/* roulang page: index */
:root{
  --ink:#1E5B54;
  --ink-deep:#134440;
  --ink-soft:#E6EFEC;
  --sand:#CB6237;
  --sand-soft:#FBEDE5;
  --text:#16201E;
  --text-2:#46534F;
  --text-3:#6E7C78;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --line:#E3E6E1;
  --footer:#10201D;
  --sidebar-w:252px;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,32,29,.06);
  --sh-2:0 10px 24px -14px rgba(16,32,29,.24);
  --sh-3:0 24px 48px -28px rgba(16,32,29,.36);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--sand);}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:0;}
h1,h2{font-family:var(--serif);line-height:1.25;}
h1{font-size:clamp(30px,4vw,46px);}
h2{font-size:clamp(22px,2.6vw,30px);}
h3{font-size:18px;line-height:1.5;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--sand);
  outline-offset:2px;
}
/* Foundation 默认色覆盖 */
.button,.button.primary,button.button{
  background:var(--ink);
  color:#fff;
  border-radius:var(--r-btn);
  font-family:var(--sans);
  font-weight:600;
  letter-spacing:0;
}
.button:hover,button.button:hover{background:var(--ink-deep);}
.foundation-off,.reveal{}
::selection{background:var(--sand-soft);color:var(--ink-deep);}

/* ===== App Shell ===== */
.shell{min-height:100vh;}
.sidebar{
  position:fixed;
  top:0;left:0;
  width:var(--sidebar-w);
  height:100vh;
  background:var(--card);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  z-index:60;
  transition:width .22s ease-out, box-shadow .22s ease-out;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:26px 22px 22px;
  border-bottom:1px solid var(--line);
}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;
  border-radius:9px;
  background:linear-gradient(140deg,var(--ink),var(--ink-deep));
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:15px;font-weight:700;
  box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{font-family:var(--serif);font-size:16px;font-weight:700;color:var(--ink-deep);white-space:nowrap;}
.brand-sub{font-size:12px;color:var(--text-3);white-space:nowrap;}
.side-nav{padding:18px 0;flex:1 1 auto;overflow-y:auto;}
.side-nav-title{
  font-size:12px;color:var(--text-3);letter-spacing:.06em;
  padding:0 22px 10px;
}
.side-nav li a{
  position:relative;
  display:flex;align-items:center;gap:10px;
  padding:12px 22px;
  font-size:15px;
  color:var(--text-2);
  border-left:3px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.side-nav li a i{width:18px;text-align:center;font-size:14px;color:var(--text-3);transition:color .18s ease-out;}
.side-nav li a:hover{background:var(--paper);color:var(--ink);}
.side-nav li a:hover i{color:var(--sand);}
.side-nav li a.active{
  background:var(--ink-soft);
  border-left-color:var(--ink);
  color:var(--ink-deep);
  font-weight:600;
}
.side-nav li a.active i{color:var(--ink);}
.side-foot{
  padding:20px 22px 24px;
  border-top:1px solid var(--line);
}
.side-foot p{font-size:12.5px;color:var(--text-3);line-height:1.7;}
.side-search{margin-top:14px;position:relative;}
.side-search input{
  width:100%;height:46px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--paper);
  padding:0 42px 0 14px;
  color:var(--text);
  font-size:14px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.side-search input::placeholder{color:var(--text-3);}
.side-search input:focus{
  border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(30,91,84,.12);
  outline:none;
}
.side-search button{
  position:absolute;right:6px;top:6px;
  width:34px;height:34px;border-radius:8px;
  color:var(--ink);display:flex;align-items:center;justify-content:center;
  transition:background .18s ease-out;
}
.side-search button:hover{background:var(--ink-soft);}

.main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.wrap{
  width:100%;
  max-width:1180px;
  padding-left:clamp(20px,4vw,56px);
  padding-right:clamp(20px,4vw,56px);
  margin:0 auto;
}
.section{padding-top:clamp(56px,7vw,96px);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:32px;flex-wrap:wrap;
}
.section-head .eyebrow{
  font-size:12.5px;color:var(--sand);
  letter-spacing:.08em;margin-bottom:8px;
  font-weight:600;
}
.section-head p.lead{
  margin-top:10px;font-size:14.5px;color:var(--text-2);max-width:640px;
}
.link-more{
  font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;
  border-bottom:2px solid transparent;
  padding-bottom:2px;
  transition:border-color .2s ease-out,color .2s ease-out,gap .2s ease-out;
}
.link-more:hover{border-color:var(--sand);gap:10px;}
.rule{
  height:1px;margin-top:clamp(40px,5vw,64px);
  background:var(--line);
  position:relative;
}
.rule::after{
  content:"";position:absolute;left:0;top:-3px;width:64px;height:7px;
  background:
    radial-gradient(circle at 6px 3.5px,var(--ink-soft) 3px,transparent 3.5px),
    radial-gradient(circle at 26px 3.5px,var(--ink-soft) 3px,transparent 3.5px),
    radial-gradient(circle at 46px 3.5px,var(--ink-soft) 3px,transparent 3.5px);
}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:clamp(360px,52vh,520px);
  display:flex;align-items:flex-end;
  border-radius:0 0 var(--r-lg) var(--r-lg);
  overflow:hidden;
  background-color:#134440;
  background-image:
    linear-gradient(180deg,rgba(30,91,84,.72),rgba(30,91,84,.32)),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh-2);
}
.hero-inner{
  position:relative;z-index:2;
  padding:clamp(32px,5vw,64px) clamp(24px,4vw,56px);
  max-width:820px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.32);
  color:#fff;font-size:12.5px;
  padding:6px 14px;border-radius:999px;
  backdrop-filter:blur(2px);
  margin-bottom:18px;
}
.hero h1{
  color:#fff;
  text-shadow:0 1px 1px rgba(0,0,0,.2);
  max-width:640px;
}
.hero-sub{
  margin-top:16px;
  color:rgba(255,255,255,.88);
  font-size:clamp(15px,1.6vw,18px);
  line-height:1.7;
  max-width:600px;
}
.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;}
.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;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.6);}
.btn-ghost:hover{background:var(--ink-soft);color:var(--ink-deep);border-color:var(--ink-soft);}
.btn-outline{background:transparent;color:var(--ink);border:1px solid var(--ink);}
.btn-outline:hover{background:var(--ink-soft);}
.btn-light{background:#fff;color:var(--ink-deep);}
.btn-light:hover{background:var(--ink-soft);color:var(--ink-deep);transform:translateY(-1px);}
.btn-line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.7);}
.btn-line:hover{background:rgba(255,255,255,.14);color:#fff;}
.hero-stats{
  position:absolute;right:clamp(20px,4vw,56px);bottom:clamp(24px,4vw,44px);
  z-index:2;
  display:flex;align-items:center;
  background:rgba(16,32,29,.42);
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-lg);
  padding:14px 22px;
  backdrop-filter:blur(3px);
}
.hero-stats .stat{padding:0 18px;text-align:center;}
.hero-stats .stat:first-child{padding-left:0;}
.hero-stats .stat:last-child{padding-right:0;}
.hero-stats .stat + .stat{border-left:1px solid rgba(255,255,255,.28);}
.hero-stats .num{
  font-family:var(--serif);font-size:22px;color:#fff;font-weight:700;line-height:1.2;
}
.hero-stats .lab{font-size:12px;color:rgba(255,255,255,.78);white-space:nowrap;}

/* ===== 合集目录 ===== */
.toc-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  column-gap:48px;
}
.toc-item{
  display:flex;align-items:flex-start;gap:16px;
  min-height:60px;
  padding:16px 4px;
  border-bottom:1px solid var(--line);
  transition:transform .18s ease-out;
}
.toc-item:hover{transform:translateX(4px);}
.toc-item .no{
  font-family:var(--serif);font-size:22px;color:var(--ink);font-weight:700;
  line-height:1.2;flex:0 0 42px;
  transition:color .18s ease-out;
}
.toc-item:hover .no{color:var(--sand);}
.toc-body{flex:1 1 auto;min-width:0;}
.toc-body strong{display:block;font-size:17px;color:var(--text);transition:color .18s ease-out;}
.toc-item:hover .toc-body strong{color:var(--ink);}
.toc-body span{display:block;font-size:14px;color:var(--text-3);margin-top:2px;}
.toc-item .arrow{color:var(--text-3);font-size:14px;margin-top:6px;transition:color .18s ease-out,transform .18s ease-out;}
.toc-item:hover .arrow{color:var(--sand);transform:translateX(3px);}

/* ===== 精选条目 ===== */
.pick-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,91,84,.3);}
.card-cover{position:relative;aspect-ratio:16/10;background:var(--ink-soft);overflow:hidden;}
.card-cover img{width:100%;height:100%;object-fit:cover;border:1px solid var(--line);border-radius:0;}
.pill{
  display:inline-block;
  font-size:12px;font-weight:600;
  color:var(--ink-deep);
  background:var(--ink-soft);
  border-radius:999px;
  padding:4px 12px;
  line-height:1.5;
}
.pill.on-cover{position:absolute;top:14px;right:14px;background:rgba(255,255,255,.92);}
.pill.sand{background:var(--sand-soft);color:#8E3F1F;}
.card-body{padding:22px 24px 24px;}
.card-body h3{font-size:18px;margin-bottom:10px;transition:color .18s ease-out;}
.card:hover .card-body h3{color:var(--ink);}
.card-body p{font-size:14px;line-height:1.75;color:var(--text-2);}
.card-meta{
  margin-top:16px;padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.card-meta a{font-weight:600;font-size:13px;}
.pick-main{grid-column:span 6;}
.pick-main .card{height:100%;display:flex;flex-direction:column;}
.pick-main .card-body{flex:1 1 auto;}
.pick-mini{grid-column:span 2;}
.pick-mini .card{height:100%;}
.pick-mini .card-body{padding:20px;}
.pick-mini .card-body h3{font-size:16px;}

/* ===== 最新信息 ===== */
.latest-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{display:flex;flex-direction:column;height:100%;}
.post-card .card-body{flex:1 1 auto;display:flex;flex-direction:column;}
.post-card h3{
  font-size:17px;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .excerpt{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .card-meta{margin-top:auto;}
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  background:var(--card);
  padding:48px 24px;
  text-align:center;
}
.empty-state .icon{
  width:56px;height:56px;margin:0 auto 16px;
  border-radius:16px;background:var(--ink-soft);
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);font-size:22px;
}
.empty-state p{color:var(--text-3);font-size:15px;margin-bottom:14px;}

/* ===== 相关推荐 ===== */
.rail{
  display:flex;gap:24px;
  overflow-x:auto;
  padding-bottom:18px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.rail .card{
  flex:0 0 280px;
  scroll-snap-align:start;
  display:flex;flex-direction:column;
}
.rail .card-cover{aspect-ratio:16/10;}
.rail .card-body{padding:18px 20px 20px;}
.rail .card-body h3{font-size:16px;}
.rail .card-body p{font-size:13.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ===== CTA 条带 ===== */
.cta-band{
  margin-top:clamp(56px,7vw,96px);
  background:linear-gradient(120deg,var(--ink),var(--ink-deep));
  border-radius:var(--r-lg);
  padding:clamp(28px,4vw,48px);
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  flex-wrap:wrap;
  box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin-top:10px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ===== FAQ ===== */
.faq-list{border-top:1px solid var(--ink);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:16px 4px;
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary h3{font-size:17px;font-weight:700;color:var(--text);transition:color .18s ease-out;}
.faq-item summary:hover h3{color:var(--ink);}
.faq-item .sign{
  flex:0 0 26px;width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  color:var(--sand);font-size:18px;line-height:1;
  transition:transform .2s ease-out;
}
.faq-item[open] .sign{transform:rotate(45deg);}
.faq-item .answer{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:820px;}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:clamp(56px,7vw,96px);
  background:var(--footer);
  color:rgba(255,255,255,.85);
  padding:clamp(40px,5vw,64px) 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.site-footer h4{font-size:13px;color:rgba(255,255,255,.7);margin-bottom:16px;font-weight:600;letter-spacing:.04em;}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul li a{font-size:14px;color:rgba(255,255,255,.85);}
.site-footer ul li a:hover{color:#BFE3DA;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,#2C7A70,#1E5B54);}
.footer-brand span{font-family:var(--serif);font-size:17px;color:#fff;font-weight:700;}
.site-footer .footer-brand + p{font-size:14px;color:rgba(255,255,255,.7);max-width:340px;}
.qr{
  width:96px;height:96px;border-radius:12px;
  border:1px solid rgba(255,255,255,.24);
  display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.7);font-size:12px;text-align:center;
  margin-top:16px;
  background:rgba(255,255,255,.05);
}
.copyright{
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.copyright a{color:rgba(255,255,255,.75);}
.copyright a:hover{color:#BFE3DA;}

/* ===== 移动端顶部栏与抽屉 ===== */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:62px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  z-index:70;
  align-items:center;justify-content:space-between;
  padding:0 18px;
  backdrop-filter:blur(6px);
}
.topbar .brand{padding:0;border:0;}
.menu-btn{
  width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);font-size:17px;
  transition:background .18s ease-out;
}
.menu-btn:hover{background:var(--ink-soft);}
.drawer-mask{
  display:none;position:fixed;inset:0;
  background:rgba(16,32,29,.4);
  z-index:80;opacity:0;transition:opacity .22s ease-out;
}
.drawer-mask.show{display:block;opacity:1;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;
  background:#fff;z-index:90;
  transform:translateX(102%);
  transition:transform .24s ease-out;
  display:flex;flex-direction:column;
  overflow-y:auto;
  box-shadow:var(--sh-3);
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px;border-bottom:1px solid var(--line);
}
.drawer-head .brand{padding:0;border:0;}
.drawer-nav{padding:14px 0;flex:1 1 auto;}
.drawer-nav p{font-size:12px;color:var(--text-3);padding:10px 18px 6px;letter-spacing:.06em;}
.drawer-nav a{
  display:block;padding:12px 18px;font-size:15px;color:var(--text-2);
  border-left:3px solid transparent;
}
.drawer-nav a:hover{background:var(--paper);color:var(--ink);}
.drawer-nav a.active{background:var(--ink-soft);border-left-color:var(--ink);color:var(--ink-deep);font-weight:600;}
.drawer-foot{padding:18px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);}

/* ===== 响应式 ===== */
@media (max-width:1279px) and (min-width:1024px){
  .sidebar{width:88px;overflow:hidden;}
  .sidebar:hover{width:var(--sidebar-w);box-shadow:var(--sh-3);}
  .sidebar:hover .brand-text,
  .sidebar:hover .side-nav-title,
  .sidebar:hover .nav-label,
  .sidebar:hover .side-foot{opacity:1;visibility:visible;}
  .sidebar .brand-text,
  .sidebar .side-nav-title,
  .sidebar .nav-label,
  .sidebar .side-foot{opacity:0;visibility:hidden;transition:opacity .18s ease-out;}
  .main{margin-left:88px;}
  .side-nav li a{justify-content:center;padding:14px 0;}
  .side-nav li a i{font-size:16px;}
  .brand{justify-content:center;padding:22px 0;}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  .main{margin-left:0;padding-top:62px;}
  .hero{border-radius:0;}
  .hero-stats{position:static;margin:26px clamp(24px,4vw,56px) 32px;background:rgba(16,32,29,.45);}
  .hero{flex-direction:column;align-items:stretch;justify-content:flex-end;}
  .pick-main{grid-column:span 12;}
  .pick-mini{grid-column:span 4;}
  .latest-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .hero{min-height:60vh;}
  .hero-cta .btn{width:100%;}
  .hero-stats{
    flex-wrap:wrap;gap:12px 0;justify-content:center;
    border-radius:var(--r-card);
  }
  .hero-stats .stat{padding:0 14px;}
  .hero-stats .stat + .stat{border-left:1px solid rgba(255,255,255,.28);}
  .toc-grid{grid-template-columns:1fr;}
  .pick-mini{grid-column:span 12;}
  .latest-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .copyright{flex-direction:column;align-items:flex-start;}
  .rail .card{flex:0 0 82%;}
}
@media (max-width:520px){
  .wrap{padding-left:18px;padding-right:18px;}
  .hero-inner{padding:28px 18px;}
  .hero-stats{margin-left:18px;margin-right:18px;padding:12px 14px;}
  .hero-stats .num{font-size:19px;}
  .card-body{padding:18px;}
  .section-head{margin-bottom:24px;}
}

/* roulang page: article */
:root{
  --ink:#16201E;
  --ink-2:#46534F;
  --ink-3:#6E7C78;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --line:#E3E6E1;
  --brand:#1E5B54;
  --brand-deep:#134440;
  --brand-soft:#E6EFEC;
  --accent:#CB6237;
  --accent-soft:#FBEDE5;
  --footer:#10201D;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,32,29,.06);
  --sh-2:0 10px 24px -14px rgba(16,32,29,.24);
  --sh-3:0 24px 48px -28px rgba(16,32,29,.36);
  --sidebar-w:252px;
  --font-sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{border:1px solid var(--line);background:var(--brand-soft);max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;}
ul,ol{margin:0;padding:0;}
p{margin:0;}

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

.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 32px;}

/* ---------- 布局骨架 ---------- */
.shell{display:flex;min-height:100vh;}
.main-area{flex:1 1 auto;min-width:0;margin-left:var(--sidebar-w);display:flex;flex-direction:column;}
.page-main{flex:1 1 auto;padding:34px 0 0;}

/* ---------- 侧栏导航 ---------- */
.side-shell{
  position:fixed;
  top:0;left:0;
  width:var(--sidebar-w);
  height:100vh;
  background:var(--card);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:22px 16px 20px;
  overflow-y:auto;
  z-index:40;
}
.side-brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:4px 6px 18px;
  border-bottom:1px solid var(--line);
  margin-bottom:18px;
}
.brand-mark{
  width:34px;height:34px;
  flex:0 0 auto;
  border-radius:10px;
  background:linear-gradient(150deg,var(--brand),var(--brand-deep));
  color:#fff;
  font-family:var(--font-serif);
  font-size:17px;
  line-height:1;
  display:grid;
  place-items:center;
}
.brand-text{
  font-family:var(--font-serif);
  font-size:16px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:0;
}
.side-nav-title{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--ink-3);
  font-weight:600;
  margin:0 10px 10px;
}
.side-nav ul{list-style:none;display:flex;flex-direction:column;gap:4px;}
.side-nav a{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--ink-2);
  transition:background .18s ease,color .18s ease,padding .18s ease;
}
.side-nav a i{width:18px;text-align:center;font-size:14px;color:var(--ink-3);transition:color .18s ease;}
.side-nav a:hover{background:var(--brand-soft);color:var(--brand-deep);}
.side-nav a:hover i{color:var(--brand);}
.side-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.side-nav a.active i{color:var(--brand);}
.side-nav a.active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:2px;
  background:var(--brand);
}
.side-foot{
  margin-top:auto;
  padding:16px 14px;
  border-radius:12px;
  background:var(--brand-soft);
  color:var(--ink-2);
  font-size:13px;
  line-height:1.75;
}
.side-foot-title{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--brand-deep);
  font-weight:700;
  margin-bottom:6px;
}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-bar{
  display:none;
  position:sticky;
  top:0;
  z-index:30;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 16px;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.mobile-brand{
  display:flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-serif);
  font-size:15.5px;
  font-weight:700;
  color:var(--ink);
}
.hamburger{
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand);
  font-size:16px;
  cursor:pointer;
  display:grid;
  place-items:center;
  transition:background .18s ease,border-color .18s ease;
}
.hamburger:hover{background:var(--brand-soft);border-color:rgba(30,91,84,.35);}
.drawer-overlay{
  position:fixed;inset:0;
  background:rgba(16,32,29,.4);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;
  z-index:55;
}
.drawer-overlay.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:280px;
  background:#fff;
  z-index:60;
  transform:translateX(100%);
  transition:transform .24s ease;
  display:flex;
  flex-direction:column;
  padding:18px 16px 24px;
  overflow-y:auto;
  box-shadow:var(--sh-3);
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  gap:10px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-serif);
  font-size:15.5px;
  font-weight:700;
}
.drawer-close{
  margin-left:auto;
  width:34px;height:34px;
  border-radius:9px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  cursor:pointer;
}
.drawer-close:hover{background:var(--brand-soft);color:var(--brand-deep);}
.drawer-body{padding-top:16px;}
.drawer-body .side-nav-title{display:block;}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:13px;color:var(--ink-3);margin-bottom:26px;}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
.breadcrumb li::after{content:"/";color:#c9d0cc;}
.breadcrumb li:last-child::after{content:"";}
.breadcrumb li:last-child{
  max-width:300px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--ink-2);
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--accent);}

/* ---------- 文章主体 ---------- */
.article-shell{display:flex;gap:46px;align-items:flex-start;}
.article-main{flex:1 1 auto;min-width:0;max-width:760px;}
.cat-pill{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.article-title{
  font-family:var(--font-serif);
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.3;
  letter-spacing:0;
  color:var(--ink);
  margin:16px 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
  font-size:13px;
  color:var(--ink-3);
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
  margin-bottom:34px;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--brand);font-size:13px;}
.meta-actions{margin-left:auto;display:inline-flex;gap:10px;}
.icon-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:32px;
  padding:0 13px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  font-size:13px;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.icon-btn:hover{border-color:rgba(30,91,84,.4);color:var(--brand-deep);background:var(--brand-soft);}
.icon-btn.is-on{background:var(--accent-soft);border-color:rgba(203,98,55,.4);color:var(--accent);}

/* ---------- 长文排版 ---------- */
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  word-wrap:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.25em;text-indent:0;}
.article-body h2{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.4;
  margin:46px 0 18px;
  padding-left:14px;
  border-left:3px solid var(--brand);
}
.article-body h3{font-size:19px;line-height:1.5;margin:30px 0 12px;color:var(--ink);}
.article-body h4{font-size:17px;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.4em;}
.article-body li{margin-bottom:.5em;}
.article-body blockquote{
  margin:26px 0;
  padding:16px 22px;
  border-left:3px solid var(--brand);
  background:var(--brand-soft);
  border-radius:0 12px 12px 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  text-align:center;
  font-size:13px;
  color:var(--ink-3);
  margin-top:10px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  background:#fff;
  box-shadow:var(--sh-1);
  border-radius:10px;
  overflow:hidden;
}
.article-body th,
.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body thead th{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#fbfbf9;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}

/* ---------- 文末标签 ---------- */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.tag-label{font-size:13px;color:var(--ink-3);}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  background:var(--card);
  border:1px solid var(--line);
  color:var(--ink-2);
  font-size:13px;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.tag:hover{border-color:rgba(30,91,84,.4);background:var(--brand-soft);color:var(--brand-deep);}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:44px 32px;
  text-align:center;
  box-shadow:var(--sh-1);
}
.empty-state .empty-title{
  font-family:var(--font-serif);
  font-size:clamp(24px,3vw,32px);
  line-height:1.35;
  margin-bottom:14px;
}
.empty-state .empty-text{color:var(--ink-2);font-size:15px;margin-bottom:24px;}

/* ---------- 正文右侧辅助栏 ---------- */
.article-aside{
  flex:0 0 200px;
  width:200px;
  position:sticky;
  top:32px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.aside-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px;
  box-shadow:var(--sh-1);
}
.aside-card h4{
  font-size:14px;
  color:var(--brand-deep);
  margin-bottom:10px;
}
.aside-card p{font-size:13.5px;color:var(--ink-2);line-height:1.75;margin-bottom:14px;}
.aside-card ul{list-style:none;display:flex;flex-direction:column;gap:9px;}
.aside-card ul a{font-size:13.5px;color:var(--ink-2);display:flex;align-items:center;gap:8px;}
.aside-card ul a i{font-size:11px;color:var(--accent);}
.aside-card ul a:hover{color:var(--brand-deep);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);}
.btn-block{width:100%;}

/* ---------- 板块通用 ---------- */
.section{margin-top:clamp(56px,7vw,92px);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
  margin-bottom:30px;
}
.section-head h2{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;
}
.text-link{
  font-size:14px;
  color:var(--brand);
  padding-bottom:2px;
  border-bottom:2px solid transparent;
  transition:border-color .18s ease,color .18s ease;
}
.text-link:hover{border-color:var(--accent);color:var(--accent);}

/* ---------- 相关推荐卡片 ---------- */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rec-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,91,84,.3);}
.rec-card:hover h3{color:var(--brand);}
.thumb{position:relative;aspect-ratio:16/10;background:var(--brand-soft);overflow:hidden;}
.thumb img{width:100%;height:100%;object-fit:cover;border:0;border-radius:0;}
.rec-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1 1 auto;}
.rec-card h3{
  font-size:17px;
  line-height:1.65;
  margin-bottom:10px;
  transition:color .18s ease;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-card p{
  font-size:14px;
  line-height:1.75;
  color:var(--ink-2);
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--ink-3);
  border-top:1px solid var(--line);
  padding-top:12px;
}
.pill-sm{
  height:24px;
  padding:0 11px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:12px;
  display:inline-flex;
  align-items:center;
}

/* ---------- 上一篇 / 下一篇 ---------- */
.postnav{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.postnav-item{
  display:flex;
  flex-direction:column;
  gap:8px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 22px 20px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.postnav-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,91,84,.3);}
.postnav-label{font-size:12px;letter-spacing:.12em;color:var(--accent);font-weight:600;}
.postnav-title{font-size:17px;font-weight:700;color:var(--ink);}
.postnav-item:hover .postnav-title{color:var(--brand);}
.postnav-desc{font-size:13.5px;color:var(--ink-2);line-height:1.7;}

/* ---------- 返回合集 CTA ---------- */
.back-cta{
  margin-top:24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:28px 30px;
  border-radius:var(--r-lg);
  background:var(--brand);
  color:#fff;
  box-shadow:var(--sh-2);
}
.back-cta p{font-size:15px;line-height:1.75;color:rgba(255,255,255,.9);}
.back-cta .btn-primary{background:#fff;color:var(--brand-deep);}
.back-cta .btn-primary:hover{background:var(--accent-soft);color:var(--accent);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--footer);
  color:rgba(255,255,255,.85);
  padding:56px 0 0;
  margin-top:clamp(56px,7vw,96px);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-serif);
  font-size:17px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);}
.site-footer h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:rgba(255,255,255,.7);
  margin-bottom:14px;
}
.site-footer ul{list-style:none;display:flex;flex-direction:column;gap:9px;}
.site-footer ul a{font-size:14px;color:rgba(255,255,255,.85);}
.site-footer ul a:hover{color:#9fd8cd;}
.qr{
  width:96px;height:96px;
  margin-top:16px;
  border-radius:12px;
  border:1px dashed rgba(255,255,255,.3);
  display:grid;
  place-items:center;
  font-size:12px;
  color:rgba(255,255,255,.5);
}
.copyright{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  margin-top:42px;
  padding:18px 0 22px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;
  color:rgba(255,255,255,.6);
}

/* ---------- 断点 ---------- */
@media (max-width:1279px) and (min-width:1024px){
  :root{--sidebar-w:88px;}
  .side-shell{padding:18px 10px;align-items:center;}
  .side-brand{flex-direction:column;gap:6px;padding:2px 0 14px;width:100%;}
  .brand-text{display:none;}
  .side-nav-title{display:none;}
  .side-nav{width:100%;}
  .side-nav a{justify-content:center;padding:12px 8px;}
  .side-nav a .nav-label{display:none;}
  .side-foot{display:none;}
}

@media (max-width:1023px){
  .side-shell{display:none;}
  .main-area{margin-left:0;}
  .mobile-bar{display:flex;}
  .article-shell{flex-direction:column;gap:34px;}
  .article-main{max-width:100%;}
  .article-aside{position:static;width:100%;flex:0 0 auto;flex-direction:row;flex-wrap:wrap;}
  .aside-card{flex:1 1 240px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cards-3{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:767px){
  body{font-size:15.5px;}
  .wrap{padding:0 16px;}
  .page-main{padding-top:24px;}
  .breadcrumb li:last-child{max-width:190px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin-top:36px;padding-left:11px;}
  .article-meta{gap:8px 14px;}
  .meta-actions{margin-left:0;width:100%;}
  .cards-3{grid-template-columns:1fr;}
  .postnav{grid-template-columns:1fr;}
  .back-cta{flex-direction:column;align-items:stretch;text-align:left;padding:24px 20px;}
  .back-cta .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .copyright{flex-direction:column;}
}

@media (max-width:520px){
  .article-title{font-size:26px;}
  .cat-pill{height:26px;padding:0 12px;font-size:12.5px;}
  .icon-btn{padding:0 11px;font-size:12.5px;}
  .aside-card{padding:16px;}
  .rec-body{padding:16px;}
  .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --ink:#16201E;
  --ink-2:#46534F;
  --ink-3:#6E7C78;
  --brand:#1E5B54;
  --brand-d:#134440;
  --brand-l:#E6EFEC;
  --sand:#CB6237;
  --sand-l:#FBEDE5;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --line:#E3E6E1;
  --footer:#10201D;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,32,29,.06);
  --sh-2:0 10px 24px -14px rgba(16,32,29,.24);
  --sh-3:0 24px 48px -28px rgba(16,32,29,.36);
  --shell:252px;
  --sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:0;color:var(--ink);line-height:1.3}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25}
h2{font-size:clamp(22px,2.6vw,30px)}
h3{font-size:18px}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--sand)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--sand);outline-offset:2px;border-radius:6px}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0;color:#fff}

/* ---------- 侧栏 App Shell ---------- */
.app-shell{
  position:fixed;top:0;left:0;width:var(--shell);height:100vh;
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
  transition:transform .28s ease-out;
}
.shell-head{
  padding:20px 20px 18px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:15.5px}
.brand:hover{color:var(--brand)}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-family:var(--serif);font-size:17px;line-height:1;
}
.brand-text{white-space:nowrap}
.side-nav{padding:18px 14px;flex:1 1 auto;overflow-y:auto}
.side-nav-title{
  font-size:12px;color:var(--ink-3);letter-spacing:.08em;margin:0 0 10px 12px;
}
.side-nav ul li a{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;margin-bottom:4px;
  border-radius:10px;border-left:3px solid transparent;
  color:var(--ink-2);font-size:15px;line-height:1.4;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.side-nav ul li a i{width:18px;text-align:center;font-size:14px;color:var(--brand);flex:0 0 18px}
.side-nav ul li a .nav-label{white-space:nowrap}
.side-nav ul li a:hover{background:var(--brand-l);color:var(--brand-d);transform:translateX(2px)}
.side-nav ul li a.active{
  background:var(--brand-l);color:var(--brand-d);
  border-left-color:var(--brand);font-weight:600;
}
.shell-foot{
  padding:16px 20px 22px;border-top:1px solid var(--line);
}
.shell-foot .foot-note{font-size:12.5px;line-height:1.7;color:var(--ink-3);margin:0 0 10px}
.shell-foot .foot-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:8px}
.shell-foot .foot-link i{font-size:12px}

/* ---------- 移动顶栏 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.menu-btn{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand);background:#fff;
}
.menu-btn:hover{background:var(--brand-l)}
.overlay{
  position:fixed;inset:0;background:rgba(16,32,29,.4);
  opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:55;
}
.overlay.show{opacity:1;visibility:visible}

/* ---------- 主区域 ---------- */
.site-main{margin-left:var(--shell);min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 28px}
main{flex:1 1 auto}

/* ---------- 面包屑 & 页头 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);padding-top:34px;
}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#B8C2BE}
.breadcrumb .current{color:var(--ink-2);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.page-head{padding:26px 0 0}
.page-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-l);color:var(--brand-d);
  font-size:13px;font-weight:600;padding:5px 14px;border-radius:999px;margin-bottom:16px;
}
.page-head h1{max-width:22ch;margin-bottom:16px}
.lede{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:62ch;margin:0}
.head-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:18px;font-size:13px;color:var(--ink-3)}
.head-meta span{display:inline-flex;align-items:center;gap:7px}
.head-meta i{color:var(--brand)}

.head-cover{
  position:relative;margin-top:28px;height:clamp(200px,26vw,260px);
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--brand-l);
}
.head-cover img{width:100%;height:100%;object-fit:cover}
.head-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(30,91,84,.72),rgba(30,91,84,.32));
}
.head-cover .cover-caption{
  position:absolute;left:24px;bottom:20px;right:96px;z-index:2;
  color:#fff;font-family:var(--serif);font-size:clamp(16px,2vw,20px);text-shadow:0 1px 1px rgba(0,0,0,.2);
}
.head-cover .seal{
  position:absolute;right:18px;bottom:16px;z-index:2;
  width:40px;height:40px;border-radius:8px;
  background:rgba(255,255,255,.26);border:1px solid rgba(255,255,255,.55);
  color:#fff;display:grid;place-items:center;font-family:var(--serif);font-size:15px;line-height:1;
}
.ridge{display:block;width:100%;height:14px;margin-top:26px;color:var(--line)}

/* ---------- 板块 ---------- */
.section{padding:clamp(56px,7vw,96px) 0 0}
.sec-head{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:28px;flex-wrap:wrap;
}
.sec-head h2{position:relative;padding-left:16px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--brand);
}
.sec-note{font-size:13px;color:var(--ink-3)}

/* ---------- 目录 ---------- */
.toc-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}
.toc-item{border-bottom:1px solid var(--line)}
.toc-item a{
  display:flex;align-items:flex-start;gap:16px;
  padding:18px 6px;min-height:62px;color:var(--ink);
  transition:transform .18s ease-out,background .18s ease-out;
}
.toc-item a:hover{transform:translateX(4px);color:var(--ink)}
.toc-num{
  font-family:var(--serif);font-size:21px;line-height:1.25;color:var(--sand);
  flex:0 0 34px;transition:color .18s ease-out;
}
.toc-body{display:block;flex:1 1 auto;min-width:0}
.toc-title{display:block;font-size:17px;font-weight:700;line-height:1.5;transition:color .18s ease-out}
.toc-desc{display:block;font-size:14px;line-height:1.75;color:var(--ink-3);margin-top:2px}
.toc-arrow{margin-left:auto;align-self:center;color:var(--ink-3);font-size:13px;transition:transform .18s ease-out,color .18s ease-out}
.toc-item a:hover .toc-title{color:var(--brand)}
.toc-item a:hover .toc-arrow{transform:translateX(3px);color:var(--sand)}

/* ---------- 杂志栅格卡片 ---------- */
.mag-grid{align-items:flex-start}
.mag-col-offset{padding-top:40px}
.mag-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);margin-bottom:32px;color:var(--ink);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.mag-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,91,84,.32);color:var(--ink)}
.mag-cover{position:relative;aspect-ratio:16/10;background:var(--brand-l);overflow:hidden}
.mag-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease-out}
.mag-card:hover .mag-cover img{transform:scale(1.03)}
.mag-tag{
  position:absolute;top:12px;right:12px;background:rgba(255,255,255,.94);
  color:var(--brand-d);font-size:12px;font-weight:600;padding:4px 11px;border-radius:999px;
  box-shadow:var(--sh-1);
}
.mag-body{padding:20px 22px 22px}
.mag-body h3{font-size:19px;line-height:1.45;margin-bottom:10px;transition:color .18s ease-out}
.mag-card:hover .mag-body h3{color:var(--brand)}
.mag-body p{font-size:14px;line-height:1.75;color:var(--ink-2);margin:0 0 14px}
.mag-meta{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--ink-3)}
.mag-meta span{display:inline-flex;align-items:center;gap:6px}
.mag-meta i{color:var(--brand);font-size:12px}

/* ---------- 深色板块 ---------- */
.deep-inner{
  background:var(--brand-d);border-radius:var(--r-lg);color:#fff;
  padding:clamp(28px,4vw,48px);
  display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(24px,4vw,52px);
  box-shadow:var(--sh-3);
}
.deep-inner h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:14px}
.deep-inner p{color:rgba(255,255,255,.78);font-size:15.5px;line-height:1.85;margin:0}
.step-list li{
  display:flex;gap:16px;align-items:flex-start;
  padding:16px 0;border-bottom:1px solid rgba(255,255,255,.14);
}
.step-list li:first-child{padding-top:0}
.step-list li:last-child{border-bottom:0;padding-bottom:0}
.step-index{
  font-family:var(--serif);font-size:18px;color:var(--sand);
  background:rgba(255,255,255,.1);border-radius:8px;
  width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;line-height:1;
}
.step-text strong{display:block;font-size:16px;color:#fff;font-weight:700;margin-bottom:2px}
.step-text span{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72)}

/* ---------- 相关推荐 ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rec-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);color:var(--ink);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,91,84,.32);color:var(--ink)}
.rec-cover{aspect-ratio:16/10;background:var(--brand-l);overflow:hidden}
.rec-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease-out}
.rec-card:hover .rec-cover img{transform:scale(1.03)}
.rec-body{padding:18px 20px 20px}
.rec-body h3{font-size:17px;margin-bottom:8px;transition:color .18s ease-out}
.rec-card:hover .rec-body h3{color:var(--brand)}
.rec-body p{font-size:13.5px;line-height:1.75;color:var(--ink-3);margin:0}

/* ---------- CTA ---------- */
.cta-bar{
  background:var(--brand);border-radius:var(--r-lg);color:#fff;
  padding:clamp(26px,3.6vw,40px);
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  box-shadow:var(--sh-2);
}
.cta-bar h2{color:#fff;font-size:clamp(20px,2.2vw,26px);margin-bottom:8px}
.cta-bar p{color:rgba(255,255,255,.82);font-size:15px;margin:0;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.btn i{font-size:13px}
.btn-solid{background:var(--brand);color:#fff}
.btn-solid:hover{background:var(--brand-d);color:#fff;transform:translateY(-1px)}
.btn-solid:active{transform:translateY(0)}
.btn-ghost{border-color:rgba(255,255,255,.72);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-line{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-line:hover{background:var(--brand-l);color:var(--brand-d)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed}
.link-more{
  font-size:14px;font-weight:600;border-bottom:2px solid currentColor;padding-bottom:2px;
  transition:color .18s ease-out;
}
.link-more:hover{color:var(--sand)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--brand)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{margin:0}
.faq-q button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:18px 4px;text-align:left;
  font-family:var(--sans);font-size:17px;font-weight:700;line-height:1.5;color:var(--ink);
  transition:color .18s ease-out;
}
.faq-q button:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 20px;width:20px;height:20px;position:relative;
  transition:transform .2s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{top:0;left:9px;width:2px;height:20px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
.faq-item.open .faq-a{max-height:340px}
.faq-a p{
  padding:0 44px 20px 4px;margin:0;font-size:15px;line-height:1.85;color:var(--ink-2);
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:rgba(255,255,255,.85);margin-top:clamp(64px,8vw,110px)}
.site-footer .wrap{padding-top:clamp(44px,5vw,64px);padding-bottom:26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:#fff;font-size:16px;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24)}
.site-footer p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.68);margin:0 0 14px;max-width:34ch}
.site-footer h4{color:rgba(255,255,255,.7);font-size:13px;font-family:var(--sans);letter-spacing:.04em;margin-bottom:14px;font-weight:600}
.site-footer ul li{margin-bottom:10px}
.site-footer ul li a{font-size:14px;color:rgba(255,255,255,.85)}
.site-footer ul li a:hover{color:#A8D6CC}
.qr{
  width:96px;height:96px;border-radius:10px;border:1px dashed rgba(255,255,255,.32);
  display:grid;place-items:center;font-size:12.5px;color:rgba(255,255,255,.6);background:rgba(255,255,255,.04);
}
.copyright{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  :root{--shell:88px}
  .brand-text,.side-nav-title,.shell-foot .foot-note{display:none}
  .shell-head{justify-content:center;padding:18px 10px}
  .side-nav ul li a{justify-content:center;padding:12px 8px}
  .side-nav ul li a .nav-label{
    position:absolute;left:82px;background:var(--brand-d);color:#fff;
    padding:6px 12px;border-radius:8px;font-size:13px;white-space:nowrap;
    opacity:0;visibility:hidden;transform:translateX(-6px);
    transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
    z-index:80;box-shadow:var(--sh-2);
  }
  .side-nav ul li a{position:relative}
  .side-nav ul li a:hover .nav-label{opacity:1;visibility:visible;transform:translateX(0)}
  .side-nav ul li a i{width:22px;font-size:16px}
  .shell-foot{padding:14px 10px 20px;display:flex;justify-content:center}
  .shell-foot .foot-link span{display:none}
}
@media screen and (max-width:1023px){
  .mobile-bar{display:flex}
  .app-shell{transform:translateX(-100%);width:280px;box-shadow:var(--sh-3)}
  .app-shell.open{transform:translateX(0)}
  .app-shell .brand-text,
  .app-shell .side-nav-title,
  .app-shell .shell-foot .foot-note{display:block}
  .app-shell .shell-head{justify-content:flex-start;padding:18px 20px}
  .app-shell .side-nav ul li a{justify-content:flex-start;padding:12px 12px}
  .app-shell .side-nav ul li a .nav-label{position:static;opacity:1;visibility:visible;transform:none;background:none;color:inherit;padding:0;box-shadow:none}
  .app-shell .shell-foot{display:block;padding:16px 20px 22px}
  .site-main{margin-left:0;padding-top:60px}
  .breadcrumb{padding-top:24px}
  .deep-inner{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media screen and (max-width:767px){
  .wrap{padding:0 18px}
  .toc-list{grid-template-columns:1fr;gap:0}
  .mag-col-offset{padding-top:0}
  .mag-card{margin-bottom:22px}
  .rec-grid{grid-template-columns:1fr}
  .head-cover{height:200px;border-radius:14px}
  .head-cover .cover-caption{left:16px;right:80px;font-size:16px}
  .cta-bar{padding:24px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .faq-a p{padding-right:8px}
  .footer-grid{grid-template-columns:1fr}
  .copyright{flex-direction:column;gap:6px}
  .site-footer p{max-width:none}
}
@media screen and (max-width:520px){
  body{font-size:15.5px}
  .page-head h1{max-width:none}
  .toc-item a{gap:12px;padding:16px 2px}
  .toc-num{flex:0 0 28px;font-size:19px}
  .mag-body{padding:18px}
  .head-meta{gap:12px}
}

/* roulang page: category1 */
:root{
  --color-primary:#1E5B54;
  --color-primary-dark:#134440;
  --color-primary-light:#E6EFEC;
  --color-accent:#CB6237;
  --color-accent-light:#FBEDE5;
  --text:#16201E;
  --text-2:#46534F;
  --text-3:#6E7C78;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --line:#E3E6E1;
  --footer-bg:#10201D;
  --radius-card:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,32,29,.06);
  --shadow-2:0 10px 24px -14px rgba(16,32,29,.24);
  --shadow-3:0 24px 48px -28px rgba(16,32,29,.36);
  --space-section:clamp(56px,7vw,96px);
  --sidebar-w:252px;
  --sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --ease:.18s ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--color-primary);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
a:hover{color:var(--color-accent)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}

/* Foundation 默认样式覆盖 */
body,html{font-family:var(--sans)}
a,.button,button{color:inherit}
.button{
  background:var(--color-primary);
  color:#fff;
  border-radius:var(--radius-btn);
  font-family:var(--sans);
  font-weight:600;
}
.button:hover{background:var(--color-primary-dark)}
.button.hollow{border-color:currentColor;background:transparent}
.grid-x{margin:0}
.grid-x-gutter{margin-left:-14px;margin-right:-14px}
.grid-x-gutter>.cell{padding-left:14px;padding-right:14px}
.accordion,.accordion li,.accordion-item{margin:0;padding:0;border:0;background:none}

/* 布局骨架 */
.app-shell{min-height:100vh}
.app-sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--card);
  border-right:1px solid var(--line);
  padding:24px 16px 20px;
  display:flex;
  flex-direction:column;
  gap:6px;
  overflow-y:auto;
  z-index:60;
  transition:width .22s ease-out;
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 18px;border-bottom:1px solid var(--line);margin-bottom:16px}
.brand:hover{color:var(--text)}
.brand-mark{
  flex:0 0 32px;width:32px;height:32px;border-radius:9px;
  background:linear-gradient(140deg,var(--color-primary),var(--color-primary-dark));
  color:#fff;font-family:var(--serif);font-size:17px;
  display:grid;place-items:center;
}
.brand-text{font-family:var(--serif);font-weight:700;font-size:16px;color:var(--text);white-space:nowrap;letter-spacing:.01em}
.side-nav-title{font-size:12px;color:var(--text-3);letter-spacing:.14em;margin:0 0 8px 10px;white-space:nowrap}
.side-nav ul{display:flex;flex-direction:column;gap:4px}
.side-nav a{
  position:relative;
  display:flex;align-items:center;gap:10px;
  padding:11px 10px;border-radius:10px;
  color:var(--text-2);font-size:15px;
  transition:background-color var(--ease),color var(--ease);
}
.side-nav a i{width:18px;text-align:center;font-size:14px;color:currentColor;flex:0 0 18px}
.side-nav a:hover{background:var(--color-primary-light);color:var(--color-primary)}
.side-nav a.active{background:var(--color-primary-light);color:var(--color-primary);font-weight:600}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--color-primary);
}
.nav-label{white-space:nowrap}
.side-foot{
  margin-top:auto;padding:16px 12px;
  background:var(--color-primary-light);
  border-radius:var(--radius-card);
}
.side-foot-title{font-size:13px;font-weight:700;color:var(--color-primary-dark);margin-bottom:6px}
.side-foot-text{font-size:13px;line-height:1.7;color:var(--text-2);margin-bottom:10px}
.side-foot-link{font-size:13px;font-weight:600;border-bottom:2px solid transparent;padding-bottom:2px}
.side-foot-link:hover{border-bottom-color:var(--color-accent)}

.app-main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;flex-direction:column;
}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}

/* 移动端顶栏与抽屉 */
.mobile-topbar{display:none}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;
  background:var(--card);padding:20px 16px;overflow-y:auto;
  transform:translateX(103%);transition:transform .24s ease-out;
  z-index:95;box-shadow:var(--shadow-3);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 4px 16px;border-bottom:1px solid var(--line);margin-bottom:14px}
.drawer-head strong{font-family:var(--serif);font-size:16px}
.drawer-close{background:none;border:0;font-size:18px;color:var(--text-2);cursor:pointer;padding:6px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,32,29,.4);
  opacity:0;visibility:hidden;transition:opacity .24s ease-out;z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible}

/* 页头 */
.page-head{padding:clamp(34px,4.6vw,58px) 0 26px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--color-primary)}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:#B9C0BB}
.eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.12em;
  color:var(--color-primary);background:var(--color-primary-light);
  padding:4px 12px;border-radius:var(--radius-pill);margin-bottom:16px;
}
.page-head h1{
  font-family:var(--serif);
  font-size:clamp(30px,4vw,46px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:0;
  margin-bottom:16px;
}
.page-lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:760px}
.head-meta{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:22px;font-size:13.5px;color:var(--text-3)}
.head-meta li{display:flex;align-items:center;gap:8px}
.head-meta i{color:var(--color-primary)}

/* 分类封面 */
.cat-cover{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  height:clamp(200px,26vh,260px);
  border:1px solid var(--line);
  background:var(--color-primary-light);
  margin-bottom:var(--space-section);
}
.cat-cover img{width:100%;height:100%;object-fit:cover}
.cat-cover-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(30,91,84,.72),rgba(30,91,84,.32));
}
.cat-cover-text{position:absolute;left:32px;bottom:28px;color:#fff}
.cover-kicker{font-size:12.5px;letter-spacing:.14em;opacity:.85;margin-bottom:6px}
.cover-title{font-family:var(--serif);font-size:clamp(20px,2.6vw,28px);font-weight:700}
.seal{
  position:absolute;right:26px;bottom:24px;
  width:40px;height:40px;border-radius:8px;
  background:rgba(30,91,84,.55);
  border:1px solid rgba(255,255,255,.45);
  color:#fff;font-family:var(--serif);font-size:18px;
  display:grid;place-items:center;
}

/* 板块 */
.section{padding-bottom:var(--space-section)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  border-bottom:1px solid var(--line);
  padding-bottom:16px;margin-bottom:30px;
}
.section-head h2,.section-title{
  font-family:var(--serif);
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;font-weight:700;
}
.section-sub{font-size:14px;color:var(--text-3);margin-top:8px}
.text-link{font-size:14px;font-weight:600;border-bottom:2px solid transparent;padding-bottom:2px;white-space:nowrap}
.text-link:hover{border-bottom-color:var(--color-accent)}

/* 目录优先布局 */
.toc-layout{align-items:flex-start}
.toc-index{
  position:sticky;top:28px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 20px;
  box-shadow:var(--shadow-1);
}
.toc-index-title{
  font-size:12.5px;letter-spacing:.14em;color:var(--text-3);
  padding-bottom:12px;border-bottom:2px solid var(--color-primary);margin-bottom:6px;
}
.toc-index ul{display:flex;flex-direction:column}
.toc-index li+li{border-top:1px solid var(--line)}
.toc-index a{display:flex;align-items:baseline;gap:10px;padding:11px 0;font-size:14.5px;color:var(--text-2);line-height:1.6}
.toc-index a:hover{color:var(--color-primary)}
.toc-index a:hover .toc-num{color:var(--color-accent)}
.toc-num{font-family:var(--serif);font-size:14px;color:var(--color-accent);flex:0 0 24px}
.entry{
  background:transparent;
  border-bottom:1px solid var(--line);
  padding:0 0 26px;
  margin-bottom:26px;
  scroll-margin-top:90px;
}
.entry:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.entry-head{display:flex;align-items:baseline;gap:12px;margin-bottom:10px}
.entry-num{font-family:var(--serif);font-size:26px;line-height:1;color:var(--color-accent);flex:0 0 auto}
.entry h3{font-size:19px;line-height:1.45;font-weight:700}
.entry p{font-size:15.5px;line-height:1.9;color:var(--text-2);margin-bottom:12px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--radius-pill);
  background:var(--color-primary-light);color:var(--color-primary);
  font-size:12.5px;line-height:1.7;
}
.tag.accent{background:var(--color-accent-light);color:var(--color-accent)}

/* 卡片 */
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
.card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(30,91,84,.3);box-shadow:var(--shadow-2)}
.card:hover h3{color:var(--color-primary)}
.card-cover{position:relative;aspect-ratio:16/10;background:var(--color-primary-light);border-bottom:1px solid var(--line)}
.card-cover img{width:100%;height:100%;object-fit:cover}
.card-pill{
  position:absolute;top:12px;right:12px;
  background:rgba(255,255,255,.92);color:var(--color-primary);
  font-size:12px;padding:4px 11px;border-radius:var(--radius-pill);
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.5;font-weight:700;transition:color var(--ease)}
.card-body p{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.card-meta i{color:var(--color-primary);margin-right:5px}

/* 相关推荐 */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rec-card{
  display:flex;gap:14px;align-items:center;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:14px;
  box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(30,91,84,.3)}
.rec-thumb{flex:0 0 88px;width:88px;height:66px;border-radius:10px;overflow:hidden;background:var(--color-primary-light);border:1px solid var(--line)}
.rec-thumb img{width:100%;height:100%;object-fit:cover}
.rec-body h3{font-size:15.5px;font-weight:700;line-height:1.5;margin-bottom:4px}
.rec-card:hover h3{color:var(--color-primary)}
.rec-body span{font-size:12.5px;color:var(--text-3)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--color-primary);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--color-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{border-color:rgba(255,255,255,.72);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-outline{border-color:var(--color-primary);color:var(--color-primary);background:transparent}
.btn-outline:hover{background:var(--color-primary-light);color:var(--color-primary)}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* CTA 条带 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));
  border-radius:var(--radius-lg);
  padding:clamp(28px,4vw,44px);
  color:#fff;
  margin-bottom:var(--space-section);
  box-shadow:var(--shadow-2);
}
.cta-band h2{font-family:var(--serif);font-size:clamp(20px,2.4vw,26px);line-height:1.4;margin-bottom:8px;color:#fff}
.cta-band p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.85);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* FAQ */
.faq-list{max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:2px solid var(--color-primary)}
.faq-q-wrap{margin:0;font-size:inherit}
.faq-q{
  width:100%;background:none;border:0;
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:18px;
  font-size:17px;font-weight:700;line-height:1.6;color:var(--text);
  text-align:left;cursor:pointer;
}
.faq-q:hover{color:var(--color-primary)}
.faq-q i{color:var(--color-primary);font-size:14px;transition:transform .2s ease-out;flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text-2);padding:0 0 22px;max-width:800px}

/* 页脚 */
.site-footer{
  margin-top:auto;
  background:var(--footer-bg);
  color:rgba(255,255,255,.85);
  padding:60px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:16px;font-weight:700;color:#fff;margin-bottom:12px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22)}
.site-footer p{font-size:13.8px;line-height:1.8;color:rgba(255,255,255,.72)}
.site-footer h4{font-size:13px;font-weight:600;letter-spacing:.06em;color:rgba(255,255,255,.7);margin-bottom:14px}
.site-footer ul{display:flex;flex-direction:column;gap:9px}
.site-footer ul a{font-size:14px;color:rgba(255,255,255,.85)}
.site-footer ul a:hover{color:#9ED6C9}
.qr{
  width:96px;height:96px;margin-top:16px;border-radius:10px;
  border:1px dashed rgba(255,255,255,.3);
  display:grid;place-items:center;font-size:12.5px;color:rgba(255,255,255,.5);
}
.copyright{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.14);
  margin-top:40px;padding-top:18px;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* 响应式 */
@media (min-width:1024px) and (max-width:1279px){
  .app-sidebar{width:88px;padding:24px 12px 20px}
  .app-sidebar:hover{width:252px;box-shadow:var(--shadow-3)}
  .brand-text,.nav-label,.side-nav-title,.side-foot{opacity:0;pointer-events:none;transition:opacity .16s ease-out}
  .app-sidebar:hover .brand-text,.app-sidebar:hover .nav-label,
  .app-sidebar:hover .side-nav-title,.app-sidebar:hover .side-foot{opacity:1;pointer-events:auto}
  .app-main{margin-left:88px}
}
@media (max-width:1023px){
  .app-sidebar{display:none}
  .app-main{margin-left:0;padding-top:60px}
  .mobile-topbar{
    display:flex;align-items:center;gap:14px;
    position:fixed;top:0;left:0;right:0;height:60px;
    background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);
    padding:0 18px;z-index:80;
  }
  .mobile-topbar .brand-mark{flex:0 0 30px;width:30px;height:30px;font-size:16px}
  .mobile-logo{font-family:var(--serif);font-weight:700;font-size:15.5px}
  .hamburger{
    margin-left:auto;background:none;border:1px solid var(--line);
    width:40px;height:40px;border-radius:10px;color:var(--color-primary);
    font-size:16px;cursor:pointer;transition:background-color var(--ease);
  }
  .hamburger:hover{background:var(--color-primary-light)}
  .wrap{padding:0 22px}
  .feature-grid{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .toc-index{position:static}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .wrap{padding:0 18px}
  .cat-cover{height:200px;border-radius:14px}
  .cat-cover-text{left:20px;bottom:20px}
  .seal{right:18px;bottom:18px}
  .page-lead{font-size:15.5px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .entry h3{font-size:17.5px}
  .card-body{padding:18px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .btn{width:100%}
  .cta-actions{width:100%}
  .head-meta{gap:8px 16px}
  .rec-card{flex-direction:column;align-items:flex-start}
  .rec-thumb{width:100%;flex:0 0 auto;height:130px}
}

/* roulang page: category3 */
:root{
  --primary:#1E5B54;
  --primary-dark:#134440;
  --primary-soft:#E6EFEC;
  --accent:#CB6237;
  --accent-soft:#FBEDE5;
  --ink:#16201E;
  --ink-2:#46534F;
  --ink-3:#6E7C78;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --line:#E3E6E1;
  --footer:#10201D;
  --radius:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,32,29,.06);
  --shadow-2:0 10px 24px -14px rgba(16,32,29,.24);
  --shadow-3:0 24px 48px -28px rgba(16,32,29,.36);
  --shell-w:252px;
  --gap:clamp(56px,7vw,96px);
  --font-sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-left:var(--shell-w);
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:1px solid var(--line);background:var(--primary-soft);}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out;}
a:hover,a:focus{color:var(--accent);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;font-weight:700;letter-spacing:0;line-height:1.3;}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,30px);}
h3{font-size:18px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;}

/* ============ 移动端顶栏 ============ */
.mobile-topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:#fff;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 16px;box-shadow:var(--shadow-1);
}
.mobile-topbar .brand{display:flex;align-items:center;gap:10px;}
.hamburger{
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--primary);font-size:17px;display:grid;place-items:center;
  transition:background .18s ease-out,border-color .18s ease-out;
}
.hamburger:hover{background:var(--primary-soft);border-color:var(--primary);}

/* ============ 侧栏 App Shell ============ */
.app-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell-w);z-index:60;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  transition:width .22s ease-out,transform .28s ease-out;
  overflow:hidden;
}
.shell-head{padding:22px 20px 16px;border-bottom:1px solid var(--line);}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  flex:0 0 auto;width:32px;height:32px;border-radius:9px;
  background:var(--primary);color:#fff;font-family:var(--font-serif);
  font-size:16px;display:grid;place-items:center;
}
.brand-text{
  font-family:var(--font-serif);font-size:17px;font-weight:700;color:var(--ink);
  white-space:nowrap;
}
.brand-sub{
  display:block;margin-top:8px;font-size:12.5px;color:var(--ink-3);
  letter-spacing:.02em;white-space:nowrap;
}
.side-nav{padding:16px 12px;flex:1 1 auto;overflow-y:auto;}
.side-nav-title{
  font-size:12px;color:var(--ink-3);letter-spacing:.08em;
  padding:0 10px 10px;margin:0;white-space:nowrap;
}
.side-nav ul{display:block;}
.side-nav li{margin-bottom:4px;}
.side-nav a{
  display:flex;align-items:center;gap:11px;
  padding:11px 12px;border-radius:10px;
  color:var(--ink-2);font-size:14.5px;position:relative;
  transition:background .18s ease-out,color .18s ease-out;
}
.side-nav a i{width:18px;text-align:center;font-size:14px;color:var(--ink-3);transition:color .18s ease-out;}
.side-nav a .nav-label{white-space:nowrap;}
.side-nav a:hover{background:var(--primary-soft);color:var(--primary);}
.side-nav a:hover i{color:var(--primary);}
.side-nav a.active{
  background:var(--primary-soft);color:var(--primary-dark);font-weight:600;
}
.side-nav a.active i{color:var(--primary);}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--primary);
}
.shell-foot{padding:16px 18px 22px;border-top:1px solid var(--line);background:#FCFCFA;}
.shell-foot-title{font-size:12.5px;color:var(--ink-3);letter-spacing:.06em;margin-bottom:10px;}
.mini-form input{
  width:100%;height:42px;border:1px solid var(--line);border-radius:10px;
  padding:0 12px;font-size:13.5px;background:#fff;color:var(--ink);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.mini-form input:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(30,91,84,.12);
}
.mini-form button{
  margin-top:10px;width:100%;height:42px;border:none;border-radius:10px;
  background:var(--primary);color:#fff;font-size:14px;
  transition:background .18s ease-out,transform .18s ease-out;
}
.mini-form button:hover{background:var(--primary-dark);transform:translateY(-1px);}
.mini-form button:active{transform:translateY(0);}
.shell-overlay{
  display:none;position:fixed;inset:0;background:rgba(16,32,29,.4);z-index:55;
  opacity:0;transition:opacity .25s ease-out;
}
.shell-overlay.show{opacity:1;}

/* ============ 主内容区 ============ */
.main-area{padding-bottom:0;}
.container{max-width:1180px;margin:0 auto;padding:clamp(28px,4vw,48px) 24px 0;}

.crumbs{font-size:13px;color:var(--ink-3);margin-bottom:20px;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:flex;align-items:center;gap:8px;max-width:100%;}
.crumbs li+li::before{content:"/";color:#B9C1BD;}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--accent);}
.crumbs .cur{color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60vw;}

.page-head{padding-bottom:26px;border-bottom:1px solid var(--line);}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-dark);
  font-size:12.5px;letter-spacing:.04em;
}
.pill i{font-size:11px;}
.page-head h1{margin:16px 0 14px;max-width:900px;}
.page-head .lede{
  font-size:17px;color:var(--ink-2);max-width:760px;
}
.page-head .meta-line{
  margin-top:18px;display:flex;flex-wrap:wrap;gap:20px;
  font-size:13px;color:var(--ink-3);
}
.page-head .meta-line span{display:inline-flex;align-items:center;gap:7px;}

/* 封面 */
.cover-strip{
  margin-top:clamp(28px,4vw,44px);
  position:relative;height:240px;border-radius:var(--radius-lg);overflow:hidden;
  background-image:linear-gradient(180deg,rgba(30,91,84,.72),rgba(30,91,84,.34)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  display:flex;align-items:flex-end;
  border:1px solid var(--line);
}
.cover-strip .cover-text{
  position:relative;z-index:2;padding:26px 28px;color:#fff;max-width:640px;
}
.cover-strip .cover-text p{
  font-size:15px;color:rgba(255,255,255,.9);text-shadow:0 1px 1px rgba(0,0,0,.2);
}
.cover-strip .cover-text strong{
  display:block;font-family:var(--font-serif);font-size:20px;margin-bottom:6px;
  text-shadow:0 1px 1px rgba(0,0,0,.2);
}
.seal{
  position:absolute;right:18px;bottom:18px;width:40px;height:40px;z-index:2;
  border-radius:8px;background:rgba(255,255,255,.22);border:1px solid rgba(255,255,255,.5);
  color:#fff;font-family:var(--font-serif);font-size:15px;display:grid;place-items:center;
}

/* 板块 */
.sec{margin-top:var(--gap);}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  padding-bottom:16px;margin-bottom:6px;border-bottom:1px solid var(--line);
  position:relative;
}
.sec-head::after{
  content:"";position:absolute;left:0;bottom:-1px;width:64px;height:2px;background:var(--primary);
}
.sec-head h2{margin-bottom:6px;}
.sec-head p{font-size:14px;color:var(--ink-3);}
.sec-more{font-size:14px;white-space:nowrap;border-bottom:2px solid transparent;padding-bottom:3px;}
.sec-more:hover{border-bottom-color:var(--accent);}

/* 目录 */
.toc-list{margin-top:6px;}
.toc-item{border-bottom:1px solid var(--line);}
.toc-item a{
  display:flex;align-items:center;gap:16px;
  min-height:60px;padding:14px 4px;
  color:var(--ink);transition:transform .18s ease-out,color .18s ease-out;
}
.toc-item a:hover{transform:translateX(4px);color:var(--primary);}
.toc-num{
  font-family:var(--font-serif);font-size:20px;color:var(--accent);
  flex:0 0 auto;width:34px;
}
.toc-body{flex:1 1 auto;min-width:0;}
.toc-name{display:block;font-size:16.5px;font-weight:700;}
.toc-desc{display:block;font-size:13.5px;color:var(--ink-3);line-height:1.7;}
.toc-arrow{color:var(--ink-3);font-size:13px;flex:0 0 auto;transition:color .18s ease-out,transform .18s ease-out;}
.toc-item a:hover .toc-arrow{color:var(--accent);transform:translateX(3px);}

/* 时间线 */
.timeline{position:relative;margin-top:26px;padding-left:2px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:10px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(30,91,84,.18));
  border-radius:2px;
}
.tl-item{position:relative;padding:0 0 34px 40px;}
.tl-item:last-child{padding-bottom:6px;}
.tl-item::before{
  content:"";position:absolute;left:5px;top:9px;width:10px;height:10px;
  border-radius:50%;border:2px solid var(--primary);background:var(--bg);
  transition:background .18s ease-out,transform .18s ease-out;
}
.tl-item:hover::before{background:var(--accent);border-color:var(--accent);transform:scale(1.1);}
.tl-num{
  display:inline-block;font-family:var(--font-serif);font-size:20px;
  color:var(--accent);margin-bottom:4px;
}
.tl-title{font-size:19px;margin-bottom:8px;}
.tl-desc{font-size:14.5px;color:var(--ink-2);line-height:1.8;max-width:760px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.tag{
  display:inline-block;padding:3px 11px;border-radius:999px;
  background:var(--accent-soft);color:#8E4423;font-size:12.5px;
}

/* 推荐卡片 */
.card{
  height:100%;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-2px);border-color:rgba(30,91,84,.3);box-shadow:var(--shadow-2);}
.card .thumb{
  position:relative;aspect-ratio:16/10;background:var(--primary-soft);overflow:hidden;
}
.card .thumb img{width:100%;height:100%;object-fit:cover;border:none;border-radius:0;}
.card .thumb .thumb-pill{
  position:absolute;top:10px;right:10px;
  background:rgba(255,255,255,.92);color:var(--primary-dark);
  font-size:12px;padding:3px 10px;border-radius:999px;
}
.card .body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1 1 auto;}
.card h3{font-size:17px;line-height:1.5;margin-bottom:9px;}
.card:hover h3{color:var(--primary);}
.card .excerpt{font-size:14px;color:var(--ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .card-foot{
  margin-top:16px;padding-top:12px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-3);display:flex;align-items:center;justify-content:space-between;gap:10px;
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;border:1px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn-solid{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn-solid:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);}
.btn-solid:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-dark);}
.btn-solid.is-on{background:var(--accent);border-color:var(--accent);}
.btn[disabled]{opacity:.45;cursor:not-allowed;}

/* CTA 条带 */
.cta-band{
  margin-top:var(--gap);
  background:var(--primary);color:#fff;border-radius:var(--radius-lg);
  padding:clamp(26px,4vw,42px);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.85);font-size:14.5px;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-band .btn-solid{background:#fff;color:var(--primary);border-color:#fff;}
.cta-band .btn-solid:hover{background:var(--primary-soft);color:var(--primary-dark);}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.7);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;}

/* FAQ */
.faq{margin-top:26px;border-top:1px solid var(--primary);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-head{margin:0;font-family:var(--font-sans);font-weight:700;}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  min-height:60px;padding:16px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:700;color:var(--ink);
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  transition:transform .2s ease-out;
}
.faq-icon::before{left:3px;right:3px;top:10px;height:2px;}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:2px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out;}
.faq-a p{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:780px;}

.sec-note{
  margin-top:18px;padding:16px 18px;border-left:3px solid var(--primary);
  background:var(--primary-soft);border-radius:0 var(--radius) var(--radius) 0;
  font-size:14px;color:var(--ink-2);
}

/* 页脚 */
.site-footer{
  margin-top:var(--gap);background:var(--footer);color:rgba(255,255,255,.85);
  padding:clamp(40px,5vw,64px) 0 0;
}
.site-footer .wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
.footer-grid{gap:32px 0;}
.footer-brand{
  display:flex;align-items:center;gap:10px;font-family:var(--font-serif);
  font-size:17px;color:#fff;margin-bottom:14px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);}
.site-footer p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8;}
.site-footer h4{
  font-family:var(--font-sans);font-size:13px;color:rgba(255,255,255,.7);
  font-weight:600;letter-spacing:.06em;margin-bottom:14px;
}
.site-footer ul li{margin-bottom:9px;}
.site-footer ul a{font-size:14px;color:rgba(255,255,255,.85);}
.site-footer ul a:hover{color:#BFE0D8;}
.qr{
  width:96px;height:96px;margin-top:16px;border-radius:10px;
  border:1px dashed rgba(255,255,255,.35);
  display:grid;place-items:center;font-size:12px;color:rgba(255,255,255,.6);
}
.copyright{
  margin-top:36px;border-top:1px solid rgba(255,255,255,.14);
  padding:18px 0 26px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.62);
}

/* ============ 响应式 ============ */
@media (min-width:1024px) and (max-width:1279px){
  body{padding-left:88px;}
  .app-shell{width:88px;}
  .app-shell:hover{width:252px;box-shadow:var(--shadow-3);}
  .shell-head{padding:20px 0 16px;text-align:center;}
  .shell-head .brand{justify-content:center;}
  .brand-text,.brand-sub,.side-nav-title,.shell-foot-title,.nav-label{opacity:0;transition:opacity .16s ease-out;}
  .app-shell:hover .brand-text,
  .app-shell:hover .brand-sub,
  .app-shell:hover .side-nav-title,
  .app-shell:hover .shell-foot-title,
  .app-shell:hover .nav-label{opacity:1;}
  .side-nav{padding:16px 8px;}
  .side-nav a{justify-content:center;padding:12px 0;}
  .app-shell:hover .side-nav a{justify-content:flex-start;padding:11px 12px;}
  .shell-foot{padding:14px 8px 20px;text-align:center;}
  .mini-form{display:none;}
  .app-shell:hover .mini-form{display:block;}
}

@media (max-width:1023px){
  body{padding-left:0;padding-top:64px;}
  .mobile-topbar{display:flex;}
  .app-shell{
    width:280px;transform:translateX(-100%);
    box-shadow:var(--shadow-3);border-right:none;
  }
  .app-shell.open{transform:translateX(0);}
  .shell-overlay{display:block;pointer-events:none;}
  .shell-overlay.show{pointer-events:auto;}
  .container{padding:26px 18px 0;}
  .cover-strip{height:210px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 160px;}
}

@media (max-width:767px){
  body{font-size:15.5px;}
  .page-head h1{margin:14px 0 12px;}
  .page-head .lede{font-size:15.5px;}
  .cover-strip{height:180px;border-radius:var(--radius);}
  .cover-strip .cover-text{padding:18px 18px;}
  .cover-strip .cover-text strong{font-size:17px;}
  .cover-strip .cover-text p{font-size:13.5px;}
  .seal{width:34px;height:34px;right:12px;bottom:12px;font-size:13px;}
  .card .body{padding:16px;}
  .faq-q{font-size:15.5px;}
  .copyright{flex-direction:column;gap:6px;}
}

@media (max-width:519px){
  .container{padding:22px 15px 0;}
  .toc-item a{gap:12px;padding:13px 2px;}
  .toc-num{font-size:18px;width:28px;}
  .toc-name{font-size:15.5px;}
  .tl-item{padding-left:32px;}
  .tl-num{font-size:18px;}
  .tl-title{font-size:17px;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;}
}

/* roulang page: category4 */
:root{
  --c-primary:#1E5B54;
  --c-primary-deep:#134440;
  --c-primary-soft:#E6EFEC;
  --c-accent:#CB6237;
  --c-accent-soft:#FBEDE5;
  --c-ink:#16201E;
  --c-ink-2:#46534F;
  --c-ink-3:#6E7C78;
  --c-bg:#F7F6F2;
  --c-card:#FFFFFF;
  --c-line:#E3E6E1;
  --c-footer:#10201D;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,32,29,.06);
  --sh-2:0 10px 24px -14px rgba(16,32,29,.24);
  --sh-3:0 24px 48px -28px rgba(16,32,29,.36);
  --sidebar-w:252px;
  --gap-section:clamp(56px,7vw,96px);
  --font-sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;color:var(--c-ink);letter-spacing:0;line-height:1.35;}
h1{font-family:var(--font-serif);font-size:clamp(30px,4vw,46px);line-height:1.25;}
h2{font-family:var(--font-serif);font-size:clamp(22px,2.6vw,30px);}
h3{font-size:19px;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;background:var(--c-primary-soft);}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;}
a:hover,a:focus{color:var(--c-accent);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
/* Foundation 默认样式覆盖 */
.button,.button.primary,.button.secondary{background-color:var(--c-primary);color:#fff;border-radius:var(--r-btn);}
.button:hover{background-color:var(--c-primary-deep);color:#fff;}
.callout{border-radius:var(--r-card);border-color:var(--c-line);background:#fff;}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 28px;}
/* ===== 布局骨架 ===== */
.app{display:flex;align-items:stretch;min-height:100vh;}
.side-shell{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:70;
}
.side-brand{display:flex;align-items:center;gap:10px;padding:22px 20px 18px;border-bottom:1px solid var(--c-line);}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;
  background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:17px;line-height:1;
}
.side-brand-text{font-size:16px;font-weight:700;color:var(--c-ink);line-height:1.3;}
.side-brand-text small{display:block;font-size:12px;font-weight:400;color:var(--c-ink-3);letter-spacing:.06em;margin-top:2px;}
.side-nav{padding:18px 12px;flex:1 1 auto;overflow-y:auto;}
.side-nav-title{font-size:12px;letter-spacing:.14em;color:var(--c-ink-3);margin:0 0 10px 10px;}
.side-nav ul li{margin-bottom:4px;}
.side-nav a{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;
  font-size:15px;color:var(--c-ink-2);
  border-left:3px solid transparent;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.side-nav a i{width:18px;text-align:center;font-size:15px;color:#93A19D;transition:color .18s ease-out;}
.side-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.side-nav a:hover i{color:var(--c-primary);}
.side-nav a.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;border-left-color:var(--c-primary);}
.side-nav a.active i{color:var(--c-primary);}
.side-foot{padding:16px 20px 22px;border-top:1px solid var(--c-line);font-size:12.5px;color:var(--c-ink-3);line-height:1.7;}
.side-foot strong{display:block;color:var(--c-ink-2);font-size:13px;margin-bottom:4px;}
.app-body{margin-left:var(--sidebar-w);flex:1 1 auto;min-width:0;display:flex;flex-direction:column;}
.main{flex:1 1 auto;}
.mobile-bar{display:none;position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line);align-items:center;justify-content:space-between;padding:12px 18px;}
.mobile-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;color:var(--c-ink);}
.mobile-brand .brand-mark{width:28px;height:28px;flex:0 0 28px;font-size:15px;border-radius:8px;}
.hamburger{width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font-size:16px;transition:background-color .18s ease-out,border-color .18s ease-out;}
.hamburger:hover{background:var(--c-primary-soft);border-color:rgba(30,91,84,.35);}
.drawer-mask{position:fixed;inset:0;background:rgba(16,32,29,.4);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:65;}
.drawer-mask.show{opacity:1;visibility:visible;}
/* ===== 页头 ===== */
.page-head{padding:clamp(32px,4.6vw,60px) 0 0;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);margin-bottom:18px;white-space:nowrap;overflow:hidden;}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-accent);}
.crumb-current{color:var(--c-ink-2);overflow:hidden;text-overflow:ellipsis;}
.page-head h1{max-width:920px;margin-bottom:18px;}
.lede{font-size:17px;line-height:1.85;color:var(--c-ink-2);max-width:840px;margin:0;}
/* ===== 分类封面 ===== */
.cat-cover{position:relative;margin:34px 0 0;height:clamp(200px,24vw,258px);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.cat-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border:none;}
.cat-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(30,91,84,.72),rgba(30,91,84,.32));}
.cover-seal{
  position:absolute;right:18px;bottom:18px;z-index:2;
  width:40px;height:40px;border-radius:10px;
  background:rgba(255,255,255,.22);border:1px solid rgba(255,255,255,.5);
  color:#fff;font-family:var(--font-serif);font-size:18px;
  display:flex;align-items:center;justify-content:center;
}
/* ===== 板块 ===== */
.section{padding:var(--gap-section) 0 0;}
.section-head{position:relative;display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px;padding-bottom:16px;border-bottom:1px solid var(--c-line);}
.section-head::after{content:"";position:absolute;left:0;bottom:-1px;width:64px;height:2px;background:var(--c-accent);}
.section-sub{font-size:14.5px;color:var(--c-ink-3);margin:0;max-width:620px;line-height:1.75;}
.section-head h2{margin:0;}
/* ===== 目录 ===== */
.toc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:48px;}
.toc-item{
  display:flex;align-items:flex-start;gap:16px;
  min-height:60px;padding:16px 8px;border-bottom:1px solid var(--c-line);
  transition:transform .18s ease-out,background-color .18s ease-out;
}
.toc-item:hover{transform:translateX(4px);background:rgba(230,239,236,.55);color:var(--c-primary);}
.toc-num{font-family:var(--font-serif);font-size:22px;line-height:1.25;color:var(--c-accent);flex:0 0 40px;}
.toc-body{min-width:0;flex:1 1 auto;}
.toc-body strong{display:block;font-size:17px;color:var(--c-ink);margin-bottom:2px;transition:color .18s ease-out;}
.toc-item:hover .toc-body strong{color:var(--c-primary);}
.toc-body em{font-style:normal;font-size:14px;line-height:1.7;color:var(--c-ink-3);}
.toc-arrow{margin-left:auto;padding-top:7px;font-size:13px;color:var(--c-ink-3);transition:transform .18s ease-out,color .18s ease-out;}
.toc-item:hover .toc-arrow{color:var(--c-accent);transform:translateX(3px);}
/* ===== 图文交替条目 ===== */
.zig-list{display:flex;flex-direction:column;gap:40px;}
.zig-row{gap:36px;}
.zig-row > .cell{padding-left:0;padding-right:0;min-width:0;}
.zig-row.rev .zig-media{order:2;}
.zig-row.rev .zig-text{order:1;}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--c-line);box-shadow:var(--sh-1);transition:box-shadow .18s ease-out;}
.zig-row:hover .zig-media img{box-shadow:var(--sh-2);}
.zig-text{flex:1 1 auto;}
.pill{display:inline-block;font-size:12.5px;line-height:1.6;padding:3px 12px;border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary);margin-bottom:12px;}
.zig-text h3{font-size:20px;margin-bottom:12px;}
.zig-text > p{font-size:15.5px;line-height:1.85;color:var(--c-ink-2);margin-bottom:14px;}
.mini-list{margin:0 0 16px;}
.mini-list li{position:relative;padding-left:16px;font-size:14.5px;line-height:1.8;color:var(--c-ink-2);margin-bottom:4px;}
.mini-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--c-accent);}
.text-link{display:inline-block;font-size:15px;font-weight:700;padding-bottom:2px;border-bottom:2px solid var(--c-primary);transition:border-color .18s ease-out,color .18s ease-out;}
.text-link:hover{border-color:var(--c-accent);color:var(--c-accent);}
/* ===== 推荐卡片 ===== */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rec-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.rec-card:hover{transform:translateY(-2px);border-color:rgba(30,91,84,.3);box-shadow:var(--sh-2);}
.rec-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border:none;border-radius:0;border-bottom:1px solid var(--c-line);}
.rec-body{display:flex;flex-direction:column;flex:1 1 auto;padding:20px;}
.rec-body h3{font-size:17.5px;margin-bottom:10px;transition:color .18s ease-out;}
.rec-card:hover .rec-body h3{color:var(--c-primary);}
.rec-body p{font-size:14px;line-height:1.75;color:var(--c-ink-3);margin-bottom:16px;}
.rec-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-ink-3);}
.rec-meta a{font-weight:700;font-size:13.5px;}
/* ===== CTA ===== */
.cta-band{padding:var(--gap-section) 0 0;}
.cta-inner{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:clamp(28px,4vw,44px);
  background:var(--c-primary);border-radius:var(--r-lg);color:#fff;
}
.cta-inner::before{content:"";position:absolute;right:-50px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.06);}
.cta-inner h2{color:#fff;font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-inner p{color:rgba(255,255,255,.86);font-size:15px;line-height:1.8;margin:0;max-width:560px;}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease-out,background-color .16s ease-out,border-color .16s ease-out,color .16s ease-out;
}
.btn-primary{background:#fff;color:var(--c-primary);}
.btn-primary:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-ghost:hover{background:rgba(255,255,255,.13);color:#fff;border-color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
/* ===== FAQ ===== */
.faq-list{border-top:1px solid var(--c-primary);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 4px;background:none;border:0;text-align:left;cursor:pointer;}
.faq-q h3{font-size:17px;font-weight:700;color:var(--c-ink);margin:0;}
.faq-q:hover h3{color:var(--c-primary);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-size:12px;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{font-size:15px;line-height:1.85;color:var(--c-ink-2);margin:0;padding:0 4px 20px;max-width:880px;}
/* ===== 页脚 ===== */
.site-footer{margin-top:var(--gap-section);background:var(--c-footer);color:rgba(255,255,255,.85);padding:56px 0 24px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.site-footer .brand-mark{background:rgba(255,255,255,.14);}
.site-footer h4{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.7);margin:0 0 14px;}
.site-footer ul li{margin-bottom:10px;}
.site-footer a{color:rgba(255,255,255,.85);font-size:14px;}
.site-footer a:hover{color:#9FD4C9;}
.site-footer p{color:rgba(255,255,255,.72);font-size:13.5px;line-height:1.75;margin:0;}
.qr{width:96px;height:96px;margin-top:16px;border:1px dashed rgba(255,255,255,.3);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(255,255,255,.5);}
.copyright{margin-top:40px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);}
/* ===== 响应式 ===== */
@media (max-width:1279px) and (min-width:1024px){
  .side-shell{width:88px;}
  .side-brand{justify-content:center;padding:22px 10px 18px;}
  .side-brand-text,.side-nav-title,.nav-label,.side-foot{display:none;}
  .side-nav{padding:18px 8px;}
  .side-nav a{justify-content:center;padding:12px 0;}
  .app-body{margin-left:88px;}
  .side-shell:hover{width:252px;box-shadow:var(--sh-3);}
  .side-shell:hover .side-brand{justify-content:flex-start;padding:22px 20px 18px;}
  .side-shell:hover .side-brand-text{display:inline-block;}
  .side-shell:hover .side-nav-title{display:block;}
  .side-shell:hover .nav-label{display:inline;}
  .side-shell:hover .side-foot{display:block;}
  .side-shell:hover .side-nav a{justify-content:flex-start;padding:11px 12px;}
}
@media (max-width:1023px){
  .side-shell{width:280px;transform:translateX(-100%);transition:transform .28s ease;box-shadow:var(--sh-3);}
  .side-shell.open{transform:translateX(0);}
  .app-body{margin-left:0;}
  .mobile-bar{display:flex;}
  .wrap{padding:0 20px;}
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:640px){
  .zig-media{width:auto;flex:0 0 46%;}
  .zig-text{width:auto;flex:1 1 0;}
}
@media (max-width:767px){
  .toc-grid{grid-template-columns:1fr;column-gap:0;}
  .rec-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .page-head{padding-top:28px;}
  .cat-cover{height:190px;border-radius:14px;}
  .sec-title{font-size:22px;}
}
@media (max-width:639px){
  .zig-row{flex-direction:column;gap:20px;}
  .zig-row.rev{flex-direction:column;}
  .zig-row.rev .zig-media{order:0;}
  .zig-row.rev .zig-text{order:0;}
  .zig-row > .cell{width:100%;flex:0 0 100%;padding-left:0;padding-right:0;}
  .zig-media img{aspect-ratio:16/9;}
}
@media (max-width:519px){
  .wrap{padding:0 16px;}
  h1{font-size:27px;}
  .lede{font-size:15.5px;}
  .toc-num{font-size:19px;flex:0 0 34px;}
  .toc-body strong{font-size:16px;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .copyright{flex-direction:column;gap:6px;}
}