/* roulang page: index */
:root{
  --brand:#1C5DA8;
  --brand-2:#2E7BD6;
  --brand-soft:#EAF2FC;
  --accent:#F0803C;
  --accent-dark:#D9691F;
  --c-green:#2FA37C;
  --c-purple:#7A6BF0;
  --bg:#F7FAFD;
  --card:#FFFFFF;
  --line:#E3EBF3;
  --input-line:#D7E2EE;
  --text:#1B2733;
  --text-2:#5A6B7C;
  --text-3:#8A98A8;
  --r-hero:20px;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(18,48,86,.06);
  --sh-md:0 6px 18px rgba(18,48,86,.08);
  --sh-lg:0 18px 40px rgba(18,48,86,.12);
  --ease:.22s cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
  --bs-primary:#1C5DA8;
  --bs-body-color:#1B2733;
  --bs-body-bg:#F7FAFD;
  --bs-border-radius:12px;
  --bs-border-color:#E3EBF3;
  --bs-link-color:#1C5DA8;
  --bs-link-hover-color:#2E7BD6;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;line-height:1.35;font-weight:700;color:var(--text)}
p{margin:0 0 16px}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-2)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.btn-primary{
  --bs-btn-bg:var(--brand);--bs-btn-border-color:var(--brand);
  --bs-btn-hover-bg:var(--brand-2);--bs-btn-hover-border-color:var(--brand-2);
  --bs-btn-active-bg:var(--brand);--bs-btn-active-border-color:var(--brand);
  --bs-btn-color:#fff;--bs-btn-hover-color:#fff;--bs-btn-active-color:#fff;
  --bs-btn-border-radius:10px;--bs-btn-padding-y:.6rem;--bs-btn-padding-x:1.25rem;
}
.wrap{max-width:1360px;margin:0 auto;padding:0 32px}

/* ============ App Shell ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);background:#fff;
  border-right:1px solid var(--line);display:flex;flex-direction:column;
  padding:0 16px 0;z-index:1040;transition:transform var(--ease);
}
.brand{height:72px;display:flex;flex-direction:column;justify-content:center;gap:2px;flex:0 0 auto}
.brand__main{font-size:18px;font-weight:800;color:var(--brand);line-height:1.2;letter-spacing:-.01em}
.brand__sub{font-size:11px;color:var(--text-3);letter-spacing:.08em}
.side-nav{margin-top:10px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;flex:1 1 auto;padding-bottom:12px}
.side-link{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;font-weight:500;position:relative;transition:all var(--ease);
}
.side-link i{width:18px;font-size:15px;color:var(--text-3);text-align:center;transition:color var(--ease)}
.side-link:hover{background:#F2F7FD;color:var(--brand)}
.side-link:hover i{color:var(--brand)}
.side-link.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.side-link.active i{color:var(--brand)}
.side-link.active::before{
  content:'';position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--brand);
}
.side-group__head{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;font-weight:500;cursor:pointer;user-select:none;
  background:none;border:0;width:100%;text-align:left;transition:background var(--ease),color var(--ease);
}
.side-group__head i.ico{width:18px;font-size:15px;color:var(--text-3);text-align:center}
.side-group__head:hover{background:#F2F7FD;color:var(--brand)}
.side-group__head .arrow{margin-left:auto;font-size:12px;color:var(--text-3);transition:transform var(--ease)}
.side-group.open .side-group__head .arrow{transform:rotate(180deg)}
.side-sub{display:none;flex-direction:column;gap:2px;margin:2px 0 6px;padding-left:14px}
.side-group.open .side-sub{display:flex}
.side-sub .side-link{height:40px;font-size:14px}
.side-foot{
  margin:auto 0 0;padding:16px 6px 20px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-3);line-height:1.7;flex:0 0 auto;
}
.side-foot a{font-size:12px}

.mobile-topbar{
  display:none;position:sticky;top:0;z-index:1030;height:56px;background:#fff;
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 16px;transition:box-shadow var(--ease);
}
.mobile-topbar.scrolled{box-shadow:var(--sh-sm)}
.mobile-topbar .brand{height:auto}
.mobile-topbar .brand__main{font-size:16px}
.burger{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--brand);font-size:17px;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all var(--ease);
}
.burger:hover{background:var(--brand-soft)}
.sidebar-mask{
  position:fixed;inset:0;background:rgba(18,48,86,.45);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);z-index:1035;
}
.sidebar-mask.show{opacity:1;visibility:visible}
body.lock{overflow:hidden}

.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.sec{margin-top:80px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.sec-title{position:relative;padding-left:14px;font-size:28px;font-weight:700}
.sec-title::before{
  content:'';position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand);
}
.sec-desc{font-size:14px;color:var(--text-2);margin-top:6px;padding-left:14px}
.sec-tools{display:flex;align-items:center;gap:10px}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-more i{font-size:12px;transition:transform var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ============ 按钮 ============ */
.btn-brand,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all var(--ease);white-space:nowrap;
}
.btn-brand{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(240,128,60,.26)}
.btn-brand:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand)}
.btn-line{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.55);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.16);color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn:disabled,.btn-brand:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ============ 徽章 ============ */
.badge-x{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.b-blue{background:var(--brand-soft);color:var(--brand)}
.b-green{background:#E7F6F0;color:var(--c-green)}
.b-purple{background:#EFEDFE;color:var(--c-purple)}
.b-orange{background:#FDEBE0;color:var(--accent-dark)}

/* ============ Hero ============ */
.hero{
  position:relative;margin-top:28px;border-radius:var(--r-hero);overflow:hidden;
  min-height:490px;display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
}
.hero::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,28,52,.92) 0%,rgba(10,28,52,.72) 42%,rgba(10,28,52,.16) 100%);
}
.hero .wrap{position:relative;z-index:2;width:100%;padding-top:56px;padding-bottom:56px}
.hero-inner{max-width:680px;color:#fff}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:#FFE3CF;letter-spacing:.04em;margin-bottom:16px;
}
.hero h1{
  font-size:52px;font-weight:800;line-height:1.18;letter-spacing:-.01em;color:#fff;
}
.hero-lead{font-size:17px;line-height:1.8;color:rgba(255,255,255,.86);margin:18px 0 26px;max-width:560px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.24);color:#fff;font-size:12.5px;
}
.hero-tag i{font-size:11px;color:#FFD9BC}

/* ============ 横滑轨道 ============ */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 2px 18px;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-item{flex:0 0 282px;scroll-snap-align:start}
.rail-btn{
  width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh-sm);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all var(--ease);
}
.rail-btn:hover{background:var(--brand-soft)}
.rail-btn:disabled{opacity:.35;cursor:not-allowed}

.card-soft{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;transition:box-shadow var(--ease),transform var(--ease);
  height:100%;display:flex;flex-direction:column;
}
.card-soft:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);flex:0 0 auto}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.card-soft:hover .thumb img{transform:scale(1.03)}
.thumb-badge{position:absolute;left:12px;top:12px;box-shadow:var(--sh-sm)}
.card-body-x{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
.card-title{font-size:16.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a{color:var(--text)}
.card-soft:hover .card-title a{color:var(--brand)}
.card-meta{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:6px}

/* ============ 编辑推荐 ============ */
.feature-main .thumb{aspect-ratio:16/9}
.feature-main .card-body-x{padding:22px 24px 24px}
.feature-main .card-title{font-size:22px;-webkit-line-clamp:2}
.mini-list{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:4px 20px;height:100%}
.mini-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);transition:transform var(--ease)}
.mini-item:last-child{border-bottom:0}
.mini-item:hover{transform:translateX(3px)}
.mini-item img{width:128px;height:84px;object-fit:cover;border-radius:var(--r-img);flex:0 0 128px}
.mini-item h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-item h3 a{color:var(--text)}
.mini-item:hover h3 a{color:var(--brand)}
.mini-item p{font-size:13px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{
  display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--sh-sm);transition:box-shadow var(--ease),transform var(--ease);
}
.news-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.news-card img{width:150px;height:108px;object-fit:cover;border-radius:var(--r-img);flex:0 0 150px}
.news-card__body{display:flex;flex-direction:column;gap:8px;min-width:0}
.news-card h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card h3 a{color:var(--text)}
.news-card:hover h3 a{color:var(--brand)}
.news-card p{font-size:13.5px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);margin-top:auto}
.news-card__meta a{font-weight:600;font-size:13.5px}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 20px;background:#fff;border:1px dashed var(--line);
  border-radius:var(--r-card);
}
.empty-state i{font-size:40px;color:var(--brand-soft);margin-bottom:14px;display:block}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:18px}

/* ============ 分类分区 ============ */
.cat-grid{
  display:grid;grid-template-columns:1.15fr 1fr;grid-template-rows:repeat(2,1fr);
  gap:20px;min-height:440px;
}
.cat-tile{
  position:relative;border-radius:var(--r-card);overflow:hidden;display:flex;
  align-items:flex-end;padding:24px;color:#fff;min-height:210px;
  background-size:cover;background-position:center;transition:transform var(--ease),box-shadow var(--ease);
}
.cat-tile:first-child{grid-row:span 2}
.cat-tile::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,28,52,.12) 0%,rgba(10,28,52,.82) 100%);
  transition:opacity var(--ease);
}
.cat-tile:hover{transform:translateY(-3px);box-shadow:var(--sh-lg)}
.cat-tile__body{position:relative;z-index:2}
.cat-tile__body h3{color:#fff;font-size:21px;font-weight:700;margin-bottom:6px}
.cat-tile:first-child .cat-tile__body h3{font-size:26px}
.cat-tile__body p{color:rgba(255,255,255,.82);font-size:13.5px;margin:0 0 12px}
.cat-tile__link{color:#fff;font-size:13.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.cat-tile__link i{font-size:12px;transition:transform var(--ease)}
.cat-tile:hover .cat-tile__link i{transform:translateX(4px)}

/* ============ 数据条 ============ */
.stats{
  display:flex;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:30px 12px;
}
.stat{flex:1 1 0;text-align:center;position:relative;padding:0 12px}
.stat + .stat::before{
  content:'';position:absolute;left:0;top:14%;bottom:14%;width:1px;background:var(--line);
}
.stat b{display:block;font-size:34px;font-weight:800;color:var(--brand);line-height:1.25}
.stat b em{font-style:normal;font-size:18px;font-weight:700;margin-left:2px}
.stat span{font-size:13.5px;color:var(--text-2)}

/* ============ FAQ ============ */
.faq{max-width:800px}
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0}
.faq .accordion-item:first-child{border-top:1px solid var(--line)}
.faq .accordion-button{
  background:transparent;box-shadow:none;color:var(--text);font-size:17px;font-weight:600;
  padding:18px 0;min-height:56px;border-radius:0;
}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:2px}
.faq .accordion-button::after{display:none}
.faq .faq-sign{
  margin-left:auto;font-size:20px;font-weight:400;color:var(--brand);line-height:1;
  transition:transform var(--ease);display:inline-block;width:20px;text-align:center;
}
.faq .accordion-button:not(.collapsed) .faq-sign{transform:rotate(45deg)}
.faq .accordion-body{padding:0 0 22px;font-size:15px;color:var(--text-2);line-height:1.85;max-width:720px}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-soft);border-radius:var(--r-hero);padding:48px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
}
.cta-band h2{font-size:30px;line-height:1.3;margin-bottom:12px}
.cta-band p{font-size:15px;color:var(--text-2);margin-bottom:0;max-width:520px}
.cta-form{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.cta-form input{
  flex:1 1 240px;height:44px;border-radius:var(--r-btn);border:1px solid var(--input-line);
  padding:0 16px;font-size:15px;color:var(--text);background:#fff;font-family:inherit;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.cta-form input::placeholder{color:var(--text-3)}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(46,123,214,.18)}
.cta-form input.is-error{border-color:#D0453B}
.cta-hint{font-size:13px;color:var(--text-3);margin-top:12px}
.cta-hint.err{color:#D0453B}
.cta-band img{border-radius:var(--r-img);width:100%;aspect-ratio:16/10;object-fit:cover}

/* ============ 页脚 ============ */
.site-footer{margin-top:88px;background:#10263F;color:rgba(255,255,255,.68);padding-top:56px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.site-footer p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);margin:0}
.site-footer a{color:rgba(255,255,255,.68);font-size:14px;display:inline-block;padding:5px 0;transition:color var(--ease)}
.site-footer a:hover{color:#fff}
.foot-brand{display:flex;flex-direction:column;gap:12px}
.foot-brand .brand__main{color:#fff;font-size:17px}
.foot-brand .brand__sub{color:rgba(255,255,255,.5)}
.foot-list{display:flex;flex-direction:column}
.foot-bottom{
  margin-top:40px;border-top:1px solid rgba(255,255,255,.12);padding:18px 0 22px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1439.98px){
  .wrap{padding:0 32px}
}
@media (max-width:1199.98px){
  .hero h1{font-size:44px}
  .rail-item{flex:0 0 262px}
  .news-grid{grid-template-columns:1fr}
  .stat b{font-size:30px}
}
@media (max-width:991.98px){
  .sidebar{transform:translateX(-100%);box-shadow:none}
  .sidebar.open{transform:translateX(0);box-shadow:var(--sh-lg)}
  .mobile-topbar{display:flex}
  .main{margin-left:0}
  .hero{min-height:360px;margin-top:16px;border-radius:16px}
  .hero .wrap{padding-top:40px;padding-bottom:40px}
  .sec{margin-top:64px}
  .cat-grid{grid-template-columns:1fr;grid-template-rows:auto;min-height:0}
  .cat-tile:first-child{grid-row:auto;min-height:240px}
  .cta-band{grid-template-columns:1fr;padding:32px;gap:24px}
  .cta-band .cta-media{order:2}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .mini-item img{width:110px;height:76px;flex:0 0 110px}
  .stats{flex-wrap:wrap;padding:24px 8px;gap:22px 0}
  .stat{flex:1 1 46%}
  .stat:nth-child(3)::before{display:none}
}
@media (max-width:767.98px){
  .hero h1{font-size:36px}
  .hero-lead{font-size:15.5px}
  .sec-title{font-size:24px}
  .sec-desc{padding-left:0}
  .rail-item{flex:0 0 240px}
  .news-card{flex-direction:column}
  .news-card img{width:100%;height:180px;flex:none}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px}
  .hero{min-height:320px}
  .hero h1{font-size:30px}
  .hero-cta{gap:10px}
  .hero-cta .btn-brand,.hero-cta .btn-line{flex:1 1 100%}
  .sec{margin-top:48px}
  .sec-title{font-size:22px}
  .sec-head{align-items:flex-start}
  .cta-band{padding:24px 20px}
  .cta-band h2{font-size:23px}
  .stat{flex:1 1 100%;border-top:1px solid var(--line);padding-top:18px}
  .stat:first-child{border-top:0;padding-top:0}
  .stat + .stat::before{display:none}
  .foot-grid{grid-template-columns:1fr}
  .site-footer{padding-top:40px}
  .mini-item img{width:96px;height:68px;flex:0 0 96px}
  .mini-list{padding:4px 16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --brand:#1C5DA8;
  --brand-2:#2E7BD6;
  --brand-soft:#EAF2FC;
  --brand-hover:#F2F7FD;
  --accent:#F0803C;
  --accent-dark:#D9691F;
  --mint:#2FA37C;
  --mint-soft:#E7F6F0;
  --violet:#7A6BF0;
  --violet-soft:#EFEDFE;
  --bg:#F7FAFD;
  --card:#FFFFFF;
  --line:#E3EBF3;
  --input-line:#D7E2EE;
  --text:#1B2733;
  --text-2:#5A6B7C;
  --text-3:#8A98A8;
  --danger:#D0453B;
  --warn:#E2A03F;
  --r-hero:20px;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(18,48,86,.06);
  --sh-md:0 6px 18px rgba(18,48,86,.08);
  --sh-lg:0 18px 40px rgba(18,48,86,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
  --bs-primary:#1C5DA8;
  --bs-body-color:#1B2733;
  --bs-body-bg:#F7FAFD;
  --bs-border-color:#E3EBF3;
  --bs-border-radius:12px;
  --bs-link-color:#1C5DA8;
  --bs-link-hover-color:#2E7BD6;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand-2);}
button,input{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--text);font-weight:700;line-height:1.3;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:var(--brand-soft);color:var(--brand);}

.wrap{max-width:1360px;margin:0 auto;padding:0 32px;width:100%;}

/* ---------- 左侧 App Shell ---------- */
.app-shell{display:flex;min-height:100vh;}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;
}
.brand{
  height:72px;display:flex;flex-direction:column;justify-content:center;
  padding:0 20px;border-bottom:1px solid var(--line);gap:2px;
}
.brand__main{font-size:18px;font-weight:800;color:var(--brand);letter-spacing:-.01em;line-height:1.2;}
.brand__sub{font-size:11px;color:var(--text-3);letter-spacing:.02em;}
.side-nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;}
.side-link{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;
  border-radius:var(--r-btn);color:var(--text-2);font-size:15px;font-weight:500;
  position:relative;transition:background .22s var(--ease),color .22s var(--ease);
}
.side-link i{width:18px;font-size:15px;text-align:center;color:var(--text-3);transition:color .22s var(--ease);}
.side-link:hover{background:var(--brand-hover);color:var(--brand);}
.side-link:hover i{color:var(--brand-2);}
.side-link.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.side-link.active i{color:var(--brand);}
.side-link.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.side-group__head{
  display:flex;align-items:center;gap:10px;width:100%;height:44px;padding:0 14px;
  background:transparent;border:0;border-radius:var(--r-btn);color:var(--text-2);
  font-size:15px;font-weight:500;cursor:pointer;text-align:left;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.side-group__head .ico{width:18px;font-size:15px;text-align:center;color:var(--text-3);}
.side-group__head .arrow{margin-left:auto;font-size:12px;color:var(--text-3);transition:transform .22s var(--ease);}
.side-group__head:hover{background:var(--brand-hover);color:var(--brand);}
.side-group__head:hover .ico,.side-group__head:hover .arrow{color:var(--brand-2);}
.side-group.open .side-group__head .arrow{transform:rotate(180deg);}
.side-sub{display:none;flex-direction:column;gap:2px;margin:2px 0 4px;padding-left:8px;}
.side-group.open .side-sub{display:flex;}
.side-sub .side-link{height:42px;font-size:14px;}
.side-foot{padding:14px 20px 18px;border-top:1px solid var(--line);font-size:12px;color:var(--text-3);line-height:1.7;}
.side-foot a{font-size:12px;color:var(--text-2);}
.side-foot a:hover{color:var(--brand);}

.shell-main{margin-left:var(--sidebar-w);flex:1 1 auto;min-width:0;display:flex;flex-direction:column;}

/* ---------- 移动端顶栏 / 抽屉 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:1030;height:56px;align-items:center;
  gap:12px;padding:0 16px;background:#fff;border-bottom:1px solid var(--line);
}
.topbar.scrolled{box-shadow:var(--sh-sm);}
.topbar .brand__main{font-size:16px;}
.topbar__toggle{
  margin-left:auto;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--brand);font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .22s var(--ease);
}
.topbar__toggle:hover{background:var(--brand-hover);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,48,86,.45);z-index:1050;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;background:#fff;z-index:1060;
  transform:translateX(-100%);transition:transform .22s var(--ease);
  display:flex;flex-direction:column;box-shadow:var(--sh-lg);
}
.drawer.open{transform:translateX(0);}
.drawer .side-link,.drawer .side-group__head{height:48px;}
.drawer__close{
  width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:#fff;color:var(--text-2);cursor:pointer;
}
.drawer .brand{position:relative;}

/* ---------- 分类头 ---------- */
.page-head{padding:32px 0 0;}
.cat-hero{
  position:relative;border-radius:var(--r-hero);overflow:hidden;
  min-height:260px;display:flex;align-items:flex-end;
  background-image:linear-gradient(90deg,rgba(12,38,74,.86) 0%,rgba(12,38,74,.68) 46%,rgba(12,38,74,.32) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  box-shadow:var(--sh-md);
}
.cat-hero__inner{padding:34px 36px;max-width:760px;color:#fff;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:14px;}
.crumb a{color:rgba(255,255,255,.86);}
.crumb a:hover{color:#fff;}
.crumb span.sep{color:rgba(255,255,255,.45);}
.crumb .now{color:#fff;font-weight:600;}
.cat-hero h1{color:#fff;font-size:40px;font-weight:700;letter-spacing:-.01em;margin-bottom:12px;}
.cat-hero p{color:rgba(255,255,255,.9);font-size:16px;margin-bottom:18px;max-width:620px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tags .tag{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:12.5px;
}

/* ---------- 主体布局 ---------- */
.section{padding:48px 0 0;}
.section--last{padding-bottom:80px;}
.cat-body{display:grid;grid-template-columns:240px minmax(0,1fr);gap:32px;align-items:start;}

/* ---------- 筛选栏 ---------- */
.filter{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);padding:20px 18px;position:sticky;top:24px;
}
.filter-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;}
.filter-head h2{font-size:15px;font-weight:700;}
.filter-head a{font-size:12.5px;color:var(--text-3);}
.filter-head a:hover{color:var(--brand);}
.filter-group{padding-top:16px;margin-top:16px;border-top:1px solid var(--line);}
.filter-group:first-of-type{border-top:0;margin-top:8px;padding-top:0;}
.filter-group h3{font-size:13px;color:var(--text-2);font-weight:600;margin-bottom:10px;}
.opt-list{display:flex;flex-direction:column;gap:8px;}
.opt{position:relative;display:block;cursor:pointer;font-size:14px;}
.opt input{position:absolute;opacity:0;width:1px;height:1px;}
.opt span{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  min-height:36px;padding:6px 12px;border-radius:999px;border:1px solid var(--line);
  color:var(--text-2);background:#fff;transition:all .22s var(--ease);
}
.opt span em{font-style:normal;font-size:12px;color:var(--text-3);}
.opt:hover span{border-color:var(--brand-2);color:var(--brand);}
.opt input:checked + span{background:var(--brand-soft);border-color:#C6DCF5;color:var(--brand);font-weight:600;}
.opt input:checked + span em{color:var(--brand-2);}
.opt input:focus-visible + span{outline:2px solid var(--brand);outline-offset:2px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-cloud a{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;
  background:var(--brand-hover);color:var(--text-2);font-size:12.5px;
  transition:all .22s var(--ease);
}
.tag-cloud a:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);}

/* ---------- 列表头 ---------- */
.list-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:20px;}
.list-head h2{
  position:relative;font-size:22px;padding-left:14px;line-height:1.4;
}
.list-head h2::before{
  content:"";position:absolute;left:0;top:5px;width:4px;height:20px;border-radius:2px;background:var(--brand);
}
.list-head .meta{font-size:13px;color:var(--text-3);}

/* ---------- 卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.news-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.news-card__media{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-card__media img{transform:scale(1.03);}
.news-card__media .badge{
  position:absolute;left:12px;top:12px;height:24px;display:inline-flex;align-items:center;
  padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;backdrop-filter:none;
}
.badge--blue{background:var(--brand-soft);color:var(--brand);}
.badge--mint{background:var(--mint-soft);color:var(--mint);}
.badge--violet{background:var(--violet-soft);color:var(--violet);}
.badge--accent{background:#FDEDE2;color:var(--accent-dark);}
.news-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.news-card__body h3{font-size:17px;font-weight:600;line-height:1.5;}
.news-card__body h3 a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover .news-card__body h3 a{color:var(--brand);}
.news-card__body p{
  font-size:14px;color:var(--text-2);margin:0;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.news-card__meta i{font-size:12px;margin-right:4px;}
.news-card__meta .text-link{font-size:13px;font-weight:600;color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.news-card__meta .text-link:hover{color:var(--accent-dark);}

/* ---------- 分页 ---------- */
.pager{display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap;margin-top:36px;}
.pager a,.pager span{
  min-width:40px;height:40px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
  transition:all .22s var(--ease);font-variant-numeric:tabular-nums;
}
.pager a:hover{border-color:var(--brand-2);color:var(--brand);background:var(--brand-hover);}
.pager .current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700;}
.pager .dots{border:0;background:transparent;color:var(--text-3);min-width:24px;padding:0;}

/* ---------- 数据条 ---------- */
.stats-band{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);padding:26px 28px;display:grid;grid-template-columns:repeat(4,1fr);
}
.stat{position:relative;padding:0 24px;text-align:left;}
.stat:first-child{padding-left:0;}
.stat + .stat::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:1px;background:var(--line);}
.stat strong{display:block;font-size:28px;font-weight:800;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat span{font-size:13px;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-soft);border-radius:var(--r-hero);padding:40px 40px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
}
.cta-band h2{font-size:28px;margin-bottom:12px;}
.cta-band p{color:var(--text-2);max-width:520px;margin-bottom:22px;}
.subscribe{display:flex;gap:10px;flex-wrap:wrap;max-width:480px;}
.subscribe input{
  flex:1 1 240px;height:44px;border-radius:var(--r-btn);border:1px solid var(--input-line);
  background:#fff;padding:0 14px;font-size:14px;color:var(--text);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.subscribe input::placeholder{color:var(--text-3);}
.subscribe input:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(46,123,214,.16);}
.cta-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;}
.cta-media img{width:100%;height:100%;object-fit:cover;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .22s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-outline{background:#fff;color:var(--brand);border-color:#C6DCF5;}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ---------- FAQ ---------- */
.faq{max-width:800px;}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line);}
.accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-button{
  background:transparent;border:0;box-shadow:none;padding:18px 0;font-size:17px;font-weight:600;
  color:var(--text);min-height:56px;display:flex;align-items:center;gap:12px;
}
.accordion-button::after{
  margin-left:auto;width:20px;height:20px;background-size:20px;
  filter:invert(31%) sepia(64%) saturate(1419%) hue-rotate(187deg) brightness(88%) contrast(92%);
}
.accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:2px;}
.accordion-body{padding:0 0 20px;font-size:15px;color:var(--text-2);max-width:720px;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:80px;background:#fff;border-top:1px solid var(--line);}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 36px;}
.foot-brand .brand__main{display:block;font-size:18px;font-weight:800;color:var(--brand);margin-bottom:4px;}
.foot-brand .brand__sub{display:block;font-size:12px;color:var(--text-3);margin-bottom:12px;}
.foot-brand p{font-size:14px;color:var(--text-2);max-width:340px;margin:0;}
.site-footer h4{font-size:15px;font-weight:700;margin-bottom:14px;}
.foot-list{display:flex;flex-direction:column;gap:8px;}
.foot-list a,.foot-list span{font-size:14px;color:var(--text-2);}
.foot-list a:hover{color:var(--brand);}
.foot-bottom{
  border-top:1px solid var(--line);padding:18px 0;display:flex;flex-wrap:wrap;
  gap:8px 20px;justify-content:space-between;font-size:12px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .wrap{padding:0 24px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cat-body{grid-template-columns:210px minmax(0,1fr);gap:24px;}
  .sidebar{width:210px;}
  .shell-main{margin-left:210px;}
  .cat-hero h1{font-size:34px;}
}
@media (max-width:991.98px){
  .sidebar{display:none;}
  .shell-main{margin-left:0;}
  .topbar{display:flex;}
  .wrap{padding:0 16px;}
  .cat-body{display:block;}
  .filter{position:static;margin-bottom:20px;padding:16px;}
  .filter-group{margin-top:12px;padding-top:12px;}
  .opt-list{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;gap:8px;padding-bottom:4px;-webkit-overflow-scrolling:touch;}
  .opt{flex:0 0 auto;}
  .opt span{min-height:34px;white-space:nowrap;padding:4px 14px;}
  .opt span em{display:none;}
  .tag-cloud{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;}
  .tag-cloud a{flex:0 0 auto;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  .cat-hero{min-height:230px;}
  .cat-hero__inner{padding:24px;}
  .cat-hero h1{font-size:28px;}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:20px 0;padding:22px;}
  .stat:nth-child(3){padding-left:0;}
  .stat:nth-child(3)::before{display:none;}
  .cta-band{grid-template-columns:1fr;padding:28px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;padding:40px 0 28px;}
  .section{padding-top:40px;}
  .section--last{padding-bottom:56px;}
  .site-footer{margin-top:56px;}
}
@media (max-width:575.98px){
  body{font-size:15px;line-height:1.8;}
  .card-grid{grid-template-columns:1fr;}
  .cat-hero{min-height:210px;border-radius:16px;}
  .cat-hero__inner{padding:20px;}
  .cat-hero h1{font-size:26px;}
  .cat-hero p{font-size:14.5px;}
  .list-head h2{font-size:20px;}
  .cta-band h2{font-size:22px;}
  .foot-grid{grid-template-columns:1fr;gap:24px;}
  .pager a,.pager span{min-width:38px;height:38px;font-size:13px;padding:0 10px;}
  .stats-band{grid-template-columns:1fr;}
  .stat{padding:0;}
  .stat + .stat::before{display:none;}
  .stat + .stat{padding-top:16px;border-top:1px solid var(--line);}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: article */
:root{
  --brand:#1C5DA8;
  --brand-2:#2E7BD6;
  --brand-soft:#EAF2FC;
  --brand-hover-bg:#F2F7FD;
  --accent:#F0803C;
  --accent-hover:#D9691F;
  --green:#2FA37C;
  --purple:#7A6BF0;
  --warn:#E2A03F;
  --danger:#D0453B;
  --bg:#F7FAFD;
  --card:#FFFFFF;
  --line:#E3EBF3;
  --input-bd:#D7E2EE;
  --text:#1B2733;
  --text-2:#5A6B7C;
  --text-3:#8A98A8;
  --r-img:12px;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(18,48,86,.06);
  --sh-md:0 6px 18px rgba(18,48,86,.08);
  --sh-lg:0 18px 40px rgba(18,48,86,.12);
  --ease:.22s cubic-bezier(.2,.7,.3,1);
  --sidebar:240px;
  --wrap:1360px;
  --bs-primary:#1C5DA8;
  --bs-body-bg:#F7FAFD;
  --bs-body-color:#1B2733;
  --bs-border-color:#E3EBF3;
  --bs-border-radius:10px;
  --bs-link-color:#1C5DA8;
  --bs-link-hover-color:#2E7BD6;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.lock{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-2);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:22px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px;}

/* Bootstrap 覆盖层 */
.btn{border-radius:var(--r-btn);font-weight:600;transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease);}
.btn-primary{
  --bs-btn-bg:var(--brand);--bs-btn-border-color:var(--brand);
  --bs-btn-hover-bg:var(--brand-2);--bs-btn-hover-border-color:var(--brand-2);
  --bs-btn-active-bg:var(--brand);--bs-btn-active-border-color:var(--brand);
  --bs-btn-disabled-bg:var(--brand);--bs-btn-disabled-border-color:var(--brand);
  --bs-btn-focus-shadow-rgb:28,93,168;
}
.card{border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);background:var(--card);}
.badge{border-radius:999px;font-weight:600;}
.form-control{border-radius:var(--r-btn);border:1px solid var(--input-bd);min-height:44px;font-size:15px;color:var(--text);background:#fff;}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(46,123,214,.18);}
.accordion-item{border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;}
.accordion-button{font-weight:600;color:var(--text);background:transparent;box-shadow:none;padding:18px 0;}
.accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;}
.pagination{align-items:center;gap:8px;}
.page-link{border:1px solid var(--line);border-radius:var(--r-btn);color:var(--text-2);min-width:40px;height:40px;display:flex;align-items:center;justify-content:center;padding:0 12px;font-size:14px;transition:var(--ease);}
.page-link:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-soft);}
.breadcrumb{background:transparent;padding:0;margin:0;}

/* 应用骨架 */
.app-shell{min-height:100vh;}
.side-bar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;
  transition:transform var(--ease);
}
.brand-box{padding:18px 18px 14px;border-bottom:1px solid var(--line);}
.brand{display:block;}
.brand__main{display:block;font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--text);line-height:1.3;}
.brand__sub{display:block;font-size:11px;color:var(--text-3);margin-top:4px;letter-spacing:.04em;}
.side-nav{display:flex;flex-direction:column;gap:4px;padding:14px 12px 16px;overflow-y:auto;flex:1;}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:44px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;line-height:1.2;transition:background var(--ease),color var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:15px;color:var(--text-3);transition:color var(--ease);flex:none;}
.side-link:hover{background:var(--brand-hover-bg);color:var(--brand);}
.side-link:hover i{color:var(--brand);}
.side-link.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.side-link.active i{color:var(--brand);}
.side-link.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);}
.side-group{display:flex;flex-direction:column;}
.side-group__head{
  display:flex;align-items:center;gap:10px;width:100%;min-height:44px;padding:0 14px;
  border:0;background:transparent;border-radius:10px;color:var(--text-2);font-size:15px;
  cursor:pointer;text-align:left;transition:background var(--ease),color var(--ease);
}
.side-group__head .ico{width:18px;text-align:center;font-size:15px;color:var(--text-3);flex:none;}
.side-group__head span{flex:1;}
.side-group__head .arrow{font-size:11px;color:var(--text-3);transition:transform var(--ease);}
.side-group__head:hover{background:var(--brand-hover-bg);color:var(--brand);}
.side-group.open .side-group__head .arrow{transform:rotate(180deg);}
.side-sub{max-height:0;overflow:hidden;transition:max-height var(--ease);display:flex;flex-direction:column;gap:4px;}
.side-group.open .side-sub{max-height:360px;}
.side-sub .side-link{padding-left:24px;font-size:14px;min-height:42px;}
.side-foot{margin-top:auto;padding:14px 18px 18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:6px;}
.side-foot a{font-size:13px;color:var(--text-2);display:flex;align-items:center;gap:8px;}
.side-foot a:hover{color:var(--brand);}
.side-foot__note{font-size:12px;color:var(--text-3);}
.topbar{
  display:none;position:sticky;top:0;z-index:1030;height:56px;align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);
}
.topbar.scrolled{box-shadow:var(--sh-sm);}
.topbar .brand__main{font-size:16px;}
.burger{
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;
  color:var(--brand);font-size:17px;display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.burger:hover{background:var(--brand-soft);}
.mask{position:fixed;inset:0;background:rgba(18,48,86,.45);opacity:0;visibility:hidden;transition:var(--ease);z-index:1035;}
.mask.show{opacity:1;visibility:visible;}
.app-main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}

/* 按钮与标签 */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  cursor:pointer;transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
  border:1px solid transparent;
}
.btn-brand{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-brand:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;background:var(--brand-soft);color:var(--brand);white-space:nowrap;
}
.tag--green{background:#E7F5EF;color:#1F7A5B;}
.tag--purple{background:#EFEDFE;color:#5A4BD1;}
.tag--amber{background:#FDF1E1;color:#B0703F;}

/* 面包屑与文章头 */
.crumb{padding:28px 0 18px;display:flex;align-items:center;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--text-3);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C6D3E3;}
.crumb .current{color:var(--brand);font-weight:600;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* 文章布局 */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start;padding-bottom:24px;}
.article-head{display:flex;flex-direction:column;gap:14px;padding-bottom:22px;border-bottom:1px solid var(--line);}
.article-title{font-size:40px;line-height:1.28;font-weight:700;letter-spacing:-.01em;color:var(--text);}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:13px;color:var(--text-2);font-variant-numeric:tabular-nums;}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--text-3);font-size:13px;}
.article-hero{margin:26px 0 0;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md);}
.article-hero img{width:100%;aspect-ratio:21/9;object-fit:cover;}

/* 正文排版 */
.article-body{max-width:800px;padding:32px 0 8px;font-size:16px;line-height:1.85;color:var(--text);}
.article-body > * + *{margin-top:16px;}
.article-body h2{position:relative;padding-left:16px;font-size:28px;font-weight:700;line-height:1.4;margin-top:38px;color:var(--text);}
.article-body h2::before{content:"";position:absolute;left:0;top:9px;width:4px;height:20px;border-radius:2px;background:var(--brand);}
.article-body h3{font-size:20px;font-weight:600;line-height:1.5;margin-top:28px;color:var(--text);}
.article-body h4{font-size:17px;font-weight:600;margin-top:22px;color:var(--text);}
.article-body p{margin-top:16px;color:#2C3A48;}
.article-body a{text-decoration:underline;text-underline-offset:3px;}
.article-body ul,.article-body ol{margin-top:16px;}
.article-body li + li{margin-top:8px;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{
  margin-top:24px;padding:16px 20px;background:var(--brand-soft);
  border-left:4px solid var(--brand);border-radius:0 12px 12px 0;color:var(--text-2);
}
.article-body img{margin:24px auto;border-radius:var(--r-img);box-shadow:var(--sh-sm);}
.article-body figure{margin-top:24px;}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--text-3);}
.article-body table{width:100%;margin-top:24px;border:1px solid var(--line);border-radius:12px;border-collapse:separate;border-spacing:0;overflow:hidden;font-size:15px;}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);}
.article-body th{background:var(--brand-soft);font-weight:600;color:var(--text);}
.article-body tbody tr:nth-child(even) td{background:#FBFDFF;}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:28px 0;}
.article-body code{background:var(--brand-soft);color:var(--brand);padding:2px 6px;border-radius:6px;font-size:14px;}
.empty-state{
  margin-top:28px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:56px 24px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);text-align:center;
}
.empty-state .empty-ico{width:120px;height:120px;border-radius:50%;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:40px;}
.empty-state p{font-size:14px;color:var(--text-2);}

/* 侧栏 */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px;}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:20px;}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand);font-size:14px;}
.info-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-2);}
.info-list div{display:flex;justify-content:space-between;gap:12px;padding-bottom:10px;border-bottom:1px dashed var(--line);}
.info-list div:last-child{border-bottom:0;padding-bottom:0;}
.info-list b{font-weight:600;color:var(--text);}
.rank-list{display:flex;flex-direction:column;}
.rank-list a{display:flex;align-items:flex-start;gap:10px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--text-2);}
.rank-list a:last-child{border-bottom:0;}
.rank-list a:hover{color:var(--brand);}
.rank-list .num{
  flex:none;width:22px;height:22px;border-radius:6px;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.rank-list a:nth-child(-n+2) .num{background:var(--accent);color:#fff;}
.side-note{background:var(--brand-soft);border:1px solid #D8E7F8;border-radius:var(--r-card);padding:20px;}
.side-note h3{font-size:15px;font-weight:700;margin-bottom:8px;}
.side-note p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:14px;}
.side-note .btn-ghost{background:#fff;height:38px;font-size:13px;padding:0 14px;}

/* 结尾导航 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:36px;}
.post-nav__item{
  display:flex;flex-direction:column;gap:6px;padding:20px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);transition:var(--ease);
}
.post-nav__item:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:#CFE0F2;}
.post-nav__item--next{text-align:right;align-items:flex-end;}
.post-nav__item .pn-label{font-size:12px;color:var(--text-3);display:inline-flex;align-items:center;gap:6px;}
.post-nav__item .pn-title{font-size:15px;font-weight:600;color:var(--text);}
.post-nav__item:hover .pn-title{color:var(--brand);}
.post-nav-foot{margin-top:20px;text-align:center;}

/* 板块 */
.section{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap;}
.section-head h2{font-size:28px;font-weight:700;line-height:1.35;position:relative;padding-left:16px;}
.section-head h2::before{content:"";position:absolute;left:0;top:7px;width:4px;height:20px;border-radius:2px;background:var(--brand);}
.section-head p{font-size:14px;color:var(--text-2);margin-top:8px;padding-left:16px;}
.rec-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.rec-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;transition:var(--ease);height:100%;
}
.rec-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:#CFE0F2;}
.rec-card__media{overflow:hidden;aspect-ratio:16/9;background:var(--brand-soft);}
.rec-card__media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.rec-card:hover .rec-card__media img{transform:scale(1.03);}
.rec-card__body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rec-card__body h3{font-size:17px;font-weight:600;line-height:1.45;transition:color var(--ease);}
.rec-card:hover .rec-card__body h3{color:var(--brand);}
.rec-card__body p{font-size:13px;color:var(--text-2);line-height:1.7;}
.rec-card__more{margin-top:auto;font-size:13px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}

/* CTA */
.cta-band{background:var(--brand-soft);border-top:1px solid #DCE9F8;border-bottom:1px solid #DCE9F8;}
.cta-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;}
.cta-inner h2{font-size:28px;font-weight:700;line-height:1.4;}
.cta-inner p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:520px;}
.cta-form{display:flex;gap:12px;margin-top:20px;max-width:520px;}
.cta-form .form-control{flex:1;background:#fff;}
.cta-note{margin-top:10px;font-size:13px;color:var(--text-3);}
.cta-note.is-ok{color:var(--green);font-weight:600;}
.cta-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md);}
.cta-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* 页脚 */
.site-footer{background:var(--card);border-top:1px solid var(--line);margin-top:auto;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;padding:56px 0 36px;}
.foot-brand .brand__main{font-size:18px;font-weight:800;color:var(--text);}
.foot-brand .brand__sub{display:block;font-size:11px;color:var(--text-3);letter-spacing:.04em;margin-top:5px;}
.foot-brand p{margin-top:14px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px;}
.site-footer h4{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--text);}
.foot-list{display:flex;flex-direction:column;gap:9px;}
.foot-list a,.foot-list span{font-size:14px;color:var(--text-2);}
.foot-list a:hover{color:var(--brand);}
.foot-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:18px 0 26px;border-top:1px solid var(--line);font-size:12px;color:var(--text-3);
}

/* 响应式 */
@media (min-width:1440px){
  .wrap{padding:0 48px;}
}
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:28px;}
  .rec-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .article-title{font-size:34px;}
}
@media (max-width:991.98px){
  .topbar{display:flex;}
  .side-bar{transform:translateX(-100%);width:280px;box-shadow:var(--sh-lg);}
  .side-bar.open{transform:translateX(0);}
  .app-main{margin-left:0;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .side-col{position:static;}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:28px;}
  .cta-media{order:2;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 28px;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:48px 0;}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px;}
  .article-title{font-size:28px;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .article-body{font-size:15px;line-height:1.8;padding-top:24px;}
  .article-hero img{aspect-ratio:16/9;}
  .section-head h2{font-size:22px;}
  .cta-inner h2{font-size:22px;}
  .cta-form{flex-direction:column;}
  .cta-form .btn-brand{width:100%;}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .post-nav__item--next{text-align:left;align-items:flex-start;}
  .foot-grid{grid-template-columns:minmax(0,1fr);}
  .crumb .current{max-width:100%;}
}
@media (max-width:575.98px){
  .rec-grid{grid-template-columns:minmax(0,1fr);}
  .article-meta{gap:12px;}
  .side-card{padding:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category3 */
:root{
  --brand:#1C5DA8;
  --brand-2:#2E7BD6;
  --brand-soft:#EAF2FC;
  --accent:#F0803C;
  --accent-hover:#D9691F;
  --green:#2FA37C;
  --purple:#7A6BF0;
  --bg:#F7FAFD;
  --card:#FFFFFF;
  --line:#E3EBF3;
  --line-input:#D7E2EE;
  --t1:#1B2733;
  --t2:#5A6B7C;
  --t3:#8A98A8;
  --ok:#2FA37C;
  --warn:#E2A03F;
  --err:#D0453B;
  --r-hero:20px;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(18,48,86,.06);
  --sh-md:0 6px 18px rgba(18,48,86,.08);
  --sh-lg:0 18px 40px rgba(18,48,86,.12);
  --ease:.22s cubic-bezier(.2,.7,.3,1);
  --nav-w:240px;

  --bs-primary:#1C5DA8;
  --bs-primary-rgb:28,93,168;
  --bs-body-color:#1B2733;
  --bs-body-bg:#F7FAFD;
  --bs-border-color:#E3EBF3;
  --bs-border-radius:12px;
  --bs-border-radius-lg:16px;
  --bs-link-color:#1C5DA8;
  --bs-link-hover-color:#2E7BD6;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  font-feature-settings:"tnum";
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-2);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--t1);line-height:1.3;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

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

.wrap{
  width:100%;
  max-width:1360px;
  margin:0 auto;
  padding:0 32px;
}

/* ============ 侧边导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;
  transition:transform var(--ease);
}
.side-brand{
  height:72px;flex:0 0 72px;display:flex;align-items:center;gap:10px;
  padding:0 16px;border-bottom:1px solid var(--line);
}
.brand__mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;font-size:16px;font-weight:800;display:flex;align-items:center;justify-content:center;
  letter-spacing:.02em;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;min-width:0;}
.brand__main{font-size:15px;font-weight:800;color:var(--t1);white-space:nowrap;}
.brand__sub{font-size:11px;color:var(--t3);white-space:nowrap;}

.side-nav-list{padding:14px 12px;display:flex;flex-direction:column;gap:4px;flex:1;overflow-y:auto;}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--t2);font-weight:500;
  transition:background-color var(--ease),color var(--ease);
}
.side-link i{width:18px;font-size:15px;text-align:center;flex:0 0 18px;}
.side-link:hover{background:#F2F7FD;color:var(--brand);}
.side-link.active{background:var(--brand-soft);color:var(--brand);font-weight:700;}
.side-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--brand);
}
.side-group{display:flex;flex-direction:column;gap:4px;}
.side-group__head{
  width:100%;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border:0;border-radius:10px;background:transparent;
  font-size:15px;font-weight:600;color:var(--t1);cursor:pointer;
  transition:background-color var(--ease),color var(--ease);
}
.side-group__head .ico{width:18px;font-size:15px;text-align:center;flex:0 0 18px;color:var(--brand-2);}
.side-group__head span{flex:1;text-align:left;}
.side-group__head .arrow{font-size:12px;color:var(--t3);transition:transform var(--ease);}
.side-group__head:hover{background:#F2F7FD;color:var(--brand);}
.side-group.open .side-group__head .arrow{transform:rotate(180deg);}
.side-sub{display:none;flex-direction:column;gap:2px;padding:2px 0 4px;}
.side-group.open .side-sub{display:flex;}
.side-sub .side-link{height:40px;font-size:14px;padding-left:20px;}
.side-sub .side-link i{font-size:13px;}

.side-foot{
  border-top:1px solid var(--line);padding:14px 16px 16px;
  display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--t3);
}
.side-foot a{font-size:12px;color:var(--brand);font-weight:600;}
.side-foot a:hover{color:var(--brand-2);}

.nav-scrim{
  position:fixed;inset:0;background:rgba(18,48,86,.45);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:1030;
}
.nav-scrim.is-on{opacity:1;visibility:visible;}

.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:1035;
  background:#fff;align-items:center;justify-content:space-between;
  padding:0 14px;border-bottom:1px solid var(--line);
}
.mobile-topbar.scrolled{box-shadow:var(--sh-sm);}
.mt-brand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:800;color:var(--t1);}
.mt-brand:hover{color:var(--brand);}
.mt-burger{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--brand);font-size:17px;display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background-color var(--ease),border-color var(--ease);
}
.mt-burger:hover{background:var(--brand-soft);border-color:var(--brand-soft);}

/* ============ 主体 ============ */
.main{margin-left:var(--nav-w);min-height:60vh;}

/* ============ 分类头 ============ */
.cat-hero{
  position:relative;overflow:hidden;border-radius:0 0 var(--r-hero) var(--r-hero);
  min-height:260px;display:flex;align-items:flex-end;
  background:var(--brand);
}
.cat-hero__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.cat-hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,36,68,.90) 8%,rgba(16,52,96,.72) 48%,rgba(20,64,116,.42) 100%);
}
.cat-hero__inner{position:relative;padding-top:56px;padding-bottom:36px;color:#fff;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:14px;flex-wrap:wrap;}
.crumb a{color:rgba(255,255,255,.9);}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{opacity:.6;}
.crumb .now{color:#fff;font-weight:600;}
.cat-hero h1{
  font-size:40px;font-weight:700;color:#fff;letter-spacing:.01em;margin-bottom:12px;
}
.cat-hero p{
  font-size:16px;line-height:1.75;color:rgba(255,255,255,.9);
  max-width:640px;margin:0;
}

/* ============ 通用区块 ============ */
.section{padding:80px 0 0;}
.section:last-of-type{padding-bottom:0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.sec-head h2{
  position:relative;font-size:28px;font-weight:700;padding-left:14px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;background:var(--brand);
}
.sec-sub{font-size:14px;color:var(--t2);margin:8px 0 0;padding-left:14px;max-width:620px;}
.sec-more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.sec-more:hover{gap:9px;color:var(--brand-2);}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost,.btn-plain{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform var(--ease),background-color var(--ease),box-shadow var(--ease),color var(--ease),border-color var(--ease);
}
.btn-main{background:var(--accent);color:#fff;box-shadow:var(--sh-sm);}
.btn-main:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);}
.btn-plain{background:#fff;color:var(--brand);border-color:var(--line);}
.btn-plain:hover{background:var(--brand-soft);border-color:var(--brand-soft);color:var(--brand);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-xs{height:32px;padding:0 12px;font-size:13px;}
.btn-main[disabled],.btn-ghost[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 徽章 ============ */
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.chip--blue{background:var(--brand-soft);color:var(--brand);}
.chip--green{background:#E6F5EF;color:#1F7F60;}
.chip--purple{background:#EEECFE;color:#5A4BD6;}
.chip--warm{background:#FDEEE4;color:#C25A16;}

/* ============ 快速定位条 ============ */
.quickbar{
  margin-top:-26px;position:relative;z-index:5;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-md);padding:20px 22px;
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
}
.quickbar__label{font-size:14px;font-weight:700;color:var(--t1);display:flex;align-items:center;gap:8px;}
.quickbar__label i{color:var(--accent);}
.quickbar__tags{display:flex;gap:10px;flex-wrap:wrap;flex:1;}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:var(--r-pill);
  background:#F2F7FD;color:var(--t2);font-size:13px;font-weight:600;
  border:1px solid transparent;transition:all var(--ease);
}
.tag:hover{background:var(--brand-soft);color:var(--brand);border-color:#CFE2F7;}

/* ============ 卖点区（左卡 + 右要点） ============ */
.promo-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.promo-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.promo-card__media{aspect-ratio:16/9;overflow:hidden;background:#EEF4FB;}
.promo-card__media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.promo-card:hover .promo-card__media img{transform:scale(1.03);}
.promo-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;}
.promo-card__body h3{font-size:20px;font-weight:600;}
.promo-card__body p{font-size:14px;color:var(--t2);line-height:1.75;margin:0;}

.point-list{display:flex;flex-direction:column;gap:14px;height:100%;}
.point{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;display:flex;gap:16px;align-items:flex-start;
  box-shadow:var(--sh-sm);transition:transform var(--ease),box-shadow var(--ease);
}
.point:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.point__no{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;
}
.point__no--warm{background:#FDEEE4;color:#C25A16;}
.point__no--green{background:#E6F5EF;color:#1F7F60;}
.point h4{font-size:17px;font-weight:600;margin-bottom:6px;}
.point p{font-size:14px;color:var(--t2);line-height:1.7;margin:0;}

/* ============ 杂志式两列错位 ============ */
.mag-lead{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-md);overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.mag-lead:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);}
.mag-lead__media{display:block;aspect-ratio:21/9;overflow:hidden;background:#EEF4FB;}
.mag-lead__media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.mag-lead:hover .mag-lead__media img{transform:scale(1.03);}
.mag-lead__body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.mag-lead__body h3{font-size:20px;font-weight:600;line-height:1.45;}
.mag-lead__body h3 a{color:var(--t1);}
.mag-lead__body h3 a:hover{color:var(--brand);}
.mag-lead__body p{font-size:14px;color:var(--t2);line-height:1.75;margin:0;}
.mag-lead__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--line);}
.read-more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.read-more:hover{gap:9px;color:var(--brand-2);}

.meta{font-size:13px;color:var(--t3);display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--t3);display:inline-block;}

.mini-stack{display:flex;flex-direction:column;gap:14px;height:100%;}
.mag-mini{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--sh-sm);flex:1;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.mag-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#CFE2F7;}
.mag-mini__thumb{
  flex:0 0 108px;width:108px;aspect-ratio:4/3;border-radius:var(--r-img);overflow:hidden;background:#EEF4FB;
}
.mag-mini__thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.mag-mini:hover .mag-mini__thumb img{transform:scale(1.04);}
.mag-mini__body{display:flex;flex-direction:column;gap:6px;min-width:0;}
.mag-mini__body h4{font-size:16px;font-weight:600;line-height:1.5;}
.mag-mini__body h4 a{color:var(--t1);}
.mag-mini__body h4 a:hover{color:var(--brand);}
.mag-mini__body p{font-size:13px;color:var(--t2);line-height:1.65;margin:0;}

.pullquote{
  margin:32px 0;background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--r-card);padding:24px 28px;box-shadow:var(--sh-sm);
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
}
.pullquote i{font-size:22px;color:var(--accent);}
.pullquote p{font-size:17px;font-weight:600;color:var(--t1);margin:0;line-height:1.7;}
.pullquote span{font-size:13px;color:var(--t3);}

/* ============ 处理流程 ============ */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.flow-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);position:relative;
  transition:transform var(--ease),box-shadow var(--ease);
}
.flow-item:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.flow-item__step{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  color:var(--brand);background:var(--brand-soft);height:26px;padding:0 12px;border-radius:var(--r-pill);
  margin-bottom:14px;
}
.flow-item h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.flow-item p{font-size:14px;color:var(--t2);line-height:1.75;margin:0;}

/* ============ 数据条 ============ */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;
}
.stat{padding:26px 24px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat b{display:block;font-size:30px;font-weight:800;color:var(--brand);line-height:1.2;letter-spacing:-.01em;}
.stat span{display:block;font-size:14px;color:var(--t2);margin-top:8px;}

/* ============ FAQ ============ */
.faq{max-width:760px;margin:0 auto;}
.faq details{border-bottom:1px solid var(--line);}
.faq details:first-child{border-top:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;min-height:56px;display:flex;align-items:center;gap:14px;
  padding:14px 4px;font-size:16px;font-weight:600;color:var(--t1);
  transition:color var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"+";margin-left:auto;font-size:20px;font-weight:400;color:var(--brand);
  line-height:1;transition:transform var(--ease);
}
.faq details[open] summary::after{content:"−";}
.faq summary:hover{color:var(--brand);}
.faq .faq-body{padding:0 4px 20px;font-size:15px;color:var(--t2);line-height:1.85;}

/* ============ 分页 ============ */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:36px;}
.pager__item{
  min-width:38px;height:38px;padding:0 12px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;color:var(--t2);background:#fff;border:1px solid var(--line);
  transition:all var(--ease);
}
.pager__item:hover{color:var(--brand);border-color:#CFE2F7;background:var(--brand-soft);}
.pager__item.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}
.pager__item.is-disabled{opacity:.45;pointer-events:none;}
.pager__dots{color:var(--t3);border-color:transparent;background:transparent;pointer-events:none;}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-soft);border-radius:var(--r-hero);
  padding:44px 40px;display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
}
.cta-band h2{font-size:28px;font-weight:700;margin-bottom:12px;}
.cta-band p{font-size:15px;color:var(--t2);max-width:520px;margin-bottom:20px;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;max-width:520px;}
.cta-form .field{flex:1 1 240px;}
.field label{display:block;font-size:14px;color:var(--t2);margin-bottom:6px;}
.field input{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line-input);background:#fff;font-size:15px;color:var(--t1);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder{color:var(--t3);}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(28,93,168,.14);}
.field .hint{font-size:13px;color:var(--t3);margin-top:6px;}
.field.is-error input{border-color:var(--err);box-shadow:0 0 0 3px rgba(208,69,59,.12);}
.field.is-error .hint{color:var(--err);}
.cta-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);aspect-ratio:16/10;}
.cta-media img{width:100%;height:100%;object-fit:cover;}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-md);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);z-index:1020;
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease),background-color var(--ease);
}
.to-top.is-on{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:var(--brand-soft);}

/* ============ 页脚 ============ */
.site-footer{
  margin-left:var(--nav-w);margin-top:80px;background:#fff;
  border-top:1px solid var(--line);padding:56px 0 0;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.foot-brand{display:flex;flex-direction:column;gap:8px;}
.foot-brand .brand__main{font-size:18px;font-weight:800;color:var(--t1);}
.foot-brand .brand__sub{font-size:11px;color:var(--t3);}
.foot-brand p{font-size:14px;color:var(--t2);line-height:1.8;margin:8px 0 0;max-width:340px;}
.site-footer h4{font-size:15px;font-weight:700;margin-bottom:14px;}
.foot-list{display:flex;flex-direction:column;gap:4px;}
.foot-list a{font-size:14px;color:var(--t2);padding:4px 0;display:inline-block;}
.foot-list a:hover{color:var(--brand);}
.foot-bottom{
  margin-top:40px;border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:var(--t3);
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .wrap{padding:0 48px;}
}
@media (max-width:1199.98px){
  .cat-hero h1{font-size:34px;}
  .flow{grid-template-columns:repeat(3,1fr);gap:16px;}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px;}
}
@media (max-width:991.98px){
  :root{--nav-w:280px;}
  .side-nav{transform:translateX(-100%);width:280px;box-shadow:var(--sh-lg);}
  .side-nav.is-open{transform:none;}
  .mobile-topbar{display:flex;}
  .main{margin-left:0;padding-top:56px;}
  .site-footer{margin-left:0;margin-top:56px;}
  .wrap{padding:0 20px;}
  .section{padding:56px 0 0;}
  .cat-hero{min-height:230px;border-radius:0;}
  .cat-hero__inner{padding-top:40px;padding-bottom:28px;}
  .cat-hero h1{font-size:30px;}
  .cta-band{grid-template-columns:1fr;padding:32px 24px;}
  .cta-media{order:2;aspect-ratio:16/9;}
  .flow{grid-template-columns:1fr 1fr;}
  .stats{grid-template-columns:1fr 1fr;}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .foot-brand{grid-column:1 / -1;}
  .quickbar{margin-top:20px;}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px;}
  .section{padding:48px 0 0;}
  .cat-hero h1{font-size:26px;}
  .cat-hero p{font-size:15px;}
  .sec-head h2{font-size:22px;}
  .cta-band h2{font-size:22px;}
  .flow{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .mag-mini{flex-direction:row;}
  .mag-mini__thumb{flex:0 0 88px;width:88px;}
  .pager__item{min-width:34px;height:34px;font-size:13px;padding:0 10px;}
  .cta-form .field{flex:1 1 100%;}
  .to-top{right:16px;bottom:16px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand:#1C5DA8;
  --brand-light:#2E7BD6;
  --brand-soft:#EAF2FC;
  --accent:#F0803C;
  --accent-dark:#D9691F;
  --green:#2FA37C;
  --purple:#7A6BF0;
  --bg:#F7FAFD;
  --card:#FFFFFF;
  --line:#E3EBF3;
  --input-line:#D7E2EE;
  --text:#1B2733;
  --text-2:#5A6B7C;
  --text-3:#8A98A8;
  --white:#FFFFFF;
  --r-xl:20px;
  --r-lg:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(18,48,86,.06);
  --sh-md:0 6px 18px rgba(18,48,86,.08);
  --sh-lg:0 18px 40px rgba(18,48,86,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side-w:240px;
  --bs-primary:#1C5DA8;
  --bs-body-color:#1B2733;
  --bs-body-bg:#F7FAFD;
  --bs-border-radius:10px;
  --bs-border-color:#E3EBF3;
  --bs-link-color:#1C5DA8;
  --bs-link-hover-color:#2E7BD6;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han 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:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-light)}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============ 左侧 App Shell ============ */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1045;
  transition:transform .24s var(--ease);
}
.side-brand{
  height:72px;display:flex;align-items:center;
  padding:0 16px;border-bottom:1px solid var(--line);flex:0 0 auto;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand__mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-light) 100%);
  color:#fff;display:grid;place-items:center;font-size:16px;
  box-shadow:var(--sh-sm);
}
.brand__txt{display:flex;flex-direction:column;min-width:0}
.brand__main{font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.01em;line-height:1.2;white-space:nowrap}
.brand__sub{font-size:11px;color:var(--text-3);line-height:1.4;letter-spacing:.02em}
.side-nav{flex:1 1 auto;overflow-y:auto;padding:14px 12px}
.side-link{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);position:relative;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.side-link i{width:18px;font-size:15px;text-align:center;color:var(--text-3);transition:color .22s var(--ease)}
.side-link:hover{background:#F2F7FD;color:var(--brand)}
.side-link:hover i{color:var(--brand)}
.side-link.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.side-link.active i{color:var(--brand)}
.side-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--brand);
}
.side-group{margin-top:6px}
.side-group__head{
  width:100%;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border:0;background:transparent;
  border-radius:10px;font-size:15px;color:var(--text-2);cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.side-group__head .ico{width:18px;font-size:15px;text-align:center;color:var(--text-3)}
.side-group__head .arrow{margin-left:auto;font-size:12px;color:var(--text-3);transition:transform .22s var(--ease)}
.side-group__head:hover{background:#F2F7FD;color:var(--brand)}
.side-group.open .side-group__head .arrow{transform:rotate(180deg)}
.side-sub{overflow:hidden;max-height:0;transition:max-height .28s var(--ease);padding-left:4px}
.side-group.open .side-sub{max-height:260px}
.side-sub .side-link{height:42px;font-size:14px}
.side-foot{
  flex:0 0 auto;border-top:1px solid var(--line);padding:14px 16px 16px;
  font-size:12px;color:var(--text-3);line-height:1.9;
}
.side-foot a{display:block;font-size:13px;color:var(--text-2)}
.side-foot a:hover{color:var(--brand)}

.overlay{
  position:fixed;inset:0;background:rgba(18,48,86,.45);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
  z-index:1040;
}
.overlay.is-open{opacity:1;visibility:visible}

.topbar{
  display:none;position:sticky;top:0;z-index:1030;
  height:56px;background:var(--card);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;
  transition:box-shadow .22s var(--ease);
}
.topbar.is-scrolled{box-shadow:var(--sh-sm)}
.topbar .brand__mark{width:32px;height:32px;flex:0 0 32px;font-size:14px}
.topbar .brand__main{font-size:15px}
.topbar .brand__sub{display:none}
.hamburger{
  width:44px;height:44px;border:1px solid var(--line);background:var(--card);
  border-radius:10px;display:grid;place-items:center;gap:0;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;margin:2px 0;transition:transform .22s var(--ease),opacity .22s var(--ease)}

.main-wrap{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1360px;margin:0 auto;padding:0 32px}

/* ============ 分类头 banner ============ */
.page-banner{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-banner__bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.page-banner__mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,38,70,.92) 0%,rgba(18,52,94,.78) 46%,rgba(22,60,106,.42) 100%);
}
.page-banner__inner{position:relative;z-index:2;padding:56px 0 52px;min-height:260px;display:flex;flex-direction:column;justify-content:center}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:16px}
.crumb a{color:rgba(255,255,255,.88)}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.crumb .sep{opacity:.5}
.crumb .cur{color:#fff;font-weight:600}
.page-banner h1{
  font-size:40px;font-weight:700;color:#fff;letter-spacing:-.01em;
  margin-bottom:12px;line-height:1.2;
}
.page-banner__desc{color:rgba(255,255,255,.86);font-size:16px;max-width:640px;margin:0}
.page-banner__tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.banner-tag{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;color:#fff;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);
}
.banner-tag i{font-size:11px}

/* ============ 通用板块 ============ */
.section{padding:80px 0}
.section--tight{padding:0 0 80px}
.section--soft{background:#F2F7FD;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.sec-title{position:relative;padding-left:14px;font-size:28px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.sec-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;background:var(--brand);
}
.sec-desc{color:var(--text-2);font-size:15px;margin:0;max-width:620px}
.sec-link{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.sec-link:hover{gap:9px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  text-align:center;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-sm)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-outline{background:var(--card);border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand);height:38px;padding:0 4px;text-decoration:underline;text-underline-offset:3px}
.btn-ghost:hover{color:var(--brand-light)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.tag-blue{background:var(--brand-soft);color:var(--brand)}
.tag-green{background:#E7F5EF;color:#1E7A5C}
.tag-purple{background:#EFEDFD;color:#5447C7}
.tag-warm{background:#FDF0E6;color:#C4601F}

/* ============ 行走式列表 ============ */
.walk-list{border-top:1px solid var(--line)}
.walk-item{
  display:grid;grid-template-columns:40% 1fr;gap:32px;
  padding:28px 0;border-bottom:1px solid var(--line);align-items:center;
}
.anim-ready .walk-item{opacity:0;transform:translateY(18px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.anim-ready .walk-item.in{opacity:1;transform:none}
.walk-thumb{
  position:relative;display:block;border-radius:var(--r-img);overflow:hidden;
  aspect-ratio:16/9;background:#E9F0F8;box-shadow:var(--sh-sm);
}
.walk-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.walk-item:hover .walk-thumb img{transform:scale(1.03)}
.walk-thumb .tag{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--brand)}
.walk-body{min-width:0}
.walk-title{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:10px}
.walk-title a{color:var(--text);display:block}
.walk-title a:hover{color:var(--brand)}
.walk-sum{color:var(--text-2);font-size:15px;line-height:1.8;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.walk-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3);margin-bottom:12px}
.walk-meta i{font-size:12px;margin-right:4px;color:var(--text-3)}
.walk-more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;transition:gap .22s var(--ease)}
.walk-more:hover{gap:10px}

/* ============ 分页器 ============ */
.pager{
  display:flex;align-items:center;justify-content:center;gap:8px;
  flex-wrap:wrap;margin-top:48px;
}
.pager__nav,.pager__num{
  min-width:40px;height:40px;padding:0 14px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;color:var(--text-2);
  background:var(--card);border:1px solid var(--line);
  transition:all .22s var(--ease);
}
.pager__num{padding:0 12px}
.pager__nav:hover,.pager__num:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.pager__num.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.pager__num.is-active:hover{color:#fff}
.pager__dots{color:var(--text-3);padding:0 4px}
.pager__nav.is-disabled{opacity:.45;pointer-events:none}

/* ============ 流程步骤 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow__item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.flow__item:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.flow__num{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:15px;
  margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.flow__item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.flow__item p{color:var(--text-2);font-size:14px;line-height:1.8;margin:0}

/* ============ 阅读要点（左文右图） ============ */
.point-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.point-list{list-style:none;padding:0;margin:0}
.point-list li{
  display:flex;gap:14px;padding:18px 0;border-bottom:1px dashed var(--line);
}
.point-list li:last-child{border-bottom:0}
.point-list .ico{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:15px;
}
.point-list h3{font-size:17px;font-weight:600;margin-bottom:6px}
.point-list p{margin:0;color:var(--text-2);font-size:14px;line-height:1.8}
.point-pic{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-md);aspect-ratio:4/3}
.point-pic img{width:100%;height:100%;object-fit:cover}

/* ============ FAQ ============ */
.faq{max-width:800px}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item:first-child{border-top:1px solid var(--line)}
.faq__q{
  width:100%;min-height:56px;background:none;border:0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 0;font-size:17px;font-weight:600;color:var(--text);
  text-align:left;cursor:pointer;transition:color .22s var(--ease);
}
.faq__q:hover{color:var(--brand)}
.sign{position:relative;width:16px;height:16px;flex:0 0 16px}
.sign::before,.sign::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.sign::before{left:0;top:7px;width:16px;height:2px}
.sign::after{left:7px;top:0;width:2px;height:16px}
.faq__item.is-open .sign::after{transform:scaleY(0);opacity:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq__item.is-open .faq__a{max-height:360px}
.faq__a p{margin:0 0 20px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:720px}

/* ============ CTA ============ */
.cta{background:var(--brand-soft);border-top:1px solid var(--line)}
.cta__inner{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;padding:72px 0}
.cta h2{font-size:28px;font-weight:700;margin-bottom:14px}
.cta p{color:var(--text-2);font-size:15px;max-width:520px}
.cta__form{display:flex;gap:12px;margin:24px 0 12px;flex-wrap:wrap}
.input{
  height:44px;flex:1 1 240px;min-width:0;padding:0 14px;
  border:1px solid var(--input-line);border-radius:var(--r-btn);
  background:var(--card);font-size:15px;color:var(--text);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.input::placeholder{color:var(--text-3)}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(28,93,168,.14)}
.cta__tip{font-size:13px;color:var(--text-3)}
.cta__pic{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-lg);aspect-ratio:16/11}
.cta__pic img{width:100%;height:100%;object-fit:cover}

/* ============ 页脚 ============ */
.site-footer{background:#0F2A4A;color:rgba(255,255,255,.72);margin-top:auto}
.site-footer .wrap{padding-top:56px;padding-bottom:0}
.foot-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
}
.foot-brand .brand__main{display:block;font-size:18px;font-weight:700;color:#fff;margin-bottom:4px}
.foot-brand .brand__sub{display:block;font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.02em;margin-bottom:14px}
.foot-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:340px}
.site-footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.foot-list{display:flex;flex-direction:column;gap:4px}
.foot-list a{font-size:14px;color:rgba(255,255,255,.7);padding:5px 0;display:inline-block}
.foot-list a:hover{color:#fff}
.foot-list span{color:rgba(255,255,255,.7)}
.foot-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;font-size:12px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .wrap{padding:0 28px}
  .page-banner h1{font-size:34px}
  .walk-item{gap:26px}
}
@media (max-width:991px){
  .app-side{width:280px;transform:translateX(-100%);box-shadow:var(--sh-lg)}
  .app-side.is-open{transform:translateX(0)}
  .main-wrap{margin-left:0}
  .topbar{display:flex}
  .wrap{padding:0 20px}
  .section{padding:64px 0}
  .section--tight{padding:0 0 64px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .point-grid{grid-template-columns:1fr;gap:28px}
  .cta__inner{grid-template-columns:1fr;gap:32px;padding:56px 0}
  .cta__pic{order:2}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .sec-title{font-size:24px}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.8}
  .page-banner__inner{padding:36px 0 34px;min-height:220px}
  .page-banner h1{font-size:28px}
  .page-banner__desc{font-size:15px}
  .wrap{padding:0 16px}
  .section{padding:48px 0}
  .section--tight{padding:0 0 48px}
  .walk-item{grid-template-columns:1fr;gap:16px;padding:22px 0}
  .walk-title{font-size:18px}
  .walk-sum{-webkit-line-clamp:3}
  .flow{grid-template-columns:1fr}
  .sec-head{margin-bottom:24px}
  .sec-title{font-size:22px}
  .pager__nav,.pager__num{min-width:36px;height:36px;font-size:13px;padding:0 10px}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cta h2{font-size:22px}
  .cta__form{gap:10px}
  .input{flex:1 1 100%}
  .cta__form .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .anim-ready .walk-item{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --c-primary:#1C5DA8;
  --c-primary-light:#2E7BD6;
  --c-primary-soft:#EAF2FC;
  --c-primary-hover:#F2F7FD;
  --c-accent:#F0803C;
  --c-accent-dark:#D9691F;
  --c-teal:#2FA37C;
  --c-violet:#7A6BF0;
  --c-bg:#F7FAFD;
  --c-card:#FFFFFF;
  --c-line:#E3EBF3;
  --c-input:#D7E2EE;
  --c-text:#1B2733;
  --c-text-2:#5A6B7C;
  --c-text-3:#8A98A8;
  --c-white:#FFFFFF;
  --c-dark:#12304F;
  --r-hero:20px;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(18,48,86,.06);
  --sh-md:0 6px 18px rgba(18,48,86,.08);
  --sh-lg:0 18px 40px rgba(18,48,86,.12);
  --ease:.22s cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
  --bs-primary:#1C5DA8;
  --bs-body-color:#1B2733;
  --bs-body-bg:#F7FAFD;
  --bs-border-radius:10px;
  --bs-link-color:#1C5DA8;
  --bs-link-hover-color:#2E7BD6;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease);}
a:hover{color:var(--c-primary-light);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;}
a:focus-visible,button:focus-visible,input:focus-visible,.accordion-button:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
}
.wrap{width:100%;max-width:1360px;margin:0 auto;padding:0 32px;}

/* ---------- App shell ---------- */
.app{min-height:100vh;}
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--c-card);
  border-right:1px solid var(--c-line);
  display:flex;
  flex-direction:column;
  z-index:1045;
  transition:transform var(--ease);
}
.brand{
  height:72px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:0 20px;
  border-bottom:1px solid var(--c-line);
  flex:0 0 auto;
}
.brand:hover .brand__main{color:var(--c-primary);}
.brand__main{
  display:block;
  font-size:18px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--c-text);
  line-height:1.3;
  transition:color var(--ease);
}
.brand__sub{
  display:block;
  font-size:11px;
  color:var(--c-text-3);
  letter-spacing:.08em;
  line-height:1.5;
}
.side-nav{flex:1 1 auto;overflow-y:auto;padding:16px 12px;}
.side-link{
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 12px 0 14px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--c-text-2);
  position:relative;
  cursor:pointer;
}
.side-link i{width:18px;font-size:15px;text-align:center;flex:0 0 18px;}
.side-link span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.side-link:hover{background:var(--c-primary-hover);color:var(--c-primary);}
.side-link.active{
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-weight:600;
}
.side-link.active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:2px;
  background:var(--c-primary);
}
.side-group{margin-top:4px;}
.side-group__head{
  display:flex;
  align-items:center;
  gap:10px;
  width:100%;
  height:44px;
  padding:0 12px 0 14px;
  border:0;
  background:transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--c-text-2);
  text-align:left;
  cursor:pointer;
  transition:background var(--ease),color var(--ease);
}
.side-group__head:hover{background:var(--c-primary-hover);color:var(--c-primary);}
.side-group__head .arrow{margin-left:auto;font-size:12px;transition:transform var(--ease);}
.side-group.open .side-group__head .arrow{transform:rotate(180deg);}
.side-sub{
  display:none;
  padding:4px 0 4px 10px;
  margin-top:2px;
  border-left:1px dashed var(--c-line);
  margin-left:16px;
}
.side-group.open .side-sub{display:block;}
.side-sub .side-link{height:42px;font-size:14px;padding-left:12px;}
.side-foot{
  flex:0 0 auto;
  border-top:1px solid var(--c-line);
  padding:14px 16px 16px;
  font-size:12px;
  line-height:1.7;
  color:var(--c-text-3);
  display:flex;
  flex-direction:column;
  gap:2px;
}
.side-foot a{font-size:12px;color:var(--c-text-2);}
.side-foot a:hover{color:var(--c-primary);}
.overlay{
  position:fixed;
  inset:0;
  background:rgba(18,48,86,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
  z-index:1035;
}
.overlay.show{opacity:1;visibility:visible;}
.main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:1030;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:var(--c-card);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease);
}
.topbar.scrolled{box-shadow:var(--sh-sm);}
.topbar__brand{font-size:17px;font-weight:800;color:var(--c-text);letter-spacing:-.01em;}
.hamburger{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:var(--c-card);
  color:var(--c-primary);
  font-size:17px;
  cursor:pointer;
  transition:background var(--ease),border-color var(--ease);
}
.hamburger:hover{background:var(--c-primary-soft);border-color:#C9DDF4;}
.page-main{flex:1 1 auto;padding:28px 0 0;}

/* ---------- Breadcrumb ---------- */
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--c-text-3);
  margin-bottom:18px;
}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C3D0DD;}
.crumb .cur{color:var(--c-primary);font-weight:600;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  border-radius:var(--r-hero);
  overflow:hidden;
  min-height:280px;
  display:flex;
  align-items:flex-end;
  color:var(--c-white);
  box-shadow:var(--sh-md);
  margin-bottom:56px;
  background:var(--c-dark);
}
.cat-hero__bg{position:absolute;inset:0;}
.cat-hero__bg img{width:100%;height:100%;object-fit:cover;}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(11,30,54,.94) 0%,rgba(11,30,54,.78) 44%,rgba(11,30,54,.30) 100%);
}
.cat-hero__inner{position:relative;z-index:2;padding:44px;max-width:760px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.1em;
  color:#BFD6EE;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px;}
.cat-hero h1{
  font-size:40px;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:14px;
  color:var(--c-white);
}
.cat-hero__desc{
  font-size:16px;
  line-height:1.8;
  color:#D7E4F2;
  max-width:620px;
  margin-bottom:24px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px;}
.btn-main,.btn-ghost,.btn-outline,.btn-text{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-main{background:var(--c-accent);color:var(--c-white);border-color:var(--c-accent);}
.btn-main:hover{background:var(--c-accent-dark);border-color:var(--c-accent-dark);color:var(--c-white);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--c-white);border-color:rgba(255,255,255,.55);}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:var(--c-white);border-color:rgba(255,255,255,.8);}
.btn-outline{background:var(--c-card);color:var(--c-primary);border-color:#C3D8F0;}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary-light);transform:translateY(-1px);}
.btn-text{
  min-height:auto;padding:0;border:0;background:none;color:var(--c-primary);font-weight:600;
  text-decoration:underline;text-underline-offset:3px;
}
.btn-text:hover{color:var(--c-primary-light);}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:500;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
  color:#E4EEF9;
}
.badge-soft{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
}
.badge-blue{background:var(--c-primary-soft);color:var(--c-primary);}
.badge-teal{background:#E4F5EE;color:#1F7C5D;}
.badge-violet{background:#EDEBFE;color:#5849C9;}

/* ---------- Sections ---------- */
.section{margin-bottom:72px;}
.section-head{margin-bottom:28px;max-width:820px;}
.section-head h2{
  font-size:28px;
  font-weight:700;
  position:relative;
  padding-left:16px;
  margin-bottom:12px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:4px;height:20px;
  border-radius:2px;
  background:var(--c-primary);
}
.section-head p{font-size:15px;color:var(--c-text-2);max-width:760px;}

/* ---------- Stat row ---------- */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  margin-bottom:72px;
}
.stat{padding:26px 22px;border-right:1px solid var(--c-line);}
.stat:last-child{border-right:0;}
.stat b{
  display:block;
  font-size:30px;
  font-weight:800;
  color:var(--c-primary);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.stat span{display:block;font-size:14px;color:var(--c-text-2);margin-top:6px;}

/* ---------- Timeline ---------- */
.tl{position:relative;padding-left:34px;max-width:900px;}
.tl::before{
  content:"";
  position:absolute;
  left:9px;top:8px;bottom:8px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary) 0%,#C9DDF4 100%);
}
.tl-item{position:relative;padding-bottom:36px;}
.tl-item:last-child{padding-bottom:0;}
.tl-num{
  position:absolute;
  left:-35px;top:2px;
  width:22px;height:22px;
  border-radius:50%;
  background:var(--c-primary);
  color:var(--c-white);
  font-size:12px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 4px var(--c-bg);
}
.tl-item h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.tl-item p{font-size:15px;color:var(--c-text-2);max-width:720px;}
.tl-figure{
  margin:18px 0 0;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-sm);
  max-width:620px;
}
.tl-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.tl-figure figcaption{font-size:13px;color:var(--c-text-3);padding:10px 14px;background:var(--c-card);}
.tl-note{
  margin-top:14px;
  padding:14px 16px;
  border-left:4px solid var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:0 10px 10px 0;
  font-size:14px;
  color:var(--c-text-2);
  max-width:720px;
}

/* ---------- Split rows ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
  padding:32px 0;
  border-bottom:1px solid var(--c-line);
}
.split:last-child{border-bottom:0;padding-bottom:0;}
.split__media{
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-md);
  border:1px solid var(--c-line);
}
.split__media img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform var(--ease);}
.split__media:hover img{transform:scale(1.03);}
.split h3{font-size:20px;font-weight:600;margin:14px 0 12px;}
.split p{font-size:15px;color:var(--c-text-2);}
.split ul{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.split li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:var(--c-text-2);
}
.split li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-primary-light);
}

/* ---------- Feature cards ---------- */
.card-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.feature-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-sm);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.feature-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:#D2E2F3;}
.feature-card .ico{
  width:44px;height:44px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:18px;
  margin-bottom:18px;
}
.feature-card:nth-child(2) .ico{background:#E4F5EE;color:#1F7C5D;}
.feature-card:nth-child(3) .ico{background:#EDEBFE;color:#5849C9;}
.feature-card:nth-child(4) .ico{background:#FDF0E7;color:#C05A16;}
.feature-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.feature-card p{font-size:15px;color:var(--c-text-2);margin-bottom:14px;}
.feature-card ul{display:flex;flex-direction:column;gap:8px;}
.feature-card li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--c-text-2);
}
.feature-card li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:6px;height:6px;
  border-radius:50%;
  background:#B9CFE6;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:760px;}
.accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--c-line);
  border-radius:0!important;
}
.accordion-item:first-of-type{border-top:1px solid var(--c-line);}
.accordion-button{
  background:transparent;
  color:var(--c-text);
  font-size:17px;
  font-weight:600;
  padding:18px 0;
  min-height:56px;
  box-shadow:none!important;
  border-radius:0!important;
}
.accordion-button:hover{color:var(--c-primary);}
.accordion-button:not(.collapsed){
  background:transparent;
  color:var(--c-primary);
}
.accordion-button::after{
  content:"+";
  background-image:none!important;
  width:24px;height:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  font-weight:400;
  color:var(--c-primary);
  transform:none;
  transition:transform var(--ease),color var(--ease);
  margin-left:16px;
}
.accordion-button:not(.collapsed)::after{
  content:"−";
  transform:rotate(180deg);
}
.accordion-body{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text-2);
  max-width:660px;
}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--c-primary-soft);
  border-radius:var(--r-hero);
  padding:48px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
  overflow:hidden;
  margin-bottom:8px;
}
.cta-band h2{font-size:28px;font-weight:700;margin-bottom:14px;}
.cta-band p{font-size:15px;color:var(--c-text-2);max-width:520px;}
.cta-form{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap;}
.cta-form input{
  flex:1 1 220px;
  min-width:0;
  height:44px;
  padding:0 14px;
  border:1px solid var(--c-input);
  border-radius:var(--r-btn);
  background:var(--c-white);
  font-size:15px;
  color:var(--c-text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.cta-form input::placeholder{color:var(--c-text-3);}
.cta-form input:focus{
  outline:none;
  border-color:var(--c-primary-light);
  box-shadow:0 0 0 3px rgba(46,123,214,.18);
}
.form-hint{font-size:13px;color:var(--c-text-3);margin-top:12px;}
.cta-media{
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-lg);
  border:1px solid #D5E4F4;
}
.cta-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--c-card);
  border-top:1px solid var(--c-line);
  margin-top:80px;
  padding:56px 0 28px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
}
.foot-brand .brand__main{font-size:18px;}
.foot-brand .brand__sub{margin-bottom:14px;font-size:12px;letter-spacing:.06em;}
.foot-brand p{font-size:14px;color:var(--c-text-2);line-height:1.85;max-width:340px;}
.site-footer h4{font-size:15px;font-weight:700;margin-bottom:16px;}
.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list a{font-size:14px;color:var(--c-text-2);}
.foot-list a:hover{color:var(--c-primary);}
.foot-list span{font-size:14px;color:var(--c-text-2);padding:0;}
.foot-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
  border-top:1px solid var(--c-line);
  margin-top:40px;
  padding-top:22px;
  font-size:12px;
  color:var(--c-text-3);
}

/* ---------- Responsive ---------- */
@media (min-width:1440px){
  .wrap{padding:0 48px;}
}
@media (max-width:1199.98px){
  .stat b{font-size:26px;}
  .cat-hero h1{font-size:34px;}
}
@media (max-width:991.98px){
  .sidebar{transform:translateX(-100%);box-shadow:var(--sh-lg);}
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;}
  .topbar{display:flex;}
  .page-main{padding-top:24px;}
  .side-sub .side-link{height:48px;}
  .side-link{height:48px;}
  .side-group__head{height:48px;}
  .cat-hero{margin-bottom:44px;}
  .cat-hero__inner{padding:32px;}
  .section{margin-bottom:56px;}
  .stat-row{margin-bottom:56px;}
  .split{grid-template-columns:1fr;gap:24px;}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:36px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767.98px){
  .cat-hero{min-height:300px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero__desc{font-size:15px;}
  .stat-row{grid-template-columns:1fr 1fr;}
  .stat{padding:20px 16px;border-bottom:1px solid var(--c-line);}
  .stat:nth-child(2n){border-right:0;}
  .stat:nth-child(n+3){border-bottom:0;}
  .card-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:22px;}
  .tl{padding-left:26px;}
  .tl::before{left:7px;}
  .tl-num{left:-27px;width:20px;height:20px;font-size:11px;}
  .section-head h2::before{top:4px;height:18px;}
  .cta-band h2{font-size:22px;}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px;}
  .cat-hero__inner{padding:24px 20px;}
  .cat-hero h1{font-size:26px;}
  .hero-actions{gap:10px;}
  .btn-main,.btn-ghost,.btn-outline{width:100%;padding:0 16px;}
  .cta-band{padding:26px 20px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;}
  .feature-card{padding:22px;}
  .section{margin-bottom:48px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
}