/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --c-ink:#0B1220;
  --c-ink-2:#16213A;
  --c-brand:#17457E;
  --c-brand-2:#2C6BB3;
  --c-accent:#12C9A8;
  --c-signal:#F2833C;
  --c-bg:#F4F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-muted:#5A6B82;
  --neon:linear-gradient(90deg,#12C9A8,#35C8FF);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(16,34,64,.06),0 12px 28px -16px rgba(16,34,64,.22);
  --shadow-2:0 18px 38px -18px rgba(16,34,64,.30);
  --sp-section:clamp(56px,8vw,104px);
  --container:1240px;
}
/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:none;transition:color 180ms ease;}
a:hover{color:var(--c-brand-2);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(18,201,168,.35);border-radius:6px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.num,.stat-num,.rank-no{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:transform 180ms ease,box-shadow 180ms ease,background-color 180ms ease,color 180ms ease,border-color 180ms ease,filter 180ms ease;
}
.btn-lg{height:50px;padding:0 28px;font-size:16px;}
.btn-signal{
  background:linear-gradient(96deg,#F2833C,#FF9E4F);
  color:#fff;
  box-shadow:0 10px 22px -14px rgba(242,131,60,.9);
}
.btn-signal:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 16px 30px -16px rgba(242,131,60,1);}
.btn-brand{background:var(--c-brand);color:#fff;}
.btn-brand:hover{background:var(--c-brand-2);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-outline{background:transparent;border-color:var(--c-brand);color:var(--c-brand);}
.btn-outline:hover{background:#EAF2FB;color:var(--c-brand);transform:translateY(-1px);}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-ink);}
.btn-light:hover{color:var(--c-ink);transform:translateY(-1px);box-shadow:0 14px 30px -18px rgba(0,0,0,.6);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-brand);
}
.text-link:hover{color:var(--c-brand-2);text-decoration:underline;text-underline-offset:4px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;
  border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge-brand{background:#E7EFFA;color:var(--c-brand);}
.badge-accent{background:rgba(18,201,168,.16);color:#0A7A68;}
.badge-signal{background:rgba(242,131,60,.16);color:#B65A1B;}
.badge-soft{background:#F0F6FD;color:var(--c-muted);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-ink);
  border-bottom:2px solid transparent;
  border-image:var(--neon) 1;
}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto;}
.brand:hover{color:#fff;}
.brand-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:7px;
  background:linear-gradient(140deg,#12C9A8,#35C8FF);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border:2px solid rgba(11,18,32,.85);border-radius:4px;
  transform:rotate(45deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:rgba(255,255,255,.62);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;
  padding:0 12px;height:64px;display:inline-flex;align-items:center;
  font-size:15px;font-weight:500;color:rgba(255,255,255,.78);
}
.main-nav a:hover{color:#fff;}
.main-nav a.is-active{color:var(--c-accent);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:12px;height:3px;border-radius:3px;
  background:var(--c-accent);
  box-shadow:0 8px 18px -8px rgba(18,201,168,.8);
  animation:navGlow 2.4s ease-in-out infinite;
}
@keyframes navGlow{0%,100%{opacity:.75;}50%{opacity:1;}}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.85);display:inline-flex;align-items:center;justify-content:center;
  transition:background-color 180ms ease,color 180ms ease;
}
.icon-btn:hover{background:rgba(255,255,255,.18);color:#fff;}
.icon-btn svg{width:18px;height:18px;}
.nav-toggle{
  display:none;
  width:42px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  color:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-panel{
  display:none;
  background:var(--c-ink-2);
  padding:8px 18px 18px;
}
.mobile-panel a{
  display:block;
  padding:12px 14px;
  border-left:3px solid transparent;
  color:rgba(255,255,255,.82);
  font-size:15px;
}
.mobile-panel a:hover,.mobile-panel a.is-active{
  color:#fff;border-left-color:var(--c-accent);background:rgba(18,201,168,.08);
}
.mobile-panel .btn{margin-top:12px;}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--c-ink);
  min-height:clamp(420px,42vw,560px);
  display:flex;
  align-items:center;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center right;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,18,32,.9) 0%,rgba(11,18,32,.78) 38%,rgba(11,18,32,.25) 72%,rgba(11,18,32,.05) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:72px;padding-bottom:64px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--c-accent);margin-bottom:18px;
}
.hero-eyebrow::before{content:"";width:26px;height:2px;background:var(--c-accent);display:block;}
.hero h1{
  max-width:620px;
  font-size:clamp(28px,4.6vw,52px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
}
.hero-sub{
  max-width:560px;
  margin-top:18px;
  font-size:clamp(15px,1.6vw,18px);
  color:rgba(255,255,255,.82);
  line-height:1.8;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:38px;margin-top:44px;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-stats li{display:flex;flex-direction:column;gap:2px;}
.hero-stats .num{font-size:26px;font-weight:700;color:#fff;}
.hero-stats .lbl{font-size:13px;color:rgba(255,255,255,.7);letter-spacing:.06em;}

/* ============ 板块通用 ============ */
.section{padding:var(--sp-section) 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:32px;
}
.section-title{display:flex;align-items:center;gap:12px;}
.section-title::before{
  content:"";width:4px;height:22px;border-radius:3px;background:var(--neon);flex:0 0 4px;
}
.section-title h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.3;font-weight:700;letter-spacing:-.01em;
}
.section-desc{font-size:14px;color:var(--c-muted);margin-top:6px;max-width:640px;}
.section-alt{background:#fff;}

/* ============ 横滑轨道 ============ */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 4px 18px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 320px;
  min-width:320px;
  scroll-snap-align:start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:transform 180ms ease,box-shadow 180ms ease;
}
.rail-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.rail-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.rail-media img{width:100%;height:100%;object-fit:cover;transition:transform 200ms ease;}
.rail-card:hover .rail-media img{transform:scale(1.04);}
.rail-media .badge{position:absolute;left:12px;top:12px;background:rgba(18,201,168,.9);color:#04231D;}
.rail-body{padding:16px 18px 18px;}
.rail-body h3{
  font-size:17px;line-height:1.45;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-body p{
  margin-top:8px;font-size:14px;color:var(--c-muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:14px;padding-top:12px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}
.rail-nav{display:flex;gap:8px;}
.rail-btn{
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-brand);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color 180ms ease,color 180ms ease,background-color 180ms ease;
}
.rail-btn:hover{border-color:var(--c-brand);background:#F0F6FD;}

/* ============ 卡片三档 ============ */
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  height:100%;
  transition:transform 180ms ease,box-shadow 180ms ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 200ms ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media .badge{position:absolute;left:12px;top:12px;background:rgba(18,201,168,.92);color:#04231D;}
.card-body{padding:18px 20px 20px;}
.card-body h3{
  font-size:18px;line-height:1.45;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:16px;padding-top:12px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}
/* 主推大卡 */
.feature-card .card-media{aspect-ratio:16/9;}
.feature-card .card-body{padding:24px 26px 26px;}
.feature-card .card-body h3{font-size:22px;}
.feature-card .card-body p{font-size:15px;-webkit-line-clamp:2;}
/* 榜单 */
.rank-list{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:6px 20px;
  height:100%;
}
.rank-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 4px;
  border-bottom:1px solid var(--c-line);
  transition:background-color 180ms ease;
}
.rank-item:last-child{border-bottom:none;}
.rank-item:hover{background:#F0F6FD;}
.rank-no{
  flex:0 0 30px;
  font-size:17px;font-weight:700;color:var(--c-accent);line-height:1.5;
}
.rank-text h4{font-size:15px;font-weight:600;line-height:1.5;}
.rank-text span{display:block;margin-top:4px;font-size:12.5px;color:var(--c-muted);}
/* 横向宽卡 */
.tile-wide{
  display:grid;
  grid-template-columns:38% 1fr;
  gap:0;
  height:100%;
}
.tile-wide .card-media{aspect-ratio:4/3;height:100%;}
.tile-wide .card-body{padding:20px 22px;}
.tile-wide .card-body h3{font-size:18px;}

/* ============ 选项卡 ============ */
.tab-bar{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-bottom:28px;
}
.tab-bar button{
  height:42px;padding:0 20px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);
  color:var(--c-muted);font-size:14.5px;font-weight:600;
  transition:all 180ms ease;
}
.tab-bar button:hover{border-color:var(--c-brand-2);color:var(--c-brand);}
.tab-bar button.is-active{
  background:var(--c-brand);border-color:var(--c-brand);color:#fff;
  box-shadow:0 10px 22px -16px rgba(23,69,126,1);
}
.tab-panel{display:none;}
.tab-panel.is-active{display:block;}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.news-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform 180ms ease,box-shadow 180ms ease;
  display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.news-card h3{
  font-size:18px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card h3 a{color:var(--c-ink);}
.news-card h3 a:hover{color:var(--c-brand);}
.news-card p{
  margin-top:10px;font-size:14.5px;color:var(--c-muted);line-height:1.8;
  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:18px;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}
.empty-state{
  text-align:center;
  background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card);
  padding:52px 24px;
}
.empty-state .empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;
  background:#F0F6FD;display:flex;align-items:center;justify-content:center;color:var(--c-brand);
}
.empty-state p{font-size:15px;color:var(--c-muted);margin-bottom:18px;}

/* ============ 数据条 ============ */
.stat-band{
  background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
}
.stat-cell{
  padding:34px 24px;
  border-right:1px solid var(--c-line);
  text-align:center;
}
.stat-cell:last-child{border-right:none;}
.stat-num{font-size:32px;font-weight:700;color:var(--c-brand);line-height:1.2;}
.stat-lbl{margin-top:6px;font-size:13.5px;color:var(--c-muted);}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-left:3px solid var(--c-accent);
  border-radius:var(--r-card);overflow:hidden;
  transition:box-shadow 180ms ease;
}
.faq-item:hover{box-shadow:var(--shadow-1);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:18px 22px;background:none;border:none;
  font-size:17px;font-weight:600;color:var(--c-ink);text-align:left;
}
.faq-q .arrow{
  flex:0 0 18px;color:var(--c-brand-2);transition:transform 180ms ease;
}
.faq-item.is-open{background:#F0FBF8;}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg);}
.faq-a{
  display:none;
  padding:0 22px 20px;
  font-size:15px;line-height:1.85;color:var(--c-muted);
}
.faq-item.is-open .faq-a{display:block;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  background:var(--c-ink-2);
  color:#fff;
  padding:clamp(46px,6vw,72px) 0;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--neon);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;color:#fff;}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 订阅 / 搜索 ============ */
.search-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--shadow-1);
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
}
.search-panel .copy{flex:1 1 320px;}
.search-panel h3{font-size:20px;font-weight:700;line-height:1.4;}
.search-panel p{margin-top:8px;font-size:14px;color:var(--c-muted);}
.search-form{display:flex;gap:12px;flex:0 0 auto;}
.search-form input{
  height:48px;width:260px;padding:0 16px;
  border:1px solid var(--c-line);border-radius:10px;background:#fff;
  font-size:15px;color:var(--c-ink);transition:border-color 180ms ease,box-shadow 180ms ease;
}
.search-form input:focus{
  outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(44,107,179,.18);
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--c-ink);
  color:rgba(255,255,255,.72);
  padding:56px 0 0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--neon);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px;}
.footer-col h4{
  font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;color:rgba(255,255,255,.7);
  transition:color 180ms ease,transform 180ms ease;
  display:inline-block;
}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ Foundation 覆盖 ============ */
.grid-container{max-width:var(--container);padding-left:32px;padding-right:32px;}
.button{
  background:var(--c-brand);border-radius:var(--r-btn);font-family:var(--font-sans);
  transition:all 180ms ease;
}
.button:hover{background:var(--c-brand-2);}
.accordion{border:none;background:transparent;margin:0;}
.accordion-title,.accordion-item{border:none;}
.breadcrumbs{border:none;background:transparent;margin:0;}
.card{border:none;}

/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  :root{--container:1140px;}
}
@media screen and (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .header-actions{margin-left:0;}
  .hero h1{font-size:34px;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-cell{border-bottom:1px solid var(--c-line);}
  .stat-cell:nth-child(2n){border-right:none;}
  .stat-cell:nth-child(3),.stat-cell:nth-child(4){border-bottom:none;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .tile-wide{grid-template-columns:44% 1fr;}
}
@media screen and (max-width:768px){
  .container{padding:0 20px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .news-grid{grid-template-columns:1fr;}
  .hero-inner{padding-top:56px;padding-bottom:52px;}
  .hero-stats{gap:26px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .search-form{width:100%;}
  .search-form input{width:100%;flex:1;}
  .search-form{flex-direction:column;}
  .search-form .btn{width:100%;}
}
@media screen and (max-width:640px){
  body{font-size:15.5px;}
  .rail-card{min-width:78vw;flex:0 0 78vw;}
  .tile-wide{grid-template-columns:1fr;}
  .tile-wide .card-media{aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-cell{border-right:none;}
  .stat-cell:nth-child(3){border-bottom:1px solid var(--c-line);}
  .hero-cta .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .card-body h3{font-size:17px;}
  .feature-card .card-body h3{font-size:19px;}
}

/* roulang page: article */
:root{
  --c-ink:#0B1220;
  --c-ink-2:#16213A;
  --c-brand:#17457E;
  --c-brand-2:#2C6BB3;
  --c-accent:#12C9A8;
  --c-signal:#F2833C;
  --c-bg:#F4F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-muted:#5A6B82;
  --neon:linear-gradient(90deg,#12C9A8,#35C8FF);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(16,34,64,.06),0 12px 28px -16px rgba(16,34,64,.22);
  --shadow-2:0 18px 38px -18px rgba(16,34,64,.30);
  --sec-gap:clamp(56px,8vw,104px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-brand-2)}
h1,h2,h3,h4{letter-spacing:-.01em;margin:0;color:var(--c-ink);font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(18,201,168,.35);border-radius:6px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 容器 ---------- */
.grid-container{max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px;width:100%}
@media (min-width:1280px){.grid-container{max-width:1380px}}

/* ---------- 顶栏 ---------- */
.site-header{
  background:var(--c-ink);
  position:sticky;
  top:0;
  z-index:60;
  border-bottom:2px solid transparent;
  border-image:var(--neon) 1;
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:26px;height:26px;border-radius:7px;
  background:var(--neon);
  position:relative;
  box-shadow:0 0 14px -2px rgba(18,201,168,.65);
  flex-shrink:0;
}
.brand-mark::after{
  content:"";
  position:absolute;inset:7px;
  background:var(--c-ink);
  transform:rotate(45deg);
  border-radius:2px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{color:#fff;font-size:17px;font-weight:700;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:rgba(255,255,255,.58);letter-spacing:.16em}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1;min-width:0}
.main-nav a{
  position:relative;
  padding:0 12px;
  height:64px;
  display:inline-flex;
  align-items:center;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.78);
  white-space:nowrap;
}
.main-nav a:hover{color:#fff}
.main-nav a.is-active{color:var(--c-accent)}
.main-nav a.is-active::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:0;height:3px;border-radius:3px 3px 0 0;
  background:var(--c-accent);
  box-shadow:0 8px 18px -8px rgba(18,201,168,.85);
  animation:navGlow 2.4s ease-in-out infinite;
}
@keyframes navGlow{
  0%,100%{opacity:.82}
  50%{opacity:1}
}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  width:38px;height:38px;border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.04);
  color:rgba(255,255,255,.82);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .18s ease;
}
.icon-btn:hover{border-color:rgba(18,201,168,.7);color:#fff}
.nav-toggle{display:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border:none;cursor:pointer;
  font-size:15px;font-weight:600;
  padding:0 20px;height:42px;
  border-radius:var(--r-btn);
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  text-align:center;
}
.btn-primary{
  background:linear-gradient(135deg,#F2833C,#FF9E4F);
  color:#fff;
  box-shadow:0 10px 22px -14px rgba(242,131,60,.9);
}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 16px 28px -16px rgba(242,131,60,.95);filter:brightness(1.06)}
.btn-secondary{
  background:transparent;color:var(--c-brand);
  border:1px solid var(--c-brand);
}
.btn-secondary:hover{background:rgba(23,69,126,.06);color:var(--c-brand);transform:translateY(-1px)}
.btn-ghost{
  background:rgba(255,255,255,.06);
  color:#fff;border:1px solid rgba(255,255,255,.5);
}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--c-ink)}
.btn-light:hover{color:var(--c-ink);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn:disabled,.btn.is-disabled{opacity:.5;pointer-events:none}
.btn-block{width:100%}

/* ---------- 面包屑 ---------- */
.crumbs-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:14px 0;font-size:13.5px;color:var(--c-muted)}
.crumbs a{color:var(--c-muted)}
.crumbs a:hover{color:var(--c-brand)}
.crumbs .sep{color:#B8C6D8}
.crumbs .current{color:var(--c-ink);font-weight:600}

/* ---------- 文章头 ---------- */
.article-shell{padding:clamp(28px,4vw,48px) 0 0}
.article-head{max-width:900px}
.article-head h1{
  font-size:clamp(26px,3.6vw,42px);
  line-height:1.28;
  margin-bottom:18px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 16px;
  font-size:13.5px;color:var(--c-muted);
  padding-bottom:22px;
  border-bottom:1px solid var(--c-line);
}
.badge{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-brand{background:rgba(23,69,126,.09);color:var(--c-brand)}
.badge-accent{background:rgba(18,201,168,.14);color:#0B7F6A}
.meta-tools{margin-left:auto;display:flex;gap:8px}
.meta-tools .icon-btn{border-color:var(--c-line);color:var(--c-muted);background:#fff}
.meta-tools .icon-btn:hover{border-color:var(--c-brand);color:var(--c-brand)}

/* ---------- 封面 ---------- */
.cover-wrap{margin:26px 0 0;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);background:#DDE6F1}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 双栏 ---------- */
.article-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;padding:44px 0 0;align-items:start}
.article-body{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:clamp(22px,3.4vw,44px);
}

/* 正文排版 */
.article-content{max-width:800px;font-size:17px;line-height:1.95;color:#1B2739}
.article-content p{margin:0 0 1.4em}
.article-content h2{
  font-size:clamp(21px,2.4vw,26px);
  line-height:1.4;
  margin:44px 0 16px;
  padding-left:14px;
  position:relative;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:22px;border-radius:2px;background:var(--neon);
}
.article-content h2:first-child{margin-top:0}
.article-content h3{font-size:19px;margin:30px 0 12px;color:var(--c-ink)}
.article-content ul,.article-content ol{margin:0 0 1.4em;padding-left:4px}
.article-content li{position:relative;padding-left:20px;margin-bottom:.55em}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-accent);
}
.article-content ol{counter-reset:li}
.article-content ol li::before{
  counter-increment:li;content:counter(li);
  position:absolute;left:0;top:0;color:var(--c-accent);font-weight:700;font-size:15px;
}
.article-content blockquote{
  margin:0 0 1.4em;padding:16px 20px;
  background:#F4F7FB;border-left:4px solid var(--c-brand);border-radius:0 var(--r-img) var(--r-img) 0;
  font-size:15px;line-height:1.85;color:#33465F;
}
.article-content figure{margin:24px 0}
.article-content img{border-radius:var(--r-img);width:100%}
.article-content figcaption{text-align:center;font-size:13px;color:var(--c-muted);margin-top:8px}
.article-content table{width:100%;border-collapse:collapse;font-size:15px;margin:0 0 1.4em;display:block;overflow-x:auto}
.article-content table th,.article-content table td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-content table thead th{background:#EFF4FB;color:var(--c-ink);font-weight:600}
.article-content table tbody tr:nth-child(even){background:#FAFCFF}
.article-content a{color:var(--c-brand);border-bottom:1px solid rgba(23,69,126,.28)}
.article-content a:hover{border-bottom-color:var(--c-brand)}
.article-empty{
  text-align:center;padding:48px 20px;background:#FAFCFF;border:1px dashed var(--c-line);border-radius:var(--r-card);
}
.article-empty h2{font-size:20px;margin-bottom:10px}
.article-empty p{color:var(--c-muted);font-size:15px;margin-bottom:18px}

/* 正文结束区 */
.article-foot{margin-top:40px;padding-top:26px;border-top:1px solid var(--c-line)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.tag-label{font-size:13px;color:var(--c-muted);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:#F0F6FD;color:var(--c-brand);font-size:12.5px;font-weight:600;
}
.foot-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.foot-nav a{
  display:block;padding:14px 16px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-ink);font-size:14px;transition:all .18s ease;
}
.foot-nav a:hover{border-color:var(--c-brand);color:var(--c-brand);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.foot-nav span{display:block;font-size:12px;color:var(--c-muted);margin-bottom:4px}
.return-link{display:inline-flex;align-items:center;gap:6px;margin-top:22px;font-size:14.5px;font-weight:600}

/* ---------- 侧栏 ---------- */
.side{display:grid;gap:20px;position:sticky;top:88px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:22px;
}
.side-title{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.side-title::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--neon)}
.side-title h3{font-size:17px}
.side-list li{border-bottom:1px solid var(--c-line)}
.side-list li:last-child{border-bottom:none}
.side-list a{display:block;padding:12px 0;font-size:14.5px;line-height:1.65;color:#28374C}
.side-list a:hover{color:var(--c-brand)}
.side-list .sub{display:block;font-size:12.5px;color:var(--c-muted);margin-top:2px}
.side-cta{
  background:var(--c-ink-2);border:none;color:#fff;
  position:relative;overflow:hidden;
}
.side-cta::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--neon)}
.side-cta h3{color:#fff;font-size:18px;margin-bottom:10px}
.side-cta p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;margin-bottom:16px}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-gap) 0 0}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{display:flex;align-items:center;gap:12px;font-size:clamp(21px,2.6vw,28px)}
.section-head h2::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--neon);flex-shrink:0}
.section-more{font-size:14.5px;font-weight:600;white-space:nowrap}
.section-more:hover{text-decoration:underline;text-underline-offset:4px}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D3E0EF}
.card-media{position:relative;overflow:hidden;background:#DDE6F1}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-media .badge{position:absolute;left:12px;top:12px;background:rgba(18,201,168,.9);color:#04231D}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14.5px;line-height:1.75;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--c-muted);padding-top:6px}
.card-meta a{font-weight:600}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-accent);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:none;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-ink);
}
.faq-q .chev{width:20px;height:20px;flex-shrink:0;position:relative;transition:transform .2s ease}
.faq-q .chev::before,.faq-q .chev::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-muted);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-q .chev::before{width:12px;height:2px}
.faq-q .chev::after{width:2px;height:12px;transition:opacity .2s ease}
.faq-item.is-open .faq-q .chev::after{opacity:0}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-item.is-open{background:#F0FBF8}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.85;color:#41556E}

/* ---------- CTA 带 ---------- */
.cta-band{margin-top:var(--sec-gap)}
.cta-inner{
  position:relative;
  background:var(--c-ink-2);
  border-radius:18px;
  padding:clamp(30px,5vw,56px);
  overflow:hidden;
}
.cta-inner::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--neon)}
.cta-inner h2{color:#fff;font-size:clamp(22px,3vw,32px);margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15.5px;max-width:620px;margin-bottom:24px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sec-gap);
  background:var(--c-ink);
  position:relative;
  padding:56px 0 26px;
  color:rgba(255,255,255,.7);
}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--neon)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text strong{font-size:16px}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:360px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);display:inline-block;transition:all .18s ease}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- Foundation 覆盖 ---------- */
.button,button.button{background-color:var(--c-brand);border-radius:var(--r-btn);font-family:var(--font-sans)}
.button:hover,button.button:hover{background-color:var(--c-brand-2)}
.accordion{background:transparent;border:none}
.accordion-title{border:none}
.accordion-content{border:none}
.card{border:none;background:var(--c-surface);margin:0}
table{border-collapse:collapse}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-grid{gap:32px}
}
@media (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .side{position:static}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:absolute;left:0;right:0;top:64px;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--c-ink);
    padding:8px 18px 18px;
    border-bottom:2px solid transparent;
    border-image:var(--neon) 1;
    display:none;
    box-shadow:0 22px 40px -24px rgba(0,0,0,.7);
  }
  .main-nav.is-open{display:flex}
  .main-nav a{height:46px;padding:0 14px;border-left:3px solid transparent}
  .main-nav a.is-active{border-left-color:var(--c-accent);background:rgba(255,255,255,.04)}
  .main-nav a.is-active::after{display:none}
  .header-inner{height:64px}
}
@media (max-width:767px){
  .grid-container{padding-left:18px;padding-right:18px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .article-content{font-size:16.5px}
  .foot-nav{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .cta-actions .btn{width:100%}
  .header-actions .btn-primary{padding:0 14px;font-size:14px;height:38px}
}
@media (max-width:520px){
  .brand-text em{display:none}
  .article-meta .meta-tools{margin-left:0;width:100%}
  .crumbs{font-size:12.5px}
}

/* roulang page: category1 */
:root{
  --c-ink:#0B1220;
  --c-ink-2:#16213A;
  --c-brand:#17457E;
  --c-brand-2:#2C6BB3;
  --c-accent:#12C9A8;
  --c-signal:#F2833C;
  --c-bg:#F4F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-muted:#5A6B82;
  --neon:linear-gradient(90deg,#12C9A8,#35C8FF);
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,34,64,.06),0 12px 28px -16px rgba(16,34,64,.22);
  --shadow-2:0 18px 38px -18px rgba(16,34,64,.30);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --space-section:clamp(56px,8vw,104px);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:none;transition:color 180ms ease,background 180ms ease,transform 180ms ease;}
a:hover{color:var(--c-brand-2);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-0.01em;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(18,201,168,.35);border-radius:6px;}

.grid-container{max-width:1240px;padding-left:32px;padding-right:32px;margin:0 auto;}
@media (min-width:1280px){.grid-container{max-width:1380px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-ink);
}
.site-header::after{content:"";display:block;height:2px;background:var(--neon);}
.header-inner{
  display:flex;align-items:center;gap:26px;height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,#12C9A8,#17457E);
  position:relative;box-shadow:0 0 16px -4px rgba(18,201,168,.75);
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  border:2px solid rgba(255,255,255,.85);
  transform:rotate(45deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{color:#fff;font-size:17px;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:rgba(255,255,255,.58);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:8px;}
.main-nav a{
  position:relative;color:rgba(255,255,255,.78);font-size:15px;font-weight:500;
  padding:20px 2px;transition:color 180ms ease;
}
.main-nav a:hover{color:#fff;}
.main-nav a.is-active{color:var(--c-accent);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:12px;height:3px;border-radius:3px;
  background:var(--c-accent);
  box-shadow:0 8px 18px -8px rgba(18,201,168,.8);
  animation:breathe 2.4s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:1;}50%{opacity:.62;}}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform 180ms ease,box-shadow 180ms ease,filter 180ms ease,background 180ms ease,color 180ms ease,border-color 180ms ease;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-signal{
  background:linear-gradient(135deg,#F2833C,#FF9E4F);color:#fff;
  box-shadow:0 10px 22px -12px rgba(242,131,60,.85);
}
.btn-signal:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(242,131,60,.9);}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.6);color:#fff;
}
.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.12);border-color:#fff;}
.btn-line{
  background:transparent;border-color:var(--c-brand);color:var(--c-brand);
}
.btn-line:hover{background:rgba(23,69,126,.06);color:var(--c-brand-2);border-color:var(--c-brand-2);transform:translateY(-1px);}
.btn-solid{background:var(--c-brand);color:#fff;}
.btn-solid:hover{background:var(--c-brand-2);color:#fff;transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);color:rgba(255,255,255,.85);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background 180ms ease,color 180ms ease,border-color 180ms ease;
}
.icon-btn:hover{background:rgba(18,201,168,.16);color:#fff;border-color:rgba(18,201,168,.6);}
.menu-toggle{display:none;}
.mobile-panel{display:none;background:var(--c-ink);border-top:1px solid rgba(255,255,255,.08);padding:10px 0 18px;}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;color:rgba(255,255,255,.8);font-size:15px;padding:12px 0 12px 14px;
  border-left:3px solid transparent;
}
.mobile-panel a:hover,.mobile-panel a.is-active{color:#fff;border-left-color:var(--c-accent);background:rgba(18,201,168,.08);}
.mobile-panel .btn{margin:12px 0 0 14px;}

@media (max-width:1023px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{height:56px;}
}
@media (max-width:639px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .brand-text em{letter-spacing:.08em;}
}

/* ---------- hero ---------- */
.hero-mini{
  position:relative;
  min-height:320px;
  display:flex;align-items:flex-end;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  color:#fff;
}
.hero-mini::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,18,32,.88) 0%,rgba(11,18,32,.62) 52%,rgba(11,18,32,.22) 100%);
}
.hero-mini .grid-container{position:relative;z-index:2;padding-top:58px;padding-bottom:42px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--c-accent);
  margin-bottom:14px;text-transform:uppercase;
}
.hero-eyebrow::before{content:"";width:26px;height:2px;background:var(--neon);border-radius:2px;}
.hero-mini h1{
  color:#fff;font-size:clamp(26px,4vw,42px);line-height:1.22;max-width:720px;
}
.hero-sub{
  margin-top:14px;max-width:640px;color:rgba(255,255,255,.82);font-size:16px;
}
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  background:transparent;border:none;padding:0;margin:0 0 16px;
  font-size:13px;color:rgba(255,255,255,.65);
}
.breadcrumbs li{color:rgba(255,255,255,.65);font-size:13px;text-transform:none;float:none;}
.breadcrumbs li+li::before{content:"/";color:rgba(255,255,255,.35);margin-right:8px;}
.breadcrumbs a{color:rgba(255,255,255,.82);}
.breadcrumbs a:hover{color:var(--c-accent);}
.breadcrumbs .current{color:#fff;font-weight:600;}
@media (max-width:639px){
  .hero-mini{min-height:220px;}
  .hero-mini .grid-container{padding-top:40px;padding-bottom:28px;}
  .hero-sub{font-size:15px;}
}

/* ---------- section ---------- */
.section{padding:var(--space-section) 0;}
.section-tight{padding:clamp(38px,5vw,64px) 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:18px;
  margin-bottom:30px;flex-wrap:wrap;
}
.section-head h2{
  position:relative;padding-left:16px;font-size:clamp(22px,2.6vw,30px);line-height:1.3;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:var(--neon);
}
.section-head p{margin-top:8px;padding-left:16px;color:var(--c-muted);font-size:15px;max-width:720px;}
.link-more{
  color:var(--c-brand);font-size:15px;font-weight:600;
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.link-more:hover{color:var(--c-brand-2);border-bottom-color:var(--c-brand-2);}

/* ---------- chips ---------- */
.chip-row{
  display:flex;gap:10px;overflow-x:auto;padding:2px 2px 16px;
  scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.chip-row::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;scroll-snap-align:start;
  padding:9px 18px;border-radius:999px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-muted);font-size:14px;font-weight:500;
  cursor:pointer;transition:all 180ms ease;
}
.chip:hover{color:var(--c-brand);border-color:var(--c-brand-2);transform:translateY(-1px);}
.chip.is-active{background:var(--c-brand);color:#fff;border-color:var(--c-brand);box-shadow:0 10px 20px -14px rgba(23,69,126,.9);}

/* ---------- cards ---------- */
.card-c{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;box-shadow:var(--shadow-1);
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
  display:flex;flex-direction:column;
}
.card-c:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D2E0EF;}
.card-media{
  position:relative;aspect-ratio:16/9;background:#E9EFF7;overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease;}
.card-c:hover .card-media img{transform:scale(1.04);}
.card-media .badge{
  position:absolute;left:12px;top:12px;
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:rgba(18,201,168,.92);color:#04261F;}
.badge-brand{background:#E7F0FA;color:var(--c-brand);}
.badge-soft{background:rgba(18,201,168,.14);color:#0C7F6C;}
.card-body{padding:20px 20px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:19px;line-height:1.4;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-sum{
  color:var(--c-muted);font-size:14.5px;line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--c-muted);
}
.card-foot .go{color:var(--c-brand);font-weight:600;}
.card-c:hover .go{color:var(--c-brand-2);}
.num{font-variant-numeric:tabular-nums;letter-spacing:.04em;}
.grid-gap{margin-bottom:20px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;}
.accordion{border:none;background:transparent;margin:0;}
.accordion-item{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);overflow:hidden;margin-bottom:12px;
  box-shadow:var(--shadow-1);transition:background 180ms ease;
}
.accordion-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--neon);
}
.accordion-item.is-active{background:#F0FBF8;}
.accordion-title{
  border:none;background:transparent;padding:18px 22px;font-size:17px;font-weight:600;color:var(--c-ink);
  line-height:1.5;
}
.accordion-title:hover,.accordion-title:focus{background:transparent;color:var(--c-brand);}
.accordion-title::before{color:var(--c-brand);}
.accordion-content{
  border:none;background:transparent;padding:0 22px 20px;color:var(--c-muted);
  font-size:15px;line-height:1.85;
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;background:var(--c-ink-2);color:#fff;border-radius:18px;
  padding:clamp(34px,5vw,56px);overflow:hidden;
}
.cta-band::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--neon);}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,30px);line-height:1.3;max-width:620px;}
.cta-band p{color:rgba(255,255,255,.75);margin-top:12px;max-width:640px;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.related-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);transition:transform 180ms ease,box-shadow 180ms ease;
  display:block;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.related-card strong{display:block;color:var(--c-ink);font-size:17px;margin-bottom:8px;}
.related-card span{color:var(--c-muted);font-size:14px;line-height:1.7;}
@media (max-width:1023px){.related-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:639px){.related-grid{grid-template-columns:1fr;}}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-ink);color:rgba(255,255,255,.75);margin-top:clamp(56px,8vw,100px);
  position:relative;
}
.site-footer::before{content:"";display:block;height:3px;background:var(--neon);}
.site-footer .grid-container{padding-top:56px;padding-bottom:26px;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:360px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.7);font-size:14px;display:inline-block;transition:color 180ms ease,transform 180ms ease;}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:26px;}}

/* ---------- foundation overrides ---------- */
.button,.button.primary,.button.secondary{
  background:var(--c-brand);color:#fff;border-radius:var(--radius-btn);border:none;
  font-family:var(--font-sans);font-size:15px;font-weight:600;padding:13px 22px;
  box-shadow:none;transition:background 180ms ease,transform 180ms ease;
}
.button:hover,.button:focus{background:var(--c-brand-2);color:#fff;transform:translateY(-1px);}
a{color:var(--c-brand);}
a:hover{color:var(--c-brand-2);}
.reveal,.dropdown-pane{border-radius:var(--radius-card);}
.card{border:1px solid var(--c-line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);background:var(--c-surface);}
table{border:1px solid var(--c-line);border-radius:var(--radius-img);}
table thead{background:#EEF4FB;}
table tbody tr:nth-child(even){background:#F8FAFD;}
input,textarea,select{
  border-radius:var(--radius-btn);border:1px solid var(--c-line);height:48px;
  box-shadow:none;font-family:var(--font-sans);
}
input:focus,textarea:focus,select:focus{
  border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(23,69,126,.16);outline:none;
}
ul.accordion{border:none;}

/* roulang page: category3 */
:root{
  --c-ink:#0B1220;
  --c-ink-2:#16213A;
  --c-brand:#17457E;
  --c-brand-2:#2C6BB3;
  --c-accent:#12C9A8;
  --c-signal:#F2833C;
  --c-bg:#F4F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-muted:#5A6B82;
  --neon:linear-gradient(90deg,#12C9A8,#35C8FF);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(16,34,64,.06),0 12px 28px -16px rgba(16,34,64,.22);
  --shadow-2:0 18px 38px -18px rgba(16,34,64,.30);
  --sec-gap:clamp(56px,8vw,104px);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:none;}
a:hover{color:var(--c-brand-2);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-0.01em;color:var(--c-ink);}
h1{font-size:clamp(28px,4.6vw,46px);line-height:1.2;font-weight:700;}
h2{font-size:clamp(24px,3.2vw,32px);line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(18,201,168,.35);border-radius:8px;}

/* 容器 */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
@media (min-width:1280px){ .container{max-width:1320px;} }
@media (max-width:640px){ .container{padding:0 18px;} }

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-ink);
  border-bottom:2px solid transparent;
  border-image:var(--neon) 1;
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{position:relative;width:30px;height:30px;flex:0 0 auto;}
.brand-mark::before{content:"";position:absolute;inset:1px;transform:rotate(45deg);border-radius:7px;background:var(--neon);opacity:.95;}
.brand-mark::after{content:"";position:absolute;inset:10px;transform:rotate(45deg);border-radius:2px;background:var(--c-ink);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{color:#fff;font-size:17px;font-weight:700;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.16em;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.main-nav a{
  position:relative;
  display:block;padding:10px 12px;
  font-size:15px;font-weight:500;
  color:rgba(255,255,255,.78);
  border-radius:8px;
  transition:color 180ms ease,background-color 180ms ease;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.06);}
.main-nav a.is-active{color:var(--c-accent);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:3px;border-radius:3px;
  background:var(--neon);
  box-shadow:0 8px 18px -8px rgba(18,201,168,.8);
  animation:navGlow 2.4s ease-in-out infinite;
}
@keyframes navGlow{0%,100%{opacity:.85;}50%{opacity:1;}}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn-nav{
  display:inline-block;padding:10px 18px;border-radius:var(--r-btn);
  background:linear-gradient(135deg,#F2833C,#FF9E4F);
  color:#fff;font-size:14px;font-weight:600;
  box-shadow:0 10px 22px -12px rgba(242,131,60,.85);
  transition:filter 180ms ease,transform 180ms ease;
}
.btn-nav:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff;}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);
  background:transparent;color:rgba(255,255,255,.8);cursor:pointer;
  transition:border-color 180ms ease,color 180ms ease,background-color 180ms ease;
}
.icon-btn:hover{border-color:rgba(18,201,168,.7);color:#fff;background:rgba(18,201,168,.1);}
.nav-toggle{display:none;}
.mobile-nav{display:none;background:var(--c-ink);border-bottom:2px solid transparent;border-image:var(--neon) 1;}
.mobile-nav.is-open{display:block;}
.mobile-nav a{
  display:block;padding:14px 18px;color:rgba(255,255,255,.82);font-size:15px;
  border-bottom:1px solid rgba(255,255,255,.07);border-left:3px solid transparent;
}
.mobile-nav a.is-active{color:var(--c-accent);border-left-color:var(--c-accent);background:rgba(18,201,168,.08);}

@media (max-width:1023px){
  .main-nav,.header-actions .btn-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:56px;gap:12px;}
  .brand-text em{display:none;}
}

/* 小 Hero */
.page-hero{
  position:relative;
  min-height:320px;
  display:flex;align-items:flex-end;
  padding:36px 0 40px;
  background-image:linear-gradient(90deg,rgba(11,18,32,.88) 0%,rgba(11,18,32,.66) 55%,rgba(11,18,32,.34) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:18px;font-size:13px;color:rgba(255,255,255,.7);}
.crumbs a{color:rgba(255,255,255,.78);}
.crumbs a:hover{color:var(--c-accent);}
.crumbs span.sep{color:rgba(255,255,255,.35);}
.crumbs .current{color:#fff;}
.page-hero h1{color:#fff;max-width:760px;}
.page-hero .hero-lead{margin:14px 0 0;max-width:640px;color:rgba(255,255,255,.78);font-size:16px;}
@media (max-width:640px){
  .page-hero{min-height:200px;padding:24px 0 26px;}
  .page-hero .hero-lead{font-size:15px;}
}

/* 通用区块 */
.section{padding:var(--sec-gap) 0;}
.section--tight{padding-top:calc(var(--sec-gap) * .6);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{display:flex;align-items:center;gap:12px;}
.section-head h2::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--neon);flex:0 0 auto;}
.section-head p{margin:8px 0 0;color:var(--c-muted);font-size:15px;max-width:720px;}
.link-more{font-size:15px;font-weight:600;color:var(--c-brand);white-space:nowrap;border-bottom:1px solid transparent;transition:border-color 180ms ease,color 180ms ease;}
.link-more:hover{color:var(--c-brand-2);border-bottom-color:var(--c-brand-2);}

/* Mosaic 拼贴 */
.grid-x.grid-margin-x{margin-left:-10px;margin-right:-10px;}
.grid-x.grid-margin-x>.cell{margin-left:0;margin-right:0;padding-left:10px;padding-right:10px;}
.mosaic>.cell{margin-bottom:20px;}
.mosaic-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.mosaic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CFE0F1;}
.mosaic-thumb{position:relative;overflow:hidden;background:#DDE7F2;}
.mosaic-thumb.ratio-16-9{aspect-ratio:16/9;}
.mosaic-thumb.ratio-4-3{aspect-ratio:4/3;}
.mosaic-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 260ms ease;}
.mosaic-card:hover .mosaic-thumb img{transform:scale(1.04);}
.badge{
  display:inline-block;padding:4px 12px;border-radius:999px;
  font-size:12px;line-height:1.5;font-weight:600;
}
.badge--float{position:absolute;left:14px;top:14px;background:rgba(18,201,168,.88);color:#06301F;backdrop-filter:saturate(120%);}
.badge--brand{background:#E8F0FA;color:var(--c-brand);}
.badge--neon{background:#E2FBF4;color:#0A7A62;}
.mosaic-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.mosaic-body h3{margin-bottom:10px;}
.mosaic-card--lg .mosaic-body h3{font-size:24px;}
.mosaic-body p{color:var(--c-muted);font-size:15px;line-height:1.75;margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.mosaic-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);}
.mosaic-meta .num{font-variant-numeric:tabular-nums;letter-spacing:.04em;}

/* 浏览步骤 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.step-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--shadow-1);transition:transform 180ms ease,box-shadow 180ms ease;}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.step-no{font-variant-numeric:tabular-nums;letter-spacing:.06em;font-size:26px;font-weight:700;color:var(--c-accent);line-height:1;}
.step-card h3{margin:14px 0 8px;font-size:18px;}
.step-card p{margin:0;color:var(--c-muted);font-size:15px;line-height:1.75;}

/* 指标条 */
.stats{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-1);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));overflow:hidden;}
.stat{padding:28px 24px;border-right:1px solid var(--c-line);}
.stat:last-child{border-right:0;}
.stat strong{display:block;font-size:30px;font-weight:700;color:var(--c-brand);font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.1;}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--c-muted);}

/* 标签 chip */
.chip-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;scrollbar-width:none;}
.chip-row::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink-2);
  transition:border-color 180ms ease,color 180ms ease,background-color 180ms ease;
}
.chip:hover{border-color:var(--c-brand-2);color:var(--c-brand);}
.chip.is-on{background:var(--c-brand);border-color:var(--c-brand);color:#fff;}

/* FAQ */
.faq-list{display:grid;gap:12px;}
.faq-item{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;
  transition:background-color 180ms ease,border-color 180ms ease;
}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--neon);}
.faq-item.is-open{background:#F0FBF8;border-color:#CBEEE5;}
.faq-q{
  width:100%;text-align:left;display:block;background:transparent;border:0;cursor:pointer;
  padding:18px 56px 18px 24px;font-size:17px;font-weight:600;color:var(--c-ink);
  transition:color 180ms ease;
}
.faq-q:hover{color:var(--c-brand);}
.faq-q::after{
  content:"+";position:absolute;right:22px;top:18px;font-size:20px;font-weight:600;
  color:var(--c-accent);transition:transform 180ms ease;
}
.faq-item.is-open .faq-q::after{content:"–";}
.faq-a{padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--c-muted);}

/* CTA 带 */
.cta-band{position:relative;background:var(--c-ink-2);color:#fff;padding:clamp(44px,6vw,72px) 0;overflow:hidden;}
.cta-band::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--neon);}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{color:#fff;}
.cta-band p{margin:12px 0 0;color:rgba(255,255,255,.72);max-width:620px;font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:filter 180ms ease,transform 180ms ease,box-shadow 180ms ease,background-color 180ms ease,color 180ms ease,border-color 180ms ease;
}
.btn-primary{background:linear-gradient(135deg,#F2833C,#FF9E4F);color:#fff;box-shadow:0 14px 26px -16px rgba(242,131,60,.9);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff;box-shadow:0 18px 32px -16px rgba(242,131,60,.95);}
.btn-outline{background:transparent;border-color:var(--c-brand);color:var(--c-brand);}
.btn-outline:hover{background:#EAF2FB;color:var(--c-brand);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-ink);}
.btn-light:hover{background:#F0F6FD;color:var(--c-ink);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}

/* 相关分类互链 */
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.related-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CFE0F1;}
.related-card strong{display:block;font-size:17px;color:var(--c-ink);margin-bottom:8px;}
.related-card span{display:block;font-size:14px;color:var(--c-muted);line-height:1.7;}
.related-card em{display:inline-block;margin-top:14px;font-style:normal;font-size:14px;font-weight:600;color:var(--c-brand-2);}

/* 页脚 */
.site-footer{position:relative;background:var(--c-ink);color:rgba(255,255,255,.72);padding:64px 0 26px;}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--neon);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:rgba(255,255,255,.5);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;max-width:420px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);transition:color 180ms ease,transform 180ms ease;display:inline-block;}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:44px;padding-top:20px;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);
}

/* 基础覆盖 Foundation 默认味道 */
button,.button{background-image:none;border-radius:var(--r-btn);font-family:inherit;}
a.button{background-image:none;}
.grid-container{max-width:1240px;padding-left:32px;padding-right:32px;}
.grid-container.full{max-width:100%;}
@media (max-width:640px){ .grid-container{padding-left:18px;padding-right:18px;} }

@media (max-width:1279px){
  .steps,.related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--c-line);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  .steps,.related-grid,.stats,.footer-grid{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--c-line);}
  .stat:last-child{border-bottom:0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .mosaic-card--lg .mosaic-body h3{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .btn{width:100%;}
  .cta-actions{gap:10px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  --c-ink:#0B1220;
  --c-ink-2:#16213A;
  --c-brand:#17457E;
  --c-brand-2:#2C6BB3;
  --c-accent:#12C9A8;
  --c-signal:#F2833C;
  --c-bg:#F4F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-muted:#5A6B82;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-base:0 1px 2px rgba(16,34,64,.06),0 12px 28px -16px rgba(16,34,64,.22);
  --shadow-hover:0 18px 38px -18px rgba(16,34,64,.30);
  --neon-line:linear-gradient(90deg,#12C9A8,#35C8FF);
  --section-gap:clamp(56px,8vw,104px);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--c-brand);text-decoration:none;transition:color 180ms ease;}
a:hover{color:var(--c-brand-2);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--c-ink);}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(18,201,168,.35);border-radius:6px;}
.grid-container{max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px;}
@media (min-width:1280px){.grid-container{max-width:1380px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-ink);
  border-bottom:2px solid transparent;
  border-image:var(--neon-line) 1;
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:#fff;}
.brand:hover{color:#fff;}
.brand-mark{
  width:26px;height:26px;flex:0 0 auto;border-radius:7px;
  background:linear-gradient(135deg,var(--c-accent),#35C8FF);
  transform:rotate(45deg);
  box-shadow:0 0 0 1px rgba(255,255,255,.18),0 0 18px -4px rgba(18,201,168,.9);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border-radius:3px;background:var(--c-ink);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:rgba(255,255,255,.6);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:8px;flex:1 1 auto;}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;
  color:rgba(255,255,255,.78);padding:20px 2px;
}
.main-nav a:hover{color:#fff;}
.main-nav a.is-active{color:var(--c-accent);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:3px;border-radius:3px;
  background:var(--c-accent);
  box-shadow:0 8px 18px -8px rgba(18,201,168,.8);
  animation:navPulse 2.4s ease-in-out infinite;
}
@keyframes navPulse{0%,100%{opacity:1;}50%{opacity:.62;}}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.82);display:inline-flex;align-items:center;justify-content:center;
  transition:all 180ms ease;
}
.icon-btn:hover{background:rgba(255,255,255,.14);color:#fff;}
.nav-toggle{display:none;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#fff;
  width:38px;height:38px;border-radius:var(--radius-btn);align-items:center;justify-content:center;}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform 180ms ease,box-shadow 180ms ease,filter 180ms ease,background 180ms ease,color 180ms ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);}
.btn:disabled,.btn.is-disabled{opacity:.5;pointer-events:none;}
.btn-signal{
  background:linear-gradient(135deg,#F2833C,#FF9E4F);color:#fff;
  box-shadow:0 12px 26px -16px rgba(242,131,60,.9);
}
.btn-signal:hover{filter:brightness(1.06);box-shadow:0 18px 34px -18px rgba(242,131,60,.95);color:#fff;}
.btn-outline{
  background:transparent;border-color:var(--c-brand);color:var(--c-brand);
}
.btn-outline:hover{background:rgba(23,69,126,.06);color:var(--c-brand-2);border-color:var(--c-brand-2);}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.5);color:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-light{background:#fff;color:var(--c-ink);box-shadow:var(--shadow-base);}
.btn-light:hover{color:var(--c-brand);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 分类页小 Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  min-height:320px;display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-radius:0 0 18px 18px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,18,32,.88) 0%,rgba(11,18,32,.72) 46%,rgba(11,18,32,.28) 100%);
}
.cat-hero-inner{position:relative;z-index:2;padding:38px 0 44px;width:100%;}
.crumbs{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.66);margin-bottom:16px;}
.crumbs a{color:rgba(255,255,255,.8);}
.crumbs a:hover{color:var(--c-accent);}
.crumbs span.sep{color:rgba(255,255,255,.35);}
.crumbs span.current{color:#fff;}
.cat-hero h1{
  color:#fff;font-size:clamp(28px,4.2vw,44px);line-height:1.22;font-weight:700;
  max-width:760px;
}
.cat-hero .lead{
  margin-top:14px;max-width:700px;font-size:16px;line-height:1.8;
  color:rgba(255,255,255,.78);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-tags .tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(18,201,168,.16);color:#8CF3DF;border:1px solid rgba(18,201,168,.36);
}

/* ============ 板块与标题 ============ */
.section{padding-top:var(--section-gap);}
.section-head{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  margin-bottom:28px;
}
.section-title{display:flex;align-items:center;gap:12px;}
.section-title::before{
  content:"";width:4px;height:22px;border-radius:3px;background:var(--neon-line);flex:0 0 auto;
}
.section-title h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;}
.section-title .sub{font-size:14px;color:var(--c-muted);margin-left:6px;}
.link-more{font-size:14px;font-weight:600;color:var(--c-brand);display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{text-decoration:underline;text-underline-offset:5px;}

/* ============ 概览数据条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-base);overflow:hidden;margin-top:-34px;position:relative;z-index:5;
}
.stat-strip .stat{padding:22px 24px;border-right:1px solid var(--c-line);}
.stat-strip .stat:last-child{border-right:none;}
.stat b{
  display:block;font-size:26px;font-weight:700;color:var(--c-brand);
  font-variant-numeric:tabular-nums;letter-spacing:.04em;line-height:1.2;
}
.stat span{font-size:13px;color:var(--c-muted);}

/* ============ 分类 2：左图右文横向列表 ============ */
.media-list{display:flex;flex-direction:column;gap:24px;}
.media-object.media-row{
  display:flex;align-items:stretch;gap:24px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-base);padding:20px;
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.media-object.media-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE0F5;}
.media-thumb{
  position:relative;flex:0 0 38%;max-width:38%;
  aspect-ratio:4/3;border-radius:var(--radius-img);overflow:hidden;background:#DCE7F5;
}
.media-thumb img{
  width:100%;height:100%;object-fit:cover;border-radius:0;
  transition:transform 300ms ease;
}
.media-row:hover .media-thumb img{transform:scale(1.04);}
.media-thumb .badge{
  position:absolute;top:12px;left:12px;
}
.media-body{
  flex:1 1 62%;display:flex;flex-direction:column;gap:10px;justify-content:center;min-width:0;
}
.media-body h3{
  font-size:20px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.media-body h3 a{color:var(--c-ink);}
.media-body h3 a:hover{color:var(--c-brand);}
.media-body p{
  font-size:15px;color:var(--c-muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.media-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--c-muted);padding-top:4px;border-top:1px dashed var(--c-line);margin-top:auto;
}
.media-meta .dot{width:3px;height:3px;border-radius:50%;background:#C4D2E4;display:inline-block;}
.media-meta .num{font-variant-numeric:tabular-nums;letter-spacing:.03em;color:var(--c-brand);font-weight:600;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:6px 11px;border-radius:999px;font-weight:600;
  background:rgba(23,69,126,.10);color:var(--c-brand);white-space:nowrap;
}
.badge-accent{background:rgba(18,201,168,.18);color:#0A8C74;}
.badge-ink{background:rgba(11,18,32,.06);color:var(--c-ink-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion.faq-accordion{
  background:transparent;border:none;margin:0;
}
.faq-accordion .accordion-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid transparent;
  border-radius:var(--radius-card);box-shadow:var(--shadow-base);
  margin-bottom:14px;overflow:hidden;
  transition:border-color 180ms ease,box-shadow 180ms ease;
}
.faq-accordion .accordion-item:hover{border-left-color:var(--c-accent);}
.faq-accordion .accordion-item.is-active{border-left-color:var(--c-accent);}
.faq-accordion .accordion-title{
  border:none;background:transparent;padding:20px 52px 20px 22px;
  font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.55;position:relative;
}
.faq-accordion .accordion-title:hover{background:#F8FBFF;color:var(--c-brand);}
.faq-accordion .accordion-title::before{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--c-brand);transition:transform 180ms ease;
}
.faq-accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg);}
.faq-accordion .accordion-content{
  padding:0 22px 22px 22px;border:none;background:#F0FBF8;
  color:var(--c-muted);font-size:15px;line-height:1.85;
}
.faq-accordion .accordion-content p{margin:0;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;background:var(--c-ink-2);border-radius:18px;overflow:hidden;
  padding:clamp(34px,5vw,56px) clamp(24px,4vw,52px);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--neon-line);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,201,168,.22),transparent 66%);
}
.cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.32;}
.cta-copy p{color:rgba(255,255,255,.72);margin-top:12px;font-size:15px;line-height:1.8;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 相关分类互链 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-base);
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE0F5;}
.rel-card .rel-top{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.rel-card .rel-icon{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(23,69,126,.08);color:var(--c-brand);font-size:15px;
}
.rel-card h3{font-size:17px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.rel-card p{font-size:14px;color:var(--c-muted);line-height:1.75;}
.rel-card .rel-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--c-brand);}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:var(--section-gap);background:var(--c-ink);color:rgba(255,255,255,.72);
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--neon-line);}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding:56px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:24px;height:24px;}
.footer-brand .brand-text strong{color:#fff;font-size:16px;}
.footer-brand .brand-text em{color:rgba(255,255,255,.55);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:360px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.01em;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{
  font-size:14px;color:rgba(255,255,255,.7);display:inline-block;
  transition:color 180ms ease,transform 180ms ease;
}
.footer-col ul li a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;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){
  .grid-container{padding-left:24px;padding-right:24px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .main-nav{gap:16px;}
  .main-nav a{font-size:14px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-strip .stat:nth-child(2){border-right:none;}
  .stat-strip .stat:nth-child(1),.stat-strip .stat:nth-child(2){border-bottom:1px solid var(--c-line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .header-inner{height:56px;gap:14px;}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:flex-start;gap:0;
    background:var(--c-ink);padding:8px 18px 16px;border-bottom:2px solid var(--c-accent);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{
    width:100%;padding:14px 0 14px 14px;border-left:3px solid transparent;font-size:15px;
  }
  .main-nav a.is-active{border-left-color:var(--c-accent);}
  .main-nav a.is-active::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand-text strong{font-size:15px;}
  .cat-hero{min-height:200px;border-radius:0 0 14px 14px;}
  .cat-hero-inner{padding:26px 0 30px;}
  .cat-hero .lead{font-size:15px;}
  .stat-strip{grid-template-columns:1fr;margin-top:-22px;}
  .stat-strip .stat{border-right:none;border-bottom:1px solid var(--c-line);padding:18px 20px;}
  .stat-strip .stat:last-child{border-bottom:none;}
  .media-object.media-row{flex-direction:column;gap:16px;padding:16px;}
  .media-thumb{flex:1 1 auto;max-width:100%;width:100%;}
  .media-body{flex:1 1 auto;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 30px;}
  .footer-bottom{flex-direction:column;gap:10px;}
}
@media (max-width:519px){
  .brand-text em{display:none;}
  .media-body h3{font-size:18px;}
  .faq-accordion .accordion-title{font-size:16px;padding:16px 46px 16px 18px;}
}

/* ============ Foundation 覆盖层 ============ */
.button,button.button{
  background:var(--c-brand);border-radius:var(--radius-btn);border:none;
  font-family:var(--font-sans);font-weight:600;transition:all 180ms ease;
}
.button:hover,button.button:hover{background:var(--c-brand-2);}
.button.secondary,.button.hollow{
  background:transparent;border:1px solid var(--c-brand);color:var(--c-brand);
}
a{color:var(--c-brand);}
a:hover{color:var(--c-brand-2);}
.accordion{border:none;background:transparent;}
.accordion-title{border:none;}
input,textarea,select{border-radius:var(--radius-btn);border:1px solid var(--c-line);box-shadow:none;}
input:focus,textarea:focus,select:focus{border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(23,69,126,.12);}
.callout{border-radius:var(--radius-card);border:1px solid var(--c-line);}

/* roulang page: category4 */
:root{
  --c-ink:#0B1220;
  --c-ink-2:#16213A;
  --c-brand:#17457E;
  --c-brand-2:#2C6BB3;
  --c-accent:#12C9A8;
  --c-signal:#F2833C;
  --c-bg:#F4F7FB;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-muted:#5A6B82;
  --c-soft:#F0F6FD;
  --c-soft-cyan:#F0FBF8;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-base:0 1px 2px rgba(16,34,64,.06),0 12px 28px -16px rgba(16,34,64,.22);
  --sh-hover:0 18px 38px -18px rgba(16,34,64,.30);
  --neon:linear-gradient(90deg,#12C9A8,#35C8FF);
  --sec-gap:clamp(56px,8vw,104px);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-brand-2);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700;line-height:1.3;}
p{margin:0 0 1em;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(18,201,168,.35);border-radius:6px;}

.grid-container{max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px;width:100%;}
@media screen and (min-width:1280px){.grid-container{max-width:1380px;}}
@media screen and (max-width:640px){.grid-container{padding-left:18px;padding-right:18px;}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--c-ink);}
.site-header::after{content:"";display:block;height:2px;background:var(--neon);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:64px;}
.brand{display:flex;align-items:center;gap:11px;color:#fff;flex:0 0 auto;}
.brand:hover{color:#fff;}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:8px;
  background:
    linear-gradient(135deg,#12C9A8 0 50%,transparent 50% 100%),
    linear-gradient(315deg,#35C8FF 0 50%,transparent 50% 100%),
    var(--c-brand);
  box-shadow:0 0 0 1px rgba(255,255,255,.14),0 6px 16px -8px rgba(18,201,168,.9);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;
  border:1.5px solid rgba(255,255,255,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:rgba(255,255,255,.62);letter-spacing:.08em;}

.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;}
.main-nav a{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;font-weight:500;
  color:rgba(255,255,255,.78);border-radius:8px;white-space:nowrap;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.06);}
.main-nav a.is-active{color:var(--c-accent);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:3px;border-radius:3px;
  background:var(--c-accent);
  box-shadow:0 8px 18px -8px rgba(18,201,168,.8);
  animation:navPulse 2.4s ease-in-out infinite;
}
@keyframes navPulse{0%,100%{opacity:.82;}50%{opacity:1;}}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  background:transparent;color:rgba(255,255,255,.8);font-size:15px;display:inline-flex;
  align-items:center;justify-content:center;transition:all .18s ease;
}
.icon-btn:hover{color:#fff;border-color:rgba(18,201,168,.6);background:rgba(18,201,168,.10);}
.nav-toggle{display:none;}

.mobile-nav,.search-panel{display:none;}
.mobile-nav{background:var(--c-ink-2);border-top:1px solid rgba(255,255,255,.08);}
.mobile-nav.is-open{display:block;}
.mobile-nav a{
  display:block;color:rgba(255,255,255,.82);padding:13px 18px;font-size:15px;
  border-left:3px solid transparent;border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-nav a:hover,.mobile-nav a.is-active{
  color:var(--c-accent);border-left-color:var(--c-accent);background:rgba(18,201,168,.08);
}
.search-panel{background:var(--c-ink-2);border-top:1px solid rgba(255,255,255,.08);padding:14px 0;}
.search-panel.is-open{display:block;}
.search-form{display:flex;gap:10px;}
.search-form input{
  flex:1 1 auto;height:48px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:15px;
}
.search-form input::placeholder{color:rgba(255,255,255,.45);}
.search-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(18,201,168,.28);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;transition:all .18s ease;white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,#F2833C,#FF9E4F);color:#fff;box-shadow:0 10px 24px -14px rgba(242,131,60,.95);}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 16px 30px -16px rgba(242,131,60,1);}
.btn-outline{background:transparent;border-color:var(--c-brand);color:var(--c-brand);}
.btn-outline:hover{background:var(--c-brand);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-ink);}
.btn-light:hover{color:var(--c-ink);transform:translateY(-1px);box-shadow:var(--sh-hover);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;min-height:320px;display:flex;align-items:flex-end;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,18,32,.88) 0%,rgba(11,18,32,.62) 55%,rgba(11,18,32,.30) 100%);
}
.page-hero .hero-inner{position:relative;z-index:2;padding:44px 0 40px;max-width:820px;}
.breadcrumbs-custom{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.62);margin-bottom:16px;
}
.breadcrumbs-custom a{color:rgba(255,255,255,.78);}
.breadcrumbs-custom a:hover{color:var(--c-accent);}
.breadcrumbs-custom .sep{color:rgba(255,255,255,.35);}
.breadcrumbs-custom .current{color:#fff;}
.page-hero h1{
  font-size:clamp(28px,4.6vw,44px);color:#fff;margin-bottom:14px;
}
.page-hero h1 span{color:var(--c-accent);}
.hero-lead{font-size:16px;color:rgba(255,255,255,.82);max-width:620px;margin:0;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.hero-tags .tag{
  font-size:12px;padding:5px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.86);background:rgba(255,255,255,.06);
}

/* ---------- sections ---------- */
.section{padding-top:var(--sec-gap);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.section-title{display:flex;align-items:center;gap:12px;}
.section-title::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--neon);flex:0 0 4px;}
.section-title h2{font-size:clamp(22px,2.6vw,30px);}
.section-more{font-size:14px;font-weight:600;color:var(--c-brand);white-space:nowrap;}
.section-more:hover{text-decoration:underline;text-underline-offset:4px;}
.section-intro{color:var(--c-muted);font-size:15px;max-width:760px;margin:-8px 0 26px;}

/* ---------- overview cards ---------- */
.overview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.ov-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-base);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease;
}
.ov-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.ov-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.ov-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .18s ease;}
.ov-card:hover .thumb img{transform:scale(1.04);}
.ov-card .badge{position:absolute;left:12px;top:12px;}
.ov-card .body{padding:18px 20px 22px;}
.ov-card h3{font-size:18px;margin-bottom:8px;}
.ov-card p{font-size:14px;color:var(--c-muted);margin:0;}
.badge{
  display:inline-flex;align-items:center;font-size:12px;line-height:1;
  padding:6px 11px;border-radius:999px;font-weight:600;
}
.badge-brand{background:#E7F0FA;color:var(--c-brand);}
.badge-cyan{background:rgba(18,201,168,.16);color:#0E8F79;}
.badge-signal{background:rgba(242,131,60,.16);color:#B85A19;}

/* ---------- steps + sticky toc ---------- */
.steps-layout{display:grid;grid-template-columns:8fr 4fr;gap:28px;align-items:start;}
.step-list{display:flex;flex-direction:column;gap:16px;}
.step-item{
  display:flex;gap:20px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-base);padding:24px 26px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#CFDEEE;}
.step-num{
  font-family:var(--font-sans);font-variant-numeric:tabular-nums;letter-spacing:.06em;
  font-size:30px;font-weight:700;color:var(--c-accent);line-height:1;flex:0 0 62px;
  padding-top:4px;
}
.step-body{flex:1 1 auto;}
.step-body h3{font-size:19px;margin-bottom:10px;}
.step-body p{font-size:15px;color:var(--c-muted);margin:0 0 14px;}
.step-meta{display:flex;flex-wrap:wrap;gap:8px;}

.toc-col{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px;}
.panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-base);padding:22px 22px 24px;
}
.panel h3{font-size:17px;margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.panel h3::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--neon);}
.toc-list{display:flex;flex-direction:column;}
.toc-list a{
  display:flex;gap:12px;align-items:baseline;padding:10px 10px;border-radius:8px;
  font-size:14px;color:#31456A;transition:all .18s ease;
}
.toc-list a span{font-variant-numeric:tabular-nums;color:var(--c-accent);font-weight:700;font-size:12px;letter-spacing:.06em;}
.toc-list a:hover{background:var(--c-soft);color:var(--c-brand);transform:translateX(3px);}
.panel-cta{background:var(--c-ink-2);border-color:var(--c-ink-2);color:#fff;}
.panel-cta h3{color:#fff;}
.panel-cta p{font-size:14px;color:rgba(255,255,255,.74);margin-bottom:16px;}
.quick-list{display:flex;flex-direction:column;gap:12px;}
.quick-item{display:flex;gap:12px;align-items:center;}
.quick-item img{width:64px;height:48px;object-fit:cover;flex:0 0 64px;border-radius:10px;}
.quick-item .qt{font-size:14px;font-weight:600;line-height:1.5;}
.quick-item .qs{font-size:12px;color:var(--c-muted);}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;}
.accordion{border:none;background:transparent;margin:0;}
.accordion .accordion-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-accent);
  border-radius:var(--r-card);box-shadow:var(--sh-base);margin-bottom:12px;overflow:hidden;
}
.accordion .accordion-title{
  font-size:17px;font-weight:600;color:var(--c-ink);padding:18px 52px 18px 22px;
  border:none;position:relative;background:transparent;
}
.accordion .accordion-title:hover{background:var(--c-soft);}
.accordion .accordion-title::before{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--c-brand);transition:transform .18s ease;
}
.accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg);}
.accordion .accordion-content{padding:0 22px 20px;border:none;color:var(--c-muted);font-size:15px;line-height:1.85;}
.accordion .accordion-item.is-active{background:var(--c-surface);}
.accordion .accordion-item.is-active .accordion-content{background:var(--c-soft-cyan);padding-top:16px;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;background:var(--c-ink-2);border-radius:18px;overflow:hidden;
  padding:clamp(34px,5vw,56px);color:#fff;display:flex;flex-wrap:wrap;gap:26px;
  align-items:center;justify-content:space-between;
}
.cta-band::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--neon);}
.cta-band h2{font-size:clamp(22px,3vw,30px);margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.76);font-size:15px;margin:0;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.related-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-base);padding:22px 20px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.related-card .ri{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:#E7F0FA;color:var(--c-brand);font-size:16px;margin-bottom:14px;
}
.related-card h3{font-size:16px;margin-bottom:8px;color:var(--c-ink);}
.related-card p{font-size:13px;color:var(--c-muted);margin:0;}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--c-ink);color:rgba(255,255,255,.7);margin-top:var(--sec-gap);}
.site-footer::before{content:"";display:block;height:3px;background:var(--neon);}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding:56px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:rgba(255,255,255,.55);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;max-width:380px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);display:inline-block;transition:all .18s ease;}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media screen and (max-width:1279px){
  .steps-layout{grid-template-columns:7fr 5fr;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
}
@media screen and (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{min-height:56px;}
  .page-hero{min-height:280px;}
  .steps-layout{grid-template-columns:1fr;}
  .toc-col{position:static;}
  .overview-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .toc-list{display:grid;grid-template-columns:1fr 1fr;}
}
@media screen and (max-width:640px){
  .page-hero{min-height:200px;}
  .page-hero .hero-inner{padding:30px 0 26px;}
  .page-hero h1{font-size:26px;}
  .overview-grid{grid-template-columns:1fr;}
  .step-item{padding:20px 18px;gap:14px;}
  .step-num{font-size:24px;flex:0 0 46px;}
  .toc-list{grid-template-columns:1fr;}
  .cta-band{padding:28px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px;}
  .footer-bottom{flex-direction:column;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
}