/* roulang page: index */
:root{
  --brand:#0E4B45;
  --brand-900:#07332F;
  --brand-600:#1C6B61;
  --brand-50:#E8F1EE;
  --accent:#C2603A;
  --gold:#D8A13C;
  --bg:#F6F3ED;
  --surface:#FFFFFF;
  --surface-2:#EFEAE1;
  --ink:#1F2B29;
  --ink-2:#55645F;
  --line:#E3DCD0;
  --success:#2E7D5B;
  --warn:#C98A1C;
  --error:#B4432F;
  --info:#2F6E8F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-hero:20px;
  --shadow-sm:0 1px 2px rgba(31,43,41,.06),0 1px 3px rgba(31,43,41,.04);
  --shadow-md:0 6px 20px rgba(7,51,47,.08);
  --sidebar-w:232px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--accent);}
a:visited{color:var(--brand-600);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;font-weight:600;line-height:1.5;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:var(--brand-50);color:var(--brand-900);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (max-width:767px){.container{padding:0 18px;}}

/* ---------- 左侧竖向导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--brand-900);
  padding:26px 14px 22px;
  display:flex;flex-direction:column;gap:26px;
  overflow-y:auto;z-index:90;
}
.sidebar::-webkit-scrollbar{width:6px;}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:3px;}
.brand{display:flex;align-items:center;gap:10px;padding:0 8px;}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border:1px solid var(--gold);border-radius:8px;
  display:grid;place-items:center;color:var(--gold);font-size:12px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.22;min-width:0;}
.brand-name{color:#fff;font-size:22px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand-sub{color:rgba(255,255,255,.55);font-size:12px;letter-spacing:.14em;white-space:nowrap;}
.side-group{display:flex;flex-direction:column;gap:2px;}
.side-label{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.42);padding:0 12px 8px;}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:46px;padding:0 12px;border-radius:10px;
  color:rgba(255,255,255,.78);font-size:15px;
  transition:background .15s ease-out,color .15s ease-out;
}
.side-link i{width:18px;text-align:center;font-size:14px;color:rgba(255,255,255,.42);flex:0 0 18px;}
.side-link:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none;}
.side-link:hover i{color:var(--gold);}
.side-link.active{background:rgba(255,255,255,.06);color:#fff;font-weight:600;}
.side-link.active i{color:var(--gold);}
.side-link.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:2px;background:var(--accent);
}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;padding:0 4px;}
.side-foot .side-note{font-size:11px;line-height:1.7;color:rgba(255,255,255,.38);letter-spacing:.02em;}
.side-close{
  display:none;position:absolute;top:14px;right:12px;width:44px;height:44px;
  background:transparent;border:1px solid rgba(255,255,255,.18);border-radius:10px;
  color:#fff;font-size:16px;cursor:pointer;place-items:center;
}
.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:600;font-family:inherit;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--brand-900);color:#fff;text-decoration:none;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 1px 3px rgba(0,0,0,.22);}
.btn-primary:visited{color:#fff;}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);text-decoration:none;}
.btn-ghost:visited{color:var(--brand);}
.btn-block{width:100%;}
.btn-lg{padding:0 22px;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:70;height:60px;
  background:var(--brand-900);align-items:center;justify-content:space-between;
  padding:0 14px;
}
.menu-btn{
  width:44px;height:44px;display:grid;place-items:center;
  background:transparent;border:1px solid rgba(255,255,255,.2);border-radius:10px;
  color:#fff;font-size:17px;cursor:pointer;transition:background .15s ease-out;
}
.menu-btn:hover{background:rgba(255,255,255,.08);}
.overlay{
  position:fixed;inset:0;background:rgba(7,51,47,.5);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;z-index:85;
}
.overlay.show{opacity:1;visibility:visible;}

/* ---------- 外壳布局 ---------- */
.shell{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
main{flex:1;}

/* ---------- 首屏 ---------- */
.hero{
  background:linear-gradient(180deg,#FFFFFF 0%,#FBF9F5 100%);
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:56px;align-items:center;padding:72px 0;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--brand-600);font-weight:600;
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--accent);border-radius:2px;}
.hero h1{margin-bottom:18px;letter-spacing:-.01em;}
.hero-sub{font-size:18px;color:var(--ink-2);line-height:1.8;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.hero-badges li{
  font-size:12px;padding:5px 13px;border-radius:999px;
  border:1px solid var(--gold);color:var(--brand);background:rgba(216,161,60,.07);
}
.hero-media{position:relative;border-radius:var(--r-hero);overflow:hidden;box-shadow:var(--shadow-md);background:var(--surface-2);}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(7,51,47,.12);pointer-events:none;}

/* ---------- 数据条 ---------- */
.stats{background:var(--surface-2);padding:56px 0;border-bottom:1px solid var(--line);}
.stats-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:48px;align-items:center;}
.stats-lead h2{letter-spacing:-.005em;}
.stats-note{margin-top:14px;font-size:14px;color:var(--ink-2);line-height:1.85;}
.stats-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.stat{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 14px;text-align:center;box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.stat:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--brand-600);}
.stat-num{display:block;font-size:32px;font-weight:700;color:var(--brand-600);line-height:1.2;font-family:Inter,"Noto Sans SC",sans-serif;}
.stat-label{display:block;font-size:13px;color:var(--ink-2);margin-top:6px;line-height:1.6;}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0;border-top:1px solid var(--line);}
.section-surface{background:var(--surface);}
.section-alt{background:var(--bg);}
.section-tint{background:var(--surface-2);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head .section-desc{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:640px;line-height:1.85;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand-600);white-space:nowrap;
}
.text-link i{transition:transform .18s ease-out;}
.text-link:hover{color:var(--accent);text-decoration:none;}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 故事区块 ---------- */
.story-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:56px;align-items:center;}
.story-media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--shadow-sm);background:var(--surface-2);}
.story-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.story-copy h2{padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:6px;}
.story-copy h3{font-size:20px;font-weight:600;margin:26px 0 10px;padding-left:14px;position:relative;}
.story-copy h3::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--accent);
}
.story-copy p{font-size:16px;color:var(--ink-2);line-height:1.9;}

/* ---------- 卡片 ---------- */
.pick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--brand-600);}
.card-icon{
  width:40px;height:40px;border-radius:10px;background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-size:17px;margin-bottom:16px;
}
.card h3{margin-bottom:10px;transition:color .18s ease-out;}
.card:hover h3{color:var(--brand-600);}
.card p{font-size:15px;color:var(--ink-2);line-height:1.85;margin-bottom:18px;}
.card .text-link{margin-top:auto;}

/* ---------- 最新信息 ---------- */
.post-feature{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-sm);margin-bottom:20px;
  transition:box-shadow .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.post-feature:hover{box-shadow:var(--shadow-md);border-color:var(--brand-600);transform:translateY(-2px);}
.post-feature-link{display:grid;grid-template-columns:260px minmax(0,1fr);color:var(--ink);}
.post-feature-link:hover{color:var(--ink);text-decoration:none;}
.post-feature-link:visited{color:var(--ink);}
.post-feature-media{background:var(--surface-2);overflow:hidden;}
.post-feature-media img{width:100%;height:100%;min-height:208px;object-fit:cover;}
.post-feature-body{padding:26px 28px;display:flex;flex-direction:column;gap:12px;}
.post-feature-body h3{font-size:20px;font-weight:600;transition:color .18s ease-out;}
.post-feature:hover .post-feature-body h3{color:var(--brand-600);}
.post-feature-body p{font-size:15px;color:var(--ink-2);line-height:1.85;}
.post-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:auto;font-size:13px;color:var(--ink-2);}
.badge{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
  font-size:12px;background:var(--brand-50);color:var(--brand-600);font-weight:600;letter-spacing:.02em;
}
.badge-gold{background:transparent;border:1px solid var(--gold);color:var(--brand);font-weight:600;}
.post-meta .arrow{margin-left:auto;color:var(--brand-600);transition:transform .18s ease-out;}
.post-feature:hover .post-meta .arrow{transform:translateX(3px);}
.post-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.post-item + .post-item{border-top:1px solid var(--line);}
.post-item-link{
  display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:18px;
  min-height:56px;padding:12px 22px;color:var(--ink);font-size:15px;
  transition:background .15s ease-out;
}
.post-item-link:hover{background:var(--brand-50);color:var(--brand-600);text-decoration:none;}
.post-item-link:visited{color:var(--ink);}
.post-item-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.post-item-cat{font-size:12px;color:var(--brand-600);background:var(--brand-50);padding:3px 10px;border-radius:999px;white-space:nowrap;}
.post-item-time{font-size:13px;color:var(--ink-2);text-align:right;white-space:nowrap;font-family:Inter,"Noto Sans SC",sans-serif;}
.empty-state{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;color:var(--ink-2);
}
.empty-state i{font-size:24px;color:var(--brand-600);display:block;margin-bottom:12px;}
.empty-state span{font-size:14px;}

/* ---------- 信任背书 ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.trust-item{border-top:1px solid var(--line);padding-top:22px;}
.trust-item i{font-size:24px;color:var(--brand-600);}
.trust-item h3{font-size:14px;font-weight:600;margin:14px 0 8px;letter-spacing:.01em;}
.trust-item p{font-size:14px;color:var(--ink-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;padding:20px 0;background:transparent;border:0;text-align:left;
  font-family:inherit;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--brand-600);}
.faq-q i{color:var(--brand-600);flex:0 0 auto;font-size:14px;transition:transform .18s ease-out;}
.faq-item.open .faq-q i{transform:rotate(180deg);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease-out;}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{padding:0 0 22px;font-size:15px;color:var(--ink-2);line-height:1.85;max-width:820px;}

/* ---------- 订阅 CTA ---------- */
.cta{background:var(--brand);padding:64px 0;}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:40px;align-items:center;}
.cta h2{color:#fff;margin-bottom:12px;}
.cta p{font-size:15px;color:rgba(255,255,255,.74);line-height:1.85;}
.cta-form{display:flex;gap:10px;}
.cta-form input{
  flex:1;min-width:0;height:48px;border-radius:var(--r-btn);border:1px solid transparent;
  padding:0 16px;font-size:15px;font-family:inherit;color:var(--ink);background:#fff;
}
.cta-form input::placeholder{color:#96A19D;}
.cta-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,96,58,.28);}
.cta-note{grid-column:2;font-size:12px;color:rgba(255,255,255,.52);margin-top:12px;line-height:1.7;}
.cta-msg{font-size:13px;color:#fff;margin-top:10px;display:none;}
.cta-msg.show{display:block;}

/* ---------- 页脚 ---------- */
footer{background:var(--brand-900);padding:56px 0 0;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:42px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-name{font-size:20px;}
.footer-brand .brand-sub{font-size:11px;}
.footer-about{font-size:14px;color:rgba(255,255,255,.66);line-height:1.85;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-col span{color:rgba(255,255,255,.66);font-size:14px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);line-height:1.8;
}
.footer-bottom a{color:rgba(255,255,255,.62);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (min-width:1280px){
  :root{--sidebar-w:248px;}
}
@media (max-width:1023px){
  :root{--sidebar-w:0px;}
  .shell{margin-left:0;}
  .topbar{display:flex;}
  .sidebar{
    width:280px;transform:translateX(-100%);
    transition:transform .22s ease-out;z-index:90;
  }
  .sidebar.open{transform:translateX(0);}
  .side-close{display:grid;}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding:48px 0;}
  .stats-grid{grid-template-columns:1fr;gap:28px;}
  .story-grid{grid-template-columns:1fr;gap:32px;}
  .story-media{order:-1;}
  .trust-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .cta-note{grid-column:1;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767px){
  h1{font-size:28px;}
  h2{font-size:22px;}
  .hero-sub{font-size:16px;}
  .section{padding:48px 0;}
  .stats{padding:44px 0;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .pick-grid{grid-template-columns:1fr;}
  .card{padding:18px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:26px;}
  .post-feature-link{grid-template-columns:1fr;}
  .post-feature-media img{min-height:180px;aspect-ratio:16/10;}
  .post-feature-body{padding:20px;}
  .post-item-link{grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:12px 16px;}
  .post-item-time{display:none;}
  .cta{padding:48px 0;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .stats-cards{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand:#0E4B45;
  --brand-900:#07332F;
  --brand-600:#1C6B61;
  --brand-50:#E8F1EE;
  --accent:#C2603A;
  --gold:#D8A13C;
  --bg:#F6F3ED;
  --surface:#FFFFFF;
  --surface-2:#EFEAE1;
  --ink:#1F2B29;
  --ink-2:#55645F;
  --line:#E3DCD0;
  --success:#2E7D5B;
  --warn:#C98A1C;
  --error:#B4432F;
  --info:#2F6E8F;
  --radius:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(31,43,41,.06),0 1px 3px rgba(31,43,41,.04);
  --shadow-md:0 6px 20px rgba(7,51,47,.08);
  --sidebar:232px;
}
@media (min-width:1280px){:root{--sidebar:248px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--accent)}
a:visited{color:var(--brand-600)}
button{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);line-height:1.35}
p{margin:0 0 1.15em}
ul,ol{margin:0 0 1.15em}
h1{font-size:40px;line-height:1.25}
h2{font-size:28px;line-height:1.35}
h3{font-size:20px;font-weight:600;line-height:1.5}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-50);color:var(--brand-900)}

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

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:var(--brand-900);z-index:60;overflow-y:auto;
  display:flex;flex-direction:column;
}
.side-inner{padding:24px 16px 28px;display:flex;flex-direction:column;flex:1 0 auto;min-height:100%}
.side-brand{display:flex;align-items:center;gap:10px;padding:0 8px 22px;color:#fff}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border:1.5px solid var(--accent);border-radius:9px;
  display:grid;place-items:center;font-size:13px;font-weight:700;color:#fff;
  background:rgba(194,96,58,.16);letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:24px;font-weight:700;color:#fff;letter-spacing:.01em}
.brand-sub{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.72);margin-top:2px}
.side-label{display:block;font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.45);padding:14px 12px 8px}
.side-group{display:flex;flex-direction:column;gap:2px}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;min-height:46px;
  padding:0 12px;border-radius:10px;color:rgba(255,255,255,.78);font-size:15px;
  transition:background .15s ease-out,color .15s ease-out;
}
.side-link i{width:18px;text-align:center;font-size:14px;color:rgba(255,255,255,.55)}
.side-link:hover{background:rgba(255,255,255,.08);color:#fff}
.side-link:hover i{color:#fff}
.side-link.active{background:rgba(255,255,255,.06);color:#fff}
.side-link.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;background:var(--accent)}
.side-link.active i{color:var(--gold)}
.side-cta{margin-top:auto;padding:28px 8px 0}
.side-note{font-size:12px;line-height:1.7;color:rgba(255,255,255,.45);margin:12px 0 0}
.side-foot{font-size:12px;line-height:1.7;color:rgba(255,255,255,.38);padding:18px 8px 0}

/* ============ 移动端顶栏 / 抽屉 ============ */
.mobile-bar{display:none}
.drawer-close{display:none}
.scrim{
  position:fixed;inset:0;background:rgba(7,51,47,.5);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out;z-index:55;
}
.scrim.show{opacity:1;visibility:visible}

/* ============ 布局 ============ */
.layout{margin-left:var(--sidebar);display:flex;flex-direction:column;min-height:100vh}
.layout main{flex:1 0 auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;text-align:center;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 1px 3px rgba(0,0,0,.25)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-900)}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ============ 文章头部 ============ */
.post-hero{background:var(--surface);border-bottom:1px solid var(--line);padding:32px 0 40px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:20px}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--accent);text-decoration:underline}
.crumb .sep{color:#C9C1B2}
.crumb .current{color:var(--ink-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-title{font-size:32px;line-height:1.4;margin:12px 0 18px;max-width:900px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:13px;color:var(--ink-2)}
.badge{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-600);font-size:13px;font-weight:600;
}
.badge-gold{background:transparent;border:1px solid var(--gold);color:#8A6417}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item i{font-size:12px;color:var(--brand-600)}

/* ============ 文章正文 ============ */
.article-shell{max-width:1200px;margin:0 auto;padding:48px 24px 56px;width:100%}
.article-body{
  max-width:760px;margin:0 auto;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
  padding:44px 52px;overflow-x:auto;
}
.article-body > *:first-child{margin-top:0}
.article-body p{font-size:16px;line-height:1.9;margin:0 0 1.15em}
.article-body > p:first-of-type{font-size:17px;color:#2A3835}
.article-body h2{
  position:relative;font-size:24px;line-height:1.45;margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:2px;background:var(--brand-600);
}
.article-body h3{font-size:19px;margin:28px 0 12px}
.article-body h4{font-size:17px;margin:22px 0 10px}
.article-body ul,.article-body ol{padding-left:22px;line-height:1.85}
.article-body li{margin-bottom:.4em}
.article-body ul li::marker{color:var(--accent)}
.article-body ol li::marker{color:var(--accent);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--surface-2);
  border-left:3px solid var(--gold);border-radius:0 10px 10px 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:24px 0;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-2);margin-top:8px;text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border-radius:12px;overflow:hidden}
.article-body thead th{background:var(--brand-900);color:#fff;text-align:left;padding:12px 14px;font-weight:600;white-space:nowrap}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.article-body tbody tr:nth-child(even){background:var(--surface-2)}
.article-body a{color:var(--brand-600);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article-body a:hover{color:var(--accent);text-decoration-thickness:2px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body code{background:var(--surface-2);padding:2px 6px;border-radius:6px;font-size:14px}

.post-foot{margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:13px;
  transition:border-color .18s ease-out,color .18s ease-out,background .18s ease-out;
}
.tag:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-50)}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-600)}
.back-link i{transition:transform .18s ease-out}
.back-link:hover i{transform:translateX(-3px)}

/* ============ 空状态 ============ */
.empty-state{
  text-align:center;padding:56px 20px;color:var(--ink-2);
}
.empty-state i{font-size:34px;color:var(--gold);display:block;margin-bottom:16px}
.empty-state p{font-size:16px;margin:0 0 22px}

/* ============ 相关推荐 ============ */
.related{background:var(--surface-2);border-top:1px solid var(--line);padding:64px 0}
.section-head{margin-bottom:28px}
.section-label{display:block;font-size:13px;letter-spacing:.12em;color:var(--brand-600);margin-bottom:10px;position:relative;padding-left:16px}
.section-label::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:10px;height:3px;border-radius:2px;background:var(--accent)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;gap:14px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--brand-600)}
.card:hover h3{color:var(--brand-600)}
.card h3{transition:color .18s ease-out;font-size:18px}
.card p{font-size:14px;line-height:1.85;color:var(--ink-2);margin:0}
.card img{aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);width:100%}
.card-icon{
  width:40px;height:40px;border-radius:10px;background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-size:16px;flex:0 0 40px;
}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);margin-top:auto}
.link-arrow i{transition:transform .18s ease-out}
.card:hover .link-arrow i{transform:translateX(3px)}

/* ============ 结尾 CTA ============ */
.cta-band{background:var(--surface-2);border-top:1px solid var(--line);padding:48px 0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-inner h2{font-size:24px;margin-bottom:8px}
.cta-inner p{margin:0;color:var(--ink-2);font-size:15px;max-width:640px}

/* ============ 页脚 ============ */
footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{font-size:20px}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;margin:0}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px}
.footer-col a,.footer-col span{color:rgba(255,255,255,.72);font-size:14px;line-height:1.7}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.75)}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .mobile-bar{
    display:flex;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
    background:var(--brand-900);align-items:center;justify-content:space-between;
    padding:0 16px;box-shadow:0 2px 12px rgba(7,51,47,.24);
  }
  .mobile-bar .brand-text{align-items:flex-start}
  .mobile-bar .brand-name{font-size:18px}
  .mobile-bar .brand-sub{font-size:10px;letter-spacing:.12em;margin-top:1px}
  .hamburger{
    width:44px;height:44px;display:grid;place-items:center;background:transparent;
    border:1px solid rgba(255,255,255,.26);border-radius:10px;color:#fff;font-size:16px;cursor:pointer;
  }
  .hamburger:hover{background:rgba(255,255,255,.1)}
  .sidebar{
    width:280px;transform:translateX(-100%);
    transition:transform .2s ease-out;padding-top:8px;
  }
  .sidebar.open{transform:translateX(0)}
  .drawer-close{
    display:grid;place-items:center;position:absolute;top:12px;right:12px;
    width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.24);
    background:transparent;color:#fff;font-size:16px;cursor:pointer;
  }
  .drawer-close:hover{background:rgba(255,255,255,.1)}
  .layout{margin-left:0;padding-top:60px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .post-hero{padding:24px 0 30px}
  .post-title{font-size:24px;margin:10px 0 16px}
  .article-shell{padding:28px 18px 40px}
  .article-body{padding:24px 20px;border-radius:12px}
  .article-body h2{font-size:20px;margin:32px 0 14px}
  .article-body h3{font-size:17px}
  .article-body > p:first-of-type{font-size:16px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .btn{width:100%}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner .btn{width:100%}
  .related{padding:44px 0}
  .cta-band{padding:36px 0}
  footer{padding:48px 0 0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-about{max-width:none}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category1 */
:root{
  --brand:#0E4B45;
  --brand-900:#07332F;
  --brand-600:#1C6B61;
  --brand-50:#E8F1EE;
  --accent:#C2603A;
  --gold:#D8A13C;
  --bg:#F6F3ED;
  --surface:#FFFFFF;
  --surface-2:#EFEAE1;
  --ink:#1F2B29;
  --ink-2:#55645F;
  --line:#E3DCD0;
  --success:#2E7D5B;
  --warn:#C98A1C;
  --error:#B4432F;
  --info:#2F6E8F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-hero:20px;
  --shadow-sm:0 1px 2px rgba(31,43,41,.06),0 1px 3px rgba(31,43,41,.04);
  --shadow-md:0 6px 20px rgba(7,51,47,.08);
  --sidebar:232px;
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color 180ms ease-out;}
a:hover{color:var(--accent);text-decoration:underline;text-decoration-thickness:2px;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;}
p{margin:0 0 1.15em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-900);color:#fff;padding:10px 16px;z-index:200;}
.skip-link:focus{left:12px;top:12px;}

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

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar);
  background:var(--brand-900);
  display:flex;flex-direction:column;
  padding:24px 18px 20px;
  z-index:80;
  overflow-y:auto;
}
@media (min-width:1280px){:root{--sidebar:248px;}}
.brand{display:flex;align-items:center;gap:10px;margin-bottom:28px;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;
  border:2px solid var(--accent);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.02em;
  font-family:Inter,system-ui,sans-serif;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{color:#fff;font-size:24px;font-weight:700;letter-spacing:.01em;}
.brand-sub{color:rgba(255,255,255,.62);font-size:12px;letter-spacing:.14em;}
.side-group{display:flex;flex-direction:column;gap:4px;}
.side-label{
  font-size:13px;letter-spacing:.12em;color:rgba(255,255,255,.45);
  padding:0 0 8px 12px;display:block;position:relative;
}
.side-label::before{
  content:"";position:absolute;left:0;top:6px;width:3px;height:12px;background:var(--gold);border-radius:2px;
}
.side-link{
  display:flex;align-items:center;gap:10px;
  min-height:46px;padding:0 12px;border-radius:10px;
  color:rgba(255,255,255,.8);font-size:15px;
  text-decoration:none;position:relative;
  transition:background 150ms ease-out,color 150ms ease-out;
}
.side-link i{width:18px;text-align:center;font-size:14px;color:rgba(255,255,255,.6);}
.side-link:hover{background:rgba(255,255,255,.08);color:#fff;text-decoration:none;}
.side-link:hover i{color:#fff;}
.side-link.active{background:rgba(255,255,255,.06);color:#fff;font-weight:600;}
.side-link.active i{color:var(--accent);}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
}
.side-divider{height:1px;background:rgba(255,255,255,.12);margin:18px 0;}
.side-mini{display:flex;flex-direction:column;gap:2px;}
.side-mini a{
  display:flex;align-items:center;gap:8px;min-height:40px;padding:0 12px;border-radius:9px;
  color:rgba(255,255,255,.66);font-size:14px;text-decoration:none;
  transition:background 150ms ease-out,color 150ms ease-out;
}
.side-mini a:hover{background:rgba(255,255,255,.07);color:#fff;text-decoration:none;}
.side-cta{margin-top:auto;padding-top:20px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  text-decoration:none;transition:all 180ms ease-out;white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);text-decoration:none;}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 1px 3px rgba(0,0,0,.22);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);text-decoration:none;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;cursor:not-allowed;}
.side-legal{font-size:12px;color:rgba(255,255,255,.42);line-height:1.7;margin-top:14px;}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:70;
  height:60px;background:var(--brand-900);
  align-items:center;justify-content:space-between;
  padding:0 14px;
}
.topbar .brand{margin:0;gap:8px;}
.topbar .brand-mark{width:28px;height:28px;flex:0 0 28px;border-radius:8px;font-size:11px;}
.topbar .brand-name{font-size:18px;}
.topbar .brand-sub{font-size:10px;letter-spacing:.12em;}
.menu-btn{
  width:44px;height:44px;border-radius:10px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);color:#fff;font-size:17px;
  display:flex;align-items:center;justify-content:center;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,51,47,.5);
  opacity:0;visibility:hidden;transition:opacity 180ms ease-out;z-index:75;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer-close{
  position:absolute;right:12px;top:14px;width:44px;height:44px;border-radius:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  color:#fff;font-size:16px;display:none;align-items:center;justify-content:center;
}

/* ============ 主体 ============ */
.main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}
main{flex:1;}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;
  background-color:var(--brand-900);
  background-image:linear-gradient(rgba(7,51,47,.86),rgba(7,51,47,.9)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  padding:56px 0 52px;
  color:#fff;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.68);margin-bottom:18px;}
.breadcrumb a{color:rgba(255,255,255,.82);text-decoration:none;}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb i{font-size:10px;opacity:.6;}
.breadcrumb .current{color:rgba(255,255,255,.6);}
.page-hero h1{
  color:#fff;font-size:40px;line-height:1.25;font-weight:700;margin-bottom:16px;
  max-width:820px;
}
.page-hero .lead{
  font-size:16px;line-height:1.9;color:rgba(255,255,255,.82);
  max-width:760px;margin:0 0 24px;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;padding:4px 10px;font-size:13px;
  background:var(--brand-50);color:var(--brand-600);
}
.badge i{font-size:11px;}
.badge-gold{background:transparent;border:1px solid var(--gold);color:#F0DCAE;}
.badge-solid{background:rgba(255,255,255,.12);color:#fff;}

/* ============ 内容布局 ============ */
.content-grid{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:48px;
  padding-top:56px;padding-bottom:80px;
}
.toc{position:sticky;top:32px;align-self:start;}
.toc-title{font-size:13px;letter-spacing:.12em;color:var(--brand-600);margin-bottom:14px;position:relative;padding-left:16px;}
.toc-title::before{content:"";position:absolute;left:0;top:7px;width:8px;height:2px;background:var(--accent);border-radius:2px;}
.toc ul{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.toc a{
  display:block;padding:8px 0 8px 14px;font-size:14px;color:var(--ink-2);
  border-left:2px solid transparent;margin-left:-1px;text-decoration:none;
  transition:all 180ms ease-out;
}
.toc a:hover{color:var(--brand-600);border-left-color:var(--brand-600);background:var(--brand-50);text-decoration:none;}

.content-col{min-width:0;max-width:820px;}
.section{margin-bottom:56px;scroll-margin-top:80px;}
.section h2{
  font-size:28px;line-height:1.35;font-weight:700;margin:0 0 20px;
  padding-left:14px;border-left:4px solid var(--brand-600);
}
.section h3{font-size:20px;line-height:1.5;font-weight:600;margin:28px 0 12px;}
.section p{color:var(--ink-2);font-size:16px;line-height:1.9;}
.section .intro{font-size:17px;color:var(--ink);}

/* 步骤时间线 */
.timeline{position:relative;padding-left:60px;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:2px;
  background:var(--line);border-radius:2px;
}
.step{position:relative;padding-bottom:32px;}
.step:last-child{padding-bottom:0;}
.step-num{
  position:absolute;left:-60px;top:0;
  width:40px;height:40px;border-radius:999px;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;font-family:Inter,system-ui,sans-serif;
  box-shadow:0 0 0 6px var(--bg);
}
.step h3{margin:6px 0 8px;font-size:20px;font-weight:600;}
.step p{color:var(--ink-2);margin:0 0 10px;font-size:15.5px;}
.step-meta{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--brand-600);background:var(--brand-50);
  border-radius:999px;padding:3px 10px;
}

/* 卡片 */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:box-shadow 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out;
}
.card:hover{box-shadow:var(--shadow-md);border-color:var(--brand-600);transform:translateY(-2px);}
.card:hover h3{color:var(--brand-600);}
.card h3{font-size:20px;font-weight:600;margin-bottom:10px;transition:color 180ms ease-out;}
.card p{color:var(--ink-2);font-size:15px;margin:0 0 12px;line-height:1.85;}
.card-icon{
  width:40px;height:40px;border-radius:10px;background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px;
}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}

/* 图片区块 */
.figure-block{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
  margin:8px 0 0;
}
.figure-block img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);
  background:var(--surface-2);
}
.figure-block figcaption{font-size:13px;color:var(--ink-2);margin-top:10px;}
.text-block h3{margin-top:0;}

/* 清单 */
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:8px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15.5px;color:var(--ink-2);line-height:1.85;
}
.check-list li i{color:var(--brand-600);font-size:14px;margin-top:6px;flex:0 0 14px;}
.check-list li strong{color:var(--ink);font-weight:600;}

/* 交替底色区块 */
.band{background:var(--surface-2);border-radius:16px;padding:32px;margin-bottom:56px;}
.band .section{margin-bottom:0;}
.band h2{border-left-color:var(--accent);}

/* 提示条 */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--brand-50);border-left:3px solid var(--gold);
  border-radius:0 12px 12px 0;padding:16px 20px;margin:20px 0;
}
.notice i{color:var(--gold);font-size:16px;margin-top:5px;}
.notice p{margin:0;font-size:15px;color:var(--ink-2);line-height:1.85;}

/* 表格 */
.table-wrap{
  border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:20px 0;
  overflow-x:auto;background:var(--surface);
}
table{width:100%;border-collapse:collapse;min-width:520px;}
thead th{
  background:var(--brand-900);color:#fff;font-size:14px;font-weight:600;
  text-align:left;padding:14px 18px;white-space:nowrap;
}
tbody td{padding:14px 18px;font-size:15px;color:var(--ink-2);border-top:1px solid var(--line);}
tbody tr:nth-child(even){background:var(--surface-2);}

/* FAQ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:17px;font-weight:600;color:var(--ink);
  transition:color 180ms ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-600);}
.faq-item summary .icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:999px;
  border:1px solid var(--line);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform 180ms ease-out,background 180ms ease-out;
}
.faq-item[open] summary .icon{transform:rotate(180deg);background:var(--brand-50);}
.faq-body{padding:0 0 20px;font-size:15px;color:var(--ink-2);line-height:1.85;}

/* 相关分类胶囊 */
.pill-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line);border-radius:999px;background:var(--surface);
  padding:11px 20px;font-size:14px;color:var(--ink);text-decoration:none;
  transition:all 180ms ease-out;min-height:44px;
}
.pill:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-50);text-decoration:none;transform:translateY(-2px);}
.pill i{font-size:12px;color:var(--brand-600);}

/* CTA 条 */
.cta-band{
  background:var(--brand-900);border-radius:16px;padding:40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  color:#fff;
}
.cta-band h2{
  color:#fff;font-size:24px;line-height:1.4;border:0;padding:0;margin:0 0 8px;
}
.cta-band p{color:rgba(255,255,255,.76);margin:0;font-size:15px;max-width:520px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn-white{background:#fff;color:var(--brand-900);}
.btn-white:hover{background:var(--brand-50);color:var(--brand-900);text-decoration:none;transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;text-decoration:none;}

/* 页脚 */
footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:56px 0 20px;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;}
.footer-brand .brand-name{font-size:20px;}
.footer-brand .brand-sub{font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.55);}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{color:rgba(255,255,255,.72);font-size:14px;text-decoration:none;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-thickness:1px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .content-grid{grid-template-columns:180px minmax(0,1fr);gap:32px;}
}
@media (max-width:1199px){
  .content-grid{grid-template-columns:minmax(0,1fr);gap:0;padding-top:40px;}
  .toc{position:static;margin-bottom:32px;}
  .toc ul{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;border-left:0;border-bottom:1px solid var(--line);gap:6px;padding-bottom:2px;}
  .toc a{border-left:0;border-bottom:2px solid transparent;padding:8px 12px;white-space:nowrap;}
  .toc a:hover{border-left-color:transparent;border-bottom-color:var(--brand-600);background:transparent;}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-100%);transition:transform 200ms ease-out;width:280px;padding-top:28px;}
  .sidebar.open{transform:translateX(0);}
  .drawer-close{display:flex;}
  .topbar{display:flex;}
  .main{margin-left:0;}
  .page-hero{padding:36px 0 40px;}
  .page-hero h1{font-size:32px;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .page-hero h1{font-size:28px;line-height:1.3;}
  .page-hero .lead{font-size:15.5px;}
  .section h2,.band h2{font-size:22px;margin-bottom:14px;}
  .section{margin-bottom:40px;}
  .content-grid{padding-bottom:48px;}
  .grid-2,.grid-3{grid-template-columns:minmax(0,1fr);gap:18px;}
  .figure-block{grid-template-columns:minmax(0,1fr);gap:20px;}
  .timeline{padding-left:52px;}
  .step-num{left:-52px;width:36px;height:36px;font-size:15px;}
  .timeline::before{left:17px;}
  .band{padding:22px 18px;margin-bottom:40px;}
  .cta-band{padding:28px 20px;}
  .cta-band h2{font-size:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{flex-direction:column;}
  .card{padding:18px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .pill{width:100%;justify-content:space-between;}
  .hero-badges .badge{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand:#0E4B45;
  --brand-900:#07332F;
  --brand-600:#1C6B61;
  --brand-50:#E8F1EE;
  --accent:#C2603A;
  --gold:#D8A13C;
  --bg:#F6F3ED;
  --surface:#FFFFFF;
  --surface-2:#EFEAE1;
  --ink:#1F2B29;
  --ink-2:#55645F;
  --line:#E3DCD0;
  --success:#2E7D5B;
  --warn:#C98A1C;
  --error:#B4432F;
  --info:#2F6E8F;
  --shadow-sm:0 1px 2px rgba(31,43,41,.06),0 1px 3px rgba(31,43,41,.04);
  --shadow-md:0 6px 20px rgba(7,51,47,.08);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-hero:20px;
  --side-w:232px;
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter",var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--brand-600);text-decoration:none;transition:color 180ms ease-out}
a:hover{color:var(--accent);text-decoration:underline;text-decoration-thickness:2px}
a:visited{color:var(--brand-600)}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--brand-900);
  display:flex;
  flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  transition:transform 180ms ease-out;
}
.side-close{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  color:rgba(255,255,255,.75);
  font-size:18px;
  border-radius:10px;
}
.side-close:hover{background:rgba(255,255,255,.08);color:#fff}
.side-brand{display:flex;align-items:center;gap:10px;padding:2px 8px 22px}
.brand-mark{
  flex:0 0 auto;
  width:32px;height:32px;
  border:2px solid var(--accent);
  border-radius:8px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-size:12px;font-weight:700;
  color:#fff;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:24px;font-weight:700;color:#fff;line-height:1.1;letter-spacing:.01em}
.brand-sub{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.62);line-height:1.5}
.side-group{display:flex;flex-direction:column;gap:2px}
.side-label{
  font-size:12px;letter-spacing:.16em;
  color:rgba(255,255,255,.42);
  padding:10px 12px 6px;
}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  min-height:46px;
  padding:0 12px;
  border-radius:8px;
  font-size:15px;
  color:rgba(255,255,255,.78);
  transition:background 150ms ease-out,color 150ms ease-out;
}
.side-link i{width:18px;font-size:14px;text-align:center;opacity:.85}
.side-link:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none}
.side-link.active{background:rgba(255,255,255,.06);color:#fff;font-weight:600}
.side-link.active::before{
  content:"";
  position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--accent);
}
.side-foot{margin-top:auto;padding-top:20px;display:grid;gap:12px}
.side-cta{
  display:flex;align-items:center;justify-content:center;
  height:46px;border-radius:var(--r-btn);
  background:var(--accent);color:#fff;
  font-size:15px;font-weight:600;
  transition:background 180ms ease-out,transform 180ms ease-out;
}
.side-cta:hover{background:#A84E2C;color:#fff;text-decoration:none;transform:translateY(-1px)}
.side-note{font-size:12px;line-height:1.7;color:rgba(255,255,255,.45);margin:0}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;
  align-items:center;justify-content:space-between;
  gap:12px;
  padding:0 16px;
  background:var(--brand-900);
  z-index:50;
  box-shadow:0 2px 12px rgba(7,51,47,.18);
}
.topbar-brand{display:flex;align-items:center;gap:8px;color:#fff}
.topbar-brand:hover{color:#fff;text-decoration:none}
.topbar-brand .brand-mark{width:28px;height:28px;font-size:11px}
.topbar-brand .brand-name{font-size:18px}
.topbar-brand .brand-sub{font-size:10px;letter-spacing:.1em}
.hamburger{
  width:44px;height:44px;
  display:grid;place-items:center;
  color:#fff;font-size:18px;border-radius:10px;
  transition:background 150ms ease-out;
}
.hamburger:hover{background:rgba(255,255,255,.1)}
.overlay{
  position:fixed;inset:0;
  background:rgba(7,51,47,.5);
  opacity:0;visibility:hidden;
  transition:opacity 180ms ease-out,visibility 180ms ease-out;
  z-index:55;
}
.overlay.show{opacity:1;visibility:visible}

/* ============ 页面主体 ============ */
.page{
  margin-left:var(--side-w);
  min-height:100vh;
  display:flex;flex-direction:column;
}
.main{flex:1;padding-bottom:8px}
.crumb{
  padding:28px 0 14px;
  font-size:13px;
  color:var(--ink-2);
  display:flex;align-items:center;gap:8px;
  border-bottom:1px solid var(--line);
  margin-bottom:24px;
}
.crumb a{color:var(--brand-600)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--ink-2)}

/* 页头 */
.page-hero{
  position:relative;
  border-radius:var(--r-hero);
  overflow:hidden;
  padding:56px 44px;
  color:#fff;
  background-image:linear-gradient(105deg,rgba(7,51,47,.92) 0%,rgba(7,51,47,.78) 58%,rgba(7,51,47,.6) 100%),url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-md);
}
.page-hero h1{
  font-size:40px;
  line-height:1.25;
  font-weight:700;
  max-width:760px;
  margin:14px 0 16px;
  color:#fff;
}
.page-hero .hero-eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.12em;
  color:#fff;
  border:1px solid var(--gold);
  border-radius:999px;
  padding:4px 12px;
}
.page-hero .hero-lead{
  font-size:17px;
  line-height:1.9;
  color:rgba(255,255,255,.86);
  max-width:720px;
  margin:0 0 24px;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid rgba(216,161,60,.75);
  color:rgba(255,255,255,.92);
  background:rgba(255,255,255,.06);
}
.badge i{font-size:11px;color:var(--gold)}

/* 布局：目录 + 内容 */
.layout{
  display:grid;
  grid-template-columns:200px minmax(0,1fr);
  gap:32px;
  margin-top:40px;
}
.toc-inner{position:sticky;top:24px;display:grid;gap:4px}
.toc-label{
  font-size:13px;letter-spacing:.12em;color:var(--brand-600);
  padding:0 0 10px 12px;
  position:relative;
}
.toc-label::before{
  content:"";position:absolute;left:0;top:8px;width:3px;height:14px;
  background:var(--brand-600);border-radius:2px;
}
.toc-link{
  display:block;
  padding:9px 12px;
  font-size:14px;
  color:var(--ink-2);
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  transition:background 150ms ease-out,color 150ms ease-out,border-color 150ms ease-out;
}
.toc-link:hover{background:var(--brand-50);color:var(--brand-600);text-decoration:none}
.toc-link.active{color:var(--brand-600);font-weight:600;border-left-color:var(--accent);background:var(--brand-50)}
.content-col{display:grid;gap:24px;min-width:0}

/* 板块面板 */
.panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:36px;
  box-shadow:var(--shadow-sm);
}
.panel-alt{background:var(--surface-2)}
.section-head{margin-bottom:26px;max-width:820px}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--brand-600);
  padding-left:14px;
  position:relative;
  margin-bottom:10px;
}
.eyebrow::before{
  content:"";position:absolute;left:0;top:7px;width:8px;height:2px;
  background:var(--accent);border-radius:2px;
}
.panel h2{font-size:28px;line-height:1.35;margin-bottom:14px}
.panel h3{font-size:20px;line-height:1.5;font-weight:600}
.lead{font-size:16px;line-height:1.9;color:var(--ink-2);margin:0}

/* 卡片网格 */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow 180ms ease-out,transform 180ms ease-out,border-color 180ms ease-out;
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--brand-600)}
.card:hover h3{color:var(--brand-600)}
.card h3{margin:14px 0 10px;transition:color 180ms ease-out}
.card p{font-size:15px;line-height:1.85;color:var(--ink-2);margin:0}
.card-icon{
  width:40px;height:40px;
  border-radius:10px;
  background:var(--brand-50);
  color:var(--brand-600);
  display:grid;place-items:center;
  font-size:17px;
}
.panel-alt .card{background:var(--surface)}

/* 对照双栏 */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.compare-col{border-radius:var(--r-card);padding:26px;border:1px solid var(--line)}
.compare-col h3{display:flex;align-items:center;gap:10px;font-size:20px;margin-bottom:18px}
.compare-col h3 i{font-size:20px}
.recommend{background:var(--brand-50);border-color:#CFE2DC}
.recommend h3 i{color:var(--success)}
.mistake{background:var(--surface-2);border-color:var(--line)}
.mistake h3 i{color:var(--warn)}
.cmp-list{display:grid;gap:14px}
.cmp-item{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.8;color:var(--ink-2)}
.cmp-item i{font-size:14px;margin-top:6px;flex:0 0 auto}
.recommend .cmp-item i{color:var(--success)}
.mistake .cmp-item i{color:var(--warn)}

/* 图文分栏 */
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:32px;align-items:start}
.figure{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface-2);
  aspect-ratio:16/10;
}
.figure img{width:100%;height:100%;object-fit:cover}
.figure figcaption{font-size:13px;color:var(--ink-2);padding:10px 14px;background:var(--surface);border-top:1px solid var(--line);margin:0}
.check-list{display:grid;gap:16px}
.check-item{display:flex;gap:12px;align-items:flex-start}
.check-item .num{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:999px;
  background:var(--brand-50);
  color:var(--brand-600);
  font-family:var(--font-num);
  font-size:13px;font-weight:700;
  display:grid;place-items:center;
  margin-top:4px;
}
.check-item h3{font-size:16px;margin-bottom:2px}
.check-item p{font-size:15px;line-height:1.85;color:var(--ink-2);margin:0}

/* 步骤时间线 */
.steps{display:grid;gap:0;position:relative}
.step{
  position:relative;
  padding:0 0 28px 52px;
}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";
  position:absolute;left:15px;top:30px;bottom:0;width:2px;
  background:var(--line);
}
.step:last-child::before{display:none}
.step-num{
  position:absolute;left:0;top:2px;
  width:32px;height:32px;
  border-radius:999px;
  background:var(--accent);
  color:#fff;
  font-family:var(--font-num);
  font-size:14px;font-weight:700;
  display:grid;place-items:center;
  box-shadow:0 2px 8px rgba(194,96,58,.28);
}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:15px;line-height:1.85;color:var(--ink-2);margin:0}

/* 标签 */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  font-size:13px;
  padding:4px 10px;
  border-radius:999px;
  background:var(--brand-50);
  color:var(--brand-600);
}
.tag-gold{border:1px solid var(--gold);color:#8A6520;background:transparent}

/* FAQ */
.faq{display:grid;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;
  padding:20px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  min-height:44px;
  transition:color 180ms ease-out;
}
.faq-q:hover{color:var(--brand-600)}
.faq-q i{
  flex:0 0 auto;
  font-size:14px;
  color:var(--brand-600);
  transition:transform 180ms ease-out;
}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 200ms ease-out;
}
.faq-a p{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
  padding:0 4px 22px;
  margin:0;
}

/* 相关分类胶囊 */
.pill-links{display:flex;flex-wrap:wrap;gap:12px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;
  padding:0 20px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:15px;
  color:var(--brand-600);
  background:var(--surface);
  transition:border-color 180ms ease-out,background 180ms ease-out,transform 180ms ease-out;
}
.pill:hover{border-color:var(--brand-600);background:var(--brand-50);color:var(--brand-600);text-decoration:none;transform:translateY(-1px)}
.pill i{font-size:12px;color:var(--accent)}

/* CTA 条 */
.cta-band{
  background:var(--brand-900);
  color:#fff;
  padding:64px 0;
  margin-top:48px;
}
.cta-band h2{font-size:28px;line-height:1.35;color:#fff;margin-bottom:12px}
.cta-band p{font-size:16px;line-height:1.9;color:rgba(255,255,255,.78);max-width:680px;margin:0 0 26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.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:600;
  transition:background 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out,border-color 180ms ease-out,color 180ms ease-out;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);text-decoration:none}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 1px 3px rgba(0,0,0,.2)}
.btn-ghost{background:transparent;color:var(--brand-600);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);text-decoration:none}
.btn-on-dark{background:var(--surface);color:var(--brand-900)}
.btn-on-dark:hover{background:#fff;color:var(--brand-900);text-decoration:none;transform:translateY(-1px)}
.btn-outline-dark{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35)}
.btn-outline-dark:hover{border-color:#fff;color:#fff;text-decoration:none;background:rgba(255,255,255,.08)}

/* ============ 页脚 ============ */
footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.72);
  padding:56px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-name{font-size:20px}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;margin:0}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:38px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (min-width:1280px){
  :root{--side-w:248px}
}
@media (max-width:1279px){
  .page-hero h1{font-size:36px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .sidebar{width:280px;transform:translateX(-100%);box-shadow:12px 0 32px rgba(7,51,47,.28)}
  .sidebar.open{transform:translateX(0)}
  .side-close{display:grid;place-items:center}
  .page{margin-left:0;padding-top:60px}
  .layout{grid-template-columns:minmax(0,1fr);gap:20px;margin-top:28px}
  .toc{position:sticky;top:60px;z-index:20;background:var(--bg);padding:10px 0;margin:-10px 0 0}
  .toc-inner{
    position:static;
    display:flex;
    gap:8px;
    overflow-x:auto;
    padding-bottom:6px;
    scrollbar-width:thin;
  }
  .toc-label{display:none}
  .toc-link{
    flex:0 0 auto;
    border:1px solid var(--line);
    border-radius:999px;
    padding:7px 14px;
    font-size:13px;
    background:var(--surface);
    white-space:nowrap;
  }
  .toc-link.active{border-color:var(--brand-600);background:var(--brand-50)}
  .split{grid-template-columns:minmax(0,1fr);gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .page-hero{padding:36px 22px;border-radius:16px}
  .page-hero h1{font-size:28px;margin:12px 0 14px}
  .page-hero .hero-lead{font-size:15.5px}
  .panel{padding:22px 18px}
  .panel h2{font-size:22px;margin-bottom:12px}
  .panel h3{font-size:18px}
  .grid-2{grid-template-columns:minmax(0,1fr);gap:18px}
  .compare{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:44px 0;margin-top:36px}
  .cta-band h2{font-size:22px}
  .btn{width:100%}
  .cta-actions{flex-direction:column}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
  .crumb{font-size:12px;padding-top:20px}
}
@media (max-width:520px){
  .side-brand .brand-name{font-size:22px}
  .step{padding-left:46px}
  .faq-q{font-size:16px}
}

/* roulang page: category3 */
:root{
  --brand:#0E4B45;
  --brand-900:#07332F;
  --brand-600:#1C6B61;
  --brand-50:#E8F1EE;
  --accent:#C2603A;
  --gold:#D8A13C;
  --bg:#F6F3ED;
  --surface:#FFFFFF;
  --surface-2:#EFEAE1;
  --ink:#1F2B29;
  --ink-2:#55645F;
  --line:#E3DCD0;
  --success:#2E7D5B;
  --warn:#C98A1C;
  --error:#B4432F;
  --info:#2F6E8F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-hero:20px;
  --shadow-sm:0 1px 2px rgba(31,43,41,.06),0 1px 3px rgba(31,43,41,.04);
  --shadow-md:0 6px 20px rgba(7,51,47,.08);
  --sidebar:232px;
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","Noto Sans SC",system-ui,sans-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(--font-cn);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--accent);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);}
p{margin:0 0 1.15em;}
button{font-family:inherit;}

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

/* ============ 左侧竖向导航 ============ */
.side{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar);
  background:var(--brand-900);
  display:flex;
  flex-direction:column;
  padding:24px 16px 20px;
  overflow-y:auto;
  z-index:60;
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:0 6px 20px;
  border-bottom:1px solid rgba(255,255,255,.10);
  margin-bottom:20px;
}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;
  border:2px solid var(--accent);
  border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-family:var(--font-num);font-weight:700;font-size:13px;
  letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{color:#fff;font-size:24px;font-weight:700;letter-spacing:.01em;}
.brand-sub{color:rgba(255,255,255,.62);font-size:12px;letter-spacing:.14em;}
.side-label{
  display:block;
  font-size:12px;letter-spacing:.16em;
  color:rgba(255,255,255,.45);
  padding:0 10px 10px;
}
.side-group{display:flex;flex-direction:column;gap:4px;}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:46px;
  padding:0 12px;
  border-radius:9px;
  color:rgba(255,255,255,.78);
  font-size:15px;
  transition:background .15s ease-out,color .15s ease-out;
}
.side-link i{width:18px;text-align:center;font-size:14px;opacity:.85;}
.side-link:hover{background:rgba(255,255,255,.08);color:#fff;text-decoration:none;}
.side-link.active{
  background:rgba(255,255,255,.06);
  color:#fff;
  font-weight:500;
}
.side-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
}
.side-foot{margin-top:auto;padding-top:24px;}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:46px;width:100%;
  background:var(--accent);
  color:#fff;font-size:15px;font-weight:500;
  border:none;border-radius:var(--radius-btn);
  cursor:pointer;
  transition:background .18s ease-out,transform .18s ease-out;
}
.side-cta:hover{background:var(--brand);color:#fff;transform:translateY(-1px);text-decoration:none;}
.side-cta:active{transform:translateY(0);box-shadow:inset 0 0 0 1px rgba(0,0,0,.15);}
.side-note{
  margin-top:16px;
  font-size:12px;line-height:1.7;
  color:rgba(255,255,255,.42);
}

/* ============ 移动端顶部条与抽屉 ============ */
.topbar{
  display:none;
  position:sticky;top:0;z-index:70;
  height:60px;
  background:var(--brand-900);
  align-items:center;justify-content:space-between;
  padding:0 14px;
}
.topbar .brand{padding:0;border:none;margin:0;gap:8px;}
.topbar .brand-mark{width:28px;height:28px;flex:0 0 28px;font-size:11px;border-radius:8px;}
.topbar .brand-name{font-size:18px;}
.topbar .brand-sub{font-size:10px;letter-spacing:.12em;}
.hamburger{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid rgba(255,255,255,.22);
  border-radius:10px;color:#fff;font-size:17px;cursor:pointer;
}
.hamburger:hover{background:rgba(255,255,255,.08);}
.overlay{
  display:none;position:fixed;inset:0;
  background:rgba(7,51,47,.5);z-index:80;
}
.overlay.show{display:block;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;
  background:var(--brand-900);
  z-index:90;
  transform:translateX(-100%);
  transition:transform .22s ease-out;
  padding:20px 16px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid rgba(255,255,255,.22);
  border-radius:10px;color:#fff;font-size:17px;cursor:pointer;
}
.drawer-close:hover{background:rgba(255,255,255,.08);}

/* ============ 主内容区 ============ */
.main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}
.page{padding:0 0 0;}

/* 页头 */
.page-hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(7,51,47,.82),rgba(7,51,47,.72)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:56px 0 52px;
}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.7);
  margin-bottom:20px;
}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:#fff;}
.crumb .sep{opacity:.5;}
.crumb .cur{color:#fff;font-weight:500;}
.page-hero h1{
  color:#fff;
  font-size:40px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:.01em;
  max-width:820px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 12px;margin-bottom:18px;
  border:1px solid var(--gold);border-radius:999px;
  font-size:13px;letter-spacing:.12em;color:#F3E3C4;
}
.hero-lead{
  margin:18px 0 0;
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:rgba(255,255,255,.86);
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  color:#fff;font-size:13px;
}
.chip i{font-size:12px;color:var(--gold);}

/* 目录条 */
.toc-bar{
  background:var(--surface);
  border-bottom:1px solid var(--line);
}
.toc-inner{
  display:flex;align-items:center;gap:10px;
  flex-wrap:wrap;
  padding:14px 0;
}
.toc-title{
  font-size:13px;letter-spacing:.12em;color:var(--brand-600);
  display:inline-flex;align-items:center;gap:8px;
  margin-right:4px;
}
.toc-title::before{content:"";width:16px;height:2px;background:var(--brand-600);border-radius:2px;}
.toc-link{
  display:inline-flex;align-items:center;
  height:36px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;
  font-size:14px;color:var(--ink-2);background:var(--bg);
  transition:all .18s ease-out;
}
.toc-link:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-50);text-decoration:none;}

/* 区块 */
.section{padding:64px 0;}
.section.alt{background:var(--surface-2);}
.section-head{max-width:760px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;letter-spacing:.12em;color:var(--brand-600);
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:3px;height:14px;background:var(--accent);border-radius:2px;display:inline-block;}
.section-head h2{font-size:28px;line-height:1.35;margin-bottom:12px;}
.section-head p{color:var(--ink-2);font-size:16px;margin:0;}

/* 图文分栏 */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.split.rev .split-media{order:2;}
.split-body h3{font-size:20px;font-weight:600;line-height:1.5;margin-bottom:12px;}
.split-body p{color:var(--ink-2);}
.split-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow-sm);
  background:var(--surface-2);
}
.step-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.step-list li{
  display:flex;gap:12px;
  font-size:15px;color:var(--ink-2);line-height:1.8;
}
.step-list .num{
  flex:0 0 24px;width:24px;height:24px;margin-top:4px;
  border-radius:50%;background:var(--accent);color:#fff;
  font-family:var(--font-num);font-size:12px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.step-list strong{color:var(--ink);font-weight:600;}

/* 表格 */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--surface);
  box-shadow:var(--shadow-sm);
  overflow-x:auto;
}
table{width:100%;border-collapse:collapse;min-width:640px;}
thead th{
  background:var(--brand-900);
  color:#fff;
  font-size:14px;font-weight:600;
  text-align:left;
  padding:14px 18px;
  letter-spacing:.02em;
  white-space:nowrap;
}
tbody td{
  padding:14px 18px;
  font-size:15px;
  color:var(--ink-2);
  border-top:1px solid var(--line);
  vertical-align:top;
}
tbody tr:nth-child(even){background:var(--surface-2);}
tbody td:first-child{color:var(--ink);font-weight:500;}
.tag-ok{
  display:inline-block;padding:2px 10px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-600);
  font-size:13px;white-space:nowrap;
}
.table-note{margin-top:12px;font-size:13px;color:var(--ink-2);}

/* 要点卡 */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--brand-600);}
.card:hover h3{color:var(--brand-600);}
.card-icon{
  width:40px;height:40px;border-radius:10px;
  background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;margin-bottom:16px;
}
.card h3{font-size:20px;font-weight:600;line-height:1.5;margin-bottom:10px;transition:color .18s ease-out;}
.card p{margin:0;font-size:15px;color:var(--ink-2);line-height:1.85;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--brand-600);font-weight:500;
  margin-top:14px;
}
.text-link i{font-size:12px;transition:transform .18s ease-out;}
.text-link:hover{color:var(--accent);text-decoration:none;}
.text-link:hover i{transform:translateX(3px);}

/* FAQ */
.faq{max-width:860px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:background .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--brand-50);}
.faq-item summary::after{
  content:"+";
  flex:0 0 26px;width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:50%;
  color:var(--brand-600);font-size:16px;font-weight:600;
  transition:transform .2s ease-out,background .18s ease-out;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);background:var(--brand-50);}
.faq-body{
  padding:0 22px 20px;
  font-size:15px;line-height:1.85;color:var(--ink-2);
  border-top:1px solid var(--line);
  padding-top:16px;
  margin-top:0;
}

/* 相关分类胶囊 */
.rel-grid{
  display:flex;flex-wrap:wrap;gap:14px;
}
.rel-pill{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 20px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--surface);
  color:var(--ink);
  font-size:15px;font-weight:500;
  transition:all .18s ease-out;
}
.rel-pill i{color:var(--brand-600);font-size:14px;}
.rel-pill:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-50);text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow-sm);}

/* CTA 条 */
.cta-band{
  background:var(--brand-900);
  color:#fff;
  border-radius:var(--radius-hero);
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:26px;line-height:1.35;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.78);margin:0;font-size:15px;max-width:620px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;
  cursor:pointer;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-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:#A94F2D;color:#fff;transform:translateY(-1px);text-decoration:none;}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 0 0 1px rgba(0,0,0,.16);}
.btn-ghost{background:#fff;color:var(--brand-900);border-color:#fff;}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-900);border-color:var(--brand-50);text-decoration:none;}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-outline:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);text-decoration:none;}

/* ============ 页脚 ============ */
footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.72);
  margin-top:auto;
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;}
.footer-brand .brand-name{color:#fff;font-size:24px;font-weight:700;}
.footer-brand .brand-text{display:flex;flex-direction:column;line-height:1.15;}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{color:rgba(255,255,255,.72);font-size:14px;line-height:1.7;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72);}

/* ============ 响应式 ============ */
@media (min-width:1280px){
  :root{--sidebar:248px;}
}
@media (max-width:1279px){
  .split{gap:36px;}
}
@media (max-width:1023px){
  .side{display:none;}
  .topbar{display:flex;}
  .main{margin-left:0;}
  .page-hero{padding:44px 0 40px;}
  .page-hero h1{font-size:32px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.rev .split-media{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .page-hero{padding:34px 0 32px;}
  .page-hero h1{font-size:28px;line-height:1.3;}
  .hero-lead{font-size:15px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:22px;margin-bottom:10px;}
  .split-body h3{font-size:18px;}
  .card-grid{grid-template-columns:1fr;gap:18px;}
  .card{padding:18px;}
  .cta-band{padding:28px 20px;border-radius:16px;}
  .cta-band h2{font-size:21px;}
  .btn{width:100%;}
  .cta-band .btn{width:100%;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .faq-body{padding:14px 18px 18px;}
  .rel-pill{width:100%;justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-about{max-width:none;}
  table{min-width:560px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category4 */
:root{
  --brand:#0E4B45;
  --brand-900:#07332F;
  --brand-600:#1C6B61;
  --brand-50:#E8F1EE;
  --accent:#C2603A;
  --gold:#D8A13C;
  --bg:#F6F3ED;
  --surface:#FFFFFF;
  --surface-2:#EFEAE1;
  --ink:#1F2B29;
  --ink-2:#55645F;
  --line:#E3DCD0;
  --success:#2E7D5B;
  --warn:#C98A1C;
  --error:#B4432F;
  --info:#2F6E8F;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-hero:20px;
  --shadow-sm:0 1px 2px rgba(31,43,41,.06),0 1px 3px rgba(31,43,41,.04);
  --shadow-md:0 6px 20px rgba(7,51,47,.08);
  --sidebar-w:248px;
}
*,*::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:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
body.lock{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{
  color:var(--brand-600);
  text-decoration:underline;
  text-decoration-color:transparent;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
  transition:color .18s ease-out,text-decoration-color .18s ease-out,background .18s ease-out,border-color .18s ease-out;
}
a:visited{color:var(--brand-600)}
a:hover{color:var(--accent);text-decoration-color:currentColor;text-decoration-thickness:2px}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
h1{font-size:40px;line-height:1.25}
h2{font-size:28px;line-height:1.35}
h3{font-size:20px;font-weight:600;line-height:1.5}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;
  top:0;bottom:0;left:0;
  width:var(--sidebar-w);
  background:var(--brand-900);
  color:#fff;
  display:flex;
  flex-direction:column;
  gap:20px;
  padding:24px 18px 22px;
  overflow-y:auto;
  z-index:60;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.brand:hover{text-decoration:none;color:#fff}
.brand-mark{
  width:32px;height:32px;flex:0 0 auto;
  border:1.5px solid var(--gold);
  border-radius:9px;
  display:grid;place-items:center;
  font-size:12px;font-weight:700;letter-spacing:.02em;color:#fff;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:24px;font-weight:700;color:#fff;letter-spacing:.01em}
.brand-sub{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.72);margin-top:3px}
.side-group{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.side-label{
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(255,255,255,.5);
  padding:0 12px 8px;
}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:46px;padding:0 12px;
  border-radius:10px;
  color:rgba(255,255,255,.78);
  font-size:15px;text-decoration:none;
  transition:background .15s ease-out,color .15s ease-out;
}
.side-link i{width:18px;text-align:center;font-size:15px;color:rgba(255,255,255,.58)}
.side-link:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none}
.side-link:hover i{color:rgba(255,255,255,.85)}
.side-link.active{background:rgba(255,255,255,.08);color:#fff;font-weight:600}
.side-link.active i{color:#fff}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;
  width:3px;border-radius:2px;background:var(--accent);
}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.side-foot .btn-side{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:46px;border-radius:var(--r-btn);
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  text-decoration:none;border:1px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.side-foot .btn-side:hover{background:#fff;color:var(--brand-900);text-decoration:none;transform:translateY(-1px)}
.side-note{font-size:12px;line-height:1.7;color:rgba(255,255,255,.5)}
.side-note a{color:rgba(255,255,255,.62)}
.side-note a:hover{color:#fff}

/* ============ 移动端顶栏 ============ */
.topbar{display:none}
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,51,47,.5);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
  z-index:55;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ============ 内容外壳 ============ */
.shell{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1 1 auto}

/* ============ 页头 ============ */
.page-head{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:40px 0 52px;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-2);
  padding-bottom:20px;margin-bottom:28px;
  border-bottom:1px solid var(--line);
}
.breadcrumb a{color:var(--ink-2);text-decoration:none}
.breadcrumb a:hover{color:var(--brand-600);text-decoration:none}
.breadcrumb .sep{color:#BFB7A8}
.breadcrumb .current{color:var(--ink-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.head-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--brand-600);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--accent)}
.page-head h1{margin-bottom:16px}
.lead{font-size:17px;color:var(--ink-2);line-height:1.9;max-width:560px}
.head-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;padding:4px 12px;font-size:13px;
  background:var(--brand-50);color:var(--brand-600);
}
.tag-gold{background:transparent;border:1px solid var(--gold);color:#9A6E1F}
.head-figure{
  border-radius:var(--r-hero);
  overflow:hidden;
  box-shadow:var(--shadow-md);
  background:var(--surface-2);
  aspect-ratio:16/10;
  position:relative;
}
.head-figure img{width:100%;height:100%;object-fit:cover}
.head-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,51,47,.10),rgba(7,51,47,.22));
}

/* ============ 锚点目录 ============ */
.anchor-bar{
  position:sticky;top:0;z-index:40;
  background:rgba(246,243,237,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;align-items:center;gap:10px;min-height:58px;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-title{font-size:13px;letter-spacing:.1em;color:var(--ink-2);flex:0 0 auto;padding-right:8px}
.anchor-chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);
  color:var(--ink);font-size:14px;text-decoration:none;
}
.anchor-chip:hover{border-color:var(--brand-600);color:var(--brand-600);text-decoration:none}

/* ============ 板块 ============ */
.section{padding:80px 0}
.section--alt{background:var(--surface-2)}
.section--white{background:var(--surface)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--ink-2);font-size:16px}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ============ FAQ ============ */
.faq{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:background .18s ease-out,color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--brand-50);color:var(--brand-600)}
.faq-icon{color:var(--brand-600);font-size:14px;flex:0 0 auto;transition:transform .18s ease-out}
.faq-item[open] .faq-icon{transform:rotate(180deg)}
.faq-a{padding:0 24px 22px;color:var(--ink-2);font-size:15px;line-height:1.85}
.faq-a p{margin-bottom:.7em}

/* ============ 时间线 ============ */
.timeline{list-style:none;padding:0;margin:0;max-width:900px}
.tl-item{position:relative;padding:0 0 26px 30px}
.tl-item::before{content:"";position:absolute;left:5px;top:14px;bottom:-2px;width:1px;background:#D7CFC1}
.tl-item:last-child{padding-bottom:0}
.tl-item:last-child::before{display:none}
.tl-item::after{
  content:"";position:absolute;left:0;top:9px;
  width:11px;height:11px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 3px var(--surface-2);
}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 24px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.tl-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--brand-600)}
.tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:8px}
.tl-badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;padding:3px 12px;font-size:13px;
  background:var(--brand-50);color:var(--brand-600);font-weight:600;
}
.tl-type{font-size:13px;color:var(--ink-2)}
.tl-card h3{font-size:18px;margin-bottom:8px}
.tl-card p{color:var(--ink-2);font-size:15px;line-height:1.85}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  display:flex;flex-direction:column;gap:12px;
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--brand-600)}
.card:hover h3{color:var(--brand-600)}
.card-icon{
  width:40px;height:40px;border-radius:10px;
  background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-size:16px;
}
.card h3{transition:color .18s ease-out}
.card p{color:var(--ink-2);font-size:15px;line-height:1.85;margin:0}
.card-figure{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;background:var(--surface-2)}
.card-figure img{width:100%;height:100%;object-fit:cover}
.link-more{
  margin-top:auto;font-size:15px;font-weight:600;color:var(--brand-600);
  text-decoration:none;display:inline-flex;align-items:center;gap:6px;
}
.link-more i{transition:transform .18s ease-out}
.link-more:hover{color:var(--accent);text-decoration:none}
.link-more:hover i{transform:translateX(3px)}

/* ============ 提示条 ============ */
.notice-box{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--gold);
  border-radius:var(--r-card);
  padding:20px 24px;
  box-shadow:var(--shadow-sm);
}
.notice-box i{color:var(--gold);font-size:18px;margin-top:4px}
.notice-box p{color:var(--ink-2);font-size:15px;line-height:1.85;margin:0}

/* ============ 胶囊互链 ============ */
.pill-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line);border-radius:999px;
  padding:10px 18px;background:var(--surface);color:var(--ink);
  font-size:15px;text-decoration:none;
  transition:all .18s ease-out;
}
.pill:hover{border-color:var(--brand-600);color:var(--brand-600);text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow-sm)}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-900);
  color:#fff;
  padding:64px 0;
}
.cta-grid{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;max-width:560px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 按钮 ============ */
.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:600;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:visited{color:#fff}
.btn-primary:hover{background:#A44E2C;color:#fff;transform:translateY(-1px);text-decoration:none}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 1px 2px rgba(0,0,0,.2)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:visited{color:var(--ink)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);text-decoration:none}
.btn-light{background:#fff;color:var(--brand-900)}
.btn-light:visited{color:var(--brand-900)}
.btn-light:hover{background:var(--brand-50);color:var(--brand-900);text-decoration:none;transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:visited{color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ============ 页脚 ============ */
footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 26px}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{border-color:var(--gold)}
.footer-brand .brand-name{font-size:22px;font-weight:700;color:#fff}
.footer-brand .brand-sub{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.66)}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);margin:0;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;line-height:1.7}
.footer-col a{color:rgba(255,255,255,.72);text-decoration:none}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-thickness:1px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.75)}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:232px}
  .head-grid{gap:36px}
}
@media (max-width:1023px){
  .sidebar{
    width:280px;
    transform:translateX(-100%);
    transition:transform .22s ease-out;
    box-shadow:var(--shadow-md);
  }
  .sidebar.open{transform:translateX(0)}
  .shell{margin-left:0}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    height:60px;padding:0 16px;
    background:var(--brand-900);
    position:sticky;top:0;z-index:50;
  }
  .topbar .brand{gap:9px}
  .topbar .brand-mark{width:28px;height:28px;font-size:11px;border-radius:8px}
  .topbar .brand-name{font-size:18px}
  .topbar .brand-sub{font-size:10px;letter-spacing:.1em}
  .hamburger{
    width:44px;height:44px;border-radius:10px;
    background:rgba(255,255,255,.08);color:#fff;border:0;
    display:grid;place-items:center;font-size:17px;cursor:pointer;
  }
  .hamburger:hover{background:rgba(255,255,255,.16)}
  .anchor-bar{top:60px}
  .head-grid{grid-template-columns:1fr;gap:28px}
  .head-figure{order:-1}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  h1,.page-head h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .container{padding:0 18px}
  .page-head{padding:28px 0 36px}
  .section{padding:48px 0}
  .card-grid{grid-template-columns:1fr}
  .faq-item summary{padding:18px 18px;font-size:16px}
  .faq-a{padding:0 18px 18px}
  .card{padding:18px}
  .tl-card{padding:18px}
  .cta-band{padding:48px 0}
  .cta-grid{flex-direction:column;align-items:flex-start;gap:24px}
  .btn{width:100%}
  .cta-actions,.head-meta{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-about{max-width:none}
  .lead{font-size:16px}
  .section-head--row{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .head-figure{border-radius:14px}
  .breadcrumb{font-size:12px}
  .anchor-title{display:none}
  .pill{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}