/* roulang page: index */
:root{
  --ink:#16453F;
  --ink-soft:#1F5A52;
  --clay:#D2603A;
  --clay-dark:#B94E2C;
  --moss:#C9A227;
  --paper:#F7F5F0;
  --sand:#EFEBE3;
  --deep:#0F1F1D;
  --text:#1B2320;
  --muted:#5C6A65;
  --inv:#F4F2EC;
  --line:#DDD8CD;
  --ok:#2E7D5B;
  --warn:#B4552F;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(15,31,29,.06);
  --sh-2:0 10px 26px -14px rgba(15,31,29,.22);
  --mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--sans);
  color:var(--ink);
  letter-spacing:-0.02em;
  line-height:1.22;
  font-weight:700;
  margin:0;
}
h1{font-size:42px;}
h2{font-size:30px;}
h3{font-size:21px;letter-spacing:-0.01em;}
p{margin:0 0 1em;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--clay);}
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--ink);
  outline-offset:3px;
  border-radius:4px;
}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-0.01em;}

.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
@media screen and (max-width:1023px){
  .grid-container{padding-left:18px;padding-right:18px;}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid var(--line);
}
.brand-row{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
  transition:height .22s ease;
}
.is-stuck .brand-row{height:56px;}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
}
.brand:hover{color:var(--ink);}
.brand-seal{
  width:28px;height:28px;
  border:1.5px solid var(--ink);
  border-radius:4px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;color:var(--ink);
  line-height:1;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.02em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.14em;margin-top:3px;}
.brand-meta{
  display:flex;flex-wrap:wrap;gap:18px;
  font-size:13px;color:var(--muted);
  margin-right:auto;
  padding-left:8px;
  border-left:1px solid var(--line);
  padding-left:20px;
}
.brand-meta span{display:inline-flex;align-items:center;gap:6px;}
.brand-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--ok);display:inline-block;}
.brand-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:16px;
  font-weight:600;
  line-height:1;
  border-radius:var(--r-btn);
  padding:0 22px;
  height:48px;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  text-align:center;
}
.btn--primary{
  background:var(--clay);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn--primary:hover{
  background:var(--clay-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn--ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--ink);
}
.btn--ghost:hover{background:#E6EDE9;color:var(--ink);}
.btn--sm{height:40px;font-size:14px;padding:0 16px;}
.btn--block{width:100%;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;}

.text-link{
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  transition:color .18s ease,border-color .18s ease;
}
.text-link:hover{color:var(--clay);border-color:var(--clay);}

.nav-toggle{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:8px;
  background:transparent;
  align-items:center;justify-content:center;
  cursor:pointer;
  color:var(--ink);
}
.nav-toggle span{
  display:block;width:16px;height:1.5px;background:currentColor;position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;background:currentColor;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

.channel-row{
  border-top:1px solid var(--line);
  overflow-x:auto;
  overflow-y:hidden;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
  position:relative;
  mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 28px),transparent 100%);
  -webkit-mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 28px),transparent 100%);
}
.channel-row::-webkit-scrollbar{display:none;}
.channel-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:52px;
  white-space:nowrap;
}
.channel-inner a{
  font-size:15px;
  color:var(--muted);
  padding:15px 0 13px;
  border-bottom:3px solid transparent;
  font-weight:500;
  transition:color .18s ease,border-color .18s ease;
}
.channel-inner a:hover{color:var(--ink);border-bottom-color:transparent;}
.channel-inner a.is-active{
  color:var(--ink);
  font-weight:600;
  border-bottom-color:var(--ink);
}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:var(--paper);
  padding:16px 0 22px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel ul{display:flex;flex-direction:column;gap:2px;margin-bottom:16px;}
.mobile-panel ul a{
  display:block;
  padding:11px 2px;
  font-size:15px;
  color:var(--text);
  border-bottom:1px dashed var(--line);
}
.mobile-panel ul a.is-active{color:var(--ink);font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--sand{background:var(--sand);}
.section--paper{background:var(--paper);}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.sec-head .eyebrow{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--muted);
  font-family:var(--mono);
  display:block;
  margin-bottom:10px;
}
.sec-head p{color:var(--muted);font-size:15px;margin:10px 0 0;max-width:640px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background-color:var(--paper);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center right;
  padding:72px 0 88px;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(247,245,240,.97) 0%,rgba(247,245,240,.93) 52%,rgba(247,245,240,.72) 100%);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  top:-140px;right:-140px;
  width:540px;height:540px;
  border-radius:50%;
  background:repeating-radial-gradient(circle,rgba(22,69,63,.07) 0 1px,transparent 1px 26px);
  pointer-events:none;
}
.hero .grid-container{position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--ink);
  border:1px solid var(--ink);
  border-radius:999px;
  padding:6px 14px;
  background:var(--sand);
  margin-bottom:22px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--ok);display:inline-block;font-style:normal;}
.hero h1{font-size:42px;line-height:1.22;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--clay);}
.hero-sub{
  font-size:17px;
  color:var(--muted);
  line-height:1.8;
  max-width:560px;
  margin-bottom:26px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:12px;}
.hero-note{font-size:13px;color:var(--muted);margin-bottom:30px;}
.hero-note .num{color:var(--ink);}
.point-list{display:flex;flex-wrap:wrap;gap:28px;margin-bottom:30px;}
.point-item{display:flex;gap:12px;align-items:flex-start;max-width:250px;}
.point-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  border:1.5px solid var(--ink);
  border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
  font-family:var(--mono);
  color:var(--ink);
  margin-top:3px;
}
.point-item strong{display:block;font-size:15px;color:var(--text);font-weight:600;margin-bottom:4px;}
.point-item span{display:block;font-size:13px;color:var(--muted);line-height:1.7;}
.trust-row{
  display:flex;flex-wrap:wrap;gap:26px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.trust-row b{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:16px;color:var(--ink);font-weight:600;margin-right:6px;}

.hero-visual{position:relative;padding-top:6px;}
.shot-frame{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  background:var(--sand);
  aspect-ratio:4 / 3;
}
.shot-frame img{width:100%;height:100%;object-fit:cover;}
.spec-card{
  position:relative;
  margin-top:-46px;
  margin-left:auto;
  margin-right:-8px;
  width:min(340px,100%);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  padding:18px 20px;
}
.spec-card h3{font-size:14px;letter-spacing:.08em;color:var(--muted);font-weight:600;margin-bottom:12px;}
.spec-card dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:9px 16px;font-size:13px;}
.spec-card dt{color:var(--muted);}
.spec-card dd{margin:0;text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink);font-weight:500;}

/* ---------- 价值点条 ---------- */
.value-strip{background:var(--paper);border-bottom:1px solid var(--line);}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;}
.value-cell{
  padding:36px 30px;
  border-left:1px solid var(--line);
}
.value-cell:first-child{border-left:0;padding-left:0;}
.value-cell:last-child{padding-right:0;}
.value-num{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--clay);
  display:block;
  margin-bottom:12px;
}
.value-cell h3{font-size:19px;margin-bottom:10px;}
.value-cell p{font-size:14.5px;color:var(--muted);line-height:1.75;margin:0;}

/* ---------- 截图轮播 ---------- */
.carousel-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px;}
.carousel-nav{display:flex;gap:10px;}
.carousel-btn{
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--paper);
  color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
  font-size:16px;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.carousel-btn:hover{background:var(--ink);color:var(--inv);border-color:var(--ink);}
.shot-track{
  display:flex;
  gap:24px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scroll-behavior:smooth;
  padding-bottom:8px;
  scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 40%;
  scroll-snap-align:start;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:16px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.shot-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#C9C2B2;}
.shot-card .thumb{
  aspect-ratio:16 / 10;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--sand);
  margin-bottom:14px;
}
.shot-card .thumb img{width:100%;height:100%;object-fit:cover;}
.shot-card h3{font-size:18px;margin-bottom:8px;}
.shot-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.7;}
.dots{display:flex;gap:8px;justify-content:center;margin-top:26px;}
.dots button{
  width:6px;height:6px;border-radius:999px;border:0;background:#C8C2B5;cursor:pointer;padding:0;
  transition:width .2s ease,background .2s ease;
}
.dots button.is-active{width:18px;background:var(--ink);}

/* ---------- 注册三步 ---------- */
.steps-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:8px;}
.step{
  position:relative;
  padding:0 28px 0 0;
}
.step::after{
  content:"";
  position:absolute;
  top:15px;left:44px;right:8px;
  height:1px;
  background:var(--line);
}
.step:last-child::after{display:none;}
.step-seal{
  width:30px;height:30px;
  border:1.5px solid var(--ink);
  border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink);
  background:var(--paper);
  position:relative;
  z-index:2;
  margin-bottom:18px;
}
.step h3{font-size:19px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.75;}
.steps-cta{margin-top:34px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.steps-cta span{font-size:13px;color:var(--muted);}

/* ---------- 系统要求 ---------- */
.req-note{font-size:13px;color:var(--muted);margin-bottom:26px;}
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.req-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:24px;
}
.req-card h3{
  font-size:17px;
  display:flex;align-items:center;gap:9px;
  margin-bottom:16px;
}
.req-card h3 i{width:8px;height:8px;border-radius:50%;background:var(--ink);display:inline-block;}
.req-card:nth-child(2) h3 i{background:var(--clay);}
.req-card:nth-child(3) h3 i{background:var(--moss);}
.req-row{
  display:flex;
  gap:12px;
  padding:9px 0;
  border-bottom:1px dashed var(--line);
  font-size:14px;
}
.req-row:last-child{border-bottom:0;}
.req-row dt{flex:0 0 34%;color:var(--muted);margin:0;}
.req-row dd{
  flex:1 1 66%;
  margin:0;
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  color:var(--ink);
  font-size:13.5px;
  text-align:right;
}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.review-col{display:flex;flex-direction:column;gap:24px;}
.review-col:nth-child(2){margin-top:24px;}
.review-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:22px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.review-card:nth-child(even){background:var(--sand);}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.stars{color:var(--moss);font-size:14px;letter-spacing:2px;margin-bottom:10px;}
.review-card p{font-size:15px;line-height:1.75;margin:0 0 14px;color:var(--text);}
.review-meta{
  display:flex;flex-wrap:wrap;gap:10px;
  font-size:12.5px;color:var(--muted);
  border-top:1px solid var(--line);
  padding-top:12px;
}
.review-meta b{color:var(--ink);font-weight:600;}

/* ---------- 最新资讯 ---------- */
.latest .sec-head{border-bottom:1px solid var(--line);padding-bottom:18px;}
.post-lead{
  display:block;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
  height:100%;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-lead:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#C9C2B2;}
.post-lead h3{font-size:23px;margin:12px 0 12px;line-height:1.35;}
.post-lead p{font-size:14.5px;color:var(--muted);line-height:1.8;margin:0 0 18px;}
.post-meta{display:flex;flex-wrap:wrap;gap:14px;align-items:center;font-size:13px;color:var(--muted);}
.post-mini{
  display:block;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  transition:color .18s ease;
}
.post-mini:first-child{padding-top:0;}
.post-mini:last-child{border-bottom:0;padding-bottom:0;}
.post-mini h3{font-size:16.5px;line-height:1.5;margin:8px 0 6px;color:var(--ink);transition:color .18s ease;}
.post-mini:hover h3{color:var(--clay);}
.post-mini p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.7;}
.badge{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  letter-spacing:.08em;
  padding:3px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--sand);
  color:var(--ink);
  line-height:1.6;
}
.empty-state{
  min-height:160px;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  text-align:center;
  padding:24px;
}
.empty-state p{margin:0;font-size:14.5px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:760px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 0;
  font-size:16px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-family:var(--mono);
  font-size:20px;
  font-weight:400;
  color:var(--ink);
  line-height:1;
  flex:0 0 auto;
}
.faq-item[open] summary::after{content:"−";}
.faq-item[open] summary{color:var(--ink);}
.faq-body{
  border-top:1px dashed var(--line);
  padding:16px 0 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- 下载大区块 ---------- */
.dl-band{
  background:var(--deep);
  color:var(--inv);
  padding:72px 0;
}
.dl-band h2{color:var(--inv);font-size:30px;margin-bottom:14px;}
.dl-band p{color:rgba(244,242,236,.72);font-size:15px;max-width:520px;}
.dl-band .btn--primary{height:52px;min-width:220px;flex-direction:column;gap:2px;line-height:1.25;padding:0 26px;}
.dl-band .btn--primary small{font-size:12px;font-weight:400;opacity:.88;font-family:var(--mono);}
.dl-band .btn--ghost{height:46px;color:var(--inv);border-color:rgba(244,242,236,.4);}
.dl-band .btn--ghost:hover{background:rgba(244,242,236,.1);color:var(--inv);}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.qr-box{
  background:var(--paper);
  border-radius:8px;
  width:120px;height:120px;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);
  font-size:12px;
  text-align:center;
  line-height:1.5;
  padding:10px;
  border:1px solid rgba(244,242,236,.14);
}
.qr-meta{margin-top:16px;font-size:13px;color:rgba(244,242,236,.7);display:grid;gap:6px;}
.qr-meta b{font-family:var(--mono);color:var(--inv);font-weight:500;margin-left:6px;}
.dl-side{display:flex;flex-direction:column;align-items:flex-start;}
@media screen and (min-width:1024px){
  .dl-side{align-items:flex-end;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--deep);
  color:var(--inv);
  padding:64px 0 0;
}
.site-footer h4{
  font-size:14px;
  letter-spacing:.1em;
  color:rgba(244,242,236,.6);
  font-weight:600;
  margin-bottom:16px;
}
.site-footer a{color:rgba(244,242,236,.82);font-size:14px;}
.site-footer a:hover{color:#fff;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-seal{border-color:rgba(244,242,236,.7);color:var(--inv);}
.footer-brand .brand-name{color:var(--inv);}
.footer-brand .brand-sub{color:rgba(244,242,236,.55);}
.footer-about p{font-size:14px;color:rgba(244,242,236,.68);line-height:1.8;margin:0 0 10px;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list li{line-height:1.6;}
.footer-meta{font-size:13.5px;color:rgba(244,242,236,.68);display:grid;gap:10px;}
.footer-meta b{font-family:var(--mono);color:var(--inv);font-weight:500;}
.footer-bottom{
  margin-top:52px;
  border-top:1px solid rgba(244,242,236,.14);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(244,242,236,.55);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .brand-meta{display:none;}
  .section{padding:72px 0;}
  .hero{padding:52px 0 64px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:15.5px;}
  .hero-visual{margin-top:40px;}
  .spec-card{margin-top:16px;margin-right:0;width:100%;}
  .value-grid{grid-template-columns:1fr;}
  .value-cell{border-left:0;border-top:1px solid var(--line);padding:24px 0;}
  .value-cell:first-child{border-top:0;padding-top:0;}
  .steps-wrap{grid-template-columns:1fr;}
  .step{padding:0 0 28px 0;}
  .step::after{
    top:36px;left:15px;right:auto;
    width:1px;height:calc(100% - 44px);
  }
  .req-grid{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .review-col:nth-child(2){margin-top:0;}
  .shot-card{flex:0 0 62%;}
  .dl-band{padding:56px 0;}
  .dl-side{margin-top:36px;}
}
@media screen and (max-width:639px){
  body{font-size:15px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  .brand-row{height:60px;gap:14px;}
  .brand-name{font-size:17px;}
  .brand-seal{width:26px;height:26px;font-size:14px;}
  .brand-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-row{mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 40px),transparent 100%);-webkit-mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 40px),transparent 100%);}
  .hero h1{font-size:27px;}
  .hero-cta .btn{width:100%;}
  .point-list{gap:18px;}
  .point-item{max-width:100%;}
  .shot-card{flex:0 0 82%;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .trust-row{gap:16px;}
  .dl-band h2{font-size:24px;}
  .dl-band .btn--primary{width:100%;min-width:0;}
  .dl-band .btn--ghost{width:100%;}
  .footer-bottom{flex-direction:column;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink:#1B2320;
  --ink-soft:#5C6A65;
  --green:#16453F;
  --green-soft:#E6EDE9;
  --green-deep:#0F1F1D;
  --orange:#D2603A;
  --orange-dark:#B94E2B;
  --moss:#C9A227;
  --paper:#F7F5F0;
  --sand:#EFEBE3;
  --white:#FFFFFF;
  --line:#DDD8CD;
  --line-soft:#E7E2D8;
  --success:#2E7D5B;
  --warn:#B4552F;
  --rev-text:#F4F2EC;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(15,31,29,.06);
  --sh-2:0 10px 26px -14px rgba(15,31,29,.22);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Menlo,Consolas,"DIN Alternate",monospace;
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:56px; --sp-6:72px; --sp-7:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:0;}
img{max-width:100%;display:block;}
a{color:var(--green);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--orange);}
button{font-family:inherit;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}
:focus-visible{outline:2px solid var(--green);outline-offset:2px;border-radius:4px;}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(120%) blur(2px);
}
.brand-row{
  display:flex;align-items:center;gap:24px;
  height:72px;
  transition:height .2s ease;
}
.site-header.is-scrolled .brand-row{height:56px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-seal{
  width:28px;height:28px;flex:0 0 28px;
  border:1.5px solid var(--green);border-radius:4px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;color:var(--green);background:var(--white);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--ink-soft);}
.brand-meta{
  margin-left:auto;display:flex;align-items:center;gap:20px;
  font-size:13px;color:var(--ink-soft);
}
.brand-meta b{color:var(--green);font-weight:600;}
.dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--success);margin-right:6px;vertical-align:middle;}
.brand-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:8px;
  background:var(--white);cursor:pointer;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:16px;height:1.5px;background:var(--ink);content:"";display:block;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

.channel-row{border-top:1px solid var(--line);background:rgba(247,245,240,.96);}
.channel-inner{
  display:flex;align-items:stretch;gap:28px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-inner a{
  position:relative;
  padding:14px 0;
  font-size:15px;color:var(--ink-soft);white-space:nowrap;
  border-bottom:3px solid transparent;
}
.channel-inner a:hover{color:var(--ink);}
.channel-inner a.is-active{color:var(--green);font-weight:600;border-bottom-color:var(--green);}
.channel-inner a.is-active:hover{color:var(--green);}

.mobile-panel{
  display:none;border-top:1px solid var(--line);background:var(--paper);
  padding:16px 0 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel ul{list-style:none;margin:0 0 16px;padding:0;}
.mobile-panel li + li{border-top:1px dashed var(--line);}
.mobile-panel li a{display:block;padding:13px 2px;font-size:15px;color:var(--ink);}
.mobile-panel li a.is-active{color:var(--green);font-weight:600;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2px;
  padding:0 22px;min-height:44px;
  border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1.25;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  text-align:center;
}
.btn--primary{background:var(--orange);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn--secondary{background:transparent;color:var(--green);border-color:var(--green);}
.btn--secondary:hover{background:var(--green-soft);color:var(--green);}
.btn--ghost{background:transparent;color:var(--green);border-color:var(--line);}
.btn--ghost:hover{border-color:var(--green);color:var(--green);background:var(--green-soft);}
.btn--sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn--block{width:100%;}
.btn--lg{min-height:52px;min-width:220px;}
.btn .btn-sub{font-size:12px;font-weight:400;opacity:.85;font-family:var(--font-num);}
.text-link{
  color:var(--green);font-weight:500;
  border-bottom:1px solid rgba(22,69,63,.35);
  padding-bottom:1px;
}
.text-link:hover{color:var(--orange);border-bottom-color:rgba(210,96,58,.5);}

/* ---------- breadcrumb / page head ---------- */
.page-wrap{padding:32px 0 72px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-soft);
  margin-bottom:24px;
}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--green);}
.breadcrumb .sep{color:#B9B2A4;}
.breadcrumb .current{color:var(--ink);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- article layout ---------- */
.article-layout{margin-top:0;}
.article-main{min-width:0;}
.article-head{
  border-bottom:1px solid var(--line);
  padding-bottom:24px;margin-bottom:28px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--green);
  border:1px solid var(--line);background:var(--sand);
  border-radius:999px;padding:4px 12px;margin-bottom:16px;
}
h1.article-title{
  font-size:42px;line-height:1.22;font-weight:700;letter-spacing:-.02em;
  color:var(--ink);margin-bottom:18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--ink-soft);
}
.article-meta .badge{
  display:inline-block;padding:3px 10px;border-radius:999px;
  border:1px solid var(--green);color:var(--green);
  font-size:12px;letter-spacing:.06em;background:var(--white);
}
.article-meta .sep{color:#B9B2A4;}
.article-meta time{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

.lede{
  border-left:3px solid var(--green);
  padding:2px 0 2px 16px;
  margin-bottom:32px;
  font-size:17px;line-height:1.85;color:#2C3633;
}

/* article body typography */
.article-body{font-size:16px;line-height:1.85;color:#1F2925;}
.article-body > * + *{margin-top:1.2em;}
.article-body h2{
  font-size:26px;line-height:1.35;font-weight:700;color:var(--ink);
  margin-top:40px;margin-bottom:16px;padding-left:14px;
  border-left:4px solid var(--green);
  scroll-margin-top:120px;
}
.article-body h3{
  font-size:20px;line-height:1.4;font-weight:600;color:var(--ink);
  margin-top:28px;margin-bottom:12px;
  scroll-margin-top:120px;
}
.article-body h4{
  font-size:17px;font-weight:600;color:var(--ink);margin-top:22px;margin-bottom:8px;
}
.article-body p{margin:0;}
.article-body p + p{margin-top:1.2em;}
.article-body ul,.article-body ol{
  margin-top:1em;margin-bottom:1em;padding-left:1.4em;
}
.article-body li{margin-bottom:.5em;line-height:1.8;}
.article-body li::marker{color:var(--green);}
.article-body blockquote{
  background:var(--sand);
  border-left:3px solid var(--green);
  border-radius:0 var(--r-img) var(--r-img) 0;
  padding:16px 20px;color:#2C3633;
  font-size:15.5px;
}
.article-body blockquote > * + *{margin-top:.8em;}
.article-body img{
  border-radius:var(--r-img);
  width:100%;height:auto;object-fit:cover;
  box-shadow:var(--sh-1);
}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;color:var(--ink-soft);text-align:center;margin-top:10px;
}
.article-body code{
  font-family:var(--font-num);font-size:14px;
  background:var(--sand);border-radius:4px;padding:2px 6px;
  color:#2C3633;
}
.article-body pre{
  background:var(--green-deep);color:var(--rev-text);
  border-radius:var(--r-img);padding:18px 20px;overflow-x:auto;
  font-family:var(--font-num);font-size:14px;line-height:1.7;
  border:1px solid rgba(244,242,236,.14);
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body a{color:var(--green);border-bottom:1px solid rgba(22,69,63,.35);}
.article-body a:hover{color:var(--orange);border-bottom-color:rgba(210,96,58,.5);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;}
.article-body th,.article-body td{
  border-bottom:1px dashed var(--line);padding:10px 12px;text-align:left;
}
.article-body th{background:var(--sand);font-weight:600;color:var(--green);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

/* empty state */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--white);
  padding:48px 24px;text-align:center;
}
.empty-state h2{font-size:22px;font-weight:600;margin-bottom:10px;}
.empty-state p{color:var(--ink-soft);font-size:15px;margin-bottom:20px;}

/* ---------- article footer blocks ---------- */
.post-actions{
  margin-top:56px;padding-top:32px;border-top:1px solid var(--line);
}
.section-title-sm{
  font-size:20px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;gap:10px;margin-bottom:20px;
}
.section-title-sm::before{content:"";width:6px;height:6px;background:var(--green);border-radius:2px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFC8B9;}
.rel-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--sand);}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rel-card:hover .thumb img{transform:scale(1.03);}
.rel-card .rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rel-card h3{font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.45;}
.rel-card p{font-size:13.5px;color:var(--ink-soft);line-height:1.65;}
.rel-card .rel-tag{
  margin-top:auto;font-size:12px;color:var(--green);
  letter-spacing:.06em;
}

.post-nav{
  margin-top:32px;display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.post-nav a{
  display:block;padding:16px 18px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.post-nav a:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--sh-2);}
.post-nav .nav-label{display:block;font-size:12px;color:var(--ink-soft);margin-bottom:6px;letter-spacing:.06em;}
.post-nav .nav-title{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;}
.post-nav .next{text-align:right;}

.back-row{margin-top:24px;font-size:14px;}

/* ---------- sidebar ---------- */
.article-side{min-width:0;}
.side-inner{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;
  box-shadow:var(--sh-1);
}
.side-card h2{
  font-size:14px;font-weight:600;color:var(--green);
  letter-spacing:.1em;margin-bottom:14px;
}
.toc-list{list-style:none;margin:0;padding:0;border-left:1px solid var(--line);}
.toc-list li{margin:0;}
.toc-list a{
  display:block;padding:7px 0 7px 14px;margin-left:-1px;
  font-size:14px;color:var(--ink-soft);line-height:1.55;
  border-left:2px solid transparent;
}
.toc-list a:hover{color:var(--green);}
.toc-list a.is-current{color:var(--green);font-weight:600;border-left-color:var(--green);}
.toc-empty{font-size:13.5px;color:var(--ink-soft);line-height:1.7;}

.dl-card{
  background:var(--green-deep);border:1px solid rgba(244,242,236,.14);
  border-radius:var(--r-card);padding:22px;color:var(--rev-text);
}
.dl-card h2{color:var(--rev-text);font-size:14px;letter-spacing:.1em;margin-bottom:10px;}
.dl-card p{font-size:13.5px;line-height:1.7;color:rgba(244,242,236,.78);margin-bottom:16px;}
.dl-card .btn{margin-bottom:12px;}
.dl-version{
  display:flex;justify-content:space-between;gap:8px;
  font-size:12.5px;color:rgba(244,242,236,.7);
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
}
.dl-version + .dl-version{margin-top:6px;padding-top:6px;border-top:1px solid rgba(244,242,236,.14);}

.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-cloud a{
  display:inline-block;padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--sand);
  font-size:13px;color:var(--ink);transition:all .18s ease;
}
.tag-cloud a:hover{border-color:var(--green);color:var(--green);background:var(--green-soft);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--green-deep);color:var(--rev-text);
  padding:64px 0 24px;margin-top:0;
}
.site-footer .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer .brand-seal{border-color:rgba(244,242,236,.6);color:var(--rev-text);background:transparent;}
.site-footer .brand-name{color:var(--rev-text);}
.site-footer .brand-sub{color:rgba(244,242,236,.6);}
.footer-about p{font-size:14px;line-height:1.8;color:rgba(244,242,236,.72);margin-bottom:10px;}
.site-footer h4{
  font-size:14px;font-weight:600;letter-spacing:.1em;color:var(--rev-text);
  margin-bottom:16px;
}
.footer-list{list-style:none;margin:0;padding:0;}
.footer-list li + li{margin-top:10px;}
.footer-list a{font-size:14px;color:rgba(244,242,236,.72);}
.footer-list a:hover{color:var(--moss);}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:rgba(244,242,236,.72);}
.footer-meta b{color:var(--rev-text);font-family:var(--font-num);font-weight:500;}
.footer-bottom{
  margin-top:48px;padding-top:20px;
  border-top:1px solid rgba(244,242,236,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(244,242,236,.6);
  font-variant-numeric:tabular-nums;
}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .brand-meta{display:none;}
  .article-side{margin-top:40px;}
  .side-inner{position:static;}
  h1.article-title{font-size:32px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
}
@media screen and (max-width:767px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .brand-row{height:60px;gap:12px;}
  .site-header.is-scrolled .brand-row{height:56px;}
  .brand-name{font-size:17px;}
  .nav-toggle{display:block;}
  .brand-actions .btn{display:none;}
  .channel-row .grid-container{position:relative;}
  .channel-inner{
    gap:22px;
    -webkit-mask-image:linear-gradient(to right,#000 88%,transparent 100%);
    mask-image:linear-gradient(to right,#000 88%,transparent 100%);
  }
  .page-wrap{padding:24px 0 56px;}
  h1.article-title{font-size:28px;line-height:1.3;}
  .lede{font-size:16px;}
  .article-body h2{font-size:22px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .rel-grid{grid-template-columns:1fr;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav .next{text-align:left;}
  .site-footer{padding:48px 0 20px;}
  .footer-bottom{flex-direction:column;}
}
@media screen and (max-width:519px){
  .article-meta{font-size:12.5px;gap:8px;}
  .side-card{padding:16px;}
  .dl-card{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink:#16453F;
  --ink-soft:#E6EDE9;
  --ink-deep:#0F1F1D;
  --orange:#D2603A;
  --orange-dark:#B8502E;
  --gold:#C9A227;
  --paper:#F7F5F0;
  --sand:#EFEBE3;
  --deep:#0F1F1D;
  --text:#1B2320;
  --muted:#5C6A65;
  --inverse:#F4F2EC;
  --line:#DDD8CD;
  --success:#2E7D5B;
  --warn:#B4552F;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(15,31,29,.06);
  --sh-2:0 10px 26px -14px rgba(15,31,29,.22);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-num:ui-monospace,"SF Mono","DIN Alternate",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:140px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--orange);}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-cn);
  color:var(--ink);
  font-weight:600;
  letter-spacing:-.01em;
  margin:0;
}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num,.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px;}

.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,240,.96);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid var(--line);
}
.brand-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .2s ease;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-seal{
  width:28px;height:28px;flex:0 0 28px;
  display:flex;align-items:center;justify-content:center;
  border:1.5px solid var(--ink);
  border-radius:4px;
  color:var(--ink);
  font-size:14px;font-weight:700;
  line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.04em;}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--muted);font-weight:500;}
.brand-meta{
  display:flex;align-items:center;gap:22px;
  font-size:13px;color:var(--muted);
  flex:1 1 auto;justify-content:center;
}
.brand-meta .dot{
  display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--success);margin-right:6px;vertical-align:middle;
}
.brand-meta b{color:var(--ink);font-weight:600;}
.brand-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

.nav-toggle{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line);
  background:transparent;
  border-radius:8px;
  position:relative;
  cursor:pointer;
  padding:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:16px;height:2px;background:var(--ink);border-radius:2px;
  content:"";
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:19px;}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) rotate(-45deg);top:0;}

.channel-row{border-top:1px solid rgba(221,216,205,.6);}
.channel-inner{
  display:flex;align-items:center;gap:28px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  white-space:nowrap;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-inner a{
  position:relative;
  display:inline-block;
  padding:13px 0 15px;
  font-size:15px;
  color:var(--muted);
  font-weight:500;
}
.channel-inner a:hover{color:var(--ink);}
.channel-inner a.is-active{color:var(--ink);font-weight:600;}
.channel-inner a.is-active::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;
  height:3px;background:var(--ink);border-radius:2px 2px 0 0;
}

.mobile-panel{display:none;background:var(--paper);border-top:1px solid var(--line);padding:8px 0 20px;}
.mobile-panel.is-open{display:block;}
.mobile-panel ul{margin:0 0 16px;}
.mobile-panel li a{
  display:block;padding:12px 0;
  border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--text);
}
.mobile-panel li a.is-active{color:var(--ink);font-weight:600;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border:1.5px solid transparent;
  border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--orange);color:#fff;border-color:var(--orange);}
.btn--primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn--ghost:hover{background:var(--ink-soft);color:var(--ink);transform:translateY(-1px);}
.btn--ghost:active{transform:translateY(0);}
.btn--light{background:transparent;color:var(--inverse);border-color:rgba(244,242,236,.45);}
.btn--light:hover{background:rgba(244,242,236,.1);color:var(--inverse);border-color:rgba(244,242,236,.8);}
.btn--sm{height:38px;font-size:14px;padding:0 16px;}
.btn--block{display:flex;width:100%;}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

.text-link{
  font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  text-underline-offset:3px;
}
.text-link:hover{color:var(--orange);border-color:var(--orange);}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  overflow:hidden;
  padding:36px 0 40px;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:"";
  position:absolute;right:-70px;top:-80px;
  width:340px;height:340px;border-radius:50%;
  background:repeating-radial-gradient(circle,rgba(22,69,63,.055) 0 1px,transparent 1px 15px);
  pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--text);}
.page-head h1{
  font-size:42px;
  line-height:1.22;
  letter-spacing:-.02em;
  font-weight:700;
  margin:0 0 16px;
  max-width:900px;
}
.page-lead{
  font-size:17px;
  line-height:1.8;
  color:var(--muted);
  max-width:760px;
  margin:0 0 26px;
}
.anchor-tags{display:flex;flex-wrap:wrap;gap:10px;}
.anchor-tags a{
  display:inline-block;
  padding:6px 15px;
  font-size:13px;
  color:var(--muted);
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--paper);
}
.anchor-tags a:hover{color:var(--ink);border-color:var(--ink);background:var(--ink-soft);}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0;}
.section--sand{background:var(--sand);}
.section--tight{padding:64px 0;}
.section-head{margin-bottom:32px;max-width:800px;}
.kicker{
  display:inline-block;
  font-size:12px;letter-spacing:.16em;font-weight:600;
  color:var(--muted);
  margin-bottom:12px;
}
.section-head h2{
  font-size:30px;line-height:1.28;letter-spacing:-.01em;
  margin:0 0 12px;
}
.section-desc{font-size:16px;line-height:1.8;color:var(--muted);margin:0;}

/* ---------- 步骤时间轴 ---------- */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:20px;
}
.timeline::before{
  content:"";
  position:absolute;
  top:13px;left:14px;
  width:calc(80% + 16px);
  height:1px;
  background:var(--line);
}
.step{position:relative;padding-top:56px;}
.step-num{
  position:absolute;top:0;left:0;z-index:2;
  width:28px;height:28px;
  display:flex;align-items:center;justify-content:center;
  border:1.5px solid var(--ink);
  border-radius:6px;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-num);
  font-size:12px;
  font-weight:600;
}
.step h3{
  font-size:19px;line-height:1.4;font-weight:600;
  margin:0 0 10px;
}
.step p{
  font-size:14.5px;line-height:1.8;color:var(--muted);
  margin:0 0 12px;
}
.step .note{
  font-size:13px;line-height:1.7;color:var(--warn);
  margin:0;
  padding-top:10px;
  border-top:1px dashed var(--line);
}
.step .note::before{
  content:"注意";
  display:inline-block;
  font-size:11px;letter-spacing:.08em;
  border:1px solid rgba(180,85,47,.4);
  border-radius:999px;
  padding:0 6px;
  margin-right:6px;
  vertical-align:1px;
}

/* ---------- 准备事项 ---------- */
.prep-grid{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:44px;
  align-items:center;
}
.prep-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.prep-body h2{font-size:30px;line-height:1.28;margin:0 0 12px;}
.prep-body > p{color:var(--muted);font-size:16px;margin:0 0 24px;}
.req-list{border-top:1px solid var(--line);}
.req-list li{
  display:flex;
  gap:16px;
  padding:14px 0;
  border-bottom:1px dashed var(--line);
  font-size:14.5px;
  line-height:1.75;
}
.req-key{
  flex:0 0 34%;
  color:var(--muted);
}
.req-val{flex:1 1 auto;color:var(--text);}
.req-val .num{color:var(--ink);font-weight:600;}

/* ---------- 常见卡点 ---------- */
.pitfall-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.pitfall-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px 24px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pitfall-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFC8BA;}
.pitfall-index{
  display:inline-block;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--muted);
  margin-bottom:14px;
}
.pitfall-card h3{font-size:18px;line-height:1.45;margin:0 0 10px;}
.pitfall-card p{font-size:14.5px;line-height:1.8;color:var(--muted);margin:0 0 14px;}
.pitfall-card .fix{
  font-size:13.5px;line-height:1.75;color:var(--ink);
  padding-top:12px;
  border-top:1px dashed var(--line);
  margin:0;
}

/* ---------- 相关分类 ---------- */
.related-block{padding:56px 0 0;}
.related-title{
  font-size:13px;letter-spacing:.1em;color:var(--muted);
  margin:0 0 18px;font-weight:600;
}
.related-pills{display:flex;flex-wrap:wrap;gap:12px;}
.related-pills a{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;
  font-size:14px;font-weight:500;
  color:var(--ink);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color .18s ease,background-color .18s ease,transform .18s ease;
}
.related-pills a:hover{border-color:var(--ink);background:var(--ink-soft);transform:translateY(-1px);color:var(--ink);}
.related-pills .arrow{font-family:var(--font-num);font-size:12px;color:var(--muted);}

/* ---------- 深色 CTA 条 ---------- */
.cta-bar{
  margin:56px 0 76px;
  background:var(--deep);
  border:1px solid rgba(244,242,236,.14);
  border-radius:var(--r-card);
  padding:34px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  color:var(--inverse);
}
.cta-bar h2{
  color:var(--inverse);
  font-size:24px;
  line-height:1.4;
  margin:0 0 8px;
}
.cta-bar p{
  color:rgba(244,242,236,.66);
  font-size:14.5px;
  line-height:1.75;
  margin:0;
}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:var(--inverse);padding:64px 0 0;}
.site-footer .grid-container{color:var(--inverse);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.site-footer .brand-seal{border-color:rgba(244,242,236,.45);color:var(--inverse);}
.site-footer .brand-name{color:var(--inverse);}
.site-footer .brand-sub{color:rgba(244,242,236,.58);}
.footer-about p{
  font-size:13.5px;line-height:1.85;
  color:rgba(244,242,236,.66);
  margin:0 0 12px;
}
.site-footer h4{
  font-size:14px;font-weight:600;letter-spacing:.06em;
  color:var(--inverse);
  margin:0 0 18px;
}
.footer-list{margin:0;padding:0;list-style:none;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:13.5px;color:rgba(244,242,236,.66);}
.footer-list a:hover{color:var(--inverse);}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:rgba(244,242,236,.66);}
.footer-meta b{color:var(--inverse);font-weight:600;}
.footer-bottom{
  margin-top:48px;
  padding:20px 0 30px;
  border-top:1px solid rgba(244,242,236,.14);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:14px;
  font-size:13px;
  color:rgba(244,242,236,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .grid-container{max-width:100%;}
}

@media (max-width:1023px){
  .brand-meta{display:none;}
  .brand-row{height:64px;}
  .page-head h1{font-size:34px;}
  .page-lead{font-size:16px;}
  .section{padding:64px 0;}
  .section-head h2,.prep-body h2{font-size:26px;}
  .timeline{grid-template-columns:repeat(2,1fr);gap:32px 20px;}
  .timeline::before{display:none;}
  .step{padding-top:48px;}
  .prep-grid{grid-template-columns:1fr;gap:32px;}
  .pitfall-grid{grid-template-columns:1fr;gap:16px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:30px 28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

@media (max-width:767px){
  .nav-toggle{display:block;}
  .brand-row{height:60px;gap:12px;}
  .brand-actions .btn{display:none;}
  .brand-name{font-size:16px;}
  .brand-sub{font-size:10px;letter-spacing:.12em;}
  .channel-inner{gap:22px;
    -webkit-mask-image:linear-gradient(to right,#000 88%,transparent 100%);
    mask-image:linear-gradient(to right,#000 88%,transparent 100%);
  }
  .channel-inner a{font-size:14px;}
  .page-head{padding:28px 0 32px;}
  .page-head h1{font-size:28px;}
  .page-lead{font-size:15px;margin-bottom:20px;}
  .section{padding:52px 0;}
  .section-head h2,.prep-body h2{font-size:22px;}
  .timeline{grid-template-columns:1fr;gap:28px;}
  .step-num{width:26px;height:26px;font-size:11px;}
  .step{padding-top:44px;}
  .step h3{font-size:18px;}
  .req-list li{flex-direction:column;gap:4px;}
  .req-key{flex:none;}
  .cta-bar{padding:26px 22px;margin:44px 0 60px;}
  .cta-bar h2{font-size:20px;}
  .cta-actions .btn{width:100%;flex:1 1 100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .site-footer{padding-top:48px;}
}

@media (max-width:519px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .page-head h1{font-size:26px;}
  .anchor-tags a{font-size:12px;padding:5px 12px;}
  .related-pills a{font-size:13px;padding:9px 16px;}
}

@media (min-width:1024px){
  .mobile-panel{display:none !important;}
  .nav-toggle{display:none;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category2 */
:root{
  --ink:#1B2320;
  --green:#16453F;
  --green-soft:#E6EDE9;
  --terracotta:#D2603A;
  --terracotta-dark:#B94F2C;
  --moss:#C9A227;
  --paper:#F7F5F0;
  --sand:#EFEBE3;
  --deep:#0F1F1D;
  --muted:#5C6A65;
  --reverse:#F4F2EC;
  --line:#DDD8CD;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(15,31,29,.06);
  --shadow-2:0 10px 26px -14px rgba(15,31,29,.22);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-num:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
  --h1:42px;
  --h2:30px;
  --h3:21px;
  --body:16px;
  --meta:13.5px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:var(--body);
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:600;line-height:1.3;color:var(--ink);letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--green);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--terracotta)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:0}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px}
[id]{scroll-margin-top:132px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1.5px solid transparent;border-radius:var(--radius-sm);
  font-size:16px;font-weight:600;line-height:1.2;
  padding:12px 22px;cursor:pointer;text-decoration:none;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  box-shadow:var(--shadow-1);
}
.btn--primary{background:var(--terracotta);color:#fff}
.btn--primary:hover{background:var(--terracotta-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn--ghost{background:transparent;border-color:var(--green);color:var(--green);box-shadow:none}
.btn--ghost:hover{background:var(--green-soft);color:var(--green);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(0)}
.btn--sm{font-size:14px;padding:9px 16px}
.btn--block{display:flex;width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(247,245,240,.96);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height .22s ease}
.site-header.is-stuck .brand-row{height:56px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand-seal{
  width:28px;height:28px;flex:0 0 28px;
  display:grid;place-items:center;
  border:1.5px solid var(--green);border-radius:4px;
  color:var(--green);font-size:15px;font-weight:700;line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand-sub{font-size:11px;letter-spacing:.18em;color:var(--muted);margin-top:3px}
.brand-meta{flex:1 1 auto;display:flex;align-items:center;justify-content:center;gap:22px;font-size:13px;color:var(--muted)}
.brand-meta b{color:var(--green);font-weight:600}
.brand-meta .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--moss);margin-right:6px;vertical-align:middle}
.brand-actions{flex:0 0 auto;display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;position:relative;width:42px;height:42px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:transparent;cursor:pointer;
}
.nav-toggle span{position:absolute;left:50%;top:50%;width:18px;height:1.6px;margin:-0.8px 0 0 -9px;background:var(--ink);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--ink);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.channel-row{position:relative;border-top:1px solid rgba(221,216,205,.7)}
.channel-inner{display:flex;align-items:center;gap:28px;height:48px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.channel-inner::-webkit-scrollbar{display:none}
.channel-inner a{
  flex:0 0 auto;font-size:14.5px;color:var(--muted);
  padding:13px 0;border-bottom:3px solid transparent;text-decoration:none;
}
.channel-inner a:hover{color:var(--ink)}
.channel-inner a.is-active{color:var(--ink);font-weight:600;border-bottom-color:var(--green)}
.channel-row::after{
  content:"";position:absolute;top:0;right:0;width:56px;height:100%;
  background:linear-gradient(90deg,rgba(247,245,240,0),rgba(247,245,240,.98));
  pointer-events:none;
}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--paper);padding:14px 0 20px}
.mobile-panel.is-open{display:block}
.mobile-panel ul{margin:0 0 14px;padding:0}
.mobile-panel li a{display:block;padding:11px 0;font-size:15px;color:var(--ink);border-bottom:1px solid rgba(221,216,205,.6)}
.mobile-panel li a.is-active{color:var(--green);font-weight:600}

/* ---------- 页头 ---------- */
.page-head{position:relative;overflow:hidden;padding:42px 0 38px;border-bottom:1px solid var(--line);background:var(--paper)}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.14;
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,var(--paper) 6%,rgba(247,245,240,.78) 58%,rgba(247,245,240,.3) 100%);
}
.page-head .grid-container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted);border-bottom:1px solid transparent;padding-bottom:1px}
.breadcrumb a:hover{color:var(--green);border-bottom-color:var(--green)}
.breadcrumb .sep{color:#B9B3A6}
.breadcrumb .current{color:var(--ink)}
.page-head h1{font-size:var(--h1);line-height:1.22;letter-spacing:-.02em;font-weight:700;max-width:940px;margin:0 0 16px}
.lede{font-size:16.5px;line-height:1.8;color:var(--muted);max-width:780px;margin:0 0 24px}
.anchor-tags{display:flex;flex-wrap:wrap;gap:10px}
.anchor-tags a{
  display:inline-block;padding:7px 15px;font-size:12.5px;letter-spacing:.05em;
  border:1px solid var(--line);border-radius:999px;
  background:rgba(255,255,255,.66);color:var(--green);text-decoration:none;
}
.anchor-tags a:hover{background:var(--green-soft);border-color:var(--green);color:var(--green);transform:translateY(-1px)}

/* ---------- 板块 ---------- */
.section{padding:72px 0}
.section--sand{background:var(--sand)}
.section--tight{padding:56px 0}
.section-head{max-width:780px;margin-bottom:36px}
.section-head h2{font-size:var(--h2);line-height:1.3;letter-spacing:-.02em;margin-bottom:12px}
.section-head p{margin:0;font-size:15.5px;line-height:1.8;color:var(--muted)}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--green);
  background:var(--green-soft);border-radius:999px;padding:5px 12px;margin-bottom:14px;
}

/* ---------- 交替图文 ---------- */
.split-list{display:grid;gap:56px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split--rev .split-media{order:2}
.split-media{position:relative}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:12px;border:1px solid var(--line);
  background:var(--sand);box-shadow:var(--shadow-2);
}
.media-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(247,245,240,.95);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;
  font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--green);
}
.split-body h3{font-size:var(--h3);margin-bottom:12px;line-height:1.35}
.split-body p{font-size:var(--body);line-height:1.85;color:var(--muted);margin-bottom:18px}
.check-list{display:grid;gap:10px}
.check-list li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.75;color:var(--ink)}
.check-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--green);opacity:.85}

/* ---------- 编号条 ---------- */
.steps-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step{padding:28px 26px;border-left:1px solid var(--line)}
.step:first-child{border-left:0;padding-left:0}
.step-num{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;letter-spacing:.12em;color:var(--terracotta);margin-bottom:10px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;line-height:1.75;color:var(--muted);margin:0}

/* ---------- 下载区 ---------- */
.download-wrap{
  background:var(--deep);color:var(--reverse);
  border-radius:var(--radius-lg);border:1px solid rgba(244,242,236,.14);
  padding:44px;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;
}
.download-copy h2{font-size:var(--h2);color:var(--reverse);margin-bottom:14px;letter-spacing:-.02em}
.download-copy p{color:rgba(244,242,236,.72);font-size:15.5px;line-height:1.8;margin-bottom:26px;max-width:430px}
.download-actions{display:flex;flex-wrap:wrap;align-items:stretch;gap:12px}
.btn--download{
  flex-direction:column;align-items:flex-start;justify-content:center;gap:2px;
  min-width:236px;height:52px;padding:0 22px;text-align:left;
}
.btn-line1{font-size:16px;font-weight:600;line-height:1.2}
.btn-line2{font-size:12px;font-weight:400;opacity:.88;font-family:var(--font-num);letter-spacing:.02em}
.btn--outline-inverse{
  height:46px;padding:0 20px;background:transparent;box-shadow:none;
  border:1.5px solid rgba(244,242,236,.42);color:var(--reverse);font-size:15px;
}
.btn--outline-inverse:hover{background:rgba(244,242,236,.1);border-color:rgba(244,242,236,.72);color:var(--reverse);transform:translateY(-1px)}
.download-wrap :focus-visible{outline-color:var(--reverse)}
.version-list{margin:0;border-top:1px dashed rgba(244,242,236,.2)}
.version-list > div{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed rgba(244,242,236,.2)}
.version-list dt{font-size:var(--meta);color:rgba(244,242,236,.62);margin:0}
.version-list dd{margin:0;font-size:14.5px;color:var(--reverse);font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- 问答 ---------- */
.qa-grid{display:grid;gap:16px}
.qa-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,border-color .18s ease,transform .18s ease;
}
.qa-item:hover{border-color:#C8C2B4;box-shadow:var(--shadow-2);transform:translateY(-2px)}
.qa-item h3{font-size:17px;font-weight:600;margin-bottom:10px;line-height:1.5}
.qa-item p{margin:0;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- 相关分类 & 底部 CTA ---------- */
.related-block{padding-top:56px;padding-bottom:72px}
.related-title{font-size:14px;letter-spacing:.12em;color:var(--muted);margin-bottom:16px}
.related{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper);font-size:14px;color:var(--green);
  transition:background-color .18s ease,border-color .18s ease,transform .18s ease;
}
.pill:hover{background:var(--green-soft);border-color:var(--green);color:var(--green);transform:translateY(-1px)}
.cta-band{
  background:var(--deep);color:var(--reverse);
  border-radius:16px;border:1px solid rgba(244,242,236,.14);
  padding:32px 40px;min-height:140px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:24px;color:var(--reverse);margin-bottom:8px}
.cta-band p{margin:0;font-size:14.5px;line-height:1.75;color:rgba(244,242,236,.72);max-width:620px}
.cta-band .btn{flex:0 0 auto}
.cta-band :focus-visible{outline-color:var(--reverse)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:var(--reverse);padding:64px 0 28px;margin-top:0}
.site-footer h4{font-size:13px;letter-spacing:.12em;color:rgba(244,242,236,.55);margin-bottom:14px;font-weight:600}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.site-footer .brand-seal{border-color:rgba(244,242,236,.55);color:var(--reverse)}
.site-footer .brand-name{color:var(--reverse)}
.site-footer .brand-sub{color:rgba(244,242,236,.6)}
.footer-about p{font-size:14px;line-height:1.85;color:rgba(244,242,236,.72);margin-bottom:10px}
.footer-list{display:grid;gap:2px}
.footer-list a{display:inline-block;padding:5px 0;font-size:14px;color:rgba(244,242,236,.72);border-bottom:1px solid transparent}
.footer-list a:hover{color:var(--reverse);border-bottom-color:rgba(244,242,236,.5)}
.footer-meta{display:grid;gap:8px}
.footer-meta span{font-size:13.5px;color:rgba(244,242,236,.72)}
.footer-meta b{color:var(--reverse);font-family:var(--font-num);font-variant-numeric:tabular-nums;font-weight:600}
.footer-bottom{
  margin-top:48px;padding-top:20px;
  border-top:1px solid rgba(244,242,236,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(244,242,236,.55);
}
.site-footer .grid-x > .cell{margin-bottom:28px}

@media screen and (max-width:1023px){
  .brand-meta{display:none}
  .nav-toggle{display:block}
  .split{grid-template-columns:1fr;gap:26px}
  .split--rev .split-media{order:0}
  .split-list{gap:44px}
  .download-wrap{grid-template-columns:1fr;padding:32px;gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 26px;min-height:0}
  .section{padding:60px 0}
  .steps-strip{grid-template-columns:1fr}
  .step{border-left:0;border-top:1px solid var(--line);padding:22px 0}
  .step:first-child{border-top:0;padding-top:0}
}
@media screen and (min-width:1024px){
  .mobile-panel{display:none !important}
}
@media screen and (max-width:640px){
  :root{--h1:28px;--h2:22px;--h3:18px;--body:15px;--meta:12.5px}
  .grid-container{padding-left:18px;padding-right:18px}
  .brand-name{font-size:17px}
  .brand-sub{font-size:10.5px;letter-spacing:.14em}
  .brand-row{height:60px;gap:12px}
  .site-header.is-stuck .brand-row{height:56px}
  .btn--sm{font-size:13.5px;padding:8px 13px}
  .page-head{padding:28px 0 26px}
  .lede{font-size:15px}
  .section{padding:48px 0}
  .section-head{margin-bottom:26px}
  .download-wrap{padding:24px 20px;border-radius:14px}
  .download-actions{flex-direction:column}
  .btn--download{width:100%;min-width:0}
  .btn--outline-inverse{width:100%}
  .cta-band h2{font-size:20px}
  .cta-band .btn{width:100%}
  .qa-item{padding:18px}
  .related-block{padding-top:44px;padding-bottom:52px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
}

/* roulang page: category3 */
:root{
  --pine:#16453F;
  --pine-deep:#0F1F1D;
  --clay:#D2603A;
  --clay-dark:#B94F2C;
  --moss:#C9A227;
  --paper:#F7F5F0;
  --sand:#EFEBE3;
  --ink:#1B2320;
  --muted:#5C6A65;
  --line:#DDD8CD;
  --white:#F4F2EC;
  --success:#2E7D5B;
  --warn:#B4552F;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(15,31,29,.06);
  --sh-2:0 10px 26px -14px rgba(15,31,29,.22);
  --gap-section:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--pine);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--clay);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:0;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-btn);
  font-weight:600;
  font-size:16px;
  line-height:1.4;
  padding:13px 22px;
  border:1.5px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  text-align:center;
}
.btn--primary{background:var(--clay);color:#fff;border-color:var(--clay);box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--clay-dark);border-color:var(--clay-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn--ghost{background:transparent;color:var(--pine);border-color:var(--pine);}
.btn--ghost:hover{background:#E6EDE9;color:var(--pine);border-color:var(--pine);transform:translateY(-1px);}
.btn--ghost:active{transform:translateY(0);}
.btn--light{background:transparent;color:var(--white);border-color:rgba(244,242,236,.42);}
.btn--light:hover{background:rgba(244,242,236,.1);color:#fff;border-color:rgba(244,242,236,.7);}
.btn--sm{font-size:14px;padding:9px 16px;border-radius:8px;}
.btn--block{display:flex;width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

.link-more{
  font-size:14px;
  font-weight:600;
  color:var(--pine);
  border-bottom:1px solid currentColor;
  padding-bottom:3px;
}
.link-more:hover{color:var(--clay);}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,240,.97);
  border-bottom:1px solid var(--line);
}
.brand-row{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
  transition:min-height .2s ease;
}
.site-header.is-scrolled .brand-row{min-height:56px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--pine);
}
.brand:hover{color:var(--pine);}
.brand-seal{
  width:28px;
  height:28px;
  flex:0 0 28px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1.5px solid var(--pine);
  border-radius:4px;
  font-size:15px;
  font-weight:700;
  line-height:1;
  color:var(--pine);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--pine);}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--muted);font-weight:500;}
.brand-meta{
  display:flex;
  align-items:center;
  gap:22px;
  font-size:13px;
  color:var(--muted);
  margin-left:8px;
}
.brand-meta .dot{
  display:inline-block;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--success);
  margin-right:6px;
  vertical-align:1px;
}
.brand-meta b{color:var(--pine);font-weight:600;}
.brand-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:10px;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;height:1.6px;
  background:var(--pine);
  border-radius:2px;
  transform:translateX(-50%);
  content:"";
}
.nav-toggle span{top:50%;margin-top:-0.8px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:translateX(-50%) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:translateX(-50%) rotate(-45deg);}

.channel-row{position:relative;border-bottom:0;}
.channel-inner{
  display:flex;
  align-items:stretch;
  gap:28px;
  height:52px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-inner a{
  display:inline-flex;
  align-items:center;
  white-space:nowrap;
  font-size:15px;
  color:var(--muted);
  border-bottom:3px solid transparent;
  padding-bottom:1px;
  transition:color .18s ease,border-color .18s ease;
}
.channel-inner a:hover{color:var(--pine);}
.channel-inner a.is-active{
  color:var(--pine);
  font-weight:600;
  border-bottom-color:var(--pine);
}

.mobile-panel{
  display:none;
  background:var(--sand);
  border-top:1px solid var(--line);
  padding:14px 0 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel ul{display:flex;flex-direction:column;}
.mobile-panel ul li a{
  display:block;
  padding:12px 2px;
  font-size:15px;
  color:var(--ink);
  border-bottom:1px dashed var(--line);
}
.mobile-panel ul li a.is-active{color:var(--pine);font-weight:600;}
.mobile-panel .btn{margin-top:16px;}

/* ---------- 页头 ---------- */
.page-head{
  padding:44px 0 52px;
  background-color:var(--paper);
  background-image:repeating-radial-gradient(circle at 88% 10%, rgba(22,69,63,.055) 0 1px, transparent 1px 34px);
  border-bottom:1px solid var(--line);
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--clay);}
.crumbs .sep{color:#B9B2A5;}
.crumbs .current{color:var(--ink);}
.page-head h1{
  font-size:42px;
  line-height:1.22;
  letter-spacing:-.02em;
  font-weight:700;
  color:var(--pine);
  max-width:22ch;
}
.page-head .lead{
  margin-top:18px;
  font-size:16.5px;
  color:var(--muted);
  max-width:70ch;
  border-left:3px solid var(--pine);
  padding-left:16px;
}
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.chip{
  display:inline-flex;
  align-items:center;
  font-size:12.5px;
  letter-spacing:.04em;
  padding:6px 13px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--sand);
  color:var(--pine);
  font-weight:500;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.chip:hover{background:#fff;border-color:var(--pine);color:var(--pine);}
.chip--mark{background:#fff;border-color:var(--pine);}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section--tight{padding:56px 0;}
.section--sand{background:var(--sand);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:30px;
  line-height:1.25;
  letter-spacing:-.02em;
  font-weight:700;
  color:var(--pine);
}
.section-head .sub{
  margin-top:10px;
  font-size:14.5px;
  color:var(--muted);
  max-width:64ch;
}

/* ---------- 功能卡 2×2 ---------- */
.fcards{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.fcard{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 28px 26px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.fcard:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFC8BA;}
.fcard .idx{
  display:inline-block;
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--clay);
  font-weight:600;
  margin-bottom:10px;
}
.fcard h3{
  font-size:21px;
  line-height:1.35;
  font-weight:600;
  color:var(--pine);
  margin-bottom:10px;
}
.fcard .def{
  font-size:15px;
  color:var(--muted);
  line-height:1.75;
  padding-bottom:16px;
  border-bottom:1px dashed var(--line);
}
.fcard ul{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.fcard ul li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  line-height:1.7;
  color:var(--ink);
}
.fcard ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  width:8px;
  height:1.5px;
  background:var(--pine);
  border-radius:2px;
}
.fcard ul li b{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:600;color:var(--pine);}

/* ---------- 截图画廊 ---------- */
.gallery-wrap{position:relative;}
.gallery{
  display:flex;
  gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:10px;
  scrollbar-width:thin;
  scrollbar-color:#CFC8BA transparent;
}
.gallery::-webkit-scrollbar{height:6px;}
.gallery::-webkit-scrollbar-thumb{background:#CFC8BA;border-radius:999px;}
.gcard{
  flex:0 0 calc(50% - 8px);
  scroll-snap-align:start;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.gcard:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.gcard figure{margin:0;aspect-ratio:16/10;background:var(--sand);overflow:hidden;}
.gcard figure img{width:100%;height:100%;object-fit:cover;}
.gcard .gbody{padding:18px 20px 22px;}
.gcard h3{
  font-size:17px;
  font-weight:600;
  color:var(--pine);
  line-height:1.4;
  margin-bottom:8px;
}
.gcard p{font-size:14px;line-height:1.7;color:var(--muted);}
.gallery-nav{
  display:flex;
  align-items:center;
  gap:10px;
}
.gbtn{
  width:40px;height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--pine);
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.gbtn:hover{background:var(--pine);border-color:var(--pine);color:#fff;}
.gbtn svg{width:16px;height:16px;}

/* ---------- 图文区块 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:52px;
  align-items:center;
}
.split .media{
  aspect-ratio:4/3;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--sand);
  box-shadow:var(--sh-1);
  border:1px solid var(--line);
}
.split .media img{width:100%;height:100%;object-fit:cover;}
.split h2{
  font-size:30px;
  line-height:1.25;
  letter-spacing:-.02em;
  color:var(--pine);
  font-weight:700;
  margin-bottom:16px;
}
.split p{font-size:15.5px;line-height:1.85;color:var(--muted);margin-bottom:20px;}
.point-list{display:flex;flex-direction:column;gap:14px;margin-bottom:26px;}
.point-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  line-height:1.75;
  color:var(--ink);
}
.point-list li .n{
  flex:0 0 26px;
  width:26px;height:26px;
  margin-top:3px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1.5px solid var(--pine);
  border-radius:7px;
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  font-weight:600;
  color:var(--pine);
}
.point-list li span b{font-weight:600;color:var(--pine);}

/* ---------- 核对清单 ---------- */
.checklist{border-top:1px solid var(--line);}
.checklist li{
  display:grid;
  grid-template-columns:200px 1fr 132px;
  gap:20px;
  align-items:center;
  padding:20px 4px;
  border-bottom:1px dashed var(--line);
  transition:background-color .18s ease;
}
.checklist li:hover{background:rgba(255,255,255,.7);}
.checklist .cname{
  font-size:15.5px;
  font-weight:600;
  color:var(--pine);
}
.checklist .cdesc{font-size:14.5px;line-height:1.7;color:var(--muted);}
.checklist .ctag{justify-self:end;}
.tag{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  letter-spacing:.08em;
  padding:4px 11px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--sand);
  color:var(--pine);
  white-space:nowrap;
}
.tag--mark{background:#fff;border-color:var(--pine);}

/* ---------- 相关分类 + CTA ---------- */
.related{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-bottom:36px;
}
.related .label{font-size:14px;color:var(--muted);margin-right:4px;}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:500;
  padding:9px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--pine);
  transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
}
.pill:hover{background:var(--pine);border-color:var(--pine);color:#fff;transform:translateY(-1px);}

.cta-band{
  background:var(--pine-deep);
  color:var(--white);
  border-radius:16px;
  padding:34px 40px;
  min-height:140px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  border:1px solid rgba(244,242,236,.14);
}
.cta-band h2{
  font-size:26px;
  line-height:1.3;
  color:var(--white);
  font-weight:700;
  letter-spacing:-.01em;
}
.cta-band p{
  font-size:14.5px;
  color:rgba(244,242,236,.76);
  margin-top:8px;
  max-width:56ch;
}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--pine-deep);
  color:rgba(244,242,236,.78);
  padding:64px 0 28px;
  margin-top:96px;
}
.site-footer .grid-x{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:36px 32px;
  margin:0;
}
.site-footer .grid-x > .cell{width:auto;padding:0;min-width:0;}
.footer-about{grid-column:span 4;}
.site-footer .large-2{grid-column:span 2;}
.site-footer .large-3{grid-column:span 3;}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.site-footer .brand-seal{border-color:rgba(244,242,236,.6);color:var(--white);}
.site-footer .brand-name{color:var(--white);}
.site-footer .brand-sub{color:rgba(244,242,236,.6);}
.footer-about p{
  font-size:14px;
  line-height:1.85;
  color:rgba(244,242,236,.68);
  margin-bottom:10px;
}
.site-footer h4{
  font-size:14px;
  font-weight:600;
  color:var(--white);
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{
  font-size:14px;
  color:rgba(244,242,236,.72);
}
.footer-list a:hover{color:#fff;}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(244,242,236,.72);}
.footer-meta b{color:var(--white);font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:500;}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(244,242,236,.14);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(244,242,236,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .brand-meta{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .channel-row::after{
    content:"";
    position:absolute;
    right:0;top:0;bottom:0;
    width:42px;
    pointer-events:none;
    background:linear-gradient(90deg,rgba(247,245,240,0),var(--paper));
  }
  .site-header .btn--sm{display:none;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split .media{order:-1;}
  .gcard{flex:0 0 calc(66% - 8px);}
  .checklist li{grid-template-columns:170px 1fr;grid-template-areas:"name tag" "desc desc";gap:8px 16px;}
  .checklist .cname{grid-area:name;}
  .checklist .ctag{grid-area:tag;}
  .checklist .cdesc{grid-area:desc;}
  .cta-band{flex-direction:column;align-items:flex-start;gap:22px;padding:30px 28px;}
  .site-footer .large-2{grid-column:span 6;}
  .site-footer .large-3{grid-column:span 6;}
  .footer-about{grid-column:span 12;}
  .section{padding:56px 0;}
  .page-head h1{font-size:32px;max-width:none;}
  .section-head h2,.split h2{font-size:24px;}
}

@media (max-width:767px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .brand-row{min-height:60px;gap:16px;}
  .site-header.is-scrolled .brand-row{min-height:56px;}
  .brand-name{font-size:16px;}
  .brand-sub{font-size:10px;letter-spacing:.12em;}
  .brand-seal{width:26px;height:26px;flex:0 0 26px;font-size:14px;}
  .fcards{grid-template-columns:1fr;gap:20px;}
  .gcard{flex:0 0 82%;}
  .page-head{padding:32px 0 40px;}
  .page-head h1{font-size:28px;}
  .page-head .lead{font-size:15px;padding-left:14px;}
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2,.split h2{font-size:22px;}
  .cta-band h2{font-size:21px;}
  .site-footer{padding-top:48px;margin-top:72px;}
  .site-footer .grid-x > .cell{grid-column:span 12 !important;}
  .footer-bottom{flex-direction:column;}
}

@media (max-width:519px){
  .checklist li{grid-template-columns:1fr;grid-template-areas:"name" "desc" "tag";gap:6px;}
  .checklist .ctag{justify-self:start;margin-top:6px;}
  .gcard{flex:0 0 88%;}
  .cta-band{padding:26px 22px;}
  .related{gap:10px;}
  .pill{padding:8px 15px;font-size:13.5px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition:none !important;animation:none !important;}
}

/* roulang page: category4 */
:root{
  --ink:#16453F;
  --ink-deep:#0F1F1D;
  --terracotta:#D2603A;
  --terracotta-dark:#B94F2C;
  --moss:#C9A227;
  --paper:#F7F5F0;
  --sand:#EFEBE3;
  --sand-deep:#E6E0D4;
  --text:#1B2320;
  --muted:#5C6A65;
  --line:#DDD8CD;
  --line-soft:#E9E4DA;
  --success:#2E7D5B;
  --warn:#B4552F;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,31,29,.06);
  --shadow-2:0 10px 26px -14px rgba(15,31,29,.22);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  --font-num:ui-monospace,"SFMono-Regular","DIN Alternate",Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  font-weight:400;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--terracotta);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:-.02em;line-height:1.22;}
h1{font-size:42px;}
h2{font-size:30px;}
h3{font-size:21px;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:0;}
.grid-container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x > .cell{padding-left:12px;padding-right:12px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1.3;
  padding:13px 24px;border:1.5px solid transparent;
  cursor:pointer;text-align:center;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--terracotta);color:#fff;box-shadow:var(--shadow-1);}
.btn--primary:hover{background:var(--terracotta-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--primary:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink);border-width:1.5px;}
.btn--ghost:hover{background:#E6EDE9;color:var(--ink);}
.btn--sm{padding:9px 18px;font-size:14px;}
.btn--block{display:flex;width:100%;}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
.btn--primary:focus-visible{outline-color:var(--terracotta);}
.link-text{display:inline-block;color:var(--ink);font-weight:600;border-bottom:1px solid var(--ink);padding-bottom:2px;text-underline-offset:3px;}
.link-text:hover{color:var(--terracotta);border-color:var(--terracotta);}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.08em;font-weight:500;
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);
  background:var(--sand);color:var(--muted);
}
.badge--ink{border-color:var(--ink);color:var(--ink);background:transparent;}
.badge--moss{border-color:rgba(201,162,39,.55);color:#8A6E14;background:rgba(201,162,39,.12);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
}
.brand-row{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:72px;
  transition:min-height .2s ease;
}
.site-header.is-stuck .brand-row{min-height:56px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-seal{
  width:28px;height:28px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  border:1.5px solid var(--ink);border-radius:4px;
  color:var(--ink);font-size:14px;font-weight:700;line-height:1;
  background:transparent;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.brand-sub{font-size:11px;letter-spacing:.18em;color:var(--muted);margin-top:3px;}
.brand-meta{
  display:flex;align-items:center;gap:22px;
  font-size:13px;color:var(--muted);flex:1;justify-content:center;
}
.brand-meta .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--success);margin-right:6px;vertical-align:middle;}
.brand-meta b{color:var(--ink);font-weight:600;}
.brand-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--paper);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.channel-row{border-top:1px solid var(--line-soft);}
.channel-inner{
  display:flex;align-items:center;gap:28px;
  height:48px;overflow-x:auto;scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-inner a{
  position:relative;flex:none;
  font-size:15px;color:var(--muted);font-weight:500;
  padding:0 0 2px;line-height:48px;
}
.channel-inner a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:transparent;border-radius:3px 3px 0 0;
}
.channel-inner a:hover{color:var(--ink);}
.channel-inner a.is-active{color:var(--ink);font-weight:600;}
.channel-inner a.is-active::after{background:var(--ink);}

.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--paper);}
.mobile-panel.is-open{display:block;}
.mobile-panel ul{padding:12px 0 4px;}
.mobile-panel li a{
  display:block;padding:12px 0;font-size:16px;color:var(--ink);
  border-bottom:1px dashed var(--line);
}
.mobile-panel .btn{margin:16px 0 20px;}

/* ---------- breadcrumb ---------- */
.crumb-bar{border-bottom:1px solid var(--line-soft);background:var(--paper);}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);padding:16px 0;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--ink);}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--text);font-weight:500;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 56px;
  background:
    radial-gradient(circle at 88% -10%, rgba(22,69,63,.07) 0 1px, transparent 1px) 0 0/22px 22px,
    var(--paper);
  border-bottom:1px solid var(--line-soft);
}
.page-hero-inner{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:56px;align-items:center;}
.page-hero h1{margin:18px 0 16px;font-size:42px;}
.page-hero h1 em{font-style:normal;color:var(--terracotta);}
.hero-lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:640px;}
.anchor-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.anchor-tabs a{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--muted);font-weight:500;
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  transition:all .18s ease;
}
.anchor-tabs a i{font-size:11px;color:var(--ink);}
.anchor-tabs a:hover{color:var(--ink);border-color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.hero-figure{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:var(--sand);
  box-shadow:var(--shadow-2);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;font-size:12px;color:#F4F2EC;
  background:linear-gradient(to top,rgba(15,31,29,.82),rgba(15,31,29,0));
}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--sand{background:var(--sand);}
.section-head{margin-bottom:32px;}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--muted);margin-bottom:10px;
}
.section-head .kicker::before{content:"";width:24px;height:1px;background:var(--ink);display:inline-block;}
.section-head h2{font-size:30px;margin-bottom:10px;}
.section-head p{color:var(--muted);max-width:720px;margin:0;font-size:15px;}

/* ---------- qa two column ---------- */
.qa-split{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
.qa-col{display:grid;gap:20px;}
.qa-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 24px 22px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.qa-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFC8B9;}
.qa-q{
  display:flex;gap:12px;align-items:flex-start;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:12px;
}
.qa-mark{
  flex:none;width:24px;height:24px;border-radius:6px;
  border:1.5px solid var(--ink);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:12px;font-weight:600;margin-top:2px;
}
.qa-a{font-size:15px;line-height:1.85;color:var(--text);margin:0;}
.qa-a + .qa-a{margin-top:.7em;}
.qa-tagrow{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* ---------- issue index cards ---------- */
.issue-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.issue-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.issue-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFC8B9;}
.issue-card .idx{
  font-family:var(--font-num);font-size:13px;color:var(--terracotta);font-weight:600;letter-spacing:.06em;
}
.issue-card h3{font-size:18px;margin:8px 0 8px;}
.issue-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0 0 16px;}
.issue-card .meta{margin-top:auto;font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px;}
.issue-card .meta i{color:var(--moss);}

/* ---------- image feature block ---------- */
.feature-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;
}
.feature-figure{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-2);}
.feature-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-copy h2{font-size:30px;margin-bottom:14px;}
.feature-copy p{color:var(--muted);font-size:15px;}
.check-list{display:grid;gap:12px;margin-top:20px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text);line-height:1.7;
  padding-bottom:12px;border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list i{color:var(--ink);font-size:14px;margin-top:6px;flex:none;}

/* ---------- steps strip ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line);}
.step{
  padding:32px 28px 8px 0;border-right:1px solid var(--line);
}
.step:last-child{border-right:0;}
.step .step-no{
  font-family:var(--font-num);font-size:13px;letter-spacing:.1em;color:var(--terracotta);font-weight:600;
}
.step h3{font-size:19px;margin:10px 0 8px;}
.step p{font-size:14px;color:var(--muted);line-height:1.78;margin:0;}

/* ---------- related capsules ---------- */
.rel-caps{display:flex;flex-wrap:wrap;gap:12px;}
.rel-caps a{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:500;color:var(--ink);
  transition:all .18s ease;
}
.rel-caps a:hover{border-color:var(--ink);background:#E6EDE9;transform:translateY(-1px);}
.rel-caps a i{font-size:12px;color:var(--terracotta);}

/* ---------- dark cta ---------- */
.cta-bar{
  background:var(--ink-deep);color:var(--f4,#F4F2EC);
  border-radius:var(--radius-card);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  border:1px solid rgba(244,242,236,.14);
}
.cta-bar h2{color:#F4F2EC;font-size:24px;margin-bottom:6px;}
.cta-bar p{color:rgba(244,242,236,.72);font-size:14px;margin:0;}
.cta-bar .cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap;}
.btn--onDark{background:transparent;color:#F4F2EC;border-color:rgba(244,242,236,.5);}
.btn--onDark:hover{background:rgba(244,242,236,.1);color:#fff;border-color:#F4F2EC;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:#F4F2EC;padding:72px 0 0;margin-top:0;}
.site-footer h4{color:#F4F2EC;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-seal{border-color:#F4F2EC;color:#F4F2EC;}
.footer-brand .brand-name{color:#F4F2EC;}
.footer-brand .brand-sub{color:rgba(244,242,236,.6);}
.footer-about p{color:rgba(244,242,236,.66);font-size:14px;line-height:1.8;}
.footer-list{display:grid;gap:10px;}
.footer-list a{color:rgba(244,242,236,.72);font-size:14px;}
.footer-list a:hover{color:#fff;}
.footer-meta{display:grid;gap:10px;font-size:14px;color:rgba(244,242,236,.66);}
.footer-meta b{color:#F4F2EC;font-family:var(--font-num);font-weight:600;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(244,242,236,.14);
  padding:20px 0 24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(244,242,236,.55);
}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  h1{font-size:32px;}
  .page-hero h1{font-size:34px;}
  .brand-meta{display:none;}
  .page-hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-figure{max-width:520px;}
  .issue-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .feature-row{grid-template-columns:1fr;gap:28px;}
  .steps{grid-template-columns:1fr;}
  .step{border-right:0;border-bottom:1px solid var(--line);padding:26px 0;}
  .step:last-child{border-bottom:0;}
  .qa-split{gap:18px;}
  .cta-bar{flex-direction:column;align-items:flex-start;gap:20px;}
}
@media screen and (max-width:767px){
  .grid-container{padding:0 18px;}
  .brand-actions .btn--sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-row .grid-container{padding-right:0;}
  .channel-inner{padding-right:18px;mask-image:linear-gradient(to right,#000 88%,transparent 100%);}
  .section{padding:64px 0;}
  .section--tight{padding:48px 0;}
  .page-hero{padding:44px 0 40px;}
  h1{font-size:28px;}
  .page-hero h1{font-size:28px;}
  h2{font-size:22px;}
  .section-head h2{font-size:22px;}
  .qa-split{grid-template-columns:1fr;}
  .issue-grid{grid-template-columns:1fr;}
  .feature-copy h2{font-size:22px;}
  .cta-bar{padding:26px 22px;}
  .cta-bar h2{font-size:20px;}
  .cta-bar .cta-actions{width:100%;}
  .cta-bar .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
  body{font-size:15px;}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category5 */
:root{
  --ink:#16453F;
  --ink-deep:#0F1F1D;
  --clay:#D2603A;
  --clay-dark:#BD5330;
  --moss:#C9A227;
  --paper:#F7F5F0;
  --sand:#EFEBE3;
  --text:#1B2320;
  --muted:#5C6A65;
  --line:#DDD8CD;
  --white:#FFFFFF;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,31,29,.06);
  --shadow-2:0 10px 26px -14px rgba(15,31,29,.22);
  --gap-xs:16px;
  --gap-sm:20px;
  --gap-md:24px;
  --gap-lg:32px;
  --section:96px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:ui-monospace,"DIN Alternate",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;}
a:hover{color:var(--clay);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.25;letter-spacing:-.02em;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:4px;}

/* ---------- 容器 ---------- */
.grid-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:var(--section) 0;}
.section--tight{padding:72px 0;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:30px;line-height:1.24;}
.section-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:760px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--ink);
  border:1px solid var(--ink);
  border-radius:999px;
  padding:3px 12px;
  margin-bottom:14px;
  background:var(--sand);
}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,240,.96);
  backdrop-filter:saturate(1.1) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-compact{box-shadow:var(--shadow-1);}
.brand-row{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
  transition:min-height .2s ease;
}
.site-header.is-compact .brand-row{min-height:56px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-seal{
  width:28px;height:28px;
  border:1.5px solid var(--ink);
  border-radius:4px;
  display:grid;place-items:center;
  font-size:15px;font-weight:600;color:var(--ink);
  line-height:1;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.02em;color:var(--ink);}
.brand-sub{font-size:11px;letter-spacing:.18em;color:var(--muted);}
.brand-meta{
  display:flex;
  gap:20px;
  margin-left:auto;
  font-size:13px;
  color:var(--muted);
}
.brand-meta b{color:var(--ink);font-weight:500;}
.brand-meta .dot{
  display:inline-block;width:6px;height:6px;border-radius:50%;
  background:#2E7D5B;margin-right:6px;vertical-align:middle;
}
.brand-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

/* 频道行 */
.channel-row{border-top:1px solid var(--line);}
.channel-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:52px;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
  mask-image:linear-gradient(to right,#000 92%,rgba(0,0,0,0) 100%);
  -webkit-mask-image:linear-gradient(to right,#000 92%,rgba(0,0,0,0) 100%);
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-inner a{
  position:relative;
  flex:0 0 auto;
  font-size:15px;
  color:var(--muted);
  padding:15px 0;
  transition:color .16s ease;
}
.channel-inner a:hover{color:var(--ink);}
.channel-inner a.is-active{color:var(--ink);font-weight:600;}
.channel-inner a.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:5px;
  height:3px;
  background:var(--ink);
  border-radius:2px;
}

/* 移动面板 */
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--paper);}
.mobile-panel.is-open{display:block;}
.mobile-panel ul{list-style:none;padding:8px 0 4px;}
.mobile-panel li a{
  display:block;
  padding:12px 0;
  font-size:15px;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-panel li a.is-active{color:var(--ink);font-weight:600;}
.mobile-panel .btn{margin:16px 0 20px;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border:1.5px solid var(--line);
  background:var(--white);
  border-radius:10px;
  cursor:pointer;
  padding:0;
  place-items:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  min-height:48px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  border:1.5px solid transparent;
  font-size:16px;
  font-weight:600;
  letter-spacing:.01em;
  text-decoration:none;
  cursor:pointer;
  transition:background .16s ease,color .16s ease,transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.btn--primary{background:var(--clay);color:#fff;box-shadow:var(--shadow-1);}
.btn--primary:hover{background:var(--clay-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--primary:active{transform:translateY(0);box-shadow:none;}
.btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn--ghost:hover{background:#E6EDE9;color:var(--ink);}
.btn--light{background:transparent;border-color:rgba(244,242,236,.5);color:#F4F2EC;}
.btn--light:hover{background:rgba(244,242,236,.12);color:#fff;}
.btn--sm{min-height:38px;font-size:14px;padding:0 16px;border-radius:9px;}
.btn--block{display:flex;width:100%;}
.btn--lg{min-height:52px;min-width:220px;flex-direction:column;gap:1px;padding:8px 26px;}
.btn__sub{font-size:12px;font-weight:400;opacity:.9;font-family:var(--font-num);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  overflow:hidden;
  padding:32px 0 44px;
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;
  background-position:center;
  opacity:.13;
  pointer-events:none;
}
.page-head .grid-container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--clay);}
.breadcrumb .is-current{color:var(--ink);}
.page-head h1{
  font-size:42px;
  line-height:1.22;
  max-width:900px;
}
.lede{
  margin-top:16px;
  font-size:17px;
  color:var(--muted);
  max-width:720px;
}
.anchor-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.anchor-tags a{
  font-size:13px;
  color:var(--ink);
  background:var(--sand);
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px 14px;
  transition:border-color .16s ease,background .16s ease,color .16s ease;
}
.anchor-tags a:hover{border-color:var(--ink);background:#E6EDE9;color:var(--ink);}

/* ---------- 要点速览 ---------- */
.quick-points{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.quick-points .point{
  padding:28px 26px 28px 0;
  border-left:1px solid var(--line);
}
.quick-points .point:first-child{border-left:0;padding-left:0;}
.quick-points .point:not(:first-child){padding-left:26px;}
.point-num{
  font-family:var(--font-num);
  font-size:13px;
  color:var(--clay);
  letter-spacing:.08em;
  display:block;
  margin-bottom:10px;
}
.quick-points h3{font-size:19px;margin-bottom:8px;}
.quick-points p{font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- 日志列表 ---------- */
.log-list{list-style:none;border-top:1px solid var(--line);}
.log-item{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:28px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.log-date{display:flex;flex-direction:column;gap:8px;align-items:flex-start;}
.log-date .num{font-size:14px;color:var(--ink);}
.log-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink);
  border:1px solid var(--line);
  background:var(--sand);
  border-radius:999px;
  padding:2px 10px;
}
.log-body h3{font-size:19px;margin-bottom:8px;letter-spacing:-.01em;}
.log-body p{font-size:15px;color:var(--muted);line-height:1.8;}
.log-body p + p{margin-top:4px;}

/* ---------- 图文 ---------- */
.split-figure{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  background:var(--sand);
}
.split-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.split-copy h2{font-size:30px;margin-bottom:16px;}
.split-copy p{font-size:16px;color:var(--muted);line-height:1.85;}
.split-copy p + p{margin-top:12px;}
.mini-list{list-style:none;margin-top:20px;}
.mini-list li{
  position:relative;
  padding-left:18px;
  font-size:15px;
  color:var(--text);
  line-height:1.8;
  padding-bottom:10px;
}
.mini-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:7px;height:7px;
  border:1.5px solid var(--ink);
  border-radius:2px;
}

/* ---------- 提示卡 ---------- */
.note-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.note-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.note-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#C9C2B4;}
.note-card h3{font-size:20px;margin-bottom:10px;}
.note-card p{font-size:15px;color:var(--muted);line-height:1.8;}
.note-card p + p{margin-top:8px;}
.note-card .note-kicker{
  font-family:var(--font-num);
  font-size:12px;
  color:var(--clay);
  letter-spacing:.08em;
  display:block;
  margin-bottom:10px;
}

/* ---------- 相关分类 ---------- */
.related-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding-top:32px;
}
.related-wrap h2{font-size:20px;letter-spacing:0;}
.pill-row{display:flex;flex-wrap:wrap;gap:12px;}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--ink);
  border:1px solid var(--line);
  background:var(--white);
  border-radius:999px;
  padding:8px 18px;
  transition:border-color .16s ease,color .16s ease,background .16s ease;
}
.pill:hover{border-color:var(--ink);background:#E6EDE9;color:var(--ink);}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background:var(--ink-deep);
  color:#F4F2EC;
  border-radius:var(--radius-card);
  padding:32px 36px;
  min-height:140px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  border:1px solid rgba(244,242,236,.14);
}
.cta-band h2{color:#F4F2EC;font-size:26px;line-height:1.3;}
.cta-band p{color:rgba(244,242,236,.74);font-size:15px;margin-top:8px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-deep);
  color:#F4F2EC;
  padding:64px 0 0;
  margin-top:96px;
}
.site-footer h4{
  font-size:14px;
  letter-spacing:.06em;
  color:#F4F2EC;
  font-weight:600;
  margin-bottom:16px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer .brand-seal{border-color:rgba(244,242,236,.55);color:#F4F2EC;}
.site-footer .brand-name{color:#F4F2EC;}
.site-footer .brand-sub{color:rgba(244,242,236,.62);}
.footer-about p{
  font-size:14px;
  color:rgba(244,242,236,.72);
  line-height:1.8;
  max-width:420px;
}
.footer-about p + p{margin-top:8px;}
.footer-list{list-style:none;}
.footer-list li{margin-bottom:10px;}
.footer-list a{
  font-size:14px;
  color:rgba(244,242,236,.76);
  transition:color .16s ease;
}
.footer-list a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(244,242,236,.72);}
.footer-meta b{color:#F4F2EC;font-family:var(--font-num);font-weight:500;}
.footer-bottom{
  margin-top:40px;
  border-top:1px solid rgba(244,242,236,.14);
  padding:18px 0 22px;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(244,242,236,.62);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .page-head h1{font-size:32px;}
  .section{padding:72px 0;}
  .quick-points{grid-template-columns:1fr;}
  .quick-points .point{padding:22px 0;border-left:0;border-top:1px solid var(--line);}
  .quick-points .point:first-child{border-top:0;padding-top:0;}
  .quick-points .point:not(:first-child){padding-left:0;}
  .log-item{grid-template-columns:160px 1fr;gap:20px;}
  .note-grid{grid-template-columns:1fr;}
  .split-copy h2{font-size:24px;margin-top:24px;}
  .cta-band{padding:28px;}
  .cta-band h2{font-size:22px;}
  .site-footer{margin-top:72px;}
}
@media screen and (max-width:767px){
  .brand-meta{display:none;}
  .nav-toggle{display:grid;}
  .brand-actions .btn--sm{display:none;}
  .brand-row{min-height:60px;}
  .site-header.is-compact .brand-row{min-height:60px;}
  .page-head{padding:24px 0 36px;}
  .page-head h1{font-size:28px;}
  .lede{font-size:16px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:22px;}
  .log-item{grid-template-columns:1fr;gap:10px;padding:22px 0;}
  .log-date{flex-direction:row;align-items:center;gap:10px;}
  .cta-band{flex-direction:column;align-items:flex-start;min-height:0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .grid-container{padding-left:18px;padding-right:18px;}
  .footer-bottom{flex-direction:column;}
}
@media screen and (max-width:520px){
  body{font-size:15px;}
  .page-head h1{font-size:26px;}
  .log-body h3{font-size:18px;}
  .note-card{padding:22px;}
  .related-wrap{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .note-card:hover{transform:none;}
  .btn:hover{transform:none;}
}