/* roulang page: index */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1420;
  --bg-2:#121B29;
  --glow-cyan:#22D3EE;
  --cta-1:#FF8A3D;
  --cta-2:#FF6A2B;
  --cta-3:#FFA45C;
  --tx-1:#E9F1FA;
  --tx-2:#A9B8C9;
  --tx-3:#6E8091;
  --line:rgba(120,190,255,.14);
  --line-soft:rgba(255,255,255,.06);
  --ok:#2FD3A5;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-hero:20px;
  --r-pill:999px;
  --shadow-card:0 18px 40px rgba(0,0,0,.35);
  --shadow-cyan:0 0 0 1px rgba(34,211,238,.35),0 0 32px rgba(34,211,238,.16);
  --shadow-cta:0 12px 32px rgba(255,106,43,.32);
  --container:1240px;
  --pad-x:24px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-num:"Inter","Barlow",-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .22s ease-out,transform .22s ease-out}
img{max-width:100%;display:block;border-style:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--glow-cyan);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad-x)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.section{padding:104px 0;position:relative}
.section--tight{padding:80px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25;color:var(--tx-1);font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;font-size:15px;color:var(--tx-3);max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;color:var(--glow-cyan);text-transform:uppercase;font-family:var(--font-num);margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,transparent,var(--glow-cyan))}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--tx-1);white-space:nowrap}
.link-more span{transition:transform .22s ease-out;color:var(--glow-cyan)}
.link-more:hover{color:var(--glow-cyan)}
.link-more:hover span{transform:translateX(4px)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,color .22s ease-out,border-color .22s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--cta-1),var(--cta-2));
  color:#1A0C03;box-shadow:0 8px 22px rgba(255,106,43,.22);
}
.btn-primary:hover{background:linear-gradient(135deg,var(--cta-3),var(--cta-1));transform:translateY(-2px);box-shadow:var(--shadow-cta)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  border:1px solid var(--line);color:var(--tx-1);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
}
.btn-ghost:hover{border-color:rgba(34,211,238,.5);color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.25),0 10px 26px rgba(0,0,0,.4)}
.btn[disabled],.btn.is-loading{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}
.btn.is-loading::after{content:"";width:13px;height:13px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.btn-sm{height:38px;padding:0 16px;font-size:14px}

/* ---------- badges / tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.02em;
  border:1px solid var(--line);color:var(--tx-2);background:var(--glass);
}
.badge--cyan{color:var(--glow-cyan);border-color:rgba(34,211,238,.28);background:rgba(34,211,238,.07)}
.badge--orange{color:var(--cta-3);border-color:rgba(255,138,61,.3);background:rgba(255,138,61,.08)}
.tag{display:inline-block;padding:4px 10px;border-radius:var(--r-pill);font-size:12px;color:var(--glow-cyan);background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.2)}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--glow-cyan);box-shadow:0 0 10px rgba(34,211,238,.9)}

/* ---------- glass ---------- */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
}

/* ---------- header ---------- */
.progress-bar{position:fixed;top:0;left:0;height:2px;width:0;z-index:90;background:linear-gradient(90deg,rgba(34,211,238,0),var(--glow-cyan));transition:width .1s linear}
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:68px;
  transition:background .3s ease-out,box-shadow .3s ease-out,border-color .3s ease-out,backdrop-filter .3s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,11,18,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:700;font-size:13px;color:#04161A;
  background:linear-gradient(150deg,var(--glow-cyan),#0E93A8);
  box-shadow:0 0 18px rgba(34,211,238,.35);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font-size:16px;color:var(--tx-1);letter-spacing:.01em;font-weight:700}
.logo-text span{font-size:10.5px;color:var(--tx-3);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--tx-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--glow-cyan);border-radius:2px;transition:left .24s ease-out,right .24s ease-out;
}
.nav-links a:hover{color:var(--tx-1)}
.nav-links a:hover::after,.nav-links a.is-active::after{left:0;right:0}
.nav-links a.is-active{color:var(--tx-1)}
.nav-right{display:flex;align-items:center;gap:16px;flex-shrink:0}
.search-box{display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--glass);width:38px;overflow:hidden;transition:width .28s ease-out,border-color .24s ease-out}
.search-box.is-open{width:260px;border-color:rgba(34,211,238,.35)}
.search-box input{flex:1;min-width:0;background:none;border:0;outline:none;font-size:14px;color:var(--tx-1);opacity:0;transition:opacity .2s ease-out}
.search-box.is-open input{opacity:1}
.icon-btn{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--glass);color:var(--tx-2);flex-shrink:0;transition:color .2s,border-color .2s,transform .2s}
.icon-btn:hover{color:var(--glow-cyan);border-color:rgba(34,211,238,.4)}
.nav-contact{font-size:14px;color:var(--tx-3);display:flex;flex-direction:column;line-height:1.2}
.nav-contact b{font-family:var(--font-num);font-size:15px;color:var(--tx-1);font-weight:600}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--glass);align-items:center;justify-content:center;color:var(--tx-1)}
.nav-toggle span{display:block;width:18px;height:1.5px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:currentColor}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(88vw,360px);z-index:95;
  background:rgba(9,14,22,.96);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .32s ease-out;
  display:flex;flex-direction:column;padding:24px 22px 32px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.drawer nav{display:flex;flex-direction:column;gap:6px}
.drawer nav a{font-size:19px;font-weight:600;color:var(--tx-1);padding:14px 0;border-bottom:1px solid var(--line-soft)}
.drawer nav a.is-active{color:var(--glow-cyan)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px}
.drawer-foot .btn{width:100%}
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,11,.6);z-index:94;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.drawer-mask.is-open{opacity:1;visibility:visible}
body.is-locked{overflow:hidden}

/* ---------- hero ---------- */
.hero{
  position:relative;padding-top:calc(68px + 24px);padding-bottom:96px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;top:-160px;left:-120px;width:620px;height:620px;pointer-events:none;
  background:radial-gradient(circle,rgba(34,211,238,.16),transparent 62%);
}
.hero::after{
  content:"";position:absolute;bottom:-220px;right:-140px;width:560px;height:560px;pointer-events:none;
  background:radial-gradient(circle,rgba(255,106,43,.12),transparent 64%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;padding-top:56px}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);line-height:1.16;font-weight:700;letter-spacing:-.01em;color:var(--tx-1);
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--cta-3)}
.hero-sub{font-size:17px;color:var(--tx-2);max-width:520px;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:560px}
.hero-stat{padding-left:16px;border-left:1px solid var(--line)}
.hero-stat b{display:block;font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--tx-1);line-height:1.2}
.hero-stat b i{font-style:normal;font-size:15px;color:var(--glow-cyan);margin-left:2px}
.hero-stat span{font-size:13px;color:var(--tx-3)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/12;object-fit:cover;border-radius:var(--r-hero);
  border:1px solid var(--line);box-shadow:0 30px 70px rgba(0,0,0,.55);
}
.float-card{
  position:absolute;padding:14px 16px;border-radius:var(--r-card);
  background:rgba(10,17,26,.72);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(34,211,238,.34);box-shadow:var(--shadow-cyan);
}
.float-card .fc-label{font-size:11.5px;color:var(--tx-3);letter-spacing:.04em}
.float-card .fc-value{font-family:var(--font-num);font-size:17px;color:var(--tx-1);font-weight:600}
.float-card--spec{top:22px;right:-18px;min-width:168px}
.float-card--rate{bottom:26px;left:-22px;min-width:196px}
.fc-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:6px}
.fc-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:8px}
.fc-bar i{display:block;height:100%;width:96%;border-radius:999px;background:linear-gradient(90deg,var(--cta-2),var(--cta-3))}

/* ---------- trust strip ---------- */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-item{padding:30px 24px;display:flex;gap:14px;align-items:flex-start;border-left:1px solid var(--line-soft)}
.trust-item:first-child{border-left:0}
.trust-icon{width:38px;height:38px;border-radius:10px;flex-shrink:0;display:flex;align-items:center;justify-content:center;border:1px solid rgba(34,211,238,.3);color:var(--glow-cyan);background:rgba(34,211,238,.06)}
.trust-item h3{font-size:15px;color:var(--tx-1);font-weight:600;margin-bottom:4px}
.trust-item p{font-size:13px;color:var(--tx-3);line-height:1.7}

/* ---------- filter pills ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.filter-pill{
  padding:9px 18px;border-radius:var(--r-pill);font-size:14px;color:var(--tx-2);
  border:1px solid var(--line);background:var(--glass);transition:all .22s ease-out;
}
.filter-pill:hover{color:var(--tx-1);border-color:rgba(34,211,238,.4)}
.filter-pill.is-active{color:#04161A;background:linear-gradient(135deg,var(--glow-cyan),#12A5BC);border-color:transparent;font-weight:600}

/* ---------- product grid ---------- */
.product-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.product-card{
  display:flex;flex-direction:column;overflow:hidden;position:relative;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.product-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.45);box-shadow:var(--shadow-card),var(--shadow-cyan)}
.product-media{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.product-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s ease-out}
.product-card:hover .product-media img{transform:scale(1.04)}
.product-media .badge{position:absolute;top:12px;left:12px;background:rgba(9,15,23,.72);backdrop-filter:blur(8px)}
.product-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1;gap:10px}
.product-body h3{font-size:16.5px;line-height:1.45;color:var(--tx-1);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-desc{font-size:13.5px;color:var(--tx-3);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-spec{font-size:12.5px;color:var(--tx-2);font-family:var(--font-num);
  padding:9px 11px;border-radius:8px;background:rgba(255,255,255,.035);border:1px solid var(--line-soft)}
.product-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px}
.price{font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--cta-3)}
.price small{font-size:12px;color:var(--tx-3);font-weight:400;margin-left:3px}

/* ---------- reviews ---------- */
.review-shell{position:relative}
.review-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:none;
}
.review-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 calc((100% - 40px)/3);scroll-snap-align:start;
  padding:24px;display:flex;flex-direction:column;gap:14px;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);
}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{width:42px;height:42px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:700;color:#04161A;background:linear-gradient(150deg,var(--glow-cyan),#0E93A8)}
.review-name{font-size:15px;color:var(--tx-1);font-weight:600;line-height:1.3}
.review-meta{font-size:12.5px;color:var(--tx-3)}
.stars{color:var(--cta-1);font-size:14px;letter-spacing:2px}
.review-text{font-size:14.5px;color:var(--tx-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.review-origin{font-size:12px;color:var(--tx-3);margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft)}
.review-nav{display:flex;align-items:center;gap:12px}
.review-dots{display:flex;gap:7px;margin-left:6px}
.review-dots i{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.16);transition:all .24s}
.review-dots i.is-active{background:var(--glow-cyan);width:20px;border-radius:999px;box-shadow:0 0 10px rgba(34,211,238,.7)}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;gap:12px;padding:24px;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.45);box-shadow:var(--shadow-card),var(--shadow-cyan)}
.news-card h3{font-size:16.5px;line-height:1.5;color:var(--tx-1);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card p{font-size:13.5px;color:var(--tx-3);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);font-size:12.5px;color:var(--tx-3)}
.news-foot span.arrow{color:var(--glow-cyan);transition:transform .22s ease-out}
.news-card:hover .news-foot span.arrow{transform:translateX(4px)}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:64px 24px;text-align:center;border:1px dashed var(--line);border-radius:var(--r-card);background:rgba(255,255,255,.02);
}
.empty-state svg{color:var(--glow-cyan);opacity:.75}
.empty-state p{font-size:15px;color:var(--tx-2)}
.empty-state small{font-size:13px;color:var(--tx-3)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-card);padding:44px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(18,27,41,.92),rgba(12,20,32,.92));
  border:1px solid var(--line);
  box-shadow:0 0 0 1px rgba(34,211,238,.16),0 0 44px rgba(34,211,238,.1),var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;top:-120px;right:-60px;width:360px;height:360px;
  background:radial-gradient(circle,rgba(255,106,43,.16),transparent 62%);pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);color:var(--tx-1);font-weight:700;line-height:1.3;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--tx-2);max-width:560px}
.cta-actions{position:relative;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.cta-phone{display:flex;flex-direction:column;line-height:1.3;font-size:12.5px;color:var(--tx-3)}
.cta-phone b{font-family:var(--font-num);font-size:17px;color:var(--tx-1);font-weight:600}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .24s ease-out,box-shadow .24s ease-out;
}
.faq-item.is-open{border-color:rgba(34,211,238,.4);box-shadow:0 0 0 1px rgba(34,211,238,.22),0 0 26px rgba(34,211,238,.1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--tx-1);
}
.faq-q .mark{position:relative;width:18px;height:18px;flex-shrink:0;color:var(--glow-cyan)}
.faq-q .mark::before,.faq-q .mark::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .24s ease-out,opacity .24s ease-out}
.faq-q .mark::before{top:8px;left:0;width:18px;height:2px}
.faq-q .mark::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-q .mark::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease-out}
.faq-a-inner{padding:0 22px 22px 25px;font-size:15px;line-height:1.8;color:var(--tx-2);border-left:3px solid rgba(34,211,238,.55);margin-left:22px}
.faq-item.is-open .faq-a{max-height:340px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(12,20,32,.6),rgba(7,11,18,1));margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding:72px 0 48px}
.footer-brand{display:flex;flex-direction:column;gap:16px;max-width:340px}
.footer-brand p{font-size:14px;color:var(--tx-3);line-height:1.8}
.footer-col h4{font-size:14px;color:var(--glow-cyan);font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.footer-col a,.footer-col li{display:block;font-size:14px;color:var(--tx-2);line-height:2.1}
.footer-col a:hover{color:var(--glow-cyan);transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 0 34px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--tx-3);
}
.socials{display:flex;gap:10px}
.socials a{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);color:var(--tx-3)}
.socials a:hover{color:var(--glow-cyan);border-color:rgba(34,211,238,.4)}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:12px;z-index:70;
  display:flex;align-items:center;justify-content:center;
  background:rgba(12,20,32,.85);backdrop-filter:blur(12px);
  border:1px solid var(--line);color:var(--tx-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .26s,visibility .26s,transform .26s,color .2s,border-color .2s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--glow-cyan);border-color:rgba(34,211,238,.45)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .product-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .review-card{flex:0 0 calc((100% - 40px)/3)}
  .float-card--spec{right:0}
  .float-card--rate{left:0}
}
@media (max-width:1023px){
  .section{padding:76px 0}
  .nav-links,.nav-contact{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:44px;padding-top:36px}
  .hero-visual{order:2}
  .hero h1{font-size:clamp(30px,6vw,44px)}
  .trust{grid-template-columns:repeat(2,1fr)}
  .trust-item{border-left:0;border-top:1px solid var(--line-soft)}
  .trust-item:nth-child(-n+2){border-top:0}
  .product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .review-card{flex:0 0 calc((100% - 20px)/2)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px}
  .cta-band{padding:34px 28px}
}
@media (max-width:767px){
  :root{--pad-x:20px}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .hero{padding-bottom:64px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:16px}
  .hero-cta .btn{flex:1 1 auto}
  .search-box{display:none}
  .review-card{flex:0 0 86%}
  .product-grid,.news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand{max-width:none}
  .cta-band{padding:28px 20px;gap:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .to-top{right:14px;bottom:16px}
}
@media (max-width:560px){
  .float-card{display:none}
  .hero-stats{grid-template-columns:1fr}
  .hero-stat{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:12px}
  .hero-stat:first-child{border-top:0;padding-top:0}
  .trust{grid-template-columns:1fr}
  .trust-item{border-top:1px solid var(--line-soft)}
  .trust-item:first-child{border-top:0}
  .btn{width:100%}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .logo-text span{display:none}
}

/* roulang page: article */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1420;
  --bg-2:#121B29;
  --glow-cyan:#22D3EE;
  --cta-1:#FF8A3D;
  --cta-2:#FF6A2B;
  --cta-3:#FFA45C;
  --tx-1:#E9F1FA;
  --tx-2:#A9B8C9;
  --tx-3:#6E8091;
  --line:rgba(120,190,255,.14);
  --line-soft:rgba(255,255,255,.06);
  --ok:#2FD3A5;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-hero:20px;
  --r-pill:999px;
  --shadow-card:0 18px 40px rgba(0,0,0,.35);
  --shadow-cyan:0 0 0 1px rgba(34,211,238,.35),0 0 32px rgba(34,211,238,.16);
  --shadow-cta:0 12px 32px rgba(255,106,43,.32);
  --container:1240px;
  --sp:8px;
  --head-h:68px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","Barlow","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:var(--head-h);
  background:var(--bg-0);
  color:var(--tx-2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  text-align:left;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.nav-locked{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--tx-1);text-decoration:none;transition:color .22s ease-out,transform .22s ease-out}
a:hover{color:#9BEBFA}
button{font-family:inherit}
input,textarea,select{font-family:inherit;font-size:15px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--tx-1);font-weight:700;letter-spacing:-.01em}
p{margin:0}
::selection{background:rgba(34,211,238,.28);color:#fff}
:focus-visible{outline:2px solid var(--glow-cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- 进度条 ---------- */
.progress-bar{
  position:fixed;top:calc(var(--head-h) - 1px);left:0;height:2px;width:0;
  background:linear-gradient(90deg,rgba(34,211,238,0),var(--glow-cyan));z-index:61;
  transition:width .12s linear;
  box-shadow:0 0 12px rgba(34,211,238,.5);
}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;height:var(--head-h);z-index:60;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .28s ease-out,border-color .28s ease-out,box-shadow .28s ease-out;
}
.site-header.is-stuck{
  background:rgba(7,11,18,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  box-shadow:0 12px 34px rgba(0,0,0,.44);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  font-weight:800;font-size:16px;letter-spacing:.02em;
  color:#9BF3FF;
  background:linear-gradient(150deg,#0F2A3D,#101B29);
  border:1px solid rgba(34,211,238,.42);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 0 18px rgba(34,211,238,.16);
  font-family:var(--font-num);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{color:var(--tx-1);font-size:16px;font-weight:700;letter-spacing:.01em}
.logo-text span{font-size:11px;color:var(--tx-3);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--tx-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
  background:var(--glow-cyan);transition:left .24s ease-out,right .24s ease-out;
}
.nav-links a:hover{color:var(--tx-1)}
.nav-links a:hover::after,.nav-links a.is-active::after{left:0;right:0}
.nav-links a.is-active{color:#BFF6FF}
.nav-right{display:flex;align-items:center;gap:16px;flex:none}
.search-box{
  display:flex;align-items:center;gap:2px;
  height:38px;padding:0 4px;border-radius:var(--r-pill);
  border:1px solid transparent;transition:border-color .24s ease-out,background .24s ease-out;
}
.search-box.is-open{border-color:var(--line);background:var(--glass);backdrop-filter:blur(14px) saturate(140%)}
.search-box input{
  width:0;opacity:0;border:0;background:transparent;color:var(--tx-1);
  transition:width .28s ease-out,opacity .2s ease-out;outline:none;
}
.search-box.is-open input{width:212px;opacity:1}
.search-box input::placeholder{color:var(--tx-3)}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;cursor:pointer;
  color:var(--tx-2);border-radius:var(--r-pill);transition:color .2s,background .2s;
}
.icon-btn:hover{color:#9BF3FF;background:var(--glass)}
.nav-contact{display:flex;flex-direction:column;line-height:1.2;text-align:right}
.nav-contact span{font-size:11px;color:var(--tx-3);letter-spacing:.04em}
.nav-contact b{font-size:14px;color:var(--tx-1);font-family:var(--font-num)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,border-color .22s ease-out,color .22s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,var(--cta-1),var(--cta-2));
  color:#1D0E04;
  box-shadow:0 10px 26px rgba(255,106,43,.26);
}
.btn-primary:hover{
  background:linear-gradient(135deg,var(--cta-3),var(--cta-1));
  color:#1D0E04;transform:translateY(-2px);box-shadow:var(--shadow-cta);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(255,106,43,.24)}
.btn-ghost{
  background:var(--glass);border-color:var(--line);color:var(--tx-1);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(34,211,238,.5);color:#C8F7FF;transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--glass);cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:1.6px;border-radius:2px;background:var(--tx-1);
  transform:translateX(-50%);transition:transform .24s ease-out,opacity .2s ease-out;
}
.nav-toggle span{top:50%;margin-top:-.8px}
.nav-toggle span::before{content:"";top:-6px}
.nav-toggle span::after{content:"";top:6px}
.nav-open .nav-toggle span{transform:translateX(-50%) rotate(45deg)}
.nav-open .nav-toggle span::before{transform:rotate(-90deg);top:0}
.nav-open .nav-toggle span::after{opacity:0}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0}
.crumbs{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);
  overflow-x:auto;white-space:nowrap;scrollbar-width:none;
}
.crumbs::-webkit-scrollbar{display:none}
.crumbs a{color:var(--tx-3)}
.crumbs a:hover{color:var(--glow-cyan)}
.crumbs span.sep{color:rgba(110,128,145,.6)}
.crumbs b{color:var(--tx-1);font-weight:600;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;overflow:hidden;margin-top:20px;
  border:1px solid var(--line);border-radius:var(--r-hero);
  background:
    radial-gradient(900px 320px at 8% 0%,rgba(34,211,238,.16),transparent 62%),
    radial-gradient(600px 300px at 96% 100%,rgba(255,106,43,.14),transparent 60%),
    linear-gradient(150deg,#0B1522,#0A101A);
  padding:44px 40px 40px;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;mix-blend-mode:screen;
}
.article-hero-inner{position:relative;z-index:2;max-width:800px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.02em;font-weight:600;
  border:1px solid var(--line);background:var(--glass);color:#A8EEFB;
}
.badge--orange{border-color:rgba(255,138,61,.34);background:rgba(255,138,61,.1);color:var(--cta-3)}
.badge--cyan{border-color:rgba(34,211,238,.34);background:rgba(34,211,238,.1);color:#9BF3FF}
.article-hero h1{
  margin:18px 0 0;font-size:clamp(28px,3.6vw,46px);line-height:1.2;font-weight:700;
}
.article-hero .lede{margin-top:16px;font-size:16px;line-height:1.85;color:var(--tx-2);max-width:720px}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:26px;
  font-size:13px;color:var(--tx-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(110,128,145,.6)}
.article-meta b{color:var(--tx-1);font-weight:600}
.share-group{display:flex;align-items:center;gap:8px;margin-left:auto}
.share-group a{
  width:34px;height:34px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--line);background:var(--glass);color:var(--tx-2);
}
.share-group a:hover{color:#9BF3FF;border-color:rgba(34,211,238,.5);transform:translateY(-2px)}

/* ---------- 布局 ---------- */
main{display:block}
.section{padding:64px 0}
.section--tight{padding:44px 0}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 336px;
  gap:48px;align-items:start;
}
.layout-main{min-width:0}
.panel{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  padding:32px;
}
.reading{max-width:760px}

/* ---------- 正文排版 ---------- */
.article-body{
  color:var(--tx-2);font-size:17px;line-height:1.9;
}
.article-body>*{max-width:760px}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:16px;
  font-size:clamp(21px,2.1vw,27px);line-height:1.35;font-weight:700;color:var(--tx-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--glow-cyan),rgba(34,211,238,.12));
}
.article-body h3{margin:30px 0 12px;font-size:20px;line-height:1.5;font-weight:600;color:var(--tx-1)}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:#CBDAE9}
.article-body a{color:#9BF3FF;border-bottom:1px solid rgba(34,211,238,.35)}
.article-body a:hover{color:#fff;border-bottom-color:var(--glow-cyan)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0}
.article-body ul li,
.article-body ol li{
  position:relative;padding-left:24px;margin-bottom:10px;color:var(--tx-2);
}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--glow-cyan);box-shadow:0 0 10px rgba(34,211,238,.55);
}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li;padding-left:30px}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.1em;
  width:20px;height:20px;border-radius:6px;display:grid;place-items:center;
  font-size:12px;font-weight:700;color:#9BF3FF;font-family:var(--font-num);
  border:1px solid rgba(34,211,238,.4);background:rgba(34,211,238,.08);
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--glow-cyan);border-radius:0 var(--r-card) var(--r-card) 0;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  color:#C6D6E6;font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;height:auto;border-radius:var(--r-img);
  border:1px solid var(--line);margin:22px 0 8px;object-fit:cover;
}
.article-body figure{margin:24px 0}
.article-body figcaption,.article-body .caption{font-size:13px;color:var(--tx-3);text-align:center}
.article-body table{
  display:block;width:100%;overflow-x:auto;margin:24px 0;border-collapse:collapse;
  font-size:15px;
}
.article-body th,.article-body td{
  padding:12px 14px;border:1px solid var(--line);text-align:left;white-space:nowrap;
}
.article-body th{background:rgba(255,255,255,.05);color:var(--tx-1);font-weight:600}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.article-body strong{color:var(--tx-1)}

.empty-state{
  display:flex;flex-direction:column;align-items:flex-start;gap:16px;
  padding:48px 32px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:rgba(255,255,255,.02);
}
.empty-state svg{color:var(--glow-cyan)}
.empty-state h3{font-size:20px}
.empty-state p{color:var(--tx-3);font-size:15px}

/* ---------- 标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.02em;color:var(--tx-2);
  border:1px solid var(--line);background:var(--glass);
}
.tag:hover{color:#9BF3FF;border-color:rgba(34,211,238,.5);transform:translateY(-2px)}

/* ---------- 侧栏 ---------- */
.sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:calc(var(--head-h) + 20px)}
.side-card{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
}
.side-card h3{font-size:16px;margin-bottom:6px}
.side-card p{font-size:13.5px;color:var(--tx-3);line-height:1.8}
.side-card--cta{
  border-color:rgba(34,211,238,.3);
  background:linear-gradient(160deg,rgba(34,211,238,.1),rgba(255,106,43,.06));
  box-shadow:0 0 0 1px rgba(34,211,238,.18),0 0 34px rgba(34,211,238,.14);
}
.side-card--cta .btn{margin-top:16px}
.side-list{margin-top:14px;display:flex;flex-direction:column;gap:12px}
.side-post{display:flex;gap:12px;align-items:flex-start}
.side-post img{
  width:74px;height:52px;flex:none;border-radius:10px;object-fit:cover;border:1px solid var(--line);
}
.side-post b{display:block;font-size:14px;font-weight:600;color:var(--tx-1);line-height:1.55}
.side-post span{font-size:12px;color:var(--tx-3)}
.side-post:hover b{color:#9BF3FF}
.side-points{margin-top:12px;display:flex;flex-direction:column;gap:10px}
.side-points li{display:flex;gap:10px;font-size:13.5px;color:var(--tx-2);line-height:1.7}
.side-points li::before{
  content:"";flex:none;width:6px;height:6px;margin-top:9px;border-radius:50%;
  background:var(--glow-cyan);box-shadow:0 0 8px rgba(34,211,238,.6);
}

/* ---------- 上下篇 ---------- */
.postnav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:44px}
.postnav a{
  display:flex;flex-direction:column;gap:6px;padding:20px 22px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
}
.postnav a:hover{border-color:rgba(34,211,238,.5);box-shadow:var(--shadow-cyan);transform:translateY(-4px)}
.postnav span{font-size:12px;color:var(--tx-3);letter-spacing:.04em}
.postnav b{font-size:15.5px;color:var(--tx-1);font-weight:600}
.postnav .arrow{align-self:flex-start;color:var(--glow-cyan);font-size:13px}

/* ---------- 相关推荐 ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3}
.section-head p{margin-top:10px;color:var(--tx-3);font-size:14.5px;max-width:600px}
.more-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:#9BF3FF;
}
.more-link svg{transition:transform .22s ease-out}
.more-link:hover svg{transform:translateX(4px)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.45);box-shadow:var(--shadow-card),var(--shadow-cyan)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,18,0) 40%,rgba(7,11,18,.7));
}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5;font-weight:600}
.card-body .desc{
  font-size:14px;color:var(--tx-3);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--tx-3);padding-top:12px;border-top:1px solid var(--line-soft);
}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq details{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  padding:0 22px;transition:border-color .24s ease-out,box-shadow .24s ease-out;
}
.faq details[open]{border-color:rgba(34,211,238,.42);box-shadow:0 0 24px rgba(34,211,238,.1)}
.faq summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 40px 20px 0;font-size:16px;font-weight:600;color:var(--tx-1);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--glow-cyan);transition:transform .24s ease-out;
}
.faq details[open] summary::after{content:"−"}
.faq details[open] summary::before{
  content:"";position:absolute;left:-22px;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--glow-cyan),rgba(34,211,238,.1));
}
.faq .answer{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--tx-2);max-width:780px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-hero);
  border:1px solid rgba(34,211,238,.26);
  background:
    radial-gradient(700px 260px at 6% 0%,rgba(34,211,238,.16),transparent 60%),
    linear-gradient(150deg,#0C1725,#0A1017);
  box-shadow:0 0 0 1px rgba(34,211,238,.12),0 0 40px rgba(34,211,238,.12);
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);line-height:1.35}
.cta-band p{margin-top:12px;color:var(--tx-2);font-size:15px;max-width:640px}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.cta-note{font-size:13px;color:var(--tx-3);margin-top:12px}
.cta-note b{color:var(--cta-3);font-family:var(--font-num);font-size:15px}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;cursor:pointer;z-index:55;
  border:1px solid var(--line);background:rgba(12,20,32,.85);color:#9BF3FF;
  backdrop-filter:blur(14px);opacity:0;pointer-events:none;
  transition:opacity .24s ease-out,transform .24s ease-out,border-color .24s ease-out;
}
.back-top.is-on{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.55)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:44px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg-1),var(--bg-0));
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--tx-3);line-height:1.85;max-width:420px}
.footer-brand .badge{margin-top:16px}
.footer-col h4{font-size:14px;color:#9BF3FF;letter-spacing:.04em;margin-bottom:16px}
.footer-col a,.footer-col li{
  display:block;font-size:14px;color:var(--tx-2);margin-bottom:11px;line-height:1.7;
}
.footer-col a:hover{color:var(--glow-cyan);transform:translateX(2px)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--tx-3);
}
.socials{display:flex;gap:10px}
.socials a{
  width:34px;height:34px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--line);color:var(--tx-2);background:var(--glass);
}
.socials a:hover{color:#9BF3FF;border-color:rgba(34,211,238,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;top:auto}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;top:var(--head-h);left:0;right:0;bottom:0;
    flex-direction:column;align-items:flex-start;gap:4px;
    padding:28px 24px 40px;
    background:rgba(7,11,18,.96);
    backdrop-filter:blur(18px) saturate(140%);
    border-top:1px solid var(--line);
    transform:translateX(100%);opacity:0;pointer-events:none;
    transition:transform .3s ease-out,opacity .24s ease-out;
    overflow-y:auto;
  }
  .nav-open .nav-links{transform:translateX(0);opacity:1;pointer-events:auto}
  .nav-links a{font-size:20px;font-weight:600;color:var(--tx-1);padding:12px 0;width:100%}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:#9BF3FF}
  .nav-toggle{display:block}
  .nav-contact{display:none}
  .search-box.is-open input{width:150px}
  .section{padding:72px 0}
  .article-hero{padding:34px 26px 32px}
  .panel{padding:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:36px 0}
  .logo-text span{display:none}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .postnav{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:28px 22px}
  .faq details{padding:0 18px}
  .faq details[open] summary::before{left:-18px}
  .article-hero h1{font-size:clamp(24px,6.6vw,32px)}
  .share-group{margin-left:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .btn{padding:11px 18px;font-size:14.5px}
  .btn-sm{padding:9px 14px;font-size:13.5px}
  .search-box.is-open input{width:110px}
  .article-hero{padding:26px 18px 26px;border-radius:16px}
  .panel{padding:20px}
  .side-card{padding:18px}
  .article-body{font-size:16.5px}
  .back-top{right:14px;bottom:16px;width:42px;height:42px}
}

/* roulang page: category1 */
/* ================= 设计变量 ================= */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1420;
  --bg-2:#121B29;
  --glow-cyan:#22D3EE;
  --cta-1:#FF8A3D;
  --cta-2:#FF6A2B;
  --cta-3:#FFA45C;
  --tx-1:#E9F1FA;
  --tx-2:#A9B8C9;
  --tx-3:#6E8091;
  --line:rgba(120,190,255,.14);
  --line-soft:rgba(255,255,255,.06);
  --ok:#2FD3A5;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --glass:rgba(255,255,255,.045);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-hero:20px;
  --r-pill:999px;
  --sh-card:0 18px 40px rgba(0,0,0,.35);
  --sh-hover:0 0 0 1px rgba(34,211,238,.35),0 0 32px rgba(34,211,238,.16);
  --sh-cta:0 12px 32px rgba(255,106,43,.32);
  --maxw:1240px;
  --t:240ms cubic-bezier(.22,.61,.36,1);
}

/* ================= 基础 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--tx-2);
  background:
    radial-gradient(900px 520px at 10% -6%,rgba(34,211,238,.10),transparent 62%),
    radial-gradient(760px 440px at 92% 4%,rgba(255,106,43,.08),transparent 60%),
    var(--bg-0);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t),transform var(--t)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--tx-1);font-weight:700;line-height:1.25}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.16;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:clamp(19px,2vw,23px);font-weight:600}
p{margin:0 0 1.2em}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--glow-cyan);outline-offset:2px;border-radius:6px}
::selection{background:rgba(34,211,238,.3);color:#fff}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ================= 顶部进度与返回 ================= */
.progress-bar{position:fixed;top:0;left:0;height:2px;width:0;z-index:200;background:linear-gradient(90deg,rgba(34,211,238,.1),var(--glow-cyan));box-shadow:0 0 12px rgba(34,211,238,.5)}
.back-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:rgba(12,20,32,.86);border:1px solid var(--line);color:var(--tx-2);backdrop-filter:blur(12px);opacity:0;pointer-events:none;transform:translateY(10px);transition:all var(--t);z-index:120}
.back-top.is-show{opacity:1;pointer-events:auto;transform:none}
.back-top:hover{color:var(--glow-cyan);border-color:rgba(34,211,238,.5);box-shadow:0 0 22px rgba(34,211,238,.2)}

/* ================= 通用玻璃与按钮 ================= */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.08);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;transition:all var(--t);white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--cta-1),var(--cta-2));
  color:#1B0F05;
  box-shadow:0 10px 26px rgba(255,106,43,.24);
}
.btn-primary:hover{background:linear-gradient(135deg,var(--cta-3),var(--cta-1));transform:translateY(-2px);box-shadow:var(--sh-cta)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(255,106,43,.24)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line);color:var(--tx-1);backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:rgba(34,211,238,.5);color:#fff;box-shadow:0 0 22px rgba(34,211,238,.16);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.02em;border:1px solid var(--line);background:rgba(34,211,238,.08);color:#A8F0FA}
.badge--orange{background:rgba(255,138,61,.1);border-color:rgba(255,138,61,.32);color:#FFC49A}
.badge--ok{background:rgba(47,211,165,.1);border-color:rgba(47,211,165,.3);color:#8BE9CE}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--glow-cyan);text-transform:uppercase;margin-bottom:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--glow-cyan)}
.link-arrow span{transition:transform var(--t)}
.link-arrow:hover span{transform:translateX(4px)}

/* ================= 导航 ================= */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(9,14,22,.88);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px rgba(0,0,0,.34);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.nav-left,.nav-right{display:flex;align-items:center}
.nav-left{gap:30px;min-width:0}
.nav-right{gap:16px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  font-weight:800;font-size:15px;letter-spacing:.02em;color:#0A1620;
  background:linear-gradient(140deg,var(--glow-cyan),#5EEAD4 55%,var(--cta-1));
  box-shadow:0 0 18px rgba(34,211,238,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:15px;color:var(--tx-1);letter-spacing:.01em}
.logo-text span{font-size:11.5px;color:var(--tx-3);letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;font-size:14.5px;font-weight:500;color:var(--tx-2);padding:6px 0}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--glow-cyan),rgba(34,211,238,.2));
  transform:scaleX(0);transform-origin:center;transition:transform var(--t);
}
.nav-links a:hover{color:var(--tx-1)}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--tx-1);font-weight:600}
.search-box{display:flex;align-items:center;gap:8px;height:38px;padding:0 10px;border-radius:var(--r-btn);border:1px solid transparent;transition:all var(--t)}
.search-box.is-open{border-color:var(--line);background:rgba(255,255,255,.05);backdrop-filter:blur(12px)}
.search-box .icon-btn{color:var(--tx-2);display:grid;place-items:center;padding:4px;transition:color var(--t)}
.search-box .icon-btn:hover{color:var(--glow-cyan)}
.search-box input{
  width:0;opacity:0;border:0;background:transparent;color:var(--tx-1);font-size:14px;
  transition:width var(--t),opacity var(--t);outline:none;
}
.search-box.is-open input{width:220px;opacity:1}
.search-box input::placeholder{color:var(--tx-3)}
.nav-contact{display:flex;flex-direction:column;line-height:1.25;padding-left:16px;border-left:1px solid var(--line-soft)}
.nav-contact span{font-size:11.5px;color:var(--tx-3)}
.nav-contact b{font-size:14px;color:var(--tx-1);font-variant-numeric:tabular-nums}
.nav-toggle{display:none;width:42px;height:42px;border-radius:calc(var(--r-btn));border:1px solid var(--line);background:rgba(255,255,255,.04);position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--tx-1);transition:transform var(--t),opacity var(--t)}
.nav-toggle span{top:50%;left:50%;margin:-1px 0 0 -9px}
.nav-toggle span::before{content:"";top:-6px}
.nav-toggle span::after{content:"";top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ================= 分类 Hero ================= */
.page-hero{position:relative;padding:calc(68px + 56px) 0 72px;overflow:hidden;min-height:300px}
.page-hero-bg{position:absolute;inset:0;z-index:-1}
.page-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.3}
.page-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,11,18,.96) 8%,rgba(7,11,18,.78) 52%,rgba(7,11,18,.94) 100%)}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--tx-3);margin-bottom:26px;white-space:nowrap;overflow-x:auto;scrollbar-width:none}
.breadcrumb::-webkit-scrollbar{display:none}
.breadcrumb a:hover{color:var(--glow-cyan)}
.breadcrumb .sep{color:rgba(110,128,145,.6)}
.breadcrumb .current{color:var(--tx-1);font-weight:600}
.page-hero-grid{display:grid;grid-template-columns:1.45fr .95fr;gap:48px;align-items:center}
.page-hero h1{margin:16px 0 18px;max-width:16em}
.page-hero .sub{font-size:17px;color:var(--tx-2);max-width:30em;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:34px;padding-top:26px;border-top:1px solid var(--line-soft)}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.hero-stats b{font-size:22px;color:var(--tx-1);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.hero-stats span{font-size:13px;color:var(--tx-3)}
.hero-panel{padding:26px 26px 22px}
.hero-panel h2{font-size:17px;font-weight:600;margin-bottom:16px;color:var(--tx-1)}
.panel-list li{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line-soft);font-size:14px}
.panel-list li:last-child{border-bottom:0}
.panel-list span{color:var(--tx-3)}
.panel-list b{color:var(--tx-1);font-weight:600;text-align:right}
.panel-note{margin-top:16px;padding:12px 14px;border-radius:var(--r-btn);background:rgba(34,211,238,.07);border:1px solid rgba(34,211,238,.22);font-size:13px;color:#BFEAF3;line-height:1.7}

/* ================= 锚点条 ================= */
.anchor-bar{position:sticky;top:68px;z-index:60;background:rgba(7,11,18,.82);backdrop-filter:blur(14px);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.anchor-inner{display:flex;gap:30px;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{position:relative;padding:18px 0;font-size:14.5px;font-weight:500;color:var(--tx-2);white-space:nowrap}
.anchor-inner a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--glow-cyan);transform:scaleX(0);transition:transform var(--t)}
.anchor-inner a:hover{color:var(--tx-1)}
.anchor-inner a.is-current{color:var(--tx-1);font-weight:600}
.anchor-inner a.is-current::after{transform:scaleX(1)}

/* ================= 板块通用 ================= */
.section{padding:96px 0;scroll-margin-top:130px}
.section--tight{padding:80px 0}
.section--alt{background:linear-gradient(180deg,rgba(12,20,32,.86),rgba(7,11,18,0))}
.sec-head{max-width:820px;margin-bottom:48px}
.sec-head .sec-lead{font-size:16.5px;color:var(--tx-2);margin:16px 0 0}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ================= 左右两栏 + 参数侧栏 ================= */
.split{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:start}
.text-block{padding:26px 28px;border-radius:var(--r-card);border:1px solid var(--line-soft);background:rgba(255,255,255,.025);margin-bottom:20px;transition:border-color var(--t),box-shadow var(--t)}
.text-block:hover{border-color:var(--line);box-shadow:0 14px 32px rgba(0,0,0,.28)}
.text-block h3{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.text-block h3 i{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-style:normal;font-size:13px;font-weight:700;color:#08131B;background:linear-gradient(140deg,var(--glow-cyan),#67E8F9)}
.text-block p:last-child{margin-bottom:0}
.spec-side{padding:26px 24px;position:sticky;top:150px}
.spec-side h3{font-size:17px;margin-bottom:6px}
.spec-side .side-desc{font-size:13.5px;color:var(--tx-3);margin-bottom:18px}
.spec-rows li{display:grid;grid-template-columns:82px 1fr;gap:12px;padding:13px 0;border-bottom:1px solid var(--line-soft);font-size:14px}
.spec-rows li:last-child{border-bottom:0}
.spec-rows .k{color:var(--glow-cyan);font-size:13px}
.spec-rows .v{color:var(--tx-2)}
.spec-rows .v b{display:block;color:var(--tx-1);font-weight:600;margin-bottom:2px}
.spec-side .btn{width:100%;margin-top:18px}

/* ================= 玻璃卡片网格（错位） ================= */
.card-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.pcard{overflow:hidden;display:flex;flex-direction:column;transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.pcard:hover{transform:translateY(-4px);box-shadow:var(--sh-card),var(--sh-hover);border-color:rgba(34,211,238,.35)}
.pcard-media{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.pcard-media img{width:100%;height:100%;object-fit:cover;transition:transform 260ms ease-out}
.pcard:hover .pcard-media img{transform:scale(1.04)}
.pcard-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.pcard-body h3{font-size:19px}
.pcard-body p{font-size:14.6px;margin:0}
.mini-spec{display:flex;flex-wrap:wrap;gap:8px}
.mini-spec li{font-size:12.5px;color:var(--tx-3);padding:4px 10px;border-radius:var(--r-pill);border:1px solid var(--line-soft);background:rgba(255,255,255,.03);font-variant-numeric:tabular-nums}
.pcard-body .link-arrow{margin-top:auto}
.card-7{grid-column:span 7}
.card-5{grid-column:span 5}
.card-7 .pcard-media{aspect-ratio:16/8.4}
.card-5 .pcard-media{aspect-ratio:16/9.4}

/* ================= 表格 ================= */
.table-wrap{overflow-x:auto;border-radius:var(--r-card);border:1px solid var(--line);background:rgba(255,255,255,.03);box-shadow:var(--sh-card)}
table{width:100%;min-width:760px;border-collapse:collapse;font-size:14.5px}
thead th{text-align:left;padding:16px 20px;font-size:13px;letter-spacing:.04em;color:#A8F0FA;background:rgba(34,211,238,.07);border-bottom:1px solid var(--line);white-space:nowrap}
tbody td{padding:16px 20px;border-bottom:1px solid var(--line-soft);color:var(--tx-2);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:rgba(34,211,238,.05)}
tbody td:first-child{color:var(--tx-1);font-weight:600}
tbody td .num{color:var(--tx-1)}
.table-hint{margin-top:16px;font-size:13px;color:var(--tx-3)}

/* ================= FAQ ================= */
.faq{max-width:900px;margin:0 auto}
.faq-item{border:1px solid var(--line-soft);border-radius:var(--r-card);background:rgba(255,255,255,.03);margin-bottom:14px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t)}
.faq-item.is-open{border-color:rgba(34,211,238,.32);box-shadow:0 0 26px rgba(34,211,238,.1)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;padding:20px 22px;font-size:16px;font-weight:600;color:var(--tx-1)}
.faq-q .mark{flex:0 0 auto;width:24px;height:24px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--glow-cyan);font-size:15px;line-height:1;transition:transform var(--t),background var(--t)}
.faq-item.is-open .faq-q .mark{transform:rotate(180deg);background:rgba(34,211,238,.14)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms ease}
.faq-a-inner{padding:0 22px 22px;border-left:3px solid rgba(34,211,238,.6);margin-left:22px;padding-left:18px;font-size:15px;color:var(--tx-2);line-height:1.85}
.faq-a-inner p:last-child{margin-bottom:0}

/* ================= CTA 条 ================= */
.cta-band{position:relative;padding:42px 44px;border-radius:var(--r-card);overflow:hidden;background:rgba(255,255,255,.05);backdrop-filter:blur(14px) saturate(140%);border:1px solid rgba(34,211,238,.28);box-shadow:0 0 40px rgba(34,211,238,.12),var(--sh-card)}
.cta-band::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:linear-gradient(120deg,rgba(34,211,238,.5),transparent 45%,rgba(255,138,61,.45));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;position:relative}
.cta-inner h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:10px}
.cta-inner p{margin:0;font-size:15px;color:var(--tx-2);max-width:54em}
.cta-actions{display:flex;flex-direction:column;gap:14px;flex:0 0 auto}
.cta-actions .btn-row{display:flex;gap:12px;flex-wrap:wrap}
.cta-tel{font-size:13.5px;color:var(--tx-3)}
.cta-tel b{color:var(--cta-3);font-size:16px;font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ================= 页脚 ================= */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(12,20,32,.6),rgba(7,11,18,.98));padding:72px 0 28px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--tx-2);max-width:34em;margin-bottom:16px}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:var(--glow-cyan);margin-bottom:16px;font-weight:600}
.footer-col a,.footer-col li{display:block;font-size:14px;color:var(--tx-2);margin-bottom:10px;transition:color var(--t),transform var(--t)}
.footer-col a:hover{color:var(--glow-cyan);transform:translateX(2px)}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid var(--line-soft);display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px;color:var(--tx-3)}
.socials{display:flex;gap:12px}
.socials a{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;border:1px solid var(--line);color:var(--tx-2);background:rgba(255,255,255,.03);transition:all var(--t)}
.socials a:hover{color:var(--glow-cyan);border-color:rgba(34,211,238,.45);box-shadow:0 0 18px rgba(34,211,238,.16)}

/* ================= 响应式 ================= */
@media (max-width:1279px){
  .page-hero-grid{gap:36px}
  .search-box.is-open input{width:170px}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;top:68px;right:0;bottom:0;width:min(320px,86vw);
    flex-direction:column;align-items:flex-start;gap:4px;
    padding:26px 24px 40px;overflow-y:auto;
    background:rgba(9,14,22,.97);backdrop-filter:blur(18px);
    border-left:1px solid var(--line);transform:translateX(103%);
    transition:transform var(--t);z-index:95;
  }
  .nav-links.is-open{transform:none}
  .nav-links a{width:100%;font-size:17px;font-weight:600;padding:14px 0;border-bottom:1px solid var(--line-soft)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--glow-cyan)}
  .nav-toggle{display:block}
  .nav-contact{display:none}
  .search-box{display:none}
  body.nav-locked{overflow:hidden}
  .page-hero{padding-top:calc(68px + 40px)}
  .page-hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero h1{max-width:none}
  .split{grid-template-columns:1fr}
  .spec-side{position:static}
  .section{padding:72px 0}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px}
  .card-7,.card-5{grid-column:span 12}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .anchor-bar{top:68px}
  .section{padding:56px 0}
  .sec-head{margin-bottom:32px}
  .sec-head--row{flex-direction:column;align-items:flex-start}
  .card-grid{gap:20px}
  .hero-stats{gap:24px}
  .cta-band{padding:30px 24px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:56px 0 24px;margin-top:64px}
}
@media (max-width:560px){
  .nav-wrap{gap:12px}
  .logo-text span{display:none}
  .page-hero{padding-bottom:48px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-stats{border-top:0;padding-top:0;gap:20px}
  .hero-stats li{flex:1 1 45%}
  .hero-panel{padding:20px 18px}
  .text-block{padding:20px 18px}
  .pcard-body{padding:20px 18px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn-row{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .back-top{right:14px;bottom:16px}
}
@media (max-width:375px){
  h1{font-size:27px}
  .anchor-inner{gap:22px}
  .mini-spec li{font-size:12px}
}

/* roulang page: category2 */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1420;
  --bg-2:#121B29;
  --glow-cyan:#22D3EE;
  --cta-1:#FF8A3D;
  --cta-2:#FF6A2B;
  --cta-3:#FFA45C;
  --tx-1:#E9F1FA;
  --tx-2:#A9B8C9;
  --tx-3:#6E8091;
  --line:rgba(120,190,255,.14);
  --line-soft:rgba(255,255,255,.06);
  --ok:#2FD3A5;
  --warn:#FFC24B;
  --err:#FF6B6B;

  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --radius-hero:20px;

  --shadow-card:0 18px 40px rgba(0,0,0,.35);
  --shadow-hover:0 0 0 1px rgba(34,211,238,.35), 0 0 32px rgba(34,211,238,.16);
  --shadow-cta:0 12px 32px rgba(255,106,43,.32);

  --container:1240px;
  --nav-h:68px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--tx-2);
  background:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 12% -8%, rgba(34,211,238,.10), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(255,138,61,.08), transparent 60%);
  background-attachment:fixed;
  overflow-x:hidden;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
h1,h2,h3,h4{margin:0;color:var(--tx-1);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--glow-cyan);outline-offset:2px;border-radius:4px}
.num{font-family:Inter,"Barlow","PingFang SC",sans-serif;font-variant-numeric:tabular-nums}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

.skip-link{position:absolute;left:-9999px;top:0;z-index:400;background:var(--bg-2);color:var(--tx-1);padding:10px 16px;border-radius:0 0 10px 0}
.skip-link:focus{left:0}

/* ---------- 滚动进度 ---------- */
.progress-bar{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:linear-gradient(90deg,rgba(34,211,238,0),var(--glow-cyan));
  z-index:300;transition:width .12s linear;
}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;
  height:var(--nav-h);
  display:flex;align-items:center;
  background:transparent;
  transition:background .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(9,15,24,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.42);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.nav-left,.nav-right{display:flex;align-items:center;gap:20px}
.nav-right{gap:18px}

.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  font-family:Inter,"Barlow",sans-serif;font-size:16px;font-weight:700;letter-spacing:.02em;
  color:#04141A;
  background:linear-gradient(140deg,var(--glow-cyan),#0EA5B7 78%);
  box-shadow:0 0 0 1px rgba(34,211,238,.45),0 0 24px rgba(34,211,238,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text b{font-size:15px;color:var(--tx-1);letter-spacing:.02em}
.logo-text span{font-size:11px;color:var(--tx-3);letter-spacing:.08em}

.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--tx-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:var(--glow-cyan);transform:translateX(-50%);
  transition:width .24s var(--ease);border-radius:2px;
}
.nav-links a:hover{color:var(--tx-1)}
.nav-links a:hover::after,.nav-links a.is-active::after{width:100%}
.nav-links a.is-active{color:var(--tx-1)}

.search-box{display:flex;align-items:center;gap:8px;border-radius:999px;padding:4px 6px;border:1px solid transparent;transition:all .26s var(--ease)}
.search-box input{
  width:0;opacity:0;border:0;background:rgba(255,255,255,.05);
  border-radius:999px;padding:0;height:34px;font-size:13.5px;color:var(--tx-1);
  transition:width .26s var(--ease),opacity .2s var(--ease),padding .26s var(--ease);
}
.search-box input::placeholder{color:var(--tx-3)}
.search-box.is-open{border-color:var(--line);background:rgba(255,255,255,.045);backdrop-filter:blur(14px)}
.search-box.is-open input{width:260px;opacity:1;padding:0 14px}
.icon-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;color:var(--tx-2);transition:color .22s var(--ease),background .22s var(--ease)}
.icon-btn:hover{color:var(--glow-cyan);background:rgba(34,211,238,.08)}

.nav-contact{display:flex;flex-direction:column;line-height:1.25;text-align:right}
.nav-contact span{font-size:11px;color:var(--tx-3);letter-spacing:.06em}
.nav-contact b{font-size:14px;color:var(--tx-1);font-family:Inter,"Barlow",sans-serif;font-variant-numeric:tabular-nums}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-size:14.5px;font-weight:600;
  padding:12px 22px;border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:10px 18px;font-size:13.5px}
.btn-primary{
  color:#1A0C02;
  background:linear-gradient(135deg,var(--cta-1),var(--cta-2));
  box-shadow:0 8px 22px rgba(255,106,43,.26);
}
.btn-primary:hover{background:linear-gradient(135deg,var(--cta-3),var(--cta-1));transform:translateY(-2px);box-shadow:var(--shadow-cta)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  color:var(--tx-1);border-color:var(--line);
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(34,211,238,.5);color:#fff;transform:translateY(-2px);box-shadow:0 0 26px rgba(34,211,238,.16)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;
  border:1px solid var(--line);background:rgba(255,255,255,.045);
  position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:1.8px;border-radius:2px;
  background:var(--tx-1);transform:translateX(-50%);
  transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

body.nav-open::before{
  content:"";position:fixed;inset:0;z-index:110;
  background:rgba(3,7,12,.62);backdrop-filter:blur(3px);
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative}
.section--tight{padding:72px 0}
.section-head{max-width:820px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25}
.section-head p{margin-top:14px;font-size:16px;color:var(--tx-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:12px;letter-spacing:.14em;color:var(--glow-cyan);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--glow-cyan);opacity:.7}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;letter-spacing:.02em;
  border:1px solid var(--line);color:var(--tx-2);background:rgba(255,255,255,.045);
}
.badge--cyan{color:var(--glow-cyan);border-color:rgba(34,211,238,.4);background:rgba(34,211,238,.08)}
.badge--orange{color:var(--cta-3);border-color:rgba(255,138,61,.4);background:rgba(255,138,61,.08)}

.glass{
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  border-radius:var(--radius-card);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);
  margin-bottom:22px;overflow-x:auto;white-space:nowrap;scrollbar-width:none;
}
.breadcrumb::-webkit-scrollbar{display:none}
.breadcrumb a{color:var(--tx-3)}
.breadcrumb a:hover{color:var(--glow-cyan)}
.breadcrumb span.sep{opacity:.5}
.breadcrumb b{color:var(--tx-1);font-weight:500}

/* ---------- 分类 Hero ---------- */
.page-hero{
  position:relative;
  margin-top:var(--nav-h);
  min-height:320px;
  display:flex;align-items:center;
  padding:56px 0 52px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center right;
  opacity:.34;
  filter:saturate(115%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,var(--bg-0) 6%,rgba(7,11,18,.9) 42%,rgba(7,11,18,.62) 100%);
}
.page-hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center;
}
.page-hero h1{font-size:clamp(30px,4.2vw,52px);line-height:1.16;margin:16px 0 0}
.hero-sub{margin-top:16px;font-size:17px;color:var(--tx-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-metrics{display:flex;gap:34px;margin-top:34px;flex-wrap:wrap}
.metric b{display:block;font-size:26px;color:var(--cta-3);font-family:Inter,"Barlow",sans-serif;font-variant-numeric:tabular-nums;line-height:1.2}
.metric span{font-size:12.5px;color:var(--tx-3)}

.hero-panel{padding:26px;border-radius:var(--radius-hero)}
.hero-panel h2{font-size:17px;margin-bottom:6px}
.hero-panel .panel-note{font-size:13px;color:var(--tx-3);margin-bottom:18px}
.panel-list li{
  display:flex;gap:12px;padding:11px 0;border-top:1px solid var(--line-soft);
  font-size:14px;color:var(--tx-2);
}
.panel-list li:first-child{border-top:0}
.panel-list i{
  flex:none;width:22px;height:22px;border-radius:7px;margin-top:3px;
  display:grid;place-items:center;font-style:normal;font-size:11px;
  color:var(--glow-cyan);border:1px solid rgba(34,211,238,.42);background:rgba(34,211,238,.07);
  font-family:Inter,sans-serif;
}

/* ---------- 锚点 Tab ---------- */
.anchor-tabs{
  position:sticky;top:var(--nav-h);z-index:90;
  background:rgba(9,15,24,.88);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.anchor-tabs .container{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}
.anchor-tabs .container::-webkit-scrollbar{display:none}
.anchor-tabs a{
  position:relative;flex:none;padding:16px 4px;margin-right:22px;
  font-size:14px;color:var(--tx-3);font-weight:500;
}
.anchor-tabs a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--glow-cyan);transition:width .24s var(--ease);border-radius:2px;
}
.anchor-tabs a:hover{color:var(--tx-1)}
.anchor-tabs a.is-active{color:var(--tx-1)}
.anchor-tabs a.is-active::after{width:100%}

/* ---------- 引导段 ---------- */
.intro-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:44px;align-items:start}
.intro-text p+p{margin-top:18px}
.intro-text p{font-size:16.5px;line-height:1.9;color:var(--tx-2);max-width:780px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  padding:7px 14px;border-radius:999px;font-size:13px;
  border:1px solid var(--line);color:var(--tx-2);background:rgba(255,255,255,.04);
}
.intro-aside{padding:26px}
.intro-aside h3{font-size:18px;margin-bottom:8px}
.intro-aside p{font-size:14px;color:var(--tx-3)}
.check-list{margin-top:16px}
.check-list li{display:flex;gap:10px;padding:9px 0;font-size:14.5px;color:var(--tx-2);border-top:1px solid var(--line-soft)}
.check-list li:first-child{border-top:0}
.check-list li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:50%;margin-top:9px;
  background:var(--glow-cyan);box-shadow:0 0 10px rgba(34,211,238,.8);
}

/* ---------- 交替图文 ---------- */
.zigzag{display:flex;flex-direction:column;gap:70px}
.zig-row{display:grid;grid-template-columns:55% 45%;gap:44px;align-items:center}
.zig-row.is-reverse{grid-template-columns:45% 55%}
.zig-row.is-reverse .zig-media{order:2}
.zig-row.is-reverse .zig-body{order:1}
.zig-media{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  aspect-ratio:16/11;
}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.zig-media:hover img{transform:scale(1.04)}
.zig-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(7,11,18,0) 40%,rgba(7,11,18,.62));
}
.zig-media .media-tag{
  position:absolute;left:16px;top:16px;z-index:2;
}
.zig-body h3{font-size:clamp(20px,2.3vw,26px);line-height:1.35}
.zig-body p{margin-top:14px;font-size:16px;line-height:1.88;color:var(--tx-2)}
.zig-points{margin-top:20px;display:grid;gap:10px}
.zig-points li{
  display:flex;gap:12px;font-size:14.5px;color:var(--tx-2);
  padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.038);border:1px solid var(--line-soft);
}
.zig-points li b{color:var(--glow-cyan);font-weight:600;flex:none;font-family:Inter,sans-serif;font-size:13px;letter-spacing:.02em}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:12px;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:17px;top:12px;bottom:12px;width:1px;
  background:linear-gradient(180deg,rgba(34,211,238,.6),rgba(34,211,238,.06));
}
.tl-item{position:relative;padding:0 0 30px 58px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:2px;width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;
  font-family:Inter,"Barlow",sans-serif;font-size:13px;font-weight:700;color:var(--glow-cyan);
  border:1px solid rgba(34,211,238,.55);background:rgba(12,20,32,.92);
  box-shadow:0 0 18px rgba(34,211,238,.22);
}
.tl-card{padding:20px 24px}
.tl-card h3{font-size:18px;margin-bottom:6px}
.tl-card p{font-size:14.5px;color:var(--tx-2)}
.tl-meta{margin-top:10px;font-size:12.5px;color:var(--tx-3);letter-spacing:.02em}

/* ---------- 参数表 ---------- */
.table-wrap{
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow-x:auto;
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
}
table{width:100%;border-collapse:collapse;min-width:720px}
thead th{
  text-align:left;font-size:12.5px;letter-spacing:.08em;color:var(--glow-cyan);
  font-weight:600;padding:16px 22px;border-bottom:1px solid var(--line);
  background:rgba(34,211,238,.05);white-space:nowrap;
}
tbody td{
  padding:16px 22px;font-size:14.5px;color:var(--tx-2);
  border-bottom:1px solid var(--line-soft);vertical-align:top;
}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:rgba(255,255,255,.03)}
td strong{color:var(--tx-1);font-weight:600}
td .num{color:var(--cta-3);font-weight:600}
.table-hint{margin-top:14px;font-size:13px;color:var(--tx-3)}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px 22px 0;text-align:left;font-size:16px;font-weight:600;color:var(--tx-1);
  position:relative;transition:color .22s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:-14px;top:26px;bottom:26px;width:3px;border-radius:3px;
  background:var(--glow-cyan);opacity:0;transition:opacity .24s var(--ease);
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-q:hover{color:var(--glow-cyan)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:8px;position:relative;
  border:1px solid var(--line);transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--tx-2);
  transform:translate(-50%,-50%);transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq-icon::before{width:12px;height:1.6px}
.faq-icon::after{width:1.6px;height:12px}
.faq-item.is-open .faq-icon{border-color:rgba(34,211,238,.55)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--glow-cyan)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg) scaleY(0)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .34s var(--ease),opacity .28s var(--ease);
  opacity:0;
}
.faq-item.is-open .faq-a{opacity:1}
.faq-a p{padding:0 44px 24px 0;font-size:15px;line-height:1.85;color:var(--tx-2)}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;
  padding:44px 46px;border-radius:var(--radius-hero);
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  border:1px solid rgba(34,211,238,.28);
  background:
    radial-gradient(600px 220px at 8% 0%, rgba(34,211,238,.14), transparent 70%),
    linear-gradient(120deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 0 46px rgba(34,211,238,.12),inset 0 1px 0 rgba(255,255,255,.08);
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3}
.cta-panel p{margin-top:12px;font-size:15px;color:var(--tx-2);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.cta-contact{font-size:13px;color:var(--tx-3);margin-top:14px}
.cta-contact b{color:var(--tx-1);font-family:Inter,"Barlow",sans-serif;font-variant-numeric:tabular-nums}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:24px;
  padding:72px 0 26px;
  background:linear-gradient(180deg,rgba(12,20,32,.6),var(--bg-0));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.15fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--tx-2);max-width:400px}
.footer-brand .badge{margin-top:16px}
.footer-col h4{font-size:13.5px;color:var(--glow-cyan);letter-spacing:.08em;margin-bottom:16px;font-weight:600}
.footer-col a,.footer-col li{display:block;font-size:14px;color:var(--tx-2);padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--glow-cyan);transform:translateX(2px)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:var(--tx-3);
}
.socials{display:flex;gap:10px}
.socials a{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--tx-3);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.socials a:hover{color:var(--glow-cyan);border-color:rgba(34,211,238,.5);transform:translateY(-2px)}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:22px;bottom:26px;z-index:150;
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(12,20,32,.86);color:var(--tx-2);
  backdrop-filter:blur(12px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s,color .2s,border-color .2s;
}
.back-top.is-show{opacity:1;visibility:visible;transform:none}
.back-top:hover{color:var(--glow-cyan);border-color:rgba(34,211,238,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .nav-links{gap:20px}
  .container{padding:0 20px}
}
@media (max-width:1024px){
  .nav-toggle{display:block;position:relative;z-index:130}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(330px,86vw);z-index:120;
    flex-direction:column;align-items:flex-start;gap:0;
    padding:96px 26px 32px;
    background:rgba(8,14,24,.97);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .3s var(--ease);
  }
  .nav-links.is-open{transform:none}
  .nav-links a{width:100%;font-size:17px;padding:15px 0;border-bottom:1px solid var(--line-soft)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--glow-cyan)}
  .nav-contact{display:none}
  .search-box.is-open input{width:180px}

  .page-hero-inner{grid-template-columns:1fr;gap:32px}
  .page-hero{min-height:0;padding:44px 0 44px}
  .hero-panel{max-width:560px}
  .intro-grid{grid-template-columns:1fr;gap:30px}
  .zig-row,.zig-row.is-reverse{grid-template-columns:1fr;gap:24px}
  .zig-row.is-reverse .zig-media,.zig-row.is-reverse .zig-body{order:0}
  .section{padding:72px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .search-box{display:none}
  .hero-metrics{gap:22px}
  .metric b{font-size:22px}
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
  .cta-panel{padding:32px 26px}
  .faq-a p{padding-right:12px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .nav-right{gap:10px}
  .nav-right .btn-primary{display:none}
  .hero-actions .btn{flex:1 1 100%}
  .zigzag{gap:48px}
  .tl-item{padding-left:48px}
  .tl-dot{width:32px;height:32px;font-size:12px}
  .timeline::before{left:15px}
  .footer-grid{grid-template-columns:1fr}
  thead th,tbody td{padding:13px 16px}
  .back-top{right:14px;bottom:16px}
}
@media (max-width:375px){
  .logo-text span{display:none}
  .page-hero h1{font-size:27px}
}

/* roulang page: category3 */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1420;
  --bg-2:#121B29;
  --glow-cyan:#22D3EE;
  --cta-1:#FF8A3D;
  --cta-2:#FF6A2B;
  --cta-3:#FFA45C;
  --tx-1:#E9F1FA;
  --tx-2:#A9B8C9;
  --tx-3:#6E8091;
  --line:rgba(120,190,255,.14);
  --line-soft:rgba(255,255,255,.06);
  --ok:#2FD3A5;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-hero:20px;
  --r-pill:999px;
  --sh-card:0 18px 40px rgba(0,0,0,.35);
  --sh-hover:0 0 0 1px rgba(34,211,238,.35), 0 0 32px rgba(34,211,238,.16);
  --sh-cta:0 12px 32px rgba(255,106,43,.32);
  --container:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

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

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

body{
  margin:0;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 10% -6%, rgba(34,211,238,.13), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(255,106,43,.09), transparent 64%),
    radial-gradient(700px 500px at 50% 100%, rgba(34,211,238,.06), transparent 60%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  color:var(--tx-2);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

body.no-scroll{overflow:hidden;}

h1,h2,h3,h4,h5{
  margin:0;
  color:var(--tx-1);
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.25;
}

p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}

a{
  color:inherit;
  text-decoration:none;
  transition:color .22s var(--ease);
}

img{
  max-width:100%;
  display:block;
  border-radius:var(--r-img);
}

ul,ol{margin:0;padding:0;list-style:none;}

button{
  font-family:inherit;
  font-size:inherit;
  cursor:pointer;
  border:0;
  background:none;
  color:inherit;
}

input,textarea{
  font-family:inherit;
  font-size:inherit;
  color:var(--tx-1);
}

:focus-visible{
  outline:2px solid var(--glow-cyan);
  outline-offset:2px;
  border-radius:4px;
}

::selection{
  background:rgba(255,106,43,.32);
  color:#fff;
}

.num,.stat-num,.price{
  font-family:"Inter","Barlow","PingFang SC",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ============ 滚动进度 ============ */
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  height:2px;
  width:0;
  z-index:120;
  background:linear-gradient(90deg, rgba(34,211,238,.1), var(--glow-cyan));
  transition:width .1s linear;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
  white-space:nowrap;
}

.btn-primary{
  background:linear-gradient(135deg,var(--cta-1),var(--cta-2));
  color:#1A0D04;
  box-shadow:0 8px 22px rgba(255,106,43,.22);
}

.btn-primary:hover{
  background:linear-gradient(135deg,var(--cta-3),var(--cta-1));
  box-shadow:var(--sh-cta);
  transform:translateY(-2px);
}

.btn-primary:active{transform:translateY(0);}

.btn-ghost{
  background:var(--glass);
  border-color:var(--line);
  color:var(--tx-1);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}

.btn-ghost:hover{
  border-color:rgba(34,211,238,.55);
  color:#fff;
  box-shadow:0 0 0 1px rgba(34,211,238,.25), 0 0 26px rgba(34,211,238,.14);
  transform:translateY(-2px);
}

.btn-sm{padding:10px 18px;font-size:14px;}

.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--glow-cyan);
  font-size:14px;
  font-weight:600;
}

.btn-link i{transition:transform .22s var(--ease);}
.btn-link:hover i{transform:translateX(4px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.28);
  color:#8FE9F7;
}

.badge--orange{
  background:rgba(255,106,43,.12);
  border-color:rgba(255,138,61,.32);
  color:#FFB584;
}

.badge--ok{
  background:rgba(47,211,165,.1);
  border-color:rgba(47,211,165,.28);
  color:#7FE6C8;
}

.tag{
  display:inline-block;
  padding:3px 11px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--tx-3);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-soft);
}

/* ============ 玻璃 ============ */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), var(--sh-card);
}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:100;
  height:68px;
  display:flex;
  align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease), backdrop-filter .3s var(--ease);
}

.site-header.is-scrolled{
  background:rgba(7,11,18,.82);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px rgba(0,0,0,.42);
}

.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}

.nav-left{
  display:flex;
  align-items:center;
  gap:38px;
  min-width:0;
}

.logo{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex-shrink:0;
}

.logo-mark{
  width:40px;
  height:40px;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-family:"Inter","Barlow",sans-serif;
  font-weight:700;
  font-size:17px;
  letter-spacing:.02em;
  color:#04121A;
  background:linear-gradient(135deg,#5EE9F8,#22D3EE 55%,#0EA5B7);
  box-shadow:0 0 0 1px rgba(34,211,238,.45), 0 0 22px rgba(34,211,238,.3);
}

.logo-text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
}

.logo-text b{
  color:var(--tx-1);
  font-size:16px;
  font-weight:700;
  letter-spacing:.01em;
}

.logo-text span{
  color:var(--tx-3);
  font-size:11px;
  letter-spacing:.06em;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
}

.nav-links a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--tx-2);
  padding:6px 0;
  white-space:nowrap;
}

.nav-links a::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:0;
  height:2px;
  background:var(--glow-cyan);
  border-radius:2px;
  transition:left .24s var(--ease), right .24s var(--ease);
}

.nav-links a:hover{color:var(--tx-1);}
.nav-links a:hover::after{left:0;right:0;}
.nav-links a.is-active{color:var(--tx-1);font-weight:600;}
.nav-links a.is-active::after{left:0;right:0;box-shadow:0 0 12px rgba(34,211,238,.6);}

.nav-right{
  display:flex;
  align-items:center;
  gap:18px;
  flex-shrink:0;
}

.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  padding:0 4px;
}

.search-box .icon-btn{
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  border-radius:10px;
  color:var(--tx-2);
  transition:color .2s var(--ease), background .2s var(--ease);
}

.search-box .icon-btn:hover{
  color:var(--glow-cyan);
  background:rgba(34,211,238,.08);
}

.search-box input{
  width:0;
  opacity:0;
  padding:0;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);
  height:38px;
  transition:width .28s var(--ease), opacity .24s var(--ease), padding .28s var(--ease), border-color .24s var(--ease);
}

.search-box.is-open input{
  width:260px;
  opacity:1;
  padding:0 14px;
  border-color:var(--line);
}

.search-box input:focus{
  outline:none;
  border-color:rgba(34,211,238,.6);
  box-shadow:0 0 0 3px rgba(34,211,238,.14);
}

.search-box input::placeholder{color:var(--tx-3);}

.nav-contact{
  display:flex;
  flex-direction:column;
  line-height:1.25;
  text-align:right;
}

.nav-contact span{font-size:11px;color:var(--tx-3);letter-spacing:.04em;}
.nav-contact b{
  font-size:15px;
  color:var(--tx-1);
  font-family:"Inter","Barlow",sans-serif;
  font-variant-numeric:tabular-nums;
}

.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--glass);
  position:relative;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  background:var(--tx-1);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform .26s var(--ease), opacity .2s var(--ease), top .26s var(--ease);
}

.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}

.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg);}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg);}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  margin-top:68px;
  padding:76px 0 60px;
  min-height:300px;
  overflow:hidden;
  border-bottom:1px solid var(--line-soft);
  background-image:
    linear-gradient(100deg, rgba(7,11,18,.94) 8%, rgba(7,11,18,.7) 52%, rgba(7,11,18,.4) 100%),
    url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center right;
}

.cat-hero::after{
  content:"";
  position:absolute;
  inset:auto 0 -1px 0;
  height:120px;
  background:linear-gradient(180deg,transparent,rgba(7,11,18,.9));
  pointer-events:none;
}

.cat-hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);
  gap:44px;
  align-items:center;
}

.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--tx-3);
  margin-bottom:18px;
  white-space:nowrap;
  overflow-x:auto;
  scrollbar-width:none;
}

.breadcrumb::-webkit-scrollbar{display:none;}
.breadcrumb a{color:var(--tx-3);}
.breadcrumb a:hover{color:var(--glow-cyan);}
.breadcrumb .sep{color:rgba(110,128,145,.7);}
.breadcrumb .current{color:var(--tx-1);font-weight:600;}

.cat-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  margin-bottom:16px;
}

.cat-hero h1 em{
  font-style:normal;
  color:var(--glow-cyan);
  text-shadow:0 0 26px rgba(34,211,238,.35);
}

.hero-sub{
  font-size:16px;
  color:var(--tx-2);
  max-width:560px;
  margin-bottom:26px;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:30px;
}

.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:14px 34px;
}

.fact{
  display:flex;
  flex-direction:column;
  gap:2px;
}

.fact b{
  font-family:"Inter","Barlow",sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:24px;
  font-weight:700;
  color:var(--cta-1);
  line-height:1.1;
}

.fact span{font-size:13px;color:var(--tx-3);}

.hero-panel{
  padding:26px 24px;
  border-radius:var(--r-hero);
}

.hero-panel h3{
  font-size:16px;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:8px;
}

.hero-panel h3 i{color:var(--glow-cyan);font-size:15px;}

.panel-list li{
  display:flex;
  align-items:flex-start;
  gap:11px;
  padding:11px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:14px;
  color:var(--tx-2);
}

.panel-list li:last-child{border-bottom:0;padding-bottom:0;}

.panel-list i{
  color:var(--glow-cyan);
  font-size:13px;
  margin-top:6px;
  flex-shrink:0;
}

.panel-list b{color:var(--tx-1);font-weight:600;}

/* ============ 锚点 Tab ============ */
.anchor-tabs{
  position:sticky;
  top:68px;
  z-index:60;
  background:rgba(7,11,18,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-soft);
}

.anchor-tabs-inner{
  display:flex;
  align-items:center;
  gap:34px;
  overflow-x:auto;
  scrollbar-width:none;
}

.anchor-tabs-inner::-webkit-scrollbar{display:none;}

.anchor-tabs a{
  position:relative;
  padding:17px 0;
  font-size:14px;
  font-weight:500;
  color:var(--tx-3);
  white-space:nowrap;
}

.anchor-tabs a::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:0;
  height:2px;
  background:var(--glow-cyan);
  transition:left .24s var(--ease), right .24s var(--ease);
}

.anchor-tabs a:hover{color:var(--tx-1);}
.anchor-tabs a.is-active{color:var(--tx-1);font-weight:600;}
.anchor-tabs a.is-active::after{left:0;right:0;box-shadow:0 0 12px rgba(34,211,238,.55);}

/* ============ 通用板块 ============ */
.section{
  padding:96px 0;
}

.section--tight{padding:76px 0;}

.section-head{
  max-width:760px;
  margin-bottom:48px;
}

.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--glow-cyan);
  text-transform:uppercase;
  margin-bottom:14px;
}

.section-head .eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--glow-cyan);
  box-shadow:0 0 12px rgba(34,211,238,.7);
}

.section-head h2{
  font-size:clamp(24px,3vw,36px);
  margin-bottom:14px;
}

.section-head p{
  font-size:16px;
  color:var(--tx-2);
}

/* ============ 全宽大图叠字 ============ */
.feature-banner{
  position:relative;
  border-radius:var(--r-hero);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  min-height:420px;
  display:flex;
  align-items:flex-end;
}

.feature-banner img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:0;
}

.feature-banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg, rgba(7,11,18,.94) 0%, rgba(7,11,18,.78) 42%, rgba(7,11,18,.28) 100%);
}

.banner-copy{
  position:relative;
  z-index:2;
  max-width:560px;
  padding:48px 44px;
}

.banner-copy .badge{margin-bottom:16px;}

.banner-copy h3{
  font-size:clamp(22px,2.5vw,30px);
  margin-bottom:14px;
}

.banner-copy p{
  font-size:15px;
  color:var(--tx-2);
  margin-bottom:22px;
}

.banner-stats{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

.banner-stat{
  padding:12px 18px;
  border-radius:12px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  min-width:120px;
}

.banner-stat b{
  display:block;
  font-family:"Inter","Barlow",sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:22px;
  color:var(--cta-1);
  line-height:1.15;
}

.banner-stat span{font-size:12px;color:var(--tx-3);}

/* ============ 编号要点列表 ============ */
.num-list{
  display:grid;
  gap:14px;
}

.num-item{
  display:grid;
  grid-template-columns:88px minmax(0,1fr);
  gap:24px;
  align-items:flex-start;
  padding:28px 30px;
  border-radius:var(--r-card);
  background:rgba(255,255,255,.028);
  border:1px solid var(--line-soft);
  transition:border-color .24s var(--ease), background .24s var(--ease), transform .24s var(--ease), box-shadow .24s var(--ease);
}

.num-item:hover{
  transform:translateY(-3px);
  background:var(--glass);
  border-color:rgba(34,211,238,.32);
  box-shadow:var(--sh-hover);
}

.num-index{
  font-family:"Inter","Barlow",sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:42px;
  font-weight:700;
  line-height:1;
  color:var(--cta-2);
  text-shadow:0 0 26px rgba(255,106,43,.32);
  letter-spacing:-.02em;
}

.num-body h3{
  font-size:19px;
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}

.num-body p{
  font-size:15px;
  color:var(--tx-2);
  margin-bottom:0;
}

.num-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:14px;
}

/* ============ 两列玻璃信息卡 7:5 ============ */
.info-cards{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:24px;
  align-items:start;
}

.info-card{
  padding:34px 32px;
  border-radius:var(--r-card);
}

.info-card h3{
  font-size:20px;
  margin-bottom:8px;
}

.info-card .card-desc{
  font-size:14px;
  color:var(--tx-3);
  margin-bottom:24px;
}

.spec-table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
}

.spec-table th,
.spec-table td{
  text-align:left;
  padding:14px 12px;
  font-size:14px;
  border-bottom:1px solid var(--line-soft);
  vertical-align:top;
}

.spec-table th{
  color:var(--tx-3);
  font-weight:500;
  width:38%;
}

.spec-table td{
  color:var(--tx-1);
  font-weight:500;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td{border-bottom:0;}

.spec-table td .hl{
  color:var(--cta-1);
  font-family:"Inter","Barlow",sans-serif;
  font-variant-numeric:tabular-nums;
}

.check-list li{
  display:flex;
  align-items:flex-start;
  gap:11px;
  padding:13px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:14px;
  color:var(--tx-2);
}

.check-list li:last-child{border-bottom:0;}

.check-list i{
  color:var(--ok);
  font-size:13px;
  margin-top:6px;
  flex-shrink:0;
}

.check-list b{color:var(--tx-1);display:block;font-weight:600;font-size:15px;}

/* ============ 保障条 ============ */
.assure-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}

.assure-item{
  padding:30px 26px;
  border-right:1px solid var(--line-soft);
  transition:background .24s var(--ease);
}

.assure-item:last-child{border-right:0;}
.assure-item:hover{background:rgba(34,211,238,.05);}

.assure-item i{
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  border-radius:12px;
  border:1px solid rgba(34,211,238,.4);
  color:var(--glow-cyan);
  font-size:16px;
  margin-bottom:16px;
  box-shadow:0 0 18px rgba(34,211,238,.14);
}

.assure-item h3{
  font-size:16px;
  margin-bottom:7px;
}

.assure-item p{
  font-size:13px;
  color:var(--tx-3);
  margin:0;
  line-height:1.7;
}

/* ============ FAQ ============ */
.faq-list{
  display:grid;
  gap:12px;
  max-width:900px;
}

.faq-item{
  position:relative;
  border-radius:var(--r-card);
  border:1px solid var(--line-soft);
  background:rgba(255,255,255,.028);
  overflow:hidden;
  transition:border-color .24s var(--ease), background .24s var(--ease);
}

.faq-item::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:transparent;
  transition:background .24s var(--ease), box-shadow .24s var(--ease);
}

.faq-item.is-open{
  border-color:rgba(34,211,238,.3);
  background:var(--glass);
}

.faq-item.is-open::before{
  background:var(--glow-cyan);
  box-shadow:0 0 14px rgba(34,211,238,.6);
}

.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 26px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--tx-1);
  transition:color .22s var(--ease);
}

.faq-q:hover{color:var(--glow-cyan);}

.faq-icon{
  position:relative;
  width:20px;
  height:20px;
  flex-shrink:0;
}

.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--glow-cyan);
  border-radius:2px;
  transition:transform .28s var(--ease), opacity .24s var(--ease);
}

.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}

.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}

.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s var(--ease);
}

.faq-a-inner{
  padding:0 26px 24px;
  font-size:15px;
  line-height:1.8;
  color:var(--tx-2);
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  border-radius:var(--r-hero);
  border:1px solid rgba(34,211,238,.24);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), 0 0 44px rgba(34,211,238,.1), var(--sh-card);
  padding:44px 44px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:34px;
  align-items:center;
}

.cta-band h2{
  font-size:clamp(22px,2.6vw,30px);
  margin-bottom:10px;
}

.cta-band p{
  font-size:15px;
  color:var(--tx-2);
  margin:0;
  max-width:620px;
}

.cta-actions{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:14px;
}

.cta-buttons{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  justify-content:flex-end;
}

.cta-contact{
  font-size:13px;
  color:var(--tx-3);
}

.cta-contact b{
  color:var(--tx-1);
  font-family:"Inter","Barlow",sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:15px;
  margin-left:6px;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(12,20,32,.4), rgba(7,11,18,.96));
}

.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.1fr);
  gap:44px;
  padding:72px 0 52px;
}

.footer-brand .logo{margin-bottom:18px;}

.footer-brand p{
  font-size:14px;
  color:var(--tx-3);
  line-height:1.8;
  margin-bottom:18px;
  max-width:400px;
}

.footer-col h4{
  font-size:14px;
  color:var(--glow-cyan);
  margin-bottom:18px;
  letter-spacing:.04em;
  font-weight:600;
}

.footer-col a,
.footer-col li{
  display:block;
  font-size:14px;
  color:var(--tx-2);
  margin-bottom:12px;
  line-height:1.65;
  transition:color .2s var(--ease), transform .2s var(--ease);
}

.footer-col a:hover{
  color:var(--glow-cyan);
  transform:translateX(2px);
}

.footer-col ul{margin:0;}

.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  padding:22px 0 30px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:var(--tx-3);
}

.socials{
  display:flex;
  gap:10px;
}

.socials a{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--tx-2);
  transition:color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}

.socials a:hover{
  color:var(--glow-cyan);
  border-color:rgba(34,211,238,.5);
  box-shadow:0 0 18px rgba(34,211,238,.18);
  transform:translateY(-2px);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;
  right:24px;
  bottom:28px;
  z-index:90;
  width:44px;
  height:44px;
  border-radius:12px;
  display:grid;
  place-items:center;
  background:var(--glass-strong);
  border:1px solid var(--line);
  color:var(--tx-1);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .26s var(--ease), transform .26s var(--ease), visibility .26s, border-color .22s var(--ease), color .22s var(--ease);
}

.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{color:var(--glow-cyan);border-color:rgba(34,211,238,.5);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .section{padding:84px 0;}
  .cat-hero-inner{grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);gap:32px;}
}

@media (max-width:1023px){
  .nav-links{
    position:fixed;
    top:68px;
    right:0;
    bottom:0;
    width:min(340px,84vw);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:28px 26px 36px;
    background:rgba(9,14,22,.96);
    backdrop-filter:blur(18px) saturate(150%);
    -webkit-backdrop-filter:blur(18px) saturate(150%);
    border-left:1px solid var(--line);
    box-shadow:-24px 0 60px rgba(0,0,0,.5);
    transform:translateX(105%);
    transition:transform .3s var(--ease);
    overflow-y:auto;
  }

  .nav-links.is-open{transform:translateX(0);}

  .nav-links a{
    width:100%;
    padding:16px 0;
    font-size:17px;
    font-weight:600;
    border-bottom:1px solid var(--line-soft);
  }

  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--glow-cyan);}

  .nav-toggle{display:grid;place-items:center;}
  .search-box{display:none;}
  .nav-contact{display:none;}

  .cat-hero{padding:56px 0 48px;}
  .cat-hero-inner{grid-template-columns:minmax(0,1fr);gap:30px;}
  .hero-panel{max-width:560px;}
  .anchor-tabs{top:68px;}

  .info-cards{grid-template-columns:minmax(0,1fr);}
  .assure-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .assure-item:nth-child(2){border-right:0;}
  .assure-item:nth-child(1),
  .assure-item:nth-child(2){border-bottom:1px solid var(--line-soft);}

  .cta-band{grid-template-columns:minmax(0,1fr);padding:36px 30px;}
  .cta-actions{align-items:flex-start;}
  .cta-buttons{justify-content:flex-start;}

  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;padding:56px 0 40px;}
}

@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section--tight{padding:56px 0;}
  .section-head{margin-bottom:34px;}

  .cat-hero{margin-top:68px;min-height:auto;}
  .cat-hero h1{font-size:clamp(27px,7vw,34px);}
  .hero-sub{font-size:15px;}

  .feature-banner{min-height:auto;}
  .banner-copy{padding:32px 24px;}
  .banner-stats{gap:10px;}

  .num-item{grid-template-columns:56px minmax(0,1fr);gap:16px;padding:22px 20px;}
  .num-index{font-size:30px;}

  .assure-item{padding:24px 20px;}

  .faq-q{padding:18px 20px;font-size:15px;}
  .faq-a-inner{padding:0 20px 20px;}

  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}

  .to-top{right:16px;bottom:18px;}
}

@media (max-width:520px){
  .container{padding:0 16px;}
  .logo-text span{display:none;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;justify-content:center;}
  .assure-strip{grid-template-columns:minmax(0,1fr);}
  .assure-item{border-right:0;border-bottom:1px solid var(--line-soft);}
  .assure-item:last-child{border-bottom:0;}
  .spec-table th,
  .spec-table td{padding:12px 8px;font-size:13px;}
  .cta-band{padding:28px 22px;}
  .cta-buttons{width:100%;}
  .cta-buttons .btn{flex:1 1 auto;justify-content:center;}
}

@media (max-width:375px){
  .hero-facts{gap:10px 22px;}
  .fact b{font-size:20px;}
  .banner-stat{width:100%;}
}