/* roulang page: index */
:root{
  --bg:#071A2B;
  --bg-2:#0A1B2E;
  --card:#0C1E30;
  --navy:#0E2A47;
  --cyan:#2EE6D6;
  --amber:#FFB454;
  --text:#E8F1F8;
  --muted:#9FB3C8;
  --dim:#6F879C;
  --border:rgba(255,255,255,.10);
  --border-strong:rgba(46,230,214,.32);
  --r-lg:18px;
  --r-sm:14px;
  --r-btn:12px;
  --shadow:0 20px 50px rgba(0,0,0,.35);
  --space:clamp(56px,7vw,112px);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang 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;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease,opacity .2s ease;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(46,230,214,.28);color:#fff;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.container-wide{max-width:1360px;}
.section{padding-top:var(--space);padding-bottom:var(--space);position:relative;}
.section-alt{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}

/* ---------- 背景装饰 ---------- */
.bg-grid{
  position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 72%);
}
.glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;z-index:0;}
.glow-cyan{background:rgba(46,230,214,.13);}
.glow-amber{background:rgba(255,180,84,.09);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,26,43,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:72px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  display:block;
  font-size:15px;font-weight:800;line-height:1.18;letter-spacing:.01em;
  color:var(--text);
  padding-left:12px;
  border-left:3px solid var(--cyan);
  transition:color .2s ease;
}
.logo-mark em{font-style:normal;color:var(--cyan);}
.logo:hover .logo-mark{color:#fff;}

.nav-chips{
  display:flex;align-items:center;gap:6px;
  margin-left:auto;
  padding:5px;
  border-radius:999px;
  background:rgba(12,30,48,.7);
  border:1px solid var(--border);
}
.nav-chip{
  display:inline-flex;align-items:center;
  padding:8px 15px;
  font-size:14px;font-weight:500;
  color:var(--muted);
  border-radius:999px;
  white-space:nowrap;
  transition:color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-chip:hover{color:var(--text);background:rgba(46,230,214,.09);}
.nav-chip.is-active{
  color:#062029;
  background:var(--cyan);
  font-weight:700;
  box-shadow:0 0 18px rgba(46,230,214,.34);
}
.header-cta{margin-left:14px;flex-shrink:0;}

.menu-toggle{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  border-radius:12px;
  border:1px solid var(--border);
  background:rgba(12,30,48,.8);
  align-items:center;justify-content:center;
  color:var(--text);
}
.menu-toggle:hover{border-color:var(--border-strong);color:var(--cyan);}
.menu-toggle span{
  display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;
}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--border);
  background:rgba(8,23,38,.98);
  padding:18px 24px 26px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .nav-chip{
  display:block;
  padding:13px 16px;
  margin-bottom:8px;
  border-radius:12px;
  background:rgba(12,30,48,.75);
  border:1px solid var(--border);
  font-size:15px;
  color:var(--text);
}
.mobile-drawer .nav-chip.is-active{
  background:rgba(46,230,214,.16);
  color:var(--cyan);
  border-color:var(--border-strong);
  box-shadow:none;
}
.mobile-drawer .btn{width:100%;margin-top:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:12px 22px;
  font-size:15px;font-weight:700;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--cyan);
  color:#052029;
  box-shadow:0 0 24px rgba(46,230,214,.32);
}
.btn-primary:hover{
  background:#57f2e4;
  box-shadow:0 0 34px rgba(46,230,214,.5);
  transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px rgba(46,230,214,.3);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:rgba(232,241,248,.32);
}
.btn-ghost:hover{
  background:rgba(46,230,214,.08);
  border-color:var(--border-strong);
  color:#fff;
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:9px 16px;font-size:14px;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--cyan);
}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover::after{transform:translateX(4px);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding-top:clamp(48px,7vw,88px);
  padding-bottom:clamp(48px,6vw,80px);
  overflow:hidden;
  border-bottom:1px solid var(--border);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:clamp(28px,4vw,56px);
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--border-strong);
  background:rgba(46,230,214,.08);
  color:var(--cyan);
  font-size:13px;font-weight:600;
  letter-spacing:.02em;
}
.eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 10px rgba(46,230,214,.9);
}
.hero h1{
  margin-top:22px;
  font-size:clamp(34px,4.6vw,58px);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
}
.hero h1 .hl{
  color:var(--cyan);
  position:relative;
  white-space:nowrap;
}
.hero-sub{
  margin-top:22px;
  font-size:clamp(16px,1.4vw,19px);
  line-height:1.85;
  color:var(--muted);
  max-width:560px;
}
.hero-actions{
  display:flex;flex-wrap:wrap;gap:14px;
  margin-top:34px;
}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:40px;
  padding-top:26px;
  border-top:1px solid var(--border);
}
.hero-stat{
  flex:1 1 120px;
  min-width:110px;
}
.hero-stat b{
  display:block;
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;
  color:#fff;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.hero-stat b i{font-style:normal;font-size:.55em;color:var(--cyan);margin-left:2px;}
.hero-stat span{display:block;font-size:13px;color:var(--dim);margin-top:2px;}

.hero-visual{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(12,30,48,.55);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.hero-visual img{
  width:100%;height:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  opacity:.92;
}
.hero-visual::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,26,43,.05) 0%,rgba(7,26,43,.62) 100%);
}
.hero-visual-cap{
  position:absolute;left:18px;right:18px;bottom:16px;z-index:2;
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;
  border-radius:14px;
  background:rgba(9,26,44,.72);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  font-size:13.5px;
  color:var(--text);
}
.hero-visual-cap strong{color:var(--cyan);font-weight:700;}

/* ---------- 通用标题 ---------- */
.sec-head{max-width:720px;}
.sec-head h2{
  font-size:clamp(26px,3vw,38px);
  font-weight:800;
  letter-spacing:-.02em;
}
.sec-head p{
  margin-top:16px;
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:0 20px 50px rgba(0,0,0,.32);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(46,230,214,.3);
  box-shadow:0 26px 60px rgba(0,0,0,.45);
}
.card-pad{padding:clamp(22px,2.4vw,32px);}
.card h3{font-size:clamp(19px,1.8vw,23px);font-weight:700;}
.card .desc{
  margin-top:14px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}
.card .foot{margin-top:24px;}

.svc-grid{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:clamp(16px,2vw,24px);
  margin-top:clamp(32px,4vw,52px);
}
.svc-card{
  display:flex;flex-direction:column;
  grid-column:span 3;
}
.svc-card.wide{grid-column:span 3;}
.svc-card.narrow{grid-column:span 2;}
.svc-card.band{grid-column:span 5;flex-direction:row;align-items:center;gap:clamp(20px,3vw,40px);}
.svc-card.band .band-text{flex:1;}
.svc-icon{
  width:48px;height:48px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:rgba(46,230,214,.1);
  border:1px solid var(--border-strong);
  color:var(--cyan);
  font-size:13px;font-weight:800;
  letter-spacing:.02em;
  margin-bottom:20px;
  font-variant-numeric:tabular-nums;
}
.svc-card.band .svc-icon{margin-bottom:0;flex-shrink:0;}
.svc-tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;
  font-size:12.5px;font-weight:600;
  border-radius:999px;
  color:var(--amber);
  background:rgba(255,180,84,.1);
  border:1px solid rgba(255,180,84,.28);
}

/* ---------- 数据带 ---------- */
.stats-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--border);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  overflow:hidden;
  margin-top:clamp(32px,4vw,52px);
}
.stat-cell{
  background:var(--card);
  padding:clamp(22px,2.6vw,34px);
}
.stat-cell b{
  display:block;
  font-size:clamp(26px,3vw,38px);
  font-weight:800;
  color:#fff;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  line-height:1.1;
}
.stat-cell b i{font-style:normal;font-size:.5em;color:var(--cyan);margin-left:3px;}
.stat-cell span{
  display:block;margin-top:8px;
  font-size:13.5px;color:var(--dim);
}

/* ---------- 案例交错 ---------- */
.case-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:clamp(20px,3vw,36px);
  margin-top:clamp(32px,4vw,52px);
}
.case-grid > .case-card:nth-child(2){margin-top:clamp(24px,4vw,64px);}
.case-card{
  overflow:hidden;
  display:flex;flex-direction:column;
}
.case-thumb{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:linear-gradient(140deg,#0E2A47,#0A1B2E);
}
.case-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
  opacity:.9;
}
.case-card:hover .case-thumb img{transform:scale(1.04);}
.case-body{padding:clamp(20px,2.4vw,30px);}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;
  font-size:12.5px;font-weight:600;
  border-radius:999px;
  color:var(--cyan);
  background:rgba(46,230,214,.09);
  border:1px solid rgba(46,230,214,.24);
}
.tag-muted{color:var(--muted);background:rgba(255,255,255,.05);border-color:var(--border);}

/* ---------- 方案时间线 ---------- */
.plan-grid{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:clamp(28px,5vw,72px);
  align-items:start;
  margin-top:clamp(28px,3vw,20px);
}
.timeline{
  position:relative;
  padding-left:34px;
}
.timeline::before{
  content:"";
  position:absolute;left:9px;top:10px;bottom:10px;
  width:1px;
  background:linear-gradient(180deg,var(--cyan),rgba(46,230,214,.08));
}
.tl-item{position:relative;padding-bottom:32px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;left:-30px;top:8px;
  width:11px;height:11px;border-radius:50%;
  background:var(--bg);
  border:2px solid var(--cyan);
  box-shadow:0 0 12px rgba(46,230,214,.55);
}
.tl-item h3{font-size:18px;font-weight:700;}
.tl-item p{margin-top:8px;font-size:15px;line-height:1.85;color:var(--muted);}
.tl-num{
  display:inline-block;
  font-size:12.5px;font-weight:700;
  color:var(--amber);
  margin-bottom:6px;
  letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
}

/* ---------- 资讯列表 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(18px,2.2vw,26px);
  margin-top:clamp(32px,4vw,52px);
}
.news-card{
  display:flex;flex-direction:column;
  overflow:hidden;
}
.news-cover{
  display:block;
  aspect-ratio:16/10;
  overflow:hidden;
  background:linear-gradient(140deg,#0E2A47,#0A1B2E);
}
.news-cover img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
}
.news-card:hover .news-cover img{transform:scale(1.05);}
.news-body{
  padding:20px 22px 22px;
  display:flex;flex-direction:column;
  flex:1;
}
.news-body h3{
  margin-top:12px;
  font-size:17px;font-weight:700;line-height:1.55;
}
.news-body h3 a:hover{color:var(--cyan);}
.news-body p{
  margin-top:10px;
  font-size:14px;line-height:1.8;
  color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;
  padding-top:18px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--dim);
  border-top:1px solid var(--border);
  margin-top:18px;
}
.news-meta a{color:var(--cyan);font-weight:600;}
.news-meta a:hover{text-decoration:underline;}
.empty-state{
  margin-top:clamp(32px,4vw,52px);
  padding:44px 24px;
  text-align:center;
  border:1px dashed var(--border);
  border-radius:var(--r-lg);
  color:var(--muted);
  font-size:15px;
  background:rgba(12,30,48,.4);
}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:clamp(28px,5vw,64px);
  align-items:start;
}
.faq-list{border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{
  width:100%;
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:20px 4px 20px 16px;
  text-align:left;
  font-size:15.5px;font-weight:700;
  color:var(--text);
  line-height:1.6;
  border-left:3px solid transparent;
  transition:color .2s ease,border-color .2s ease,padding-left .2s ease,background-color .2s ease;
}
.faq-q:hover{color:var(--cyan);padding-left:20px;}
.faq-item.is-open .faq-q{
  color:var(--cyan);
  border-left-color:var(--cyan);
  padding-left:20px;
}
.faq-icon{
  flex-shrink:0;
  width:20px;height:20px;
  margin-top:2px;
  position:relative;
  transition:transform .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  left:50%;top:50%;transform:translate(-50%,-50%);
}
.faq-icon::before{width:13px;height:2px;}
.faq-icon::after{width:2px;height:13px;transition:opacity .25s ease;}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a p{
  padding:0 20px 22px 20px;
  font-size:15px;line-height:1.85;color:var(--muted);
}

/* ---------- 联系 & 表单 ---------- */
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:clamp(24px,3vw,40px);
  margin-top:clamp(32px,4vw,52px);
  align-items:start;
}
.info-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:clamp(24px,2.8vw,34px);
  box-shadow:0 20px 50px rgba(0,0,0,.3);
}
.info-row{
  display:flex;justify-content:space-between;gap:16px;
  padding:14px 0;
  font-size:14.5px;
  border-bottom:1px dashed rgba(255,255,255,.08);
}
.info-row:last-child{border-bottom:0;}
.info-row span{color:var(--dim);}
.info-row b{font-weight:600;color:var(--text);text-align:right;}
.form-card{
  background:rgba(12,30,48,.55);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-lg);
  padding:clamp(24px,2.8vw,34px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  margin-bottom:8px;
  font-size:13.5px;font-weight:600;color:var(--muted);
}
.field input,.field textarea,.field select{
  width:100%;
  padding:12px 14px;
  min-height:46px;
  border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(7,26,43,.72);
  color:var(--text);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
  appearance:none;
  -webkit-appearance:none;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#5E7488;}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(46,230,214,.16);
  background:rgba(9,30,50,.9);
}
.field input:invalid:not(:placeholder-shown){border-color:rgba(255,180,84,.6);}
.form-tip{
  margin-top:14px;
  font-size:13px;color:var(--dim);line-height:1.7;
}
.form-msg{
  display:none;
  margin-top:14px;
  padding:11px 14px;
  border-radius:var(--r-btn);
  font-size:14px;
  color:var(--cyan);
  background:rgba(46,230,214,.1);
  border:1px solid rgba(46,230,214,.28);
}
.form-msg.is-show{display:block;}

/* ---------- CTA 大卡 ---------- */
.cta-card{
  position:relative;
  overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:clamp(20px,4vw,48px);
  padding:clamp(30px,4vw,52px);
  border-radius:22px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(12,30,48,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
}
.cta-card h2{
  font-size:clamp(22px,2.6vw,32px);
  font-weight:800;
  letter-spacing:-.02em;
}
.cta-card p{
  margin-top:12px;
  font-size:15px;line-height:1.85;color:var(--muted);
  max-width:560px;
}
.cta-card .glow{width:340px;height:340px;right:-90px;top:-120px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-2);
  border-top:1px solid var(--border);
  padding-top:clamp(48px,6vw,76px);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:clamp(24px,3.4vw,48px);
  padding-bottom:clamp(34px,4vw,52px);
}
.footer-brand .logo-mark{font-size:16px;}
.footer-brand p{
  margin-top:18px;
  font-size:14px;line-height:1.85;color:var(--muted);
  max-width:300px;
}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--text);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col li{margin-bottom:11px;}
.footer-col a,.footer-col span{
  font-size:14px;color:var(--muted);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--dim);
}
.footer-bottom .dot{color:rgba(255,255,255,.18);margin:0 8px;}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-chip{padding:8px 12px;font-size:13.5px;}
  .header-cta{margin-left:8px;}
}
@media (max-width:1024px){
  .nav-chips,.header-cta{display:none;}
  .menu-toggle{display:flex;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-visual{max-width:620px;}
  .svc-grid{grid-template-columns:repeat(2,1fr);}
  .svc-card,.svc-card.wide,.svc-card.narrow{grid-column:span 1;}
  .svc-card.band{grid-column:span 2;flex-direction:column;align-items:flex-start;}
  .svc-card.band .svc-icon{margin-bottom:20px;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .plan-grid{grid-template-columns:1fr;gap:32px;}
  .faq-grid{grid-template-columns:1fr;gap:26px;}
  .contact-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-card{flex-direction:column;align-items:flex-start;}
}
@media (max-width:768px){
  .container{padding-left:18px;padding-right:18px;}
  .hero-stats{gap:18px 12px;}
  .hero-stat{flex:1 1 40%;}
  .case-grid{grid-template-columns:1fr;}
  .case-grid > .case-card:nth-child(2){margin-top:0;}
  .news-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .hero h1{font-size:clamp(28px,7.6vw,36px);}
  .stats-band{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .info-row{flex-direction:column;gap:4px;}
  .info-row b{text-align:left;}
}

/* roulang page: category1 */
:root{
    --bg:#071A2B;
    --bg-2:#0A1B2E;
    --card:#0C1E30;
    --primary:#0E2A47;
    --cyan:#2EE6D6;
    --amber:#FFB454;
    --text:#E8F1F8;
    --text-2:#9FB3C8;
    --text-3:#6F879C;
    --line:rgba(255,255,255,.10);
    --line-strong:rgba(46,230,214,.32);
    --r-lg:18px;
    --r-md:14px;
    --r-sm:12px;
    --shadow:0 20px 50px rgba(0,0,0,.35);
    --shadow-soft:0 10px 30px rgba(0,0,0,.28);
    --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:
      linear-gradient(rgba(46,230,214,.045) 1px,transparent 1px),
      linear-gradient(90deg,rgba(46,230,214,.045) 1px,transparent 1px);
    background-size:64px 64px;
    mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 78%);
    -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 78%);
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  ::selection{background:rgba(46,230,214,.28);color:#fff}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
  @media (min-width:1280px){.container{max-width:1360px}}

  /* ---------- 通用文字层级 ---------- */
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;
    font-size:13px;letter-spacing:.04em;
    color:var(--cyan);
    background:rgba(46,230,214,.10);
    border:1px solid var(--line-strong);
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(46,230,214,.9)}
  h1{
    font-size:clamp(34px,4.4vw,54px);
    font-weight:800;
    line-height:1.14;
    letter-spacing:-.02em;
    margin:18px 0 0;
  }
  h2{
    font-size:clamp(26px,3vw,38px);
    font-weight:700;
    line-height:1.24;
    letter-spacing:-.015em;
    margin:0;
  }
  h3{font-size:20px;font-weight:600;line-height:1.5;margin:0}
  .lead{font-size:17px;line-height:1.9;color:var(--text-2)}
  .muted{color:var(--text-2)}
  .tiny{font-size:14px;line-height:1.7;color:var(--text-3)}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 22px;
    border-radius:var(--r-sm);
    font-size:15px;font-weight:600;
    letter-spacing:.01em;
    border:1px solid transparent;
    transition:transform .18s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
    white-space:nowrap;
  }
  .btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
  .btn-primary{
    background:var(--cyan);color:#04202B;
    box-shadow:0 0 24px rgba(46,230,214,.32);
  }
  .btn-primary:hover{background:#5CF0E3;box-shadow:0 0 34px rgba(46,230,214,.5);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 0 18px rgba(46,230,214,.28)}
  .btn-ghost{
    background:transparent;color:var(--text);
    border-color:rgba(232,241,248,.28);
  }
  .btn-ghost:hover{background:rgba(46,230,214,.08);border-color:var(--line-strong);color:#fff}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{min-height:40px;padding:0 16px;font-size:14px}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(7,26,43,.88);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    height:72px;
  }
  .logo{display:inline-flex;align-items:center;flex-shrink:0}
  .logo-mark{
    display:block;
    font-size:15px;font-weight:800;line-height:1.22;
    letter-spacing:.01em;
    color:var(--text);
  }
  .logo-mark em{font-style:normal;color:var(--cyan)}
  .logo:hover .logo-mark{color:#fff}
  .logo:focus-visible{outline:2px solid var(--cyan);outline-offset:6px;border-radius:8px}

  .nav-chips{display:none;align-items:center;gap:4px}
  @media (min-width:1024px){.nav-chips{display:flex}}
  .nav-chip{
    display:inline-flex;align-items:center;
    padding:9px 15px;border-radius:999px;
    font-size:14.5px;color:var(--text-2);
    border:1px solid transparent;
    transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .nav-chip:hover{color:var(--text);background:rgba(46,230,214,.08)}
  .nav-chip:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
  .nav-chip.is-active{
    color:var(--cyan);
    background:rgba(46,230,214,.12);
    border-color:var(--line-strong);
    box-shadow:0 0 18px rgba(46,230,214,.18);
  }
  .header-actions{display:flex;align-items:center;gap:12px}
  .header-actions .btn-primary{display:none}
  @media (min-width:768px){.header-actions .btn-primary{display:inline-flex}}
  .menu-btn{
    width:44px;height:44px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);
    background:rgba(255,255,255,.03);
    transition:background-color .2s ease,border-color .2s ease;
  }
  .menu-btn:hover{background:rgba(46,230,214,.10);border-color:var(--line-strong)}
  .menu-btn:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
  @media (min-width:1024px){.menu-btn{display:none}}
  .menu-btn span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
  .menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
  .menu-btn span::before{top:-6px}
  .menu-btn span::after{top:6px}

  .mobile-drawer{display:none;border-top:1px solid var(--line);background:rgba(10,27,46,.98)}
  .mobile-drawer.is-open{display:block}
  @media (min-width:1024px){.mobile-drawer.is-open{display:none}}
  .mobile-drawer .container{padding-top:16px;padding-bottom:22px}
  .drawer-nav{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
  .drawer-nav .nav-chip{width:100%;justify-content:flex-start;padding:12px 16px;font-size:15px;background:rgba(255,255,255,.03);border-color:var(--line)}
  .drawer-nav .nav-chip.is-active{background:rgba(46,230,214,.12);border-color:var(--line-strong);color:var(--cyan)}
  .drawer-cta{display:block;width:100%}

  /* ---------- Hero ---------- */
  .page-hero{
    position:relative;
    padding:44px 0 68px;
    background:
      linear-gradient(180deg,rgba(10,27,46,.92) 0%,rgba(7,26,43,.97) 62%,rgba(7,26,43,1) 100%),
      url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .page-hero::after{
    content:"";
    position:absolute;
    width:520px;height:520px;
    right:-160px;top:-200px;
    background:radial-gradient(circle,rgba(46,230,214,.16),transparent 66%);
    filter:blur(10px);
    pointer-events:none;
  }
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13.5px;color:var(--text-3);
    margin-bottom:22px;
  }
  .breadcrumb a{color:var(--text-2);transition:color .2s ease}
  .breadcrumb a:hover{color:var(--cyan)}
  .breadcrumb .sep{color:rgba(255,255,255,.22)}
  .breadcrumb .current{color:var(--text)}

  .hero-grid{display:grid;gap:36px;align-items:center}
  @media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px}}
  .hero-copy p.sub{margin-top:20px;font-size:18px;line-height:1.8;color:var(--text-2);max-width:34em}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  @media (max-width:640px){.hero-actions .btn{width:100%}}
  .hero-media{position:relative}
  .glass{
    background:rgba(12,30,48,.55);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border:1px solid rgba(255,255,255,.12);
    border-radius:var(--r-lg);
    box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
  }
  .hero-media .glass{padding:14px}
  .hero-media img{
    width:100%;height:300px;object-fit:cover;
    border-radius:12px;
    filter:saturate(1.02);
  }
  @media (min-width:1024px){.hero-media img{height:340px}}
  .hero-media .caption{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:14px 6px 4px;
    font-size:13.5px;color:var(--text-2);
  }
  .dot-live{display:inline-flex;align-items:center;gap:7px;color:var(--cyan);font-size:13px}
  .dot-live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(46,230,214,.9)}

  /* ---------- 板块 ---------- */
  .section{padding:64px 0;position:relative}
  @media (min-width:1024px){.section{padding:96px 0}}
  .section-head{max-width:640px;margin-bottom:36px}
  .section-head p{margin-top:16px;color:var(--text-2);font-size:16.5px;line-height:1.85}

  .split{display:grid;gap:32px}
  @media (min-width:1024px){.split{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:56px;align-items:start}}
  .sticky-col{position:static}
  @media (min-width:1024px){.sticky-col{position:sticky;top:104px}}

  /* ---------- 步骤时间线 ---------- */
  .timeline{display:grid;gap:16px;counter-reset:step}
  .step{
    display:grid;grid-template-columns:52px minmax(0,1fr);gap:18px;
    padding:24px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--shadow-soft);
    transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .step:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow)}
  .step-num{
    width:46px;height:46px;border-radius:14px;
    display:grid;place-items:center;
    font-weight:800;font-size:17px;
    color:#04202B;
    background:linear-gradient(140deg,#5CF0E3,#20BCAE);
    box-shadow:0 0 18px rgba(46,230,214,.28);
  }
  .step h3{margin-bottom:8px}
  .step p{font-size:15.5px;line-height:1.85;color:var(--text-2)}
  .step .hint{
    display:inline-flex;align-items:center;gap:6px;
    margin-top:12px;font-size:13px;color:var(--amber);
  }
  .step .hint::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber)}

  /* ---------- 提示卡 ---------- */
  .tip-card{padding:26px;border-radius:var(--r-lg)}
  .tip-card h3{font-size:18px;margin-bottom:6px}
  .tip-card .tip-sub{font-size:13.5px;color:var(--text-3);margin-bottom:18px}
  .tip-list{display:grid;gap:12px}
  .tip-list li{
    display:grid;grid-template-columns:22px minmax(0,1fr);gap:10px;
    font-size:14.5px;line-height:1.75;color:var(--text-2);
    padding-bottom:12px;
    border-bottom:1px dashed rgba(255,255,255,.08);
  }
  .tip-list li:last-child{border-bottom:0;padding-bottom:0}
  .tip-list .mark{
    width:20px;height:20px;border-radius:50%;
    display:grid;place-items:center;
    background:rgba(46,230,214,.14);
    color:var(--cyan);font-size:12px;font-weight:700;
    margin-top:3px;
  }
  .tip-note{
    margin-top:18px;padding:14px 16px;
    border-radius:var(--r-md);
    background:rgba(255,180,84,.08);
    border:1px solid rgba(255,180,84,.26);
    font-size:13.5px;line-height:1.75;color:#FFD9A8;
  }

  /* ---------- 准备检查卡 ---------- */
  .check-grid{display:grid;gap:18px}
  @media (min-width:768px){.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  .check-card{
    padding:24px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--shadow-soft);
    transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .check-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow)}
  .check-card .tag{
    display:inline-flex;align-items:center;
    padding:4px 12px;border-radius:999px;
    font-size:12.5px;color:var(--cyan);
    background:rgba(46,230,214,.10);
    border:1px solid var(--line-strong);
    margin-bottom:14px;
  }
  .check-card h3{font-size:18px;margin-bottom:8px}
  .check-card p{font-size:15px;line-height:1.8;color:var(--text-2)}

  /* ---------- 异常对照 ---------- */
  .trouble-list{display:grid;gap:14px}
  .trouble-item{
    display:grid;gap:6px;
    padding:20px 22px;
    background:linear-gradient(120deg,rgba(14,42,71,.9),rgba(12,30,48,.9));
    border:1px solid var(--line);
    border-left:3px solid rgba(46,230,214,.5);
    border-radius:var(--r-md);
    transition:border-color .22s ease,transform .22s ease;
  }
  .trouble-item:hover{border-left-color:var(--cyan);transform:translateX(3px)}
  .trouble-item strong{font-size:15.5px;color:var(--text)}
  .trouble-item span{font-size:14.5px;color:var(--text-2);line-height:1.8}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;gap:32px}
  @media (min-width:1024px){.faq-wrap{grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:56px;align-items:start}}
  .faq-item{
    border:1px solid var(--line);
    border-radius:var(--r-md);
    background:var(--card);
    overflow:hidden;
    transition:border-color .22s ease,box-shadow .22s ease,background-color .22s ease;
  }
  .faq-item + .faq-item{margin-top:12px}
  .faq-item:hover{border-color:rgba(46,230,214,.22)}
  .faq-item.is-open{
    border-color:var(--line-strong);
    box-shadow:inset 3px 0 0 var(--cyan),0 12px 30px rgba(0,0,0,.28);
  }
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;text-align:left;
    font-size:16px;font-weight:600;color:var(--text);
    transition:background-color .2s ease,color .2s ease;
  }
  .faq-q:hover{background:rgba(46,230,214,.05)}
  .faq-q:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
  .faq-item.is-open .faq-q{color:var(--cyan)}
  .faq-icon{
    flex-shrink:0;width:26px;height:26px;border-radius:50%;
    display:grid;place-items:center;
    border:1px solid var(--line);
    color:var(--cyan);font-size:15px;line-height:1;
    transition:transform .28s ease,border-color .22s ease;
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--line-strong)}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .32s ease;
    padding:0 20px;
  }
  .faq-a p{font-size:15px;line-height:1.85;color:var(--text-2);padding-bottom:18px}

  /* ---------- CTA ---------- */
  .cta-section{padding:56px 0 76px}
  @media (min-width:1024px){.cta-section{padding:80px 0 104px}}
  .cta-card{
    position:relative;
    display:grid;gap:26px;
    padding:36px 28px;
    border-radius:var(--r-lg);
    background:rgba(12,30,48,.62);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border:1px solid rgba(255,255,255,.12);
    box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
    overflow:hidden;
  }
  @media (min-width:768px){.cta-card{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:44px 44px;gap:36px}}
  .cta-card::before{
    content:"";position:absolute;width:360px;height:360px;right:-100px;bottom:-180px;
    background:radial-gradient(circle,rgba(46,230,214,.18),transparent 68%);
    pointer-events:none;
  }
  .cta-card h2{font-size:clamp(24px,2.6vw,32px)}
  .cta-card p{margin-top:12px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:44em}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  @media (max-width:640px){.cta-actions .btn{width:100%}}

  /* ---------- Footer ---------- */
  .site-footer{
    position:relative;
    background:var(--bg-2);
    border-top:1px solid var(--line);
    padding:56px 0 24px;
    z-index:1;
  }
  .footer-grid{display:grid;gap:34px}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
  .footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.85;color:var(--text-3);max-width:22em}
  .footer-col h4{
    font-size:14px;font-weight:700;color:var(--text);
    letter-spacing:.06em;margin-bottom:16px;
  }
  .footer-col ul{display:grid;gap:10px}
  .footer-col li{font-size:14.5px;color:var(--text-3);line-height:1.7}
  .footer-col a{color:var(--text-2);transition:color .2s ease}
  .footer-col a:hover{color:var(--cyan)}
  .footer-col a:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
  .footer-bottom{
    margin-top:40px;padding-top:22px;
    border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px 22px;
    justify-content:space-between;
    font-size:13px;color:var(--text-3);
  }
  .footer-bottom .dot{margin:0 8px;color:rgba(255,255,255,.2)}

  @media (max-width:520px){
    .container{padding:0 18px}
    .page-hero{padding:32px 0 52px}
    .step{grid-template-columns:minmax(0,1fr);gap:12px;padding:20px}
    .step-num{width:40px;height:40px;font-size:15px}
    .hero-media img{height:220px}
    .footer-bottom{flex-direction:column}
  }

/* roulang page: article */
:root{
  --bg:#071A2B;
  --bg-2:#0A1B2E;
  --card:#0C1E30;
  --ink:#0E2A47;
  --accent:#2EE6D6;
  --amber:#FFB454;
  --text:#E8F1F8;
  --muted:#9FB3C8;
  --dim:#6F879C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(46,230,214,.32);
  --glass:rgba(12,30,48,.55);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 20px 50px rgba(0,0,0,.35);
  --font-zh:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  min-height:100%;
  color:var(--text);
  background:
    radial-gradient(1100px 560px at 82% -12%, rgba(46,230,214,.10), transparent 62%),
    radial-gradient(900px 520px at -6% 18%, rgba(255,180,84,.055), transparent 60%),
    var(--bg);
  font-family:var(--font-zh);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:linear-gradient(to bottom, #000 0%, rgba(0,0,0,.35) 55%, transparent 88%);
  mask-image:linear-gradient(to bottom, #000 0%, rgba(0,0,0,.35) 55%, transparent 88%);
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
table{border-collapse:collapse;}

.container{
  position:relative;
  z-index:1;
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1280px){
  .container{max-width:1360px;}
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,26,43,.84);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
}
.logo::before{
  content:"";
  width:34px;
  height:34px;
  flex:0 0 auto;
  border-radius:10px;
  border:1px solid rgba(46,230,214,.40);
  background:
    radial-gradient(circle at 32% 30%, rgba(46,230,214,.95), rgba(46,230,214,0) 62%),
    linear-gradient(150deg,#123A5C,#0A1E33);
  box-shadow:0 0 18px rgba(46,230,214,.28);
}
.logo-mark{
  display:block;
  font-size:13.5px;
  line-height:1.22;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--text);
}
.logo-mark em{
  font-style:normal;
  color:var(--accent);
  letter-spacing:.04em;
}
.nav-chips{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  padding:5px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(12,30,48,.52);
}
.nav-chip{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:7px 15px;
  border-radius:999px;
  font-size:14.5px;
  line-height:1.4;
  color:var(--muted);
  white-space:nowrap;
  transition:color .2s ease, background .2s ease, box-shadow .2s ease;
}
.nav-chip:hover{
  color:var(--text);
  background:rgba(46,230,214,.10);
}
.nav-chip.is-active{
  color:#04202C;
  font-weight:700;
  background:var(--accent);
  box-shadow:0 0 20px rgba(46,230,214,.42);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  margin-left:6px;
}
.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  color:var(--text);
  transition:background .2s ease, border-color .2s ease;
}
.menu-toggle:hover{
  background:rgba(46,230,214,.08);
  border-color:var(--line-strong);
}
.menu-toggle svg{width:20px;height:20px;}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(6,21,35,.98);
  padding:16px 24px 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer nav{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-bottom:14px;
}
.mobile-drawer .nav-chip{
  justify-content:flex-start;
  border:1px solid var(--line);
  border-radius:12px;
  padding:11px 14px;
  font-size:15px;
}
.mobile-drawer .btn{width:100%;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  text-align:center;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
}
.btn:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}
.btn-primary{
  background:var(--accent);
  color:#04202C;
  box-shadow:0 0 24px rgba(46,230,214,.32);
}
.btn-primary:hover{
  color:#04202C;
  background:#5BF0E3;
  box-shadow:0 0 34px rgba(46,230,214,.50);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  color:var(--text);
  border-color:rgba(232,241,248,.26);
  background:transparent;
}
.btn-ghost:hover{
  color:var(--text);
  background:rgba(46,230,214,.08);
  border-color:var(--line-strong);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{
  min-height:40px;
  padding:0 16px;
  font-size:14px;
}
.btn-block{width:100%;}

/* ---------- Chips / crumbs ---------- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:13px;
  line-height:1.6;
  color:var(--accent);
  border:1px solid var(--line-strong);
  background:rgba(46,230,214,.08);
}
.chip-amber{
  color:var(--amber);
  border-color:rgba(255,180,84,.34);
  background:rgba(255,180,84,.09);
}
.chip-sm{
  padding:3px 10px;
  font-size:12px;
}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--dim);
}
.crumbs a{color:var(--dim);}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{opacity:.5;}

/* ---------- Article head ---------- */
.article-hero{
  padding:34px 0 6px;
}
.hero-chips{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  margin-top:18px;
}
.article-title{
  margin:18px 0 0;
  max-width:920px;
  font-size:clamp(28px,3.6vw,44px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.02em;
  color:var(--text);
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px 14px;
  margin-top:18px;
  font-size:14px;
  color:var(--muted);
}
.article-meta .dot{color:var(--dim);opacity:.6;}
.hero-rule{
  margin:28px 0 0;
  height:1px;
  border:0;
  background:linear-gradient(90deg, rgba(46,230,214,.45), rgba(255,255,255,.06) 55%, transparent);
}

/* ---------- Article layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 322px;
  gap:48px;
  padding:38px 0 72px;
  align-items:start;
}
.article-main{min-width:0;}
.article-aside{
  position:sticky;
  top:94px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.aside-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px;
  box-shadow:var(--shadow);
}
.aside-card h2{
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--dim);
  margin-bottom:12px;
}
#tocList{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:2px;
  max-height:340px;
  overflow:auto;
  font-size:14.5px;
  scrollbar-width:thin;
}
#tocList a{
  display:block;
  padding:7px 10px;
  border-radius:8px;
  border-left:2px solid transparent;
  color:var(--muted);
  line-height:1.5;
  transition:color .18s ease, background .18s ease, border-color .18s ease;
}
#tocList a:hover{
  color:var(--text);
  background:rgba(46,230,214,.08);
}
#tocList a.is-active{
  color:var(--accent);
  border-left-color:var(--accent);
  background:rgba(46,230,214,.08);
}
#tocList .lv3 a{
  padding-left:22px;
  font-size:13.5px;
}
.aside-links{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:2px;
  font-size:14.5px;
}
.aside-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:9px 10px;
  border-radius:10px;
  color:var(--muted);
  border:1px solid transparent;
  transition:color .18s ease, background .18s ease, border-color .18s ease;
}
.aside-links a:hover{
  color:var(--text);
  background:rgba(46,230,214,.08);
  border-color:var(--line-strong);
}
.aside-links a span.arrow{
  color:var(--accent);
  font-size:13px;
}
.aside-note{
  font-size:13px;
  line-height:1.7;
  color:var(--dim);
  margin-top:12px;
}

/* ---------- Article body ---------- */
.article-body{
  max-width:860px;
  font-size:17.5px;
  line-height:1.9;
  color:#DCE8F2;
  word-break:break-word;
}
.article-body h2{
  margin:44px 0 16px;
  font-size:clamp(22px,2.2vw,28px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
  color:var(--text);
  scroll-margin-top:96px;
}
.article-body h3{
  margin:32px 0 12px;
  font-size:20px;
  font-weight:600;
  line-height:1.45;
  color:var(--text);
  scroll-margin-top:96px;
}
.article-body h2:first-child,
.article-body h3:first-child{margin-top:0;}
.article-body p{margin:0 0 18px;}
.article-body ul,
.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body li{margin-bottom:10px;}
.article-body li::marker{color:var(--accent);}
.article-body a{
  color:var(--accent);
  border-bottom:1px solid rgba(46,230,214,.35);
}
.article-body a:hover{border-bottom-color:var(--accent);}
.article-body strong{color:var(--text);font-weight:700;}
.article-body blockquote{
  margin:26px 0;
  padding:16px 20px;
  border-left:3px solid var(--accent);
  border-radius:0 12px 12px 0;
  background:rgba(46,230,214,.06);
  color:#CFE2EE;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  height:auto;
  margin:26px 0;
  border-radius:14px;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--dim);
  text-align:center;
}
.article-body table{
  width:100%;
  margin:26px 0;
  font-size:15.5px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-body th,
.article-body td{
  padding:12px 14px;
  text-align:left;
  border-bottom:1px solid var(--line);
}
.article-body th{
  background:rgba(46,230,214,.08);
  color:var(--text);
  font-weight:700;
}
.article-body tr:last-child td{border-bottom:0;}
.article-body code{
  padding:2px 6px;
  border-radius:6px;
  background:rgba(255,255,255,.08);
  font-size:.92em;
}
.article-body hr{
  margin:34px 0;
  border:0;
  border-top:1px solid var(--line);
}

/* ---------- Empty state ---------- */
.empty-state{
  max-width:720px;
  padding:40px 28px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--card);
  box-shadow:var(--shadow);
  text-align:center;
}
.empty-state h2{
  font-size:22px;
  font-weight:700;
  margin-bottom:12px;
}
.empty-state p{
  color:var(--muted);
  font-size:15.5px;
  margin-bottom:22px;
}

/* ---------- Related ---------- */
.related{
  margin-top:56px;
  padding-top:40px;
  border-top:1px solid var(--line);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  margin-bottom:22px;
}
.section-head h2{
  font-size:clamp(20px,2vw,24px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
}
.section-head p{
  font-size:14px;
  color:var(--dim);
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,.08);
  background:var(--card);
  box-shadow:var(--shadow);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.rel-card:hover{
  transform:translateY(-2px);
  border-color:rgba(46,230,214,.30);
  box-shadow:0 26px 56px rgba(0,0,0,.45);
  color:inherit;
}
.rel-thumb{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:linear-gradient(150deg,#0E2A47,#08192A);
}
.rel-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{
  padding:18px 20px 20px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.rel-body h3{
  font-size:16.5px;
  font-weight:600;
  line-height:1.45;
  color:var(--text);
}
.rel-meta{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--dim);
  font-variant-numeric:tabular-nums;
}
.rel-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;
  margin:72px 0 8px;
  padding:36px 38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  border-radius:22px;
  border:1px solid rgba(255,255,255,.12);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  width:420px;
  height:420px;
  right:-140px;
  top:-180px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(46,230,214,.22), transparent 68%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:640px;}
.cta-copy h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
  margin-bottom:10px;
}
.cta-copy p{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.cta-band .btn{position:relative;z-index:1;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:24px;
  padding:56px 0 28px;
  border-top:1px solid var(--line);
  background:rgba(10,27,46,.86);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{
  max-width:270px;
  font-size:14px;
  line-height:1.85;
  color:var(--muted);
}
.footer-col h4{
  margin:0 0 14px;
  font-size:14px;
  font-weight:700;
  color:var(--text);
}
.footer-col ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
  font-size:14px;
  color:var(--muted);
}
.footer-col a{color:var(--muted);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--dim);
}
.footer-bottom .dot{margin:0 6px;opacity:.5;}
.site-footer .logo-mark{font-size:13.5px;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .nav-chips{display:none;}
  .header-cta{display:none;}
  .menu-toggle{display:inline-flex;}
  .article-layout{
    grid-template-columns:minmax(0,1fr);
    gap:32px;
    padding:32px 0 60px;
  }
  .article-aside{
    position:static;
    order:-1;
    flex-direction:column;
  }
  #tocList{max-height:220px;}
  .article-body{max-width:none;font-size:17px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .header-inner{height:66px;gap:12px;}
  .logo::before{width:30px;height:30px;border-radius:9px;}
  .logo-mark{font-size:12.5px;}
  .article-hero{padding:24px 0 4px;}
  .article-title{font-size:clamp(24px,6.2vw,32px);}
  .article-meta{font-size:13px;gap:8px 10px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{padding:26px 22px;margin:52px 0 4px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin-top:34px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
}
@media (max-width:520px){
  .crumbs{font-size:12.5px;}
  .chip{font-size:12px;}
  .aside-card{padding:18px;}
  .btn{width:100%;}
  .rel-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --bg:#071A2B;
  --bg-2:#0A1B2E;
  --card:#0C1E30;
  --deep:#0E2A47;
  --cyan:#2EE6D6;
  --amber:#FFB454;
  --text:#E8F1F8;
  --text-2:#9FB3C8;
  --text-3:#6F879C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(46,230,214,.32);
  --r-lg:18px;
  --r-sm:14px;
  --shadow:0 20px 50px rgba(0,0,0,.35);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 420px at 88% -8%, rgba(46,230,214,.10), transparent 62%),
    radial-gradient(700px 380px at 6% 6%, rgba(255,180,84,.06), transparent 60%);
  background-repeat:no-repeat;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
: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}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,26,43,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:inline-flex;align-items:center;flex-shrink:0}
.logo-mark{
  font-size:17px;font-weight:800;line-height:1.15;letter-spacing:-.01em;color:var(--text);
}
.logo-mark em{font-style:normal;color:var(--cyan);letter-spacing:0}
.logo:hover .logo-mark{color:#fff}
.nav-chips{display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;overflow-x:auto;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.nav-chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 14px;border-radius:999px;font-size:14.5px;color:var(--text-2);
  border:1px solid transparent;transition:all .2s ease;
}
.nav-chip:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-chip.is-active{
  color:var(--cyan);background:rgba(46,230,214,.12);
  border-color:var(--line-strong);box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.header-cta{display:inline-flex;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .22s ease;
}
.btn-primary{
  background:var(--cyan);color:#071A2B;
  box-shadow:0 0 24px rgba(46,230,214,.32);
}
.btn-primary:hover{background:#5bf0e3;box-shadow:0 0 34px rgba(46,230,214,.5);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 18px rgba(46,230,214,.28)}
.btn-ghost{
  background:transparent;color:var(--text);border-color:rgba(232,241,248,.32);
}
.btn-ghost:hover{background:rgba(46,230,214,.08);border-color:var(--line-strong);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.menu-btn{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;
  border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);
  cursor:pointer;flex-shrink:0;
}
.menu-btn:hover{border-color:var(--line-strong);color:var(--cyan)}

/* drawer */
.drawer{
  position:fixed;inset:72px 0 0 0;z-index:55;
  background:rgba(7,26,43,.97);backdrop-filter:blur(16px);
  padding:24px;display:none;overflow-y:auto;
}
.drawer.is-open{display:block}
.drawer .nav-chips{flex-direction:column;align-items:stretch;gap:10px;overflow:visible}
.drawer .nav-chip{padding:14px 16px;border-radius:14px;font-size:16px;background:rgba(255,255,255,.04);border:1px solid var(--line)}
.drawer .btn{width:100%;margin-top:20px}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background-image:linear-gradient(100deg,rgba(7,26,43,.96) 0%,rgba(7,26,43,.88) 46%,rgba(7,26,43,.62) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:64px 64px;opacity:.5;
}
.page-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:64px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:22px}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--cyan)}
.crumbs span.sep{color:var(--text-3)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  font-size:13px;letter-spacing:.02em;color:var(--cyan);
  background:rgba(46,230,214,.10);border:1px solid var(--line-strong);margin-bottom:20px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:block;box-shadow:0 0 10px var(--cyan)}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.16;font-weight:800;letter-spacing:-.02em;
  max-width:860px;
}
.page-hero h1 em{font-style:normal;color:var(--cyan)}
.hero-sub{margin-top:18px;max-width:660px;font-size:17px;line-height:1.85;color:var(--text-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.tag:hover{color:var(--cyan);border-color:var(--line-strong)}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.22;letter-spacing:-.02em}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px}
.kicker{
  display:inline-block;font-size:13px;letter-spacing:.06em;color:var(--cyan);
  margin-bottom:12px;padding-left:12px;border-left:2px solid var(--cyan);
}

/* safety grid 2 cols cards */
.safety-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.s-card{
  position:relative;background:var(--card);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.s-card:hover{transform:translateY(-3px);border-color:rgba(46,230,214,.30);box-shadow:0 26px 60px rgba(0,0,0,.45)}
.s-card .num{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:11px;background:rgba(46,230,214,.10);border:1px solid var(--line-strong);
  color:var(--cyan);font-size:14px;font-weight:700;margin-bottom:18px;
}
.s-card h3{font-size:20px;line-height:1.4;margin-bottom:12px}
.s-card p{color:var(--text-2);font-size:15px;line-height:1.8}
.s-card .hint{
  display:block;margin-top:16px;padding-top:14px;border-top:1px dashed rgba(255,255,255,.10);
  font-size:13.5px;color:var(--text-3);
}
.s-card .hint b{color:var(--amber);font-weight:600}

/* checklist layout */
.check-wrap{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:28px;align-items:start}
.check-card{
  background:linear-gradient(160deg,rgba(12,30,48,.9),rgba(10,27,46,.7));
  border:1px solid rgba(255,255,255,.10);border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow);
}
.check-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.07);
  font-size:15.5px;line-height:1.75;
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list li:first-child{padding-top:0}
.check-box{
  flex:0 0 auto;width:22px;height:22px;border-radius:7px;margin-top:4px;
  border:1px solid var(--line-strong);background:rgba(46,230,214,.10);
  display:inline-flex;align-items:center;justify-content:center;color:var(--cyan);font-size:12px;font-weight:700;
}
.check-list b{color:var(--text);font-weight:600}
.check-list span.desc{display:block;color:var(--text-2);font-size:14px;margin-top:4px}

.side-card{
  background:rgba(12,30,48,.55);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-lg);padding:24px;backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
}
.side-card figure{margin:0 0 18px;border-radius:var(--r-sm);overflow:hidden;border:1px solid rgba(255,255,255,.08);aspect-ratio:16/10;background:#0A1B2E}
.side-card figure img{width:100%;height:100%;object-fit:cover}
.side-card h3{font-size:18px;margin-bottom:10px}
.side-card p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.side-card .mini{margin-top:18px;padding:14px 16px;border-radius:12px;background:rgba(255,180,84,.08);border:1px solid rgba(255,180,84,.28);color:#FFD8A8;font-size:13.5px;line-height:1.7}

/* risk signals */
.risk-list{display:grid;gap:14px}
.risk-item{
  display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;
  padding:22px 24px;border-radius:var(--r-sm);background:var(--bg-2);
  border:1px solid rgba(255,255,255,.08);transition:all .22s ease;
}
.risk-item:hover{border-color:rgba(255,180,84,.36);background:rgba(14,42,71,.7);transform:translateX(3px)}
.risk-item .idx{font-size:13px;letter-spacing:.08em;color:var(--amber);font-weight:700}
.risk-item h3{font-size:16.5px;margin-bottom:6px}
.risk-item p{font-size:14.5px;color:var(--text-2);line-height:1.7}
.risk-item .badge{
  padding:5px 12px;border-radius:999px;font-size:12.5px;color:var(--amber);
  background:rgba(255,180,84,.10);border:1px solid rgba(255,180,84,.30);white-space:nowrap;
}

/* steps timeline */
.steps{position:relative;padding-left:34px}
.steps::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--cyan),rgba(46,230,214,.06))}
.step{position:relative;padding-bottom:34px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-33px;top:6px;width:12px;height:12px;border-radius:50%;
  background:var(--bg);border:2px solid var(--cyan);box-shadow:0 0 12px rgba(46,230,214,.6);
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:15px;color:var(--text-2);line-height:1.8}
.step .tagline{display:block;margin-top:8px;font-size:13px;color:var(--text-3)}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:40px;align-items:start}
.faq-aside h2{font-size:clamp(26px,3vw,36px);line-height:1.25}
.faq-aside p{margin-top:16px;color:var(--text-2);font-size:15.5px}
.faq-list{display:grid;gap:12px}
.faq-item{
  border:1px solid rgba(255,255,255,.10);border-radius:var(--r-sm);background:var(--card);
  overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item.is-open{border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(46,230,214,.12)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;color:var(--text);
  font-size:15.5px;font-weight:600;text-align:left;cursor:pointer;line-height:1.6;
}
.faq-q:hover{color:var(--cyan)}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;
  color:var(--cyan);font-size:14px;transition:transform .25s ease,border-color .25s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--line-strong)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.85;border-left:2px solid transparent}
.faq-item.is-open .faq-a p{border-left-color:rgba(46,230,214,.5);padding-left:20px;margin-left:2px}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;padding:48px;
  background:rgba(12,30,48,.55);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  display:grid;grid-template-columns:minmax(0,1.4fr) auto;gap:32px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-160px;border-radius:50%;
  background:radial-gradient(circle,rgba(46,230,214,.16),transparent 66%);pointer-events:none;
}
.cta-band h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3}
.cta-band p{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ---------- footer ---------- */
.site-footer{background:#061522;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.footer-brand .logo-mark{font-size:18px}
.footer-brand p{margin-top:16px;font-size:14.5px;color:var(--text-2);line-height:1.8;max-width:280px}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:16px}
.footer-col ul{display:grid;gap:11px}
.footer-col li{font-size:14px;color:var(--text-2);line-height:1.7}
.footer-col a{color:var(--text-2)}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .dot{margin:0 8px;color:var(--text-3)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-chips{display:none}
  .header-cta{display:none}
  .menu-btn{display:inline-flex;margin-left:auto}
  .safety-grid{grid-template-columns:1fr}
  .check-wrap{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .cta-actions{justify-content:flex-start}
  .section{padding:64px 0}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .page-hero .container{padding-top:36px;padding-bottom:48px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .safety-grid{gap:16px}
  .s-card{padding:22px}
  .check-card{padding:24px}
  .risk-item{grid-template-columns:auto 1fr;gap:14px;padding:18px}
  .risk-item .badge{grid-column:1/-1;justify-self:start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section{padding:52px 0}
  .section-head{margin-bottom:30px}
}
@media (max-width:520px){
  .logo-mark{font-size:15px}
  .page-hero h1{font-size:clamp(26px,7.4vw,34px)}
  .btn{padding:0 16px;font-size:14.5px}
  .eyebrow{font-size:12px;padding:5px 12px}
  .cta-band{padding:26px;border-radius:18px}
}

/* roulang page: category3 */
:root{
  --bg:#071A2B;
  --bg-2:#0A1B2E;
  --card:#0C1E30;
  --primary:#0E2A47;
  --accent:#2EE6D6;
  --amber:#FFB454;
  --text:#E8F1F8;
  --muted:#9FB3C8;
  --dim:#6F879C;
  --border:rgba(255,255,255,.10);
  --border-strong:rgba(46,230,214,.32);
  --glass:rgba(12,30,48,.55);
  --radius-lg:18px;
  --radius-sm:14px;
  --radius-btn:12px;
  --shadow:0 20px 50px rgba(0,0,0,.35);
  --shadow-hover:0 26px 60px rgba(0,0,0,.48);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  top:-220px;
  right:-180px;
  width:560px;
  height:560px;
  background:radial-gradient(circle,rgba(46,230,214,.10),transparent 66%);
  pointer-events:none;
  z-index:0;
}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease}
img{max-width:100%;display:block}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.site-header,main,.site-footer{position:relative;z-index:1}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,26,43,.88);
  border-bottom:1px solid var(--border);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  display:block;
  font-size:15px;
  line-height:1.24;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--text);
}
.logo-mark em{
  font-style:normal;
  color:var(--accent);
  letter-spacing:.06em;
}
.nav-chips{display:flex;align-items:center;gap:6px;flex-wrap:nowrap}
.nav-chip{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:500;
  color:var(--muted);
  border:1px solid transparent;
  white-space:nowrap;
  transition:color .22s ease,background-color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.nav-chip:hover{color:var(--text);background:rgba(255,255,255,.05);border-color:var(--border)}
.nav-chip.is-active{
  color:var(--accent);
  background:rgba(46,230,214,.12);
  border-color:var(--border-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 0 18px rgba(46,230,214,.16);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  flex-direction:column;
  gap:4px;
  border:1px solid var(--border);
  border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);
  cursor:pointer;
  transition:border-color .22s ease,background-color .22s ease;
}
.menu-toggle:hover{border-color:var(--border-strong);background:rgba(46,230,214,.08)}
.menu-toggle span{display:block;width:17px;height:2px;border-radius:2px;background:var(--text);transition:transform .25s ease,opacity .25s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--border);
  background:rgba(7,26,43,.98);
  padding:16px 0 22px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer .container{display:flex;flex-direction:column;gap:8px}
.mobile-drawer .nav-chip{width:100%;height:46px;justify-content:flex-start;padding:0 18px}
.mobile-drawer .btn{margin-top:8px;width:100%}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:var(--accent);
  color:#07202B;
  box-shadow:0 0 24px rgba(46,230,214,.32);
}
.btn-primary:hover{background:#4DF1E3;box-shadow:0 0 34px rgba(46,230,214,.5)}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:rgba(232,241,248,.34);
}
.btn-ghost:hover{background:rgba(46,230,214,.08);border-color:var(--border-strong);color:#FFFFFF}
.btn-sm{min-height:44px;padding:0 18px;font-size:14.5px}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;
  padding:72px 0 64px;
  overflow:hidden;
  border-bottom:1px solid var(--border);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center right;
  opacity:.20;
  z-index:0;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(7,26,43,.97) 0%,rgba(7,26,43,.86) 48%,rgba(10,27,46,.62) 100%);
  z-index:0;
}
.page-hero .container{max-width:1100px}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--dim);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span[aria-current]{color:var(--muted)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--accent);
  background:rgba(46,230,214,.10);
  border:1px solid var(--border-strong);
  margin-bottom:20px;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,50px);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  max-width:860px;
  margin-bottom:20px;
}
.hero-lead{
  font-size:clamp(16px,1.5vw,19px);
  color:var(--muted);
  max-width:640px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{
  font-size:clamp(26px,3vw,38px);
  font-weight:700;
  line-height:1.24;
  margin-bottom:16px;
}
.section-head p{color:var(--muted);font-size:16px}
.kicker{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--amber);
  margin-bottom:14px;
}

/* ---------- Feature matrix ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:24px;
}
.feature-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:30px;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  gap:16px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.feature-card:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:var(--shadow-hover)}
.feature-card.is-wide{grid-column:span 4}
.feature-card.is-small{grid-column:span 2}
.feature-card.is-glass{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-color:rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
}
.feature-icon{
  width:48px;height:48px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:rgba(46,230,214,.10);
  border:1px solid var(--border-strong);
  font-size:20px;
  font-weight:800;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.feature-card h3{font-size:21px;font-weight:600}
.feature-card p{color:var(--muted);font-size:15.5px;line-height:1.8}
.feature-tag{
  align-self:flex-start;
  padding:4px 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  color:var(--amber);
  background:rgba(255,180,84,.10);
  border:1px solid rgba(255,180,84,.28);
}
.text-link{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--accent);
}
.text-link:hover{color:#5BF3E6}
.text-link::after{content:"›";font-size:17px;line-height:1;transform:translateY(-1px)}

/* ---------- Table ---------- */
.table-wrap{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.table-scroll{width:100%;overflow-x:auto}
table.feature-table{width:100%;border-collapse:collapse;min-width:720px}
table.feature-table thead th{
  text-align:left;
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--muted);
  background:rgba(14,42,71,.72);
  padding:18px 24px;
  border-bottom:1px solid var(--border);
  white-space:nowrap;
}
table.feature-table tbody td{
  padding:20px 24px;
  font-size:15px;
  color:var(--muted);
  border-bottom:1px solid rgba(255,255,255,.06);
  vertical-align:top;
}
table.feature-table tbody td:first-child{
  color:var(--text);
  font-weight:600;
  white-space:nowrap;
}
table.feature-table tbody tr:last-child td{border-bottom:none}
table.feature-table tbody tr{transition:background-color .2s ease}
table.feature-table tbody tr:hover{background:rgba(46,230,214,.05)}
.table-note{
  padding:16px 24px;
  font-size:13.5px;
  color:var(--dim);
  background:rgba(14,42,71,.42);
  border-top:1px solid var(--border);
}

/* ---------- Split ---------- */
.split{
  display:grid;
  grid-template-columns:1.02fr 1fr;
  gap:56px;
  align-items:center;
}
.split-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow);
}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.split-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,26,43,0) 42%,rgba(7,26,43,.72) 100%);
  pointer-events:none;
}
.split-media figcaption{
  position:absolute;
  left:20px;bottom:16px;
  z-index:2;
  font-size:13px;
  color:var(--muted);
}
.step-list{display:flex;flex-direction:column;gap:0;margin-top:28px}
.step-item{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:18px;
  padding:22px 0;
  border-top:1px solid var(--border);
}
.step-item:last-child{border-bottom:1px solid var(--border)}
.step-num{
  width:44px;height:44px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;
  font-size:15px;
  color:var(--accent);
  background:rgba(46,230,214,.10);
  border:1px solid var(--border-strong);
  font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:17.5px;font-weight:600;margin-bottom:6px}
.step-item p{font-size:15px;color:var(--muted)}

/* ---------- Compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{
  padding:30px;
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  background:var(--card);
  box-shadow:var(--shadow);
  transition:border-color .25s ease,transform .25s ease;
}
.compare-card:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.compare-card.is-accent{
  background:linear-gradient(160deg,rgba(46,230,214,.10),rgba(12,30,48,.9));
  border-color:rgba(46,230,214,.26);
}
.compare-card h3{font-size:20px;font-weight:600;margin-bottom:8px}
.compare-card .compare-sub{font-size:13.5px;color:var(--dim);margin-bottom:20px}
.compare-card ul{display:flex;flex-direction:column;gap:12px}
.compare-card li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  color:var(--muted);
  line-height:1.75;
}
.compare-card li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--accent);
  opacity:.75;
}
.compare-card.is-accent li::before{background:var(--amber);opacity:.85}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start}
.faq-intro h2{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.24;margin-bottom:16px}
.faq-intro p{color:var(--muted);max-width:360px}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:rgba(12,30,48,.72);
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.is-open{border-color:var(--border-strong);box-shadow:0 0 0 1px rgba(46,230,214,.18),0 14px 34px rgba(0,0,0,.32)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  background:transparent;
  border:none;
  color:var(--text);
  font-size:15.5px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  line-height:1.6;
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  flex-shrink:0;
  width:22px;height:22px;
  position:relative;
  border-radius:50%;
  border:1px solid var(--border-strong);
  transition:transform .3s ease,background-color .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  background:var(--accent);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px;transition:opacity .25s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:rgba(46,230,214,.14)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  opacity:0;
  transition:max-height .38s ease,opacity .3s ease;
}
.faq-item.is-open .faq-a{max-height:320px;opacity:1}
.faq-a p{
  padding:0 22px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-section{padding:24px 0 96px}
.cta-card{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  padding:48px;
  border-radius:22px;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.cta-card::before{
  content:"";
  position:absolute;
  right:-120px;top:-140px;
  width:380px;height:380px;
  background:radial-gradient(circle,rgba(46,230,214,.18),transparent 68%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:620px}
.cta-copy h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.26;margin-bottom:14px}
.cta-copy p{color:var(--muted);font-size:15.5px}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0}

/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--border);
  background:rgba(6,22,37,.86);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--dim);line-height:1.8;max-width:280px}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--text);
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li{font-size:14px;color:var(--dim);line-height:1.7}
.footer-col a{color:var(--muted)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:26px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--dim);
}
.footer-bottom .dot{margin:0 8px;opacity:.6}

/* ---------- Responsive ---------- */
@media (max-width:1280px){
  .container{padding:0 24px}
}
@media (max-width:1024px){
  .nav-chips{display:none}
  .menu-toggle{display:flex}
  .header-actions .btn{display:none}
  .section{padding:72px 0}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .feature-card.is-wide,.feature-card.is-small{grid-column:span 1}
  .split{grid-template-columns:1fr;gap:36px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-intro p{max-width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:36px}
  .cta-actions{width:100%}
}
@media (max-width:768px){
  .page-hero{padding:48px 0 44px}
  .section,.section--tight{padding:56px 0}
  .section-head{margin-bottom:32px}
  .feature-grid{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .feature-card,.compare-card{padding:24px}
  .cta-section{padding:8px 0 64px}
  .hero-actions{width:100%}
  .hero-actions .btn{flex:1 1 100%}
  .site-footer{padding:56px 0 26px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .logo-mark{font-size:14px}
  .eyebrow{font-size:12px;padding:5px 12px}
  .btn{padding:0 18px;font-size:14.5px}
  .feature-card h3{font-size:19px}
  .step-item{grid-template-columns:38px 1fr;gap:14px}
  .step-num{width:38px;height:38px;font-size:14px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --bg:#071A2B;
  --bg-2:#0A1B2E;
  --card:#0C1E30;
  --deep:#0E2A47;
  --cyan:#2EE6D6;
  --cyan-soft:rgba(46,230,214,.12);
  --amber:#FFB454;
  --text:#E8F1F8;
  --text-2:#9FB3C8;
  --text-3:#6F879C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(46,230,214,.32);
  --r-lg:18px;
  --r-sm:14px;
  --r-btn:12px;
  --shadow:0 20px 50px rgba(0,0,0,.35);
  --glow:0 0 24px rgba(46,230,214,.32);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang 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;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.6;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{letter-spacing:-.01em;line-height:1.25}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid transparent;background:none;color:var(--text);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{background:var(--cyan);color:#04222A;box-shadow:var(--glow)}
.btn-primary:hover{background:#5CF0E3;box-shadow:0 0 34px rgba(46,230,214,.46);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px rgba(46,230,214,.28)}
.btn-ghost{border-color:rgba(232,241,248,.34);color:var(--text)}
.btn-ghost:hover{background:rgba(46,230,214,.08);border-color:var(--line-strong);color:#fff}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:11px}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,26,43,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:72px}
.logo{display:flex;align-items:center;flex:0 0 auto}
.logo-mark{font-size:15px;font-weight:800;line-height:1.16;color:var(--text);letter-spacing:.01em}
.logo-mark em{font-style:normal;color:var(--cyan)}
.nav-chips{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-chip{
  display:inline-flex;align-items:center;padding:8px 15px;border-radius:999px;
  font-size:14.5px;color:var(--text-2);border:1px solid transparent;white-space:nowrap;
  transition:color .2s,background .2s,border-color .2s,box-shadow .2s;
}
.nav-chip:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-chip.is-active{color:#04222A;background:var(--cyan);font-weight:600;box-shadow:0 0 18px rgba(46,230,214,.3)}
.nav-chip:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.header-actions{display:flex;align-items:center;gap:10px}
.menu-btn{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);
  transition:border-color .2s,background .2s;
}
.menu-btn:hover{border-color:var(--line-strong);background:rgba(46,230,214,.1)}
.menu-btn svg{width:20px;height:20px}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:rgba(7,26,43,.99);padding:14px 24px 22px}
.mobile-drawer.open{display:block}
.mobile-drawer a{display:block;padding:12px 14px;border-radius:12px;color:var(--text-2);font-size:15px;border:1px solid transparent;transition:.2s}
.mobile-drawer a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.mobile-drawer a.is-active{color:#04222A;background:var(--cyan);font-weight:600}
.mobile-drawer .drawer-cta{margin-top:12px}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:60px 0 68px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(10,27,46,.82),rgba(7,26,43,.96)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;right:-8%;bottom:-46%;width:460px;height:460px;
  background:radial-gradient(circle,rgba(46,230,214,.18),transparent 66%);
  pointer-events:none;
}
.page-hero::before{
  content:"";position:absolute;left:-6%;top:-40%;width:360px;height:360px;
  background:radial-gradient(circle,rgba(255,180,84,.09),transparent 68%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-2);transition:color .2s}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.page-hero h1{
  font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.16;letter-spacing:-.02em;
  max-width:880px;margin-bottom:20px;
}
.page-hero h1 .hl{color:var(--cyan)}
.hero-lead{max-width:660px;font-size:17px;color:var(--text-2);line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(46,230,214,.8)}
.tag.is-amber .dot{background:var(--amber);box-shadow:0 0 10px rgba(255,180,84,.8)}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:740px;margin-bottom:40px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--cyan);letter-spacing:.04em;margin-bottom:14px;font-weight:600}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);opacity:.7}
.section-title{font-size:clamp(26px,3vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.015em}
.section-desc{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85}

/* ---------- 筛选 chip ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.filter-chip{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text-2);font-size:14px;
  transition:color .2s,border-color .2s,background .2s;
}
.filter-chip:hover{color:var(--text);border-color:var(--line-strong)}
.filter-chip.is-active{background:var(--cyan-soft);border-color:var(--line-strong);color:var(--cyan);font-weight:600}
.filter-chip:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* ---------- FAQ 手风琴 ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);
  overflow:hidden;transition:border-color .22s,box-shadow .22s;
}
.faq-item:hover{border-color:rgba(46,230,214,.22)}
.faq-item.open{border-color:var(--line-strong);box-shadow:inset 2px 0 0 var(--cyan),0 14px 34px rgba(0,0,0,.34)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:14px;
  padding:19px 22px;background:none;border:0;text-align:left;
  color:var(--text);font-size:15.5px;font-weight:600;line-height:1.6;
}
.faq-q:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
.faq-ico{position:relative;flex:0 0 auto;width:20px;height:20px;margin-top:3px}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background:var(--cyan);border-radius:2px;transition:transform .28s ease,opacity .28s ease}
.faq-ico::before{left:50%;top:2px;width:2px;height:16px;transform:translateX(-50%)}
.faq-ico::after{top:50%;left:2px;width:16px;height:2px;transform:translateY(-50%)}
.faq-item.open .faq-ico::before{transform:translateX(-50%) rotate(90deg);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s ease}
.faq-a>div{overflow:hidden}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a p{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85}

/* ---------- 分栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,26,43,0) 42%,rgba(7,26,43,.74));pointer-events:none}
.figure figcaption{
  position:absolute;left:20px;right:20px;bottom:16px;z-index:2;
  font-size:13px;color:var(--text-2);
}
.steps{position:relative;padding-left:30px;margin-top:28px}
.steps::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;background:linear-gradient(180deg,rgba(46,230,214,.55),rgba(46,230,214,.06))}
.step{position:relative;padding-bottom:24px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-30px;top:7px;width:16px;height:16px;border-radius:50%;
  background:var(--bg);border:2px solid var(--cyan);box-shadow:0 0 12px rgba(46,230,214,.45);
}
.step h3{font-size:17px;font-weight:600;margin-bottom:6px}
.step p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.checklist{display:grid;gap:12px;margin-top:30px}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;padding:14px 16px;
  background:rgba(255,255,255,.025);border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:14.5px;color:var(--text-2);line-height:1.7;
}
.checklist li b{color:var(--text);font-weight:600}
.tick{
  flex:0 0 auto;width:20px;height:20px;border-radius:50%;margin-top:3px;
  background:rgba(46,230,214,.14);border:1px solid var(--line-strong);
  position:relative;
}
.tick::after{
  content:"";position:absolute;left:6px;top:4px;width:5px;height:9px;
  border-right:1.6px solid var(--cyan);border-bottom:1.6px solid var(--cyan);
  transform:rotate(45deg);
}

/* ---------- 表单与信息卡 ---------- */
.contact-wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:26px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--shadow)}
.panel h3{font-size:20px;font-weight:600;margin-bottom:8px}
.panel .panel-desc{font-size:14.5px;color:var(--text-2);line-height:1.8}
.info-list{margin-top:22px}
.info-list li{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.09);font-size:14.5px;color:var(--text-2)}
.info-list li:last-child{border-bottom:0}
.info-list li span:last-child{color:var(--text);font-weight:500;text-align:right}
.panel-note{
  margin-top:20px;padding:14px 16px;border-radius:12px;font-size:13.5px;line-height:1.75;
  background:rgba(255,180,84,.08);border:1px solid rgba(255,180,84,.28);color:#FFD8A6;
}
.form-row{display:grid;gap:16px}
.form-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;padding:11px 14px;
  background:#081A2A;border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text);font-size:15px;font-family:inherit;line-height:1.6;
  -webkit-appearance:none;appearance:none;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.field textarea{min-height:112px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(46,230,214,.14);background:#0A1F32;
}
.field select{
  padding-right:38px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239FB3C8' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:12px;
}
.form-note{font-size:13px;color:var(--text-3);margin-top:4px}
.form-tip{
  display:none;margin-top:14px;padding:12px 16px;border-radius:12px;font-size:14px;line-height:1.7;
  background:rgba(255,180,84,.1);border:1px solid rgba(255,180,84,.34);color:#FFD8A6;
}
.form-tip.show{display:block}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  padding:44px 40px;border-radius:var(--r-lg);
  background:rgba(12,30,48,.58);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-80px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(46,230,214,.16),transparent 66%);pointer-events:none;
}
.cta-band h2{font-size:clamp(23px,2.6vw,32px);font-weight:700;margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:520px;line-height:1.8}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding:64px 0 26px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand p{margin-top:16px;color:var(--text-2);font-size:14px;line-height:1.8;max-width:290px}
.footer-col h4{font-size:14px;color:var(--text);font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);line-height:1.7}
.footer-col a{transition:color .2s}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:46px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom .dot{margin:0 8px;opacity:.6}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-chips{display:none}
  .menu-btn{display:inline-flex}
  .header-actions{margin-left:auto}
  .split{grid-template-columns:1fr;gap:34px}
  .contact-wrap{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .header-inner{height:66px;gap:14px}
  .header-actions .btn-sm{display:none}
  .section{padding:58px 0}
  .section--tight{padding:46px 0}
  .page-hero{padding:42px 0 52px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .cta-band{padding:32px 22px;gap:22px}
  .cta-band .btn{width:100%}
  .panel{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .form-grid-2{grid-template-columns:1fr}
}
@media (max-width:520px){
  .page-hero h1{font-size:27px;line-height:1.25}
  .section-title{font-size:23px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .filter-bar{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .filter-bar::-webkit-scrollbar{height:0}
  .filter-chip{flex:0 0 auto}
}