/* roulang page: index */
:root{
  --ink:#1C2B33;
  --ink-2:#5F7078;
  --primary:#2F5468;
  --primary-dark:#244A5F;
  --primary-deep:#203E4F;
  --primary-soft:#E9F1F4;
  --copper:#A77B4F;
  --bg:#F6F7F5;
  --card:#FFFFFF;
  --line:#DCE5E8;
  --ok:#527A68;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:10px;
  --shadow:0 12px 32px rgba(31,64,86,.08);
  --shadow-hover:0 16px 40px rgba(31,64,86,.12);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
[hidden]{display:none !important}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
@media (max-width:640px){.wrap{padding:0 20px}}

:where(a,button,input,summary,label):focus-visible{
  outline:2px solid var(--copper);
  outline-offset:3px;
  border-radius:6px;
}

/* ============ 头部 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
}
.header-top-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:34px;height:34px;flex:0 0 auto;color:var(--primary)}
.brand-text{
  font-size:19px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--primary-deep);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.header-actions{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.link-quiet{
  font-size:14px;
  color:var(--ink-2);
  transition:color .18s ease;
}
.link-quiet:hover{color:var(--primary)}

.header-nav{border-top:1px solid var(--line);background:#FFFFFF}
.nav-scroll{
  display:flex;
  align-items:center;
  height:52px;
  overflow-x:auto;
  overflow-y:hidden;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-scroll::-webkit-scrollbar{display:none}
.chips{display:flex;align-items:center;gap:10px;white-space:nowrap}
.chip{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:7px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:14px;
  color:var(--ink-2);
  background:transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.chip:hover{
  background:#FFFFFF;
  color:var(--primary);
  border-color:#C9D8DE;
  box-shadow:0 4px 12px rgba(31,64,86,.06);
}
.chip.active{
  background:var(--primary-soft);
  color:var(--primary-deep);
  border-color:#CFE0E6;
  font-weight:600;
}
.chip.active::after{
  content:"";
  position:absolute;
  left:16px;
  right:16px;
  bottom:-1px;
  height:2px;
  border-radius:2px;
  background:var(--copper);
}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#FFFFFF;
  color:var(--primary);
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--primary-soft);border-color:#CFE0E6}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
  background:rgba(32,62,79,.42);
}
.drawer.open{display:block}
.drawer-panel{
  position:absolute;
  top:0;
  right:0;
  width:min(320px,86vw);
  height:100%;
  background:#FFFFFF;
  padding:22px 20px 32px;
  display:flex;
  flex-direction:column;
  gap:18px;
  box-shadow:-16px 0 40px rgba(31,64,86,.16);
}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-weight:700;
  color:var(--primary-deep);
  font-size:16px;
}
.drawer-close{
  width:34px;height:34px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#FFFFFF;
  font-size:18px;
  line-height:1;
  color:var(--ink-2);
  cursor:pointer;
}
.drawer-close:hover{background:var(--primary-soft);color:var(--primary)}
.drawer-links{display:flex;flex-direction:column;gap:8px}
.drawer-links a{
  display:block;
  padding:11px 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  font-size:15px;
  color:var(--ink-2);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.drawer-links a:hover{background:var(--primary-soft);color:var(--primary-deep);border-color:#CFE0E6}
.drawer-links a.active{
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-weight:600;
  border-color:#CFE0E6;
}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn-primary{
  background:var(--primary);
  color:#FFFFFF;
  box-shadow:0 8px 20px rgba(47,84,104,.18);
}
.btn-primary:hover{
  background:var(--primary-dark);
  transform:translateY(-1px);
  box-shadow:0 12px 26px rgba(47,84,104,.24);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(47,84,104,.2)}
.btn-ghost{
  background:#FFFFFF;
  color:var(--primary);
  border-color:var(--primary);
}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:11px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  transition:color .18s ease;
}
.link-arrow svg{transition:transform .18s ease}
.link-arrow:hover{color:var(--primary-dark)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:44px 0 56px;
  overflow:hidden;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(47,84,104,.06), rgba(47,84,104,0) 62%),
    var(--bg);
}
@media (min-width:1024px){.hero{padding:64px 0 78px}}
.hero-grid{display:grid;gap:36px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.06fr .94fr;gap:56px}}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  border-radius:999px;
  background:#FFFFFF;
  border:1px solid var(--line);
  font-size:13px;
  color:var(--ink-2);
  letter-spacing:.04em;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--copper);
}
.h1{
  margin-top:20px;
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--primary-deep);
}
.hero-sub{
  margin-top:18px;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:34em;
}
.hero-actions{
  margin-top:30px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-meta{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  font-size:13px;
  color:var(--ink-2);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta span::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:var(--ok);
}

.hero-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:var(--primary-soft);
  aspect-ratio:4/3;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(246,247,245,.10) 0%, rgba(32,62,79,.34) 100%);
}
.hero-badge{
  position:absolute;
  left:18px;
  right:18px;
  bottom:18px;
  z-index:2;
  padding:14px 18px;
  border-radius:14px;
  background:rgba(255,255,255,.94);
  border:1px solid rgba(220,229,232,.9);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  box-shadow:0 10px 24px rgba(31,64,86,.14);
}
.hero-badge strong{
  display:block;
  font-size:14px;
  color:var(--primary-deep);
}
.hero-badge small{
  display:block;
  font-size:12px;
  color:var(--ink-2);
  line-height:1.6;
}
.hero-badge .dot{
  flex:0 0 auto;
  width:34px;height:34px;
  border-radius:10px;
  background:var(--primary-soft);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
}

/* ============ 快速信任条 ============ */
.trustbar{
  background:#FFFFFF;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.trustbar-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
}
@media (min-width:768px){.trustbar-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.trustbar-item{
  padding:22px 18px;
  border-right:1px solid var(--line);
}
.trustbar-item:last-child{border-right:none}
@media (max-width:767px){
  .trustbar-item:nth-child(2n){border-right:none}
  .trustbar-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
.trustbar-item b{
  display:block;
  font-size:20px;
  font-weight:700;
  color:var(--primary-deep);
  letter-spacing:.01em;
}
.trustbar-item span{
  display:block;
  margin-top:4px;
  font-size:13px;
  color:var(--ink-2);
}

/* ============ 板块通用 ============ */
.section{padding:60px 0}
@media (min-width:768px){.section{padding:92px 0}}
.section-alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
  flex-wrap:wrap;
}
.h2{
  font-size:clamp(24px,2.7vw,34px);
  line-height:1.4;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--primary-deep);
}
.h3{
  font-size:20px;
  line-height:1.5;
  font-weight:600;
  color:var(--primary-deep);
}
.lead{
  margin-top:12px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:52em;
}
.divider-line{
  width:44px;
  height:2px;
  border-radius:2px;
  background:var(--copper);
  margin:16px 0 20px;
}

/* ============ 品牌主张 ============ */
.claim-grid{display:grid;gap:32px}
@media (min-width:1024px){.claim-grid{grid-template-columns:5fr 7fr;gap:56px;align-items:start}}
.claim-side{display:flex;flex-direction:column;gap:18px}
.claim-thumb{
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:var(--primary-soft);
  box-shadow:var(--shadow);
}
.claim-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.claim-thumb:hover img{transform:scale(1.02)}
.claim-body p{
  margin-top:16px;
  font-size:15.5px;
  line-height:1.9;
  color:var(--ink-2);
}
.claim-points{
  margin-top:26px;
  display:grid;
  gap:14px;
}
@media (min-width:640px){.claim-points{grid-template-columns:repeat(2,minmax(0,1fr))}}
.claim-point{
  padding:18px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:#FFFFFF;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.claim-point:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFE0E6}
.claim-point b{display:block;font-size:15px;color:var(--primary-deep)}
.claim-point span{display:block;margin-top:6px;font-size:13.5px;color:var(--ink-2);line-height:1.75}

/* ============ Bento ============ */
.bento{display:grid;gap:24px}
@media (min-width:1024px){.bento{grid-template-columns:repeat(12,minmax(0,1fr))}}
.bento-big{display:block}
@media (min-width:1024px){.bento-big{grid-column:span 7}}
.bento-side{display:grid;gap:24px;align-content:start}
@media (min-width:1024px){.bento-side{grid-column:span 5}}

.media-card{
  display:flex;
  flex-direction:column;
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  height:100%;
}
.media-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFE0E6}
.media-card .thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--primary-soft);
}
.media-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease}
.media-card:hover .thumb img{transform:scale(1.02)}
.media-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.media-card.big .thumb{aspect-ratio:21/10}
.media-card.big .body{padding:26px}
.media-card.big .h3{font-size:22px}

.card-tag{
  display:inline-flex;
  align-items:center;
  padding:3px 11px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
  width:fit-content;
}
.card-desc{
  font-size:14px;
  line-height:1.85;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  padding-top:6px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--ink-2);
}

.index-row{
  margin-top:6px;
  display:grid;
  gap:12px;
  border-top:1px solid var(--line);
  padding-top:20px;
}
@media (min-width:768px){.index-row{grid-template-columns:repeat(3,minmax(0,1fr))}}
.index-row a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 16px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#FFFFFF;
  font-size:14px;
  color:var(--primary-deep);
  transition:background .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.index-row a:hover{background:var(--primary-soft);border-color:#CFE0E6;box-shadow:0 6px 16px rgba(31,64,86,.06)}

/* ============ 最新信息列表 ============ */
.post-list{display:grid;gap:18px}
.post-item{
  display:grid;
  gap:0;
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
@media (min-width:680px){.post-item{grid-template-columns:210px 1fr}}
.post-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFE0E6}
.post-thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--primary-soft);
  border-bottom:1px solid var(--line);
}
@media (min-width:680px){
  .post-thumb{aspect-ratio:auto;height:100%;min-height:150px;border-bottom:none;border-right:1px solid var(--line)}
}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease}
.post-item:hover .post-thumb img{transform:scale(1.02)}
.post-body{
  padding:20px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  min-width:0;
}
.post-title{
  font-size:18px;
  line-height:1.55;
  font-weight:600;
  color:var(--primary-deep);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
@media (min-width:1024px){.post-title{font-size:19px}}
.post-item:hover .post-title{color:var(--primary)}
.post-summary{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-meta{
  margin-top:auto;
  padding-top:10px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--ink-2);
}
.post-meta .left{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.post-meta time{font-variant-numeric:tabular-nums}

.empty-state{
  display:flex;
  align-items:center;
  gap:14px;
  padding:26px 24px;
  border-radius:var(--r-md);
  background:var(--primary-soft);
  border:1px dashed #C9D8DE;
  color:var(--primary-deep);
  font-size:15px;
}
.empty-state svg{flex:0 0 auto;color:var(--primary)}

/* ============ 信任背书 ============ */
.evidence-grid{display:grid;gap:20px}
@media (min-width:640px){.evidence-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.evidence-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.evidence{
  padding:24px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:#FFFFFF;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.evidence:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFE0E6}
.evidence .ico{
  width:38px;height:38px;
  border-radius:11px;
  background:var(--primary-soft);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:14px;
}
.evidence b{display:block;font-size:16px;color:var(--primary-deep)}
.evidence p{margin-top:8px;font-size:13.5px;line-height:1.8;color:var(--ink-2)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:22px 44px 22px 4px;
  position:relative;
  font-size:18px;
  font-weight:600;
  color:var(--primary-deep);
  line-height:1.6;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:8px;
  top:50%;
  width:12px;
  height:2px;
  border-radius:2px;
  background:var(--copper);
  transform:translateY(-50%);
  transition:transform .2s ease;
}
.faq-item summary::before{
  content:"";
  position:absolute;
  right:13px;
  top:50%;
  width:2px;
  height:12px;
  border-radius:2px;
  background:var(--copper);
  transform:translateY(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::before{transform:translateY(-50%) rotate(90deg);opacity:0}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(180deg)}
.faq-answer{
  padding:0 4px 24px;
  font-size:15.5px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:52em;
}
.faq-item[open]{background:#F9FBFC}

/* ============ CTA ============ */
.cta-band{padding:60px 0}
@media (min-width:768px){.cta-band{padding:88px 0}}
.cta-card{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:#FFFFFF;
  box-shadow:var(--shadow);
  padding:32px;
  display:grid;
  gap:28px;
}
@media (min-width:1024px){
  .cta-card{grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:48px}
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);line-height:1.45;font-weight:700;color:var(--primary-deep)}
.cta-card p{margin-top:12px;font-size:15px;line-height:1.9;color:var(--ink-2)}
.subscribe-form{display:flex;flex-direction:column;gap:12px}
.subscribe-form label{font-size:13.5px;font-weight:600;color:var(--primary-deep)}
.subscribe-row{display:flex;flex-direction:column;gap:12px}
@media (min-width:640px){.subscribe-row{flex-direction:row;align-items:stretch}}
.subscribe-row input{
  flex:1 1 auto;
  min-width:0;
  height:48px;
  padding:0 16px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#FFFFFF;
  font-size:15px;
  color:var(--ink);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.subscribe-row input::placeholder{color:#93A3AA}
.subscribe-row input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(47,84,104,.14);
}
.subscribe-row .btn{height:48px;flex:0 0 auto}
@media (max-width:639px){.subscribe-row .btn{width:100%}}
.form-hint{font-size:13px;line-height:1.7;color:var(--ink-2)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--primary-deep);
  color:rgba(255,255,255,.78);
  padding:56px 0 0;
}
.footer-grid{display:grid;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#FFFFFF}
.footer-brand .brand-mark{color:#FFFFFF;opacity:.9}
.footer-brand strong{font-size:17px;font-weight:700;letter-spacing:.01em}
.footer-desc{
  margin-top:14px;
  font-size:13.5px;
  line-height:1.9;
  color:rgba(255,255,255,.62);
  max-width:30em;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:#FFFFFF;
  letter-spacing:.04em;
  margin-bottom:14px;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:13.5px;
  color:rgba(255,255,255,.68);
  transition:color .18s ease,transform .18s ease;
  width:fit-content;
}
.footer-links a:hover{color:#FFFFFF;transform:translateX(3px)}
.footer-note{font-size:13px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-bottom{
  margin-top:44px;
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:#FFFFFF}

/* ============ 响应式修正 ============ */
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .link-quiet{display:none}
  .brand-text{font-size:17px}
}
@media (max-width:640px){
  .header-top-inner{height:64px}
  .header-actions{gap:10px}
  .hero{padding:34px 0 46px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .hero-badge{left:12px;right:12px;bottom:12px;padding:12px 14px}
  .section-head{margin-bottom:26px}
  .media-card .body{padding:18px}
  .media-card.big .body{padding:20px}
  .post-body{padding:18px}
  .cta-card{padding:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
    --ink:#1C2B33;
    --ink-2:#5F7078;
    --line:#DCE5E8;
    --bg:#F6F7F5;
    --card:#FFFFFF;
    --primary:#2F5468;
    --primary-dark:#203E4F;
    --primary-soft:#E9F1F4;
    --copper:#A77B4F;
    --moss:#527A68;
    --r-lg:20px;
    --r-md:16px;
    --r-sm:10px;
    --shadow:0 12px 32px rgba(31,64,86,.08);
    --shadow-hover:0 16px 40px rgba(31,64,86,.12);
    --t:180ms ease;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    letter-spacing:.01em;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit}
  input{font:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding-left:0;list-style:none}
  :focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

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

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:#fff;
    border-bottom:1px solid var(--line);
  }
  .header-top{
    display:flex;align-items:center;gap:24px;
    height:72px;
  }
  .brand{
    display:inline-flex;align-items:center;gap:10px;
    font-size:17px;font-weight:700;color:var(--primary-dark);
    letter-spacing:.02em;white-space:nowrap;
    transition:color var(--t);
  }
  .brand:hover{color:var(--primary)}
  .brand-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:38px;height:38px;border-radius:11px;
    background:var(--primary-soft);color:var(--primary);
    border:1px solid #D6E3E8;
  }
  .header-main-nav{
    display:flex;align-items:center;gap:22px;
    margin-left:auto;
    font-size:14.5px;color:var(--ink-2);
  }
  .header-main-nav a{padding:6px 0;transition:color var(--t);position:relative}
  .header-main-nav a:hover{color:var(--primary)}
  .header-main-nav a.is-active{color:var(--primary);font-weight:600}
  .header-actions{display:flex;align-items:center;gap:10px;margin-left:8px}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:11px 20px;border-radius:var(--r-sm);
    font-size:15px;font-weight:600;line-height:1.2;
    border:1px solid transparent;cursor:pointer;
    transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  }
  .btn:active{transform:translateY(1px)}
  .btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
  .btn-primary:hover{background:#244A5F;border-color:#244A5F;transform:translateY(-1px);box-shadow:var(--shadow)}
  .btn-ghost{background:transparent;color:var(--primary);border-color:#BFD3DB}
  .btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary);transform:translateY(-1px)}
  .btn-quiet{background:transparent;color:var(--ink-2);border-color:transparent;padding:10px 12px}
  .btn-quiet:hover{color:var(--primary);background:var(--primary-soft)}
  .btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}

  .chipbar{border-top:1px solid var(--line);background:#fff}
  .chip-scroll{
    display:flex;align-items:center;gap:10px;
    height:52px;overflow-x:auto;scrollbar-width:none;
  }
  .chip-scroll::-webkit-scrollbar{display:none}
  .chip{
    flex:0 0 auto;
    display:inline-flex;align-items:center;gap:6px;
    padding:7px 15px;border-radius:999px;
    border:1px solid var(--line);background:transparent;
    color:var(--ink-2);font-size:14px;white-space:nowrap;
    transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
  }
  .chip:hover{background:#fff;border-color:#BFD3DB;color:var(--primary);box-shadow:0 4px 14px rgba(31,64,86,.06)}
  .chip.is-active{
    background:var(--primary-soft);
    color:var(--primary);
    border-color:transparent;
    box-shadow:inset 0 -2px 0 var(--copper);
    font-weight:600;
  }

  .menu-btn{
    display:none;margin-left:auto;
    width:42px;height:42px;border-radius:11px;
    border:1px solid var(--line);background:#fff;
    align-items:center;justify-content:center;cursor:pointer;
  }
  .menu-btn:hover{background:var(--primary-soft);border-color:#BFD3DB}
  .mobile-drawer{
    display:none;
    border-top:1px solid var(--line);
    background:#fff;
    padding:16px 0 22px;
  }
  .mobile-drawer.is-open{display:block}
  .drawer-group + .drawer-group{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line)}
  .drawer-title{font-size:13px;color:var(--ink-2);letter-spacing:.06em;margin-bottom:10px}
  .drawer-links{display:flex;flex-wrap:wrap;gap:10px}

  /* ---------- page frame ---------- */
  .page-main{padding:36px 0 0}
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13.5px;color:var(--ink-2);margin-bottom:26px;
  }
  .breadcrumb a{color:var(--ink-2);transition:color var(--t)}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .sep{color:#B7C7CE}
  .breadcrumb .now{color:var(--ink);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;letter-spacing:.14em;color:var(--copper);
    text-transform:uppercase;font-weight:600;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--copper);display:inline-block}

  .article-head{max-width:880px}
  .article-head h1{
    font-family:"Songti SC","STSong","SimSun",serif;
    font-size:clamp(30px,4.4vw,50px);
    line-height:1.28;
    font-weight:700;
    letter-spacing:.01em;
    margin:16px 0 18px;
    color:var(--primary-dark);
    overflow-wrap:break-word;
  }
  .cat-tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 13px;border-radius:999px;
    background:var(--primary-soft);color:var(--primary);
    font-size:13px;font-weight:600;border:1px solid #D6E3E8;
  }
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;
    font-size:13.5px;color:var(--ink-2);
    padding-bottom:26px;border-bottom:1px solid var(--line);
  }
  .article-meta span{display:inline-flex;align-items:center;gap:6px}
  .article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3D3DA}

  .cover-frame{
    margin:26px 0 40px;
    border-radius:var(--r-lg);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    background:linear-gradient(135deg,#E9F1F4,#F6F7F5);
    aspect-ratio:21/9;
  }
  .cover-frame img{width:100%;height:100%;object-fit:cover}

  /* ---------- article layout ---------- */
  .article-layout{
    display:grid;
    grid-template-columns:minmax(0,2fr) minmax(280px,1fr);
    gap:36px;
    align-items:start;
    padding-bottom:8px;
  }
  .article-body{
    max-width:800px;
    font-size:17px;
    line-height:1.88;
    color:var(--ink);
    overflow-wrap:break-word;
  }
  .article-body > * + *{margin-top:18px}
  .article-body h2{
    font-size:28px;line-height:1.4;font-weight:700;
    margin-top:42px;color:var(--primary-dark);letter-spacing:.01em;
  }
  .article-body h3{
    font-size:21px;line-height:1.5;font-weight:600;
    margin-top:34px;color:var(--primary-dark);
  }
  .article-body h4{font-size:18px;font-weight:600;margin-top:26px;color:var(--primary-dark)}
  .article-body p{margin-top:18px}
  .article-body strong{font-weight:600;color:var(--primary-dark)}
  .article-body ul,.article-body ol{margin-top:18px;padding-left:1.35em}
  .article-body ul{list-style:disc}
  .article-body ol{list-style:decimal}
  .article-body li{margin-top:9px;padding-left:2px}
  .article-body li::marker{color:var(--copper)}
  .article-body blockquote{
    margin:26px 0;padding:16px 22px;
    border-left:3px solid var(--copper);
    background:var(--primary-soft);
    border-radius:0 var(--r-md) var(--r-md) 0;
    color:var(--primary-dark);font-size:16.5px;
  }
  .article-body blockquote p{margin:0}
  .article-body img{border-radius:var(--r-md);border:1px solid var(--line);width:100%;height:auto;margin:26px 0}
  .article-body figure{margin:26px 0}
  .article-body figcaption{font-size:13.5px;color:var(--ink-2);margin-top:10px;text-align:center}
  .article-body a{color:var(--primary);border-bottom:1px solid #BFD3DB;transition:border-color var(--t),color var(--t)}
  .article-body a:hover{color:var(--copper);border-color:var(--copper)}
  .article-body table{
    width:100%;display:block;overflow-x:auto;
    border-collapse:collapse;margin:26px 0;
    font-size:15px;
  }
  .article-body th,.article-body td{
    border:1px solid var(--line);padding:10px 14px;text-align:left;min-width:110px;
  }
  .article-body th{background:var(--primary-soft);color:var(--primary-dark);font-weight:600}
  .article-body hr{border:none;border-top:1px solid var(--line);margin:34px 0}
  .article-body code{
    background:#EDF3F5;color:var(--primary-dark);
    padding:2px 6px;border-radius:6px;font-size:14.5px;
  }

  /* ---------- sidebar ---------- */
  .side-col{position:sticky;top:140px;display:flex;flex-direction:column;gap:20px}
  .side-card{
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow);
  }
  .side-card h2,.side-card h3{
    font-size:15.5px;font-weight:700;color:var(--primary-dark);
    margin-bottom:14px;display:flex;align-items:center;gap:8px;
  }
  .side-card h2::before,.side-card h3::before{
    content:"";width:3px;height:14px;border-radius:2px;background:var(--copper);
  }
  .rel-list li + li{border-top:1px dashed var(--line);margin-top:12px;padding-top:12px}
  .rel-link{display:block;transition:transform var(--t)}
  .rel-link:hover{transform:translateX(3px)}
  .rel-link .rel-title{
    font-size:14.5px;line-height:1.6;color:var(--ink);font-weight:500;
    display:block;margin-bottom:6px;transition:color var(--t);
  }
  .rel-link:hover .rel-title{color:var(--primary)}
  .rel-link .rel-meta{font-size:12.5px;color:var(--ink-2)}
  .side-actions{display:flex;flex-direction:column;gap:10px}
  .side-actions .btn{width:100%}
  .sub-mini{background:var(--primary-soft);border-color:#D6E3E8;box-shadow:none}
  .sub-mini p{font-size:13.5px;color:var(--ink-2);line-height:1.75;margin-bottom:12px}
  .sub-mini .field{display:block}
  .sub-mini label{font-size:13px;color:var(--primary-dark);font-weight:600;display:block;margin-bottom:6px}
  .sub-mini input{
    width:100%;height:42px;padding:0 12px;border-radius:var(--r-sm);
    border:1px solid #C7D8DE;background:#fff;color:var(--ink);
    font-size:14px;transition:border-color var(--t),box-shadow var(--t);
  }
  .sub-mini input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,84,104,.14)}
  .sub-mini input::placeholder{color:#9CAEB6}
  .sub-mini .btn{margin-top:10px}

  /* ---------- related strip ---------- */
  .related-strip{padding:64px 0 0}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:16px;margin-bottom:26px;
  }
  .section-head h2{
    font-family:"Songti SC","STSong","SimSun",serif;
    font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700;
    color:var(--primary-dark);letter-spacing:.01em;
  }
  .link-more{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;color:var(--primary);font-weight:600;
    transition:gap var(--t),color var(--t);
  }
  .link-more:hover{gap:10px;color:var(--copper)}
  .related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .rel-card{
    display:flex;flex-direction:column;
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow);
    transition:box-shadow var(--t),transform var(--t),border-color var(--t);
  }
  .rel-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#C7D8DE}
  .rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--primary-soft)}
  .rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
  .rel-card:hover .rel-thumb img{transform:scale(1.02)}
  .rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .rel-body .tag-mini{
    align-self:flex-start;font-size:12px;padding:3px 10px;border-radius:999px;
    background:var(--primary-soft);color:var(--primary);font-weight:600;
  }
  .rel-body h3{font-size:18px;line-height:1.55;font-weight:600;color:var(--ink);transition:color var(--t)}
  .rel-card:hover .rel-body h3{color:var(--primary)}
  .rel-body p{font-size:14px;color:var(--ink-2);line-height:1.7}
  .rel-body .foot{
    margin-top:auto;display:flex;align-items:center;justify-content:space-between;
    font-size:13px;color:var(--ink-2);
  }
  .arrow{display:inline-block;transition:transform var(--t)}
  .rel-card:hover .arrow{transform:translateX(3px)}

  /* ---------- CTA ---------- */
  .cta-band{padding:80px 0 0}
  .cta-box{
    background:var(--primary-dark);
    border-radius:var(--r-lg);
    padding:44px;
    display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;
    color:#fff;
    position:relative;overflow:hidden;
  }
  .cta-box::after{
    content:"";position:absolute;inset:auto -80px -120px auto;
    width:320px;height:320px;border-radius:50%;
    background:radial-gradient(circle at center,rgba(233,241,244,.12),transparent 68%);
    pointer-events:none;
  }
  .cta-box h2{
    font-family:"Songti SC","STSong","SimSun",serif;
    font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700;
    margin-bottom:12px;
  }
  .cta-box p{font-size:15px;color:#CBD9DF;line-height:1.8}
  .sub-form{position:relative;z-index:1}
  .sub-form label{display:block;font-size:13.5px;color:#D6E3E8;margin-bottom:8px;font-weight:600}
  .sub-row{display:flex;gap:10px}
  .sub-row input{
    flex:1;min-width:0;height:48px;padding:0 16px;border-radius:var(--r-sm);
    border:1px solid #3A5B6C;background:#1A3441;color:#fff;font-size:15px;
    transition:border-color var(--t),box-shadow var(--t),background var(--t);
  }
  .sub-row input::placeholder{color:#8FA7B2}
  .sub-row input:focus{outline:none;border-color:var(--copper);box-shadow:0 0 0 3px rgba(167,123,79,.28);background:#1D3A48}
  .sub-row .btn{height:48px;background:#fff;color:var(--primary-dark);border-color:#fff}
  .sub-row .btn:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-1px)}
  .sub-hint{font-size:13px;color:#9DB4BE;margin-top:10px;line-height:1.7}

  /* ---------- empty state ---------- */
  .empty-state{
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--r-lg);box-shadow:var(--shadow);
    padding:56px 32px;text-align:center;margin-bottom:12px;
  }
  .empty-icon{
    width:62px;height:62px;border-radius:16px;margin:0 auto 18px;
    background:var(--primary-soft);color:var(--primary);
    display:flex;align-items:center;justify-content:center;
  }
  .empty-state h1{font-size:26px;font-weight:700;color:var(--primary-dark);margin-bottom:10px;font-family:"Songti SC","STSong","SimSun",serif}
  .empty-state p{font-size:15px;color:var(--ink-2);margin-bottom:22px}

  /* ---------- footer ---------- */
  .site-footer{background:var(--primary-dark);color:#D7E3E8;margin-top:80px;padding:64px 0 26px}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px}
  .footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;color:#fff;margin-bottom:14px}
  .footer-brand .brand-mark{background:rgba(233,241,244,.12);color:#E9F1F4;border-color:rgba(233,241,244,.2)}
  .footer-desc{font-size:14px;line-height:1.8;color:#A9C0C9;max-width:320px}
  .footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.02em}
  .footer-links{display:flex;flex-direction:column;gap:10px;font-size:14px}
  .footer-links a{color:#A9C0C9;transition:color var(--t),transform var(--t);display:inline-block}
  .footer-links a:hover{color:#fff;transform:translateX(2px)}
  .footer-note{font-size:13.5px;line-height:1.8;color:#98B1BB}
  .footer-bottom{
    margin-top:44px;padding-top:20px;
    border-top:1px solid rgba(233,241,244,.14);
    display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
    font-size:13px;color:#8FA7B2;
  }
  .footer-bottom a{color:#C4D6DD;border-bottom:1px solid rgba(196,214,221,.35);transition:color var(--t),border-color var(--t)}
  .footer-bottom a:hover{color:#fff;border-color:#fff}

  /* ---------- responsive ---------- */
  @media (max-width:1180px){
    .header-main-nav{gap:16px;font-size:14px}
  }
  @media (max-width:1023px){
    .header-main-nav{display:none}
    .header-actions{display:none}
    .menu-btn{display:inline-flex}
    .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
    .side-col{position:static}
    .article-body{max-width:none}
    .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .cta-box{grid-template-columns:1fr;padding:36px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .page-main{padding-top:28px}
  }
  @media (max-width:767px){
    .wrap{padding:0 20px}
    .header-top{height:64px;gap:12px}
    .brand{font-size:15.5px}
    .brand-mark{width:34px;height:34px;border-radius:10px}
    .cover-frame{margin:20px 0 28px;border-radius:var(--r-md);aspect-ratio:16/9}
    .article-body{font-size:16.5px;line-height:1.85}
    .article-body h2{font-size:24px;margin-top:34px}
    .article-body h3{font-size:20px;margin-top:26px}
    .related-grid{grid-template-columns:minmax(0,1fr)}
    .cta-band{padding-top:56px}
    .cta-box{padding:28px 22px;border-radius:var(--r-md)}
    .sub-row{flex-direction:column}
    .sub-row .btn{width:100%}
    .site-footer{margin-top:56px;padding:48px 0 24px}
    .footer-grid{grid-template-columns:1fr;gap:26px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .related-strip{padding-top:48px}
    .section-head{flex-direction:column;align-items:flex-start;gap:10px}
    .breadcrumb{font-size:13px}
  }
  @media (max-width:520px){
    .article-head h1{font-size:29px}
    .empty-state{padding:40px 20px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
  }

/* roulang page: category1 */
:root{
  --brand:#2F5468;
  --brand-dark:#203E4F;
  --brand-hover:#244A5F;
  --brand-light:#E9F1F4;
  --copper:#A77B4F;
  --bg:#F6F7F5;
  --card:#FFFFFF;
  --ink:#1C2B33;
  --sub:#5F7078;
  --line:#DCE5E8;
  --ok:#527A68;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow:0 12px 32px rgba(31,64,86,.08);
  --shadow-hover:0 16px 40px rgba(31,64,86,.12);
  --ease:190ms ease;
  --max:1200px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,p,figure,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}

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

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
}

.header-top-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--brand-dark);
  font-weight:600;
  font-size:17px;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--brand);
  background:var(--brand-light);
  flex:none;
}
.brand:hover .brand-mark{border-color:var(--brand);}
.brand-name{line-height:1.2;}

.header-actions{
  display:flex;
  align-items:center;
  gap:18px;
}

.link-quiet{
  font-size:14px;
  color:var(--sub);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.link-quiet:hover{color:var(--brand);border-bottom-color:var(--copper);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:500;
  line-height:1;
  white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  border:1px solid var(--brand);
  box-shadow:0 6px 18px rgba(47,84,104,.18);
}
.btn-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover);transform:translateY(-1px);box-shadow:0 10px 24px rgba(47,84,104,.22);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(47,84,104,.18);}
.btn-ghost{
  background:#fff;
  color:var(--brand);
  border:1px solid var(--brand);
}
.btn-ghost:hover{background:var(--brand-light);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn:disabled,.btn.is-disabled{opacity:.45;pointer-events:none;}

.menu-toggle{
  display:none;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  font-size:14px;
  color:var(--brand-dark);
  background:#fff;
}
.menu-toggle:hover{border-color:var(--brand);background:var(--brand-light);}

.header-nav{
  border-top:1px solid var(--line);
  background:#fff;
}
.chip-nav{
  display:flex;
  align-items:center;
  gap:10px;
  height:52px;
  overflow-x:auto;
  scrollbar-width:none;
}
.chip-nav::-webkit-scrollbar{display:none;}

.chip{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--sub);
  font-size:14px;
  white-space:nowrap;
  position:relative;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.chip:hover{background:#fff;color:var(--brand);border-color:#C3D3DA;}
.chip.is-active{
  background:var(--brand-light);
  color:var(--brand-dark);
  border-color:var(--brand-light);
  font-weight:600;
}
.chip.is-active::after{
  content:"";
  position:absolute;
  left:16px;
  right:16px;
  bottom:-9px;
  height:2px;
  background:var(--copper);
  border-radius:2px;
}
.chip-plain{
  border-color:transparent;
  background:transparent;
}

/* mobile drawer */
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:18px 24px 24px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-title{
  font-size:13px;
  color:var(--sub);
  letter-spacing:.08em;
  margin-bottom:10px;
}
.mobile-drawer .drawer-chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:18px;
}
.mobile-drawer .drawer-actions{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.mobile-drawer .drawer-actions .btn{width:100%;}

/* ---------- Hero ---------- */
.hero{
  background:#fff;
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
}
.hero-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--brand);
  letter-spacing:.1em;
  padding:6px 14px;
  border:1px solid #C9DCE4;
  border-radius:999px;
  background:#F3F8FA;
  margin-bottom:20px;
}
.hero-tag::before{
  content:"";
  width:16px;
  height:1px;
  background:var(--copper);
}
.hero h1{
  font-size:clamp(30px,3.6vw,46px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--brand-dark);
}
.hero-sub{
  margin-top:18px;
  font-size:17px;
  color:var(--brand);
  line-height:1.7;
}
.hero-text{
  margin-top:14px;
  font-size:15px;
  color:var(--sub);
  line-height:1.85;
  max-width:46em;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:4 / 3;
  background:var(--brand-light);
}
.hero-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.hero-figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.10) 0%,rgba(32,62,79,.16) 100%);
  pointer-events:none;
}

/* ---------- Section basics ---------- */
.section{padding:72px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(24px,2.4vw,32px);
  line-height:1.35;
  font-weight:700;
  color:var(--brand-dark);
  letter-spacing:.01em;
}
.section-head p{
  margin-top:10px;
  font-size:15px;
  color:var(--sub);
  max-width:56em;
}
.section-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--brand);
  white-space:nowrap;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
}
.section-link:hover{border-bottom-color:var(--copper);}
.section-link:hover .arrow{transform:translateX(3px);}
.arrow{display:inline-block;transition:transform var(--ease);}

/* ---------- Quick index bar ---------- */
.index-bar{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  padding:26px 28px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow);
  margin-top:-34px;
  position:relative;
  z-index:2;
}
.index-item{
  display:flex;
  gap:14px;
  align-items:flex-start;
}
.index-item + .index-item{
  border-left:1px solid var(--line);
  padding-left:24px;
}
.index-num{
  font-size:13px;
  color:var(--copper);
  font-weight:600;
  letter-spacing:.08em;
  padding-top:4px;
  flex:none;
}
.index-item h3{
  font-size:16px;
  font-weight:600;
  color:var(--brand-dark);
  margin-bottom:4px;
}
.index-item p{
  font-size:14px;
  color:var(--sub);
  line-height:1.7;
}

/* ---------- Editorial list ---------- */
.lead-entry{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:0;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:box-shadow var(--ease),transform var(--ease);
}
.lead-entry:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.lead-media{
  position:relative;
  overflow:hidden;
  background:var(--brand-light);
  min-height:280px;
}
.lead-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform var(--ease);
}
.lead-entry:hover .lead-media img{transform:scale(1.02);}
.lead-body{
  padding:36px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:14px;
}
.entry-meta{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--sub);
}
.chip-cat{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:12px;
  letter-spacing:.04em;
}
.chip-cat.copper{background:#F6EFE7;color:#8A6238;}
.dot{width:3px;height:3px;border-radius:50%;background:#B9C8CE;display:inline-block;}
.lead-body h3{
  font-size:clamp(20px,2vw,25px);
  line-height:1.45;
  font-weight:700;
  color:var(--brand-dark);
}
.lead-body p{
  font-size:15px;
  color:var(--sub);
  line-height:1.85;
}
.lead-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--brand);
  font-weight:500;
  margin-top:6px;
}
.lead-entry:hover .lead-more .arrow,
.entry-item:hover .entry-more .arrow{transform:translateX(3px);}

.entry-list{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
  margin-top:28px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.entry-item{
  display:grid;
  grid-template-columns:168px 1fr auto;
  gap:24px;
  align-items:center;
  padding:22px 26px;
  border-bottom:1px solid var(--line);
  transition:background-color var(--ease);
}
.entry-item:last-child{border-bottom:0;}
.entry-item:hover{background:#FAFCFD;}
.entry-thumb{
  border-radius:12px;
  overflow:hidden;
  aspect-ratio:16 / 10;
  background:var(--brand-light);
  border:1px solid var(--line);
}
.entry-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform var(--ease);
}
.entry-item:hover .entry-thumb img{transform:scale(1.03);}
.entry-main h3{
  font-size:19px;
  font-weight:600;
  color:var(--brand-dark);
  line-height:1.5;
  margin:6px 0 6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-main p{
  font-size:14px;
  color:var(--sub);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-more{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--brand);
  flex:none;
  transition:background-color var(--ease),border-color var(--ease),transform var(--ease);
}
.entry-item:hover .entry-more{background:var(--brand-light);border-color:#C9DCE4;}

/* ---------- Reading guide split ---------- */
.guide-grid{
  display:grid;
  grid-template-columns:1fr 1.1fr;
  gap:56px;
  align-items:center;
}
.guide-label{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.1em;
  color:var(--brand);
  margin-bottom:16px;
}
.guide-label::before{content:"";width:22px;height:1px;background:var(--copper);}
.guide-grid h2{
  font-size:clamp(24px,2.4vw,32px);
  line-height:1.4;
  font-weight:700;
  color:var(--brand-dark);
  margin-bottom:8px;
}
.guide-grid h3{
  font-size:20px;
  font-weight:600;
  color:var(--brand);
  margin-bottom:16px;
}
.guide-grid p{
  font-size:15px;
  color:var(--sub);
  line-height:1.9;
  margin-bottom:14px;
}
.guide-list{margin-top:8px;}
.guide-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--ink);
  padding:10px 0;
  border-bottom:1px dashed var(--line);
}
.guide-list li:last-child{border-bottom:0;}
.guide-list .tick{
  flex:none;
  width:20px;
  height:20px;
  border-radius:50%;
  border:1px solid #C9DCE4;
  background:var(--brand-light);
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:11px;
  margin-top:5px;
}
.guide-figure{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:4 / 3;
  background:var(--brand-light);
}
.guide-figure img{width:100%;height:100%;object-fit:cover;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-intro{
  text-align:left;
  font-size:15px;
  color:var(--sub);
  margin-bottom:24px;
}
.faq-item{
  border-bottom:1px solid var(--line);
  background:transparent;
  transition:background-color var(--ease);
}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 4px;
  font-size:18px;
  font-weight:500;
  color:var(--brand-dark);
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex:none;
  width:26px;
  height:26px;
  border:1px solid var(--line);
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
  font-size:15px;
  line-height:1;
  transition:background-color var(--ease),border-color var(--ease),color var(--ease);
}
.faq-item summary:hover .faq-icon{background:var(--brand-light);border-color:#C9DCE4;}
.faq-item[open]{background:#F9FBFC;}
.faq-item[open] .faq-icon{background:var(--brand);border-color:var(--brand);color:#fff;}
.faq-item[open] .faq-icon::before{content:"−";}
.faq-icon::before{content:"+";}
.faq-answer{
  padding:0 4px 24px;
  font-size:15.5px;
  color:var(--sub);
  line-height:1.9;
  max-width:64em;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-dark);
  color:#fff;
  border-radius:var(--radius-lg);
  padding:48px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.cta-band h2{
  font-size:clamp(24px,2.4vw,30px);
  font-weight:700;
  line-height:1.4;
  margin-bottom:12px;
}
.cta-band p{
  font-size:15px;
  line-height:1.9;
  color:rgba(255,255,255,.76);
}
.subscribe-form{display:flex;flex-direction:column;gap:12px;}
.subscribe-form label{
  font-size:13px;
  color:rgba(255,255,255,.72);
  letter-spacing:.06em;
}
.field-row{
  display:flex;
  gap:12px;
}
.field-row input[type="email"]{
  flex:1;
  height:48px;
  padding:0 16px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.08);
  color:#fff;
  font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.field-row input[type="email"]::placeholder{color:rgba(255,255,255,.48);}
.field-row input[type="email"]:focus{
  outline:none;
  border-color:#9FC3D2;
  background:rgba(255,255,255,.14);
  box-shadow:0 0 0 4px rgba(159,195,210,.22);
}
.field-row .btn-primary{
  background:#fff;
  color:var(--brand-dark);
  border-color:#fff;
  box-shadow:none;
}
.field-row .btn-primary:hover{background:#E9F1F4;border-color:#E9F1F4;color:var(--brand-dark);}
.form-hint{font-size:13px;color:rgba(255,255,255,.6);line-height:1.7;}
.form-error{font-size:13px;color:#F2C6B4;display:none;}
.form-error.is-visible{display:block;}
.cta-alt{
  margin-top:18px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  align-items:center;
}
.cta-alt a{
  font-size:14px;
  color:#fff;
  border-bottom:1px solid rgba(255,255,255,.42);
  padding-bottom:2px;
}
.cta-alt a:hover{border-bottom-color:var(--copper);}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--brand-dark);
  color:rgba(255,255,255,.76);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  margin-bottom:14px;
}
.footer-brand .brand-mark{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.22);
  color:#fff;
}
.footer-desc{
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.66);
  max-width:30em;
}
.footer-title{
  font-size:14px;
  color:#fff;
  letter-spacing:.08em;
  margin-bottom:14px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  width:fit-content;
  border-bottom:1px solid transparent;
}
.footer-links a:hover{color:#fff;border-bottom-color:var(--copper);}
.footer-note{
  font-size:13.5px;
  line-height:1.9;
  color:rgba(255,255,255,.6);
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.56);
}
.footer-bottom a{color:rgba(255,255,255,.72);border-bottom:1px solid rgba(255,255,255,.26);}
.footer-bottom a:hover{color:#fff;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-grid{gap:36px;}
  .section{padding:60px 0;}
  .lead-body{padding:28px;}
  .cta-band{padding:36px;gap:32px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
}

@media (max-width:900px){
  .header-actions .link-quiet{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-nav{display:none;}
  .hero{padding:40px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-figure{max-width:560px;}
  .index-bar{grid-template-columns:1fr;gap:18px;margin-top:-24px;padding:22px;}
  .index-item + .index-item{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:18px;}
  .lead-entry{grid-template-columns:1fr;}
  .lead-media{min-height:220px;aspect-ratio:16 / 9;}
  .lead-body{padding:24px;}
  .entry-item{grid-template-columns:132px 1fr;gap:18px;padding:18px;}
  .entry-more{display:none;}
  .guide-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:32px 24px;}
}

@media (max-width:640px){
  .wrap{padding:0 20px;}
  .header-top-inner{height:64px;gap:14px;}
  .brand{font-size:15px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;}
  .header-actions{gap:10px;}
  .header-actions .btn-sm{height:38px;padding:0 14px;font-size:13.5px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px;}
  .hero h1{font-size:clamp(28px,7vw,34px);}
  .hero-sub{font-size:16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .lead-body{padding:20px;}
  .entry-item{grid-template-columns:1fr;gap:14px;}
  .entry-thumb{aspect-ratio:16 / 9;}
  .entry-main h3{font-size:17px;}
  .faq-item summary{font-size:16px;padding:18px 2px;}
  .faq-answer{font-size:15px;padding:0 2px 20px;}
  .field-row{flex-direction:column;}
  .field-row .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .mobile-drawer{padding:16px 20px 22px;}
}

/* roulang page: category2 */
:root{
  --ink:#1C2B33;
  --ink-2:#5F7078;
  --brand:#2F5468;
  --brand-deep:#203E4F;
  --brand-soft:#E9F1F4;
  --copper:#A77B4F;
  --bg:#F6F7F5;
  --card:#FFFFFF;
  --line:#DCE5E8;
  --ok:#527A68;
  --r-lg:20px;
  --r-md:16px;
  --r-btn:10px;
  --shadow:0 12px 32px rgba(31,64,86,.08);
  --shadow-lift:0 16px 40px rgba(31,64,86,.12);
  --serif:"Songti SC","STSong",SimSun,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:6px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.header-top{height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand-deep)}
.brand-mark{display:inline-flex;color:var(--brand);transition:transform .18s}
.brand:hover .brand-mark{transform:translateY(-1px)}
.brand-text{font-family:var(--serif);font-size:19px;font-weight:700;letter-spacing:.01em;line-height:1.2}
.header-actions{display:flex;align-items:center;gap:18px}
.link-quiet{font-size:14px;color:var(--ink-2);transition:color .18s}
.link-quiet:hover{color:var(--brand)}
.header-chips{border-top:1px solid var(--line)}
.chips-row{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none}
.chips-row::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);background:transparent;
  font-size:14px;color:var(--ink-2);white-space:nowrap;
  transition:background .18s,color .18s,border-color .18s,box-shadow .18s;
}
.chip:hover{background:#fff;border-color:#C9D8DD;color:var(--brand)}
.chip.is-active{
  background:var(--brand-soft);border-color:#CFE0E6;color:var(--brand-deep);
  font-weight:600;box-shadow:inset 0 -2px 0 var(--copper);
}
.menu-btn{
  display:none;align-items:center;justify-content:center;height:38px;padding:0 14px;
  border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--brand);
  font-size:14px;font-weight:600;transition:background .18s,border-color .18s;
}
.menu-btn:hover{background:var(--brand-soft);border-color:#CFE0E6}
.mobile-menu{
  display:none;border-top:1px solid var(--line);background:#fff;padding:16px 24px 22px;
}
.mobile-menu.is-open{display:block}
.mobile-menu nav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.mobile-menu .mm-actions{display:grid;gap:10px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .18s,color .18s,transform .18s,box-shadow .18s,border-color .18s;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#244A5F;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow span.ar{transition:transform .18s}
.link-arrow:hover span.ar{transform:translateX(3px)}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line);padding:48px 0 64px}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(47,84,104,.08);pointer-events:none;
}
.page-hero::before{
  content:"";position:absolute;left:-80px;bottom:-180px;width:380px;height:380px;border-radius:50%;
  border:1px solid rgba(47,84,104,.06);pointer-events:none;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:26px}
.crumbs a{transition:color .18s}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#B9C7CD}
.crumbs .now{color:var(--brand-deep);font-weight:600}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.14em;
  color:var(--copper);font-weight:600;
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--copper)}
.hero-title{
  font-family:var(--serif);font-size:clamp(32px,4.2vw,52px);line-height:1.28;
  font-weight:700;letter-spacing:.01em;color:var(--brand-deep);margin:16px 0 0;
}
.hero-title .sep{color:var(--copper);padding:0 6px}
.hero-sub{font-size:17px;color:var(--ink-2);margin:18px 0 0;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.hero-meta div{font-size:13px;color:var(--ink-2)}
.hero-meta strong{display:block;font-size:16px;color:var(--brand-deep);font-weight:700;margin-bottom:2px}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);aspect-ratio:4/3;background:var(--brand-soft);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(255,255,255,.20),rgba(47,84,104,.14));
}

/* ---------- trust band ---------- */
.trust-band{background:var(--bg);border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0}
.trust-item{display:flex;gap:12px;align-items:flex-start}
.trust-icon{
  flex:0 0 38px;width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);color:var(--brand);
}
.trust-item h3{font-size:15px;font-weight:700;color:var(--brand-deep);margin:2px 0 2px}
.trust-item p{font-size:13px;color:var(--ink-2);margin:0;line-height:1.7}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:42px}
.h2{font-family:var(--serif);font-size:clamp(26px,3vw,34px);line-height:1.36;font-weight:700;color:var(--brand-deep);margin:14px 0 0}
.lead{font-size:16px;color:var(--ink-2);margin:14px 0 0}

/* ---------- steps ---------- */
.steps-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:52px;align-items:start}
.step-list{list-style:none;margin:0;padding:0;position:relative}
.step-list::before{
  content:"";position:absolute;left:23px;top:26px;bottom:26px;width:1px;background:var(--line);
}
.step-item{position:relative;display:flex;gap:22px;padding-bottom:38px}
.step-item:last-child{padding-bottom:0}
.step-num{
  flex:0 0 48px;width:48px;height:48px;border-radius:999px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  color:var(--brand);position:relative;z-index:1;box-shadow:0 6px 16px rgba(31,64,86,.06);
  transition:border-color .18s,color .18s,box-shadow .18s;
}
.step-item:hover .step-num{border-color:#CFE0E6;color:var(--brand-deep);box-shadow:var(--shadow)}
.step-body{flex:1 1 auto;min-width:0;padding-top:2px}
.step-body h3{font-size:21px;font-weight:700;color:var(--brand-deep);margin:0 0 8px;line-height:1.5}
.step-body p{font-size:15.5px;color:var(--ink-2);margin:0}
.step-points{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:7px}
.step-points li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);line-height:1.7}
.step-points li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
  background:var(--copper);opacity:.75;
}
.steps-aside{position:sticky;top:150px;display:grid;gap:20px}
.device-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;box-shadow:var(--shadow)}
.device-frame{aspect-ratio:4/3;border-radius:14px;overflow:hidden;background:var(--brand-soft);border:1px solid var(--line)}
.device-frame img{width:100%;height:100%;object-fit:cover}
.device-cap{font-size:13px;color:var(--ink-2);margin-top:14px;line-height:1.7}
.aside-note{
  background:var(--brand-soft);border:1px solid #D7E4E9;border-radius:var(--r-md);padding:18px 20px;
}
.aside-note strong{display:block;font-size:15px;color:var(--brand-deep);margin-bottom:6px}
.aside-note p{font-size:13.5px;color:#4E6670;margin:0;line-height:1.75}

/* ---------- checklist dark band ---------- */
.checklist-band{background:var(--brand-deep);color:#fff;padding:76px 0}
.checklist-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:52px;align-items:start}
.checklist-band .eyebrow{color:#D8B48A}
.checklist-band .eyebrow::before{background:#D8B48A}
.checklist-title{
  font-family:var(--serif);font-size:clamp(26px,2.8vw,32px);line-height:1.38;font-weight:700;
  color:#fff;margin:14px 0 0;
}
.checklist-desc{font-size:15px;color:#AFC4CD;margin:16px 0 0;max-width:30em}
.check-items{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check-item{
  display:flex;align-items:flex-start;gap:10px;padding:15px 16px;
  border:1px solid rgba(255,255,255,.16);border-radius:12px;background:rgba(255,255,255,.045);
  font-size:14.5px;color:#E3EDF1;line-height:1.65;transition:background .18s,border-color .18s;
}
.check-item:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.28)}
.check-tick{flex:0 0 18px;color:#9BC0B2;margin-top:3px}

/* ---------- compare table ---------- */
.table-scroll{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;box-shadow:var(--shadow);
}
.compare-table{width:100%;border-collapse:collapse;min-width:680px}
.compare-table thead th{
  background:var(--brand-soft);color:var(--brand-deep);font-size:14px;font-weight:700;
  text-align:left;padding:15px 20px;white-space:nowrap;
}
.compare-table tbody td{
  padding:17px 20px;border-top:1px solid var(--line);font-size:15px;color:var(--ink-2);
  vertical-align:top;line-height:1.75;
}
.compare-table tbody td:first-child{color:var(--brand-deep);font-weight:600}
.compare-table tbody tr:hover td{background:#FBFCFC}
.table-hint{font-size:13px;color:var(--ink-2);margin-top:14px}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px}
.faq-item{border-bottom:1px solid var(--line);transition:background .18s}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:22px 8px;font-size:18px;font-weight:600;color:var(--brand-deep);line-height:1.6;
  transition:color .18s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:400;color:var(--copper);
  line-height:1.3;transition:transform .18s;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{content:"−"}
.faq-item[open]{background:#F9FBFC}
.faq-body{padding:0 8px 24px;font-size:15.5px;color:var(--ink-2);max-width:780px;line-height:1.85}

/* ---------- cta ---------- */
.cta-band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:76px 0}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.cta-title{font-family:var(--serif);font-size:clamp(26px,2.8vw,32px);line-height:1.38;font-weight:700;color:var(--brand-deep);margin:14px 0 0}
.cta-desc{font-size:15.5px;color:var(--ink-2);margin:16px 0 0;max-width:32em}
.cta-points{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:9px}
.cta-points li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-2)}
.cta-points li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;
  background:var(--brand-soft);border:1px solid var(--copper);
}
.form-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:8px;font-weight:600}
.field input{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;font-size:15px;color:var(--ink);font-family:var(--sans);
  transition:border-color .18s,box-shadow .18s;
}
.field input::placeholder{color:#9FAFB6}
.field input:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,84,104,.12);
}
.form-hint{font-size:13px;color:var(--ink-2);margin:12px 0 0;line-height:1.7}
.form-note{font-size:12.5px;color:#87979E;margin:10px 0 0}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:#D8E5EA;padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
.footer-brand .brand-mark{color:#9FC0CD}
.footer-brand strong{font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.01em}
.footer-desc{font-size:14px;color:#A9C0C9;line-height:1.85;margin:0}
.footer-title{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:#A9C0C9;transition:color .18s,transform .18s;width:fit-content}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-note{font-size:13px;color:#9DB4BE;line-height:1.8;margin:0}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA8B3;
}
.footer-bottom a{color:#C9DBE2;transition:color .18s}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .header-actions .link-quiet{display:none}
  .menu-btn{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{aspect-ratio:16/10}
  .trust-grid{grid-template-columns:1fr 1fr;gap:22px}
  .steps-grid{grid-template-columns:1fr;gap:40px}
  .steps-aside{position:static}
  .checklist-grid{grid-template-columns:1fr;gap:36px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .wrap{padding:0 20px}
  .section{padding:56px 0}
  .page-hero{padding:32px 0 48px}
  .checklist-band,.cta-band{padding:56px 0}
  .site-footer{padding:52px 0 24px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .check-items{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:1fr;gap:18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .brand-text{font-size:17px}
  .step-body h3{font-size:19px}
  .faq-item summary{font-size:16.5px;padding:18px 4px}
  .faq-body{padding:0 4px 20px;font-size:15px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .header-top{height:64px}
  .header-actions{gap:10px}
  .btn-sm{height:34px;padding:0 12px;font-size:13px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-title{font-size:30px}
  .hero-meta{gap:14px}
  .hero-meta div{width:calc(50% - 7px)}
  .step-item{gap:16px}
  .step-num{flex:0 0 42px;width:42px;height:42px;font-size:14px}
  .step-list::before{left:20px}
  .form-card{padding:20px}
}

/* roulang page: category3 */
:root{
  --ink:#1C2B33;
  --muted:#5F7078;
  --primary:#2F5468;
  --primary-dark:#203E4F;
  --primary-hover:#244A5F;
  --primary-soft:#E9F1F4;
  --copper:#A77B4F;
  --bg:#F6F7F5;
  --surface:#FFFFFF;
  --line:#DCE5E8;
  --ok:#527A68;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 12px 32px rgba(31,64,86,.08);
  --shadow-hover:0 16px 40px rgba(31,64,86,.12);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-serif:"Songti SC","STSong","SimSun",serif;
  --ease:180ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:.01em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:6px}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}
.link-quiet{
  font-size:14px;color:var(--primary-dark);font-weight:600;
  padding:6px 4px;border-bottom:1px solid transparent;transition:color var(--ease),border-color var(--ease);
}
.link-quiet:hover{color:var(--primary);border-bottom-color:var(--copper)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);transition:color var(--ease);
}
.link-arrow:hover{color:var(--primary-dark)}
.link-arrow .arrow{transition:transform var(--ease)}
.link-arrow:hover .arrow{transform:translateX(3px)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;border:1px solid #d5e3e8;
  white-space:nowrap;
}
.tag-copper{background:#FBF5EE;border-color:#E9DCCB;color:#87603A}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;border-bottom:1px solid var(--line);
}
.header-top{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:0}
.brand-mark{color:var(--primary);display:inline-flex;flex:0 0 auto}
.brand-name{
  font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--primary-dark);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.header-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.menu-btn{
  display:none;align-items:center;gap:8px;height:40px;padding:0 14px;
  border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;color:var(--primary-dark);cursor:pointer;
  transition:background var(--ease),border-color var(--ease);
}
.menu-btn:hover{background:var(--primary-soft);border-color:#c9d8dd}
.header-nav{border-top:1px solid var(--line);background:#fff}
.nav-scroll{
  display:flex;align-items:center;gap:8px;
  padding:9px 0;overflow-x:auto;scrollbar-width:none;
}
.nav-scroll::-webkit-scrollbar{display:none}
.nav-chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:999px;border:1px solid transparent;background:transparent;
  color:var(--primary-dark);font-size:14px;font-weight:600;white-space:nowrap;
  transition:background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.nav-chip:hover{background:#fff;border-color:var(--line)}
.nav-chip.active{
  background:var(--primary-soft);color:var(--primary-dark);
  border-color:#d5e3e8;box-shadow:inset 0 -2px 0 var(--copper);
}
.drawer{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:18px 24px 22px;
}
.drawer.open{display:block}
.drawer-title{font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--muted);margin-bottom:10px}
.drawer-list{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;color:var(--primary-dark);background:#fff;
  transition:background var(--ease),border-color var(--ease);
}
.drawer-list a:hover{background:var(--primary-soft);border-color:#c9d8dd}
.drawer-list a.active{background:var(--primary-soft);box-shadow:inset 0 -2px 0 var(--copper)}
.drawer-actions{display:flex;flex-direction:column;gap:10px}
.drawer-actions .btn{width:100%}

/* ---------- 面包屑 ---------- */
.crumb{padding:20px 0 0;font-size:13px;color:var(--muted)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li:not(:last-child)::after{content:"/";color:#b9c7cd}
.crumb a{color:var(--primary);transition:color var(--ease)}
.crumb a:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:3px}
.crumb [aria-current="page"]{color:var(--muted)}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:#fff;border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;
  border:1px solid var(--primary);border-radius:50%;opacity:.06;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-40px;top:-40px;width:380px;height:380px;
  border:1px solid var(--primary);border-radius:50%;opacity:.05;pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:48px 0 60px;
}
.hero-kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--copper);
  margin-bottom:18px;
}
.hero-kicker::before{content:"";width:28px;height:1px;background:var(--copper);display:inline-block}
.hero h1{
  font-size:clamp(30px,3.9vw,50px);
  line-height:1.24;letter-spacing:.01em;color:var(--primary-dark);
}
.hero h1 .sep{color:var(--copper);font-weight:400;padding:0 .12em}
.hero-sub{
  margin-top:18px;font-size:16.5px;line-height:1.85;color:var(--muted);max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
  margin-top:36px;padding-top:26px;border-top:1px solid var(--line);
}
.hero-stat-label{font-size:12.5px;letter-spacing:.08em;color:var(--muted);font-weight:600}
.hero-stat-value{
  margin-top:6px;font-size:20px;font-weight:700;color:var(--primary-dark);
  font-variant-numeric:tabular-nums;letter-spacing:.01em;
}
.hero-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);aspect-ratio:4/3;background:var(--primary-soft);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;background:rgba(246,247,245,.14);pointer-events:none;
}
.hero-media-badge{
  position:absolute;left:20px;bottom:20px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.94);border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;color:var(--primary-dark);
  box-shadow:0 6px 18px rgba(31,64,86,.10);
}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--ok);display:inline-block}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0}
.section-tight{padding:56px 0}
.section-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(24px,2.6vw,32px);color:var(--primary-dark)}
.section-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:46em}
.section-head .head-link{flex:0 0 auto}

/* ---------- 筛选 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}
.filter-chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;color:var(--primary-dark);cursor:pointer;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease),color var(--ease);
}
.filter-chip:hover{background:var(--primary-soft);border-color:#c9d8dd}
.filter-chip.is-active{
  background:var(--primary-soft);border-color:#d5e3e8;color:var(--primary-dark);
  box-shadow:inset 0 -2px 0 var(--copper);
}

/* ---------- 时间线 ---------- */
.timeline{position:relative}
.tl-item{
  position:relative;padding-left:64px;padding-bottom:28px;
}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:18px;top:22px;bottom:0;width:1px;background:var(--line);
}
.tl-item:last-child::before{display:none}
.tl-dot{
  position:absolute;left:12px;top:16px;width:13px;height:13px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);box-shadow:0 0 0 4px rgba(47,84,104,.06);
}
.tl-item.is-latest .tl-dot{background:var(--copper);border-color:var(--copper);box-shadow:0 0 0 4px rgba(167,123,79,.12)}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#cbdae0}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px}
.tl-date{
  font-size:13px;font-weight:700;color:var(--primary-dark);
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
  padding:3px 10px;border:1px solid var(--line);border-radius:8px;background:#FAFCFC;
}
.tl-card h3{font-size:20px;line-height:1.5;color:var(--ink);margin-bottom:8px}
.tl-card p{font-size:14.8px;color:var(--muted);line-height:1.85;margin-bottom:14px}
.tl-item.is-hidden{display:none}

/* ---------- 更新方式说明 ---------- */
.note-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.note-list{display:flex;flex-direction:column;gap:0}
.note-row{
  display:flex;gap:16px;padding:22px 0;border-bottom:1px solid var(--line);
}
.note-row:first-child{padding-top:0}
.note-row:last-child{border-bottom:0;padding-bottom:0}
.note-num{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary-dark);
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.note-row h3{font-size:17.5px;margin-bottom:6px;color:var(--primary-dark)}
.note-row p{font-size:14.5px;color:var(--muted);line-height:1.85}
.note-media{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);aspect-ratio:16/11;background:var(--primary-soft);position:relative;
}
.note-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 时效确认条 ---------- */
.check-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
}
.check-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;transition:transform var(--ease),box-shadow var(--ease);
}
.check-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.check-icon{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid #d5e3e8;background:#FAFCFC;color:var(--primary);margin-bottom:14px;
}
.check-item h3{font-size:16.5px;margin-bottom:6px;color:var(--primary-dark)}
.check-item p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- 订阅 CTA ---------- */
.cta-block{
  background:var(--primary-soft);border:1px solid #d5e3e8;border-radius:var(--radius-lg);
  padding:48px;display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center;
}
.cta-block h2{font-size:clamp(24px,2.5vw,30px);color:var(--primary-dark);margin-bottom:12px}
.cta-block .cta-desc{font-size:15px;color:var(--muted);line-height:1.85;max-width:30em}
.cta-form{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:end}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field label{font-size:13px;font-weight:600;color:var(--primary-dark);letter-spacing:.02em}
.input{
  height:48px;width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0 14px;font-size:15px;font-family:inherit;color:var(--ink);background:#fff;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.input::placeholder{color:#9AAAB1}
.input:hover{border-color:#c9d8dd}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,84,104,.12)}
.cta-form .btn{height:48px}
.form-hint{grid-column:1/-1;font-size:13px;color:var(--muted);margin-top:2px}
.cta-alt{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:22px;padding-top:20px;border-top:1px solid #d5e3e8;
}
.cta-alt span{font-size:14px;color:var(--muted)}

/* ---------- Footer ---------- */
.site-footer{background:var(--primary-dark);color:#E8EFF2;padding:64px 0 28px;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
.footer-brand strong{font-size:17px;font-weight:700;letter-spacing:.01em}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(232,239,242,.78);max-width:30em}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.12em;color:rgba(232,239,242,.62);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14px;color:rgba(232,239,242,.86);transition:color var(--ease),transform var(--ease);
  width:fit-content;
}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-note{font-size:13.5px;line-height:1.85;color:rgba(232,239,242,.7)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:22px;font-size:13px;color:rgba(232,239,242,.62);
}
.footer-bottom a{color:rgba(232,239,242,.86);border-bottom:1px solid rgba(232,239,242,.3);transition:color var(--ease),border-color var(--ease)}
.footer-bottom a:hover{color:#fff;border-bottom-color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:36px 0 48px}
  .hero-media{aspect-ratio:16/10}
  .note-grid{grid-template-columns:1fr;gap:32px}
  .check-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-block{grid-template-columns:1fr;gap:28px;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .header-actions .link-quiet,.header-actions .btn-primary{display:none}
  .menu-btn{display:inline-flex}
  .section{padding:60px 0}
}
@media (max-width:767px){
  .wrap{padding:0 20px}
  .brand-name{font-size:16.5px}
  .hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-sub{font-size:15.5px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:12px 16px}
  .hero-stat-value{font-size:18px}
  .cta-block{padding:28px 22px}
  .cta-form{grid-template-columns:1fr}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section-head{margin-bottom:24px}
}
@media (max-width:520px){
  .tl-item{padding-left:40px}
  .tl-item::before{left:8px;top:20px}
  .tl-dot{left:2px;top:14px;width:12px;height:12px}
  .tl-card{padding:18px}
  .tl-card h3{font-size:18px}
  .check-strip{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .filter-bar{gap:6px}
  .filter-chip{height:32px;padding:0 13px;font-size:13.5px}
}

/* roulang page: category4 */
:root{
    --ink:#2F5468;
    --ink-deep:#203E4F;
    --ink-hover:#244A5F;
    --mist:#E9F1F4;
    --mist-soft:#F1F6F8;
    --copper:#A77B4F;
    --paper:#F6F7F5;
    --card:#FFFFFF;
    --text:#1C2B33;
    --text-2:#5F7078;
    --line:#DCE5E8;
    --ok:#527A68;
    --r-lg:20px;
    --r-md:16px;
    --r-sm:10px;
    --shadow:0 12px 32px rgba(31,64,86,.08);
    --shadow-lift:0 16px 40px rgba(31,64,86,.12);
    --dur:180ms;
    --h1:clamp(30px,4.4vw,52px);
    --h2:clamp(24px,2.8vw,34px);
    --h3:21px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--text);
    background:var(--paper);
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;object-fit:cover}
  a{color:inherit;text-decoration:none}
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
  ul,ol{padding:0;list-style:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  input{font:inherit}
  a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
    outline:2px solid var(--copper);
    outline-offset:3px;
    border-radius:6px;
  }

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  .section{padding:clamp(48px,7vw,92px) 0}
  .section-tight{padding:clamp(36px,5vw,64px) 0}
  .section-alt{background:var(--mist-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

  /* ---------- header ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
  .topbar-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
  .brand{display:flex;align-items:center;gap:12px;min-width:0}
  .brand-mark{display:inline-flex;color:var(--ink);flex:0 0 auto}
  .brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
  .brand-text strong{font-size:18px;font-weight:700;color:var(--ink-deep);letter-spacing:.01em;white-space:nowrap}
  .brand-text em{font-style:normal;font-size:12px;color:var(--text-2);letter-spacing:.06em}
  .topbar-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
  .link-quiet{font-size:14px;color:var(--text-2);transition:color var(--dur) ease}
  .link-quiet:hover{color:var(--ink)}
  .menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);align-items:center;justify-content:center}
  .menu-toggle span{display:block;width:18px;height:1.6px;background:var(--ink-deep);position:relative}
  .menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--ink-deep)}
  .menu-toggle span::before{top:-6px}
  .menu-toggle span::after{top:6px}

  .chipline{border-top:1px solid var(--line);background:#fff}
  .chipline-inner{height:52px;display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:thin}
  .chipline-inner::-webkit-scrollbar{height:3px}
  .chipline-inner::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
  .chip{
    display:inline-flex;align-items:center;height:34px;padding:0 16px;white-space:nowrap;
    font-size:14px;color:var(--text-2);background:transparent;border:1px solid var(--line);
    border-radius:999px;transition:background var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease,box-shadow var(--dur) ease;
  }
  .chip:hover{background:#fff;color:var(--ink);border-color:#C9D8DE;box-shadow:0 6px 16px rgba(31,64,86,.06)}
  .chip:active{transform:translateY(1px)}
  .chip.is-active{
    background:var(--mist);color:var(--ink);border-color:transparent;font-weight:600;
    box-shadow:inset 0 -2px 0 var(--copper);
  }

  .mobile-drawer{display:none;background:#fff;border-top:1px solid var(--line);padding:16px 0 22px}
  .mobile-drawer.is-open{display:block}
  .mobile-drawer .drawer-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
  .mobile-drawer .btn{width:100%;justify-content:center}
  .drawer-note{font-size:13px;color:var(--text-2);margin-top:12px}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-sm);
    font-size:15px;font-weight:600;letter-spacing:.02em;transition:background var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease,transform var(--dur) ease,box-shadow var(--dur) ease;
  }
  .btn-primary{background:var(--ink);color:#fff;border:1px solid var(--ink);box-shadow:0 10px 24px rgba(47,84,104,.16)}
  .btn-primary:hover{background:var(--ink-hover);border-color:var(--ink-hover);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}
  .btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--ink)}
  .btn-ghost:hover{background:var(--mist);transform:translateY(-1px)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-light{background:#fff;color:var(--ink-deep);border:1px solid #fff}
  .btn-light:hover{background:var(--mist);transform:translateY(-1px)}
  .btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none}
  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink)}
  .text-link .arrow{transition:transform var(--dur) ease}
  .text-link:hover .arrow{transform:translateX(3px)}
  .text-link:active .arrow{transform:translateX(1px)}

  /* ---------- hero ---------- */
  .page-hero{padding:clamp(40px,6vw,76px) 0 clamp(32px,4vw,52px);background:#fff;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
  .page-hero::before{
    content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;border-radius:50%;
    border:1px solid var(--line);opacity:.7;pointer-events:none;
  }
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,4vw,56px);align-items:center;position:relative;z-index:1}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--copper);letter-spacing:.08em;
    padding:6px 14px;border:1px solid rgba(167,123,79,.35);border-radius:999px;background:rgba(167,123,79,.05);margin-bottom:20px;
  }
  .eyebrow::before{content:"";width:16px;height:1px;background:var(--copper)}
  h1{font-family:"Songti SC","STSong","SimSun",serif;font-size:var(--h1);line-height:1.24;color:var(--ink-deep);letter-spacing:.01em;font-weight:700}
  .hero-sub{margin-top:18px;font-size:clamp(16px,1.4vw,18px);color:var(--text-2);max-width:560px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;font-size:13px;color:var(--text-2)}
  .hero-meta li{display:flex;align-items:center;gap:8px}
  .hero-meta li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--copper);opacity:.75}
  .hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--mist)}
  .hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
  .hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(246,247,245,.10),rgba(32,62,79,.20));pointer-events:none}
  .hero-stat{
    position:absolute;left:18px;bottom:18px;z-index:2;background:rgba(255,255,255,.95);
    border:1px solid var(--line);border-radius:var(--r-md);padding:14px 18px;box-shadow:var(--shadow);max-width:calc(100% - 36px);
  }
  .hero-stat strong{display:block;font-size:20px;color:var(--ink-deep);line-height:1.3}
  .hero-stat span{font-size:13px;color:var(--text-2)}

  /* ---------- section head ---------- */
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:clamp(24px,3vw,38px);flex-wrap:wrap}
  .section-head h2{font-family:"Songti SC","STSong","SimSun",serif;font-size:var(--h2);line-height:1.32;color:var(--ink-deep);font-weight:700}
  .section-desc{margin-top:10px;font-size:15px;color:var(--text-2);max-width:680px}
  .rule-line{width:44px;height:2px;background:var(--copper);opacity:.8;margin-bottom:14px}

  /* ---------- topic cards ---------- */
  .topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .topic-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;
    box-shadow:var(--shadow);transition:box-shadow var(--dur) ease,transform var(--dur) ease,border-color var(--dur) ease;
  }
  .topic-card:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px);border-color:#CBDDE4}
  .topic-tag{
    display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--ink);background:var(--mist);
    border-radius:999px;padding:4px 12px;margin-bottom:16px;
  }
  .topic-card h3{font-size:var(--h3);color:var(--ink-deep);line-height:1.4;font-weight:700}
  .topic-card > p{margin-top:10px;font-size:15px;color:var(--text-2)}
  .topic-list{margin-top:18px;border-top:1px solid var(--line);padding-top:8px}
  .topic-list li + li{border-top:1px dashed #E6EDF0}
  .topic-list a{
    display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 2px;
    font-size:15px;color:var(--text);transition:color var(--dur) ease,transform var(--dur) ease;
  }
  .topic-list a span.dot{width:5px;height:5px;border-radius:50%;background:var(--copper);opacity:.7;flex:0 0 auto}
  .topic-list a .txt{flex:1 1 auto}
  .topic-list a .arrow{color:var(--ink);transition:transform var(--dur) ease}
  .topic-list a:hover{color:var(--ink)}
  .topic-list a:hover .arrow{transform:translateX(3px)}

  /* ---------- steps ---------- */
  .steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;counter-reset:step}
  .step{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:26px 24px 24px;
    transition:box-shadow var(--dur) ease,transform var(--dur) ease;
  }
  .step:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px)}
  .step::before{
    counter-increment:step;content:"0" counter(step);
    display:inline-flex;align-items:center;justify-content:center;
    width:38px;height:38px;border-radius:12px;background:var(--mist);color:var(--ink);
    font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:16px;
  }
  .step h3{font-size:18px;color:var(--ink-deep);font-weight:700}
  .step p{margin-top:10px;font-size:15px;color:var(--text-2)}
  .step-line{height:1px;background:var(--line);margin:0 0 0 0}
  .check-list{margin-top:22px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 24px}
  .check-list li{display:flex;gap:10px;font-size:15px;color:var(--text)}
  .check-list li::before{
    content:"";flex:0 0 16px;width:16px;height:16px;margin-top:5px;border-radius:50%;
    border:1px solid var(--ok);position:relative;
    background:
      radial-gradient(circle at 50% 50%, var(--ok) 0 2.5px, transparent 3px);
  }

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:900px;margin:0 auto}
  .faq{border-top:1px solid var(--line);margin-top:8px}
  .faq-item{border-bottom:1px solid var(--line);transition:background var(--dur) ease}
  .faq-item[open]{background:#F9FBFC}
  .faq-item summary{
    list-style:none;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
    padding:22px 18px 22px 4px;cursor:pointer;font-size:18px;font-weight:600;color:var(--ink-deep);line-height:1.6;
    transition:color var(--dur) ease;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--ink)}
  .faq-icon{
    position:relative;flex:0 0 24px;width:24px;height:24px;margin-top:3px;border:1px solid #C9D8DE;border-radius:50%;
    background:#fff;transition:border-color var(--dur) ease,background var(--dur) ease;
  }
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink);transform:translate(-50%,-50%);transition:transform var(--dur) ease,opacity var(--dur) ease}
  .faq-icon::before{width:10px;height:1.5px}
  .faq-icon::after{width:1.5px;height:10px}
  .faq-item[open] .faq-icon{border-color:var(--copper);background:rgba(167,123,79,.06)}
  .faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
  .faq-body{padding:0 46px 24px 4px;font-size:16px;color:var(--text);line-height:1.85}
  .faq-body p + p{margin-top:12px}
  .faq-body .note{margin-top:14px;font-size:14px;color:var(--text-2);border-left:2px solid var(--line);padding-left:14px}

  /* ---------- entry / form ---------- */
  .entry-section{background:var(--ink-deep);border-radius:var(--r-lg);padding:clamp(28px,4vw,52px);color:#fff;position:relative;overflow:hidden}
  .entry-section::after{
    content:"";position:absolute;right:-90px;bottom:-120px;width:320px;height:320px;border-radius:50%;
    border:1px solid rgba(255,255,255,.14);pointer-events:none;
  }
  .entry-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);align-items:center;position:relative;z-index:1}
  .entry-grid h2{font-family:"Songti SC","STSong","SimSun",serif;font-size:var(--h2);line-height:1.34;color:#fff}
  .entry-grid .entry-desc{margin-top:14px;color:rgba(255,255,255,.78);font-size:15px;max-width:420px}
  .entry-tip{margin-top:20px;font-size:13px;color:rgba(255,255,255,.62)}
  .form-row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}
  .field{flex:1 1 220px;min-width:0}
  .field label{display:block;font-size:13px;color:rgba(255,255,255,.8);margin-bottom:8px;letter-spacing:.04em}
  .field input{
    width:100%;height:48px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.24);
    background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:15px;
    transition:border-color var(--dur) ease,box-shadow var(--dur) ease,background var(--dur) ease;
  }
  .field input::placeholder{color:rgba(255,255,255,.46)}
  .field input:focus{
    outline:none;border-color:#fff;background:rgba(255,255,255,.12);
    box-shadow:0 0 0 3px rgba(255,255,255,.14);
  }
  .form-hint{width:100%;font-size:13px;color:rgba(255,255,255,.6);margin-top:12px;line-height:1.7}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink-deep);color:rgba(255,255,255,.76);margin-top:clamp(48px,7vw,92px);padding:clamp(40px,5vw,64px) 0 28px}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:clamp(20px,3vw,40px)}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
  .footer-brand .brand-mark{color:#fff}
  .footer-brand strong{font-size:17px;letter-spacing:.01em}
  .footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px}
  .footer-title{font-size:14px;color:#fff;font-weight:600;letter-spacing:.06em;margin-bottom:14px}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{font-size:14px;color:rgba(255,255,255,.7);transition:color var(--dur) ease,transform var(--dur) ease;width:fit-content}
  .footer-links a:hover{color:#fff;transform:translateX(2px)}
  .footer-note{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.62)}
  .footer-bottom{
    margin-top:clamp(28px,4vw,44px);padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
    display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.56);
  }
  .footer-bottom a{color:rgba(255,255,255,.72);text-decoration:underline;text-underline-offset:3px}
  .footer-bottom a:hover{color:#fff}

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    .hero-grid{grid-template-columns:1fr;gap:32px}
    .hero-media{order:-1}
    .hero-media img{aspect-ratio:16/10}
    .entry-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
    .steps{grid-template-columns:1fr}
    .check-list{grid-template-columns:1fr}
  }
  @media (max-width:860px){
    .topic-grid{grid-template-columns:1fr}
    .faq-body{padding-right:12px}
  }
  @media (max-width:767px){
    .wrap{padding:0 20px}
    .brand-text em{display:none}
    .link-quiet{display:none}
    .menu-toggle{display:inline-flex}
    .topbar-actions .btn-primary{display:none}
    .topbar-inner{height:66px}
    .chipline-inner{height:50px}
    .hero-actions .btn{flex:1 1 100%;justify-content:center}
    .hero-stat{position:static;margin:14px;max-width:none}
    .hero-media::after{display:none}
    .faq-item summary{font-size:16.5px;padding:18px 12px 18px 2px}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .form-row{flex-direction:column;align-items:stretch}
    .form-row .btn{width:100%;justify-content:center}
  }
  @media (max-width:520px){
    body{font-size:15.5px}
    .brand-text strong{font-size:16px}
    .topic-card{padding:20px}
    .entry-section{border-radius:16px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
  }