/* roulang page: index */
:root{
  --bg-page:#060A13;
  --bg-deep:#080F1C;
  --bg-panel:rgba(15,23,42,0.55);
  --bg-panel-2:rgba(15,23,42,0.78);
  --border-glass:rgba(125,190,255,0.18);
  --line-soft:rgba(148,178,220,0.12);
  --text-hi:#EDF3FF;
  --text-mid:#9DAEC4;
  --text-low:#697B94;
  --cyan:#00D6A3;
  --blue:#2B6FF3;
  --gold:#F0B63A;
  --danger:#F25C54;
  --cyan-glow:rgba(0,214,163,0.35);
  --blue-glow:rgba(43,111,243,0.40);
  --radius-lg:18px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-float:0 12px 30px rgba(0,0,0,0.35);
  --shadow-hover:0 0 0 1px rgba(0,214,163,0.25), 0 16px 40px rgba(3,10,20,0.5);
  --transition:all .28s ease;
  --font-sans:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --side-w:248px;
  --section-gap:clamp(72px,9vw,130px);
}
html{scroll-padding-top:20px;}
html,body{overflow-x:hidden;}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--bg-page);
  font-family:var(--font-sans);
  color:var(--text-hi);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--cyan);text-decoration:none;transition:var(--transition);}
img{display:block;max-width:100%;border:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
svg{display:inline-block;vertical-align:middle;}
ul,ol,dl,dd,p,h1,h2,h3,h4,h5,h6,figure{margin:0;padding:0;}
h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px;}
body.no-scroll{height:100%;overflow:hidden;}

/* 站点外壳 */
.site-shell{
  min-height:100vh;
  background:
    radial-gradient(circle at 88% 12%,rgba(43,111,243,0.08),transparent 28%),
    linear-gradient(180deg,var(--bg-page),#070D18);
}
.side-nav{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--side-w);
  background:linear-gradient(180deg,#08101C 0%,#060A13 100%);
  border-right:1px solid var(--line-soft);
  display:flex;
  flex-direction:column;
  padding:30px 18px 22px;
  z-index:80;
  backdrop-filter:blur(0);
}
.side-nav:after{
  content:"";
  position:absolute;
  top:0;right:0;bottom:0;left:0;
  background:radial-gradient(circle at 20% 10%,rgba(0,214,163,0.04),transparent 32%);
  pointer-events:none;
}
.site-brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 10px 28px;
  border-bottom:1px solid var(--line-soft);
  margin-bottom:22px;
  position:relative;
  z-index:2;
}
.brand-mark{
  width:42px;height:42px;
  flex:0 0 42px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  border:1px solid rgba(0,214,163,0.4);
  background:linear-gradient(145deg,rgba(0,214,163,0.16),rgba(43,111,243,0.2));
  box-shadow:0 0 16px rgba(0,214,163,0.14), inset 0 1px 0 rgba(255,255,255,0.12);
  font-weight:800;
  font-size:22px;
  color:var(--cyan);
  letter-spacing:-0.02em;
}
.brand-type{
  display:flex;
  flex-direction:column;
  line-height:1.3;
}
.brand-type strong{
  font-size:20px;
  color:var(--text-hi);
  font-weight:800;
  letter-spacing:0.02em;
}
.brand-type small{
  display:flex;
  align-items:center;
  gap:7px;
  font-size:12px;
  color:var(--text-mid);
  letter-spacing:0.18em;
  margin-top:5px;
}
.brand-type small::before{
  content:"";
  width:20px;height:1px;
  background:linear-gradient(90deg,var(--gold),transparent);
}
.nav-main{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:6px;
  position:relative;
  z-index:2;
  flex:1;
}
.nav-link{
  display:flex;
  align-items:center;
  gap:11px;
  min-height:46px;
  padding:0 13px;
  border-radius:10px;
  color:var(--text-mid);
  font-size:15px;
  font-weight:500;
  border:1px solid transparent;
  position:relative;
}
.nav-link .nav-ico{
  width:20px;height:20px;
  flex:0 0 20px;
  opacity:0.75;
  transition:var(--transition);
}
.nav-link:hover{
  background:rgba(125,190,255,0.07);
  color:#fff;
  border-color:rgba(125,190,255,0.1);
}
.nav-link:hover .nav-ico{opacity:1;color:var(--cyan);}
.nav-link.is-active{
  background:linear-gradient(90deg,rgba(0,214,163,0.13),rgba(43,111,243,0.08));
  border-color:rgba(0,214,163,0.25);
  color:#fff;
  font-weight:600;
}
.nav-link.is-active::before{
  content:"";
  position:absolute;
  left:-1px;top:50%;
  width:3px;height:20px;
  border-radius:0 4px 4px 0;
  background:var(--cyan);
  box-shadow:0 0 12px var(--cyan-glow);
  transform:translateY(-50%);
}
.nav-section-title{
  padding:0 14px;
  margin:12px 0 8px;
  font-size:12px;
  color:#5E7089;
  letter-spacing:0.18em;
  position:relative;
  z-index:2;
}
.side-status{
  position:relative;
  z-index:2;
  background:rgba(15,23,42,0.45);
  border:1px solid var(--line-soft);
  border-radius:14px;
  padding:13px 14px;
}
.status-line{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-mid);
}
.pulse-dot{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px var(--cyan-glow);
  flex:0 0 7px;
}
.side-tech-line{
  margin-top:10px;
  font-size:12px;
  color:var(--text-low);
  border-top:1px dashed rgba(125,190,255,0.14);
  padding-top:10px;
  line-height:1.7;
}
.main-wrap{
  margin-left:var(--side-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.main-content{
  flex:1;
}
.md-brand{
  text-decoration:none;
}
.md-title{
  font-size:17px !important;
  font-weight:800;
}
.md-sub{
  display:block;
  font-size:10px !important;
  color:var(--text-mid) !important;
  letter-spacing:0.16em;
}

/* 移动顶部栏 */
.mobile-header{
  display:none;
  position:sticky;
  top:0;
  left:0;
  right:0;
  z-index:100;
  height:64px;
  padding:0 20px;
  background:rgba(6,10,19,0.86);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line-soft);
}
.mobile-header .mobile-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:100%;
}
.mobile-logo{
  display:flex;
  align-items:center;
  gap:9px;
  color:var(--text-hi);
}
.mobile-logo .logo-dot{
  width:32px;height:32px;
  border-radius:10px;
  background:linear-gradient(145deg,rgba(0,214,163,0.3),rgba(43,111,243,0.3));
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  color:var(--cyan);
  font-size:18px;
}
.burger{
  width:42px;height:42px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line-soft);
  background:rgba(255,255,255,0.04);
  cursor:pointer;
}
.burger span,.burger span::before,.burger span::after{
  content:"";
  width:18px;height:2px;
  background:var(--text-hi);
  display:block;
  border-radius:2px;
  transition:var(--transition);
}
.burger span{position:relative;}
.burger span::before{position:absolute;left:0;top:-6px;}
.burger span::after{position:absolute;left:0;top:6px;}
.burger.is-open span{background:transparent;}
.burger.is-open span::before{transform:rotate(45deg);top:0;}
.burger.is-open span::after{transform:rotate(-45deg);top:0;}

/* 全屏移动导航 */
.mobile-drawer{
  position:fixed;
  inset:0;
  background:rgba(4,7,15,0.96);
  backdrop-filter:blur(24px);
  z-index:99;
  padding:86px 26px 30px;
  opacity:0;
  visibility:hidden;
  transition:opacity .3s ease, visibility .3s;
}
.mobile-drawer.is-open{
  opacity:1;
  visibility:visible;
}
.drawer-list{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.drawer-link{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:52px;
  border:1px solid var(--line-soft);
  border-radius:14px;
  padding:0 18px;
  color:var(--text-hi);
  background:rgba(125,190,255,0.05);
}
.drawer-link span{
  font-size:17px;
  font-weight:600;
}
.drawer-link.is-active{
  border-color:rgba(0,214,163,0.4);
  color:var(--cyan);
}
.drawer-range{
  position:absolute;
  bottom:30px;
  left:26px;right:26px;
  color:var(--text-low);
  font-size:13px;
  padding-top:15px;
  border-top:1px solid var(--line-soft);
}

/* 容器 */
.content-wrap{
  max-width:1320px;
  margin:0 auto;
  padding:0 48px;
}

/* Hero */
.hero{
  position:relative;
  min-height:calc(100vh - 64px);
  display:flex;
  align-items:center;
  padding:clamp(60px,8vw,120px) 0;
  background:
    linear-gradient(95deg,#060A13 4%,rgba(7,13,24,0.86) 48%,rgba(6,10,19,0.45) 86%),
    url('/assets/images/backpic/back-1.png') center 28%/cover no-repeat;
  overflow:hidden;
  border-bottom:1px solid var(--line-soft);
}
.hero::before{
  content:"";
  position:absolute;
  right:-10%;
  top:-20%;
  width:480px;height:480px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(0,214,163,0.12),transparent 60%);
  pointer-events:none;
}
.hero-main{
  max-width:860px;
  position:relative;
  z-index:2;
}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:0.2em;
  color:var(--cyan);
  background:rgba(0,214,163,0.1);
  border:1px solid rgba(0,214,163,0.3);
  border-radius:var(--radius-pill);
  padding:6px 14px 6px 10px;
  margin-bottom:22px;
}
.hero-kicker::before{
  content:"";
  width:20px;height:8px;
  background:linear-gradient(90deg,var(--cyan),var(--blue));
  clip-path:polygon(0 50%,100% 0,100% 100%,0 50%);
}
.hero h1{
  font-size:clamp(38px,5vw,66px);
  font-weight:800;
  letter-spacing:-0.02em;
  line-height:1.18;
  color:#fff;
  margin-bottom:22px;
}
.hero h1 .hero-grad{
  background:linear-gradient(90deg,#7CF0DA 0%,#00D6A3 55%,#39B6FF 120%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:clamp(16px,1.5vw,20px);
  line-height:1.9;
  color:var(--text-mid);
  font-weight:400;
  max-width:620px;
  margin-bottom:36px;
}
.hero-actions{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:20px;
}
.hero-mini{
  margin-top:12px;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px 22px;
  color:var(--text-low);
  font-size:13px;
}
.hero-mini span{
  display:flex;
  align-items:center;
  gap:6px;
}
.hero-mini span::before{
  content:"";
  width:4px;height:4px;
  border-radius:50%;
  background:var(--gold);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-pill);
  font-weight:600;
  min-height:48px;
  padding:0 28px;
  font-size:15px;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:var(--transition);
  text-align:center;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);filter:brightness(0.92);}
.btn-primary{
  background:var(--cyan);
  color:#04140F;
  box-shadow:0 0 22px var(--cyan-glow), 0 7px 16px rgba(0,0,0,0.25);
}
.btn-primary:hover{box-shadow:0 0 34px rgba(0,214,163,0.55),0 8px 22px rgba(0,0,0,0.3);}
.btn-outline{
  border-color:rgba(125,190,255,0.35);
  background:rgba(125,190,255,0.06);
  color:var(--text-hi);
}
.btn-outline:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(0,214,163,0.08);box-shadow:0 0 22px rgba(0,214,163,0.15);}
.btn-gold{
  background:linear-gradient(90deg,#F0B63A,#D99823);
  color:#1D1603;
  box-shadow:0 0 22px rgba(240,182,58,0.20);
}
.btn-gold:hover{box-shadow:0 0 32px rgba(240,182,58,0.4);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--text-mid);
  font-weight:500;
}
.link-arrow:hover{color:var(--cyan);}
.link-arrow svg{width:17px;height:17px;transition:var(--transition);}
.link-arrow:hover svg{transform:translateX(4px);}

/* 统一样式 */
.section{
  padding:var(--section-gap) 0;
  position:relative;
}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:0.2em;
  color:var(--cyan);
  margin-bottom:14px;
  font-weight:600;
}
.section-eyebrow::before{
  content:"";
  width:26px;height:1px;
  background:var(--cyan);
}
.layout-title{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:clamp(36px,5vw,64px);flex-wrap:wrap;}
.layout-title h2, .layout-title .sub-title{font-size:clamp(25px,3vw,38px);color:var(--text-hi);font-weight:800;letter-spacing:-0.02em;max-width:720px;}
.layout-title p{max-width:360px;color:var(--text-mid);font-size:15px;line-height:1.9;}
.more-link{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-weight:500;font-size:15px;}

/* 品牌模块 */
.about-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,0.95fr);
  gap:clamp(32px,5vw,80px);
  align-items:center;
}
.about-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--border-glass);
  box-shadow:var(--shadow-float);
  height:480px;
  background:var(--bg-panel);
}
.about-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(12deg,#060A13 0%,rgba(6,10,19,0.45) 38%,transparent 70%);
}
.media-card-text{
  position:absolute;
  left:24px;right:24px;bottom:22px;
  color:#fff;
}
.media-card-text .mc-label{
  display:inline-block;
  font-size:12px;
  letter-spacing:0.16em;
  color:var(--gold);
  border:1px solid rgba(240,182,58,0.4);
  border-radius:var(--radius-pill);
  padding:3px 12px;
  background:rgba(6,10,19,0.4);
  margin-bottom:10px;
}
.media-card-text h3{font-size:21px;font-weight:700;}
.media-card-text p{color:rgba(255,255,255,0.75);font-size:14px;margin-top:6px;}
.about-content h2{
  font-size:clamp(25px,3vw,36px);
  font-weight:800;
  line-height:1.3;
  color:#fff;
  margin-bottom:20px;
}
.about-content p{
  color:var(--text-mid);
  margin-bottom:18px;
  font-size:16px;
  line-height:2;
}
.about-list{
  list-style:none;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px 22px;
  margin:30px 0 36px;
}
.about-list li{
  display:flex;
  gap:11px;
  align-items:flex-start;
  color:var(--text-hi);
  font-size:15px;
  line-height:1.7;
}
.about-list li svg{
  flex:0 0 auto;
  width:20px;height:20px;
  color:var(--cyan);
  margin-top:2px;
}
.about-list span strong{display:block;font-weight:600;color:#F3F8FF;}
.about-list span small{color:var(--text-low);font-size:13px;line-height:1.5;display:block;margin-top:3px;}

/* 内容精选 / Bento */
.bento{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.bento-card{
  background:var(--bg-panel);
  border:1px solid var(--border-glass);
  border-radius:var(--radius-lg);
  overflow:hidden;
  position:relative;
  backdrop-filter:blur(14px);
  box-shadow:0 12px 35px rgba(0,0,0,0.22);
  transition:var(--transition);
}
.bento-card a{
  display:flex;
  flex-direction:column;
  height:100%;
  color:var(--text-hi);
}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(0,214,163,0.35);}
.bento-card .bento-pic{
  height:220px;
  overflow:hidden;
  position:relative;
  background:var(--bg-deep);
}
.bento-card .bento-pic img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease;}
.bento-card:hover .bento-pic img{transform:scale(1.04);}
.bento-pic::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(7,13,24,0.35));}
.bento-cat{
  position:absolute;
  left:18px;top:16px;
  z-index:3;
  font-size:12px;
  color:#C7F6E7;
  background:rgba(6,10,19,0.55);
  border:1px solid rgba(0,214,163,0.45);
  padding:4px 13px;
  border-radius:999px;
  letter-spacing:0.05em;
  backdrop-filter:blur(8px);
}
.bento-body{padding:24px 26px 28px;display:flex;flex-direction:column;flex:1;}
.bento-body h3{font-size:22px;font-weight:700;margin-bottom:12px;color:#fff;}
.bento-body p{color:var(--text-mid);flex:1;font-size:15px;line-height:1.9;}
.bento-foot{display:flex;justify-content:space-between;align-items:center;margin-top:20px;color:var(--text-low);font-size:14px;}
.bento-foot strong{color:var(--cyan);font-weight:600;}
.bento-mini{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:14px 0 8px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:5px;
  font-size:13px;
  background:rgba(125,190,255,0.08);
  border:1px solid var(--line-soft);
  border-radius:999px;
  color:#BCCEE7;
  padding:4px 12px;
}
.chip:before{content:"/";color:var(--gold);font-weight:800;margin-right:2px;}

/* 最近资讯区 */
.news-ballot{
  background:
    linear-gradient(180deg,rgba(9,18,33,0.55),rgba(6,10,19,0.4));
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.news-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.news-card{
  height:100%;
  background:rgba(8,16,30,0.42);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-lg);
  padding:24px;
  transition:var(--transition);
  display:flex;
  flex-direction:column;
}
.news-card:hover{
  transform:translateY(-4px);
  background:rgba(10,20,36,0.65);
  border-color:rgba(0,214,163,0.35);
  box-shadow:0 0 0 1px rgba(0,214,163,0.12),0 16px 30px rgba(0,0,0,0.2);
}
.news-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;}
.news-tag{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  color:var(--cyan);
  background:rgba(0,214,163,0.1);
  border-radius:var(--radius-pill);
  padding:4px 12px;
  border:1px solid rgba(0,214,163,0.26);
  letter-spacing:0.04em;
}
.news-date{font-size:13px;color:var(--text-low);display:flex;align-items:center;gap:6px;}
.news-card h3{font-size:19px;line-height:1.55;color:#F6FBFF;font-weight:700;margin-bottom:12px;}
.news-card h3 a{color:inherit;}
.news-card h3 a:hover{color:var(--cyan);}
.news-card p{color:var(--text-mid);font-size:15px;line-height:1.9;flex:1;}
.news-more{
  margin-top:20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  border-top:1px dashed rgba(125,190,255,0.14);
  padding-top:14px;
}
.read-link{color:var(--cyan);font-weight:600;}
.read-link:hover{color:#7CF0DA;}
.read-link svg{width:16px;height:16px;}
.news-empty{
  border:1px dashed rgba(125,190,255,0.26);
  background:rgba(125,190,255,0.03);
  border-radius:var(--radius-lg);
  padding:50px 30px;
  text-align:center;
  color:var(--text-low);
  font-size:15px;
  min-height:220px;
  display:flex;
  flex-direction:column;
  gap:14px;
  justify-content:center;
  align-items:center;
}
.news-empty svg{width:42px;height:42px;color:#5B7392;}
.foot-action{
  display:flex;
  justify-content:center;
  margin-top:36px;
}

/* 信任商标 */
.trust-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.trust-card{
  background:linear-gradient(160deg,rgba(125,190,255,0.06),rgba(15,23,42,0.3));
  border:1px solid var(--line-soft);
  border-radius:18px;
  padding:22px 20px;
  position:relative;
  transition:var(--transition);
  overflow:hidden;
}
.trust-card:before{
  content:attr(data-num);
  position:absolute;
  right:10px;top:2px;
  font-size:58px;
  font-family:"DIN Alternate","Arial Narrow",sans-serif;
  font-weight:800;
  opacity:0.12;
  color:var(--gold);
  line-height:1;
}
.trust-card:hover{transform:translateY(-4px);border-color:rgba(0,214,163,0.4);}
.trust-ico{
  width:42px;height:42px;
  border-radius:13px;
  border:1px solid rgba(255,255,255,0.18);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--cyan);
  background:rgba(0,214,163,0.08);
  margin-bottom:16px;
}
.trust-ico svg{width:22px;height:22px;}
.trust-card h3{font-size:16px;color:#E9F2FF;margin-bottom:7px;font-weight:600;}
.trust-card p{color:var(--text-low);font-size:13px;line-height:1.75;}

/* FAQ */
.faq-section{
  background:
    linear-gradient(180deg,transparent,rgba(8,16,30,0.72)),
    radial-gradient(circle at 15% 80%,rgba(0,214,163,0.04),transparent 30%);
}
.faq-question{
  color:var(--text-hi);
  border-top:1px solid var(--line-soft);
}
.faq-item{
  border-bottom:1px solid var(--line-soft);
}
.faq-hd{
  display:flex;
  justify-content:space-between;
  gap:20px;
  align-items:center;
  cursor:pointer;
  padding:23px 0;
  min-height:70px;
}
.faq-hd h3{
  font-size:16px;
  font-weight:600;
  margin:0;
  color:var(--text-hi);
  transition:var(--transition);
}
.faq-hd:hover h3{color:var(--cyan);}
.faq-hd .faq-icon{
  position:relative;
  width:22px;height:22px;
  flex:0 0 22px;
}
.faq-hd .faq-icon:before,.faq-hd .faq-icon:after{
  content:"";
  position:absolute;
  background:var(--cyan);
  border-radius:2px;
  transition:var(--transition);
}
.faq-hd .faq-icon:before{width:22px;height:1px;left:0;top:50%;transform:translateY(-50%);}
.faq-hd .faq-icon:after{height:22px;width:1px;bottom:0;left:50%;transform:translateX(-50%);}
.faq-item.is-open .faq-hd .faq-icon:after{transform:translateX(-50%) rotate(90deg);opacity:0;}
.faq-item .faq-ans{
  max-height:0;
  overflow:hidden;
  transition:max-height .45s ease;
}
.faq-ans-inner{
  padding:0 55px 24px 0;
  color:var(--text-mid);
  font-size:15px;
  line-height:1.95;
}
.faq-ans-inner p{margin-bottom:8px;}

/* CTA 订阅 */
.cta-band{
  padding:var(--section-gap) 0;
}
.cta-box{
  position:relative;
  padding:48px clamp(22px,5vw,70px);
  background:
    linear-gradient(105deg,rgba(6,13,25,0.94),rgba(12,25,46,0.76)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat fixed;
  border:1px solid rgba(125,190,255,0.22);
  box-shadow:0 26px 70px rgba(0,0,0,0.42);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:42px;
  border-radius:24px;
  overflow:hidden;
}
.cta-box:before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:1px;
  background:linear-gradient(180deg,transparent,var(--gold),transparent);
  box-shadow:0 0 18px rgba(240,182,58,0.5);
}
.cta-box:after{
  content:"";
  position:absolute;
  right:-120px;bottom:-120px;
  width:300px;height:300px;
  border-radius:50%;
  background:rgba(0,214,163,0.10);
  filter:blur(30px);
  pointer-events:none;
}
.cta-left{max-width:470px;position:relative;z-index:2;}
.cta-left h2{font-size:clamp(23px,3vw,32px);color:#fff;font-weight:700;line-height:1.45;margin-bottom:18px;}
.cta-left p{color:var(--text-mid);line-height:1.9;}
.cta-right{flex:0 1 440px;position:relative;z-index:2;width:100%;}
.subscribe-form{
  background:rgba(6,11,21,0.76);
  border:1px solid rgba(125,190,255,0.20);
  padding:26px;
  border-radius:18px;
  backdrop-filter:blur(10px);
}
.form-label{
  display:block;
  font-size:13px;
  color:#B6C7E0;
  font-weight:600;
  margin-bottom:9px;
}
.form-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.form-row input{
  flex:1;
  min-width:190px;
  height:50px;
  border-radius:var(--radius-pill);
  background:rgba(0,0,0,0.35);
  border:1px solid rgba(148,178,220,0.28);
  padding:0 20px;
  color:#fff;
  font-size:14px;
}
.form-row input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,214,163,0.25);outline:none;}
.form-row input::placeholder{color:#7085A3;}
.form-note{margin-top:15px;color:var(--text-low);font-size:12px;display:flex;align-items:center;gap:6px;}

/* 页脚 */
.site-footer{
  background:#060A13;
  border-top:1px solid var(--line-soft);
  position:relative;
}
.footer-main{
  display:grid;
  grid-template-columns:1.4fr 0.7fr 1fr;
  gap:50px;
  padding:70px 0 44px;
}
.footer-brand p{color:var(--text-low);font-size:14px;line-height:2;}
.footer-brand .brand-line{
  display:flex;
  align-items:center;
  gap:11px;
  margin-bottom:22px;
}
.footer-brand .brand-line strong{font-size:20px;color:var(--text-hi);}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text-hi);
  margin-bottom:22px;
  letter-spacing:0.08em;
}
.footer-col ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.footer-col a{
  color:var(--text-mid);
  font-size:14px;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.footer-col a:hover{color:var(--cyan);}
.footer-col a:before{content:"";width:4px;height:4px;border-radius:50%;background:#51647D;}
.footer-col a:hover:before{background:var(--cyan);}
.footer-bottom{
  border-top:1px solid rgba(125,190,255,0.1);
  padding:18px 0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-low);
}
.footer-bottom a{color:var(--text-low);}
.footer-bottom .footer-safe{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
}

/* 响应式 */
@media (max-width:1100px){
  .feature-grid{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .about-grid{grid-template-columns:1fr;}
  .about-media{height:420px;}
}
@media (max-width:840px){
  .side-nav{display:none;}
  .mobile-header{display:block;}
  .main-wrap{margin-left:0;}
  .content-wrap{padding:0 20px;}
  .news-grid{grid-template-columns:1fr;}
  .hero{min-height:auto;}
  .about-list{grid-template-columns:1fr 1fr;}
  .footer-main{grid-template-columns:1fr 1fr;padding:50px 0 34px;}
  .footer-col:first-child{grid-column:1/-1;}
  .cta-box{flex-direction:column;align-items:stretch;}
  .form-row{flex-direction:column;}
  .form-row input{min-width:0;}
}
@media (max-width:600px){
  .content-wrap{padding:0 16px;}
  .hero h1{font-size:36px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{flex:1;}
  .brand-type strong{font-size:18px;}
  .about-grid{grid-template-columns:1fr;}
  .about-media{height:340px;}
  .about-list{grid-template-columns:1fr;}
  .layout-title{flex-direction:column;align-items:flex-start;gap:14px;}
  .bento-grid{grid-template-columns:1fr;}
  .cta-left h2{font-size:24px;}
  .footer-main{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
}
@media (min-width:841px) and (max-width:1200px){
  .about-grid{grid-template-columns:1.25fr 0.75fr;}
  .bento-grid{grid-template-columns:repeat(2,1fr);}
}

/* 动画 */
@keyframes floatY{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-10px);}
}
@media (prefers-reduced-motion: reduce){
  *,*:before,*:after{animation:none !important;transition:none !important;}
}

/* roulang page: category1 */
:root {
    --bg: #060A13;
    --bg2: #0B1322;
    --bg3: #0E1824;
    --panel: rgba(15, 23, 42, 0.55);
    --panel-solid: #111C2C;
    --stroke: rgba(125, 190, 255, 0.18);
    --stroke-strong: rgba(125, 190, 255, 0.3);
    --text: #EDF3FF;
    --text2: #9DAEC4;
    --text3: #64748B;
    --cyan: #00D6A3;
    --blue: #2B6FF3;
    --gold: #F0B63A;
    --danger: #F25C54;
    --cyan-glow: rgba(0, 214, 163, 0.35);
    --blue-glow: rgba(43, 111, 243, 0.4);
    --radius-xl: 18px;
    --radius-md: 12px;
    --radius-pill: 999px;
    --shadow-static: 0 12px 30px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 0 0 1px rgba(0, 214, 163, 0.25), 0 16px 40px rgba(3, 10, 20, 0.5);
    --font-sans: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    --font-digit: "Rajdhani", "DIN Alternate", "Barlow Condensed", "Arial Narrow", sans-serif;
    --transition: 0.3s ease;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
  }

  body.nav-open {
    overflow: hidden;
  }

  h1,
  h2,
  h3,
  h4,
  p,
  ul,
  ol,
  figure {
    margin: 0;
    padding: 0;
  }

  ul,
  ol {
    list-style: none;
  }

  img {
    display: block;
    max-width: 100%;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  button,
  input {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
  }

  ::selection {
    background: rgba(0, 214, 163, 0.25);
    color: #fff;
  }

  :focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
    border-radius: 4px;
  }

  .content-wrap {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 48px;
    padding-right: 48px;
  }

  .main-body {
    margin-left: 248px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background:
      radial-gradient(ellipse 70% 40% at 80% 0%, rgba(43, 111, 243, 0.06), transparent 70%),
      radial-gradient(ellipse 40% 30% at 30% 80%, rgba(0, 214, 163, 0.04), transparent 70%),
      var(--bg);
  }

  .page-main {
    flex: 1;
  }

  /* 左侧导航 */
  .side-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 248px;
    height: 100vh;
    z-index: 300;
    display: flex;
    flex-direction: column;
    padding: 30px 18px 22px 22px;
    background: linear-gradient(180deg, #091120 0%, #070D18 100%);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
  }

  .brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 42px;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 13px;
    flex: 0 0 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-digit);
    font-weight: 700;
    font-size: 24px;
    background: linear-gradient(145deg, rgba(0, 214, 163, 0.18), rgba(43, 111, 243, 0.12));
    color: var(--cyan);
    border: 1px solid rgba(0, 214, 163, 0.3);
    letter-spacing: 0.01em;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
  }

  .brand-name {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
  }

  .brand-name strong {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--text);
  }

  .brand-name span {
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--gold);
    margin-top: 3px;
    font-weight: 500;
  }

  .side-nav-main {
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .nav-section-label {
    font-size: 12px;
    color: var(--text3);
    letter-spacing: 0.14em;
    padding: 0 12px 12px;
    text-transform: uppercase;
  }

  .nav-main {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 13px;
    border-radius: 10px;
    color: var(--text2);
    font-size: 15px;
    font-weight: 500;
    border: 1px solid transparent;
    transition: all var(--transition);
    position: relative;
  }

  .nav-ico {
    width: 19px;
    height: 19px;
    flex: 0 0 19px;
    opacity: 0.75;
    transition: all var(--transition);
  }

  .nav-link:hover {
    background: rgba(125, 190, 255, 0.06);
    color: #ffffff;
  }

  .nav-link:hover .nav-ico {
    opacity: 1;
  }

  .nav-link.is-active,
  .nav-link[aria-current="page"] {
    color: #ffffff;
    background: linear-gradient(90deg, rgba(0, 214, 163, 0.12), rgba(43, 111, 243, 0.06));
    border-color: rgba(0, 214, 163, 0.14);
  }

  .nav-link.is-active::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 18%;
    bottom: 18%;
    width: 3px;
    border-radius: var(--radius-pill);
    background: var(--cyan);
    box-shadow: 0 0 12px var(--cyan-glow);
  }

  .nav-link.is-active .nav-ico {
    color: var(--cyan);
    opacity: 1;
  }

  .side-nav-foot {
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 18px;
  }

  .side-nav-foot p {
    font-size: 12px;
    color: var(--text3);
    line-height: 1.6;
    margin-bottom: 8px;
  }

  .side-nav-foot a {
    font-size: 13px;
    color: var(--text2);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition);
  }

  .side-nav-foot a:hover {
    color: var(--cyan);
  }

  .mobile-top {
    display: none;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 600;
    padding: 14px 28px;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
    user-select: none;
  }

  .btn i {
    font-size: 13px;
    transition: transform var(--transition);
  }

  .btn-primary {
    background: linear-gradient(135deg, #00D6A3 0%, #00c9a0 100%);
    color: #05110F;
    box-shadow: 0 0 22px rgba(0, 214, 163, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  }

  .btn-primary:hover {
    box-shadow: 0 0 32px rgba(0, 214, 163, 0.45), 0 8px 28px rgba(0, 0, 0, 0.35);
    transform: translateY(-2px);
  }

  .btn-primary:active {
    transform: translateY(0);
    filter: brightness(0.95);
  }

  .btn-outline {
    background: rgba(16, 27, 45, 0.55);
    border-color: rgba(125, 190, 255, 0.24);
    color: var(--text);
    backdrop-filter: blur(10px);
  }

  .btn-outline:hover {
    border-color: rgba(0, 214, 163, 0.55);
    color: var(--cyan);
    box-shadow: inset 0 0 20px rgba(0, 214, 163, 0.03);
  }

  /* Hero capsule */
  .cat-hero {
    position: relative;
    padding: 80px 0 92px;
    background:
      linear-gradient(100deg, rgba(6, 10, 19, 0.98) 10%, rgba(6, 10, 19, 0.88) 55%, rgba(9, 17, 30, 0.7) 100%),
      url("/assets/images/backpic/back-1.png") center / cover no-repeat;
    border-bottom: 1px solid rgba(125, 190, 255, 0.1);
  }

  .cat-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(125, 190, 255, 0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(125, 190, 255, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 100% at 20% 40%, #000 0%, transparent 80%);
    pointer-events: none;
  }

  .cat-hero .content-wrap {
    position: relative;
    z-index: 2;
  }

  .cat-hero-grid {
    display: grid;
    grid-template-columns: 1.16fr 0.84fr;
    gap: 72px;
    align-items: center;
  }

  .cat-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 13px;
    color: var(--text3);
    margin-bottom: 22px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 5px 14px;
    border-radius: var(--radius-pill);
  }

  .cat-breadcrumb a {
    color: var(--text2);
    transition: all var(--transition);
  }

  .cat-breadcrumb a:hover {
    color: var(--cyan);
  }

  .cat-breadcrumb svg {
    width: 12px;
    height: 12px;
    opacity: 0.6;
  }

  .cat-breadcrumb span {
    font-weight: 500;
  }

  .kicker-badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--text2);
    margin-bottom: 18px;
    background: rgba(0, 214, 163, 0.08);
    border: 1px solid rgba(0, 214, 163, 0.16);
    padding: 7px 16px;
    border-radius: var(--radius-pill);
  }

  .kicker-badge .live-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 10px var(--cyan-glow);
  }

  .page-h1 {
    font-size: clamp(38px, 5vw, 60px);
    line-height: 1.18;
    font-weight: 800;
    letter-spacing: -0.01em;
    margin: 0 0 22px;
  }

  .page-h1 .grad-text {
    background: linear-gradient(100deg, #00D6A3, #53E1FF 70%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .hero-lead {
    max-width: 58ch;
    font-size: 17px;
    line-height: 2;
    color: var(--text2);
    margin-bottom: 34px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
  }

  .hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text2);
    background: rgba(12, 22, 38, 0.6);
    border: 1px solid rgba(125, 190, 255, 0.12);
    border-radius: var(--radius-pill);
    padding: 5px 12px;
  }

  .hero-tag i {
    color: var(--cyan);
    font-size: 10px;
  }

  .hero-media {
    position: relative;
  }

  .media-frame {
    border-radius: 22px;
    overflow: hidden;
    border: 1px solid rgba(125, 190, 255, 0.16);
    background: var(--panel);
    box-shadow: var(--shadow-static);
    position: relative;
  }

  .media-frame img {
    width: 100%;
    height: 380px;
    object-fit: cover;
  }

  .media-frame::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(200deg, transparent 40%, rgba(6, 10, 19, 0.55));
    pointer-events: none;
  }

  .float-index {
    position: absolute;
    left: 28px;
    bottom: 24px;
    z-index: 3;
    background: rgba(8, 15, 27, 0.72);
    border: 1px solid rgba(125, 190, 255, 0.18);
    backdrop-filter: blur(14px);
    border-radius: 14px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 13px;
    color: var(--text);
    box-shadow: 0 12px 26px rgba(0, 0, 0, 0.35);
  }

  .float-index .fi-icon {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 214, 163, 0.14);
    border: 1px solid rgba(0, 214, 163, 0.25);
    color: var(--cyan);
    font-size: 14px;
  }

  .float-index strong {
    display: block;
    font-size: 14px;
    line-height: 1.4;
  }

  .float-index span {
    font-size: 12px;
    color: var(--text2);
    line-height: 1.4;
  }

  /* section */
  .section {
    padding: clamp(70px, 9vw, 130px) 0;
  }

  .section + .section {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
  }

  .section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--cyan);
    text-transform: uppercase;
    margin-bottom: 14px;
  }

  .section-kicker::before {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--cyan);
    opacity: 0.7;
  }

  .section-title {
    font-size: clamp(28px, 3.6vw, 40px);
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -0.015em;
    margin-bottom: 18px;
    max-width: 20ch;
  }

  .section-desc {
    color: var(--text2);
    font-size: 16px;
    max-width: 60ch;
    line-height: 2;
  }

  .split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
  }

  .split-grid.rev .split-content {
    order: 2;
  }

  .split-grid.rev .split-media {
    order: 1;
  }

  .split-media {
    position: relative;
  }

  .split-media img {
    width: 100%;
    border-radius: 22px;
    border: 1px solid rgba(125, 190, 255, 0.16);
    box-shadow: var(--shadow-static);
  }

  .media-badge {
    position: absolute;
    left: -18px;
    top: -18px;
    width: 66px;
    height: 66px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #0E1C2B;
    border: 1px solid rgba(0, 214, 163, 0.25);
    border-radius: 18px;
    color: var(--cyan);
    font-family: var(--font-digit);
    font-weight: 700;
  }

  .media-badge span {
    font-size: 12px;
    letter-spacing: 0.08em;
  }

  .media-badge i {
    font-size: 22px;
  }

  .content-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-top: 30px;
  }

  .content-list li {
    display: flex;
    align-items: flex-start;
    gap: 11px;
    color: var(--text2);
    font-size: 15px;
    line-height: 1.7;
  }

  .content-list li i {
    color: var(--cyan);
    margin-top: 5px;
    font-size: 13px;
    flex-shrink: 0;
  }

  .gold-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-top: 38px;
  }

  .gold-divider .line {
    width: 80px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(240, 182, 58, 0.6), transparent);
  }

  .gold-divider .diamond {
    width: 7px;
    height: 7px;
    transform: rotate(45deg);
    background: rgba(240, 182, 58, 0.9);
    box-shadow: 0 0 8px rgba(240, 182, 58, 0.35);
  }

  /* coverage cards */
  .coverage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    margin-top: 60px;
  }

  .coverage-card {
    background: linear-gradient(160deg, rgba(15, 23, 42, 0.58), rgba(9, 16, 30, 0.72));
    border: 1px solid rgba(125, 190, 255, 0.13);
    border-radius: var(--radius-xl);
    padding: 28px 24px 26px;
    position: relative;
    transition: all var(--transition);
    overflow: hidden;
  }

  .coverage-card::before {
    content: "";
    position: absolute;
    right: -30px;
    top: -30px;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 214, 163, 0.08), transparent);
    pointer-events: none;
  }

  .coverage-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 214, 163, 0.28);
    box-shadow: var(--shadow-hover);
  }

  .cc-icon {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    background: rgba(0, 214, 163, 0.1);
    border: 1px solid rgba(0, 214, 163, 0.2);
    color: var(--cyan);
    font-size: 18px;
    margin-bottom: 18px;
  }

  .cc-num {
    position: absolute;
    right: 20px;
    top: 18px;
    font-family: var(--font-digit);
    font-size: 34px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.05);
    line-height: 1;
  }

  .coverage-card h3 {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 8px;
  }

  .coverage-card p {
    font-size: 14px;
    color: var(--text2);
    line-height: 1.85;
  }

  /* flow */
  .steps-wrapper {
    background: rgba(10, 17, 30, 0.66);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .steps-section {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    padding: 70px 0 74px;
  }

  .step-col {
    position: relative;
    padding: 10px 34px 0;
  }

  .step-col + .step-col::before {
    content: "";
    position: absolute;
    left: 0;
    top: 18px;
    bottom: 18px;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(0, 214, 163, 0.4), transparent);
  }

  .step-index {
    font-family: var(--font-digit);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--gold);
    display: block;
    margin-bottom: 8px;
  }

  .step-col h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
  }

  .step-col p {
    font-size: 15px;
    color: var(--text2);
    line-height: 1.85;
    max-width: 34ch;
  }

  /* browsing guide horizontal cards */
  .reading-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 54px;
  }

  .reading-card {
    display: flex;
    align-items: stretch;
    background: var(--panel-solid);
    border: 1px solid rgba(125, 190, 255, 0.12);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition);
  }

  .reading-card:hover {
    border-color: rgba(0, 214, 163, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }

  .reading-card .rc-img {
    width: 46%;
    min-height: 200px;
    overflow: hidden;
    position: relative;
  }

  .reading-card .rc-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .reading-card .rc-img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent 70%, rgba(6, 10, 19, 0.5));
  }

  .reading-card .rc-body {
    flex: 1;
    padding: 26px 24px;
    display: flex;
    flex-direction: column;
  }

  .rc-type {
    font-size: 12px;
    color: var(--cyan);
    font-weight: 600;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .rc-body h3 {
    font-size: 18px;
    line-height: 1.5;
    font-weight: 600;
    margin-bottom: 10px;
  }

  .rc-body p {
    font-size: 14px;
    color: var(--text2);
    line-height: 1.8;
    flex: 1;
    margin-bottom: 18px;
  }

  .rc-linkmore {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    transition: color var(--transition);
  }

  .rc-linkmore i {
    transition: transform var(--transition);
    font-size: 12px;
  }

  .reading-card:hover .rc-linkmore {
    color: var(--cyan);
  }

  .reading-card:hover .rc-linkmore i {
    transform: translateX(5px);
  }

  /* cross note + band */
  .assure-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 50px;
  }

  .assure-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: rgba(9, 16, 27, 0.7);
    border: 1px solid rgba(125, 190, 255, 0.08);
    padding: 18px 20px;
    border-radius: 14px;
  }

  .assure-icon {
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(43, 111, 243, 0.12);
    border: 1px solid rgba(43, 111, 243, 0.2);
    color: #5A9BFD;
    display: inline-flex;
    flex-shrink: 0;
    font-size: 15px;
  }

  .assure-item strong {
    display: block;
    font-size: 16px;
    margin-bottom: 4px;
  }

  .assure-item span {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text2);
  }

  .cross-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-top: 44px;
    border: 1px solid rgba(240, 182, 58, 0.18);
    background: linear-gradient(110deg, rgba(240, 182, 58, 0.06), rgba(0, 214, 163, 0.03));
    padding: 28px 32px;
    border-radius: 18px;
  }

  .cross-cta h3 {
    font-size: 19px;
    font-weight: 600;
  }

  .cross-cta p {
    color: var(--text2);
    font-size: 14px;
    margin-top: 4px;
  }

  .cross-cta a {
    white-space: nowrap;
  }

  /* faq */
  .faq-layout {
    display: grid;
    grid-template-columns: 0.32fr 0.68fr;
    gap: 54px;
  }

  .faq-aside .section-desc {
    font-size: 15px;
  }

  .faq-wrap {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .faq-item {
    background: rgba(12, 21, 35, 0.48);
    border: 1px solid rgba(125, 190, 255, 0.11);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition);
  }

  .faq-item:hover {
    border-color: rgba(125, 190, 255, 0.22);
  }

  .faq-item summary {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 22px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    list-style: none;
    transition: color 0.2s;
    user-select: none;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary .faq-no {
    font-family: var(--font-digit);
    color: var(--cyan);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
    opacity: 0.7;
    flex-shrink: 0;
  }

  .faq-item summary .faq-icon {
    margin-left: auto;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(125, 190, 255, 0.2);
    color: var(--text2);
    transition: transform 0.3s ease, background 0.3s ease;
    font-size: 11px;
    flex-shrink: 0;
  }

  .faq-item[open] {
    border-color: rgba(0, 214, 163, 0.24);
    background: rgba(10, 21, 30, 0.72);
  }

  .faq-item[open] summary {
    color: var(--cyan);
  }

  .faq-item[open] summary .faq-icon {
    transform: rotate(45deg);
    background: rgba(0, 214, 163, 0.15);
    color: var(--cyan);
  }

  .faq-answer {
    padding: 0 22px 20px 62px;
    color: var(--text2);
    font-size: 14px;
    line-height: 1.9;
  }

  /* cta */
  .cta-panel-wrap {
    padding: 0 0 100px;
  }

  .cta-panel {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    padding: 64px 70px;
    display: flex;
    align-items: center;
    gap: 50px;
    background:
      linear-gradient(94deg, rgba(6, 13, 24, 0.95), rgba(24, 41, 64, 0.75)),
      url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
    border: 1px solid rgba(125, 190, 255, 0.13);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  }

  .cta-left {
    flex: 1;
  }

  .cta-left .section-kicker {
    color: var(--gold);
  }

  .cta-left .section-kicker::before {
    background: var(--gold);
  }

  .cta-left h2 {
    font-size: clamp(24px, 3vw, 34px);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
  }

  .cta-left p {
    color: var(--text2);
    max-width: 42ch;
    line-height: 1.9;
    font-size: 15px;
  }

  .cta-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-shrink: 0;
  }

  .btn-light {
    background: #fff;
    color: #0A1620;
    border: none;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  }

  .btn-light:hover {
    background: #E7F7F1;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  }

  /* footer */
  .site-footer {
    background: #060D18;
    border-top: 1px solid rgba(125, 190, 255, 0.09);
    padding: 60px 0 28px;
  }

  .site-footer .content-wrap {
    max-width: calc(1280px + 96px);
    padding-left: 48px;
    padding-right: 48px;
  }

  .footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 38px;
  }

  .brand-line {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 19px;
    margin-bottom: 16px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 11px;
    color: var(--cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 214, 163, 0.12);
    border: 1px solid rgba(0, 214, 163, 0.23);
    font-size: 20px;
    font-weight: 700;
    font-family: var(--font-digit);
  }

  .footer-brand p:not(.brand-line) {
    color: var(--text3);
    font-size: 14px;
    line-height: 1.9;
    max-width: 40ch;
  }

  .footer-col h4 {
    font-size: 15px;
    color: #fff;
    margin-bottom: 18px;
    font-weight: 600;
  }

  .footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 11px;
  }

  .footer-col a {
    color: var(--text3);
    font-size: 14px;
    transition: all var(--transition);
  }

  .footer-col a:hover {
    color: var(--cyan);
  }

  .footer-bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 24px;
    font-size: 13px;
    color: var(--text3);
  }

  .footer-safe {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
  }

  .footer-safe a {
    color: var(--text3);
    transition: color var(--transition);
  }

  .footer-safe a:hover {
    color: var(--cyan);
  }

  /* responsive ===== */
  @media (max-width: 1180px) {
    .content-wrap {
      padding-left: 32px;
      padding-right: 32px;
    }
    .cat-hero-grid {
      gap: 44px;
    }
    .coverage-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .faq-layout {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }

  @media (max-width: 900px) {
    .split-grid {
      grid-template-columns: 1fr;
      gap: 48px;
    }
    .split-grid.rev .split-content {
      order: 1;
    }
    .split-grid.rev .split-media {
      order: 2;
    }
    .split-content {
      max-width: 100%;
    }
    .reading-grid {
      grid-template-columns: 1fr;
    }
    .steps-section {
      grid-template-columns: 1fr;
      gap: 38px;
    }
    .step-col + .step-col::before {
      display: none;
    }
    .step-col {
      padding: 0;
    }
    .assure-row {
      grid-template-columns: 1fr;
    }
    .cta-panel {
      flex-direction: column;
      align-items: flex-start;
    }
    .cta-actions {
      flex-direction: row;
      flex-wrap: wrap;
    }
  }

  @media (max-width: 840px) {
    body {
      padding-top: 64px;
    }
    .mobile-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
      padding: 0 20px;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 400;
      background: rgba(6, 10, 19, 0.9);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    }

    .mobile-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 17px;
      font-weight: 600;
    }

    .mobile-brand .m-mark {
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background: rgba(0, 214, 163, 0.14);
      border: 1px solid rgba(0, 214, 163, 0.25);
      color: var(--cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-family: var(--font-digit);
      font-size: 18px;
    }

    .burger-btn {
      width: 42px;
      height: 42px;
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 10px;
      cursor: pointer;
    }

    .burger-btn span {
      width: 20px;
      height: 2px;
      background: var(--text);
      border-radius: 2px;
      transition: all var(--transition);
    }

    .burger-btn.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .burger-btn.active span:nth-child(2) {
      opacity: 0;
    }

    .burger-btn.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .side-nav {
      transform: translateX(-100%);
      width: 300px;
      transition: transform 0.36s ease;
      box-shadow: 30px 0 50px rgba(0, 0, 0, 0.4);
      padding-top: 30px;
      z-index: 500;
    }

    .side-nav.nav-open-mobile {
      transform: translateX(0);
    }

    .nav-backdrop {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.57);
      backdrop-filter: blur(4px);
      z-index: 480;
      opacity: 0;
      visibility: hidden;
      transition: all var(--transition);
    }

    .nav-backdrop.show {
      opacity: 1;
      visibility: visible;
    }

    .main-body {
      margin-left: 0;
      width: 100%;
    }

    .content-wrap {
      padding-left: 20px;
      padding-right: 20px;
    }

    .cat-hero {
      padding: 54px 0 64px;
    }

    .cat-hero-grid {
      grid-template-columns: 1fr;
      gap: 34px;
    }

    .media-frame img {
      height: 280px;
    }

    .hero-actions {
      margin-bottom: 24px;
    }

    .footer-main {
      grid-template-columns: 1fr;
      gap: 32px;
    }

    .footer-bottom {
      flex-direction: column;
    }

    .site-footer {
      padding-top: 46px;
    }

    .cta-panel {
      padding: 42px 24px;
    }
  }

  @media (max-width: 600px) {
    .coverage-grid {
      grid-template-columns: 1fr;
    }
    .cat-hero {
      padding: 36px 0 48px;
    }
    .media-badge {
      width: 54px;
      height: 54px;
      left: 8px;
      top: -8px;
    }
    .reading-card {
      flex-direction: column;
    }
    .reading-card .rc-img {
      width: 100%;
      min-height: 160px;
    }
    .cta-actions {
      flex-direction: column;
      width: 100%;
    }
    .cta-actions .btn {
      width: 100%;
    }
    .hero-actions .btn {
      width: 100%;
    }
  }

/* roulang page: article */
:root {
  --page-bg: #060A13;
  --side-bg: #081020;
  --soft-bg: #0B1322;
  --panel-bg: rgba(15, 23, 42, 0.68);
  --line-glass: rgba(125, 190, 255, 0.18);
  --line-strong: rgba(0, 214, 163, 0.34);
  --text-main: #EDF3FF;
  --text-sub: #9DAEC4;
  --text-weak: #64748B;
  --primary: #00D6A3;
  --primary-rgb: 0, 214, 163;
  --blue: #2B6FF3;
  --blue-rgb: 43, 111, 243;
  --gold: #F0B63A;
  --danger: #F25C54;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 0 0 1px rgba(0, 214, 163, 0.22), 0 16px 40px rgba(3, 10, 20, 0.5);
  --font-cn: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-num: "Rajdhani", "Barlow Condensed", "DIN Alternate", "Arial Narrow", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page-bg);
  color: var(--text-main);
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, figure, blockquote, dl, dd {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

button, input {
  font: inherit;
}

button {
  cursor: pointer;
}

ul, ol {
  padding: 0;
  margin: 0;
  list-style: none;
}

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 400;
  background: var(--primary);
  color: #04131D;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 700;
  transition: top .2s ease;
}

.skip-link:focus {
  top: 16px;
}

.page-shell {
  display: flex;
  min-height: 100vh;
}

/* ===== 左侧导航 ===== */
.left-rail {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 248px;
  z-index: 220;
  display: flex;
  flex-direction: column;
  padding: 28px 18px 22px;
  background:
    radial-gradient(circle at 20% 0%, rgba(43, 111, 243, 0.18), transparent 42%),
    linear-gradient(180deg, #0B1527 0%, var(--side-bg) 100%);
  border-right: 1px solid rgba(125, 190, 255, 0.1);
}

.brand-lockup {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 0 6px 22px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(125, 190, 255, 0.1);
}

.brand-badge {
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 15px;
  background: linear-gradient(145deg, rgba(0, 214, 163, 0.16), rgba(43, 111, 243, 0.12));
  border: 1px solid rgba(0, 214, 163, 0.4);
  color: var(--primary);
  font-size: 24px;
  font-weight: 900;
  font-family: var(--font-num);
  box-shadow: inset 0 1px 0 rgba(0, 214, 163, 0.22);
}

.brand-copy {
  min-width: 0;
  padding-top: 2px;
}

.brand-copy strong {
  display: block;
  color: #F4F8FF;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-copy small {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.brand-copy small::before {
  content: "";
  width: 16px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), rgba(240, 182, 58, 0));
}

.nav-main li + li {
  margin-top: 4px;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 48px;
  padding: 11px 14px;
  border-radius: 11px;
  border: 1px solid transparent;
  background: transparent;
  color: #90A0B8;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.nav-ico {
  width: 18px;
  height: 18px;
  color: #6C7B92;
  transition: color .2s ease;
  flex: 0 0 auto;
}

.nav-link:hover {
  color: #F5FBFF;
  background: rgba(0, 214, 163, 0.08);
  border-color: rgba(0, 214, 163, 0.16);
}

.nav-link:hover .nav-ico {
  color: var(--primary);
}

.nav-link.is-active {
  background: linear-gradient(90deg, rgba(0, 214, 163, 0.13), rgba(0, 214, 163, 0.03));
  color: #FFFFFF;
  border-color: rgba(0, 214, 163, 0.25);
  box-shadow: inset 3px 0 0 var(--primary), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link.is-active .nav-ico {
  color: var(--primary);
}

.side-foot {
  padding: 16px 8px 0;
  margin-top: auto;
  border-top: 1px solid rgba(125, 190, 255, 0.1);
  color: var(--text-weak);
  font-size: 13px;
  line-height: 1.7;
}

.side-foot b {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #B7C7DD;
  font-weight: 600;
}

.side-foot b i {
  font-style: normal;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0, 214, 163, 0.8);
}

/* ===== 右侧主舞台 ===== */
.content-stage {
  margin-left: 248px;
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(1100px 500px at 90% -10%, rgba(43, 111, 243, 0.12), transparent 60%),
    radial-gradient(900px 400px at 0% 30%, rgba(0, 214, 163, 0.04), transparent 50%),
    var(--page-bg);
}

.main-content {
  flex: 1 1 auto;
  width: 100%;
}

.content-wrap {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-right: 48px;
  padding-left: 48px;
}

/* ===== 文章详情页版式 ===== */
.article-main {
  padding-top: 18px;
}

.article-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 286px;
  gap: 56px;
  align-items: start;
  padding-top: 44px;
  padding-bottom: 92px;
}

.article-primary {
  min-width: 0;
}

.article-side {
  position: sticky;
  top: 34px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  color: var(--text-sub);
  font-size: 14px;
}

.breadcrumb a {
  color: var(--text-sub);
  transition: color .2s ease;
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb .crumb-dot {
  color: var(--text-weak);
  font-style: normal;
}

.article-title {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #FFFFFF;
  max-width: 18ch;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  color: var(--text-sub);
  font-size: 14px;
  margin-top: 20px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(125, 190, 255, 0.1);
  border-left: 2px solid var(--primary);
  border-radius: 0 12px 12px 0;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  opacity: .8;
}

.article-meta .meta-cat {
  color: #D1DDF1;
  padding: 2px 10px;
  background: rgba(0, 214, 163, 0.1);
  border: 1px solid rgba(0, 214, 163, 0.2);
  border-radius: 999px;
  font-size: 13px;
}

.article-field {
  max-width: 76ch;
}

.article-cmswrap {
  margin-top: 34px;
  color: #C2D2E9;
  font-size: 17px;
  line-height: 2;
  word-break: break-word;
}

.article-cmswrap > * + * {
  margin-top: 1.15em;
}

.article-cmswrap h2 {
  font-size: 26px;
  line-height: 1.45;
  font-weight: 800;
  color: #F1F6FF;
  margin-top: 1.9em;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}

.article-cmswrap h3 {
  font-size: 22px;
  line-height: 1.5;
  font-weight: 700;
  color: #E6EEFB;
  margin-top: 1.7em;
}

.article-cmswrap p {
  margin-bottom: 1.4em;
}

.article-cmswrap a {
  color: var(--primary);
  border-bottom: 1px solid rgba(0, 214, 163, 0.35);
  transition: color .2s ease, border-color .2s ease;
}

.article-cmswrap a:hover {
  color: #6DF2D3;
  border-color: rgba(0, 214, 163, 0.7);
}

.article-cmswrap blockquote {
  margin: 2em 0;
  padding: 18px 22px;
  border-left: 3px solid var(--gold);
  background: rgba(240, 182, 58, 0.06);
  border-radius: 0 14px 14px 0;
  color: #D9C8A5;
  font-size: 16px;
}

.article-cmswrap ul,
.article-cmswrap ol {
  padding-left: 1.2em;
  list-style: disc;
  margin-bottom: 1.5em;
}

.article-cmswrap ol {
  list-style: decimal;
}

.article-cmswrap li {
  margin-bottom: 0.45em;
}

.article-cmswrap img {
  margin: 2em 0 1em;
  border-radius: 16px;
  border: 1px solid rgba(125, 190, 255, 0.18);
  background: #0E172A;
  box-shadow: var(--shadow-soft);
}

.article-cmswrap figcaption {
  color: var(--text-weak);
  font-size: 13px;
  text-align: center;
  margin-top: 6px;
}

.article-cmswrap code {
  padding: 2px 7px;
  border-radius: 6px;
  background: rgba(43, 111, 243, 0.1);
  color: #7FD1E6;
  font-size: 0.92em;
}

.article-cmswrap hr {
  border: 0;
  height: 1px;
  margin: 3em 0;
  background: linear-gradient(90deg, rgba(0, 214, 163, 0.32), rgba(43, 111, 243, 0.1) 50%, transparent);
}

/* ===== 文章结束 / 推荐 ===== */
.article-exit {
  margin-top: 56px;
}

.read-next-card {
  display: grid;
  grid-template-columns: 220px 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--panel-bg);
  border: 1px solid var(--line-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.read-next-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 0 1px rgba(0, 214, 163, 0.18), 0 16px 40px rgba(3, 10, 20, 0.4);
  border-color: rgba(0, 214, 163, 0.22);
}

.read-next-cover {
  overflow: hidden;
  border-radius: 14px;
  background: #0C1525;
}

.read-next-cover img {
  width: 100%;
  height: 136px;
  object-fit: cover;
  filter: saturate(0.85);
}

.read-next-info .tag-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--gold);
  font-size: 13px;
  margin-bottom: 8px;
}

.read-next-info .tag-text i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  display: inline-block;
}

.read-next-info h3 {
  font-size: 20px;
  font-weight: 800;
  color: #FFFFFF;
}

.read-next-info p {
  margin-top: 8px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.9;
}

.back-home-link {
  display: inline-flex;
  margin-top: 22px;
  color: var(--text-sub);
  font-size: 14px;
  font-weight: 600;
  transition: color .2s ease, gap .2s ease;
  gap: 6px;
  align-items: center;
}

.back-home-link:hover {
  color: var(--primary);
  gap: 10px;
}

/* ===== 右侧面板 ===== */
.side-card {
  background: rgba(10, 18, 33, 0.82);
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
}

.side-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.side-eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), transparent);
}

.side-card h3 {
  margin-top: 12px;
  color: #FFFFFF;
  font-size: 19px;
  font-weight: 800;
}

.side-card p {
  margin-top: 10px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.9;
}

.rail-link-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 18px;
}

.rail-link-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 13px;
  border-radius: 10px;
  border: 1px solid rgba(125, 190, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  color: #BBC8DD;
  font-size: 14px;
  font-weight: 600;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.rail-link-list a svg {
  width: 16px;
  height: 16px;
  color: var(--text-sub);
  transition: color .2s ease;
}

.rail-link-list a:hover {
  color: var(--primary);
  border-color: rgba(0, 214, 163, 0.3);
  background: rgba(0, 214, 163, 0.06);
}

.rail-link-list a:hover svg {
  color: var(--primary);
}

.rail-tag {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.rail-tag a {
  padding: 4px 11px;
  background: rgba(125, 190, 255, 0.08);
  border: 1px solid rgba(125, 190, 255, 0.13);
  border-radius: 999px;
  color: var(--text-sub);
  font-size: 13px;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.rail-tag a:hover {
  color: var(--primary);
  border-color: rgba(0, 214, 163, 0.3);
}

.side-note {
  border-left: 2px solid var(--gold);
  padding: 6px 0 4px 12px;
  font-size: 13px;
  color: var(--text-sub);
  background: transparent;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border: 0;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, opacity .2s ease, color .2s ease;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn-primary {
  background: var(--primary);
  color: #061A22;
  box-shadow: 0 0 20px rgba(0, 214, 163, 0.3), 0 6px 18px rgba(0, 0, 0, 0.24);
}

.btn-primary:hover {
  background: #16ECA9;
  color: #041715;
  box-shadow: 0 0 26px rgba(0, 214, 163, 0.5), 0 8px 22px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: scale(0.98);
  opacity: 0.87;
}

.btn-ghost {
  background: rgba(15, 23, 42, 0.36);
  border: 1px solid rgba(125, 190, 255, 0.26);
  color: #DDE7F5;
  white-space: nowrap;
}

.btn-ghost:hover {
  color: #FFFFFF;
  border-color: rgba(0, 214, 163, 0.5);
  background: rgba(0, 214, 163, 0.07);
}

.btn-sm {
  min-height: 38px;
  padding: 0 16px;
  font-size: 14px;
}

/* ===== 空状态 ===== */
.not-found-wrap {
  padding-top: 120px;
  padding-bottom: 140px;
  display: flex;
  justify-content: center;
}

.not-found-panel {
  max-width: 620px;
  width: 100%;
  padding: 56px 44px;
  background: rgba(10, 18, 33, 0.88);
  border: 1px dashed rgba(125, 190, 255, 0.3);
  border-radius: 22px;
  text-align: center;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.3);
}

.not-found-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: rgba(0, 214, 163, 0.09);
  border: 1px solid var(--line-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.not-found-panel h1 {
  font-size: 30px;
  color: #FFF;
}

.not-found-panel p {
  margin-top: 14px;
  color: var(--text-sub);
}

.not-found-panel .btn {
  margin-top: 24px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: linear-gradient(180deg, rgba(6, 10, 19, 0), rgba(5, 8, 15, 0.9) 60%);
  border-top: 1px solid rgba(125, 190, 255, 0.12);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 0.9fr;
  gap: 44px;
  padding-top: 56px;
  padding-bottom: 42px;
}

.footer-brand p {
  max-width: 38ch;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.9;
  margin-top: 20px;
}

.brand-line {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(0, 214, 163, 0.12), rgba(43, 111, 243, 0.12));
  border: 1px solid rgba(0, 214, 163, 0.35);
  color: var(--primary);
  font-size: 19px;
  font-weight: 900;
  font-family: var(--font-num);
}

.footer-h {
  font-size: 16px;
  color: #EEF3FB;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-h::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  margin-top: 8px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--primary), transparent);
}

.footer-col ul li {
  margin-bottom: 11px;
}

.footer-col ul a {
  color: var(--text-sub);
  font-size: 14px;
  transition: color .2s ease, padding-left .2s ease;
}

.footer-col ul a:hover {
  color: var(--primary);
  padding-left: 5px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
  padding-top: 18px;
  padding-bottom: 26px;
  color: var(--text-weak);
  border-top: 1px solid rgba(125, 190, 255, 0.1);
  font-size: 13px;
}

.footer-safe {
  display: flex;
  gap: 10px 22px;
  flex-wrap: wrap;
}

.footer-safe span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-safe a {
  color: #93A6BD;
  transition: color .2s ease;
}

.footer-safe a:hover {
  color: var(--primary);
}

/* ===== 移动端导航 ===== */
.mobile-topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 18px;
  background: rgba(7, 12, 20, 0.92);
  border-bottom: 1px solid rgba(125, 190, 255, 0.14);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 180;
}

.m-brand {
  display: flex;
  align-items: center;
  gap: 9px;
}

.m-brand .brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  font-size: 16px;
}

.m-brand strong {
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  color: #EEF4FF;
}

.mobile-trigger {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(125, 190, 255, 0.2);
  border-radius: 12px;
  color: #D4E0EF;
  line-height: 1;
}

.mobile-trigger svg {
  width: 21px;
  height: 21px;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(88vw, 340px);
  background: linear-gradient(180deg, #0B1527, #060B15);
  z-index: 300;
  display: flex;
  flex-direction: column;
  padding: 26px 18px;
  transform: translateX(102%);
  transition: transform .3s cubic-bezier(0.3, 0.8, 0.4, 1);
  box-shadow: -18px 0 44px rgba(0, 0, 0, 0.38);
}

body.menu-open .mobile-drawer {
  transform: translateX(0);
}

.drawer-close {
  align-self: flex-end;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(125, 190, 255, 0.24);
  color: var(--text-main);
  border-radius: 12px;
}

.mobile-drawer .nav-main {
  margin-top: 24px;
}

.mobile-drawer .nav-link {
  font-size: 18px;
  line-height: 1.3;
}

.mobile-drawer .nav-link .nav-ico {
  width: 21px;
  height: 21px;
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(1, 4, 10, 0.72);
  z-index: 290;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}

body.menu-open .drawer-backdrop {
  opacity: 1;
  pointer-events: auto;
}

/* ===== 响应式 ===== */
@media (max-width: 1180px) {
  .article-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .article-side {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 28px;
  }
}

@media (max-width: 992px) {
  .footer-main {
    grid-template-columns: 1.4fr 1fr;
  }

  .content-wrap {
    padding-right: 36px;
    padding-left: 36px;
  }

  .read-next-card {
    grid-template-columns: 1fr;
  }

  .read-next-cover img {
    height: 180px;
  }
}

@media (max-width: 840px) {
  .left-rail {
    display: none;
  }

  .content-stage {
    margin-left: 0;
  }

  .mobile-topbar {
    display: flex;
  }

  .article-main {
    padding-top: 0;
  }

  .article-columns {
    padding-top: 34px;
    padding-bottom: 72px;
  }
}

@media (max-width: 640px) {
  .content-wrap {
    padding-right: 20px;
    padding-left: 20px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-top: 42px;
  }

  .article-side {
    display: flex;
  }

  .article-title {
    font-size: 31px;
    line-height: 1.3;
  }

  .article-meta {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px;
  }

  .article-cmswrap {
    font-size: 16px;
  }

  .article-cmswrap h2 {
    font-size: 24px;
  }

  .not-found-panel {
    padding: 38px 22px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category2 */
:root {
  --bg: #060A13;
  --bg2: #0B1322;
  --panel: rgba(15, 23, 42, 0.55);
  --line: rgba(125, 190, 255, 0.18);
  --text: #EDF3FF;
  --text2: #9DAEC4;
  --text3: #64748B;
  --cyan: #00D6A3;
  --blue: #2B6FF3;
  --gold: #F0B63A;
  --danger: #F25C54;
  --glow: rgba(0, 214, 163, 0.35);
  --blueglow: rgba(43, 111, 243, 0.4);
  --r-lg: 18px;
  --r-md: 12px;
  --r-sm: 8px;
  --r-pill: 999px;
  --main-font: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --number-font: "Rajdhani", "DIN Alternate", "Barlow Condensed", "Arial Narrow", sans-serif;
  --sidebar-w: 248px;
  --spacing: clamp(4.5rem, 9vw, 7.5rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background:
    radial-gradient(1100px 560px at 78% -12%, rgba(43, 111, 243, 0.16), transparent 62%),
    radial-gradient(900px 460px at 6% 110%, rgba(0, 214, 163, 0.08), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--main-font);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  padding: 0;
  margin: 0;
  list-style: none;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  line-height: 1.22;
  color: var(--text);
  text-wrap: balance;
}

p {
  margin: 0 0 16px;
}

button, input {
  font: inherit;
}

.content-wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 48px;
  padding-right: 48px;
}

a.skip-link {
  position: fixed;
  left: 12px;
  top: -64px;
  z-index: 300;
  padding: 12px 18px;
  background: var(--cyan);
  color: #04121D;
  border-radius: var(--r-pill);
  font-weight: 700;
  transition: top .2s ease;
}
a.skip-link:focus {
  top: 12px;
  outline: 3px solid rgba(0,214,163,.45);
}

/* 桌面端左侧竖向导航 */
.site-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  padding: 28px 22px 22px;
  background: rgba(6, 12, 23, 0.86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid rgba(125, 190, 255, 0.10);
  z-index: 140;
}

.side-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px;
  border-bottom: 1px solid rgba(125, 190, 255, 0.12);
  margin-bottom: 18px;
}

.logo-mark {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  position: relative;
  color: var(--cyan);
  font-weight: 800;
  font-size: 24px;
  background: linear-gradient(145deg, rgba(0,214,163,0.16), rgba(43,111,243,0.10));
  border: 1px solid rgba(0,214,163,0.28);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

.logo-mark small {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .2em;
  color: #0F2A35;
  background: var(--cyan);
  position: absolute;
  right: -7px;
  top: -7px;
  padding: 2px 6px;
  border-radius: var(--r-pill);
}

.side-logo-text strong {
  display: block;
  font-size: 18px;
  color: var(--text);
  letter-spacing: 0.02em;
  line-height: 1.25;
}

.side-logo-text span {
  font-size: 13px;
  color: var(--text3);
}

.nav-main {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 0 18px;
}

.nav-main a.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  color: #A9BBD1;
  font-size: 15px;
  transition: color .25s ease, background .25s ease, transform .2s ease;
}

.nav-main a.nav-link .nav-ico {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  opacity: 0.72;
  transition: opacity .25s ease;
}

.nav-main a.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-main a.nav-link.is-active {
  color: #fff;
  background: linear-gradient(90deg, rgba(0,214,163,0.15), rgba(0,214,163,0.03));
}

.nav-main a.nav-link.is-active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18%;
  bottom: 18%;
  width: 3px;
  border-radius: 3px;
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(0, 214, 163, 0.65);
}

.nav-main a.nav-link.is-active .nav-ico {
  color: var(--cyan);
  opacity: 1;
}

.side-extra {
  margin-top: auto;
  padding: 16px 6px 0;
  border-top: 1px solid rgba(125,190,255,0.10);
}

.side-extra .safe-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text3);
  line-height: 1.5;
}

.safe-chip .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 10px rgba(240,182,58,0.5);
  flex: 0 0 7px;
}

/* 移动端顶部栏 */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  height: 64px;
  align-items: center;
  background: rgba(6, 12, 23, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
  z-index: 130;
  padding: 0 16px;
}

.mobile-header .burger {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  margin-right: 12px;
  border-radius: 10px;
  background: transparent;
  border: 1px solid rgba(125,190,255,0.16);
  color: var(--text);
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease;
}

.mobile-header .burger svg {
  width: 20px;
  height: 20px;
}

.mobile-header .burger:hover,
.mobile-header .burger:focus-visible {
  border-color: rgba(0,214,163,0.5);
  outline: none;
}

.mobile-header .mobile-brand {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mobile-header .mobile-brand .mini-logo {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 800;
  border-radius: 8px;
  border: 1px solid rgba(0,214,163,.3);
  color: var(--cyan);
}

.scrim {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: rgba(2, 5, 12, 0.55);
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
  backdrop-filter: blur(2px);
}

.scrim.is-open {
  opacity: 1;
  visibility: visible;
}

.page-shell {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.site-main {
  flex: 1;
}

/* Hero */
.cat-hero {
  position: relative;
  min-height: 420px;
  padding: 72px 0 0;
  overflow: hidden;
}

.cat-hero .hero-backdrop {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-repeat: no-repeat;
  background-position: 78% 22%;
  background-size: cover;
}

.cat-hero .hero-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #060A13 18%, rgba(6,10,19,0.74) 46%, rgba(6,10,19,0.28) 75%, rgba(6,10,19,0.62) 100%),
    linear-gradient(0deg, rgba(6,10,19,.85), transparent 45%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding-bottom: 52px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text3);
  font-size: 13px;
  margin-bottom: 22px;
}

.breadcrumb a {
  color: var(--text2);
  transition: color .2s ease;
}

.breadcrumb a:hover {
  color: var(--cyan);
}

.breadcrumb .sep {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text3);
}

.breadcrumb .crumb-current {
  color: var(--cyan);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  margin-bottom: 18px;
  border-radius: var(--r-pill);
  background: rgba(6,12,23,0.42);
  border: 1px solid rgba(240,182,58,0.3);
  color: #FFD688;
  font-size: 13px;
  letter-spacing: .05em;
}

.hero-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 12px rgba(240,182,58,.6);
}

.cat-hero h1 {
  font-size: clamp(34px, 4.4vw, 60px);
  max-width: 830px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.cat-hero h1 .brand-dot {
  color: var(--cyan);
}

.cat-hero .hero-lead {
  margin-top: 20px;
  max-width: 600px;
  color: #C5D2E2;
  font-size: 17px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 30px;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease, color .25s ease;
  white-space: nowrap;
}

.btn svg, .btn .arr {
  width: 17px;
  height: 17px;
}

.btn-primary {
  background: var(--cyan);
  color: #04141C;
  box-shadow: 0 0 0 1px rgba(0,214,163,.2), 0 0 22px rgba(0,214,163,.28);
}

.btn-primary:hover {
  transform: translateY(-3px);
  background: #13E5B6;
  box-shadow: 0 0 0 1px rgba(0,214,163,.35), 0 10px 30px rgba(0,214,163,.35);
}

.btn-primary:active {
  transform: translateY(-1px);
  filter: brightness(0.95);
}

.btn-ghost {
  background: rgba(15,23,42,0.35);
  border-color: rgba(125,190,255,0.28);
  color: #D8E4F5;
  backdrop-filter: blur(5px);
}

.btn-ghost:hover {
  border-color: rgba(0,214,163,.55);
  color: #fff;
  background: rgba(0,214,163,0.07);
  transform: translateY(-2px);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.hero-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
  max-width: 740px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border-radius: var(--r-pill);
  background: rgba(12, 20, 36, 0.46);
  border: 1px solid rgba(125,190,255,0.15);
  font-size: 13px;
  color: #B8C8DA;
  backdrop-filter: blur(8px);
}

.chip::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: .75;
}

/* 通用 section */
.section {
  padding: var(--spacing) 0;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}

.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: 10px;
}

.section-head .eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--glow);
}

.section-title {
  font-size: clamp(24px, 2.8vw, 34px);
  letter-spacing: -0.01em;
}

.section-desc {
  max-width: 560px;
  color: var(--text2);
  font-size: 15px;
  margin-top: 12px;
}

/* About 双重叙事区 */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 5vw, 76px);
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-visual img {
  width: 100%;
  border-radius: 20px;
  min-height: 300px;
  object-fit: cover;
  border: 1px solid rgba(125,190,255,0.13);
}

.about-visual .visual-card-caption {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 7px 14px;
  background: rgba(8,15,28,0.72);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--text2);
}

.visual-card-caption i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
}

.about-copy h1, .about-copy h2 {
  margin-bottom: 6px;
}

.about-copy h2 {
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.about-copy .copy-divider {
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(240,182,58,0.0));
  border-radius: 8px;
  margin: 18px 0 22px;
}

.about-copy p {
  color: #B3C3D7;
  margin-bottom: 16px;
}

.plain-list {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 18px;
}

.plain-list li {
  position: relative;
  padding-left: 17px;
  color: #C9D6E8;
  font-size: 15px;
}

.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  transform: rotate(45deg);
  opacity: .85;
}

/* 目录式主体 */
.directory-panel {
  margin-top: var(--spacing);
}

.section-keep {
  margin-bottom: 40px;
}

.directory-grid {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}

.anchor-rail {
  position: sticky;
  top: 28px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px 14px;
  background: linear-gradient(150deg, rgba(15,23,42,0.62), rgba(9,15,28,0.42));
  backdrop-filter: blur(12px);
}

.anchor-rail .rail-title {
  font-size: 13px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 0 10px 13px;
  border-bottom: 1px solid rgba(125,190,255,.12);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.anchor-rail .rail-title::after {
  content: "";
  height: 1px;
  background: linear-gradient(90deg, rgba(0,214,163,.7), transparent);
  flex: 1;
}

.anchor-rail ul li + li {
  margin-top: 4px;
}

.anchor-rail a.rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px;
  border-radius: 9px;
  color: var(--text2);
  font-size: 14px;
  line-height: 1.35;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}

.anchor-rail a.rail-link span {
  font-family: var(--number-font);
  font-size: 12px;
  color: var(--cyan);
  opacity: .75;
  font-weight: 600;
}

.anchor-rail a.rail-link:hover {
  background: rgba(255,255,255,.05);
  color: #fff;
  transform: translateX(4px);
}

.directory-segments {
  min-width: 0;
}

.segment-block {
  position: relative;
  padding: 26px 0 34px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 250px;
  gap: 32px;
  align-items: start;
}

.segment-block + .segment-block {
  border-top: 1px solid rgba(125,190,255,0.12);
}

.seg-main {
  min-width: 0;
}

.seg-main h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  margin-bottom: 15px;
  color: #F0F6FF;
}

.seg-main h3 .seg-num {
  font-family: var(--number-font);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--cyan);
  border: 1px solid rgba(0,214,163,.3);
  padding: 2px 8px;
  border-radius: var(--r-pill);
  background: rgba(0,214,163,.08);
}

.seg-main p {
  color: #B3C3D7;
}

.seg-main strong {
  color: #DCE9F8;
  font-weight: 600;
}

.seg-aside {
  padding-top: 8px;
}

.mini-note {
  background: rgba(8,14,26,0.6);
  border: 1px solid rgba(125,190,255,0.12);
  border-radius: var(--r-lg);
  padding: 18px 18px 12px;
}

.mini-note .mini-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  margin-bottom: 14px;
  border: 1px solid rgba(240,182,58,.25);
  background: rgba(240,182,58,.08);
  color: var(--gold);
}

.mini-note .mini-icon svg {
  width: 18px;
  height: 18px;
}

.mini-note h4 {
  color: #F0DCA8;
  font-size: 15px;
  margin-bottom: 6px;
}

.mini-note p {
  font-size: 13px;
  color: var(--text3);
  margin-bottom: 8px;
  line-height: 1.65;
}

.term-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 14px 0 0;
}

.term-item {
  padding: 13px 15px;
  background: rgba(8,14,26,0.52);
  border: 1px solid rgba(125,190,255,0.10);
  border-radius: var(--r-md);
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}

.term-item:hover {
  border-color: rgba(0,214,163,.28);
  transform: translateY(-3px);
  background: rgba(0,214,163,.03);
}

.term-item dt {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 700;
  color: #E8F2FF;
  margin-bottom: 3px;
}

.term-item dt::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
}

.term-item dd {
  margin: 0;
  font-size: 13px;
  color: var(--text2);
  line-height: 1.7;
}

/* 板块小卡 */
.mini-module-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 18px;
  margin-top: 16px;
}

.module-card {
  padding: 24px 20px;
  border-radius: var(--r-lg);
  background: linear-gradient(155deg, rgba(15,23,42,.62), rgba(9,15,27,.3));
  border: 1px solid rgba(125,190,255,.12);
  position: relative;
  overflow: hidden;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.module-card::before {
  content: "";
  position: absolute;
  top: -35px;
  right: -35px;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(0,214,163,.10), transparent 68%);
  pointer-events: none;
}

.module-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,214,163,.3);
  box-shadow: 0 0 0 1px rgba(0,214,163,.08), 0 18px 34px rgba(2,8,16,.3);
}

.module-card .card-num {
  font-family: var(--number-font);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--gold);
  text-transform: uppercase;
}

.module-card .module-ico {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin: 11px 0 14px;
  border-radius: 12px;
  background: rgba(0,214,163,.10);
  border: 1px solid rgba(0,214,163,.22);
  color: var(--cyan);
}

.module-card .module-ico svg {
  width: 20px;
  height: 20px;
}

.module-card h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.module-card p {
  font-size: 13.5px;
  color: var(--text2);
  margin: 0;
  line-height: 1.7;
}

/* 数据带/大视觉 */
.feature-band {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  padding: clamp(34px, 5vw, 64px);
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 38px;
  align-items: center;
  background: linear-gradient(90deg, rgba(8,14,26,.84), rgba(11,19,34,.5)), url('/assets/images/coverpic/cover-5.webp') center / cover no-repeat;
}

.feature-band::after {
  content: "";
  position: absolute;
  inset: auto -2% -45% 30%;
  height: 120%;
  background: radial-gradient(ellipse at center, rgba(0,214,163,.10), transparent 65%);
  pointer-events: none;
}

.feature-band-copy {
  position: relative;
  z-index: 2;
}

.feature-band-copy h2 {
  font-size: clamp(24px, 2.8vw, 34px);
  margin-bottom: 16px;
}

.feature-band-copy .gold-line {
  width: 46px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  border-radius: 8px;
  margin-bottom: 20px;
}

.feature-band-copy p {
  color: #B8C9DD;
  font-size: 16px;
}

.band-metrics {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.metric-row {
  display: grid;
  grid-template-columns: 44px minmax(120px, .5fr) 1.6fr;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(7,12,23,0.5);
  border: 1px solid rgba(125,190,255,.12);
  transition: border-color .25s ease, background .25s ease;
  backdrop-filter: blur(10px);
}

.metric-row:hover {
  border-color: rgba(0,214,163,.35);
  background: rgba(0,214,163,.05);
}

.metric-row .metric-idx {
  font-family: var(--number-font);
  font-size: 20px;
  color: rgba(0,214,163,.6);
  font-weight: 700;
  letter-spacing: .06em;
}

.metric-row .metric-label {
  color: #DDEAF8;
  font-weight: 600;
  font-size: 15px;
}

.metric-row .metric-desc {
  font-size: 13px;
  color: var(--text2);
  margin: 0;
}

/* FAQ */
.faq-wrap {
  max-width: 860px;
}

.faq-panel {
  border-bottom: 1px solid rgba(125,190,255,0.12);
}

.faq-panel summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  cursor: pointer;
  list-style: none;
  padding: 22px 4px;
  font-size: 17px;
  font-weight: 600;
  color: #DCE9F8;
  transition: color .2s ease;
  user-select: none;
}

.faq-panel summary::-webkit-details-marker {
  display: none;
}

.faq-panel summary:hover,
.faq-panel[open] summary {
  color: var(--cyan);
}

.faq-panel .faq-icon {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  position: relative;
  border-radius: 50%;
  border: 1px solid rgba(125,190,255,.25);
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
}

.faq-panel .faq-icon::before,
.faq-panel .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 1.5px;
  background: var(--cyan);
  transform: translate(-50%, -50%);
}

.faq-panel .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-panel[open] .faq-icon {
  transform: rotate(45deg);
  border-color: rgba(0,214,163,.4);
}

.faq-answer {
  color: var(--text2);
  padding: 0 24px 22px 4px;
  max-width: 720px;
}

.faq-answer p {
  margin-bottom: 8px;
}

/* CTA */
.cta-panel {
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(115deg, rgba(43,111,243,0.16), transparent 48%),
    linear-gradient(290deg, rgba(0,214,163,0.08), transparent 44%),
    var(--bg2);
  padding: clamp(36px, 5vw, 62px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
}

.cta-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: 24px;
  border: 1px solid rgba(240,182,58,.14);
}

.cta-copy h2 {
  font-size: clamp(22px, 2.4vw, 32px);
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.cta-copy p {
  color: var(--text2);
  margin: 0;
  max-width: 510px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.cta-actions .btn {
  z-index: 1;
}

/* footer */
.site-footer {
  background: rgba(5, 9, 18, 0.9);
  border-top: 1px solid var(--line);
  padding: 58px 0 26px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.7fr .8fr .9fr;
  gap: 48px;
  padding-bottom: 38px;
  border-bottom: 1px solid rgba(125,190,255,.10);
}

.footer-brand .brand-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-brand .brand-mark {
  display: grid;
  place-items: center;
  border-radius: 11px;
  border: 1px solid rgba(0,214,163,.26);
  background: rgba(0,214,163,.1);
  color: var(--cyan);
  font-weight: 800;
}

.footer-brand strong {
  color: #FFF;
  font-weight: 700;
}

.footer-brand p {
  color: var(--text3);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 0;
  max-width: 420px;
}

.footer-col h4 {
  font-size: 15px;
  margin-bottom: 18px;
  color: #E8F1FC;
  font-weight: 600;
  position: relative;
  padding-bottom: 9px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(0,214,163,.4);
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: var(--text2);
  font-size: 14px;
  transition: color .2s ease, padding .2s ease;
}

.footer-col ul a:hover {
  color: var(--cyan);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text3);
  font-size: 13px;
}

.footer-bottom p {
  margin: 0;
}

.footer-safe {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

.footer-safe a {
  color: var(--text2);
  transition: color .2s ease;
}

.footer-safe a:hover {
  color: var(--cyan);
}

/* responsive */
@media (max-width: 1080px) {
  .content-wrap {
    padding-left: 28px;
    padding-right: 28px;
  }
  .module-grid-datas {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .seg-side-info { display:none; }
  .term-grid { grid-template-columns: 1fr; }
  .feature-band { grid-template-columns: 1fr; }
  .cta-panel { align-items:flex-start; }
}

@media (max-width: 840px) {
  .mobile-header {
    display: flex;
  }

  .site-sidebar {
    transform: translateX(-102%);
    transition: transform .32s ease;
    width: min(300px, 88vw);
    padding-top: 26px;
  }

  .site-sidebar.is-open {
    transform: translateX(0);
  }

  .page-shell {
    margin-left: 0;
  }

  .content-wrap {
    padding-left: 18px;
    padding-right: 18px;
  }

  .cat-hero {
    min-height: auto;
    padding-top: 36px;
  }

  .hero-inner {
    padding-bottom: 42px;
  }

  .section {
    padding: calc(var(--spacing) * .72) 0;
  }

  .directory-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .anchor-rail {
    position: static;
    margin-bottom: 28px;
    padding: 14px;
  }

  .anchor-rail ul {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .anchor-rail ul li {
    flex: 0 0 auto;
  }

  .anchor-rail a.rail-link {
    padding: 7px 11px;
    border: 1px solid rgba(125,190,255,.12);
    border-radius: var(--r-pill);
  }

  .anchor-rail a.rail-link:hover {
    transform: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-visual {
    order: 2;
  }

  .about-copy {
    order: 1;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .section-title {
    font-size: 24px;
  }

  .cat-hero h1 {
    font-size: 34px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .plain-list {
    grid-template-columns: 1fr;
  }

  .module-grid-datas {
    grid-template-columns: 1fr;
  }

  .mini-module-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .module-card {
    padding: 17px 14px;
  }

  .module-card h3 {
    font-size: 15px;
  }

  .metric-row {
    grid-template-columns: 28px 1fr;
    gap: 8px 14px;
    padding: 13px;
  }

  .metric-row .metric-desc {
    grid-column: 2;
  }

  .segment-block {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-bottom: 26px;
  }

  .faq-answer {
    padding-right: 0;
  }

  .footer-safe {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}