/* roulang page: index */
:root{
  --pitch:#0B3D2E;
  --pitch-deep:#10553F;
  --pitch-light:#EAF7D8;
  --neon:#B7F03C;
  --signal:#FF6A2B;
  --ink:#0E1512;
  --sub:#3C4A44;
  --muted:#7A8A83;
  --canvas:#F7F8F5;
  --card:#FFFFFF;
  --night:#061A14;
  --line:#E3E8E2;
  --divider:#EEF1EC;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-sm:0 1px 2px rgba(6,26,20,.06);
  --shadow-md:0 8px 24px -12px rgba(6,26,20,.18);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--pitch);}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(183,240,60,.45);color:var(--night);}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#EDF0EA;}
::-webkit-scrollbar-thumb{background:#C3CCC2;border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:var(--pitch);}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){
  .container{padding-left:32px;padding-right:32px;}
}

.section{padding:64px 0;}
@media (min-width:1024px){
  .section{padding:104px 0;}
}
.section--tight{padding:48px 0;}
@media (min-width:1024px){
  .section--tight{padding:72px 0;}
}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:36px;
}
.section-head__left{max-width:640px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--pitch);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;background:var(--neon);display:block;border-radius:2px;
}
.section-title{font-size:clamp(24px,3vw,34px);margin-top:12px;}
.section-desc{margin-top:12px;color:var(--sub);font-size:15px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--pitch);
  border-bottom:1px solid transparent;
}
.text-link:hover{border-bottom-color:var(--neon);text-decoration:none;}
.text-link svg{transition:transform .2s ease;}
.text-link:hover svg{transform:translateX(4px);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:height .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}
.nav-bar{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
  transition:height .2s ease;
}
.site-header.is-scrolled .nav-bar{height:56px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--pitch) 0%,var(--pitch-deep) 100%);
  display:grid;place-items:center;
  position:relative;
  box-shadow:var(--shadow-sm);
}
.brand__mark::after{
  content:"";
  position:absolute;right:6px;bottom:6px;
  width:8px;height:8px;border-radius:50%;background:var(--neon);
}
.brand__mark span{
  font-family:var(--font-mono);font-size:14px;font-weight:700;color:#fff;
}
.brand__text{display:flex;flex-direction:column;line-height:1.1;}
.brand__name{font-size:15px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand__sub{font-size:11px;color:var(--muted);letter-spacing:.06em;}

.nav-links{display:none;align-items:center;gap:4px;margin-left:8px;}
@media (min-width:1024px){.nav-links{display:flex;}}
.nav-links a{
  position:relative;
  padding:8px 14px;
  border-radius:8px;
  font-size:14px;
  font-weight:500;
  color:var(--sub);
  white-space:nowrap;
}
.nav-links a:hover{background:#F1F6EC;color:var(--pitch);}
.nav-links a.is-active{color:var(--pitch);font-weight:600;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--neon);border-radius:2px;
}

.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto;}
.command-search{
  display:none;
  align-items:center;gap:8px;
  width:250px;height:38px;
  padding:0 12px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
@media (min-width:1200px){.command-search{display:flex;}}
.command-search:hover{border-color:var(--pitch);}
.command-search:focus-within{
  border-color:var(--pitch);
  box-shadow:0 0 0 3px rgba(183,240,60,.55);
}
.command-search svg{flex-shrink:0;color:var(--muted);}
.command-search input{
  border:0;outline:none;width:100%;background:transparent;
  font-size:14px;color:var(--ink);
}
.command-search input::placeholder{color:var(--muted);}
.command-search kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--muted);
  border:1px solid var(--line);border-radius:5px;padding:1px 5px;background:#FAFBF8;
}

.icon-btn{
  display:none;
  width:38px;height:38px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;
  place-items:center;color:var(--sub);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
@media (min-width:1024px){.icon-btn{display:grid;}}
.icon-btn:hover{border-color:var(--pitch);color:var(--pitch);background:var(--pitch-light);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;
  border:1.5px solid transparent;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn--primary{background:var(--pitch);color:#fff;box-shadow:var(--shadow-sm);}
.btn--primary:hover{background:var(--pitch-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn--outline{background:#fff;border-color:var(--pitch);color:var(--pitch);}
.btn--outline:hover{background:var(--pitch-light);color:var(--pitch);}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff;}
.btn--ghost:hover{border-color:var(--neon);color:var(--neon);}
.btn--sm{height:36px;padding:0 14px;font-size:13px;}
.btn--lg{height:48px;padding:0 26px;font-size:15px;}
.btn--signal{background:var(--signal);color:#fff;}
.btn--signal:hover{background:#E85A1C;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}

.nav-toggle{
  display:grid;place-items:center;
  width:38px;height:38px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);
}
@media (min-width:1024px){.nav-toggle{display:none;}}
.nav-toggle:hover{border-color:var(--pitch);}

.drawer-mask{
  position:fixed;inset:0;background:rgba(6,26,20,.5);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:#fff;z-index:80;
  transform:translateX(100%);
  transition:transform .28s ease;
  display:flex;flex-direction:column;
  padding:20px;
  border-left:1px solid var(--line);
}
.drawer.is-open{transform:translateX(0);}
.drawer__search{
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#FAFBF8;margin-bottom:22px;
}
.drawer__search input{border:0;outline:none;background:transparent;width:100%;font-size:14px;}
.drawer__links{display:flex;flex-direction:column;gap:6px;text-align:center;}
.drawer__links a{
  padding:12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--sub);
}
.drawer__links a:hover,.drawer__links a.is-active{background:var(--pitch-light);color:var(--pitch);}
.drawer__foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--divider);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:48px 0 56px;
  overflow:hidden;
  background:#fff;
}
@media (min-width:1024px){.hero{padding:72px 0 96px;}}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(11,61,46,.09) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.55;
  pointer-events:none;
}
.hero__grid{
  position:relative;
  display:grid;gap:36px;
  align-items:center;
}
@media (min-width:1024px){
  .hero__grid{grid-template-columns:7fr 5fr;gap:48px;}
}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--pitch-light);
  color:var(--pitch);font-size:13px;font-weight:600;
  border:1px solid rgba(11,61,46,.12);
}
.hero__badge i{
  width:7px;height:7px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 0 3px rgba(183,240,60,.35);
}
.hero h1{
  font-size:clamp(30px,4.6vw,54px);
  margin-top:18px;
  letter-spacing:-.02em;
}
.hero h1 em{
  font-style:normal;
  position:relative;
  color:var(--pitch);
}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:8px;
  background:rgba(183,240,60,.5);z-index:-1;border-radius:4px;
}
.hero__sub{
  margin-top:18px;
  font-size:17px;color:var(--sub);max-width:560px;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero__trust{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;}
.hero__trust span{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--muted);
}
.hero__trust span::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--neon);
}
.hero__visual{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  aspect-ratio:4/3;
  box-shadow:var(--shadow-md);
}
.hero__visual img{width:100%;height:100%;object-fit:cover;}
.hero__visual::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(11,61,46,.72) 0%,rgba(11,61,46,.18) 52%,rgba(6,26,20,0) 100%);
}
.hero__chip{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(255,255,255,.96);
  border-radius:14px;
  padding:14px 18px;
  box-shadow:var(--shadow-md);
  min-width:172px;
}
.hero__chip b{
  display:block;
  font-family:var(--font-mono);
  font-size:30px;line-height:1;color:var(--pitch);
  letter-spacing:-.02em;
}
.hero__chip b small{font-size:14px;margin-left:3px;color:var(--sub);}
.hero__chip p{margin-top:6px;font-size:12px;color:var(--muted);letter-spacing:.04em;}
.hero__stamp{
  position:absolute;right:18px;top:18px;z-index:2;
  width:64px;height:64px;border-radius:50%;
  background:var(--neon);
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  color:var(--night);text-align:center;line-height:1.25;
  box-shadow:0 8px 20px -8px rgba(6,26,20,.5);
}

/* ============ 信任条 ============ */
.trustbar{
  border-top:1px solid var(--divider);
  border-bottom:1px solid var(--divider);
  background:#fff;
}
.trustbar__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px 26px;
  min-height:64px;
  padding:14px 0;
}
.trustbar__item{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--muted);
  opacity:.6;
  transition:opacity .2s ease,color .2s ease;
}
.trustbar__item:hover{opacity:1;color:var(--pitch);}
.trustbar__item svg{color:var(--pitch);opacity:.8;}

/* ============ 服务矩阵 ============ */
.matrix{display:grid;gap:22px;}
@media (min-width:1024px){
  .matrix{grid-template-columns:2fr 1fr;}
}
.matrix__side{display:grid;gap:22px;}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(11,61,46,.2);}
.card__media{aspect-ratio:16/10;overflow:hidden;position:relative;}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.card:hover .card__media img{transform:scale(1.03);}
.card__body{padding:24px;}
.card__body h3{font-size:21px;}
.card__body p{margin-top:10px;color:var(--sub);font-size:15px;}
.card__list{margin-top:14px;display:grid;gap:8px;}
.card__list li{
  display:flex;gap:10px;font-size:14px;color:var(--sub);
}
.card__list li::before{
  content:"";flex-shrink:0;margin-top:9px;
  width:6px;height:6px;border-radius:2px;background:var(--neon);
}
.card__foot{
  margin-top:18px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--pitch);
}
.card--big .card__body{padding:28px;}
.card--compact .card__body{padding:20px;}
.card--compact h3{font-size:18px;}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  font-size:11px;font-weight:700;letter-spacing:.04em;
  background:var(--neon);color:var(--pitch);
}
.tag--soft{background:var(--pitch-light);color:var(--pitch);}
.tag--line{background:transparent;border:1px solid var(--line);color:var(--sub);}

/* ============ 数据区 ============ */
.stats{
  background:var(--night);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.stats::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(115deg,rgba(183,240,60,.08) 0 2px,transparent 2px 16px);
  opacity:.5;pointer-events:none;
}
.stats__inner{position:relative;}
.stats h2{color:#fff;font-size:clamp(24px,3vw,32px);}
.stats .section-desc{color:rgba(255,255,255,.7);}
.stats__grid{
  display:grid;gap:20px;margin-top:44px;
  grid-template-columns:repeat(2,minmax(0,1fr));
}
@media (min-width:768px){.stats__grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.stats__grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}}
.stat{
  border:1px solid rgba(183,240,60,.18);
  border-radius:var(--radius-card);
  padding:26px 22px;
  background:rgba(255,255,255,.02);
  transition:border-color .2s ease,background-color .2s ease;
}
.stat:hover{border-color:rgba(183,240,60,.5);background:rgba(183,240,60,.05);}
.stat b{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(36px,4.4vw,52px);
  line-height:1;
  color:#fff;
  letter-spacing:-.02em;
}
.stat b small{font-size:50%;margin-left:4px;color:var(--neon);}
.stat p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.72);}

/* ============ 轨道 ============ */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:22px;
  overflow-x:auto;
  padding-bottom:12px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px;}
.rail-card{
  flex:0 0 84%;
  scroll-snap-align:start;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
@media (min-width:768px){.rail-card{flex:0 0 46%;}}
@media (min-width:1024px){.rail-card{flex:0 0 calc((100% - 44px)/3.2);}}
.rail-card__media{aspect-ratio:16/10;overflow:hidden;}
.rail-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.rail-card:hover .rail-card__media img{transform:scale(1.03);}
.rail-card__body{padding:20px;}
.rail-card__body h3{font-size:18px;}
.rail-card__body p{margin-top:8px;font-size:14px;color:var(--sub);}
.rail-card__meta{
  margin-top:14px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}

/* ============ 步骤 ============ */
.steps-layout{display:grid;gap:36px;}
@media (min-width:1024px){
  .steps-layout{grid-template-columns:5fr 6fr;gap:56px;align-items:start;}
}
.steps-visual{
  position:relative;border-radius:18px;overflow:hidden;aspect-ratio:4/5;
  box-shadow:var(--shadow-md);
}
@media (min-width:1024px){.steps-visual{aspect-ratio:3/4;}}
.steps-visual img{width:100%;height:100%;object-fit:cover;}
.steps-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,26,20,.05) 0%,rgba(6,26,20,.72) 100%);
}
.steps-visual__caption{
  position:absolute;left:22px;right:22px;bottom:22px;z-index:2;color:#fff;
}
.steps-visual__caption p{font-size:14px;color:rgba(255,255,255,.8);margin-top:6px;}
.steps-visual__caption h3{color:#fff;font-size:19px;}
.steps{display:grid;gap:0;}
.step{
  display:grid;grid-template-columns:64px 1fr;gap:18px;
  padding:22px 0;
  border-top:1px solid var(--divider);
}
.step:first-child{border-top:0;padding-top:0;}
.step__num{
  font-family:var(--font-mono);
  font-size:26px;font-weight:700;
  color:var(--neon);
  line-height:1.1;
  -webkit-text-stroke:.4px rgba(11,61,46,.28);
}
.step h3{font-size:19px;}
.step p{margin-top:8px;font-size:15px;color:var(--sub);}

/* ============ 资讯列表 ============ */
.news-grid{
  display:grid;gap:22px;
  grid-template-columns:1fr;
}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.news-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(11,61,46,.22);}
.news-card__cover{aspect-ratio:16/10;overflow:hidden;background:#EDF0EA;}
.news-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.news-card:hover .news-card__cover img{transform:scale(1.03);}
.news-card__body{padding:18px;display:flex;flex-direction:column;flex:1;}
.news-card__title{
  margin-top:12px;font-size:16px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-card:hover .news-card__title{color:var(--pitch);}
.news-card__excerpt{
  margin-top:10px;font-size:14px;color:var(--sub);
  display:-webkit-box;-webkit-line-clamp:3;line-clamp:3;
  -webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;padding-top:16px;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.news-card__meta .arrow{transition:transform .2s ease;color:var(--pitch);}
.news-card:hover .news-card__meta .arrow{transform:translateX(4px);}

.news-empty{
  grid-column:1/-1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;
  padding:56px 24px;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:#fff;
}
.news-empty__icon{
  width:56px;height:56px;border-radius:16px;
  background:var(--pitch-light);
  display:grid;place-items:center;color:var(--pitch);
}
.news-empty p{margin-top:16px;color:var(--sub);font-size:15px;}
.news-empty .btn{margin-top:20px;}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--divider);}
.faq-item:first-child{border-top:1px solid var(--divider);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--pitch);}
.faq-item .plus{
  position:relative;flex-shrink:0;
  width:22px;height:22px;
  transition:transform .2s ease;
}
.faq-item .plus::before,
.faq-item .plus::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--pitch);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item .plus::before{width:14px;height:2px;}
.faq-item .plus::after{width:2px;height:14px;transition:opacity .2s ease;}
.faq-item[open] .plus{transform:rotate(180deg);}
.faq-item[open] .plus::after{opacity:0;}
.faq-item .answer{
  padding:0 4px 24px;
  color:var(--sub);font-size:15px;
  animation:fadeUp .25s ease-out both;
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(-6px);}
  to{opacity:1;transform:translateY(0);}
}

/* ============ CTA ============ */
.cta-band{
  background:var(--night);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(183,240,60,.16) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.6;pointer-events:none;
}
.cta-band__inner{
  position:relative;
  padding:56px 0;
  display:grid;gap:24px;align-items:center;
}
@media (min-width:1024px){
  .cta-band__inner{grid-template-columns:1fr auto;padding:72px 0;}
}
.cta-band h2{color:#fff;font-size:clamp(22px,3vw,30px);}
.cta-band p{color:rgba(255,255,255,.72);margin-top:12px;font-size:15px;max-width:620px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--night);color:rgba(255,255,255,.72);padding:64px 0 28px;}
.footer-grid{
  display:grid;gap:36px;
  grid-template-columns:1fr;
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px;}}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand__name{color:#fff;}
.footer-brand .brand__sub{color:rgba(255,255,255,.5);}
.footer-desc{margin-top:16px;font-size:14px;max-width:320px;color:rgba(255,255,255,.62);}
.footer-col h4{
  font-size:13px;color:var(--neon);letter-spacing:.08em;
  text-transform:uppercase;margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--neon);text-decoration:none;}
.footer-contact{display:grid;gap:10px;font-size:14px;}
.footer-contact .mono{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  text-align:center;font-size:13px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--neon);text-decoration:none;}

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

/* roulang page: article */
:root{
    --brand:#0B3D2E;
    --brand-deep:#10553F;
    --brand-tint:#EAF7D8;
    --neon:#B7F03C;
    --signal:#FF6A2B;
    --ink:#0E1512;
    --ink-2:#3C4A44;
    --ink-3:#7A8A83;
    --bg:#F7F8F5;
    --card:#FFFFFF;
    --dark:#061A14;
    --line:#E3E8E2;
    --line-soft:#EEF1EC;
    --radius-card:16px;
    --radius-btn:10px;
    --radius-img:14px;
    --shadow-sm:0 1px 2px rgba(6,26,20,.06);
    --shadow-md:0 8px 24px -12px rgba(6,26,20,.18);
    --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.8;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:var(--brand);text-decoration:none;transition:color .2s ease}
  a:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px}
  button,input{font:inherit}
  h1,h2,h3,h4{margin:0;font-family:var(--font-sans);letter-spacing:-.01em}
  p{margin:0}
  :focus-visible{outline:2px solid var(--neon);outline-offset:2px}
  ::selection{background:var(--neon);color:var(--brand)}
  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-thumb{background:#C9D3CB;border-radius:8px}
  ::-webkit-scrollbar-track{background:#EEF1EC}

  .container{max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:1024px){ .container{padding:0 32px} }
  .mono{font-family:var(--font-mono)}
  .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s ease;
  }
  .site-header.is-scrolled{box-shadow:var(--shadow-sm)}
  .nav-bar{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px;transition:height .2s ease}
  .site-header.is-scrolled .nav-bar{height:56px}
  .brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0}
  .brand:hover{text-decoration:none;color:var(--ink)}
  .brand__mark{
    position:relative;overflow:hidden;
    width:36px;height:36px;border-radius:11px;background:var(--brand);
    display:flex;align-items:center;justify-content:center;
    color:var(--neon);font-family:var(--font-mono);font-weight:700;font-size:17px;
  }
  .brand__mark::after{
    content:"";position:absolute;inset:0;
    background:repeating-linear-gradient(115deg,rgba(183,240,60,.22) 0 3px,transparent 3px 9px);
  }
  .brand__text{display:flex;flex-direction:column;line-height:1.15}
  .brand__name{font-size:15px;font-weight:700;letter-spacing:-.01em}
  .brand__sub{font-size:10px;letter-spacing:.16em;color:var(--ink-3);font-family:var(--font-mono)}

  .nav-links{display:none;align-items:center;gap:4px}
  @media (min-width:1024px){ .nav-links{display:flex} }
  .nav-links a{position:relative;padding:8px 12px;border-radius:8px;font-size:14px;font-weight:500;color:var(--ink-2)}
  .nav-links a:hover{background:#F1F6EC;color:var(--brand);text-decoration:none}
  .nav-links a.is-active{color:var(--brand);font-weight:600}
  .nav-links a.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--neon)}

  .nav-right{display:flex;align-items:center;gap:10px}
  .command-search{
    display:none;align-items:center;gap:8px;
    width:250px;height:38px;padding:0 10px;
    border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-3);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  @media (min-width:1024px){ .command-search{display:flex} }
  .command-search:hover{border-color:var(--brand)}
  .command-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(183,240,60,.45)}
  .command-search input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:13px;color:var(--ink)}
  .command-search input::placeholder{color:var(--ink-3)}
  .command-search kbd{font-family:var(--font-mono);font-size:11px;color:var(--ink-3);background:#F7F8F5;border:1px solid var(--line);border-radius:6px;padding:1px 5px}

  .icon-btn{
    display:none;width:36px;height:36px;align-items:center;justify-content:center;
    border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);
    transition:all .2s ease;
  }
  @media (min-width:1024px){ .icon-btn{display:flex} }
  .icon-btn:hover{color:var(--brand);border-color:var(--brand);text-decoration:none;transform:translateY(-1px)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--radius-btn);
    border:1.5px solid transparent;font-size:15px;font-weight:600;
    cursor:pointer;transition:all .2s ease;white-space:nowrap;
  }
  .btn:hover{text-decoration:none;transform:translateY(-1px)}
  .btn:active{transform:scale(.98)}
  .btn--primary{background:var(--brand);border-color:var(--brand);color:#fff}
  .btn--primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;box-shadow:var(--shadow-md)}
  .btn--secondary{background:#fff;border-color:var(--brand);color:var(--brand)}
  .btn--secondary:hover{background:var(--brand-tint);color:var(--brand-deep)}
  .btn--ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
  .btn--ghost:hover{border-color:var(--neon);color:var(--neon)}
  .btn--sm{height:38px;padding:0 16px;font-size:14px}
  .btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

  .nav-toggle{
    display:flex;width:38px;height:38px;align-items:center;justify-content:center;
    border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);cursor:pointer;
  }
  @media (min-width:1024px){ .nav-toggle{display:none} }

  .drawer{position:fixed;inset:0;z-index:80;display:none}
  .drawer.is-open{display:block}
  .drawer__mask{position:absolute;inset:0;background:rgba(6,26,20,.55)}
  .drawer__panel{
    position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);
    background:#fff;padding:20px;display:flex;flex-direction:column;gap:16px;overflow:auto;
    animation:drawerIn .24s ease-out;
  }
  @keyframes drawerIn{from{transform:translateX(24px);opacity:.4}to{transform:none;opacity:1}}
  .drawer__head{display:flex;align-items:center;justify-content:space-between}
  .drawer__close{width:34px;height:34px;border:1px solid var(--line);border-radius:9px;background:#fff;cursor:pointer;color:var(--ink-2)}
  .drawer__links{display:flex;flex-direction:column;gap:8px;flex:1}
  .drawer__links a{padding:12px 14px;border:1px solid var(--line-soft);border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-2)}
  .drawer__links a:hover{background:#F1F6EC;color:var(--brand);text-decoration:none}
  .drawer__cta{margin-top:auto}

  /* ---------- breadcrumb ---------- */
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);padding:22px 0 0}
  .breadcrumb a{color:var(--ink-3)}
  .breadcrumb a:hover{color:var(--brand);text-decoration:none}
  .breadcrumb .sep{color:#C3CCC5}
  .breadcrumb .current{color:var(--ink-2);max-width:62%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  /* ---------- article head ---------- */
  .article-wrap{padding-bottom:8px}
  .post-head{max-width:820px;padding-top:20px}
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
    background:var(--brand-tint);color:var(--brand);font-size:11px;font-weight:600;letter-spacing:.04em;
  }
  .post-head h1{
    font-size:clamp(28px,4.2vw,44px);line-height:1.28;font-weight:700;letter-spacing:-.02em;
    color:var(--ink);margin:16px 0 14px;
  }
  .post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--ink-3)}
  .post-meta .item{display:inline-flex;align-items:center;gap:6px}
  .post-meta .mono{color:var(--ink-2)}
  .post-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3CCC5}

  .post-cover{margin:28px 0 0;border-radius:var(--radius-img);overflow:hidden;background:#E9EFE8}
  .post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

  /* ---------- article layout ---------- */
  .article-grid{display:grid;grid-template-columns:1fr;gap:40px;margin-top:40px}
  @media (min-width:1024px){
    .article-grid{grid-template-columns:minmax(0,780px) 220px;gap:56px;justify-content:space-between}
  }

  .article-body{font-size:16px;line-height:1.9;color:var(--ink-2);word-break:break-word}
  .article-body p{margin:0 0 1.2em}
  .article-body h2{
    position:relative;margin:2em 0 .7em;padding-left:14px;
    font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;color:var(--ink);
  }
  .article-body h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:3px;background:var(--neon)}
  .article-body h3{margin:1.6em 0 .6em;font-size:20px;font-weight:700;color:var(--ink)}
  .article-body h4{margin:1.4em 0 .5em;font-size:17px;font-weight:700;color:var(--ink)}
  .article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em}
  .article-body li{margin:.4em 0}
  .article-body blockquote{
    margin:1.6em 0;padding:16px 20px;background:var(--brand-tint);
    border-left:3px solid var(--neon);border-radius:0 12px 12px 0;color:var(--brand-deep);
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:12px;margin:1.4em 0}
  .article-body figure{margin:1.4em 0}
  .article-body figcaption{font-size:13px;color:var(--ink-3);margin-top:8px;text-align:center}
  .article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
  .article-body strong{color:var(--ink)}
  .article-body hr{border:0;border-top:1px solid var(--line-soft);margin:2em 0}
  .article-body table{width:100%;display:block;overflow-x:auto;border-collapse:collapse;font-size:14px;margin:1.4em 0}
  .article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;white-space:nowrap}
  .article-body th{background:#F1F6EC;color:var(--ink);font-weight:600}
  .article-body pre{overflow-x:auto;background:var(--dark);color:#D9F2C6;padding:16px;border-radius:12px;font-size:13px;line-height:1.7}
  .article-body code{font-family:var(--font-mono)}

  .empty-post{
    border:1px dashed var(--line);border-radius:var(--radius-card);background:#fff;
    padding:40px 24px;text-align:center;
  }
  .empty-post__title{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:8px}
  .empty-post p{color:var(--ink-3);font-size:14px;margin-bottom:18px}

  /* ---------- toc ---------- */
  .article-side{display:none}
  @media (min-width:1024px){ .article-side{display:block} }
  .toc{position:sticky;top:88px;border:1px solid var(--line);border-radius:14px;background:#fff;padding:16px}
  .toc h4{margin:0 0 12px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--ink-3)}
  .toc ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
  .toc a{
    display:block;padding:7px 10px;font-size:13px;line-height:1.5;color:var(--ink-2);
    border-left:3px solid transparent;border-radius:0 8px 8px 0;
    overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  }
  .toc a:hover{background:#F7F8F5;color:var(--brand);text-decoration:none}
  .toc a.is-current{border-left-color:var(--neon);color:var(--brand);font-weight:600;background:#F7F8F5}

  /* ---------- post actions ---------- */
  .post-actions{
    margin-top:44px;padding:20px;border:1px solid var(--line);border-radius:var(--radius-card);
    background:#fff;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  }
  .tags{display:flex;flex-wrap:wrap;gap:8px}
  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    background:#F1F6EC;color:var(--brand-deep);font-size:12px;
  }
  .share{display:flex;align-items:center;gap:8px}
  .share a{
    width:34px;height:34px;display:flex;align-items:center;justify-content:center;
    border:1px solid var(--line);border-radius:10px;color:var(--ink-2);background:#fff;
    transition:all .2s ease;
  }
  .share a:hover{color:var(--brand);border-color:var(--brand);text-decoration:none;transform:translateY(-1px)}

  /* ---------- related ---------- */
  .related{padding:64px 0 0}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px}
  .section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink)}
  .section-head .more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
  .section-head .more:hover{text-decoration:none;color:var(--brand-deep);gap:10px}

  .card-grid{display:grid;grid-template-columns:1fr;gap:22px}
  @media (min-width:768px){ .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))} }
  @media (min-width:1024px){ .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))} }

  .post-card{
    display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
    border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D3DED4;text-decoration:none}
  .post-card__cover{overflow:hidden;background:#E9EFE8}
  .post-card__cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .25s ease-out}
  .post-card:hover .post-card__cover img{transform:scale(1.03)}
  .post-card__body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
  .post-card__title{font-size:17px;font-weight:700;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .post-card:hover .post-card__title{color:var(--brand)}
  .post-card__desc{font-size:13.5px;line-height:1.8;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .post-card__meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--ink-3);font-family:var(--font-mono)}

  /* ---------- cta ---------- */
  .cta-wrap{padding:72px 0 0}
  .cta-band{
    background:var(--dark);border-radius:20px;padding:34px 32px;color:#fff;
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
    border:1px solid rgba(183,240,60,.18);
    position:relative;overflow:hidden;
  }
  .cta-band::after{
    content:"";position:absolute;right:-40px;top:-40px;width:200px;height:200px;
    background:repeating-linear-gradient(115deg,rgba(183,240,60,.16) 0 4px,transparent 4px 12px);
    transform:rotate(6deg);pointer-events:none;
  }
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:8px}
  .cta-band p{font-size:14px;color:#9FB0A8;max-width:520px}

  /* ---------- footer ---------- */
  .site-footer{background:var(--dark);color:#B9C7BF;padding:64px 0 28px;margin-top:72px}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr} }
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-brand .brand__name{color:#fff}
  .footer-brand .brand__sub{color:rgba(183,240,60,.75)}
  .footer-desc{font-size:13.5px;line-height:1.9;color:#9FB0A8;max-width:330px}
  .footer-col h4{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--neon);margin-bottom:14px}
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
  .footer-col a{font-size:14px;color:#B9C7BF}
  .footer-col a:hover{color:var(--neon);text-decoration:none}
  .footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:#9FB0A8}
  .footer-contact a{color:#D6E3DA}
  .footer-bottom{
    margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
    text-align:center;font-size:13px;color:#7F8F87;
  }
  .footer-bottom a{color:#9FB0A8}

  @media (max-width:767px){
    .post-cover img{aspect-ratio:16/10}
    .post-actions{flex-direction:column;align-items:flex-start}
    .cta-band{padding:26px 20px}
  }
  @media (max-width:520px){
    .brand__sub{display:none}
    .post-meta .dot{display:none}
  }

/* roulang page: category1 */
:root{
  --primary:#0B3D2E;
  --primary-dark:#10553F;
  --primary-soft:#EAF7D8;
  --primary-tint:#F1F6EC;
  --lime:#B7F03C;
  --orange:#FF6A2B;
  --ink:#0E1512;
  --ink-2:#3C4A44;
  --ink-3:#7A8A83;
  --bg:#F7F8F5;
  --card:#FFFFFF;
  --dark:#061A14;
  --line:#E3E8E2;
  --divider:#EEF1EC;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --shadow-sm:0 1px 2px rgba(6,26,20,.06);
  --shadow-md:0 8px 24px -12px rgba(6,26,20,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.3;color:var(--ink)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:var(--lime);color:var(--primary)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--divider)}
::-webkit-scrollbar-thumb{background:#C7D2C6;border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:#A9B8A7}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1280px){.container{max-width:1280px}}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.nav-bar{display:flex;align-items:center;gap:16px;height:64px;transition:height .22s ease}
.site-header.is-scrolled .nav-bar{height:56px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:34px;height:34px;border-radius:10px;background:var(--primary);
  display:grid;place-items:center;color:var(--lime);
  font-family:var(--font-mono);font-weight:700;font-size:16px;line-height:1;flex-shrink:0;
}
.brand__text{display:flex;flex-direction:column;line-height:1.14}
.brand__name{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.brand__sub{font-size:10px;color:var(--ink-3);letter-spacing:.14em;font-family:var(--font-mono)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:10px}
.nav-links a{
  position:relative;font-size:14px;font-weight:500;color:var(--ink-2);
  padding:8px 12px;border-radius:8px;white-space:nowrap;
}
.nav-links a:hover{background:var(--primary-tint);color:var(--primary)}
.nav-links a.is-active{color:var(--primary);font-weight:600;background:var(--primary-tint)}
.nav-links a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--lime);border-radius:2px;
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.command-search{
  display:flex;align-items:center;gap:8px;width:248px;height:38px;padding:0 10px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-3);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.command-search:hover{border-color:var(--primary);color:var(--primary)}
.command-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(183,240,60,.55)}
.command-search input{
  flex:1;min-width:0;border:0;outline:0;background:transparent;
  font-size:13px;color:var(--ink);font-family:inherit;
}
.command-search input::placeholder{color:var(--ink-3)}
.command-search kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--ink-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 5px;background:var(--bg);
}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink-2);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-tint)}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);place-items:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
@media(max-width:1023px){
  .nav-links,.command-search,.nav-right .icon-btn{display:none}
  .nav-toggle{display:grid}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;white-space:nowrap;text-align:center;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;
}
.btn--primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm)}
.btn--primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(6,26,20,.6)}
.btn--outline{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn--outline:hover{background:var(--primary-soft);color:var(--primary-dark)}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-1px)}
.btn--sm{height:38px;padding:0 15px;font-size:13px}
.btn:active{transform:scale(.98)}
.btn--block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}
.link-arrow svg{transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- Badges / status ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11px;font-weight:600;letter-spacing:.02em;
  padding:3px 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary);
  white-space:nowrap;
}
.badge--lime{background:var(--lime);color:var(--primary)}
.badge--outline{background:#fff;border:1px solid var(--line);color:var(--ink-2)}
.status{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--ink-2);font-family:var(--font-mono)}
.status__dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(183,240,60,.3);flex-shrink:0}
.status--warm .status__dot{background:var(--orange);box-shadow:0 0 0 3px rgba(255,106,43,.22)}

/* ---------- Page hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--dark);color:#fff}
.page-hero__bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(6,26,20,.94) 0%,rgba(6,26,20,.78) 46%,rgba(11,61,46,.55) 100%);
}
.page-hero__lines{
  position:absolute;inset:0;opacity:.07;
  background-image:radial-gradient(rgba(183,240,60,.9) 1px,transparent 1px);
  background-size:22px 22px;
}
.page-hero__inner{position:relative;z-index:2;padding:40px 0 72px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62)}
.breadcrumb a{color:rgba(255,255,255,.62)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb span:last-child{color:rgba(255,255,255,.88)}
.page-hero h1{
  color:#fff;
  font-size:clamp(28px,4.2vw,46px);
  letter-spacing:-.02em;
  margin:18px 0 14px;
  max-width:820px;
}
.page-hero__sub{
  color:rgba(255,255,255,.76);font-size:16px;max-width:680px;line-height:1.85;
}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.page-hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-chip{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;color:rgba(255,255,255,.78);
  padding:5px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.18);
}
.hero-chip i{width:6px;height:6px;border-radius:50%;background:var(--lime);display:block}

/* ---------- Stat strip ---------- */
.stat-section{position:relative;z-index:5;margin-top:-34px}
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:14px;overflow:hidden;box-shadow:var(--shadow-md);
}
.stat-strip__item{background:#fff;padding:16px 18px}
.stat-strip__num{font-family:var(--font-mono);font-size:24px;font-weight:700;color:var(--primary);line-height:1.2}
.stat-strip__num em{font-style:normal;font-size:12px;color:var(--ink-3);margin-left:3px;font-weight:500}
.stat-strip__label{font-size:13px;color:var(--ink-2);margin-top:2px}
@media(max-width:767px){
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-strip__num{font-size:20px}
}

/* ---------- Category layout ---------- */
.cat-layout{
  display:grid;grid-template-columns:280px minmax(0,1fr);
  gap:32px;align-items:start;padding:56px 0 0;
}
.cat-side{display:flex;flex-direction:column;gap:16px;position:sticky;top:84px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:16px;margin-bottom:10px}
.side-card p{font-size:14px;color:var(--ink-2);line-height:1.85}
.side-card p + p{margin-top:10px}
.side-anchors{display:flex;flex-direction:column;gap:2px}
.side-anchors a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:14px;color:var(--ink-2);padding:9px 10px;border-radius:8px;
  border-left:3px solid transparent;
}
.side-anchors a:hover{background:var(--primary-tint);color:var(--primary);border-left-color:var(--lime)}
.side-anchors a span{font-family:var(--font-mono);font-size:12px;color:var(--ink-3)}
.side-contact{background:var(--dark);border-color:rgba(183,240,60,.18);color:rgba(255,255,255,.78)}
.side-contact h3{color:#fff}
.side-contact p{color:rgba(255,255,255,.7)}
.side-contact .mail{display:block;margin:12px 0 14px;font-size:14px;color:var(--lime);font-family:var(--font-mono);word-break:break-all}
.side-contact .mail:hover{color:#fff}
@media(max-width:1023px){
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:24px;padding-top:44px}
  .cat-side{position:static}
}

.cat-main{display:flex;flex-direction:column;gap:36px;min-width:0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:18px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px)}
.sec-head p{font-size:14px;color:var(--ink-3);margin-top:6px}
.sec-note{font-size:13px;color:var(--ink-3);font-family:var(--font-mono)}

/* ---------- Channel cards ---------- */
.channel-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.channel-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(11,61,46,.26)}
.channel-card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--dark)}
.channel-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.channel-card:hover .channel-card__media img{transform:scale(1.03)}
.channel-card__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(6,26,20,.62),rgba(6,26,20,0) 62%);
}
.channel-card__tag{position:absolute;top:12px;left:12px;z-index:2}
.channel-card__body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.channel-card__body h3{font-size:18px;line-height:1.4}
.channel-card__body p{font-size:14px;color:var(--ink-2);line-height:1.8}
.channel-card__foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--divider);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
@media(max-width:767px){.channel-list{grid-template-columns:minmax(0,1fr)}}

/* ---------- Spec table ---------- */
.table-wrap{
  overflow-x:auto;background:var(--card);border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow-sm);
}
table.spec{width:100%;min-width:620px;border-collapse:collapse}
table.spec thead th{
  background:var(--primary-tint);color:var(--primary);
  font-size:12px;letter-spacing:.06em;font-weight:600;text-align:left;
  padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.spec td{
  padding:13px 16px;font-size:14px;color:var(--ink-2);
  border-bottom:1px solid var(--divider);white-space:nowrap;
}
table.spec td:first-child{color:var(--ink);font-weight:600}
table.spec tbody tr:last-child td{border-bottom:0}
table.spec tbody tr:hover td{background:#FBFAFB}

/* ---------- Steps ---------- */
.steps{border-top:1px solid var(--divider)}
.step{display:grid;grid-template-columns:64px minmax(0,1fr);gap:18px;padding:22px 0;border-bottom:1px solid var(--divider)}
.step__num{
  font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--primary);
  border-left:3px solid var(--lime);padding-left:12px;line-height:1.2;
}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:14px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--divider)}
.faq details{border-bottom:1px solid var(--divider)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:17px 2px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--primary)}
.faq summary::after{
  content:"+";font-family:var(--font-mono);font-size:20px;line-height:1;color:var(--primary);
  transition:transform .2s ease;flex-shrink:0;
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .faq-answer{
  padding:0 2px 18px;font-size:15px;color:var(--ink-2);line-height:1.9;max-width:760px;
  animation:fadeIn .22s ease-out;
}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--dark);
  border:1px solid rgba(183,240,60,.18);border-radius:20px;
  padding:32px;display:flex;align-items:center;justify-content:space-between;
  gap:26px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;top:-40px;right:-30px;width:220px;height:220px;
  background:repeating-linear-gradient(115deg,rgba(183,240,60,.2) 0 2px,transparent 2px 12px);
  opacity:.5;pointer-events:none;
}
.cta-band__text{position:relative;z-index:2;max-width:620px}
.cta-band h2{color:#fff;font-size:clamp(21px,2.6vw,28px)}
.cta-band p{color:rgba(255,255,255,.72);font-size:14px;margin-top:8px}
.cta-band__actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:72px;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.35fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand__mark{background:rgba(183,240,60,.16);color:var(--lime)}
.footer-brand .brand__name{color:#fff}
.footer-brand .brand__sub{color:rgba(255,255,255,.42)}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:340px}
.footer-col h4{font-size:13px;color:var(--lime);letter-spacing:.06em;margin-bottom:14px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.footer-contact{display:flex;flex-direction:column;gap:9px;font-size:14px;color:rgba(255,255,255,.66)}
.footer-contact a{color:var(--lime)}
.footer-contact a:hover{color:#fff}
.footer-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  text-align:center;font-size:13px;color:rgba(255,255,255,.48);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:var(--lime)}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}.site-footer{padding-top:44px}}

/* ---------- Mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,26,20,.45);z-index:80;
  opacity:0;pointer-events:none;transition:opacity .26s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:90;
  background:#fff;box-shadow:-8px 0 30px -18px rgba(6,26,20,.5);
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:18px 18px 22px;
}
.mobile-drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.drawer-close{
  width:36px;height:36px;border-radius:9px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink-2);cursor:pointer;
}
.drawer-close:hover{border-color:var(--primary);color:var(--primary)}
.drawer-nav{flex:1;display:flex;flex-direction:column;justify-content:center;gap:6px;text-align:center}
.drawer-nav a{
  font-size:16px;font-weight:600;color:var(--ink-2);padding:12px;border-radius:10px;
}
.drawer-nav a:hover{background:var(--primary-tint);color:var(--primary)}
.drawer-nav a.is-active{background:var(--primary-tint);color:var(--primary);border-left:3px solid var(--lime)}
.drawer-foot{padding-top:14px;border-top:1px solid var(--divider)}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;margin-bottom:14px;
  border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink-3);
}
.drawer-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink)}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* roulang page: category2 */
:root{
    --primary:#0B3D2E;
    --primary-dark:#10553F;
    --primary-soft:#EAF7D8;
    --lime:#B7F03C;
    --orange:#FF6A2B;
    --ink:#0E1512;
    --ink-2:#3C4A44;
    --ink-3:#7A8A83;
    --bg:#F7F8F5;
    --card:#FFFFFF;
    --dark:#061A14;
    --border:#E3E8E2;
    --divider:#EEF1EC;
    --radius-card:16px;
    --radius-btn:10px;
    --radius-input:10px;
    --radius-img:14px;
    --shadow-sm:0 1px 2px rgba(6,26,20,.06);
    --shadow-md:0 8px 24px -12px rgba(6,26,20,.18);
    --container:1200px;
    --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    --font-mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.02em;font-weight:700;}
  p{margin:0;}
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  ul{margin:0;padding:0;list-style:none;}
  ::selection{background:rgba(183,240,60,.45);color:var(--ink);}
  :focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}

  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 32px;
  }
  .mono{font-family:var(--font-mono);}
  .section{padding:96px 0;}
  .section--dark{
    position:relative;
    background:var(--dark);
    color:#fff;
    overflow:hidden;
  }
  .section--dark::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(183,240,60,.9) 1px,transparent 1px);
    background-size:24px 24px;
    opacity:.07;
    pointer-events:none;
  }
  .section__head{max-width:720px;margin:0 auto 46px;text-align:center;}
  .section__title{font-size:clamp(24px,2.6vw,34px);}
  .section__desc{margin-top:14px;color:var(--ink-2);font-size:15px;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:44px;
    padding:0 22px;
    border:1.5px solid transparent;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    transition:transform .2s ease-out,background .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  }
  .btn--sm{height:38px;padding:0 16px;font-size:14px;}
  .btn--primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm);}
  .btn--primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-md);}
  .btn--primary:active{transform:scale(.98);}
  .btn--secondary{background:#fff;border-color:var(--primary);color:var(--primary);}
  .btn--secondary:hover{background:var(--primary-soft);transform:translateY(-1px);}
  .btn--secondary:active{transform:scale(.98);}
  .btn--ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
  .btn--ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-1px);}
  .btn--ghost:active{transform:scale(.98);}

  /* ============ 导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid var(--border);
    transition:box-shadow .2s ease-out;
  }
  .site-header.is-scrolled{box-shadow:var(--shadow-sm);}
  .nav-bar{
    display:flex;
    align-items:center;
    gap:22px;
    height:64px;
    transition:height .2s ease-out;
  }
  .site-header.is-scrolled .nav-bar{height:56px;}
  .brand{display:flex;align-items:center;gap:10px;flex:none;}
  .brand__mark{
    width:34px;
    height:34px;
    flex:none;
    display:grid;
    place-items:center;
    border-radius:11px;
    background:var(--primary);
    color:var(--lime);
    font-family:var(--font-mono);
    font-size:16px;
    font-weight:700;
  }
  .brand__text{display:flex;flex-direction:column;line-height:1.15;}
  .brand__name{font-size:15px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
  .brand__sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--ink-3);}
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:6px;}
  .nav-links a{
    position:relative;
    padding:8px 12px;
    border-radius:8px;
    font-size:14px;
    font-weight:500;
    color:var(--ink-2);
    white-space:nowrap;
    transition:background .2s ease-out,color .2s ease-out;
  }
  .nav-links a:hover{background:#F1F6EC;color:var(--primary);}
  .nav-links a.is-active{color:var(--primary);font-weight:700;}
  .nav-links a.is-active::after{
    content:"";
    position:absolute;
    left:12px;right:12px;bottom:2px;
    height:2px;
    border-radius:2px;
    background:var(--lime);
  }
  .nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
  .command-search{
    display:flex;
    align-items:center;
    gap:8px;
    width:256px;
    height:40px;
    padding:0 10px;
    border:1px solid var(--border);
    border-radius:var(--radius-input);
    background:#fff;
    color:var(--ink-3);
    transition:border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .command-search:hover{border-color:var(--primary);}
  .command-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(183,240,60,.45);}
  .command-search input{
    width:100%;
    border:0;
    outline:0;
    background:transparent;
    font-size:14px;
    color:var(--ink);
  }
  .command-search input::placeholder{color:var(--ink-3);}
  .command-search kbd{
    flex:none;
    font-family:var(--font-mono);
    font-size:11px;
    padding:2px 6px;
    border:1px solid var(--border);
    border-radius:6px;
    background:var(--bg);
    color:var(--ink-3);
  }
  .icon-btn{
    width:38px;
    height:38px;
    flex:none;
    display:grid;
    place-items:center;
    border:1px solid var(--border);
    border-radius:var(--radius-btn);
    background:#fff;
    color:var(--ink-2);
    cursor:pointer;
    transition:border-color .2s ease-out,color .2s ease-out,background .2s ease-out;
  }
  .icon-btn:hover{border-color:var(--primary);color:var(--primary);background:#F9FCF4;}
  .icon-btn:active{transform:scale(.98);}
  .nav-toggle{
    display:none;
    width:38px;
    height:38px;
    flex:none;
    place-items:center;
    border:1px solid var(--border);
    border-radius:var(--radius-btn);
    background:#fff;
    color:var(--ink-2);
    cursor:pointer;
  }
  .nav-toggle:hover{border-color:var(--primary);color:var(--primary);}

  /* ============ 移动端抽屉 ============ */
  .nav-drawer{position:fixed;inset:0;z-index:90;display:none;}
  .nav-drawer.is-open{display:block;}
  .nav-drawer__backdrop{position:absolute;inset:0;background:rgba(6,26,20,.55);}
  .nav-drawer__panel{
    position:absolute;
    top:0;right:0;bottom:0;
    width:min(360px,86vw);
    padding:18px 20px 24px;
    display:flex;
    flex-direction:column;
    gap:16px;
    background:#fff;
    box-shadow:-16px 0 40px rgba(6,26,20,.2);
    animation:drawerIn .22s ease-out;
  }
  @keyframes drawerIn{
    from{transform:translateX(28px);opacity:.5;}
    to{transform:translateX(0);opacity:1;}
  }
  .nav-drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .nav-drawer .command-search{width:100%;}
  .nav-drawer__links{display:flex;flex-direction:column;gap:6px;}
  .nav-drawer__links a{
    padding:12px 14px;
    border-radius:10px;
    font-size:15px;
    font-weight:500;
    color:var(--ink-2);
    transition:background .2s ease-out,color .2s ease-out;
  }
  .nav-drawer__links a:hover{background:#F1F6EC;color:var(--primary);}
  .nav-drawer__links a.is-active{background:var(--primary-soft);color:var(--primary);font-weight:700;}
  .nav-drawer__cta{margin-top:auto;width:100%;}

  /* ============ 分类 Hero（居中版） ============ */
  .db-hero{position:relative;background:var(--dark);color:#fff;overflow:hidden;}
  .db-hero__bg{position:absolute;inset:0;}
  .db-hero__bg img{width:100%;height:100%;object-fit:cover;opacity:.42;}
  .db-hero__bg::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(158deg,rgba(6,26,20,.94) 0%,rgba(11,61,46,.74) 58%,rgba(6,26,20,.92) 100%);
  }
  .db-hero__inner{
    position:relative;
    z-index:2;
    max-width:880px;
    margin:0 auto;
    padding:104px 0 92px;
    text-align:center;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:30px;
    padding:0 14px;
    border-radius:999px;
    background:rgba(183,240,60,.16);
    border:1px solid rgba(183,240,60,.45);
    color:var(--lime);
    font-size:13px;
    font-weight:600;
    letter-spacing:.04em;
  }
  .db-hero h1{
    margin-top:22px;
    font-size:clamp(30px,4.6vw,52px);
    font-weight:700;
    letter-spacing:-.02em;
  }
  .db-hero__lead{
    margin:20px auto 0;
    max-width:640px;
    font-size:17px;
    line-height:1.8;
    color:rgba(255,255,255,.78);
  }
  .hero__actions{
    display:flex;
    align-items:center;
    justify-content:center;
    flex-wrap:wrap;
    gap:14px;
    margin-top:34px;
  }
  .hero__badges{
    display:flex;
    align-items:center;
    justify-content:center;
    flex-wrap:wrap;
    gap:10px 22px;
    margin-top:30px;
  }
  .hero__badges li{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:rgba(255,255,255,.72);
  }
  .hero__badges li::before{
    content:"";
    width:7px;height:7px;
    border-radius:50%;
    background:var(--lime);
    flex:none;
  }

  /* ============ 细统计条 ============ */
  .stat-strip{background:#fff;border-bottom:1px solid var(--border);}
  .stat-strip__inner{
    display:flex;
    align-items:center;
    gap:28px;
    padding:14px 0;
    overflow-x:auto;
    scrollbar-width:none;
  }
  .stat-strip__inner::-webkit-scrollbar{display:none;}
  .stat-strip__inner span{
    display:flex;
    align-items:center;
    gap:8px;
    font-family:var(--font-mono);
    font-size:13px;
    color:var(--ink-2);
    white-space:nowrap;
  }
  .stat-strip__inner span::before{
    content:"";
    width:6px;height:6px;
    border-radius:50%;
    background:var(--orange);
    flex:none;
  }

  /* ============ Tab 切换条 ============ */
  .tabs-band{background:#fff;border-bottom:1px solid var(--border);}
  .tabs-band__inner{
    display:flex;
    align-items:center;
    gap:8px;
    padding:14px 0;
    overflow-x:auto;
    scrollbar-width:none;
  }
  .tabs-band__inner::-webkit-scrollbar{display:none;}
  .tab{
    flex:none;
    padding:8px 16px;
    border:1px solid var(--border);
    border-radius:999px;
    background:#fff;
    color:var(--ink-2);
    font-size:14px;
    font-weight:500;
    cursor:pointer;
    transition:background .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  }
  .tab:hover{border-color:var(--primary);color:var(--primary);}
  .tab:active{transform:scale(.98);}
  .tab.is-active{background:var(--primary);border-color:var(--primary);color:#fff;}

  /* ============ 卡片网格 2×3 ============ */
  .db-grid__cards{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .data-card{
    display:flex;
    flex-direction:column;
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-sm);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .data-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-md);
    border-color:#D5E2CE;
  }
  .data-card__media{
    position:relative;
    aspect-ratio:16/10;
    overflow:hidden;
    background:#E9EEE6;
  }
  .data-card__media img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .2s ease-out;
  }
  .data-card:hover .data-card__media img{transform:scale(1.03);}
  .data-card__body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
  .badge{
    display:inline-flex;
    align-items:center;
    align-self:flex-start;
    height:22px;
    padding:0 10px;
    border-radius:999px;
    background:var(--primary-soft);
    color:var(--primary);
    font-size:11px;
    font-weight:600;
    letter-spacing:.02em;
  }
  .data-card__title{margin-top:12px;font-size:19px;transition:color .2s ease-out;}
  .data-card:hover .data-card__title{color:var(--primary);}
  .data-card__desc{margin-top:10px;font-size:14px;line-height:1.78;color:var(--ink-2);}
  .data-card__meta{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    margin-top:18px;
    padding-top:14px;
    border-top:1px solid var(--divider);
    font-family:var(--font-mono);
    font-size:13px;
    color:var(--ink-3);
  }
  .data-card__meta .arrow{color:var(--primary);transition:transform .2s ease-out;}
  .data-card:hover .data-card__meta .arrow{transform:translateX(4px);}

  /* ============ 深色数据区 ============ */
  .stat-grid{
    position:relative;
    z-index:2;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
  }
  .stat{
    padding:26px 24px 28px;
    border:1px solid rgba(183,240,60,.18);
    border-radius:var(--radius-card);
    background:rgba(255,255,255,.03);
  }
  .stat__num{
    font-family:var(--font-mono);
    font-size:clamp(38px,4vw,54px);
    font-weight:700;
    line-height:1;
    letter-spacing:-.03em;
    color:#fff;
  }
  .stat__num em{font-style:normal;font-size:.5em;color:var(--lime);margin-left:4px;}
  .stat__label{margin-top:20px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.72);}
  .section--dark .section__title{color:#fff;}
  .section--dark .section__desc{color:rgba(255,255,255,.7);}

  /* ============ 使用流程 ============ */
  .flow{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
  }
  .flow__item{
    padding-left:18px;
    border-left:3px solid var(--lime);
  }
  .flow__num{
    font-family:var(--font-mono);
    font-size:22px;
    font-weight:700;
    color:var(--primary);
    letter-spacing:-.02em;
  }
  .flow__title{margin-top:12px;font-size:18px;}
  .flow__desc{margin-top:8px;font-size:14px;line-height:1.75;color:var(--ink-2);}

  /* ============ FAQ ============ */
  .faq{max-width:860px;margin:0 auto;border-top:1px solid var(--divider);}
  .faq__item{border-bottom:1px solid var(--divider);}
  .faq__q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:22px 4px;
    border:0;
    background:none;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--ink);
    cursor:pointer;
    transition:color .2s ease-out;
  }
  .faq__q:hover{color:var(--primary);}
  .faq__icon{
    flex:none;
    width:26px;
    height:26px;
    display:grid;
    place-items:center;
    border:1px solid var(--border);
    border-radius:8px;
    color:var(--primary);
    transition:transform .2s ease-out,background .2s ease-out,border-color .2s ease-out;
  }
  .faq__item.is-open .faq__icon{transform:rotate(45deg);background:var(--primary-soft);border-color:var(--primary);}
  .faq__a{
    max-height:0;
    overflow:hidden;
    transition:max-height .28s ease-out;
    opacity:.2;
  }
  .faq__item.is-open .faq__a{max-height:340px;opacity:1;}
  .faq__a p{
    margin:0 0 20px;
    padding-right:44px;
    font-size:15px;
    line-height:1.85;
    color:var(--ink-2);
  }

  /* ============ 底部 CTA ============ */
  .cta-band{padding:0 0 96px;}
  .cta-band__inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    flex-wrap:wrap;
    padding:44px 48px;
    border:1px solid rgba(183,240,60,.18);
    border-radius:22px;
    background:var(--dark);
    color:#fff;
  }
  .cta-band__title{font-size:clamp(22px,2.4vw,30px);}
  .cta-band__desc{margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);}
  .cta-band__actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .site-footer{
    background:var(--dark);
    color:rgba(255,255,255,.72);
    padding:72px 0 26px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.2fr;
    gap:36px;
  }
  .footer-brand{display:flex;align-items:center;gap:10px;}
  .footer-brand .brand__mark{background:var(--primary-dark);color:var(--lime);}
  .footer-brand .brand__name{color:#fff;}
  .footer-brand .brand__sub{color:rgba(255,255,255,.45);}
  .footer-desc{
    margin-top:18px;
    max-width:340px;
    font-size:14px;
    line-height:1.85;
    color:rgba(255,255,255,.66);
  }
  .footer-col h4{
    margin-bottom:16px;
    font-size:13px;
    letter-spacing:.08em;
    color:var(--lime);
  }
  .footer-col li + li{margin-top:10px;}
  .footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease-out;}
  .footer-col a:hover{color:var(--lime);}
  .footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;}
  .footer-bottom{
    margin-top:52px;
    padding-top:22px;
    border-top:1px solid rgba(255,255,255,.1);
    text-align:center;
    font-size:13px;
    color:rgba(255,255,255,.5);
  }
  .footer-bottom a{color:rgba(255,255,255,.72);}
  .footer-bottom a:hover{color:var(--lime);}

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .nav-links,.nav-right .command-search{display:none;}
    .nav-toggle{display:grid;}
    .db-grid__cards{grid-template-columns:repeat(2,1fr);}
    .stat-grid{grid-template-columns:repeat(2,1fr);}
    .flow{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:repeat(2,1fr);}
  }
  @media (max-width:768px){
    .container{padding:0 20px;}
    .section{padding:64px 0;}
    .db-hero__inner{padding:72px 0 64px;}
    .db-hero__lead{font-size:15.5px;}
    .faq__q{font-size:16px;padding:20px 2px;}
    .faq__a p{padding-right:12px;}
    .cta-band{padding-bottom:64px;}
    .cta-band__inner{padding:32px 24px;border-radius:18px;}
    .site-footer{padding:56px 0 24px;}
  }
  @media (max-width:640px){
    .db-grid__cards{grid-template-columns:1fr;}
    .flow{grid-template-columns:1fr;}
    .stat-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
    .stat{padding:20px 18px 22px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-desc{max-width:none;}
    .hero__actions{width:100%;}
    .hero__actions .btn{width:100%;}
    .cta-band__actions{width:100%;}
    .cta-band__actions .btn{width:100%;}
  }