/* roulang page: index */
:root {
  --bg-deep: #080D1A;
  --bg-panel: rgba(15, 23, 42, 0.72);
  --bg-elevated: #0F172A;
  --primary: #2E6BFF;
  --primary-hover: #58A6FF;
  --accent: #D9B36C;
  --border-glass: rgba(255,255,255,0.08);
  --border-light: rgba(255,255,255,0.14);
  --text-primary: #E7EDF5;
  --text-secondary: #93A1B5;
  --text-muted: #5B6B82;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-xl: 24px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.35);
  --shadow-hover: 0 16px 40px rgba(0,0,0,0.5);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", Consolas, "Courier New", monospace;
  --nav-w: 264px;
  --spacer: 80px;
  --transition: all .3s cubic-bezier(.25,.8,.25,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg-deep);
  color:var(--text-primary);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;display:block;border:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input{font-family:inherit}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--primary-hover);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.section{padding:var(--spacer) 0}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.5px;color:var(--accent);
  background:rgba(217,179,108,.08);
  border:1px solid rgba(217,179,108,.25);
  border-radius:999px;
  padding:6px 16px;
  font-weight:500;
  margin-bottom:20px;
}
.section-title{
  font-size:clamp(28px,3vw,36px);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.5px;
  margin-bottom:16px;
}
.section-sub{
  font-size:16px;
  color:var(--text-secondary);
  max-width:640px;
  line-height:1.75;
}
.divider{
  height:1px;
  border:none;
  background:linear-gradient(to right, transparent, rgba(255,255,255,.14), transparent);
  margin:0;
}
body::before{
  content:'';
  position:fixed;
  top:0;left:0;right:0;bottom:0;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)' opacity='0.4'/%3E%3C/svg%3E");
  opacity:.018;
  pointer-events:none;
  z-index:9999;
}
/* ---------- 左侧固定导航 ---------- */
.side-nav{
  position:fixed;
  left:0;top:0;
  width:var(--nav-w);
  height:100vh;
  background:#060A13;
  z-index:1000;
  display:flex;
  flex-direction:column;
  border-right:1px solid var(--border-glass);
  box-shadow:0 0 40px rgba(0,0,0,.5);
}
.side-nav::after{
  content:'';
  position:absolute;
  right:-1px;top:0;height:100%;width:1px;
  background:linear-gradient(to bottom, transparent, rgba(46,107,255,.35), transparent);
}
.brand{
  padding:28px 28px 0;
  margin-bottom:32px;
}
.brand-row{
  display:flex;
  align-items:center;
  gap:12px;
}
.brand-mark{
  width:40px;height:40px;
  border-radius:12px;
  background:linear-gradient(135deg, var(--primary) 0%, #1A4DD8 100%);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;
  color:#fff;
  box-shadow:0 0 24px rgba(46,107,255,.4);
  flex-shrink:0;
}
.brand-name{
  font-size:22px;
  font-weight:800;
  letter-spacing:.5px;
  color:var(--text-primary);
  line-height:1.2;
}
.brand-domain{
  display:block;
  font-size:11px;
  font-family:var(--font-mono);
  color:var(--text-muted);
  margin-top:8px;
  letter-spacing:.3px;
}
.nav-menu{
  flex:1;
  padding:0 20px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:13px 16px 13px 20px;
  font-size:15px;
  font-weight:500;
  color:var(--text-secondary);
  border-radius:12px;
  transition:var(--transition);
}
.nav-item i{
  width:20px;
  text-align:center;
  font-size:14px;
  color:var(--text-muted);
  transition:var(--transition);
}
.nav-item:hover{
  color:var(--text-primary);
  background:rgba(255,255,255,.03);
  transform:translateX(2px);
}
.nav-item:hover i{
  color:var(--primary-hover);
}
.nav-item.active{
  color:var(--text-primary);
  background:rgba(46,107,255,.08);
  font-weight:600;
}
.nav-item.active::before{
  content:'';
  position:absolute;
  left:0;top:20%;
  height:60%;
  width:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(46,107,255,.8);
}
.nav-item.active i{
  color:var(--primary-hover);
}
.nav-bottom{
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:16px;
}
.btn-glass{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 16px;
  border-radius:var(--radius-md);
  border:1px solid rgba(46,107,255,.35);
  background:rgba(46,107,255,.08);
  color:var(--text-primary);
  font-size:14px;
  font-weight:600;
  transition:var(--transition);
  backdrop-filter:blur(8px);
}
.btn-glass:hover{
  background:rgba(46,107,255,.18);
  border-color:var(--primary-hover);
  box-shadow:0 0 20px rgba(46,107,255,.25);
}
.status-card{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(255,255,255,.02);
  border:1px solid var(--border-glass);
  font-size:13px;
  color:var(--text-muted);
}
.status-dot{
  width:8px;height:8px;
  border-radius:50%;
  background:#34D399;
  box-shadow:0 0 8px rgba(52,211,153,.6);
  flex-shrink:0;
  animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
/* ---------- 移动端顶栏 ---------- */
.top-nav{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:rgba(6,10,19,.85);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-glass);
  z-index:1100;
}
.hamburger{
  width:42px;height:42px;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:5px;
  border-radius:10px;
  transition:var(--transition);
}
.hamburger:hover{background:rgba(255,255,255,.05)}
.hamburger span{
  display:block;
  width:20px;height:2px;
  background:var(--text-primary);
  border-radius:2px;
  transition:var(--transition);
}
.top-brand{
  font-size:19px;
  font-weight:800;
  color:var(--text-primary);
  letter-spacing:.5px;
}
.top-login{
  font-size:14px;
  font-weight:600;
  color:var(--text-primary);
  padding:8px 16px;
  border-radius:8px;
  border:1px solid rgba(46,107,255,.35);
  background:rgba(46,107,255,.1);
  transition:var(--transition);
}
.top-login:hover{
  background:rgba(46,107,255,.2);
}
.drawer{
  position:fixed;
  top:0;right:0;
  width:82%;
  max-width:340px;
  height:100vh;
  background:#060A13;
  z-index:1200;
  padding:24px;
  transform:translateX(105%);
  transition:transform .4s cubic-bezier(.25,.8,.25,1);
  box-shadow:-20px 0 50px rgba(0,0,0,.5);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-overlay{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.5);
  backdrop-filter:blur(4px);
  z-index:1150;
  opacity:0;
  visibility:hidden;
  transition:var(--transition);
}
.drawer-overlay.show{opacity:1;visibility:visible}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:32px;
  padding-bottom:20px;
  border-bottom:1px solid var(--border-glass);
}
.drawer-brand{
  font-size:20px;
  font-weight:800;
}
.drawer-close{
  width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  font-size:18px;
  color:var(--text-secondary);
  transition:var(--transition);
}
.drawer-close:hover{
  background:rgba(255,255,255,.06);
  color:var(--text-primary);
}
.drawer-nav{display:flex;flex-direction:column;gap:8px}
.drawer-item{
  padding:14px 16px;
  border-radius:12px;
  font-size:16px;
  font-weight:500;
  color:var(--text-secondary);
  transition:var(--transition);
  display:flex;
  align-items:center;
  gap:12px;
}
.drawer-item i{width:20px;text-align:center;color:var(--text-muted)}
.drawer-item:hover{
  color:var(--text-primary);
  background:rgba(255,255,255,.04);
  transform:translateX(4px);
}
.drawer-item.active{
  color:var(--text-primary);
  background:rgba(46,107,255,.1);
}
.drawer-item.active i{color:var(--primary-hover)}
/* ---------- 主内容区 ---------- */
.main{
  margin-left:var(--nav-w);
  min-height:100vh;
}
/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  padding:80px 0 60px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  z-index:0;
}
.hero-bg::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(to right, rgba(8,13,26,.97) 0%, rgba(8,13,26,.82) 55%, rgba(8,13,26,.55) 100%);
}
.hero-glow{
  position:absolute;
  top:-80px;right:-60px;
  width:520px;height:520px;
  background:radial-gradient(circle, rgba(46,107,255,.25) 0%, transparent 70%);
  z-index:0;
  pointer-events:none;
}
.hero-grid{
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:60px 60px;
  z-index:1;
  pointer-events:none;
  mask-image:radial-gradient(circle at 65% 50%, black, transparent 70%);
  -webkit-mask-image:radial-gradient(circle at 65% 50%, black, transparent 70%);
}
.container{position:relative;z-index:2}
.hero-content{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.hero-text{max-width:680px}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:500;
  color:var(--accent);
  background:rgba(217,179,108,.08);
  border:1px solid rgba(217,179,108,.25);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:24px;
  letter-spacing:.3px;
}
.hero-eyebrow i{font-size:12px}
.hero-title{
  font-size:clamp(32px,4.2vw,52px);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-1px;
  margin-bottom:24px;
}
.hero-title .accent{
  background:linear-gradient(120deg, var(--primary-hover), #7A9FFF);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-title .gold{
  color:var(--accent);
}
.hero-sub{
  font-size:17px;
  color:var(--text-secondary);
  line-height:1.8;
  margin-bottom:36px;
  max-width:560px;
}
.hero-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
  align-items:center;
}
.btn-primary{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 32px;
  background:linear-gradient(135deg, #1A4DD8, var(--primary));
  color:#fff;
  font-size:16px;
  font-weight:700;
  border-radius:12px;
  box-shadow:0 4px 24px rgba(46,107,255,.35);
  transition:var(--transition);
}
.btn-primary:hover{
  background:linear-gradient(135deg, var(--primary), var(--primary-hover));
  transform:translateY(-2px);
  box-shadow:0 8px 40px rgba(46,107,255,.5);
}
.btn-primary i{font-size:14px;transition:var(--transition)}
.btn-primary:hover i{transform:translateX(4px)}
.btn-secondary{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 28px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-light);
  color:var(--text-primary);
  font-size:16px;
  font-weight:500;
  border-radius:12px;
  backdrop-filter:blur(8px);
  transition:var(--transition);
}
.btn-secondary:hover{
  border-color:var(--primary);
  background:rgba(46,107,255,.1);
  transform:translateY(-2px);
}
.hero-card{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  border:1px solid var(--border-glass);
  background:var(--bg-panel);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
  padding:28px;
}
.hero-card::before{
  content:'';
  position:absolute;
  top:0;left:0;
  width:40%;height:1px;
  background:linear-gradient(to right, rgba(255,255,255,.18), transparent);
}
.hero-card-img{
  position:relative;
  border-radius:16px;
  overflow:hidden;
  margin-bottom:20px;
  aspect-ratio:16/10;
  background:var(--bg-elevated);
}
.hero-card-img img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.hero-card:hover .hero-card-img img{transform:scale(1.04)}
.hero-card-label{
  font-size:12px;
  letter-spacing:2px;
  color:var(--accent);
  text-transform:uppercase;
  font-weight:600;
  margin-bottom:8px;
  font-family:var(--font-mono);
}
.hero-card-title{
  font-size:18px;
  font-weight:700;
  line-height:1.4;
  margin-bottom:10px;
}
.hero-card-desc{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.65;
}
.hero-card-tag{
  display:inline-block;
  margin-top:14px;
  font-size:13px;
  color:var(--primary-hover);
  font-weight:500;
  transition:var(--transition);
}
.hero-card-tag:hover{color:#fff;padding-left:2px}
/* ---------- 理念区 ---------- */
.about .container{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:64px;
  align-items:center;
}
.about-left{max-width:620px}
.about-left p{
  color:var(--text-secondary);
  margin-bottom:20px;
  text-align:justify;
  font-size:15.5px;
}
.about-points{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:32px;
}
.point-item{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:16px;
  border-radius:14px;
  background:rgba(255,255,255,.02);
  border:1px solid var(--border-glass);
  transition:var(--transition);
}
.point-item:hover{
  border-color:rgba(46,107,255,.35);
  background:rgba(46,107,255,.04);
  transform:translateY(-2px);
}
.point-icon{
  width:36px;height:36px;
  flex-shrink:0;
  border-radius:10px;
  background:rgba(46,107,255,.12);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;
  color:var(--primary-hover);
}
.point-text h4{
  font-size:15px;
  font-weight:700;
  margin-bottom:4px;
}
.point-text p{
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:0;
  text-align:left;
}
.about-right{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  aspect-ratio:4/5;
  min-height:440px;
  border:1px solid var(--border-glass);
  box-shadow:var(--shadow-card);
}
.about-right img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.about-right:hover img{transform:scale(1.04)}
.about-right::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(to top, rgba(8,13,26,.6), transparent 60%);
}
.about-quote{
  position:absolute;
  bottom:24px;left:24px;right:24px;
  padding:18px 20px;
  border-radius:14px;
  background:rgba(8,13,26,.7);
  backdrop-filter:blur(12px);
  border:1px solid var(--border-glass);
  z-index:2;
  font-size:14px;
  color:var(--text-primary);
  line-height:1.6;
  border-left:3px solid var(--accent);
}
/* ---------- 精选卡片 ---------- */
.featured-grid{
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:24px;
  align-items:stretch;
}
.feature-card{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--bg-elevated);
  border:1px solid var(--border-glass);
  box-shadow:var(--shadow-card);
  padding:32px;
  transition:var(--transition);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}
.feature-card::before{
  content:'';
  position:absolute;
  top:0;left:0;
  width:45%;height:1px;
  background:linear-gradient(to right, rgba(255,255,255,.18), transparent);
}
.feature-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(46,107,255,.35);
}
.feature-card.large{
  min-height:420px;
  border:1px solid rgba(46,107,255,.25);
  background:linear-gradient(160deg, rgba(15,23,42,.95), rgba(15,23,42,.75));
}
.feature-card.large::after{
  content:'';
  position:absolute;
  top:-40px;right:-40px;
  width:220px;height:220px;
  background:radial-gradient(circle, rgba(46,107,255,.2), transparent 70%);
  pointer-events:none;
}
.feature-card .card-img{
  border-radius:14px;
  overflow:hidden;
  margin-bottom:24px;
  aspect-ratio:16/9;
  position:relative;
}
.feature-card .card-img img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.feature-card:hover .card-img img{transform:scale(1.05)}
.card-icon{
  width:52px;height:52px;
  border-radius:14px;
  background:linear-gradient(135deg, rgba(46,107,255,.2), rgba(46,107,255,.05));
  display:flex;align-items:center;justify-content:center;
  font-size:22px;
  color:var(--primary-hover);
  margin-bottom:20px;
  border:1px solid rgba(46,107,255,.2);
}
.card-label{
  display:inline-block;
  font-size:12px;
  font-family:var(--font-mono);
  color:var(--accent);
  letter-spacing:1px;
  text-transform:uppercase;
  font-weight:600;
  margin-bottom:10px;
}
.card-title{
  font-size:20px;
  font-weight:800;
  line-height:1.35;
  margin-bottom:10px;
}
.card-desc{
  font-size:14.5px;
  color:var(--text-secondary);
  line-height:1.7;
  margin-bottom:24px;
}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--primary-hover);
  margin-top:auto;
  transition:var(--transition);
}
.card-link:hover{gap:12px;color:#fff}
.featured-stack{
  display:grid;
  grid-template-rows:1fr 1fr;
  gap:24px;
}
.feature-card.small{
  min-height:198px;
  padding:24px;
}
.feature-card.small .card-icon{
  width:40px;height:40px;
  font-size:17px;
  margin-bottom:14px;
  border-radius:10px;
}
.feature-card.small .card-title{
  font-size:17px;
}
.feature-card.small .card-desc{
  font-size:13.5px;
  margin-bottom:0;
}
/* ---------- 信任区 ---------- */
.trust{
  background:rgba(255,255,255,.015);
  border-top:1px solid var(--border-glass);
  border-bottom:1px solid var(--border-glass);
  padding:64px 0;
}
.trust-inner{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:20px;
  align-items:center;
  margin-bottom:48px;
}
.trust-logo{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:20px 8px;
  border-radius:12px;
  background:rgba(255,255,255,.02);
  border:1px solid var(--border-glass);
  color:var(--text-muted);
  font-size:15px;
  font-weight:600;
  letter-spacing:.5px;
  filter:grayscale(1);
  opacity:.65;
  transition:var(--transition);
  cursor:default;
}
.trust-logo i{
  font-size:20px;
}
.trust-logo:hover{
  filter:grayscale(0);
  opacity:1;
  color:var(--text-primary);
  border-color:rgba(46,107,255,.3);
  background:rgba(46,107,255,.05);
  transform:translateY(-2px);
}
.trust-stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-item{
  text-align:center;
  padding:24px 12px;
  border-radius:16px;
  background:var(--bg-panel);
  border:1px solid var(--border-glass);
  transition:var(--transition);
}
.stat-item:hover{
  border-color:rgba(46,107,255,.35);
  background:rgba(46,107,255,.04);
  transform:translateY(-3px);
}
.stat-num{
  font-size:36px;
  font-weight:800;
  line-height:1.2;
  background:linear-gradient(120deg, var(--primary-hover), var(--accent));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  font-family:var(--font-mono);
}
.stat-label{
  font-size:14px;
  color:var(--text-secondary);
  margin-top:8px;
}
/* ---------- 最新动态 ---------- */
.news-header{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  margin-bottom:40px;
  flex-wrap:wrap;
  gap:16px;
}
.news-list{
  display:flex;
  flex-direction:column;
  gap:4px;
}
.news-item{
  display:block;
  padding:20px 8px;
  border-radius:8px;
  transition:var(--transition);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.news-item:last-child{border-bottom:none}
.news-item:hover{
  background:rgba(255,255,255,.02);
  padding-left:16px;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:8px;
  flex-wrap:wrap;
}
.badge{
  display:inline-flex;
  align-items:center;
  padding:3px 14px;
  border-radius:999px;
  background:rgba(217,179,108,.08);
  border:1px solid rgba(217,179,108,.25);
  color:var(--accent);
  font-size:12px;
  font-weight:600;
  letter-spacing:.3px;
}
.news-time{
  font-size:13px;
  font-family:var(--font-mono);
  color:var(--text-muted);
  margin-left:auto;
}
.news-title{
  font-size:18px;
  font-weight:700;
  line-height:1.4;
  color:var(--text-primary);
  transition:var(--transition);
}
.news-item:hover .news-title{color:var(--primary-hover)}
.news-excerpt{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.65;
  margin-top:6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  max-width:720px;
}
.news-empty{
  display:flex;
  align-items:center;
  justify-content:center;
  padding:48px 24px;
  border:2px dashed rgba(255,255,255,.12);
  border-radius:16px;
  color:var(--text-muted);
  font-size:15px;
  min-height:180px;
}
.news-empty i{
  font-size:28px;
  margin-right:12px;
  opacity:.4;
}
/* ---------- FAQ ---------- */
.faq-wrap{
  max-width:760px;
  margin:0 auto;
}
.faq-item{
  border:1px solid var(--border-glass);
  border-radius:14px;
  background:var(--bg-panel);
  margin-bottom:14px;
  overflow:hidden;
  transition:var(--transition);
}
.faq-item:hover{
  border-color:rgba(46,107,255,.3);
}
.faq-item.open{
  border-color:rgba(46,107,255,.4);
  box-shadow:0 0 0 1px rgba(46,107,255,.1), 0 8px 24px rgba(0,0,0,.25);
}
.faq-q{
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 24px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--text-primary);
  transition:var(--transition);
  user-select:none;
}
.faq-q:hover{color:var(--primary-hover)}
.faq-icon{
  width:24px;height:24px;
  flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  border-radius:6px;
  border:1px solid var(--border-light);
  color:var(--text-secondary);
  font-size:13px;
  transition:transform .3s ease, background .3s, border-color .3s;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  border-color:var(--primary);
  color:var(--primary-hover);
  background:rgba(46,107,255,.1);
}
.faq-a{
  display:none;
  padding:0 24px 24px 64px;
  font-size:15px;
  color:var(--text-secondary);
  line-height:1.75;
}
.faq-item.open .faq-a{
  display:block;
  animation:fadeIn .35s ease;
}
@keyframes fadeIn{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:translateY(0)}
}
/* ---------- CTA区 ---------- */
.cta-section{
  padding:64px 0 80px;
}
.cta-box{
  position:relative;
  max-width:900px;
  margin:0 auto;
  padding:52px 48px;
  border-radius:var(--radius-xl);
  background:linear-gradient(135deg, rgba(46,107,255,.16), rgba(217,179,108,.08) 50%, rgba(46,107,255,.12));
  border:1px solid rgba(46,107,255,.25);
  text-align:center;
  overflow:hidden;
  box-shadow:0 16px 48px rgba(0,0,0,.35);
}
.cta-box::before{
  content:'';
  position:absolute;
  top:-60px;right:-40px;
  width:260px;height:260px;
  background:radial-gradient(circle, rgba(46,107,255,.3), transparent 70%);
  pointer-events:none;
}
.cta-box::after{
  content:'';
  position:absolute;
  bottom:-60px;left:-40px;
  width:200px;height:200px;
  background:radial-gradient(circle, rgba(217,179,108,.15), transparent 70%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2}
.cta-title{
  font-size:clamp(24px,2.8vw,32px);
  font-weight:800;
  margin-bottom:14px;
}
.cta-desc{
  font-size:15.5px;
  color:var(--text-secondary);
  margin-bottom:32px;
  max-width:520px;
  margin-left:auto;
  margin-right:auto;
}
.cta-form{
  display:flex;
  gap:12px;
  max-width:480px;
  margin:0 auto;
  flex-wrap:wrap;
}
.cta-form input{
  flex:1;
  min-width:220px;
  padding:14px 18px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.05);
  color:var(--text-primary);
  font-size:15px;
  transition:var(--transition);
}
.cta-form input::placeholder{color:var(--text-muted)}
.cta-form input:focus{
  outline:none;
  border-color:var(--primary);
  background:rgba(255,255,255,.08);
  box-shadow:0 0 0 4px rgba(46,107,255,.15);
}
.cta-form .btn-primary{
  padding:14px 28px;
  white-space:nowrap;
  font-size:15px;
}
/* ---------- 页脚 ---------- */
.footer{
  background:#060A13;
  border-top:1px solid var(--border-glass);
  padding:56px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr .8fr 1fr;
  gap:44px;
  padding-bottom:40px;
}
.footer-brand .brand-row{
  margin-bottom:14px;
}
.footer-brand .brand-name{
  font-size:20px;
}
.footer-desc{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.7;
  max-width:280px;
}
.footer-title{
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
  color:var(--text-primary);
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-secondary);
  transition:var(--transition);
}
.footer-links a i{
  font-size:10px;
  color:var(--text-muted);
  transition:var(--transition);
}
.footer-links a:hover{
  color:#fff;
  padding-left:4px;
}
.footer-links a:hover i{
  color:var(--primary-hover);
}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap:12px;
  font-size:14px;
  color:var(--text-secondary);
}
.footer-contact div{
  display:flex;
  align-items:center;
  gap:10px;
}
.footer-contact i{
  width:18px;
  text-align:center;
  color:var(--text-muted);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding-top:24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  font-size:13px;
  color:var(--text-muted);
}
.footer-bottom .mono{
  font-family:var(--font-mono);
  font-size:12px;
}
/* ---------- 响应式 ---------- */
@media (max-width: 992px){
  .side-nav{display:none}
  .top-nav{display:flex}
  .drawer{display:block}
  .main{margin-left:0}
  .hero{min-height:auto;padding:96px 0 48px}
  .hero-content{grid-template-columns:1fr;gap:36px}
  .hero-card{max-width:460px}
  .about .container{grid-template-columns:1fr;gap:40px}
  .featured-grid{grid-template-columns:1fr}
  .featured-stack{grid-template-columns:1fr 1fr;display:grid}
  .trust-inner{grid-template-columns:repeat(3,1fr)}
  .trust-stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 768px){
  :root{--spacer:56px}
  .container{padding:0 20px}
  .hero{padding-top:88px}
  .hero-title{font-size:clamp(28px,5vw,38px)}
  .hero-sub{font-size:16px}
  .hero-actions .btn-primary,.hero-actions .btn-secondary{flex:1;justify-content:center}
  .featured-stack{grid-template-columns:1fr}
  .trust-inner{grid-template-columns:repeat(2,1fr)}
  .trust-stats{grid-template-columns:1fr 1fr;gap:14px}
  .stat-num{font-size:28px}
  .cta-box{padding:40px 24px}
  .cta-form{flex-direction:column}
  .cta-form .btn-primary{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .about-points{grid-template-columns:1fr}
  .news-meta .news-time{margin-left:0}
}
@media (max-width: 480px){
  .container{padding:0 16px}
  .section-title{font-size:26px}
  .hero-actions .btn-primary,.hero-actions .btn-secondary{width:100%}
  .trust-inner{grid-template-columns:1fr 1fr;gap:12px}
  .trust-logo{padding:16px 6px;font-size:13px}
  .stat-num{font-size:24px}
  .cta-desc{font-size:14px}
}
/* ---------- 微交互动效 ---------- */
@media (prefers-reduced-motion: no-preference){
  .hero-card,.feature-card,.stat-item,.point-item,.trust-logo,.faq-item{
    animation: fadeInUp .5s ease both;
  }
  .feature-card.large{animation-delay:.1s}
  .featured-stack .feature-card.small:nth-child(1){animation-delay:.15s}
  .featured-stack .feature-card.small:nth-child(2){animation-delay:.2s}
}
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(18px)}
  to{opacity:1;transform:translateY(0)}
}

/* roulang page: category1 */
:root {
  --bg-deep: #080D1A;
  --bg-panel: rgba(15, 23, 42, 0.72);
  --bg-elevated: #0F172A;
  --primary: #2E6BFF;
  --primary-hover: #58A6FF;
  --accent: #D9B36C;
  --border-glass: rgba(255, 255, 255, 0.08);
  --text-primary: #E7EDF5;
  --text-secondary: #93A1B5;
  --text-muted: #5B6B82;
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--bg-deep); color: var(--text-primary); font-family: var(--font-main); font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body::before { content: ''; position: fixed; inset: 0; background: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)' opacity='0.04'/%3E%3C/svg%3E"); pointer-events: none; z-index: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, button { outline: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }
.mono { font-family: var(--font-mono); }
.text-accent { color: var(--accent); }

/* ===== 左侧导航 ===== */
.sidebar { position: fixed; left: 0; top: 0; width: 264px; height: 100vh; background: #060A13; z-index: 200; display: flex; flex-direction: column; padding: 28px 20px 24px; border-right: 1px solid rgba(255,255,255,0.04); }
.sidebar::after { content: ''; position: absolute; right: 0; top: 0; width: 1px; height: 100%; background: linear-gradient(180deg, transparent, rgba(46,107,255,0.35), transparent); pointer-events: none; }
.sidebar-inner { display: flex; flex-direction: column; height: 100%; }
.brand { padding: 10px 8px 32px; }
.brand-row { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 44px; height: 44px; border-radius: 12px; background: linear-gradient(135deg, var(--primary) 0%, #1A4DD8 100%); display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 800; color: #fff; letter-spacing: 1px; box-shadow: 0 0 24px rgba(46,107,255,0.35); }
.brand-text { display: flex; flex-direction: column; }
.brand-name { font-size: 20px; font-weight: 800; letter-spacing: 2px; line-height: 1.3; }
.brand-domain { font-family: var(--font-mono); font-size: 11px; color: var(--text-muted); letter-spacing: 0.5px; margin-top: 2px; }
.nav-menu { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; flex: 0 0 auto; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 10px; color: #7C8BA0; font-size: 15px; font-weight: 500; position: relative; transition: color .25s ease, transform .25s ease, background .25s ease; }
.nav-item i { width: 20px; text-align: center; font-size: 16px; opacity: 0.85; }
.nav-item:hover { color: #F0F4FA; transform: translateX(2px); background: rgba(46,107,255,0.06); }
.nav-item.active { color: #F0F4FA; background: rgba(46,107,255,0.12); }
.nav-item.active::before { content: ''; position: absolute; left: -20px; top: 12%; height: 76%; width: 3px; border-radius: 0 3px 3px 0; background: var(--primary); box-shadow: 0 0 14px var(--primary); }
.sidebar-footer { margin-top: auto; display: flex; flex-direction: column; gap: 16px; }
.status-card { display: flex; align-items: center; gap: 10px; background: rgba(15,23,42,0.6); border: 1px solid var(--border-glass); border-radius: 10px; padding: 10px 14px; font-size: 13px; color: var(--text-secondary); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #34D399; box-shadow: 0 0 8px rgba(52,211,153,0.7); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.6; transform: scale(0.85); } }

/* ===== 移动端顶部导航 ===== */
.mobile-header { display: none; position: fixed; top: 0; left: 0; right: 0; height: 56px; background: rgba(8,13,26,0.82); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); z-index: 300; align-items: center; padding: 0 16px; border-bottom: 1px solid var(--border-glass); }
.menu-toggle { width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--text-primary); transition: background .2s; }
.menu-toggle:hover { background: rgba(255,255,255,0.08); }
.mobile-brand { flex: 1; text-align: center; font-size: 18px; font-weight: 800; letter-spacing: 2px; }
.mobile-header .btn-sm { padding: 8px 14px; font-size: 13px; border-radius: 8px; }
.mobile-drawer { position: fixed; top: 56px; left: 0; right: 0; background: rgba(8,13,26,0.97); backdrop-filter: blur(16px); z-index: 290; border-bottom: 1px solid var(--border-glass); padding: 16px; display: none; }
.mobile-drawer.open { display: block; }
.drawer-menu { display: flex; flex-direction: column; gap: 4px; }
.drawer-link { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 10px; color: #8A99AF; font-size: 15px; font-weight: 500; transition: all .2s; }
.drawer-link i { width: 20px; text-align: center; }
.drawer-link:hover { color: #F0F4FA; background: rgba(46,107,255,0.08); }
.drawer-link.active { color: var(--primary-hover); background: rgba(46,107,255,0.14); }

/* ===== 主内容区 ===== */
.main-wrap { margin-left: 264px; position: relative; z-index: 1; }
.main-content { position: relative; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 540px; display: flex; align-items: center; padding: 100px 32px 80px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat; z-index: 0; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(100deg, rgba(8,13,26,0.94) 40%, rgba(8,13,26,0.68) 70%, rgba(8,13,26,0.42) 100%); z-index: 1; }
.hero::before { content: ''; position: absolute; top: -20%; right: -10%; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(46,107,255,0.16), transparent 65%); z-index: 1; }
.hero .container { position: relative; z-index: 2; max-width: 1200px; }
.hero-content { max-width: 680px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(217,179,108,0.14); border: 1px solid rgba(217,179,108,0.35); color: var(--accent); font-size: 13px; font-weight: 600; padding: 6px 14px; border-radius: 999px; margin-bottom: 24px; letter-spacing: 1px; }
.hero h1 { font-size: clamp(32px, 4.2vw, 50px); line-height: 1.22; font-weight: 800; letter-spacing: 1px; margin-bottom: 20px; }
.hero p { font-size: 17px; color: var(--text-secondary); line-height: 1.8; max-width: 560px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 15px; font-weight: 600; border-radius: var(--radius-btn); padding: 12px 24px; transition: all .25s ease; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-sm { padding: 8px 16px; font-size: 13px; border-radius: 8px; }
.btn-block { width: 100%; }
.btn-primary { background: linear-gradient(135deg, #1A4DD8, var(--primary)); color: #fff; box-shadow: 0 0 20px rgba(46,107,255,0.3); }
.btn-primary:hover { background: linear-gradient(135deg, #2E6BFF, var(--primary-hover)); box-shadow: 0 0 28px rgba(46,107,255,0.5); transform: translateY(-1px); }
.btn-ghost { background: rgba(255,255,255,0.04); border: 1px solid var(--border-glass); color: var(--text-primary); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: var(--primary); background: rgba(46,107,255,0.1); transform: translateY(-1px); }
.btn-outline { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.14); color: #AAB8CC; }
.btn-outline:hover { border-color: rgba(88,166,255,0.6); color: #F0F4FA; background: rgba(46,107,255,0.08); }
.text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary-hover); font-size: 15px; font-weight: 500; transition: gap .25s ease; }
.text-link:hover { gap: 10px; color: var(--primary); }

/* ===== 通用板块 ===== */
.section { padding: 80px 32px; position: relative; }
.section h2 { font-size: clamp(24px, 2.4vw, 34px); font-weight: 800; letter-spacing: 0.5px; line-height: 1.35; margin-bottom: 16px; }
.section .sec-desc { color: var(--text-secondary); font-size: 16px; max-width: 560px; margin-bottom: 40px; }
.section-header { max-width: 720px; margin-bottom: 48px; }
.section-header.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-header h2 { margin-bottom: 10px; }
.section-header p { color: var(--text-secondary); font-size: 16px; }

/* 导语 */
.intro-section { padding-top: 48px; padding-bottom: 48px; border-bottom: 1px solid transparent; background: transparent; }
.intro-section::after { content: ''; display: block; height: 1px; margin: 48px 0 0; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.14), transparent); }
.lead { font-size: 19px; line-height: 1.9; color: var(--text-primary); max-width: 860px; font-weight: 400; }
.lead strong { color: var(--accent); font-weight: 600; }

/* ===== 图文分栏 ===== */
.split-section { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split-section.reverse .split-text { order: 1; }
.split-section.reverse .split-media { order: 0; }
.split-text h2 { margin-bottom: 24px; }
.split-text p { color: var(--text-secondary); margin-bottom: 18px; line-height: 1.85; }
.split-text .text-link { margin-top: 8px; }
.split-media { position: relative; border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid var(--border-glass); }
.split-media::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(46,107,255,0.06), transparent 50%); pointer-events: none; }
.split-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; transition: transform .5s ease; }
.split-media:hover img { transform: scale(1.03); }
.split-media .media-tag { position: absolute; top: 16px; left: 16px; background: rgba(8,13,26,0.75); backdrop-filter: blur(8px); border: 1px solid var(--border-glass); color: var(--text-primary); font-size: 13px; padding: 4px 12px; border-radius: 999px; z-index: 2; }

/* ===== 流程 ===== */
.flow-section { background: linear-gradient(180deg, rgba(15,23,42,0.25), transparent); }
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px; }
.flow-card { background: var(--bg-panel); border: 1px solid var(--border-glass); border-radius: var(--radius-card); padding: 32px 24px 28px; position: relative; transition: all .3s ease; overflow: hidden; box-shadow: var(--shadow-card); }
.flow-card::before { content: ''; position: absolute; top: 0; left: 24px; right: 24px; height: 1px; background: linear-gradient(90deg, transparent, rgba(46,107,255,0.4), transparent); opacity: 0; transition: opacity .3s; }
.flow-card:hover { border-color: rgba(46,107,255,0.4); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.flow-card:hover::before { opacity: 1; }
.flow-num { font-family: var(--font-mono); font-size: 32px; font-weight: 700; color: var(--primary); opacity: 0.55; margin-bottom: 16px; line-height: 1; }
.flow-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; letter-spacing: 0.3px; }
.flow-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.flow-card .flow-icon { position: absolute; right: 20px; bottom: 16px; font-size: 36px; color: rgba(255,255,255,0.04); }

/* ===== 场景卡片 ===== */
.scenario-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 40px; }
.scenario-card { display: flex; gap: 18px; background: rgba(15,23,42,0.5); border: 1px solid var(--border-glass); border-radius: var(--radius-card); padding: 28px 24px; transition: all .3s ease; }
.scenario-card:hover { border-color: rgba(217,179,108,0.35); background: rgba(15,23,42,0.8); box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.scenario-icon { flex: 0 0 48px; height: 48px; border-radius: 12px; background: linear-gradient(135deg, rgba(46,107,255,0.2), rgba(46,107,255,0.06)); border: 1px solid rgba(46,107,255,0.25); display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--primary-hover); }
.scenario-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.scenario-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { background: linear-gradient(180deg, transparent, rgba(15,23,42,0.3)); }
.faq-section .section-header { margin-bottom: 32px; }
.faq-list { max-width: 760px; margin: 0 auto; border-top: 1px solid var(--border-glass); }
.faq-item { border-bottom: 1px solid var(--border-glass); background: rgba(15,23,42,0.3); transition: background .3s ease; }
.faq-item:first-child { border-top: 1px solid var(--border-glass); }
.faq-item:hover { background: rgba(15,23,42,0.6); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 20px 16px; font-size: 16px; font-weight: 500; color: var(--text-primary); text-align: left; transition: color .2s; gap: 16px; }
.faq-question:hover { color: var(--primary-hover); }
.faq-question .fa-plus { transition: transform .35s ease; color: var(--text-muted); font-size: 14px; flex-shrink: 0; }
.faq-item.open .faq-question { color: var(--primary-hover); }
.faq-item.open .faq-question .fa-plus { transform: rotate(45deg); color: var(--primary-hover); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer-inner { padding: 0 16px 20px; color: var(--text-secondary); font-size: 15px; line-height: 1.8; }

/* ===== CTA ===== */
.cta-section { padding-bottom: 80px; }
.cta-box { max-width: 860px; margin: 0 auto; background: linear-gradient(135deg, rgba(46,107,255,0.18), rgba(217,179,108,0.12)), var(--bg-panel); border: 1px solid rgba(46,107,255,0.3); border-radius: 20px; padding: 56px 48px; text-align: center; position: relative; overflow: hidden; box-shadow: 0 0 60px rgba(46,107,255,0.12); }
.cta-box::before { content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 300px; height: 1px; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent); }
.cta-box h2 { font-size: clamp(24px, 2.6vw, 34px); font-weight: 800; margin-bottom: 12px; }
.cta-box p { color: var(--text-secondary); margin-bottom: 32px; font-size: 16px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.footer { background: #060A13; border-top: 1px solid var(--border-glass); padding: 60px 0 0; position: relative; z-index: 1; }
.footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(46,107,255,0.3), transparent); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .brand-row { margin-bottom: 16px; }
.footer-brand .brand-mark { width: 38px; height: 38px; font-size: 18px; border-radius: 10px; }
.footer-brand .brand-name { font-size: 18px; }
.footer-desc { color: var(--text-secondary); font-size: 14px; line-height: 1.8; max-width: 260px; }
.footer-title { font-size: 15px; font-weight: 700; color: var(--text-primary); margin-bottom: 18px; letter-spacing: 0.5px; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { display: inline-flex; align-items: center; gap: 8px; color: var(--text-secondary); font-size: 14px; transition: all .25s ease; }
.footer-links a i { font-size: 10px; color: var(--text-muted); transition: color .25s ease, transform .25s ease; }
.footer-links a:hover { color: #F0F4FA; }
.footer-links a:hover i { color: var(--primary-hover); transform: translateX(3px); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; color: var(--text-secondary); font-size: 14px; }
.footer-contact div { display: flex; align-items: center; gap: 10px; }
.footer-contact i { width: 16px; text-align: center; color: var(--text-muted); }
.footer-bottom { border-top: 1px solid var(--border-glass); padding: 24px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; color: var(--text-muted); font-size: 13px; }
.footer-bottom .mono { font-size: 12px; letter-spacing: 0.5px; }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .main-wrap { margin-left: 0; }
  .hero { min-height: auto; padding: 100px 20px 64px; }
  .section { padding: 56px 20px; }
  .intro-section { padding-top: 36px; }
  .split-section { grid-template-columns: 1fr; gap: 40px; }
  .split-section.reverse .split-text { order: 0; }
  .split-section.reverse .split-media { order: 1; }
  .split-media img { aspect-ratio: 16 / 10; }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero .container { padding: 0 16px; }
}
@media (max-width: 768px) {
  .scenario-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 40px 24px; }
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 15px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section h2 { font-size: 26px; }
}
@media (max-width: 480px) {
  .main-content { padding-top: 0; }
  .hero { padding: 88px 16px 48px; }
  .hero-actions { width: 100%; }
  .hero-actions .btn { flex: 1 1 100%; }
  .flow-grid { grid-template-columns: 1fr; }
  .btn { padding: 12px 20px; }
  .section { padding: 48px 16px; }
  .lead { font-size: 17px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: article */
:root {
  --bg-deep: #080D1A;
  --bg-panel: rgba(15, 23, 42, 0.72);
  --bg-elevated: #0F172A;
  --primary: #2E6BFF;
  --primary-hover: #58A6FF;
  --accent: #D9B36C;
  --border-glass: rgba(255,255,255,0.08);
  --text-primary: #E7EDF5;
  --text-secondary: #93A1B5;
  --text-muted: #5B6B82;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 24px rgba(0,0,0,0.35);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.5);
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", Consolas, monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main); background: var(--bg-deep);
  color: var(--text-primary); line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; color: inherit; font-family: inherit; }
input { border: none; outline: none; background: none; color: inherit; font-family: inherit; }
i { font-style: normal; }
.mono { font-family: var(--font-mono); }

/* ---------- 左侧竖向导航（桌面端） ---------- */
.sidebar {
  position: fixed; top: 0; left: 0; width: 264px; height: 100vh;
  background: #060A13; display: flex; flex-direction: column;
  padding: 28px 20px 20px; z-index: 100;
  border-right: 1px solid rgba(255,255,255,0.04);
}
.sidebar::after {
  content: ''; position: absolute; right: -1px; top: 0; width: 1px; height: 100%;
  background: linear-gradient(to bottom, transparent, rgba(46,107,255,0.35), transparent);
}
.sidebar-brand { display: flex; align-items: center; gap: 12px; padding-bottom: 8px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #1A4DD8);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800; color: #fff;
  box-shadow: 0 0 20px rgba(46,107,255,0.4);
}
.brand-name { font-size: 20px; font-weight: 800; letter-spacing: 2px; }
.brand-domain { font-family: var(--font-mono); font-size: 11px; color: var(--text-muted); padding-left: 52px; margin-bottom: 30px; }
.nav-menu { display: flex; flex-direction: column; gap: 8px; flex: 1; }
.nav-item {
  display: flex; align-items: center; gap: 12px; padding: 12px 14px;
  border-radius: 10px; color: var(--text-secondary);
  font-size: 15px; font-weight: 500; transition: all 0.3s ease;
  position: relative; border: 1px solid transparent;
}
.nav-item i { width: 18px; text-align: center; color: var(--text-muted); transition: color 0.3s ease; }
.nav-item:hover { color: var(--text-primary); background: rgba(46,107,255,0.08); border-color: rgba(46,107,255,0.12); }
.nav-item:hover i { color: var(--primary-hover); }
.nav-item.active {
  color: #F0F4FA; background: rgba(46,107,255,0.12);
  border-color: rgba(46,107,255,0.18);
}
.sidebar .nav-item.active::before {
  content: ''; position: absolute; left: -20px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 20px; background: var(--primary);
  box-shadow: 0 0 12px var(--primary); border-radius: 3px;
}
.nav-item.active i { color: var(--primary-hover); }
.sidebar-bottom { display: flex; flex-direction: column; gap: 16px; }
.btn-login {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px; border-radius: var(--radius-sm);
  background: rgba(46,107,255,0.12); border: 1px solid rgba(46,107,255,0.4);
  color: var(--text-primary); font-size: 14px; font-weight: 600;
  transition: all 0.3s ease;
}
.btn-login:hover { background: rgba(46,107,255,0.24); box-shadow: 0 0 20px rgba(46,107,255,0.2); }
.status-card {
  background: var(--bg-panel); border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm); padding: 14px 14px;
  font-size: 12px; color: var(--text-muted); line-height: 1.6;
  position: relative; overflow: hidden;
}
.status-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.status-dot {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: #4ADE80; margin-right: 6px; box-shadow: 0 0 6px rgba(74,222,128,0.6);
  vertical-align: middle;
}

/* ---------- 移动端导航 ---------- */
.mobile-header { display: none; }
.mobile-drawer { display: none; }
.mobile-overlay { display: none; }

/* ---------- 布局 ---------- */
.main-wrapper { margin-left: 264px; min-height: 100vh; display: flex; flex-direction: column; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; width: 100%; }

/* ---------- 文章页 ---------- */
.article-page { padding-top: 48px; padding-bottom: 80px; flex: 1; }
.breadcrumb {
  font-size: 13px; color: var(--text-muted); display: flex;
  align-items: center; gap: 10px; margin-bottom: 32px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-secondary); transition: color 0.3s ease; }
.breadcrumb a:hover { color: var(--primary-hover); }
.breadcrumb .sep { color: var(--text-muted); opacity: 0.6; }
.breadcrumb .current { color: var(--text-secondary); max-width: 340px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.article-header {
  position: relative; border-radius: 20px; overflow: hidden;
  padding: 56px 48px 48px; margin-bottom: 48px;
  background-image: linear-gradient(135deg, rgba(8,13,26,0.94), rgba(15,23,42,0.78)), url('/assets/images/backpic/back-2.png');
  background-size: cover; background-position: center;
  border: 1px solid var(--border-glass);
}
.article-header::after {
  content: ''; position: absolute; top: -70px; right: -50px; width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(46,107,255,0.25), transparent 70%);
  border-radius: 50%; pointer-events: none;
}
.article-cat-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 999px;
  border: 1px solid rgba(217,179,108,0.4);
  color: var(--accent); font-size: 13px; font-weight: 600;
  background: rgba(217,179,108,0.08); margin-bottom: 20px;
}
.article-header h1 {
  font-size: clamp(28px, 3vw, 36px); font-weight: 800; line-height: 1.3;
  max-width: 760px; color: var(--text-primary); letter-spacing: 0.5px;
}
.article-meta {
  display: flex; flex-wrap: wrap; gap: 16px; align-items: center;
  margin-top: 24px; font-size: 13px; color: var(--text-muted);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--accent); width: 14px; text-align: center; }
.article-meta .meta-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--text-muted); display: inline-block; }

.article-content {
  max-width: 720px; margin: 0 auto; padding: 0 0 24px;
  font-size: 16px; line-height: 1.8; color: var(--text-secondary);
}
.article-content p { margin-bottom: 24px; text-align: justify; letter-spacing: 0.2px; }
.article-content h2 {
  font-size: 24px; font-weight: 700; color: var(--text-primary);
  margin: 44px 0 16px; padding-bottom: 12px; position: relative;
}
.article-content h2::after {
  content: ''; position: absolute; left: 0; bottom: 0; width: 44px; height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent); border-radius: 2px;
}
.article-content h3 {
  font-size: 20px; font-weight: 700; color: var(--text-primary);
  margin: 34px 0 12px;
}
.article-content h4 {
  font-size: 17px; font-weight: 700; color: var(--text-primary);
  margin: 28px 0 10px;
}
.article-content a { color: var(--primary-hover); border-bottom: 1px solid rgba(88,166,255,0.3); transition: all 0.3s ease; }
.article-content a:hover { border-bottom-color: var(--primary-hover); }
.article-content ul, .article-content ol { margin: 0 0 24px; padding-left: 24px; }
.article-content li { margin-bottom: 10px; }
.article-content li::marker { color: var(--accent); }
.article-content blockquote {
  border-left: 3px solid var(--primary);
  background: rgba(46,107,255,0.06);
  padding: 18px 24px; border-radius: 0 12px 12px 0;
  margin: 28px 0; color: var(--text-secondary);
}
.article-content blockquote p { margin-bottom: 0; }
.article-content img { border-radius: 16px; margin: 28px 0; box-shadow: var(--shadow); }
.article-content figure { margin: 28px 0; }
.article-content figcaption { font-size: 13px; color: var(--text-muted); text-align: center; margin-top: 12px; }
.article-content code {
  font-family: var(--font-mono); font-size: 13px;
  background: rgba(46,107,255,0.12); color: var(--primary-hover);
  padding: 3px 7px; border-radius: 5px;
}
.article-content pre {
  background: #0A0F1C; border: 1px solid var(--border-glass);
  border-radius: 12px; padding: 22px; overflow-x: auto; margin-bottom: 24px;
}
.article-content pre code { background: none; padding: 0; font-size: 13px; }
.article-content hr { border: none; height: 1px; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.14), transparent); margin: 40px 0; }
.article-content table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 14px; }
.article-content th, .article-content td { padding: 12px 14px; border: 1px solid var(--border-glass); text-align: left; }
.article-content th { background: var(--bg-elevated); color: var(--text-primary); font-weight: 600; }

.not-found {
  max-width: 720px; margin: 0 auto; background: var(--bg-panel);
  border: 1px dashed var(--border-glass); border-radius: 20px;
  padding: 64px 32px; text-align: center;
}
.not-found .notfound-icon {
  width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(46,107,255,0.08); border: 1px solid rgba(46,107,255,0.2);
  font-size: 26px; color: var(--primary-hover);
}
.not-found h2 { font-size: 22px; color: var(--text-primary); margin-bottom: 12px; }
.not-found p { color: var(--text-muted); margin-bottom: 28px; font-size: 14px; }

.btn-primary, .btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600; transition: all 0.3s ease;
}
.btn-primary {
  background: linear-gradient(135deg, #1A4DD8, var(--primary));
  color: #fff; box-shadow: 0 4px 16px rgba(46,107,255,0.3);
}
.btn-primary:hover { box-shadow: 0 0 28px rgba(46,107,255,0.5); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible, .btn-secondary:focus-visible, .nav-item:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-secondary {
  border: 1px solid var(--border-glass); color: var(--text-secondary);
  background: rgba(255,255,255,0.03); font-weight: 500;
}
.btn-secondary:hover { border-color: var(--primary); color: var(--text-primary); background: rgba(46,107,255,0.06); }

.article-nav {
  max-width: 720px; margin: 24px auto 56px;
  display: flex; flex-wrap: wrap; gap: 16px;
  padding-top: 32px; border-top: 1px solid linear-gradient(90deg, transparent, rgba(255,255,255,0.14), transparent);
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* ---------- 相关推荐 ---------- */
.related-section { padding-top: 12px; }
.related-head { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.related-head h2 {
  font-size: 22px; font-weight: 700; color: var(--text-primary);
  display: flex; align-items: center; gap: 12px;
}
.related-head h2::before {
  content: ''; width: 4px; height: 20px; border-radius: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}
.related-head p { font-size: 13px; color: var(--text-muted); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  background: var(--bg-panel); border: 1px solid var(--border-glass);
  border-radius: var(--radius); overflow: hidden;
  transition: all 0.35s ease; position: relative;
}
.related-card:hover {
  transform: translateY(-4px); border-color: rgba(46,107,255,0.35);
  box-shadow: var(--shadow-lg);
}
.related-card .thumb { height: 170px; overflow: hidden; position: relative; display: block; }
.related-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .thumb img { transform: scale(1.05); }
.related-card .thumb::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(8,13,26,0.45), transparent 65%);
}
.related-card .thumb .card-tag {
  position: absolute; left: 14px; bottom: 12px; z-index: 2;
  padding: 4px 10px; border-radius: 999px;
  background: rgba(8,13,26,0.6); border: 1px solid rgba(217,179,108,0.4);
  color: var(--accent); font-size: 12px; font-weight: 600;
  backdrop-filter: blur(4px);
}
.related-card .card-body { padding: 20px 20px 24px; }
.related-card h3 { font-size: 16px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; line-height: 1.45; }
.related-card h3 a { transition: color 0.3s ease; }
.related-card h3 a:hover { color: var(--primary-hover); }
.related-card p { font-size: 13px; color: var(--text-muted); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-size: 13px; color: var(--primary-hover); font-weight: 500; transition: all 0.3s ease; }
.related-card .card-link i { font-size: 11px; transition: transform 0.3s ease; }
.related-card:hover .card-link i { transform: translateX(4px); }

/* ---------- 页脚 ---------- */
.footer {
  background: #060A13; border-top: 1px solid rgba(255,255,255,0.04);
  padding: 56px 0 24px; margin-top: auto; position: relative;
}
.footer::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(217,179,108,0.3), transparent);
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.05);
}
.footer-brand .brand-row { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-brand .brand-mark { width: 36px; height: 36px; font-size: 16px; }
.footer-desc { font-size: 13px; color: var(--text-muted); max-width: 280px; line-height: 1.8; }
.footer-title { font-size: 15px; color: var(--text-primary); margin-bottom: 18px; font-weight: 700; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { font-size: 14px; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 8px; transition: all 0.3s ease; }
.footer-links a i { font-size: 10px; color: var(--text-muted); transition: all 0.3s ease; }
.footer-links a:hover { color: var(--text-primary); }
.footer-links a:hover i { color: var(--primary-hover); transform: translateX(3px); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; font-size: 14px; color: var(--text-secondary); }
.footer-contact div { display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  padding-top: 24px; font-size: 12px; color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ---------- 移动端抽屉 ---------- */
.mobile-header {
  position: fixed; top: 0; left: 0; right: 0; height: 56px;
  background: rgba(6,10,19,0.82); backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-glass);
  display: none; align-items: center; justify-content: space-between;
  padding: 0 16px; z-index: 200;
}
.mobile-header .hamburger { font-size: 20px; color: var(--text-primary); width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 8px; transition: background 0.3s ease; }
.mobile-header .hamburger:hover { background: rgba(255,255,255,0.06); }
.mobile-header .mobile-brand { font-size: 18px; font-weight: 800; letter-spacing: 1px; }
.mobile-header .btn-login-sm {
  padding: 8px 16px; border-radius: 8px;
  background: rgba(46,107,255,0.15); border: 1px solid rgba(46,107,255,0.4);
  color: var(--text-primary); font-size: 13px; font-weight: 600; transition: all 0.3s ease;
}
.mobile-header .btn-login-sm:hover { background: rgba(46,107,255,0.28); }
.mobile-drawer {
  position: fixed; top: 0; left: 0; bottom: 0; width: 286px;
  background: #060A13; z-index: 300;
  transform: translateX(-100%); transition: transform 0.35s ease;
  flex-direction: column; padding: 24px 16px; overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 24px; border-bottom: 1px solid rgba(255,255,255,0.06); margin-bottom: 20px; }
.drawer-brand .brand-mark { width: 36px; height: 36px; font-size: 16px; }
.mobile-drawer .nav-menu { padding-top: 8px; }
.mobile-drawer .nav-item.active::before { left: -16px; }
.mobile-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 250;
  opacity: 0; pointer-events: none; transition: opacity 0.3s ease;
}
.mobile-overlay.show { opacity: 1; pointer-events: auto; }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
  .sidebar { display: none; }
  .main-wrapper { margin-left: 0; }
  .mobile-header { display: flex; }
  .mobile-drawer { display: flex; }
  .mobile-overlay { display: block; }
  .article-page { padding-top: 104px; }
  .container { padding: 0 20px; }
}
@media (max-width: 768px) {
  .article-header { padding: 40px 24px; }
  .article-header h1 { font-size: 26px; }
  .related-grid { grid-template-columns: 1fr; }
  .related-card .thumb { height: 200px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .article-nav { flex-direction: column; }
  .article-nav .btn-primary, .article-nav .btn-secondary { justify-content: center; }
  .breadcrumb { font-size: 12px; }
  .article-content { font-size: 15px; }
  .article-content p { text-align: left; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .article-page { padding-top: 96px; padding-bottom: 56px; }
  .article-header { padding: 32px 20px; border-radius: 16px; }
  .article-header h1 { font-size: 22px; }
  .article-meta { gap: 10px; font-size: 12px; }
  .article-meta .meta-dot { display: none; }
  .related-head { flex-direction: column; align-items: flex-start; }
  .btn-primary, .btn-secondary { width: 100%; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* roulang page: category2 */
:root {
      --bg-deep: #080D1A;
      --bg-sidebar: #060A13;
      --bg-panel: rgba(15, 23, 42, 0.72);
      --bg-elevated: #0F172A;
      --primary: #2E6BFF;
      --primary-hover: #58A6FF;
      --primary-deep: #1A4DD8;
      --accent: #D9B36C;
      --border-glass: rgba(255, 255, 255, 0.08);
      --text-primary: #E7EDF5;
      --text-secondary: #93A1B5;
      --text-muted: #5B6B82;
      --radius: 16px;
      --radius-btn: 10px;
      --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
      --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
      --sidebar-width: 264px;
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
      --font-mono: "JetBrains Mono", Consolas, monospace;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-family);
      background: var(--bg-deep);
      color: var(--text-primary);
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      background-image: radial-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px);
      background-size: 24px 24px;
    }

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

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

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
      color: inherit;
    }

    input {
      font-family: inherit;
    }

    .mono {
      font-family: var(--font-mono);
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 32px;
    }

    /* ========== 左侧导航（桌面端） ========== */
    .sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: var(--sidebar-width);
      height: 100vh;
      background: var(--bg-sidebar);
      z-index: 100;
      display: flex;
      flex-direction: column;
      overflow-y: auto;
      border-right: 1px solid rgba(255, 255, 255, 0.04);
      background-image: linear-gradient(180deg, rgba(46, 107, 255, 0.06) 0%, transparent 30%);
    }

    .sidebar::after {
      content: "";
      position: absolute;
      top: 0;
      right: -1px;
      width: 1px;
      height: 100%;
      background: linear-gradient(180deg, transparent, rgba(46, 107, 255, 0.4), rgba(255, 255, 255, 0.05), transparent);
    }

    .brand-row {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 28px 28px 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      background: linear-gradient(135deg, var(--primary), var(--primary-deep));
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 800;
      color: #fff;
      box-shadow: 0 0 24px rgba(46, 107, 255, 0.4);
    }

    .brand-name {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: 1px;
    }

    .brand-domain {
      padding: 6px 28px 0;
      font-size: 11px;
      color: var(--text-muted);
      letter-spacing: 0.5px;
    }

    .nav-menu {
      display: flex;
      flex-direction: column;
      gap: 6px;
      padding: 40px 16px;
      flex: 0 0 auto;
    }

    .nav-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 11px 14px;
      border-radius: 10px;
      color: var(--text-secondary);
      font-size: 15px;
      font-weight: 500;
      transition: all 0.25s ease;
      position: relative;
    }

    .nav-item i {
      width: 20px;
      text-align: center;
      font-size: 15px;
      opacity: 0.9;
    }

    .nav-item:hover {
      color: #F0F4FA;
      transform: translateX(2px);
      background: rgba(46, 107, 255, 0.08);
    }

    .nav-item.active {
      color: #F0F4FA;
      background: linear-gradient(90deg, rgba(46, 107, 255, 0.15), transparent);
    }

    .nav-item.active::before {
      content: "";
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 2px;
      height: 22px;
      border-radius: 2px;
      background: var(--primary);
      box-shadow: 0 0 14px rgba(46, 107, 255, 0.8);
    }

    .sidebar-footer {
      margin-top: auto;
      padding: 20px 20px 28px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .glass-btn {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 11px 14px;
      border-radius: 12px;
      border: 1px solid rgba(255, 255, 255, 0.12);
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-primary);
      font-weight: 600;
      transition: all 0.25s ease;
      backdrop-filter: blur(8px);
      font-size: 14px;
    }

    .glass-btn:hover {
      border-color: rgba(46, 107, 255, 0.5);
      color: #fff;
      box-shadow: 0 0 18px rgba(46, 107, 255, 0.2);
    }

    .status-card {
      padding: 12px 14px;
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-glass);
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    .status-dot {
      display: inline-block;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #34d399;
      box-shadow: 0 0 8px #34d399;
      margin-right: 6px;
    }

    /* ========== 内容区 ========== */
    .content {
      margin-left: var(--sidebar-width);
      min-height: 100vh;
    }

    /* ========== 移动端顶部导航 ========== */
    .mobile-header {
      display: none;
    }

    .drawer {
      display: none;
    }

    /* ========== 页面 Hero ========== */
    .page-hero {
      position: relative;
      padding: 96px 0 72px;
      background: linear-gradient(100deg, rgba(8, 13, 26, 0.97) 30%, rgba(8, 13, 26, 0.75)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      border-bottom: 1px solid var(--border-glass);
      overflow: hidden;
    }

    .page-hero .grid-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-image: linear-gradient(rgba(46, 107, 255, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(46, 107, 255, 0.06) 1px, transparent 1px);
      background-size: 44px 44px;
      pointer-events: none;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      top: -120px;
      right: -80px;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(46, 107, 255, 0.15), transparent 70%);
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 2;
      max-width: 920px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 999px;
      border: 1px solid rgba(217, 179, 108, 0.4);
      color: var(--accent);
      font-size: 13px;
      background: rgba(217, 179, 108, 0.06);
      margin-bottom: 24px;
      letter-spacing: 0.5px;
    }

    .hero-title {
      font-size: clamp(30px, 3.6vw, 44px);
      line-height: 1.22;
      font-weight: 800;
      letter-spacing: 0.5px;
    }

    .hero-title .accent-text {
      color: var(--accent);
    }

    .hero-sub {
      max-width: 680px;
      color: var(--text-secondary);
      font-size: 16px;
      line-height: 1.8;
      margin: 24px 0 34px;
    }

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

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 26px;
      border-radius: var(--radius-btn);
      background: linear-gradient(135deg, var(--primary-deep), var(--primary));
      color: #fff;
      font-weight: 600;
      font-size: 15px;
      transition: all 0.25s ease;
      box-shadow: 0 4px 18px rgba(46, 107, 255, 0.3);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary), var(--primary-hover));
      box-shadow: 0 0 28px rgba(46, 107, 255, 0.4);
      transform: translateY(-2px);
      color: #fff;
    }

    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: var(--radius-btn);
      border: 1px solid rgba(255, 255, 255, 0.14);
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-primary);
      font-weight: 600;
      font-size: 15px;
      transition: all 0.25s ease;
    }

    .btn-ghost:hover {
      border-color: var(--primary);
      color: #fff;
      box-shadow: 0 0 18px rgba(46, 107, 255, 0.2);
    }

    .hero-meta {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 34px;
    }

    .hero-meta i {
      color: var(--primary-hover);
      margin-right: 6px;
    }

    /* ========== 通用区块 ========== */
    .section {
      padding: 80px 0;
    }

    .section-head {
      margin-bottom: 36px;
    }

    .section-kicker {
      font-family: var(--font-mono);
      font-size: 13px;
      color: var(--accent);
      letter-spacing: 1px;
      display: block;
      margin-bottom: 8px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: clamp(24px, 2.4vw, 32px);
      font-weight: 800;
      line-height: 1.3;
    }

    .section-desc {
      color: var(--text-secondary);
      margin-top: 12px;
      max-width: 720px;
      font-size: 15px;
    }

    /* ========== 平台入口卡片（非对称） ========== */
    .entry-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr;
      grid-template-rows: 1fr 1fr;
      gap: 24px;
    }

    .entry-card {
      border-radius: var(--radius);
      padding: 30px;
      background: var(--bg-panel);
      border: 1px solid var(--border-glass);
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
      backdrop-filter: blur(8px);
    }

    .entry-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 40%;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1));
    }

    .entry-card::after {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 40%;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08));
    }

    .entry-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(46, 107, 255, 0.35);
    }

    .entry-card.featured {
      border-color: rgba(46, 107, 255, 0.45);
      box-shadow: 0 0 0 1px rgba(46, 107, 255, 0.2), var(--shadow);
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(46, 107, 255, 0.08));
    }

    .entry-icon {
      width: 46px;
      height: 46px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--accent);
      background: rgba(217, 179, 108, 0.12);
      border: 1px solid rgba(217, 179, 108, 0.2);
      margin-bottom: 16px;
    }

    .entry-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .entry-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .entry-more {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      color: var(--primary-hover);
      margin-top: 14px;
      font-weight: 500;
      transition: all 0.25s ease;
    }

    .entry-more:hover {
      gap: 10px;
      color: #fff;
    }

    /* ========== 图文混排 ========== */
    .feature-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
      padding: 64px 0;
    }

    .feature-img img {
      border-radius: 20px;
      box-shadow: var(--shadow);
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .feature-img img:hover {
      transform: scale(1.02);
    }

    .feature-copy .kicker {
      font-family: var(--font-mono);
      color: var(--accent);
      font-size: 13px;
      letter-spacing: 1px;
      text-transform: uppercase;
    }

    .feature-copy h2 {
      font-size: clamp(22px, 2.2vw, 30px);
      margin: 14px 0 18px;
      font-weight: 800;
      line-height: 1.35;
    }

    .feature-copy p {
      color: var(--text-secondary);
      margin-bottom: 16px;
      font-size: 15px;
    }

    .feature-list {
      margin-top: 8px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .feature-point {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      font-size: 15px;
    }

    .feature-point i {
      color: var(--primary-hover);
      margin-top: 4px;
      flex: 0 0 14px;
    }

    /* ========== 流程步骤 ========== */
    .steps-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .step-card {
      position: relative;
      padding: 26px;
      border-radius: var(--radius);
      background: var(--bg-panel);
      border: 1px solid var(--border-glass);
      transition: all 0.3s ease;
    }

    .step-card:hover {
      transform: translateY(-4px);
      border-color: rgba(46, 107, 255, 0.35);
      box-shadow: var(--shadow-hover);
    }

    .step-num {
      font-family: var(--font-mono);
      font-size: 13px;
      color: var(--accent);
      letter-spacing: 1px;
    }

    .step-card h3 {
      font-size: 17px;
      margin: 10px 0 8px;
      font-weight: 700;
    }

    .step-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    .step-arrow {
      position: absolute;
      right: -16px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--primary);
      font-size: 14px;
      z-index: 2;
      background: var(--bg-deep);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    /* ========== 适用场景 ========== */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scenario-card {
      padding: 28px;
      border-radius: var(--radius);
      background: var(--bg-panel);
      border: 1px solid var(--border-glass);
      transition: all 0.3s ease;
      backdrop-filter: blur(8px);
    }

    .scenario-card:hover {
      transform: translateY(-4px);
      border-color: rgba(46, 107, 255, 0.35);
      box-shadow: var(--shadow-hover);
    }

    .scenario-tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 12px;
      color: var(--accent);
      border: 1px solid rgba(217, 179, 108, 0.3);
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }

    .scenario-card h3 {
      font-size: 17px;
      margin-bottom: 10px;
      font-weight: 700;
    }

    .scenario-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ========== FAQ ========== */
    .faq-wrap {
      max-width: 760px;
      margin: 0 auto;
    }

    .faq-item {
      border: 1px solid var(--border-glass);
      border-radius: 14px;
      margin-bottom: 14px;
      background: var(--bg-panel);
      overflow: hidden;
      transition: border-color 0.25s ease;
      backdrop-filter: blur(8px);
    }

    .faq-item:hover {
      border-color: rgba(46, 107, 255, 0.3);
    }

    .faq-q {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      padding: 18px 20px;
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
      user-select: none;
    }

    .faq-icon {
      flex: 0 0 18px;
      width: 18px;
      height: 18px;
      position: relative;
      transition: transform 0.3s ease;
    }

    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--accent);
      border-radius: 2px;
    }

    .faq-icon::before {
      width: 14px;
      height: 2px;
      top: 8px;
      left: 2px;
    }

    .faq-icon::after {
      width: 2px;
      height: 14px;
      top: 2px;
      left: 8px;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }

    .faq-a {
      display: none;
      padding: 0 20px 20px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      border-top: 1px solid transparent;
    }

    .faq-item.open .faq-a {
      display: block;
      border-top-color: var(--border-glass);
      padding-top: 14px;
    }

    /* ========== 相关内容推荐 ========== */
    .reco-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .reco-card {
      border-radius: var(--radius);
      overflow: hidden;
      background: var(--bg-elevated);
      border: 1px solid var(--border-glass);
      transition: all 0.3s ease;
    }

    .reco-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(46, 107, 255, 0.35);
    }

    .reco-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }

    .reco-body {
      padding: 22px;
    }

    .reco-sub {
      font-size: 12px;
      color: var(--accent);
      margin-bottom: 6px;
      letter-spacing: 0.5px;
    }

    .reco-card h3 {
      font-size: 18px;
      margin-bottom: 8px;
      font-weight: 700;
    }

    .reco-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* ========== CTA ========== */
    .cta-section {
      padding: 20px 0 80px;
    }

    .cta-box {
      position: relative;
      border-radius: 20px;
      padding: 52px 40px;
      background: linear-gradient(120deg, rgba(26, 77, 216, 0.25), rgba(217, 179, 108, 0.12)), rgba(15, 23, 42, 0.88);
      border: 1px solid rgba(46, 107, 255, 0.2);
      text-align: center;
      overflow: hidden;
      backdrop-filter: blur(8px);
    }

    .cta-box::before {
      content: "";
      position: absolute;
      top: -60px;
      left: 50%;
      transform: translateX(-50%);
      width: 260px;
      height: 120px;
      background: radial-gradient(ellipse, rgba(46, 107, 255, 0.25), transparent 70%);
      pointer-events: none;
    }

    .cta-box h2 {
      font-size: clamp(22px, 2.4vw, 30px);
      font-weight: 800;
      margin-bottom: 12px;
      position: relative;
    }

    .cta-box p {
      color: var(--text-secondary);
      margin-bottom: 28px;
      font-size: 15px;
      position: relative;
    }

    .cta-form {
      display: flex;
      gap: 12px;
      justify-content: center;
      flex-wrap: wrap;
      position: relative;
    }

    .cta-input {
      flex: 1;
      min-width: 240px;
      max-width: 340px;
      padding: 12px 18px;
      border-radius: var(--radius-btn);
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: var(--text-primary);
      font-size: 14px;
      transition: all 0.25s ease;
    }

    .cta-input::placeholder {
      color: var(--text-muted);
    }

    .cta-input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.15);
    }

    /* ========== 页脚 ========== */
    .footer {
      background: #060A13;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      margin-left: var(--sidebar-width);
      position: relative;
    }

    .footer::before {
      content: "";
      position: absolute;
      top: -1px;
      left: 0;
      width: 100%;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(46, 107, 255, 0.5), rgba(255, 255, 255, 0.1), transparent);
    }

    .footer .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 56px 32px 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 48px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .footer-brand .brand-row {
      padding: 0;
      margin-bottom: 14px;
    }

    .footer-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 320px;
    }

    .footer-title {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-primary);
      letter-spacing: 0.5px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      font-size: 14px;
      color: var(--text-secondary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: all 0.25s ease;
    }

    .footer-links a i {
      font-size: 10px;
      color: var(--text-muted);
    }

    .footer-links a:hover {
      color: #fff;
      padding-left: 4px;
    }

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

    .footer-contact {
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 14px;
      color: var(--text-secondary);
    }

    .footer-contact i {
      color: var(--primary-hover);
      width: 18px;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      padding-top: 24px;
      font-size: 13px;
      color: var(--text-muted);
    }

    .footer-bottom .mono {
      font-size: 12px;
      letter-spacing: 0.5px;
    }

    /* ========== 响应式 ========== */
    @media (max-width: 1100px) {
      .page-hero {
        padding: 80px 0 60px;
      }

      .feature-block {
        gap: 36px;
      }

      .steps-wrap {
        grid-template-columns: repeat(2, 1fr);
      }

      .step-arrow {
        display: none;
      }
    }

    @media (max-width: 992px) {
      .sidebar {
        display: none;
      }

      .mobile-header {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 56px;
        background: rgba(8, 13, 26, 0.88);
        backdrop-filter: blur(12px);
        align-items: center;
        justify-content: space-between;
        padding: 0 16px;
        z-index: 200;
        border-bottom: 1px solid var(--border-glass);
      }

      .mobile-hamburger {
        font-size: 20px;
        color: var(--text-primary);
        padding: 8px;
        border-radius: 8px;
        transition: background 0.25s;
      }

      .mobile-hamburger:hover {
        background: rgba(255, 255, 255, 0.06);
      }

      .mobile-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 17px;
        font-weight: 800;
        letter-spacing: 1px;
      }

      .mobile-brand .mini-mark {
        width: 30px;
        height: 30px;
        border-radius: 8px;
        background: linear-gradient(135deg, var(--primary), var(--primary-deep));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        font-weight: 800;
        color: #fff;
        box-shadow: 0 0 14px rgba(46, 107, 255, 0.4);
      }

      .mobile-login {
        font-size: 13px;
        font-weight: 600;
        color: var(--text-primary);
        padding: 8px 14px;
        border: 1px solid rgba(255, 255, 255, 0.14);
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.04);
        display: flex;
        align-items: center;
        gap: 6px;
        transition: border-color 0.25s;
      }

      .mobile-login:hover {
        border-color: rgba(46, 107, 255, 0.5);
      }

      .drawer {
        position: fixed;
        top: 56px;
        left: 0;
        width: 100%;
        background: #0a1020;
        border-bottom: 1px solid var(--border-glass);
        padding: 20px 16px;
        z-index: 199;
        box-shadow: var(--shadow);
        display: none;
        flex-direction: column;
        gap: 6px;
      }

      .drawer.open {
        display: flex;
      }

      .drawer .nav-item {
        width: 100%;
        font-size: 15px;
      }

      .content {
        margin-left: 0;
        padding-top: 56px;
      }

      .footer {
        margin-left: 0;
      }

      .footer .container {
        padding-left: 24px;
        padding-right: 24px;
      }

      .entry-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
      }

      .entry-card.featured {
        grid-column: auto;
      }

      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .section {
        padding: 56px 0;
      }

      .container {
        padding: 0 20px;
      }

      .page-hero {
        padding: 64px 0 48px;
      }

      .hero-actions .btn-primary,
      .hero-actions .btn-ghost {
        width: 100%;
      }

      .feature-block {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 40px 0;
      }

      .feature-img img {
        aspect-ratio: 16 / 10;
      }

      .steps-wrap {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
      }

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

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

      .cta-box {
        padding: 40px 24px;
      }

      .cta-form {
        flex-direction: column;
      }

      .cta-input {
        max-width: none;
        width: 100%;
      }

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

      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding: 0 16px;
      }

      .footer .container {
        padding: 40px 16px 24px;
      }

      .entry-grid {
        gap: 16px;
      }

      .entry-card {
        padding: 24px;
      }

      .steps-wrap {
        grid-template-columns: 1fr;
      }

      .cta-box {
        padding: 36px 20px;
        border-radius: 16px;
      }

      .hero-title {
        font-size: 28px;
      }
    }

/* roulang page: category3 */
:root {
  --bg-deep: #080D1A;
  --bg-panel: rgba(15, 23, 42, 0.72);
  --bg-elevated: #0F172A;
  --primary: #2E6BFF;
  --primary-hover: #58A6FF;
  --accent: #D9B36C;
  --border-glass: rgba(255,255,255,0.08);
  --text-primary: #E7EDF5;
  --text-secondary: #93A1B5;
  --text-muted: #5B6B82;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-tag: 999px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.35);
  --shadow-hover: 0 16px 40px rgba(0,0,0,0.5);
  --font-cn: 'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  --font-mono: 'JetBrains Mono',Consolas,monospace;
  --sidebar-w: 264px;
  --transition: all 0.3s ease;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  background:var(--bg-deep);
  color:var(--text-primary);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
button,input{font-family:inherit;border:none;outline:none;}

/* ===== Layout ===== */
.sidebar{
  position:fixed;left:0;top:0;width:var(--sidebar-w);height:100vh;
  background:#060A13;z-index:200;
  display:flex;flex-direction:column;padding:0 20px 28px;
  border-right:1px solid rgba(255,255,255,0.06);
}
.sidebar::after{
  content:'';position:absolute;right:-1px;top:0;width:1px;height:100%;
  background:linear-gradient(to bottom,transparent,rgba(255,255,255,0.14),transparent);
}
.main-wrap{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.main-content{flex:1;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ===== Sidebar Brand ===== */
.brand{display:flex;align-items:center;gap:12px;padding:28px 8px 24px;border-bottom:1px solid var(--border-glass);margin-bottom:18px;}
.brand-mark{
  width:42px;height:42px;background:linear-gradient(135deg,var(--primary),#1A4DD8);
  border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;color:#fff;
  box-shadow:0 4px 16px rgba(46,107,255,0.35);flex-shrink:0;
}
.brand-info{display:flex;flex-direction:column;line-height:1.3;}
.brand-name{font-size:20px;font-weight:800;letter-spacing:0.5px;color:var(--text-primary);}
.brand-domain{font-size:11px;color:var(--text-muted);font-family:var(--font-mono);margin-top:2px;}

/* ===== Sidebar Nav ===== */
.nav-menu{display:flex;flex-direction:column;gap:4px;flex:1;}
.nav-item{
  display:flex;align-items:center;gap:12px;padding:12px 14px;
  border-radius:10px;font-size:15px;color:var(--text-secondary);
  transition:var(--transition);position:relative;font-weight:400;
}
.nav-item i{width:20px;text-align:center;font-size:15px;opacity:0.85;}
.nav-item:hover{
  color:var(--text-primary);transform:translateX(2px);
  background:rgba(255,255,255,0.04);
}
.nav-item.active{
  color:#F0F4FA;background:rgba(46,107,255,0.13);font-weight:500;
}
.nav-item.active::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:22px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 10px rgba(46,107,255,0.8);
}

/* ===== Sidebar Bottom ===== */
.sidebar-bottom{display:flex;flex-direction:column;gap:12px;padding-top:16px;border-top:1px solid var(--border-glass);}
.login-btn{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 16px;border-radius:var(--radius-btn);
  border:1px solid rgba(88,166,255,0.3);background:rgba(46,107,255,0.08);
  color:var(--text-primary);font-size:14px;font-weight:500;transition:var(--transition);
}
.login-btn:hover{
  border-color:rgba(88,166,255,0.65);background:rgba(46,107,255,0.15);
  box-shadow:0 0 16px rgba(46,107,255,0.25);
}
.status-card{
  padding:12px 14px;border-radius:var(--radius-card);
  background:var(--bg-panel);border:1px solid var(--border-glass);
  font-size:12px;color:var(--text-secondary);line-height:1.6;
}

/* ===== Mobile Header ===== */
.mobile-header{display:none;}
.mobile-overlay{display:none;}
.mobile-drawer{display:none;}

/* ===== Hero ===== */
.hero{
  position:relative;padding:80px 0 56px;
  background:
    linear-gradient(135deg,rgba(8,13,26,0.92) 0%,rgba(8,13,26,0.96) 60%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom:1px solid var(--border-glass);
  overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:-100px;right:-60px;
  width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(46,107,255,0.18),transparent 70%);
  pointer-events:none;
}
.hero-badge{
  display:inline-block;padding:5px 16px;border-radius:var(--radius-tag);
  border:1px solid rgba(217,179,108,0.4);background:rgba(217,179,108,0.08);
  color:var(--accent);font-size:13px;letter-spacing:1px;margin-bottom:18px;
  position:relative;z-index:1;
}
.hero-title{
  font-size:clamp(32px,4.2vw,52px);font-weight:800;line-height:1.25;
  max-width:800px;position:relative;z-index:1;
}
.hero-title em{font-style:normal;color:var(--primary-hover);}
.hero-sub{
  font-size:18px;color:var(--text-secondary);max-width:660px;margin-top:18px;
  line-height:1.75;position:relative;z-index:1;text-align:justify;
}
.hero-cta{display:flex;gap:16px;margin-top:30px;position:relative;z-index:1;flex-wrap:wrap;}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 30px;border-radius:var(--radius-btn);font-size:15px;
  font-weight:600;cursor:pointer;transition:var(--transition);text-align:center;
}
.btn-primary{
  background:linear-gradient(135deg,#1A4DD8,var(--primary));
  color:#fff;box-shadow:0 4px 18px rgba(46,107,255,0.35);
}
.btn-primary:hover{
  background:linear-gradient(135deg,var(--primary),var(--primary-hover));
  box-shadow:0 0 28px rgba(46,107,255,0.5);transform:translateY(-2px);
}
.btn-primary:focus-visible{outline:2px solid var(--primary-hover);outline-offset:2px;}
.btn-ghost{
  background:rgba(255,255,255,0.04);border:1px solid var(--border-glass);
  color:var(--text-primary);backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  border-color:var(--primary);background:rgba(46,107,255,0.08);transform:translateY(-2px);
}
.btn-ghost:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

/* ===== Intro ===== */
.intro{padding:56px 0 16px;}
.intro-card{
  background:var(--bg-panel);backdrop-filter:blur(16px);
  border:1px solid var(--border-glass);border-radius:var(--radius-card);
  padding:36px 40px;position:relative;overflow:hidden;
  font-size:16px;line-height:1.85;color:var(--text-secondary);text-align:justify;
}
.intro-card::after{
  content:'';position:absolute;top:0;left:0;width:100%;height:100%;
  background:linear-gradient(45deg,rgba(255,255,255,0.025) 0%,transparent 45%);
  pointer-events:none;
}
.intro-card strong{color:var(--text-primary);font-weight:600;}

/* ===== Section Head ===== */
.section-head{margin-bottom:36px;}
.section-head h2{font-size:28px;font-weight:700;line-height:1.3;}
.section-head p{color:var(--text-secondary);font-size:16px;margin-top:8px;max-width:640px;}
.section{padding:56px 0;}

/* ===== Experience Cards ===== */
.exp-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px;}
.exp-card{
  background:var(--bg-panel);border:1px solid var(--border-glass);
  border-radius:var(--radius-card);padding:32px 28px;backdrop-filter:blur(12px);
  transition:var(--transition);position:relative;overflow:hidden;
  height:100%;box-shadow:var(--shadow-card);
}
.exp-card::after{
  content:'';position:absolute;top:0;left:0;width:100%;height:100%;
  background:linear-gradient(45deg,rgba(255,255,255,0.025) 0%,transparent 42%);
  pointer-events:none;border-radius:inherit;
}
.exp-card:hover{
  box-shadow:var(--shadow-hover);border-color:rgba(46,107,255,0.35);
  transform:translateY(-6px);
}
.exp-card.featured{
  border-color:rgba(46,107,255,0.4);
  box-shadow:0 0 0 1px rgba(46,107,255,0.18),var(--shadow-card);
  background:linear-gradient(180deg,rgba(46,107,255,0.08),var(--bg-panel));
}
.exp-icon{
  width:52px;height:52px;border-radius:14px;background:rgba(46,107,255,0.12);
  display:flex;align-items:center;justify-content:center;font-size:22px;
  color:var(--primary-hover);margin-bottom:20px;border:1px solid rgba(46,107,255,0.2);
}
.exp-card h3{font-size:18px;font-weight:700;margin-bottom:12px;color:var(--text-primary);}
.exp-card p{color:var(--text-secondary);font-size:14px;line-height:1.75;text-align:justify;}

/* ===== Media Block ===== */
.media-block{
  display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;
  padding:56px 0;
}
.media-text h2{font-size:28px;font-weight:700;margin-bottom:18px;}
.media-text p{color:var(--text-secondary);line-height:1.85;margin-bottom:16px;text-align:justify;}
.media-image{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border-glass);
  box-shadow:var(--shadow-card);position:relative;
}
.media-image img{width:100%;height:300px;object-fit:cover;transition:transform 0.5s ease;}
.media-image:hover img{transform:scale(1.03);}
.media-image figcaption{
  position:absolute;bottom:0;left:0;right:0;padding:32px 20px 14px;
  background:linear-gradient(transparent,rgba(6,10,19,0.92));
  font-size:13px;color:var(--text-secondary);
}

/* ===== Steps ===== */
.steps{padding:48px 0;}
.steps-list{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  background:var(--bg-panel);border:1px solid var(--border-glass);
  border-radius:var(--radius-card);padding:28px 24px;position:relative;
  transition:var(--transition);
}
.step:hover{
  border-color:rgba(46,107,255,0.35);transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.step-num{
  font-family:var(--font-mono);font-size:32px;font-weight:700;
  color:rgba(46,107,255,0.4);line-height:1;margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-secondary);line-height:1.7;text-align:justify;}

/* ===== FAQ ===== */
.faq{padding:56px 0;}
.faq-list{max-width:760px;margin:0 auto;border-top:1px solid var(--border-glass);}
.faq-item{
  border-bottom:1px solid var(--border-glass);overflow:hidden;
  transition:var(--transition);border-radius:0;
}
.faq-item:hover{background:rgba(255,255,255,0.02);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;
  color:var(--text-primary);user-select:none;
}
.faq-q .faq-icon{
  width:24px;height:24px;display:flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--text-muted);transition:transform 0.3s ease;flex-shrink:0;
}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--primary-hover);}
.faq-a{
  padding:0 24px;max-height:0;overflow:hidden;
  transition:max-height 0.35s ease,padding 0.35s ease;
  color:var(--text-secondary);font-size:15px;line-height:1.75;text-align:justify;
}
.faq-item.open .faq-a{padding:0 24px 20px;max-height:300px;}

/* ===== CTA ===== */
.cta{padding:48px 0 64px;}
.cta-inner{
  max-width:900px;margin:0 auto;
  background:linear-gradient(135deg,rgba(46,107,255,0.14) 0%,rgba(217,179,108,0.08) 100%);
  border:1px solid rgba(46,107,255,0.25);border-radius:20px;
  padding:48px 40px;text-align:center;position:relative;overflow:hidden;
}
.cta-inner::before{
  content:'';position:absolute;top:-60px;right:-40px;width:220px;height:220px;
  border-radius:50%;background:radial-gradient(circle,rgba(46,107,255,0.2),transparent);
  pointer-events:none;
}
.cta-inner h2{font-size:28px;font-weight:800;margin-bottom:12px;}
.cta-inner p{color:var(--text-secondary);font-size:16px;margin-bottom:28px;}
.cta-form{display:flex;gap:12px;max-width:480px;margin:0 auto;z-index:1;position:relative;}
.cta-form input{
  flex:1;padding:12px 16px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);
  color:var(--text-primary);font-size:14px;transition:var(--transition);
}
.cta-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,107,255,0.15);}
.cta-form input::placeholder{color:var(--text-muted);}

/* ===== Related ===== */
.related{padding:48px 0 64px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  border-radius:var(--radius-card);overflow:hidden;background:var(--bg-panel);
  border:1px solid var(--border-glass);transition:var(--transition);
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;
}
.related-card:hover{
  transform:translateY(-6px);box-shadow:var(--shadow-hover);
  border-color:rgba(46,107,255,0.3);
}
.related-card img{width:100%;height:160px;object-fit:cover;}
.related-body{padding:20px 22px;display:flex;flex-direction:column;flex:1;}
.related-body h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.related-body p{font-size:14px;color:var(--text-secondary);line-height:1.6;flex:1;}
.related-link{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;
  color:var(--primary-hover);margin-top:12px;transition:all 0.3s ease;
}
.related-link:hover{gap:10px;color:var(--text-primary);}

/* ===== Footer ===== */
.footer{
  background:#060A13;border-top:1px solid rgba(255,255,255,0.08);
  padding:56px 0 0;position:relative;z-index:10;
}
.footer .container{padding-bottom:32px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;padding-bottom:36px;
}
.footer-brand{max-width:320px;}
.brand-row{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.brand-mark-sm{
  width:36px;height:36px;background:linear-gradient(135deg,var(--primary),#1A4DD8);
  border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:800;color:#fff;flex-shrink:0;
  box-shadow:0 2px 12px rgba(46,107,255,0.3);
}
.brand-name-ft{font-size:19px;font-weight:800;color:var(--text-primary);}
.footer-desc{font-size:14px;color:var(--text-muted);line-height:1.75;text-align:justify;}
.footer-title{
  font-size:15px;font-weight:700;color:var(--text-primary);
  margin-bottom:16px;letter-spacing:0.5px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  display:flex;align-items:center;gap:8px;font-size:14px;
  color:var(--text-secondary);transition:var(--transition);
}
.footer-links a i{font-size:10px;color:var(--primary-hover);}
.footer-links a:hover{color:#fff;transform:translateX(4px);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-secondary);}
.footer-contact i{width:20px;color:var(--primary-hover);font-size:14px;}
.footer-bottom{
  border-top:1px solid var(--border-glass);padding:20px 0;
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-muted);
}
.footer-bottom .mono{font-family:var(--font-mono);font-size:12px;}

/* ===== Divider ===== */
.divider{
  height:1px;background:linear-gradient(to right,transparent,rgba(255,255,255,0.14),transparent);
  border:none;margin:0;
}

/* ===== Responsive ===== */
@media (max-width: 992px){
  .sidebar{display:none;}
  .mobile-header{
    display:flex;position:fixed;top:0;left:0;right:0;height:56px;
    align-items:center;justify-content:space-between;padding:0 16px;
    background:rgba(6,10,19,0.88);backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(255,255,255,0.06);z-index:500;
  }
  .mobile-brand{font-size:18px;font-weight:800;color:var(--text-primary);}
  .hamburger{
    background:none;border:none;color:var(--text-primary);font-size:20px;
    cursor:pointer;width:40px;height:40px;display:flex;align-items:center;
    justify-content:center;border-radius:8px;transition:var(--transition);
  }
  .hamburger:hover{background:rgba(255,255,255,0.06);}
  .mobile-login{
    padding:6px 14px;border-radius:var(--radius-btn);
    border:1px solid rgba(88,166,255,0.3);background:rgba(46,107,255,0.08);
    color:var(--text-primary);font-size:13px;font-weight:500;transition:var(--transition);
  }
  .mobile-login:hover{background:rgba(46,107,255,0.18);}
  .main-wrap{margin-left:0;padding-top:56px;}
  .container{padding:0 20px;}
  .mobile-overlay{
    position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:600;
    opacity:0;visibility:hidden;transition:opacity 0.3s ease,visibility 0.3s ease;
  }
  .mobile-overlay.open{opacity:1;visibility:visible;display:block;}
  .mobile-drawer{
    position:fixed;top:0;left:-300px;width:280px;height:100vh;
    background:#060A13;z-index:700;padding:24px 20px;
    display:flex;flex-direction:column;gap:2px;
    transition:left 0.3s ease;border-right:1px solid var(--border-glass);
  }
  .mobile-drawer.open{left:0;display:flex;}
  .mobile-drawer .brand{padding-top:12px;}
  .mobile-drawer .nav-item{padding:13px 14px;border-radius:10px;}
  .mobile-drawer .sidebar-bottom{border-top:1px solid var(--border-glass);margin-top:auto;padding-top:14px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1/-1;}
}
@media (max-width: 768px){
  .hero{padding:56px 0 36px;}
  .hero-title{font-size:30px;}
  .hero-sub{font-size:16px;}
  .exp-grid{grid-template-columns:1fr;}
  .media-block{grid-template-columns:1fr;gap:24px;}
  .steps-list{grid-template-columns:1fr 1fr;gap:16px;}
  .related-grid{grid-template-columns:1fr;}
  .section{padding:40px 0;}
  .intro{padding:40px 0 8px;}
  .intro-card{padding:28px 22px;}
  .cta-inner{padding:36px 24px;}
  .cta-form{flex-direction:column;max-width:100%;}
  .footer-bottom{flex-direction:column;text-align:center;}
}
@media (max-width: 520px){
  .container{padding:0 16px;}
  .hero-cta .btn{width:100%;}
  .steps-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .cta-inner{padding:28px 18px;}
  .cta-inner h2{font-size:22px;}
  .section-head h2{font-size:24px;}
  .hero-title{font-size:28px;}
  .media-image img{height:220px;}
}