/* roulang page: index */
:root{
  --bg-base:#070C14;
  --bg-deep:#0A1018;
  --panel:rgba(255,255,255,0.045);
  --panel-border:rgba(47,224,194,0.16);
  --brand:#2FE0C2;
  --brand-deep:#14A98F;
  --brand-glow:rgba(47,224,194,0.45);
  --accent:#FFB454;
  --link:#4DA6FF;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#63758C;
  --line:rgba(255,255,255,0.08);
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --shadow-card:0 10px 30px -18px rgba(0,0,0,0.8);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  background-color:var(--bg-base);
  background-image:
    radial-gradient(920px 540px at 90% -8%, rgba(47,224,194,0.14), transparent 70%),
    radial-gradient(780px 480px at 4% 56%, rgba(47,224,194,0.10), transparent 72%),
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(165deg,#070C14 0%,#0A1018 58%,#070C14 100%);
  background-size:auto,auto,32px 32px,32px 32px,auto;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:ui-monospace,'JetBrains Mono',Menlo,Consolas,monospace;}
:focus-visible{outline:2px solid var(--link);outline-offset:2px;border-radius:6px;}

.container-x{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.section{padding:96px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.04em;font-weight:500;
  color:var(--brand);border:1px solid var(--panel-border);border-radius:999px;
  padding:4px 12px;background:rgba(47,224,194,0.06);margin-bottom:16px;
}
.h2{font-size:clamp(24px,2.7vw,36px);}
.h3{font-size:20px;line-height:1.4;font-weight:600;}
.lead{color:var(--text-2);font-size:16px;line-height:1.85;margin-top:14px;}
.muted{color:var(--text-2);font-size:14px;line-height:1.75;}
.tiny{color:var(--text-3);font-size:13px;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(7,12,20,0.72);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,12,20,0.86);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(150deg,rgba(47,224,194,0.22),rgba(20,169,143,0.10));
  border:1px solid var(--panel-border);display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:12px;}
.nav-links a{
  position:relative;font-size:14px;color:var(--text-2);padding:6px 2px;white-space:nowrap;
  transition:color .2s ease;
}
.nav-links a:hover{color:var(--text);}
.nav-links a.active{color:var(--text);font-weight:600;}
.nav-links a.active::after{
  content:'';position:absolute;left:12%;right:12%;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px var(--brand-glow);
}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:240px;height:38px;padding:0 12px;
  border-radius:10px;background:var(--panel);border:1px solid var(--line);
  transition:width .25s ease,border-color .2s ease,box-shadow .2s ease;
}
.cmd-search:focus-within{width:300px;border-color:rgba(47,224,194,0.55);box-shadow:0 0 0 3px rgba(47,224,194,0.10);}
.cmd-search input{
  background:transparent;border:0;outline:none;color:var(--text);font-size:13px;width:100%;
}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-search kbd{
  font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:5px;padding:1px 5px;
}
.icon-link{
  font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:10px;
  padding:8px 12px;white-space:nowrap;transition:color .2s,border-color .2s;
}
.icon-link:hover{color:var(--brand);border-color:rgba(47,224,194,0.4);}
.menu-btn{
  display:none;width:40px;height:38px;border-radius:10px;background:var(--panel);
  border:1px solid var(--line);flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.menu-btn span{display:block;width:16px;height:1.6px;background:var(--text);border-radius:2px;}

.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:14px;font-weight:600;
  color:#04211C;background:linear-gradient(160deg,#3BE8CB,#14A98F);
  box-shadow:0 0 0 1px rgba(47,224,194,0.5),0 10px 34px -12px var(--brand-glow);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),filter .2s,box-shadow .2s;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,224,194,0.6),0 16px 40px -12px var(--brand-glow);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(47,224,194,0.55),0 6px 18px -10px var(--brand-glow);}
.btn-sm{padding:9px 16px;font-size:13px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:14px;font-weight:600;
  color:var(--text);border:1px solid var(--line);background:rgba(255,255,255,0.02);
  transition:border-color .2s,color .2s,transform .2s;
}
.btn-ghost:hover{border-color:rgba(47,224,194,0.45);color:var(--brand);transform:translateY(-1px);}
.text-link{color:var(--link);font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:6px;}
.text-link:hover{color:var(--brand);}

.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;letter-spacing:.04em;
  color:var(--accent);border:1px solid rgba(255,180,84,0.32);border-radius:999px;
  padding:3px 10px;background:rgba(255,180,84,0.08);
}
.badge-teal{color:var(--brand);border-color:var(--panel-border);background:rgba(47,224,194,0.08);}

.glass-card{
  background:var(--panel);
  border:1px solid var(--panel-border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.10);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.card{
  background:linear-gradient(180deg,rgba(255,255,255,0.05),rgba(255,255,255,0.02));
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s,box-shadow .24s;
}
.card:hover{transform:translateY(-3px);border-color:rgba(47,224,194,0.4);box-shadow:0 18px 40px -22px rgba(0,0,0,0.9);}
.card-media{position:relative;overflow:hidden;border-radius:12px;aspect-ratio:16/10;background:#0C1420;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s cubic-bezier(.2,.7,.3,1);}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0.05) 30%,rgba(7,12,20,0.72) 100%);
}

/* Hero */
.hero{
  position:relative;overflow:hidden;padding:88px 0 76px;
  background-image:linear-gradient(rgba(7,12,20,0.78),rgba(7,12,20,0.86)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:160px;
  background:linear-gradient(180deg,transparent,rgba(7,12,20,0.95));
  pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.hero h1{font-size:clamp(32px,4.4vw,54px);line-height:1.14;font-weight:700;margin:18px 0 16px;letter-spacing:.01em;}
.hero-sub{font-size:17px;color:var(--text-2);max-width:32em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);margin-top:44px;
  border-top:1px solid var(--line);padding-top:26px;
}
.stat{padding-right:18px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat-num{display:block;font-size:clamp(26px,3vw,38px);font-weight:700;color:var(--accent);line-height:1.1;}
.stat-label{display:block;font-size:12px;color:var(--text-3);margin-top:8px;letter-spacing:.02em;}
.hero-card{padding:28px;border-radius:var(--radius-lg);}
.hero-card h3{font-size:16px;margin-bottom:6px;}
.hero-list{margin-top:18px;display:grid;gap:14px;}
.hero-list li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--text-2);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:10px;flex-shrink:0;box-shadow:0 0 10px var(--brand-glow);}

/* 能力 2+1 */
.cap-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;}
.cap-stack{display:grid;gap:24px;}
.cap-card{padding:24px;}
.cap-card h3{margin:18px 0 10px;font-size:20px;font-weight:600;}
.cap-card p{color:var(--text-2);font-size:14px;line-height:1.75;}
.cap-icon{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,224,194,0.10);border:1px solid var(--panel-border);color:var(--brand);
}

/* 数据带 */
.data-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:34px 0;
}
.data-cell{padding:0 24px;border-right:1px solid var(--line);}
.data-cell:last-child{border-right:0;}
.data-num{font-size:clamp(28px,3vw,44px);font-weight:700;color:var(--accent);line-height:1.05;}
.data-title{font-size:14px;margin-top:10px;color:var(--text);}
.data-desc{font-size:13px;color:var(--text-3);margin-top:6px;line-height:1.7;}

/* 证据卡 2×2 交错 */
.evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.evidence-card{padding:22px;display:flex;flex-direction:column;gap:16px;}
.evidence-card:nth-child(2){margin-top:36px;}
.evidence-card:nth-child(4){margin-top:36px;}
.evidence-quote{font-size:15px;color:var(--text);line-height:1.85;}
.evidence-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.tag{
  display:inline-flex;align-items:center;font-size:12px;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:3px 10px;background:rgba(255,255,255,0.02);
}

/* 方案区 */
.solution-grid{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start;}
.sol-tabs{display:grid;gap:10px;}
.sol-tab{
  text-align:left;width:100%;padding:14px 16px;border-radius:14px;font-size:14px;
  color:var(--text-2);background:rgba(255,255,255,0.02);border:1px solid var(--line);
  transition:all .2s ease;
}
.sol-tab:hover{color:var(--text);border-color:rgba(47,224,194,0.32);}
.sol-tab.is-active{
  color:var(--text);background:rgba(47,224,194,0.08);
  border-color:rgba(47,224,194,0.42);box-shadow:inset 3px 0 0 var(--brand);
}
.sol-panel{padding:30px;border-radius:var(--radius-lg);display:none;}
.sol-panel.is-active{display:block;}
.sol-panel h3{font-size:22px;margin-bottom:12px;}
.check-list{margin:20px 0 24px;display:grid;gap:10px;}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);}
.check-mark{color:var(--brand);flex-shrink:0;}

/* CMS 列表 */
.cms-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:start;}
.cms-feature{padding:22px;display:flex;flex-direction:column;gap:18px;}
.cms-feature h3{font-size:22px;line-height:1.35;margin:14px 0 10px;}
.cms-feature h3 a:hover{color:var(--brand);}
.cms-side{display:grid;gap:16px;}
.cms-item{
  padding:18px;border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,0.04),rgba(255,255,255,0.015));
  display:grid;gap:10px;transition:transform .22s cubic-bezier(.2,.7,.3,1),border-color .22s;
}
.cms-item:hover{transform:translateY(-3px);border-color:rgba(47,224,194,0.4);}
.cms-item h3{font-size:16px;line-height:1.5;}
.cms-item h3 a:hover{color:var(--brand);}
.cms-item p{font-size:13px;color:var(--text-2);line-height:1.7;}
.cms-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);}
.cms-meta .sep{width:3px;height:3px;border-radius:50%;background:var(--text-3);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);padding:56px 24px;
  text-align:center;background:rgba(255,255,255,0.02);
}
.empty-icon{
  width:48px;height:48px;margin:0 auto 16px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--panel-border);background:rgba(47,224,194,0.08);color:var(--brand);
}

/* FAQ */
.faq-wrap{max-width:820px;}
.faq-item{
  border:1px solid var(--line);border-radius:14px;background:var(--panel);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease;
}
.faq-item.is-open{border-color:rgba(47,224,194,0.42);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:0;color:var(--text);text-align:left;
  font-size:16px;font-weight:600;line-height:1.5;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  position:relative;width:18px;height:18px;flex-shrink:0;
}
.faq-icon::before,.faq-icon::after{
  content:'';position:absolute;background:var(--brand);border-radius:2px;transition:transform .26s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-item.is-open .faq-a{max-height:320px;}
.faq-a p{padding:0 20px 20px;color:var(--text-2);font-size:14px;line-height:1.85;border-left:2px solid var(--brand);margin-left:20px;padding-left:16px;}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start;}
.form-card{padding:30px;border-radius:var(--radius-lg);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border-radius:10px;background:rgba(255,255,255,0.03);
  border:1px solid var(--line);color:var(--text);font-size:14px;font-family:inherit;outline:none;
  transition:border-color .2s,box-shadow .2s;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:rgba(47,224,194,0.6);box-shadow:0 0 0 3px rgba(47,224,194,0.12);
}
.info-card{padding:26px;border-radius:var(--radius-lg);}
.info-row{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;}
.info-row:last-child{border-bottom:0;}
.info-row span:first-child{color:var(--text-3);}
.form-status{font-size:13px;color:var(--brand);margin-top:12px;display:none;}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);margin-top:20px;padding-top:56px;background:rgba(10,16,24,0.6);}
.footer-top{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 28px;border-radius:var(--radius-lg);margin-bottom:48px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px;}
.footer-grid h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-grid li{margin-bottom:10px;}
.footer-grid li a{font-size:13px;color:var(--text-2);transition:color .2s;}
.footer-grid li a:hover{color:var(--brand);}
.footer-desc{font-size:13px;color:var(--text-2);line-height:1.8;margin-top:14px;max-width:30em;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 24px 34px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px;color:var(--text-3);
}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,14,0.62);backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity .25s;z-index:60;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:340px;z-index:70;
  background:var(--bg-deep);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .3s cubic-bezier(.2,.7,.3,1);
  padding:22px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer nav{display:grid;gap:6px;margin:22px 0;}
.drawer nav a{
  padding:12px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;transition:all .2s;
}
.drawer nav a:hover,.drawer nav a.active{color:var(--text);background:rgba(47,224,194,0.08);border-color:var(--panel-border);}
.drawer-close{
  margin-left:auto;display:block;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);background:transparent;color:var(--text-2);font-size:18px;
}

@media (max-width:1023px){
  .nav-links,.cmd-search,.icon-link{display:none;}
  .menu-btn{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .cap-grid{grid-template-columns:1fr;}
  .solution-grid{grid-template-columns:1fr;}
  .sol-tabs{grid-auto-flow:column;grid-auto-columns:max-content;overflow-x:auto;padding-bottom:6px;}
  .sol-tab{white-space:nowrap;}
  .cms-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding:72px 0;}
}
@media (max-width:767px){
  .container-x{padding-left:20px;padding-right:20px;}
  .hero{padding:64px 0 56px;}
  .stat-band{grid-template-columns:1fr 1fr;gap:22px 0;}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){padding-bottom:18px;border-bottom:1px solid var(--line);}
  .data-band{grid-template-columns:1fr;padding:8px 0;}
  .data-cell{border-right:0;border-bottom:1px solid var(--line);padding:20px 0;}
  .data-cell:last-child{border-bottom:0;}
  .evidence-grid{grid-template-columns:1fr;}
  .evidence-card:nth-child(2),.evidence-card:nth-child(4){margin-top:0;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .form-card,.info-card,.sol-panel{padding:22px;}
}

/* roulang page: article */
:root{
  --bg-base:#070C14;
  --bg-deep:#0A1018;
  --panel:rgba(255,255,255,0.045);
  --panel-border:rgba(47,224,194,0.16);
  --brand:#2FE0C2;
  --brand-deep:#14A98F;
  --brand-glow:rgba(47,224,194,0.45);
  --accent:#FFB454;
  --link:#4DA6FF;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#63758C;
  --line:rgba(255,255,255,0.08);
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --shadow-card:0 10px 30px -18px rgba(0,0,0,0.8);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background-color:var(--bg-base);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(760px 480px at 88% -6%, rgba(47,224,194,0.16), transparent 62%),
    radial-gradient(680px 520px at -8% 34%, rgba(47,224,194,0.10), transparent 66%),
    radial-gradient(640px 420px at 62% 108%, rgba(77,166,255,0.08), transparent 68%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:0.03;
  background-image:linear-gradient(rgba(255,255,255,0.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.6) 1px,transparent 1px);
  background-size:32px 32px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .24s cubic-bezier(.2,.7,.3,1);}
a:hover{color:var(--brand);}
button,input{font:inherit;color:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--link);outline-offset:2px;border-radius:6px;}
.mono{font-family:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:2;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:64px;
  display:flex;align-items:center;
  background:rgba(7,12,20,0.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,background .3s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);background:rgba(7,12,20,0.9);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:64px;}
.brand{display:flex;align-items:center;gap:9px;white-space:nowrap;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(47,224,194,0.22),rgba(47,224,194,0.05));
  border:1px solid var(--panel-border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10);
}
.brand-text{font-size:15px;font-weight:700;letter-spacing:0.01em;}
.nav-links{display:flex;align-items:center;gap:22px;font-size:14px;color:var(--text-2);}
.nav-links a{position:relative;padding:6px 0;}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;width:60%;
  background:var(--brand);border-radius:2px;opacity:0;transform:scaleX(.4);
  transition:opacity .24s ease,transform .24s ease;
}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after,.nav-links a.active::after{opacity:1;transform:scaleX(1);}
.nav-links a.active{color:var(--text);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:240px;padding:7px 10px;
  background:var(--panel);border:1px solid var(--line);border-radius:10px;
  transition:width .28s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.cmd-search:focus-within{width:300px;border-color:rgba(47,224,194,0.55);box-shadow:0 0 0 3px rgba(47,224,194,0.10);}
.cmd-search input{flex:1;background:transparent;border:0;outline:none;font-size:13px;color:var(--text);}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-search kbd{
  font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:5px;padding:1px 5px;background:rgba(255,255,255,0.03);
}
.icon-link{font-size:13px;color:var(--text-2);padding:6px 2px;}
.icon-link:hover{color:var(--brand);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:0;cursor:pointer;
  font-size:14px;font-weight:700;color:#04140F;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(47,224,194,0.5),0 10px 34px -12px var(--brand-glow);
  transition:transform .2s ease,filter .2s ease,box-shadow .2s ease;
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);color:#04140F;}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(47,224,194,0.6),0 4px 14px -8px var(--brand-glow);}
.btn-sm{padding:9px 16px;font-size:13px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  background:rgba(255,255,255,0.03);border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--text);cursor:pointer;
  transition:border-color .24s ease,background .24s ease,transform .2s ease;
}
.btn-ghost:hover{border-color:rgba(47,224,194,0.45);background:rgba(47,224,194,0.06);color:var(--text);transform:translateY(-1px);}
.menu-btn{
  display:none;width:38px;height:34px;border-radius:10px;
  background:var(--panel);border:1px solid var(--line);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.menu-btn span{display:block;width:16px;height:1.6px;background:var(--text-2);border-radius:2px;transition:.24s ease;}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(5.6px) rotate(45deg);}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg);}
.nav-drawer{
  position:fixed;top:64px;right:0;width:min(320px,86vw);height:calc(100vh - 64px);
  background:rgba(10,16,24,0.97);border-left:1px solid var(--line);
  padding:22px;display:none;flex-direction:column;gap:16px;z-index:59;
  backdrop-filter:blur(16px);
}
.nav-drawer.open{display:flex;}
.nav-drawer a{font-size:15px;color:var(--text-2);padding:10px 2px;border-bottom:1px solid var(--line);}
.nav-drawer a:hover{color:var(--brand);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:52px 0 40px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(7,12,20,0.74),rgba(7,12,20,0.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:0.9;z-index:0;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:120px;
  background:linear-gradient(180deg,transparent,var(--bg-base));z-index:1;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);position:relative;z-index:2;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--text-3);opacity:.7;}
.breadcrumb .crumb-cur{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:500;letter-spacing:0.04em;
  color:var(--accent);border:1px solid rgba(255,180,84,0.45);
  background:rgba(255,180,84,0.08);
}
.post-head{margin-top:22px;position:relative;z-index:2;}
.post-head h1{
  font-size:clamp(28px,3.6vw,44px);line-height:1.2;font-weight:700;
  margin:16px 0 0;max-width:900px;letter-spacing:0.01em;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:18px;font-size:13px;color:var(--text-2);
}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);}
.post-meta .mono{color:var(--accent);font-size:13px;}

/* ---------- layout ---------- */
.page-body{padding:56px 0 96px;position:relative;z-index:2;}
.layout-grid{display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:48px;align-items:start;}
.article-shell{position:relative;padding-left:26px;}
.article-shell::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(47,224,194,0));
}
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:var(--text-2);}
.article-body>*:first-child{margin-top:0;}
.article-body h2{
  font-size:clamp(22px,2.3vw,28px);line-height:1.3;font-weight:700;
  color:var(--text);margin:2.4em 0 .8em;padding-bottom:10px;
  border-bottom:1px solid var(--line);
}
.article-body h3{font-size:19px;line-height:1.4;font-weight:600;color:var(--text);margin:1.9em 0 .6em;}
.article-body h4{font-size:16px;font-weight:600;color:var(--text);margin:1.6em 0 .5em;}
.article-body p{margin:0 0 1.2em;}
.article-body a{color:var(--link);border-bottom:1px solid rgba(77,166,255,0.35);}
.article-body a:hover{color:var(--brand);border-bottom-color:rgba(47,224,194,0.5);}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.3em;}
.article-body li{margin-bottom:.55em;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-family:ui-monospace,Menlo,monospace;}
.article-body strong{color:var(--text);font-weight:600;}
.article-body blockquote{
  margin:1.8em 0;padding:16px 20px;
  border-left:2px solid var(--brand);
  background:rgba(47,224,194,0.05);
  border-radius:0 12px 12px 0;color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:1.6em 0 .6em;width:100%;height:auto;}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:.2em;}
.article-body code{
  font-family:ui-monospace,Menlo,monospace;font-size:14px;
  background:rgba(255,255,255,0.06);border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;color:var(--brand);
}
.article-body pre{
  background:var(--bg-deep);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;margin:1.6em 0;
}
.article-body pre code{background:none;border:0;padding:0;color:var(--text-2);font-size:13.5px;line-height:1.7;}
.article-body table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:14.5px;}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body thead th{color:var(--text);font-weight:600;background:rgba(255,255,255,0.03);}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,0.02);}
.article-body td .mono,.article-body th .mono{color:var(--accent);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

/* ---------- post tail ---------- */
.post-tail{margin-top:40px;padding-top:24px;border-top:1px solid var(--line);max-width:760px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;font-size:12px;
  color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,0.03);
  transition:border-color .24s ease,color .24s ease;
}
.tag:hover{border-color:rgba(47,224,194,0.45);color:var(--brand);}
.tail-links{display:flex;flex-wrap:wrap;gap:22px;margin-top:18px;font-size:14px;}
.tail-links a{color:var(--link);}
.tail-links a:hover{color:var(--brand);}

/* ---------- sidebar ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px;}
.glass-card{
  background:var(--panel);
  border:1px solid var(--panel-border);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.10);
  padding:22px;
}
.side-title{font-size:15px;font-weight:700;color:var(--text);margin:0 0 14px;display:flex;align-items:center;gap:8px;}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand);}
.side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px;}
.side-list a{font-size:14px;color:var(--text-2);line-height:1.6;display:block;}
.side-list a:hover{color:var(--brand);}
.side-list .mini{font-size:12px;color:var(--text-3);margin-top:3px;display:block;}
.side-info{font-size:13.5px;color:var(--text-2);line-height:1.85;margin:0;}
.side-info + .side-info{margin-top:10px;}
.side-cta{margin-top:16px;width:100%;}

/* ---------- empty ---------- */
.empty-state{
  max-width:760px;padding:56px 28px;text-align:center;
  background:var(--panel);border:1px solid var(--panel-border);
  border-radius:var(--r-lg);box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.10);
}
.empty-state .empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,224,194,0.10);border:1px solid var(--panel-border);
}
.empty-title{font-size:20px;font-weight:700;color:var(--text);margin:0 0 8px;}
.empty-tip{font-size:14px;color:var(--text-2);margin:0 0 22px;}

/* ---------- sections ---------- */
.section{padding:0 0 96px;position:relative;z-index:2;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,2.7vw,34px);line-height:1.25;font-weight:700;margin:0 0 12px;}
.section-head p{color:var(--text-2);font-size:15px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:0.04em;
  color:var(--brand);border:1px solid var(--panel-border);background:rgba(47,224,194,0.07);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease;
}
.post-card:hover{transform:translateY(-3px);border-color:rgba(47,224,194,0.4);}
.post-card .cover{position:relative;aspect-ratio:16/10;overflow:hidden;}
.post-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .24s cubic-bezier(.2,.7,.3,1);}
.post-card:hover .cover img{transform:scale(1.04);}
.post-card .cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0.15),rgba(7,12,20,0.85));
}
.post-card .chip{
  position:absolute;left:14px;bottom:14px;z-index:2;
  font-size:12px;letter-spacing:0.04em;color:var(--accent);
  border:1px solid rgba(255,180,84,0.45);background:rgba(7,12,20,0.72);
  border-radius:999px;padding:4px 11px;
}
.post-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card h3{font-size:17px;line-height:1.5;font-weight:600;margin:0;color:var(--text);}
.post-card p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0;}
.post-card .foot{
  margin-top:auto;display:flex;align-items:center;gap:10px;
  font-size:12.5px;color:var(--text-3);
}
.post-card .foot .arrow{margin-left:auto;color:var(--brand);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;transition:border-color .24s ease;
}
.faq-item[open]{border-color:rgba(47,224,194,0.35);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:16px 20px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";margin-left:auto;color:var(--brand);font-size:20px;line-height:1;
  transition:transform .24s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 20px 18px 20px;font-size:14.5px;line-height:1.85;color:var(--text-2);border-left:2px solid var(--brand);margin-left:20px;padding-left:16px;}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;gap:24px;justify-content:space-between;
  padding:32px 34px;border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(47,224,194,0.10),rgba(255,255,255,0.03));
  border:1px solid var(--panel-border);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.10);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin:0 0 8px;}
.cta-band p{margin:0;color:var(--text-2);font-size:14.5px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{position:relative;z-index:2;border-top:1px solid var(--line);background:rgba(10,16,24,0.6);padding-top:8px;}
.footer-top{
  display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between;
  margin-top:24px;padding:24px 26px;
}
.footer-desc{margin:12px 0 0;font-size:13.5px;line-height:1.8;color:var(--text-2);max-width:520px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;
  padding:48px 0 32px;
}
.footer-grid h4{font-size:14px;font-weight:700;color:var(--text);margin:0 0 14px;}
.footer-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-grid a{font-size:13.5px;color:var(--text-2);}
.footer-grid a:hover{color:var(--brand);}
.tiny{font-size:13px;color:var(--text-2);line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 24px 34px;font-size:12.5px;color:var(--text-3);
  border-top:1px solid var(--line);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links,.cmd-search{display:none;}
  .menu-btn{display:flex;}
  .layout-grid{grid-template-columns:minmax(0,1fr);gap:40px;}
  .side-col{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .page-body{padding:44px 0 72px;}
  .section{padding-bottom:72px;}
}
@media (max-width:768px){
  .container-x{padding:0 20px;}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:16px;}
  .article-shell{padding-left:0;}
  .article-shell::before{display:none;}
  .post-head h1{font-size:clamp(24px,6.4vw,32px);}
  .breadcrumb .crumb-cur{white-space:normal;}
  .cta-band{padding:26px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:36px 0 24px;}
  .footer-top{padding:20px;margin-top:18px;}
  .page-hero{padding:36px 0 30px;}
  .glass-card{padding:20px;}
}
@media (max-width:520px){
  .btn-primary,.btn-ghost{padding:11px 18px;font-size:13.5px;width:100%;}
  .cta-actions{width:100%;}
  .nav-right .btn-primary.btn-sm{display:none;}
  .post-meta{gap:9px;font-size:12.5px;}
}

/* roulang page: category1 */
:root{
  --bg-base:#070C14;
  --bg-deep:#0A1018;
  --panel:rgba(255,255,255,0.045);
  --panel-border:rgba(47,224,194,0.16);
  --brand:#2FE0C2;
  --brand-deep:#14A98F;
  --brand-glow:rgba(47,224,194,0.45);
  --accent:#FFB454;
  --link:#4DA6FF;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#63758C;
  --line:rgba(255,255,255,0.08);
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(720px 440px at 88% 2%, rgba(47,224,194,0.15), transparent 70%),
    radial-gradient(640px 460px at 4% 58%, rgba(47,224,194,0.10), transparent 72%),
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size:auto, auto, 32px 32px, 32px 32px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--link);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(47,224,194,0.28);color:#fff;}

.container-x{max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,20,0.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 12px 34px -22px rgba(0,0,0,0.95);background:rgba(7,12,20,0.9);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;display:grid;place-items:center;border-radius:10px;
  background:linear-gradient(160deg,rgba(47,224,194,0.22),rgba(47,224,194,0.04));
  border:1px solid var(--panel-border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10);
}
.brand-text{font-size:16px;font-weight:700;white-space:nowrap;color:var(--text);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px;}
.nav-links a{
  position:relative;display:block;padding:8px 11px;border-radius:10px;
  font-size:13.5px;color:var(--text-2);white-space:nowrap;
  transition:color .2s ease,background-color .2s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,0.045);}
.nav-links a.active{color:var(--text);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px var(--brand-glow);
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:200px;height:38px;padding:0 10px;
  border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,0.035);
  transition:width .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.cmd-search:focus-within{
  width:250px;border-color:rgba(47,224,194,0.55);box-shadow:0 0 0 1px rgba(47,224,194,0.28),0 8px 26px -14px var(--brand-glow);
}
.cmd-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:var(--text);font-size:13px;
}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-search kbd{
  font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 5px;background:rgba(255,255,255,0.04);
}
.icon-link{
  font-size:13.5px;color:var(--text-2);padding:8px 10px;border-radius:10px;
  transition:color .2s ease,background-color .2s ease;white-space:nowrap;
}
.icon-link:hover{color:var(--text);background:rgba(255,255,255,0.045);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);border:0;cursor:pointer;
  font-size:14.5px;font-weight:700;color:#04211C;
  background:linear-gradient(180deg,#3BEBCE,#14A98F);
  box-shadow:0 0 0 1px rgba(47,224,194,0.5),0 10px 34px -12px var(--brand-glow);
  transition:transform .2s ease,filter .2s ease,box-shadow .2s ease;
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(47,224,194,0.65),0 14px 40px -12px var(--brand-glow);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(47,224,194,0.5),0 6px 18px -10px var(--brand-glow);}
.btn-sm{padding:9px 16px;font-size:13.5px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);cursor:pointer;
  font-size:14.5px;font-weight:600;color:var(--text);
  background:rgba(255,255,255,0.03);border:1px solid var(--panel-border);
  transition:transform .2s ease,border-color .2s ease,background-color .2s ease;
}
.btn-ghost:hover{transform:translateY(-1px);border-color:rgba(47,224,194,0.45);background:rgba(47,224,194,0.08);}
.btn-ghost:active{transform:translateY(0);}
.menu-btn{
  display:none;width:38px;height:38px;padding:0 9px;flex-direction:column;justify-content:center;gap:5px;
  background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;
  transition:border-color .2s ease;
}
.menu-btn:hover{border-color:rgba(47,224,194,0.4);}
.menu-btn span{display:block;height:1.5px;border-radius:2px;background:var(--text-2);}

/* ---------- 页面横幅 ---------- */
.page-hero{position:relative;overflow:hidden;padding:80px 0 68px;border-bottom:1px solid var(--line);}
.page-hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:0.55;
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(7,12,20,0.78) 0%,rgba(7,12,20,0.9) 52%,var(--bg-base) 100%);
}
.page-hero-inner{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.crumb a{color:var(--text-3);transition:color .2s ease;}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--text-3);}
.badge{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:0.04em;
  padding:5px 12px;border-radius:999px;color:var(--accent);
  border:1px solid rgba(255,180,84,0.4);background:rgba(255,180,84,0.08);
}
.page-hero h1{
  margin:18px 0 14px;font-size:clamp(30px,4vw,50px);line-height:1.16;font-weight:700;max-width:900px;
}
.hero-sub{font-size:clamp(15px,1.4vw,18px);color:var(--brand);font-weight:600;margin-bottom:14px;}
.hero-text{max-width:720px;font-size:15.5px;color:var(--text-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  margin-top:46px;border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--panel);backdrop-filter:blur(10px);overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10);
}
.hero-stat{padding:22px 22px;border-right:1px solid var(--line);}
.hero-stat:last-child{border-right:0;}
.hero-stat .num{
  font-family:ui-monospace,"JetBrains Mono",Menlo,monospace;
  font-size:clamp(20px,2.2vw,28px);color:var(--accent);line-height:1.2;font-weight:600;
}
.hero-stat .lbl{font-size:12.5px;color:var(--text-3);margin-top:6px;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:linear-gradient(180deg,rgba(10,16,24,0.0),rgba(10,16,24,0.75) 40%,rgba(10,16,24,0.0));}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,2.7vw,34px);line-height:1.28;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:15.5px;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:0.08em;color:var(--brand);
  margin-bottom:14px;text-transform:uppercase;
}

/* ---------- 侧栏 + 内容流 ---------- */
.layout-side{display:grid;grid-template-columns:238px minmax(0,1fr);gap:48px;align-items:start;}
.anchor-nav{
  position:sticky;top:88px;padding:20px;border-radius:var(--radius-lg);
  background:var(--panel);border:1px solid var(--panel-border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10);
}
.anchor-nav h3{font-size:14px;color:var(--text);margin-bottom:14px;letter-spacing:0.02em;}
.anchor-nav li + li{margin-top:4px;}
.anchor-nav a{
  display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:10px;
  font-size:13.5px;color:var(--text-2);
  transition:color .2s ease,background-color .2s ease,padding-left .2s ease;
}
.anchor-nav a::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--text-3);flex:0 0 auto;
  transition:background-color .2s ease,box-shadow .2s ease;
}
.anchor-nav a:hover{color:var(--text);background:rgba(255,255,255,0.045);padding-left:14px;}
.anchor-nav a:hover::before{background:var(--brand);box-shadow:0 0 8px var(--brand-glow);}

/* ---------- 能力矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;padding-bottom:32px;}
.cap-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:0 10px 30px -18px rgba(0,0,0,0.8);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.cap-card:hover{
  transform:translateY(-3px);border-color:rgba(47,224,194,0.4);
  box-shadow:0 18px 40px -22px rgba(0,0,0,0.9),0 0 0 1px rgba(47,224,194,0.14);
}
.cap-icon{
  width:42px;height:42px;display:grid;place-items:center;border-radius:12px;margin-bottom:18px;
  background:linear-gradient(160deg,rgba(47,224,194,0.2),rgba(47,224,194,0.03));
  border:1px solid var(--panel-border);
}
.cap-card h3{font-size:18px;margin-bottom:10px;line-height:1.45;}
.cap-card p{font-size:14px;color:var(--text-2);line-height:1.8;}
.cap-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:13.5px;font-weight:600;color:var(--brand);
  transition:gap .2s ease,color .2s ease;
}
.cap-link:hover{gap:10px;color:#5AF0D6;}
@media (min-width:1024px){
  .matrix > .cap-card:nth-child(even){margin-top:34px;}
}

/* ---------- 图文流程 ---------- */
.flow-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;align-items:center;}
.flow-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--panel-border);
  box-shadow:0 24px 60px -30px rgba(0,0,0,0.95);
}
.flow-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1);}
.flow-media:hover img{transform:scale(1.04);}
.flow-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0.05) 40%,rgba(7,12,20,0.72) 100%);
}
.flow-tag{
  position:absolute;left:18px;bottom:18px;z-index:2;
  font-size:12px;letter-spacing:0.04em;color:var(--accent);
  border:1px solid rgba(255,180,84,0.42);background:rgba(7,12,20,0.72);
  padding:5px 12px;border-radius:999px;backdrop-filter:blur(6px);
}
.step-list{counter-reset:step;}
.step-list li{
  position:relative;padding:16px 0 16px 52px;border-bottom:1px solid var(--line);
}
.step-list li:last-child{border-bottom:0;}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:16px;
  font-family:ui-monospace,Menlo,monospace;font-size:13px;font-weight:600;color:var(--brand);
  width:34px;height:34px;display:grid;place-items:center;border-radius:10px;
  background:rgba(47,224,194,0.08);border:1px solid var(--panel-border);
}
.step-list h3{font-size:16px;margin-bottom:6px;}
.step-list p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- 表格 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--panel);
  overflow-x:auto;box-shadow:0 10px 30px -20px rgba(0,0,0,0.85);
}
table{width:100%;border-collapse:collapse;min-width:760px;}
thead th{
  text-align:left;padding:15px 20px;font-size:12.5px;letter-spacing:0.06em;
  color:var(--text-3);font-weight:600;border-bottom:1px solid var(--line);
  background:rgba(255,255,255,0.02);white-space:nowrap;
}
tbody td{
  padding:17px 20px;font-size:14.5px;color:var(--text-2);border-bottom:1px solid var(--line);
  vertical-align:middle;
}
tbody tr:nth-child(even){background:rgba(255,255,255,0.02);}
tbody tr:last-child td{border-bottom:0;}
tbody tr:hover{background:rgba(47,224,194,0.045);}
td.strong{color:var(--text);font-weight:600;}
td .num{font-family:ui-monospace,Menlo,monospace;color:var(--text);}

/* ---------- 数据带 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  background:var(--panel);box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
}
.stat-item{padding:30px 26px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-family:ui-monospace,"JetBrains Mono",Menlo,monospace;
  font-size:clamp(26px,3vw,40px);line-height:1.1;color:var(--accent);font-weight:600;
}
.stat-lbl{font-size:13px;color:var(--text-3);margin-top:8px;}
.band-note{margin-top:22px;font-size:14.5px;color:var(--text-2);max-width:760px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;display:grid;gap:14px;}
.faq-item{
  border:1px solid var(--line);border-radius:14px;background:var(--panel);overflow:hidden;
  transition:border-color .24s ease,background-color .24s ease;
}
.faq-item:hover{border-color:rgba(47,224,194,0.28);}
.faq-item.open{border-color:var(--panel-border);background:rgba(47,224,194,0.045);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .26s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:13px;height:1.6px;}
.faq-icon::after{width:1.6px;height:13px;transition:opacity .26s ease;}
.faq-item.open .faq-icon{transform:rotate(90deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-item.open .faq-a{max-height:340px;}
.faq-a-inner{
  position:relative;padding:0 22px 20px 22px;font-size:14.5px;color:var(--text-2);line-height:1.85;
}
.faq-item.open .faq-a-inner::before{
  content:"";position:absolute;left:0;top:2px;bottom:18px;width:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 14px var(--brand-glow);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;padding:44px;
  border:1px solid var(--panel-border);border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(47,224,194,0.13),rgba(10,16,24,0.72) 62%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10),0 24px 60px -34px rgba(0,0,0,0.95);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,194,0.22),transparent 68%);
  filter:blur(30px);pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:620px;}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;line-height:1.32;}
.cta-copy p{color:var(--text-2);font-size:15px;}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:24px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,16,24,0.15),rgba(7,12,20,0.95));
}
.glass-card{
  background:var(--panel);border:1px solid var(--panel-border);backdrop-filter:blur(10px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10);
}
.footer-top{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:28px 30px;border-radius:var(--radius-lg);margin:52px 0 44px;
}
.footer-desc{margin-top:12px;font-size:14px;color:var(--text-2);max-width:520px;line-height:1.8;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:46px;
}
.footer-grid h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-grid li + li{margin-top:10px;}
.footer-grid li a{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.footer-grid li a:hover{color:var(--brand);}
.tiny{font-size:13.5px;color:var(--text-3);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:20px 24px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .cmd-search{width:170px;}
  .cmd-search:focus-within{width:210px;}
  .nav-links a{font-size:13px;padding:8px 8px;}
  .nav-links a.active::after{left:8px;right:8px;}
}
@media (max-width:1180px){
  .icon-link{display:none;}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;top:64px;right:0;bottom:0;width:min(320px,84vw);
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    padding:22px;margin-left:0;
    background:rgba(10,16,24,0.98);border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .3s ease;overflow-y:auto;
    backdrop-filter:blur(18px);
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{font-size:15px;padding:12px 14px;}
  .nav-links a.active{background:rgba(47,224,194,0.08);}
  .nav-links a.active::after{display:none;}
  .cmd-search{display:none;}
  .menu-btn{display:flex;}
  .nav-wrap{height:60px;}
  .layout-side{grid-template-columns:minmax(0,1fr);gap:28px;}
  .anchor-nav{position:static;}
  .flow-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .section{padding:72px 0;}
  .page-hero{padding:64px 0 56px;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hero-stat:nth-child(2){border-right:0;}
  .hero-stat:nth-child(1),.hero-stat:nth-child(2){border-bottom:1px solid var(--line);}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media (max-width:767px){
  .matrix{grid-template-columns:minmax(0,1fr);}
  .section{padding:56px 0;}
  .container-x{padding:0 20px;}
  .cta-band{padding:32px 24px;}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%;}
  .footer-top{padding:24px;}
}
@media (max-width:520px){
  .brand-text{font-size:14.5px;}
  .hero-stats{grid-template-columns:minmax(0,1fr);}
  .hero-stat{border-right:0;border-bottom:1px solid var(--line);}
  .hero-stat:last-child{border-bottom:0;}
  .stat-band{grid-template-columns:minmax(0,1fr);}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{font-size:12.5px;}
}

/* roulang page: category2 */
:root{
  --bg-base:#070C14;
  --bg-deep:#0A1018;
  --panel:rgba(255,255,255,0.045);
  --panel-border:rgba(47,224,194,0.16);
  --brand:#2FE0C2;
  --brand-deep:#14A98F;
  --brand-glow:rgba(47,224,194,0.45);
  --accent:#FFB454;
  --link:#4DA6FF;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#63758C;
  --line:rgba(255,255,255,0.08);
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --font-mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(900px 540px at 88% -8%, rgba(47,224,194,0.15), transparent 62%),
    radial-gradient(780px 520px at -12% 46%, rgba(47,224,194,0.10), transparent 60%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size:32px 32px;
  opacity:0.03;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text)}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--link);outline-offset:2px;border-radius:4px}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,12,20,0.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{
  background:rgba(7,12,20,0.9);
  border-bottom-color:var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  white-space:nowrap;
}
.brand-mark{
  width:32px;
  height:32px;
  border-radius:10px;
  display:grid;
  place-items:center;
  background:rgba(47,224,194,0.10);
  border:1px solid var(--panel-border);
  flex:0 0 auto;
}
.brand-text{
  font-size:15px;
  font-weight:700;
  letter-spacing:0.01em;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:22px;
  margin-left:6px;
  flex:1 1 auto;
}
.nav-links a{
  position:relative;
  font-size:14px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-4px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px var(--brand-glow);
}
.nav-right{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  margin-left:auto;
}
.cmd-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:240px;
  height:38px;
  padding:0 10px;
  border-radius:12px;
  background:var(--panel);
  border:1px solid var(--line);
  transition:width .26s cubic-bezier(.2,.7,.3,1),border-color .2s ease,box-shadow .2s ease;
}
.cmd-search:focus-within{
  width:300px;
  border-color:rgba(47,224,194,0.6);
  box-shadow:0 0 0 3px rgba(47,224,194,0.12);
}
.cmd-search input{
  flex:1 1 auto;
  min-width:0;
  background:transparent;
  border:0;
  outline:none;
  color:var(--text);
  font-size:13px;
}
.cmd-search input::placeholder{color:var(--text-3)}
.cmd-search kbd{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--text-3);
  border:1px solid var(--line);
  border-radius:5px;
  padding:1px 6px;
  flex:0 0 auto;
}
.icon-link{
  font-size:13px;
  color:var(--text-2);
  padding:8px 10px;
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.icon-link:hover{color:var(--text);background:rgba(255,255,255,0.05)}
.menu-btn{
  display:none;
  width:38px;
  height:38px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--panel);
  cursor:pointer;
  padding:0;
  place-items:center;
  gap:4px;
}
.menu-btn span{
  display:block;
  width:16px;
  height:1.5px;
  background:var(--text);
  border-radius:2px;
  margin:3px auto;
  transition:transform .24s ease,opacity .24s ease;
}

/* ---------- 按钮 ---------- */
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  font-size:14px;
  font-weight:600;
  color:#04120F;
  border:0;
  border-radius:var(--radius-btn);
  cursor:pointer;
  background-image:linear-gradient(180deg,#3BEBCB,var(--brand-deep));
  box-shadow:0 0 0 1px rgba(47,224,194,0.5),0 10px 34px -12px var(--brand-glow);
  transition:filter .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(47,224,194,0.65),0 16px 40px -14px var(--brand-glow);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 0 1px rgba(47,224,194,0.6),0 6px 18px -12px var(--brand-glow);
}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:10px}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  font-size:14px;
  font-weight:600;
  color:var(--text);
  border-radius:var(--radius-btn);
  background:var(--panel);
  border:1px solid var(--panel-border);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
  white-space:nowrap;
}
.btn-ghost:hover{
  transform:translateY(-1px);
  border-color:rgba(47,224,194,0.5);
  background:rgba(47,224,194,0.08);
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13.5px;
  color:var(--brand);
  transition:gap .2s ease,color .2s ease;
}
.text-link:hover{gap:10px;color:#5BF0D6}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative}
.section-alt{padding:96px 0;background:var(--bg-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line);position:relative}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:0.08em;
  color:var(--brand);
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(24px,2.7vw,36px);
  line-height:1.25;
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:15.5px}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 13px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:0.04em;
  color:var(--accent);
  border:1px solid rgba(255,180,84,0.4);
  background:rgba(255,180,84,0.08);
  margin-bottom:20px;
}
.badge-neutral{
  color:var(--brand);
  border-color:var(--panel-border);
  background:rgba(47,224,194,0.08);
}
.glass-card{
  background:var(--panel);
  border:1px solid var(--panel-border);
  border-radius:var(--radius-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10);
}

/* ---------- Hero ---------- */
.hero-wrap{padding:28px 0 8px}
.hero-banner{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border:1px solid var(--line);
  box-shadow:0 30px 70px -40px rgba(0,0,0,0.95);
}
.hero-banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0.74) 0%,rgba(7,12,20,0.86) 58%,rgba(7,12,20,0.96) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:76px 56px 60px;
  max-width:860px;
}
.hero-inner h1{
  font-size:clamp(32px,4.4vw,54px);
  line-height:1.14;
  letter-spacing:0.01em;
  margin-bottom:18px;
}
.hero-sub{
  font-size:16.5px;
  color:var(--text-2);
  max-width:620px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-stats > div{
  padding-right:38px;
  margin-right:38px;
  border-right:1px solid var(--line);
}
.hero-stats > div:last-child{border-right:0;margin-right:0;padding-right:0}
.stat-num{
  display:block;
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:600;
  color:var(--accent);
  line-height:1.2;
}
.stat-label{
  display:block;
  font-size:12px;
  color:var(--text-3);
  letter-spacing:0.04em;
}

/* ---------- 步骤条 ---------- */
.step-track{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.step-item{position:relative}
.step-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.step-num{
  flex:0 0 auto;
  width:42px;
  height:42px;
  border-radius:999px;
  display:grid;
  place-items:center;
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--brand);
  background:rgba(47,224,194,0.10);
  border:1px solid var(--panel-border);
}
.step-line{flex:1 1 auto;height:1px;background:linear-gradient(90deg,var(--panel-border),rgba(47,224,194,0.02))}
.step-item:last-child .step-line{background:transparent}
.step-item h3{font-size:17px;line-height:1.4;margin-bottom:10px;font-weight:600}
.step-item p{font-size:14px;color:var(--text-2);line-height:1.75}

/* ---------- 场景卡 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:1.34fr 1fr;
  grid-auto-rows:minmax(0,auto);
  gap:24px;
}
.scene-card{
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border:1px solid var(--panel-border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:0 10px 30px -18px rgba(0,0,0,0.8);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.scene-card:hover{
  transform:translateY(-3px);
  border-color:rgba(47,224,194,0.4);
  box-shadow:0 20px 44px -24px rgba(0,0,0,0.95);
}
.scene-card.is-feature{grid-row:span 2}
.scene-media{position:relative;aspect-ratio:16/10;overflow:hidden;flex:0 0 auto}
.scene-card.is-feature .scene-media{aspect-ratio:16/9}
.scene-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.scene-card:hover .scene-media img{transform:scale(1.04)}
.scene-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0.05) 0%,rgba(7,12,20,0.72) 100%);
}
.scene-tag{
  position:absolute;
  left:16px;
  bottom:14px;
  z-index:2;
  font-size:12px;
  padding:4px 11px;
  border-radius:999px;
  color:var(--accent);
  border:1px solid rgba(255,180,84,0.4);
  background:rgba(7,12,20,0.72);
  letter-spacing:0.04em;
}
.scene-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1 1 auto}
.scene-body h3{font-size:19px;line-height:1.4;font-weight:600}
.scene-body > p{font-size:14px;color:var(--text-2);line-height:1.75}
.check-list{display:flex;flex-direction:column;gap:9px}
.check-list li{
  position:relative;
  padding-left:18px;
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.7;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--brand);
  opacity:0.85;
}
.scene-body .text-link{margin-top:auto;padding-top:6px}

/* ---------- 功能模块交错 ---------- */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  padding:44px 0;
  border-bottom:1px solid var(--line);
}
.feature-row:last-child{border-bottom:0;padding-bottom:0}
.feature-row:first-child{padding-top:0}
.feature-row.reverse .feature-text{order:2}
.feature-row.reverse .feature-media{order:1}
.feature-text h3{font-size:22px;line-height:1.4;margin-bottom:14px;font-weight:600}
.feature-text > p{font-size:15px;color:var(--text-2);margin-bottom:20px}
.feature-media{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0.0),rgba(7,12,20,0.55));
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  font-size:12px;
  letter-spacing:0.04em;
  color:var(--text-2);
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,0.03);
}

/* ---------- 数据带 ---------- */
.metric-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.metric{
  padding:0 30px;
  border-left:1px solid var(--line);
}
.metric:first-child{border-left:0;padding-left:0}
.metric:last-child{padding-right:0}
.metric-num{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(28px,3vw,44px);
  font-weight:600;
  color:var(--accent);
  line-height:1.1;
  margin-bottom:10px;
}
.metric-title{font-size:15px;font-weight:600;margin-bottom:6px}
.metric-desc{font-size:13.5px;color:var(--text-3);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .24s ease,background .24s ease;
}
.faq-item.is-open{border-color:var(--panel-border);background:rgba(255,255,255,0.055)}
.faq-q{margin:0;font-size:16px;font-weight:600}
.faq-q button{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q button:hover{color:var(--brand)}
.faq-item.is-open .faq-q button::before{
  content:"";
  position:absolute;
  left:0;
  top:14px;
  bottom:14px;
  width:2px;
  border-radius:2px;
  background:var(--brand);
}
.faq-icon{position:relative;width:14px;height:14px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .26s ease;
}
.faq-icon::before{left:0;top:6px;width:14px;height:2px}
.faq-icon::after{left:6px;top:0;width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .26s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{
  padding:0 22px 20px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  padding:40px 44px;
  border-radius:var(--radius-lg);
  border:1px solid var(--panel-border);
  background:linear-gradient(120deg,rgba(47,224,194,0.14),rgba(255,255,255,0.03));
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  margin-top:20px;
}
.footer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:26px 30px;
  margin-bottom:52px;
}
.footer-desc{
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
  margin-top:12px;
  max-width:640px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-grid h4{
  font-size:14px;
  font-weight:600;
  margin-bottom:16px;
  color:var(--text);
}
.footer-grid ul{display:flex;flex-direction:column;gap:10px}
.footer-grid ul a{
  font-size:13.5px;
  color:var(--text-2);
  transition:color .2s ease;
}
.footer-grid ul a:hover{color:var(--brand)}
.tiny{font-size:13.5px;color:var(--text-2);line-height:1.7}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:24px;
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:min(330px,86vw);
  z-index:90;
  padding:22px;
  background:rgba(10,16,24,0.98);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .3s cubic-bezier(.2,.7,.3,1);
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;
  inset:0;
  z-index:85;
  background:rgba(4,8,14,0.7);
  backdrop-filter:blur(3px);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  font-size:14.5px;
  color:var(--text-2);
  padding:12px 12px;
  border-radius:10px;
  transition:background .2s ease,color .2s ease;
}
.drawer-nav a:hover{background:rgba(255,255,255,0.05);color:var(--text)}
.drawer-nav a.active{color:var(--brand);background:rgba(47,224,194,0.08)}
.drawer-search{width:100%}
.drawer-search input{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .cmd-search{width:200px}
  .cmd-search:focus-within{width:250px}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .menu-btn{display:grid}
  .icon-link{display:none}
  .cmd-search{display:none}
  .hero-inner{padding:60px 40px 48px}
  .section,.section-alt{padding:72px 0}
  .step-track{grid-template-columns:repeat(2,1fr);gap:26px}
  .scene-grid{grid-template-columns:1fr}
  .scene-card.is-feature{grid-row:auto}
  .feature-row{gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-band{flex-direction:column;align-items:flex-start;gap:24px;padding:34px 32px}
  .cta-actions{flex:1 1 auto}
}
@media (max-width:768px){
  .container-x{padding:0 20px}
  .nav-wrap{height:56px}
  .hero-wrap{padding:18px 0 4px}
  .hero-inner{padding:44px 24px 38px}
  .hero-banner{border-radius:20px}
  .hero-stats{gap:0}
  .hero-stats > div{padding-right:22px;margin-right:22px}
  .stat-num{font-size:22px}
  .section,.section-alt{padding:56px 0}
  .section-head{margin-bottom:30px}
  .step-track{grid-template-columns:1fr;gap:24px}
  .feature-row{grid-template-columns:1fr;gap:22px;padding:32px 0}
  .feature-row.reverse .feature-text{order:1}
  .feature-row.reverse .feature-media{order:2}
  .metric-band{grid-template-columns:1fr 1fr;gap:26px 0}
  .metric{padding:0 20px}
  .metric:nth-child(3){border-left:0;padding-left:0}
  .metric:nth-child(odd){border-left:0;padding-left:0}
  .footer-top{flex-direction:column;align-items:flex-start;padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .hero-inner h1{font-size:29px}
  .hero-actions{gap:10px}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%}
  .hero-stats{flex-direction:column;gap:16px}
  .hero-stats > div{
    border-right:0;
    margin-right:0;
    padding-right:0;
    padding-bottom:14px;
    border-bottom:1px solid var(--line);
    width:100%;
  }
  .hero-stats > div:last-child{border-bottom:0;padding-bottom:0}
  .metric-band{grid-template-columns:1fr}
  .metric{padding:0}
  .cta-band{padding:28px 22px}
  .cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
:root{
  --bg-base:#070C14;
  --bg-deep:#0A1018;
  --panel:rgba(255,255,255,0.045);
  --panel-border:rgba(47,224,194,0.16);
  --brand:#2FE0C2;
  --brand-deep:#14A98F;
  --brand-glow:rgba(47,224,194,0.45);
  --accent:#FFB454;
  --link:#4DA6FF;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#63758C;
  --line:rgba(255,255,255,0.08);
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --shadow-card:0 10px 30px -18px rgba(0,0,0,0.8);
  --mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(620px 420px at 88% 6%, rgba(47,224,194,0.14), transparent 70%),
    radial-gradient(720px 520px at 4% 62%, rgba(47,224,194,0.10), transparent 72%),
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size:auto,auto,32px 32px,32px 32px;
  background-attachment:fixed,fixed,fixed,fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--link);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease;}
a:hover{color:var(--brand);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);}
h1{font-size:clamp(32px,4.4vw,54px);line-height:1.14;letter-spacing:0.01em;}
h2{font-size:clamp(24px,2.7vw,36px);line-height:1.25;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:16px;line-height:1.5;font-weight:600;}
p{margin:0;}
:focus-visible{outline:2px solid var(--link);outline-offset:2px;border-radius:6px;}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,20,0.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{background:rgba(7,12,20,0.92);box-shadow:0 12px 32px -24px rgba(0,0,0,0.95);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;display:grid;place-items:center;
  border-radius:10px;background:rgba(47,224,194,0.10);
  border:1px solid var(--panel-border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10);
}
.brand-text{font-size:15px;font-weight:600;letter-spacing:0.01em;}
.nav-links{display:flex;align-items:center;gap:2px;}
.nav-links a{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:14px;color:var(--text-2);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,0.045);}
.nav-links a.active{color:var(--brand);}
.nav-links a.active::after{
  content:"";position:absolute;left:20%;right:20%;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;box-shadow:0 0 12px var(--brand-glow);
}
.nav-right{display:flex;align-items:center;gap:10px;}
.cmd-search{
  display:flex;align-items:center;gap:8px;height:38px;width:240px;padding:0 10px;
  background:rgba(255,255,255,0.05);border:1px solid var(--line);border-radius:10px;
  transition:width .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.cmd-search:focus-within{width:300px;border-color:rgba(47,224,194,0.55);box-shadow:0 0 0 3px rgba(47,224,194,0.12);}
.cmd-search input{flex:1;min-width:0;background:transparent;border:0;outline:0;font-size:13px;color:var(--text);}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-search kbd{font-family:var(--mono);font-size:11px;color:var(--text-3);border:1px solid var(--line);border-radius:4px;padding:1px 5px;}
.icon-link{font-size:13px;color:var(--text-2);}
.icon-link:hover{color:var(--brand);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:11px 20px;border:0;border-radius:var(--radius-btn);cursor:pointer;
  font-size:14px;font-weight:600;color:#04140F;
  background:linear-gradient(180deg,#2FE0C2,#14A98F);
  box-shadow:0 0 0 1px rgba(47,224,194,0.5),0 10px 34px -12px var(--brand-glow);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),filter .2s ease,box-shadow .2s ease;
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);color:#04140F;}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(47,224,194,0.6),0 6px 18px -10px var(--brand-glow);}
.btn-sm{padding:8px 14px;font-size:13px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:11px 20px;border-radius:var(--radius-btn);cursor:pointer;
  font-size:14px;font-weight:600;color:var(--text);
  background:transparent;border:1px solid var(--panel-border);
  transition:transform .2s ease,border-color .2s ease,color .2s ease,background .2s ease;
}
.btn-ghost:hover{transform:translateY(-1px);border-color:rgba(47,224,194,0.55);color:var(--brand);background:rgba(47,224,194,0.07);}
.menu-btn{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:38px;height:34px;border-radius:9px;background:rgba(255,255,255,0.05);
  border:1px solid var(--line);cursor:pointer;
}
.menu-btn span{display:block;width:16px;height:2px;margin:0 auto;background:var(--text);border-radius:2px;}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;left:0;right:0;top:57px;z-index:55;
  display:flex;flex-direction:column;gap:4px;padding:20px 20px 26px;
  background:rgba(7,12,20,0.98);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px);
  opacity:0;pointer-events:none;transform:translateY(-8px);
  transition:opacity .22s ease,transform .22s ease;
}
.drawer.open{opacity:1;pointer-events:auto;transform:translateY(0);}
.drawer .drawer-search{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;margin-bottom:10px;
  background:rgba(255,255,255,0.05);border:1px solid var(--line);border-radius:10px;
}
.drawer .drawer-search input{flex:1;min-width:0;background:transparent;border:0;outline:0;font-size:14px;}
.drawer a{display:block;padding:11px 12px;border-radius:10px;font-size:15px;color:var(--text-2);}
.drawer a:hover,.drawer a.active{color:var(--brand);background:rgba(47,224,194,0.08);}
.drawer .btn-primary{color:#04140F;margin-top:12px;text-align:center;display:flex;}

/* ---------- generic ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-block;margin-bottom:14px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:500;letter-spacing:0.04em;color:var(--accent);
  border:1px solid rgba(255,180,84,0.35);background:rgba(255,180,84,0.08);
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;}
.glass-card{
  background:var(--panel);
  border:1px solid var(--panel-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.10);
}
.badge{
  display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:500;
  letter-spacing:0.04em;color:var(--accent);border:1px solid rgba(255,180,84,0.35);
  background:rgba(255,180,84,0.08);
}
.mono{font-family:var(--mono);}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:104px 0 88px;border-bottom:1px solid var(--line);}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:0.55;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0.72) 0%,rgba(7,12,20,0.86) 62%,rgba(7,12,20,1) 100%);
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:center;}
.hero h1{margin-bottom:18px;}
.hero .hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px;}
.data-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);padding-top:24px;gap:8px;
}
.data-strip .item{padding-right:16px;border-right:1px solid var(--line);}
.data-strip .item:last-child{border-right:0;padding-right:0;}
.data-strip .num{font-family:var(--mono);font-size:clamp(22px,2.4vw,30px);font-weight:600;color:var(--accent);line-height:1.2;}
.data-strip .label{margin-top:6px;font-size:12px;color:var(--text-3);line-height:1.6;}
.hero-card{padding:26px;}
.hero-card h3{font-size:16px;margin-bottom:18px;color:var(--text-2);font-weight:600;letter-spacing:0.02em;}
.channel{display:flex;align-items:flex-start;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);}
.channel:last-of-type{border-bottom:0;}
.channel .dot{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(47,224,194,0.10);border:1px solid var(--panel-border);color:var(--brand);
}
.channel .c-title{font-size:15px;font-weight:600;color:var(--text);}
.channel .c-desc{font-size:13px;color:var(--text-2);line-height:1.7;}
.hero-note{margin-top:16px;font-size:12px;color:var(--text-3);line-height:1.7;}

/* ---------- issue cards (1 big + 2 small) ---------- */
.issue-grid{display:grid;grid-template-columns:1.5fr 1fr;grid-template-rows:auto auto;gap:24px;}
.issue-card{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  background:var(--panel);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease;
}
.issue-card:hover{transform:translateY(-3px);border-color:rgba(47,224,194,0.4);}
.issue-card.big{grid-row:span 2;display:flex;flex-direction:column;}
.issue-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg-deep);}
.issue-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s cubic-bezier(.2,.7,.3,1);}
.issue-card:hover .issue-media img{transform:scale(1.04);}
.issue-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0.15) 0%,rgba(7,12,20,0.82) 100%);
}
.issue-body{padding:22px 24px 24px;}
.issue-body .badge{margin-bottom:12px;}
.issue-body h3{margin-bottom:10px;}
.issue-body p{font-size:14px;color:var(--text-2);line-height:1.75;}
.issue-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13px;font-weight:600;color:var(--brand);}
.issue-link:hover{color:var(--brand);text-decoration:underline;}
.issue-card.small{display:grid;grid-template-columns:150px 1fr;align-items:stretch;}
.issue-card.small .issue-media{aspect-ratio:auto;height:100%;}

/* ---------- support columns ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
.panel-card{padding:30px;border-radius:var(--radius-lg);background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-card);}
.panel-card h3{margin-bottom:8px;}
.panel-card .panel-sub{font-size:14px;color:var(--text-2);margin-bottom:22px;}
.check-list{list-style:none;margin:0;padding:0;}
.check-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);}
.check-list li:last-child{border-bottom:0;}
.check-list .mark{
  width:20px;height:20px;flex:0 0 20px;margin-top:4px;border-radius:6px;
  display:grid;place-items:center;background:rgba(47,224,194,0.12);color:var(--brand);
  font-size:12px;font-weight:700;font-family:var(--mono);
}
.check-list .li-title{font-size:15px;font-weight:600;color:var(--text);}
.check-list .li-desc{font-size:13px;color:var(--text-2);line-height:1.7;}
.timeline{position:relative;padding-left:26px;margin-top:6px;}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--brand),rgba(47,224,194,0.08));}
.tl-item{position:relative;padding-bottom:24px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-23px;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--bg-base);border:2px solid var(--brand);box-shadow:0 0 12px var(--brand-glow);
}
.tl-item .tl-title{font-size:15px;font-weight:600;color:var(--text);}
.tl-item .tl-time{font-family:var(--mono);font-size:12px;color:var(--accent);margin-left:8px;}
.tl-item .tl-desc{font-size:13px;color:var(--text-2);line-height:1.75;margin-top:4px;}

/* ---------- table ---------- */
.table-wrap{
  overflow-x:auto;border-radius:var(--radius-card);
  border:1px solid var(--panel-border);background:var(--panel);
  box-shadow:var(--shadow-card);
}
table{width:100%;border-collapse:collapse;min-width:640px;}
thead th{
  text-align:left;padding:16px;font-size:12px;font-weight:500;letter-spacing:0.04em;
  color:var(--text-3);border-bottom:1px solid var(--panel-border);white-space:nowrap;
}
tbody td{padding:16px;font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line);vertical-align:top;}
tbody tr:nth-child(even){background:rgba(255,255,255,0.02);}
tbody tr:last-child td{border-bottom:0;}
tbody td:first-child{color:var(--text);font-weight:600;}
td .mono,th .mono{font-family:var(--mono);color:var(--accent);}

/* ---------- faq ---------- */
.faq-list{max-width:820px;}
.faq-item{
  position:relative;margin-bottom:12px;border-radius:14px;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);
  transition:border-color .22s ease;
}
.faq-item:hover{border-color:rgba(47,224,194,0.3);}
.faq-item.open{border-color:var(--panel-border);}
.faq-item.open::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--brand);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.5;
}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--panel-border);color:var(--brand);font-size:14px;line-height:1;
  transition:transform .26s ease,background .26s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(47,224,194,0.12);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;padding:0 20px;}
.faq-item.open .faq-a{padding-bottom:20px;}
.faq-a p{font-size:14px;color:var(--text-2);line-height:1.85;}

/* ---------- cta form ---------- */
.cta-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:32px;align-items:start;}
.form-card{padding:30px;border-radius:var(--radius-lg);background:var(--panel);border:1px solid var(--panel-border);box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.10);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border-radius:10px;font-size:14px;
  background:rgba(255,255,255,0.04);border:1px solid var(--line);color:var(--text);
  outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{resize:vertical;min-height:110px;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(47,224,194,0.6);box-shadow:0 0 0 3px rgba(47,224,194,0.12);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.form-tip{font-size:12px;color:var(--text-3);margin-top:12px;line-height:1.7;}
.contact-card{padding:28px;border-radius:var(--radius-lg);background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-card);}
.contact-card h3{margin-bottom:16px;font-size:17px;}
.contact-row{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14px;}
.contact-row:last-child{border-bottom:0;}
.contact-row span:first-child{color:var(--text-2);}
.contact-row span:last-child{color:var(--text);font-family:var(--mono);font-size:13px;}
.contact-note{margin-top:18px;font-size:13px;color:var(--text-2);line-height:1.8;}

/* ---------- footer ---------- */
.site-footer{margin-top:96px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,16,24,0.6),rgba(7,12,20,1));padding-top:48px;}
.footer-top{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:24px 28px;margin-bottom:48px;}
.footer-desc{font-size:13px;color:var(--text-2);line-height:1.8;max-width:520px;margin-top:10px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
.footer-grid h4{margin-bottom:14px;font-size:14px;}
.footer-grid ul{list-style:none;margin:0;padding:0;}
.footer-grid li{margin-bottom:10px;}
.footer-grid a{font-size:13px;color:var(--text-2);}
.footer-grid a:hover{color:var(--brand);}
.tiny{font-size:12px;color:var(--text-3);line-height:1.75;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;
  padding:20px 24px;border-top:1px solid var(--line);font-size:12px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .hero-inner{gap:40px;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .cmd-search{display:none;}
  .icon-link{display:none;}
  .menu-btn{display:flex;}
  .nav-wrap{height:56px;}
  .section{padding:72px 0;}
  .hero{padding:76px 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .split{grid-template-columns:1fr;gap:24px;}
  .cta-grid{grid-template-columns:1fr;gap:24px;}
  .issue-grid{grid-template-columns:1fr;grid-template-rows:auto;}
  .issue-card.big{grid-row:auto;}
  .issue-card.small{grid-template-columns:140px 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .container-x{padding:0 20px;}
  .section{padding:56px 0;}
  .hero{padding:56px 0 48px;}
  .data-strip{grid-template-columns:1fr 1fr;gap:20px;}
  .data-strip .item{border-right:0;padding-right:0;}
  .data-strip .item:nth-child(odd){border-right:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-top{padding:20px;}
  .panel-card,.form-card,.contact-card,.hero-card{padding:22px;}
  .issue-card.small{grid-template-columns:1fr;}
  .issue-card.small .issue-media{aspect-ratio:16/10;height:auto;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%;}
}
@media (max-width:520px){
  h1{font-size:30px;}
  .brand-text{font-size:14px;}
  .data-strip{grid-template-columns:1fr;}
  .data-strip .item:nth-child(odd){border-right:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
    --bg-base:#070C14;
    --bg-deep:#0A1018;
    --panel:rgba(255,255,255,0.045);
    --panel-border:rgba(47,224,194,0.16);
    --brand:#2FE0C2;
    --brand-deep:#14A98F;
    --brand-glow:rgba(47,224,194,0.45);
    --accent:#FFB454;
    --link:#4DA6FF;
    --text:#E9F2FA;
    --text-2:#93A6BC;
    --text-3:#63758C;
    --line:rgba(255,255,255,0.08);
    --radius-card:16px;
    --radius-lg:20px;
    --radius-btn:12px;
    --mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,Consolas,monospace;
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    background:var(--bg-base);
    color:var(--text);
    font-size:16px;
    line-height:1.85;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  body::before{
    content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,0.03) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,0.03) 1px,transparent 1px);
    background-size:32px 32px;
  }
  body::after{
    content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
    background:
      radial-gradient(520px 420px at 88% 4%,rgba(47,224,194,0.14),transparent 65%),
      radial-gradient(560px 460px at 6% 62%,rgba(47,224,194,0.10),transparent 68%);
  }
  a{color:inherit;}
  img{max-width:100%;display:block;}
  button{font-family:inherit;}
  h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:0.01em;}
  p{margin:0;}
  :focus-visible{outline:2px solid var(--link);outline-offset:2px;border-radius:6px;}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:2;}
  .section{padding:96px 0;position:relative;z-index:2;}
  .section-tight{padding:36px 0 0;position:relative;z-index:2;}
  .mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(7,12,20,0.72);
    border-bottom:1px solid transparent;
    transition:background .24s ease,border-color .24s ease,backdrop-filter .24s ease;
  }
  .site-header.scrolled{
    background:rgba(7,12,20,0.9);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-bottom-color:var(--line);
  }
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px;}
  .brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;font-size:16px;white-space:nowrap;}
  .brand-mark{
    width:32px;height:32px;border-radius:10px;display:grid;place-items:center;flex:none;
    background:var(--panel);border:1px solid var(--panel-border);box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
  }
  .brand-text{color:var(--text);letter-spacing:0.01em;}
  .nav-links{display:flex;align-items:center;gap:2px;}
  .nav-links a{
    position:relative;font-size:14px;color:var(--text-2);text-decoration:none;
    padding:8px 11px;border-radius:9px;white-space:nowrap;transition:color .2s ease,background .2s ease;
  }
  .nav-links a:hover{color:var(--text);background:rgba(255,255,255,0.05);}
  .nav-links a.active{color:var(--brand);}
  .nav-links a.active::after{
    content:"";position:absolute;left:11px;right:11px;bottom:1px;height:2px;border-radius:2px;
    background:var(--brand);box-shadow:0 0 12px var(--brand-glow);
  }
  .nav-right{display:flex;align-items:center;gap:14px;}
  .cmd-search{
    display:flex;align-items:center;gap:8px;width:240px;height:38px;padding:0 12px;
    border-radius:10px;background:var(--panel);border:1px solid var(--line);
    transition:width .26s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
  }
  .cmd-search:focus-within{width:300px;border-color:var(--brand);box-shadow:0 0 0 1px rgba(47,224,194,0.35);}
  .cmd-search input{flex:1;min-width:0;background:none;border:0;outline:none;color:var(--text);font-size:13px;}
  .cmd-search input::placeholder{color:var(--text-3);}
  .cmd-search kbd{
    font-family:var(--mono);font-size:11px;color:var(--text-3);
    border:1px solid var(--line);border-radius:6px;padding:1px 6px;line-height:1.4;
  }
  .icon-link{font-size:13px;color:var(--text-2);text-decoration:none;transition:color .2s ease;white-space:nowrap;}
  .icon-link:hover{color:var(--brand);}

  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:14px;font-weight:600;text-decoration:none;color:#04211C;
    background:linear-gradient(180deg,var(--brand),var(--brand-deep));
    box-shadow:0 0 0 1px rgba(47,224,194,0.5),0 10px 34px -12px var(--brand-glow);
    transition:transform .22s cubic-bezier(.2,.7,.3,1),filter .22s ease,box-shadow .22s ease;
    white-space:nowrap;border:0;cursor:pointer;
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);filter:brightness(.97);box-shadow:0 0 0 1px rgba(47,224,194,0.6),0 6px 18px -10px var(--brand-glow);}
  .btn-sm{height:38px;padding:0 16px;font-size:13px;}
  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:14px;font-weight:600;text-decoration:none;color:var(--text);
    background:var(--panel);border:1px solid var(--panel-border);
    transition:transform .22s cubic-bezier(.2,.7,.3,1),border-color .22s ease,background .22s ease;
    white-space:nowrap;
  }
  .btn-ghost:hover{transform:translateY(-1px);border-color:rgba(47,224,194,0.45);background:rgba(47,224,194,0.08);}
  .btn-ghost:active{transform:translateY(0);}

  .menu-btn{
    display:none;width:40px;height:38px;border-radius:10px;background:var(--panel);
    border:1px solid var(--line);cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:4px;
  }
  .menu-btn span{display:block;width:16px;height:1.5px;background:var(--text);border-radius:2px;transition:.24s;}
  .menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
  .menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}
  .drawer-extra{display:none;}

  /* ---------- hero ---------- */
  .cat-hero{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    padding:64px 56px 48px;
    background-image:
      linear-gradient(90deg,rgba(7,12,20,0.94) 6%,rgba(7,12,20,0.7) 55%,rgba(7,12,20,0.86) 100%),
      url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
    border:1px solid var(--panel-border);
    box-shadow:0 10px 30px -18px rgba(0,0,0,0.85);
  }
  .crumb{font-size:13px;color:var(--text-3);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
  .crumb a{color:var(--text-3);text-decoration:none;transition:color .2s;}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:var(--text-3);opacity:.7;}
  .crumb .now{color:var(--text-2);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;letter-spacing:0.04em;
    color:var(--accent);border:1px solid rgba(255,180,84,0.35);background:rgba(255,180,84,0.08);
    padding:5px 14px;border-radius:999px;margin-bottom:20px;
  }
  .cat-hero h1{
    font-size:clamp(30px,4.2vw,50px);line-height:1.14;font-weight:700;max-width:820px;
  }
  .hero-sub{font-size:clamp(15px,1.5vw,18px);color:var(--text-2);margin-top:18px;max-width:640px;}
  .hero-note{font-size:14px;color:var(--text-3);margin-top:12px;max-width:700px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
  .stat-band{
    display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;
    border-top:1px solid var(--line);padding-top:26px;
  }
  .stat-item{padding-right:20px;border-right:1px solid var(--line);}
  .stat-item:last-child{border-right:0;}
  .stat-item .num{font-family:var(--mono);font-size:clamp(24px,2.6vw,34px);font-weight:700;color:var(--accent);line-height:1.1;}
  .stat-item .lbl{font-size:12px;color:var(--text-3);margin-top:8px;letter-spacing:0.04em;}

  /* ---------- section head ---------- */
  .section-head{max-width:760px;margin-bottom:44px;}
  .section-head .tag{
    display:inline-block;font-size:12px;font-weight:500;letter-spacing:0.04em;color:var(--brand);
    border:1px solid var(--panel-border);background:rgba(47,224,194,0.07);padding:4px 12px;border-radius:999px;margin-bottom:16px;
  }
  .section-head h2{font-size:clamp(23px,2.6vw,34px);}
  .section-head .sub{color:var(--text-2);font-size:15px;margin-top:14px;}
  .sec-alt{background:linear-gradient(180deg,rgba(10,16,24,0) 0%,rgba(10,16,24,0.85) 40%,rgba(10,16,24,0) 100%);}

  /* ---------- split panels ---------- */
  .split-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
  .panel-card{
    background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius-lg);
    padding:30px;box-shadow:0 10px 30px -18px rgba(0,0,0,0.8),inset 0 1px 0 rgba(255,255,255,0.06);
  }
  .panel-card h3{font-size:20px;margin-bottom:8px;}
  .panel-card .pc-sub{font-size:14px;color:var(--text-2);margin-bottom:20px;}
  .check-list{list-style:none;margin:0;padding:0;}
  .check-list li{
    display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-bottom:1px dashed var(--line);
    font-size:14.5px;color:var(--text-2);
  }
  .check-list li:last-child{border-bottom:0;padding-bottom:0;}
  .check-list li svg{flex:none;margin-top:5px;}
  .check-list strong{color:var(--text);font-weight:600;}

  .timeline{position:relative;padding-left:28px;}
  .timeline::before{
    content:"";position:absolute;left:7px;top:6px;bottom:12px;width:1px;
    background:linear-gradient(180deg,var(--brand),rgba(47,224,194,0.06));
  }
  .tl-item{position:relative;padding-bottom:26px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-item::before{
    content:"";position:absolute;left:-28px;top:5px;width:15px;height:15px;border-radius:50%;
    background:var(--bg-base);border:2px solid var(--brand);box-shadow:0 0 0 4px rgba(47,224,194,0.1);
  }
  .tl-item .tl-step{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:0.06em;}
  .tl-item h4{font-size:15.5px;margin:6px 0 6px;color:var(--text);}
  .tl-item p{font-size:14px;color:var(--text-2);}

  /* ---------- media cards ---------- */
  .card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .media-card{
    background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius-card);
    overflow:hidden;display:flex;flex-direction:column;
    transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
    box-shadow:0 10px 30px -18px rgba(0,0,0,0.8);
  }
  .media-card:hover{transform:translateY(-3px);border-color:rgba(47,224,194,0.4);box-shadow:0 18px 40px -22px rgba(0,0,0,0.95);}
  .media-card .thumb{position:relative;overflow:hidden;}
  .media-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .24s cubic-bezier(.2,.7,.3,1);}
  .media-card:hover .thumb img{transform:scale(1.04);}
  .media-card .thumb::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(7,12,20,0.05) 30%,rgba(7,12,20,0.78) 100%);
  }
  .media-card .badge{
    position:absolute;left:14px;top:14px;z-index:2;font-size:11.5px;letter-spacing:0.04em;
    color:var(--accent);border:1px solid rgba(255,180,84,0.4);background:rgba(7,12,20,0.62);
    padding:3px 11px;border-radius:999px;backdrop-filter:blur(6px);
  }
  .media-card .body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .media-card h3{font-size:17px;line-height:1.45;}
  .media-card p{font-size:14px;color:var(--text-2);line-height:1.75;}
  .media-card .foot{
    margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);
  }
  .media-card .foot .more{color:var(--brand);text-decoration:none;font-weight:600;font-size:13px;}
  .media-card .foot .more:hover{text-decoration:underline;}
  .dot{display:inline-block;width:4px;height:4px;border-radius:50%;background:var(--text-3);margin:0 8px;vertical-align:middle;}

  /* ---------- table ---------- */
  .table-scroll{overflow-x:auto;border-radius:var(--radius-card);border:1px solid var(--panel-border);background:var(--panel);}
  .spec-table{width:100%;min-width:720px;border-collapse:collapse;font-size:14px;}
  .spec-table caption{text-align:left;padding:20px 22px 0;color:var(--text-2);font-size:13px;}
  .spec-table th{
    text-align:left;font-size:12px;font-weight:500;letter-spacing:0.04em;color:var(--text-3);
    padding:16px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
  }
  .spec-table td{padding:17px 22px;border-bottom:1px solid var(--line);color:var(--text-2);vertical-align:top;}
  .spec-table tbody tr:nth-child(odd){background:rgba(255,255,255,0.02);}
  .spec-table tbody tr:hover{background:rgba(47,224,194,0.05);}
  .spec-table tbody tr:last-child td{border-bottom:0;}
  .spec-table td.v{font-family:var(--mono);color:var(--text);white-space:nowrap;}
  .pill{display:inline-block;font-size:11.5px;padding:2px 10px;border-radius:999px;border:1px solid var(--panel-border);color:var(--brand);background:rgba(47,224,194,0.08);white-space:nowrap;}
  .pill.warn{color:var(--accent);border-color:rgba(255,180,84,0.35);background:rgba(255,180,84,0.08);}

  /* ---------- feature strip ---------- */
  .feat-strip{
    display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:24px;align-items:stretch;
  }
  .feat-main{
    border-radius:var(--radius-lg);overflow:hidden;position:relative;min-height:300px;
    border:1px solid var(--panel-border);
  }
  .feat-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
  .feat-main .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,20,0.25) 20%,rgba(7,12,20,0.9) 100%);}
  .feat-main .txt{position:absolute;left:0;right:0;bottom:0;padding:26px;z-index:2;}
  .feat-main .txt h3{font-size:19px;margin-bottom:8px;}
  .feat-main .txt p{font-size:14px;color:var(--text-2);}
  .feat-side{
    background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius-lg);
    padding:26px;display:flex;flex-direction:column;gap:12px;
    box-shadow:inset 0 1px 0 rgba(255,255,255,0.06);
  }
  .feat-side .ico{
    width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
    background:rgba(47,224,194,0.09);border:1px solid var(--panel-border);
  }
  .feat-side h3{font-size:17px;}
  .feat-side p{font-size:14px;color:var(--text-2);}

  /* ---------- scenario ---------- */
  .scene-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:24px;}
  .scene-card{
    background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius-card);
    padding:26px;display:flex;flex-direction:column;gap:14px;
    transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease;
  }
  .scene-card:hover{transform:translateY(-3px);border-color:rgba(47,224,194,0.4);}
  .scene-card h3{font-size:17px;}
  .scene-card ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;}
  .scene-card li{font-size:13.5px;color:var(--text-2);padding-left:16px;position:relative;}
  .scene-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.75;}
  .scene-card .link{color:var(--brand);font-size:13px;font-weight:600;text-decoration:none;margin-top:auto;}
  .scene-card .link:hover{text-decoration:underline;}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:820px;}
  .faq-item{
    position:relative;border:1px solid var(--panel-border);background:var(--panel);
    border-radius:14px;margin-bottom:12px;overflow:hidden;
    transition:border-color .24s ease,background .24s ease;
  }
  .faq-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--brand);
    opacity:0;transition:opacity .24s ease;
  }
  .faq-item.open{border-color:rgba(47,224,194,0.4);background:rgba(47,224,194,0.05);}
  .faq-item.open::before{opacity:1;}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:19px 22px;background:none;border:0;color:var(--text);font-size:16px;font-weight:600;
    text-align:left;cursor:pointer;line-height:1.5;
  }
  .faq-q .plus{
    flex:none;width:22px;height:22px;border-radius:50%;border:1px solid var(--panel-border);
    display:grid;place-items:center;color:var(--brand);font-size:15px;line-height:1;
    transition:transform .26s ease;
  }
  .faq-item.open .faq-q .plus{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;padding:0 22px;transition:max-height .26s ease,padding .26s ease;}
  .faq-item.open .faq-a{max-height:340px;padding-bottom:20px;}
  .faq-a p{font-size:14.5px;color:var(--text-2);line-height:1.85;}

  /* ---------- CTA ---------- */
  .cta-band{
    display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
    padding:42px 44px;border-radius:var(--radius-lg);
    border:1px solid var(--panel-border);
    background:
      radial-gradient(560px 260px at 12% 10%,rgba(47,224,194,0.16),transparent 70%),
      linear-gradient(120deg,rgba(255,180,84,0.06),rgba(10,16,24,0.9));
    box-shadow:0 10px 30px -18px rgba(0,0,0,0.85),inset 0 1px 0 rgba(255,255,255,0.06);
  }
  .cta-band h2{font-size:clamp(21px,2.3vw,28px);}
  .cta-band p{color:var(--text-2);font-size:15px;margin-top:12px;max-width:620px;}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

  /* ---------- footer ---------- */
  .site-footer{position:relative;z-index:2;margin-top:96px;padding-top:8px;background:linear-gradient(180deg,rgba(10,16,24,0) 0%,rgba(10,16,24,0.9) 30%);}
  .glass-card{
    background:var(--panel);border:1px solid var(--panel-border);
    box-shadow:inset 0 1px 0 rgba(255,255,255,0.07);
  }
  .footer-top{
    display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
    padding:26px 30px;border-radius:var(--radius-lg);margin-bottom:44px;
  }
  .footer-top .footer-desc{font-size:13.5px;color:var(--text-2);max-width:560px;margin-top:10px;}
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
    padding:40px 0;border-top:1px solid var(--line);
  }
  .footer-grid h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:0.01em;}
  .footer-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;}
  .footer-grid a{color:var(--text-2);text-decoration:none;font-size:13.5px;transition:color .2s ease;}
  .footer-grid a:hover{color:var(--brand);}
  .footer-desc{font-size:13px;color:var(--text-2);line-height:1.8;max-width:520px;margin:10px 0 0;}
  .tiny{font-size:13px;color:var(--text-2);}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding:22px 0 40px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);
  }

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .section{padding:72px 0;}
    .cat-hero{padding:48px 34px 38px;}
    .card-grid-3{grid-template-columns:repeat(2,1fr);}
    .feat-strip{grid-template-columns:1fr 1fr;}
    .feat-main{grid-column:1 / -1;min-height:260px;}
    .scene-grid{grid-template-columns:1fr 1fr;}
    .scene-card:first-child{grid-column:1 / -1;}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .cmd-search{width:200px;}
    .nav-links a{padding:8px 8px;font-size:13.5px;}
  }
  @media (max-width:1023px){
    .menu-btn{display:flex;}
    .nav-right .cmd-search,.nav-right .icon-link{display:none;}
    .nav-links{
      position:fixed;top:0;right:0;height:100vh;width:min(320px,86vw);
      flex-direction:column;align-items:stretch;gap:6px;
      padding:84px 20px 32px;z-index:60;overflow-y:auto;
      background:rgba(10,16,24,0.98);
      backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
      border-left:1px solid var(--panel-border);
      transform:translateX(105%);
      transition:transform .3s cubic-bezier(.2,.7,.3,1);
      box-shadow:-20px 0 50px -30px rgba(0,0,0,0.9);
    }
    .nav-links.open{transform:translateX(0);}
    .nav-links a{padding:12px 12px;font-size:15px;}
    .nav-links a.active::after{left:12px;right:auto;width:42px;bottom:4px;}
    .drawer-extra{display:flex;flex-direction:column;gap:14px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line);}
    .drawer-extra .cmd-search{display:flex;width:100%;}
  }
  @media (max-width:768px){
    .container-x{padding:0 20px;}
    .section{padding:56px 0;}
    .cat-hero{padding:38px 22px 30px;}
    .stat-band{grid-template-columns:1fr 1fr;gap:0;}
    .stat-item{padding:16px 14px 16px 0;border-right:0;border-bottom:1px solid var(--line);}
    .stat-item:nth-child(odd){border-right:1px solid var(--line);padding-right:16px;}
    .stat-item:nth-last-child(-n+2){border-bottom:0;}
    .split-grid{grid-template-columns:1fr;}
    .card-grid-3{grid-template-columns:1fr;}
    .feat-strip{grid-template-columns:1fr;}
    .scene-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:26px;}
    .cta-band{padding:30px 24px;}
    .footer-top{padding:22px;}
    .panel-card{padding:24px;}
  }
  @media (max-width:520px){
    .cat-hero h1{font-size:26px;}
    .stat-band{grid-template-columns:1fr;}
    .stat-item{border-right:0 !important;padding-right:0 !important;}
    .stat-item:last-child{border-bottom:0;}
    .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%;}
    .cta-actions{width:100%;}
    .cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%;}
    .brand-text{font-size:15px;}
  }