/* roulang page: index */
/* ================= 设计变量 ================= */
:root{
  --ink:#14201E;
  --ink-2:#1E2E2A;
  --ink-3:#101917;
  --lime:#C7EE4F;
  --lime-d:#9FCB1E;
  --clay:#E07A4F;
  --muted:#6F7F7A;
  --line:#E3E4DE;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --on-dark:#F2F3EE;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(20,32,30,.06);
  --sh-md:0 10px 24px -14px rgba(20,32,30,.22);
  --sh-lg:0 24px 48px -24px rgba(20,32,30,.28);
  --ease:cubic-bezier(.22,.8,.2,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"Inter","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --sect-y:clamp(64px,9vw,132px);
  --nav-h:68px;
}

/* ================= reset / base ================= */
*,*::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:17px;
  line-height:1.9;
  text-align:left;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
table{border-collapse:collapse;width:100%;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
::selection{background:var(--lime);color:var(--ink);}

/* ================= 容器 ================= */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1024px){
  .container{padding-left:40px;padding-right:40px;}
}
@media (min-width:1440px){
  .container{max-width:1240px;}
}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1;
  padding:15px 28px;
  border-radius:999px;
  border:1px solid transparent;
  transition:transform .22s var(--ease),background-color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--sh-md);}
.btn-primary:hover{background:var(--lime-d);transform:translateY(-2px);box-shadow:var(--sh-lg);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(20,32,30,.2);border-radius:10px;}
.btn-ghost:hover{border-color:var(--lime);color:var(--ink);transform:translateY(-2px);}
.btn-on-dark{background:transparent;color:var(--on-dark);border-color:rgba(242,243,238,.28);border-radius:10px;}
.btn-on-dark:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}

.link-underline{
  position:relative;
  display:inline-block;
  font-weight:600;
  font-size:15px;
  color:var(--ink);
  padding-bottom:3px;
}
.link-underline::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:1px;width:0;
  background:var(--lime);
  transition:width .24s var(--ease);
}
.link-underline:hover::after{width:100%;}
.link-underline.on-dark{color:var(--on-dark);}

/* ================= 徽章 / 标签 ================= */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  letter-spacing:.06em;
  line-height:1;
  padding:7px 11px;
  border-radius:var(--r-badge);
  border:1px solid rgba(224,122,79,.55);
  color:var(--clay);
  background:rgba(224,122,79,.06);
}
.tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.06em;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--muted);
  background:var(--card);
  transition:all .22s var(--ease);
}
.tag:hover{border-color:var(--ink);color:var(--ink);}
.tag.is-active{background:var(--ink);border-color:var(--ink);color:var(--on-dark);}
.meta-mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--muted);
}

/* ================= 导航 ================= */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:900;
  height:var(--nav-h);
  background:rgba(246,245,241,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),background-color .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(20,32,30,.9);
  border-bottom-color:rgba(242,243,238,.12);
  box-shadow:0 10px 30px -22px rgba(16,25,23,.85);
}
.nav-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:8px;height:8px;
  background:var(--lime);
  border-radius:2px;
  flex-shrink:0;
}
.brand-text{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:17px;
  letter-spacing:.02em;
  color:var(--ink);
  white-space:nowrap;
  transition:color .28s var(--ease);
}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;
  font-size:14.5px;
  font-weight:500;
  color:var(--ink);
  padding:6px 0;
  white-space:nowrap;
  transition:color .28s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:0;
  background:var(--lime);
  transition:width .24s var(--ease);
}
.nav-links a:hover::after,.nav-links a.is-active::after{width:100%;}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.nav-search{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--ink);
  padding:9px 16px;
  border-radius:999px;
  border:1px solid rgba(20,32,30,.16);
  transition:all .22s var(--ease);
}
.nav-search:hover{border-color:var(--lime);background:rgba(199,238,79,.14);}
.nav-toggle{
  display:none;
  font-size:14px;
  font-weight:600;
  padding:9px 16px;
  border-radius:999px;
  border:1px solid rgba(20,32,30,.18);
  color:var(--ink);
}
.site-header.is-scrolled .brand-text,
.site-header.is-scrolled .nav-links a,
.site-header.is-scrolled .nav-search,
.site-header.is-scrolled .nav-toggle{color:var(--on-dark);}
.site-header.is-scrolled .nav-search,
.site-header.is-scrolled .nav-toggle{border-color:rgba(242,243,238,.26);}

/* 移动端抽屉 */
.site-drawer{
  position:fixed;
  top:0;right:0;
  width:min(86vw,360px);
  height:100%;
  background:var(--ink);
  color:var(--on-dark);
  z-index:1100;
  padding:76px 24px 32px;
  transform:translateX(105%);
  transition:transform .36s var(--ease);
  overflow-y:auto;
}
.site-drawer.is-open{transform:translateX(0);}
.site-drawer a{
  display:block;
  padding:15px 14px;
  font-size:16px;
  border-left:3px solid transparent;
  border-bottom:1px solid rgba(242,243,238,.1);
  color:var(--on-dark);
}
.site-drawer a:hover,.site-drawer a.is-active{
  border-left-color:var(--lime);
  background:rgba(199,238,79,.08);
  color:var(--lime);
}
.site-drawer .drawer-close{
  position:absolute;top:18px;right:20px;
  font-size:14px;color:var(--on-dark);
  padding:8px 12px;border:1px solid rgba(242,243,238,.3);border-radius:999px;
}
.site-drawer .btn{margin-top:22px;}
.drawer-overlay{
  position:fixed;inset:0;
  background:rgba(16,25,23,.5);
  opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
  z-index:1050;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}

@media (max-width:1023px){
  .nav-links,.nav-search,.nav-right .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-left{gap:16px;}
}

/* ================= Hero ================= */
.hero{
  padding-top:calc(var(--nav-h) + clamp(48px,7vw,86px));
  padding-bottom:clamp(56px,7vw,96px);
  position:relative;
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
  align-items:center;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:5fr 7fr;gap:56px;}
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
  margin-bottom:22px;
}
.hero-eyebrow::before{
  content:"";
  width:26px;height:1px;background:var(--lime);
}
.hero h1{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(30px,5vw,62px);
  line-height:1.14;
  letter-spacing:.015em;
  color:var(--ink);
}
.hero-sub{
  margin-top:22px;
  font-size:clamp(17px,1.6vw,20px);
  line-height:1.85;
  color:var(--muted);
  max-width:30em;
}
.hero-actions{
  margin-top:34px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:22px;
}
.hero-metrics{
  margin-top:40px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0 22px;
  font-size:14px;
  color:var(--muted);
}
.hero-metrics span{
  position:relative;
  padding-right:22px;
  line-height:1.7;
}
.hero-metrics span:last-child{padding-right:0;}
.hero-metrics span:not(:last-child)::after{
  content:"";
  position:absolute;
  right:0;top:50%;
  transform:translateY(-50%);
  width:1px;height:14px;
  background:var(--line);
}
.hero-visual{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
}
.hero-visual img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-img);
  transition:transform .6s var(--ease);
}
.hero-visual:hover img{transform:scale(1.03);}
.hero-visual::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:88px;height:4px;
  background:var(--lime);
}
.hero-visual-fallback{
  background:linear-gradient(140deg,var(--ink) 0%,var(--ink-2) 100%);
  min-height:280px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:rgba(242,243,238,.28);
  font-family:var(--font-serif);
  font-size:26px;
  letter-spacing:.08em;
}
.hero-badge{
  position:absolute;
  top:16px;right:16px;
  background:var(--lime);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  padding:8px 12px;
  border-radius:var(--r-badge);
}

/* ================= 板块通用 ================= */
.section{padding:var(--sect-y) 0;}
.section-head{max-width:720px;margin-bottom:clamp(36px,4.6vw,64px);}
.section-head h2{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(24px,3.2vw,38px);
  line-height:1.28;
  letter-spacing:.015em;
  color:var(--ink);
}
.section-head p{
  margin-top:16px;
  color:var(--muted);
  font-size:17px;
  line-height:1.9;
  max-width:44em;
}
.section-label{
  display:block;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
  margin-bottom:14px;
}
.section-dark{background:var(--ink-3);color:var(--on-dark);}
.section-dark .section-head h2{color:var(--on-dark);}
.section-dark .section-head p{color:rgba(242,243,238,.7);}
.section-dark .section-label{color:rgba(242,243,238,.5);}

/* ================= 痛点区 ================= */
.pain-list{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
  border-top:1px solid var(--line);
}
@media (min-width:1024px){
  .pain-list{grid-template-columns:repeat(4,1fr);}
}
.pain-item{
  padding:30px 24px 30px 0;
  border-bottom:1px solid var(--line);
  position:relative;
}
@media (min-width:1024px){
  .pain-item{
    padding:34px 28px;
    border-bottom:1px solid var(--line);
    border-right:1px solid var(--line);
  }
  .pain-item:last-child{border-right:0;}
}
@media (min-width:1024px){
  .pain-item:first-child{padding-left:0;}
}
.pain-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  letter-spacing:.1em;
  color:var(--clay);
  display:block;
  margin-bottom:16px;
}
.pain-item h3{
  font-size:19px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink);
  margin-bottom:12px;
}
.pain-item p{font-size:15px;line-height:1.85;color:var(--muted);}

/* ================= 交错图文 ================= */
.swap-row{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:center;
  padding:clamp(34px,4vw,56px) 0;
  border-top:1px solid var(--line);
}
@media (min-width:900px){
  .swap-row{grid-template-columns:6fr 6fr;gap:56px;}
  .swap-row.is-reverse .swap-media{order:2;}
}
.swap-row h3{
  font-family:var(--font-serif);
  font-size:clamp(20px,2.2vw,26px);
  font-weight:700;
  line-height:1.5;
  letter-spacing:.01em;
  color:var(--ink);
  margin-bottom:14px;
}
.swap-row p{font-size:16.5px;line-height:1.9;color:var(--muted);}
.swap-media{position:relative;border-radius:var(--r-img);overflow:hidden;}
.swap-media img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .6s var(--ease);}
.swap-media:hover img{transform:scale(1.03);}
.point-list{margin-top:22px;display:grid;gap:12px;}
.point-list li{
  position:relative;
  padding-left:22px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--ink);
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:8px;
  background:var(--lime);
  border-radius:2px;
}

/* ================= 成果区 ================= */
.result-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:1px;
  background:rgba(242,243,238,.14);
  border-radius:var(--r-card);
  overflow:hidden;
}
@media (min-width:640px){.result-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.result-grid{grid-template-columns:repeat(4,1fr);}}
.result-item{
  background:var(--ink-3);
  padding:38px 28px;
}
.result-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(38px,4.6vw,54px);
  line-height:1;
  font-weight:700;
  color:var(--lime);
  letter-spacing:-.01em;
}
.result-num sup{font-size:.45em;top:-.9em;position:relative;margin-left:2px;}
.result-item h3{
  margin-top:16px;
  font-size:16px;
  font-weight:600;
  color:var(--on-dark);
  line-height:1.6;
}
.result-item p{
  margin-top:8px;
  font-size:14px;
  line-height:1.8;
  color:rgba(242,243,238,.62);
}

/* ================= 证言 ================= */
.quote-row{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
@media (min-width:900px){.quote-row{grid-template-columns:repeat(3,1fr);gap:32px;}}
.quote{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:32px 28px;
  border-left:3px solid var(--lime);
  box-shadow:var(--sh-sm);
  transition:box-shadow .28s var(--ease),transform .28s var(--ease);
}
.quote:hover{box-shadow:var(--sh-md);transform:translateY(-4px);}
.quote p{
  font-family:var(--font-serif);
  font-size:17.5px;
  line-height:1.85;
  color:var(--ink);
}
.quote footer{
  margin-top:22px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
}
.quote footer strong{display:block;color:var(--ink);font-weight:600;font-size:14.5px;margin-bottom:4px;}

/* ================= 内容卡片 / 资讯 ================= */
.filter-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:34px;
}
.card-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-sm);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.news-card:hover{
  transform:translateY(-4px);
  border-color:rgba(20,32,30,.22);
  box-shadow:var(--sh-lg);
}
.news-media{display:block;overflow:hidden;background:var(--ink-2);}
.news-media img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .5s var(--ease);}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:24px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  margin-top:14px;
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:700;
  line-height:1.5;
  color:var(--ink);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card:hover .news-body h3{color:var(--ink-2);}
.news-excerpt{
  margin-top:12px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-foot{
  margin-top:auto;
  padding-top:20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  border-top:1px solid var(--line);
}
.news-foot .more{font-size:13.5px;font-weight:600;color:var(--ink);}
.news-foot .more::after{content:" →";color:var(--lime-d);}
.empty-state{
  text-align:center;
  padding:64px 24px;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  background:var(--card);
}
.empty-state .ring{
  width:52px;height:52px;
  margin:0 auto 20px;
  border:1px solid var(--line);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
}
.empty-state .ring i{
  display:block;width:12px;height:12px;background:var(--lime);border-radius:3px;
}
.empty-state p{color:var(--muted);font-size:15.5px;margin-bottom:22px;}
.list-foot{margin-top:42px;}

/* ================= FAQ ================= */
.faq-wrap{max-width:900px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.faq-item:hover{border-color:rgba(20,32,30,.18);}
.faq-item.is-open{box-shadow:var(--sh-md);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  padding:22px 24px;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--ink);
  position:relative;
  transition:padding .26s var(--ease);
}
.faq-item.is-open .faq-q{padding-left:32px;}
.faq-item.is-open .faq-q::before{
  content:"";
  position:absolute;
  left:20px;top:24px;
  bottom:24px;
  width:3px;
  background:var(--lime);
  border-radius:2px;
}
.faq-icon{
  flex-shrink:0;
  width:16px;height:16px;
  position:relative;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.faq-icon::before{left:0;top:7.25px;width:16px;height:1.5px;}
.faq-icon::after{left:7.25px;top:0;width:1.5px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-a-inner{
  padding:0 24px 24px;
  font-size:16px;
  line-height:1.9;
  color:var(--muted);
}
.faq-a-inner ul{margin-top:12px;display:grid;gap:8px;}
.faq-a-inner li{position:relative;padding-left:20px;font-size:15px;}
.faq-a-inner li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;background:var(--lime);border-radius:2px;
}

/* ================= CTA ================= */
.cta-section{background:var(--ink-3);color:var(--on-dark);}
.cta-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:44px;
  align-items:start;
}
@media (min-width:1024px){.cta-grid{grid-template-columns:6fr 5fr;gap:72px;}}
.cta-grid h2{
  font-family:var(--font-serif);
  font-size:clamp(24px,3.2vw,38px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:.015em;
  color:var(--on-dark);
}
.cta-grid > div > p{
  margin-top:18px;
  font-size:17px;
  line-height:1.9;
  color:rgba(242,243,238,.72);
  max-width:34em;
}
.cta-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;}
.form-card{
  background:rgba(242,243,238,.05);
  border:1px solid rgba(242,243,238,.16);
  border-radius:var(--r-card);
  padding:28px 26px 30px;
}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:14px;
  color:rgba(242,243,238,.66);
  margin-bottom:10px;
}
.field input,.field textarea{
  width:100%;
  background:rgba(246,245,241,.96);
  border:1px solid transparent;
  border-radius:var(--r-input);
  padding:13px 15px;
  font-size:15px;
  color:var(--ink);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{resize:vertical;min-height:96px;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#9AA6A1;}
.field input:focus,.field textarea:focus{
  border-color:var(--lime);
  box-shadow:0 0 0 2px rgba(199,238,79,.35);
}
.field.has-error input,.field.has-error textarea{border-color:var(--clay);box-shadow:0 0 0 2px rgba(224,122,79,.25);}
.field-note{font-size:12.5px;color:rgba(242,243,238,.45);margin-top:12px;line-height:1.7;}

/* ================= 页脚 ================= */
.site-footer{background:var(--ink-3);color:var(--on-dark);padding-top:clamp(56px,6vw,88px);}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
  border-top:1px solid rgba(242,243,238,.12);
}
@media (min-width:900px){
  .footer-grid{grid-template-columns:repeat(4,1fr);gap:36px;}
}
.footer-col{padding:24px 0;border-bottom:1px solid rgba(242,243,238,.12);}
@media (min-width:900px){
  .footer-col{border-bottom:0;padding:36px 0 0;}
}
.footer-col__title{
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--on-dark);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.footer-col__title .chev{
  display:none;
  width:12px;height:12px;position:relative;flex-shrink:0;
}
.footer-col__title .chev::before,
.footer-col__title .chev::after{
  content:"";position:absolute;background:var(--lime);
}
.footer-col__title .chev::before{left:0;top:5.25px;width:12px;height:1.5px;}
.footer-col__title .chev::after{left:5.25px;top:0;width:1.5px;height:12px;transition:transform .26s var(--ease);}
.footer-col.is-open .chev::after{transform:scaleY(0);}
.footer-brand .brand-text{color:var(--on-dark);}
.footer-brand-note{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:rgba(242,243,238,.6);
  max-width:22em;
}
.footer-links{
  margin-top:18px;
  display:grid;
  gap:12px;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
@media (max-width:899px){
  .footer-links{max-height:0;}
  .footer-col.is-open .footer-links{max-height:420px;}
  .footer-col__title{cursor:pointer;}
  .footer-col__title .chev{display:block;}
}
@media (min-width:900px){
  .footer-links{max-height:none!important;}
}
.footer-links a,.footer-links span{
  font-size:14.5px;
  color:rgba(242,243,238,.66);
  line-height:1.7;
  transition:color .22s var(--ease);
}
.footer-links a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:34px;
  padding:26px 0 34px;
  border-top:1px solid rgba(242,243,238,.12);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.footer-bottom p{font-size:13.5px;color:rgba(242,243,238,.5);line-height:1.8;}
.to-top{
  width:42px;height:42px;
  border:1px solid rgba(199,238,79,.6);
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--lime);
  font-size:16px;
  transition:all .22s var(--ease);
}
.to-top:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);}

/* ================= 动效 ================= */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink:#14201E;
  --ink-2:#1E2E2A;
  --ink-3:#101917;
  --lime:#C7EE4F;
  --lime-dark:#9FCB1E;
  --clay:#E07A4F;
  --muted:#6F7F7A;
  --line:#E3E4DE;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --on-dark:#F2F3EE;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:6px;
  --shadow-sm:0 1px 2px rgba(20,32,30,.06);
  --shadow-md:0 10px 24px -14px rgba(20,32,30,.22);
  --shadow-lg:0 24px 48px -24px rgba(20,32,30,.28);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:"Inter",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.8,.2,1);
}
*,*::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:var(--sans);
  font-size:17px;
  line-height:1.9;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-md);}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--ink-2);}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--ink);}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:.015em;margin:0;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}
@media (min-width:1440px){.container{max-width:1240px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:900;
  height:68px;
  display:flex;
  align-items:center;
  background:rgba(246,245,241,.88);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(20,32,30,.92);
  border-bottom-color:rgba(242,243,238,.14);
}
.nav-wrap{display:flex;align-items:center;gap:32px;width:100%;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--sans);
  font-weight:700;
  font-size:17px;
  letter-spacing:.02em;
  color:var(--ink);
  white-space:nowrap;
}
.logo-mark{
  width:8px;height:8px;border-radius:2px;background:var(--lime);
  box-shadow:0 0 0 3px rgba(199,238,79,.22);
  flex:none;
}
.site-header.is-scrolled .logo{color:var(--on-dark);}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:#43524E;
  padding:6px 0;
}
.nav-links a::after{
  content:"";
  position:absolute;left:0;bottom:0;
  width:100%;height:1px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.site-header.is-scrolled .nav-links a{color:rgba(242,243,238,.76);}
.site-header.is-scrolled .nav-links a:hover,
.site-header.is-scrolled .nav-links a.is-active{color:var(--on-dark);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  color:var(--ink);
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.icon-btn:hover{border-color:var(--lime);color:var(--ink);}
.site-header.is-scrolled .icon-btn{border-color:rgba(242,243,238,.24);color:var(--on-dark);}
.site-header.is-scrolled .icon-btn:hover{border-color:var(--lime);}
.menu-toggle{display:none;}
@media (max-width:1023px){
  .nav-links{display:none;}
  .menu-toggle{display:inline-flex;}
  .nav-actions .btn{display:none;}
}
@media (max-width:639px){
  .site-header{height:56px;}
  .container{padding:0 20px;}
  .logo{font-size:15px;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;
  padding:13px 26px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--lime-dark);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-ghost{
  border:1px solid rgba(20,32,30,.2);
  color:var(--ink);
  border-radius:10px;
  background:transparent;
}
.btn-ghost:hover{border-color:var(--lime);color:var(--ink);background:rgba(199,238,79,.12);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-on-dark{
  border:1px solid rgba(242,243,238,.28);
  color:var(--on-dark);
  border-radius:10px;
  background:transparent;
}
.btn-on-dark:hover{border-color:var(--lime);color:var(--on-dark);}
.text-link{
  position:relative;
  display:inline-block;
  font-weight:600;
  font-size:15px;
  padding-bottom:3px;
  color:var(--ink);
}
.text-link::after{
  content:"";
  position:absolute;left:0;bottom:0;
  height:1px;width:100%;
  background:var(--lime);
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.text-link:hover::after{transform:scaleX(1);}
.text-link.on-dark{color:var(--on-dark);}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:min(84vw,340px);
  background:var(--ink);
  color:var(--on-dark);
  padding:28px 24px 36px;
  transform:translateX(105%);
  transition:transform .34s var(--ease);
  z-index:1300;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-head .logo{color:var(--on-dark);font-size:16px;}
.drawer-close{color:var(--on-dark);font-size:22px;line-height:1;padding:6px;}
.drawer nav{display:flex;flex-direction:column;gap:4px;margin-bottom:26px;}
.drawer nav a{
  display:block;
  padding:14px 14px 14px 16px;
  color:rgba(242,243,238,.82);
  font-size:16px;
  border-left:3px solid transparent;
  border-radius:0 10px 10px 0;
  transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.drawer nav a:hover,.drawer nav a.is-active{
  background:rgba(242,243,238,.06);
  border-left-color:var(--lime);
  color:var(--on-dark);
}
.drawer-foot{border-top:1px solid rgba(242,243,238,.14);padding-top:20px;font-size:14px;color:rgba(242,243,238,.6);}
.drawer-backdrop{
  position:fixed;inset:0;
  background:rgba(16,25,23,.55);
  opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);
  z-index:1200;
}
.drawer-backdrop.is-open{opacity:1;pointer-events:auto;}

/* ---------- page head ---------- */
.page-head{
  padding:38px 0 0;
  background:linear-gradient(180deg,rgba(227,228,222,.42) 0%,rgba(246,245,241,0) 100%);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--ink);}
.crumbs span.sep{opacity:.6;}
.crumbs .current{color:var(--ink);}

/* ---------- article ---------- */
.article-shell{padding:34px 0 0;}
.article-inner{max-width:760px;margin:0 auto;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border:1px solid var(--clay);
  color:var(--clay);
  border-radius:var(--radius-sm);
  font-size:12px;
  letter-spacing:.06em;
  background:rgba(224,122,79,.06);
}
.article-title{
  font-size:clamp(30px,4.2vw,44px);
  line-height:1.24;
  margin:18px 0 18px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:14px;
  color:var(--muted);
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
}
.meta-row .num{color:#4C5B56;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--line);display:inline-block;}
.lede{
  margin:28px 0 8px;
  padding-left:18px;
  border-left:3px solid var(--lime);
  font-family:var(--serif);
  font-size:19px;
  line-height:1.85;
  color:#31403C;
}
.article-content{
  font-size:18px;
  line-height:1.95;
  color:#25322F;
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-content > * + *{margin-top:26px;}
.article-content p{margin:0 0 1.6em;}
.article-content h2{
  position:relative;
  font-size:clamp(23px,2.6vw,28px);
  line-height:1.4;
  margin:52px 0 18px;
  padding-left:18px;
}
.article-content h2::before{
  content:"";
  position:absolute;left:0;top:.36em;
  width:4px;height:1em;
  background:var(--lime);
  border-radius:2px;
}
.article-content h3{
  font-size:20px;
  line-height:1.5;
  margin:34px 0 14px;
}
.article-content h4{font-size:18px;margin:28px 0 12px;font-weight:600;font-family:var(--sans);}
.article-content ul,.article-content ol{margin:0 0 1.6em;padding-left:0;}
.article-content ul{list-style:none;}
.article-content ul li{
  position:relative;
  padding-left:24px;
  margin-bottom:10px;
}
.article-content ul li::before{
  content:"";
  position:absolute;left:2px;top:.72em;
  width:8px;height:8px;
  background:var(--lime);
  border-radius:2px;
}
.article-content ol{list-style:decimal;padding-left:24px;}
.article-content ol li{margin-bottom:10px;padding-left:4px;}
.article-content ol li::marker{color:var(--muted);font-family:var(--mono);}
.article-content blockquote{
  margin:32px 0;
  padding:20px 24px;
  background:#EFEEE8;
  border-left:3px solid var(--lime);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:#3A4844;
  font-family:var(--serif);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{margin:30px auto;border-radius:var(--radius-md);}
.article-content figure{margin:30px 0;}
.article-content figcaption{
  margin-top:10px;
  font-size:14px;
  color:var(--muted);
  text-align:center;
  line-height:1.7;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  font-size:16px;
  margin:28px 0;
}
.article-content th{
  background:var(--ink);
  color:var(--on-dark);
  text-align:left;
  padding:12px 16px;
  font-weight:600;
}
.article-content td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  color:#2E3B38;
}
.article-content a{
  color:var(--ink);
  border-bottom:1px solid var(--lime);
}
.article-content a:hover{color:var(--ink-2);}
.article-content code{
  font-family:var(--mono);
  font-size:15px;
  background:#EFEEE8;
  padding:2px 6px;
  border-radius:4px;
}
.article-content hr{border:0;border-top:1px solid var(--line);margin:38px 0;}
@media (max-width:760px){
  .article-content{font-size:17px;}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap;}
}

/* ---------- footer of article ---------- */
.article-foot{
  max-width:760px;
  margin:44px auto 0;
  padding-top:28px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px 20px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:13px;
  color:#4C5B56;
  background:var(--card);
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.tag:hover{border-color:var(--lime);color:var(--ink);}
.share-row{margin-left:auto;display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);}
.share-row button{
  padding:7px 14px;
  border:1px solid var(--line);
  border-radius:10px;
  font-size:13px;
  color:#4C5B56;
  background:var(--card);
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.share-row button:hover{border-color:var(--lime);color:var(--ink);}

/* ---------- prev next ---------- */
.prevnext{
  max-width:760px;
  margin:36px auto 0;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
.prevnext a{
  display:block;
  padding:20px 22px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.prevnext a:hover{transform:translateY(-4px);border-color:rgba(20,32,30,.2);box-shadow:var(--shadow-md);}
.prevnext .k{display:block;font-size:12px;letter-spacing:.06em;color:var(--muted);margin-bottom:8px;}
.prevnext .t{display:block;font-family:var(--serif);font-size:17px;line-height:1.5;}
.prevnext .next{text-align:right;}

/* ---------- sections ---------- */
.section{padding:clamp(64px,9vw,110px) 0;}
.section-tight{padding:clamp(56px,7vw,88px) 0;}
.section-head{margin-bottom:38px;max-width:720px;}
.section-head h2{font-size:clamp(26px,3.2vw,34px);line-height:1.28;}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
  margin-bottom:12px;
  text-transform:uppercase;
}

/* ---------- cards ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(20,32,30,.2);box-shadow:var(--shadow-lg);}
.card-media{overflow:hidden;aspect-ratio:3/2;background:var(--ink-2);}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:19px;line-height:1.5;}
.card-body .excerpt{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.card-foot .num{font-size:13px;color:var(--clay);}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:639px){.card-grid{grid-template-columns:1fr;}}

/* ---------- empty state ---------- */
.empty{
  text-align:center;
  padding:56px 24px;
  border:1px dashed var(--line);
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,.7);
}
.empty .ring{
  width:56px;height:56px;border-radius:50%;
  border:1px solid var(--line);
  margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
  color:var(--muted);
}
.empty p{color:var(--muted);margin-bottom:18px;}

/* ---------- cta ---------- */
.cta-band{
  background:var(--ink-3);
  color:var(--on-dark);
  border-radius:24px;
  padding:clamp(36px,5vw,58px);
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:36px;
  align-items:center;
}
.cta-band h2{color:var(--on-dark);font-size:clamp(24px,3vw,32px);line-height:1.3;}
.cta-band p{color:rgba(242,243,238,.72);margin-top:14px;font-size:16px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
@media (max-width:1023px){.cta-band{grid-template-columns:1fr;gap:26px;}}

/* ---------- form ---------- */
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:14px;color:var(--muted);}
.field input{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:10px;
  padding:12px 14px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field input:focus{
  outline:none;
  border-color:var(--lime);
  box-shadow:0 0 0 2px rgba(199,238,79,.35);
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-3);color:rgba(242,243,238,.76);margin-top:clamp(64px,8vw,110px);}
.footer-top{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:32px;
  padding:64px 0 44px;
}
.footer-brand .logo{color:var(--on-dark);font-size:16px;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(242,243,238,.62);}
.footer-col h4{
  color:var(--on-dark);
  font-family:var(--sans);
  font-size:14px;
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(242,243,238,.66);}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  border-top:1px solid rgba(242,243,238,.14);
  padding:22px 0 32px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  font-size:13px;
  color:rgba(242,243,238,.55);
}
.to-top{
  margin-left:auto;
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid var(--lime);
  color:var(--lime);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.to-top:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);}
@media (max-width:1023px){
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:639px){
  .footer-top{grid-template-columns:1fr;gap:22px;padding:44px 0 30px;}
  .prevnext{grid-template-columns:1fr;}
  .prevnext .next{text-align:left;}
  .share-row{margin-left:0;}
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  .card:hover,.prevnext a:hover,.btn-primary:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#14201E;
  --ink-2:#1E2E2A;
  --ink-3:#101917;
  --lime:#C7EE4F;
  --lime-deep:#9FCB1E;
  --clay:#E07A4F;
  --muted:#6F7F7A;
  --line:#E3E4DE;
  --page:#F6F5F1;
  --card:#FFFFFF;
  --on-dark:#F2F3EE;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(20,32,30,.06);
  --sh-md:0 10px 24px -14px rgba(20,32,30,.22);
  --sh-lg:0 24px 48px -24px rgba(20,32,30,.28);
  --ease:cubic-bezier(.22,.8,.2,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --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;
  padding:0;
  background:var(--page);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--ink);text-decoration:none;}
p{margin:0 0 1.6em;}
ul,ol{margin:0 0 1.4em;padding-left:1.2em;}
li{margin-bottom:.5em;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:.015em;margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1024px){
  .container{padding-left:40px;padding-right:40px;}
}
@media (min-width:1440px){
  .container{max-width:1240px;}
}

/* ---------- 基础替换 Foundation 默认外观 ---------- */
.button,.button:visited,button{outline:none;}
.accordion,.accordion-item,.accordion-title,.accordion-content{background:transparent;border:none;color:inherit;}
.accordion-title{padding:0;}
.accordion-title::before{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 28px;
  border:none;
  border-radius:999px;
  background:var(--lime);
  color:var(--ink);
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  cursor:pointer;
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
  box-shadow:var(--sh-sm);
}
.btn:hover,.btn:focus-visible{
  background:var(--lime-deep);
  transform:translateY(-2px);
  box-shadow:var(--sh-lg);
  color:var(--ink);
}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 26px;
  border:1px solid rgba(20,32,30,.2);
  border-radius:10px;
  background:transparent;
  color:var(--ink);
  font-size:15px;
  font-weight:500;
  cursor:pointer;
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.btn-ghost:hover,.btn-ghost:focus-visible{
  border-color:var(--lime);
  color:var(--ink);
  background:rgba(199,238,79,.14);
}
.link-arrow{
  position:relative;
  display:inline-block;
  font-size:15px;
  font-weight:500;
  color:var(--ink);
  padding-bottom:2px;
}
.link-arrow::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:1px;
  background:var(--lime);
  transition:width .24s var(--ease);
}
.link-arrow:hover::after{width:100%;}
.link-arrow i{font-size:12px;margin-left:6px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:68px;
  background:rgba(20,32,30,.94);
  backdrop-filter:saturate(150%) blur(10px);
  -webkit-backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid rgba(242,243,238,.08);
  transition:height .28s var(--ease),background .28s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(16,25,23,.88);
  box-shadow:0 10px 30px -20px rgba(0,0,0,.6);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:100%;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--on-dark);
  font-weight:700;
  letter-spacing:.02em;
  font-size:17px;
  white-space:nowrap;
}
.brand-mark{
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--lime);
  display:inline-block;
  flex:none;
}
.brand span.brand-text{display:inline;}
.nav-right{display:flex;align-items:center;gap:18px;}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-links a{
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  color:rgba(242,243,238,.76);
  font-size:15px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:var(--on-dark);background:rgba(242,243,238,.08);}
.nav-links a.is-active{
  color:var(--ink);
  background:var(--lime);
  font-weight:700;
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-search{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid rgba(242,243,238,.18);
  color:var(--on-dark);
  background:transparent;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-search:hover{border-color:var(--lime);color:var(--lime);}
.nav-cta{
  padding:9px 20px;
  border-radius:999px;
  background:var(--lime);
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.nav-cta:hover{background:var(--lime-deep);transform:translateY(-2px);color:var(--ink);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid rgba(242,243,238,.18);
  background:transparent;
  color:var(--on-dark);
  cursor:pointer;
}

/* 移动抽屉 */
.off-canvas{background:var(--ink);}
.mobile-drawer{
  padding:22px 20px 40px;
  color:var(--on-dark);
}
.mobile-drawer .drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:18px;
  border-bottom:1px solid rgba(242,243,238,.12);
  margin-bottom:18px;
}
.mobile-drawer .brand{font-size:16px;}
.drawer-close{
  background:transparent;border:none;color:var(--on-dark);
  font-size:20px;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{
  display:block;
  padding:13px 14px;
  border-left:3px solid transparent;
  border-radius:8px;
  color:rgba(242,243,238,.82);
  font-size:16px;
}
.drawer-nav a:hover{background:rgba(242,243,238,.06);}
.drawer-nav a.is-active{
  border-left-color:var(--lime);
  background:rgba(199,238,79,.1);
  color:var(--on-dark);
  font-weight:700;
}
.drawer-search{
  display:flex;align-items:center;gap:10px;
  border:1px solid rgba(242,243,238,.2);
  border-radius:var(--r-input);
  padding:10px 14px;
  margin-bottom:18px;
  color:rgba(242,243,238,.6);
}
.drawer-search input{
  flex:1;border:none;background:transparent;color:var(--on-dark);outline:none;font-size:15px;
}
.drawer-search input::placeholder{color:rgba(242,243,238,.45);}
.drawer-cta{display:block;text-align:center;width:100%;}

@media (max-width:1023px){
  .nav-links,.nav-search,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
}

/* ---------- 面包屑 ---------- */
.crumbs{
  padding:104px 0 0;
  font-size:14px;
  color:var(--muted);
}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;}
.crumbs li{margin:0;display:flex;align-items:center;gap:8px;}
.crumbs li::after{content:"/";color:var(--line);}
.crumbs li:last-child::after{display:none;}
.crumbs a{color:var(--muted);transition:color .2s var(--ease);}
.crumbs a:hover{color:var(--ink);}
.crumbs .current{color:var(--ink);font-weight:500;}

/* ---------- 窄幅横幅 ---------- */
.page-banner{
  position:relative;
  margin-top:22px;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--ink-3);
  min-height:280px;
  display:flex;
  align-items:flex-end;
}
.page-banner .banner-media{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  opacity:.42;
}
.page-banner .banner-veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,25,23,.94) 0%,rgba(16,25,23,.78) 46%,rgba(16,25,23,.3) 100%);
}
.banner-body{
  position:relative;
  padding:52px 34px 46px;
  max-width:760px;
}
.banner-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  border-radius:var(--r-badge);
  border:1px solid rgba(224,122,79,.6);
  color:#F0A47D;
  font-size:12px;
  letter-spacing:.06em;
  margin-bottom:18px;
}
.page-banner h1{
  color:var(--on-dark);
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.18;
  margin-bottom:16px;
}
.page-banner .banner-lede{
  color:rgba(242,243,238,.82);
  font-size:19px;
  line-height:1.8;
  margin:0;
}

/* ---------- 主体两栏 ---------- */
.main-wrap{padding:64px 0 0;}
.split{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:24px;
  align-items:start;
}
@media (max-width:1023px){
  .split{grid-template-columns:minmax(0,1fr);gap:32px;}
}

.step-nav{
  position:sticky;
  top:92px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 22px;
  box-shadow:var(--sh-sm);
}
.step-nav h2{
  font-size:15px;
  font-family:var(--sans);
  font-weight:700;
  letter-spacing:.06em;
  color:var(--muted);
  margin-bottom:16px;
}
.step-nav ol{list-style:none;margin:0;padding:0;counter-reset:step;}
.step-nav li{margin-bottom:2px;}
.step-nav a{
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 12px;
  border-radius:10px;
  font-size:15px;
  color:var(--muted);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.step-nav a .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--line);
  flex:none;
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.step-nav a:hover{background:rgba(199,238,79,.16);color:var(--ink);}
.step-nav a.is-active{
  background:rgba(199,238,79,.2);
  color:var(--ink);
  font-weight:700;
}
.step-nav a.is-active .dot{background:var(--lime-deep);box-shadow:0 0 0 4px rgba(199,238,79,.25);}
.step-nav .nav-note{
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
}
@media (max-width:1023px){
  .step-nav{
    position:static;
    padding:18px 16px;
  }
  .step-nav ol{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;}
  .step-nav li{margin:0;flex:none;}
  .step-nav a{white-space:nowrap;background:var(--page);}
}

.step-stack{display:flex;flex-direction:column;gap:24px;}
.step-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:34px 32px 30px;
  box-shadow:var(--sh-sm);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
  scroll-margin-top:100px;
}
.step-card:hover{
  border-color:rgba(20,32,30,.2);
  box-shadow:var(--sh-md);
  transform:translateY(-2px);
}
.step-head{
  display:flex;
  gap:22px;
  align-items:flex-start;
  margin-bottom:16px;
}
.step-num{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(48px,6vw,72px);
  line-height:1;
  font-weight:700;
  color:transparent;
  -webkit-text-stroke:1.5px var(--lime-deep);
  flex:none;
  letter-spacing:0;
}
.step-title h3{
  font-size:21px;
  line-height:1.5;
  margin-bottom:6px;
}
.step-title .step-kicker{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--clay);
}
.step-card p{color:#2C3A37;font-size:17px;line-height:1.9;margin-bottom:1.2em;}
.step-card p:last-child{margin-bottom:0;}
.step-points{
  list-style:none;
  margin:0 0 20px;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px 20px;
}
@media (max-width:639px){
  .step-points{grid-template-columns:minmax(0,1fr);}
}
.step-points li{
  position:relative;
  padding-left:18px;
  margin:0;
  font-size:15.5px;
  color:#2C3A37;
  line-height:1.7;
}
.step-points li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--lime);
}
.step-figure{margin:22px 0 0;}
.step-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-img);
}
.step-figure figcaption{
  margin-top:10px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
}
.step-tip{
  margin-top:20px;
  padding:14px 18px;
  border-left:3px solid var(--clay);
  background:var(--page);
  border-radius:0 10px 10px 0;
  font-size:15px;
  color:#2C3A37;
  line-height:1.8;
}
.step-tip strong{color:var(--ink);}

/* ---------- 侧栏速览 ---------- */
.mini-panel{
  margin-top:24px;
  background:var(--ink-2);
  color:var(--on-dark);
  border-radius:var(--r-card);
  padding:26px 24px;
}
.mini-panel h3{
  font-size:17px;
  color:var(--on-dark);
  margin-bottom:12px;
}
.mini-panel p{
  font-size:14.5px;
  line-height:1.8;
  color:rgba(242,243,238,.72);
  margin-bottom:16px;
}
.mini-panel ul{list-style:none;margin:0 0 18px;padding:0;}
.mini-panel li{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:9px 0;
  border-bottom:1px solid rgba(242,243,238,.1);
  font-size:14.5px;
  color:rgba(242,243,238,.75);
}
.mini-panel li:last-child{border-bottom:none;}
.mini-panel li b{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  color:var(--lime);
  font-weight:600;
}

/* ---------- 底部 CTA ---------- */
.bottom-cta{
  margin:88px 0 0;
  background:var(--ink-3);
  border-radius:var(--r-card);
  padding:56px 40px;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:32px;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.bottom-cta::after{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:220px;height:220px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(199,238,79,.16),transparent 70%);
}
.bottom-cta h2{
  color:var(--on-dark);
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  margin-bottom:14px;
}
.bottom-cta p{
  color:rgba(242,243,238,.74);
  font-size:16px;
  line-height:1.9;
  margin:0;
  max-width:560px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}
@media (max-width:767px){
  .bottom-cta{grid-template-columns:minmax(0,1fr);padding:40px 24px;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--ink-3);
  color:rgba(242,243,238,.7);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
  padding-bottom:44px;
}
.footer-col-brand{grid-column:span 4;}
.footer-col{grid-column:span 3;}
@media (max-width:1023px){
  .footer-col-brand{grid-column:span 12;}
  .footer-col{grid-column:span 6;}
}
@media (max-width:639px){
  .footer-col{grid-column:span 12;}
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--on-dark);
  font-weight:700;
  font-size:17px;
  letter-spacing:.02em;
  margin-bottom:14px;
}
.footer-note{font-size:14.5px;line-height:1.8;color:rgba(242,243,238,.6);margin:0;max-width:320px;}
.footer-title{
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.08em;
  color:rgba(242,243,238,.5);
  margin-bottom:16px;
  font-weight:700;
}
.footer-list{list-style:none;margin:0;padding:0;}
.footer-list li{margin-bottom:10px;}
.footer-list a{
  color:rgba(242,243,238,.76);
  font-size:15px;
  transition:color .2s var(--ease);
}
.footer-list a:hover{color:var(--lime);}
.footer-contact{font-size:14.5px;line-height:1.9;color:rgba(242,243,238,.62);margin:0 0 10px;}
.footer-bottom{
  border-top:1px solid rgba(242,243,238,.1);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:14px;
  color:rgba(242,243,238,.5);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  border:1px solid var(--lime);
  border-radius:999px;
  color:var(--lime);
  font-size:14px;
  background:transparent;
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.to-top:hover{background:var(--lime);color:var(--ink);}

/* 页脚移动折叠 */
.footer-collapse-btn{display:none;}
@media (max-width:639px){
  .footer-collapse-btn{
    display:flex;
    width:100%;
    align-items:center;
    justify-content:space-between;
    background:transparent;
    border:none;
    border-bottom:1px solid rgba(242,243,238,.12);
    color:rgba(242,243,238,.8);
    padding:14px 0;
    font-size:15px;
    font-weight:700;
    cursor:pointer;
    margin-bottom:12px;
  }
  .footer-list{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
  .footer-list.is-open{max-height:420px;}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  .btn:hover,.btn-ghost:hover,.step-card:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#14201E;
  --ink-2:#1E2E2A;
  --ink-3:#101917;
  --lime:#C7EE4F;
  --lime-d:#9FCB1E;
  --clay:#E07A4F;
  --muted:#6F7F7A;
  --line:#E3E4DE;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --on-dark:#F2F3EE;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(20,32,30,.06);
  --sh-md:0 10px 24px -14px rgba(20,32,30,.22);
  --sh-lg:0 24px 48px -24px rgba(20,32,30,.28);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:"Inter","SFMono-Regular","Roboto Mono",Consolas,monospace;
  --ease:cubic-bezier(.22,.8,.2,1);
  --sec:clamp(56px,7vw,104px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  text-align:left;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}
@media (min-width:1440px){.wrap{max-width:1240px}}
:where(.serif){font-family:var(--serif)}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:60;
  background:rgba(246,245,241,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(20,32,30,.92);
  border-bottom-color:rgba(199,238,79,.22);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:60px}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:18px;
  letter-spacing:.02em;
  color:var(--ink);
  white-space:nowrap;
}
.brand-mark{
  width:8px;height:8px;
  background:var(--lime);
  border-radius:2px;
  box-shadow:0 0 0 4px rgba(199,238,79,.22);
  flex:none;
}
.site-header.is-scrolled .brand,
.site-header.is-scrolled .nav-links a,
.site-header.is-scrolled .icon-btn{color:var(--on-dark)}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:12px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15.5px;
  color:var(--ink);
  border-radius:8px;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{font-weight:700}
.nav-links a:hover{color:var(--ink-2)}
.site-header.is-scrolled .nav-links a:hover{color:var(--lime)}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.icon-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 14px;
  font-size:14.5px;
  color:var(--ink);
  border:1px solid rgba(20,32,30,.2);
  border-radius:999px;
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.icon-btn:hover{border-color:var(--lime-d);background:rgba(199,238,79,.16)}
.site-header.is-scrolled .icon-btn{border-color:rgba(242,243,238,.3)}
.site-header.is-scrolled .icon-btn:hover{border-color:var(--lime);background:rgba(199,238,79,.14);color:var(--ink)}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  font-size:16px;
  font-weight:600;
  letter-spacing:.01em;
  border-radius:999px;
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-sm{padding:9px 18px;font-size:14.5px}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--lime-d);box-shadow:var(--sh-md);transform:translateY(-2px)}
.btn-ghost{
  border:1px solid rgba(20,32,30,.2);
  border-radius:10px;
  color:var(--ink);
  background:transparent;
}
.btn-ghost:hover{border-color:var(--lime-d);color:var(--ink-2);transform:translateY(-2px)}
.btn-on-dark{
  background:var(--lime);
  color:var(--ink);
}
.btn-on-dark:hover{background:var(--lime-d);transform:translateY(-2px);box-shadow:var(--sh-lg)}
.burger{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid rgba(20,32,30,.2);
  padding:11px 10px;
  flex-direction:column;
  justify-content:space-between;
}
.burger span{display:block;height:2px;background:var(--ink);border-radius:2px}
.site-header.is-scrolled .burger{border-color:rgba(242,243,238,.3)}
.site-header.is-scrolled .burger span{background:var(--on-dark)}

/* 抽屉 */
.drawer{
  display:none;
  background:var(--ink-3);
  border-top:1px solid rgba(199,238,79,.18);
  padding:18px 20px 26px;
}
.drawer.is-open{display:block}
.drawer a{
  display:block;
  color:var(--on-dark);
  font-size:16px;
  padding:12px 14px;
  border-radius:10px;
  border-left:3px solid transparent;
}
.drawer a.is-active{border-left-color:var(--lime);background:rgba(199,238,79,.08);color:var(--lime)}
.drawer .drawer-cta{margin-top:14px;display:inline-flex}

/* 搜索条 */
.search-panel{
  display:none;
  border-top:1px solid var(--line);
  background:var(--card);
}
.search-panel.is-open{display:block}
.search-panel .wrap{padding-top:16px;padding-bottom:18px}
.search-row{display:flex;gap:10px}
.search-row input{
  flex:1;
  padding:12px 16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-input);
}
.search-row input:focus{
  border-color:var(--lime-d);
  box-shadow:0 0 0 3px rgba(199,238,79,.28);
  outline:none;
}
.search-tip{font-size:14px;color:var(--muted);margin-top:10px}

/* ============ 页头 ============ */
.page-head{
  position:relative;
  margin-top:68px;
  padding:64px 0 56px;
  background:
    linear-gradient(100deg,rgba(16,25,23,.94) 0%,rgba(16,25,23,.82) 46%,rgba(16,25,23,.56) 100%),
    url(/assets/images/backpic/back-2.png) center/cover no-repeat,
    var(--ink-3);
  color:var(--on-dark);
  overflow:hidden;
}
.page-head::after{
  content:"";
  position:absolute;
  right:-40px;bottom:-60px;
  width:230px;height:230px;
  border:1px solid rgba(199,238,79,.4);
  border-radius:50%;
  pointer-events:none;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(242,243,238,.66);
  margin-bottom:22px;
}
.crumbs a{color:rgba(242,243,238,.8);border-bottom:1px solid transparent}
.crumbs a:hover{color:var(--lime);border-bottom-color:var(--lime)}
.crumbs .sep{opacity:.5}
.head-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  font-size:12px;
  letter-spacing:.06em;
  border:1px solid var(--clay);
  color:#F6C7AF;
  border-radius:var(--r-badge);
  margin-bottom:20px;
}
.page-head h1{
  font-family:var(--serif);
  font-size:clamp(30px,4.4vw,54px);
  line-height:1.18;
  letter-spacing:.015em;
  font-weight:700;
  max-width:18em;
}
.page-head .lead{
  margin-top:20px;
  max-width:44em;
  font-size:clamp(17px,1.6vw,20px);
  line-height:1.85;
  color:rgba(242,243,238,.84);
}
.head-stats{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
  margin-top:34px;
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
}
.head-stats .item{
  padding:0 22px;
  border-left:1px solid rgba(242,243,238,.22);
}
.head-stats .item:first-child{padding-left:0;border-left:0}
.head-stats b{
  display:block;
  font-size:24px;
  color:var(--lime);
  font-weight:700;
}
.head-stats span{font-size:13.5px;color:rgba(242,243,238,.7);letter-spacing:.04em}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0}
.section-tight{padding:clamp(40px,5vw,72px) 0}
.sec-head{max-width:62em;margin-bottom:clamp(28px,3.4vw,52px)}
.sec-head h2{
  font-family:var(--serif);
  font-size:clamp(26px,3vw,38px);
  line-height:1.3;
  letter-spacing:.015em;
  font-weight:700;
}
.sec-head p{
  margin-top:16px;
  color:var(--muted);
  font-size:17px;
  max-width:56em;
}
.badge{
  display:inline-block;
  padding:4px 11px;
  font-size:12px;
  letter-spacing:.06em;
  border:1px solid var(--clay);
  color:#B4562C;
  border-radius:var(--r-badge);
  background:rgba(224,122,79,.07);
}
.stamp{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:13.5px;
  color:var(--muted);
  letter-spacing:.02em;
}
.text-link{
  position:relative;
  display:inline-block;
  font-weight:600;
  color:var(--ink);
  padding-bottom:2px;
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;height:1px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.text-link:hover::after{transform:scaleX(1)}
.text-link:hover{color:var(--ink-2)}
.text-link .arrow{color:var(--lime-d);margin-left:4px}

/* ============ Feature 大卡 ============ */
.feature{
  display:grid;
  grid-template-columns:7fr 5fr;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-sm);
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.feature:hover{box-shadow:var(--sh-lg);border-color:rgba(20,32,30,.2);transform:translateY(-4px)}
.feature-media{
  position:relative;
  display:block;
  overflow:hidden;
  min-height:300px;
}
.feature-media img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
  transition:transform .5s var(--ease);
}
.feature:hover .feature-media img{transform:scale(1.03)}
.feature-media::after{
  content:"";
  position:absolute;
  left:22px;top:22px;
  width:64px;height:64px;
  border-top:2px solid var(--lime);
  border-left:2px solid var(--lime);
}
.feature-body{
  padding:clamp(24px,3vw,44px);
  display:flex;
  flex-direction:column;
  gap:16px;
}
.feature-body h3{
  font-family:var(--serif);
  font-size:clamp(21px,2.1vw,27px);
  line-height:1.45;
  font-weight:700;
  letter-spacing:.012em;
}
.feature-body p{color:#41504B;font-size:16.5px;line-height:1.85}
.feature-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.feature-points{
  display:grid;
  gap:8px;
  margin-top:2px;
}
.feature-points li{
  position:relative;
  padding-left:18px;
  font-size:15.5px;
  color:var(--muted);
}
.feature-points li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:7px;height:7px;
  background:var(--lime);
  border-radius:2px;
}

/* ============ 紧凑列表 ============ */
.brief-list{
  margin-top:28px;
  border-top:1px solid var(--line);
}
.brief-row{
  display:grid;
  grid-template-columns:96px 1fr auto;
  align-items:center;
  gap:22px;
  padding:20px 12px 20px 0;
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),padding-left .24s var(--ease);
}
.brief-row:hover{background:rgba(199,238,79,.08);padding-left:12px}
.brief-thumb{
  width:96px;height:96px;
  overflow:hidden;
  border-radius:var(--r-img);
  background:var(--ink-2);
  flex:none;
}
.brief-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease)}
.brief-row:hover .brief-thumb img{transform:scale(1.03)}
.brief-main{min-width:0}
.brief-main .row-top{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-bottom:8px;
}
.brief-main h3{
  font-size:19px;
  line-height:1.5;
  font-weight:700;
  letter-spacing:.01em;
}
.brief-main h3 a:hover{color:var(--lime-d)}
.brief-main p{
  margin-top:6px;
  font-size:15px;
  color:var(--muted);
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
}
.brief-action{
  font-size:14.5px;
  font-weight:600;
  color:var(--muted);
  white-space:nowrap;
  transition:color .22s var(--ease);
}
.brief-row:hover .brief-action{color:var(--ink-2)}

/* ============ 栏目说明（左标题 + 右清单） ============ */
.split{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:clamp(24px,4vw,64px);
  align-items:start;
}
.split-left{
  position:sticky;
  top:104px;
}
.split-left h2{
  font-family:var(--serif);
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.32;
  font-weight:700;
}
.split-left p{margin-top:16px;color:var(--muted);font-size:16px}
.topic-item{
  display:grid;
  grid-template-columns:64px 1fr;
  gap:20px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.topic-item:first-child{border-top:1px solid var(--line)}
.topic-num{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--lime-d);
  border-radius:12px;
  background:rgba(199,238,79,.12);
}
.topic-item h3{font-size:19px;font-weight:700;line-height:1.5}
.topic-item p{margin-top:8px;font-size:16px;color:#41504B}
.topic-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tag{
  font-size:12px;
  letter-spacing:.04em;
  padding:3px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--muted);
  background:#fff;
}

/* ============ 更新提示条 ============ */
.notice{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:26px;
  padding:28px clamp(22px,3vw,40px);
  background:linear-gradient(120deg,#1E2E2A 0%,#14201E 100%);
  border-radius:var(--r-card);
  color:var(--on-dark);
  box-shadow:var(--sh-md);
}
.notice h3{
  font-family:var(--serif);
  font-size:clamp(19px,2vw,24px);
  font-weight:700;
  line-height:1.45;
}
.notice p{margin-top:10px;font-size:15.5px;color:rgba(242,243,238,.78);max-width:52em}
.notice .notice-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ FAQ ============ */
.faq-list{
  max-width:920px;
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  padding:22px 4px;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  border-left:3px solid transparent;
  transition:border-color .26s var(--ease),color .26s var(--ease),padding-left .26s var(--ease);
}
.faq-q:hover{color:var(--ink-2)}
.faq-item.is-open .faq-q{
  border-left-color:var(--lime);
  padding-left:16px;
  color:var(--ink);
}
.faq-icon{
  position:relative;
  flex:none;
  width:18px;height:18px;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  left:50%;top:50%;
  transform:translate(-50%,-50%);
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.faq-icon::before{width:14px;height:1.5px}
.faq-icon::after{width:1.5px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-a-inner{
  padding:0 4px 24px 4px;
  font-size:16px;
  line-height:1.9;
  color:#41504B;
  max-width:46em;
}

/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(120deg,#101917 0%,#1E2E2A 100%);
  color:var(--on-dark);
  padding:clamp(52px,6vw,88px) 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:clamp(28px,4vw,64px);
  align-items:center;
}
.cta-band h2{
  font-family:var(--serif);
  font-size:clamp(26px,3vw,36px);
  line-height:1.32;
  font-weight:700;
}
.cta-band p{margin-top:16px;font-size:16.5px;color:rgba(242,243,238,.8);max-width:40em}
.cta-band .cta-links{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cta-panel{
  background:rgba(246,245,241,.05);
  border:1px solid rgba(199,238,79,.28);
  border-radius:var(--r-card);
  padding:clamp(22px,2.6vw,32px);
}
.cta-panel h3{font-size:17px;font-weight:700;margin-bottom:18px}
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:14px;
  color:rgba(242,243,238,.72);
  margin-bottom:8px;
}
.field input{
  width:100%;
  padding:12px 14px;
  background:rgba(246,245,241,.96);
  border:1px solid transparent;
  border-radius:var(--r-input);
  color:var(--ink);
}
.field input:focus{
  outline:none;
  border-color:var(--lime);
  box-shadow:0 0 0 3px rgba(199,238,79,.3);
}
.field .hint{font-size:13px;color:rgba(242,243,238,.6);margin-top:8px}
.link-plain{
  color:rgba(242,243,238,.82);
  border-bottom:1px solid rgba(199,238,79,.6);
}
.link-plain:hover{color:var(--lime)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-3);
  color:var(--on-dark);
  padding:clamp(48px,5vw,80px) 0 0;
}
.foot-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:36px;
}
.foot-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--on-dark);
}
.foot-brand .brand-mark{box-shadow:none}
.foot-col p{margin-top:16px;font-size:14.5px;color:rgba(242,243,238,.66);line-height:1.8}
.foot-col h4{
  font-size:14px;
  letter-spacing:.08em;
  color:rgba(242,243,238,.5);
  margin-bottom:18px;
  font-weight:600;
}
.foot-col li{margin-bottom:11px}
.foot-col li a{font-size:15px;color:rgba(242,243,238,.82)}
.foot-col li a:hover{color:var(--lime)}
.foot-col .contact-line{font-size:14.5px;color:rgba(242,243,238,.72);line-height:1.9}
.foot-bottom{
  margin-top:clamp(36px,4vw,60px);
  border-top:1px solid rgba(242,243,238,.14);
  padding:22px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13.5px;
  color:rgba(242,243,238,.6);
}
.to-top{
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid rgba(199,238,79,.6);
  color:var(--lime);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background .22s var(--ease),transform .22s var(--ease),color .22s var(--ease);
}
.to-top:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .nav-links{gap:0}
  .nav-links a{padding:8px 9px;font-size:14.5px}
  .icon-btn{display:none}
}
@media (max-width:900px){
  .wrap{padding:0 20px}
  .nav-links{display:none}
  .nav-actions .btn-sm{display:none}
  .burger{display:flex;margin-left:auto}
  .nav-actions{margin-left:auto}
  .page-head{margin-top:68px;padding:48px 0 44px}
  .feature{grid-template-columns:1fr}
  .feature-media{min-height:230px;aspect-ratio:16/9}
  .split{grid-template-columns:1fr}
  .split-left{position:static}
  .cta-inner{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .notice{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .nav-inner{height:56px}
  .site-header.is-scrolled .nav-inner{height:56px}
  .brand{font-size:16px}
  .page-head{margin-top:56px;padding:38px 0 36px}
  .head-stats .item{padding:0 14px}
  .head-stats b{font-size:20px}
  .brief-row{grid-template-columns:72px 1fr;gap:14px;padding:18px 0}
  .brief-thumb{width:72px;height:72px}
  .brief-action{display:none}
  .topic-item{grid-template-columns:48px 1fr;gap:14px}
  .faq-q{font-size:16px;padding:18px 2px}
  .foot-grid{grid-template-columns:1fr}
  .cta-band .cta-links .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#14201E;
  --ink-soft:#1E2E2A;
  --ink-deep:#101917;
  --lime:#C7EE4F;
  --lime-dark:#9FCB1E;
  --clay:#E07A4F;
  --muted:#6F7F7A;
  --line:#E3E4DE;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --on-dark:#F2F3EE;
  --body-text:#3A4744;
  --radius-card:16px;
  --radius-img:12px;
  --radius-badge:6px;
  --radius-input:10px;
  --shadow-sm:0 1px 2px rgba(20,32,30,.06);
  --shadow-md:0 10px 24px -14px rgba(20,32,30,.22);
  --shadow-lg:0 24px 48px -24px rgba(20,32,30,.28);
  --ease:cubic-bezier(.22,.8,.2,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"Inter","SFMono-Regular",Consolas,"Liberation Mono",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:17px;
  line-height:1.9;
  color:var(--body-text);
  background:var(--bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;letter-spacing:.015em;font-weight:700;}
h1{font-size:clamp(34px,4.6vw,58px);line-height:1.14;}
h2{font-size:clamp(26px,3.2vw,38px);line-height:1.28;}
h3{font-size:21px;line-height:1.5;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--ink);text-decoration:none;transition:color .2s var(--ease);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--lime-dark);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,241,.86);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(16,25,23,.92);
  border-bottom-color:rgba(199,238,79,.18);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:68px;transition:height .28s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}
.header-left{display:flex;align-items:center;gap:32px;min-width:0;}
.header-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:700;letter-spacing:.02em;font-size:17px;white-space:nowrap;}
.brand-mark{width:8px;height:8px;background:var(--lime);border-radius:2px;flex:0 0 auto;}
.brand-text{color:var(--ink);transition:color .28s var(--ease);}
.site-header.is-scrolled .brand-text{color:var(--on-dark);}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  font-size:15px;color:var(--body-text);position:relative;padding:4px 0;white-space:nowrap;
}
.site-header.is-scrolled .nav-links a{color:rgba(242,243,238,.78);}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--lime);
  transition:width .24s var(--ease);
}
.nav-links a:hover::after,.nav-links a.is-active::after{width:100%;}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.site-header.is-scrolled .nav-links a.is-active{color:var(--lime);}
.header-search{
  font-size:14px;color:var(--muted);border:1px solid var(--line);border-radius:999px;
  padding:7px 16px;transition:all .22s var(--ease);
}
.header-search:hover{border-color:var(--lime-dark);color:var(--ink);}
.site-header.is-scrolled .header-search{color:rgba(242,243,238,.8);border-color:rgba(242,243,238,.24);}
.site-header.is-scrolled .header-search:hover{color:var(--lime);border-color:var(--lime);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;background:transparent;
  border:1px solid var(--line);cursor:pointer;position:relative;
}
.nav-toggle span{position:absolute;left:11px;right:11px;height:2px;background:var(--ink);border-radius:2px;transition:.2s var(--ease);}
.nav-toggle span:nth-child(1){top:14px;}
.nav-toggle span:nth-child(2){top:20px;}
.nav-toggle span:nth-child(3){top:26px;}
.site-header.is-scrolled .nav-toggle{border-color:rgba(242,243,238,.28);}
.site-header.is-scrolled .nav-toggle span{background:var(--on-dark);}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-sans);font-size:15px;font-weight:600;line-height:1.2;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;text-align:center;transition:all .22s var(--ease);
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--lime-dark);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(20,32,30,.2);border-radius:10px;}
.btn-ghost:hover{border-color:var(--lime-dark);color:var(--ink);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn-on-dark{background:var(--lime);color:var(--ink);}
.btn-on-dark:hover{background:var(--lime-dark);transform:translateY(-2px);}

.link-underline{position:relative;font-weight:600;color:var(--ink);display:inline-block;}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--lime-dark);
  transition:width .24s var(--ease);
}
.link-underline:hover::after{width:100%;}
.link-underline.on-dark{color:var(--on-dark);}
.link-underline.on-dark::after{background:var(--lime);}

.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.1em;color:var(--clay);
  border:1px solid rgba(224,122,79,.4);border-radius:var(--radius-badge);
  padding:4px 10px;margin-bottom:20px;
}
.eyebrow.on-dark{color:var(--lime);border-color:rgba(199,238,79,.4);}

/* ============ Off-canvas drawer ============ */
.off-canvas-content{box-shadow:none;background:var(--bg);}
.off-canvas{background:var(--ink-deep);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px;border-bottom:1px solid rgba(242,243,238,.12);}
.drawer-head .brand-text{color:var(--on-dark);font-weight:700;letter-spacing:.02em;}
.drawer-close{background:transparent;border:0;color:var(--on-dark);font-size:24px;line-height:1;cursor:pointer;padding:4px 8px;}
.drawer-nav{display:flex;flex-direction:column;padding:12px 0;}
.drawer-nav a{
  color:rgba(242,243,238,.82);font-size:16px;padding:14px 20px;border-left:3px solid transparent;
  transition:all .2s var(--ease);
}
.drawer-nav a:hover{background:rgba(199,238,79,.06);color:var(--on-dark);}
.drawer-nav a.is-active{color:var(--lime);border-left-color:var(--lime);background:rgba(199,238,79,.08);}
.drawer-actions{padding:20px;display:flex;flex-direction:column;gap:12px;border-top:1px solid rgba(242,243,238,.12);}

/* ============ Hero ============ */
.cat-hero{
  background:linear-gradient(160deg,var(--ink) 0%,var(--ink-soft) 58%,var(--ink-deep) 100%);
  padding:clamp(56px,7vw,96px) 0 clamp(64px,8vw,104px);
  position:relative;overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:420px;height:420px;
  border:1px solid rgba(199,238,79,.16);border-radius:50%;pointer-events:none;
}
.cat-hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative;z-index:1;
}
.cat-hero h1{color:var(--on-dark);}
.cat-hero .lead{
  margin-top:22px;font-size:19px;line-height:1.85;color:rgba(242,243,238,.76);max-width:34em;
}
.faq-search{
  margin-top:32px;display:flex;gap:10px;background:rgba(242,243,238,.06);
  border:1px solid rgba(242,243,238,.16);border-radius:var(--radius-input);
  padding:8px;max-width:560px;
}
.faq-search input{
  flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;
  color:var(--on-dark);font-size:15px;padding:10px 14px;font-family:var(--font-sans);
  border-radius:8px;
}
.faq-search input::placeholder{color:rgba(242,243,238,.48);}
.faq-search input:focus{background:rgba(242,243,238,.08);box-shadow:0 0 0 2px rgba(199,238,79,.35);}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:0;margin-top:36px;
}
.hero-metrics li{
  display:flex;flex-direction:column;gap:2px;padding-right:24px;margin-right:24px;
  border-right:1px solid rgba(242,243,238,.18);
}
.hero-metrics li:last-child{border-right:0;padding-right:0;margin-right:0;}
.hero-metrics strong{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:22px;color:var(--lime);font-weight:600;
}
.hero-metrics span{font-size:13px;color:rgba(242,243,238,.62);}
.cat-hero-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid rgba(199,238,79,.34);box-shadow:var(--shadow-lg);
}
.cat-hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0;
  transition:transform .5s var(--ease);
}
.cat-hero-media:hover img{transform:scale(1.03);}
.cat-hero-media::after{
  content:"账号安全问答";position:absolute;left:16px;bottom:16px;
  background:rgba(16,25,23,.82);color:var(--lime);font-size:12px;letter-spacing:.06em;
  padding:6px 12px;border-radius:var(--radius-badge);
}

/* ============ Sections ============ */
.section{padding:clamp(64px,8vw,110px) 0;}
.section-alt{background:#FFFFFF;}
.section-head{max-width:760px;margin-bottom:clamp(32px,4vw,56px);}
.section-head p{margin-top:18px;font-size:17px;color:var(--muted);}
.section-label{
  display:inline-block;font-size:12px;letter-spacing:.1em;color:var(--muted);margin-bottom:16px;
  font-family:var(--font-mono);text-transform:uppercase;
}

/* ============ Quick check ============ */
.check-row{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.check-row li{
  padding:28px 24px 28px 0;border-right:1px solid var(--line);
}
.check-row li:last-child{border-right:0;padding-right:0;}
.check-row li:not(:first-child){padding-left:24px;}
.check-no{
  display:block;font-family:var(--font-serif);font-size:15px;color:var(--clay);margin-bottom:10px;letter-spacing:.06em;
}
.check-row p{font-size:16px;line-height:1.75;color:var(--ink);}

/* ============ FAQ layout ============ */
.faq-wrap{display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;align-items:start;}
.faq-aside{position:sticky;top:110px;}
.aside-title{
  font-size:12px;letter-spacing:.1em;color:var(--muted);font-family:var(--font-mono);
  text-transform:uppercase;margin-bottom:16px;
}
.anchor-list{border-left:1px solid var(--line);}
.anchor-list a{
  display:block;font-size:15px;color:var(--muted);padding:11px 0 11px 18px;
  border-left:3px solid transparent;margin-left:-2px;transition:all .2s var(--ease);
}
.anchor-list a:hover{color:var(--ink);border-left-color:rgba(199,238,79,.6);}
.anchor-list a.is-active{color:var(--ink);font-weight:600;border-left-color:var(--lime-dark);}
.aside-note{
  margin-top:28px;font-size:13.5px;line-height:1.8;color:var(--muted);
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-card);padding:18px;
}
.faq-main{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 32px;align-items:start;}
.faq-group h3{
  display:flex;align-items:center;gap:10px;font-size:19px;margin-bottom:16px;padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.faq-group h3::before{
  content:"";width:10px;height:10px;background:var(--lime);border-radius:2px;flex:0 0 auto;
}
.accordion{border:0;background:transparent;margin:0;}
.faq-accordion .accordion-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-accordion .accordion-item:hover{border-color:rgba(20,32,30,.2);box-shadow:var(--shadow-md);}
.faq-accordion .accordion-title{
  position:relative;display:block;font-size:16.5px;font-weight:600;color:var(--ink);
  background:transparent;border:0;padding:17px 46px 17px 20px;line-height:1.55;
  font-family:var(--font-sans);transition:color .2s var(--ease);
}
.faq-accordion .accordion-title::before{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  font-size:19px;font-weight:300;line-height:1;color:var(--muted);transition:color .2s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{content:"−";color:var(--ink);}
.faq-accordion .accordion-title::after{
  content:"";position:absolute;left:0;top:13px;bottom:13px;width:3px;
  background:transparent;transition:background .2s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::after{background:var(--lime);}
.faq-accordion .accordion-item.is-active .accordion-title{color:var(--ink);}
.faq-accordion .accordion-content{
  background:transparent;border:0;border-top:1px solid var(--line);
  padding:16px 20px 20px;font-size:15.5px;line-height:1.9;color:var(--body-text);
}

/* ============ Table ============ */
.table-scroll{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--card);box-shadow:var(--shadow-sm);
}
.hint-table{width:100%;min-width:760px;border-collapse:collapse;}
.hint-table th{
  background:var(--ink);color:var(--on-dark);text-align:left;font-size:14px;font-weight:600;
  letter-spacing:.04em;padding:15px 22px;white-space:nowrap;
}
.hint-table td{
  padding:17px 22px;border-top:1px solid var(--line);font-size:15px;line-height:1.8;
  color:var(--body-text);vertical-align:top;
}
.hint-table td:first-child{color:var(--ink);font-weight:600;}
.hint-table tbody tr{transition:background .2s var(--ease);}
.hint-table tbody tr:hover{background:#FAFAF7;}

/* ============ Habits ============ */
.habits-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.dot-list{margin-top:28px;display:flex;flex-direction:column;gap:16px;}
.dot-list li{
  position:relative;padding-left:26px;font-size:16.5px;line-height:1.85;color:var(--body-text);
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:12px;width:9px;height:9px;background:var(--lime);
  border-radius:2px;
}
.habits-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-md);}
.habits-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);}
.habits-media:hover img{transform:scale(1.03);}

/* ============ CTA band ============ */
.cta-band{
  background:linear-gradient(120deg,var(--ink-deep) 0%,var(--ink-soft) 100%);
  padding:clamp(56px,7vw,88px) 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:48px;flex-wrap:wrap;}
.cta-inner h2{color:var(--on-dark);max-width:18em;}
.cta-inner p{margin-top:16px;color:rgba(242,243,238,.7);font-size:16.5px;max-width:36em;}
.cta-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;}

/* ============ Footer ============ */
.site-footer{background:var(--ink-deep);color:rgba(242,243,238,.72);padding:clamp(56px,7vw,88px) 0 0;}
.footer-top{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(242,243,238,.12);
}
.footer-col h4,.footer-col-toggle{
  font-family:var(--font-sans);font-size:13px;letter-spacing:.1em;color:rgba(242,243,238,.5);
  margin-bottom:18px;text-transform:uppercase;
}
.footer-col-toggle{
  display:block;width:100%;text-align:left;background:transparent;border:0;padding:0;cursor:default;
}
.footer-col-body ul{display:flex;flex-direction:column;gap:12px;}
.footer-col-body a{color:rgba(242,243,238,.76);font-size:15px;}
.footer-col-body a:hover{color:var(--lime);}
.footer-col-body p{font-size:15px;line-height:1.85;margin-top:16px;}
.brand-invert .brand-text{color:var(--on-dark);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:26px 0 34px;font-size:13.5px;color:rgba(242,243,238,.5);
}
.footer-bottom p{margin:0;}
.back-top{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--on-dark);
  border:1px solid rgba(199,238,79,.5);border-radius:999px;padding:8px 18px;
  transition:all .22s var(--ease);
}
.back-top:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ============ Responsive ============ */
@media (max-width:1024px){
  .container{padding:0 28px;}
  .nav-links,.header-search{display:none;}
  .nav-toggle{display:block;}
  .cat-hero-grid{grid-template-columns:1fr;gap:40px;}
  .cat-hero-media img{aspect-ratio:16/9;}
  .check-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-row li{padding:24px 20px 24px 0;border-bottom:1px solid var(--line);}
  .check-row li:nth-child(2n){border-right:0;padding-right:0;}
  .check-row li:nth-child(2n+1){padding-left:0;}
  .check-row li:nth-child(n+3){border-bottom:0;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .anchor-list{display:flex;flex-wrap:wrap;gap:8px;border-left:0;}
  .anchor-list a{
    border:1px solid var(--line);border-radius:999px;padding:8px 16px;margin-left:0;
    font-size:14px;background:#FFFFFF;
  }
  .anchor-list a:hover{border-color:var(--lime-dark);}
  .anchor-list a.is-active{border-color:var(--lime-dark);background:rgba(199,238,79,.16);}
  .aside-note{display:none;}
  .faq-main{grid-template-columns:1fr;gap:28px;}
  .habits-grid{grid-template-columns:1fr;gap:36px;}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:640px){
  body{font-size:16.5px;}
  .container{padding:0 20px;}
  .header-inner{height:56px;}
  .site-header.is-scrolled .header-inner{height:56px;}
  .brand{font-size:15.5px;}
  .header-right .btn-sm{display:none;}
  .cat-hero{padding:48px 0 64px;}
  .cat-hero .lead{font-size:17px;}
  .faq-search{flex-direction:column;padding:12px;gap:12px;}
  .faq-search input{padding:10px 6px;}
  .hero-metrics{gap:16px 0;}
  .hero-metrics li{padding-right:16px;margin-right:16px;}
  .hero-metrics strong{font-size:19px;}
  .check-row{grid-template-columns:1fr;}
  .check-row li{border-right:0;padding:20px 0;border-bottom:1px solid var(--line);}
  .check-row li:nth-child(n+3){border-bottom:1px solid var(--line);}
  .check-row li:last-child{border-bottom:0;}
  .faq-accordion .accordion-title{font-size:16px;padding:15px 42px 15px 18px;}
  .faq-accordion .accordion-content{padding:14px 18px 18px;font-size:15px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
  .cta-actions .btn,.cta-actions .link-underline{width:100%;justify-content:center;text-align:center;}
  .footer-top{grid-template-columns:1fr;gap:0;padding-bottom:24px;}
  .footer-col{border-bottom:1px solid rgba(242,243,238,.12);}
  .footer-col-toggle{
    cursor:pointer;padding:18px 0;margin:0;display:flex;align-items:center;justify-content:space-between;
    color:rgba(242,243,238,.72);font-size:14.5px;letter-spacing:.02em;text-transform:none;
  }
  .footer-col-toggle::after{content:"+";font-size:18px;color:var(--lime);line-height:1;}
  .footer-col.is-open .footer-col-toggle::after{content:"−";}
  .footer-col-body{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
  .footer-col.is-open .footer-col-body{max-height:520px;padding-bottom:20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --ink:#14201E;
  --ink-2:#1E2E2A;
  --ink-deep:#101917;
  --lime:#C7EE4F;
  --lime-2:#9FCB1E;
  --clay:#E07A4F;
  --muted:#6F7F7A;
  --line:#E3E4DE;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --on-dark:#F2F3EE;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"Inter","SFMono-Regular","Consolas","Menlo",monospace;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(20,32,30,.06);
  --sh-md:0 10px 24px -14px rgba(20,32,30,.22);
  --sh-lg:0 24px 48px -24px rgba(20,32,30,.28);
  --ease:cubic-bezier(.22,.8,.2,1);
  --sec-y:clamp(64px,9vw,132px);
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:var(--nav-h);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;background:transparent;transition:color .22s var(--ease),border-color .22s var(--ease),opacity .22s var(--ease)}
a:hover,a:focus{color:var(--ink)}
button,input,select,textarea{font-family:inherit;font-size:100%;color:inherit;line-height:1.6}
button{border:0;background:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1.2em}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-serif);
  font-weight:700;
  letter-spacing:.015em;
  line-height:1.28;
  color:var(--ink);
}
h1{font-size:clamp(30px,5vw,54px);line-height:1.16}
h2{font-size:clamp(26px,3.2vw,38px)}
h3{font-size:clamp(19px,2vw,22px);line-height:1.5}
table{border-collapse:collapse;width:100%;margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}

/* ---------- 覆盖 Foundation 默认外观 ---------- */
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dd,figure,blockquote{margin:0;padding:0}
h1,h2,h3,h4,h5,h6,button,a{font-family:inherit}
h1,h2,h3,h4,h5,h6{font-family:var(--font-serif)}
a{color:inherit}
a:hover,a:focus{color:var(--ink)}
button,.button{background-image:none;box-shadow:none;border-radius:0;color:inherit}
input,textarea,select{border-radius:var(--r-input);box-shadow:none}
.accordion,.accordion-item,.accordion-title,.accordion-content,.menu,.tabs,.tab-title,.tab-bar{background:none;border:0;box-shadow:none;font-family:var(--font-sans)}
.grid-x{margin-left:0;margin-right:0}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell,.columns{padding-left:12px;padding-right:12px}
.row{max-width:none;margin-left:-12px;margin-right:-12px}
.row::before,.row::after{display:none}
table,thead,tbody,tr,th,td{background:transparent;border:0}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:40px;padding-right:40px}
.container-wide{max-width:1280px}
.section{padding-top:var(--sec-y);padding-bottom:var(--sec-y)}
.section-tight{padding-top:clamp(48px,6vw,88px);padding-bottom:clamp(48px,6vw,88px)}
.section-dark{background:var(--ink-deep);color:var(--on-dark)}
.section-dark h2,.section-dark h3{color:#fff}
.section-soft{background:#FFFFFF}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  height:var(--nav-h);
  background:rgba(16,25,23,.78);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(242,243,238,.08);
  transition:height .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{height:60px;background:rgba(16,25,23,.95);box-shadow:0 12px 32px -22px rgba(0,0,0,.7)}
.header-inner{
  max-width:1240px;margin:0 auto;padding:0 40px;height:100%;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand-area{display:flex;align-items:center;gap:36px;min-width:0}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-sans);font-weight:700;font-size:17px;letter-spacing:.02em;
  color:#fff;white-space:nowrap;
}
.logo:hover,.logo:focus{color:var(--lime)}
.logo-mark{
  display:inline-block;width:8px;height:8px;border-radius:2px;
  background:var(--lime);flex:0 0 8px;
  box-shadow:0 0 0 3px rgba(199,238,79,.14);
}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:8px;
  font-size:15px;color:rgba(242,243,238,.76);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(242,243,238,.08)}
.nav-links a.is-active{color:var(--ink);background:var(--lime)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(242,243,238,.22);
  color:rgba(242,243,238,.85);
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.icon-btn:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-1px)}
.hamburger{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--on-dark);transition:transform .25s var(--ease),opacity .25s var(--ease)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,25,23,.55);
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);z-index:130;
}
.drawer-mask.is-show{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--ink);color:var(--on-dark);
  z-index:140;transform:translateX(102%);
  transition:transform .34s var(--ease);
  display:flex;flex-direction:column;padding:24px 22px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-nav a{
  padding:14px 14px;border-radius:10px;font-size:16px;
  color:rgba(242,243,238,.82);border-left:3px solid transparent;
}
.drawer-nav a.is-active{color:#fff;background:rgba(199,238,79,.12);border-left-color:var(--lime)}
.drawer-foot{margin-top:20px}
.drawer-close{width:40px;height:40px;border-radius:50%;border:1px solid rgba(242,243,238,.22);color:var(--on-dark);display:flex;align-items:center;justify-content:center}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-sans);font-weight:600;font-size:15.5px;
  padding:13px 26px;border-radius:999px;
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--sh-sm)}
.btn-primary:hover,.btn-primary:focus{background:var(--lime-2);color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-ghost{border:1px solid rgba(20,32,30,.2);color:var(--ink);background:transparent;border-radius:10px}
.btn-ghost:hover,.btn-ghost:focus{border-color:var(--lime);color:var(--ink);transform:translateY(-2px)}
.btn-ghost-light{border:1px solid rgba(242,243,238,.32);color:var(--on-dark);background:transparent;border-radius:10px}
.btn-ghost-light:hover,.btn-ghost-light:focus{border-color:var(--lime);color:var(--lime)}
.btn-sm{padding:9px 20px;font-size:14.5px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15.5px;
  padding-bottom:3px;position:relative;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--lime);
  transition:width .24s var(--ease);
}
.link-arrow:hover::after,.link-arrow:focus::after{width:100%}

/* ---------- 首屏横幅 ---------- */
.page-banner{
  position:relative;
  background-color:var(--ink);
  background-image:linear-gradient(100deg,rgba(16,25,23,.94) 0%,rgba(16,25,23,.82) 46%,rgba(16,25,23,.55) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  color:var(--on-dark);
  padding:clamp(56px,8vw,104px) 0 clamp(52px,7vw,92px);
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:260px;height:260px;
  border:1px solid rgba(199,238,79,.28);transform:rotate(18deg);pointer-events:none;
}
.crumbs{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(242,243,238,.62);margin-bottom:22px;flex-wrap:wrap}
.crumbs a{color:rgba(242,243,238,.82);border-bottom:1px solid transparent}
.crumbs a:hover{color:var(--lime);border-bottom-color:var(--lime)}
.crumbs .sep{color:rgba(242,243,238,.34)}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;font-weight:600;
  padding:5px 12px;border-radius:var(--r-badge);
  border:1px solid rgba(199,238,79,.45);color:var(--lime);
  margin-bottom:20px;
}
.page-banner h1{color:#fff;max-width:20em}
.banner-lead{
  margin-top:20px;max-width:44em;
  font-size:clamp(16.5px,1.6vw,19px);line-height:1.85;
  color:rgba(242,243,238,.78);
}
.banner-meta{
  display:flex;flex-wrap:wrap;gap:0;margin-top:32px;
  border-top:1px solid rgba(242,243,238,.14);
  padding-top:20px;
}
.banner-meta li{
  padding:0 26px;
  font-size:14px;color:rgba(242,243,238,.72);
  border-left:1px solid rgba(242,243,238,.14);
}
.banner-meta li:first-child{padding-left:0;border-left:0}
.banner-meta strong{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:20px;color:var(--lime);letter-spacing:.02em;
}

/* ---------- 通用标题区 ---------- */
.sec-head{max-width:760px;margin-bottom:clamp(32px,4vw,56px)}
.sec-head .eyebrow{
  display:block;font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  color:var(--muted);margin-bottom:14px;text-transform:uppercase;
}
.sec-head h2{margin-bottom:16px}
.sec-head p{color:var(--muted);font-size:17px;line-height:1.9;margin:0}
.sec-head.on-dark p{color:rgba(242,243,238,.7)}

/* ---------- 定义式对照列表 ---------- */
.spec-list{border-top:1px solid var(--line)}
.spec-row{
  display:grid;grid-template-columns:3fr 9fr;gap:24px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background .24s var(--ease);
}
.spec-row:hover{background:#fff}
.spec-term{
  font-family:var(--font-serif);font-weight:700;font-size:18px;line-height:1.5;
  color:var(--ink);display:flex;align-items:baseline;gap:10px;
}
.spec-term::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:2px;
  background:var(--lime);flex:0 0 6px;transform:translateY(-3px);
}
.spec-desc{font-size:16.5px;line-height:1.9;color:#33403C}
.spec-desc strong{color:var(--ink)}
.spec-note{
  display:inline-block;margin-top:10px;
  font-size:14px;color:var(--muted);
}

/* ---------- 表格 ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;
  box-shadow:var(--sh-sm);
}
.table-wrap table{min-width:680px;border-collapse:collapse}
.table-wrap th,.table-wrap td{
  padding:16px 20px;text-align:left;font-size:15.5px;line-height:1.75;
  border-bottom:1px solid var(--line);vertical-align:top;
}
.table-wrap thead th{
  background:var(--ink);color:#fff;font-family:var(--font-sans);font-weight:600;
  font-size:15px;letter-spacing:.02em;border-bottom:0;white-space:nowrap;
}
.table-wrap tbody tr:last-child td{border-bottom:0}
.table-wrap tbody tr:hover td{background:#FBFAF7}
.table-wrap td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
.table-wrap .cell-tag{
  display:inline-block;font-size:12px;letter-spacing:.06em;
  padding:3px 9px;border-radius:var(--r-badge);
  border:1px solid rgba(224,122,79,.55);color:var(--clay);
}

/* ---------- 时间轴 ---------- */
.tl-wrap{position:relative;padding-left:8px}
.tl-item{position:relative;display:grid;grid-template-columns:96px 1fr;gap:24px;padding:0 0 34px 34px}
.tl-item::before{
  content:"";position:absolute;left:7px;top:10px;width:12px;height:12px;border-radius:50%;
  background:var(--bg);border:2px solid var(--lime);z-index:2;
}
.tl-item::after{
  content:"";position:absolute;left:12px;top:22px;bottom:0;width:1px;background:var(--line);
}
.tl-item:last-child::after{display:none}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:15px;letter-spacing:.06em;color:var(--muted);padding-top:2px;
}
.tl-body h3{margin-bottom:8px}
.tl-body p{font-size:16.5px;color:#33403C;margin:0}
.tl-body ul{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}
.tl-body ul li{
  font-size:13.5px;color:var(--muted);background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:4px 12px;
}

/* ---------- 图文补充区 ---------- */
.figure-block{
  display:grid;grid-template-columns:6fr 6fr;gap:clamp(24px,3vw,48px);align-items:center;
}
.figure-block.reverse .figure-media{order:2}
.figure-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);background:var(--ink)}
.figure-media img{width:100%;height:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .5s var(--ease)}
.figure-media:hover img{transform:scale(1.03)}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:22px}
.check-list li{
  display:grid;grid-template-columns:22px 1fr;gap:12px;
  font-size:16.5px;color:#33403C;line-height:1.85;
}
.check-list li::before{
  content:"";width:9px;height:9px;margin-top:9px;border-radius:2px;background:var(--lime);
  box-shadow:0 0 0 4px rgba(199,238,79,.18);
}
.check-list li b{color:var(--ink);font-weight:600}

/* ---------- 问答 ---------- */
.qa-toolbar{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;
}
.qa-chip{
  font-size:13.5px;padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--muted);
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.qa-chip:hover{border-color:var(--lime);color:var(--ink)}
.qa-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.qa-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
  align-self:start;
}
.qa-item:hover{border-color:rgba(20,32,30,.2);box-shadow:var(--sh-md)}
.qa-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;
  font-family:var(--font-sans);font-size:17px;font-weight:600;color:var(--ink);
  position:relative;
}
.qa-head::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;
  background:var(--lime);opacity:0;transition:opacity .24s var(--ease);
}
.qa-item.is-open .qa-head::before{opacity:1}
.qa-icon{position:relative;width:14px;height:14px;flex:0 0 14px}
.qa-icon::before,.qa-icon::after{
  content:"";position:absolute;background:var(--muted);border-radius:2px;
  transition:transform .26s var(--ease),background .26s var(--ease);
}
.qa-icon::before{left:0;top:6px;width:14px;height:1.5px}
.qa-icon::after{left:6.25px;top:0;width:1.5px;height:14px}
.qa-item.is-open .qa-icon::after{transform:scaleY(0)}
.qa-item.is-open .qa-icon::before{background:var(--ink)}
.qa-body{
  max-height:0;overflow:hidden;
  transition:max-height .26s var(--ease);
}
.qa-body-inner{
  padding:0 22px 22px;font-size:16.5px;line-height:1.9;color:#33403C;
  border-top:1px solid var(--line);padding-top:18px;margin:0 0 0 0;
}
.qa-body-inner p:last-child{margin-bottom:0}

/* ---------- CTA 深色带 ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--ink-deep) 0%,var(--ink-2) 100%);
  color:var(--on-dark);
  padding:clamp(56px,7vw,104px) 0;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;top:-60px;width:220px;height:220px;
  border:1px solid rgba(199,238,79,.22);transform:rotate(24deg);
}
.cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:clamp(24px,4vw,56px);align-items:center;position:relative;z-index:2}
.cta-band h2{color:#fff;margin-bottom:16px}
.cta-band p{color:rgba(242,243,238,.74);font-size:16.5px;margin-bottom:26px;max-width:36em}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.cta-facts{
  background:rgba(242,243,238,.05);border:1px solid rgba(242,243,238,.12);
  border-radius:var(--r-card);padding:26px 26px;
}
.cta-facts li{
  display:flex;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px dashed rgba(242,243,238,.16);
  font-size:15px;color:rgba(242,243,238,.72);
}
.cta-facts li:last-child{border-bottom:0;padding-bottom:0}
.cta-facts b{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--lime);font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:var(--on-dark);padding-top:clamp(52px,6vw,84px)}
.foot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.foot-brand .logo{font-size:17px}
.foot-brand p{
  margin-top:16px;font-size:14.5px;color:rgba(242,243,238,.62);line-height:1.8;max-width:24em;
}
.foot-sign{
  margin-top:18px;font-size:14px;color:rgba(242,243,238,.7);
  border-left:3px solid var(--lime);padding-left:12px;
}
.foot-sign strong{color:#fff;font-weight:600}
.foot-col h3{
  font-family:var(--font-sans);font-size:15px;font-weight:600;color:#fff;
  letter-spacing:.02em;margin-bottom:16px;
}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14.5px;color:rgba(242,243,238,.66)}
.foot-col a:hover{color:var(--lime)}
.foot-col address{font-style:normal;font-size:14.5px;color:rgba(242,243,238,.66);line-height:1.9}
.foot-col details summary{
  display:none;list-style:none;cursor:pointer;
  font-size:15px;font-weight:600;color:#fff;padding:14px 0;
  border-bottom:1px solid rgba(242,243,238,.12);
}
.foot-col details summary::-webkit-details-marker{display:none}
.foot-bottom{
  margin-top:clamp(36px,4vw,56px);padding:22px 0 28px;
  border-top:1px solid rgba(242,243,238,.12);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.foot-bottom p{font-size:13.5px;color:rgba(242,243,238,.52);margin:0}
.to-top{
  width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(199,238,79,.5);color:var(--lime);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.to-top:hover{background:var(--lime);color:var(--ink);transform:translateY(-3px)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .figure-media:hover img{transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .nav-links a{padding:8px 9px;font-size:14.5px}
}
@media (max-width:1024px){
  :root{--sec-y:clamp(56px,8vw,96px)}
  .nav-links{display:none}
  .hamburger{display:flex}
  .header-inner{padding:0 24px}
  .container{padding-left:24px;padding-right:24px}
  .qa-list{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr}
  .figure-block{grid-template-columns:1fr}
  .figure-block.reverse .figure-media{order:0}
}
@media (max-width:768px){
  :root{--nav-h:56px}
  body{padding-top:56px;font-size:16.5px}
  .header-inner{padding:0 20px}
  .container{padding-left:20px;padding-right:20px}
  .logo{font-size:15.5px}
  .nav-actions .btn{display:none}
  .spec-row{grid-template-columns:1fr;gap:10px;padding:22px 0}
  .spec-term{font-size:17px}
  .banner-meta li{padding:0 16px;font-size:13px}
  .banner-meta li:first-child{padding-left:0}
  .tl-item{grid-template-columns:1fr;gap:6px;padding-left:28px}
  .foot-grid{grid-template-columns:1fr;gap:0}
  .foot-brand{padding-bottom:20px;border-bottom:1px solid rgba(242,243,238,.12)}
  .foot-col h3{display:none}
  .foot-col details summary{display:block}
  .foot-col details{padding:0 0 4px}
  .foot-col details .foot-body{padding:4px 0 16px}
  .foot-bottom{justify-content:space-between}
}
@media (max-width:520px){
  h1{font-size:30px}
  .banner-lead{font-size:16px}
  .btn{padding:12px 20px;font-size:15px}
  .banner-meta{gap:0}
  .banner-meta li{flex:1 1 100%;padding:12px 0;border-left:0;border-top:1px solid rgba(242,243,238,.12)}
  .banner-meta li:first-child{border-top:0}
  .qa-head{font-size:16px;padding:18px}
  .qa-body-inner{padding:16px 18px 20px}
}