/* roulang page: index */
:root{
  --bg-deep:#070B1B;
  --bg-base:#0B1226;
  --bg-elev:#121A33;
  --line:rgba(140,160,220,.14);
  --line-strong:rgba(160,180,255,.16);
  --primary:#7C6BFF;
  --primary-hover:#9587FF;
  --primary-active:#6656E0;
  --accent:#3FD9C8;
  --star:#FFC96B;
  --text:#E9EDFA;
  --text-2:#A7B1CE;
  --text-3:#6F7A99;
  --danger:#FF6B6B;
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;
  --shadow:0 12px 32px rgba(3,6,20,.45);
  --glow:0 0 0 1px rgba(124,107,255,.6),0 8px 28px rgba(124,107,255,.35);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg-base);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 18%, rgba(233,237,250,.55), transparent 60%),
    radial-gradient(1.2px 1.2px at 68% 9%, rgba(233,237,250,.4), transparent 60%),
    radial-gradient(1.6px 1.6px at 82% 42%, rgba(63,217,200,.45), transparent 60%),
    radial-gradient(1.2px 1.2px at 34% 66%, rgba(233,237,250,.35), transparent 60%),
    radial-gradient(1.4px 1.4px at 55% 88%, rgba(255,201,107,.35), transparent 60%),
    radial-gradient(1.1px 1.1px at 91% 76%, rgba(233,237,250,.3), transparent 60%);
  opacity:.06;
}
body::after{
  content:"";
  position:fixed;
  top:-20%;
  left:-30%;
  width:80%;
  height:120%;
  pointer-events:none;
  z-index:0;
  background:radial-gradient(closest-side,rgba(124,107,255,.18),transparent 72%),
             radial-gradient(closest-side,rgba(63,217,200,.14),transparent 70%);
  filter:blur(20px);
  animation:aurora 22s ease-in-out infinite alternate;
}
@keyframes aurora{
  0%{transform:translate3d(0,0,0) scale(1);}
  100%{transform:translate3d(26%,8%,0) scale(1.15);}
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* Layout */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-alt{background:var(--bg-deep);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.02em;color:var(--accent);
  text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent);display:block;}
h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:0;}
h2{font-size:32px;line-height:1.3;font-weight:600;letter-spacing:0;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
.section-desc{color:var(--text-2);font-size:16px;line-height:1.8;margin-top:14px;}

/* Buttons */
.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .22s ease-out,background-color .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out,color .22s ease-out;
}
.btn::after{
  content:"";position:absolute;top:0;left:0;width:100%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.32),transparent);
  transform:translateX(-130%);transition:transform .3s ease-out;pointer-events:none;
}
.btn:hover::after{transform:translateX(130%);}
.btn-primary{background:var(--primary);color:#0A0E1F;box-shadow:var(--glow);}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);}
.btn-primary:active{background:var(--primary-active);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(63,217,200,.55);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn-sm{height:34px;padding:0 16px;font-size:13px;border-radius:10px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-size:14px;font-weight:600;
}
.link-arrow:hover{color:#5FEBD9;}
.link-arrow:hover span{transform:translateX(3px);}
.link-arrow span{transition:transform .2s ease-out;}

/* Badges */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;line-height:1;font-weight:500;white-space:nowrap;
  border:1px solid rgba(63,217,200,.5);
  background:rgba(63,217,200,.08);
  color:var(--accent);
}
.badge-purple{border-color:rgba(124,107,255,.55);background:rgba(124,107,255,.12);color:#B9AFFF;}
.badge-star{border-color:rgba(255,201,107,.6);background:rgba(255,201,107,.1);color:var(--star);}
.badge-muted{border-color:var(--line-strong);background:rgba(160,180,255,.06);color:var(--text-2);}

/* Top bar */
.topbar{
  background:#05081a;
  font-size:12.5px;
  line-height:1;
  color:var(--text-3);
  border-bottom:1px solid rgba(140,160,220,.08);
  position:relative;z-index:60;
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:36px;padding:0 24px;max-width:var(--container);margin:0 auto;
}
.topbar-left{font-family:var(--mono);letter-spacing:.02em;color:var(--text-3);}
.topbar-mid{display:flex;align-items:center;gap:8px;color:var(--text-2);}
.topbar-mid .dot{
  width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 3px rgba(63,217,200,.15);
}
.topbar-right{display:flex;align-items:center;gap:18px;}
.topbar-right a{color:var(--text-2);}
.topbar-right a:hover{color:var(--accent);}
.topbar-right .divider{width:1px;height:12px;background:rgba(140,160,220,.22);}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,18,38,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-strong);
  transition:background-color .25s ease-out,box-shadow .25s ease-out;
}
.site-header.scrolled{
  background:rgba(7,11,27,.94);
  box-shadow:0 10px 30px rgba(3,6,20,.55);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:68px;max-width:var(--container);margin:0 auto;padding:0 24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:600;color:var(--text);}
.logo-mark{display:inline-flex;color:var(--primary);}
.logo:hover .logo-mark{color:var(--primary-hover);}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-item{position:relative;}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  height:38px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);position:relative;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  border-radius:2px;transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease-out;box-shadow:0 0 12px rgba(124,107,255,.7);
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-item.active .nav-link{color:var(--text);}
.nav-item.active .nav-link::after{transform:scaleX(1);}
.nav-panel{
  position:absolute;top:calc(100% + 10px);left:0;
  width:440px;padding:20px;
  display:grid;grid-template-columns:1fr 1fr;gap:8px 24px;
  background:rgba(14,21,43,.96);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line-strong);border-radius:var(--r-card);
  box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
}
.nav-item.has-panel:hover .nav-panel,
.nav-item.has-panel:focus-within .nav-panel{opacity:1;visibility:visible;transform:translateY(0);}
.panel-col{display:flex;flex-direction:column;gap:2px;}
.panel-title{font-size:12px;color:var(--text-3);margin:0 0 8px;font-weight:600;}
.panel-col a{
  display:block;padding:8px 10px;border-radius:8px;
  font-size:14px;color:var(--text-2);
}
.panel-col a:hover{background:rgba(124,107,255,.12);color:var(--text);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid var(--line-strong);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* Drawer */
.drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(5,8,26,.98);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  transform:translateX(100%);transition:transform .3s ease-out;
  display:flex;flex-direction:column;padding:0 20px 24px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:68px;flex:0 0 auto;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;color:var(--text);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:12px;flex:1 1 auto;}
.drawer-nav > a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 14px;border-radius:12px;
  font-size:16px;color:var(--text-2);border:1px solid transparent;
}
.drawer-nav > a:hover,.drawer-nav > a.active{
  color:var(--text);background:rgba(124,107,255,.12);border-color:rgba(124,107,255,.32);
}
.drawer-sub{display:flex;flex-direction:column;gap:2px;padding:0 0 8px 14px;}
.drawer-sub a{min-height:46px;display:flex;align-items:center;font-size:14px;color:var(--text-3);}
.drawer-sub a:hover{color:var(--accent);}
.drawer-foot{display:flex;flex-direction:column;gap:12px;padding-top:20px;border-top:1px solid var(--line);}

/* Hero */
.hero{position:relative;padding:76px 0 88px;overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,11,27,.92) 0%,rgba(7,11,27,.78) 46%,rgba(11,18,38,.7) 100%);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{margin:18px 0 0;max-width:15em;}
.hero-sub{color:var(--text-2);font-size:17px;line-height:1.8;margin-top:20px;max-width:34em;}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
.trust{
  display:flex;gap:36px;margin-top:44px;padding-top:24px;
  border-top:1px solid var(--line);flex-wrap:wrap;
}
.trust li{display:flex;flex-direction:column;gap:4px;}
.trust b{font-family:var(--mono);font-size:22px;font-weight:600;color:var(--text);line-height:1.2;}
.trust span{font-size:12.5px;color:var(--text-3);}
.hero-visual{position:relative;}
.visual-frame{
  position:relative;border-radius:20px;overflow:hidden;
  aspect-ratio:4/3.35;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
}
.visual-frame::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(7,11,27,.72),rgba(7,11,27,.62));
}
.visual-frame::after{
  content:"";position:absolute;inset:-40% -20% auto auto;width:70%;height:70%;
  background:radial-gradient(closest-side,rgba(63,217,200,.28),transparent 70%);
  filter:blur(18px);
}
.visual-badge{
  position:absolute;top:16px;right:16px;z-index:3;
  height:26px;padding:0 12px;display:inline-flex;align-items:center;
  border-radius:var(--r-pill);font-size:12px;color:var(--star);
  border:1px solid rgba(255,201,107,.6);background:rgba(255,201,107,.12);
}
.glass-card{
  background:rgba(18,26,51,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(160,180,255,.16);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
}
.float-card{position:absolute;z-index:2;padding:18px 20px;}
.card-a{left:8%;top:14%;width:min(268px,72%);}
.card-b{right:6%;bottom:12%;width:min(300px,76%);}
.mini-label{font-size:12px;color:var(--text-3);}
.metric{font-size:34px;font-weight:600;line-height:1.2;margin-top:6px;color:var(--text);}
.bar{height:6px;border-radius:99px;background:rgba(160,180,255,.14);margin-top:12px;overflow:hidden;}
.bar span{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--accent));}
.mini-text{font-size:14px;color:var(--text-2);margin-top:6px;}
.avatars{display:flex;gap:-8px;margin-top:14px;}
.avatars i{
  width:28px;height:28px;border-radius:50%;margin-right:-8px;
  border:2px solid rgba(11,18,38,.9);
  background:linear-gradient(140deg,#7C6BFF,#3FD9C8);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;font-style:normal;color:#0A0E1F;font-weight:600;
}
.avatars i:nth-child(2){background:linear-gradient(140deg,#3FD9C8,#FFC96B);}
.avatars i:nth-child(3){background:linear-gradient(140deg,#FFC96B,#7C6BFF);}

/* Value strip */
.value-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.value-item{padding:32px 26px;border-left:1px solid var(--line);}
.value-item:first-child{border-left:none;}
.value-item .num{font-family:var(--mono);font-size:13px;color:var(--primary);letter-spacing:.06em;}
.value-item h3{font-size:17px;margin-top:12px;}
.value-item p{margin-top:8px;font-size:14.5px;color:var(--text-2);line-height:1.7;}

/* Feature groups */
.feature-group + .feature-group{margin-top:72px;}
.feature-layout{display:grid;grid-template-columns:2fr 1fr;gap:24px;margin-top:36px;align-items:start;}
.feature-main{
  background:var(--bg-elev);border:1px solid var(--line-strong);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.feature-main:hover{transform:translateY(-4px);border-color:rgba(124,107,255,.45);box-shadow:var(--shadow);}
.feature-main img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line);transition:filter .25s ease-out;}
.feature-main:hover img{filter:brightness(1.08);}
.feature-main-body{padding:26px;}
.feature-main-body h3{font-size:22px;}
.feature-main-body p{color:var(--text-2);font-size:15px;line-height:1.8;margin:12px 0 18px;}
.feature-side{display:flex;flex-direction:column;gap:16px;}
.feature-mini{
  display:flex;gap:14px;padding:20px;
  background:var(--bg-elev);border:1px solid var(--line-strong);border-radius:var(--r-card);
  transition:transform .22s ease-out,border-color .22s ease-out;
}
.feature-mini:hover{transform:translateY(-4px);border-color:rgba(63,217,200,.4);}
.mini-ico{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(124,107,255,.14);border:1px solid rgba(124,107,255,.34);color:#B9AFFF;
}
.feature-mini h3{font-size:16px;}
.feature-mini p{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.7;}

/* Scenes */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.scene-card{
  display:flex;flex-direction:column;gap:12px;padding:24px;
  background:var(--bg-elev);border:1px solid var(--line-strong);border-radius:var(--r-card);
  min-height:100%;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(124,107,255,.45);box-shadow:var(--shadow);}
.scene-card h3{font-size:18px;margin-top:2px;}
.scene-card p{font-size:14.5px;color:var(--text-2);line-height:1.75;}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);}
.tag{
  font-size:12px;color:var(--text-3);border:1px solid var(--line-strong);
  border-radius:var(--r-pill);padding:3px 10px;line-height:1.5;
}

/* Cases */
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.case-row + .case-row{margin-top:72px;}
.case-row.reverse .case-media{order:2;}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line-strong);transition:filter .25s ease-out;}
.case-media img:hover{filter:brightness(1.08);}
.case-body h3{font-size:24px;margin-top:14px;}
.case-body p{color:var(--text-2);font-size:15.5px;line-height:1.85;margin-top:14px;}
.case-stats{display:flex;gap:40px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);flex-wrap:wrap;}
.case-stats div{display:flex;flex-direction:column;gap:4px;}
.case-stats b{font-family:var(--mono);font-size:28px;font-weight:600;color:var(--accent);line-height:1.15;}
.case-stats span{font-size:12.5px;color:var(--text-3);}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{
  background:rgba(18,26,51,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(160,180,255,.16);
  border-radius:var(--r-card);
  padding:28px 26px;
  display:flex;flex-direction:column;gap:16px;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.price-card:hover{transform:translateY(-4px);border-color:rgba(124,107,255,.5);box-shadow:var(--shadow);}
.price-card.featured{
  transform:translateY(-14px);
  border-color:rgba(124,107,255,.6);
  box-shadow:0 0 0 1px rgba(124,107,255,.35),0 20px 46px rgba(3,6,20,.6);
}
.price-card.featured:hover{transform:translateY(-18px);}
.price-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.price-name{font-size:18px;font-weight:600;}
.price-num{display:flex;align-items:baseline;gap:6px;}
.price-num b{font-family:var(--mono);font-size:38px;font-weight:600;line-height:1;}
.price-num small{font-size:13px;color:var(--text-3);}
.price-note{font-size:14px;color:var(--text-2);line-height:1.7;}
.price-list{display:flex;flex-direction:column;gap:10px;margin:4px 0 6px;}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.6;}
.price-list li::before{
  content:"✓";flex:0 0 auto;width:18px;height:18px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;margin-top:3px;
  font-size:11px;color:var(--accent);border:1px solid rgba(63,217,200,.5);background:rgba(63,217,200,.1);
}
.price-list li.off{opacity:.45;text-decoration:line-through;}
.price-list li.off::before{content:"–";color:var(--text-3);border-color:var(--line-strong);background:transparent;}
.compare{margin-top:36px;border:1px solid var(--line);border-radius:var(--r-card);background:rgba(18,26,51,.4);}
.compare summary{
  min-height:56px;display:flex;align-items:center;justify-content:space-between;
  padding:0 22px;cursor:pointer;font-size:15px;color:var(--text);list-style:none;
}
.compare summary::-webkit-details-marker{display:none;}
.compare summary::after{content:"＋";color:var(--accent);font-size:16px;}
.compare[open] summary::after{content:"－";}
.compare-body{padding:0 22px 22px;border-top:1px solid var(--line);}
.compare-row{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--text-2);}
.compare-row:last-child{border-bottom:none;}
.compare-row.head{color:var(--text);font-weight:600;}

/* News */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  background:var(--bg-elev);border:1px solid var(--line-strong);border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(124,107,255,.45);box-shadow:var(--shadow);}
.news-thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);background:rgba(124,107,255,.08);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:filter .25s ease-out;}
.news-card:hover .news-thumb img{filter:brightness(1.08);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.news-body h3{
  font-size:18px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-summary{
  font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}
.news-meta .arrow{color:var(--accent);font-size:15px;transition:transform .2s ease-out;}
.news-card:hover .news-meta .arrow{transform:translateX(4px);}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:rgba(18,26,51,.4);
  padding:56px 24px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state .star-dot{
  width:14px;height:14px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 6px rgba(63,217,200,.12);animation:pulse 2.6s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:.5;transform:scale(.86);}50%{opacity:1;transform:scale(1);}}
.empty-state p{color:var(--text-2);font-size:15px;}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item summary{
  min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  cursor:pointer;font-size:16.5px;font-weight:600;color:var(--text);list-style:none;
  padding:0 34px 0 0;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"＋";position:absolute;right:2px;top:50%;transform:translateY(-50%);
  color:var(--accent);font-size:16px;font-weight:400;
}
.faq-item[open] summary::after{content:"－";}
.faq-item summary::before{
  content:"";position:absolute;left:-14px;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));opacity:0;transition:opacity .26s ease-out;
}
.faq-item[open] summary::before{opacity:1;}
.faq-answer{padding:0 34px 20px 0;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-item details, .faq-item[open] .faq-answer{animation:none;}

/* CTA */
.cta-band{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--line-strong);
  background-image:url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
  padding:64px 56px;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(110deg,rgba(7,11,27,.86),rgba(11,18,38,.66));
}
.cta-band::after{
  content:"";position:absolute;right:-10%;top:-40%;width:60%;height:160%;
  background:radial-gradient(closest-side,rgba(124,107,255,.3),transparent 70%);
  filter:blur(24px);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{max-width:16em;}
.cta-inner p{color:var(--text-2);margin-top:12px;max-width:34em;font-size:15.5px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* Footer */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);margin-top:96px;padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:30em;}
.footer-domain{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  font-family:var(--mono);font-size:13px;color:var(--text-3);
}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:var(--text-2);display:inline-block;}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);
  padding:22px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom nav a:hover{color:var(--accent);}

/* Reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.in{opacity:1;transform:none;}

/* Responsive */
@media (max-width:1279px){
  .scene-grid{grid-template-columns:repeat(3,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  h1{font-size:40px;}
}
@media (max-width:1023px){
  .nav-menu,.nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-primary{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero{padding:56px 0 64px;}
  .value-strip{grid-template-columns:repeat(2,1fr);}
  .value-item:nth-child(3){border-left:none;}
  .value-item:nth-child(n+3){border-top:1px solid var(--line);}
  .feature-layout{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .case-row{grid-template-columns:1fr;gap:28px;}
  .case-row.reverse .case-media{order:0;}
  .pricing-grid{grid-template-columns:1fr;gap:20px;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-4px);}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  h1{font-size:32px;}
  h2{font-size:25px;}
  h3{font-size:18px;}
  .section{padding:56px 0;}
  .topbar-mid{display:none;}
  .topbar-right a:first-child{display:none;}
  .hero-actions .btn{width:100%;}
  .trust{gap:24px;}
  .value-strip{grid-template-columns:1fr;}
  .value-item{border-left:none;border-top:1px solid var(--line);padding:26px 0;}
  .value-item:first-child{border-top:none;padding-top:0;}
  .scene-grid,.news-grid{grid-template-columns:1fr;gap:20px;}
  .section-head.row{flex-direction:column;align-items:flex-start;gap:14px;}
  .cta-band{padding:40px 24px;}
  .cta-actions .btn{width:100%;}
  .compare-row{grid-template-columns:1.4fr 1fr 1fr 1fr;font-size:12.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .feature-main-body,.scene-card,.news-body,.price-card{padding:18px;}
  .metric{font-size:28px;}
  .float-card{position:static;width:100%;margin-top:14px;}
  .visual-frame{aspect-ratio:auto;min-height:260px;padding:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --bg-deep:#070B1B;
  --bg-base:#0B1226;
  --bg-elev:#121A33;
  --line:rgba(140,160,220,.14);
  --line-strong:rgba(160,180,255,.16);
  --primary:#7C6BFF;
  --primary-hover:#9587FF;
  --primary-active:#6656E0;
  --accent:#3FD9C8;
  --star:#FFC96B;
  --danger:#FF6B6B;
  --text:#E9EDFA;
  --text-2:#A7B1CE;
  --text-3:#6F7A99;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow:0 12px 32px rgba(3,6,20,.45);
  --shadow-lg:0 24px 60px rgba(3,6,20,.55);
  --glow:0 0 0 1px rgba(124,107,255,.6),0 8px 28px rgba(124,107,255,.35);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;position:relative;
  background:var(--bg-deep);color:var(--text);
  font-family:var(--font);font-size:16px;line-height:1.75;letter-spacing:.008em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(1100px 620px at 84% -12%,rgba(124,107,255,.20),transparent 62%),
    radial-gradient(920px 540px at -12% 16%,rgba(63,217,200,.13),transparent 60%),
    linear-gradient(180deg,#070B1B 0%,#0B1226 46%,#070B1B 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(rgba(233,237,250,.95) 1px,transparent 1px);
  background-size:140px 140px;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(124,107,255,.35);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:2}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ========== 顶部信息条 ========== */
.topbar{background:#050813;border-bottom:1px solid var(--line);font-size:12.5px;line-height:1}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:36px}
.topbar-domain{color:var(--text-3);font-family:var(--mono);letter-spacing:.02em}
.topbar-note{color:var(--text-2);display:flex;align-items:center;gap:8px;flex:1;justify-content:center}
.topbar-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(63,217,200,.9);animation:twinkle 3s ease-in-out infinite}
.topbar-actions{display:flex;align-items:center;gap:18px}
.topbar-actions a{color:var(--text-2)}
.topbar-actions a:hover{color:var(--accent)}

/* ========== 主导航 ========== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(9,14,32,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-strong);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(7,11,27,.94);box-shadow:0 10px 30px rgba(3,6,20,.6)}
.nav-inner{
  width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:28px;
}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:600;color:var(--text);letter-spacing:.01em}
.logo-mark{display:inline-flex;color:var(--primary);transition:transform .3s ease}
.logo:hover .logo-mark{transform:rotate(-14deg)}
.logo:hover{color:var(--text)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1}
.nav-item{position:relative}
.nav-link{
  position:relative;display:block;padding:10px 14px;font-size:15px;color:var(--text-2);border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transform-origin:left center;transition:transform .2s ease-out;
}
.nav-item:hover>.nav-link,.nav-item.active>.nav-link{color:var(--text)}
.nav-item:hover>.nav-link::after,.nav-item.active>.nav-link::after{transform:scaleX(1)}
.nav-item.active>.nav-link{color:#fff;text-shadow:0 0 14px rgba(124,107,255,.55)}
.nav-panel{
  position:absolute;top:calc(100% + 14px);left:-8px;min-width:440px;padding:18px;
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
  background:rgba(14,20,42,.96);border:1px solid var(--line-strong);border-radius:var(--radius-card);
  box-shadow:var(--shadow-lg);backdrop-filter:blur(14px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.nav-item.has-panel:hover .nav-panel,.nav-item.has-panel:focus-within .nav-panel{opacity:1;visibility:visible;transform:translateY(0)}
.panel-title{font-size:12px;color:var(--text-3);text-transform:none;margin-bottom:10px;letter-spacing:.04em}
.panel-col a{display:block;font-size:14px;color:var(--text-2);padding:6px 0;line-height:1.5}
.panel-col a:hover{color:var(--accent);transform:translateX(2px)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line-strong);cursor:pointer;color:var(--text);
}
.nav-toggle:hover{border-color:rgba(63,217,200,.55);color:var(--accent)}

/* ========== 按钮 ========== */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:500;cursor:pointer;overflow:hidden;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,border-color .22s ease-out,color .22s;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--primary);color:#0A0E20;font-weight:600;box-shadow:var(--glow)}
.btn-primary::before{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.42),transparent);transition:left .3s ease-out;
}
.btn-primary:hover{background:var(--primary-hover);color:#070B1B;transform:translateY(-2px)}
.btn-primary:hover::before{left:120%}
.btn-primary:active{background:var(--primary-active)}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(63,217,200,.5)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:0 8px 24px rgba(63,217,200,.18)}
.btn-primary:focus-visible,.btn-ghost:focus-visible,.nav-toggle:focus-visible,.btn-link:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;
}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-link{background:none;border:0;padding:0;color:var(--accent);font-size:14.5px;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.btn-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ========== 移动端抽屉 ========== */
.drawer{
  position:fixed;inset:0;z-index:120;background:rgba(6,9,22,.98);
  backdrop-filter:blur(8px);display:flex;flex-direction:column;
  transform:translateY(-100%);transition:transform .32s ease;visibility:hidden;
}
.drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:12px;background:transparent;border:1px solid var(--line-strong);color:var(--text);cursor:pointer}
.drawer-body{flex:1;overflow-y:auto;padding:12px 20px 24px}
.drawer-link{display:flex;align-items:center;min-height:52px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line)}
.drawer-link:hover{color:var(--accent)}
.drawer-sub{padding:6px 0 14px 2px}
.drawer-sub a{display:block;min-height:44px;line-height:44px;font-size:14px;color:var(--text-2)}
.drawer-foot{padding:16px 20px 28px;border-top:1px solid var(--line);display:grid;gap:12px}
.drawer-foot .btn{width:100%;height:50px}

/* ========== 阅读进度 ========== */
.read-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:130;background:linear-gradient(90deg,var(--primary),var(--accent));box-shadow:0 0 10px rgba(63,217,200,.6)}

/* ========== 文章头部 ========== */
.article-hero{
  position:relative;padding:44px 0 40px;
  background-image:linear-gradient(180deg,rgba(7,11,27,.72),rgba(7,11,27,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(700px 340px at 88% 0%,rgba(124,107,255,.22),transparent 65%);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap;margin-bottom:20px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.55}
.crumb .current{color:var(--text-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;line-height:1;border:1px solid rgba(63,217,200,.45);background:rgba(63,217,200,.08);color:var(--accent);
}
.badge-gold{border-color:rgba(255,201,107,.5);background:rgba(255,201,107,.1);color:var(--star)}
.article-hero h1{
  margin:16px 0 18px;font-size:38px;line-height:1.25;font-weight:600;letter-spacing:.005em;max-width:22ch;
  background:linear-gradient(120deg,#FFFFFF 12%,#D9D6FF 62%,#9FE6DD 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.article-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
.article-meta span.dot{opacity:.5}
.article-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}
.icon-group{display:flex;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);background:rgba(18,26,51,.6);color:var(--text-2);cursor:pointer;
  transition:color .2s,border-color .2s,transform .2s;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(63,217,200,.55);transform:translateY(-2px)}

/* ========== 文章布局 ========== */
.article-main{padding:56px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.panel{
  background:var(--bg-elev);border:1px solid var(--line-strong);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);
}
.article-body{max-width:820px;font-size:17.5px;line-height:1.9;color:#DDE3F5}
.article-body>p:first-of-type{font-size:18px;color:var(--text)}
.prose p{margin:0 0 20px}
.prose h2{
  position:relative;margin:44px 0 18px;padding-left:16px;font-size:26px;line-height:1.35;font-weight:600;color:#fff;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.prose h3{margin:32px 0 14px;font-size:20px;line-height:1.45;font-weight:600;color:#fff}
.prose h4{margin:24px 0 12px;font-size:17px;font-weight:600;color:#fff}
.prose a{color:var(--accent);border-bottom:1px dashed rgba(63,217,200,.5)}
.prose a:hover{color:#7ff0e2}
.prose strong{color:#fff;font-weight:600}
.prose blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--accent);
  background:rgba(63,217,200,.08);border-radius:0 12px 12px 0;color:var(--text-2);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose ul,.prose ol{margin:0 0 20px;padding-left:2px}
.prose ul li{position:relative;padding-left:22px;margin-bottom:10px}
.prose ul li::before{content:"";position:absolute;left:4px;top:13px;width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(63,217,200,.7)}
.prose ol{counter-reset:li}
.prose ol li{position:relative;padding-left:28px;margin-bottom:10px;counter-increment:li}
.prose ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:2px;
  font-family:var(--mono);font-size:13px;color:var(--primary);
}
.prose img{border-radius:var(--radius-img);border:1px solid var(--line-strong);margin:24px auto;height:auto}
.prose figure{margin:24px 0}
.prose figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--text-3)}
.prose pre{
  margin:24px 0;padding:16px;border-radius:12px;overflow-x:auto;
  background:#050813;border:1px solid var(--line-strong);
  font-family:var(--mono);font-size:14px;line-height:1.7;color:#CFE7FF;
}
.prose code{font-family:var(--mono);font-size:.9em;background:rgba(124,107,255,.14);padding:2px 6px;border-radius:6px;color:#D6CFFF}
.prose pre code{background:none;padding:0;color:inherit}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto}
.prose th{background:var(--bg-elev);color:#fff;font-weight:600;border-bottom:1px solid var(--line-strong);text-align:left;padding:12px 14px;white-space:nowrap}
.prose td{padding:12px 14px;border-bottom:1px dashed var(--line);color:var(--text-2)}
.prose hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.prose>*:first-child{margin-top:0}

/* ========== 空态 ========== */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;
  padding:56px 24px;border:1px dashed var(--line-strong);border-radius:var(--radius-card);background:rgba(18,26,51,.5);
}
.empty-state .star-dot{
  width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(124,107,255,.16);color:var(--primary);animation:twinkle 3s ease-in-out infinite;
}
.empty-state h2{font-size:20px;font-weight:600;color:#fff}
.empty-state p{color:var(--text-2);font-size:15px;max-width:44ch}

/* ========== 侧栏 ========== */
.article-side{position:sticky;top:96px;display:grid;gap:20px;width:300px}
.side-card{background:var(--bg-elev);border:1px solid var(--line-strong);border-radius:var(--radius-card);padding:20px}
.side-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(124,107,255,.9)}
.side-nav a{
  position:relative;display:block;font-size:14px;color:var(--text-2);padding:9px 0 9px 14px;border-left:2px solid var(--line);
  transition:color .2s,border-color .2s,padding-left .2s;
}
.side-nav a:hover{color:var(--accent);border-color:var(--accent);padding-left:18px}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;
  border:1px solid var(--line-strong);background:rgba(18,26,51,.7);color:var(--text-2);
}
a.tag:hover{color:var(--accent);border-color:rgba(63,217,200,.5)}
.side-related{display:grid;gap:14px}
.side-related a{display:grid;grid-template-columns:56px 1fr;gap:12px;align-items:center}
.side-related img{width:56px;height:56px;object-fit:cover;border-radius:10px;border:1px solid var(--line-strong)}
.side-related strong{display:block;font-size:14px;font-weight:500;color:var(--text);line-height:1.5}
.side-related em{font-size:12px;color:var(--text-3);font-style:normal}
.side-related a:hover strong{color:var(--accent)}

/* ========== 互动区 / 标签行 ========== */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.foot-label{font-size:13px;color:var(--text-3);margin-bottom:12px}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.pager-card{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;border-radius:var(--radius-card);
  background:var(--bg-elev);border:1px solid var(--line-strong);transition:transform .22s ease-out,border-color .22s;
}
.pager-card:hover{transform:translateY(-4px);border-color:rgba(124,107,255,.55)}
.pager-card span{font-size:12px;color:var(--text-3)}
.pager-card strong{font-size:15px;font-weight:500;color:var(--text)}
.pager-card.wide{grid-column:span 2;align-items:center;flex-direction:row;justify-content:center;gap:12px}

/* ========== 相关推荐 ========== */
.related{padding:12px 0 80px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:30px;font-weight:600;line-height:1.3;color:#fff}
.section-head p{color:var(--text-2);font-size:15px;margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--bg-elev);border:1px solid var(--line-strong);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .22s ease-out,border-color .22s,box-shadow .22s;
}
.card:hover{transform:translateY(-4px);border-color:rgba(124,107,255,.55);box-shadow:var(--shadow)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#151E3C,#0B1226)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:filter .25s ease}
.card:hover .card-media img{filter:brightness(1.08)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;font-weight:600;line-height:1.45;color:#fff;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3)}
.card-meta .arrow{color:var(--accent);transition:transform .2s ease}
.card:hover .card-meta .arrow{transform:translateX(3px)}

/* ========== 底部 CTA ========== */
.cta-band{padding:0 0 96px}
.cta-card{
  position:relative;overflow:hidden;border-radius:20px;padding:52px;
  background-image:linear-gradient(120deg,rgba(9,14,32,.82),rgba(9,14,32,.66)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  border:1px solid var(--line-strong);box-shadow:var(--shadow-lg);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-card::after{
  content:"";position:absolute;top:-40%;right:-10%;width:520px;height:520px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(63,217,200,.22),transparent 70%);
}
.cta-text{max-width:56ch;position:relative;z-index:2}
.cta-text h2{font-size:30px;font-weight:600;color:#fff;margin-bottom:12px}
.cta-text p{color:var(--text-2);font-size:16px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ========== 页脚 ========== */
.site-footer{position:relative;z-index:2;background:#050813;border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{margin:16px 0 14px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:36ch}
.footer-domain{font-family:var(--mono);font-size:13px;color:var(--text-3)}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13.5px;color:var(--text-2);display:inline-block}
.footer-col a:hover{color:var(--accent);transform:translateX(-2px)}
.footer-bottom{
  margin-top:52px;padding:22px 0 28px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--accent)}

/* ========== 动效 ========== */
@keyframes twinkle{0%,100%{opacity:.45}50%{opacity:1}}
@keyframes aurora{0%{transform:translate3d(-4%,0,0) scale(1)}100%{transform:translate3d(4%,-3%,0) scale(1.06)}}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease-out,transform .6s ease-out}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ========== 响应式 ========== */
@media (max-width:1279px){
  .container,.nav-inner{max-width:100%;padding:0 24px}
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:32px}
  .article-side{width:288px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-ghost{display:none}
  .topbar-note{display:none}
  .article-hero{padding:32px 0 30px}
  .article-hero h1{font-size:31px;max-width:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;width:100%;grid-template-columns:repeat(2,minmax(0,1fr))}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cta-card{padding:36px 28px}
}
@media (max-width:767px){
  .container,.nav-inner{padding:0 20px}
  .article-main{padding:40px 0 56px}
  .article-hero h1{font-size:27px}
  .article-body{font-size:17px;line-height:1.85}
  .prose h2{font-size:22px;margin:36px 0 14px}
  .prose h3{font-size:18px}
  .article-head-row{flex-direction:column;align-items:flex-start;gap:18px}
  .article-side{grid-template-columns:minmax(0,1fr)}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:24px}
  .section-head h2{font-size:24px}
  .pager{grid-template-columns:minmax(0,1fr)}
  .pager-card.wide{grid-column:span 1}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:10px}
  .footer-col{border-bottom:1px solid var(--line);padding:14px 0}
  .footer-col h4{margin-bottom:8px}
  .cta-card{padding:28px 20px}
  .cta-text h2{font-size:23px}
  .cta-actions{width:100%;display:grid;gap:12px}
  .cta-actions .btn{width:100%;height:50px}
  .badge{height:24px}
}
@media (max-width:480px){
  .article-hero h1{font-size:24px}
  .panel,.side-card,.card-body{padding:18px 16px}
  .topbar-inner{height:34px}
  .topbar-actions{gap:12px}
  .btn{padding:0 16px}
}

/* roulang page: category1 */
:root{
  --bg-deep:#070B1B;
  --bg-base:#0B1226;
  --bg-elev:#121A33;
  --line:rgba(140,160,220,.14);
  --line-strong:rgba(160,180,255,.16);
  --primary:#7C6BFF;
  --primary-hover:#9587FF;
  --primary-active:#6656E0;
  --accent:#3FD9C8;
  --star:#FFC96B;
  --text:#E9EDFA;
  --text-2:#A7B1CE;
  --text-3:#6F7A99;
  --danger:#FF6B6B;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow:0 12px 32px rgba(3,6,20,.45);
  --glow-primary:0 0 0 1px rgba(124,107,255,.6),0 8px 28px rgba(124,107,255,.35);
  --container:1200px;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(1.6px 1.6px at 18% 22%,rgba(233,237,250,.06),transparent 60%),
    radial-gradient(1.6px 1.6px at 68% 12%,rgba(233,237,250,.05),transparent 60%),
    radial-gradient(1.6px 1.6px at 42% 78%,rgba(233,237,250,.05),transparent 60%),
    radial-gradient(1.6px 1.6px at 88% 62%,rgba(233,237,250,.06),transparent 60%);
  background-size:520px 520px,640px 640px,700px 700px,580px 580px;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,opacity .2s ease}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{font-weight:600;line-height:1.25}
p{color:var(--text-2)}
::selection{background:rgba(124,107,255,.35);color:#fff}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{position:relative;padding:96px 0;z-index:1}
.section--tight{padding:72px 0}
.section--alt{background:var(--bg-base)}
.section--deep{background:var(--bg-deep)}

/* ============ 顶部信息条 ============ */
.topbar{background:#050814;border-bottom:1px solid var(--line);font-size:12.5px;color:var(--text-3);position:relative;z-index:70}
.topbar-inner{max-width:var(--container);margin:0 auto;padding:0 24px;height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px;line-height:1}
.topbar-domain{font-family:var(--mono);font-size:12.5px;letter-spacing:.05em;color:var(--text-2)}
.topbar-note{color:var(--text-3);overflow:hidden;white-space:nowrap;text-overflow:ellipsis;flex:1;text-align:center}
.topbar-links{display:flex;gap:18px;flex-shrink:0}
.topbar-links a{color:var(--text-2);font-size:12.5px}
.topbar-links a:hover{color:var(--accent)}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(9,14,30,.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-strong);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{background:rgba(7,11,27,.94);box-shadow:0 10px 30px rgba(3,6,20,.5)}
.nav-inner{max-width:var(--container);margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;gap:22px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:600;color:var(--text);letter-spacing:.01em;flex-shrink:0}
.logo-mark{color:var(--primary);display:inline-flex;transition:color .2s ease}
.logo:hover .logo-mark{color:var(--primary-hover)}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-item{position:relative}
.nav-link{display:inline-flex;align-items:center;height:68px;padding:0 14px;font-size:15px;color:var(--text-2);position:relative;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-item.active .nav-link{color:var(--text)}
.nav-item.active .nav-link::after{transform:scaleX(1)}
.nav-panel{
  position:absolute;top:calc(100% - 4px);left:50%;
  transform:translateX(-50%) translateY(8px);
  min-width:430px;display:grid;grid-template-columns:1fr 1fr;gap:6px 26px;
  padding:20px 22px;
  background:rgba(14,20,40,.97);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-strong);border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  opacity:0;visibility:hidden;
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.nav-item.has-panel:hover .nav-panel,.nav-item.has-panel:focus-within .nav-panel{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.panel-title{font-size:12px;color:var(--text-3);letter-spacing:.08em;font-weight:600;margin-bottom:8px}
.panel-col a{display:block;font-size:14px;color:var(--text-2);padding:7px 0}
.panel-col a:hover{color:var(--accent);transform:translateX(2px)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);align-items:center;justify-content:center;flex-direction:column;gap:5px;margin-left:auto}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;white-space:nowrap;
  position:relative;overflow:hidden;
  transition:background .2s ease,box-shadow .22s ease,transform .22s ease,border-color .2s ease,color .2s ease;
}
.btn::after{
  content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.28),transparent);
  transform:skewX(-18deg);transition:left .3s ease;
}
.btn:hover::after{left:120%}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-primary{background:var(--primary);color:#0A0E1F;font-weight:600;box-shadow:var(--glow-primary)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-active);transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid rgba(63,217,200,.55)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(63,217,200,.08)}
.btn-ghost:active{background:rgba(63,217,200,.14)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:25px;padding:0 11px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;
  color:var(--accent);border:1px solid rgba(63,217,200,.45);background:rgba(63,217,200,.08);
}
.badge-star{color:var(--star);border-color:rgba(255,201,107,.5);background:rgba(255,201,107,.09)}
.badge-mute{color:var(--text-2);border-color:var(--line-strong);background:rgba(167,177,206,.07)}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(140,160,220,.45)}
.breadcrumb .current{color:var(--text-2)}

/* ============ 分类首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 84px;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(7,11,27,.88),rgba(7,11,27,.62) 52%,rgba(11,18,38,.8));
}
.page-hero::after{
  content:"";position:absolute;right:-10%;top:-30%;width:760px;height:560px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(124,107,255,.16),transparent 70%);
}
.page-hero-inner{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:56px;align-items:center;margin-top:28px}
.page-hero h1{font-size:44px;font-weight:600;margin-bottom:18px;letter-spacing:.005em}
.page-hero .hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);max-width:600px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:22px}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.hero-stats strong{font-family:var(--mono);font-size:26px;font-weight:600;color:var(--text);letter-spacing:-.01em}
.hero-stats span{font-size:12.5px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--line-strong);
  box-shadow:var(--shadow);filter:saturate(1.03);
}
.glass-float{
  position:absolute;left:-24px;bottom:-28px;width:min(300px,84%);
  padding:18px 20px;border-radius:var(--radius-card);
  background:rgba(18,26,51,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.glass-float .float-title{font-size:16px;font-weight:600;color:var(--text);margin:10px 0 4px}
.glass-float .float-desc{font-size:13px;color:var(--text-2);line-height:1.6}

/* ============ 板块标题 ============ */
.section-head{max-width:720px;margin-bottom:52px}
.section-head h2{font-size:32px;margin-bottom:14px}
.section-head p{font-size:16px;line-height:1.8}
.eyebrow{display:inline-block;font-size:12.5px;letter-spacing:.1em;color:var(--accent);margin-bottom:14px;font-weight:600}

/* ============ 左右分栏图文 ============ */
.split{display:grid;grid-template-columns:1.06fr .94fr;gap:64px;align-items:center;padding:38px 0}
.split + .split{margin-top:44px;border-top:1px solid var(--line);padding-top:72px}
.split.reverse{grid-template-columns:.94fr 1.06fr}
.split.reverse .split-text{order:2}
.split.reverse .split-media{order:1}
.split-text h2{font-size:30px;margin-bottom:16px}
.split-text p{font-size:16px;line-height:1.85;margin-bottom:14px}
.split-text p:last-of-type{margin-bottom:22px}
.check-list{display:grid;gap:12px;margin-bottom:24px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);line-height:1.7}
.check-list li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 10px rgba(63,217,200,.8);
}
.text-link{color:var(--accent);font-size:15px;font-weight:500;display:inline-flex;align-items:center;gap:6px}
.text-link:hover{color:#7ff0e2;text-decoration:underline;text-underline-offset:4px}
.media-frame{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:filter .25s ease,transform .35s ease}
.media-frame:hover img{filter:brightness(1.08)}
.media-tag{
  position:absolute;left:16px;top:16px;
  padding:5px 12px;border-radius:999px;font-size:12px;
  background:rgba(7,11,27,.76);border:1px solid var(--line-strong);color:var(--text-2);
}
.media-caption{position:absolute;left:0;right:0;bottom:0;padding:16px 18px;font-size:13px;color:var(--text-2);
  background:linear-gradient(180deg,transparent,rgba(7,11,27,.88));}

/* ============ 模块清单 ============ */
.module-list{border-top:1px solid var(--line);margin-top:8px}
.module-row{
  display:grid;grid-template-columns:64px 1.05fr 1.5fr auto;
  gap:24px;align-items:center;
  min-height:76px;padding:16px 18px;
  border-bottom:1px solid var(--line);
  transition:background .22s ease,box-shadow .22s ease;
}
.module-row:nth-child(odd){background:rgba(140,160,220,.025)}
.module-row:hover{background:rgba(124,107,255,.07);box-shadow:inset 3px 0 0 var(--primary)}
.module-index{font-family:var(--mono);font-size:15px;color:var(--text-3);letter-spacing:.06em}
.module-name{font-size:17px;font-weight:600;color:var(--text)}
.module-desc{font-size:14.5px;color:var(--text-2);line-height:1.7}
.module-row .badge{justify-self:end}

/* ============ 客户反馈 ============ */
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.quote-card{
  background:var(--bg-elev);border:1px solid var(--line-strong);border-radius:var(--radius-card);
  padding:28px;display:flex;flex-direction:column;gap:18px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.quote-card:hover{transform:translateY(-4px);border-color:rgba(124,107,255,.45);box-shadow:var(--shadow)}
.quote-card blockquote{margin:0;font-size:16px;line-height:1.85;color:var(--text);border-left:3px solid var(--primary);padding-left:16px}
.quote-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3)}
.quote-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3)}

/* ============ 底部 CTA ============ */
.cta-band{padding:88px 0 104px}
.cta-card{
  position:relative;overflow:hidden;border-radius:24px;
  padding:64px 56px;text-align:left;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.cta-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,11,27,.86),rgba(11,18,38,.66) 58%,rgba(7,11,27,.8));
}
.cta-card::after{
  content:"";position:absolute;left:-12%;bottom:-40%;width:640px;height:420px;
  background:radial-gradient(closest-side,rgba(63,217,200,.16),transparent 72%);pointer-events:none;
}
.cta-content{position:relative;z-index:1;max-width:660px}
.cta-content h2{font-size:32px;margin-bottom:14px}
.cta-content p{font-size:16px;margin-bottom:28px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:#050814;border-top:1px solid var(--line);padding:72px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-brand .logo{font-size:18px;margin-bottom:16px}
.footer-brand p{font-size:13.5px;line-height:1.75;color:var(--text-3);max-width:320px;margin-bottom:14px}
.footer-domain{font-family:var(--mono);font-size:13px;color:var(--text-2);letter-spacing:.05em}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:13.5px;color:var(--text-3);display:inline-block}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom nav a{color:var(--text-3)}
.footer-bottom nav a:hover{color:var(--accent)}

/* ============ 移动端抽屉 ============ */
.nav-drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(6,10,22,.98);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  display:flex;flex-direction:column;
  padding:20px 20px 28px;
  transform:translateX(100%);
  transition:transform .28s ease-out;
  visibility:hidden;
}
.nav-drawer.open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;color:var(--text-2)}
.drawer-close:hover{color:var(--accent);border-color:var(--accent)}
.drawer-nav{display:flex;flex-direction:column;padding:14px 0;flex:1;overflow-y:auto}
.drawer-nav a{
  min-height:52px;display:flex;align-items:center;
  font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);
  transition:color .2s ease,padding-left .2s ease;
}
.drawer-nav a:hover{color:var(--text)}
.drawer-nav a.is-active{color:var(--accent);padding-left:8px;border-bottom-color:rgba(63,217,200,.35)}
.drawer-foot{display:flex;flex-direction:column;gap:12px}
.drawer-foot .btn{width:100%;height:50px}
body.no-scroll{overflow:hidden}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav-inner{gap:14px}
  .nav-link{padding:0 11px;font-size:14.5px}
  .hero-grid{gap:40px}
  .page-hero h1{font-size:40px}
}
@media (max-width:1023px){
  .nav-menu,.nav-actions{display:none}
  .nav-toggle{display:flex}
  .nav-inner{height:64px}
  .topbar-note{display:none}
  .topbar-links a:first-child{display:none}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .glass-float{left:16px;bottom:-22px;width:min(320px,80%)}
  .split,.split.reverse{grid-template-columns:1fr;gap:32px;padding:24px 0}
  .split + .split{padding-top:56px}
  .split.reverse .split-text{order:1}
  .split.reverse .split-media{order:2}
  .section{padding:72px 0}
  .module-row{grid-template-columns:52px 1fr auto;gap:18px}
  .module-desc{grid-column:2 / span 2}
  .quote-grid{grid-template-columns:1fr}
  .cta-card{padding:48px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .page-hero{padding:40px 0 64px}
  .page-hero h1{font-size:31px}
  .page-hero .hero-sub{font-size:16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:34px}
  .section-head h2,.split-text h2,.cta-content h2{font-size:25px}
  .hero-stats{gap:24px}
  .hero-stats strong{font-size:22px}
  .btn{height:48px;width:100%}
  .btn-sm{width:auto}
  .hero-actions,.cta-actions{flex-direction:column;gap:12px}
  .hero-actions .btn{width:100%}
  .cta-card{padding:36px 22px;border-radius:18px}
  .cta-band{padding:56px 0 72px}
  .quote-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .page-hero h1{font-size:27px}
  .section-head h2,.split-text h2,.cta-content h2{font-size:23px}
  .module-row{grid-template-columns:1fr;gap:10px;padding:18px 14px}
  .module-desc{grid-column:auto}
  .module-row .badge{justify-self:start}
  .glass-float{padding:16px;left:10px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg-deep:#070B1B;
  --bg-base:#0B1226;
  --bg-elev:#121A33;
  --line:rgba(140,160,220,.14);
  --line-strong:rgba(160,180,255,.16);
  --primary:#7C6BFF;
  --primary-hover:#9587FF;
  --primary-active:#6656E0;
  --accent:#3FD9C8;
  --star:#FFC96B;
  --text:#E9EDFA;
  --text-2:#A7B1CE;
  --text-3:#6F7A99;
  --danger:#FF6B6B;
  --glass:rgba(18,26,51,.55);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow:0 12px 32px rgba(3,6,20,.45);
  --glow:0 0 0 1px rgba(124,107,255,.6),0 8px 28px rgba(124,107,255,.35);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg-base);
  background-image:
    radial-gradient(900px 520px at 82% -8%,rgba(124,107,255,.16),transparent 62%),
    radial-gradient(680px 420px at 4% 12%,rgba(63,217,200,.09),transparent 66%);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:600;line-height:1.25;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--deep{background:var(--bg-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ============ 顶部信息条 ============ */
.topbar{
  background:#050915;
  border-bottom:1px solid var(--line);
  font-size:12.5px;
  line-height:1;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:36px;
}
.topbar-left{color:var(--text-3);font-family:var(--font-num);letter-spacing:.02em;}
.topbar-mid{
  color:var(--text-2);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.topbar-mid .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(63,217,200,.14);
}
.topbar-right{display:flex;align-items:center;gap:18px;}
.topbar-right a{color:var(--text-2);transition:color .2s ease-out;}
.topbar-right a:hover{color:var(--accent);}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(11,18,38,.7);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-strong);
  transition:background .25s ease-out,box-shadow .25s ease-out;
}
.site-header.is-scrolled{
  background:rgba(7,11,27,.92);
  box-shadow:0 10px 30px rgba(3,6,20,.55);
}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  height:68px;
  display:flex;
  align-items:center;
  gap:28px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:600;
  color:var(--text);
  white-space:nowrap;
  transition:color .2s ease-out;
}
.logo-mark{display:inline-flex;color:var(--primary);transition:transform .4s ease-out;}
.logo:hover .logo-mark{transform:rotate(-14deg);}
.logo:hover{color:#fff;}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-item{position:relative;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:68px;
  padding:0 14px;
  font-size:15px;
  color:var(--text-2);
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:16px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease-out;
}
.nav-item:hover>.nav-link,
.nav-item.active>.nav-link{color:var(--text);}
.nav-item:hover>.nav-link::after{transform:scaleX(1);}
.nav-item.active>.nav-link::after{
  transform:scaleX(1);
  box-shadow:0 0 10px rgba(124,107,255,.8);
}
.nav-item.active>.nav-link{color:#fff;}
.nav-panel{
  position:absolute;
  top:calc(100% - 6px);
  left:50%;
  transform:translateX(-50%) translateY(6px);
  width:520px;
  padding:20px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:8px 22px;
  background:rgba(11,18,38,.97);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
}
.nav-item.has-panel:hover .nav-panel,
.nav-item.has-panel:focus-within .nav-panel{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.panel-title{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-3);
  margin-bottom:8px;
}
.panel-col a{
  display:block;
  padding:8px 0;
  font-size:14px;
  color:var(--text-2);
  border-bottom:1px dashed rgba(140,160,220,.12);
  transition:color .2s ease-out,padding-left .2s ease-out;
}
.panel-col a:last-child{border-bottom:0;}
.panel-col a:hover{color:var(--accent);padding-left:4px;}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line-strong);
  border-radius:12px;
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:500;
  white-space:nowrap;
  position:relative;
  overflow:hidden;
  transition:transform .22s ease-out,background .22s ease-out,box-shadow .22s ease-out,color .22s ease-out,border-color .22s ease-out;
}
.btn::after{
  content:"";
  position:absolute;
  inset:0 auto 0 0;
  width:0;
  background:linear-gradient(90deg,rgba(255,255,255,.22),rgba(255,255,255,0));
  transition:width .3s ease-out;
  pointer-events:none;
}
.btn:hover::after{width:100%;}
.btn-primary{
  background:var(--primary);
  color:#0A0F22;
  font-weight:600;
  box-shadow:var(--glow);
}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);}
.btn-primary:active{background:var(--primary-active);transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border:1px solid rgba(63,217,200,.5);
}
.btn-ghost:hover{
  color:#fff;
  border-color:var(--accent);
  box-shadow:0 0 0 1px rgba(63,217,200,.35),0 8px 22px rgba(63,217,200,.18);
  transform:translateY(-2px);
}
.btn-text{
  height:auto;
  padding:0;
  color:var(--accent);
  font-size:15px;
}
.btn-text:hover{text-decoration:underline;}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-lg{height:50px;padding:0 30px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(7,11,27,.98);
  backdrop-filter:blur(10px);
  display:flex;
  flex-direction:column;
  transform:translateY(-100%);
  transition:transform .3s ease-out;
  visibility:hidden;
}
.drawer.is-open{transform:translateY(0);visibility:visible;}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 20px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:42px;height:42px;
  border:1px solid var(--line-strong);
  border-radius:12px;
  font-size:20px;
  line-height:1;
  color:var(--text-2);
}
.drawer-close:hover{color:var(--accent);border-color:var(--accent);}
.drawer-body{flex:1;overflow-y:auto;padding:12px 20px 24px;}
.drawer-group-title{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text-3);
  padding:16px 0 6px;
}
.drawer-body a{
  display:flex;
  align-items:center;
  min-height:48px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px solid rgba(140,160,220,.1);
}
.drawer-body a.active{color:var(--accent);}
.drawer-foot{
  padding:16px 20px 24px;
  border-top:1px solid var(--line);
  display:grid;
  gap:10px;
}
.drawer-foot .btn{width:100%;height:48px;}

/* ============ 面包屑 ============ */
.breadcrumb-bar{
  border-bottom:1px solid var(--line);
  background:rgba(7,11,27,.5);
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  height:52px;
  font-size:13px;
  color:var(--text-3);
  overflow:hidden;
  white-space:nowrap;
}
.breadcrumb a{color:var(--text-3);transition:color .2s ease-out;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--text-2);overflow:hidden;text-overflow:ellipsis;}

/* ============ 分类页首屏 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(7,11,27,.72),rgba(7,11,27,.9)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  top:-180px;right:-120px;
  width:620px;height:620px;
  background:radial-gradient(circle,rgba(124,107,255,.28),transparent 62%);
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  padding:84px 0 88px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid rgba(63,217,200,.45);
  background:rgba(63,217,200,.08);
  color:var(--accent);
  font-size:12px;
  letter-spacing:.04em;
}
.page-hero h1{
  margin:18px 0 16px;
  font-size:44px;
  line-height:1.2;
  color:#fff;
  max-width:14em;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--primary-hover);
}
.hero-lead{
  font-size:17px;
  color:var(--text-2);
  max-width:38em;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-note{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  font-size:13px;
  color:var(--text-3);
}
.hero-note span{display:inline-flex;align-items:center;gap:8px;}
.hero-note i{
  width:5px;height:5px;border-radius:50%;
  background:var(--accent);
  display:inline-block;
}
.hero-visual{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  aspect-ratio:4/3;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;filter:brightness(.72) saturate(1.05);}
.hero-visual .veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,27,.35),rgba(7,11,27,.72));
}
.hero-badge{
  position:absolute;
  top:16px;right:16px;
  height:26px;
  padding:0 12px;
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  border:1px solid rgba(255,201,107,.6);
  background:rgba(255,201,107,.12);
  color:var(--star);
  font-size:12px;
  letter-spacing:.04em;
}
.hero-float{
  position:absolute;
  left:18px;right:18px;bottom:18px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}
.glass-card{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-img);
  padding:14px 16px;
}
.glass-card .num{
  font-family:var(--font-num);
  font-size:22px;
  font-weight:700;
  color:#fff;
  line-height:1.2;
}
.glass-card .cap{font-size:12px;color:var(--text-2);margin-top:2px;}

/* ============ 通用板块头 ============ */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:52px;
}
.section-head h2{
  font-size:32px;
  color:#fff;
  margin-bottom:12px;
}
.section-head p{
  font-size:16px;
  color:var(--text-2);
  max-width:44em;
}
.section-tag{
  font-family:var(--font-num);
  font-size:13px;
  color:var(--accent);
  letter-spacing:.12em;
  margin-bottom:12px;
  display:block;
}

/* ============ 时间轴 / 步骤条 ============ */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:24px;
  padding-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  top:29px;
  left:9%;
  right:9%;
  height:2px;
  background:linear-gradient(90deg,rgba(124,107,255,0),rgba(124,107,255,.55) 12%,rgba(63,217,200,.55) 88%,rgba(63,217,200,0));
  box-shadow:0 0 12px rgba(124,107,255,.35);
}
.step{
  position:relative;
  z-index:2;
  text-align:center;
  padding:0 6px;
}
.step-dot{
  width:22px;height:22px;
  margin:0 auto 20px;
  border-radius:50%;
  background:var(--bg-base);
  border:1px solid rgba(124,107,255,.6);
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 0 0 6px rgba(124,107,255,.1);
  transition:box-shadow .22s ease-out,border-color .22s ease-out;
}
.step-dot::before{
  content:"";
  width:8px;height:8px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--accent));
}
.step:hover .step-dot{
  border-color:var(--accent);
  box-shadow:0 0 0 8px rgba(63,217,200,.14);
}
.step-num{
  font-family:var(--font-num);
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.12em;
  margin-bottom:8px;
}
.step h3{
  font-size:19px;
  color:#fff;
  margin-bottom:10px;
}
.step p{font-size:14.5px;color:var(--text-2);}

/* ============ 两列明细卡 ============ */
.detail-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.detail-card{
  background:var(--bg-elev);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-card);
  padding:26px;
  display:flex;
  gap:18px;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.detail-card:hover{
  transform:translateY(-4px);
  border-color:rgba(124,107,255,.5);
  box-shadow:var(--shadow);
}
.detail-icon{
  flex:0 0 44px;
  width:44px;height:44px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(124,107,255,.14);
  border:1px solid rgba(124,107,255,.32);
  color:var(--primary-hover);
}
.detail-icon svg{width:22px;height:22px;}
.detail-card h3{font-size:19px;color:#fff;margin-bottom:8px;}
.detail-card p{font-size:14.5px;color:var(--text-2);}
.detail-meta{
  margin-top:12px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:25px;
  padding:0 11px;
  border-radius:999px;
  font-size:12px;
  color:var(--accent);
  border:1px solid rgba(63,217,200,.4);
  background:rgba(63,217,200,.08);
}
.tag--gold{color:var(--star);border-color:rgba(255,201,107,.5);background:rgba(255,201,107,.1);}
.tag--plain{color:var(--text-2);border-color:var(--line-strong);background:rgba(140,160,220,.08);}

/* ============ 图文示例 ============ */
.split{
  display:grid;
  grid-template-columns:6fr 6fr;
  gap:64px;
  align-items:center;
}
.split.reverse .split-media{order:2;}
.split-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line-strong);
  aspect-ratio:16/10;
  box-shadow:var(--shadow);
}
.split-media img{
  width:100%;height:100%;object-fit:cover;
  transition:filter .3s ease-out;
}
.split-media:hover img{filter:brightness(1.08);}
.split-body h2{font-size:30px;color:#fff;margin-bottom:16px;}
.split-body>p{color:var(--text-2);font-size:16px;margin-bottom:22px;}
.check-list{display:grid;gap:14px;}
.check-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  color:var(--text-2);
  align-items:flex-start;
}
.check-list li svg{
  flex:0 0 18px;
  width:18px;height:18px;
  margin-top:4px;
  color:var(--accent);
}
.check-list strong{color:var(--text);font-weight:600;}

/* ============ 指标带 ============ */
.stats-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.stat{
  background:var(--bg-base);
  padding:30px 26px;
}
.stat .value{
  font-family:var(--font-num);
  font-size:36px;
  font-weight:700;
  color:#fff;
  line-height:1.1;
}
.stat .value em{font-style:normal;font-size:18px;color:var(--accent);margin-left:4px;}
.stat .label{font-size:13px;color:var(--text-3);margin-top:10px;}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0 40px;
}
.faq-item{
  border-bottom:1px solid var(--line);
  position:relative;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:18px;
  width:3px;height:0;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  transition:height .26s ease-out;
}
.faq-item.is-open::before{height:calc(100% - 42px);}
.faq-q{
  width:100%;
  min-height:58px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 0 16px 16px;
  text-align:left;
  font-size:16px;
  font-weight:500;
  color:var(--text);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--accent);}
.faq-sign{
  flex:0 0 22px;
  width:22px;height:22px;
  position:relative;
  border-radius:6px;
  border:1px solid var(--line-strong);
}
.faq-sign::before,.faq-sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:10px;height:1.5px;
  background:var(--text-2);
  transform:translate(-50%,-50%);
  transition:transform .26s ease-out,background .2s ease-out;
}
.faq-sign::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item.is-open .faq-sign::after{transform:translate(-50%,-50%) rotate(0);}
.faq-item.is-open .faq-sign::before,
.faq-item.is-open .faq-sign::after{background:var(--accent);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s ease-out;
}
.faq-a p{
  padding:0 40px 20px 16px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ============ 底部 CTA ============ */
.cta-band{padding:0 0 96px;}
.cta-card{
  position:relative;
  overflow:hidden;
  border-radius:22px;
  border:1px solid var(--line-strong);
  background-image:linear-gradient(100deg,rgba(7,11,27,.88),rgba(7,11,27,.62)),url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  padding:64px 56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  box-shadow:var(--shadow);
}
.cta-card::after{
  content:"";
  position:absolute;
  right:-140px;top:-140px;
  width:520px;height:520px;
  background:radial-gradient(circle,rgba(63,217,200,.22),transparent 62%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:46em;}
.cta-copy h2{font-size:32px;color:#fff;margin-bottom:14px;}
.cta-copy p{font-size:16px;color:var(--text-2);}
.cta-actions{
  position:relative;z-index:2;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:72px 0 28px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{
  color:var(--text-2);
  font-size:14px;
  max-width:26em;
  margin-bottom:14px;
}
.footer-domain{
  font-family:var(--font-num);
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.04em;
}
.footer-col h4{
  font-size:14px;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  color:var(--text-2);
  font-size:13.5px;
  transition:color .2s ease-out,transform .2s ease-out;
  display:inline-block;
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom nav a{color:var(--text-3);transition:color .2s ease-out;}
.footer-bottom nav a:hover{color:var(--accent);}

/* ============ 动效进入 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .page-hero h1{font-size:40px;}
  .container{padding:0 24px;}
}
@media (max-width:1023px){
  .nav-menu,.nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions{margin-left:auto;}
  .page-hero-inner{grid-template-columns:1fr;gap:40px;padding:64px 0 68px;}
  .page-hero h1{font-size:36px;max-width:none;}
  .split{grid-template-columns:1fr;gap:36px;}
  .split.reverse .split-media{order:0;}
  .timeline{grid-template-columns:repeat(3,1fr);gap:36px 24px;}
  .timeline::before{display:none;}
  .step{text-align:left;}
  .step-dot{margin:0 0 14px;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .faq-grid{grid-template-columns:1fr;gap:0;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:48px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .section{padding:60px 0;}
  .section--tight{padding:52px 0;}
  .container{padding:0 20px;}
  .nav-inner{padding:0 20px;height:62px;}
  .topbar-mid{display:none;}
  .breadcrumb{height:46px;}
  .page-hero h1{font-size:31px;}
  .hero-lead{font-size:16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px;}
  .section-head h2{font-size:25px;}
  .split-body h2{font-size:24px;}
  .timeline{grid-template-columns:1fr;gap:30px;}
  .detail-grid{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:1fr;}
  .stat{padding:24px 20px;}
  .stat .value{font-size:30px;}
  .cta-card{padding:38px 24px;border-radius:18px;}
  .cta-copy h2{font-size:25px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .detail-card{padding:20px;gap:14px;}
}
@media (max-width:480px){
  .page-hero h1{font-size:28px;}
  .btn{height:48px;}
  .detail-card{padding:16px;}
  .glass-card{padding:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg-deep:#070B1B;
  --bg-base:#0B1226;
  --bg-elev:#121A33;
  --line:rgba(140,160,220,.14);
  --line-strong:rgba(160,180,255,.16);
  --primary:#7C6BFF;
  --primary-hover:#9587FF;
  --primary-active:#6656E0;
  --accent:#3FD9C8;
  --star:#FFC96B;
  --text:#E9EDFA;
  --text-2:#A7B1CE;
  --text-3:#6F7A99;
  --glass:rgba(18,26,51,.55);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow:0 12px 32px rgba(3,6,20,.45);
  --glow:0 0 0 1px rgba(124,107,255,.6), 0 8px 28px rgba(124,107,255,.35);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(circle at 12% 6%, rgba(124,107,255,.16), transparent 42%),
    radial-gradient(circle at 90% 2%, rgba(63,217,200,.10), transparent 40%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
[hidden]{display:none !important;}
::selection{background:rgba(124,107,255,.4);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 顶部信息条 ============ */
.topbar{
  background:#050915;
  border-bottom:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
}
.topbar-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:36px;
  gap:16px;
}
.topbar-domain{
  font-family:var(--mono);
  letter-spacing:.02em;
  color:var(--text-3);
}
.topbar-note{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--text-2);
  white-space:nowrap;
}
.topbar-note::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px rgba(63,217,200,.8);
}
.topbar-actions{display:flex;gap:18px;justify-self:end;}
.topbar-actions a{color:var(--text-2);transition:color .2s ease-out;}
.topbar-actions a:hover{color:var(--accent);}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(9,14,34,.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(160,180,255,.12);
  transition:background .25s ease-out, box-shadow .25s ease-out;
}
.site-header.scrolled{
  background:rgba(7,11,27,.94);
  box-shadow:0 10px 28px rgba(3,6,20,.55);
}
.nav-inner{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  height:70px;
  display:flex;
  align-items:center;
  gap:20px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:600;
  color:var(--text);
  white-space:nowrap;
  transition:color .2s ease-out;
}
.logo:hover{color:var(--primary-hover);}
.logo-mark{display:inline-flex;color:var(--primary);}

.nav-menu{display:flex;align-items:center;gap:2px;margin-left:12px;}
.nav-item{position:relative;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:10px;
  font-size:14px;
  font-weight:500;
  color:var(--text-2);
  transition:color .2s ease-out, background .2s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:5px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease-out;
}
.nav-item:hover .nav-link{color:var(--text);}
.nav-item:hover .nav-link::after{transform:scaleX(1);}
.nav-item.active .nav-link{color:var(--text);}
.nav-item.active .nav-link::after{transform:scaleX(1);box-shadow:0 0 12px rgba(124,107,255,.7);}

.nav-panel{
  position:absolute;
  top:calc(100% + 12px);
  left:0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
  min-width:420px;
  padding:20px;
  background:rgba(12,19,42,.97);
  border:1px solid var(--line-strong);
  border-radius:16px;
  box-shadow:var(--shadow);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .22s ease-out, transform .22s ease-out, visibility .22s;
}
.nav-item.has-panel:hover .nav-panel,
.nav-item.has-panel:focus-within .nav-panel{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.panel-title{
  font-size:12px;
  font-weight:600;
  color:var(--text-3);
  letter-spacing:.06em;
  margin-bottom:10px;
}
.panel-col a{
  display:block;
  padding:8px 0;
  font-size:14px;
  color:var(--text-2);
  border-bottom:1px dashed rgba(140,160,220,.10);
  transition:color .2s ease-out, padding-left .2s ease-out;
}
.panel-col a:last-child{border-bottom:0;}
.panel-col a:hover{color:var(--accent);padding-left:4px;}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);}

/* ============ 按钮 ============ */
.btn{
  position:relative;
  overflow:hidden;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  border:1px solid transparent;
  transition:background .22s ease-out, color .22s ease-out, border-color .22s ease-out, transform .22s ease-out, box-shadow .22s ease-out;
}
.btn::after{
  content:"";
  position:absolute;
  top:0;left:-60%;
  width:40%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.30),transparent);
  transform:skewX(-18deg);
  opacity:0;
  transition:left .3s ease-out, opacity .3s ease-out;
  pointer-events:none;
}
.btn:hover::after{left:120%;opacity:1;}
.btn-primary{
  background:var(--primary);
  color:#0B0F22;
  box-shadow:var(--glow);
}
.btn-primary:hover{background:var(--primary-hover);}
.btn-primary:active{background:var(--primary-active);}
.btn-ghost{
  background:transparent;
  color:var(--accent);
  border-color:rgba(63,217,200,.5);
}
.btn-ghost:hover{
  background:rgba(63,217,200,.10);
  color:#7BEEE1;
  border-color:rgba(63,217,200,.8);
}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent);
  font-size:14.5px;
  font-weight:600;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease-out, color .2s ease-out;
}
.btn-text:hover{border-bottom-color:var(--accent);color:#7BEEE1;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;}

/* ============ 移动抽屉 ============ */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:120;
  background:rgba(6,10,24,.98);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  padding:18px 20px 28px;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);}
.drawer-close{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;color:var(--text-2);
}
.drawer-nav{padding:10px 0;flex:1;}
.drawer-group-title{
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.06em;
  padding:16px 4px 6px;
}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 4px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px dashed rgba(140,160,220,.10);
}
.drawer-nav a.active{color:var(--accent);}
.drawer-foot{padding-top:14px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}

/* ============ 面包屑 ============ */
.crumb{
  font-size:13px;
  color:var(--text-3);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumb a{color:var(--text-3);transition:color .2s ease-out;}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:rgba(140,160,220,.4);}
.crumb .now{color:var(--text-2);}

/* ============ 页面 Banner ============ */
.page-banner{
  position:relative;
  overflow:hidden;
  padding:60px 0 68px;
  border-bottom:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,27,.74) 0%,rgba(7,11,27,.66) 45%,rgba(11,18,38,.94) 100%);
}
.page-banner::after{
  content:"";
  position:absolute;
  top:-140px;right:-120px;
  width:560px;height:560px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(124,107,255,.20),transparent 68%);
  pointer-events:none;
}
.page-banner .container{position:relative;z-index:2;}
.banner-crumb{margin-bottom:22px;}
.page-banner h1{
  font-size:44px;
  line-height:1.22;
  font-weight:600;
  max-width:900px;
  letter-spacing:0;
}
.page-banner .lede{
  margin-top:20px;
  max-width:760px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text-2);
}
.banner-stats{
  margin-top:38px;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border-top:1px solid var(--line);
  padding-top:24px;
}
.banner-stats .bs{
  padding-right:22px;
  border-right:1px solid var(--line);
}
.banner-stats .bs:last-child{border-right:0;}
.banner-stats .bs-num{
  font-family:var(--mono);
  font-size:26px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:.01em;
}
.banner-stats .bs-num em{font-style:normal;font-size:14px;color:var(--text-2);margin-left:4px;}
.banner-stats .bs-label{margin-top:6px;font-size:12.5px;color:var(--text-3);}

/* ============ 板块 ============ */
.section{padding:92px 0;}
.section-alt{background:linear-gradient(180deg,rgba(11,18,38,0) 0%,rgba(11,18,38,.85) 12%,rgba(11,18,38,.85) 88%,rgba(11,18,38,0) 100%);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent);}
.section-head h2{
  font-size:32px;
  line-height:1.28;
  font-weight:600;
}
.section-head p{
  margin-top:14px;
  font-size:16px;
  color:var(--text-2);
  line-height:1.8;
}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ============ 筛选标签行 ============ */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:22px;
}
.filter-btn{
  height:36px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(18,26,51,.5);
  color:var(--text-2);
  font-size:13.5px;
  font-weight:500;
  transition:color .2s ease-out, border-color .2s ease-out, background .2s ease-out;
}
.filter-btn:hover{color:var(--text);border-color:rgba(124,107,255,.6);}
.filter-btn.active{
  color:#0B0F22;
  background:var(--accent);
  border-color:var(--accent);
  box-shadow:0 0 0 1px rgba(63,217,200,.5), 0 6px 20px rgba(63,217,200,.20);
}

/* ============ 能力矩阵 ============ */
.matrix{
  border:1px solid var(--line-strong);
  border-radius:var(--radius-card);
  background:rgba(13,20,44,.72);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.matrix-head{
  display:grid;
  grid-template-columns:1.05fr .62fr 1.5fr;
  gap:24px;
  align-items:center;
  padding:14px 24px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--text-3);
  background:rgba(18,26,51,.9);
  border-bottom:1px solid var(--line);
}
.matrix-row{
  display:grid;
  grid-template-columns:1.05fr .62fr 1.5fr;
  gap:24px;
  align-items:center;
  min-height:56px;
  padding:18px 24px;
  border-bottom:1px dashed var(--line);
  transition:background .22s ease-out, box-shadow .22s ease-out;
}
.matrix-row:nth-child(even){background:rgba(124,107,255,.028);}
.matrix-row:last-child{border-bottom:0;}
.matrix-row:hover{background:rgba(124,107,255,.075);}
.matrix-name h3{
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.matrix-name p{
  margin-top:4px;
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.6;
}
.matrix-checks{display:flex;flex-wrap:wrap;gap:8px 20px;}
.chk{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--text-2);
}
.chk::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 8px rgba(63,217,200,.75);
  flex:0 0 6px;
  transform:translateY(-1px);
}

/* 徽章 */
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  white-space:nowrap;
  border:1px solid rgba(63,217,200,.42);
  background:rgba(63,217,200,.08);
  color:var(--accent);
}
.badge.badge-primary{border-color:rgba(124,107,255,.45);background:rgba(124,107,255,.10);color:#B5ACFF;}
.badge.badge-star{border-color:rgba(255,201,107,.5);background:rgba(255,201,107,.08);color:var(--star);}

/* ============ 图文分栏 ============ */
.split{
  display:grid;
  grid-template-columns:5fr 6fr;
  gap:56px;
  align-items:center;
}
.split-media{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  background:var(--bg-elev);
}
.split-media img{
  width:100%;
  height:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:filter .3s ease-out;
}
.split-media:hover img{filter:brightness(1.08);}
.split-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,27,.05) 40%,rgba(7,11,27,.55) 100%);
  pointer-events:none;
}
.step-list li{
  display:grid;
  grid-template-columns:52px 1fr;
  gap:16px;
  padding:20px 0;
  border-bottom:1px dashed var(--line);
}
.step-list li:last-child{border-bottom:0;}
.step-idx{
  font-family:var(--mono);
  font-size:15px;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.04em;
}
.step-list h3{font-size:17px;font-weight:600;}
.step-list p{margin-top:6px;font-size:14.5px;color:var(--text-2);line-height:1.75;}

/* ============ 卡片 ============ */
.grid-cards{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.card{
  background:rgba(18,26,51,.72);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-card);
  padding:24px;
  transition:transform .22s ease-out, border-color .22s ease-out, box-shadow .22s ease-out;
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(124,107,255,.5);
  box-shadow:var(--shadow);
}
.card-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  margin-bottom:18px;
  background:var(--bg-deep);
}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:filter .3s ease-out;}
.card:hover .card-media img{filter:brightness(1.08);}
.card h3{font-size:18px;font-weight:600;}
.card p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.75;}
.card .card-meta{
  margin-top:16px;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:12.5px;
  color:var(--text-3);
}

/* ============ 三列小卡（安全） ============ */
.grid-three{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.tile{
  background:rgba(13,20,44,.7);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-card);
  padding:26px;
  transition:transform .22s ease-out, border-color .22s ease-out;
}
.tile:hover{transform:translateY(-4px);border-color:rgba(63,217,200,.4);}
.tile-icon{
  width:42px;height:42px;
  border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(124,107,255,.14);
  border:1px solid rgba(124,107,255,.35);
  color:var(--primary-hover);
  margin-bottom:16px;
}
.tile h3{font-size:18px;font-weight:600;}
.tile p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.75;}
.tile ul{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.tile ul li{
  display:flex;align-items:flex-start;gap:8px;
  font-size:13.5px;color:var(--text-2);
}
.tile ul li::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px rgba(124,107,255,.8);
  flex:0 0 6px;
  margin-top:9px;
}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px dashed var(--line);}
.faq-q{
  width:100%;
  min-height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  padding:16px 4px 16px 16px;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
  transition:color .2s ease-out;
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:16px;bottom:16px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  opacity:0;
  transition:opacity .22s ease-out;
}
.faq-item.open .faq-q::before{opacity:1;}
.faq-q:hover{color:var(--primary-hover);}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--accent);
  border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;transition:transform .26s ease-out;}
.faq-item.open .faq-icon::after{transform:scaleY(0);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s ease-out;
}
.faq-item.open .faq-a{max-height:360px;}
.faq-a p{
  padding:0 44px 22px 16px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ 底部 CTA ============ */
.cta-wrap{padding:0 0 96px;}
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:20px;
  border:1px solid var(--line-strong);
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  padding:56px 48px;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(7,11,27,.86) 0%,rgba(9,14,34,.72) 55%,rgba(11,18,38,.62) 100%);
}
.cta-band::after{
  content:"";
  position:absolute;
  top:-160px;right:-80px;
  width:480px;height:480px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(63,217,200,.22),transparent 68%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:680px;}
.cta-inner h2{font-size:30px;line-height:1.3;font-weight:600;}
.cta-inner p{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.8;}
.cta-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(6,10,24,.9);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.8;
  max-width:320px;
}
.footer-domain{
  display:inline-block;
  margin-top:14px;
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--text-3);
  letter-spacing:.02em;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:13.5px;
  color:var(--text-3);
  transition:color .2s ease-out, transform .2s ease-out;
  display:inline-block;
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom nav a{color:var(--text-3);transition:color .2s ease-out;}
.footer-bottom nav a:hover{color:var(--accent);}

/* ============ 动效 ============ */
.reveal{opacity:1;transform:none;}
.js .reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .55s ease-out, transform .55s ease-out;
}
.js .reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container,.nav-inner{padding:0 24px;}
  .grid-cards{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:1023px){
  .nav-menu,.nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:flex;}
  .page-banner h1{font-size:36px;}
  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-media{order:-1;}
  .grid-cards{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-three{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .matrix-row,.matrix-head{grid-template-columns:1fr .8fr 1.4fr;gap:18px;}
}
@media (max-width:860px){
  .matrix-head{display:none;}
  .matrix-row{
    grid-template-columns:1fr;
    gap:12px;
    padding:20px;
  }
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .topbar-inner{grid-template-columns:1fr auto;height:38px;}
  .topbar-note{display:none;}
  .topbar-actions a:first-child{display:none;}
  .nav-inner{height:64px;padding:0 20px;gap:12px;}
  .logo{font-size:18px;}
  .nav-actions .btn-primary{height:36px;padding:0 14px;font-size:13px;}
  .container{padding:0 20px;}
  .page-banner{padding:44px 0 52px;}
  .page-banner h1{font-size:30px;}
  .page-banner .lede{font-size:15.5px;}
  .banner-stats{grid-template-columns:1fr 1fr;gap:20px 0;}
  .banner-stats .bs{border-right:0;padding-right:0;}
  .banner-stats .bs:nth-child(odd){border-right:1px solid var(--line);padding-right:16px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:24px;}
  .split{gap:24px;}
  .grid-cards{grid-template-columns:1fr;}
  .grid-three{grid-template-columns:1fr;}
  .cta-band{padding:36px 22px;}
  .cta-inner h2{font-size:24px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:0;padding-bottom:20px;}
  .footer-col{padding:18px 0;border-bottom:1px dashed var(--line);}
  .footer-col:first-of-type{border-top:1px dashed var(--line);}
  .footer-brand{padding-bottom:18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-a p{padding-right:16px;}
}
@media (max-width:480px){
  .page-banner h1{font-size:27px;}
  .card,.tile{padding:18px;}
  .btn{height:48px;}
  .btn-sm{height:38px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .js .reveal{opacity:1 !important;transform:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --bg-deep:#070B1B;
  --bg-base:#0B1226;
  --bg-elev:#121A33;
  --line:rgba(140,160,220,.14);
  --line-strong:rgba(160,180,255,.16);
  --primary:#7C6BFF;
  --primary-hover:#9587FF;
  --primary-active:#6656E0;
  --accent:#3FD9C8;
  --star:#FFC96B;
  --text:#E9EDFA;
  --text-2:#A7B1CE;
  --text-3:#6F7A99;
  --danger:#FF6B6B;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow:0 12px 32px rgba(3,6,20,.45);
  --glow-primary:0 0 0 1px rgba(124,107,255,.6),0 8px 28px rgba(124,107,255,.35);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(1px 1px at 12% 22%,rgba(255,255,255,.14),transparent 60%),
    radial-gradient(1px 1px at 68% 8%,rgba(255,255,255,.10),transparent 60%),
    radial-gradient(1px 1px at 34% 62%,rgba(255,255,255,.09),transparent 60%),
    radial-gradient(1px 1px at 88% 44%,rgba(255,255,255,.12),transparent 60%),
    radial-gradient(1px 1px at 52% 86%,rgba(255,255,255,.08),transparent 60%);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.aurora{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(58% 42% at 10% 6%,rgba(124,107,255,.18),transparent 70%),
    radial-gradient(46% 38% at 94% 26%,rgba(63,217,200,.12),transparent 72%);
  animation:auroraShift 20s ease-in-out infinite alternate;
}
@keyframes auroraShift{
  from{transform:translate3d(-1.5%,-1%,0) scale(1);}
  to{transform:translate3d(1.5%,1.6%,0) scale(1.06);}
}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{
  position:relative;z-index:70;
  height:36px;display:flex;align-items:center;
  background:#050814;
  border-bottom:1px solid var(--line);
  font-size:12.5px;line-height:1;
}
.topbar-inner{
  width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.topbar-domain{font-family:var(--mono);color:var(--text-3);letter-spacing:.02em;}
.topbar-notice{color:var(--text-3);}
.topbar-notice b{color:var(--accent);font-weight:500;}
.topbar-actions{display:flex;align-items:center;gap:18px;}
.topbar-actions a{color:var(--text-2);}
.topbar-actions a:hover{color:var(--accent);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,27,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-strong);
  transition:background .24s ease-out,box-shadow .24s ease-out;
}
.site-header.scrolled{
  background:rgba(6,9,22,.94);
  box-shadow:0 10px 28px rgba(3,6,20,.5);
}
.nav-inner{
  width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:24px;
}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:600;color:var(--text);letter-spacing:.01em;flex:none;
}
.logo-mark{display:inline-flex;color:var(--primary);transition:transform .3s ease-out;}
.logo:hover .logo-mark{transform:rotate(-16deg);}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1;justify-content:center;}
.nav-item{position:relative;}
.nav-link{
  display:inline-block;padding:9px 14px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);position:relative;white-space:nowrap;
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-item.active .nav-link{color:var(--text);}
.nav-item.active .nav-link::after{
  transform:scaleX(1);
  box-shadow:0 0 10px rgba(124,107,255,.75);
}
.nav-panel{
  position:absolute;top:calc(100% + 12px);left:50%;
  transform:translateX(-50%) translateY(8px);
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
  min-width:440px;padding:20px 24px;
  background:rgba(11,18,38,.97);
  border:1px solid var(--line-strong);border-radius:16px;
  box-shadow:var(--shadow);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .22s ease-out,transform .22s ease-out,visibility .22s;
  z-index:80;
}
.nav-item.has-panel:hover .nav-panel,
.nav-item.has-panel:focus-within .nav-panel{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.panel-title{
  font-size:12px;color:var(--accent);letter-spacing:.08em;margin-bottom:10px;font-weight:500;
}
.panel-col a{
  display:block;padding:6px 0;font-size:14px;color:var(--text-2);
}
.panel-col a:hover{color:var(--text);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}

.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid var(--line-strong);
  color:var(--text);cursor:pointer;align-items:center;justify-content:center;
}
.hamburger span{display:block;position:relative;}
.hamburger span::before,.hamburger span::after,.hamburger span{
  width:18px;height:1.6px;background:var(--text);border-radius:2px;
}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background .22s ease-out,color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.btn::after{
  content:"";position:absolute;top:0;bottom:0;left:-40%;width:40%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.28),transparent);
  transform:translateX(-120%);
  transition:transform .3s ease-out;
}
.btn:hover::after{transform:translateX(320%);}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--glow-primary);}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);}
.btn-primary:active{background:var(--primary-active);transform:translateY(0);}
.btn-ghost{
  background:transparent;border-color:rgba(63,217,200,.45);color:var(--accent);
}
.btn-ghost:hover{
  border-color:var(--accent);
  box-shadow:0 0 0 1px rgba(63,217,200,.35),0 8px 22px rgba(63,217,200,.16);
  transform:translateY(-2px);
}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none;box-shadow:none;}
.btn-block{width:100%;}

/* ---------- 通用板块 ---------- */
main{position:relative;z-index:1;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head h2{font-size:32px;}
.section-head p{margin-top:12px;color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.1em;color:var(--accent);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 10px rgba(63,217,200,.8);
  animation:twinkle 3s ease-in-out infinite;
}
@keyframes twinkle{0%,100%{opacity:.5;}50%{opacity:1;}}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-size:13px;color:var(--text-3);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  margin-bottom:26px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(140,160,220,.35);}
.breadcrumb .current{color:var(--text-2);}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 72px;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,27,.82) 0%,rgba(7,11,27,.92) 60%,var(--bg-deep) 100%);
}
.page-hero::after{
  content:"";position:absolute;top:-30%;right:-10%;width:60%;height:150%;
  background:radial-gradient(closest-side,rgba(124,107,255,.22),transparent 72%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:center;}
.hero-copy h1{
  font-size:44px;line-height:1.2;margin-bottom:20px;letter-spacing:.005em;
}
.hero-copy h1 em{font-style:normal;color:var(--accent);}
.hero-lead{font-size:17px;color:var(--text-2);max-width:620px;line-height:1.85;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:36px;margin-top:40px;
  padding-top:26px;border-top:1px solid var(--line);
}
.hero-metrics div{min-width:118px;}
.hero-metrics strong{
  display:block;font-family:var(--mono);font-size:26px;font-weight:600;color:var(--text);
  line-height:1.2;
}
.hero-metrics span{font-size:12.5px;color:var(--text-3);}
.hero-panel{
  background:rgba(18,26,51,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(160,180,255,.16);
  border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow);
  position:relative;
}
.hero-badge{
  position:absolute;top:18px;right:18px;
  font-size:11.5px;letter-spacing:.06em;color:var(--star);
  border:1px solid rgba(255,201,107,.55);border-radius:999px;
  padding:3px 10px;background:rgba(255,201,107,.08);
}
.hero-panel h2{font-size:17px;margin-bottom:18px;color:var(--text);}
.plan-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding:14px 0;border-bottom:1px dashed rgba(140,160,220,.22);
}
.plan-row:last-child{border-bottom:0;padding-bottom:0;}
.plan-row .plan-name{font-size:14.5px;color:var(--text-2);}
.plan-row .plan-price{font-family:var(--mono);font-size:16px;color:var(--text);}
.plan-row .plan-price small{font-size:12px;color:var(--text-3);margin-left:4px;}
.plan-note{margin-top:16px;font-size:12.5px;color:var(--text-3);}

/* ---------- 速览条 ---------- */
.quick-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.quick-item{
  padding:30px 26px;
  border-left:1px solid var(--line);
  transition:background .24s ease-out;
}
.quick-item:first-child{border-left:0;}
.quick-item:hover{background:rgba(18,26,51,.5);}
.quick-no{
  font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.08em;
  display:block;margin-bottom:12px;
}
.quick-item h3{font-size:18px;margin-bottom:8px;}
.quick-item p{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ---------- FAQ 布局 ---------- */
.faq-layout{
  display:grid;grid-template-columns:250px 1fr;gap:48px;align-items:start;
}
.anchor-nav{position:sticky;top:104px;}
.anchor-nav .anchor-title{
  font-size:12px;letter-spacing:.1em;color:var(--text-3);margin-bottom:14px;
}
.anchor-nav a{
  display:block;padding:11px 0 11px 16px;
  border-left:2px solid var(--line);
  font-size:14px;color:var(--text-2);line-height:1.5;
}
.anchor-nav a:hover{color:var(--text);}
.anchor-nav a.active{
  border-left-color:var(--accent);color:var(--text);
  box-shadow:-1px 0 12px -4px rgba(63,217,200,.55);
}
.anchor-note{
  margin-top:26px;padding:16px 18px;
  background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius-card);
  font-size:13px;color:var(--text-3);line-height:1.7;
}
.anchor-note a{color:var(--accent);}

.faq-group{margin-bottom:52px;scroll-margin-top:104px;}
.faq-group:last-child{margin-bottom:0;}
.group-head{
  display:flex;align-items:center;gap:12px;margin-bottom:8px;
}
.group-head h3{font-size:21px;}
.group-count{
  font-family:var(--mono);font-size:12px;color:var(--text-3);
  border:1px solid var(--line);border-radius:999px;padding:2px 9px;
}
.group-head::after{
  content:"";flex:1;height:1px;background:var(--line);
}
.acc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 32px;}
.acc-item{
  position:relative;
  border-bottom:1px solid var(--line);
  border-left:2px solid transparent;
  padding-left:14px;
  transition:border-color .24s ease-out;
}
.acc-item.open{border-left-color:var(--accent);}
.acc-head{
  width:100%;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 0;background:none;border:0;cursor:pointer;
  color:var(--text);font-size:15.5px;font-weight:500;text-align:left;line-height:1.5;
}
.acc-head:hover{color:var(--primary-hover);}
.acc-icon{
  position:relative;flex:none;width:20px;height:20px;
}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;
  transition:transform .26s ease-out,background .26s ease-out;
}
.acc-icon::before{left:0;top:9px;width:20px;height:2px;}
.acc-icon::after{left:9px;top:0;width:2px;height:20px;}
.acc-item.open .acc-icon::before{background:var(--accent);}
.acc-item.open .acc-icon::after{transform:scaleY(0);background:var(--accent);}
.acc-body{
  max-height:0;overflow:hidden;
  transition:max-height .26s ease-out;
}
.acc-body p{
  font-size:15px;line-height:1.8;color:var(--text-2);
  padding-bottom:20px;
}
.acc-body p + p{margin-top:-6px;padding-top:0;}

/* ---------- 双列补充卡 ---------- */
.duo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.duo-card{
  background:var(--bg-elev);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.duo-card:hover{
  transform:translateY(-4px);
  border-color:rgba(160,180,255,.34);
  box-shadow:var(--shadow);
}
.duo-media{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.duo-media img{width:100%;height:100%;object-fit:cover;transition:filter .24s ease-out;}
.duo-card:hover .duo-media img{filter:brightness(1.08);}
.duo-body{padding:24px;}
.duo-body h3{font-size:19px;margin-bottom:10px;}
.duo-body > p{font-size:14.5px;color:var(--text-2);line-height:1.75;}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--text-2);line-height:1.6;
}
.check-list li::before{
  content:"";flex:none;width:14px;height:14px;margin-top:5px;border-radius:50%;
  border:1px solid rgba(63,217,200,.6);
  background:radial-gradient(circle at 50% 50%,var(--accent) 0 3px,transparent 3.5px);
}
.check-list li b{color:var(--text);font-weight:500;}
.check-list li.muted{opacity:.55;text-decoration:line-through;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid rgba(160,180,255,.16);
  border-radius:20px;
  padding:60px 56px;
  background-image:url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,11,27,.9) 30%,rgba(11,18,38,.72) 100%);
}
.cta-band::after{
  content:"";position:absolute;left:-15%;top:-60%;width:60%;height:220%;
  background:radial-gradient(closest-side,rgba(63,217,200,.18),transparent 70%);
}
.cta-inner{position:relative;z-index:2;max-width:640px;}
.cta-inner h2{font-size:32px;margin-bottom:14px;}
.cta-inner p{color:var(--text-2);font-size:16px;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:88px;
  background:#050814;
  border-top:1px solid var(--line);
  padding:64px 0 0;
  font-size:13.5px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{font-size:18px;margin-bottom:16px;}
.footer-brand p{color:var(--text-2);line-height:1.8;max-width:320px;}
.footer-domain{
  display:inline-block;margin-top:14px;
  font-family:var(--mono);font-size:12.5px;color:var(--text-3);
}
.footer-col h4{font-size:14px;margin-bottom:18px;color:var(--text);font-weight:600;}
.footer-col li{margin-bottom:11px;}
.footer-col a{color:var(--text-2);display:inline-block;transition:color .2s ease-out,transform .2s ease-out;}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid var(--line);
  color:var(--text-3);font-size:12.5px;
}
.footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom nav a{color:var(--text-3);}
.footer-bottom nav a:hover{color:var(--accent);}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease-out,transform .55s ease-out;}
.js .reveal.in{opacity:1;transform:none;}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:120;
  background:rgba(7,11,27,.98);
  backdrop-filter:blur(10px);
  transform:translateX(100%);
  transition:transform .3s ease-out;
  display:flex;flex-direction:column;
  padding:0 20px 24px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:68px;flex:none;
}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;color:var(--text);font-size:20px;cursor:pointer;line-height:1;
}
.drawer-group{padding:16px 0;border-bottom:1px solid var(--line);}
.drawer-group .drawer-label{
  font-size:12px;letter-spacing:.1em;color:var(--accent);margin-bottom:8px;
}
.drawer-group a{
  display:flex;align-items:center;min-height:48px;
  font-size:16px;color:var(--text-2);
}
.drawer-group a:hover,.drawer-group a.active{color:var(--text);}
.drawer-group a.active::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);
  margin-right:10px;box-shadow:0 0 8px rgba(63,217,200,.9);
}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container,.nav-inner,.topbar-inner{padding-left:24px;padding-right:24px;}
}
@media (max-width:1023px){
  .nav-menu,.nav-actions{display:none;}
  .hamburger{display:inline-flex;}
  .nav-inner{justify-content:space-between;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-copy h1{font-size:34px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .anchor-nav{
    position:static;
    display:flex;gap:10px;overflow-x:auto;padding-bottom:8px;
    scrollbar-width:none;
  }
  .anchor-nav::-webkit-scrollbar{display:none;}
  .anchor-nav .anchor-title,.anchor-note{display:none;}
  .anchor-nav a{
    border-left:0;border:1px solid var(--line);border-radius:999px;
    padding:8px 16px;white-space:nowrap;font-size:13.5px;
  }
  .anchor-nav a.active{border-color:var(--accent);background:rgba(63,217,200,.08);}
  .quick-strip{grid-template-columns:repeat(2,1fr);}
  .quick-item:nth-child(3){border-left:0;}
  .quick-item{border-top:1px solid var(--line);}
  .quick-item:nth-child(-n+2){border-top:0;}
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .topbar-notice{display:none;}
  .topbar-inner .topbar-actions a:first-child{display:none;}
  .hero-copy h1{font-size:30px;}
  .hero-lead{font-size:15.5px;}
  .hero-metrics{gap:24px;}
  .hero-metrics strong{font-size:22px;}
  .acc-grid{grid-template-columns:1fr;gap:0;}
  .duo-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .cta-band{padding:40px 24px;}
  .cta-inner h2{font-size:24px;}
  .btn{height:48px;}
  .btn-sm{height:42px;}
  .hero-cta .btn,.cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:480px){
  .container,.nav-inner,.topbar-inner{padding-left:18px;padding-right:18px;}
  .hero-copy h1{font-size:28px;}
  .quick-item{padding:24px 18px;}
  .duo-body{padding:18px;}
  .acc-item{padding-left:12px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .js .reveal{opacity:1;transform:none;}
}