/* roulang page: index */
:root{
  --bg:#0B0D12;
  --panel:#14171F;
  --panel-2:#1B1F2A;
  --line:rgba(255,255,255,.08);
  --stroke:rgba(255,255,255,.12);
  --purple:#6E4BFF;
  --purple-soft:rgba(110,75,255,.16);
  --cyan:#19F5C9;
  --orange:#FF7A1A;
  --text:#F2F4F8;
  --text-2:#A8B0C0;
  --text-3:#6C7689;
  --err:#FF5A5A;
  --r-card:14px;
  --r-sm:10px;
  --r-badge:6px;
  --shadow:0 0 0 1px var(--stroke), 0 10px 28px rgba(0,0,0,.45);
  --ease:.28s ease;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--cyan);text-decoration:none;transition:color var(--ease),border-color var(--ease)}
a:hover{color:var(--cyan)}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.01em;margin:0;line-height:1.32}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.num{font-family:"Bebas Neue","Oswald","DIN Alternate","Arial Narrow",sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.section{padding:96px 0}
.section-tight{padding:72px 0}
@media (max-width:991px){.section{padding:72px 0}.section-tight{padding:56px 0}}
@media (max-width:767px){.section{padding:56px 0}.section-tight{padding:48px 0}}
section[id]{scroll-margin-top:120px}
::selection{background:rgba(110,75,255,.4);color:#fff}

/* ============ 按钮 ============ */
.btn-lj{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  text-align:center;white-space:nowrap;
}
.btn-lj-primary{background:var(--purple);color:#fff}
.btn-lj-primary:hover,.btn-lj-primary:focus{background:#7d5eff;color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(110,75,255,.35)}
.btn-lj-primary:active{transform:translateY(0);box-shadow:none}
.btn-lj-ghost{background:transparent;color:var(--text);border-color:var(--stroke)}
.btn-lj-ghost:hover,.btn-lj-ghost:focus{color:var(--cyan);border-color:var(--cyan);transform:translateY(-1px)}
.btn-lj-ghost:active{transform:translateY(0)}
.btn-lj-lg{height:48px;padding:0 26px;font-size:16px}
.btn-lj-block{width:100%}
.btn-lj:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(110,75,255,.5)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--cyan);
  border-bottom:1px solid rgba(25,245,201,.45);padding-bottom:2px;
}
.link-more:hover{border-bottom-color:var(--cyan);color:#5dffe0}
.link-more i{font-size:12px;transition:transform var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ============ 容器 ============ */
.container{padding-left:24px;padding-right:24px}
@media (min-width:1200px){.container{max-width:1200px}}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding-left:16px;padding-right:16px}}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:var(--bg);border-bottom:1px solid var(--line)}
.brand-row{height:64px;overflow:hidden;transition:height var(--ease),opacity var(--ease);border-bottom:1px solid var(--line)}
.brand-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.site-header.is-scrolled .brand-row{height:0;opacity:0;border-bottom-color:transparent}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0}
.logo:hover{color:var(--text)}
.logo-mark{
  width:30px;height:30px;position:relative;flex:0 0 30px;border-radius:8px;
  background:linear-gradient(135deg,var(--purple) 0%,#3a24a8 100%);
  box-shadow:0 0 0 1px rgba(255,255,255,.14) inset;
}
.logo-mark::before,.logo-mark::after{content:"";position:absolute;background:var(--cyan)}
.logo-mark::before{left:8px;top:9px;width:14px;height:2px;transform:skewX(-28deg)}
.logo-mark::after{left:8px;top:17px;width:9px;height:2px;transform:skewX(-28deg);opacity:.75}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.01em}
.logo-text em{font-style:normal;color:var(--cyan)}
.brand-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--stroke);background:transparent;
  color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.icon-btn:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(25,245,201,.06)}
.icon-btn:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(110,75,255,.5)}
.channel-row{background:var(--bg);transition:background-color var(--ease)}
.site-header.is-scrolled .channel-row{background:rgba(11,13,18,.96);box-shadow:0 8px 24px rgba(0,0,0,.4)}
.channel-inner{display:flex;align-items:center;height:48px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-nav{display:flex;align-items:center;gap:8px;white-space:nowrap}
.channel-link{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:6px;
  font-size:14.5px;font-weight:500;color:var(--text-2);border-bottom:2px solid transparent;
  transition:color var(--ease),background-color var(--ease),border-color var(--ease);
}
.channel-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.channel-link.active{color:var(--text);background:var(--purple-soft);border-bottom-color:var(--cyan)}
@media (max-width:991px){
  .logo-text{font-size:17px}
  .channel-link{height:32px;padding:0 13px;font-size:14px}
}
@media (max-width:575px){
  .brand-actions .btn-lj{display:none}
  .brand-row{height:58px}
}

/* ============ Hero ============ */
.hero{position:relative;padding:64px 0 56px;overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(900px 420px at 78% 12%,rgba(110,75,255,.22),transparent 62%);
}
.hero .container{position:relative;z-index:2}
.hero-row{min-height:520px;align-items:center}
.hero-copy{max-width:560px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:999px;
  background:rgba(25,245,201,.08);border:1px solid rgba(25,245,201,.3);color:var(--cyan);
  font-size:13px;font-weight:500;margin-bottom:20px;
}
.hero-tag .pulse{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(25,245,201,.16)}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.18;margin:0 0 16px;
}
.hero h1 .hl{color:var(--cyan)}
.hero-rule{width:48px;height:3px;background:var(--cyan);border-radius:2px;margin:16px 0 18px}
.hero-sub{font-size:17px;color:var(--text-2);margin:0 0 28px;max-width:520px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;padding-top:20px;border-top:1px solid var(--line)}
.hero-trust span{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:var(--text-2)}
.hero-trust i{color:var(--cyan);font-size:12px}
.hero-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;min-height:460px;
  border:1px solid var(--stroke);
  background-image:linear-gradient(90deg,rgba(11,13,18,.96) 0%,rgba(11,13,18,.55) 46%,rgba(11,13,18,.18) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  box-shadow:0 0 0 1px rgba(255,255,255,.05), 0 18px 44px rgba(0,0,0,.55);
}
.hero-visual .grid-lines{
  position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
}
.hero-chip{
  position:absolute;left:22px;bottom:22px;display:inline-flex;align-items:center;gap:9px;
  padding:9px 15px;border-radius:var(--r-sm);background:rgba(20,23,31,.92);
  border:1px solid var(--stroke);font-size:13px;color:var(--text-2);
}
.hero-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);animation:blink 1.8s ease-in-out infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.hero-stat-float{
  position:absolute;right:22px;top:22px;text-align:right;
  padding:14px 18px;border-radius:var(--r-sm);background:rgba(11,13,18,.86);border:1px solid var(--stroke);
}
.hero-stat-float .n{font-size:36px;color:var(--cyan);line-height:1}
.hero-stat-float .t{font-size:12.5px;color:var(--text-3);margin-top:4px}
@media (max-width:991px){
  .hero{padding:44px 0 40px}
  .hero-row{min-height:auto}
  .hero-visual{min-height:340px;margin-top:8px}
}
@media (max-width:767px){
  .hero-visual{min-height:220px}
  .hero-stat-float .n{font-size:28px}
  .hero-trust{gap:14px 20px}
}

/* ============ 指标看板 ============ */
.kpi-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,var(--panel) 0%,rgba(20,23,31,.4) 100%);
}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.kpi-item{padding:34px 24px;border-left:1px solid var(--line);position:relative}
.kpi-item:first-child{border-left:0}
.kpi-bar{width:22px;height:2px;background:var(--cyan);margin-bottom:14px}
.kpi-item .num{font-size:clamp(34px,4vw,48px);line-height:1;color:var(--cyan);display:block}
.kpi-item .num small{font-size:.5em;margin-left:2px}
.kpi-label{font-size:13px;color:var(--text-2);margin-top:8px}
@media (max-width:767px){
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .kpi-item{border-left:0;border-top:1px solid var(--line);padding:24px 18px}
  .kpi-item:nth-child(1),.kpi-item:nth-child(2){border-top:0}
  .kpi-item:nth-child(odd){border-right:1px solid var(--line)}
}

/* ============ 区块标题 ============ */
.section-head{margin-bottom:32px;display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px}
.section-head .eyebrow{
  display:flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.18em;
  color:var(--cyan);font-weight:600;margin-bottom:12px;text-transform:uppercase;
}
.section-head .eyebrow::before{content:"";width:24px;height:2px;background:var(--cyan);display:block}
.section-title{font-size:clamp(24px,2.6vw,34px);margin:0 0 10px}
.section-sub{color:var(--text-2);font-size:15px;margin:0;max-width:660px}

/* ============ 服务矩阵 ============ */
.bento-card{
  display:block;height:100%;background:var(--panel);border:1px solid var(--stroke);
  border-radius:var(--r-card);overflow:hidden;color:var(--text);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.bento-card:hover{border-color:rgba(110,75,255,.55);transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.45);color:var(--text)}
.bento-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#1B1F2A,#0B0D12)}
.bento-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.bento-card:hover .bento-cover img{transform:scale(1.03)}
.bento-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,13,18,.15),rgba(11,13,18,.85))}
.bento-no{
  position:absolute;left:16px;top:14px;z-index:2;font-size:13px;font-weight:600;color:var(--cyan);
  letter-spacing:.14em;padding:3px 9px;border-radius:var(--r-badge);background:rgba(11,13,18,.7);border:1px solid rgba(25,245,201,.35);
}
.bento-body{padding:24px}
.card-title-lj{font-size:20px;margin:0 0 10px;transition:color var(--ease)}
.bento-card:hover .card-title-lj{color:var(--cyan)}
.card-desc{font-size:14.5px;color:var(--text-2);margin:0 0 18px;line-height:1.8}
.card-arrow{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:var(--text-3);transition:color var(--ease),gap var(--ease)}
.bento-card:hover .card-arrow{color:var(--cyan);gap:11px}
.mini-card{
  background:var(--panel);border:1px solid var(--stroke);border-left:3px solid var(--purple);
  border-radius:var(--r-card);padding:24px;height:100%;display:block;color:var(--text);
  transition:border-color var(--ease),border-left-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.mini-card.cyan{border-left-color:var(--cyan)}
.mini-card:hover{border-color:rgba(110,75,255,.55);border-left-color:var(--orange);transform:translateY(-2px);color:var(--text);box-shadow:0 10px 28px rgba(0,0,0,.45)}
.mini-card:hover .card-title-lj{color:var(--cyan)}
.mini-card .card-title-lj{font-size:18px}
.mini-no{font-size:12.5px;letter-spacing:.14em;color:var(--text-3);margin-bottom:12px;display:block}

/* ============ 结果对比 ============ */
.compare-wrap{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--stroke);border-radius:var(--r-card);overflow:hidden;background:var(--panel)}
.compare-col{padding:36px 32px}
.compare-col.left{background:rgba(11,13,18,.55)}
.compare-col.right{background:rgba(110,75,255,.06);border-left:1px solid var(--stroke)}
.compare-head{font-size:18px;margin:0 0 22px;display:flex;align-items:center;gap:10px}
.compare-col.left .compare-head{color:var(--text-2)}
.compare-item{display:flex;align-items:flex-start;gap:12px;padding:11px 0;font-size:15px;line-height:1.7;border-bottom:1px dashed rgba(255,255,255,.07)}
.compare-item:last-child{border-bottom:0}
.compare-col.left .compare-item{color:rgba(168,176,192,.6)}
.compare-col.left .compare-item::before{content:"";flex:0 0 14px;height:2px;background:var(--text-3);margin-top:12px;opacity:.6}
.compare-col.right .compare-item{color:var(--text)}
.compare-col.right .compare-item i{color:var(--cyan);font-size:13px;margin-top:8px;flex:0 0 auto}
.vs-badge{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:46px;height:46px;display:flex;align-items:center;justify-content:center;
  background:var(--bg);border:1px solid var(--cyan);color:var(--cyan);
  font-size:13px;font-weight:700;letter-spacing:.06em;
  clip-path:polygon(12% 0,100% 0,88% 100%,0 100%);z-index:3;
}
@media (max-width:991px){
  .compare-wrap{grid-template-columns:1fr}
  .compare-col.right{border-left:0;border-top:1px solid var(--stroke)}
  .compare-col{padding:28px 22px}
  .vs-badge{top:50%;left:50%}
}

/* ============ 动态列表 ============ */
.headline-card{
  display:flex;flex-direction:column;height:100%;background:var(--panel);border:1px solid var(--stroke);
  border-radius:var(--r-card);overflow:hidden;color:var(--text);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.headline-card:hover{border-color:rgba(110,75,255,.55);transform:translateY(-2px);color:var(--text);box-shadow:0 10px 28px rgba(0,0,0,.45)}
.headline-cover{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#1B1F2A,#0B0D12)}
.headline-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.headline-card:hover .headline-cover img{transform:scale(1.03)}
.headline-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.headline-title{font-size:19px;line-height:1.5;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--ease)}
.headline-card:hover .headline-title{color:var(--cyan)}
.headline-sum{font-size:14px;color:var(--text-2);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.75}
.headline-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:var(--r-badge);
  border:1px solid rgba(25,245,201,.35);color:var(--cyan);font-size:12px;font-weight:500;background:transparent;
}
.compact-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);color:var(--text);transition:opacity var(--ease)}
.compact-item:last-child{border-bottom:0}
.compact-item:hover{color:var(--text);opacity:.92}
.compact-item:hover .compact-title{color:var(--cyan)}
.compact-text{flex:1;min-width:0}
.compact-title{font-size:15px;line-height:1.55;margin:8px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--ease)}
.compact-sum{font-size:13px;color:var(--text-2);margin:0 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.7}
.compact-time{font-size:13px;color:var(--text-3)}
.compact-thumb{flex:0 0 120px;width:120px;height:80px;border-radius:var(--r-sm);overflow:hidden;background:linear-gradient(135deg,#1B1F2A,#0B0D12)}
.compact-thumb img{width:100%;height:100%;object-fit:cover}
.list-panel{background:var(--panel);border:1px solid var(--stroke);border-radius:var(--r-card);padding:10px 22px}
.empty-state{
  border:1px dashed var(--stroke);border-radius:var(--r-card);padding:52px 24px;text-align:center;background:var(--panel);
}
.empty-state i{font-size:44px;color:var(--text-3);display:block;margin-bottom:16px;line-height:1}
.empty-state p{font-size:14px;color:var(--text-3);margin:0 0 18px}
@media (max-width:767px){
  .compact-thumb{flex:0 0 96px;width:96px;height:66px}
}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-intro .section-title{margin-bottom:14px}
.faq-intro p{color:var(--text-2);font-size:15px;max-width:340px}
.lj-accordion .accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.lj-accordion .accordion-item:last-child{border-bottom:1px solid var(--line)}
.lj-accordion .accordion-button{
  background:transparent;color:var(--text);font-size:16.5px;font-weight:600;line-height:1.6;
  padding:17px 0;min-height:56px;box-shadow:none;display:flex;align-items:center;gap:16px;
  border-radius:0;transition:color var(--ease);
}
.lj-accordion .accordion-button:not(.collapsed){color:var(--cyan);background:transparent;box-shadow:none}
.lj-accordion .accordion-button:hover{color:var(--cyan)}
.lj-accordion .accordion-button:focus{box-shadow:none;border:0;outline:none}
.lj-accordion .accordion-button::after{display:none}
.lj-accordion .accordion-button::before{
  content:"+";order:9;margin-left:auto;color:var(--text-3);font-size:22px;font-weight:300;line-height:1;
  transition:color var(--ease),transform var(--ease);
}
.lj-accordion .accordion-button:not(.collapsed)::before{content:"−";color:var(--cyan)}
.faq-num{font-size:13px;color:var(--text-3);font-weight:500;flex:0 0 26px;letter-spacing:.04em}
.lj-accordion .accordion-body{color:var(--text-2);font-size:14.5px;line-height:1.85;padding:0 0 22px 32px;max-width:680px}
@media (max-width:991px){
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-intro p{max-width:none}
}

/* ============ 转化表单 ============ */
.cta-block{background:var(--panel-2);border:1px solid var(--stroke);border-radius:var(--r-card);padding:48px}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.cta-points li{display:flex;gap:11px;align-items:flex-start;font-size:15px;color:var(--text-2);padding:9px 0}
.cta-points li i{color:var(--cyan);font-size:13px;margin-top:9px;flex:0 0 auto}
.cta-contact{margin-top:24px;padding-top:22px;border-top:1px solid var(--line);font-size:14px;color:var(--text-2)}
.cta-contact span{color:var(--cyan);font-weight:500}
.form-panel{background:var(--panel);border:1px solid var(--stroke);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow)}
.form-status{
  border-radius:var(--r-sm);padding:11px 14px;font-size:14px;margin-bottom:20px;
  border:1px solid transparent;
}
.form-status.ok{background:rgba(25,245,201,.08);border-color:rgba(25,245,201,.4);color:var(--cyan)}
.form-status.err{background:rgba(255,90,90,.08);border-color:rgba(255,90,90,.4);color:var(--err)}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:500;color:var(--text-2);margin-bottom:8px}
.field .req{color:var(--cyan);margin-left:4px}
.field input,.field textarea,.field select{
  width:100%;height:46px;background:var(--bg);border:1px solid var(--stroke);border-radius:var(--r-sm);
  color:var(--text);padding:0 14px;font-size:15px;font-family:inherit;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.75}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--purple);box-shadow:0 0 0 2px rgba(110,75,255,.35);
}
.form-tip{font-size:13px;color:var(--text-3);margin:14px 0 0;line-height:1.7}
@media (max-width:991px){
  .cta-block{padding:30px 22px}
  .cta-grid{grid-template-columns:1fr;gap:30px}
  .form-panel{padding:22px}
}

/* ============ 页脚 ============ */
.site-footer{background:#0A0C11;border-top:1px solid var(--line);padding:64px 0 0;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-col h4{font-size:15px;font-weight:700;margin:0 0 12px;position:relative;padding-top:14px}
.footer-col h4::before{content:"";position:absolute;top:0;left:0;width:22px;height:2px;background:var(--cyan)}
.footer-col p,.footer-col li{font-size:14px;color:var(--text-2);line-height:1.85}
.footer-col ul li{margin-bottom:9px}
.footer-col ul a{color:var(--text-2)}
.footer-col ul a:hover{color:var(--cyan)}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;color:var(--text)}
.footer-logo:hover{color:var(--text)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px;
  align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--cyan)}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr;gap:28px}}

/* roulang page: article */
:root{
  --bg:#0B0D12;
  --panel:#14171F;
  --panel-2:#1B1F2A;
  --line:rgba(255,255,255,.08);
  --stroke:rgba(255,255,255,.12);
  --main:#6E4BFF;
  --main-soft:rgba(110,75,255,.16);
  --data:#19F5C9;
  --orange:#FF7A1A;
  --t1:#F2F4F8;
  --t2:#A8B0C0;
  --t3:#6C7689;
  --danger:#FF5A5A;
  --r-card:14px;
  --r-sm:10px;
  --r-badge:6px;
  --shadow-card:0 0 0 1px var(--stroke),0 10px 28px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px rgba(110,75,255,.55),0 14px 32px rgba(0,0,0,.5);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Bebas Neue","Oswald","DIN Alternate","PingFang SC",sans-serif;
  --sec:96px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .25s ease,border-color .25s ease}
a:hover{color:var(--data)}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35;color:var(--t1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
input,textarea,select{font-family:inherit;color:inherit}
:focus-visible{outline:2px solid rgba(110,75,255,.55);outline-offset:2px}
::selection{background:rgba(110,75,255,.4);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ============ 按钮 ============ */
.btn-lj{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .25s ease,border-color .25s ease,color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn-lj-primary{background:var(--main);color:#fff;box-shadow:0 8px 20px rgba(110,75,255,.28)}
.btn-lj-primary:hover{background:#7d5cff;color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(110,75,255,.34)}
.btn-lj-primary:active{transform:translateY(0);box-shadow:none}
.btn-lj-ghost{background:transparent;border-color:var(--stroke);color:var(--t1)}
.btn-lj-ghost:hover{border-color:var(--data);color:var(--data);transform:translateY(-1px)}
.btn-lj-ghost:active{transform:translateY(0)}
.btn-lj-lg{height:48px;padding:0 26px}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--stroke);background:transparent;color:var(--t2);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .25s ease,color .25s ease,background-color .25s ease;
}
.icon-btn:hover{border-color:var(--main);color:var(--data);background:rgba(110,75,255,.1)}

/* ============ 头部 ============ */
.site-header{position:relative;z-index:40;background:var(--bg);border-bottom:1px solid var(--line)}
.brand-row{padding:0}
.brand-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo,.footer-logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:4px;
  background:linear-gradient(135deg,var(--main) 0 52%,var(--data) 52% 100%);
  clip-path:polygon(0 0,100% 0,100% 68%,72% 100%,0 100%);
  position:relative;
}
.logo-mark::after{content:"";position:absolute;left:5px;right:5px;top:11px;height:2px;background:rgba(11,13,18,.85)}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.02em;color:var(--t1)}
.logo-text em{font-style:normal;color:var(--data)}
.brand-actions{display:flex;align-items:center;gap:12px}
.channel-row{border-top:1px solid var(--line);background:rgba(20,23,31,.6)}
.channel-inner{display:flex;align-items:center;min-height:48px}
.channel-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:8px 0}
.channel-nav::-webkit-scrollbar{display:none}
.channel-link{
  flex:0 0 auto;height:34px;line-height:34px;padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--t2);white-space:nowrap;
  border-bottom:2px solid transparent;transition:background-color .25s ease,color .25s ease,border-color .25s ease;
}
.channel-link:hover{color:var(--t1);background:rgba(255,255,255,.05)}
.channel-link.active{background:var(--main-soft);color:var(--t1);border-bottom-color:var(--data)}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:rgba(20,23,31,.35)}
.crumb-inner{display:flex;align-items:center;gap:10px;padding:14px 0;font-size:13px;color:var(--t3);flex-wrap:wrap}
.crumb-inner a{color:var(--t2)}
.crumb-inner a:hover{color:var(--data)}
.crumb-sep{color:var(--t3);opacity:.7}
.crumb-current{color:var(--t2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.article-head{padding:56px 0 32px;border-bottom:1px solid var(--line)}
.badge-cat{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;border-radius:var(--r-badge);
  border:1px solid rgba(25,245,201,.4);color:var(--data);
  font-size:12.5px;letter-spacing:.04em;background:rgba(25,245,201,.06);
}
.article-title{
  margin-top:18px;font-size:clamp(26px,3.4vw,38px);
  line-height:1.4;max-width:900px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--t3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--t3);opacity:.7}
.article-meta strong{color:var(--t2);font-weight:500}

/* ============ 布局 ============ */
.article-main{padding:56px 0 var(--sec)}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:start}

/* ============ 正文排版 ============ */
.article-body{max-width:800px;font-size:16px;color:#DDE2EC;line-height:1.85}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);margin:40px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:2px;background:var(--data)}
.article-body h3{font-size:20px;margin:30px 0 12px}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--t1)}
.article-body a{color:var(--data);border-bottom:1px solid rgba(25,245,201,.4)}
.article-body a:hover{border-bottom-color:var(--data)}
.article-body strong{color:#fff}
.article-body ul{margin:0 0 1.2em;padding:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:8px}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;background:var(--data);border-radius:1px}
.article-body ol{counter-reset:lj;margin:0 0 1.2em}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:lj}
.article-body ol li::before{
  content:counter(lj,decimal-leading-zero);position:absolute;left:0;top:0;
  font-family:var(--font-num);font-size:15px;color:var(--data);letter-spacing:.06em;
}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;border-left:3px solid var(--main);
  background:var(--panel);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:24px 0 8px;width:100%;object-fit:cover}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--t3);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px}
.article-body .table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:var(--r-sm)}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.article-body th{border-bottom:1px solid var(--stroke);font-weight:600;color:var(--t1)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body code{background:var(--panel-2);padding:2px 6px;border-radius:4px;font-size:14px;color:var(--data)}

.empty-box{
  border:1px dashed var(--stroke);border-radius:var(--r-card);background:var(--panel);
  padding:48px 24px;text-align:center;
}
.empty-box i{font-size:40px;color:var(--t3)}
.empty-box p{margin:14px 0 20px;color:var(--t2);font-size:14px}

/* ============ 文末操作区 ============ */
.article-foot{
  margin-top:44px;padding:22px;border:1px solid var(--stroke);border-radius:var(--r-card);
  background:var(--panel);display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:space-between;
}
.article-foot .foot-note{font-size:13.5px;color:var(--t3);margin:0}
.article-foot .foot-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 侧栏 ============ */
.side-col{position:sticky;top:24px;display:flex;flex-direction:column;gap:16px}
.side-card{border:1px solid var(--stroke);border-radius:var(--r-card);background:var(--panel);padding:22px}
.side-card h3{font-size:15px;letter-spacing:.02em;padding-top:10px;position:relative;margin-bottom:14px}
.side-card h3::before{content:"";position:absolute;top:0;left:0;width:26px;height:2px;background:var(--data)}
.side-list li+li{margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;color:var(--t2)}
.side-list a:hover{color:var(--data)}
.side-list i{font-size:11px;color:var(--t3)}
.side-meta{font-size:13px;color:var(--t3);margin:0 0 4px}
.side-value{font-family:var(--font-num);font-size:26px;color:var(--data);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.side-card .btn-lj{width:100%;margin-top:16px}

/* ============ 相关推荐 ============ */
.related{padding:0 0 var(--sec)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px)}
.sec-head .sec-sub{font-size:14px;color:var(--t2);margin-top:10px;max-width:60ch}
.sec-link{
  font-size:14px;color:var(--t2);border-bottom:1px solid rgba(168,176,192,.45);
  padding-bottom:2px;white-space:nowrap;
}
.sec-link:hover{color:var(--data);border-bottom-color:var(--data)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card-lj{
  display:flex;flex-direction:column;height:100%;
  border:1px solid var(--stroke);border-radius:var(--r-card);background:var(--panel);
  overflow:hidden;transition:box-shadow .3s ease,transform .3s ease,border-color .3s ease;
}
.card-lj:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(110,75,255,.55)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#1B1F2A,#0B0D12)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card-lj:hover .card-media img{transform:scale(1.03)}
.card-body-lj{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title-lj{
  font-size:17px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-lj:hover .card-title-lj{color:var(--data)}
.card-sum{
  font-size:13.5px;color:var(--t2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--t3)}

/* ============ CTA ============ */
.cta-sec{padding:0 0 var(--sec)}
.cta-panel{
  border:1px solid var(--stroke);border-radius:var(--r-card);
  background:linear-gradient(90deg,rgba(110,75,255,.16),rgba(11,13,18,.2)),var(--panel);
  padding:44px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:36px;align-items:center;
}
.cta-panel h2{font-size:clamp(22px,2.4vw,30px)}
.cta-panel p.lead{margin-top:14px;color:var(--t2);font-size:15px;max-width:52ch}
.cta-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.tag-lj{
  font-size:12.5px;color:var(--t2);border:1px solid var(--stroke);border-radius:var(--r-badge);
  padding:5px 10px;background:rgba(255,255,255,.02);
}
.form-card{border:1px solid var(--stroke);border-radius:var(--r-card);background:var(--bg);padding:24px}
.form-row{margin-bottom:20px}
.form-row label{display:block;font-size:14px;font-weight:500;margin-bottom:8px;color:var(--t1)}
.form-row .req{color:var(--data);margin-left:4px}
.form-control-lj{
  width:100%;height:46px;border-radius:var(--r-sm);background:var(--bg);
  border:1px solid var(--stroke);color:var(--t1);padding:0 14px;font-size:15px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
textarea.form-control-lj{height:120px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-control-lj::placeholder{color:var(--t3)}
.form-control-lj:focus{outline:none;border-color:var(--main);box-shadow:0 0 0 2px rgba(110,75,255,.35)}
.form-note{font-size:12.5px;color:var(--t3);margin-top:12px}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:var(--panel);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer-col h4{font-size:15px;padding-top:12px;position:relative;margin-bottom:16px}
.footer-col h4::before{content:"";position:absolute;top:0;left:0;width:26px;height:2px;background:var(--main)}
.footer-col p{font-size:14px;color:var(--t2);margin-top:14px;line-height:1.85;max-width:44ch}
.footer-col ul li{font-size:14px;color:var(--t2);margin-bottom:10px}
.footer-col ul li a{color:var(--t2)}
.footer-col ul li a:hover{color:var(--data)}
.footer-logo .logo-text{font-size:18px}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--t3);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-grid{grid-template-columns:minmax(0,1fr) 260px;gap:32px}
}
@media (max-width:991.98px){
  :root{--sec:72px}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .side-col{position:static;order:2}
  .article-body{max-width:100%}
  .cta-panel{grid-template-columns:minmax(0,1fr);padding:32px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .channel-inner{overflow:hidden}
}
@media (max-width:767.98px){
  :root{--sec:56px}
  .container{padding:0 16px}
  .brand-inner{height:58px}
  .logo-text{font-size:17px}
  .article-head{padding:36px 0 24px}
  .article-main{padding:36px 0 var(--sec)}
  .article-title{-webkit-line-clamp:3}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .article-foot{flex-direction:column;align-items:flex-start}
  .article-foot .foot-actions{width:100%}
  .article-foot .btn-lj{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  .btn-lj{padding:0 18px;font-size:14.5px}
  .cta-panel{padding:24px}
  .form-card{padding:18px}
  .side-card{padding:18px}
}

/* roulang page: category1 */
:root{
  --bg:#0B0D12;
  --panel:#14171F;
  --panel-2:#1B1F2A;
  --line:rgba(255,255,255,.08);
  --stroke:rgba(255,255,255,.12);
  --text:#F2F4F8;
  --muted:#A8B0C0;
  --weak:#6C7689;
  --primary:#6E4BFF;
  --primary-soft:rgba(110,75,255,.16);
  --cyan:#19F5C9;
  --orange:#FF7A1A;
  --danger:#FF5A5A;
  --radius-card:14px;
  --radius-sm:10px;
  --radius-badge:6px;
  --shadow-card:0 0 0 1px var(--stroke), 0 10px 28px rgba(0,0,0,.45);
  --ease:.3s ease;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","Oswald","Bebas Neue","PingFang SC",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color var(--ease),border-color var(--ease);}
a:hover{color:var(--cyan);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid rgba(110,75,255,.55);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container{max-width:1280px;}}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);}
.section-head .lead{margin-top:14px;color:var(--muted);font-size:15px;max-width:720px;line-height:1.85;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;color:var(--cyan);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--cyan);display:inline-block;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(11,13,18,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(6px);
}
.brand-row{
  max-height:80px;overflow:hidden;
  border-bottom:1px solid var(--line);
  transition:max-height .3s ease,opacity .3s ease;
}
.site-header.scrolled .brand-row{max-height:0;opacity:0;border-bottom-color:transparent;}
.brand-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;}
.logo-mark{
  width:26px;height:26px;display:inline-block;position:relative;
  background:linear-gradient(135deg,var(--primary),#3A1FA8);
  clip-path:polygon(0 0,100% 0,100% 68%,72% 100%,0 100%);
}
.logo-mark::after{
  content:"";position:absolute;left:6px;right:6px;top:50%;height:2px;
  background:var(--cyan);transform:translateY(-50%);
}
.logo-text{font-size:19px;letter-spacing:.02em;color:var(--text);}
.logo-text em{font-style:normal;color:var(--cyan);}
.brand-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-sm);
  background:transparent;border:1px solid var(--stroke);color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;
  transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.icon-btn:hover{color:var(--cyan);border-color:rgba(25,245,201,.55);transform:translateY(-1px);}
.channel-row{background:rgba(20,23,31,.55);}
.channel-inner{display:flex;align-items:center;height:48px;}
.channel-nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.channel-link{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;
  font-size:14px;font-weight:500;color:var(--muted);
  border-radius:var(--radius-badge);border-bottom:2px solid transparent;
  transition:color var(--ease),background var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.channel-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.channel-link.active{
  color:var(--text);background:var(--primary-soft);border-bottom-color:var(--cyan);
}

/* ============ 按钮 ============ */
.btn-lj{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-lj-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(110,75,255,.28);}
.btn-lj-primary:hover{background:#7E5DFF;color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(110,75,255,.34);}
.btn-lj-primary:active{transform:translateY(0);box-shadow:none;}
.btn-lj-ghost{background:transparent;color:var(--text);border-color:var(--stroke);}
.btn-lj-ghost:hover{color:var(--cyan);border-color:rgba(25,245,201,.6);transform:translateY(-1px);}
.btn-lj-lg{height:48px;padding:0 26px;}
.btn-lj-block{width:100%;}

/* ============ 面包屑 ============ */
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--weak);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--weak);}
.crumb a:hover{color:var(--cyan);}
.crumb span.sep{color:rgba(255,255,255,.2);}
.crumb .current{color:var(--cyan);}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  min-height:320px;
  display:flex;align-items:center;
  background-image:linear-gradient(90deg,rgba(11,13,18,.97) 0%,rgba(11,13,18,.88) 42%,rgba(11,13,18,.5) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero-inner{padding:64px 0;max-width:640px;}
.cat-hero h1{font-size:clamp(28px,3.6vw,44px);margin-bottom:0;}
.h1-rule{width:48px;height:3px;background:var(--cyan);margin:16px 0 18px;}
.cat-hero p{color:var(--muted);font-size:16px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ============ 指标带 ============ */
.kpi-strip{background:var(--panel);border-bottom:1px solid var(--line);}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.kpi-item{padding:32px 24px;position:relative;}
.kpi-item + .kpi-item::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:1px;background:var(--line);
}
.kpi-top{width:24px;height:2px;background:var(--cyan);margin-bottom:14px;}
.kpi-num{
  font-family:var(--font-num);font-size:clamp(34px,3.4vw,46px);line-height:1;
  color:var(--cyan);font-variant-numeric:tabular-nums;letter-spacing:.01em;
}
.kpi-num small{font-size:15px;margin-left:6px;color:var(--muted);font-family:var(--font-cn);font-weight:500;}
.kpi-label{margin-top:10px;font-size:13px;color:var(--muted);}

/* ============ 能力条目清单 ============ */
.cap-rows{border-top:1px solid var(--line);}
.cap-row{
  display:grid;grid-template-columns:88px 1fr 56px;align-items:center;gap:20px;
  padding:28px 8px;border-bottom:1px solid var(--line);
  transition:background var(--ease),padding-left var(--ease);
}
.cap-row:hover{background:rgba(255,255,255,.025);padding-left:16px;}
.cap-no{
  font-family:var(--font-num);font-size:26px;color:var(--weak);
  font-variant-numeric:tabular-nums;transition:color var(--ease);
}
.cap-row:hover .cap-no{color:var(--cyan);}
.cap-body h3{font-size:19px;margin-bottom:6px;transition:color var(--ease);}
.cap-row:hover .cap-body h3{color:var(--cyan);}
.cap-body p{font-size:14px;color:var(--muted);max-width:760px;}
.cap-arrow{
  width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--stroke);
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
  justify-self:end;transition:color var(--ease),border-color var(--ease),transform var(--ease),background var(--ease);
}
.cap-row:hover .cap-arrow{color:var(--cyan);border-color:rgba(25,245,201,.5);transform:translateX(4px);background:rgba(25,245,201,.06);}

/* ============ 场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.scene-item{
  background:var(--panel);border-radius:var(--radius-card);padding:26px 26px 26px 30px;
  position:relative;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.scene-item::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:3px;
  background:var(--primary);transition:background var(--ease);
}
.scene-item:nth-child(even)::before{background:var(--cyan);}
.scene-item:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(110,75,255,.55),0 14px 30px rgba(0,0,0,.45);}
.scene-item:hover::before{background:var(--orange);}
.scene-item h3{font-size:18px;margin-bottom:8px;transition:color var(--ease);}
.scene-item:hover h3{color:var(--cyan);}
.scene-item p{font-size:14px;color:var(--muted);}

/* ============ 面板预览 ============ */
.preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.media-frame{
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  background:linear-gradient(135deg,rgba(110,75,255,.22),rgba(25,245,201,.08)),
             repeating-linear-gradient(45deg,rgba(255,255,255,.035) 0 8px,transparent 8px 16px);
  aspect-ratio:16/11;
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.media-frame:hover img{transform:scale(1.03);}
.preview-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
}
.preview-list li:last-child{border-bottom:0;}
.preview-list i{color:var(--cyan);font-size:14px;margin-top:6px;}
.preview-list strong{display:block;font-size:16px;margin-bottom:4px;}
.preview-list span{font-size:14px;color:var(--muted);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  font-size:13px;color:var(--muted);border:1px solid var(--stroke);
  border-radius:var(--radius-badge);transition:color var(--ease),border-color var(--ease);
}
.tag:hover{color:var(--cyan);border-color:rgba(25,245,201,.5);}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;--bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:var(--cyan);--bs-accordion-btn-color:var(--text);--bs-accordion-color:var(--muted);
  --bs-accordion-btn-focus-box-shadow:none;--bs-accordion-border-width:0;--bs-accordion-inner-border-radius:0;}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;}
.faq-acc .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  padding:18px 0;gap:14px;box-shadow:none;align-items:center;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--cyan);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;}
.acc-num{font-family:var(--font-num);font-size:14px;color:var(--weak);min-width:26px;font-variant-numeric:tabular-nums;}
.acc-q{flex:1;}
.faq-acc .accordion-button::after{
  content:"";width:16px;height:16px;flex:0 0 16px;margin-left:8px;
  background-image:linear-gradient(var(--cyan),var(--cyan)),linear-gradient(var(--cyan),var(--cyan));
  background-size:14px 2px,2px 14px;
  background-position:center center,center center;
  background-repeat:no-repeat;
  transition:background-size var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{
  background-image:linear-gradient(var(--cyan),var(--cyan)),linear-gradient(var(--cyan),var(--cyan));
  background-size:14px 2px,0 14px;
  transform:none;
}
.faq-acc .accordion-body{
  padding:0 0 20px 40px;color:var(--muted);font-size:14.5px;max-width:680px;
}
.faq-acc .accordion-collapse{border:0;}

/* ============ CTA 表单 ============ */
.cta-section{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-layout{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.cta-copy h2{font-size:clamp(24px,2.6vw,34px);}
.cta-copy p{color:var(--muted);margin-top:16px;font-size:15px;}
.cta-points{margin-top:28px;display:grid;gap:14px;}
.cta-points li{display:flex;gap:12px;font-size:14.5px;color:var(--muted);}
.cta-points i{color:var(--cyan);margin-top:6px;font-size:13px;}
.form-card{
  background:var(--panel-2);border-radius:var(--radius-card);padding:28px;
  box-shadow:var(--shadow-card);
}
.form-status{
  display:none;margin-bottom:20px;padding:12px 16px;border-radius:var(--radius-sm);
  font-size:14px;border:1px solid transparent;
}
.form-status.is-ok{display:block;color:var(--cyan);border-color:rgba(25,245,201,.45);background:rgba(25,245,201,.08);}
.form-status.is-error{display:block;color:var(--danger);border-color:rgba(255,90,90,.45);background:rgba(255,90,90,.08);}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:500;margin-bottom:8px;color:var(--text);}
.field .req{color:var(--cyan);margin-left:4px;}
.lj-input{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius-sm);
  background:var(--bg);border:1px solid var(--stroke);color:var(--text);
  font-size:14.5px;font-family:inherit;transition:border-color var(--ease),box-shadow var(--ease);
}
textarea.lj-input{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.lj-input::placeholder{color:var(--weak);}
.lj-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(110,75,255,.35);}
select.lj-input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.form-note{font-size:13px;color:var(--weak);margin-top:14px;}

/* ============ 页脚 ============ */
.site-footer{background:#080A0E;border-top:1px solid var(--line);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-col p{font-size:14px;color:var(--muted);max-width:360px;}
.footer-col h4{
  font-size:15px;margin-bottom:18px;padding-top:12px;position:relative;
}
.footer-col h4::before{content:"";position:absolute;top:0;left:0;width:24px;height:2px;background:var(--cyan);}
.footer-col ul li{font-size:14px;color:var(--muted);margin-bottom:10px;}
.footer-col ul li a{color:var(--muted);}
.footer-col ul li a:hover{color:var(--cyan);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:13px;color:var(--weak);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .section{padding:80px 0;}
  .faq-layout,.cta-layout{gap:36px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .kpi-item:nth-child(odd)::before{display:none;}
  .kpi-item:nth-child(n+3){border-top:1px solid var(--line);}
  .kpi-item + .kpi-item::before{top:24px;bottom:24px;}
  .scene-grid{grid-template-columns:1fr;}
  .preview-grid{grid-template-columns:1fr;gap:32px;}
  .faq-layout,.cta-layout{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .channel-inner{overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none;}
  .channel-inner::-webkit-scrollbar{display:none;}
  .channel-nav{flex-wrap:nowrap;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .cat-hero{min-height:280px;}
  .cat-hero-inner{padding:48px 0;}
  .cap-row{grid-template-columns:48px 1fr 40px;gap:14px;padding:22px 4px;}
  .cap-no{font-size:20px;}
  .cap-arrow{width:38px;height:38px;}
  .cap-body p{font-size:13.5px;}
  .kpi-item{padding:24px 16px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:575px){
  .hero-actions .btn-lj{width:100%;}
  .kpi-num{font-size:32px;}
}

/* roulang page: category2 */
:root{
  --bg:#0B0D12;
  --panel:#14171F;
  --panel-2:#1B1F2A;
  --line:rgba(255,255,255,.08);
  --stroke:rgba(255,255,255,.12);
  --primary:#6E4BFF;
  --primary-soft:rgba(110,75,255,.16);
  --cyan:#19F5C9;
  --orange:#FF7A1A;
  --text:#F2F4F8;
  --muted:#A8B0C0;
  --weak:#6C7689;
  --danger:#FF5A5A;
  --radius:14px;
  --radius-sm:10px;
  --radius-badge:6px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.12),0 10px 28px rgba(0,0,0,.45);
  --container:1200px;
  --gap-section:96px;
  --num-font:'Oswald','DIN Alternate','Arial Narrow',system-ui,sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .28s ease,border-color .28s ease,background-color .28s ease,opacity .28s ease;}
a:hover{color:var(--cyan);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{font-weight:700;letter-spacing:-0.01em;line-height:1.3;margin:0;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(110,75,255,.5);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1400px){
  .container{max-width:1280px;}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(11,13,18,.94);
  border-bottom:1px solid var(--line);
}
.brand-row{
  height:64px;
  overflow:hidden;
  display:flex;
  align-items:center;
  border-bottom:1px solid var(--line);
  transition:height .3s ease,opacity .3s ease,border-color .3s ease;
}
.site-header.is-scrolled .brand-row{
  height:0;
  opacity:0;
  border-bottom-color:transparent;
}
.brand-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:26px;height:26px;flex:0 0 26px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:-0.01em;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--cyan);margin-left:1px;}
.brand-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;
  background:transparent;border:1px solid var(--stroke);color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:border-color .28s ease,color .28s ease,transform .28s ease;
}
.icon-btn:hover{border-color:var(--cyan);color:var(--cyan);}

.btn-lj{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .28s ease,border-color .28s ease,color .28s ease,transform .28s ease,box-shadow .28s ease,filter .28s ease;
}
.btn-lj-primary{background:var(--primary);color:#fff;}
.btn-lj-primary:hover{background:var(--primary);color:#fff;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 8px 18px rgba(110,75,255,.35);}
.btn-lj-primary:active{transform:translateY(0);box-shadow:none;}
.btn-lj-ghost{background:transparent;border-color:var(--stroke);color:var(--text);}
.btn-lj-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-1px);}
.btn-lj-lg{height:48px;padding:0 26px;}
.btn-lj-block{width:100%;}

.channel-row{height:48px;display:flex;align-items:center;}
.channel-inner{display:flex;align-items:center;}
.channel-nav{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;scrollbar-width:none;width:100%;
}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:34px;padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--muted);
  white-space:nowrap;
  transition:color .28s ease,background-color .28s ease;
}
.channel-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.channel-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-7px;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .28s ease;
}
.channel-link.active{background:var(--primary-soft);color:var(--text);}
.channel-link.active::after{transform:scaleX(1);}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  min-height:320px;
  display:flex;
  align-items:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-color:#0d1017;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,13,18,.97) 0%,rgba(11,13,18,.9) 40%,rgba(11,13,18,.42) 100%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:52px;padding-bottom:52px;}
.crumb{font-size:13px;color:var(--weak);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb a{color:var(--weak);}
.crumb a:hover{color:var(--cyan);}
.crumb .sep{color:rgba(255,255,255,.2);}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,42px);
  max-width:760px;
  margin-bottom:14px;
}
.cat-hero h1 .hl{color:var(--cyan);}
.cat-hero .lead{
  max-width:640px;
  color:var(--muted);
  font-size:16.5px;
  margin-bottom:26px;
}
.hero-line{width:48px;height:3px;background:var(--cyan);margin-bottom:20px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 通用板块 ============ */
.section{padding-top:var(--gap-section);padding-bottom:0;}
.section:last-of-type{padding-bottom:var(--gap-section);}
.section-head{margin-bottom:32px;}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);font-weight:600;margin-bottom:12px;
}
.section-tag::before{content:"";width:20px;height:2px;background:var(--cyan);display:inline-block;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:10px;}
.section-head p{color:var(--muted);max-width:720px;font-size:15.5px;}

.num{font-family:var(--num-font);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ============ 指标带 ============ */
.kpi-strip{
  margin-top:-42px;
  position:relative;
  z-index:5;
  background:var(--panel);
  border:1px solid var(--stroke);
  border-radius:var(--radius);
  display:grid;
  grid-template-columns:repeat(4,1fr);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.kpi-item{padding:26px 24px;position:relative;}
.kpi-item+.kpi-item{border-left:1px solid var(--line);}
.kpi-item::before{content:"";position:absolute;top:26px;left:24px;width:20px;height:2px;background:var(--cyan);}
.kpi-value{
  font-family:var(--num-font);font-variant-numeric:tabular-nums;
  font-size:clamp(30px,3.4vw,44px);
  line-height:1.1;color:var(--cyan);margin-top:18px;
}
.kpi-value small{font-size:16px;margin-left:4px;color:var(--muted);font-family:inherit;}
.kpi-label{font-size:13px;color:var(--muted);margin-top:6px;}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:8px;}
.tl-item{
  position:relative;
  padding-left:88px;
  padding-bottom:34px;
}
.tl-item::after{
  content:"";position:absolute;left:19px;top:44px;bottom:0;width:1px;
  background:linear-gradient(180deg,rgba(25,245,201,.45),rgba(25,245,201,0));
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::after{display:none;}
.tl-dot{
  position:absolute;left:0;top:4px;
  width:40px;height:40px;border-radius:50%;
  background:var(--bg);
  border:1px solid rgba(25,245,201,.45);
  color:var(--cyan);
  font-family:var(--num-font);font-size:15px;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.tl-body{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px 26px;
  transition:border-color .28s ease,transform .28s ease;
}
.tl-body:hover{border-color:rgba(110,75,255,.55);transform:translateY(-2px);}
.tl-body h3{font-size:20px;margin-bottom:8px;}
.tl-body p{color:var(--muted);font-size:15px;margin-bottom:8px;}
.tl-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 10px;border-radius:var(--radius-badge);
  font-size:12px;color:var(--muted);
  border:1px solid var(--stroke);background:rgba(255,255,255,.02);
}
.chip.hot{color:var(--orange);border-color:rgba(255,122,26,.4);}
.chip.on{color:var(--cyan);border-color:rgba(25,245,201,.35);}

/* ============ 图文能力块 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;}
.split-media{
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-card);
  background:linear-gradient(135deg,#1B1F2A,#0B0D12);
}
.split-media img{width:100%;height:340px;transition:transform .35s ease;}
.split-media:hover img{transform:scale(1.03);}
.feature-list{margin-top:22px;}
.feature-list li{
  display:flex;gap:12px;padding:12px 0;
  border-bottom:1px dashed var(--line);
  color:var(--muted);font-size:15px;
}
.feature-list li:last-child{border-bottom:0;}
.feature-list i{color:var(--cyan);margin-top:6px;font-size:13px;}

/* ============ 场景卡片 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px 24px 28px;
  transition:border-color .28s ease,transform .28s ease,box-shadow .28s ease;
}
.scene-card::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
  transition:background-color .28s ease;
}
.scene-card:nth-child(even)::before{background:var(--cyan);}
.scene-card:hover{border-color:rgba(110,75,255,.55);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.scene-card:hover::before{background:var(--orange);}
.scene-card h3{font-size:19px;margin-bottom:10px;}
.scene-card:hover h3{color:var(--cyan);}
.scene-card p{color:var(--muted);font-size:14.5px;margin-bottom:16px;}

.arrow-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--text);
  border-bottom:1px solid rgba(255,255,255,.25);
  padding-bottom:2px;
  transition:color .28s ease,border-color .28s ease,border-bottom-width .28s ease;
}
.arrow-link:hover{color:var(--cyan);border-color:var(--cyan);}
.arrow-link i{font-size:12px;transition:transform .28s ease;}
.arrow-link:hover i{transform:translateX(3px);}

/* ============ 对比条 ============ */
.duo{display:grid;grid-template-columns:1fr 1px 1fr;gap:32px;align-items:stretch;}
.duo-line{background:var(--line);position:relative;}
.duo-vs{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) rotate(45deg);
  width:40px;height:40px;border-radius:10px;
  background:var(--panel-2);border:1px solid rgba(25,245,201,.4);
  display:flex;align-items:center;justify-content:center;
}
.duo-vs span{
  transform:rotate(-45deg);
  font-family:var(--num-font);font-size:14px;color:var(--cyan);letter-spacing:.04em;
}
.duo-col h3{font-size:19px;margin-bottom:18px;}
.duo-col ul li{
  display:flex;gap:12px;align-items:flex-start;
  padding:9px 0;font-size:15px;
}
.duo-col.before ul li{color:rgba(168,176,192,.6);}
.duo-col.before ul li::before{content:"—";color:rgba(168,176,192,.5);flex:0 0 auto;line-height:1.7;}
.duo-col.after ul li{color:var(--text);}
.duo-col.after ul li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--cyan);font-size:12px;margin-top:8px;flex:0 0 auto;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;}
.faq-aside h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px;}
.faq-aside p{color:var(--muted);font-size:15px;}
.lj-accordion .accordion-item{
  background:transparent;border:0;border-top:1px solid var(--line);border-radius:0;
}
.lj-accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.lj-accordion .accordion-header{background:transparent;border:0;}
.lj-accordion .accordion-button{
  background:transparent;color:var(--text);
  font-size:16.5px;font-weight:600;letter-spacing:-0.01em;
  padding:18px 44px 18px 0;min-height:56px;
  box-shadow:none;border-radius:0;
  display:flex;align-items:center;
}
.lj-accordion .accordion-button:not(.collapsed){color:var(--cyan);background:transparent;box-shadow:none;}
.lj-accordion .accordion-button:focus{box-shadow:none;border-color:transparent;}
.lj-accordion .accordion-button::after{
  display:none;
}
.lj-accordion .accordion-button .faq-no{
  font-family:var(--num-font);font-size:13px;color:var(--weak);
  margin-right:14px;letter-spacing:.04em;
}
.lj-accordion .accordion-button .faq-sign{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;
}
.lj-accordion .accordion-button .faq-sign::before,
.lj-accordion .accordion-button .faq-sign::after{
  content:"";position:absolute;background:var(--muted);transition:background-color .28s ease,transform .28s ease;
}
.lj-accordion .accordion-button .faq-sign::before{left:0;top:6px;width:14px;height:2px;}
.lj-accordion .accordion-button .faq-sign::after{left:6px;top:0;width:2px;height:14px;}
.lj-accordion .accordion-button:not(.collapsed) .faq-sign::before{background:var(--cyan);}
.lj-accordion .accordion-button:not(.collapsed) .faq-sign::after{transform:scaleY(0);background:var(--cyan);}
.lj-accordion .accordion-body{
  padding:0 60px 22px 36px;color:var(--muted);font-size:15px;max-width:680px;
}

/* ============ CTA + 表单 ============ */
.cta-wrap{
  background:var(--panel);
  border:1px solid var(--stroke);
  border-radius:var(--radius);
  padding:40px;
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:48px;
  box-shadow:var(--shadow-card);
}
.cta-copy h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px;}
.cta-copy p{color:var(--muted);font-size:15.5px;}
.cta-points{margin-top:22px;}
.cta-points li{
  display:flex;gap:10px;align-items:flex-start;
  padding:7px 0;font-size:14.5px;color:var(--muted);
}
.cta-points i{color:var(--cyan);font-size:12px;margin-top:8px;}

.status-bar{
  display:none;
  padding:12px 16px;border-radius:var(--radius-sm);
  font-size:14px;margin-bottom:20px;
}
.status-bar.is-ok{display:block;background:rgba(25,245,201,.1);border:1px solid rgba(25,245,201,.4);color:var(--cyan);}
.status-bar.is-err{display:block;background:rgba(255,90,90,.1);border:1px solid rgba(255,90,90,.4);color:var(--danger);}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:500;color:var(--text);}
.field label .req{color:var(--cyan);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;
  background:var(--bg);
  border:1px solid var(--stroke);
  border-radius:var(--radius-sm);
  color:var(--text);
  font-size:15px;
  padding:0 14px;height:46px;
  transition:border-color .28s ease,box-shadow .28s ease;
  font-family:inherit;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--weak);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(110,75,255,.35);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.form-note{font-size:13px;color:var(--weak);margin-top:14px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--gap-section);
  background:#090B0F;
  border-top:1px solid var(--line);
  padding-top:64px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-col h4{
  font-size:15px;margin-bottom:18px;position:relative;padding-top:12px;
}
.footer-col h4::before{content:"";position:absolute;top:0;left:0;width:22px;height:2px;background:var(--cyan);}
.footer-col ul li{margin-bottom:10px;font-size:14.5px;color:var(--muted);}
.footer-col ul li a{color:var(--muted);}
.footer-col ul li a:hover{color:var(--cyan);}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-col p{font-size:14.5px;color:var(--muted);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--weak);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .scene-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  :root{--gap-section:72px;}
  .kpi-strip{grid-template-columns:repeat(2,1fr);margin-top:-28px;}
  .kpi-item+.kpi-item{border-left:0;}
  .kpi-item:nth-child(odd){border-right:1px solid var(--line);}
  .kpi-item:nth-child(n+3){border-top:1px solid var(--line);}
  .split{grid-template-columns:1fr;gap:28px;}
  .split-media img{height:280px;}
  .duo{grid-template-columns:1fr;gap:24px;}
  .duo-line{height:1px;width:100%;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .cta-wrap{grid-template-columns:1fr;gap:32px;padding:28px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:767px){
  :root{--gap-section:56px;}
  body{font-size:15.5px;}
  .container{padding-left:16px;padding-right:16px;}
  .cat-hero{min-height:280px;}
  .cat-hero .container{padding-top:40px;padding-bottom:40px;}
  .hero-actions .btn-lj{flex:1 1 auto;}
  .scene-grid{grid-template-columns:1fr;}
  .tl-item{padding-left:64px;}
  .tl-dot{width:32px;height:32px;font-size:13px;}
  .tl-item::after{left:15px;}
  .split-media img{height:220px;}
  .form-grid{grid-template-columns:1fr;}
  .lj-accordion .accordion-body{padding-right:24px;padding-left:30px;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-actions .btn-lj{padding:0 16px;font-size:14px;}
}

/* roulang page: category3 */
:root{
  --bg:#0B0D12;
  --panel:#14171F;
  --panel-2:#1B1F2A;
  --line:rgba(255,255,255,.08);
  --stroke:rgba(255,255,255,.12);
  --primary:#6E4BFF;
  --primary-soft:rgba(110,75,255,.16);
  --primary-line:rgba(110,75,255,.55);
  --cyan:#19F5C9;
  --orange:#FF7A1A;
  --text:#F2F4F8;
  --muted:#A8B0C0;
  --dim:#6C7689;
  --danger:#FF5A5A;
  --r-card:14px;
  --r-sm:10px;
  --r-badge:6px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.10), 0 10px 28px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px rgba(110,75,255,.55), 0 14px 34px rgba(0,0,0,.5);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Bebas Neue","Oswald","DIN Alternate","Arial Narrow",var(--font-cn);
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--text);
  --bs-primary:#6E4BFF;
  --bs-link-color:#19F5C9;
  --bs-link-hover-color:#19F5C9;
}

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

html{ scroll-behavior:smooth; }

body{
  margin:0;
  background-color:#0B0D12;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size:72px 72px;
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }
a{ color:var(--cyan); text-decoration:none; transition:color .28s ease; }
a:hover{ color:var(--cyan); }
button{ font-family:inherit; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-weight:700; letter-spacing:-.01em; line-height:1.3; }

:focus-visible{ outline:2px solid rgba(110,75,255,.55); outline-offset:2px; }

/* ---------- 容器 ---------- */
.container,
.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1400px){
  .container,.container-lg,.container-xl,.container-xxl{ max-width:1280px; }
}

/* ---------- 头部导航 ---------- */
.site-header{ position:sticky; top:0; z-index:1030; }
.brand-row{
  height:64px;
  background:rgba(11,13,18,.94);
  border-bottom:1px solid var(--line);
}
.brand-inner{ display:flex; align-items:center; justify-content:space-between; height:64px; }
.logo{ display:inline-flex; align-items:center; gap:10px; text-decoration:none; }
.logo-mark{
  width:26px; height:26px; flex:0 0 26px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  clip-path:polygon(0 0,100% 0,100% 64%,64% 100%,0 100%);
  position:relative;
}
.logo-mark::after{
  content:""; position:absolute; left:6px; top:11px; width:14px; height:2px;
  background:rgba(11,13,18,.85);
}
.logo-text{ font-size:20px; font-weight:700; color:var(--text); letter-spacing:.02em; }
.logo-text em{ font-style:normal; color:var(--cyan); }
.brand-actions{ display:flex; align-items:center; gap:12px; }
.icon-btn{
  width:40px; height:40px; display:inline-flex; align-items:center; justify-content:center;
  background:transparent; border:1px solid var(--stroke); border-radius:var(--r-sm);
  color:var(--muted); cursor:pointer; transition:all .28s ease;
}
.icon-btn:hover{ color:var(--cyan); border-color:var(--cyan); }

.channel-row{
  height:48px;
  background:rgba(11,13,18,.9);
  border-bottom:1px solid var(--line);
}
.channel-inner{ display:flex; align-items:center; height:48px; overflow-x:auto; scrollbar-width:none; }
.channel-inner::-webkit-scrollbar{ display:none; }
.channel-nav{ display:flex; gap:8px; }
.channel-link{
  display:inline-flex; align-items:center; height:48px; padding:0 16px;
  font-size:15px; font-weight:500; color:var(--muted); text-decoration:none;
  border-bottom:2px solid transparent; white-space:nowrap;
  transition:color .28s ease, background .28s ease, border-color .28s ease;
}
.channel-link:hover{ color:var(--text); }
.channel-link.active{ color:var(--text); background:var(--primary-soft); border-bottom-color:var(--cyan); }

/* ---------- 按钮 ---------- */
.btn-lj{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:44px; padding:0 22px; border-radius:var(--r-sm);
  font-size:15px; font-weight:600; letter-spacing:.02em;
  border:1px solid transparent; text-decoration:none; cursor:pointer;
  transition:background .3s ease, color .3s ease, border-color .3s ease, transform .3s ease, box-shadow .3s ease;
}
.btn-lj-primary{ background:var(--primary); color:#fff; }
.btn-lj-primary:hover{ background:#7d5dff; color:#fff; transform:translateY(-1px); box-shadow:0 8px 20px rgba(110,75,255,.32); }
.btn-lj-primary:active{ transform:translateY(0); box-shadow:none; }
.btn-lj-ghost{ background:transparent; color:var(--text); border-color:var(--stroke); }
.btn-lj-ghost:hover{ color:var(--cyan); border-color:var(--cyan); transform:translateY(-1px); }
.btn-lj-lg{ height:48px; padding:0 26px; }

.text-link{
  display:inline-flex; align-items:center; gap:8px;
  color:var(--muted); font-size:14px; font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.28); padding-bottom:2px;
  transition:color .28s ease, border-color .28s ease;
}
.text-link:hover{ color:var(--cyan); border-color:var(--cyan); }

/* ---------- 通用板块 ---------- */
.section{ padding:96px 0; position:relative; }
.section-alt{ background:rgba(20,23,31,.55); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-head{ margin-bottom:32px; max-width:760px; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; letter-spacing:.16em; color:var(--cyan); margin-bottom:12px;
}
.eyebrow::before{ content:""; width:22px; height:2px; background:var(--cyan); }
.section-head h2{ font-size:clamp(24px,2.6vw,34px); }
.section-head p{ margin:14px 0 0; color:var(--muted); font-size:16px; }

.tag{
  display:inline-flex; align-items:center; height:26px; padding:0 10px;
  border-radius:var(--r-badge); font-size:12px; letter-spacing:.06em;
  color:var(--orange); border:1px solid rgba(255,122,26,.42); background:rgba(255,122,26,.08);
}
.tag-cyan{ color:var(--cyan); border-color:rgba(25,245,201,.42); background:rgba(25,245,201,.08); }

/* ---------- 分类 Hero ---------- */
.page-hero{
  position:relative;
  min-height:320px;
  display:flex;
  align-items:center;
  padding:64px 0 60px;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(90deg, rgba(11,13,18,.97) 0%, rgba(11,13,18,.9) 42%, rgba(11,13,18,.52) 100%);
}
.hero-inner{ position:relative; z-index:2; }
.crumb{ display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:13px; color:var(--dim); margin-bottom:18px; }
.crumb a{ color:var(--muted); }
.crumb a:hover{ color:var(--cyan); }
.crumb .sep{ color:var(--dim); }
.hero-title{
  font-size:clamp(28px,3.8vw,44px);
  margin:16px 0 0;
  max-width:820px;
}
.hero-anchor{ width:48px; height:3px; background:var(--cyan); margin:16px 0 18px; }
.hero-desc{ max-width:640px; color:var(--muted); font-size:16px; margin:0 0 28px; }
.hero-btns{ display:flex; flex-wrap:wrap; gap:12px; }

/* ---------- 指标带 ---------- */
.metrics-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:rgba(20,23,31,.6);
}
.metrics{ display:grid; grid-template-columns:repeat(4,1fr); }
.metric{ padding:30px 24px; }
.metric + .metric{ border-left:1px solid var(--line); }
.metric .bar{ width:24px; height:2px; background:var(--stroke); margin-bottom:14px; }
.metric .num{
  font-family:var(--font-num);
  font-size:clamp(30px,3.4vw,44px);
  line-height:1;
  color:var(--cyan);
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}
.metric .num span{ font-size:.55em; margin-left:4px; }
.metric .label{ margin-top:10px; font-size:13px; color:var(--muted); }

/* ---------- 案例 zigzag ---------- */
.case-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
  padding:40px 0;
}
.case-row + .case-row{ border-top:1px solid var(--line); }
.case-row.reverse .case-media{ order:2; }
.case-media{ overflow:hidden; border-radius:var(--r-card); border:1px solid var(--stroke); background:var(--panel); }
.case-media img{
  width:100%;
  aspect-ratio:16 / 10;
  object-fit:cover;
  transition:transform .35s ease;
}
.case-row:hover .case-media img{ transform:scale(1.03); }
.case-index{
  font-family:var(--font-num);
  font-size:14px; letter-spacing:.16em; color:var(--orange);
}
.case-body h3{ font-size:21px; margin:10px 0 12px; }
.case-body p{ color:var(--muted); font-size:15.5px; margin:0 0 18px; }
.case-tags{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:12px; }
.result-list{ display:grid; gap:12px; }
.result-list li{
  position:relative; padding-left:26px; font-size:15px; color:var(--text);
}
.result-list li::before{
  content:"";
  position:absolute; left:2px; top:11px;
  width:12px; height:2px; background:var(--cyan);
  box-shadow:0 0 0 0 rgba(25,245,201,.4);
}
.result-list li::after{
  content:"";
  position:absolute; left:7px; top:6px;
  width:2px; height:12px; background:var(--cyan);
}

/* ---------- 评价 ---------- */
.quote-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.quote-card{
  background:var(--panel);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  padding:28px;
  transition:box-shadow .3s ease, border-color .3s ease, transform .3s ease;
}
.quote-card:hover{ border-color:var(--primary-line); transform:translateY(-2px); box-shadow:var(--shadow-hover); }
.quote-card p{ color:var(--muted); font-size:15px; margin:0 0 20px; }
.quote-meta{ display:flex; align-items:center; gap:12px; border-top:1px solid var(--line); padding-top:16px; }
.quote-avatar{
  width:40px; height:40px; border-radius:var(--r-sm); flex:0 0 40px;
  background:linear-gradient(135deg, rgba(110,75,255,.7), rgba(25,245,201,.5));
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-num); font-size:16px; color:#0B0D12;
}
.quote-meta strong{ display:block; font-size:14px; font-weight:600; }
.quote-meta span{ font-size:13px; color:var(--dim); }

/* ---------- FAQ ---------- */
.faq-layout{ display:grid; grid-template-columns:minmax(0,4fr) minmax(0,8fr); gap:48px; align-items:start; }
.faq-aside h2{ font-size:clamp(24px,2.6vw,34px); }
.faq-aside p{ color:var(--muted); font-size:15px; margin:16px 0 24px; }
.accordion-item{ background:transparent; border:0; border-top:1px solid var(--line); border-radius:0; }
.accordion-item:last-child{ border-bottom:1px solid var(--line); }
.accordion-header{ margin:0; }
.accordion-button{
  display:flex; align-items:center; gap:16px;
  width:100%; padding:18px 4px; background:transparent;
  color:var(--text); font-size:16px; font-weight:600; line-height:1.6;
  box-shadow:none; border:0; border-radius:0;
}
.accordion-button::after{ display:none !important; }
.accordion-button:not(.collapsed){ background:transparent; color:var(--cyan); box-shadow:none; }
.accordion-button:focus{ box-shadow:none; border:0; }
.faq-no{
  font-family:var(--font-num); font-size:13px; letter-spacing:.14em;
  color:var(--dim); flex:0 0 28px;
}
.faq-q{ flex:1 1 auto; text-align:left; }
.faq-sign{ position:relative; width:14px; height:14px; flex:0 0 14px; }
.faq-sign::before,
.faq-sign::after{ content:""; position:absolute; background:var(--muted); transition:all .3s ease; }
.faq-sign::before{ left:0; top:6px; width:14px; height:2px; }
.faq-sign::after{ left:6px; top:0; width:2px; height:14px; }
.accordion-button:not(.collapsed) .faq-sign::before,
.accordion-button:not(.collapsed) .faq-sign::after{ background:var(--cyan); }
.accordion-button:not(.collapsed) .faq-sign::after{ transform:rotate(90deg); opacity:0; }
.accordion-body{ padding:0 0 22px 44px; color:var(--muted); font-size:15px; max-width:680px; }

/* ---------- CTA / 表单 ---------- */
.cta-grid{ display:grid; grid-template-columns:minmax(0,5fr) minmax(0,7fr); gap:48px; align-items:start; }
.cta-copy h2{ font-size:clamp(24px,2.6vw,34px); }
.cta-copy p{ color:var(--muted); font-size:15.5px; margin:16px 0 24px; }
.cta-points{ display:grid; gap:14px; }
.cta-points li{ position:relative; padding-left:26px; font-size:15px; color:var(--text); }
.cta-points li::before{
  content:""; position:absolute; left:2px; top:10px; width:10px; height:10px;
  border:2px solid var(--cyan); border-radius:2px;
}
.panel{
  background:var(--panel);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--shadow-card);
}
.form-status{
  display:none;
  margin-bottom:20px; padding:12px 16px; border-radius:var(--r-sm);
  font-size:14px; border:1px solid transparent;
}
.form-status.is-visible{ display:block; }
.form-status.is-success{ color:var(--cyan); background:rgba(25,245,201,.08); border-color:rgba(25,245,201,.35); }
.form-status.is-error{ color:var(--danger); background:rgba(255,90,90,.08); border-color:rgba(255,90,90,.35); }
.field{ margin-bottom:20px; }
.field label{ display:block; font-size:14px; font-weight:500; margin-bottom:8px; color:var(--text); }
.req{ color:var(--cyan); margin-left:4px; }
.form-control, .form-select{
  width:100%; height:46px; padding:0 14px;
  background:#0B0D12; color:var(--text);
  border:1px solid var(--stroke); border-radius:var(--r-sm);
  font-size:15px; transition:border-color .28s ease, box-shadow .28s ease;
}
textarea.form-control{ height:auto; min-height:120px; padding:12px 14px; line-height:1.7; resize:vertical; }
.form-control::placeholder{ color:var(--dim); }
.form-control:focus, .form-select:focus{
  background:#0B0D12; color:var(--text);
  border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(110,75,255,.35);
  outline:none;
}
.form-select option{ background:#14171F; color:var(--text); }
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  padding:64px 0 0;
  background:#080A0E;
  border-top:1px solid var(--line);
}
.footer-grid{ display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:32px; }
.footer-logo{ display:inline-flex; align-items:center; gap:10px; text-decoration:none; margin-bottom:18px; }
.footer-col p{ color:var(--muted); font-size:14px; margin:0; max-width:360px; }
.footer-col h4{
  position:relative; font-size:15px; font-weight:700; padding-top:14px; margin-bottom:18px;
}
.footer-col h4::before{ content:""; position:absolute; top:0; left:0; width:22px; height:2px; background:var(--cyan); }
.footer-col ul li{ margin-bottom:10px; font-size:14px; color:var(--muted); }
.footer-col ul li a{ color:var(--muted); }
.footer-col ul li a:hover{ color:var(--cyan); }
.footer-bottom{
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:12px;
  margin-top:48px; padding:22px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px; color:var(--dim);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .case-row{ gap:36px; }
}

@media (max-width:991px){
  .section{ padding:72px 0; }
  .metrics{ grid-template-columns:1fr 1fr; }
  .metric{ border-left:none; }
  .metric + .metric{ border-left:none; }
  .metric:nth-child(n+3){ border-top:1px solid var(--line); }
  .metric:nth-child(even){ border-left:1px solid var(--line); }
  .case-row{ grid-template-columns:1fr; gap:24px; padding:34px 0; }
  .case-row.reverse .case-media{ order:0; }
  .quote-grid{ grid-template-columns:1fr 1fr; }
  .faq-layout{ grid-template-columns:1fr; gap:32px; }
  .cta-grid{ grid-template-columns:1fr; gap:32px; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:28px; }
}

@media (max-width:767px){
  body{ font-size:15.5px; }
  .container,.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{ padding-left:16px; padding-right:16px; }
  .section{ padding:56px 0; }
  .page-hero{ min-height:280px; padding:44px 0 40px; }
  .hero-btns .btn-lj{ width:100%; }
  .metric{ padding:22px 18px; }
  .quote-grid{ grid-template-columns:1fr; }
  .form-grid{ grid-template-columns:1fr; gap:0; }
  .panel{ padding:22px; }
  .accordion-body{ padding-left:0; }
  .faq-no{ flex:0 0 24px; }
  .footer-grid{ grid-template-columns:1fr; }
  .footer-bottom{ flex-direction:column; }
  .brand-actions .btn-lj{ padding:0 16px; font-size:14px; }
  .site-footer{ margin-top:56px; padding-top:48px; }
}

@media (max-width:520px){
  .hero-title{ font-size:26px; }
  .case-body h3{ font-size:19px; }
  .logo-text{ font-size:18px; }
}

/* roulang page: category4 */
:root{
  --bg:#0B0D12;
  --bg-deep:#0A0C10;
  --panel:#14171F;
  --panel-2:#1B1F2A;
  --line:rgba(255,255,255,.08);
  --stroke:rgba(255,255,255,.12);
  --brand:#6E4BFF;
  --brand-soft:rgba(110,75,255,.16);
  --cyan:#19F5C9;
  --cyan-soft:rgba(25,245,201,.3);
  --orange:#FF7A1A;
  --text:#F2F4F8;
  --text-2:#A8B0C0;
  --text-3:#6C7689;
  --danger:#FF5A5A;
  --radius:14px;
  --radius-sm:10px;
  --radius-badge:6px;
  --container:1200px;
  --shadow-card:0 0 0 1px var(--stroke), 0 10px 28px rgba(0,0,0,.45);
  --t:.3s ease;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Bebas Neue","Oswald","DIN Alternate","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text-2);text-decoration:none;transition:color .25s ease,border-color .25s ease}
a:hover{color:var(--cyan)}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
h1,h2,h3,h4{letter-spacing:-.01em;line-height:1.35;margin:0}
p{margin:0}
::selection{background:rgba(110,75,255,.4);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(11,13,18,.96);border-bottom:1px solid var(--line)}
.brand-row{border-bottom:1px solid var(--line)}
.brand-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{
  width:26px;height:26px;flex:0 0 26px;position:relative;
  background:linear-gradient(135deg,var(--brand) 0%,#8A6BFF 45%,var(--cyan) 100%);
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
}
.logo-mark::after{
  content:"";position:absolute;left:6px;top:6px;width:12px;height:12px;
  border-left:2px solid rgba(11,13,18,.85);border-bottom:2px solid rgba(11,13,18,.85);
  transform:rotate(-45deg);
}
.logo-text{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--text)}
.logo-text em{font-style:normal;color:var(--cyan)}
.brand-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-sm);display:inline-flex;
  align-items:center;justify-content:center;background:transparent;color:var(--text-2);
  border:1px solid var(--stroke);cursor:pointer;transition:all var(--t);font-size:15px;
}
.icon-btn:hover{color:var(--cyan);border-color:var(--cyan-soft)}
.icon-btn:focus-visible{outline:2px solid rgba(110,75,255,.55);outline-offset:2px}
.channel-row{background:rgba(11,13,18,.9)}
.channel-inner{display:flex;align-items:center;min-height:48px}
.channel-nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.channel-link{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--radius-badge);
  font-size:14px;font-weight:500;color:var(--text-2);position:relative;white-space:nowrap;
  transition:color .25s ease,background .25s ease;
}
.channel-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.channel-link.active{color:var(--text);background:var(--brand-soft)}
.channel-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-7px;height:2px;background:var(--cyan);
}
@media (max-width:991px){
  .brand-inner{height:58px}
  .channel-inner{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
  .channel-inner::-webkit-scrollbar{display:none}
  .channel-nav{flex-wrap:nowrap;padding:8px 0}
  .channel-link.active::after{bottom:1px}
}

/* ---------- 按钮 ---------- */
.btn-lj{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;transition:all .28s ease;text-align:center;
}
.btn-lj-primary{background:var(--brand);color:#fff}
.btn-lj-primary:hover{background:#7D5CFF;color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(110,75,255,.32)}
.btn-lj-primary:active{transform:none;box-shadow:none}
.btn-lj-ghost{background:transparent;color:var(--text);border-color:var(--stroke)}
.btn-lj-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(25,245,201,.05)}
.btn-lj:focus-visible{outline:2px solid rgba(110,75,255,.55);outline-offset:2px}
.btn-lj-lg{height:48px;padding:0 26px}
.btn-lj-block{width:100%}

/* ---------- 分类 Hero ---------- */
.page-hero{
  position:relative;display:flex;align-items:center;min-height:320px;
  background:#0B0D12 url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  border-bottom:1px solid var(--line);overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,13,18,.97) 0%,rgba(11,13,18,.88) 42%,rgba(11,13,18,.42) 100%);
}
.page-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:56px}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sep{color:rgba(255,255,255,.22)}
.crumbs .current{color:var(--text-2)}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);font-weight:700;max-width:760px;margin:0 0 14px;
}
.hero-anchor{width:48px;height:3px;background:var(--cyan);margin-bottom:20px}
.page-hero .hero-sub{font-size:16.5px;color:var(--text-2);max-width:640px;margin:0 0 28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:800px;margin-bottom:32px}
.sec-eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.16em;color:var(--cyan);
  border:1px solid rgba(25,245,201,.32);border-radius:var(--radius-badge);
  padding:3px 10px;margin-bottom:16px;
}
.sec-title{font-size:clamp(24px,2.6vw,34px);font-weight:700;margin-bottom:12px}
.sec-desc{color:var(--text-2);font-size:15.5px;max-width:760px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- 杂志式卡片网格 ---------- */
.mag-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px;align-items:start}
.mag-card{
  grid-column:span 4;background:var(--panel);border:1px solid var(--stroke);
  border-radius:var(--radius);overflow:hidden;transition:border-color .28s ease,transform .28s ease,box-shadow .28s ease;
}
.mag-card:hover{border-color:rgba(110,75,255,.55);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.mag-card:hover .mag-title{color:var(--cyan)}
.m-span-7{grid-column:span 7}
.m-span-5{grid-column:span 5}
.m-span-4{grid-column:span 4}
.mag-media{overflow:hidden;background:linear-gradient(135deg,#171B26,#0F121A)}
.mag-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.mag-card:hover .mag-media img{transform:scale(1.03)}
.mh-lg{height:250px}
.mh-md{height:190px}
.mh-sm{height:152px}
.mag-body{padding:24px}
.mag-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.mag-badge{
  display:inline-flex;align-items:center;font-size:12.5px;letter-spacing:.06em;
  color:var(--cyan);border:1px solid rgba(25,245,201,.3);border-radius:var(--radius-badge);padding:2px 10px;
}
.mag-badge.is-hot{color:var(--orange);border-color:rgba(255,122,26,.36)}
.mag-num{font-family:var(--font-num);font-size:14px;letter-spacing:.18em;color:var(--text-3);font-variant-numeric:tabular-nums}
.mag-title{font-size:20px;font-weight:700;margin-bottom:10px;transition:color .28s ease}
.mag-text{font-size:14.5px;color:var(--text-2);line-height:1.8}
.mag-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:18px;padding-top:14px;
  border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}
.mag-meta i{color:var(--cyan);font-size:11px}
.mag-card.is-plain{background:var(--panel-2);border-left:3px solid var(--brand)}
.mag-card.is-plain:hover{border-left-color:var(--orange)}
.mag-card.is-plain .mag-body{padding:26px 24px}
.check-list{margin-top:16px}
.check-list li{
  position:relative;padding-left:20px;font-size:14px;color:var(--text-2);
  margin-bottom:10px;list-style:none;line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;background:var(--cyan);
  transform:rotate(45deg);
}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-card{
  background:var(--panel);border:1px solid var(--stroke);border-radius:var(--radius);padding:26px;
  transition:border-color .28s ease,transform .28s ease;
}
.scene-card:hover{border-color:rgba(110,75,255,.55);transform:translateY(-2px)}
.scene-card .idx{font-family:var(--font-num);font-size:15px;letter-spacing:.16em;color:var(--cyan)}
.scene-card h3{font-size:18px;font-weight:700;margin:14px 0 10px}
.scene-card p{font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ---------- 对接流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--stroke)}
.step{padding:30px 24px;border-right:1px solid var(--line)}
.step:last-child{border-right:none}
.step-no{font-family:var(--font-num);font-size:34px;line-height:1;color:var(--cyan);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.step h3{font-size:18px;font-weight:700;margin:16px 0 10px}
.step p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.step-line{width:26px;height:2px;background:rgba(255,255,255,.14);margin-top:22px}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-list{counter-reset:faq;border-top:1px solid var(--line)}
.faq-list .accordion-item{background:transparent;border:none;border-bottom:1px solid var(--line);border-radius:0}
.faq-list .accordion-button{
  display:flex;align-items:center;width:100%;min-height:56px;padding:18px 0;
  background:transparent;border:none;box-shadow:none!important;color:var(--text);
  font-size:16.5px;font-weight:600;text-align:left;transition:color .25s ease;
}
.faq-list .accordion-button::before{
  counter-increment:faq;content:"0" counter(faq);
  font-family:var(--font-num);font-size:13px;color:var(--text-3);
  margin-right:18px;letter-spacing:.1em;
}
.faq-list .accordion-button::after{
  content:"+";background-image:none!important;width:auto;height:auto;margin-left:auto;
  font-size:20px;line-height:1;color:var(--text-3);transform:none;transition:color .25s ease;
}
.faq-list .accordion-button:not(.collapsed){color:var(--cyan)}
.faq-list .accordion-button:not(.collapsed)::after{content:"−";color:var(--cyan)}
.faq-list .accordion-button:hover{color:var(--cyan)}
.faq-list .accordion-body{padding:0 0 20px 32px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:680px}
.faq-aside p{font-size:15px;color:var(--text-2);margin-bottom:20px}

/* ---------- CTA 与表单 ---------- */
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start}
.cta-info h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;margin-bottom:16px}
.cta-info p{font-size:15.5px;color:var(--text-2);margin-bottom:22px}
.info-list li{
  list-style:none;font-size:14.5px;color:var(--text-2);margin-bottom:12px;
  display:flex;align-items:center;gap:10px;
}
.info-list i{color:var(--cyan);font-size:12px}
.form-panel{background:var(--panel);border:1px solid var(--stroke);border-radius:var(--radius);padding:28px}
.form-status{
  display:none;border-radius:var(--radius-sm);padding:12px 16px;font-size:14px;margin-bottom:22px;
}
.form-status.is-ok{display:block;color:var(--cyan);border:1px solid rgba(25,245,201,.35);background:rgba(25,245,201,.07)}
.form-status.is-err{display:block;color:var(--danger);border:1px solid rgba(255,90,90,.35);background:rgba(255,90,90,.07)}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:500;margin-bottom:8px;color:var(--text)}
.field .req{color:var(--cyan);margin-left:4px}
.form-control-lj{
  width:100%;height:46px;padding:0 14px;background:#0B0D12;color:var(--text);
  border:1px solid var(--stroke);border-radius:var(--radius-sm);font-size:15px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
textarea.form-control-lj{height:120px;padding:12px 14px;line-height:1.75;resize:vertical}
.form-control-lj::placeholder{color:var(--text-3)}
.form-control-lj:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(110,75,255,.25)}
.form-note{font-size:13px;color:var(--text-3);margin-top:14px;line-height:1.7}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.85}
.footer-col h4{
  position:relative;font-size:15px;font-weight:700;margin-bottom:20px;padding-top:14px;color:var(--text);
}
.footer-col h4::before{content:"";position:absolute;top:0;left:0;width:26px;height:2px;background:var(--cyan)}
.footer-col ul{list-style:none}
.footer-col li{font-size:14px;color:var(--text-2);margin-bottom:10px;line-height:1.75}
.footer-col li a{color:var(--text-2)}
.footer-col li a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:48px;padding:20px 0;font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:991px){
  .section{padding:72px 0}
  .page-hero{min-height:0}
  .page-hero .container{padding-top:44px;padding-bottom:44px}
  .mag-grid{gap:16px}
  .mag-grid > .mag-card{grid-column:span 6}
  .mag-grid > .mag-card.m-span-4{grid-column:span 6}
  .mh-lg{height:200px}
  .mh-md{height:180px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step{border-bottom:1px solid var(--line)}
  .step:nth-child(2n){border-right:none}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .container{padding:0 16px}
  body{font-size:15.5px}
  .mag-grid{grid-template-columns:1fr}
  .mag-grid > .mag-card,
  .mag-grid > .mag-card.m-span-4{grid-column:span 1}
  .mh-lg,.mh-md,.mh-sm{height:186px}
  .scene-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step{border-right:none;padding:24px 0}
  .form-row{grid-template-columns:1fr}
  .form-panel{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-actions .btn-lj{width:100%}
}

/* roulang page: category5 */
:root{
  --bg:#0B0D12;
  --bg-soft:#0E1116;
  --panel:#14171F;
  --panel-2:#1B1F2A;
  --line:rgba(255,255,255,.08);
  --stroke:rgba(255,255,255,.12);
  --text:#F2F4F8;
  --text-2:#A8B0C0;
  --text-3:#6C7689;
  --primary:#6E4BFF;
  --primary-soft:rgba(110,75,255,.16);
  --primary-line:rgba(110,75,255,.55);
  --cyan:#19F5C9;
  --cyan-soft:rgba(25,245,201,.14);
  --orange:#FF7A1A;
  --danger:#FF5A5A;
  --radius-card:14px;
  --radius-sm:10px;
  --radius-badge:6px;
  --shadow-card:0 0 0 1px var(--stroke),0 10px 28px rgba(0,0,0,.45);
  --shadow-card-hover:0 0 0 1px var(--primary-line),0 14px 32px rgba(0,0,0,.5);
  --dur:.3s ease;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Bebas Neue","Oswald","DIN Alternate","Barlow Condensed",var(--font-sans);
  --gutter:24px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  background-image:radial-gradient(1200px 600px at 82% -10%,rgba(110,75,255,.14),transparent 62%),
                   radial-gradient(900px 480px at 4% 8%,rgba(25,245,201,.07),transparent 60%);
  background-repeat:no-repeat;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--dur),border-color var(--dur),opacity var(--dur);}
a:hover{color:var(--cyan);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.32;}
p{margin:0 0 1.1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid rgba(110,75,255,.5);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter);}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ============ 导航 ============ */
.site-header{position:relative;z-index:80;background:rgba(11,13,18,.86);}
.brand-row{
  height:64px;display:flex;align-items:center;
  border-bottom:1px solid var(--line);
  max-height:64px;overflow:hidden;
  transition:max-height .3s ease,opacity .3s ease;
}
.site-header.is-scrolled .brand-row{max-height:0;opacity:0;border-bottom-color:transparent;}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:26px;height:26px;flex:0 0 26px;display:inline-block;position:relative;
  background:linear-gradient(135deg,var(--primary) 0%,#3C2BA8 100%);
  clip-path:polygon(0 0,72% 0,100% 28%,100% 100%,0 100%);
}
.logo-mark::after{
  content:"";position:absolute;left:5px;right:5px;top:11px;height:2px;background:var(--cyan);
}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.02em;color:var(--text);}
.logo-text em{font-style:normal;color:var(--cyan);}
.brand-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-sm);
  background:transparent;border:1px solid var(--stroke);color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color var(--dur),color var(--dur),transform var(--dur);
}
.icon-btn:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-1px);}
.channel-row{
  position:sticky;top:0;z-index:70;height:48px;display:flex;align-items:center;
  background:rgba(11,13,18,.94);border-bottom:1px solid var(--line);
}
.channel-inner{display:flex;align-items:center;width:100%;}
.channel-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:4px 0;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{
  display:inline-block;white-space:nowrap;padding:0 16px;line-height:36px;
  font-size:15px;font-weight:500;color:var(--text-2);border-radius:var(--radius-badge);
  border-bottom:2px solid transparent;transition:color var(--dur),background var(--dur),border-color var(--dur);
}
.channel-link:hover{color:var(--cyan);background:rgba(25,245,201,.06);}
.channel-link.active{color:var(--text);background:var(--primary-soft);border-bottom-color:var(--cyan);}

/* ============ 按钮 ============ */
.btn-lj{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;
  cursor:pointer;transition:transform var(--dur),box-shadow var(--dur),background var(--dur),color var(--dur),border-color var(--dur);
}
.btn-lj-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(110,75,255,.28);}
.btn-lj-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#fff;box-shadow:0 8px 20px rgba(110,75,255,.36);}
.btn-lj-primary:active{transform:translateY(0);box-shadow:0 3px 10px rgba(110,75,255,.3);}
.btn-lj-ghost{background:transparent;color:var(--text);border-color:var(--stroke);}
.btn-lj-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-1px);}
.btn-lj-lg{height:48px;padding:0 26px;}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--cyan);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.link-more:hover{border-bottom-color:var(--cyan);}
.link-more i{font-size:12px;transition:transform var(--dur);}
.link-more:hover i{transform:translateX(3px);}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:.14em;color:var(--cyan);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);display:inline-block;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);}
.section-head p{color:var(--text-2);font-size:15.5px;margin-top:10px;max-width:760px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ============ 分类 Hero ============ */
.page-hero{
  position:relative;min-height:320px;display:flex;align-items:center;
  background-color:#101320;
  background-image:
    linear-gradient(90deg,rgba(11,13,18,.97) 0%,rgba(11,13,18,.88) 44%,rgba(11,13,18,.5) 100%),
    repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 72px),
    url('/assets/images/backpic/back-3.webp');
  background-size:cover,auto,cover;
  background-position:center,center,center;
  border-bottom:1px solid var(--line);
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:18px;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--cyan);}
.crumbs span.dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);display:inline-block;}
.page-hero h1{font-size:clamp(30px,4.4vw,52px);max-width:760px;}
.page-hero .hero-sub{color:var(--text-2);font-size:17px;margin:16px 0 26px;max-width:620px;}
.hero-anchors{display:flex;flex-wrap:wrap;gap:14px;}
.title-bar{width:48px;height:3px;background:var(--cyan);margin-bottom:20px;border-radius:2px;}

/* ============ 主问答区 ============ */
.qa-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.toc{
  position:sticky;top:110px;background:var(--panel);border:1px solid var(--stroke);
  border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);
}
.toc h3{font-size:15px;color:var(--text);margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.toc ul li+li{margin-top:4px;}
.toc a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--radius-badge);
  font-size:14px;color:var(--text-2);border-left:2px solid transparent;
}
.toc a i{font-size:10px;color:var(--text-3);transition:color var(--dur);}
.toc a:hover{background:var(--panel-2);color:var(--cyan);border-left-color:var(--cyan);}
.toc a:hover i{color:var(--cyan);}
.toc-foot{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.7;}

.article-body{max-width:820px;}
.article-body h2{
  font-size:clamp(22px,2.2vw,28px);margin:48px 0 18px;padding-left:16px;position:relative;scroll-margin-top:140px;
}
.article-body h2:first-child{margin-top:0;}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--cyan);border-radius:2px;}
.article-body h3{font-size:19px;margin:28px 0 12px;color:var(--text);}
.article-body p{color:var(--text-2);}
.article-body strong{color:var(--text);font-weight:600;}
.lj-list{margin:6px 0 22px;}
.lj-list li{
  position:relative;padding:14px 0 14px 30px;color:var(--text-2);font-size:15.5px;
  border-bottom:1px dashed var(--line);
}
.lj-list li::before{
  content:"";position:absolute;left:0;top:22px;width:8px;height:8px;background:var(--cyan);
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%);
}
.lj-list li:last-child{border-bottom:0;}
.lj-list li b{color:var(--text);font-weight:600;margin-right:6px;}
.quote-block{
  border-left:3px solid var(--primary);background:var(--panel);
  padding:20px 22px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);font-size:15px;margin:24px 0;
}
.quote-block strong{color:var(--cyan);}
.figure-block{margin:28px 0;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--stroke);}
.figure-block img{width:100%;height:280px;object-fit:cover;transition:transform .35s ease;}
.figure-block:hover img{transform:scale(1.03);}
.figure-block figcaption{font-size:13px;color:var(--text-3);padding:12px 16px;background:var(--panel);}

/* ============ FAQ ============ */
.lj-accordion{border-top:1px solid var(--line);}
.lj-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.lj-accordion .accordion-button{
  background:transparent;color:var(--text);padding:0 0 0 0;min-height:56px;
  display:flex;align-items:center;gap:16px;box-shadow:none;font-size:16.5px;font-weight:600;
}
.lj-accordion .accordion-button:not(.collapsed){color:var(--cyan);}
.lj-accordion .accordion-button:focus{box-shadow:none;outline:2px solid rgba(110,75,255,.4);outline-offset:2px;border-radius:var(--radius-badge);}
.lj-accordion .accordion-button::after{display:none;}
.faq-num{font-size:13px;color:var(--text-3);font-weight:500;font-family:var(--font-num);letter-spacing:.06em;}
.lj-accordion .accordion-button:not(.collapsed) .faq-num{color:var(--cyan);}
.faq-q{flex:1 1 auto;text-align:left;}
.faq-sign{width:16px;height:16px;flex:0 0 16px;position:relative;}
.faq-sign::before{content:"";position:absolute;left:0;top:7px;width:16px;height:2px;background:var(--text-2);transition:background var(--dur);}
.faq-sign::after{content:"";position:absolute;left:7px;top:0;width:2px;height:16px;background:var(--text-2);transition:transform var(--dur),background var(--dur);}
.lj-accordion .accordion-button:not(.collapsed) .faq-sign::before{background:var(--cyan);}
.lj-accordion .accordion-button:not(.collapsed) .faq-sign::after{transform:scaleY(0);}
.lj-accordion .accordion-body{
  padding:0 0 20px 32px;color:var(--text-2);font-size:15px;max-width:680px;
}

/* ============ 联系信息 ============ */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px;}
.info-card{
  background:var(--panel);border:1px solid var(--stroke);border-radius:var(--radius-card);
  padding:26px 24px;transition:border-color var(--dur),transform var(--dur),box-shadow var(--dur);
}
.info-card:hover{border-color:var(--primary-line);transform:translateY(-2px);box-shadow:var(--shadow-card-hover);}
.info-card i{font-size:20px;color:var(--cyan);margin-bottom:14px;display:block;}
.info-card h3{font-size:17px;margin-bottom:10px;}
.info-card p{font-size:14.5px;color:var(--text-2);margin-bottom:0;}
.info-card .kv{font-family:var(--font-num);font-size:26px;color:var(--cyan);letter-spacing:.02em;font-variant-numeric:tabular-nums;}

/* ============ 支持渠道 ============ */
.channels-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.channel-card{
  position:relative;background:var(--panel-2);border:1px solid var(--stroke);
  border-radius:var(--radius-card);padding:28px 24px 26px;overflow:hidden;
  transition:border-color var(--dur),transform var(--dur),box-shadow var(--dur);
}
.channel-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);transition:background var(--dur);}
.channel-card:nth-child(2n)::before{background:var(--cyan);}
.channel-card:hover{border-color:var(--primary-line);transform:translateY(-2px);box-shadow:var(--shadow-card-hover);}
.channel-card:hover::before{background:var(--orange);}
.channel-card .num{font-family:var(--font-num);font-size:15px;color:var(--text-3);letter-spacing:.1em;}
.channel-card h3{font-size:19px;margin:10px 0 10px;}
.channel-card p{font-size:14.5px;color:var(--text-2);margin-bottom:18px;}

/* ============ 表单 CTA ============ */
.cta-section{
  background:linear-gradient(180deg,var(--bg-soft) 0%,var(--bg) 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.cta-left h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:16px;}
.cta-left p{color:var(--text-2);}
.cta-points li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;font-size:15px;color:var(--text-2);}
.cta-points li i{color:var(--cyan);margin-top:6px;font-size:13px;}
.form-panel{
  background:var(--panel);border:1px solid var(--stroke);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);
}
.form-status{
  border-radius:var(--radius-sm);padding:12px 16px;font-size:14px;margin-bottom:20px;
  border:1px solid var(--stroke);color:var(--text-2);
}
.form-status.is-success{border-color:rgba(25,245,201,.45);color:var(--cyan);background:rgba(25,245,201,.07);}
.form-status.is-error{border-color:rgba(255,90,90,.45);color:var(--danger);background:rgba(255,90,90,.07);}
.form-row{margin-bottom:20px;}
.form-row label{display:block;font-size:14px;font-weight:500;color:var(--text);margin-bottom:8px;}
.form-row label .req{color:var(--cyan);margin-left:4px;}
.form-control-lj{
  width:100%;height:46px;background:var(--bg);border:1px solid var(--stroke);border-radius:var(--radius-sm);
  color:var(--text);font-size:15px;padding:0 14px;transition:border-color var(--dur),box-shadow var(--dur);
}
textarea.form-control-lj{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control-lj::placeholder{color:var(--text-3);}
.form-control-lj:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(110,75,255,.35);}
.form-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.form-note{font-size:13px;color:var(--text-3);margin-top:14px;margin-bottom:0;}

/* ============ 页脚 ============ */
.site-footer{background:var(--panel);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-col p{font-size:14.5px;color:var(--text-2);max-width:340px;margin-bottom:0;}
.footer-col h4{
  font-size:15px;font-weight:700;margin-bottom:18px;padding-top:12px;position:relative;
}
.footer-col h4::before{content:"";position:absolute;top:0;left:0;width:24px;height:2px;background:var(--cyan);}
.footer-col ul li{margin-bottom:10px;font-size:14.5px;color:var(--text-2);}
.footer-col ul li a{color:var(--text-2);}
.footer-col ul li a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .qa-layout{grid-template-columns:4fr 8fr;gap:36px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .qa-layout{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;padding:18px;}
  .toc ul{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;}
  .toc ul::-webkit-scrollbar{display:none;}
  .toc ul li+li{margin-top:0;}
  .toc a{white-space:nowrap;background:var(--panel-2);border-left:0;border-bottom:2px solid transparent;}
  .toc a:hover{border-left-color:transparent;border-bottom-color:var(--cyan);}
  .toc-foot{display:none;}
  .toc h3{border-bottom:0;padding-bottom:0;margin-bottom:12px;}
  .contact-grid{grid-template-columns:1fr 1fr;}
  .channels-grid{grid-template-columns:1fr 1fr;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .page-hero{min-height:290px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:24px;}
  .page-hero{min-height:260px;padding:36px 0;
    background-image:linear-gradient(180deg,rgba(11,13,18,.94) 0%,rgba(11,13,18,.82) 60%,rgba(11,13,18,.6) 100%),
      repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 72px),
      url('/assets/images/backpic/back-3.webp');}
  .page-hero .hero-sub{font-size:15.5px;margin:14px 0 20px;}
  .hero-anchors .btn-lj{width:100%;}
  .contact-grid{grid-template-columns:1fr;}
  .channels-grid{grid-template-columns:1fr;}
  .form-grid-2{grid-template-columns:1fr;}
  .form-panel{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .brand-actions .btn-lj{height:40px;padding:0 16px;font-size:14px;}
  .article-body h2{scroll-margin-top:90px;}
  .figure-block img{height:200px;}
}
@media (max-width:575px){
  .logo-text{font-size:17px;}
  .channel-link{padding:0 12px;font-size:14px;}
  .lj-accordion .accordion-body{padding-left:0;}
  .lj-accordion .accordion-button{font-size:15.5px;gap:10px;}
}