/* roulang page: index */
:root{
  --c-brand-500:#1E6FD9;--c-brand-600:#14549E;--c-brand-700:#0E3E7D;--c-brand-900:#08203F;
  --c-brand-300:#7FB0EE;--c-brand-050:#EEF4FD;
  --c-accent-500:#FF6A1F;--c-accent-600:#E85A12;--c-accent-050:#FFF1E8;
  --c-ink:#0B1220;--c-text:#43506B;--c-muted:#7A879C;--c-line:#E4E9F2;--c-bg:#F6F8FC;--c-surface:#FFFFFF;
  --c-ok:#16A34A;--c-warn:#F59E0B;--c-err:#DC2626;
  --r-card:16px;--r-lg:20px;--r-sm:12px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(11,18,32,.04),0 6px 18px rgba(11,18,32,.06);
  --sh-2:0 12px 32px rgba(14,62,125,.10);
  --sh-hover:0 18px 40px rgba(14,62,125,.16);
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:var(--c-brand-500);--bs-primary-rgb:30,111,217;
  --bs-body-font-family:inherit;--bs-border-radius:var(--r-sm);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:1rem;line-height:1.85;letter-spacing:.01em;
}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
a{color:var(--c-brand-500);text-decoration:none}
a:hover{color:var(--c-brand-700)}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:6px}
.mk-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.mk-num{font-variant-numeric:tabular-nums}
.mk-wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.mk-wrap{max-width:1320px}}

/* 导航 */
.mk-nav{
  position:fixed;top:0;left:0;right:0;z-index:1030;height:76px;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(11,18,32,.06);
  transition:height .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.mk-nav.is-stuck{height:64px;background:rgba(255,255,255,.96);box-shadow:0 8px 24px rgba(11,18,32,.08)}
.mk-nav__inner{display:flex;align-items:center;gap:20px;height:100%;width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.mk-nav__inner{max-width:1320px}}
.mk-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.mk-logo__mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--c-brand-500),var(--c-brand-700));display:grid;place-items:center;box-shadow:0 6px 16px rgba(30,111,217,.28)}
.mk-logo__text{font-size:1.0625rem;font-weight:700;color:var(--c-ink);line-height:1.1;letter-spacing:-.01em}
.mk-logo__sub{display:block;font-size:11px;font-weight:500;color:var(--c-muted);letter-spacing:.06em}
.mk-menu{display:flex;align-items:center;gap:28px;margin:0 auto;padding:0;list-style:none}
.mk-menu__link{font-size:.875rem;font-weight:500;color:var(--c-text);padding:6px 0;position:relative;transition:color .2s var(--ease)}
.mk-menu__link:hover{color:var(--c-brand-600)}
.mk-menu__link.is-active{color:var(--c-ink);font-weight:600}
.mk-menu__link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--c-accent-500)}
.mk-nav__actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.mk-iconbtn{width:40px;height:40px;border:1px solid var(--c-line);background:#fff;border-radius:50%;display:grid;place-items:center;color:var(--c-brand-600);transition:all .2s var(--ease)}
.mk-iconbtn:hover{border-color:var(--c-brand-300);background:var(--c-brand-050);transform:translateY(-1px)}
.mk-search{display:none;align-items:center;gap:8px;border:1px solid var(--c-line);background:#fff;border-radius:var(--r-pill);padding:0 6px 0 14px;height:40px}
.mk-search.is-open{display:flex}
.mk-search input{border:0;outline:none;font-size:.875rem;color:var(--c-ink);width:150px;background:transparent}
.mk-search button{border:0;background:transparent;color:var(--c-brand-600);font-size:.8125rem;font-weight:600}
.mk-burger{width:44px;height:44px;border:1px solid var(--c-line);background:#fff;border-radius:12px;display:none;place-items:center;color:var(--c-ink)}
.mk-drawer{width:300px}
.mk-drawer .offcanvas-header{border-bottom:1px solid var(--c-line)}
.mk-drawer__group{font-size:.8125rem;color:var(--c-muted);margin:18px 0 8px}
.mk-drawer__link{display:block;padding:11px 0;color:var(--c-ink);font-weight:500;border-bottom:1px solid var(--c-line)}
.mk-drawer__link.is-active{color:var(--c-brand-600)}
.mk-drawer__foot{position:sticky;bottom:0;background:#fff;padding-top:16px}

/* 按钮 */
.mk-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-weight:600;font-size:.9375rem;padding:0 26px;height:50px;border:1px solid transparent;cursor:pointer;transition:all .22s var(--ease);white-space:nowrap}
.mk-btn--primary{background:var(--c-accent-500);color:#fff;box-shadow:0 8px 20px rgba(255,106,31,.22)}
.mk-btn--primary:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.mk-btn--primary:active{transform:translateY(0)}
.mk-btn--ghost{background:#fff;border-color:var(--c-line);color:var(--c-brand-600);border-radius:var(--r-sm);height:48px}
.mk-btn--ghost:hover{border-color:var(--c-brand-500);background:var(--c-brand-050);color:var(--c-brand-700)}
.mk-btn--light{background:#fff;color:var(--c-brand-900);border-radius:14px;height:52px;padding:0 22px}
.mk-btn--light:hover{transform:translateY(-2px);box-shadow:var(--sh-2);color:var(--c-brand-900)}
.mk-btn--outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;border-radius:14px;height:52px}
.mk-btn--outline-light:hover{border-color:#fff;background:rgba(255,255,255,.10);color:#fff}
.mk-btn--sm{height:42px;font-size:.875rem;padding:0 20px}
.mk-btn[disabled],.mk-btn.is-disabled{background:var(--c-line);color:var(--c-muted);cursor:not-allowed;box-shadow:none;transform:none}
.mk-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:.875rem;color:var(--c-brand-500)}
.mk-link svg{transition:transform .2s var(--ease)}
.mk-link:hover svg{transform:translateX(3px)}
.mk-link:focus-visible{text-decoration:underline}

/* Hero */
.mk-hero{position:relative;padding:140px 0 72px;background:linear-gradient(180deg,#fff 0%,var(--c-bg) 100%);border-bottom:1px solid var(--c-line);overflow:hidden}
.mk-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.16}
.mk-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.94) 0%,rgba(255,255,255,.78) 46%,rgba(255,255,255,.55) 100%)}
.mk-hero > .mk-wrap{position:relative;z-index:2}
.mk-hero__grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;min-height:clamp(420px,62vh,660px)}
.mk-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8125rem;font-weight:600;color:var(--c-brand-600);background:var(--c-brand-050);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:18px}
.mk-hero h1{font-size:clamp(2rem,4.2vw,3.25rem);line-height:1.15;font-weight:700;letter-spacing:-.02em;margin-bottom:16px}
.mk-hero__sub{font-size:1.0625rem;color:var(--c-text);max-width:24em;margin-bottom:26px}
.mk-hero__btns{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.mk-hero__note{font-size:.8125rem;color:var(--c-muted);margin-bottom:26px}
.mk-badges{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;max-width:520px;padding-top:22px;border-top:1px solid var(--c-line)}
.mk-badges__num{font-size:1.5rem;font-weight:700;color:var(--c-ink);line-height:1.2}
.mk-badges__label{font-size:.75rem;color:var(--c-muted)}
.mk-hero__visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/11;background:var(--c-brand-050)}
.mk-hero__visual img{width:100%;height:100%;object-fit:cover}
.mk-hero__visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(30,111,217,.12),rgba(8,32,63,.28))}
.mk-hero__data{position:absolute;right:16px;bottom:16px;z-index:3;background:#fff;border-radius:14px;padding:12px 16px;box-shadow:var(--sh-2);min-width:150px}
.mk-hero__data b{display:block;font-size:1.25rem;color:var(--c-brand-600);line-height:1.2}
.mk-hero__data span{font-size:.75rem;color:var(--c-muted)}

/* 区块 */
.mk-section{padding:96px 0}
.mk-section--tint{background:#fff}
.mk-section__head{max-width:720px;margin-bottom:40px}
.mk-section__head h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25;margin-bottom:12px}
.mk-section__head p{color:var(--c-text);margin:0}
.mk-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.mk-head-row h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25;margin-bottom:8px}
.mk-head-row p{margin:0;color:var(--c-text)}

/* 功能截图轮播 */
.mk-shots{position:relative}
.mk-shots__track{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 22px;scrollbar-width:none}
.mk-shots__track::-webkit-scrollbar{display:none}
.mk-shot{flex:0 0 calc((100% - 48px)/2.6);scroll-snap-align:start;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:16px;transition:all .22s var(--ease)}
.mk-shot:hover{transform:translateY(-4px);border-color:var(--c-brand-300);box-shadow:var(--sh-hover)}
.mk-shot__frame{aspect-ratio:16/10;border-radius:12px;overflow:hidden;background:var(--c-brand-050);margin-bottom:14px}
.mk-shot__frame img{width:100%;height:100%;object-fit:cover}
.mk-shot h3{font-size:1.0625rem;margin-bottom:6px}
.mk-shot p{font-size:.875rem;color:var(--c-muted);margin:0}
.mk-shots__nav{display:flex;align-items:center;gap:12px}
.mk-arrow{width:44px;height:44px;border-radius:50%;border:1px solid var(--c-line);background:#fff;display:grid;place-items:center;color:var(--c-brand-600);transition:all .2s var(--ease)}
.mk-arrow:hover{background:var(--c-brand-500);border-color:var(--c-brand-500);color:#fff}
.mk-shots__progress{flex:1;height:4px;border-radius:4px;background:var(--c-line);overflow:hidden;max-width:280px}
.mk-shots__bar{height:100%;width:20%;background:var(--c-brand-500);border-radius:4px;transition:width .2s var(--ease)}

/* 交错图文 */
.mk-split__row{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;padding:48px 0;border-bottom:1px solid var(--c-line)}
.mk-split__row:last-child{border-bottom:0}
.mk-split__row.is-rev{grid-template-columns:7fr 5fr}
.mk-split__row.is-rev .mk-split__media{order:2}
.mk-split__media{border-radius:var(--r-card);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--sh-1);background:var(--c-brand-050)}
.mk-split__media img{width:100%;height:100%;object-fit:cover}
.mk-split__body h3{font-size:1.25rem;margin-bottom:10px}
.mk-points{list-style:none;padding:0;margin:16px 0 0}
.mk-points li{position:relative;padding-left:20px;margin-bottom:8px;font-size:.9375rem}
.mk-points li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--c-accent-500)}

/* 数据条 */
.mk-stats{background:var(--c-brand-050);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.mk-stats__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.mk-stats__item{padding:40px 24px;text-align:center;border-right:1px solid rgba(30,111,217,.14)}
.mk-stats__item:last-child{border-right:0}
.mk-stats__num{font-size:2rem;font-weight:700;color:var(--c-brand-700);line-height:1.2;font-variant-numeric:tabular-nums}
.mk-stats__label{font-size:.8125rem;color:var(--c-muted)}

/* 系统要求 */
.mk-req{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mk-req__card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:28px 24px;transition:all .22s var(--ease)}
.mk-req__card:hover{transform:translateY(-4px);border-color:var(--c-brand-300);box-shadow:var(--sh-hover)}
.mk-req__head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.mk-req__icon{width:40px;height:40px;border-radius:12px;background:var(--c-brand-050);color:var(--c-brand-600);display:grid;place-items:center}
.mk-req__head h3{font-size:1.125rem}
.mk-dl{margin:0}
.mk-dl div{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--c-line)}
.mk-dl div:last-child{border-bottom:0}
.mk-dl dt{font-size:.8125rem;color:var(--c-muted);font-weight:400;margin:0}
.mk-dl dd{font-size:.9375rem;font-weight:600;color:var(--c-ink);margin:0;font-variant-numeric:tabular-nums}
.mk-req__note{font-size:.75rem;color:var(--c-muted);margin:10px 0 0}

/* 资讯列表 */
.mk-news{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start}
.mk-headline{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:all .22s var(--ease)}
.mk-headline:hover{transform:translateY(-4px);border-color:var(--c-brand-300);box-shadow:var(--sh-hover)}
.mk-headline__img{aspect-ratio:4/3;overflow:hidden;background:var(--c-brand-050)}
.mk-headline__img img{width:100%;height:100%;object-fit:cover}
.mk-headline__body{padding:24px}
.mk-headline h3{font-size:1.1875rem;line-height:1.45;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mk-headline p{font-size:.9375rem;color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
.mk-badge{display:inline-block;font-size:.75rem;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);background:var(--c-brand-050);color:var(--c-brand-600)}
.mk-badge--accent{background:var(--c-accent-050);color:var(--c-accent-600)}
.mk-meta{font-size:.8125rem;color:var(--c-muted)}
.mk-mini-list{list-style:none;margin:0;padding:0;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.mk-mini{display:flex;gap:16px;padding:16px 20px;border-bottom:1px solid var(--c-line);transition:background .2s var(--ease)}
.mk-mini:last-child{border-bottom:0}
.mk-mini:hover{background:var(--c-brand-050)}
.mk-mini__thumb{width:80px;height:80px;border-radius:12px;overflow:hidden;flex:0 0 80px;background:var(--c-brand-050)}
.mk-mini__thumb img{width:100%;height:100%;object-fit:cover}
.mk-mini__body{min-width:0}
.mk-mini h3{font-size:1rem;line-height:1.45;margin:0 0 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mk-mini:hover h3{color:var(--c-brand-600)}
.mk-mini p{font-size:.8125rem;color:var(--c-muted);margin:0 0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mk-empty{background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card);min-height:240px;display:grid;place-items:center;text-align:center;padding:32px 24px}
.mk-empty svg{color:var(--c-brand-300);margin-bottom:10px}
.mk-empty strong{display:block;color:var(--c-ink);margin-bottom:6px}

/* 评价墙 */
.mk-reviews{column-count:3;column-gap:20px}
.mk-review{break-inside:avoid;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;margin-bottom:20px;position:relative;overflow:hidden;transition:all .22s var(--ease)}
.mk-review:hover{transform:translateY(-4px);border-color:var(--c-brand-300);box-shadow:var(--sh-hover)}
.mk-review::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--c-brand-500)}
.mk-review.is-accent::before{background:var(--c-accent-500)}
.mk-review__head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.mk-avatar{width:40px;height:40px;border-radius:50%;background:var(--c-brand-050);color:var(--c-brand-600);display:grid;place-items:center;font-weight:700;flex:0 0 40px}
.mk-review__name{font-size:.9375rem;font-weight:600;color:var(--c-ink);line-height:1.3}
.mk-review__tag{font-size:.75rem;color:var(--c-muted)}
.mk-review p{font-size:.9375rem;margin-bottom:14px}
.mk-review__foot{display:flex;align-items:center;justify-content:space-between;font-size:.75rem;color:var(--c-muted)}
.mk-stars{color:var(--c-accent-500);letter-spacing:2px}

/* 下载区 */
.mk-download{background:linear-gradient(8deg,var(--c-brand-900),var(--c-brand-700));color:#fff;padding:88px 0;position:relative;overflow:hidden}
.mk-download::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.12}
.mk-download > .mk-wrap{position:relative;z-index:2}
.mk-download__grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.mk-download h2{color:#fff;font-size:clamp(1.5rem,2.4vw,2.125rem);margin-bottom:12px}
.mk-download p{color:#C7D3E6;margin-bottom:16px}
.mk-download__meta{display:flex;gap:24px;flex-wrap:wrap;font-size:.875rem;color:#C7D3E6;font-variant-numeric:tabular-nums}
.mk-download__meta b{color:#fff;font-weight:600}
.mk-btn-row{display:flex;flex-direction:column;gap:12px;max-width:420px}
.mk-btn-row .mk-btn{width:100%}
.mk-qr{display:flex;align-items:center;gap:16px;margin-top:20px}
.mk-qr__box{width:120px;height:120px;background:#fff;border-radius:12px;padding:8px;box-shadow:0 0 0 6px rgba(255,255,255,.12)}
.mk-qr__box img{width:100%;height:100%;object-fit:contain}
.mk-qr span{font-size:.75rem;color:#C7D3E6}

/* FAQ */
.mk-accordion .accordion-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;box-shadow:var(--sh-1);margin-bottom:12px;overflow:hidden}
.mk-accordion .accordion-button{background:#fff;color:var(--c-ink);font-weight:600;font-size:1rem;padding:20px 56px 20px 24px;box-shadow:none;border-radius:14px;position:relative}
.mk-accordion .accordion-button::before{content:"";position:absolute;left:0;top:0;bottom:0;width:0;background:var(--c-accent-500);transition:width .2s var(--ease)}
.mk-accordion .accordion-button:not(.collapsed){color:var(--c-brand-600)}
.mk-accordion .accordion-button:not(.collapsed)::before{width:3px}
.mk-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-brand-500);outline-offset:-2px}
.mk-accordion .accordion-button::after{
  content:"";width:14px;height:14px;background:
   linear-gradient(var(--c-brand-600),var(--c-brand-600)) center/14px 2px no-repeat,
   linear-gradient(var(--c-brand-600),var(--c-brand-600)) center/2px 14px no-repeat;
}
.mk-accordion .accordion-button:not(.collapsed)::after{
  background:linear-gradient(var(--c-brand-600),var(--c-brand-600)) center/14px 2px no-repeat;
  transform:none;
}
.mk-accordion .accordion-body{padding:0 24px 22px;font-size:1rem;line-height:1.85;color:var(--c-text);max-width:68em}

/* 页脚 */
.mk-footer{background:linear-gradient(8deg,var(--c-brand-900),var(--c-brand-700));color:#C7D3E6;padding:72px 0 0}
.mk-footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.mk-footer h3{color:#fff;font-size:.9375rem;margin-bottom:16px;font-weight:600}
.mk-footer a{color:#C7D3E6;font-size:.875rem;display:inline-block;transition:all .2s var(--ease)}
.mk-footer a:hover{color:#fff;transform:translateX(2px)}
.mk-footer ul{list-style:none;padding:0;margin:0}
.mk-footer li{margin-bottom:10px}
.mk-footer__brand p{font-size:.875rem;margin:16px 0;max-width:30em}
.mk-footer__bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.8125rem}
.mk-footer .mk-logo__text{color:#fff}
.mk-footer .mk-logo__sub{color:#8FA5C4}

/* 动效 */
.mk-rise{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.mk-rise.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .mk-rise{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* 响应式 */
@media (max-width:1199px){
  .mk-shot{flex:0 0 calc((100% - 24px)/1.6)}
}
@media (max-width:991px){
  .mk-menu{display:none}
  .mk-burger{display:grid}
  .mk-iconbtn{display:none}
  .mk-hero{padding:120px 0 56px}
  .mk-hero__grid{grid-template-columns:1fr;gap:32px;min-height:0}
  .mk-hero__btns .mk-btn{width:100%}
  .mk-section{padding:64px 0}
  .mk-split__row,.mk-split__row.is-rev{grid-template-columns:1fr;gap:24px}
  .mk-split__row.is-rev .mk-split__media{order:0}
  .mk-stats__grid{grid-template-columns:repeat(2,1fr)}
  .mk-stats__item:nth-child(2){border-right:0}
  .mk-stats__item:nth-child(1),.mk-stats__item:nth-child(2){border-bottom:1px solid rgba(30,111,217,.14)}
  .mk-req{grid-template-columns:1fr 1fr;gap:16px}
  .mk-news{grid-template-columns:1fr}
  .mk-reviews{column-count:2}
  .mk-download__grid{grid-template-columns:1fr;gap:32px}
  .mk-btn-row{max-width:none}
  .mk-footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .mk-wrap{padding:0 16px}
  .mk-nav__inner{padding:0 16px;gap:12px}
  .mk-hero{padding:104px 0 48px}
  .mk-section{padding:48px 0}
  .mk-shot{flex:0 0 100%}
  .mk-badges{grid-template-columns:1fr;gap:12px;padding-top:18px}
  .mk-badges__item{display:flex;align-items:baseline;gap:10px}
  .mk-req{grid-template-columns:1fr;gap:12px}
  .mk-reviews{column-count:1}
  .mk-download{padding:56px 0}
  .mk-qr{flex-direction:column;align-items:flex-start}
  .mk-footer__grid{grid-template-columns:1fr;gap:24px}
  .mk-footer__bottom{flex-direction:column;align-items:flex-start}
  .mk-mini__thumb{width:64px;height:64px;flex:0 0 64px}
}
@media (max-width:360px){
  .mk-logo__text{font-size:.9375rem}
  .mk-logo__sub{font-size:10px}
  .mk-btn{padding:0 18px;font-size:.875rem}
}

/* roulang page: article */
:root{
  --c-brand-900:#08203F; --c-brand-700:#0E3E7D; --c-brand-600:#14549E;
  --c-brand-500:#1E6FD9; --c-brand-300:#7FB0EE; --c-brand-050:#EEF4FD;
  --c-accent-500:#FF6A1F; --c-accent-600:#E85A12; --c-accent-050:#FFF1E8;
  --c-ink:#0B1220; --c-text:#43506B; --c-muted:#7A879C;
  --c-line:#E4E9F2; --c-bg:#F6F8FC; --c-surface:#FFFFFF;
  --c-ok:#16A34A; --c-warn:#F59E0B; --c-err:#DC2626;
  --r-card:16px; --r-lg:20px; --r-md:12px; --r-pill:999px; --r-faq:14px;
  --sh-1:0 1px 2px rgba(11,18,32,.04), 0 6px 18px rgba(11,18,32,.06);
  --sh-2:0 12px 32px rgba(14,62,125,.10);
  --sh-hover:0 18px 40px rgba(14,62,125,.16);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#1E6FD9; --bs-primary-rgb:30,111,217;
  --bs-body-color:#43506B; --bs-body-bg:#F6F8FC;
  --bs-border-color:#E4E9F2; --bs-border-radius:12px;
  --bs-link-color:#1E6FD9; --bs-link-hover-color:#14549E;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-body-font-family:var(--bs-font-sans-serif);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--bs-font-sans-serif);font-size:16px;line-height:1.85;
  color:var(--c-text);background:var(--c-bg);overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-brand-500);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--c-brand-600)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;line-height:1.3}
h1{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.35;letter-spacing:-.01em}
h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25}
h3{font-size:1.1875rem;font-weight:600;line-height:1.4}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
.mk-num,.mk-stat__num,.mk-article-hero__meta em{font-variant-numeric:tabular-nums}

/* ---------- Bootstrap 重塑 ---------- */
.btn,.btn:focus,.btn:active{box-shadow:none!important}
.btn{border-radius:var(--r-md);font-weight:600;border-width:1px}
.card{border-radius:var(--r-card);border:1px solid var(--c-line);box-shadow:var(--sh-1);background:var(--c-surface)}
.carousel-indicators [data-bs-target]{width:24px;height:4px;border-radius:var(--r-pill);background:var(--c-brand-300);border:0}
.carousel-indicators .active{background:var(--c-brand-500)}
.accordion-item{border:0;background:transparent}
.accordion-button{box-shadow:none!important;background:var(--c-surface);color:var(--c-ink);font-weight:600}
.accordion-button:not(.collapsed){color:var(--c-brand-600);background:var(--c-surface)}
.form-control,.form-select{
  height:48px;border-radius:var(--r-md);border:1px solid var(--c-line);
  color:var(--c-ink);font-size:.9375rem;background:var(--c-surface);
}
.form-control:focus,.form-select:focus{
  border-color:var(--c-brand-500);
  box-shadow:0 0 0 3px rgba(30,111,217,.15);background:var(--c-surface);
}
.pagination .page-link{border-radius:var(--r-md);border-color:var(--c-line);color:var(--c-brand-600)}
.pagination .page-link:hover{background:var(--c-brand-050);color:var(--c-brand-700)}

/* ---------- 容器 ---------- */
.mk-wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.mk-wrap{max-width:1320px}}

/* ---------- 按钮 ---------- */
.mk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 26px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:.9375rem;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.mk-btn--primary{background:var(--c-accent-500);color:#fff}
.mk-btn--primary:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.mk-btn--primary:active{transform:translateY(0)}
.mk-btn--ghost{background:var(--c-surface);color:var(--c-brand-600);border-color:var(--c-line);border-radius:var(--r-md)}
.mk-btn--ghost:hover{border-color:var(--c-brand-500);background:var(--c-brand-050);color:var(--c-brand-700)}
.mk-btn--sm{height:42px;padding:0 18px;font-size:.875rem}
.mk-btn--block{width:100%}
.mk-btn[disabled],.mk-btn.is-disabled{background:var(--c-line);color:var(--c-muted);cursor:not-allowed;transform:none;box-shadow:none}
.mk-textlink{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand-500);font-weight:600;font-size:.9375rem;background:none;border:0;padding:0;cursor:pointer}
.mk-textlink svg{transition:transform .22s var(--ease)}
.mk-textlink:hover{color:var(--c-brand-700)}
.mk-textlink:hover svg{transform:translateX(3px)}
.mk-backlink{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand-500);font-size:.875rem;font-weight:600;margin-bottom:20px}
.mk-backlink svg{transition:transform .22s var(--ease)}
.mk-backlink:hover svg{transform:translateX(-3px)}

/* ---------- 徽章 ---------- */
.mk-badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-brand-050);color:var(--c-brand-600);font-size:12px;font-weight:600;line-height:1.6;
}
.mk-badge--accent{background:var(--c-accent-050);color:var(--c-accent-600)}
.mk-badge--line{background:transparent;border:1px solid var(--c-line);color:var(--c-muted)}

/* ---------- 导航 ---------- */
.mk-header{
  position:fixed;inset:0 0 auto 0;z-index:1040;height:76px;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(11,18,32,.06);
  transition:height .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.mk-header.is-stuck{height:64px;background:rgba(255,255,255,.96);box-shadow:0 8px 24px rgba(11,18,32,.08)}
.mk-header__inner{display:flex;align-items:center;gap:24px;height:100%}
.mk-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-ink)}
.mk-logo:hover{color:var(--c-ink)}
.mk-logo__mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-brand-500),var(--c-brand-700));
  box-shadow:0 6px 16px rgba(14,62,125,.24);
}
.mk-logo__box{display:flex;flex-direction:column;line-height:1.15}
.mk-logo__text{font-size:1.0625rem;font-weight:700;letter-spacing:-.01em;color:var(--c-ink)}
.mk-logo__sub{font-size:.6875rem;color:var(--c-muted);letter-spacing:.14em}
.mk-nav{flex:1 1 auto;display:flex;justify-content:center}
.mk-menu{display:flex;align-items:center;gap:28px;list-style:none}
.mk-menu__link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:.875rem;font-weight:500;color:var(--c-text);
}
.mk-menu__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-accent-500);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.mk-menu__link:hover{color:var(--c-brand-600)}
.mk-menu__link.is-active{color:var(--c-ink);font-weight:600}
.mk-menu__link.is-active::after{transform:scaleX(1)}
.mk-header__actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.mk-iconbtn{
  width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r-md);
  background:transparent;border:1px solid var(--c-line);color:var(--c-brand-600);cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.mk-iconbtn:hover{background:var(--c-brand-050);border-color:var(--c-brand-300);color:var(--c-brand-700)}
.mk-burger{display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-md);background:transparent;cursor:pointer;padding:0;place-items:center}
.mk-burger span{display:block;width:18px;height:2px;margin:3px auto;background:var(--c-brand-700);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.mk-searchbar{display:none;border-top:1px solid var(--c-line);background:rgba(255,255,255,.98)}
.mk-searchbar.is-open{display:block}
.mk-searchbar__inner{display:flex;gap:12px;padding-top:12px;padding-bottom:12px}
.mk-input{
  flex:1 1 auto;height:48px;border-radius:var(--r-md);border:1px solid var(--c-line);
  padding:0 16px;font-size:.9375rem;color:var(--c-ink);background:var(--c-surface);
}
.mk-input::placeholder{color:var(--c-muted)}
.mk-input:focus{outline:none;border-color:var(--c-brand-500);box-shadow:0 0 0 3px rgba(30,111,217,.15)}

/* 移动抽屉 */
.mk-drawer{position:fixed;inset:0;z-index:1060;display:none}
.mk-drawer.is-open{display:block}
.mk-drawer__mask{position:absolute;inset:0;background:rgba(8,32,63,.42);border:0;padding:0;cursor:pointer}
.mk-drawer__panel{
  position:absolute;top:0;right:0;bottom:0;width:min(84vw,340px);background:var(--c-surface);
  padding:24px 20px 96px;overflow-y:auto;box-shadow:-12px 0 40px rgba(11,18,32,.18);
  animation:mkDrawerIn .24s var(--ease);
}
@keyframes mkDrawerIn{from{transform:translateX(24px);opacity:.6}to{transform:none;opacity:1}}
.mk-drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.mk-drawer__group{font-size:.8125rem;color:var(--c-muted);font-weight:600;margin:0 0 10px}
.mk-drawer__list{list-style:none;margin-bottom:24px}
.mk-drawer__list a{display:block;padding:12px 0;border-bottom:1px solid var(--c-line);color:var(--c-ink);font-weight:500;font-size:.9375rem}
.mk-drawer__list a:hover{color:var(--c-brand-600)}
.mk-drawer__cta{position:absolute;left:20px;right:20px;bottom:24px;width:auto}

/* ---------- 标题带 ---------- */
.mk-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line);background:var(--c-brand-050)}
.mk-hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.16;
}
.mk-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.86),rgba(255,255,255,.94));
}
.mk-hero__inner{position:relative;z-index:2}
.mk-hero--article{padding:150px 0 56px}
.mk-hero--article h1{margin:16px 0 14px;max-width:26em}
.mk-hero__lede{max-width:44em;font-size:1rem;color:var(--c-text);margin:0 0 14px}
.mk-article-hero__meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:.8125rem;color:var(--c-muted);margin:0}
.mk-dot{color:var(--c-brand-300)}
.mk-crumb{font-size:.8125rem;color:var(--c-muted)}
.mk-crumb ol{display:flex;align-items:center;gap:8px;list-style:none;overflow-x:auto;white-space:nowrap;scrollbar-width:none}
.mk-crumb ol::-webkit-scrollbar{display:none}
.mk-crumb a{color:var(--c-muted)}
.mk-crumb a:hover{color:var(--c-brand-600)}
.mk-crumb__sep{color:var(--c-brand-300)}
.mk-crumb .is-current{color:var(--c-ink);font-weight:600}

/* ---------- 板块 ---------- */
.mk-section{padding:88px 0}
.mk-section--tight{padding:64px 0}
.mk-section--white{background:var(--c-surface)}
.mk-section--article{padding:56px 0 88px}
.mk-section__head{margin-bottom:32px;max-width:52em}
.mk-section__head h2{margin-bottom:10px}
.mk-section__head p{margin:0;color:var(--c-text)}

/* ---------- 文章布局 ---------- */
.mk-article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px}
@media (min-width:1200px){.mk-article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:48px}}
.mk-article-main{min-width:0;max-width:760px}
.mk-prose{font-size:1.05rem;line-height:1.9;color:var(--c-text)}
.mk-prose>*+*{margin-top:1.1em}
.mk-prose p{max-width:38em;margin:0 0 1.1em}
.mk-prose h2{
  margin:40px 0 14px;padding-left:14px;font-size:clamp(1.25rem,2vw,1.5rem);
  border-left:4px solid var(--c-brand-500);line-height:1.35;
}
.mk-prose h3{margin:28px 0 10px;font-size:1.125rem}
.mk-prose h4{margin:24px 0 8px;font-size:1rem}
.mk-prose a{color:var(--c-brand-500);text-decoration:underline;text-underline-offset:3px}
.mk-prose a:hover{color:var(--c-brand-700)}
.mk-prose img{border-radius:14px;width:100%;margin:8px 0 6px}
.mk-prose ul,.mk-prose ol{padding-left:1.3em;max-width:38em}
.mk-prose li{margin-bottom:.5em}
.mk-prose ul li::marker{color:var(--c-accent-500)}
.mk-prose ol li::marker{color:var(--c-accent-500);font-weight:700}
.mk-prose blockquote{
  margin:24px 0;padding:16px 22px;background:var(--c-brand-050);
  border-left:4px solid var(--c-accent-500);border-radius:0 12px 12px 0;color:var(--c-ink);
}
.mk-prose blockquote p:last-child{margin-bottom:0}
.mk-prose table{width:100%;border-collapse:collapse;border-radius:12px;overflow:hidden;font-size:.9375rem;box-shadow:var(--sh-1)}
.mk-prose thead th{background:var(--c-brand-500);color:#fff;text-align:left;padding:12px 14px;font-weight:600;border:0}
.mk-prose tbody td{padding:12px 14px;border-top:1px solid var(--c-line)}
.mk-prose tbody tr:nth-child(even){background:#F9FBFF}
.mk-prose strong{background:var(--c-accent-050);color:var(--c-accent-600);padding:1px 6px;border-radius:6px;font-weight:600}
.mk-prose hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}
.mk-prose figcaption,.mk-prose .wp-caption-text{text-align:center;font-size:.8125rem;color:var(--c-muted);margin-top:8px}

/* 空态 */
.mk-empty{
  min-height:240px;display:grid;place-items:center;text-align:center;gap:6px;
  padding:40px 24px;background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-lg);
}
.mk-empty svg{color:var(--c-brand-300);margin-bottom:4px}
.mk-empty__title{font-size:1.0625rem;font-weight:600;color:var(--c-ink);margin:0}
.mk-empty__desc{font-size:.875rem;color:var(--c-muted);margin:0 0 12px}

/* 文末 */
.mk-article-foot{
  margin-top:40px;padding-top:24px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.mk-tags{display:flex;flex-wrap:wrap;gap:8px;list-style:none}
.mk-tags a{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-brand-050);color:var(--c-brand-600);font-size:.8125rem;font-weight:600;
}
.mk-tags a:hover{background:var(--c-brand-300);color:#fff}
.mk-share{display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--c-muted)}
.mk-share__btn{
  width:38px;height:38px;display:grid;place-items:center;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-brand-600);cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.mk-share__btn:hover{background:var(--c-brand-050);border-color:var(--c-brand-300);transform:translateY(-2px)}

/* 侧栏 */
.mk-side{display:flex;flex-direction:column;gap:20px;min-width:0}
.mk-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
}
.mk-card__title{font-size:1rem;font-weight:700;color:var(--c-ink);margin:0 0 14px;display:flex;align-items:center;gap:8px}
.mk-card__title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--c-accent-500)}
.mk-toc{list-style:none;display:flex;flex-direction:column;gap:2px}
.mk-toc a{
  display:block;padding:8px 10px;font-size:.875rem;color:var(--c-text);
  border-left:3px solid transparent;border-radius:0 8px 8px 0;line-height:1.6;
}
.mk-toc a:hover{background:var(--c-brand-050);color:var(--c-brand-600)}
.mk-toc a.is-current{border-left-color:var(--c-accent-500);color:var(--c-brand-600);font-weight:600;background:var(--c-brand-050)}
.mk-side--sticky{position:sticky;top:96px}
.mk-dlcard__media{border-radius:var(--r-md);overflow:hidden;aspect-ratio:4/3;background:var(--c-brand-050);margin-bottom:16px}
.mk-dlcard__media img{width:100%;height:100%;object-fit:cover}
.mk-dlcard p{font-size:.875rem;color:var(--c-muted);margin:0 0 14px}

/* 上下篇 */
.mk-pn{display:grid;grid-template-columns:1fr;gap:16px;margin-top:40px}
@media (min-width:768px){.mk-pn{grid-template-columns:1fr 1fr}}
.mk-pn__item{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.mk-pn__item:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-300)}
.mk-pn__item--next{text-align:right}
.mk-pn__label{display:block;font-size:.8125rem;color:var(--c-muted);margin-bottom:6px}
.mk-pn__title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:.9375rem;font-weight:600;color:var(--c-ink);line-height:1.55;
}
.mk-pn__item:hover .mk-pn__title{color:var(--c-brand-600)}

/* 相关推荐 */
.mk-grid3{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.mk-grid3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1200px){.mk-grid3{grid-template-columns:repeat(3,minmax(0,1fr))}}
.mk-postcard{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.mk-postcard:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-300)}
.mk-ratio{position:relative;aspect-ratio:4/3;background:var(--c-brand-050);overflow:hidden}
.mk-ratio img{width:100%;height:100%;object-fit:cover}
.mk-postcard__body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.mk-postcard__title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:1.0625rem;font-weight:600;color:var(--c-ink);line-height:1.45;
}
.mk-postcard:hover .mk-postcard__title{color:var(--c-brand-600)}
.mk-postcard__desc{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:.875rem;color:var(--c-text);line-height:1.7;margin:0;
}
.mk-postcard__meta{margin-top:auto;font-size:.8125rem;color:var(--c-muted);display:flex;align-items:center;gap:8px}

/* 浅色下载 CTA */
.mk-cta-lite{
  margin-top:48px;background:var(--c-brand-050);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.mk-cta-lite h2{font-size:clamp(1.25rem,2vw,1.5rem);margin-bottom:8px}
.mk-cta-lite p{margin:0;font-size:.9375rem;color:var(--c-text)}
.mk-cta-lite__meta{margin-top:10px;font-size:.8125rem;color:var(--c-muted);font-variant-numeric:tabular-nums}

/* ---------- 页脚 ---------- */
.mk-footer{
  margin-top:80px;color:#C7D3E6;
  background:linear-gradient(180deg,var(--c-brand-900),var(--c-brand-700));
}
.mk-footer .mk-wrap{padding-top:64px;padding-bottom:24px}
.mk-footer__grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:576px){.mk-footer__grid{grid-template-columns:1fr 1fr}}
@media (min-width:992px){.mk-footer__grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.mk-footer__brand p{font-size:.875rem;line-height:1.8;margin:16px 0 12px;color:#C7D3E6}
.mk-footer__brand a{color:#fff;font-size:.875rem}
.mk-footer .mk-logo__text{color:#fff}
.mk-footer .mk-logo__sub{color:#9FB4D2}
.mk-footer h3{color:#fff;font-size:.9375rem;font-weight:600;margin-bottom:14px}
.mk-footer ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.mk-footer ul a{color:#C7D3E6;font-size:.875rem;display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.mk-footer ul a:hover{color:#fff;transform:translateX(2px)}
.mk-footer__bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:.8125rem;color:#9FB4D2;
}

/* ---------- 入场动效 ---------- */
.mk-reveal{opacity:0;transform:translateY(12px);transition:opacity .24s var(--ease),transform .24s var(--ease)}
.mk-reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .mk-side--sticky{position:static}
}
@media (max-width:991px){
  .mk-menu{gap:20px}
  .mk-menu__link{font-size:.8125rem}
  .mk-section{padding:64px 0}
  .mk-cta-lite{padding:32px}
}
@media (max-width:860px){
  .mk-nav{display:none}
  .mk-burger{display:grid}
  .mk-header__actions .mk-btn{display:none}
}
@media (max-width:767px){
  .mk-wrap{padding:0 16px}
  .mk-hero--article{padding:120px 0 44px}
  .mk-section{padding:48px 0}
  .mk-section--article{padding:40px 0 64px}
  .mk-cta-lite{padding:24px;border-radius:var(--r-card)}
  .mk-cta-lite .mk-btn{width:100%}
  .mk-card{padding:20px}
  .mk-footer .mk-wrap{padding-top:48px}
}
@media (max-width:575px){
  .mk-postcard__title{font-size:1rem}
  .mk-article-hero__meta{font-size:.75rem}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .mk-reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --c-brand-500:#1E6FD9;
  --c-brand-600:#14549E;
  --c-brand-700:#0E3E7D;
  --c-brand-900:#08203F;
  --c-brand-300:#7FB0EE;
  --c-brand-050:#EEF4FD;
  --c-accent-500:#FF6A1F;
  --c-accent-600:#E85A12;
  --c-accent-050:#FFF1E8;
  --c-ink:#0B1220;
  --c-text:#43506B;
  --c-muted:#7A879C;
  --c-line:#E4E9F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-ok:#16A34A;
  --c-warn:#F59E0B;
  --c-err:#DC2626;
  --r-card:16px;
  --r-media:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,18,32,.04),0 6px 18px rgba(11,18,32,.06);
  --sh-2:0 12px 32px rgba(14,62,125,.10);
  --sh-hover:0 18px 40px rgba(14,62,125,.16);
  --sp:8px;
  --fs-body:1rem;
  --lh-body:1.85;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms;
  --bs-primary:#1E6FD9;
  --bs-primary-rgb:30,111,217;
  --bs-body-color:#43506B;
  --bs-body-bg:#F6F8FC;
  --bs-border-color:#E4E9F2;
  --bs-border-radius:12px;
  --bs-link-color:#1E6FD9;
  --bs-link-hover-color:#0E3E7D;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:var(--fs-body);
  line-height:var(--lh-body);
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.22}
h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25}
h3{font-size:1.188rem;line-height:1.4;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--c-brand-500);text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--c-brand-700)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums}
.mk-wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.mk-wrap{max-width:1320px}}
.mk-section{padding:96px 0}
.mk-section--tight{padding:64px 0}
.mk-section--white{background:var(--c-surface)}
.mk-sec-head{max-width:720px;margin-bottom:40px}
.mk-sec-head p{margin-top:12px;color:var(--c-text)}
.mk-eyebrow{display:inline-block;font-size:.8125rem;font-weight:600;letter-spacing:.08em;color:var(--c-brand-600);background:var(--c-brand-050);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px}

/* 顶部导航 */
.mk-header{position:fixed;top:0;left:0;right:0;z-index:1040;height:76px;display:flex;align-items:center;
  background:rgba(255,255,255,.62);backdrop-filter:blur(14px) saturate(160%);-webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(11,18,32,.06);transition:height var(--t) var(--ease),background var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.mk-header.is-stuck{height:64px;background:rgba(255,255,255,.96);box-shadow:0 8px 24px rgba(11,18,32,.08)}
.mk-header__inner{display:flex;align-items:center;gap:24px;width:100%}
.mk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink)}
.mk-logo:hover{color:var(--c-ink)}
.mk-logo__mark{width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-brand-500),var(--c-brand-700));box-shadow:0 6px 16px rgba(30,111,217,.28);flex:0 0 auto}
.mk-logo__text{display:block;font-size:1.0625rem;font-weight:700;letter-spacing:-.01em;line-height:1.1}
.mk-logo__sub{display:block;font-size:.6875rem;color:var(--c-muted);letter-spacing:.18em;line-height:1.2;margin-top:2px}
.mk-nav{flex:1 1 auto;display:flex;justify-content:center}
.mk-menu{display:flex;align-items:center;gap:28px}
.mk-menu__link{position:relative;font-size:.875rem;font-weight:500;color:var(--c-text);white-space:nowrap;padding:6px 0}
.mk-menu__link::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--c-accent-500);
  border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform var(--t) var(--ease)}
.mk-menu__link:hover{color:var(--c-brand-600)}
.mk-menu__link:hover::after{transform:scaleX(1)}
.mk-menu__link.is-active{color:var(--c-ink);font-weight:600}
.mk-menu__link.is-active::after{transform:scaleX(1)}
.mk-header__actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.mk-icon-btn{width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);background:#fff;color:var(--c-text);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--t) var(--ease)}
.mk-icon-btn:hover{border-color:var(--c-brand-300);color:var(--c-brand-600);background:var(--c-brand-050)}
.mk-burger{display:none}
.mk-searchbar{display:none;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:0 6px 0 16px;height:44px}
.mk-searchbar.is-open{display:inline-flex}
.mk-searchbar input{border:0;outline:0;height:40px;width:180px;font-size:.875rem;color:var(--c-ink);background:transparent}
.mk-searchbar button{border:0;background:var(--c-brand-500);color:#fff;border-radius:var(--r-pill);height:32px;padding:0 14px;font-size:.8125rem;cursor:pointer}
.mk-searchbar button:hover{background:var(--c-brand-600)}
.mk-drawer{position:fixed;top:0;right:0;bottom:0;width:min(88vw,340px);background:#fff;z-index:1060;
  transform:translateX(102%);transition:transform 260ms var(--ease);display:flex;flex-direction:column;box-shadow:-12px 0 40px rgba(11,18,32,.16)}
.mk-drawer.is-open{transform:translateX(0)}
.mk-drawer__head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--c-line)}
.mk-drawer__body{padding:20px;overflow-y:auto;flex:1 1 auto}
.mk-drawer__group{margin-bottom:24px}
.mk-drawer__title{font-size:.8125rem;color:var(--c-muted);font-weight:600;margin-bottom:10px;letter-spacing:.04em}
.mk-drawer__link{display:block;padding:12px 4px;font-size:.9375rem;color:var(--c-ink);border-bottom:1px solid var(--c-line)}
.mk-drawer__link:hover{color:var(--c-brand-600)}
.mk-drawer__foot{padding:16px 20px;border-top:1px solid var(--c-line)}
.mk-backdrop{position:fixed;inset:0;background:rgba(11,18,32,.42);z-index:1050;opacity:0;visibility:hidden;transition:all var(--t) var(--ease)}
.mk-backdrop.is-open{opacity:1;visibility:visible}

/* 按钮 */
.mk-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;cursor:pointer;
  font-size:.9375rem;font-weight:600;height:52px;padding:0 26px;border-radius:var(--r-pill);transition:all var(--t) var(--ease);text-align:center}
.mk-btn--primary{background:var(--c-accent-500);color:#fff;box-shadow:0 6px 18px rgba(255,106,31,.28)}
.mk-btn--primary:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.mk-btn--primary:active{transform:translateY(0)}
.mk-btn--ghost{background:#fff;color:var(--c-brand-600);border-color:var(--c-line);border-radius:var(--r-btn);height:52px}
.mk-btn--ghost:hover{border-color:var(--c-brand-500);background:var(--c-brand-050);color:var(--c-brand-700)}
.mk-btn--sm{height:42px;padding:0 20px;font-size:.875rem}
.mk-btn[disabled],.mk-btn.is-disabled{background:var(--c-line);color:var(--c-muted);cursor:not-allowed;box-shadow:none;transform:none}
.mk-textlink{display:inline-flex;align-items:center;gap:6px;font-size:.9375rem;font-weight:600;color:var(--c-brand-500);cursor:pointer;background:none;border:0;padding:0}
.mk-textlink svg{transition:transform var(--t) var(--ease)}
.mk-textlink:hover svg{transform:translateX(3px)}
.mk-textlink--back:hover svg{transform:translateX(-3px)}

/* 面包屑 */
.mk-crumb{font-size:.8125rem;color:var(--c-muted);margin-bottom:18px;overflow-x:auto;white-space:nowrap;scrollbar-width:none}
.mk-crumb::-webkit-scrollbar{display:none}
.mk-crumb ol{display:flex;align-items:center;gap:8px}
.mk-crumb li{display:flex;align-items:center;gap:8px}
.mk-crumb li::after{content:"/";color:var(--c-brand-300)}
.mk-crumb li:last-child::after{display:none}
.mk-crumb a{color:var(--c-muted)}
.mk-crumb a:hover{color:var(--c-brand-600)}
.mk-crumb [aria-current="page"]{color:var(--c-ink);font-weight:600}

/* 分类 Hero */
.mk-hero--cat{position:relative;padding:132px 0 64px;min-height:340px;display:flex;align-items:center;
  background-image:linear-gradient(100deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.88) 52%,rgba(238,244,253,.82) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;border-bottom:1px solid var(--c-line);overflow:hidden}
.mk-hero--cat__inner{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:32px;align-items:center;width:100%}
.mk-hero--cat h1{margin-bottom:14px}
.mk-hero--cat .mk-hero__lead{font-size:1.0625rem;color:var(--c-text);max-width:38em;margin-bottom:22px}
.mk-hero__art{display:flex;justify-content:center;align-items:center;color:var(--c-brand-500);opacity:.9}
.mk-hero__badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.mk-badge{display:inline-flex;align-items:center;gap:6px;font-size:.75rem;font-weight:600;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-brand-050);color:var(--c-brand-600);line-height:1.5}
.mk-badge--accent{background:var(--c-accent-050);color:var(--c-accent-600)}
.mk-badge--line{background:#fff;border:1px solid var(--c-line);color:var(--c-text)}

/* 交错图文 */
.mk-stagger{display:flex;flex-direction:column;gap:64px}
.mk-stagger__row{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.mk-stagger__row.is-flip{grid-template-columns:7fr 5fr}
.mk-stagger__row.is-flip .mk-stagger__media{order:2}
.mk-stagger__row.is-flip .mk-stagger__body{order:1}
.mk-media{position:relative;overflow:hidden;border-radius:var(--r-media);background:var(--c-brand-050);aspect-ratio:5/4;box-shadow:var(--sh-1)}
.mk-media img{width:100%;height:100%;object-fit:cover}
.mk-stagger__body h3{margin-bottom:12px}
.mk-stagger__body p{color:var(--c-text)}
.mk-points{margin-top:14px}
.mk-points li{position:relative;padding-left:18px;font-size:.9375rem;color:var(--c-ink);font-weight:500}
.mk-points li::marker{color:var(--c-accent-500)}
.mk-points li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-accent-500)}
.mk-points--multi li{margin-bottom:8px}

/* 数据带 */
.mk-databar{background:var(--c-brand-050);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:48px 0}
.mk-databar__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.mk-databar__item{padding:8px 24px;text-align:center;border-right:1px solid rgba(30,111,217,.16)}
.mk-databar__item:last-child{border-right:0}
.mk-databar__num{font-size:2rem;font-weight:700;color:var(--c-brand-700);line-height:1.2;font-variant-numeric:tabular-nums}
.mk-databar__label{font-size:.8125rem;color:var(--c-muted);margin-top:6px}

/* 卡片 */
.mk-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:24px;transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);height:100%}
.mk-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-300)}
.mk-card__icon{width:44px;height:44px;border-radius:12px;background:var(--c-brand-050);color:var(--c-brand-600);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px}
.mk-card h3{margin-bottom:10px}
.mk-card p{font-size:.9375rem}

/* FAQ */
.mk-faq .accordion-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;box-shadow:var(--sh-1);margin-bottom:12px;overflow:hidden}
.mk-faq .accordion-button{position:relative;background:#fff;color:var(--c-ink);font-size:1.0625rem;font-weight:600;
  padding:20px 56px 20px 24px;border:0;box-shadow:none;line-height:1.6;width:100%;text-align:left}
.mk-faq .accordion-button:not(.collapsed){color:var(--c-brand-600);box-shadow:inset 3px 0 0 var(--c-accent-500)}
.mk-faq .accordion-button:hover{background:var(--c-brand-050)}
.mk-faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-brand-500);outline-offset:-2px}
.mk-faq .accordion-button::after{display:none!important}
.mk-faq .accordion-button .mk-faq__sign{position:absolute;right:22px;top:50%;transform:translateY(-50%);width:22px;height:22px;color:var(--c-brand-500)}
.mk-faq .accordion-button .mk-faq__sign::before,
.mk-faq .accordion-button .mk-faq__sign::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.mk-faq .accordion-button .mk-faq__sign::before{left:3px;right:3px;top:10px;height:2px}
.mk-faq .accordion-button .mk-faq__sign::after{top:3px;bottom:3px;left:10px;width:2px;transition:transform var(--t) var(--ease)}
.mk-faq .accordion-button:not(.collapsed) .mk-faq__sign::after{transform:scaleY(0)}
.mk-faq .accordion-body{padding:0 24px 22px;color:var(--c-text);max-width:68em;font-size:1rem}

/* 浅色下载 CTA */
.mk-cta-band{background:var(--c-brand-050);border:1px solid var(--c-line);border-radius:var(--r-media);padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.mk-cta-band h2{margin-bottom:8px}
.mk-cta-band p{color:var(--c-text);margin:0}
.mk-cta-band__meta{font-size:.8125rem;color:var(--c-muted);margin-top:10px;font-variant-numeric:tabular-nums}

/* 资讯列表 */
.mk-news{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mk-news__card{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease)}
.mk-news__card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-300)}
.mk-news__media{aspect-ratio:4/3;background:var(--c-brand-050);overflow:hidden}
.mk-news__media img{width:100%;height:100%;object-fit:cover}
.mk-news__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.mk-news__body h3{font-size:1.0625rem;line-height:1.45}
.mk-news__body h3 a{color:var(--c-ink)}
.mk-news__body h3 a:hover{color:var(--c-brand-600)}
.mk-news__sum{font-size:.875rem;color:var(--c-text);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mk-news__meta{margin-top:auto;font-size:.8125rem;color:var(--c-muted);display:flex;align-items:center;gap:8px}

/* 页脚 */
.mk-footer{background:linear-gradient(8deg,var(--c-brand-900),var(--c-brand-700));color:#C7D3E6;padding:72px 0 0;margin-top:8px}
.mk-footer a{color:#C7D3E6}
.mk-footer a:hover{color:#fff}
.mk-footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.mk-footer__brand .mk-logo{color:#fff}
.mk-footer__brand .mk-logo__text{color:#fff}
.mk-footer__brand .mk-logo__sub{color:rgba(199,211,230,.72)}
.mk-footer__brand p{font-size:.875rem;line-height:1.8;margin:16px 0;color:rgba(199,211,230,.82)}
.mk-footer h3{color:#fff;font-size:1rem;margin-bottom:16px}
.mk-footer ul li{margin-bottom:10px}
.mk-footer ul a{font-size:.875rem;display:inline-block;transition:transform var(--t) var(--ease),color var(--t) var(--ease)}
.mk-footer ul a:hover{transform:translateX(2px)}
.mk-footer__bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.8125rem;color:rgba(199,211,226,.72)}

/* 滚动入场 */
.mk-reveal{opacity:0;transform:translateY(12px);transition:opacity 240ms var(--ease),transform 240ms var(--ease)}
.mk-reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .mk-reveal{opacity:1;transform:none}
}

/* Bootstrap 覆盖 */
.btn:focus,.btn:active,.form-control:focus{box-shadow:none!important}
.accordion-button:focus{box-shadow:none!important}
.form-control{border-radius:var(--r-btn);border:1px solid var(--c-line);height:48px}
.form-control:focus{border-color:var(--c-brand-500);box-shadow:0 0 0 3px rgba(30,111,217,.15)!important}

@media (max-width:1199px){
  .mk-section{padding:80px 0}
}
@media (max-width:991px){
  .mk-menu{gap:18px}
  .mk-menu__link{font-size:.8125rem}
  .mk-hero--cat__inner{grid-template-columns:1fr}
  .mk-hero__art{display:none}
  .mk-stagger__row,.mk-stagger__row.is-flip{grid-template-columns:1fr;gap:24px}
  .mk-stagger__row.is-flip .mk-stagger__media{order:1}
  .mk-stagger__row.is-flip .mk-stagger__body{order:2}
  .mk-stagger{gap:48px}
  .mk-news{grid-template-columns:repeat(2,1fr)}
  .mk-footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .mk-wrap{padding:0 16px}
  .mk-section{padding:64px 0}
  .mk-section--tight{padding:48px 0}
  .mk-nav{display:none}
  .mk-burger{display:inline-flex}
  .mk-searchbar{display:none}
  .mk-hero--cat{padding:112px 0 48px;min-height:auto}
  .mk-databar__grid{grid-template-columns:1fr;gap:0}
  .mk-databar__item{border-right:0;border-bottom:1px solid rgba(30,111,217,.16);padding:16px 0}
  .mk-databar__item:last-child{border-bottom:0}
  .mk-news{grid-template-columns:1fr}
  .mk-cta-band{padding:28px;flex-direction:column;align-items:flex-start}
  .mk-cta-band .mk-btn{width:100%}
  .mk-footer{padding-top:56px}
  .mk-footer__bottom{flex-direction:column}
}
@media (max-width:575px){
  .mk-header{height:64px}
  .mk-header__actions .mk-btn--sm{display:none}
  .mk-points li{font-size:.9375rem}
  .mk-databar__num{font-size:1.625rem}
}

/* roulang page: category2 */
/* ============ 1. 设计变量 ============ */
:root{
  --c-brand-500:#1E6FD9;
  --c-brand-600:#14549E;
  --c-brand-700:#0E3E7D;
  --c-brand-900:#08203F;
  --c-brand-300:#7FB0EE;
  --c-brand-050:#EEF4FD;
  --c-accent-500:#FF6A1F;
  --c-accent-600:#E85A12;
  --c-accent-050:#FFF1E8;
  --c-ink:#0B1220;
  --c-text:#43506B;
  --c-muted:#7A879C;
  --c-line:#E4E9F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-ok:#16A34A;
  --c-warn:#F59E0B;
  --c-err:#DC2626;
  --r-card:16px;
  --r-lg:20px;
  --r-md:12px;
  --r-sm:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,18,32,.04),0 6px 18px rgba(11,18,32,.06);
  --sh-2:0 12px 32px rgba(14,62,125,.10);
  --sh-hover:0 18px 40px rgba(14,62,125,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms;
  --bs-primary:#1E6FD9;
  --bs-primary-rgb:30,111,217;
  --bs-body-color:#43506B;
  --bs-border-color:#E4E9F2;
  --bs-border-radius:12px;
  --bs-link-color:#1E6FD9;
  --bs-link-hover-color:#14549E;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
}
/* ============ 2. reset 与基础排版 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-brand-500);text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--c-brand-600)}
button{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-0.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:4px}
.mk-num{font-variant-numeric:tabular-nums}
/* Bootstrap 覆盖 */
.btn{--bs-btn-border-radius:12px;--bs-btn-focus-box-shadow:0 0 0 3px rgba(30,111,217,.15)}
.card{--bs-card-border-radius:16px;--bs-card-border-color:var(--c-line)}
.collapse{transition:none}
/* ============ 3. 容器与栅格 ============ */
.mk-wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.mk-wrap{max-width:1320px}}
.mk-grid{display:grid;gap:24px}
/* ============ 4. 顶部导航 ============ */
.mk-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  height:76px;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(11,18,32,.06);
  transition:height var(--t) var(--ease),background var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.mk-header.is-stuck{height:64px;background:rgba(255,255,255,.96);box-shadow:0 8px 24px rgba(11,18,32,.08)}
.mk-header__inner{display:flex;align-items:center;gap:24px;height:100%}
.mk-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-ink)}
.mk-logo:hover{color:var(--c-ink)}
.mk-logo__mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-brand-500),var(--c-brand-700));
  box-shadow:0 6px 16px rgba(20,84,158,.28);
}
.mk-logo__text{display:block;font-size:1.0625rem;font-weight:700;line-height:1.1;letter-spacing:-0.01em}
.mk-logo__sub{display:block;font-size:.6875rem;color:var(--c-muted);line-height:1.2;letter-spacing:.08em}
.mk-nav{margin-left:auto}
.mk-menu{display:flex;align-items:center;gap:28px}
.mk-menu__link{
  position:relative;display:inline-block;
  font-size:.875rem;font-weight:500;color:var(--c-text);white-space:nowrap;
  padding:6px 0;transition:color var(--t) var(--ease);
}
.mk-menu__link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--c-accent-500);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.mk-menu__link:hover{color:var(--c-brand-600)}
.mk-menu__link:hover::after{transform:scaleX(1)}
.mk-menu__link.is-active{color:var(--c-brand-700);font-weight:600}
.mk-menu__link.is-active::after{transform:scaleX(1)}
.mk-header__actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.mk-iconbtn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);background:#fff;
  display:grid;place-items:center;color:var(--c-text);cursor:pointer;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),background var(--t) var(--ease);
}
.mk-iconbtn:hover{border-color:var(--c-brand-300);color:var(--c-brand-600);background:var(--c-brand-050)}
.mk-burger{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;place-items:center;cursor:pointer;
}
.mk-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);position:relative}
.mk-burger span::before,.mk-burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-ink);
}
.mk-burger span::before{top:-6px}
.mk-burger span::after{top:6px}
/* 移动抽屉 */
.mk-drawer{
  position:fixed;inset:0 0 0 auto;width:min(86vw,340px);z-index:1050;
  background:#fff;box-shadow:-16px 0 44px rgba(11,18,32,.18);
  transform:translateX(102%);transition:transform var(--t) var(--ease);
  display:flex;flex-direction:column;padding:20px 20px 0;
}
.mk-drawer.is-open{transform:translateX(0)}
.mk-drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.mk-drawer__group{font-size:.8125rem;color:var(--c-muted);margin:14px 0 6px;letter-spacing:.06em}
.mk-drawer__link{
  display:block;padding:12px 2px;font-size:.9375rem;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.mk-drawer__link:hover,.mk-drawer__link.is-active{color:var(--c-brand-600);font-weight:600}
.mk-drawer__foot{margin-top:auto;padding:16px 0 20px;position:sticky;bottom:0;background:#fff}
.mk-backdrop{
  position:fixed;inset:0;background:rgba(8,32,63,.42);z-index:1040;opacity:0;pointer-events:none;
  transition:opacity var(--t) var(--ease);
}
.mk-backdrop.is-open{opacity:1;pointer-events:auto}
body.mk-lock{overflow:hidden}
/* ============ 5. 按钮体系 ============ */
.mk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border:1px solid transparent;border-radius:var(--r-pill);
  font-size:.9375rem;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),
             border-color var(--t) var(--ease),color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.mk-btn--primary{background:var(--c-accent-500);color:#fff;box-shadow:0 8px 20px rgba(232,90,18,.22)}
.mk-btn--primary:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.mk-btn--primary:active{transform:translateY(0)}
.mk-btn--ghost{background:#fff;color:var(--c-brand-600);border-color:var(--c-line);border-radius:var(--r-md)}
.mk-btn--ghost:hover{border-color:var(--c-brand-500);background:var(--c-brand-050);color:var(--c-brand-700)}
.mk-btn--ghost:active{transform:translateY(1px)}
.mk-btn--sm{min-height:40px;padding:0 18px;font-size:.875rem}
.mk-btn--block{width:100%}
.mk-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.875rem;font-weight:600;color:var(--c-brand-500);
}
.mk-link svg{transition:transform var(--t) var(--ease)}
.mk-link:hover{color:var(--c-brand-700)}
.mk-link:hover svg{transform:translateX(3px)}
.mk-link--back:hover svg{transform:translateX(-3px)}
/* ============ 6. 徽章 / 标签 ============ */
.mk-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:.75rem;font-weight:600;line-height:1.5;
  background:var(--c-brand-050);color:var(--c-brand-600);
}
.mk-badge--accent{background:var(--c-accent-050);color:var(--c-accent-600)}
.mk-badge--ok{background:rgba(22,163,74,.1);color:var(--c-ok)}
/* ============ 7. Hero ============ */
.mk-hero{position:relative;overflow:hidden;padding:calc(76px + 52px) 0 64px}
.mk-hero__bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.16;
}
.mk-hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.92) 0%,rgba(246,248,252,.96) 70%,var(--c-bg) 100%);
}
.mk-hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:center;min-height:300px}
.mk-crumb{font-size:.8125rem;color:var(--c-muted);margin-bottom:16px}
.mk-crumb ol{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.mk-crumb ol::-webkit-scrollbar{display:none}
.mk-crumb li{white-space:nowrap;display:flex;align-items:center;gap:8px}
.mk-crumb li::after{content:"/";color:var(--c-brand-300)}
.mk-crumb li:last-child::after{display:none}
.mk-crumb a{color:var(--c-muted)}
.mk-crumb a:hover{color:var(--c-brand-600)}
.mk-crumb [aria-current]{color:var(--c-ink);font-weight:600}
.mk-hero h1{
  font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.25;letter-spacing:-0.02em;margin-bottom:14px;
}
.mk-hero__lead{font-size:1.0625rem;color:var(--c-text);max-width:34em;margin-bottom:24px}
.mk-hero__art{display:grid;place-items:center}
.mk-hero__art svg{width:100%;max-width:280px;height:auto}
/* ============ 8. 板块 ============ */
.mk-section{padding:88px 0}
.mk-section--alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.mk-sec-head{max-width:44em;margin-bottom:40px}
.mk-sec-head h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25;margin-bottom:12px}
.mk-sec-head p{color:var(--c-text);margin:0}
.mk-sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
/* ============ 9. 5/7 分栏主体 ============ */
.mk-split{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:start}
.mk-flow{display:grid;gap:44px}
.mk-flow__item{padding-bottom:36px;border-bottom:1px dashed var(--c-line)}
.mk-flow__item:last-child{border-bottom:0;padding-bottom:0}
.mk-flow__item h3{font-size:1.1875rem;line-height:1.45;margin-bottom:14px;position:relative;padding-left:16px}
.mk-flow__item h3::before{
  content:"";position:absolute;left:0;top:.42em;width:4px;height:1em;border-radius:2px;
  background:var(--c-brand-500);
}
.mk-flow__item p{max-width:38em}
.mk-flow__list{margin:14px 0 20px;display:grid;gap:8px}
.mk-flow__list li{position:relative;padding-left:20px;font-size:.9375rem}
.mk-flow__list li::before{
  content:"";position:absolute;left:2px;top:.78em;width:7px;height:7px;border-radius:50%;
  background:var(--c-accent-500);
}
.mk-ratio{border-radius:var(--r-sm);overflow:hidden;background:var(--c-brand-050);position:relative}
.mk-ratio img{width:100%;height:100%;object-fit:cover}
.mk-ratio--16x9{aspect-ratio:16/9}
.mk-ratio--4x3{aspect-ratio:4/3}
/* 右侧 sticky 要点卡 */
.mk-side{position:sticky;top:96px;display:grid;gap:20px}
.mk-sidecard{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:28px;
}
.mk-sidecard h3{font-size:1.125rem;line-height:1.4;margin-bottom:6px}
.mk-sidecard__hint{font-size:.8125rem;color:var(--c-muted);margin-bottom:18px}
.mk-kv{display:grid}
.mk-kv__row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px dashed var(--c-line);
}
.mk-kv__row:last-child{border-bottom:0}
.mk-kv dt{font-size:.8125rem;color:var(--c-muted);flex:0 0 auto}
.mk-kv dd{margin:0;font-size:.9375rem;font-weight:600;color:var(--c-ink);text-align:right;word-break:break-word}
.mk-sidecard__foot{margin-top:20px}
.mk-sidecard--tint{background:var(--c-brand-050);border-color:#D7E5FA;box-shadow:none}
.mk-sidecard--tint h3{font-size:1rem}
.mk-sidecard--tint p{font-size:.875rem;margin:0}
/* ============ 10. 提醒列表 ============ */
.mk-alertlist{display:grid;border-top:1px solid var(--c-line)}
.mk-alertlist__item{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:18px;align-items:start;
  padding:24px 0;border-bottom:1px solid var(--c-line);transition:background var(--t) var(--ease);
}
.mk-alertlist__item:hover{background:var(--c-brand-050)}
.mk-alertlist__icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--c-accent-050);color:var(--c-accent-600);
}
.mk-alertlist__item h3{font-size:1.0625rem;line-height:1.45;margin-bottom:6px}
.mk-alertlist__item p{margin:0;font-size:.9375rem;max-width:52em}
/* ============ 11. FAQ ============ */
.mk-faq{display:grid;gap:12px;max-width:960px}
.mk-faq__item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-sm);
  box-shadow:var(--sh-1);overflow:hidden;transition:border-color var(--t) var(--ease);
}
.mk-faq__item:hover{border-color:var(--c-brand-300)}
.mk-faq__q{margin:0}
.mk-faq__btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:1rem;font-weight:600;color:var(--c-ink);position:relative;
  transition:color var(--t) var(--ease);
}
.mk-faq__btn::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;
  background:var(--c-accent-500);transform:scaleY(0);transition:transform var(--t) var(--ease);
}
.mk-faq__btn[aria-expanded="true"]{color:var(--c-brand-600)}
.mk-faq__btn[aria-expanded="true"]::before{transform:scaleY(1)}
.mk-faq__icon{flex:0 0 20px;color:var(--c-brand-500)}
.mk-faq__v{transform-origin:center;transition:transform var(--t) var(--ease)}
.mk-faq__btn[aria-expanded="true"] .mk-faq__v{transform:scaleY(0)}
.mk-faq__a{padding:0 24px 22px;max-width:68em}
.mk-faq__a p{margin:0;font-size:1rem;line-height:1.85;color:var(--c-text)}
/* ============ 12. 浅色下载 CTA ============ */
.mk-cta{
  background:linear-gradient(135deg,var(--c-brand-050),#F9FBFE 60%,var(--c-accent-050));
  border:1px solid #DCE8FA;border-radius:var(--r-lg);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.mk-cta h2{font-size:clamp(1.25rem,2vw,1.625rem);line-height:1.3;margin-bottom:10px}
.mk-cta p{margin:0;font-size:.9375rem;max-width:46em}
.mk-cta__actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap}
/* ============ 13. 页脚 ============ */
.mk-footer{
  background:linear-gradient(8deg,var(--c-brand-900),var(--c-brand-700));
  color:#C7D3E6;padding:72px 0 24px;margin-top:0;
}
.mk-footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.mk-footer h3{color:#fff;font-size:.9375rem;font-weight:600;margin-bottom:16px}
.mk-footer p{font-size:.875rem;line-height:1.85;color:#A9B9D2;max-width:30em}
.mk-footer ul{display:grid;gap:10px}
.mk-footer li a{font-size:.875rem;color:#C7D3E6;display:inline-block;transition:color var(--t) var(--ease),transform var(--t) var(--ease)}
.mk-footer li a:hover{color:#fff;transform:translateX(2px)}
.mk-footer .mk-logo__text,.mk-footer .mk-logo__sub{color:#fff}
.mk-footer .mk-logo__sub{color:#A9B9D2}
.mk-footer__brand .mk-logo{margin-bottom:16px}
.mk-footer__brand > a[href^="https"]{font-size:.8125rem;color:#8FA6C6;text-decoration:underline;word-break:break-all}
.mk-footer__bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8125rem;color:#93A7C4;
}
/* ============ 14. 状态与动效 ============ */
.mk-reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.mk-reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .mk-reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
/* ============ 15. 响应式 ============ */
@media (max-width:1199px){
  .mk-hero__inner{grid-template-columns:minmax(0,1fr) 240px;gap:32px}
}
@media (max-width:991px){
  .mk-nav{display:none}
  .mk-burger{display:grid}
  .mk-header__actions .mk-btn--sm{display:none}
  .mk-hero__inner{grid-template-columns:1fr;gap:28px}
  .mk-hero__art{order:2;justify-items:start}
  .mk-hero__art svg{max-width:200px}
  .mk-split{grid-template-columns:1fr;gap:32px}
  .mk-side{position:static}
  .mk-section{padding:64px 0}
  .mk-footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .mk-wrap{padding:0 16px}
  .mk-section{padding:48px 0}
  .mk-hero{padding:calc(76px + 32px) 0 48px}
  .mk-sec-head{margin-bottom:28px}
  .mk-sec-head--row{flex-direction:column;align-items:flex-start;gap:12px}
  .mk-flow{gap:32px}
  .mk-sidecard{padding:22px}
  .mk-cta{flex-direction:column;align-items:flex-start;padding:28px;gap:20px}
  .mk-cta__actions{width:100%}
  .mk-cta__actions .mk-btn{width:100%}
  .mk-faq__btn{padding:18px 18px;font-size:.9375rem}
  .mk-faq__a{padding:0 18px 18px}
  .mk-alertlist__item{grid-template-columns:40px minmax(0,1fr);gap:14px;padding:20px 0}
  .mk-footer{padding:56px 0 20px}
  .mk-footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .mk-footer__brand{grid-column:1/-1}
  .mk-footer__bottom{flex-direction:column;gap:8px;margin-top:32px}
}
@media (max-width:575px){
  .mk-menu{gap:0}
  .mk-hero h1{font-size:1.625rem}
  .mk-hero__lead{font-size:1rem}
  .mk-btn{width:100%;padding:0 20px}
  .mk-btn--sm{width:auto}
  .mk-cta__actions{flex-direction:column}
  .mk-kv__row{flex-direction:column;align-items:flex-start;gap:4px}
  .mk-kv dd{text-align:left}
}

/* roulang page: category4 */
/* ============ 1. 设计变量 ============ */
:root{
  --c-brand-500:#1E6FD9;
  --c-brand-600:#14549E;
  --c-brand-700:#0E3E7D;
  --c-brand-900:#08203F;
  --c-brand-300:#7FB0EE;
  --c-brand-050:#EEF4FD;
  --c-accent-500:#FF6A1F;
  --c-accent-600:#E85A12;
  --c-accent-050:#FFF1E8;
  --c-ink:#0B1220;
  --c-text:#43506B;
  --c-muted:#7A879C;
  --c-line:#E4E9F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-ok:#16A34A;
  --c-warn:#F59E0B;
  --c-err:#DC2626;

  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(11,18,32,.04),0 6px 18px rgba(11,18,32,.06);
  --sh-2:0 12px 32px rgba(14,62,125,.10);
  --sh-hover:0 18px 40px rgba(14,62,125,.16);

  --ease:cubic-bezier(.2,.7,.3,1);
  --wrap:1200px;

  --bs-primary:#1E6FD9;
  --bs-primary-rgb:30,111,217;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-body-color:#43506B;
  --bs-body-bg:#F6F8FC;
  --bs-border-radius:12px;
  --bs-link-color:#1E6FD9;
  --bs-link-hover-color:#14549E;
}

/* ============ 2. reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:1rem;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em;}
p{margin:0;max-width:38em;}
a{color:var(--c-brand-500);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--c-brand-600);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}
.mk-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 3. 容器 ============ */
.mk-wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){ .mk-wrap{max-width:1320px;} }

/* ============ 4. 顶部导航 ============ */
.mk-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  height:76px;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(11,18,32,.06);
  transition:height .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.mk-header.is-stuck{
  height:64px;
  background:rgba(255,255,255,.96);
  box-shadow:0 8px 24px rgba(11,18,32,.08);
}
.mk-header__inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:100%;
}
.mk-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--c-ink);
}
.mk-logo:hover{color:var(--c-ink);}
.mk-logo__mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--c-brand-500),var(--c-brand-700));
  box-shadow:0 6px 16px rgba(30,111,217,.28);
  flex:0 0 auto;
}
.mk-logo__text{
  display:block;
  font-size:1.0625rem;
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.01em;
}
.mk-logo__sub{
  display:block;
  font-size:.6875rem;
  font-weight:500;
  color:var(--c-muted);
  letter-spacing:.16em;
  line-height:1.4;
}
.mk-nav{flex:1 1 auto;display:flex;justify-content:center;}
.mk-menu{
  display:flex;
  align-items:center;
  gap:28px;
}
.mk-menu__link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:.875rem;
  font-weight:500;
  color:var(--c-text);
  white-space:nowrap;
  transition:color .22s var(--ease);
}
.mk-menu__link:hover{color:var(--c-brand-600);}
.mk-menu__link.is-active{
  color:var(--c-brand-700);
  font-weight:600;
}
.mk-menu__link.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;
  bottom:-6px;
  height:2px;
  border-radius:2px;
  background:var(--c-accent-500);
}
.mk-header__side{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.mk-icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:50%;
  color:var(--c-text);
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.mk-icon-btn:hover{background:var(--c-brand-050);color:var(--c-brand-600);border-color:var(--c-line);}
.mk-burger{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--c-line);
  background:#fff;
  padding:0 11px;
  flex-direction:column;
  justify-content:center;
  gap:5px;
}
.mk-burger span{display:block;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.mk-burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.mk-burger.is-open span:nth-child(2){opacity:0;}
.mk-burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mk-searchbar{
  display:none;
  border-top:1px solid rgba(11,18,32,.06);
  background:rgba(255,255,255,.96);
}
.mk-searchbar.is-open{display:block;}
.mk-searchbar__inner{display:flex;gap:10px;padding:12px 0;}
.mk-searchbar input{
  flex:1 1 auto;
  height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  padding:0 14px;
  font-size:.9375rem;
  color:var(--c-ink);
  background:#fff;
}
.mk-searchbar input::placeholder{color:var(--c-muted);}
.mk-searchbar input:focus{
  border-color:var(--c-brand-500);
  box-shadow:0 0 0 3px rgba(30,111,217,.15);
  outline:none;
}

/* 移动端抽屉 */
.mk-drawer{
  position:fixed;
  inset:0;
  z-index:1040;
  background:rgba(11,18,32,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.mk-drawer.is-open{opacity:1;visibility:visible;}
.mk-drawer__panel{
  position:absolute;
  top:0;right:0;
  width:min(340px,86vw);
  height:100%;
  background:#fff;
  padding:22px 20px 108px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .24s var(--ease);
  display:flex;
  flex-direction:column;
}
.mk-drawer.is-open .mk-drawer__panel{transform:translateX(0);}
.mk-drawer__group{
  font-size:.8125rem;
  font-weight:600;
  color:var(--c-muted);
  letter-spacing:.06em;
  margin:20px 0 8px;
  max-width:none;
}
.mk-drawer__list li + li{margin-top:2px;}
.mk-drawer__list a{
  display:block;
  padding:11px 12px;
  border-radius:var(--r-sm);
  font-size:.9375rem;
  color:var(--c-ink);
}
.mk-drawer__list a:hover,
.mk-drawer__list a.is-active{background:var(--c-brand-050);color:var(--c-brand-600);}
.mk-drawer__cta{
  position:absolute;
  left:20px;right:20px;bottom:20px;
}
.mk-drawer__close{
  align-self:flex-end;
  width:40px;height:40px;
  border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--c-line);
}

/* ============ 5. 按钮 ============ */
.mk-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:52px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:.9375rem;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  text-align:center;
}
.mk-btn--primary{
  background:var(--c-accent-500);
  color:#fff;
  box-shadow:0 8px 20px rgba(255,106,31,.24);
}
.mk-btn--primary:hover{
  background:var(--c-accent-600);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
}
.mk-btn--primary:active{transform:translateY(0);}
.mk-btn--ghost{
  background:#fff;
  color:var(--c-brand-600);
  border-color:var(--c-line);
  border-radius:var(--r-sm);
}
.mk-btn--ghost:hover{
  background:var(--c-brand-050);
  border-color:var(--c-brand-500);
  color:var(--c-brand-700);
  transform:translateY(-2px);
}
.mk-btn--sm{min-height:44px;padding:0 20px;font-size:.875rem;}
.mk-btn--block{width:100%;}
.mk-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.9375rem;
  font-weight:600;
  color:var(--c-brand-500);
  background:none;
}
.mk-link svg{transition:transform .22s var(--ease);}
.mk-link:hover svg{transform:translateX(3px);}
.mk-link--back:hover svg{transform:translateX(-3px);}
.mk-link:focus-visible{text-decoration:underline;}

/* ============ 6. 分类页 Hero ============ */
.mk-chero{
  position:relative;
  margin-top:0;
  padding:132px 0 64px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.94) 0%,rgba(255,255,255,.86) 52%,rgba(246,248,252,.96) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.mk-chero::after{
  content:"";
  position:absolute;
  right:-120px;top:-80px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(30,111,217,.14),rgba(30,111,217,0) 68%);
  pointer-events:none;
}
.mk-chero__grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:40px;
  align-items:center;
  min-height:300px;
}
.mk-crumb{
  font-size:.8125rem;
  color:var(--c-muted);
  margin-bottom:16px;
}
.mk-crumb ol{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow-x:auto;}
.mk-crumb li{display:flex;align-items:center;gap:8px;white-space:nowrap;}
.mk-crumb li + li::before{content:"/";color:var(--c-brand-300);}
.mk-crumb a{color:var(--c-muted);}
.mk-crumb a:hover{color:var(--c-brand-600);}
.mk-crumb [aria-current="page"]{color:var(--c-ink);font-weight:600;}
.mk-chero h1{
  font-size:clamp(1.75rem,3.2vw,2.5rem);
  line-height:1.2;
  letter-spacing:-.02em;
  margin-bottom:14px;
}
.mk-chero__lead{
  font-size:1.0625rem;
  color:var(--c-text);
  margin-bottom:26px;
  max-width:32em;
}
.mk-chero__actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.mk-chero__art{
  display:flex;
  justify-content:center;
  align-items:center;
}
.mk-chero__art svg{width:100%;max-width:320px;height:auto;}

/* ============ 7. 板块 ============ */
.mk-sec{padding:88px 0;}
.mk-sec--tight{padding:64px 0;}
.mk-sec--plain{background:#fff;}
.mk-sec__head{margin-bottom:44px;max-width:46em;}
.mk-sec__head h2{
  font-size:clamp(1.5rem,2.4vw,2.125rem);
  line-height:1.25;
  margin-bottom:12px;
}
.mk-sec__head p{font-size:1rem;color:var(--c-text);}
.mk-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  font-weight:600;
  color:var(--c-brand-600);
  background:var(--c-brand-050);
  padding:5px 12px;
  border-radius:var(--r-pill);
  margin-bottom:14px;
  max-width:none;
}
.mk-eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--c-accent-500);
}

/* ============ 8. 时间轴 ============ */
.mk-timeline{position:relative;padding-left:0;}
.mk-timeline::before{
  content:"";
  position:absolute;
  left:15px;top:10px;bottom:10px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--c-brand-300),var(--c-brand-500),rgba(127,176,238,.25));
}
.mk-tl-item{
  position:relative;
  padding-left:56px;
  margin-bottom:28px;
}
.mk-tl-item:last-child{margin-bottom:0;}
.mk-tl-item::before{
  content:"";
  position:absolute;
  left:8px;top:26px;
  width:16px;height:16px;
  border-radius:50%;
  background:var(--c-accent-500);
  box-shadow:0 0 0 4px var(--c-accent-050),0 0 0 8px rgba(255,255,255,.9);
}
.mk-tl-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:24px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.mk-tl-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-hover);
  border-color:var(--c-brand-300);
}
.mk-tl-card__step{
  display:inline-block;
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--c-accent-600);
  background:var(--c-accent-050);
  border-radius:var(--r-pill);
  padding:3px 10px;
  margin-bottom:12px;
  max-width:none;
}
.mk-tl-card h3{
  font-size:1.1875rem;
  line-height:1.4;
  margin-bottom:10px;
}
.mk-tl-card p{font-size:.9375rem;color:var(--c-text);max-width:46em;}
.mk-tl-card p + p{margin-top:8px;}
.mk-tl-card__media{
  margin-top:16px;
  border-radius:var(--r-sm);
  overflow:hidden;
  border:1px solid var(--c-line);
  aspect-ratio:16/10;
  background:var(--c-brand-050);
}
.mk-tl-card__media img{width:100%;height:100%;object-fit:cover;}

/* ============ 9. 要点条 ============ */
.mk-band{
  background:#fff;
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  padding:44px 0;
}
.mk-band__grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;
}
.mk-band__item{
  padding:4px 26px;
  border-right:1px solid var(--c-line);
}
.mk-band__item:last-child{border-right:0;}
.mk-band__item h3{
  font-size:1.0625rem;
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:8px;
}
.mk-band__item h3 svg{flex:0 0 auto;color:var(--c-brand-500);}
.mk-band__item p{font-size:.9375rem;}

/* ============ 10. FAQ ============ */
.mk-faq{max-width:900px;}
.mk-faq .accordion-item{
  border:1px solid var(--c-line);
  border-radius:14px;
  background:#fff;
  box-shadow:var(--sh-1);
  margin-bottom:12px;
  overflow:hidden;
}
.mk-faq .accordion-button{
  display:flex;
  align-items:center;
  gap:14px;
  width:100%;
  padding:18px 22px;
  font-size:1rem;
  font-weight:600;
  color:var(--c-ink);
  background:#fff;
  box-shadow:none;
  border-radius:0;
  text-align:left;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.mk-faq .accordion-button:not(.collapsed){
  color:var(--c-brand-600);
  background:#fff;
  box-shadow:inset 3px 0 0 var(--c-accent-500);
}
.mk-faq .accordion-button::after{display:none;}
.mk-faq .accordion-button:focus,
.mk-faq .accordion-button:focus-visible{
  outline:2px solid var(--c-brand-500);
  outline-offset:-2px;
  box-shadow:none;
}
.mk-faq__sign{
  position:relative;
  margin-left:auto;
  width:20px;height:20px;
  flex:0 0 20px;
  color:var(--c-brand-500);
}
.mk-faq__sign::before{
  content:"";
  position:absolute;
  left:2px;right:2px;top:9px;
  height:2px;border-radius:2px;
  background:currentColor;
}
.mk-faq__sign::after{
  content:"";
  position:absolute;
  top:2px;bottom:2px;left:9px;
  width:2px;border-radius:2px;
  background:currentColor;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.mk-faq .accordion-button:not(.collapsed) .mk-faq__sign::after{
  transform:rotate(90deg);
  opacity:0;
}
.mk-faq .accordion-body{
  padding:2px 22px 22px;
  font-size:1rem;
  line-height:1.85;
  color:var(--c-text);
  max-width:68em;
}

/* ============ 11. 下载 CTA（浅色） ============ */
.mk-cta{
  background:var(--c-brand-050);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.mk-cta h2{
  font-size:clamp(1.25rem,2vw,1.625rem);
  margin-bottom:10px;
}
.mk-cta p{font-size:.9375rem;color:var(--c-text);max-width:44em;}
.mk-cta__actions{flex:0 0 auto;display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 12. 页脚 ============ */
.mk-footer{
  background:linear-gradient(8deg,var(--c-brand-900),var(--c-brand-700));
  color:#C7D3E6;
  padding:72px 0 0;
}
.mk-footer__grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.mk-footer h3{
  font-size:.9375rem;
  color:#fff;
  margin-bottom:16px;
  font-weight:600;
}
.mk-footer p{
  font-size:.875rem;
  color:#C7D3E6;
  line-height:1.9;
  margin:14px 0 12px;
  max-width:30em;
}
.mk-footer .mk-logo{color:#fff;}
.mk-footer .mk-logo__text{color:#fff;}
.mk-footer .mk-logo__sub{color:rgba(199,211,230,.75);}
.mk-footer ul li + li{margin-top:10px;}
.mk-footer ul a{
  font-size:.875rem;
  color:#C7D3E6;
  display:inline-block;
  transition:color .22s var(--ease),transform .22s var(--ease);
}
.mk-footer ul a:hover{color:#fff;transform:translateX(2px);}
.mk-footer__brand > a{
  font-size:.875rem;
  color:#C7D3E6;
  text-decoration:underline;
  text-underline-offset:3px;
}
.mk-footer__brand > a:hover{color:#fff;}
.mk-footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:.8125rem;
  color:rgba(199,211,230,.82);
}

/* ============ 13. 动效 ============ */
.mk-reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.mk-reveal.is-in{opacity:1;transform:none;}

/* ============ 14. 响应式 ============ */
@media (max-width:1199.98px){
  .mk-menu{gap:20px;}
  .mk-menu__link{font-size:.8125rem;}
}
@media (max-width:991.98px){
  .mk-nav{display:none;}
  .mk-burger{display:flex;}
  .mk-chero__grid{grid-template-columns:1fr;gap:28px;min-height:0;}
  .mk-chero__art{order:-1;justify-content:flex-start;}
  .mk-chero__art svg{max-width:200px;}
  .mk-sec{padding:64px 0;}
  .mk-sec--tight{padding:52px 0;}
  .mk-band__grid{grid-template-columns:1fr;}
  .mk-band__item{
    border-right:0;
    border-bottom:1px solid var(--c-line);
    padding:20px 0;
  }
  .mk-band__item:last-child{border-bottom:0;padding-bottom:0;}
  .mk-band__item:first-child{padding-top:0;}
  .mk-footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .mk-wrap{padding:0 16px;}
  .mk-header{height:64px;}
  .mk-header.is-stuck{height:60px;}
  .mk-logo__mark{width:34px;height:34px;border-radius:10px;}
  .mk-logo__text{font-size:1rem;}
  .mk-header__side .mk-btn--sm{display:none;}
  .mk-chero{padding:112px 0 48px;}
  .mk-chero__actions .mk-btn{width:100%;}
  .mk-sec{padding:48px 0;}
  .mk-sec__head{margin-bottom:32px;}
  .mk-tl-item{padding-left:44px;margin-bottom:20px;}
  .mk-timeline::before{left:11px;}
  .mk-tl-item::before{left:4px;top:24px;}
  .mk-tl-card{padding:20px;}
  .mk-cta{
    flex-direction:column;
    align-items:flex-start;
    padding:28px 22px;
    gap:22px;
  }
  .mk-cta__actions{width:100%;}
  .mk-cta__actions .mk-btn{width:100%;}
  .mk-footer{padding-top:52px;}
  .mk-footer__grid{grid-template-columns:1fr 1fr;gap:26px;padding-bottom:36px;}
  .mk-footer__brand{grid-column:1 / -1;}
}
@media (max-width:575.98px){
  .mk-footer__grid{grid-template-columns:1fr;}
  .mk-faq .accordion-button{padding:16px 16px;font-size:.9375rem;}
  .mk-faq .accordion-body{padding:2px 16px 18px;font-size:.9375rem;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .mk-reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
/* ===== 1. 设计变量层 ===== */
:root{
  --c-brand-500:#1E6FD9;
  --c-brand-600:#14549E;
  --c-brand-700:#0E3E7D;
  --c-brand-900:#08203F;
  --c-brand-300:#7FB0EE;
  --c-brand-050:#EEF4FD;
  --c-accent-500:#FF6A1F;
  --c-accent-600:#E85A12;
  --c-accent-050:#FFF1E8;
  --c-ink:#0B1220;
  --c-text:#43506B;
  --c-muted:#7A879C;
  --c-line:#E4E9F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-ok:#16A34A;
  --c-warn:#F59E0B;
  --c-err:#DC2626;

  --r-card:16px;
  --r-lg:20px;
  --r-sm:12px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(11,18,32,.04),0 6px 18px rgba(11,18,32,.06);
  --sh-2:0 12px 32px rgba(14,62,125,.10);
  --sh-hover:0 18px 40px rgba(14,62,125,.16);

  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;
  --header-h:76px;

  /* Bootstrap 覆盖 */
  --bs-primary:#1E6FD9;
  --bs-primary-rgb:30,111,217;
  --bs-link-color:#1E6FD9;
  --bs-link-hover-color:#0E3E7D;
  --bs-border-radius:12px;
  --bs-border-radius-lg:16px;
  --bs-body-color:#43506B;
  --bs-body-bg:#F6F8FC;
  --bs-focus-ring-color:rgba(30,111,217,.35);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
}

/* ===== 2. reset 与基础排版 ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:1rem;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-brand-500);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--c-brand-700)}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em;max-width:38em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:4px}
.mk-num{font-variant-numeric:tabular-nums}
.mk-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ===== 3. 容器与栅格 ===== */
.mk-wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.mk-wrap{max-width:1320px}}
@media (max-width:767px){.mk-wrap{padding:0 16px}}
.mk-grid{display:grid;gap:24px}
.mk-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.mk-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.mk-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:991px){
  .mk-grid--3,.mk-grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .mk-grid{gap:16px}
  .mk-grid--2,.mk-grid--3,.mk-grid--4{grid-template-columns:minmax(0,1fr)}
}

/* ===== 4. 布局区块 ===== */
.mk-section{padding:96px 0}
.mk-section--tight{padding:72px 0}
.mk-section--surface{background:var(--c-surface)}
.mk-section--brand{background:var(--c-brand-050)}
@media (max-width:991px){.mk-section{padding:64px 0}.mk-section--tight{padding:56px 0}}
@media (max-width:767px){.mk-section{padding:48px 0}.mk-section--tight{padding:44px 0}}

.mk-sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.mk-sec-head h2{font-size:clamp(1.5rem,2.4vw,2.125rem);line-height:1.25}
.mk-sec-head p{margin:8px 0 0;color:var(--c-muted);font-size:.9375rem}
.mk-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8125rem;font-weight:600;color:var(--c-brand-600);letter-spacing:.06em;margin-bottom:12px}
.mk-eyebrow::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--c-accent-500)}

/* ===== 5. 顶部导航 ===== */
.mk-header{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:1030;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(11,18,32,.06);
  transition:height var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.mk-header.is-stuck{height:64px;background:rgba(255,255,255,.96);box-shadow:0 8px 24px rgba(11,18,32,.08)}
.mk-header__inner{height:100%;display:flex;align-items:center;gap:24px}
.mk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.mk-logo__mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-brand-500),var(--c-brand-700));
  box-shadow:0 6px 16px rgba(14,62,125,.24);
}
.mk-logo__text{display:block;font-size:1.0625rem;font-weight:700;letter-spacing:-.01em;line-height:1.1}
.mk-logo__sub{display:block;font-size:.6875rem;color:var(--c-muted);letter-spacing:.14em;line-height:1.4}
.mk-nav{margin-left:auto}
.mk-menu{display:flex;align-items:center;gap:28px}
.mk-menu__link{
  position:relative;display:inline-block;padding:6px 0;font-size:.875rem;font-weight:500;color:var(--c-text);
  transition:color var(--dur) var(--ease);
}
.mk-menu__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--c-accent-500);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.mk-menu__link:hover{color:var(--c-brand-600)}
.mk-menu__link:hover::after{transform:scaleX(1)}
.mk-menu__link.is-active{color:var(--c-ink);font-weight:600}
.mk-menu__link.is-active::after{transform:scaleX(1)}
.mk-header__actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.mk-iconbtn{
  width:44px;height:44px;display:grid;place-items:center;border-radius:50%;
  border:1px solid transparent;background:transparent;color:var(--c-text);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.mk-iconbtn:hover{background:var(--c-brand-050);color:var(--c-brand-600);border-color:var(--c-line)}
.mk-search{position:relative;display:flex;align-items:center}
.mk-search__form{
  position:absolute;right:52px;top:50%;transform:translateY(-50%);
  width:0;opacity:0;pointer-events:none;overflow:hidden;
  transition:width var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.mk-search.is-open .mk-search__form{width:200px;opacity:1;pointer-events:auto}
.mk-search__form input{
  width:100%;height:40px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-ink);font-size:.875rem;
}
.mk-search__form input:focus{outline:none;border-color:var(--c-brand-500);box-shadow:0 0 0 3px rgba(30,111,217,.15)}
.mk-burger{
  width:44px;height:44px;display:none;place-items:center;border-radius:var(--r-sm);
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-ink);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.mk-burger:hover{border-color:var(--c-brand-300);background:var(--c-brand-050)}
@media (max-width:1099px){
  .mk-menu{gap:18px}
  .mk-menu__link{font-size:.8125rem}
}
@media (max-width:991px){
  .mk-nav,.mk-search{display:none}
  .mk-burger{display:grid}
  .mk-header__inner{justify-content:space-between}
}
@media (max-width:400px){
  .mk-logo__sub{display:none}
}

/* 移动抽屉 */
.mk-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:1060;
  background:var(--c-surface);box-shadow:-12px 0 40px rgba(11,18,32,.16);
  transform:translateX(100%);transition:transform var(--dur) var(--ease);
  display:flex;flex-direction:column;padding:20px 20px 0;
}
.mk-drawer.is-open{transform:translateX(0)}
.mk-drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.mk-drawer__group{padding:20px 0 0}
.mk-drawer__label{font-size:.8125rem;color:var(--c-muted);margin-bottom:10px}
.mk-drawer__list li + li{margin-top:2px}
.mk-drawer__list a{
  display:block;padding:11px 12px;border-radius:var(--r-sm);color:var(--c-ink);font-size:.9375rem;font-weight:500;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.mk-drawer__list a:hover{background:var(--c-brand-050);color:var(--c-brand-600)}
.mk-drawer__list a.is-active{background:var(--c-brand-050);color:var(--c-brand-600);font-weight:600}
.mk-drawer__foot{margin-top:auto;padding:16px 0 24px;border-top:1px solid var(--c-line)}
.mk-drawer__foot .mk-btn{width:100%;justify-content:center}
.mk-backdrop{
  position:fixed;inset:0;background:rgba(8,32,63,.42);z-index:1050;opacity:0;pointer-events:none;
  transition:opacity var(--dur) var(--ease);
}
.mk-backdrop.is-open{opacity:1;pointer-events:auto}

/* ===== 6. 按钮体系 ===== */
.mk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 26px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:.9375rem;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.mk-btn--primary{background:var(--c-accent-500);color:#fff;box-shadow:0 6px 18px rgba(255,106,31,.22)}
.mk-btn--primary:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.mk-btn--primary:active{transform:translateY(0);box-shadow:none}
.mk-btn--ghost{background:var(--c-surface);color:var(--c-brand-600);border-color:var(--c-line);border-radius:var(--r-sm)}
.mk-btn--ghost:hover{border-color:var(--c-brand-500);background:var(--c-brand-050);color:var(--c-brand-700)}
.mk-btn--sm{height:42px;padding:0 20px;font-size:.875rem}
.mk-btn--block{width:100%}
.mk-btn[disabled],.mk-btn.is-disabled{background:var(--c-line);color:var(--c-muted);cursor:not-allowed;box-shadow:none;transform:none}
.mk-link{
  display:inline-flex;align-items:center;gap:6px;font-size:.875rem;font-weight:600;color:var(--c-brand-500);
  transition:color var(--dur) var(--ease);
}
.mk-link svg{transition:transform var(--dur) var(--ease)}
.mk-link:hover{color:var(--c-brand-700)}
.mk-link:hover svg{transform:translateX(3px)}
.mk-link--back:hover svg{transform:translateX(-3px)}

/* ===== 7. 分类 Hero ===== */
.mk-cathero{position:relative;padding:calc(var(--header-h) + 56px) 0 64px;overflow:hidden;background:var(--c-brand-050)}
.mk-cathero__bg{
  position:absolute;inset:0;background-size:cover;background-position:center;opacity:.16;
}
.mk-cathero__veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.86) 46%,rgba(238,244,253,.72) 100%);
}
.mk-cathero__inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:40px;align-items:center;min-height:300px}
.mk-cathero h1{font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.2;margin:14px 0 12px}
.mk-cathero p{font-size:1.0625rem;color:var(--c-text);margin:0 0 26px;max-width:34em}
.mk-cathero__art{display:grid;place-items:center}
.mk-cathero__art svg{width:230px;height:auto;max-width:100%}
@media (max-width:991px){
  .mk-cathero{padding:calc(var(--header-h) + 40px) 0 48px}
  .mk-cathero__inner{grid-template-columns:minmax(0,1fr);gap:24px;min-height:0}
  .mk-cathero__art{order:2;justify-items:start}
  .mk-cathero__art svg{width:170px}
}

/* 面包屑 */
.mk-crumb{font-size:.8125rem;line-height:1.5}
.mk-crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;white-space:nowrap}
.mk-crumb li{display:flex;align-items:center;gap:8px;color:var(--c-muted)}
.mk-crumb li + li::before{content:"/";color:var(--c-brand-300)}
.mk-crumb a{color:var(--c-muted)}
.mk-crumb a:hover{color:var(--c-brand-600)}
.mk-crumb [aria-current="page"]{color:var(--c-ink);font-weight:600}
@media (max-width:767px){
  .mk-crumb ol{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
}

/* ===== 8. 卡片与组件 ===== */
.mk-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:28px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.mk-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-300)}
.mk-card h3{font-size:1.125rem;line-height:1.4;font-weight:600;margin-bottom:10px}
.mk-card p{margin:0;font-size:.9375rem;line-height:1.8;color:var(--c-text)}
.mk-card__icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--c-brand-050);color:var(--c-brand-600);
}
.mk-card--accent .mk-card__icon{background:var(--c-accent-050);color:var(--c-accent-600)}

.mk-badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-pill);
  font-size:.75rem;font-weight:600;line-height:1.6;
  background:var(--c-brand-050);color:var(--c-brand-600);
}
.mk-badge--accent{background:var(--c-accent-050);color:var(--c-accent-600)}

/* 数据条 */
.mk-statbar{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  overflow:hidden;
}
.mk-statbar__item{padding:32px 24px;text-align:center;position:relative}
.mk-statbar__item + .mk-statbar__item::before{
  content:"";position:absolute;left:0;top:24%;bottom:24%;width:1px;background:var(--c-line);
}
.mk-statbar__num{display:block;font-size:2rem;font-weight:700;line-height:1.15;color:var(--c-brand-600);font-variant-numeric:tabular-nums}
.mk-statbar__label{display:block;font-size:.75rem;color:var(--c-muted);margin-top:6px;letter-spacing:.04em}
@media (max-width:767px){
  .mk-statbar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mk-statbar__item{padding:22px 12px}
  .mk-statbar__item:nth-child(3)::before{display:none}
  .mk-statbar__num{font-size:1.5rem}
}

/* 字段说明列表 */
.mk-fieldlist{border-top:1px solid var(--c-line)}
.mk-fieldrow{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:24px;
  padding:20px 4px;border-bottom:1px dashed var(--c-line);
  transition:background var(--dur) var(--ease);
}
.mk-fieldrow:hover{background:var(--c-brand-050)}
.mk-fieldrow dt{font-size:.8125rem;font-weight:600;color:var(--c-brand-600);letter-spacing:.02em}
.mk-fieldrow dd{margin:0;font-size:.9375rem;color:var(--c-text)}
@media (max-width:767px){
  .mk-fieldrow{grid-template-columns:minmax(0,1fr);gap:6px;padding:16px 4px}
}

/* 资讯卡片 */
.mk-news{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:991px){.mk-news{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:767px){.mk-news{grid-template-columns:minmax(0,1fr)}}
.mk-newscard{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.mk-newscard:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-300)}
.mk-ratio{position:relative;width:100%;background:var(--c-brand-050);overflow:hidden}
.mk-ratio--4x3{aspect-ratio:4/3}
.mk-ratio img{width:100%;height:100%;object-fit:cover}
.mk-newscard__body{padding:20px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.mk-newscard__body h3{font-size:1.0625rem;line-height:1.5;font-weight:600}
.mk-newscard__body h3 a{color:var(--c-ink)}
.mk-newscard__body h3 a:hover{color:var(--c-brand-600)}
.mk-newscard__body p{margin:0;font-size:.875rem;line-height:1.8;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mk-newscard__meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--c-muted)}

/* ===== 9. FAQ ===== */
.mk-faq{display:flex;flex-direction:column;gap:12px;max-width:960px}
.mk-acc .accordion-item{
  border:1px solid var(--c-line);border-radius:14px;background:var(--c-surface);
  box-shadow:var(--sh-1);overflow:hidden;
}
.mk-acc .accordion-item + .accordion-item{margin-top:12px}
.mk-acc .accordion-button{
  width:100%;display:flex;align-items:center;gap:14px;padding:20px 22px;
  background:var(--c-surface);color:var(--c-ink);font-size:1rem;font-weight:600;line-height:1.5;
  border:0;border-left:3px solid transparent;border-radius:0;box-shadow:none;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.mk-acc .accordion-button:not(.collapsed){
  color:var(--c-brand-600);border-left-color:var(--c-accent-500);background:var(--c-brand-050);
}
.mk-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-brand-500);outline-offset:-2px}
.mk-acc .accordion-button::after{display:none}
.mk-acc__icon{position:relative;flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:var(--c-brand-050)}
.mk-acc__icon::before,.mk-acc__icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-brand-600);border-radius:2px;
  transform:translate(-50%,-50%);transition:opacity var(--dur) var(--ease),background var(--dur) var(--ease);
}
.mk-acc__icon::before{width:10px;height:2px}
.mk-acc__icon::after{width:2px;height:10px}
.mk-acc .accordion-button:not(.collapsed) .mk-acc__icon{background:var(--c-accent-050)}
.mk-acc .accordion-button:not(.collapsed) .mk-acc__icon::before,
.mk-acc .accordion-button:not(.collapsed) .mk-acc__icon::after{background:var(--c-accent-600)}
.mk-acc .accordion-button:not(.collapsed) .mk-acc__icon::after{opacity:0}
.mk-acc .accordion-body{padding:0 22px 22px 59px;font-size:1rem;line-height:1.85;color:var(--c-text);max-width:68em}
@media (max-width:767px){
  .mk-acc .accordion-button{padding:16px 16px;font-size:.9375rem}
  .mk-acc .accordion-body{padding:0 16px 18px 50px;font-size:.9375rem}
}

/* ===== 10. 下载 CTA（浅色简化版） ===== */
.mk-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  background:var(--c-brand-050);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:40px;
}
.mk-cta h2{font-size:clamp(1.375rem,2.2vw,1.75rem);margin-bottom:8px}
.mk-cta p{margin:0;color:var(--c-text);font-size:.9375rem}
.mk-cta__actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:767px){
  .mk-cta{padding:28px 20px}
  .mk-cta__actions{width:100%;flex-direction:column}
  .mk-cta__actions .mk-btn{width:100%}
}

/* ===== 11. 页脚 ===== */
.mk-footer{
  position:relative;background:linear-gradient(8deg,var(--c-brand-900),var(--c-brand-700));
  color:#C7D3E6;padding:72px 0 28px;overflow:hidden;
}
.mk-footer::before{
  content:"";position:absolute;inset:0;background:url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  opacity:.10;pointer-events:none;
}
.mk-footer .mk-wrap{position:relative;z-index:2}
.mk-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.mk-footer__brand p{color:#C7D3E6;font-size:.875rem;line-height:1.85;margin:16px 0 12px;max-width:30em}
.mk-footer h3{color:#fff;font-size:.9375rem;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.mk-footer ul li + li{margin-top:10px}
.mk-footer ul a{color:#C7D3E6;font-size:.875rem;display:inline-block;transition:color var(--dur) var(--ease),transform var(--dur) var(--ease)}
.mk-footer ul a:hover{color:#fff;transform:translateX(2px)}
.mk-footer__brand > a{display:inline-block;margin-top:6px;color:#8FA6C8;font-size:.8125rem;text-decoration:underline}
.mk-footer__brand > a:hover{color:#fff}
.mk-footer .mk-logo{color:#fff}
.mk-footer .mk-logo__text{color:#fff}
.mk-footer .mk-logo__sub{color:#8FA6C8}
.mk-footer__bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:.8125rem;color:#9DB0CC;
}
@media (max-width:991px){
  .mk-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
}
@media (max-width:575px){
  .mk-footer{padding:48px 0 22px}
  .mk-footer__grid{grid-template-columns:minmax(0,1fr);gap:24px}
}

/* ===== 12. 状态与动效 ===== */
.mk-reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.mk-reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  .mk-reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}