/* roulang page: index */
:root{
  --brand:#6C4BFF;
  --brand-deep:#4A2FD6;
  --accent:#FF7A45;
  --ink:#12131A;
  --text:#4A4F5C;
  --muted:#8A8F9E;
  --bg:#F7F7FB;
  --card:#FFFFFF;
  --line:#ECEAF7;
  --tint:#F3F0FF;
  --success:#16C79A;
  --danger:#FF4D4F;
  --dark:#12131A;
  --dark-text:#C9CCDA;
  --r-xs:12px;
  --r-sm:14px;
  --r-md:18px;
  --r-lg:24px;
  --shadow:0 8px 24px rgba(18,19,26,.06);
  --shadow-hover:0 16px 36px rgba(108,75,255,.14);
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5{
  margin:0;
  color:var(--ink);
  font-weight:700;
  line-height:1.3;
}
h1{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;}
h3{font-size:18px;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;height:auto;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:3px solid rgba(108,75,255,.45);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

section{position:relative;}
.sec{padding:88px 0;}
.sec--tight{padding:64px 0;}
.sec--dark{background:var(--dark);}
.sec--dark h2,.sec--dark h3{color:#fff;}
.sec--dark p{color:var(--dark-text);}

.sec-head{margin-bottom:44px;max-width:760px;}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-head--row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--tint);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:14px;
}
.eyebrow--dark{background:rgba(108,75,255,.18);color:#C6B8FF;}
h2.bar-title{
  position:relative;
  padding-left:16px;
}
h2.bar-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.18em;
  bottom:.18em;
  width:3px;
  border-radius:3px;
  background:var(--brand);
}
.sec-head p{margin-top:14px;font-size:15.5px;color:var(--text);}
.sec-head--center p{margin-left:auto;margin-right:auto;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(18,19,26,.06);}
.header-inner{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.header-left{display:flex;align-items:center;gap:28px;min-width:0;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  font-size:18px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:0;
}
.brand:hover{color:var(--ink);}
.brand-dot{
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--brand);
  flex-shrink:0;
}
.brand-text em{font-style:normal;color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:2px;}
.main-nav .nav-link{
  position:relative;
  display:block;
  padding:8px 13px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  border-radius:10px;
  white-space:nowrap;
  transition:color .15s ease,background-color .15s ease;
}
.main-nav .nav-link:hover{color:var(--brand);background:var(--tint);}
.main-nav .nav-link.active{color:var(--brand);font-weight:600;}
.main-nav .nav-link.active::after{
  content:"";
  position:absolute;
  left:13px;
  right:13px;
  bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.header-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-search{
  position:relative;
  width:200px;
  transition:width .25s ease;
}
.nav-search:focus-within{width:280px;}
.nav-search svg{
  position:absolute;
  left:14px;
  top:50%;
  transform:translateY(-50%);
  color:var(--muted);
  pointer-events:none;
}
.nav-search input{
  width:100%;
  height:40px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg);
  padding:0 16px 0 40px;
  font-size:14px;
  color:var(--ink);
  outline:none;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search input:focus{
  background:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(108,75,255,.18);
}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:var(--r-xs);
  border:1px solid var(--line);
  background:#fff;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  color:var(--ink);
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--ink);
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 按钮 ============ */
.btn-brand,
.btn-ink,
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15.5px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand{
  background:var(--brand);
  border:1.5px solid var(--brand);
  color:#fff;
}
.btn-brand:hover{
  background:var(--brand-deep);
  border-color:var(--brand-deep);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-hover);
}
.btn-ink{
  background:#fff;
  border:1.5px solid var(--ink);
  color:var(--ink);
}
.btn-ink:hover{
  background:var(--ink);
  border-color:var(--ink);
  color:#fff;
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;
  border:1.5px solid transparent;
  color:var(--brand);
}
.btn-ghost:hover{background:var(--tint);color:var(--brand-deep);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 首屏 ============ */
.hero{
  padding:64px 0 76px;
  overflow:hidden;
  background:
    radial-gradient(720px 420px at 88% 6%, rgba(108,75,255,.13), transparent 62%),
    radial-gradient(520px 340px at 4% 82%, rgba(255,122,69,.09), transparent 66%),
    var(--bg);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(108,75,255,.16) 1px, transparent 1px);
  background-size:26px 26px;
  opacity:.5;
  mask-image:linear-gradient(115deg, rgba(0,0,0,.9), transparent 58%);
  -webkit-mask-image:linear-gradient(115deg, rgba(0,0,0,.9), transparent 58%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:1;}
.hero h1{margin-bottom:20px;}
.hero h1 .hl{color:var(--brand);}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  max-width:560px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
}
.trust-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:500;
  color:var(--ink);
}
.trust-item svg{color:var(--brand);flex-shrink:0;}

.hero-visual{position:relative;padding:0 0 46px 0;}
.hero-visual__main{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  border:1px solid var(--line);
  aspect-ratio:16/11;
  background:#EDEBFA;
}
.hero-visual__main img{width:100%;height:100%;object-fit:cover;}
.hero-visual__main::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(160deg, rgba(18,19,26,.34) 0%, rgba(18,19,26,.06) 45%, rgba(108,75,255,.22) 100%);
}
.hero-visual__card{
  position:absolute;
  right:-8px;
  bottom:0;
  width:min(280px,68%);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-hover);
  overflow:hidden;
  z-index:2;
}
.hero-visual__card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.hero-visual__card-body{padding:14px 16px 16px;}
.hero-visual__card-body strong{
  display:block;
  font-size:14px;
  color:var(--ink);
  font-weight:700;
  margin-bottom:2px;
}
.hero-visual__card-body span{font-size:12.5px;color:var(--muted);}
.hero-visual__chip{
  position:absolute;
  left:-14px;
  top:34px;
  width:64px;
  height:64px;
  border-radius:14px;
  background:var(--accent);
  clip-path:polygon(0 0,100% 0,100% 76%,78% 100%,0 100%);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-weight:800;
  font-size:13px;
  line-height:1.15;
  text-align:center;
  box-shadow:0 12px 26px rgba(255,122,69,.32);
  z-index:3;
}
.slant-block{
  position:absolute;
  left:-22px;
  bottom:18px;
  width:150px;
  height:74px;
  background:linear-gradient(135deg,var(--brand),#8C74FF);
  clip-path:polygon(0 0,100% 0,100% 100%,16% 100%);
  opacity:.16;
  border-radius:8px;
  z-index:0;
}

/* ============ 痛点 ============ */
.pain-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.pain-item{
  display:grid;
  grid-template-columns:72px 1fr;
  gap:18px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px 24px 24px 20px;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.pain-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#DCD5FB;}
.pain-item__num{
  font-size:26px;
  font-weight:800;
  color:var(--brand);
  opacity:.9;
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.pain-item h3{margin-bottom:8px;font-size:18px;}
.pain-item p{font-size:14.8px;line-height:1.78;color:var(--text);margin:0;}

/* ============ 解决方案 ============ */
.solution-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:48px 0;
  border-top:1px solid var(--line);
}
.solution-row:first-of-type{border-top:none;padding-top:0;}
.solution-row:last-of-type{padding-bottom:0;}
.solution-row--reverse .solution-media{order:2;}
.solution-media{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:16/10;
  background:#EDEBFA;
}
.solution-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.solution-media:hover img{transform:scale(1.04);}
.solution-index{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  color:var(--accent);
  margin-bottom:10px;
  font-variant-numeric:tabular-nums;
}
.solution-body h3{font-size:22px;margin-bottom:12px;}
.solution-body > p{font-size:15.5px;margin-bottom:18px;}
.feature-list{display:grid;gap:12px;}
.feature-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15px;
  color:var(--text);
}
.feature-list svg{color:var(--success);flex-shrink:0;margin-top:5px;}

/* ============ 成果 ============ */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-bottom:44px;
}
.stat-item{
  border-left:1px solid rgba(201,204,218,.22);
  padding-left:22px;
}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-num{
  font-size:clamp(34px,4.4vw,52px);
  font-weight:800;
  line-height:1.1;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.stat-num--accent{color:var(--accent);}
.stat-label{
  display:block;
  margin-top:10px;
  font-size:14.5px;
  color:var(--dark-text);
}
.progress-track{
  height:8px;
  border-radius:999px;
  background:rgba(201,204,218,.18);
  overflow:hidden;
}
.progress-fill{
  height:100%;
  width:86%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--brand),#9C86FF);
}
.progress-caption{
  display:flex;
  justify-content:space-between;
  gap:16px;
  margin-top:12px;
  font-size:13px;
  color:var(--dark-text);
  font-variant-numeric:tabular-nums;
}

/* ============ 证言 ============ */
.quote-main{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  border-radius:var(--r-md);
  padding:32px 34px;
  box-shadow:var(--shadow);
}
.quote-main blockquote{
  margin:0 0 24px;
  font-size:18px;
  line-height:1.85;
  color:var(--ink);
  font-weight:500;
}
.quote-person{display:flex;align-items:center;gap:14px;}
.avatar{
  width:48px;
  height:48px;
  border-radius:50%;
  object-fit:cover;
  border:2px solid #fff;
  box-shadow:0 0 0 1px var(--line);
  flex-shrink:0;
}
.quote-person strong{display:block;font-size:15px;color:var(--ink);}
.quote-person span{font-size:13px;color:var(--muted);}
.quote-sub{
  display:grid;
  gap:18px;
}
.quote-card{
  background:var(--card);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  border-radius:var(--r-md);
  padding:22px 24px;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.quote-card:nth-child(2){margin-left:24px;}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.quote-card p{font-size:15px;line-height:1.8;color:var(--text);margin-bottom:16px;}
.quote-card .quote-person span{font-size:12.5px;}

/* ============ 资讯卡片 ============ */
.news-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#DCD5FB;}
.news-card__media{
  display:block;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EDEBFA;
  position:relative;
}
.news-card__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease;
}
.news-card:hover .news-card__media img{transform:scale(1.04);}
.news-card__body{
  display:flex;
  flex-direction:column;
  flex:1;
  padding:20px 22px 22px;
}
.badge-pill{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--tint);
  color:var(--brand);
  font-size:12.5px;
  font-weight:600;
  margin-bottom:12px;
}
.news-card__title{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card__title a{color:var(--ink);}
.news-card__title a:hover{color:var(--brand);}
.news-card__desc{
  font-size:14.5px;
  line-height:1.7;
  color:var(--text);
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card__meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.news-card__meta svg{color:var(--muted);flex-shrink:0;}
.news-empty{
  background:var(--card);
  border:1px dashed #D8D3EE;
  border-radius:var(--r-md);
  padding:52px 28px;
  text-align:center;
}
.news-empty__icon{
  width:64px;
  height:64px;
  margin:0 auto 18px;
  border-radius:18px;
  background:var(--tint);
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
}
.news-empty p{font-size:15px;color:var(--text);margin-bottom:18px;}
.sec-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
  white-space:nowrap;
}
.sec-link:hover{color:var(--brand-deep);}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.faq-accordion .accordion-item:last-child{margin-bottom:0;}
.faq-accordion .accordion-button{
  position:relative;
  width:100%;
  background:#fff;
  color:var(--ink);
  font-size:16px;
  font-weight:600;
  padding:18px 56px 18px 24px;
  border:none;
  box-shadow:none;
  transition:background-color .2s ease,color .2s ease;
}
.faq-accordion .accordion-button::before{
  content:"";
  position:absolute;
  left:0;
  top:15px;
  bottom:15px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
}
.faq-accordion .accordion-button::after{
  content:"+";
  background-image:none;
  width:28px;
  height:28px;
  font-size:20px;
  font-weight:400;
  line-height:1;
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-left:auto;
  transition:transform .25s ease,color .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed){
  background:var(--tint);
  color:var(--brand);
  box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px rgba(108,75,255,.18);z-index:3;}
.faq-accordion .accordion-body{
  padding:16px 24px 20px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text);
  background:#fff;
  border-top:1px solid var(--line);
}

/* ============ 尾部 CTA ============ */
.cta-band{
  background:linear-gradient(115deg,var(--brand) 0%,#7C5CFF 52%,#5438E8 100%);
  padding:76px 0;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;
  top:-40px;
  width:320px;
  height:260px;
  background:rgba(255,255,255,.14);
  clip-path:polygon(22% 0,100% 0,100% 100%,0 100%);
  border-radius:12px;
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:1;}
.cta-band h2{color:#fff;margin-bottom:14px;max-width:620px;}
.cta-band p{color:rgba(255,255,255,.86);max-width:600px;margin-bottom:28px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-ink{background:#fff;border-color:#fff;color:var(--brand);}
.cta-band .btn-ink:hover{background:var(--ink);border-color:var(--ink);color:#fff;}
.cta-band .btn-outline-light-2{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-sm);
  border:1.5px solid rgba(255,255,255,.7);
  color:#fff;
  font-size:15.5px;
  font-weight:600;
  background:transparent;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,border-color .2s ease;
}
.cta-band .btn-outline-light-2:hover{
  background:#fff;
  border-color:#fff;
  color:var(--brand);
  transform:translateY(-1px);
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:var(--dark-text);
  padding:64px 0 0;
}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand:hover{color:#fff;}
.footer-brand .brand-dot{background:var(--brand);}
.footer-brand em{font-style:normal;color:#A48CFF;}
.footer-desc{
  font-size:13.5px;
  line-height:1.85;
  color:var(--dark-text);
  margin:0;
}
.footer-list{display:grid;gap:10px;}
.footer-list a{
  font-size:13.5px;
  color:var(--dark-text);
  transition:color .2s ease,padding-left .2s ease;
}
.footer-list a:hover{color:var(--brand);padding-left:4px;}
.footer-list li{font-size:13.5px;color:var(--dark-text);}
.footer-search{
  position:relative;
  margin-top:16px;
}
.footer-search input{
  width:100%;
  height:44px;
  border-radius:var(--r-xs);
  border:1px solid rgba(201,204,218,.22);
  background:rgba(255,255,255,.05);
  color:#fff;
  font-size:14px;
  padding:0 14px 0 40px;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-search input::placeholder{color:#8A8F9E;}
.footer-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,75,255,.24);}
.footer-search svg{
  position:absolute;
  left:13px;
  top:50%;
  transform:translateY(-50%);
  color:#8A8F9E;
  pointer-events:none;
}
.footer-bottom{
  margin-top:52px;
  border-top:1px solid rgba(201,204,218,.16);
  padding:22px 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 20px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:#8A8F9E;
}
.footer-bottom a{color:#8A8F9E;}
.footer-bottom a:hover{color:var(--brand);}

/* ============ 移动端抽屉 ============ */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:1060;
  visibility:hidden;
  pointer-events:none;
}
.mobile-drawer.is-open{visibility:visible;pointer-events:auto;}
.mobile-drawer__mask{
  position:absolute;
  inset:0;
  background:rgba(18,19,26,.5);
  opacity:0;
  transition:opacity .25s ease;
}
.mobile-drawer.is-open .mobile-drawer__mask{opacity:1;}
.mobile-drawer__panel{
  position:absolute;
  top:0;
  right:0;
  bottom:0;
  width:min(340px,86vw);
  background:#fff;
  padding:20px 20px 28px;
  display:flex;
  flex-direction:column;
  gap:18px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .28s ease;
  box-shadow:-16px 0 40px rgba(18,19,26,.18);
}
.mobile-drawer.is-open .mobile-drawer__panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{
  width:38px;
  height:38px;
  border-radius:var(--r-xs);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  font-size:20px;
  line-height:1;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.mobile-search{position:relative;}
.mobile-search input{
  width:100%;
  height:44px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg);
  padding:0 16px 0 40px;
  font-size:14px;
  color:var(--ink);
  outline:none;
}
.mobile-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,75,255,.18);background:#fff;}
.mobile-search svg{
  position:absolute;
  left:14px;
  top:50%;
  transform:translateY(-50%);
  color:var(--muted);
  pointer-events:none;
}
.mobile-nav{display:grid;gap:4px;}
.mobile-nav a{
  display:block;
  padding:13px 14px;
  border-radius:var(--r-xs);
  font-size:15.5px;
  font-weight:500;
  color:var(--text);
  transition:background-color .18s ease,color .18s ease;
}
.mobile-nav a:hover{background:var(--tint);color:var(--brand);}
.mobile-nav a.active{background:var(--tint);color:var(--brand);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:12px;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-search{width:180px;}
  .nav-search:focus-within{width:220px;}
  .main-nav .nav-link{padding:8px 10px;font-size:14.5px;}
  .hero{padding:56px 0 68px;}
  .pain-list{gap:16px;}
}

@media (max-width:991.98px){
  .sec{padding:64px 0;}
  .main-nav{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .header-right .btn-brand{display:none;}
  .header-left{gap:12px;}
  .hero{padding:48px 0 60px;}
  .hero-sub{max-width:none;}
  .hero-visual{margin-top:44px;padding-bottom:40px;}
  .pain-list{grid-template-columns:1fr;}
  .solution-row{
    grid-template-columns:1fr;
    gap:28px;
    padding:36px 0;
  }
  .solution-row--reverse .solution-media{order:0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 20px;}
  .stat-item:nth-child(3){border-left:none;padding-left:0;}
  .quote-card:nth-child(2){margin-left:0;}
  .quote-sub{grid-template-columns:1fr;gap:16px;}
  .cta-band{padding:60px 0;}
  .site-footer{padding-top:52px;}
  .footer-bottom{margin-top:40px;}
}

@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
  .sec{padding:48px 0;}
  .sec-head{margin-bottom:30px;}
  .sec-head--row{flex-direction:column;align-items:flex-start;gap:12px;}
  .hero{padding:36px 0 48px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn-brand,
  .hero-actions .btn-ink{width:100%;}
  .btn-brand,.btn-ink,.btn-ghost{height:44px;}
  .trust-row{gap:10px 18px;}
  .hero-visual__card{width:min(232px,74%);right:0;}
  .hero-visual__chip{width:54px;height:54px;font-size:12px;left:-8px;}
  .pain-item{grid-template-columns:56px 1fr;gap:14px;padding:20px 18px;}
  .pain-item__num{font-size:22px;}
  .stats-grid{grid-template-columns:1fr;gap:22px;}
  .stat-item{border-left:none;padding-left:0;border-top:1px solid rgba(201,204,218,.18);padding-top:18px;}
  .stat-item:first-child{border-top:none;padding-top:0;}
  .quote-main{padding:24px 20px;}
  .quote-main blockquote{font-size:16.5px;}
  .news-card__body{padding:18px;}
  .faq-accordion .accordion-button{font-size:15px;padding:16px 50px 16px 20px;}
  .cta-band{padding:52px 0;}
  .cta-actions .btn-ink,
  .cta-band .btn-outline-light-2{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:479.98px){
  h1{font-size:26px;}
  .brand{font-size:16px;}
  .hero-visual__main{aspect-ratio:4/3;}
  .hero-visual__chip{display:none;}
  .trust-item{font-size:13.5px;}
}

/* roulang page: article */
:root{
  --brand:#6C4BFF;
  --brand-deep:#4A2FD6;
  --brand-soft:#F3F0FF;
  --brand-light:#B7A6FF;
  --accent:#FF7A45;
  --ok:#16C79A;
  --warn:#FF4D4F;
  --bg:#F7F7FB;
  --card:#FFFFFF;
  --line:#ECEAF7;
  --ink:#12131A;
  --text:#4A4F5C;
  --muted:#8A8F9E;
  --ink-soft:#C9CCDA;
  --input-line:#DCD9EA;
  --r-xl:24px;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --shadow:0 8px 24px rgba(18,19,26,.06);
  --shadow-hover:0 16px 36px rgba(108,75,255,.14);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);}
p{margin:0;}
a{color:var(--brand);text-decoration:none;transition:color .15s ease;}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;}
input{font:inherit;}
time,.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(108,75,255,.35);border-radius:8px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  border:1.5px solid var(--brand);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-brand:active{transform:translateY(0);}
.btn-brand.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm);}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  background:#fff;color:var(--ink);font-weight:600;font-size:15px;
  border:1.5px solid var(--ink);transition:all .2s ease;
}
.btn-outline:hover{background:var(--ink);color:#fff;}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  background:transparent;color:#fff;font-weight:600;font-size:15px;
  border:1.5px solid rgba(255,255,255,.4);transition:all .2s ease;
}
.btn-line:hover{background:#fff;color:var(--ink);border-color:#fff;}

/* header */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 4px 16px rgba(18,19,26,.06);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.header-left{display:flex;align-items:center;gap:26px;min-width:0;}
.header-right{display:flex;align-items:center;gap:12px;}
.brand{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:800;color:var(--ink);white-space:nowrap;}
.brand:hover{color:var(--ink);}
.brand-dot{width:10px;height:10px;border-radius:3px;background:var(--brand);box-shadow:0 0 0 4px rgba(108,75,255,.14);flex:none;}
.brand-text em{font-style:normal;color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:22px;}
.nav-link{position:relative;padding:6px 0;font-size:15px;color:var(--text);transition:color .15s ease;}
.nav-link:hover{color:var(--brand);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand);}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:200px;height:40px;padding:0 14px;
  background:var(--bg);border:1px solid var(--line);border-radius:999px;
  color:var(--muted);transition:border-color .2s ease,box-shadow .2s ease,width .25s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,75,255,.18);width:280px;}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);}
.nav-search input::placeholder{color:var(--muted);}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;align-items:center;justify-content:center;}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-drawer{
  position:fixed;top:0;right:0;z-index:1060;
  width:320px;max-width:88vw;height:100%;
  background:#fff;padding:20px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(102%);transition:transform .3s ease;
}
.nav-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head span{font-weight:700;color:var(--ink);}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font-size:18px;line-height:1;}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;background:var(--bg);border:1px solid var(--line);border-radius:999px;color:var(--muted);}
.drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{padding:12px 10px;border-radius:var(--r-sm);color:var(--text);font-size:15px;}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer-mask{position:fixed;inset:0;z-index:1050;background:rgba(18,19,26,.5);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;}
.drawer-mask.show{opacity:1;visibility:visible;}

/* main */
.page-main{padding:18px 0 0;}
.breadcrumb-bar{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb-bar a{color:var(--muted);}
.breadcrumb-bar a:hover{color:var(--brand);}
.breadcrumb-bar .sep{color:#C7C4D8;}
.crumb-current{max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);}
.article-header{max-width:860px;margin:24px auto 0;}
.badge-pill{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;}
.badge-pill.is-accent{background:#FFF1EA;color:#E8592A;}
.article-title{font-size:clamp(26px,3.6vw,42px);font-weight:800;line-height:1.28;color:var(--ink);margin-top:16px;}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:18px;font-size:13px;color:var(--muted);}
.article-meta .divider{width:1px;height:12px;background:var(--line);}
.article-cover{max-width:920px;margin:30px auto 0;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/9;box-shadow:var(--shadow);}
.article-cover img{width:100%;height:100%;object-fit:cover;}
.article-body{max-width:820px;margin:44px auto 0;font-size:17px;line-height:1.9;color:var(--text);}
.article-body p{margin:1.2em 0;}
.article-body h2{
  font-size:clamp(20px,2.3vw,27px);font-weight:700;color:var(--ink);
  line-height:1.4;margin:40px 0 16px;padding-left:12px;border-left:3px solid var(--brand);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink);margin:28px 0 10px;}
.article-body ul li,.article-body ol li{position:relative;margin:8px 0;}
.article-body ul li{padding-left:22px;}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.76em;width:7px;height:7px;border-radius:50%;background:var(--brand);}
.article-body ol{counter-reset:ai;}
.article-body ol li{padding-left:32px;}
.article-body ol li::before{
  counter-increment:ai;content:counter(ai);
  position:absolute;left:0;top:.42em;width:20px;height:20px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;
}
.article-body blockquote{
  margin:1.4em 0;padding:16px 24px;border-left:4px solid var(--brand);
  background:var(--bg);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink);
}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:2px;}
.article-body a:hover{color:var(--brand-deep);}
.article-body img{border-radius:var(--r-md);margin:1.4em auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--muted);text-align:center;}
.article-body .table-wrap{overflow-x:auto;margin:1.6em 0;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;}
.article-body table{width:100%;border-collapse:collapse;min-width:520px;}
.article-body th,.article-body td{padding:12px 16px;font-size:15px;text-align:left;border-bottom:1px solid var(--line);}
.article-body th{background:var(--brand-soft);color:var(--ink);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAFAFE;}
.empty-state{padding:40px 28px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);text-align:center;}
.empty-state h2{font-size:22px;margin-bottom:12px;padding:0;border:0;}
.empty-state p{margin-bottom:22px;color:var(--muted);font-size:15px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;}
.tag{display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text);}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}

/* blocks */
.section{margin-top:80px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;position:relative;padding-left:14px;}
.section-head h2::before{content:"";position:absolute;left:0;top:.22em;width:3px;height:1em;border-radius:2px;background:var(--brand);}
.section-head .more{font-size:14px;color:var(--brand);}
.section-head .more:hover{color:var(--brand-deep);}
.post-nav{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.post-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 24px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#DDD6FF;}
.post-card .label{font-size:13px;color:var(--muted);}
.post-card h3{font-size:17px;font-weight:600;margin-top:8px;line-height:1.5;}
.post-card p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#DDD6FF;}
.news-card .cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .cover img{transform:scale(1.04);}
.news-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.news-card .body h3{font-size:18px;font-weight:600;line-height:1.5;margin-top:12px;}
.news-card .body p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--muted);}
.news-card .foot{margin-top:auto;padding-top:16px;font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;}
.cta-band{position:relative;overflow:hidden;background:var(--ink);margin-top:80px;}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;padding:64px 0;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);}
.cta-band p{color:var(--ink-soft);margin-top:12px;font-size:15px;max-width:52ch;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-60px;width:380px;height:380px;
  background:linear-gradient(135deg,rgba(108,75,255,.75),rgba(108,75,255,0) 72%);
  clip-path:polygon(18% 0,100% 0,100% 82%,0 100%);
  z-index:1;
}

/* footer */
.site-footer{background:var(--ink);color:var(--ink-soft);padding:56px 0 0;font-size:14px;margin-top:0;}
.footer-brand{display:inline-flex;align-items:center;gap:8px;color:#fff;font-weight:800;font-size:17px;margin-bottom:14px;}
.footer-brand .brand-dot{background:var(--brand-light);box-shadow:0 0 0 4px rgba(183,166,255,.18);}
.footer-brand em{font-style:normal;color:var(--brand-light);}
.footer-desc{color:#8A8F9E;font-size:13px;line-height:1.8;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-list li{margin-bottom:10px;font-size:13px;color:#8A8F9E;}
.footer-list a{color:var(--ink-soft);}
.footer-list a:hover{color:var(--brand-light);}
.footer-search{display:flex;align-items:center;gap:8px;height:42px;margin-top:12px;padding:0 14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:999px;color:#8A8F9E;}
.footer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:13px;color:#fff;}
.footer-search input::placeholder{color:#8A8F9E;}
.footer-bottom{
  margin-top:38px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:#7C8093;
}

@media (max-width:1199.98px){
  .container{padding-left:20px;padding-right:20px;}
  .card-grid{grid-template-columns:repeat(3,1fr);gap:20px;}
}
@media (max-width:991.98px){
  .main-nav,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:56px;}
  .section{margin-top:64px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:52px 0;}
}
@media (max-width:767.98px){
  body{font-size:15px;}
  .container{padding-left:16px;padding-right:16px;}
  .article-body{font-size:16px;line-height:1.85;margin-top:32px;}
  .article-body h2{margin-top:32px;}
  .section{margin-top:48px;}
  .post-nav{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .cta-inner{padding:44px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn-brand,.cta-actions .btn-line{width:100%;}
  .crumb-current{max-width:22ch;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479.98px){
  .article-title{font-size:24px;}
  .article-meta{gap:8px;}
  .article-meta .divider{display:none;}
}

/* roulang page: category1 */
:root{
  --brand:#6C4BFF;
  --brand-dark:#4A2FD6;
  --brand-soft:#F3F0FF;
  --brand-line:#DED6FF;
  --accent:#FF7A45;
  --ok:#16C79A;
  --warn:#FF4D4F;
  --bg:#F7F7FB;
  --card:#FFFFFF;
  --line:#ECEAF7;
  --band:#12131A;
  --ink:#12131A;
  --text:#4A4F5C;
  --muted:#8A8F9E;
  --on-dark:#C9CCDA;
  --r-xl:24px;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --sh:0 8px 24px rgba(18,19,26,.06);
  --sh-hover:0 16px 36px rgba(108,75,255,.14);
  --nav-h:64px;
  --sec:88px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;line-height:1.3;}
p{margin:0 0 1.05em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(108,75,255,.45);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  height:var(--nav-h);
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(18,19,26,.06);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:20px;}
.header-left{display:flex;align-items:center;gap:28px;min-width:0;}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:18px;font-weight:800;color:var(--ink);white-space:nowrap;}
.brand:hover{color:var(--ink);}
.brand-dot{width:9px;height:9px;border-radius:3px;background:var(--brand);flex:none;box-shadow:0 0 0 3px rgba(108,75,255,.14);}
.brand-text em{font-style:normal;color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--text);white-space:nowrap;transition:color .15s ease,background-color .15s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:var(--brand);
}
.header-right{display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;width:200px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);
  transition:width .25s ease,border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,75,255,.16);}
.nav-search input{border:0;outline:0;background:transparent;font-size:14px;width:100%;color:var(--ink);}
.nav-search input::placeholder{color:var(--muted);}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);border:1px solid transparent;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-brand:active{transform:translateY(0);}
.btn-brand.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm);}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);border:1.5px solid var(--ink);
  background:#fff;color:var(--ink);font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,transform .18s ease;
}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-md);border:1px solid transparent;
  background:transparent;color:var(--brand);font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .18s ease;
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-brand[aria-disabled="true"],.btn-outline[aria-disabled="true"]{opacity:.4;box-shadow:none;pointer-events:none;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative;
}
.nav-toggle span::before{position:absolute;top:-6px;left:0;}
.nav-toggle span::after{position:absolute;top:6px;left:0;}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,19,26,.5);opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;z-index:1090;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:86vw;background:#fff;z-index:1100;
  transform:translateX(102%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{font-size:16px;font-weight:700;color:var(--ink);}
.drawer-close{width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:999px;margin-bottom:18px;color:var(--muted);}
.drawer-search input{border:0;outline:0;width:100%;font-size:14px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px;}
.drawer-link{padding:12px 14px;border-radius:var(--r-sm);color:var(--text);font-size:15px;}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-link.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer-cta{width:100%;margin-top:auto;}

/* ---------- page banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  background:linear-gradient(115deg,#F3F0FF 0%,#FAF8FF 55%,#F7F7FB 100%);
  border-bottom:1px solid var(--line);
  padding:34px 0 60px;
}
.banner-shape{
  position:absolute;right:0;top:0;width:44%;height:100%;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  clip-path:polygon(22% 0,100% 0,100% 100%,0 100%);
  opacity:.9;
}
.banner-shape::before{
  content:"";position:absolute;left:-30px;top:0;width:110px;height:100%;
  background:var(--brand);opacity:.85;
  clip-path:polygon(60% 0,100% 0,40% 100%,0 100%);
}
.banner-inner{position:relative;z-index:2;max-width:660px;}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px;}
.breadcrumb-nav a{color:var(--muted);}
.breadcrumb-nav a:hover{color:var(--brand);}
.breadcrumb-nav .sep{opacity:.6;}
.breadcrumb-nav .current{color:var(--brand);}
.banner-kicker{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--brand-line);color:var(--brand);
  font-size:13px;font-weight:600;margin-bottom:16px;
}
.page-banner h1{
  font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.28;color:var(--ink);margin-bottom:14px;
  padding-left:16px;position:relative;
}
.page-banner h1::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--brand);
}
.banner-lead{font-size:16px;color:var(--text);max-width:620px;}

/* ---------- sections ---------- */
main{display:block;}
.section{padding:var(--sec) 0;}
.section-tight{padding:56px 0;}
.sec-head{margin-bottom:40px;max-width:760px;}
.sec-head h2{
  font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;position:relative;padding-left:16px;margin-bottom:14px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);
}
.sec-head p{color:var(--text);font-size:16px;}
.sec-sub{font-size:14px;color:var(--muted);}

/* intro */
.intro-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:32px 34px;box-shadow:var(--sh);
}
.intro-card p{font-size:16px;color:var(--text);}
.intro-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.fact-chip{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;
}
.fact-chip svg{flex:none;}

/* timeline */
.timeline{position:relative;margin-top:8px;}
.step-item{position:relative;padding:0 0 44px 76px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:19px;top:44px;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--brand-line),rgba(108,75,255,.05));
}
.step-item:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-weight:800;font-size:16px;
  box-shadow:0 8px 18px rgba(108,75,255,.28);
}
.step-item:nth-child(even) .step-num{background:var(--ink);box-shadow:0 8px 18px rgba(18,19,26,.2);}
.step-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 26px;box-shadow:var(--sh);transition:transform .25s ease,box-shadow .25s ease;
}
.step-body:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.step-body h3{font-size:18px;font-weight:600;margin-bottom:10px;color:var(--ink);}
.step-body p{font-size:15px;margin-bottom:0;color:var(--text);}
.step-note{
  display:flex;gap:8px;align-items:flex-start;margin-top:14px;padding:12px 14px;border-radius:var(--r-sm);
  background:var(--bg);border-left:3px solid var(--brand);font-size:14px;color:var(--text);
}
.step-note.warn{border-left-color:var(--accent);}
.step-media{margin-top:16px;border-radius:var(--r-md);overflow:hidden;}
.step-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.step-media:hover img{transform:scale(1.04);}

/* dark band */
.band{background:var(--band);color:var(--on-dark);padding:var(--sec) 0;}
.band .sec-head h2{color:#fff;}
.band .sec-head h2::before{background:var(--accent);}
.band .sec-head p{color:var(--on-dark);}
.band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.band-card{
  border:1px solid rgba(201,204,218,.16);border-radius:var(--r-lg);padding:26px 24px;
  background:rgba(255,255,255,.03);transition:border-color .25s ease,transform .25s ease;
}
.band-card:hover{border-color:rgba(108,75,255,.7);transform:translateY(-4px);}
.band-num{
  font-size:34px;font-weight:800;color:var(--accent);line-height:1;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.band-card h3{color:#fff;font-size:18px;font-weight:600;margin-bottom:10px;}
.band-card p{color:var(--on-dark);font-size:15px;margin-bottom:0;}

/* blockers */
.blocker-list{border-top:1px solid var(--line);}
.blocker-item{
  display:grid;grid-template-columns:260px 1fr;gap:28px;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.blocker-title{position:relative;padding-left:16px;font-size:16px;font-weight:600;color:var(--ink);}
.blocker-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);}
.blocker-item p{font-size:15px;margin:0;}

/* device cards */
.device-grid{display:grid;grid-template-columns:5fr 4fr 3fr;gap:24px;align-items:stretch;}
.device-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh);display:flex;flex-direction:column;gap:14px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.device-card .tag-badge{align-self:flex-start;}
.device-card h3{font-size:18px;font-weight:600;}
.device-card p{font-size:15px;margin:0;}
.device-card .device-media{border-radius:var(--r-md);overflow:hidden;margin-top:auto;}
.device-card .device-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.tag-badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:0;
}
.tag-badge.orange{background:#FFF1EA;color:#E85F28;}
.tag-badge.dark{background:#EEEFF4;color:#4A4F5C;}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}

/* FAQ */
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-button{
  position:relative;width:100%;background:#fff;color:var(--ink);font-size:16px;font-weight:600;
  padding:18px 56px 18px 22px;box-shadow:none;border:0;
}
.faq-acc .accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:#fff;}
.faq-acc .accordion-button:focus{box-shadow:none;}
.faq-acc .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;
  font-size:24px;font-weight:400;color:var(--brand);line-height:1;
  display:flex;align-items:center;justify-content:center;margin-left:auto;
  transition:transform .25s ease,color .25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand);}
.faq-acc .accordion-body{padding:0 22px 20px 22px;font-size:15px;color:var(--text);}

/* related cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.ui-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease;height:100%;
}
.ui-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.ui-card .card-media{overflow:hidden;}
.ui-card .card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.ui-card:hover .card-media img{transform:scale(1.04);}
.ui-card .card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.ui-card h3{font-size:17px;font-weight:600;line-height:1.5;}
.ui-card p{font-size:14px;color:var(--text);margin:0;}
.ui-card .card-foot{margin-top:auto;font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;}
.ui-card .card-link{display:flex;flex-direction:column;gap:12px;height:100%;color:inherit;}
.ui-card .card-link:hover{color:inherit;}
.ui-card .read-more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;background:var(--band);color:#fff;padding:72px 0;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-60px;width:420px;height:420px;
  background:var(--brand);opacity:.22;transform:rotate(24deg);
  clip-path:polygon(30% 0,100% 0,70% 100%,0 100%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
.cta-text{max-width:620px;}
.cta-text h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-text p{color:var(--on-dark);font-size:15px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-outline{border-color:#fff;background:transparent;color:#fff;}
.cta-band .btn-outline:hover{background:#fff;color:var(--ink);}

/* footer */
.site-footer{background:var(--band);color:var(--on-dark);padding:64px 0 0;font-size:14px;}
.footer-brand{display:inline-flex;align-items:center;gap:9px;font-size:17px;font-weight:800;color:#fff;margin-bottom:16px;}
.footer-brand:hover{color:#fff;}
.footer-brand em{font-style:normal;color:#A995FF;}
.footer-desc{color:var(--on-dark);font-size:14px;line-height:1.8;max-width:300px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-list li{margin-bottom:10px;color:var(--on-dark);font-size:14px;}
.footer-list a{color:var(--on-dark);}
.footer-list a:hover{color:#A995FF;}
.footer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;margin-top:12px;
  border:1px solid rgba(201,204,218,.24);border-radius:999px;color:var(--muted);
}
.footer-search input{border:0;outline:0;background:transparent;width:100%;color:#fff;font-size:14px;}
.footer-search input::placeholder{color:#767B8A;}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid rgba(201,204,218,.16);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8A8F9E;
}

/* responsive */
@media (max-width:1199.98px){
  .band-grid{gap:20px;}
  .main-nav{gap:0;}
  .nav-link{padding:8px 10px;font-size:14px;}
  .brand{font-size:17px;}
}
@media (max-width:991.98px){
  :root{--sec:64px;}
  .main-nav{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{gap:12px;}
  .banner-shape{width:52%;opacity:.35;}
  .banner-inner{max-width:100%;}
  .band-grid{grid-template-columns:1fr;}
  .blocker-item{grid-template-columns:1fr;gap:10px;}
  .device-grid{grid-template-columns:1fr 1fr;}
  .card-grid{grid-template-columns:1fr 1fr;}
  .step-item{padding-left:64px;}
}
@media (max-width:767.98px){
  :root{--sec:48px;--nav-h:56px;}
  .container{padding:0 16px;}
  .page-banner{padding:26px 0 44px;}
  .banner-shape{display:none;}
  .btn-brand,.btn-outline,.btn-ghost{height:44px;padding:0 18px;font-size:15px;}
  .intro-card{padding:24px 20px;}
  .step-item{padding-left:56px;padding-bottom:32px;}
  .step-num{width:34px;height:34px;border-radius:10px;font-size:15px;}
  .step-item::before{left:16px;top:38px;}
  .step-body{padding:20px 18px;}
  .device-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-brand,.cta-actions .btn-outline{flex:1 1 100%;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .sec-head{margin-bottom:28px;}
}
@media (max-width:479.98px){
  body{font-size:15px;}
  .brand{font-size:15.5px;}
  .brand-dot{width:8px;height:8px;}
  .page-banner h1{font-size:23px;padding-left:12px;}
  .band-num{font-size:28px;}
  .step-item{padding-left:48px;}
}

/* roulang page: category2 */
:root{
  --brand:#6C4BFF;
  --brand-dark:#4A2FD6;
  --brand-soft:#F3F0FF;
  --accent:#FF7A45;
  --ink:#12131A;
  --text:#4A4F5C;
  --muted:#8A8F9E;
  --line:#ECEAF7;
  --bg:#F7F7FB;
  --card:#FFFFFF;
  --success:#16C79A;
  --danger:#FF4D4F;
  --r-lg:24px;
  --r:18px;
  --r-sm:12px;
  --r-btn:14px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(18,19,26,.06);
  --sh-hover:0 16px 36px rgba(108,75,255,.14);
  --nav-h:64px;
  --sec:80px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;font-weight:700;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .15s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
ul{list-style:none;}
::selection{background:rgba(108,75,255,.18);}
:focus-visible{outline:3px solid rgba(108,75,255,.45);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%;}
@media (max-width:767.98px){.container{padding-left:16px;padding-right:16px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 4px 16px rgba(18,19,26,.06);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h);}
.header-left{display:flex;align-items:center;gap:32px;min-width:0;}
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:17px;color:var(--ink);white-space:nowrap;}
.brand:hover{color:var(--ink);}
.brand-dot{width:10px;height:10px;border-radius:3px;background:var(--brand);display:inline-block;flex:none;}
.brand-text em{font-style:normal;color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:22px;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 0;}
.nav-link:hover{color:var(--brand);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--brand);}
.header-right{display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;width:200px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;color:var(--muted);
  transition:width .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.nav-search svg{flex:none;}
.nav-search:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,75,255,.15);}
.nav-search input{border:0;outline:0;background:transparent;font-size:14px;color:var(--ink);width:100%;font-family:inherit;}
.nav-search input::placeholder{color:var(--muted);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;
  border-radius:var(--r-sm);position:relative;cursor:pointer;flex:none;
}
.nav-toggle span{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 按钮 */
.btn-brand,.btn-dark-line,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  cursor:pointer;border:1px solid transparent;transition:all .18s ease;white-space:nowrap;
}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-hover);}
.btn-brand.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm);}
.btn-dark-line{background:#fff;border:1.5px solid var(--ink);color:var(--ink);}
.btn-dark-line:hover{background:var(--ink);border-color:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-soft{background:transparent;border-color:transparent;color:var(--brand);}
.btn-soft:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-on-dark{background:transparent;border:1.5px solid rgba(201,204,218,.45);color:#E8E9F2;}
.btn-on-dark:hover{background:rgba(255,255,255,.08);border-color:#fff;color:#fff;}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(18,19,26,.5);opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:1100;}
.drawer-mask.show{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(330px,86vw);background:#fff;z-index:1200;
  transform:translateX(103%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  box-shadow:-8px 0 32px rgba(18,19,26,.14);padding:20px;overflow-y:auto;
  display:flex;flex-direction:column;gap:18px;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head .drawer-title{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.06em;}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);background:#fff;border-radius:var(--r-sm);font-size:20px;line-height:1;color:var(--ink);cursor:pointer;}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-pill);color:var(--muted);background:var(--bg);}
.drawer-search input{border:0;outline:0;background:transparent;font-size:14px;width:100%;color:var(--ink);font-family:inherit;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{padding:12px 14px;border-radius:var(--r-sm);color:var(--ink);font-size:15px;font-weight:500;}
.drawer-nav a:hover{background:var(--bg);color:var(--brand);}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer-cta{width:100%;margin-top:auto;}

/* ---------- 内页横幅 ---------- */
.page-hero{position:relative;overflow:hidden;background:linear-gradient(118deg,#F3F0FF 0%,#F7F7FB 58%,#FFF2EB 100%);border-bottom:1px solid var(--line);}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(108,75,255,.16) 1px,transparent 1px);
  background-size:18px 18px;opacity:.5;
}
.page-hero::after{
  content:"";position:absolute;right:-70px;top:-60px;width:300px;height:300px;
  background:linear-gradient(135deg,rgba(108,75,255,.18),rgba(255,122,69,.14));
  border-radius:42px;transform:rotate(20deg);
}
.page-hero .container{position:relative;z-index:2;padding-top:40px;padding-bottom:48px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C7CAD6;}
.crumb .current{color:var(--brand);font-weight:600;}
.page-hero h1{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.3;max-width:840px;letter-spacing:0;}
.page-hero .lede{margin-top:14px;font-size:15px;line-height:1.8;color:var(--text);max-width:780px;}
.hero-tags{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px;}
.tag{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:var(--r-pill);background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text);}
.tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;font-style:normal;}

/* ---------- 板块 ---------- */
.section{padding:var(--sec) 0;}
.section.tight{padding-top:56px;}
.section-head{max-width:780px;margin-bottom:32px;}
.section-head h2{position:relative;padding-left:15px;font-size:clamp(22px,2.6vw,32px);font-weight:700;}
.section-head h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:2px;background:var(--brand);}
.section-head p{margin-top:12px;font-size:15px;color:var(--text);}

/* 引言 */
.intro-block{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px 36px;box-shadow:var(--sh);position:relative;overflow:hidden;}
.intro-block::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--brand);}
.intro-block p{font-size:15.5px;line-height:1.9;color:var(--text);}
.intro-block strong{color:var(--ink);font-weight:600;}

/* 对照行 */
.spec-group{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);}
.spec-row{display:grid;grid-template-columns:290px 1fr;gap:28px;padding:22px 30px;border-top:1px solid var(--line);align-items:start;}
.spec-row:first-child{border-top:0;}
.spec-key{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--ink);font-size:15px;}
.spec-key .key-icon{width:26px;height:26px;border-radius:9px;background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:none;}
.spec-key .key-icon svg{width:14px;height:14px;}
.spec-val{font-size:15px;color:var(--text);line-height:1.8;}
.spec-val .hl{color:var(--brand);font-weight:600;}
.spec-group.alt .spec-row:nth-child(odd){background:#FCFBFF;}

/* 深色环境面板 */
.env-panel{background:#12131A;border-radius:var(--r-lg);padding:44px;position:relative;overflow:hidden;}
.env-panel::after{
  content:"";position:absolute;right:-90px;bottom:-110px;width:320px;height:320px;border-radius:56px;
  background:linear-gradient(135deg,rgba(108,75,255,.42),rgba(255,122,69,.24));transform:rotate(24deg);
}
.env-panel h2{position:relative;z-index:2;color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;}
.env-panel .env-sub{position:relative;z-index:2;color:#C9CCDA;font-size:15px;margin-bottom:28px;max-width:680px;}
.env-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;}
.env-row{display:flex;align-items:baseline;justify-content:space-between;gap:18px;padding:16px 0;border-bottom:1px solid #262838;}
.env-key{font-size:14px;color:#8F93A3;}
.env-val{font-size:14px;font-weight:600;color:#fff;text-align:right;font-variant-numeric:tabular-nums;}
.env-val.accent{color:var(--accent);}
.env-val.green{color:var(--success);}

/* 异常处理行 */
.fix-row{display:grid;grid-template-columns:1fr 1.35fr;gap:28px;padding:22px 30px;border-top:1px solid var(--line);}
.fix-group{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);}
.fix-row:first-child{border-top:0;}
.fix-sym{display:flex;flex-direction:column;gap:8px;align-items:flex-start;}
.fix-sym span.txt{font-weight:600;color:var(--ink);font-size:15px;}
.alert-tag{display:inline-block;padding:2px 10px;border-radius:var(--r-pill);background:rgba(255,77,79,.1);color:var(--danger);font-size:12px;font-weight:600;}
.warn-tag{display:inline-block;padding:2px 10px;border-radius:var(--r-pill);background:rgba(255,122,69,.12);color:#D9541F;font-size:12px;font-weight:600;}
.fix-txt{font-size:15px;color:var(--text);line-height:1.8;}

/* 卡片 */
.card-item{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;height:100%;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.card-item:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#DED7FF;}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card-item:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-cat{align-self:flex-start;padding:4px 12px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;}
.badge-cat.orange{background:rgba(255,122,69,.12);color:#C9500F;}
.badge-cat.violet{background:#EFEBFF;color:#5A34E0;}
.card-body h3{font-size:17px;font-weight:600;line-height:1.5;}
.card-body p{font-size:14px;line-height:1.75;color:var(--text);margin:0;}
.card-foot{margin-top:auto;padding-top:6px;font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;}
.card-foot .go{color:var(--brand);font-weight:600;font-size:14px;}

/* CTA */
.cta-band{position:relative;overflow:hidden;background:linear-gradient(118deg,#12131A 0%,#1C1B2C 52%,#2C1F58 100%);padding:72px 0;}
.cta-band::after{content:"";position:absolute;right:-60px;top:-80px;width:320px;height:320px;border-radius:60px;background:linear-gradient(135deg,rgba(108,75,255,.4),rgba(255,122,69,.2));transform:rotate(22deg);}
.cta-inner{position:relative;z-index:2;max-width:720px;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;}
.cta-band p{color:#C9CCDA;font-size:15px;margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 页脚 */
.site-footer{background:#12131A;color:#C9CCDA;padding:64px 0 0;font-size:14px;}
.footer-brand{display:inline-flex;align-items:center;gap:9px;color:#fff;font-weight:800;font-size:17px;margin-bottom:14px;}
.footer-brand:hover{color:#fff;}
.footer-brand em{font-style:normal;color:var(--brand);}
.footer-desc{font-size:13px;line-height:1.85;color:#8F93A3;max-width:300px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-list{padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-list li{font-size:13px;color:#8F93A3;line-height:1.7;}
.footer-list a{color:#C9CCDA;font-size:13px;}
.footer-list a:hover{color:var(--brand);}
.footer-search{display:flex;align-items:center;gap:8px;height:42px;padding:0 14px;border:1px solid #2A2C3A;background:#1A1B24;border-radius:var(--r-pill);color:#8F93A3;margin-top:14px;}
.footer-search input{border:0;outline:0;background:transparent;color:#fff;font-size:13px;width:100%;font-family:inherit;}
.footer-search input::placeholder{color:#6F7382;}
.footer-bottom{border-top:1px solid #23242F;margin-top:48px;padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8F93A3;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .spec-row{grid-template-columns:250px 1fr;gap:22px;}
}
@media (max-width:991.98px){
  :root{--sec:64px;}
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .nav-search{width:170px;}
  .nav-search:focus-within{width:210px;}
  .header-left{gap:0;}
  .spec-row{grid-template-columns:1fr;gap:8px;padding:20px 22px;}
  .fix-row{grid-template-columns:1fr;gap:10px;padding:20px 22px;}
  .env-panel{padding:32px 26px;}
  .env-grid{grid-template-columns:1fr;gap:0;}
}
@media (max-width:767.98px){
  :root{--sec:48px;--nav-h:56px;}
  .brand{font-size:15.5px;}
  .nav-search,.header-right .btn-brand{display:none;}
  .btn-brand,.btn-dark-line,.btn-soft{height:44px;padding:0 20px;}
  .page-hero .container{padding-top:32px;padding-bottom:36px;}
  .page-hero::after{width:200px;height:200px;right:-70px;top:-50px;}
  .intro-block{padding:24px 22px;}
  .cta-band{padding:56px 0;}
  .env-panel{padding:26px 20px;}
  .env-row{flex-direction:column;align-items:flex-start;gap:4px;}
  .env-val{text-align:left;}
}
@media (max-width:479.98px){
  .page-hero h1{font-size:24px;}
  .hero-tags{gap:8px;}
  .tag{font-size:12px;padding:4px 12px;}
}

/* roulang page: category3 */
:root{
  --brand:#6C4BFF;
  --brand-dark:#4A2FD6;
  --brand-tint:#F3F0FF;
  --brand-soft:#E5DEFF;
  --accent:#FF7A45;
  --success:#16C79A;
  --danger:#FF4D4F;
  --ink:#12131A;
  --text:#4A4F5C;
  --muted:#8A8F9E;
  --bg:#F7F7FB;
  --card:#FFFFFF;
  --line:#ECEAF7;
  --input-line:#DCD9EA;
  --footer-text:#C9CCDA;
  --radius-xl:24px;
  --radius:18px;
  --radius-sm:12px;
  --radius-btn:14px;
  --shadow:0 8px 24px rgba(18,19,26,.06);
  --shadow-hover:0 16px 36px rgba(108,75,255,.14);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;}
h1{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;}
h3{font-size:18px;font-weight:600;line-height:1.5;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:3px solid rgba(108,75,255,.4);outline-offset:2px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(18,19,26,.06);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:var(--nav-h);
}
.header-left{display:flex;align-items:center;gap:32px;min-width:0;}
.header-right{display:flex;align-items:center;gap:12px;}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:17px;font-weight:800;color:var(--ink);white-space:nowrap;}
.brand:hover{color:var(--ink);}
.brand .brand-dot{width:8px;height:8px;border-radius:2px;background:var(--brand);flex:none;}
.brand-text em{font-style:normal;color:var(--brand);margin-left:3px;}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:200px;height:42px;padding:0 16px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  color:var(--muted);
  transition:width .25s ease,border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,75,255,.18);}
.nav-search svg{flex:none;}
.nav-search input{
  border:none;outline:none;background:transparent;width:100%;
  font-size:14px;color:var(--ink);
}
.nav-search input::placeholder{color:var(--muted);}
.btn-brand,.btn-outline-ink,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:background .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  cursor:pointer;
}
.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(108,75,255,.28);}
.btn-outline-ink{background:#fff;color:var(--ink);border-color:var(--ink);}
.btn-outline-ink:hover{background:var(--ink);color:#fff;}
.btn-ghost{background:transparent;color:var(--brand);}
.btn-ghost:hover{background:var(--brand-tint);color:var(--brand-dark);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px;}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:#fff;border-radius:12px;position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg);}
.drawer-extra{display:none;}
.nav-overlay{
  position:fixed;inset:0;background:rgba(18,19,26,.5);
  opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:1035;
}
.nav-overlay.open{opacity:1;visibility:visible;}

/* ---------- 内页横幅 ---------- */
.page-banner{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#F3F0FF 0%,#EFEBFF 60%,#E9E3FF 100%);
  padding:44px 0 52px;
  border-bottom:1px solid var(--line);
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(108,75,255,.16) 1px,transparent 1px);
  background-size:18px 18px;opacity:.55;pointer-events:none;
}
.banner-shape{
  position:absolute;right:-60px;top:-40px;width:360px;height:280px;
  background:linear-gradient(120deg,rgba(108,75,255,.22),rgba(255,122,69,.18));
  clip-path:polygon(38px 0,100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:2;display:flex;gap:32px;align-items:center;justify-content:space-between;}
.banner-copy{max-width:660px;}
.breadcrumb-nav{font-size:13px;color:var(--muted);margin-bottom:14px;}
.breadcrumb-nav a{color:var(--muted);}
.breadcrumb-nav a:hover{color:var(--brand);}
.breadcrumb-nav .sep{margin:0 8px;color:#C7C4D8;}
.breadcrumb-nav .current{color:var(--accent);}
.page-banner h1{font-size:clamp(24px,3vw,36px);margin-bottom:14px;}
.banner-lead{font-size:15px;color:var(--text);margin:0;max-width:600px;}
.banner-visual{
  flex:none;width:300px;height:180px;border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);position:relative;z-index:2;
  border:4px solid #fff;
}
.banner-visual img{width:100%;height:100%;object-fit:cover;}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{position:relative;padding-left:16px;margin-bottom:14px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  background:var(--brand);border-radius:3px;
}
.section-head p{color:var(--muted);font-size:15px;margin:0;}

/* ---------- 交错图文 ---------- */
.zigzag-row{align-items:center;gap:0;}
.zigzag-row + .zigzag-row{margin-top:64px;}
.zigzag-media{
  border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow);
  aspect-ratio:16/10;background:#EFEDF8;
}
.zigzag-media img{width:100%;height:100%;object-fit:cover;}
.zigzag-body{padding:0 12px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-tint);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.zigzag-body h3{font-size:clamp(20px,2.2vw,24px);margin-bottom:12px;line-height:1.4;}
.check-list{margin-top:18px;}
.check-list li{
  position:relative;padding-left:30px;margin-bottom:12px;
  font-size:15px;line-height:1.75;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:16px;height:16px;
  border-radius:50%;background:var(--brand-tint);
  border:2px solid var(--brand);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:14px;width:6px;height:3px;
  border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(-45deg);
}

/* ---------- 要点清单卡 ---------- */
.habit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.habit-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;transition:transform .25s ease,box-shadow .25s ease;
  overflow:hidden;height:100%;
}
.habit-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:4px;
  background:linear-gradient(90deg,var(--brand),var(--brand-soft));
}
.habit-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.habit-num{
  font-size:13px;font-weight:800;color:var(--accent);
  letter-spacing:.04em;margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.habit-card h3{font-size:17px;margin-bottom:8px;}
.habit-card p{font-size:14px;line-height:1.7;color:var(--text);margin:0;}

/* ---------- 提示型信息卡 ---------- */
.alert-card{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:var(--radius);padding:24px 26px;display:flex;gap:18px;align-items:flex-start;
  box-shadow:var(--shadow);
}
.alert-icon{
  flex:none;width:44px;height:44px;border-radius:12px;background:#FFF1EA;
  display:flex;align-items:center;justify-content:center;color:var(--accent);
}
.alert-card h3{font-size:17px;margin-bottom:6px;}
.alert-card p{font-size:14.5px;margin:0;color:var(--text);}

/* ---------- 对照列表 ---------- */
.spec-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-xl);overflow:hidden;}
.spec-item{display:flex;gap:24px;padding:22px 26px;border-bottom:1px solid var(--line);}
.spec-item:last-child{border-bottom:none;}
.spec-key{
  flex:none;width:200px;font-weight:600;color:var(--ink);font-size:15px;
  display:flex;align-items:center;gap:10px;
}
.spec-key .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);flex:none;}
.spec-val{font-size:15px;line-height:1.75;color:var(--text);}

/* ---------- 深色流程带 ---------- */
.flow-band{background:var(--ink);color:var(--footer-text);position:relative;overflow:hidden;}
.flow-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(201,204,218,.14) 1px,transparent 1px);
  background-size:22px 22px;opacity:.6;
}
.flow-band::after{
  content:"";position:absolute;right:-80px;bottom:-80px;width:320px;height:320px;
  background:linear-gradient(130deg,rgba(108,75,255,.35),rgba(255,122,69,.14));
  clip-path:polygon(0 0,100% 0,100% 100%,40px 100%);
}
.flow-inner{position:relative;z-index:2;}
.flow-band h2{color:#fff;position:relative;padding-left:16px;}
.flow-band h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--brand);border-radius:3px;}
.flow-band .flow-sub{color:var(--footer-text);font-size:15px;margin-top:12px;max-width:640px;}
.flow-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;}
.flow-step{
  background:rgba(255,255,255,.045);border:1px solid rgba(201,204,218,.16);
  border-radius:var(--radius);padding:24px;transition:border-color .25s ease,transform .25s ease;
}
.flow-step:hover{border-color:rgba(108,75,255,.6);transform:translateY(-4px);}
.flow-step .step-num{
  font-size:32px;font-weight:800;color:var(--brand);line-height:1;
  font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.flow-step h3{color:#fff;font-size:17px;margin-bottom:8px;}
.flow-step p{color:var(--footer-text);font-size:14px;margin:0;line-height:1.75;}

/* ---------- 相关推荐 ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.rec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform .25s ease,box-shadow .25s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.rec-media{aspect-ratio:16/9;overflow:hidden;background:#EFEDF8;}
.rec-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.rec-card:hover .rec-media img{transform:scale(1.04);}
.rec-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-tag{
  align-self:flex-start;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-tint);border-radius:999px;padding:4px 12px;
}
.rec-body h3{font-size:16px;line-height:1.5;}
.rec-body p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.7;}
.rec-link{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--brand);}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--brand);color:#fff;
  padding:64px 0;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:320px;height:320px;
  background:rgba(255,255,255,.12);
  clip-path:polygon(40px 0,100% 0,100% 100%,0 100%);
}
.cta-inner{position:relative;z-index:2;display:flex;gap:32px;align-items:center;justify-content:space-between;flex-wrap:wrap;}
.cta-inner h2{color:#fff;margin-bottom:10px;font-size:clamp(22px,2.6vw,30px);}
.cta-inner p{color:rgba(255,255,255,.86);margin:0;font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-outline-ink{background:transparent;color:#fff;border-color:rgba(255,255,255,.75);}
.cta-band .btn-outline-ink:hover{background:#fff;color:var(--brand);border-color:#fff;}
.cta-band .btn-light-solid{background:#fff;color:var(--brand);border-color:#fff;}
.cta-band .btn-light-solid:hover{background:#F3F0FF;color:var(--brand-dark);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--footer-text);padding:64px 0 0;font-size:14px;}
.footer-brand{
  display:inline-flex;align-items:center;gap:9px;color:#fff;font-weight:800;
  font-size:17px;margin-bottom:16px;
}
.footer-brand:hover{color:#fff;}
.footer-brand em{font-style:normal;color:var(--brand);}
.footer-brand .brand-dot{width:8px;height:8px;border-radius:2px;background:var(--brand);flex:none;}
.footer-desc{color:var(--footer-text);font-size:13.5px;line-height:1.8;margin:0;max-width:280px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-list li{margin-bottom:10px;font-size:13.5px;color:var(--footer-text);}
.footer-list a{color:var(--footer-text);}
.footer-list a:hover{color:var(--brand);}
.footer-search{
  display:flex;align-items:center;gap:8px;margin-top:14px;
  background:rgba(255,255,255,.06);border:1px solid rgba(201,204,218,.2);
  border-radius:999px;padding:0 16px;height:44px;
}
.footer-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,75,255,.22);}
.footer-search input{background:transparent;border:none;outline:none;color:#fff;font-size:13.5px;width:100%;}
.footer-search input::placeholder{color:#8A8F9E;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(201,204,218,.16);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .habit-grid{grid-template-columns:repeat(2,1fr);}
  .rec-grid{grid-template-columns:repeat(2,1fr);}
  .banner-visual{width:260px;height:160px;}
}
@media (max-width:991px){
  :root{--nav-h:56px;}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:300px;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:76px 24px 28px;transform:translateX(100%);
    transition:transform .3s ease;box-shadow:-12px 0 40px rgba(18,19,26,.14);
    overflow-y:auto;z-index:1045;
  }
  .main-nav.open{transform:translateX(0);}
  .nav-link{padding:15px 0;border-bottom:1px solid var(--line);font-size:15.5px;}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--brand);}
  .nav-search,.header-right .btn-brand{display:none;}
  .nav-toggle{display:block;}
  .drawer-extra{display:block;margin-top:22px;}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:46px;padding:0 16px;
    border:1px solid var(--line);border-radius:999px;color:var(--muted);
  }
  .drawer-search input{border:none;outline:none;background:transparent;width:100%;font-size:14px;color:var(--ink);}
  .drawer-extra .btn-brand{width:100%;margin-top:16px;}
  .header-left{gap:16px;}
  .page-banner{padding:34px 0 40px;}
  .banner-visual{display:none;}
  .banner-copy{max-width:100%;}
  .section{padding:64px 0;}
  .flow-steps{grid-template-columns:1fr;}
  .zigzag-row + .zigzag-row{margin-top:44px;}
  .zigzag-row.reverse .zigzag-media{order:2;}
  .zigzag-body{padding:0;margin-top:24px;}
  .spec-item{flex-direction:column;gap:8px;padding:20px 22px;}
  .spec-key{width:auto;}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .habit-grid{grid-template-columns:1fr;gap:16px;}
  .rec-grid{grid-template-columns:1fr;gap:18px;}
  .btn-brand,.btn-outline-ink,.btn-ghost{height:44px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-brand,.cta-actions .btn-outline-ink{width:100%;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;}
  .alert-card{flex-direction:column;gap:14px;}
}
@media (max-width:520px){
  .page-banner h1{font-size:24px;}
  .section-head h2{font-size:21px;}
  .brand{font-size:15.5px;}
}

/* roulang page: category4 */
:root{
  --brand:#6C4BFF;
  --brand-dark:#4A2FD6;
  --brand-soft:#F3F0FF;
  --accent:#FF7A45;
  --ok:#16C79A;
  --warn:#FF4D4F;
  --ink:#12131A;
  --text:#4A4F5C;
  --muted:#8A8F9E;
  --bg:#F7F7FB;
  --card:#FFFFFF;
  --line:#ECEAF7;
  --line-strong:#DCD9EA;
  --dark-text:#C9CCDA;
  --r-sm:12px;
  --r-md:14px;
  --r-lg:18px;
  --r-xl:24px;
  --shadow:0 8px 24px rgba(18,19,26,.06);
  --shadow-hover:0 16px 36px rgba(108,75,255,.14);
  --nav-h:64px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0;}
a{text-decoration:none;color:inherit;transition:color .18s ease;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
:focus-visible{outline:3px solid rgba(108,75,255,.45);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(108,75,255,.18);}

.container{
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  width:100%;
}

/* ============ 按钮 ============ */
.btn-brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border:0;
  border-radius:var(--r-md);
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(108,75,255,.28);}
.btn-brand:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;border-radius:var(--r-sm);font-size:14px;}
.btn-outline{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border:1.5px solid var(--ink);
  border-radius:var(--r-md);
  background:#fff;
  color:var(--ink);
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  padding:0 22px;
  border:0;
  border-radius:var(--r-md);
  background:transparent;
  color:var(--brand);
  font-size:15px;
  font-weight:600;
  transition:background .18s ease,color .18s ease;
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-ghost-light{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  padding:0 24px;
  border:1.5px solid rgba(255,255,255,.55);
  border-radius:var(--r-md);
  background:transparent;
  color:#fff;
  font-size:15px;
  font-weight:600;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(18,19,26,.06);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:var(--nav-h);
}
.header-left{display:flex;align-items:center;gap:26px;min-width:0;}
.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;}
.brand-dot{
  width:10px;height:10px;border-radius:3px;background:var(--brand);
  box-shadow:0 0 0 4px rgba(108,75,255,.14);
  flex:none;
}
.brand-text{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:0;}
.brand-text em{font-style:normal;color:var(--brand);}

.main-nav{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;
  padding:8px 12px;
  border-radius:10px;
  font-size:15px;
  color:var(--text);
  white-space:nowrap;
  transition:color .15s ease,background .15s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:-2px;
  height:2px;border-radius:2px;background:var(--brand);
}

.header-right{display:flex;align-items:center;gap:12px;flex:none;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:200px;height:40px;padding:0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  color:var(--muted);
  transition:width .22s ease,border-color .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,75,255,.15);}
.nav-search input{
  width:100%;border:0;outline:0;background:transparent;
  font-size:14px;color:var(--ink);
}
.nav-search input::placeholder{color:var(--muted);}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#fff;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  display:block;
  width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span::before{transform:translateY(-6px);}
.nav-toggle span::after{transform:translateY(4px);}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateY(0) rotate(45deg);}
body.nav-open .nav-toggle span::after{transform:translateY(-2px) rotate(-45deg);}

.nav-drawer-extra{display:none;}
.nav-backdrop{
  position:fixed;inset:0;
  background:rgba(18,19,26,.5);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:1040;
}
body.nav-open .nav-backdrop{opacity:1;visibility:visible;}

/* ============ 内页横幅 ============ */
.page-banner{
  position:relative;
  overflow:hidden;
  background:linear-gradient(120deg,#F3F0FF 0%,#F7F7FB 62%,#FFF3EC 100%);
  border-bottom:1px solid var(--line);
  padding:40px 0 44px;
}
.banner-shape{
  position:absolute;
  right:-70px;top:-90px;
  width:300px;height:300px;
  background:linear-gradient(140deg,rgba(108,75,255,.22),rgba(255,122,69,.16));
  clip-path:polygon(14% 0,100% 0,100% 86%,0 100%);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:1;max-width:860px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb-sep{color:var(--line-strong);}
.crumb-current{color:var(--brand);font-weight:600;}
.page-banner h1{
  font-size:clamp(24px,3vw,36px);
  font-weight:800;
  line-height:1.3;
  margin-bottom:12px;
}
.banner-sub{font-size:15px;color:var(--text);max-width:720px;margin:0;}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-title{
  position:relative;
  padding-left:14px;
  font-size:clamp(22px,2.6vw,32px);
  font-weight:700;
  line-height:1.35;
  margin-bottom:14px;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;top:.3em;
  width:3px;height:1.05em;
  border-radius:2px;
  background:var(--brand);
}
.section-title.light{color:#fff;}
.section-title.light::before{background:var(--accent);}
.section-desc{font-size:15px;color:var(--text);margin:0;}

/* ============ 首段说明 ============ */
.intro-grid{
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:48px;
  align-items:start;
}
.intro-copy p{font-size:16px;line-height:1.9;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag-pill{
  display:inline-flex;align-items:center;
  height:32px;padding:0 14px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
}
.tip-card{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:24px 24px 24px 28px;
  overflow:hidden;
}
.tip-card::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;
  width:4px;background:var(--accent);
}
.tip-card h3{font-size:16px;margin-bottom:10px;}
.tip-card p{font-size:14px;line-height:1.85;color:var(--text);margin:0;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-acc .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:box-shadow .22s ease,transform .22s ease;
}
.faq-acc .accordion-item:hover{box-shadow:var(--shadow-hover);}
.faq-acc .accordion-item:last-child{margin-bottom:0;}
.faq-acc .accordion-button{
  display:flex;
  align-items:center;
  gap:0;
  width:100%;
  padding:18px 22px;
  border:0;
  border-radius:var(--r-md);
  background:#fff;
  color:var(--ink);
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  text-align:left;
  box-shadow:none;
}
.faq-acc .accordion-button::before{
  content:"";
  flex:none;
  width:3px;height:18px;
  border-radius:2px;
  background:var(--brand);
  margin-right:14px;
  transition:background .2s ease;
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--brand);
  background:#fff;
  box-shadow:none;
}
.faq-acc .accordion-button:focus{border:0;box-shadow:none;outline:none;}
.faq-acc .accordion-button:focus-visible{outline:3px solid rgba(108,75,255,.4);outline-offset:-3px;}
.faq-acc .accordion-button::after{
  content:"+";
  flex:none;
  width:auto;height:auto;
  margin-left:16px;
  background-image:none;
  font-size:24px;
  font-weight:400;
  line-height:1;
  color:var(--muted);
  transition:transform .25s ease,color .25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  color:var(--brand);
}
.faq-acc .accordion-body{
  padding:0 22px 20px 39px;
  font-size:15px;
  line-height:1.9;
  color:var(--text);
}
.faq-acc .accordion-body strong{color:var(--ink);}

/* ============ 联系表单 ============ */
.contact-panel{
  background:var(--ink);
  border-radius:var(--r-xl);
  padding:56px 0;
  position:relative;
  overflow:hidden;
}
.contact-panel::after{
  content:"";
  position:absolute;
  right:-80px;bottom:-100px;
  width:320px;height:320px;
  background:linear-gradient(140deg,rgba(108,75,255,.35),rgba(255,122,69,.14));
  clip-path:polygon(16% 0,100% 0,100% 84%,0 100%);
  pointer-events:none;
}
.contact-inner{position:relative;z-index:1;}
.contact-panel .section-desc{color:var(--dark-text);}
.contact-points{margin-top:26px;display:grid;gap:14px;}
.contact-points li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:14px;color:var(--dark-text);line-height:1.75;
}
.contact-points .dot{
  flex:none;width:8px;height:8px;border-radius:50%;
  background:var(--accent);margin-top:9px;
}
.form-card{
  background:#fff;
  border-radius:var(--r-lg);
  box-shadow:0 20px 46px rgba(0,0,0,.22);
  padding:28px;
}
.form-card h3{font-size:19px;margin-bottom:6px;}
.form-card .form-hint{font-size:13px;color:var(--muted);margin-bottom:20px;}
.form-label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.form-control{
  width:100%;
  height:48px;
  padding:0 14px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-sm);
  background:#fff;
  color:var(--ink);
  font-size:15px;
  line-height:1.5;
  transition:border-color .18s ease,box-shadow .18s ease;
}
textarea.form-control{height:auto;min-height:132px;padding:12px 14px;resize:vertical;}
.form-control::placeholder{color:var(--muted);}
.form-control:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(108,75,255,.16);
}
.form-control.is-error{border-color:var(--warn);box-shadow:0 0 0 3px rgba(255,77,79,.12);}
.field-error{display:none;font-size:13px;color:var(--warn);margin-top:6px;}
.field-error.show{display:block;}
.form-group{margin-bottom:18px;}
.form-success{
  display:none;
  margin-top:16px;
  padding:12px 16px;
  border-radius:var(--r-sm);
  background:rgba(22,199,154,.12);
  color:#0E8F70;
  font-size:14px;
  font-weight:600;
}
.form-success.show{display:block;}

/* ============ 相关内容卡片 ============ */
.rec-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,75,255,.28);}
.rec-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.rec-card:hover .rec-thumb img{transform:scale(1.04);}
.rec-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-soft{
  align-self:flex-start;
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
}
.badge-accent{background:rgba(255,122,69,.12);color:#D9561F;}
.rec-body h3{font-size:18px;line-height:1.5;}
.rec-body p{font-size:14px;line-height:1.75;color:var(--text);margin:0;}
.rec-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand);}

/* ============ 尾部 CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  padding:72px 0;
}
.cta-band::after{
  content:"";
  position:absolute;
  left:-90px;top:-100px;
  width:320px;height:320px;
  background:linear-gradient(140deg,rgba(108,75,255,.4),rgba(255,122,69,.12));
  clip-path:polygon(0 0,86% 0,100% 100%,14% 100%);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;
  gap:36px;flex-wrap:wrap;
}
.cta-copy{max-width:640px;}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:12px;}
.cta-copy p{color:var(--dark-text);font-size:15px;margin:0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:var(--dark-text);
  padding:64px 0 0;
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;}
.footer-brand em{font-style:normal;color:var(--brand);}
.footer-desc{font-size:14px;line-height:1.85;color:var(--dark-text);margin-top:16px;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-list li{font-size:14px;color:var(--dark-text);margin-bottom:10px;line-height:1.7;}
.footer-list a{color:var(--dark-text);}
.footer-list a:hover{color:var(--brand);}
.footer-search{
  display:flex;align-items:center;gap:8px;
  height:44px;padding:0 14px;margin-top:12px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:999px;
  background:rgba(255,255,255,.06);
  color:var(--muted);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.footer-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,75,255,.2);}
.footer-search input{width:100%;border:0;outline:0;background:transparent;color:#fff;font-size:14px;}
.footer-search input::placeholder{color:var(--muted);}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:var(--muted);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-search{width:180px;}
  .nav-search:focus-within{width:230px;}
  .header-left{gap:16px;}
  .nav-link{padding:8px 9px;font-size:14px;}
}

@media (max-width:991px){
  :root{--nav-h:56px;}
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .nav-search{display:none;}
  .header-right .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;
    top:0;right:0;
    width:min(320px,86vw);
    height:100dvh;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:24px 20px 28px;
    background:#fff;
    box-shadow:-14px 0 40px rgba(18,19,26,.16);
    transform:translateX(102%);
    transition:transform .3s cubic-bezier(.4,0,.2,1);
    overflow-y:auto;
    z-index:1050;
  }
  body.nav-open .main-nav{transform:translateX(0);}
  .nav-link{padding:12px 10px;font-size:16px;border-radius:var(--r-sm);}
  .nav-link.active{background:var(--brand-soft);}
  .nav-link.active::after{display:none;}
  .nav-toggle{position:relative;z-index:1060;}
  .nav-drawer-extra{display:flex;flex-direction:column;gap:12px;order:-1;margin-bottom:14px;}
  .drawer-search{
    display:flex;align-items:center;gap:8px;
    height:44px;padding:0 14px;
    border:1px solid var(--line);
    border-radius:999px;
    background:var(--bg);
    color:var(--muted);
  }
  .drawer-search input{width:100%;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink);}
  .drawer-cta{order:99;margin-top:auto;width:100%;}
  .banner-shape{width:220px;height:220px;right:-80px;top:-70px;}
  .contact-panel{padding:44px 0;}
  .form-card{padding:24px 20px;}
}

@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .section-tight{padding:44px 0;}
  .brand-text{font-size:16px;}
  .page-banner{padding:32px 0 36px;}
  .banner-inner{max-width:100%;}
  .section-head{margin-bottom:26px;}
  .faq-acc .accordion-button{padding:16px 16px;font-size:16px;}
  .faq-acc .accordion-button::before{margin-right:10px;}
  .faq-acc .accordion-button::after{margin-left:10px;font-size:20px;}
  .faq-acc .accordion-body{padding:0 16px 18px 29px;}
  .cta-band{padding:52px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-brand,
  .cta-actions .btn-ghost-light{width:100%;}
  .rec-body{padding:18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}

@media (max-width:479px){
  .brand-text{font-size:15px;}
  .brand-dot{width:9px;height:9px;}
  .tip-card{padding:20px 18px 20px 24px;}
  .form-card{padding:20px 16px;}
  .btn-brand,
  .btn-outline,
  .btn-ghost,
  .btn-ghost-light{height:44px;padding:0 18px;}
}