/* roulang page: index */
:root{
  --ink-900:#05080E;
  --ink-800:#080D17;
  --ink-700:#0C1320;
  --amber:#F5A524;
  --amber-hi:#FFC85A;
  --amber-deep:#C97E10;
  --cyan:#2BD9C7;
  --cyan-soft:rgba(43,217,199,.14);
  --text:#E9EEF7;
  --text-2:#A6B2C6;
  --text-3:#6B7891;
  --line:rgba(255,255,255,.08);
  --line-amber:rgba(245,165,36,.34);
  --glass:rgba(16,24,38,.66);
  --glass-2:rgba(22,32,48,.52);
  --danger:#F2555A;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --r-xs:12px;
  --shadow-1:0 20px 48px -28px rgba(0,0,0,.85);
  --shadow-2:0 28px 64px -30px rgba(0,0,0,.9);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.88;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body,button,input,select,textarea{
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-weight:700;
  line-height:1.3;
  color:var(--text);
  text-indent:0;
  letter-spacing:0;
}
p{margin:0;}
a{color:var(--amber);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--amber-hi);}
img{max-width:100%;display:block;object-fit:cover;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px dashed var(--amber);
  outline-offset:3px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.grid-container{
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.sec-head h2{font-size:clamp(24px,2.4vw,34px);line-height:1.28;}
.sec-head .sec-note{color:var(--text-2);font-size:13px;line-height:1.7;margin-top:10px;max-width:520px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line-amber);
  background:rgba(245,165,36,.08);
  color:var(--amber-hi);
  font-size:12.5px;
  letter-spacing:.4px;
}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--amber);
  color:#1A1206;
  box-shadow:0 12px 30px -18px rgba(245,165,36,.9);
}
.btn-primary:hover{
  background:var(--amber-hi);
  color:#1A1206;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(255,200,90,.55),0 10px 30px rgba(245,165,36,.34);
}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{
  background:transparent;
  border-color:rgba(43,217,199,.55);
  color:var(--cyan);
}
.btn-ghost:hover{
  background:rgba(43,217,199,.12);
  color:var(--cyan);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(43,217,199,.4),0 10px 28px -12px rgba(43,217,199,.45);
}
.btn-ghost:active{transform:translateY(-1px);}
.btn-line{
  background:transparent;
  border-color:var(--line-amber);
  color:var(--amber);
}
.btn-line:hover{background:rgba(245,165,36,.1);color:var(--amber-hi);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--amber);
  position:relative;
}
.link-more i{font-style:normal;transition:transform .2s var(--ease);}
.link-more::after{
  content:"";
  position:absolute;
  left:0;
  right:16px;
  bottom:-3px;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s var(--ease);
}
.link-more:hover::after{transform:scaleX(1);}
.link-more:hover i{transform:translateX(4px);}
/* ---------- header ---------- */
.site-head{position:relative;z-index:60;}
.topbar{
  height:36px;
  display:flex;
  align-items:center;
  background:rgba(8,13,23,.7);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.topbar-in{
  display:flex;
  align-items:center;
  gap:18px;
  justify-content:space-between;
  font-size:12px;
  color:var(--text-3);
  width:100%;
  height:100%;
}
.topbar-in .tb-l{display:flex;align-items:center;gap:16px;overflow:hidden;}
.topbar-in .tb-l span{white-space:nowrap;}
.topbar-in .tb-l span .dot{
  display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);margin-right:7px;vertical-align:middle;
}
.topbar-in a{font-size:12px;color:var(--amber);white-space:nowrap;}
.topbar-in a:hover{color:var(--amber-hi);}
.main-nav{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,8,14,.55);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.main-nav.is-stuck{
  background:rgba(8,13,23,.86);
  border-bottom-color:var(--line);
}
.nav-in{
  height:72px;
  display:flex;
  align-items:center;
  gap:20px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  color:var(--text);
}
.logo:hover{color:var(--text);}
.logo-mark{width:34px;height:34px;flex:0 0 34px;}
.logo-text{
  font-size:16px;
  font-weight:800;
  letter-spacing:-.2px;
  white-space:nowrap;
}
.logo-text b{color:var(--text);font-weight:800;}
.logo-text i{color:var(--amber);font-style:normal;font-weight:800;}
.nav-chips{
  display:flex;
  align-items:center;
  gap:2px;
  padding:4px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(16,24,38,.55);
  margin-left:auto;
}
.chip-nav{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 18px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.chip-nav:hover{color:var(--text);background:var(--cyan-soft);}
.chip-nav.is-active{
  background:var(--amber);
  color:#1A1206;
  font-weight:700;
  box-shadow:0 8px 22px -14px rgba(245,165,36,.95);
}
.chip-nav.is-active:hover{background:var(--amber-hi);color:#1A1206;}
.nav-right{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
  flex:0 0 auto;
}
.nav-chips + .nav-right{margin-left:0;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(16,24,38,.6);
  color:var(--text-2);
  cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08);}
.burger{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(16,24,38,.6);
  color:var(--text);
  cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
/* drawer */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(5,8,14,.98);
  backdrop-filter:blur(18px);
  display:none;
  flex-direction:column;
  padding:20px 16px 24px;
}
.drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:transparent;color:var(--text);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-list{display:flex;flex-direction:column;flex:1;}
.drawer-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:52px;
  font-size:17px;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-list a::after{content:"→";color:var(--text-3);font-size:15px;}
.drawer-list a.is-active{color:var(--amber);}
.drawer-cta{margin-top:auto;padding-top:20px;}
/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:76px 0 92px;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero-glow{
  position:absolute;
  top:-220px;left:50%;
  transform:translateX(-50%);
  width:900px;height:900px;
  background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:2;}
.hero-copy h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.5px;
  margin:20px 0 18px;
}
.hero-sub{
  font-size:16px;
  color:var(--text-2);
  max-width:520px;
  line-height:1.85;
}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.trust-row{
  display:flex;
  align-items:center;
  gap:0;
  margin-top:36px;
  flex-wrap:wrap;
}
.trust-row li{
  font-size:13px;
  color:var(--text-2);
  padding:0 18px;
  border-left:1px solid var(--line);
  line-height:1.5;
}
.trust-row li:first-child{padding-left:0;border-left:0;}
.trust-row li b{
  display:block;
  font-size:18px;
  font-weight:800;
  color:var(--text);
  letter-spacing:-.3px;
  margin-bottom:2px;
}
.hero-visual{position:relative;margin-top:8px;}
.visual-frame{
  position:relative;
  border-radius:var(--r-sm);
  padding-bottom:6px;
}
.visual-bg{
  width:100%;
  height:300px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  filter:saturate(.7);
  opacity:.85;
}
.visual-bg-mask{
  position:absolute;
  top:0;left:0;right:0;height:300px;
  border-radius:var(--r-sm);
  background:linear-gradient(180deg,rgba(5,8,14,.55),rgba(5,8,14,.88));
}
.visual-main{
  position:relative;
  margin-top:-190px;
  width:100%;
  aspect-ratio:16/10;
  border-radius:var(--r-sm);
  border:1px solid var(--line-amber);
  box-shadow:0 0 60px -10px rgba(245,165,36,.35),var(--shadow-1);
}
.float-card{
  position:absolute;
  width:158px;
  padding:14px 16px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-1);
}
.float-card b{display:block;font-size:19px;font-weight:800;color:var(--amber-hi);letter-spacing:-.3px;line-height:1.25;}
.float-card span{display:block;font-size:12px;color:var(--text-2);margin-top:3px;}
.float-a{left:-14px;top:120px;}
.float-b{right:-10px;bottom:-14px;}
@supports not (backdrop-filter:blur(2px)){
  .float-card{background:#101828;}
  .nav-chips{background:#101828;}
  .icon-btn{background:#101828;}
  .main-nav{background:#080D17;}
}
/* ---------- cards base ---------- */
.card{
  position:relative;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  overflow:hidden;
}
@supports not (backdrop-filter:blur(2px)){.card{background:#101828;}}
.card:hover{transform:translateY(-4px);border-color:var(--line-amber);box-shadow:var(--shadow-2);}
.card-pad{padding:24px;}
.card-img{width:100%;border-radius:var(--r-sm);border:1px solid var(--line);overflow:hidden;}
.card-img img{width:100%;transition:transform .25s var(--ease);}
.card:hover .card-img img{transform:scale(1.02);}
.chip-cat{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--cyan-soft);
  color:var(--cyan);
  font-size:13px;
  line-height:1;
  white-space:nowrap;
}
.chip-hot{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--amber);
  color:#1A1206;
  font-size:13px;
  font-weight:700;
  line-height:1;
  white-space:nowrap;
}
.chip-line{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:12px;
  line-height:1;
}
/* ---------- S2 buy ---------- */
.buy-left{padding:0;}
.buy-cover{position:relative;overflow:hidden;border-radius:var(--r-md) var(--r-md) 0 0;}
.buy-cover img{width:100%;aspect-ratio:16/9;transition:transform .25s var(--ease);}
.card:hover .buy-cover img{transform:scale(1.02);}
.buy-tag{position:absolute;left:18px;top:18px;z-index:2;}
.buy-body{padding:22px 24px 24px;}
.buy-title{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:14px;}
.perk-list li{
  display:flex;
  align-items:flex-start;
  gap:9px;
  font-size:14px;
  color:var(--text-2);
  padding:6px 0;
  line-height:1.7;
}
.perk-list li svg{flex:0 0 18px;margin-top:5px;color:var(--amber);}
.price-row{
  display:flex;
  align-items:flex-end;
  gap:10px;
  margin:18px 0 18px;
  padding-top:16px;
  border-top:1px solid var(--line);
}
.price-main{font-size:32px;font-weight:800;color:var(--amber-hi);letter-spacing:-1px;line-height:1;}
.price-main small{font-size:15px;font-weight:700;margin-right:2px;}
.price-unit{font-size:13px;color:var(--text-3);padding-bottom:4px;}
.buy-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.side-card{
  display:flex;
  gap:14px;
  padding:16px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
  align-items:center;
}
.side-card:hover{transform:translateY(-3px);border-color:var(--line-amber);}
.side-card img{
  width:80px;height:80px;flex:0 0 80px;
  border-radius:var(--r-xs);
  border:1px solid var(--line);
}
.side-card .sc-body{min-width:0;flex:1;}
.side-card h4{
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:6px;
}
.side-card .sc-price{font-size:14px;color:var(--amber);font-weight:700;}
.add-btn{
  width:36px;height:36px;flex:0 0 36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;
  border:1px solid var(--line-amber);
  background:rgba(245,165,36,.1);
  color:var(--amber);
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.add-btn:hover{background:var(--amber);color:#1A1206;transform:scale(1.06);}
/* ---------- S3 grid ---------- */
.grid-card{
  display:flex;
  flex-direction:column;
  padding:0;
  height:100%;
}
.grid-card .gc-cover{position:relative;overflow:hidden;}
.grid-card .gc-cover img{width:100%;aspect-ratio:16/10;transition:transform .25s var(--ease);}
.grid-card:hover .gc-cover img{transform:scale(1.02);}
.grid-card .gc-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.grid-card h3{
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  margin:10px 0 8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.grid-card .gc-desc{
  font-size:13px;
  color:var(--text-2);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:14px;
}
.gc-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.gc-price{font-size:15px;font-weight:800;color:var(--amber-hi);letter-spacing:-.3px;}
.gc-price small{font-size:12px;font-weight:600;color:var(--text-3);margin-left:3px;}
.gc-compare{font-size:13px;color:var(--text-2);}
.gc-compare:hover{color:var(--cyan);}
.hz-card{
  display:flex;
  gap:14px;
  padding:16px;
  height:100%;
  align-items:flex-start;
}
.hz-card img{
  width:96px;height:96px;flex:0 0 96px;
  border-radius:var(--r-xs);
  border:1px solid var(--line);
}
.hz-body{min-width:0;flex:1;display:flex;flex-direction:column;height:100%;}
.hz-body h3{
  font-size:15.5px;
  font-weight:600;
  line-height:1.5;
  margin:8px 0 6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.hz-body p{
  font-size:13px;
  color:var(--text-2);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.hz-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:10px;
}
/* ---------- S4 matrix ---------- */
.matrix-left{position:sticky;top:96px;}
.matrix-left h2{font-size:clamp(24px,2.4vw,34px);line-height:1.28;margin-bottom:14px;}
.matrix-left p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px;margin-bottom:22px;}
.matrix-item{
  display:flex;
  gap:18px;
  padding:22px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass-2);
  transition:border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
  margin-bottom:18px;
}
.matrix-item:hover{border-color:var(--line-amber);background:var(--glass);}
.matrix-item.offset-r{margin-left:24px;}
.matrix-item.offset-l{margin-right:24px;}
.mi-icon{
  width:48px;height:48px;flex:0 0 48px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:14px;
  border:1px solid var(--line-amber);
  background:rgba(245,165,36,.08);
  color:var(--amber);
}
.mi-body h3{font-size:17px;font-weight:600;line-height:1.45;margin-bottom:6px;}
.mi-body p{font-size:14px;color:var(--text-2);line-height:1.78;margin-bottom:12px;}
.mi-tags{display:flex;gap:8px;flex-wrap:wrap;}
/* ---------- S5 news ---------- */
.news-card{
  display:flex;
  flex-direction:column;
  height:100%;
  padding:20px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  color:var(--text);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-amber);box-shadow:var(--shadow-2);color:var(--text);}
.news-card h3{
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  margin:12px 0 8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card p{
  font-size:13px;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.news-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--text-3);
}
.news-meta .arrow{color:var(--amber);font-size:15px;transition:transform .2s var(--ease);}
.news-card:hover .news-meta .arrow{transform:translateX(4px);}
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  min-height:220px;
  padding:32px;
  border:1px dashed var(--line);
  border-radius:var(--r-md);
  text-align:center;
}
.empty-state svg{color:var(--text-3);}
.empty-state p{font-size:13px;color:var(--text-3);}
/* ---------- S6 reviews ---------- */
.review-wrap{position:relative;}
.review-track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 2px 22px;
  scrollbar-width:none;
}
.review-track::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 340px;
  scroll-snap-align:start;
  padding:22px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.stars{display:flex;gap:3px;color:var(--amber);margin-bottom:12px;font-size:13px;letter-spacing:2px;}
.review-card blockquote{
  margin:0 0 18px;
  font-size:15px;
  line-height:1.85;
  color:var(--text);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.review-user{display:flex;align-items:center;gap:10px;}
.avatar{
  width:32px;height:32px;flex:0 0 32px;
  border-radius:50%;
  border:1px solid var(--line-amber);
  background:linear-gradient(140deg,rgba(245,165,36,.5),rgba(43,217,199,.35));
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:#1A1206;
}
.review-user .ru-name{font-size:13px;color:var(--text-2);}
.review-user .chip-cat{margin-left:auto;height:22px;font-size:11px;padding:0 9px;}
.rail-btns{display:flex;gap:10px;}
.rail-btn{
  width:40px;height:40px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(16,24,38,.7);
  color:var(--text-2);
  cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.rail-btn:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08);}
.rail-progress{
  height:2px;
  background:var(--line);
  border-radius:2px;
  overflow:hidden;
  margin-top:4px;
}
.rail-progress span{
  display:block;
  height:100%;
  width:20%;
  background:var(--amber);
  border-radius:2px;
  transition:width .15s linear;
}
/* ---------- S7 assurance ---------- */
.assure{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--glass-2);
  overflow:hidden;
}
.assure-item{
  padding:22px 20px;
  border-left:1px solid var(--line);
  display:flex;
  gap:12px;
  align-items:flex-start;
}
.assure-item:first-child{border-left:0;}
.assure-item svg{flex:0 0 22px;margin-top:2px;color:var(--amber);}
.assure-item h4{font-size:14px;font-weight:600;line-height:1.5;margin-bottom:3px;}
.assure-item p{font-size:12px;color:var(--text-3);line-height:1.6;}
/* ---------- S8 faq ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 0 18px 0;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .2s var(--ease),padding .2s var(--ease);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:-14px;
  top:16px;
  bottom:16px;
  width:3px;
  border-radius:3px;
  background:var(--amber);
  opacity:0;
  transition:opacity .2s var(--ease);
}
.faq-item summary .fi-ico{
  flex:0 0 22px;
  width:22px;height:22px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-3);
  font-size:18px;
  font-weight:400;
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq-item[open] summary{color:var(--amber);}
.faq-item[open] summary::before{opacity:1;}
.faq-item[open] summary .fi-ico{color:var(--amber);transform:rotate(45deg);}
.faq-answer{
  padding:0 0 18px 0;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  max-width:720px;
}
/* ---------- S9 cta ---------- */
.cta-box{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-1);
  padding:44px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-box::before{
  content:"";
  position:absolute;
  left:-120px;top:-160px;
  width:520px;height:520px;
  background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;}
.cta-copy h2{font-size:clamp(22px,2.2vw,30px);line-height:1.3;margin-bottom:10px;}
.cta-copy p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:520px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}
/* ---------- footer ---------- */
.site-foot{
  border-top:1px solid var(--line);
  background:var(--ink-800);
  padding:64px 0 0;
  margin-top:8px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.foot-brand .logo{margin-bottom:16px;}
.foot-brand p{font-size:13px;color:var(--text-2);line-height:1.8;margin-bottom:14px;max-width:320px;}
.foot-domain{font-size:12px;color:var(--text-3);margin-bottom:16px;}
.foot-social{display:flex;gap:10px;}
.foot-social a{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--text-3);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.foot-social a:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08);}
.foot-col h4{
  font-size:14px;
  font-weight:700;
  margin-bottom:16px;
  color:var(--text);
}
.foot-col ul li{margin-bottom:10px;}
.foot-col ul li a{font-size:13px;color:var(--text-2);line-height:1.7;}
.foot-col ul li a:hover{color:var(--amber);}
.foot-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:var(--text-3);
}
.foot-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap;}
.foot-bottom .fb-links a{font-size:12px;color:var(--text-3);}
.foot-bottom .fb-links a:hover{color:var(--text-2);}
/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .nav-chips{display:none;}
  .burger{display:inline-flex;}
  .nav-in{height:64px;}
  .hero{padding:56px 0 64px;}
  .hero-visual{margin-top:36px;}
  .visual-bg{height:220px;}
  .visual-main{margin-top:-140px;}
  .matrix-left{position:static;margin-bottom:24px;}
  .matrix-item.offset-r{margin-left:0;}
  .matrix-item.offset-l{margin-right:0;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .assure{grid-template-columns:1fr 1fr;}
  .assure-item:nth-child(3){border-left:0;border-top:1px solid var(--line);}
  .assure-item:nth-child(4){border-top:1px solid var(--line);}
  .review-card{flex:0 0 280px;}
}
@media screen and (max-width:639px){
  .container,.grid-container{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .section-sm{padding:40px 0;}
  .sec-head{margin-bottom:24px;}
  .topbar-in .tb-l span:nth-child(2){display:none;}
  .topbar-in .tb-l{gap:10px;}
  .nav-right .btn{display:none;}
  .hero-copy h1{font-size:30px;letter-spacing:-.3px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .trust-row li{width:50%;padding:0 0 0 14px;margin-bottom:14px;}
  .trust-row li:nth-child(odd){padding-left:0;border-left:0;}
  .trust-row li b{font-size:16px;}
  .float-a{left:0;top:96px;width:130px;padding:11px 12px;}
  .float-b{display:none;}
  .visual-bg{height:170px;}
  .visual-main{margin-top:-110px;}
  .buy-actions .btn{width:100%;}
  .assure{grid-template-columns:1fr;}
  .assure-item{border-left:0;border-top:1px solid var(--line);}
  .assure-item:first-child{border-top:0;}
  .cta-box{padding:28px 22px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .rail-btns{display:none;}
  .review-card{flex:0 0 82vw;}
  .hz-card{flex-direction:column;}
  .hz-card img{width:100%;height:auto;aspect-ratio:16/10;flex:0 0 auto;}
  .section .grid-x > .cell{margin-bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover,.card:hover,.news-card:hover,.side-card:hover,.add-btn:hover{transform:none !important;}
  .card:hover .card-img img,.grid-card:hover .gc-cover img,.card:hover .buy-cover img{transform:none !important;}
  .link-more:hover i{transform:none !important;}
}

/* roulang page: category1 */
:root{
  --ink-900:#05080E;
  --ink-800:#080D17;
  --ink-700:#0C1320;
  --amber:#F5A524;
  --amber-hi:#FFC85A;
  --amber-deep:#C97E10;
  --cyan:#2BD9C7;
  --cyan-soft:rgba(43,217,199,.14);
  --text:#E9EEF7;
  --text-2:#A6B2C6;
  --text-3:#6B7891;
  --line:rgba(255,255,255,.08);
  --line-amber:rgba(245,165,36,.34);
  --glass:rgba(16,24,38,.66);
  --glass-2:rgba(22,32,48,.52);
  --danger:#F2555A;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --r-pill:999px;
  --shadow:0 20px 48px -28px rgba(0,0,0,.85);
  --shadow-hover:0 28px 64px -30px rgba(0,0,0,.9);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.88;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.3;text-indent:0;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;border:0;background:none;color:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;}
::selection{background:rgba(245,165,36,.28);color:#fff;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.grid-container.gw{
  max-width:var(--container);
  padding-left:24px;
  padding-right:24px;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 顶部信息条 ---------- */
.site-head{position:sticky;top:0;z-index:120;}
.topbar{
  height:36px;
  background:rgba(8,13,23,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  font-size:12px;
  color:var(--text-2);
}
.topbar-in{
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.tb-l{display:flex;align-items:center;gap:20px;min-width:0;}
.tb-l span{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 3px rgba(43,217,199,.16);flex:0 0 auto;}
.topbar a{color:var(--amber);white-space:nowrap;transition:color .2s var(--ease);}
.topbar a:hover{color:var(--amber-hi);}

/* ---------- 主导航 ---------- */
.main-nav{
  background:rgba(5,8,14,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-head.is-scrolled .main-nav{
  background:rgba(8,13,23,.9);
  border-bottom:1px solid var(--line);
}
.nav-in{
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{width:34px;height:34px;flex:0 0 auto;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.2px;white-space:nowrap;}
.logo-text b{color:var(--text);font-weight:800;}
.logo-text i{color:var(--amber);font-style:normal;font-weight:800;}
.nav-chips{
  display:flex;
  align-items:center;
  gap:2px;
  padding:4px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(16,24,38,.55);
}
.chip-nav{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  border-radius:var(--r-pill);
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.chip-nav:hover{color:var(--text);background:var(--cyan-soft);}
.chip-nav.is-active{
  background:var(--amber);
  color:#1A1206;
  font-weight:700;
  box-shadow:0 6px 18px -8px rgba(245,165,36,.9);
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.icon-btn{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08);}
.burger{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  align-items:center;justify-content:center;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--text);position:relative;transition:background .2s var(--ease);}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--text);transition:transform .2s var(--ease);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:700;
  line-height:1;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:var(--amber);
  color:#1A1206;
  box-shadow:0 10px 26px -16px rgba(245,165,36,.9);
}
.btn-primary:hover{
  background:var(--amber-hi);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(255,200,90,.55),0 10px 30px rgba(245,165,36,.34);
}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{
  background:transparent;
  color:var(--cyan);
  border:1px solid rgba(43,217,199,.55);
}
.btn-ghost:hover{
  background:rgba(43,217,199,.12);
  transform:translateY(-2px);
  box-shadow:0 0 24px -6px rgba(43,217,199,.45);
}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px dashed var(--amber);
  outline-offset:3px;
  border-radius:var(--r-pill);
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--amber);
  position:relative;
}
.link-more .arw{transition:transform .2s var(--ease);display:inline-block;}
.link-more:hover .arw{transform:translateX(4px);}
.link-more::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--amber);
  transition:width .22s var(--ease);
}
.link-more:hover::after{width:100%;}

/* ---------- 标签 ---------- */
.chip{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:13px;line-height:1;
  white-space:nowrap;
}
.chip-cat{background:var(--cyan-soft);color:var(--cyan);}
.chip-tag{
  background:rgba(255,255,255,.05);
  color:var(--text-2);
  border:1px solid var(--line);
}
.chip-hot{background:var(--amber);color:#1A1206;font-weight:700;}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:200;
  background:rgba(5,8,14,.98);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  display:none;
  padding:24px 20px 120px;
  overflow-y:auto;
}
.drawer.is-open{display:block;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;color:var(--text-2);
}
.drawer-list{display:flex;flex-direction:column;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 4px;
  border-bottom:1px solid var(--line);
  font-size:16px;color:var(--text);
}
.drawer-list a.is-active{color:var(--amber);font-weight:700;}
.drawer-cta{
  position:fixed;left:20px;right:20px;bottom:20px;
}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(5,8,14,.78),rgba(5,8,14,.9)),url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  min-height:340px;
  display:flex;
  align-items:center;
  padding:56px 0 52px;
}
.page-hero::before{
  content:"";
  position:absolute;
  top:-140px;left:50%;
  width:820px;height:820px;
  transform:translateX(-50%);
  background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:18px;
}
.crumb a{color:var(--text-3);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--amber);}
.crumb .sep{color:rgba(255,255,255,.22);}
.crumb .cur{color:var(--text-2);max-width:24em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.5px;
  margin:14px 0 14px;
}
.page-hero .lede{
  max-width:760px;
  font-size:16px;
  line-height:1.88;
  color:var(--text-2);
}
.hero-anchors{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
}
.anchor-chip{
  display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 16px;
  border-radius:var(--r-pill);
  font-size:13.5px;
  color:var(--text-2);
  border:1px solid var(--line);
  background:var(--glass-2);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.anchor-chip:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.09);}

/* ---------- 区块通用 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.sec-head{margin-bottom:36px;}
.sec-head h2{
  font-size:clamp(24px,2.4vw,34px);
  line-height:1.28;
  font-weight:700;
}
.sec-head .sub{
  margin-top:12px;
  font-size:14px;
  color:var(--text-2);
  max-width:640px;
}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- 功能主体：锚点侧栏 + 横版卡 ---------- */
.fn-wrap{padding:88px 0 96px;}
.anchor-rail{position:relative;}
.anchor-inner{
  position:sticky;
  top:124px;
  padding:22px 20px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow);
}
.anchor-title{
  font-size:12px;letter-spacing:.14em;
  color:var(--text-3);text-transform:uppercase;
  margin-bottom:14px;
}
.anchor-list{display:flex;flex-direction:column;}
.anchor-list a{
  display:block;
  padding:9px 10px 9px 12px;
  font-size:13.5px;
  color:var(--text-2);
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.anchor-list a:hover{
  color:var(--text);
  background:rgba(255,255,255,.035);
  border-left-color:var(--amber);
}
.anchor-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:12px;
  line-height:1.7;
  color:var(--text-3);
}

.fn-card{
  display:flex;
  gap:22px;
  align-items:flex-start;
  padding:24px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  scroll-margin-top:128px;
  margin-bottom:20px;
}
.fn-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-amber);
  box-shadow:var(--shadow-hover);
}
.fn-icon{
  flex:0 0 88px;
  width:88px;height:88px;
  border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(245,165,36,.1);
  border:1px solid var(--line-amber);
  color:var(--amber);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.fn-card:hover .fn-icon{background:rgba(245,165,36,.16);color:var(--amber-hi);}
.fn-body{flex:1 1 auto;min-width:0;}
.fn-body h3{font-size:19px;font-weight:600;line-height:1.45;margin-bottom:8px;}
.fn-body p{font-size:14px;line-height:1.85;color:var(--text-2);}
.fn-tags{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 14px;}
.fn-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:14px;border-top:1px solid var(--line);}
.fn-meta{font-size:12px;color:var(--text-3);}
.fn-meta b{color:var(--cyan);font-weight:600;}

/* ---------- 规格区 ---------- */
.spec-sec{
  padding:88px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(circle at 82% 18%,rgba(245,165,36,.14),transparent 62%),
    var(--ink-800);
  position:relative;
}
.spec-left h2{
  font-size:clamp(24px,2.4vw,34px);
  line-height:1.28;
  margin-bottom:16px;
}
.spec-left p{font-size:15px;line-height:1.88;color:var(--text-2);margin-bottom:18px;}
.check-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2);line-height:1.75;}
.check-list svg{flex:0 0 auto;margin-top:6px;color:var(--amber);}
.spec-figure{
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  overflow:hidden;
  margin-bottom:20px;
  position:relative;
}
.spec-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease);}
.spec-figure:hover img{transform:scale(1.02);}
.spec-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;
  font-size:12px;color:var(--text-2);
  background:linear-gradient(180deg,rgba(5,8,14,0),rgba(5,8,14,.86));
}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.stat-cell{
  padding:18px 18px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--glass-2);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.stat-cell:hover{border-color:var(--line-amber);transform:translateY(-3px);}
.stat-cell .v{
  font-size:28px;font-weight:800;color:var(--amber);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.stat-cell .v small{font-size:13px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat-cell .k{margin-top:6px;font-size:12.5px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-sec{padding:96px 0;background:var(--ink-900);}
.faq-left h2{font-size:clamp(24px,2.4vw,34px);line-height:1.28;margin-bottom:14px;}
.faq-left p{font-size:14px;color:var(--text-2);margin-bottom:22px;max-width:320px;}
.faq-item{
  border-top:1px solid var(--line);
  position:relative;
}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0 18px 0;
  cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease),padding .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  font-size:20px;font-weight:400;color:var(--text-3);
  line-height:1;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.faq-item[open] summary{color:var(--amber);padding-left:12px;}
.faq-item[open] summary::before{
  content:"";
  position:absolute;left:0;top:16px;bottom:16px;
  width:3px;border-radius:3px;background:var(--amber);
}
.faq-item[open] summary::after{content:"−";color:var(--amber);}
.faq-item .faq-a{
  padding:0 0 20px 12px;
  font-size:15px;line-height:1.88;color:var(--text-2);
  max-width:760px;
}

/* ---------- CTA ---------- */
.cta-sec{padding:0 0 96px;}
.cta-box{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow);
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-box::before{
  content:"";
  position:absolute;
  top:-160px;left:-80px;
  width:520px;height:520px;
  background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);
  pointer-events:none;
}
.cta-txt{position:relative;z-index:1;max-width:560px;}
.cta-txt h2{font-size:clamp(22px,2.2vw,30px);line-height:1.3;margin-bottom:12px;}
.cta-txt p{font-size:14.5px;color:var(--text-2);}
.cta-acts{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-foot{
  border-top:1px solid var(--line);
  background:var(--ink-800);
  padding:64px 0 0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.foot-brand p{margin-top:16px;font-size:13.5px;line-height:1.85;color:var(--text-2);max-width:320px;}
.foot-domain{
  font-size:12px !important;
  color:var(--text-3) !important;
  margin-top:10px !important;
  letter-spacing:.02em;
}
.foot-social{display:flex;gap:10px;margin-top:18px;}
.foot-social a{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.foot-social a:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08);}
.foot-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;}
.foot-col ul{display:flex;flex-direction:column;gap:10px;}
.foot-col a{font-size:13.5px;color:var(--text-2);transition:color .2s var(--ease);}
.foot-col a:hover{color:var(--amber);}
.foot-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:var(--text-3);
}
.foot-legal{display:flex;gap:18px;flex-wrap:wrap;}
.foot-legal a{color:var(--text-3);transition:color .2s var(--ease);}
.foot-legal a:hover{color:var(--amber);}

/* ---------- 降级 ---------- */
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .topbar,.main-nav,.anchor-inner,.fn-card,.stat-cell,.cta-box,.drawer{background:#101828;}
  .site-head.is-scrolled .main-nav{background:#0C1320;}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  .anchor-inner{top:112px;}
}
@media screen and (max-width:1023px){
  .nav-chips{display:none;}
  .burger{display:inline-flex;}
  .icon-btn{display:none;}
  .foot-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px;}
  .foot-brand{grid-column:1 / -1;}
  .section{padding:72px 0;}
  .fn-wrap{padding:64px 0 72px;}
  .spec-sec,.faq-sec{padding:72px 0;}
  .cta-sec{padding-bottom:72px;}
  .anchor-inner{
    position:static;
    padding:14px;
    margin-bottom:26px;
  }
  .anchor-title{display:none;}
  .anchor-list{
    flex-direction:row;
    gap:8px;
    overflow-x:auto;
    padding-bottom:6px;
    scrollbar-width:thin;
  }
  .anchor-list a{
    white-space:nowrap;
    border-left:0;
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    padding:7px 14px;
    font-size:13px;
  }
  .anchor-list a:hover{border-color:var(--line-amber);}
  .anchor-note{display:none;}
  .cta-box{padding:36px 28px;}
}
@media screen and (max-width:767px){
  .topbar-in{gap:10px;}
  .tb-l span:nth-child(2){display:none;}
  .container,.grid-container.gw{padding-left:16px;padding-right:16px;}
  .nav-in{height:64px;gap:12px;}
  .logo-text{font-size:15px;}
  .logo-mark{width:30px;height:30px;}
  .nav-right .btn-sm{padding:9px 14px;font-size:13px;}
  .page-hero{min-height:0;padding:40px 0 40px;}
  .page-hero .lede{font-size:15px;}
  .hero-anchors{gap:8px;margin-top:20px;}
  .anchor-chip{height:32px;font-size:12.5px;padding:0 12px;}
  .fn-card{flex-direction:column;gap:16px;padding:20px;}
  .fn-icon{width:64px;height:64px;flex:0 0 64px;border-radius:14px;}
  .fn-icon svg{width:28px;height:28px;}
  .fn-body h3{font-size:17px;}
  .fn-foot{flex-direction:column;align-items:flex-start;gap:10px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:10px;}
  .stat-cell{padding:14px;}
  .stat-cell .v{font-size:22px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .cta-box{padding:28px 20px;}
  .cta-acts{width:100%;flex-direction:column;}
  .cta-acts .btn{width:100%;min-height:48px;}
  .faq-left p{max-width:none;}
  .faq-item summary{font-size:15px;}
  .section{padding:56px 0;}
  .fn-wrap{padding:48px 0 56px;}
  .spec-sec,.faq-sec{padding:56px 0;}
  .cta-sec{padding-bottom:56px;}
  .site-foot{padding-top:48px;}
}
@media screen and (max-width:519px){
  .logo-text{font-size:14px;}
  .nav-right .btn-sm{display:none;}
  .hero-anchors{max-height:none;}
  .stat-grid{grid-template-columns:1fr;}
  .crumb .cur{max-width:16em;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    transition-duration:.001ms !important;
    animation-duration:.001ms !important;
  }
  .fn-card:hover,.stat-cell:hover,.btn:hover,.spec-figure:hover img{transform:none !important;box-shadow:none !important;}
}

/* roulang page: article */
:root{
  --ink-900:#05080E;--ink-800:#080D17;--ink-700:#0C1320;
  --amber:#F5A524;--amber-hi:#FFC85A;--amber-deep:#C97E10;
  --cyan:#2BD9C7;--cyan-soft:rgba(43,217,199,.14);
  --text:#E9EEF7;--text-2:#A6B2C6;--text-3:#6B7891;
  --line:rgba(255,255,255,.08);--line-amber:rgba(245,165,36,.34);
  --glass:rgba(16,24,38,.66);--glass-2:rgba(22,32,48,.52);
  --danger:#F2555A;
  --r-lg:24px;--r-md:18px;--r-sm:14px;--r-pill:999px;
  --shadow-1:0 20px 48px -28px rgba(0,0,0,.85);
  --shadow-2:0 28px 64px -30px rgba(0,0,0,.9);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--ink-900);color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:15.5px;line-height:1.88;letter-spacing:0;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--amber);text-decoration:none;text-underline-offset:3px;transition:color .2s var(--ease)}
a:hover{color:var(--amber-hi)}
button{font-family:inherit}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--text);font-weight:700;letter-spacing:0;line-height:1.3;text-indent:0}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px dashed var(--amber);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.art-grid{max-width:1200px;padding:0 24px}

/* ---------- top bar ---------- */
.topbar{height:36px;background:rgba(10,16,28,.72);border-bottom:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);font-size:12px;color:var(--text-3)}
.topbar-in{display:flex;align-items:center;justify-content:space-between;height:36px;gap:16px}
.tb-l{display:flex;align-items:center;gap:18px;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tb-l span{display:inline-flex;align-items:center;gap:7px}
.tb-l .dot{width:6px;height:6px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 3px rgba(245,165,36,.16)}
.topbar a{color:var(--text-2);font-size:12px;white-space:nowrap}
.topbar a:hover{color:var(--amber)}

/* ---------- nav ---------- */
.site-head{position:sticky;top:0;z-index:60}
.main-nav{background:rgba(8,13,23,.55);border-bottom:1px solid transparent;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);transition:background .25s var(--ease),border-color .25s var(--ease)}
.main-nav.is-scrolled{background:rgba(8,13,23,.88);border-bottom-color:var(--line)}
.nav-in{display:flex;align-items:center;height:72px;gap:22px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;flex:0 0 auto}
.logo-mark{width:34px;height:34px;flex:0 0 auto}
.logo-text{font-size:16.5px;font-weight:800;letter-spacing:-.2px;white-space:nowrap}
.logo-text b{color:var(--text);font-weight:800}
.logo-text i{color:var(--amber);font-style:normal;font-weight:800}
.nav-chips{display:flex;align-items:center;gap:2px;padding:4px;border:1px solid var(--line);border-radius:var(--r-pill);background:rgba(12,19,32,.55)}
.chip-nav{display:inline-flex;align-items:center;height:36px;padding:0 16px;font-size:14px;color:var(--text-2);border-radius:var(--r-pill);transition:all .2s var(--ease)}
.chip-nav:hover{color:var(--text);background:var(--cyan-soft)}
.chip-nav.is-active{background:var(--amber);color:#1A1206;font-weight:700;box-shadow:0 0 22px -6px rgba(245,165,36,.6)}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--text-2);cursor:pointer;transition:all .2s var(--ease)}
.icon-btn:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-pill);border:1px solid transparent;font-size:15px;font-weight:700;cursor:pointer;text-decoration:none;transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn-primary{background:var(--amber);color:#1A1206}
.btn-primary:hover{background:var(--amber-hi);color:#1A1206;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,200,90,.55),0 10px 30px rgba(245,165,36,.34)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--cyan);color:var(--cyan)}
.btn-ghost:hover{background:rgba(43,217,199,.12);color:var(--cyan);box-shadow:0 0 22px -6px rgba(43,217,199,.5);transform:translateY(-2px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--amber);font-weight:700;font-size:14.5px;background:none;border:0;padding:0;cursor:pointer;position:relative}
.btn-text::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--amber);transition:width .22s var(--ease)}
.btn-text:hover::after{width:100%}
.btn-text svg{transition:transform .2s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{display:flex;width:100%}
.burger{display:none;width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:transparent;cursor:pointer;position:relative}
.burger span,.burger span::before,.burger span::after{position:absolute;left:50%;width:16px;height:1.6px;background:var(--text);border-radius:2px;transform:translateX(-50%);transition:.22s var(--ease)}
.burger span{top:50%;margin-top:-1px}
.burger span::before{content:"";top:-5px;left:0;transform:none}
.burger span::after{content:"";top:5px;left:0;transform:none}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:80;background:var(--ink-900);padding:20px 20px 28px;display:none;flex-direction:column;gap:10px}
.drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--text);font-size:20px;line-height:1;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;margin-top:6px}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--amber)}
.drawer-cta{margin-top:auto;padding-top:18px}
.drawer-cta .btn{width:100%}

/* ---------- article hero ---------- */
.art-hero{position:relative;padding:40px 0 72px;overflow:hidden}
.art-hero::before{content:"";position:absolute;top:-260px;left:50%;transform:translateX(-50%);width:1100px;height:640px;background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);pointer-events:none}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);position:relative;flex-wrap:wrap}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--amber)}
.crumb .sep{color:rgba(255,255,255,.2)}
.crumb .cur{display:inline-block;max-width:24ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom;color:var(--text-2)}
.cat-head{margin-top:26px;padding-bottom:16px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;flex-wrap:wrap;position:relative}
.cat-title{font-size:clamp(22px,2.4vw,30px);font-weight:800;color:var(--text)}
.cat-flag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);background:var(--cyan-soft);color:var(--cyan);font-size:13px;font-weight:600}

/* ---------- layout ---------- */
.art-cols{padding-top:36px;align-items:flex-start}
.art-main{padding-right:34px;min-width:0}
.art-side{width:100%}
.side-sticky{position:sticky;top:96px}
@media (max-width:1023.98px){
  .art-main{padding-right:0}
  .art-side{margin-top:44px}
  .side-sticky{position:static}
}

/* ---------- article head ---------- */
.art-title{font-size:clamp(26px,3.4vw,40px);line-height:1.22;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.art-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--text-3);padding-bottom:22px;border-bottom:1px solid var(--line)}
.art-meta .m-chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);background:var(--amber);color:#1A1206;font-size:12.5px;font-weight:700}
.art-meta .m-div{width:1px;height:12px;background:rgba(255,255,255,.14)}
.art-cover{margin-top:26px;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);position:relative;height:300px}
.art-cover img{width:100%;height:100%;object-fit:cover}
.art-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,14,.15),rgba(5,8,14,.7))}
.art-cover figcaption{position:absolute;left:18px;bottom:14px;z-index:2;font-size:12px;color:var(--text-2)}

/* ---------- article body ---------- */
.article-body{max-width:760px;margin-top:34px;font-size:15.5px;line-height:1.9;color:var(--text)}
.article-body p{margin:0 0 20px;color:rgba(233,238,247,.92)}
.article-body h2{position:relative;padding-left:16px;margin:44px 0 16px;font-size:clamp(20px,2vw,25px);font-weight:700;line-height:1.42;color:var(--text)}
.article-body h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--amber)}
.article-body h3{margin:32px 0 12px;font-size:19px;font-weight:600;line-height:1.5;color:var(--text)}
.article-body h4{margin:24px 0 10px;font-size:16.5px;font-weight:600;color:var(--text)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body li{margin-bottom:9px;line-height:1.85;color:rgba(233,238,247,.9)}
.article-body ul li{list-style:square}
.article-body ol li{list-style:decimal}
.article-body li::marker{color:var(--amber)}
.article-body a{color:var(--amber);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article-body a:hover{color:var(--amber-hi)}
.article-body strong{color:#fff;font-weight:700}
.article-body blockquote{margin:26px 0;padding:18px 20px;border-left:3px solid var(--cyan);background:rgba(43,217,199,.08);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-sm);border:1px solid var(--line);margin:22px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;display:block;overflow-x:auto;white-space:nowrap}
.article-body th{background:rgba(255,255,255,.06);color:var(--text);font-size:13px;letter-spacing:.4px;text-align:left}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px;background:#0A1220;border:1px solid var(--line);padding:2px 6px;border-radius:6px}
.article-body pre{background:#0A1220;border:1px solid var(--line);border-radius:var(--r-sm);padding:16px;overflow-x:auto;margin:22px 0}
.article-body pre code{border:0;background:none;padding:0;font-size:13.5px;line-height:1.7}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}

/* ---------- empty ---------- */
.empty-wrap{padding:56px 24px;text-align:center;border:1px dashed var(--line);border-radius:var(--r-md);background:rgba(255,255,255,.015);margin-top:30px}
.empty-wrap svg{color:var(--text-3);margin:0 auto 14px}
.empty-wrap p{font-size:14px;color:var(--text-2);margin-bottom:18px}

/* ---------- tags / back ---------- */
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:40px;padding-top:22px;border-top:1px solid var(--line)}
.tag-row .tag-label{font-size:12px;color:var(--text-3);margin-right:2px}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:13px;background:var(--cyan-soft);color:var(--cyan);transition:all .2s var(--ease)}
.tag:hover{background:rgba(43,217,199,.24);color:var(--cyan)}
.back-row{display:flex;justify-content:center;margin-top:34px}

/* ---------- side ---------- */
.side-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);padding:20px;box-shadow:var(--shadow-1);margin-bottom:20px;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%)}
@supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
  .side-card{background:#101828}
}
.side-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.side-title{font-size:14px;font-weight:700;color:var(--text);letter-spacing:.2px}
.side-title span{color:var(--amber)}
.toc-toggle{display:none;font-size:12.5px;color:var(--amber);background:none;border:0;cursor:pointer}
.toc{font-size:13.5px}
.toc a{display:block;padding:7px 0 7px 12px;border-left:2px solid transparent;color:var(--text-2);line-height:1.55;transition:all .2s var(--ease)}
.toc a:hover{color:var(--text);border-left-color:rgba(245,165,36,.4)}
.toc a.is-active{color:var(--amber);border-left-color:var(--amber);background:linear-gradient(90deg,rgba(245,165,36,.08),transparent)}
.toc-empty{font-size:13px;color:var(--text-3)}
.pick-item{display:block;padding:13px 0;border-bottom:1px solid var(--line)}
.pick-item:last-child{border-bottom:0;padding-bottom:0}
.pick-item:first-of-type{padding-top:0}
.pick-item .p-t{font-size:14px;color:var(--text);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s var(--ease)}
.pick-item:hover .p-t{color:var(--amber)}
.pick-item .p-d{font-size:12px;color:var(--text-3);margin-top:6px}
.buy-card{border-color:var(--line-amber);background:linear-gradient(180deg,rgba(245,165,36,.08),rgba(16,24,38,.7))}
.buy-card .b-h{font-size:15.5px;font-weight:700;color:var(--text)}
.buy-card .b-p{font-size:13px;color:var(--text-2);margin:8px 0 16px;line-height:1.7}
.buy-card .b-price{display:flex;align-items:baseline;gap:6px;margin-bottom:16px}
.buy-card .b-price em{font-style:normal;font-size:26px;font-weight:800;color:var(--amber)}
.buy-card .b-price small{font-size:12px;color:var(--text-3)}

/* ---------- related ---------- */
.section{padding:76px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:800}
.sec-head .sub{font-size:13px;color:var(--text-2);margin-top:8px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{display:block;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-amber);box-shadow:var(--shadow-2)}
.rel-card .rc-img{height:150px;overflow:hidden;border-bottom:1px solid var(--line)}
.rel-card .rc-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rel-card:hover .rc-img img{transform:scale(1.04)}
.rel-card .rc-body{padding:18px}
.rel-card .rc-body h3{font-size:15.5px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .rc-body p{font-size:13px;color:var(--text-2);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .rc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:12px;color:var(--text-3)}

/* ---------- cta ---------- */
.cta-box{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);padding:38px;background:var(--glass);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;box-shadow:var(--shadow-1)}
@supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
  .cta-box{background:#101828}
}
.cta-box::before{content:"";position:absolute;left:-120px;top:-140px;width:420px;height:420px;background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);pointer-events:none}
.cta-box h2{font-size:clamp(20px,2.2vw,27px);font-weight:800;position:relative}
.cta-box p{font-size:13.5px;color:var(--text-2);margin-top:10px;position:relative;max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}

/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--line);background:var(--ink-800);padding:64px 0 26px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{font-size:13.5px;color:var(--text-2);line-height:1.8;max-width:330px}
.foot-domain{font-size:12px;color:var(--text-3);margin-top:12px;letter-spacing:.4px}
.foot-social{display:flex;gap:10px;margin-top:16px}
.foot-social a{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid var(--line);color:var(--text-2);transition:all .2s var(--ease)}
.foot-social a:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08)}
.foot-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px}
.foot-col ul{list-style:none}
.foot-col li{margin-bottom:10px}
.foot-col a{font-size:13.5px;color:var(--text-2)}
.foot-col a:hover{color:var(--amber)}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:44px;padding-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--text-3)}
.foot-bottom ul{display:flex;gap:16px;list-style:none;flex-wrap:wrap}
.foot-bottom a{color:var(--text-3);font-size:12px}
.foot-bottom a:hover{color:var(--amber)}

/* ---------- responsive ---------- */
@media (max-width:1023.98px){
  .nav-chips{display:none}
  .burger{display:inline-flex;align-items:center;justify-content:center}
  .nav-in{gap:14px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  .container,.art-grid{padding:0 18px}
  .section{padding:56px 0}
  .art-hero{padding:28px 0 52px}
  .art-cover{height:220px}
  .cta-box{padding:26px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .toc-toggle{display:inline-block}
  .toc-wrap{display:none}
  .toc-wrap.is-open{display:block}
}
@media (max-width:639.98px){
  body{font-size:15px}
  .container,.art-grid{padding:0 16px}
  .tb-l span+span{display:none}
  .logo-text{font-size:15px}
  .nav-right .btn-sm{display:none}
  .rel-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .art-title{font-size:24px}
  .article-body{font-size:15px}
  .side-card{padding:16px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
  .btn:hover,.rel-card:hover,.btn-primary:hover,.btn-ghost:hover{transform:none !important;box-shadow:none !important}
  .rel-card:hover .rc-img img{transform:none !important}
}

/* roulang page: category2 */
:root{
  --ink-900:#05080E; --ink-800:#080D17; --ink-700:#0C1320;
  --amber:#F5A524; --amber-hi:#FFC85A; --amber-deep:#C97E10;
  --cyan:#2BD9C7; --cyan-soft:rgba(43,217,199,.14);
  --text:#E9EEF7; --text-2:#A6B2C6; --text-3:#6B7891;
  --line:rgba(255,255,255,.08); --line-amber:rgba(245,165,36,.34);
  --glass:rgba(16,24,38,.66); --glass-2:rgba(22,32,48,.52);
  --danger:#F2555A;
  --r-lg:24px; --r-md:18px; --r-sm:14px; --r-xs:12px;
  --sh-1:0 20px 48px -28px rgba(0,0,0,.85);
  --sh-2:0 28px 64px -30px rgba(0,0,0,.9);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:Inter,"SF Pro Display",system-ui,-apple-system,"PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink-900);color:var(--text);
  font-family:var(--font);font-size:16px;line-height:1.88;letter-spacing:0;
  -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 50% 0%,rgba(245,165,36,.09),transparent 62%);
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.3;text-indent:0;color:var(--text)}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.16;font-weight:800;letter-spacing:-.5px}
h2{font-size:clamp(24px,2.4vw,34px);line-height:1.28}
h3{font-size:19px;line-height:1.45;font-weight:600}
h4{font-size:16px;line-height:1.5;font-weight:600}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
a{color:var(--amber);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--amber-hi)}
img{max-width:100%;display:block;object-fit:cover}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(245,165,36,.3);color:#fff}
:focus-visible{outline:2px dashed var(--amber);outline-offset:3px;border-radius:6px}

.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.grid-x.gx{margin-left:-12px;margin-right:-12px}
.grid-x.gx > .cell{padding-left:12px;padding-right:12px}
.section{padding:96px 0;position:relative;z-index:1}
.section-tight{padding:72px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head p{color:var(--text-2);font-size:14px;margin:10px 0 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);font-weight:700;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--amber);display:block}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;font-family:inherit;font-size:15px;font-weight:700;line-height:1;
  padding:15px 26px;border-radius:999px;text-decoration:none;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--amber);color:#1A1206}
.btn-primary:hover{background:var(--amber-hi);color:#1A1206;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,200,90,.55),0 10px 30px rgba(245,165,36,.34)}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,200,90,.4),0 6px 18px rgba(245,165,36,.26)}
.btn-ghost{background:transparent;color:var(--cyan);border:1px solid var(--cyan)}
.btn-ghost:hover{background:rgba(43,217,199,.12);color:var(--cyan);box-shadow:0 0 0 1px rgba(43,217,199,.3),0 8px 26px -12px rgba(43,217,199,.4)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--amber);font-weight:600;font-size:14px;padding:6px 0;border-radius:0;background:none;border:0;border-bottom:1px solid transparent;cursor:pointer;transition:color .2s var(--ease)}
.btn-text .ar{transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--amber-hi);border-bottom-color:rgba(245,165,36,.6)}
.btn-text:hover .ar{transform:translateX(4px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{display:flex;width:100%}

/* ---------- 标签 ---------- */
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;font-size:13px;border-radius:999px;line-height:1;font-weight:600}
.tag-cyan{background:var(--cyan-soft);color:var(--cyan)}
.tag-amber{background:var(--amber);color:#1A1206}
.tag-line{border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.02);font-weight:500}
.tag-sm{height:24px;font-size:12px;padding:0 10px}

/* ---------- 顶部信息条 ---------- */
.site-head{position:relative;z-index:40}
.topbar{height:36px;background:rgba(8,13,23,.7);border-bottom:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);display:flex;align-items:center}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.tb-l{display:flex;align-items:center;gap:24px;font-size:12px;color:var(--text-3);min-width:0}
.tb-l span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--cyan);margin-right:7px;vertical-align:middle;box-shadow:0 0 0 3px rgba(43,217,199,.14)}
.topbar-in > a{font-size:12px;color:var(--text-2);white-space:nowrap}
.topbar-in > a:hover{color:var(--amber)}

/* ---------- 主导航 ---------- */
.main-nav{
  position:sticky;top:0;z-index:60;height:72px;display:flex;align-items:center;
  background:rgba(5,8,14,.45);border-bottom:1px solid transparent;
  backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.main-nav.is-scrolled{background:rgba(8,13,23,.9);border-bottom-color:var(--line)}
.nav-in{display:flex;align-items:center;gap:20px;width:100%;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.logo-mark{width:34px;height:34px;flex:0 0 auto}
.logo-text{font-size:17px;line-height:1;letter-spacing:0;white-space:nowrap}
.logo-text b{color:var(--text);font-weight:800}
.logo-text i{color:var(--amber);font-style:normal;font-weight:800}
.nav-chips{
  display:flex;align-items:center;gap:4px;padding:4px;margin:0 auto;
  border:1px solid var(--line);border-radius:999px;background:rgba(22,32,48,.5);
}
.chip-nav{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  font-size:14px;color:var(--text-2);font-weight:500;transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.chip-nav:hover{color:var(--text);background:var(--cyan-soft)}
.chip-nav.is-active{background:var(--amber);color:#1A1206;font-weight:700;box-shadow:0 0 18px -6px rgba(245,165,36,.7)}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:50%;background:rgba(255,255,255,.02);
  color:var(--text-2);cursor:pointer;transition:border-color .2s,color .2s,background .2s;
}
.icon-btn:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08)}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:rgba(255,255,255,.02);cursor:pointer;position:relative;
}
.burger span,.burger span::before,.burger span::after{
  position:absolute;left:50%;transform:translateX(-50%);width:18px;height:1.5px;background:var(--text);border-radius:2px;content:"";display:block;
}
.burger span{top:50%;margin-top:-.75px}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:120;background:var(--ink-800);
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:20px;
}
.mobile-drawer.is-open{transform:translateX(0)}
.md-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.md-title{font-size:13px;color:var(--text-3);letter-spacing:.16em}
.md-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:none;color:var(--text);font-size:20px;cursor:pointer}
.md-list{flex:1;margin-top:8px}
.md-list a{
  display:flex;align-items:center;justify-content:space-between;height:52px;
  color:var(--text);font-size:17px;border-bottom:1px solid var(--line);
}
.md-list a::after{content:"→";color:var(--text-3);font-size:15px}
.md-list a.is-active{color:var(--amber)}
.md-list a.is-active::after{color:var(--amber)}
.md-foot{padding-top:18px;border-top:1px solid var(--line)}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding-top:32px;flex-wrap:wrap}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--amber)}
.crumbs span{color:rgba(255,255,255,.2)}
.crumbs em{font-style:normal;color:var(--text-2);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Hero 标题带 ---------- */
.page-hero{position:relative;overflow:hidden;padding-bottom:8px}
.page-hero::after{
  content:"";position:absolute;left:50%;top:-140px;transform:translateX(-50%);
  width:900px;height:620px;pointer-events:none;
  background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);
}
.page-hero .grid-container{position:relative;z-index:1}
.hero-band{padding:44px 0 64px;max-width:860px}
.hero-band h1{margin:18px 0 20px}
.hero-band h1 .hl{color:var(--amber)}
.hero-lead{font-size:17px;line-height:1.9;color:var(--text-2);max-width:720px;margin:0 0 28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.hero-meta .tag-line{height:30px;font-size:13px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 数据条 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--glass);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;box-shadow:var(--sh-1);
}
.stat-cell{padding:26px 22px;border-right:1px solid var(--line)}
.stat-cell:last-child{border-right:0}
.stat-num{font-family:var(--font-num);font-size:30px;font-weight:800;color:var(--amber);line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.5px}
.stat-num small{font-size:13px;font-weight:600;color:var(--text-2);margin-left:4px}
.stat-label{font-size:13px;color:var(--text-2);margin-top:8px;line-height:1.6}

/* ---------- 时间线 ---------- */
.timeline{position:relative}
.tl-item{position:relative;display:grid;grid-template-columns:72px 1fr;gap:0;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-rail{position:relative;display:flex;justify-content:flex-start;padding-top:6px}
.tl-rail::before{
  content:"";position:absolute;left:19px;top:44px;bottom:-28px;width:1px;
  background:linear-gradient(180deg,var(--line-amber),rgba(255,255,255,.06));
}
.tl-item:last-child .tl-rail::before{display:none}
.tl-dot{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--amber);color:#1A1206;font-family:var(--font-num);font-weight:800;font-size:16px;
  font-variant-numeric:tabular-nums;box-shadow:0 0 0 6px rgba(245,165,36,.1);flex:0 0 auto;
}
.tl-card{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--glass);
  padding:24px 26px;box-shadow:var(--sh-1);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:var(--line-amber);box-shadow:var(--sh-2)}
.tl-card h3{margin-bottom:10px}
.tl-card p{font-size:15px;color:var(--text-2);margin:0 0 16px;line-height:1.85}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px}
.tl-note{font-size:12px;color:var(--text-3);margin-top:14px}

/* ---------- 专题卡网格 ---------- */
.lesson-card{
  display:flex;flex-direction:column;height:100%;
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  background:var(--glass-2);box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.lesson-card:hover{transform:translateY(-4px);border-color:var(--line-amber);box-shadow:var(--sh-2)}
.lesson-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;border-bottom:1px solid var(--line)}
.lesson-thumb img{width:100%;height:100%;transition:transform .5s var(--ease)}
.lesson-card:hover .lesson-thumb img{transform:scale(1.04)}
.lesson-thumb .tag{position:absolute;left:12px;top:12px}
.lesson-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.lesson-body h3{font-size:16px;margin-bottom:10px}
.lesson-body p{font-size:13px;line-height:1.75;color:var(--text-2);margin:0 0 16px;flex:1}
.lesson-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line)}
.lesson-foot .meta{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- 卡点区（非对称） ---------- */
.pit-stop{position:sticky;top:104px}
.pit-stop h2{margin-bottom:16px}
.pit-stop > p{color:var(--text-2);font-size:15px;margin-bottom:22px}
.pit-figure{margin-top:22px;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.pit-figure img{width:100%;aspect-ratio:4/3}
.pit-list{display:flex;flex-direction:column;gap:0}
.pit-item{
  display:grid;grid-template-columns:44px 1fr;gap:16px;
  padding:22px 18px;border-top:1px solid var(--line);
  transition:background .2s var(--ease);position:relative;
}
.pit-item:last-child{border-bottom:1px solid var(--line)}
.pit-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;
  background:var(--amber);opacity:0;transition:opacity .2s var(--ease);border-radius:2px;
}
.pit-item:hover{background:rgba(255,255,255,.03)}
.pit-item:hover::before{opacity:1}
.pit-ico{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-amber);background:rgba(245,165,36,.07);color:var(--amber);
}
.pit-item h3{font-size:16px;margin-bottom:6px}
.pit-item p{font-size:14px;color:var(--text-2);margin:0 0 10px;line-height:1.78}
.pit-item .tag{height:24px;font-size:12px;padding:0 10px}

/* ---------- 保障条 ---------- */
.guard{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-md);
  background:rgba(22,32,48,.5);overflow:hidden;
}
.guard-item{padding:24px 20px;border-right:1px solid var(--line);display:flex;gap:12px;align-items:flex-start}
.guard-item:last-child{border-right:0}
.guard-ico{color:var(--amber);flex:0 0 auto;margin-top:2px}
.guard-item h4{font-size:14px;margin-bottom:4px}
.guard-item p{font-size:12px;color:var(--text-3);margin:0;line-height:1.6}

/* ---------- FAQ ---------- */
.faq-side h2{margin-bottom:14px}
.faq-side p{font-size:14px;color:var(--text-2);margin-bottom:22px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item::before{
  content:"";position:absolute;left:-14px;top:18px;bottom:18px;width:3px;border-radius:3px;
  background:var(--amber);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.55;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--amber)}
.faq-item.is-open .faq-q{color:var(--amber)}
.faq-ico{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-ico::before{left:0;top:8px;width:18px;height:1.6px}
.faq-ico::after{left:8px;top:0;width:1.6px;height:18px}
.faq-item.is-open .faq-ico::after{transform:scaleY(0);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-in{overflow:hidden}
.faq-a-in p{font-size:15px;line-height:1.85;color:var(--text-2);padding:0 0 20px;margin:0;max-width:680px}

/* ---------- CTA ---------- */
.cta-box{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--glass);padding:48px;
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-1);
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
}
.cta-box::before{
  content:"";position:absolute;left:-120px;top:-140px;width:520px;height:420px;pointer-events:none;
  background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);
}
.cta-box > *{position:relative;z-index:1}
.cta-box h2{font-size:clamp(22px,2.2vw,30px);margin-bottom:12px}
.cta-box p{color:var(--text-2);font-size:15px;margin:0}
.cta-actions{display:flex;gap:14px;justify-content:flex-end;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-foot{border-top:1px solid var(--line);background:var(--ink-900);padding:64px 0 0;position:relative;z-index:1}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px 32px;padding-bottom:48px}
.foot-brand .logo{margin-bottom:18px}
.foot-brand p{font-size:13px;color:var(--text-2);line-height:1.85;margin:0 0 12px;max-width:320px}
.foot-domain{font-size:12px;color:var(--text-3);font-family:var(--font-num);letter-spacing:.02em}
.foot-social{display:flex;gap:10px;margin-top:18px}
.foot-social a{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.foot-social a:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08)}
.foot-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.foot-col ul li{margin-bottom:11px}
.foot-col ul a{font-size:13px;color:var(--text-2)}
.foot-col ul a:hover{color:var(--amber)}
.foot-bar{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bar p{font-size:12px;color:var(--text-3);margin:0}
.foot-bar .links{display:flex;gap:18px;flex-wrap:wrap}
.foot-bar .links a{font-size:12px;color:var(--text-3)}
.foot-bar .links a:hover{color:var(--amber)}

/* ---------- 降级 ---------- */
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .main-nav,.topbar,.stat-band,.tl-card,.cta-box{background:#101828}
  .lesson-card{background:#0C1320}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-chips{display:none}
  .nav-in{justify-content:space-between}
  .burger{display:block}
  .icon-btn{display:none}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .cta-box{grid-template-columns:1fr;padding:36px}
  .cta-actions{justify-content:flex-start}
  .pit-stop{position:static;margin-bottom:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:767px){
  .grid-container{padding-left:16px;padding-right:16px}
  .grid-x.gx{margin-left:-8px;margin-right:-8px}
  .grid-x.gx > .cell{padding-left:8px;padding-right:8px}
  .section{padding:56px 0}
  .topbar-in .tb-l span:nth-child(2){display:none}
  .stat-band{grid-template-columns:1fr 1fr}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--line)}
  .guard{grid-template-columns:1fr 1fr}
  .guard-item:nth-child(2){border-right:0}
  .guard-item:nth-child(1),.guard-item:nth-child(2){border-bottom:1px solid var(--line)}
  .tl-item{grid-template-columns:48px 1fr}
  .tl-dot{width:34px;height:34px;font-size:14px}
  .tl-rail::before{left:16px;top:38px}
  .tl-card{padding:20px}
  .hero-band{padding:32px 0 48px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .foot-bar{justify-content:flex-start}
}
@media (max-width:519px){
  .logo-text{font-size:15px}
  .logo-mark{width:30px;height:30px}
  .stat-num{font-size:24px}
  .stat-cell{padding:20px 16px}
  .cta-box{padding:26px 20px}
  .crumbs{padding-top:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .tl-card:hover,.lesson-card:hover,.btn:hover{transform:none!important;box-shadow:none!important}
  .lesson-card:hover .lesson-thumb img{transform:none!important}
}

/* roulang page: category3 */
:root{
  --ink-900:#05080E;--ink-800:#080D17;--ink-700:#0C1320;
  --amber:#F5A524;--amber-hi:#FFC85A;--amber-deep:#C97E10;
  --cyan:#2BD9C7;--cyan-soft:rgba(43,217,199,.14);
  --text:#E9EEF7;--text-2:#A6B2C6;--text-3:#6B7891;
  --line:rgba(255,255,255,.08);--line-amber:rgba(245,165,36,.34);
  --glass:rgba(16,24,38,.66);--glass-2:rgba(22,32,48,.52);
  --danger:#F2555A;
  --r-lg:24px;--r-md:18px;--r-sm:14px;--r-xs:12px;
  --shadow:0 20px 48px -28px rgba(0,0,0,.85);
  --shadow-hover:0 28px 64px -30px rgba(0,0,0,.9);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink-900);color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:15px;line-height:1.88;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--amber-hi)}
button{font-family:inherit}
h1,h2,h3,h4,h5,h6{font-weight:700;margin:0;color:var(--text);text-indent:0;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- header ---------- */
.site-head{position:relative;z-index:60}
.topbar{
  height:36px;background:rgba(10,16,28,.72);border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.topbar-in{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.tb-l{display:flex;align-items:center;gap:20px;font-size:12px;color:var(--text-3);white-space:nowrap;overflow:hidden}
.tb-l .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--amber);margin-right:6px;vertical-align:1px}
.topbar-in>a{font-size:12px;color:var(--text-2);white-space:nowrap}
.topbar-in>a:hover{color:var(--amber)}
.main-nav{
  position:sticky;top:0;z-index:50;
  background:rgba(8,13,23,.62);border-bottom:1px solid transparent;
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.main-nav.is-solid{background:rgba(8,13,23,.9);border-bottom-color:var(--line)}
.nav-in{height:72px;display:flex;align-items:center;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:34px;height:34px;flex:0 0 34px}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.2px;line-height:1;white-space:nowrap}
.logo-text b{color:var(--text);font-weight:800}
.logo-text i{color:var(--amber);font-style:normal;font-weight:800}
.nav-chips{
  display:flex;align-items:center;gap:2px;padding:4px;margin-left:8px;
  border:1px solid var(--line);border-radius:999px;background:var(--glass-2);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.chip-nav{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  font-size:14px;color:var(--text-2);transition:all .2s var(--ease);white-space:nowrap;
}
.chip-nav:hover{color:var(--text);background:var(--cyan-soft)}
.chip-nav.is-active{background:var(--amber);color:#1A1206;font-weight:700;box-shadow:0 6px 18px -8px rgba(245,165,36,.8)}
.chip-nav.is-active:hover{background:var(--amber-hi);color:#1A1206}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--text-2);
  cursor:pointer;transition:all .2s var(--ease);
}
.icon-btn:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08)}
.burger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:transparent;cursor:pointer;position:relative;
}
.burger span,.burger span::before,.burger span::after{
  position:absolute;left:50%;width:18px;height:1.6px;background:var(--text);border-radius:2px;
  transform:translateX(-50%);transition:all .2s var(--ease);
}
.burger span{top:50%;margin-top:-.8px}
.burger span::before{content:"";left:0;top:-6px;transform:none}
.burger span::after{content:"";left:0;top:6px;transform:none}
.burger.is-open span{background:transparent}
.burger.is-open span::before{top:0;transform:rotate(45deg)}
.burger.is-open span::after{top:0;transform:rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  transition:all .2s var(--ease);text-align:center;white-space:nowrap;
}
.btn:focus-visible{outline:2px dashed var(--amber);outline-offset:3px}
.btn-primary{background:var(--amber);color:#1A1206;font-weight:700}
.btn-primary:hover{background:var(--amber-hi);color:#1A1206;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,200,90,.55),0 10px 30px rgba(245,165,36,.34)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--cyan);border-color:var(--cyan)}
.btn-ghost:hover{background:rgba(43,217,199,.12);color:var(--cyan);box-shadow:0 0 24px -8px rgba(43,217,199,.6);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--amber);font-weight:600;font-size:14px;
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.btn-text svg{transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--amber-hi);border-bottom-color:var(--amber-hi)}
.btn-text:hover svg{transform:translateX(4px)}

/* ---------- chips / tags / badge ---------- */
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--cyan-soft);color:var(--cyan);font-size:13px;line-height:1;white-space:nowrap;
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--amber);color:#1A1206;font-size:13px;font-weight:700;line-height:1;white-space:nowrap;
}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);font-size:12px;line-height:1;white-space:nowrap;
}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero .hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  filter:saturate(.85);
}
.page-hero .hero-bg::after{content:"";position:absolute;inset:0;background:rgba(5,8,14,.78)}
.page-hero .hero-glow{
  position:absolute;top:-120px;left:50%;width:760px;height:520px;transform:translateX(-50%);
  background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);
  pointer-events:none;
}
.hero-body{position:relative;padding:76px 0 64px;max-width:820px}
.hero-body h1{font-size:clamp(30px,4.2vw,46px);line-height:1.16;letter-spacing:-.5px;font-weight:800;margin:18px 0 16px}
.hero-body h1 em{font-style:normal;color:var(--amber)}
.hero-lead{font-size:16px;color:var(--text-2);max-width:600px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-facts{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:34px}
.hero-facts span{
  display:inline-flex;align-items:center;font-size:13px;color:var(--text-2);
  padding:0 18px;border-left:1px solid var(--line);
}
.hero-facts span:first-child{padding-left:0;border-left:0}
.hero-facts b{color:var(--amber);font-weight:700;margin-right:6px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--amber)}
.crumb i{font-style:normal;color:var(--text-3);opacity:.6}
.crumb .cur{color:var(--text-2);max-width:24ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- section ---------- */
.sec{padding:96px 0;position:relative}
.sec-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head h2{font-size:clamp(24px,2.4vw,34px);line-height:1.28;letter-spacing:-.3px}
.sec-head p{margin-top:12px;font-size:14px;color:var(--text-2);line-height:1.85}
.sec-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--amber);letter-spacing:.08em;margin-bottom:12px}
.sec-kicker::before{content:"";width:18px;height:1px;background:var(--amber)}

/* ---------- compare table ---------- */
.cmp-wrap{
  position:relative;overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--glass);box-shadow:var(--shadow);-webkit-overflow-scrolling:touch;
}
.cmp-table{width:100%;min-width:780px;border-collapse:collapse;font-size:14px}
.cmp-table caption{text-align:left;padding:18px 20px 0;color:var(--text-3);font-size:12px}
.cmp-table th,.cmp-table td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);color:var(--text-2);vertical-align:middle}
.cmp-table thead th{
  background:rgba(22,32,48,.86);color:var(--text);font-size:13px;font-weight:700;
  letter-spacing:.02em;position:sticky;top:0;z-index:3;white-space:nowrap;
}
.cmp-table tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.cmp-table tbody tr:hover{background:rgba(245,165,36,.05)}
.cmp-table th:first-child,.cmp-table td:first-child{
  position:sticky;left:0;z-index:2;background:#0A1120;color:var(--text);font-weight:600;
  box-shadow:1px 0 0 var(--line);min-width:140px;
}
.cmp-table thead th:first-child{background:#101A2B;z-index:4}
.cmp-table td strong{color:var(--amber);font-weight:700}
.cmp-reco-col{background:rgba(245,165,36,.07)!important;box-shadow:inset 0 0 0 1px var(--line-amber)}
.cmp-table thead th.cmp-reco-col{background:rgba(245,165,36,.14)!important;color:var(--amber)}
.reco-flag{
  display:inline-flex;align-items:center;height:20px;padding:0 8px;border-radius:999px;
  background:var(--amber);color:#1A1206;font-size:11px;font-weight:700;margin-left:8px;vertical-align:1px;
}
.cmp-foot{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:18px;flex-wrap:wrap}
.cmp-foot p{font-size:12px;color:var(--text-3)}

/* ---------- plans ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.plan-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--shadow);transition:all .2s var(--ease);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
}
.plan-card:hover{transform:translateY(-4px);border-color:var(--line-amber);box-shadow:var(--shadow-hover)}
.plan-card.is-reco{border-color:var(--amber);box-shadow:0 0 0 1px rgba(245,165,36,.35),0 24px 60px -30px rgba(245,165,36,.45)}
.plan-ribbon{
  position:absolute;top:-13px;left:24px;height:26px;padding:0 14px;border-radius:999px;
  background:var(--amber);color:#1A1206;font-size:12px;font-weight:800;display:inline-flex;align-items:center;
}
.plan-name{font-size:19px;font-weight:700;letter-spacing:-.2px}
.plan-desc{margin-top:8px;font-size:13px;color:var(--text-2);line-height:1.75;min-height:46px}
.plan-price{display:flex;align-items:baseline;gap:6px;margin:18px 0 4px;font-variant-numeric:tabular-nums}
.plan-price .cur{font-size:15px;color:var(--amber);font-weight:700}
.plan-price .amount{font-size:36px;font-weight:800;line-height:1;color:var(--text);letter-spacing:-1px}
.plan-price .unit{font-size:13px;color:var(--text-3)}
.plan-list{margin:20px 0 26px;display:grid;gap:12px}
.plan-list li{display:flex;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.check{
  flex:0 0 18px;width:18px;height:18px;border-radius:50%;border:1px solid var(--line-amber);
  display:inline-flex;align-items:center;justify-content:center;margin-top:3px;background:rgba(245,165,36,.1);
}
.check svg{width:11px;height:11px;stroke:var(--amber)}
.plan-card .btn{margin-top:auto}
.plan-more{display:block;margin-top:14px;text-align:center;font-size:13px;color:var(--text-3)}
.plan-more:hover{color:var(--amber)}

/* ---------- scope split ---------- */
.scope-figure{
  position:relative;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);
  background:var(--ink-700);
}
.scope-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;transition:transform .3s var(--ease)}
.scope-figure:hover img{transform:scale(1.02)}
.scope-note{
  margin-top:18px;padding:16px 18px;border-left:3px solid var(--cyan);border-radius:0 var(--r-xs) var(--r-xs) 0;
  background:rgba(43,217,199,.08);font-size:13px;color:var(--text-2);line-height:1.8;
}
.scope-list{display:grid;gap:14px;margin-top:22px}
.scope-list li{
  display:flex;gap:14px;padding:16px 18px;border:1px solid var(--line);border-radius:var(--r-xs);
  background:var(--glass-2);transition:all .2s var(--ease);
}
.scope-list li:hover{border-color:var(--line-amber);background:rgba(245,165,36,.05)}
.scope-list .dot-ic{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--amber);background:rgba(245,165,36,.08);
}
.scope-list h3{font-size:15px;font-weight:600;margin-bottom:4px}
.scope-list p{font-size:13px;color:var(--text-2);line-height:1.75}

/* ---------- form ---------- */
.apply-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
}
.apply-tip{
  margin-bottom:20px;padding:14px 16px;border-radius:var(--r-xs);
  border:1px solid var(--line-amber);background:rgba(245,165,36,.08);color:var(--amber-hi);font-size:13px;line-height:1.8;
}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:#0A1220;border:1px solid var(--line);border-radius:var(--r-xs);
  padding:13px 14px;font-size:14px;color:var(--text);font-family:inherit;line-height:1.5;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input,.field select{height:48px}
.field textarea{min-height:110px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--amber);box-shadow:0 0 0 3px rgba(245,165,36,.18);
}
.field .hint{font-size:12px;color:var(--text-3);margin-top:6px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ---------- assurance strip ---------- */
.assure{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--glass);
  overflow:hidden;box-shadow:var(--shadow);
}
.assure > div{padding:22px 20px;border-left:1px solid var(--line)}
.assure > div:first-child{border-left:0}
.assure .ic{color:var(--amber);margin-bottom:10px;display:block}
.assure h4{font-size:14px;font-weight:700;margin-bottom:4px}
.assure p{font-size:12px;color:var(--text-3);line-height:1.7}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 44px 20px 16px;font-size:16px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:2px;
  background:var(--amber);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item summary::after{
  content:"";position:absolute;right:14px;top:50%;width:12px;height:12px;
  transform:translateY(-50%);border-right:1.6px solid var(--text-2);border-bottom:1.6px solid var(--text-2);
  transition:transform .2s var(--ease);
}
.faq-item[open] summary{color:var(--amber)}
.faq-item[open] summary::before{opacity:1}
.faq-item[open] summary::after{border-color:var(--amber);transform:translateY(-50%) rotate(-135deg)}
.faq-item summary:hover{color:var(--amber-hi);background:rgba(255,255,255,.03)}
.faq-body{padding:0 44px 22px 16px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--glass);padding:44px;box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;left:-120px;top:-140px;width:460px;height:380px;
  background:radial-gradient(circle at 50% 50%,rgba(245,165,36,.22),transparent 68%);pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);line-height:1.35;position:relative}
.cta-band p{margin-top:10px;font-size:14px;color:var(--text-2);position:relative;max-width:60ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative}

/* ---------- footer ---------- */
.site-foot{background:var(--ink-800);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{font-size:13px;color:var(--text-2);line-height:1.85;max-width:34ch}
.foot-brand .foot-domain{font-size:12px;color:var(--text-3);margin-top:14px;letter-spacing:.04em}
.foot-social{display:flex;gap:10px;margin-top:16px}
.foot-social a{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:all .2s var(--ease);
}
.foot-social a:hover{color:var(--amber);border-color:var(--line-amber);background:rgba(245,165,36,.08)}
.foot-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text)}
.foot-col ul{display:grid;gap:10px}
.foot-col a{font-size:13px;color:var(--text-2);line-height:1.6}
.foot-col a:hover{color:var(--amber)}
.foot-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bottom p,.foot-bottom a{font-size:12px;color:var(--text-3)}
.foot-bottom a:hover{color:var(--text-2)}
.foot-legal{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(5,8,14,.98);
  display:flex;flex-direction:column;padding:24px;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:transparent;
  color:var(--text);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.drawer-list{display:flex;flex-direction:column;margin-top:12px;overflow-y:auto;flex:1}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;border-bottom:1px solid var(--line);font-size:16px;color:var(--text-2);
}
.drawer-list a.is-active{color:var(--amber);font-weight:700}
.drawer-list a::after{content:"›";font-size:20px;color:var(--text-3)}
.drawer-cta{margin-top:18px}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .nav-chips{display:none}
  .burger{display:inline-flex;align-items:center;justify-content:center}
  .nav-in{height:64px}
  .sec{padding:72px 0}
  .plan-grid{grid-template-columns:1fr;gap:16px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .assure{grid-template-columns:1fr 1fr}
  .assure > div:nth-child(3){border-left:0;border-top:1px solid var(--line)}
  .assure > div:nth-child(4){border-top:1px solid var(--line)}
}
@media screen and (max-width:767px){
  .container{padding:0 16px}
  .topbar-in .tb-l span:nth-child(2){display:none}
  .nav-right .icon-btn{display:none}
  .hero-body{padding:52px 0 46px}
  .hero-actions .btn{width:100%}
  .hero-facts span{padding:0 12px;font-size:12px}
  .hero-facts span:nth-child(3){padding-left:0;border-left:0;margin-top:8px}
  .sec{padding:52px 0}
  .plan-grid{
    display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;
    padding-bottom:8px;margin:0 -16px;padding-left:16px;padding-right:16px;
  }
  .plan-card{flex:0 0 84%;scroll-snap-align:start}
  .apply-card{padding:20px}
  .form-row{grid-template-columns:1fr;gap:0}
  .cta-band{padding:26px;gap:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .faq-item summary{font-size:15px;padding-right:38px}
  .faq-body{padding-right:18px}
  .btn{min-height:48px}
  .cmp-table{min-width:700px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .btn:hover,.plan-card:hover,.scope-figure:hover img{transform:none!important;box-shadow:none!important}
}
@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){
  .main-nav,.topbar,.nav-chips,.plan-card,.apply-card{background:#101828}
}