/* roulang page: index */
:root{
  --c-primary:#0E7C86;
  --c-primary-600:#12A0AC;
  --c-primary-400:#2FC2CE;
  --c-primary-50:#E6F4F6;
  --c-accent:#FF6B2C;
  --c-accent-600:#E85A1C;
  --c-accent-50:#FFF1E9;
  --c-ink:#0B1418;
  --c-text:#16232A;
  --c-text-2:#4A5C61;
  --c-text-3:#83979C;
  --c-bg:#F2F6F7;
  --c-surface:#FFFFFF;
  --c-surface-2:#E9F1F2;
  --c-line:#D6E3E5;
  --c-success:#1F9E6B;
  --c-danger:#D93B3B;
  --r-sm:6px; --r-md:10px; --r-lg:16px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,20,24,.06);
  --sh-2:0 14px 30px -18px rgba(11,20,24,.22);
  --font-base:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --bs-body-font-family:var(--font-base);
  --bs-body-color:var(--c-text);
  --bs-body-bg:var(--c-bg);
  --bs-border-radius:10px;
  --bs-border-color:var(--c-line);
  --bs-link-color:var(--c-primary);
  --bs-link-hover-color:var(--c-primary-600);
  --bs-primary:var(--c-primary);
  --bs-primary-rgb:14,124,134;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-600)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
section[id],div[id]{scroll-margin-top:96px}
.tnum{font-variant-numeric:tabular-nums}
.container{max-width:1180px;padding-left:18px;padding-right:18px}
.section{padding:72px 0;border-top:1px solid var(--c-line)}
.section--alt{background:var(--c-surface-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section--plain{background:var(--c-surface)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.4px;
  color:var(--c-primary);
  background:var(--c-primary-50);
  border-radius:var(--r-pill);
  padding:5px 14px;
}
.eyebrow i{font-size:12px}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head--wide{max-width:820px}
.sec-title{
  font-size:clamp(23px,3vw,32px);
  line-height:1.35;font-weight:700;letter-spacing:.3px;
}
.sec-title::after{
  content:"";display:block;width:40px;height:3px;border-radius:2px;
  background:var(--c-primary);margin-top:12px;
}
.sec-sub{margin-top:16px;font-size:16px;color:var(--c-text-2);max-width:760px}
.num-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:var(--r-sm);
  background:rgba(14,124,134,.10);
  color:var(--c-primary);font-weight:700;font-size:14px;
  font-variant-numeric:tabular-nums;
}
/* ---------- 顶部信息条 ---------- */
.site-topbar{
  background:var(--c-ink);color:rgba(255,255,255,.90);
  font-size:13px;height:36px;display:flex;align-items:center;
}
.site-topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.3px;white-space:nowrap}
.topbar-note{color:rgba(255,255,255,.62);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:14px;white-space:nowrap}
.topbar-link{color:rgba(255,255,255,.86);font-size:13px}
.topbar-link:hover{color:var(--c-primary-400)}
.btn-topbar{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-primary);color:#fff;font-size:13px;font-weight:600;
  border-radius:var(--r-sm);padding:4px 12px;line-height:1.6;
}
.btn-topbar:hover{background:var(--c-primary-600);color:#fff}
/* ---------- 主导航 ---------- */
.site-nav{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  box-shadow:0 1px 0 rgba(11,20,24,.02);
}
.site-nav .navbar{padding:0;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;padding:0;margin-right:24px}
.brand-mark{
  width:36px;height:36px;border-radius:var(--r-sm);
  background:linear-gradient(180deg,var(--c-primary-600),var(--c-primary));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:16px;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:18px;font-weight:800;color:var(--c-ink);letter-spacing:.4px}
.brand-desc{font-size:11px;color:var(--c-text-3);letter-spacing:.6px}
.nav-c-list{display:flex;align-items:center;gap:4px}
.nav-c-link{
  position:relative;display:inline-block;
  font-size:15px;font-weight:600;color:var(--c-text);
  padding:10px 2px;margin:0 13px;
}
.nav-c-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s ease;
}
.nav-c-link:hover{color:var(--c-primary)}
.nav-c-link:hover::after{transform:scaleX(1)}
.nav-c-link.active{color:var(--c-primary);font-weight:700}
.nav-c-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;border-radius:8px;
  padding:11px 22px;border:1.5px solid transparent;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  cursor:pointer;line-height:1.5;
}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.btn-primary-c{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary-c:hover{background:var(--c-primary-600);color:#fff;box-shadow:var(--sh-2)}
.btn-outline-c{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline-c:hover{background:rgba(14,124,134,.08);color:var(--c-primary)}
.btn-ghost-c{background:transparent;color:var(--c-accent-600);font-weight:700;padding:8px 0}
.btn-ghost-c i{transition:transform .18s ease}
.btn-ghost-c:hover{color:var(--c-accent)}
.btn-ghost-c:hover i{transform:translateX(4px)}
.btn-sm-c{padding:8px 16px;font-size:14px}
.navbar-toggler{border:1px solid var(--c-line);border-radius:var(--r-sm);padding:6px 10px}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(14,124,134,.15)}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%230E7C86' stroke-linecap='round' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(180deg,var(--c-bg) 0%,var(--c-surface) 100%);
  padding:64px 0 0;position:relative;
}
.hero-inner{padding-bottom:64px}
.hero-eyebrow{margin-bottom:20px}
.hero h1{
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.28;font-weight:800;letter-spacing:.5px;
  margin-bottom:18px;
}
.hero-sub{
  font-size:18px;line-height:1.85;color:var(--c-text-2);
  max-width:620px;margin-bottom:26px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.mini-tag{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-pill);padding:6px 14px;
  font-size:13px;font-weight:600;color:var(--c-text-2);
}
.mini-tag i{color:var(--c-primary);font-size:12px}
.hero-visual{position:relative}
.hero-figure{
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  aspect-ratio:16/10;background:var(--c-surface-2);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-badge{
  position:absolute;left:-14px;bottom:26px;
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-2);padding:12px 18px;
  border-left:3px solid var(--c-accent);
}
.hero-badge strong{display:block;font-size:20px;color:var(--c-ink);line-height:1.3;font-variant-numeric:tabular-nums}
.hero-badge span{font-size:12px;color:var(--c-text-3)}
.hero-rink{
  height:6px;width:100%;
  background-image:repeating-linear-gradient(115deg,rgba(14,124,134,.22) 0 12px,rgba(14,124,134,.05) 12px 26px);
}
/* ---------- 卖点 2+1 ---------- */
.feature-main{
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:28px;height:100%;
  transition:box-shadow .18s ease,transform .18s ease;
}
.feature-main:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.feature-main h3{font-size:20px;margin-bottom:12px}
.feature-main p{color:var(--c-text-2);font-size:15px;margin-bottom:16px}
.feature-figure{border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;background:var(--c-surface-2);margin-bottom:18px}
.feature-figure img{width:100%;height:100%;object-fit:cover}
.feature-side{
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:22px;height:100%;
  transition:box-shadow .18s ease,transform .18s ease;
}
.feature-side:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.feature-side .num-badge{margin-bottom:14px}
.feature-side h3{font-size:17px;margin-bottom:8px}
.feature-side p{font-size:14px;color:var(--c-text-2);line-height:1.75;margin:0}
.check-list{margin-top:6px}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:var(--c-text-2);line-height:1.75;padding:5px 0;
}
.check-list li i{color:var(--c-primary);font-size:13px;margin-top:8px;flex:0 0 auto}
/* ---------- 演示 Tab ---------- */
.demo-tabs{
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:10px;height:100%;
}
.demo-tab-btn{
  display:flex;align-items:center;gap:12px;width:100%;
  text-align:left;background:transparent;border:0;border-radius:var(--r-sm);
  padding:16px 16px;color:var(--c-text-2);font-size:15px;font-weight:600;
  transition:background-color .18s ease,color .18s ease;
  border-left:3px solid transparent;
}
.demo-tab-btn:hover{background:var(--c-surface-2);color:var(--c-text)}
.demo-tab-btn.active{
  background:var(--c-primary-50);color:var(--c-primary);
  border-left-color:var(--c-primary);font-weight:700;
}
.demo-tab-btn .idx{
  font-variant-numeric:tabular-nums;font-weight:700;font-size:13px;
  color:var(--c-text-3);flex:0 0 auto;
}
.demo-tab-btn.active .idx{color:var(--c-primary)}
.demo-pane-figure{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);
  aspect-ratio:16/10;background:var(--c-surface-2);margin-bottom:20px;
}
.demo-pane-figure img{width:100%;height:100%;object-fit:cover}
.demo-pane h3{font-size:20px;margin-bottom:10px}
.demo-pane p{color:var(--c-text-2);font-size:15px}
/* ---------- 数字条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;margin-bottom:44px;
}
.stat-cell{padding:26px 22px;border-right:1px solid var(--c-line)}
.stat-cell:last-child{border-right:0}
.stat-cell strong{
  display:block;font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--c-primary);
  line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:.5px;
}
.stat-cell span{display:block;font-size:14px;color:var(--c-text-2);margin-top:6px}
.quote-card{
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:26px;height:100%;
  transition:box-shadow .18s ease,transform .18s ease;
}
.quote-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.quote-card .qmark{color:var(--c-primary-400);font-size:22px;margin-bottom:12px}
.quote-card p{font-size:15px;color:var(--c-text);line-height:1.85;margin-bottom:16px}
.quote-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3)}
.quote-meta .avatar{
  width:34px;height:34px;border-radius:50%;background:var(--c-primary-50);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:13px;flex:0 0 auto;
}
.quote-card--offset{margin-top:32px}
/* ---------- 价格 ---------- */
.plan{
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:30px;height:100%;
  border:1.5px solid transparent;position:relative;
  transition:box-shadow .18s ease,transform .18s ease;
}
.plan:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.plan--featured{border-color:var(--c-primary);box-shadow:var(--sh-2)}
.plan-tag{
  position:absolute;top:-13px;left:30px;
  background:var(--c-accent);color:#fff;font-size:12px;font-weight:700;
  border-radius:var(--r-pill);padding:4px 14px;letter-spacing:.4px;
}
.plan h3{font-size:20px;margin-bottom:8px}
.plan .plan-desc{font-size:14px;color:var(--c-text-2);margin-bottom:18px}
.plan .plan-price{
  font-size:32px;font-weight:800;color:var(--c-ink);
  font-variant-numeric:tabular-nums;line-height:1.2;margin-bottom:6px;
}
.plan .plan-price small{font-size:14px;font-weight:600;color:var(--c-text-3);margin-left:6px}
.plan .plan-note{font-size:13px;color:var(--c-text-3);margin-bottom:20px}
.plan .check-list li{font-size:15px;padding:6px 0;border-bottom:1px dashed var(--c-line)}
.plan .check-list li:last-child{border-bottom:0}
.plan .btn{width:100%;margin-top:22px}
/* ---------- 最新信息 ---------- */
.sec-head-row{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:36px;
}
.info-card{
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:box-shadow .18s ease,transform .18s ease;
}
.info-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.info-card__cover{aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2)}
.info-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.info-card:hover .info-card__cover img{transform:scale(1.04)}
.info-card__body{padding:20px;display:flex;flex-direction:column;flex:1}
.info-card__meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.badge-cat{
  display:inline-block;background:var(--c-primary-50);color:var(--c-primary);
  font-size:12px;font-weight:600;border-radius:var(--r-pill);padding:3px 11px;
}
.badge-hot{
  display:inline-block;background:var(--c-accent);color:#fff;
  font-size:12px;font-weight:600;border-radius:var(--r-pill);padding:3px 11px;
}
.info-card__time{font-size:12px;color:var(--c-text-3);font-variant-numeric:tabular-nums}
.info-card__title{
  font-size:17px;font-weight:700;line-height:1.55;color:var(--c-ink);
  margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card:hover .info-card__title{color:var(--c-primary)}
.info-card__excerpt{
  font-size:14px;color:var(--c-text-2);line-height:1.75;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-primary);font-weight:600;
}
.info-card__foot i{transition:transform .18s ease}
.info-card:hover .info-card__foot i{transform:translateX(4px)}
.empty-state{
  min-height:160px;border:1px dashed var(--c-line);border-radius:var(--r-md);
  background:var(--c-surface-2);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  text-align:center;padding:24px;
}
.empty-state i{font-size:24px;color:var(--c-text-3)}
.empty-state p{font-size:14px;color:var(--c-text-2);margin:0}
/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);margin-bottom:12px;overflow:hidden;
  border-left:3px solid transparent;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item.open,.faq-item:has(.accordion-button:not(.collapsed)){border-left-color:var(--c-primary)}
.faq-item .accordion-button{
  background:transparent;color:var(--c-ink);
  font-size:16px;font-weight:700;line-height:1.6;
  padding:20px 46px 20px 22px;box-shadow:none;
}
.faq-item .accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none}
.faq-item .accordion-button:focus{box-shadow:0 0 0 3px rgba(14,124,134,.14)}
.faq-item .accordion-button::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230E7C86'%3e%3cpath d='M8 1.5a.9.9 0 0 1 .9.9v4.7h4.7a.9.9 0 1 1 0 1.8H8.9v4.7a.9.9 0 1 1-1.8 0V8.9H2.4a.9.9 0 1 1 0-1.8h4.7V2.4A.9.9 0 0 1 8 1.5z'/%3e%3c/svg%3e");
  background-size:14px;width:14px;height:14px;transition:transform .22s ease;
}
.faq-item .accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230E7C86'%3e%3cpath d='M2.4 7.1h11.2a.9.9 0 1 1 0 1.8H2.4a.9.9 0 1 1 0-1.8z'/%3e%3c/svg%3e");
}
.faq-item .accordion-body{
  padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);
  border-top:1px solid var(--c-line);padding-top:18px;
}
/* ---------- 尾部 CTA ---------- */
.cta-band{
  background:var(--c-surface-2);border-left:5px solid var(--c-primary);
  border-radius:var(--r-md);padding:40px 36px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(21px,2.6vw,28px);line-height:1.4;margin-bottom:10px}
.cta-band p{margin:0;color:var(--c-text-2);font-size:15px;max-width:640px}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#C9D6D8;padding:60px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--c-primary)}
.footer-brand .brand-name{color:#fff}
.footer-text{font-size:14px;line-height:1.85;color:#9FB0B3;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.3px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#C9D6D8}
.footer-col a:hover{color:var(--c-primary-400)}
.footer-info li{font-size:14px;color:#9FB0B3;margin-bottom:10px;display:flex;gap:9px}
.footer-info li i{color:var(--c-primary-400);margin-top:6px;font-size:12px;flex:0 0 auto}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8A9A9D;
}
.footer-bottom span{font-variant-numeric:tabular-nums}
/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:26px;z-index:1020;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--c-primary);color:#fff;font-weight:700;font-size:15px;
  border-radius:var(--r-pill);padding:13px 24px;
  box-shadow:0 12px 26px -12px rgba(14,124,134,.7);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,background-color .18s ease,visibility .25s;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--c-accent);color:#fff}
/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .brand-desc{display:none}
}
@media (max-width:991.98px){
  .site-nav .navbar{min-height:56px}
  .nav-c-list{flex-direction:column;align-items:stretch;gap:0;padding:10px 0}
  .nav-c-link{margin:0;padding:12px 4px;border-bottom:1px solid var(--c-line)}
  .nav-c-link::after{display:none}
  .nav-c-link.active{color:var(--c-primary)}
  .nav-actions{padding:14px 0 8px}
  .hero{padding-top:40px}
  .hero-inner{padding-bottom:44px}
  .hero-visual{margin-top:32px}
  .hero-badge{left:14px;bottom:14px}
  .section{padding:56px 0}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--c-line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .quote-card--offset{margin-top:0}
}
@media (max-width:767.98px){
  .topbar-note{display:none}
  .topbar-right .topbar-link{display:none}
  .hero h1{letter-spacing:.2px}
  .hero-sub{font-size:16px}
  .hero-cta .btn{flex:1 1 auto}
  .section{padding:44px 0}
  .sec-head{margin-bottom:28px}
  .cta-band{padding:28px 22px}
  .cta-band .btn{width:100%}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;
    justify-content:center;height:56px;padding:0 18px;
    box-shadow:0 -8px 20px -12px rgba(11,20,24,.5);
  }
  .site-footer{padding-bottom:56px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .stat-strip{grid-template-columns:1fr}
  .stat-cell{border-right:0;border-bottom:1px solid var(--c-line)}
  .stat-cell:last-child{border-bottom:0}
  .feature-main,.feature-side,.plan,.quote-card{padding:20px 16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .brand-name{font-size:16px}
}

/* roulang page: article */
:root{
  --c-primary:#0E7C86;
  --c-primary-700:#0A656D;
  --c-primary-600:#12A0AC;
  --c-primary-400:#2FC2CE;
  --c-primary-50:#E6F4F6;
  --c-accent:#FF6B2C;
  --c-accent-h:#E85A1C;
  --c-accent-50:#FFF1E9;
  --c-ink:#0B1418;
  --c-text:#16232A;
  --c-text-2:#4A5C61;
  --c-text-3:#83979C;
  --c-bg:#F2F6F7;
  --c-surface:#FFFFFF;
  --c-surface-2:#E9F1F2;
  --c-line:#D6E3E5;
  --c-ok:#1F9E6B;
  --c-err:#D93B3B;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,20,24,.06);
  --sh-2:0 14px 30px -18px rgba(11,20,24,.22);
  --t:180ms ease;
  --bs-primary:#0E7C86;
  --bs-primary-rgb:14,124,134;
  --bs-link-color:#0E7C86;
  --bs-link-hover-color:#12A0AC;
  --bs-body-color:#16232A;
  --bs-body-bg:#F2F6F7;
  --bs-body-font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --bs-border-radius:10px;
  --bs-border-radius-sm:6px;
  --bs-border-radius-lg:16px;
  --bs-border-color:#D6E3E5;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-primary-600);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;line-height:1.35;color:var(--c-ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
time,.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1180px;padding-left:20px;padding-right:20px;margin:0 auto;}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--c-ink);color:rgba(255,255,255,.9);font-size:13px;line-height:36px;height:36px;overflow:hidden;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{font-weight:600;letter-spacing:.3px;color:#fff;}
.topbar-hint{color:rgba(255,255,255,.62);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.topbar-link{color:rgba(255,255,255,.86);font-size:13px;}
.topbar-link:hover{color:var(--c-primary-400);}
.btn-topbar{
  display:inline-block;background:var(--c-primary);color:#fff;font-size:12.5px;font-weight:600;
  padding:3px 12px;border-radius:var(--r-pill);line-height:1.5;transition:background var(--t);
}
.btn-topbar:hover{background:var(--c-primary-600);color:#fff;}

/* ============ 主导航 ============ */
.site-nav{
  position:sticky;top:0;z-index:1030;background:var(--c-surface);
  border-bottom:1px solid var(--c-line);box-shadow:0 1px 0 rgba(11,20,24,.02);
}
.site-nav .navbar{padding:0;min-height:68px;}
.site-nav .container{display:flex;align-items:center;flex-wrap:wrap;}
.brand{display:flex;align-items:center;gap:10px;padding:10px 0;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:var(--r-md);display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-50);color:var(--c-primary);font-size:17px;flex-shrink:0;
  border:1px solid rgba(14,124,134,.14);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:800;color:var(--c-ink);letter-spacing:.3px;}
.brand-desc{font-size:12px;color:var(--c-text-3);letter-spacing:.2px;}
.navbar-toggler{
  border:1px solid var(--c-line);border-radius:var(--r-sm);padding:6px 10px;margin-left:auto;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(14,124,134,.15);}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%230E7C86' stroke-width='2.4' stroke-linecap='round' d='M4 8h22M4 15h22M4 22h22'/%3E%3C/svg%3E");
}
.nav-c-list{display:flex;align-items:center;gap:28px;margin:0;padding:0;}
.nav-c-link{
  position:relative;display:inline-block;padding:22px 0;font-size:15px;font-weight:600;color:var(--c-text-2);
}
.nav-c-link::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;background:var(--c-primary);
  border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-c-link:hover{color:var(--c-primary);}
.nav-c-link:hover::after{transform:scaleX(1);}
.nav-c-link.active{color:var(--c-primary);font-weight:800;}
.nav-c-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;padding:10px 0;}

/* ============ 按钮 ============ */
.btn-primary-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-primary);color:#fff;border:0;border-radius:8px;
  padding:12px 24px;font-size:15px;font-weight:700;line-height:1.4;cursor:pointer;
  transition:background var(--t),box-shadow var(--t),transform var(--t);
}
.btn-primary-c:hover{background:var(--c-primary-700);color:#fff;box-shadow:var(--sh-2);}
.btn-primary-c:active{transform:translateY(1px);}
.btn-outline-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-primary);border:1.5px solid var(--c-primary);border-radius:8px;
  padding:11px 22px;font-size:15px;font-weight:700;line-height:1.4;transition:background var(--t),color var(--t);
}
.btn-outline-c:hover{background:rgba(14,124,134,.08);color:var(--c-primary);}
.btn-ghost-c{
  display:inline-flex;align-items:center;gap:6px;background:none;border:0;padding:0;
  color:var(--c-accent);font-size:15px;font-weight:700;cursor:pointer;transition:color var(--t);
}
.btn-ghost-c i{transition:transform var(--t);}
.btn-ghost-c:hover{color:var(--c-accent-h);}
.btn-ghost-c:hover i{transform:translateX(4px);}
.btn-sm-c{padding:8px 16px;font-size:14px;border-radius:8px;}

/* ============ 页面头部 ============ */
.page-head{
  position:relative;padding:26px 0 36px;
  background:var(--c-surface-2) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(233,241,242,.94) 0%,rgba(242,246,247,.99) 100%);
}
.page-head .container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:14px;}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#B4C4C7;}
.crumb .crumb-cat{color:var(--c-primary);font-weight:600;}
.crumb .crumb-cur{
  max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--c-text-3);
}
.page-head h1{
  font-size:clamp(26px,3.8vw,40px);font-weight:800;letter-spacing:.4px;max-width:900px;
  line-height:1.3;color:var(--c-ink);
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 16px;margin-top:16px;font-size:14px;color:var(--c-text-3);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px;}
.article-meta .meta-item i{color:var(--c-primary-400);font-size:13px;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C3D2D5;display:inline-block;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-50);color:var(--c-primary);font-size:12.5px;font-weight:600;
}
.badge-hot{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-accent);color:#fff;font-size:12.5px;font-weight:600;
}
.badge-soft{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-surface-2);color:var(--c-text-2);font-size:12.5px;font-weight:600;
}

/* ============ 文章主体栅格 ============ */
.article-section{padding:52px 0 20px;}
.article-grid{
  display:grid;grid-template-columns:236px minmax(0,760px);gap:48px;justify-content:center;align-items:start;
}
.article-toc{position:sticky;top:96px;}
.toc-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:18px 18px 14px;box-shadow:var(--sh-1);
}
.toc-card h4{
  font-size:14px;font-weight:700;color:var(--c-ink);letter-spacing:.4px;margin-bottom:10px;
  display:flex;align-items:center;gap:8px;
}
.toc-card h4 i{color:var(--c-primary);font-size:13px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;font-size:13.5px;line-height:1.6;color:var(--c-text-2);padding:6px 10px;
  border-left:2px solid transparent;border-radius:0 var(--r-sm) var(--r-sm) 0;transition:all var(--t);
}
.toc-list a:hover{background:var(--c-primary-50);color:var(--c-primary);}
.toc-list a.current{border-left-color:var(--c-primary);color:var(--c-primary);font-weight:700;background:var(--c-primary-50);}
.toc-hint{margin-top:12px;padding-top:12px;border-top:1px dashed var(--c-line);font-size:12.5px;color:var(--c-text-3);line-height:1.7;}

.article-body{max-width:760px;font-size:16px;line-height:1.8;color:var(--c-text);word-wrap:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:clamp(20px,2.4vw,23px);font-weight:700;color:var(--c-ink);
  margin:42px 0 14px;padding-left:14px;border-left:4px solid var(--c-primary);line-height:1.4;
}
.article-body h3{font-size:18px;font-weight:700;color:var(--c-ink);margin:26px 0 10px;}
.article-body h4{font-size:16px;font-weight:700;color:var(--c-text);margin:20px 0 8px;}
.article-body p{margin:0 0 16px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;line-height:1.9;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:6px;}
.article-body li::marker{color:var(--c-primary-400);}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body strong{font-weight:700;color:var(--c-ink);}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;background:var(--c-surface-2);
  border-left:4px solid var(--c-accent);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:22px auto;box-shadow:var(--sh-1);}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;font-size:15px;margin:22px 0;
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
}
.article-body th{
  background:var(--c-primary-50);color:var(--c-primary);font-weight:700;text-align:left;
}
.article-body th,.article-body td{padding:10px 14px;border-bottom:1px solid var(--c-line);}
.article-body tr:last-child td{border-bottom:0;}
.article-body tbody tr:nth-child(even){background:#F7FAFA;}
.article-body code{background:var(--c-surface-2);border-radius:4px;padding:2px 6px;font-size:14px;color:var(--c-primary-700);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}

/* ============ 标签与上下篇 ============ */
.tag-block{margin-top:40px;padding-top:24px;border-top:1px solid var(--c-line);}
.tag-block h4{font-size:14px;font-weight:700;color:var(--c-text-2);margin-bottom:12px;letter-spacing:.3px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text-2);font-size:13.5px;
  transition:all var(--t);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-50);}

.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
.pn-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:18px 20px;
  box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t);display:block;
}
a.pn-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(14,124,134,.32);}
.pn-label{font-size:12.5px;color:var(--c-text-3);letter-spacing:.4px;margin-bottom:6px;display:block;}
.pn-title{font-size:15.5px;font-weight:700;color:var(--c-ink);line-height:1.5;}
.pn-card.empty{border-style:dashed;background:transparent;box-shadow:none;padding:20px;}
.pn-card.empty .pn-empty-text{font-size:13.5px;color:var(--c-text-3);}

/* ============ 空态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  min-height:160px;padding:28px 20px;background:var(--c-surface-2);
  border:1px dashed var(--c-line);border-radius:var(--r-md);text-align:center;
}
.empty-state i{font-size:22px;color:#A9BCC0;}
.empty-state p{font-size:14px;color:var(--c-text-3);}
.empty-state .btn-outline-c{margin-top:4px;}

/* ============ 分类入口卡片 ============ */
.cat-block{padding:20px 0 8px;}
.block-head{margin-bottom:26px;}
.block-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1px;
  color:var(--c-primary);text-transform:uppercase;margin-bottom:10px;
}
.block-head .eyebrow span.num-badge{
  width:24px;height:24px;border-radius:var(--r-sm);background:rgba(14,124,134,.10);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:700;letter-spacing:0;
}
.block-head h2{font-size:clamp(21px,2.6vw,27px);font-weight:700;}
.block-head h2::after{content:"";display:block;width:40px;height:3px;border-radius:2px;background:var(--c-primary);margin-top:10px;}
.block-head .sub{margin-top:12px;font-size:15px;color:var(--c-text-2);max-width:720px;line-height:1.8;}

.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.cat-card{
  display:flex;flex-direction:column;background:var(--c-surface);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t);
}
.cat-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.cat-thumb{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2);}
.cat-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease;}
.cat-card:hover .cat-thumb img{transform:scale(1.04);}
.cat-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.cat-body h3{font-size:17px;font-weight:700;line-height:1.5;color:var(--c-ink);}
.cat-body p{font-size:14px;line-height:1.75;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cat-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:6px;}
.cat-foot .time{font-size:13px;color:var(--c-text-3);display:inline-flex;align-items:center;gap:6px;}
.cat-foot .arrow{color:var(--c-accent);font-size:14px;transition:transform var(--t);}
.cat-card:hover .cat-foot .arrow{transform:translateX(4px);}

/* ============ 相关推荐 ============ */
.related-block{padding:34px 0 6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.related-grid .empty-state{grid-column:1/-1;}

/* ============ 返回入口 ============ */
.back-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:34px;padding-top:26px;border-top:1px solid var(--c-line);}
.back-row .tip{font-size:13.5px;color:var(--c-text-3);}

/* ============ 尾部 CTA ============ */
.cta-band{
  margin-top:56px;background:var(--c-surface-2);border-radius:var(--r-lg);
  border-left:5px solid var(--c-primary);padding:36px 38px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.5vw,26px);font-weight:700;margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--c-text-2);max-width:640px;line-height:1.8;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#C9D6D8;margin-top:72px;padding-top:56px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(47,194,206,.12);border-color:rgba(47,194,206,.2);color:var(--c-primary-400);}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:800;letter-spacing:.3px;}
.footer-text{font-size:14px;line-height:1.85;color:#9FB2B5;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#C9D6D8;}
.footer-col a:hover{color:var(--c-primary-400);}
.footer-info li{display:flex;gap:8px;font-size:13.5px;line-height:1.7;color:#9FB2B5;}
.footer-info i{color:var(--c-primary-400);font-size:12px;margin-top:6px;flex-shrink:0;}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8FA3A7;
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1020;
  display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:14.5px;font-weight:700;
  box-shadow:0 12px 28px -12px rgba(14,124,134,.7);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--t),transform var(--t),visibility var(--t),background var(--t);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--c-accent);color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-grid{grid-template-columns:220px minmax(0,1fr);gap:36px;}
}
@media (max-width:991.98px){
  .site-nav .navbar{padding:6px 0;}
  .nav-c-list{flex-direction:column;align-items:flex-start;gap:0;width:100%;padding:8px 0 4px;}
  .nav-c-list li{width:100%;border-bottom:1px solid var(--c-line);}
  .nav-c-list li:last-child{border-bottom:0;}
  .nav-c-link{display:block;padding:12px 0;font-size:15px;}
  .nav-c-link::after{bottom:6px;right:auto;width:22px;}
  .nav-actions{width:100%;padding:12px 0 14px;margin-left:0;}
  .nav-actions .btn-primary-c{width:100%;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-toc{display:none;}
  .cat-grid{grid-template-columns:repeat(2,1fr);}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:30px 26px;}
}
@media (max-width:767.98px){
  .topbar-hint{display:none;}
  .topbar-right .topbar-link{display:none;}
  .page-head{padding:20px 0 28px;}
  .article-section{padding:36px 0 16px;}
  .cat-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .pn-grid{grid-template-columns:1fr;}
  .cta-band{border-radius:var(--r-md);padding:26px 20px;flex-direction:column;align-items:flex-start;}
  .site-footer{margin-top:52px;padding-top:44px;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;height:56px;justify-content:center;padding:0;
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:translateY(0);}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .cat-body{padding:16px;}
  .pn-card{padding:16px;}
  .brand-desc{display:none;}
  .page-head h1{letter-spacing:.2px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0E7C86;
  --c-primary-600:#12A0AC;
  --c-primary-400:#2FC2CE;
  --c-primary-50:#E6F4F6;
  --c-accent:#FF6B2C;
  --c-accent-600:#E85A1C;
  --c-accent-50:#FFF1E9;
  --c-ink:#0B1418;
  --c-text:#16232A;
  --c-text-2:#4A5C61;
  --c-text-3:#83979C;
  --c-bg:#F2F6F7;
  --c-surface:#FFFFFF;
  --c-surface-2:#E9F1F2;
  --c-line:#D6E3E5;
  --c-ok:#1F9E6B;
  --c-err:#D93B3B;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,20,24,.06);
  --sh-2:0 14px 30px -18px rgba(11,20,24,.22);
  --font:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --bs-body-font-family:var(--font);
  --bs-primary:#0E7C86;
  --bs-border-radius:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:104px}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-600)}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:.4px}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:1180px;margin-inline:auto;padding-inline:16px}
.section{padding:72px 0}
.section-alt{background:var(--c-surface-2)}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--c-ink);color:rgba(255,255,255,.88);font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-block:6px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-left i{color:var(--c-primary-400)}
.topbar-domain{font-weight:600;letter-spacing:.3px;color:#fff}
.topbar-sep{width:1px;height:12px;background:rgba(255,255,255,.24)}
.topbar-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.topbar-link{color:rgba(255,255,255,.82);font-size:13px}
.topbar-link:hover{color:var(--c-primary-400)}

/* ============ 主导航 ============ */
.site-nav{position:sticky;top:0;z-index:1030;background:var(--c-surface);border-bottom:1px solid var(--c-line);box-shadow:0 1px 0 rgba(11,20,24,.03)}
.site-nav .navbar{height:68px;padding:0}
.site-nav .container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,var(--c-primary),var(--c-primary-600));color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.4px}
.brand-desc{font-size:12px;color:var(--c-text-3)}
.navbar-toggler{border:1px solid var(--c-line);border-radius:8px;padding:6px 10px;background:var(--c-surface)}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(14,124,134,.18)}
.navbar-toggler-icon{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%230E7C86' stroke-width='2.4' stroke-linecap='round' d='M5 8h20M5 15h20M5 22h20'/%3E%3C/svg%3E")}
.nav-c-list{display:flex;align-items:center;gap:28px;list-style:none}
.nav-c-link{position:relative;display:inline-block;font-size:15px;font-weight:600;color:var(--c-text);padding:8px 0}
.nav-c-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-c-link:hover{color:var(--c-primary)}
.nav-c-link:hover::after{transform:scaleX(1)}
.nav-c-link.active{color:var(--c-primary);font-weight:700}
.nav-c-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}

/* ============ 按钮 ============ */
.btn-primary-c,
.btn-outline-c,
.btn-accent-c,
.btn-ghost-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:8px;font-weight:700;line-height:1.2;
  padding:12px 24px;font-size:15px;border:1.5px solid transparent;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  cursor:pointer;text-align:center;
}
.btn-primary-c{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px -12px rgba(14,124,134,.9)}
.btn-primary-c:hover{background:#0b646d;color:#fff;box-shadow:var(--sh-2)}
.btn-outline-c{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline-c:hover{background:rgba(14,124,134,.08);color:var(--c-primary)}
.btn-accent-c{background:var(--c-accent);color:#fff}
.btn-accent-c:hover{background:var(--c-accent-600);color:#fff}
.btn-ghost-c{background:transparent;color:var(--c-accent);padding:8px 0;border:0}
.btn-ghost-c i{transition:transform .18s ease}
.btn-ghost-c:hover{color:var(--c-accent-600)}
.btn-ghost-c:hover i{transform:translateX(4px)}
.btn-sm-c{padding:9px 16px;font-size:14px}
.btn-xs-c{padding:5px 13px;font-size:12.5px;border-radius:var(--r-pill)}
.btn-primary-c:active,.btn-outline-c:active,.btn-accent-c:active{transform:translateY(1px)}

/* ============ 内页首屏 ============ */
.page-hero{position:relative;background:linear-gradient(180deg,var(--c-bg) 0%,#FFFFFF 100%);padding:40px 0 56px;overflow:hidden}
.page-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:6px;background:repeating-linear-gradient(115deg,rgba(14,124,134,.16) 0 7px,rgba(14,124,134,0) 7px 16px)}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--c-text-3);margin-bottom:22px}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-text-3);opacity:.7}
.crumb .now{color:var(--c-primary);font-weight:600}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:var(--c-primary-50);color:var(--c-primary);font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px}
.hero-title{font-size:clamp(30px,4.4vw,46px);font-weight:800;line-height:1.28;letter-spacing:.5px;margin-bottom:16px}
.hero-title em{font-style:normal;color:var(--c-primary)}
.hero-lead{font-size:18px;line-height:1.85;color:var(--c-text-2);max-width:640px;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.mini-tags{display:flex;flex-wrap:wrap;gap:10px}
.mini-tag{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--c-text-2);background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-pill);padding:6px 14px}
.mini-tag i{color:var(--c-primary)}
.hero-figure{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-2);aspect-ratio:16/10;background:var(--c-surface-2)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure-cap{font-size:13px;color:var(--c-text-3);margin-top:10px;text-align:center}

/* ============ 数字条 ============ */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);background:var(--c-surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;margin-top:-8px}
.stat-cell{padding:24px 22px;border-right:1px solid var(--c-line)}
.stat-cell:last-child{border-right:0}
.stat-num{font-size:32px;font-weight:800;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-label{font-size:14px;color:var(--c-text-2);margin-top:4px}

/* ============ 文档式布局 ============ */
.doc-wrap{padding:56px 0 72px}
.doc-toc{position:sticky;top:96px;background:var(--c-surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:22px 18px}
.doc-toc-title{font-size:13px;font-weight:700;color:var(--c-text-3);letter-spacing:1px;margin-bottom:12px}
.doc-toc a{display:block;font-size:14px;color:var(--c-text-2);padding:9px 12px;border-radius:8px;border-left:2px solid transparent;line-height:1.5}
.doc-toc a:hover{background:var(--c-primary-50);color:var(--c-primary)}
.doc-toc a.active{background:var(--c-primary-50);color:var(--c-primary);font-weight:700;border-left-color:var(--c-primary)}
.doc-toc-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-text-3)}

.doc-body{background:var(--c-surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:40px}
.doc-block{padding-top:40px;margin-top:40px;border-top:1px solid var(--c-line)}
.doc-block:first-child{padding-top:0;margin-top:0;border-top:0}
.doc-body h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.4;position:relative;padding-bottom:14px;margin-bottom:20px}
.doc-body h2::after{content:"";position:absolute;left:0;bottom:0;width:40px;height:3px;border-radius:3px;background:var(--c-primary)}
.doc-body h3{font-size:20px;font-weight:700;line-height:1.5;margin:26px 0 12px}
.doc-body p{color:var(--c-text-2);max-width:760px}
.doc-index{font-variant-numeric:tabular-nums;color:var(--c-primary);font-weight:800;margin-right:8px;font-size:.8em}
.note-box{background:var(--c-surface-2);border-left:4px solid var(--c-accent);border-radius:0 var(--r-md) var(--r-md) 0;padding:16px 18px;font-size:15px;color:var(--c-text);margin:20px 0}
.rule-list{list-style:none;display:grid;gap:12px;margin:20px 0 0}
.rule-list li{display:flex;gap:12px;align-items:flex-start;background:var(--c-surface-2);border-radius:var(--r-md);padding:14px 16px;font-size:15px;color:var(--c-text);line-height:1.75}
.rule-list li i{color:var(--c-primary);margin-top:6px;font-size:13px;flex-shrink:0}
.rule-list li b{color:var(--c-ink)}

.step-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:22px}
.step-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:18px 18px 16px;transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.step-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-primary-400)}
.step-no{font-size:13px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:1px}
.step-item h3{font-size:16px;margin:8px 0 6px}
.step-item p{font-size:14px;line-height:1.75;color:var(--c-text-2);margin:0}

.doc-figure{margin:24px 0 0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface-2)}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.doc-figure figcaption{font-size:13px;color:var(--c-text-3);padding:12px 14px;text-align:center;background:var(--c-surface)}

.term-table{width:100%;border-collapse:collapse;margin-top:22px;font-size:15px}
.term-table caption{caption-side:top;text-align:left;font-size:13px;color:var(--c-text-3);padding-bottom:10px}
.term-table th{background:var(--c-primary-50);color:var(--c-primary);text-align:left;font-size:14px;font-weight:700;padding:12px 14px;white-space:nowrap}
.term-table td{padding:12px 14px;border-bottom:1px solid var(--c-line);color:var(--c-text-2);vertical-align:top}
.term-table tbody tr:nth-child(even){background:#F7FBFC}
.term-table td:first-child{color:var(--c-ink);font-weight:600;white-space:nowrap}

.check-list{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:22px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-text-2);background:var(--c-surface-2);border-radius:var(--r-md);padding:13px 15px;line-height:1.7}
.check-list li i{color:var(--c-ok);margin-top:6px;font-size:13px;flex-shrink:0}

/* ============ FAQ ============ */
.faq-head{max-width:720px;margin-bottom:34px}
.faq-head h2{font-size:clamp(23px,3vw,32px);font-weight:700;position:relative;padding-bottom:14px;margin-bottom:14px}
.faq-head h2::after{content:"";position:absolute;left:0;bottom:0;width:40px;height:3px;border-radius:3px;background:var(--c-primary)}
.faq-head p{color:var(--c-text-2);font-size:16px}
.faq-item{background:var(--c-surface);border-radius:var(--r-md);box-shadow:var(--sh-1);margin-bottom:12px;overflow:hidden;border-left:3px solid transparent;transition:border-color .18s ease}
.faq-item:has(.accordion-button:not(.collapsed)){border-left-color:var(--c-primary)}
.faq-item .accordion-button{font-size:16px;font-weight:700;color:var(--c-ink);background:var(--c-surface);padding:18px 20px;box-shadow:none;border-radius:var(--r-md)}
.faq-item .accordion-button:not(.collapsed){color:var(--c-primary);background:var(--c-surface)}
.faq-item .accordion-button:focus{box-shadow:0 0 0 3px rgba(14,124,134,.16);z-index:2}
.faq-item .accordion-button::after{background-image:none;content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--c-primary);width:auto;height:auto;transform:none;display:flex;align-items:center;justify-content:center;margin-left:16px;transition:transform .2s ease}
.faq-item .accordion-button:not(.collapsed)::after{content:"−";transform:none}
.faq-item .accordion-body{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--c-text-2)}

/* ============ 尾部 CTA ============ */
.cta-band{background:var(--c-surface-2);border-left:6px solid var(--c-primary);border-radius:var(--r-lg);padding:38px 34px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;margin-bottom:8px}
.cta-band p{color:var(--c-text-2);font-size:16px;max-width:620px;margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#C9D6D8;padding:56px 0 24px;margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:11px;font-size:15px}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:800;letter-spacing:.4px}
.footer-text{font-size:14px;line-height:1.8;color:#9FB1B4;max-width:320px;margin:0}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{font-size:14px;color:#C9D6D8}
.footer-col a:hover{color:var(--c-primary-400)}
.footer-info li{display:flex;gap:9px;align-items:flex-start;font-size:14px;color:#9FB1B4;line-height:1.7}
.footer-info i{color:var(--c-primary-400);margin-top:5px;font-size:12px}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:#8FA3A6}

/* ============ 浮动 CTA ============ */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:1050;display:inline-flex;align-items:center;gap:9px;background:var(--c-primary);color:#fff;font-size:14px;font-weight:700;padding:13px 22px;border-radius:var(--r-pill);box-shadow:0 14px 30px -12px rgba(14,124,134,.85);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .25s ease,transform .25s ease,background-color .18s ease,visibility .25s}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--c-accent);color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-c-list{gap:20px}
}
@media (max-width:991.98px){
  .site-nav .navbar{height:auto;padding:10px 0}
  .navbar-collapse{background:var(--c-surface);border-top:1px solid var(--c-line);margin-top:10px;padding:14px 0 6px}
  .nav-c-list{flex-direction:column;align-items:stretch;gap:2px}
  .nav-c-link{padding:11px 4px;border-bottom:1px solid var(--c-line)}
  .nav-c-link::after{display:none}
  .nav-c-link.active{background:var(--c-primary-50);border-radius:8px;padding-left:12px}
  .nav-actions{margin-top:14px}
  .doc-toc{display:none}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--c-line)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px}
  .hero-figure{margin-top:28px}
}
@media (max-width:767.98px){
  .section{padding:44px 0}
  .doc-wrap{padding:36px 0 52px}
  .doc-body{padding:24px}
  .step-grid{grid-template-columns:1fr}
  .check-list{grid-template-columns:1fr}
  .cta-band{padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn-primary-c,.cta-actions .btn-outline-c{flex:1 1 auto}
  .float-cta{right:0;left:0;bottom:0;border-radius:0;justify-content:center;padding:16px 20px;height:56px;transform:translateY(100%)}
  .float-cta.show{transform:translateY(0)}
  .page-hero{padding:28px 0 44px}
}
@media (max-width:575.98px){
  .topbar-left .topbar-sep,.topbar-left .topbar-note{display:none}
  .hero-lead{font-size:16px}
  .stat-cell{padding:18px 14px}
  .stat-num{font-size:26px}
  .doc-body{padding:20px 16px}
  .step-item{padding:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
  .term-table{font-size:14px}
  .term-table th,.term-table td{padding:10px 8px}
}

/* roulang page: category2 */
:root{
  --c-primary:#0E7C86;
  --c-primary-600:#12A0AC;
  --c-primary-400:#2FC2CE;
  --c-primary-50:#E6F4F6;
  --c-accent:#FF6B2C;
  --c-accent-hover:#E85A1C;
  --c-accent-50:#FFF1E9;
  --c-ink:#0B1418;
  --c-text:#16232A;
  --c-text-2:#4A5C61;
  --c-text-3:#83979C;
  --c-bg:#F2F6F7;
  --c-surface:#FFFFFF;
  --c-surface-2:#E9F1F2;
  --c-line:#D6E3E5;
  --c-success:#1F9E6B;
  --c-error:#D93B3B;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,20,24,.06);
  --sh-2:0 14px 30px -18px rgba(11,20,24,.22);
  --sh-3:0 22px 44px -22px rgba(11,20,24,.3);
  --sec-pad:72px;
  --container:1180px;
  --bs-primary:#0E7C86;
  --bs-primary-rgb:14,124,134;
  --bs-body-color:#16232A;
  --bs-body-bg:#F2F6F7;
  --bs-border-color:#D6E3E5;
  --bs-border-radius:10px;
  --bs-link-color:#0E7C86;
  --bs-link-hover-color:#12A0AC;
  --bs-font-sans-serif:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--c-primary-600);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{color:var(--c-ink);margin:0;line-height:1.35;font-weight:700;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:var(--container);width:100%;padding-left:20px;padding-right:20px;margin:0 auto;}
.section{padding:var(--sec-pad) 0;}
.section-alt{background:var(--c-surface-2);}
.section-surface{background:var(--c-surface);}
.sec-head{max-width:760px;margin-bottom:36px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-50);color:var(--c-primary);
  font-size:12px;font-weight:600;letter-spacing:.4px;
  margin-bottom:14px;
}
.sec-badge.is-accent{background:var(--c-accent-50);color:var(--c-accent-hover);}
h2.sec-title{
  font-size:clamp(23px,3vw,32px);font-weight:700;line-height:1.35;
  position:relative;padding-bottom:14px;
}
h2.sec-title::after{
  content:"";position:absolute;left:0;bottom:0;width:40px;height:4px;
  background:var(--c-primary);border-radius:2px;
}
.sec-head.center h2.sec-title::after{left:50%;transform:translateX(-50%);}
.sec-sub{margin-top:14px;font-size:16px;line-height:1.85;color:var(--c-text-2);}
.tnum{font-variant-numeric:tabular-nums;}

/* ===== 顶部信息条 ===== */
.topbar{
  background:var(--c-ink);color:rgba(255,255,255,.9);
  font-size:13px;line-height:36px;min-height:36px;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{
  font-weight:700;color:#fff;letter-spacing:.4px;
  font-variant-numeric:tabular-nums;
}
.topbar-tip{
  color:rgba(255,255,255,.62);
  border-left:1px solid rgba(255,255,255,.18);
  padding-left:14px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar-right{display:flex;align-items:center;gap:12px;}
.topbar-link{color:rgba(255,255,255,.78);font-size:13px;}
.topbar-link:hover{color:#fff;}

/* ===== 按钮 ===== */
.btn-primary-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-primary);color:#fff;border:1.5px solid var(--c-primary);
  border-radius:8px;padding:12px 24px;font-size:15px;font-weight:700;
  line-height:1.2;cursor:pointer;transition:all .18s ease;
}
.btn-primary-c:hover{background:#0B666E;border-color:#0B666E;color:#fff;box-shadow:var(--sh-2);}
.btn-primary-c:active{transform:translateY(1px);}
.btn-ghost-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-primary);border:1.5px solid var(--c-primary);
  border-radius:8px;padding:12px 24px;font-size:15px;font-weight:700;
  line-height:1.2;cursor:pointer;transition:all .18s ease;
}
.btn-ghost-c:hover{background:var(--c-primary-50);color:var(--c-primary);}
.btn-ghost-c:active{transform:translateY(1px);}
.btn-text-c{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-accent);font-weight:700;font-size:15px;
}
.btn-text-c i{transition:transform .18s ease;}
.btn-text-c:hover{color:var(--c-accent-hover);}
.btn-text-c:hover i{transform:translateX(4px);}
.btn-sm-c{padding:9px 16px;font-size:14px;}
.btn-xs-c{padding:5px 14px;font-size:13px;border-radius:var(--r-pill);}
.btn-light-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-ink);border:1.5px solid #fff;
  border-radius:8px;padding:12px 24px;font-size:15px;font-weight:700;
  transition:all .18s ease;
}
.btn-light-c:hover{background:var(--c-primary-50);border-color:var(--c-primary-50);color:var(--c-primary);}

/* ===== 导航 ===== */
.site-nav{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  box-shadow:0 1px 2px rgba(11,20,24,.04);
}
.site-nav .navbar{padding:0;min-height:68px;}
.site-nav .container{display:flex;align-items:center;gap:20px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(150deg,var(--c-primary),var(--c-primary-600));
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:19px;font-weight:800;color:var(--c-ink);letter-spacing:.4px;}
.brand-desc{font-size:11px;color:var(--c-text-3);letter-spacing:.6px;}
.navbar-toggler{
  border:1px solid var(--c-line);border-radius:8px;padding:7px 10px;
  background:var(--c-surface);margin-left:auto;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(14,124,134,.15);}
.navbar-toggler-icon{
  width:20px;height:20px;background-size:cover;background-image:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%2316232A' stroke-width='2.6' stroke-linecap='round' d='M4 8h22M4 15h22M4 22h22'/%3E%3C/svg%3E");
}
.nav-c-list{display:flex;align-items:center;gap:28px;}
.nav-c-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:600;color:var(--c-text);white-space:nowrap;
}
.nav-c-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-c-link:hover{color:var(--c-primary);}
.nav-c-link:hover::after{transform:scaleX(1);}
.nav-c-link.active{color:var(--c-primary);font-weight:700;}
.nav-c-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}

/* ===== Banner 首屏 ===== */
.hero-cover{
  position:relative;overflow:hidden;
  min-height:320px;display:flex;align-items:center;
  background-image:linear-gradient(92deg,rgba(11,20,24,.88) 0%,rgba(11,20,24,.66) 46%,rgba(11,20,24,.35) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:56px 0 64px;
}
.hero-cover::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:6px;
  background:repeating-linear-gradient(115deg,var(--c-primary-400) 0 10px,var(--c-primary) 10px 20px);
  opacity:.85;
}
.hero-inner{position:relative;z-index:2;max-width:800px;}
.crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.7);margin-bottom:18px;
}
.crumbs a{color:rgba(255,255,255,.78);}
.crumbs a:hover{color:#fff;}
.crumbs .sep{opacity:.5;}
.crumbs .now{color:#fff;font-weight:600;}
.hero-cover h1{
  color:#fff;
  font-size:clamp(30px,4.4vw,46px);
  font-weight:800;line-height:1.28;letter-spacing:.5px;
  margin-bottom:16px;
}
.hero-lead{
  color:rgba(255,255,255,.85);
  font-size:18px;line-height:1.8;
  max-width:640px;margin-bottom:26px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px;}
.hero-cta .btn-ghost-c{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.hero-cta .btn-ghost-c:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tags .tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  color:#fff;font-size:13px;font-weight:600;
}
.hero-tags .tag i{color:var(--c-primary-400);}

/* ===== 图册卡片 ===== */
.album-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.album-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease;
}
.album-card:nth-child(even){margin-top:32px;}
.album-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.album-figure{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--c-surface-2);}
.album-figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.album-card:hover .album-figure img{transform:scale(1.04);}
.album-figure .no-badge{
  position:absolute;left:14px;top:14px;
  width:34px;height:34px;border-radius:9px;
  background:rgba(11,20,24,.72);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.album-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.album-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.chip{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-primary-50);color:var(--c-primary);
  font-size:12px;font-weight:600;
}
.chip.is-accent{background:var(--c-accent-50);color:var(--c-accent-hover);}
.album-body h3{font-size:17px;font-weight:700;line-height:1.5;}
.album-body p{
  font-size:14px;line-height:1.75;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.album-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:6px;}
.album-foot .stat{font-size:12px;color:var(--c-text-3);}
.album-foot .go{color:var(--c-accent);font-size:14px;font-weight:700;display:inline-flex;align-items:center;gap:6px;}
.album-foot .go i{transition:transform .18s ease;}
.album-card:hover .album-foot .go i{transform:translateX(4px);}

/* ===== 节奏四步 ===== */
.rhythm-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--c-surface);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
}
.rhythm-step{
  padding:28px 24px 30px;position:relative;
  border-right:1px solid var(--c-line);
}
.rhythm-step:last-child{border-right:0;}
.rhythm-step .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:9px;
  background:rgba(14,124,134,.1);color:var(--c-primary);
  font-size:13px;font-weight:800;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.rhythm-step h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.rhythm-step p{font-size:14px;line-height:1.75;color:var(--c-text-2);}
.rhythm-step .mini{
  margin-top:12px;font-size:12px;font-weight:600;color:var(--c-primary);
  display:inline-flex;align-items:center;gap:6px;
}

/* ===== 深色数据区 ===== */
.scene-dark{
  background:var(--c-ink);color:rgba(255,255,255,.82);
  padding:var(--sec-pad) 0;
}
.scene-dark h2.sec-title{color:#fff;}
.scene-dark h2.sec-title::after{background:var(--c-primary-400);}
.scene-dark .sec-sub{color:rgba(255,255,255,.66);}
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding-bottom:36px;margin-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.stat-item .stat-num{
  font-size:clamp(28px,3.4vw,38px);font-weight:800;color:var(--c-primary-400);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.stat-item .stat-num span{font-size:16px;font-weight:700;margin-left:2px;}
.stat-item .stat-label{margin-top:8px;font-size:13px;color:rgba(255,255,255,.6);line-height:1.6;}
.fix-list{display:flex;flex-direction:column;gap:14px;}
.fix-row{
  display:grid;grid-template-columns:1fr 40px 1fr;
  align-items:center;gap:14px;
  padding:18px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);
  transition:background .18s ease;
}
.fix-row:hover{background:rgba(255,255,255,.08);}
.fix-wrong{font-size:14px;line-height:1.7;color:rgba(255,255,255,.72);display:flex;gap:9px;align-items:flex-start;}
.fix-wrong i{color:#FF8A6B;margin-top:5px;font-size:12px;}
.fix-arrow{text-align:center;color:var(--c-primary-400);font-size:14px;}
.fix-right{font-size:14px;line-height:1.7;color:#fff;display:flex;gap:9px;align-items:flex-start;font-weight:500;}
.fix-right i{color:var(--c-primary-400);margin-top:5px;font-size:12px;}

/* ===== 要点两栏 ===== */
.split{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.panel{
  background:var(--c-surface);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
}
.panel h3{font-size:19px;margin-bottom:14px;}
.panel p{font-size:15px;line-height:1.85;color:var(--c-text-2);}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:8px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;line-height:1.75;color:var(--c-text-2);
}
.check-list li i{color:var(--c-success);margin-top:6px;font-size:13px;flex:0 0 auto;}
.quote-card{
  background:var(--c-surface-2);border-left:4px solid var(--c-accent);
  border-radius:var(--r-md);padding:18px 22px;margin-top:18px;
}
.quote-card p{font-size:14px;line-height:1.8;color:var(--c-text-2);font-style:normal;}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-c .accordion-item{
  border:0;border-bottom:1px solid var(--c-line);background:transparent;border-radius:0;
}
.faq-c .accordion-button{
  background:transparent;box-shadow:none;color:var(--c-text);
  font-size:16px;font-weight:700;line-height:1.6;
  padding:20px 44px 20px 16px;position:relative;border-radius:var(--r-sm);
  transition:background .18s ease,color .18s ease;
}
.faq-c .accordion-button:not(.collapsed){
  color:var(--c-primary);background:var(--c-primary-50);
}
.faq-c .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  background:var(--c-primary);border-radius:2px;
}
.faq-c .accordion-button:focus{box-shadow:0 0 0 3px rgba(14,124,134,.14);}
.faq-c .accordion-button::after{
  content:"+";background-image:none;
  width:auto;height:auto;transform:none;
  font-size:21px;font-weight:600;color:var(--c-primary);line-height:1;
  position:absolute;right:18px;top:50%;margin-top:-11px;
}
.faq-c .accordion-button:not(.collapsed)::after{content:"−";transform:none;}
.faq-c .accordion-body{
  padding:4px 24px 22px 16px;
  font-size:15px;line-height:1.85;color:var(--c-text-2);
}

/* ===== 尾部 CTA ===== */
.cta-band{
  background:var(--c-surface-2);
  border-left:6px solid var(--c-primary);
  border-radius:var(--r-lg);
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--c-text-2);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ===== 浮动 CTA ===== */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:1020;
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:700;
  box-shadow:var(--sh-3);border:2px solid var(--c-accent);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,background .18s ease,visibility .25s;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--c-accent);color:#fff;border-color:var(--c-accent);}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-ink);color:#C9D6D8;padding:56px 0 0;font-size:14px;}
.footer-grid{
  display:grid;grid-template-columns:2.2fr 1fr 1fr 1.4fr;gap:40px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;}
.footer-brand .brand-name{font-size:18px;font-weight:800;color:#fff;letter-spacing:.4px;}
.footer-text{font-size:14px;line-height:1.85;color:rgba(201,214,216,.72);max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:rgba(201,214,216,.78);font-size:14px;}
.footer-col a:hover{color:var(--c-primary-400);}
.footer-info li{
  display:flex;gap:9px;align-items:flex-start;
  font-size:13px;line-height:1.7;color:rgba(201,214,216,.68);
}
.footer-info i{color:var(--c-primary-400);margin-top:5px;font-size:12px;flex:0 0 auto;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(201,214,216,.58);
}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .container{max-width:100%;}
}
@media (max-width:991.98px){
  :root{--sec-pad:56px;}
  .site-nav .navbar{min-height:56px;}
  .site-nav .container{flex-wrap:wrap;padding-top:8px;padding-bottom:8px;gap:12px;}
  .navbar-collapse{
    flex-basis:100%;
    border-top:1px solid var(--c-line);
    margin-top:8px;padding-top:12px;
  }
  .nav-c-list{flex-direction:column;align-items:flex-start;gap:4px;width:100%;}
  .nav-c-list li{width:100%;}
  .nav-c-link{display:block;width:100%;padding:11px 0;border-bottom:1px solid var(--c-line);}
  .nav-c-link::after{display:none;}
  .nav-c-link.active{color:var(--c-primary);}
  .nav-actions{width:100%;margin-top:12px;}
  .nav-actions .btn-primary-c{width:100%;}
  .hero-cover{padding:44px 0 52px;}
  .album-grid{gap:22px;}
  .rhythm-band{grid-template-columns:repeat(2,1fr);}
  .rhythm-step{border-right:0;border-bottom:1px solid var(--c-line);}
  .rhythm-step:nth-child(odd){border-right:1px solid var(--c-line);}
  .rhythm-step:nth-last-child(-n+2){border-bottom:0;}
  .split{grid-template-columns:1fr;gap:24px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:24px 16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .topbar-tip{display:none;}
  .topbar{font-size:12px;}
  .hero-cover{min-height:auto;}
  .hero-lead{font-size:16px;}
  .album-grid{grid-template-columns:1fr;}
  .album-card:nth-child(even){margin-top:0;}
  .fix-row{grid-template-columns:1fr;gap:10px;padding:16px;}
  .fix-arrow{display:none;}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary-c,.cta-actions .btn-ghost-c{flex:1 1 auto;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;
    justify-content:center;height:56px;padding:0;border:0;
    border-top:2px solid var(--c-accent);
  }
  .site-footer{padding-bottom:56px;}
}
@media (max-width:575.98px){
  :root{--sec-pad:44px;}
  .hero-tags .tag{font-size:12px;padding:5px 11px;}
  .rhythm-band{grid-template-columns:1fr;}
  .rhythm-step{border-right:0 !important;border-bottom:1px solid var(--c-line);}
  .rhythm-step:last-child{border-bottom:0;}
  .panel{padding:22px;}
  .album-body{padding:16px;}
  .stat-strip{grid-template-columns:1fr 1fr;gap:20px 12px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-cta .btn-primary-c,.hero-cta .btn-ghost-c{width:100%;}
}

/* roulang page: category3 */
:root{
  --c-primary:#0E7C86;
  --c-primary-600:#12A0AC;
  --c-primary-400:#2FC2CE;
  --c-primary-50:#E6F4F6;
  --c-accent:#FF6B2C;
  --c-accent-h:#E85A1C;
  --c-accent-50:#FFF1E9;
  --c-ink:#0B1418;
  --c-text:#16232A;
  --c-text-2:#4A5C61;
  --c-text-3:#83979C;
  --c-bg:#F2F6F7;
  --c-surface:#FFFFFF;
  --c-surface-2:#E9F1F2;
  --c-line:#D6E3E5;
  --c-ok:#1F9E6B;
  --c-err:#D93B3B;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,20,24,.06);
  --sh-2:0 14px 30px -18px rgba(11,20,24,.22);
  --maxw:1180px;
  --bs-body-font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --bs-body-color:var(--c-text);
  --bs-body-bg:var(--c-bg);
  --bs-border-color:var(--c-line);
  --bs-border-radius:var(--r-md);
  --bs-link-color:var(--c-primary);
  --bs-link-hover-color:var(--c-primary-600);
  --bs-primary:var(--c-primary);
  --bs-primary-rgb:14,124,134;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-600);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);line-height:1.35;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:var(--maxw);width:100%;padding-left:20px;padding-right:20px;margin:0 auto;}
[id]{scroll-margin-top:92px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--c-ink);color:rgba(255,255,255,.9);font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0;}
.topbar-domain{font-weight:700;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:.3px;}
.topbar-tip{color:rgba(255,255,255,.62);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.topbar-link{color:rgba(255,255,255,.9);font-weight:600;}
.topbar-link:hover{color:var(--c-primary-400);}
.btn-xs-c{padding:4px 14px;font-size:12.5px;border-radius:var(--r-pill);}

/* ---------- 主导航 ---------- */
.site-nav{position:sticky;top:0;z-index:1030;background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.site-nav .navbar{height:68px;padding:0;flex-wrap:nowrap;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-400));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:800;color:var(--c-ink);letter-spacing:.3px;white-space:nowrap;}
.brand-desc{font-size:12px;color:var(--c-text-3);}
.navbar-toggler{border:1px solid var(--c-line);border-radius:8px;padding:7px 10px;box-shadow:none;}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(14,124,134,.16);}
.navbar-toggler-icon{
  background-image:none;position:relative;width:20px;height:14px;display:block;
}
.navbar-toggler-icon::before{
  content:"";position:absolute;left:0;top:0;width:20px;height:2px;border-radius:2px;
  background:var(--c-ink);box-shadow:0 6px 0 var(--c-ink),0 12px 0 var(--c-ink);
}
.nav-c-list{display:flex;align-items:center;gap:28px;margin:0 0 0 40px;padding:0;}
.nav-c-link{
  position:relative;display:inline-block;padding:22px 0;
  font-size:15px;font-weight:600;color:var(--c-text);
}
.nav-c-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav-c-link:hover{color:var(--c-primary);}
.nav-c-link:hover::after{transform:scaleX(1);}
.nav-c-link.active{color:var(--c-primary);font-weight:700;}
.nav-c-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

/* ---------- 按钮 ---------- */
.btn-primary-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-primary);color:#fff;border:1px solid var(--c-primary);
  border-radius:8px;padding:12px 24px;font-size:15px;font-weight:700;
  transition:background .18s ease,box-shadow .18s ease,transform .12s ease,border-color .18s ease;
}
.btn-primary-c:hover{background:var(--c-primary-600);border-color:var(--c-primary-600);color:#fff;box-shadow:0 12px 24px -14px rgba(14,124,134,.8);}
.btn-primary-c:active{transform:translateY(1px);}
.btn-outline-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-surface);color:var(--c-primary);border:1.5px solid var(--c-primary);
  border-radius:8px;padding:11px 22px;font-size:15px;font-weight:700;
  transition:background .18s ease,color .18s ease,transform .12s ease;
}
.btn-outline-c:hover{background:rgba(14,124,134,.08);color:var(--c-primary);}
.btn-outline-c:active{transform:translateY(1px);}
.btn-sm-c{padding:8px 18px;font-size:14px;}
.btn-ghost-c{
  display:inline-flex;align-items:center;gap:6px;background:none;border:0;padding:4px 0;
  color:var(--c-accent);font-size:15px;font-weight:700;
}
.btn-ghost-c i{transition:transform .18s ease;}
.btn-ghost-c:hover{color:var(--c-accent-h);}
.btn-ghost-c:hover i{transform:translateX(4px);}

/* ---------- 通用区块 ---------- */
.section{padding:72px 0;}
.section-alt{background:var(--c-surface);}
.section-tint{background:var(--c-surface-2);}
.sec-head{max-width:820px;margin-bottom:36px;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:12.5px;font-weight:700;letter-spacing:.6px;color:var(--c-primary);
  background:rgba(14,124,134,.1);border-radius:var(--r-pill);padding:5px 14px;
}
.sec-title{
  position:relative;font-size:clamp(23px,3vw,32px);font-weight:700;
  padding-bottom:14px;letter-spacing:.3px;
}
.sec-title::after{
  content:"";position:absolute;left:0;bottom:0;width:40px;height:3px;
  border-radius:2px;background:var(--c-primary);
}
.sec-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--c-text-2);}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--c-text-3);}
.crumb a{color:var(--c-text-3);font-weight:600;}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-line);}
.crumb .now{color:var(--c-text-2);font-weight:600;}

/* ---------- 页面首屏 ---------- */
.page-hero{
  padding:44px 0 56px;
  background:linear-gradient(180deg,var(--c-bg) 0%,var(--c-surface) 100%);
  border-bottom:1px solid var(--c-line);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.page-hero h1{
  font-size:clamp(30px,4.4vw,44px);font-weight:800;line-height:1.28;
  letter-spacing:.5px;margin:18px 0 0;
}
.hero-lead{margin-top:16px;font-size:18px;line-height:1.8;color:var(--c-text-2);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:7px 14px;font-size:13px;font-weight:600;color:var(--c-text-2);
}
.hero-badge i{color:var(--c-primary);font-size:12px;}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--sh-2);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:6px;
  background:repeating-linear-gradient(135deg,rgba(14,124,134,.55) 0 10px,rgba(255,255,255,0) 10px 20px);
}

/* ---------- 速查索引 ---------- */
.quick-index{display:flex;flex-wrap:wrap;gap:10px;}
.qi-link{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:9px 16px;font-size:14px;font-weight:600;color:var(--c-text);
  transition:border-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.qi-link b{font-size:12.5px;color:var(--c-primary);font-variant-numeric:tabular-nums;font-weight:800;}
.qi-link:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--sh-1);transform:translateY(-2px);}

/* ---------- 编号时间轴 ---------- */
.timeline{max-width:940px;}
.tl-item{position:relative;display:grid;grid-template-columns:64px 1fr;gap:26px;padding-bottom:40px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:31px;top:78px;bottom:0;width:2px;
  background:var(--c-line);border-radius:2px;
}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:64px;height:64px;border-radius:var(--r-md);
  background:rgba(14,124,134,.1);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:21px;font-weight:800;letter-spacing:.5px;font-variant-numeric:tabular-nums;
}
.tl-card{
  background:var(--c-surface);border-radius:var(--r-md);box-shadow:var(--sh-1);
  padding:24px 26px;transition:box-shadow .18s ease,transform .18s ease;
}
.tl-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.tl-card h3{font-size:20px;font-weight:700;margin-bottom:12px;}
.tl-card > p{font-size:15.5px;line-height:1.85;color:var(--c-text-2);}
.tl-sub{
  margin:20px 0 10px;font-size:13px;font-weight:700;letter-spacing:.4px;
  color:var(--c-text-3);text-transform:uppercase;
}
.ask-tags{display:flex;flex-wrap:wrap;gap:8px;}
.ask-tag{
  display:inline-block;background:var(--c-primary-50);color:var(--c-primary);
  border-radius:var(--r-pill);padding:5px 13px;font-size:13px;font-weight:600;
}
.check-list{display:grid;gap:9px;margin-top:6px;}
.check-list li{position:relative;padding-left:22px;font-size:15px;line-height:1.75;color:var(--c-text-2);}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;
  border-radius:2px;background:var(--c-accent);
}
.tl-figure{
  margin-top:20px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line);
}
.tl-figure img{width:100%;aspect-ratio:16/7;object-fit:cover;}
.tl-figure figcaption{font-size:13px;color:var(--c-text-3);padding:10px 14px;background:var(--c-surface-2);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;}
.accordion-item{
  border:0;border-radius:var(--r-md);overflow:hidden;
  background:var(--c-surface);box-shadow:var(--sh-1);margin-bottom:14px;
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  background:var(--c-surface);color:var(--c-ink);
  font-size:16px;font-weight:700;padding:20px 22px;box-shadow:none;
  border-radius:var(--r-md);
}
.accordion-button:not(.collapsed){
  background:var(--c-surface);color:var(--c-primary);
  box-shadow:inset 3px 0 0 var(--c-primary);
}
.accordion-button:focus{box-shadow:inset 3px 0 0 var(--c-primary),0 0 0 3px rgba(14,124,134,.14);}
.accordion-button::after{
  content:"+";background-image:none;width:26px;height:26px;flex:0 0 26px;
  display:flex;align-items:center;justify-content:center;margin-left:auto;
  font-size:20px;font-weight:400;color:var(--c-primary);line-height:1;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:none;}
.accordion-body{
  padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);
  border-top:1px solid var(--c-line);padding-top:18px;
}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--c-surface-2);border-left:4px solid var(--c-primary);
  border-radius:var(--r-lg);padding:36px 40px;
}
.cta-band h2{font-size:clamp(21px,2.6vw,28px);font-weight:700;}
.cta-band p{margin:12px 0 0;font-size:15.5px;line-height:1.8;color:var(--c-text-2);max-width:640px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#C9D6D8;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;font-size:15px;}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:800;}
.footer-text{font-size:14px;line-height:1.85;color:#9DB0B4;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#C9D6D8;}
.footer-col a:hover{color:var(--c-primary-400);}
.footer-info li{display:flex;gap:9px;font-size:13.5px;color:#9DB0B4;line-height:1.7;}
.footer-info i{color:var(--c-primary-400);margin-top:5px;font-size:12px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:13px;color:#87989C;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1020;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-primary);color:#fff;border-radius:var(--r-pill);
  padding:13px 22px;font-size:14px;font-weight:700;
  box-shadow:0 14px 30px -14px rgba(14,124,134,.85);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,background .18s ease,visibility .22s;
}
.float-cta.show{opacity:1;visibility:visible;transform:none;}
.float-cta:hover{background:var(--c-accent);color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-grid{gap:36px;}
  .nav-c-list{gap:22px;margin-left:28px;}
}
@media (max-width:991.98px){
  .site-nav .navbar{height:56px;}
  .brand-desc{display:none;}
  .navbar-collapse{background:var(--c-surface);padding:6px 0 18px;border-top:1px solid var(--c-line);margin-top:0;}
  .nav-c-list{flex-direction:column;align-items:stretch;gap:0;margin:8px 0 0;}
  .nav-c-list li{border-bottom:1px solid var(--c-line);}
  .nav-c-list li:last-child{border-bottom:0;}
  .nav-c-link{display:block;padding:14px 10px;}
  .nav-c-link::after{display:none;}
  .nav-c-link.active{background:var(--c-primary-50);border-radius:8px;}
  .nav-actions{padding-top:14px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-figure{order:-1;}
  .section{padding:60px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767.98px){
  .topbar-tip{display:none;}
  .topbar-left{gap:8px;}
  .page-hero{padding:32px 0 42px;}
  .hero-lead{font-size:16.5px;}
  .section{padding:44px 0;}
  .tl-item{grid-template-columns:44px 1fr;gap:16px;padding-bottom:30px;}
  .tl-num{width:44px;height:44px;font-size:16px;border-radius:8px;}
  .tl-item::before{left:21px;top:56px;}
  .tl-card{padding:20px 18px;}
  .tl-card h3{font-size:18px;}
  .tl-figure img{aspect-ratio:16/9;}
  .cta-band{padding:26px 22px;}
  .float-cta{left:0;right:0;bottom:0;border-radius:0;height:56px;justify-content:center;padding:0;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:28px;}
  .site-footer{padding-top:44px;}
  .footer-bottom{padding-bottom:76px;}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-primary-c,.hero-actions .btn-outline-c{width:100%;}
  .tl-card{padding:18px 16px;}
  .accordion-button{font-size:15.5px;padding:17px 18px;}
  .accordion-body{padding:16px 18px 18px;}
}