/* roulang page: index */
:root{
  --bg-0:#070C16;
  --bg-1:#0A1222;
  --bg-2:#0E1728;
  --cyan:#3BE8FF;
  --cyan-soft:rgba(59,232,255,.16);
  --amber:#FFB454;
  --violet:#7C8CFF;
  --text:#C9D4E5;
  --text-2:#8FA1B8;
  --line:rgba(255,255,255,.08);
  --line-cyan:rgba(59,232,255,.16);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.075);
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:22px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(59,232,255,.5), 0 0 28px rgba(59,232,255,.35);
  --container:1240px;
  --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;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(circle at 16% 10%,rgba(59,232,255,.10),transparent 46%),
    radial-gradient(circle at 84% 82%,rgba(124,140,255,.10),transparent 50%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.35;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:26px 26px;
}
img{max-width:100%;display:block;border-radius:var(--radius-m);}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--cyan);}
h1,h2,h3,h4{margin:0;color:#EAF2FF;font-weight:800;letter-spacing:-.01em;line-height:1.2;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:3px solid rgba(59,232,255,.75);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(59,232,255,.28);color:#fff;}
.container{
  position:relative;
  z-index:1;
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{
  position:relative;
  z-index:1;
  padding:110px 0;
}
.section--tight{padding:84px 0;}
.section-head{margin-bottom:48px;max-width:820px;}
.section-head h2{font-size:2rem;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:1rem;line-height:1.85;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.8rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cyan);
  background:rgba(59,232,255,.08);
  border:1px solid var(--line-cyan);
  border-radius:999px;
  padding:7px 16px;
  font-weight:600;
}
.eyebrow--amber{color:var(--amber);background:rgba(255,180,84,.08);border-color:rgba(255,180,84,.28);}
.text-cyan{color:var(--cyan);}
.text-amber{color:var(--amber);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 26px;
  border-radius:999px;
  font-size:.95rem;
  font-weight:700;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn i{font-size:.95em;}
.btn-primary{
  background:linear-gradient(135deg,rgba(59,232,255,.95),rgba(59,232,255,.72));
  color:#03121B;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#03121B;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(59,232,255,.7),0 0 38px rgba(59,232,255,.55);
}
.btn-amber{
  background:linear-gradient(135deg,#FFC presión,#FFB454);
  background:linear-gradient(135deg,#FFD08A,#FFB454);
  color:#231502;
  box-shadow:0 0 0 1px rgba(255,180,84,.5),0 0 26px rgba(255,180,84,.28);
}
.btn-amber:hover{
  color:#231502;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(255,180,84,.75),0 0 36px rgba(255,180,84,.45);
}
.btn-ghost{
  background:transparent;
  border:1px solid var(--line-cyan);
  color:var(--text);
}
.btn-ghost:hover{
  color:var(--cyan);
  background:rgba(59,232,255,.08);
  border-color:rgba(59,232,255,.45);
  transform:translateY(-2px);
}
.btn-sm{min-height:42px;padding:0 20px;font-size:.875rem;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0) scale(.99);}
.btn[disabled]{opacity:.45;pointer-events:none;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.75rem;
  font-weight:600;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  letter-spacing:.02em;
}
.badge--cyan{color:var(--cyan);border-color:rgba(59,232,255,.3);background:rgba(59,232,255,.08);}
.badge--amber{color:var(--amber);border-color:rgba(255,180,84,.3);background:rgba(255,180,84,.08);}
.badge--violet{color:var(--violet);border-color:rgba(124,140,255,.3);background:rgba(124,140,255,.09);}

/* ============ 玻璃卡片 ============ */
.glass{
  background:var(--glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line-cyan);
  border-radius:var(--radius-m);
  box-shadow:var(--shadow);
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,12,22,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:78px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  width:42px;height:42px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,rgba(59,232,255,.22),rgba(124,140,255,.16));
  border:1px solid rgba(59,232,255,.35);
  color:var(--cyan);
  font-size:1.05rem;
  box-shadow:0 0 24px rgba(59,232,255,.22);
}
.brand-text{
  font-size:1.12rem;
  font-weight:800;
  color:#EAF2FF;
  letter-spacing:.01em;
}
.brand-text span{color:var(--cyan);}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:18px;
}
.nav-item{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 16px;
  border-radius:10px;
  font-size:.94rem;
  font-weight:600;
  color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-item:hover{color:var(--cyan);background:rgba(59,232,255,.06);}
.nav-item.is-active{color:var(--cyan);}
.nav-item.is-active::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(59,232,255,.85);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.mega-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  background:transparent;
  border:1px solid var(--line-cyan);
  color:var(--text);
  font-size:.9rem;
  font-weight:600;
  transition:all .2s var(--ease);
}
.mega-toggle:hover{color:var(--cyan);background:rgba(59,232,255,.08);}
.mega-toggle i{transition:transform .25s var(--ease);font-size:.78rem;}
.mega-toggle[aria-expanded="true"] i{transform:rotate(180deg);}
.menu-toggle{
  display:none;
  width:46px;height:46px;
  border-radius:12px;
  background:transparent;
  border:1px solid var(--line-cyan);
  color:var(--cyan);
  font-size:1.1rem;
}
.mega-panel{
  position:absolute;
  top:100%;
  left:0;right:0;
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  padding:0 0 22px;
}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mega-inner{
  display:grid;
  grid-template-columns:1fr 1fr 1.15fr;
  gap:26px;
  padding:28px;
  background:rgba(10,18,34,.96);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line-cyan);
  border-radius:var(--radius-l);
  box-shadow:var(--shadow);
}
.mega-col h3{
  font-size:.82rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-2);
  margin-bottom:16px;
  font-weight:700;
}
.mega-col ul li{margin-bottom:6px;}
.mega-col ul a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 12px;
  border-radius:10px;
  font-size:.9rem;
  color:var(--text);
  transition:all .18s var(--ease);
}
.mega-col ul a:hover{background:rgba(59,232,255,.08);color:var(--cyan);padding-left:16px;}
.mega-col ul a i{color:var(--cyan);font-size:.72rem;}
.mega-card{
  padding:20px;
  border-radius:var(--radius-m);
  background:linear-gradient(150deg,rgba(59,232,255,.12),rgba(124,140,255,.08));
  border:1px solid var(--line-cyan);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.mega-card strong{color:#EAF2FF;font-size:1rem;}
.mega-card p{font-size:.85rem;color:var(--text-2);line-height:1.7;}
.mobile-nav{
  display:none;
  border-top:1px solid var(--line);
  padding:16px 0 22px;
  background:rgba(10,18,34,.98);
}
.mobile-nav.is-open{display:block;}
.mobile-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:50px;
  padding:0 6px;
  border-bottom:1px solid var(--line);
  font-weight:600;
  color:var(--text);
}
.mobile-nav a:last-child{border-bottom:0;}
.mobile-nav a i{color:var(--text-2);font-size:.78rem;}
.mobile-nav a.is-active{color:var(--cyan);}
.mobile-nav a.is-active i{color:var(--cyan);}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  padding:96px 0 100px;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.30;
  filter:saturate(.85);
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(7,12,22,.96) 12%,rgba(7,12,22,.78) 52%,rgba(7,12,22,.92) 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2.3rem,4.4vw,3.6rem);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.02em;
  margin:22px 0 20px;
}
.hero h1 em{
  font-style:normal;
  color:var(--cyan);
  text-shadow:0 0 34px rgba(59,232,255,.38);
}
.hero-sub{
  font-size:1.06rem;
  line-height:1.9;
  color:var(--text-2);
  max-width:600px;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin:34px 0 26px;
}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px 22px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.trust-item{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:.85rem;
  color:var(--text-2);
}
.trust-item i{color:var(--cyan);font-size:.9rem;}
.hero-visual{position:relative;}
.hero-shot{
  position:relative;
  padding:14px;
  border-radius:var(--radius-l);
  background:var(--glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow),0 0 60px rgba(59,232,255,.12);
}
.hero-shot img{border-radius:14px;width:100%;height:auto;}
.hero-float{
  position:absolute;
  left:-22px;
  bottom:36px;
  padding:14px 18px;
  border-radius:14px;
  background:rgba(10,18,34,.94);
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow);
  display:flex;
  align-items:center;
  gap:12px;
}
.hero-float i{color:var(--amber);font-size:1.15rem;}
.hero-float span{font-size:.8rem;color:var(--text-2);display:block;}
.hero-float strong{font-size:.95rem;color:#EAF2FF;}

/* ============ 卖点 ============ */
.value-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.value-card{
  position:relative;
  padding:30px 28px;
  border-radius:var(--radius-m);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.value-card:nth-child(2){margin-top:26px;}
.value-card:nth-child(3){margin-top:-26px;}
.value-card:hover{border-color:var(--line-cyan);transform:translateY(-4px);}
.value-icon{
  width:52px;height:52px;
  display:grid;place-items:center;
  border-radius:14px;
  background:rgba(59,232,255,.09);
  border:1px solid rgba(59,232,255,.26);
  color:var(--cyan);
  font-size:1.15rem;
  margin-bottom:18px;
}
.value-card:nth-child(2) .value-icon{color:var(--amber);background:rgba(255,180,84,.09);border-color:rgba(255,180,84,.26);}
.value-card:nth-child(3) .value-icon{color:var(--violet);background:rgba(124,140,255,.09);border-color:rgba(124,140,255,.26);}
.value-card h3{font-size:1.14rem;margin-bottom:10px;}
.value-card p{font-size:.9rem;color:var(--text-2);line-height:1.8;}

/* ============ 轮播 ============ */
.shot-wrap{position:relative;}
.shot-track{
  display:flex;
  gap:24px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 2px 24px;
  scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 calc((100% - 48px)/2.6);
  scroll-snap-align:start;
  border-radius:var(--radius-m);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.shot-card:hover{border-color:var(--line-cyan);transform:translateY(-4px);}
.shot-card img{
  border-radius:0;
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.shot-card:hover img{transform:scale(1.04);}
.shot-body{padding:20px 22px 24px;}
.shot-body h3{font-size:1.05rem;margin:12px 0 8px;}
.shot-body p{font-size:.86rem;color:var(--text-2);line-height:1.75;}
.shot-tags{display:flex;gap:8px;flex-wrap:wrap;}
.shot-nav{display:flex;gap:10px;justify-content:flex-end;margin-top:4px;}
.circle-btn{
  width:46px;height:46px;
  display:grid;place-items:center;
  border-radius:50%;
  background:transparent;
  border:1px solid var(--line-cyan);
  color:var(--cyan);
  transition:all .2s var(--ease);
}
.circle-btn:hover{background:rgba(59,232,255,.12);box-shadow:0 0 22px rgba(59,232,255,.3);}
.circle-btn:active{transform:scale(.95);}
.dots{display:flex;gap:8px;justify-content:center;margin-top:14px;}
.dots span{
  width:8px;height:8px;border-radius:50%;
  background:rgba(255,255,255,.16);
  transition:all .25s var(--ease);
}
.dots span.on{width:26px;border-radius:4px;background:var(--cyan);box-shadow:0 0 14px rgba(59,232,255,.6);}

/* ============ 系统要求 ============ */
.spec-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(258px,1fr));
  gap:22px;
}
.spec-card{
  padding:26px 24px;
  border-radius:var(--radius-m);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.spec-card:hover{border-color:var(--line-cyan);transform:translateY(-4px);}
.spec-head{
  display:flex;
  align-items:center;
  gap:12px;
  padding-bottom:16px;
  margin-bottom:18px;
  border-bottom:1px solid var(--line);
}
.spec-head i{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:11px;
  background:rgba(59,232,255,.09);
  border:1px solid rgba(59,232,255,.24);
  color:var(--cyan);
  font-size:1rem;
}
.spec-head strong{font-size:1rem;color:#EAF2FF;}
.spec-row{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:14px;
  padding:9px 0;
  font-size:.86rem;
}
.spec-row span{color:var(--text-2);flex-shrink:0;}
.spec-row b{color:var(--text);font-weight:600;text-align:right;}
.spec-row b.hl{color:var(--amber);}
.spec-note{
  margin-top:16px;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:.8rem;
  color:var(--text-2);
  line-height:1.7;
}

/* ============ 评价墙 ============ */
.review-columns{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.review-col{display:flex;flex-direction:column;gap:24px;}
.review-col:nth-child(2){margin-top:52px;}
.review-card{
  padding:24px 24px 22px;
  border-radius:var(--radius-m);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.review-card:hover{border-color:var(--line-cyan);transform:translateY(-4px);}
.review-top{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.review-top img{
  width:46px;height:46px;
  border-radius:50%;
  object-fit:cover;
  border:1px solid var(--line-cyan);
}
.review-name{font-size:.94rem;font-weight:700;color:#EAF2FF;}
.review-meta{font-size:.76rem;color:var(--text-2);}
.stars{color:var(--amber);font-size:.78rem;letter-spacing:2px;margin-bottom:10px;}
.review-card p{font-size:.9rem;line-height:1.8;color:var(--text);}

/* ============ 下载区 ============ */
.download{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-l);
  padding:52px 48px;
  background:linear-gradient(140deg,rgba(10,18,34,.96),rgba(14,23,40,.9));
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow),0 0 70px rgba(59,232,255,.1);
}
.download::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(59,232,255,.13) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.6;
  pointer-events:none;
}
.download-inner{
  position:relative;
  display:grid;
  grid-template-columns:1.5fr 1fr;
  gap:44px;
  align-items:center;
}
.download h2{font-size:1.9rem;margin-bottom:14px;}
.download p.lead{color:var(--text-2);font-size:.96rem;line-height:1.85;margin-bottom:26px;}
.dl-buttons{display:flex;flex-wrap:wrap;gap:14px;}
.dl-meta{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px 24px;
  margin-top:28px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:.84rem;
}
.dl-meta div{display:flex;gap:10px;color:var(--text-2);}
.dl-meta div b{color:var(--text);font-weight:600;}
.qr-box{
  padding:24px;
  border-radius:var(--radius-m);
  background:var(--glass-2);
  border:1px solid var(--line-cyan);
  text-align:center;
}
.qr-box img{
  width:150px;height:150px;
  margin:0 auto 16px;
  border-radius:12px;
  object-fit:cover;
}
.qr-box strong{display:block;font-size:.92rem;color:#EAF2FF;margin-bottom:6px;}
.qr-box span{font-size:.78rem;color:var(--text-2);}

/* ============ 最新信息 ============ */
.news-layout{
  display:grid;
  grid-template-columns:280px 1fr;
  gap:52px;
  align-items:start;
}
.news-side h2{font-size:1.85rem;margin-bottom:14px;}
.news-side p{font-size:.9rem;color:var(--text-2);line-height:1.85;margin-bottom:22px;}
.news-list{display:flex;flex-direction:column;gap:16px;}
.news-item{
  border-radius:var(--radius-m);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  transition:border-color .25s var(--ease),transform .25s var(--ease),background .25s var(--ease);
}
.news-item:hover{border-color:var(--line-cyan);transform:translateX(4px);background:var(--glass-2);}
.news-link{
  display:grid;
  grid-template-columns:96px 1fr auto;
  gap:22px;
  align-items:center;
  padding:20px 24px;
}
.news-time-col{
  border-right:1px solid var(--line);
  padding-right:18px;
}
.news-time-col time{
  display:block;
  font-size:.78rem;
  color:var(--text-2);
  letter-spacing:.02em;
}
.news-time-col .news-cat{
  display:inline-block;
  margin-top:8px;
  font-size:.72rem;
  color:var(--cyan);
  border:1px solid rgba(59,232,255,.28);
  background:rgba(59,232,255,.07);
  border-radius:999px;
  padding:2px 10px;
}
.news-main h3{font-size:1.02rem;margin-bottom:8px;transition:color .2s var(--ease);}
.news-item:hover .news-main h3{color:var(--cyan);}
.news-main p{font-size:.86rem;color:var(--text-2);line-height:1.75;}
.news-arrow{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-cyan);
  color:var(--cyan);
  font-size:.8rem;
  transition:all .25s var(--ease);
}
.news-item:hover .news-arrow{background:rgba(59,232,255,.14);box-shadow:0 0 20px rgba(59,232,255,.3);}
.news-empty{
  padding:56px 28px;
  text-align:center;
  border-radius:var(--radius-m);
  border:1px dashed var(--line-cyan);
  background:rgba(255,255,255,.03);
}
.news-empty i{font-size:2rem;color:var(--text-2);margin-bottom:16px;display:block;}
.news-empty p{color:var(--text-2);font-size:.92rem;margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .25s var(--ease);
}
.faq-item.is-open{border-color:var(--line-cyan);border-left:3px solid var(--cyan);}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  width:100%;
  padding:22px 26px;
  background:transparent;
  border:0;
  text-align:left;
  color:#EAF2FF;
  font-size:1rem;
  font-weight:700;
  line-height:1.6;
}
.faq-q .faq-icon{
  flex-shrink:0;
  width:30px;height:30px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-cyan);
  color:var(--cyan);
  font-size:.78rem;
  transition:transform .25s var(--ease),background .25s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(59,232,255,.14);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s var(--ease);
}
.faq-a-inner{
  padding:0 26px 24px;
  color:var(--text-2);
  font-size:.92rem;
  line-height:1.9;
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  padding:96px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  text-align:center;
}
.cta-band-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.22;
}
.cta-band-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,.9),rgba(7,12,22,.97));
}
.cta-band h2{font-size:clamp(1.7rem,3vw,2.3rem);margin-bottom:16px;}
.cta-band p{color:var(--text-2);max-width:660px;margin:0 auto 32px;font-size:.98rem;line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:1;
  padding:72px 0 30px;
  background:rgba(7,12,22,.9);
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:46px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{font-size:.87rem;color:var(--text-2);line-height:1.85;margin-top:16px;max-width:320px;}
.footer-col h4{
  font-size:.86rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--text-2);
  font-weight:700;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:.89rem;color:var(--text);}
.footer-col ul a:hover{color:var(--cyan);}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:.86rem;
  color:var(--text-2);
  margin-bottom:12px;
}
.footer-contact i{color:var(--cyan);margin-top:5px;font-size:.8rem;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  align-items:center;
  justify-content:space-between;
  padding-top:24px;
  font-size:.8rem;
  color:var(--text-2);
}
.footer-bottom a:hover{color:var(--cyan);}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:84px 0;}
  .main-nav{display:none;}
  .menu-toggle{display:grid;place-items:center;}
  .nav-actions .mega-toggle{display:none;}
  .hero{padding:72px 0 76px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-visual{max-width:640px;}
  .value-card:nth-child(2),.value-card:nth-child(3){margin-top:0;}
  .shot-card{flex:0 0 calc((100% - 24px)/1.6);}
  .news-layout{grid-template-columns:1fr;gap:32px;}
  .download{padding:40px 32px;}
  .download-inner{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media screen and (max-width:768px){
  .section{padding:64px 0;}
  .section-head{margin-bottom:34px;}
  .section-head h2{font-size:1.6rem;}
  .hero h1{font-size:clamp(1.9rem,7vw,2.5rem);}
  .hero-sub{font-size:1rem;}
  .value-grid{grid-template-columns:1fr;}
  .review-columns{grid-template-columns:1fr;gap:20px;}
  .review-col:nth-child(2){margin-top:0;}
  .spec-grid{grid-template-columns:1fr;}
  .shot-card{flex:0 0 86%;}
  .news-link{grid-template-columns:1fr;gap:14px;padding:20px;}
  .news-time-col{border-right:0;border-bottom:1px solid var(--line);padding:0 0 12px;display:flex;align-items:center;gap:14px;}
  .news-time-col .news-cat{margin-top:0;}
  .news-arrow{display:none;}
  .download{padding:32px 22px;border-radius:var(--radius-m);}
  .download h2{font-size:1.5rem;}
  .dl-meta{grid-template-columns:1fr;}
  .dl-buttons .btn{width:100%;}
  .cta-band{padding:68px 0;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-brand p{max-width:none;}
  .mega-inner{grid-template-columns:1fr;padding:22px;}
  .faq-q{padding:18px 20px;font-size:.94rem;}
  .faq-a-inner{padding:0 20px 20px;}
}
@media screen and (max-width:520px){
  .container{padding:0 18px;}
  .brand-text{font-size:1rem;}
  .hero-cta .btn{width:100%;}
  .trust-row{gap:10px 16px;}
  .shot-card{flex:0 0 92%;}
  .news-side h2{font-size:1.5rem;}
}

/* roulang page: article */
:root{
  --bg:#070C16;
  --bg-2:#0A1222;
  --bg-3:#050A12;
  --panel:rgba(255,255,255,.06);
  --panel-2:rgba(255,255,255,.075);
  --line:rgba(59,232,255,.16);
  --line-soft:rgba(255,255,255,.08);
  --cyan:#3BE8FF;
  --cyan-deep:#19B9D8;
  --amber:#FFB454;
  --violet:#7C8CFF;
  --text:#C9D4E5;
  --muted:#8FA1B8;
  --faint:#6C7C93;
  --radius-s:10px;
  --radius:16px;
  --radius-l:22px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --shadow-soft:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(59,232,255,.5), 0 0 28px rgba(59,232,255,.35);
  --container:1240px;
  --nav-h:80px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 520px at 12% -8%, rgba(59,232,255,.10), transparent 62%),
    radial-gradient(760px 480px at 92% 4%, rgba(124,140,255,.10), transparent 60%),
    radial-gradient(rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:auto, auto, 22px 22px;
  background-attachment:fixed;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan);text-decoration:none;transition:color .18s ease}
a:hover{color:#8FF0FF}
ul,ol{margin:0}
button{font-family:inherit}
h1,h2,h3,h4{color:#fff;margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0 0 1rem}
::selection{background:rgba(59,232,255,.28);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
:focus-visible{outline:3px solid rgba(59,232,255,.75);outline-offset:2px;border-radius:6px}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:70;background:rgba(7,12,22,.86);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--line-soft)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:var(--nav-h)}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#3BE8FF,#7C8CFF);color:#04121A;font-size:1rem;box-shadow:0 0 20px rgba(59,232,255,.35)}
.brand-text{font-weight:800;font-size:1.15rem;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand-text span{color:var(--cyan);margin-left:2px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-item{position:relative;display:inline-flex;align-items:center;padding:10px 14px;border-radius:var(--radius-s);color:var(--muted);font-weight:600;font-size:.94rem;text-decoration:none;transition:color .18s ease,background .18s ease}
.nav-item:hover{color:#fff;background:rgba(59,232,255,.08)}
.nav-item.is-active{color:var(--cyan)}
.nav-item.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:var(--cyan);box-shadow:0 0 12px rgba(59,232,255,.8)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.mega-toggle{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:10px 16px;border-radius:var(--radius-s);background:rgba(255,255,255,.05);border:1px solid var(--line-soft);color:var(--text);font-size:.9rem;font-weight:600;cursor:pointer;transition:border-color .18s ease,color .18s ease,background .18s ease}
.mega-toggle:hover{border-color:var(--line);color:var(--cyan);background:rgba(59,232,255,.08)}
.mega-toggle[aria-expanded="true"]{color:var(--cyan);border-color:var(--line)}
.mega-toggle[aria-expanded="true"] i{transform:rotate(180deg)}
.mega-toggle i{transition:transform .2s ease}
.menu-toggle{display:none;width:44px;height:44px;border-radius:var(--radius-s);background:rgba(255,255,255,.05);border:1px solid var(--line-soft);color:#fff;font-size:1.05rem;cursor:pointer;place-items:center}
.mega-panel{position:absolute;left:0;right:0;top:100%;background:rgba(10,18,34,.95);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-top:1px solid var(--line);border-bottom:1px solid var(--line);box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-inner{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;padding:28px 0 34px}
.mega-col h3{font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;font-weight:700}
.mega-col ul{list-style:none;padding:0;display:grid;gap:8px}
.mega-col a{display:flex;align-items:center;gap:8px;color:var(--text);font-size:.92rem;padding:6px 0;transition:color .18s ease,transform .18s ease}
.mega-col a i{color:var(--cyan);font-size:.75rem;opacity:.8}
.mega-col a:hover{color:var(--cyan);transform:translateX(3px)}
.mega-card{padding:20px;border-radius:var(--radius);background:var(--panel-2);border:1px solid var(--line);box-shadow:var(--shadow-soft)}
.mega-card strong{display:block;color:#fff;font-size:1rem;margin:12px 0 8px}
.mega-card p{color:var(--muted);font-size:.86rem;line-height:1.75;margin:0 0 16px}

/* ===== Buttons & badges ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:13px 24px;border-radius:12px;font-weight:700;font-size:.95rem;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease}
.btn-primary{background:linear-gradient(135deg,#3BE8FF,#19B9D8);color:#04121A;box-shadow:var(--glow)}
.btn-primary:hover{color:#04121A;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(59,232,255,.6),0 0 38px rgba(59,232,255,.5)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{background:rgba(59,232,255,.08);border-color:rgba(59,232,255,.5);color:var(--cyan);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:9px 16px;font-size:.86rem;border-radius:var(--radius-s)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:.76rem;font-weight:700;border:1px solid transparent;letter-spacing:.01em}
.badge--cyan{color:var(--cyan);background:rgba(59,232,255,.1);border-color:rgba(59,232,255,.35)}
.badge--amber{color:var(--amber);background:rgba(255,180,84,.1);border-color:rgba(255,180,84,.35)}
.badge--violet{color:var(--violet);background:rgba(124,140,255,.12);border-color:rgba(124,140,255,.35)}

/* ===== Breadcrumbs & article head ===== */
.crumbs{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:24px 0 0;font-size:.85rem;color:var(--muted)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs i{font-size:.6rem;color:#4C5A70}
.crumbs .is-current{color:var(--cyan);font-weight:600}
.article-hero{position:relative;padding:26px 0 52px;border-bottom:1px solid var(--line-soft);background-image:linear-gradient(180deg,rgba(7,12,22,.72),rgba(7,12,22,.96)),url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center}
.article-hero h1{font-size:clamp(1.85rem,3.6vw,2.9rem);font-weight:800;margin:16px 0 0;max-width:960px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;color:var(--muted);font-size:.86rem}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--cyan);font-size:.8rem}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}

/* ===== Article layout ===== */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 328px;gap:52px;padding:56px 0 92px;align-items:start}
.article-body{max-width:860px;font-size:1.0625rem;line-height:1.9;color:var(--text);word-break:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.25em}
.article-body h2{font-size:clamp(1.35rem,2.2vw,1.65rem);font-weight:700;margin:2.1em 0 .8em;padding-left:14px;border-left:3px solid var(--cyan)}
.article-body h3{font-size:1.2rem;font-weight:700;margin:1.7em 0 .6em;color:#E7EEF9}
.article-body h4{font-size:1.05rem;font-weight:700;margin:1.4em 0 .5em;color:#E7EEF9}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.3em}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--cyan)}
.article-body blockquote{margin:1.6em 0;padding:18px 24px;border-left:3px solid var(--cyan);border-radius:0 14px 14px 0;background:rgba(59,232,255,.06);color:#DCE6F5;font-size:1.0125rem}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.5em auto;box-shadow:var(--shadow-soft)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:.8125rem;color:var(--muted);text-align:center;margin-top:10px;line-height:1.7}
.article-body pre{background:#060B14;border:1px solid var(--line-soft);padding:18px 20px;border-radius:14px;overflow-x:auto;font-size:.875rem;line-height:1.7;margin:1.5em 0}
.article-body code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;background:rgba(59,232,255,.1);color:#8FF0FF;padding:2px 6px;border-radius:6px;font-size:.875em}
.article-body pre code{background:none;color:#C9D4E5;padding:0}
.article-body a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:.9375rem}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line-soft);text-align:left}
.article-body th{color:#fff;font-weight:700;background:rgba(255,255,255,.04)}
.article-body hr{border:none;border-top:1px solid var(--line-soft);margin:2.4em 0}
.article-empty{padding:56px 28px;border-radius:var(--radius-l);background:var(--panel);border:1px solid var(--line-soft);text-align:center}
.article-empty i{font-size:2.2rem;color:var(--cyan);opacity:.85}
.article-empty h2{margin:18px 0 10px;font-size:1.4rem}
.article-empty p{color:var(--muted);max-width:520px;margin:0 auto 22px}

/* ===== Sidebar ===== */
.side-stack{display:grid;gap:22px;position:sticky;top:calc(var(--nav-h) + 26px)}
.glass-card{background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-soft)}
.card-title{display:flex;align-items:center;gap:9px;color:#fff;font-size:.98rem;font-weight:700;margin-bottom:16px}
.card-title i{color:var(--cyan)}
.toc-list{list-style:none;padding:0;display:grid;gap:4px;max-height:330px;overflow-y:auto}
.toc-list li{margin:0}
.toc-list a{display:block;padding:7px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;color:var(--muted);font-size:.86rem;line-height:1.55;transition:color .18s ease,background .18s ease,border-color .18s ease}
.toc-list a:hover{color:#fff;background:rgba(59,232,255,.07)}
.toc-list a.is-active{color:var(--cyan);border-left-color:var(--cyan);background:rgba(59,232,255,.09)}
.toc-list .toc-h3 a{padding-left:24px;font-size:.82rem}
.toc-empty{color:var(--muted);font-size:.86rem;padding:6px 0}
.hot-list{list-style:none;padding:0;display:grid;gap:13px}
.hot-list li{margin:0}
.hot-list a{display:flex;gap:10px;color:var(--text);font-size:.89rem;line-height:1.6;transition:color .18s ease}
.hot-list a:hover{color:var(--cyan)}
.hot-index{color:var(--amber);font-weight:800;font-size:.85rem;font-variant-numeric:tabular-nums}
.side-cta{background-image:linear-gradient(180deg,rgba(10,18,34,.82),rgba(10,18,34,.95)),url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center}
.side-cta strong{display:block;color:#fff;font-size:1.02rem;margin-bottom:8px}
.side-cta p{color:var(--muted);font-size:.86rem;margin:0 0 16px}
.side-cta .btn{width:100%}
.side-list{list-style:none;padding:0;display:grid;gap:10px}
.side-list a{display:flex;align-items:center;gap:9px;color:var(--text);font-size:.9rem;padding:9px 12px;border-radius:var(--radius-s);background:rgba(255,255,255,.035);border:1px solid var(--line-soft);transition:border-color .18s ease,color .18s ease,transform .18s ease}
.side-list a i{color:var(--cyan);font-size:.78rem}
.side-list a:hover{color:var(--cyan);border-color:var(--line);transform:translateX(3px)}

/* ===== Sections ===== */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:42px}
.section-eyebrow{display:inline-block;color:var(--cyan);font-size:.76rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;margin-bottom:12px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:700;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:.98rem;margin:0}

.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.rel-card{display:flex;flex-direction:column;border-radius:var(--radius);overflow:hidden;background:var(--panel);border:1px solid var(--line-soft);text-decoration:none;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(59,232,255,.42);box-shadow:var(--shadow-soft)}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#0A1222,#131F35)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.06)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:1rem;font-weight:700;color:#fff;transition:color .18s ease}
.rel-card:hover .rel-body h3{color:var(--cyan)}
.rel-body p{color:var(--muted);font-size:.86rem;margin:0;flex:1}
.rel-meta{display:flex;align-items:center;gap:12px;color:var(--faint);font-size:.78rem}

.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.pager-item{display:flex;flex-direction:column;gap:8px;padding:22px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line-soft);text-decoration:none;transition:border-color .2s ease,transform .2s ease}
.pager-item:hover{border-color:rgba(59,232,255,.42);transform:translateY(-3px)}
.pager-item span{color:var(--muted);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase}
.pager-item strong{color:#fff;font-size:1rem;font-weight:700}

.cta-band{position:relative;border-radius:24px;padding:64px 44px;text-align:center;overflow:hidden;border:1px solid var(--line);background-image:linear-gradient(140deg,rgba(7,12,22,.86),rgba(10,18,34,.94)),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;box-shadow:var(--shadow)}
.cta-band h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:14px}
.cta-band p{color:var(--muted);max-width:640px;margin:0 auto;font-size:.98rem}
.dl-row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:30px}
.dl-note{display:flex;flex-wrap:wrap;justify-content:center;gap:22px;margin-top:26px;color:var(--faint);font-size:.82rem}
.dl-note span{display:inline-flex;align-items:center;gap:8px}
.dl-note i{color:var(--cyan)}

.faq .accordion{background:transparent;border:none;margin:0}
.faq .accordion-item{background:var(--panel);border:1px solid var(--line-soft);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease}
.faq .accordion-item:hover{border-color:var(--line)}
.faq .accordion-title{background:transparent;border:none;border-left:3px solid transparent;color:#fff;font-size:1rem;font-weight:600;padding:18px 22px;margin:0;transition:background .18s ease,color .18s ease,border-color .18s ease}
.faq .accordion-title::before{color:var(--cyan);margin-right:10px;font-size:1rem}
.faq .accordion-title:hover{background:rgba(59,232,255,.06)}
.faq .is-active>.accordion-title{border-left-color:var(--cyan);color:var(--cyan);background:rgba(59,232,255,.06)}
.faq .accordion-content{background:transparent;border:none;color:var(--muted);padding:0 22px 20px 25px;font-size:.94rem;line-height:1.85}
.faq .accordion-content p:last-child{margin-bottom:0}

/* ===== Footer ===== */
.site-footer{margin-top:60px;padding:66px 0 26px;background:var(--bg-3);border-top:1px solid var(--line-soft)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:38px}
.footer-brand p{color:var(--muted);font-size:.9rem;line-height:1.85;margin:16px 0 0;max-width:360px}
.footer-col h4{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;display:grid;gap:10px}
.footer-col a{color:var(--muted);font-size:.9rem}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{display:flex;gap:10px;color:var(--muted);font-size:.88rem;line-height:1.7}
.footer-contact i{color:var(--cyan);margin-top:5px;font-size:.82rem}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin-top:48px;padding-top:22px;border-top:1px solid var(--line-soft);color:var(--faint);font-size:.83rem}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;padding:44px 0 72px}
  .side-stack{position:static}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mega-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .section{padding:70px 0}
}
@media (max-width:900px){
  .main-nav{display:none}
  .main-nav.is-open{display:flex;flex-direction:column;align-items:stretch;position:absolute;left:0;right:0;top:100%;gap:4px;padding:16px 20px 22px;background:rgba(10,18,34,.97);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .main-nav.is-open .nav-item{padding:13px 14px;font-size:.96rem}
  .main-nav.is-open .nav-item.is-active::after{left:14px;right:auto;width:26px;bottom:8px}
  .menu-toggle{display:grid;margin-left:auto}
  .nav-actions .mega-toggle{display:none}
  .nav-actions .btn{display:none}
  .mega-inner{grid-template-columns:1fr;gap:22px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .article-layout{padding:34px 0 60px;gap:32px}
  .article-hero{padding:20px 0 38px}
  .article-body{font-size:1rem;line-height:1.85}
  .section{padding:52px 0}
  .rel-grid,.pager{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:44px 22px;border-radius:20px}
  .dl-row .btn{width:100%}
  .glass-card{padding:18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category1 */
:root{
  --bg:#070C16;
  --bg-2:#0A1222;
  --bg-3:#0D1728;
  --primary:#3BE8FF;
  --primary-dim:rgba(59,232,255,.12);
  --amber:#FFB454;
  --violet:#7C8CFF;
  --text:#C9D4E5;
  --text-strong:#EAF2FF;
  --muted:#8FA1B8;
  --line:rgba(255,255,255,.08);
  --line-cyan:rgba(59,232,255,.16);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.045);
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:22px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --shadow-soft:0 10px 32px rgba(0,0,0,.32);
  --glow:0 0 0 1px rgba(59,232,255,.5),0 0 28px rgba(59,232,255,.35);
  --container:1220px;
  --t:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(900px 520px at 82% -8%,rgba(59,232,255,.14),transparent 62%),
    radial-gradient(760px 460px at 4% 12%,rgba(124,140,255,.12),transparent 60%),
    radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:auto,auto,22px 22px;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--text);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t);}
a:hover{color:var(--primary);}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--text-strong);font-weight:700;letter-spacing:-.01em;line-height:1.25;}
h1{font-size:clamp(2.1rem,4.4vw,3.35rem);font-weight:800;line-height:1.15;}
h2{font-size:clamp(1.5rem,2.4vw,2rem);}
h3{font-size:1.22rem;}
p{margin:0 0 1.1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(59,232,255,.7);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--primary);margin-bottom:14px;font-weight:600;
}
.section-head p{color:var(--muted);font-size:1rem;margin:0;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 24px;
  border-radius:12px;border:1px solid transparent;
  font-size:.95rem;font-weight:600;cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn-sm{min-height:42px;padding:0 18px;font-size:.875rem;border-radius:10px;}
.btn-primary{
  background:linear-gradient(180deg,rgba(59,232,255,.22),rgba(59,232,255,.08));
  color:#EAFDFF;
  border-color:rgba(59,232,255,.55);
  box-shadow:var(--glow);
}
.btn-primary:hover{
  transform:translateY(-2px);
  color:#fff;
  box-shadow:0 0 0 1px rgba(59,232,255,.75),0 0 36px rgba(59,232,255,.5);
}
.btn-amber{
  background:linear-gradient(180deg,rgba(255,180,84,.26),rgba(255,180,84,.1));
  color:#FFE7C6;border-color:rgba(255,180,84,.55);
  box-shadow:0 0 0 1px rgba(255,180,84,.4),0 0 26px rgba(255,180,84,.28);
}
.btn-amber:hover{transform:translateY(-2px);color:#fff3df;box-shadow:0 0 0 1px rgba(255,180,84,.7),0 0 34px rgba(255,180,84,.42);}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line-cyan);
  color:var(--text-strong);
}
.btn-ghost:hover{background:rgba(59,232,255,.08);border-color:rgba(59,232,255,.5);color:#EAFDFF;transform:translateY(-2px);}
.btn:active{transform:translateY(0);}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:.76rem;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(59,232,255,.28);
  background:rgba(59,232,255,.1);color:#BFF3FF;
  white-space:nowrap;
}
.badge--amber{border-color:rgba(255,180,84,.32);background:rgba(255,180,84,.12);color:#FFD9A6;}
.badge--violet{border-color:rgba(124,140,255,.32);background:rgba(124,140,255,.12);color:#C9D2FF;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,22,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;align-items:center;
  gap:22px;min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--text-strong);font-weight:800;letter-spacing:-.01em;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(59,232,255,.28),rgba(124,140,255,.16));
  border:1px solid rgba(59,232,255,.35);
  color:var(--primary);font-size:1rem;
  box-shadow:0 0 18px rgba(59,232,255,.28);
}
.brand-text{font-size:1.12rem;line-height:1;}
.brand-text span{color:var(--primary);font-weight:800;margin-left:2px;}
.brand:hover{color:var(--text-strong);}

.main-nav{display:flex;align-items:center;gap:6px;margin-left:14px;flex:1;}
.nav-item{
  position:relative;
  padding:10px 14px;border-radius:10px;
  font-size:.92rem;font-weight:600;color:var(--muted);
}
.nav-item:hover{color:var(--text-strong);background:rgba(255,255,255,.04);}
.nav-item.is-active{color:var(--primary);}
.nav-item.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
  box-shadow:0 0 12px rgba(59,232,255,.8);
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:8px;
  min-height:42px;padding:0 16px;border-radius:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-cyan);
  color:var(--text);font-size:.875rem;font-weight:600;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t);
}
.mega-toggle:hover{background:rgba(59,232,255,.1);color:#EAFDFF;border-color:rgba(59,232,255,.45);}
.mega-toggle[aria-expanded="true"]{background:rgba(59,232,255,.12);color:#EAFDFF;border-color:rgba(59,232,255,.5);}
.mega-toggle[aria-expanded="true"] i{transform:rotate(180deg);}
.mega-toggle i{transition:transform var(--t);}
.menu-toggle{
  display:none;width:46px;height:46px;border-radius:11px;
  background:rgba(255,255,255,.04);border:1px solid var(--line-cyan);
  color:var(--text-strong);font-size:1.05rem;cursor:pointer;
}

.mega-panel{
  position:absolute;left:0;right:0;top:100%;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
  pointer-events:none;
}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;}
.mega-inner{
  display:grid;grid-template-columns:1fr 1fr 1.4fr;gap:28px;
  margin-top:10px;padding:28px;
  border-radius:var(--radius-l);
  background:rgba(10,18,34,.94);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow);
}
.mega-col h3{font-size:.86rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:16px;}
.mega-col ul li + li{margin-top:4px;}
.mega-col ul a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:9px;font-size:.9rem;color:var(--text);
}
.mega-col ul a i{color:var(--primary);font-size:.72rem;opacity:.75;}
.mega-col ul a:hover{background:rgba(59,232,255,.08);color:#EAFDFF;}
.mega-card{
  border-radius:var(--radius-m);
  padding:22px;
  background:linear-gradient(160deg,rgba(59,232,255,.09),rgba(124,140,255,.06));
  border:1px solid var(--line-cyan);
}
.mega-card strong{display:block;color:var(--text-strong);font-size:1.02rem;margin:14px 0 8px;}
.mega-card p{color:var(--muted);font-size:.87rem;margin:0 0 16px;line-height:1.7;}
.mega-card .btn{width:100%;}
@media (hover:hover){
  .site-header:hover .mega-panel,
  .mega-panel:hover{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;}
}

/* ---------- breadcrumb ---------- */
.crumb-bar{
  border-bottom:1px solid var(--line);
  background:rgba(10,18,34,.5);
}
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:14px 0;font-size:.83rem;color:var(--muted);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb i{font-size:.62rem;opacity:.6;}
.crumb .current{color:var(--primary);font-weight:600;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:88px 0 76px;
  background-image:linear-gradient(100deg,rgba(7,12,22,.96) 12%,rgba(7,12,22,.78) 52%,rgba(7,12,22,.55) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.6;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:52px;align-items:center;
}
.hero h1{margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--primary);text-shadow:0 0 26px rgba(59,232,255,.45);}
.hero-sub{
  font-size:1.03rem;color:var(--text);max-width:620px;margin-bottom:30px;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 22px;}
.trust-row span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.84rem;color:var(--muted);
}
.trust-row i{color:var(--primary);font-size:.8rem;}
.hero-visual{position:relative;}
.hero-shot{
  border-radius:var(--radius-l);
  overflow:hidden;
  border:1px solid var(--line-cyan);
  background:rgba(255,255,255,.05);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.hero-shot img{width:100%;height:340px;object-fit:cover;}
.hero-shot-bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 18px;border-top:1px solid var(--line);
  font-size:.82rem;color:var(--muted);
}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;
  padding:16px 20px;border-radius:var(--radius-m);
  background:rgba(10,18,34,.92);
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow-soft);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.hero-float strong{display:block;color:var(--primary);font-size:1.3rem;font-weight:800;line-height:1.2;}
.hero-float span{font-size:.78rem;color:var(--muted);}

/* ---------- layout: toc + content ---------- */
.page-grid{
  display:grid;
  grid-template-columns:262px minmax(0,1fr);
  gap:52px;
  align-items:start;
}
.toc{
  position:sticky;top:104px;
  border-radius:var(--radius-m);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:22px 20px;
  box-shadow:var(--shadow-soft);
}
.toc h2{
  font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);margin-bottom:16px;font-weight:700;
}
.toc ol{margin:0;padding:0;list-style:none;counter-reset:toc;}
.toc li + li{margin-top:3px;}
.toc a{
  display:block;
  padding:9px 12px;
  border-left:2px solid transparent;
  border-radius:0 9px 9px 0;
  font-size:.875rem;color:var(--muted);
  transition:all var(--t);
}
.toc a:hover{color:var(--text-strong);background:rgba(255,255,255,.04);}
.toc a.is-current{
  color:var(--primary);
  border-left-color:var(--primary);
  background:rgba(59,232,255,.08);
  box-shadow:inset 0 0 18px rgba(59,232,255,.08);
}
.toc-cta{margin-top:20px;padding-top:20px;border-top:1px solid var(--line);}
.toc-cta .btn{width:100%;}

.content-flow > section + section{margin-top:76px;}
.content-flow h2{scroll-margin-top:110px;}
.content-flow h3{scroll-margin-top:110px;}

.card{
  border-radius:var(--radius-m);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:26px;
  box-shadow:var(--shadow-soft);
  transition:border-color var(--t),transform var(--t),background var(--t);
}
.card:hover{border-color:var(--line-cyan);background:rgba(255,255,255,.075);}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(59,232,255,.1);border:1px solid rgba(59,232,255,.28);
  color:var(--primary);font-size:1rem;margin-bottom:16px;
}
.card-icon--amber{background:rgba(255,180,84,.1);border-color:rgba(255,180,84,.3);color:var(--amber);}
.card-icon--violet{background:rgba(124,140,255,.12);border-color:rgba(124,140,255,.3);color:var(--violet);}
.card h3{margin-bottom:10px;}
.card p{color:var(--muted);font-size:.92rem;margin:0;line-height:1.78;}

.lead{font-size:1.02rem;color:var(--text);line-height:1.9;}

.mark-list li{
  position:relative;
  padding:12px 0 12px 30px;
  border-bottom:1px dashed rgba(255,255,255,.07);
  font-size:.94rem;color:var(--text);
}
.mark-list li:last-child{border-bottom:0;}
.mark-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:13px;
  font-size:.78rem;color:var(--primary);
}
.mark-list li strong{color:var(--text-strong);}

.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}

.media-block{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:36px;align-items:center;
  border-radius:var(--radius-l);
  padding:30px;
  background:linear-gradient(150deg,rgba(59,232,255,.07),rgba(124,140,255,.05));
  border:1px solid var(--line);
}
.media-block img{border-radius:var(--radius-m);height:280px;width:100%;object-fit:cover;border:1px solid var(--line-cyan);}
.media-block h3{font-size:1.3rem;}
.media-block p{color:var(--muted);font-size:.94rem;}
.mini-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.spec-card{
  border-radius:var(--radius-m);
  background:var(--glass-2);
  border:1px solid var(--line);
  padding:22px;
}
.spec-card header{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.spec-card header i{color:var(--primary);font-size:1.05rem;}
.spec-card header strong{color:var(--text-strong);font-size:1rem;}
.spec-row{
  display:flex;justify-content:space-between;gap:14px;
  padding:10px 0;border-bottom:1px solid rgba(255,255,255,.06);
  font-size:.86rem;
}
.spec-row:last-child{border-bottom:0;}
.spec-row span{color:var(--muted);}
.spec-row b{color:var(--amber);font-weight:700;text-align:right;}

.steps{counter-reset:step;display:grid;gap:0;}
.step{
  position:relative;
  padding:0 0 26px 54px;
  counter-increment:step;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:counter(step);
  position:absolute;left:0;top:2px;
  width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;
  font-size:.85rem;font-weight:800;color:#04121A;
  background:var(--primary);
  box-shadow:0 0 20px rgba(59,232,255,.5);
}
.step::after{
  content:"";position:absolute;left:17.5px;top:42px;bottom:6px;width:1px;
  background:linear-gradient(180deg,rgba(59,232,255,.4),rgba(59,232,255,.04));
}
.step:last-child::after{display:none;}
.step h4{margin:0 0 6px;font-size:1.02rem;color:var(--text-strong);}
.step p{margin:0;font-size:.9rem;color:var(--muted);}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  border-radius:var(--radius-m);
  background:var(--glass-2);
  border:1px solid var(--line);
  border-left:2px solid transparent;
  overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.faq-item.is-open{border-left-color:var(--primary);background:rgba(59,232,255,.06);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:none;border:0;cursor:pointer;
  text-align:left;color:var(--text-strong);font-size:.98rem;font-weight:700;
}
.faq-q:hover{color:var(--primary);}
.faq-q i{
  flex:none;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;
  background:rgba(59,232,255,.1);border:1px solid rgba(59,232,255,.24);
  color:var(--primary);font-size:.7rem;transition:transform var(--t);
}
.faq-item.is-open .faq-q i{transform:rotate(135deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease,padding .3s ease;
  padding:0 22px;
}
.faq-item.is-open .faq-a{padding:0 22px 20px;max-height:420px;}
.faq-a p{margin:0;color:var(--muted);font-size:.91rem;line-height:1.82;}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-l);
  padding:56px 48px;
  background-image:linear-gradient(120deg,rgba(7,12,22,.94),rgba(10,18,34,.86)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:34px;align-items:center;}
.cta-inner h2{margin-bottom:10px;}
.cta-inner p{color:var(--muted);margin:0;font-size:.95rem;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px;}
.qr-box{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:18px;border-radius:var(--radius-m);
  background:rgba(255,255,255,.05);border:1px solid var(--line-cyan);
}
.qr-box img{width:112px;height:112px;border-radius:10px;object-fit:cover;}
.qr-box span{font-size:.76rem;color:var(--muted);}

/* ---------- download strip ---------- */
.dl-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
}
.dl-btn{
  display:flex;flex-direction:column;gap:6px;
  padding:18px 20px;border-radius:var(--radius-m);
  background:var(--glass-2);border:1px solid var(--line);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.dl-btn:hover{transform:translateY(-2px);border-color:rgba(59,232,255,.45);box-shadow:0 0 26px rgba(59,232,255,.18);}
.dl-btn i{color:var(--primary);font-size:1.05rem;}
.dl-btn strong{color:var(--text-strong);font-size:.95rem;}
.dl-btn small{color:var(--muted);font-size:.76rem;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:0;
  padding:74px 0 26px;
  background:linear-gradient(180deg,rgba(10,18,34,.7),rgba(7,12,22,.98));
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid var(--line);
}
.footer-brand p{color:var(--muted);font-size:.88rem;margin:18px 0 0;max-width:340px;line-height:1.8;}
.footer-col h4{font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:18px;}
.footer-col ul li + li{margin-top:10px;}
.footer-col ul a{font-size:.88rem;color:var(--text);}
.footer-col ul a:hover{color:var(--primary);}
.footer-contact li{display:flex;gap:10px;font-size:.86rem;color:var(--muted);line-height:1.7;}
.footer-contact li + li{margin-top:12px;}
.footer-contact i{color:var(--primary);margin-top:5px;flex:none;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:.8rem;color:var(--muted);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:74px 0;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-shot img{height:300px;}
  .hero-float{left:auto;right:14px;bottom:-18px;}
  .page-grid{grid-template-columns:1fr;gap:34px;}
  .toc{position:relative;top:0;}
  .toc ol{display:flex;flex-wrap:wrap;gap:8px;}
  .toc li + li{margin-top:0;}
  .toc a{border:1px solid var(--line);border-radius:999px;padding:8px 14px;border-left:1px solid var(--line);}
  .toc a.is-current{border-color:rgba(59,232,255,.5);border-left-color:rgba(59,232,255,.5);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .dl-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:1fr;}
  .mega-inner{grid-template-columns:1fr 1fr;gap:22px;}
}
@media (max-width:880px){
  .main-nav{
    display:none;
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:2px;
    margin-left:0;padding:14px 20px 20px;
    background:rgba(10,18,34,.97);
    border-bottom:1px solid var(--line-cyan);
    box-shadow:var(--shadow);
  }
  .main-nav.is-open{display:flex;}
  .nav-item{padding:14px 12px;font-size:.95rem;}
  .nav-item.is-active::after{left:12px;right:auto;width:22px;}
  .menu-toggle{display:grid;place-items:center;}
  .nav-actions .mega-toggle{display:none;}
  .nav-wrap{justify-content:space-between;gap:12px;}
  .nav-actions{margin-left:auto;}
  .mega-panel{position:relative;top:0;}
  .mega-panel.is-open .mega-inner{margin-top:0;border-radius:0;border-left:0;border-right:0;}
}
@media (max-width:640px){
  .container{padding:0 20px;}
  .section{padding:58px 0;}
  .hero{padding:62px 0 66px;}
  .hero h1{font-size:1.9rem;}
  .hero-sub{font-size:.96rem;}
  .hero-actions .btn{width:100%;}
  .grid-2,.grid-3,.spec-grid,.media-block{grid-template-columns:1fr;}
  .media-block{padding:22px;gap:22px;}
  .media-block img{height:210px;}
  .cta-band{padding:36px 22px;}
  .cta-actions .btn{width:100%;}
  .dl-strip{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .mega-inner{grid-template-columns:1fr;}
  .hero-shot img{height:230px;}
  .hero-float{position:relative;right:auto;left:auto;bottom:auto;margin-top:14px;}
  .content-flow > section + section{margin-top:56px;}
  .card{padding:20px;}
}

/* roulang page: category2 */
:root{
  --bg:#070C16;
  --bg-2:#0A1222;
  --bg-3:#0E1729;
  --cyan:#3BE8FF;
  --amber:#FFB454;
  --violet:#7C8CFF;
  --text:#C9D4E5;
  --muted:#8FA1B8;
  --line:rgba(255,255,255,.08);
  --line-cyan:rgba(59,232,255,.16);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.075);
  --radius-s:10px;
  --radius:16px;
  --radius-l:22px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --shadow-soft:0 10px 30px rgba(0,0,0,.32);
  --container:1240px;
  --t:.22s ease;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:130px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(circle at 16% 6%, rgba(59,232,255,.10), transparent 46%),
    radial-gradient(circle at 84% 2%, rgba(124,140,255,.10), transparent 42%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:26px 26px;
}
a{color:var(--text);text-decoration:none;transition:color var(--t), border-color var(--t), background-color var(--t);}
a:hover{color:var(--cyan);}
img{max-width:100%;display:block;border-radius:var(--radius);object-fit:cover;}
h1,h2,h3,h4,h5,h6{color:#EEF4FF;margin:0 0 .6em;line-height:1.2;letter-spacing:-.01em;font-weight:700;}
h1{font-size:clamp(2.1rem,4.6vw,3.5rem);font-weight:800;line-height:1.15;}
h2{font-size:clamp(1.6rem,2.6vw,2rem);font-weight:700;}
h3{font-size:1.2rem;font-weight:700;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(59,232,255,.75);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;position:relative;z-index:1;}
.grid-x > .cell{min-width:0;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(7,12,22,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:26px;
  min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg, rgba(59,232,255,.22), rgba(124,140,255,.22));
  border:1px solid var(--line-cyan);
  color:var(--cyan);
  font-size:16px;
  box-shadow:0 0 22px rgba(59,232,255,.22);
}
.brand-text{font-size:1.06rem;font-weight:800;color:#F2F7FF;letter-spacing:.02em;}
.brand-text span{color:var(--cyan);margin-left:2px;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px;}
.nav-item{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  border-radius:10px;
  font-size:.95rem;
  font-weight:600;
  color:var(--muted);
}
.nav-item::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:6px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(59,232,255,0));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
}
.nav-item:hover{color:#E8F3FF;background:rgba(255,255,255,.04);}
.nav-item:hover::after{transform:scaleX(1);}
.nav-item.is-active{color:var(--cyan);}
.nav-item.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 22px;
  border-radius:12px;
  border:1px solid transparent;
  font-size:.95rem;
  font-weight:700;
  cursor:pointer;
  transition:transform var(--t), box-shadow var(--t), background-color var(--t), color var(--t), border-color var(--t);
}
.btn-sm{min-height:42px;padding:0 16px;font-size:.88rem;border-radius:10px;}
.btn-primary{
  background:linear-gradient(120deg, rgba(59,232,255,.95), rgba(59,232,255,.72));
  color:#04121A;
  box-shadow:0 0 0 1px rgba(59,232,255,.5), 0 0 28px rgba(59,232,255,.35);
}
.btn-primary:hover{
  color:#04121A;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(59,232,255,.7), 0 0 40px rgba(59,232,255,.5);
}
.btn-amber{
  background:linear-gradient(120deg, rgba(255,180,84,.96), rgba(255,180,84,.74));
  color:#1B1103;
  box-shadow:0 0 0 1px rgba(255,180,84,.45), 0 0 26px rgba(255,180,84,.3);
}
.btn-amber:hover{color:#1B1103;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,180,84,.7), 0 0 38px rgba(255,180,84,.45);}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line-cyan);
  color:#D8E6F7;
}
.btn-ghost:hover{
  color:var(--cyan);
  background:rgba(59,232,255,.08);
  border-color:rgba(59,232,255,.45);
  transform:translateY(-2px);
}
.btn:active{transform:translateY(0);}

.mega-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:42px;
  padding:0 16px;
  border-radius:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text);
  font-size:.88rem;
  font-weight:600;
  cursor:pointer;
  transition:all var(--t);
}
.mega-toggle:hover{color:var(--cyan);border-color:var(--line-cyan);background:rgba(59,232,255,.07);}
.mega-toggle[aria-expanded="true"]{color:var(--cyan);border-color:var(--line-cyan);}
.mega-toggle[aria-expanded="true"] .fa-chevron-down{transform:rotate(180deg);}
.mega-toggle .fa-chevron-down{transition:transform var(--t);}

.mega-panel{
  position:absolute;
  left:0;right:0;top:100%;
  background:rgba(8,14,26,.96);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line-cyan);
  box-shadow:var(--shadow);
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .2s ease, transform .2s ease, visibility .2s;
  max-height:calc(100vh - 90px);
  overflow-y:auto;
}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mega-inner{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:34px;
  padding:32px 0 36px;
}
.mega-col h3{
  font-size:.82rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:16px;
  font-weight:700;
}
.mega-col ul{display:flex;flex-direction:column;gap:4px;}
.mega-col ul li a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:10px;
  font-size:.92rem;
  color:var(--text);
  border:1px solid transparent;
}
.mega-col ul li a i{color:var(--cyan);font-size:.75rem;opacity:.7;}
.mega-col ul li a:hover{background:rgba(59,232,255,.08);border-color:var(--line-cyan);color:var(--cyan);}
.mega-card{
  padding:22px;
  border-radius:var(--radius);
  background:var(--glass);
  backdrop-filter:blur(14px);
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow-soft);
}
.mega-card strong{display:block;color:#F1F7FF;font-size:1rem;margin:12px 0 8px;}
.mega-card p{font-size:.86rem;color:var(--muted);margin-bottom:16px;line-height:1.7;}
.mega-card .btn{width:100%;}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:999px;
  font-size:.76rem;
  font-weight:700;
  letter-spacing:.02em;
  background:rgba(59,232,255,.12);
  border:1px solid rgba(59,232,255,.35);
  color:var(--cyan);
}
.badge--amber{background:rgba(255,180,84,.12);border-color:rgba(255,180,84,.4);color:var(--amber);}
.badge--violet{background:rgba(124,140,255,.14);border-color:rgba(124,140,255,.4);color:#A9B4FF;}

.menu-toggle{
  display:none;
  width:46px;height:46px;
  align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text);
  font-size:1.05rem;
  cursor:pointer;
  margin-left:auto;
}
.nav-cta-mobile{display:none;}

/* ---------- Hero ---------- */
.hero-c2{
  position:relative;
  padding:120px 0 96px;
  text-align:center;
  background-image:linear-gradient(180deg, rgba(7,12,22,.72), rgba(7,12,22,.94)), url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-c2::after{
  content:"";
  position:absolute;
  left:50%;top:-140px;
  width:760px;height:520px;
  transform:translateX(-50%);
  background:radial-gradient(circle, rgba(59,232,255,.20), transparent 64%);
  pointer-events:none;
}
.hero-c2 .container{max-width:960px;}
.hero-c2__title{margin-bottom:22px;}
.hero-c2__title em{font-style:normal;color:var(--cyan);}
.hero-c2__sub{
  font-size:1.06rem;
  color:#A9BAD2;
  max-width:760px;
  margin:0 auto 32px;
  line-height:1.85;
}
.hero-c2__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:46px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-radius:var(--radius-l);
  background:var(--glass);
  backdrop-filter:blur(14px);
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow);
  overflow:hidden;
  text-align:left;
}
.hero-stats > div{padding:22px 24px;border-right:1px solid var(--line);}
.hero-stats > div:last-child{border-right:0;}
.hero-stats strong{display:block;font-size:1.4rem;color:var(--amber);font-weight:800;letter-spacing:-.02em;}
.hero-stats span{font-size:.83rem;color:var(--muted);}

/* ---------- Tabs ---------- */
.tabs-bar{
  position:sticky;
  top:76px;
  z-index:60;
  background:rgba(7,12,22,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.tabs-scroll{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:14px 0;
  scrollbar-width:none;
}
.tabs-scroll::-webkit-scrollbar{display:none;}
.tab-chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--muted);
  font-size:.9rem;
  font-weight:600;
  white-space:nowrap;
}
.tab-chip:hover{color:var(--cyan);border-color:var(--line-cyan);background:rgba(59,232,255,.07);}
.tab-chip.is-active{
  color:#04121A;
  background:linear-gradient(120deg, rgba(59,232,255,.95), rgba(59,232,255,.7));
  border-color:transparent;
  box-shadow:0 0 22px rgba(59,232,255,.35);
}

/* ---------- Section ---------- */
.section{padding:96px 0;position:relative;}
.section--alt{background:linear-gradient(180deg, rgba(10,18,34,.85), rgba(7,12,22,0));}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--cyan);box-shadow:0 0 12px rgba(59,232,255,.7);}
.section-head--center .eyebrow::before{display:none;}
.section-title{margin-bottom:14px;}
.section-desc{color:var(--muted);font-size:1rem;line-height:1.85;margin:0;}

/* ---------- 横向卡片流 ---------- */
.hscroll-wrap{position:relative;}
.hscroll{
  display:flex;
  gap:22px;
  overflow-x:auto;
  padding:4px 4px 26px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
  scrollbar-color:rgba(59,232,255,.35) transparent;
}
.hscroll::-webkit-scrollbar{height:6px;}
.hscroll::-webkit-scrollbar-thumb{background:rgba(59,232,255,.3);border-radius:99px;}
.pcard{
  flex:0 0 330px;
  scroll-snap-align:start;
  border-radius:var(--radius-l);
  background:var(--glass);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform var(--t), border-color var(--t), box-shadow var(--t);
}
.pcard:hover{transform:translateY(-4px);border-color:var(--line-cyan);box-shadow:0 20px 50px rgba(0,0,0,.5), 0 0 30px rgba(59,232,255,.12);}
.pcard__media{position:relative;height:158px;overflow:hidden;}
.pcard__media img{width:100%;height:100%;border-radius:0;}
.pcard__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(7,12,22,.15), rgba(7,12,22,.75));
}
.pcard__tag{position:absolute;left:14px;top:14px;z-index:2;}
.pcard__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.pcard__body h3{margin:0;font-size:1.08rem;}
.pcard__body p{margin:0;font-size:.88rem;color:var(--muted);line-height:1.75;}
.pcard__meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);}
.pcard__meta span{font-size:.78rem;color:#93A6BF;}

/* ---------- 对比矩阵 ---------- */
.matrix-scroll{overflow-x:auto;border-radius:var(--radius-l);}
.matrix{
  min-width:820px;
  border-radius:var(--radius-l);
  border:1px solid var(--line-cyan);
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  backdrop-filter:blur(14px);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.matrix-row{
  display:grid;
  grid-template-columns:1.15fr repeat(3,1fr);
  border-bottom:1px solid var(--line);
}
.matrix-row:last-child{border-bottom:0;}
.matrix-cell{
  padding:18px 22px;
  font-size:.92rem;
  color:var(--text);
  border-right:1px solid var(--line);
  line-height:1.65;
}
.matrix-cell:last-child{border-right:0;}
.matrix-head{background:rgba(59,232,255,.07);}
.matrix-head .matrix-cell{font-weight:700;color:#EAF6FF;font-size:.9rem;letter-spacing:.02em;}
.matrix-key{color:var(--muted);font-weight:600;background:rgba(255,255,255,.025);}
.matrix .yes{color:var(--cyan);font-weight:600;}
.matrix .mid{color:var(--amber);font-weight:600;}

/* ---------- 步骤条 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:26px;
  position:relative;
}
.step{
  position:relative;
  padding:26px 22px 24px;
  border-radius:var(--radius);
  background:var(--glass);
  backdrop-filter:blur(12px);
  border:1px solid var(--line);
  transition:border-color var(--t), transform var(--t);
}
.step:hover{border-color:var(--line-cyan);transform:translateY(-3px);}
.step:not(:last-child)::after{
  content:"";
  position:absolute;
  top:44px;right:-26px;
  width:26px;height:1px;
  background:linear-gradient(90deg, rgba(59,232,255,.65), rgba(59,232,255,.1));
}
.step-num{
  display:inline-flex;
  align-items:center;justify-content:center;
  width:40px;height:40px;
  border-radius:50%;
  font-weight:800;
  font-size:.95rem;
  color:#04121A;
  background:linear-gradient(140deg, rgba(59,232,255,1), rgba(59,232,255,.7));
  box-shadow:0 0 0 4px rgba(59,232,255,.14), 0 0 22px rgba(59,232,255,.45);
  margin-bottom:16px;
}
.step h3{font-size:1.02rem;margin-bottom:8px;}
.step p{margin:0;font-size:.87rem;color:var(--muted);line-height:1.75;}

/* ---------- 规格卡 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.spec-card{
  padding:26px;
  border-radius:var(--radius-l);
  background:var(--glass);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  transition:border-color var(--t), transform var(--t);
}
.spec-card:hover{border-color:var(--line-cyan);transform:translateY(-3px);}
.spec-card__top{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.spec-card__top i{color:var(--cyan);font-size:1.2rem;}
.spec-card__top h3{margin:0;font-size:1.05rem;}
.spec-line{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.08);font-size:.88rem;}
.spec-line:last-child{border-bottom:0;padding-bottom:0;}
.spec-line span:first-child{color:var(--muted);flex:0 0 auto;}
.spec-line span:last-child{color:#E4EEFB;text-align:right;font-weight:600;}
.spec-line span em{font-style:normal;color:var(--amber);font-weight:700;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
ul.accordion{
  background:transparent;
  border:0;
  margin:0;
  padding:0;
}
ul.accordion > li.accordion-item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--glass);
  backdrop-filter:blur(12px);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color var(--t), box-shadow var(--t);
}
ul.accordion > li.accordion-item.is-active{
  border-color:rgba(59,232,255,.45);
  box-shadow:0 0 26px rgba(59,232,255,.14);
}
.accordion-title{
  position:relative;
  display:block;
  padding:20px 60px 20px 24px;
  font-size:1rem;
  font-weight:700;
  color:#E9F2FF !important;
  background:transparent !important;
  border:0 !important;
  line-height:1.6;
}
.accordion-title::before{
  content:"\f067" !important;
  font-family:"Font Awesome 6 Free" !important;
  font-weight:900 !important;
  position:absolute !important;
  right:22px !important;
  top:50% !important;
  left:auto !important;
  margin:0 !important;
  transform:translateY(-50%);
  color:var(--cyan) !important;
  font-size:.85rem;
  background:transparent !important;
  width:auto !important;
  height:auto !important;
  line-height:1 !important;
}
.is-active > .accordion-title::before{content:"\f068" !important;}
.accordion-title:hover{color:var(--cyan) !important;}
.accordion-content{
  display:none;
  padding:0 24px 22px !important;
  background:transparent !important;
  border-top:1px solid var(--line) !important;
  color:var(--muted) !important;
  font-size:.92rem;
  line-height:1.85;
}
.accordion-content p:last-child{margin-bottom:0;}

/* ---------- 入口卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.entry-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-l);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-soft);
  transition:transform var(--t), border-color var(--t);
}
.entry-card:hover{transform:translateY(-4px);border-color:var(--line-cyan);}
.entry-card__media{height:150px;overflow:hidden;}
.entry-card__media img{width:100%;height:100%;border-radius:0;transition:transform .5s ease;}
.entry-card:hover .entry-card__media img{transform:scale(1.05);}
.entry-card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.entry-card__body h3{margin:0;font-size:1.05rem;}
.entry-card__body p{margin:0;font-size:.87rem;color:var(--muted);line-height:1.75;}
.entry-card__body a{margin-top:auto;font-size:.88rem;font-weight:700;color:var(--cyan);display:inline-flex;align-items:center;gap:7px;}
.entry-card__body a:hover{gap:11px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  padding:96px 0;
  background-image:linear-gradient(180deg, rgba(7,12,22,.86), rgba(7,12,22,.96)), url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-inner{
  max-width:920px;
  margin:0 auto;
  text-align:center;
}
.cta-panel{
  margin-top:34px;
  padding:30px;
  border-radius:var(--radius-l);
  background:var(--glass);
  backdrop-filter:blur(16px);
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow);
}
.download-btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-meta{
  margin-top:26px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  text-align:left;
}
.cta-meta div{
  padding:16px 18px;
  border-radius:var(--radius-s);
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
}
.cta-meta strong{display:block;color:var(--amber);font-size:.95rem;font-weight:700;margin-bottom:4px;}
.cta-meta span{font-size:.82rem;color:var(--muted);word-break:break-all;}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;
  padding:72px 0 30px;
  background:linear-gradient(180deg, rgba(10,18,34,.92), rgba(7,12,22,1));
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:38px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:.87rem;color:var(--muted);line-height:1.85;margin:0;max-width:340px;}
.footer-col h4{font-size:.85rem;letter-spacing:.14em;text-transform:uppercase;color:#8FA1B8;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul li a{font-size:.9rem;color:var(--text);}
.footer-col ul li a:hover{color:var(--cyan);}
.footer-contact li{display:flex;gap:10px;font-size:.86rem;color:var(--muted);line-height:1.7;}
.footer-contact li i{color:var(--cyan);margin-top:5px;font-size:.8rem;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:.82rem;
  color:#798BA3;
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .nav-wrap{min-height:68px;}
  .main-nav{
    position:absolute;
    left:0;right:0;top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:10px 20px 18px;
    background:rgba(7,12,22,.98);
    backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line-cyan);
    box-shadow:var(--shadow);
  }
  .main-nav.is-open{display:flex;}
  .nav-item{padding:14px 6px;border-radius:0;border-bottom:1px solid rgba(255,255,255,.06);font-size:.98rem;color:#D5E1F2;}
  .nav-item::after{display:none;}
  .nav-item.is-active{color:var(--cyan);border-left:2px solid var(--cyan);padding-left:12px;}
  .nav-cta-mobile{
    display:inline-flex;
    margin-top:16px;
    width:100%;
  }
  .nav-actions{display:none;}
  .menu-toggle{display:inline-flex;}
  .nav-wrap{gap:0;}
  .brand{margin-right:auto;}
  .mega-panel{display:none;}
  .tabs-bar{top:68px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .hero-stats > div:nth-child(2){border-right:0;}
  .hero-stats > div:nth-child(1),
  .hero-stats > div:nth-child(2){border-bottom:1px solid var(--line);}
  .spec-grid{grid-template-columns:repeat(2,1fr);}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step:not(:last-child)::after{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .hero-c2{padding:82px 0 68px;}
  .hero-c2__sub{font-size:.98rem;}
  .hero-stats{grid-template-columns:1fr;text-align:center;}
  .hero-stats > div{border-right:0;border-bottom:1px solid var(--line);}
  .hero-stats > div:last-child{border-bottom:0;}
  .spec-grid{grid-template-columns:1fr;}
  .entry-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-meta{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .pcard{flex:0 0 272px;}
  .section-head{margin-bottom:32px;}
  .cta-band{padding:64px 0;}
  .footer-bottom{flex-direction:column;}
}

@media (max-width:520px){
  .btn{width:100%;}
  .hero-c2__actions{flex-direction:column;}
  .download-btns .btn{width:100%;}
  .tabs-scroll{padding:12px 0;}
  .tab-chip{padding:0 14px;font-size:.85rem;}
  .accordion-title{padding:18px 52px 18px 18px;font-size:.95rem;}
  .accordion-content{padding:0 18px 20px !important;}
}