/* roulang page: index */
:root{
  --brand:#2F5D57;
  --brand-deep:#24463F;
  --accent:#C4623C;
  --accent-deep:#A94F2E;
  --ink:#12161A;
  --bg:#F6F4F0;
  --bg-soft:#EDEAE4;
  --card:#FFFFFF;
  --line:rgba(18,22,26,.08);
  --muted:rgba(18,22,26,.62);
  --muted-2:rgba(18,22,26,.45);
  --ok:#3F7A55;
  --warn:#B4553A;
  --radius:8px;
  --radius-sm:6px;
  --shadow:0 1px 2px rgba(18,22,26,.06);
  --shadow-hover:0 10px 30px rgba(18,22,26,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:clamp(30px,4.1vw,50px)}
h2{font-size:clamp(25px,2.6vw,35px)}
h3{font-size:clamp(18px,1.5vw,22px)}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
a{color:var(--brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--brand-deep)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:1px;border-radius:4px}
::selection{background:rgba(47,93,87,.18)}

/* ---------- layout ---------- */
.shell-wrap{max-width:1160px;margin:0 auto;padding:0 48px;width:100%}
.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.section{padding:88px 0}
.section-lg{padding:120px 0}
.section-sm{padding:64px 0}
.section-soft{background:var(--bg-soft)}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);font-weight:600;margin-bottom:14px
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.section-head p.lead{color:var(--muted);max-width:620px;margin:14px 0 0;font-size:16px}
.lead{color:var(--muted)}

/* ---------- sidebar ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:28px 18px 24px;z-index:1040;overflow-y:auto
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 10px 26px;color:var(--ink)}
.brand:hover{color:var(--brand)}
.brand-mark{width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;border-radius:9px;background:var(--brand)}
.brand-mark svg{width:20px;height:20px;display:block}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.side-label{font-size:12px;letter-spacing:.12em;color:var(--muted-2);padding:0 12px 10px;font-weight:600}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--radius);font-size:15px;
  color:rgba(18,22,26,.72);transition:background .24s var(--ease),color .24s var(--ease)
}
.side-link i{width:18px;text-align:center;font-size:14px;color:var(--muted-2);transition:color .24s var(--ease)}
.side-link span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-link:hover{background:var(--bg-soft);color:var(--ink)}
.side-link:hover i{color:var(--brand)}
.side-link.active{background:rgba(47,93,87,.09);color:var(--brand);font-weight:600}
.side-link.active i{color:var(--brand)}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;background:var(--brand)
}
.side-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line)}
.side-foot .btn{width:100%;justify-content:center}
.side-meta{font-size:13px;line-height:1.6;color:var(--muted-2);margin:14px 2px 0}

/* ---------- mobile topbar ---------- */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:1050;
  background:rgba(255,255,255,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;padding:0 16px
}
.mobile-topbar .brand{padding:0;gap:8px}
.mobile-topbar .brand-mark{width:30px;height:30px;flex:0 0 30px}
.mobile-topbar .brand-text{font-size:16px}
.burger{
  width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line);
  border-radius:var(--radius-sm);background:#fff;color:var(--ink)
}
.offcanvas.sidebar-drawer{width:280px;background:var(--card);border-right:1px solid var(--line)}
.sidebar-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 18px}
.sidebar-drawer .offcanvas-body{padding:18px}
.sidebar-drawer .side-link{font-size:15.5px;padding:12px 12px}
.sidebar-drawer .side-link span{display:inline}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;border-radius:var(--radius-sm);
  padding:.72rem 1.4rem;font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;transition:all .24s var(--ease);cursor:pointer
}
.btn-brand{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-brand:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-ink{border-color:rgba(18,22,26,.35);color:var(--ink);background:transparent}
.btn-ink:hover{background:var(--ink);border-color:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost{border-color:rgba(18,22,26,.18);color:var(--ink);background:#fff;box-shadow:var(--shadow)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-on-dark{border-color:rgba(255,255,255,.38);color:#fff;background:transparent}
.btn-on-dark:hover{background:#fff;color:var(--ink);border-color:#fff;transform:translateY(-1px)}
.btn-block{width:100%;justify-content:center}
.link-more{font-size:14.5px;font-weight:600;border-bottom:1px solid rgba(47,93,87,.4);padding-bottom:2px}
.link-more:hover{border-bottom-width:2px;color:var(--brand-deep)}

/* ---------- hero ---------- */
.hero{
  position:relative;isolation:isolate;display:flex;align-items:center;
  min-height:min(88vh,760px);color:#fff;padding:96px 0 72px;overflow:hidden
}
.hero-media{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center}
.hero-veil{position:absolute;inset:0;z-index:-1;
  background:linear-gradient(115deg,rgba(18,22,26,.88) 0%,rgba(18,22,26,.62) 52%,rgba(18,22,26,.20) 100%)}
.hero h1{color:#fff;max-width:16em}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.04em;
  border:1px solid rgba(255,255,255,.32);border-radius:999px;padding:6px 14px;margin-bottom:22px;color:rgba(255,255,255,.92)
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero-sub{font-size:clamp(16px,1.5vw,19px);line-height:1.8;color:rgba(255,255,255,.86);max-width:38em;margin:22px 0 0}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:56px;margin-top:56px;padding-top:28px;border-top:1px solid rgba(255,255,255,.18)}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.hero-stats strong{font-size:30px;font-weight:700;color:#fff;letter-spacing:-.02em}
.hero-stats span{font-size:13.5px;color:rgba(255,255,255,.66)}

/* ---------- pain ---------- */
.pain-list{border-top:1px solid var(--line)}
.pain-item{display:grid;grid-template-columns:76px minmax(0,1fr);gap:24px;padding:30px 0;border-bottom:1px solid var(--line)}
.pain-num{font-size:30px;font-weight:700;color:var(--brand);line-height:1.1;letter-spacing:-.03em}
.pain-item h3{margin-bottom:8px}
.pain-item p{color:var(--muted);margin:0;font-size:15.5px}
.pain-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:64px}

/* ---------- solution ---------- */
.solution-grid{display:grid;grid-template-columns:5fr 7fr;gap:72px;align-items:start}
.solution-aside{position:sticky;top:48px}
.solution-aside h2{margin-bottom:18px}
.solution-aside p{color:var(--muted);font-size:15.5px;margin-bottom:26px}
.solution-item{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:32px;padding-bottom:44px;margin-bottom:44px;border-bottom:1px solid var(--line)}
.solution-item:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0}
.solution-item h3{margin-bottom:12px}
.solution-item h3 .idx{color:var(--brand);font-size:14px;font-weight:700;margin-right:10px;letter-spacing:.06em}
.solution-item p{color:var(--muted);font-size:15.5px;margin-bottom:12px}
.solution-item ul.feat{display:flex;flex-direction:column;gap:8px;margin-top:14px}
.solution-item ul.feat li{position:relative;padding-left:20px;font-size:15px;color:rgba(18,22,26,.78)}
.solution-item ul.feat li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:1px;background:var(--accent)}
.solution-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--bg-soft)}
.solution-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .42s var(--ease)}
.solution-media:hover img{transform:scale(1.03)}

/* ---------- stats band ---------- */
.band-dark{background:var(--ink);color:#fff;padding:96px 0}
.band-dark h2{color:#fff}
.band-dark .lead{color:rgba(255,255,255,.6)}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:56px}
.stat-cell{padding:0 32px;border-left:1px solid rgba(255,255,255,.12)}
.stat-cell:first-child{border-left:0;padding-left:0}
.stat-cell strong{display:block;font-size:clamp(34px,3.6vw,52px);font-weight:700;letter-spacing:-.03em;color:var(--accent)}
.stat-cell span{display:block;margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.66);line-height:1.7}

/* ---------- testimonials ---------- */
.quote{
  position:relative;max-width:820px;padding:8px 0 8px 34px;border-left:3px solid var(--brand)
}
.quote p{font-size:clamp(19px,1.9vw,25px);line-height:1.72;color:var(--ink);font-weight:500;letter-spacing:-.01em}
.quote-2{margin-left:auto;max-width:720px;border-left-color:var(--accent)}
.quote-foot{display:flex;align-items:center;gap:16px;margin-top:24px}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--bg-soft);border:1px solid var(--line);display:grid;place-items:center;color:var(--brand);font-weight:700;font-size:16px}
.quote-foot b{display:block;font-size:15px;font-weight:600}
.quote-foot em{font-style:normal;font-size:13.5px;color:var(--muted-2)}
.quote-block + .quote-block{margin-top:72px}

/* ---------- news / cms ---------- */
.news-list{display:flex;flex-direction:column;gap:18px}
.news-item{
  display:grid;grid-template-columns:220px minmax(0,1fr) 168px;gap:28px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow);color:var(--ink);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)
}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(47,93,87,.28);color:var(--ink)}
.news-thumb{aspect-ratio:16/10;border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.news-item:hover .news-thumb img{transform:scale(1.03)}
.news-thumb.is-empty{
  display:grid;place-items:center;background:#FBF9F6;border:1px solid rgba(47,93,87,.22)
}
.news-thumb.is-empty::after{content:"kaiyun网页版";font-size:12.5px;color:rgba(47,93,87,.55);letter-spacing:.08em}
.news-title{
  font-size:19px;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.news-sum{
  color:var(--muted);font-size:14.8px;line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.news-meta{display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.pill{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(47,93,87,.3);color:var(--brand);border-radius:999px;padding:3px 12px;white-space:nowrap
}
.news-meta time{font-size:13.5px;color:var(--muted-2)}
.news-empty{
  text-align:center;padding:64px 24px;background:var(--card);border:1px dashed rgba(47,93,87,.3);border-radius:var(--radius)
}
.news-empty p{color:var(--muted);margin-bottom:20px}

/* ---------- faq ---------- */
.faq-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-accordion .accordion-button{
  background:transparent;box-shadow:none;color:var(--ink);font-size:17.5px;font-weight:600;
  padding:24px 44px 24px 0;line-height:1.6
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand)}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:1px}
.faq-accordion .accordion-button::after{
  background-image:none;content:"";width:12px;height:12px;border-right:1.5px solid var(--brand);border-bottom:1.5px solid var(--brand);
  transform:rotate(45deg);transform-origin:center;transition:transform .24s var(--ease);position:absolute;right:12px;top:50%;margin-top:-8px
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:-2px}
.faq-accordion .accordion-body{padding:0 60px 26px 0;color:var(--muted);font-size:15.5px;line-height:1.8}
.faq-layout{display:grid;grid-template-columns:5fr 7fr;gap:72px;align-items:start}

/* ---------- cta ---------- */
.cta-wrap{display:grid;grid-template-columns:6fr 6fr;gap:64px;align-items:center}
.cta-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:38px;box-shadow:var(--shadow)}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;font-weight:600;color:rgba(18,22,26,.7);margin-bottom:8px;letter-spacing:.02em}
.field input,.field textarea{
  width:100%;background:#FBF9F6;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:12px 14px;font-size:15px;transition:border-color .24s var(--ease),box-shadow .24s var(--ease)
}
.field input::placeholder,.field textarea::placeholder{color:rgba(18,22,26,.34)}
.field input:focus,.field textarea:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(47,93,87,.12);outline:none}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-note{font-size:13px;color:var(--muted-2);margin:0}
.form-err{font-size:13px;color:var(--warn);margin:8px 0 0;display:none}
.cta-list li{position:relative;padding-left:26px;margin-bottom:12px;color:rgba(18,22,26,.78);font-size:15.5px}
.cta-list li::before{
  content:"";position:absolute;left:0;top:11px;width:14px;height:1px;background:var(--brand)
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1.3fr;gap:48px}
.site-footer .brand-text{color:#fff;font-size:17px}
.site-footer .brand{padding:0 0 18px}
.site-footer .brand-mark{background:rgba(255,255,255,.1)}
.site-footer h4{color:#fff;font-size:14px;letter-spacing:.08em;margin-bottom:18px;font-weight:600}
.footer-desc{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.6);max-width:34em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14.5px}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.5)
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  :root{--sidebar-w:88px}
  .app-sidebar{padding:24px 12px}
  .brand{justify-content:center;padding:6px 0 22px}
  .brand-text{display:none}
  .side-label{display:none}
  .side-link{justify-content:center;padding:13px 0}
  .side-link span{display:none}
  .side-link.active::before{top:10px;bottom:10px}
  .side-foot .btn span{display:none}
  .side-foot .btn{padding:.7rem 0}
  .side-meta{display:none}
  .shell-wrap{padding:0 32px}
  .solution-grid,.faq-layout{gap:48px}
  .cta-wrap{gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:991.98px){
  .app-sidebar{display:none}
  .mobile-topbar{display:flex}
  .app-main{margin-left:0;padding-top:56px}
  .shell-wrap{padding:0 24px}
  .hero{padding:80px 0 64px;min-height:auto}
  .section{padding:64px 0}
  .section-lg{padding:80px 0}
  .section-sm{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:36px}
  .pain-grid{grid-template-columns:1fr}
  .solution-grid,.faq-layout,.cta-wrap{grid-template-columns:1fr}
  .solution-aside{position:static}
  .solution-item{grid-template-columns:1fr;gap:20px}
  .solution-media{order:-1}
  .stat-grid{grid-template-columns:1fr 1fr;gap:36px 0}
  .stat-cell{padding:0 24px}
  .stat-cell:nth-child(3){border-left:0;padding-left:0}
  .news-item{grid-template-columns:140px minmax(0,1fr);gap:18px;align-items:flex-start}
  .news-meta{grid-column:1 / -1;flex-direction:row;align-items:center;justify-content:space-between}
  .quote-2{margin-left:0}
  .hero-stats{gap:36px}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .shell-wrap{padding:0 20px}
  .hero-actions .btn{width:100%;justify-content:center}
  .hero-stats{gap:24px 32px;margin-top:40px}
  .hero-stats strong{font-size:24px}
  .pain-item{grid-template-columns:52px minmax(0,1fr);gap:16px;padding:24px 0}
  .pain-num{font-size:24px}
  .stat-grid{grid-template-columns:1fr}
  .stat-cell{padding:0 0 24px;border-left:0;border-bottom:1px solid rgba(255,255,255,.12)}
  .stat-cell:last-child{border-bottom:0;padding-bottom:0}
  .news-item{display:flex;flex-direction:column;gap:14px}
  .news-thumb{width:100%}
  .news-meta{width:100%}
  .cta-panel{padding:24px}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-accordion .accordion-body{padding-right:24px}
}

/* roulang page: category1 */
:root{
  --brand:#2F5D57;
  --brand-deep:#24463F;
  --accent:#C4623C;
  --accent-deep:#A94F2E;
  --ink:#12161A;
  --bg:#F6F4F0;
  --card:#FFFFFF;
  --soft:#EDEAE4;
  --line:rgba(18,22,26,.08);
  --muted:rgba(18,22,26,.6);
  --ok:#3F7A55;
  --warn:#B4553A;
  --r-card:8px;
  --r-btn:6px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(18,22,26,.06);
  --shadow-2:0 10px 30px rgba(18,22,26,.10);
  --sp-120:120px;
  --sp-88:88px;
  --sp-64:64px;
  --sp-48:48px;
  --sp-32:32px;
  --sp-24:24px;
  --sp-16:16px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--brand-deep)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.02em;line-height:1.25;font-weight:700}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:1px;border-radius:4px}

/* ---------- 布局骨架 ---------- */
.app-shell{display:flex;min-height:100vh}
.side-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:var(--sp-24) var(--sp-16) var(--sp-24);
  z-index:1030;overflow-y:auto;
}
.main-area{margin-left:var(--side-w);flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.container-xl{width:100%;max-width:1160px;margin:0 auto;padding:0 48px}

/* ---------- 品牌 ---------- */
.brand{display:flex;align-items:center;gap:10px;padding:6px 10px 18px;border-bottom:1px solid var(--line);margin-bottom:18px}
.brand-mark{width:32px;height:32px;color:var(--brand);flex:0 0 32px}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:-.01em}
.brand-name:hover{color:var(--brand)}

/* ---------- 侧栏导航 ---------- */
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--r-card);
  color:rgba(18,22,26,.7);font-size:14px;line-height:1.5;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:15px;color:var(--brand);flex:0 0 18px}
.side-link:hover{background:var(--soft);color:var(--ink)}
.side-link.active{background:var(--soft);color:var(--brand-deep);font-weight:600}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.side-foot{margin-top:auto;padding-top:var(--sp-24);border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.side-meta{font-size:13px;color:var(--muted);line-height:1.6;margin:0}

/* ---------- 按钮 ---------- */
.btn-accent,.btn-outline,.btn-ghost-light,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .12s var(--ease),background .12s var(--ease),color .12s var(--ease),border-color .12s var(--ease),box-shadow .24s var(--ease);
}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline{background:transparent;color:var(--ink);border-color:rgba(18,22,26,.35)}
.btn-outline:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-soft{background:var(--soft);color:var(--brand-deep)}
.btn-soft:hover{background:#E3DFD7;color:var(--brand-deep)}
.btn-ghost-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost-light:hover{background:#fff;color:var(--brand-deep);border-color:#fff}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}

.link-underline{
  color:var(--brand);border-bottom:1px solid var(--brand);
  padding-bottom:2px;text-decoration:none;
  transition:border-width .12s var(--ease),color .24s var(--ease);
}
.link-underline:hover{border-bottom-width:2px;color:var(--brand-deep)}

/* ---------- 标签 / 徽章 ---------- */
.tagline{
  display:inline-block;padding:5px 14px;border-radius:var(--r-pill);
  background:var(--soft);color:var(--brand-deep);
  font-size:13px;font-weight:600;letter-spacing:.02em;line-height:1.5;
}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  font-size:12.5px;color:var(--muted);line-height:1.6;
}
.pill--brand{border-color:rgba(47,93,87,.35);color:var(--brand-deep)}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:1040;
  height:56px;align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);backdrop-filter:saturate(1.4) blur(6px);
}
.topbar-btn{background:none;border:0;font-size:19px;color:var(--ink);padding:6px 8px;cursor:pointer}
.topbar-brand{font-weight:700;font-size:15.5px;color:var(--ink)}
.topbar-cta{font-size:13.5px;font-weight:600;color:var(--accent)}
.offcanvas{width:280px;max-width:86vw;background:var(--card)}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.offcanvas-body{padding:18px 16px;display:flex;flex-direction:column;gap:18px}
.offcanvas .side-nav{gap:4px}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:26px 0 0;font-size:13px;color:var(--muted);
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb span[aria-current]{color:var(--ink);font-weight:600}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  margin-top:var(--sp-24);
  border-radius:12px;
  background-image:linear-gradient(90deg,rgba(18,22,26,.78) 0%,rgba(18,22,26,.52) 52%,rgba(18,22,26,.24) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:#fff;
}
.cat-hero-inner{padding:72px 64px;max-width:790px}
.cat-hero h1{
  color:#fff;font-size:clamp(30px,4vw,46px);line-height:1.2;letter-spacing:-.02em;margin:18px 0 16px;
}
.cat-hero .hero-sub{color:rgba(255,255,255,.88);font-size:17.5px;line-height:1.8;max-width:600px}
.cat-hero .tagline{background:rgba(255,255,255,.16);color:#fff}
.hero-metrics{display:flex;flex-wrap:wrap;gap:36px;margin:32px 0 30px}
.hero-metrics .mi{min-width:96px}
.hero-metrics .mi b{display:block;font-size:28px;line-height:1.2;color:#fff;font-weight:700}
.hero-metrics .mi span{font-size:13px;color:rgba(255,255,255,.72)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sp-88) 0}
.section--tight{padding:var(--sp-64) 0}
.section--soft{background:var(--soft)}
.section--ink{background:var(--ink);color:rgba(255,255,255,.82)}
.section--ink h2,.section--ink h3{color:#fff}
.section--ink .eyebrow{color:rgba(255,255,255,.6)}
.sec-head{max-width:760px}
.sec-head h2{font-size:clamp(26px,3vw,34px);margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:16.5px}
.section--ink .sec-head p{color:rgba(255,255,255,.7)}
.eyebrow{
  display:block;font-size:13px;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;color:var(--brand);margin-bottom:14px;
}

/* ---------- 三组图文（占位 4/8） ---------- */
.split{display:flex;gap:56px;align-items:flex-start}
.split-aside{flex:0 0 33.3333%;max-width:340px}
.split-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:48px}
.sticky-block{position:sticky;top:32px}
.figrow{
  display:grid;grid-template-columns:44% 1fr;gap:28px;align-items:center;
  padding-bottom:44px;border-bottom:1px solid var(--line);
}
.figrow:last-child{border-bottom:0;padding-bottom:0}
.figrow figure{margin:0;border-radius:var(--r-card);overflow:hidden;background:var(--soft);box-shadow:var(--shadow-1)}
.figrow figure img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .42s var(--ease)}
.figrow:hover figure img{transform:scale(1.03)}
.figrow h3{font-size:21px;margin-bottom:10px}
.figrow p{color:var(--muted);font-size:16px;margin-bottom:.9em}
.figrow .pill{margin-top:4px}

/* ---------- 角色卡 2×2 ---------- */
.role-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:44px}
.role-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.role-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.role-card h3{font-size:19px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.role-card h3 i{color:var(--accent);font-size:16px}
.role-card p{color:var(--muted);font-size:15.5px;margin:0}

/* ---------- 流程编号 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:52px;border-top:1px solid rgba(255,255,255,.16)}
.flow-item{padding:32px 26px 8px;border-right:1px solid rgba(255,255,255,.16)}
.flow-item:last-child{border-right:0}
.flow-item b{display:block;font-size:30px;font-weight:700;color:var(--accent);line-height:1.1;letter-spacing:-.02em}
.flow-item h3{margin:14px 0 8px;font-size:18px}
.flow-item p{color:rgba(255,255,255,.68);font-size:15px;margin:0}

/* ---------- 成果条 ---------- */
.stat-band{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:44px}
.stat-item{padding:0 26px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-item b{display:block;font-size:clamp(32px,3.4vw,46px);line-height:1.1;color:var(--brand);letter-spacing:-.03em;font-weight:700}
.stat-item span{display:block;margin-top:10px;font-size:14px;color:var(--muted);line-height:1.6}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:40px;max-width:860px}
.faq-wrap .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq-wrap .accordion-button{
  background:transparent;box-shadow:none;border:0;
  padding:22px 44px 22px 0;font-size:17.5px;font-weight:600;color:var(--ink);
  line-height:1.6;
}
.faq-wrap .accordion-button:not(.collapsed){color:var(--brand-deep)}
.faq-wrap .accordion-button::after{
  background-image:none;
  content:"";position:absolute;right:6px;top:50%;
  width:10px;height:10px;border-right:1.5px solid var(--brand);border-bottom:1.5px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);transition:transform .24s var(--ease);
}
.faq-wrap .accordion-button:not(.collapsed)::after{transform:translateY(-30%) rotate(-135deg)}
.faq-wrap .accordion-body{padding:0 44px 26px 0;font-size:15.5px;line-height:1.8;color:var(--muted)}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:40px}
.rel-card{
  display:flex;flex-direction:column;gap:10px;
  padding:24px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(47,93,87,.3)}
.rel-card i{font-size:18px;color:var(--brand)}
.rel-card b{font-size:16.5px;color:var(--ink);font-weight:700}
.rel-card span{font-size:14px;color:var(--muted);line-height:1.7}
.rel-card.is-current{border-color:var(--brand);background:var(--soft)}
.rel-card.is-current .rel-tag{
  font-size:12px;color:var(--brand-deep);font-weight:600;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:56px;display:grid;grid-template-columns:5fr 6fr;gap:56px;align-items:start;
  box-shadow:var(--shadow-1);
}
.cta-band h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:14px}
.cta-band p{color:var(--muted);font-size:16px}
.cta-points{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.cta-points li{display:flex;gap:10px;font-size:15px;color:var(--muted)}
.cta-points i{color:var(--ok);font-size:14px;margin-top:5px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--muted);font-weight:600}
.field input,.field textarea{
  width:100%;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:12px 14px;font-size:15px;color:var(--ink);
  transition:border-color .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.field input:hover,.field textarea:hover{border-color:rgba(18,22,26,.18)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(47,93,87,.12);
}
.field textarea{min-height:108px;resize:vertical;font-family:inherit;line-height:1.7}
.form-note{font-size:13px;color:var(--muted);grid-column:1 / -1}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink);color:rgba(255,255,255,.7);margin-top:var(--sp-88);padding:var(--sp-64) 0 0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-mark{color:#fff}
.foot-brand b{color:#fff;font-size:16.5px}
.site-foot p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62)}
.foot-col h3{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em;font-weight:600}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14.5px;color:rgba(255,255,255,.68)}
.foot-col a:hover{color:#fff}
.foot-bar{
  margin-top:var(--sp-48);border-top:1px solid rgba(255,255,255,.12);
  padding:24px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.foot-bar a{color:rgba(255,255,255,.55)}
.foot-bar a:hover{color:#fff}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 断点 ---------- */
@media (max-width:1199.98px){
  :root{--side-w:88px}
  .side-shell{padding:20px 8px;align-items:center}
  .brand{justify-content:center;padding:6px 0 16px;width:100%}
  .brand-name{display:none}
  .side-nav{width:100%}
  .side-link{justify-content:center;padding:12px 0}
  .side-link span{display:none}
  .side-foot{align-items:center;width:100%}
  .side-foot .btn-accent{padding:10px 8px;font-size:13px;width:100%}
  .side-meta{display:none}
  .split{gap:40px}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-item{border-bottom:1px solid rgba(255,255,255,.16)}
  .flow-item:nth-child(2n){border-right:0}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;gap:36px;padding:44px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:991.98px){
  body{font-size:16px}
  .side-shell{display:none}
  .main-area{margin-left:0}
  .topbar{display:flex}
  .container-xl{padding:0 32px}
  .cat-hero-inner{padding:52px 40px}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 0}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .section{padding:var(--sp-64) 0}
}
@media (max-width:767.98px){
  .container-xl{padding:0 20px}
  .crumb{padding-top:20px}
  .cat-hero{margin-top:16px;border-radius:10px}
  .cat-hero-inner{padding:40px 24px}
  .hero-metrics{gap:24px;margin:26px 0 26px}
  .hero-metrics .mi b{font-size:23px}
  .hero-actions .btn-accent,.hero-actions .btn-ghost-light{width:100%}
  .split{flex-direction:column;gap:32px}
  .split-aside{flex:1 1 auto;max-width:none;width:100%}
  .sticky-block{position:static}
  .figrow{grid-template-columns:1fr;gap:20px;padding-bottom:36px}
  .split-body{gap:36px}
  .role-grid{grid-template-columns:1fr;gap:16px}
  .flow{grid-template-columns:1fr;margin-top:36px}
  .flow-item{border-right:0 !important;padding:26px 0 24px}
  .stat-band{grid-template-columns:1fr;gap:0}
  .stat-item{border-left:0;padding:22px 0;border-top:1px solid var(--line)}
  .stat-item:first-child{border-top:0}
  .faq-wrap .accordion-button{font-size:16.5px;padding-right:36px}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 22px;gap:28px}
  .form-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .site-foot{margin-top:var(--sp-64)}
}
@media (max-width:520px){
  .cat-hero h1{font-size:27px}
  .hero-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
  .btn-accent,.btn-outline,.btn-ghost-light,.btn-soft{padding:11px 16px;font-size:14.5px}
  .role-card{padding:22px}
}

/* roulang page: article */
:root{
  --brand:#2F5D57;
  --brand-deep:#24463F;
  --brand-soft:#E7EFEC;
  --accent:#C4623C;
  --accent-deep:#A94F2E;
  --ink:#12161A;
  --bg:#F6F4F0;
  --card:#FFFFFF;
  --soft:#EDEAE4;
  --line:rgba(18,22,26,.08);
  --line-strong:rgba(18,22,26,.16);
  --muted:rgba(18,22,26,.6);
  --muted-2:rgba(18,22,26,.44);
  --ok:#3F7A55;
  --warn:#B4553A;
  --r-card:8px;
  --r-btn:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,22,26,.06);
  --sh-2:0 10px 30px rgba(18,22,26,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t1:240ms;
  --t2:420ms;
  --side:240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body,.tnum{font-variant-numeric:tabular-nums}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
p{margin:0}
a{color:var(--brand);text-decoration:none;transition:color var(--t1) var(--ease)}
a:hover{color:var(--brand-deep)}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:var(--card);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:26px 18px 22px;
  z-index:1035;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;padding:4px 6px 0}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:16.5px;letter-spacing:-.01em;color:var(--ink)}
.brand-text span{font-size:11.5px;color:var(--muted-2);letter-spacing:.06em}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:26px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--r-btn);
  color:var(--ink);font-size:15px;text-decoration:none;
  transition:background var(--t1) var(--ease),color var(--t1) var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:15px;color:var(--brand);opacity:.9}
.side-link:hover{background:var(--soft);color:var(--ink)}
.side-link.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--brand);
}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.side-note{margin:0;font-size:12.5px;line-height:1.6;color:var(--muted-2)}

/* ============ 按钮 ============ */
.btn-accent,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  border:1px solid transparent;
  transition:background var(--t1) var(--ease),color var(--t1) var(--ease),
             transform 120ms var(--ease),border-color var(--t1) var(--ease);
}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-block{width:100%}
.btn-lg{height:48px;padding:0 26px;font-size:15.5px}
.text-link{
  color:var(--brand);text-decoration:underline;text-underline-offset:4px;
  text-decoration-thickness:1px;font-size:15px;font-weight:500;
  transition:text-decoration-thickness var(--t1) var(--ease),color var(--t1) var(--ease);
}
.text-link:hover{text-decoration-thickness:2px;color:var(--brand-deep)}

/* ============ 页面容器 ============ */
.page{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column}
.main{flex:1 1 auto}
.wrap{max-width:1160px;margin:0 auto;padding:40px 48px 88px}

/* ============ 移动端顶栏 ============ */
.topbar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:1040;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(246,244,240,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar .menu-btn{
  width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);background:transparent;color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:16px;
  transition:background var(--t1) var(--ease);
}
.topbar .menu-btn:hover{background:var(--soft)}
.topbar .brand-mini{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);font-size:15.5px}
.topbar .brand-mini i{color:var(--brand)}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted-2);margin-bottom:22px;
}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:10px;opacity:.6;font-style:normal}
.crumb .crumb-now{color:var(--ink);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.post-head{border-bottom:1px solid var(--line);padding-bottom:30px;margin-bottom:40px}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.badge-outline{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border:1px solid var(--brand);border-radius:var(--r-pill);
  color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-soft{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--soft);
  color:var(--muted);font-size:12.5px;
}
.post-head h1{
  font-size:clamp(26px,3.2vw,38px);line-height:1.3;letter-spacing:-.02em;
  margin-bottom:18px;overflow-wrap:break-word;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted-2)}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:currentColor;display:inline-block}
.post-meta strong{color:var(--muted);font-weight:500}

/* ============ 文章布局 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 236px;gap:56px;align-items:start}
.article-main{min-width:0}

/* 正文排版 */
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:#1B2026;overflow-wrap:break-word}
.article-body p{margin:0 0 1.2em}
.article-body > p:first-child{font-size:17.5px;color:#22282E}
.article-body h2{
  font-size:clamp(22px,2.4vw,26px);line-height:1.4;letter-spacing:-.01em;
  margin:52px 0 16px;padding-top:4px;
}
.article-body h2::before{
  content:"";display:block;width:32px;height:3px;border-radius:2px;
  background:var(--brand);margin-bottom:14px;opacity:.9;
}
.article-body h3{font-size:20px;line-height:1.5;margin:36px 0 12px}
.article-body h4{font-size:17.5px;margin:28px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body li{margin:8px 0}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;border-left:3px solid var(--brand);
  background:#F1F0EC;border-radius:0 var(--r-card) var(--r-card) 0;
  color:#2B3237;font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-card);margin:28px 0;height:auto;background:var(--soft)}
.article-body figure{margin:28px 0}
.article-body figcaption{font-size:13px;color:var(--muted-2);text-align:center;margin-top:10px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-body a:hover{text-decoration-thickness:2px;color:var(--brand-deep)}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border-top:1px solid var(--line-strong);
}
.article-body th,.article-body td{
  border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top;
}
.article-body th{background:var(--soft);font-weight:600;white-space:nowrap}
.article-body code{
  background:var(--soft);padding:2px 6px;border-radius:4px;
  font-size:14.5px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:40px 0}
.table-scroll{overflow-x:auto}

/* 目录 */
.toc{position:sticky;top:32px;font-size:14px}
.toc-title{
  font-size:12.5px;letter-spacing:.1em;color:var(--muted-2);
  margin-bottom:12px;text-transform:uppercase;
}
.toc-list{display:flex;flex-direction:column;border-left:2px solid var(--line)}
.toc-list a{
  display:block;padding:6px 0 6px 12px;margin-left:-2px;
  border-left:2px solid transparent;color:var(--muted);
  font-size:14px;line-height:1.5;text-decoration:none;
  transition:color var(--t1) var(--ease),border-color var(--t1) var(--ease);
}
.toc-list a:hover{color:var(--brand);border-left-color:var(--brand)}
.toc-list a.is-h3{padding-left:24px;font-size:13px;color:var(--muted-2)}

/* ============ 空态 ============ */
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:64px 32px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state i{font-size:30px;color:var(--brand);opacity:.85;margin-bottom:16px;display:block}
.empty-state h2{font-size:24px;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:15.5px;max-width:34ch;margin:0 auto 24px}

/* ============ 文末标签与分享 ============ */
.post-foot{
  margin-top:56px;padding-top:28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;align-items:center;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.tag-row .label{font-size:13px;color:var(--muted-2);margin-right:2px}
.tag-pill{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border:1px solid var(--line-strong);border-radius:var(--r-pill);
  font-size:13px;color:var(--muted);
  transition:border-color var(--t1) var(--ease),color var(--t1) var(--ease),background var(--t1) var(--ease);
}
.tag-pill:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.share-row{display:flex;align-items:center;gap:10px}
.share-row .label{font-size:13px;color:var(--muted-2)}
.share-btn{
  width:36px;height:36px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);background:transparent;color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
  transition:background var(--t1) var(--ease),color var(--t1) var(--ease),border-color var(--t1) var(--ease);
}
.share-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.share-btn.done{background:var(--ok);border-color:var(--ok);color:#fff}

/* ============ 通用板块标题 ============ */
.sec{margin-top:64px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:24px}
.sec-head h2{font-size:24px;letter-spacing:-.01em}
.sec-head .sub{font-size:13.5px;color:var(--muted-2)}

/* ============ 相关推荐 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;color:inherit;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t1) var(--ease),transform var(--t1) var(--ease);
}
.rel-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);color:inherit}
.rel-thumb{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--soft)}
.rel-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
.rel-body h3{font-size:16.5px;line-height:1.55;font-weight:600}
.rel-body p{font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body .more{margin-top:auto;font-size:13px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* ============ 继续阅读 ============ */
.next-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.next-card{
  display:flex;align-items:center;gap:16px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;color:inherit;box-shadow:var(--sh-1);
  transition:box-shadow var(--t1) var(--ease),transform var(--t1) var(--ease),border-color var(--t1) var(--ease);
}
.next-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:var(--line-strong);color:inherit}
.next-card .dir{
  font-size:12px;color:var(--muted-2);letter-spacing:.08em;
  display:inline-flex;align-items:center;gap:6px;margin-bottom:6px;
}
.next-card h3{font-size:16.5px;line-height:1.55;font-weight:600}
.next-card .ico{
  flex:0 0 44px;width:44px;height:44px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.next-card .txt{min-width:0}

/* ============ 返回入口 ============ */
.back-row{margin-top:44px;display:flex;justify-content:center}

/* ============ CTA 区 ============ */
.cta-band{
  margin-top:72px;background:var(--ink);border-radius:14px;
  padding:52px 48px;color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-60px;width:300px;height:300px;
  border-radius:50%;background:rgba(47,93,87,.45);filter:blur(10px);
}
.cta-band .inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta-band h2{color:#fff;font-size:26px;line-height:1.4;margin-bottom:10px;max-width:22ch}
.cta-band p{color:rgba(255,255,255,.68);font-size:15px;max-width:44ch;line-height:1.8}
.cta-band .acts{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.34)}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ============ 页脚 ============ */
.site-foot{background:var(--ink);color:rgba(255,255,255,.7);margin-top:0}
.foot-inner{max-width:1160px;margin:0 auto;padding:64px 48px 28px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px}
.foot-brand{display:flex;flex-direction:column;gap:14px}
.foot-brand .fb-top{display:flex;align-items:center;gap:10px}
.foot-brand .fb-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;color:#fff;
}
.foot-brand .fb-mark svg{width:20px;height:20px}
.foot-brand b{color:#fff;font-size:16.5px;letter-spacing:-.01em}
.foot-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:34ch}
.foot-col h4{color:#fff;font-size:14px;letter-spacing:.06em;margin-bottom:16px;font-weight:600}
.foot-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.foot-col a,.foot-col span{color:rgba(255,255,255,.66);font-size:14px;text-decoration:none;line-height:1.6}
.foot-col a:hover{color:#fff}
.quote-foot{
  margin-top:44px;padding:22px 24px;border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);display:flex;align-items:center;gap:16px;
  background:rgba(255,255,255,.03);
}
.quote-foot .avatar{
  flex:0 0 48px;width:48px;height:48px;border-radius:50%;
  background:var(--brand);color:#fff;font-size:17px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.quote-foot span{display:flex;flex-direction:column;gap:3px}
.quote-foot b{color:#fff;font-size:14.5px;font-weight:600}
.quote-foot em{font-style:normal;font-size:13px;color:rgba(255,255,255,.5)}
.foot-bar{
  margin-top:32px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.44);
}

/* ============ 抽屉 ============ */
.drawer{
  --bs-offcanvas-width:280px;
  --bs-offcanvas-bg:var(--card);
  background:var(--card)!important;
  width:280px;
  border-right:1px solid var(--line);
}
.drawer .offcanvas-header{
  padding:18px 18px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer .offcanvas-body{padding:20px 18px;display:flex;flex-direction:column}
.drawer .side-nav{margin-top:0}

/* ============ 进场动效 ============ */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.in{opacity:1;transform:none;transition:opacity var(--t2) var(--ease),transform var(--t2) var(--ease)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .toc-col{display:none}
}
@media (max-width:991.98px){
  .sidebar{display:none}
  .page{margin-left:0;padding-top:56px}
  .wrap{padding:28px 32px 64px}
  .foot-inner{padding:52px 32px 24px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:40px 32px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .wrap{padding:22px 20px 56px}
  .rel-grid{grid-template-columns:1fr;gap:16px}
  .next-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-inner{padding:44px 20px 22px}
  .cta-band{padding:32px 22px;border-radius:12px}
  .cta-band .inner{flex-direction:column;align-items:flex-start;gap:22px}
  .cta-band .acts{width:100%}
  .cta-band .acts .btn-accent,.cta-band .acts .btn-ghost{flex:1 1 auto}
  .post-foot{flex-direction:column;align-items:flex-start}
  .article-body table{font-size:14px}
}
@media (max-width:519.98px){
  .post-head h1{font-size:24px}
  .sec-head{flex-direction:column;gap:6px}
  .empty-state{padding:44px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --brand:#2F5D57;
  --brand-deep:#24463F;
  --accent:#C4623C;
  --accent-deep:#A94F2E;
  --ink:#12161A;
  --bg:#F6F4F0;
  --card:#FFFFFF;
  --muted:#EDEAE4;
  --line:rgba(18,22,26,.08);
  --line-strong:rgba(18,22,26,.16);
  --text-2:rgba(18,22,26,.62);
  --text-3:rgba(18,22,26,.48);
  --ok:#3F7A55;
  --warn:#B4553A;
  --r-card:8px;
  --r-btn:6px;
  --sh-1:0 1px 2px rgba(18,22,26,.06);
  --sh-2:0 10px 30px rgba(18,22,26,.10);
  --s-120:120px;
  --s-88:88px;
  --s-64:64px;
  --s-48:48px;
  --s-32:32px;
  --s-24:24px;
  --s-16:16px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-deep);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.02em;line-height:1.25;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px;}
::selection{background:rgba(47,93,87,.16);}

/* ---------- 侧栏 App Shell ---------- */
.side-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:#FFFFFF;border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:28px 18px 20px;
  z-index:1050;
  overflow-y:auto;
}
.side-brand{display:flex;align-items:center;gap:10px;padding:6px 8px 22px;color:var(--ink);}
.side-brand:hover{color:var(--brand);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:9px;
  background:var(--brand);display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:20px;height:20px;display:block;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-0.01em;white-space:nowrap;}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px 11px 14px;border-radius:var(--r-card);
  color:rgba(18,22,26,.70);font-size:15px;line-height:1.4;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:15px;color:var(--brand);opacity:.75;transition:opacity .24s var(--ease);}
.side-link span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.side-link:hover{background:var(--muted);color:var(--ink);}
.side-link:hover i{opacity:1;}
.side-link.active{background:var(--muted);color:var(--brand);font-weight:600;}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:999px;background:var(--brand);
}
.side-link.active i{opacity:1;}
.side-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line);}
.side-cta{
  display:block;text-align:center;padding:11px 14px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);color:var(--ink);font-size:14px;font-weight:600;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.side-cta:hover{background:var(--brand);border-color:var(--brand);color:#fff;}
.side-meta{margin-top:16px;font-size:13px;line-height:1.7;color:var(--text-3);}
.side-meta b{display:block;color:var(--text-2);font-weight:600;font-size:13px;}

/* ---------- 移动顶栏 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:1040;
  background:rgba(246,244,240,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.mobile-brand{display:flex;align-items:center;gap:8px;color:var(--ink);font-weight:700;font-size:16px;}
.mobile-brand .brand-mark{width:28px;height:28px;flex:0 0 28px;border-radius:7px;}
.mobile-brand .brand-mark svg{width:16px;height:16px;}
.burger{
  width:40px;height:40px;border:1px solid var(--line-strong);background:#fff;border-radius:8px;
  display:flex;align-items:center;justify-content:center;color:var(--brand);cursor:pointer;
}
.drawer{background:var(--bg);width:280px;}
.drawer .side-nav{margin-top:8px;}
.drawer .side-link{padding:13px 14px;font-size:15.5px;}

/* ---------- 主内容 ---------- */
.main-shell{
  margin-left:var(--side-w);
  min-height:100vh;
  display:flex;flex-direction:column;
}
.wrap{
  width:100%;max-width:1160px;margin:0 auto;
  padding-left:48px;padding-right:48px;
}
.sec{padding:88px 0;}
.sec-tight{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:var(--s-48);}
.sec-head h2{font-size:34px;margin-bottom:16px;}
.sec-head p{color:var(--text-2);font-size:16.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand);
  background:rgba(47,93,87,.08);border-radius:999px;padding:5px 12px;
  margin-bottom:18px;font-weight:600;
}
.lead{color:var(--text-2);}

/* ---------- 面包屑 ---------- */
.crumb{padding:26px 0 0;font-size:13px;color:var(--text-3);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--line-strong);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb .now{color:var(--ink);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;margin-top:24px;border-radius:var(--r-card);overflow:hidden;
  background-image:linear-gradient(to right,rgba(18,22,26,.82),rgba(18,22,26,.42)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  color:#fff;padding:72px 56px 64px;
}
.page-hero h1{font-size:44px;color:#fff;max-width:760px;}
.page-hero .eyebrow{background:rgba(255,255,255,.14);color:#F1EDE7;}
.hero-sub{margin-top:20px;font-size:18px;line-height:1.7;color:rgba(255,255,255,.82);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:var(--s-32);}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:40px;margin-top:var(--s-48);
  padding-top:28px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-stats li{min-width:120px;}
.hero-stats b{display:block;font-size:32px;font-weight:700;color:#F1EDE7;line-height:1.2;}
.hero-stats span{display:block;font-size:13px;color:rgba(255,255,255,.66);margin-top:4px;}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;
  cursor:pointer;border:1px solid transparent;
  transition:background .24s var(--ease),color .24s var(--ease),transform .12s var(--ease),border-color .24s var(--ease);
}
.btn-main{background:var(--accent);color:#fff;}
.btn-main:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-ghost.light{border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost.light:hover{background:#fff;color:var(--ink);border-color:#fff;}
.tlink{
  color:var(--brand);font-weight:600;
  border-bottom:1px solid currentColor;padding-bottom:2px;text-decoration:none;
  transition:border-width .12s var(--ease),color .24s var(--ease);
}
.tlink:hover{border-bottom-width:2px;color:var(--brand-deep);}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding:8px 0;}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;
  background:rgba(47,93,87,.32);transform:translateX(-.5px);
}
.tl-item{position:relative;width:50%;padding:0 56px 48px 0;}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 48px 56px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;top:14px;width:11px;height:11px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 5px rgba(47,93,87,.12);
}
.tl-item:nth-child(odd) .tl-node{right:-5.5px;}
.tl-item:nth-child(even) .tl-node{left:-5.5px;}
.tl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 26px 24px;box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.tl-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.tl-num{
  font-size:32px;font-weight:700;color:var(--brand);line-height:1;
  letter-spacing:-0.02em;
}
.tl-card h3{font-size:20px;margin:14px 0 10px;}
.tl-card p{font-size:15.5px;color:var(--text-2);line-height:1.8;}

/* ---------- 场景图文交替 ---------- */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0;border-top:1px solid var(--line);}
.scene-row:first-of-type{border-top:0;padding-top:0;}
.scene-row.rev .scene-media{order:2;}
.scene-media{
  border-radius:var(--r-card);overflow:hidden;background:var(--muted);
  aspect-ratio:3/2;border:1px solid var(--line);
}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease);}
.scene-media:hover img{transform:scale(1.03);}
.scene-body h3{font-size:23px;margin-bottom:14px;}
.scene-body p{color:var(--text-2);font-size:16px;}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  display:inline-block;font-size:12.5px;line-height:1.6;padding:3px 11px;border-radius:999px;
  border:1px solid rgba(47,93,87,.32);color:var(--brand);background:rgba(47,93,87,.04);
}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;display:flex;flex-direction:column;gap:12px;
  box-shadow:var(--sh-1);transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:rgba(47,93,87,.28);}
.rel-card i{font-size:18px;color:var(--brand);}
.rel-card h3{font-size:19px;}
.rel-card p{font-size:14.5px;color:var(--text-2);flex:1;}
.rel-card .tlink{align-self:flex-start;font-size:14.5px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;color:var(--ink);
  font-size:17.5px;font-weight:600;line-height:1.6;
  padding:22px 40px 22px 0;border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px;}
.faq-acc .accordion-button::after{
  width:13px;height:13px;background-size:13px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 5.5 8 10.5 13 5.5' fill='none' stroke='%232F5D57' stroke-width='1' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  transition:transform .24s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(-180deg);}
.faq-acc .accordion-body{padding:0 40px 24px 0;font-size:15.5px;line-height:1.85;color:var(--text-2);}

/* ---------- CTA + 表单 ---------- */
.cta-band{
  background:var(--brand-deep);color:#fff;border-radius:var(--r-card);
  padding:64px 56px;
}
.cta-band h2{font-size:32px;color:#fff;max-width:620px;}
.cta-band .lead{color:rgba(255,255,255,.74);margin-top:14px;max-width:600px;}
.apply-form{margin-top:var(--s-32);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:rgba(255,255,255,.72);font-weight:600;}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.22);border-radius:var(--r-btn);
  color:#fff;padding:12px 14px;font-size:15px;line-height:1.6;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.38);}
.field input:focus,.field textarea:focus{outline:none;border-color:#fff;background:rgba(255,255,255,.12);}
.field textarea{min-height:112px;resize:vertical;}
.form-tip{font-size:13px;color:rgba(255,255,255,.55);margin-top:14px;}
.form-msg{margin-top:14px;font-size:13.5px;color:#F0C9B8;min-height:20px;}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink);color:rgba(255,255,255,.68);margin-top:auto;padding:72px 0 28px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px;}
.foot-brand .brand-mark{background:var(--brand);}
.site-foot p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.58);}
.foot-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.foot-col li{margin-bottom:10px;}
.foot-col a{font-size:14px;color:rgba(255,255,255,.62);}
.foot-col a:hover{color:#fff;}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.in{opacity:1;transform:none;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--side-w:88px;}
  .side-shell{padding:24px 14px 18px;align-items:center;}
  .brand-text,.side-link span,.side-foot,.side-brand{padding-left:0;padding-right:0;justify-content:center;}
  .side-brand{padding-bottom:18px;}
  .side-link{justify-content:center;padding:12px 10px;}
  .side-link.active::before{top:8px;bottom:8px;}
  .wrap{padding-left:32px;padding-right:32px;}
  .page-hero{padding:60px 40px 56px;}
  .page-hero h1{font-size:38px;}
}
@media (max-width:991.98px){
  .side-shell{display:none;}
  .mobile-bar{display:flex;}
  .main-shell{margin-left:0;padding-top:56px;}
  .wrap{padding-left:24px;padding-right:24px;}
  .page-hero{padding:52px 28px 48px;}
  .page-hero h1{font-size:32px;}
  .hero-sub{font-size:16.5px;}
  .hero-stats{gap:28px;margin-top:36px;}
  .hero-stats b{font-size:26px;}
  .sec{padding:64px 0;}
  .sec-head h2{font-size:28px;}
  .timeline::before{left:5px;}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 32px 34px;}
  .tl-item:nth-child(odd) .tl-node,.tl-item:nth-child(even) .tl-node{left:-0.5px;right:auto;}
  .scene-row{grid-template-columns:1fr;gap:26px;padding:36px 0;}
  .scene-row.rev .scene-media{order:0;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:44px 26px;}
  .cta-band h2{font-size:26px;}
  .form-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  body{font-size:16px;}
  .wrap{padding-left:20px;padding-right:20px;}
  .page-hero{padding:44px 20px 40px;margin-top:16px;}
  .page-hero h1{font-size:27px;line-height:1.3;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .hero-stats{gap:20px;}
  .hero-stats li{min-width:calc(50% - 10px);}
  .sec-head h2{font-size:24px;}
  .scene-body h3{font-size:20px;}
  .foot-grid{grid-template-columns:1fr;}
  .apply-form .btn-main{width:100%;min-height:48px;}
}

/* roulang page: category3 */
:root{
  --ink:#12161A;
  --ink-soft:#4A5057;
  --brand:#2F5D57;
  --brand-deep:#24463F;
  --accent:#C4623C;
  --accent-deep:#A94F2E;
  --bg:#F6F4F0;
  --surface:#FFFFFF;
  --surface-alt:#EDEAE4;
  --line:rgba(18,22,26,.08);
  --line-strong:rgba(18,22,26,.16);
  --ok:#3F7A55;
  --warn:#B4553A;
  --r-card:8px;
  --r-btn:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,22,26,.06);
  --sh-2:0 10px 30px rgba(18,22,26,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--brand-deep)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25;color:var(--ink)}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:1px}
::selection{background:rgba(47,93,87,.16)}

/* ---------- 左侧 App Shell ---------- */
.app-side{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--side-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:24px 16px 20px;
  z-index:1040;
  transition:width .24s var(--ease);
}
.side-brand{
  display:flex;align-items:center;gap:10px;
  padding:6px 10px 22px;
  color:var(--brand);
}
.side-brand .brand-mark{width:30px;height:30px;flex:0 0 30px;color:var(--brand)}
.side-brand b{
  font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--ink);
  line-height:1.3;
}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;
  border-radius:6px;
  font-size:15px;
  color:var(--ink-soft);
  white-space:nowrap;
}
.side-link i{width:22px;text-align:center;font-size:16px;flex:0 0 22px}
.side-link:hover{background:var(--surface-alt);color:var(--brand)}
.side-link.active{
  background:rgba(47,93,87,.08);
  color:var(--brand);
  font-weight:600;
}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.side-foot{margin-top:auto;padding:18px 10px 0;border-top:1px solid var(--line)}
.side-cta{
  display:block;text-align:center;
  background:var(--accent);color:#fff;
  font-size:14px;font-weight:600;
  padding:11px 14px;border-radius:var(--r-btn);
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.side-cta:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.side-meta{
  margin:14px 0 0;font-size:13px;line-height:1.7;color:rgba(18,22,26,.5);
}

/* ---------- 移动端顶栏 / 抽屉 ---------- */
.mobile-topbar{
  position:fixed;top:0;left:0;right:0;height:56px;
  display:flex;align-items:center;gap:12px;
  padding:0 14px;
  background:rgba(246,244,240,.94);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  z-index:1050;
}
.topbar-toggle{
  width:40px;height:40px;border:1px solid var(--line-strong);border-radius:6px;
  background:transparent;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;
}
.topbar-toggle:hover{background:var(--surface-alt)}
.topbar-brand{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.drawer-nav{width:280px;background:var(--surface);border-right:1px solid var(--line)}
.drawer-nav .offcanvas-body{padding:20px 16px}
.drawer-nav .side-link{font-size:16px;padding:13px 14px}
.drawer-brand{display:flex;align-items:center;gap:10px;padding:6px 10px 18px;color:var(--brand)}
.drawer-brand .brand-mark{width:28px;height:28px;color:var(--brand)}
.drawer-brand b{color:var(--ink);font-size:16px}

/* ---------- 主区域 ---------- */
.page-main{
  max-width:1160px;
  margin:0 auto;
  padding:0 48px;
}
@media (min-width:992px){
  body{padding-left:var(--side-w)}
}
@media (min-width:992px) and (max-width:1199.98px){
  :root{--side-w:88px}
  .side-brand b,.side-link span,.side-foot{display:none}
  .side-brand{justify-content:center;padding:6px 0 22px}
  .side-link{justify-content:center;padding:13px 0}
  .side-link::after{
    content:attr(data-title);
    position:absolute;left:calc(100% + 10px);top:50%;transform:translateY(-50%);
    background:var(--ink);color:#fff;font-size:13px;line-height:1.4;
    padding:6px 10px;border-radius:6px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .2s var(--ease);
  }
  .side-link:hover::after{opacity:1}
}
@media (max-width:991.98px){
  body{padding-top:56px}
  .app-side{display:none}
  .page-main{padding:0 32px}
}

/* ---------- 通用板块 ---------- */
.sec{padding:88px 0}
.sec-tight{padding:64px 0}
.sec-line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-block;
  font-size:13px;letter-spacing:.06em;
  color:var(--brand);
  background:rgba(47,93,87,.08);
  padding:6px 14px;border-radius:var(--r-pill);
  margin-bottom:20px;
}
.sec-head{max-width:720px;margin-bottom:48px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:16px}
.sec-head p{color:var(--ink-soft);font-size:16.5px;margin:0}
.muted{color:var(--ink-soft)}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:32px 0 0;font-size:13px;color:rgba(18,22,26,.55);
}
.crumbs a{color:rgba(18,22,26,.55)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{opacity:.45}

/* ---------- 页头 ---------- */
.cat-hero{padding:36px 0 64px;border-bottom:1px solid var(--line)}
.cat-hero h1{
  font-size:clamp(29px,3.9vw,48px);
  line-height:1.22;
  margin:0 0 22px;
}
.lede{font-size:17px;line-height:1.85;color:var(--ink-soft);max-width:620px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 30px}
.tag-pill{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--brand);
  border:1px solid rgba(47,93,87,.28);
  border-radius:var(--r-pill);
  padding:6px 14px;background:rgba(255,255,255,.7);
}
.tag-pill i{font-size:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{margin:0}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.hero-figure figcaption{
  margin-top:12px;font-size:13px;color:rgba(18,22,26,.5);
}

/* ---------- 按钮 ---------- */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;
  padding:13px 26px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.btn-c i{font-size:13px}
.btn-c-primary{background:var(--accent);color:#fff}
.btn-c-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-c-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-c-ghost:hover{background:var(--ink);color:#fff}
.btn-c-light{background:#fff;color:var(--ink)}
.btn-c-light:hover{background:var(--surface-alt);color:var(--ink);transform:translateY(-1px)}
.btn-c-outline-light{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-c-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--brand);
  border-bottom:1px solid var(--brand);
  padding-bottom:3px;
}
.link-arrow:hover{border-bottom-width:2px;color:var(--brand-deep)}

/* ---------- 对比表 ---------- */
.table-wrap{
  overflow-x:auto;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
table.compare{width:100%;min-width:720px;border-collapse:collapse}
table.compare th,table.compare td{
  padding:18px 22px;text-align:left;
  font-size:15px;line-height:1.7;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.compare thead th{
  background:var(--surface-alt);
  font-size:14px;font-weight:600;color:var(--ink);
  letter-spacing:.01em;
}
table.compare thead th:nth-child(2){color:var(--ink-soft);font-weight:500}
table.compare thead th:nth-child(3){color:var(--brand)}
table.compare tbody td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
table.compare tbody td:nth-child(2){color:var(--ink-soft)}
table.compare tbody td:nth-child(3){color:var(--ink)}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr:hover td{background:rgba(47,93,87,.035)}
.table-note{margin:16px 0 0;font-size:13px;color:rgba(18,22,26,.5)}

/* ---------- 双列描边清单 ---------- */
.outline-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
.outline-box{
  background:var(--surface);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  padding:32px 30px 24px;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.outline-box:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.outline-box h3{
  font-size:20px;margin-bottom:6px;
  display:flex;align-items:center;gap:10px;
}
.outline-box h3 i{color:var(--brand);font-size:17px}
.outline-box .box-sub{font-size:14px;color:rgba(18,22,26,.55);margin:0 0 20px}
.outline-list li{
  position:relative;
  padding:14px 0 14px 26px;
  font-size:15.5px;line-height:1.75;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.outline-list li:last-child{border-bottom:0;padding-bottom:0}
.outline-list li::before{
  content:"";position:absolute;left:2px;top:23px;
  width:7px;height:7px;border-radius:2px;background:var(--brand);opacity:.75;
}

/* ---------- 深色数据带 ---------- */
.stat-band{
  background:var(--brand-deep);
  color:#fff;
  border-radius:var(--r-card);
  padding:56px 44px;
}
.stat-band h2{color:#fff;font-size:clamp(21px,2.2vw,26px);margin-bottom:40px}
.stat-band .band-sub{color:rgba(255,255,255,.68);font-size:15px;margin:10px 0 0;max-width:620px}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:8px}
.stat{padding:0 26px;border-left:1px solid rgba(255,255,255,.16)}
.stat:first-child{border-left:0;padding-left:0}
.stat .num{
  font-size:clamp(32px,3.4vw,46px);
  font-weight:700;letter-spacing:-.02em;line-height:1.1;color:#fff;
}
.stat .num em{font-style:normal;font-size:.52em;margin-left:4px;color:#E9A88C}
.stat p{margin:12px 0 0;font-size:14px;line-height:1.65;color:rgba(255,255,255,.72)}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);
}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--line)}
.faq-acc .accordion-button{
  background:transparent;
  font-size:17.5px;font-weight:600;color:var(--ink);
  padding:24px 46px 24px 0;
  box-shadow:none;border-radius:0;
  line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){
  background:transparent;color:var(--brand);box-shadow:none;
}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq-acc .accordion-button::after{
  display:block;
  width:9px;height:9px;
  border-right:1.5px solid var(--brand);
  border-bottom:1.5px solid var(--brand);
  background-image:none;
  position:absolute;right:8px;top:50%;
  transform:translateY(-70%) rotate(45deg);
  transition:transform .24s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-30%) rotate(-135deg)}
.faq-acc .accordion-body{
  padding:0 46px 26px 0;
  font-size:15px;line-height:1.85;color:var(--ink-soft);
}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.rel-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);color:inherit}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rel-card .rel-body{padding:22px 22px 26px}
.rel-card h3{font-size:18px;margin-bottom:8px;color:var(--ink)}
.rel-card p{font-size:14.5px;color:var(--ink-soft);margin:0 0 16px}
.rel-card .rel-more{
  font-size:14px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;
}
.rel-card:hover h3{color:var(--brand)}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 8px}
.cta-band{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  padding:76px 48px;
  color:#fff;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(18,22,26,.9) 0%,rgba(18,22,26,.68) 62%,rgba(18,22,26,.5) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.cta-inner{position:relative;z-index:1;max-width:660px}
.cta-inner h2{color:#fff;font-size:clamp(24px,2.8vw,34px);margin-bottom:16px}
.cta-inner p{color:rgba(255,255,255,.78);font-size:16px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.cta-points{display:flex;flex-wrap:wrap;gap:22px}
.cta-points span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.82);
}
.cta-points i{color:#E9A88C;font-size:13px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.7);
  margin-top:88px;
  padding:72px 0 0;
}
.foot-inner{max-width:1160px;margin:0 auto;padding:0 48px}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:56px;
}
.foot-brand .foot-logo{display:flex;align-items:center;gap:10px;margin-bottom:18px;color:#fff}
.foot-brand .foot-logo .brand-mark{width:28px;height:28px;color:#8FBDB4}
.foot-brand .foot-logo b{font-size:16px;color:#fff;letter-spacing:-.01em}
.foot-brand p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.62);max-width:300px}
.site-footer h4{
  font-size:14px;color:#fff;margin-bottom:18px;font-weight:600;letter-spacing:.02em;
}
.site-footer li{margin-bottom:11px}
.site-footer a{color:rgba(255,255,255,.68);font-size:14px}
.site-footer a:hover{color:#fff}
.foot-info li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.6);margin-bottom:11px}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .page-main{padding:0 32px}
  .foot-inner{padding:0 32px}
}
@media (max-width:991.98px){
  .cat-hero{padding:24px 0 52px}
  .sec{padding:64px 0}
  .sec-tight{padding:48px 0}
  .stat-band{padding:44px 28px}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 0}
  .stat{border-left:0;padding:0}
  .stat:nth-child(even){padding-left:24px;border-left:1px solid rgba(255,255,255,.16)}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
  .cta-band{padding:56px 32px}
}
@media (max-width:767.98px){
  .outline-cols{grid-template-columns:1fr;gap:20px}
  .rel-grid{grid-template-columns:1fr}
  .sec-head{margin-bottom:32px}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .page-main{padding:0 20px}
  .foot-inner{padding:0 20px}
  .crumbs{padding-top:24px}
  .stat-band{padding:36px 22px}
  .stat-grid{grid-template-columns:1fr;gap:24px}
  .stat:nth-child(even){padding-left:0;border-left:0}
  .stat{border-top:1px solid rgba(255,255,255,.14);padding-top:22px}
  .stat:first-child{border-top:0;padding-top:0}
  .cta-band{padding:44px 22px}
  .btn-c{width:100%}
  .cta-actions{flex-direction:column}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;gap:8px}
  .hero-actions .btn-c{width:100%}
}

/* roulang page: category4 */
:root{
  --brand:#2F5D57;
  --brand-d:#24463F;
  --accent:#C4623C;
  --accent-d:#A94F2E;
  --ink:#12161A;
  --bg:#F6F4F0;
  --card:#FFFFFF;
  --soft:#EDEAE4;
  --line:rgba(18,22,26,.08);
  --muted:rgba(18,22,26,.62);
  --ok:#3F7A55;
  --warn:#B4553A;
  --r-card:8px;
  --r-btn:6px;
  --sh:0 1px 2px rgba(18,22,26,.06);
  --sh-h:0 10px 30px rgba(18,22,26,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease);}
img{max-width:100%;height:auto;display:block;}
button,input,textarea,select{font:inherit;color:inherit;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:1px;}

/* ===== 布局骨架 ===== */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:26px;
  padding:24px 14px;z-index:1040;overflow-y:auto;
}
.app-main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}
.shell{width:100%;max-width:1160px;margin:0 auto;padding:0 48px;}

/* ===== 品牌 ===== */
.brand{display:flex;align-items:center;gap:10px;padding:2px 8px;}
.brand-mark{
  width:34px;height:34px;flex:none;border-radius:8px;
  background:rgba(47,93,87,.10);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{font-size:15.5px;font-weight:700;letter-spacing:-.01em;}

/* ===== 侧边导航 ===== */
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-link{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:6px;
  border-left:3px solid transparent;
  font-size:14.5px;color:rgba(18,22,26,.72);
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.side-link i{width:18px;text-align:center;color:var(--brand);opacity:.8;font-size:15px;}
.side-link:hover{background:var(--soft);color:var(--ink);}
.side-link.active{background:var(--soft);color:var(--brand);font-weight:600;border-left-color:var(--brand);}
.side-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:#fff;padding:12px;
  border-radius:var(--r-btn);font-size:14px;font-weight:600;
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.side-cta:hover{background:var(--accent-d);color:#fff;transform:translateY(-1px);}
.side-note{margin:12px 0 0;font-size:12.5px;line-height:1.6;color:var(--muted);text-align:center;}

/* ===== 移动顶栏 ===== */
.topbar{
  position:sticky;top:0;z-index:1030;height:56px;
  display:none;align-items:center;gap:14px;
  padding:0 20px;background:var(--bg);border-bottom:1px solid var(--line);
}
.icon-btn{
  width:38px;height:38px;flex:none;border:1px solid var(--line);
  background:var(--card);border-radius:6px;color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .24s var(--ease);
}
.icon-btn:hover{background:var(--soft);}
.brand-mini{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;}
.brand-mini .brand-mark{width:30px;height:30px;}
.brand-mini .brand-mark svg{width:19px;height:19px;}

/* ===== 抽屉 ===== */
#navDrawer{--bs-offcanvas-width:280px;}
.drawer{background:var(--card);border-right:1px solid var(--line);}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.drawer .offcanvas-body{padding:16px 12px 24px;display:flex;flex-direction:column;gap:6px;}
.drawer-link{
  display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:6px;
  border-left:3px solid transparent;font-size:15px;color:rgba(18,22,26,.75);
}
.drawer-link i{width:18px;text-align:center;color:var(--brand);}
.drawer-link.active{background:var(--soft);color:var(--brand);font-weight:600;border-left-color:var(--brand);}
.drawer-cta{
  margin-top:14px;display:block;text-align:center;
  background:var(--accent);color:#fff;padding:13px;
  border-radius:var(--r-btn);font-weight:600;
}
.drawer-cta:hover{background:var(--accent-d);color:#fff;}

/* ===== 首屏 ===== */
.page-hero{
  position:relative;overflow:hidden;
  padding:92px 0 76px;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(158deg,rgba(18,22,26,.84),rgba(18,22,26,.50));
}
.page-hero > .shell{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:20px;}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.crumb .sep{opacity:.5;}
.page-hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,50px);
  line-height:1.2;letter-spacing:-.02em;max-width:860px;
}
.hero-sub{
  color:rgba(255,255,255,.84);
  font-size:clamp(16px,1.55vw,20px);line-height:1.75;
  max-width:640px;margin:22px 0 0;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:44px;margin-top:40px;padding-top:28px;border-top:1px solid rgba(255,255,255,.16);}
.hero-facts .fact b{display:block;font-size:30px;line-height:1.15;color:#fff;letter-spacing:-.02em;}
.hero-facts .fact span{display:block;margin-top:6px;font-size:13px;color:rgba(255,255,255,.68);}

/* ===== 按钮 ===== */
.btn-primary-x{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:#fff;border:1px solid var(--accent);
  border-radius:var(--r-btn);padding:12px 24px;font-size:15px;font-weight:600;
  cursor:pointer;transition:background .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.btn-primary-x:hover{background:var(--accent-d);border-color:var(--accent-d);color:#fff;transform:translateY(-1px);}
.btn-ghost-x{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;border:1px solid var(--ink);color:var(--ink);
  border-radius:var(--r-btn);padding:12px 24px;font-size:15px;
  cursor:pointer;transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.btn-ghost-x:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.page-hero .btn-ghost-x{border-color:rgba(255,255,255,.6);color:#fff;}
.page-hero .btn-ghost-x:hover{background:#fff;border-color:#fff;color:var(--ink);}

/* ===== 板块 ===== */
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.sec-head{max-width:740px;margin-bottom:48px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);margin-bottom:14px;
}
.sec-head h2{font-size:clamp(24px,2.7vw,34px);line-height:1.3;}
.sec-head p{margin:16px 0 0;color:var(--muted);font-size:16px;line-height:1.8;}

/* ===== 2×2 卡片 ===== */
.grid-2x2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.use-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.use-card:hover{transform:translateY(-2px);box-shadow:var(--sh-h);border-color:rgba(47,93,87,.28);}
.use-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--soft);}
.use-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease);}
.use-card:hover .thumb img{transform:scale(1.03);}
.use-card .body{padding:24px 26px 28px;display:flex;flex-direction:column;flex:1;}
.use-card h3{font-size:20px;margin-bottom:10px;}
.use-card p{color:var(--muted);font-size:15px;line-height:1.8;margin-bottom:18px;}
.card-link{
  display:inline-flex;align-items:center;gap:7px;margin-top:auto;
  font-size:14px;font-weight:600;color:var(--brand);
  border-bottom:1px solid currentColor;padding-bottom:2px;
  transition:color .24s var(--ease);
}
.card-link:hover{color:var(--accent);}
.card-link i{font-size:12px;}

/* ===== 数据带 ===== */
.stat-band{background:var(--ink);color:#fff;padding:76px 0;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-grid .stat{padding:0 30px;border-left:1px solid rgba(255,255,255,.13);}
.stat-grid .stat:first-child{border-left:none;padding-left:0;}
.stat-grid .stat b{display:block;font-size:clamp(32px,3.6vw,52px);line-height:1.1;letter-spacing:-.02em;color:var(--accent);}
.stat-grid .stat span{display:block;margin-top:12px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.68);}

/* ===== FAQ ===== */
.faq-wrap{max-width:880px;}
.faq-wrap .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line);
}
.faq-wrap .accordion-button{
  position:relative;
  background:transparent;color:var(--ink);
  font-size:17px;font-weight:600;line-height:1.6;
  padding:22px 52px 22px 0;box-shadow:none;border-radius:0;
  transition:color .24s var(--ease);
}
.faq-wrap .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.faq-wrap .accordion-button:focus{box-shadow:none;border-color:transparent;outline:none;}
.faq-wrap .accordion-button:focus-visible{outline:2px solid var(--brand);outline-offset:1px;}
.faq-wrap .accordion-button::after{
  content:"";background-image:none;
  position:absolute;right:10px;top:50%;
  width:10px;height:10px;margin-top:-7px;
  border-right:1.5px solid var(--brand);
  border-bottom:1.5px solid var(--brand);
  transform:rotate(45deg);
  transition:transform .24s var(--ease),margin-top .24s var(--ease);
}
.faq-wrap .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:-2px;}
.faq-wrap .accordion-body{
  padding:0 64px 24px 0;
  font-size:15px;line-height:1.85;color:var(--muted);
}
.faq-wrap .accordion-body p{margin-bottom:.9em;}

/* ===== 相关分类 ===== */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:block;padding:28px 26px;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-h);border-color:var(--brand);}
.rel-card h3{font-size:18px;margin-bottom:10px;}
.rel-card p{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:16px;}

/* ===== CTA 与表单 ===== */
.cta-band{
  background:var(--soft);border:1px solid var(--line);border-radius:var(--r-card);
  padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:56px;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;}
.cta-band .lead{margin:16px 0 24px;color:var(--muted);font-size:15.5px;line-height:1.85;}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:rgba(18,22,26,.78);padding:6px 0;}
.cta-list i{color:var(--brand);font-size:13px;margin-top:7px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13px;color:var(--muted);}
.field input,.field textarea{
  width:100%;padding:12px 14px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:15px;line-height:1.6;resize:vertical;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(47,93,87,.12);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(18,22,26,.35);}
.cta-form{margin-top:22px;}
.cta-form .btn-primary-x{width:100%;justify-content:center;height:48px;margin-top:20px;}
.form-note{margin:14px 0 0;font-size:13px;line-height:1.7;color:var(--muted);}
.form-note.is-ok{color:var(--ok);font-weight:600;}

/* ===== 页脚 ===== */
.site-foot{background:var(--ink);color:rgba(255,255,255,.7);margin-top:auto;padding:64px 0 0;}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:16px;}
.site-foot .brand-mark{background:rgba(255,255,255,.10);color:#9CCFC3;}
.foot-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin:0 0 20px;}
.quote-foot{
  display:flex;align-items:center;gap:12px;
  padding:16px;border-radius:var(--r-card);
  background:rgba(255,255,255,.06);
}
.quote-foot .avatar{
  width:44px;height:44px;flex:none;border-radius:50%;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;
}
.quote-foot b{display:block;font-size:14px;color:#fff;font-weight:600;}
.quote-foot em{display:block;font-size:12.5px;font-style:normal;color:rgba(255,255,255,.55);margin-top:2px;}
.foot-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.foot-col a{display:block;font-size:14px;padding:5px 0;color:rgba(255,255,255,.62);}
.foot-col a:hover{color:#fff;}
.foot-line{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin:0 0 10px;}
.foot-bottom{
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ===== 入场动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .shell{padding:0 40px;}
}
@media (max-width:1199.98px) and (min-width:992px){
  :root{--side-w:88px;}
  .app-side{padding:24px 10px;align-items:center;}
  .brand{padding:2px;justify-content:center;}
  .brand-text,.side-link span,.side-foot{display:none;}
  .side-nav{width:100%;}
  .side-link{justify-content:center;padding:12px 0;}
  .side-link i{width:auto;font-size:17px;}
}
@media (max-width:991.98px){
  .app-side{display:none;}
  .app-main{margin-left:0;}
  .topbar{display:flex;}
  .shell{padding:0 32px;}
  html{scroll-padding-top:72px;}
  .page-hero{padding:64px 0 56px;}
  .cta-band{grid-template-columns:1fr;gap:36px;padding:40px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767.98px){
  .shell{padding:0 20px;}
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .sec-head{margin-bottom:32px;}
  .grid-2x2{grid-template-columns:1fr;gap:20px;}
  .rel-grid{grid-template-columns:1fr;gap:16px;}
  .stat-band{padding:56px 0;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:36px 0;}
  .stat-grid .stat{border-left:none;padding:0;}
  .hero-facts{gap:28px;}
  .hero-facts .fact b{font-size:26px;}
  .faq-wrap .accordion-button{font-size:16px;padding:18px 44px 18px 0;}
  .faq-wrap .accordion-body{padding:0 32px 20px 0;}
  .cta-band{padding:28px 22px;border-radius:var(--r-card);}
  .form-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;gap:32px;}
  .foot-bottom{margin-top:32px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}