/* roulang page: index */
:root{
  --brand:#1B5FD9;
  --brand-dark:#14479E;
  --brand-soft:#E8F0FE;
  --safe:#12A06A;
  --safe-soft:#E6F6EF;
  --accent:#E8A33D;
  --ink:#0F1B2D;
  --body:#2B3648;
  --muted:#6B7688;
  --ph:#98A2B3;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --line:#E3E8EF;
  --line-2:#D6DEE9;
  --r-card:16px;
  --r-block:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,24,40,.06);
  --sh-md:0 8px 24px rgba(16,24,40,.08);
  --sh-lg:0 18px 40px rgba(16,24,40,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:.2px;}
h1{font-size:clamp(34px,4.2vw,52px);line-height:1.2;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(27,95,217,.35);outline-offset:2px;border-radius:6px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

.container,
.container-lg,
.container-xl{max-width:1180px;padding-left:28px;padding-right:28px;margin:0 auto;width:100%;}
@media (min-width:1600px){
  .container,.container-lg,.container-xl{max-width:1360px;}
}
@media (max-width:575.98px){
  .container,.container-lg,.container-xl{padding-left:20px;padding-right:20px;}
}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:fixed;
  top:20px;
  left:0;right:0;
  z-index:1040;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  max-width:1180px;
  margin:0 auto;
  height:64px;
  padding:0 12px 0 18px;
  display:flex;
  align-items:center;
  gap:18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.78);
  border:1px solid var(--line);
  box-shadow:var(--sh-md);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
@media (min-width:1600px){
  .nav-shell{max-width:1360px;}
}
.site-header.is-scrolled .nav-shell{
  background:#FFFFFF;
  box-shadow:var(--sh-lg);
  border-color:#EDF1F6;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
  font-weight:700;
  font-size:17px;
  letter-spacing:.3px;
}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:34px;height:34px;
  border-radius:11px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(140deg,#1B5FD9,#3F86F0);
  color:#fff;
  font-size:15px;
  box-shadow:0 6px 14px rgba(27,95,217,.28);
  flex:0 0 auto;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
  flex:1 1 auto;
}
.nav-links a{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:500;
  color:var(--body);
  white-space:nowrap;
}
.nav-links a:hover{color:var(--brand);background:#F2F6FD;}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  width:44px;height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 移动端 Offcanvas 覆写 */
.offcanvas.mobile-menu{background:#fff;width:min(88vw,360px);}
.mobile-menu .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.mobile-menu .offcanvas-body{padding:12px 20px 20px;display:flex;flex-direction:column;}
.mobile-menu .m-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:17px;
  font-weight:500;
  color:var(--ink);
  height:56px;
  border-bottom:1px solid #F0F3F8;
}
.mobile-menu .m-link:hover,.mobile-menu .m-link.active{color:var(--brand);}
.mobile-menu .m-foot{margin-top:auto;padding-top:20px;}

/* ============ 按钮 ============ */
.btn-brand,
.btn-ghost,
.btn-outline-soft{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15.5px;
  font-weight:600;
  line-height:1;
  border-radius:var(--r-btn);
  padding:14px 26px;
  border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
  cursor:pointer;
  text-align:center;
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(27,95,217,.22);}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(20,71,158,.26);}
.btn-brand:focus,.btn-brand:focus-visible{box-shadow:0 0 0 3px rgba(27,95,217,.28);}
.btn-outline-soft{background:#fff;color:var(--brand);border-color:var(--line-2);}
.btn-outline-soft:hover{border-color:var(--brand);color:var(--brand-dark);background:#F7FAFF;}
.btn-ghost{
  background:transparent;color:var(--brand);padding:8px 0;border:none;
  border-bottom:1.5px solid rgba(27,95,217,.45);border-radius:0;
}
.btn-ghost:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark);}
.btn-foot{background:var(--brand-soft);color:var(--brand);border-color:transparent;}
.btn-foot:hover{background:#DCE8FD;color:var(--brand-dark);}
.btn-block{width:100%;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
[id]{scroll-margin-top:96px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:var(--r-pill);
  padding:7px 14px;
  margin-bottom:16px;
}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16.5px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head-row p{margin-top:12px;color:var(--muted);font-size:16.5px;max-width:640px;}
.link-more{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  padding:5px 11px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand);
  line-height:1.5;
}
.badge-safe{background:var(--safe-soft);color:var(--safe);}
.badge-accent{background:#FDF3E3;color:#B47818;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:132px 0 72px;
  overflow:hidden;
  background:
    radial-gradient(920px 460px at 88% -8%,rgba(27,95,217,.10),transparent 62%),
    linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;min-height:min(88vh,720px);}
.hero h1{margin-bottom:20px;}
.hero h1 .hl{color:var(--brand);}
.hero-sub{font-size:18px;color:var(--muted);max-width:520px;margin-bottom:30px;}
.hero-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.hero-trust{
  display:flex;
  align-items:center;
  gap:26px;
  flex-wrap:wrap;
  margin-top:40px;
  padding-top:24px;
  border-top:1px dashed var(--line);
}
.hero-trust li{display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--muted);}
.hero-trust i{color:var(--brand);font-size:15px;}
.hero-visual{position:relative;}
.hero-frame{
  position:relative;
  border-radius:var(--r-block);
  overflow:hidden;
  box-shadow:var(--sh-lg);
  border:1px solid #EAF0F8;
  aspect-ratio:16/10;
  background:#EDF1F7;
}
.hero-frame img{width:100%;height:100%;object-fit:cover;}
.hero-frame::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.16),rgba(255,255,255,.04));
}
.hero-float{
  position:absolute;
  left:-14px;
  bottom:-18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--sh-md);
  padding:14px 18px;
  display:flex;
  align-items:center;
  gap:12px;
  max-width:280px;
}
.hero-float .dot{
  width:36px;height:36px;border-radius:11px;background:var(--safe-soft);color:var(--safe);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto;
}
.hero-float strong{display:block;font-size:14px;color:var(--ink);font-weight:600;}
.hero-float span{font-size:12.5px;color:var(--muted);line-height:1.6;}

/* ============ 卖点区 ============ */
.features-wrap{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.features-sticky{position:sticky;top:112px;}
.features-sticky p{margin-top:16px;color:var(--muted);font-size:16.5px;max-width:380px;}
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.feature-item{
  position:relative;
  background:var(--card);
  border:1px solid #E9EEF5;
  border-radius:var(--r-card);
  padding:26px 24px 24px;
  box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  overflow:hidden;
}
.feature-item:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(27,95,217,.28);}
.feature-item .watermark{
  position:absolute;
  top:6px;right:16px;
  font-family:var(--font-num);
  font-size:48px;
  font-weight:700;
  color:var(--brand-soft);
  line-height:1;
  letter-spacing:-1px;
  user-select:none;
}
.feature-item h3{font-size:18px;margin-bottom:10px;position:relative;}
.feature-item p{font-size:15px;color:var(--muted);line-height:1.75;position:relative;}

/* ============ 演示区 ============ */
.demo-row{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;margin-bottom:72px;}
.demo-row:last-child{margin-bottom:0;}
.demo-row.reverse{grid-template-columns:5fr 7fr;}
.demo-row.reverse .demo-visual{order:2;}
.demo-row.reverse .demo-text{order:1;}
.browser{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-block);
  box-shadow:var(--sh-md);
  overflow:hidden;
}
.browser-bar{
  display:flex;align-items:center;gap:8px;
  padding:12px 16px;
  border-bottom:1px solid #EDF1F6;
  background:#FAFBFD;
}
.browser-bar .dots{display:flex;gap:6px;}
.browser-bar .dots i{width:10px;height:10px;border-radius:50%;background:#DDE3EC;display:block;}
.browser-bar .dots i:nth-child(1){background:#F3B7B0;}
.browser-bar .dots i:nth-child(2){background:#F5D8A0;}
.browser-bar .dots i:nth-child(3){background:#B4DFC3;}
.browser-bar .url{
  flex:1 1 auto;
  height:26px;
  border-radius:var(--r-pill);
  background:#EFF3F9;
  color:var(--ph);
  font-size:12.5px;
  display:flex;align-items:center;
  padding:0 14px;
  font-family:var(--font-num);
}
.browser-body{aspect-ratio:16/10;overflow:hidden;background:#EDF1F7;}
.browser-body img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.browser:hover .browser-body img{transform:scale(1.03);}
.demo-text h3{margin-bottom:18px;}
.step-list li{
  display:flex;
  gap:14px;
  padding:12px 0;
  border-bottom:1px dashed #EDF1F6;
}
.step-list li:last-child{border-bottom:none;}
.step-list .idx{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--brand-soft);
  color:var(--brand);
  font-family:var(--font-num);
  font-size:12.5px;
  font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:4px;
}
.step-list p{font-size:15.5px;color:var(--body);line-height:1.75;}

/* ============ 证据区 ============ */
.proof-band{
  background:#fff;
  border:1px solid #E9EEF5;
  border-radius:var(--r-block);
  box-shadow:var(--sh-sm);
  padding:34px 28px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.proof-cell{padding:0 24px;border-left:1px solid #EDF1F6;}
.proof-cell:first-child{border-left:none;padding-left:0;}
.proof-cell strong{
  display:block;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:40px;
  line-height:1.1;
  color:var(--brand);
  font-weight:700;
  letter-spacing:-1px;
}
.proof-cell strong small{font-size:16px;color:var(--muted);font-weight:600;margin-left:4px;}
.proof-cell span{display:block;font-size:14px;color:var(--muted);margin-top:8px;}
.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:34px;}
.review-card{
  background:#fff;
  border:1px solid #E9EEF5;
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(27,95,217,.28);}
.review-card:nth-child(2){margin-top:28px;}
.review-card:nth-child(4){margin-top:28px;}
.review-top{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.avatar{
  width:46px;height:46px;border-radius:50%;
  background:linear-gradient(140deg,#E8F0FE,#D6E4FB);
  color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;flex:0 0 auto;
}
.review-top strong{display:block;font-size:15.5px;color:var(--ink);}
.review-top span{font-size:13px;color:var(--muted);}
.review-card p{font-size:15.5px;color:var(--body);line-height:1.8;}

/* ============ 最新信息 ============ */
.news-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:#fff;
  border:1px solid #E9EEF5;
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  color:inherit;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(27,95,217,.28);color:inherit;}
.news-cover{aspect-ratio:16/9;overflow:hidden;background:#EDF1F7;}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-body .badge-soft{align-self:flex-start;margin-bottom:12px;}
.news-title{
  font-size:18px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink);
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-summary{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:18px;
}
.news-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--ph);
  padding-top:14px;
  border-top:1px solid #F1F4F9;
}
.news-meta i{color:var(--brand);transition:transform .22s ease;}
.news-card:hover .news-meta i{transform:translateX(4px);}
.empty-state{
  border:1px dashed var(--line-2);
  border-radius:var(--r-card);
  padding:56px 24px;
  text-align:center;
  background:#fff;
}
.empty-state i{font-size:26px;color:var(--ph);margin-bottom:14px;display:block;}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:18px;}

/* ============ 价格区 ============ */
.pricing-wrap{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start;}
.plan-main{
  position:relative;
  background:#fff;
  border:1px solid rgba(27,95,217,.24);
  border-radius:var(--r-block);
  padding:40px 36px;
  box-shadow:var(--sh-lg);
}
.plan-main .plan-tag{
  position:absolute;top:22px;right:24px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;border-radius:var(--r-pill);padding:6px 12px;
}
.plan-price{display:flex;align-items:flex-end;gap:8px;margin:18px 0 6px;}
.plan-price b{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:52px;line-height:1;color:var(--ink);font-weight:700;letter-spacing:-1.5px;}
.plan-price span{font-size:15px;color:var(--muted);padding-bottom:8px;}
.plan-desc{font-size:15px;color:var(--muted);margin-bottom:26px;}
.plan-list li{display:flex;gap:12px;padding:11px 0;font-size:15.5px;color:var(--body);border-bottom:1px dashed #EDF1F6;}
.plan-list li:last-child{border-bottom:none;}
.plan-list i{color:var(--safe);font-size:15px;margin-top:6px;}
.plan-side{display:flex;flex-direction:column;gap:24px;}
.plan-mini{
  background:#fff;
  border:1px solid #E9EEF5;
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.plan-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(27,95,217,.28);}
.plan-mini h3{font-size:18px;margin-bottom:6px;}
.plan-mini .mini-price{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;color:var(--ink);margin:10px 0 10px;}
.plan-mini .mini-price small{font-size:13.5px;color:var(--muted);font-weight:500;margin-left:4px;}
.plan-mini p{font-size:14.5px;color:var(--muted);line-height:1.75;margin-bottom:18px;}
.plan-note{font-size:13px;color:var(--ph);line-height:1.7;margin-top:18px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion-item{
  border:none;
  background:#fff;
  border-radius:14px!important;
  box-shadow:var(--sh-sm);
  border:1px solid #E9EEF5;
  margin-bottom:12px;
  overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  background:#fff;
  color:var(--ink);
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  padding:20px 22px;
  box-shadow:none!important;
  gap:14px;
}
.accordion-button::before{
  content:counter(faqitem);
  counter-increment:faqitem;
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--brand-soft);
  color:var(--brand);
  font-family:var(--font-num);
  font-size:12.5px;
  font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;
}
.faq-wrap .accordion{counter-reset:faqitem;}
.accordion-button:not(.collapsed){color:var(--brand);background:#fff;}
.accordion-button::after{
  background-image:none;
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  width:30px;height:30px;
  border-radius:50%;
  background-color:#F4F7FC;
  color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .22s ease,background-color .22s ease;
  margin-left:auto;
  flex:0 0 auto;
}
.accordion-button:not(.collapsed)::after{
  content:"\f068";
  background-color:var(--brand-soft);
  transform:rotate(180deg);
}
.accordion-body{
  padding:4px 22px 22px 62px;
  background:#F6F8FB;
  font-size:15.5px;
  color:var(--body);
  line-height:1.85;
}

/* ============ CTA 条 ============ */
.cta-band{
  background:linear-gradient(120deg,#EEF4FE,#F7FAFF);
  border:1px solid #E1EAF9;
  border-radius:var(--r-block);
  padding:34px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-band h3{font-size:22px;margin-bottom:8px;}
.cta-band p{font-size:15.5px;color:var(--muted);}
.cta-gap{height:88px;}

/* ============ 表单 / 安全提示 ============ */
.form-panel{
  background:#fff;
  border:1px solid #E9EEF5;
  border-radius:var(--r-block);
  padding:32px;
  box-shadow:var(--sh-sm);
}
.form-label-cn{display:block;font-size:14px;font-weight:500;color:var(--ink);margin-bottom:8px;}
.form-control-cn{
  width:100%;
  border:1px solid var(--line-2);
  border-radius:var(--r-btn);
  padding:12px 14px;
  font-size:15px;
  color:var(--body);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-control-cn::placeholder{color:var(--ph);}
.form-control-cn:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,95,217,.16);outline:none;}
.safety-note{
  background:#F6F8FB;
  border:1px solid #EDF1F6;
  border-radius:12px;
  padding:12px 14px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--muted);
  margin-top:16px;
}
.safety-note strong{color:var(--ink);font-weight:600;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:#C7D2E0;
  padding:64px 0 0;
  margin-top:0;
}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600;}
.site-footer p{font-size:14px;line-height:1.85;color:#9FB0C6;}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1.2fr 1.4fr;gap:40px;}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand .brand-text{color:#fff;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:#C7D2E0;font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-tags span{
  font-size:12px;
  color:#B9C7DA;
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-pill);
  padding:5px 11px;
}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#93A4BA;
}
.footer-safety{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);
  border-radius:12px;
  padding:12px 14px;
  font-size:12.5px;
  line-height:1.7;
  color:#A9B8CC;
  margin-top:20px;
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:1030;
  display:inline-flex;
  align-items:center;
  gap:9px;
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-pill);
  padding:14px 24px;
  box-shadow:0 14px 30px rgba(27,95,217,.32);
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity .28s ease,transform .28s ease,background .2s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--brand-dark);color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-grid{grid-template-columns:1fr;gap:44px;min-height:auto;}
  .hero{padding-top:120px;}
  .hero-sub{max-width:none;}
  .features-wrap{grid-template-columns:1fr;gap:36px;}
  .features-sticky{position:static;}
  .features-sticky p{max-width:none;}
  .demo-row,.demo-row.reverse{grid-template-columns:1fr;gap:32px;}
  .demo-row.reverse .demo-visual,.demo-row.reverse .demo-text{order:initial;}
  .pricing-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .site-header{top:12px;}
  .nav-shell{height:60px;padding:0 10px 0 14px;gap:10px;}
  .proof-band{grid-template-columns:1fr 1fr;gap:24px 0;padding:26px 22px;}
  .proof-cell:nth-child(3){border-left:none;padding-left:0;}
  .proof-cell{padding:0 18px;}
  h2{font-size:26px;}
}
@media (max-width:767.98px){
  body{font-size:16.5px;}
  .section{padding:56px 0;}
  .hero{padding:104px 0 56px;}
  .hero-trust{gap:14px 20px;}
  .feature-grid{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .review-card:nth-child(2),.review-card:nth-child(4){margin-top:0;}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .cta-band .btn-brand,.cta-band .btn-outline-soft{width:100%;}
  .cta-gap{height:56px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .float-cta{
    left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));
    justify-content:center;height:48px;padding:0 18px;border-radius:12px;
  }
  .accordion-body{padding:4px 18px 20px 18px;}
  .plan-main{padding:30px 22px;}
  .form-panel{padding:24px 20px;}
}
@media (max-width:575.98px){
  .proof-band{grid-template-columns:1fr;gap:20px;}
  .proof-cell{border-left:none;padding:0;border-top:1px solid #EDF1F6;padding-top:18px;}
  .proof-cell:first-child{border-top:none;padding-top:0;}
  .hero-actions{gap:12px;}
  .hero-actions .btn-brand,.hero-actions .btn-outline-soft{width:100%;}
  .hero-float{position:static;margin-top:16px;max-width:none;}
  .plan-price b{font-size:42px;}
}

/* roulang page: article */
:root{
  --brand-600:#1B5FD9;
  --brand-700:#14479E;
  --brand-50:#E8F0FE;
  --ok-600:#12A06A;
  --ok-50:#E6F6EF;
  --amber:#E8A33D;
  --ink:#0F1B2D;
  --text:#2B3648;
  --muted:#6B7688;
  --ph:#98A2B3;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --line:#E3E8EF;
  --line-2:#D6DEE9;
  --line-3:#E9EEF5;
  --r-card:16px;
  --r-block:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,24,40,.06);
  --sh-md:0 8px 24px rgba(16,24,40,.08);
  --sh-lg:0 18px 40px rgba(16,24,40,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:Inter,-apple-system,"Segoe UI",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 18px;}
ul,ol{margin:0 0 18px;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(27,95,217,.35);outline-offset:2px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:768px){.container{padding-left:28px;padding-right:28px;}}
@media (min-width:1600px){.container{max-width:1360px;}}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:20px;left:0;right:0;z-index:1040;padding:0 20px;
  transition:top .25s ease;
}
@media (min-width:768px){.site-header{padding:0 28px;}}
@media (max-width:991.98px){.site-header{top:12px;}}
.nav-shell{
  max-width:1180px;margin:0 auto;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 10px 0 18px;
  background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-md);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
@media (min-width:1600px){.nav-shell{max-width:1360px;}}
.site-header.is-scrolled .nav-shell{
  background:#fff;
  box-shadow:var(--sh-lg);
  border-color:var(--line-2);
}
@media (max-width:991.98px){.nav-shell{height:60px;border-radius:18px;}}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,#1B5FD9,#14479E);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;box-shadow:0 6px 14px rgba(27,95,217,.28);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em;white-space:nowrap;}
.brand:hover .brand-text{color:var(--brand-600);}
.nav-links{align-items:center;gap:4px;}
.nav-links a{
  font-size:15px;font-weight:500;color:var(--text);
  padding:8px 16px;border-radius:var(--r-pill);
  transition:background .2s ease,color .2s ease;
}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-links a.active{color:var(--brand-600);background:var(--brand-50);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  width:42px;height:42px;border-radius:14px;border:1px solid var(--line);
  background:#fff;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);}
.mobile-nav{width:min(84vw,340px);border:0;}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.mobile-nav .offcanvas-body{padding:12px 12px 20px;display:flex;flex-direction:column;}
.m-link{
  display:block;font-size:17px;line-height:56px;height:56px;padding:0 14px;
  color:var(--ink);border-radius:12px;font-weight:500;
}
.m-link:hover,.m-link:active{background:var(--brand-50);color:var(--brand-600);}
.m-cta{margin-top:auto;padding:18px 8px 4px;}
.m-cta .btn{width:100%;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{border-radius:var(--r-btn);font-weight:600;transition:transform .18s ease,background .18s ease,border-color .18s ease,color .18s ease;}
.btn:focus,.btn:active:focus{box-shadow:none;}
.btn-brand{
  background:var(--brand-600);border:1px solid var(--brand-600);color:#fff;
  padding:14px 26px;font-size:15.5px;display:inline-flex;align-items:center;gap:8px;
}
.btn-brand:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-brand:active{transform:translateY(0);}
.btn-nav{padding:10px 18px;font-size:14.5px;}
.btn-line{
  background:#fff;border:1px solid var(--line-2);color:var(--brand-600);
  padding:13px 24px;font-size:15px;display:inline-flex;align-items:center;gap:8px;
}
.btn-line:hover{border-color:var(--brand-600);color:var(--brand-700);}
.btn-plain{
  color:var(--brand-600);text-decoration:underline;text-underline-offset:4px;
  padding:6px 0;display:inline-flex;align-items:center;gap:6px;font-size:15px;
}
.btn-plain:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;}
.btn-foot{
  background:var(--brand-50);color:var(--brand-600);border:1px solid transparent;
  padding:10px 18px;font-size:14.5px;display:inline-flex;align-items:center;
}
.btn-foot:hover{background:#dbe8fd;color:var(--brand-700);}
.btn-sm-line{
  font-size:14px;padding:9px 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line-2);color:var(--brand-600);
}
.btn-sm-line:hover{border-color:var(--brand-600);color:var(--brand-700);}

/* ---------- 文章头部 ---------- */
.article-hero{
  padding:132px 0 34px;
  background-image:linear-gradient(rgba(255,255,255,.95),rgba(255,255,255,.95)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
@media (max-width:767.98px){.article-hero{padding:104px 0 22px;}}
.breadcrumb-nav{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);margin-bottom:20px;
}
.breadcrumb-nav a{color:var(--muted);}
.breadcrumb-nav a:hover{color:var(--brand-600);}
.breadcrumb-nav .sep{color:var(--ph);}
.breadcrumb-nav .current{color:var(--brand-600);font-weight:600;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-50);color:var(--brand-600);
  border-radius:var(--r-pill);padding:5px 14px;font-size:12.5px;font-weight:600;
  margin-bottom:16px;
}
.article-title{
  font-size:clamp(30px,3.4vw,40px);line-height:1.3;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);
}
.article-meta .dot{color:var(--ph);}
.article-meta .tag-ok{color:var(--ok-600);font-weight:600;}

/* ---------- 正文区 ---------- */
.article-section{padding:36px 0 0;}
@media (max-width:767.98px){.article-section{padding:24px 0 0;}}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,780px) 240px;justify-content:center;}
}
.article-card{
  background:var(--card);border:1px solid var(--line-3);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);padding:36px 40px;max-width:780px;
}
@media (max-width:767.98px){.article-card{padding:22px 18px;}}
.article-body{font-size:17px;line-height:1.9;color:var(--text);}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;margin:38px 0 16px;padding-left:16px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.26em;width:4px;height:1.1em;
  background:var(--brand-600);border-radius:2px;
}
.article-body h3{font-size:20px;line-height:1.5;margin:28px 0 12px;font-weight:600;scroll-margin-top:96px;}
.article-body p{font-size:17px;line-height:1.9;color:var(--text);margin:0 0 18px;}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{color:var(--brand-700);}
.article-body ul{list-style:none;padding-left:0;margin:0 0 18px;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;line-height:1.85;}
.article-body ul li::before{
  content:"";position:absolute;left:3px;top:.7em;width:7px;height:7px;border-radius:50%;background:var(--brand-600);
}
.article-body ol{padding-left:22px;margin:0 0 18px;}
.article-body ol li{margin-bottom:10px;line-height:1.85;}
.article-body ol li::marker{color:var(--brand-600);font-weight:600;}
.article-body blockquote{
  background:var(--brand-50);border-left:4px solid var(--brand-600);
  border-radius:12px;padding:16px 20px;margin:22px 0;color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{width:100%;height:auto;border-radius:12px;margin:10px 0 6px;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px;}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:22px 0;font-size:15px;
}
.article-body thead th{background:#EEF3FA;color:var(--ink);font-weight:600;}
.article-body th,.article-body td{padding:11px 15px;border-bottom:1px solid var(--line);text-align:left;line-height:1.7;}
.article-body tbody tr:nth-child(even){background:var(--bg);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body code{
  background:#F1F4F9;border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:14px;font-family:var(--font-num);color:#334155;
}
.article-body hr{border:0;border-top:1px dashed var(--line-2);margin:32px 0;}

.article-empty{text-align:center;padding:48px 20px;}
.article-empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;
  background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:24px;
}
.article-empty h2{font-size:22px;margin-bottom:10px;padding:0;}
.article-empty h2::before{display:none;}
.article-empty p{color:var(--muted);font-size:15px;margin-bottom:22px;}

/* ---------- 目录 ---------- */
.article-toc{display:none;}
@media (min-width:1200px){.article-toc{display:block;}}
.article-toc.is-empty{display:none !important;}
.toc-inner{position:sticky;top:104px;}
.toc-title{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.08em;margin-bottom:12px;}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--muted);
  padding:7px 0 7px 12px;border-left:2px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.toc-list a:hover{color:var(--brand-600);}
.toc-list a.is-active{color:var(--brand-600);border-left-color:var(--brand-600);font-weight:600;}

/* ---------- 返回条 ---------- */
.return-section{padding:36px 0 0;}
.return-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  background:#EEF3FA;border-radius:var(--r-card);padding:18px 24px;
}
.return-bar p{margin:0;font-size:15px;color:var(--muted);}
.return-actions{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 相关推荐 ---------- */
.section{padding:64px 0 0;}
@media (max-width:991.98px){.section{padding:52px 0 0;}}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:24px;
}
.section-head h2{font-size:26px;line-height:1.35;}
.section-head p{margin:8px 0 0;font-size:15px;color:var(--muted);}
.card-grid{display:grid;grid-template-columns:1fr;gap:16px;}
@media (min-width:576px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
@media (min-width:992px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}}
.news-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line-3);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(27,95,217,.28);}
.news-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EEF3FA;}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-badge{
  align-self:flex-start;background:var(--brand-50);color:var(--brand-600);
  border-radius:var(--r-pill);padding:4px 12px;font-size:12px;font-weight:600;margin-bottom:12px;
}
.news-title{
  font-size:18px;line-height:1.5;font-weight:600;color:var(--ink);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  font-size:14.5px;line-height:1.75;color:var(--muted);margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.news-arrow{
  width:32px;height:32px;border-radius:50%;background:var(--brand-50);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;
  transition:background .2s ease,color .2s ease;
}
.news-card:hover .news-arrow{background:var(--brand-600);color:#fff;}

/* ---------- CTA ---------- */
.cta-section{padding:72px 0 0;}
.cta-strip{
  background:#EFF4FC;border-radius:var(--r-block);padding:34px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  margin-bottom:88px;
}
.cta-strip h2{font-size:24px;line-height:1.4;margin-bottom:8px;}
.cta-strip p{margin:0;font-size:15px;color:var(--muted);max-width:560px;}
@media (max-width:767.98px){.cta-strip{padding:26px 22px;margin-bottom:64px;}.cta-strip .btn-brand{width:100%;justify-content:center;}}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1030;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-600);color:#fff;font-size:15px;font-weight:600;
  padding:13px 22px;border-radius:var(--r-pill);
  box-shadow:0 14px 30px rgba(27,95,217,.32);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .26s ease,transform .26s ease,background .2s ease;
}
.float-cta:hover{background:var(--brand-700);color:#fff;}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
@media (max-width:767.98px){
  .float-cta{
    left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));
    justify-content:center;height:48px;padding:0 16px;border-radius:12px;
  }
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);color:#C7D2E0;font-size:14px;line-height:1.8;
  padding:72px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{color:#9FB0C6;margin:16px 0;font-size:14px;line-height:1.8;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-tags span{
  background:rgba(255,255,255,.08);border-radius:var(--r-pill);
  padding:5px 12px;font-size:12px;color:#C7D2E0;
}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#C7D2E0;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-safety{
  margin-top:18px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);
  border-radius:12px;padding:12px 14px;font-size:12px;line-height:1.7;color:#9FB0C6;
}
.footer-bottom{
  margin-top:56px;padding:20px 0 30px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between;
  font-size:13px;color:#8A99AF;
}
.footer-bottom .num{color:#8A99AF;}
@media (max-width:767.98px){
  .site-footer{padding-top:56px;}
  .footer-bottom{margin-top:40px;}
}

/* roulang page: category2 */
:root{
  --brand:#1B5FD9;
  --brand-dark:#14479E;
  --brand-soft:#E8F0FE;
  --ok:#12A06A;
  --ok-soft:#E6F6EF;
  --accent:#E8A33D;
  --accent-soft:#FCF3E4;
  --ink:#0F1B2D;
  --text:#2B3648;
  --muted:#6B7688;
  --ph:#98A2B3;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --line:#E3E8EF;
  --line-2:#D6DEE9;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,24,40,.06);
  --sh-md:0 8px 24px rgba(16,24,40,.08);
  --sh-lg:0 18px 40px rgba(16,24,40,.10);
  --section-y:88px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:.2px;}
h1{font-size:clamp(34px,4.2vw,52px);line-height:1.2;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(27,95,217,.35);border-radius:8px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.container{
  width:100%;
  padding-left:20px;
  padding-right:20px;
  margin:0 auto;
  max-width:100%;
}
@media (min-width:768px){
  .container{padding-left:28px;padding-right:28px;}
}
@media (min-width:1200px){
  .container{max-width:1180px;}
}
@media (min-width:1600px){
  .container{max-width:1360px;}
}

/* ---------- 顶部悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  top:20px;
  left:0;
  right:0;
  z-index:1030;
  padding:0 20px;
}
@media (min-width:768px){
  .site-header{padding:0 28px;}
}
.nav-inner{
  max-width:1180px;
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:18px;
  height:64px;
  padding:0 12px 0 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--sh-md);
  transition:background .25s ease,box-shadow .25s ease;
}
@media (min-width:1600px){
  .nav-inner{max-width:1360px;}
}
.site-header.scrolled .nav-inner{
  background:#FFFFFF;
  box-shadow:var(--sh-lg);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
  font-weight:700;
  font-size:16px;
}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:11px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:15px;
  background:linear-gradient(135deg,#2E74F0,#1B5FD9 60%,#14479E);
  box-shadow:0 6px 14px rgba(27,95,217,.30);
}
.brand-text{white-space:nowrap;}

.nav-links{
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  line-height:1.4;
  color:var(--text);
  border-radius:var(--r-pill);
  transition:background .2s ease,color .2s ease;
}
.nav-links a:hover{color:var(--brand);background:rgba(27,95,217,.06);}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);}

.nav-cta{
  margin-left:8px;
  padding:10px 20px !important;
  font-size:15px !important;
  border-radius:var(--r-pill) !important;
  white-space:nowrap;
}
.nav-toggle{
  margin-left:auto;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  font-size:17px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 移动端抽屉菜单 */
.mobile-menu{
  background:#fff;
  width:min(360px,88vw) !important;
}
.mobile-menu .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:16px 20px;
}
.mobile-menu .offcanvas-body{
  display:flex;
  flex-direction:column;
  padding:12px 12px 20px;
}
.mobile-menu .offcanvas-body a.m-link{
  display:block;
  font-size:17px;
  line-height:56px;
  padding:0 16px;
  border-radius:14px;
  color:var(--text);
  font-weight:500;
}
.mobile-menu .offcanvas-body a.m-link:hover{background:var(--bg);color:var(--brand);}
.mobile-menu .offcanvas-body a.m-link.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.mobile-menu .m-footer{margin-top:auto;padding:12px 4px 0;}
.mobile-menu .m-footer .btn{width:100%;}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-border-radius:var(--r-btn);
  border-radius:var(--r-btn);
  font-weight:600;
  font-size:16px;
  padding:14px 26px;
  line-height:1.2;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 3px rgba(27,95,217,.35);}
.btn-primary{
  --bs-btn-bg:var(--brand);
  --bs-btn-border-color:var(--brand);
  --bs-btn-hover-bg:var(--brand-dark);
  --bs-btn-hover-border-color:var(--brand-dark);
  --bs-btn-active-bg:var(--brand-dark);
  --bs-btn-active-border-color:var(--brand-dark);
  --bs-btn-disabled-bg:var(--brand);
  --bs-btn-disabled-border-color:var(--brand);
  color:#fff;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(27,95,217,.26);}
.btn-outline-brand{
  background:#fff;
  color:var(--brand);
  border:1px solid var(--line-2);
}
.btn-outline-brand:hover{
  background:#fff;
  color:var(--brand-dark);
  border-color:var(--brand);
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;
  border:none;
  color:var(--brand);
  padding:8px 0;
  font-weight:600;
}
.btn-ghost i{margin-left:6px;transition:transform .2s ease;}
.btn-ghost:hover i{transform:translateX(4px);}
.btn-soft{
  background:var(--brand-soft);
  color:var(--brand);
  border:1px solid transparent;
}
.btn-soft:hover{background:#DCE8FD;color:var(--brand-dark);}

/* ---------- 通用区块 ---------- */
.section{padding:var(--section-y) 0;}
@media (max-width:991px){
  .section{padding:72px 0;}
}
@media (max-width:575px){
  .section{padding:56px 0;}
}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:16.5px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:16px;
}
.eyebrow i{font-size:12px;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:132px 0 56px;
  background-image:linear-gradient(180deg,rgba(246,248,251,.88) 0%,rgba(246,248,251,.96) 55%,#F6F8FB 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.crumb{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:22px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--line-2);}
.crumb .current{color:var(--brand);font-weight:600;}
.hero-panel{
  max-width:880px;
  margin:0 auto;
  text-align:center;
}
.hero-panel h1{margin-bottom:18px;}
.hero-panel .hero-sub{
  font-size:17px;
  color:var(--muted);
  max-width:700px;
  margin:0 auto 26px;
}
.anchor-tags{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:12px;
}
.anchor-tags a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:9px 18px;
  font-size:14px;
  font-weight:500;
  color:var(--text);
  box-shadow:var(--sh-sm);
  transition:border-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.anchor-tags a:hover{
  color:var(--brand);
  border-color:rgba(27,95,217,.35);
  transform:translateY(-2px);
  box-shadow:var(--sh-md);
}
.anchor-tags a i{font-size:12px;color:var(--brand);}

/* ---------- 对比表 ---------- */
.table-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);
  overflow:hidden;
}
table.compare-table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
  line-height:1.7;
}
table.compare-table thead th{
  background:#EFF4FB;
  color:var(--ink);
  font-size:14px;
  font-weight:600;
  text-align:left;
  padding:16px 18px;
  white-space:nowrap;
}
table.compare-table tbody td{
  padding:16px 18px;
  border-top:1px solid var(--line);
  color:var(--text);
  vertical-align:top;
}
table.compare-table tbody tr:nth-child(even){background:#F6F8FB;}
table.compare-table tbody td:first-child{
  font-weight:600;
  color:var(--ink);
  white-space:nowrap;
}
.table-note{
  margin-top:18px;
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--muted);
}
.table-note i{color:var(--brand);margin-top:5px;}

.compare-stack{display:none;}
@media (max-width:767px){
  .table-wrap{display:none;}
  .compare-stack{display:grid;gap:16px;}
}
.compare-stack .stack-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px 18px 16px;
  box-shadow:var(--sh-sm);
}
.compare-stack dt{
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:10px;
}
.compare-stack dt span{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:var(--r-pill);
  padding:2px 10px;
  margin-left:8px;
  vertical-align:middle;
}
.compare-stack dd{
  margin:0 0 12px;
  font-size:15px;
  line-height:1.75;
  color:var(--text);
}
.compare-stack dd:last-child{margin-bottom:0;}
.compare-stack dd b{color:var(--ink);font-weight:600;}

/* ---------- 编号清单 ---------- */
.check-list{display:grid;gap:14px;}
.check-list li{
  display:flex;
  gap:16px;
  align-items:flex-start;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px 20px;
  box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.check-list li:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-md);
  border-color:rgba(27,95,217,.28);
}
.check-num{
  flex:0 0 34px;
  width:34px;
  height:34px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:15px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:center;
  font-variant-numeric:tabular-nums;
  margin-top:2px;
}
.check-body h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:6px;
  line-height:1.5;
}
.check-body p{font-size:15px;color:var(--muted);line-height:1.75;}

/* ---------- 注意 / 建议 ---------- */
.advice-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
@media (max-width:767px){
  .advice-grid{grid-template-columns:1fr;gap:16px;}
}
.advice-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 26px 22px;
  box-shadow:var(--sh-sm);
}
.advice-card .advice-head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}
.advice-icon{
  width:40px;
  height:40px;
  border-radius:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
}
.advice-card.is-warn .advice-icon{background:var(--accent-soft);color:#B87A1E;}
.advice-card.is-good .advice-icon{background:var(--ok-soft);color:var(--ok);}
.advice-card h3{font-size:20px;}
.advice-card ul li{
  position:relative;
  padding-left:20px;
  margin-bottom:12px;
  font-size:15.5px;
  line-height:1.75;
  color:var(--text);
}
.advice-card ul li:last-child{margin-bottom:0;}
.advice-card ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--brand);
}
.advice-card.is-good ul li::before{background:var(--ok);}
.advice-card.is-warn ul li::before{background:var(--accent);}

/* ---------- 相关内容卡片 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
@media (max-width:991px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:575px){
  .card-grid{grid-template-columns:1fr;gap:16px;}
}
.rel-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-md);
  border-color:rgba(27,95,217,.28);
}
.rel-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EDF1F7;
}
.rel-card .thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease;
}
.rel-card:hover .thumb img{transform:scale(1.03);}
.rel-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.rel-card h3{font-size:18px;line-height:1.5;font-weight:600;margin-bottom:8px;}
.rel-card p{font-size:15px;color:var(--muted);line-height:1.75;margin-bottom:16px;}
.rel-card .foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--ph);
}
.rel-card .foot i{color:var(--brand);}
.badge-cat{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  border-radius:var(--r-pill);
  padding:3px 10px;
  background:var(--brand-soft);
  color:var(--brand);
}
.badge-ok{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  border-radius:var(--r-pill);
  padding:3px 10px;
  background:var(--ok-soft);
  color:var(--ok);
}
.rel-card .badge-cat{margin-bottom:12px;align-self:flex-start;}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#E8F0FE 0%,#F3F7FE 55%,#F6F8FB 100%);
  border:1px solid #DCE7FA;
  border-radius:var(--r-lg);
  padding:34px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  margin-bottom:88px;
}
@media (max-width:767px){
  .cta-band{
    flex-direction:column;
    align-items:flex-start;
    padding:26px 22px;
    margin-bottom:56px;
  }
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{font-size:15.5px;color:var(--muted);}

.safety-note{
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:12px;
  padding:14px 16px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--muted);
}
.safety-note strong{color:var(--ink);font-weight:600;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#C7D2E0;
  padding:64px 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:44px;
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
.site-footer .brand{color:#fff;font-size:16px;margin-bottom:16px;}
.site-footer .brand:hover{color:#fff;}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.site-footer p{color:#9FB0C6;line-height:1.8;font-size:14px;}
.footer-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
}
.footer-tags span{
  font-size:12px;
  color:#C7D2E0;
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-pill);
  padding:4px 12px;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:#C7D2E0;font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-safety{
  margin-top:16px;
  background:rgba(255,255,255,.06);
  border-radius:12px;
  padding:12px 14px;
  font-size:12.5px;
  line-height:1.7;
  color:#9FB0C6;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:#8695AC;
  flex-wrap:wrap;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:1020;
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  padding:13px 22px;
  border-radius:var(--r-pill);
  box-shadow:0 12px 30px rgba(27,95,217,.34);
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,background .2s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--brand-dark);color:#fff;}
@media (max-width:575px){
  .float-cta{
    left:12px;
    right:12px;
    bottom:0;
    border-radius:14px 14px 0 0;
    justify-content:center;
    padding:16px 20px;
    padding-bottom:calc(16px + env(safe-area-inset-bottom));
  }
}

/* 锚点滚动留白 */
[id]{scroll-margin-top:96px;}

/* roulang page: category1 */
:root{
  --brand:#1B5FD9;
  --brand-dark:#14479E;
  --brand-soft:#E8F0FE;
  --ok:#12A06A;
  --ok-soft:#E6F6EF;
  --accent:#E8A33D;
  --text-1:#0F1B2D;
  --text-2:#2B3648;
  --text-3:#6B7688;
  --text-4:#98A2B3;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --footer-bg:#0F1B2D;
  --border:#E3E8EF;
  --border-hover:#D6DEE9;
  --line-soft:#E9EEF5;
  --r-card:16px;
  --r-block:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,24,40,.06);
  --sh-md:0 8px 24px rgba(16,24,40,.08);
  --sh-lg:0 18px 40px rgba(16,24,40,.10);
  --nav-h:64px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text-2);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;background:#EEF2F8}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid rgba(27,95,217,.35);outline-offset:2px}
[id]{scroll-margin-top:96px}

.container{width:100%;max-width:1180px;margin-inline:auto;padding-inline:28px}
@media (min-width:1600px){.container{max-width:1360px}}
@media (max-width:575.98px){.container{padding-inline:20px}}

/* ============ 悬浮胶囊导航 ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1040;padding:20px 0 0;transition:padding .25s ease}
.site-header.is-scrolled{padding-top:12px}
.nav-pill{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:var(--nav-h);padding:0 12px 0 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--border);box-shadow:var(--sh-md);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled .nav-pill{background:#fff;box-shadow:var(--sh-lg)}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:17px;letter-spacing:.2px;white-space:nowrap}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
  box-shadow:0 6px 14px rgba(27,95,217,.26);flex:0 0 auto;
}
.nav-links{align-items:center;gap:4px}
.nav-links a{padding:9px 16px;border-radius:var(--r-pill);font-size:15px;font-weight:500;color:var(--text-2);transition:background .2s ease,color .2s ease}
.nav-links a:hover{color:var(--brand);background:rgba(27,95,217,.07)}
.nav-links a.active{color:var(--brand);background:var(--brand-soft)}
.nav-toggle{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--border);background:#fff;
  color:var(--text-1);font-size:16px;display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 20px;border-radius:var(--r-pill);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .2s ease,transform .2s ease;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}

/* 移动端抽屉 */
.mobile-nav{width:min(88vw,360px);background:#fff;border-left:1px solid var(--border)}
.mobile-nav .offcanvas-header{padding:20px 22px;border-bottom:1px solid var(--border)}
.mobile-nav .offcanvas-body{padding:12px;display:flex;flex-direction:column}
.m-link{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 14px;border-radius:12px;font-size:17px;font-weight:500;color:var(--text-1)}
.m-link:hover,.m-link.active{background:var(--brand-soft);color:var(--brand)}
.mobile-nav-foot{margin-top:auto;padding:16px 10px calc(16px + env(safe-area-inset-bottom));border-top:1px solid var(--border)}
.mobile-nav-foot .btn-main{width:100%;justify-content:center}

/* ============ 按钮 ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);background:var(--brand);color:#fff;
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(27,95,217,.24)}
.btn-main:active{transform:translateY(0);box-shadow:none}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);background:#fff;color:var(--brand);
  font-size:15px;font-weight:600;border:1px solid var(--border-hover);cursor:pointer;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.btn-line:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);border-bottom:2px solid rgba(27,95,217,.35);padding-bottom:2px;text-decoration:none}
.btn-text:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.btn-soft{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:var(--r-btn);background:var(--brand-soft);color:var(--brand);font-size:15px;font-weight:600;transition:background .2s ease,color .2s ease}
.btn-soft:hover{background:#D8E6FD;color:var(--brand-dark)}

/* ============ 页面主体偏移 ============ */
.page-main{padding-top:118px}
@media (max-width:991.98px){.page-main{padding-top:100px}}

/* ============ 分类页头 ============ */
.cat-hero{position:relative;padding-bottom:8px}
.cat-hero::before{
  content:"";position:absolute;inset:-40px 0 auto 0;height:360px;z-index:-1;
  background:linear-gradient(180deg,rgba(27,95,217,.08),rgba(246,248,251,0) 78%);
}
.crumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-3);margin-bottom:26px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--text-4)}
.crumb .current{color:var(--brand);font-weight:600}
.cat-hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:start}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;margin-bottom:18px;
}
.cat-hero h1{font-size:clamp(32px,4vw,50px);line-height:1.2;font-weight:700;letter-spacing:-.5px}
.cat-lead{font-size:16.5px;line-height:1.9;color:var(--text-2)}
.cat-lead p+p{margin-top:14px}
.hero-points{margin-top:22px;display:grid;gap:12px}
.hero-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text-3);line-height:1.7}
.hero-points i{color:var(--ok);font-size:14px;margin-top:4px}
@media (max-width:991.98px){
  .cat-hero-grid{grid-template-columns:1fr;gap:26px}
}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
@media (max-width:991.98px){.section{padding:72px 0}}
@media (max-width:575.98px){.section{padding:56px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:36px}
.section-head h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.3px}
.section-head p{margin-top:10px;font-size:15.5px;color:var(--text-3);max-width:640px}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--brand);white-space:nowrap}
.link-more:hover{gap:12px;color:var(--brand-dark)}
.link-more i{font-size:12px;transition:transform .2s ease}
@media (max-width:767.98px){
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .section-head h2{font-size:25px}
}

/* ============ 目录卡片流 ============ */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media (max-width:767.98px){.card-grid{grid-template-columns:1fr;gap:16px}}
.entry-card{
  position:relative;display:block;background:var(--card);border:1px solid var(--line-soft);
  border-radius:var(--r-card);padding:26px 28px;box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(27,95,217,.28)}
.entry-num{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.entry-card h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px}
.entry-card p{font-size:15px;line-height:1.75;color:var(--text-3);padding-right:44px}
.entry-arrow{
  position:absolute;right:26px;top:50%;transform:translateY(-50%);
  width:34px;height:34px;border-radius:var(--r-pill);background:var(--bg);color:var(--text-4);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.entry-card:hover .entry-arrow{background:var(--brand);color:#fff;transform:translateY(-50%) translateX(3px)}

/* ============ 操作顺序 ============ */
.steps-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media (max-width:767.98px){.steps-grid{grid-template-columns:1fr;gap:16px}}
.step{
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:28px 28px 26px;box-shadow:var(--sh-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(27,95,217,.28)}
.step-num{
  display:block;font-size:48px;line-height:1.05;font-weight:700;letter-spacing:-2px;
  color:rgba(27,95,217,.18);font-variant-numeric:tabular-nums;margin-bottom:10px;
}
.step h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px}
.step p{font-size:15px;line-height:1.78;color:var(--text-3)}

/* ============ 图文核对区 ============ */
.prep-grid{display:grid;grid-template-columns:5fr 6fr;gap:52px;align-items:center}
@media (max-width:991.98px){.prep-grid{grid-template-columns:1fr;gap:32px}}
.media-frame{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-soft);
  box-shadow:var(--sh-md);background:#EEF2F8;
}
.media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .45s ease}
.media-frame:hover img{transform:scale(1.03)}
.prep-list{display:grid;gap:18px;margin-top:24px}
.prep-list li{display:flex;gap:14px;align-items:flex-start}
.prep-list .tick{
  flex:0 0 auto;width:26px;height:26px;border-radius:var(--r-pill);background:var(--ok-soft);
  color:var(--ok);display:inline-flex;align-items:center;justify-content:center;font-size:12px;margin-top:3px;
}
.prep-list h4{font-size:16px;font-weight:600;margin-bottom:4px;line-height:1.5}
.prep-list p{font-size:14.5px;line-height:1.75;color:var(--text-3)}
.prep-note{
  margin-top:26px;padding:16px 18px;border-radius:14px;background:#fff;border:1px solid var(--line-soft);
  font-size:14px;line-height:1.75;color:var(--text-3);display:flex;gap:12px;
}
.prep-note i{color:var(--brand);margin-top:4px}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin-inline:auto}
.faq-accordion .accordion-item{
  border:1px solid var(--line-soft);border-radius:14px !important;background:#fff;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-sm);
}
.faq-accordion .accordion-button{
  background:#fff;font-size:16.5px;font-weight:600;color:var(--text-1);
  padding:20px 24px;line-height:1.6;box-shadow:none !important;gap:14px;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand);background:#fff}
.faq-accordion .accordion-button:focus{box-shadow:none !important}
.faq-accordion .accordion-button::after{
  background-image:none;content:"+";width:28px;height:28px;flex:0 0 28px;
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:400;
  color:var(--brand);background:var(--brand-soft);border-radius:var(--r-pill);
  transition:background .2s ease,color .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"−";background:var(--brand);color:#fff;transform:none;
}
.faq-accordion .accordion-body{
  padding:0 24px 22px;background:#F6F8FB;color:var(--text-2);
  font-size:15.5px;line-height:1.85;
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(27,95,217,.28)}

/* ============ 相关内容跳转 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:991.98px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575.98px){.rel-grid{grid-template-columns:1fr;gap:16px}}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line-soft);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(27,95,217,.28)}
.rel-thumb{overflow:hidden}
.rel-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .45s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px;font-weight:600;line-height:1.5}
.rel-body p{font-size:14.5px;line-height:1.7;color:var(--text-3);flex:1}
.rel-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-4)}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
}
.badge-ok{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--ok-soft);color:var(--ok);font-size:12px;font-weight:600;
}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--brand-soft);border-radius:var(--r-block);padding:38px 42px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:26px;line-height:1.35;font-weight:700;margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--text-3);line-height:1.75;max-width:620px}
.cta-band .cta-action{flex:0 0 auto;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.safety-line{
  margin-top:20px;padding:14px 18px;border-radius:14px;background:#EEF2F8;
  font-size:12.5px;line-height:1.7;color:var(--text-3);
}
@media (max-width:767.98px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .cta-band h2{font-size:22px}
  .cta-band .cta-action{width:100%;align-items:stretch}
  .cta-band .cta-action .btn-main{width:100%}
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1030;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta .btn-main{padding:14px 24px;border-radius:var(--r-pill);box-shadow:var(--sh-lg)}
@media (max-width:575.98px){
  .float-cta{left:12px;right:12px;bottom:12px;padding-bottom:env(safe-area-inset-bottom)}
  .float-cta .btn-main{width:100%;height:48px;padding:0 16px;border-radius:14px}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);color:#C7D2E0;margin-top:88px;padding:72px 0 0;font-size:14px;line-height:1.8}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.site-footer .brand{color:#fff;font-size:17px;margin-bottom:16px}
.site-footer .brand:hover{color:#fff}
.site-footer .brand-mark{background:var(--brand)}
.footer-brand p{color:#9FB0C6;font-size:14px;line-height:1.8;max-width:320px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-tags span{
  padding:5px 12px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.14);
  font-size:12px;color:#A9BAD0;
}
.footer-links li+li{margin-top:10px}
.footer-links a{color:#C7D2E0}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-safety{
  margin-top:16px;padding:14px 16px;border-radius:12px;background:rgba(255,255,255,.05);
  font-size:12.5px;line-height:1.7;color:#9FB0C6;
}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:#8899B0;
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:575.98px){
  .site-footer{padding-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}