/* roulang page: index */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1020;
  --bg-2:#101A31;
  --primary:#3D6BFF;
  --primary-soft:#5B83FF;
  --primary-glow:rgba(61,107,255,.55);
  --accent:#FFB020;
  --accent-2:#35E0C8;
  --text-1:#EDF2FF;
  --text-2:#A8B6D1;
  --text-3:#6C7A96;
  --glass:rgba(18,28,48,.55);
  --glass-strong:rgba(18,28,48,.82);
  --glass-border:rgba(120,170,255,.14);
  --glass-border-hover:rgba(61,107,255,.42);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-hero:24px;
  --radius-pill:999px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-btn:0 0 0 1px rgba(61,107,255,.5), 0 10px 30px -10px var(--primary-glow);
  --danger:#FF6B6B;
  --success:#35E0C8;
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--text-2);
  --bs-primary:var(--primary);
  --bs-primary-rgb:61,107,255;
  --bs-link-color:var(--primary);
  --bs-link-hover-color:var(--primary-soft);
  --bs-border-radius:12px;
  --bs-border-color:var(--glass-border);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease;}
h1,h2,h3,h4{color:var(--text-1);margin:0;font-weight:600;line-height:1.3;}
h1{font-size:40px;font-weight:700;}
h2{font-size:30px;}
h3{font-size:20px;}
p{margin:0;}
button{font-family:inherit;}
.num{font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;}
::selection{background:rgba(61,107,255,.35);color:#fff;}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:8px;
}
.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section-head{margin-bottom:44px;max-width:760px;}
.section-title{font-size:30px;margin-bottom:14px;letter-spacing:-.2px;}
.section-title .mark{color:var(--primary);}
.section-sub{color:var(--text-2);font-size:16px;line-height:1.85;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;font-weight:500;text-transform:uppercase;
  color:var(--primary-soft);
  padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--glass-border);background:rgba(61,107,255,.08);
}
.eyebrow i{font-size:11px;}
.divider-line{
  height:1px;width:100%;
  background:linear-gradient(90deg,rgba(61,107,255,.45),rgba(255,176,32,.18),transparent);
  border:0;margin:0;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  background:rgba(5,8,15,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--glass-border);
}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  height:76px;
}
.logo-lock{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(61,107,255,.95),rgba(61,107,255,.55));
  box-shadow:0 8px 22px -10px var(--primary-glow), 0 0 0 1px rgba(255,255,255,.08) inset;
  color:#fff;font-size:15px;font-weight:700;
}
.logo-text{display:flex;align-items:center;gap:9px;}
.logo-main{font-size:19px;font-weight:700;color:var(--text-1);letter-spacing:-.2px;line-height:1;}
.logo-divider{width:1px;height:16px;background:var(--glass-border);}
.logo-sub{font-size:11.5px;font-weight:500;color:var(--text-2);line-height:1;letter-spacing:.02em;}
.nav-menu{
  display:flex;align-items:center;gap:4px;
  margin-left:8px;flex:1;
}
.nav-link-item{
  position:relative;
  font-size:14.5px;color:var(--text-2);
  padding:8px 12px;border-radius:10px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link-item:hover{color:var(--text-1);background:rgba(120,170,255,.07);}
.nav-link-item.active{color:var(--text-1);font-weight:600;}
.nav-link-item.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;
  box-shadow:0 0 12px 1px var(--primary-glow);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.cmd-search{
  position:relative;
  display:flex;align-items:center;gap:9px;
  width:280px;height:42px;padding:0 10px 0 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--glass-border);
  background:rgba(18,28,48,.6);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.cmd-search:focus-within{
  border-color:var(--primary);
  background:rgba(18,28,48,.85);
  box-shadow:0 0 0 3px rgba(61,107,255,.16), 0 0 22px -6px var(--primary-glow);
}
.cmd-search > i{color:var(--text-3);font-size:13px;}
.cmd-search input{
  flex:1;min-width:0;
  background:transparent;border:0;outline:none;
  color:var(--text-1);font-size:13.5px;
}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-hint{
  font-size:11px;color:var(--text-3);
  border:1px solid var(--glass-border);
  border-radius:6px;padding:1px 6px;
  background:rgba(255,255,255,.03);
  font-family:"Inter",system-ui,sans-serif;
}
.suggest-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:rgba(10,16,32,.96);
  backdrop-filter:blur(16px);
  border:1px solid var(--glass-border);
  border-radius:14px;
  padding:8px;
  box-shadow:0 24px 50px -24px rgba(0,0,0,.9);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  z-index:20;
}
.suggest-panel.show{opacity:1;visibility:visible;transform:translateY(0);}
.suggest-item{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;
  font-size:13.5px;color:var(--text-2);
}
.suggest-item:hover{background:rgba(61,107,255,.12);color:var(--text-1);}
.suggest-item i{color:var(--primary-soft);font-size:12px;width:14px;text-align:center;}
.suggest-item span.tag{margin-left:auto;font-size:11px;color:var(--text-3);}
.icon-btn{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  border:1px solid var(--glass-border);
  background:rgba(18,28,48,.6);
  color:var(--text-2);font-size:14px;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.icon-btn:hover{border-color:var(--glass-border-hover);color:var(--text-1);transform:translateY(-1px);}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;color:#fff;white-space:nowrap;
  background:linear-gradient(180deg,#5B83FF,#3D6BFF);
  box-shadow:var(--shadow-btn);
  border:1px solid rgba(255,255,255,.14);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
  cursor:pointer;
}
.btn-glow:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(61,107,255,.6),0 16px 38px -12px var(--primary-glow);color:#fff;}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(61,107,255,.45),0 6px 16px -8px var(--primary-glow);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;color:var(--text-1);
  background:rgba(18,28,48,.5);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(10px);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.btn-ghost:hover{border-color:var(--glass-border-hover);background:rgba(61,107,255,.1);transform:translateY(-1px);color:var(--text-1);}
.btn-text{
  display:inline-flex;align-items:center;gap:7px;
  color:var(--primary-soft);font-size:14.5px;font-weight:500;
}
.btn-text i{transition:transform .2s ease;}
.btn-text:hover{color:var(--primary);}
.btn-text:hover i{transform:translateX(3px);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--glass-border);background:rgba(18,28,48,.6);
  color:var(--text-1);font-size:16px;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:78vh;
  display:flex;align-items:center;
  padding:140px 0 72px;
  overflow:hidden;
  border-bottom:1px solid rgba(120,170,255,.08);
}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;border-radius:0;opacity:.5;}
.hero-mask{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(5,8,15,.86) 0%,rgba(5,8,15,.78) 45%,var(--bg-0) 100%);
}
.hero-glow{
  position:absolute;z-index:1;
  width:760px;height:760px;left:-140px;top:-220px;
  background:radial-gradient(circle,rgba(61,107,255,.34) 0%,rgba(61,107,255,.08) 42%,transparent 70%);
  pointer-events:none;
}
.hero-grid-lines{
  position:absolute;inset:0;z-index:1;opacity:.5;
  background-image:linear-gradient(rgba(120,170,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,170,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 78%);
}
.hero .container-x{position:relative;z-index:2;}
.hero-copy{max-width:600px;}
.hero h1{
  font-size:44px;line-height:1.24;letter-spacing:-.5px;margin:20px 0 18px;
}
.hero h1 .hl{
  color:var(--primary-soft);
  position:relative;
}
.hero-sub{
  font-size:17px;color:var(--text-2);line-height:1.85;margin-bottom:30px;
  max-width:540px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-visual{position:relative;}
.kv-frame{
  position:relative;border-radius:var(--radius-hero);
  overflow:hidden;border:1px solid var(--glass-border);
  box-shadow:0 40px 80px -40px rgba(0,0,0,.95);
}
.kv-frame img{width:100%;height:340px;object-fit:cover;border-radius:0;}
.kv-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.15),rgba(5,8,15,.72));
}
.metric-card{
  position:absolute;
  min-width:158px;
  padding:14px 16px;
  border-radius:14px;
  background:rgba(16,26,49,.82);
  backdrop-filter:blur(14px);
  border:1px solid var(--glass-border);
  box-shadow:0 20px 40px -22px rgba(0,0,0,.95);
}
.metric-card .label{
  font-size:11.5px;color:var(--text-3);letter-spacing:.06em;text-transform:uppercase;
  display:flex;align-items:center;gap:6px;margin-bottom:6px;
}
.metric-card .value{font-size:22px;font-weight:700;color:var(--text-1);line-height:1.1;}
.metric-card .value.amber{color:var(--accent);}
.metric-card .desc{font-size:12px;color:var(--text-3);margin-top:4px;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 10px var(--accent-2);display:inline-block;}
.metric-a{top:-22px;right:-14px;}
.metric-b{bottom:-24px;left:-18px;}
.trust-row{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;margin-top:48px;
}
.trust-badge{
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:14px;
  background:rgba(18,28,48,.5);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(10px);
  font-size:12.5px;color:var(--text-2);
}
.trust-badge i{color:var(--primary-soft);font-size:14px;}

/* ---------- 步骤 ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:26px;position:relative;margin-top:8px;
}
.step-item{position:relative;padding-top:26px;}
.step-item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(61,107,255,.55),rgba(120,170,255,.06));
}
.step-num{
  font-family:"Inter",system-ui,sans-serif;
  font-size:40px;font-weight:700;line-height:1;
  color:transparent;
  -webkit-text-stroke:1.4px rgba(120,170,255,.45);
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:18px;margin-bottom:10px;}
.step-item p{font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* ---------- 内容预览卡 ---------- */
.preview-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;}
.p-card{
  position:relative;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease;
}
.p-card:hover{transform:translateY(-2px);border-color:var(--glass-border-hover);}
.p-card.large{grid-column:span 3;}
.p-card.small{grid-column:span 2;padding:26px 24px;}
.p-card.large .p-cover img{width:100%;height:200px;object-fit:cover;border-radius:0;}
.p-card.large .p-body{padding:22px 24px 26px;}
.p-card h3{font-size:19px;margin-bottom:10px;}
.p-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;
  padding:4px 11px;border-radius:var(--radius-pill);
  background:rgba(61,107,255,.1);
  border:1px solid rgba(61,107,255,.36);
  color:var(--primary-soft);
}
.badge-pill.amber{
  background:rgba(255,176,32,.1);
  border-color:rgba(255,176,32,.4);
  color:var(--accent);
}
.p-badge{position:absolute;top:16px;right:16px;z-index:2;}
.small-icon{
  width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(61,107,255,.12);
  border:1px solid rgba(61,107,255,.28);
  color:var(--primary-soft);
  font-size:16px;margin-bottom:16px;
}

/* ---------- 数据进度条 ---------- */
.progress-band{
  border-radius:var(--radius-hero);
  background:var(--glass);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  padding:42px 44px;
}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;margin-bottom:34px;
}
.stat-item .stat-label{font-size:13px;color:var(--text-3);margin-bottom:8px;}
.stat-item .stat-num{
  font-family:"Inter",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:36px;font-weight:700;color:var(--text-1);line-height:1.05;
}
.stat-item .stat-num.amber{color:var(--accent);}
.stat-item .stat-unit{font-size:14px;color:var(--text-3);margin-left:4px;font-weight:500;}
.bar-head{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--text-3);margin-bottom:12px;}
.bar-head strong{color:var(--text-1);font-weight:600;}
.bar-track{
  height:8px;border-radius:8px;
  background:rgba(255,255,255,.08);
  overflow:hidden;
}
.bar-fill{
  height:100%;width:0;border-radius:8px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  box-shadow:0 0 18px 0 rgba(255,176,32,.35);
  transition:width .8s cubic-bezier(.22,.8,.25,1);
}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-2px);border-color:var(--glass-border-hover);}
.news-cover{position:relative;}
.news-cover img{width:100%;height:180px;object-fit:cover;border-radius:0;}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;}
.news-body h3 a:hover{color:var(--primary-soft);}
.news-sum{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:18px;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;gap:12px;
  padding-top:14px;border-top:1px solid rgba(120,170,255,.1);
  font-size:12.5px;color:var(--text-3);
}
.empty-state{
  grid-column:1/-1;
  text-align:center;
  padding:64px 24px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-border);
}
.empty-state i{font-size:44px;color:var(--primary-soft);opacity:.7;}
.empty-state h3{font-size:16px;margin:18px 0 8px;}
.empty-state p{font-size:13px;color:var(--text-2);margin-bottom:20px;}

/* ---------- 用户反馈 ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.voice-card{
  padding:26px 24px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--glass-border);
  backdrop-filter:blur(14px);box-shadow:var(--shadow-card);
}
.voice-card .quote{
  font-size:15px;color:var(--text-2);line-height:1.85;margin-bottom:20px;
  position:relative;padding-left:16px;
}
.voice-card .quote::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:2px;background:var(--primary);box-shadow:0 0 12px var(--primary-glow);
}
.voice-user{display:flex;align-items:center;gap:12px;}
.voice-avatar{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(61,107,255,.14);
  border:1px solid rgba(61,107,255,.3);
  color:var(--primary-soft);font-weight:600;font-size:15px;
}
.voice-user .name{font-size:14px;color:var(--text-1);font-weight:600;}
.voice-user .role{font-size:12.5px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.accordion-item{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:14px !important;
  margin-bottom:12px;
  overflow:hidden;
  backdrop-filter:blur(12px);
}
.accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:16px;font-weight:600;
  padding:20px 22px;
  box-shadow:none;
  border:0;
  gap:16px;
}
.accordion-button:not(.collapsed){
  background:rgba(61,107,255,.08);
  color:var(--text-1);
  box-shadow:inset 3px 0 0 var(--primary);
}
.accordion-button:focus{box-shadow:none;outline:none;border-color:transparent;}
.accordion-button::after{display:none;}
.faq-icon{
  flex-shrink:0;margin-left:auto;
  width:28px;height:28px;border-radius:9px;
  display:grid;place-items:center;
  border:1px solid var(--glass-border);
  background:rgba(255,255,255,.03);
  color:var(--text-2);font-size:12px;
  transition:transform .3s ease,color .3s ease,border-color .3s ease;
}
.accordion-button:not(.collapsed) .faq-icon{
  transform:rotate(45deg);
  color:var(--primary-soft);
  border-color:rgba(61,107,255,.45);
}
.accordion-body{
  padding:4px 22px 22px 22px;
  font-size:15px;color:var(--text-2);line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-band{
  border-radius:var(--radius-hero);
  padding:38px 44px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:space-between;gap:26px;
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{font-size:14.5px;color:var(--text-2);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--bg-1);
  border-top:1px solid var(--glass-border);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
}
.footer-brand .logo-lock{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:320px;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:18px;font-weight:600;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary-soft);}
.footer-sub{
  display:flex;gap:10px;margin-top:16px;
}
.footer-sub input{
  flex:1;min-width:0;height:42px;padding:0 14px;
  border-radius:var(--radius-btn);
  background:rgba(18,28,48,.7);
  border:1px solid var(--glass-border);
  color:var(--text-1);font-size:13.5px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-sub input::placeholder{color:var(--text-3);}
.footer-sub input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(61,107,255,.16);}
.footer-sub button{
  height:42px;padding:0 20px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(180deg,#5B83FF,#3D6BFF);
  color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  box-shadow:0 8px 22px -12px var(--primary-glow);
  transition:filter .2s ease,transform .2s ease;
}
.footer-sub button:hover{filter:brightness(1.07);transform:translateY(-1px);}
.footer-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(120,170,255,.1);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--text-2);}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{
  position:fixed;left:0;right:0;bottom:0;z-index:1060;
  background:rgba(10,16,32,.96);
  backdrop-filter:blur(18px);
  border-top:1px solid var(--glass-border);
  border-radius:22px 22px 0 0;
  padding:20px 20px 28px;
  transform:translateY(102%);
  transition:transform .32s cubic-bezier(.22,.8,.25,1);
  max-height:86vh;overflow-y:auto;
}
.mobile-drawer.open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px;}
.drawer-nav a{
  padding:13px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;
}
.drawer-nav a.active{
  color:var(--text-1);font-weight:600;
  background:rgba(61,107,255,.12);
  border-color:rgba(61,107,255,.3);
}
.drawer-mask{
  position:fixed;inset:0;z-index:1050;
  background:rgba(5,8,15,.7);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .cmd-search{width:220px;}
  .nav-menu{gap:0;}
  .nav-link-item{padding:8px 10px;font-size:14px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .nav-menu{display:none;}
  .cmd-search{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-actions .btn-glow{display:none;}
  .hero{padding:120px 0 56px;min-height:auto;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:16px;}
  .hero-copy{max-width:100%;margin-bottom:44px;}
  .kv-frame img{height:280px;}
  .metric-a{top:-16px;right:8px;}
  .metric-b{bottom:-18px;left:8px;}
  .trust-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 22px;}
  .preview-grid{grid-template-columns:repeat(2,1fr);}
  .p-card.large{grid-column:span 2;}
  .p-card.small{grid-column:span 1;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .voice-grid{grid-template-columns:1fr;}
  .progress-band{padding:32px 26px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px;}
  .cta-band .btn-glow{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:575px){
  .container-x{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{padding:104px 0 48px;}
  .hero h1{font-size:26px;line-height:1.32;}
  .hero-sub{font-size:15px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%;}
  .section-title{font-size:22px;}
  .section-sub{font-size:14.5px;}
  .trust-row{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .preview-grid{grid-template-columns:1fr;}
  .p-card.large,.p-card.small{grid-column:span 1;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:20px;}
  .stat-item .stat-num{font-size:28px;}
  .news-grid{grid-template-columns:1fr;}
  .progress-band{padding:26px 20px;border-radius:18px;}
  .cta-band{border-radius:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .logo-sub{display:none;}
  .logo-divider{display:none;}
  .metric-card{min-width:134px;padding:11px 13px;}
  .metric-card .value{font-size:18px;}
  .kv-frame img{height:220px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1020;
  --bg-2:#101A31;
  --primary:#3D6BFF;
  --primary-lite:#5C85FF;
  --primary-glow:rgba(61,107,255,.55);
  --accent:#FFB020;
  --accent-2:#35E0C8;
  --success:#2FD48A;
  --warning:#FFB020;
  --danger:#FF5C6C;
  --glass:rgba(18,28,48,.55);
  --glass-soft:rgba(18,28,48,.38);
  --line:rgba(120,170,255,.14);
  --line-strong:rgba(120,170,255,.28);
  --text-1:#EDF2FF;
  --text-2:#A8B6D1;
  --text-3:#6C7A96;
  --r-card:16px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:12px;
  --r-hero:24px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04), 0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-lift:0 1px 0 rgba(255,255,255,.07), 0 26px 54px -26px rgba(0,0,0,.9);
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--text-2);
  --bs-border-color:var(--line);
  --bs-border-radius:var(--r-card);
  --bs-border-radius-sm:var(--r-btn);
  --bs-primary:var(--primary);
  --bs-primary-rgb:61,107,255;
  --bs-link-color:var(--primary-lite);
  --bs-link-hover-color:var(--text-1);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease;}
button,input{font-family:inherit;font-size:inherit;outline:none;}
h1,h2,h3,h4{color:var(--text-1);line-height:1.3;margin:0;font-weight:700;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(61,107,255,.4);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-1);}
::-webkit-scrollbar-thumb{background:rgba(120,170,255,.22);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(120,170,255,.4);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;font-family:"Inter",system-ui,sans-serif;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:16px 0;
  transition:background .3s ease,padding .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(10,16,32,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  padding:10px 0;
}
.nav-inner{display:flex;align-items:center;gap:28px;}
.logo-lock{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--primary),#7BA0FF);
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 1px rgba(61,107,255,.45),0 10px 24px -12px var(--primary-glow);
}
.logo-text{display:flex;align-items:center;gap:9px;}
.logo-main{color:var(--text-1);font-weight:700;font-size:17px;letter-spacing:.01em;}
.logo-divider{width:1px;height:14px;background:rgba(120,170,255,.35);}
.logo-sub{color:var(--text-2);font-size:11.5px;font-weight:500;letter-spacing:.02em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link-item{
  position:relative;font-size:14.5px;color:var(--text-2);padding:6px 0;white-space:nowrap;
}
.nav-link-item::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);opacity:0;transform:scaleX(.4);transition:.25s ease;
  box-shadow:0 0 10px var(--primary-glow);
}
.nav-link-item:hover{color:var(--text-1);}
.nav-link-item:hover::after,.nav-link-item.active::after{opacity:1;transform:scaleX(1);}
.nav-link-item.active{color:var(--text-1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:9px;
  width:270px;height:40px;padding:0 12px 0 14px;
  background:rgba(16,26,49,.7);border:1px solid var(--line);border-radius:999px;
  transition:.25s ease;
}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(61,107,255,.16),0 0 18px -4px var(--primary-glow);}
.cmd-search i{color:var(--text-3);font-size:13px;}
.cmd-search input{
  flex:1;min-width:0;background:none;border:0;color:var(--text-1);font-size:13.5px;
}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-hint{
  font-size:11px;color:var(--text-3);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;line-height:1.5;flex-shrink:0;
}
.suggest-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:rgba(10,16,32,.96);backdrop-filter:blur(16px);
  border:1px solid var(--line);border-radius:14px;padding:8px;
  box-shadow:var(--shadow-lift);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:.22s ease;z-index:20;
}
.cmd-search.open .suggest-panel{opacity:1;visibility:visible;transform:translateY(0);}
.suggest-item{
  display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:10px;
  font-size:13.5px;color:var(--text-2);
}
.suggest-item:hover{background:rgba(61,107,255,.14);color:var(--text-1);}
.suggest-item i{color:var(--primary-lite);font-size:13px;width:16px;text-align:center;}
.suggest-item .tag{
  margin-left:auto;font-size:11px;color:var(--accent);border:1px solid rgba(255,176,32,.35);
  border-radius:999px;padding:1px 8px;
}
.icon-btn{
  width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:var(--glass-soft);
  color:var(--text-2);font-size:14px;transition:.25s ease;
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-strong);transform:translateY(-1px);}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border:0;border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--primary),#5C85FF);
  color:#fff;font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  box-shadow:0 0 0 1px rgba(61,107,255,.5),0 10px 30px -10px var(--primary-glow);
  transition:.25s ease;
}
.btn-glow:hover{color:#fff;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(61,107,255,.7),0 16px 36px -12px var(--primary-glow);}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(61,107,255,.5),0 6px 18px -10px var(--primary-glow);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--glass-soft);border:1px solid var(--line);color:var(--text-1);
  font-size:15px;font-weight:500;cursor:pointer;backdrop-filter:blur(10px);transition:.25s ease;
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(61,107,255,.12);color:var(--text-1);transform:translateY(-1px);}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:var(--glass-soft);
  color:var(--text-1);cursor:pointer;
}

/* ===== Page head / breadcrumb ===== */
main{padding-top:96px;}
.crumb-bar{padding:22px 0 0;}
.breadcrumb-x{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb-x a{color:var(--text-3);}
.breadcrumb-x a:hover{color:var(--primary-lite);}
.breadcrumb-x i{font-size:9px;color:var(--text-3);opacity:.7;}
.breadcrumb-x .current{color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ===== Article hero ===== */
.article-hero{padding:26px 0 0;max-width:900px;margin:0 auto;}
.article-hero h1{font-size:38px;font-weight:700;letter-spacing:-.01em;line-height:1.32;}
.meta-bar{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:18px;font-size:13px;color:var(--text-3);}
.meta-bar .dot-sep{width:1px;height:12px;background:rgba(120,170,255,.25);}
.meta-bar i{font-size:12px;margin-right:5px;}
.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:500;color:var(--primary-lite);
  background:rgba(61,107,255,.12);border:1px solid rgba(61,107,255,.42);
}
.grad-line{
  height:1px;margin-top:22px;
  background:linear-gradient(90deg,rgba(61,107,255,.75),rgba(255,176,32,.45),rgba(120,170,255,0));
}
.cover-figure{margin:34px auto 0;max-width:900px;}
.cover-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);background:var(--bg-2);
}
.cover-figure figcaption{margin-top:10px;font-size:12.5px;color:var(--text-3);text-align:center;}

/* ===== Article body ===== */
.article-body{max-width:820px;margin:44px auto 0;font-size:16.5px;line-height:1.85;color:var(--text-2);}
.article-body h2{
  position:relative;font-size:26px;font-weight:700;margin:46px 0 18px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px var(--primary-glow);
}
.article-body h3{font-size:19px;font-weight:600;margin:30px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;}
.article-body p{margin:0 0 1.2em;}
.article-body strong{color:var(--text-1);font-weight:600;}
.article-body a{color:var(--primary-lite);border-bottom:1px solid rgba(92,133,255,.4);}
.article-body a:hover{color:var(--text-1);border-bottom-color:var(--primary);}
.article-body ul{margin:0 0 1.2em;padding:0;list-style:none;}
.article-body ul li{position:relative;padding-left:20px;margin:8px 0;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--primary);transform:rotate(45deg);
}
.article-body ol{margin:0 0 1.2em;padding:0;list-style:none;counter-reset:li;}
.article-body ol li{position:relative;padding-left:30px;margin:8px 0;counter-increment:li;}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:.1em;
  color:var(--primary-lite);font-weight:600;font-size:14px;font-family:"Inter",system-ui,sans-serif;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--glass);border-left:3px solid var(--primary);
  border-radius:12px;color:var(--text-1);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);border:1px solid var(--line);margin:22px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{margin-top:10px;font-size:12.5px;color:var(--text-3);text-align:center;}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:12px;
}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;}
.article-body th{color:var(--text-1);background:rgba(61,107,255,.1);font-weight:600;}
.article-body tbody tr:nth-child(odd){background:rgba(255,255,255,.022);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body pre{
  background:#060B16;border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;margin:22px 0;font-size:14px;line-height:1.7;color:#CFE0FF;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;
  background:rgba(61,107,255,.14);color:#9FBBFF;padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:0;height:1px;background:var(--line);margin:34px 0;}

/* ===== Empty state ===== */
.empty-state{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(14px);padding:56px 28px;text-align:center;box-shadow:var(--shadow-card);
}
.empty-state i{font-size:44px;color:var(--primary-lite);opacity:.8;}
.empty-state h2{margin:18px 0 8px;font-size:19px;}
.empty-state p{font-size:13.5px;color:var(--text-2);margin-bottom:22px;}

/* ===== Related / prev-next ===== */
.section{padding:88px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:26px;font-weight:700;}
.section-head p{margin:8px 0 0;font-size:14px;color:var(--text-3);}
.link-arrow{color:var(--primary-lite);font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.link-arrow i{transition:transform .22s ease;}
.link-arrow:hover{color:var(--text-1);}
.link-arrow:hover i{transform:translateX(3px);}
.related-list{border-top:1px solid var(--line);}
.related-item{
  display:flex;align-items:center;gap:18px;padding:20px 6px;border-bottom:1px solid var(--line);
  transition:.25s ease;
}
.related-item:hover{background:rgba(61,107,255,.06);padding-left:14px;}
.related-item .ri-index{
  font-size:13px;color:var(--text-3);font-weight:600;width:26px;flex-shrink:0;
}
.related-item .ri-body{flex:1;min-width:0;}
.related-item h3{font-size:16.5px;font-weight:600;margin:0 0 6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.related-item .ri-meta{font-size:12.5px;color:var(--text-3);display:flex;gap:12px;align-items:center;}
.related-item .ri-meta .mini-badge{
  color:var(--accent);border:1px solid rgba(255,176,32,.32);border-radius:999px;padding:1px 8px;font-size:11.5px;
}
.related-item > i{color:var(--text-3);font-size:13px;}

.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:34px;}
.pn-card{
  display:block;padding:20px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);transition:.25s ease;
}
.pn-card:hover{transform:translateY(-2px);border-color:rgba(61,107,255,.4);box-shadow:var(--shadow-lift);}
.pn-card .pn-label{font-size:12px;color:var(--text-3);letter-spacing:.05em;text-transform:uppercase;margin-bottom:8px;}
.pn-card h3{font-size:16px;font-weight:600;line-height:1.5;}
.back-row{margin-top:34px;text-align:center;}

/* ===== Subscribe ===== */
.subscribe-card{
  margin-top:88px;padding:38px;border-radius:var(--r-hero);
  background:linear-gradient(180deg,rgba(16,26,49,.9),rgba(10,16,32,.9));
  border:1px solid var(--line);backdrop-filter:blur(14px);box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1.05fr 1fr;gap:34px;align-items:center;
}
.subscribe-card h2{font-size:24px;margin-bottom:10px;}
.subscribe-card p{font-size:14px;color:var(--text-2);margin:0;}
.sub-form{display:flex;gap:12px;}
.sub-form input{
  flex:1;min-width:0;height:46px;padding:0 16px;border-radius:var(--r-input);
  background:rgba(5,8,15,.75);border:1px solid var(--line);color:var(--text-1);font-size:14px;
  transition:.25s ease;
}
.sub-form input::placeholder{color:var(--text-3);}
.sub-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(61,107,255,.16);}
.form-tip{margin-top:10px;font-size:12px;color:var(--text-3);}

/* ===== CTA band ===== */
.cta-band{
  margin-top:88px;padding:36px 40px;border-radius:var(--r-hero);
  background:rgba(16,26,49,.72);border:1px solid var(--line);backdrop-filter:blur(14px);
  display:flex;align-items:center;justify-content:space-between;gap:26px;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:23px;margin-bottom:8px;}
.cta-band p{margin:0;font-size:14px;color:var(--text-2);}

/* ===== Footer ===== */
.site-footer{margin-top:96px;background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand .logo-lock{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--primary-lite);}
.footer-sub{display:flex;gap:8px;margin-top:12px;}
.footer-sub input{
  flex:1;min-width:0;height:40px;padding:0 12px;border-radius:10px;font-size:13.5px;
  background:rgba(5,8,15,.7);border:1px solid var(--line);color:var(--text-1);
}
.footer-sub input::placeholder{color:var(--text-3);}
.footer-sub input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(61,107,255,.14);}
.footer-sub button{
  height:40px;padding:0 18px;border:0;border-radius:10px;cursor:pointer;
  background:linear-gradient(135deg,var(--primary),#5C85FF);color:#fff;font-size:13.5px;font-weight:600;
  box-shadow:0 0 0 1px rgba(61,107,255,.45),0 8px 22px -10px var(--primary-glow);transition:.25s ease;
}
.footer-sub button:hover{transform:translateY(-1px);}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}

/* ===== Skeleton shimmer ===== */
.shimmer{
  position:relative;overflow:hidden;background:rgba(18,28,48,.6);
}
.shimmer::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(120,170,255,.12),transparent);
  transform:translateX(-100%);animation:shimmer 1.2s infinite;
}
@keyframes shimmer{to{transform:translateX(100%);}}

/* ===== Responsive ===== */
@media (max-width:1200px){
  .nav-menu{gap:20px;}
  .cmd-search{width:220px;}
}
@media (max-width:991px){
  main{padding-top:84px;}
  .nav-menu{
    position:fixed;top:0;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:92px 24px 30px;margin:0;
    background:rgba(10,16,32,.97);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);
    transform:translateY(-110%);transition:transform .35s ease;z-index:900;
  }
  .nav-menu.open{transform:translateY(0);}
  .nav-link-item{padding:13px 4px;font-size:16px;border-bottom:1px solid rgba(120,170,255,.08);}
  .nav-link-item::after{display:none;}
  .nav-link-item.active{color:var(--primary-lite);}
  .cmd-search{display:none;}
  .icon-btn{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions{gap:10px;}
  .nav-actions .btn-glow{height:40px;padding:0 18px;font-size:14px;}
  .article-hero h1{font-size:29px;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:22px;}
  .subscribe-card{grid-template-columns:1fr;padding:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px;}
  .cta-band .btn-glow{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container-x{padding:0 18px;}
  .section{padding:64px 0 0;}
  .article-hero{padding:20px 0 0;}
  .article-hero h1{font-size:25px;}
  .article-body{margin-top:32px;font-size:15.5px;}
  .article-body h2{font-size:20px;margin-top:36px;}
  .article-body h3{font-size:17.5px;}
  .pn-grid{grid-template-columns:1fr;}
  .sub-form{flex-direction:column;}
  .sub-form .btn-glow{width:100%;}
  .related-item h3{white-space:normal;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .site-footer{margin-top:64px;padding-top:48px;}
}
@media (max-width:575px){
  .logo-sub{display:none;}
  .logo-divider{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .empty-state{padding:44px 20px;}
  .cta-band{margin-top:56px;padding:24px;}
  .subscribe-card{margin-top:56px;padding:24px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1020;
  --bg-2:#101A31;
  --primary:#3D6BFF;
  --primary-lift:#5580FF;
  --primary-glow:rgba(61,107,255,.55);
  --accent:#FFB020;
  --accent-2:#35E0C8;
  --glass:rgba(18,28,48,.55);
  --glass-soft:rgba(18,28,48,.34);
  --glass-brd:rgba(120,170,255,.14);
  --glass-brd-strong:rgba(61,107,255,.42);
  --text-1:#EDF2FF;
  --text-2:#A8B6D1;
  --text-3:#6C7A96;
  --success:#2FD48A;
  --warning:#FFB020;
  --danger:#FF6B7A;
  --r-card:16px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:12px;
  --r-hero:24px;
  --sh-card:0 1px 0 rgba(255,255,255,.04), 0 18px 40px -24px rgba(0,0,0,.8);
  --sh-hover:0 0 0 1px rgba(61,107,255,.16), 0 26px 56px -30px rgba(0,0,0,.9);
  --sec:96px;
  --bs-primary:#3D6BFF;
  --bs-body-bg:#05080F;
  --bs-body-color:#A8B6D1;
  --bs-border-radius:12px;
  --bs-link-color:#3D6BFF;
  --bs-link-hover-color:#5580FF;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
h1,h2,h3,h4{color:var(--text-1);line-height:1.3;margin:0;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:16px 0;
  transition:background-color .3s ease,backdrop-filter .3s ease,padding .3s ease,border-color .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  padding:10px 0;
  background:rgba(5,8,15,.76);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--glass-brd);
}
.nav-inner{display:flex;align-items:center;gap:22px;min-height:52px;}
.logo-lock{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  display:grid;place-items:center;
  background:rgba(61,107,255,.16);
  border:1px solid rgba(61,107,255,.42);
  color:#9BB0FF;font-family:"Inter",system-ui,sans-serif;font-weight:700;font-size:14px;letter-spacing:.02em;
}
.logo-text{display:flex;align-items:center;gap:8px;}
.logo-main{font-family:"Inter",system-ui,sans-serif;font-size:16px;font-weight:700;color:var(--text-1);letter-spacing:.01em;}
.logo-divider{width:1px;height:14px;background:rgba(120,170,255,.3);}
.logo-sub{font-size:12px;font-weight:500;color:var(--text-2);white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link-item{
  position:relative;padding:8px 12px;font-size:14.5px;color:var(--text-2);
  border-radius:10px;white-space:nowrap;
}
.nav-link-item:hover{color:var(--text-1);background:rgba(120,170,255,.07);}
.nav-link-item.active{color:#FFFFFF;}
.nav-link-item.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px 1px var(--primary-glow);
}
.nav-link-item.mobile-cta{display:none;}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:290px;height:40px;padding:0 12px;
  border-radius:999px;
  background:rgba(18,28,48,.62);
  border:1px solid var(--glass-brd);
  backdrop-filter:blur(10px);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cmd-search i{color:var(--text-3);font-size:13px;}
.cmd-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:0;
  color:var(--text-1);font-size:14px;
}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(61,107,255,.18);}
.cmd-hint{
  font-family:"Inter",system-ui,sans-serif;font-size:11px;color:var(--text-3);
  border:1px solid var(--glass-brd);border-radius:6px;padding:1px 5px;
}
.suggest-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  padding:8px;border-radius:16px;
  background:rgba(10,16,32,.96);
  border:1px solid var(--glass-brd);
  backdrop-filter:blur(18px);
  box-shadow:0 30px 64px -32px rgba(0,0,0,.95);
  display:none;
}
.cmd-search:focus-within .suggest-panel{display:block;}
.suggest-item{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;
  font-size:14px;color:var(--text-2);
}
.suggest-item:hover{background:rgba(61,107,255,.12);color:var(--text-1);}
.suggest-item i{color:var(--primary-lift);font-size:13px;width:16px;text-align:center;}
.suggest-item .tag{
  margin-left:auto;font-size:11px;color:var(--text-3);
  border:1px solid var(--glass-brd);border-radius:999px;padding:1px 8px;
}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(18,28,48,.6);border:1px solid var(--glass-brd);
  color:var(--text-2);font-size:15px;transition:all .2s ease;
}
.icon-btn:hover{color:var(--text-1);border-color:var(--glass-brd-strong);}
.search-btn{display:none;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;place-items:center;
  background:rgba(18,28,48,.6);border:1px solid var(--glass-brd);
  color:var(--text-1);font-size:16px;
}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-btn);
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 0 0 1px rgba(61,107,255,.5),0 10px 30px -10px var(--primary-glow);
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.btn-glow:hover{background:var(--primary-lift);color:#fff;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(61,107,255,.6),0 16px 38px -12px var(--primary-glow);}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(61,107,255,.5),0 6px 20px -12px var(--primary-glow);}
.nav-actions .btn-glow{height:40px;padding:0 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:rgba(18,28,48,.5);border:1px solid var(--glass-brd);
  color:var(--text-1);font-size:15px;font-weight:500;
  backdrop-filter:blur(10px);
  transition:all .2s ease;
}
.btn-ghost:hover{border-color:var(--glass-brd-strong);background:rgba(30,44,72,.6);transform:translateY(-1px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--primary-lift);
  font-size:14.5px;font-weight:500;
}
.link-arrow i{transition:transform .2s ease;font-size:12px;}
.link-arrow:hover{color:#8CA5FF;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:132px 0 68px;
  border-bottom:1px solid var(--glass-brd);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.3;
}
.page-hero-mask{
  position:absolute;inset:0;
  background:rgba(5,8,15,.74);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:48px;align-items:center;
}
.breadcrumb-lite{
  position:relative;z-index:2;
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb-lite a{color:var(--text-2);}
.breadcrumb-lite a:hover{color:var(--text-1);}
.breadcrumb-lite .sep{font-size:10px;color:var(--text-3);}
.breadcrumb-lite .current{color:var(--text-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.05em;
  color:#9BB0FF;background:rgba(61,107,255,.12);
  border:1px solid rgba(61,107,255,.34);border-radius:999px;
  padding:4px 12px;margin-bottom:18px;
}
.hero-copy h1{font-size:40px;font-weight:700;letter-spacing:-.01em;margin-bottom:18px;}
.hero-lead{font-size:17px;color:var(--text-2);max-width:600px;line-height:1.85;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-card{
  padding:26px 24px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-brd);
  backdrop-filter:blur(14px);box-shadow:var(--sh-card);
}
.hero-card h3{font-size:16px;margin-bottom:6px;}
.hero-card .card-note{font-size:12.5px;color:var(--text-3);margin-bottom:18px;}
.fact-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;border-bottom:1px solid rgba(120,170,255,.1);font-size:14px;
}
.fact-list li:last-child{border-bottom:0;padding-bottom:0;}
.fact-list span{color:var(--text-3);}
.fact-list strong{color:var(--text-1);font-weight:600;font-family:"Inter",system-ui,sans-serif;}
.fact-list strong.amber{color:var(--accent);}

/* ---------- common section ---------- */
.section{padding:var(--sec) 0;}
.section-tight{padding:72px 0 0;}
.section-head{max-width:740px;margin-bottom:48px;}
.section-head h2{font-size:30px;margin-bottom:16px;letter-spacing:-.01em;}
.section-head p{font-size:15.5px;color:var(--text-2);line-height:1.85;}
.section-head .eyebrow{margin-bottom:14px;}

/* ---------- showcase band ---------- */
.showcase-band{
  position:relative;overflow:hidden;border-radius:var(--r-hero);
  border:1px solid var(--glass-brd);
  min-height:360px;display:flex;align-items:flex-end;
  padding:40px;
}
.showcase-band img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
}
.showcase-band .band-mask{
  position:absolute;inset:0;background:rgba(5,8,15,.66);
}
.band-content{position:relative;z-index:2;max-width:640px;}
.band-content h2{font-size:28px;margin-bottom:14px;}
.band-content p{font-size:15.5px;color:var(--text-2);line-height:1.85;}
.band-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;
  padding:4px 12px;border-radius:999px;
  background:rgba(18,28,48,.6);border:1px solid var(--glass-brd);color:var(--text-2);
}
.badge-pill.primary{border-color:rgba(61,107,255,.4);color:#9BB0FF;}
.badge-pill.amber{border-color:rgba(255,176,32,.4);color:var(--accent);}
.badge-pill.cyan{border-color:rgba(53,224,200,.36);color:var(--accent-2);}

/* ---------- waterfall ---------- */
.wf-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
.wf-col{display:flex;flex-direction:column;gap:24px;}
.wf-card{
  padding:24px;border-radius:var(--r-card);
  background:var(--glass-soft);border:1px solid var(--glass-brd);
  backdrop-filter:blur(14px);box-shadow:var(--sh-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.wf-card:hover{transform:translateY(-2px);border-color:var(--glass-brd-strong);box-shadow:var(--sh-hover);}
.wf-card img{
  width:100%;height:196px;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--glass-brd);margin-bottom:18px;
}
.wf-card.tall img{height:268px;}
.wf-card .wf-num{
  font-family:"Inter",system-ui,sans-serif;font-size:12px;font-weight:600;
  letter-spacing:.08em;color:var(--text-3);display:block;margin-bottom:10px;
}
.wf-card h3{font-size:19px;margin-bottom:10px;}
.wf-card p{font-size:14.5px;color:var(--text-2);line-height:1.85;}
.wf-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:16px;padding-top:14px;border-top:1px solid rgba(120,170,255,.1);
  font-size:12.5px;color:var(--text-3);
}
.wf-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-2);}
.wf-card.mini .mini-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(61,107,255,.14);border:1px solid rgba(61,107,255,.34);
  color:#9BB0FF;font-size:15px;margin-bottom:16px;
}

/* ---------- faq ---------- */
.faq-wrap{
  border:1px solid var(--glass-brd);border-radius:var(--r-card);
  background:var(--glass-soft);backdrop-filter:blur(14px);overflow:hidden;
}
.faq-wrap .accordion-item{background:transparent;border:0;border-bottom:1px solid rgba(120,170,255,.1);}
.faq-wrap .accordion-item:last-child{border-bottom:0;}
.faq-wrap .accordion-button{
  position:relative;background:transparent;border:0;box-shadow:none;
  color:var(--text-1);font-size:16px;font-weight:600;
  padding:22px 58px 22px 22px;line-height:1.6;
}
.faq-wrap .accordion-button:not(.collapsed){
  color:#fff;background:rgba(61,107,255,.09);
  box-shadow:inset 3px 0 0 var(--primary);
}
.faq-wrap .accordion-button:focus{box-shadow:none;outline:none;}
.faq-wrap .accordion-button::after{display:none;}
.faq-icon{
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:22px;height:22px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--glass-brd);color:var(--text-2);font-size:11px;
  transition:transform .25s ease,color .25s ease,border-color .25s ease;
}
.faq-wrap .accordion-button:not(.collapsed) .faq-icon{
  transform:translateY(-50%) rotate(45deg);
  color:#fff;border-color:var(--glass-brd-strong);
}
.faq-wrap .accordion-body{
  padding:0 58px 24px 22px;font-size:15px;color:var(--text-2);line-height:1.85;
}

/* ---------- link grid ---------- */
.link-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.link-card{
  display:flex;align-items:center;gap:16px;
  padding:22px 24px;border-radius:var(--r-card);
  background:var(--glass-soft);border:1px solid var(--glass-brd);
  backdrop-filter:blur(14px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.link-card:hover{transform:translateY(-2px);border-color:var(--glass-brd-strong);box-shadow:var(--sh-hover);}
.link-card .lc-icon{
  width:42px;height:42px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;
  background:rgba(61,107,255,.13);border:1px solid rgba(61,107,255,.32);color:#9BB0FF;font-size:15px;
}
.link-card .lc-body{flex:1;min-width:0;}
.link-card h3{font-size:16px;margin-bottom:4px;}
.link-card p{font-size:13.5px;color:var(--text-3);}
.link-card i.lc-go{color:var(--text-3);font-size:12px;transition:transform .2s ease,color .2s ease;}
.link-card:hover i.lc-go{transform:translateX(3px);color:var(--primary-lift);}

/* ---------- cta band ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:34px 38px;border-radius:var(--r-hero);
  background:rgba(18,28,48,.6);border:1px solid var(--glass-brd);
  backdrop-filter:blur(14px);box-shadow:var(--sh-card);
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{font-size:14.5px;color:var(--text-2);}

/* ---------- footer ---------- */
.site-footer{margin-top:var(--sec);background:var(--bg-1);border-top:1px solid var(--glass-brd);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1.1fr 1.5fr;gap:40px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;margin-top:18px;max-width:340px;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--primary-lift);}
.footer-sub{display:flex;gap:8px;}
.footer-sub input{
  flex:1;min-width:0;height:42px;padding:0 14px;border-radius:var(--r-input);
  background:rgba(5,8,15,.6);border:1px solid var(--glass-brd);
  color:var(--text-1);font-size:14px;outline:0;transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-sub input::placeholder{color:var(--text-3);}
.footer-sub input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(61,107,255,.18);}
.footer-sub button{
  height:42px;padding:0 18px;border-radius:var(--r-input);
  background:rgba(61,107,255,.18);border:1px solid rgba(61,107,255,.45);
  color:var(--text-1);font-size:14px;font-weight:600;transition:all .2s ease;
}
.footer-sub button:hover{background:rgba(61,107,255,.3);border-color:var(--primary);}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--glass-brd);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .hero-inner{grid-template-columns:minmax(0,1fr) 300px;gap:36px;}
}
@media (max-width:991.98px){
  :root{--sec:72px;}
  .nav-menu{
    position:fixed;top:0;left:0;right:0;
    display:flex;flex-direction:column;align-items:stretch;gap:6px;
    padding:88px 20px 26px;margin-left:0;
    background:rgba(8,13,26,.97);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    border-bottom:1px solid var(--glass-brd);
    transform:translateY(-110%);
    transition:transform .38s cubic-bezier(.4,.1,.2,1);
    z-index:990;max-height:100vh;overflow-y:auto;
  }
  .nav-menu.open{transform:translateY(0);}
  .nav-link-item{padding:14px 12px;font-size:15.5px;border-radius:12px;}
  .nav-link-item.active{background:rgba(61,107,255,.1);}
  .nav-link-item.active::after{
    left:0;right:auto;top:50%;bottom:auto;transform:translateY(-50%);
    width:3px;height:20px;border-radius:3px;box-shadow:0 0 10px 1px var(--primary-glow);
  }
  .nav-link-item.mobile-cta{
    display:block;text-align:center;margin-top:12px;
    background:rgba(61,107,255,.16);border:1px solid rgba(61,107,255,.45);color:#EDF2FF;
  }
  .nav-link-item.mobile-cta::after{display:none;}
  .nav-toggle{display:grid;}
  .search-btn{display:grid;}
  .icon-btn.hide-mobile{display:none;}
  .cmd-search{
    display:none;position:absolute;left:20px;right:20px;top:78px;
    width:auto;height:46px;
  }
  .site-header.search-open .cmd-search{display:flex;}
  .site-header.search-open{padding-bottom:76px;}
  .nav-actions .btn-glow{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-copy h1{font-size:32px;}
  .hero-lead{font-size:16px;}
  .section-head h2{font-size:26px;}
  .showcase-band{min-height:300px;padding:28px;}
  .band-content h2{font-size:24px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px;}
  .cta-band .btn-glow{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:767.98px){
  :root{--sec:56px;}
  .container-x{padding:0 18px;}
  .wf-grid{grid-template-columns:1fr;}
  .link-grid{grid-template-columns:1fr;}
  .page-hero{padding:120px 0 52px;}
  .hero-copy h1{font-size:28px;}
  .section-head h2{font-size:22px;}
  .wf-card img,.wf-card.tall img{height:190px;}
  .band-content h2{font-size:21px;}
  .faq-wrap .accordion-button{font-size:15px;padding:18px 52px 18px 18px;}
  .faq-wrap .accordion-body{padding:0 52px 20px 18px;font-size:14.5px;}
}
@media (max-width:575.98px){
  .logo-sub,.logo-divider{display:none;}
  .hero-copy h1{font-size:26px;}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .showcase-band{padding:22px;min-height:260px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1020;
  --bg-2:#101A31;
  --primary:#3D6BFF;
  --primary-2:#5B84FF;
  --primary-glow:rgba(61,107,255,.55);
  --accent:#FFB020;
  --accent-2:#35E0C8;
  --text-1:#EDF2FF;
  --text-2:#A8B6D1;
  --text-3:#6C7A96;
  --glass:rgba(18,28,48,.55);
  --glass-soft:rgba(18,28,48,.38);
  --glass-strong:rgba(10,16,32,.96);
  --line:rgba(120,170,255,.14);
  --line-strong:rgba(120,170,255,.30);
  --danger:#FF6B6B;
  --success:#35E0C8;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:12px;
  --radius-hero:24px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.04), 0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-card-hover:inset 0 1px 0 rgba(255,255,255,.08), 0 24px 48px -24px rgba(0,0,0,.9);
  --sec-space:96px;
  --container-w:1200px;

  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--text-2);
  --bs-primary:#3D6BFF;
  --bs-link-color:var(--primary);
  --bs-link-hover-color:var(--primary-2);
  --bs-border-radius:12px;
  --bs-font-sans-serif:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-body-font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  padding-top:74px;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-2);}
button{font-family:inherit;}
ul,ol{padding-left:0;}
h1,h2,h3,h4{color:var(--text-1);font-weight:700;line-height:1.3;margin:0;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}

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

.container-x{
  width:100%;
  max-width:var(--container-w);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1040;
  border-bottom:1px solid transparent;
  transition:background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
}
.site-header.scrolled{
  background:rgba(8,13,26,.78);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:74px;
}
.logo-lock{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text-1);
  text-decoration:none;
}
.logo-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(180deg,rgba(61,107,255,.28),rgba(61,107,255,.10));
  border:1px solid rgba(61,107,255,.45);
  box-shadow:0 0 18px -6px var(--primary-glow);
  color:#fff;
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.02em;
}
.logo-text{display:inline-flex;align-items:center;gap:8px;}
.logo-main{font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:.01em;}
.logo-divider{width:1px;height:16px;background:var(--line-strong);display:inline-block;}
.logo-sub{font-size:11.5px;font-weight:500;color:var(--text-2);white-space:nowrap;}

.nav-menu{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:24px;
}
.nav-link-item{
  position:relative;
  font-size:14.5px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
  text-decoration:none;
}
.nav-link-item:hover{color:var(--text-1);}
.nav-link-item.active{color:var(--text-1);font-weight:600;}
.nav-link-item.active::after{
  content:"";
  position:absolute;
  left:0;right:0;
  bottom:-4px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px 0 var(--primary-glow);
}

.nav-actions{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.cmd-search{
  position:relative;
  display:flex;
  align-items:center;
  gap:8px;
  width:268px;
  height:40px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.cmd-search > i{color:var(--text-3);font-size:13px;}
.cmd-search input{
  flex:1;
  min-width:0;
  background:transparent;
  border:0;
  outline:none;
  color:var(--text-1);
  font-size:13.5px;
}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-hint{
  font-size:11px;
  color:var(--text-3);
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
  white-space:nowrap;
}
.cmd-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(61,107,255,.18), 0 0 20px -6px var(--primary-glow);
}
.suggest-panel{
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  width:100%;
  padding:8px;
  border-radius:14px;
  background:rgba(10,16,32,.96);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);
  box-shadow:0 24px 48px -24px rgba(0,0,0,.9);
  display:none;
  z-index:20;
}
.cmd-search:focus-within .suggest-panel{display:block;}
.suggest-item{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 12px;
  border-radius:10px;
  font-size:13.5px;
  color:var(--text-2);
  text-decoration:none;
}
.suggest-item i{color:var(--primary);font-size:12.5px;}
.suggest-item:hover{background:rgba(61,107,255,.10);color:var(--text-1);}
.suggest-item .tag{
  margin-left:auto;
  font-size:11px;
  color:var(--text-3);
  border:1px solid var(--line);
  border-radius:999px;
  padding:1px 8px;
  white-space:nowrap;
}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  transition:color .2s ease, border-color .2s ease, background .2s ease;
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(255,255,255,.06);}
.btn-glow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  border:0;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  color:#fff;
  text-decoration:none;
  white-space:nowrap;
  background:linear-gradient(180deg,#517CFF,#3D6BFF);
  box-shadow:0 0 0 1px rgba(61,107,255,.5), 0 10px 30px -10px var(--primary-glow);
  transition:transform .2s ease, box-shadow .25s ease, background .2s ease;
}
.btn-glow:hover{
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(61,107,255,.65), 0 16px 38px -12px var(--primary-glow);
}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(61,107,255,.5), 0 6px 18px -10px var(--primary-glow);}
.btn-glow.sm{height:40px;padding:0 20px;font-size:14px;}

.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(10px);
  color:var(--text-1);
  font-size:15px;
  font-weight:500;
  text-decoration:none;
  transition:border-color .2s ease, background .2s ease, transform .2s ease;
}
.btn-ghost:hover{
  color:var(--text-1);
  border-color:rgba(61,107,255,.6);
  background:rgba(61,107,255,.10);
  transform:translateY(-1px);
}

.btn-text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  font-weight:500;
  color:var(--primary);
}
.btn-text-link i{transition:transform .2s ease;}
.btn-text-link:hover i{transform:translateX(3px);}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-1);
}

/* ---------- mobile drawer ---------- */
.mobile-drawer{display:none;}
.drawer-backdrop{
  position:absolute;
  inset:0;
  background:rgba(5,8,15,.68);
  backdrop-filter:blur(4px);
  opacity:0;
  transition:opacity .3s ease;
}
.drawer-panel{
  position:absolute;
  top:0;left:0;right:0;
  padding:18px 20px 30px;
  border-radius:0 0 22px 22px;
  border-bottom:1px solid var(--line);
  background:var(--glass-strong);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transform:translateY(-102%);
  transition:transform .35s cubic-bezier(.4,0,.2,1);
  max-height:100vh;
  overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-1);
}
.drawer-search{
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  margin-bottom:18px;
}
.drawer-search i{color:var(--text-3);font-size:13px;}
.drawer-search input{
  flex:1;min-width:0;border:0;outline:none;background:transparent;
  color:var(--text-1);font-size:14px;
}
.drawer-search input::placeholder{color:var(--text-3);}
.drawer-nav{display:grid;gap:6px;margin-bottom:20px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 14px;
  border-radius:12px;
  font-size:15px;
  color:var(--text-2);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:rgba(61,107,255,.10);color:var(--text-1);}
.drawer-nav a.active{
  color:var(--text-1);
  font-weight:600;
  background:rgba(61,107,255,.12);
  border-color:rgba(61,107,255,.35);
}
.drawer-nav a i{font-size:12px;color:var(--text-3);}
.drawer-cta .btn-glow{width:100%;}
body.drawer-open{overflow:hidden;}
body.drawer-open .mobile-drawer{pointer-events:auto;}
body.drawer-open .drawer-backdrop{opacity:1;}
body.drawer-open .drawer-panel{transform:translateY(0);}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  padding:56px 0 60px;
  min-height:320px;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(760px 380px at 18% 12%, rgba(61,107,255,.26), transparent 68%),
    linear-gradient(180deg, rgba(5,8,15,.82) 0%, rgba(5,8,15,.92) 100%);
}
.cat-hero .container-x{position:relative;z-index:2;}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--text-1);}
.crumb i{font-size:9px;color:var(--text-3);}
.crumb .current{color:var(--text-2);}

.hero-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:44px;
  align-items:end;
}
.hero-title{
  font-size:38px;
  line-height:1.28;
  letter-spacing:-.01em;
  margin-bottom:16px;
}
.hero-lead{
  font-size:16px;
  color:var(--text-2);
  max-width:600px;
  line-height:1.85;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

.info-card{
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  padding:22px 24px;
}
.info-card h2{
  font-size:14px;
  font-weight:600;
  color:var(--text-1);
  letter-spacing:.04em;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:8px;
}
.info-card h2 i{color:var(--primary);font-size:13px;}
.info-rows{display:grid;gap:12px;}
.info-row{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding-bottom:12px;
  border-bottom:1px solid rgba(120,170,255,.10);
  font-size:13.5px;
}
.info-row:last-child{border-bottom:0;padding-bottom:0;}
.info-row .k{color:var(--text-3);white-space:nowrap;}
.info-row .v{color:var(--text-1);text-align:right;font-weight:500;}

/* ---------- sections ---------- */
.section{padding:var(--sec-space) 0;}
.section.tight{padding-top:64px;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:12px;
}
.sec-title{
  font-size:30px;
  line-height:1.32;
  margin-bottom:14px;
}
.sec-desc{font-size:15.5px;color:var(--text-2);line-height:1.85;}

.split-media{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.media-frame{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.media-frame img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.media-copy h3{
  font-size:22px;
  margin-bottom:14px;
}
.media-copy p{font-size:15.5px;line-height:1.85;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:500;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
}
.badge-pill.primary{border-color:rgba(61,107,255,.45);color:#C6D5FF;background:rgba(61,107,255,.12);}
.badge-pill.accent{border-color:rgba(255,176,32,.45);color:#FFD79A;background:rgba(255,176,32,.10);}

.check-list{
  list-style:none;
  margin:0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}
.check-list li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:16px 18px;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--glass-soft);
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-2);
  transition:border-color .25s ease, background .25s ease, transform .25s ease;
}
.check-list li:hover{
  border-color:rgba(61,107,255,.4);
  background:rgba(18,28,48,.62);
  transform:translateY(-2px);
}
.check-list .sq{
  flex:0 0 auto;
  width:9px;height:9px;
  margin-top:8px;
  border-radius:2px;
  background:linear-gradient(135deg,#5B84FF,#3D6BFF);
  box-shadow:0 0 10px -1px var(--primary-glow);
}

.grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card-glass{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  height:100%;
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.card-glass:hover{
  transform:translateY(-2px);
  border-color:rgba(61,107,255,.4);
  box-shadow:var(--shadow-card-hover);
}
.card-thumb{position:relative;overflow:hidden;}
.card-thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .5s ease;
}
.card-glass:hover .card-thumb img{transform:scale(1.04);}
.card-body-x{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-no{
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--accent);
}
.card-title-x{
  font-size:18px;
  font-weight:600;
  color:var(--text-1);
  line-height:1.45;
}
.card-text-x{font-size:14.5px;line-height:1.78;color:var(--text-2);}
.card-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid rgba(120,170,255,.10);
  font-size:13px;
  color:var(--text-3);
  display:flex;
  align-items:center;
  gap:8px;
}
.card-foot i{color:var(--primary);font-size:12px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto;}
.accordion-x .accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:14px !important;
  margin-bottom:12px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.accordion-x .accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:16px;
  font-weight:600;
  padding:20px 22px;
  border:0;
  box-shadow:none;
  display:flex;
  align-items:center;
  gap:14px;
}
.accordion-x .accordion-button::after{
  display:none;
}
.accordion-x .accordion-button .fq-icon{
  margin-left:auto;
  width:26px;height:26px;
  flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:8px;
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-size:12px;
  transition:transform .3s ease, background .3s ease;
}
.accordion-x .accordion-button:not(.collapsed){
  background:rgba(61,107,255,.10);
  color:var(--text-1);
  box-shadow:inset 3px 0 0 var(--primary);
}
.accordion-x .accordion-button:not(.collapsed) .fq-icon{
  transform:rotate(180deg);
  background:rgba(61,107,255,.16);
}
.accordion-x .accordion-button:focus{
  box-shadow:inset 0 0 0 2px rgba(61,107,255,.5);
  border-radius:14px;
}
.accordion-x .accordion-body{
  padding:0 22px 22px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-2);
}

/* ---------- link grid ---------- */
.link-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.link-card{
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 22px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  color:var(--text-1);
  text-decoration:none;
  transition:transform .25s ease, border-color .25s ease, background .25s ease;
}
.link-card:hover{
  color:var(--text-1);
  transform:translateY(-2px);
  border-color:rgba(61,107,255,.4);
  background:rgba(18,28,48,.68);
}
.link-icon{
  width:44px;height:44px;
  flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid rgba(61,107,255,.35);
  background:rgba(61,107,255,.12);
  color:#B9CBFF;
  font-size:15px;
}
.link-card .lc-title{font-size:15.5px;font-weight:600;color:var(--text-1);}
.link-card .lc-desc{font-size:13px;color:var(--text-3);margin-top:2px;}
.link-card .lc-arrow{margin-left:auto;color:var(--text-3);font-size:13px;transition:transform .25s ease;}
.link-card:hover .lc-arrow{transform:translateX(3px);color:var(--primary);}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:36px 40px;
  border-radius:var(--radius-hero);
  border:1px solid var(--line);
  background:
    radial-gradient(620px 240px at 8% 0%, rgba(61,107,255,.22), transparent 70%),
    rgba(18,28,48,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:24px;margin-bottom:10px;}
.cta-band p{font-size:14.5px;color:var(--text-2);max-width:640px;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:0;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.4fr;
  gap:40px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:var(--text-2);
  margin-top:18px;
  max-width:350px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text-1);
  margin-bottom:18px;
}
.footer-col ul{list-style:none;margin:0;display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--text-1);}
.footer-sub{display:flex;gap:8px;margin-top:14px;}
.footer-sub input{
  flex:1;
  min-width:0;
  height:42px;
  padding:0 14px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-1);
  font-size:13.5px;
  outline:none;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.footer-sub input::placeholder{color:var(--text-3);}
.footer-sub input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(61,107,255,.18);
}
.footer-sub button{
  height:42px;
  padding:0 18px;
  border:0;
  border-radius:12px;
  color:#fff;
  font-size:14px;
  font-weight:600;
  background:linear-gradient(180deg,#517CFF,#3D6BFF);
  box-shadow:0 8px 22px -10px var(--primary-glow);
  transition:transform .2s ease;
}
.footer-sub button:hover{transform:translateY(-1px);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:14px;
  margin-top:56px;
  padding:24px 0;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  :root{--sec-space:80px;}
  .cmd-search{width:220px;}
  .nav-menu{gap:18px;}
  .nav-link-item{font-size:14px;}
}

@media (max-width:991.98px){
  :root{--sec-space:72px;}
  .nav-menu{display:none;}
  .cmd-search{display:none;}
  .icon-btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-drawer{display:block;position:fixed;inset:0;z-index:1055;pointer-events:none;}
  .hero-grid{grid-template-columns:1fr;gap:30px;align-items:start;}
  .hero-title{font-size:30px;}
  .split-media{grid-template-columns:1fr;gap:32px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .check-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .btn-glow{width:100%;}
}

@media (max-width:575.98px){
  :root{--sec-space:56px;}
  body{padding-top:66px;font-size:15px;}
  .container-x{padding:0 16px;}
  .nav-inner{height:66px;gap:12px;}
  .logo-sub{display:none;}
  .logo-divider{display:none;}
  .cat-hero{padding:40px 0 44px;}
  .hero-title{font-size:26px;}
  .hero-lead{font-size:15px;}
  .hero-actions .btn-glow,
  .hero-actions .btn-ghost{width:100%;}
  .sec-title{font-size:22px;}
  .media-copy h3{font-size:19px;}
  .grid-3{grid-template-columns:1fr;}
  .link-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:26px 22px;border-radius:18px;}
  .cta-band h2{font-size:20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (min-width:1400px){
  :root{--container-w:1280px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category3 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1020;
  --bg-2:#101A31;
  --primary:#3D6BFF;
  --primary-strong:#5A83FF;
  --primary-glow:rgba(61,107,255,.55);
  --accent:#FFB020;
  --accent-2:#35E0C8;
  --danger:#FF6B6B;
  --glass:rgba(18,28,48,.55);
  --glass-strong:rgba(16,26,49,.86);
  --line:rgba(120,170,255,.14);
  --line-strong:rgba(120,170,255,.3);
  --text-1:#EDF2FF;
  --text-2:#A8B6D1;
  --text-3:#6C7A96;
  --r-card:16px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:12px;
  --r-hero:24px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04), 0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 1px 0 rgba(255,255,255,.07), 0 26px 52px -26px rgba(0,0,0,.9);
  --container:1200px;
  --sec-y:96px;

  --bs-primary:#3D6BFF;
  --bs-primary-rgb:61,107,255;
  --bs-body-bg:#05080F;
  --bs-body-color:#A8B6D1;
  --bs-body-font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-border-radius:16px;
  --bs-border-color:rgba(120,170,255,.14);
  --bs-link-color:#A8B6D1;
  --bs-link-hover-color:#EDF2FF;
  --bs-emphasis-color:#EDF2FF;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-2);text-decoration:none;transition:color .22s ease,border-color .22s ease;}
a:hover{color:var(--text-1);}
h1,h2,h3,h4{color:var(--text-1);font-weight:700;line-height:1.3;margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container-x{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  width:100%;
}
.section{padding:var(--sec-y) 0;}
.section-tight{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;
  color:var(--text-3);border:1px solid var(--line);
  background:var(--glass);border-radius:999px;padding:6px 14px;
  backdrop-filter:blur(10px);
}
.eyebrow i{color:var(--primary);}
.sec-head{max-width:720px;margin-bottom:48px;}
.sec-head h2{font-size:30px;margin:18px 0 14px;letter-spacing:-.01em;}
.sec-head p{font-size:16px;color:var(--text-2);}

/* ---------- buttons ---------- */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:#fff;border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(180deg,var(--primary-strong),var(--primary));
  box-shadow:0 0 0 1px rgba(61,107,255,.5), 0 10px 30px -10px var(--primary-glow);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
  white-space:nowrap;
}
.btn-glow:hover{
  color:#fff;transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(61,107,255,.7), 0 16px 40px -12px var(--primary-glow);
  filter:brightness(1.05);
}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(61,107,255,.5),0 6px 16px -8px var(--primary-glow);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--text-1);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  transition:border-color .22s ease,background .22s ease,transform .22s ease;
  white-space:nowrap;
}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(24,38,66,.7);color:var(--text-1);transform:translateY(-1px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--primary);
  font-size:14px;font-weight:600;
}
.link-arrow i{transition:transform .22s ease;}
.link-arrow:hover{color:var(--primary-strong);}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1050;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:rgba(8,13,26,.72);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;gap:22px;
  height:76px;
}
.logo-lock{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  font-family:"Inter",system-ui,sans-serif;font-weight:700;font-size:15px;color:#fff;letter-spacing:.02em;
  background:linear-gradient(150deg,var(--primary),#2b4fd0);
  box-shadow:0 0 0 1px rgba(120,170,255,.28), 0 10px 26px -14px var(--primary-glow);
}
.logo-text{display:inline-flex;align-items:center;gap:10px;}
.logo-main{font-family:"Inter",system-ui,sans-serif;font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:.01em;}
.logo-divider{width:1px;height:16px;background:var(--line-strong);display:inline-block;}
.logo-sub{font-size:11.5px;font-weight:500;color:var(--text-2);letter-spacing:.02em;}

.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;}
.nav-link-item{
  position:relative;font-size:14.5px;color:var(--text-2);padding:8px 12px;border-radius:9px;
  white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.nav-link-item:hover{color:var(--text-1);background:rgba(120,170,255,.07);}
.nav-link-item.active{color:var(--text-1);}
.nav-link-item.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px 1px var(--primary-glow);
}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:10px;
  width:288px;height:42px;padding:0 12px 0 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.cmd-search i{color:var(--text-3);font-size:13px;}
.cmd-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:var(--text-1);font-size:14px;
}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-hint{
  font-size:11px;color:var(--text-3);border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;flex-shrink:0;
}
.cmd-search.is-focus{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary), 0 0 0 6px rgba(61,107,255,.14);}
.suggest-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:var(--glass-strong);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(18px);box-shadow:0 24px 50px -28px rgba(0,0,0,.9);
  padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.cmd-search.is-focus .suggest-panel{opacity:1;visibility:visible;transform:translateY(0);}
.suggest-item{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
  font-size:13.5px;color:var(--text-2);
}
.suggest-item i{color:var(--primary);font-size:13px;}
.suggest-item:hover{background:rgba(120,170,255,.09);color:var(--text-1);}
.suggest-item .tag{
  margin-left:auto;font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:999px;padding:2px 8px;white-space:nowrap;
}
.icon-btn{
  width:42px;height:42px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);font-size:15px;
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.icon-btn:hover{border-color:var(--line-strong);color:var(--text-1);transform:translateY(-1px);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);font-size:16px;
}
.nav-drawer{
  position:fixed;top:76px;left:0;right:0;z-index:1040;
  background:var(--glass-strong);backdrop-filter:blur(20px);
  border-bottom:1px solid var(--line);
  padding:16px 24px 22px;
  display:none;flex-direction:column;gap:6px;
}
.nav-drawer.open{display:flex;}
.nav-drawer a{
  padding:12px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;
}
.nav-drawer a:hover,.nav-drawer a.active{background:rgba(120,170,255,.09);color:var(--text-1);border-color:var(--line);}
.nav-drawer .btn-glow{width:100%;margin-top:8px;}

/* ---------- breadcrumb ---------- */
.crumb-bar{
  padding:106px 0 0;
}
.crumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--text-1);}
.crumb i{font-size:10px;color:var(--text-3);}
.crumb .current{color:var(--text-2);}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;margin-top:20px;border-radius:var(--r-hero);overflow:hidden;
  min-height:320px;display:flex;align-items:center;
  border:1px solid var(--line);
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(5,8,15,.94) 0%,rgba(5,8,15,.78) 46%,rgba(5,8,15,.6) 100%);
}
.cat-hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-120px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(61,107,255,.34),transparent 68%);
  pointer-events:none;
}
.cat-hero .inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.45fr .9fr;
  gap:40px;align-items:center;width:100%;padding:48px 48px;
}
.cat-hero h1{font-size:40px;letter-spacing:-.015em;margin-bottom:16px;}
.cat-hero .lede{font-size:16.5px;color:var(--text-2);max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;}
.hero-facts{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(16px);padding:22px;box-shadow:var(--shadow-card);
}
.hero-facts h3{font-size:14px;color:var(--text-2);font-weight:600;letter-spacing:.02em;margin-bottom:14px;}
.fact-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;
}
.fact-row:last-child{border-bottom:0;padding-bottom:0;}
.fact-row span:first-child{color:var(--text-3);}
.fact-row span:last-child{color:var(--text-1);font-weight:500;}
.dot-live{
  display:inline-flex;align-items:center;gap:7px;color:var(--accent-2)!important;font-weight:500;
}
.dot-live::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--accent-2);
  box-shadow:0 0 10px 1px rgba(53,224,200,.7);
}
.num-amber{color:var(--accent)!important;font-variant-numeric:tabular-nums;font-family:"Inter",system-ui,sans-serif;font-weight:600;}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:8px;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:26px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,transparent,var(--line-strong) 8%,var(--line-strong) 92%,transparent);
}
.tl-item{position:relative;padding-left:78px;margin-bottom:26px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:12px;top:24px;width:29px;height:29px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:"Inter",system-ui,sans-serif;font-size:12px;font-weight:700;color:#fff;
  background:linear-gradient(150deg,var(--primary),#2b4fd0);
  border:1px solid rgba(120,170,255,.4);
  box-shadow:0 0 0 6px rgba(61,107,255,.12), 0 0 18px -2px var(--primary-glow);
}
.tl-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(14px);padding:22px 24px;box-shadow:var(--shadow-card);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.tl-card:hover{border-color:rgba(61,107,255,.42);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.tl-card h3{font-size:18px;margin-bottom:10px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.tl-card p{font-size:15px;color:var(--text-2);}
.tl-card .chip{
  font-size:12px;font-weight:500;color:var(--primary);
  border:1px solid rgba(61,107,255,.4);border-radius:999px;padding:2px 10px;
  background:rgba(61,107,255,.1);
}
.tl-card .chip.amber{color:var(--accent);border-color:rgba(255,176,32,.42);background:rgba(255,176,32,.1);}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.g-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(14px);padding:26px;box-shadow:var(--shadow-card);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.g-card:hover{border-color:rgba(61,107,255,.42);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.g-card .ic{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(61,107,255,.12);border:1px solid rgba(61,107,255,.32);color:var(--primary);
  font-size:17px;margin-bottom:16px;
}
.g-card h3{font-size:18px;margin-bottom:10px;}
.g-card p{font-size:14.5px;color:var(--text-2);}

.wide-card{
  display:grid;grid-template-columns:1fr 1.1fr;gap:0;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(14px);box-shadow:var(--shadow-card);margin-top:24px;
}
.wide-card .media{position:relative;min-height:280px;background:var(--bg-2);}
.wide-card .media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.wide-card .body{padding:34px;display:flex;flex-direction:column;justify-content:center;}
.wide-card .body h3{font-size:22px;margin-bottom:12px;}
.wide-card .body p{font-size:15px;color:var(--text-2);margin-bottom:18px;}
.check-list li{
  position:relative;padding-left:26px;font-size:14.5px;color:var(--text-2);margin-bottom:9px;
}
.check-list li::before{
  content:"";position:absolute;left:4px;top:12px;width:9px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px 0 var(--primary-glow);
}

/* ---------- row list ---------- */
.row-list{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);backdrop-filter:blur(14px);box-shadow:var(--shadow-card);
}
.row-item{
  display:flex;align-items:center;gap:18px;padding:20px 24px;border-bottom:1px solid var(--line);
  transition:background .22s ease;
}
.row-item:last-child{border-bottom:0;}
.row-item:hover{background:rgba(120,170,255,.06);}
.row-item .ic{
  width:40px;height:40px;flex-shrink:0;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,176,32,.1);border:1px solid rgba(255,176,32,.32);color:var(--accent);font-size:15px;
}
.row-item .txt{flex:1;min-width:0;}
.row-item .txt h4{font-size:16px;margin-bottom:5px;}
.row-item .txt p{font-size:14px;color:var(--text-2);}
.row-item .badge-soft{
  flex-shrink:0;font-size:12px;color:var(--text-3);border:1px solid var(--line);
  border-radius:999px;padding:4px 12px;white-space:nowrap;
}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);
}
.accordion-button{
  background:transparent;color:var(--text-1);font-size:16.5px;font-weight:600;
  padding:22px 46px 22px 18px;box-shadow:none;border-radius:0;
  border-left:3px solid transparent;
}
.accordion-button:not(.collapsed){
  background:rgba(120,170,255,.06);color:var(--text-1);
  border-left:3px solid var(--primary);box-shadow:none;
}
.accordion-button:focus{box-shadow:none;outline:none;}
.accordion-button:focus-visible{outline:2px solid var(--primary);outline-offset:-2px;}
.accordion-button::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  background-image:none;width:auto;height:auto;font-size:13px;color:var(--text-3);
  position:absolute;right:18px;transition:transform .26s ease,color .26s ease;
}
.accordion-button:not(.collapsed)::after{
  content:"\f068";transform:rotate(180deg);color:var(--primary);
}
.accordion-body{
  padding:0 46px 24px 21px;font-size:15px;color:var(--text-2);
}

/* ---------- link grid ---------- */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.link-card{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:20px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  transition:border-color .24s ease,transform .24s ease,background .24s ease;
}
.link-card:hover{border-color:rgba(61,107,255,.42);transform:translateY(-2px);background:rgba(24,38,66,.72);}
.link-card .lc-txt{display:flex;flex-direction:column;gap:4px;min-width:0;}
.link-card .lc-txt strong{font-size:15.5px;color:var(--text-1);font-weight:600;}
.link-card .lc-txt span{font-size:12.5px;color:var(--text-3);}
.link-card i{color:var(--primary);font-size:14px;transition:transform .22s ease;flex-shrink:0;}
.link-card:hover i{transform:translateX(3px);}

/* ---------- cta ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:32px 40px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{font-size:14.5px;color:var(--text-2);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-1);border-top:1px solid var(--line);margin-top:24px;padding-top:72px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1.1fr 1.2fr;gap:40px;padding-bottom:52px;
}
.footer-brand .logo-lock{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:340px;}
.footer-col h4{font-size:14.5px;margin-bottom:18px;color:var(--text-1);}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{font-size:14px;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--text-1);}
.footer-sub{display:flex;gap:8px;}
.footer-sub input{
  flex:1;min-width:0;height:42px;padding:0 14px;border-radius:var(--r-input);
  background:rgba(10,16,32,.8);border:1px solid var(--line);color:var(--text-1);font-size:14px;outline:none;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.footer-sub input::placeholder{color:var(--text-3);}
.footer-sub input:focus{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary),0 0 0 6px rgba(61,107,255,.14);}
.footer-sub button{
  height:42px;padding:0 20px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(180deg,var(--primary-strong),var(--primary));color:#fff;font-size:14px;font-weight:600;
  cursor:pointer;transition:transform .22s ease,box-shadow .22s ease;
  box-shadow:0 8px 24px -12px var(--primary-glow);
}
.footer-sub button:hover{transform:translateY(-1px);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:22px 0 30px;font-size:13px;color:var(--text-3);
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .cmd-search{width:240px;}
  .nav-link-item{font-size:14px;padding:8px 9px;}
}
@media (max-width:1100px){
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .cmd-search{width:210px;}
}
@media (max-width:991px){
  :root{--sec-y:72px;}
  .cat-hero .inner{grid-template-columns:1fr;padding:38px 30px;gap:28px;}
  .cat-hero h1{font-size:32px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .link-grid{grid-template-columns:repeat(2,1fr);}
  .wide-card{grid-template-columns:1fr;}
  .wide-card .media{min-height:220px;position:relative;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .sec-head h2{font-size:26px;}
}
@media (max-width:767px){
  .cmd-search{display:none;}
  .nav-actions .icon-btn{display:none;}
}
@media (max-width:576px){
  :root{--sec-y:56px;}
  .container-x{padding:0 16px;}
  .cat-hero{border-radius:18px;}
  .cat-hero .inner{padding:30px 20px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero .lede{font-size:15px;}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%;}
  .grid-3,.grid-2,.link-grid{grid-template-columns:1fr;}
  .tl-item{padding-left:58px;}
  .timeline::before{left:20px;}
  .tl-dot{left:7px;width:26px;height:26px;font-size:11px;}
  .tl-card{padding:18px;}
  .row-item{flex-wrap:wrap;gap:12px;padding:18px;}
  .row-item .badge-soft{margin-left:58px;}
  .cta-band{flex-direction:column;align-items:stretch;padding:26px 22px;}
  .cta-band .btn-glow{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .sec-head h2{font-size:22px;}
  .wide-card .body{padding:24px;}
  .accordion-button{font-size:15.5px;padding:18px 42px 18px 14px;}
  .accordion-body{padding:0 20px 20px 17px;}
}

/* roulang page: category4 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1020;
  --bg-2:#101A31;
  --primary:#3D6BFF;
  --primary-2:#5B84FF;
  --primary-glow:rgba(61,107,255,.55);
  --accent:#FFB020;
  --accent-2:#35E0C8;
  --glass:rgba(18,28,48,.55);
  --glass-strong:rgba(16,26,49,.85);
  --line:rgba(120,170,255,.14);
  --line-strong:rgba(120,170,255,.3);
  --text-1:#EDF2FF;
  --text-2:#A8B6D1;
  --text-3:#6C7A96;
  --danger:#FF5F6D;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:12px;
  --radius-hero:24px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04), 0 18px 40px -24px rgba(0,0,0,.8);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter",system-ui,sans-serif;

  --bs-primary:#3D6BFF;
  --bs-body-bg:#05080F;
  --bs-body-color:#A8B6D1;
  --bs-border-radius:12px;
  --bs-link-color:#A8B6D1;
  --bs-link-hover-color:#EDF2FF;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;padding-top:72px;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-cn);
  font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-2);text-decoration:none;transition:color .2s ease, border-color .2s ease, background .2s ease;}
a:hover{color:var(--text-1);}
h1,h2,h3,h4{color:var(--text-1);margin:0;line-height:1.3;font-weight:700;}
p{margin:0 0 14px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease;
}
.site-header.scrolled{background:rgba(5,8,15,.9);border-bottom-color:var(--line);}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px;}
.logo-lock{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(61,107,255,.9),rgba(53,224,200,.55));
  color:#fff;font-family:var(--font-num);font-weight:700;font-size:13px;letter-spacing:-.02em;
  box-shadow:0 0 0 1px rgba(120,170,255,.3), 0 8px 22px -10px var(--primary-glow);
}
.logo-text{display:flex;align-items:center;gap:8px;}
.logo-main{font-family:var(--font-num);font-size:18px;font-weight:700;color:var(--text-1);letter-spacing:.01em;}
.logo-divider{width:1px;height:15px;background:var(--line-strong);display:inline-block;}
.logo-sub{font-size:11.5px;font-weight:500;color:var(--text-2);letter-spacing:.02em;}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1 1 auto;}
.nav-link-item{
  position:relative;padding:8px 13px;font-size:14.5px;color:var(--text-2);border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-link-item:hover{color:var(--text-1);background:rgba(120,170,255,.07);}
.nav-link-item.active{color:var(--text-1);font-weight:600;}
.nav-link-item.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px 1px var(--primary-glow);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:270px;height:38px;padding:0 10px 0 14px;border-radius:999px;
  background:rgba(18,28,48,.6);border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(61,107,255,.18);}
.cmd-search i{color:var(--text-3);font-size:13px;}
.cmd-search input{
  flex:1 1 auto;min-width:0;height:100%;background:transparent;border:0;outline:none;
  color:var(--text-1);font-size:13.5px;font-family:var(--font-cn);
}
.cmd-search input::placeholder{color:var(--text-3);}
.cmd-hint{
  font-family:var(--font-num);font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;white-space:nowrap;
}
.suggest-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;padding:8px;
  background:var(--glass-strong);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-card);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:.2s ease;z-index:20;
}
.suggest-panel.show{opacity:1;visibility:visible;transform:translateY(0);}
.suggest-item{
  display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:10px;
  font-size:13.5px;color:var(--text-2);
}
.suggest-item:hover{background:rgba(61,107,255,.12);color:var(--text-1);}
.suggest-item i{color:var(--primary-2);font-size:13px;width:16px;text-align:center;}
.suggest-item .tag{
  margin-left:auto;font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:999px;padding:1px 8px;
}
.icon-btn{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(18,28,48,.6);border:1px solid var(--line);color:var(--text-2);font-size:14px;
}
.icon-btn:hover{border-color:var(--line-strong);color:var(--text-1);background:rgba(18,28,48,.85);}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:var(--radius-btn);border:0;
  background:linear-gradient(180deg,var(--primary-2),var(--primary));
  color:#fff;font-size:15px;font-weight:600;letter-spacing:.01em;
  box-shadow:0 0 0 1px rgba(61,107,255,.5), 0 10px 30px -10px var(--primary-glow);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-glow:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(61,107,255,.65), 0 16px 36px -12px var(--primary-glow);}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(61,107,255,.5), 0 6px 18px -8px var(--primary-glow);}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:12px;border:1px solid var(--line);
  background:rgba(18,28,48,.6);color:var(--text-1);font-size:15px;
}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  background:rgba(18,28,48,.5);border:1px solid var(--line);color:var(--text-1);
  font-size:15px;font-weight:500;backdrop-filter:blur(12px);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(61,107,255,.12);color:var(--text-1);transform:translateY(-1px);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary-2);font-size:14px;font-weight:500;}
.link-arrow i{transition:transform .2s ease;font-size:12px;}
.link-arrow:hover{color:var(--text-1);}
.link-arrow:hover i{transform:translateX(3px);}

/* ============ 抽屉 ============ */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,88vw);z-index:1200;
  background:rgba(10,16,32,.94);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-left:1px solid var(--line);padding:20px;display:flex;flex-direction:column;gap:16px;
  transform:translateY(-100%);transition:transform .3s ease;overflow-y:auto;
}
.nav-drawer.open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--text-1);font-size:16px;
}
.drawer-search{display:flex;align-items:center;gap:8px;height:42px;padding:0 14px;border-radius:12px;
  background:rgba(18,28,48,.7);border:1px solid var(--line);}
.drawer-search input{flex:1 1 auto;background:transparent;border:0;outline:none;color:var(--text-1);font-size:14px;}
.drawer-search i{color:var(--text-3);font-size:13px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{padding:11px 12px;border-radius:10px;font-size:15px;color:var(--text-2);}
.drawer-nav a.active{color:var(--text-1);background:rgba(61,107,255,.14);font-weight:600;}
.drawer-nav a:hover{background:rgba(120,170,255,.08);color:var(--text-1);}
.drawer-cta{margin-top:auto;width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.6);backdrop-filter:blur(2px);
  z-index:1100;opacity:0;visibility:hidden;transition:.25s ease;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--text-1);}
.crumb i{font-size:9px;color:var(--text-3);}
.crumb .current{color:var(--text-2);}

/* ============ Hero ============ */
.cat-hero{position:relative;overflow:hidden;padding:56px 0 52px;border-bottom:1px solid var(--line);}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.32;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 320px at 20% 28%, rgba(61,107,255,.24), transparent 66%),
             linear-gradient(180deg, rgba(5,8,15,.86) 0%, rgba(5,8,15,.95) 100%);
}
.cat-hero .container-x{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:40px;align-items:end;}
.hero-title{font-size:40px;line-height:1.25;letter-spacing:-.01em;margin-bottom:16px;}
.hero-title .hl{
  background:linear-gradient(90deg,var(--primary-2),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:16.5px;line-height:1.85;color:var(--text-2);max-width:640px;margin:0;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;font-weight:500;color:var(--text-2);
  padding:5px 13px;border-radius:999px;
  background:rgba(18,28,48,.55);border:1px solid var(--line);
}
.pill i{font-size:11px;color:var(--primary-2);}
.pill.accent{border-color:rgba(255,176,32,.35);}
.pill.accent i{color:var(--accent);}
.glass-card{
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.glass-card:hover{border-color:rgba(61,107,255,.4);transform:translateY(-2px);
  box-shadow:0 1px 0 rgba(255,255,255,.06), 0 22px 44px -26px rgba(0,0,0,.9);}
.hero-side{padding:22px;}
.hero-side h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.hero-side h3 i{color:var(--primary-2);font-size:13px;}
.meta-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 0;border-bottom:1px dashed rgba(120,170,255,.16);font-size:13.5px;
}
.meta-row:last-child{border-bottom:0;padding-bottom:0;}
.meta-row span:first-child{color:var(--text-3);}
.meta-row span:last-child{color:var(--text-1);font-weight:500;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.num.accent{color:var(--accent);}

/* ============ 数据带 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;margin-top:-30px;position:relative;z-index:5;
  background:var(--glass-strong);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);
}
.stat-strip .stat{padding:22px 26px;border-right:1px solid var(--line);}
.stat-strip .stat:last-child{border-right:0;}
.stat-num{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--text-1);
  font-variant-numeric:tabular-nums;line-height:1.1;display:block;}
.stat-num.accent{color:var(--accent);}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px;display:block;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section-head{margin-bottom:38px;max-width:720px;}
.section-head .eyebrow{
  font-family:var(--font-num);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--primary-2);display:block;margin-bottom:12px;
}
.section-head h2{font-size:30px;margin-bottom:12px;}
.section-head p{font-size:15.5px;color:var(--text-2);margin:0;}

/* ============ 索引区 ============ */
.index-row{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;align-items:start;}
.qa-block{
  position:relative;display:flex;gap:20px;
  padding:26px 26px 24px;margin-bottom:20px;
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);scroll-margin-top:110px;
  transition:border-color .25s ease,transform .25s ease;
}
.qa-block:hover{border-color:rgba(61,107,255,.4);transform:translateY(-2px);}
.qa-num{font-family:var(--font-num);font-size:44px;font-weight:700;line-height:1;
  color:rgba(120,170,255,.5);flex:0 0 auto;letter-spacing:-.03em;padding-top:2px;}
@supports (-webkit-text-stroke:1px #fff){
  .qa-num{color:transparent;-webkit-text-stroke:1.2px rgba(120,170,255,.6);}
}
.qa-body{min-width:0;flex:1 1 auto;}
.qa-body h2{font-size:20px;margin-bottom:10px;}
.qa-body > p{font-size:15px;color:var(--text-2);margin-bottom:16px;}
.step-list{counter-reset:step;display:flex;flex-direction:column;gap:10px;margin-bottom:16px;}
.step-list li{
  position:relative;padding-left:30px;font-size:14.5px;color:var(--text-2);line-height:1.75;
}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:10.5px;font-weight:700;color:var(--primary-2);
  background:rgba(61,107,255,.12);border:1px solid rgba(61,107,255,.28);
}
.qa-note{
  display:flex;align-items:flex-start;gap:9px;
  padding:11px 14px;border-radius:10px;font-size:13.5px;color:var(--text-2);
  background:rgba(255,176,32,.07);border-left:3px solid rgba(255,176,32,.65);
}
.qa-note i{color:var(--accent);font-size:13px;margin-top:3px;}

/* 目录 */
.toc-wrap{position:sticky;top:100px;}
.toc{
  padding:18px;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
}
.toc h3{font-size:14px;color:var(--text-1);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.toc h3 i{color:var(--primary-2);font-size:12px;}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.toc-link{
  position:relative;padding:9px 10px 9px 16px;font-size:13.5px;color:var(--text-2);
  border-radius:0 8px 8px 0;line-height:1.5;
}
.toc-link::before{
  content:"";position:absolute;left:-1px;top:50%;transform:translateY(-50%);
  width:2px;height:0;border-radius:2px;background:var(--primary);
  box-shadow:0 0 8px 1px var(--primary-glow);transition:height .22s ease;
}
.toc-link:hover{background:rgba(120,170,255,.07);color:var(--text-1);}
.toc-link.active{color:var(--text-1);background:rgba(61,107,255,.1);font-weight:500;}
.toc-link.active::before{height:60%;}
.toc-tip{margin-top:14px;padding-top:14px;border-top:1px dashed rgba(120,170,255,.18);
  font-size:12.5px;color:var(--text-3);line-height:1.7;}

/* ============ 自查宽卡 ============ */
.wide-card{
  display:grid;grid-template-columns:minmax(0,0.85fr) minmax(0,1.15fr);gap:0;
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius-hero);overflow:hidden;
  box-shadow:var(--shadow-card);
}
.wide-card .thumb{position:relative;min-height:300px;}
.wide-card .thumb img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.wide-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(5,8,15,.15),rgba(5,8,15,.7));
}
.wide-card .body{padding:36px 38px;}
.wide-card h2{font-size:26px;margin-bottom:14px;}
.wide-card p{font-size:15px;color:var(--text-2);}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:22px;}
.check-list li{display:flex;align-items:flex-start;gap:11px;font-size:14.5px;color:var(--text-2);}
.check-list i{color:var(--accent-2);font-size:13px;margin-top:5px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.acc .accordion-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.acc .accordion-button{
  background:transparent;color:var(--text-1);font-size:16px;font-weight:600;
  padding:18px 52px 18px 22px;box-shadow:none;border-left:3px solid transparent;
  transition:background .2s ease,border-color .2s ease;
}
.acc .accordion-button:hover{background:rgba(120,170,255,.06);}
.acc .accordion-button:not(.collapsed){
  background:rgba(61,107,255,.1);color:var(--text-1);border-left-color:var(--primary);
  box-shadow:none;
}
.acc .accordion-button:focus{box-shadow:0 0 0 2px rgba(61,107,255,.35);}
.acc .accordion-button::after{display:none;}
.acc-icon{
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:7px;display:flex;align-items:center;justify-content:center;
  font-size:11px;color:var(--primary-2);
  background:rgba(61,107,255,.12);border:1px solid rgba(61,107,255,.3);
  transition:transform .25s ease,color .25s ease;
}
.acc .accordion-button:not(.collapsed) .acc-icon{transform:translateY(-50%) rotate(180deg);color:var(--accent);}
.acc .accordion-body{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ============ 延伸链接 ============ */
.link-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.link-card{
  display:flex;align-items:center;gap:16px;padding:20px 22px;
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:border-color .25s ease,transform .25s ease,background .25s ease;
}
.link-card:hover{border-color:rgba(61,107,255,.45);transform:translateY(-2px);background:rgba(18,28,48,.75);}
.link-card .ico{
  width:44px;height:44px;border-radius:12px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--primary-2);
  background:rgba(61,107,255,.12);border:1px solid rgba(61,107,255,.28);
}
.link-card h3{font-size:15.5px;margin-bottom:4px;}
.link-card p{font-size:13px;color:var(--text-3);margin:0;}
.link-card .go{margin-left:auto;color:var(--text-3);font-size:13px;transition:transform .2s ease,color .2s ease;}
.link-card:hover .go{transform:translateX(3px);color:var(--primary-2);}

/* ============ CTA ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:26px;
  padding:32px 36px;border-radius:var(--radius-hero);
  background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{margin:0;font-size:14.5px;color:var(--text-2);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;padding:72px 0 0;background:var(--bg-1);
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;margin:16px 0 0;max-width:340px;}
.footer-col h4{font-size:14.5px;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--text-1);}
.footer-sub{display:flex;gap:8px;margin-top:12px;}
.footer-sub input{
  flex:1 1 auto;min-width:0;height:42px;padding:0 14px;border-radius:var(--radius-input);
  background:rgba(18,28,48,.7);border:1px solid var(--line);color:var(--text-1);
  font-size:13.5px;font-family:var(--font-cn);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-sub input::placeholder{color:var(--text-3);}
.footer-sub input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(61,107,255,.18);}
.footer-sub button{
  height:42px;padding:0 20px;border-radius:var(--radius-input);border:0;cursor:pointer;
  background:linear-gradient(180deg,var(--primary-2),var(--primary));color:#fff;
  font-size:14px;font-weight:600;
  box-shadow:0 0 0 1px rgba(61,107,255,.45), 0 10px 26px -12px var(--primary-glow);
  transition:filter .2s ease,transform .2s ease;
}
.footer-sub button:hover{filter:brightness(1.07);transform:translateY(-1px);}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-menu{gap:0;}
  .nav-link-item{padding:8px 10px;font-size:14px;}
  .cmd-search{width:220px;}
}
@media (max-width:991px){
  body{padding-top:64px;}
  .nav-inner{height:64px;gap:14px;}
  .nav-menu,.cmd-search,.icon-btn{display:none;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .hero-grid{grid-template-columns:1fr;gap:26px;align-items:start;}
  .hero-title{font-size:32px;}
  .section{padding:72px 0;}
  .section-head h2{font-size:26px;}
  .index-row{grid-template-columns:1fr;gap:20px;}
  .toc-wrap{position:sticky;top:72px;z-index:9;order:-1;}
  .toc{padding:12px;}
  .toc h3,.toc-tip{display:none;}
  .toc-list{flex-direction:row;overflow-x:auto;border-left:0;gap:8px;padding-bottom:4px;
    scrollbar-width:thin;}
  .toc-link{white-space:nowrap;flex:0 0 auto;border:1px solid var(--line);border-radius:999px;
    padding:7px 14px;font-size:13px;}
  .toc-link::before{display:none;}
  .toc-link.active{border-color:var(--primary);background:rgba(61,107,255,.16);color:var(--text-1);}
  .wide-card{grid-template-columns:1fr;}
  .wide-card .thumb{min-height:220px;}
  .wide-card .body{padding:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .footer-brand{grid-column:1 / -1;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px;}
  .cta-band .btn-glow{width:100%;}
}
@media (max-width:575px){
  .container-x{padding:0 16px;}
  .logo-divider,.logo-sub{display:none;}
  .hero-title{font-size:28px;}
  .hero-lead{font-size:15px;}
  .cat-hero{padding:36px 0 40px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:22px;}
  .stat-strip{grid-template-columns:1fr;margin-top:-20px;}
  .stat-strip .stat{border-right:0;border-bottom:1px solid var(--line);padding:18px 20px;}
  .stat-strip .stat:last-child{border-bottom:0;}
  .qa-block{flex-direction:column;gap:12px;padding:22px 20px;}
  .qa-num{font-size:36px;}
  .qa-body h2{font-size:18px;}
  .wide-card h2{font-size:21px;}
  .link-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;}
}