/* roulang page: index */
:root{
  --bg:#07141A;
  --bg-2:#0B1D25;
  --panel:rgba(255,255,255,.055);
  --panel-border:rgba(120,255,230,.14);
  --primary:#14E0C0;
  --primary-hover:#4BF0D6;
  --primary-active:#0BB79C;
  --accent:#7C5CFF;
  --metric:#FFC24B;
  --text:#E6F4F2;
  --text-2:#9FB6B4;
  --text-3:#5E7472;
  --success:#34D399;
  --warn:#FF8A5B;
  --line:rgba(255,255,255,.08);
  --radius-card:18px;
  --radius-btn:12px;
  --shadow-1:0 2px 12px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --font-num:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{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;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
input,select,textarea{
  background:rgba(255,255,255,.04);
  border:1px solid var(--panel-border);
  border-radius:10px;
  height:44px;
  padding:0 14px;
  width:100%;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.7}
input::placeholder,textarea::placeholder{color:var(--text-3)}
input:focus,select:focus,textarea:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(20,224,192,.18);
  background:rgba(20,224,192,.05);
}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 18px}
@media(min-width:640px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* 布局 */
.layout{min-height:100vh;padding-top:60px}
@media(min-width:1024px){
  .layout{padding-left:240px;padding-top:0}
}
@media(min-width:1440px){
  .layout{padding-left:264px}
}

/* 侧栏 */
.side-nav{
  display:none;
  position:fixed;
  top:0;left:0;
  width:240px;height:100vh;
  background:var(--bg-2);
  border-right:1px solid var(--line);
  flex-direction:column;
  padding:24px 18px 20px;
  z-index:60;
  overflow-y:auto;
}
@media(min-width:1024px){.side-nav{display:flex}}
@media(min-width:1440px){.side-nav{width:264px;padding:26px 22px 22px}}
.side-nav::-webkit-scrollbar{width:6px}
.side-nav::-webkit-scrollbar-thumb{background:rgba(120,255,230,.18);border-radius:6px}
.brand{display:flex;align-items:center;gap:11px;margin-bottom:30px}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 8px 28px rgba(20,224,192,.28);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:700;color:#04211C;font-size:14px;
}
.brand-text{font-size:15px;font-weight:700;line-height:1.35;letter-spacing:.01em}
.brand-text span{display:block;font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.12em;margin-top:2px}
.side-label{font-size:11px;letter-spacing:.16em;color:var(--text-3);margin:0 0 10px 10px}
.side-links{display:flex;flex-direction:column;gap:4px;margin-bottom:22px}
.nav-link{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:11px;
  font-size:14px;color:var(--text-2);
  border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-link svg{flex:0 0 18px;opacity:.8}
.nav-link:hover{background:rgba(255,255,255,.04);color:var(--text)}
.nav-link.active{
  background:var(--panel);
  border-left:3px solid var(--primary);
  color:var(--text);
  box-shadow:inset 0 0 0 1px rgba(120,255,230,.08);
}
.nav-link.active svg{opacity:1;color:var(--primary)}
.status-card{
  background:var(--panel);
  border:1px solid var(--panel-border);
  border-radius:14px;
  padding:14px;
  margin-bottom:auto;
}
.status-row{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-3)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 10px rgba(52,211,153,.8)}
.status-num{font-family:var(--font-num);font-size:22px;color:var(--primary);letter-spacing:-.02em;margin-top:6px}
.side-foot{padding-top:18px;display:flex;flex-direction:column;gap:10px}

/* 顶部条（移动） */
.topbar{
  position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  background:rgba(7,20,26,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
}
@media(min-width:1024px){.topbar{display:none}}
.topbar .brand{margin-bottom:0}
.topbar .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;font-size:12px}
.topbar .brand-text{font-size:14px}
.burger{
  width:42px;height:42px;border-radius:11px;
  background:var(--panel);border:1px solid var(--panel-border);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
}
.burger span{display:block;width:17px;height:1.5px;background:var(--text);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:17px;height:1.5px;background:var(--text)}
.burger span::before{top:-5.5px}
.burger span::after{top:5.5px}

.drawer{
  position:fixed;inset:0;z-index:65;
  background:rgba(7,20,26,.97);
  backdrop-filter:blur(16px);
  padding:80px 20px 28px;
  display:flex;flex-direction:column;
  transform:translateY(-100%);
  opacity:0;pointer-events:none;
  transition:transform .28s ease,opacity .28s ease;
}
.drawer.open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer .nav-link{height:48px;font-size:15px;justify-content:space-between}
.drawer .nav-link svg{flex:0 0 16px}
@media(min-width:1024px){.drawer{display:none}}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#17C9E0);
  color:#04211C;
  box-shadow:0 0 0 1px rgba(20,224,192,.5),0 8px 28px rgba(20,224,192,.28);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(20,224,192,.6),0 14px 34px rgba(20,224,192,.4)}
.btn-primary:active{transform:translateY(1px);background:var(--primary-active)}
.btn-ghost{
  background:var(--panel);
  border:1px solid var(--panel-border);
  color:var(--text);
}
.btn-ghost:hover{border-color:rgba(20,224,192,.45);transform:translateY(-1px)}
.btn-block{width:100%}
.btn-sm{height:38px;font-size:13.5px;padding:0 15px}
.link-arrow{color:var(--primary);font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease,color .2s ease;text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(20,224,192,.4)}
.link-arrow:hover{gap:11px;text-decoration-color:var(--primary)}
.link-plain{color:var(--text-3);font-size:13px;transition:color .2s ease}
.link-plain:hover{color:var(--primary)}

/* 通用 */
.section{padding:clamp(64px,8vw,112px) 0}
.section-tight{padding:clamp(48px,6vw,80px) 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.25;letter-spacing:.01em}
.sec-sub{color:var(--text-2);font-size:15px;max-width:640px;margin-top:10px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--primary);
  background:rgba(20,224,192,.1);
  border:1px solid rgba(20,224,192,.32);
  border-radius:999px;padding:5px 13px;margin-bottom:18px;
}
.glass{
  background:var(--panel);
  border:1px solid var(--panel-border);
  border-radius:var(--radius-card);
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.glass:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(20,224,192,.4)}
.tag{
  display:inline-block;font-size:12px;padding:4px 11px;border-radius:999px;
  background:rgba(20,224,192,.12);
  border:1px solid rgba(20,224,192,.4);
  color:var(--primary);
  letter-spacing:.04em;
}
.hairline{height:1px;background:linear-gradient(90deg,transparent,rgba(120,255,230,.28),transparent)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:clamp(40px,5vw,72px) 0 clamp(52px,6vw,88px)}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;pointer-events:none}
.hero::before{
  width:620px;height:620px;top:-220px;right:-140px;
  background:radial-gradient(circle,rgba(20,224,192,.17),transparent 68%);
}
.hero::after{
  width:520px;height:520px;bottom:-260px;left:-160px;
  background:radial-gradient(circle,rgba(124,92,255,.15),transparent 68%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px}}
.hero h1{font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1.18;letter-spacing:.01em;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{font-size:16px;color:var(--text-2);max-width:600px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:22px;font-size:13px;color:var(--text-3)}
.hero-facts b{display:block;font-family:var(--font-num);font-size:18px;color:var(--text);letter-spacing:-.02em;margin-bottom:2px}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;border-radius:18px;
  border:1px solid rgba(20,224,192,.35);
  filter:saturate(1.05);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:18px;
  background:linear-gradient(180deg,rgba(7,20,26,0) 45%,rgba(7,20,26,.72));
  pointer-events:none;
}
.float-card{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:rgba(11,29,37,.86);
  border:1px solid var(--panel-border);
  border-radius:14px;padding:12px 16px;
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow-1);
}
.float-card b{font-family:var(--font-num);font-size:24px;color:var(--metric);letter-spacing:-.02em;display:block}
.float-card span{font-size:12px;color:var(--text-3)}

/* 指标带 */
.metrics-wrap{border-top:1px solid transparent;border-bottom:1px solid transparent;position:relative;padding:clamp(38px,4.4vw,58px) 0}
.metrics-wrap::before,.metrics-wrap::after{content:"";position:absolute;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(120,255,230,.3),transparent)}
.metrics-wrap::before{top:0}
.metrics-wrap::after{bottom:0}
.metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(min-width:1024px){.metrics{grid-template-columns:repeat(4,1fr);gap:18px}}
.metric-card{
  position:relative;background:var(--panel);border:1px solid var(--panel-border);
  border-radius:var(--radius-card);padding:22px 20px;overflow:hidden;
  backdrop-filter:blur(12px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.metric-card:hover{transform:translateY(-4px);border-color:rgba(20,224,192,.42);box-shadow:var(--shadow-2)}
.metric-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(135deg,var(--primary),var(--accent))}
.metric-num{font-family:var(--font-num);font-size:clamp(24px,3vw,38px);letter-spacing:-.02em;color:var(--metric);line-height:1.15}
.metric-label{font-size:12px;color:var(--text-3);letter-spacing:.06em;margin-top:4px}
.metric-desc{font-size:13px;color:var(--text-2);margin-top:10px}
.spark{display:flex;align-items:flex-end;gap:4px;height:26px;margin-top:14px}
.spark i{display:block;width:6px;border-radius:2px;background:linear-gradient(180deg,rgba(20,224,192,.85),rgba(20,224,192,.18))}

/* 服务矩阵 */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.card-lg{grid-column:span 12;display:flex;flex-direction:column;gap:18px;padding:26px;overflow:hidden}
@media(min-width:900px){.card-lg{grid-column:span 6;flex-direction:row;align-items:center}}
.card-lg img{width:100%;border-radius:14px;border:1px solid var(--line);object-fit:cover}
@media(min-width:900px){.card-lg img{width:46%;height:190px}}
.card-md{grid-column:span 12;padding:24px;display:flex;flex-direction:column;gap:10px;position:relative}
@media(min-width:900px){.card-md{grid-column:span 4}}
.card-wide{grid-column:span 12;padding:26px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;background:linear-gradient(135deg,rgba(20,224,192,.1),rgba(124,92,255,.1));border:1px solid var(--panel-border);border-radius:var(--radius-card)}
.card-no{font-family:var(--font-num);font-size:13px;color:rgba(20,224,192,.5);letter-spacing:.1em}
.card-md h3,.card-lg h3{font-size:20px;font-weight:600;line-height:1.4}
.card-md p,.card-lg p{font-size:14px;color:var(--text-2);line-height:1.75}
.card-more{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--primary);transition:gap .2s ease}
.card-md:hover .card-more,.card-lg:hover .card-more{gap:11px}

/* 对比 */
.compare{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:900px){.compare{grid-template-columns:1fr 1fr;gap:24px}}
.compare-col{padding:26px;border-radius:var(--radius-card);border:1px solid var(--line);background:rgba(255,255,255,.03)}
.compare-col.after{
  background:linear-gradient(135deg,rgba(20,224,192,.12),rgba(124,92,255,.1));
  border-color:rgba(20,224,192,.45);
  box-shadow:0 0 0 1px rgba(20,224,192,.18),0 16px 40px rgba(20,224,192,.14);
}
.compare-col h3{font-size:17px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.pill{width:9px;height:9px;border-radius:50%;background:var(--text-3)}
.pill.on{background:var(--primary);box-shadow:0 0 12px rgba(20,224,192,.8)}
.compare-col li{display:flex;gap:10px;font-size:14px;color:var(--text-2);padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.06)}
.compare-col li:last-child{border-bottom:none}
.compare-col li svg{flex:0 0 16px;margin-top:6px}
.bar-row{margin-top:26px;display:grid;gap:14px}
.bar-item span{font-size:13px;color:var(--text-3);display:block;margin-bottom:7px}
.bar-out{height:9px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.bar-in{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent))}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;overflow:hidden;background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius-card);backdrop-filter:blur(12px);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.news-card:hover{transform:translateY(-4px);border-color:rgba(20,224,192,.42);box-shadow:var(--shadow-2)}
.news-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:13.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-family:var(--font-num);font-size:12.5px;color:var(--text-3);letter-spacing:-.01em}
@media(min-width:1024px){
  .news-card.feature{grid-column:span 2;flex-direction:row}
  .news-card.feature img{width:50%;aspect-ratio:auto;height:100%;border-bottom:none;border-right:1px solid var(--line)}
  .news-card.feature .news-body{padding:26px}
  .news-card.feature h3{font-size:21px;-webkit-line-clamp:3}
  .news-card.feature p{-webkit-line-clamp:3}
}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:52px 24px;text-align:center;
  background:var(--panel);border:1px dashed var(--panel-border);border-radius:var(--radius-card);
}
.empty-state p{font-size:14px;color:var(--text-2)}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:24px 0;background:none;border:none;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-q .ic{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--panel-border);background:var(--panel);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;color:var(--primary);transition:transform .25s ease,background .25s ease;
}
.faq-item.active .faq-q .ic{transform:rotate(180deg);background:rgba(20,224,192,.16)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{font-size:15px;color:var(--text-2);padding:0 0 24px;line-height:1.8}

/* 表单 */
.form-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:1024px){.form-grid{grid-template-columns:8fr 4fr}}
.form-card{padding:clamp(24px,3vw,34px)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px}
.field-2{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:640px){.field-2{grid-template-columns:1fr 1fr}}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:12px}
.form-side{padding:clamp(22px,2.6vw,30px);display:flex;flex-direction:column;gap:16px}
.form-side li{display:flex;gap:10px;font-size:14px;color:var(--text-2)}
.form-side li svg{flex:0 0 16px;margin-top:6px;color:var(--primary)}
.form-msg{margin-top:14px;font-size:13.5px;color:var(--success);display:none}
.form-msg.show{display:block}

/* 页脚 */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding:clamp(44px,5vw,72px) 0 0;margin-top:clamp(56px,7vw,96px)}
.foot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}}
.foot-col h4{font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.04em}
.foot-col p,.foot-col a{font-size:13.5px;color:var(--text-3);display:block;line-height:2}
.foot-col a:hover{color:var(--primary)}
.foot-bottom{margin-top:38px;padding:20px 0;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:var(--text-3)}

/* roulang page: article */
:root{
  --bg:#07141A;
  --bg-2:#0B1D25;
  --panel:rgba(255,255,255,.055);
  --panel-border:rgba(120,255,230,.14);
  --primary:#14E0C0;
  --primary-hover:#4BF0D6;
  --primary-active:#0BB79C;
  --accent:#7C5CFF;
  --metric:#FFC24B;
  --text:#E6F4F2;
  --text-2:#9FB6B4;
  --text-3:#5E7472;
  --success:#34D399;
  --warn:#FF8A5B;
  --line:rgba(255,255,255,.08);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-1:0 2px 12px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --sidebar-w:240px;
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(720px 460px at 8% -6%,rgba(20,224,192,.13),transparent 66%),
    radial-gradient(620px 420px at 96% 10%,rgba(124,92,255,.13),transparent 68%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;border-radius:var(--radius-img);border:1px solid var(--line)}
button,input,select,textarea{font:inherit;color:inherit}
p{margin:0 0 1.15em}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.01em}
ul,ol{margin:0 0 1.15em}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

#progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:90;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transition:width .12s linear;
}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}

/* ---------- 侧栏导航 ---------- */
.app{position:relative;z-index:1;min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--bg-2);border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px;
  padding:24px 16px;overflow-y:auto;z-index:60;
  transition:transform .3s ease;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:999px}
.sidebar::-webkit-scrollbar-track{background:transparent}

.brand{display:flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  display:grid;place-items:center;font-size:15px;font-weight:700;color:#04161b;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 18px rgba(20,224,192,.35),inset 0 0 0 1px rgba(255,255,255,.18);
}
.brand-text{font-size:15px;font-weight:700;line-height:1.3;letter-spacing:.01em}

.side-label{font-size:11px;letter-spacing:.14em;color:var(--text-3);padding-left:12px}
.side-links{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:48px;padding:0 12px;border-radius:12px;
  font-size:14px;color:var(--text-2);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-link svg{flex:0 0 18px;opacity:.85}
.nav-link:hover{background:rgba(255,255,255,.045);color:var(--text);transform:translateX(2px)}
.nav-link.active{background:var(--panel);color:var(--text);box-shadow:inset 0 0 0 1px var(--panel-border)}
.nav-link.active::before{
  content:"";position:absolute;left:-16px;top:11px;bottom:11px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
  box-shadow:0 0 12px rgba(20,224,192,.6);
}

.status-card{
  margin-top:6px;padding:14px;border-radius:14px;
  background:var(--panel);border:1px solid var(--panel-border);
  backdrop-filter:blur(12px);
}
.status-card .dot{
  display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--success);box-shadow:0 0 10px rgba(52,211,153,.8);margin-right:8px;
}
.status-card .t1{font-size:13px;color:var(--text)}
.status-card .t2{font-size:12px;color:var(--text-3);font-family:var(--font-mono);letter-spacing:-.02em}

.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:8px}
.side-foot .minor{font-size:12px;color:var(--text-3);text-align:center}
.side-foot .minor:hover{color:var(--primary)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#04161b;
  background:linear-gradient(135deg,var(--primary),#29c9e8 70%,var(--accent));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.22),0 8px 28px rgba(20,224,192,.28);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.3),0 12px 34px rgba(20,224,192,.42)}
.btn-primary:active{transform:translateY(1px);background:var(--primary-active)}
.btn-ghost{
  color:var(--text);background:var(--panel);
  border-color:var(--panel-border);backdrop-filter:blur(12px);
}
.btn-ghost:hover{border-color:rgba(20,224,192,.45);transform:translateY(-1px)}
.btn-block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);
  text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(20,224,192,.4);
}
.link-more:hover{text-decoration-color:var(--primary)}
.link-more svg{transition:transform .2s ease}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- 顶部移动栏 ---------- */
.topbar{
  display:none;align-items:center;justify-content:space-between;
  position:sticky;top:0;z-index:75;height:60px;padding:0 18px;
  background:rgba(7,20,26,.92);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.burger{
  width:42px;height:42px;border-radius:12px;background:var(--panel);
  border:1px solid var(--panel-border);display:grid;place-items:center;cursor:pointer;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--text);margin:3px auto;border-radius:2px}
.scrim{
  position:fixed;inset:0;z-index:55;background:rgba(3,10,13,.66);
  backdrop-filter:blur(3px);opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.scrim.show{opacity:1;pointer-events:auto}
.side-close{display:none}

.main-wrap{margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-height:100vh;min-width:0}
.page-main{flex:1;padding:32px 0 0}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding:6px 0 22px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;
  color:var(--text-3);overflow-x:auto;white-space:nowrap;scrollbar-width:none;
}
.breadcrumb::-webkit-scrollbar{display:none}
.breadcrumb a{color:var(--text-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb .cur{color:var(--primary);max-width:52vw;overflow:hidden;text-overflow:ellipsis}

/* ---------- 阅读布局 ---------- */
.reading{
  display:flex;gap:48px;justify-content:center;align-items:flex-start;
  max-width:1280px;margin:0 auto;padding:0 32px 0;
}
.article-main{flex:1 1 auto;max-width:760px;min-width:0}

.toc{display:none}
.toc-card{
  padding:20px;border-radius:var(--radius-card);
  background:var(--panel);border:1px solid var(--panel-border);
  backdrop-filter:blur(12px);
}
.toc-card h4{font-size:13px;letter-spacing:.1em;color:var(--text-3);margin-bottom:12px;font-weight:600}
.toc-link{
  display:block;padding:7px 0 7px 12px;font-size:13.5px;color:var(--text-2);
  border-left:2px solid rgba(255,255,255,.08);line-height:1.5;
  transition:color .2s ease,border-color .2s ease,padding-left .2s ease;
}
.toc-link:hover{color:var(--text);border-color:rgba(20,224,192,.5);padding-left:15px}
.toc-link.on{color:var(--primary);border-color:var(--primary)}

.article-head{padding-bottom:22px;border-bottom:1px solid var(--line)}
.pill{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;
  background:rgba(20,224,192,.12);border:1px solid rgba(20,224,192,.4);color:var(--primary);
}
.pill.accent{background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.42);color:#B9A8FF}
.article-head h1{
  font-size:clamp(26px,3.4vw,40px);line-height:1.22;font-weight:700;
  margin:18px 0 16px;
}
.meta-row{
  display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;
  font-size:13px;color:var(--text-3);font-family:var(--font-mono);letter-spacing:-.02em;
}
.meta-row .sep{width:1px;height:12px;background:var(--line)}
.meta-row strong{color:var(--text-2);font-weight:500;font-family:var(--font-cn);letter-spacing:0}

.article-cover{margin:26px 0 8px}
.article-cover img{width:100%;height:auto;aspect-ratio:16/7;object-fit:cover;border-radius:var(--radius-img)}
.article-cover figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:12px}

/* ---------- 正文排版 ---------- */
.article-body{padding:30px 0 8px;font-size:16px;line-height:1.85;color:#D8E9E7}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:22px;line-height:1.4;color:var(--text);
  margin:40px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.article-body h3{font-size:18px;color:var(--text);margin:30px 0 12px}
.article-body h4{font-size:16px;color:var(--text-2);margin:22px 0 10px}
.article-body ul,.article-body ol{padding-left:22px}
.article-body li{margin:8px 0}
.article-body li::marker{color:var(--primary)}
.article-body blockquote{
  margin:22px 0;padding:18px 20px;font-size:15px;color:var(--text-2);
  border-left:3px solid var(--primary);border-radius:0 12px 12px 0;
  background:rgba(20,224,192,.06);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(20,224,192,.4)}
.article-body a:hover{text-decoration-color:var(--primary)}
.article-body img{margin:22px 0 8px;border-radius:var(--radius-img);border:1px solid var(--line)}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th{
  background:var(--bg-2);color:var(--text);text-align:left;
  padding:12px 14px;font-weight:600;font-size:14px;border-bottom:1px solid var(--line);
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--text-2)}
.article-body tr:last-child td{border-bottom:none}
.article-body code{
  font-family:var(--font-mono);font-size:13.5px;letter-spacing:-.02em;
  padding:2px 6px;border-radius:6px;background:rgba(255,255,255,.07);color:#9FF3E4;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:22px 0}
.table-scroll table{margin:0;min-width:520px}

.empty-state{
  margin:34px 0;padding:44px 28px;text-align:center;
  border-radius:var(--radius-card);background:var(--panel);
  border:1px dashed var(--panel-border);backdrop-filter:blur(12px);
}
.empty-state .ico{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;display:grid;place-items:center;
  background:rgba(20,224,192,.1);border:1px solid var(--panel-border);color:var(--primary);
}
.empty-state h2{font-size:20px;margin-bottom:10px;padding:0}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:20px}

/* ---------- 标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:34px 0 0;padding-top:22px;border-top:1px solid var(--line)}
.tag-row .lead{font-size:12px;letter-spacing:.1em;color:var(--text-3);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;font-size:12px;padding:6px 12px;border-radius:999px;
  background:rgba(20,224,192,.1);border:1px solid rgba(20,224,192,.32);color:#A8F0E2;
  transition:background .2s ease,transform .2s ease;
}
.tag:hover{background:rgba(20,224,192,.2);transform:translateY(-1px)}

/* ---------- 板块通用 ---------- */
.section{padding:clamp(64px,7vw,96px) 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,34px)}
.section-head p{font-size:14px;color:var(--text-2);margin:8px 0 0}

.card{
  border-radius:var(--radius-card);background:var(--panel);
  border:1px solid var(--panel-border);backdrop-filter:blur(12px);
  box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(20,224,192,.42)}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{display:flex;flex-direction:column;overflow:hidden}
.related-card .thumb{aspect-ratio:16/9;border-radius:0;border:none;border-bottom:1px solid var(--line);object-fit:cover;width:100%}
.related-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card h3{font-size:16px;line-height:1.5}
.related-card p{font-size:13.5px;color:var(--text-2);margin:0;line-height:1.7}
.related-card .go{margin-top:auto;font-size:13px;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.related-card:hover .go svg{transform:translateX(4px)}
.related-card .go svg{transition:transform .2s ease}

.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:clamp(26px,3.4vw,40px);border-radius:var(--radius-card);
  background:linear-gradient(135deg,rgba(20,224,192,.14),rgba(124,92,255,.14)),var(--bg-2);
  border:1px solid var(--panel-border);box-shadow:inset 0 0 0 1px rgba(255,255,255,.03);
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);margin-bottom:10px}
.cta-band p{font-size:14.5px;color:var(--text-2);margin:0;max-width:58ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:24px 4px;font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .sign{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  border:1px solid var(--panel-border);color:var(--primary);font-size:15px;line-height:1;
  transition:transform .25s ease,background .25s ease;
}
.faq-item[open] summary .sign{transform:rotate(180deg);background:rgba(20,224,192,.12)}
.faq-item .ans{padding:0 4px 24px;font-size:15px;color:var(--text-2);max-width:76ch}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(72px,8vw,110px);background:var(--bg-2);
  border-top:1px solid var(--line);padding:56px 0 26px;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.foot-col h4{font-size:14px;letter-spacing:.06em;margin-bottom:14px;color:var(--text)}
.foot-col p{font-size:13.5px;color:var(--text-3);line-height:1.8;margin:0 0 8px}
.foot-col a{display:block;font-size:13.5px;color:var(--text-2);padding:5px 0;transition:color .2s ease,transform .2s ease}
.foot-col a:hover{color:var(--primary);transform:translateX(3px)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .reading{max-width:820px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .sidebar{transform:translateX(-100%);width:280px;max-width:86vw;box-shadow:0 24px 60px rgba(0,0,0,.6)}
  .sidebar.open{transform:translateX(0)}
  .side-close{display:grid;place-items:center;position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.06);border:1px solid var(--line);cursor:pointer;color:var(--text-2);font-size:16px;line-height:1}
  .nav-link.active::before{left:-16px}
  .main-wrap{margin-left:0}
  .container{padding:0 24px}
  .reading{padding:0 24px;flex-direction:column;gap:0}
  .article-main{max-width:none}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
}
@media (max-width:900px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .reading{padding:0 18px}
  .page-main{padding-top:20px}
  .article-head h1{margin:14px 0 12px}
  .article-body table{font-size:13.5px}
  .article-body{font-size:15.5px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .cta-band{padding:24px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .breadcrumb .cur{max-width:44vw}
}

/* roulang page: category1 */
:root{
    --bg:#07141A;
    --bg-2:#0B1D25;
    --panel:rgba(255,255,255,.055);
    --panel-border:rgba(120,255,230,.14);
    --primary:#14E0C0;
    --primary-hover:#4BF0D6;
    --primary-active:#0BB79C;
    --accent:#7C5CFF;
    --metric:#FFC24B;
    --text:#E6F4F2;
    --text-2:#9FB6B4;
    --text-3:#5E7472;
    --success:#34D399;
    --warn:#FF8A5B;
    --line:rgba(255,255,255,.08);
    --radius-card:18px;
    --radius-btn:12px;
    --radius-pill:999px;
    --radius-img:14px;
    --shadow-1:0 2px 12px rgba(0,0,0,.35);
    --shadow-2:0 16px 40px rgba(0,0,0,.45);
    --glow:0 0 0 1px rgba(20,224,192,.35), 0 8px 28px rgba(20,224,192,.28);
    --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    --font-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  }

  *,*::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-cn);
    font-size:16px;
    line-height:1.85;
    text-align:left;
    -webkit-font-smoothing:antialiased;
  }
  body.no-scroll{overflow:hidden;}
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4,p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  input,select,textarea{font-family:inherit;font-size:inherit;}
  ::selection{background:rgba(20,224,192,.28);}

  .container{width:100%;max-width:1280px;margin:0 auto;padding:0 18px;}
  @media(min-width:640px){.container{padding:0 24px;}}
  @media(min-width:1024px){.container{padding:0 32px;}}

  .mono{font-family:var(--font-mono);letter-spacing:-.02em;}

  /* ---------- 布局骨架 ---------- */
  .layout{min-height:100vh;position:relative;}
  .sidebar{display:none;}
  @media(min-width:1024px){
    .sidebar{
      display:flex;
      flex-direction:column;
      position:fixed;
      top:0;left:0;bottom:0;
      width:240px;
      padding:22px 16px 20px;
      background:var(--bg-2);
      border-right:1px solid var(--line);
      z-index:40;
      overflow-y:auto;
      scrollbar-width:thin;
      scrollbar-color:rgba(20,224,192,.3) transparent;
    }
    .sidebar::-webkit-scrollbar{width:6px;}
    .sidebar::-webkit-scrollbar-thumb{background:rgba(20,224,192,.25);border-radius:999px;}
    .content{margin-left:240px;}
  }
  @media(min-width:1440px){
    .sidebar{width:264px;}
    .content{margin-left:264px;}
  }

  /* ---------- 侧栏品牌与导航 ---------- */
  .brand{display:flex;align-items:center;gap:11px;padding:4px 6px 0;}
  .brand-mark{
    width:36px;height:36px;flex:0 0 36px;
    border-radius:11px;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    display:flex;align-items:center;justify-content:center;
    color:#04211C;
    box-shadow:0 8px 24px rgba(20,224,192,.3);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;}
  .brand-name{font-size:15px;font-weight:700;letter-spacing:.01em;}
  .brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.06em;}

  .side-links{display:flex;flex-direction:column;gap:4px;margin-top:26px;}
  .nav-link{
    position:relative;
    display:flex;align-items:center;gap:10px;
    min-height:44px;
    padding:9px 12px;
    border-radius:var(--radius-btn);
    color:var(--text-2);
    font-size:14px;
    transition:background .18s ease,color .18s ease,transform .18s ease;
  }
  .nav-link svg{flex:0 0 18px;opacity:.85;}
  .nav-link:hover{background:rgba(255,255,255,.05);color:var(--text);}
  .nav-link.active{background:var(--panel);color:var(--text);}
  .nav-link.active::before{
    content:'';
    position:absolute;left:0;top:10px;bottom:10px;width:3px;
    border-radius:3px;background:var(--primary);
    box-shadow:0 0 10px rgba(20,224,192,.7);
  }
  .nav-link:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

  .side-status{
    margin-top:22px;
    padding:14px 15px;
    border:1px solid var(--panel-border);
    background:var(--panel);
    border-radius:var(--radius-card);
    backdrop-filter:blur(12px);
  }
  .side-status strong{display:block;font-size:13px;color:var(--text);font-weight:600;}
  .side-status span{display:block;font-size:12px;color:var(--text-3);margin-top:4px;}
  .dot-live{
    display:inline-block;width:7px;height:7px;border-radius:50%;
    background:var(--success);margin-right:6px;
    box-shadow:0 0 8px rgba(52,211,153,.8);
  }

  .side-foot{margin-top:auto;padding-top:20px;}
  .btn-block{width:100%;}

  /* ---------- 移动端顶栏与抽屉 ---------- */
  .topbar{
    position:sticky;top:0;z-index:50;
    display:flex;align-items:center;justify-content:space-between;
    height:60px;padding:0 18px;
    background:rgba(7,20,26,.94);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  @media(min-width:1024px){.topbar{display:none;}}
  .topbar-brand{display:flex;align-items:center;gap:9px;}
  .topbar-brand .brand-name{font-size:14px;}
  .burger{
    width:42px;height:42px;
    display:flex;align-items:center;justify-content:center;
    border:1px solid var(--panel-border);
    background:var(--panel);
    border-radius:12px;
  }
  .burger:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

  .drawer{
    position:fixed;inset:0;z-index:60;
    display:flex;flex-direction:column;
    padding:18px;
    background:rgba(7,20,26,.96);
    backdrop-filter:blur(16px);
    transform:translateX(102%);
    transition:transform .28s ease;
  }
  .drawer.open{transform:translateX(0);}
  @media(min-width:1024px){.drawer{display:none;}}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);}
  .drawer-close{
    width:40px;height:40px;border-radius:12px;
    border:1px solid var(--panel-border);background:var(--panel);
    display:flex;align-items:center;justify-content:center;
  }
  .drawer-links{display:flex;flex-direction:column;margin-top:14px;}
  .drawer-links a{
    display:flex;align-items:center;justify-content:space-between;
    height:48px;padding:0 6px;
    font-size:15px;color:var(--text-2);
    border-bottom:1px solid var(--line);
  }
  .drawer-links a.active{color:var(--primary);}
  .drawer-foot{margin-top:auto;padding-top:18px;}

  /* ---------- 按钮 / 标签 / 链接 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;
    border:1px solid transparent;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--primary),#0FBFA6);
    color:#04211C;
    box-shadow:var(--glow);
  }
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(20,224,192,.5),0 14px 34px rgba(20,224,192,.4);}
  .btn-primary:active{transform:translateY(1px);background:var(--primary-active);}
  .btn-ghost{
    background:var(--panel);
    border-color:var(--panel-border);
    color:var(--text);
    backdrop-filter:blur(12px);
  }
  .btn-ghost:hover{border-color:rgba(20,224,192,.5);color:var(--primary-hover);}
  .btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
  .btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;}

  .pill{
    display:inline-flex;align-items:center;gap:6px;
    padding:6px 12px;border-radius:var(--radius-pill);
    font-size:12px;letter-spacing:.06em;
    color:var(--primary);
    background:rgba(20,224,192,.12);
    border:1px solid rgba(20,224,192,.4);
  }
  .pill-muted{
    color:var(--text-2);
    background:rgba(255,255,255,.05);
    border-color:var(--line);
  }

  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:600;color:var(--primary);
    border-bottom:1px solid transparent;
    transition:border-color .18s ease,gap .18s ease;
  }
  .text-link:hover{border-bottom-color:var(--primary);gap:10px;}
  .text-link:focus-visible{outline:2px solid var(--primary);outline-offset:3px;}

  /* ---------- 面包屑 ---------- */
  .crumb{
    display:flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.06em;color:var(--text-3);
    margin-bottom:16px;
    overflow-x:auto;white-space:nowrap;
  }
  .crumb a{color:var(--text-3);transition:color .18s ease;}
  .crumb a:hover{color:var(--primary);}
  .crumb .sep{color:var(--text-3);}
  .crumb .cur{color:var(--primary);}

  /* ---------- 通用板块 ---------- */
  .section{padding:clamp(56px,7vw,96px) 0;}
  .section-head{max-width:760px;margin-bottom:36px;}
  .section-head h2{
    font-size:clamp(24px,3vw,34px);
    font-weight:700;line-height:1.25;
    letter-spacing:.01em;
  }
  .section-desc{margin-top:14px;font-size:15px;color:var(--text-2);line-height:1.85;}
  .divider{height:1px;background:linear-gradient(90deg,transparent,rgba(20,224,192,.35),transparent);border:0;margin:0;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    overflow:hidden;
    padding:38px 0 clamp(40px,5vw,64px);
    background:
      radial-gradient(560px 340px at 12% -10%,rgba(20,224,192,.16),transparent 70%),
      radial-gradient(520px 320px at 92% 6%,rgba(124,92,255,.14),transparent 72%);
    border-bottom:1px solid var(--line);
  }
  .hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;}
  @media(min-width:1024px){
    .hero-grid{grid-template-columns:7fr 5fr;gap:48px;}
    .hero{min-height:340px;}
  }
  .hero h1{
    font-size:clamp(28px,4.2vw,44px);
    font-weight:700;line-height:1.18;
    margin-top:16px;
  }
  .hero-sub{
    margin-top:16px;
    font-size:17px;line-height:1.8;
    color:var(--text-2);
    max-width:620px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
  .hero-meta li{
    display:inline-flex;align-items:center;gap:7px;
    font-size:13px;color:var(--text-2);
    padding:7px 12px;border-radius:var(--radius-pill);
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
  }
  .hero-meta li i{
    width:6px;height:6px;border-radius:50%;background:var(--primary);
    box-shadow:0 0 8px rgba(20,224,192,.8);
  }
  .hero-visual{position:relative;}
  .hero-visual img{
    width:100%;
    border-radius:var(--radius-card);
    border:1px solid var(--panel-border);
    box-shadow:var(--shadow-2);
    object-fit:cover;
    aspect-ratio:16/10;
  }
  .hero-visual::after{
    content:'';
    position:absolute;inset:0;
    border-radius:var(--radius-card);
    background:linear-gradient(180deg,rgba(7,20,26,0) 45%,rgba(7,20,26,.68) 100%);
    pointer-events:none;
  }
  .float-card{
    position:absolute;
    left:18px;bottom:18px;z-index:2;
    display:flex;align-items:baseline;gap:10px;
    padding:12px 16px;
    border-radius:14px;
    background:rgba(11,29,37,.78);
    border:1px solid var(--panel-border);
    backdrop-filter:blur(12px);
    box-shadow:var(--shadow-1);
  }
  .float-card .num{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--metric);}
  .float-card .lbl{font-size:12px;color:var(--text-2);}

  /* ---------- 时间轴 ---------- */
  .steps-grid{display:grid;grid-template-columns:1fr;gap:34px;}
  @media(min-width:1024px){
    .steps-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:start;}
  }
  .timeline{display:flex;flex-direction:column;}
  .tl-item{position:relative;display:flex;gap:18px;padding-bottom:28px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-item:not(:last-child)::after{
    content:'';
    position:absolute;left:16.5px;top:44px;bottom:4px;width:1px;
    background:linear-gradient(180deg,rgba(20,224,192,.5),rgba(124,92,255,.22));
  }
  .tl-dot{
    flex:0 0 34px;width:34px;height:34px;
    display:flex;align-items:center;justify-content:center;
    border-radius:50%;
    background:var(--bg-2);
    border:1px solid rgba(20,224,192,.45);
    box-shadow:0 0 0 4px rgba(20,224,192,.06);
    font-family:var(--font-mono);
    font-size:12px;color:var(--primary);
    position:relative;z-index:1;
  }
  .tl-body h3{font-size:19px;font-weight:600;line-height:1.4;}
  .tl-body p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.85;}
  .tl-tip{
    display:inline-block;margin-top:10px;
    font-family:var(--font-mono);font-size:12px;
    color:var(--metric);
    background:rgba(255,194,75,.1);
    border:1px solid rgba(255,194,75,.28);
    padding:4px 10px;border-radius:var(--radius-pill);
  }
  .steps-aside{display:flex;flex-direction:column;gap:18px;}
  .steps-aside img{
    width:100%;border-radius:var(--radius-card);
    border:1px solid var(--panel-border);
    aspect-ratio:4/3;object-fit:cover;
    box-shadow:var(--shadow-1);
  }
  .aside-note{
    padding:20px 22px;
    border-radius:var(--radius-card);
    background:linear-gradient(135deg,rgba(20,224,192,.14),rgba(124,92,255,.12));
    border:1px solid var(--panel-border);
    backdrop-filter:blur(12px);
  }
  .aside-note h4{font-size:15px;font-weight:600;}
  .aside-note p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.8;}

  /* ---------- 卡片通用 ---------- */
  .card{
    background:var(--panel);
    border:1px solid var(--panel-border);
    border-radius:var(--radius-card);
    backdrop-filter:blur(12px);
    box-shadow:var(--shadow-1);
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .card:hover{transform:translateY(-4px);border-color:rgba(20,224,192,.45);box-shadow:var(--shadow-2);}

  .grid-2{display:grid;grid-template-columns:1fr;gap:18px;}
  @media(min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr);gap:22px;}}

  .point-card{
    position:relative;
    padding:26px 24px 24px;
    overflow:hidden;
  }
  .point-card::before{
    content:'';
    position:absolute;left:0;right:0;top:0;height:2px;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    opacity:.75;
  }
  .point-num{
    font-family:var(--font-mono);
    font-size:32px;font-weight:700;
    color:rgba(20,224,192,.4);
    letter-spacing:-.03em;
    line-height:1;
  }
  .point-card h3{margin-top:14px;font-size:19px;font-weight:600;}
  .point-card p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.85;}
  .point-foot{
    margin-top:18px;
    display:flex;align-items:center;gap:8px;
    font-size:13px;color:var(--text-3);
  }
  .point-foot .arrow{color:var(--primary);transition:transform .18s ease;}
  .point-card:hover .point-foot .arrow{transform:translateX(4px);}

  /* ---------- 环境准备图文 ---------- */
  .prep-grid{display:grid;grid-template-columns:1fr;gap:30px;align-items:center;}
  @media(min-width:1024px){
    .prep-grid{grid-template-columns:5fr 7fr;gap:52px;}
  }
  .prep-grid img{
    width:100%;border-radius:var(--radius-card);
    border:1px solid var(--panel-border);
    aspect-ratio:4/3;object-fit:cover;
    box-shadow:var(--shadow-1);
  }
  .prep-list{display:flex;flex-direction:column;gap:14px;margin-top:24px;}
  .prep-list li{
    display:flex;gap:12px;
    padding:14px 16px;
    border-radius:14px;
    background:rgba(255,255,255,.035);
    border:1px solid var(--line);
    transition:background .18s ease,border-color .18s ease;
  }
  .prep-list li:hover{background:rgba(255,255,255,.06);border-color:var(--panel-border);}
  .prep-list .tick{
    flex:0 0 22px;width:22px;height:22px;margin-top:3px;
    border-radius:50%;
    background:rgba(20,224,192,.14);
    border:1px solid rgba(20,224,192,.4);
    display:flex;align-items:center;justify-content:center;
    color:var(--primary);
  }
  .prep-list h4{font-size:15px;font-weight:600;}
  .prep-list p{font-size:14px;color:var(--text-2);line-height:1.8;margin-top:4px;}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:880px;margin:0 auto;}
  .faq-list{margin-top:8px;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:24px 0;
    font-size:16.5px;font-weight:600;line-height:1.6;
    text-align:left;
    transition:color .18s ease;
  }
  .faq-q:hover{color:var(--primary);}
  .faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
  .faq-icon{flex:0 0 22px;transition:transform .2s ease;color:var(--primary);}
  .faq-item.open .faq-icon{transform:rotate(180deg);}
  .faq-icon .vline{transition:opacity .2s ease;}
  .faq-item.open .faq-icon .vline{opacity:0;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
  .faq-item.open .faq-a{max-height:400px;}
  .faq-a-inner{padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:760px;}

  /* ---------- CTA 横条 ---------- */
  .cta-bar{
    display:grid;grid-template-columns:1fr;gap:22px;
    padding:30px 26px;
    border-radius:var(--radius-card);
    background:linear-gradient(135deg,rgba(20,224,192,.14),rgba(124,92,255,.12));
    border:1px solid var(--panel-border);
    backdrop-filter:blur(12px);
    box-shadow:var(--shadow-1);
  }
  @media(min-width:900px){
    .cta-bar{grid-template-columns:1.4fr .9fr;align-items:center;padding:38px 40px;gap:32px;}
  }
  .cta-bar h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.3;}
  .cta-bar p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.8;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:clamp(48px,6vw,80px);
    background:var(--bg-2);
    border-top:1px solid var(--line);
    padding:clamp(40px,5vw,64px) 0 0;
  }
  .foot-grid{
    display:grid;grid-template-columns:1fr;gap:30px;
    padding-bottom:36px;
  }
  @media(min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr);gap:28px;}}
  @media(min-width:1024px){.foot-grid{grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px;}}
  .foot-col h4{font-size:15px;font-weight:700;margin-bottom:14px;}
  .foot-col p{font-size:13.5px;color:var(--text-2);line-height:1.8;margin-bottom:8px;}
  .foot-col a{
    display:block;
    font-size:13.5px;color:var(--text-2);
    padding:5px 0;
    transition:color .18s ease,transform .18s ease;
  }
  .foot-col a:hover{color:var(--primary);transform:translateX(2px);}
  .foot-bottom{
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    padding:20px 0 26px;
    border-top:1px solid var(--line);
    font-size:12.5px;color:var(--text-3);
  }

  @media (prefers-reduced-motion: reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category3 */
:root{
  --bg:#07141A;
  --bg-2:#0B1D25;
  --panel:rgba(255,255,255,.055);
  --panel-border:rgba(120,255,230,.14);
  --primary:#14E0C0;
  --primary-hover:#4BF0D6;
  --primary-active:#0BB79C;
  --accent:#7C5CFF;
  --metric:#FFC24B;
  --text:#E6F4F2;
  --text-2:#9FB6B4;
  --text-3:#5E7472;
  --success:#34D399;
  --warn:#FF8A5B;
  --line:rgba(255,255,255,.08);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-1:0 2px 12px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  text-align:left;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
.mono{font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:-0.02em;}

.container{max-width:1280px;margin:0 auto;padding:0 32px;}

/* ============ 布局 ============ */
.layout{display:flex;min-height:100vh;}
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--bg-2);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:22px 16px 18px;z-index:60;
}
.sidebar::-webkit-scrollbar{width:6px;}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px;}
.brand{display:flex;align-items:center;gap:10px;padding:0 8px 20px;border-bottom:1px solid var(--line);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 36px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 0 1px rgba(20,224,192,.45),0 8px 28px rgba(20,224,192,.28);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:11px;border-radius:4px;background:rgba(7,20,26,.85);
}
.brand-text{font-size:15px;font-weight:700;line-height:1.3;}
.side-links{display:flex;flex-direction:column;gap:4px;margin:20px 0 16px;}
.nav-link{
  display:flex;align-items:center;gap:10px;
  height:46px;padding:0 12px;border-radius:12px;
  font-size:14px;color:var(--text-2);
  border-left:3px solid transparent;
  transition:background .2s,color .2s,border-color .2s,transform .2s;
}
.nav-link svg{flex:0 0 18px;opacity:.85;}
.nav-link:hover{background:rgba(255,255,255,.05);color:var(--text);transform:translateX(2px);}
.nav-link.active{
  background:var(--panel);
  border-left-color:var(--primary);
  color:var(--text);
  box-shadow:inset 0 0 0 1px var(--panel-border);
}
.side-status{
  margin-top:auto;margin-bottom:14px;padding:14px 14px;
  background:var(--panel);border:1px solid var(--panel-border);border-radius:14px;
}
.side-status .st-row{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(52,211,153,.15);}
.side-status .st-num{font-size:13px;color:var(--text-3);margin-top:6px;}
.side-foot{display:flex;flex-direction:column;gap:10px;}

.main-area{margin-left:var(--sidebar-w);flex:1;min-width:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s,box-shadow .18s,background .18s,border-color .18s,color .18s;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#25C9E8);
  color:#04211C;
  box-shadow:0 0 0 1px rgba(20,224,192,.55),0 8px 28px rgba(20,224,192,.28);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(20,224,192,.7),0 14px 36px rgba(20,224,192,.42);}
.btn-primary:active{transform:translateY(1px);background:var(--primary-active);}
.btn-ghost{
  background:var(--panel);border-color:var(--panel-border);color:var(--text);
}
.btn-ghost:hover{border-color:rgba(20,224,192,.4);transform:translateY(-1px);}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);
  text-decoration:underline;text-underline-offset:4px;
}
.link-arrow:hover{color:var(--primary-hover);}
.link-arrow span.ar{transition:transform .2s;}
.link-arrow:hover span.ar{transform:translateX(4px);}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:80;
  background:rgba(11,29,37,.92);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 18px;
}
.topbar .tb-brand{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:700;}
.topbar .tb-brand .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:9px;}
.topbar .tb-brand .brand-mark::after{inset:9px;}
.hamburger{
  width:42px;height:42px;border-radius:11px;background:var(--panel);
  border:1px solid var(--panel-border);display:flex;align-items:center;justify-content:center;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);position:relative;}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}
.drawer{
  position:fixed;inset:60px 0 0 0;background:rgba(7,20,26,.97);backdrop-filter:blur(14px);
  z-index:70;padding:20px 18px;display:none;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.open{display:flex;}
.drawer .nav-link{height:48px;font-size:15px;justify-content:space-between;}
.drawer .nav-link .ar{color:var(--text-3);}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--text-3);
  padding:26px 0 0;
}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--text-3);}
.crumb .now{color:var(--primary);}

/* ============ 窄 Hero ============ */
.cat-hero{
  position:relative;margin-top:22px;min-height:320px;border-radius:22px;overflow:hidden;
  border:1px solid var(--panel-border);background:var(--bg-2);
  display:grid;grid-template-columns:1.15fr .85fr;align-items:stretch;
}
.cat-hero::before{
  content:"";position:absolute;width:520px;height:520px;left:-160px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,224,192,.18),transparent 62%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;bottom:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,92,255,.16),transparent 62%);
  pointer-events:none;
}
.hero-copy{position:relative;z-index:2;padding:44px 20px 44px 40px;display:flex;flex-direction:column;justify-content:center;gap:18px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:12px;letter-spacing:.06em;padding:6px 12px;border-radius:999px;
  background:rgba(20,224,192,.12);border:1px solid rgba(20,224,192,.4);color:var(--primary);
}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,44px);font-weight:700;line-height:1.2;letter-spacing:-.01em;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px;}
.hero-media{position:relative;z-index:1;min-height:320px;}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.92;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,var(--bg-2) 0%,rgba(11,29,37,.4) 42%,rgba(11,29,37,.05) 100%);
}

/* ============ 通用板块 ============ */
.section{padding:clamp(58px,7vw,98px) 0 0;}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.25;}
.sec-head p{font-size:15px;color:var(--text-2);max-width:620px;}
.eyebrow{
  font-size:12px;letter-spacing:.16em;color:var(--primary);
  text-transform:uppercase;margin-bottom:10px;display:block;
}

/* ============ Zigzag ============ */
.zigzag{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:0 0 96px;
}
.zigzag:last-of-type{padding-bottom:0;}
.zigzag.reverse .zz-media{order:2;}
.zz-media{position:relative;}
.zz-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-card);border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.zz-media .zz-badge{
  position:absolute;left:18px;bottom:-16px;
  background:rgba(11,29,37,.92);border:1px solid var(--panel-border);border-radius:14px;
  padding:12px 16px;display:flex;align-items:center;gap:12px;backdrop-filter:blur(10px);
}
.zz-badge b{font-size:20px;font-weight:700;color:var(--metric);}
.zz-badge small{font-size:12px;color:var(--text-3);display:block;}
.zz-index{
  font-size:13px;color:rgba(20,224,192,.5);letter-spacing:.16em;margin-bottom:12px;display:block;
}
.zz-body h2{font-size:clamp(22px,2.5vw,30px);font-weight:700;line-height:1.3;margin-bottom:14px;}
.zz-body > p{font-size:15.5px;color:var(--text-2);margin-bottom:20px;}
.zz-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px;}
.zz-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.7;}
.zz-list li .tick{
  flex:0 0 20px;width:20px;height:20px;border-radius:6px;margin-top:4px;
  background:rgba(20,224,192,.14);border:1px solid rgba(20,224,192,.4);
  display:flex;align-items:center;justify-content:center;
}
.zz-list li .tick svg{width:11px;height:11px;stroke:var(--primary);}

/* ============ 玻璃卡双列 ============ */
.glass-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.glass-card{
  background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius-card);
  padding:28px;backdrop-filter:blur(12px);
  transition:transform .22s,box-shadow .22s,border-color .22s;
  position:relative;overflow:hidden;
}
.glass-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  opacity:.7;
}
.glass-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(20,224,192,.45);}
.glass-card h3{font-size:20px;font-weight:600;margin-bottom:12px;}
.glass-card p{font-size:15px;color:var(--text-2);margin-bottom:16px;}
.mini-list{display:flex;flex-direction:column;gap:10px;}
.mini-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2);}
.mini-list li .sq{width:6px;height:6px;border-radius:2px;background:var(--primary);flex:0 0 6px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:24px 0;font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--primary);}
.faq-q .plus{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  border:1px solid var(--panel-border);background:var(--panel);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;color:var(--primary);
  transition:transform .2s;
}
.faq-item.open .faq-q .plus{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a p{padding:0 0 24px;font-size:15px;color:var(--text-2);line-height:1.8;}

/* ============ CTA 横条 ============ */
.cta-bar{
  margin-top:clamp(58px,7vw,98px);
  border-radius:22px;border:1px solid var(--panel-border);
  background:linear-gradient(135deg,rgba(20,224,192,.14),rgba(124,92,255,.12));
  padding:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  position:relative;overflow:hidden;
}
.cta-bar::after{
  content:"";position:absolute;width:420px;height:420px;right:-140px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,224,192,.22),transparent 62%);
}
.cta-bar h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;position:relative;z-index:2;}
.cta-bar p{font-size:15px;color:var(--text-2);margin-top:10px;position:relative;z-index:2;max-width:620px;}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:clamp(58px,7vw,98px);
  background:var(--bg-2);border-top:1px solid var(--line);
  padding:56px 0 26px;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.foot-col h4{font-size:15px;font-weight:700;margin-bottom:14px;}
.foot-col p{font-size:13.5px;color:var(--text-2);margin-bottom:8px;line-height:1.75;}
.foot-col a{display:block;font-size:13.5px;color:var(--text-2);padding:5px 0;transition:color .2s,transform .2s;}
.foot-col a:hover{color:var(--primary);transform:translateX(2px);}
.foot-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  :root{--sidebar-w:264px;}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  .main-area{margin-left:0;padding-top:60px;}
  .container{padding:0 24px;}
  .cat-hero{grid-template-columns:1fr;}
  .hero-copy{padding:34px 26px;}
  .hero-media{min-height:210px;max-height:260px;}
  .hero-media::after{background:linear-gradient(0deg,var(--bg-2) 0%,rgba(11,29,37,.35) 70%,transparent 100%);}
  .zigzag{grid-template-columns:1fr;gap:34px;padding-bottom:72px;}
  .zigzag.reverse .zz-media{order:0;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px;}
}
@media (max-width:767px){
  .glass-grid{grid-template-columns:1fr;}
  .sec-head{flex-direction:column;align-items:flex-start;}
  .cta-bar{padding:28px 22px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .cat-hero{border-radius:18px;}
  .hero-copy{padding:26px 20px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;gap:6px;}
  .zz-media img{aspect-ratio:16/11;}
}

/* roulang page: category2 */
:root{
    --bg:#07141A;
    --bg-2:#0B1D25;
    --panel:rgba(255,255,255,.055);
    --panel-border:rgba(120,255,230,.14);
    --primary:#14E0C0;
    --primary-h:#4BF0D6;
    --primary-a:#0BB79C;
    --accent:#7C5CFF;
    --metric:#FFC24B;
    --text:#E6F4F2;
    --text-2:#9FB6B4;
    --text-3:#5E7472;
    --ok:#34D399;
    --warn:#FF8A5B;
    --r-card:18px;
    --r-btn:12px;
    --r-pill:999px;
    --r-img:14px;
    --shadow-1:0 2px 12px rgba(0,0,0,.35);
    --shadow-2:0 16px 40px rgba(0,0,0,.45);
    --glow:0 8px 28px rgba(20,224,192,.28);
    --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  html body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:0;}
  h1{font-size:clamp(30px,4.6vw,52px);line-height:1.18;font-weight:700;}
  h2{font-size:clamp(24px,3vw,34px);font-weight:700;}
  h3{font-size:20px;font-weight:600;line-height:1.35;}
  h4{font-size:15px;font-weight:700;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  img{display:block;max-width:100%;height:auto;border-radius:var(--r-img);border:1px solid rgba(255,255,255,.08);}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  ::selection{background:rgba(20,224,192,.28);}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

  .container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}

  /* ---------- 侧栏 ---------- */
  .sidebar{
    position:fixed;top:0;left:0;width:240px;height:100vh;
    background:var(--bg-2);border-right:1px solid rgba(255,255,255,.08);
    display:flex;flex-direction:column;gap:20px;padding:22px 16px;
    overflow-y:auto;z-index:50;
  }
  .sidebar::-webkit-scrollbar{width:6px;}
  .sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:999px;}
  .brand{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--text);}
  .brand-mark{
    width:34px;height:34px;flex:0 0 34px;border-radius:11px;display:grid;place-items:center;
    font-size:15px;font-weight:700;color:#04161C;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    box-shadow:var(--glow);
  }
  .brand-text{line-height:1.2;}
  .side-links{display:flex;flex-direction:column;gap:4px;}
  .nav-link{
    position:relative;display:flex;align-items:center;gap:10px;min-height:44px;
    padding:10px 12px;border-radius:12px;font-size:14px;color:var(--text-2);
    border:1px solid transparent;transition:background .2s,color .2s,border-color .2s;
  }
  .nav-link svg{flex:0 0 auto;opacity:.85;}
  .nav-link:hover{background:rgba(255,255,255,.045);color:var(--text);}
  .nav-link.active{background:var(--panel);border-color:var(--panel-border);color:var(--text);}
  .nav-link.active::before{
    content:"";position:absolute;left:-1px;top:50%;transform:translateY(-50%);
    width:3px;height:20px;border-radius:3px;background:var(--primary);
    box-shadow:0 0 12px rgba(20,224,192,.85);
  }
  .side-card{
    margin-top:auto;padding:14px;border-radius:14px;background:var(--panel);
    border:1px solid var(--panel-border);font-size:12.5px;color:var(--text-2);line-height:1.7;
  }
  .side-card strong{display:flex;align-items:center;gap:8px;color:var(--text);font-size:13px;margin-bottom:6px;}
  .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(20,224,192,.9);}
  .side-foot{display:flex;flex-direction:column;gap:10px;}
  .side-foot .text-link{align-self:center;}

  /* ---------- 主区 ---------- */
  .main{margin-left:240px;min-width:0;}

  /* ---------- 移动端顶栏与抽屉 ---------- */
  .topbar{display:none;}
  .hamburger{
    width:42px;height:42px;border-radius:12px;border:1px solid var(--panel-border);
    background:var(--panel);display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:5px;cursor:pointer;padding:0;
  }
  .hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s;}
  .drawer{
    position:fixed;inset:0;z-index:70;background:rgba(7,20,26,.97);backdrop-filter:blur(16px);
    padding:22px 18px 30px;display:flex;flex-direction:column;gap:12px;
    transform:translateY(-100%);visibility:hidden;transition:transform .32s ease,visibility .32s;
  }
  .drawer.open{transform:translateY(0);visibility:visible;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;height:48px;padding:0 14px;
    border-radius:12px;background:var(--panel);border:1px solid var(--panel-border);
    font-size:15px;color:var(--text-2);
  }
  .drawer-link.active{color:var(--text);border-color:rgba(20,224,192,.5);}
  .drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}

  /* ---------- 按钮 / 标签 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;
    padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;white-space:nowrap;
    transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--primary-h),var(--primary));
    color:#04161C;box-shadow:var(--glow);
  }
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 12px 34px rgba(20,224,192,.42);}
  .btn-primary:active{transform:translateY(1px);background:var(--primary-a);box-shadow:0 4px 16px rgba(20,224,192,.25);}
  .btn-ghost{background:var(--panel);border-color:var(--panel-border);color:var(--text);}
  .btn-ghost:hover{border-color:rgba(20,224,192,.5);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(1px);background:rgba(255,255,255,.09);}
  .btn-block{width:100%;}
  .pill{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;
    padding:6px 12px;border-radius:var(--r-pill);
    background:rgba(20,224,192,.12);border:1px solid rgba(20,224,192,.4);color:var(--primary);
  }
  .pill-mute{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.14);color:var(--text-2);}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
    text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
  }
  .text-link svg{transition:transform .2s;}
  .text-link:hover{color:var(--primary-h);}
  .text-link:hover svg{transform:translateX(4px);}

  /* ---------- 玻璃卡 ---------- */
  .glass{
    background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--r-card);
    backdrop-filter:blur(12px);box-shadow:var(--shadow-1);
    transition:transform .24s,border-color .24s,box-shadow .24s;
  }
  .glass-hover:hover{transform:translateY(-4px);border-color:rgba(20,224,192,.45);box-shadow:var(--shadow-2);}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;overflow:hidden;padding:clamp(48px,6vw,84px) 0 clamp(56px,6vw,88px);
    border-bottom:1px solid rgba(255,255,255,.08);
    background:
      radial-gradient(720px 380px at 88% -10%, rgba(124,92,255,.20), transparent 70%),
      radial-gradient(620px 420px at 2% 96%, rgba(20,224,192,.16), transparent 72%),
      linear-gradient(180deg, rgba(7,20,26,.74), rgba(7,20,26,.96)),
      url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  }
  .hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
  .crumbs{
    display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;color:var(--text-3);
    margin-bottom:18px;white-space:nowrap;overflow-x:auto;
  }
  .crumbs a:hover{color:var(--primary);}
  .crumbs .sep{color:var(--text-3);}
  .crumbs .now{color:var(--primary);}
  .hero h1{margin:16px 0 18px;max-width:16em;}
  .hero .lead{font-size:16.5px;color:var(--text-2);max-width:34em;}
  .actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-visual{position:relative;}
  .hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:18px;border:1px solid rgba(20,224,192,.35);}
  .hero-visual::after{
    content:"";position:absolute;inset:0;border-radius:18px;
    background:linear-gradient(180deg,rgba(7,20,26,0) 45%,rgba(7,20,26,.72) 100%);
    pointer-events:none;
  }
  .float-card{
    position:absolute;left:18px;bottom:18px;z-index:2;
    display:flex;flex-direction:column;gap:2px;padding:12px 16px;border-radius:14px;
    background:rgba(11,29,37,.78);border:1px solid var(--panel-border);backdrop-filter:blur(10px);
  }
  .float-card strong{font-family:var(--mono);font-size:24px;color:var(--metric);line-height:1.1;letter-spacing:-.02em;}
  .float-card span{font-size:12px;color:var(--text-2);}

  /* ---------- 板块通用 ---------- */
  .section{padding:clamp(64px,8vw,112px) 0;}
  .section-tight{padding:clamp(48px,6vw,80px) 0;}
  .sec-head{margin-bottom:32px;}
  .sec-head .eyebrow{font-size:12px;letter-spacing:.06em;color:var(--primary);margin-bottom:10px;display:block;}
  .sec-head h2{max-width:22em;}
  .sec-head p{color:var(--text-2);font-size:15px;max-width:52em;margin-top:12px;}
  .sec-head.split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

  /* ---------- 对比矩阵 ---------- */
  .matrix-wrap{
    overflow-x:auto;border-radius:var(--r-card);border:1px solid var(--panel-border);
    background:var(--panel);backdrop-filter:blur(12px);box-shadow:var(--shadow-1);
  }
  table.matrix{width:100%;border-collapse:collapse;min-width:820px;}
  table.matrix th{
    background:var(--bg-2);font-size:12.5px;letter-spacing:.06em;color:var(--text-2);font-weight:600;
    text-align:left;padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.08);white-space:nowrap;
  }
  table.matrix td{
    padding:20px;border-bottom:1px solid rgba(255,255,255,.06);
    font-size:14.5px;color:var(--text-2);vertical-align:top;
  }
  table.matrix tr:last-child td{border-bottom:0;}
  table.matrix td:first-child{color:var(--text);font-weight:600;min-width:170px;}
  .tick{color:var(--primary);font-weight:700;}
  .dash{color:var(--text-3);}
  .cell-note{display:block;font-size:12.5px;color:var(--text-3);margin-top:4px;}
  .matrix-cards{display:none;gap:14px;}
  .mx-card{padding:20px;}
  .mx-card header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
  .mx-card h3{font-size:17px;}
  .mx-card dl{margin:0;display:grid;gap:10px;}
  .mx-card dl div{display:flex;justify-content:space-between;gap:16px;font-size:13.5px;border-top:1px solid rgba(255,255,255,.06);padding-top:10px;}
  .mx-card dt{color:var(--text-3);white-space:nowrap;}
  .mx-card dd{margin:0;color:var(--text-2);text-align:right;}

  /* ---------- 指标卡 ---------- */
  .metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
  .metric-card{position:relative;padding:24px;overflow:hidden;}
  .metric-card::before{
    content:"";position:absolute;top:0;left:0;right:0;height:2px;
    background:linear-gradient(90deg,var(--primary),var(--accent));opacity:.9;
  }
  .metric-num{
    font-family:var(--mono);font-size:clamp(24px,3vw,36px);line-height:1.1;
    letter-spacing:-.02em;color:var(--metric);
  }
  .metric-label{font-size:12px;letter-spacing:.06em;color:var(--text-3);margin-top:8px;display:block;}
  .metric-desc{font-size:13px;color:var(--text-2);margin-top:10px;}
  .spark{display:flex;align-items:flex-end;gap:4px;height:34px;margin-top:16px;}
  .spark i{flex:1;border-radius:3px 3px 0 0;background:linear-gradient(180deg,var(--primary),rgba(20,224,192,.12));}

  /* ---------- 结果对比 ---------- */
  .compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
  .compare-card{padding:26px;}
  .compare-card h3{font-size:18px;margin-bottom:18px;display:flex;align-items:center;gap:10px;}
  .compare-card.after{
    background:linear-gradient(160deg,rgba(20,224,192,.12),rgba(124,92,255,.08));
    border-color:rgba(20,224,192,.45);box-shadow:0 0 0 1px rgba(20,224,192,.15),var(--shadow-1);
  }
  .check-list{display:grid;gap:14px;}
  .check-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
  .check-list svg{flex:0 0 20px;margin-top:3px;color:var(--primary);}
  .compare-card.before .check-list svg{color:var(--text-3);}
  .contrast-bar{margin-top:28px;padding:24px;display:grid;gap:16px;}
  .bar-row{display:grid;grid-template-columns:120px 1fr 56px;align-items:center;gap:16px;}
  .bar-label{font-size:13px;color:var(--text-2);}
  .bar{height:10px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden;}
  .bar i{display:block;height:100%;border-radius:999px;background:rgba(159,182,180,.45);}
  .bar i.hi{background:linear-gradient(90deg,var(--primary),var(--accent));box-shadow:0 0 16px rgba(20,224,192,.5);}
  .bar-val{font-family:var(--mono);font-size:14px;color:var(--text);text-align:right;}

  /* ---------- CTA 横条 ---------- */
  .cta-strip{
    display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
    padding:28px 30px;border-radius:var(--r-card);
    background:linear-gradient(135deg,rgba(20,224,192,.14),rgba(124,92,255,.12));
    border:1px solid rgba(20,224,192,.4);box-shadow:var(--shadow-1);
  }
  .cta-strip h3{font-size:20px;}
  .cta-strip p{font-size:14px;color:var(--text-2);margin-top:8px;}

  /* ---------- 场景卡 ---------- */
  .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .scene-card{padding:26px;}
  .scene-ico{
    width:44px;height:44px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;
    background:rgba(20,224,192,.12);border:1px solid rgba(20,224,192,.34);color:var(--primary);
  }
  .scene-card h3{margin-bottom:10px;}
  .scene-card p{font-size:14px;color:var(--text-2);}
  .scene-card .meta{
    display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;
    font-family:var(--mono);font-size:12px;color:var(--text-3);
  }

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:880px;margin:0 auto;}
  .faq-item{border-bottom:1px solid rgba(255,255,255,.08);}
  .faq-item:first-child{border-top:1px solid rgba(255,255,255,.08);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:24px 0;background:none;border:0;text-align:left;font-size:16.5px;font-weight:600;
    color:var(--text);cursor:pointer;line-height:1.6;
  }
  .faq-q:hover{color:var(--primary-h);}
  .faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;transition:transform .2s;}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;}
  .faq-icon::before{top:9px;left:0;width:20px;height:2px;}
  .faq-icon::after{left:9px;top:0;width:2px;height:20px;transition:transform .2s,opacity .2s;}
  .faq-item.open .faq-icon{transform:rotate(180deg);}
  .faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
  .faq-item.open .faq-a{max-height:420px;}
  .faq-a p{padding:0 0 24px;font-size:15px;color:var(--text-2);max-width:800px;}

  /* ---------- 表单 ---------- */
  .form-grid{display:grid;grid-template-columns:1.65fr .95fr;gap:24px;align-items:start;}
  .form-card{padding:30px;}
  .form-card h2{font-size:clamp(22px,2.4vw,28px);}
  .form-card > p{color:var(--text-2);font-size:14px;margin-top:10px;}
  .fields{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px;}
  .field{display:flex;flex-direction:column;gap:8px;}
  .field.full{grid-column:1 / -1;}
  .field label{font-size:13px;color:var(--text-2);}
  .field input,.field select,.field textarea{
    width:100%;background:rgba(255,255,255,.05);border:1px solid var(--panel-border);
    border-radius:12px;padding:0 14px;height:44px;font-size:14.5px;color:var(--text);
    transition:border-color .2s,box-shadow .2s,background .2s;
  }
  .field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:118px;line-height:1.7;}
  .field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
  .field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(20,224,192,.18);background:rgba(255,255,255,.07);
  }
  .form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px;}
  .form-note{font-size:12.5px;color:var(--text-3);line-height:1.7;}
  .form-msg{font-size:13.5px;color:var(--primary);margin-top:12px;min-height:20px;}
  .form-aside{padding:26px;display:grid;gap:18px;}
  .form-aside h3{font-size:17px;}
  .aside-list{display:grid;gap:14px;}
  .aside-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
  .aside-list svg{flex:0 0 20px;margin-top:3px;color:var(--primary);}
  .privacy{font-size:12.5px;color:var(--text-3);border-top:1px solid rgba(255,255,255,.08);padding-top:16px;line-height:1.7;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--bg-2);border-top:1px solid rgba(255,255,255,.08);padding:56px 0 28px;margin-top:0;}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
  .foot-col{display:flex;flex-direction:column;gap:10px;}
  .foot-col h4{color:var(--text);font-size:14px;letter-spacing:.02em;}
  .foot-col p,.foot-col a{font-size:13.5px;color:var(--text-2);line-height:1.75;}
  .foot-col a{transition:color .2s,padding-left .2s;}
  .foot-col a:hover{color:var(--primary);padding-left:4px;}
  .foot-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
    font-size:12.5px;color:var(--text-3);
  }

  /* ---------- 响应式 ---------- */
  @media (min-width:1440px){
    .sidebar{width:264px;}
    .main{margin-left:264px;}
  }
  @media (max-width:1279px){
    .container{padding:0 24px;}
  }
  @media (max-width:1023px){
    .sidebar{display:none;}
    .main{margin-left:0;}
    .topbar{
      display:flex;align-items:center;justify-content:space-between;gap:12px;
      height:60px;padding:0 18px;position:sticky;top:0;z-index:60;
      background:rgba(11,29,37,.94);backdrop-filter:blur(12px);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .hero{padding-top:40px;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .metrics-grid{grid-template-columns:repeat(2,1fr);}
    .scene-grid{grid-template-columns:1fr 1fr;}
    .form-grid{grid-template-columns:1fr;}
    .foot-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:899px){
    .matrix-wrap{display:none;}
    .matrix-cards{display:grid;}
  }
  @media (max-width:767px){
    .container{padding:0 18px;}
    html body{font-size:15.5px;}
    .compare-grid{grid-template-columns:1fr;}
    .scene-grid{grid-template-columns:1fr;}
    .fields{grid-template-columns:1fr;}
    .bar-row{grid-template-columns:96px 1fr 48px;gap:10px;}
    .cta-strip{flex-direction:column;align-items:flex-start;}
    .cta-strip .btn{width:100%;}
  }
  @media (max-width:520px){
    .metrics-grid{grid-template-columns:1fr;}
    .foot-grid{grid-template-columns:1fr;}
    .actions .btn{width:100%;}
    .actions{flex-direction:column;align-items:stretch;}
  }

/* roulang page: category4 */
:root{
  --bg:#07141A;
  --bg-2:#0B1D25;
  --panel:rgba(255,255,255,.055);
  --panel-border:rgba(120,255,230,.14);
  --primary:#14E0C0;
  --primary-hover:#4BF0D6;
  --primary-active:#0BB79C;
  --accent:#7C5CFF;
  --metric:#FFC24B;
  --text:#E6F4F2;
  --text-2:#9FB6B4;
  --text-3:#5E7472;
  --ok:#34D399;
  --warn:#FF8A5B;
  --line:rgba(255,255,255,.08);
  --radius:18px;
  --radius-sm:12px;
  --shadow-1:0 2px 12px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:14px}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-family:var(--mono);letter-spacing:-.02em;margin-right:2px}
::selection{background:rgba(20,224,192,.3)}

/* ---------- 布局骨架 ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 18px}
.main-wrap{margin-left:0;min-width:0}
.section{padding:clamp(64px,8vw,112px) 0}
.section-head{max-width:760px;margin-bottom:32px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--primary);text-transform:uppercase;margin-bottom:12px}
.h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700}
.h3{font-size:20px;line-height:1.4;font-weight:600}
.lead{color:var(--text-2);font-size:15px;margin-top:14px;max-width:660px}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(20,224,192,.35),transparent)}

/* ---------- 左侧导航 ---------- */
.side-nav{
  display:none;
  position:fixed;left:0;top:0;bottom:0;width:240px;
  background:var(--bg-2);
  border-right:1px solid var(--line);
  padding:22px 16px;
  z-index:60;
  flex-direction:column;
  overflow-y:auto;
}
.side-nav::-webkit-scrollbar{width:6px}
.side-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:999px}
.brand{display:flex;align-items:center;gap:10px;padding:4px 6px}
.brand-logo{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 0 1px rgba(255,255,255,.16),0 8px 24px rgba(20,224,192,.35);
}
.brand-name{font-size:15px;font-weight:700;line-height:1.3;color:var(--text)}
.side-links{display:flex;flex-direction:column;gap:4px;margin-top:26px}
.nav-link{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:12px;
  font-size:14px;color:var(--text-2);
  border-left:3px solid transparent;
  transition:background .2s,color .2s,border-color .2s,transform .2s;
}
.nav-link svg{flex:0 0 18px;opacity:.85}
.nav-link:hover{background:rgba(255,255,255,.045);color:var(--text)}
.nav-link.active{background:var(--panel);border-left-color:var(--primary);color:var(--text)}
.side-foot{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:12px}
.status-card{
  background:var(--panel);border:1px solid var(--panel-border);
  border-radius:14px;padding:12px 14px;font-size:12.5px;color:var(--text-2);line-height:1.6;
  backdrop-filter:blur(12px);
}
.status-card .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px rgba(52,211,153,.7);margin-right:6px}
.side-note{font-size:12px;color:var(--text-3);text-align:center}

/* ---------- 顶部条 / 抽屉 ---------- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 18px;
  background:rgba(11,29,37,.92);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:70;
  backdrop-filter:blur(12px);
}
.topbar .brand{padding:0}
.burger{display:flex;flex-direction:column;gap:5px;padding:10px;border-radius:10px;border:1px solid var(--panel-border);background:var(--panel)}
.burger span{display:block;width:18px;height:1.5px;background:var(--text);border-radius:2px;transition:.25s}
.burger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.drawer{
  position:fixed;left:0;right:0;top:60px;bottom:0;
  background:rgba(7,20,26,.96);
  backdrop-filter:blur(14px);
  padding:16px 18px 28px;
  overflow-y:auto;z-index:65;
  opacity:0;transform:translateY(-8px);pointer-events:none;
  transition:opacity .25s,transform .25s;
}
.drawer.open{opacity:1;transform:none;pointer-events:auto}
.drawer .nav-link{min-height:48px;font-size:15px;border-left:none;border-radius:12px}
.drawer .nav-link.active{background:var(--panel);box-shadow:inset 3px 0 0 var(--primary)}
.drawer-foot{margin-top:18px;display:flex;flex-direction:column;gap:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;border-radius:12px;
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#0BB79C);
  color:#04211C;
  box-shadow:0 8px 28px rgba(20,224,192,.28),inset 0 0 0 1px rgba(255,255,255,.18);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 34px rgba(20,224,192,.4),inset 0 0 0 1px rgba(255,255,255,.24)}
.btn-primary:active{transform:translateY(1px);background:linear-gradient(135deg,var(--primary-active),#089B85)}
.btn-ghost{background:var(--panel);border-color:var(--panel-border);color:var(--text)}
.btn-ghost:hover{border-color:rgba(20,224,192,.4);transform:translateY(-1px)}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);text-decoration:underline;text-underline-offset:4px;transition:gap .2s,color .2s}
.link-arrow:hover{gap:10px;color:var(--primary-hover)}

/* ---------- 标签 / 胶囊 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.06em;color:var(--primary);
  background:rgba(20,224,192,.12);border:1px solid rgba(20,224,192,.4);
  padding:6px 12px;border-radius:999px;
}
.tag{
  display:inline-block;font-size:12px;color:var(--text-2);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  padding:4px 10px;border-radius:999px;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;color:var(--text-3);overflow-x:auto;white-space:nowrap;padding-bottom:4px;margin-bottom:18px}
.crumbs a:hover{color:var(--primary)}
.crumbs .cur{color:var(--primary)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:clamp(40px,5vw,64px) 0 clamp(48px,6vw,72px)}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;pointer-events:none;z-index:0}
.hero::before{width:520px;height:520px;left:-160px;top:-180px;background:radial-gradient(circle,rgba(20,224,192,.16),transparent 68%)}
.hero::after{width:440px;height:440px;right:-120px;bottom:-220px;background:radial-gradient(circle,rgba(124,92,255,.14),transparent 70%)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
.hero-title{font-size:clamp(30px,4.6vw,52px);line-height:1.18;font-weight:700;margin:18px 0 0}
.hero-sub{color:var(--text-2);font-size:17px;margin-top:16px;max-width:560px}
.hero-points{display:flex;flex-direction:column;gap:10px;margin-top:24px}
.hero-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2)}
.hero-points i{color:var(--primary);margin-top:6px;font-size:12px}
.hero-media{position:relative}
.hero-media img{width:100%;height:280px;object-fit:cover;border:1px solid var(--panel-border);border-radius:18px;background:var(--bg-2)}
.hero-media::after{content:"";position:absolute;inset:auto 0 0 0;height:45%;border-radius:0 0 18px 18px;background:linear-gradient(to top,rgba(7,20,26,.85),transparent)}
.glass-float{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:rgba(11,29,37,.72);border:1px solid var(--panel-border);
  border-radius:14px;padding:10px 14px;font-size:13px;color:var(--text-2);
  backdrop-filter:blur(12px);box-shadow:var(--shadow-1);
}
.glass-float .v{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--metric);margin-right:4px}

/* ---------- 指标带 ---------- */
.metric-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(11,29,37,.55)}
.metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;padding:clamp(32px,4vw,48px) 0}
.metric-card{
  position:relative;background:var(--panel);border:1px solid var(--panel-border);
  border-radius:var(--radius);padding:20px;overflow:hidden;backdrop-filter:blur(12px);
  transition:transform .2s,box-shadow .2s;
}
.metric-card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:.8}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.metric-value{font-family:var(--mono);font-size:clamp(24px,3vw,36px);font-weight:700;color:var(--primary);letter-spacing:-.02em;line-height:1.2}
.metric-label{font-size:13px;color:var(--text);margin-top:6px}
.metric-desc{font-size:12.5px;color:var(--text-3);line-height:1.6;margin-top:2px}
.spark{display:flex;align-items:flex-end;gap:3px;height:26px;margin-top:14px}
.spark span{flex:1;background:linear-gradient(to top,rgba(20,224,192,.2),rgba(20,224,192,.6));border-radius:2px}

/* ---------- 筛选条 ---------- */
.filter-bar{
  display:flex;flex-direction:column;gap:14px;
  background:var(--panel);border:1px solid var(--panel-border);
  border-radius:var(--radius);padding:18px;backdrop-filter:blur(12px);
  margin-bottom:28px;
}
.filter-input{position:relative;display:flex;align-items:center}
.filter-input i{position:absolute;left:14px;color:var(--text-3);font-size:14px}
.filter-input input{
  width:100%;height:44px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  padding:0 14px 0 40px;font-size:14px;color:var(--text);outline:none;
  transition:border-color .2s,box-shadow .2s;
}
.filter-input input::placeholder{color:var(--text-3)}
.filter-input input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(20,224,192,.14)}
.chip-group{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  font-size:13px;padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-2);
  transition:background .2s,color .2s,border-color .2s,transform .2s;
}
.chip:hover{color:var(--text);border-color:rgba(20,224,192,.35);transform:translateY(-1px)}
.chip.active{background:rgba(20,224,192,.14);border-color:rgba(20,224,192,.55);color:var(--primary)}

/* ---------- 清单卡片 ---------- */
.res-grid{display:grid;grid-template-columns:1fr;gap:20px}
.res-card{
  display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--panel-border);
  border-radius:var(--radius);padding:24px;
  backdrop-filter:blur(12px);box-shadow:var(--shadow-1);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.res-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(20,224,192,.45)}
.res-num{font-family:var(--mono);font-size:22px;font-weight:700;color:rgba(20,224,192,.4);letter-spacing:-.02em}
.res-card .h3{margin-top:12px;font-size:19px}
.res-desc{font-size:14px;color:var(--text-2);line-height:1.8;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.res-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.res-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);margin-top:18px;transition:gap .2s}
.res-link:hover{gap:11px}
.res-card:hover .res-link{gap:11px}
.pager{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:36px;flex-wrap:wrap}
.pager a,.pager span{
  min-width:38px;height:38px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-family:var(--mono);border-radius:10px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-2);
  transition:background .2s,color .2s,border-color .2s;
}
.pager a:hover{color:var(--text);border-color:rgba(20,224,192,.4)}
.pager .on{background:rgba(20,224,192,.14);border-color:rgba(20,224,192,.55);color:var(--primary)}
.pager-note{text-align:center;font-size:12.5px;color:var(--text-3);margin-top:12px}

/* ---------- 流程 + 场景（非对称） ---------- */
.flow-wrap{display:grid;grid-template-columns:1fr;gap:28px}
.flow{position:relative;padding-left:6px}
.flow-step{position:relative;display:flex;gap:18px;padding-bottom:30px}
.flow-step:last-child{padding-bottom:0}
.flow-step::before{
  content:"";position:absolute;left:15px;top:34px;bottom:4px;width:1px;
  background:linear-gradient(to bottom,rgba(20,224,192,.5),rgba(20,224,192,.06));
}
.flow-step:last-child::before{display:none}
.flow-dot{
  position:relative;z-index:1;flex:0 0 32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--primary);
  background:var(--bg-2);border:1px solid rgba(20,224,192,.45);
  box-shadow:0 0 0 5px rgba(20,224,192,.06);
}
.flow-body h3{font-size:17px;font-weight:600}
.flow-body p{font-size:14px;color:var(--text-2);margin-top:6px;line-height:1.8}
.scene-card{
  background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius);
  padding:24px;backdrop-filter:blur(12px);box-shadow:var(--shadow-1);
}
.scene-card h3{font-size:18px;font-weight:600}
.scene-list{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.scene-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.75}
.scene-list i{color:var(--primary);font-size:12px;margin-top:7px}
.scene-card img{height:150px;width:100%;object-fit:cover;border:1px solid var(--line);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:24px 0;text-align:left;font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .2s;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex:0 0 26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--panel-border);color:var(--primary);
  font-size:14px;transition:transform .25s,background .25s;
}
.faq-item.open .faq-icon{transform:rotate(180deg);background:rgba(20,224,192,.14)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 0 24px;font-size:15px;color:var(--text-2);line-height:1.8;max-width:760px}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(20,224,192,.12),rgba(124,92,255,.1));
  border:1px solid var(--panel-border);border-radius:22px;
  padding:clamp(28px,4vw,48px);
  box-shadow:var(--shadow-1);
}
.cta-card::before{content:"";position:absolute;width:420px;height:420px;right:-140px;top:-200px;border-radius:50%;background:radial-gradient(circle,rgba(20,224,192,.2),transparent 70%)}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
.cta-card h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3}
.cta-card p{color:var(--text-2);font-size:15px;margin-top:12px;max-width:520px}
.cta-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding:clamp(40px,5vw,64px) 0 24px;margin-top:clamp(40px,5vw,72px)}
.foot-grid{display:grid;grid-template-columns:1fr;gap:28px}
.foot-col h4{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--text)}
.foot-col p{font-size:13.5px;color:var(--text-2);line-height:1.8;margin-bottom:8px}
.foot-col a{display:block;font-size:13.5px;color:var(--text-2);padding:6px 0;transition:color .2s,transform .2s}
.foot-col a:hover{color:var(--primary);transform:translateX(2px)}
.foot-bottom{
  margin-top:32px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:8px;
  font-size:12.5px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .container{padding:0 24px}
  .metric-grid{grid-template-columns:repeat(4,1fr)}
  .res-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:repeat(2,1fr)}
  .filter-bar{flex-direction:row;align-items:center;justify-content:space-between}
  .filter-input{width:320px;flex:0 0 320px}
  .foot-bottom{flex-direction:row;justify-content:space-between;align-items:center}
}
@media (min-width:900px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:44px}
  .hero-media img{height:340px}
  .flow-wrap{grid-template-columns:7fr 5fr;gap:40px;align-items:start}
  .cta-inner{grid-template-columns:1.4fr 1fr}
}
@media (min-width:1024px){
  .side-nav{display:flex}
  .topbar{display:none}
  .drawer{display:none}
  .main-wrap{margin-left:240px}
  .container{padding:0 32px}
  .res-grid{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:repeat(4,1fr)}
  .hero-points{flex-direction:row;flex-wrap:wrap;gap:20px}
  .hero-points li{max-width:220px}
}
@media (min-width:1440px){
  .side-nav{width:264px}
  .main-wrap{margin-left:264px}
}
@media (max-width:639px){
  .btn{width:100%}
  .btn-row{flex-direction:column}
  .hero-media img{height:220px}
}