/* roulang page: index */
:root{
  --c-primary:#1668D6;
  --c-primary-dark:#0F4FA8;
  --c-primary-light:#E8F1FE;
  --c-accent:#FF6A2B;
  --c-accent-dark:#E85818;
  --c-bg:#F6F9FC;
  --c-card:#FFFFFF;
  --c-border:#E4EBF3;
  --c-line:#EEF2F7;
  --c-title:#0F1B2A;
  --c-text:#3C4A5C;
  --c-muted:#7A8899;
  --c-success:#12A150;
  --c-warn:#E8A33D;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(15,27,42,.06),0 8px 24px rgba(15,27,42,.06);
  --sh-hover:0 12px 32px rgba(15,27,42,.10);
  --sh-nav:0 2px 10px rgba(15,27,42,.06);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-dark)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:700;line-height:1.3}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head__eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-primary);background:var(--c-primary-light);border-radius:999px;padding:3px 12px;margin-bottom:12px}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3}
.sec-head__lead{margin-top:12px;font-size:16px;color:var(--c-muted);max-width:660px}
.sec-head__more{flex:0 0 auto;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.sec-head__more svg{transition:transform .2s ease}
.sec-head__more:hover svg{transform:translateX(3px)}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--c-primary-light);border-bottom:1px solid var(--c-border)}
.topbar__inner{display:flex;align-items:center;gap:18px;height:38px;font-size:13px}
.topbar__domain{font-weight:700;color:var(--c-primary-dark);letter-spacing:.02em}
.topbar__tip{color:var(--c-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar__actions{margin-left:auto;display:flex;align-items:center;gap:16px;flex:0 0 auto}
.topbar__actions a{font-size:13px;font-weight:600}
.topbar__actions .is-strong{color:var(--c-accent-dark)}
.topbar__actions .is-strong:hover{color:var(--c-accent)}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-border);box-shadow:var(--sh-nav)}
.nav__inner{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;font-size:18px;font-weight:700;color:var(--c-title);letter-spacing:.01em}
.brand:hover{color:var(--c-title)}
.brand__mark{position:relative;width:28px;height:28px;border-radius:8px;background:linear-gradient(140deg,#2C7BE5,#0F4FA8);flex:0 0 auto;overflow:hidden}
.brand__mark::before{content:"";position:absolute;left:6px;top:6px;width:7px;height:16px;border-radius:3px;background:rgba(255,255,255,.92);transform:rotate(-14deg)}
.brand__mark::after{content:"";position:absolute;right:6px;top:9px;width:7px;height:10px;border-radius:3px;background:rgba(255,255,255,.55);transform:rotate(-14deg)}
.nav__menu{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav__menu > li{position:relative}
.nav__link{display:inline-flex;align-items:center;gap:6px;padding:8px 13px;border-radius:8px;font-size:15px;font-weight:500;color:var(--c-text);white-space:nowrap;transition:background .2s ease,color .2s ease}
.nav__link:hover{background:var(--c-primary-light);color:var(--c-primary-dark)}
.nav__link.is-active{color:var(--c-primary);background:var(--c-primary-light);font-weight:600}
.nav__link.is-active::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.nav__right{margin-left:auto;display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search{display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;border:1px solid var(--c-border);border-radius:var(--r-btn);background:var(--c-bg);width:212px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(22,104,214,.12)}
.search svg{flex:0 0 auto;color:var(--c-muted)}
.search input{border:0;background:transparent;width:100%;font-size:14px;outline:none}
.search input::placeholder{color:var(--c-muted)}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-border);border-radius:var(--r-btn);align-items:center;justify-content:center;color:var(--c-title)}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ============ 按钮体系 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;white-space:nowrap}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn--primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.26)}
.btn--primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,43,.32)}
.btn--secondary{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary)}
.btn--secondary:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-1px)}
.btn--ghost{background:var(--c-primary);color:#fff}
.btn--ghost:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px)}
.btn--sm{height:40px;padding:0 16px;font-size:14px}
.btn--lg{height:52px;padding:0 28px;font-size:16px}
.btn--block{width:100%}
.textlink{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary)}
.textlink svg{transition:transform .2s ease}
.textlink:hover svg{transform:translateX(3px)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);padding:72px 0 88px}
.hero::before{content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(22,104,214,.13),rgba(22,104,214,0) 68%);pointer-events:none}
.hero::after{content:"";position:absolute;left:-160px;bottom:-180px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,106,43,.10),rgba(255,106,43,0) 70%);pointer-events:none}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary-dark);background:var(--c-primary-light);border-radius:999px;padding:6px 14px;margin-bottom:20px}
.hero__eyebrow span.dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent)}
.hero h1{font-size:clamp(30px,4.6vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.hero__sub{margin-top:18px;font-size:17px;line-height:1.75;color:var(--c-text);max-width:540px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:500;color:var(--c-text);background:#fff;border:1px solid var(--c-border);border-radius:999px;padding:6px 14px}
.chip svg{color:var(--c-success);flex:0 0 auto}
.hero__media{position:relative}
.hero__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;box-shadow:var(--sh-card);background:#DFE8F3}
.hero__media::after{content:"";position:absolute;inset:0;border-radius:16px;background:linear-gradient(200deg,rgba(22,104,214,.10),rgba(15,27,42,.16));pointer-events:none}
.hero__float{position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-hover);padding:14px 18px;display:flex;align-items:center;gap:12px;z-index:2}
.hero__float b{font-size:22px;font-weight:700;color:var(--c-primary-dark);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.hero__float small{display:block;font-size:12px;color:var(--c-muted);line-height:1.5}

/* ============ 指标条 ============ */
.metrics{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.metrics__inner{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:34px 24px;border-left:1px solid var(--c-line)}
.metric:first-child{border-left:0;padding-left:0}
.metric b{display:block;font-size:32px;font-weight:700;color:var(--c-title);font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.15}
.metric b em{font-style:normal;font-size:18px;color:var(--c-primary);margin-left:2px}
.metric span{display:block;margin-top:8px;font-size:13px;color:var(--c-muted)}

/* ============ 故事 / 理念 ============ */
.story__row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.story__row + .story__row{margin-top:64px}
.story__row--reverse .story__media{order:2}
.story__media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;box-shadow:var(--sh-card);background:#DFE8F3}
.story__text h3{font-size:22px;margin-bottom:14px}
.story__text p{font-size:16px;line-height:1.9;color:var(--c-text)}
.story__list{margin-top:20px;display:grid;gap:12px}
.story__list li{display:flex;gap:10px;font-size:15px;color:var(--c-text);align-items:flex-start}
.story__list li i{flex:0 0 auto;width:20px;height:20px;border-radius:6px;background:var(--c-primary-light);color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-style:normal;font-weight:700;margin-top:3px}

/* ============ 精选内容卡 ============ */
.feature-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:auto auto;gap:24px}
.fcard{position:relative;display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease}
.fcard:hover{box-shadow:var(--sh-hover);border-color:#BFD8F5;transform:translateY(-2px)}
.fcard__cover{position:relative;overflow:hidden;background:#DFE8F3}
.fcard__cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.fcard:hover .fcard__cover img{transform:scale(1.03)}
.fcard__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.fcard h3{font-size:19px;line-height:1.45}
.fcard:hover h3{color:var(--c-primary-dark)}
.fcard p{font-size:14px;line-height:1.75;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.fcard__foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted)}
.fcard--big{grid-row:span 2}
.fcard--big .fcard__cover{aspect-ratio:16/9}
.fcard--big h3{font-size:23px}
.fcard--big p{-webkit-line-clamp:3;font-size:15px}
.fcard--small .fcard__cover{aspect-ratio:16/9}
.fcard--small h3{font-size:16px}
.fcard--small .fcard__body{padding:16px 18px 18px;gap:8px}

.tag{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;color:var(--c-primary);background:var(--c-primary-light);border-radius:999px;padding:3px 10px}
.tag--accent{color:var(--c-accent-dark);background:#FFF0E8}
.tag--soft{color:var(--c-muted);background:#F1F5FA}

/* ============ 最新信息（CMS） ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease}
.news-card:hover{box-shadow:var(--sh-hover);border-color:#BFD8F5;transform:translateY(-2px)}
.news-card__cover{aspect-ratio:16/9;background:linear-gradient(140deg,#DCE9FA,#EEF4FC);position:relative;overflow:hidden}
.news-card__cover::before{content:"";position:absolute;left:18px;top:18px;width:46px;height:46px;border-radius:12px;background:rgba(22,104,214,.16)}
.news-card__cover::after{content:"";position:absolute;right:-24px;bottom:-30px;width:110px;height:110px;border-radius:50%;background:rgba(255,106,43,.14)}
.news-card:nth-child(3n+2) .news-card__cover{background:linear-gradient(140deg,#E6F0FC,#F5F9FE)}
.news-card:nth-child(3n+3) .news-card__cover{background:linear-gradient(140deg,#EDF3FB,#FFFFFF)}
.news-card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.news-card h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3{color:var(--c-primary-dark)}
.news-card__summary{font-size:14px;line-height:1.75;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted)}
.news-card__foot time{font-variant-numeric:tabular-nums}
.news-card__foot .textlink{font-size:13px}
.news-more{margin-top:36px;display:flex;justify-content:center;gap:12px;align-items:center}
.news-more__bar{height:6px;width:120px;border-radius:999px;background:#E1EAF5;position:relative;overflow:hidden}
.news-more__bar::after{content:"";position:absolute;left:0;top:0;height:100%;width:42%;border-radius:999px;background:var(--c-primary)}
.news-more span{font-size:13px;color:var(--c-muted)}
.empty-state{grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:64px 24px;background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-card);min-height:280px}
.empty-state__art{width:80px;height:80px;border-radius:22px;background:linear-gradient(140deg,#DCE9FA,#F2F7FD);position:relative;margin-bottom:20px}
.empty-state__art::before{content:"";position:absolute;left:18px;top:22px;width:44px;height:6px;border-radius:999px;background:#BBD3F0}
.empty-state__art::after{content:"";position:absolute;left:18px;top:38px;width:28px;height:6px;border-radius:999px;background:#D3E2F5}
.empty-state p{color:var(--c-muted);font-size:15px;margin-bottom:18px}

/* ============ 信任背书 ============ */
.trust{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start}
.trust__logos{display:flex;flex-wrap:wrap;gap:12px}
.logo-pill{display:inline-flex;align-items:center;gap:10px;height:56px;padding:0 20px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);color:#8698AC;font-size:14px;font-weight:600;filter:grayscale(1);transition:filter .25s ease,color .25s ease,border-color .25s ease}
.logo-pill:hover{filter:grayscale(0);color:var(--c-primary-dark);border-color:#BFD8F5}
.logo-pill i{width:22px;height:22px;border-radius:6px;background:#C9D7E8;display:inline-block;font-style:normal}
.trust__note{margin-top:22px;font-size:14px;color:var(--c-muted);line-height:1.8}
.trust__quotes{display:grid;gap:18px}
.quote{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:22px 24px 22px 26px;position:relative;box-shadow:var(--sh-card)}
.quote::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;background:var(--c-primary)}
.quote p{font-size:15px;line-height:1.85;color:var(--c-text)}
.quote footer{margin-top:14px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-muted)}
.quote footer b{color:var(--c-title);font-weight:600;font-size:14px}
.quote footer .avatar{width:32px;height:32px;border-radius:50%;background:var(--c-primary-light);color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex:0 0 auto}

/* ============ FAQ ============ */
.faq{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.faq__intro{position:sticky;top:110px}
.faq__intro h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:16px}
.faq__intro p{font-size:15px;color:var(--c-muted);line-height:1.85}
.faq__list{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card)}
.faq__item{border-bottom:1px solid var(--c-line)}
.faq__item:last-child{border-bottom:0}
.faq__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;padding:20px 24px;font-size:16px;font-weight:600;color:var(--c-title);transition:background .2s ease,color .2s ease}
.faq__q:hover{background:#FAFCFF;color:var(--c-primary-dark)}
.faq__icon{flex:0 0 auto;width:20px;height:20px;position:relative}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.faq__icon::before{left:0;top:9px;width:20px;height:2px}
.faq__icon::after{left:9px;top:0;width:2px;height:20px}
.faq__item.is-open .faq__icon::after{transform:rotate(90deg);opacity:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq__a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-text);margin:0}
.faq__item.is-open .faq__a{max-height:360px}

/* ============ CTA ============ */
.cta-band{background:linear-gradient(140deg,#EEF4FC 0%,#F6F9FC 62%,#FFF2EA 100%);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.cta-band__inner{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:64px 0}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px}
.cta-band p{font-size:15px;color:var(--c-text);max-width:480px}
.inline-form{display:flex;gap:8px;background:#fff;border:1px solid var(--c-border);border-radius:calc(var(--r-btn) + 4px);padding:6px;box-shadow:var(--sh-card)}
.inline-form input{flex:1;height:46px;border:1px solid transparent;background:var(--c-bg);border-radius:var(--r-btn);padding:0 16px;font-size:15px;outline:none;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.inline-form input::placeholder{color:var(--c-muted)}
.inline-form input:focus{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(22,104,214,.14)}
.form-note{margin-top:12px;font-size:13px;color:var(--c-muted)}

/* ============ 页脚 ============ */
.site-footer{background:#EEF3F9;border-top:1px solid var(--c-border);padding-top:64px}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer__brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-title);margin-bottom:16px}
.footer__brand .brand__mark{width:26px;height:26px;border-radius:8px}
.footer__desc{font-size:14px;line-height:1.85;color:var(--c-muted);max-width:330px}
.footer h4{font-size:15px;font-weight:700;color:var(--c-title);margin-bottom:18px}
.footer__links{display:grid;gap:11px}
.footer__links a{font-size:14px;color:var(--c-muted)}
.footer__links a:hover{color:var(--c-primary)}
.footer__contact{display:grid;gap:12px;font-size:14px;color:var(--c-muted)}
.footer__contact b{color:var(--c-title);font-weight:600}
.footer__bottom{margin-top:52px;border-top:1px solid #DDE6F0;padding:20px 0;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted)}
.footer__bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer__bottom a{color:var(--c-muted)}
.footer__bottom a:hover{color:var(--c-primary)}

.to-top{position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--c-border);box-shadow:var(--sh-card);display:flex;align-items:center;justify-content:center;color:var(--c-primary);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s ease,transform .25s ease,visibility .25s ease;z-index:70}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{box-shadow:var(--sh-hover);color:var(--c-primary-dark)}

/* ============ 移动端抽屉 ============ */
.mask{position:fixed;inset:0;background:rgba(15,27,42,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80}
.mask.is-show{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84%;max-width:330px;background:#fff;z-index:90;transform:translateX(102%);transition:transform .3s ease;display:flex;flex-direction:column;padding:20px;overflow-y:auto}
.drawer.is-show{transform:translateX(0)}
.drawer__top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line);margin-bottom:16px}
.drawer__close{width:38px;height:38px;border:1px solid var(--c-border);border-radius:var(--r-btn);display:flex;align-items:center;justify-content:center;color:var(--c-title)}
.drawer__nav{display:grid;gap:4px}
.drawer__nav a{padding:13px 14px;border-radius:var(--r-btn);font-size:15px;font-weight:500;color:var(--c-text)}
.drawer__nav a:hover{background:var(--c-primary-light);color:var(--c-primary-dark)}
.drawer__nav a.is-active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600}
.drawer__cta{margin-top:20px;display:grid;gap:12px}
.drawer__foot{margin-top:auto;padding-top:24px;font-size:13px;color:var(--c-muted)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 20px}
  .nav__menu{gap:0}
  .nav__link{padding:8px 10px;font-size:14px}
  .search{width:170px}
  .hero__inner{gap:40px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .nav__menu,.search{display:none}
  .nav-toggle{display:flex}
  .hero{padding:48px 0 64px}
  .hero__inner{grid-template-columns:1fr;gap:36px}
  .hero__media{order:-1}
  .hero__sub{max-width:none}
  .metrics__inner{grid-template-columns:repeat(2,1fr)}
  .metric{padding:26px 20px}
  .metric:nth-child(3){border-left:0;padding-left:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-line)}
  .story__row{grid-template-columns:1fr;gap:28px}
  .story__row--reverse .story__media{order:0}
  .feature-grid{grid-template-columns:1fr 1fr}
  .fcard--big{grid-column:1 / -1;grid-row:auto}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .trust{grid-template-columns:1fr;gap:32px}
  .faq{grid-template-columns:1fr;gap:28px}
  .faq__intro{position:static}
  .cta-band__inner{grid-template-columns:1fr;gap:28px;padding:52px 0}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15px}
  .section{padding:48px 0}
  .section--tight{padding:40px 0}
  .container{padding:0 16px}
  .topbar__inner{height:auto;padding:9px 0;gap:10px;font-size:12px}
  .topbar__tip{display:none}
  .topbar__actions a:not(.is-strong){display:none}
  .brand{font-size:16px}
  .nav__inner{height:62px;gap:12px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .hero{padding:36px 0 52px}
  .hero__cta{flex-direction:column;align-items:stretch}
  .hero__cta .btn{width:100%}
  .hero__float{left:10px;bottom:12px;padding:11px 14px}
  .hero__float b{font-size:19px}
  .feature-grid{grid-template-columns:1fr;gap:18px}
  .news-grid{grid-template-columns:1fr;gap:18px}
  .metrics__inner{grid-template-columns:repeat(2,1fr)}
  .metric b{font-size:26px}
  .story__row + .story__row{margin-top:40px}
  .faq__q{padding:16px 18px;font-size:15px}
  .faq__a p{padding:0 18px 18px}
  .inline-form{flex-direction:column;padding:8px}
  .inline-form .btn{width:100%}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .to-top{right:16px;bottom:18px}
}
@media (max-width:480px){
  .hero h1{font-size:27px}
  .metric{padding:20px 14px}
  .metric b{font-size:23px}
  .btn{padding:0 18px}
  .btn--lg{padding:0 22px}
  .logo-pill{height:50px;padding:0 16px;font-size:13px}
}

/* roulang page: article */
:root{
  --c-primary:#1668D6;
  --c-primary-dark:#0F4FA8;
  --c-primary-soft:#E8F1FE;
  --c-accent:#FF6A2B;
  --c-bg:#F6F9FC;
  --c-card:#FFFFFF;
  --c-border:#E4EBF3;
  --c-line:#EEF2F7;
  --c-title:#0F1B2A;
  --c-text:#3C4A5C;
  --c-muted:#7A8899;
  --c-footer:#EEF3F9;
  --c-success:#12A150;
  --c-warn:#E8A33D;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(15,27,42,.06),0 8px 24px rgba(15,27,42,.06);
  --sh-hover:0 12px 32px rgba(15,27,42,.10);
  --sh-nav:0 2px 10px rgba(15,27,42,.06);
  --maxw:1200px;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);}
button,input{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:700;line-height:1.35;}
p{margin:0;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;font-weight:700;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--c-primary-soft);border-bottom:1px solid var(--c-border);font-size:13px;color:var(--c-text);}
.topbar__inner{display:flex;align-items:center;gap:16px;min-height:36px;flex-wrap:nowrap;}
.topbar__domain{color:var(--c-primary-dark);font-weight:600;letter-spacing:.02em;}
.topbar__note{margin:0;color:var(--c-text);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar__actions{display:flex;align-items:center;gap:14px;}
.topbar__actions a{color:var(--c-primary-dark);font-weight:600;}
.topbar__cta{
  display:inline-block;padding:3px 12px;border-radius:999px;
  background:#fff;border:1px solid var(--c-border);
}
.topbar__cta:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-nav);}
.nav__inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:700;color:var(--c-title);white-space:nowrap;
}
.brand:hover{color:var(--c-primary-dark);}
.brand__mark{
  position:relative;width:28px;height:28px;border-radius:9px;flex:0 0 28px;
  background:linear-gradient(135deg,var(--c-primary),#4E97EC);
}
.brand__mark::after{
  content:"";position:absolute;left:9px;top:8px;width:10px;height:10px;
  border-radius:50%;background:#fff;opacity:.92;
}
.nav__menu{display:flex;align-items:center;gap:2px;margin-left:8px;}
.nav__link{
  display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--c-text);
}
.nav__link:hover{color:var(--c-primary-dark);background:var(--c-primary-soft);}
.nav__link.is-active{color:var(--c-primary-dark);background:var(--c-primary-soft);font-weight:600;}
.nav__right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 12px;border:1px solid var(--c-border);
  background:var(--c-bg);border-radius:999px;color:var(--c-muted);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px var(--c-primary-soft);}
.search input{
  border:0;background:transparent;outline:none;width:132px;color:var(--c-text);
}
.search input::placeholder{color:var(--c-muted);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--c-border);background:#fff;color:var(--c-title);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.24);}
.btn--primary:hover{background:#F05A18;color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,43,.28);}
.btn--primary:active{transform:translateY(1px);box-shadow:0 3px 10px rgba(255,106,43,.22);}
.btn--outline{background:#fff;color:var(--c-primary);border-color:#BFD8F7;}
.btn--outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary);transform:translateY(-1px);}
.btn--ghost{background:var(--c-primary);color:#fff;}
.btn--ghost:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);}
.btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn--lg{height:52px;padding:0 28px;font-size:16px;}
.btn--text{
  height:auto;padding:0;background:none;border:0;color:var(--c-primary);
  font-weight:600;box-shadow:none;
}
.btn--text:hover{color:var(--c-primary-dark);transform:none;box-shadow:none;}
.btn--text .arrow{transition:transform .2s ease;}
.btn--text:hover .arrow{transform:translateX(3px);}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C6D2E0;}
.crumb .current{color:var(--c-primary);font-weight:600;}

/* ---------- 文章头 ---------- */
.article-head{padding:26px 0 34px;}
.article-head__inner{max-width:860px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge--accent{background:rgba(255,106,43,.10);color:#D8500F;}
.article-head h1{
  margin:16px 0 18px;
  font-size:clamp(30px,4.6vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--c-muted);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C6D2E0;}
.article-meta .author{display:inline-flex;align-items:center;gap:8px;color:var(--c-text);font-weight:600;}
.avatar{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-size:12px;font-weight:700;
}

/* ---------- 文章布局 ---------- */
.article-wrap{padding-bottom:var(--sec);}
.article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;align-items:start;}
.article-main{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:32px;min-height:360px;
}
.article-cover{margin:0 0 26px;border-radius:var(--r-img);overflow:hidden;background:#E9EFF6;}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.article-cover:hover img{transform:scale(1.02);}
.article-cover figcaption{font-size:13px;color:var(--c-muted);padding:10px 4px 0;}

/* ---------- 正文排版 ---------- */
.prose{max-width:760px;font-size:17px;line-height:1.9;color:var(--c-text);}
.prose > * + *{margin-top:1.2em;}
.prose h2{
  margin-top:40px;margin-bottom:16px;font-size:26px;line-height:1.35;font-weight:700;
  padding-left:14px;border-left:4px solid var(--c-primary);
}
.prose h3{margin-top:28px;margin-bottom:12px;font-size:20px;font-weight:600;}
.prose h4{margin-top:22px;margin-bottom:10px;font-size:17px;font-weight:600;}
.prose p{margin:0 0 1.2em;}
.prose a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:var(--c-primary-dark);}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:4px;}
.prose ul li{position:relative;padding-left:20px;margin-bottom:8px;}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;
  background:var(--c-primary-soft);border:2px solid var(--c-primary);border-radius:2px;
}
.prose ol{counter-reset:li;padding-left:2px;}
.prose ol li{position:relative;padding-left:30px;margin-bottom:8px;counter-increment:li;}
.prose ol li::before{
  content:counter(li);position:absolute;left:0;top:.28em;
  width:20px;height:20px;border-radius:50%;background:var(--c-primary-soft);
  color:var(--c-primary-dark);font-size:12px;font-weight:700;line-height:20px;text-align:center;
}
.prose blockquote{
  margin:24px 0;padding:16px 20px;background:var(--c-primary-soft);
  border-left:3px solid var(--c-primary);border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--c-text);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:var(--r-img);margin:24px auto;height:auto;}
.prose figure{margin:24px 0;}
.prose figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px;}
.prose hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}
.prose code{
  background:var(--c-bg);border:1px solid var(--c-border);border-radius:6px;
  padding:1px 6px;font-size:14px;color:var(--c-primary-dark);
}
.prose pre{
  background:#0F1B2A;color:#DCE6F2;padding:18px;border-radius:var(--r-img);
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.prose pre code{background:none;border:0;color:inherit;padding:0;}
.prose table{width:100%;border-collapse:collapse;font-size:15px;}
.prose th,.prose td{padding:11px 14px;border:1px solid var(--c-border);text-align:left;}
.prose thead th{background:var(--c-bg);color:var(--c-title);font-weight:600;}
.prose tbody tr:nth-child(even){background:#FAFCFE;}
.table-wrap{overflow-x:auto;margin:24px 0;border-radius:var(--r-img);}

/* ---------- 侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:22px;position:sticky;top:96px;}
.side-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:22px;
}
.side-card__title{
  font-size:15px;font-weight:700;color:var(--c-title);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-card__title::before{
  content:"";width:4px;height:14px;border-radius:2px;background:var(--c-accent);
}
.toc{font-size:14px;}
.toc li{margin-bottom:4px;}
.toc a{
  display:block;padding:7px 12px;border-left:2px solid var(--c-line);
  color:var(--c-text);line-height:1.6;border-radius:0 6px 6px 0;
}
.toc a:hover{background:var(--c-bg);color:var(--c-primary-dark);}
.toc a.is-current{
  color:var(--c-primary-dark);background:var(--c-primary-soft);
  border-left-color:var(--c-primary);font-weight:600;
}
.toc .toc-h3 a{padding-left:24px;font-size:13px;color:var(--c-muted);}
.hot-list li{padding:12px 0;border-bottom:1px solid var(--c-line);}
.hot-list li:last-child{border-bottom:0;padding-bottom:0;}
.hot-list a{display:flex;gap:10px;color:var(--c-title);font-size:14px;font-weight:500;line-height:1.6;}
.hot-list a:hover{color:var(--c-primary-dark);}
.hot-list .rank{
  flex:0 0 20px;height:20px;border-radius:6px;background:var(--c-bg);
  color:var(--c-muted);font-size:12px;font-weight:700;line-height:20px;text-align:center;
  font-variant-numeric:tabular-nums;
}
.hot-list li:nth-child(-n+3) .rank{background:rgba(255,106,43,.12);color:#D8500F;}

/* ---------- 标签行 / 翻页 / 相关 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:34px;padding-top:22px;border-top:1px solid var(--c-line);}
.tag-row__label{font-size:13px;color:var(--c-muted);}
.tag{
  display:inline-block;padding:5px 12px;border-radius:999px;
  background:var(--c-bg);border:1px solid var(--c-border);
  font-size:13px;color:var(--c-text);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary-dark);background:var(--c-primary-soft);}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:26px;}
.post-nav__item{
  display:block;padding:18px 20px;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-card);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.post-nav__item:hover{border-color:#BFD8F7;box-shadow:var(--sh-hover);transform:translateY(-2px);}
.post-nav__label{font-size:12px;color:var(--c-muted);display:block;margin-bottom:6px;}
.post-nav__title{font-size:15px;font-weight:600;color:var(--c-title);line-height:1.6;}
.post-nav__item:hover .post-nav__title{color:var(--c-primary-dark);}
.post-nav__item--back{text-align:center;grid-column:1 / -1;}

.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:0 0 26px;}
.section-title h2{font-size:28px;line-height:1.3;}
.section-title .sub{font-size:14px;color:var(--c-muted);margin-top:8px;}
.related{padding:64px 0 0;}
.card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.card:hover{border-color:#BFD8F7;box-shadow:var(--sh-hover);transform:translateY(-3px);}
.card__cover{display:block;background:#E9EFF6;overflow:hidden;}
.card__cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.card:hover .card__cover img{transform:scale(1.03);}
.card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__title{font-size:17px;font-weight:600;line-height:1.55;color:var(--c-title);}
.card:hover .card__title{color:var(--c-primary-dark);}
.card__excerpt{
  font-size:14px;color:var(--c-text);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-muted);padding-top:8px;
}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}

/* ---------- 空态 ---------- */
.empty-state{
  padding:56px 24px;text-align:center;background:var(--c-bg);
  border:1px dashed var(--c-border);border-radius:var(--r-card);
}
.empty-state__art{
  width:80px;height:80px;margin:0 auto 18px;border-radius:20px;position:relative;
  background:linear-gradient(135deg,var(--c-primary-soft),#D9E8FC);
}
.empty-state__art::before{
  content:"";position:absolute;left:24px;top:26px;width:32px;height:28px;
  border:3px solid var(--c-primary);border-radius:6px;opacity:.6;
}
.empty-state__art::after{
  content:"";position:absolute;left:34px;top:38px;width:12px;height:3px;
  background:var(--c-primary);border-radius:2px;opacity:.6;
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--c-muted);font-size:14px;margin-bottom:20px;}

/* ---------- CTA 订阅带 ---------- */
.cta-band{background:var(--c-primary-soft);border-top:1px solid var(--c-border);padding:64px 0;}
.cta-band__inner{display:flex;align-items:center;gap:32px;flex-wrap:wrap;justify-content:space-between;}
.cta-band h2{font-size:28px;line-height:1.35;}
.cta-band p{margin-top:10px;color:var(--c-text);font-size:15px;max-width:520px;}
.subscribe{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-border);border-radius:12px;padding:4px;max-width:100%;}
.subscribe:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,104,214,.12);}
.subscribe input{
  border:0;outline:none;height:46px;padding:0 14px;min-width:230px;
  background:transparent;color:var(--c-text);
}
.subscribe input::placeholder{color:var(--c-muted);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-footer);border-top:1px solid var(--c-border);padding:56px 0 0;margin-top:0;}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
.footer__col h4{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--c-title);}
.footer__col li{margin-bottom:10px;}
.footer__col a{font-size:14px;color:var(--c-text);}
.footer__col a:hover{color:var(--c-primary);}
.footer__brand p{margin-top:14px;font-size:14px;color:var(--c-text);max-width:320px;}
.brand--footer{font-size:18px;}
.footer__bottom{
  border-top:1px solid #DCE6F0;padding:18px 0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-muted);
}
.footer__bottom a{color:var(--c-muted);}
.footer__bottom a:hover{color:var(--c-primary);}
.back-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--c-border);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--sh-card);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  z-index:70;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{border-color:var(--c-primary);box-shadow:var(--sh-hover);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:30px;}
}
@media (max-width:1023px){
  :root{--sec:64px;}
  .nav-toggle{display:inline-flex;}
  .search{display:none;}
  .nav__menu{
    position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
    background:#fff;padding:88px 22px 32px;flex-direction:column;align-items:stretch;gap:6px;
    box-shadow:-12px 0 32px rgba(15,27,42,.16);transform:translateX(100%);
    transition:transform .28s ease;z-index:80;overflow-y:auto;margin-left:0;
  }
  .nav__menu.is-open{transform:translateX(0);}
  .nav__link{padding:12px 14px;font-size:16px;}
  .nav__backdrop{
    position:fixed;inset:0;background:rgba(15,27,42,.45);opacity:0;visibility:hidden;
    transition:opacity .28s ease,visibility .28s ease;z-index:75;
  }
  .nav__backdrop.is-open{opacity:1;visibility:visible;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;order:2;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band__inner{gap:22px;}
}
@media (max-width:767px){
  :root{--sec:48px;}
  .container{padding:0 16px;}
  .topbar__note{display:none;}
  .article-main{padding:20px;}
  .prose{font-size:16px;line-height:1.85;}
  .prose h2{font-size:22px;margin-top:32px;}
  .prose h3{font-size:18px;margin-top:24px;}
  .grid-3{grid-template-columns:minmax(0,1fr);}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .section-title{flex-direction:column;align-items:flex-start;gap:8px;}
  .section-title h2{font-size:23px;}
  .article-head h1{margin-top:12px;}
  .subscribe{width:100%;}
  .subscribe input{min-width:0;flex:1;}
  .footer__grid{grid-template-columns:1fr;}
}
@media (max-width:480px){
  .btn{width:100%;}
  .btn--text{width:auto;}
  .nav__right .btn--sm{display:none;}
  .subscribe{flex-direction:column;align-items:stretch;padding:10px;}
  .subscribe .btn{width:100%;}
  .article-meta{gap:8px 12px;}
}

/* roulang page: category1 */
:root{
  --primary:#1668D6;
  --primary-dark:#0F4FA8;
  --primary-soft:#E8F1FE;
  --primary-line:#C7DBF7;
  --accent:#FF6A2B;
  --accent-dark:#F05A18;
  --bg:#F6F9FC;
  --bg-soft:#F0F5FA;
  --card:#FFFFFF;
  --border:#E4EBF3;
  --divider:#EEF2F7;
  --text:#0F1B2A;
  --text-body:#3C4A5C;
  --text-soft:#7A8899;
  --success:#12A150;
  --warning:#E8A33D;
  --danger:#D94A4A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(15,27,42,.06),0 8px 24px rgba(15,27,42,.06);
  --shadow-hover:0 12px 32px rgba(15,27,42,.10);
  --shadow-nav:0 2px 10px rgba(15,27,42,.06);
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text-body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease}
a:hover{color:var(--primary-dark)}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--soft{background:var(--bg-soft)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* 顶部信息条 */
.topbar{background:#fff;border-bottom:1px solid var(--border);font-size:13px;color:var(--text-soft)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px}
.topbar__domain{font-weight:600;color:var(--primary-dark);letter-spacing:.02em}
.topbar__notice{display:flex;align-items:center;gap:8px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.topbar__notice .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.topbar__actions{display:flex;align-items:center;gap:16px}
.topbar__actions a{font-weight:500;color:var(--text-body)}
.topbar__actions a:hover{color:var(--primary)}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:var(--shadow-nav)}
.nav__inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:none;font-size:17px;font-weight:700;color:var(--text);white-space:nowrap;letter-spacing:.01em}
.brand:hover{color:var(--text)}
.brand__mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,#1668D6,#0F4FA8);position:relative;flex:none;box-shadow:0 4px 10px rgba(22,104,214,.28)}
.brand__mark::before{content:"";position:absolute;inset:8px;background:#fff;border-radius:3px;transform:rotate(45deg)}
.brand__mark::after{content:"";position:absolute;left:50%;top:50%;width:6px;height:6px;margin:-3px 0 0 -3px;background:var(--accent);border-radius:50%}
.nav__inner nav{flex:1 1 auto;display:flex;justify-content:center}
.nav__menu{display:flex;align-items:center;gap:4px}
.nav__link{position:relative;display:block;padding:9px 13px;border-radius:9px;font-size:15px;font-weight:500;color:var(--text-body)}
.nav__link:hover{color:var(--primary);background:var(--primary-soft)}
.nav__link.is-active{color:var(--primary);background:var(--primary-soft);font-weight:600}
.nav__link.is-active::after{content:"";position:absolute;left:50%;bottom:3px;width:5px;height:5px;margin-left:-2.5px;border-radius:50%;background:var(--accent)}
.nav__right{display:flex;align-items:center;gap:12px;flex:none}
.search{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius-btn);color:var(--text-soft);transition:border-color .2s ease,box-shadow .2s ease}
.search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,104,214,.12)}
.search input{width:132px;border:0;background:transparent;outline:none;font-size:14px;color:var(--text)}
.search input::placeholder{color:var(--text-soft)}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;background:#fff;border:1px solid var(--border);border-radius:var(--radius-btn);color:var(--text);cursor:pointer}
.nav-toggle:hover{border-color:var(--primary-line);color:var(--primary)}
.nav-overlay{position:fixed;inset:0;background:rgba(15,27,42,.45);z-index:55;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease}
.nav-overlay.is-open{opacity:1;visibility:visible}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-btn);font-size:15px;font-weight:600;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;white-space:nowrap}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--md{height:46px;padding:0 24px}
.btn--lg{height:52px;padding:0 30px;font-size:16px}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.24)}
.btn--primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(255,106,43,.28)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(255,106,43,.2)}
.btn--solid{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(22,104,214,.22)}
.btn--solid:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(22,104,214,.24)}
.btn--solid:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(22,104,214,.2)}
.btn--ghost{background:#fff;color:var(--primary);border-color:var(--primary-line)}
.btn--ghost:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--text{background:none;height:auto;padding:0;color:var(--primary);font-weight:600}
.btn--text .arrow{transition:transform .2s ease}
.btn--text:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:4px}
.btn--text:hover .arrow{transform:translateX(3px)}
.btn:disabled,.btn.is-disabled{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}

/* 徽章 / 标签 */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge--accent{background:#FFF1E9;color:var(--accent-dark)}
.badge--muted{background:#EEF3F9;color:var(--text-soft)}
.badge--success{background:#E7F7EE;color:var(--success)}
.badge--warning{background:#FDF4E4;color:#B97B14}

/* 面包屑 */
.crumb{font-size:13px;color:var(--text-soft);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb a{color:var(--text-soft)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.6}
.crumb .current{color:var(--primary);font-weight:600}

/* Hero */
.hero{position:relative;padding:56px 0 84px;background-image:url("/assets/images/backpic/back-2.webp");background-size:cover;background-position:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(102deg,rgba(246,249,252,.97) 0%,rgba(246,249,252,.9) 46%,rgba(232,241,254,.72) 100%)}
.hero__inner{position:relative;z-index:1;max-width:760px}
.hero h1{margin-top:20px;font-size:clamp(30px,4.6vw,46px);line-height:1.25;font-weight:700;color:var(--text);letter-spacing:-.01em}
.hero__lead{margin-top:18px;font-size:17px;line-height:1.8;color:var(--text-body);max-width:660px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero__badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero__badges span{display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:13px;color:var(--text-body);box-shadow:0 1px 2px rgba(15,27,42,.04)}
.hero__badges span i{width:6px;height:6px;border-radius:50%;background:var(--primary);display:inline-block}
.hero__badges span:nth-child(2) i{background:var(--accent)}
.hero__badges span:nth-child(3) i{background:var(--success)}

/* 指标条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--divider);border-bottom:1px solid var(--divider);background:#fff;margin-top:-1px}
.stats__item{padding:32px 24px;border-right:1px solid var(--divider)}
.stats__item:last-child{border-right:0}
.stats__num{font-size:32px;font-weight:700;color:var(--primary-dark);line-height:1.1;font-variant-numeric:tabular-nums}
.stats__num small{font-size:15px;font-weight:600;margin-left:2px;color:var(--primary)}
.stats__label{margin-top:8px;font-size:13px;color:var(--text-soft);line-height:1.6}

/* 通用标题 */
.section-head{max-width:720px}
.section-head h2{margin-top:14px;font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;color:var(--text);letter-spacing:-.01em}
.section-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--text-body)}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* 时间轴 */
.timeline{position:relative;margin-top:48px}
.timeline::before{content:"";position:absolute;left:23px;top:16px;bottom:16px;width:2px;background:linear-gradient(180deg,#D6E5F9,#EDF3FA);border-radius:2px}
.timeline__item{position:relative;display:grid;grid-template-columns:48px 1fr;gap:22px;padding-bottom:26px}
.timeline__item:last-child{padding-bottom:0}
.timeline__dot{width:48px;height:48px;border-radius:50%;background:#fff;border:2px solid var(--primary-line);color:var(--primary);font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;position:relative;z-index:1;font-variant-numeric:tabular-nums;transition:border-color .2s ease,color .2s ease,box-shadow .2s ease}
.timeline__card{display:grid;grid-template-columns:1fr 236px;gap:24px;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-card);transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease}
.timeline__card:hover{box-shadow:var(--shadow-hover);border-color:var(--primary-line);transform:translateY(-2px)}
.timeline__card:hover .timeline__dot{border-color:var(--accent);color:var(--accent)}
.timeline__tag{margin-bottom:10px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.timeline__card h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--text)}
.timeline__card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--text-body)}
.timeline__media{border-radius:var(--radius-img);overflow:hidden;aspect-ratio:16/10;background:#E7EEF6}
.timeline__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.timeline__card:hover .timeline__media img{transform:scale(1.03)}

/* 交错图文 */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0;border-bottom:1px solid var(--divider)}
.zig:last-of-type{border-bottom:0;padding-bottom:0}
.zig:first-of-type{padding-top:44px}
.zig__media{border-radius:16px;overflow:hidden;aspect-ratio:5/4;background:#E7EEF6;box-shadow:var(--shadow-card)}
.zig__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.zig:hover .zig__media img{transform:scale(1.03)}
.zig--reverse .zig__media{order:2}
.zig__body h3{margin-top:14px;font-size:22px;line-height:1.4;font-weight:600;color:var(--text)}
.zig__body p{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--text-body)}
.zig__list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.zig__list li{position:relative;padding-left:18px;font-size:15px;color:var(--text-body)}
.zig__list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:1px;background:var(--primary);opacity:.8}

/* 混合卡片网格 */
.grid-mix{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;margin-top:44px}
.mix-card{grid-column:span 2;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease}
.mix-card:hover{box-shadow:var(--shadow-hover);border-color:var(--primary-line);transform:translateY(-3px)}
.mix-card:hover h3{color:var(--primary-dark)}
.mix-card--wide{grid-column:span 3;padding:0;overflow:hidden}
.mix-card--wide .mix-card__media{aspect-ratio:16/9;overflow:hidden;background:#E7EEF6}
.mix-card--wide .mix-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.mix-card--wide:hover .mix-card__media img{transform:scale(1.03)}
.mix-card--wide .mix-card__body{padding:24px}
.mix-card h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--text);transition:color .2s ease}
.mix-card p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--text-body)}
.mix-card__foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-soft)}
.mix-card__num{font-size:26px;font-weight:700;color:var(--primary-soft);line-height:1;font-variant-numeric:tabular-nums}
.mix-card--wide .mix-card__num{color:var(--primary-line)}

/* 信任区 */
.trust{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
.trust__rules{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.trust__rule{display:flex;gap:14px;padding:18px 20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-card)}
.trust__rule .idx{flex:none;width:34px;height:34px;border-radius:10px;background:var(--primary-soft);color:var(--primary);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.trust__rule h3{font-size:16px;font-weight:600;color:var(--text)}
.trust__rule p{margin-top:6px;font-size:14.5px;line-height:1.8;color:var(--text-body)}
.quote-stack{display:flex;flex-direction:column;gap:18px}
.quote{background:#fff;border:1px solid var(--border);border-left:3px solid var(--primary);border-radius:0 var(--radius-card) var(--radius-card) 0;padding:22px 24px;box-shadow:var(--shadow-card)}
.quote p{font-size:15px;line-height:1.85;color:var(--text-body)}
.quote footer{margin-top:16px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-soft)}
.quote footer b{color:var(--text);font-weight:600}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none}

/* FAQ */
.faq{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.faq__aside{position:sticky;top:96px}
.faq__aside .btn{margin-top:22px}
.faq__list{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:6px 24px;box-shadow:var(--shadow-card)}
.faq__item{border-bottom:1px solid var(--divider)}
.faq__item:last-child{border-bottom:0}
.faq__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 0;background:none;border:0;text-align:left;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);line-height:1.6}
.faq__q:hover{color:var(--primary)}
.faq__icon{position:relative;flex:none;width:20px;height:20px;border-radius:50%;background:var(--primary-soft);transition:background-color .22s ease,transform .3s ease}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%)}
.faq__icon::before{width:10px;height:2px}
.faq__icon::after{width:2px;height:10px;transition:opacity .22s ease}
.faq__item.is-open .faq__icon{background:var(--accent);transform:rotate(180deg)}
.faq__item.is-open .faq__icon::before{background:#fff}
.faq__item.is-open .faq__icon::after{opacity:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq__a p{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--text-body);max-width:620px}
.faq__item.is-open .faq__a{max-height:320px}

/* CTA 带 */
.cta-band{background:linear-gradient(120deg,#E8F1FE 0%,#F2F7FF 60%,#FFF3EC 100%);border:1px solid var(--border);border-radius:20px;padding:48px;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;color:var(--text)}
.cta-band p{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--text-body);max-width:520px}
.inline-form{display:flex;gap:8px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:12px;padding:6px;transition:border-color .2s ease,box-shadow .2s ease}
.inline-form:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,104,214,.12)}
.inline-form input{flex:1;min-width:0;height:44px;border:0;background:transparent;padding:0 14px;font-size:15px;color:var(--text);outline:none;font-family:inherit}
.inline-form input::placeholder{color:var(--text-soft)}
.cta-band__note{margin-top:14px;font-size:13px;color:var(--text-soft)}

/* 页脚 */
.site-footer{background:#EEF3F9;border-top:1px solid var(--border);padding:64px 0 0;margin-top:0}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer__brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text)}
.footer__desc{margin-top:16px;font-size:14px;line-height:1.85;color:var(--text-soft);max-width:320px}
.footer__col h3{font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer__col ul{display:flex;flex-direction:column;gap:11px}
.footer__col a{font-size:14px;color:var(--text-soft)}
.footer__col a:hover{color:var(--primary)}
.footer__contact li{font-size:14px;color:var(--text-soft);line-height:1.8}
.footer__contact b{color:var(--text-body);font-weight:600}
.footer__bottom{margin-top:48px;border-top:1px solid #DFE8F2;padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--text-soft);flex-wrap:wrap}
.footer__bottom a{color:var(--text-soft)}
.footer__bottom a:hover{color:var(--primary)}

/* 回到顶部 */
#toTop{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-card);display:flex;align-items:center;justify-content:center;color:var(--primary);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s ease,visibility .25s ease,transform .25s ease;z-index:50}
#toTop.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
#toTop:hover{border-color:var(--primary-line);box-shadow:var(--shadow-hover)}

/* 响应式 */
@media (max-width:1279px){
  .nav__link{padding:9px 10px;font-size:14.5px}
  .search input{width:104px}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section--tight{padding:56px 0}
  .topbar__notice{display:none}
  .nav-toggle{display:inline-flex}
  .search{display:none}
  .nav__menu{position:fixed;top:0;right:0;bottom:0;width:302px;max-width:84vw;background:#fff;flex-direction:column;align-items:stretch;gap:6px;padding:96px 20px 28px;transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);box-shadow:-8px 0 32px rgba(15,27,42,.12);z-index:60;overflow-y:auto}
  .nav__menu.is-open{transform:translateX(0)}
  .nav__link{padding:13px 16px;font-size:15.5px}
  .nav__link.is-active::after{left:auto;right:16px;bottom:50%;margin:0 -2.5px 2.5px 0}
  .nav__inner nav{justify-content:flex-end}
  .hero{padding:40px 0 64px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stats__item:nth-child(2n){border-right:0}
  .stats__item:nth-child(-n+2){border-bottom:1px solid var(--divider)}
  .timeline__card{grid-template-columns:1fr;gap:18px}
  .timeline__media{order:-1}
  .zig{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .zig--reverse .zig__media{order:0}
  .grid-mix{grid-template-columns:repeat(2,1fr)}
  .mix-card,.mix-card--wide{grid-column:span 1;padding:22px}
  .mix-card--wide{padding:0}
  .trust{grid-template-columns:1fr;gap:32px}
  .faq{grid-template-columns:1fr;gap:32px}
  .faq__aside{position:static}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:36px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section--tight{padding:44px 0}
  body{font-size:15.5px}
  .brand{font-size:15px;gap:8px}
  .brand__mark{width:26px;height:26px}
  .nav__inner{height:62px;gap:14px}
  .hero h1{margin-top:16px}
  .hero__lead{font-size:16px}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:14px}
  .grid-mix{grid-template-columns:1fr}
  .timeline__item{grid-template-columns:36px 1fr;gap:16px}
  .timeline::before{left:17px}
  .timeline__dot{width:36px;height:36px;font-size:14px}
  .timeline__card{padding:18px}
  .faq__list{padding:4px 18px}
  .cta-band{padding:26px;border-radius:16px}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__bottom{justify-content:flex-start}
  .quote{padding:18px 20px}
}
@media (max-width:480px){
  .hero__actions{flex-direction:column;align-items:stretch}
  .hero__actions .btn{width:100%}
  .stats__num{font-size:26px}
  .stats__item{padding:24px 18px}
  .inline-form{flex-direction:column;align-items:stretch;padding:10px}
  .inline-form .btn{width:100%}
  .inline-form input{height:42px}
  #toTop{right:16px;bottom:16px}
}

/* roulang page: category2 */
:root{
  --primary:#1668D6;
  --primary-d:#0F4FA8;
  --primary-l:#E8F1FE;
  --accent:#FF6A2B;
  --accent-d:#E85814;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --line:#E4EBF3;
  --line-2:#EEF2F7;
  --t1:#0F1B2A;
  --t2:#3C4A5C;
  --t3:#7A8899;
  --ok:#12A150;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(15,27,42,.06),0 8px 24px rgba(15,27,42,.06);
  --sh-2:0 12px 32px rgba(15,27,42,.10);
  --sh-nav:0 2px 10px rgba(15,27,42,.06);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--t2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-d)}
h1,h2,h3,h4{margin:0;color:var(--t1);line-height:1.3;font-weight:700}
h3{font-size:20px}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#fff;border-bottom:1px solid var(--line-2);font-size:13px;color:var(--t3)}
.topbar__inner{display:flex;align-items:center;gap:16px;height:36px}
.topbar__domain{color:var(--t2);font-weight:600;letter-spacing:.02em;white-space:nowrap}
.topbar__tip{flex:1;min-width:0;margin:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.topbar__tip b{color:var(--accent);font-weight:600}
.topbar__actions{display:flex;align-items:center;gap:14px;white-space:nowrap}
.topbar__link{font-size:13px;color:var(--t2)}
.topbar__link:hover{color:var(--primary)}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line-2);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-nav)}
.nav__inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--t1);white-space:nowrap;letter-spacing:-.01em}
.brand:hover{color:var(--primary-d)}
.brand__mark{
  width:28px;height:28px;flex:none;border-radius:9px;position:relative;
  background:linear-gradient(135deg,var(--primary),#3E8BE8);
  box-shadow:0 4px 10px rgba(22,104,214,.30);
}
.brand__mark::after{content:"";position:absolute;inset:8px;border-radius:4px;background:#fff;opacity:.92}
.site-header nav{flex:1;display:flex;justify-content:center}
.nav__menu{display:flex;gap:4px}
.nav__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--t2);
  transition:background-color .2s ease,color .2s ease;
}
.nav__link:hover{background:var(--primary-l);color:var(--primary-d)}
.nav__link.is-active{background:var(--primary-l);color:var(--primary-d);font-weight:600}
.nav__link.is-active::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.nav__right{display:flex;align-items:center;gap:12px}
.search{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;
  background:var(--bg);border:1px solid var(--line);border-radius:10px;color:var(--t3);
  transition:border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-l);color:var(--primary)}
.search input{border:0;background:transparent;outline:none;width:150px;font-size:14px;color:var(--t1)}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--t1);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.nav-mask{
  position:fixed;inset:0;background:rgba(15,27,42,.45);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.28)}
.btn--primary:hover{background:var(--accent-d);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,43,.32)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(255,106,43,.24)}
.btn--ghost{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn--ghost:hover{background:var(--primary-l);color:var(--primary-d);border-color:var(--primary-d);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--text{background:transparent;color:var(--primary);padding:0 4px;height:auto}
.btn--text:hover{color:var(--primary-d)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--lg{height:52px;padding:0 28px;font-size:16px}
.btn:disabled{opacity:.4;cursor:not-allowed}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--primary-l);color:var(--primary-d);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge--accent{background:#FFF0E8;color:var(--accent-d)}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--t2);
}
.tag svg{color:var(--primary)}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,249,252,.97) 0%,rgba(246,249,252,.92) 46%,rgba(232,241,254,.60) 100%);
}
.page-hero__inner{position:relative;z-index:2;padding:52px 0 72px;max-width:820px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:20px}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#C3CEDB}
.crumb .current{color:var(--primary);font-weight:600}
.page-hero h1{
  font-size:clamp(30px,4.6vw,46px);
  line-height:1.25;letter-spacing:-.01em;
  margin:16px 0 18px;
}
.page-hero h1 .hl{color:var(--primary)}
.lede{font-size:17px;line-height:1.75;color:var(--t2);max-width:660px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 数据指标带 ---------- */
.stats{
  position:relative;z-index:3;margin-top:-40px;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--sh-1);padding:28px 8px;
}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:2px 24px;border-right:1px solid var(--line-2)}
.stat:last-child{border-right:0}
.stat__num{
  font-size:28px;font-weight:700;color:var(--t1);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2;
}
.stat__num em{font-style:normal;font-size:15px;font-weight:600;color:var(--primary);margin-left:3px}
.stat__label{font-size:13px;color:var(--t3);margin-top:4px}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section__head{max-width:720px;margin-bottom:44px}
.section__head h2{font-size:clamp(24px,2.6vw,32px)}
.section__head p{margin:14px 0 0;color:var(--t3);font-size:16px}

/* ---------- 左右交错图文 ---------- */
.zigzag{display:flex;flex-direction:column;gap:76px}
.z-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.z-row--rev .z-media{order:2}
.z-media{
  position:relative;overflow:hidden;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh-1);
  aspect-ratio:5/4;background:#EDF2F8;
}
.z-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.z-row:hover .z-media img{transform:scale(1.02)}
.z-media__tag{
  position:absolute;left:14px;top:14px;
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--primary-d);
  font-size:12px;font-weight:600;box-shadow:0 4px 12px rgba(15,27,42,.10);
}
.z-body h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:16px}
.z-body h2 .num{
  font-variant-numeric:tabular-nums;color:var(--accent);
  font-size:15px;font-weight:700;vertical-align:middle;margin-right:8px;
}
.z-body p{font-size:16px;line-height:1.85;margin-bottom:14px}
.z-list{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.z-list li{position:relative;padding-left:22px;font-size:15px;color:var(--t2)}
.z-list li::before{
  content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:3px;
  background:var(--primary-l);border:2px solid var(--primary);
}

/* ---------- FAQ ---------- */
.faq__grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:56px;align-items:start}
.faq__side{position:sticky;top:104px}
.faq__side h2{font-size:clamp(24px,2.6vw,32px)}
.faq__side p{margin-top:16px;color:var(--t3);font-size:15px}
.faq__side .tag{margin-top:20px}
.faq__list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.faq__item{border-bottom:1px solid var(--line-2)}
.faq__item:last-child{border-bottom:0}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--t1);line-height:1.6;
}
.faq__q:hover{color:var(--primary-d)}
.faq__icon{
  flex:none;width:24px;height:24px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-l);color:var(--primary);font-size:16px;font-weight:700;
  transition:transform .25s ease,background-color .25s ease;
}
.faq__item.is-open .faq__icon{transform:rotate(45deg);background:#FFEDE5;color:var(--accent-d)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq__a p{padding:0 22px 20px;margin:0;font-size:15px;color:var(--t2);line-height:1.8}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#EDF4FE 0%,#F7FAFF 60%,#FFF3EC 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:64px 0;
}
.cta-band__inner{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.cta-band h2{font-size:clamp(22px,2.4vw,28px)}
.cta-band p{margin-top:12px;color:var(--t2);font-size:15px;max-width:460px}
.subscribe{
  display:flex;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:6px;box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-l)}
.subscribe input{
  flex:1;min-width:0;border:0;background:transparent;padding:0 14px;height:44px;
  outline:none;font-size:15px;color:var(--t1);
}
.subscribe input::placeholder{color:#9AA8B8}
.subscribe__tip{margin:12px 0 0;font-size:13px;color:var(--t3);min-height:20px}
.cta-band__note{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}

/* ---------- 页脚 ---------- */
.site-footer{background:#EEF3F9;border-top:1px solid var(--line);padding-top:64px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
.foot-brand{display:flex;flex-direction:column;gap:16px}
.foot-brand .brand{font-size:17px}
.foot-desc{font-size:14px;color:var(--t3);line-height:1.8;margin:0;max-width:320px}
.foot-tags{display:flex;flex-wrap:wrap;gap:8px}
.foot-title{font-size:15px;font-weight:700;color:var(--t1);margin-bottom:16px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14px;color:var(--t3)}
.foot-links a:hover{color:var(--primary)}
.foot-links a.is-current{color:var(--primary);font-weight:600}
.foot-bottom{
  border-top:1px solid #DFE7F0;padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
}
.foot-bottom .foot-meta{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);
  display:flex;align-items:center;justify-content:center;color:var(--t2);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,transform .25s ease;
  z-index:70;
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav__inner{gap:18px}
  .nav__link{padding:8px 11px;font-size:14px}
  .z-row{gap:44px}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .site-header nav{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
    background:#fff;z-index:100;display:block;
    transform:translateX(100%);
    transition:transform .3s cubic-bezier(.4,0,.2,1);
    box-shadow:-12px 0 40px rgba(15,27,42,.14);
    padding:26px 20px;overflow-y:auto;
  }
  .site-header nav::before{
    content:"栏目导航";display:block;font-size:13px;color:var(--t3);
    letter-spacing:.08em;margin-bottom:14px;
  }
  .site-header nav.is-open{transform:translateX(0)}
  .nav__menu{flex-direction:column;gap:6px;align-items:stretch}
  .nav__link{padding:12px 14px;font-size:16px;border-radius:10px}
  .nav__link.is-active::after{margin-left:auto}
  .z-row{grid-template-columns:1fr;gap:28px}
  .z-row--rev .z-media{order:0}
  .zigzag{gap:56px}
  .faq__grid{grid-template-columns:1fr;gap:32px}
  .faq__side{position:static}
  .cta-band__inner{grid-template-columns:1fr;gap:24px}
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stats__grid{grid-template-columns:repeat(2,1fr);row-gap:22px}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line-2);padding-top:22px}
  .stat:nth-child(1),.stat:nth-child(2){border-top:0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .topbar__inner{height:34px;gap:12px}
  .topbar__tip{display:none}
  .topbar__actions .topbar__link:first-child{display:none}
  .nav__inner{height:62px;gap:12px}
  .brand{font-size:16px}
  .brand__mark{width:24px;height:24px;border-radius:8px}
  .brand__mark::after{inset:7px}
  .search{display:none}
  .page-hero__inner{padding:36px 0 56px}
  .lede{font-size:16px}
  .hero-actions .btn{width:100%}
  .stats{margin-top:-24px;padding:22px 4px}
  .stat{padding:2px 18px}
  .stat__num{font-size:24px}
  .section{padding:52px 0}
  .section__head{margin-bottom:30px}
  .faq__q{padding:16px 18px;font-size:15px}
  .faq__a p{padding:0 18px 18px}
  .cta-band{padding:48px 0}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .foot-bottom{justify-content:flex-start}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .hero-tags{gap:8px}
  .tag{font-size:12px;padding:4px 10px}
  .stats__grid{grid-template-columns:1fr}
  .stat{border-right:0;padding:12px 18px}
  .stat:nth-child(n+2){border-top:1px solid var(--line-2)}
  .stat:first-child{border-top:0;padding-top:0}
  .subscribe{flex-direction:column;padding:10px}
  .subscribe input{height:42px}
  .subscribe .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --primary:#1668D6;
  --primary-dark:#0F4FA8;
  --primary-light:#E8F1FE;
  --accent:#FF6A2B;
  --accent-soft:#FFF1E9;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --border:#E4EBF3;
  --line:#EEF2F7;
  --text:#0F1B2A;
  --body:#3C4A5C;
  --muted:#7A8899;
  --success:#12A150;
  --warn:#E8A33D;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,27,42,.06),0 8px 24px rgba(15,27,42,.06);
  --sh-2:0 12px 32px rgba(15,27,42,.10);
  --sh-nav:0 2px 10px rgba(15,27,42,.06);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;color:var(--body);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,4.6vw,46px);line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(26px,3.2vw,32px)}
h3{font-size:20px;font-weight:600;line-height:1.4}
p{margin:0}
button{font:inherit;cursor:pointer;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#EEF3F9;border-bottom:1px solid var(--border);font-size:13px;color:var(--muted)}
.topbar__inner{display:flex;align-items:center;gap:16px;height:36px}
.topbar__domain{font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.topbar__tip{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar__actions{display:flex;gap:16px;flex:none}
.topbar__link{color:#5A6B7F;font-size:13px}
.topbar__link:hover{color:var(--primary)}
.topbar__link--strong{color:var(--primary);font-weight:600}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);border-bottom:1px solid var(--border);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:var(--sh-nav)}
.nav__inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--text);flex:none}
.brand:hover{color:var(--primary-dark)}
.brand__mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(140deg,var(--primary),#5AA0EC);position:relative;box-shadow:0 4px 12px rgba(22,104,214,.32);flex:none}
.brand__mark::after{content:"";position:absolute;inset:8px;border-radius:4px;background:#fff;opacity:.92}
nav[aria-label="主导航"]{flex:1;min-width:0}
.nav__menu{display:flex;align-items:center;gap:4px}
.nav__link{display:inline-block;padding:8px 12px;font-size:15px;font-weight:500;color:var(--body);border-radius:8px;position:relative;white-space:nowrap}
.nav__link:hover{color:var(--primary-dark);background:var(--primary-light)}
.nav__link.is-active{color:var(--primary);background:var(--primary-light);font-weight:600}
.nav__link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--accent)}
.nav__right{display:flex;align-items:center;gap:12px;flex:none}
.search{display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;width:190px;background:var(--bg);border:1px solid var(--border);border-radius:var(--r-btn);color:var(--muted);transition:border-color .2s,box-shadow .2s,background-color .2s}
.search:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(22,104,214,.12)}
.search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--text)}
.search input::placeholder{color:var(--muted)}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--border);background:#fff;border-radius:var(--r-btn);color:var(--text);align-items:center;justify-content:center}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.nav-overlay{position:fixed;inset:0;background:rgba(15,27,42,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70}
.nav-overlay.is-visible{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;white-space:nowrap;cursor:pointer}
.btn--sm{height:40px;padding:0 16px;font-size:14px}
.btn--lg{height:52px;padding:0 28px;font-size:16px}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(22,104,214,.24)}
.btn--primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(22,104,214,.28)}
.btn--accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.26)}
.btn--accent:hover{background:#EC5A18;color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,43,.3)}
.btn--ghost{background:#fff;border-color:#BED8F6;color:var(--primary)}
.btn--ghost:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary-dark);transform:translateY(-1px)}
.btn--text{background:none;border:0;height:auto;padding:0;color:var(--primary);font-weight:600}
.btn--text:hover{color:var(--primary-dark);text-decoration:underline}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}

/* ---------- 标签 / 徽章 ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.chip{display:inline-block;padding:4px 10px;border-radius:999px;background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:600;line-height:1.6}
.chip--accent{background:var(--accent-soft);color:#D9551A}
.chip--gray{background:#EFF4F9;color:#5A6B7F}
.badge-status{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.7}
.badge-status--ok{background:#E4F7EC;color:var(--success)}
.badge-status--warn{background:#FDF3E3;color:#B57A1C}
.badge-status--info{background:var(--primary-light);color:var(--primary)}

/* ---------- Hero ---------- */
.hero-cat{position:relative;overflow:hidden;background:#EAF2FB;border-bottom:1px solid var(--border)}
.hero-cat__bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.3}
.hero-cat::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(246,249,252,.95) 0%,rgba(246,249,252,.76) 54%,rgba(232,241,254,.58) 100%)}
.hero-cat__inner{position:relative;z-index:2;padding-top:72px;padding-bottom:68px;max-width:1200px}
.hero-cat__box{max-width:760px}
.hero-cat h1{margin-bottom:18px}
.hero-cat__lead{font-size:17px;line-height:1.85;color:#3F4E60;max-width:660px}
.hero-cat__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-cat__badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-cat__badges li{padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.86);border:1px solid #D7E5F7;font-size:13px;color:#41546B;font-weight:500}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--tint{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section__head{max-width:740px;margin-bottom:40px}
.section__head h2{margin-bottom:14px}
.section__head p{font-size:16px;color:#4B5A6D}
.section__head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ---------- 卡片瀑布 ---------- */
.masonry{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.m-card{grid-column:span 4;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.m-card--lg{grid-column:span 6}
.m-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#C7DDF8}
.m-card__media{overflow:hidden;background:#EDF3FA;position:relative}
.m-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.m-card--lg .m-card__media{aspect-ratio:16/9}
.m-card:not(.m-card--lg) .m-card__media{aspect-ratio:16/10}
.m-card:hover .m-card__media img{transform:scale(1.02)}
.m-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.m-card--lg .m-card__body{padding:26px}
.m-card__body h3{transition:color .2s ease}
.m-card:hover .m-card__body h3{color:var(--primary-dark)}
.m-card__desc{font-size:15px;color:#54637A;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.m-card--lg .m-card__desc{-webkit-line-clamp:3}
.m-card__foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.m-card__more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600}
.m-card__more::after{content:"→";transition:transform .2s ease}
.m-card:hover .m-card__more::after{transform:translateX(3px)}

/* ---------- 位置画像 ---------- */
.person-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.person{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:16px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.person:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#C7DDF8}
.person__top{display:flex;align-items:center;gap:14px}
.avatar{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:700;font-size:17px;background:linear-gradient(140deg,var(--primary),#61A6EF);box-shadow:0 6px 14px rgba(22,104,214,.24);flex:none}
.avatar--accent{background:linear-gradient(140deg,#FF8A54,var(--accent));box-shadow:0 6px 14px rgba(255,106,43,.24)}
.person__name{font-size:17px;font-weight:600;color:var(--text);line-height:1.35}
.person__sub{font-size:13px;color:var(--muted)}
.person__list li{position:relative;padding-left:18px;font-size:14px;color:#54637A;line-height:1.8}
.person__list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:#BED8F6}

/* ---------- 索引网格 ---------- */
.index-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.idx{display:block;padding:16px 14px;background:#fff;border:1px solid var(--border);border-radius:12px;font-size:14px;font-weight:500;color:#40526A;text-align:center;transition:border-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease}
.idx:hover{border-color:var(--primary);color:var(--primary-dark);box-shadow:var(--sh-1);transform:translateY(-2px)}
.idx span{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:2px}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{position:relative;padding:26px 22px 24px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1)}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);display:block;font-size:15px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;margin-bottom:12px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:#54637A}
.step::after{content:"";position:absolute;top:32px;right:-14px;width:14px;height:2px;background:#D7E5F7}
.step:last-child::after{display:none}

/* ---------- 信任与评价 ---------- */
.trust{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:start}
.trust__logos{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.logo-cell{height:66px;display:grid;place-items:center;background:#fff;border:1px solid var(--border);border-radius:12px;font-size:13px;color:#66768A;font-weight:600;filter:grayscale(1);transition:filter .2s ease,border-color .2s ease}
.logo-cell:hover{filter:grayscale(0);border-color:#C7DDF8}
.quotes{display:grid;grid-template-columns:1fr;gap:16px}
.quote{background:#fff;border:1px solid var(--border);border-left:3px solid var(--primary);border-radius:12px;padding:22px 24px;box-shadow:var(--sh-1)}
.quote p{font-size:15px;color:#41505F;margin-bottom:14px}
.quote footer{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.quote .avatar{width:34px;height:34px;font-size:14px}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.35fr;gap:48px;align-items:start}
.faq-side{position:sticky;top:100px}
.faq-side h2{margin-bottom:14px}
.faq-side p{font-size:15px;color:#54637A;margin-bottom:20px}
.faq{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.faq__item + .faq__item{border-top:1px solid var(--line)}
.faq__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--text);transition:color .2s ease,background-color .2s ease}
.faq__q:hover{color:var(--primary-dark);background:#FAFCFF}
.faq__icon{width:20px;height:20px;position:relative;flex:none}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.faq__icon::before{left:0;top:9px;width:20px;height:2px}
.faq__icon::after{left:9px;top:0;width:2px;height:20px}
.faq__item.is-open .faq__icon::after{transform:rotate(90deg);opacity:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq__a p{padding:0 24px 22px;font-size:15px;color:#54637A;line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,#E8F1FE 0%,#F2F8FF 55%,#FFF3EC 100%);border:1px solid var(--border);border-radius:18px;padding:44px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center}
.cta-band h2{margin-bottom:10px}
.cta-band p{font-size:15px;color:#4B5A6D;max-width:560px}
.subscribe{display:flex;align-items:center;gap:8px;padding:5px;background:#fff;border:1px solid var(--border);border-radius:13px;box-shadow:var(--sh-1);transition:border-color .2s ease,box-shadow .2s ease}
.subscribe:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,104,214,.12)}
.subscribe input{height:46px;flex:1;min-width:220px;padding:0 14px;border:0;background:transparent;outline:none;font-size:15px;color:var(--text)}
.subscribe input::placeholder{color:var(--muted)}

/* ---------- 页脚 ---------- */
.footer{background:#EEF3F9;border-top:1px solid var(--border);padding-top:56px}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.15fr;gap:32px}
.footer__brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--text);margin-bottom:14px}
.footer__col h3{font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer__col li + li{margin-top:10px}
.footer__col a{font-size:14px;color:#5A6B7F}
.footer__col a:hover{color:var(--primary)}
.footer__col p{font-size:14px;color:#5A6B7F;line-height:1.85}
.footer__bottom{margin-top:44px;border-top:1px solid #DCE6F1;padding:18px 0 26px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:var(--muted)}
.footer__bottom a{color:var(--muted)}
.footer__bottom a:hover{color:var(--primary)}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--border);color:var(--primary);display:grid;place-items:center;box-shadow:var(--sh-1);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s ease,visibility .25s ease,transform .25s ease;z-index:65}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--primary);box-shadow:var(--sh-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .search{width:150px}
  .nav__link{padding:8px 10px;font-size:14px}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .nav-toggle{display:inline-flex}
  nav[aria-label="主导航"]{position:fixed;top:0;right:0;bottom:0;width:min(84vw,320px);background:#fff;z-index:80;padding:88px 20px 28px;transform:translateX(102%);transition:transform .28s ease;box-shadow:-10px 0 32px rgba(15,27,42,.14);overflow-y:auto;flex:none}
  nav[aria-label="主导航"].is-open{transform:translateX(0)}
  .nav__menu{flex-direction:column;align-items:stretch;gap:6px}
  .nav__link{padding:12px 14px;font-size:16px;border-radius:10px}
  .nav__link.is-active::after{display:none}
  .search{display:none}
  .section{padding:64px 0}
  .m-card{grid-column:span 6}
  .m-card--lg{grid-column:span 12}
  .person-grid{grid-template-columns:repeat(2,1fr)}
  .index-grid{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .trust{grid-template-columns:1fr;gap:32px}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .faq-side{position:static}
  .cta-band{grid-template-columns:1fr;padding:34px;gap:22px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .topbar__tip{display:none}
  .hero-cat__inner{padding-top:52px;padding-bottom:48px}
  .hero-cat__lead{font-size:16px}
  .section{padding:48px 0}
  .section__head--row{flex-direction:column;align-items:flex-start;gap:12px}
  .m-card,.m-card--lg{grid-column:span 12}
  .index-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .hero-cat__cta .btn{flex:1 1 auto}
  .footer__grid{grid-template-columns:1fr;gap:26px}
  .subscribe{flex-wrap:wrap;padding:10px}
  .subscribe input{min-width:0;width:100%}
  .subscribe .btn{width:100%}
}
@media (max-width:520px){
  .person-grid{grid-template-columns:1fr}
  .trust__logos{grid-template-columns:repeat(2,1fr)}
  .hero-cat__cta{flex-direction:column;align-items:stretch}
  .hero-cat__cta .btn{width:100%}
  .faq__q{padding:16px 18px;font-size:15px}
  .faq__a p{padding:0 18px 18px}
  .cta-band{padding:24px}
  .to-top{right:14px;bottom:14px}
}

/* roulang page: category4 */
:root{
  --brand:#1668D6;
  --brand-dark:#0F4FA8;
  --brand-light:#E8F1FE;
  --accent:#FF6A2B;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --border:#E4EBF3;
  --line:#EEF2F7;
  --text:#0F1B2A;
  --text-2:#3C4A5C;
  --text-3:#7A8899;
  --ok:#12A150;
  --warn:#E8A33D;
  --err:#D94A4A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(15,27,42,.06),0 8px 24px rgba(15,27,42,.06);
  --shadow-2:0 12px 32px rgba(15,27,42,.10);
  --shadow-nav:0 2px 10px rgba(15,27,42,.06);
  --container:1200px;
  --space-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background:var(--bg);
}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.3;}
h1{font-size:clamp(30px,4.6vw,46px);font-weight:700;line-height:1.25;letter-spacing:-.4px;}
h2{font-size:clamp(24px,3vw,32px);font-weight:700;}
h3{font-size:20px;font-weight:600;line-height:1.4;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);text-decoration:underline;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
input,button{font-size:inherit;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--space-section) 0;}
.section--tight{padding:64px 0;}
.section--light{background:#FFFFFF;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--border);
  backdrop-filter:saturate(140%) blur(6px);
}
.site-header.is-scrolled{box-shadow:var(--shadow-nav);}
.nav__inner{display:flex;align-items:center;gap:24px;height:70px;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:700;color:var(--text);
  letter-spacing:.2px;white-space:nowrap;text-decoration:none;flex:0 0 auto;
}
.brand:hover{color:var(--brand-dark);text-decoration:none;}
.brand__mark{
  position:relative;flex:0 0 28px;width:28px;height:28px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand),#4C9BF5);
  box-shadow:0 6px 14px rgba(22,104,214,.26);
}
.brand__mark::after{
  content:"";position:absolute;inset:8px;border-radius:4px;background:#fff;opacity:.92;
}
.nav__inner > nav{flex:1 1 auto;display:flex;justify-content:center;}
.nav__menu{display:flex;align-items:center;gap:4px;}
.nav__link{
  display:inline-block;position:relative;padding:9px 13px;border-radius:9px;
  font-size:15px;font-weight:500;color:var(--text-2);text-decoration:none;
  transition:background .2s ease,color .2s ease;
}
.nav__link:hover{color:var(--brand-dark);background:var(--brand-light);text-decoration:none;}
.nav__link.is-active{color:var(--brand-dark);background:var(--brand-light);font-weight:600;}
.nav__link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--accent);
}
.nav__right{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto;}
.search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;
  border:1px solid var(--border);background:var(--bg);border-radius:10px;color:var(--text-3);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(22,104,214,.14);}
.search input{border:0;background:transparent;outline:none;width:148px;color:var(--text);font-family:inherit;}
.search input::placeholder{color:var(--text-3);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;border:1px solid var(--border);
  background:#fff;color:var(--text-2);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;text-decoration:none;
  border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none;}
.btn:active{transform:translateY(1px);box-shadow:none;}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,106,43,.26);}
.btn--primary:hover{background:#F05A19;color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,106,43,.30);}
.btn--ghost{background:#fff;color:var(--brand);border-color:#BBD4F4;}
.btn--ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-1px);}
.btn--blue{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(22,104,214,.22);}
.btn--blue:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn--sm{height:40px;padding:0 16px;font-size:14px;}
.btn--lg{height:52px;padding:0 26px;font-size:16px;}
.btn--block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.link-arrow svg{transition:transform .2s ease;}
.link-arrow:hover{text-decoration:none;color:var(--brand-dark);}
.link-arrow:hover svg{transform:translateX(3px);}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.7;
  background:var(--brand-light);color:var(--brand-dark);white-space:nowrap;
}
.badge--ok{background:#E6F6ED;color:#0E7C3E;}
.badge--warn{background:#FDF3E2;color:#A9701A;}
.badge--info{background:var(--brand-light);color:var(--brand-dark);}
.badge--muted{background:#EFF3F8;color:var(--text-3);}
.eyebrow{
  display:inline-block;margin-bottom:12px;font-size:13px;font-weight:700;
  letter-spacing:1.4px;color:var(--brand);text-transform:uppercase;
}

/* 页面横幅 */
.cat-hero{position:relative;overflow:hidden;background:#EAF2FC;border-bottom:1px solid var(--border);}
.cat-hero__media{position:absolute;inset:0;}
.cat-hero__media img{width:100%;height:100%;object-fit:cover;object-position:center;}
.cat-hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.92) 42%,rgba(233,242,253,.62) 72%,rgba(233,242,253,.32) 100%);
}
.cat-hero__inner{position:relative;z-index:2;padding:56px 24px 60px;max-width:1200px;margin:0 auto;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--brand);}
.crumbs span[aria-current]{color:var(--brand);font-weight:600;}
.cat-hero__wrap{max-width:660px;}
.cat-hero h1{margin-bottom:16px;}
.cat-hero__lead{font-size:17px;line-height:1.75;color:var(--text-2);margin-bottom:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-badges .badge{background:#fff;color:var(--text-2);border:1px solid var(--border);box-shadow:0 1px 2px rgba(15,27,42,.04);}

/* 筛选条 */
.filterbar{background:#fff;border-bottom:1px solid var(--border);}
.filterbar__inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 24px;flex-wrap:wrap;}
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none;}
.chips::-webkit-scrollbar{display:none;}
.chip{
  height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--border);
  background:#fff;color:var(--text-2);font-size:14px;font-weight:500;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand-dark);}
.chip.is-on{background:var(--brand-light);border-color:#BBD4F4;color:var(--brand-dark);font-weight:600;}
.filterbar__meta{font-size:13px;color:var(--text-3);display:inline-flex;align-items:center;gap:8px;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;}

/* 板块标题 */
.section__head{max-width:720px;margin-bottom:40px;}
.section__head h2{margin-bottom:14px;}
.section__lead{font-size:17px;color:var(--text-2);line-height:1.8;}
.section__head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* 对照清单 */
.checklist{border-top:1px solid var(--line);}
.check-row{
  display:grid;grid-template-columns:220px minmax(0,1fr) auto;gap:20px;align-items:start;
  padding:20px 6px;border-bottom:1px solid var(--line);
  transition:background .2s ease,padding .2s ease;
}
.check-row:hover{background:#FBFDFF;}
.check-row__name{font-weight:600;color:var(--text);font-size:16px;display:flex;align-items:center;gap:10px;}
.check-row__name .num{
  font-variant-numeric:tabular-nums;font-size:13px;font-weight:700;color:var(--brand);
  background:var(--brand-light);border-radius:6px;padding:1px 7px;
}
.check-row__desc{color:var(--text-2);font-size:15px;line-height:1.8;}
.check-row__desc b{color:var(--text);font-weight:600;}

/* 图文行 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split + .split{margin-top:64px;}
.split--reverse .split__media{order:2;}
.split__media img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:16px;border:1px solid var(--border);box-shadow:var(--shadow-1);}
.split__body h2{margin-bottom:16px;}
.split__body .eyebrow{margin-bottom:8px;}
.ticks{margin-top:20px;display:grid;gap:12px;}
.ticks li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.ticks svg{flex:0 0 18px;margin-top:4px;color:var(--brand);}

/* 指标条 */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.metric{padding:28px 24px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;}
.metric__num{font-size:32px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:-.5px;line-height:1.2;}
.metric__num span{font-size:18px;color:var(--brand);margin-left:2px;}
.metric__label{font-size:13px;color:var(--text-3);margin-top:8px;line-height:1.6;}

/* 卡片组 */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.card:hover{border-color:#BBD4F4;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.card__cover{aspect-ratio:16/9;overflow:hidden;background:#EDF2F8;}
.card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card__cover img{transform:scale(1.02);}
.card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__body h3{font-size:19px;}
.card__body p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0;}
.card:hover .card__body h3{color:var(--brand-dark);}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:56px;align-items:start;}
.faq-aside{position:sticky;top:96px;}
.faq-aside h2{margin-bottom:14px;}
.faq-list{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:#fff;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);transition:background .2s ease,color .2s ease;
}
.faq-q:hover{background:#FBFDFF;color:var(--brand-dark);}
.faq-q .ico{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;line-height:1;transition:transform .25s ease,background .2s ease;
}
.faq-item.is-open .faq-q .ico{transform:rotate(45deg);background:var(--accent);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* CTA */
.cta-band{
  background:linear-gradient(180deg,#FFFFFF,#EAF2FD);
  border:1px solid var(--border);border-radius:18px;
  padding:44px;display:grid;grid-template-columns:1fr minmax(0,420px);gap:40px;align-items:center;
  box-shadow:var(--shadow-1);
}
.cta-band h2{margin-bottom:12px;}
.cta-band p{font-size:16px;color:var(--text-2);}
.subscribe{display:flex;gap:10px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:6px;box-shadow:var(--shadow-1);}
.subscribe input{
  flex:1;min-width:0;height:46px;border:0;background:#F6F9FC;border-radius:10px;
  padding:0 16px;color:var(--text);outline:none;font-family:inherit;
  transition:box-shadow .2s ease,background .2s ease;
}
.subscribe input:focus{background:#fff;box-shadow:0 0 0 3px rgba(22,104,214,.16),inset 0 0 0 1px var(--brand);}
.cta-band__note{margin-top:12px;font-size:13px;color:var(--text-3);}

/* 页脚 */
.site-footer{background:#EEF3F9;border-top:1px solid var(--border);margin-top:96px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 40px;
}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:grid;gap:11px;}
.footer-col a,.footer-col li{font-size:14px;color:var(--text-3);line-height:1.7;}
.footer-col a:hover{color:var(--brand);}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--text);margin-bottom:14px;}
.footer-brand .brand__mark{flex:0 0 26px;width:26px;height:26px;}
.footer-desc{font-size:14px;color:var(--text-3);max-width:320px;line-height:1.8;}
.footer-bottom{
  border-top:1px solid var(--border);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* 回到顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:80;
  width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--border);
  color:var(--text-2);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);opacity:0;pointer-events:none;transition:opacity .25s ease,transform .2s ease,box-shadow .2s ease;
}
.to-top.is-on{opacity:1;pointer-events:auto;}
.to-top:hover{color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.nav-mask{
  position:fixed;inset:0;background:rgba(15,27,42,.45);z-index:75;
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
body.nav-open .nav-mask{opacity:1;pointer-events:auto;}

/* 响应式 */
@media (max-width:1279px){
  :root{--container:1120px;--space-section:84px;}
  .cards{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023px){
  :root{--space-section:64px;}
  .container{padding:0 20px;}
  .nav__inner{gap:14px;}
  .nav__inner > nav{
    position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);
    background:#fff;padding:88px 20px 28px;overflow-y:auto;
    transform:translateX(103%);transition:transform .3s ease;
    box-shadow:-14px 0 36px rgba(15,27,42,.14);z-index:78;
  }
  body.nav-open .nav__inner > nav{transform:translateX(0);}
  .nav__menu{flex-direction:column;align-items:stretch;gap:6px;}
  .nav__link{display:block;padding:13px 14px;font-size:16px;}
  .nav__link.is-active::after{left:14px;transform:none;bottom:8px;}
  .nav-toggle{display:inline-flex;}
  .search{display:none;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split--reverse .split__media{order:0;}
  .split + .split{margin-top:48px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
  .cards{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;}
  .cta-band{grid-template-columns:1fr;padding:32px;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
}
@media (max-width:767px){
  :root{--space-section:52px;}
  .container{padding:0 16px;}
  body{font-size:15.5px;}
  .brand{font-size:16.5px;}
  .brand__mark{flex:0 0 24px;width:24px;height:24px;}
  .brand__mark::after{inset:7px;}
  .cat-hero__inner{padding:36px 16px 40px;}
  .cat-hero__lead{font-size:16px;}
  .hero-actions .btn{flex:1 1 auto;}
  .check-row{grid-template-columns:1fr;gap:8px;padding:18px 4px;}
  .check-row__name{font-size:15.5px;}
  .cards{grid-template-columns:1fr;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric{padding:22px 18px;}
  .metric__num{font-size:26px;}
  .subscribe{flex-direction:column;padding:10px;}
  .subscribe .btn{width:100%;}
  .faq-q{padding:17px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 24px;gap:26px;}
  .footer-bottom{justify-content:flex-start;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .cta-band{padding:24px 18px;}
  .filterbar__meta{display:none;}
  .check-row__desc{font-size:14.5px;}
}