/* roulang page: index */
:root{
  --ink:#14120F;
  --ink-2:#3A3630;
  --muted:#7A736A;
  --line:#E3DED4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --accent:#5B2BE0;
  --accent-2:#CBFF4D;
  --ok:#1F8A5B;
  --warn:#C2410C;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --sh-1:0 1px 2px rgba(20,18,15,.05),0 10px 28px -14px rgba(20,18,15,.14);
  --sh-2:0 18px 48px -20px rgba(20,18,15,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:74px;
}
*,*::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:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--accent);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:4px;}
::selection{background:var(--accent-2);color:var(--ink);}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.section{padding:110px 0;}
.section--tight{padding:78px 0;}
.section--dark{background:var(--ink);color:#F2EFE9;}
.section--dark .eyebrow{color:var(--accent-2);}
.section--dark .section-lead{color:rgba(242,239,233,.72);}
.section--alt{background:var(--surface-2);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.09em;
  color:var(--accent);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-2);display:block;}
.section-head{max-width:760px;margin-bottom:56px;}
.section-title{
  font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.22;
  letter-spacing:-.02em;margin:16px 0 18px;
}
.section-lead{color:var(--muted);font-size:17px;line-height:1.85;max-width:660px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:120;
  background:rgba(247,245,240,.55);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(20,18,15,.08);
  transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-stuck{
  background:#FFFFFF;
  border-bottom-color:rgba(20,18,15,.14);
  box-shadow:0 8px 26px -18px rgba(20,18,15,.42);
}
.nav{display:flex;align-items:center;gap:28px;height:var(--nav-h);}
.brand{display:flex;flex-direction:column;line-height:1.15;margin-right:auto;}
.brand-main{font-size:18px;font-weight:800;letter-spacing:-.01em;}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.08em;margin-top:4px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:600;padding:9px 14px;border-radius:999px;
  color:var(--ink-2);transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--accent-2);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--ink);background:rgba(20,18,15,.04);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--accent);}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.search-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;border:1px solid rgba(20,18,15,.16);
  font-size:14px;color:var(--ink-2);transition:border-color .22s var(--ease),color .22s var(--ease);
}
.search-btn:hover{border-color:var(--accent);color:var(--accent);}
.btn{
  display:inline-flex;align-items:center;gap:10px;justify-content:center;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 26px -14px rgba(91,43,224,.85);}
.btn-primary:hover{background:#4a1ec9;color:#fff;transform:translateY(-1px);}
.btn-primary .arrow{transition:transform .22s var(--ease);}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-ghost{border:1px solid rgba(20,18,15,.28);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-line{border-bottom:1px solid rgba(20,18,15,.35);border-radius:0;padding:10px 2px;background:none;}
.btn-line:hover{color:var(--accent);border-color:var(--accent);}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid rgba(20,18,15,.16);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger span{width:18px;height:2px;background:var(--ink);display:block;border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{
  display:none;position:fixed;top:var(--nav-h);left:0;right:0;z-index:118;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 24px 40px -28px rgba(20,18,15,.5);
  padding:14px 20px 26px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;padding:14px 6px;font-size:16px;font-weight:600;
  border-bottom:1px solid var(--line);
}
.mobile-panel a:last-of-type{border-bottom:0;}
.mobile-panel .btn{width:100%;margin-top:16px;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:calc(var(--nav-h) + 82px) 0 96px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:#F7F5F0;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(15,13,11,.86) 0%,rgba(15,13,11,.68) 52%,rgba(15,13,11,.5) 100%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:190px;
  background:linear-gradient(to bottom,rgba(15,13,11,0) 0%,var(--bg) 100%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px;border-radius:999px;
  border:1px solid rgba(203,255,77,.45);
  background:rgba(203,255,77,.1);
  font-size:13px;font-weight:600;letter-spacing:.05em;color:var(--accent-2);
}
.hero h1{
  font-size:clamp(38px,5.6vw,72px);
  font-weight:800;line-height:1.06;letter-spacing:-.025em;
  margin:26px 0 22px;
}
.hero h1 em{font-style:normal;color:var(--accent-2);}
.hero-sub{font-size:18px;line-height:1.85;color:rgba(247,245,240,.82);max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}
.hero-cta .btn-ghost{border-color:rgba(247,245,240,.42);color:#F7F5F0;}
.hero-cta .btn-ghost:hover{background:#F7F5F0;color:var(--ink);border-color:#F7F5F0;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:40px;margin-top:48px;padding-top:26px;
  border-top:1px solid rgba(247,245,240,.18);
}
.fact-num{font-size:26px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;}
.fact-label{font-size:13px;color:rgba(247,245,240,.66);margin-top:4px;letter-spacing:.04em;}
.hero-cover{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:0 34px 70px -30px rgba(0,0,0,.72);
  transform:rotate(-1.2deg);
  border:1px solid rgba(247,245,240,.16);
}
.hero-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-cover figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 22px 18px;
  background:linear-gradient(to top,rgba(15,13,11,.78),rgba(15,13,11,0));
  font-size:13.5px;color:rgba(247,245,240,.9);letter-spacing:.03em;
}

/* ---------- story ---------- */
.story-grid{display:grid;grid-template-columns:200px 1fr;gap:56px;align-items:start;}
.story-side{border-top:1px solid var(--line);padding-top:20px;}
.story-side strong{display:block;font-size:15px;font-weight:700;letter-spacing:.02em;}
.story-side span{font-size:13px;color:var(--muted);}
.story-body p{font-size:17.5px;line-height:1.9;color:var(--ink-2);margin-bottom:18px;}
.story-body p:last-of-type{margin-bottom:0;}
.story-figure{margin-top:38px;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.story-figure img{width:100%;aspect-ratio:16/7;object-fit:cover;}
.story-points{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:44px;}
.story-point{border-top:1px solid var(--line);padding-top:18px;}
.story-point h3{font-size:17px;font-weight:650;margin-bottom:8px;}
.story-point p{font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(91,43,224,.28);}
.card-media{overflow:hidden;background:var(--surface-2);}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .42s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1;}
.chip{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--accent-2);color:#2A2A08;
  font-size:12px;font-weight:600;letter-spacing:.05em;
}
.chip--outline{background:transparent;border:1px solid var(--line);color:var(--muted);}
.card-title{font-size:20px;font-weight:650;line-height:1.45;margin:16px 0 10px;letter-spacing:-.01em;}
.card--lead .card-title{font-size:26px;}
.card-text{font-size:15px;color:var(--muted);line-height:1.8;flex:1;}
.card-foot{
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.card-foot .go{color:var(--accent);font-weight:600;}
.card:hover .card-title{color:var(--accent);}

/* ---------- news list ---------- */
.news-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;align-items:start;}
.news-list{display:flex;flex-direction:column;}
.news-item{
  position:relative;display:block;padding:26px 0 26px 22px;
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),padding-left .22s var(--ease);
}
.news-item::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;
  background:var(--accent);transform:scaleY(0);transform-origin:top;
  transition:transform .22s var(--ease);
}
.news-item:hover{padding-left:30px;}
.news-item:hover::before{transform:scaleY(1);}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
.news-title{font-size:20px;font-weight:650;line-height:1.5;margin:12px 0 8px;letter-spacing:-.01em;}
.news-item:hover .news-title{color:var(--accent);}
.news-desc{
  font-size:15px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{display:inline-block;margin-top:12px;font-size:13.5px;font-weight:600;color:var(--accent);}
.news-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);position:sticky;top:calc(var(--nav-h) + 24px);
}
.news-side h3{font-size:15px;font-weight:700;margin-bottom:16px;}
.news-side ul li{border-bottom:1px dashed var(--line);}
.news-side ul li:last-child{border-bottom:0;}
.news-side ul a{display:block;padding:11px 0;font-size:14.5px;color:var(--ink-2);}
.news-side ul a:hover{color:var(--accent);padding-left:6px;}
.empty{
  padding:56px 24px;text-align:center;color:var(--muted);font-size:15px;
  border:1px dashed var(--line);border-radius:var(--r-md);background:var(--surface);
}

/* ---------- numbers ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.metric{border-top:2px solid var(--accent-2);padding-top:20px;}
.metric b{display:block;font-size:clamp(34px,4vw,52px);font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1;}
.metric span{display:block;margin-top:12px;font-size:14.5px;color:rgba(242,239,233,.7);line-height:1.75;}
.timeline{margin-top:64px;border-top:1px solid rgba(242,239,233,.16);padding-top:36px;}
.timeline-item{display:grid;grid-template-columns:120px 1fr;gap:26px;padding:18px 0;}
.timeline-item .t-date{font-size:13.5px;color:var(--accent-2);letter-spacing:.06em;font-variant-numeric:tabular-nums;}
.timeline-item .t-text{font-size:15.5px;color:rgba(242,239,233,.82);line-height:1.8;}

/* ---------- faq ---------- */
.faq-list{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;text-align:left;font-size:18px;font-weight:650;color:var(--ink);
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);position:relative;
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transition:opacity .22s var(--ease),background .22s var(--ease);
}
.faq-icon::before{width:11px;height:1.6px;transform:translate(-50%,-50%);}
.faq-icon::after{width:1.6px;height:11px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--accent);border-color:var(--accent);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{max-width:760px;padding:0 0 24px;font-size:16px;line-height:1.85;color:var(--muted);display:none;}
.faq-item.is-open .faq-a{display:block;}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  color:#F7F5F0;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(15,13,11,.88);}
.cta-band .container{position:relative;z-index:2;}
.cta-grid{display:grid;grid-template-columns:1fr 460px;gap:64px;align-items:center;}
.cta-card{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(247,245,240,.18);
  border-radius:var(--r-lg);
  padding:32px;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.cta-card h3{font-size:20px;font-weight:700;margin-bottom:8px;}
.cta-card p{font-size:14.5px;color:rgba(247,245,240,.7);margin-bottom:22px;}
.sub-form{display:flex;gap:12px;flex-wrap:wrap;}
.sub-form input{
  flex:1 1 200px;min-width:0;padding:14px 18px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.08);border:1px solid rgba(247,245,240,.24);
  color:#fff;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.sub-form input::placeholder{color:rgba(247,245,240,.5);}
.sub-form input:focus{outline:none;border-color:var(--accent-2);box-shadow:0 0 0 4px rgba(203,255,77,.18);}
.form-tip{font-size:13px;color:rgba(247,245,240,.6);margin-top:14px;}
.form-msg{margin-top:14px;font-size:14px;display:none;}
.form-msg.ok{display:block;color:var(--accent-2);}
.form-msg.err{display:block;color:#FF9A6B;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(242,239,233,.78);padding:78px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;}
.footer-brand .fb-name{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.01em;}
.footer-brand p{margin-top:14px;font-size:14.5px;line-height:1.85;color:rgba(242,239,233,.62);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:18px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14.5px;color:rgba(242,239,233,.72);}
.footer-col a:hover{color:var(--accent-2);}
.footer-note{font-size:13px;color:rgba(242,239,233,.5);line-height:1.8;}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(242,239,233,.14);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:rgba(242,239,233,.5);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .card-grid{grid-template-columns:1fr 1fr;}
  .card--lead{grid-column:1 / -1;}
  .news-layout{grid-template-columns:1fr;}
  .news-side{position:static;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .hero-grid{grid-template-columns:1fr;gap:48px;}
  .hero-cover{transform:none;}
}
@media (max-width:960px){
  .nav-links,.search-btn{display:none;}
  .burger{display:flex;}
  .container{padding:0 28px;}
  .section{padding:78px 0;}
  .story-grid{grid-template-columns:1fr;gap:30px;}
  .story-points{grid-template-columns:1fr;}
}
@media (max-width:700px){
  body{font-size:16.5px;}
  .container{padding:0 20px;}
  .section{padding:58px 0;}
  .card-grid{grid-template-columns:1fr;}
  .metric-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .hero{padding:calc(var(--nav-h) + 54px) 0 68px;}
  .hero-facts{gap:26px;}
  .fact-num{font-size:22px;}
  .news-title{font-size:18px;}
  .news-item{padding:22px 0 22px 16px;}
  .news-item:hover{padding-left:20px;}
  .timeline-item{grid-template-columns:1fr;gap:6px;}
  .faq-q{font-size:16.5px;}
  .brand-sub{display:none;}
}

/* roulang page: article */
:root{
  --ink:#14120F;
  --ink-2:#3A3630;
  --muted:#7A736A;
  --line:#E3DED4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --accent:#5B2BE0;
  --accent-2:#CBFF4D;
  --ok:#1F8A5B;
  --warn:#C2410C;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --sh-1:0 1px 2px rgba(20,18,15,.05), 0 10px 28px -14px rgba(20,18,15,.14);
  --sh-2:0 18px 48px -20px rgba(20,18,15,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color 160ms var(--ease)}
a:hover{color:var(--accent)}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:4px}
.container{max-width:1240px;margin:0 auto;padding:0 40px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(247,245,240,.55);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(20,18,15,.08);
  box-shadow:0 1px 0 rgba(20,18,15,.03);
  transition:background 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.site-header.is-solid{
  background:var(--bg);
  border-bottom-color:rgba(20,18,15,.14);
  box-shadow:0 12px 30px -22px rgba(20,18,15,.45);
}
.nav{display:flex;align-items:center;gap:28px;height:76px}
.brand{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0}
.brand-main{font-size:19px;font-weight:800;letter-spacing:-.02em}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--muted);font-weight:600;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav-links a{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-2);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--accent-2);transition:right 220ms var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.is-active::after{right:0}
.nav-links a.is-active{color:var(--ink)}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search-btn{
  font-size:14px;font-weight:600;color:var(--ink-2);
  padding:9px 14px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.6);
  transition:border-color 160ms var(--ease),color 160ms var(--ease),background 160ms var(--ease);
}
.search-btn:hover{border-color:var(--ink);color:var(--ink);background:#fff}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform 160ms var(--ease),background 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease),box-shadow 220ms var(--ease),filter 160ms var(--ease);
}
.btn .arrow{transition:transform 220ms var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{filter:brightness(1.08);color:#fff;box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-outline{background:transparent;border-color:rgba(20,18,15,.28);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.nav-actions .btn-primary{padding:12px 20px;font-size:14px}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:rgba(255,255,255,.7);cursor:pointer;padding:0;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);transition:transform 220ms var(--ease),opacity 220ms var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;color:#fff;overflow:hidden;
  padding:150px 0 84px;
  background-color:var(--ink);
  background-image:linear-gradient(180deg,rgba(20,18,15,.78) 0%,rgba(20,18,15,.86) 55%,rgba(20,18,15,.94) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.article-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:120px;
  background:linear-gradient(180deg,rgba(247,245,240,0) 0%,rgba(247,245,240,.92) 100%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.68)}
.crumb a{color:rgba(255,255,255,.68)}
.crumb a:hover{color:var(--accent-2)}
.crumb .sep{opacity:.5}
.crumb .current{color:#fff;font-weight:700}
.art-tag{
  display:inline-flex;align-items:center;gap:6px;margin-top:26px;
  background:var(--accent-2);color:var(--ink);
  font-size:12px;font-weight:700;letter-spacing:.08em;
  padding:6px 12px;border-radius:999px;
}
.art-title{
  max-width:900px;margin:20px 0 0;
  font-size:clamp(30px,4.2vw,54px);font-weight:800;line-height:1.15;letter-spacing:-.02em;
}
.art-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;
  font-size:13.5px;color:rgba(255,255,255,.72);
  padding-top:22px;border-top:1px solid rgba(255,255,255,.16);
  max-width:900px;
}
.art-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.art-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-2);display:inline-block}
.art-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  padding:7px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.28);color:rgba(255,255,255,.88);
  transition:background 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease);
}
.tag:hover{background:rgba(203,255,77,.16);border-color:var(--accent-2);color:#fff}

/* ---------- layout ---------- */
.article-body{padding:76px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:64px;align-items:start}
.article-main{max-width:800px}

/* ---------- prose ---------- */
.prose{font-size:17.5px;line-height:1.9;color:var(--ink-2)}
.prose > * + *{margin-top:20px}
.prose h2{
  position:relative;margin:48px 0 0;padding-left:16px;
  font-size:clamp(23px,2.4vw,30px);font-weight:700;color:var(--ink);line-height:1.35;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--accent);
}
.prose h3{margin:36px 0 0;font-size:22px;font-weight:700;color:var(--ink)}
.prose h4{margin:28px 0 0;font-size:18px;font-weight:700;color:var(--ink)}
.prose p{color:var(--ink-2)}
.prose strong{color:var(--ink);font-weight:700}
.prose a{color:var(--accent);border-bottom:1px solid rgba(91,43,224,.28)}
.prose a:hover{border-bottom-color:var(--accent)}
.prose ul,.prose ol{margin-top:18px;padding-left:0}
.prose li{position:relative;padding-left:24px;margin-top:10px;line-height:1.85}
.prose ul > li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--accent-2);box-shadow:0 0 0 1px rgba(20,18,15,.12);
}
.prose ol{counter-reset:li}
.prose ol > li{counter-increment:li}
.prose ol > li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.02em;
}
.prose blockquote{
  margin:30px 0 0;padding:20px 24px;
  background:var(--surface-2);border-left:4px solid var(--accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-2);font-size:17px;
}
.prose blockquote p + p{margin-top:12px}
.prose img{border-radius:var(--r-md);margin-top:8px}
.prose figure{margin:30px 0 0}
.prose figcaption{margin-top:10px;font-size:13px;color:var(--muted)}
.prose table{
  width:100%;border-collapse:collapse;margin-top:26px;font-size:15.5px;
  border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
}
.prose thead th{background:var(--surface-2);color:var(--ink);font-weight:700;text-align:left}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--line)}
.prose tbody tr:nth-child(even){background:#FBF9F5}
.prose tbody tr:last-child td{border-bottom:none}
.prose hr{margin:40px 0 0;border:none;border-top:1px solid var(--line)}

/* ---------- empty ---------- */
.empty-state{
  max-width:640px;margin:0 auto;text-align:center;
  padding:64px 32px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
}
.empty-icon{
  width:52px;height:52px;margin:0 auto 20px;border-radius:50%;
  border:1px dashed var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:20px;
}
.empty-title{font-size:22px;font-weight:700;color:var(--ink)}
.empty-desc{margin-top:12px;color:var(--muted);font-size:15.5px}
.empty-state .btn{margin-top:26px}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:104px;display:flex;flex-direction:column;gap:26px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--muted);
  padding-bottom:14px;border-bottom:1px solid var(--line);
}
.toc-list{margin-top:14px;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:14.5px;color:var(--ink-2);padding:7px 0 7px 12px;
  border-left:2px solid transparent;line-height:1.55;
  transition:border-color 160ms var(--ease),color 160ms var(--ease),padding-left 160ms var(--ease);
}
.toc-list a:hover,.toc-list a.is-current{border-left-color:var(--accent);color:var(--accent);padding-left:15px}
.hot-list{margin-top:14px;display:flex;flex-direction:column;gap:14px}
.hot-list li{padding-bottom:14px;border-bottom:1px solid var(--line)}
.hot-list li:last-child{padding-bottom:0;border-bottom:none}
.hot-list a{font-size:14.5px;font-weight:600;line-height:1.6;color:var(--ink)}
.hot-list span{display:block;margin-top:6px;font-size:12.5px;color:var(--muted)}
.side-cta{
  background:var(--ink);color:#fff;border-radius:var(--r-md);padding:24px;
}
.side-cta h3{font-size:17px;font-weight:700;color:#fff;border:none;padding:0}
.side-cta p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.75}
.side-cta .btn{margin-top:18px;width:100%;justify-content:center;padding:12px 18px;font-size:14px}

/* ---------- foot of article ---------- */
.art-foot{margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.nav-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.nav-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.nav-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6CFC1;color:inherit}
.nav-card .nc-label{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--muted)}
.nav-card .nc-title{margin-top:10px;font-size:17px;font-weight:700;color:var(--ink);line-height:1.5}
.nav-card:hover .nc-title{color:var(--accent)}
.art-foot .btn-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px}

/* ---------- related ---------- */
.related{padding:8px 0 96px}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:38px}
.sec-kicker{font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--accent)}
.sec-title{margin-top:12px;font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.02em}
.sec-desc{margin-top:12px;max-width:620px;color:var(--muted);font-size:15.5px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6CFC1}
.card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.card:hover .thumb img{transform:scale(1.03)}
.card .chip{
  position:absolute;left:14px;top:14px;
  background:var(--accent-2);color:var(--ink);
  font-size:11.5px;font-weight:700;letter-spacing:.06em;padding:5px 10px;border-radius:999px;
}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:19px;font-weight:700;line-height:1.5;color:var(--ink);transition:color 160ms var(--ease)}
.card:hover .card-title{color:var(--accent)}
.card-text{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.card-foot .more{font-weight:700;color:var(--accent)}

/* ---------- cta ---------- */
.cta-band{
  background:var(--ink);color:#fff;padding:88px 0;
  background-image:radial-gradient(900px 420px at 88% 12%,rgba(91,43,224,.42) 0%,rgba(20,18,15,0) 62%),linear-gradient(180deg,#14120F 0%,#1B1814 100%);
}
.cta-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center}
.cta-band h2{font-size:clamp(26px,3.2vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.2}
.cta-band p{margin-top:16px;color:rgba(255,255,255,.74);font-size:16px;max-width:520px}
.cta-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.cta-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-lg);padding:28px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.cta-card h3{font-size:17px;font-weight:700;color:#fff}
.cta-card ul{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.cta-card li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.78);line-height:1.7}
.cta-card li::before{content:"—";color:var(--accent-2)}

/* ---------- notice ---------- */
.notice{
  margin-top:36px;padding:18px 20px;font-size:13px;color:var(--muted);line-height:1.8;
  background:var(--surface-2);border-radius:var(--r-sm);
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.fb-name{font-size:20px;font-weight:800;color:#fff;letter-spacing:-.02em}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em}
.footer-col ul{margin-top:16px;display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--accent-2)}
.footer-note{margin-top:16px;font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.62)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-links{gap:18px}
  .nav-links a{font-size:14px}
  .search-btn{display:none}
}
@media (max-width:1024px){
  .container{padding:0 28px}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side > *{flex:1 1 260px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:860px){
  .nav-links{
    position:absolute;top:76px;left:0;right:0;
    flex-direction:column;align-items:flex-start;gap:4px;
    background:var(--bg);border-bottom:1px solid var(--line);
    padding:14px 28px 22px;box-shadow:var(--sh-2);
    display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-links a{width:100%;padding:12px 0;font-size:15px}
  .nav-links a::after{display:none}
  .burger{display:flex}
  .nav-actions .btn-primary{display:none}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 20px}
  .article-hero{padding:126px 0 64px}
  .article-body{padding:52px 0 64px}
  .prose{font-size:16.5px;line-height:1.88}
  .nav-cards{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .cta-band{padding:64px 0}
  .related{padding-bottom:64px}
  .art-tags{gap:8px}
}
@media (max-width:520px){
  .brand-main{font-size:17px}
  .brand-sub{display:none}
  .nav{height:68px}
  .nav-links{top:68px}
  .art-title{font-size:clamp(26px,7.4vw,34px)}
  .empty-state{padding:44px 20px}
  .cta-actions .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#14120F;
  --ink-2:#3A3630;
  --muted:#7A736A;
  --line:#E3DED4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --accent:#5B2BE0;
  --accent-2:#CBFF4D;
  --ok:#1F8A5B;
  --warn:#C2410C;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(20,18,15,.05),0 10px 28px -14px rgba(20,18,15,.14);
  --sh-2:0 18px 48px -20px rgba(20,18,15,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
  --pad:40px;
}
*,*::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:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad);}
.hidden{display:none;}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(247,245,240,.55);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(20,18,15,.08);
  transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{
  background:#FFFFFF;
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -22px rgba(20,18,15,.45);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
.brand{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-size:20px;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
.brand-sub{font-size:12px;letter-spacing:.06em;font-weight:600;color:var(--muted);margin-top:3px;}
.brand:hover .brand-main{color:var(--accent);}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent-2);
  transition:width .22s var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after,.nav-links a.is-active::after{width:100%;}
.nav-links a.is-active{color:var(--ink);}
.nav-actions{display:flex;align-items:center;gap:14px;}
.search-btn{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink-2);
  padding:8px 14px;border:1px solid var(--line);border-radius:var(--pill);background:rgba(255,255,255,.6);
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.search-btn:hover{border-color:var(--accent);color:var(--accent);background:#fff;}
.btn{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;
  padding:13px 26px;border-radius:var(--pill);transition:all .22s var(--ease);white-space:nowrap;
}
.btn .arrow{transition:transform .22s var(--ease);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:#4a1fc4;color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid rgba(20,18,15,.3);}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{color:var(--accent);}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--accent);position:relative;}
.btn-link::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);}
.btn-link:hover::after{transform:scaleX(1);}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);flex-direction:column;justify-content:center;align-items:center;gap:5px;background:rgba(255,255,255,.7);}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;isolation:isolate;overflow:hidden;
  padding:168px 0 96px;
  background-color:var(--ink);
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(115deg,rgba(20,18,15,.9) 0%,rgba(20,18,15,.72) 46%,rgba(20,18,15,.55) 100%);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:120px;z-index:-1;
  background:linear-gradient(180deg,rgba(247,245,240,0) 0%,var(--bg) 100%);
}
.hero-inner{max-width:900px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink);background:var(--accent-2);border-radius:var(--pill);padding:7px 16px;
}
.page-hero h1{
  margin:26px 0 20px;
  font-size:clamp(36px,5.4vw,68px);
  font-weight:800;line-height:1.05;letter-spacing:-.02em;color:#fff;
}
.page-hero h1 em{font-style:normal;color:var(--accent-2);}
.hero-lead{font-size:17px;line-height:1.9;color:rgba(255,255,255,.82);max-width:660px;}
.hero-meta{
  margin-top:38px;padding-top:24px;border-top:1px solid rgba(255,255,255,.18);
  display:flex;flex-wrap:wrap;gap:14px 42px;
}
.hero-meta div{display:flex;flex-direction:column;gap:2px;}
.hero-meta strong{font-size:22px;font-weight:800;color:#fff;letter-spacing:-.01em;}
.hero-meta span{font-size:13px;color:rgba(255,255,255,.62);letter-spacing:.04em;}

/* ---------- Breadcrumb & chips ---------- */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:16px 0;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:#C7C0B4;}
.crumb .current{color:var(--ink);font-weight:600;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;letter-spacing:.02em;
  padding:8px 16px;border-radius:var(--pill);border:1px solid var(--line);background:var(--surface);
  color:var(--ink-2);transition:all .22s var(--ease);
}
.chip:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);box-shadow:var(--sh-1);}
.chip.is-current{background:var(--ink);border-color:var(--ink);color:#fff;}

/* ---------- Sections ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(28px,3.4vw,42px);font-weight:700;line-height:1.16;margin-bottom:16px;}
.section-head p{color:var(--muted);font-size:16px;}
.section-dark{background:var(--ink);color:#fff;}
.section-dark .section-head h2{color:#fff;}
.section-dark .section-head p{color:rgba(255,255,255,.7);}
.section-alt{background:var(--surface-2);}

/* ---------- Layout: sticky anchor + article ---------- */
.layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:56px;align-items:start;}
.anchor-nav{position:sticky;top:108px;}
.anchor-nav h3{font-size:13px;letter-spacing:.12em;font-weight:700;color:var(--muted);margin-bottom:18px;}
.anchor-nav ul{border-left:1px solid var(--line);}
.anchor-nav li a{
  display:block;position:relative;padding:10px 0 10px 18px;font-size:15px;font-weight:600;color:var(--ink-2);
}
.anchor-nav li a::before{
  content:"";position:absolute;left:-1px;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--accent);transition:height .22s var(--ease);
}
.anchor-nav li a:hover{color:var(--accent);}
.anchor-nav li a:hover::before{height:22px;}
.anchor-note{
  margin-top:26px;padding:18px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);box-shadow:var(--sh-1);font-size:13px;line-height:1.75;color:var(--muted);
}
.prose h2{
  font-size:28px;font-weight:700;margin:48px 0 18px;padding-left:16px;position:relative;line-height:1.3;
}
.prose h2:first-child{margin-top:0;}
.prose h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;background:var(--accent);border-radius:3px;}
.prose h3{font-size:22px;font-weight:600;margin:32px 0 12px;}
.prose p{color:var(--ink-2);}
.prose .muted{color:var(--muted);font-size:15px;}
.lead-block{
  padding:26px 28px;border-radius:var(--r-md);background:var(--surface);border:1px solid var(--line);
  border-left:4px solid var(--accent);box-shadow:var(--sh-1);margin-bottom:36px;
}
.lead-block p{font-size:17.5px;color:var(--ink);margin:0;}

/* ---------- Steps ---------- */
.steps{display:flex;flex-direction:column;gap:0;margin:36px 0 12px;}
.step{
  position:relative;display:grid;grid-template-columns:112px minmax(0,1fr);gap:28px;
  padding:30px 0;border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line);}
.step-num{
  font-size:56px;font-weight:800;line-height:1;letter-spacing:-.04em;
  color:transparent;-webkit-text-stroke:1.5px var(--accent);
}
.step-body h3{margin:0 0 10px;font-size:22px;font-weight:700;}
.step-body p{font-size:16px;color:var(--muted);margin:0;}
.step-body .tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:12px;font-weight:600;letter-spacing:.06em;padding:5px 12px;border-radius:var(--pill);
  background:var(--surface-2);color:var(--ink-2);
}
.tag-accent{background:var(--accent-2);color:var(--ink);}

/* ---------- Checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:12px;}
.check-item{
  display:flex;gap:16px;padding:22px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.check-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.check-mark{
  flex:0 0 30px;height:30px;border-radius:8px;background:var(--accent-2);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
}
.check-item h3{font-size:17px;font-weight:700;margin-bottom:6px;}
.check-item p{font-size:14px;color:var(--muted);margin:0;line-height:1.7;}

/* ---------- Matrix (异常对照) ---------- */
.matrix{border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--surface);box-shadow:var(--sh-1);margin-top:12px;}
.matrix-row{display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:0;border-top:1px solid var(--line);}
.matrix-row:first-child{border-top:0;background:var(--surface-2);}
.matrix-row > div{padding:16px 20px;font-size:15px;line-height:1.7;}
.matrix-row > div + div{border-left:1px solid var(--line);}
.matrix-row.head > div{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted);}
.matrix-row strong{font-weight:700;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;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;
  padding:24px 0;text-align:left;font-size:18px;font-weight:650;color:var(--ink);
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  flex:0 0 26px;height:26px;position:relative;border:1px solid var(--line);border-radius:50%;
  transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:background .22s var(--ease);
}
.faq-icon::before{left:7px;right:7px;top:50%;height:1.5px;margin-top:-.75px;}
.faq-icon::after{top:7px;bottom:7px;left:50%;width:1.5px;margin-left:-.75px;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--accent);border-color:var(--accent);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a-inner{max-width:760px;padding:0 0 26px;font-size:16px;line-height:1.85;color:var(--muted);}

/* ---------- Notice ---------- */
.notice{
  display:flex;gap:18px;padding:26px 28px;border-radius:var(--r-md);
  background:var(--surface-2);border-left:4px solid var(--warn);margin:36px 0;
}
.notice h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--ink);}
.notice p{font-size:15px;color:var(--ink-2);margin:0;line-height:1.8;}

/* ---------- Cards (相关入口) ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6CFC2;}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-media .badge{
  position:absolute;left:16px;top:16px;background:var(--accent-2);color:var(--ink);
  font-size:12px;font-weight:700;letter-spacing:.06em;padding:6px 12px;border-radius:var(--pill);
}
.card-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:20px;font-weight:700;line-height:1.35;}
.card:hover .card-body h3{color:var(--accent);}
.card-body p{font-size:15px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}

/* ---------- CTA ---------- */
.cta-wrap{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;border-radius:var(--r-lg);
  padding:64px;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
}
.cta-wrap::before{
  content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(91,43,224,.55) 0%,rgba(91,43,224,0) 70%);
}
.cta-wrap h2{font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.2;margin-bottom:16px;}
.cta-wrap p{color:rgba(255,255,255,.74);font-size:16px;margin:0;}
.cta-form{position:relative;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-md);padding:28px;backdrop-filter:blur(10px);}
.cta-form label{display:block;font-size:13px;font-weight:600;letter-spacing:.06em;color:rgba(255,255,255,.7);margin-bottom:10px;}
.field-row{display:flex;gap:10px;}
.field-row input{
  flex:1;min-width:0;padding:14px 16px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.22);
  background:rgba(20,18,15,.5);color:#fff;font-size:15px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field-row input::placeholder{color:rgba(255,255,255,.42);}
.field-row input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(91,43,224,.24);}
.form-hint{margin-top:14px;font-size:13px;color:rgba(255,255,255,.55);line-height:1.7;}
.form-msg{margin-top:12px;font-size:13px;font-weight:600;display:none;}
.form-msg.ok{display:block;color:#8FE3BE;}
.form-msg.err{display:block;color:#FFB599;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 32px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.14);}
.fb-name{font-size:20px;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:-.01em;}
.footer-brand p{font-size:14px;line-height:1.8;margin:0;color:rgba(255,255,255,.62);}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a:hover{color:var(--accent-2);}
.footer-note{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin:0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding-top:26px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  :root{--pad:28px;}
  .layout{grid-template-columns:1fr;gap:36px;}
  .anchor-nav{position:static;}
  .anchor-nav ul{border-left:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .anchor-nav li a{padding-left:0;}
  .anchor-nav li a::before{display:none;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-wrap{grid-template-columns:1fr;padding:44px;}
  .nav-links{gap:18px;}
}
@media (max-width:860px){
  .nav-links{
    position:fixed;top:76px;left:0;right:0;z-index:110;
    flex-direction:column;align-items:flex-start;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:10px var(--pad) 22px;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:transform .22s var(--ease),opacity .22s var(--ease);
    box-shadow:0 24px 40px -30px rgba(20,18,15,.5);
  }
  .nav-links.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-links a{width:100%;padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;}
  .nav-links a::after{display:none;}
  .burger{display:flex;}
  .nav-actions .search-btn{display:none;}
  .nav-actions .btn-primary{display:none;}
  .page-hero{padding:132px 0 72px;}
  .section{padding:72px 0;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .check-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .step{grid-template-columns:76px minmax(0,1fr);gap:18px;}
  .step-num{font-size:42px;}
  .matrix-row{grid-template-columns:1fr;}
  .matrix-row > div + div{border-left:0;border-top:1px solid var(--line);}
  .matrix-row.head{display:none;}
  .cta-wrap{padding:32px 24px;}
  .field-row{flex-direction:column;}
  .prose h2{font-size:24px;}
}
@media (max-width:520px){
  :root{--pad:20px;}
  .brand-sub{display:none;}
  .page-hero h1{font-size:32px;}
  .hero-meta{gap:18px 28px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section{padding:56px 0;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
  --ink:#14120F;
  --ink-2:#3A3630;
  --muted:#7A736A;
  --line:#E3DED4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --accent:#5B2BE0;
  --accent-2:#CBFF4D;
  --ok:#1F8A5B;
  --warn:#C2410C;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --sh-1:0 1px 2px rgba(20,18,15,.05),0 10px 28px -14px rgba(20,18,15,.14);
  --sh-2:0 18px 48px -20px rgba(20,18,15,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}
*,*::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:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color 220ms var(--ease);}
a:hover{color:var(--accent);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
.section{padding:104px 0;}
.section-sm{padding:72px 0;}
.section-dark{background:var(--ink);color:#F2EFE8;}
.section-dark .lead,.section-dark p{color:#B9B2A6;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.1em;
  color:var(--muted);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-2);}
.sec-head{max-width:760px;margin-bottom:52px;}
.sec-head h2{font-size:clamp(28px,3.4vw,44px);margin:16px 0 16px;}
.sec-head p{color:var(--muted);font-size:16px;line-height:1.9;}
.mono{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ===== header / nav ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(247,245,240,.55);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(20,18,15,.08);
  box-shadow:0 1px 0 rgba(20,18,15,.02);
  transition:background 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:rgba(20,18,15,.14);
  box-shadow:0 12px 32px -22px rgba(20,18,15,.35);
}
.nav{display:flex;align-items:center;gap:28px;height:76px;}
.brand{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0;}
.brand-main{font-size:19px;font-weight:800;letter-spacing:-.02em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.14em;font-weight:600;margin-top:4px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent-2);transform:scaleX(0);transform-origin:left;
  transition:transform 220ms var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--accent);}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.search-btn{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink-2);
  padding:9px 16px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.6);
  transition:all 220ms var(--ease);
}
.search-btn:hover{border-color:var(--accent);color:var(--accent);}
.burger{display:none;flex-direction:column;gap:5px;padding:10px;border-radius:var(--r-sm);}
.burger span{display:block;width:20px;height:2px;background:var(--ink);transition:transform 220ms var(--ease),opacity 220ms var(--ease);}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:999px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease);
}
.btn .arrow{transition:transform 220ms var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:#4B21C4;color:#fff;box-shadow:var(--sh-2);transform:translateY(-1px);}
.btn-ghost{border:1px solid rgba(20,18,15,.28);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-light{background:var(--accent-2);color:var(--ink);}
.btn-light:hover{background:#BDF23C;color:var(--ink);transform:translateY(-1px);}
.btn-sm{padding:10px 20px;font-size:14px;}

/* ===== breadcrumb ===== */
.crumb-wrap{padding:108px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);align-items:center;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ===== hero ===== */
.cat-hero{position:relative;margin-top:24px;border-radius:var(--r-lg);overflow:hidden;min-height:460px;display:flex;align-items:flex-end;}
.cat-hero-bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.webp);background-size:cover;background-position:center;transform:scale(1.02);}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,18,15,.72) 0%,rgba(20,18,15,.62) 45%,rgba(20,18,15,.86) 100%);
}
.cat-hero-inner{position:relative;z-index:2;padding:64px 56px;max-width:860px;color:#F5F2EC;}
.cat-hero h1{
  font-size:clamp(38px,5.4vw,70px);font-weight:900;line-height:1.05;letter-spacing:-.025em;
  color:#fff;margin:18px 0 20px;
}
.cat-hero h1 em{font-style:normal;color:var(--accent-2);}
.cat-hero .lead{font-size:17px;line-height:1.85;color:#DCD6CB;max-width:620px;}
.cat-hero .hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.1em;
  color:#F5F2EC;background:rgba(203,255,77,.16);border:1px solid rgba(203,255,77,.45);
  padding:6px 14px;border-radius:999px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:32px;margin-top:34px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18);}
.hero-meta div{min-width:120px;}
.hero-meta .k{font-size:12px;letter-spacing:.08em;color:#A9A296;font-weight:600;}
.hero-meta .v{font-size:22px;font-weight:700;color:#fff;margin-top:4px;}

/* ===== chips ===== */
.chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);font-size:14px;font-weight:600;color:var(--ink-2);
  transition:all 220ms var(--ease);
}
.chip:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.chip.is-current{background:var(--ink);border-color:var(--ink);color:#fff;}
.chip.is-current:hover{color:#fff;background:#241F19;}

/* ===== intro strip ===== */
.intro-strip{display:grid;grid-template-columns:180px 1fr;gap:40px;padding:56px 0;border-bottom:1px solid var(--line);}
.intro-strip h2{font-size:20px;font-weight:700;}
.intro-strip p{color:var(--ink-2);font-size:16px;line-height:1.95;max-width:780px;}
.intro-strip p + p{margin-top:16px;}

/* ===== timeline ===== */
.timeline{position:relative;margin-top:8px;}
.tl-item{position:relative;display:grid;grid-template-columns:190px 1fr;gap:40px;padding:0 0 44px 0;}
.tl-item::before{
  content:"";position:absolute;left:172px;top:16px;bottom:-8px;width:1px;background:var(--line);
}
.tl-item:last-child::before{display:none;}
.tl-date{
  position:relative;text-align:right;padding-right:22px;
  font-size:15px;font-weight:700;color:var(--ink-2);
}
.tl-date .dot{
  position:absolute;right:-6px;top:9px;width:11px;height:11px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(91,43,224,.12);
}
.tl-date .batch{display:block;font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.06em;margin-top:6px;}
.tl-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:box-shadow 220ms var(--ease),transform 220ms var(--ease),border-color 220ms var(--ease);
}
.tl-body:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#D6D0C4;}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px;}
.tl-ver{
  font-size:13px;font-weight:700;letter-spacing:.04em;
  background:var(--surface-2);border-radius:999px;padding:5px 13px;color:var(--ink);
}
.tag{
  font-size:12px;font-weight:700;letter-spacing:.06em;padding:5px 12px;border-radius:999px;
  background:rgba(203,255,77,.5);color:#2C2A12;
}
.tag.outline{background:transparent;border:1px solid var(--line);color:var(--muted);}
.tl-body h3{font-size:22px;font-weight:650;margin-bottom:10px;}
.tl-body p{color:var(--muted);font-size:15px;line-height:1.85;}
.tl-foot{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);}
.link-arrow span{transition:transform 220ms var(--ease);}
.link-arrow:hover span{transform:translateX(4px);}

/* ===== version compare ===== */
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px;}
.vcard{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:30px 28px;box-shadow:var(--sh-1);
  transition:box-shadow 220ms var(--ease),transform 220ms var(--ease);
}
.vcard:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.vcard .num{font-size:44px;font-weight:800;letter-spacing:-.03em;color:var(--ink);line-height:1;}
.vcard .label{margin-top:14px;font-size:16px;font-weight:650;}
.vcard p{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.85;}

/* ===== notice split ===== */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;}
.split-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 420ms var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.split h2{font-size:clamp(26px,3vw,38px);margin:16px 0 18px;}
.split p{color:var(--muted);font-size:16px;line-height:1.9;}
.split p + p{margin-top:14px;}
.check-list{margin-top:26px;display:grid;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--ink-2);}
.check-list li::before{
  content:"";flex-shrink:0;width:18px;height:18px;margin-top:6px;border-radius:50%;
  background:rgba(91,43,224,.12);
  box-shadow:inset 0 0 0 1px rgba(91,43,224,.35);
  background-image:radial-gradient(circle at center,var(--accent) 0 4px,transparent 4.5px);
}

/* ===== caution block ===== */
.caution{
  background:var(--surface-2);border-left:4px solid var(--warn);
  border-radius:0 var(--r-md) var(--r-md) 0;padding:26px 30px;margin-top:36px;
}
.caution h3{font-size:18px;font-weight:700;color:var(--warn);margin-bottom:10px;}
.caution p{font-size:15px;color:var(--ink-2);line-height:1.85;}

/* ===== FAQ ===== */
.faq{max-width:860px;}
.faq details{border-bottom:1px solid var(--line);}
.faq details:first-of-type{border-top:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;font-size:18px;font-weight:650;color:var(--ink);
  transition:color 220ms var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--accent);}
.faq summary .ico{
  position:relative;flex-shrink:0;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line);transition:border-color 220ms var(--ease),background 220ms var(--ease);
}
.faq summary .ico::before,.faq summary .ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-2);
  transform:translate(-50%,-50%);transition:transform 220ms var(--ease),background 220ms var(--ease);
}
.faq summary .ico::before{width:10px;height:1.5px;}
.faq summary .ico::after{width:1.5px;height:10px;}
.faq details[open] summary .ico{background:var(--accent-2);border-color:var(--accent-2);}
.faq details[open] summary .ico::before{background:var(--ink);}
.faq details[open] summary .ico::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq .answer{padding:0 0 26px;max-width:760px;color:var(--muted);font-size:16px;line-height:1.9;}

/* ===== CTA ===== */
.cta-panel{
  background:linear-gradient(135deg,rgba(91,43,224,.92),rgba(20,18,15,.94));
  border-radius:var(--r-lg);padding:64px 56px;color:#F5F2EC;
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
}
.cta-panel h2{font-size:clamp(26px,3vw,38px);color:#fff;margin-bottom:16px;}
.cta-panel p{color:#D8D2C8;font-size:16px;line-height:1.9;}
.sub-form{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap;}
.sub-form input{
  flex:1 1 220px;min-width:0;padding:14px 18px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.1);color:#fff;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.sub-form input::placeholder{color:rgba(255,255,255,.6);}
.sub-form input:focus{outline:none;border-color:var(--accent-2);box-shadow:0 0 0 4px rgba(203,255,77,.22);}
.form-tip{margin-top:14px;font-size:13px;color:rgba(255,255,255,.68);}
.disclaimer{margin-top:40px;font-size:13px;color:var(--muted);line-height:1.8;}

/* ===== footer ===== */
.site-footer{background:var(--ink);color:#CFC9BE;padding:76px 0 34px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px;}
.footer-brand .fb-name{font-size:20px;font-weight:800;color:#fff;letter-spacing:-.02em;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.9;color:#9E978B;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#B5AEA2;}
.footer-col a:hover{color:var(--accent-2);}
.footer-note{font-size:14px;line-height:1.9;color:#9E978B;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8A8377;
}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ===== responsive ===== */
@media (max-width:1024px){
  .container{padding:0 28px;}
  .section{padding:80px 0;}
  .nav-links{gap:18px;}
  .nav-links a{font-size:14px;}
  .compare{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:36px;}
  .cta-panel{grid-template-columns:1fr;padding:48px 36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .intro-strip{grid-template-columns:1fr;gap:16px;}
  .cat-hero-inner{padding:48px 36px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .nav{height:66px;gap:14px;}
  .nav-links{
    position:fixed;top:66px;left:0;right:0;
    background:rgba(255,255,255,.98);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:0 20px;margin:0;
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px -28px rgba(20,18,15,.4);
    max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height 320ms var(--ease),opacity 220ms var(--ease),padding 220ms var(--ease);
  }
  .nav-links.is-open{max-height:420px;opacity:1;pointer-events:auto;padding:12px 20px 22px;}
  .nav-links a{width:100%;padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;}
  .nav-links a:last-child{border-bottom:0;}
  .nav-links a::after{display:none;}
  .burger{display:flex;}
  .search-btn{display:none;}
  .nav-actions .btn-primary{padding:10px 16px;font-size:14px;}
  .crumb-wrap{padding:92px 0 0;}
  .cat-hero{min-height:0;border-radius:var(--r-md);}
  .cat-hero-inner{padding:36px 22px;}
  .hero-meta{gap:22px;}
  .tl-item{grid-template-columns:1fr;gap:14px;padding-bottom:30px;}
  .tl-item::before{display:none;}
  .tl-date{text-align:left;padding:0;}
  .tl-date .dot{position:static;display:inline-block;margin-right:10px;vertical-align:middle;}
  .tl-date .batch{display:inline-block;margin:0 0 0 10px;}
  .tl-body{padding:22px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .cta-panel{padding:36px 24px;border-radius:var(--r-md);}
  .split-media img{aspect-ratio:3/2;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:32px;}
  .cat-hero .lead{font-size:15.5px;}
  .hero-meta .v{font-size:18px;}
  .btn{padding:13px 22px;font-size:14.5px;}
  .brand-main{font-size:17px;}
  .brand-sub{font-size:10px;letter-spacing:.1em;}
  .tl-body h3{font-size:19px;}
  .faq summary{font-size:16.5px;padding:20px 0;}
  .vcard .num{font-size:36px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink:#14120F;
  --ink-2:#3A3630;
  --muted:#7A736A;
  --line:#E3DED4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --accent:#5B2BE0;
  --accent-2:#CBFF4D;
  --ok:#1F8A5B;
  --warn:#C2410C;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --sh-1:0 1px 2px rgba(20,18,15,.05),0 10px 28px -14px rgba(20,18,15,.14);
  --sh-2:0 18px 48px -20px rgba(20,18,15,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --d1:120ms;
  --d2:220ms;
  --d3:420ms;
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--d2) var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent-2);
  outline-offset:2px;
  border-radius:4px;
}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.01em}
h1{font-size:clamp(34px,5vw,60px);font-weight:800;line-height:1.08;letter-spacing:-.02em}
h2{font-size:clamp(26px,3.2vw,40px);font-weight:700}
h3{font-size:23px;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.section{padding:104px 0}
.section-tight{padding:80px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent)}
.section-head{max-width:780px;margin-bottom:48px}
.section-head h2{margin:14px 0 16px}
.section-head p{color:var(--muted);font-size:16.5px}
.muted{color:var(--muted)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(247,245,240,.55);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(20,18,15,.08);
  transition:background var(--d2) var(--ease),box-shadow var(--d2) var(--ease),border-color var(--d2) var(--ease);
}
.site-header.is-scrolled{background:#FFFFFF;border-color:var(--line);box-shadow:var(--sh-1)}
.nav{display:flex;align-items:center;gap:26px;height:var(--nav-h)}
.brand{display:flex;flex-direction:column;line-height:1.15;margin-right:auto}
.brand-main{font-size:19px;font-weight:800;letter-spacing:-.01em}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.14em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{position:relative;font-size:15px;font-weight:600;color:var(--ink-2);padding:6px 0}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent-2);transition:width var(--d2) var(--ease);
}
.nav-links a:hover{color:var(--accent)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--ink)}
.nav-links a.is-active::after{width:100%;background:var(--accent)}
.nav-actions{display:flex;align-items:center;gap:12px}
.search-btn{
  font-size:14px;font-weight:600;color:var(--ink-2);
  padding:9px 16px;border:1px solid var(--line);border-radius:999px;
  background:rgba(255,255,255,.6);
  transition:color var(--d2) var(--ease),border-color var(--d2) var(--ease),background var(--d2) var(--ease);
}
.search-btn:hover{color:var(--accent);border-color:var(--accent);background:#fff}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:999px;
  font-size:15px;font-weight:650;line-height:1;
  transition:transform var(--d2) var(--ease),background var(--d2) var(--ease),color var(--d2) var(--ease),border-color var(--d2) var(--ease),box-shadow var(--d2) var(--ease);
}
.btn .arrow{transition:transform var(--d2) var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -14px rgba(91,43,224,.75)}
.btn-primary:hover{background:#4A1FD0;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border:1px solid rgba(20,18,15,.28);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.nav .btn-primary{padding:12px 20px;font-size:14px}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;position:relative}
.burger span{position:absolute;left:11px;right:11px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--d2) var(--ease),opacity var(--d2) var(--ease)}
.burger span:nth-child(1){top:14px}
.burger span:nth-child(2){top:20px}
.burger span:nth-child(3){top:26px}
.site-header.is-open .burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header.is-open .burger span:nth-child(2){opacity:0}
.site-header.is-open .burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* Hero */
.hero{
  position:relative;
  padding:170px 0 96px;
  color:#fff;
  background-image:
    linear-gradient(180deg,rgba(20,18,15,.88) 0%,rgba(20,18,15,.72) 46%,rgba(20,18,15,.78) 72%,rgba(247,245,240,.96) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.72);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb a:hover{color:var(--accent-2)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:#fff;font-weight:650}
.hero h1{margin:22px 0 0;max-width:16em}
.hero-lead{
  margin-top:22px;max-width:640px;
  font-size:17.5px;line-height:1.85;color:rgba(255,255,255,.86);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-actions .btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.hero-actions .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:42px;padding-top:26px;border-top:1px solid rgba(255,255,255,.16)}
.hero-tags .tag-label{font-size:13px;color:rgba(255,255,255,.6);align-self:center;margin-right:4px}
.chip{
  display:inline-block;padding:7px 15px;border-radius:999px;
  font-size:13px;font-weight:600;
  border:1px solid rgba(255,255,255,.28);color:#fff;
  transition:background var(--d2) var(--ease),color var(--d2) var(--ease),border-color var(--d2) var(--ease);
}
.chip:hover{background:var(--accent-2);color:var(--ink);border-color:var(--accent-2)}

/* 筛选标签 + 玩法卡片 */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin-bottom:40px;
}
.filter-bar .fl-title{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--muted);margin-right:6px}
.filter-btn{
  padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  transition:background var(--d2) var(--ease),color var(--d2) var(--ease),border-color var(--d2) var(--ease),transform var(--d2) var(--ease);
}
.filter-btn:hover{border-color:var(--accent);color:var(--accent)}
.filter-btn.is-on{background:var(--ink);border-color:var(--ink);color:#fff}
.play-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.play-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--d2) var(--ease),box-shadow var(--d2) var(--ease),border-color var(--d2) var(--ease);
}
.play-card:nth-child(even){margin-top:56px}
.play-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6CFC2}
.play-card.is-hidden{display:none}
.play-figure{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--surface-2)}
.play-figure img{width:100%;height:100%;object-fit:cover;transition:transform var(--d3) var(--ease)}
.play-card:hover .play-figure img{transform:scale(1.03)}
.play-body{padding:28px 28px 30px}
.play-tag{
  display:inline-block;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  background:var(--accent-2);color:var(--ink);
}
.play-body h3{margin:14px 0 12px}
.play-body .play-desc{color:var(--ink-2);font-size:16px;line-height:1.8}
.point-list{margin-top:20px;border-top:1px solid var(--line);padding-top:18px}
.point-list li{
  position:relative;padding-left:20px;font-size:15px;color:var(--muted);line-height:1.8;
  margin-bottom:8px;
}
.point-list li:last-child{margin-bottom:0}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--accent);opacity:.85;
}
.play-foot{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  margin-top:22px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.play-foot .link-more{font-weight:650;color:var(--accent);border-bottom:1px solid transparent}
.play-foot .link-more:hover{border-color:var(--accent)}

/* 上手节奏 */
.steps{background:var(--surface-2)}
.step-list{display:grid;gap:0}
.step{
  display:grid;grid-template-columns:132px 1fr;gap:34px;
  padding:34px 0;border-bottom:1px solid rgba(20,18,15,.1);
}
.step:first-child{border-top:1px solid rgba(20,18,15,.1)}
.step-num{
  font-size:52px;font-weight:800;line-height:1;letter-spacing:-.04em;
  color:var(--accent);font-variant-numeric:tabular-nums;
}
.step h3{margin-bottom:10px}
.step p{color:var(--ink-2);font-size:16px;max-width:760px}

/* 时间预算 */
.budget{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.budget-list li{
  display:grid;grid-template-columns:150px 1fr;gap:22px;align-items:baseline;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.budget-list li:first-child{border-top:1px solid var(--line)}
.budget-time{
  font-size:15px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.budget-list .b-text{font-size:15.5px;color:var(--ink-2)}
.budget-media{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  background:var(--surface-2);aspect-ratio:4/3;
}
.budget-media img{width:100%;height:100%;object-fit:cover}
.budget-note{margin-top:22px;font-size:13px;color:var(--muted)}

/* 数据条 */
.stats-block{background:var(--ink);color:#fff;border-radius:var(--r-lg);padding:64px 56px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px}
.stat .num{
  font-size:clamp(34px,4vw,48px);font-weight:800;line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
.stat .num em{font-style:normal;font-size:18px;font-weight:600;margin-left:4px;color:var(--accent-2)}
.stat .label{margin-top:12px;font-size:14px;color:rgba(255,255,255,.7);line-height:1.7}

/* FAQ */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-of-type{border-top:1px solid var(--line)}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:24px 52px 24px 0;font-size:18px;font-weight:650;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:8px;top:50%;
  transform:translateY(-50%);font-size:24px;line-height:1;color:var(--accent);
  transition:transform var(--d2) var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq-item .faq-answer{
  max-width:760px;padding:0 0 26px;color:var(--muted);font-size:16px;line-height:1.85;
}

/* CTA */
.cta{background:var(--ink);color:#fff;border-radius:var(--r-lg);padding:64px 56px;margin-bottom:16px}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.cta h2{color:#fff}
.cta p{color:rgba(255,255,255,.76);margin-top:16px;font-size:16.5px}
.subscribe{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.subscribe input{
  flex:1 1 240px;min-width:0;
  padding:14px 18px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.24);
  color:#fff;transition:border-color var(--d2) var(--ease),box-shadow var(--d2) var(--ease);
}
.subscribe input::placeholder{color:rgba(255,255,255,.5)}
.subscribe input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(91,43,224,.28);
}
.subscribe input.is-error{border-color:var(--warn)}
.form-msg{margin-top:14px;font-size:14px;min-height:22px}
.form-msg.err{color:#FFB4A0}
.form-msg.ok{color:var(--accent-2)}
.cta-fine{margin-top:26px;font-size:13px;color:rgba(255,255,255,.55);line-height:1.8}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:72px 0 32px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .fb-name{font-size:20px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col ul li{margin-bottom:11px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--accent-2)}
.footer-note{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.64);max-width:300px}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* 响应式 */
@media (max-width:1024px){
  .container{padding:0 28px}
  .section{padding:80px 0}
  .play-grid{gap:24px}
  .play-card:nth-child(even){margin-top:36px}
  .nav-links{gap:16px}
  .nav-links a{font-size:14px}
  .search-btn{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .stats-block{padding:52px 36px}
  .cta{padding:52px 36px}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .budget{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .burger{display:block}
  .nav{gap:14px}
  .brand-sub{display:none}
  .nav-links{
    position:absolute;top:var(--nav-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    padding:8px 20px 18px;
    display:none;
  }
  .site-header.is-open .nav-links{display:flex}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--accent)}
  .nav .btn-primary{display:none}
  .hero{padding:132px 0 72px}
  .hero-lead{font-size:16px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%;justify-content:center}
  .play-grid{grid-template-columns:1fr;gap:22px}
  .play-card:nth-child(even){margin-top:0}
  .step{grid-template-columns:1fr;gap:12px;padding:26px 0}
  .step-num{font-size:40px}
  .budget-list li{grid-template-columns:1fr;gap:6px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:24px}
  .stats-block{padding:40px 24px;border-radius:var(--r-md)}
  .cta{padding:40px 24px;border-radius:var(--r-md)}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  h3{font-size:20px}
  .subscribe{flex-direction:column}
  .subscribe .btn{width:100%;justify-content:center}
  .stats-grid{grid-template-columns:1fr}
  .hero h1{font-size:clamp(28px,7.6vw,38px)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .play-card:hover,.btn:hover{transform:none}
  .play-card:hover .play-figure img{transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#14120F;
  --ink-2:#3A3630;
  --muted:#7A736A;
  --line:#E3DED4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --accent:#5B2BE0;
  --accent-2:#CBFF4D;
  --ok:#1F8A5B;
  --warn:#C2410C;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(20,18,15,.05),0 10px 28px -14px rgba(20,18,15,.14);
  --sh-2:0 18px 48px -20px rgba(20,18,15,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color 220ms var(--ease);}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:4px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-sm) 0;z-index:200;}
.skip-link:focus{left:0;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:rgba(247,245,240,.55);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(20,18,15,.08);
  transition:background 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.site-header.is-solid{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.nav{display:flex;align-items:center;gap:26px;height:76px;position:relative;}
.brand{display:flex;flex-direction:column;line-height:1.15;flex:0 0 auto;}
.brand-main{font-size:19px;font-weight:800;letter-spacing:-.01em;}
.brand-sub{font-size:11px;font-weight:600;letter-spacing:.1em;color:var(--muted);margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{position:relative;font-size:15px;font-weight:600;padding:6px 0;color:var(--ink-2);}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent-2);
  transition:width 220ms var(--ease);
}
.nav-links a:hover{color:var(--accent);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--ink);font-weight:700;}
.nav-links a.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-btn{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--ink-2);
  background:rgba(255,255,255,.7);
  border:1px solid var(--line);
  border-radius:var(--pill);
  padding:8px 16px;
  transition:border-color 220ms var(--ease),color 220ms var(--ease),background 220ms var(--ease);
}
.search-btn:hover{border-color:var(--ink);color:var(--ink);background:#fff;}
.burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px;background:rgba(255,255,255,.7);}
.burger span{display:block;width:18px;height:2px;background:var(--ink);transition:transform 220ms var(--ease),opacity 220ms var(--ease);}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 28px;border-radius:var(--pill);
  font-size:15px;font-weight:650;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform 220ms var(--ease),background 220ms var(--ease),color 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease),filter 220ms var(--ease);
}
.btn .arrow{transition:transform 220ms var(--ease);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 12px 26px -14px rgba(91,43,224,.85);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-ghost{background:transparent;border-color:rgba(20,18,15,.28);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px);}
.btn-sm{padding:11px 22px;font-size:14px;}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:650;color:var(--accent);}
.link-more .arrow{transition:transform 220ms var(--ease);}
.link-more:hover .arrow{transform:translateX(4px);}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:5px 12px;border-radius:var(--pill);
  background:var(--accent-2);color:var(--ink);
}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--muted);}
.tag-violet{background:rgba(91,43,224,.1);color:var(--accent);}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:26px;}
.crumbs a{color:rgba(255,255,255,.78);}
.crumbs a:hover{color:var(--accent-2);}
.crumbs .cur{color:#fff;font-weight:650;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:158px 0 96px;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,18,15,.88) 0%,rgba(20,18,15,.72) 48%,rgba(20,18,15,.55) 72%,rgba(247,245,240,.96) 100%);
}
.page-hero .container{position:relative;z-index:1;}
.hero-tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--ink);background:var(--accent-2);
  padding:6px 14px;border-radius:var(--pill);
  margin-bottom:22px;
}
.page-hero h1{
  font-size:clamp(34px,5vw,60px);
  font-weight:800;line-height:1.08;letter-spacing:-.02em;
  max-width:900px;margin-bottom:22px;
}
.hero-lead{font-size:17.5px;line-height:1.85;color:rgba(255,255,255,.86);max-width:720px;margin-bottom:34px;}
.hero-cats{display:flex;flex-wrap:wrap;gap:10px;padding-top:26px;border-top:1px solid rgba(255,255,255,.2);}
.hero-cats .cat-label{font-size:13px;color:rgba(255,255,255,.62);align-self:center;margin-right:6px;}
.cat-pill{
  display:inline-flex;align-items:center;
  font-size:13.5px;font-weight:600;
  padding:8px 16px;border-radius:var(--pill);
  border:1px solid rgba(255,255,255,.3);
  color:#fff;
  transition:background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease);
}
.cat-pill:hover{background:rgba(255,255,255,.14);border-color:#fff;}
.cat-pill.is-current{background:var(--accent-2);border-color:var(--accent-2);color:var(--ink);}

/* ---------- 板块通用 ---------- */
.section{padding:104px 0;}
.section-alt{background:var(--surface-2);}
.section-tight{padding-top:0;}
.sec-head{max-width:740px;margin-bottom:52px;}
.sec-head .kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--accent);margin-bottom:14px;
}
.sec-head h2{font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.16;margin-bottom:16px;}
.sec-head p{color:var(--muted);font-size:17px;margin:0;}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 速查卡 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.quick-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:30px 26px 26px;
  box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:14px;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(91,43,224,.32);}
.quick-card .idx{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--muted);font-variant-numeric:tabular-nums;}
.quick-card h3{font-size:21px;font-weight:650;line-height:1.35;}
.quick-card p{font-size:15px;color:var(--muted);line-height:1.75;margin:0;flex:1;}
.quick-card .link-more{font-size:14px;}

/* ---------- 列表卡 ---------- */
.list-stack{display:flex;flex-direction:column;gap:18px;}
.list-card{
  position:relative;
  display:grid;grid-template-columns:168px 1fr;gap:24px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:18px;
  box-shadow:var(--sh-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
  overflow:hidden;
}
.list-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
  transform:scaleY(0);transform-origin:top;transition:transform 220ms var(--ease);
}
.list-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(91,43,224,.28);}
.list-card:hover::before{transform:scaleY(1);}
.list-thumb{
  width:168px;height:112px;border-radius:var(--r-sm);overflow:hidden;background:var(--surface-2);
}
.list-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.list-card:hover .list-thumb img{transform:scale(1.04);}
.list-body h3{font-size:20px;font-weight:650;line-height:1.4;margin-bottom:8px;}
.list-card:hover .list-body h3{color:var(--accent);}
.list-body p{font-size:15px;color:var(--muted);line-height:1.75;margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.list-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line);}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:24px 0;font-size:18px;font-weight:650;line-height:1.5;
  transition:color 220ms var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--accent);}
.faq details[open] summary{color:var(--accent);}
.faq .ico{position:relative;flex:0 0 auto;width:20px;height:20px;margin-top:5px;}
.faq .ico::before,.faq .ico::after{content:"";position:absolute;background:currentColor;transition:transform 220ms var(--ease);}
.faq .ico::before{left:0;right:0;top:9px;height:2px;}
.faq .ico::after{top:0;bottom:0;left:9px;width:2px;}
.faq details[open] .ico::after{transform:scaleY(0);}
.faq .answer{padding:0 0 26px;max-width:760px;font-size:16px;line-height:1.85;color:var(--muted);}
.faq .answer strong{color:var(--ink-2);font-weight:650;}

/* ---------- 警示块 ---------- */
.warn-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.warn-item{
  display:grid;grid-template-columns:auto 1fr;gap:18px;
  background:var(--surface-2);
  border-left:4px solid var(--warn);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:24px 26px;
}
.warn-item .w-ico{
  width:34px;height:34px;border-radius:50%;
  background:rgba(194,65,12,.12);color:var(--warn);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;
}
.warn-item h3{font-size:18px;font-weight:650;margin-bottom:8px;}
.warn-item p{font-size:15px;color:var(--ink-2);line-height:1.78;margin:0;}

/* ---------- 图文 + 清单 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.split-media{
  border-radius:var(--r-lg);overflow:hidden;background:var(--surface-2);
  box-shadow:var(--sh-2);
}
.split-media img{width:100%;height:auto;aspect-ratio:16/11;object-fit:cover;}
.checklist li{
  display:grid;grid-template-columns:auto 1fr;gap:20px;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.checklist li:first-child{padding-top:0;}
.checklist .num{
  font-size:26px;font-weight:800;letter-spacing:-.02em;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.checklist h3{font-size:18px;font-weight:650;margin-bottom:6px;}
.checklist p{font-size:15px;color:var(--muted);line-height:1.78;margin:0;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:40px;max-width:820px;}
.timeline::before{content:"";position:absolute;left:6px;top:10px;bottom:10px;width:1px;background:var(--line);}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-40px;top:8px;
  width:13px;height:13px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(91,43,224,.14);
}
.tl-item .tl-step{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--accent);margin-bottom:8px;}
.tl-item h3{font-size:20px;font-weight:650;margin-bottom:8px;}
.tl-item p{font-size:15.5px;color:var(--muted);line-height:1.8;margin:0;max-width:660px;}

/* ---------- CTA ---------- */
.cta{position:relative;background:var(--ink);color:#fff;padding:104px 0;overflow:hidden;}
.cta::after{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
  opacity:.18;
}
.cta .container{position:relative;z-index:1;}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;}
.cta h2{font-size:clamp(28px,3.4vw,42px);font-weight:700;line-height:1.18;margin-bottom:18px;color:#fff;}
.cta p{color:rgba(255,255,255,.74);font-size:16.5px;line-height:1.85;max-width:560px;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.cta-points span{
  font-size:13px;font-weight:600;color:rgba(255,255,255,.86);
  border:1px solid rgba(255,255,255,.26);border-radius:var(--pill);padding:7px 15px;
}
.form-panel{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-lg);
  padding:34px;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.form-panel h3{font-size:20px;font-weight:650;color:#fff;margin-bottom:10px;}
.form-panel .form-tip{font-size:14px;color:rgba(255,255,255,.66);line-height:1.7;margin-bottom:22px;}
.form-row{
  display:flex;gap:10px;align-items:center;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.2);
  border-radius:var(--pill);
  padding:7px 7px 7px 20px;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.form-row:focus-within{border-color:var(--accent-2);box-shadow:0 0 0 4px rgba(203,255,77,.16);}
.form-row input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:#fff;font-size:15px;padding:10px 0;
}
.form-row input::placeholder{color:rgba(255,255,255,.5);}
.form-note{font-size:13px;color:rgba(255,255,255,.55);margin-top:16px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.74);padding:76px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12);}
.fb-name{font-size:20px;font-weight:800;color:#fff;margin-bottom:14px;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.08em;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--accent-2);}
.footer-note{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.6);margin:0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:26px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
.js .reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 34px;}
}
@media (max-width:1024px){
  .container{padding:0 28px;}
  .section{padding:76px 0;}
  .page-hero{padding:140px 0 80px;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .split{gap:40px;}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;}
  .nav-links{
    display:none;
    position:absolute;left:-28px;right:-28px;top:100%;
    flex-direction:column;align-items:flex-start;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    padding:18px 28px 24px;
  }
  .nav.is-open .nav-links{display:flex;}
  .nav-links a{width:100%;padding:12px 0;font-size:16px;border-bottom:1px solid var(--line);}
  .nav-links a:last-child{border-bottom:0;}
  .nav-links a::after{display:none;}
  .burger{display:flex;}
}
@media (max-width:768px){
  body{font-size:16.5px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .page-hero{padding:126px 0 64px;}
  .hero-lead{font-size:16.5px;}
  .search-btn{display:none;}
  .nav-actions .btn-primary{padding:11px 18px;font-size:14px;}
  .quick-grid{grid-template-columns:1fr;gap:16px;}
  .warn-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:32px;}
  .list-card{grid-template-columns:1fr;gap:16px;}
  .list-thumb{width:100%;height:190px;}
  .timeline{padding-left:30px;}
  .tl-item::before{left:-30px;}
  .timeline::before{left:6px;}
  .form-panel{padding:24px;}
  .form-row{flex-direction:column;align-items:stretch;border-radius:var(--r-md);padding:14px;}
  .form-row input{padding:6px 4px;}
  .form-row .btn{justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .page-hero h1{font-size:30px;}
  .sec-head h2{font-size:26px;}
  .faq summary{font-size:16.5px;padding:20px 0;}
  .brand-sub{display:none;}
  .nav-actions .btn-primary span:not(.arrow){display:none;}
  .nav-actions .btn-primary{padding:10px 14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;}
}