/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --brand-900:#0E2F5C;
  --brand-700:#17457F;
  --brand-500:#2D6FC0;
  --brand-100:#E3EDF9;
  --accent:#D9482F;
  --teal:#0FA98F;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#0E1B2C;
  --ink-2:#5A6B80;
  --ink-3:#8A97A8;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --sh-1:0 1px 2px rgba(14,47,92,.06), 0 8px 24px -12px rgba(14,47,92,.12);
  --sh-2:0 2px 4px rgba(14,47,92,.08), 0 18px 40px -16px rgba(14,47,92,.20);
  --container:1200px;
  --font:-apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
}
/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand-700);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-sm) 0;
}
.skip-link:focus{left:0;color:#fff;}
/* ============ 容器 ============ */
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
/* ============ 顶部细条 ============ */
.topbar{
  background:rgba(227,237,249,.6);
  border-bottom:1px solid var(--line);
  font-size:13px;
  line-height:1.4;
}
.topbar__inner{
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar__note{color:var(--ink-2);}
.topbar__link{color:var(--brand-700);font-weight:500;}
.topbar__link:hover{color:var(--accent);}
/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.nav__logo{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  flex:0 0 auto;
}
.nav__logo:hover{color:var(--brand-700);}
.nav__mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
}
.nav__name{
  font-size:17px;
  font-weight:700;
  letter-spacing:.2px;
  white-space:nowrap;
}
.nav__menu{
  display:flex;
  align-items:center;
  gap:34px;
  margin-left:auto;
}
.nav__link{
  position:relative;
  color:var(--ink);
  font-size:15px;
  padding:6px 0;
  white-space:nowrap;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:transparent;
  border-radius:2px;
  transition:background .2s ease;
}
.nav__link:hover{color:var(--brand-700);}
.nav__link:hover::after{background:var(--brand-100);}
.nav__link.is-active{color:var(--brand-700);font-weight:600;}
.nav__link.is-active::after{background:var(--accent);}
.nav__actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav__icon{
  display:grid;place-items:center;
  width:38px;height:38px;
  border-radius:var(--r-sm);
  color:var(--ink-2);
  border:1px solid transparent;
}
.nav__icon:hover{color:var(--brand-700);border-color:var(--line);background:var(--brand-100);}
.nav__burger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#fff;
  padding:0;
  place-items:center;
  gap:5px;
}
.nav__burger span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.nav__burger[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.nav__burger[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg);}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--brand-700);color:#fff;}
.btn--primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn--primary:active{transform:translateY(0);box-shadow:none;}
.btn--ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-700);}
.btn--ghost:hover{background:var(--brand-100);color:var(--brand-700);}
.btn--light{background:#fff;color:var(--brand-900);border-color:#fff;}
.btn--light:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-1px);}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn--sm{height:40px;padding:0 20px;font-size:14px;border-radius:var(--r-sm);}
.link-more{
  color:var(--brand-700);
  font-weight:600;
  font-size:15px;
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:2px;
}
.link-more:hover{color:var(--accent);}
/* ============ 抽屉导航 ============ */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(14,47,92,.4);
  opacity:0;pointer-events:none;
  transition:opacity .25s ease;
  z-index:110;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:302px;
  max-width:86vw;
  background:#fff;
  z-index:120;
  transform:translateX(100%);
  transition:transform .28s ease;
  display:flex;
  flex-direction:column;
  box-shadow:var(--sh-2);
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{
  height:72px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;
  border-bottom:1px solid var(--line);
  font-weight:700;
  font-size:15px;
}
.drawer__close{
  width:36px;height:36px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--ink-2);line-height:1;
}
.drawer__nav{padding:12px 0;flex:1;overflow:auto;}
.drawer__nav a{
  display:block;
  padding:16px 20px;
  color:var(--ink);
  font-size:15px;
  border-bottom:1px solid var(--line);
}
.drawer__nav a:hover{background:var(--brand-100);color:var(--brand-700);}
.drawer__nav a.is-active{color:var(--brand-700);font-weight:600;border-left:3px solid var(--accent);padding-left:17px;}
.drawer__foot{padding:16px 20px 24px;border-top:1px solid var(--line);}
.drawer__foot .btn{width:100%;}
/* ============ Hero ============ */
.hero{
  background:linear-gradient(180deg,#FFFFFF 0%, var(--bg) 100%);
  padding:96px 0 80px;
}
.hero__inner{
  display:grid;
  grid-template-columns:6fr 6fr;
  gap:56px;
  align-items:center;
  min-height:560px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:500;
  line-height:1.4;
  color:var(--brand-700);
  background:var(--brand-100);
  border:1px solid #D2E1F4;
  border-radius:999px;
  padding:7px 15px;
  margin-bottom:22px;
}
.badge::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
}
.hero h1{
  font-size:clamp(32px,4vw,48px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.5px;
  color:var(--ink);
  max-width:15em;
}
.hero__sub{
  margin-top:20px;
  font-size:17px;
  line-height:1.8;
  color:var(--ink-2);
  max-width:30em;
}
.hero__cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero__meta{
  margin-top:18px;
  font-size:13px;
  line-height:1.7;
  color:var(--ink-3);
  max-width:32em;
}
.stat-row{
  display:flex;
  flex-wrap:wrap;
  margin-top:40px;
  border-top:1px solid var(--line);
  padding-top:24px;
}
.stat-row li{
  padding-right:28px;
  margin-right:28px;
  border-right:1px solid var(--line);
}
.stat-row li:last-child{border-right:0;padding-right:0;margin-right:0;}
.stat-row strong{
  display:block;
  font-size:32px;
  line-height:1.2;
  font-weight:700;
  color:var(--brand-700);
}
.stat-row span{
  display:block;
  font-size:13px;
  color:var(--ink-3);
  margin-top:4px;
}
.hero__media{position:relative;}
.hero__card{
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:#fff;
  box-shadow:var(--sh-2);
}
.hero__card img{width:100%;height:100%;object-fit:cover;}
.hero__card--back{aspect-ratio:4/3;}
.hero__card--cover{
  position:absolute;
  right:-18px;
  bottom:-30px;
  width:47%;
  border-radius:var(--r-md);
  box-shadow:0 18px 42px -16px rgba(14,47,92,.35);
}
.hero__card--cover img{aspect-ratio:4/3;object-fit:cover;}
/* ============ 信任条 ============ */
.trust{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--surface);
}
.trust__inner{
  min-height:96px;
  display:flex;
  align-items:center;
  gap:28px;
  flex-wrap:wrap;
}
.trust__label{
  font-size:13px;
  color:var(--ink-3);
  flex:0 0 auto;
}
.trust__list{
  display:flex;
  flex-wrap:wrap;
  gap:14px 34px;
  align-items:center;
}
.trust__list li{
  font-size:14px;
  color:var(--ink-3);
  letter-spacing:.4px;
}
/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section--tight{padding-top:0;}
.section--alt{background:var(--surface);}
.section__head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:32px;
}
.section__head h2{
  font-size:28px;
  line-height:1.35;
  font-weight:600;
  color:var(--ink);
  position:relative;
  padding-left:18px;
}
.section__head h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;
  width:4px;height:.95em;
  border-radius:2px;
  background:var(--brand-500);
}
.section__desc{
  margin-top:12px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
  max-width:46em;
}
/* ============ 痛点区 ============ */
.pain__list{
  border-top:1px solid var(--line);
}
.pain__item{
  display:grid;
  grid-template-columns:120px 1fr;
  gap:32px;
  padding:32px 0;
  border-bottom:1px solid var(--line);
  align-items:start;
}
.pain__num{
  font-size:52px;
  line-height:1;
  font-weight:700;
  color:var(--accent);
  letter-spacing:-1px;
}
.pain__item:nth-child(2) .pain__num{color:var(--brand-500);}
.pain__item h3{
  font-size:20px;
  line-height:1.5;
  font-weight:600;
  margin-bottom:8px;
}
.pain__item p{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:44em;
}
/* ============ 解决方案 ============ */
.solve__row{
  display:grid;
  grid-template-columns:5fr 6fr;
  gap:56px;
  align-items:center;
  padding:44px 0;
  border-bottom:1px solid var(--line);
}
.solve__row:last-child{border-bottom:0;}
.solve__row--reverse .solve__media{order:2;}
.solve__media{
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.solve__media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.solve__index{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--teal);
  background:rgba(15,169,143,.12);
  border-radius:999px;
  padding:5px 13px;
  margin-bottom:16px;
  line-height:1.4;
}
.solve__body h3{
  font-size:22px;
  line-height:1.5;
  font-weight:600;
  margin-bottom:14px;
}
.solve__body > p{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
  margin-bottom:20px;
  max-width:42em;
}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
  margin-bottom:8px;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:2px;top:.68em;
  width:7px;height:7px;
  background:var(--brand-500);
  border-radius:1px;
}
.solve__body .link-more{display:inline-block;margin-top:20px;}
/* ============ 成果时间轴 ============ */
.timeline{
  position:relative;
  padding-left:36px;
  max-width:860px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:11px;top:10px;bottom:10px;
  width:2px;
  background:var(--line);
}
.timeline__item{
  position:relative;
  padding-bottom:34px;
}
.timeline__item:last-child{padding-bottom:0;}
.timeline__item::before{
  content:"";
  position:absolute;
  left:-30px;top:8px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px #fff;
}
.timeline__year{
  font-size:32px;
  line-height:1.2;
  font-weight:700;
  color:var(--brand-700);
  letter-spacing:-.5px;
}
.timeline__item h3{
  font-size:18px;
  font-weight:600;
  margin:6px 0 6px;
}
.timeline__item p{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-2);
  max-width:44em;
}
/* ============ 证言 ============ */
.quote-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.quote-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:32px 28px 28px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.quote-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.quote-card::before{
  content:"“";
  position:absolute;
  top:6px;left:22px;
  font-size:64px;
  line-height:1;
  color:var(--brand-100);
  font-family:Georgia,"Songti SC",serif;
}
.quote-card p{
  position:relative;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
}
.quote-card__who{
  display:flex;
  align-items:center;
  gap:14px;
  margin-top:22px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.quote-card__avatar{
  width:48px;height:48px;
  flex:0 0 48px;
  border-radius:50%;
  background:var(--brand-100);
  color:var(--brand-700);
  display:grid;place-items:center;
  font-weight:700;
  font-size:15px;
  border:1px solid #D2E1F4;
}
.quote-card__name{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;}
.quote-card__org{font-size:13px;color:var(--ink-3);line-height:1.6;}
/* ============ 资讯卡片 ============ */
.post-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.post-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.post-card__media{
  display:block;
  border-bottom:1px solid var(--line);
  overflow:hidden;
  background:var(--brand-100);
}
.post-card__media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .35s ease;
}
.post-card:hover .post-card__media img{transform:scale(1.03);}
.post-card__body{
  padding:22px 24px 20px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.pill{
  align-self:flex-start;
  font-size:13px;
  font-weight:500;
  line-height:1.4;
  color:var(--teal);
  background:rgba(15,169,143,.12);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:14px;
}
.post-card__title{
  font-size:18px;
  font-weight:600;
  line-height:1.55;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-card__title a{color:var(--ink);}
.post-card:hover .post-card__title a{color:var(--brand-700);}
.post-card__excerpt{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:18px;
}
.post-card__foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-3);
}
.post-card__arrow{color:var(--brand-500);font-weight:600;transition:transform .2s ease;}
.post-card:hover .post-card__arrow{transform:translateX(4px);color:var(--accent);}
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-md);
  padding:56px 24px;
  text-align:center;
  background:var(--surface);
}
.empty-state p{
  font-size:14px;
  color:var(--ink-3);
  margin-bottom:20px;
}
/* ============ FAQ ============ */
.faq__layout{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:56px;
  align-items:start;
}
.faq__intro h2{
  font-size:28px;
  line-height:1.35;
  font-weight:600;
  padding-left:18px;
  position:relative;
}
.faq__intro h2::before{
  content:"";
  position:absolute;left:0;top:.28em;
  width:4px;height:.95em;border-radius:2px;background:var(--brand-500);
}
.faq__intro p{
  margin-top:14px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.faq__intro .btn{margin-top:24px;}
.faq__item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  margin-bottom:14px;
  overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq__item:hover{border-color:#D2E1F4;}
.faq__item.is-open{box-shadow:var(--sh-1);border-color:#CBDDF3;}
.faq__q{
  width:100%;
  background:transparent;
  border:0;
  text-align:left;
  padding:20px 28px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  line-height:1.6;
}
.faq__q:hover{color:var(--brand-700);}
.faq__sign{
  flex:0 0 auto;
  width:20px;height:20px;
  position:relative;
  transition:transform .25s ease;
}
.faq__sign::before,
.faq__sign::after{
  content:"";
  position:absolute;
  background:var(--brand-500);
  border-radius:2px;
}
.faq__sign::before{left:0;top:9px;width:20px;height:2px;}
.faq__sign::after{left:9px;top:0;width:2px;height:20px;}
.faq__item.is-open .faq__sign{transform:rotate(45deg);}
.faq__a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq__a p{
  padding:0 28px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
}
/* ============ 底部 CTA ============ */
.cta{
  position:relative;
  background-color:var(--brand-900);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.cta::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(14,47,92,.88);
}
.cta__inner{
  position:relative;
  padding:80px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta h2{
  font-size:28px;
  line-height:1.4;
  font-weight:600;
  color:#fff;
}
.cta p{
  margin-top:12px;
  font-size:15px;
  line-height:1.8;
  color:#C9D6E8;
  max-width:38em;
}
.cta__actions{display:flex;gap:14px;flex-wrap:wrap;}
/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);
  color:#C9D6E8;
  font-size:14px;
}
.footer__main{
  display:grid;
  grid-template-columns:2.2fr 1fr 1.3fr 1.4fr;
  gap:40px;
  padding:64px 0 40px;
}
.footer__brand .nav__name{color:#fff;font-size:16px;}
.footer__logo{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  margin-bottom:16px;
}
.footer__brand p{
  font-size:13.5px;
  line-height:1.85;
  color:#C9D6E8;
  max-width:30em;
}
.footer h3{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:.4px;
}
.footer__links li{margin-bottom:10px;}
.footer__links a,
.footer__contact a{
  color:#C9D6E8;
  font-size:13.5px;
  line-height:1.7;
}
.footer__links a:hover,
.footer__contact a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer__contact li{
  margin-bottom:10px;
  font-size:13.5px;
  line-height:1.7;
  color:#C9D6E8;
}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  justify-content:space-between;
  font-size:13px;
  line-height:1.7;
  color:#A9BAD3;
}
.footer__disclaimer{
  padding-bottom:34px;
  font-size:13px;
  line-height:1.7;
  color:#8FA3C0;
  max-width:62em;
}
/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav__menu{gap:24px;}
}
@media (max-width:1023px){
  .nav__menu{display:none;}
  .nav__burger{display:grid;}
  .nav__actions .btn--primary{display:none;}
  .hero{padding:72px 0 64px;}
  .hero__inner{
    grid-template-columns:1fr;
    gap:44px;
    min-height:0;
  }
  .hero__card--cover{position:static;width:100%;margin-top:20px;}
  .section{padding:72px 0;}
  .section--tight{padding-top:0;}
  .solve__row,
  .solve__row--reverse{
    grid-template-columns:1fr;
    gap:28px;
    padding:36px 0;
  }
  .solve__row--reverse .solve__media{order:0;}
  .faq__layout{grid-template-columns:1fr;gap:36px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .quote-grid{grid-template-columns:1fr;}
  .footer__main{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px;}
  .cta__inner{padding:64px 0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .topbar__inner{height:auto;padding:9px 0;flex-wrap:wrap;gap:6px 14px;}
  .topbar{font-size:12.5px;}
  .nav{height:64px;}
  .nav__name{font-size:15px;}
  .nav__icon{display:none;}
  .hero h1{font-size:28px;}
  .hero__sub{font-size:16px;}
  .hero__cta .btn{flex:1 1 auto;}
  .stat-row li{padding-right:18px;margin-right:18px;}
  .stat-row strong{font-size:26px;}
  .section{padding:56px 0;}
  .section__head{flex-direction:column;align-items:flex-start;gap:14px;}
  .section__head h2,
  .faq__intro h2,
  .cta h2{font-size:22px;}
  .pain__item{grid-template-columns:1fr;gap:10px;padding:26px 0;}
  .pain__num{font-size:38px;}
  .post-grid{grid-template-columns:1fr;}
  .timeline{padding-left:28px;}
  .timeline__item::before{left:-24px;}
  .timeline__year{font-size:26px;}
  .faq__q{padding:18px 20px;font-size:15px;}
  .faq__a p{padding:0 20px 20px;}
  .quote-card{padding:26px 22px 24px;}
  .cta__inner{padding:56px 0;flex-direction:column;align-items:flex-start;}
  .cta__actions{width:100%;}
  .cta__actions .btn{flex:1 1 100%;}
  .footer__main{grid-template-columns:1fr;gap:30px;padding:44px 0 28px;}
}
@media (max-width:480px){
  .hero__cta .btn{width:100%;}
  .stat-row{flex-direction:column;gap:16px;}
  .stat-row li{border-right:0;padding-right:0;margin-right:0;border-bottom:1px solid var(--line);padding-bottom:14px;}
  .stat-row li:last-child{border-bottom:0;padding-bottom:0;}
  .trust__list{gap:10px 20px;}
  .trust__list li{font-size:13px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0E2F5C;
  --brand-700:#17457F;
  --brand-500:#2D6FC0;
  --brand-100:#E3EDF9;
  --accent:#D9482F;
  --teal:#0FA98F;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#0E1B2C;
  --ink-2:#5A6B80;
  --ink-3:#8A97A8;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --sh-1:0 1px 2px rgba(14,47,92,.06),0 8px 24px -12px rgba(14,47,92,.12);
  --sh-2:0 2px 4px rgba(14,47,92,.08),0 18px 40px -16px rgba(14,47,92,.20);
  --container:1200px;
  --gap:24px;
  --section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部细条 ---------- */
.topbar{
  background:rgba(227,237,249,.4);
  border-bottom:1px solid var(--line);
  font-size:13px;
  line-height:36px;
  color:var(--ink-2);
}
.topbar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:36px;
}
.topbar__links{display:flex;align-items:center;gap:18px;}
.topbar__links a{color:var(--ink-2);}
.topbar__links a:hover{color:var(--brand-700);}
.topbar__dot{color:var(--line);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  height:72px;
}
.nav__logo{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-weight:700;
  font-size:17px;
  letter-spacing:.2px;
  white-space:nowrap;
}
.nav__logo:hover{color:var(--ink);}
.nav__mark{display:inline-flex;align-items:center;}
.nav__name{line-height:1.2;}
.nav__menu{
  display:flex;
  align-items:center;
  gap:30px;
  margin-left:auto;
}
.nav__link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--ink);
  line-height:1.4;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.nav__link:hover{color:var(--brand-700);}
.nav__link:hover::after,
.nav__link.is-active::after{transform:scaleX(1);}
.nav__link.is-active{color:var(--brand-700);font-weight:600;}
.nav__actions{display:flex;align-items:center;gap:16px;}
.nav__icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--brand-700);
  transition:background .2s ease,border-color .2s ease;
}
.nav__icon:hover{background:var(--brand-100);border-color:var(--brand-100);color:var(--brand-700);}
.nav__burger{
  display:none;
  width:44px;
  height:44px;
  border-radius:10px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  border:1px solid var(--line);
}
.nav__burger span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.nav__burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav__burger.is-open span:nth-child(2){opacity:0;}
.nav__burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav__mask{
  position:fixed;
  inset:0;
  background:rgba(14,47,92,.4);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:70;
}
.nav__mask.is-open{opacity:1;visibility:visible;}
.nav__panel{
  position:fixed;
  top:0;
  right:0;
  width:min(320px,86vw);
  height:100%;
  background:var(--surface);
  transform:translateX(102%);
  transition:transform .28s ease;
  z-index:80;
  padding:22px 22px 28px;
  display:flex;
  flex-direction:column;
  box-shadow:var(--sh-2);
}
.nav__panel.is-open{transform:translateX(0);}
.nav__panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
  font-weight:700;
  font-size:15px;
}
.nav__panel-close{
  width:36px;height:36px;
  border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-2);
}
.nav__panel-links{display:flex;flex-direction:column;padding:8px 0;}
.nav__panel-links a{
  display:block;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink);
  font-size:15px;
}
.nav__panel-links a.is-active{color:var(--brand-700);font-weight:600;}
.nav__panel-cta{margin-top:auto;padding-top:20px;}
.nav__panel-cta .btn{width:100%;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:14px 28px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn--primary{background:var(--brand-700);color:#fff;}
.btn--primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn--primary:active{transform:none;}
.btn--ghost{background:var(--surface);color:var(--brand-700);border:1px solid var(--brand-700);}
.btn--ghost:hover{background:var(--brand-100);color:var(--brand-700);}
.btn--light{background:#fff;color:var(--brand-900);}
.btn--light:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-1px);}
.btn--outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55);}
.btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn--sm{height:40px;padding:10px 20px;font-size:14px;border-radius:8px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none!important;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
  border-bottom:1px solid rgba(45,111,192,.4);
  padding-bottom:2px;
}
.link-arrow:hover{color:var(--accent);border-bottom-color:rgba(217,72,47,.5);}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  min-height:320px;
  display:flex;
  align-items:center;
  overflow:hidden;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(14,47,92,.88);
}
.cat-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;}
.cat-hero__crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:rgba(227,237,249,.82);
  margin-bottom:18px;
}
.cat-hero__crumb a{color:rgba(227,237,249,.82);}
.cat-hero__crumb a:hover{color:#fff;}
.cat-hero__crumb span{color:rgba(227,237,249,.5);}
.cat-hero__crumb strong{color:#fff;font-weight:600;}
.cat-hero__badge{
  display:inline-block;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.14);
  color:#E3EDF9;
  font-size:13px;
  font-weight:500;
  letter-spacing:.4px;
  margin-bottom:18px;
}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.25;
  font-weight:700;
  color:#fff;
  max-width:22em;
}
.cat-hero p{
  margin-top:16px;
  max-width:44em;
  font-size:16px;
  line-height:1.8;
  color:rgba(227,237,249,.9);
}
.cat-hero__meta{
  display:flex;
  flex-wrap:wrap;
  gap:14px 28px;
  margin-top:26px;
  font-size:13px;
  color:#C9D6E8;
}
.cat-hero__meta li{display:flex;align-items:center;gap:8px;}
.cat-hero__meta b{color:#fff;font-size:18px;font-weight:700;}

/* ---------- 分类主体：锚点 + 内容流 ---------- */
.cat-body{padding:var(--section) 0;}
.cat-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.cat-aside{
  position:sticky;
  top:104px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:22px 20px;
}
.cat-aside__title{
  font-size:13px;
  font-weight:600;
  letter-spacing:.6px;
  color:var(--ink-3);
  padding-bottom:12px;
  margin-bottom:6px;
  border-bottom:1px solid var(--line);
}
.cat-aside__nav{display:flex;flex-direction:column;}
.cat-aside__nav a{
  display:block;
  position:relative;
  padding:11px 0 11px 14px;
  font-size:14px;
  color:var(--ink-2);
  border-left:2px solid transparent;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.cat-aside__nav a:hover{color:var(--brand-700);background:rgba(227,237,249,.4);}
.cat-aside__nav a.is-active{
  color:var(--brand-700);
  font-weight:600;
  border-left-color:var(--accent);
  background:rgba(227,237,249,.5);
}
.cat-aside__tip{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  line-height:1.7;
  color:var(--ink-3);
}
.cat-aside__tip strong{display:block;color:var(--ink-2);font-weight:600;margin-bottom:4px;}

.cat-flow{display:flex;flex-direction:column;gap:72px;min-width:0;}
.cat-section{scroll-margin-top:104px;}
.cat-section__head{margin-bottom:28px;}
.cat-section__label{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.6px;
  color:var(--brand-500);
  margin-bottom:10px;
}
.cat-section h2{
  position:relative;
  font-size:28px;
  line-height:1.35;
  font-weight:600;
  color:var(--ink);
  padding-left:14px;
}
.cat-section h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.28em;
  bottom:.28em;
  width:4px;
  border-radius:2px;
  background:var(--brand-500);
}
.cat-section h3{
  font-size:20px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink);
  margin-bottom:10px;
}
.cat-section p{font-size:16px;color:var(--ink-2);}
.cat-section p + p{margin-top:18px;}
.cat-section p strong{color:var(--ink);font-weight:600;}

.cat-intro{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:36px;
  align-items:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:32px;
}
.cat-intro__figure{margin:0;}
.cat-intro__figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
}
.cat-intro__figure figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--ink-3);
  text-align:center;
}

/* 要点清单 */
.check-list{
  display:grid;
  gap:14px;
  margin-top:22px;
}
.check-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:18px 22px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.check-list li:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.check-list__mark{
  flex:0 0 auto;
  width:22px;height:22px;
  margin-top:4px;
  border-radius:50%;
  background:rgba(15,169,143,.12);
  color:var(--teal);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
}
.check-list__text{font-size:15px;color:var(--ink-2);}
.check-list__text b{display:block;color:var(--ink);font-size:16px;font-weight:600;margin-bottom:2px;}

/* 步骤时间轴 */
.steps{position:relative;margin-top:8px;padding-left:32px;}
.steps::before{
  content:"";
  position:absolute;
  left:11px;top:8px;bottom:8px;
  width:2px;
  background:var(--line);
}
.steps li{position:relative;padding-bottom:28px;}
.steps li:last-child{padding-bottom:0;}
.steps__dot{
  position:absolute;
  left:-32px;
  top:4px;
  width:24px;height:24px;
  border-radius:50%;
  background:var(--surface);
  border:2px solid var(--accent);
  color:var(--accent);
  font-size:12px;
  font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  line-height:1;
}
.steps h3{font-size:18px;margin-bottom:6px;}
.steps p{font-size:15px;}

/* 列表行 */
.list-rows{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--surface);
  box-shadow:var(--sh-1);
  overflow:hidden;
  margin-top:6px;
}
.list-rows__item{
  position:relative;
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
  padding:20px 26px 20px 30px;
  border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.list-rows__item:last-child{border-bottom:0;}
.list-rows__item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--brand-500);
  opacity:0;
  transition:opacity .2s ease;
}
.list-rows__item:hover{background:rgba(227,237,249,.4);}
.list-rows__item:hover::before{opacity:1;}
.list-rows__main{min-width:0;flex:1;}
.list-rows__title{
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
}
.list-rows__desc{
  font-size:14px;
  color:var(--ink-2);
  line-height:1.7;
  margin-top:2px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.list-rows__tag{
  flex:0 0 auto;
  font-size:12px;
  font-weight:500;
  color:var(--teal);
  background:rgba(15,169,143,.12);
  border-radius:999px;
  padding:5px 12px;
  line-height:1.4;
}

/* 安全卡片 */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
  margin-top:6px;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:28px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.card__num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:10px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.card h3{font-size:17px;margin-bottom:8px;}
.card p{font-size:14px;line-height:1.75;color:var(--ink-2);}

/* FAQ */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,3fr) minmax(0,7fr);
  gap:44px;
  align-items:start;
}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.faq-item__q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  padding:20px 28px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
}
.faq-item__q:hover{background:rgba(227,237,249,.4);}
.faq-item__icon{
  flex:0 0 auto;
  width:24px;height:24px;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--brand-700);
  font-size:16px;
  line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item.is-open .faq-item__icon{
  transform:rotate(45deg);
  background:var(--brand-100);
}
.faq-item__a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item__a p{
  padding:0 28px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
}
.faq-item.is-open{border-color:rgba(45,111,192,.35);}

/* CTA */
.cta-band{
  position:relative;
  overflow:hidden;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  padding:72px 0;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(14,47,92,.88);
}
.cta-band .container{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-band h2{
  font-size:28px;
  line-height:1.35;
  font-weight:600;
  color:#fff;
}
.cta-band p{
  margin-top:10px;
  font-size:15px;
  color:rgba(227,237,249,.9);
  max-width:40em;
}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);
  color:#C9D6E8;
  padding:64px 0 28px;
  font-size:14px;
}
.footer__main{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
}
.footer__logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer__logo .nav__name{color:#fff;font-weight:700;font-size:16px;}
.footer__brand p{font-size:13px;line-height:1.8;color:#9FB3CE;max-width:32em;}
.site-footer h3{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer__links,.footer__contact{display:flex;flex-direction:column;gap:10px;}
.site-footer a{color:#C9D6E8;font-size:13px;}
.site-footer a:hover{color:#fff;text-decoration:underline;}
.footer__contact li{font-size:13px;color:#9FB3CE;line-height:1.7;}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#9FB3CE;
}
.footer__disclaimer{
  margin-top:16px;
  font-size:13px;
  line-height:1.7;
  color:#8DA3C1;
  max-width:80em;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .cat-layout{grid-template-columns:220px minmax(0,1fr);gap:36px;}
}
@media (max-width:1023px){
  :root{--section:72px;}
  .nav__menu{display:none;}
  .nav__actions .nav__icon{display:none;}
  .nav__burger{display:inline-flex;}
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .cat-aside{position:static;top:auto;}
  .cat-aside__nav{
    flex-direction:row;
    gap:8px;
    overflow-x:auto;
    padding-bottom:6px;
    -webkit-overflow-scrolling:touch;
  }
  .cat-aside__nav a{
    white-space:nowrap;
    border-left:0;
    border-bottom:2px solid transparent;
    padding:8px 4px;
  }
  .cat-aside__nav a.is-active{border-left:0;border-bottom-color:var(--accent);background:transparent;}
  .cat-intro{grid-template-columns:minmax(0,1fr);}
  .cat-intro__figure{order:-1;}
  .cat-intro__figure img{aspect-ratio:16/9;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer__main{grid-template-columns:1fr 1fr;}
  .cat-flow{gap:56px;}
}
@media (max-width:767px){
  :root{--section:56px;}
  .container{padding:0 20px;}
  .topbar{display:none;}
  .nav{height:64px;gap:16px;}
  .nav__name{font-size:15px;}
  .nav__actions .btn{display:none;}
  .cat-hero{min-height:auto;}
  .cat-hero .container{padding-top:40px;padding-bottom:40px;}
  .cat-hero__meta{gap:10px 20px;}
  .cat-intro{padding:22px;}
  .cat-section h2{font-size:22px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .list-rows__item{flex-direction:column;align-items:flex-start;gap:8px;padding:18px 20px 18px 24px;}
  .list-rows__desc{white-space:normal;}
  .cta-band{padding:56px 0;}
  .cta-band h2{font-size:22px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{flex:1 1 auto;}
  .footer__main{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:28px;}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:480px){
  .btn{width:100%;}
  .cat-hero h1{font-size:26px;}
  .steps{padding-left:26px;}
  .steps__dot{left:-26px;width:20px;height:20px;font-size:11px;}
}

/* roulang page: article */
:root{
  --brand-900:#0E2F5C;
  --brand-700:#17457F;
  --brand-500:#2D6FC0;
  --brand-100:#E3EDF9;
  --accent:#D9482F;
  --teal:#0FA98F;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#0E1B2C;
  --ink-2:#5A6B80;
  --ink-3:#8A97A8;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --sh-1:0 1px 2px rgba(14,47,92,.06), 0 8px 24px -12px rgba(14,47,92,.12);
  --sh-2:0 2px 4px rgba(14,47,92,.08), 0 18px 40px -16px rgba(14,47,92,.20);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--ink);letter-spacing:.1px}
p{margin:0}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease,background .18s ease,border-color .18s ease}
a:hover{color:var(--accent)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header__inner{display:flex;align-items:center;gap:32px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.nav__mark{display:inline-flex;width:34px;height:34px;flex:0 0 auto}
.nav__name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;white-space:nowrap}
.nav__menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav__link{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--ink)}
.nav__link:hover{color:var(--brand-700)}
.nav__link.is-active{color:var(--brand-700);font-weight:600}
.nav__link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--accent);border-radius:2px}
.nav__actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:8px}
.nav__panel-cta{display:none}
.nav__toggle{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:6px;background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer}
.nav__toggle span{display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px;transition:transform .22s ease}
.nav__toggle.is-open span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav__toggle.is-open span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}
.nav__scrim{position:fixed;inset:0;background:rgba(14,47,92,.42);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:85}
.nav__scrim.is-open{opacity:1;visibility:visible}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:10px;font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.btn--primary{background:var(--brand-700);color:#fff}
.btn--primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn--primary:active{transform:none}
.btn--ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-700)}
.btn--ghost:hover{background:var(--brand-100);color:var(--brand-700)}
.btn--light{background:#fff;color:var(--brand-700)}
.btn--light:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn--sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- tag ---------- */
.tag{display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:500;line-height:1.4;transition:background .18s ease,color .18s ease}
a.tag:hover{background:var(--brand-500);color:#fff}
.tag--teal{background:rgba(15,169,143,.12);color:var(--teal)}
a.tag--teal:hover{background:var(--teal);color:#fff}

/* ---------- page band / breadcrumb / article head ---------- */
.page-band{background:#fff;border-bottom:1px solid var(--line);padding:26px 0 36px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;line-height:1.6;color:var(--ink-3)}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb__sep{color:#B9C4D2}
.breadcrumb__current{max-width:min(520px,68vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-3)}
.article-head{margin-top:22px;max-width:920px}
.article-head h1{font-size:clamp(26px,3.6vw,40px);line-height:1.3;font-weight:700;margin:18px 0 20px}
.article-meta{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px;color:var(--ink-3)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding:48px 0 72px}
.article-main{min-width:0}
.article-body{max-width:800px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:44px 48px;box-shadow:var(--sh-1)}
.article-side{display:none}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px 20px;box-shadow:var(--sh-1)}
.side-card + .side-card{margin-top:20px}
.side-card h3{font-size:15px;font-weight:600;letter-spacing:.3px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.side-list li + li{border-top:1px solid var(--line)}
.side-list a{display:block;padding:11px 0;font-size:14px;line-height:1.6;color:var(--ink-2)}
.side-list a:hover{color:var(--brand-700)}
.side-note{font-size:14px;line-height:1.8;color:var(--ink-2)}

/* ---------- article content ---------- */
.article-content{font-size:16px;line-height:1.85;color:#1C2B3D;overflow-wrap:break-word;word-break:break-word}
.article-content > *:first-child{margin-top:0}
.article-content p{margin:0 0 1.2em}
.article-content h2{font-size:22px;line-height:1.4;font-weight:600;color:var(--ink);margin:2em 0 .8em;padding-left:14px;border-left:4px solid var(--brand-500)}
.article-content h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink);margin:1.6em 0 .6em}
.article-content h4{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink);margin:1.4em 0 .5em}
.article-content ul,.article-content ol{margin:0 0 1.2em;padding-left:1.35em}
.article-content ul{list-style:square}
.article-content ol{list-style:decimal}
.article-content li{margin:.45em 0}
.article-content ul li::marker{color:var(--brand-500)}
.article-content ol li::marker{color:var(--brand-500);font-weight:600}
.article-content img{border-radius:12px;border:1px solid var(--line);margin:1.6em auto}
.article-content figure{margin:1.6em 0;max-width:100%;overflow-x:auto}
.article-content figcaption{text-align:center;font-size:13px;line-height:1.7;color:var(--ink-3);margin-top:10px}
.article-content blockquote{margin:1.6em 0;padding:16px 20px;background:var(--brand-100);border-left:3px solid var(--accent);border-radius:var(--r-sm);color:var(--ink-2)}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content a{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-content a:hover{color:var(--accent)}
.article-content strong{color:var(--ink);font-weight:600}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-content table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0}
.article-content th,.article-content td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.article-content th{background:var(--brand-100);font-weight:600;color:var(--ink)}
.article-empty{text-align:center;padding:36px 0 12px}
.article-empty__title{font-size:20px;font-weight:600;color:var(--ink);margin-bottom:10px}
.article-empty__desc{font-size:14px;line-height:1.8;color:var(--ink-3);margin-bottom:26px}

/* ---------- article foot ---------- */
.article-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line)}
.article-foot__tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.article-foot__label{font-size:13px;color:var(--ink-3);margin-right:2px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- sections ---------- */
.section--related{padding:0 0 72px}
.section--cta{padding:0 0 88px}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section__head h2{font-size:28px;line-height:1.35;font-weight:600}
.section__head p{font-size:14px;color:var(--ink-3);margin-top:8px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--brand-700);border-bottom:2px solid transparent;padding-bottom:2px;white-space:nowrap}
.link-arrow:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.card__media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);border-bottom:1px solid var(--line)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{display:flex;flex-direction:column;flex:1;padding:22px 24px 24px}
.card__title{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink);margin:12px 0 10px;transition:color .18s ease}
.card__title:hover,.card:hover .card__title{color:var(--brand-700)}
.card__desc{font-size:14px;line-height:1.7;color:var(--ink-2);margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3)}
.card__more{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:500;color:var(--brand-700)}
.card__more:hover{color:var(--accent)}

/* ---------- CTA ---------- */
.cta{position:relative;border-radius:var(--r-lg);overflow:hidden;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat}
.cta::before{content:"";position:absolute;inset:0;background:rgba(14,47,92,.88)}
.cta__inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;padding:52px 48px}
.cta h2{color:#fff;font-size:26px;line-height:1.4;font-weight:600}
.cta p{color:#C9D6E8;font-size:15px;line-height:1.8;margin-top:10px;max-width:660px}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#C9D6E8;margin-top:0}
.footer__main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px}
.footer__logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer__logo .nav__name{color:#fff;font-size:17px;font-weight:700}
.footer__brand p{font-size:14px;line-height:1.85;color:#A8BCD8;max-width:340px}
.site-footer h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.5px;margin-bottom:16px}
.footer__links,.footer__contact{font-size:14px;line-height:2}
.footer__links a{color:#C9D6E8}
.footer__links a:hover{color:#fff;text-decoration:underline}
.footer__contact li{color:#A8BCD8}
.footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;font-size:13px;line-height:1.7;color:#8FA6C4}
.footer__disclaimer{font-size:13px;line-height:1.7;color:#7C93B2;margin:0 0 40px;max-width:1040px}

/* ---------- responsive ---------- */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:48px}
  .article-body{max-width:none;margin:0}
  .article-side{display:block;position:sticky;top:92px;align-self:start}
}
@media (max-width:1023px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__main{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .article-body{padding:36px 34px}
  .section__head h2{font-size:24px}
}
@media (max-width:900px){
  .header__inner{gap:16px;height:64px}
  .nav__actions .btn{display:none}
  .nav__toggle{display:inline-flex}
  .nav__menu{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,320px);
    margin:0;padding:88px 24px 24px;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;overflow-y:auto;transform:translateX(100%);
    transition:transform .25s ease;box-shadow:-16px 0 40px rgba(14,47,92,.14);z-index:90;
  }
  .nav__menu.is-open{transform:translateX(0)}
  .nav__link{padding:16px 0;font-size:16px;border-bottom:1px solid var(--line)}
  .nav__link.is-active::after{display:none}
  .nav__link.is-active{color:var(--accent)}
  .nav__panel-cta{display:inline-flex;margin-top:24px;width:100%}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .page-band{padding:20px 0 28px}
  .article-head{margin-top:16px}
  .article-head h1{margin:14px 0 16px}
  .article-layout{padding:28px 0 48px;gap:28px}
  .article-body{padding:26px 20px;border-radius:var(--r-md)}
  .article-content h2{font-size:19px}
  .article-content h3{font-size:17px}
  .article-content blockquote{padding:14px 16px}
  .article-foot{flex-direction:column;align-items:flex-start}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .section--related{padding:0 0 56px}
  .section--cta{padding:0 0 64px}
  .section__head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .section__head h2{font-size:22px}
  .cta__inner{padding:34px 22px}
  .cta h2{font-size:21px}
  .cta__actions{width:100%}
  .cta__actions .btn{flex:1 1 100%}
  .footer__main{grid-template-columns:minmax(0,1fr);gap:28px;padding:44px 0 28px}
  .footer__brand p{max-width:none}
  .footer__bottom{flex-direction:column;gap:8px;padding:18px 0}
  .footer__disclaimer{margin-bottom:32px}
}
@media (max-width:480px){
  .brand .nav__name{font-size:15px}
  .btn{width:100%;padding:0 20px}
  .btn--sm{width:auto}
  .article-empty .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --brand-900:#0E2F5C;
  --brand-700:#17457F;
  --brand-500:#2D6FC0;
  --brand-100:#E3EDF9;
  --accent:#D9482F;
  --teal:#0FA98F;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#0E1B2C;
  --ink-2:#5A6B80;
  --ink-3:#8A97A8;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --sh-1:0 1px 2px rgba(14,47,92,.06), 0 8px 24px -12px rgba(14,47,92,.12);
  --sh-2:0 2px 4px rgba(14,47,92,.08), 0 18px 40px -16px rgba(14,47,92,.20);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-700);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-sm) 0;z-index:999;}
.skip-link:focus{left:0;color:#fff;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部细条 ---------- */
.topbar{background:rgba(227,237,249,.4);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-2);}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;min-height:36px;gap:16px;}
.topbar__note{letter-spacing:.2px;}
.topbar__link{font-size:13px;color:var(--brand-700);font-weight:500;}
.topbar__link:hover{color:var(--accent);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.nav__brand{display:flex;align-items:center;gap:10px;color:var(--ink);}
.nav__brand:hover{color:var(--brand-700);}
.nav__mark{display:inline-flex;flex:0 0 auto;}
.nav__name{font-size:17px;font-weight:600;letter-spacing:.4px;white-space:nowrap;}
.nav__menu{display:flex;align-items:center;gap:28px;}
.nav__link{
  position:relative;font-size:15px;color:var(--ink);padding:4px 0;font-weight:500;
}
.nav__link::after{
  content:"";position:absolute;left:0;right:100%;bottom:-6px;height:2px;background:var(--accent);
  transition:right .22s ease;
}
.nav__link:hover{color:var(--brand-700);}
.nav__link:hover::after{right:0;}
.nav__link.is-active{color:var(--brand-700);}
.nav__link.is-active::after{right:0;}
.nav__actions{display:flex;align-items:center;gap:14px;}
.nav__icon{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:999px;color:var(--brand-700);border:1px solid transparent;
}
.nav__icon:hover{background:var(--brand-100);color:var(--brand-700);}
.nav__toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;border-radius:var(--r-sm);
  flex-direction:column;justify-content:center;align-items:center;gap:6px;
}
.nav__toggle span{display:block;width:22px;height:2px;background:var(--brand-900);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.nav__toggle[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg);}
.nav__toggle[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg);}

.nav-drawer{
  position:fixed;inset:0;z-index:200;pointer-events:none;
}
.nav-drawer__mask{
  position:absolute;inset:0;background:rgba(14,47,92,.4);opacity:0;transition:opacity .24s ease;
}
.nav-drawer__panel{
  position:absolute;top:0;right:0;height:100%;width:min(320px,86%);
  background:var(--surface);box-shadow:var(--sh-2);
  transform:translateX(100%);transition:transform .26s ease;
  padding:24px 22px;display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;
}
.nav-drawer.is-open{pointer-events:auto;}
.nav-drawer.is-open .nav-drawer__mask{opacity:1;}
.nav-drawer.is-open .nav-drawer__panel{transform:translateX(0);}
.nav-drawer__title{font-size:13px;color:var(--ink-3);letter-spacing:1px;margin-bottom:6px;}
.nav-drawer__link{
  display:block;padding:14px 4px;font-size:16px;color:var(--ink);font-weight:500;
  border-bottom:1px solid var(--line);
}
.nav-drawer__link.is-active{color:var(--brand-700);}
.nav-drawer__foot{margin-top:auto;padding-top:20px;}
.nav-drawer__close{
  position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:20px;line-height:1;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:10px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .2s ease;white-space:nowrap;text-align:center;
}
.btn--primary{background:var(--brand-700);color:#fff;}
.btn--primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn--primary:active{transform:none;}
.btn--ghost{background:var(--surface);color:var(--brand-700);border-color:var(--brand-700);}
.btn--ghost:hover{background:var(--brand-100);color:var(--brand-700);}
.btn--light{background:#fff;color:var(--brand-900);}
.btn--light:hover{background:var(--brand-100);color:var(--brand-900);}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn--sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px;}
.btn--block{width:100%;}

.link-arrow{font-weight:600;color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.link-arrow:hover{color:var(--accent);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--bg);}
.hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;
  opacity:.2;
}
.hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(246,248,251,1) 0%,rgba(246,248,251,.88) 52%,rgba(246,248,251,.55) 100%);
}
.hero__inner{position:relative;padding:64px 0 60px;min-height:320px;display:flex;flex-direction:column;justify-content:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb__sep{color:var(--ink-3);}
.breadcrumb__current{color:var(--brand-700);font-weight:500;}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  background:rgba(15,169,143,.12);color:var(--teal);
  font-size:13px;font-weight:500;padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero__badge i{width:6px;height:6px;border-radius:999px;background:var(--teal);display:block;}
.hero h1{font-size:clamp(30px,3.6vw,44px);line-height:1.25;font-weight:700;max-width:16em;}
.hero__lead{margin-top:18px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:38em;}
.hero__actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}
.hero__meta{margin-top:18px;font-size:13px;color:var(--ink-3);}
.hero__stats{display:flex;gap:0;margin-top:34px;flex-wrap:wrap;}
.hero__stat{padding:0 28px;border-left:1px solid var(--line);}
.hero__stat:first-child{padding-left:0;border-left:0;}
.hero__stat b{display:block;font-size:28px;font-weight:700;color:var(--brand-700);line-height:1.2;}
.hero__stat span{display:block;font-size:13px;color:var(--ink-3);margin-top:4px;}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section--tint{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section__head{max-width:760px;margin-bottom:32px;}
.section__kicker{font-size:13px;font-weight:600;letter-spacing:2px;color:var(--brand-500);margin-bottom:12px;}
.section__title{font-size:28px;line-height:1.35;font-weight:600;position:relative;padding-left:16px;}
.section__title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand-500);}
.section__desc{margin-top:16px;font-size:15px;color:var(--ink-2);line-height:1.85;}
.section__head--split{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;}

/* ---------- 概览 ---------- */
.overview{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start;}
.overview__text p+p{margin-top:18px;}
.overview__text p{font-size:16px;color:var(--ink-2);line-height:1.9;}
.overview__card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;
}
.overview__card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-bottom:1px solid var(--line);}
.overview__card-body{padding:24px 26px 26px;}
.overview__card-body h3{font-size:18px;margin-bottom:10px;}
.overview__card-body p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.overview__facts{display:flex;gap:20px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.overview__fact b{display:block;font-size:20px;color:var(--brand-700);font-weight:700;}
.overview__fact span{font-size:12px;color:var(--ink-3);}

/* ---------- 要点清单 ---------- */
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 32px;}
.checklist__item{
  display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);
  border-left:3px solid var(--brand-500);
  border-radius:var(--r-sm);padding:18px 22px;
  transition:box-shadow .2s ease,transform .2s ease;
}
.checklist__item:hover{box-shadow:var(--sh-1);transform:translateY(-2px);}
.checklist__icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--brand-100);
  color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:3px;
}
.checklist__item h3{font-size:16px;margin-bottom:4px;}
.checklist__item p{font-size:14px;color:var(--ink-2);line-height:1.75;}

/* ---------- 步骤流 ---------- */
.flow{display:flex;flex-direction:column;gap:56px;}
.flow__item{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.flow__item--reverse .flow__media{order:2;}
.flow__media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-1);background:var(--surface);
}
.flow__media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.flow__index{
  display:inline-flex;align-items:baseline;gap:6px;
  font-size:32px;font-weight:700;color:var(--brand-500);line-height:1;margin-bottom:14px;
}
.flow__index small{font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:1px;}
.flow__body h3{font-size:20px;line-height:1.5;margin-bottom:12px;}
.flow__body p{font-size:15px;color:var(--ink-2);line-height:1.9;}
.flow__points{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.flow__points li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.flow__points li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--accent);opacity:.85;
}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;gap:12px;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.scene-card__tag{
  align-self:flex-start;font-size:12px;font-weight:600;color:var(--teal);
  background:rgba(15,169,143,.12);padding:4px 12px;border-radius:999px;
}
.scene-card h3{font-size:18px;line-height:1.5;}
.scene-card p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.scene-card ul{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;}
.scene-card li{font-size:13px;color:var(--ink-2);display:flex;gap:8px;line-height:1.7;}
.scene-card li span{color:var(--brand-500);font-weight:700;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq{display:flex;flex-direction:column;gap:12px;}
.faq__item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:box-shadow .2s ease;}
.faq__item:hover{box-shadow:var(--sh-1);}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 28px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq__q:hover{color:var(--brand-700);}
.faq__sign{
  flex:0 0 auto;width:24px;height:24px;position:relative;transition:transform .24s ease;
}
.faq__sign::before,.faq__sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-500);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq__sign::before{width:14px;height:2px;}
.faq__sign::after{width:2px;height:14px;}
.faq__item.is-open .faq__sign{transform:rotate(45deg);}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq__a p{padding:0 28px 22px;font-size:15px;color:var(--ink-2);line-height:1.85;}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;background:var(--brand-900);color:#fff;
}
.cta__bg{
  position:absolute;inset:0;background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;opacity:.14;
}
.cta__inner{position:relative;padding:80px 0;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta h2{font-size:28px;color:#fff;line-height:1.4;}
.cta p{margin-top:14px;font-size:15px;color:#C9D6E8;max-width:44em;line-height:1.85;}
.cta__actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#C9D6E8;font-size:14px;}
.footer__main{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:72px 0 48px;
}
.footer__logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer__logo .nav__name{color:#fff;font-size:17px;font-weight:600;}
.footer__brand p{font-size:14px;line-height:1.85;color:#C9D6E8;max-width:30em;}
.footer h3{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer__links{display:flex;flex-direction:column;gap:10px;}
.footer__links a{color:#C9D6E8;font-size:14px;}
.footer__links a:hover{color:#fff;text-decoration:underline;}
.footer__contact{display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:1.7;}
.footer__bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.16);padding:20px 0 0;font-size:13px;color:#9FB2CB;
}
.footer__disclaimer{
  font-size:13px;line-height:1.7;color:#8FA3BD;padding:16px 0 40px;max-width:70em;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav__menu{display:none;}
  .nav__toggle{display:flex;}
  .overview{grid-template-columns:1fr;gap:32px;}
  .flow__item{grid-template-columns:1fr;gap:28px;}
  .flow__item--reverse .flow__media{order:0;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .section{padding:72px 0;}
  .footer__main{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 40px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .topbar__inner{font-size:12px;}
  .hero__inner{padding:44px 0 40px;min-height:0;}
  .hero h1{font-size:28px;}
  .hero__lead{font-size:15px;}
  .hero__stats{margin-top:26px;gap:18px 0;}
  .hero__stat{padding:0 18px;}
  .hero__stat b{font-size:22px;}
  .section{padding:56px 0;}
  .section__title{font-size:22px;}
  .checklist{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;}
  .flow{gap:40px;}
  .faq__q{padding:18px 20px;font-size:15px;}
  .faq__a p{padding:0 20px 20px;}
  .cta__inner{padding:56px 0;}
  .cta h2{font-size:22px;}
  .footer__main{grid-template-columns:1fr;padding:48px 0 32px;}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .nav__name{font-size:15px;max-width:11em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
}
@media (max-width:480px){
  .hero__actions .btn,.cta__actions .btn{width:100%;}
  .hero__stat{border-left:0;padding:0 0 12px;width:50%;}
  .hero__stats{gap:0;}
  .btn{font-size:14px;}
}