/* roulang page: index */
:root{
  --c-ink:#0F1311;
  --c-accent:#C8F04B;
  --c-sub:#FF6A2B;
  --c-bg:#F6F4EF;
  --c-card:#FFFFFF;
  --c-line:#E4E1D8;
  --t-main:#14181A;
  --t-sub:#5A6058;
  --t-mute:#8A8F86;
  --r-card:20px;
  --r-img:16px;
  --r-tag:6px;
  --shadow:0 1px 2px rgba(15,19,17,.06), 0 18px 44px -26px rgba(15,19,17,.30);
  --shadow-hover:0 2px 4px rgba(15,19,17,.08), 0 26px 56px -22px rgba(15,19,17,.38);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sidebar-w:232px;
  --bs-body-bg:var(--c-bg);
  --bs-body-color:var(--t-main);
  --bs-primary:var(--c-accent);
  --bs-border-radius:var(--r-card);
  --bs-body-font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-main);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.005em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-sub)}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.28;letter-spacing:-.01em}
h1{font-size:clamp(2.6rem,5.6vw,4.4rem);font-weight:900;letter-spacing:-.02em;line-height:1.14}
h2{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:800}
h3{font-size:1.25rem;font-weight:700;line-height:1.45}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px}

/* ---------- 布局骨架 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-ink);color:#fff;z-index:1040;
  display:flex;flex-direction:column;padding:28px 20px 24px;
}
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding-inline:clamp(20px,4vw,64px)}
section{padding-block:96px}
section.tight{padding-block:72px}
.dark-band{background:var(--c-ink);color:#fff}
.sand-band{background:var(--c-bg)}

/* ---------- 侧栏 ---------- */
.sidebar__brand{display:flex;align-items:center;gap:10px;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.10)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;background:var(--c-accent);
  color:var(--c-ink);font-weight:900;font-size:15px;letter-spacing:-.02em;
  display:flex;align-items:center;justify-content:center;font-family:"Inter",sans-serif;
}
.brand-text{font-weight:900;font-size:16px;letter-spacing:-.01em;color:#fff;line-height:1.3}
.sidebar__nav{display:flex;flex-direction:column;gap:2px;padding:22px 0;overflow-y:auto;flex:1 1 auto}
.nav-item{
  position:relative;display:block;padding:11px 12px 11px 16px;border-radius:10px;
  color:#B9C0B6;font-size:14.5px;font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:22px;background:var(--c-accent);border-radius:2px;
  transition:transform .26s var(--ease);
}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.04)}
.nav-item.active{color:#fff;background:rgba(200,240,75,.06);font-weight:700}
.nav-item.active::before{transform:translateY(-50%) scaleY(1)}
.sidebar__foot{border-top:1px solid rgba(255,255,255,.10);padding-top:20px;display:flex;flex-direction:column;gap:12px}
.sidebar__foot p{margin:0;font-size:12.5px;color:#8A8F86;letter-spacing:.02em}

/* ---------- 按钮 ---------- */
.btn-mk{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid var(--c-accent);
  background:var(--c-accent);color:var(--c-ink);font-weight:700;font-size:15px;
  cursor:pointer;transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.btn-mk:hover{background:var(--c-ink);color:var(--c-accent);border-color:var(--c-ink);transform:translateY(-2px)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid rgba(255,255,255,.42);
  background:transparent;color:#fff;font-weight:600;font-size:15px;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{background:#fff;color:var(--c-ink);border-color:#fff;transform:translateY(-2px)}
.btn-ghost.dark{border-color:rgba(15,19,17,.35);color:var(--c-ink)}
.btn-ghost.dark:hover{background:var(--c-ink);color:var(--c-accent);border-color:var(--c-ink)}
.btn-line{width:100%;font-size:14px;padding:11px 18px;background:transparent;border:1px solid rgba(255,255,255,.28);color:#fff;border-radius:999px;font-weight:600;transition:background .22s var(--ease),color .22s var(--ease)}
.btn-line:hover{background:var(--c-accent);color:var(--c-ink);border-color:var(--c-accent)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14.5px;color:var(--t-main);position:relative;padding-bottom:3px}
.link-arrow::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:24px;background:var(--c-accent);transition:width .3s var(--ease)}
.link-arrow:hover::after{width:100%}
.link-arrow:hover{color:var(--t-main)}

/* ---------- 通用元素 ---------- */
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--t-sub);margin-bottom:16px;
}
.eyebrow::before{content:"— ";color:var(--c-accent);font-weight:900}
.eyebrow.on-dark{color:#9AA396}
.tag{
  display:inline-block;padding:3px 9px;border-radius:var(--r-tag);
  background:rgba(255,106,43,.08);color:var(--c-sub);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.lead{font-size:17px;color:var(--t-sub);max-width:62ch}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px}
.section-head p{color:var(--t-sub);max-width:56ch;margin-top:14px}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background-color:var(--c-ink);
  background-image:linear-gradient(100deg,rgba(15,19,17,.94) 0%,rgba(15,19,17,.78) 46%,rgba(15,19,17,.55) 100%),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  padding-block:clamp(72px,9vw,120px);
}
.hero__inner{position:relative;z-index:2;max-width:760px}
.hero h1{color:#fff;margin-bottom:24px}
.hero h1 em{font-style:normal;color:var(--c-accent)}
.hero__sub{font-size:clamp(16px,1.4vw,19px);color:#CFD5CB;max-width:56ch;margin-bottom:36px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px}
.hero__stats{
  display:flex;flex-wrap:wrap;gap:clamp(28px,5vw,64px);
  margin-top:64px;padding-top:32px;border-top:1px solid rgba(255,255,255,.14);
}
.hero__stats div{display:flex;flex-direction:column;gap:2px}
.hero__stats strong{
  font-family:"Inter",system-ui,sans-serif;font-weight:200;font-size:clamp(1.9rem,3.4vw,2.7rem);
  line-height:1;color:var(--c-accent);font-variant-numeric:tabular-nums;
}
.hero__stats span{font-size:13px;color:#9AA396;letter-spacing:.06em}

/* ---------- 主张三条 ---------- */
.claims{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:var(--c-card)}
.claim{padding:36px 32px;border-right:1px solid var(--c-line)}
.claim:last-child{border-right:0}
.claim__icon{
  width:44px;height:44px;border-radius:12px;background:rgba(200,240,75,.28);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.claim__icon svg{width:22px;height:22px;stroke:var(--c-ink);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.claim h3{font-size:1.08rem;margin-bottom:8px}
.claim p{margin:0;font-size:14.5px;color:var(--t-sub);line-height:1.75}

/* ---------- 故事 ---------- */
.story{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px);align-items:center}
.story__media{position:relative}
.story__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card)}
.story__badge{
  position:absolute;left:-22px;bottom:-22px;width:132px;height:132px;border-radius:18px;
  background:var(--c-ink);color:#fff;display:flex;flex-direction:column;justify-content:center;
  align-items:flex-start;padding:18px 20px;box-shadow:var(--shadow);
}
.story__badge strong{font-family:"Inter",sans-serif;font-weight:200;font-size:2rem;line-height:1;color:var(--c-accent);font-variant-numeric:tabular-nums}
.story__badge span{font-size:12px;color:#9AA396;letter-spacing:.04em;margin-top:6px}
.story__text h2{margin-bottom:20px}

/* ---------- 精选内容卡 ---------- */
.feat-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;margin-bottom:24px}
.feat-side{display:grid;gap:24px}
.feat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .3s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(15,19,17,.2)}
.thumb{display:block;overflow:hidden;border-radius:0}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .thumb img{transform:scale(1.04)}
.card__body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.card__body h3{margin:0}
.card__body h3 a:hover{color:var(--c-sub)}
.card__body p{margin:0;font-size:14.5px;color:var(--t-sub);line-height:1.75}
.card__foot{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.card__foot time{font-size:12.5px;color:var(--t-mute);font-variant-numeric:tabular-nums;font-family:"Inter",sans-serif}
.card--lg .thumb{aspect-ratio:16/10}
.card--lg h3{font-size:1.45rem}
.card--sm .thumb{aspect-ratio:16/10}
.card--sm h3{font-size:1.02rem}
.card--side{flex-direction:row;align-items:stretch}
.card--side .thumb{flex:0 0 42%;aspect-ratio:auto;min-height:150px}
.card--side .card__body{padding:18px 20px}
.card--side h3{font-size:1rem}

/* ---------- CMS 列表 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .3s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(15,19,17,.2)}
.post-card .thumb{aspect-ratio:16/10}
.post-card:hover .thumb img{transform:scale(1.04)}
.empty-state{
  grid-column:1/-1;text-align:center;padding:64px 24px;border:1px dashed var(--c-line);
  border-radius:var(--r-card);background:var(--c-card);
}
.empty-state svg{width:40px;height:40px;stroke:var(--t-mute);fill:none;stroke-width:1.5;margin-bottom:14px}
.empty-state p{color:var(--t-sub);margin-bottom:18px}

/* ---------- 信任 ---------- */
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:56px}
.stat-item{border-left:2px solid var(--c-accent);padding-left:18px}
.stat-item strong{
  display:block;font-family:"Inter",sans-serif;font-weight:200;
  font-size:clamp(1.7rem,2.8vw,2.3rem);line-height:1.1;color:var(--c-ink);font-variant-numeric:tabular-nums;
}
.stat-item span{font-size:13.5px;color:var(--t-sub);letter-spacing:.04em}
.logo-wall{display:flex;flex-wrap:wrap;gap:14px 32px;padding:26px 0;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);margin-bottom:56px}
.logo-wall span{font-size:14px;font-weight:600;color:#B4B8AF;letter-spacing:.02em;transition:color .25s var(--ease)}
.logo-wall span:hover{color:var(--c-ink)}
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.quote{
  position:relative;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:34px 32px 28px;
}
.quote::before{
  content:"“";position:absolute;top:6px;left:22px;font-size:64px;line-height:1;
  color:var(--c-accent);font-family:Georgia,serif;
}
.quote p{position:relative;font-size:15.5px;color:var(--t-main);margin-bottom:20px}
.quote cite{font-style:normal;font-size:13px;color:var(--t-mute)}
.quote cite b{color:var(--t-main);font-weight:700}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:880px}
.faq-item{background:var(--c-card);border:1px solid var(--c-line);border-radius:14px;overflow:hidden;transition:border-color .25s var(--ease)}
.faq-item.open{border-color:rgba(15,19,17,.24)}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;cursor:pointer;
  padding:20px 24px;font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-arrow{width:10px;height:10px;border-right:2px solid var(--c-sub);border-bottom:2px solid var(--c-sub);transform:rotate(-45deg);flex:0 0 10px;transition:transform .25s var(--ease)}
.faq-item.open .faq-arrow{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.faq-a p{padding:0 24px 22px;margin:0;color:var(--t-sub);font-size:15px}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--c-ink);color:#fff}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.045) 0 1px,transparent 1px 64px);
}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-60px;width:240px;height:460px;
  background:var(--c-accent);opacity:.10;transform:rotate(18deg);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.cta-inner h2{margin-bottom:16px}
.cta-inner p{color:#C2C9BD;margin:0}
.sub-form{display:flex;gap:16px;align-items:flex-end;flex-wrap:wrap}
.sub-form .field{flex:1 1 240px;display:flex;flex-direction:column;gap:8px}
.sub-form label{font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:#8A8F86;font-weight:700}
.sub-form input{
  background:transparent;border:0;border-bottom:2px solid rgba(255,255,255,.3);
  padding:10px 2px;color:#fff;font-size:15.5px;border-radius:0;transition:border-color .25s var(--ease);
}
.sub-form input::placeholder{color:#6E746B}
.sub-form input:focus{outline:none;border-bottom-color:var(--c-accent)}
.privacy{margin-top:18px;font-size:12px;color:#7C8177;letter-spacing:.02em}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#B9C0B6;padding-block:72px 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.site-footer h4{font-size:14px;letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-bottom:20px;font-weight:700}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.site-footer a{font-size:14.5px;color:#B9C0B6}
.site-footer a:hover{color:var(--c-accent)}
.site-footer p{font-size:14px;line-height:1.8;margin:0}
.footer-brand .brand-text{display:inline-block;font-size:18px;margin-bottom:16px}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:#7C8177;letter-spacing:.02em;
}

/* ---------- 移动顶栏与抽屉 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:1030;height:64px;
  background:var(--c-ink);align-items:center;justify-content:space-between;
  padding-inline:20px;color:#fff;
}
.topbar .brand-text{font-size:15px}
.topbar__toggle{
  width:42px;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
  background:transparent;display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.topbar__toggle span{display:block;width:18px;height:2px;background:var(--c-accent);position:relative}
.topbar__toggle span::before,.topbar__toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-accent)}
.topbar__toggle span::before{top:-6px}
.topbar__toggle span::after{top:6px}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(15,19,17,.55);opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:1035;
}
.nav-backdrop.show{opacity:1;visibility:visible}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sidebar-w:200px}
}
@media (max-width:991.98px){
  .topbar{display:flex}
  .sidebar{width:82vw;max-width:320px;transform:translateX(-100%);transition:transform .32s var(--ease)}
  .sidebar.open{transform:none}
  .sidebar .nav-item{padding:15px 14px 15px 18px;font-size:15.5px;border-radius:8px}
  .sidebar__nav{padding-top:12px}
  .main{margin-left:0}
  section{padding-block:64px}
  .hero{min-height:62vh;padding-block:64px}
  .story{grid-template-columns:1fr}
  .story__badge{left:auto;right:-8px;bottom:-18px;width:112px;height:112px}
  .feat-grid{grid-template-columns:1fr}
  .feat-row{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .claims{grid-template-columns:1fr}
  .claim{border-right:0;border-bottom:1px solid var(--c-line)}
  .claim:last-child{border-bottom:0}
  .stats-strip{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  body{font-size:15.6px}
  section{padding-block:56px}
  .hero__stats{gap:24px;margin-top:44px}
  .hero__stats div{flex:1 1 40%}
  .feat-row{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .stats-strip{grid-template-columns:1fr 1fr;gap:20px}
  .card--side{flex-direction:column}
  .card--side .thumb{flex:none;aspect-ratio:16/10;min-height:0}
  .footer-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:32px}
  .btn-mk,.btn-ghost{width:100%}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --c-ink:#0F1311;
  --c-ink-2:#171C19;
  --c-accent:#C8F04B;
  --c-sub:#FF6A2B;
  --c-bg:#F6F4EF;
  --c-card:#FFFFFF;
  --c-line:#E4E1D8;
  --t-1:#14181A;
  --t-2:#5A6058;
  --t-3:#8A8F86;
  --r-card:20px;
  --r-img:16px;
  --r-pill:999px;
  --r-tag:6px;
  --sh-1:0 1px 2px rgba(15,19,17,.06), 0 18px 44px -26px rgba(15,19,17,.30);
  --sh-2:0 2px 6px rgba(15,19,17,.08), 0 30px 64px -28px rgba(15,19,17,.36);
  --side-w:232px;
  --bs-primary:#C8F04B;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#14181A;
  --bs-border-radius:20px;
  --bs-body-font-family:"Noto Sans SC","Inter",system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;
  --bs-link-color:#14181A;
  --bs-link-hover-color:#14181A;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  background:var(--c-bg);
  color:var(--t-1);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--t-1);text-decoration:none;}
a:hover{color:var(--t-1);}
button,input{font-family:inherit;}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.01em;margin:0;color:var(--t-1);}
h1{font-weight:900;letter-spacing:-.02em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}

.container-x{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 clamp(20px,4vw,64px);
}

/* ============ 左侧导航 ============ */
.sidebar{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--side-w);
  background:var(--c-ink);
  color:#DDE2DA;
  display:flex;
  flex-direction:column;
  padding:28px 20px 24px;
  z-index:1040;
}
.sidebar__brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding-bottom:22px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  border-radius:10px;
  background:var(--c-accent);
  color:var(--c-ink);
  font-family:"Inter",sans-serif;
  font-weight:900;
  font-size:15px;
  letter-spacing:-.03em;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{
  color:#fff;
  font-weight:900;
  font-size:16px;
  letter-spacing:-.01em;
  line-height:1.25;
}
.sidebar__nav{
  display:flex;
  flex-direction:column;
  gap:2px;
  margin-top:22px;
}
.sidebar__nav .nav-item{
  position:relative;
  display:block;
  padding:11px 12px 11px 16px;
  color:#B9C0B6;
  font-size:15px;
  border-radius:10px;
  transition:color .22s ease, background .22s ease;
}
.sidebar__nav .nav-item::before{
  content:"";
  position:absolute;
  left:4px;top:50%;
  width:3px;height:0;
  transform:translateY(-50%);
  background:var(--c-accent);
  border-radius:3px;
  transition:height .25s cubic-bezier(.22,.61,.36,1);
}
.sidebar__nav .nav-item:hover{
  color:#fff;
  background:rgba(255,255,255,.04);
}
.sidebar__nav .nav-item.active{
  color:#fff;
  background:rgba(200,240,75,.06);
}
.sidebar__nav .nav-item.active::before{height:20px;}
.sidebar__nav .nav-item:focus-visible,
.sidebar__foot a:focus-visible,
.sidebar__brand a:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
}
.sidebar__divider{
  height:1px;
  background:rgba(255,255,255,.08);
  margin:22px 0;
}
.sidebar__foot{margin-top:auto;}
.sidebar__foot .side-cta{
  display:block;
  text-align:center;
  background:var(--c-accent);
  color:var(--c-ink);
  font-weight:800;
  font-size:14.5px;
  padding:12px 14px;
  border-radius:var(--r-pill);
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.sidebar__foot .side-cta:hover{
  background:#0F1311;
  color:var(--c-accent);
  box-shadow:inset 0 0 0 1px var(--c-accent);
  transform:translateY(-2px);
}
.sidebar__foot .side-mail{
  margin-top:14px;
  font-size:12.5px;
  color:#8A8F86;
  line-height:1.7;
}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:64px;
  background:var(--c-ink);
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  z-index:1050;
}
.topbar .brand-text{font-size:15px;}
.topbar__burger{
  width:42px;height:42px;
  border:1px solid rgba(255,255,255,.16);
  background:transparent;
  border-radius:10px;
  color:#fff;
  font-size:17px;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.topbar__burger:hover{border-color:var(--c-accent);color:var(--c-accent);}
.topbar__burger:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.scrim{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(15,19,17,.55);
  z-index:1055;
}
.scrim.show{display:block;}

/* ============ 主内容 ============ */
.main{
  margin-left:var(--side-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.main-body{flex:1 1 auto;}

/* ============ 面包屑 ============ */
.crumb{
  padding:28px 0 0;
  font-size:13px;
  color:var(--t-3);
}
.crumb a{color:var(--t-3);transition:color .2s ease;}
.crumb a:hover{color:var(--c-sub);}
.crumb .sep{margin:0 8px;color:#C9C6BC;}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  min-height:320px;
  display:flex;
  align-items:flex-end;
  margin-top:20px;
  border-radius:var(--r-card);
  overflow:hidden;
  background-image:linear-gradient(90deg,rgba(15,19,17,.88) 0%,rgba(15,19,17,.72) 52%,rgba(15,19,17,.52) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh-1);
}
.cat-hero__inner{
  position:relative;
  padding:clamp(28px,4vw,48px);
  max-width:760px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--c-accent);
  font-family:"Inter",var(--bs-body-font-family);
  font-weight:700;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:var(--c-accent);
  display:block;
}
.cat-hero h1{
  color:#fff;
  font-size:clamp(2rem,4vw,3.1rem);
  line-height:1.15;
  margin-bottom:14px;
}
.cat-hero p{
  color:#D8DCD4;
  font-size:15.5px;
  max-width:640px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}
.tag{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  color:var(--c-sub);
  background:rgba(255,106,43,.12);
  border-radius:var(--r-tag);
  padding:4px 10px;
  letter-spacing:.02em;
}
.hero-tags .tag{
  background:rgba(200,240,75,.14);
  color:var(--c-accent);
}

/* ============ 板块通用 ============ */
.section{padding:96px 0 0;}
.section:last-of-type{padding-bottom:96px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(1.8rem,3vw,2.6rem);
  line-height:1.2;
}
.section-head .sub{
  margin-top:10px;
  color:var(--t-2);
  font-size:15.5px;
  max-width:620px;
}
.section-head .link-more{
  flex:0 0 auto;
  font-size:14px;
  font-weight:700;
  color:var(--t-1);
  border-bottom:2px solid var(--c-accent);
  padding-bottom:3px;
  transition:color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.section-head .link-more:hover{color:var(--c-sub);border-color:var(--c-sub);}

/* ============ 两列大卡栅格 ============ */
.grid-2{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.big-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .35s cubic-bezier(.22,.61,.36,1),box-shadow .35s ease,border-color .25s ease;
}
.big-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(15,19,17,.2);
}
.big-card__media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:#E9E6DE;
}
.big-card__media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s cubic-bezier(.22,.61,.36,1);
}
.big-card:hover .big-card__media img{transform:scale(1.04);}
.big-card__badge{
  position:absolute;
  left:14px;top:14px;
  font-size:12px;
  font-weight:700;
  color:var(--c-sub);
  background:rgba(255,255,255,.94);
  border-radius:var(--r-tag);
  padding:4px 10px;
}
.big-card__body{
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
}
.big-card__body h3{
  font-size:1.25rem;
  line-height:1.4;
}
.big-card__body p{
  color:var(--t-2);
  font-size:15px;
  line-height:1.8;
}
.big-card__meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:2px;
}
.chip{
  font-size:12px;
  color:var(--t-2);
  background:var(--c-bg);
  border:1px solid var(--c-line);
  border-radius:var(--r-tag);
  padding:3px 9px;
}
.card-arrow{
  margin-top:auto;
  padding-top:12px;
  font-size:14px;
  font-weight:700;
  color:var(--t-1);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.card-arrow i{transition:transform .28s ease;font-size:12px;color:var(--c-sub);}
.big-card:hover .card-arrow i{transform:translateX(6px);}

/* ============ 赛事类型条 ============ */
.type-strip{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.type-cell{
  padding:32px 28px;
  border-right:1px solid var(--c-line);
}
.type-cell:last-child{border-right:none;}
.type-cell .ico{
  width:44px;height:44px;
  border-radius:12px;
  background:rgba(200,240,75,.18);
  color:#5C7A0B;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  margin-bottom:16px;
}
.type-cell h3{font-size:1.15rem;margin-bottom:8px;}
.type-cell p{color:var(--t-2);font-size:14.8px;}

/* ============ 流程 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  counter-reset:flow;
}
.flow-item{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 22px;
  transition:transform .3s cubic-bezier(.22,.61,.36,1),box-shadow .3s ease;
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--sh-1);}
.flow-item .num{
  font-family:"Inter",sans-serif;
  font-weight:200;
  font-size:2.4rem;
  line-height:1;
  color:var(--c-ink);
  letter-spacing:-.03em;
  display:block;
  margin-bottom:14px;
}
.flow-item .num::after{
  content:"";
  display:block;
  width:26px;height:3px;
  background:var(--c-accent);
  margin-top:12px;
  border-radius:3px;
}
.flow-item h3{font-size:1.05rem;margin-bottom:8px;}
.flow-item p{color:var(--t-2);font-size:14.5px;}

/* ============ 时间线 ============ */
.timeline{
  background:var(--c-ink);
  border-radius:var(--r-card);
  padding:clamp(30px,4vw,52px);
  color:#D6DBD2;
}
.timeline h2{
  color:#fff;
  font-size:clamp(1.6rem,2.6vw,2.2rem);
  margin-bottom:12px;
}
.timeline .lead{
  color:#9FA79C;
  max-width:660px;
  font-size:15.5px;
  margin-bottom:34px;
}
.tl-list{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.tl-item{
  border-top:2px solid rgba(200,240,75,.35);
  padding-top:18px;
}
.tl-item .when{
  font-family:"Inter",sans-serif;
  font-size:12.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--c-accent);
  font-weight:700;
}
.tl-item h3{color:#fff;font-size:1.05rem;margin:10px 0 8px;}
.tl-item p{color:#9FA79C;font-size:14.5px;line-height:1.8;}

/* ============ FAQ ============ */
.faq-list{
  display:grid;
  gap:14px;
  max-width:920px;
}
.faq-item{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border-color:rgba(15,19,17,.2);box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px;
  font-weight:700;
  font-size:16px;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:focus-visible{outline:2px solid var(--c-accent);outline-offset:-2px;}
.faq-item summary i{
  flex:0 0 auto;
  color:var(--c-sub);
  font-size:13px;
  margin-top:6px;
  transition:transform .25s ease;
}
.faq-item[open] summary i{transform:rotate(90deg);}
.faq-item .ans{
  padding:0 24px 22px;
  color:var(--t-2);
  font-size:15px;
  animation:fadeIn .25s ease;
}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--c-ink);
  border-radius:var(--r-card);
  padding:clamp(32px,4vw,56px);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;bottom:-80px;
  width:280px;height:280px;
  background:repeating-linear-gradient(135deg,rgba(200,240,75,.22) 0 8px,transparent 8px 18px);
  border-radius:50%;
  pointer-events:none;
}
.cta-band__text{position:relative;max-width:620px;}
.cta-band h2{color:#fff;font-size:clamp(1.6rem,2.6vw,2.2rem);margin-bottom:10px;}
.cta-band p{color:#9FA79C;font-size:15.5px;}
.cta-band__actions{position:relative;display:flex;gap:14px;flex-wrap:wrap;}

.btn-x{
  display:inline-flex;
  align-items:center;
  gap:9px;
  border:none;
  cursor:pointer;
  font-weight:800;
  font-size:15px;
  padding:14px 26px;
  border-radius:var(--r-pill);
  transition:background .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-accent{background:var(--c-accent);color:var(--c-ink);}
.btn-accent:hover{background:var(--c-ink);color:var(--c-accent);box-shadow:inset 0 0 0 1px var(--c-accent);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);}
.btn-ghost:hover{background:#fff;color:var(--c-ink);transform:translateY(-2px);}
.btn-line{background:transparent;color:var(--t-1);box-shadow:inset 0 0 0 1px rgba(15,19,17,.5);}
.btn-line:hover{background:var(--c-ink);color:#fff;transform:translateY(-2px);}
.btn-x:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);
  color:#9FA79C;
  margin-top:96px;
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand .brand-text{
  display:block;
  color:#fff;
  font-size:18px;
  margin-bottom:14px;
}
.footer-brand p{font-size:14.5px;line-height:1.85;max-width:330px;}
.site-footer h4{
  color:#fff;
  font-size:14px;
  letter-spacing:.06em;
  margin-bottom:16px;
}
.site-footer ul li{margin-bottom:10px;font-size:14.5px;}
.site-footer a{color:#9FA79C;transition:color .2s ease;}
.site-footer a:hover{color:var(--c-accent);}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#7C837A;
}

/* ============ 动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .6s ease,transform .6s cubic-bezier(.22,.61,.36,1);
}
.reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--side-w:200px;}
  .sidebar{padding:24px 16px 20px;}
  .sidebar__nav .nav-item{font-size:14.5px;padding-left:14px;}
}
@media (max-width:991px){
  .topbar{display:flex;}
  .sidebar{
    transform:translateX(-100%);
    transition:transform .32s cubic-bezier(.22,.61,.36,1);
    width:82vw;
    max-width:340px;
    padding-top:26px;
    z-index:1060;
  }
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;padding-top:64px;}
  .grid-2{grid-template-columns:1fr;}
  .type-strip{grid-template-columns:1fr;}
  .type-cell{border-right:none;border-bottom:1px solid var(--c-line);}
  .type-cell:last-child{border-bottom:none;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
  .tl-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding-top:72px;}
  .site-footer{margin-top:72px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .cat-hero{min-height:62vh;min-height:380px;}
  .section{padding-top:64px;}
  .section:last-of-type{padding-bottom:64px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .grid-2{gap:18px;}
  .flow{grid-template-columns:1fr;}
  .tl-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:30px 22px;}
  .cta-band__actions{width:100%;}
  .btn-x{width:100%;justify-content:center;}
}
@media (max-width:520px){
  .container-x{padding:0 18px;}
  .cat-hero h1{font-size:1.7rem;}
  .big-card__body{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --c-ink:#0F1311;
  --c-accent:#C8F04B;
  --c-sub:#FF6A2B;
  --c-bg:#F6F4EF;
  --c-card:#FFFFFF;
  --c-line:#E4E1D8;
  --t-1:#14181A;
  --t-2:#5A6058;
  --t-3:#8A8F86;
  --soft:#FBFAF6;
  --r-card:20px;
  --r-img:16px;
  --r-tag:6px;
  --r-btn:999px;
  --shadow-1:0 1px 2px rgba(15,19,17,.06),0 18px 44px -26px rgba(15,19,17,.30);
  --shadow-2:0 2px 4px rgba(15,19,17,.08),0 28px 60px -28px rgba(15,19,17,.42);
  --sidebar-w:232px;
  --bs-primary:#C8F04B;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#14181A;
  --bs-border-radius:16px;
  --bs-link-color:#14181A;
  --bs-link-hover-color:#0F1311;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--t-1);
  background-color:var(--c-bg);
  background-image:radial-gradient(rgba(15,19,17,.04) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--t-1);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease}
a:hover{color:var(--c-ink)}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:6px}
::selection{background:var(--c-accent);color:var(--c-ink)}

/* ============ 布局外壳 ============ */
.layout{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.content{flex:1 1 auto;width:100%}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 clamp(20px,4vw,64px)}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:90;
  height:64px;padding:0 18px;
  align-items:center;justify-content:space-between;
  background:var(--c-ink);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-bar .brand-name{font-size:16px}
.hamburger{
  width:42px;height:42px;border:1px solid rgba(255,255,255,.18);
  border-radius:12px;background:transparent;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;transition:border-color .2s ease,background .2s ease;
}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .25s ease,opacity .2s ease}
.hamburger:hover{border-color:var(--c-accent);background:rgba(200,240,75,.08)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.scrim{
  position:fixed;inset:0;z-index:80;
  background:rgba(15,19,17,.55);
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.scrim.open{opacity:1;pointer-events:auto}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;z-index:100;
  width:var(--sidebar-w);height:100vh;
  background:var(--c-ink);
  display:flex;flex-direction:column;
  padding:26px 16px 22px;
  overflow-y:auto;
  border-right:1px solid rgba(255,255,255,.06);
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:3px}
.brand{display:flex;align-items:center;gap:10px;padding:2px 8px 0;text-decoration:none}
.brand-mark{
  width:20px;height:20px;flex:none;border-radius:5px;
  background:var(--c-accent);
  box-shadow:3px 3px 0 rgba(255,255,255,.16);
}
.brand-name{
  color:#fff;font-weight:900;font-size:16px;letter-spacing:-.01em;
  line-height:1.2;
}
.sidebar__nav{display:flex;flex-direction:column;gap:2px;margin-top:26px}
.nav-item{
  position:relative;display:block;
  padding:12px 14px 12px 18px;
  font-size:15px;font-weight:500;color:#B9C0B6;
  border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;
  width:3px;height:0;border-radius:2px;
  background:var(--c-accent);
  transform:translateY(-50%);
  transition:height .26s cubic-bezier(.22,.61,.36,1);
}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.045)}
.nav-item.active{color:#fff;background:rgba(200,240,75,.06)}
.nav-item.active::before{height:20px}
.sidebar__divider{height:1px;background:rgba(255,255,255,.09);margin:22px 6px}
.sidebar__spacer{flex:1 1 auto;min-height:28px}
.sidebar__cta{
  display:block;text-align:center;
  background:var(--c-accent);color:var(--c-ink);
  font-weight:700;font-size:14.5px;
  padding:12px 14px;border-radius:var(--r-btn);
  border:1px solid var(--c-accent);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.sidebar__cta:hover{background:transparent;color:var(--c-accent);transform:translateY(-2px)}
.sidebar__meta{margin-top:16px;padding:0 8px;display:flex;flex-direction:column;gap:6px;font-size:12px;color:#8A8F86;letter-spacing:.02em}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:34px 0 22px;
  font-size:13px;color:var(--t-3);
}
.crumbs a{color:var(--t-3)}
.crumbs a:hover{color:var(--c-ink);border-bottom:2px solid var(--c-accent)}
.crumb-sep{color:#C6C2B7}
.crumb-now{color:var(--t-2)}

/* ============ 文章标题区 ============ */
.article-head{
  border-top:3px solid var(--c-ink);
  padding-top:30px;
  margin-bottom:8px;
}
.kicker-tag{
  display:inline-block;
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--c-sub);
  background:rgba(255,106,43,.08);
  border-radius:var(--r-tag);
  padding:4px 10px;
  margin-bottom:18px;
}
.article-title{
  font-size:clamp(1.9rem,4vw,3rem);
  font-weight:900;
  line-height:1.3;
  letter-spacing:-.02em;
  margin:0 0 20px;
  color:var(--c-ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding-bottom:22px;
  font-size:13.5px;color:var(--t-3);
  border-bottom:1px solid var(--c-line);
  font-variant-numeric:tabular-nums;
}
.article-meta .meta-date{color:var(--c-sub);font-weight:600;letter-spacing:.02em}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#CFCBC0}

/* ============ 正文 ============ */
.article-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr) 260px;
  gap:clamp(28px,4vw,56px);
  padding:44px 0 20px;
  align-items:start;
}
.article-body{
  max-width:760px;
  font-size:16.5px;
  line-height:1.9;
  color:#22282A;
  min-width:0;
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.7em}
.article-body h2{
  position:relative;
  font-size:clamp(1.35rem,2.4vw,1.7rem);
  font-weight:800;
  line-height:1.45;
  letter-spacing:-.01em;
  color:var(--c-ink);
  margin:2.4em 0 .9em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;
  width:4px;border-radius:2px;background:var(--c-accent);
}
.article-body h3{
  font-size:1.16rem;font-weight:700;color:var(--c-ink);
  margin:2em 0 .7em;
}
.article-body h4{font-size:1rem;font-weight:700;color:var(--c-ink);margin:1.6em 0 .6em}
.article-body ul,.article-body ol{margin:0 0 1.7em;padding-left:1.3em}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.55em}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:8px;height:8px;border-radius:2px;background:var(--c-accent);
}
.article-body ol li{margin-bottom:.55em}
.article-body blockquote{
  margin:1.8em 0;padding:16px 22px;
  border-left:3px solid var(--c-sub);
  background:var(--soft);
  border-radius:0 12px 12px 0;
  color:#3C4340;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:var(--r-img);
  margin:1.6em 0;
  width:100%;height:auto;
}
.article-body figure{margin:1.8em 0}
.article-body figcaption{
  font-size:13px;color:var(--t-3);text-align:center;
  margin-top:8px;line-height:1.7;
}
.article-body a{
  color:#1B211D;
  border-bottom:2px solid var(--c-accent);
  padding-bottom:1px;
}
.article-body a:hover{background:rgba(200,240,75,.28)}
.article-body strong{font-weight:700;color:var(--c-ink)}
.article-body table{
  width:100%;display:block;overflow-x:auto;
  border-collapse:collapse;margin:1.8em 0;font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--c-line);padding:10px 14px;text-align:left;
}
.article-body th{background:var(--soft);font-weight:700;color:var(--c-ink)}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2.2em 0}

/* 侧边索引 */
.side-index{
  position:sticky;top:32px;
  border:1px solid var(--c-line);
  background:var(--c-card);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--shadow-1);
}
.side-index h2{
  font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--t-3);margin:0 0 16px;text-transform:uppercase;
}
.side-index ul{list-style:none;margin:0;padding:0}
.side-index li{margin-bottom:10px}
.side-index a{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--t-2);line-height:1.6;
}
.side-index a::before{
  content:"";width:6px;height:6px;flex:none;border-radius:2px;
  background:#D6D2C7;transition:background .2s ease;
}
.side-index a:hover{color:var(--c-ink)}
.side-index a:hover::before{background:var(--c-accent)}
.side-index__note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);
  font-size:12.5px;color:var(--t-3);line-height:1.75;
}

/* ============ 空态 ============ */
.article-empty{
  max-width:640px;
  margin:0 auto;
  text-align:center;
  padding:72px 28px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
}
.empty-icon{
  width:52px;height:52px;margin:0 auto 20px;border-radius:14px;
  background:var(--c-accent);
  box-shadow:5px 5px 0 rgba(15,19,17,.85);
}
.article-empty h2{font-size:1.4rem;font-weight:800;color:var(--c-ink);margin:0 0 12px}
.article-empty p{color:var(--t-2);margin:0 0 26px;font-size:15.5px}

/* ============ 按钮 ============ */
.btn-main,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  padding:13px 28px;border-radius:var(--r-btn);
  cursor:pointer;text-align:center;
  transition:transform .2s cubic-bezier(.22,.61,.36,1),box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-main{
  background:var(--c-accent);color:var(--c-ink);
  border:1px solid var(--c-ink);
  box-shadow:3px 3px 0 var(--c-ink);
}
.btn-main:hover{
  background:var(--c-ink);color:var(--c-accent);
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 rgba(15,19,17,.85);
}
.btn-line{
  background:transparent;color:var(--c-ink);
  border:1px solid var(--c-ink);
  box-shadow:3px 3px 0 rgba(15,19,17,.14);
}
.btn-line:hover{
  background:var(--c-ink);color:var(--c-bg);
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 rgba(15,19,17,.85);
}
.btn-main:active,.btn-line:active{transform:translate(1px,1px);box-shadow:1px 1px 0 rgba(15,19,17,.7)}

/* ============ 相关推荐 ============ */
.related{padding:64px 0 0}
.sec-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px;margin-bottom:28px;border-top:1px solid var(--c-line);padding-top:28px;
}
.sec-head h2{
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  font-weight:800;letter-spacing:-.01em;color:var(--c-ink);margin:0;
}
.sec-head span{font-size:13px;color:var(--t-3);letter-spacing:.06em}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rcard{
  display:flex;flex-direction:column;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .3s cubic-bezier(.22,.61,.36,1),box-shadow .3s ease,border-color .3s ease;
}
.rcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(15,19,17,.22)}
.rcard-img{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E9E6DD}
.rcard-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,.61,.36,1)}
.rcard:hover .rcard-img img{transform:scale(1.04)}
.rcard-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rcard-tag{
  align-self:flex-start;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  color:var(--c-sub);background:rgba(255,106,43,.08);
  border-radius:var(--r-tag);padding:3px 9px;
}
.rcard h3{font-size:1.02rem;font-weight:700;line-height:1.55;color:var(--c-ink);margin:0}
.rcard p{font-size:14px;line-height:1.75;color:var(--t-2);margin:0}
.rcard-more{
  margin-top:auto;padding-top:10px;
  font-size:13.5px;font-weight:700;color:var(--c-ink);
  display:inline-flex;align-items:center;gap:6px;
}
.rcard-more::after{content:"→";transition:transform .25s ease}
.rcard:hover .rcard-more::after{transform:translateX(4px)}

/* ============ 返回行 ============ */
.back-row{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  padding:52px 0 0;
}

/* ============ CTA 条 ============ */
.cta-band{
  margin-top:80px;
  background:var(--c-ink);
  border-radius:var(--r-card);
  padding:clamp(30px,4vw,48px) clamp(26px,4vw,52px);
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;
  width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,240,75,.18),transparent 68%);
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:clamp(1.3rem,2.4vw,1.8rem);font-weight:800;margin:0 0 8px;letter-spacing:-.01em}
.cta-band p{color:#B9C0B6;margin:0;font-size:15px;max-width:520px}
.cta-band .btn-main{border-color:var(--c-accent)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);
  color:#B9C0B6;
  padding:72px 0 26px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.1fr;
  gap:40px;
}
.footer-brand .brand-text{
  display:block;color:#fff;font-weight:900;font-size:19px;
  letter-spacing:-.01em;margin-bottom:14px;
}
.footer-brand p{font-size:14px;line-height:1.85;color:#9AA096;margin:0;max-width:340px}
.site-footer h4{
  color:#fff;font-size:13.5px;font-weight:700;letter-spacing:.14em;
  margin:0 0 16px;
}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{font-size:14px;margin-bottom:11px;color:#9AA096;line-height:1.7}
.site-footer a{color:#B9C0B6;border-bottom:1px solid transparent}
.site-footer a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:12.5px;color:#8A8F86;
}
.site-footer .wrap{max-width:1180px}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sidebar-w:200px}
  .article-shell{grid-template-columns:minmax(0,1fr) 232px;gap:32px}
}
@media (max-width:991px){
  .mobile-bar{display:flex}
  .sidebar{
    width:82vw;max-width:320px;padding-top:76px;
    transform:translateX(-100%);
    transition:transform .32s cubic-bezier(.22,.61,.36,1);
    box-shadow:24px 0 60px -30px rgba(0,0,0,.6);
  }
  .sidebar.open{transform:translateX(0)}
  .layout{margin-left:0}
  .article-shell{grid-template-columns:minmax(0,1fr);gap:0}
  .side-index{position:static;order:-1;margin-bottom:28px}
  .sidebar__spacer{min-height:14px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .related-grid{grid-template-columns:1fr;gap:20px}
  .related{padding-top:52px}
  .site-footer{padding:56px 0 22px;margin-top:64px}
  .article-title{font-size:clamp(1.6rem,6.4vw,2.1rem)}
  .crumbs{padding:24px 0 18px}
  .crumbs .crumb-now{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .cta-band{margin-top:60px;padding:28px 24px}
  .back-row .btn-main,.back-row .btn-line{flex:1 1 100%}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .article-body{font-size:15.5px;line-height:1.88}
  .article-meta{gap:9px;font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --c-ink:#0F1311;
  --c-accent:#C8F04B;
  --c-sub:#FF6A2B;
  --c-bg:#F6F4EF;
  --c-card:#FFFFFF;
  --c-line:#E4E1D8;
  --t-main:#14181A;
  --t-sub:#5A6058;
  --t-mute:#8A8F86;
  --r-card:20px;
  --r-img:16px;
  --r-tag:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,19,17,.06), 0 18px 44px -26px rgba(15,19,17,.30);
  --sh-2:0 2px 6px rgba(15,19,17,.08), 0 26px 58px -24px rgba(15,19,17,.40);
  --sidebar-w:232px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-primary:#C8F04B;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#14181A;
  --bs-border-radius:20px;
  --bs-body-font-family:'Noto Sans SC','Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --bs-link-color:#14181A;
  --bs-link-hover-color:#0F1311;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-main);
  font-family:'Noto Sans SC','Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-ink);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.01em;}
p{margin:0 0 1.6em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px;}

/* ---------- 布局骨架 ---------- */
.site-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.site-main > main{flex:1 1 auto;}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding-left:clamp(20px,4vw,64px);padding-right:clamp(20px,4vw,64px);}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--ink{background:var(--c-ink);color:#E7EAE4;}
.section--ink h1,.section--ink h2,.section--ink h3{color:#F4F6F1;}
.section--paper{background:var(--c-bg);}
.section--white{background:var(--c-card);}

/* ---------- 侧栏导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-ink);color:#B9C0B6;
  display:flex;flex-direction:column;
  padding:28px 0 24px;z-index:1030;
}
.sidebar__brand{
  display:flex;align-items:center;gap:10px;
  padding:0 22px 22px;border-bottom:1px solid rgba(255,255,255,.08);
}
.sidebar__mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:var(--c-accent);color:var(--c-ink);
  display:grid;place-items:center;
  font-family:'Inter',sans-serif;font-weight:800;font-size:14px;letter-spacing:-.02em;
}
.brand-text{
  font-weight:900;font-size:16px;letter-spacing:-.01em;color:#F4F6F1;line-height:1.3;
}
.sidebar__nav{display:flex;flex-direction:column;gap:2px;padding:20px 0;flex:1 1 auto;overflow-y:auto;}
.nav-item{
  position:relative;display:block;
  padding:11px 22px 11px 24px;
  font-size:14.5px;color:#B9C0B6;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--c-accent);border-radius:0 3px 3px 0;
  transition:height .24s var(--ease);
}
.nav-item:hover{color:#FFFFFF;background:rgba(255,255,255,.03);}
.nav-item.active{color:#FFFFFF;background:rgba(200,240,75,.06);font-weight:700;}
.nav-item.active::before{height:22px;}
.sidebar__foot{padding:20px 22px 0;border-top:1px solid rgba(255,255,255,.08);}
.sidebar__foot p{font-size:12.5px;color:#8A8F86;line-height:1.7;margin:12px 0 0;}
.sidebar__foot p a{color:#B9C0B6;}
.sidebar__foot p a:hover{color:var(--c-accent);}

/* ---------- 移动顶栏 ---------- */
.topbar-mobile{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:1040;
  background:var(--c-ink);align-items:center;justify-content:space-between;
  padding:0 18px;
}
.topbar-mobile .brand-text{font-size:15.5px;}
.hamburger{
  width:42px;height:42px;border:1px solid rgba(255,255,255,.16);border-radius:12px;
  background:transparent;display:grid;place-items:center;gap:4px;padding:0;
}
.hamburger span{display:block;width:18px;height:2px;background:#F4F6F1;border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.overlay{
  position:fixed;inset:0;background:rgba(15,19,17,.55);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s;z-index:1025;
}
.overlay.show{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.btn-x i{font-size:12px;}
.btn-accent{background:var(--c-accent);color:var(--c-ink);}
.btn-accent:hover{background:var(--c-ink);color:var(--c-accent);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:rgba(15,19,17,.45);}
.btn-ghost:hover{background:var(--c-ink);color:#F4F6F1;border-color:var(--c-ink);transform:translateY(-2px);}
.btn-ghost--light{color:#F4F6F1;border-color:rgba(244,246,241,.42);}
.btn-ghost--light:hover{background:var(--c-accent);color:var(--c-ink);border-color:var(--c-accent);}
.btn-line{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14.5px;
  color:var(--c-ink);padding-bottom:4px;position:relative;
}
.btn-line::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:24px;background:var(--c-accent);
  transition:width .3s var(--ease);
}
.btn-line:hover::after{width:100%;}

/* ---------- 眉标 / 标签 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--t-mute);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);display:block;}
.section--ink .eyebrow{color:#9AA697;}
.tag{
  display:inline-block;padding:3px 9px;border-radius:var(--r-tag);
  font-size:12px;font-weight:700;letter-spacing:.02em;
  color:var(--c-sub);background:rgba(255,106,43,.10);
}
.tag--muted{color:var(--t-sub);background:rgba(15,19,17,.05);}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{border-bottom:1px solid var(--c-line);background:var(--c-bg);}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--t-mute);padding:16px 0;margin:0;}
.crumbs a{color:var(--t-sub);}
.crumbs a:hover{color:var(--c-accent);}
.crumbs .sep{color:#C6C3B8;}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;overflow:hidden;background:var(--c-ink);
  min-height:320px;display:flex;align-items:flex-end;
}
.hero-cat__bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(15,19,17,.78),rgba(15,19,17,.72)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-cat__inner{position:relative;z-index:2;padding:72px 0 56px;width:100%;}
.hero-cat h1{
  color:#F6F8F3;
  font-size:clamp(2.2rem,4.6vw,3.4rem);
  font-weight:900;letter-spacing:-.02em;line-height:1.18;
  margin:0 0 16px;
}
.hero-cat__lede{
  color:#C9D0C4;font-size:17px;line-height:1.8;max-width:720px;margin:0 0 26px;
}
.hero-cat__meta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.hero-cat__meta span{
  font-size:12.5px;color:#A8B2A1;border:1px solid rgba(255,255,255,.16);
  padding:6px 14px;border-radius:var(--r-pill);
}

/* ---------- 通用板块头 ---------- */
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:800;line-height:1.25;margin:0 0 14px;}
.sec-head p{color:var(--t-sub);font-size:16px;margin:0;}

/* ---------- 图片墙 ---------- */
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.wall-card{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-card);border:1px solid var(--c-line);
  background:var(--c-ink);aspect-ratio:3/4;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .3s var(--ease);
}
.wall-card img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s var(--ease),opacity .4s var(--ease);
  opacity:.92;
}
.wall-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,19,17,.22);}
.wall-card:hover img{transform:scale(1.04);opacity:1;}
.wall-card__shade{
  position:absolute;inset:auto 0 0 0;height:62%;
  background:linear-gradient(180deg,rgba(15,19,17,0),rgba(15,19,17,.86));
}
.wall-card__info{
  position:absolute;left:0;right:0;bottom:0;padding:20px 20px 22px;
  transform:translateY(14px);opacity:0;
  transition:transform .35s var(--ease),opacity .35s var(--ease);
}
.wall-card:hover .wall-card__info{transform:translateY(0);opacity:1;}
.wall-card__info h3{
  color:#F6F8F3;font-size:17px;font-weight:800;line-height:1.45;margin:8px 0 6px;letter-spacing:-.005em;
}
.wall-card__info p{color:#BEC7B8;font-size:13.5px;line-height:1.7;margin:0;}
.wall-card__num{
  position:absolute;top:18px;left:18px;
  font-family:'Inter',sans-serif;font-weight:200;font-size:32px;line-height:1;
  color:rgba(246,248,243,.72);letter-spacing:-.03em;
}

/* ---------- 特性三列 ---------- */
.feat{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
}
.feat__item{padding:34px 30px;border-right:1px solid var(--c-line);}
.feat__item:last-child{border-right:0;}
.feat__ico{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(200,240,75,.22);color:var(--c-ink);font-size:16px;margin-bottom:18px;
}
.feat__item h3{font-size:17px;font-weight:800;margin:0 0 10px;}
.feat__item p{color:var(--t-sub);font-size:14.5px;line-height:1.8;margin:0;}

/* ---------- 流程时间线 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow__step{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 24px;position:relative;transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.flow__step:hover{transform:translateY(-4px);box-shadow:var(--sh-1);}
.flow__idx{
  font-family:'Inter',sans-serif;font-weight:200;font-size:34px;line-height:1;
  color:var(--c-ink);letter-spacing:-.03em;display:block;margin-bottom:14px;
}
.flow__step h3{font-size:16px;font-weight:800;margin:0 0 8px;}
.flow__step p{color:var(--t-sub);font-size:14px;line-height:1.75;margin:0;}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:36px 0;border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12);
}
.stats__num{
  font-family:'Inter',sans-serif;font-weight:200;font-size:clamp(2rem,4vw,3rem);
  line-height:1;color:var(--c-accent);letter-spacing:-.03em;display:block;margin-bottom:10px;
}
.stats__label{font-size:13.5px;color:#A8B2A1;letter-spacing:.02em;}

/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.split__media{position:relative;}
.split__media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img);position:relative;z-index:2;}
.split__blob{
  position:absolute;right:-18px;bottom:-18px;width:52%;height:56%;
  background:var(--c-accent);border-radius:var(--r-img);z-index:1;
}
.split h2{font-size:clamp(1.6rem,2.6vw,2.2rem);font-weight:800;line-height:1.3;margin:0 0 18px;}
.split p{color:var(--t-sub);font-size:15.5px;margin:0 0 18px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item.open{border-color:rgba(15,19,17,.24);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 24px;font-size:16.5px;font-weight:700;color:var(--c-ink);cursor:pointer;
}
.faq-q i{
  flex:0 0 auto;font-size:12px;color:var(--c-ink);
  transition:transform .25s var(--ease);
}
.faq-item.open .faq-q i{transform:rotate(90deg);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .25s var(--ease);}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{padding:0 24px 24px;margin:0;color:var(--t-sub);font-size:15px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-lite{
  background:var(--c-bg);border:2px solid var(--c-accent);border-radius:24px;
  padding:44px 44px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-lite h2{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:800;margin:0 0 10px;}
.cta-lite p{color:var(--t-sub);margin:0;font-size:15.5px;max-width:600px;}
.cta-lite__actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#A8B2A1;padding-top:72px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .brand-text{display:block;margin-bottom:14px;font-size:17px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#98A192;margin:0;max-width:320px;}
.site-footer h4{color:#F4F6F1;font-size:14px;font-weight:800;letter-spacing:.04em;margin:0 0 16px;}
.site-footer li{font-size:14px;line-height:2.1;color:#98A192;}
.site-footer li a{color:#98A192;}
.site-footer li a:hover{color:var(--c-accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 30px;font-size:13px;color:#7C8579;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sidebar-w:200px;}
  .wall{gap:20px;}
  .split{gap:40px;}
}
@media (max-width:991.98px){
  .sidebar{
    top:0;bottom:0;width:82vw;max-width:340px;height:100vh;
    transform:translateX(-100%);transition:transform .28s var(--ease);
    box-shadow:0 0 60px rgba(0,0,0,.4);
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar__nav{padding-top:12px;}
  .nav-item{
    padding:0 22px;height:52px;display:flex;align-items:center;
    border-bottom:1px solid rgba(255,255,255,.08);font-size:15px;
  }
  .nav-item::before{display:none;}
  .nav-item.active{background:rgba(200,240,75,.10);}
  .topbar-mobile{display:flex;}
  .site-main{margin-left:0;padding-top:64px;}
  .section{padding:64px 0;}
  .section--tight{padding:52px 0;}
  .feat{grid-template-columns:1fr;}
  .feat__item{border-right:0;border-bottom:1px solid var(--c-line);}
  .feat__item:last-child{border-bottom:0;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;}
  .split__blob{right:auto;left:-12px;bottom:-12px;width:44%;height:46%;}
  .stats{grid-template-columns:repeat(2,1fr);gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .wall-card__info{transform:translateY(0);opacity:1;}
  .wall-card img{opacity:1;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .section{padding:56px 0;}
  .hero-cat{min-height:280px;}
  .hero-cat__inner{padding:56px 0 44px;}
  .hero-cat__lede{font-size:15.5px;}
  .wall{grid-template-columns:repeat(2,1fr);gap:16px;}
  .flow{grid-template-columns:1fr;}
  .cta-lite{padding:32px 26px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .wall{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;gap:22px;}
  .sec-head{margin-bottom:32px;}
  .crumbs{font-size:12.5px;}
  .btn-x{padding:12px 20px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --c-ink:#0F1311;
  --c-ink-soft:#1A201C;
  --c-accent:#C8F04B;
  --c-sub:#FF6A2B;
  --c-bg:#F6F4EF;
  --c-card:#FFFFFF;
  --c-line:#E4E1D8;
  --t-main:#14181A;
  --t-sub:#5A6058;
  --t-mute:#8A8F86;
  --r-card:20px;
  --r-img:16px;
  --r-btn:999px;
  --r-tag:6px;
  --sh-1:0 1px 2px rgba(15,19,17,.06),0 18px 44px -26px rgba(15,19,17,.30);
  --sh-2:0 2px 6px rgba(15,19,17,.08),0 26px 56px -28px rgba(15,19,17,.38);
  --sidebar-w:232px;
  --bs-primary:#0F1311;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#14181A;
  --bs-border-color:#E4E1D8;
  --bs-border-radius:20px;
  --bs-link-color:#14181A;
  --bs-link-hover-color:#0F1311;
  --bs-body-font-family:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --bs-font-sans-serif:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
@media (min-width:992px) and (max-width:1199px){
  :root{--sidebar-w:200px;}
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--c-bg);
  color:var(--t-main);
  font-family:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.22;letter-spacing:-0.01em;}
p{margin:0;}
button,input{font-family:inherit;font-size:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
.no-scroll{overflow:hidden;}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- 容器 ---------- */
.wrap{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding-left:clamp(20px,4vw,64px);
  padding-right:clamp(20px,4vw,64px);
}
.section{padding-top:96px;}
.section--tight{padding-top:64px;}
@media (max-width:767px){
  body{font-size:15.2px;}
  .section{padding-top:64px;}
}

/* ---------- 左侧竖向导航 ---------- */
.sidebar{display:none;}
@media (min-width:992px){
  body{padding-left:var(--sidebar-w);}
  .sidebar{
    display:flex;
    flex-direction:column;
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--sidebar-w);
    background:var(--c-ink);
    padding:26px 18px 22px;
    overflow-y:auto;
    z-index:1040;
  }
}
.sidebar__brand{display:flex;align-items:center;gap:11px;color:#fff;}
.brand-mark{
  flex:0 0 auto;
  width:38px;height:38px;
  border-radius:12px;
  background:var(--c-accent);
  color:var(--c-ink);
  display:grid;place-items:center;
  font-family:"Inter",sans-serif;
  font-weight:900;font-size:13px;
  letter-spacing:-0.02em;
}
.brand-text{
  font-size:16.5px;
  font-weight:900;
  letter-spacing:-0.01em;
  line-height:1.2;
}
.sidebar__nav{display:flex;flex-direction:column;gap:2px;margin-top:30px;}
.nav-item{
  position:relative;
  display:block;
  padding:11px 12px 11px 15px;
  border-radius:10px;
  color:#B9C0B6;
  font-size:14.5px;
  line-height:1.5;
  transition:color .22s ease,background .22s ease;
}
.nav-item::before{
  content:"";
  position:absolute;left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:0;
  background:var(--c-accent);
  border-radius:2px;
  transition:height .25s cubic-bezier(.22,.61,.36,1);
}
.nav-item:hover{color:#fff;}
.nav-item.active{color:#fff;background:rgba(200,240,75,.06);}
.nav-item.active::before{height:22px;}
.sidebar__divider{height:1px;background:rgba(255,255,255,.09);margin:24px 0;}
.sidebar__foot{margin-top:auto;color:#8A8F86;font-size:13px;line-height:1.7;}
.sidebar__foot p{margin-bottom:14px;}
.sidebar__foot .btn-acc{width:100%;}
.sidebar__contact{margin-top:16px;display:flex;flex-direction:column;gap:6px;font-size:12.5px;color:#8A8F86;}
.sidebar__contact span{display:flex;align-items:center;gap:8px;}
.sidebar__contact i{color:var(--c-accent);font-size:11px;}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:64px;
  background:var(--c-ink);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 18px;
  z-index:1050;
}
.topbar .brand-text{font-size:15.5px;}
.topbar .brand-mark{width:34px;height:34px;border-radius:10px;font-size:12px;}
.hamburger{
  width:42px;height:42px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:12px;
  background:transparent;
  color:#fff;
  display:grid;place-items:center;
  cursor:pointer;
  transition:background .22s ease,border-color .22s ease;
}
.hamburger:hover{background:rgba(200,240,75,.12);border-color:var(--c-accent);}
@media (min-width:992px){.topbar{display:none;}}
@media (max-width:991px){
  body{padding-top:64px;}
}
.drawer{
  position:fixed;top:0;left:0;bottom:0;
  width:82vw;max-width:340px;
  background:var(--c-ink);
  padding:22px 16px;
  transform:translateX(-100%);
  transition:transform .28s cubic-bezier(.22,.61,.36,1);
  z-index:1060;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(15,19,17,.55);
  opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;
  z-index:1055;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer__nav{display:flex;flex-direction:column;margin-top:26px;}
.drawer .nav-item{
  height:52px;
  display:flex;align-items:center;
  border-radius:0;
  border-bottom:1px solid rgba(255,255,255,.08);
  padding-left:15px;
}
.drawer .nav-item.active{background:rgba(200,240,75,.08);}
.drawer__foot{margin-top:28px;color:#8A8F86;font-size:13px;}

/* ---------- 按钮 ---------- */
.btn-acc,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  font-size:14.5px;font-weight:700;
  line-height:1;
  cursor:pointer;
  border:1px solid transparent;
  transition:background .24s ease,color .24s ease,border-color .24s ease,transform .24s ease;
}
.btn-acc{background:var(--c-accent);color:var(--c-ink);border-color:var(--c-accent);}
.btn-acc:hover{background:var(--c-ink);color:var(--c-accent);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--t-main);border-color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-ink);color:#fff;transform:translateY(-2px);}
.btn-ghost--light{color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost--light:hover{background:#fff;color:var(--c-ink);border-color:#fff;}
.btn-block{display:flex;width:100%;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  background:var(--c-ink);
  color:#fff;
  overflow:hidden;
  padding:clamp(58px,8vw,100px) 0 clamp(40px,5vw,60px);
}
.cat-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  opacity:.55;
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,19,17,.94) 0%,rgba(15,19,17,.76) 52%,rgba(15,19,17,.58) 100%);
}
.cat-hero__inner{position:relative;z-index:2;}
.eyebrow{
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  font-weight:700;
  color:var(--c-accent);
  margin-bottom:16px;
}
.eyebrow::before{content:"— ";}
.cat-hero h1{
  font-size:clamp(2.1rem,4.6vw,3.4rem);
  font-weight:900;
  letter-spacing:-0.02em;
  max-width:840px;
}
.cat-hero .lede{
  margin-top:20px;
  max-width:660px;
  font-size:16.5px;
  color:#D5DACF;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
  margin-top:46px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.14);
  max-width:760px;
}
.hero-stats .num{
  display:block;
  font-family:"Inter",sans-serif;
  font-weight:200;
  font-size:clamp(2rem,3.4vw,2.6rem);
  line-height:1;
  color:var(--c-accent);
  letter-spacing:-0.03em;
}
.hero-stats .cap{display:block;margin-top:8px;font-size:13px;color:#B9C0B6;}
@media (max-width:599px){
  .hero-stats{grid-template-columns:1fr;gap:16px;}
}

/* ---------- 卖点三列 ---------- */
.feature-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.feature{
  padding:30px 28px;
  border-right:1px solid var(--c-line);
}
.feature:last-child{border-right:0;}
.feature .fi{
  width:42px;height:42px;
  border-radius:12px;
  background:rgba(200,240,75,.18);
  color:var(--c-ink);
  display:grid;place-items:center;
  font-size:16px;
  margin-bottom:18px;
}
.feature h3{font-size:1.25rem;font-weight:800;margin-bottom:10px;}
.feature p{font-size:14.8px;color:var(--t-sub);line-height:1.8;}
@media (max-width:899px){
  .feature-row{grid-template-columns:1fr;}
  .feature{border-right:0;border-bottom:1px solid var(--c-line);}
  .feature:last-child{border-bottom:0;}
}

/* ---------- 板块标题 ---------- */
.section-head{max-width:720px;margin-bottom:38px;}
.section-head h2{
  font-size:clamp(1.8rem,3vw,2.6rem);
  font-weight:800;
  letter-spacing:-0.02em;
}
.section-head p{margin-top:14px;color:var(--t-sub);font-size:15.5px;}
.section-head--tight{margin-bottom:26px;}

/* ---------- 索引 + 长列表 ---------- */
.panel-grid{
  display:grid;
  grid-template-columns:300px minmax(0,1fr);
  gap:32px;
  align-items:start;
}
@media (max-width:991px){
  .panel-grid{grid-template-columns:1fr;gap:24px;}
}
.index-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px 22px;
  box-shadow:var(--sh-1);
}
@media (min-width:992px){
  .index-card{position:sticky;top:24px;}
}
.index-title{
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  font-weight:700;
  color:var(--t-mute);
  margin-bottom:16px;
}
.index-list{display:flex;flex-direction:column;}
.index-item{
  position:relative;
  display:block;
  padding:10px 10px 10px 14px;
  font-size:14.5px;
  color:var(--t-sub);
  border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.index-item::before{
  content:"";
  position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;
  background:var(--c-accent);
  border-radius:2px;
  transition:height .24s ease;
}
.index-item:hover{color:var(--t-main);background:#F6F4EF;}
.index-item.is-active{color:var(--t-main);font-weight:700;background:#F6F4EF;}
.index-item.is-active::before{height:18px;}
.index-note{
  margin-top:18px;
  padding-top:18px;
  border-top:1px dashed var(--c-line);
  font-size:13.5px;
  color:var(--t-mute);
  line-height:1.75;
}
.index-card .btn-acc{margin-top:20px;}

.feed{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.feed-item{
  display:grid;
  grid-template-columns:66px minmax(0,1fr) 30px;
  gap:18px;
  align-items:center;
  padding:22px 26px;
  border-bottom:1px solid var(--c-line);
  transition:background .22s ease;
}
.feed-item:last-child{border-bottom:0;}
.feed-item:hover{background:#F6F4EF;}
.feed-num{
  font-family:"Inter",sans-serif;
  font-weight:200;
  font-size:28px;
  line-height:1;
  color:var(--t-mute);
  letter-spacing:-0.03em;
  transition:color .22s ease;
}
.feed-item:hover .feed-num{color:var(--c-sub);}
.feed-item h3{font-size:1.25rem;font-weight:800;margin-bottom:6px;}
.feed-item p{font-size:14.8px;color:var(--t-sub);line-height:1.78;}
.feed-arrow{
  color:var(--t-mute);
  font-size:14px;
  transition:transform .24s ease,color .24s ease;
}
.feed-item:hover .feed-arrow{transform:translateX(5px);color:var(--c-ink);}
@media (max-width:599px){
  .feed-item{grid-template-columns:1fr;gap:8px;padding:20px;}
  .feed-num{font-size:20px;}
  .feed-arrow{display:none;}
}

/* ---------- 场景卡 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
@media (max-width:767px){.scene-grid{grid-template-columns:1fr;}}
.scene-card{
  display:flex;
  gap:20px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-1);
  transition:transform .6s cubic-bezier(.22,.61,.36,1),box-shadow .3s ease,border-color .3s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,19,17,.2);}
.scene-card__img{
  flex:0 0 132px;
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:4/3;
  background:#EDEAE1;
}
.scene-card__img img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s cubic-bezier(.22,.61,.36,1);
}
.scene-card:hover .scene-card__img img{transform:scale(1.04);}
.scene-card h3{font-size:1.25rem;font-weight:800;margin-bottom:8px;}
.scene-card p{font-size:14.6px;color:var(--t-sub);line-height:1.78;}
@media (max-width:520px){
  .scene-card{flex-direction:column;}
  .scene-card__img{flex:none;width:100%;aspect-ratio:16/10;}
}

/* ---------- 流程深色区 ---------- */
.flow-band{
  background:var(--c-ink);
  color:#fff;
  padding:92px 0;
  margin-top:96px;
}
.flow-band .section-head h2{color:#fff;}
.flow-band .section-head p{color:#B9C0B6;}
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:26px;
}
.flow-step{
  position:relative;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.16);
}
.flow-step .step-num{
  display:inline-block;
  font-family:"Inter",sans-serif;
  font-weight:200;
  font-size:15px;
  letter-spacing:.14em;
  color:var(--c-accent);
  margin-bottom:12px;
}
.flow-step h3{font-size:1.15rem;font-weight:800;margin-bottom:10px;color:#fff;}
.flow-step p{font-size:14.4px;color:#B9C0B6;line-height:1.78;}
@media (max-width:991px){
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:599px){
  .flow-grid{grid-template-columns:1fr;}
  .flow-band{padding:64px 0;margin-top:64px;}
}

/* ---------- FAQ ---------- */
.faq .accordion-item{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card)!important;
  margin-bottom:14px;
  overflow:hidden;
}
.faq .accordion-button{
  background:var(--c-card);
  color:var(--t-main);
  font-weight:700;
  font-size:16px;
  padding:20px 24px;
  box-shadow:none;
  border:0;
  line-height:1.6;
}
.faq .accordion-button:not(.collapsed){
  background:#F6F4EF;
  color:var(--t-main);
  box-shadow:none;
}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-accent);outline-offset:-2px;}
.faq .accordion-button::after{
  content:"＋";
  background-image:none!important;
  font-size:18px;
  font-weight:400;
  color:var(--c-ink);
  width:auto;height:auto;
  transform:none;
  transition:transform .25s ease,color .25s ease;
  margin-left:18px;
}
.faq .accordion-button:not(.collapsed)::after{content:"－";transform:rotate(90deg);color:var(--c-sub);}
.faq .accordion-body{
  padding:4px 24px 22px;
  font-size:15px;
  color:var(--t-sub);
  background:#F6F4EF;
  border-top:1px solid var(--c-line);
  line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:96px;
  padding:clamp(36px,5vw,56px);
  background:var(--c-card);
  border:2px solid var(--c-accent);
  border-radius:26px;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,420px);
  gap:36px;
  align-items:center;
  box-shadow:var(--sh-1);
}
.cta-band h2{font-size:clamp(1.6rem,2.6vw,2.2rem);font-weight:800;}
.cta-band .cta-note{margin-top:14px;color:var(--t-sub);font-size:15px;max-width:520px;}
.sub-form{display:flex;flex-direction:column;gap:14px;}
.sub-form input{
  height:48px;
  background:transparent;
  border:0;
  border-bottom:2px solid var(--c-line);
  color:var(--t-main);
  padding:6px 4px;
  border-radius:0;
  transition:border-color .24s ease;
}
.sub-form input::placeholder{color:var(--t-mute);}
.sub-form input:focus{outline:none;border-bottom-color:var(--c-accent);}
.form-tip{font-size:13px;color:var(--c-sub);min-height:20px;}
.privacy{font-size:12px;color:var(--t-mute);line-height:1.7;}
@media (max-width:899px){
  .cta-band{grid-template-columns:1fr;gap:24px;}
  .cta-band{margin-top:64px;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-ink);
  color:#B9C0B6;
  margin-top:96px;
  padding:72px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.3fr;
  gap:34px;
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:599px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:56px 0 22px;margin-top:64px;}
}
.footer-brand .brand-text{
  display:block;
  color:#fff;
  font-size:20px;
  font-weight:900;
  letter-spacing:-0.01em;
  margin-bottom:14px;
}
.footer-brand p{font-size:14px;line-height:1.85;color:#8A8F86;max-width:340px;}
.site-footer h4{color:#fff;font-size:14px;font-weight:800;margin-bottom:16px;letter-spacing:.02em;}
.site-footer ul{display:flex;flex-direction:column;gap:10px;font-size:14px;}
.site-footer a{color:#B9C0B6;}
.site-footer a:hover{color:var(--c-accent);}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:#8A8F86;
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s cubic-bezier(.22,.61,.36,1);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --c-ink:#0F1311;
  --c-accent:#C8F04B;
  --c-sub:#FF6A2B;
  --c-bg:#F6F4EF;
  --c-card:#FFFFFF;
  --c-line:#E4E1D8;
  --t-main:#14181A;
  --t-2:#5A6058;
  --t-3:#8A8F86;
  --sidebar-w:232px;
  --r-card:20px;
  --r-img:16px;
  --r-tag:6px;
  --shadow:0 1px 2px rgba(15,19,17,.06),0 18px 44px -26px rgba(15,19,17,.30);
  --shadow-hover:0 2px 4px rgba(15,19,17,.08),0 26px 56px -28px rgba(15,19,17,.38);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","SFMono-Regular","DIN Alternate",system-ui,-apple-system,sans-serif;

  --bs-body-bg:#F6F4EF;
  --bs-body-color:#14181A;
  --bs-body-font-family:var(--font-sans);
  --bs-border-radius:20px;
  --bs-primary:#0F1311;
  --bs-link-color:#14181A;
  --bs-link-hover-color:#0F1311;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-main);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:var(--c-accent);color:var(--c-ink);}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

/* 覆盖 Bootstrap 默认外观 */
.btn{border-radius:999px;}
.card{border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:none;background:var(--c-card);}
.container{max-width:1180px;}
a{--bs-link-color:#14181A;}

/* ---------- 骨架布局 ---------- */
.app{display:flex;min-height:100vh;position:relative;}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-ink);color:#fff;z-index:1040;
  display:flex;flex-direction:column;gap:22px;
  padding:30px 20px 26px;overflow-y:auto;
}
.sidebar::-webkit-scrollbar{width:6px;}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:99px;}
.main{flex:1 1 auto;min-width:0;margin-left:var(--sidebar-w);display:flex;flex-direction:column;}

/* ---------- 侧栏品牌 ---------- */
.sidebar__brand{display:flex;align-items:center;gap:11px;padding:0 8px 22px;border-bottom:1px solid rgba(255,255,255,.09);}
.brand-mark{
  display:grid;place-items:center;width:38px;height:38px;flex:0 0 auto;
  border-radius:11px;background:var(--c-accent);color:var(--c-ink);
  font-family:var(--font-num);font-weight:900;font-size:14px;letter-spacing:-.01em;
}
.brand-text{color:#fff;font-weight:900;font-size:16px;letter-spacing:-.01em;line-height:1.35;}

/* ---------- 侧栏导航 ---------- */
.sidebar__nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;display:block;padding:11px 14px;border-radius:10px;
  color:#B9C0B6;font-size:15px;font-weight:500;line-height:1.5;
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-item.active{color:#fff;background:rgba(200,240,75,.06);font-weight:700;}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--c-accent);
}

/* ---------- 侧栏底部 ---------- */
.sidebar__foot{margin-top:auto;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);display:flex;flex-direction:column;gap:14px;}
.btn-accent{
  display:block;text-align:center;background:var(--c-accent);color:var(--c-ink);
  font-weight:700;font-size:14px;padding:12px 18px;border-radius:999px;
  transition:background-color .25s var(--ease),transform .25s var(--ease),color .25s var(--ease);
}
.btn-accent:hover{background:#fff;color:var(--c-ink);transform:translateY(-2px);}
.sidebar__mail{font-size:12.5px;color:#8A9089;word-break:break-all;line-height:1.6;}
.sidebar__mail i{margin-right:6px;color:var(--c-accent);}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:1030;height:64px;
  background:var(--c-ink);align-items:center;justify-content:space-between;
  padding:0 18px;
}
.topbar__brand{color:#fff;font-weight:900;font-size:16px;letter-spacing:-.01em;}
.burger{
  width:42px;height:42px;border-radius:12px;cursor:pointer;
  border:1px solid rgba(255,255,255,.18);background:transparent;color:#fff;
  display:grid;place-items:center;font-size:16px;
  transition:background-color .22s var(--ease),border-color .22s var(--ease);
}
.burger:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32);}
.scrim{
  position:fixed;inset:0;background:rgba(15,19,17,.55);z-index:1035;
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease);
}
.scrim.show{opacity:1;pointer-events:auto;}

/* ---------- 容器与板块 ---------- */
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 clamp(20px,4vw,64px);}
.section{padding:96px 0;}
.section--facts{background:#fff;}
.section--faq{background:var(--c-bg);}
.section--cards{background:#fff;}
.section--cta{background:var(--c-ink);color:#fff;}
.section-head{max-width:740px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--t-3);
  text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px;}
.section-head h2{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:800;letter-spacing:-.02em;line-height:1.24;}
.section-head p{margin-top:14px;color:var(--t-2);font-size:1rem;}

/* ---------- 首屏窄幅 Hero ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  padding:clamp(56px,7vw,96px) 0 clamp(48px,5.4vw,72px);
  background-image:
    linear-gradient(102deg,rgba(15,19,17,.90) 0%,rgba(15,19,17,.70) 58%,rgba(15,19,17,.78) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.page-hero::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:4px;
  background:linear-gradient(90deg,var(--c-accent) 0%,var(--c-accent) 22%,transparent 22%);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:24px;}
.crumb a:hover{color:var(--c-accent);}
.crumb__cur{color:rgba(255,255,255,.9);}
.hero-title{
  font-size:clamp(2.6rem,5.6vw,4.4rem);font-weight:900;letter-spacing:-.02em;line-height:1.1;
}
.hero-sub{
  max-width:680px;margin-top:22px;
  font-size:clamp(1rem,1.4vw,1.15rem);line-height:1.8;color:rgba(255,255,255,.84);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.hero-tags li{
  font-size:12.5px;font-weight:500;padding:7px 15px;border-radius:999px;
  border:1px solid rgba(255,255,255,.24);color:rgba(255,255,255,.9);
  transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.hero-tags li:hover{border-color:var(--c-accent);background:rgba(200,240,75,.10);}

/* ---------- 速查数据 ---------- */
.fact-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--c-line);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
}
.fact{background:var(--c-card);padding:30px 26px;}
.fact strong{
  display:block;font-family:var(--font-num);font-weight:300;
  font-size:3rem;line-height:1;letter-spacing:-.03em;color:var(--c-ink);
}
.fact span{display:block;margin-top:14px;font-size:15px;font-weight:700;color:var(--t-main);}
.fact p{margin-top:8px;font-size:13.5px;line-height:1.72;color:var(--t-2);}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;}
.faq-item{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:14px;overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item:hover{border-color:rgba(15,19,17,.22);}
.faq-item[open]{border-color:rgba(15,19,17,.30);box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;user-select:none;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;font-size:17px;font-weight:700;line-height:1.6;color:var(--t-main);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:9px;height:9px;
  border-right:2px solid var(--t-2);border-bottom:2px solid var(--t-2);
  transform:rotate(45deg);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--c-ink);}
.faq-body{padding:0 24px 24px;color:var(--t-2);font-size:15.5px;line-height:1.85;}
.faq-body p{max-width:88ch;}
.faq-item[open] .faq-body{animation:faqIn .25s var(--ease);}
@keyframes faqIn{from{opacity:0;transform:translateY(-5px);}to{opacity:1;transform:none;}}

/* ---------- 信息卡 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.info-card{
  display:flex;flex-direction:column;background:var(--c-card);
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(15,19,17,.28);}
.info-card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E9E6DE;}
.info-card__media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s var(--ease);
}
.info-card:hover .info-card__media img{transform:scale(1.04);}
.tag{
  position:absolute;left:14px;top:14px;
  font-size:12px;font-weight:700;letter-spacing:.02em;
  padding:5px 11px;border-radius:var(--r-tag);
  color:var(--c-sub);background:rgba(255,106,43,.14);
  border:1px solid rgba(255,106,43,.22);backdrop-filter:blur(3px);
}
.info-card__body{display:flex;flex-direction:column;gap:10px;padding:24px 26px 26px;flex:1 1 auto;}
.info-card__body h3{font-size:1.25rem;font-weight:800;letter-spacing:-.01em;line-height:1.45;}
.info-card__body p{font-size:15px;line-height:1.8;color:var(--t-2);}
.info-card__link{
  margin-top:auto;display:inline-flex;align-items:center;gap:9px;
  font-size:14px;font-weight:700;color:var(--c-ink);
}
.info-card__link i{transition:transform .25s var(--ease);}
.info-card:hover .info-card__link i{transform:translateX(4px);}
.info-card__link:hover{color:var(--c-sub);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  display:grid;grid-template-columns:1.15fr .85fr;gap:38px;align-items:center;
  background:var(--c-bg);color:var(--t-main);
  border:2px solid var(--c-accent);border-radius:28px;
  padding:clamp(30px,4vw,50px);
}
.cta-band h2{font-size:clamp(1.6rem,2.6vw,2.15rem);font-weight:800;letter-spacing:-.02em;line-height:1.3;}
.cta-band p{margin-top:12px;color:var(--t-2);font-size:15.5px;max-width:46ch;}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;}
.cta-form input{
  flex:1 1 190px;min-width:0;height:52px;padding:0 18px;
  border:1px solid var(--c-line);border-radius:999px;background:#fff;
  outline:none;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.cta-form input::placeholder{color:var(--t-3);}
.cta-form input:focus{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(200,240,75,.35);}
.cta-form button{
  height:52px;padding:0 30px;border:0;border-radius:999px;cursor:pointer;
  background:var(--c-ink);color:#fff;font-weight:700;font-size:15px;
  transition:background-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.cta-form button:hover{background:var(--c-accent);color:var(--c-ink);transform:translateY(-2px);}
.cta-note{grid-column:1/-1;font-size:12.5px;color:var(--t-3);margin-top:4px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#B9C0B6;padding:72px 0 28px;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;}
.footer-brand .brand-text{display:block;font-size:18px;font-weight:900;letter-spacing:-.01em;margin-bottom:14px;}
.footer-brand p{font-size:14.5px;line-height:1.8;color:#9AA29A;max-width:34ch;}
.site-footer h4{color:#fff;font-size:14px;font-weight:800;letter-spacing:.06em;margin-bottom:16px;}
.site-footer ul{display:grid;gap:10px;}
.site-footer li{font-size:14.5px;line-height:1.7;color:#9AA29A;}
.site-footer a{font-size:14.5px;color:#B9C0B6;}
.site-footer a:hover{color:var(--c-accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:54px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:#8A9089;
}

/* ---------- 进入视口动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sidebar-w:200px;}
}
@media (max-width:991px){
  .sidebar{
    width:82vw;max-width:340px;transform:translateX(-100%);
    transition:transform .3s var(--ease);
    padding:24px 18px;
  }
  .sidebar.open{transform:translateX(0);box-shadow:0 0 60px rgba(0,0,0,.5);}
  .main{margin-left:0;}
  .topbar{display:flex;}
  .sidebar__nav{gap:0;margin-top:6px;}
  .nav-item{
    height:52px;display:flex;align-items:center;
    padding:0 14px;border-radius:0;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-item.active::before{top:0;bottom:0;height:auto;transform:none;border-radius:0;}
  .section{padding:72px 0;}
  .fact-grid{grid-template-columns:repeat(2,1fr);}
  .page-hero{padding:52px 0 46px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .section{padding:64px 0;}
  .section-head{margin-bottom:32px;}
  .fact-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;gap:26px;border-radius:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .page-hero{padding:44px 0 40px;}
  .hero-sub{font-size:15.5px;}
  .faq-item summary{font-size:16px;padding:18px 20px;}
  .faq-body{padding:0 20px 20px;}
  .info-card__body{padding:20px 20px 22px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .fact{padding:24px 22px;}
  .fact strong{font-size:2.5rem;}
  .hero-tags li{font-size:12px;padding:6px 12px;}
  .cta-form button{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}