/* roulang page: index */
:root{
  --ink:#0E1014;
  --ink-2:#2A2E36;
  --text:#5B6270;
  --muted:#9AA0AB;
  --line:#E6E3DE;
  --bg:#F7F5F2;
  --card:#FFFFFF;
  --violet:#5B3DF5;
  --violet-hover:#6E52FF;
  --violet-soft:#EFEBFF;
  --teal:#12B5A0;
  --teal-soft:#E4F6F3;
  --ok:#1F9D6B;
  --warn:#C97B1E;
  --err:#C2443B;
  --r-sm:6px;
  --r-md:12px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,16,20,.05);
  --sh-2:0 8px 24px -12px rgba(14,16,20,.16);
  --sh-3:0 24px 60px -28px rgba(14,16,20,.28);
  --ring:0 0 0 3px rgba(91,61,245,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",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(--sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--serif);
  color:var(--ink);
  font-weight:700;
  line-height:1.22;
  letter-spacing:-.015em;
  margin:0;
}
p{margin:0 0 1.1em;text-align:left;}
p:last-child{margin-bottom:0;}
a{color:var(--violet);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--violet-hover);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:var(--ring);border-radius:var(--r-sm);}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-alt{background:#FFFFFF;}
.section-soft{background:var(--violet-soft);}

.eyebrow{
  display:inline-block;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--teal);
  margin-bottom:14px;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
  flex-wrap:wrap;
}
.section-head h2{font-size:clamp(24px,3vw,32px);}
.section-head p{margin-top:12px;max-width:620px;font-size:16px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-md);
  padding:14px 26px;
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--violet);color:#fff;}
.btn-primary:hover{background:var(--violet-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0) scale(.98);}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0) scale(.98);}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.45);color:#fff;}
.btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--violet);
  position:relative;
}
.link-arrow::after{
  content:"";position:absolute;left:0;right:18px;bottom:-3px;height:1px;
  background:var(--violet);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow span{transition:transform .2s var(--ease);}
.link-arrow:hover span{transform:translateX(3px);}

/* ---------- 标签与徽章 ---------- */
.chip{
  display:inline-flex;align-items:center;
  height:26px;padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  white-space:nowrap;
}
.chip-teal{background:var(--teal-soft);color:var(--teal);}
.chip-violet{background:var(--violet-soft);color:var(--violet);}
.chip-ink{background:var(--ink);color:#fff;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 28px -22px rgba(14,16,20,.55);}
.header-inner{
  max-width:1240px;margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-family:var(--serif);font-size:13px;font-weight:700;letter-spacing:.02em;
}
.brand-text{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:-.01em;}

.nav-search{
  position:relative;display:flex;align-items:center;
  flex:1 1 auto;max-width:460px;min-width:180px;
  height:44px;background:var(--bg);
  border:1px solid transparent;border-radius:var(--r-pill);
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{background:#fff;border-color:var(--violet);box-shadow:var(--ring);}
.nav-search .search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted);display:grid;place-items:center;pointer-events:none;}
.nav-search input{
  flex:1 1 auto;height:42px;border:0;background:transparent;outline:none;
  padding:0 8px 0 46px;font-size:15px;color:var(--ink);font-family:inherit;
  min-width:0;
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search .search-btn{
  height:32px;padding:0 16px;margin-right:6px;
  border:0;border-radius:var(--r-pill);
  background:var(--violet);color:#fff;font-size:13px;font-weight:600;cursor:pointer;
  opacity:0;pointer-events:none;transition:opacity .2s var(--ease),background .2s var(--ease);
}
.nav-search:focus-within .search-btn{opacity:1;pointer-events:auto;}
.nav-search .search-btn:hover{background:var(--violet-hover);}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;flex:0 0 auto;}
.main-nav a{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:15px;color:var(--ink-2);white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.main-nav a:hover{color:var(--violet);background:var(--violet-soft);}
.main-nav a.is-active{color:var(--violet);font-weight:600;}
.main-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--violet);
}
.nav-cta{flex:0 0 auto;}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;cursor:pointer;padding:0;place-items:center;color:var(--ink);
}
.menu-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;margin:0 auto;}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:120;background:#fff;
  transform:translateY(-102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:20px 24px 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-search{position:relative;display:flex;align-items:center;height:48px;background:var(--bg);border-radius:var(--r-pill);margin-bottom:20px;}
.drawer-search input{flex:1;height:46px;border:0;background:transparent;outline:none;padding:0 18px 0 44px;font-size:15px;color:var(--ink);min-width:0;}
.drawer-search .search-icon{position:absolute;left:16px;color:var(--muted);}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;padding:0 4px;font-size:17px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--violet);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:24px;}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;padding:104px 0 92px;}
.hero-media{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  opacity:.6;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,16,20,.94) 0%,rgba(14,16,20,.78) 42%,rgba(14,16,20,.46) 100%);
}
.hero-inner{position:relative;z-index:2;}
.hero-copy{max-width:680px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  font-size:12.5px;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.86);
  margin-bottom:22px;
}
.hero-title{
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.24;color:#fff;letter-spacing:-.02em;
  clip-path:inset(0 0 100% 0);
  animation:heroIn .7s var(--ease) .05s forwards;
}
@keyframes heroIn{to{clip-path:inset(0 0 -12% 0);}}
.hero-sub{
  margin-top:20px;font-size:18px;color:rgba(255,255,255,.82);
  max-width:520px;line-height:1.7;text-align:left;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;}
.hero-stats{
  display:flex;gap:48px;flex-wrap:wrap;
  margin-top:52px;padding-top:28px;border-top:1px solid rgba(255,255,255,.16);
}
.hero-stats li{display:flex;flex-direction:column;gap:2px;}
.hero-stats strong{
  font-family:var(--serif);font-size:32px;font-weight:700;color:#fff;
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.hero-stats span{font-size:13.5px;color:rgba(255,255,255,.62);}

/* ---------- 功能分组 ---------- */
.split{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:64px;}
.split-aside h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:20px;}
.split-aside p{font-size:16.5px;margin-bottom:16px;}
.split-aside .link-arrow{margin-top:12px;}
.feature-row{
  position:relative;display:flex;gap:20px;
  padding:26px 22px;border-top:1px solid var(--line);
  transition:background .22s var(--ease),padding .22s var(--ease);
}
.feature-row:last-child{border-bottom:1px solid var(--line);}
.feature-row::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;
  border-radius:3px;background:var(--violet);opacity:0;
  transition:opacity .22s var(--ease);
}
.feature-row:hover{background:var(--violet-soft);}
.feature-row:hover::before{opacity:1;}
.feature-icon{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;
  background:#fff;border:1px solid var(--line);color:var(--violet);
  display:grid;place-items:center;
}
.feature-row h3{font-size:19px;margin-bottom:6px;}
.feature-row p{font-size:15px;margin:0;color:var(--text);}

/* ---------- 场景轨道 ---------- */
.track-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.track-nav{display:flex;gap:10px;}
.track-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:18px;cursor:pointer;
  display:grid;place-items:center;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.track-btn:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px);}
.track{
  display:flex;gap:20px;overflow-x:auto;padding:4px 2px 22px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.track::-webkit-scrollbar{height:6px;}
.track::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.scene-card{
  flex:0 0 31%;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.3);}
.scene-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--violet-soft);}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .38s var(--ease);}
.scene-card:hover .scene-thumb img{transform:scale(1.03);}
.scene-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.scene-body h3{font-size:19px;}
.scene-body p{font-size:15px;margin:0;}
.scene-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:6px;}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px;}
.case-feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .24s var(--ease);
}
.case-feature:hover{box-shadow:var(--sh-2);}
.case-media{aspect-ratio:16/9;overflow:hidden;background:var(--violet-soft);}
.case-media img{width:100%;height:100%;object-fit:cover;}
.case-body{padding:28px 28px 30px;display:flex;flex-direction:column;gap:14px;}
.metric{display:flex;align-items:baseline;gap:10px;}
.metric strong{
  font-family:var(--serif);font-size:42px;font-weight:700;color:var(--violet);
  line-height:1;font-variant-numeric:tabular-nums;
}
.metric span{font-size:14px;color:var(--muted);}
.case-body h3{font-size:21px;}
.case-body p{font-size:15.5px;margin:0;}
.case-side{display:flex;flex-direction:column;gap:24px;}
.case-mini{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px;flex:1;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.case-mini:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(18,181,160,.4);}
.case-mini img{width:120px;height:84px;object-fit:cover;border-radius:10px;flex:0 0 auto;background:var(--teal-soft);}
.case-mini h4{font-size:16.5px;margin-bottom:6px;line-height:1.4;}
.case-mini p{font-size:14px;margin:0;color:var(--text);}

/* ---------- 方案 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:center;}
.plan{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 28px;position:relative;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.plan:hover{transform:translateY(-3px);}
.plan.is-featured{
  background:#fff;border:2px solid var(--violet);
  padding:42px 30px;box-shadow:var(--sh-3);transform:scale(1.03);
}
.plan.is-featured:hover{transform:scale(1.03) translateY(-3px);}
.plan-badge{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--violet);color:#fff;font-size:12.5px;font-weight:600;
  height:26px;padding:0 14px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;letter-spacing:.06em;
}
.plan h3{font-size:20px;margin-bottom:8px;}
.plan-desc{font-size:14px;color:var(--muted);margin-bottom:20px;}
.plan-price{display:flex;align-items:baseline;gap:6px;margin-bottom:22px;}
.plan-price em{font-style:normal;font-size:18px;color:var(--ink-2);}
.plan-price strong{
  font-family:var(--serif);font-size:40px;font-weight:700;color:var(--ink);
  line-height:1;font-variant-numeric:tabular-nums;
}
.plan-price span{font-size:13.5px;color:var(--muted);}
.plan-list{display:flex;flex-direction:column;gap:12px;margin-bottom:26px;}
.plan-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-2);line-height:1.6;}
.plan-list li::before{content:"✓";color:var(--teal);font-weight:700;flex:0 0 auto;}
.plan-note{margin-top:26px;font-size:13.5px;color:var(--muted);text-align:center;}

/* ---------- 资讯列表 ---------- */
.news-grid{margin-left:-12px;margin-right:-12px;}
.news-grid > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.3);}
.news-link{display:flex;flex-direction:column;height:100%;color:inherit;text-decoration:none;}
.news-link:hover{color:inherit;}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--violet-soft);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .38s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-thumb .chip{position:absolute;left:12px;top:12px;}
.news-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{
  font-size:18px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;color:var(--text);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:8px;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.news-arrow{color:var(--violet);transition:transform .2s var(--ease);}
.news-card:hover .news-arrow{transform:translateX(3px);}
.empty-state{
  min-height:320px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-md);
  color:var(--muted);font-size:15px;text-align:center;padding:24px;
}
.empty-state .empty-icon{
  width:52px;height:52px;border-radius:50%;background:var(--violet-soft);color:var(--violet);
  display:grid;place-items:center;font-size:22px;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:720px;margin:0 auto;}
.faq-head{text-align:center;margin-bottom:36px;}
.faq-head p{margin-top:12px;font-size:16px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;
  padding:22px 44px 22px 0;text-align:left;position:relative;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.55;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--violet);}
.faq-q::after{
  content:"";position:absolute;right:10px;top:50%;
  width:11px;height:11px;margin-top:-8px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);
  transition:transform .25s var(--ease),border-color .2s var(--ease);
}
.faq-item.is-open .faq-q{color:var(--violet);}
.faq-item.is-open .faq-q::after{transform:rotate(-135deg);border-color:var(--violet);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a-inner{padding:0 44px 22px 0;font-size:16px;line-height:1.85;color:var(--text);}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  background:var(--violet-soft);
  border-radius:24px;
  padding:64px 40px;
  text-align:center;
}
.cta-band h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px;}
.cta-band p{max-width:560px;margin:0 auto 30px;font-size:16.5px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#F7F5F2;padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--violet);color:#fff;}
.footer-brand .brand-text{color:#fff;font-size:18px;}
.footer-col h4{
  font-family:var(--sans);font-size:13px;font-weight:600;
  letter-spacing:.16em;color:rgba(247,245,242,.6);margin-bottom:16px;
}
.footer-col p{font-size:14.5px;color:rgba(247,245,242,.68);line-height:1.8;}
.footer-col a{
  display:block;font-size:15px;color:rgba(247,245,242,.82);
  padding:6px 0;text-decoration:none;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-col a:hover{color:var(--teal);transform:translateX(2px);}
.footer-search{position:relative;display:flex;align-items:center;height:46px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-pill);margin-top:16px;}
.footer-search input{
  flex:1;height:44px;border:0;background:transparent;outline:none;
  padding:0 16px 0 44px;font-size:14.5px;color:#fff;min-width:0;font-family:inherit;
}
.footer-search input::placeholder{color:rgba(247,245,242,.45);}
.footer-search .search-icon{position:absolute;left:16px;color:rgba(247,245,242,.5);display:grid;place-items:center;}
.footer-bottom{
  border-top:1px solid rgba(247,245,242,.12);
  margin-top:52px;padding:24px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(247,245,242,.55);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:60;
  width:48px;height:48px;border-radius:50%;border:0;
  background:var(--violet);color:#fff;cursor:pointer;
  display:grid;place-items:center;font-size:18px;
  opacity:0;pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
  box-shadow:var(--sh-2);
}
.to-top.is-visible{opacity:1;pointer-events:auto;}
.to-top:hover{background:var(--violet-hover);transform:translateY(-3px);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1439px) and (min-width:1200px){
  .header-inner{max-width:1320px;}
  .container{max-width:1320px;}
}
@media (max-width:1140px){
  .main-nav a{padding:8px 9px;font-size:14.5px;}
  .nav-search{max-width:300px;}
  .split{gap:44px;}
}
@media (max-width:1023px){
  .nav-search{display:none;}
  .main-nav{display:none;}
  .nav-cta{display:none;}
  .menu-toggle{display:grid;margin-left:auto;}
  .header-inner{height:60px;}
  .hero{padding:72px 0 64px;}
  .hero-stats{gap:32px;margin-top:40px;}
  .split{grid-template-columns:1fr;gap:36px;}
  .case-grid{grid-template-columns:1fr;}
  .plan-grid{grid-template-columns:1fr;gap:20px;}
  .plan.is-featured{transform:none;}
  .plan.is-featured:hover{transform:translateY(-3px);}
  .scene-card{flex:0 0 48%;}
  .track-nav{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}
@media (max-width:639px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .header-inner{padding:0 20px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:30px;height:30px;font-size:12px;}
  .hero{padding:56px 0 52px;}
  .hero-title{font-size:29px;}
  .hero-sub{font-size:16.5px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:24px;}
  .hero-stats strong{font-size:26px;}
  .section{padding:56px 0;}
  .news-grid{margin-left:0;margin-right:0;}
  .news-grid > .cell{padding-left:0;padding-right:0;}
  .scene-card{flex:0 0 86%;}
  .case-mini img{width:96px;height:72px;}
  .cta-band{padding:44px 24px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .to-top{right:16px;bottom:16px;width:44px;height:44px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  .hero-title{clip-path:none;animation:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
/* ===================== 设计变量 ===================== */
:root{
  --ink:#0E1014;
  --ink-2:#2A2E36;
  --text:#5B6270;
  --muted:#9AA0AB;
  --line:#E6E3DE;
  --paper:#F7F5F2;
  --white:#FFFFFF;
  --violet:#5B3DF5;
  --violet-2:#6E52FF;
  --violet-soft:#EFEBFF;
  --teal:#12B5A0;
  --teal-soft:#E4F6F3;
  --ok:#1F9D6B;
  --warn:#C97B1E;
  --err:#C2443B;
  --r-xs:6px;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,16,20,.05);
  --sh-2:0 8px 24px -12px rgba(14,16,20,.16);
  --sh-3:0 24px 60px -28px rgba(14,16,20,.28);
  --ring:0 0 0 3px rgba(91,61,245,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --num:"Inter","Helvetica Neue",Arial,sans-serif;
  --header-h:72px;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--serif);
  font-weight:700;
  color:var(--ink);
  line-height:1.25;
  letter-spacing:-.015em;
}
p{margin:0 0 1.25em;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
img{max-width:100%;display:block;border:0;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;}
input,button,textarea{font-size:inherit;color:inherit;}
:focus-visible{outline:none;box-shadow:var(--ring);border-radius:var(--r-xs);}
::selection{background:var(--violet-soft);color:var(--ink);}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1320px;}
}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -16px rgba(14,16,20,.4);}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  height:var(--header-h);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--violet),#7c63ff);
  color:#fff;
  font-family:var(--num);
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
  box-shadow:var(--sh-1);
}
.brand-text{
  font-family:var(--serif);
  font-size:20px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
  white-space:nowrap;
}

.header-search{
  position:relative;
  display:flex;
  align-items:center;
  flex:1 1 auto;
  max-width:460px;
  height:44px;
  margin:0 auto;
  padding:0 6px 0 42px;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  background:var(--paper);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.header-search:focus-within{
  background:#fff;
  border-color:var(--violet);
  box-shadow:var(--ring);
}
.header-search .search-icon{
  position:absolute;
  left:16px;top:50%;
  transform:translateY(-50%);
  color:var(--muted);
  display:flex;
}
.header-search input{
  flex:1 1 auto;
  height:100%;
  border:0;
  background:transparent;
  font-size:15px;
  line-height:1.4;
}
.header-search input::placeholder{color:var(--muted);}
.header-search input:focus{outline:none;}
.search-submit{
  opacity:0;
  transform:translateX(6px);
  pointer-events:none;
  border:0;
  height:32px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:var(--violet);
  color:#fff;
  font-size:13.5px;
  font-weight:600;
  cursor:pointer;
  transition:opacity .22s var(--ease),transform .22s var(--ease),background .2s var(--ease);
}
.header-search:focus-within .search-submit{
  opacity:1;
  transform:translateX(0);
  pointer-events:auto;
}
.search-submit:hover{background:var(--violet-2);}

.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  flex:0 0 auto;
}
.main-nav a{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:var(--ink-2);
  border-radius:var(--r-xs);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--violet);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.main-nav a:hover{color:var(--violet);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--violet);font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}

.header-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:44px;height:44px;
  display:none;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:#fff;
  color:var(--ink-2);
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:var(--violet);color:var(--violet);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--r-md);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--violet);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--violet-2);transform:translateY(-2px);box-shadow:var(--sh-2);color:#fff;}
.btn-primary:active{transform:translateY(0) scale(.98);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0) scale(.98);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-white{background:#fff;color:var(--ink);}
.btn-white:hover{background:var(--teal);color:var(--ink);transform:translateY(-2px);}

.header-cta{display:inline-flex;}

/* 移动端抽屉与搜索面板 */
.mobile-search,
.mobile-drawer{display:none;}

/* ===================== 文章头部 ===================== */
.page-main{padding-bottom:96px;}
.article-head{
  padding:34px 0 30px;
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--muted);
  margin-bottom:18px;
}
.breadcrumb a:hover{color:var(--violet);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-2);}

.chip{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}
.chip-cat{background:var(--teal-soft);color:#0d8b7b;}
.chip-soft{background:var(--violet-soft);color:var(--violet);}
.chip-ink{background:var(--ink);color:#fff;}

.article-title{
  font-size:44px;
  line-height:1.2;
  letter-spacing:-.02em;
  margin:16px 0 20px;
  max-width:940px;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  font-size:13.5px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
  font-family:var(--num);
}
.meta-row .dot{color:var(--line);}
.meta-row .label{font-family:var(--sans);}

/* ===================== 文章主体布局 ===================== */
.article-layout{margin-top:48px;}
.article-main{min-width:0;}
.article-side{min-width:0;}
@media screen and (min-width:1024px){
  .article-side{
    position:sticky;
    top:96px;
    align-self:flex-start;
  }
}

.article-body{
  max-width:760px;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.25em;}
.article-body strong{color:var(--ink-2);font-weight:600;}
.article-body h2{
  font-family:var(--serif);
  font-size:28px;
  line-height:1.3;
  color:var(--ink);
  margin:40px 0 16px;
  padding-left:14px;
  border-left:4px solid var(--violet);
  scroll-margin-top:104px;
}
.article-body h3{
  font-family:var(--serif);
  font-size:22px;
  color:var(--ink-2);
  margin:28px 0 12px;
  scroll-margin-top:104px;
}
.article-body h4{
  font-family:var(--serif);
  font-size:18px;
  color:var(--ink-2);
  margin:24px 0 10px;
}
.article-body ul,
.article-body ol{
  margin:0 0 1.25em;
  padding-left:1.35em;
}
.article-body li{margin:0 0 .5em;}
.article-body ul li::marker{color:var(--teal);}
.article-body ol li::marker{color:var(--violet);font-family:var(--num);}
.article-body a{
  color:var(--violet);
  border-bottom:1px solid rgba(91,61,245,.35);
}
.article-body a:hover{color:var(--violet-2);border-bottom-color:var(--violet-2);}
.article-body blockquote{
  margin:24px 0;
  padding:20px 24px;
  border-left:3px solid var(--violet);
  background:var(--violet-soft);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-md);
  margin:24px 0;
  height:auto;
  background:var(--paper);
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15.5px;
}
.article-body th,
.article-body td{
  border:1px solid var(--line);
  padding:12px 16px;
  text-align:left;
}
.article-body th{background:var(--paper);color:var(--ink-2);font-weight:600;}
.article-body code{
  font-family:var(--num);
  font-size:14.5px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-xs);
  padding:2px 6px;
  color:var(--ink-2);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

.empty-state{
  padding:64px 28px;
  text-align:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
.empty-state .empty-icon{
  width:56px;height:56px;
  margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-md);
  background:var(--violet-soft);
  color:var(--violet);
}
.empty-state h2{
  font-size:22px;
  margin-bottom:10px;
  border:0;
  padding:0;
}
.empty-state p{color:var(--text);margin-bottom:22px;}

/* ===================== 侧栏 ===================== */
.side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:24px;
  margin-bottom:20px;
}
.side-card h3{
  font-size:17px;
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.toc-list{list-style:none;padding:0;margin:0;counter-reset:toc;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;
  padding:7px 12px;
  border-left:2px solid transparent;
  font-size:14.5px;
  color:var(--text);
  border-radius:0 var(--r-xs) var(--r-xs) 0;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{color:var(--violet);background:var(--paper);}
.toc-list a.is-current{
  color:var(--violet);
  font-weight:600;
  background:var(--violet-soft);
  border-left-color:var(--violet);
}

.side-links{list-style:none;padding:0;margin:0;}
.side-links li + li{border-top:1px solid var(--line);}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 0;
  font-size:15px;
  color:var(--ink-2);
}
.side-links a .arrow{color:var(--muted);transition:transform .2s var(--ease),color .2s var(--ease);}
.side-links a:hover{color:var(--violet);}
.side-links a:hover .arrow{color:var(--violet);transform:translateX(3px);}

.cta-card{
  background:var(--ink);
  border:0;
  color:#fff;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:10px 10px;
}
.cta-card h3{border-bottom-color:rgba(255,255,255,.16);color:#fff;}
.cta-card p{color:rgba(255,255,255,.72);font-size:14.5px;margin-bottom:18px;}

/* ===================== 文末延伸 ===================== */
.article-foot{
  margin-top:56px;
  padding-top:32px;
  border-top:1px solid var(--line);
}
.foot-title{
  font-size:22px;
  margin-bottom:20px;
}
.related-card{
  display:flex;
  gap:16px;
  height:100%;
  padding:16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  border-color:rgba(91,61,245,.3);
}
.related-thumb{
  flex:0 0 108px;
  width:108px;
  aspect-ratio:16 / 11;
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--paper);
}
.related-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .32s var(--ease);
}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{min-width:0;}
.related-body h4{
  font-size:16.5px;
  margin-bottom:6px;
  line-height:1.4;
}
.related-body p{
  font-size:14px;
  color:var(--text);
  margin:0;
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card:hover .related-body h4{color:var(--violet);}

.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:32px;
  font-size:15px;
  font-weight:600;
  color:var(--violet);
}
.back-link svg{transition:transform .2s var(--ease);}
.back-link:hover svg{transform:translateX(-3px);}

/* ===================== 页脚 ===================== */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:72px 0 0;
  margin-top:0;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:14px 14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-col h4{
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.14em;
  color:#fff;
  margin-bottom:18px;
  font-weight:600;
}
.footer-col p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-col a{
  display:block;
  font-size:15px;
  color:rgba(255,255,255,.72);
  padding:5px 0;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--teal);transform:translateX(2px);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;font-size:13px;}
.footer-brand .brand-text{color:#fff;font-size:19px;}
.footer-search{
  position:relative;
  display:flex;
  align-items:center;
  margin-top:14px;
  height:44px;
  padding:0 14px 0 40px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);
  transition:border-color .22s var(--ease);
}
.footer-search:focus-within{border-color:var(--teal);}
.footer-search .search-icon{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  color:rgba(255,255,255,.5);display:flex;
}
.footer-search input{
  width:100%;
  border:0;
  background:transparent;
  color:#fff;
  font-size:14.5px;
}
.footer-search input::placeholder{color:rgba(255,255,255,.45);}
.footer-search input:focus{outline:none;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ===================== 返回顶部 ===================== */
.to-top{
  position:fixed;
  right:24px;
  bottom:28px;
  width:48px;height:48px;
  display:flex;align-items:center;justify-content:center;
  border:0;
  border-radius:50%;
  background:var(--violet);
  color:#fff;
  box-shadow:var(--sh-3);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--violet-2);}

/* ===================== 进入视口动效 ===================== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ===================== 响应式 ===================== */
@media screen and (max-width:1199px){
  .header-search{max-width:340px;}
  .main-nav a{padding:8px 9px;font-size:14.5px;}
}
@media screen and (max-width:1023px){
  .main-nav,
  .header-cta{display:none;}
  .icon-btn{display:inline-flex;}
  .header-search{display:none;}
  .header-inner{height:60px;gap:14px;}
  .brand-text{font-size:18px;}
  :root{--header-h:60px;}

  .mobile-search{
    display:block;
    max-height:0;
    overflow:hidden;
    border-top:1px solid transparent;
    transition:max-height .24s var(--ease),border-color .24s var(--ease);
  }
  .mobile-search.is-open{
    max-height:200px;
    border-top-color:var(--line);
    padding:14px 0 16px;
  }
  .mobile-search form{
    position:relative;
    display:flex;
    align-items:center;
    height:46px;
    padding:0 14px 0 42px;
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    background:#fff;
  }
  .mobile-search form .search-icon{
    position:absolute;left:16px;top:50%;transform:translateY(-50%);
    color:var(--muted);display:flex;
  }
  .mobile-search input{flex:1;border:0;background:transparent;height:100%;}
  .mobile-search input:focus{outline:none;}
  .mobile-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
  .mobile-chips a{
    padding:5px 12px;
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    font-size:13px;
    color:var(--ink-2);
    background:#fff;
  }
  .mobile-chips a:hover{border-color:var(--violet);color:var(--violet);}

  .mobile-drawer{
    display:block;
    max-height:0;
    overflow:hidden;
    background:#fff;
    transition:max-height .28s var(--ease);
  }
  .mobile-drawer.is-open{max-height:520px;border-top:1px solid var(--line);}
  .mobile-drawer nav{display:block;padding:8px 0 16px;}
  .mobile-drawer nav a{
    display:block;
    line-height:56px;
    padding:0 4px;
    font-size:16px;
    color:var(--ink-2);
    border-bottom:1px solid var(--line);
  }
  .mobile-drawer nav a.is-active{color:var(--violet);font-weight:600;}
  .mobile-drawer .drawer-cta{display:flex;width:100%;margin:16px 0 4px;}

  .article-title{font-size:32px;line-height:1.25;}
  .article-layout{margin-top:36px;}
  .article-side{margin-top:12px;}
  .article-foot{margin-top:44px;}
}
@media screen and (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .article-head{padding:24px 0 22px;}
  .article-title{font-size:28px;margin:12px 0 16px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:23px;margin:32px 0 14px;}
  .article-body h3{font-size:19px;margin:24px 0 10px;}
  .article-body table{
    display:block;
    overflow-x:auto;
    white-space:nowrap;
    font-size:14.5px;
  }
  .related-card{flex-direction:row;}
  .related-thumb{flex:0 0 92px;width:92px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .page-main{padding-bottom:64px;}
}
@media screen and (max-width:519px){
  .brand-text{font-size:16.5px;}
  .brand-mark{width:32px;height:32px;font-size:12.5px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .side-card{padding:20px;}
  .to-top{right:16px;bottom:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#0E1014;
  --ink-2:#2A2E36;
  --text:#5B6270;
  --muted:#9AA0AB;
  --line:#E6E3DE;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --violet:#5B3DF5;
  --violet-hover:#6E52FF;
  --violet-soft:#EFEBFF;
  --teal:#12B5A0;
  --teal-deep:#0B7C6D;
  --teal-soft:#E4F6F3;
  --success:#1F9D6B;
  --warn:#C97B1E;
  --danger:#C2443B;
  --r-sm:6px;
  --r-md:12px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,16,20,.05);
  --sh-2:0 8px 24px -12px rgba(14,16,20,.16);
  --sh-3:0 24px 60px -28px rgba(14,16,20,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-serif);
  color:var(--ink);
  margin:0;
  font-weight:700;
  line-height:1.22;
  letter-spacing:-.015em;
}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
a{color:var(--violet);text-decoration:none;transition:color .2s var(--ease)}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--violet);outline-offset:2px}
::selection{background:var(--violet-soft);color:var(--ink)}

.grid-container{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1440px){.grid-container{max-width:1320px}}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}

.grid-row{margin-left:-16px;margin-right:-16px}
.grid-row > .cell{padding-left:16px;padding-right:16px;margin-bottom:32px}

.section{padding:88px 0}
.section--tight{padding:64px 0}
.eyebrow{
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--teal-deep);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-head{max-width:780px;margin-bottom:40px}
.section-head h2{font-size:32px;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--text);margin:0}
.divider-line{height:1px;background:var(--line);border:none;margin:0}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  min-height:44px;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--violet);color:#fff}
.btn-primary:hover{background:var(--violet-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#fff;color:var(--violet);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline-light{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.55);color:#fff}
.btn-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 0;
  color:var(--violet);
  font-weight:600;
  font-size:15px;
  position:relative;
}
.btn-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:1px;width:0;
  background:var(--violet);
  transition:width .22s var(--ease);
}
.btn-link:hover::after{width:100%}

.chip{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  background:var(--teal-soft);
  color:var(--teal-deep);
  white-space:nowrap;
}
.chip--violet{background:var(--violet-soft);color:var(--violet)}
.chip--dark{background:var(--ink);color:#fff}
.chip--light{background:rgba(255,255,255,.16);color:#fff}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(14,16,20,.4)}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  height:72px;
  width:100%;
}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:36px;height:36px;
  border-radius:10px;
  background:var(--violet);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);
  font-size:16px;font-weight:700;
  letter-spacing:0;
}
.brand-text{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-search{
  position:relative;
  flex:1 1 auto;
  min-width:200px;
  max-width:520px;
  height:44px;
  display:flex;
  align-items:center;
}
.nav-search .search-icon{
  position:absolute;
  left:16px;
  color:var(--muted);
  display:flex;
  pointer-events:none;
}
.nav-search input{
  width:100%;
  height:44px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  background:var(--paper);
  padding:0 96px 0 46px;
  font-size:15px;
  color:var(--ink-2);
  transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search input:focus{
  outline:none;
  background:#fff;
  border-color:var(--violet);
  box-shadow:0 0 0 3px rgba(91,61,245,.18);
}
.nav-search .search-btn{
  position:absolute;
  right:6px;
  height:34px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:var(--violet);
  color:#fff;
  font-size:13.5px;
  font-weight:600;
  opacity:0;
  transform:translateX(6px);
  pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.nav-search:focus-within .search-btn{opacity:1;transform:none;pointer-events:auto}
.main-nav{
  display:flex;
  align-items:center;
  gap:22px;
  margin-left:auto;
  flex:none;
}
.main-nav a{
  position:relative;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:0;
  background:var(--violet);
  transition:width .22s var(--ease);
}
.main-nav a:hover{color:var(--violet)}
.main-nav a:hover::after{width:100%}
.main-nav a.is-active{color:var(--violet);font-weight:600}
.main-nav a.is-active::after{width:100%}
.nav-cta{flex:none;padding:11px 20px;min-height:40px;font-size:14.5px}
.icon-btn{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  align-items:center;
  justify-content:center;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{background:var(--violet-soft);border-color:var(--violet);color:var(--violet)}
.mobile-panel,.mobile-search{
  position:absolute;
  top:100%;left:0;right:0;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-2);
  display:none;
  padding:10px 0 22px;
}
.mobile-panel.is-open,.mobile-search.is-open{display:block;animation:panelDrop .24s var(--ease) both}
@keyframes panelDrop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.mobile-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:56px;
  padding:0 4px;
  border-bottom:1px solid var(--line);
  color:var(--ink-2);
  font-size:16px;
  font-weight:500;
}
.mobile-nav a.is-active{color:var(--violet);font-weight:600}
.mobile-nav a span.arrow{color:var(--muted)}
.mobile-panel .btn{width:100%;margin-top:18px}
.mobile-search form{
  position:relative;
  display:flex;
  align-items:center;
  margin-bottom:16px;
}
.mobile-search .search-icon{position:absolute;left:16px;color:var(--muted);display:flex;pointer-events:none}
.mobile-search input{
  width:100%;height:48px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--paper);
  padding:0 18px 0 46px;
  font-size:15px;
}
.mobile-search input:focus{outline:none;background:#fff;border-color:var(--violet);box-shadow:0 0 0 3px rgba(91,61,245,.18)}
.mobile-search .hot-chips{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  color:#fff;
  padding:66px 0 58px;
  background-color:var(--ink);
  background-image:linear-gradient(115deg,rgba(14,16,20,.92) 0%,rgba(14,16,20,.72) 46%,rgba(14,16,20,.55) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  min-height:300px;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.5;
  pointer-events:none;
}
.cat-hero .hero-inner{position:relative;z-index:2}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:rgba(255,255,255,.62);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.4)}
.breadcrumb .current{color:#fff}
.hero-flex{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.hero-copy{max-width:720px}
.cat-hero h1{
  color:#fff;
  font-size:40px;
  line-height:1.2;
  margin:16px 0 16px;
  animation:riseIn .7s var(--ease) both;
}
.cat-hero .hero-sub{
  font-size:16.5px;
  color:rgba(255,255,255,.82);
  margin:0;
  max-width:640px;
  animation:riseIn .7s .08s var(--ease) both;
}
@keyframes riseIn{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;animation:riseIn .7s .16s var(--ease) both}

/* ---------- stats ---------- */
.stats-wrap{margin-top:-44px;position:relative;z-index:5}
.stats-strip{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  padding:30px 28px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.stat-item{border-left:1px solid var(--line);padding-left:22px}
.stat-item:first-child{border-left:none;padding-left:0}
.stat-num{
  font-family:var(--font-serif);
  font-size:34px;
  font-weight:700;
  color:var(--ink);
  line-height:1.15;
  font-variant-numeric:tabular-nums;
}
.stat-num small{font-size:15px;color:var(--muted);font-family:var(--font-sans);font-weight:500;margin-left:4px}
.stat-label{font-size:14px;color:var(--muted);margin-top:4px}

/* ---------- matrix ---------- */
.matrix-layout{align-items:flex-start}
.side-panel{position:sticky;top:96px}
.side-search{position:relative;display:flex;align-items:center;margin-bottom:18px}
.side-search .search-icon{position:absolute;left:14px;color:var(--muted);display:flex;pointer-events:none}
.side-search input{
  width:100%;height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  padding:0 16px 0 42px;
  font-size:14.5px;
}
.side-search input::placeholder{color:var(--muted)}
.side-search input:focus{outline:none;border-color:var(--violet);box-shadow:0 0 0 3px rgba(91,61,245,.18)}
.side-nav{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:10px;
}
.side-nav-title{
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--muted);
  padding:6px 12px 10px;
  font-weight:600;
}
.side-nav a{
  display:block;
  padding:11px 14px;
  border-radius:8px;
  font-size:14.5px;
  color:var(--ink-2);
  transition:background-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.side-nav a:hover{background:var(--paper);color:var(--violet);box-shadow:inset 2px 0 0 var(--violet)}
.side-card{
  margin-top:20px;
  background:var(--violet);
  border-radius:var(--r-lg);
  padding:26px 24px;
  color:#fff;
  box-shadow:var(--sh-2);
}
.side-card h3{color:#fff;font-size:20px;margin-bottom:10px}
.side-card p{color:rgba(255,255,255,.82);font-size:14.5px;line-height:1.75;margin-bottom:18px}
.side-card .btn-light{width:100%;padding:12px 18px;font-size:14.5px;min-height:42px}
.side-note{font-size:13px;color:var(--muted);margin-top:14px;padding:0 6px}

.group{margin-bottom:52px;scroll-margin-top:96px}
.group:last-child{margin-bottom:0}
.group-head{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding-bottom:14px;
  border-bottom:2px solid var(--ink);
  margin-bottom:6px;
}
.group-head h2{font-size:24px}
.group-head .count{font-size:13px;color:var(--muted);font-family:var(--font-sans);font-weight:500}
.group-intro{font-size:14.5px;color:var(--muted);margin:12px 0 6px}

.entry{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:18px 14px;
  border-bottom:1px solid var(--line);
  border-radius:10px;
  transition:background-color .2s var(--ease);
}
.entry:hover{background:var(--paper)}
.entry-body{flex:1;min-width:0}
.entry h3{
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:600;
  letter-spacing:0;
  color:var(--ink);
  margin-bottom:4px;
  transition:color .2s var(--ease);
}
.entry:hover h3{color:var(--violet)}
.entry p{font-size:14px;line-height:1.75;color:var(--text);margin:0}
.entry-arrow{flex:none;color:var(--muted);padding-top:3px;transition:transform .2s var(--ease),color .2s var(--ease)}
.entry:hover .entry-arrow{transform:translateX(3px);color:var(--violet)}

/* ---------- scenes ---------- */
.scene-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-1);
  height:100%;
  display:flex;
  flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,181,160,.6)}
.scene-media{overflow:hidden;background:var(--violet-soft)}
.scene-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .32s var(--ease)}
.scene-card:hover .scene-media img{transform:scale(1.03)}
.scene-body{padding:22px 22px 26px;flex:1;display:flex;flex-direction:column}
.scene-body h3{font-size:20px;margin:12px 0 10px}
.scene-body p{font-size:14.5px;line-height:1.78;margin-bottom:16px}
.scene-body .scene-foot{margin-top:auto;font-size:13.5px;color:var(--muted)}

/* ---------- flow ---------- */
.flow-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.flow-step{border-top:1px solid var(--line);padding-top:22px;position:relative}
.flow-step::before{
  content:"";
  position:absolute;
  top:-5px;left:0;
  width:9px;height:9px;
  border-radius:50%;
  background:var(--teal);
}
.flow-num{
  font-family:var(--font-serif);
  font-size:32px;
  font-weight:700;
  color:var(--violet);
  line-height:1;
  font-variant-numeric:tabular-nums;
  margin-bottom:12px;
}
.flow-step h3{font-size:18px;font-family:var(--font-sans);font-weight:600;margin-bottom:8px}
.flow-step p{font-size:14.5px;line-height:1.78;margin:0}

/* ---------- faq ---------- */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-of-type{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:20px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--violet)}
.faq-item[open] summary{color:var(--violet)}
.faq-icon{
  flex:none;
  width:24px;height:24px;
  border-radius:50%;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--muted);
  font-size:16px;
  line-height:1;
  margin-top:4px;
  transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--violet);border-color:var(--violet)}
.faq-answer{padding:0 4px 24px;font-size:16px;line-height:1.85;color:var(--text);max-width:720px}

/* ---------- cta ---------- */
.cta-section{background:var(--violet-soft);padding:80px 0}
.cta-inner{max-width:720px;margin:0 auto;text-align:center}
.cta-inner h2{font-size:30px;margin-bottom:14px}
.cta-inner p{font-size:16px;color:var(--text);margin-bottom:28px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#EFEDEA;padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--violet)}
.footer-brand .brand-text{color:#fff;font-size:19px}
.footer-col h4{
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:600;
  letter-spacing:.16em;
  color:#fff;
  margin-bottom:18px;
}
.footer-col a{display:block;font-size:15px;color:#B9BDC6;padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--teal);transform:translateX(2px)}
.footer-col p{font-size:14px;line-height:1.8;color:#9AA0AB}
.footer-search{
  position:relative;
  display:flex;
  align-items:center;
  margin-top:14px;
}
.footer-search .search-icon{position:absolute;left:14px;color:#7C828D;display:flex;pointer-events:none}
.footer-search input{
  width:100%;height:44px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);
  color:#fff;
  padding:0 16px 0 42px;
  font-size:14.5px;
}
.footer-search input::placeholder{color:#7C828D}
.footer-search input:focus{outline:none;border-color:var(--teal);background:rgba(255,255,255,.1)}
.footer-bottom{
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8A909B;
}

/* ---------- back top ---------- */
.back-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:48px;height:48px;
  border-radius:50%;
  background:var(--violet);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:var(--sh-2);
  opacity:0;
  pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
  z-index:70;
}
.back-top.is-visible{opacity:1;pointer-events:auto}
.back-top:hover{background:var(--violet-hover);transform:translateY(-2px)}

.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

@media (max-width:1199px){
  .cat-hero h1{font-size:36px}
  .main-nav{gap:18px}
  .main-nav a{font-size:14.5px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}

@media (max-width:1023px){
  .nav-search,.main-nav,.nav-cta{display:none}
  .icon-btn{display:inline-flex}
  .header-inner{gap:12px}
  .brand-text{font-size:18px}
  .stats-strip{grid-template-columns:repeat(2,1fr);gap:24px 20px}
  .stat-item:nth-child(3){border-left:none;padding-left:0}
  .stat-item{padding-left:18px}
  .side-panel{position:static;margin-bottom:36px}
  .flow-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-section{padding:64px 0}
}

@media (max-width:767px){
  body{font-size:16px;line-height:1.85}
  .container,.grid-container{padding-left:20px;padding-right:20px}
  .section{padding:60px 0}
  .section--tight{padding:48px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:24px}
  .cat-hero{padding:44px 0 44px;min-height:auto}
  .cat-hero h1{font-size:29px;margin:12px 0 12px}
  .cat-hero .hero-sub{font-size:15.5px}
  .hero-flex{gap:24px}
  .stats-wrap{margin-top:-28px}
  .stats-strip{padding:22px 20px;border-radius:16px}
  .stat-num{font-size:27px}
  .group-head h2{font-size:20px}
  .entry{padding:16px 8px;gap:12px}
  .entry h3{font-size:16px}
  .flow-grid{grid-template-columns:1fr;gap:22px}
  .cta-inner h2{font-size:23px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:52px 0 26px}
  .footer-bottom{flex-direction:column;gap:8px;font-size:12.5px}
  .faq-item summary{font-size:16px;padding:18px 2px}
  .faq-answer{font-size:15.5px;padding:0 2px 20px}
  .back-top{right:16px;bottom:16px;width:44px;height:44px}
}

@media (max-width:520px){
  .brand-mark{width:32px;height:32px;font-size:14px}
  .brand-text{font-size:16px}
  .stats-strip{grid-template-columns:1fr;gap:18px}
  .stat-item{border-left:none;padding-left:0;padding-bottom:16px;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:none;padding-bottom:0}
  .hero-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --ink:#0E1014;
  --ink-2:#2A2E36;
  --body-text:#5B6270;
  --muted:#9AA0AB;
  --line:#E6E3DE;
  --paper:#F7F5F2;
  --white:#FFFFFF;
  --primary:#5B3DF5;
  --primary-hover:#6E52FF;
  --primary-soft:#EFEBFF;
  --teal:#12B5A0;
  --teal-soft:#E4F6F3;
  --success:#1F9D6B;
  --warn:#C97B1E;
  --danger:#C2443B;
  --r-sm:6px;
  --r-md:12px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,16,20,.05);
  --sh-2:0 8px 24px -12px rgba(14,16,20,.16);
  --sh-3:0 24px 60px -28px rgba(14,16,20,.28);
  --ring:0 0 0 3px rgba(91,61,245,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--body-text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{
  font-family:var(--font-serif);
  color:var(--ink);
  font-weight:700;
  letter-spacing:-.015em;
  line-height:1.22;
  margin:0;
}
p{margin:0 0 1.25em;}
p:last-child{margin-bottom:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--primary-hover);}
img{max-width:100%;display:block;}
button,input{font-family:inherit;font-size:inherit;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:var(--ring);border-radius:var(--r-sm);}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.grid-container{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%;}
@media (min-width:1440px){.grid-container{max-width:1320px;}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -18px rgba(14,16,20,.5);}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-weight:700;font-size:15px;letter-spacing:.02em;
}
.brand-text{font-family:var(--font-serif);font-weight:700;font-size:20px;color:var(--ink);white-space:nowrap;}
.nav-search{
  position:relative;flex:1 1 auto;max-width:520px;min-width:200px;
  display:flex;align-items:center;
  height:44px;background:var(--paper);
  border:1px solid transparent;border-radius:var(--r-pill);
  padding:0 6px 0 16px;
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{background:#fff;border-color:var(--primary);box-shadow:var(--ring);}
.nav-search .search-icon{display:flex;color:var(--muted);flex:0 0 auto;}
.nav-search input{
  flex:1 1 auto;border:0;background:transparent;height:42px;
  padding:0 10px;color:var(--ink-2);font-size:15px;outline:none;
}
.nav-search input::placeholder{color:var(--muted);}
.search-submit{
  flex:0 0 auto;border:0;cursor:pointer;
  background:var(--primary);color:#fff;
  font-size:14px;font-weight:600;
  padding:0 18px;height:34px;border-radius:var(--r-pill);
  opacity:0;transform:translateX(6px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.nav-search:focus-within .search-submit{opacity:1;transform:none;}
.search-submit:hover{background:var(--primary-hover);}
.main-nav{display:flex;align-items:center;gap:6px;flex:0 0 auto;}
.main-nav a{
  display:inline-block;padding:8px 12px;border-radius:var(--r-sm);
  font-size:15px;color:var(--ink-2);position:relative;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.main-nav a:hover{color:var(--primary);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--primary);font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-md);font-weight:600;font-size:15px;
  padding:12px 24px;border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .18s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0) scale(.98);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0) scale(.98);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--teal);color:var(--ink);transform:translateY(-2px);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:600;color:var(--primary);position:relative;
}
.btn-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.btn-link:hover::after{transform:scaleX(1);}
.nav-cta{flex:0 0 auto;padding:11px 20px;}
.menu-toggle{
  display:none;flex:0 0 auto;width:44px;height:44px;
  border:1px solid var(--line);background:#fff;border-radius:var(--r-md);
  align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.mobile-panel{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:8px 0 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;line-height:56px;padding:0 24px;color:var(--ink-2);font-size:16px;
  border-bottom:1px solid var(--line);
}
.mobile-panel a.is-active{color:var(--primary);font-weight:600;}
.mobile-panel .panel-cta{margin:16px 24px 0;}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.18em;color:var(--muted);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--muted);}
.section-head h2{font-size:32px;margin-bottom:12px;}
.section-head p{max-width:680px;font-size:16px;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--muted);padding:14px 0;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#C9C6C0;}
.breadcrumb .current{color:var(--ink-2);}

/* ---------- 分类页头图 ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background:#0E1014;
  color:#F7F5F2;
  padding:72px 0 76px;
  text-align:center;
}
.cat-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.5;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,16,20,.72),rgba(14,16,20,.86));
}
.cat-hero .hero-inner{position:relative;z-index:2;}
.cat-hero h1{
  color:#fff;font-size:44px;line-height:1.18;margin-bottom:16px;
}
.cat-hero .hero-sub{
  font-size:17px;color:#D7D4CF;max-width:760px;margin:0 auto 26px;
}
.cat-hero .hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.hero-tags{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:26px;}
.hero-tags span{
  font-size:13px;color:#E9E7E3;
  border:1px solid rgba(233,231,227,.28);
  padding:5px 14px;border-radius:var(--r-pill);
}

/* ---------- 筛选胶囊 ---------- */
.filter-bar{
  display:flex;gap:10px;flex-wrap:wrap;justify-content:center;
  margin-bottom:36px;
}
.chip{
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  font-size:14px;font-weight:500;line-height:1;
  padding:11px 20px;border-radius:var(--r-pill);cursor:pointer;
  transition:all .2s var(--ease);
}
.chip:hover{border-color:var(--primary);color:var(--primary);}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:var(--sh-2);}

/* ---------- 权益图文网格 ---------- */
.benefit-grid{margin-top:-6px;}
.benefit-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
  margin-bottom:32px;
}
.benefit-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,181,160,.6);}
.benefit-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--primary-soft);}
.benefit-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.benefit-card:hover .benefit-media img{transform:scale(1.03);}
.media-tag{
  position:absolute;top:14px;left:14px;
  background:var(--teal-soft);color:#0E7A6C;
  font-size:12.5px;font-weight:600;line-height:1;
  padding:7px 12px;border-radius:var(--r-pill);
}
.benefit-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1 1 auto;}
.benefit-body h3{font-size:22px;margin-bottom:12px;}
.benefit-body p{font-size:15.5px;color:var(--body-text);margin-bottom:20px;}
.benefit-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--muted);
}
.benefit-meta strong{color:var(--ink);font-weight:600;}
.benefit-meta .num{color:var(--primary);font-weight:600;font-size:14px;}

/* ---------- 数据条 ---------- */
.stats-strip{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:38px 32px;box-shadow:var(--sh-1);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat{text-align:left;padding-right:20px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat b{
  display:block;font-family:var(--font-serif);font-size:38px;color:var(--ink);
  line-height:1.1;margin-bottom:8px;letter-spacing:-.02em;
}
.stat b span{font-size:20px;color:var(--primary);margin-left:2px;}
.stat p{font-size:14px;color:var(--muted);margin:0;}

/* ---------- 适用场景 ---------- */
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 26px;height:100%;box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
  margin-bottom:24px;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.3);}
.scene-icon{
  width:44px;height:44px;border-radius:12px;background:var(--primary-soft);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.scene-card h3{font-size:19px;margin-bottom:10px;}
.scene-card p{font-size:15px;margin-bottom:16px;}
.scene-card .chip-tag{
  display:inline-block;font-size:12.5px;color:#0E7A6C;background:var(--teal-soft);
  padding:5px 12px;border-radius:var(--r-pill);
}

/* ---------- 流程步骤 ---------- */
.steps{position:relative;padding-left:6px;}
.step{
  display:flex;gap:22px;padding:0 0 34px;position:relative;
}
.step::before{
  content:"";position:absolute;left:17px;top:34px;bottom:0;width:1px;background:var(--line);
}
.step:last-child::before{display:none;}
.step:last-child{padding-bottom:0;}
.step-num{
  flex:0 0 auto;width:36px;height:36px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.step-body h3{font-size:19px;margin-bottom:8px;}
.step-body p{font-size:15px;margin:0;}

/* ---------- 用户反馈 ---------- */
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;height:100%;box-shadow:var(--sh-1);margin-bottom:24px;
}
.quote-card p{font-size:15.5px;color:var(--ink-2);margin-bottom:18px;}
.quote-who{display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--muted);}
.quote-avatar{
  width:38px;height:38px;border-radius:50%;background:var(--teal-soft);
  color:#0E7A6C;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:14px;font-family:var(--font-serif);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:760px;margin:0 auto;}
.accordion{border:0;background:transparent;margin:0;}
.accordion .accordion-item{border:0;border-top:1px solid var(--line);background:transparent;}
.accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion .accordion-title{
  border:0;background:transparent;padding:22px 40px 22px 0;
  font-size:17px;font-weight:600;color:var(--ink);
  font-family:var(--font-sans);line-height:1.6;position:relative;
  transition:color .2s var(--ease);
}
.accordion .accordion-title:hover,.accordion .accordion-title:focus{background:transparent;color:var(--primary);}
.accordion .accordion-title::before{
  content:"";position:absolute;right:10px;top:50%;width:12px;height:2px;
  background:var(--muted);transform:translateY(-50%);
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.accordion .accordion-title::after{
  content:"";position:absolute;right:15px;top:50%;width:2px;height:12px;
  background:var(--muted);transform:translateY(-50%);
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.accordion .accordion-item.is-active .accordion-title{color:var(--primary);}
.accordion .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(90deg);opacity:0;}
.accordion .accordion-content{
  border:0;background:transparent;padding:0 40px 24px 0;
  font-size:16px;color:var(--body-text);line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--primary-soft);
  padding:72px 0;
  text-align:center;
}
.cta-band h2{font-size:32px;margin-bottom:14px;}
.cta-band p{max-width:620px;margin:0 auto 28px;font-size:16px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#D7D4CF;padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:48px;
}
.footer-col h4{
  color:#fff;font-size:13px;letter-spacing:.14em;font-weight:600;
  font-family:var(--font-sans);margin-bottom:18px;
}
.footer-col p{font-size:14.5px;color:#9AA0AB;line-height:1.8;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:#fff;color:var(--ink);}
.footer-brand .brand-text{color:#fff;font-size:18px;}
.footer-col a{
  display:block;font-size:15px;color:#D7D4CF;padding:6px 0;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--teal);transform:translateX(2px);}
.footer-search{
  position:relative;margin-top:16px;display:flex;align-items:center;
  height:44px;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-pill);
  padding:0 8px 0 16px;
}
.footer-search .search-icon{display:flex;color:#9AA0AB;}
.footer-search input{
  flex:1;border:0;background:transparent;height:42px;padding:0 10px;
  color:#fff;font-size:15px;outline:none;
}
.footer-search input::placeholder{color:#7C828C;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 30px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#8B919B;
}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;
  border-radius:50%;border:0;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;
  transition:opacity .2s var(--ease),visibility .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{background:var(--primary-hover);transform:translateY(-2px);}

/* ---------- 进入动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
.is-hidden{display:none !important;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .main-nav a{padding:8px 9px;font-size:14.5px;}
}
@media (max-width:1023px){
  .nav-search{max-width:340px;}
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .nav-cta{display:none;}
  .cat-hero h1{font-size:34px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 20px;}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding-bottom:20px;}
  .stat:nth-last-child(-n+2){border-bottom:0;padding-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{min-height:60px;gap:12px;}
  .brand-text{font-size:17px;}
  .nav-search{display:none;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .section-head h2{font-size:24px;}
  .cat-hero{padding:52px 0 56px;}
  .cat-hero h1{font-size:30px;}
  .cat-hero .hero-sub{font-size:16px;}
  .benefit-body{padding:20px 20px 22px;}
  .benefit-body h3{font-size:19px;}
  .stats-strip{padding:28px 22px;}
  .stats-grid{grid-template-columns:1fr;}
  .stat{border-bottom:1px solid var(--line);padding-bottom:18px;}
  .stat:last-child{border-bottom:0;padding-bottom:0;}
  .stat b{font-size:32px;}
  .cta-band{padding:56px 0;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
/* ============ app.css ============ */
:root{
  --ink:#0E1014;
  --ink-2:#2A2E36;
  --text:#5B6270;
  --muted:#9AA0AB;
  --line:#E6E3DE;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --primary:#5B3DF5;
  --primary-hover:#6E52FF;
  --primary-soft:#EFEBFF;
  --teal:#12B5A0;
  --teal-soft:#E4F6F3;
  --success:#1F9D6B;
  --warn:#C97B1E;
  --danger:#C2443B;
  --r-sm:6px;
  --r-md:12px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,16,20,.05);
  --sh-2:0 8px 24px -12px rgba(14,16,20,.16);
  --sh-3:0 24px 60px -28px rgba(14,16,20,.28);
  --focus:0 0 0 3px rgba(91,61,245,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  text-align:left;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-family:var(--serif);
  color:var(--ink);
  margin:0;
  line-height:1.22;
  letter-spacing:-.015em;
  font-weight:700;
}
p{margin:0 0 1.25em;}
img{display:block;max-width:100%;height:auto;background:var(--primary-soft);}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--primary-hover);}
ul{margin:0;padding:0;list-style:none;}
button{font:inherit;}
input,button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:var(--r-sm);}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--r-md);
  font-size:16px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0) scale(.98);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-ghost:active{transform:scale(.98);}
.btn-light{background:#fff;color:var(--ink);border-color:#fff;}
.btn-light:hover{background:var(--teal);border-color:var(--teal);color:var(--ink);transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:15px;border-radius:10px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:600;font-size:15.5px;color:var(--primary);
  position:relative;
}
.link-more::after{
  content:"";position:absolute;left:0;right:22px;bottom:-3px;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.link-more:hover::after{transform:scaleX(1);}

/* ---------- 徽章 / 标签 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:4px 10px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:var(--teal-soft);color:var(--teal);white-space:nowrap;
}
.chip--purple{background:var(--primary-soft);color:var(--primary);}
.chip--dark{background:var(--ink);color:#fff;}
.chip--line{background:transparent;border:1px solid var(--line);color:var(--text);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .26s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-inner{
  display:flex;align-items:center;gap:20px;height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-family:var(--serif);
  font-weight:800;font-size:15px;letter-spacing:.02em;
}
.brand-text{
  font-family:var(--serif);font-weight:700;font-size:20px;color:var(--ink);
  letter-spacing:-.01em;white-space:nowrap;
}
.brand:hover .brand-text{color:var(--primary);}

.nav-search{position:relative;flex:1 1 auto;max-width:520px;min-width:180px;}
.nav-search form{
  display:flex;align-items:center;gap:8px;height:44px;
  padding:0 6px 0 14px;border-radius:var(--r-pill);
  background:var(--paper);border:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search form:focus-within{
  background:#fff;border-color:var(--primary);box-shadow:var(--focus);
}
.nav-search .search-icon{display:flex;color:var(--muted);flex:0 0 auto;}
.nav-search input{
  flex:1 1 auto;border:0;background:transparent;height:100%;
  font-size:15px;color:var(--ink-2);min-width:0;
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search input:focus{outline:none;box-shadow:none;}
.nav-search .search-btn{
  flex:0 0 auto;height:32px;padding:0 16px;border:0;border-radius:var(--r-pill);
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  opacity:0;transform:translateX(4px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.nav-search form:focus-within .search-btn{opacity:1;transform:none;}
.nav-search .search-btn:hover{background:var(--primary-hover);}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  padding:8px 12px;border-radius:var(--r-pill);
  font-size:15px;color:var(--ink-2);white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.main-nav a:hover{background:var(--primary-soft);color:var(--primary);}
.main-nav a.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.nav-cta{display:none;}
.header-cta{flex:0 0 auto;padding:12px 22px;font-size:15px;}

.search-toggle,.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-md);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  cursor:pointer;flex:0 0 auto;
}
.nav-toggle{flex-direction:column;gap:4px;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-search{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:14px 0 18px;
}
.mobile-search.is-open{display:block;animation:slideDown .22s var(--ease);}
@keyframes slideDown{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:none;}}
.mobile-search form{
  display:flex;align-items:center;gap:10px;
  height:46px;padding:0 8px 0 16px;border-radius:var(--r-pill);
  background:var(--paper);border:1px solid var(--line);
}
.mobile-search input{flex:1 1 auto;border:0;background:transparent;font-size:15px;color:var(--ink-2);min-width:0;}
.mobile-search input:focus{outline:none;}
.mobile-search .search-icon{color:var(--muted);display:flex;}
.hot-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.hot-tags a{font-size:13px;padding:6px 12px;border-radius:var(--r-pill);background:var(--paper);color:var(--text);border:1px solid var(--line);}
.hot-tags a:hover{background:var(--teal-soft);color:var(--teal);border-color:transparent;}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--ink);overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(105deg,rgba(14,16,20,.95) 0%,rgba(14,16,20,.84) 46%,rgba(14,16,20,.58) 100%),url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center right;
}
.hero-inner{position:relative;z-index:2;padding:88px 0 84px;max-width:840px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--muted);margin-bottom:20px;
}
.breadcrumb a{color:rgba(255,255,255,.68);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.34);}
.breadcrumb .current{color:#fff;}
.hero h1{
  color:#fff;
  font-size:clamp(30px,4.4vw,44px);
  letter-spacing:-.02em;
  margin:14px 0 18px;
}
.hero-sub{
  color:rgba(255,255,255,.82);
  font-size:18px;
  line-height:1.7;
  max-width:620px;
  margin:0 0 6px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:48px;
  margin-top:52px;padding-top:26px;
  border-top:1px solid rgba(255,255,255,.14);
}
.hero-stats .stat-num{
  font-family:var(--sans);font-weight:700;font-size:26px;color:#fff;
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stats .stat-label{font-size:13.5px;color:rgba(255,255,255,.6);margin-top:4px;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--paper{background:var(--paper);}
.section--white{background:#fff;}
.section-head{max-width:720px;margin-bottom:52px;}
.section-head h2{font-size:clamp(24px,3vw,32px);margin:12px 0 14px;}
.section-head p{margin:0;font-size:16.5px;}
.eyebrow{
  font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--teal);text-transform:uppercase;
}

/* ---------- 1 + 3 功能分组 ---------- */
.split{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:64px;align-items:start;}
.split-aside h2{font-size:clamp(24px,2.8vw,30px);margin-bottom:18px;}
.split-aside p{font-size:16px;color:var(--text);}
.feature-list{border-bottom:1px solid var(--line);}
.feature-row{
  display:flex;gap:20px;padding:26px 20px;
  border-top:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.feature-row:hover{background:var(--primary-soft);box-shadow:inset 3px 0 0 var(--primary);}
.feature-icon{
  flex:0 0 auto;width:42px;height:42px;border-radius:var(--r-md);
  display:grid;place-items:center;background:#fff;border:1px solid var(--line);color:var(--primary);
}
.feature-row h3{font-size:19px;margin-bottom:6px;}
.feature-row p{margin:0;font-size:15.5px;line-height:1.75;}

/* ---------- 场景卡片 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.3);}
.scene-media{overflow:hidden;}
.scene-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .32s var(--ease);}
.scene-card:hover .scene-media img{transform:scale(1.03);}
.scene-body{padding:20px 20px 22px;}
.scene-body h3{font-size:18px;margin-bottom:8px;}
.scene-body p{font-size:15px;line-height:1.75;margin:0 0 14px;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:860px;margin:0 auto;padding-left:42px;}
.timeline::before{
  content:"";position:absolute;left:12px;top:10px;bottom:10px;width:1px;background:var(--line);
}
.tl-item{position:relative;padding-bottom:40px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-36px;top:7px;width:10px;height:10px;
  border-radius:50%;background:var(--teal);
}
.tl-item.is-latest::before{
  width:14px;height:14px;left:-38px;top:5px;
  box-shadow:0 0 0 6px rgba(18,181,160,.16);
}
.tl-meta{
  display:flex;align-items:center;gap:12px;margin-bottom:8px;
  font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.tl-step{
  font-weight:700;color:var(--teal);letter-spacing:.08em;font-size:13px;
}
.tl-item h3{font-size:20px;margin-bottom:8px;}
.tl-item p{margin:0 0 10px;font-size:15.5px;line-height:1.78;}

/* ---------- 帮助主题索引 ---------- */
.topic-wrap{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:56px;align-items:start;}
.topic-side{position:sticky;top:96px;}
.topic-side h2{font-size:24px;margin-bottom:14px;}
.topic-side p{font-size:15.5px;}
.topic-anchors{display:flex;flex-direction:column;gap:2px;margin:22px 0 26px;}
.topic-anchors a{
  font-size:15px;color:var(--ink-2);padding:9px 12px;border-radius:10px;
  border-left:2px solid transparent;transition:all .2s var(--ease);
}
.topic-anchors a:hover{background:var(--primary-soft);color:var(--primary);border-left-color:var(--primary);}
.topic-group + .topic-group{margin-top:44px;}
.topic-group h3{
  font-size:15px;letter-spacing:.1em;color:var(--muted);
  font-family:var(--sans);font-weight:700;margin-bottom:10px;
}
.topic-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 16px;border-top:1px solid var(--line);
  transition:background .2s var(--ease);
}
.topic-group .topic-row:last-child{border-bottom:1px solid var(--line);}
.topic-row:hover{background:var(--paper);}
.topic-row .topic-title{
  font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink-2);
  display:block;margin-bottom:4px;transition:color .2s var(--ease);
}
.topic-row:hover .topic-title{color:var(--primary);}
.topic-row .topic-desc{font-size:14.5px;color:var(--text);margin:0;line-height:1.7;}
.topic-arrow{flex:0 0 auto;color:var(--muted);transition:transform .2s var(--ease),color .2s var(--ease);}
.topic-row:hover .topic-arrow{color:var(--primary);transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:780px;margin:0 auto;border-top:1px solid var(--line);
}
.faq-list .accordion-item{border-bottom:1px solid var(--line);}
.faq-list .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;margin:0;border:0;background:none;
  font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink-2);
  line-height:1.5;transition:color .2s var(--ease);
}
.faq-list .accordion-title::before{display:none;}
.faq-list .accordion-title:hover{color:var(--primary);}
.faq-list .accordion-title[aria-expanded="true"]{color:var(--primary);}
.faq-icon{
  position:relative;flex:0 0 auto;width:18px;height:18px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{width:14px;height:1.6px;transform:translate(-50%,-50%);}
.faq-icon::after{width:1.6px;height:14px;transform:translate(-50%,-50%);}
.faq-list .accordion-title[aria-expanded="true"] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-list .accordion-content{padding:0 4px 24px;font-size:16px;line-height:1.85;color:var(--text);border:0;background:none;}
.faq-list .accordion-content p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--primary-soft);
  border-radius:var(--r-lg);
  padding:60px 40px;
  text-align:center;
}
.cta-band h2{font-size:clamp(23px,2.8vw,30px);margin-bottom:14px;}
.cta-band p{max-width:640px;margin:0 auto 28px;font-size:16.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:#fff;color:var(--ink);}
.footer-brand .brand-text{color:#fff;font-size:19px;}
.footer-col p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.64);margin:0;}
.footer-col h4{
  font-family:var(--sans);font-size:13px;font-weight:700;letter-spacing:.12em;
  color:rgba(255,255,255,.5);margin-bottom:16px;text-transform:uppercase;
}
.footer-col a{
  display:block;font-size:15px;color:rgba(255,255,255,.78);
  margin-bottom:10px;transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--teal);transform:translateX(2px);}
.footer-search{
  display:flex;align-items:center;gap:10px;height:44px;
  padding:0 8px 0 14px;margin-top:16px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
}
.footer-search .search-icon{display:flex;color:rgba(255,255,255,.5);}
.footer-search input{
  flex:1 1 auto;border:0;background:transparent;color:#fff;font-size:14.5px;min-width:0;
}
.footer-search input::placeholder{color:rgba(255,255,255,.45);}
.footer-search input:focus{outline:none;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;
  margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:90;
  width:48px;height:48px;border-radius:50%;border:0;
  background:var(--primary);color:#fff;cursor:pointer;
  display:grid;place-items:center;
  box-shadow:var(--sh-2);
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.back-top.is-visible{opacity:1;pointer-events:auto;transform:none;}
.back-top:hover{background:var(--primary-hover);}

/* ---------- 进入视口动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
.hero .reveal{transform:translateY(24px);}
.hero .reveal.is-in{transform:none;}
.hero .reveal:nth-child(2){transition-delay:.06s;}
.hero .reveal:nth-child(3){transition-delay:.12s;}
.hero .reveal:nth-child(4){transition-delay:.18s;}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .container{max-width:1320px;}
}
@media (max-width:1199px){
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{gap:44px;}
  .topic-wrap{gap:40px;}
}
@media (max-width:1023px){
  body{font-size:16px;}
  .header-inner{height:60px;gap:12px;}
  .nav-search{display:none;}
  .header-cta{display:none;}
  .search-toggle,.nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:60px;left:0;right:0;
    height:calc(100vh - 60px);
    flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:12px 20px 32px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    overflow-y:auto;
    opacity:0;pointer-events:none;transform:translateY(-10px);
    transition:opacity .24s var(--ease),transform .24s var(--ease);
  }
  .main-nav.is-open{opacity:1;pointer-events:auto;transform:none;}
  .main-nav a{padding:17px 4px;border-bottom:1px solid var(--line);border-radius:0;font-size:16px;}
  .main-nav a.is-active{background:transparent;border-left:3px solid var(--primary);padding-left:12px;}
  .main-nav .nav-cta{
    display:inline-flex;margin-top:22px;border-bottom:0;
    justify-content:center;padding:14px 24px;border-radius:var(--r-md);
  }
  .hero-inner{padding:64px 0 62px;}
  .hero-stats{gap:34px;margin-top:40px;}
  .section{padding:68px 0;}
  .section--tight{padding:56px 0;}
  .split{grid-template-columns:minmax(0,1fr);gap:34px;}
  .topic-wrap{grid-template-columns:minmax(0,1fr);gap:32px;}
  .topic-side{position:static;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
}
@media (max-width:639px){
  .container{padding:0 20px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:32px;height:32px;font-size:13px;}
  .hero-inner{padding:52px 0 52px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:24px;}
  .hero-stats .stat-num{font-size:22px;}
  .scene-grid{grid-template-columns:minmax(0,1fr);}
  .timeline{padding-left:30px;}
  .timeline::before{left:8px;}
  .tl-item::before{left:-28px;}
  .tl-item.is-latest::before{left:-30px;}
  .cta-band{padding:44px 22px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .footer-bottom{flex-direction:column;gap:10px;}
  .back-top{right:16px;bottom:20px;width:44px;height:44px;}
  .faq-list .accordion-title{font-size:16px;padding:18px 2px;}
}