/* roulang page: index */
:root{
  --bg:#F6F5F1;
  --surface:#FFFFFF;
  --surface-2:#EFEDE7;
  --ink:#101114;
  --ink-2:#5A5D66;
  --ink-3:#8B8E96;
  --brand:#B7F135;
  --brand-ink:#101114;
  --accent:#FF5A28;
  --dark:#111318;
  --dark-ink:#F6F5F1;
  --dark-ink-2:#A7ABB4;
  --line:#E3E1DA;
  --r-sm:8px;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:24px;
  --shadow-1:0 1px 2px rgba(16,17,20,.06);
  --shadow-2:0 12px 32px -12px rgba(16,17,20,.18);
  --nav-h-desktop:96px;
  --nav-h-mobile:92px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  padding-bottom:72px;
}
@media (min-width:1024px){ body{padding-bottom:0;} }
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:40px;
  padding-right:40px;
}
@media (max-width:1023px){ .container-x{padding-left:28px;padding-right:28px;} }
@media (max-width:520px){ .container-x{padding-left:20px;padding-right:20px;} }

.section{padding-top:96px;padding-bottom:96px;}
@media (max-width:1023px){ .section{padding-top:72px;padding-bottom:72px;} }
@media (max-width:520px){ .section{padding-top:56px;padding-bottom:56px;} }

.h1{font-size:clamp(34px,5.2vw,62px);font-weight:800;line-height:1.06;letter-spacing:-0.02em;}
.h2{font-size:clamp(24px,3vw,36px);line-height:1.2;font-weight:700;letter-spacing:-0.01em;}
.h3{font-size:20px;line-height:1.45;font-weight:700;}
.h4{font-size:17px;line-height:1.5;font-weight:600;}
.body-2{font-size:14px;line-height:1.7;color:var(--ink-2);}
.meta{font-size:13px;line-height:1.5;color:var(--ink-3);}
[class^="anchor-"],section[id],h2[id],h3[id]{scroll-margin-top:var(--nav-h-desktop);}
@media (max-width:1023px){ [class^="anchor-"],section[id],h2[id],h3[id]{scroll-margin-top:var(--nav-h-mobile);} }

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:16px;line-height:1;
  border-radius:999px;border:1px solid transparent;
  min-height:44px;padding:0 24px;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:var(--brand-ink);box-shadow:var(--shadow-1);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94);}
.btn-outline{background:transparent;color:var(--ink);border:1px solid var(--ink);border-radius:var(--r-btn);}
.btn-outline:hover{background:var(--ink);color:var(--dark-ink);}
.btn-outline:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 20px;font-size:15px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:700;font-size:16px;color:var(--ink);
  background-image:linear-gradient(var(--brand),var(--brand));
  background-repeat:no-repeat;background-size:0% 2px;background-position:0 100%;
  transition:background-size .2s ease;
  padding-bottom:3px;
}
.btn-text:hover{background-size:100% 2px;}
.btn-text .arw{transition:transform .2s ease;}
.btn-text:hover .arw{transform:translateX(4px);}

.badge{
  display:inline-flex;align-items:center;
  font-size:13px;line-height:1;font-weight:600;
  padding:6px 12px;border-radius:999px;
  background:rgba(183,241,53,.15);color:var(--brand-ink);
}
.badge-accent{background:rgba(255,90,40,.14);color:#B8340E;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;padding:8px 14px;border-radius:999px;
  background:rgba(183,241,53,.22);color:var(--brand-ink);
}

/* 卡片 */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  display:block;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.card:hover .card-title{background-size:100% 2px;}
.card-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);
  background-image:linear-gradient(var(--brand),var(--brand));
  background-repeat:no-repeat;background-size:0% 2px;background-position:0 100%;
  transition:background-size .2s ease;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.clamp-1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.thumb{overflow:hidden;background:var(--surface-2);}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .thumb img{transform:scale(1.03);}
.ratio-16-9{aspect-ratio:16/9;}
.ratio-4-3{aspect-ratio:4/3;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,245,241,.92);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-top{
  height:64px;display:flex;align-items:center;gap:20px;
  transition:height .24s ease;
}
.site-header.is-stuck .nav-top{height:56px;}
@media (max-width:1023px){ .nav-top{height:56px;} .site-header.is-stuck .nav-top{height:56px;} }
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border:2px solid var(--brand);border-radius:6px;position:relative;flex-shrink:0;
  background:var(--brand);
}
.logo-mark::after{
  content:"";position:absolute;left:9px;top:7px;width:9px;height:9px;
  border-top:2px solid var(--brand-ink);border-right:2px solid var(--brand-ink);
  transform:rotate(45deg);
}
.logo-text{font-size:16px;font-weight:800;letter-spacing:-0.01em;color:var(--ink);white-space:nowrap;}
@media (max-width:520px){ .logo-text{font-size:14px;} }
.search-box{
  flex:1;max-width:420px;min-width:220px;
  height:40px;border-radius:var(--r-btn);
  background:var(--surface-2);border:1px solid var(--line);
  display:flex;align-items:center;gap:8px;padding:0 12px;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px var(--brand);}
.search-box input{
  flex:1;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:var(--ink-3);}
@media (max-width:1023px){ .search-box{display:none;} }
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--surface-2);border:1px solid var(--line);color:var(--ink);
  transition:background-color .2s ease,border-color .2s ease;
}
.icon-btn:hover{border-color:var(--ink);}
.nav-tabs-wrap{
  position:relative;height:40px;overflow:hidden;
}
.nav-tabs-wrap::before,
.nav-tabs-wrap::after{
  content:"";position:absolute;top:0;bottom:0;width:32px;pointer-events:none;z-index:2;
}
.nav-tabs-wrap::before{left:0;background:linear-gradient(90deg,rgba(246,245,241,1),rgba(246,245,241,0));}
.nav-tabs-wrap::after{right:0;background:linear-gradient(270deg,rgba(246,245,241,1),rgba(246,245,241,0));}
.nav-tabs{
  display:flex;align-items:center;gap:8px;height:40px;
  overflow-x:auto;scroll-snap-type:x proximity;
  -ms-overflow-style:none;scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;scroll-snap-align:start;
  height:36px;display:inline-flex;align-items:center;
  padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--ink-2);
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.tab:hover{color:var(--ink);border-color:var(--line);}
.tab.is-active{background:var(--ink);color:var(--brand);}
@media (max-width:1023px){
  .nav-tabs-wrap{height:36px;}
  .nav-tabs{height:36px;gap:6px;}
  .tab{height:36px;padding:0 14px;font-size:13px;}
}

/* 全屏搜索层 */
.search-overlay{
  position:fixed;inset:0;z-index:80;background:var(--surface);
  display:none;flex-direction:column;padding:20px;
}
.search-overlay.is-open{display:flex;}
.search-overlay .row{display:flex;align-items:center;gap:12px;}
.search-overlay input{
  flex:1;height:48px;border-radius:var(--r-btn);
  background:var(--surface-2);border:1px solid var(--line);
  padding:0 14px;font-size:16px;outline:none;
}
.search-overlay input:focus{border-color:var(--brand);box-shadow:0 0 0 2px var(--brand);}
.hot-words{margin-top:24px;display:flex;flex-wrap:wrap;gap:8px;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--surface);
  transform:translateY(100%);transition:transform .24s ease;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;border-bottom:1px solid var(--line);
  font-size:16px;font-weight:600;color:var(--ink);
}
.drawer-link.is-active{color:var(--ink);}
.drawer-link.is-active::after{content:"";width:8px;height:8px;border-radius:999px;background:var(--brand);}

/* Hero */
.hero{padding-top:64px;padding-bottom:88px;}
@media (max-width:1023px){ .hero{padding-top:40px;padding-bottom:64px;} }
.hero-img-wrap{
  position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--surface-2);
}
.hero-img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.hero-img-wrap:hover img{transform:scale(1.03);}
.hero-corner{
  position:absolute;left:16px;top:16px;width:52px;height:52px;
  border-left:2px solid var(--brand);border-top:2px solid var(--brand);
  border-top-left-radius:8px;pointer-events:none;
}
.hero-index{
  position:absolute;right:16px;top:16px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  background:var(--brand);color:var(--brand-ink);
  padding:5px 10px;border-radius:999px;
}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--ink-3);}
.trust-row span.sep{width:1px;height:12px;background:var(--line);}

/* 卖点三连 */
.point{
  padding-top:24px;border-top:2px solid var(--brand);
  display:flex;gap:18px;
}
.point .pnum{
  font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1;color:var(--brand);
  font-variant-numeric:tabular-nums;flex-shrink:0;
}
.point-divide{position:relative;}
@media (min-width:1024px){
  .point-divide + .point-divide::before{
    content:"";position:absolute;left:-12px;top:0;bottom:0;width:1px;background:var(--line);
  }
}
@media (max-width:1023px){
  .point .pnum{font-size:32px;}
}

/* 场景块 */
.scene{
  border-radius:var(--r-lg);overflow:hidden;
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  border:1px solid var(--line);
}
.scene.is-dark{background:var(--dark);border-color:rgba(255,255,255,.10);}
.scene-body{padding:56px 48px;display:flex;flex-direction:column;justify-content:center;gap:20px;}
.scene-media{overflow:hidden;background:var(--surface-2);}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.scene:hover .scene-media img{transform:scale(1.03);}
.scene.is-dark .scene-body{color:var(--dark-ink);}
.scene.is-dark .body-2{color:var(--dark-ink-2);}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;}
.check-list li .ck{
  width:16px;height:16px;flex-shrink:0;margin-top:6px;border-radius:4px;background:var(--brand);
  position:relative;
}
.check-list li .ck::after{
  content:"";position:absolute;left:5px;top:2px;width:4px;height:8px;
  border-right:2px solid var(--brand-ink);border-bottom:2px solid var(--brand-ink);
  transform:rotate(45deg);
}
.scene.is-dark .check-list li{color:var(--dark-ink);}
@media (max-width:1023px){
  .scene{grid-template-columns:1fr;}
  .scene-media{order:-1;}
  .scene-body{padding:36px 28px;}
}

/* 列表卡 */
.compact-item{
  display:flex;gap:14px;align-items:center;
  padding:12px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.compact-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.compact-item:hover .card-title{background-size:100% 2px;}
.compact-thumb{width:96px;height:72px;border-radius:var(--r-sm);overflow:hidden;flex-shrink:0;background:var(--surface-2);}
.compact-thumb img{width:100%;height:100%;object-fit:cover;}
.empty-state{
  border:1px dashed var(--brand);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;color:var(--ink-2);font-size:14px;
  background:rgba(183,241,53,.06);
}

/* 数据条 */
.stat-num{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1;font-variant-numeric:tabular-nums;}
.stat-num .dot{color:var(--accent);}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;gap:14px;min-width:min(420px,82vw);
}
@media (min-width:1024px){ .quote-card{min-width:0;} }
.quote-scroll{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:8px;-ms-overflow-style:none;scrollbar-width:none;
}
.quote-scroll::-webkit-scrollbar{display:none;}
.quote-scroll > *{scroll-snap-align:start;}

/* FAQ */
.faq-list{max-width:760px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16px;font-weight:700;color:var(--ink);line-height:1.6;
}
.faq-q .plus{
  width:20px;height:20px;flex-shrink:0;position:relative;transition:transform .24s ease;
}
.faq-q .plus::before,
.faq-q .plus::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:background-color .24s ease;
}
.faq-q .plus::before{left:0;top:9px;width:20px;height:2px;}
.faq-q .plus::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);}
.faq-item.is-open .faq-q .plus::before,
.faq-item.is-open .faq-q .plus::after{background:var(--brand);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .24s ease;
  font-size:15px;line-height:1.8;color:var(--ink-2);
}
.faq-a p{padding-bottom:20px;}

/* 深色 CTA */
.cta-dark{
  position:relative;background:var(--dark);color:var(--dark-ink);
  padding:96px 0;overflow:hidden;text-align:center;
}
.cta-dark::before,
.cta-dark::after{
  content:"";position:absolute;top:-40%;width:240px;height:180%;
  background:var(--brand);opacity:.07;
}
.cta-dark::before{left:8%;transform:skewX(-14deg);}
.cta-dark::after{right:8%;transform:skewX(14deg);}
.cta-dark .inner{position:relative;z-index:1;}
.cta-dark .big{font-size:clamp(28px,4.4vw,52px);font-weight:800;line-height:1.12;letter-spacing:-0.02em;}

/* 页脚 */
.site-footer{background:var(--dark);color:var(--dark-ink);padding:72px 0 24px;}
.foot-title{font-size:13px;font-weight:600;color:var(--dark-ink-2);margin-bottom:16px;}
.foot-link{
  display:inline-block;font-size:14px;color:var(--dark-ink);padding:4px 0;
  background-image:linear-gradient(var(--brand),var(--brand));
  background-repeat:no-repeat;background-size:0% 2px;background-position:0 100%;
  transition:background-size .2s ease;
}
.foot-link:hover{background-size:100% 2px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.10);margin-top:48px;padding-top:20px;
  font-size:13px;color:var(--dark-ink-2);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
}

/* 底部固定转化条 */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  height:56px;display:flex;align-items:center;
  padding:0 20px calc(env(safe-area-inset-bottom,0px)) 20px;
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (min-width:1024px){
  .bottom-bar{opacity:0;pointer-events:none;transition:opacity .3s ease;}
  .bottom-bar.is-visible{opacity:1;pointer-events:auto;}
}
@media (max-width:1023px){
  .bottom-bar{opacity:1;pointer-events:auto;}
}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .48s cubic-bezier(.22,.61,.36,1),transform .48s cubic-bezier(.22,.61,.36,1);}
.reveal.is-in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none!important;transition:none!important;}
}

/* roulang page: category1 */
:root{
    --bg:#F6F5F1;
    --surface:#FFFFFF;
    --surface-2:#EFEDE7;
    --ink:#101114;
    --ink-2:#5A5D66;
    --ink-3:#8B8E96;
    --brand:#B7F135;
    --brand-ink:#101114;
    --accent:#FF5A28;
    --dark:#111318;
    --dark-ink:#F6F5F1;
    --dark-ink-2:#A7ABB4;
    --line:#E3E1DA;
    --line-dark:rgba(255,255,255,.10);
    --r-sm:8px;
    --r-btn:10px;
    --r-card:16px;
    --r-box:24px;
    --shadow-1:0 1px 2px rgba(16,17,20,.06);
    --shadow-2:0 12px 32px -12px rgba(16,17,20,.18);
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::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:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.8;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  img{ max-width:100%; display:block; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
  ul,ol{ margin:0; padding:0; list-style:none; }
  h1,h2,h3,h4,p{ margin:0; }

  :focus-visible{
    outline:2px solid var(--brand);
    outline-offset:2px;
    border-radius:4px;
  }

  .container-x{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:40px;
    padding-right:40px;
  }

  /* ---------- 排版 ---------- */
  .h1{ font-size:clamp(34px,5.2vw,62px); font-weight:800; line-height:1.06; letter-spacing:-.02em; }
  .h2{ font-size:clamp(24px,3vw,36px); font-weight:700; line-height:1.2; letter-spacing:-.015em; }
  .h3{ font-size:20px; font-weight:700; line-height:1.45; }
  .h4{ font-size:17px; font-weight:600; line-height:1.5; }
  .body-1{ font-size:16px; line-height:1.8; }
  .body-2{ font-size:14px; line-height:1.7; }
  .meta{ font-size:13px; line-height:1.5; }
  .muted{ color:var(--ink-2); }
  .muted-3{ color:var(--ink-3); }

  .section{ padding-top:96px; padding-bottom:96px; }
  .section-tight{ padding-top:64px; padding-bottom:64px; }
  .rule{ height:1px; background:var(--line); border:0; }

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(246,245,241,.92);
    backdrop-filter:saturate(160%) blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav-top{
    display:flex;
    align-items:center;
    gap:24px;
    height:64px;
    transition:height .24s var(--ease);
  }
  .site-header.is-stuck .nav-top{ height:56px; }

  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
  }
  .logo-mark{
    width:28px;
    height:28px;
    border:2px solid var(--brand);
    border-radius:var(--r-sm);
    position:relative;
    flex-shrink:0;
  }
  .logo-mark::before{
    content:"";
    position:absolute;
    left:8px; top:7px;
    width:8px; height:2px;
    background:var(--brand);
  }
  .logo-mark::after{
    content:"";
    position:absolute;
    left:13px; top:6px;
    width:5px; height:5px;
    border-top:2px solid var(--brand);
    border-right:2px solid var(--brand);
    transform:rotate(45deg);
  }
  .logo-text{
    font-size:17px;
    font-weight:800;
    letter-spacing:-.01em;
    white-space:nowrap;
  }

  .searchbox{
    display:flex;
    align-items:center;
    gap:8px;
    width:100%;
    max-width:400px;
    height:40px;
    padding:0 14px;
    background:var(--surface-2);
    border:1px solid transparent;
    border-radius:999px;
    color:var(--ink-3);
    transition:border-color .2s var(--ease), background .2s var(--ease);
  }
  .searchbox:focus-within{
    border-color:var(--brand);
    background:var(--surface);
    box-shadow:0 0 0 2px rgba(183,241,53,.55);
  }
  .searchbox input{
    flex:1;
    min-width:0;
    height:100%;
    border:0;
    background:transparent;
    font-size:14px;
    color:var(--ink);
  }
  .searchbox input::placeholder{ color:var(--ink-3); }
  .searchbox input:focus{ outline:none; }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:44px;
    padding:0 24px;
    border-radius:999px;
    font-size:16px;
    font-weight:700;
    white-space:nowrap;
    transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
  }
  .btn-primary{
    background:var(--brand);
    color:var(--brand-ink);
    box-shadow:var(--shadow-1);
  }
  .btn-primary:hover{ transform:translateY(-1px); box-shadow:var(--shadow-2); }
  .btn-primary:active{ transform:translateY(1px); filter:brightness(.94); }

  .btn-ghost{
    border:1px solid var(--ink);
    color:var(--ink);
    border-radius:var(--r-btn);
    background:transparent;
  }
  .btn-ghost:hover{ background:var(--ink); color:var(--dark-ink); }
  .btn-ghost:active{ transform:translateY(1px); }

  .btn-sm{ height:40px; padding:0 20px; font-size:14px; }

  .nav-cta{ margin-left:auto; }

  .nav-tabs{
    display:flex;
    align-items:center;
    gap:8px;
    height:52px;
    overflow-x:auto;
    scroll-snap-type:x proximity;
    scrollbar-width:none;
    -ms-overflow-style:none;
    border-top:1px solid var(--line);
  }
  .nav-tabs::-webkit-scrollbar{ display:none; }
  .tab{
    flex:0 0 auto;
    scroll-snap-align:start;
    display:inline-flex;
    align-items:center;
    height:36px;
    padding:0 16px;
    border-radius:999px;
    font-size:14px;
    font-weight:600;
    color:var(--ink-2);
    transition:background .2s var(--ease), color .2s var(--ease);
  }
  .tab:hover{ background:var(--surface-2); color:var(--ink); }
  .tab.is-active{ background:var(--ink); color:var(--brand); }

  .nav-toggle{
    display:none;
    width:44px; height:44px;
    align-items:center;
    justify-content:center;
    border-radius:var(--r-btn);
    border:1px solid var(--line);
    background:var(--surface);
  }

  /* ---------- 面包屑 / Hero ---------- */
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--ink-2);
  }
  .breadcrumb .sep{ color:var(--ink-3); }
  .breadcrumb .current{ color:var(--ink); font-weight:600; }
  .breadcrumb a:hover{ color:var(--ink); text-decoration:underline; text-decoration-color:var(--brand); text-decoration-thickness:2px; text-underline-offset:3px; }

  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:30px;
    padding:0 14px;
    border-radius:999px;
    background:rgba(183,241,53,.22);
    color:var(--brand-ink);
    font-size:13px;
    font-weight:700;
    letter-spacing:.01em;
  }

  .hero-media{
    position:relative;
    overflow:hidden;
    border-radius:var(--r-box);
    background:var(--surface-2);
  }
  .hero-media img{
    width:100%;
    height:100%;
    object-fit:cover;
    aspect-ratio:16/9;
    transition:transform .45s var(--ease);
  }
  .hero-media:hover img{ transform:scale(1.03); }
  .corner-frame{
    position:absolute;
    left:14px; top:14px;
    width:44px; height:44px;
    border-left:2px solid var(--brand);
    border-top:2px solid var(--brand);
    pointer-events:none;
  }
  .corner-index{
    position:absolute;
    right:14px; top:14px;
    padding:4px 10px;
    border-radius:999px;
    background:var(--brand);
    color:var(--brand-ink);
    font-size:13px;
    font-weight:800;
  }

  .kv-row{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:16px;
    font-size:13px;
    color:var(--ink-3);
  }
  .kv-row .vd{ width:1px; height:14px; background:var(--line); }

  /* ---------- 步骤流 ---------- */
  .steps{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:24px;
    counter-reset:step;
  }
  .step{
    position:relative;
    padding-top:24px;
    border-top:2px solid var(--brand);
  }
  .step::before{
    content:"";
    position:absolute;
    left:0; top:-2px;
    width:calc(100% + 24px);
    height:1px;
    background:var(--line);
  }
  .step:last-child::before{ width:0; }
  .step-num{
    display:block;
    font-size:28px;
    font-weight:800;
    line-height:1;
    color:var(--brand);
    letter-spacing:-.02em;
    margin-bottom:14px;
  }
  .step h3{ margin-bottom:8px; }

  /* ---------- 卡片 ---------- */
  .card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-1);
    transition:transform .24s var(--ease), box-shadow .24s var(--ease);
  }
  .card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-2); }

  .checklist{ display:flex; flex-direction:column; gap:14px; }
  .checklist li{
    display:flex;
    gap:12px;
    align-items:flex-start;
    font-size:16px;
    line-height:1.7;
    color:var(--ink-2);
  }
  .checklist li strong{ color:var(--ink); font-weight:700; }
  .tick{
    flex:0 0 auto;
    width:20px; height:20px;
    margin-top:5px;
    border-radius:6px;
    background:rgba(183,241,53,.35);
    position:relative;
  }
  .tick::after{
    content:"";
    position:absolute;
    left:5px; top:4px;
    width:9px; height:5px;
    border-left:2px solid var(--ink);
    border-bottom:2px solid var(--ink);
    transform:rotate(-45deg);
  }

  .tip-card{
    background:var(--surface-2);
    border:1px solid var(--line);
    border-top:2px solid var(--brand);
    border-radius:var(--r-card);
    padding:28px;
  }

  /* ---------- 数据条 ---------- */
  .stat-row{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:24px;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:32px 0;
  }
  .stat-num{
    font-size:clamp(28px,4vw,44px);
    font-weight:800;
    line-height:1;
    letter-spacing:-.02em;
    color:var(--ink);
  }
  .stat-num .dot{ color:var(--accent); }

  /* ---------- FAQ ---------- */
  .faq{ max-width:760px; margin:0 auto; }
  .faq-item{ border-bottom:1px solid var(--line); }
  .faq-q{
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:20px;
    width:100%;
    padding:20px 0;
    text-align:left;
    font-size:16px;
    font-weight:700;
    line-height:1.6;
    color:var(--ink);
  }
  .faq-q:hover{ color:var(--ink); }
  .faq-icon{
    flex:0 0 auto;
    width:22px; height:22px;
    position:relative;
    margin-top:4px;
    transition:transform .24s var(--ease);
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--ink);
    transition:background .24s var(--ease);
  }
  .faq-icon::before{ left:0; top:10px; width:22px; height:2px; }
  .faq-icon::after{ left:10px; top:0; width:2px; height:22px; }
  .faq-q[aria-expanded="true"] .faq-icon{ transform:rotate(45deg); }
  .faq-q[aria-expanded="true"] .faq-icon::before,
  .faq-q[aria-expanded="true"] .faq-icon::after{ background:var(--brand); }
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .24s var(--ease);
  }
  .faq-a p{
    font-size:14px;
    line-height:1.8;
    color:var(--ink-2);
    padding-bottom:20px;
  }

  /* ---------- CTA 条 ---------- */
  .cta-band{
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:var(--r-box);
    padding:40px;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:24px;
  }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--dark);
    color:var(--dark-ink);
    padding:72px 0 32px;
    margin-top:96px;
  }
  .foot-title{
    font-size:13px;
    color:var(--dark-ink-2);
    letter-spacing:.04em;
    margin-bottom:16px;
    font-weight:600;
  }
  .foot-link{
    font-size:14px;
    color:var(--dark-ink);
    display:inline-block;
    transition:color .2s var(--ease);
  }
  .foot-link:hover{
    color:var(--brand);
    text-decoration:underline;
    text-decoration-color:var(--brand);
    text-decoration-thickness:2px;
    text-underline-offset:3px;
  }
  .foot-bottom{
    margin-top:48px;
    padding-top:20px;
    border-top:1px solid var(--line-dark);
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:12px;
    font-size:13px;
    color:var(--dark-ink-2);
  }

  /* ---------- 移动端底部条 ---------- */
  .mobile-bar{
    position:fixed;
    left:0; right:0; bottom:0;
    z-index:70;
    display:none;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    height:56px;
    padding:0 16px calc(env(safe-area-inset-bottom, 0px));
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(8px);
    border-top:1px solid var(--line);
  }

  /* ---------- 抽屉 ---------- */
  .drawer{
    position:fixed;
    inset:0;
    z-index:90;
    background:var(--surface);
    transform:translateY(100%);
    transition:transform .24s var(--ease);
    overflow-y:auto;
    padding:20px;
    display:none;
  }
  .drawer.is-open{ transform:translateY(0); }

  .reveal{ opacity:0; transform:translateY(16px); transition:opacity .48s var(--ease), transform .48s var(--ease); }
  .reveal.is-in{ opacity:1; transform:none; }

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .container-x{ padding-left:28px; padding-right:28px; }
    .section{ padding-top:72px; padding-bottom:72px; }
    .steps{ grid-template-columns:repeat(2,minmax(0,1fr)); }
    .step::before{ width:calc(100% + 24px); }
    .stat-row{ grid-template-columns:repeat(2,minmax(0,1fr)); }
    .searchbox{ max-width:280px; }
  }

  @media (max-width:767px){
    .container-x{ padding-left:20px; padding-right:20px; }
    .section{ padding-top:56px; padding-bottom:56px; }
    .nav-top{ height:56px; gap:12px; }
    .site-header.is-stuck .nav-top{ height:52px; }
    .searchbox{ display:none; }
    .nav-toggle{ display:inline-flex; }
    .drawer{ display:block; }
    .nav-tabs{ height:48px; }
    .steps{ grid-template-columns:1fr; gap:32px; }
    .step{ padding-left:56px; padding-top:0; }
    .step::before{
      left:26px; top:0;
      width:1px;
      height:calc(100% + 32px);
    }
    .step:last-child::before{ height:0; }
    .step-num{
      position:absolute;
      left:0; top:0;
      width:56px;
      text-align:left;
      margin-bottom:0;
    }
    .stat-row{ grid-template-columns:1fr 1fr; gap:16px; }
    .cta-band{ padding:28px; }
    .mobile-bar{ display:flex; }
    body{ padding-bottom:72px; }
    .site-footer{ margin-top:56px; padding-top:56px; }
  }

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      animation-duration:.001ms !important;
      transition-duration:.001ms !important;
      scroll-behavior:auto !important;
    }
    .reveal{ opacity:1; transform:none; }
  }

/* roulang page: article */
:root{
  --bg:#F6F5F1; --surface:#FFFFFF; --surface-2:#EFEDE7;
  --ink:#101114; --ink-2:#5A5D66; --ink-3:#8B8E96;
  --brand:#B7F135; --brand-ink:#101114; --accent:#FF5A28;
  --dark:#111318; --dark-ink:#F6F5F1; --dark-ink-2:#A7ABB4;
  --line:#E3E1DA;
  --r-xs:8px; --r-btn:10px; --r-card:16px; --r-big:24px; --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,17,20,.06);
  --shadow-2:0 12px 32px -12px rgba(16,17,20,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand);color:var(--brand-ink)}

.container-x{max-width:1200px;margin:0 auto;padding:0 40px}
@media (max-width:1024px){.container-x{padding:0 28px}}
@media (max-width:640px){.container-x{padding:0 20px}}

.body-2{font-size:14px;line-height:1.7}
.mt-4{margin-top:16px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,241,.88);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line)}
.head-top{display:flex;align-items:center;gap:24px;height:64px;transition:height .24s var(--ease)}
.site-header.is-stuck .head-top{height:56px}

.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:16px;letter-spacing:-.02em;white-space:nowrap}
.logo-mark{
  position:relative;flex:0 0 auto;width:26px;height:26px;
  border:2px solid var(--brand);border-radius:5px;background:transparent;
}
.logo-mark::before{
  content:"";position:absolute;left:6px;top:50%;width:10px;height:2px;
  background:var(--ink);transform:translateY(-50%);
}
.logo-mark::after{
  content:"";position:absolute;right:5px;top:50%;width:7px;height:7px;
  border-top:2px solid var(--ink);border-right:2px solid var(--ink);
  transform:translateY(-50%) rotate(45deg);
}
.logo-text{color:var(--ink)}

.head-search{position:relative;flex:1 1 auto;max-width:420px;min-width:0}
.head-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--ink-3);pointer-events:none}
.head-search input{
  width:100%;height:40px;padding:0 16px 0 40px;font-size:14px;
  background:var(--surface-2);border:1px solid transparent;border-radius:var(--r-pill);
  transition:box-shadow .2s,border-color .2s,background .2s;
}
.head-search input::placeholder{color:var(--ink-3)}
.head-search input:focus{outline:none;background:var(--surface);border-color:var(--brand);box-shadow:0 0 0 2px rgba(183,241,53,.6)}

.head-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--r-pill);cursor:pointer;
  background:var(--surface-2);border:1px solid transparent;color:var(--ink);
  transition:background .2s,transform .2s,box-shadow .2s;
}
.icon-btn:hover{background:#E5E2DA;transform:translateY(-1px)}
.icon-btn:active{transform:translateY(1px)}
.icon-btn svg{width:18px;height:18px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:14px;font-weight:700;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s,color .2s,border-color .2s;
}
.btn-primary{background:var(--brand);color:var(--brand-ink);border-radius:var(--r-pill)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--dark-ink)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 20px}

.nav-tabs-wrap{border-top:1px solid var(--line);position:relative}
.nav-tabs-wrap::after{
  content:"";position:absolute;top:0;right:0;bottom:0;width:48px;pointer-events:none;
  background:linear-gradient(90deg,rgba(246,245,241,0),rgba(246,245,241,.95));
}
.nav-tabs{
  display:flex;gap:8px;overflow-x:auto;padding:8px 0;
  scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:var(--r-pill);font-size:14px;color:var(--ink-2);
  scroll-snap-align:start;transition:background .2s,color .2s;
}
.tab:hover{background:var(--surface-2);color:var(--ink)}
.tab.is-active{background:var(--ink);color:var(--brand)}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;line-height:1.5;color:var(--ink-2);
  padding:32px 0 0;
}
.crumbs a{color:var(--ink-2);transition:color .2s}
.crumbs a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--brand);text-decoration-thickness:2px;text-underline-offset:3px}
.crumb-sep{color:var(--ink-3)}
.crumb-now{color:var(--ink);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60%}
@media (max-width:640px){.crumb-now{max-width:100%;white-space:normal}}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:64px;align-items:start;padding-top:32px;padding-bottom:96px;
}
.article-main{min-width:0}

.article-head{padding-bottom:24px;border-bottom:1px solid var(--line)}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(183,241,53,.15);color:var(--brand-ink);
}
.article-head .badge{margin-bottom:16px}
.article-head h1{
  font-size:clamp(26px,3.4vw,40px);line-height:1.24;font-weight:800;
  letter-spacing:-.02em;color:var(--ink);scroll-margin-top:96px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:16px;font-size:13px;line-height:1.5;color:var(--ink-3);
  font-variant-numeric:tabular-nums;
}
.article-meta .sep{width:1px;height:12px;background:var(--line)}

/* ============ 正文排版 ============ */
.article-body{font-size:18px;line-height:1.9;color:#1B1D22;padding-top:32px;max-width:760px}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--brand);text-decoration-thickness:2px;text-underline-offset:3px}
.article-body a:hover{background:rgba(183,241,53,.25)}
.article-body h2{
  font-size:clamp(22px,2.6vw,28px);line-height:1.35;font-weight:700;
  margin:40px 0 16px;padding-left:14px;border-left:3px solid var(--brand);
  scroll-margin-top:96px;
}
.article-body h3{font-size:20px;line-height:1.45;font-weight:700;margin:32px 0 12px;scroll-margin-top:96px}
.article-body h4{font-size:17px;line-height:1.5;font-weight:600;margin:24px 0 10px}
.article-body ul{margin:0 0 1.2em}
.article-body ul > li{position:relative;padding-left:22px;line-height:1.85;margin-bottom:8px}
.article-body ul > li::before{
  content:"";position:absolute;left:4px;top:.78em;width:8px;height:8px;
  background:var(--brand);border-radius:2px;transform:translateY(-50%);
}
.article-body ol{counter-reset:ol;margin:0 0 1.2em}
.article-body ol > li{counter-increment:ol;position:relative;padding-left:30px;line-height:1.85;margin-bottom:8px}
.article-body ol > li::before{
  content:counter(ol,decimal-leading-zero);position:absolute;left:0;top:0;
  font-size:14px;font-weight:700;line-height:1.9;color:var(--ink);
  background:rgba(183,241,53,.5);border-radius:4px;padding:0 5px;
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;padding:20px 24px;background:var(--surface-2);
  border-left:3px solid var(--brand);border-radius:var(--r-card);color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:24px auto;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption,
.article-body .caption{font-size:13px;line-height:1.5;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body code{
  background:var(--surface-2);border-radius:6px;padding:2px 6px;
  font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.article-body pre{
  background:var(--surface-2);border:1px solid var(--line);border-radius:12px;
  padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body pre code{background:none;padding:0}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;
  border:1px solid var(--line);border-radius:12px;font-size:14px;
  margin:24px 0;background:var(--surface);
}
.article-body thead th{background:rgba(183,241,53,.18);text-align:left}
.article-body th,.article-body td{padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.article-body tbody tr:last-child td{border-bottom:none}
.article-body hr{border:none;border-top:1px solid var(--line);margin:40px 0}

/* 空态 */
.notfound{
  padding:48px 32px;text-align:center;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);
}
.notfound .nf-title{font-size:20px;font-weight:700;margin-bottom:8px}
.notfound p{font-size:16px;color:var(--ink-2);margin:0 0 16px}
.notfound .btn{margin-top:8px}

/* ============ 文末 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--surface-2);color:var(--ink-2);
  font-size:13px;transition:background .2s,color .2s,transform .2s;
}
.tag:hover{background:rgba(183,241,53,.35);color:var(--ink);transform:translateY(-1px)}

.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.block-title{font-size:clamp(20px,2.2vw,26px);line-height:1.3;font-weight:700}
.link-arrow{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink);white-space:nowrap;padding-bottom:2px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1)}
.link-arrow span{transition:transform .2s var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}

.continue-block{margin-top:56px}
.continue-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.ccard{
  display:flex;flex-direction:column;gap:8px;padding:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);position:relative;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s;
}
.ccard::before{content:"";position:absolute;left:24px;right:24px;top:0;height:2px;background:var(--brand);border-radius:2px}
.ccard:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.ccard-label{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.ccard-title{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink)}
.ccard:hover .ccard-title{text-decoration:underline;text-decoration-color:var(--brand);text-decoration-thickness:2px;text-underline-offset:3px}
.ccard-arrow{font-size:14px;color:var(--ink-3);transition:transform .2s var(--ease),color .2s}
.ccard:hover .ccard-arrow{transform:translateX(4px);color:var(--ink)}

.related-block{margin-top:56px}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.rel-media{aspect-ratio:4/3;overflow:hidden;background:var(--surface-2)}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rel-card:hover .rel-media img{transform:scale(1.03)}
.rel-body{display:flex;flex-direction:column;gap:8px;padding:16px}
.rel-title{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card:hover .rel-title{text-decoration:underline;text-decoration-color:var(--brand);text-decoration-thickness:2px;text-underline-offset:3px}
.rel-desc{font-size:14px;line-height:1.7;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-meta{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}

.back-row{margin-top:40px}
.back-link{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:700;color:var(--ink);padding-bottom:2px;
}
.back-link::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.back-link:hover::after{transform:scaleX(1)}
.back-link span{transition:transform .2s var(--ease)}
.back-link:hover span{transform:translateX(-4px)}

/* ============ 侧栏 ============ */
.article-side{
  position:sticky;top:112px;display:flex;flex-direction:column;gap:24px;
  align-self:start;
}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-1);
}
.side-title{
  font-size:13px;font-weight:700;color:var(--ink-3);letter-spacing:.04em;
  margin-bottom:12px;
}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-link{
  display:block;font-size:14px;line-height:1.7;color:var(--ink-2);
  padding:6px 0 6px 12px;border-left:2px solid transparent;
  transition:color .2s,border-color .2s,background .2s;
}
.toc-link:hover{color:var(--ink);border-left-color:var(--brand)}
.toc-link.is-current{color:var(--ink);font-weight:600;border-left-color:var(--brand)}

.side-cta{
  background:var(--surface-2);border:1px solid var(--line);
  border-top:2px solid var(--brand);border-radius:var(--r-card);padding:20px;
}
.side-cta h3{font-size:17px;line-height:1.5;font-weight:700;margin-bottom:8px}
.side-cta p{font-size:14px;line-height:1.7;color:var(--ink-2);margin-bottom:16px}

/* ============ 底部转化区 ============ */
.dark-cta{
  position:relative;overflow:hidden;background:var(--dark);color:var(--dark-ink);
  padding:96px 0;text-align:center;margin-top:96px;
}
.dark-cta::before,
.dark-cta::after{
  content:"";position:absolute;top:-40%;width:46%;height:180%;pointer-events:none;
  background:linear-gradient(90deg,rgba(183,241,53,.08),rgba(183,241,53,0));
  transform:rotate(12deg);
}
.dark-cta::before{left:-14%}
.dark-cta::after{right:-14%;transform:rotate(-12deg)}
.dark-cta h2{
  font-size:clamp(24px,3vw,36px);line-height:1.2;font-weight:700;
  letter-spacing:-.02em;margin-bottom:16px;position:relative;
}
.dark-cta p{font-size:14px;line-height:1.7;color:var(--dark-ink-2);margin-bottom:28px;position:relative}
.dark-cta .btn{position:relative}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--dark-ink);padding:72px 0 32px}
.foot-title{font-size:13px;color:var(--dark-ink-2);letter-spacing:.04em;font-weight:700;margin-bottom:12px}
.foot-link{
  position:relative;display:inline-block;font-size:14px;color:var(--dark-ink);
  padding:2px 0;transition:color .2s;
}
.foot-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);
  transition:width .2s var(--ease);
}
.foot-link:hover{color:var(--brand)}
.foot-link:hover::after{width:100%}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;line-height:1.5;color:var(--dark-ink-2);
}

/* ============ 底部固定转化条 ============ */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  height:56px;padding:0 20px calc(0px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-2);
}
@media (max-width:1023px){body{padding-bottom:72px}}
@media (min-width:1024px){
  .mobile-bar{
    opacity:0;transform:translateY(12px);pointer-events:none;
    transition:opacity .3s var(--ease),transform .3s var(--ease);
  }
  .mobile-bar.is-visible{opacity:1;transform:none;pointer-events:auto}
}

/* ============ 抽屉 / 搜索层 ============ */
.drawer{
  position:fixed;inset:0;z-index:95;background:#fff;
  display:flex;flex-direction:column;
  padding:20px 20px calc(24px + env(safe-area-inset-bottom));
  opacity:0;transform:translateY(24px);pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.drawer.is-open{opacity:1;transform:none;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;padding:20px 0;flex:1 1 auto;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:17px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-nav a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--brand);text-decoration-thickness:2px;text-underline-offset:4px}
.drawer-nav a span{color:var(--ink-3);font-size:14px}
.drawer-foot{display:flex;flex-direction:column;gap:12px}

.search-layer{
  position:fixed;inset:0;z-index:96;background:rgba(246,245,241,.98);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  display:flex;flex-direction:column;padding:24px 20px;
  opacity:0;transform:translateY(16px);pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.search-layer.is-open{opacity:1;transform:none;pointer-events:auto}
.search-layer .sl-top{display:flex;align-items:center;gap:12px}
.search-layer input{
  flex:1 1 auto;height:44px;padding:0 16px;font-size:14px;
  background:var(--surface-2);border:1px solid transparent;border-radius:var(--r-btn);
}
.search-layer input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(183,241,53,.6)}
.sl-hints{margin-top:24px}
.sl-hints p{font-size:13px;color:var(--ink-3);margin-bottom:10px}
.sl-hints a{
  display:inline-block;margin:0 8px 8px 0;padding:8px 14px;font-size:14px;
  background:var(--surface-2);border-radius:var(--r-pill);color:var(--ink-2);
  transition:background .2s,color .2s;
}
.sl-hints a:hover{background:rgba(183,241,53,.35);color:var(--ink)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .article-layout{grid-template-columns:1fr;gap:40px;padding-bottom:72px}
  .article-side{position:static;top:auto}
  .head-search{display:none}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-body{max-width:none}
}
@media (min-width:1024px){
  .menu-btn{display:none}
}
@media (max-width:767px){
  .continue-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .dark-cta{padding:64px 0;margin-top:64px}
  .logo-text{font-size:14px}
  .head-top{gap:12px}
  .btn-sm{padding:0 16px}
}
@media (max-width:520px){
  .article-head h1{font-size:26px}
  .article-body{font-size:18px}
  .crumbs{padding-top:24px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
    --bg:#F6F5F1;
    --surface:#FFFFFF;
    --surface-2:#EFEDE7;
    --ink:#101114;
    --ink-2:#5A5D66;
    --ink-3:#8B8E96;
    --brand:#B7F135;
    --brand-ink:#101114;
    --accent:#FF5A28;
    --dark:#111318;
    --dark-ink:#F6F5F1;
    --dark-ink-2:#A7ABB4;
    --line:#E3E1DA;
    --r-sm:8px;
    --r-btn:10px;
    --r-card:16px;
    --r-lg:24px;
    --r-pill:999px;
    --shadow-1:0 1px 2px rgba(16,17,20,.06);
    --shadow-2:0 12px 32px -12px rgba(16,17,20,.18);
    --ease:cubic-bezier(.22,.61,.36,1);
    --nav-h:96px;
  }

  *,*::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:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
  input{font:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
  ul,ol{list-style:none;}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

  .container-x{max-width:1200px;margin:0 auto;padding:0 40px;width:100%;}
  @media (max-width:1024px){.container-x{padding:0 28px;}}
  @media (max-width:640px){.container-x{padding:0 20px;}}

  /* ---------- 排版 ---------- */
  .h1{font-size:clamp(34px,5.2vw,62px);font-weight:800;line-height:1.06;letter-spacing:-.02em;}
  .h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.2;letter-spacing:-.01em;}
  .h3{font-size:20px;font-weight:700;line-height:1.45;}
  .h4{font-size:17px;font-weight:600;line-height:1.5;}
  .body-2{font-size:14px;line-height:1.7;}
  .meta{font-size:13px;line-height:1.5;color:var(--ink-3);}
  .muted{color:var(--ink-2);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    height:30px;padding:0 14px;border-radius:var(--r-pill);
    background:rgba(183,241,53,.28);color:var(--brand-ink);
    font-size:13px;font-weight:600;line-height:1;
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:2px;background:var(--brand);display:inline-block;}

  /* ---------- 按钮 ---------- */
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 24px;border-radius:var(--r-pill);
    background:var(--brand);color:var(--brand-ink);
    font-size:16px;font-weight:700;white-space:nowrap;
    box-shadow:var(--shadow-1);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
  }
  .btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-2);}
  .btn-primary:active{transform:translateY(1px);filter:brightness(.94);}
  .btn-primary.btn-sm{height:40px;padding:0 20px;font-size:14px;}

  .btn-outline{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--r-btn);
    border:1px solid var(--ink);color:var(--ink);background:transparent;
    font-size:16px;font-weight:600;white-space:nowrap;
    transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  .btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
  .btn-outline:active{transform:translateY(1px);}
  .btn-outline.btn-sm{height:40px;padding:0 18px;font-size:14px;}

  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:600;color:var(--ink);position:relative;
  }
  .link-arrow::after{
    content:"";position:absolute;left:0;bottom:-3px;height:2px;width:100%;
    background:var(--brand);transform:scaleX(0);transform-origin:left;
    transition:transform .2s var(--ease);
  }
  .link-arrow:hover::after{transform:scaleX(1);}
  .link-arrow .ar{transition:transform .2s var(--ease);}
  .link-arrow:hover .ar{transform:translateX(4px);}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(246,245,241,.92);
    backdrop-filter:blur(10px);
    border-bottom:1px solid transparent;
    transition:border-color .2s var(--ease);
  }
  .site-header.is-stuck{border-bottom-color:var(--line);}
  .header-top-inner{display:flex;align-items:center;gap:20px;height:64px;transition:height .24s var(--ease);}
  .site-header.is-stuck .header-top-inner{height:56px;}

  .logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{
    position:relative;width:26px;height:26px;border-radius:4px;
    border:2px solid var(--brand);display:inline-block;flex-shrink:0;
  }
  .logo-mark::before{
    content:"";position:absolute;left:6px;top:11px;width:10px;height:2px;background:var(--brand);
  }
  .logo-mark::after{
    content:"";position:absolute;right:5px;top:8px;width:6px;height:6px;
    border-top:2px solid var(--brand);border-right:2px solid var(--brand);transform:rotate(45deg);
  }
  .logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--ink);line-height:1.2;}

  .search-box{
    position:relative;display:flex;align-items:center;
    width:100%;max-width:400px;height:40px;margin-left:auto;
    background:var(--surface-2);border:1px solid transparent;border-radius:var(--r-btn);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .search-box svg{margin:0 10px 0 14px;flex-shrink:0;color:var(--ink-3);}
  .search-box input{
    flex:1;height:100%;border:none;background:transparent;padding-right:14px;
    font-size:14px;color:var(--ink);outline:none;
  }
  .search-box input::placeholder{color:var(--ink-3);}
  .search-box:focus-within{background:var(--surface);box-shadow:0 0 0 2px var(--brand);}

  .header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .icon-btn{
    width:40px;height:40px;border-radius:var(--r-btn);display:inline-flex;
    align-items:center;justify-content:center;color:var(--ink-2);
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .icon-btn:hover{background:var(--surface-2);color:var(--ink);}
  .search-toggle,.menu-toggle{display:none;}

  .header-tabs{border-top:1px solid var(--line);position:relative;}
  .nav-tabs{
    display:flex;gap:8px;overflow-x:auto;scroll-snap-type:x proximity;
    padding:10px 0;scrollbar-width:none;-ms-overflow-style:none;
  }
  .nav-tabs::-webkit-scrollbar{display:none;}
  .tab{
    flex:0 0 auto;scroll-snap-align:start;
    display:inline-flex;align-items:center;height:36px;padding:0 16px;
    border-radius:var(--r-pill);font-size:14px;font-weight:600;color:var(--ink-2);
    transition:background .2s var(--ease),color .2s var(--ease);
    white-space:nowrap;
  }
  .tab:hover{background:var(--surface-2);color:var(--ink);}
  .tab.is-active{background:var(--ink);color:var(--brand);}
  .tab.is-active:hover{background:var(--ink);color:var(--brand);}

  /* ---------- 面包屑 ---------- */
  .crumb{padding-top:28px;font-size:13px;color:var(--ink-2);line-height:1.6;display:flex;flex-wrap:wrap;gap:6px;}
  .crumb a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--brand);text-decoration-thickness:2px;}
  .crumb .sep{color:var(--ink-3);}
  .crumb .now{color:var(--ink);font-weight:600;}

  /* ---------- Hero ---------- */
  .page-hero{padding:24px 0 56px;border-bottom:1px solid var(--line);}
  .hero-inner{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:end;}
  .hero-lead{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:34em;}
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;
    border-radius:var(--r-pill);background:rgba(183,241,53,.28);
    font-size:13px;font-weight:600;color:var(--brand-ink);
  }
  .hero-figure{
    position:relative;border-radius:var(--r-lg);overflow:hidden;
    border:1px solid var(--line);background:var(--surface-2);
  }
  .hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
  .hero-figure:hover img{transform:scale(1.03);}

  /* ---------- 分栏布局 ---------- */
  .split{
    display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:40px;align-items:start;
    padding:64px 0 24px;
  }
  .side-card{
    background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-card);
    padding:24px;
  }
  @media (min-width:1024px){
    .side-sticky{position:sticky;top:112px;}
  }
  .side-title{font-size:17px;font-weight:700;line-height:1.4;}
  .side-list{margin-top:16px;display:flex;flex-direction:column;gap:12px;}
  .side-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--ink-2);}
  .tick{
    flex-shrink:0;width:18px;height:18px;margin-top:3px;border-radius:4px;
    background:var(--brand);position:relative;
  }
  .tick::after{
    content:"";position:absolute;left:5px;top:4px;width:6px;height:9px;
    border-right:2px solid var(--brand-ink);border-bottom:2px solid var(--brand-ink);
    transform:rotate(40deg);
  }

  /* ---------- 信息块 ---------- */
  .block{margin-bottom:40px;}
  .block-head{display:flex;align-items:baseline;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line);}
  .block-index{
    font-size:13px;font-weight:700;color:var(--brand-ink);
    background:var(--brand);border-radius:var(--r-pill);padding:2px 10px;line-height:1.6;
  }
  .block-body{padding-top:20px;}
  .block-body p + p{margin-top:14px;}
  .block-body p{color:var(--ink-2);}
  .key-line{color:var(--ink);font-weight:600;}

  .figure-inline{
    margin-top:22px;border-radius:var(--r-lg);overflow:hidden;
    border:1px solid var(--line);background:var(--surface-2);
  }
  .figure-inline img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .figure-cap{padding:12px 16px;font-size:13px;color:var(--ink-3);background:var(--surface);}

  /* ---------- 对比两栏 ---------- */
  .compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:22px;}
  .compare-col{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px;box-shadow:var(--shadow-1);
  }
  .compare-col.attention{border-top:2px solid var(--accent);}
  .compare-title{font-size:17px;font-weight:700;display:flex;align-items:center;gap:8px;}
  .compare-tag{
    font-size:13px;font-weight:600;border-radius:var(--r-pill);padding:2px 10px;line-height:1.6;
    background:rgba(183,241,53,.3);color:var(--brand-ink);
  }
  .compare-tag.warn{background:rgba(255,90,40,.12);color:#C33A10;}
  .compare-col ul{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
  .compare-col li{font-size:14px;line-height:1.7;color:var(--ink-2);display:flex;gap:10px;}
  .bullet{flex-shrink:0;width:6px;height:6px;border-radius:2px;background:var(--brand);margin-top:9px;}
  .compare-col.attention .bullet{background:var(--accent);}

  /* ---------- 编号条目 ---------- */
  .note-list{margin-top:22px;display:flex;flex-direction:column;}
  .note-item{
    display:flex;gap:18px;padding:18px 0;border-top:1px solid var(--line);
  }
  .note-item:last-child{border-bottom:1px solid var(--line);}
  .note-num{
    flex-shrink:0;width:44px;font-size:20px;font-weight:800;color:var(--brand);
    line-height:1.4;letter-spacing:-.02em;
  }
  .note-text{font-size:14px;line-height:1.8;color:var(--ink-2);}
  .note-text strong{display:block;font-size:17px;font-weight:600;color:var(--ink);margin-bottom:4px;}

  /* ---------- 折叠答疑 ---------- */
  .qa{margin-top:26px;border-top:1px solid var(--line);}
  .qa details{border-bottom:1px solid var(--line);}
  .qa summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
    gap:16px;padding:16px 0;font-size:16px;font-weight:600;color:var(--ink);
  }
  .qa summary::-webkit-details-marker{display:none;}
  .qa summary .plus{
    flex-shrink:0;width:22px;height:22px;position:relative;
    transition:transform .24s var(--ease);
  }
  .qa summary .plus::before,
  .qa summary .plus::after{
    content:"";position:absolute;background:var(--brand-ink);border-radius:2px;
  }
  .qa summary .plus::before{left:0;top:10px;width:22px;height:2px;}
  .qa summary .plus::after{left:10px;top:0;width:2px;height:22px;transition:opacity .24s var(--ease);}
  .qa details[open] summary .plus{transform:rotate(45deg);}
  .qa details[open] summary{color:var(--ink);}
  .qa .answer{padding:0 0 18px;font-size:14px;line-height:1.8;color:var(--ink-2);max-width:52em;}

  /* ---------- 提示条 ---------- */
  .notice-bar{
    margin:8px 0 72px;padding:22px 24px;border-radius:var(--r-card);
    background:rgba(255,90,40,.07);border:1px solid rgba(255,90,40,.28);
    display:flex;flex-wrap:wrap;align-items:center;gap:16px;justify-content:space-between;
  }
  .notice-bar .notice-txt{font-size:14px;line-height:1.7;color:var(--ink);max-width:48em;}
  .notice-bar .notice-txt b{font-weight:700;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--dark);color:var(--dark-ink);padding:72px 0 24px;margin-top:24px;}
  .site-footer .logo-text{color:var(--dark-ink);}
  .foot-title{font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--dark-ink-2);margin-bottom:12px;}
  .foot-link{
    font-size:14px;line-height:1.6;color:var(--dark-ink);opacity:.86;
    position:relative;display:inline-block;transition:color .2s var(--ease),opacity .2s var(--ease);
  }
  .foot-link:hover{color:var(--brand);opacity:1;}
  .site-footer .grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
  .site-footer .col-4{grid-column:span 4;}
  .site-footer .col-3{grid-column:span 3;}
  .site-footer .col-2{grid-column:span 2;}
  .foot-bottom{
    margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:var(--dark-ink-2);
  }

  /* ---------- 底部固定转化条 ---------- */
  .sticky-cta{display:none;}
  @media (max-width:860px){
    body{padding-bottom:72px;}
    .sticky-cta{
      display:flex;align-items:center;justify-content:space-between;gap:12px;
      position:fixed;left:0;right:0;bottom:0;z-index:45;
      height:auto;padding:10px 20px calc(10px + env(safe-area-inset-bottom));
      background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
      border-top:1px solid var(--line);
    }
    .sticky-cta .sticky-txt{font-size:13px;line-height:1.5;color:var(--ink-2);}
  }

  /* ---------- 移动端抽屉 / 搜索层 ---------- */
  .search-layer,.drawer{
    position:fixed;inset:0;z-index:70;background:#fff;display:none;
  }
  .search-layer.is-open{display:block;}
  .search-layer .inner,.drawer .inner{padding:20px;max-width:640px;margin:0 auto;}
  .drawer{transform:translateY(100%);transition:transform .24s var(--ease);}
  .drawer.is-open{display:block;transform:translateY(0);}
  .layer-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;}
  .layer-bar .close{
    width:44px;height:44px;border-radius:var(--r-btn);display:inline-flex;
    align-items:center;justify-content:center;font-size:20px;color:var(--ink);
    transition:background .2s var(--ease);
  }
  .layer-bar .close:hover{background:var(--surface-2);}
  .layer-input{
    display:flex;align-items:center;gap:10px;height:48px;padding:0 16px;
    background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-btn);
  }
  .layer-input input{flex:1;border:none;background:transparent;outline:none;font-size:16px;}
  .layer-hint{margin-top:16px;font-size:13px;color:var(--ink-3);}
  .layer-words{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
  .layer-words a{
    font-size:13px;padding:6px 12px;border-radius:var(--r-pill);
    background:var(--surface-2);color:var(--ink-2);
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .layer-words a:hover{background:var(--ink);color:var(--brand);}
  .drawer-nav{display:flex;flex-direction:column;gap:4px;margin:8px 0 24px;}
  .drawer-nav a{
    padding:14px 12px;border-radius:var(--r-btn);font-size:16px;font-weight:600;color:var(--ink);
    transition:background .2s var(--ease);
  }
  .drawer-nav a:hover{background:var(--surface-2);}
  .drawer-nav a.is-active{background:var(--ink);color:var(--brand);}
  .drawer-sub{padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px;}

  /* ---------- 入场动效 ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
  .reveal.is-in{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .search-box{display:none;}
    .search-toggle{display:inline-flex;}
    .split{grid-template-columns:1fr;gap:32px;padding:48px 0 16px;}
    .side-sticky{position:static;top:auto;}
    .hero-inner{grid-template-columns:1fr;gap:24px;align-items:start;}
    .page-hero{padding:20px 0 40px;}
    .site-footer .col-4,.site-footer .col-3,.site-footer .col-2{grid-column:span 6;}
    .notice-bar{margin-bottom:56px;}
  }
  @media (max-width:768px){
    .menu-toggle{display:inline-flex;}
    .header-top-inner{height:56px;gap:12px;}
    .logo-text{font-size:16px;}
    .compare{grid-template-columns:1fr;}
    .note-num{width:38px;font-size:17px;}
    .block{margin-bottom:32px;}
    .site-footer{padding:56px 0 20px;}
    .site-footer .col-4,.site-footer .col-3,.site-footer .col-2{grid-column:span 12;}
  }
  @media (max-width:520px){
    .h1{font-size:clamp(28px,8vw,38px);}
    .hero-lead{font-size:16px;}
    .btn-primary,.btn-outline{width:100%;}
    .notice-bar .btn-primary,.notice-bar .btn-outline{width:auto;}
    .side-card{padding:20px;}
  }