-hero > *{position:relative;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--pill);font-size:.78rem;font-weight:700;letter-spacing:.04em;
  background:rgba(0,214,255,.12);color:var(--brand);border:1px solid var(--line);
}
.badge-accent{background:rgba(255,106,42,.14);color:#FFB18A;border-color:rgba(255,106,42,.32);}
.article-hero h1{
  font-size:clamp(2rem,4vw,3rem);margin:20px 0 16px;line-height:1.22;
}
.article-lead{
  color:var(--text-2);font-size:1.02rem;line-height:1.9;max-width:820px;margin-bottom:26px;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;
  font-size:.86rem;color:var(--text-3);
  border-top:1px solid var(--line-soft);padding-top:20px;
}
.article-meta span{display:inline-flex;align-items:center;gap:8px;}
.article-meta i{color:var(--brand);font-size:.82rem;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.tag{
  padding:5px 13px;border-radius:var(--pill);font-size:.78rem;color:var(--text-2);
  background:rgba(16,32,56,.6);border:1px solid var(--line-soft);
}
.tag:hover{color:#fff;border-color:var(--line);}

/* ---------- 正文 ---------- */
.layout-reading{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;}
.article-body{
  max-width:840px;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-lg);
  padding:46px 48px;
  box-shadow:var(--shadow-soft);
  backdrop-filter:blur(16px);
  font-size:1.04rem;line-height:1.9;color:#DCE9F8;
}
.article-body h2{
  font-size:clamp(1.4rem,2.4vw,1.85rem);margin:1.6em 0 .7em;position:relative;padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--accent));box-shadow:0 0 18px var(--brand-glow);
}
.article-body h3{font-size:1.22rem;margin:1.4em 0 .6em;color:#fff;}
.article-body p{margin:0 0 1.15em;}
.article-body ul,.article-body ol{padding-left:1.3em;margin:0 0 1.3em;}
.article-body li{margin-bottom:.55em;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--accent);font-weight:700;}
.article-body blockquote{
  margin:1.6em 0;padding:20px 24px;border-left:3px solid var(--brand);
  background:rgba(0,214,255,.07);border-radius:0 var(--radius) var(--radius) 0;color:var(--text);
}
.article-body img{border-radius:var(--radius);margin:1.5em 0;box-shadow:var(--shadow-soft);}
.article-body a{text-decoration:underline;text-underline-offset:3px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:.95rem;display:block;overflow-x:auto;}
.article-body th,.article-body td{border:1px solid var(--line-soft);padding:12px 14px;text-align:left;}
.article-body th{background:rgba(0,214,255,.08);color:#fff;font-weight:700;}
.article-body pre{background:rgba(5,9,18,.85);border:1px solid var(--line-soft);border-radius:var(--radius);padding:18px;overflow-x:auto;font-size:.9rem;}
.article-body code{color:#8CE9FF;background:rgba(0,214,255,.08);padding:2px 6px;border-radius:6px;font-size:.92em;}
.empty-state{
  text-align:center;padding:64px 28px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px dashed var(--line);color:var(--text-2);
}
.empty-state i{font-size:2.2rem;color:var(--brand);display:block;margin-bottom:18px;}
.empty-state h2{font-size:1.3rem;margin-bottom:10px;}
.empty-state .btn{margin-top:20px;}

.aside-card{
  background:var(--glass);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:26px 24px;margin-bottom:22px;backdrop-filter:blur(14px);
  position:relative;overflow:hidden;
}
.aside-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));opacity:.85;
}
.aside-card h3{font-size:1.05rem;margin-bottom:14px;}
.aside-card p{font-size:.9rem;color:var(--text-2);margin-bottom:18px;line-height:1.8;}
.aside-list{list-style:none;padding:0;margin:0 0 18px;}
.aside-list li{margin-bottom:12px;}
.aside-list a{display:flex;align-items:center;gap:10px;color:var(--text-2);font-size:.92rem;}
.aside-list a:hover{color:var(--brand);}
.aside-list i{color:var(--brand);font-size:.75rem;}
.aside-stat{display:flex;justify-content:space-between;font-size:.86rem;color:var(--text-3);padding:9px 0;border-bottom:1px dashed var(--line-soft);}
.aside-stat:last-child{border-bottom:none;}
.aside-stat strong{color:var(--text);font-variant-numeric:tabular-nums;}

/* ---------- CTA ---------- */
.cta-band{
  margin:72px 0 0;border-radius:var(--radius-lg);padding:46px 48px;
  background:linear-gradient(120deg,rgba(0,214,255,.14),rgba(255,106,42,.12)),var(--glass-strong);
  border:1px solid var(--line);box-shadow:var(--shadow);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,214,255,.28),transparent 68%);pointer-events:none;
}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:8px;}
.cta-band p{color:var(--text-2);margin:0;font-size:.98rem;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;}

/* ---------- 相关推荐 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.post-card{
  background:var(--glass);border:1px solid var(--line-soft);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line);box-shadow:0 26px 60px rgba(0,0,0,.5);}
.post-thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg-2);}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease;}
.post-card:hover .post-thumb img{transform:scale(1.06);}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.post-cat{display:inline-flex;align-items:center;gap:6px;font-size:.75rem;color:var(--brand);margin-bottom:12px;font-weight:600;}
.post-card h3{font-size:1.08rem;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card h3 a{color:#fff;}
.post-card h3 a:hover{color:var(--brand);}
.post-card p{font-size:.9rem;color:var(--text-2);line-height:1.8;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:.82rem;color:var(--text-3);}
.post-foot i{color:var(--brand);margin-right:6px;}
.back-row{margin-top:40px;display:flex;flex-wrap:wrap;gap:16px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,32,56,.6),rgba(5,9,18,.95));
  position:relative;padding:64px 0 30px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--accent),transparent);
  opacity:.75;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-col h4{font-size:1rem;margin-bottom:18px;color:#fff;}
.footer-col p{font-size:.9rem;color:var(--text-2);line-height:1.85;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{color:var(--text-2);font-size:.92rem;}
.footer-col ul a:hover{color:var(--brand);}
.footer-contact{display:flex;align-items:center;gap:10px;font-size:.9rem;color:var(--text-2);margin-bottom:14px;}
.footer-contact i{color:var(--brand);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:.82rem;color:var(--text-3);
}

.mobile-download-bar{display:none;}

@media (max-width:1024px){
  .container,.nav-wrap{padding-left:24px;padding-right:24px;}
  .nav-menu{display:none;}
  .nav-actions .btn-ghost{display:none;}
  .burger{display:inline-flex;align-items:center;justify-content:center;}
  .layout-reading{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .page-top-pad{padding-top:104px;}
  .article-hero{padding:34px 24px;margin-bottom:36px;}
  .article-lead{font-size:.96rem;}
  .article-body{padding:28px 22px;font-size:1rem;}
  .cta-band{padding:32px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .post-grid{grid-template-columns:1fr;}
  .breadcrumb .current{white-space:normal;}
  .footer-grid{grid-template-columns:1fr;}
  .mobile-download-bar{
    display:flex;position:fixed;bottom:0;left:0;right:0;z-index:110;
    padding:12px 16px;gap:10px;
    background:rgba(5,9,18,.94);border-top:1px solid var(--line);backdrop-filter:blur(16px);
  }
  .mobile-download-bar .btn{flex:1;padding:12px 14px;font-size:.9rem;}
  body{padding-bottom:78px;}
  .site-footer{margin-top:64px;}
}
@media (max-width:480px){
  .container,.nav-wrap{padding-left:18px;padding-right:18px;}
  .article-hero h1{font-size:1.7rem;}
  .brand-sub{display:none;}
  .article-body{padding:22px 16px;}
  .btn{padding:12px 18px;font-size:.9rem;}
}

/* roulang page: category1 */
:root{
  --bg-0:#050912;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --brand:#00D6FF;
  --brand-soft:rgba(0,214,255,.35);
  --accent:#FF6A2A;
  --signal:#9BFF57;
  --glass:rgba(12,24,42,.66);
  --glass-strong:rgba(16,32,56,.78);
  --line:rgba(0,214,255,.18);
  --line-strong:rgba(0,214,255,.42);
  --text:#EAF4FF;
  --muted:#9BB0C9;
  --dim:#6C819A;
  --radius-card:18px;
  --radius-btn:999px;
  --radius-input:12px;
  --radius-shot:20px;
  --shadow:0 24px 80px rgba(0,0,0,.45);
  --container:1200px;
  --gap:24px;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  padding:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .25s ease,border-color .25s ease,opacity .25s ease;}
a:hover{color:#7FE9FF;}
h1,h2,h3,h4,h5{margin:0;color:var(--text);font-weight:800;line-height:1.25;letter-spacing:-.02em;}
p{margin:0 0 1em;color:var(--muted);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:rgba(0,214,255,.32);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

.section{padding:96px 0;position:relative;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(0,214,255,.07);
  margin-bottom:18px;
}
.eyebrow i{font-size:12px;}
.section-head h2{
  font-size:clamp(1.7rem,3vw,2.4rem);
  margin-bottom:16px;
}
.section-head p{font-size:16.5px;color:var(--muted);margin-bottom:0;}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .25s ease,box-shadow .3s ease,background .3s ease,border-color .3s ease,color .25s ease,filter .3s ease;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
.btn-primary{
  background:linear-gradient(120deg,#00D6FF,#39C2FF);
  color:#03141D;
  box-shadow:0 0 0 1px rgba(0,214,255,.45),0 12px 34px rgba(0,214,255,.28);
}
.btn-primary:hover{
  color:#03141D;filter:brightness(1.07);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(0,214,255,.75),0 20px 46px rgba(0,214,255,.42);
}
.btn-ghost{
  background:rgba(12,24,42,.6);
  color:var(--text);
  border-color:rgba(0,214,255,.28);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{
  color:var(--brand);
  border-color:var(--brand);
  transform:translateY(-2px);
  box-shadow:0 14px 34px rgba(0,214,255,.18);
}
.btn-accent{
  background:linear-gradient(120deg,#FF6A2A,#FF9247);
  color:#210B02;
  box-shadow:0 12px 32px rgba(255,106,42,.3);
}
.btn-accent:hover{color:#210B02;filter:brightness(1.06);transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-lg{padding:17px 34px;font-size:16.5px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(0,214,255,.08);
  color:var(--brand);
  letter-spacing:.02em;
}
.badge-accent{color:var(--accent);border-color:rgba(255,106,42,.34);background:rgba(255,106,42,.1);}
.badge-signal{color:var(--signal);border-color:rgba(155,255,87,.32);background:rgba(155,255,87,.09);}
.tag{
  display:inline-flex;align-items:center;
  font-size:12.5px;color:var(--muted);
  padding:4px 11px;border-radius:8px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.07);
}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;
  transition:background .35s ease,border-color .35s ease,backdrop-filter .35s ease;
  background:linear-gradient(180deg,rgba(5,9,18,.92),rgba(5,9,18,.35));
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(10,18,32,.9);
  backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
}
.nav-wrap{
  max-width:1320px;margin:0 auto;
  padding:0 28px;height:76px;
  display:flex;align-items:center;gap:26px;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(0,214,255,.28),rgba(255,106,42,.22));
  border:1px solid rgba(0,214,255,.4);
  color:var(--brand);font-size:17px;
  box-shadow:0 0 22px rgba(0,214,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:17.5px;font-weight:800;color:var(--text);letter-spacing:-.01em;}
.brand-sub{font-size:10px;letter-spacing:.24em;color:var(--dim);font-weight:600;}
.nav-menu{display:flex;align-items:center;gap:6px;flex:1;}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 15px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--muted);
  position:relative;
  transition:color .25s ease,background .25s ease;
}
.nav-link i{font-size:13px;opacity:.85;}
.nav-link:hover{color:var(--text);background:rgba(0,214,255,.09);}
.nav-link.active{
  color:var(--brand);
  background:rgba(0,214,255,.11);
  box-shadow:inset 0 0 0 1px rgba(0,214,255,.28);
}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:22px;height:2px;border-radius:2px;
  transform:translateX(-50%);
  background:var(--brand);
  box-shadow:0 0 12px var(--brand-soft);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.burger{
  display:none;
  width:44px;height:44px;border-radius:13px;
  background:rgba(12,24,42,.7);
  border:1px solid var(--line);
  color:var(--text);font-size:17px;cursor:pointer;
  align-items:center;justify-content:center;
  transition:border-color .25s ease,color .25s ease;
}
.burger:hover{border-color:var(--brand);color:var(--brand);}
.burger:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.mobile-drawer{
  position:fixed;inset:76px 0 0 0;z-index:190;
  background:rgba(5,9,18,.97);
  backdrop-filter:blur(20px);
  padding:28px 24px 40px;
  display:flex;flex-direction:column;gap:8px;
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity .28s ease,transform .28s ease;
  overflow-y:auto;
}
.mobile-drawer.open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer-link{
  display:flex;align-items:center;gap:12px;
  padding:16px 18px;border-radius:14px;
  font-size:16.5px;font-weight:700;color:var(--text);
  border:1px solid rgba(255,255,255,.06);
  background:var(--glass);
}
.drawer-link i{color:var(--brand);font-size:14px;width:18px;}
.drawer-link.active{color:var(--brand);border-color:var(--line-strong);}
.drawer-cta{margin-top:18px;display:flex;flex-direction:column;gap:12px;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:158px 0 88px;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 560px at 12% 18%,rgba(0,214,255,.2),transparent 62%),
    radial-gradient(700px 500px at 88% 78%,rgba(255,106,42,.14),transparent 60%),
    linear-gradient(180deg,rgba(5,9,18,.82),rgba(5,9,18,.96) 78%,var(--bg-0));
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(0,214,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,214,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.crumbs{
  display:flex;align-items:center;gap:9px;flex-wrap:wrap;
  font-size:13.5px;color:var(--dim);margin-bottom:22px;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand);}
.crumbs span.sep{opacity:.5;}
.crumbs .current{color:var(--brand);font-weight:600;}
.hero h1{
  font-size:clamp(2.4rem,5vw,3.6rem);
  line-height:1.18;
  margin-bottom:20px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,#00D6FF,#7FE9FF 45%,#FF6A2A);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;
}
.hero-lead{
  font-size:17.5px;color:var(--muted);
  max-width:620px;margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}

.metrics{
  display:flex;flex-wrap:wrap;gap:12px;
}
.metric{
  flex:1 1 150px;
  padding:16px 18px;
  border-radius:14px;
  background:var(--glass);
  border:1px solid rgba(0,214,255,.14);
  backdrop-filter:blur(16px);
}
.metric strong{
  display:block;font-size:22px;font-weight:800;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.metric span{font-size:13px;color:var(--dim);}

.hero-visual{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  border:1px solid rgba(0,214,255,.22);
  background:var(--glass-strong);
  box-shadow:0 30px 90px rgba(0,0,0,.55),0 0 0 1px rgba(0,214,255,.1) inset;
  backdrop-filter:blur(18px);
}
.hero-visual::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--accent),transparent);
  opacity:.85;
}
.hero-visual img{width:100%;height:auto;display:block;}
.hero-visual .visual-bar{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding:14px 18px;
  border-top:1px solid rgba(0,214,255,.14);
  font-size:13px;color:var(--muted);
}
.live-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 0 4px rgba(155,255,87,.16);
  display:inline-block;
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(155,255,87,.16);}
  50%{box-shadow:0 0 0 9px rgba(155,255,87,.03);}
}

/* ============ 功能矩阵（非对称） ============ */
.feature-matrix{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:20px;
}
.fm-item{
  position:relative;
  padding:30px 28px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid rgba(0,214,255,.14);
  backdrop-filter:blur(16px);
  overflow:hidden;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.fm-item:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 26px 56px rgba(0,0,0,.42),0 0 0 1px rgba(0,214,255,.18) inset;
}
.fm-item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(0,214,255,.8),transparent);
  opacity:.55;
}
.fm-1{grid-column:span 4;}
.fm-2{grid-column:span 2;}
.fm-3{grid-column:span 2;}
.fm-4{grid-column:span 4;}
.fm-5{grid-column:span 3;}
.fm-6{grid-column:span 3;}

.fm-icon{
  width:48px;height:48px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:19px;color:var(--brand);
  background:rgba(0,214,255,.1);
  border:1px solid rgba(0,214,255,.26);
  margin-bottom:18px;
}
.fm-icon.accent{color:var(--accent);background:rgba(255,106,42,.1);border-color:rgba(255,106,42,.3);}
.fm-item h3{font-size:1.24rem;margin-bottom:10px;}
.fm-item p{font-size:15.5px;margin-bottom:14px;color:var(--muted);}
.fm-more{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:700;color:var(--brand);
}
.fm-more i{font-size:11px;transition:transform .25s ease;}
.fm-item:hover .fm-more i{transform:translateX(4px);}
.fm-visual{
  grid-column:span 4;
  position:relative;border-radius:var(--radius-card);
  overflow:hidden;border:1px solid rgba(0,214,255,.18);
  min-height:260px;
  background:var(--bg-2);
}
.fm-visual img{width:100%;height:100%;object-fit:cover;min-height:260px;}
.fm-visual .fm-visual-text{
  position:absolute;inset:auto 0 0 0;
  padding:26px 26px 24px;
  background:linear-gradient(180deg,transparent,rgba(5,9,18,.94) 62%);
}
.fm-visual .fm-visual-text h3{font-size:1.3rem;margin-bottom:8px;}
.fm-visual .fm-visual-text p{margin:0;font-size:15px;color:var(--muted);}

/* ============ 截图轮播 ============ */
.shots-wrap{position:relative;}
.shots-track{
  display:flex;gap:22px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 22px;
  scrollbar-width:thin;
  scrollbar-color:rgba(0,214,255,.4) transparent;
}
.shots-track::-webkit-scrollbar{height:6px;}
.shots-track::-webkit-scrollbar-thumb{background:rgba(0,214,255,.35);border-radius:99px;}
.shots-track::-webkit-scrollbar-track{background:rgba(255,255,255,.05);border-radius:99px;}
.shot{
  flex:0 0 372px;
  scroll-snap-align:start;
  border-radius:var(--radius-shot);
  background:var(--glass-strong);
  border:1px solid rgba(0,214,255,.16);
  overflow:hidden;
  backdrop-filter:blur(16px);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.shot:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 26px 60px rgba(0,0,0,.45);}
.shot-frame{
  position:relative;
  border-bottom:1px solid rgba(0,214,255,.12);
  background:var(--bg-2);
}
.shot-frame img{width:100%;height:230px;object-fit:cover;}
.shot-frame .frame-dots{
  display:flex;gap:5px;padding:10px 14px 0;
}
.shot-frame .frame-dots span{
  width:7px;height:7px;border-radius:50%;
  background:rgba(0,214,255,.3);
}
.shot-body{padding:20px 22px 24px;}
.shot-body h3{font-size:1.1rem;margin-bottom:8px;}
.shot-body p{font-size:14.5px;margin:0;color:var(--muted);}
.shots-controls{
  display:flex;align-items:center;gap:12px;justify-content:flex-end;
  margin-top:4px;
}
.shot-nav{
  width:46px;height:46px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(12,24,42,.7);
  border:1px solid rgba(0,214,255,.24);
  color:var(--brand);font-size:15px;cursor:pointer;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.shot-nav:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,214,255,.2);}
.shot-nav:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ============ 系统要求 ============ */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.spec-card{
  padding:24px 26px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid rgba(0,214,255,.14);
  backdrop-filter:blur(14px);
  transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;
}
.spec-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:0 22px 50px rgba(0,0,0,.38);}
.spec-card h3{
  font-size:1.05rem;margin-bottom:16px;
  display:flex;align-items:center;gap:10px;
}
.spec-card h3 i{color:var(--brand);font-size:15px;}
.spec-list{display:grid;gap:2px;}
.spec-row{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:11px 0;
  border-bottom:1px dashed rgba(255,255,255,.07);
}
.spec-row:last-child{border-bottom:0;padding-bottom:0;}
.spec-row dt{font-size:14.5px;color:var(--dim);flex-shrink:0;}
.spec-row dd{margin:0;font-size:14.5px;color:var(--text);text-align:right;font-variant-numeric:tabular-nums;}
.spec-note{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  padding:18px 22px;border-radius:14px;
  background:rgba(0,214,255,.06);
  border:1px solid rgba(0,214,255,.18);
  font-size:14.5px;color:var(--muted);
}
.spec-note i{color:var(--brand);}

/* ============ 下载区 ============ */
.download-panel{
  position:relative;
  padding:48px 46px;
  border-radius:26px;
  background:var(--glass-strong);
  border:1px solid rgba(0,214,255,.22);
  backdrop-filter:blur(20px);
  box-shadow:0 30px 90px rgba(0,0,0,.5);
  overflow:hidden;
}
.download-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--accent),transparent);
}
.download-panel h2{font-size:clamp(1.6rem,2.8vw,2.2rem);margin-bottom:14px;}
.download-panel > p{max-width:640px;}
.platform-grid{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:14px;margin:30px 0 24px;
}
.platform-btn{
  display:flex;align-items:center;gap:14px;
  padding:16px 20px;border-radius:14px;
  background:rgba(5,9,18,.55);
  border:1px solid rgba(0,214,255,.2);
  color:var(--text);font-weight:700;font-size:15px;
  transition:border-color .28s ease,transform .28s ease,box-shadow .28s ease,background .28s ease;
}
.platform-btn i{
  font-size:19px;color:var(--brand);width:26px;text-align:center;
}
.platform-btn small{
  display:block;font-size:12.5px;font-weight:500;color:var(--dim);
  margin-top:2px;
}
.platform-btn:hover{
  transform:translateY(-3px);
  border-color:var(--brand);
  background:rgba(0,214,255,.08);
  box-shadow:0 18px 40px rgba(0,214,255,.18);
  color:var(--text);
}
.download-secondary{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.qr-box{
  display:flex;align-items:center;gap:16px;
  padding:16px 20px;border-radius:16px;
  background:rgba(5,9,18,.5);
  border:1px dashed rgba(0,214,255,.3);
  margin-top:26px;
}
.qr-code{
  width:88px;height:88px;border-radius:10px;flex-shrink:0;
  background:
    repeating-linear-gradient(90deg,rgba(0,214,255,.85) 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,rgba(0,214,255,.85) 0 6px,transparent 6px 12px),
    #061019;
  background-blend-mode:screen;
  border:1px solid rgba(0,214,255,.4);
  box-shadow:0 0 22px rgba(0,214,255,.22);
}
.qr-text strong{display:block;font-size:15.5px;color:var(--text);margin-bottom:4px;}
.qr-text span{font-size:13.5px;color:var(--dim);}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto;}
.accordion{
  background:transparent;
  border:0;
  margin:0;
}
.accordion .accordion-item{
  background:var(--glass);
  border:1px solid rgba(0,214,255,.14);
  border-radius:16px;
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  transition:border-color .3s ease,box-shadow .3s ease;
}
.accordion .accordion-item:hover{border-color:var(--line-strong);}
.accordion .accordion-item.is-active{
  border-color:var(--line-strong);
  box-shadow:0 20px 46px rgba(0,0,0,.4);
}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  font-size:17px;font-weight:700;color:var(--text);
  background:transparent;
  border:0;
  border-bottom:0;
  transition:color .25s ease;
}
.accordion .accordion-title:hover,
.accordion .accordion-title:focus{
  background:transparent;
  color:var(--brand);
}
.accordion .accordion-title::before{
  content:"\f067";
  font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--brand);
  order:2;
  transition:transform .3s ease;
}
.accordion .accordion-item.is-active .accordion-title::before{transform:rotate(45deg);}
.accordion .accordion-content{
  padding:0 24px 22px;
  background:transparent;
  border:0;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.85;
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  padding:56px 48px;
  border-radius:26px;
  text-align:center;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border:1px solid rgba(0,214,255,.2);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,9,18,.86),rgba(5,9,18,.94));
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.2rem);margin-bottom:14px;}
.cta-band p{max-width:600px;margin:0 auto 28px;}
.cta-band .btn-row{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--bg-1);
  padding:72px 0 32px;
  margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,214,255,.7),rgba(255,106,42,.5),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-col p{font-size:14.5px;color:var(--dim);margin:0;}
.footer-col h4{
  font-size:15px;font-weight:700;color:var(--text);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{
  font-size:14.5px;color:var(--muted);
  transition:color .25s ease,padding-left .25s ease;
}
.footer-col ul a:hover{color:var(--brand);padding-left:4px;}
.footer-contact{
  display:flex;align-items:center;gap:10px;
  font-size:14.5px;color:var(--muted);margin-bottom:12px;
}
.footer-contact i{color:var(--brand);width:18px;text-align:center;font-size:14px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.07);
  font-size:13.5px;color:var(--dim);
}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .nav-menu{display:none;}
  .burger{display:inline-flex;}
  .nav-actions .btn-ghost{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .feature-matrix{grid-template-columns:repeat(2,1fr);}
  .fm-1,.fm-2,.fm-3,.fm-4,.fm-5,.fm-6,.fm-visual{grid-column:span 1;}
  .fm-visual{grid-column:span 2;}
  .section{padding:76px 0;}
}

@media screen and (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .nav-wrap{padding:0 18px;height:68px;gap:14px;}
  .brand-sub{display:none;}
  .mobile-drawer{inset:68px 0 0 0;}
  .nav-actions .btn-sm{padding:9px 14px;font-size:13.5px;}
  .hero{padding:120px 0 62px;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-visual{margin-top:36px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:34px;}
  .feature-matrix{grid-template-columns:1fr;gap:16px;}
  .fm-visual{grid-column:span 1;min-height:220px;}
  .fm-visual img{min-height:220px;}
  .fm-item{padding:24px 22px;}
  .spec-grid{grid-template-columns:1fr;}
  .shot{flex:0 0 280px;}
  .shot-frame img{height:176px;}
  .download-panel{padding:34px 24px;border-radius:20px;}
  .platform-grid{grid-template-columns:1fr;}
  .cta-band{padding:44px 24px;border-radius:20px;}
  .cta-band .btn-row .btn{width:100%;}
  .qr-box{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:34px;}
  .footer-bottom{flex-direction:column;}
  .shots-controls{justify-content:center;}
}

@media screen and (max-width:520px){
  .hero h1{font-size:2rem;}
  .section-head h2{font-size:1.5rem;}
  .metric{flex:1 1 100%;}
  .spec-row{flex-direction:column;gap:2px;}
  .spec-row dd{text-align:left;}
  .accordion .accordion-title{font-size:15.5px;padding:17px 18px;}
  .accordion .accordion-content{padding:0 18px 18px;font-size:15px;}
  .eyebrow{font-size:12px;letter-spacing:.1em;}
  .btn{padding:14px 22px;min-height:44px;}
  .nav-actions .btn-primary span{display:none;}
}

/* roulang page: category2 */
:root{
  --bg-0:#050912;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --brand:#00D6FF;
  --brand-soft:rgba(0,214,255,.12);
  --brand-glow:rgba(0,214,255,.35);
  --accent:#FF6A2A;
  --signal:#9BFF57;
  --glass:rgba(12,24,42,.66);
  --glass-strong:rgba(16,32,56,.78);
  --line:rgba(0,214,255,.18);
  --line-soft:rgba(155,176,201,.16);
  --text:#EAF4FF;
  --text-2:#9BB0C9;
  --text-3:#6C819A;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --shadow:0 24px 80px rgba(0,0,0,.45);
  --container:1200px;
  --gap:96px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  background:
    radial-gradient(1200px 600px at 12% -8%, rgba(0,214,255,.12), transparent 60%),
    radial-gradient(900px 520px at 92% 6%, rgba(255,106,42,.10), transparent 62%),
    var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body, p, h1, h2, h3, h4, h5, h6, li, td, th, label, button, input, textarea, select{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:var(--brand);text-decoration:none;transition:color .25s var(--ease),opacity .25s var(--ease);}
a:hover{color:#7BE8FF;}
p{margin:0 0 1em;color:var(--text-2);}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--text);font-weight:800;letter-spacing:-.02em;line-height:1.24;}
h1{font-size:clamp(2.4rem,5vw,3.6rem);}
h2{font-size:clamp(1.7rem,3vw,2.4rem);}
h3{font-size:clamp(1.15rem,1.6vw,1.4rem);font-weight:700;}
h4{font-size:1.05rem;font-weight:700;}
ul{margin:0;padding:0;list-style:none;}
strong{color:var(--text);}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:var(--gap) 0;position:relative;}
.section-tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;font-weight:700;margin-bottom:14px;
}
.section-head p{font-size:1.03rem;margin:0;}
.lead{font-size:1.08rem;color:var(--text-2);}

/* ============ HEADER / NAV ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  background:rgba(5,9,18,.62);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(0,214,255,.10);
  transition:background .3s var(--ease),border-color .3s var(--ease);
}
.site-header.scrolled{background:rgba(5,9,18,.88);border-bottom-color:var(--line);}
.nav-wrap{
  max-width:var(--container);margin:0 auto;padding:0 32px;
  height:78px;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--text);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(0,214,255,.22),rgba(255,106,42,.18));
  border:1px solid var(--line);color:var(--brand);font-size:1rem;
  box-shadow:0 0 22px rgba(0,214,255,.22) inset;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-weight:800;font-size:1.06rem;letter-spacing:-.01em;color:#fff;}
.brand-sub{font-size:.63rem;letter-spacing:.22em;color:var(--text-3);}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1 1 auto;}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:999px;font-size:.95rem;color:var(--text-2);
  border:1px solid transparent;white-space:nowrap;
}
.nav-link i{font-size:.82rem;color:var(--text-3);transition:color .25s var(--ease);}
.nav-link:hover{color:#fff;background:rgba(0,214,255,.07);border-color:rgba(0,214,255,.18);}
.nav-link:hover i{color:var(--brand);}
.nav-link.active{color:#fff;background:rgba(0,214,255,.12);border-color:var(--line);box-shadow:0 0 0 1px rgba(0,214,255,.08),0 8px 26px rgba(0,214,255,.14);}
.nav-link.active i{color:var(--brand);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;font-size:.96rem;font-weight:700;
  border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:transform .22s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn i{font-size:.9rem;}
.btn-sm{padding:10px 18px;font-size:.89rem;}
.btn-primary{
  background:linear-gradient(135deg,#00D6FF,#22A8FF);color:#04121C;
  box-shadow:0 10px 30px rgba(0,214,255,.32),0 0 0 1px rgba(0,214,255,.4) inset;
}
.btn-primary:hover{color:#04121C;transform:translateY(-2px);box-shadow:0 16px 42px rgba(0,214,255,.45);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--glass);color:var(--text);border-color:var(--line);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{color:#fff;border-color:var(--brand);box-shadow:0 0 20px rgba(0,214,255,.22);}
.btn-accent{
  background:linear-gradient(135deg,#FF6A2A,#FF9147);color:#210D03;
  box-shadow:0 10px 30px rgba(255,106,42,.3);
}
.btn-accent:hover{color:#210D03;transform:translateY(-2px);box-shadow:0 16px 40px rgba(255,106,42,.42);}
.btn-block{width:100%;}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;cursor:pointer;
}
.burger:hover{border-color:var(--brand);color:var(--brand);}

/* ============ HERO ============ */
.page-hero{
  position:relative;padding:150px 0 84px;overflow:hidden;
  background-image:linear-gradient(115deg,rgba(5,9,18,.94) 12%,rgba(5,9,18,.72) 58%,rgba(5,9,18,.92) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid rgba(0,214,255,.12);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(0,214,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(0,214,255,.05) 1px,transparent 1px);
  background-size:64px 64px;opacity:.6;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:10px;font-size:.86rem;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:var(--text-3);opacity:.7;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
  background:rgba(0,214,255,.1);border:1px solid var(--line);color:var(--brand);
  font-size:.82rem;font-weight:700;letter-spacing:.04em;margin-bottom:20px;
}
.hero-badge i{font-size:.75rem;}
.page-hero h1{max-width:900px;margin-bottom:20px;}
.page-hero h1 em{font-style:normal;color:var(--brand);text-shadow:0 0 26px var(--brand-glow);}
.page-hero .hero-sub{max-width:720px;font-size:1.08rem;color:var(--text-2);margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:14px;
}
.metric{
  flex:1 1 160px;min-width:140px;
  padding:16px 18px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line-soft);
  backdrop-filter:blur(14px);
}
.metric .num{
  display:block;font-size:1.4rem;font-weight:800;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.metric .lbl{display:block;font-size:.82rem;color:var(--text-3);letter-spacing:.03em;}

/* ============ SEARCH ============ */
.search-panel{
  margin-top:-38px;position:relative;z-index:5;
}
.search-card{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  padding:20px 22px;border-radius:var(--r-lg);
  background:var(--glass-strong);border:1px solid var(--line);
  backdrop-filter:blur(18px);box-shadow:var(--shadow);
}
.search-card::before{
  content:"";position:absolute;left:22px;right:22px;top:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));border-radius:4px;opacity:.7;
}
.search-field{flex:1 1 320px;display:flex;align-items:center;gap:12px;background:rgba(5,9,18,.6);border:1px solid var(--line-soft);border-radius:var(--r-sm);padding:0 16px;height:52px;}
.search-field i{color:var(--text-3);}
.search-field input{
  flex:1;height:50px;background:transparent;border:0;color:var(--text);font-size:.98rem;outline:none;
}
.search-field input::placeholder{color:var(--text-3);}
.search-field:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(0,214,255,.14);}
.search-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag-pill{
  font-size:.82rem;padding:7px 14px;border-radius:999px;
  background:rgba(0,214,255,.08);border:1px solid var(--line-soft);color:var(--text-2);
}
.tag-pill:hover{color:#fff;border-color:var(--brand);background:rgba(0,214,255,.14);}

/* ============ LAYOUT: TOC + STEPS ============ */
.guide-layout{padding:84px 0 20px;}
.toc-wrap{position:relative;}
.toc{
  position:sticky;top:104px;
  padding:22px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line-soft);
  backdrop-filter:blur(16px);
}
.toc h3{font-size:.95rem;letter-spacing:.12em;color:var(--text-3);text-transform:uppercase;margin-bottom:16px;font-weight:700;}
.toc ol{counter-reset:toc;display:flex;flex-direction:column;gap:4px;}
.toc li a{
  display:flex;align-items:flex-start;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:.92rem;color:var(--text-2);
  border-left:2px solid transparent;
}
.toc li a .idx{
  font-size:.76rem;color:var(--text-3);font-variant-numeric:tabular-nums;
  min-width:18px;padding-top:2px;
}
.toc li a:hover{background:rgba(0,214,255,.08);color:#fff;border-left-color:var(--brand);}
.toc li a.is-current{color:#fff;background:rgba(0,214,255,.1);border-left-color:var(--brand);}
.toc-foot{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line-soft);
  font-size:.84rem;color:var(--text-3);
}

.steps{display:flex;flex-direction:column;gap:22px;}
.step-card{
  position:relative;padding:26px 26px 24px;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(16,27,46,.85),rgba(10,18,32,.72));
  border:1px solid var(--line-soft);box-shadow:0 18px 50px rgba(0,0,0,.32);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
  overflow:hidden;
}
.step-card::before{
  content:"";position:absolute;left:0;top:0;height:2px;width:100%;
  background:linear-gradient(90deg,rgba(0,214,255,.85),rgba(255,106,42,.7),transparent 78%);
  opacity:.55;
}
.step-card:hover{transform:translateY(-4px);border-color:var(--line);box-shadow:0 26px 70px rgba(0,0,0,.45),0 0 0 1px rgba(0,214,255,.16);}
.step-top{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.step-no{
  flex:0 0 auto;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(0,214,255,.12);border:1px solid var(--line);
  color:var(--brand);font-weight:800;font-size:1.05rem;font-variant-numeric:tabular-nums;
  box-shadow:0 0 20px rgba(0,214,255,.16) inset;
}
.step-top h3{margin:0;font-size:1.18rem;}
.step-body p{margin-bottom:12px;}
.step-body p:last-child{margin-bottom:0;}
.step-shot{
  margin:16px 0 14px;border-radius:16px;overflow:hidden;
  border:1px solid var(--line-soft);background:rgba(5,9,18,.6);
  box-shadow:0 14px 40px rgba(0,0,0,.4);
}
.step-shot img{border-radius:0;width:100%;height:auto;}
.step-tip{
  display:flex;gap:10px;align-items:flex-start;
  padding:12px 14px;border-radius:var(--r-sm);
  background:rgba(155,255,87,.07);border:1px solid rgba(155,255,87,.22);
  font-size:.9rem;color:#CFF3D2;
}
.step-tip i{color:var(--signal);margin-top:4px;}
.step-tip.warn{background:rgba(255,106,42,.08);border-color:rgba(255,106,42,.28);color:#FFD6C2;}
.step-tip.warn i{color:var(--accent);}
.inline-list{margin:0 0 12px;display:flex;flex-direction:column;gap:6px;}
.inline-list li{position:relative;padding-left:20px;font-size:.95rem;color:var(--text-2);}
.inline-list li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px var(--brand-glow);
}

/* ============ MATRIX / PLATFORM CARDS ============ */
.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.platform-card{
  padding:22px;border-radius:var(--r-lg);background:var(--glass);
  border:1px solid var(--line-soft);backdrop-filter:blur(14px);
  transition:transform .26s var(--ease),border-color .26s var(--ease);
}
.platform-card:hover{transform:translateY(-4px);border-color:var(--line);}
.platform-card i{font-size:1.4rem;color:var(--brand);margin-bottom:12px;display:block;}
.platform-card h3{font-size:1.02rem;margin-bottom:8px;}
.platform-card p{font-size:.9rem;margin:0;}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto;}
.accordion{border:0;background:transparent;}
.accordion-item{
  border:1px solid var(--line-soft);border-radius:var(--r-md);margin-bottom:12px;
  background:var(--glass);backdrop-filter:blur(14px);overflow:hidden;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.accordion-item:hover{border-color:var(--line);}
.accordion-item.is-active{border-color:var(--line);box-shadow:0 0 0 1px rgba(0,214,255,.14),0 16px 44px rgba(0,0,0,.34);}
.accordion-title{
  display:flex;align-items:center;gap:14px;padding:20px 22px;
  font-size:1.03rem;font-weight:700;color:var(--text);background:transparent;border:0;
}
.accordion-title::before{display:none;}
.accordion-title .q-ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:rgba(0,214,255,.12);border:1px solid var(--line);color:var(--brand);font-size:.72rem;
  transition:transform .3s var(--ease);
}
.accordion-item.is-active .accordion-title .q-ico{transform:rotate(135deg);}
.accordion-title span{flex:1;}
.accordion-content{padding:0 22px 22px 62px;color:var(--text-2);font-size:.98rem;background:transparent;border:0;}
.accordion-content p:last-child{margin-bottom:0;}

/* ============ CTA ============ */
.cta-band{
  position:relative;border-radius:24px;padding:52px 44px;overflow:hidden;
  background:linear-gradient(120deg,rgba(0,214,255,.14),rgba(255,106,42,.10) 70%,rgba(5,9,18,.4)),
    var(--bg-2);
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,214,255,.24),transparent 68%);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;}
.cta-copy{flex:1 1 480px;}
.cta-copy h2{margin-bottom:12px;}
.cta-copy p{margin:0;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.qr-box{
  width:132px;height:132px;border-radius:16px;flex:0 0 auto;
  border:1px dashed var(--line);background:rgba(5,9,18,.6);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  color:var(--text-3);font-size:.78rem;text-align:center;padding:10px;
}
.qr-box i{font-size:2rem;color:var(--brand);opacity:.75;}

/* ============ PROSE / MISC ============ */
.glass-note{
  padding:22px 24px;border-radius:var(--r-lg);background:var(--glass);
  border:1px solid var(--line-soft);backdrop-filter:blur(14px);
}
.glass-note h3{margin-bottom:10px;}
.glass-note p:last-child{margin-bottom:0;}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:64px 0;}

/* ============ FOOTER ============ */
.site-footer{
  margin-top:56px;padding:64px 0 30px;
  background:linear-gradient(180deg,rgba(10,18,32,.4),rgba(5,9,18,.95));
  border-top:1px solid var(--line);position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(0,214,255,.75),rgba(255,106,42,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-col h4{font-size:.95rem;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col p{font-size:.92rem;color:var(--text-3);margin:0;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:.93rem;color:var(--text-2);}
.footer-col ul a:hover{color:var(--brand);}
.footer-contact{display:flex;align-items:center;gap:10px;font-size:.92rem;color:var(--text-2);margin-bottom:10px;}
.footer-contact i{color:var(--brand);width:16px;text-align:center;}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:.85rem;color:var(--text-3);
}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  .nav-wrap{padding:0 24px;gap:14px;}
  .nav-menu{
    position:fixed;top:78px;left:0;right:0;height:calc(100vh - 78px);
    flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:24px;
    background:rgba(5,9,18,.97);backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
    overflow-y:auto;
  }
  .nav-menu.open{opacity:1;visibility:visible;pointer-events:auto;transform:none;}
  .nav-link{padding:15px 18px;border-radius:14px;font-size:1rem;border-color:rgba(0,214,255,.12);background:rgba(16,27,46,.5);}
  .burger{display:inline-flex;}
  .nav-actions .btn-ghost{display:none;}
  .platform-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .page-hero{padding:130px 0 70px;}
}
@media (max-width:768px){
  :root{--gap:56px;}
  .container{padding:0 20px;}
  .nav-wrap{height:70px;}
  .brand-sub{display:none;}
  .nav-menu{top:70px;height:calc(100vh - 70px);}
  .page-hero{padding:112px 0 60px;}
  .page-hero h1{font-size:2.1rem;}
  .hero-actions .btn{flex:1 1 100%;}
  .metric{flex:1 1 46%;}
  .search-card{padding:18px;flex-direction:column;align-items:stretch;}
  .toc{position:static;padding:18px;margin-bottom:8px;}
  .toc ol{
    flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;
    scroll-snap-type:x mandatory;
  }
  .toc ol li{flex:0 0 auto;scroll-snap-align:start;}
  .toc li a{
    white-space:nowrap;border-left:0;border:1px solid var(--line-soft);border-radius:999px;
    padding:9px 14px;background:rgba(16,27,46,.6);
  }
  .toc li a .txt{max-width:none;}
  .toc-foot{display:none;}
  .guide-layout{padding:56px 0 10px;}
  .step-card{padding:22px 20px 20px;}
  .step-no{width:40px;height:40px;border-radius:12px;font-size:.98rem;}
  .accordion-content{padding:0 18px 20px 18px;}
  .cta-band{padding:34px 22px;border-radius:20px;}
  .cta-actions .btn{flex:1 1 100%;}
  .qr-box{width:100%;height:auto;flex-direction:row;gap:12px;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .platform-grid{grid-template-columns:1fr;}
  .divider{margin:44px 0;}
}
@media (max-width:480px){
  h1{font-size:2rem;}
  .page-hero h1{font-size:1.82rem;}
  h2{font-size:1.5rem;}
  body{font-size:15.5px;}
  .metric{flex:1 1 100%;}
  .btn{padding:12px 18px;}
  .brand-name{font-size:.98rem;}
  .hero-badge{font-size:.76rem;}
}

/* roulang page: category3 */
:root{
  --bg-0:#050912;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --brand:#00D6FF;
  --brand-dim:rgba(0,214,255,.14);
  --brand-line:rgba(0,214,255,.18);
  --brand-glow:rgba(0,214,255,.35);
  --accent:#FF6A2A;
  --signal:#9BFF57;
  --glass:rgba(12,24,42,.66);
  --glass-strong:rgba(16,32,56,.78);
  --text:#EAF4FF;
  --text-2:#9BB0C9;
  --text-3:#6C819A;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 80px rgba(0,0,0,.45);
  --container:1200px;
  --header-h:76px;
}

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

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  padding-top:var(--header-h);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:
    radial-gradient(1100px 620px at 82% -8%, rgba(0,214,255,.14), transparent 62%),
    radial-gradient(900px 520px at 4% 22%, rgba(255,106,42,.10), transparent 60%),
    var(--bg-0);
  background-attachment:fixed;
  overflow-x:hidden;
}

img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .22s ease;}
a:hover{color:#7DE9FF;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.22;color:var(--text);}
h1{font-size:clamp(2.4rem,5vw,3.6rem);}
h2{font-size:clamp(1.7rem,3vw,2.4rem);}
h3{font-size:1.35rem;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0;position:relative;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8rem;font-weight:700;letter-spacing:.16em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:1.02rem;margin:14px 0 0;}
.muted{color:var(--text-2);}
.small{font-size:.86rem;color:var(--text-3);}

/* 玻璃卡 */
.glass{
  background:var(--glass);
  border:1px solid var(--brand-line);
  border-radius:var(--radius);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent) 70%,transparent);
  opacity:.85;
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;
  font-size:.95rem;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn i{font-size:.9em;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#28A8FF);
  color:#03121C;
  box-shadow:0 12px 34px rgba(0,214,255,.32),0 0 0 1px rgba(0,214,255,.3) inset;
}
.btn-primary:hover{
  transform:translateY(-2px);
  color:#03121C;
  box-shadow:0 18px 46px rgba(0,214,255,.45);
  filter:brightness(1.06);
}
.btn-primary:active{transform:translateY(1px);}
.btn-accent{
  background:linear-gradient(135deg,var(--accent),#FF9A3C);
  color:#1B0900;
  box-shadow:0 12px 34px rgba(255,106,42,.3);
}
.btn-accent:hover{transform:translateY(-2px);color:#1B0900;box-shadow:0 18px 46px rgba(255,106,42,.42);}
.btn-ghost{
  background:rgba(12,24,42,.6);
  border-color:var(--brand-line);
  color:var(--text);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{
  border-color:var(--brand);
  color:var(--brand);
  transform:translateY(-2px);
}
.btn-sm{padding:10px 18px;font-size:.86rem;}
.btn-block{width:100%;}

/* 标签 / 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  font-size:.76rem;font-weight:700;letter-spacing:.04em;
  background:var(--brand-dim);color:var(--brand);
  border:1px solid var(--brand-line);
}
.badge-warm{background:rgba(255,106,42,.14);color:#FFB185;border-color:rgba(255,106,42,.32);}
.badge-live{background:rgba(155,255,87,.12);color:var(--signal);border-color:rgba(155,255,87,.3);}
.badge-live .dot{width:7px;height:7px;border-radius:50%;background:var(--signal);box-shadow:0 0 10px var(--signal);display:inline-block;}

/* 头部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--header-h);
  background:rgba(5,9,18,.72);
  border-bottom:1px solid rgba(0,214,255,.12);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(5,9,18,.94);
  box-shadow:0 14px 44px rgba(0,0,0,.55);
}
.nav-wrap{
  max-width:var(--container);margin:0 auto;height:100%;
  padding:0 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(0,214,255,.22),rgba(255,106,42,.18));
  border:1px solid var(--brand-line);
  color:var(--brand);font-size:1.05rem;
  box-shadow:0 0 22px rgba(0,214,255,.22);
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-weight:800;font-size:1.06rem;letter-spacing:-.01em;}
.brand-sub{font-size:.6rem;letter-spacing:.24em;color:var(--text-3);font-weight:600;}

.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-link{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 15px;border-radius:999px;
  color:var(--text-2);font-size:.92rem;font-weight:600;
  transition:background .22s ease,color .22s ease;
}
.nav-link i{font-size:.82em;opacity:.8;}
.nav-link:hover{color:var(--text);background:rgba(0,214,255,.10);}
.nav-link.active{
  color:var(--brand);
  background:rgba(0,214,255,.12);
  box-shadow:inset 0 0 0 1px var(--brand-line);
}
.nav-actions{display:flex;align-items:center;gap:10px;}

.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(0,214,255,.10);border:1px solid var(--brand-line);
  color:var(--brand);font-size:1.1rem;cursor:pointer;
  align-items:center;justify-content:center;
}

/* 首屏 */
.page-hero{
  position:relative;
  padding:84px 0 72px;
  overflow:hidden;
  background:
    linear-gradient(105deg,rgba(5,9,18,.94) 26%,rgba(5,9,18,.62) 62%,rgba(5,9,18,.88) 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  border-bottom:1px solid rgba(0,214,255,.12);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(0,214,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(0,214,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,#000,transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 88%);
}
.hero-inner{position:relative;z-index:2;}
.hero-breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:.84rem;color:var(--text-3);margin-bottom:22px;
}
.hero-breadcrumb a{color:var(--text-3);}
.hero-breadcrumb a:hover{color:var(--brand);}
.hero-breadcrumb span.sep{opacity:.5;}

.hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:56px;align-items:center;}
.page-hero h1{margin:16px 0 18px;}
.page-hero h1 .hl{
  color:var(--brand);
  text-shadow:0 0 30px rgba(0,214,255,.35);
}
.hero-sub{font-size:1.06rem;color:var(--text-2);max-width:620px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  max-width:660px;
}
.stat{
  padding:16px 16px 14px;border-radius:var(--radius-sm);
  background:rgba(12,24,42,.6);border:1px solid var(--brand-line);
}
.stat b{
  display:block;font-size:1.5rem;font-weight:800;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat span{font-size:.78rem;color:var(--text-3);letter-spacing:.04em;}

.score-card{
  padding:28px;border-radius:20px;
  background:var(--glass-strong);
  border:1px solid var(--brand-line);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  position:relative;overflow:hidden;
}
.score-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent) 70%,transparent);
}
.score-top{display:flex;align-items:flex-end;gap:14px;margin-bottom:6px;}
.score-top .num{
  font-size:3.2rem;font-weight:800;line-height:1;color:var(--text);
  font-variant-numeric:tabular-nums;
}
.stars{color:var(--accent);font-size:.95rem;letter-spacing:2px;margin-bottom:8px;}
.score-card h3{font-size:1.1rem;margin-bottom:10px;}
.score-card p{font-size:.9rem;color:var(--text-2);margin-bottom:18px;}
.score-bars{display:grid;gap:10px;margin-bottom:18px;}
.score-bar{display:flex;align-items:center;gap:10px;font-size:.82rem;color:var(--text-2);}
.score-bar .track{flex:1;height:6px;border-radius:99px;background:rgba(255,255,255,.07);overflow:hidden;}
.score-bar .track i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand),#28A8FF);}
.score-bar .track i.warm{background:linear-gradient(90deg,var(--accent),#FF9A3C);}
.score-bar b{color:var(--text);font-variant-numeric:tabular-nums;min-width:34px;text-align:right;}

/* 评价墙 */
.masonry{
  columns:2;
  column-gap:26px;
}
.review{
  break-inside:avoid;
  margin-bottom:26px;
  padding:26px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--brand-line);
  backdrop-filter:blur(18px);
  box-shadow:0 18px 48px rgba(0,0,0,.35);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.review:hover{
  transform:translateY(-4px);
  border-color:rgba(0,214,255,.42);
  box-shadow:0 30px 70px rgba(0,0,0,.5),0 0 0 1px rgba(0,214,255,.2);
}
.review-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.avatar{
  width:50px;height:50px;border-radius:14px;object-fit:cover;
  border:1px solid var(--brand-line);flex-shrink:0;
}
.review-head .who{flex:1;min-width:0;}
.review-head .who strong{display:block;font-size:.98rem;font-weight:700;}
.review-head .who span{font-size:.78rem;color:var(--text-3);}
.review .rate{color:var(--accent);font-size:.85rem;letter-spacing:1.5px;white-space:nowrap;}
.review p{font-size:.95rem;color:var(--text-2);margin:0 0 16px;}
.review-tags{display:flex;flex-wrap:wrap;gap:8px;}

/* 案例卡片 */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.case-card{
  display:flex;gap:20px;
  padding:24px;border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--brand-line);
  backdrop-filter:blur(16px);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.case-card:hover{
  transform:translateY(-4px);
  border-color:rgba(0,214,255,.42);
  box-shadow:0 28px 64px rgba(0,0,0,.45);
}
.case-card .thumb{
  width:132px;height:132px;border-radius:14px;overflow:hidden;flex-shrink:0;
  border:1px solid var(--brand-line);
}
.case-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.case-card:hover .thumb img{transform:scale(1.06);}
.case-card h3{font-size:1.12rem;margin:10px 0 8px;}
.case-card p{font-size:.92rem;color:var(--text-2);margin:0 0 12px;}
.case-meta{display:flex;flex-wrap:wrap;gap:14px;font-size:.8rem;color:var(--text-3);}
.case-meta i{color:var(--brand);margin-right:5px;}

/* 联系表单 */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:34px;align-items:start;}
.contact-side{
  padding:30px;border-radius:var(--radius);
  background:var(--glass-strong);
  border:1px solid var(--brand-line);
  backdrop-filter:blur(18px);
  position:relative;overflow:hidden;
}
.contact-side::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--accent),var(--brand) 70%,transparent);
}
.contact-side img{border-radius:14px;margin-bottom:22px;border:1px solid var(--brand-line);}
.contact-side h3{font-size:1.2rem;margin-bottom:12px;}
.contact-side p{font-size:.93rem;color:var(--text-2);}
.contact-list{display:grid;gap:14px;margin-top:22px;}
.contact-list li{display:flex;align-items:center;gap:12px;font-size:.9rem;color:var(--text-2);}
.contact-list i{
  width:34px;height:34px;border-radius:10px;display:inline-flex;
  align-items:center;justify-content:center;flex-shrink:0;
  background:rgba(0,214,255,.12);color:var(--brand);border:1px solid var(--brand-line);
}

.form-card{
  padding:32px;border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--brand-line);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
}
.form-card h3{font-size:1.25rem;margin-bottom:8px;}
.form-card > p{font-size:.9rem;color:var(--text-3);margin-bottom:24px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{
  display:block;font-size:.86rem;font-weight:700;color:var(--text-2);margin-bottom:8px;
}
.field label .req{color:var(--accent);}
.field input,
.field select,
.field textarea{
  width:100%;
  padding:13px 16px;
  border-radius:var(--radius-sm);
  background:rgba(6,14,26,.85);
  border:1px solid var(--brand-line);
  color:var(--text);
  font-size:.95rem;
  font-family:inherit;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.field input::placeholder,
.field textarea::placeholder{color:#5B6E86;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(0,214,255,.18);
  background:rgba(8,18,34,.95);
}
.field textarea{min-height:140px;resize:vertical;line-height:1.75;}
.form-note{font-size:.8rem;color:var(--text-3);margin:14px 0 0;}
.form-msg{
  display:none;margin-top:18px;padding:14px 18px;border-radius:var(--radius-sm);
  font-size:.9rem;border:1px solid transparent;
}
.form-msg.ok{display:block;background:rgba(155,255,87,.1);border-color:rgba(155,255,87,.35);color:var(--signal);}
.form-msg.err{display:block;background:rgba(255,106,42,.1);border-color:rgba(255,106,42,.4);color:#FFB185;}

/* 下载 CTA */
.cta-band{
  position:relative;
  padding:80px 0;
  border-top:1px solid rgba(0,214,255,.14);
  border-bottom:1px solid rgba(0,214,255,.14);
  background:
    linear-gradient(115deg,rgba(5,9,18,.94) 30%,rgba(5,9,18,.72) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(0,214,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(0,214,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 30% 40%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000,transparent 78%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:44px;align-items:center;}
.cta-inner h2{margin-bottom:16px;}
.cta-inner p{color:var(--text-2);margin-bottom:26px;max-width:560px;}
.dl-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;max-width:460px;}
.dl-buttons .btn{width:100%;}
.dl-buttons .full{grid-column:1 / -1;}

.spec-card{
  padding:26px;border-radius:var(--radius);
  background:var(--glass-strong);
  border:1px solid var(--brand-line);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
}
.spec-card h3{font-size:1.05rem;margin-bottom:16px;display:flex;align-items:center;gap:9px;}
.spec-card h3 i{color:var(--brand);}
.spec-list{display:grid;gap:0;}
.spec-list div{
  display:flex;justify-content:space-between;gap:16px;
  padding:11px 0;
  border-bottom:1px dashed rgba(0,214,255,.14);
  font-size:.88rem;
}
.spec-list div:last-child{border-bottom:none;}
.spec-list dt{color:var(--text-3);}
.spec-list dd{margin:0;color:var(--text);font-variant-numeric:tabular-nums;text-align:right;}

/* FAQ */
.accordion{
  margin:0;background:transparent;border:none;
}
.accordion .accordion-item{
  background:var(--glass);
  border:1px solid var(--brand-line);
  border-radius:var(--radius-sm);
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.accordion .accordion-item.is-active{
  border-color:rgba(0,214,255,.42);
  box-shadow:0 18px 44px rgba(0,0,0,.4);
}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  font-size:1.02rem;font-weight:700;color:var(--text);
  border:none;background:transparent;
  transition:color .22s ease;
}
.accordion .accordion-title:hover{color:var(--brand);background:transparent;}
.accordion .accordion-title::before{
  content:"\f067";
  font-family:"Font Awesome 6 Free";font-weight:900;
  order:2;font-size:.82rem;color:var(--brand);
  transition:transform .28s ease;margin:0;
}
.accordion .accordion-item.is-active .accordion-title::before{
  transform:rotate(45deg);
}
.accordion .accordion-content{
  padding:0 24px 22px;
  border:none;background:transparent;
  font-size:.95rem;color:var(--text-2);line-height:1.85;
}

/* 页脚 */
.site-footer{
  position:relative;
  padding:76px 0 30px;
  background:linear-gradient(180deg,rgba(10,18,32,.6),rgba(5,9,18,.96));
  border-top:1px solid rgba(0,214,255,.16);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand) 32%,var(--accent) 72%,transparent);
  opacity:.75;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-col p{font-size:.9rem;color:var(--text-2);max-width:340px;}
.footer-col h4{
  font-size:.98rem;margin-bottom:18px;color:var(--text);
  font-weight:700;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{color:var(--text-2);font-size:.9rem;}
.footer-col ul a:hover{color:var(--brand);}
.footer-contact{display:flex;align-items:flex-start;gap:11px;font-size:.9rem;color:var(--text-2);margin-bottom:12px;}
.footer-contact i{color:var(--brand);margin-top:5px;}
.footer-bottom{
  margin-top:52px;padding-top:24px;
  border-top:1px solid rgba(0,214,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:.84rem;color:var(--text-3);
}

/* 平板 */
@media (max-width:1024px){
  .nav-menu{
    position:fixed;
    top:var(--header-h);left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:26px 22px 40px;
    background:rgba(5,9,18,.98);
    backdrop-filter:blur(20px);
    border-top:1px solid rgba(0,214,255,.14);
    transform:translateY(-12px);
    opacity:0;visibility:hidden;
    transition:opacity .26s ease,transform .26s ease,visibility .26s;
    overflow-y:auto;
  }
  .nav-menu.open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-link{
    padding:15px 18px;border-radius:14px;font-size:1rem;
    background:rgba(12,24,42,.55);
    border:1px solid rgba(0,214,255,.12);
  }
  .nav-menu .nav-link + .nav-link{margin-top:8px;}
  .burger{display:inline-flex;}
  .nav-actions .btn-ghost{display:none;}

  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .cta-inner{grid-template-columns:1fr;gap:34px;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .case-grid{grid-template-columns:1fr;}
}

/* 手机 */
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:58px 0;}
  .section-tight{padding:46px 0;}
  .section-head{margin-bottom:34px;}

  .site-header{height:68px;}
  :root{--header-h:68px;}
  .nav-wrap{padding:0 18px;}
  .brand-name{font-size:.98rem;}
  .brand-sub{letter-spacing:.18em;font-size:.55rem;}
  .nav-actions .btn-primary{padding:9px 15px;font-size:.82rem;}

  .page-hero{padding:52px 0 48px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .hero-cta{gap:12px;}
  .hero-cta .btn{flex:1 1 100%;}

  .masonry{columns:1;}
  .review{padding:22px;}
  .case-card{flex-direction:column;}
  .case-card .thumb{width:100%;height:170px;}

  .form-row{grid-template-columns:1fr;}
  .form-card{padding:24px;}

  .dl-buttons{grid-template-columns:1fr;max-width:100%;}
  .cta-band{padding:56px 0;}

  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;}

  .accordion .accordion-title{padding:17px 18px;font-size:.96rem;}
  .accordion .accordion-content{padding:0 18px 20px;}
}

@media (max-width:480px){
  body{font-size:15.5px;}
  h1{font-size:2rem;}
  h2{font-size:1.5rem;}
  .score-top .num{font-size:2.5rem;}
  .brand-sub{display:none;}
  .review-head .who strong{font-size:.92rem;}
  .btn{padding:12px 20px;}
}