/* roulang page: index */
:root{
  --ink:#14102A;
  --primary:#23D6A8;
  --primary-deep:#17b78d;
  --accent:#FF7A45;
  --second:#7C5CFF;
  --lemon:#FFD84D;
  --page:#F6F4EF;
  --surface:#FFFFFF;
  --title:#171428;
  --body:#4A4658;
  --muted:#8B8798;
  --border:#E4DFD6;
  --divider:#EFEBE4;
  --success:#16A34A;
  --warning:#F59E0B;
  --danger:#E5484D;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow:0 2px 8px rgba(20,16,42,.06),0 12px 32px rgba(20,16,42,.08);
  --shadow-hover:0 4px 12px rgba(20,16,42,.10),0 18px 44px rgba(20,16,42,.13);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:64px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--page);
  color:var(--body);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;letter-spacing:.005em;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-title{position:relative;padding-left:16px;font-size:32px;line-height:1.35;}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--primary);}
.section-sub{margin-top:10px;padding-left:16px;color:var(--muted);font-size:15px;line-height:1.75;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-stuck{background:#fff;border-bottom-color:var(--border);box-shadow:0 4px 20px rgba(20,16,42,.07);}
.nav-inner{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  align-items:center;height:var(--nav-h);gap:24px;
}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--second));
  display:flex;align-items:center;justify-content:center;
  color:#0f0a24;font-weight:700;font-size:15px;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text .b1{font-size:16px;font-weight:700;color:var(--title);}
.brand-text .b2{font-size:11px;color:var(--muted);letter-spacing:.14em;}
.nav-menu{display:flex;align-items:center;gap:4px;min-width:0;}
.nav-menu a{
  position:relative;display:inline-block;padding:8px 12px;border-radius:var(--r-pill);
  font-size:15px;color:var(--body);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-menu a:hover{color:var(--title);background:rgba(20,16,42,.05);}
.nav-menu a.is-active{color:var(--title);font-weight:600;}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:12px;min-width:0;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-pill);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(35,214,168,.18);}
.nav-search svg{flex-shrink:0;opacity:.5;}
.nav-search input{
  border:0;outline:none;background:transparent;width:100%;
  font-size:14px;color:var(--title);
}
.nav-search input::placeholder{color:var(--muted);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:#fff;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  border:1.5px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#0f1a16;box-shadow:0 6px 18px rgba(35,214,168,.32);}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:0 10px 26px rgba(35,214,168,.4);}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:rgba(20,16,42,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn-link{
  display:inline-flex;align-items:center;gap:4px;
  color:var(--primary);font-weight:600;font-size:14px;
  transition:color .2s var(--ease);
}
.btn-link svg{transition:transform .2s var(--ease);}
.btn-link:hover{color:var(--primary-deep);}
.btn-link:hover svg{transform:translateX(3px);}
.btn[disabled]{opacity:.6;pointer-events:none;}

/* ---------- Hero ---------- */
.hero{padding:calc(var(--nav-h) + 24px) 0 0;}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;min-height:560px;max-height:720px;
  padding-bottom:32px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(124,92,255,.12);color:var(--second);
  font-size:13px;font-weight:600;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--second);display:block;}
.hero h1{
  margin:20px 0 0;font-size:48px;line-height:1.22;letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;color:var(--primary-deep);}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.85;color:var(--body);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{
  display:flex;gap:36px;margin-top:44px;padding-top:28px;border-top:1px solid var(--border);flex-wrap:wrap;
}
.hero-stat b{display:block;font-size:24px;font-weight:700;color:var(--title);line-height:1.2;}
.hero-stat span{font-size:13px;color:var(--muted);}
.hero-visual{position:relative;display:flex;justify-content:center;}
.hero-card{
  position:relative;width:100%;max-width:330px;aspect-ratio:9/16;
  border-radius:20px;overflow:hidden;background:#EFEBE4;
  box-shadow:var(--shadow);transform:translateY(-16px);
}
.hero-card img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-md);box-shadow:var(--shadow);
  padding:12px 16px;font-size:13px;line-height:1.4;
}
.hero-float b{display:block;font-size:16px;color:var(--title);}
.hero-float.f1{left:-8px;top:22%;}
.hero-float.f2{right:-8px;bottom:16%;background:var(--ink);color:rgba(255,255,255,.72);border-color:transparent;}
.hero-float.f2 b{color:#fff;font-size:14px;}

/* ---------- 横滑 ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail>*{scroll-snap-align:start;flex:0 0 auto;}
.rail-nav{display:flex;gap:8px;}
.rail-btn{
  width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--title);
  box-shadow:0 2px 8px rgba(20,16,42,.06);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.rail-btn:hover{background:var(--primary);transform:translateY(-2px);}

.v-card{
  position:relative;width:260px;aspect-ratio:9/16;border-radius:20px;overflow:hidden;
  background:#EFEBE4;border:1px solid var(--border);box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),outline-color .22s var(--ease);
  outline:1px solid transparent;
}
.v-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);outline-color:var(--primary);}
.v-card img{width:100%;height:100%;object-fit:cover;}
.v-card .v-mask{
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(20,16,42,.88) 0%,rgba(20,16,42,.42) 38%,rgba(20,16,42,0) 66%);
}
.v-time{
  position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(20,16,42,.7);color:#fff;font-size:12px;line-height:1.6;
}
.v-tag{
  position:absolute;right:12px;top:12px;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(124,92,255,.9);color:#fff;font-size:12px;line-height:1.6;
}
.v-body{position:absolute;left:0;right:0;bottom:0;padding:16px 16px 18px;color:#fff;}
.v-body h3{color:#fff;font-size:16px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.v-meta{display:flex;align-items:center;gap:14px;margin-top:10px;font-size:12px;color:rgba(255,255,255,.78);}
.v-play{
  position:absolute;left:50%;top:44%;transform:translate(-50%,-50%) scale(.85);
  width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.92);
  display:flex;align-items:center;justify-content:center;opacity:0;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.v-card:hover .v-play{opacity:1;transform:translate(-50%,-50%) scale(1);}

/* ---------- 种草清单 ---------- */
.pick-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;}
.pick-item{
  display:grid;grid-template-columns:96px minmax(0,1fr);gap:20px;
  padding:26px 0;border-bottom:1px solid var(--divider);
  transition:background .2s var(--ease);
}
.pick-item:hover{background:rgba(255,255,255,.6);}
.pick-thumb{
  position:relative;width:96px;height:96px;border-radius:var(--r-md);
  overflow:hidden;background:#EFEBE4;flex-shrink:0;
}
.pick-thumb img{width:100%;height:100%;object-fit:cover;}
.pick-no{
  position:absolute;left:8px;top:8px;font-size:12px;font-weight:700;
  padding:2px 8px;border-radius:var(--r-pill);background:rgba(20,16,42,.72);color:#fff;line-height:1.7;
}
.pick-body h3{font-size:19px;line-height:1.5;font-weight:600;}
.pick-body p{margin-top:8px;font-size:15px;line-height:1.75;color:var(--body);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.pick-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;flex-wrap:wrap;}
.tags{display:flex;gap:8px;flex-wrap:wrap;}
.tag{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(124,92,255,.1);color:var(--second);font-size:13px;line-height:1.7;
}
.tag-warm{background:rgba(255,122,69,.12);color:#d1500f;}

/* ---------- 最新信息 ---------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px;}
.chip{
  padding:9px 18px;border-radius:var(--r-pill);border:1px solid var(--border);
  background:#fff;font-size:14px;color:var(--body);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{transform:translateY(-2px);border-color:var(--second);color:var(--second);}
.chip.is-active{background:var(--second);color:#fff;border-color:var(--second);}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-md);box-shadow:var(--shadow);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.news-cover{aspect-ratio:16/10;background:#EFEBE4;overflow:hidden;}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:18px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--body);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:16px;flex-wrap:wrap;}
.news-time{font-size:13px;color:var(--muted);}
.empty-state{
  padding:64px 24px;text-align:center;background:#fff;border:1px dashed var(--border);
  border-radius:var(--r-lg);
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:50%;margin:0 auto 16px;
  background:rgba(124,92,255,.1);display:flex;align-items:center;justify-content:center;color:var(--second);
}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:20px;}
.center-more{display:flex;justify-content:center;margin-top:44px;}

/* ---------- 口碑 ---------- */
.voice-card{
  width:340px;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow);
}
.voice-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--second),var(--primary));
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;
}
.voice-top b{display:block;font-size:15px;color:var(--title);line-height:1.5;}
.voice-top span{font-size:13px;color:var(--muted);}
.stars{color:var(--lemon);letter-spacing:2px;font-size:14px;margin-left:auto;}
.voice-card p{margin-top:14px;font-size:15px;line-height:1.8;color:var(--body);}
.voice-card time{display:block;margin-top:14px;font-size:13px;color:var(--muted);}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);padding:88px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-text h2{color:#fff;font-size:26px;line-height:1.4;}
.cta-text p{margin-top:10px;color:rgba(255,255,255,.7);font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.45);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--divider);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--title);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary-deep);}
.faq-icon{
  width:26px;height:26px;flex-shrink:0;border-radius:50%;
  background:rgba(35,214,168,.14);color:var(--primary-deep);
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#0f1a16;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--body);max-width:760px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 32px;}
.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,.12);
}
.footer-brand .brand-text .b1{color:#fff;}
.footer-brand .brand-text .b2{color:rgba(255,255,255,.5);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600;}
.footer-col ul li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--primary);}
.footer-col address{font-style:normal;font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding-top:26px;font-size:13px;color:rgba(255,255,255,.5);flex-wrap:wrap;
}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,42,.45);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;
  background:#fff;border-radius:20px 0 0 20px;z-index:71;
  transform:translateX(100%);transition:transform .26s var(--ease);
  padding:24px;display:flex;flex-direction:column;gap:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--title);
}
.drawer-menu{display:flex;flex-direction:column;}
.drawer-menu a{
  padding:15px 4px;border-bottom:1px solid var(--divider);font-size:16px;color:var(--title);
}
.drawer-menu a.is-active{color:var(--primary-deep);font-weight:600;}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 16px;
  border:1px solid var(--border);border-radius:var(--r-pill);background:var(--page);
}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .hero h1{font-size:42px;}
  .news-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:1023px){
  :root{--nav-h:60px;}
  .nav-inner{grid-template-columns:1fr auto;}
  .nav-menu{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:0;max-height:none;padding-bottom:16px;}
  .hero-card{max-width:280px;transform:none;}
  .hero-float.f1{left:0;}
  .hero-float.f2{right:0;}
  .section{padding:72px 0;}
  .pick-list{grid-template-columns:1fr;gap:0;}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:72px 0;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-title{font-size:24px;}
  .hero h1{font-size:32px;}
  .hero-lead{font-size:16px;}
  .hero-stats{gap:20px 28px;}
  .hero-stat{min-width:40%;}
  .rail-nav{display:none;}
  .v-card{width:220px;}
  .news-grid{grid-template-columns:1fr;}
  .pick-item{grid-template-columns:76px minmax(0,1fr);gap:14px;}
  .pick-thumb{width:76px;height:76px;}
  .cta-text h2{font-size:21px;}
  .voice-card{width:280px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:479px){
  .hero h1{font-size:28px;}
  .btn{padding:13px 22px;}
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .rail{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink:#14102A;
  --primary:#23D6A8;
  --primary-deep:#12A582;
  --accent:#FF7A45;
  --second:#7C5CFF;
  --lemon:#FFD84D;
  --page:#F6F4EF;
  --surface:#FFFFFF;
  --title:#171428;
  --body:#4A4658;
  --muted:#8B8798;
  --border:#E4DFD6;
  --divider:#EFEBE4;
  --success:#16A34A;
  --warning:#F59E0B;
  --danger:#E5484D;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-1:0 2px 8px rgba(20,16,42,.06), 0 12px 32px rgba(20,16,42,.08);
  --shadow-2:0 4px 12px rgba(20,16,42,.09), 0 18px 44px rgba(20,16,42,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--page);
  color:var(--body);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--title);letter-spacing:0;font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .22s var(--ease),background-color .22s var(--ease);
}
.site-header.is-scrolled{background:#fff;box-shadow:0 6px 22px rgba(20,16,42,.08);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--second),var(--primary));
  color:#fff;font-weight:800;font-size:14px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(124,92,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.08;}
.brand-text .b1{font-size:16px;font-weight:800;color:var(--title);}
.brand-text .b2{font-size:11px;color:var(--muted);letter-spacing:3px;}
.nav-menu{display:flex;align-items:center;gap:2px;}
.nav-menu a{
  position:relative;padding:8px 13px;border-radius:var(--r-pill);
  font-size:14px;color:var(--body);white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-menu a:hover{color:var(--title);background:rgba(20,16,42,.05);}
.nav-menu a.is-active{color:var(--title);font-weight:600;}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:3px;
  border-radius:3px;background:var(--primary);
}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-pill);
  color:var(--muted);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(35,214,168,.20);}
.nav-search input{
  flex:1;min-width:0;border:none;outline:none;background:transparent;
  font-size:14px;color:var(--title);
}
.nav-search input::placeholder{color:var(--muted);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:#fff;
  align-items:center;justify-content:center;
}
.nav-toggle span{
  position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:background-color .2s var(--ease);
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .22s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),filter .18s var(--ease);
}
.btn-primary{background:var(--primary);color:var(--ink);box-shadow:0 8px 20px rgba(35,214,168,.30);}
.btn-primary:hover{filter:brightness(.94);transform:translateY(-2px);box-shadow:0 12px 26px rgba(35,214,168,.36);}
.btn-primary:active{transform:translateY(1px);filter:brightness(.90);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:rgba(20,16,42,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-disabled,.btn[disabled]{opacity:.6;pointer-events:none;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary-deep);font-weight:600;font-size:14px;
  transition:color .2s var(--ease);
}
.text-link .arrow{display:inline-block;transition:transform .2s var(--ease);}
.text-link:hover{color:var(--ink);}
.text-link:hover .arrow{transform:translateX(3px);}

/* ---------- 标签与徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.6;
  background:rgba(124,92,255,.10);color:var(--second);
}
.tag-warm{background:rgba(255,122,69,.12);color:#D9532A;}
.tag-ink{background:rgba(20,16,42,.72);color:#fff;}
.tag-line{background:transparent;border:1px solid var(--border);color:var(--body);}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:26px 0 0;}
.breadcrumb nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary-deep);}
.breadcrumb .sep{color:#C9C3B8;}
.breadcrumb .current{color:var(--muted);max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章 ---------- */
.page-main{padding-bottom:var(--sec-y);}
.article-wrap{max-width:820px;margin:0 auto;padding:28px 0 0;}
.article-head{border-bottom:1px solid var(--divider);padding-bottom:26px;}
.article-head h1{
  font-size:38px;line-height:1.32;font-weight:700;color:var(--title);
  margin:16px 0 18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#CFC9BE;}
.article-meta time{color:var(--muted);}
.article-cover{margin:28px 0 0;}
.article-cover img{
  width:100%;aspect-ratio:21/9;object-fit:cover;
  border-radius:var(--r-lg);background:#EFEBE4;
  box-shadow:var(--shadow-1);
}
.article-content{max-width:780px;margin:0 auto;}
.article-body{padding:34px 0 0;font-size:17px;line-height:1.9;color:var(--body);word-break:break-word;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;font-size:26px;line-height:1.45;color:var(--title);
  margin:40px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:4px;background:var(--primary);
}
.article-body h3{font-size:20px;font-weight:600;color:var(--title);margin:28px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;
  border-left:3px solid var(--primary);
  background:rgba(35,214,168,.08);
  border-radius:0 var(--r-md) var(--r-md) 0;
}
.article-body img{border-radius:var(--r-md);margin:24px auto;}
.article-body a{color:var(--primary-deep);border-bottom:1px solid rgba(35,214,168,.45);}
.article-body a:hover{color:var(--ink);border-bottom-color:var(--ink);}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--border);border-radius:var(--r-sm);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--divider);text-align:left;}
.article-body thead th{background:#F1EFE8;color:var(--title);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAF9F6;}
.article-body code{background:#F1EFE8;padding:2px 6px;border-radius:6px;font-size:14px;color:#5B5470;}

.empty-state{
  margin:36px 0 0;padding:56px 24px;text-align:center;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);
}
.empty-state .ico{
  width:56px;height:56px;margin:0 auto 18px;border-radius:18px;
  background:rgba(124,92,255,.10);color:var(--second);
  display:flex;align-items:center;justify-content:center;
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--muted);line-height:1.8;margin-bottom:22px;}

.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin:38px 0 0;padding-top:26px;border-top:1px solid var(--divider);}
.article-actions{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0 0;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:36px 0 0;}
.post-nav a{
  display:block;padding:18px 20px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.post-nav a:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.post-nav .label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;}
.post-nav .name{display:block;font-size:16px;font-weight:600;color:var(--title);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.post-nav .next{text-align:right;}

.back-row{display:flex;justify-content:center;margin:44px 0 0;}

/* ---------- 相关推荐 ---------- */
.related{margin:88px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.section-head h2{
  position:relative;font-size:28px;line-height:1.35;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:4px;background:var(--primary);
}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D8D1C5;}
.card .thumb{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EFEBE4;}
.card .card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card h3{
  font-size:17px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card p{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card .card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:13px;color:var(--muted);}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);margin-top:88px;padding:64px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:26px;line-height:1.4;}
.cta-inner p{color:rgba(255,255,255,.70);font-size:15px;margin-top:8px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:70px 0 0;border-top:1px solid rgba(255,255,255,.10);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand .brand-text .b1{color:#fff;font-size:17px;}
.footer-brand .brand-text .b2{color:rgba(255,255,255,.55);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--primary);}
.footer-col address{font-style:normal;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0 26px;font-size:13px;color:rgba(255,255,255,.48);}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(20,16,42,.45);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;z-index:90;width:84vw;max-width:360px;height:100%;
  background:#fff;border-radius:20px 0 0 20px;padding:26px 22px;
  transform:translateX(102%);transition:transform .26s var(--ease);
  display:flex;flex-direction:column;gap:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer h4{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:1px;}
.drawer-links{display:flex;flex-direction:column;gap:4px;}
.drawer-links a{padding:12px 14px;border-radius:12px;font-size:15px;color:var(--title);background:#FAF9F6;}
.drawer-links a:hover{background:rgba(35,214,168,.14);}
.drawer .nav-search{width:100%;}
.drawer .btn{width:100%;}
.drawer-close{align-self:flex-end;width:38px;height:38px;border-radius:12px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--muted);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-search{width:190px;}
  .article-head h1{font-size:34px;}
}
@media (max-width:1023px){
  :root{--sec-y:72px;}
  .container{padding:0 24px;}
  .nav-menu{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .article-head h1{font-size:31px;}
  .cta-inner h2{font-size:23px;}
}
@media (max-width:767px){
  :root{--sec-y:56px;}
  .container{padding:0 16px;}
  .nav-inner{height:56px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:13px;}
  .brand-text .b1{font-size:15px;}
  .article-wrap{padding-top:16px;}
  .article-head h1{font-size:26px;line-height:1.42;}
  .article-cover img{aspect-ratio:16/9;border-radius:var(--r-md);}
  .article-body{font-size:16px;}
  .article-body h2{font-size:22px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .breadcrumb .current{max-width:44vw;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav .next{text-align:left;}
  .card-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{margin-top:56px;padding:48px 0;}
  .related{margin-top:56px;}
}
@media (max-width:520px){
  .btn{width:100%;}
  .article-actions .btn,.cta-actions .btn{width:100%;}
  .cta-actions{width:100%;}
  .article-head h1{font-size:23px;}
  .breadcrumb .current{max-width:38vw;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category1 */
:root{
  --ink:#14102A;
  --primary:#23D6A8;
  --primary-deep:#17BE92;
  --accent:#FF7A45;
  --second:#7C5CFF;
  --lemon:#FFD84D;
  --page:#F6F4EF;
  --surface:#FFFFFF;
  --title:#171428;
  --body:#4A4658;
  --muted:#8B8798;
  --border:#E4DFD6;
  --divider:#EFEBE4;
  --success:#16A34A;
  --warning:#F59E0B;
  --danger:#E5484D;
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,16,42,.06);
  --sh-2:0 2px 8px rgba(20,16,42,.06),0 12px 32px rgba(20,16,42,.08);
  --sh-3:0 4px 12px rgba(20,16,42,.10),0 18px 44px rgba(20,16,42,.12);
  --section-y:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--body);
  background:var(--page);
  letter-spacing:0;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure,address{margin:0}
ul,ol{padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--section-y) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
h1{font-size:44px;line-height:1.28;font-weight:700;color:var(--title)}
h2{
  font-size:30px;line-height:1.4;font-weight:700;color:var(--title);
  padding-left:16px;position:relative;
}
h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:26px;border-radius:2px;background:var(--primary)}
h3{font-size:21px;line-height:1.6;font-weight:600;color:var(--title)}
p{color:var(--body)}
.lead{font-size:17px;line-height:1.9;color:var(--body)}
.muted{color:var(--muted);font-size:13px}
.section-sub{margin-top:10px;font-size:15px;line-height:1.75;color:var(--muted);max-width:640px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:var(--ink);box-shadow:0 6px 18px rgba(35,214,168,.32)}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:0 10px 26px rgba(35,214,168,.38)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:rgba(20,16,42,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.6;pointer-events:none}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary-deep);font-size:15px;font-weight:600;
  transition:color 200ms var(--ease);
}
.link-more .arw{transition:transform 220ms var(--ease)}
.link-more:hover .arw{transform:translateX(3px)}
.link-more:hover{color:var(--primary)}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.6;
  background:rgba(124,92,255,.10);color:var(--second);font-weight:500;
}
.tag-time{background:rgba(20,16,42,.72);color:#fff}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(35,214,168,.14);color:#0E8C6C;
  font-size:13px;font-weight:600;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--primary)}
.badge-accent{background:rgba(255,122,69,.14);color:#C24F21}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  height:var(--nav-h);
  background:rgba(246,244,239,.86);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid var(--border);
  transition:background-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.site-header.is-scrolled{background:#fff;box-shadow:var(--sh-1)}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-left,.nav-right{display:flex;align-items:center;gap:24px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--second));
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(124,92,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text .b1{font-size:16px;font-weight:700;color:var(--title)}
.brand-text .b2{font-size:11px;color:var(--muted);letter-spacing:.5px}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu a{
  position:relative;padding:8px 12px;border-radius:var(--r-s);
  font-size:15px;color:var(--body);
  transition:color 200ms var(--ease),background-color 200ms var(--ease);
}
.nav-menu a:hover{color:var(--title);background:rgba(20,16,42,.05)}
.nav-menu a.is-active{color:var(--title);font-weight:600}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;padding:8px 16px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-pill);
  color:var(--muted);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,214,168,.22)}
.nav-search input{border:none;background:transparent;outline:none;width:100%;font-size:14px;color:var(--title)}
.nav-search input::placeholder{color:var(--muted)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:#fff;
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform 200ms var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 抽屉 ---------- */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:#fff;border-radius:20px 0 0 20px;
  padding:28px 24px;z-index:120;
  transform:translateX(102%);
  transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;
  box-shadow:-12px 0 40px rgba(20,16,42,.18);
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer .drawer-title{font-size:13px;color:var(--muted)}
.nav-drawer nav{display:flex;flex-direction:column;gap:4px}
.nav-drawer nav a{padding:12px 14px;border-radius:var(--r-s);font-size:16px;color:var(--title)}
.nav-drawer nav a:hover,.nav-drawer nav a.is-active{background:rgba(35,214,168,.14)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,42,.45);z-index:110;
  opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-search{display:flex;align-items:center;gap:8px;padding:10px 16px;border:1px solid var(--border);border-radius:var(--r-pill);background:#fff;color:var(--muted)}
.drawer-search input{border:none;outline:none;width:100%;font-size:14px;background:transparent}

/* ---------- 面包屑 ---------- */
.crumb{padding-top:calc(var(--nav-h) + 28px);font-size:13px;color:var(--muted)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--muted);transition:color 200ms var(--ease)}
.crumb a:hover{color:var(--primary-deep)}
.crumb .sep{color:var(--border)}
.crumb .cur{color:var(--body)}

/* ---------- 矮版 Hero ---------- */
.hero-short{
  padding:32px 0 72px;
}
.hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  min-height:460px;
}
.hero-copy h1{margin:18px 0 16px;max-width:12em}
.hero-copy .lead{max-width:30em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-visual{position:relative;justify-self:end;width:100%;max-width:340px}
.hero-card{
  position:relative;border-radius:20px;overflow:hidden;
  aspect-ratio:9/16;background:var(--divider);
  box-shadow:var(--sh-3);border:1px solid var(--border);
}
.hero-card img{width:100%;height:100%;object-fit:cover}
.hero-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,16,42,0) 45%,rgba(20,16,42,.72) 100%);
}
.hero-card .cap{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;color:#fff;
}
.hero-card .cap strong{display:block;font-size:16px;font-weight:600;line-height:1.5}
.hero-card .cap span{font-size:13px;opacity:.75}
.float-card{
  position:absolute;background:#fff;border:1px solid var(--border);border-radius:var(--r-m);
  box-shadow:var(--sh-2);padding:12px 16px;
}
.float-card .num{font-size:20px;font-weight:700;color:var(--title);line-height:1.3}
.float-card .lbl{font-size:12px;color:var(--muted)}
.float-a{top:26px;left:-30px}
.float-b{bottom:60px;right:-26px}

/* ---------- 竖屏卡网格 ---------- */
.portrait-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.p-card{
  position:relative;border-radius:20px;overflow:hidden;background:var(--surface);
  border:1px solid var(--border);box-shadow:var(--sh-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
  display:block;
}
.p-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(35,214,168,.65)}
.p-card:active{transform:translateY(1px)}
.p-media{position:relative;aspect-ratio:9/16;background:var(--divider);overflow:hidden}
.p-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.p-card:hover .p-media img{transform:scale(1.03)}
.p-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,16,42,.16) 0%,rgba(20,16,42,0) 38%,rgba(20,16,42,.82) 100%);
}
.p-top{position:absolute;top:12px;left:12px;right:12px;display:flex;justify-content:space-between;gap:8px;z-index:2}
.p-play{
  position:absolute;left:50%;top:46%;transform:translate(-50%,-50%) scale(.9);
  width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.92);
  display:flex;align-items:center;justify-content:center;z-index:2;
  opacity:0;transition:opacity 220ms var(--ease),transform 220ms var(--ease);
}
.p-play svg{margin-left:3px}
.p-card:hover .p-play{opacity:1;transform:translate(-50%,-50%) scale(1)}
.p-body{position:absolute;left:0;right:0;bottom:0;padding:16px;z-index:2;color:#fff}
.p-body h3{color:#fff;font-size:16px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.p-meta{display:flex;align-items:center;gap:12px;margin-top:10px;font-size:12px;opacity:.82}
.p-meta svg{vertical-align:-2px;margin-right:4px}

/* ---------- 对比面板 ---------- */
.panel-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:20px;margin-top:8px}
.panel{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:28px;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.panel:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.panel-lg{
  background:var(--ink);color:#fff;border-color:transparent;position:relative;overflow:hidden;
}
.panel-lg h3{color:#fff;font-size:24px;margin-bottom:12px}
.panel-lg p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.8;max-width:36em}
.panel-lg .glow{
  position:absolute;right:-80px;top:-80px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,214,168,.42),rgba(35,214,168,0) 70%);
}
.panel-stack{display:grid;gap:20px}
.panel-list{display:grid;gap:14px;margin-top:18px}
.panel-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.75}
.panel-list .idx{
  flex:0 0 26px;height:26px;border-radius:8px;background:rgba(124,92,255,.12);color:var(--second);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.panel-mini h3{font-size:18px}
.panel-mini .num{font-size:30px;font-weight:700;color:var(--title);line-height:1.4}
.panel-mini .num small{font-size:13px;font-weight:500;color:var(--muted);margin-left:6px}
.panel-cta{margin-top:16px}

/* ---------- 精选清单 ---------- */
.pick-list{border-top:1px solid var(--divider)}
.pick-item{
  display:grid;grid-template-columns:120px 1fr auto;gap:24px;align-items:center;
  padding:24px 0;border-bottom:1px solid var(--divider);
  transition:background-color 200ms var(--ease);
}
.pick-item:hover{background:rgba(255,255,255,.6)}
.pick-thumb{
  width:120px;aspect-ratio:16/10;border-radius:var(--r-m);overflow:hidden;
  background:var(--divider);border:1px solid var(--border);
}
.pick-thumb img{width:100%;height:100%;object-fit:cover}
.pick-main h3{font-size:19px;margin-bottom:6px}
.pick-main p{font-size:15px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.pick-no{
  font-size:13px;font-weight:700;color:var(--second);letter-spacing:1px;margin-right:10px;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-item:first-child{border-top:1px solid var(--divider)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--title);
  transition:color 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-deep)}
.faq-item .plus{
  flex:0 0 24px;width:24px;height:24px;position:relative;
  transition:transform 220ms var(--ease);
}
.faq-item .plus::before,.faq-item .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--second);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item .plus::before{width:14px;height:2px}
.faq-item .plus::after{width:2px;height:14px}
.faq-item[open] .plus{transform:rotate(45deg)}
.faq-item .answer{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--body);max-width:760px}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);border-radius:var(--r-l);padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band .glow{
  position:absolute;left:-60px;bottom:-100px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,92,255,.42),rgba(124,92,255,0) 70%);
}
.cta-band h2{color:#fff;padding-left:0}
.cta-band h2::before{display:none}
.cta-band p{color:rgba(255,255,255,.7);font-size:15px;margin-top:10px;max-width:32em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.55)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:var(--section-y);padding:72px 0 28px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand-text .b1{color:#fff;font-size:18px}
.site-footer .brand-text .b2{color:rgba(255,255,255,.5)}
.footer-brand p{font-size:14px;line-height:1.9;margin-top:16px;max-width:30em}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color 200ms var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-col address{font-style:normal;font-size:14px;line-height:2}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  h1{font-size:38px}
  .portrait-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1023px){
  :root{--section-y:72px}
  .container{padding:0 24px}
  .nav-menu{display:none}
  .nav-search{display:none}
  .nav-right .btn{display:none}
  .nav-toggle{display:flex}
  h1{font-size:32px}
  h2{font-size:26px}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:0}
  .hero-visual{justify-self:center;max-width:320px}
  .float-a{left:-14px}
  .float-b{right:-14px}
  .panel-grid{grid-template-columns:1fr}
  .portrait-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px}
}
@media (max-width:767px){
  :root{--section-y:56px;--nav-h:56px}
  .container{padding:0 16px}
  h1{font-size:27px}
  h2{font-size:22px}
  h2::before{height:20px}
  .brand-mark{width:34px;height:34px;border-radius:10px}
  .brand-text .b1{font-size:15px}
  .hero-copy h1{max-width:none}
  .hero-actions .btn{width:100%}
  .hero-visual{max-width:280px}
  .float-card{padding:10px 12px}
  .float-card .num{font-size:17px}
  .portrait-grid{grid-template-columns:1fr}
  .pick-item{grid-template-columns:1fr;gap:14px}
  .pick-thumb{width:100%;aspect-ratio:16/9}
  .panel{padding:22px}
  .panel-lg h3{font-size:20px}
  .cta-band{padding:28px 22px;border-radius:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:479px){
  h1{font-size:24px}
  .hero-copy .lead{font-size:15px}
  .btn{padding:13px 22px;font-size:14px}
  .float-a,.float-b{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --ink:#14102A;
  --primary:#23D6A8;
  --primary-dark:#1BC296;
  --accent:#FF7A45;
  --second:#7C5CFF;
  --lemon:#FFD84D;
  --page:#F6F4EF;
  --surface:#FFFFFF;
  --title:#171428;
  --body:#4A4658;
  --muted:#8B8798;
  --border:#E4DFD6;
  --divider:#EFEBE4;
  --success:#16A34A;
  --warning:#F59E0B;
  --danger:#E5484D;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-sm:0 2px 8px rgba(20,16,42,.06);
  --shadow-md:0 2px 8px rgba(20,16,42,.06),0 12px 32px rgba(20,16,42,.08);
  --shadow-lg:0 4px 12px rgba(20,16,42,.08),0 20px 44px rgba(20,16,42,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--body);
  background:var(--page);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--title);line-height:1.35;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;padding:14px 28px;cursor:pointer;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-primary{background:var(--primary);color:var(--ink);box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(20,16,42,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;transition:color var(--dur) var(--ease)}
.btn-text::after{content:"→";font-size:15px;transition:transform var(--dur) var(--ease)}
.btn-text:hover{color:var(--primary-dark)}
.btn-text:hover::after{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.6;cursor:not-allowed;transform:none}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h)}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--ink);color:var(--primary);
  display:grid;place-items:center;font-size:13px;font-weight:700;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text .b1{font-size:16px;font-weight:700;color:var(--title)}
.brand-text .b2{font-size:11px;color:var(--muted);letter-spacing:3px}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu a{position:relative;font-size:15px;color:var(--body);padding:4px 0;transition:color var(--dur) var(--ease)}
.nav-menu a:hover{color:var(--title)}
.nav-menu a.is-active{color:var(--title);font-weight:600}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:3px;border-radius:var(--r-pill);
  background:var(--primary);
}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-search{
  display:flex;align-items:center;gap:8px;width:224px;padding:9px 16px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-pill);color:var(--muted);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(35,214,168,.18)}
.nav-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--title);font-size:14px}
.nav-search input::placeholder{color:var(--muted)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--border);
  background:var(--surface);cursor:pointer;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:11px;width:20px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle span{top:20px}
.nav-toggle span::before{content:"";left:0;top:-6px}
.nav-toggle span::after{content:"";left:0;top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}
.nav-overlay{
  position:fixed;inset:0;background:rgba(20,16,42,.45);opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease);z-index:70;
}
body.nav-open .nav-overlay{opacity:1;visibility:visible}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{
  position:relative;font-size:30px;padding-left:16px;margin-bottom:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--primary);
}
.section-head p{font-size:15px;color:var(--muted)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.breadcrumb a{color:var(--body);transition:color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--muted)}
.breadcrumb .current{color:var(--muted)}

/* ---------- 分类首屏 ---------- */
.cat-hero{padding:76px 0 20px}
.cat-hero-inner{
  position:relative;padding:44px 44px 40px;border-radius:var(--r-lg);background:var(--surface);
  box-shadow:var(--shadow-md);border:1px solid var(--border);overflow:hidden;
}
.cat-hero-inner::after{
  content:"";position:absolute;right:-90px;top:-90px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(124,92,255,.16),rgba(124,92,255,0) 70%);
}
.cat-hero h1{font-size:44px;letter-spacing:-.5px;max-width:760px;margin-bottom:18px}
.cat-hero .lead{font-size:17px;color:var(--body);max-width:720px;margin-bottom:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border-radius:var(--r-pill);
  font-size:13px;background:rgba(124,92,255,.1);color:var(--second);font-weight:600;
}
.chip.is-warm{background:rgba(255,122,69,.12);color:#E2603A}
.chip.is-mint{background:rgba(35,214,168,.14);color:#0F9C79}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}

/* ---------- 图文交替行 ---------- */
.rows-wrap{padding:56px 0 8px}
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
  padding:56px 0;border-top:1px solid var(--divider);
}
.feature-row:first-of-type{border-top:1px solid var(--divider)}
.feature-row.reverse .feature-media{order:-1}
.feature-media{position:relative}
.feature-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-md);
  background:#EFEBE4;
}
.feature-media .row-num{
  position:absolute;left:-14px;bottom:-14px;width:64px;height:64px;border-radius:20px;
  background:var(--ink);color:var(--primary);display:grid;place-items:center;
  font-size:19px;font-weight:700;letter-spacing:1px;box-shadow:var(--shadow-md);
}
.feature-body h3{font-size:22px;margin-bottom:14px}
.feature-body p{font-size:16px;color:var(--body);margin-bottom:16px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.tag{
  display:inline-block;padding:5px 13px;border-radius:var(--r-pill);font-size:13px;
  background:rgba(124,92,255,.1);color:var(--second);font-weight:500;
}

/* ---------- 编号流程 ---------- */
.steps-section{padding:88px 0}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--divider)}
.step{padding:36px 32px 8px;border-left:1px solid var(--divider)}
.step:first-child{border-left:0;padding-left:0}
.step:last-child{padding-right:0}
.step .step-num{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;
  background:var(--ink);color:var(--primary);font-size:15px;font-weight:700;margin-bottom:16px;
}
.step h3{font-size:20px;margin-bottom:10px}
.step p{font-size:15px;color:var(--body)}
.step .step-hint{display:inline-block;margin-top:12px;font-size:13px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--title);
  transition:color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-dark)}
.faq-item summary::after{
  content:"+";font-size:22px;line-height:1;color:var(--second);flex-shrink:0;
  transition:transform var(--dur) var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--body);max-width:820px}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;background:var(--ink) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  color:#fff;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(20,16,42,.88)}
.cta-inner{
  position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;
  gap:36px;padding:88px 0;
}
.cta-inner h2{font-size:28px;color:#fff;margin-bottom:10px}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.72)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:72px 0 40px;
  border-top:1px solid rgba(255,255,255,.1);
}
.footer-brand .brand-text .b1{color:#fff}
.footer-brand .brand-text .b2{color:rgba(255,255,255,.55)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin-top:16px;max-width:320px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-col address{font-style:normal;font-size:14px;line-height:2;color:rgba(255,255,255,.7)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:22px 0 30px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .cat-hero h1{font-size:40px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-menu{gap:18px}
  .nav-search{width:180px}
  .cat-hero-inner{padding:36px 32px}
  .feature-row{gap:40px;padding:48px 0}
  .steps-grid{grid-template-columns:1fr;border-top:1px solid var(--divider)}
  .step{border-left:0;padding:28px 0;border-top:1px solid var(--divider)}
  .step:first-child{border-top:0;padding-top:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 32px}
}
@media (max-width:767px){
  :root{--nav-h:56px}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .nav-search,.nav-right .btn{display:none}
  .nav-toggle{display:block}
  .nav-menu{
    position:fixed;top:0;right:0;height:100vh;width:84vw;max-width:340px;
    background:var(--surface);flex-direction:column;align-items:flex-start;gap:6px;
    padding:88px 26px 32px;border-radius:20px 0 0 20px;box-shadow:var(--shadow-lg);
    transform:translateX(102%);transition:transform 240ms var(--ease);z-index:75;
  }
  body.nav-open .nav-menu{transform:translateX(0)}
  .nav-menu a{width:100%;padding:14px 4px;font-size:16px;border-bottom:1px solid var(--divider)}
  .nav-menu a.is-active::after{display:none}
  .nav-menu a.is-active{color:var(--primary-dark)}
  .cat-hero{padding:40px 0 8px}
  .cat-hero-inner{padding:28px 22px 26px}
  .cat-hero h1{font-size:31px}
  .cat-hero .lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .rows-wrap{padding:32px 0 0}
  .feature-row{grid-template-columns:1fr;gap:26px;padding:40px 0}
  .feature-row.reverse .feature-media{order:0}
  .feature-media .row-num{left:auto;right:12px;bottom:-12px;width:54px;height:54px;border-radius:16px;font-size:17px}
  .feature-body h3{font-size:20px}
  .steps-section{padding:56px 0}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:64px 0;gap:24px}
  .cta-inner h2{font-size:23px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:480px){
  .cat-hero h1{font-size:27px}
  .section-head h2{font-size:24px}
  .brand-text .b1{font-size:15px}
  .brand-text .b2{letter-spacing:2px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category3 */
:root{
  --ink:#14102A;
  --primary:#23D6A8;
  --primary-dark:#17BE93;
  --accent:#FF7A45;
  --second:#7C5CFF;
  --lemon:#FFD84D;
  --page:#F6F4EF;
  --surface:#FFFFFF;
  --title:#171428;
  --body:#4A4658;
  --muted:#8B8798;
  --border:#E4DFD6;
  --divider:#EFEBE4;
  --success:#16A34A;
  --warning:#F59E0B;
  --danger:#E5484D;
  --r-xs:10px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,16,42,.06), 0 12px 32px rgba(20,16,42,.08);
  --sh-2:0 4px 14px rgba(20,16,42,.09), 0 20px 46px rgba(20,16,42,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--body);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--primary-dark)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
section{position:relative}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.02em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);filter:brightness(.96)}
.btn-primary{background:var(--primary);color:var(--ink);box-shadow:0 6px 18px rgba(35,214,168,.32)}
.btn-primary:hover{background:var(--primary-dark);color:var(--ink);transform:translateY(-2px);box-shadow:0 10px 26px rgba(35,214,168,.38)}
.btn-ghost{border:1.5px solid rgba(23,20,40,.85);color:var(--ink);background:transparent}
.btn-ghost:hover{background:rgba(20,16,42,.08);color:var(--ink);transform:translateY(-2px)}
.btn-ghost-light{border:1.5px solid rgba(255,255,255,.6);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-link{display:inline-flex;align-items:center;gap:4px;color:var(--primary-dark);font-weight:600;font-size:15px;padding:0;background:none}
.btn-link .arw{transition:transform .2s var(--ease)}
.btn-link:hover .arw{transform:translateX(3px)}
.btn-link:hover{color:var(--primary)}
.btn[disabled],.btn.is-disabled{opacity:.6;pointer-events:none}

/* ---------- Badges / tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.5;font-weight:600;
}
.badge-second{background:rgba(124,92,255,.10);color:var(--second)}
.badge-primary{background:rgba(35,214,168,.16);color:#0E9C7A}
.badge-ink{background:rgba(20,16,42,.75);color:#fff}
.badge-lemon{background:rgba(255,216,77,.28);color:#8A6A00}
.meta{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  height:var(--nav-h);
  display:flex;align-items:center;
  background:rgba(246,244,239,.86);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(10px);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--border);box-shadow:0 6px 22px rgba(20,16,42,.07)}
.nav-inner{display:grid;grid-template-columns:1fr auto;align-items:center;gap:24px;height:100%}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--ink),#2C2354);
  color:var(--primary);font-size:13px;font-weight:700;letter-spacing:.04em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text .b1{font-size:16px;font-weight:700;color:var(--title);letter-spacing:.01em}
.brand-text .b2{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.16em}
.nav-menu{display:flex;align-items:center;gap:22px;min-width:0}
.nav-menu a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--body);
  padding:6px 0;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a:hover{color:var(--title)}
.nav-menu a.is-active{color:var(--title);font-weight:600}
.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;padding:8px 16px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-pill);
  color:var(--muted);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,214,168,.28)}
.nav-search input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:14px;color:var(--title)}
.nav-search input::placeholder{color:var(--muted)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:#fff;
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- Hero ---------- */
.page-hero{
  background-color:var(--ink);
  background-image:linear-gradient(96deg,rgba(20,16,42,.94) 6%,rgba(20,16,42,.72) 58%,rgba(20,16,42,.5) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center 30%;
  color:#fff;
  padding:44px 0 60px;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,92,255,.34),rgba(124,92,255,0) 68%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);position:relative;z-index:1}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{color:rgba(255,255,255,.6)}
.hero-line{display:inline-flex;margin:22px 0 14px;position:relative;z-index:1}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.28;font-weight:700;letter-spacing:.01em;
  color:#fff;max-width:820px;position:relative;z-index:1;
}
.page-hero h1 em{font-style:normal;color:var(--primary)}
.page-hero .lead{
  margin-top:16px;max-width:680px;
  font-size:17px;line-height:1.85;color:rgba(255,255,255,.78);
  position:relative;z-index:1;
}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:36px;margin-top:30px;
  position:relative;z-index:1;
}
.hero-stats .stat b{display:block;font-size:24px;font-weight:700;color:var(--primary);line-height:1.2}
.hero-stats .stat span{font-size:13px;color:rgba(255,255,255,.66)}

/* ---------- Section shells ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-title{position:relative;padding-left:16px}
.section-title::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:var(--primary);
}
.section-title h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;color:var(--title);line-height:1.35}
.section-title p{margin-top:8px;font-size:15px;color:var(--muted);max-width:640px}
.divider{height:1px;background:var(--divider);border:0;margin:0}

/* ---------- Timeline ---------- */
.timeline-wrap{max-width:940px}
.timeline{position:relative;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:9px;top:10px;bottom:26px;width:2px;background:var(--border);border-radius:2px;
}
.tl-item{position:relative;padding:0 0 30px 44px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:5px;width:20px;height:20px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(35,214,168,.14);
}
.tl-item:first-child .tl-dot{background:var(--primary);box-shadow:0 0 0 5px rgba(35,214,168,.2)}
.tl-item.is-quiet .tl-dot{border-color:var(--border);box-shadow:none}
.tl-date{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:6px}
.tl-date .dotmini{width:5px;height:5px;border-radius:50%;background:var(--accent)}
.tl-item h3{font-size:19px;font-weight:600;color:var(--title);line-height:1.5}
.tl-item p{margin-top:6px;font-size:15px;line-height:1.75;color:var(--body)}
.tl-foot{margin-top:10px;display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.tl-thumb{
  margin-top:14px;width:100%;max-width:420px;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-md);border:1px solid var(--border);background:var(--divider);
}
.tl-side{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start;
}
.panel{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
}
.panel h3{font-size:18px;font-weight:600;color:var(--title);margin-bottom:12px}
.panel p{font-size:15px;line-height:1.8;color:var(--body)}
.panel p + p{margin-top:12px}
.panel .num-list{margin-top:18px;display:grid;gap:14px}
.panel .num-list li{display:flex;gap:12px;font-size:14px;line-height:1.7;color:var(--body)}
.panel .num-list b{
  flex-shrink:0;width:26px;height:26px;border-radius:9px;
  background:rgba(124,92,255,.10);color:var(--second);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.stats-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:8px}
.stat-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.stat-card b{display:block;font-size:24px;font-weight:700;color:var(--title);line-height:1.3}
.stat-card span{font-size:13px;color:var(--muted)}

/* ---------- Small feature rows ---------- */
.mini-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:32px}
.mini-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D9D2C6}
.mini-card h3{font-size:17px;font-weight:600;color:var(--title)}
.mini-card p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--body)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-item:first-child{border-top:1px solid var(--divider)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  text-align:left;padding:22px 0;
  font-size:17px;font-weight:600;color:var(--title);line-height:1.6;
}
.faq-q .plus{
  flex-shrink:0;position:relative;width:22px;height:22px;border-radius:50%;
  background:rgba(35,214,168,.16);transition:transform .22s var(--ease),background-color .22s var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;width:11px;height:2px;border-radius:2px;background:#0E9C7A;transform:translate(-50%,-50%);
}
.faq-q .plus::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.is-open .plus{transform:rotate(45deg);background:rgba(35,214,168,.3)}
.faq-q:hover{color:var(--primary-dark)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--body);max-width:760px}
.faq-item.is-open .faq-a{max-height:320px}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:#fff;padding:88px 0;overflow:hidden;position:relative}
.cta-band::after{
  content:"";position:absolute;left:-140px;bottom:-180px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,214,168,.28),rgba(35,214,168,0) 66%);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;position:relative;z-index:1}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;color:#fff;line-height:1.45;max-width:560px}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.76);padding:72px 0 28px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand .brand-text .b1{color:#fff;font-size:17px}
.footer-brand .brand-text .b2{color:rgba(255,255,255,.5)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--primary)}
.footer-col address{font-style:normal;font-size:14px;line-height:1.9;color:rgba(255,255,255,.7)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- Skeleton / empty ---------- */
.skeleton{background:var(--divider);border-radius:var(--r-md);animation:pulse 1.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.55}}
.empty-state{
  text-align:center;padding:52px 24px;border:1px dashed var(--border);border-radius:var(--r-lg);background:#fff;
}
.empty-state .ico{
  width:52px;height:52px;border-radius:16px;margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(124,92,255,.10);color:var(--second);font-size:22px;font-weight:700;
}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:18px}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .tl-side{grid-template-columns:minmax(0,1fr) 280px;gap:26px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-menu{
    position:fixed;top:0;right:0;z-index:90;
    width:84vw;max-width:340px;height:100%;
    background:#fff;border-radius:20px 0 0 20px;
    box-shadow:-16px 0 48px rgba(20,16,42,.22);
    display:flex;flex-direction:column;align-items:flex-start;gap:6px;
    padding:88px 26px 32px;
    transform:translateX(105%);
    transition:transform .26s var(--ease);
  }
  .nav-menu a{width:100%;font-size:16px;padding:12px 0;border-bottom:1px solid var(--divider)}
  .nav-menu a::after{display:none}
  .nav-menu a.is-active{color:var(--primary-dark)}
  body.nav-open .nav-menu{transform:translateX(0)}
  body.nav-open::after{
    content:"";position:fixed;inset:0;z-index:85;background:rgba(20,16,42,.45);
  }
  .nav-toggle{display:inline-flex}
  .nav-search{width:180px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .tl-side{grid-template-columns:1fr}
  .mini-grid{grid-template-columns:1fr 1fr}
  .cta-band{padding:64px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  :root{--nav-h:56px}
  .container{padding:0 16px}
  .nav-search{display:none}
  .page-hero{padding:32px 0 48px}
  .hero-stats{gap:20px 28px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .stats-strip{grid-template-columns:1fr 1fr}
  .mini-grid{grid-template-columns:1fr}
  .timeline::before{left:7px}
  .tl-item{padding-left:34px;padding-bottom:26px}
  .tl-dot{width:16px;height:16px;top:6px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-col address{max-width:100%}
}
@media (max-width:479px){
  .page-hero h1{font-size:27px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .cta-actions{width:100%}
  .stats-strip{grid-template-columns:1fr}
  .brand-text .b1{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* roulang page: category4 */
:root{
  --ink:#14102A;
  --primary:#23D6A8;
  --primary-dark:#12BE92;
  --accent:#FF7A45;
  --second:#7C5CFF;
  --lemon:#FFD84D;
  --page:#F6F4EF;
  --surface:#FFFFFF;
  --title:#171428;
  --body:#4A4658;
  --muted:#8B8798;
  --border:#E4DFD6;
  --divider:#EFEBE4;
  --success:#16A34A;
  --warning:#F59E0B;
  --danger:#E5484D;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,16,42,.06), 0 12px 32px rgba(20,16,42,.08);
  --sh-2:0 4px 12px rgba(20,16,42,.10), 0 18px 44px rgba(20,16,42,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:64px;
  --sec-y:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--body);
  background:var(--page);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}

.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- HEADER ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,244,239,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--border);
  transition:background .22s var(--ease), box-shadow .22s var(--ease);
}
.site-header.is-scrolled{background:#FFFFFF;box-shadow:0 2px 8px rgba(20,16,42,.06);}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:var(--nav-h);
}
.nav-left{display:flex;align-items:center;gap:32px;min-width:0;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--ink);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text .b1{font-size:16px;font-weight:700;color:var(--title);letter-spacing:.5px;}
.brand-text .b2{font-size:11px;color:var(--muted);letter-spacing:2px;}
.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-menu a{
  position:relative;
  font-size:15px;
  color:var(--body);
  padding:6px 0;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;
  height:3px;border-radius:3px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-menu a:hover{color:var(--title);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--title);font-weight:600;}
.nav-menu a.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;
  padding:0 16px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  color:var(--muted);
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(35,214,168,.18);}
.nav-search input{
  flex:1;min-width:0;border:0;background:none;outline:none;
  font-size:14px;color:var(--title);
}
.nav-search input::placeholder{color:var(--muted);}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:var(--surface);
  align-items:center;justify-content:center;
}
.nav-toggle span{
  position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .22s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-mask{
  position:fixed;inset:0;background:rgba(20,16,42,.45);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
  z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:var(--ink);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 22px rgba(35,214,168,.35);}
.btn-primary:active{transform:translateY(-1px);filter:brightness(.96);}
.btn-ghost{background:transparent;border:1.5px solid var(--ink);color:var(--ink);}
.btn-ghost:hover{background:rgba(20,16,42,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(-1px);filter:brightness(.96);}
.btn-light{background:var(--surface);color:var(--ink);border:1.5px solid transparent;}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-outline-light{background:transparent;border:1.5px solid rgba(255,255,255,.5);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
}
.btn-link::after{content:"→";transition:transform .2s var(--ease);}
.btn-link:hover::after{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{opacity:.6;pointer-events:none;}

/* ---------- BADGES ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.6;
}
.badge-primary{background:rgba(35,214,168,.14);color:#0E8C6C;}
.badge-second{background:rgba(124,92,255,.10);color:var(--second);}
.badge-ink{background:rgba(20,16,42,.7);color:#fff;}
.badge-accent{background:rgba(255,122,69,.14);color:#D2542A;}
.badge-lemon{background:rgba(255,216,77,.28);color:#8A6B00;}

/* ---------- HERO ---------- */
.page-hero{
  position:relative;
  padding:calc(var(--nav-h) + 56px) 0 64px;
  background:
    radial-gradient(900px 340px at 12% -10%, rgba(35,214,168,.16), transparent 70%),
    radial-gradient(700px 320px at 92% 0%, rgba(124,92,255,.14), transparent 72%),
    var(--page);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;right:-80px;top:-60px;width:320px;height:320px;border-radius:50%;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.18;
  filter:blur(2px);
  pointer-events:none;
}
.crumbs{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:20px;
}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:var(--border);}
.crumbs .cur{color:var(--muted);}
.page-hero h1{
  font-size:44px;
  line-height:1.28;
  font-weight:700;
  color:var(--title);
  letter-spacing:.5px;
  max-width:820px;
}
.page-hero h1 em{font-style:normal;color:var(--primary-dark);}
.hero-lead{
  margin-top:18px;
  max-width:760px;
  font-size:17px;
  color:var(--body);
}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:36px;
  margin-top:32px;
}
.hero-stats .stat strong{
  display:block;font-size:24px;font-weight:700;color:var(--title);line-height:1.3;
}
.hero-stats .stat span{font-size:13px;color:var(--muted);}

/* ---------- TAG CLOUD ---------- */
.tag-section{padding:0 0 8px;}
.tagbar{
  display:flex;flex-wrap:wrap;gap:12px;
  padding:22px 0 26px;
  border-bottom:1px solid var(--divider);
}
.tag-chip{
  padding:9px 20px;
  border-radius:var(--r-pill);
  background:var(--surface);
  border:1px solid var(--border);
  font-size:14px;
  color:var(--body);
  transition:all .2s var(--ease);
}
.tag-chip:hover{border-color:var(--second);color:var(--second);transform:translateY(-2px);}
.tag-chip.is-active{background:var(--second);border-color:var(--second);color:#fff;box-shadow:0 8px 20px rgba(124,92,255,.28);}

/* ---------- SECTION ---------- */
.section{padding:var(--sec-y) 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  position:relative;
  padding-left:16px;
  font-size:30px;
  font-weight:700;
  color:var(--title);
  line-height:1.4;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;background:var(--primary);
}
.section-head p{margin-top:14px;font-size:16px;color:var(--body);}

/* ---------- FAQ GRID ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  align-items:start;
}
.faq-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:6px 24px;
  transition:box-shadow .22s var(--ease), transform .22s var(--ease);
}
.faq-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.faq-card[hidden]{display:none;}
.faq-item{border-bottom:1px solid var(--divider);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 0;
  font-size:17px;font-weight:600;color:var(--title);
  list-style:none;cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  position:relative;flex-shrink:0;
  width:20px;height:20px;
  transition:transform .22s var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--muted);border-radius:2px;
}
.faq-item summary .plus::before{left:0;top:9px;width:20px;height:2px;}
.faq-item summary .plus::after{left:9px;top:0;width:2px;height:20px;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item[open] summary{color:var(--primary-dark);}
.faq-item .answer{
  padding:0 0 20px;
  font-size:15px;line-height:1.85;color:var(--body);
}
.faq-item .answer .meta{
  display:inline-flex;gap:10px;margin-top:12px;font-size:13px;color:var(--muted);
}

/* ---------- QUICK INDEX ---------- */
.quick-band{background:var(--surface);border-top:1px solid var(--divider);border-bottom:1px solid var(--divider);}
.quick-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.quick-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:22px;border-radius:var(--r-md);
  background:var(--page);
  border:1px solid var(--border);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}
.quick-item:hover{transform:translateY(-2px);box-shadow:var(--sh-1);border-color:var(--primary);}
.quick-item .num{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;
  background:rgba(124,92,255,.12);color:var(--second);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.quick-item h3{font-size:16px;font-weight:600;color:var(--title);line-height:1.6;}
.quick-item p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--body);}

/* ---------- SUPPORT ---------- */
.support-wrap{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
}
.support-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:#EFEBE4;
  aspect-ratio:16/10;
}
.support-media img{width:100%;height:100%;object-fit:cover;}
.support-list{margin-top:26px;display:grid;gap:14px;}
.support-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;line-height:1.8;color:var(--body);
}
.support-list li .dot{
  flex-shrink:0;margin-top:10px;width:8px;height:8px;border-radius:50%;background:var(--primary);
}
.support-card{
  margin-top:28px;
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;
  padding:20px 24px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
}
.support-card .k{font-size:13px;color:var(--muted);}
.support-card .v{font-size:15px;font-weight:600;color:var(--title);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);
  color:#fff;
  padding:88px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-60px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle, rgba(35,214,168,.28), transparent 68%);
}
.cta-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-inner h2{
  font-size:26px;font-weight:700;color:#fff;line-height:1.5;max-width:620px;padding-left:0;
}
.cta-inner h2::before{display:none;}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- FOOTER ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:72px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-text .b1{color:#fff;}
.footer-brand .brand-text .b2{color:rgba(255,255,255,.55);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px;}
.footer-col h4{
  font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.5px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--primary);}
.footer-col address{
  font-style:normal;font-size:14px;line-height:2;color:rgba(255,255,255,.68);
}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:var(--muted);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
  :root{--sec-y:80px;}
  .page-hero h1{font-size:40px;}
}
@media (max-width:1023px){
  :root{--sec-y:72px;}
  .nav-menu{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-menu.is-open{
    display:flex;
    position:fixed;top:0;right:0;bottom:0;
    width:84vw;max-width:340px;
    flex-direction:column;
    align-items:flex-start;
    gap:6px;
    padding:88px 26px 32px;
    background:var(--surface);
    border-radius:20px 0 0 20px;
    box-shadow:-20px 0 44px rgba(20,16,42,.22);
    z-index:80;
    overflow-y:auto;
  }
  .nav-menu.is-open a{
    width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--divider);
  }
  .nav-menu.is-open a::after{display:none;}
  .nav-menu.is-open a.is-active{color:var(--primary-dark);}
  .faq-grid{grid-template-columns:1fr;}
  .quick-list{grid-template-columns:1fr 1fr;}
  .support-wrap{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .page-hero{padding:calc(var(--nav-h) + 40px) 0 48px;}
  .page-hero h1{font-size:34px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  :root{--sec-y:56px;--nav-h:56px;}
  .container{padding:0 16px;}
  .brand-mark{width:32px;height:32px;font-size:12px;border-radius:10px;}
  .brand-text .b1{font-size:15px;}
  .page-hero h1{font-size:28px;}
  .hero-lead{font-size:16px;}
  .hero-stats{gap:24px;}
  .section-head h2{font-size:23px;}
  .quick-list{grid-template-columns:1fr;}
  .faq-card{padding:4px 18px;}
  .faq-item summary{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:64px 0;}
  .cta-inner h2{font-size:21px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .btn-sm{width:auto;}
}
@media (max-width:479px){
  .page-hero h1{font-size:25px;}
  .tag-chip{padding:8px 15px;font-size:13px;}
  .hero-stats{width:100%;}
  .hero-stats .stat{flex:1 1 45%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}