/* roulang page: index */
:root{
  --bg-deep: rgba(6,12,24,1);
  --bg-bottom: rgba(4,8,18,1);
  --panel: rgba(14,23,40,.72);
  --panel-strong: rgba(11,19,34,.92);
  --brand: rgba(47,123,255,1);
  --brand-deep: #1b4ed8;
  --cyan: rgba(38,211,242,1);
  --violet: rgba(124,95,255,1);
  --success: rgba(46,214,168,1);
  --warning: rgba(246,185,60,1);
  --danger: rgba(255,94,126,1);
  --text-main: rgba(238,243,251,1);
  --text-sub: rgba(171,182,206,1);
  --text-aux: rgba(122,135,164,1);
  --border-weak: rgba(255,255,255,.08);
  --border-mid: rgba(255,255,255,.14);
  --border-strong: rgba(140,180,255,.45);
  --radius-sm: 10px;
  --radius-card: 18px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --shadow-card: 0 20px 60px rgba(2,6,18,.45);
  --shadow-btn: 0 0 0 1px rgba(120,160,255,.3), 0 8px 30px rgba(47,123,255,.4);
  --container: 1200px;
  --font-family: "PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-deep);
  color:var(--text-main);
  font-family:var(--font-family);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.page-glow{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  overflow:hidden;
}
.page-glow::before{
  content:"";
  position:absolute;
  top:-120px;
  left:-80px;
  width:520px;
  height:520px;
  background:radial-gradient(circle, rgba(47,123,255,.16), transparent 68%);
}
.page-glow::after{
  content:"";
  position:absolute;
  right:-160px;
  top:24%;
  width:620px;
  height:620px;
  background:radial-gradient(circle, rgba(124,95,255,.13), transparent 68%);
}
.page-content{
  position:relative;
  z-index:1;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
a{
  color:inherit;
  text-decoration:none;
}
img{
  max-width:100%;
  display:block;
}
button{
  font-family:inherit;
  border:none;
  background:none;
  color:inherit;
  cursor:pointer;
}
input{
  border:none;
  outline:none;
  background:none;
  color:inherit;
  font-family:inherit;
}
ul,ol{list-style:none}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{
  padding:96px 0;
}
.section-head{
  margin-bottom:48px;
  max-width:820px;
}
.section-head .eyebrow{
  color:var(--cyan);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
}
.section-head .eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),transparent);
  border-radius:2px;
}
.section-head h2{
  font-size:clamp(26px,3vw,42px);
  font-weight:750;
  line-height:1.3;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.section-head p{
  color:var(--text-sub);
  font-size:16px;
  line-height:1.85;
}
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:4px;
}

/* countdown bar */
.countdown-bar{
  height:44px;
  border-bottom:1px solid var(--border-mid);
  background:rgba(11,19,34,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.countdown-inner{
  max-width:1200px;
  height:100%;
  margin:0 auto;
  padding:0 24px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:16px;
  position:relative;
}
.cd-text{
  font-size:14px;
  color:var(--text-sub);
  white-space:nowrap;
}
.cd-digits{
  display:flex;
  align-items:center;
  gap:6px;
  color:var(--cyan);
  font-variant-numeric:tabular-nums;
}
.cd-block{
  display:inline-flex;
  align-items:baseline;
  gap:3px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-weak);
  padding:2px 7px;
  border-radius:8px;
}
.cd-num{
  font-size:15px;
  font-weight:800;
  min-width:20px;
  text-align:center;
}
.cd-unit{
  font-size:12px;
}
.cd-pulse{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(38,211,242,.7);
  animation:pulse 2s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(38,211,242,.45)}
  70%{box-shadow:0 0 0 9px rgba(38,211,242,0)}
  100%{box-shadow:0 0 0 0 rgba(38,211,242,0)}
}
.countdown-cta{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  color:#fff;
  background:linear-gradient(135deg,rgba(47,123,255,.9),rgba(28,72,194,.9));
  box-shadow:0 0 0 1px rgba(120,160,255,.35);
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease;
}
.countdown-cta:hover{
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(120,160,255,.45),0 6px 18px rgba(47,123,255,.35);
}

/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(4,8,18,.92);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border-weak);
  transition:border-color .3s ease,box-shadow .3s ease,background .3s ease;
}
.site-header.scrolled{
  background:rgba(4,8,18,.86);
  border-bottom-color:var(--border-mid);
  box-shadow:0 14px 40px rgba(2,6,18,.4);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:40px;
  height:40px;
  border-radius:13px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,rgba(47,123,255,.2),rgba(38,211,242,.08));
  border:1px solid var(--border-mid);
}
.logo-mark svg{
  width:26px;
  height:26px;
}
.logo-word{
  font-size:20px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text-main);
  white-space:nowrap;
}
.logo-word span{
  color:var(--cyan);
}
.nav-main{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:12px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:72px;
  font-size:15px;
  font-weight:500;
  color:var(--text-sub);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:12px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(38,211,242,.1));
  opacity:0;
  transform:scaleX(.5);
  transition:opacity .2s ease,transform .2s ease;
}
.nav-link:hover,
.nav-link.active{
  color:var(--text-main);
}
.nav-link:hover::after,
.nav-link.active::after{
  opacity:1;
  transform:scaleX(1);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.search-box{
  position:relative;
  width:220px;
}
.search-box svg{
  position:absolute;
  left:14px;
  top:50%;
  transform:translateY(-50%);
  width:15px;
  height:15px;
  color:var(--text-aux);
  pointer-events:none;
}
.search-box input{
  width:100%;
  height:38px;
  padding:0 14px 0 38px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--border-weak);
  font-size:14px;
  color:var(--text-main);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{
  color:var(--text-aux);
}
.search-box input:focus{
  border-color:rgba(38,211,242,.5);
  box-shadow:0 0 0 3px rgba(38,211,242,.12);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:42px;
  padding:0 22px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.btn-ghost{
  border:1px solid var(--border-mid);
  color:var(--text-sub);
  background:rgba(255,255,255,.03);
}
.btn-ghost:hover{
  color:var(--text-main);
  border-color:rgba(255,255,255,.28);
  box-shadow:0 0 0 3px rgba(255,255,255,.04);
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,rgba(47,123,255,1),rgba(28,72,194,1));
  box-shadow:var(--shadow-btn);
}
.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(120,160,255,.4),0 12px 36px rgba(47,123,255,.45);
}
.btn-primary:active{
  transform:translateY(0) scale(.98);
}
.btn-lg{
  height:52px;
  padding:0 32px;
  font-size:16px;
}
.search-toggle,
.menu-toggle{
  display:none;
  width:38px;
  height:38px;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid var(--border-weak);
  color:var(--text-sub);
  transition:background .2s ease,color .2s ease;
}
.search-toggle:hover,
.menu-toggle:hover{
  background:rgba(255,255,255,.05);
  color:var(--text-main);
}
.mobile-search-pop{
  display:none;
}

/* hero */
.hero{
  position:relative;
  padding:96px 0 80px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  z-index:-1;
  background-image:linear-gradient(90deg,rgba(6,12,24,.96) 0%,rgba(6,12,24,.78) 42%,rgba(6,12,24,.42) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
}
.hero-grid{
  display:grid;
  grid-template-columns:55% 45%;
  gap:56px;
  align-items:center;
}
.hero-copy .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--cyan);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  margin-bottom:20px;
}
.hero-title{
  font-size:clamp(32px,6vw,64px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:24px;
}
.hero-title em{
  font-style:normal;
  background:linear-gradient(135deg,var(--cyan),rgba(47,123,255,1));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-desc{
  font-size:17px;
  color:var(--text-sub);
  line-height:1.9;
  max-width:480px;
  margin-bottom:32px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-status-card{
  background:rgba(14,23,40,.82);
  border:1px solid var(--border-mid);
  border-radius:24px;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:28px;
  box-shadow:var(--shadow-card);
}
.status-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:16px;
  border-bottom:1px solid var(--border-weak);
  margin-bottom:16px;
}
.status-head span{
  font-size:15px;
  color:var(--text-sub);
}
.status-open{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  background:rgba(46,214,168,.1);
  color:var(--success);
  border:1px solid rgba(46,214,168,.25);
  font-size:13px;
  font-weight:700;
}
.status-open::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--success);
  box-shadow:0 0 0 0 rgba(46,214,168,.5);
  animation:pulse 2s infinite;
}
.status-list{
  display:grid;
  gap:14px;
  margin-bottom:20px;
}
.status-row{
  display:flex;
  justify-content:space-between;
  gap:16px;
  font-size:14px;
}
.status-row dt{
  color:var(--text-aux);
  white-space:nowrap;
}
.status-row dd{
  color:var(--text-sub);
  text-align:right;
}
.status-row dd strong{
  color:var(--text-main);
  font-weight:600;
}
.status-note{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:13px;
  color:var(--text-sub);
  background:rgba(255,255,255,.03);
  border:1px solid var(--border-weak);
  border-radius:12px;
  padding:12px 14px;
  line-height:1.6;
}
.status-note svg{
  width:16px;
  height:16px;
  flex-shrink:0;
  color:var(--warning);
  margin-top:2px;
}
.hero-metrics{
  margin-top:72px;
  display:flex;
  border-top:1px solid var(--border-weak);
  border-bottom:1px solid var(--border-weak);
  flex-wrap:wrap;
}
.hero-metric{
  flex:1;
  min-width:200px;
  padding:18px 28px;
  border-left:1px solid var(--border-weak);
}
.hero-metric:first-child{border-left:none;padding-left:0}
.hero-metric strong{
  display:block;
  font-size:15px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:2px;
}
.hero-metric span{
  font-size:14px;
  color:var(--text-aux);
}

/* bento benefits */
.benefits{
  border-top:1px solid var(--border-weak);
}
.bento-grid{
  display:grid;
  grid-template-columns:1.04fr .96fr;
  gap:24px;
  align-items:stretch;
}
.bento-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--border-mid);
  background:var(--panel);
  box-shadow:var(--shadow-card);
  padding:32px;
}
.bento-main{
  grid-row:span 2;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  min-height:480px;
  background-color:#0b1426;
  background-image:linear-gradient(180deg,rgba(6,12,24,.35),rgba(6,12,24,.92) 86%),url('/assets/images/coverpic/cover-1.webp');
  background-size:cover;
  background-position:center;
}
.bento-main .bento-icon{
  margin-bottom:20px;
}
.bento-icon{
  width:46px;
  height:46px;
  border-radius:14px;
  background:linear-gradient(135deg,rgba(47,123,255,.22),rgba(38,211,242,.08));
  border:1px solid var(--border-mid);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--cyan);
}
.bento-icon svg{
  width:22px;
  height:22px;
}
.bento-card h3{
  font-size:22px;
  font-weight:700;
  margin-bottom:14px;
  line-height:1.45;
}
.bento-card p{
  color:var(--text-sub);
  font-size:15px;
  line-height:1.85;
  margin-bottom:16px;
}
.bento-feature-list{
  margin-bottom:14px;
}
.bento-feature-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15px;
  color:var(--text-sub);
  padding:7px 0;
}
.bento-feature-list li::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  flex-shrink:0;
  margin-top:10px;
}
.bento-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:rgba(170,190,240,1);
  font-size:14px;
  font-weight:600;
  transition:color .2s ease,gap .2s ease;
}
.bento-link:hover{
  color:var(--cyan);
  gap:12px;
}
.bento-tag{
  position:absolute;
  top:20px;
  right:20px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  color:var(--cyan);
  background:rgba(38,211,242,.1);
  border:1px solid rgba(38,211,242,.25);
}
.bento-mini{
  min-height:220px;
}
.bento-highlight{
  color:var(--text-main);
  font-size:26px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.bento-highlight small{
  font-size:14px;
  color:var(--text-aux);
  font-weight:500;
  margin-left:4px;
}

/* gallery */
.gallery-section{
  border-top:1px solid var(--border-weak);
}
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  grid-auto-flow:dense;
  gap:24px;
}
.gallery-card{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--border-mid);
  background:#0b1426;
  box-shadow:var(--shadow-card);
  min-height:260px;
}
.gallery-card img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.gallery-card:hover img{
  transform:scale(1.03);
}
.gallery-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,12,24,.05) 30%,rgba(6,12,24,.88) 100%);
}
.gallery-tag{
  position:absolute;
  top:18px;
  left:18px;
  z-index:2;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  color:var(--cyan);
  background:rgba(6,12,24,.6);
  border:1px solid rgba(38,211,242,.3);
  backdrop-filter:blur(8px);
}
.gallery-note{
  position:absolute;
  left:20px;
  right:20px;
  bottom:20px;
  z-index:2;
}
.gallery-note strong{
  display:block;
  font-size:17px;
  font-weight:700;
  color:#fff;
  margin-bottom:4px;
  line-height:1.5;
}
.gallery-note span{
  font-size:14px;
  color:rgba(221,229,242,.85);
  line-height:1.7;
  display:block;
  max-width:420px;
}
.gallery-main{
  grid-column:span 7;
  grid-row:span 2;
  min-height:440px;
}
.gallery-side-top{
  grid-column:span 5;
  min-height:208px;
}
.gallery-side-bottom{
  grid-column:span 5;
  min-height:208px;
}

/* CTA */
.cta-region{
  padding:56px 0 96px;
}
.cta-panel{
  position:relative;
  overflow:hidden;
  text-align:center;
  border-radius:32px;
  border:1px solid var(--border-strong);
  background:linear-gradient(135deg,rgba(47,123,255,.16),rgba(14,23,40,.66) 46%);
  box-shadow:0 30px 80px rgba(2,6,18,.55), inset 0 0 60px rgba(47,123,255,.08);
  padding:72px 40px 56px;
}
.cta-panel::before{
  content:"";
  position:absolute;
  top:-140px;
  left:50%;
  transform:translateX(-50%);
  width:500px;
  height:300px;
  background:radial-gradient(ellipse,rgba(47,123,255,.25),transparent 68%);
  pointer-events:none;
}
.cta-panel h2{
  position:relative;
  font-size:clamp(26px,3.4vw,42px);
  line-height:1.35;
  font-weight:750;
  max-width:760px;
  margin:0 auto 18px;
}
.cta-panel p{
  position:relative;
  font-size:16px;
  color:var(--text-sub);
  max-width:620px;
  margin:0 auto 32px;
  line-height:1.85;
}
.cta-actions{
  position:relative;
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
}
.cta-note{
  position:relative;
  margin-top:28px;
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:8px 24px;
  font-size:14px;
  color:var(--text-aux);
}
.cta-note span{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.cta-note span::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--cyan);
}

/* FAQ + rules */
.faq-rules{
  border-top:1px solid var(--border-weak);
}
.faq-wrap{
  display:grid;
  grid-template-columns:2fr 3fr;
  gap:64px;
}
.rule-panel h2{
  font-size:clamp(26px,3vw,40px);
  line-height:1.3;
  margin-bottom:18px;
  font-weight:750;
}
.rule-panel > p{
  color:var(--text-sub);
  font-size:16px;
  line-height:1.85;
  margin-bottom:28px;
}
.rule-list{
  display:grid;
  gap:14px;
}
.rule-item{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:16px 18px;
  border-radius:16px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--border-weak);
}
.rule-icon{
  width:32px;
  height:32px;
  flex-shrink:0;
  border-radius:10px;
  background:rgba(47,123,255,.12);
  border:1px solid rgba(47,123,255,.2);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--cyan);
}
.rule-icon svg{
  width:16px;
  height:16px;
}
.rule-item p{
  font-size:15px;
  color:var(--text-sub);
  line-height:1.75;
}
.rule-update{
  margin-top:28px;
  font-size:13px;
  color:var(--text-aux);
  display:flex;
  align-items:center;
  gap:8px;
}
.rule-update::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--success);
}
.faq-list{
  display:grid;
  gap:14px;
}
.faq-item{
  background:rgba(14,23,40,.72);
  border:1px solid var(--border-mid);
  border-radius:18px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{
  border-color:rgba(38,211,242,.38);
  box-shadow:0 16px 40px rgba(2,6,18,.35);
}
.faq-q{
  list-style:none;
  display:flex;
  align-items:center;
  gap:14px;
  padding:20px 22px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  color:var(--text-main);
  position:relative;
}
.faq-q::-webkit-details-marker{
  display:none;
}
.faq-q mark{
  background:none;
  color:var(--cyan);
  font-weight:700;
  font-size:13px;
  letter-spacing:.04em;
  flex-shrink:0;
}
.faq-icon{
  margin-left:auto;
  width:30px;
  height:30px;
  flex-shrink:0;
  border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-weak);
  transition:transform .25s ease,background .2s ease;
}
.faq-icon svg{
  width:15px;
  height:15px;
  color:var(--text-aux);
}
.faq-item[open] .faq-icon{
  transform:rotate(180deg);
  background:rgba(38,211,242,.12);
}
.faq-a{
  padding:0 22px 22px 52px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-sub);
}

/* news */
.news-section{
  border-top:1px solid var(--border-weak);
}
.news-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:40px;
  max-width:100%;
}
.news-head h2{
  font-size:clamp(26px,3vw,42px);
  font-weight:750;
  line-height:1.3;
  margin-bottom:8px;
}
.news-head p{
  color:var(--text-sub);
}
.news-link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  color:rgba(170,190,240,1);
  white-space:nowrap;
  transition:gap .2s ease,color .2s ease;
}
.news-link-more:hover{
  color:var(--cyan);
  gap:12px;
}
.news-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:24px;
}
.news-feature{
  position:relative;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  min-height:440px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:#0b1426;
  border:1px solid var(--border-mid);
  padding:28px;
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease;
}
.news-feature:hover{
  border-color:var(--border-strong);
}
.news-feature-bg{
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(6,12,24,.15) 20%,rgba(6,12,24,.92) 100%),url('/assets/images/coverpic/cover-4.webp');
  background-size:cover;
  background-position:center;
  transition:transform .6s ease;
}
.news-feature:hover .news-feature-bg{
  transform:scale(1.03);
}
.news-feature-content{
  position:relative;
  z-index:2;
}
.badge{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  background:rgba(38,211,242,.12);
  border:1px solid rgba(38,211,242,.3);
  color:var(--cyan);
  font-size:12px;
  font-weight:700;
  margin-bottom:14px;
}
.news-feature-content h3{
  font-size:22px;
  line-height:1.55;
  font-weight:700;
  color:#fff;
  margin-bottom:10px;
  max-width:480px;
}
.news-feature-content p{
  color:rgba(224,232,246,.85);
  font-size:15px;
  line-height:1.85;
  max-width:480px;
  margin-bottom:16px;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--text-aux);
}
.news-divider{
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--text-aux);
  opacity:.4;
}
.news-read{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:rgba(170,190,240,1);
  font-size:14px;
}
.news-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.news-item{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:20px 22px;
  border-radius:18px;
  background:var(--panel);
  border:1px solid var(--border-mid);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.news-item:hover{
  border-color:var(--border-strong);
  background:rgba(18,30,52,.78);
  transform:translateY(-2px);
}
.news-item-top{
  display:flex;
  align-items:center;
  gap:10px;
}
.news-item .badge{
  margin-bottom:0;
  padding:3px 10px;
  font-size:11px;
}
.news-item-time{
  margin-left:auto;
  font-size:13px;
  color:var(--text-aux);
  white-space:nowrap;
}
.news-item h3{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  color:var(--text-main);
  transition:color .2s ease;
}
.news-item:hover h3{
  color:#fff;
}
.news-item p{
  color:var(--text-sub);
  font-size:14px;
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:2px;
}
.news-empty{
  grid-column:1 / -1;
  background:var(--panel);
  border:1px dashed var(--border-mid);
  border-radius:22px;
  padding:48px 28px;
  text-align:center;
  color:var(--text-sub);
  font-size:15px;
}

/* footer */
.site-footer{
  margin-top:auto;
  background:rgba(4,8,18,.92);
  border-top:1px solid var(--border-mid);
}
.footer-top{
  padding:64px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1.4fr 1fr;
  gap:40px;
}
.footer-brand .logo{
  margin-bottom:18px;
}
.footer-brand p{
  color:var(--text-sub);
  font-size:15px;
  line-height:1.85;
  max-width:320px;
}
.footer-title{
  font-size:15px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:18px;
}
.footer-links{
  display:grid;
  gap:10px;
}
.footer-links a{
  color:var(--text-sub);
  font-size:14px;
  transition:color .2s ease;
}
.footer-links a:hover{
  color:var(--cyan);
}
.footer-text{
  color:var(--text-sub);
  font-size:14px;
  line-height:1.8;
}
.footer-bottom{
  border-top:1px solid var(--border-weak);
  padding:24px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.footer-bottom span{
  color:var(--text-aux);
  font-size:13px;
}
.footer-bottom a{
  color:var(--text-aux);
  transition:color .2s ease;
}
.footer-bottom a:hover{
  color:var(--text-main);
}
.footer-watermark{
  color:rgba(255,255,255,.05);
}

/* tablet */
@media (max-width:1024px){
  .section{padding:72px 0}
  .hero-grid{
    grid-template-columns:1fr;
    gap:40px;
  }
  .hero-status-card{
    max-width:560px;
  }
  .bento-grid{
    grid-template-columns:1fr 1fr;
  }
  .bento-main{
    grid-row:span 1;
    min-height:420px;
  }
  .bento-mini{
    min-height:200px;
  }
  .gallery-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .gallery-main{
    grid-column:span 2;
    min-height:360px;
  }
  .gallery-side-top,
  .gallery-side-bottom{
    grid-column:span 1;
    min-height:240px;
  }
  .faq-wrap{
    grid-template-columns:1fr;
    gap:48px;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:32px;
  }
  .nav-main{
    gap:14px;
    margin-left:0;
  }
  .search-box{
    width:170px;
  }
}
@media (max-width:900px){
  .hero-metrics{
    display:block;
  }
  .hero-metric{
    border-left:none;
    border-bottom:1px solid var(--border-weak);
    padding:12px 0;
  }
  .hero-metric:last-child{
    border-bottom:none;
  }
  .hero-metric:first-child{
    padding-left:0;
  }
}
/* mobile navigation */
@media (max-width:768px){
  body.menu-open,
  body.search-open{
    overflow:hidden;
  }
  .countdown-inner{
    justify-content:center;
  }
  .cd-text{
    font-size:12px;
  }
  .countdown-cta{
    display:none;
  }
  .header-inner{
    height:60px;
    gap:6px;
  }
  .logo-word{
    font-size:18px;
  }
  .logo-mark{
    width:36px;
    height:36px;
    border-radius:12px;
  }
  .nav-main{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:min(82vw,340px);
    background:rgba(6,12,24,.98);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border-left:1px solid var(--border-mid);
    box-shadow:-24px 0 60px rgba(2,6,18,.65);
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    margin:0;
    padding:88px 24px 32px;
    transform:translateX(105%);
    transition:transform .35s ease;
    z-index:1001;
  }
  body.menu-open .nav-main{
    transform:translateX(0);
  }
  .nav-link{
    height:auto;
    padding:14px 10px;
    font-size:16px;
    border-radius:12px;
    color:var(--text-main);
  }
  .nav-link::after{
    display:none;
  }
  .nav-link.active{
    color:var(--cyan);
    background:rgba(38,211,242,.08);
  }
  .desktop-search,
  .header-login,
  .header-primary{
    display:none;
  }
  .search-toggle,
  .menu-toggle{
    display:inline-flex;
  }
  .header-actions{
    gap:6px;
  }
  .btn-primary.mobile-cta{
    display:inline-flex;
    height:36px;
    padding:0 14px;
    font-size:13px;
    box-shadow:none;
  }
  .mobile-search-pop{
    position:absolute;
    top:calc(100% + 8px);
    left:16px;
    right:16px;
    background:var(--panel-strong);
    border:1px solid var(--border-mid);
    border-radius:16px;
    padding:12px;
    box-shadow:0 20px 50px rgba(2,6,18,.7);
  }
  body.search-open .mobile-search-pop{
    display:block;
  }
  .mobile-search-pop form{
    display:flex;
    align-items:center;
    gap:8px;
  }
  .mobile-search-pop input{
    flex:1;
    height:40px;
    border-radius:12px;
    background:rgba(255,255,255,.06);
    border:1px solid var(--border-mid);
    padding:0 14px;
    font-size:14px;
    color:var(--text-main);
  }
  .mobile-search-pop button{
    width:40px;
    height:40px;
    border-radius:12px;
    background:var(--brand);
    display:inline-flex;
    align-items:center;
    justify-content:center;
  }
  .hero{
    padding:64px 0 56px;
  }
  .hero-title{
    font-size:clamp(34px,9vw,44px);
  }
  .hero-actions .btn{
    height:48px;
    padding:0 20px;
  }
  .bento-grid,
  .news-grid{
    grid-template-columns:1fr;
  }
  .bento-main{
    min-height:360px;
    grid-row:span 1;
  }
  .gallery-grid{
    grid-template-columns:1fr;
  }
  .gallery-main,
  .gallery-side-top,
  .gallery-side-bottom{
    grid-column:span 1;
    min-height:250px;
  }
  .gallery-main{
    min-height:360px;
  }
  .gallery-note strong{
    font-size:16px;
  }
  .faq-wrap{
    gap:40px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:24px;
  }
  .footer-top{
    padding:48px 0 24px;
  }
  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
  }
  .section{
    padding:56px 0;
  }
  .section-head{
    margin-bottom:32px;
  }
  .cta-panel{
    padding:56px 24px 40px;
  }
  .cta-actions .btn{
    height:48px;
    padding:0 22px;
  }
}
@media (min-width:769px){
  .mobile-search-pop{
    display:none !important;
  }
  .btn-primary.mobile-cta{
    display:none;
  }
}
@media (max-width:520px){
  .logo-word{
    font-size:16px;
  }
  .logo-mark{
    width:34px;
    height:34px;
  }
  .btn-primary.mobile-cta{
    padding:0 12px;
    font-size:12px;
  }
  .hero-desc{
    font-size:16px;
  }
  .hero-status-card{
    padding:22px;
  }
  .bento-card{
    padding:24px 22px;
  }
  .news-feature{
    min-height:360px;
    padding:22px;
  }
  .news-feature-content h3{
    font-size:19px;
  }
  .news-item{
    padding:16px 16px;
  }
  .news-item h3{
    font-size:16px;
  }
  .news-item-time{
    font-size:12px;
  }
  .faq-a{
    padding:0 18px 20px 18px;
  }
  .rule-item{
    padding:14px;
  }
  .countdown-bar{
    height:40px;
  }
  .cd-digit-group{
    gap:2px;
  }
  .cd-block{
    padding:1px 5px;
  }
  .cd-num{
    font-size:14px;
  }
  .cd-unit{
    font-size:10px;
  }
}

/* roulang page: category1 */
:root {
  --bg-void: rgba(6, 12, 24, 1);
  --bg-deep: rgba(4, 8, 18, 1);
  --panel-glass: rgba(14, 23, 40, 0.72);
  --panel-solid: rgba(10, 17, 30, 0.96);
  --blue: rgba(47, 123, 255, 1);
  --blue-bright: rgba(86, 150, 255, 1);
  --cyan: rgba(38, 211, 242, 1);
  --violet: rgba(124, 95, 255, 1);
  --success: rgba(46, 214, 168, 1);
  --warning: rgba(246, 185, 60, 1);
  --danger: rgba(255, 94, 126, 1);
  --text-main: rgba(238, 243, 251, 1);
  --text-sub: rgba(171, 182, 206, 1);
  --text-faint: rgba(122, 135, 164, 1);
  --border-weak: rgba(255, 255, 255, 0.08);
  --border-mid: rgba(255, 255, 255, 0.14);
  --border-strong: rgba(140, 180, 255, 0.45);
  --radius-glass: 22px;
  --radius-card: 18px;
  --radius-input: 12px;
  --radius-tag: 999px;
  --shadow-deep: 0 20px 60px rgba(2, 6, 18, 0.45);
  --shadow-glow-blue: 0 0 0 1px rgba(120, 160, 255, 0.3), 0 8px 30px rgba(47, 123, 255, 0.4);
  --shadow-glow-cyan: 0 0 0 1px rgba(38, 211, 242, 0.2), 0 6px 26px rgba(38, 211, 242, 0.24);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --section-gap: 96px;
  --container-w: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-void);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(1000px 520px at 88% -10%, rgba(124, 95, 255, 0.1), transparent 62%), radial-gradient(900px 500px at -10% 24%, rgba(47, 123, 255, 0.1), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

a {
  color: rgba(170, 190, 240, 1);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--blue-bright);
}

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

ul, ol {
  list-style-position: inside;
}

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

input {
  font-family: inherit;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 1;
}

.section {
  padding: var(--section-gap) 0;
}

.section-text {
  max-width: 680px;
  margin-bottom: 40px;
}

.section-head {
  margin-bottom: 48px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 18px;
}

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

h1, h2, h3, h4 {
  color: var(--text-main);
  line-height: 1.25;
  font-weight: 800;
}

h1 {
  font-size: clamp(32px, 6vw, 64px);
  line-height: 1.12;
  letter-spacing: 0.01em;
}

h2 {
  font-size: clamp(26px, 3vw, 42px);
  font-weight: 750;
  letter-spacing: 0.02em;
  line-height: 1.22;
}

h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
}

p {
  color: var(--text-sub);
  margin-top: 12px;
  margin-bottom: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 28px;
  white-space: nowrap;
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.btn i {
  font-size: 13px;
}

.btn-primary {
  background: linear-gradient(135deg, rgba(47, 123, 255, 1), rgba(28, 76, 180, 1));
  color: #fff;
  border: 1px solid rgba(150, 190, 255, 0.25);
  box-shadow: var(--shadow-glow-blue);
  min-width: 130px;
}

.btn-primary:hover {
  background: linear-gradient(135deg, rgba(63, 138, 255, 1), rgba(32, 88, 200, 1));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(120, 160, 255, 0.42), 0 12px 34px rgba(47, 123, 255, 0.45);
}

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

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-mid);
  color: var(--text-main);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  border-color: var(--border-strong);
  color: #fff;
  box-shadow: 0 4px 24px rgba(38, 211, 242, 0.12);
  transform: translateY(-1px);
}

.btn-ghost:active {
  transform: translateY(0);
}

.btn-sm {
  min-height: 36px;
  padding: 9px 18px;
  font-size: 14px;
}

.btn-lg {
  min-height: 52px;
  padding: 16px 38px;
  font-size: 17px;
}

/* header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 76px;
  z-index: 100;
  background: rgba(4, 8, 18, 0.78);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.site-header.scrolled {
  background: rgba(4, 8, 18, 0.92);
  border-bottom-color: var(--border-mid);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 22px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  font-size: 19px;
  font-weight: 800;
  white-space: nowrap;
  transition: opacity .2s;
}

.logo:hover {
  color: var(--text-main);
  opacity: 0.9;
}

.logo-mark {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-mark svg {
  display: block;
  width: 38px;
  height: 38px;
}

.logo-word {
  letter-spacing: 0.02em;
  color: #f0f4ff;
}

.logo-word span {
  color: var(--cyan);
}

.nav-main {
  display: flex;
  gap: 10px;
  align-items: center;
}

.nav-link {
  position: relative;
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 8px;
  margin: 0 4px;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(38, 211, 242, 0.7);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.22s ease;
}

.nav-link:hover {
  color: var(--text-main);
}

.nav-link:hover::after {
  transform: scaleX(0.6);
}

.nav-link.active {
  color: #fff;
}

.nav-link.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-login,
.header-primary {
  display: inline-flex;
}

.header-primary {
  padding: 10px 20px;
  font-size: 15px;
  min-height: 40px;
  min-width: auto;
}

.header-login {
  background: transparent;
  border-color: transparent;
  padding: 9px 16px;
  color: rgba(200, 210, 225, 1);
  font-size: 14px;
}

.header-login:hover {
  background: rgba(47, 123, 255, 0.08);
  color: #fff;
  border-color: rgba(47, 123, 255, 0.3);
}

.search-box {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  border: 1px solid var(--border-weak);
  padding: 0 14px;
  height: 40px;
  width: 200px;
  transition: width 0.25s ease, border 0.25s;
}

.search-box:focus-within {
  border-color: rgba(47, 123, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(47, 123, 255, 0.15);
  width: 250px;
}

.search-box svg,
.search-toggle svg {
  width: 15px;
  height: 15px;
  color: var(--text-faint);
  flex-shrink: 0;
  margin-right: 8px;
}

.search-box input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
  width: 100%;
  height: 100%;
}

.search-box input::placeholder {
  color: var(--text-faint);
}

.mobile-search-pop {
  display: none;
  background: rgba(4, 8, 18, 0.97);
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-mid);
}

.mobile-search-pop form {
  width: 100%;
}

.mobile-search-pop input {
  width: 100%;
  border: 1px solid var(--border-mid);
  background: var(--panel-solid);
  border-radius: 999px;
  padding: 12px 18px;
  color: var(--text-main);
  outline: none;
}

.mobile-search-pop input:focus {
  border-color: var(--blue);
}

.mobile-menu {
  position: fixed;
  top: 76px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(4, 8, 18, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 99;
  padding: 40px 24px 32px;
  display: none;
  flex-direction: column;
  gap: 18px;
  border-bottom: 1px solid var(--border-mid);
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu .nav-link {
  color: rgba(200, 215, 235, 0.85);
  font-size: 21px;
  padding: 16px 8px;
}

.mobile-menu .nav-link::after {
  display: none;
}

.mobile-menu .btn {
  margin-top: 16px;
  justify-content: center;
}

.desktop-search {
  display: flex;
}

.search-toggle {
  display: none;
}

.menu-toggle,
.search-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-weak);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-sub);
}

.menu-toggle:hover,
.search-toggle:hover {
  color: #fff;
  border-color: var(--border-mid);
}

/* hero */
.hero {
  position: relative;
  margin-top: 76px;
  padding: 128px 0 120px;
  overflow: hidden;
  background: transparent;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(120deg, rgba(4, 8, 18, 0.92) 0%, rgba(5, 10, 20, 0.65) 100%, rgba(5, 10, 20, 0.8) 100%), url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: 70% center;
  background-repeat: no-repeat;
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(800px 300px at 70% 80%, rgba(47, 123, 255, 0.15), transparent 60%);
  z-index: 0;
}

.hero-inner {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero h1 {
  color: #ffffff;
  font-size: clamp(36px, 6vw, 58px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: 0.03em;
  text-shadow: 0 0 60px rgba(47, 123, 255, 0.4);
  margin-bottom: 18px;
}

.hero h1 em {
  font-style: normal;
  color: var(--cyan);
}

.hero-desc {
  max-width: 720px;
  margin: 0 auto 36px;
  font-size: 17px;
  color: rgba(205, 218, 238, 0.92);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-actions .btn-primary {
  font-size: 17px;
  padding: 16px 40px;
}

.hero-actions .btn-ghost {
  background: rgba(8, 16, 28, 0.5);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.hero-breadcrumb {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-faint);
  font-size: 14px;
  margin-bottom: 20px;
}

.hero-breadcrumb a {
  color: var(--text-sub);
}

.hero-breadcrumb a:hover {
  color: #fff;
}

.hero-breadcrumb span {
  color: var(--border-strong);
}

/* FAQ page layout */
.faq-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 42px;
  align-items: start;
}

.toc-card {
  position: sticky;
  top: 110px;
  background: var(--panel-glass);
  border: 1px solid var(--border-weak);
  border-radius: var(--radius-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  padding: 28px 24px;
  box-shadow: var(--shadow-deep);
  box-sizing: border-box;
}

.toc-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-weak);
  margin-bottom: 16px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.toc-list li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: 12px;
  color: var(--text-sub);
  font-size: 14px;
  transition: background .2s, color .2s;
  border: 1px solid transparent;
}

.toc-list li a i {
  width: 20px;
  text-align: center;
  color: var(--text-faint);
  font-size: 13px;
  transition: color .2s;
}

.toc-list li a:hover {
  background: rgba(47, 123, 255, 0.08);
  color: #fff;
}

.toc-list li a:hover i {
  color: var(--cyan);
}

.toc-list li.active a {
  background: rgba(47, 123, 255, 0.1);
  border-color: rgba(47, 123, 255, 0.2);
  color: #fff;
}

.toc-list li.active a i {
  color: var(--cyan);
}

.toc-contact {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border-weak);
  font-size: 13px;
  color: var(--text-faint);
  line-height: 1.6;
}

.faq-main {
  display: flex;
  flex-direction: column;
  gap: 42px;
}

.faq-panel {
  background: var(--panel-glass);
  border: 1px solid var(--border-weak);
  border-radius: var(--radius-glass);
  padding: 36px 34px;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  box-shadow: var(--shadow-deep);
}

.faq-panel-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 22px;
  font-weight: 750;
  color: var(--text-main);
  margin-bottom: 8px;
}

.faq-panel-title .icon-wrap {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: rgba(47, 123, 255, 0.12);
  border: 1px solid rgba(47, 123, 255, 0.2);
  color: var(--blue-bright);
}

.faq-panel-desc {
  color: var(--text-faint);
  font-size: 14px;
  margin-bottom: 24px;
  line-height: 1.8;
}

.faq-item {
  border: 1px solid var(--border-weak);
  border-radius: var(--radius-card);
  background: rgba(7, 14, 24, 0.5);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s;
}

.faq-item.active {
  border-color: rgba(47, 123, 255, 0.3);
  box-shadow: 0 0 0 1px rgba(47, 123, 255, 0.1);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 22px;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
}

.faq-q:hover {
  color: #fff;
}

.faq-q .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 9px;
  border: 1px solid var(--border-mid);
  background: rgba(47, 123, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--cyan);
  font-size: 13px;
  transition: background .25s, transform .25s, color .25s, border-color .25s;
}

.faq-item.active .faq-icon {
  background: rgba(47, 123, 255, 0.16);
  border-color: var(--blue);
  color: #fff;
  transform: rotate(90deg);
}

.faq-q .faq-caret {
  margin-left: auto;
  color: var(--text-faint);
  font-size: 15px;
  transition: transform .25s;
  flex-shrink: 0;
}

.faq-item.active .faq-caret {
  transform: rotate(180deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s ease;
}

.faq-a-inner {
  padding: 0 24px 20px 62px;
}

.faq-a p {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 10px;
}

.faq-a ul {
  margin: 8px 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.faq-a ul li {
  color: var(--text-sub);
  font-size: 14px;
  padding-left: 16px;
  position: relative;
  line-height: 1.7;
}

.faq-a ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 5px;
  height: 5px;
  border-radius: 2px;
  background: var(--cyan);
}

.faq-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
}

.faq-tag-list li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-sub);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-weak);
  padding: 6px 14px;
  border-radius: var(--radius-tag);
}

.faq-tag-list li i {
  color: var(--cyan);
  font-size: 12px;
}

.note-box {
  background: rgba(38, 211, 242, 0.06);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-input) var(--radius-input) 0;
  padding: 16px 20px;
  margin: 18px 0 8px;
}

.note-box p {
  margin: 0;
  font-size: 14px;
  color: #acdef5;
  line-height: 1.7;
}

.warn-box {
  background: rgba(246, 185, 60, 0.06);
  border-left: 3px solid var(--warning);
  border-radius: 0 var(--radius-input) var(--radius-input) 0;
  padding: 16px 20px;
  margin: 18px 0 8px;
}

.warn-box p {
  margin: 0;
  font-size: 14px;
  color: #ecd59c;
  line-height: 1.7;
}

/* quick help on top */
.help-assets {
  background: rgba(14, 23, 40, 0.72);
  border: 1px solid var(--border-weak);
  border-radius: var(--radius-glass);
  padding: 30px 32px;
  margin-top: 60px;
  margin-bottom: 96px;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-deep);
}

.help-assets-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
}

.help-assets-head .btn {
  min-width: auto;
}

.assist-feat {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  border-top: 1px solid var(--border-weak);
  padding-top: 22px;
  margin-top: 8px;
}

.assist-cell {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.assist-cell .icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(47, 123, 255, 0.12);
  color: var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

.assist-cell h4 {
  font-size: 16px;
  color: #dbe5f5;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.4;
}

.assist-cell p {
  color: var(--text-faint);
  font-size: 13px;
  margin: 0;
  line-height: 1.6;
}

/* CTA band */
.cta-band {
  background: linear-gradient(135deg, rgba(47, 123, 255, 0.12) 0%, rgba(38, 211, 242, 0.05) 46%, rgba(47, 123, 255, 0.08) 100%);
  border: 1px solid rgba(120, 160, 255, 0.25);
  border-radius: var(--radius-glass);
  padding: 64px 56px;
  position: relative;
  overflow: hidden;
  margin: 0 0 var(--section-gap);
  text-align: center;
}

.cta-band::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 95, 255, 0.18), transparent 60%);
  pointer-events: none;
}

.cta-band h2 {
  font-size: clamp(26px, 3vw, 38px);
  margin-bottom: 14px;
}

.cta-band p {
  max-width: 680px;
  margin: 0 auto 28px;
  font-size: 16px;
  color: var(--text-sub);
}

.cta-band .btn-ghost {
  background: rgba(255, 255, 255, 0.1);
}

/* footer */
.site-footer {
  background: #04080f;
  border-top: 1px solid var(--border-weak);
  padding: 80px 0 0;
  margin-top: 60px;
  position: relative;
  z-index: 1;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1.2fr 1fr;
  gap: 48px;
  text-align: left;
}

.footer-brand .logo {
  font-size: 20px;
  margin-bottom: 18px;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-faint);
  line-height: 1.7;
  max-width: 260px;
  margin-top: 16px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #e7eef8;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-links a {
  color: var(--text-faint);
  font-size: 14px;
}

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

.footer-text {
  color: var(--text-faint);
  font-size: 13px;
  line-height: 1.75;
  margin-top: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: rgba(129, 144, 177, 0.6);
  font-size: 13px;
}

.footer-bottom span a {
  color: rgba(129, 144, 177, 0.6);
  font-size: 13px;
}

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

/* responsive */
@media (max-width: 1100px) {
  .desktop-search {
    display: none !important;
  }
  .search-toggle {
    display: inline-flex;
  }
  .nav-main {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .mobile-search-pop.active {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 1024px) {
  :root {
    --section-gap: 72px;
  }
  .faq-layout {
    grid-template-columns: 1fr;
  }
  .toc-card {
    position: static;
    top: auto;
  }
  .toc-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }
  .toc-list li {
    width: calc(50% - 4px);
  }
  .toc-contact {
    text-align: center;
    border-top: none;
    padding-top: 0;
  }
  .assist-feat {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 56px;
  }
  body {
    font-size: 15px;
  }
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  h1 {
    font-size: 34px;
    line-height: 1.24;
  }
  .header-inner {
    height: 64px;
  }
  .site-header {
    height: 64px;
  }
  .mobile-menu {
    top: 64px;
  }
  .hero {
    margin-top: 64px;
    padding: 76px 0 60px;
  }
  .hero-desc {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  .hero-actions .btn {
    width: 100%;
    max-width: 300px;
  }
  .faq-panel {
    padding: 24px 18px;
    border-radius: 18px;
  }
  .faq-a-inner {
    padding: 0 16px 18px 16px;
  }
  .faq-q {
    padding: 16px 12px;
    align-items: flex-start;
    font-size: 15px;
  }
  .faq-q .faq-caret {
    margin-left: auto;
    margin-top: 2px;
  }
  .faq-q .faq-icon {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
  }
  .help-assets {
    padding: 20px 16px;
    margin-top: 44px;
    margin-bottom: 68px;
  }
  .assist-feat {
    grid-template-columns: 1fr;
  }
  .cta-band {
    padding: 42px 22px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .assist-feat {
    grid-template-columns: 1fr;
  }
  .toc-list li {
    width: 100%;
  }
  .hero-actions .btn {
    max-width: none;
  }
  .footer-grid {
    gap: 32px;
  }
  .header-login {
    display: none;
  }
  .header-primary {
    display: none !important;
  }
  .mobile-cta {
    display: inline-flex;
  }
  .site-header .container {
    gap: 8px;
  }
  .logo-word {
    font-size: 17px;
  }
  .faq-tag-list li {
    font-size: 12px;
  }
}

@media (min-width: 521px) {
  .mobile-cta {
    display: none !important;
  }
}

/* roulang page: article */
:root {
  --bg-deep: rgba(6,12,24,1);
  --bg-night: rgba(4,8,18,1);
  --bg-card: rgba(14,23,40,0.92);
  --bg-panel: rgba(14,23,40,0.72);
  --bg-soft: rgba(13,22,42,0.84);
  --accent-blue: #2f7bff;
  --accent-cyan: #26d3f2;
  --accent-violet: #7c5fff;
  --success: #2ed6a8;
  --warning: #f6b93c;
  --danger: #ff5e7e;
  --text-main: #eef3fb;
  --text-sub: #abb6ce;
  --text-muted: #7a87a4;
  --text-read: #d7e2f2;
  --border-weak: rgba(255,255,255,0.08);
  --border-mid: rgba(255,255,255,0.14);
  --border-strong: rgba(140,180,255,0.42);
  --font: "PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --radius-card: 22px;
  --radius-box: 16px;
  --radius-tag: 999px;
  --shadow-card: 0 20px 60px rgba(2,6,18,0.5);
  --shadow-blue: 0 0 0 1px rgba(120,160,255,0.28),0 8px 30px rgba(47,123,255,0.4);
  --container: 1200px;
  --space-section: 96px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(700px 320px at 85% -2%, rgba(124,95,255,0.14), transparent 68%),
    radial-gradient(600px 340px at 0% 12%, rgba(47,123,255,0.1), transparent 62%);
  z-index: -1;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4, p { margin: 0; }
.container {
  width: min(100% - 48px, var(--container));
  margin: 0 auto;
}
.container-narrow {
  width: min(100% - 48px, 980px);
  margin: 0 auto;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: background .2s ease, box-shadow .2s ease, border-color .2s ease, transform .2s ease, color .2s ease;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), #1761e8);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(120,160,255,0.24), 0 8px 28px rgba(47,123,255,0.36);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(120,160,255,0.34), 0 10px 34px rgba(47,123,255,0.46);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 16px rgba(47,123,255,0.35);
}
.btn-ghost {
  background: rgba(255,255,255,0.045);
  border-color: var(--border-mid);
  color: var(--text-sub);
}
.btn-ghost:hover {
  color: var(--text-main);
  border-color: rgba(140,180,255,0.55);
  background: rgba(255,255,255,0.08);
}
.btn-primary:focus-visible, .btn-ghost:focus-visible, .nav-link:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
}
.tag-badge {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 12px;
  border-radius: var(--radius-tag);
  background: rgba(47,123,255,0.15);
  border: 1px solid rgba(47,123,255,0.3);
  color: #b8d3ff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .02em;
}
.category-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: var(--radius-tag);
  background: rgba(38,211,242,0.1);
  border: 1px solid rgba(38,211,242,0.32);
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .03em;
}
.category-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(38,211,242,0.8);
}
/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  height: 72px;
  background: rgba(6,12,24,0.78);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, height .3s ease;
}
.site-header.is-scrolled {
  background: rgba(5,9,18,0.92);
  border-bottom-color: var(--border-mid);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 72px;
  transition: height .3s ease;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(47,123,255,0.1);
  border: 1px solid rgba(47,123,255,0.24);
  box-shadow: 0 0 18px rgba(47,123,255,0.12);
}
.logo-mark svg {
  width: 30px;
  height: 30px;
}
.logo-word {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: .01em;
  color: #f4fbff;
  white-space: nowrap;
}
.logo-word span {
  color: var(--accent-cyan);
}
.nav-main {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 14px;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 16px;
  border-radius: 10px;
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 500;
  transition: color .2s ease, background .2s ease;
}
.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.05);
}
.nav-link.active {
  color: #fff;
  font-weight: 700;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  transform: translateX(-50%);
  background: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(38,211,242,0.8);
}
.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-left: auto;
}
.search-box {
  display: inline-flex;
  align-items: center;
  width: 220px;
  height: 38px;
  padding: 0 6px 0 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-weak);
  border-radius: 999px;
  transition: border-color .2s ease, box-shadow .2s ease, width .2s ease;
}
.search-box:focus-within {
  border-color: rgba(140,180,255,0.55);
  box-shadow: 0 0 0 3px rgba(47,123,255,0.12);
  background: rgba(255,255,255,0.09);
}
.search-box svg {
  width: 15px;
  height: 15px;
  color: var(--text-muted);
  flex-shrink: 0;
}
.search-box input {
  width: 100%;
  height: 100%;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--text-main);
  font-size: 14px;
  padding: 0 10px;
}
.search-box input::placeholder {
  color: var(--text-muted);
}
.mobile-cta {
  display: none;
  height: 34px;
  padding: 0 14px;
}
.search-toggle, .menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-weak);
  color: var(--text-main);
  transition: background .2s ease, border-color .2s ease;
}
.search-toggle:hover, .menu-toggle:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--border-mid);
}
.mobile-panel {
  position: fixed;
  top: 68px;
  right: 16px;
  width: min(320px, calc(100% - 32px));
  padding: 18px;
  background: rgba(8,14,26,0.96);
  border: 1px solid var(--border-mid);
  border-radius: 18px;
  box-shadow: 0 24px 70px rgba(0,0,0,0.55);
  transform: translateY(-14px);
  opacity: 0;
  visibility: hidden;
  transition: transform .25s ease, opacity .25s ease, visibility .25s ease;
  z-index: 65;
}
.mobile-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mobile-search-inner {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border-weak);
}
.mobile-search-inner svg {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}
.mobile-search-inner input {
  flex: 1;
  width: 100%;
  height: 100%;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--text-main);
  padding: 0 10px;
  font-size: 15px;
}
.mobile-nav-layout {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 16px 0 20px;
}
.mobile-nav-layout a {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 14px;
  border-radius: 12px;
  color: var(--text-sub);
  font-size: 16px;
  font-weight: 600;
  transition: background .2s ease, color .2s ease;
}
.mobile-nav-layout a:hover, .mobile-nav-layout a.active {
  background: rgba(47,123,255,0.12);
  color: #fff;
}
.mobile-panel-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.mobile-panel-actions .btn {
  width: 100%;
}
/* article main layout */
.article-heading {
  padding: 56px 0 16px;
  position: relative;
}
.heading-content {
  max-width: 920px;
  margin: 0 auto;
  position: relative;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 30px;
}
.breadcrumb a {
  color: var(--text-sub);
  transition: color .2s ease;
}
.breadcrumb a:hover {
  color: var(--accent-cyan);
}
.breadcrumb .sep {
  color: var(--text-muted);
  opacity: .6;
}
.breadcrumb .current {
  color: var(--text-muted);
  max-width: 420px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.article-title {
  font-size: clamp(30px, 4.6vw, 50px);
  line-height: 1.2;
  font-weight: 800;
  color: #f0f6ff;
  margin: 14px 0 18px;
  letter-spacing: -0.01em;
}
.article-summary {
  color: var(--text-sub);
  font-size: 16px;
  line-height: 1.85;
  max-width: 760px;
  margin-bottom: 26px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  color: var(--text-muted);
  font-size: 14px;
}
.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.meta-pill svg {
  width: 15px;
  height: 15px;
  opacity: .8;
}
.meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(171,182,206,0.6);
}
.article-body-section {
  padding: 32px 0 72px;
}
.article-card {
  max-width: 920px;
  margin: 0 auto;
  background: rgba(7,13,24,0.92);
  border: 1px solid var(--border-weak);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.article-cover {
  position: relative;
  height: 340px;
  overflow: hidden;
  background: #0a1220;
}
.article-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5,10,20,0) 30%, rgba(5,10,20,0.72) 100%);
}
.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.article-content {
  padding: 48px clamp(24px, 7.5vw, 68px) 52px;
}
.article-content p {
  color: var(--text-read);
  font-size: 16.5px;
  line-height: 1.9;
  margin: 0 0 20px;
}
.article-content h2 {
  font-size: clamp(21px, 2.8vw, 28px);
  line-height: 1.45;
  font-weight: 800;
  color: #f1f6ff;
  margin: 42px 0 18px;
  padding-top: 8px;
  letter-spacing: -0.01em;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 750;
  color: #e6eefc;
  margin: 34px 0 14px;
}
.article-content ul, .article-content ol {
  margin: 6px 0 22px;
  padding-left: 1.35em;
  color: var(--text-read);
  line-height: 1.9;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content blockquote {
  margin: 22px 0;
  padding: 18px 22px;
  background: rgba(47,123,255,0.1);
  border-left: 4px solid var(--accent-blue);
  border-radius: 0 14px 14px 0;
  color: var(--text-sub);
}
.article-content img {
  border-radius: 16px;
  margin: 24px 0;
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}
.article-content a {
  color: #a9c7ff;
  border-bottom: 1px solid rgba(169,199,255,0.4);
  transition: color .2s ease, border-color .2s ease;
}
.article-content a:hover {
  color: #d5e3ff;
  border-color: currentColor;
}
.article-bottom-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--border-weak);
}
.back-home {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 600;
  transition: color .2s ease;
}
.back-home:hover {
  color: var(--accent-cyan);
}
.back-home svg {
  width: 16px;
  height: 16px;
}
.not-found-card {
  max-width: 680px;
  margin: 60px auto;
  padding: 56px 40px;
  background: rgba(7,13,24,0.9);
  border: 1px solid var(--border-weak);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  text-align: center;
}
.not-found-icon {
  width: 76px;
  height: 76px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-mid);
  color: var(--text-muted);
}
.not-found-card h2 {
  font-size: 24px;
  font-weight: 800;
  color: #eef3fb;
}
.not-found-card p {
  color: var(--text-muted);
  max-width: 400px;
  margin: 12px auto 28px;
}
/* related section */
.related-section {
  padding: 24px 0 40px;
}
.related-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 30px;
}
.related-head h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  color: #eaf1fc;
}
.related-head .sub-link {
  color: var(--text-muted);
  font-size: 14px;
  transition: color .2s;
}
.related-head .sub-link:hover {
  color: var(--accent-cyan);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.related-card {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 18px;
  padding: 14px;
  background: rgba(14,23,40,0.7);
  border: 1px solid var(--border-weak);
  border-radius: 18px;
  overflow: hidden;
  transition: border-color .2s ease, transform .25s ease, background .2s ease;
}
.related-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  background: rgba(18,29,52,0.82);
}
.related-media {
  display: block;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.related-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.related-card:hover .related-media img {
  transform: scale(1.04);
}
.related-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-right: 4px;
}
.related-body h3 {
  font-size: 17px;
  line-height: 1.6;
  font-weight: 700;
  color: #edf3fc;
  margin: 6px 0 8px;
}
.related-body h3 a:hover {
  color: var(--accent-cyan);
}
.related-body p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 10px;
}
.related-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: #9bc1ff;
  transition: color .2s ease;
}
.related-more:hover {
  color: var(--accent-cyan);
}
.related-more svg {
  width: 13px;
  height: 13px;
}
/* closing cta */
.cta-section {
  padding: 20px 0 80px;
}
.end-cta {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: 42px 48px;
  background: rgba(20,33,58,0.62);
  border: 1px solid rgba(47,123,255,0.32);
  border-radius: 24px;
  box-shadow: 0 0 0 1px rgba(38,211,242,0.08), 0 24px 80px rgba(2,6,18,0.6);
  background-image: radial-gradient(circle at 0% 100%, rgba(47,123,255,0.16), transparent 45%);
  backdrop-filter: blur(12px);
}
.end-cta-info h2 {
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 800;
  line-height: 1.4;
  color: #eef4ff;
  margin: 12px 0 10px;
}
.end-cta-info p {
  color: var(--text-muted);
  max-width: 520px;
}
.end-cta-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  flex-shrink: 0;
}
/* footer */
.site-footer {
  background: var(--bg-night);
  border-top: 1px solid var(--border-weak);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr 1.2fr;
  gap: 42px;
}
.footer-grid .logo {
  margin-bottom: 16px;
}
.footer-grid .logo-mark {
  width: 34px;
  height: 34px;
}
.footer-grid .logo-mark svg {
  width: 26px;
  height: 26px;
}
.footer-grid .logo-word {
  font-size: 18px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  margin-top: 8px;
}
.footer-title {
  color: #dfe6f2;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: .02em;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}
.footer-links a {
  position: relative;
  color: var(--text-muted);
  font-size: 14px;
  transition: color .2s ease, padding-left .2s ease;
}
.footer-links a:hover {
  color: #b6d4ff;
  padding-left: 4px;
}
.footer-text {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border-weak);
  color: var(--text-muted);
  font-size: 13px;
}
.footer-bottom a {
  color: var(--text-muted);
  transition: color .2s;
}
.footer-bottom a:hover {
  color: var(--accent-cyan);
}
/* responsive */
@media (max-width: 1100px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 1024px) {
  .header-inner, .site-header {
    height: 60px;
  }
  .nav-main, .desktop-search, .header-login, .header-primary {
    display: none;
  }
  .search-toggle, .menu-toggle, .mobile-cta {
    display: inline-flex;
  }
  .header-inner {
    gap: 8px;
  }
  .logo-word {
    font-size: 18px;
  }
  .logo-mark {
    width: 36px;
    height: 36px;
  }
  .article-heading {
    padding-top: 42px;
  }
  .article-card {
    border-radius: 20px;
  }
  .article-cover {
    height: 300px;
  }
}
@media (max-width: 768px) {
  .container {
    width: min(100% - 32px, 100%);
  }
  .container-narrow {
    width: calc(100% - 32px);
  }
  :root {
    --space-section: 64px;
  }
  .article-heading {
    padding-top: 28px;
  }
  .breadcrumb {
    font-size: 13px;
    margin-bottom: 20px;
  }
  .article-title {
    font-size: 28px;
    line-height: 1.32;
    margin: 12px 0 14px;
  }
  .article-meta {
    font-size: 13px;
    gap: 8px 12px;
  }
  .article-cover {
    height: 220px;
  }
  .article-content {
    padding: 28px 20px 34px;
  }
  .article-content p {
    font-size: 15.5px;
    line-height: 1.9;
  }
  .article-content h2 {
    margin: 32px 0 14px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .related-card {
    grid-template-columns: 120px minmax(0, 1fr);
  }
  .end-cta {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 22px;
  }
  .end-cta-actions {
    width: 100%;
  }
  .end-cta-actions .btn {
    flex: 1;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .header-actions {
    gap: 6px;
  }
  .logo {
    gap: 6px;
  }
  .logo-word {
    font-size: 16px;
  }
  .logo-mark {
    width: 28px;
    height: 28px;
    border-radius: 9px;
  }
  .logo-mark svg {
    width: 22px;
    height: 22px;
  }
  .menu-toggle, .search-toggle {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }
  .mobile-cta {
    height: 32px;
    padding: 0 12px;
    font-size: 13px;
  }
  .related-card {
    grid-template-columns: 1fr;
  }
  .related-media {
    width: 100%;
    aspect-ratio: 16 / 8;
  }
  .related-body {
    padding-right: 0;
  }
  .article-bottom-line {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

/* roulang page: category2 */
:root{
  --bg-deep:#040812;
  --bg-solid:#060c18;
  --bg-panel:rgba(14,23,40,.78);
  --bg-panel-solid:#0d1624;
  --primary:#2f7bff;
  --cyan:#26d3f2;
  --violet:#7c5fff;
  --success:#2ed6a8;
  --warning:#f6b93c;
  --danger:#ff5e7e;
  --text-main:#eef3fb;
  --text-sub:#abb6ce;
  --text-dim:#7a87a4;
  --line-weak:rgba(255,255,255,.08);
  --line-mid:rgba(255,255,255,.14);
  --line-blue:rgba(140,180,255,.34);
  --shadow-card:0 20px 60px rgba(2,6,18,.45);
  --shadow-btn:0 0 0 1px rgba(120,160,255,.28),0 8px 30px rgba(47,123,255,.38);
  --radius-panel:22px;
  --radius-card:18px;
  --radius-control:12px;
  --radius-btn:999px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Helvetica Neue",sans-serif;
  --section-space:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-solid);
  background-image:radial-gradient(circle at 8% 4%,rgba(124,95,255,.12),transparent 26%),radial-gradient(circle at 82% 12%,rgba(47,123,255,.13),transparent 28%);
  color:var(--text-main);
  font-family:var(--font);
  line-height:1.85;
  padding-top:72px;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
svg{display:block}
button,input{font-family:inherit;font-size:inherit}
input:focus-visible,button:focus-visible,a:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4,p,ul{margin:0}
ul{list-style:none;padding:0}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-weight:700;transition:all .24s ease;
  cursor:pointer;border:1px solid transparent;
  min-height:42px;padding:0 22px;font-size:15px;line-height:1;
  white-space:nowrap;user-select:none;
}
.btn-primary{
  background:linear-gradient(135deg,#2f7bff,#2160d6);
  color:#fff;border-color:rgba(120,160,255,.4);
  box-shadow:var(--shadow-btn);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
  background:rgba(255,255,255,.04);border-color:var(--line-mid);
  color:var(--text-sub);backdrop-filter:blur(8px);
}
.btn-ghost:hover{color:#fff;border-color:rgba(140,180,255,.55);background:rgba(255,255,255,.08)}
.btn-ghost:active{transform:translateY(1px)}

.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:rgba(6,12,24,.82);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line-mid);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.scrolled{background:rgba(5,10,20,.94);box-shadow:0 18px 40px rgba(2,6,18,.35)}
.header-inner{
  height:72px;
  display:flex;align-items:center;gap:18px;
}
.logo{flex:0 0 auto;display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em;font-size:19px;color:#fff}
.logo-mark{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center}
.logo-mark svg{width:100%;height:100%}
.logo-word span{color:#91b6ff;font-weight:600}

.nav-main{display:flex;align-items:center;gap:4px;margin-left:10px}
.nav-link{
  position:relative;padding:25px 15px;font-size:15px;color:var(--text-sub);
  font-weight:600;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:15px;right:15px;bottom:17px;height:2px;
  border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--cyan));
  opacity:0;transform:scaleX(.4);transform-origin:center;
  transition:opacity .2s,transform .25s ease;box-shadow:0 0 14px rgba(38,211,242,.5);
}
.nav-link:hover{color:#fff}
.nav-link.active{color:#fff}
.nav-link.active::after,.nav-link:hover::after{opacity:1;transform:scaleX(1)}

.header-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px;margin-left:auto}
.search-box{
  width:222px;height:42px;display:flex;align-items:center;gap:8px;
  padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.055);border:1px solid var(--line-weak);
  color:var(--text-sub);transition:border .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box:focus-within{border-color:rgba(38,211,242,.55);box-shadow:0 0 0 4px rgba(38,211,242,.09);background:rgba(255,255,255,.08)}
.search-box svg{width:17px;height:17px;flex:0 0 auto}
.search-box input{width:100%;min-width:0;background:transparent;border:0;outline:0;color:#fff;font-size:14px}
.search-box input::placeholder{color:var(--text-dim)}
.header-actions .btn{flex:0 0 auto}
.header-login{height:40px;padding:0 18px;color:#b8c5e6;}
.mobile-cta{display:none}
.search-toggle,.menu-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line-weak);
  border-radius:999px;color:var(--text-sub);cursor:pointer;transition:border .2s,background .2s,color .2s;
}
.search-toggle:hover,.menu-toggle:hover{color:#fff;border-color:var(--line-blue)}

.mobile-search-pop{
  display:none;padding:6px 20px 16px;
  background:rgba(5,9,18,.96);border-bottom:1px solid var(--line-mid);
}
.mobile-search-pop.open{display:block}
.mobile-search-pop form{
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 16px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid var(--line-weak);
}
.mobile-search-pop input{
  width:100%;background:transparent;border:0;outline:0;color:#fff;
}
.mobile-menu-pop{
  display:none;position:fixed;top:72px;left:0;right:0;z-index:99;
  background:rgba(5,9,18,.98);border-bottom:1px solid var(--line-mid);
  padding:18px 20px 22px;
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.mobile-menu-pop.open{display:block}
.mobile-menu-pop a{display:block;padding:12px 8px;font-weight:600;border-radius:10px;color:var(--text-sub);font-size:16px}
.mobile-menu-pop a:hover,.mobile-menu-pop a.active{background:rgba(47,123,255,.12);color:#fff}
.mobile-bottom-actions{margin-top:14px;display:flex;flex-direction:column;gap:10px}

.cat-hero{
  position:relative;padding:72px 0 62px;overflow:hidden;
  border-bottom:1px solid var(--line-weak);
  background:linear-gradient(180deg,rgba(6,12,24,.4),rgba(6,12,24,.95));
}
.cat-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center 28%;
  opacity:.17;filter:blur(.2px);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(6,12,24,.2),rgba(6,12,24,.65));
  z-index:1;
}
.cat-hero-inner{position:relative;z-index:2;max-width:980px;margin:0 auto;padding:0 24px}
.cat-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:99px;
  background:rgba(47,123,255,.12);border:1px solid rgba(140,180,255,.25);
  color:#9dbdff;font-size:13px;font-weight:600;letter-spacing:.06em;
}
.cat-hero h1{
  font-size:clamp(32px,5.2vw,56px);
  line-height:1.18;font-weight:800;margin:22px 0 16px;letter-spacing:-.01em;
}
.cat-hero-sub{
  color:var(--text-sub);font-size:17px;max-width:720px;
  line-height:1.95;
}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-cta .btn{min-height:48px;padding:0 30px}

.faq-layout{
  display:grid;grid-template-columns:292px minmax(0,1fr);
  gap:32px;align-items:start;
  padding:88px 0 64px;
}
.faq-index{
  position:sticky;top:104px;border-radius:var(--radius-panel);
  background:rgba(12,21,37,.82);border:1px solid var(--line-weak);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
  padding:22px;
}
.faq-index-title{font-size:20px;font-weight:800;letter-spacing:.02em}
.faq-index-sub{font-size:14px;color:var(--text-dim);letter-spacing:.03em;margin:6px 0 18px}
.faq-index-list{display:grid;gap:10px}
.faq-index-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border:1px solid transparent;
  background:rgba(255,255,255,.035);border-radius:14px;
  color:var(--text-sub);line-height:1.4;font-weight:600;
  transition:all .22s ease;
}
.faq-index-list a:hover{
  background:rgba(47,123,255,.12);border-color:rgba(140,180,255,.3);
  color:#fff;transform:translateY(-2px);
}
.faq-index-list .idx-no{flex:0 0 auto;font-size:12px;color:var(--cyan);font-weight:700;font-variant-numeric:tabular-nums}
.faq-help-tip{
  margin-top:18px;padding:14px 16px;border-radius:16px;
  border:1px solid rgba(38,211,242,.2);background:rgba(38,211,242,.06);
  color:var(--text-sub);font-size:14px;line-height:1.75;
}
.faq-help-tip strong{color:var(--cyan);font-weight:700}

.faq-stack{display:grid;gap:26px;min-width:0}
.faq-section{
  border-radius:var(--radius-panel);
  background:rgba(14,23,40,.76);
  border:1px solid var(--line-weak);
  box-shadow:var(--shadow-card);
  padding:30px;
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.faq-section-head{display:flex;align-items:flex-start;gap:16px;border-bottom:1px solid var(--line-weak);padding-bottom:18px;margin-bottom:12px}
.faq-sec-ico{
  flex:0 0 auto;width:48px;height:48px;border-radius:16px;
  background:linear-gradient(145deg,rgba(47,123,255,.3),rgba(38,211,242,.14));
  border:1px solid rgba(140,180,255,.28);
  display:flex;align-items:center;justify-content:center;
  color:#bbd7ff;font-weight:800;font-size:18px;letter-spacing:.02em;
}
.faq-section-head h2{font-size:24px;line-height:1.35;font-weight:750}
.faq-section-head p{color:var(--text-dim);margin-top:4px;font-size:14px}

.faq-list{display:grid;gap:4px;padding-top:10px}
.faq-item{
  border-bottom:1px solid var(--line-weak);
  transition:background .2s;
}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;gap:14px;list-style:none;
  padding:17px 8px 17px 2px;cursor:pointer;border-radius:12px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover .q-title{color:#fff}
.q-badge{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:rgba(38,211,242,.12);border:1px solid rgba(38,211,242,.35);
  color:var(--cyan);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;
}
.q-title{
  flex:1;min-width:0;font-size:17px;font-weight:700;line-height:1.6;
  color:var(--text-main);transition:color .2s ease;
}
.q-toggle{
  flex:0 0 auto;width:26px;height:26px;position:relative;
  border:1px solid var(--line-mid);border-radius:50%;
  transition:transform .25s,border-color .2s;
}
.q-toggle::before{content:"";position:absolute;left:50%;top:50%;width:11px;height:1.6px;background:var(--text-sub);transform:translate(-50%,-50%);border-radius:4px}
.q-toggle::after{content:"";position:absolute;left:50%;top:50%;width:1.6px;height:11px;background:var(--text-sub);transform:translate(-50%,-50%);border-radius:4px;transition:transform .22s}
.faq-item summary:hover .q-toggle{border-color:var(--line-blue)}
.faq-item[open] .q-toggle{transform:rotate(180deg);border-color:rgba(38,211,242,.5)}
.faq-item[open] .q-toggle::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-answer{
  color:var(--text-sub);
  padding:0 8px 20px 40px;
}
.faq-answer p{
  line-height:1.9;font-size:15px;color:#c0c9dd;
}
.faq-answer a{color:#86aeff;text-decoration:underline;text-underline-offset:4px}

.contact-strip{
  border-radius:var(--radius-panel);
  border:1px solid rgba(38,211,242,.22);
  background:linear-gradient(160deg,rgba(47,123,255,.16),rgba(14,23,40,.62) 44%);
  padding:28px 30px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  margin-bottom:56px;
}
.contact-strip strong{font-size:21px;letter-spacing:.02em}
.contact-strip p{color:var(--text-sub);font-size:15px;margin-top:4px;max-width:640px}
.cta-nav{display:flex;gap:12px;flex-wrap:wrap}

.faq-more-panel{
  margin-bottom:96px;
  border-radius:26px;overflow:hidden;position:relative;
  border:1px solid rgba(140,180,255,.25);
  background:rgba(47,123,255,.08);
  backdrop-filter: blur(8px);
  box-shadow:0 30px 80px rgba(2,6,18,.45);
}
.faq-more-grid{display:grid;grid-template-columns:1fr 300px;}
.faq-more-body{padding:44px 46px;}
.faq-more-body h2{
  font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.35;
}
.faq-more-body > p{color:var(--text-sub);font-size:16px;max-width:540px;margin:14px 0 28px}
.faq-more-visual{position:relative;min-height:240px;background:#0a1524;}
.faq-more-visual img{width:100%;height:100%;object-fit:cover;object-position:center;}
.faq-more-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,23,40,.05),rgba(8,14,26,.48)),linear-gradient(0deg,rgba(8,14,26,.2),transparent 30%);
}

.newsletter-mini{display:none}

.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line-weak);
  padding-top:64px;
  position:relative;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,123,255,.5),rgba(38,211,242,.5),transparent);
}
.footer-top{padding-bottom:42px;border-bottom:1px solid var(--line-weak)}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--text-dim);line-height:1.85;max-width:300px}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px;color:#dfe6f4;letter-spacing:.02em}
.footer-links{display:grid;gap:10px}
.footer-links a{color:var(--text-dim);transition:all .18s ease;font-size:14px;line-height:1.6}
.footer-links a:hover{color:#d1e1ff;transform:translateX(3px);text-shadow:0 0 12px rgba(47,123,255,.2)}
.footer-text{font-size:14px;color:var(--text-dim);line-height:1.8}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:24px 0 28px;
  color:var(--text-dim);font-size:13px;flex-wrap:wrap;
}
.footer-bottom a{color:var(--text-sub);transition:color .2s}
.footer-bottom a:hover{color:#fff}
.footer-bottom span{line-height:1.8}

@media(max-width:1200px){
  .faq-layout{grid-template-columns:260px minmax(0,1fr);gap:24px}
}
@media(max-width:1024px){
  .nav-main{display:none}
  .desktop-search{display:none}
  .search-toggle{display:inline-flex}
  .header-login{display:none}
  .menu-toggle{display:inline-flex}
  .header-primary{display:none}
  .mobile-cta{display:inline-flex}
  .faq-layout{grid-template-columns:1fr;padding-top:60px}
  .faq-index{position:static;top:auto;}
  .faq-index-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr;}
  .faq-more-grid{grid-template-columns:1fr;}
  .faq-more-visual{display:none}
}
@media(max-width:768px){
  body{padding-top:60px}
  .site-header{height:60px}
  .header-inner{height:60px;gap:10px}
  .logo-word{font-size:17px}
  .logo-mark{width:36px;height:36px}
  .mobile-menu-pop{top:60px}
  .container{padding-left:20px;padding-right:20px}
  .cat-hero{padding:52px 0 48px}
  .cat-hero-inner{padding:0 20px}
  .cat-eyebrow{font-size:12px}
  .cat-hero h1{font-size:36px;margin-top:18px}
  .cat-hero-sub{font-size:15px}
  .section-space{padding:72px 0}
  .faq-layout{padding:52px 0 40px}
  .contact-strip{margin-bottom:40px}
  .faq-more-panel{margin-bottom:72px}
  .faq-more-body{padding:28px 22px}
  .faq-section{padding:22px 18px}
  .faq-section-head h2{font-size:21px;line-height:1.4}
  .faq-answer{padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .faq-index-list{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;text-align:center;}
}
@media(max-width:560px){
  .btn{padding:0 16px;font-size:14px}
  .logo-word span{display:none}
  .logo-word{font-size:16px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .hero-cta .btn{width:100%}
  .faq-index-list{grid-template-columns:1fr}
  .faq-section-head{gap:12px}
  .q-title{font-size:15px;line-height:1.7}
  .q-badge{width:24px;height:24px;flex-basis:24px;font-size:12px}
}