/* roulang page: index */
:root{
  --lime:#BDFF2F;
  --lime-deep:#A8EA1E;
  --clay:#E2542C;
  --ink:#0F1412;
  --sand:#F4F1EA;
  --card:#FFFFFF;
  --text:#1A1F1C;
  --muted:#5A615C;
  --line:#D8D3C7;
  --radius-card:16px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(15,20,18,.06);
  --shadow-2:0 12px 32px -12px rgba(15,20,18,.16);
  --tr:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--sand);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.88;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--tr)}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.28;letter-spacing:-0.02em;color:var(--text)}
h1{font-weight:900}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:var(--lime);color:var(--ink)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section--tight{padding-top:88px}
.section--ink{background:var(--ink);color:#EDEFEA}
.section--ink h2,.section--ink h3{color:#FFFFFF}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--muted);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--clay);flex:0 0 auto}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.section-head h2{font-size:clamp(26px,3vw,34px);max-width:640px}
.section-lead{color:var(--muted);max-width:600px;margin-top:14px;font-size:16px}
.section-head--stack{flex-direction:column;align-items:flex-start}

.grid-gap{row-gap:32px}
.grid-gap-sm{row-gap:24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;
  padding:14px 28px;border-radius:var(--radius-pill);
  border:1px solid transparent;
  transition:background var(--tr),color var(--tr),border-color var(--tr),transform var(--tr);
  white-space:nowrap;
}
.btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-primary:hover{background:var(--lime-deep);border-color:var(--lime-deep);transform:translateY(-1px);color:var(--ink)}
.btn-dark{background:var(--ink);color:var(--lime);border-color:var(--ink)}
.btn-dark:hover{background:#1B241F;transform:translateY(-1px);color:var(--lime)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--lime);transform:translateY(-1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--text);
  position:relative;padding-bottom:2px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--lime);transition:width var(--tr);
}
.link-arrow:hover::after{width:100%}
.link-arrow span{color:var(--clay);font-weight:700}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--radius-pill);
  background:var(--sand);border:1px solid var(--line);
  font-size:13px;color:var(--muted);line-height:1;
}
.tag--dark{background:rgba(189,255,47,.14);border-color:transparent;color:var(--lime)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(244,241,234,.94);
  border-bottom:1px solid transparent;
  transition:border-color var(--tr),background var(--tr);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(244,241,234,.98)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-0.02em}
.brand-mark{width:7px;height:18px;border-radius:2px;background:var(--lime);transform:skewX(-16deg);flex:0 0 auto}
.brand-text{line-height:1}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-link{
  position:relative;font-size:15px;color:var(--muted);
  letter-spacing:.04em;padding:6px 0;transition:color var(--tr);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-2px;height:3px;width:0;
  background:var(--lime);border-radius:2px;transition:width var(--tr);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:16px}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  align-items:center;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text);transition:transform var(--tr),opacity var(--tr)}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 96px}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(118deg,rgba(15,20,18,.05) 0 1px,transparent 1px 15px);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;
  border:1px solid rgba(15,20,18,.09);border-radius:50%;pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.hero-copy{max-width:560px}
.hero h1{font-size:clamp(32px,4vw,52px);line-height:1.16;margin-bottom:20px}
.hero-sub{font-size:19px;color:var(--clay);font-weight:600;letter-spacing:-0.01em;margin-bottom:18px}
.hero-text{color:var(--muted);max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:44px;flex-wrap:wrap}
.hero-stats .stat{min-width:96px}
.hero-stats strong{
  display:block;font-size:24px;font-weight:800;line-height:1.2;
  font-variant-numeric:tabular-nums;letter-spacing:-0.02em;
}
.hero-stats span{display:block;font-size:13px;color:var(--muted);margin-top:4px}
.hero-media{margin-top:0}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--line);box-shadow:var(--shadow-1);
}

/* ---------- 功能分组 ---------- */
.feature-item{border-top:1px solid var(--line);padding-top:26px;display:flex;gap:22px;height:100%}
.feature-num{
  font-size:15px;font-weight:800;color:var(--clay);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;flex:0 0 auto;padding-top:2px;
}
.feature-body h3{font-size:21px;margin-bottom:12px}
.feature-body p{color:var(--muted);font-size:15.5px;margin-bottom:10px}
.feature-body p:last-child{margin-bottom:0}

/* ---------- 场景 zigzag ---------- */
.scene{display:flex;align-items:center;gap:56px;padding:44px 0;border-top:1px solid var(--line)}
.scene:first-of-type{border-top:0;padding-top:0}
.scene:nth-child(even){flex-direction:row-reverse}
.scene-media{flex:1 1 46%;min-width:0}
.scene-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--line);
}
.scene-body{flex:1 1 54%;min-width:0}
.scene-body h3{font-size:24px;margin-bottom:14px}
.scene-body p{color:var(--muted);margin-bottom:20px}

/* ---------- 案例 ---------- */
.case-main{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:40px;box-shadow:var(--shadow-1);height:100%;
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.case-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--lime)}
.case-num{
  font-size:clamp(48px,6vw,72px);font-weight:900;line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-0.03em;margin:22px 0 18px;
}
.case-num span{font-size:.42em;color:var(--clay);margin-left:4px;font-weight:800}
.case-main p{color:var(--muted)}
.case-sub{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);height:100%;
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.case-sub:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--lime)}
.case-sub strong{
  display:block;font-size:32px;font-weight:900;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-0.02em;margin-bottom:10px;
}
.case-sub h3{font-size:17px;margin-bottom:8px}
.case-sub p{color:var(--muted);font-size:14.5px;margin:0}

/* ---------- 价格 ---------- */
.billing-toggle{
  display:inline-flex;padding:4px;border:1px solid var(--line);border-radius:var(--radius-pill);
  background:var(--card);gap:2px;
}
.billing-toggle span{
  padding:8px 20px;border-radius:var(--radius-pill);font-size:14px;font-weight:600;color:var(--muted);
}
.billing-toggle span.is-on{background:var(--ink);color:var(--lime)}
.price-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:34px;height:100%;
  display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--lime)}
.price-card h3{font-size:19px;margin-bottom:18px}
.price-num{font-size:44px;font-weight:900;line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-0.03em}
.price-num .cur{font-size:20px;vertical-align:super;margin-right:2px;font-weight:700}
.price-num .unit{font-size:14px;font-weight:500;color:var(--muted);margin-left:8px;letter-spacing:0}
.price-list{margin:24px 0 28px;flex:1 1 auto}
.price-list li{
  font-size:15px;color:var(--muted);padding:10px 0;border-bottom:1px solid var(--line);
}
.price-list li:last-child{border-bottom:0}
.price-card.is-featured{background:var(--ink);border-color:var(--ink);color:#EDEFEA}
.price-card.is-featured h3{color:#FFFFFF}
.price-card.is-featured .price-num{color:var(--lime)}
.price-card.is-featured .price-num .unit{color:#A7AFA8}
.price-card.is-featured .price-list li{color:#C9CFC9;border-bottom-color:rgba(255,255,255,.1)}
.badge-rec{
  position:absolute;top:26px;right:26px;height:24px;padding:0 12px;
  display:inline-flex;align-items:center;border-radius:var(--radius-pill);
  background:var(--lime);color:var(--ink);font-size:12px;font-weight:700;letter-spacing:.04em;
}

/* ---------- 资讯列表 ---------- */
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  box-shadow:var(--shadow-1);transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--lime)}
.post-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.post-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto}
.post-body .tag{align-self:flex-start;margin-bottom:14px}
.post-title{font-size:18px;line-height:1.45;margin-bottom:12px}
.post-title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a:hover{color:var(--clay)}
.post-excerpt{
  color:var(--muted);font-size:14.5px;line-height:1.8;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;font-size:13px;color:var(--muted);
  font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:10px;
}
.post-meta::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);flex:0 0 auto}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;color:var(--muted);background:var(--card);
}
.empty-state p{margin-bottom:20px}

/* ---------- FAQ ---------- */
.faq-list{border-bottom:1px solid var(--line)}
.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;font-size:18px;font-weight:600;color:var(--text);line-height:1.6;
  transition:color var(--tr);
}
.faq-q:hover{color:var(--clay)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--muted);transition:transform var(--tr),background var(--tr);
}
.faq-icon::before{left:0;top:7px;width:16px;height:1.5px}
.faq-icon::after{top:0;left:7px;width:1.5px;height:16px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);background:var(--clay)}
.faq-item.is-open .faq-icon::before{background:var(--clay)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease}
.faq-a p{font-size:15px;color:var(--muted);padding:0 48px 24px 0;margin:0}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink);position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-220px;width:440px;height:440px;
  border:1px solid rgba(189,255,47,.22);border-radius:50%;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:76px 0;flex-wrap:wrap;
}
.cta-title{font-size:clamp(24px,3vw,32px);font-weight:900;color:#FFFFFF;letter-spacing:-0.02em;margin:0}
.cta-actions{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.cta-band .link-arrow{color:#C9CFC9}
.cta-band .link-arrow:hover{color:var(--lime)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C9CFC9;padding:80px 0 0;font-size:14.5px}
.footer-grid{row-gap:40px}
.footer-brand .brand{color:#FFFFFF;margin-bottom:18px}
.footer-brand p{color:#9AA29B;max-width:320px;font-size:14.5px;line-height:1.85}
.footer-col{border-left:1px solid rgba(255,255,255,.09);padding-left:28px}
.footer-col h4{font-size:15px;color:#FFFFFF;margin-bottom:18px;letter-spacing:0}
.footer-col a{display:block;color:#C9CFC9;padding:6px 0;font-size:14.5px}
.footer-col a:hover{color:var(--lime)}
.footer-col p{color:#9AA29B;margin-bottom:8px}
.footer-bottom{
  margin-top:64px;border-top:1px solid rgba(255,255,255,.09);
  padding:24px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:#8B938C;flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:76px;bottom:0;z-index:110;
    background:var(--sand);flex-direction:column;align-items:flex-start;gap:0;
    padding:36px 24px;display:none;
  }
  body.nav-open .nav-links{display:flex}
  .nav-link{font-size:20px;padding:14px 0;color:var(--text)}
  .nav-toggle{display:flex}
  .hero{padding:52px 0 72px}
  .hero-media{margin-top:44px}
  .hero::after{width:360px;height:360px;right:-160px;top:-160px}
  .scene{flex-direction:column;gap:28px;padding:40px 0}
  .scene:nth-child(even){flex-direction:column}
  .scene-media,.scene-body{flex:1 1 auto;width:100%}
  .footer-col{border-left:0;padding-left:0}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .section--tight{padding-top:56px}
  .section-head{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:36px}
  .section-head h2{max-width:none}
  .hero-stats{gap:28px;margin-top:34px}
  .cta-inner{padding:56px 0;gap:28px}
  .footer-col{border-left:1px solid rgba(255,255,255,.09);padding-left:22px}
  .case-main{padding:30px}
  .price-card{padding:28px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  body{font-size:16px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:17px}
  .hero-actions{gap:16px}
  .hero-actions .btn{width:100%}
  .feature-item{gap:16px}
  .post-body{padding:20px}
  .faq-q{font-size:16.5px}
  .faq-a p{padding-right:0}
  .price-num{font-size:38px}
  .footer-col{border-left:0;padding-left:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#0F1412;
  --ink-soft:#1B231F;
  --paper:#F4F1EA;
  --card:#FFFFFF;
  --text:#1A1F1C;
  --muted:#5A615C;
  --line:#D8D3C7;
  --line-soft:#EDE9DE;
  --lime:#BDFF2F;
  --lime-deep:#A9EF1C;
  --clay:#E2542C;
  --radius-card:16px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(15,20,18,.06);
  --shadow-2:0 12px 32px -12px rgba(15,20,18,.16);
  --dur:180ms;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-style:none}
a{color:var(--text);text-decoration:none}
p{margin:0}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.3}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
::selection{background:var(--lime);color:var(--ink)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.container-narrow{max-width:760px;margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,241,234,.95);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(15,20,18,.04)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em}
.brand-mark{
  width:14px;height:14px;border-radius:3px;background:var(--lime);
  box-shadow:inset -5px 0 0 0 var(--ink);
  transform:rotate(-8deg);
  transition:transform var(--dur) ease;
}
.brand:hover .brand-mark{transform:rotate(8deg)}
.brand-text{font-size:18px;color:var(--ink)}
.nav-links{display:none;align-items:center;gap:32px}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;letter-spacing:.02em;color:var(--muted);
  transition:color var(--dur) ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  width:42px;height:42px;padding:0;background:transparent;
  border:1px solid var(--line);border-radius:var(--radius-pill);cursor:pointer;
  transition:border-color var(--dur) ease;
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform var(--dur) ease,opacity var(--dur) ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:1px solid transparent;border-radius:var(--radius-pill);
  font-size:16px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  transition:transform var(--dur) ease,background-color var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--lime);color:var(--ink)}
.btn-primary:hover{background:var(--lime-deep);box-shadow:0 10px 24px -14px rgba(15,20,18,.5)}
.btn-dark{background:var(--ink);color:var(--lime)}
.btn-dark:hover{background:var(--ink-soft)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--ink)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:2px solid var(--lime);padding-bottom:2px;
  transition:color var(--dur) ease,gap var(--dur) ease;
}
.btn-text:hover{gap:10px}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--radius-pill);font-size:13px;line-height:1;
  background:var(--line-soft);color:var(--muted);white-space:nowrap;
}
.tag-accent{background:var(--clay);color:#fff;font-weight:600}
.tag-dark{background:var(--ink);color:var(--lime)}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:8px 0 44px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.7) 0%,rgba(244,241,234,0) 100%);
}
.article-hero::after{
  content:"";position:absolute;right:-70px;top:-90px;width:340px;height:340px;
  background-image:repeating-linear-gradient(-45deg,rgba(15,20,18,.05) 0 1px,transparent 1px 9px);
  pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);padding:16px 0 22px;
}
.breadcrumb a{color:var(--muted);transition:color var(--dur) ease}
.breadcrumb a:hover{color:var(--text)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .crumb-mid{color:var(--muted)}
.breadcrumb .is-current{
  color:var(--text);max-width:320px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:var(--muted)}
.article-meta .meta-dot{width:5px;height:5px;border-radius:50%;background:var(--line)}
.article-meta .num{font-variant-numeric:tabular-nums}
.article-title{
  margin-top:18px;max-width:900px;
  font-size:clamp(26px,3.6vw,42px);font-weight:900;line-height:1.26;letter-spacing:-.02em;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}

/* ---------- 正文 ---------- */
.article-main{padding:56px 0 0}
.article-body{
  max-width:760px;margin:0 auto;
  font-size:16px;line-height:1.9;color:var(--text);
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;margin:2.2em 0 .75em;padding-left:16px;
  font-size:clamp(21px,2.4vw,28px);font-weight:800;line-height:1.35;letter-spacing:-.02em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:4px;border-radius:2px;background:var(--lime);
}
.article-body h3{
  position:relative;margin:1.7em 0 .6em;padding-left:14px;
  font-size:20px;font-weight:700;line-height:1.45;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;border-radius:50%;background:var(--clay);
}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--clay)}
.article-body blockquote{
  margin:1.6em 0;padding:10px 0 10px 20px;
  border-left:3px solid var(--clay);
  background:rgba(226,84,44,.05);
  color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:1.4em 0;width:100%;border:1px solid var(--line)}
.article-body figure{margin:1.6em 0}
.article-body figcaption,.article-body .caption{
  margin-top:8px;font-size:13px;color:var(--muted);text-align:center;
}
.article-body pre{
  margin:1.4em 0;padding:16px;overflow:auto;
  background:#EFEBE0;border:1px solid var(--line);border-radius:8px;
  font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px}
.article-body a{color:var(--ink);border-bottom:2px solid var(--lime);transition:background-color var(--dur) ease}
.article-body a:hover{background:rgba(189,255,47,.35)}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{font-weight:700;background:rgba(255,255,255,.6)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- 文末信息 ---------- */
.article-foot{
  max-width:760px;margin:56px auto 0;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;align-items:center;
}
.author{display:flex;align-items:center;gap:12px}
.author-avatar{
  width:42px;height:42px;border-radius:50%;background:var(--ink);color:var(--lime);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
}
.author-name{font-size:15px;font-weight:600}
.author-role{font-size:13px;color:var(--muted)}
.foot-note{font-size:14px;color:var(--muted)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.tag-row .tag:hover{background:var(--ink);color:var(--lime);transition:background-color var(--dur) ease,color var(--dur) ease}

/* ---------- 空态 ---------- */
.article-empty{
  padding:40px 32px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  text-align:center;
}
.article-empty h2{font-size:22px;font-weight:800;margin-bottom:12px}
.article-empty p{color:var(--muted);margin-bottom:24px}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0 88px}
.section-bg{background:#FBF9F4;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;
  margin-bottom:40px;
}
.section-head h2{font-size:clamp(24px,2.8vw,32px);font-weight:900;letter-spacing:-.02em}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.12em;
  color:var(--muted);text-transform:uppercase;margin-bottom:10px;
}
.section-head .eyebrow::before{content:"";width:18px;height:2px;background:var(--lime);border-radius:2px}

/* ---------- 卡片 ---------- */
.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--dur) ease,box-shadow var(--dur) ease,border-color var(--dur) ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--lime)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#E8E4D8}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:20px;font-weight:700;line-height:1.45}
.card-body .excerpt{
  font-size:15px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.card-meta .num{font-variant-numeric:tabular-nums}
.card-link{margin-top:auto;padding-top:6px}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;cursor:pointer;list-style:none;
  font-size:18px;font-weight:600;letter-spacing:-.01em;transition:color var(--dur) ease;
}
.faq-item summary:hover{color:var(--ink-soft)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-sign{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--ink);transition:transform var(--dur) ease,opacity var(--dur) ease}
.faq-sign::before{left:0;right:0;top:7.25px;height:1.5px}
.faq-sign::after{top:0;bottom:0;left:7.25px;width:1.5px}
.faq-item[open] .faq-sign::after{transform:scaleY(0)}
.faq-answer{padding:0 0 22px;max-width:700px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);color:#C9CFC9;
  padding:76px 0;
}
.cta-band::before{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;
  border:1px solid rgba(189,255,47,.22);border-radius:50%;
}
.cta-band::after{
  content:"";position:absolute;left:-60px;bottom:-120px;width:240px;height:240px;
  border:1px solid rgba(255,255,255,.08);border-radius:50%;
}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,32px);font-weight:900;letter-spacing:-.02em;max-width:520px}
.cta-inner p{margin-top:10px;font-size:15px;color:#9AA29B;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.cta-band .btn-text{color:var(--lime);border-bottom-color:rgba(189,255,47,.5)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C9CFC9;padding:72px 0 0}
.site-footer .brand-text{color:#fff}
.footer-grid{gap:0}
.footer-brand p{font-size:14px;line-height:1.85;color:#9AA29B;max-width:320px;margin-top:18px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#C9CFC9;padding:6px 0;transition:color var(--dur) ease,padding-left var(--dur) ease}
.footer-col a:hover{color:var(--lime);padding-left:4px}
.footer-col p{font-size:14px;color:#9AA29B;padding:4px 0}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.10);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:#8A918B;
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .nav-links{display:flex}
  .nav-toggle{display:none}
  .footer-col{border-left:1px solid rgba(255,255,255,.10);padding-left:24px}
  .footer-brand{border-left:0}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    display:none;flex-direction:column;align-items:flex-start;gap:0;
    padding:28px 24px 40px;background:var(--paper);overflow-y:auto;
    border-top:1px solid var(--line);
  }
  .nav-links.is-open{display:flex}
  .nav-links .nav-link{
    width:100%;font-size:20px;line-height:1.6;color:var(--ink);
    padding:14px 0;border-bottom:1px solid var(--line);
  }
  .nav-links .nav-link::after{display:none}
  .nav-links .nav-link.is-active{color:var(--clay)}
  .nav-actions .btn-sm{display:none}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .section,.section-tight{padding:56px 0}
  .article-main{padding:40px 0 0}
  .article-hero{padding-bottom:32px}
  .article-foot{flex-direction:column;align-items:flex-start;gap:16px}
  .cta-band{padding:56px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-bottom{margin-top:40px}
}
@media (max-width:519px){
  .article-title{font-size:24px}
  .card-body{padding:20px}
  .article-empty{padding:32px 20px}
}

/* roulang page: category2 */
:root{
  --lime:#BDFF2F;
  --lime-deep:#A8E81F;
  --clay:#E2542C;
  --ink:#0F1412;
  --sand:#F4F1EA;
  --card:#FFFFFF;
  --text:#1A1F1C;
  --muted:#5A615C;
  --line:#D8D3C7;
  --line-dark:rgba(255,255,255,.10);
  --radius-card:16px;
  --radius-img:12px;
  --radius-pill:999px;
  --radius-input:8px;
  --shadow-1:0 1px 2px rgba(15,20,18,.06);
  --shadow-2:0 12px 32px -12px rgba(15,20,18,.16);
  --sp-1:16px;
  --sp-2:24px;
  --sp-3:32px;
  --sp-4:48px;
  --section-y:104px;
  --t:180ms ease;
  --font:"Noto Sans SC","Inter","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Space Grotesk","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
p{margin:0 0 1.2em;color:var(--text);}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-0.015em;line-height:1.28;}
h1{font-weight:900;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--section-y) 0;}
.section-tight{padding:72px 0;}
.section-head{margin-bottom:48px;max-width:720px;}
.section-head h2{font-size:clamp(26px,3vw,34px);letter-spacing:-0.02em;}
.section-head .lead{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--muted);
  letter-spacing:.08em;margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:18px;height:2px;background:var(--clay);display:inline-block;border-radius:2px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform var(--t),background-color var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--lime-deep);transform:translateY(-1px);}
.btn-dark{background:var(--ink);color:var(--lime);}
.btn-dark:hover{background:#1A211E;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#EDEFEA;border-color:rgba(255,255,255,.28);}
.btn-outline-light:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-1px);}
.text-link{
  position:relative;display:inline-block;font-size:15px;font-weight:600;color:var(--ink);
  padding-bottom:2px;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--lime);
  transition:width var(--t);
}
.text-link:hover::after{width:100%;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,241,234,.94);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),background-color var(--t);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(244,241,234,.97);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:13px;height:13px;background:var(--lime);border-radius:3px;
  transform:rotate(45deg);flex:none;
}
.brand-text{font-size:19px;font-weight:900;letter-spacing:-0.02em;color:var(--ink);}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--muted);
  letter-spacing:.02em;padding:6px 0;transition:color var(--t);
}
.nav-link:hover{color:var(--ink);}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:3px;background:var(--lime);
  border-radius:3px;transition:width var(--t);
}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;background:transparent;border:1px solid var(--line);
  border-radius:12px;cursor:pointer;padding:0 10px;
}
.nav-toggle span{display:block;height:1.6px;background:var(--ink);border-radius:2px;transition:transform var(--t),opacity var(--t);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}

/* ---------- 面包屑 ---------- */
.crumbs{padding:20px 0 4px;font-size:14px;color:var(--muted);}
.crumbs a{color:var(--muted);transition:color var(--t);}
.crumbs a:hover{color:var(--ink);}
.crumbs span.sep{margin:0 8px;color:var(--line);}
.crumbs .current{color:var(--ink);font-weight:600;}

/* ---------- Hero（浅砂底 + 左文右图） ---------- */
.hero-lite{
  position:relative;overflow:hidden;
  padding:64px 0 88px;
  background:
    repeating-linear-gradient(135deg,rgba(15,20,18,.038) 0 1px,transparent 1px 13px),
    var(--sand);
  border-bottom:1px solid var(--line);
}
.hero-lite .hero-grid{display:flex;align-items:center;gap:56px;}
.hero-copy{flex:1 1 52%;max-width:560px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;
  border-radius:var(--radius-pill);background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--muted);margin-bottom:22px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--clay);display:block;}
.hero-lite h1{
  font-size:clamp(30px,3.9vw,48px);
  letter-spacing:-0.02em;line-height:1.2;
}
.hero-lite h1 em{font-style:normal;display:block;color:var(--clay);font-size:.62em;font-weight:700;margin-top:10px;letter-spacing:0;}
.hero-sub{margin-top:18px;font-size:17px;color:var(--muted);line-height:1.8;max-width:460px;}
.hero-cta{display:flex;align-items:center;gap:22px;margin-top:32px;flex-wrap:wrap;}
.hero-metrics{display:flex;gap:34px;margin-top:38px;flex-wrap:wrap;}
.hero-metrics .m-num{
  font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:-0.02em;line-height:1.1;
}
.hero-metrics .m-num b{color:var(--clay);font-weight:700;}
.hero-metrics .m-txt{font-size:13px;color:var(--muted);margin-top:6px;}
.hero-figure{flex:1 1 44%;}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--line);box-shadow:var(--shadow-1);
}

/* ---------- 三段式介绍 ---------- */
.trio{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0;}
.trio-grid{display:flex;gap:0;}
.trio-item{flex:1;padding:0 32px;border-left:1px solid var(--line);}
.trio-item:first-child{border-left:0;padding-left:0;}
.trio-item:last-child{padding-right:0;}
.trio-item h3{font-size:20px;margin-bottom:12px;}
.trio-item p{font-size:15px;color:var(--muted);line-height:1.85;margin:0;}
.trio-item .idx{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--clay);
  letter-spacing:.1em;display:block;margin-bottom:12px;
}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr));}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--lime);}
.card-thumb{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);
  margin-bottom:20px;border:1px solid var(--line);
}
.card-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap;}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:25px;padding:0 11px;
  border-radius:var(--radius-pill);background:var(--sand);color:var(--muted);
  font-size:12.5px;font-weight:500;border:1px solid var(--line);
}
.chip i{width:5px;height:5px;border-radius:50%;background:var(--clay);display:block;}
.time-num{
  font-family:var(--font-num);font-size:13px;color:var(--muted);
  font-variant-numeric:tabular-nums;letter-spacing:.01em;
}
.card h3{font-size:20px;margin-bottom:10px;line-height:1.4;}
.card p{font-size:15px;color:var(--muted);line-height:1.8;margin:0 0 20px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .card-foot{margin-top:auto;}

/* ---------- 时间轴 / 步骤条 ---------- */
.steps-wrap{position:relative;margin-top:8px;}
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;position:relative;}
.steps::before{
  content:"";position:absolute;left:5%;right:5%;top:9px;height:1px;background:var(--line);
}
.step{position:relative;padding-right:20px;}
.step .dot{
  position:relative;z-index:1;width:19px;height:19px;border-radius:50%;
  background:var(--sand);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
}
.step .dot::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);}
.step:first-child .dot::after{background:var(--clay);}
.step-num{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--muted);
  letter-spacing:.1em;margin:18px 0 8px;display:block;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--muted);line-height:1.8;margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;}
.accordion{border:0;background:transparent;margin:0;}
.accordion .accordion-item{border:0;border-top:1px solid var(--line);}
.accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion .accordion-title{
  border:0;background:transparent;padding:20px 44px 20px 0;
  font-size:18px;font-weight:600;color:var(--ink);line-height:1.6;position:relative;
}
.accordion .accordion-title:hover{color:var(--ink);}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:6px;left:auto;top:50%;transform:translateY(-50%);
  font-family:var(--font-num);font-size:22px;font-weight:400;color:var(--muted);
  margin:0;transition:color var(--t);
}
.accordion .accordion-item.is-active .accordion-title::before{content:"−";color:var(--clay);}
.accordion .accordion-content{
  border:0;background:transparent;padding:0 60px 22px 0;
  font-size:15px;color:var(--muted);line-height:1.9;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);border-radius:0;
  padding:78px 0;
}
.cta-band::before{
  content:"";position:absolute;right:-180px;top:-260px;width:540px;height:540px;
  border:1px solid rgba(189,255,47,.16);border-radius:50%;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-140px;width:320px;height:320px;
  border:1px solid rgba(189,255,47,.10);border-radius:50%;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-inner h2{color:#F2F4F0;font-size:clamp(24px,2.8vw,32px);letter-spacing:-0.02em;line-height:1.35;}
.cta-inner .cta-note{color:#9AA39C;font-size:14.5px;margin-top:12px;}
.cta-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;}
.cta-actions .text-link{color:#EDEFEA;}
.cta-actions .text-link::after{background:var(--lime);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C9CFC9;padding:72px 0 28px;margin-top:0;}
.site-footer .brand-text{color:#F2F4F0;}
.footer-grid{padding-bottom:44px;}
.footer-brand p{font-size:14.5px;color:#9AA39C;line-height:1.85;margin-top:18px;max-width:340px;}
.footer-col{padding-left:32px;border-left:1px solid var(--line-dark);}
.footer-brand{border-left:0;padding-left:0;}
.footer-col h4{font-size:14px;font-weight:700;color:#F2F4F0;letter-spacing:.06em;margin-bottom:18px;}
.footer-col a{display:block;font-size:14.5px;color:#C9CFC9;padding:6px 0;transition:color var(--t);}
.footer-col a:hover{color:var(--lime);}
.footer-col p{font-size:14.5px;color:#9AA39C;margin:0 0 8px;}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding-top:22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#828A84;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  :root{--section-y:72px;}
  .nav-links{
    position:fixed;left:0;right:0;top:74px;bottom:0;
    background:var(--sand);flex-direction:column;align-items:flex-start;
    gap:0;padding:28px 24px 48px;
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:opacity var(--t),transform var(--t);
    border-top:1px solid var(--line);overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-link{font-size:20px;line-height:1.6;width:100%;padding:14px 0;border-bottom:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--ink);}
  .nav-toggle{display:flex;}
  .hero-lite{padding:48px 0 64px;}
  .hero-lite .hero-grid{flex-direction:column;gap:36px;align-items:flex-start;}
  .hero-figure{width:100%;}
  .trio-grid{flex-direction:column;gap:32px;}
  .trio-item{border-left:0;padding:0;border-top:1px solid var(--line);padding-top:28px;}
  .trio-item:first-child{border-top:0;padding-top:0;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px;}
  .steps::before{display:none;}
  .footer-col{padding-left:24px;}
}
@media screen and (max-width:639px){
  :root{--section-y:56px;}
  .container{padding:0 20px;}
  .card-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:28px;}
  .hero-metrics{gap:24px;}
  .hero-metrics .m-num{font-size:22px;}
  .section-head{margin-bottom:32px;}
  .footer-col{padding-left:0;border-left:0;margin-top:28px;}
  .footer-brand{margin-top:0;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:58px 0;}
  .accordion .accordion-title{font-size:16.5px;padding-right:36px;}
  .accordion .accordion-content{padding-right:16px;}
}

/* roulang page: category1 */
:root{
  --lime:#BDFF2F;
  --lime-soft:#D6FF7A;
  --clay:#E2542C;
  --ink:#0F1412;
  --sand:#F4F1EA;
  --card:#FFFFFF;
  --text:#1A1F1C;
  --muted:#5A615C;
  --line:#D8D3C7;
  --line-dark:rgba(201,207,201,.18);
  --r-card:16px;
  --r-img:12px;
  --r-pill:999px;
  --r-input:8px;
  --sh-1:0 1px 2px rgba(15,20,18,.06);
  --sh-2:0 12px 32px -12px rgba(15,20,18,.16);
  --sp-1:16px;
  --sp-2:24px;
  --sp-3:32px;
  --sp-4:48px;
  --sec:110px;
  --sec-m:60px;
  --t:180ms ease;
  --font-cn:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t);}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;padding:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}
::selection{background:var(--lime);color:var(--ink);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:var(--sp-4);}
.section-head h2{margin:0;}
h1{font-size:clamp(32px,4vw,52px);line-height:1.22;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:800;letter-spacing:-.015em;}
h3{font-size:20px;line-height:1.5;font-weight:700;letter-spacing:-.01em;}
h4{font-size:15px;font-weight:700;letter-spacing:.05em;}
p{font-size:16px;line-height:1.88;color:var(--text);}
.lead{font-size:21px;line-height:1.78;font-weight:500;color:var(--text);letter-spacing:-.01em;}
.muted{color:var(--muted);font-size:14px;line-height:1.8;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;transition:all var(--t);white-space:nowrap;
}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--lime-soft);transform:translateY(-1px);}
.btn-dark{background:var(--ink);color:var(--lime);}
.btn-dark:hover{transform:translateY(-1px);background:#1b2420;}
.btn-ghost{border-color:var(--line);color:var(--text);background:transparent;}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-1px);}
.btn-ghost-light{border-color:rgba(255,255,255,.28);color:#fff;background:transparent;}
.btn-ghost-light:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--text);
  border-bottom:1px solid var(--line);padding-bottom:3px;position:relative;
}
.btn-link::after{
  content:"";position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:var(--lime);transition:width var(--t);
}
.btn-link:hover::after{width:100%;}
.btn-link.on-dark{color:var(--lime);border-bottom-color:rgba(189,255,47,.4);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,241,234,.92);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),background-color var(--t);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(244,241,234,.97);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
.brand-mark{width:18px;height:18px;border-radius:5px;background:var(--ink);position:relative;flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;inset:4px;background:var(--lime);border-radius:2px;transform:skewX(-18deg);}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-link{
  position:relative;font-size:15px;letter-spacing:.06em;color:var(--text);
  padding:6px 0;transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-4px;height:3px;width:0;
  background:var(--lime);border-radius:2px;transition:width var(--t);
}
.nav-link:hover::after{width:100%;}
.nav-link.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:34px;height:34px;}
.nav-toggle span{display:block;height:1.5px;width:22px;background:var(--text);transition:transform var(--t),opacity var(--t);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* ---------- hero band ---------- */
.hero-band{
  position:relative;background:var(--ink);color:#fff;
  padding:70px 0 76px;overflow:hidden;min-height:300px;
}
.hero-band::before{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;
  border:1px solid rgba(189,255,47,.16);border-radius:50%;
}
.hero-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:74px;
  background-image:repeating-linear-gradient(135deg,rgba(189,255,47,.10) 0 1px,transparent 1px 9px);
  pointer-events:none;
}
.hero-band .hero-grid{position:relative;z-index:2;display:flex;align-items:flex-end;justify-content:space-between;gap:48px;}
.hero-band h1{color:#fff;max-width:620px;}
.hero-band .hero-aside{max-width:340px;text-align:right;}
.hero-band .hero-aside p{color:#C9CFC9;font-size:15px;line-height:1.8;margin-bottom:20px;}
.crumb{display:flex;align-items:center;gap:10px;font-size:14px;color:#8B948C;margin-bottom:26px;}
.crumb a:hover{color:var(--lime);}
.crumb span.sep{color:rgba(201,207,201,.4);}
.crumb .current{color:#C9CFC9;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  font-size:12px;letter-spacing:.16em;font-weight:700;color:var(--clay);
  text-transform:uppercase;
}
.eyebrow.on-dark{color:var(--lime);}

/* ---------- intro ---------- */
.intro-wrap{background:var(--sand);}
.eyebrow-line{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.eyebrow-line i{display:block;width:34px;height:2px;background:var(--clay);}
.eyebrow-line b{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--clay);}
.intro-lead{max-width:860px;margin-bottom:36px;}
.cols-2{column-gap:48px;}
@media (min-width:1024px){.cols-2{display:grid;grid-template-columns:1fr 1fr;}}
.cols-2 p{color:var(--muted);font-size:16px;line-height:1.9;margin-bottom:20px;}
.cols-2 p strong{color:var(--text);font-weight:700;}

/* ---------- list area ---------- */
.list-area{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.side-index{border-top:1px solid var(--line);padding-top:22px;}
.side-index h4{color:var(--muted);letter-spacing:.14em;margin-bottom:16px;font-size:12px;}
.side-index a{
  position:relative;display:block;padding:12px 0 12px 18px;
  font-size:15px;color:var(--muted);border-bottom:1px solid var(--line);
}
.side-index a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--line);transition:background-color var(--t);
}
.side-index a:hover{color:var(--text);}
.side-index a:hover::before{background:var(--lime);}
.side-index .side-note{margin-top:24px;font-size:13px;color:var(--muted);line-height:1.8;}

.entry-list{border-top:1px solid var(--line);}
.entry{
  display:flex;gap:26px;padding:30px 0 28px;border-bottom:1px solid var(--line);
  transition:transform var(--t);
}
.entry:hover{transform:translateY(-2px);}
.entry-media{flex:0 0 190px;width:190px;height:124px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);}
.entry-media img{width:100%;height:100%;object-fit:cover;}
.entry-body{flex:1 1 auto;min-width:0;}
.entry-meta{display:flex;align-items:center;gap:14px;margin-bottom:10px;flex-wrap:wrap;}
.entry-body h3{margin-bottom:8px;}
.entry-body h3 a:hover{color:var(--clay);}
.entry-body .sum{color:var(--muted);font-size:15px;line-height:1.85;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.entry-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:var(--sand);color:var(--muted);
}
.tag-dark{background:var(--ink);color:var(--lime);}
.tag-clay{background:rgba(226,84,44,.1);color:var(--clay);}
.time{font-family:var(--font-num);font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}

/* ---------- hint table ---------- */
.hint-section{background:var(--sand);}
.hint-row{
  display:grid;grid-template-columns:220px 1fr 240px;gap:28px;align-items:center;
  padding:22px 0;border-top:1px solid var(--line);
}
.hint-row:last-child{border-bottom:1px solid var(--line);}
.hint-row .hint-name{font-size:16px;font-weight:700;}
.hint-row .hint-mean{color:var(--muted);font-size:15px;line-height:1.8;}
.hint-row .hint-act{font-size:14px;color:var(--text);display:flex;align-items:center;gap:8px;}
.hint-row .hint-act::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--clay);flex:0 0 auto;}

/* ---------- faq ---------- */
.faq-section{background:#fff;border-top:1px solid var(--line);}
.accordion{border:none;background:transparent;margin:0;}
.accordion .accordion-item{border:none;border-top:1px solid var(--line);background:transparent;}
.accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion .accordion-title{
  position:relative;display:block;border:none;background:transparent;
  padding:22px 48px 22px 0;font-size:18px;font-weight:600;color:var(--text);line-height:1.5;
}
.accordion .accordion-title:hover{color:var(--clay);}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:10px;top:22px;margin:0;
  font-size:22px;font-weight:400;color:var(--clay);line-height:1;width:auto;height:auto;
}
.accordion .accordion-item.is-active .accordion-title::before{content:"−";}
.accordion .accordion-content{
  display:block;border:none;background:transparent;
  padding:0 60px 24px 0;color:var(--muted);font-size:15px;line-height:1.9;
}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;background:var(--ink);color:#fff;padding:76px 0;overflow:hidden;border-radius:0;
}
.cta-band::before{
  content:"";position:absolute;left:-90px;bottom:-160px;width:360px;height:360px;
  border:1px solid rgba(189,255,47,.16);border-radius:50%;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:56px;
  background-image:repeating-linear-gradient(135deg,rgba(189,255,47,.08) 0 1px,transparent 1px 9px);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;max-width:480px;letter-spacing:-.01em;}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#C9CFC9;padding:72px 0 0;}
.site-footer .brand{color:#fff;margin-bottom:18px;}
.site-footer .brand-mark{background:#fff;}
.site-footer .brand-mark::after{background:var(--ink);}
.footer-grid{padding-bottom:48px;}
.footer-brand p{font-size:14px;line-height:1.9;color:#8F978F;max-width:340px;}
.footer-col h4{color:#fff;margin-bottom:18px;font-size:13px;letter-spacing:.14em;}
.footer-col a{display:block;font-size:14px;color:#C9CFC9;padding:7px 0;transition:color var(--t);}
.footer-col a:hover{color:var(--lime);}
.footer-col p{font-size:14px;color:#8F978F;line-height:1.9;margin-bottom:6px;}
@media (min-width:1024px){
  .footer-grid > div + div{border-left:1px solid var(--line-dark);padding-left:32px;}
}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8F978F;
}
.footer-bottom .num{color:#8F978F;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sec:80px;}
  .hero-band .hero-grid{flex-direction:column;align-items:flex-start;gap:26px;}
  .hero-band .hero-aside{text-align:left;max-width:520px;}
  .hint-row{grid-template-columns:1fr;gap:10px;padding:20px 0;}
  .entry-media{flex:0 0 160px;width:160px;height:110px;}
  .nav-links{gap:24px;}
}
@media (max-width:767px){
  :root{--sec:66px;}
  .container{padding:0 20px;}
  .nav-links{
    position:fixed;inset:74px 0 0 0;background:var(--sand);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:32px 20px;transform:translateY(-8px);opacity:0;visibility:hidden;
    transition:opacity var(--t),transform var(--t),visibility var(--t);
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-links .nav-link{font-size:20px;line-height:1.6;padding:14px 0;width:100%;border-bottom:1px solid var(--line);}
  .nav-links .nav-link::after{display:none;}
  .nav-links .nav-link.is-active{color:var(--clay);}
  .nav-toggle{display:flex;}
  .nav-actions .btn{display:none;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .entry{flex-direction:column;gap:16px;}
  .entry-media{width:100%;height:180px;flex:none;}
  .accordion .accordion-content{padding-right:12px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid > div{margin-bottom:32px;}
  .footer-grid > div:last-child{margin-bottom:0;}
}
@media (max-width:420px){
  h1{font-size:28px;}
  .lead{font-size:18px;}
  .entry-media{height:150px;}
}