/* roulang page: index */
:root{
  --bg-0:#070B12;
  --bg-1:#0B1220;
  --bg-2:#101A2B;
  --brand:#14E0C8;
  --brand-700:#06A694;
  --accent:#FF8A3D;
  --info:#4C8DFF;
  --text-1:#EAF2FF;
  --text-2:#A7B6CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.08);
  --glow-line:rgba(20,224,200,.28);
  --r-card:14px;
  --r-panel:20px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow-1:0 6px 18px rgba(0,0,0,.35);
  --shadow-2:0 10px 28px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(20,224,200,.28),0 8px 30px rgba(20,224,200,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1180px;
  --gap:22px;
  --pad-section:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.tabnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

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

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,18,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  bottom:-1px;
  width:120px;
  height:1px;
  background:linear-gradient(90deg,rgba(20,224,200,0),var(--brand),rgba(20,224,200,0));
}
.nav-inner{
  height:68px;
  display:flex;
  align-items:center;
  gap:28px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--text-1);
  white-space:nowrap;
}
.logo-mark{
  width:30px;
  height:30px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand),var(--brand-700));
  display:grid;
  place-items:center;
  color:#06121A;
  font-size:15px;
  font-weight:800;
  box-shadow:0 0 0 1px rgba(20,224,200,.35),0 6px 16px rgba(20,224,200,.22);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  transition:color 180ms var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:10px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:translateX(-50%);
  transition:width 180ms var(--ease);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{width:40%;}
.nav-link.is-active{
  color:var(--brand);
  text-shadow:0 0 12px rgba(20,224,200,.55);
}
.nav-link.is-active::after{
  width:40%;
  height:3px;
  box-shadow:0 0 12px rgba(20,224,200,.6);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--brand));
  color:#06121A;
  box-shadow:var(--shadow-1);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow);}
.btn-secondary{
  background:transparent;
  border-color:var(--glow-line);
  color:var(--brand);
}
.btn-secondary:hover{background:rgba(20,224,200,.12);transform:translateY(-1px);}
.btn-ghost{
  position:relative;
  background:none;
  border:none;
  padding:0 4px;
  color:var(--text-1);
  min-height:44px;
}
.btn-ghost::after{
  content:"";
  position:absolute;
  left:4px;
  right:4px;
  bottom:12px;
  height:1px;
  background:var(--brand);
  transform:scaleX(.35);
  transform-origin:left;
  transition:transform 180ms var(--ease);
}
.btn-ghost:hover::after{transform:scaleX(1);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;box-shadow:none;cursor:not-allowed;}
.nav-cta{min-height:44px;padding:0 18px;font-size:14px;}

/* 汉堡与抽屉 */
.burger{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:rgba(255,255,255,.03);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform 180ms var(--ease),opacity 180ms var(--ease);}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:min(320px,84vw);
  background:var(--bg-2);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform 240ms var(--ease);
  z-index:80;
  padding:78px 0 24px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 22px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  position:relative;
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.drawer a:hover{color:var(--text-1);background:rgba(255,255,255,.03);}
.drawer a.is-active{
  color:var(--brand);
  background:rgba(20,224,200,.06);
}
.drawer a.is-active::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  bottom:12px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
  box-shadow:0 0 12px rgba(20,224,200,.7);
}
.drawer-cta{margin:20px 22px 0;}
.drawer-cta .btn{width:100%;}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(4,7,12,.62);
  opacity:0;
  visibility:hidden;
  transition:opacity 200ms var(--ease),visibility 200ms var(--ease);
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* 首屏 */
.hero{
  position:relative;
  padding:76px 0 72px;
  background:
    radial-gradient(900px 420px at 12% -10%,rgba(20,224,200,.10),rgba(7,11,18,0) 62%),
    radial-gradient(760px 380px at 92% 6%,rgba(255,138,61,.08),rgba(7,11,18,0) 60%),
    var(--bg-0);
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:36px;
  align-items:center;
}
.hero-copy{grid-column:span 6;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border-radius:var(--r-badge);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--brand);
  background:rgba(20,224,200,.10);
  border:1px solid var(--glow-line);
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(20,224,200,.8);}
.hero h1{
  margin:20px 0 0;
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--brand),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin-top:18px;
  max-width:540px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-actions .btn-primary{animation:pulseGlow 2.6s ease-in-out 1;}
@keyframes pulseGlow{
  0%{box-shadow:var(--shadow-1);}
  45%{box-shadow:0 0 0 1px rgba(20,224,200,.45),0 10px 34px rgba(20,224,200,.35);}
  100%{box-shadow:var(--shadow-1);}
}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:38px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.trust-item .trust-num{
  font-size:22px;
  font-weight:800;
  color:var(--text-1);
  font-variant-numeric:tabular-nums;
}
.trust-item .trust-num span{font-size:13px;color:var(--accent);margin-left:2px;}
.trust-item .trust-label{
  margin-top:2px;
  font-size:13px;
  color:var(--text-3);
}
.hero-visual{
  grid-column:span 6;
  position:relative;
}
.hero-frame{
  position:relative;
  border-radius:var(--r-panel);
  overflow:hidden;
  border:1px solid var(--glow-line);
  box-shadow:var(--shadow-2);
  aspect-ratio:16/11;
}
.hero-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.hero-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,18,.12),rgba(7,11,18,.62));
}
.float-card{
  position:absolute;
  left:-14px;
  bottom:-22px;
  width:min(268px,80%);
  padding:16px 18px;
  border-radius:var(--r-panel);
  background:rgba(16,26,43,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--glow-line);
  box-shadow:var(--shadow-glow);
}
.float-card .fc-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12px;
  color:var(--text-3);
}
.float-card .fc-score{
  margin:8px 0 4px;
  font-size:26px;
  font-weight:800;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
  color:var(--text-1);
}
.float-card .fc-score b{color:var(--accent);}
.float-card .fc-note{font-size:13px;color:var(--text-2);}
.live-dot{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  color:var(--accent);
}
.live-dot i{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px rgba(255,138,61,.9);
}

/* 数据带 */
.stats-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.stat-item{
  padding:34px 22px;
  position:relative;
}
.stat-item + .stat-item::before{
  content:"";
  position:absolute;
  left:0;
  top:34px;
  bottom:34px;
  width:1px;
  background:linear-gradient(180deg,rgba(20,224,200,0),rgba(20,224,200,.45),rgba(20,224,200,0));
}
.stat-num{
  font-size:clamp(26px,3vw,38px);
  font-weight:800;
  letter-spacing:-.01em;
  font-variant-numeric:tabular-nums;
  color:var(--text-1);
}
.stat-num i{font-style:normal;font-size:14px;color:var(--accent);margin-left:3px;}
.stat-label{margin-top:6px;font-size:14px;color:var(--text-2);}

/* 通用板块 */
.section{padding:var(--pad-section) 0;}
.section-alt{background:var(--bg-1);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head .h2{
  font-size:clamp(23px,3vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-head .h2 span{color:var(--brand);}
.section-head .lead{
  margin-top:12px;
  max-width:620px;
  font-size:15px;
  color:var(--text-2);
}
.head-link{
  flex:0 0 auto;
  font-size:15px;
  color:var(--brand);
  border-bottom:1px solid transparent;
  transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.head-link:hover{border-color:var(--brand);}

/* 三步上手 */
.steps-track{position:relative;}
.steps-track::before{
  content:"";
  position:absolute;
  left:4%;
  right:4%;
  top:34px;
  height:1px;
  background:linear-gradient(90deg,rgba(20,224,200,.06),rgba(20,224,200,.4),rgba(20,224,200,.06));
}
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
.step-card{
  position:relative;
  padding:30px 26px 24px;
  border-radius:var(--r-panel);
  background:rgba(16,26,43,.62);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.step-card:hover{
  border-color:var(--glow-line);
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
}
.step-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:56px;
  height:28px;
  padding:0 10px;
  border-radius:var(--r-badge);
  background:rgba(255,138,61,.14);
  color:var(--accent);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
}
.step-card h3{
  margin-top:18px;
  font-size:20px;
  font-weight:600;
}
.step-card p{
  margin-top:12px;
  font-size:15px;
  color:var(--text-2);
}
.step-more{
  display:inline-block;
  margin-top:18px;
  font-size:14px;
  color:var(--brand);
  border-bottom:1px dashed rgba(20,224,200,.5);
}

/* 案例 */
.cases{display:grid;gap:var(--gap);}
.case-card{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  align-items:center;
  gap:0;
  overflow:hidden;
  border-radius:var(--r-card);
  background:var(--bg-2);
  border:1px solid var(--line);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.case-card:hover{border-color:var(--glow-line);transform:translateY(-2px);}
.case-card.reverse{grid-template-columns:1fr 1.05fr;}
.case-card.reverse .case-media{order:2;}
.case-media{position:relative;height:100%;min-height:280px;}
.case-media img{width:100%;height:100%;object-fit:cover;}
.case-body{padding:34px 36px;}
.case-body .tag{
  display:inline-block;
  padding:4px 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  color:var(--info);
  background:rgba(76,141,255,.12);
}
.case-body h3{margin-top:16px;font-size:22px;font-weight:700;line-height:1.4;}
.case-body p{margin-top:14px;font-size:15px;color:var(--text-2);}
.case-body ul{margin-top:16px;display:grid;gap:8px;}
.case-body li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--text-2);
}
.case-body li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:8px;
  height:1px;
  background:var(--brand);
}
.mini-stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
  margin-top:var(--gap);
}
.mini-stat{
  padding:24px;
  border-radius:var(--r-panel);
  background:rgba(16,26,43,.62);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  transition:border-color 180ms var(--ease);
}
.mini-stat:hover{border-color:var(--glow-line);}
.mini-stat .num{
  font-size:32px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  color:var(--brand);
}
.mini-stat .num i{font-style:normal;font-size:14px;color:var(--text-2);margin-left:3px;}
.mini-stat .desc{margin-top:6px;font-size:14px;color:var(--text-2);}

/* 最新信息 */
.news-layout{
  display:grid;
  grid-template-columns:280px 1fr;
  gap:44px;
}
.news-rail{
  align-self:start;
  position:sticky;
  top:96px;
  padding-right:8px;
}
.news-rail .rail-title{
  font-size:clamp(23px,3vw,34px);
  font-weight:700;
  line-height:1.25;
}
.news-rail .rail-title span{color:var(--brand);}
.news-rail .rail-desc{
  margin-top:14px;
  font-size:15px;
  color:var(--text-2);
}
.rail-meta{
  margin-top:22px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.rail-meta strong{display:block;font-size:22px;color:var(--text-1);font-weight:800;}
.news-list{display:grid;gap:16px;}
.news-item{
  display:block;
  padding:22px 24px;
  border-radius:var(--r-card);
  background:var(--bg-2);
  border:1px solid var(--line);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.news-item:hover{
  border-color:var(--glow-line);
  transform:translateY(-2px);
  box-shadow:var(--shadow-1);
}
.news-item h3{
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--text-1);
  transition:color 180ms var(--ease);
}
.news-item:hover h3{color:var(--brand);}
.news-item .summary{
  margin-top:8px;
  font-size:15px;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:14px;
  margin-top:14px;
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.news-meta .badge{
  padding:3px 9px;
  border-radius:var(--r-badge);
  font-size:12px;
  color:var(--info);
  background:rgba(76,141,255,.12);
}
.news-meta .read{color:var(--brand);margin-left:auto;}
.empty-state{
  padding:54px 28px;
  border-radius:var(--r-card);
  background:var(--bg-2);
  border:1px dashed var(--line);
  text-align:center;
}
.empty-state .icon{
  width:52px;
  height:52px;
  margin:0 auto 16px;
  border-radius:14px;
  display:grid;
  place-items:center;
  background:rgba(20,224,200,.08);
  border:1px solid var(--glow-line);
  color:var(--brand);
  font-size:22px;
}
.empty-state p{font-size:15px;color:var(--text-2);}
.empty-state .btn{margin-top:18px;}

/* FAQ */
.faq-layout{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:48px;
  align-items:start;
}
.faq-side .h2{
  font-size:clamp(23px,3vw,34px);
  line-height:1.25;
  font-weight:700;
}
.faq-side .h2 span{color:var(--brand);}
.faq-side p{margin-top:14px;font-size:15px;color:var(--text-2);}
.faq-side .side-stat{
  margin-top:26px;
  padding:20px;
  border-radius:var(--r-card);
  background:var(--bg-2);
  border:1px solid var(--line);
}
.faq-side .side-stat b{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--accent);}
.faq-side .side-stat span{display:block;margin-top:4px;font-size:13px;color:var(--text-3);}
.faq-list{display:grid;gap:12px;}
.faq-item{
  border-radius:var(--r-card);
  background:var(--bg-2);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color 180ms var(--ease);
}
.faq-item[open]{border-color:var(--glow-line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 22px;
  font-size:15px;
  font-weight:600;
  color:var(--text-1);
  display:flex;
  align-items:center;
  gap:12px;
  min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  margin-left:auto;
  font-size:18px;
  line-height:1;
  color:var(--brand);
  transition:transform 180ms var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .answer{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* CTA */
.cta-band{
  padding:var(--pad-section) 0;
  background:
    radial-gradient(720px 320px at 8% 0%,rgba(20,224,200,.12),rgba(7,11,18,0) 60%),
    radial-gradient(600px 300px at 96% 100%,rgba(255,138,61,.10),rgba(7,11,18,0) 62%),
    var(--bg-1);
  border-top:1px solid var(--line);
}
.cta-grid{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:44px;
  align-items:start;
}
.cta-copy h2{
  font-size:clamp(23px,3vw,34px);
  line-height:1.25;
  font-weight:700;
}
.cta-copy h2 span{color:var(--accent);}
.cta-copy p{margin-top:16px;font-size:15px;color:var(--text-2);}
.cta-points{margin-top:24px;display:grid;gap:10px;}
.cta-points li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  color:var(--text-2);
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  width:10px;
  height:10px;
  border-radius:3px;
  border:1px solid var(--brand);
  background:rgba(20,224,200,.14);
}
.cta-form{
  padding:30px;
  border-radius:var(--r-panel);
  background:rgba(16,26,43,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--glow-line);
  box-shadow:var(--shadow-2);
}
.field{margin-bottom:16px;}
.field label{
  display:block;
  margin-bottom:8px;
  font-size:13px;
  color:var(--text-2);
}
.field input,
.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text-1);
  font-size:15px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.field textarea{min-height:96px;resize:vertical;}
.field input::placeholder,
.field textarea::placeholder{color:var(--text-3);}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(20,224,200,.16);
}
.form-note{
  margin-top:14px;
  font-size:13px;
  color:var(--text-3);
}
.form-error{
  margin-top:10px;
  font-size:13px;
  color:#FF6B6B;
  display:none;
}
.cta-form .btn{width:100%;margin-top:6px;}

/* 页脚 */
.site-footer{
  background:#050810;
  border-top:1px solid var(--line);
  position:relative;
  padding:64px 0 0;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(20,224,200,0),rgba(20,224,200,.5),rgba(255,138,61,.35),rgba(20,224,200,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:36px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:340px;}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.04em;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
  transition:color 180ms var(--ease);
}
.footer-col a:hover{color:var(--brand);}
.footer-col .contact-line{
  font-size:14px;
  color:var(--text-2);
  font-variant-numeric:tabular-nums;
}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* 响应式 */
@media (max-width:1199px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  :root{--pad-section:80px;}
  .hero-copy,.hero-visual{grid-column:span 12;}
  .hero-grid{gap:44px;}
  .float-card{left:auto;right:12px;bottom:-18px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(3)::before{display:none;}
  .stat-item:nth-child(3),
  .stat-item:nth-child(4){border-top:1px solid var(--line);}
  .news-layout{grid-template-columns:1fr;gap:32px;}
  .news-rail{position:static;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .burger{display:flex;}
  .nav-actions .nav-cta{display:none;}
  .steps{grid-template-columns:1fr;}
  .steps-track::before{left:26px;right:auto;top:20px;bottom:20px;width:1px;height:auto;background:linear-gradient(180deg,rgba(20,224,200,.05),rgba(20,224,200,.4),rgba(20,224,200,.05));}
  .case-card,.case-card.reverse{grid-template-columns:1fr;}
  .case-card.reverse .case-media{order:0;}
  .case-media{min-height:220px;}
  .mini-stats{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--pad-section:64px;}
  .hero{padding:48px 0 56px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .trust-row{gap:20px;}
  .case-body{padding:26px 22px;}
  .stats-grid{grid-template-columns:1fr;}
  .stat-item{border-top:1px solid var(--line);padding:24px 18px;}
  .stat-item:first-child{border-top:none;}
  .stat-item::before{display:none;}
  .news-item{padding:18px 18px;}
  .cta-form{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:560px){
  :root{--pad-section:44px;--gap:16px;}
  .container{padding:0 18px;}
  .hero-actions .btn{width:100%;}
  .hero h1{font-size:clamp(28px,7vw,34px);}
  .btn{font-size:15px;}
  .float-card{position:static;margin-top:14px;width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --bg-0:#070B12;
  --bg-1:#0B1220;
  --bg-2:#101A2B;
  --brand:#14E0C8;
  --brand-700:#06A694;
  --accent:#FF8A3D;
  --info:#4C8DFF;
  --text-1:#EAF2FF;
  --text-2:#A7B6CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(20,224,200,.28);
  --r-card:14px;
  --r-panel:20px;
  --r-btn:10px;
  --sh-1:0 6px 18px rgba(0,0,0,.35);
  --sh-2:0 10px 28px rgba(0,0,0,.45);
  --sh-glow:0 0 0 1px rgba(20,224,200,.28),0 8px 30px rgba(20,224,200,.18);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --container:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t),opacity var(--t)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(20,224,200,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--brand));
  color:#06121A;font-weight:700;box-shadow:var(--sh-1);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-glow)}
.btn-ghost-border{
  background:transparent;color:var(--text-1);border:1px solid var(--brand);
}
.btn-ghost-border:hover{background:rgba(20,224,200,.12);color:#fff}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;min-height:44px;
  color:var(--brand);font-weight:600;font-size:15px;
  border-bottom:1px solid rgba(20,224,200,.35);
  padding:0 2px;
}
.btn-link:hover{border-color:var(--brand);color:#fff}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;transform:none;pointer-events:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:6px;font-size:12px;font-weight:600;
  color:var(--brand);background:rgba(20,224,200,.10);
  border:1px solid rgba(20,224,200,.20);
  white-space:nowrap;
}
.badge-info{color:var(--info);background:rgba(76,141,255,.10);border-color:rgba(76,141,255,.22)}
.tag-num{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:26px;height:22px;padding:0 7px;border-radius:6px;
  background:rgba(255,138,61,.14);color:var(--accent);
  font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,18,.78);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;bottom:-1px;width:120px;height:1px;
  background:linear-gradient(90deg,var(--brand),transparent);
}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--text-1)}
.logo-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-700));
  color:#04140F;font-size:16px;font-weight:800;
  box-shadow:0 0 0 1px rgba(20,224,200,.35),0 6px 18px rgba(20,224,200,.20);
}
.logo-text{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;margin-right:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:68px;padding:0 14px;font-size:15px;font-weight:500;color:var(--text-2);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:16px;width:0;height:2px;border-radius:2px;
  background:var(--brand);transform:translateX(-50%);transition:width var(--t);
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{width:40%}
.nav-link.is-active{color:var(--brand);text-shadow:0 0 12px rgba(20,224,200,.55)}
.nav-link.is-active::after{width:34px;height:3px;bottom:14px;box-shadow:0 0 12px var(--line-glow)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform var(--t),opacity var(--t)}
.nav-toggle span + span{margin-top:0}
.nav-drawer{
  position:fixed;top:0;right:0;z-index:80;width:min(310px,86vw);height:100%;
  background:var(--bg-2);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform 240ms cubic-bezier(.2,.7,.3,1);
  padding:22px 18px;display:flex;flex-direction:column;gap:2px;
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer a{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:8px;
  color:var(--text-2);font-size:15px;font-weight:500;border-bottom:1px solid var(--line);
}
.nav-drawer a:hover{color:var(--text-1);background:rgba(255,255,255,.03)}
.nav-drawer a.is-active{color:var(--brand);box-shadow:inset 3px 0 0 var(--brand)}
.nav-drawer .drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.nav-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.62);z-index:70;
  opacity:0;pointer-events:none;transition:opacity var(--t);
}
.nav-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb .current{color:var(--text-2);max-width:min(560px,70vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:52px 0 40px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(7,11,18,.72),rgba(7,11,18,.94)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(720px 320px at 12% 0%,rgba(20,224,200,.14),transparent 70%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--brand);
  text-transform:none;margin:18px 0 14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--brand),transparent)}
.article-title{
  font-size:clamp(28px,4vw,44px);line-height:1.22;font-weight:800;letter-spacing:-.02em;
  max-width:900px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:20px;
  font-size:13px;color:var(--text-2);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3)}
.meta-row .num{color:var(--text-1);font-weight:600}

/* ---------- 正文区 ---------- */
.article-wrap{padding:56px 0 72px}
.article-layout{max-width:760px;margin:0 auto}
.article-body{
  font-size:17px;line-height:1.95;color:var(--text-1);
}
.article-body p{margin:18px 0;color:#DCE7F7}
.article-body h2{
  position:relative;margin:44px 0 16px;padding-left:16px;
  font-size:clamp(21px,2.2vw,27px);font-weight:700;line-height:1.35;color:var(--text-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;width:3px;height:1em;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px var(--line-glow);
}
.article-body h3{margin:30px 0 12px;font-size:20px;font-weight:600;line-height:1.5;color:var(--text-1)}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:var(--text-1)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(20,224,200,.35)}
.article-body a:hover{color:#fff;border-color:var(--brand)}
.article-body strong{color:#fff;font-weight:700}
.article-body ul,.article-body ol{margin:16px 0 20px;padding-left:0}
.article-body li{position:relative;margin:10px 0;padding-left:22px;color:#DCE7F7}
.article-body ul > li::before{
  content:"";position:absolute;left:4px;top:.75em;width:6px;height:6px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 8px var(--line-glow);
}
.article-body ol{counter-reset:li}
.article-body ol > li::before{
  counter-increment:li;content:counter(li);
  position:absolute;left:0;top:.18em;
  width:18px;height:18px;border-radius:5px;display:grid;place-items:center;
  font-size:11px;font-weight:700;color:var(--accent);background:rgba(255,138,61,.14);
}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;border-left:3px solid var(--brand);
  background:var(--bg-2);border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--text-2);font-size:16px;line-height:1.9;
}
.article-body blockquote p{margin:8px 0;color:var(--text-2)}
.article-body table{
  width:100%;margin:24px 0;border-collapse:collapse;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:rgba(20,224,200,.07);color:var(--brand);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.article-body img{border-radius:12px;margin:22px 0 10px}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;line-height:1.7}
.article-body hr{border:0;height:1px;margin:36px 0;background:linear-gradient(90deg,var(--line),var(--line-glow),var(--line))}

/* ---------- 空态 ---------- */
.empty-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px 28px;text-align:center;box-shadow:var(--sh-1);
}
.empty-icon{
  width:52px;height:52px;border-radius:14px;margin:0 auto 18px;display:grid;place-items:center;
  background:rgba(20,224,200,.10);border:1px solid rgba(20,224,200,.24);
  color:var(--brand);font-size:22px;font-weight:800;
}
.empty-card h2{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-card p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* ---------- 相关推荐 ---------- */
.related{margin-top:56px;padding-top:34px;border-top:1px solid var(--line)}
.related-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px}
.related-head h2{font-size:20px;font-weight:700}
.related-head span{font-size:13px;color:var(--text-3)}
.related-list{display:grid;gap:12px}
.related-item{
  display:flex;align-items:center;gap:16px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--sh-1);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.related-item:hover{border-color:var(--line-glow);transform:translateY(-2px);box-shadow:var(--sh-2)}
.related-item .r-index{
  flex:none;width:30px;height:30px;border-radius:8px;display:grid;place-items:center;
  background:rgba(255,138,61,.14);color:var(--accent);font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.related-item .r-main{min-width:0}
.related-item .r-title{font-size:16px;font-weight:600;line-height:1.6;color:var(--text-1);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.related-item:hover .r-title{color:var(--brand)}
.related-item .r-meta{font-size:13px;color:var(--text-3);margin-top:2px}
.article-foot{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;padding:64px 0;
  background:linear-gradient(180deg,rgba(11,18,32,.92),rgba(7,11,18,.98)),url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-inner{
  display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:center;
  background:rgba(16,26,43,.62);
  border:1px solid var(--line-glow);
  border-radius:var(--r-panel);
  padding:34px 36px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
}
.cta-inner h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.35;margin-bottom:12px}
.cta-inner p{color:var(--text-2);font-size:15px;line-height:1.9}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:#050810;padding:60px 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);opacity:.6;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
  padding-bottom:38px;
}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.9;max-width:340px}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--text-3);margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.contact-line{color:var(--text-2);font-size:14px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--line);padding:20px 0 26px;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 32px}
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr;padding:28px 26px}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-sm{display:none}
  .header-inner{gap:14px}
  .logo{margin-right:auto}
  .article-hero{padding:40px 0 32px}
  .article-wrap{padding:44px 0 58px}
}
@media (max-width:768px){
  .container{padding:0 22px}
  .cta-band{padding:48px 0}
  .related-item{align-items:flex-start}
  .related-item .r-title{white-space:normal}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:30px}
  .footer-brand p{max-width:none}
  .article-body{font-size:16px;line-height:1.9}
  .related{margin-top:42px}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .article-hero{padding:32px 0 26px}
  .article-wrap{padding:36px 0 48px}
  .cta-band{padding:40px 0}
  .cta-inner{padding:24px 20px;border-radius:16px}
  .btn{width:100%}
  .cta-actions .btn,.article-foot .btn{width:100%}
  .related-item{padding:14px}
  .empty-card{padding:32px 18px}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B12;
  --bg-1:#0B1220;
  --bg-2:#101A2B;
  --brand:#14E0C8;
  --brand-700:#06A694;
  --accent:#FF8A3D;
  --info:#4C8DFF;
  --text-1:#EAF2FF;
  --text-2:#A7B6CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(20,224,200,.28);
  --radius-card:14px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-1:0 6px 18px rgba(0,0,0,.35);
  --shadow-2:0 10px 28px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(20,224,200,.28),0 8px 30px rgba(20,224,200,.18);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --pad-section:96px;
  --gap-card:22px;
  --container:1180px;
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","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;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--text-2);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease);}
a:hover{color:var(--brand);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--pad-section) 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,18,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;bottom:-1px;height:1px;width:190px;
  background:linear-gradient(90deg,var(--brand),rgba(20,224,200,0));
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:800;font-size:18px;letter-spacing:.01em;}
.logo:hover{color:var(--text-1);}
.logo-mark{
  width:32px;height:32px;flex:none;border-radius:9px;
  display:grid;place-items:center;
  font-size:16px;font-weight:800;color:#06121A;
  background:linear-gradient(135deg,var(--accent),var(--brand));
  box-shadow:0 0 0 1px rgba(20,224,200,.35),0 6px 18px rgba(20,224,200,.22);
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--text-2);
  border-bottom:3px solid transparent;
  border-radius:6px 6px 0 0;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);opacity:0;transform:scaleX(.4);transform-origin:left center;
  transition:transform var(--ease),opacity var(--ease);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{opacity:.7;transform:scaleX(.4);}
.nav-link.is-active{color:var(--brand);text-shadow:0 0 12px rgba(20,224,200,.55);}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform var(--ease),opacity var(--ease);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  font-size:15px;font-weight:700;border-radius:var(--radius-btn);
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{
  color:#06121A;
  background:linear-gradient(135deg,var(--accent),var(--brand));
  box-shadow:var(--shadow-1);
}
.btn-primary:hover{color:#06121A;transform:translateY(-1px);box-shadow:var(--shadow-glow);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost-outline{
  color:var(--brand);background:transparent;border-color:var(--line-glow);
}
.btn-ghost-outline:hover{color:var(--brand);background:rgba(20,224,200,.12);transform:translateY(-1px);}
.btn-ghost{
  color:var(--text-1);padding:0;background:none;border:0;min-height:44px;
  border-bottom:1px solid transparent;
}
.btn-ghost:hover{color:var(--brand);border-bottom-color:var(--brand);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none;}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,11,18,.96) 8%,rgba(7,11,18,.82) 46%,rgba(7,11,18,.62) 100%);
}
.page-hero__inner{position:relative;padding:76px 0 68px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb span.sep{color:var(--text-3);}
.breadcrumb .current{color:var(--brand);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);background:rgba(20,224,200,.10);
  border:1px solid var(--line-glow);
  margin-bottom:18px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block;}
.page-hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.15;font-weight:800;letter-spacing:-.02em;
  max-width:820px;
}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.page-hero__lead{
  margin-top:18px;max-width:680px;
  font-size:16px;line-height:1.85;color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;
  padding-top:26px;border-top:1px solid var(--line);
}
.hero-meta__item{display:flex;flex-direction:column;gap:2px;}
.hero-meta__num{font-size:26px;font-weight:800;color:var(--brand);line-height:1.2;}
.hero-meta__num small{font-size:13px;font-weight:600;color:var(--text-2);margin-left:3px;}
.hero-meta__label{font-size:13px;color:var(--text-3);}

/* ============ 数据带 ============ */
.stat-band{border-bottom:1px solid var(--line);background:var(--bg-0);}
.stat-band__inner{
  display:grid;grid-template-columns:repeat(4,1fr);
  padding:38px 0;gap:0;
}
.stat-item{padding:0 26px;border-left:1px solid var(--line);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-item__track{
  width:46px;height:2px;border-radius:2px;margin-bottom:14px;
  background:linear-gradient(90deg,var(--brand),rgba(20,224,200,0));
}
.stat-item__value{font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.15;color:var(--text-1);}
.stat-item__value small{font-size:13px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat-item__label{margin-top:6px;font-size:14px;color:var(--text-2);}

/* ============ 通用板块标题 ============ */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:38px;}
.section-head__text{max-width:700px;}
.section-head h2{
  font-size:clamp(23px,3vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em;
}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;}
.section-head .more-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.section-head .more-link:hover{border-bottom-color:var(--brand);}

/* ============ 交错图文 ============ */
.feature-stack{display:flex;flex-direction:column;gap:56px;}
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
}
.feature-row.is-reverse .feature-row__media{order:-1;}
.feature-row__media{
  position:relative;border-radius:16px;overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.feature-row__media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-row__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,18,.04),rgba(7,11,18,.36));
  pointer-events:none;
}
.feature-row:hover .feature-row__media{border-color:var(--line-glow);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.feature-row__body{padding-right:6px;}
.feature-row__index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:26px;padding:0 9px;border-radius:6px;
  font-size:12px;font-weight:700;color:#06121A;
  background:linear-gradient(135deg,var(--accent),#ffb37a);
  margin-bottom:16px;
}
.feature-row h3{font-size:22px;font-weight:700;line-height:1.4;}
.feature-row p{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.9;max-width:540px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:6px;
  font-size:12px;font-weight:600;
  color:var(--brand);background:rgba(20,224,200,.10);
  border:1px solid rgba(20,224,200,.16);
}
.tag--info{color:#9CC0FF;background:rgba(76,141,255,.12);border-color:rgba(76,141,255,.22);}
.feature-row__foot{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  margin-top:22px;font-size:13px;color:var(--text-3);
}
.feature-row__foot .mini-link{color:var(--brand);font-weight:600;border-bottom:1px solid transparent;}
.feature-row__foot .mini-link:hover{border-bottom-color:var(--brand);}

/* ============ 主题标签板块 ============ */
.topic-board{
  display:grid;grid-template-columns:1.1fr .9fr;gap:var(--gap-card);
}
.topic-board__main,.topic-board__side{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px;transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.topic-board__main:hover,.topic-board__side:hover{border-color:var(--line-glow);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.topic-board h3{font-size:20px;margin-bottom:14px;}
.topic-board p{color:var(--text-2);font-size:15px;}
.topic-list{display:flex;flex-direction:column;gap:14px;margin-top:20px;}
.topic-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;border-radius:10px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  transition:border-color var(--ease),background-color var(--ease);
}
.topic-list li:hover{border-color:var(--line-glow);background:rgba(20,224,200,.06);}
.topic-list b{color:var(--accent);font-size:13px;font-weight:800;min-width:26px;line-height:1.6;}
.topic-list span{font-size:15px;color:var(--text-1);line-height:1.7;}
.topic-list em{display:block;font-style:normal;font-size:13px;color:var(--text-3);margin-top:2px;}
.side-box{
  border-radius:var(--radius-card);padding:22px;
  background:rgba(255,255,255,.035);
  border:1px solid var(--line-glow);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  margin-bottom:var(--gap-card);
}
.side-box h4{font-size:15px;color:var(--brand);margin-bottom:10px;}
.side-box p{font-size:14px;color:var(--text-2);line-height:1.8;}
.score-strip{display:flex;align-items:center;gap:14px;margin-top:16px;}
.score-strip .team{font-size:14px;color:var(--text-2);}
.score-strip .score{
  font-size:24px;font-weight:800;color:var(--accent);
  letter-spacing:.04em;
}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.85fr 1.6fr;gap:48px;align-items:start;}
.faq-aside{
  position:sticky;top:96px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;
}
.faq-aside h2{font-size:clamp(22px,2.6vw,28px);line-height:1.3;}
.faq-aside p{margin-top:12px;font-size:14px;color:var(--text-2);}
.faq-aside .btn{margin-top:22px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color var(--ease);
}
.faq-item:hover{border-color:var(--line-glow);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:15px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .marker{
  flex:none;width:24px;height:24px;border-radius:7px;
  display:grid;place-items:center;font-size:14px;font-weight:700;
  color:var(--brand);background:rgba(20,224,200,.10);
  border:1px solid rgba(20,224,200,.2);
  transition:transform var(--ease),color var(--ease);
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary .marker{transform:rotate(45deg);}
.faq-item__body{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--text-2);border-top:1px solid var(--line);padding-top:16px;}

/* ============ 相关文章按钮区 ============ */
.related-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:30px 32px;border-radius:var(--radius-panel);
  background:var(--bg-1);border:1px solid var(--line);
}
.related-cta h3{font-size:20px;}
.related-cta p{margin-top:8px;color:var(--text-2);font-size:14px;}
.related-cta__actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ CTA 表单 ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(20,224,200,0),var(--brand),rgba(20,224,200,0));
  opacity:.6;
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.cta-copy h2{font-size:clamp(23px,3vw,32px);line-height:1.3;}
.cta-copy p{margin-top:16px;color:var(--text-2);font-size:15px;max-width:520px;}
.cta-points{display:flex;flex-direction:column;gap:12px;margin-top:26px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);}
.cta-points li::before{
  content:"";flex:none;width:7px;height:7px;margin-top:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px rgba(20,224,200,.8);
}
.form-panel{
  border-radius:var(--radius-panel);padding:30px;
  background:rgba(16,26,43,.72);
  border:1px solid var(--line-glow);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-1);
}
.form-panel h3{font-size:18px;margin-bottom:20px;}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.form-field input,.form-field textarea{
  width:100%;padding:12px 14px;border-radius:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text-1);font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-3);}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(20,224,200,.16);
  background:rgba(255,255,255,.06);
}
.form-field textarea{resize:vertical;min-height:88px;}
.form-panel .btn{width:100%;}
.form-hint{margin-top:14px;font-size:12px;color:var(--text-3);line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:#050810;
  border-top:1px solid var(--line);
  padding:64px 0 26px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(20,224,200,0),rgba(20,224,200,.7),rgba(20,224,200,0));
  opacity:.5;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:360px;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-col .contact-line{font-size:14px;color:var(--text-2);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 移动端抽屉 ============ */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;
  background:var(--bg-2);border-left:1px solid var(--line);
  z-index:80;padding:22px 0;
  transform:translateX(102%);transition:transform var(--ease);
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 18px;border-bottom:1px solid var(--line);}
.drawer__close{width:44px;height:44px;border-radius:10px;border:1px solid var(--line);color:var(--text-1);font-size:20px;line-height:1;}
.drawer__links{display:flex;flex-direction:column;padding:8px 0;}
.drawer__links a{
  display:flex;align-items:center;min-height:52px;padding:0 20px;
  font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line);
  border-left:3px solid transparent;
}
.drawer__links a:hover{color:var(--text-1);background:rgba(255,255,255,.03);}
.drawer__links a.is-active{
  color:var(--brand);border-left-color:var(--brand);
  background:rgba(20,224,200,.07);
  text-shadow:0 0 12px rgba(20,224,200,.45);
}
.drawer__foot{padding:20px;margin-top:auto;}
.drawer__foot .btn{width:100%;}
.scrim{
  position:fixed;inset:0;background:rgba(4,7,12,.66);
  z-index:70;opacity:0;pointer-events:none;transition:opacity var(--ease);
}
.scrim.is-open{opacity:1;pointer-events:auto;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  :root{--pad-section:64px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .topic-board{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-primary{display:none;}
  .feature-row{grid-template-columns:1fr;gap:24px;}
  .feature-row.is-reverse .feature-row__media{order:0;}
  .stat-band__inner{grid-template-columns:repeat(2,1fr);gap:26px 0;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
}
@media (max-width:768px){
  :root{--pad-section:64px;--gap-card:18px;}
  .section--tight{padding:52px 0;}
  .page-hero__inner{padding:56px 0 48px;}
  .hero-meta{gap:22px;}
  .section-head{margin-bottom:28px;}
  .feature-stack{gap:44px;}
  .related-cta{padding:24px;}
  .form-panel{padding:24px;}
}
@media (max-width:560px){
  :root{--pad-section:44px;--gap-card:16px;}
  .container{padding:0 20px;}
  .stat-band__inner{grid-template-columns:1fr;gap:22px;}
  .stat-item{border-left:0;padding:0;}
  .hero-actions{gap:12px;}
  .btn{width:100%;}
  .hero-actions .btn,.related-cta__actions .btn{width:100%;}
  .btn-ghost{width:auto;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category2 */
:root{
  --bg-0:#070B12;
  --bg-1:#0B1220;
  --bg-2:#101A2B;
  --brand:#14E0C8;
  --brand-700:#06A694;
  --accent:#FF8A3D;
  --info:#4C8DFF;
  --text-1:#EAF2FF;
  --text-2:#A7B6CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.08);
  --glow-line:rgba(20,224,200,.28);
  --r-card:14px;
  --r-panel:20px;
  --r-btn:10px;
  --shadow-1:0 6px 18px rgba(0,0,0,.35);
  --shadow-2:0 10px 28px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(20,224,200,.28),0 8px 30px rgba(20,224,200,.18);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","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;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(20,224,200,.28);color:#fff}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(7,11,18,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";display:block;height:1px;width:120px;
  background:linear-gradient(90deg,var(--brand),rgba(20,224,200,0));
  margin-top:-1px;
}
.nav-wrap{display:flex;align-items:center;gap:26px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:.02em;flex:0 0 auto}
.logo-mark{
  width:32px;height:32px;display:grid;place-items:center;
  border-radius:9px;font-size:16px;font-weight:800;color:#06121A;
  background:linear-gradient(135deg,var(--accent),var(--brand));
  box-shadow:0 0 0 1px rgba(20,224,200,.35);
}
.logo span:last-child{color:var(--text-1)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;font-size:15px;font-weight:500;color:var(--text-2);
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:6px;height:3px;width:0;border-radius:3px;
  background:var(--brand);transform:translateX(-50%);transition:width var(--ease);
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{width:40%}
.nav-link.is-active{color:var(--brand);text-shadow:0 0 12px rgba(20,224,200,.65)}
.nav-link.is-active::after{width:56%}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform var(--ease),opacity var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:120;
  background:var(--bg-2);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform 240ms cubic-bezier(.2,.7,.3,1);
  padding:84px 20px 32px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer a{
  display:flex;align-items:center;min-height:52px;padding:0 12px;
  font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);
  border-left:3px solid transparent;transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.nav-drawer a:hover{color:var(--text-1);background:rgba(255,255,255,.03)}
.nav-drawer a.is-active{
  color:var(--brand);border-left-color:var(--brand);
  background:rgba(20,224,200,.06);box-shadow:inset 3px 0 12px rgba(20,224,200,.22);
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,7,12,.7);z-index:110;
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;letter-spacing:.02em;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  color:#06121A;background:linear-gradient(135deg,var(--accent),var(--brand));
  box-shadow:var(--shadow-1);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow)}
.btn-ghostline{
  color:var(--brand);background:transparent;border:1px solid var(--glow-line);
}
.btn-ghostline:hover{background:rgba(20,224,200,.12);transform:translateY(-1px)}
.btn-plain{
  color:var(--text-2);padding:0 6px;min-height:44px;font-weight:600;
  border-bottom:1px solid transparent;border-radius:0;
}
.btn-plain:hover{color:var(--brand);border-bottom-color:var(--glow-line)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:6px;font-size:12px;font-weight:600;line-height:1.7;
  color:var(--brand);background:rgba(20,224,200,.10);border:1px solid rgba(20,224,200,.18);
}
.badge-info{color:var(--info);background:rgba(76,141,255,.12);border-color:rgba(76,141,255,.22)}
.badge-accent{color:var(--accent);background:rgba(255,138,61,.12);border-color:rgba(255,138,61,.24)}
.chip{
  display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:0 16px;
  border-radius:999px;font-size:14px;color:var(--text-2);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.chip:hover{color:var(--text-1);border-color:rgba(255,255,255,.18)}
.chip.is-active{
  color:#06121A;font-weight:700;border-color:transparent;
  background:linear-gradient(135deg,var(--accent),var(--brand));
}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumb a{color:var(--text-2);transition:color var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--text-3);opacity:.6}

/* ---------- 分类页头 ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  padding:64px 0 56px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.30;filter:saturate(.85);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,18,.72) 0%,rgba(7,11,18,.92) 62%,var(--bg-0) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero h1{
  margin:18px 0 14px;font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:800;
}
.cat-hero h1 em{font-style:normal;color:var(--brand);text-shadow:0 0 24px rgba(20,224,200,.35)}
.cat-hero .lead{max-width:720px;font-size:16px;line-height:1.9;color:var(--text-2)}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.meta-card{
  display:flex;align-items:center;gap:10px;padding:10px 16px;border-radius:12px;
  background:rgba(16,26,43,.66);border:1px solid var(--line);backdrop-filter:blur(10px);
  font-size:13px;color:var(--text-2);
}
.meta-card b{font-size:18px;color:var(--text-1)}
.meta-card b.hl{color:var(--accent)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px}
.section-head h2{font-size:clamp(23px,3vw,34px);font-weight:700}
.section-head .sub{margin-top:10px;max-width:640px;font-size:15px;color:var(--text-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.16em;color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:28px;height:1px;background:linear-gradient(90deg,var(--brand),rgba(20,224,200,0))}
.runway{height:1px;width:96px;background:linear-gradient(90deg,var(--brand),rgba(20,224,200,0));border-radius:1px}

/* ---------- 筛选条 ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:16px 18px;border-radius:var(--r-card);
  background:var(--bg-1);border:1px solid var(--line);margin-bottom:30px;
}
.filter-bar .filter-label{font-size:13px;color:var(--text-3);margin-right:4px}
.filter-bar .spacer{flex:1 1 auto}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);background:var(--bg-2);border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--glow-line);box-shadow:var(--shadow-2)}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,18,0) 40%,rgba(7,11,18,.75) 100%);
}
.card-thumb .thumb-badge{position:absolute;left:12px;top:12px;z-index:2}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.card-body h3{font-size:19px;font-weight:600;line-height:1.45}
.card:hover .card-body h3{color:var(--brand)}
.card-body p{
  font-size:15px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}
.card-foot .dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--brand);margin-right:8px;vertical-align:middle}

/* ---------- 评分条 ---------- */
.rating{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.rating .track{position:relative;flex:1 1 auto;height:6px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;min-width:70px}
.rating .track i{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.rating b{color:var(--text-1);font-size:14px}

/* ---------- 图文交错 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.split.reverse .split-media{order:-1}
.split-media{position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split-media .glass-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  padding:10px 14px;border-radius:12px;font-size:13px;color:var(--text-2);
  background:rgba(16,26,43,.62);border:1px solid var(--glow-line);backdrop-filter:blur(10px);
}
.split-text h3{font-size:26px;font-weight:700;margin-bottom:14px}
.split-text p{font-size:16px;color:var(--text-2);line-height:1.9}
.split-list{margin-top:20px;display:grid;gap:12px}
.split-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2)}
.split-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(20,224,200,.6);
}
.quote{
  margin:26px 0 0;padding:20px 22px;border-left:3px solid var(--brand);
  background:var(--bg-2);border-radius:0 var(--r-card) var(--r-card) 0;
  font-size:15px;color:var(--text-2);line-height:1.9;
}

/* ---------- 专题目录 ---------- */
.toc-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.toc-item{
  padding:22px;border-radius:var(--r-card);background:var(--bg-1);border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.toc-item:hover{border-color:var(--glow-line);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.toc-item .idx{
  display:inline-grid;place-items:center;width:30px;height:30px;border-radius:8px;
  font-size:13px;font-weight:800;color:#06121A;
  background:linear-gradient(135deg,var(--accent),var(--brand));margin-bottom:14px;
}
.toc-item h4{font-size:17px;font-weight:600;margin-bottom:8px}
.toc-item p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
.faq-list{display:grid;gap:12px}
.faq-item{
  border-radius:var(--r-card);background:var(--bg-2);border:1px solid var(--line);
  overflow:hidden;transition:border-color var(--ease);
}
.faq-item[open]{border-color:var(--glow-line)}
.faq-item summary{
  display:flex;align-items:center;gap:14px;min-height:56px;padding:16px 20px;
  font-size:15px;font-weight:600;color:var(--text-1);cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";margin-left:auto;font-size:20px;color:var(--brand);transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- 入口带 ---------- */
.entry-band{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
  padding:26px;border-radius:var(--r-panel);background:var(--bg-1);border:1px solid var(--line);
}
.entry-band a{
  display:flex;flex-direction:column;gap:6px;padding:18px;border-radius:var(--r-card);
  background:var(--bg-2);border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease);
}
.entry-band a:hover{border-color:var(--glow-line);transform:translateY(-2px)}
.entry-band a strong{font-size:16px;font-weight:600}
.entry-band a span{font-size:13px;color:var(--text-3)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  border:1px solid var(--glow-line);
  background:linear-gradient(135deg,rgba(16,26,43,.92),rgba(11,18,32,.92));
  backdrop-filter:blur(12px);
  padding:44px;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  box-shadow:var(--shadow-1);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;opacity:.12;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(23px,3vw,32px);font-weight:700;margin-bottom:14px}
.cta-band p{font-size:15px;color:var(--text-2)}
.form-grid{display:grid;gap:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{min-height:84px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(20,224,200,.16);background:rgba(255,255,255,.06);
}
.form-note{font-size:13px;color:var(--text-3)}
.form-msg{font-size:14px;color:var(--brand);min-height:22px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;background:#050810;border-top:1px solid var(--line);
  position:relative;padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,rgba(20,224,200,0),var(--brand),rgba(20,224,200,0));
  opacity:.6;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.9;max-width:340px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text-1)}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.contact-line{font-size:14px;color:var(--text-2);transition:color var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 32px}
}
@media (max-width:1024px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .toc-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{grid-template-columns:1fr;gap:28px}
  .split{grid-template-columns:1fr;gap:28px}
  .split.reverse .split-media{order:0}
  .faq-layout{grid-template-columns:1fr;gap:28px}
}
@media (max-width:900px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
}
@media (max-width:768px){
  .card-grid{grid-template-columns:1fr}
  .toc-grid{grid-template-columns:1fr}
  .entry-band{grid-template-columns:1fr}
  .cat-hero{padding:44px 0 40px}
  .cta-band{padding:28px}
  .btn-block-mobile{width:100%}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .section{padding:44px 0}
  .section-tight{padding:40px 0}
  .card-grid{gap:16px}
  .card-body{padding:16px}
  .footer-grid{grid-template-columns:1fr}
  .filter-bar{padding:14px}
  .hero-meta{gap:8px}
  .meta-card{padding:9px 12px}
}

/* roulang page: category3 */
:root{
  --bg-0:#070B12;
  --bg-1:#0B1220;
  --bg-2:#101A2B;
  --brand:#14E0C8;
  --brand-700:#06A694;
  --accent:#FF8A3D;
  --info:#4C8DFF;
  --text-1:#EAF2FF;
  --text-2:#A7B6CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(20,224,200,.28);
  --r-card:14px;
  --r-panel:20px;
  --r-btn:10px;
  --sh-1:0 6px 18px rgba(0,0,0,.35);
  --sh-2:0 10px 28px rgba(0,0,0,.45);
  --sh-glow:0 0 0 1px rgba(20,224,200,.28),0 8px 30px rgba(20,224,200,.18);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --maxw:1180px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","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;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-0);
  background-image:radial-gradient(900px 420px at 12% -8%,rgba(20,224,200,.10),transparent 60%),radial-gradient(760px 380px at 92% 4%,rgba(76,141,255,.08),transparent 62%);
  background-repeat:no-repeat;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
h1{font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(23px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:16px;font-weight:600;}
.num,.tabular{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--brand),transparent);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap;}
.section-head p{color:var(--text-2);font-size:15px;max-width:620px;margin-top:10px;}
.text-link{color:var(--brand);font-size:14px;font-weight:600;border-bottom:1px solid rgba(20,224,200,.35);padding-bottom:2px;}
.text-link:hover{color:#7ff4e6;border-color:#7ff4e6;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border:1px solid transparent;
  border-radius:var(--r-btn);font-size:15px;font-weight:700;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--brand));color:#06121A;box-shadow:var(--sh-1);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-glow);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-outline{background:transparent;border-color:var(--line-glow);color:var(--brand);}
.btn-outline:hover{background:rgba(20,224,200,.12);transform:translateY(-1px);}
.btn-ghost{background:transparent;border:0;color:var(--text-2);padding:0 4px;position:relative;}
.btn-ghost::after{content:"";position:absolute;left:4px;right:4px;bottom:6px;height:1px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);}
.btn-ghost:hover{color:var(--brand);}
.btn-ghost:hover::after{transform:scaleX(1);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}

/* ---------- 标签徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 9px;border-radius:6px;background:rgba(20,224,200,.10);color:var(--brand);}
.badge--info{background:rgba(76,141,255,.12);color:#9CC0FF;}
.badge--accent{background:rgba(255,138,61,.14);color:var(--accent);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,18,.78);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:linear-gradient(90deg,transparent 0%,transparent 42%,var(--brand) 62%,transparent 78%,transparent 100%);
  opacity:.7;pointer-events:none;
}
.header-inner{display:flex;align-items:center;gap:28px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:.01em;color:var(--text-1);}
.logo:hover{color:var(--text-1);}
.logo-mark{
  width:32px;height:32px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(20,224,200,.22),rgba(255,138,61,.22));
  border:1px solid var(--line-glow);color:var(--brand);font-size:16px;font-weight:800;
  box-shadow:0 0 14px rgba(20,224,200,.22);
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--text-2);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:12px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform var(--ease);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:scaleX(.4);}
.nav-link.is-active{color:var(--brand);text-shadow:0 0 12px rgba(20,224,200,.55);}
.nav-link.is-active::after{transform:scaleX(1);height:3px;}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:rgba(255,255,255,.03);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text-1);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}
.drawer{
  position:fixed;top:68px;right:0;bottom:0;width:min(320px,86vw);
  background:var(--bg-2);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform var(--ease);z-index:55;
  padding:18px 0 40px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer a{
  display:flex;align-items:center;min-height:52px;padding:0 24px;font-size:15px;
  color:var(--text-2);border-bottom:1px solid var(--line);border-left:3px solid transparent;
}
.drawer a:hover{color:var(--text-1);background:rgba(255,255,255,.03);}
.drawer a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(20,224,200,.06);box-shadow:inset 0 0 18px rgba(20,224,200,.10);}
.drawer-cta{padding:20px 24px 0;}
.drawer-cta .btn{width:100%;}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.page-hero__bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center;opacity:.32;}
.page-hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,18,.55) 0%,rgba(7,11,18,.86) 62%,var(--bg-0) 100%);}
.page-hero__inner{position:relative;padding:78px 0 74px;}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs span.dot{color:var(--text-3);}
.page-hero h1{margin-bottom:18px;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.page-hero__lead{max-width:660px;color:var(--text-2);font-size:16px;}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
.hero-stat{min-width:150px;}
.hero-stat b{display:block;font-size:28px;font-weight:800;color:var(--brand);line-height:1.2;}
.hero-stat b .unit{font-size:14px;color:var(--text-2);font-weight:600;margin-left:4px;}
.hero-stat span{font-size:13px;color:var(--text-3);}

/* ---------- 主体双栏 ---------- */
.rank-layout{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.toc{position:sticky;top:96px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 20px;box-shadow:var(--sh-1);}
.toc h2{font-size:16px;font-weight:700;letter-spacing:.02em;margin-bottom:6px;}
.toc p{font-size:13px;color:var(--text-3);margin-bottom:16px;}
.toc ol{display:flex;flex-direction:column;gap:2px;}
.toc li a{
  display:block;padding:11px 12px;border-radius:10px;border-left:2px solid transparent;
  color:var(--text-2);font-size:15px;line-height:1.5;
}
.toc li a small{display:block;font-size:12px;color:var(--text-3);margin-top:2px;}
.toc li a:hover{background:rgba(20,224,200,.08);color:var(--text-1);border-left-color:var(--brand);}
.toc-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);}

.block-head{margin-bottom:22px;}
.block-head h3{display:flex;align-items:center;gap:10px;}
.block-head h3::before{content:"";width:3px;height:18px;border-radius:3px;background:var(--brand);box-shadow:0 0 12px rgba(20,224,200,.6);}
.block-head p{font-size:14px;color:var(--text-3);margin-top:6px;}

.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:linear-gradient(180deg,rgba(20,224,200,.5),rgba(255,255,255,.06) 70%,transparent);}
.tl-item{position:relative;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:22px;width:11px;height:11px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--brand);box-shadow:0 0 0 4px rgba(20,224,200,.10);
}
.tl-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.tl-card:hover{border-color:var(--line-glow);transform:translateY(-2px);box-shadow:var(--sh-2);}
.tl-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px;}
.tl-time{font-size:13px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.tl-card h4{font-size:17px;font-weight:600;line-height:1.6;color:var(--text-1);}
.tl-card:hover h4{color:var(--brand);}
.tl-card p{font-size:14px;color:var(--text-2);margin-top:6px;}

/* ---------- 图文阅读板块 ---------- */
.read-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.read-grid.reverse .read-media{order:2;}
.read-media{position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);}
.read-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;}
.read-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,18,.12),rgba(7,11,18,.42));}
.read-copy .idx{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.16em;font-variant-numeric:tabular-nums;}
.read-copy h3{margin:12px 0 12px;font-size:22px;}
.read-copy p{color:var(--text-2);font-size:15.5px;}
.read-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.read-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);}
.read-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:10px;border-radius:2px;background:var(--brand);}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:22px;}
.scene{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;transition:border-color var(--ease),transform var(--ease);
}
.scene:hover{border-color:var(--line-glow);transform:translateY(-2px);}
.scene .badge{margin-bottom:14px;}
.scene h3{font-size:18px;margin-bottom:8px;}
.scene p{font-size:14.5px;color:var(--text-2);}
.scene--wide{background:linear-gradient(150deg,rgba(20,224,200,.10),rgba(16,26,43,.9));border-color:var(--line-glow);box-shadow:var(--sh-glow);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.faq-side h2{margin-bottom:12px;}
.faq-side p{color:var(--text-2);font-size:15px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color var(--ease);}
.faq-item[open]{border-color:var(--line-glow);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 20px;font-size:15px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:10px;height:10px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform var(--ease);margin-top:-4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:4px;}
.faq-item summary:hover{color:var(--brand);}
.faq-body{padding:0 20px 18px;font-size:15px;line-height:1.85;color:var(--text-2);border-top:1px solid var(--line);padding-top:14px;margin-top:0;}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1);}
.cta-band__bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-3.png");background-size:cover;background-position:center;opacity:.16;}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:78px 0;}
.cta-copy h2{margin-bottom:14px;}
.cta-copy p{color:var(--text-2);font-size:15.5px;}
.cta-points{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);}
.cta-points li::before{content:"";flex:0 0 auto;width:16px;height:16px;margin-top:6px;border-radius:50%;background:rgba(20,224,200,.16);box-shadow:inset 0 0 0 1px var(--line-glow);}
.form-panel{
  background:linear-gradient(150deg,rgba(255,255,255,.06),rgba(16,26,43,.82));
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid var(--line);border-radius:var(--r-panel);padding:30px 28px;box-shadow:var(--sh-1);
}
.form-panel h3{font-size:18px;margin-bottom:6px;}
.form-panel .hint{font-size:13px;color:var(--text-3);margin-bottom:18px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px;}
.field input,.field textarea,.field select{
  width:100%;min-height:44px;padding:10px 14px;font-size:15px;color:var(--text-1);
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{min-height:88px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand);background:rgba(20,224,200,.06);
  box-shadow:0 0 0 3px rgba(20,224,200,.14);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.form-panel .btn{width:100%;margin-top:6px;}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.7;}
.form-error{display:none;font-size:13px;color:#FF6B6B;margin-top:6px;}
.form-error.is-show{display:block;}

/* ---------- 底部返回 ---------- */
.back-top-row{display:flex;justify-content:center;padding:56px 0 0;}
.back-top-row .btn-ghost{font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:#050810;border-top:1px solid var(--line);padding:72px 0 28px;margin-top:96px;}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(20,224,200,.55),rgba(255,138,61,.4),transparent);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:340px;line-height:1.85;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.contact-line{font-size:14px;color:var(--text-2);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  .rank-layout{grid-template-columns:1fr;gap:32px;}
  .toc{position:static;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .scene-grid{grid-template-columns:1fr 1fr;}
  .scene--wide{grid-column:1 / -1;}
  .section{padding:64px 0;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-primary{display:none;}
  .cta-inner{grid-template-columns:1fr;gap:34px;padding:64px 0;}
  .read-grid{grid-template-columns:1fr;gap:26px;}
  .read-grid.reverse .read-media{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section--tight{padding:48px 0;}
  .page-hero__inner{padding:52px 0 50px;}
  .hero-stats{gap:24px;}
  .scene-grid{grid-template-columns:1fr;}
  .header-inner{height:64px;}
  .drawer{top:64px;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{margin-top:64px;padding-top:52px;}
}
@media (max-width:560px){
  .section{padding:44px 0;}
  .page-hero__inner{padding:44px 0 40px;}
  .btn{width:100%;}
  .header-actions .btn-sm{width:auto;}
  .form-panel{padding:24px 18px;}
  .tl-card{padding:16px 16px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .back-top-row .btn{width:auto;}
}