/* roulang page: index */
:root{
  --brand:#2A4B72;
  --brand-dark:#1B3350;
  --brand-soft:#E8EFF7;
  --accent:#C9743C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --section:#EDF1F6;
  --line:#DFE5EC;
  --text:#1A2430;
  --muted:#56616F;
  --faint:#8A94A0;
  --r-card:16px;
  --r-img:12px;
  --r-ctl:10px;
  --sh1:0 2px 8px rgba(23,42,66,.06);
  --sh2:0 8px 24px rgba(23,42,66,.08);
  --sh3:0 16px 40px rgba(23,42,66,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#2A4B72;
  --bs-primary-rgb:42,75,114;
  --bs-body-color:#1A2430;
  --bs-body-bg:#F5F7FA;
  --bs-border-color:#DFE5EC;
  --bs-link-color:#2A4B72;
  --bs-link-hover-color:#1B3350;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  background:var(--bg);
  color:var(--text);
  font-size:15px;
  line-height:1.85;
  letter-spacing .01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-dark)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;font-weight:650;line-height:1.35;color:var(--text)}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container,.container-fluid{width:100%;margin:0 auto;padding-left:20px;padding-right:20px;max-width:100%}
@media (min-width:768px){.container{max-width:744px;padding-left:24px;padding-right:24px}}
@media (min-width:992px){.container{max-width:984px}}
@media (min-width:1200px){.container{max-width:1200px}}
@media (min-width:1440px){.container{max-width:1320px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh1)}
.nav-top{
  height:64px;display:flex;align-items:center;gap:18px;
  overflow:hidden;
  transition:height .26s var(--ease),opacity .2s var(--ease);
}
body.is-scrolled .nav-top{height:0;opacity:0}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;
  letter-spacing:.02em;box-shadow:var(--sh1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:700;color:var(--brand-dark)}
.brand-sub{font-size:11px;color:var(--faint);letter-spacing:.06em}
.nav-search{
  flex:1 1 auto;max-width:380px;margin-left:auto;position:relative;
}
.nav-search input{
  width:100%;height:40px;border-radius:999px;border:1px solid var(--line);
  background:var(--section);padding:0 16px 0 40px;font-size:14px;
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--faint)}
.nav-search input:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(42,75,114,.12);
}
.nav-search i{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--faint);font-size:13px}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:inline-grid;place-items:center;color:var(--brand);cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.icon-btn:hover{background:var(--brand-soft);border-color:var(--brand);transform:translateY(-1px)}
.icon-btn.is-active{background:var(--brand-soft);border-color:var(--accent);color:var(--accent)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--sh1)}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark)}
.btn-soft{background:var(--brand-soft);color:var(--brand);border-color:transparent}
.btn-soft:hover{background:#dbe7f3;color:var(--brand-dark)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-lg{height:48px;padding:0 28px}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand);background:none;border:0;padding:4px 0;cursor:pointer;
}
.btn-link-arrow i{transition:transform .2s var(--ease)}
.btn-link-arrow:hover{color:var(--brand-dark)}
.btn-link-arrow:hover i{transform:translateX(3px)}
@media (min-width:992px){.btn{height:46px}}

/* 第二行 频道 Tabs */
.nav-channels{
  border-top:1px solid var(--line);
  background:#fff;
  transition:box-shadow .24s var(--ease);
}
body.is-scrolled .nav-channels{box-shadow:var(--sh1)}
.channel-wrap{position:relative}
.channel-wrap::after{
  content:"";position:absolute;top:0;right:0;width:36px;height:100%;
  background:linear-gradient(90deg,rgba(255,255,255,0),#fff);
  pointer-events:none;
}
.channel-scroll{
  display:flex;align-items:center;gap:8px;
  height:48px;overflow-x:auto;scroll-snap-type:x proximity;
  -ms-overflow-style:none;scrollbar-width:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-link{
  flex:0 0 auto;scroll-snap-align:start;
  height:34px;display:inline-flex;align-items:center;
  padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--muted);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.channel-link:hover{background:var(--brand-soft);color:var(--brand)}
.channel-link.active{background:var(--brand);color:#fff}
.nav-toggle{display:none}
@media (max-width:991px){
  .nav-search{display:none}
  .nav-top{height:56px;gap:12px}
  .nav-actions .btn{display:none}
  .nav-toggle{display:inline-grid}
}
/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(26,36,48,.42);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s;z-index:1040;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;
  transform:translateX(100%);transition:transform .28s var(--ease);
  z-index:1050;padding:20px;overflow-y:auto;box-shadow:var(--sh3);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:15px;font-weight:700;color:var(--brand-dark)}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:var(--r-ctl);
  font-size:15px;font-weight:600;color:var(--text);background:var(--bg);
  margin-bottom:8px;
}
.drawer-list a.active{background:var(--brand);color:#fff}
.drawer-search{position:relative;margin-bottom:16px}
.drawer-search input{
  width:100%;height:44px;border-radius:var(--r-ctl);border:1px solid var(--line);
  background:var(--section);padding:0 14px 0 38px;font-size:14px;
}
.drawer-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--faint);font-size:13px}
/* 移动搜索浮层 */
.search-overlay{
  position:fixed;inset:0;background:#fff;z-index:1060;padding:20px;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s;
}
.search-overlay.open{opacity:1;visibility:visible}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(245,248,252,.90),rgba(233,240,248,.82));
}
.hero-inner{position:relative;padding:56px 0 52px;max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;margin-bottom:18px;box-shadow:var(--sh1);
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
h1{
  font-size:clamp(26px,5.2vw,40px);font-weight:700;line-height:1.28;
  letter-spacing:.02em;color:var(--brand-dark);margin-bottom:16px;
}
.hero-sub{font-size:16px;color:var(--muted);max-width:600px;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-facts{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;
}
.fact{
  background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:var(--r-ctl);
  padding:14px 16px;box-shadow:var(--sh1);
}
.fact b{display:block;font-size:16px;font-weight:700;color:var(--brand-dark);margin-bottom:2px}
.fact span{font-size:13px;color:var(--muted)}
@media (min-width:768px){
  .hero-inner{padding:72px 0 68px}
  .hero-facts{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
}
@media (min-width:1200px){
  .hero-inner{padding:88px 0 84px}
}
@media (max-width:479px){
  .hero-inner{padding-top:44px;padding-bottom:44px}
}

/* ---------- 通用板块 ---------- */
.section{padding:48px 0}
.section-tight{padding:40px 0}
.section-alt{background:var(--section)}
.section-head{margin-bottom:26px;max-width:720px}
.section-head .kicker{
  display:inline-block;font-size:13px;font-weight:600;color:var(--accent);
  letter-spacing:.08em;margin-bottom:8px;
}
.section-head h2{
  font-size:clamp(20px,3vw,28px);font-weight:650;color:var(--brand-dark);margin-bottom:10px;
}
.section-head p{font-size:15px;color:var(--muted)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
@media (min-width:1200px){.section{padding:88px 0}.section-tight{padding:56px 0}}
@media (min-width:992px) and (max-width:1199px){.section{padding:72px 0}}

/* ---------- 卡片 ---------- */
.card-lite{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);height:100%;overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;
}
.card-lite:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--brand-soft)}
.card-media{
  position:relative;width:100%;aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.card-lite:hover .card-media img{transform:scale(1.03)}
.card-body-lite{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body-lite h3{
  font-size:17px;font-weight:600;line-height:1.45;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-lite:hover .card-body-lite h3{color:var(--brand-dark)}
.card-desc{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin:0;
}
.card-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);margin-top:auto;
}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
}
.dot-sep{width:4px;height:4px;border-radius:50%;background:var(--line)}

/* 目录卡 */
.catalog-card{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh1);height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.catalog-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--brand-soft)}
.catalog-num{
  flex:0 0 auto;font-size:15px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
  padding-top:2px;
}
.catalog-card h3{font-size:17px;font-weight:600;margin-bottom:6px}
.catalog-card p{font-size:14px;color:var(--muted);margin:0 0 8px}

/* 横版大卡 */
.card-wide{display:flex;flex-direction:column}
.card-wide .card-media{aspect-ratio:16/9}
.card-wide .card-body-lite{padding:22px;gap:12px}
.card-wide .card-body-lite h3{font-size:19px;-webkit-line-clamp:2}
.card-wide .card-desc{-webkit-line-clamp:3}
@media (min-width:768px){
  .card-wide{flex-direction:row}
  .card-wide .card-media{flex:0 0 44%;aspect-ratio:auto;min-height:230px}
  .card-wide .card-body-lite{flex:1;padding:28px}
}

/* 统计数据条 */
.stat-strip{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;
}
.stat-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh1);
}
.stat-item b{display:block;font-size:20px;font-weight:700;color:var(--brand);margin-bottom:4px;font-variant-numeric:tabular-nums}
.stat-item span{font-size:13px;color:var(--muted);line-height:1.7}
@media (min-width:992px){.stat-strip{grid-template-columns:repeat(4,minmax(0,1fr))}}

/* 横滑推荐 */
.hscroll{
  display:flex;gap:16px;overflow-x:auto;padding:4px 0 16px;
  scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none;
}
.hscroll::-webkit-scrollbar{display:none}
.hscroll > *{flex:0 0 78%;scroll-snap-align:start}
@media (min-width:768px){.hscroll > *{flex:0 0 44%}}
@media (min-width:1200px){.hscroll > *{flex:0 0 31%}}

/* CTA 条带 */
.cta-band{
  background:var(--brand-dark);border-radius:var(--r-card);
  padding:32px 26px;color:#fff;display:flex;flex-direction:column;gap:20px;
  box-shadow:var(--sh2);
}
.cta-band h2{color:#fff;font-size:clamp(19px,2.6vw,24px);margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.78);font-size:14px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-brand{background:#fff;color:var(--brand-dark)}
.cta-band .btn-brand:hover{background:var(--brand-soft);color:var(--brand-dark)}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
@media (min-width:992px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:40px 44px}
  .cta-band .cta-copy{max-width:640px}
}

/* FAQ */
.faq-accordion .accordion-item{
  border:0;background:var(--section);border-radius:var(--r-ctl);
  margin-bottom:12px;overflow:hidden;
}
.faq-accordion .accordion-button{
  background:var(--section);color:var(--text);font-size:16px;font-weight:600;
  padding:18px 20px;box-shadow:none;border-radius:var(--r-ctl);
}
.faq-accordion .accordion-button:not(.collapsed){
  background:var(--brand-soft);color:var(--brand-dark);
}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px rgba(42,75,114,.14);border:0}
.faq-accordion .accordion-button::after{
  width:16px;height:16px;background-size:16px;filter:invert(24%) sepia(21%) saturate(1043%) hue-rotate(177deg) brightness(92%) contrast(88%);
}
.faq-accordion .accordion-body{
  padding:4px 20px 20px;font-size:15px;color:var(--muted);line-height:1.85;
  border-left:3px solid var(--brand);margin-left:20px;
}

/* 空态 */
.empty-state{
  background:var(--section);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:40px 24px;text-align:center;color:var(--muted);
}
.empty-state i{font-size:22px;color:var(--faint);margin-bottom:10px;display:block}
.empty-state p{margin-bottom:8px;font-size:15px}

/* 表单 */
.form-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh1);
}
.form-label{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px}
.form-control,.form-select{
  border:1px solid var(--line);border-radius:var(--r-ctl);min-height:44px;
  font-size:15px;background:#fff;color:var(--text);
}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,75,114,.13);
}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(42,75,114,.13);border-color:var(--brand)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);padding:56px 0 0;margin-top:8px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.site-footer a{color:rgba(255,255,255,.78);font-size:14px}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.85;margin:14px 0 0;color:rgba(255,255,255,.7)}
.footer-links li{margin-bottom:10px}
.footer-contact li{display:flex;gap:10px;font-size:14px;margin-bottom:12px;color:rgba(255,255,255,.75)}
.footer-contact i{color:var(--accent);margin-top:5px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:40px;padding:20px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}}

/* 移动底部浮条 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;height:56px;z-index:1035;
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -2px 10px rgba(23,42,66,.07);
  display:flex;align-items:center;gap:10px;padding:0 14px;
  transform:translateY(110%);transition:transform .26s var(--ease);
}
.mobile-bar.show{transform:translateY(0)}
.mobile-bar .btn{flex:1}
@media (min-width:992px){.mobile-bar{display:none}}

/* 图片占位与比例 */
.ratio-16x9{aspect-ratio:16/9}
.img-cover{width:100%;height:100%;object-fit:cover;border-radius:var(--r-img)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .card-lite:hover{transform:none}
  .card-lite:hover .card-media img{transform:none}
  .btn:hover{transform:none}
}

/* roulang page: article */
:root{
  --brand:#2A4B72;
  --brand-dark:#1B3350;
  --brand-soft:#E8EFF7;
  --accent:#C9743C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --section:#EDF1F6;
  --line:#DFE5EC;
  --text:#1A2430;
  --muted:#56616F;
  --weak:#8A94A0;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh1:0 2px 8px rgba(23,42,66,.06);
  --sh2:0 8px 24px rgba(23,42,66,.08);
  --sh3:0 16px 40px rgba(23,42,66,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#2A4B72;
  --bs-primary-rgb:42,75,114;
  --bs-body-color:#1A2430;
  --bs-border-color:#DFE5EC;
  --bs-link-color:#2A4B72;
  --bs-link-hover-color:#1B3350;
  --bs-body-bg:#F5F7FA;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--brand-dark)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.02em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1440px){.container{max-width:1320px}}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ============ 顶栏 ============ */
.site-header{position:sticky;top:0;z-index:1000;background:#fff;box-shadow:0 1px 0 var(--line);transition:box-shadow .25s var(--ease)}
.site-header.scrolled{box-shadow:var(--sh1)}
.nav-top{display:flex;align-items:center;gap:18px;height:64px;transition:height .26s var(--ease),opacity .2s var(--ease)}
.site-header.scrolled .nav-top{height:0;opacity:0;overflow:hidden;pointer-events:none}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;letter-spacing:.06em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:700;color:var(--text)}
.brand-sub{font-size:10px;letter-spacing:.2em;color:var(--weak)}
.nav-search{
  flex:1 1 auto;max-width:420px;height:44px;display:flex;align-items:center;gap:10px;
  padding:0 16px;border-radius:999px;background:var(--section);border:1px solid transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search i{color:var(--weak);font-size:14px}
.nav-search input{flex:1;border:0;background:transparent;outline:none;font-size:14px;color:var(--text)}
.nav-search input::placeholder{color:var(--weak)}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,75,114,.12)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft)}
.icon-btn:active{transform:scale(.96)}
.nav-channels{background:#fff;border-top:1px solid var(--line)}
.channel-wrap{position:relative}
.channel-wrap::after{
  content:"";position:absolute;top:0;right:0;bottom:0;width:26px;pointer-events:none;
  background:linear-gradient(90deg,rgba(255,255,255,0),#fff);
}
.channel-scroll{
  display:flex;gap:6px;overflow-x:auto;padding:8px 0;scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-link{
  flex:0 0 auto;height:38px;display:inline-flex;align-items:center;padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap;scroll-snap-align:start;
}
.channel-link:hover{background:var(--brand-soft);color:var(--brand)}
.channel-link.active{background:var(--brand);color:#fff}
.channel-link.active:hover{background:var(--brand-dark);color:#fff}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark)}
.btn-light{background:#fff;color:var(--brand-dark)}
.btn-light:hover{background:#E9F0F8;color:var(--brand-dark);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.btn-text:hover{color:var(--brand-dark);gap:10px}
.btn-block{width:100%}

/* ============ 侧滑菜单 & 搜索浮层 ============ */
.drawer-backdrop{position:fixed;inset:0;background:rgba(16,26,38,.45);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:1100}
.drawer-backdrop.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);background:#fff;z-index:1200;
  padding:20px;overflow-y:auto;box-shadow:var(--sh3);transform:translateX(102%);
  transition:transform .3s var(--ease);
}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin:18px 0 22px}
.drawer-nav a{padding:12px 14px;border-radius:var(--r-sm);font-size:15px;font-weight:600;color:var(--text);background:var(--bg)}
.drawer-nav a.active{background:var(--brand);color:#fff}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.search-overlay{
  position:fixed;left:0;right:0;top:0;z-index:1300;background:#fff;box-shadow:var(--sh2);
  transform:translateY(-104%);transition:transform .3s var(--ease);padding:18px 0;
}
.search-overlay.open{transform:none}
.search-line{display:flex;align-items:center;gap:12px}
.search-line input{
  flex:1;height:46px;border-radius:999px;border:1px solid var(--line);background:var(--bg);
  padding:0 18px;font-size:15px;color:var(--text);outline:none;
}
.search-line input:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(42,75,114,.12)}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak)}
.crumb a{color:var(--weak)}
.crumb a:hover{color:var(--brand)}
.crumb-sep{color:#C3CCD6}
.crumb strong{color:var(--brand);font-weight:600}

/* ============ 文章头部 ============ */
.article-band{
  position:relative;padding:26px 0 38px;border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(245,248,252,.94),rgba(233,240,248,.96)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.article-head{margin-top:18px}
.tag-cat{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:600;
}
.article-head h1{
  margin:16px 0 18px;max-width:960px;
  font-size:clamp(24px,4.6vw,36px);font-weight:700;line-height:1.32;letter-spacing:.02em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:var(--muted)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px}
.article-meta i{color:var(--weak)}

/* ============ 双栏布局 ============ */
.article-layout{display:grid;grid-template-columns:1fr;gap:34px;padding:36px 0 0}
@media (min-width:992px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:44px;padding-top:52px;align-items:start}
}
.article-main{min-width:0}
.article-cover{
  margin:0 0 30px;border-radius:var(--r-lg);overflow:hidden;background:var(--brand-soft);
  box-shadow:var(--sh1);aspect-ratio:16/9;
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ============ 正文排版 ============ */
.article-content{font-size:16px;line-height:1.9;color:var(--text);word-wrap:break-word;overflow-wrap:break-word}
.article-content>*:first-child{margin-top:0}
.article-content h2{
  position:relative;margin:2em 0 .7em;padding-left:14px;
  font-size:clamp(20px,2.6vw,26px);font-weight:650;line-height:1.4;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:2px;background:var(--accent);
}
.article-content h3{margin:1.7em 0 .55em;font-size:18px;font-weight:600;line-height:1.5}
.article-content h4{margin:1.5em 0 .5em;font-size:16.5px;font-weight:600}
.article-content p{margin:0 0 1.1em}
.article-content ul,.article-content ol{margin:0 0 1.25em;padding-left:1.4em}
.article-content li{margin:.42em 0}
.article-content blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:4px solid var(--brand);
  background:var(--brand-soft);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--muted);
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:var(--r-md);margin:1.4em auto;box-shadow:var(--sh1)}
.article-content figure{margin:1.6em 0}
.article-content figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--weak)}
.article-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--brand-dark)}
.article-content table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:1.5em 0;font-size:15px}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-content th{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;white-space:nowrap}
.article-content code{background:var(--section);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-content pre{
  margin:1.5em 0;padding:18px;border-radius:var(--r-md);overflow-x:auto;
  background:var(--brand-dark);color:#E9F0F8;font-size:14px;line-height:1.7;
}
.article-content pre code{background:transparent;padding:0;color:inherit}
.article-content hr{margin:2.2em 0;border:0;border-top:1px solid var(--line)}

/* ============ 标签与操作 ============ */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px}
.tag-pill{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;
}
.tag-pill:hover{background:var(--brand);color:#fff}
.article-actions{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:24px;padding:18px 22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh1);
}
.action-tip{font-size:14px;color:var(--muted)}
.action-group{display:flex;align-items:center;gap:10px}
.action-chip{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--muted);font-size:14px;font-weight:600;cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.action-chip:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft)}
.action-chip.active{color:var(--accent);border-color:var(--accent);background:#FBF1E9}
.article-foot-nav{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:32px;padding-top:24px;border-top:1px solid var(--line);
}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px}
@media (min-width:992px){.article-side{position:sticky;top:112px}}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh1);padding:22px}
.side-card h3{margin:0 0 14px;padding-bottom:12px;border-bottom:1px solid var(--line);font-size:16px;font-weight:650}
.side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.side-list a{display:flex;gap:12px;padding:10px 8px;border-radius:var(--r-sm);font-size:14.5px;line-height:1.6;color:var(--text)}
.side-list a:hover{background:var(--brand-soft);color:var(--brand)}
.side-num{font-family:Inter,ui-monospace,monospace;font-size:13px;font-weight:700;color:var(--accent);line-height:1.9}
.pill-group{display:flex;flex-wrap:wrap;gap:8px}
.pill-group a{
  display:inline-flex;align-items:center;height:32px;padding:0 13px;border-radius:999px;
  background:var(--section);color:var(--muted);font-size:13px;font-weight:600;
}
.pill-group a:hover{background:var(--brand-soft);color:var(--brand)}
.side-cta{background:linear-gradient(160deg,var(--brand),var(--brand-dark));border:0;color:#fff}
.side-cta h3{color:#fff;border-bottom-color:rgba(255,255,255,.18)}
.side-cta p{margin:0 0 16px;font-size:14px;line-height:1.8;color:#CBD9E8}

/* ============ 深色区块 ============ */
.dark-band{background:linear-gradient(135deg,#1B3350 0%,#2A4B72 100%);color:#fff;padding:52px 0;margin-top:64px}
@media (min-width:992px){.dark-band{padding:72px 0;margin-top:88px}}
.dark-inner{display:grid;grid-template-columns:1fr;gap:26px;align-items:center}
@media (min-width:992px){.dark-inner{grid-template-columns:minmax(0,1fr) auto;gap:48px}}
.dark-eyebrow{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.14);color:#DCE7F3;font-size:12.5px;font-weight:600;letter-spacing:.04em}
.dark-band h2{margin:16px 0 12px;font-size:clamp(21px,3vw,28px);font-weight:650;line-height:1.4;color:#fff}
.dark-band p{margin:0;font-size:15.5px;line-height:1.85;color:#C6D5E6;max-width:640px}
.dark-actions{display:flex;flex-wrap:wrap;gap:12px}
.dark-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:22px}
.dark-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#DCE7F3}
.dark-points i{color:#8FB3DA}

/* ============ 相关推荐 ============ */
.section{padding:48px 0}
@media (min-width:992px){.section{padding:76px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.section-title{font-size:clamp(20px,3vw,28px);font-weight:650;line-height:1.35}
.section-desc{margin:8px 0 0;font-size:14px;color:var(--muted)}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.rcard{
  display:flex;gap:14px;padding:14px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rcard:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--brand-soft)}
.rcard-thumb{flex:0 0 42%;aspect-ratio:4/3;border-radius:var(--r-md);overflow:hidden;background:var(--brand-soft)}
.rcard-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.rcard:hover .rcard-thumb img{transform:scale(1.04)}
.rcard-body{min-width:0;display:flex;flex-direction:column}
.rcard-body h3{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard-body p{margin:8px 0 12px;font-size:13.5px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard-meta{margin-top:auto;font-size:12.5px;color:var(--weak)}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:56px 24px;box-shadow:var(--sh1);
}
.empty-icon{
  width:64px;height:64px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;margin:0 auto 18px;font-size:22px;
}
.empty-state h2{font-size:20px;font-weight:650;margin-bottom:10px}
.empty-state p{margin:0 auto 22px;max-width:460px;font-size:15px;color:var(--muted)}

/* ============ 移动端浮条 ============ */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:900;height:56px;padding:0 16px;
  display:flex;align-items:center;gap:10px;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(23,42,66,.08);transform:translateY(112%);
  transition:transform .3s var(--ease);padding-bottom:env(safe-area-inset-bottom);
}
.mobile-bar.show{transform:none}
.mobile-bar .btn{flex:1}
@media (min-width:992px){.mobile-bar{display:none}}

/* ============ 页脚 ============ */
.site-footer{margin-top:64px;background:var(--brand-dark);color:#B9C8DA;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:576px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:#8FA6C0}
.footer-desc{margin:16px 0 0;max-width:360px;font-size:14px;line-height:1.85;color:#A9BACD}
.site-footer h4{margin:0 0 16px;font-size:15px;font-weight:600;color:#fff}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:#B9C8DA}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.65;color:#B9C8DA}
.footer-contact i{margin-top:5px;color:#7E97B4}
.footer-contact+.btn{margin-top:18px}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;font-size:13px;color:#8FA6C0;
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .rcard:hover{transform:none}
  .btn:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#2A4B72;
  --brand-dark:#1B3350;
  --brand-soft:#E8EFF7;
  --accent:#C9743C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --section-alt:#EDF1F6;
  --line:#DFE5EC;
  --text:#1A2430;
  --muted:#56616F;
  --weak:#8A94A0;
  --r-card:16px;
  --r-img:12px;
  --r-ctl:10px;
  --sh1:0 2px 8px rgba(23,42,66,.06);
  --sh2:0 8px 24px rgba(23,42,66,.08);
  --sh3:0 16px 40px rgba(23,42,66,.12);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-primary:#2A4B72;
  --bs-body-bg:#F5F7FA;
  --bs-body-color:#1A2430;
  --bs-link-color:#2A4B72;
  --bs-link-hover-color:#1B3350;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:15px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t),box-shadow var(--t)}
a:hover{color:var(--brand-dark)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.38;letter-spacing:.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:2000;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-ctl) 0;
}
.skip-link:focus{left:0;color:#fff}

/* 容器 */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){
  .container{padding-left:24px;padding-right:24px}
}
@media (min-width:1200px){
  .container{max-width:1200px}
}
@media (min-width:1440px){
  .container{max-width:1320px}
}

/* 头部与频道导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.nav-top{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:64px;
  padding:10px 0;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;display:grid;place-items:center;
  font-weight:700;font-size:14px;letter-spacing:.06em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.02em;white-space:nowrap}
.brand-sub{font-size:10px;letter-spacing:.18em;color:var(--weak)}
.nav-search{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  width:100%;
  max-width:380px;
  height:42px;
  padding:0 16px;
  border-radius:999px;
  background:var(--section-alt);
  border:1px solid transparent;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.nav-search i{color:var(--weak);font-size:14px}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;line-height:1;
}
.nav-search input::placeholder{color:var(--weak)}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,75,114,.12)}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex:0 0 auto}
.icon-btn{
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand);
  display:grid;place-items:center;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.icon-btn:hover{background:var(--brand-soft);border-color:var(--brand-soft);transform:translateY(-1px)}
.icon-btn:active{transform:none}
.nav-toggle{display:grid}

@media (min-width:992px){
  .nav-search{display:flex;flex:1}
  .nav-actions{margin-left:12px}
  #openSearchMobile{display:none}
  .nav-toggle{display:none}
}

.nav-channels{background:#fff;border-top:1px solid var(--line)}
.channel-wrap{position:relative}
.channel-wrap::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:32px;
  background:linear-gradient(90deg,rgba(255,255,255,0),#fff);
  pointer-events:none;
}
.channel-scroll{
  display:flex;
  gap:8px;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  padding:8px 0;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-link{
  flex:0 0 auto;
  scroll-snap-align:start;
  display:inline-flex;align-items:center;
  height:36px;padding:0 15px;
  border-radius:999px;
  font-size:14px;
  color:var(--muted);
  white-space:nowrap;
  transition:background var(--t),color var(--t);
}
.channel-link:hover{background:var(--brand-soft);color:var(--brand)}
.channel-link.active{background:var(--brand);color:#fff}
.channel-link.active:hover{background:var(--brand-dark);color:#fff}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;min-height:44px;
  padding:0 22px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  text-align:center;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn:active{transform:translateY(0)}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--sh1)}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.8)}
.btn-sm{height:40px;min-height:40px;padding:0 16px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.btn-text i{transition:transform var(--t)}
.btn-text:hover i{transform:translateX(3px)}

/* 区块节奏 */
.section{padding:48px 0}
@media (min-width:768px){.section{padding:64px 0}}
@media (min-width:992px){.section{padding:88px 0}}
.section-alt{background:var(--section-alt)}
.section-head{
  display:flex;flex-wrap:wrap;gap:16px 24px;
  justify-content:space-between;align-items:flex-end;
  margin-bottom:28px;
}
.section-title{font-size:clamp(20px,3vw,28px);font-weight:650}
.section-desc{color:var(--muted);font-size:14px;line-height:1.8;max-width:600px;margin-top:10px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.04em;
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent)}
.eyebrow-light{color:#C9DCEF}

/* 首屏 */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(245,248,252,.95) 0%,rgba(233,240,248,.88) 55%,rgba(232,239,247,.92) 100%);
}
.page-hero .container{position:relative;z-index:2;padding-top:24px;padding-bottom:48px}
.breadcrumb-nav{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--weak);
}
.breadcrumb-nav a{color:var(--weak)}
.breadcrumb-nav a:hover{color:var(--brand)}
.breadcrumb-nav .current{color:var(--brand);font-weight:600}
.hero-title{
  font-size:clamp(26px,5.2vw,40px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:.02em;
  margin:18px 0 16px;
  max-width:16em;
}
.hero-lead{
  font-size:16px;
  color:var(--muted);
  line-height:1.85;
  max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
  margin-top:36px;
}
@media (min-width:768px){
  .hero-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:44px}
}
.stat-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:16px 18px;
  box-shadow:var(--sh1);
}
.stat-item strong{
  display:block;
  font-size:clamp(20px,2.6vw,26px);
  font-weight:700;
  color:var(--brand);
  line-height:1.2;
}
.stat-item span{display:block;font-size:13px;color:var(--muted);margin-top:4px}

/* 筛选条 */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:4px 0 14px;
  scrollbar-width:none;-ms-overflow-style:none;
  scroll-snap-type:x proximity;
}
.filter-bar::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  scroll-snap-align:start;
  display:inline-flex;align-items:center;
  height:38px;padding:0 16px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  font-size:14px;
  color:var(--muted);
  white-space:nowrap;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t);
}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* 功能卡片 */
.f-card{
  display:flex;flex-direction:column;
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.f-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--brand-soft)}
.f-cover{
  position:relative;
  aspect-ratio:16/9;
  background:var(--brand-soft);
  overflow:hidden;
}
.f-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.f-card:hover .f-cover img{transform:scale(1.03)}
.f-body{
  display:flex;flex-direction:column;gap:10px;
  padding:20px;
  flex:1;
}
.f-title{font-size:18px;font-weight:600;line-height:1.45}
.f-desc{font-size:14px;color:var(--muted);line-height:1.78;margin:0}
.f-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);
  margin-top:auto;
}
.tag-pill{
  display:inline-flex;align-items:center;
  padding:3px 10px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12px;font-weight:600;
}
.f-link{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.f-link i{font-size:12px;transition:transform var(--t)}
.f-card:hover .f-link i{transform:translateX(3px)}

.f-card-wide{flex-direction:column}
@media (min-width:768px){
  .f-card-wide{flex-direction:row;align-items:stretch}
  .f-card-wide .f-cover{flex:0 0 46%;aspect-ratio:auto;min-height:280px}
  .f-card-wide .f-body{padding:28px 30px;justify-content:center;gap:14px}
  .f-card-wide .f-title{font-size:22px}
  .f-card-wide .f-desc{font-size:15px;max-width:46ch}
}
.f-badge{
  position:absolute;top:14px;left:14px;
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:999px;
  background:rgba(255,255,255,.92);
  color:var(--brand);
  font-size:12px;font-weight:700;letter-spacing:.04em;
}

/* 深色区块 */
.dark-section{
  background:var(--brand-dark);
  color:#fff;
  padding:52px 0;
}
@media (min-width:992px){.dark-section{padding:88px 0}}
.dark-section .section-title{color:#fff}
.dark-title{font-size:clamp(20px,3vw,28px);font-weight:650;color:#fff;margin-bottom:14px}
.dark-desc{color:#BFD2E6;font-size:15px;line-height:1.85;max-width:44ch}
.bar-list{display:flex;flex-direction:column;gap:20px}
.bar-item{padding-bottom:4px}
.bar-top{
  display:flex;justify-content:space-between;align-items:baseline;
  font-size:14px;color:#D5E3F1;margin-bottom:8px;
}
.bar-top strong{font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em}
.bar-track{
  height:8px;border-radius:999px;
  background:rgba(255,255,255,.16);
  overflow:hidden;
}
.bar-fill{
  display:block;height:100%;
  border-radius:999px;
  background:var(--accent);
}

/* 流程 */
.step-card{
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 22px;
  box-shadow:var(--sh1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--brand-soft)}
.step-index{
  display:inline-block;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--accent);
  padding-bottom:10px;
  border-bottom:2px solid var(--brand-soft);
  margin-bottom:16px;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--muted);line-height:1.78;margin:0}

/* FAQ */
.accordion{
  --bs-accordion-border-width:0;
  --bs-accordion-border-radius:10px;
  --bs-accordion-btn-bg:var(--section-alt);
  --bs-accordion-active-bg:#fff;
  --bs-accordion-active-color:var(--brand);
  --bs-accordion-btn-color:var(--text);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-btn-padding-x:22px;
  --bs-accordion-btn-padding-y:18px;
  --bs-accordion-body-padding-x:22px;
  --bs-accordion-body-padding-y:20px;
}
.accordion-item{
  background:var(--section-alt);
  border-radius:var(--r-ctl)!important;
  margin-bottom:12px;
  overflow:hidden;
  border:1px solid transparent;
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  font-size:16px;font-weight:600;
  border-left:3px solid transparent;
  box-shadow:none;
}
.accordion-button:not(.collapsed){
  border-left-color:var(--brand);
  font-weight:650;
}
.accordion-button::after{
  width:14px;height:14px;background-size:14px;
  filter:invert(28%) sepia(19%) saturate(1200%) hue-rotate(180deg) brightness(90%) contrast(90%);
}
.accordion-body{
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
  padding-top:0;
}

/* 交叉推荐 */
.cross-card{
  display:flex;gap:18px;align-items:stretch;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px;
  height:100%;
  box-shadow:var(--sh1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.cross-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--brand-soft)}
.cross-thumb{
  flex:0 0 112px;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--brand-soft);
}
.cross-thumb img{width:100%;height:100%;object-fit:cover}
.cross-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.cross-body h3{font-size:17px;font-weight:600}
.cross-body p{font-size:14px;color:var(--muted);line-height:1.76;margin:0}
@media (max-width:575.98px){
  .cross-card{flex-direction:column}
  .cross-thumb{flex:none;aspect-ratio:16/9}
}

/* CTA 条带 */
.cta-band{background:var(--brand-soft);padding:40px 0}
@media (min-width:992px){.cta-band{padding:56px 0}}
.cta-inner{
  display:flex;flex-wrap:wrap;gap:20px;
  justify-content:space-between;align-items:center;
}
.cta-inner h2{font-size:clamp(19px,2.6vw,24px);font-weight:650;margin-bottom:8px}
.cta-inner p{color:var(--muted);font-size:14px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* 页脚 */
.site-footer{
  background:#FFFFFF;
  border-top:1px solid var(--line);
  padding:48px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:36px;
}
@media (min-width:576px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .brand{margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.85;max-width:38ch}
.site-footer h4{font-size:15px;font-weight:650;margin-bottom:14px;color:var(--text)}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--muted);margin-bottom:10px;line-height:1.7;
}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px}
.site-footer .btn-sm{margin-top:8px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 20px;
  justify-content:space-between;
  padding:18px 0 24px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--weak);
}

/* 浮层与抽屉 */
.overlay{
  position:fixed;inset:0;z-index:1050;
  background:rgba(19,31,46,.45);
  opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
  display:flex;align-items:flex-start;justify-content:center;
  padding:80px 20px 20px;
}
.overlay.open{opacity:1;visibility:visible}
.overlay-panel{
  width:100%;max-width:560px;
  background:#fff;border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh3);
  transform:translateY(-12px);
  transition:transform var(--t);
}
.overlay.open .overlay-panel{transform:none}
.overlay-head{
  display:flex;justify-content:space-between;align-items:center;
  font-size:15px;font-weight:650;margin-bottom:16px;
}
.overlay-hint{font-size:13px;color:var(--weak);margin:14px 0 0}
.nav-search-lg{display:flex;margin-left:0;max-width:none;width:100%;height:46px}

.drawer{
  position:fixed;inset:0;z-index:1060;
  background:rgba(19,31,46,.45);
  opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
}
.drawer.open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;right:0;top:0;
  height:100%;width:84%;max-width:340px;
  background:#fff;
  padding:20px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform var(--t);
  display:flex;flex-direction:column;gap:18px;
}
.drawer.open .drawer-panel{transform:none}
.drawer-head{display:flex;justify-content:space-between;align-items:center}
.drawer-links li{margin-bottom:6px}
.drawer-links a{
  display:flex;align-items:center;
  min-height:46px;padding:0 14px;
  border-radius:var(--r-ctl);
  font-size:15px;color:var(--text);
}
.drawer-links a:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-links a.active{background:var(--brand);color:#fff;font-weight:600}
.drawer-search{display:flex;margin-left:0;max-width:none;width:100%}

@media (prefers-reduced-motion: reduce){
  *{transition:none!important;animation:none!important}
  .f-card:hover,.step-card:hover,.cross-card:hover,.btn-brand:hover,.icon-btn:hover{transform:none!important}
  .f-card:hover .f-cover img{transform:none!important}
}

/* roulang page: category2 */
:root{
  --brand:#2A4B72;
  --brand-dark:#1B3350;
  --brand-soft:#E8EFF7;
  --accent:#C9743C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --sub:#EDF1F6;
  --line:#DFE5EC;
  --text:#1A2430;
  --muted:#56616F;
  --weak:#8A94A0;
  --r-card:16px;
  --r-img:12px;
  --r-ctl:10px;
  --sh1:0 2px 8px rgba(23,42,66,.06);
  --sh2:0 8px 24px rgba(23,42,66,.08);
  --sh3:0 16px 40px rgba(23,42,66,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#2A4B72;
  --bs-primary-rgb:42,75,114;
  --bs-body-color:#1A2430;
  --bs-body-bg:#F5F7FA;
  --bs-border-color:#DFE5EC;
  --bs-link-color:#2A4B72;
  --bs-link-hover-color:#1B3350;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:992px){body{font-size:16px}}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-dark)}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.02em}
h1{font-size:clamp(26px,5.2vw,40px);font-weight:700;line-height:1.28}
h2{font-size:clamp(20px,3vw,28px);font-weight:650;line-height:1.35}
h3{font-size:17px;font-weight:600;line-height:1.5}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
button,input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-soft);color:var(--brand-dark)}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1440px){.container{max-width:1320px}}

/* ============ 按钮体系 ============ */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:999px;border:1px solid var(--brand);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;line-height:1;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:999px;border:1px solid var(--brand);
  background:#fff;color:var(--brand);font-size:15px;font-weight:600;line-height:1;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover,.btn-ghost:focus{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand);
  min-height:44px;
}
.btn-link-arrow i{transition:transform .2s var(--ease)}
.btn-link-arrow:hover i{transform:translateX(4px)}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--brand);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand);background:var(--brand-soft)}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line)}
.nav-top{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:64px;max-height:80px;overflow:hidden;
  transition:max-height .25s var(--ease),opacity .2s var(--ease),padding .25s var(--ease);
}
.site-header.compact .nav-top{max-height:0;opacity:0}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;letter-spacing:.04em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:700;color:var(--text);white-space:nowrap}
.brand-sub{font-size:10px;letter-spacing:.16em;color:var(--weak)}
.nav-search{
  display:none;align-items:center;gap:10px;flex:1 1 auto;max-width:420px;
  height:44px;padding:0 16px;border:1px solid var(--line);border-radius:999px;background:var(--sub);
}
.nav-search i{color:var(--weak);font-size:14px}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--text);
}
.nav-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(42,75,114,.08)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-actions .btn-brand{display:none}
.nav-toggle{display:inline-flex}
@media (min-width:992px){
  .nav-search{display:flex}
  .nav-actions .btn-brand{display:inline-flex}
  .nav-toggle{display:none}
  #openSearchMobile{display:none}
}
.nav-channels{border-top:1px solid var(--line);background:#fff}
.site-header{box-shadow:none}
.site-header.compact{box-shadow:var(--sh1)}
.channel-wrap{position:relative}
.channel-wrap::after{
  content:"";position:absolute;right:0;top:0;width:24px;height:100%;
  background:linear-gradient(90deg,rgba(255,255,255,0),#fff);pointer-events:none;
}
.channel-scroll{
  display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;
  scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-link{
  flex:0 0 auto;scroll-snap-align:start;display:inline-flex;align-items:center;
  height:34px;padding:0 16px;border-radius:999px;font-size:14px;font-weight:600;
  color:var(--muted);white-space:nowrap;transition:background .2s var(--ease),color .2s var(--ease);
}
.channel-link:hover{background:var(--brand-soft);color:var(--brand)}
.channel-link.active{background:var(--brand);color:#fff}
.channel-link.active:hover{background:var(--brand-dark);color:#fff}

/* 抽屉菜单 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(26,36,48,.42);opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);z-index:1055;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:1060;
  transform:translateX(102%);transition:transform .26s var(--ease);
  padding:20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:var(--r-ctl);
  font-size:15px;font-weight:600;color:var(--text);background:var(--sub);
}
.drawer-links a.active{background:var(--brand);color:#fff}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}

/* 搜索浮层 */
.search-overlay{
  position:fixed;inset:0;background:rgba(245,247,250,.98);z-index:1070;
  display:none;padding:24px 20px;
}
.search-overlay.open{display:block}
.search-overlay .so-inner{max-width:640px;margin:64px auto 0}
.so-field{
  display:flex;align-items:center;gap:12px;height:52px;padding:0 18px;
  border:1px solid var(--line);border-radius:999px;background:#fff;box-shadow:var(--sh1);
}
.so-field input{border:0;outline:none;width:100%;font-size:16px;background:transparent}
.so-close{position:absolute;top:20px;right:20px}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;background-color:var(--brand-soft);
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:48px 0 56px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.78),rgba(245,248,252,.88));
}
.page-hero .container{position:relative;z-index:1}
.crumbs{font-size:13px;color:var(--weak);margin-bottom:18px}
.crumbs a{color:var(--weak)}
.crumbs a:hover{color:var(--brand)}
.crumbs span.sep{margin:0 6px}
.crumbs strong{color:var(--brand);font-weight:600}
.hero-grid{display:grid;gap:28px}
@media (min-width:992px){.hero-grid{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:40px;align-items:start}}
.hero-lead{max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--accent);letter-spacing:.06em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.hero-lead p.lead-text{font-size:16px;color:var(--muted);margin-top:16px;max-width:600px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
}
.hero-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh3);
}
.hero-card h3{font-size:17px;margin-bottom:6px}
.hero-card .hc-sub{font-size:13px;color:var(--weak);margin-bottom:16px}
.hc-list{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}
.hc-list li{display:flex;gap:10px;font-size:14px;color:var(--muted);line-height:1.7}
.hc-list i{color:var(--brand);margin-top:5px;font-size:13px}
.hc-actions{display:flex;flex-wrap:wrap;gap:10px}

/* ============ 数据条 ============ */
.stat-strip{padding:40px 0 0}
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (min-width:768px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}}
.stat-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.stat-item:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--brand-soft)}
.stat-num{font-size:26px;font-weight:700;color:var(--brand);line-height:1.2}
.stat-num em{font-style:normal;font-size:14px;color:var(--accent);margin-left:4px}
.stat-label{font-size:14px;font-weight:600;margin-top:6px}
.stat-note{font-size:13px;color:var(--weak);margin-top:2px}

/* ============ 通用板块 ============ */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:64px 0}}
@media (min-width:1200px){.section{padding:80px 0}}
.section-head{max-width:720px;margin-bottom:32px}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px}
.section-head .eyebrow{margin-bottom:8px}

/* ============ 场景交错行 ============ */
.scene-row{
  display:grid;gap:24px;align-items:center;
  padding:24px 0;
  border-top:1px solid var(--line);
}
.scene-row:first-of-type{border-top:0;padding-top:0}
@media (min-width:992px){
  .scene-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;padding:40px 0}
  .scene-row.reverse .scene-media{order:2}
  .scene-row.reverse .scene-body{order:1}
}
.scene-media{
  border-radius:var(--r-img);overflow:hidden;background:var(--brand-soft);
  box-shadow:var(--sh1);aspect-ratio:16/9;
}
.scene-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .3s var(--ease);
}
.scene-row:hover .scene-media img{transform:scale(1.03)}
.scene-index{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;letter-spacing:.06em;
  margin-bottom:12px;
}
.scene-body h3{font-size:19px;margin-bottom:10px}
.scene-body p{color:var(--muted);font-size:15px}
.points{margin:16px 0 18px;display:flex;flex-direction:column;gap:10px}
.points li{position:relative;padding-left:20px;font-size:14px;color:var(--muted);line-height:1.75}
.points li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:2px;border-radius:2px;background:var(--accent);
}

/* ============ 深色节奏区 ============ */
.dark-band{background:var(--brand-dark);color:#fff;padding:56px 0}
@media (min-width:1200px){.dark-band{padding:80px 0}}
.dark-band h2,.dark-band h3{color:#fff}
.dark-band .eyebrow{color:#E9B48C}
.dark-band .eyebrow::before{background:#E9B48C}
.dark-head{max-width:640px;margin-bottom:32px}
.dark-head p{color:rgba(255,255,255,.72);margin-top:10px}
.metric-row{display:grid;gap:16px}
@media (min-width:768px){.metric-row{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}}
.metric-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);padding:24px;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.metric-card:hover{background:rgba(255,255,255,.1);transform:translateY(-3px)}
.metric-card .m-num{font-size:30px;font-weight:700;color:#E9B48C;line-height:1;letter-spacing:.02em}
.metric-card h3{font-size:17px;margin:12px 0 8px}
.metric-card p{color:rgba(255,255,255,.72);font-size:14px}

/* ============ 清单双栏 ============ */
.check-grid{display:grid;gap:20px}
@media (min-width:768px){.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--sh1);transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.check-card:hover{box-shadow:var(--sh2);border-color:var(--brand-soft)}
.check-card h3{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.check-card h3 i{color:var(--brand)}
.check-card ul li{
  padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--muted);
  display:flex;justify-content:space-between;gap:12px;
}
.check-card ul li:last-child{border-bottom:0;padding-bottom:0}
.check-card ul li span.k{color:var(--text);font-weight:600}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px}
.accordion-item{
  border:0;border-radius:var(--r-card) !important;background:var(--sub);
  margin-bottom:12px;overflow:hidden;
}
.accordion-button{
  background:var(--sub);color:var(--text);font-size:16px;font-weight:600;
  padding:18px 20px;border-radius:var(--r-card) !important;box-shadow:none !important;
}
.accordion-button:not(.collapsed){background:#fff;color:var(--brand)}
.accordion-button:not(.collapsed)::after{filter:none}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-4px}
.accordion-item:has(.accordion-button:not(.collapsed)){
  background:#fff;border-left:3px solid var(--brand);
  box-shadow:var(--sh1);
}
.accordion-body{padding:4px 20px 20px;font-size:15px;color:var(--muted);background:#fff;line-height:1.85}

/* ============ 横滑推荐 ============ */
.rec-scroll{
  display:flex;gap:16px;overflow-x:auto;padding:4px 20px 16px;margin:0 -20px;
  scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none;
}
.rec-scroll::-webkit-scrollbar{display:none}
@media (min-width:768px){.rec-scroll{margin:0;padding:4px 0 16px}}
.rec-card{
  flex:0 0 82%;max-width:320px;scroll-snap-align:start;
  display:flex;gap:14px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--sh1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
@media (min-width:576px){.rec-card{flex:0 0 46%}}
@media (min-width:992px){.rec-card{flex:0 0 31%}}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--brand-soft)}
.rec-thumb{
  flex:0 0 88px;width:88px;height:66px;border-radius:var(--r-img);overflow:hidden;background:var(--brand-soft);
}
.rec-thumb img{width:100%;height:100%;object-fit:cover}
.rec-body .rec-tag{font-size:12px;color:var(--accent);font-weight:600}
.rec-body h3{font-size:15px;margin:4px 0 6px}
.rec-body span.more{font-size:13px;color:var(--muted)}

/* ============ CTA 条 ============ */
.cta-band{padding:0 0 56px}
@media (min-width:1200px){.cta-band{padding-bottom:80px}}
.cta-inner{
  background:var(--brand-soft);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;display:grid;gap:20px;align-items:center;
}
@media (min-width:992px){.cta-inner{grid-template-columns:minmax(0,1fr) auto;padding:36px 40px}}
.cta-inner h2{font-size:22px;margin-bottom:8px}
.cta-inner p{color:var(--muted);font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:48px 0 0;margin-top:8px}
.footer-grid{display:grid;gap:28px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}}
.footer-brand .brand{margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--muted);max-width:340px;line-height:1.8}
.site-footer h4{font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--muted);display:inline-block}
.footer-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.footer-contact{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--muted);line-height:1.7}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px}
.footer-bottom{
  margin-top:36px;border-top:1px solid var(--line);padding:18px 0;
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  font-size:13px;color:var(--weak);
}

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

/* roulang page: category3 */
:root{
  --brand:#2A4B72;
  --brand-dark:#1B3350;
  --brand-soft:#E8EFF7;
  --accent:#C9743C;
  --bg:#F5F7FA;
  --bg2:#EDF1F6;
  --card:#FFFFFF;
  --line:#DFE5EC;
  --text:#1A2430;
  --muted:#56616F;
  --weak:#8A94A0;
  --sh1:0 2px 8px rgba(23,42,66,.06);
  --sh2:0 8px 24px rgba(23,42,66,.08);
  --sh3:0 16px 40px rgba(23,42,66,.12);
  --r-card:16px;
  --r-img:12px;
  --r-ctl:10px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#2A4B72;
  --bs-primary-rgb:42,75,114;
  --bs-body-color:#1A2430;
  --bs-body-bg:#F5F7FA;
  --bs-border-color:#DFE5EC;
  --bs-link-color:#2A4B72;
  --bs-link-hover-color:#1B3350;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--text);letter-spacing:.02em;line-height:1.35}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:20px;
}
@media (min-width:1440px){
  .container{max-width:1320px}
}
@media (min-width:768px){
  .container{padding-inline:24px}
}
.btn:focus,.btn:active:focus,.form-control:focus{box-shadow:none}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1035;
  background:#fff;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--sh1)}
.nav-top{
  display:flex;
  align-items:center;
  gap:18px;
  height:64px;
  overflow:hidden;
  transition:height .24s var(--ease),opacity .18s var(--ease);
}
.site-header.scrolled .nav-top{height:0;opacity:0}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--brand),var(--brand-dark));
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.04em;
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.02em}
.brand-sub{font-size:10px;color:var(--weak);letter-spacing:.16em}
.nav-search{
  flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;
}
.nav-search i{position:absolute;left:14px;font-size:13px;color:var(--weak);pointer-events:none}
.nav-search input{
  width:100%;height:42px;border-radius:999px;border:1px solid var(--line);
  background:var(--bg);padding:0 18px 0 38px;font-size:14px;color:var(--text);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--weak)}
.nav-search input:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(42,75,114,.12);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--brand);display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;cursor:pointer;transition:.2s var(--ease);
}
.icon-btn:hover{background:var(--brand-soft);border-color:var(--brand)}
.nav-toggle{display:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.2s var(--ease);white-space:nowrap;
}
.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}

.nav-channels{background:#fff;border-top:1px solid var(--line);transition:box-shadow .2s var(--ease)}
.site-header.scrolled .nav-channels{box-shadow:var(--sh1)}
.channel-wrap{position:relative}
.channel-wrap::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:26px;pointer-events:none;
  background:linear-gradient(90deg,rgba(255,255,255,0),#fff);
}
.channel-scroll{
  display:flex;gap:4px;overflow-x:auto;scroll-snap-type:x proximity;
  -ms-overflow-style:none;scrollbar-width:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;flex:0 0 auto;scroll-snap-align:start;
  display:flex;align-items:center;min-height:48px;padding:0 14px;
  font-size:15px;color:var(--muted);white-space:nowrap;
}
.channel-link:hover{color:var(--brand)}
.channel-link.active{color:var(--brand);font-weight:600}
.channel-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;
  background:var(--brand);border-radius:3px 3px 0 0;
}

/* 移动抽屉与搜索浮层 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(26,36,48,.42);opacity:0;visibility:hidden;
  transition:.22s var(--ease);z-index:1040;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:#fff;z-index:1045;
  transform:translateX(102%);transition:transform .26s var(--ease);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;box-shadow:var(--sh3);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:15px;font-weight:700;color:var(--brand)}
.drawer-list{display:flex;flex-direction:column;gap:4px;margin-bottom:22px}
.drawer-list a{
  display:flex;align-items:center;min-height:46px;padding:0 12px;border-radius:var(--r-ctl);
  color:var(--text);font-size:15px;border:1px solid transparent;
}
.drawer-list a:hover,.drawer-list a.active{background:var(--brand-soft);color:var(--brand);border-color:#D5E2F0}
.search-overlay{
  position:fixed;inset:0;background:#fff;z-index:1050;padding:22px 20px;
  opacity:0;visibility:hidden;transition:.2s var(--ease);
}
.search-overlay.open{opacity:1;visibility:visible}
.search-overlay .so-row{display:flex;gap:10px;align-items:center}
.search-overlay input{
  flex:1;height:48px;border-radius:999px;border:1px solid var(--line);padding:0 18px;font-size:15px;
}
.search-overlay input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,75,114,.12)}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak)}
.crumb a{color:var(--weak)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C3CBD5}
.crumb .current{color:var(--brand);font-weight:600}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(255,255,255,.72),rgba(245,248,252,.84)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  padding:34px 0 40px;
}
.cat-hero .hero-inner{max-width:760px}
.cat-hero h1{
  font-size:clamp(26px,5.2vw,40px);
  font-weight:700;
  line-height:1.28;
  margin:14px 0 14px;
  color:var(--brand-dark);
}
.cat-hero .hero-lead{
  font-size:16px;line-height:1.9;color:var(--muted);max-width:640px;margin-bottom:22px;
}
.filter-bar{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;-ms-overflow-style:none;scrollbar-width:none}
.filter-bar::-webkit-scrollbar{display:none}
.filter-pill{
  flex:0 0 auto;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--muted);
  font-size:14px;font-weight:500;cursor:pointer;transition:.2s var(--ease);
}
.filter-pill:hover{border-color:var(--brand);color:var(--brand)}
.filter-pill.active{background:var(--brand);border-color:var(--brand);color:#fff}

/* ============ 通用板块 ============ */
.section{padding:56px 0}
.section-tight{padding:40px 0}
@media (min-width:768px){.section{padding:64px 0}.section-tight{padding:48px 0}}
@media (min-width:1200px){.section{padding:88px 0}.section-tight{padding:56px 0}}
.section-head{max-width:680px;margin-bottom:26px}
.section-head h2{font-size:clamp(20px,3vw,28px);font-weight:700;margin-bottom:10px}
.section-head p{font-size:15px;color:var(--muted);line-height:1.85}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand);
  font-weight:600;letter-spacing:.04em;margin-bottom:10px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);border-radius:2px}
.bg-soft{background:var(--bg2)}

/* ============ 数据速览 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media (min-width:992px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 20px;box-shadow:var(--sh1);transition:.22s var(--ease);
}
.stat-card:hover{box-shadow:var(--sh2);transform:translateY(-3px);border-color:#D5E2F0}
.stat-num{font-size:24px;font-weight:700;color:var(--brand);letter-spacing:.01em;line-height:1.3}
.stat-num small{font-size:13px;font-weight:500;color:var(--weak);margin-left:4px}
.stat-label{font-size:14px;font-weight:600;margin-top:6px}
.stat-note{font-size:13px;color:var(--muted);line-height:1.7;margin-top:4px}

/* ============ 专题卡片流 ============ */
.masonry-col{display:flex;flex-direction:column;gap:20px}
.topic-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh1);transition:.22s var(--ease);display:flex;flex-direction:column;
}
.topic-card:hover{box-shadow:var(--sh2);transform:translateY(-3px);border-color:#D5E2F0}
.thumb{position:relative;background:var(--brand-soft);overflow:hidden}
.thumb.ratio-16x9{aspect-ratio:16/9}
.thumb.ratio-4x3{aspect-ratio:4/3}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.topic-card:hover .thumb img{transform:scale(1.03)}
.thumb .tag-float{
  position:absolute;left:14px;top:14px;
  background:rgba(255,255,255,.92);color:var(--brand);
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
.card-body h3{font-size:18px;font-weight:600;line-height:1.45}
.card-body p{font-size:14px;color:var(--muted);line-height:1.8;margin:0}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:auto}
.pill{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
}
.meta-dot{color:#C3CBD5}
.card-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
}
.card-link i{font-size:12px;transition:transform .2s var(--ease)}
.topic-card:hover .card-link i{transform:translateX(3px)}

/* ============ 引述带 ============ */
.quote-band{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--r-card);box-shadow:var(--sh1);
  padding:28px 24px;display:flex;gap:18px;align-items:flex-start;
}
.quote-index{
  flex:0 0 auto;font-size:22px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.quote-band blockquote{margin:0;font-size:17px;line-height:1.85;color:var(--brand-dark);font-weight:600}
.quote-band .quote-sub{margin-top:8px;font-size:13px;color:var(--weak);font-weight:400}

/* ============ 横滑推荐 ============ */
.reco-scroll{
  display:flex;gap:16px;overflow-x:auto;padding-bottom:6px;
  scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none;
}
.reco-scroll::-webkit-scrollbar{display:none}
.reco-card{
  flex:0 0 86%;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1);
  display:flex;transition:.22s var(--ease);
}
.reco-card:hover{box-shadow:var(--sh2);transform:translateY(-3px);border-color:#D5E2F0}
.reco-thumb{flex:0 0 38%;background:var(--brand-soft)}
.reco-thumb img{width:100%;height:100%;object-fit:cover}
.reco-body{padding:18px;display:flex;flex-direction:column;gap:6px}
.reco-body h3{font-size:16px;font-weight:600;line-height:1.45}
.reco-body p{font-size:13px;color:var(--muted);line-height:1.75;margin:0}
@media (min-width:768px){
  .reco-card{flex:0 0 46%}
}
@media (min-width:1200px){
  .reco-card{flex:0 0 32%}
}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px}
.accordion-item{
  border:none;background:#fff;border-radius:var(--r-card);margin-bottom:12px;
  box-shadow:var(--sh1);overflow:hidden;
}
.accordion-button{
  background:#fff;color:var(--text);font-size:16px;font-weight:600;padding:20px 22px;
  border:none;box-shadow:none;gap:12px;
}
.accordion-button:not(.collapsed){color:var(--brand);background:var(--brand-soft)}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--brand);width:auto;height:auto;transform:none;transition:transform .2s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.accordion-body{padding:16px 22px 22px;font-size:15px;line-height:1.85;color:var(--muted);border-left:3px solid var(--brand)}

/* ============ CTA 条 ============ */
.cta-band{
  background:linear-gradient(120deg,#F5F8FC,#E9F0F8);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);
  padding:30px 24px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
}
.cta-band h2{font-size:clamp(19px,2.6vw,24px);margin-bottom:6px}
.cta-band p{font-size:14px;color:var(--muted);margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.share-feedback{font-size:13px;color:var(--accent);min-height:18px}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-dark);color:#CBD8E6;margin-top:64px;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px}}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:#8FA6BF}
.footer-desc{font-size:14px;line-height:1.85;color:#B6C6D8;margin-top:14px}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:14px;font-weight:600}
.footer-links li,.footer-contact li{font-size:14px;line-height:1.9;margin-bottom:6px;color:#B6C6D8}
.footer-links a{color:#B6C6D8}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start}
.footer-contact i{color:#8FA6BF;font-size:13px;margin-top:6px}
.site-footer .btn-brand{background:var(--accent);border-color:var(--accent);color:#fff;margin-top:12px}
.site-footer .btn-brand:hover{background:#B3642F;border-color:#B3642F}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:13px;color:#94A9C0;
}

/* 动效降级 */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .topic-card:hover,.stat-card:hover,.reco-card:hover{transform:none}
  .topic-card:hover .thumb img{transform:none}
}

/* 响应式 */
@media (max-width:991.98px){
  .nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-brand{display:none}
}
@media (max-width:575.98px){
  .brand-name{font-size:15px}
  .cat-hero{padding:26px 0 32px}
  .quote-band{padding:22px 20px}
  .cta-band{padding:24px 20px}
  .cta-actions .btn{flex:1 1 auto}
}

/* roulang page: category4 */
:root{
  --brand:#2A4B72;
  --brand-dark:#1B3350;
  --brand-soft:#E8EFF7;
  --accent:#C9743C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --alt:#EDF1F6;
  --line:#DFE5EC;
  --text:#1A2430;
  --muted:#56616F;
  --weak:#8A94A0;
  --sh1:0 2px 8px rgba(23,42,66,.06);
  --sh2:0 8px 24px rgba(23,42,66,.08);
  --sh3:0 16px 40px rgba(23,42,66,.12);
  --r-card:16px;
  --r-img:12px;
  --r-sm:10px;
  --r-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-y:88px;

  --bs-body-bg:#F5F7FA;
  --bs-body-color:#1A2430;
  --bs-border-color:#DFE5EC;
  --bs-primary:#2A4B72;
  --bs-link-color:#2A4B72;
  --bs-link-hover-color:#1B3350;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-dark)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.02em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}

.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;width:100%}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1440px){.container{max-width:1320px}}

.section{padding:48px 0}
@media (min-width:768px){.section{padding:64px 0}}
@media (min-width:992px){.section{padding:var(--sec-y) 0}}

.section-head{margin-bottom:28px}
.section-head h2{font-size:clamp(20px,3vw,28px);font-weight:650;line-height:1.35}
.section-head p{margin-top:10px;color:var(--muted);font-size:14px}
.head-line{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* ---------- 按钮 ---------- */
.btn{font-size:15px;font-weight:600;border-radius:var(--r-pill);padding:0 24px;height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
@media (min-width:992px){.btn{height:46px}}
.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--brand);border-color:#C9D6E5}
.btn-outline:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark)}
.btn-ghost{background:transparent;color:var(--brand);padding:0;height:auto;font-weight:600}
.btn-ghost i{transition:transform .2s var(--ease)}
.btn-ghost:hover{color:var(--brand-dark)}
.btn-ghost:hover i{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.icon-btn{width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;transition:all .2s var(--ease)}
.icon-btn:hover{background:var(--brand-soft);border-color:var(--brand)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- 标签 ---------- */
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;line-height:1}
.tag-accent{background:rgba(201,116,60,.12);color:#A85C2B}
.meta-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted);line-height:1.6}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--weak)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:-64px;z-index:1030;background:#fff;border-bottom:1px solid var(--line)}
@media (max-width:575.98px){.site-header{top:-56px}}
.nav-top{display:flex;align-items:center;gap:18px;height:64px}
@media (max-width:575.98px){.nav-top{height:56px;gap:12px}}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--brand);color:#fff;font-weight:700;font-size:14px;letter-spacing:.06em;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:700}
.brand-sub{font-size:10px;letter-spacing:.16em;color:var(--weak)}
.nav-search{flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:10px;height:42px;padding:0 16px;background:var(--alt);border:1px solid transparent;border-radius:var(--r-pill);transition:all .2s var(--ease)}
.nav-search i{color:var(--weak);font-size:14px}
.nav-search input{flex:1;border:0;background:transparent;outline:none;font-size:14px}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,75,114,.12)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-actions .icon-btn{display:none}
.nav-actions .btn-brand{display:none}
@media (min-width:992px){.nav-actions .btn-brand{display:inline-flex}}
@media (min-width:992px){.nav-search{display:flex}}
@media (max-width:991.98px){
  .nav-search{display:none}
  .nav-actions .icon-btn{display:inline-flex}
  .nav-toggle{display:inline-flex}
}
@media (min-width:992px){.nav-toggle{display:none !important}}

.nav-channels{background:#fff;border-top:1px solid var(--line)}
.channel-wrap{position:relative}
.channel-scroll{display:flex;gap:8px;overflow-x:auto;scroll-snap-type:x proximity;padding:9px 0;scrollbar-width:none;-ms-overflow-style:none}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-scroll::after{content:"";flex:0 0 24px}
.channel-link{flex:0 0 auto;scroll-snap-align:start;height:30px;padding:0 16px;border-radius:var(--r-pill);font-size:14px;font-weight:600;color:var(--muted);display:inline-flex;align-items:center;transition:all .2s var(--ease)}
.channel-link:hover{background:var(--brand-soft);color:var(--brand)}
.channel-link.active{background:var(--brand);color:#fff}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:var(--weak);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumb a{color:var(--weak)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C4CDD8}
.crumb .current{color:var(--brand);font-weight:600}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;background:linear-gradient(120deg,#F5F8FC 0%,#E9F0F8 100%)}
.page-hero::before{content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-1.png");background-size:cover;background-position:center;opacity:.9}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.86) 0%,rgba(245,247,250,.94) 100%)}
.page-hero .container{position:relative;z-index:2;padding-top:32px;padding-bottom:38px}
@media (min-width:992px){.page-hero .container{padding-top:44px;padding-bottom:56px}}
.hero-inner{max-width:760px;margin-top:20px}
.page-hero h1{font-size:clamp(26px,5.2vw,40px);font-weight:700;line-height:1.28;letter-spacing:.02em}
.hero-lead{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.8;max-width:640px}
.hero-search{margin-top:24px;display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);height:52px;padding:0 8px 0 20px;box-shadow:var(--sh1);max-width:560px;transition:all .2s var(--ease)}
.hero-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,75,114,.12)}
.hero-search i{color:var(--weak)}
.hero-search input{flex:1;border:0;outline:none;font-size:15px;background:transparent}
.hero-search .btn{height:40px;padding:0 20px;font-size:14px}
.hero-tags{margin-top:22px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.hero-tags span.lbl{font-size:13px;color:var(--weak)}

/* ---------- 帮助列表 ---------- */
.list-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);overflow:hidden}
.list-panel-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;background:var(--brand-soft);border-bottom:1px solid var(--line);flex-wrap:wrap}
.list-panel-head h2{font-size:18px;font-weight:650}
.list-panel-head .count{font-size:13px;color:var(--muted)}
.help-row{display:flex;gap:18px;padding:20px 24px;border-bottom:1px solid var(--line);transition:background .2s var(--ease)}
.help-row:last-child{border-bottom:0}
.help-row:hover{background:#F9FBFD}
.help-index{flex:0 0 auto;width:34px;font-size:15px;font-weight:700;color:var(--accent);letter-spacing:.04em;line-height:1.7}
.help-body{min-width:0;flex:1}
.help-body h3{font-size:17px;font-weight:600;line-height:1.5}
.help-body h3 a{color:var(--text)}
.help-body h3 a:hover{color:var(--brand)}
.help-body .desc{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.help-body .meta-row{margin-top:10px}

/* ---------- 分页 ---------- */
.pager{display:flex;gap:8px;align-items:center;justify-content:center;margin-top:28px;flex-wrap:wrap}
.pager a,.pager span{min-width:42px;height:42px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;font-size:14px;font-weight:600;color:var(--muted);transition:all .2s var(--ease)}
.pager a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.pager .active{background:var(--brand);border-color:var(--brand);color:#fff}
.pager .gap{border:0;background:transparent;color:var(--weak)}

/* ---------- 侧栏 ---------- */
.sidebar{display:flex;flex-direction:column;gap:20px}
@media (min-width:992px){.sidebar{position:sticky;top:84px}}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:22px}
.side-card h4{font-size:15px;font-weight:650;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h4::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent)}
.pill-wrap{display:flex;flex-wrap:wrap;gap:8px}
.pill{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);background:var(--alt);color:var(--muted);font-size:13px;font-weight:600;transition:all .2s var(--ease)}
.pill:hover{background:var(--brand-soft);color:var(--brand)}
.mini-list li{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px;line-height:1.6}
.mini-list li:last-child{border-bottom:0}
.mini-list time{flex:0 0 auto;font-size:12px;color:var(--weak);padding-top:2px}
.mini-list a{color:var(--text)}
.mini-list a:hover{color:var(--brand)}
.side-cta{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}
.side-cta h4{color:#fff}
.side-cta h4::before{background:var(--accent)}
.side-cta p{font-size:14px;color:rgba(255,255,255,.76);margin-bottom:16px}
.side-cta .btn{width:100%;background:#fff;color:var(--brand-dark);border-color:#fff}
.side-cta .btn:hover{background:var(--brand-soft);border-color:var(--brand-soft)}

/* ---------- 深色方式带 ---------- */
.dark-band{position:relative;overflow:hidden;background:var(--brand-dark);color:#fff;padding:48px 0}
@media (min-width:992px){.dark-band{padding:76px 0}}
.dark-band::before{content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-3.webp");background-size:cover;background-position:center;opacity:.22}
.dark-band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(27,51,80,.96) 0%,rgba(27,51,80,.8) 100%)}
.dark-band .container{position:relative;z-index:2}
.dark-band h2{color:#fff;font-size:clamp(20px,3vw,28px);font-weight:650}
.dark-band .lead{margin-top:12px;color:rgba(255,255,255,.72);font-size:14px;max-width:660px}
.way-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:32px}
@media (min-width:768px){.way-grid{grid-template-columns:repeat(3,1fr);gap:22px}}
.way-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:24px;transition:all .2s var(--ease)}
.way-card:hover{background:rgba(255,255,255,.1);transform:translateY(-3px)}
.way-num{font-size:26px;font-weight:700;color:var(--accent);letter-spacing:.06em;line-height:1}
.way-card h3{color:#fff;font-size:17px;font-weight:600;margin-top:14px}
.way-card p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.74);line-height:1.8}
.way-card .btn{margin-top:16px;background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.way-card .btn:hover{background:#fff;color:var(--brand-dark);border-color:#fff}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card) !important;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1)}
.accordion-button{font-size:16px;font-weight:600;color:var(--text);background:#fff;padding:20px 22px;border:0;box-shadow:none;gap:12px}
.accordion-button::after{background-image:none;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px;color:var(--brand);display:flex;align-items:center;justify-content:center;width:26px;height:26px;background:var(--brand-soft);border-radius:50%;transition:transform .2s var(--ease)}
.accordion-button:not(.collapsed){color:var(--brand);background:#F9FBFD;box-shadow:inset 3px 0 0 var(--brand)}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.accordion-body{padding:0 22px 22px;font-size:15px;color:var(--muted);line-height:1.8;border-left:3px solid var(--brand)}

/* ---------- 推荐卡 / CTA ---------- */
.rec-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.rec-grid{grid-template-columns:repeat(2,1fr)}}
.rec-card{display:flex;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);overflow:hidden;transition:all .2s var(--ease)}
.rec-card:hover{box-shadow:var(--sh2);border-color:var(--brand-soft);transform:translateY(-3px)}
.rec-thumb{flex:0 0 40%;max-width:200px;overflow:hidden;background:var(--brand-soft)}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s var(--ease)}
.rec-card:hover .rec-thumb img{transform:scale(1.03)}
.rec-text{padding:20px;display:flex;flex-direction:column;gap:8px;min-width:0}
.rec-text h3{font-size:17px;font-weight:600}
.rec-text p{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-text .btn-ghost{margin-top:auto;font-size:14px}

.cta-band{background:var(--alt);border-radius:var(--r-card);padding:28px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;border:1px solid var(--line)}
.cta-band h3{font-size:18px;font-weight:650}
.cta-band p{margin-top:8px;font-size:14px;color:var(--muted)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);margin-top:64px;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:576px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand .brand{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.5)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66)}
.site-footer h4{color:#fff;font-size:15px;font-weight:650;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a,.footer-contact a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover,.footer-contact a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;font-size:14px}
.footer-contact i{color:var(--accent);margin-top:5px}
.footer-contact .btn{margin-top:8px}
.footer-bottom{margin-top:44px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.52)}

/* ---------- 抽屉 / 搜索浮层 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(26,36,48,.45);opacity:0;visibility:hidden;transition:all .25s var(--ease);z-index:1040}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);background:#fff;z-index:1050;transform:translateX(102%);transition:transform .28s var(--ease);display:flex;flex-direction:column;padding:22px}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-list a{display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:var(--r-sm);font-size:15px;font-weight:600;color:var(--muted)}
.drawer-list a:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-list a.active{background:var(--brand);color:#fff}
.drawer .btn{margin-top:22px;width:100%}
body.no-scroll{overflow:hidden}

.search-layer{position:fixed;inset:0;background:rgba(255,255,255,.98);z-index:1060;display:none;padding:24px 0}
.search-layer.open{display:block}
.search-layer .inner{max-width:640px;margin:60px auto 0;padding:0 20px}
.search-layer .box{display:flex;align-items:center;gap:12px;height:52px;border:1px solid var(--brand);border-radius:var(--r-pill);padding:0 20px;box-shadow:0 0 0 4px rgba(42,75,114,.1)}
.search-layer .box input{flex:1;border:0;outline:none}
.search-layer .hint{margin-top:18px;font-size:14px;color:var(--muted)}
.search-layer .close{margin-top:24px}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .rec-card:hover,.way-card:hover,.btn:hover{transform:none !important}
}

/* roulang page: category5 */
:root{
  --brand:#2A4B72;
  --brand-dark:#1B3350;
  --brand-mid:#3A6390;
  --brand-soft:#E8EFF7;
  --accent:#C9743C;
  --accent-on-dark:#E39A66;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --panel:#EDF1F6;
  --line:#DFE5EC;
  --text:#1A2430;
  --muted:#56616F;
  --faint:#8A94A0;
  --r-card:16px;
  --r-img:12px;
  --r-sm:10px;
  --sh1:0 2px 8px rgba(23,42,66,.06);
  --sh2:0 8px 24px rgba(23,42,66,.08);
  --sh3:0 16px 40px rgba(23,42,66,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-y:80px;
  --bs-primary:#2A4B72;
  --bs-primary-rgb:42,75,114;
  --bs-body-color:#1A2430;
  --bs-body-bg:#F5F7FA;
  --bs-border-color:#DFE5EC;
  --bs-link-color:#2A4B72;
  --bs-link-hover-color:#1B3350;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container,
.container-lg,
.container-md,
.container-sm{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:20px;
  --bs-gutter-x:0;
}
@media (min-width:1200px){
  .container,.container-lg,.container-md,.container-sm{max-width:1200px;padding-inline:24px;}
}
@media (min-width:1440px){
  .container,.container-lg,.container-md,.container-sm{max-width:1320px;}
}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px;}
/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border-radius:999px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-brand{background:var(--brand);color:#fff !important;border-color:var(--brand);}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh2);color:#fff;}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  background:none;border:0;padding:6px 0;
}
.btn-link-arrow i{transition:transform .2s var(--ease);}
.btn-link-arrow:hover i{transform:translateX(4px);}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand);
  font-size:15px;
  cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{background:var(--brand-soft);border-color:var(--brand);}
.pill{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;line-height:1.5;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--accent);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.section{padding:var(--sec-y) 0;}
.section-tight{padding:40px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-title{font-size:clamp(20px,3vw,28px);font-weight:650;line-height:1.35;letter-spacing:.01em;}
.section-sub{margin-top:12px;font-size:15px;line-height:1.85;color:var(--muted);}
.card-soft{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.card-soft:hover{box-shadow:var(--sh2);border-color:var(--brand-soft);transform:translateY(-3px);}
.media-16x9{aspect-ratio:16/9;overflow:hidden;border-radius:var(--r-img);background:var(--brand-soft);}
.media-4x3{aspect-ratio:4/3;overflow:hidden;border-radius:var(--r-img);background:var(--brand-soft);}
.media-16x9 img,.media-4x3 img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.card-soft:hover .media-16x9 img,
.card-soft:hover .media-4x3 img{transform:scale(1.03);}
/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  box-shadow:0 1px 0 var(--line);
}
.nav-top{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-size:15px;font-weight:700;letter-spacing:.04em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-sub{font-size:10px;letter-spacing:.14em;color:var(--faint);font-weight:600;}
.nav-search{position:relative;display:flex;align-items:center;flex:1 1 auto;max-width:360px;margin-left:auto;}
.nav-search i{position:absolute;left:15px;font-size:14px;color:var(--faint);pointer-events:none;}
.nav-search input{
  width:100%;height:42px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--panel);
  padding:0 18px 0 40px;
  font-size:14px;color:var(--text);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--faint);}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,75,114,.12);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{display:none;}
.nav-channels{background:#fff;border-top:1px solid var(--line);}
.channel-wrap{position:relative;}
.channel-wrap::after{
  content:"";position:absolute;top:0;right:0;width:28px;height:100%;
  background:linear-gradient(90deg,rgba(255,255,255,0),#fff);
  pointer-events:none;
}
.channel-scroll{
  display:flex;gap:8px;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  padding:9px 0;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-link{
  flex:0 0 auto;
  scroll-snap-align:start;
  padding:8px 16px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.channel-link:hover{background:var(--brand-soft);color:var(--brand);}
.channel-link.active{background:var(--brand);color:#fff;font-weight:600;}
/* ---------- 移动抽屉与搜索浮层 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:1040;
  background:rgba(20,31,45,.42);
  opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:1050;
  width:min(320px,86vw);
  background:#fff;
  transform:translateX(102%);
  transition:transform .26s var(--ease);
  box-shadow:var(--sh3);
  padding:20px;
  overflow-y:auto;
}
.drawer.open{transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-title{font-size:15px;font-weight:700;}
.drawer-list{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-list a{
  display:block;padding:12px 14px;border-radius:var(--r-sm);
  font-size:15px;color:var(--text);
}
.drawer-list a:hover,.drawer-list a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;}
.search-overlay{
  position:fixed;left:0;right:0;top:0;z-index:1060;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:var(--sh2);
  transform:translateY(-105%);
  transition:transform .24s var(--ease);
  padding:14px 20px;
}
.search-overlay.open{transform:none;}
.search-overlay-inner{display:flex;align-items:center;gap:12px;max-width:640px;margin:0 auto;position:relative;}
.search-overlay-inner i{position:absolute;left:15px;color:var(--faint);}
.search-overlay-inner input{
  flex:1;height:44px;border-radius:999px;
  border:1px solid var(--line);background:var(--panel);
  padding:0 16px 0 40px;font-size:15px;
}
.search-overlay-inner input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,75,114,.12);}
/* ---------- 页面顶部 ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(255,255,255,.80),rgba(255,255,255,.88)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  padding:44px 0 40px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint);margin-bottom:22px;padding:0;background:none;}
.breadcrumb a{color:var(--faint);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--brand);font-weight:600;}
.page-hero h1{
  font-size:clamp(26px,5.2vw,40px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:.02em;
  max-width:820px;
}
.hero-lead{
  margin-top:18px;
  max-width:640px;
  font-size:16px;
  line-height:1.9;
  color:var(--muted);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
/* ---------- 数据条 ---------- */
.stat-bar{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
  margin-top:34px;
}
.stat-item{
  background:rgba(255,255,255,.86);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:16px 18px;
}
.stat-value{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:.01em;}
.stat-label{margin-top:4px;font-size:13px;color:var(--muted);}
/* ---------- 品牌说明 ---------- */
.brand-copy{font-size:15px;line-height:1.9;color:var(--muted);}
.brand-copy + .brand-copy{margin-top:14px;}
.point-list{display:flex;flex-direction:column;gap:14px;margin-top:24px;}
.point-item{display:flex;gap:14px;align-items:flex-start;}
.point-icon{
  flex:0 0 auto;width:38px;height:38px;border-radius:var(--r-sm);
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:15px;
}
.point-title{font-size:16px;font-weight:600;line-height:1.5;}
.point-desc{margin-top:4px;font-size:14px;line-height:1.8;color:var(--muted);}
.brand-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh2);background:var(--brand-soft);}
.brand-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
/* ---------- 深色节奏区 ---------- */
.flow-band{background:var(--brand-dark);color:#fff;padding:64px 0;}
.flow-band .section-title{color:#fff;}
.flow-band .section-sub{color:rgba(255,255,255,.72);}
.flow-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:8px;}
.flow-item{
  padding:24px;
  border-radius:var(--r-card);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.flow-item:hover{background:rgba(255,255,255,.1);transform:translateY(-3px);}
.flow-num{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--accent-on-dark);}
.flow-title{margin-top:12px;font-size:18px;font-weight:600;}
.flow-desc{margin-top:8px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.76);}
/* ---------- 表单与联系卡 ---------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:26px;}
.form-label{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px;}
.form-control,.form-select{
  height:46px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#fff;
  font-size:15px;
  color:var(--text);
  padding:0 14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
textarea.form-control{height:auto;min-height:120px;padding:12px 14px;line-height:1.8;resize:vertical;}
.form-control::placeholder{color:var(--faint);}
.form-control:focus,.form-select:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(42,75,114,.14);
}
.form-check-input{width:18px;height:18px;margin-top:4px;border-color:var(--line);}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand);}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(42,75,114,.14);border-color:var(--brand);}
.form-check-label{font-size:14px;color:var(--muted);line-height:1.7;}
.form-alert{
  display:flex;align-items:flex-start;gap:10px;
  border-radius:var(--r-sm);
  padding:12px 16px;
  font-size:14px;
  line-height:1.7;
  margin-bottom:18px;
}
.form-alert.ok{background:var(--brand-soft);color:var(--brand-dark);border:1px solid rgba(42,75,114,.18);}
.form-alert.warn{background:#FBF1E9;color:var(--accent);border:1px solid rgba(201,116,60,.28);}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:26px;height:100%;}
.contact-list{display:flex;flex-direction:column;gap:16px;margin-top:18px;}
.contact-row{display:flex;gap:12px;align-items:flex-start;}
.contact-row i{color:var(--brand);font-size:15px;margin-top:5px;width:18px;text-align:center;}
.contact-row .k{font-size:13px;color:var(--faint);}
.contact-row .v{font-size:15px;color:var(--text);}
.qr-slot{
  margin-top:22px;padding-top:20px;border-top:1px dashed var(--line);
  display:flex;align-items:center;gap:14px;
}
.qr-box{
  width:84px;height:84px;border-radius:var(--r-sm);
  border:1px dashed var(--line);background:var(--panel);
  display:grid;place-items:center;color:var(--faint);font-size:22px;flex:0 0 auto;
}
.qr-text{font-size:13px;line-height:1.7;color:var(--muted);}
/* ---------- 地图占位 ---------- */
.map-placeholder{
  border-radius:var(--r-card);
  border:1px dashed var(--line);
  background-color:var(--panel);
  background-image:repeating-linear-gradient(0deg,rgba(42,75,114,.06) 0 1px,transparent 1px 34px),
                   repeating-linear-gradient(90deg,rgba(42,75,114,.06) 0 1px,transparent 1px 34px);
  min-height:220px;
  display:grid;place-items:center;
  text-align:center;
  padding:28px;
}
.map-placeholder i{font-size:26px;color:var(--brand);}
.map-title{margin-top:12px;font-size:16px;font-weight:600;}
.map-desc{margin-top:6px;font-size:13px;color:var(--muted);}
/* ---------- 推荐卡 ---------- */
.rec-card{display:flex;gap:0;overflow:hidden;height:100%;}
.rec-card .rec-media{flex:0 0 40%;background:var(--brand-soft);}
.rec-card .rec-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.rec-card:hover .rec-media img{transform:scale(1.03);}
.rec-body{flex:1 1 auto;padding:22px;}
.rec-title{font-size:17px;font-weight:600;line-height:1.5;}
.rec-desc{margin-top:8px;font-size:14px;line-height:1.8;color:var(--muted);}
.rec-meta{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--faint);}
/* ---------- FAQ ---------- */
.faq .accordion-item{
  border:0;border-radius:14px;background:var(--panel);
  margin-bottom:12px;overflow:hidden;
}
.faq .accordion-button{
  background:var(--panel);
  color:var(--text);
  font-size:16px;font-weight:600;
  padding:18px 20px;
  border-radius:14px;
  box-shadow:none;
}
.faq .accordion-button:not(.collapsed){
  background:#fff;color:var(--brand);
  box-shadow:inset 3px 0 0 var(--brand);
  border-radius:14px 14px 0 0;
}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq .accordion-button:not(.collapsed):focus{box-shadow:inset 3px 0 0 var(--brand);}
.faq .accordion-button::after{
  width:14px;height:14px;background-size:14px;
  filter:invert(28%) sepia(19%) saturate(1084%) hue-rotate(174deg) brightness(92%) contrast(88%);
}
.faq .accordion-body{
  background:#fff;
  padding:0 20px 20px 23px;
  font-size:15px;line-height:1.85;color:var(--muted);
}
/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand-soft);
  border:1px solid var(--line);
  border-radius:20px;
  padding:30px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.cta-title{font-size:20px;font-weight:650;line-height:1.4;}
.cta-desc{margin-top:8px;font-size:14px;line-height:1.8;color:var(--muted);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);padding:56px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:rgba(255,255,255,.5);}
.site-footer .brand-mark{background:rgba(255,255,255,.14);}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);max-width:340px;}
.site-footer h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;margin-bottom:18px;}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.72);}
.footer-contact i{margin-top:5px;color:rgba(255,255,255,.85);}
.site-footer .btn-brand{background:#fff;color:var(--brand-dark) !important;border-color:#fff;}
.site-footer .btn-brand:hover{background:var(--brand-soft);border-color:var(--brand-soft);color:var(--brand-dark) !important;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.58);
}
/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  :root{--sec-y:64px;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .rec-card{flex-direction:column;}
  .rec-card .rec-media{flex:0 0 auto;aspect-ratio:16/9;}
  .rec-card .rec-media img{height:100%;}
}
@media (max-width:767.98px){
  .nav-top{height:56px;gap:12px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:14px;}
  .brand-name{font-size:15px;}
  .brand-sub{font-size:9px;}
  .nav-actions .btn-brand{display:none;}
  .channel-scroll{padding:8px 0;}
  .page-hero{padding:32px 0 30px;}
  .hero-actions .btn{flex:1 1 auto;}
  .flow-band{padding:48px 0;}
  .form-card,.contact-card{padding:20px;}
  .cta-band{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:575.98px){
  :root{--sec-y:48px;}
  .stat-bar{grid-template-columns:1fr 1fr;gap:12px;}
  .stat-item{padding:14px;}
  .stat-value{font-size:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .card-soft:hover,.btn:hover,.flow-item:hover{transform:none;}
}