/* roulang page: index */
:root{
  --ink:#0F1417;
  --brand:#12B39A;
  --brand-deep:#0E9682;
  --accent:#FF6A3D;
  --accent-deep:#E85A2E;
  --paper:#F5F3EE;
  --card:#FFFFFF;
  --text:#14181A;
  --muted:#5C6663;
  --line:rgba(15,20,23,.08);
  --line-strong:rgba(15,20,23,.16);
  --on-dark:#F2F4F3;
  --on-dark-muted:#9AA5A1;
  --radius-card:10px;
  --radius-btn:8px;
  --shadow-card:0 12px 32px -18px rgba(15,20,23,.22);
  --shadow-card-hover:0 18px 40px -18px rgba(15,20,23,.32);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid rgba(18,179,154,.55);outline-offset:2px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

/* ---------- 顶部倒计时条 + 导航 ---------- */
.site-top{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--ink);
}
.cdbar{
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.cdbar-inner{
  max-width:1240px;
  margin:0 auto;
  padding:0 20px;
  height:44px;
  display:flex;
  align-items:center;
  gap:14px;
}
.cd-label{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--on-dark-muted);
  white-space:nowrap;
}
.cd-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(255,106,61,.18);
  flex:none;
}
.cd-timer{
  display:flex;
  align-items:center;
  gap:4px;
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum";
  font-size:15px;
  font-weight:800;
  color:var(--accent);
  letter-spacing:.02em;
}
.cd-sep{color:rgba(255,255,255,.28);font-weight:500;}
.cd-link{
  margin-left:auto;
  font-size:13px;
  color:var(--on-dark-muted);
  border-bottom:1px solid transparent;
  transition:color .15s ease-out,border-color .15s ease-out;
  white-space:nowrap;
}
.cd-link:hover{color:#fff;border-color:var(--accent);}

.nav{
  background:var(--ink);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease-out;
}
.site-top.is-scrolled .nav{border-bottom-color:rgba(255,255,255,.1);}
.nav-inner{
  max-width:1240px;
  margin:0 auto;
  padding:0 20px;
  height:64px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{display:flex;align-items:center;gap:9px;flex:none;}
.brand-mark{
  width:16px;height:16px;border-radius:4px;
  background:var(--brand);
  position:relative;
  flex:none;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:5px 5px auto auto;
  width:6px;height:6px;
  background:var(--accent);
  border-radius:1px;
}
.brand-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
  white-space:nowrap;
}
.nav-menu{
  display:none;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-link{
  display:inline-block;
  padding:8px 12px;
  font-size:14px;
  color:var(--on-dark-muted);
  border-radius:var(--radius-btn);
  position:relative;
  transition:color .15s ease-out,background-color .15s ease-out;
  white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--brand);
  border-radius:2px;
}
.nav-right{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.search-box{
  display:none;
  align-items:center;
  height:38px;
  padding:0 12px;
  border-radius:var(--radius-btn);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  transition:border-color .15s ease-out,background-color .15s ease-out;
}
.search-box:focus-within{border-color:var(--brand);background:rgba(255,255,255,.09);}
.search-box svg{flex:none;opacity:.55;}
.search-input{
  width:150px;
  border:none;
  background:transparent;
  color:#fff;
  font-size:13px;
  outline:none;
  margin-left:8px;
}
.search-input::placeholder{color:rgba(242,244,243,.42);}
.link-login{
  display:none;
  font-size:14px;
  color:var(--on-dark-muted);
  padding:8px 10px;
  border-bottom:1px solid transparent;
  transition:color .15s ease-out,border-color .15s ease-out;
}
.link-login:hover{color:#fff;border-color:var(--accent);}
.btn-nav-cta{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#fff;
  font-size:14px;
  font-weight:700;
  transition:background-color .15s ease-out,transform .15s ease-out;
}
.btn-nav-cta:hover{background:var(--accent-deep);}
.btn-nav-cta:active{transform:translateY(1px);}
.nav-burger{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:4px;
  width:38px;height:38px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.14);
  padding:0 10px;
}
.nav-burger span{display:block;height:1.5px;background:#fff;border-radius:2px;}
.nav-burger span:nth-child(2){width:70%;}

.mobile-drawer{
  display:none;
  background:var(--ink);
  border-top:1px solid rgba(255,255,255,.08);
  padding:12px 20px 22px;
}
.mobile-drawer.is-open{display:block;}
.drawer-search{
  display:flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  margin-bottom:10px;
}
.drawer-search input{
  flex:1;
  margin-left:9px;
  border:none;background:transparent;
  color:#fff;font-size:14px;outline:none;
}
.drawer-search input::placeholder{color:rgba(242,244,243,.42);}
.drawer-link{
  display:block;
  padding:12px 4px;
  font-size:15px;
  color:var(--on-dark-muted);
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:color .15s ease-out,padding-left .15s ease-out;
}
.drawer-link:hover{color:#fff;padding-left:8px;}
.drawer-link.is-active{color:#fff;}
.drawer-cta{
  display:block;
  margin-top:16px;
  text-align:center;
  height:46px;
  line-height:46px;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#fff;
  font-weight:700;
}

@media (min-width:1024px){
  .nav-menu{display:flex;}
  .search-box{display:flex;}
  .link-login{display:inline-block;}
  .nav-burger{display:none;}
  .mobile-drawer{display:none !important;}
}
@media (max-width:640px){
  .cdbar-inner{height:46px;padding:0 16px;gap:10px;}
  .cd-label{font-size:12px;}
  .cd-timer{font-size:13px;}
  .cd-link{font-size:12px;}
  .nav-inner{padding:0 16px;height:60px;}
  .brand-text{font-size:15px;}
  .container{padding-left:16px;padding-right:16px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  transition:background-color .15s ease-out,color .15s ease-out,border-color .15s ease-out,transform .15s ease-out,box-shadow .15s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-deep);box-shadow:var(--shadow-card);}
.btn-primary:active{transform:translateY(1px);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-deep);}
.btn-outline{border:1px solid var(--line-strong);color:var(--text);background:transparent;}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-deep);background:rgba(18,179,154,.06);}
.btn-outline-dark{border:1px solid rgba(255,255,255,.28);color:#fff;background:transparent;}
.btn-outline-dark:hover{border-color:var(--brand);color:#fff;background:rgba(18,179,154,.16);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}

/* ---------- Hero ---------- */
.hero{
  background:var(--ink);
  color:var(--on-dark);
  position:relative;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.9;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:44px;
  padding:64px 0 72px;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1fr 1fr;gap:56px;padding:88px 0 96px;align-items:center;}
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;}
.hero-title{
  font-size:30px;
  font-weight:900;
  line-height:1.2;
  letter-spacing:-.02em;
  color:#fff;
  margin-bottom:18px;
}
@media (min-width:768px){.hero-title{font-size:40px;}}
@media (min-width:1280px){.hero-title{font-size:50px;}}
.hero-sub{
  font-size:16px;
  line-height:1.85;
  color:var(--on-dark-muted);
  max-width:560px;
  margin-bottom:14px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:18px 0 28px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:13px;
  color:var(--on-dark-muted);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.03);
}
.pill strong{color:var(--brand);font-weight:700;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
  margin-top:36px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.1);
}
.stat-num{
  font-size:26px;
  font-weight:900;
  color:#fff;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  line-height:1.2;
}
.stat-num em{font-style:normal;font-size:14px;color:var(--brand);margin-left:2px;font-weight:700;}
.stat-label{font-size:13px;color:var(--on-dark-muted);margin-top:2px;}
.hero-visual{
  position:relative;
  border-radius:14px;
  overflow:hidden;
  min-height:280px;
  border:1px solid rgba(255,255,255,.12);
  background-image:linear-gradient(180deg,rgba(15,20,23,.28) 0%,rgba(15,20,23,.86) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  display:flex;
  align-items:flex-end;
  padding:26px;
}
@media (min-width:1024px){.hero-visual{min-height:440px;}}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.hero-visual-inner{position:relative;z-index:2;}
.hero-visual-inner h2{
  font-size:20px;
  font-weight:800;
  color:#fff;
  margin-bottom:8px;
}
.hero-visual-inner p{font-size:14px;color:rgba(242,244,243,.78);line-height:1.75;max-width:420px;}
.hero-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ink);
  background:var(--brand);
  padding:4px 10px;
  border-radius:999px;
  margin-bottom:14px;
  font-weight:800;
}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0;}
@media (min-width:1024px){.section{padding:104px 0;}}
.section-dark{background:var(--ink);color:var(--on-dark);}
.section-head{margin-bottom:36px;}
@media (min-width:1024px){.section-head{margin-bottom:52px;}}
.sec-eyebrow{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--brand-deep);
  font-weight:700;
  margin-bottom:12px;
  text-transform:uppercase;
}
.section-dark .sec-eyebrow{color:var(--brand);}
.sec-title{
  font-size:26px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.3;
  color:var(--text);
}
@media (min-width:1024px){.sec-title{font-size:34px;}}
.section-dark .sec-title{color:#fff;}
.sec-desc{
  margin-top:12px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:720px;
}
.section-dark .sec-desc{color:var(--on-dark-muted);}
.head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}
.link-more{
  font-size:14px;
  color:var(--brand-deep);
  font-weight:700;
  border-bottom:1px solid transparent;
  transition:border-color .15s ease-out,color .15s ease-out;
}
.link-more:hover{border-color:var(--brand-deep);}

/* ---------- 卖点编号卡 ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:18px;
}
@media (min-width:768px){
  .feature-grid{grid-template-columns:repeat(6,1fr);}
  .feature-card.wide{grid-column:span 4;}
  .feature-card.slim{grid-column:span 2;}
  .feature-card.half{grid-column:span 3;}
}
.feature-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px 28px;
  box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  position:relative;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(18,179,154,.32);}
.feature-num{
  font-size:13px;
  font-weight:800;
  letter-spacing:.14em;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.feature-icon{
  width:38px;height:38px;
  border-radius:9px;
  background:rgba(18,179,154,.1);
  border:1px solid rgba(18,179,154,.22);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
  color:var(--brand-deep);
}
.feature-title{font-size:19px;font-weight:800;margin-bottom:8px;color:var(--text);}
.feature-text{font-size:14px;line-height:1.8;color:var(--muted);}

/* ---------- 参与流程 ---------- */
.steps{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  counter-reset:step;
}
@media (min-width:768px){.steps{grid-template-columns:repeat(4,1fr);}}
.step{
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-card);
  padding:24px 22px;
  background:rgba(255,255,255,.03);
  transition:border-color .18s ease-out,background-color .18s ease-out,transform .18s ease-out;
}
.step:hover{border-color:rgba(18,179,154,.5);background:rgba(18,179,154,.07);transform:translateY(-2px);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;
  border-radius:999px;
  background:var(--brand);
  color:#fff;
  font-size:13px;
  font-weight:800;
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.step-title{font-size:17px;font-weight:800;color:#fff;margin-bottom:7px;}
.step-text{font-size:14px;line-height:1.8;color:var(--on-dark-muted);}

/* ---------- 图墙 ---------- */
.gallery{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
}
@media (min-width:1024px){
  .gallery{grid-template-columns:repeat(6,1fr);gap:18px;}
  .g-item.a{grid-column:span 3;aspect-ratio:4/3;}
  .g-item.b{grid-column:span 3;aspect-ratio:16/9;margin-top:34px;}
  .g-item.c{grid-column:span 2;aspect-ratio:1/1;}
  .g-item.d{grid-column:span 2;aspect-ratio:3/4;}
  .g-item.e{grid-column:span 2;aspect-ratio:1/1;margin-top:-28px;}
  .g-item.f{grid-column:span 3;aspect-ratio:16/9;}
}
@media (max-width:1023px){
  .g-item{aspect-ratio:4/3;}
}
.g-item{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:#E4E1DA;
}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.g-item:hover img{transform:scale(1.04);}
.g-mask{
  position:absolute;
  inset:auto 0 0 0;
  padding:18px 16px 16px;
  background:linear-gradient(180deg,rgba(15,20,23,0) 0%,rgba(15,20,23,.86) 72%);
  color:#fff;
  transform:translateY(6px);
  transition:transform .25s ease-out;
}
.g-item:hover .g-mask{transform:translateY(0);}
.g-title{font-size:15px;font-weight:700;}
.g-line{width:26px;height:2px;background:var(--brand);border-radius:2px;margin-top:9px;}
.g-sub{font-size:12px;color:rgba(242,244,243,.7);margin-top:6px;}

/* ---------- CTA 表单 ---------- */
.cta-band{
  background:var(--ink);
  color:var(--on-dark);
  position:relative;
  overflow:hidden;
  padding:64px 0;
}
@media (min-width:1024px){.cta-band{padding:88px 0;}}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 1px,transparent 1px 14px);
  opacity:.7;
  pointer-events:none;
}
.cta-grid{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
  align-items:center;
}
@media (min-width:1024px){.cta-grid{grid-template-columns:1.1fr 1fr;gap:64px;}}
.cta-title{font-size:26px;font-weight:800;color:#fff;line-height:1.35;margin-bottom:14px;}
@media (min-width:1024px){.cta-title{font-size:34px;}}
.cta-desc{font-size:15px;line-height:1.85;color:var(--on-dark-muted);max-width:520px;}
.cta-list{margin-top:22px;display:grid;gap:10px;}
.cta-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--on-dark-muted);
}
.cta-list li::before{
  content:"";
  flex:none;
  width:6px;height:6px;
  margin-top:9px;
  border-radius:2px;
  background:var(--brand);
}
.form-card{
  background:#fff;
  border-radius:12px;
  padding:26px 24px;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 24px 48px -26px rgba(0,0,0,.6);
}
.form-card h3{font-size:18px;font-weight:800;color:var(--text);margin-bottom:6px;}
.form-card p.hint{font-size:13px;color:var(--muted);margin-bottom:18px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:700;color:var(--text);margin-bottom:7px;}
.input{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);
  background:#fff;
  color:var(--text);
  font-size:15px;
  transition:border-color .15s ease-out,box-shadow .15s ease-out;
}
.input::placeholder{color:#9AA5A1;}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,179,154,.16);}
.input.is-error{border-color:var(--accent);}
.field-msg{font-size:12px;color:var(--accent);margin-top:6px;display:none;}
.field-msg.is-show{display:block;}
.code-row{display:flex;gap:10px;}
.code-row .input{flex:1;}
.btn-code{
  flex:none;
  height:48px;
  padding:0 16px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);
  font-size:14px;
  font-weight:700;
  color:var(--text);
  background:#fff;
  transition:border-color .15s ease-out,color .15s ease-out;
}
.btn-code:hover{border-color:var(--brand);color:var(--brand-deep);}
.btn-code[disabled]{opacity:.5;pointer-events:none;}
.form-foot{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.7;}

/* ---------- 内容列表 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:22px;
}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.post-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(18,179,154,.3);}
.post-cover{
  position:relative;
  aspect-ratio:16/10;
  background:#E4E1DA;
  overflow:hidden;
}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.post-card:hover .post-cover img{transform:scale(1.03);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{
  font-size:17px;
  font-weight:800;
  line-height:1.5;
  color:var(--text);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-excerpt{
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-meta{
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:var(--muted);
}
.badge{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  color:var(--brand-deep);
  background:rgba(18,179,154,.12);
  white-space:nowrap;
}
.badge-accent{color:var(--accent-deep);background:rgba(255,106,61,.12);}
.empty-state{
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-card);
  background:#fff;
  padding:52px 24px;
  text-align:center;
}
.empty-icon{
  width:52px;height:52px;
  margin:0 auto 16px;
  border-radius:14px;
  background:rgba(18,179,154,.1);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-deep);
}
.empty-state h3{font-size:17px;font-weight:800;margin-bottom:8px;}
.empty-state p{font-size:14px;color:var(--muted);margin-bottom:20px;}
.skeleton{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:#fff;
  overflow:hidden;
}
.skeleton .sk-img{aspect-ratio:16/10;background:linear-gradient(90deg,#EFEDE7 25%,#E4E1DA 37%,#EFEDE7 63%);background-size:400% 100%;animation:sk 1.4s ease-in-out infinite;}
.skeleton .sk-line{height:12px;border-radius:6px;background:linear-gradient(90deg,#EFEDE7 25%,#E4E1DA 37%,#EFEDE7 63%);background-size:400% 100%;animation:sk 1.4s ease-in-out infinite;margin:16px 20px;}
.skeleton .sk-line.short{width:52%;}
@keyframes sk{0%{background-position:100% 0;}100%{background-position:0 0;}}

/* ---------- 证据/评价 ---------- */
.proof-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:18px;
}
@media (min-width:768px){.proof-grid{grid-template-columns:repeat(3,1fr);}}
.proof-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.proof-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);}
.proof-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:40px;height:40px;border-radius:999px;
  background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;flex:none;
}
.proof-name{font-size:15px;font-weight:800;}
.proof-role{font-size:12px;color:var(--muted);}
.proof-text{font-size:14px;line-height:1.85;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item:hover{border-color:rgba(18,179,154,.3);}
.faq-item.is-open{border-color:rgba(18,179,154,.42);box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  text-align:left;
  font-size:16px;
  font-weight:700;
  color:var(--text);
}
.faq-arrow{
  flex:none;
  width:20px;height:20px;
  position:relative;
  transition:transform .2s ease-out;
}
.faq-arrow::before,.faq-arrow::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  background:var(--brand-deep);
  border-radius:2px;
}
.faq-arrow::before{width:12px;height:2px;transform:translate(-50%,-50%);}
.faq-arrow::after{width:2px;height:12px;transform:translate(-50%,-50%);transition:opacity .2s ease-out;}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);}
.faq-item.is-open .faq-arrow::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease-out;
}
.faq-a-inner{
  padding:0 22px 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--muted);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--on-dark-muted);
  padding:64px 0 28px;
}
@media (min-width:1024px){.site-footer{padding:80px 0 32px;}}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:9px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-brand-text{font-size:17px;font-weight:800;color:#fff;}
.footer-text{font-size:14px;line-height:1.85;max-width:340px;}
.footer-title{font-size:13px;font-weight:800;letter-spacing:.1em;color:#fff;margin-bottom:16px;}
.footer-link{
  display:block;
  font-size:14px;
  line-height:1.9;
  color:var(--on-dark-muted);
  transition:color .15s ease-out,transform .15s ease-out;
}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
}
.footer-bottom a{transition:color .15s ease-out;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
    --ink:#0F1417;
    --ink-soft:#1A2124;
    --brand:#12B39A;
    --brand-dark:#0F9E89;
    --accent:#FF6A3D;
    --paper:#F5F3EE;
    --card:#FFFFFF;
    --text:#14181A;
    --text-dim:#5C6663;
    --line:rgba(15,20,23,.08);
    --dark-text:#F2F4F3;
    --dark-dim:#9AA5A1;
    --radius-card:10px;
    --radius-btn:8px;
    --shadow-card:0 12px 32px -18px rgba(15,20,23,.30);
    --shadow-hover:0 18px 40px -16px rgba(15,20,23,.42);
    --container:1240px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Segoe UI,Roboto,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font-family:inherit;font-size:inherit;}
  h1,h2,h3,h4,p{margin:0;}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

  /* ---------- 导航 ---------- */
  .nav{
    position:sticky;top:0;z-index:80;
    background:var(--ink);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-inner{
    max-width:var(--container);margin:0 auto;padding:0 24px;
    height:64px;display:flex;align-items:center;gap:26px;
  }
  .brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap;}
  .brand-mark{
    width:16px;height:16px;border-radius:4px;background:var(--brand);
    position:relative;flex:0 0 16px;
  }
  .brand-mark::after{
    content:"";position:absolute;inset:5px;border-radius:1px;background:var(--ink);
  }
  .nav-menu{display:flex;align-items:center;gap:24px;margin-left:8px;}
  .nav-link{
    position:relative;color:#C6CFCB;font-size:14.5px;font-weight:500;
    padding:6px 0;transition:color .15s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
    background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
  }
  .nav-link:hover{color:#fff;}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:#fff;}
  .nav-link.is-active::after{transform:scaleX(1);}
  .nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
  .search-box{
    display:flex;align-items:center;gap:8px;
    background:var(--ink-soft);border:1px solid rgba(255,255,255,.10);
    border-radius:var(--radius-btn);height:38px;padding:0 12px;
    transition:border-color .15s ease-out;
  }
  .search-box:focus-within{border-color:var(--brand);}
  .search-input{
    background:transparent;border:0;outline:none;color:var(--dark-text);
    width:150px;font-size:13.5px;
  }
  .search-input::placeholder{color:#7C8783;}
  .link-login{color:#C6CFCB;font-size:14.5px;transition:color .15s ease-out;}
  .link-login:hover{color:#fff;}
  .btn-nav-cta{
    display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--radius-btn);
    background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;
    transition:background-color .15s ease-out;
  }
  .btn-nav-cta:hover{background:var(--brand-dark);}
  .nav-burger{
    display:none;width:40px;height:38px;border-radius:var(--radius-btn);
    background:transparent;border:1px solid rgba(255,255,255,.16);
    flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;
  }
  .nav-burger span{display:block;width:16px;height:1.5px;background:#E7ECEA;border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;}
  .nav-burger.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
  .nav-burger.is-open span:nth-child(2){opacity:0;}
  .nav-burger.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}
  .mobile-drawer{
    display:none;flex-direction:column;gap:4px;
    padding:14px 24px 22px;background:var(--ink);
    border-top:1px solid rgba(255,255,255,.08);
  }
  .mobile-drawer.is-open{display:flex;}
  .drawer-search{
    display:flex;align-items:center;gap:8px;background:var(--ink-soft);
    border:1px solid rgba(255,255,255,.10);border-radius:var(--radius-btn);
    height:42px;padding:0 12px;margin-bottom:8px;
  }
  .drawer-search input{background:transparent;border:0;outline:none;color:var(--dark-text);width:100%;font-size:14px;}
  .drawer-link{color:#C6CFCB;font-size:15px;padding:10px 2px;border-bottom:1px solid rgba(255,255,255,.06);}
  .drawer-link.is-active{color:#fff;}
  .drawer-link:hover{color:#fff;}
  .drawer-cta{
    margin-top:14px;display:inline-flex;align-items:center;justify-content:center;
    height:44px;border-radius:var(--radius-btn);background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  }

  /* ---------- 按钮通用 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:background-color .15s ease-out,color .15s ease-out,border-color .15s ease-out,box-shadow .15s ease-out;
  }
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-dark);}
  .btn-outline{border-color:rgba(15,20,23,.20);color:var(--text);background:transparent;}
  .btn-outline:hover{border-color:var(--brand);color:var(--brand);}
  .btn-outline-light{border-color:rgba(255,255,255,.28);color:#EDF1EF;background:transparent;}
  .btn-outline-light:hover{border-color:#fff;color:#fff;}
  .btn:focus-visible,.btn-nav-cta:focus-visible,.link-login:focus-visible,.nav-burger:focus-visible{
    outline:2px solid rgba(18,179,154,.55);outline-offset:2px;
  }

  /* ---------- 面包屑 ---------- */
  .crumb-bar{background:var(--paper);border-bottom:1px solid var(--line);}
  .crumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--text-dim);padding:14px 0;
    letter-spacing:.02em;
  }
  .crumb a{color:var(--text-dim);transition:color .15s ease-out;}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:rgba(15,20,23,.22);}
  .crumb-current{color:var(--text);font-weight:500;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

  /* ---------- 文章头 ---------- */
  .article-head{padding:38px 0 30px;border-bottom:1px solid var(--line);}
  .article-head h1{
    font-size:clamp(28px,3.2vw,44px);
    line-height:1.24;font-weight:900;letter-spacing:-.02em;
    margin:16px 0 0;max-width:900px;
  }
  .badge{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    background:rgba(255,106,61,.13);color:#C8481F;
    font-size:12.5px;font-weight:600;letter-spacing:.05em;
  }
  .badge-brand{background:rgba(18,179,154,.13);color:#0B7C6B;}
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
    margin-top:20px;font-size:13.5px;color:var(--text-dim);letter-spacing:.02em;
  }
  .article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(15,20,23,.18);}

  /* ---------- 主体骨架 ---------- */
  .article-shell{
    display:grid;grid-template-columns:minmax(0,1fr);
    gap:56px;padding:48px 0 8px;
  }
  @media (min-width:1280px){
    .article-shell{grid-template-columns:minmax(0,1fr) 288px;gap:64px;}
  }
  .article-main{min-width:0;max-width:800px;margin:0 auto;}

  /* ---------- 正文排版 ---------- */
  .article-content{font-size:16px;line-height:1.9;color:#1C2225;}
  .article-content p{margin:0 0 1.25em;}
  .article-content h2{
    position:relative;
    font-size:clamp(21px,2.2vw,27px);font-weight:800;letter-spacing:-.01em;
    line-height:1.4;margin:2em 0 .8em;padding-left:14px;
  }
  .article-content h2::before{
    content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;background:var(--brand);
  }
  .article-content h3{
    font-size:19px;font-weight:700;line-height:1.5;margin:1.6em 0 .6em;
  }
  .article-content h4{font-size:16.5px;font-weight:700;margin:1.4em 0 .5em;}
  .article-content a{color:var(--brand);border-bottom:1px solid rgba(18,179,154,.35);}
  .article-content a:hover{border-bottom-color:var(--brand);}
  .article-content img{border-radius:10px;margin:1.6em 0;width:100%;height:auto;}
  .article-content figure{margin:1.6em 0;}
  .article-content figcaption,
  .article-content .caption{font-size:13px;color:var(--text-dim);text-align:center;margin-top:8px;}
  .article-content blockquote{
    margin:1.6em 0;padding:16px 20px;
    border-left:3px solid var(--accent);
    background:rgba(255,106,61,.06);
    border-radius:0 8px 8px 0;color:#2A3134;
  }
  .article-content blockquote p:last-child{margin-bottom:0;}
  .article-content ul,.article-content ol{margin:0 0 1.3em;padding-left:1.35em;}
  .article-content li{margin:.4em 0;}
  .article-content ul li::marker{color:var(--brand);}
  .article-content ol li::marker{color:var(--brand);font-weight:600;}
  .article-content pre{
    background:var(--ink);color:#E7ECEA;border-radius:10px;
    padding:18px 20px;overflow-x:auto;font-size:13.5px;line-height:1.7;
    font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
    margin:1.6em 0;
  }
  .article-content code{
    font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
    font-size:14px;background:rgba(15,20,23,.06);padding:2px 6px;border-radius:4px;
  }
  .article-content pre code{background:transparent;padding:0;color:inherit;}
  .article-content table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;}
  .article-content th,.article-content td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
  .article-content th{background:rgba(15,20,23,.04);font-weight:700;}
  .article-content hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}

  /* ---------- 空态 ---------- */
  .article-empty{
    border:1px dashed rgba(15,20,23,.18);border-radius:var(--radius-card);
    background:var(--card);padding:56px 28px;text-align:center;
  }
  .empty-icon{
    width:48px;height:48px;margin:0 auto 18px;border-radius:50%;
    background:rgba(18,179,154,.12);color:var(--brand);
    display:flex;align-items:center;justify-content:center;
    font-size:22px;font-weight:800;
  }
  .article-empty h2{font-size:22px;font-weight:800;margin-bottom:10px;}
  .article-empty p{color:var(--text-dim);font-size:15px;margin-bottom:24px;}

  /* ---------- 侧栏 ---------- */
  .side{display:none;}
  @media (min-width:1280px){
    .side{display:block;}
    .side-sticky{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px;}
  }
  .side-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:20px;box-shadow:var(--shadow-card);
  }
  .side-title{
    font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--text-dim);
    text-transform:uppercase;margin-bottom:14px;
  }
  .side-item{
    display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed rgba(15,20,23,.10);
    transition:color .15s ease-out;
  }
  .side-item:last-child{border-bottom:0;padding-bottom:0;}
  .side-item:hover .side-item-title{color:var(--brand);}
  .side-index{
    flex:0 0 22px;height:22px;border-radius:5px;background:rgba(18,179,154,.12);
    color:#0B7C6B;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
  }
  .side-item-title{font-size:14px;line-height:1.55;color:var(--text);transition:color .15s ease-out;}
  .side-note{font-size:13.5px;color:var(--text-dim);line-height:1.75;}
  .side-link{
    display:flex;align-items:center;justify-content:space-between;gap:8px;
    font-size:14px;color:var(--text-dim);padding:9px 0;
    border-bottom:1px solid var(--line);transition:color .15s ease-out,transform .15s ease-out;
  }
  .side-link:last-child{border-bottom:0;}
  .side-link:hover{color:var(--brand);transform:translateX(2px);}
  .side-cta{
    display:flex;align-items:center;justify-content:center;height:44px;
    border-radius:var(--radius-btn);background:var(--brand);color:#fff;font-weight:600;font-size:14.5px;
    transition:background-color .15s ease-out;
  }
  .side-cta:hover{background:var(--brand-dark);}

  /* ---------- 相关推荐 ---------- */
  .section{padding:72px 0 0;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
  .section-title{font-size:clamp(22px,2.4vw,29px);font-weight:800;letter-spacing:-.01em;line-height:1.3;}
  .section-sub{font-size:14px;color:var(--text-dim);margin-top:8px;}
  .rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
  .rel-card{
    display:flex;gap:14px;background:var(--card);
    border:1px solid var(--line);border-radius:var(--radius-card);
    padding:14px;box-shadow:var(--shadow-card);
    transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  }
  .rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(18,179,154,.35);}
  .rel-thumb{
    flex:0 0 84px;height:64px;border-radius:8px;overflow:hidden;background:#E8E5DE;
  }
  .rel-thumb img{width:100%;height:100%;object-fit:cover;}
  .rel-body{min-width:0;display:flex;flex-direction:column;justify-content:space-between;}
  .rel-title{
    font-size:14.5px;font-weight:600;line-height:1.55;color:var(--text);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .rel-date{font-size:12.5px;color:var(--text-dim);margin-top:8px;letter-spacing:.03em;}
  .rel-more{margin-top:28px;display:flex;justify-content:center;}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    margin-top:88px;background:var(--ink);color:var(--dark-text);
    position:relative;overflow:hidden;
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.06) 0 1px,transparent 1px 14px);
    opacity:.6;pointer-events:none;
  }
  .cta-inner{
    position:relative;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
    gap:48px;align-items:center;padding:60px 0;
  }
  .cta-title{font-size:clamp(23px,2.6vw,32px);font-weight:900;letter-spacing:-.01em;line-height:1.3;}
  .cta-desc{margin-top:14px;color:var(--dark-dim);font-size:15px;line-height:1.85;max-width:520px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
  .cta-panel{
    background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
    border-radius:var(--radius-card);padding:24px;
  }
  .cta-panel-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
  .field-label{display:block;font-size:13px;color:var(--dark-dim);margin-bottom:8px;letter-spacing:.03em;}
  .field-input{
    width:100%;height:48px;border-radius:var(--radius-btn);
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
    color:#F2F4F3;padding:0 14px;outline:none;
    transition:border-color .15s ease-out,background-color .15s ease-out;
  }
  .field-input::placeholder{color:#7C8783;}
  .field-input:focus{border-color:var(--brand);background:rgba(255,255,255,.09);}
  .field-row{display:flex;gap:12px;margin-bottom:14px;}
  .field-row .field-input{flex:1;min-width:0;}
  .code-btn{
    flex:0 0 108px;height:48px;border-radius:var(--radius-btn);
    background:transparent;border:1px solid rgba(255,255,255,.22);color:#E7ECEA;
    font-size:14px;cursor:pointer;transition:border-color .15s ease-out,color .15s ease-out;
  }
  .code-btn:hover{border-color:#fff;color:#fff;}
  .cta-submit{
    width:100%;height:48px;border:0;border-radius:var(--radius-btn);
    background:var(--brand);color:#fff;font-weight:700;font-size:15px;cursor:pointer;
    transition:background-color .15s ease-out;
  }
  .cta-submit:hover{background:var(--brand-dark);}
  .cta-hint{font-size:12.5px;color:#7C8783;margin-top:12px;line-height:1.7;}
  .cta-metrics{display:flex;flex-wrap:wrap;gap:32px;margin-top:32px;}
  .cta-metric-num{font-size:22px;font-weight:800;color:#fff;}
  .cta-metric-label{font-size:13px;color:var(--dark-dim);margin-top:4px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:var(--dark-dim);margin-top:0;padding:64px 0 0;}
  .footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;
    padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.09);
  }
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-mark{background:var(--brand);}
  .footer-brand .brand-mark::after{background:var(--ink);}
  .footer-brand-text{color:#fff;font-weight:800;font-size:16.5px;letter-spacing:-.01em;}
  .footer-title{color:#fff;font-size:14.5px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;}
  .footer-text{font-size:14px;line-height:1.85;color:var(--dark-dim);max-width:320px;}
  .footer-link{
    display:block;font-size:14px;color:var(--dark-dim);padding:6px 0;
    transition:color .15s ease-out,transform .15s ease-out;
  }
  .footer-link:hover{color:#fff;transform:translateX(2px);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
    padding:22px 0 30px;font-size:13px;color:#7C8783;
  }

  /* ---------- 滚动入场 ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .3s ease-out,transform .3s ease-out;}
  .reveal.is-visible{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    .reveal{opacity:1;transform:none;transition:none;}
    html{scroll-behavior:auto;}
    *{transition-duration:.001ms !important;}
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .article-shell{gap:0;padding-top:40px;}
  }
  @media (max-width:1023px){
    .nav-menu,.search-box,.link-login{display:none;}
    .nav-burger{display:flex;}
    .nav-inner{gap:16px;}
    .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .cta-inner{grid-template-columns:minmax(0,1fr);gap:32px;padding:48px 0;}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  }
  @media (max-width:640px){
    .container{padding:0 20px;}
    .nav-inner{padding:0 20px;height:60px;gap:12px;}
    .brand{font-size:15.5px;}
    .brand-text{max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
    .btn-nav-cta{height:36px;padding:0 14px;font-size:14px;}
    .article-head{padding:28px 0 24px;}
    .article-head h1{font-size:27px;}
    .article-meta{font-size:13px;gap:8px 14px;}
    .article-shell{padding-top:32px;}
    .article-content{font-size:15.5px;line-height:1.85;}
    .rel-grid{grid-template-columns:minmax(0,1fr);}
    .section{padding-top:56px;}
    .cta-band{margin-top:64px;}
    .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
    .footer-bottom{flex-direction:column;}
    .field-row{flex-wrap:wrap;}
    .code-btn{flex:1 1 100%;}
  }

/* roulang page: category1 */
:root{
  --ink:#0F1417;
  --brand:#12B39A;
  --brand-dark:#0E9A85;
  --accent:#FF6A3D;
  --accent-dark:#EE5A2C;
  --bg:#F5F3EE;
  --card:#FFFFFF;
  --text:#14181A;
  --muted:#5C6663;
  --d-text:#F2F4F3;
  --d-muted:#9AA5A1;
  --line:rgba(15,20,23,.08);
  --line-strong:rgba(15,20,23,.16);
  --r-card:10px;
  --r-btn:8px;
  --sh:0 12px 32px -18px rgba(15,20,23,.35);
  --sh-hover:0 20px 44px -18px rgba(15,20,23,.45);
  --sec:clamp(56px,7vw,104px);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
h1,h2,h3,h4,p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(18,179,154,.6);outline-offset:2px;border-radius:6px;}

.container{max-width:1240px;margin:0 auto;padding:0 24px;}
.sec{padding:var(--sec) 0;}
.nums{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 顶部提示条 ---------- */
.topbar{background:var(--ink);color:var(--d-muted);font-size:13px;}
.topbar-inner{
  max-width:1240px;margin:0 auto;padding:0 24px;height:44px;
  display:flex;align-items:center;gap:12px;
}
.topbar-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex:none;}
.topbar-label{color:#E7ECEA;font-weight:600;}
.topbar-time{font-variant-numeric:tabular-nums;}
.topbar-link{margin-left:auto;color:var(--brand);font-weight:600;border-bottom:1px solid transparent;transition:border-color .15s ease;white-space:nowrap;}
.topbar-link:hover{border-color:var(--brand);}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-inner{
  max-width:1240px;margin:0 auto;padding:0 24px;
  height:var(--nav-h);display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:16px;height:16px;border-radius:4px;background:var(--brand);display:inline-block;flex:none;}
.brand-text{color:#fff;font-weight:800;font-size:16px;letter-spacing:-.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:8px;}
.nav-link{
  position:relative;display:block;padding:8px 12px;border-radius:8px;
  color:#C9D2CF;font-size:14px;white-space:nowrap;
  transition:color .15s ease,background-color .15s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-link.is-active{color:#fff;font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:36px;padding:0 12px;border-radius:8px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.10);
  transition:border-color .15s ease,background-color .15s ease;
}
.search-box:focus-within{border-color:rgba(18,179,154,.7);background:rgba(255,255,255,.12);}
.search-input{
  width:170px;border:0;background:transparent;color:#F2F4F3;font-size:13px;outline:none;
}
.search-input::placeholder{color:#8A9491;}
.link-login{color:#C9D2CF;font-size:14px;padding:6px 4px;transition:color .15s ease;}
.link-login:hover{color:#fff;}
.btn-nav-cta{
  display:inline-block;background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  padding:9px 16px;border-radius:var(--r-btn);
  transition:background-color .15s ease,transform .15s ease;
}
.btn-nav-cta:hover{background:var(--brand-dark);}
.btn-nav-cta:active{transform:translateY(1px);}
.nav-burger{display:none;width:40px;height:40px;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:4px;}
.nav-burger span{display:block;width:18px;height:2px;background:#E7ECEA;border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  display:none;background:var(--ink);border-top:1px solid rgba(255,255,255,.08);
  padding:16px 24px 22px;
}
.mobile-drawer.is-open{display:block;}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;
  background:rgba(255,255,255,.08);border-radius:8px;margin-bottom:14px;
}
.drawer-search input{width:100%;border:0;background:transparent;color:#F2F4F3;outline:none;font-size:14px;}
.drawer-search input::placeholder{color:#8A9491;}
.drawer-link{
  display:block;padding:12px 6px;color:#C9D2CF;font-size:15px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.drawer-link:hover{color:#fff;}
.drawer-link.is-active{color:#fff;font-weight:700;}
.drawer-cta{
  display:block;margin-top:16px;text-align:center;background:var(--brand);color:#fff;
  font-weight:700;padding:12px;border-radius:var(--r-btn);
}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-color:var(--ink);
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(15,20,23,.94) 0%,rgba(15,20,23,.86) 55%,rgba(15,20,23,.72) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-inner{position:relative;z-index:2;padding:62px 0 54px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--d-muted);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{transition:color .15s ease;}
.crumb a:hover{color:#fff;}
.crumb .sep{opacity:.5;}
.page-hero h1{
  color:#fff;font-size:clamp(28px,3.6vw,44px);font-weight:900;line-height:1.16;
  letter-spacing:-.02em;max-width:840px;
}
.hero-sub{
  margin-top:16px;color:#C9D2CF;font-size:16px;line-height:1.85;max-width:640px;
}
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.anchor-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;color:#E7ECEA;
  border:1px solid rgba(255,255,255,.24);
  transition:background-color .15s ease,border-color .15s ease,color .15s ease;
}
.anchor-chip:hover{background:var(--brand);border-color:var(--brand);color:#fff;}

/* ---------- 通用标题 ---------- */
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--brand);
  font-weight:700;margin-bottom:12px;
}
.sec-title{font-size:clamp(26px,3vw,34px);font-weight:800;line-height:1.25;letter-spacing:-.02em;}
.sec-desc{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85;}

/* ---------- 交错双列 ---------- */
.alt-list{display:flex;flex-direction:column;gap:64px;}
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.alt-row.reverse .alt-body{order:1;}
.alt-row.reverse .alt-media{order:2;}
.alt-media{position:relative;}
.alt-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);border:1px solid var(--line);box-shadow:var(--sh);
}
.alt-media::after{
  content:"";position:absolute;left:-10px;top:-10px;width:56px;height:56px;
  border-left:2px solid var(--brand);border-top:2px solid var(--brand);border-radius:6px 0 0 0;
}
.num{
  display:block;font-size:13px;font-weight:700;letter-spacing:.16em;
  color:var(--accent);margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.alt-body h3{font-size:22px;font-weight:700;line-height:1.4;letter-spacing:-.01em;}
.alt-body p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.9;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-btn);font-size:14px;font-weight:600;
  transition:background-color .15s ease,color .15s ease,border-color .15s ease,transform .15s ease,box-shadow .15s ease;
}
.btn-outline{margin-top:22px;border:1px solid var(--line-strong);color:var(--text);background:transparent;}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);}
.btn-outline:active{transform:translateY(1px);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{border:1px solid rgba(255,255,255,.32);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.5);}

/* ---------- 准备清单 ---------- */
.prep{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.prep-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--sh);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.prep-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(18,179,154,.35);}
.prep-icon{
  width:38px;height:38px;border-radius:9px;background:rgba(18,179,154,.12);
  display:flex;align-items:center;justify-content:center;color:var(--brand);margin-bottom:16px;
}
.prep-card h3{font-size:18px;font-weight:700;}
.prep-card p{margin-top:10px;color:var(--muted);font-size:15px;line-height:1.85;}

/* ---------- 步骤 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step;}
.step-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 22px 24px;box-shadow:var(--sh);
  transition:transform .18s ease,box-shadow .18s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.step-no{
  font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.14em;
  font-variant-numeric:tabular-nums;
}
.step-card h3{margin-top:12px;font-size:17px;font-weight:700;}
.step-card p{margin-top:10px;color:var(--muted);font-size:14.5px;line-height:1.85;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item[open]{border-color:rgba(18,179,154,.42);box-shadow:var(--sh);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 22px;position:relative;
  font-size:16.5px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);transition:transform .2s ease-out;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);}
.faq-body{padding:0 22px 22px;color:var(--muted);font-size:15px;line-height:1.9;}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;background:var(--ink);overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:repeating-linear-gradient(135deg,#fff 0 1px,transparent 1px 14px);
}
.cta-inner{
  position:relative;z-index:1;padding:64px 0;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.3;letter-spacing:-.01em;}
.cta-inner p{margin-top:12px;color:var(--d-muted);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--d-muted);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand-text{color:#fff;font-weight:800;font-size:16px;}
.footer-text{color:var(--d-muted);font-size:14px;line-height:1.85;max-width:330px;}
.footer-title{color:#fff;font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;}
.footer-link{display:block;color:var(--d-muted);font-size:14px;padding:5px 0;transition:color .15s ease,transform .15s ease;}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:#7F8A87;font-size:13px;
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .3s ease-out,transform .3s ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{transition:none!important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-menu,.search-box,.link-login{display:none;}
  .nav-burger{display:flex;}
  .alt-row{grid-template-columns:1fr;gap:28px;}
  .alt-row.reverse .alt-body{order:2;}
  .alt-row.reverse .alt-media{order:1;}
  .prep-grid{grid-template-columns:1fr 1fr;}
  .step-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .nav-inner,.topbar-inner{padding:0 20px;}
  .mobile-drawer{padding:16px 20px 22px;}
  .hero-inner{padding:44px 0 40px;}
  .topbar-inner{font-size:12px;gap:8px;}
  .topbar-time{display:none;}
  .alt-list{gap:52px;}
  .cta-inner{padding:52px 0;}
}
@media (max-width:520px){
  .prep-grid,.step-grid,.footer-grid{grid-template-columns:1fr;}
  .hero-sub{font-size:15px;}
  .alt-body h3{font-size:20px;}
  .btn{width:100%;justify-content:center;}
  .cta-actions{width:100%;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  --ink:#0F1417;
  --ink-soft:#1A2124;
  --brand:#12B39A;
  --brand-deep:#0E9482;
  --accent:#FF6A3D;
  --accent-deep:#E8562C;
  --bg:#F5F3EE;
  --card:#FFFFFF;
  --text:#14181A;
  --text-soft:#5C6663;
  --dark-text:#F2F4F3;
  --dark-text-soft:#9AA5A1;
  --line:rgba(15,20,23,.08);
  --line-strong:rgba(15,20,23,.16);
  --radius-card:10px;
  --radius-btn:8px;
  --radius-badge:999px;
  --shadow-card:0 12px 32px -18px rgba(15,20,23,.35);
  --shadow-card-hover:0 18px 40px -20px rgba(15,20,23,.45);
  --shadow-form:0 18px 46px -22px rgba(0,0,0,.55);
  --dur:.2s;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,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:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
h1,h2,h3,h4,p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(18,179,154,.55);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 导航 ============ */
.nav{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:padding var(--dur) ease-out,border-color var(--dur) ease-out;
}
.nav-inner{
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  height:64px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:16px;
  height:16px;
  border-radius:4px;
  background:var(--brand);
  display:inline-block;
  position:relative;
  flex-shrink:0;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:4px 4px auto auto;
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--ink);
}
.brand-text{
  color:#fff;
  font-size:17px;
  font-weight:800;
  letter-spacing:.01em;
  white-space:nowrap;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
  flex:1 1 auto;
  min-width:0;
}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--dark-text-soft);
  border-radius:var(--radius-btn);
  white-space:nowrap;
  transition:color var(--dur) ease-out,background var(--dur) ease-out;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-link.is-active{color:#fff;font-weight:700;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.nav-right{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 12px;
  border-radius:var(--radius-badge);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  transition:border-color var(--dur) ease-out,background var(--dur) ease-out,width var(--dur) ease-out;
  width:196px;
}
.search-box:focus-within{
  border-color:rgba(18,179,154,.7);
  background:rgba(18,179,154,.08);
}
.search-input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  color:#fff;
  font-size:13.5px;
  outline:none;
}
.search-input::placeholder{color:var(--dark-text-soft);}
.link-login{
  font-size:14px;
  color:var(--dark-text-soft);
  padding:6px 4px;
  border-bottom:1px solid transparent;
  transition:color var(--dur) ease-out,border-color var(--dur) ease-out;
  white-space:nowrap;
}
.link-login:hover{color:#fff;border-color:var(--accent);}
.btn-nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:38px;
  padding:0 18px;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#fff;
  font-size:14px;
  font-weight:700;
  white-space:nowrap;
  transition:background var(--dur) ease-out,transform var(--dur) ease-out;
}
.btn-nav-cta:hover{background:var(--accent-deep);transform:translateY(-1px);}
.nav-burger{
  display:none;
  width:40px;
  height:38px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.14);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.nav-burger span{
  display:block;
  width:16px;
  height:2px;
  border-radius:2px;
  background:#fff;
  transition:transform var(--dur) ease-out,opacity var(--dur) ease-out;
}
.nav-burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-burger.is-open span:nth-child(2){opacity:0;}
.nav-burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  display:none;
  padding:16px 24px 22px;
  background:var(--ink-soft);
  border-top:1px solid rgba(255,255,255,.06);
}
.mobile-drawer.is-open{display:block;}
.drawer-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  margin-bottom:14px;
}
.drawer-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  color:#fff;
  outline:none;
  font-size:14px;
}
.drawer-search input::placeholder{color:var(--dark-text-soft);}
.drawer-link{
  display:block;
  padding:12px 4px;
  color:var(--dark-text-soft);
  font-size:15px;
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:color var(--dur) ease-out,padding-left var(--dur) ease-out;
}
.drawer-link:hover,.drawer-link.is-active{color:#fff;padding-left:8px;}
.drawer-link.is-active{font-weight:700;}
.drawer-cta{
  display:flex;
  align-items:center;
  justify-content:center;
  height:46px;
  margin-top:16px;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#fff;
  font-weight:700;
}

/* ============ 内页窄 Hero ============ */
.page-hero{
  position:relative;
  min-height:280px;
  display:flex;
  align-items:center;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(15,20,23,.86) 0%,rgba(15,20,23,.74) 55%,rgba(15,20,23,.9) 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--dark-text-soft);
  margin-bottom:16px;
  flex-wrap:wrap;
}
.crumb a{color:var(--dark-text-soft);transition:color var(--dur) ease-out;}
.crumb a:hover{color:#fff;}
.crumb span{opacity:.5;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 14px;
  border-radius:var(--radius-badge);
  border:1px solid rgba(255,106,61,.5);
  background:rgba(255,106,61,.12);
  color:#FFD9CB;
  font-size:12.5px;
  letter-spacing:.06em;
  margin-bottom:16px;
}
.hero-tag i{
  width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;
}
.page-hero h1{
  color:#fff;
  font-size:44px;
  line-height:1.15;
  font-weight:900;
  letter-spacing:-.02em;
  max-width:900px;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--brand);
}
.hero-desc{
  margin-top:16px;
  max-width:680px;
  color:rgba(242,244,243,.82);
  font-size:16.5px;
  line-height:1.85;
}
.hero-anchors{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}
.hero-anchors a{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 14px;
  border-radius:var(--radius-badge);
  border:1px solid rgba(255,255,255,.2);
  color:var(--dark-text);
  font-size:13.5px;
  background:rgba(255,255,255,.05);
  transition:border-color var(--dur) ease-out,background var(--dur) ease-out,color var(--dur) ease-out;
}
.hero-anchors a:hover{
  border-color:var(--brand);
  background:rgba(18,179,154,.16);
  color:#fff;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section.is-tight{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-kicker{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.12em;
  color:var(--brand-deep);
  font-weight:700;
  margin-bottom:10px;
}
.section-title{
  font-size:31px;
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.01em;
}
.section-sub{
  margin-top:12px;
  max-width:640px;
  color:var(--text-soft);
  font-size:15.5px;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-deep);
  font-size:14.5px;
  font-weight:700;
  border-bottom:1px solid rgba(18,179,154,.35);
  padding-bottom:2px;
  transition:color var(--dur) ease-out,border-color var(--dur) ease-out;
}
.link-more:hover{color:var(--accent-deep);border-color:var(--accent);}

.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  padding:0 0 28px;
  margin-bottom:8px;
  border-bottom:1px solid var(--line);
}
.filter-chip{
  height:36px;
  padding:0 16px;
  border-radius:var(--radius-badge);
  border:1px solid var(--line-strong);
  background:#fff;
  color:var(--text-soft);
  font-size:13.8px;
  transition:border-color var(--dur) ease-out,color var(--dur) ease-out,background var(--dur) ease-out,transform var(--dur) ease-out;
}
.filter-chip:hover{color:var(--text);border-color:rgba(15,20,23,.3);transform:translateY(-1px);}
.filter-chip.is-active{
  border-color:var(--accent);
  color:var(--accent-deep);
  font-weight:700;
  background:rgba(255,106,61,.07);
}

/* ============ 卡片网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:32px;
}
.mod-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out,border-color var(--dur) ease-out;
}
.mod-card:hover{
  transform:translateY(-1px);
  box-shadow:var(--shadow-card-hover);
  border-color:rgba(18,179,154,.4);
}
.mod-card.is-hidden{display:none;}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  background:#E7E5DE;
  overflow:hidden;
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease-out;
}
.mod-card:hover .card-media img{transform:scale(1.03);}
.card-badge{
  position:absolute;
  top:12px;
  left:12px;
  height:26px;
  padding:0 12px;
  display:inline-flex;
  align-items:center;
  border-radius:var(--radius-badge);
  background:rgba(15,20,23,.82);
  color:#fff;
  font-size:12px;
  letter-spacing:.04em;
}
.card-body{
  padding:20px 20px 22px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.card-index{
  font-size:12.5px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.08em;
  color:var(--brand-deep);
  font-weight:700;
  margin-bottom:8px;
}
.card-title{
  font-size:19px;
  font-weight:700;
  line-height:1.45;
  margin-bottom:10px;
}
.card-text{
  color:var(--text-soft);
  font-size:14.6px;
  line-height:1.8;
  flex:1;
}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-soft);
}
.card-foot .tag{
  color:var(--accent-deep);
  border:1px solid rgba(255,106,61,.35);
  background:rgba(255,106,61,.07);
  border-radius:var(--radius-badge);
  padding:2px 10px;
  font-size:12.5px;
}

/* ============ 模块拆解（两列） ============ */
.split{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:28px;
}
.panel h3{
  font-size:20px;
  font-weight:700;
  margin-bottom:14px;
}
.check-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:12px;
  color:var(--text-soft);
  font-size:15px;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:4px;
  top:11px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--brand);
}
.panel-note{
  margin-top:18px;
  padding:14px 16px;
  border-left:3px solid var(--brand);
  background:rgba(18,179,154,.08);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  color:var(--text-soft);
  font-size:14.4px;
}

/* ============ 步骤 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.step{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--shadow-card);
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out;
}
.step:hover{transform:translateY(-1px);box-shadow:var(--shadow-card-hover);}
.step-num{
  font-size:13px;
  font-variant-numeric:tabular-nums;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--accent-deep);
  margin-bottom:12px;
}
.step h3{font-size:17.5px;font-weight:700;margin-bottom:8px;}
.step p{color:var(--text-soft);font-size:14.6px;}

/* ============ 数据条 ============ */
.stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.stat{
  background:#fff;
  padding:26px 24px;
}
.stat b{
  display:block;
  font-size:30px;
  font-weight:900;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--ink);
}
.stat span{
  display:block;
  margin-top:6px;
  color:var(--text-soft);
  font-size:14px;
}

/* ============ FAQ ============ */
.faq-wrap{
  max-width:800px;
  margin:0 auto;
}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--dur) ease-out,box-shadow var(--dur) ease-out;
}
.faq-item.is-open{border-color:rgba(18,179,154,.45);box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  padding:18px 22px;
  font-size:16.5px;
  font-weight:700;
  color:var(--text);
}
.faq-icon{
  flex-shrink:0;
  width:22px;height:22px;
  position:relative;
  transition:transform var(--dur) ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand-deep);
  border-radius:2px;
}
.faq-icon::before{left:3px;top:10px;width:16px;height:2px;}
.faq-icon::after{left:10px;top:3px;width:2px;height:16px;transition:opacity var(--dur) ease-out;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease-out;
}
.faq-a-inner{
  padding:0 22px 20px;
  color:var(--text-soft);
  font-size:15px;
  line-height:1.85;
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  padding:88px 0;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  opacity:.05;
  background-image:repeating-linear-gradient(135deg,#fff 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-copy h2{
  color:#fff;
  font-size:30px;
  font-weight:800;
  letter-spacing:-.01em;
}
.cta-copy p{
  margin-top:12px;
  color:var(--dark-text-soft);
  font-size:15.6px;
  max-width:520px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:700;
  transition:background var(--dur) ease-out,color var(--dur) ease-out,border-color var(--dur) ease-out,transform var(--dur) ease-out;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-deep);transform:translateY(-1px);}
.btn-ghost{border:1px solid rgba(255,255,255,.32);color:#fff;background:transparent;}
.btn-ghost:hover{border-color:var(--brand);background:rgba(18,179,154,.14);}
.btn-outline-dark{
  border:1px solid var(--line-strong);
  color:var(--text);
  background:transparent;
  height:44px;
  padding:0 22px;
  font-size:14.5px;
}
.btn-outline-dark:hover{border-color:var(--brand);color:var(--brand-deep);}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  padding:72px 0 0;
  color:var(--dark-text-soft);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:52px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand-text{
  color:#fff;
  font-size:17px;
  font-weight:800;
}
.footer-text{
  color:var(--dark-text-soft);
  font-size:14.4px;
  line-height:1.85;
  max-width:340px;
}
.footer-title{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-link{
  display:block;
  color:var(--dark-text-soft);
  font-size:14.4px;
  padding:6px 0;
  transition:color var(--dur) ease-out,transform var(--dur) ease-out;
}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 30px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13.4px;
  color:var(--dark-text-soft);
}

/* ============ 动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .3s ease-out,transform .3s ease-out;
}
.reveal.is-in{opacity:1;transform:none;}

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

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-menu{display:none;}
  .search-box{display:none;}
  .nav-burger{display:flex;}
  .nav-inner{gap:16px;}
}
@media (max-width:1023px){
  .section{padding:76px 0;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-hero h1{font-size:36px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .container,.nav-inner{padding:0 20px;}
  .page-hero{min-height:250px;}
  .page-hero h1{font-size:30px;}
  .hero-desc{font-size:15.4px;}
  .section{padding:60px 0;}
  .section-title{font-size:25px;}
  .split{grid-template-columns:minmax(0,1fr);}
  .stats{grid-template-columns:minmax(0,1fr);}
  .link-login{display:none;}
}
@media (max-width:520px){
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .steps{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .page-hero h1{font-size:26px;}
  .cta-copy h2{font-size:24px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .brand-text{font-size:15.5px;}
  .section{padding:52px 0;}
  .panel{padding:22px;}
  .stat b{font-size:26px;}
}

/* roulang page: category3 */
:root{
    --ink:#0F1417;
    --brand:#12B39A;
    --brand-dark:#0EA189;
    --accent:#FF6A3D;
    --bg:#F5F3EE;
    --card:#FFFFFF;
    --text:#14181A;
    --muted:#5C6663;
    --dark-text:#F2F4F3;
    --dark-muted:#9AA5A1;
    --line:rgba(15,20,23,.08);
    --line-dark:rgba(242,244,243,.14);
    --radius:10px;
    --radius-sm:8px;
    --radius-pill:999px;
    --shadow:0 12px 32px -18px rgba(15,20,23,.38);
    --shadow-hover:0 20px 44px -22px rgba(15,20,23,.5);
    --sec-space:112px;
    --sec-space-sm:64px;
    --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.8;
    color:var(--text);
    background-color:var(--bg);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color .15s ease-out,background-color .15s ease-out,opacity .15s ease-out;}
  button{font-family:inherit;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid rgba(18,179,154,.55);outline-offset:2px;border-radius:4px;}

  body .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
  }

  /* ---------- 导航 ---------- */
  .nav{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--ink);
    border-bottom:1px solid transparent;
    transition:border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .nav.is-stuck{border-bottom-color:var(--line-dark);box-shadow:0 10px 30px -22px rgba(0,0,0,.7);}
  .nav-inner{
    max-width:1240px;
    margin:0 auto;
    padding:0 24px;
    height:64px;
    display:flex;
    align-items:center;
    gap:24px;
  }
  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{
    width:16px;height:16px;border-radius:4px;
    background:var(--brand);
    display:inline-block;
    position:relative;
    flex:0 0 16px;
  }
  .brand-mark::after{
    content:"";position:absolute;inset:4px 4px 4px 4px;background:var(--ink);border-radius:2px;
  }
  .brand-text{
    color:var(--dark-text);
    font-size:17px;
    font-weight:800;
    letter-spacing:-.01em;
    white-space:nowrap;
  }
  .nav-menu{
    display:flex;
    align-items:center;
    gap:4px;
    margin-left:8px;
    flex:1 1 auto;
  }
  .nav-link{
    display:inline-block;
    padding:8px 12px;
    border-radius:var(--radius-sm);
    font-size:14px;
    color:var(--dark-muted);
    letter-spacing:.02em;
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--dark-text);background:rgba(242,244,243,.07);}
  .nav-link.is-active{color:var(--dark-text);background:rgba(18,179,154,.14);box-shadow:inset 0 0 0 1px rgba(18,179,154,.4);}
  .nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
  .search-box{
    display:flex;align-items:center;gap:8px;
    height:38px;
    padding:0 12px;
    border-radius:var(--radius-pill);
    background:rgba(242,244,243,.07);
    border:1px solid var(--line-dark);
    transition:border-color .15s ease-out,background-color .15s ease-out;
  }
  .search-box:focus-within{border-color:rgba(18,179,154,.65);background:rgba(242,244,243,.1);}
  .search-input{
    width:170px;
    border:0;background:transparent;outline:none;
    color:var(--dark-text);
    font-size:13px;
    font-family:var(--font-cn);
  }
  .search-input::placeholder{color:rgba(154,165,161,.85);}
  .link-login{font-size:14px;color:var(--dark-muted);padding:8px 4px;}
  .link-login:hover{color:var(--dark-text);}
  .btn-nav-cta{
    display:inline-flex;align-items:center;justify-content:center;
    height:38px;padding:0 18px;
    border-radius:var(--radius-sm);
    background:var(--accent);
    color:#fff;
    font-size:14px;font-weight:700;
    white-space:nowrap;
    transition:background-color .15s ease-out,transform .15s ease-out;
  }
  .btn-nav-cta:hover{background:#f2551f;}
  .btn-nav-cta:active{transform:translateY(1px);}
  .nav-burger{
    display:none;
    width:40px;height:38px;
    border:1px solid var(--line-dark);
    border-radius:var(--radius-sm);
    background:transparent;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:4px;
  }
  .nav-burger span{display:block;width:16px;height:2px;background:var(--dark-text);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;}
  .nav-burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .nav-burger.is-open span:nth-child(2){opacity:0;}
  .nav-burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
  .mobile-drawer{
    display:none;
    background:var(--ink);
    border-top:1px solid var(--line-dark);
    padding:16px 24px 24px;
  }
  .mobile-drawer.is-open{display:block;}
  .drawer-search{
    display:flex;align-items:center;gap:8px;
    height:44px;padding:0 14px;
    border-radius:var(--radius-sm);
    background:rgba(242,244,243,.07);
    border:1px solid var(--line-dark);
    margin-bottom:12px;
  }
  .drawer-search input{
    flex:1;border:0;background:transparent;outline:none;
    color:var(--dark-text);font-size:14px;font-family:var(--font-cn);
  }
  .drawer-search input::placeholder{color:rgba(154,165,161,.85);}
  .drawer-link{
    display:block;
    padding:12px 10px;
    border-radius:var(--radius-sm);
    color:var(--dark-muted);
    font-size:15px;
    border-bottom:1px solid var(--line-dark);
  }
  .drawer-link:hover{color:var(--dark-text);background:rgba(242,244,243,.06);}
  .drawer-link.is-active{color:var(--dark-text);background:rgba(18,179,154,.14);}
  .drawer-cta{
    display:block;margin-top:16px;text-align:center;
    height:46px;line-height:46px;
    border-radius:var(--radius-sm);
    background:var(--accent);
    color:#fff;font-weight:700;font-size:15px;
  }

  /* ---------- 通用板块 ---------- */
  .section{padding-top:var(--sec-space);}
  .section:last-of-type{padding-bottom:var(--sec-space);}
  .sec-head{max-width:760px;margin-bottom:40px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.14em;
    color:var(--brand);font-weight:700;
    text-transform:uppercase;
    margin-bottom:14px;
  }
  .eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px;}
  .sec-title{
    font-size:32px;font-weight:800;line-height:1.25;
    letter-spacing:-.02em;color:var(--text);
  }
  .sec-sub{margin-top:14px;font-size:15px;color:var(--muted);line-height:1.85;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;
    height:48px;padding:0 24px;
    border-radius:var(--radius-sm);
    font-size:15px;font-weight:700;
    transition:background-color .15s ease-out,color .15s ease-out,border-color .15s ease-out,transform .15s ease-out;
    border:1px solid transparent;
  }
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-dark);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-outline{border-color:rgba(15,20,23,.18);color:var(--text);background:transparent;}
  .btn-outline:hover{border-color:var(--brand);color:var(--brand);}
  .btn-ghost-light{border-color:rgba(242,244,243,.32);color:var(--dark-text);background:transparent;}
  .btn-ghost-light:hover{background:rgba(242,244,243,.1);border-color:rgba(242,244,243,.55);}
  .btn-sm{height:42px;padding:0 18px;font-size:14px;}

  /* ---------- 分类页窄 Hero ---------- */
  .page-hero{
    position:relative;
    background-color:var(--ink);
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
    overflow:hidden;
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(115deg,rgba(15,20,23,.94) 0%,rgba(15,20,23,.82) 55%,rgba(15,20,23,.88) 100%);
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(242,244,243,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(242,244,243,.06) 1px,transparent 1px);
    background-size:56px 56px;
    opacity:.5;
    pointer-events:none;
  }
  .page-hero-inner{position:relative;z-index:2;padding:78px 0 66px;max-width:820px;}
  .crumb{
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
    font-size:13px;color:var(--dark-muted);margin-bottom:18px;
  }
  .crumb a:hover{color:var(--dark-text);}
  .crumb span.sep{color:rgba(154,165,161,.55);}
  .page-hero h1{
    font-size:42px;line-height:1.18;font-weight:900;
    letter-spacing:-.02em;color:#fff;
  }
  .page-hero h1 em{font-style:normal;color:var(--brand);}
  .page-hero-desc{margin-top:18px;font-size:16px;line-height:1.85;color:rgba(242,244,243,.82);max-width:620px;}
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:7px 14px;
    border-radius:var(--radius-pill);
    border:1px solid rgba(242,244,243,.24);
    color:rgba(242,244,243,.86);
    font-size:13px;letter-spacing:.04em;
    transition:border-color .15s ease-out,background-color .15s ease-out,color .15s ease-out;
  }
  .tag:hover{border-color:var(--brand);background:rgba(18,179,154,.16);color:#fff;}

  /* ---------- 自检清单 ---------- */
  .selfcheck-grid{
    display:grid;
    grid-template-columns:1.15fr .85fr;
    gap:32px;
    align-items:start;
  }
  .check-list{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:14px;
  }
  .check-item{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    padding:20px;
    transition:box-shadow .2s ease-out,transform .2s ease-out;
  }
  .check-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-1px);}
  .check-top{display:flex;align-items:center;gap:10px;margin-bottom:8px;}
  .check-box{
    width:18px;height:18px;border-radius:5px;
    border:1.5px solid rgba(18,179,154,.65);
    background:rgba(18,179,154,.12);
    position:relative;flex:0 0 18px;
  }
  .check-box::after{
    content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;
    border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
    transform:rotate(40deg);
  }
  .check-name{font-size:15px;font-weight:700;color:var(--text);}
  .check-desc{font-size:14px;line-height:1.8;color:var(--muted);}
  .selfcheck-aside{
    background:var(--ink);
    border-radius:var(--radius);
    overflow:hidden;
    border:1px solid rgba(15,20,23,.6);
  }
  .selfcheck-aside img{width:100%;height:190px;object-fit:cover;}
  .aside-body{padding:22px;}
  .aside-title{font-size:17px;font-weight:700;color:var(--dark-text);margin-bottom:10px;}
  .aside-text{font-size:14px;line-height:1.85;color:var(--dark-muted);}
  .aside-line{height:1px;background:var(--line-dark);margin:16px 0;}
  .aside-meta{font-size:13px;color:var(--dark-muted);letter-spacing:.04em;}

  /* ---------- 时间轴（问题处理路径） ---------- */
  .timeline{position:relative;padding-left:34px;}
  .timeline::before{
    content:"";position:absolute;left:9px;top:10px;bottom:10px;width:2px;
    background:linear-gradient(180deg,rgba(18,179,154,.55),rgba(15,20,23,.1));
    border-radius:2px;
  }
  .tl-item{position:relative;padding-bottom:22px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-dot{
    position:absolute;left:-34px;top:26px;
    width:20px;height:20px;border-radius:50%;
    background:var(--card);
    border:2px solid var(--brand);
    box-shadow:0 0 0 4px rgba(18,179,154,.12);
  }
  .tl-item.is-key .tl-dot{border-color:var(--accent);box-shadow:0 0 0 4px rgba(255,106,61,.14);}
  .tl-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    padding:24px 26px;
    transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
  }
  .tl-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-1px);border-color:rgba(18,179,154,.35);}
  .tl-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px;}
  .tl-date{
    font-family:var(--font-num);
    font-size:13px;letter-spacing:.04em;
    color:var(--muted);
    font-variant-numeric:tabular-nums;
  }
  .tl-badge{
    display:inline-flex;align-items:center;
    padding:3px 11px;border-radius:var(--radius-pill);
    background:rgba(18,179,154,.12);
    color:var(--brand-dark);
    font-size:12px;font-weight:700;letter-spacing:.05em;
  }
  .tl-item.is-key .tl-badge{background:rgba(255,106,61,.12);color:#D9502A;}
  .tl-title{font-size:20px;font-weight:700;color:var(--text);letter-spacing:-.01em;margin-bottom:10px;}
  .tl-text{font-size:15px;line-height:1.9;color:var(--muted);max-width:820px;}
  .tl-link{
    display:inline-flex;align-items:center;gap:8px;
    margin-top:14px;
    font-size:14px;font-weight:700;color:var(--brand-dark);
    border-bottom:1px solid transparent;
    padding-bottom:2px;
  }
  .tl-link:hover{border-bottom-color:var(--brand);}
  .tl-link span{transition:transform .15s ease-out;}
  .tl-link:hover span{transform:translateX(3px);}

  /* ---------- 数据条 ---------- */
  .stat-strip{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    margin-top:40px;
  }
  .stat-cell{background:var(--card);padding:26px 24px;}
  .stat-num{
    font-family:var(--font-num);
    font-size:30px;font-weight:700;color:var(--ink);
    letter-spacing:-.02em;font-variant-numeric:tabular-nums;
  }
  .stat-num small{font-size:14px;font-weight:600;color:var(--brand-dark);margin-left:4px;}
  .stat-label{margin-top:6px;font-size:14px;color:var(--muted);}

  /* ---------- 帮助卡 ---------- */
  .help-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .help-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    padding:30px 28px;
    transition:box-shadow .2s ease-out,transform .2s ease-out;
  }
  .help-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-1px);}
  .help-icon{
    width:40px;height:40px;border-radius:10px;
    background:rgba(18,179,154,.12);
    color:var(--brand-dark);
    display:flex;align-items:center;justify-content:center;
    font-family:var(--font-num);font-weight:700;font-size:15px;
    margin-bottom:16px;
  }
  .help-card h3{font-size:19px;font-weight:700;margin-bottom:10px;}
  .help-card p{font-size:15px;line-height:1.85;color:var(--muted);}
  .help-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:700;color:var(--brand-dark);}
  .help-link:hover{color:var(--ink);}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;
    background:var(--ink);
    overflow:hidden;
    margin-top:var(--sec-space);
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:repeating-linear-gradient(45deg,rgba(242,244,243,.05) 0 1px,transparent 1px 12px);
    opacity:.9;pointer-events:none;
  }
  .cta-inner{
    position:relative;z-index:2;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    padding:56px 0;
  }
  .cta-title{font-size:28px;font-weight:800;color:#fff;letter-spacing:-.02em;}
  .cta-text{margin-top:10px;font-size:15px;color:var(--dark-muted);max-width:560px;}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--ink);
    padding:72px 0 28px;
    color:var(--dark-muted);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.1fr;
    gap:36px;
    padding-bottom:44px;
    border-bottom:1px solid var(--line-dark);
  }
  .footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand-text{color:var(--dark-text);font-size:17px;font-weight:800;letter-spacing:-.01em;}
  .footer-title{color:var(--dark-text);font-size:15px;font-weight:700;margin-bottom:14px;}
  .footer-text{font-size:14px;line-height:1.85;color:var(--dark-muted);}
  .footer-link{
    display:block;
    font-size:14px;
    color:var(--dark-muted);
    padding:5px 0;
    transition:color .15s ease-out,transform .15s ease-out;
  }
  .footer-link:hover{color:#fff;transform:translateX(2px);}
  .footer-bottom{
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding-top:22px;
    font-size:13px;color:rgba(154,165,161,.8);
  }

  /* ---------- 动效 ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .3s ease-out,transform .3s ease-out;}
  .reveal.is-visible{opacity:1;transform:none;}

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

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .nav-menu,.search-box,.link-login{display:none;}
    .nav-burger{display:flex;}
    .nav-inner{height:60px;}
    .page-hero-inner{padding:64px 0 56px;}
    .page-hero h1{font-size:34px;}
    :root{--sec-space:76px;}
    .selfcheck-grid{grid-template-columns:1fr;}
    .help-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  }

  @media (max-width:768px){
    body{font-size:15px;}
    .sec-title{font-size:26px;}
    .check-list{grid-template-columns:1fr;}
    .stat-strip{grid-template-columns:1fr;}
    .timeline{padding-left:26px;}
    .timeline::before{left:6px;}
    .tl-dot{left:-26px;width:16px;height:16px;top:24px;}
    .tl-card{padding:20px;}
    .tl-title{font-size:18px;}
    .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 0;}
    .cta-title{font-size:23px;}
    .page-hero h1{font-size:30px;}
  }

  @media (max-width:520px){
    body .container{padding-left:18px;padding-right:18px;}
    .nav-inner{padding:0 18px;gap:12px;}
    .mobile-drawer{padding:14px 18px 22px;}
    .brand-text{font-size:15px;}
    .btn-nav-cta{height:36px;padding:0 14px;font-size:13px;}
    .page-hero-inner{padding:52px 0 46px;}
    .page-hero h1{font-size:26px;}
    .page-hero-desc{font-size:15px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;gap:6px;}
    .btn{width:100%;}
    .cta-actions{width:100%;}
    .stat-num{font-size:26px;}
  }