/* roulang page: index */
:root{
  --mk-primary:#19E3A6;
  --mk-primary-dim:rgba(25,227,166,.12);
  --mk-primary-line:rgba(25,227,166,.28);
  --mk-second:#6C4DE0;
  --mk-bg:#0A0B0D;
  --mk-surface:#101216;
  --mk-card:#1A1D22;
  --mk-line:#262A31;
  --mk-text:#E6E8EB;
  --mk-muted:#98A0AA;
  --mk-faint:#6B7280;
  --mk-light:#F4F5F3;
  --mk-light-text:#0F1113;
  --mk-radius-card:16px;
  --mk-radius-btn:10px;
  --mk-radius-img:14px;
  --mk-glow:0 0 32px rgba(25,227,166,.16);
  --mk-ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:25,227,166;
  --bs-body-bg:#0A0B0D;
  --bs-body-color:#E6E8EB;
  --bs-border-color:#262A31;
  --bs-border-radius:16px;
  --bs-link-color:#19E3A6;
  --bs-link-hover-color:#19E3A6;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","MiSans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--mk-bg);
  color:var(--mk-text);
  font-family:var(--bs-font-sans-serif);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--mk-primary);text-decoration:none;transition:color .22s var(--mk-ease),opacity .22s var(--mk-ease)}
a:hover{color:#4ff0bd}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;color:var(--mk-text)}
p{margin:0}
::selection{background:rgba(25,227,166,.28);color:#fff}
a:focus-visible,button:focus-visible,input:focus-visible,.accordion-button:focus-visible{
  outline:2px solid var(--mk-primary);
  outline-offset:2px;
  border-radius:6px;
}
.mk-container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--mk-primary);font-weight:600;margin-bottom:14px;
}
.section-kicker::before{content:"";width:22px;height:1px;background:var(--mk-primary);display:block}
.section-title{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700}
.section-desc{margin-top:14px;color:var(--mk-muted);font-size:16px;max-width:680px}
.text-muted-2{color:var(--mk-muted)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,11,13,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .28s var(--mk-ease),box-shadow .28s var(--mk-ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(25,227,166,0),rgba(25,227,166,.75),rgba(108,77,224,.5),rgba(25,227,166,0));
}
.site-header.is-scrolled{background:rgba(8,9,11,.96);box-shadow:0 12px 34px rgba(0,0,0,.45)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:70px;gap:18px}
.brand{display:flex;align-items:center;gap:11px;color:var(--mk-text)}
.brand:hover{color:var(--mk-text)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 38px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(25,227,166,.9),rgba(108,77,224,.75));
  box-shadow:0 0 22px rgba(25,227,166,.24);
}
.brand-mark svg{width:20px;height:20px;fill:#08110E}
.brand-text{font-weight:700;font-size:17px;letter-spacing:.02em;white-space:nowrap}
.brand-text small{display:block;font-size:11px;font-weight:500;letter-spacing:.22em;color:var(--mk-faint)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;color:var(--mk-muted);font-size:15px;font-weight:500;
  padding:10px 14px;border-radius:9px;white-space:nowrap;
  transition:color .2s var(--mk-ease),background .2s var(--mk-ease);
}
.nav-link:hover{color:var(--mk-text);background:rgba(255,255,255,.04)}
.nav-link.active{color:var(--mk-primary);text-shadow:0 0 14px rgba(25,227,166,.55)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1px;
  background:var(--mk-primary);box-shadow:0 0 12px rgba(25,227,166,.9);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  width:42px;height:42px;border-radius:11px;border:1px solid var(--mk-line);
  background:rgba(255,255,255,.03);display:grid;place-items:center;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--mk-text);border-radius:2px}
.mobile-panel{
  display:none;border-top:1px solid var(--mk-line);background:rgba(8,9,11,.98);
  padding:10px 0 22px;
}
.mobile-panel.open{display:block;animation:dropIn .2s var(--mk-ease)}
@keyframes dropIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.mobile-panel a{
  display:block;padding:13px 24px;color:var(--mk-muted);font-size:16px;
  border-left:3px solid transparent;
}
.mobile-panel a.active{color:var(--mk-primary);border-left-color:var(--mk-primary);background:rgba(25,227,166,.06)}

/* ---------- buttons ---------- */
.btn-mk{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--mk-radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--mk-ease),box-shadow .2s var(--mk-ease),background .2s var(--mk-ease),color .2s var(--mk-ease);
}
.btn-mk-primary{background:var(--mk-primary);color:#07130F;box-shadow:0 0 24px rgba(25,227,166,.24)}
.btn-mk-primary:hover{background:#37efb7;color:#07130F;transform:translateY(-2px);box-shadow:0 0 34px rgba(25,227,166,.42)}
.btn-mk-primary:active{transform:translateY(0)}
.btn-mk-outline{background:transparent;color:var(--mk-primary);border-color:var(--mk-primary-line)}
.btn-mk-outline:hover{background:var(--mk-primary-dim);color:var(--mk-primary);transform:translateY(-2px)}
.btn-mk-ghost{background:transparent;color:var(--mk-text);border-color:var(--mk-line)}
.btn-mk-ghost:hover{color:var(--mk-primary);border-color:var(--mk-primary-line);transform:translateY(-2px)}
.btn-mk-sm{height:40px;padding:0 18px;font-size:14px}

/* ---------- badges / tags ---------- */
.tag-badge{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  color:var(--mk-primary);background:var(--mk-primary-dim);border:1px solid var(--mk-primary-line);
  white-space:nowrap;
}
.tag-badge.is-plain{color:var(--mk-muted);background:rgba(255,255,255,.03);border-color:var(--mk-line)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:112px 0 88px;
  background-image:linear-gradient(rgba(10,11,13,.78),rgba(10,11,13,.9)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(25,227,166,0),rgba(25,227,166,.55),rgba(25,227,166,0));
}
.hero-inner{max-width:680px;position:relative;z-index:2}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--mk-primary);letter-spacing:.14em;margin-bottom:20px;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--mk-primary);box-shadow:0 0 12px var(--mk-primary)}
.hero h1{
  font-size:clamp(2.2rem,5.2vw,4.2rem);
  font-weight:800;line-height:1.18;letter-spacing:.01em;
}
.hero h1 em{font-style:normal;color:var(--mk-primary)}
.hero-sub{margin-top:20px;font-size:clamp(1rem,1.4vw,1.15rem);color:var(--mk-muted);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:38px;margin-top:52px;padding-top:26px;
  border-top:1px solid rgba(38,42,49,.9);
}
.hero-trust div strong{display:block;font-size:clamp(1.5rem,2.4vw,2rem);font-weight:700;color:var(--mk-text);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.hero-trust div span{font-size:13.5px;color:var(--mk-faint)}

/* ---------- brand strip ---------- */
.brand-strip{background:var(--mk-surface);border-bottom:1px solid var(--mk-line)}
.brand-strip .inner{
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;padding:26px 0;
}
.brand-strip p{font-size:16px;color:var(--mk-muted)}
.brand-strip p b{color:var(--mk-text);font-weight:600}
.strip-badges{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- story (light panel) ---------- */
.story{background:var(--mk-light);color:var(--mk-light-text)}
.story h2,.story .section-title{color:var(--mk-light-text)}
.story .section-kicker{color:#0F766E}
.story .section-kicker::before{background:#0F766E}
.story p{color:#3C4247;margin-top:16px}
.story-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.story-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:28px;
  color:#0B4F45;font-weight:600;border-bottom:1px solid rgba(11,79,69,.35);padding-bottom:3px;
}
.story-link:hover{color:#0F766E;border-bottom-color:#0F766E;gap:12px}
.story-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--mk-radius-img);filter:saturate(.94) contrast(1.05)}

/* ---------- feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px}
.card-mk{
  display:flex;flex-direction:column;background:var(--mk-card);border:1px solid var(--mk-line);
  border-radius:var(--mk-radius-card);overflow:hidden;
  transition:transform .25s var(--mk-ease),border-color .25s var(--mk-ease),box-shadow .25s var(--mk-ease);
}
.card-mk:hover{transform:translateY(-2px);border-color:var(--mk-primary-line);box-shadow:var(--mk-glow)}
.card-mk .card-media{overflow:hidden}
.card-mk .card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;filter:saturate(.9) contrast(1.05);transition:transform .35s var(--mk-ease),filter .35s var(--mk-ease)}
.card-mk:hover .card-media img{transform:scale(1.03);filter:saturate(.95) contrast(1.06) brightness(1.04)}
.card-mk .card-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-mk .card-title{font-size:1.22rem;font-weight:600;line-height:1.45}
.card-mk .card-title a{color:var(--mk-text)}
.card-mk .card-title a:hover{color:var(--mk-primary)}
.card-mk .card-text{color:var(--mk-muted);font-size:15px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-mk .card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--mk-faint);white-space:nowrap}
.card-mk.is-lead .card-media img{aspect-ratio:16/10}
.card-mk.is-lead .card-title{font-size:clamp(1.35rem,2.2vw,1.75rem)}
.card-stack{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.card-stack .card-mk .card-media img{aspect-ratio:16/7}

/* ---------- news list ---------- */
.news-section{background:var(--mk-surface);border-top:1px solid var(--mk-line);border-bottom:1px solid var(--mk-line)}
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:0 44px;border-top:1px solid var(--mk-line)}
.news-row{
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:24px 4px;border-bottom:1px solid var(--mk-line);
  transition:background .22s var(--mk-ease),padding .22s var(--mk-ease);
}
.news-row:hover{background:rgba(25,227,166,.035);padding-left:12px;padding-right:12px}
.news-body{min-width:0}
.news-title{
  display:block;font-size:1.05rem;font-weight:600;color:var(--mk-text);line-height:1.5;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.news-title:hover{color:var(--mk-primary)}
.news-summary{
  margin-top:8px;font-size:14.5px;color:var(--mk-muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-side{display:flex;align-items:center;gap:14px;flex:0 0 auto;padding-top:3px}
.news-time{font-size:13px;color:var(--mk-faint);white-space:nowrap;font-variant-numeric:tabular-nums}
.news-arrow{color:var(--mk-faint);transition:color .2s var(--mk-ease),transform .2s var(--mk-ease)}
.news-row:hover .news-arrow{color:var(--mk-primary);transform:translateX(3px)}
.empty-state{
  border:1px dashed var(--mk-line);border-radius:var(--mk-radius-card);
  padding:48px 24px;text-align:center;color:var(--mk-muted);
}
.empty-state .empty-mark{font-size:22px;letter-spacing:.4em;color:var(--mk-faint);margin-bottom:12px}
.empty-state a{display:inline-block;margin-top:12px;font-weight:600}

/* ---------- stats / logos ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.stat{
  border:1px solid var(--mk-line);border-radius:var(--mk-radius-card);padding:26px 24px;
  background:linear-gradient(180deg,rgba(26,29,34,.9),rgba(16,18,22,.9));
}
.stat strong{display:block;font-size:clamp(2rem,4vw,2.9rem);font-weight:700;color:var(--mk-primary);line-height:1.1;font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:10px;font-size:14.5px;color:var(--mk-muted)}
.logo-strip{
  margin-top:44px;padding-top:26px;border-top:1px solid var(--mk-line);
  display:flex;flex-wrap:wrap;gap:14px 30px;
}
.logo-strip span{
  font-size:13.5px;color:var(--mk-faint);letter-spacing:.06em;
  padding:7px 14px;border:1px solid var(--mk-line);border-radius:999px;
  filter:grayscale(1);opacity:.82;
}

/* ---------- subscribe ---------- */
.subscribe-panel{
  border:1px solid var(--mk-line);border-radius:22px;padding:48px 44px;
  background-image:linear-gradient(rgba(10,11,13,.88),rgba(10,11,13,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.subscribe-panel h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.subscribe-panel p{color:var(--mk-muted);margin-top:12px;max-width:620px}
.subscribe-form{display:flex;gap:12px;margin-top:28px;max-width:600px}
.form-control-mk{
  flex:1;height:46px;padding:0 16px;border-radius:var(--mk-radius-btn);
  background:rgba(10,11,13,.75);border:1px solid var(--mk-line);color:var(--mk-text);font-size:15px;
  transition:border-color .2s var(--mk-ease),box-shadow .2s var(--mk-ease);
}
.form-control-mk::placeholder{color:var(--mk-faint)}
.form-control-mk:focus{border-color:var(--mk-primary);box-shadow:0 0 0 3px rgba(25,227,166,.12);outline:none}
.form-note{margin-top:14px;font-size:13px;color:var(--mk-faint)}

/* ---------- faq ---------- */
.accordion-mk .accordion-item{
  background:var(--mk-card);border:1px solid var(--mk-line);
  border-radius:var(--mk-radius-card);overflow:hidden;margin-bottom:14px;
}
.accordion-mk .accordion-button{
  background:transparent;color:var(--mk-text);font-size:16.5px;font-weight:600;
  padding:22px 24px;line-height:1.5;box-shadow:none;border-radius:0;
}
.accordion-mk .accordion-button:not(.collapsed){
  color:var(--mk-primary);background:rgba(25,227,166,.05);border-left:3px solid var(--mk-primary);
}
.accordion-mk .accordion-button:not(.collapsed)::after{filter:brightness(1.7)}
.accordion-mk .accordion-button::after{
  transition:transform .25s var(--mk-ease);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2398A0AA'%3E%3Cpath d='M1.6 4.6 8 11l6.4-6.4 1 1L8 13 0.6 5.6z'/%3E%3C/svg%3E");
}
.accordion-mk .accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.accordion-mk .accordion-body{padding:6px 24px 24px;color:var(--mk-muted);font-size:15.5px;line-height:1.85}

/* ---------- footer ---------- */
.site-footer{background:var(--mk-bg);border-top:1px solid var(--mk-line);position:relative;padding:64px 0 0}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(25,227,166,0),rgba(25,227,166,.6),rgba(108,77,224,.4),rgba(25,227,166,0));
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-grid p{color:var(--mk-muted);font-size:14.5px;line-height:1.8;max-width:340px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--mk-text)}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.footer-col a{color:var(--mk-muted);font-size:14.5px}
.footer-col a:hover{color:var(--mk-primary)}
.footer-col li span{color:var(--mk-muted);font-size:14.5px}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--mk-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--mk-faint);
}
.footer-bottom a{color:var(--mk-faint)}
.footer-bottom a:hover{color:var(--mk-primary)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .3s var(--mk-ease),transform .3s var(--mk-ease)}
.reveal.in-view{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .mk-container{padding:0 22px}
  .section{padding:88px 0}
  .story-grid{gap:44px}
  .news-list{gap:0 32px}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .section{padding:76px 0}
  .hero{padding:88px 0 72px}
  .feature-grid{grid-template-columns:1fr}
  .card-stack{grid-template-rows:auto auto}
  .story-grid{grid-template-columns:1fr}
  .story-media{order:-1}
  .news-list{grid-template-columns:1fr;gap:0}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .subscribe-panel{padding:38px 28px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .section{padding:64px 0}
  .hero{padding:72px 0 60px}
  .hero-trust{gap:26px;margin-top:40px}
  .hero-trust div{flex:1 1 42%}
  .brand-strip .inner{padding:22px 0}
  .news-row{flex-direction:column;gap:12px}
  .news-side{padding-top:0}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn-mk{width:100%}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:575.98px){
  .mk-container{padding:0 18px}
  .section{padding:56px 0}
  .hero{padding:60px 0 52px}
  .brand-text{font-size:15.5px}
  .brand-text small{font-size:10px;letter-spacing:.16em}
  .hero-actions .btn-mk{width:100%}
  .stats-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .subscribe-panel{padding:30px 20px}
  .card-mk .card-body{padding:20px}
}

/* roulang page: category1 */
:root{
  --mk-bg:#0A0B0D;
  --mk-surface:#101216;
  --mk-card:#1A1D22;
  --mk-border:#262A31;
  --mk-border-soft:#1E2228;
  --mk-text:#E6E8EB;
  --mk-muted:#98A0AA;
  --mk-dim:#6B7280;
  --mk-primary:#19E3A6;
  --mk-primary-08:rgba(25,227,166,.08);
  --mk-primary-14:rgba(25,227,166,.14);
  --mk-primary-20:rgba(25,227,166,.20);
  --mk-secondary:#6C4DE0;
  --mk-panel-light:#F4F5F3;
  --mk-panel-light-text:#0F1113;
  --mk-radius:16px;
  --mk-radius-sm:10px;
  --mk-radius-img:14px;
  --mk-glow:0 0 0 1px rgba(25,227,166,.16), 0 18px 40px -22px rgba(25,227,166,.35);
  --mk-ease:cubic-bezier(.22,.61,.36,1);
  --mk-nav-h:70px;

  --bs-primary:#19E3A6;
  --bs-primary-rgb:25,227,166;
  --bs-body-bg:#0A0B0D;
  --bs-body-color:#E6E8EB;
  --bs-border-color:#262A31;
  --bs-border-radius:16px;
  --bs-link-color:#19E3A6;
  --bs-link-hover-color:#5cf0c2;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","MiSans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--mk-bg);
  color:var(--mk-text);
  font-family:var(--bs-font-sans-serif);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--mk-primary);text-decoration:none;transition:color .22s var(--mk-ease);}
a:hover{color:#5cf0c2;}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:700;letter-spacing:.01em;line-height:1.3;}
h1{font-size:clamp(2.05rem,5vw,3.6rem);font-weight:800;line-height:1.2;}
h2{font-size:clamp(1.6rem,3vw,2.35rem);}
h3{font-size:clamp(1.15rem,1.6vw,1.42rem);font-weight:600;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--mk-primary);outline-offset:2px;border-radius:6px;}

.mk-container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.mk-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,11,13,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--mk-border-soft);
  transition:background .25s var(--mk-ease),border-color .25s var(--mk-ease),box-shadow .25s var(--mk-ease);
}
.mk-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,166,.75) 22%,rgba(108,77,224,.6) 78%,transparent);
  opacity:.75;
}
.mk-header.is-scrolled{background:rgba(8,9,11,.95);border-bottom-color:var(--mk-border);box-shadow:0 12px 32px -22px rgba(0,0,0,.9);}
.header-inner{
  min-height:var(--mk-nav-h);
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--mk-text);flex-shrink:0;}
.brand:hover{color:var(--mk-text);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(25,227,166,.22),rgba(108,77,224,.28));
  border:1px solid rgba(25,227,166,.35);
  box-shadow:0 0 18px -6px rgba(25,227,166,.45);
}
.brand-mark svg{width:19px;height:19px;fill:var(--mk-primary);}
.brand-copy{display:flex;flex-direction:column;line-height:1.15;}
.brand-copy strong{font-size:1.02rem;font-weight:700;letter-spacing:.02em;}
.brand-copy em{font-style:normal;font-size:.72rem;color:var(--mk-dim);letter-spacing:.14em;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:var(--mk-radius-sm);
  color:var(--mk-muted);font-size:.94rem;font-weight:500;
  transition:color .2s var(--mk-ease),background .2s var(--mk-ease);
}
.nav-link:hover{color:var(--mk-text);background:rgba(255,255,255,.04);}
.nav-link.active{color:var(--mk-primary);background:var(--mk-primary-08);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--mk-primary);
  box-shadow:0 0 10px 1px rgba(25,227,166,.7);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;
  background:rgba(255,255,255,.04);border:1px solid var(--mk-border);
  padding:0;cursor:pointer;
}
.nav-toggle span{display:block;width:17px;height:2px;margin:3px auto;border-radius:2px;background:var(--mk-text);transition:transform .22s var(--mk-ease),opacity .22s var(--mk-ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ---------- buttons ---------- */
.mk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--mk-radius-sm);
  font-size:.95rem;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--mk-ease),background .2s var(--mk-ease),box-shadow .2s var(--mk-ease),color .2s var(--mk-ease),border-color .2s var(--mk-ease);
}
.mk-btn-primary{background:var(--mk-primary);color:#06231A;box-shadow:0 10px 26px -16px rgba(25,227,166,.9);}
.mk-btn-primary:hover{background:#3cecb6;color:#06231A;transform:translateY(-2px);box-shadow:0 14px 32px -14px rgba(25,227,166,.95);}
.mk-btn-primary:active{transform:translateY(0);}
.mk-btn-outline{background:transparent;color:var(--mk-primary);border-color:rgba(25,227,166,.5);}
.mk-btn-outline:hover{background:var(--mk-primary-14);color:#5cf0c2;border-color:var(--mk-primary);}
.mk-btn-ghost{background:transparent;color:var(--mk-text);border-color:var(--mk-border);}
.mk-btn-ghost:hover{color:var(--mk-primary);border-color:rgba(25,227,166,.6);background:rgba(25,227,166,.06);}
.mk-btn-sm{padding:8px 16px;font-size:.86rem;}

/* ---------- hero ---------- */
.mk-hero{
  position:relative;
  padding:clamp(72px,11vw,140px) 0 clamp(56px,8vw,104px);
  background-image:linear-gradient(90deg,rgba(6,7,9,.94) 0%,rgba(7,8,10,.86) 42%,rgba(8,9,12,.72) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--mk-border-soft);
  overflow:hidden;
}
.mk-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,166,.6),rgba(108,77,224,.5),transparent);
}
.hero-inner{position:relative;z-index:2;max-width:720px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.82rem;color:var(--mk-dim);margin-bottom:22px;}
.crumb a{color:var(--mk-dim);}
.crumb a:hover{color:var(--mk-muted);}
.crumb .sep{color:#3A3F47;}
.crumb .current{color:var(--mk-primary);}
.mk-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:6px 14px;border-radius:999px;
  background:var(--mk-primary-08);border:1px solid rgba(25,227,166,.3);
  color:var(--mk-primary);font-size:.8rem;font-weight:600;letter-spacing:.1em;
  margin-bottom:20px;
}
.mk-eyebrow i{font-size:.72rem;}
.hero-inner h1{margin-bottom:20px;}
.hero-sub{color:var(--mk-muted);font-size:clamp(1rem,1.35vw,1.12rem);max-width:600px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px;}
.hero-points{
  display:flex;flex-wrap:wrap;gap:12px 40px;
  padding-top:26px;border-top:1px solid var(--mk-border-soft);
}
.hero-points li{display:flex;align-items:baseline;gap:9px;font-size:.9rem;color:var(--mk-muted);}
.hero-points b{font-size:1.32rem;font-weight:700;color:var(--mk-primary);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- sections ---------- */
.mk-section{padding:clamp(58px,7.6vw,110px) 0;}
.mk-section.tint{background:var(--mk-surface);border-top:1px solid var(--mk-border-soft);border-bottom:1px solid var(--mk-border-soft);}
.section-head{max-width:740px;margin-bottom:clamp(34px,4.4vw,58px);}
.section-head .kicker{display:block;font-size:.78rem;letter-spacing:.2em;color:var(--mk-primary);font-weight:600;margin-bottom:14px;text-transform:uppercase;}
.section-head p{color:var(--mk-muted);margin-bottom:0;}
.section-head h2{margin-bottom:14px;}

/* ---------- split block ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:clamp(28px,4vw,64px);align-items:center;}
.split .media{border-radius:var(--mk-radius);overflow:hidden;border:1px solid var(--mk-border);}
.split .media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;filter:saturate(.9) contrast(1.05);transition:transform .35s var(--mk-ease),filter .35s var(--mk-ease);}
.split .media:hover img{transform:scale(1.03);filter:saturate(.96) contrast(1.08) brightness(1.04);}
.check-list li{
  display:flex;gap:14px;padding:15px 0;border-bottom:1px solid var(--mk-border-soft);
}
.check-list li:last-child{border-bottom:none;}
.check-list .ico{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;margin-top:5px;
  display:grid;place-items:center;
  background:var(--mk-primary-08);border:1px solid rgba(25,227,166,.28);color:var(--mk-primary);font-size:.72rem;
}
.check-list strong{display:block;color:var(--mk-text);font-weight:600;font-size:1rem;margin-bottom:2px;}
.check-list span{color:var(--mk-muted);font-size:.94rem;line-height:1.75;}

/* ---------- steps ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
  counter-reset:step;
}
.step{
  position:relative;
  background:var(--mk-card);
  border:1px solid var(--mk-border);
  border-radius:var(--mk-radius);
  padding:30px 24px 28px;
  transition:transform .25s var(--mk-ease),border-color .25s var(--mk-ease),box-shadow .25s var(--mk-ease);
}
.step:hover{transform:translateY(-3px);border-color:rgba(25,227,166,.42);box-shadow:var(--mk-glow);}
.step::before{
  content:"";position:absolute;top:26px;right:-22px;width:22px;height:1px;
  background:linear-gradient(90deg,rgba(25,227,166,.55),rgba(25,227,166,.05));
}
.step:last-child::before{display:none;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:13px;margin-bottom:18px;
  background:linear-gradient(140deg,rgba(25,227,166,.2),rgba(108,77,224,.24));
  border:1px solid rgba(25,227,166,.34);
  color:var(--mk-primary);font-weight:700;font-size:1.05rem;
  font-variant-numeric:tabular-nums;
}
.step h3{margin-bottom:10px;font-size:1.1rem;}
.step p{color:var(--mk-muted);font-size:.94rem;margin-bottom:0;line-height:1.8;}

/* ---------- table ---------- */
.table-wrap{
  border:1px solid var(--mk-border);border-radius:var(--mk-radius);
  background:var(--mk-card);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.mk-table{width:100%;min-width:640px;border-collapse:collapse;font-size:.94rem;}
table.mk-table thead th{
  background:rgba(255,255,255,.03);
  color:var(--mk-muted);font-weight:600;font-size:.82rem;letter-spacing:.08em;
  text-align:left;padding:16px 22px;border-bottom:1px solid var(--mk-border);white-space:nowrap;
}
table.mk-table tbody td{
  padding:17px 22px;border-bottom:1px solid var(--mk-border-soft);color:var(--mk-muted);vertical-align:top;
}
table.mk-table tbody tr:last-child td{border-bottom:none;}
table.mk-table tbody tr:hover td{background:rgba(25,227,166,.035);}
table.mk-table tbody td:first-child{color:var(--mk-text);font-weight:600;white-space:nowrap;}
.table-hint{margin:16px 0 0;font-size:.84rem;color:var(--mk-dim);}

/* ---------- checklist panel ---------- */
.check-panel{
  background:var(--mk-card);border:1px solid var(--mk-border);border-radius:var(--mk-radius);
  padding:clamp(28px,3.6vw,48px);
}
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 34px;}
.check-item{
  display:flex;gap:13px;align-items:flex-start;
  padding:16px 18px;border-radius:var(--mk-radius-sm);
  background:rgba(255,255,255,.018);border:1px solid var(--mk-border-soft);
  transition:border-color .22s var(--mk-ease),background .22s var(--mk-ease);
}
.check-item:hover{border-color:rgba(25,227,166,.35);background:rgba(25,227,166,.05);}
.check-item i{color:var(--mk-primary);font-size:.95rem;margin-top:5px;}
.check-item p{margin:0;font-size:.94rem;color:var(--mk-muted);line-height:1.75;}
.check-item strong{color:var(--mk-text);font-weight:600;}

/* ---------- faq ---------- */
.faq .accordion-item{
  background:var(--mk-card);
  border:1px solid var(--mk-border);
  border-radius:var(--mk-radius)!important;
  margin-bottom:14px;
  overflow:hidden;
}
.faq .accordion-button{
  background:transparent;color:var(--mk-text);
  font-size:1.02rem;font-weight:600;padding:20px 24px;
  box-shadow:none;border-radius:var(--mk-radius)!important;
}
.faq .accordion-button:not(.collapsed){color:var(--mk-primary);background:rgba(25,227,166,.05);}
.faq .accordion-button::after{
  background-image:none;
  content:"\f078";
  font-family:"Font Awesome 6 Free";font-weight:900;
  width:auto;height:auto;font-size:.78rem;
  color:var(--mk-muted);
  transition:transform .25s var(--mk-ease),color .25s var(--mk-ease);
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--mk-primary);}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq .accordion-body{
  color:var(--mk-muted);font-size:.95rem;line-height:1.85;
  padding:4px 24px 24px 27px;border-left:3px solid var(--mk-primary);
  margin-left:0;
}
.faq .accordion-body p:last-child{margin-bottom:0;}

/* ---------- cta / subscribe ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border:1px solid var(--mk-border);border-radius:var(--mk-radius);
  background:linear-gradient(120deg,rgba(25,227,166,.08),rgba(108,77,224,.12)),var(--mk-card);
  padding:clamp(30px,4.4vw,58px);
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 220px at 88% 12%,rgba(25,227,166,.14),transparent 70%);
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,52px);align-items:center;}
.cta-grid h2{margin-bottom:12px;}
.cta-grid p{color:var(--mk-muted);margin-bottom:0;}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-form input{
  flex:1 1 220px;min-width:0;
  background:#0D0F13;border:1px solid var(--mk-border);color:var(--mk-text);
  border-radius:var(--mk-radius-sm);padding:12px 16px;font-size:.95rem;
  transition:border-color .2s var(--mk-ease),box-shadow .2s var(--mk-ease);
}
.sub-form input::placeholder{color:var(--mk-dim);}
.sub-form input:focus{outline:none;border-color:var(--mk-primary);box-shadow:0 0 0 3px rgba(25,227,166,.14);}
.form-note{margin:12px 0 0;font-size:.8rem;color:var(--mk-dim);}

/* ---------- links grid ---------- */
.links-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.link-card{
  display:block;padding:24px;border-radius:var(--mk-radius);
  background:var(--mk-card);border:1px solid var(--mk-border);
  color:var(--mk-text);
  transition:transform .25s var(--mk-ease),border-color .25s var(--mk-ease),box-shadow .25s var(--mk-ease);
}
.link-card:hover{transform:translateY(-3px);border-color:rgba(25,227,166,.42);box-shadow:var(--mk-glow);color:var(--mk-text);}
.link-card .badge-mk{margin-bottom:14px;}
.link-card h3{font-size:1.05rem;margin-bottom:8px;}
.link-card p{color:var(--mk-muted);font-size:.92rem;margin-bottom:12px;line-height:1.75;}
.link-card .more{font-size:.86rem;color:var(--mk-primary);font-weight:600;}
.link-card .more i{transition:transform .22s var(--mk-ease);}
.link-card:hover .more i{transform:translateX(4px);}

.badge-mk{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  background:var(--mk-primary-08);border:1px solid rgba(25,227,166,.3);
  color:var(--mk-primary);font-size:.74rem;font-weight:600;letter-spacing:.06em;
}
.badge-mk.violet{background:rgba(108,77,224,.12);border-color:rgba(108,77,224,.4);color:#A992FF;}

/* ---------- footer ---------- */
.site-footer{
  background:#08090B;border-top:1px solid var(--mk-border-soft);
  position:relative;padding:clamp(48px,6vw,80px) 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,166,.55),rgba(108,77,224,.45),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;}
.footer-brand .brand-text{font-weight:700;font-size:1rem;}
.footer-col p{color:var(--mk-muted);font-size:.9rem;line-height:1.8;margin-bottom:0;max-width:320px;}
.footer-col h4{font-size:.9rem;color:var(--mk-text);letter-spacing:.06em;margin-bottom:16px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a,.footer-col ul li span{color:var(--mk-muted);font-size:.89rem;}
.footer-col ul li a:hover{color:var(--mk-primary);}
.footer-bottom{
  margin-top:clamp(36px,4.6vw,60px);
  border-top:1px solid var(--mk-border-soft);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:.82rem;color:var(--mk-dim);
}
.footer-bottom a{color:var(--mk-dim);}
.footer-bottom a:hover{color:var(--mk-primary);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--mk-ease),transform .32s var(--mk-ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .steps{grid-template-columns:repeat(2,1fr);}
  .step:nth-child(2)::before{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:991.98px){
  .nav-toggle{display:block;}
  .header-actions .mk-btn{display:none;}
  .nav-links{
    position:fixed;top:var(--mk-nav-h);left:0;right:0;
    background:rgba(8,9,11,.98);
    backdrop-filter:blur(16px);
    border-bottom:1px solid var(--mk-border);
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px 20px 26px;margin-left:0;
    max-height:calc(100vh - var(--mk-nav-h));overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .2s var(--mk-ease),transform .2s var(--mk-ease),visibility .2s var(--mk-ease);
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none;}
  .nav-link{padding:14px 14px 14px 18px;font-size:1rem;border-left:3px solid transparent;border-radius:0 8px 8px 0;}
  .nav-link.active{border-left-color:var(--mk-primary);border-radius:0 8px 8px 0;}
  .nav-link.active::after{display:none;}
  .split{grid-template-columns:1fr;}
  .split .media{order:-1;}
  .cta-grid{grid-template-columns:1fr;}
  .links-grid{grid-template-columns:1fr;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .mk-container{padding:0 20px;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .step::before{display:none;}
  .check-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .hero-points{gap:12px 26px;}
  .mk-hero{background-position:70% center;}
}
@media (max-width:575.98px){
  .brand-copy em{display:none;}
  .brand-copy strong{font-size:.95rem;}
  .header-inner{gap:14px;}
  .hero-cta .mk-btn{width:100%;}
  .hero-points b{font-size:1.16rem;}
  .faq .accordion-button{padding:17px 18px;font-size:.96rem;}
  .faq .accordion-body{padding:2px 18px 20px 21px;}
  table.mk-table thead th,table.mk-table tbody td{padding:14px 16px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --mk-bg:#0A0B0D;
  --mk-surface:#101216;
  --mk-card:#1A1D22;
  --mk-border:#262A31;
  --mk-text:#E6E8EB;
  --mk-muted:#98A0AA;
  --mk-dim:#6B7280;
  --mk-primary:#19E3A6;
  --mk-primary-soft:rgba(25,227,166,.12);
  --mk-accent:#6C4DE0;
  --mk-radius:16px;
  --mk-radius-sm:10px;
  --mk-radius-lg:22px;
  --mk-gap:24px;
  --mk-shadow:0 0 32px rgba(25,227,166,.16);
  --mk-ease:cubic-bezier(.22,.61,.36,1);

  --bs-body-bg:#0A0B0D;
  --bs-body-color:#E6E8EB;
  --bs-border-color:#262A31;
  --bs-border-radius:16px;
  --bs-border-radius-sm:10px;
  --bs-link-color:#19E3A6;
  --bs-link-hover-color:#5FF0C6;
  --bs-primary:#19E3A6;
  --bs-primary-rgb:25,227,166;
  --bs-body-font-family:'PingFang SC','HarmonyOS Sans','MiSans','Source Han Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --bs-body-font-size:16.5px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--mk-bg);
  color:var(--mk-text);
  font-family:'PingFang SC','HarmonyOS Sans','MiSans','Source Han Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--mk-primary);text-decoration:none;transition:color .2s var(--mk-ease)}
a:hover{color:#5FF0C6}
button,input{font-family:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,h5{margin:0;line-height:1.3;font-weight:700}
p{margin:0 0 1em}
:focus-visible{outline:2px solid var(--mk-primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(25,227,166,.28);color:#fff}

.mk-container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,11,13,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .25s var(--mk-ease),border-color .25s var(--mk-ease);
  border-bottom:1px solid rgba(38,42,49,.7);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,166,.7),rgba(108,77,224,.5),transparent);
  pointer-events:none;
}
.site-header.is-scrolled{background:rgba(8,9,11,.96);border-bottom-color:var(--mk-border)}
.mk-navbar{display:flex;align-items:center;gap:20px;height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--mk-text);flex:0 0 auto}
.brand:hover{color:var(--mk-text)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(25,227,166,.2),rgba(108,77,224,.22));
  border:1px solid rgba(25,227,166,.35);
  box-shadow:0 0 18px rgba(25,227,166,.18);
}
.brand-mark svg{width:17px;height:17px;fill:var(--mk-primary)}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;color:var(--mk-muted);font-size:15px;padding:8px 13px;border-radius:8px;
  transition:color .2s var(--mk-ease),background .2s var(--mk-ease);
}
.nav-link:hover{color:var(--mk-text);background:rgba(255,255,255,.045)}
.nav-link.active{color:var(--mk-primary)}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;border-radius:2px;
  background:var(--mk-primary);box-shadow:0 0 12px rgba(25,227,166,.85);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;background:transparent;
  border:1px solid var(--mk-border);flex-direction:column;justify-content:center;align-items:center;gap:4px;
  cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:17px;height:1.6px;background:var(--mk-text);border-radius:2px;transition:transform .2s var(--mk-ease),opacity .2s var(--mk-ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}
.nav-drawer{
  position:fixed;inset:70px 0 0 0;background:#0A0B0D;padding:18px 20px 40px;z-index:1029;
  transform:translateY(-12px);opacity:0;visibility:hidden;overflow-y:auto;
  transition:transform .22s var(--mk-ease),opacity .22s var(--mk-ease),visibility .22s;
}
.nav-drawer.open{transform:none;opacity:1;visibility:visible}
.drawer-link{display:block;padding:14px 12px;border-bottom:1px solid var(--mk-border);color:var(--mk-text);font-size:16px}
.drawer-link:hover{color:var(--mk-primary)}
.drawer-link.active{color:var(--mk-primary);border-left:3px solid var(--mk-primary);padding-left:15px;background:rgba(25,227,166,.06)}
.drawer-note{padding:20px 12px 0;color:var(--mk-dim);font-size:13.5px}

/* ============ 按钮 ============ */
.btn-mk{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--mk-primary);color:#06110D;border:1px solid var(--mk-primary);
  border-radius:var(--mk-radius-sm);padding:.58rem 1.15rem;font-size:14.5px;font-weight:600;
  transition:transform .18s var(--mk-ease),box-shadow .18s var(--mk-ease),background .18s var(--mk-ease),color .18s var(--mk-ease);
}
.btn-mk:hover{background:#33EEB4;color:#06110D;transform:translateY(-1px);box-shadow:0 0 24px rgba(25,227,166,.4)}
.btn-mk:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--mk-text);border:1px solid var(--mk-border);
  border-radius:var(--mk-radius-sm);padding:.58rem 1.15rem;font-size:14.5px;font-weight:600;
  transition:border-color .18s var(--mk-ease),color .18s var(--mk-ease),background .18s var(--mk-ease),transform .18s var(--mk-ease);
}
.btn-ghost:hover{border-color:var(--mk-primary);color:var(--mk-primary);background:var(--mk-primary-soft);transform:translateY(-1px)}
.btn-line{
  display:inline-flex;align-items:center;gap:8px;color:var(--mk-primary);font-size:14.5px;font-weight:600;
  border-bottom:1px solid transparent;transition:border-color .2s var(--mk-ease),gap .2s var(--mk-ease);
}
.btn-line:hover{border-color:var(--mk-primary);gap:12px}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:52px 0 48px;
  background-image:linear-gradient(115deg,rgba(10,11,13,.90),rgba(10,11,13,.95)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--mk-border);
}
.article-hero::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,166,.35),transparent);
}
.mk-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--mk-dim);margin-bottom:20px}
.mk-breadcrumb a{color:var(--mk-muted);text-decoration:none}
.mk-breadcrumb a:hover{color:var(--mk-primary)}
.mk-breadcrumb .sep{color:#3A4048}
.mk-breadcrumb .current{color:var(--mk-primary)}
.article-hero h1{
  font-size:clamp(1.85rem,4.2vw,3rem);
  font-weight:800;line-height:1.22;letter-spacing:.01em;
  max-width:940px;margin:18px 0 22px;
}
.mk-badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  border:1px solid rgba(25,227,166,.42);background:rgba(25,227,166,.08);
  color:var(--mk-primary);font-size:13px;font-weight:600;line-height:1.6;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;color:var(--mk-muted);font-size:14px}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-item i{color:var(--mk-primary);font-size:13px;opacity:.85}

/* ============ 正文区 ============ */
.article-section{padding:56px 0 24px}
.article-card{
  background:var(--mk-surface);border:1px solid var(--mk-border);border-radius:var(--mk-radius);
  padding:42px 46px;
}
.prose{max-width:768px;font-size:16.5px;line-height:1.92;color:var(--mk-text)}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 1.15em;color:#DCE0E5}
.prose h2{
  position:relative;font-size:clamp(1.3rem,2.4vw,1.6rem);font-weight:700;
  margin:2.1em 0 .85em;padding-left:15px;line-height:1.4;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.18em;width:3px;border-radius:2px;
  background:var(--mk-primary);box-shadow:0 0 12px rgba(25,227,166,.6);
}
.prose h3{font-size:1.18rem;font-weight:600;margin:1.7em 0 .7em}
.prose h4{font-size:1.02rem;font-weight:600;margin:1.4em 0 .6em;color:var(--mk-text)}
.prose a{color:var(--mk-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose a:hover{color:#5FF0C6}
.prose ul,.prose ol{padding-left:1.35em;margin:0 0 1.2em}
.prose li{margin:.45em 0;color:#DCE0E5}
.prose blockquote{
  margin:1.5em 0;padding:18px 22px;border-left:3px solid var(--mk-primary);
  background:rgba(255,255,255,.028);border-radius:0 12px 12px 0;
  color:var(--mk-muted);font-size:15.5px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:14px;margin:1.5em 0;filter:saturate(.9) contrast(1.05);width:100%}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:13.5px;color:var(--mk-dim);text-align:center;margin-top:10px}
.prose table{width:100%;display:block;overflow-x:auto;border-collapse:collapse;margin:1.5em 0;font-size:15px}
.prose th,.prose td{border:1px solid var(--mk-border);padding:10px 14px;text-align:left}
.prose th{background:rgba(25,227,166,.07);color:var(--mk-primary);font-weight:600;white-space:nowrap}
.prose code{
  background:#050608;border:1px solid var(--mk-border);border-radius:6px;
  padding:2px 6px;font-size:14px;color:#8FF3D2;
}
.prose pre{
  background:#050608;border:1px solid var(--mk-border);border-radius:12px;
  padding:16px 18px;overflow-x:auto;margin:1.5em 0;
}
.prose pre code{border:0;background:none;padding:0}
.prose hr{border:0;border-top:1px solid var(--mk-border);margin:2.2em 0}

.mk-empty{
  text-align:center;padding:64px 20px;border:1px dashed var(--mk-border);border-radius:14px;
  background:rgba(255,255,255,.015);
}
.mk-empty .empty-mark{
  display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;
  border:1px solid var(--mk-border);border-radius:14px;color:var(--mk-dim);
  font-size:20px;letter-spacing:2px;margin-bottom:18px;
}
.mk-empty p{color:var(--mk-muted);font-size:15px;margin-bottom:16px}

/* ============ 文末 ============ */
.mk-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.mk-tag{
  padding:6px 14px;border-radius:999px;border:1px solid var(--mk-border);
  background:rgba(255,255,255,.03);color:var(--mk-muted);font-size:13px;
  transition:border-color .2s var(--mk-ease),color .2s var(--mk-ease);
}
.mk-tag:hover{border-color:var(--mk-primary);color:var(--mk-primary)}
.postnav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
.postnav a{
  display:block;padding:16px 18px;border:1px solid var(--mk-border);border-radius:var(--mk-radius-sm);
  background:var(--mk-surface);color:var(--mk-text);font-size:14.5px;line-height:1.6;
  transition:border-color .2s var(--mk-ease),transform .2s var(--mk-ease),color .2s var(--mk-ease);
}
.postnav a:hover{border-color:var(--mk-primary);color:var(--mk-primary);transform:translateY(-2px)}
.postnav .label{display:block;font-size:12.5px;color:var(--mk-dim);margin-bottom:6px;letter-spacing:.04em}
.back-home{margin-top:24px}

/* ============ 侧栏 ============ */
.article-side{padding-top:4px}
.side-sticky{display:block}
.side-card{
  background:var(--mk-surface);border:1px solid var(--mk-border);border-radius:var(--mk-radius);
  padding:22px;margin-bottom:20px;
}
.side-card h3{position:relative;font-size:16px;font-weight:700;margin:0 0 16px;padding-left:13px}
.side-card h3::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.22em;width:3px;border-radius:2px;
  background:var(--mk-primary);box-shadow:0 0 10px rgba(25,227,166,.55);
}
.side-meta-list{list-style:none}
.side-meta-list li{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:11px 0;border-bottom:1px dashed var(--mk-border);font-size:14px;
}
.side-meta-list li:last-child{border-bottom:0;padding-bottom:0}
.side-meta-list span{color:var(--mk-dim)}
.side-meta-list strong{color:var(--mk-text);font-weight:600;text-align:right}
.side-links a{
  display:flex;align-items:flex-start;gap:10px;padding:12px 0;border-bottom:1px solid var(--mk-border);
  color:var(--mk-text);font-size:14.5px;line-height:1.65;
  transition:color .2s var(--mk-ease),padding-left .2s var(--mk-ease);
}
.side-links a:last-child{border-bottom:0;padding-bottom:0}
.side-links a i{color:var(--mk-primary);font-size:12px;margin-top:6px;flex:0 0 auto}
.side-links a:hover{color:var(--mk-primary);padding-left:4px}
.side-card--soft{background:linear-gradient(160deg,rgba(25,227,166,.08),rgba(16,18,22,.9));border-color:rgba(25,227,166,.24)}
.side-card--soft p{font-size:14px;color:var(--mk-muted);margin-bottom:14px}
.side-cta{
  display:inline-flex;align-items:center;gap:8px;color:var(--mk-primary);font-size:14.5px;font-weight:600;
  border-bottom:1px solid transparent;transition:border-color .2s var(--mk-ease),gap .2s var(--mk-ease);
}
.side-cta:hover{border-color:var(--mk-primary);gap:12px}

/* ============ 相关推荐 ============ */
.related-section{padding:64px 0 8px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px}
.section-head h2{font-size:clamp(1.4rem,2.6vw,1.9rem);font-weight:700;letter-spacing:.01em}
.section-head p{color:var(--mk-muted);font-size:14.5px;margin:8px 0 0}
.rel-card{
  display:flex;gap:16px;height:100%;padding:16px;
  background:var(--mk-surface);border:1px solid var(--mk-border);border-radius:var(--mk-radius);
  color:var(--mk-text);
  transition:transform .22s var(--mk-ease),border-color .22s var(--mk-ease),box-shadow .22s var(--mk-ease);
}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(25,227,166,.5);box-shadow:var(--mk-shadow);color:var(--mk-text)}
.rel-thumb{
  width:124px;height:92px;flex:0 0 auto;border-radius:12px;overflow:hidden;
  background:#050608;
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;filter:saturate(.9) contrast(1.05);transition:transform .3s var(--mk-ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body h3{font-size:15.5px;font-weight:600;line-height:1.55;margin:0 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body p{font-size:13.5px;color:var(--mk-muted);line-height:1.7;margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-meta{font-size:12.5px;color:var(--mk-dim)}

/* ============ 订阅 CTA ============ */
.cta-section{padding:64px 0 0}
.cta-band{
  border-radius:var(--mk-radius-lg);border:1px solid rgba(25,227,166,.22);
  background:radial-gradient(120% 160% at 10% 8%,rgba(25,227,166,.14),transparent 58%),var(--mk-surface);
  padding:44px 44px;
}
.cta-band h2{font-size:clamp(1.4rem,2.6vw,1.9rem);font-weight:700;margin-bottom:12px}
.cta-band > p{color:var(--mk-muted);font-size:15px;max-width:620px;margin-bottom:26px}
.cta-form{display:flex;gap:12px;max-width:560px}
.cta-form input{
  flex:1;height:50px;background:#0A0B0D;border:1px solid var(--mk-border);border-radius:var(--mk-radius-sm);
  color:var(--mk-text);padding:0 16px;font-size:15px;transition:border-color .2s var(--mk-ease),box-shadow .2s var(--mk-ease);
}
.cta-form input::placeholder{color:var(--mk-dim)}
.cta-form input:focus{outline:none;border-color:var(--mk-primary);box-shadow:0 0 0 3px rgba(25,227,166,.15)}
.cta-form .btn-mk{height:50px;padding:0 24px;font-size:15px}
.form-note{font-size:13px;color:var(--mk-dim);margin:14px 0 0}
.form-note.is-ok{color:var(--mk-primary)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:88px;padding:64px 0 28px;
  background:#0A0B0D;border-top:1px solid var(--mk-border);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,166,.55),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{font-size:16px;font-weight:700}
.footer-col h4{font-size:14.5px;font-weight:700;margin:0 0 16px;color:var(--mk-text)}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{color:var(--mk-muted);font-size:14px}
.footer-col a:hover{color:var(--mk-primary)}
.footer-col span{color:var(--mk-muted);font-size:14px}
.footer-col p{color:var(--mk-muted);font-size:14px;line-height:1.85;max-width:340px;margin:0}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:46px;padding-top:22px;border-top:1px solid var(--mk-border);
  color:var(--mk-dim);font-size:13.5px;
}
.footer-bottom a{color:var(--mk-muted)}
.footer-bottom a:hover{color:var(--mk-primary)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--mk-ease),transform .32s var(--mk-ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (min-width:1200px){
  .side-sticky{position:sticky;top:96px}
}
@media (max-width:1199.98px){
  .article-card{padding:36px 34px}
  .prose{max-width:100%}
  .article-side{margin-top:8px}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .mk-navbar{height:64px;gap:12px}
  .nav-drawer{inset:64px 0 0 0}
  .article-hero{padding:40px 0 36px}
  .article-section{padding:40px 0 16px}
  .article-card{padding:30px 26px}
  .cta-band{padding:34px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .site-footer{margin-top:64px;padding:48px 0 24px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .brand-text{font-size:15.5px}
  .article-card{padding:24px 20px}
  .article-hero h1{margin:14px 0 18px}
  .rel-card{flex-direction:column}
  .rel-thumb{width:100%;height:150px}
  .postnav{grid-template-columns:1fr}
  .cta-form{flex-direction:column}
  .cta-form .btn-mk{width:100%}
  .related-section{padding:48px 0 0}
  .cta-section{padding:48px 0 0}
}
@media (max-width:575.98px){
  .mk-container{padding:0 20px}
  .nav-actions .btn-mk{padding:.5rem .9rem;font-size:13.5px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .meta-row{gap:8px 16px;font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category2 */
:root{
  --mk-primary:#19E3A6;
  --mk-primary-06:rgba(25,227,166,.06);
  --mk-primary-12:rgba(25,227,166,.12);
  --mk-primary-20:rgba(25,227,166,.20);
  --mk-secondary:#6C4DE0;
  --mk-bg:#0A0B0D;
  --mk-surface:#101216;
  --mk-card:#1A1D22;
  --mk-line:#262A31;
  --mk-text:#E6E8EB;
  --mk-muted:#98A0AA;
  --mk-dim:#6B7280;
  --mk-light:#F4F5F3;
  --mk-light-text:#0F1113;
  --mk-radius:16px;
  --mk-radius-sm:10px;
  --mk-radius-img:14px;
  --mk-glow:0 0 0 1px rgba(25,227,166,.16), 0 20px 44px -28px rgba(25,227,166,.42);
  --mk-ease:cubic-bezier(.22,.61,.36,1);

  --bs-body-bg:#0A0B0D;
  --bs-body-color:#E6E8EB;
  --bs-border-color:#262A31;
  --bs-border-radius:16px;
  --bs-border-radius-sm:10px;
  --bs-primary:#19E3A6;
  --bs-primary-rgb:25,227,166;
  --bs-link-color:#19E3A6;
  --bs-link-hover-color:#5cf0c1;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","MiSans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--mk-bg);
  color:var(--mk-text);
  font-family:var(--bs-font-sans-serif);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img{max-width:100%;display:block;}
a{color:var(--mk-primary);text-decoration:none;transition:color .2s var(--mk-ease);}
a:hover{color:#5cf0c1;}
button{font-family:inherit;}
h1,h2,h3,h4{font-weight:700;line-height:1.3;margin:0 0 .6em;letter-spacing:.01em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:var(--mk-primary-20);color:#fff;}

:focus-visible{
  outline:2px solid var(--mk-primary);
  outline-offset:2px;
  border-radius:4px;
}

.mk-container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(10,11,13,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--mk-line);
  transition:background .25s var(--mk-ease),border-color .25s var(--mk-ease);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,rgba(25,227,166,0),rgba(25,227,166,.75) 32%,rgba(108,77,224,.65) 72%,rgba(25,227,166,0));
  pointer-events:none;
}
.site-header.is-scrolled{
  background:rgba(8,9,11,.96);
  border-bottom-color:#2f343d;
}

.nav-shell{
  display:flex;
  align-items:center;
  gap:28px;
  height:70px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--mk-text);
}
.brand:hover{color:var(--mk-text);}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:linear-gradient(140deg,rgba(25,227,166,.18),rgba(108,77,224,.22));
  border:1px solid var(--mk-primary-20);
  box-shadow:0 0 22px -8px rgba(25,227,166,.6);
}
.brand-mark svg{width:18px;height:18px;fill:var(--mk-primary);}
.brand-text{
  font-size:16px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-text em{
  font-style:normal;
  color:var(--mk-primary);
}

.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  font-size:15px;
  color:var(--mk-muted);
  border-radius:10px;
  transition:color .2s var(--mk-ease),background .2s var(--mk-ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--mk-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--mk-ease);
  box-shadow:0 0 12px rgba(25,227,166,.85);
}
.nav-link:hover{color:var(--mk-text);background:rgba(255,255,255,.03);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--mk-primary);text-shadow:0 0 14px rgba(25,227,166,.45);}
.nav-link.active::after{transform:scaleX(1);}

.nav-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  font-size:14.5px;
  font-weight:600;
  color:#08120E;
  background:var(--mk-primary);
  border:1px solid var(--mk-primary);
  border-radius:var(--mk-radius-sm);
  transition:transform .2s var(--mk-ease),box-shadow .2s var(--mk-ease),filter .2s var(--mk-ease);
}
.nav-cta:hover{
  color:#08120E;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 22px -6px rgba(25,227,166,.75);
}
.nav-cta:active{transform:translateY(1px);}

.nav-toggle{
  display:none;
  margin-left:auto;
  width:42px;height:42px;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--mk-line);
  border-radius:10px;
  color:var(--mk-text);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--mk-primary);color:var(--mk-primary);}

/* ---------- buttons ---------- */
.btn-mk{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:13px 26px;
  font-size:15.5px;
  font-weight:600;
  border-radius:var(--mk-radius-sm);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--mk-ease),box-shadow .2s var(--mk-ease),background .2s var(--mk-ease),color .2s var(--mk-ease),filter .2s var(--mk-ease);
}
.btn-mk-primary{
  background:var(--mk-primary);
  color:#08120E;
  border-color:var(--mk-primary);
}
.btn-mk-primary:hover{
  color:#08120E;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 12px 34px -14px rgba(25,227,166,.85);
}
.btn-mk-primary:active{transform:translateY(0);}
.btn-mk-outline{
  background:transparent;
  color:var(--mk-primary);
  border-color:var(--mk-primary-20);
}
.btn-mk-outline:hover{
  background:var(--mk-primary-12);
  color:var(--mk-primary);
  border-color:var(--mk-primary);
}
.btn-mk-ghost{
  background:transparent;
  color:var(--mk-text);
  border-color:var(--mk-line);
}
.btn-mk-ghost:hover{
  color:var(--mk-primary);
  border-color:var(--mk-primary);
}
.btn-mk-sm{padding:9px 18px;font-size:14px;}

/* ---------- breadcrumb ---------- */
.mk-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--mk-dim);
  margin-bottom:22px;
}
.mk-breadcrumb a{color:var(--mk-muted);}
.mk-breadcrumb a:hover{color:var(--mk-primary);}
.mk-breadcrumb span.sep{color:#3a4048;}
.mk-breadcrumb .current{color:var(--mk-primary);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:96px 0 88px;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,rgba(10,11,13,.94) 0%,rgba(10,11,13,.82) 46%,rgba(10,11,13,.72) 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,rgba(25,227,166,0),rgba(25,227,166,.55),rgba(25,227,166,0));
}
.page-hero .mk-container{position:relative;z-index:1;}
.hero-inner{max-width:700px;}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  margin-bottom:20px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--mk-primary);
  border:1px solid var(--mk-primary-20);
  background:var(--mk-primary-06);
  border-radius:999px;
}
.page-hero h1{
  font-size:clamp(2.1rem,4.6vw,3.5rem);
  font-weight:800;
  line-height:1.18;
  margin-bottom:18px;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--mk-primary);
  text-shadow:0 0 26px rgba(25,227,166,.35);
}
.hero-sub{
  font-size:17px;
  color:var(--mk-muted);
  max-width:620px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:14px 44px;
  padding-top:26px;
  border-top:1px solid var(--mk-line);
}
.hero-point strong{
  display:block;
  font-size:1.55rem;
  font-weight:700;
  color:var(--mk-text);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.hero-point span{font-size:13.5px;color:var(--mk-dim);}

/* ---------- sections ---------- */
.section{padding:100px 0;}
.section-alt{background:var(--mk-surface);}
.section-tight{padding:76px 0;}

.section-head{max-width:720px;margin-bottom:52px;}
.section-head .eyebrow{
  display:block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--mk-primary);
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(1.6rem,3vw,2.35rem);
  margin-bottom:14px;
}
.section-head p{color:var(--mk-muted);margin:0;}

/* ---------- claim strip ---------- */
.claim-strip{
  border-top:1px solid var(--mk-line);
  border-bottom:1px solid var(--mk-line);
  background:var(--mk-surface);
}
.claim-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:26px 0;
}
.claim-text{
  font-size:16.5px;
  color:var(--mk-text);
  margin:0;
  max-width:640px;
}
.claim-badges{display:flex;flex-wrap:wrap;gap:10px;}

.badge-mk{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 14px;
  font-size:13px;
  color:var(--mk-primary);
  background:var(--mk-primary-06);
  border:1px solid var(--mk-primary-20);
  border-radius:999px;
  white-space:nowrap;
}
.badge-mk.neutral{
  color:var(--mk-muted);
  background:rgba(255,255,255,.03);
  border-color:var(--mk-line);
}

/* ---------- zigzag ---------- */
.zig{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
  padding:56px 0;
  border-bottom:1px solid var(--mk-line);
}
.zig:last-child{border-bottom:0;padding-bottom:0;}
.zig:first-child{padding-top:0;}
.zig-media{position:relative;}
.zig-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--mk-radius-img);
  border:1px solid var(--mk-line);
  filter:saturate(.9) contrast(1.05);
  transition:transform .35s var(--mk-ease),filter .35s var(--mk-ease),border-color .35s var(--mk-ease);
}
.zig-media img:hover{
  transform:scale(1.03);
  filter:saturate(.95) contrast(1.06) brightness(1.05);
  border-color:var(--mk-primary-20);
}
.zig-index{
  position:absolute;
  top:-16px;
  left:-16px;
  width:52px;height:52px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  font-weight:700;
  color:#08120E;
  background:var(--mk-primary);
  border-radius:14px;
  box-shadow:0 10px 30px -12px rgba(25,227,166,.85);
}
.zig-text h3{
  font-size:clamp(1.3rem,2.1vw,1.7rem);
  margin-bottom:16px;
}
.zig-text p{color:var(--mk-muted);}
.zig-text p:last-of-type{margin-bottom:18px;}
.zig-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  font-weight:600;
  color:var(--mk-primary);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--mk-ease),gap .2s var(--mk-ease);
}
.zig-link:hover{border-bottom-color:var(--mk-primary);gap:12px;}
.zig.reverse .zig-media{order:2;}
.zig.reverse .zig-text{order:1;}

/* ---------- line index ---------- */
.line-list{border-top:1px solid var(--mk-line);}
.line-item{
  display:grid;
  grid-template-columns:64px 1fr auto;
  align-items:center;
  gap:24px;
  padding:26px 18px;
  border-bottom:1px solid var(--mk-line);
  border-radius:12px;
  transition:background .22s var(--mk-ease);
}
.line-item:hover{background:rgba(255,255,255,.028);}
.line-no{
  font-size:1.25rem;
  font-weight:700;
  color:var(--mk-dim);
  font-variant-numeric:tabular-nums;
  transition:color .22s var(--mk-ease);
}
.line-item:hover .line-no{color:var(--mk-primary);}
.line-body h3{
  font-size:1.1rem;
  font-weight:600;
  margin-bottom:6px;
  transition:color .22s var(--mk-ease);
}
.line-item:hover .line-body h3{color:var(--mk-primary);}
.line-body p{
  margin:0;
  font-size:14.5px;
  color:var(--mk-muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.line-tags{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;}

/* ---------- stats ---------- */
.stats-band{
  background:
    radial-gradient(700px 320px at 12% 0%,rgba(25,227,166,.10),transparent 62%),
    var(--mk-surface);
  border-top:1px solid var(--mk-line);
  border-bottom:1px solid var(--mk-line);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
}
.stat-item{
  padding:22px 20px;
  border-left:1px solid var(--mk-line);
}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-item strong{
  display:block;
  font-size:clamp(2rem,4vw,2.9rem);
  font-weight:700;
  color:var(--mk-text);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.stat-item strong i{font-style:normal;font-size:.5em;color:var(--mk-primary);margin-left:2px;}
.stat-item span{display:block;margin-top:8px;font-size:14px;color:var(--mk-muted);}

/* ---------- accordion ---------- */
.mk-accordion .accordion-item{
  background:var(--mk-card);
  border:1px solid var(--mk-line);
  border-radius:var(--mk-radius);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .22s var(--mk-ease),box-shadow .22s var(--mk-ease);
}
.mk-accordion .accordion-item:last-child{margin-bottom:0;}
.mk-accordion .accordion-item:hover{border-color:rgba(25,227,166,.32);}
.mk-accordion .accordion-button{
  background:transparent;
  color:var(--mk-text);
  font-size:16.5px;
  font-weight:600;
  padding:20px 22px;
  box-shadow:none;
  border-radius:var(--mk-radius);
}
.mk-accordion .accordion-button:not(.collapsed){
  color:var(--mk-primary);
  background:transparent;
  box-shadow:inset 3px 0 0 0 var(--mk-primary);
}
.mk-accordion .accordion-button:focus{
  box-shadow:none;
  outline:2px solid var(--mk-primary);
  outline-offset:-2px;
}
.mk-accordion .accordion-button::after{
  background-image:none;
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  color:var(--mk-dim);
  width:auto;height:auto;
  transition:transform .24s var(--mk-ease),color .24s var(--mk-ease);
  transform:rotate(0deg);
}
.mk-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(180deg);
  color:var(--mk-primary);
}
.mk-accordion .accordion-body{
  padding:0 22px 24px;
  color:var(--mk-muted);
  font-size:15.5px;
  line-height:1.9;
}

/* ---------- cta ---------- */
.cta-panel{
  position:relative;
  padding:52px;
  border-radius:22px;
  background:linear-gradient(150deg,rgba(25,227,166,.09),rgba(108,77,224,.10) 58%,rgba(16,18,22,.96));
  border:1px solid var(--mk-line);
  overflow:hidden;
}
.cta-panel::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,rgba(25,227,166,0),rgba(25,227,166,.85),rgba(25,227,166,0));
}
.cta-panel h2{
  font-size:clamp(1.5rem,2.6vw,2.05rem);
  margin-bottom:12px;
}
.cta-panel p{color:var(--mk-muted);max-width:620px;}
.cta-form{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
  max-width:620px;
}
.cta-form input{
  flex:1 1 260px;
  min-width:0;
  height:50px;
  padding:0 16px;
  font-size:15px;
  color:var(--mk-text);
  background:#0E1014;
  border:1px solid var(--mk-line);
  border-radius:var(--mk-radius-sm);
  transition:border-color .2s var(--mk-ease),box-shadow .2s var(--mk-ease);
}
.cta-form input::placeholder{color:var(--mk-dim);}
.cta-form input:focus{
  outline:none;
  border-color:var(--mk-primary);
  box-shadow:0 0 0 3px rgba(25,227,166,.14);
}
.cta-form .btn-mk{height:50px;}
.form-note{
  margin-top:14px;
  font-size:13px;
  color:var(--mk-dim);
}

/* ---------- cross links ---------- */
.link-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.link-card{
  display:block;
  padding:26px 24px;
  background:var(--mk-card);
  border:1px solid var(--mk-line);
  border-radius:var(--mk-radius);
  color:var(--mk-text);
  transition:transform .24s var(--mk-ease),border-color .24s var(--mk-ease),box-shadow .24s var(--mk-ease);
}
.link-card:hover{
  color:var(--mk-text);
  transform:translateY(-3px);
  border-color:rgba(25,227,166,.4);
  box-shadow:var(--mk-glow);
}
.link-card h3{
  font-size:1.08rem;
  margin-bottom:8px;
  color:var(--mk-text);
}
.link-card:hover h3{color:var(--mk-primary);}
.link-card p{margin:0;font-size:14px;color:var(--mk-muted);}
.link-card .arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  font-size:13.5px;
  color:var(--mk-primary);
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  background:var(--mk-surface);
  padding:72px 0 32px;
  border-top:1px solid var(--mk-line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(25,227,166,0),rgba(25,227,166,.7) 30%,rgba(108,77,224,.6) 74%,rgba(25,227,166,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:9px;}
.footer-brand .brand-text{font-size:15.5px;font-weight:700;}
.footer-col p{
  font-size:14px;
  color:var(--mk-muted);
  max-width:320px;
  margin:0;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--mk-text);
  margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a,
.footer-col ul li span{
  font-size:14px;
  color:var(--mk-muted);
}
.footer-col ul li a:hover{color:var(--mk-primary);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:52px;
  padding-top:24px;
  border-top:1px solid var(--mk-line);
  font-size:13px;
  color:var(--mk-dim);
}
.footer-bottom a{color:var(--mk-muted);}
.footer-bottom a:hover{color:var(--mk-primary);}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .32s var(--mk-ease),transform .32s var(--mk-ease);
}
.reveal.is-visible{opacity:1;transform:translateY(0);}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* ---------- responsive: 992-1199 ---------- */
@media (max-width:1199.98px){
  .nav-shell{gap:20px;}
  .nav-link{padding:9px 11px;font-size:14.5px;}
  .nav-link::after{left:11px;right:11px;}
  .zig{gap:44px;}
  .cta-panel{padding:44px;}
}

/* ---------- responsive: 768-991 ---------- */
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-links{
    position:fixed;
    top:70px;
    left:0;right:0;bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:26px 24px 40px;
    background:rgba(10,11,13,.99);
    border-top:1px solid var(--mk-line);
    transform:translateX(-100%);
    transition:transform .22s var(--mk-ease);
    overflow-y:auto;
  }
  .site-header.nav-open .nav-links{transform:translateX(0);}
  .nav-link{
    padding:15px 16px;
    font-size:16px;
    border-left:3px solid transparent;
    border-radius:8px;
  }
  .nav-link::after{display:none;}
  .nav-link.active{
    border-left-color:var(--mk-primary);
    background:rgba(25,227,166,.06);
  }
  .section{padding:80px 0;}
  .section-tight{padding:64px 0;}
  .page-hero{padding:76px 0 68px;}
  .zig{grid-template-columns:1fr;gap:32px;padding:44px 0;}
  .zig.reverse .zig-media{order:0;}
  .zig.reverse .zig-text{order:1;}
  .zig-index{top:-12px;left:-8px;width:44px;height:44px;font-size:15px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .link-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .line-item{grid-template-columns:48px 1fr;gap:16px;}
  .line-tags{grid-column:2;justify-content:flex-start;}
}

/* ---------- responsive: 576-767 ---------- */
@media (max-width:767.98px){
  body{font-size:16px;}
  .mk-container{padding:0 20px;}
  .hero-points{gap:16px 32px;}
  .hero-point strong{font-size:1.3rem;}
  .section{padding:64px 0;}
  .section-tight{padding:56px 0;}
  .section-head{margin-bottom:36px;}
  .cta-panel{padding:32px 24px;border-radius:18px;}
  .cta-form{flex-direction:column;}
  .cta-form input{flex:1 1 auto;width:100%;}
  .cta-form .btn-mk{width:100%;}
  .link-grid{grid-template-columns:1fr;}
  .claim-inner{padding:22px 0;}
}

/* ---------- responsive: <576 ---------- */
@media (max-width:575.98px){
  .mk-container{padding:0 16px;}
  .brand-text{font-size:15px;}
  .page-hero{padding:56px 0 56px;}
  .hero-actions .btn-mk{width:100%;}
  .hero-points{gap:14px 24px;padding-top:22px;}
  .stats-grid{grid-template-columns:1fr;}
  .stat-item{border-left:0;padding-left:0;padding-right:0;border-top:1px solid var(--mk-line);}
  .stat-item:first-child{border-top:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mk-accordion .accordion-button{padding:16px 18px;font-size:15.5px;}
  .mk-accordion .accordion-body{padding:0 18px 20px;}
  .line-item{padding:20px 6px;}
}

/* roulang page: category3 */
:root{
  --bs-primary:#19E3A6;
  --bs-body-bg:#0A0B0D;
  --bs-body-color:#E6E8EB;
  --bs-border-color:#262A31;
  --bs-border-radius:10px;
  --bs-link-color:#19E3A6;
  --bs-link-hover-color:#5CF0C4;
  --mk-bg:#0A0B0D;
  --mk-surface:#101216;
  --mk-card:#1A1D22;
  --mk-line:#262A31;
  --mk-text:#E6E8EB;
  --mk-muted:#98A0AA;
  --mk-dim:#6B7280;
  --mk-primary:#19E3A6;
  --mk-primary-soft:rgba(25,227,166,.08);
  --mk-secondary:#6C4DE0;
  --mk-light:#F4F5F3;
  --mk-light-text:#0F1113;
  --mk-r-card:16px;
  --mk-r-btn:10px;
  --mk-r-img:14px;
  --mk-glow:0 0 0 1px rgba(25,227,166,.18), 0 18px 40px rgba(25,227,166,.10);
  --mk-ease:cubic-bezier(.22,.61,.36,1);
  --mk-font:"PingFang SC","HarmonyOS Sans","MiSans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--mk-bg);
  color:var(--mk-text);
  font-family:var(--mk-font);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--mk-primary);text-decoration:none;transition:color .2s var(--mk-ease)}
a:hover{color:#5CF0C4}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--mk-text);letter-spacing:.01em}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--mk-primary);outline-offset:2px;border-radius:4px}

.mk-container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.mk-section{padding:104px 0}
.mk-section--tight{padding:72px 0}
.mk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--mk-primary);
  text-transform:uppercase;font-weight:600;margin-bottom:16px;
}
.mk-eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--mk-primary),transparent)}
.section-head{margin-bottom:44px;max-width:760px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.3;margin-bottom:14px}
.section-head p{color:var(--mk-muted);margin:0;font-size:16px}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(10,11,13,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--mk-line);
  transition:background .25s var(--mk-ease),border-color .25s var(--mk-ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,166,.7),rgba(108,77,224,.5),transparent);
  pointer-events:none;
}
.site-header.scrolled{background:rgba(8,9,11,.96);border-bottom-color:rgba(25,227,166,.22)}
.header-inner{display:flex;align-items:center;gap:26px;height:70px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--mk-text)}
.brand:hover{color:var(--mk-text)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(25,227,166,.18),rgba(108,77,224,.18));
  border:1px solid rgba(25,227,166,.35);
  box-shadow:0 0 18px rgba(25,227,166,.18);
}
.brand-mark svg{width:18px;height:18px;fill:var(--mk-primary)}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--mk-primary)}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:8px;
  font-size:15px;color:var(--mk-muted);font-weight:500;
  transition:color .2s var(--mk-ease),background .2s var(--mk-ease);
}
.nav-link:hover{color:var(--mk-text);background:rgba(255,255,255,.04)}
.nav-link.active{color:var(--mk-primary);text-shadow:0 0 14px rgba(25,227,166,.45)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--mk-primary);box-shadow:0 0 12px rgba(25,227,166,.8);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:transparent;border:1px solid var(--mk-line);color:var(--mk-text);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(25,227,166,.45);color:var(--mk-primary)}

/* ===== 按钮 ===== */
.btn-mk-primary,.btn-mk-ghost,.btn-mk-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--mk-r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--mk-ease),box-shadow .2s var(--mk-ease),background .2s var(--mk-ease),color .2s var(--mk-ease),border-color .2s var(--mk-ease);
  white-space:nowrap;
}
.btn-mk-primary{background:var(--mk-primary);color:#07110D;box-shadow:0 0 0 1px rgba(25,227,166,.25)}
.btn-mk-primary:hover{background:#2CEBAF;color:#07110D;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,227,166,.4),0 14px 34px rgba(25,227,166,.26)}
.btn-mk-primary:active{transform:translateY(0)}
.btn-mk-soft{background:rgba(25,227,166,.12);color:var(--mk-primary);border-color:rgba(25,227,166,.3)}
.btn-mk-soft:hover{background:rgba(25,227,166,.2);color:#5CF0C4;transform:translateY(-2px)}
.btn-mk-ghost{background:transparent;color:var(--mk-text);border-color:var(--mk-line)}
.btn-mk-ghost:hover{border-color:rgba(25,227,166,.6);color:var(--mk-primary);transform:translateY(-2px)}
.btn-mk-sm{padding:10px 16px;font-size:14px}

/* ===== 徽章 ===== */
.badge-mk{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  color:var(--mk-primary);background:var(--mk-primary-soft);
  border:1px solid rgba(25,227,166,.28);
}
.badge-mk--muted{color:var(--mk-muted);background:rgba(255,255,255,.04);border-color:var(--mk-line)}

/* ===== Hero ===== */
.page-hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--mk-line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(10,11,13,.92) 8%,rgba(10,11,13,.78) 48%,rgba(10,11,13,.9) 100%);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,166,.6),transparent);
}
.page-hero .hero-inner{position:relative;z-index:2;padding:92px 0 84px;max-width:760px}
.hero-breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--mk-dim);margin-bottom:20px;
}
.hero-breadcrumb a{color:var(--mk-muted)}
.hero-breadcrumb a:hover{color:var(--mk-primary)}
.hero-breadcrumb .sep{color:var(--mk-line)}
.hero-breadcrumb .current{color:var(--mk-primary)}
.page-hero h1{
  font-size:clamp(2.2rem,5.2vw,3.6rem);
  font-weight:800;line-height:1.18;margin:16px 0 18px;
}
.page-hero .hero-sub{font-size:17px;color:var(--mk-muted);max-width:620px;margin-bottom:30px}
.hero-search{max-width:560px}
.hero-search .search-field{
  display:flex;align-items:center;gap:10px;
  background:rgba(26,29,34,.9);border:1px solid var(--mk-line);
  border-radius:12px;padding:6px 8px 6px 16px;
  transition:border-color .2s var(--mk-ease),box-shadow .2s var(--mk-ease);
}
.hero-search .search-field:focus-within{border-color:rgba(25,227,166,.6);box-shadow:0 0 0 4px rgba(25,227,166,.10)}
.hero-search i{color:var(--mk-dim);font-size:15px}
.hero-search input{
  flex:1;background:transparent;border:0;outline:none;color:var(--mk-text);
  font-size:15px;padding:10px 0;
}
.hero-search input::placeholder{color:var(--mk-dim)}
.hero-search .btn-mk-primary{padding:11px 18px}
.hero-hint{margin:14px 0 0;font-size:13.5px;color:var(--mk-dim)}
.hero-points{
  display:flex;flex-wrap:wrap;gap:28px;
  margin-top:38px;padding-top:26px;border-top:1px solid rgba(38,42,49,.9);
}
.hero-points div{display:flex;align-items:baseline;gap:8px;font-size:14px;color:var(--mk-muted)}
.hero-points b{font-size:20px;font-weight:700;color:var(--mk-primary);font-variant-numeric:tabular-nums}

/* ===== 快捷入口 ===== */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.quick-card{
  display:flex;flex-direction:column;gap:12px;
  padding:24px 22px;border-radius:var(--mk-r-card);
  background:var(--mk-card);border:1px solid var(--mk-line);
  transition:transform .22s var(--mk-ease),border-color .22s var(--mk-ease),box-shadow .22s var(--mk-ease);
}
.quick-card:hover{transform:translateY(-3px);border-color:rgba(25,227,166,.4);box-shadow:var(--mk-glow)}
.quick-card .qc-icon{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:rgba(25,227,166,.10);border:1px solid rgba(25,227,166,.24);color:var(--mk-primary);
  font-size:16px;
}
.quick-card h3{font-size:17px;font-weight:700}
.quick-card p{margin:0;font-size:14.5px;color:var(--mk-muted);line-height:1.7}
.quick-card .qc-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--mk-primary)}
.quick-card.is-current{border-color:rgba(25,227,166,.45);box-shadow:0 0 0 1px rgba(25,227,166,.18) inset}

/* ===== 帮助主体 ===== */
.help-banner{
  border-radius:var(--mk-r-card);overflow:hidden;
  border:1px solid var(--mk-line);margin-bottom:48px;position:relative;
}
.help-banner img{
  width:100%;height:260px;object-fit:cover;
  filter:saturate(.9) contrast(1.05);
}
.help-banner .hb-caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:22px 26px;
  background:linear-gradient(180deg,rgba(10,11,13,0) 0%,rgba(10,11,13,.92) 72%);
}
.help-banner .hb-caption h3{font-size:18px;margin-bottom:6px}
.help-banner .hb-caption p{margin:0;font-size:14px;color:var(--mk-muted)}

.help-layout{display:grid;grid-template-columns:266px minmax(0,1fr);gap:44px;align-items:start}
.help-toc{position:sticky;top:98px}
.toc-panel{
  border:1px solid var(--mk-line);border-radius:var(--mk-r-card);
  background:var(--mk-surface);padding:22px 18px;
}
.toc-panel h3{font-size:14px;letter-spacing:.08em;color:var(--mk-dim);text-transform:uppercase;margin-bottom:14px}
.toc-link{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:9px;margin-bottom:4px;
  font-size:15px;color:var(--mk-muted);border-left:3px solid transparent;
  transition:background .2s var(--mk-ease),color .2s var(--mk-ease),border-color .2s var(--mk-ease);
}
.toc-link .toc-num{
  font-size:12px;font-weight:700;color:var(--mk-dim);font-variant-numeric:tabular-nums;
}
.toc-link:hover{background:rgba(255,255,255,.04);color:var(--mk-text)}
.toc-link.active{
  color:var(--mk-primary);background:rgba(25,227,166,.07);
  border-left-color:var(--mk-primary);
}
.toc-link.active .toc-num{color:var(--mk-primary)}
.toc-tip{margin-top:16px;padding-top:16px;border-top:1px solid var(--mk-line);font-size:13px;color:var(--mk-dim);line-height:1.7}

.faq-group{margin-bottom:52px;scroll-margin-top:96px}
.faq-group:last-child{margin-bottom:0}
.faq-group > h2{
  display:flex;align-items:center;gap:12px;
  font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;margin-bottom:8px;
}
.faq-group > h2::before{
  content:"";width:3px;height:24px;border-radius:3px;
  background:var(--mk-primary);box-shadow:0 0 12px rgba(25,227,166,.7);
}
.faq-group > .group-desc{color:var(--mk-muted);font-size:15px;margin:0 0 22px 15px}

.mk-accordion .accordion-item{
  background:var(--mk-card);border:1px solid var(--mk-line);
  border-radius:14px;margin-bottom:12px;overflow:hidden;
  transition:border-color .22s var(--mk-ease),box-shadow .22s var(--mk-ease);
}
.mk-accordion .accordion-item:hover{border-color:rgba(25,227,166,.28)}
.mk-accordion .accordion-button{
  background:transparent;color:var(--mk-text);
  font-size:16.5px;font-weight:600;line-height:1.6;
  padding:18px 52px 18px 20px;box-shadow:none;
}
.mk-accordion .accordion-button:focus{box-shadow:none;outline:none}
.mk-accordion .accordion-button:focus-visible{outline:2px solid var(--mk-primary);outline-offset:-4px}
.mk-accordion .accordion-button:not(.collapsed){
  color:var(--mk-primary);background:rgba(25,227,166,.05);
  box-shadow:inset 3px 0 0 var(--mk-primary);
}
.mk-accordion .accordion-button::after{
  width:9px;height:9px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  background-image:none;transform:rotate(45deg);margin-top:-4px;
  transition:transform .25s var(--mk-ease);opacity:.75;
}
.mk-accordion .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:4px;opacity:1}
.mk-accordion .accordion-body{
  padding:4px 22px 22px 20px;color:var(--mk-muted);font-size:15.5px;line-height:1.85;
}
.mk-accordion .accordion-body p:last-child{margin-bottom:0}
.mk-accordion .accordion-body strong{color:var(--mk-text);font-weight:600}
.mk-accordion .accordion-body ul{list-style:none;margin:10px 0 0}
.mk-accordion .accordion-body ul li{
  position:relative;padding-left:16px;margin-bottom:6px;font-size:15px;
}
.mk-accordion .accordion-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;border-radius:50%;
  background:var(--mk-primary);opacity:.7;
}
.faq-empty{
  display:none;text-align:center;padding:56px 24px;
  border:1px dashed var(--mk-line);border-radius:var(--mk-r-card);
  background:rgba(26,29,34,.5);
}
.faq-empty i{font-size:22px;color:var(--mk-dim);display:block;margin-bottom:14px}
.faq-empty p{color:var(--mk-muted);margin:0 0 14px}

/* ===== 自助排查 ===== */
.check-list{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;background:var(--mk-line);
  border:1px solid var(--mk-line);border-radius:var(--mk-r-card);overflow:hidden;
}
.check-item{
  display:flex;gap:18px;padding:26px 26px;background:var(--mk-surface);
  transition:background .22s var(--mk-ease);
}
.check-item:hover{background:#14171C}
.check-num{
  flex-shrink:0;width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;font-weight:700;font-size:15px;
  color:var(--mk-primary);background:rgba(25,227,166,.10);
  border:1px solid rgba(25,227,166,.26);font-variant-numeric:tabular-nums;
}
.check-item h3{font-size:16.5px;font-weight:600;margin-bottom:6px}
.check-item p{margin:0;font-size:14.5px;color:var(--mk-muted);line-height:1.75}

/* ===== CTA ===== */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid rgba(25,227,166,.22);
  background-image:url('/assets/images/coverpic/cover-8.png');
  background-size:cover;background-position:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,11,13,.95) 12%,rgba(10,11,13,.82) 60%,rgba(16,18,22,.9) 100%);
}
.cta-inner{position:relative;z-index:2;padding:56px 52px;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;margin-bottom:14px}
.cta-inner p{color:var(--mk-muted);margin:0;font-size:15.5px}
.subscribe-form{display:flex;gap:10px;margin-bottom:12px}
.subscribe-form input{
  flex:1;min-width:0;background:rgba(10,11,13,.72);border:1px solid var(--mk-line);
  border-radius:var(--mk-r-btn);padding:13px 16px;color:var(--mk-text);font-size:15px;
  transition:border-color .2s var(--mk-ease),box-shadow .2s var(--mk-ease);
}
.subscribe-form input::placeholder{color:var(--mk-dim)}
.subscribe-form input:focus{outline:none;border-color:rgba(25,227,166,.65);box-shadow:0 0 0 4px rgba(25,227,166,.10)}
.form-note{font-size:13px;color:var(--mk-dim);margin:0}

/* ===== 相关板块内链 ===== */
.link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.link-row{
  display:flex;align-items:center;gap:16px;
  padding:22px 22px;border-radius:var(--mk-r-card);
  background:var(--mk-card);border:1px solid var(--mk-line);
  transition:transform .22s var(--mk-ease),border-color .22s var(--mk-ease),box-shadow .22s var(--mk-ease);
}
.link-row:hover{transform:translateY(-3px);border-color:rgba(25,227,166,.4);box-shadow:var(--mk-glow)}
.link-row .lr-body{min-width:0}
.link-row h3{font-size:16px;font-weight:600;margin-bottom:4px;color:var(--mk-text)}
.link-row p{margin:0;font-size:14px;color:var(--mk-muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.link-row i{margin-left:auto;color:var(--mk-dim);transition:color .2s var(--mk-ease),transform .2s var(--mk-ease)}
.link-row:hover i{color:var(--mk-primary);transform:translateX(3px)}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:0;padding:72px 0 34px;
  background:var(--mk-surface);
  border-top:1px solid var(--mk-line);position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,166,.65),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:32px;height:32px}
.footer-brand .brand-text{font-size:16px;font-weight:700}
.footer-col p{color:var(--mk-muted);font-size:14.5px;line-height:1.8;margin:0}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--mk-text);margin-bottom:16px;font-weight:600}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a,.footer-col ul li span{font-size:14.5px;color:var(--mk-muted)}
.footer-col ul li a:hover{color:var(--mk-primary)}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding-top:24px;border-top:1px solid var(--mk-line);
  font-size:13.5px;color:var(--mk-dim);
}
.footer-bottom a{color:var(--mk-muted)}
.footer-bottom a:hover{color:var(--mk-primary)}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .3s var(--mk-ease),transform .3s var(--mk-ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .mk-container{padding:0 22px}
  .help-layout{grid-template-columns:230px minmax(0,1fr);gap:32px}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:48px 36px}
}
@media (max-width:991.98px){
  .mk-section{padding:80px 0}
  .mk-section--tight{padding:60px 0}
  .nav-links{
    position:fixed;top:70px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#0C0E11;border-bottom:1px solid var(--mk-line);
    padding:12px 20px 26px;
    max-height:calc(100vh - 70px);overflow-y:auto;
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .2s var(--mk-ease),transform .2s var(--mk-ease);
  }
  .nav-links.open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-link{padding:15px 12px;border-left:3px solid transparent;font-size:16px;border-radius:0}
  .nav-link.active{background:rgba(25,227,166,.06);border-left-color:var(--mk-primary)}
  .nav-link.active::after{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-mk-primary{display:none}
  .help-layout{grid-template-columns:1fr;gap:28px}
  .help-toc{position:static}
  .toc-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px}
  .toc-panel h3,.toc-tip{grid-column:1/-1}
  .check-list{grid-template-columns:1fr}
  .link-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .help-banner img{height:210px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .mk-section{padding:64px 0}
  .page-hero .hero-inner{padding:70px 0 62px}
  .hero-points{gap:18px;margin-top:30px}
  .quick-grid{grid-template-columns:1fr}
  .mk-accordion .accordion-button{font-size:15.5px;padding:16px 46px 16px 16px}
  .mk-accordion .accordion-body{padding:2px 18px 20px 16px}
  .cta-inner{padding:38px 24px}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn-mk-primary{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:575.98px){
  .mk-container{padding:0 20px}
  .brand-text{font-size:15.5px}
  .page-hero h1{font-size:clamp(1.9rem,8vw,2.4rem)}
  .toc-panel{grid-template-columns:1fr}
  .help-banner img{height:170px}
  .footer-bottom{font-size:12.5px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --mk-bg:#0A0B0D;
  --mk-panel:#101216;
  --mk-card:#1A1D22;
  --mk-card-2:#14171B;
  --mk-line:#262A31;
  --mk-text:#E6E8EB;
  --mk-muted:#98A0AA;
  --mk-dim:#6B7280;
  --mk-primary:#19E3A6;
  --mk-primary-soft:rgba(25,227,166,.10);
  --mk-primary-line:rgba(25,227,166,.36);
  --mk-secondary:#6C4DE0;
  --mk-radius:16px;
  --mk-radius-sm:10px;
  --mk-shadow:0 22px 46px -28px rgba(25,227,166,.42);
  --mk-section:104px;

  --bs-body-bg:#0A0B0D;
  --bs-body-color:#E6E8EB;
  --bs-border-color:#262A31;
  --bs-border-radius:16px;
  --bs-border-radius-sm:10px;
  --bs-primary:#19E3A6;
  --bs-primary-rgb:25,227,166;
  --bs-link-color:#19E3A6;
  --bs-link-hover-color:#5BF0C1;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","MiSans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--mk-bg);
  color:var(--mk-text);
  font-family:var(--bs-font-sans-serif);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--mk-primary);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#5BF0C1}
h1,h2,h3,h4{margin:0;color:var(--mk-text);font-weight:700;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--mk-primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(25,227,166,.28);color:#fff}

.mk-container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.mk-section{padding:var(--mk-section) 0}
.mk-section--tight{padding:64px 0}
.mk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--mk-primary);
  text-transform:uppercase;font-weight:600;
}
.mk-eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--mk-primary),transparent)}
.mk-h2{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.3;margin:14px 0 0}
.mk-lead{color:var(--mk-muted);font-size:16px;max-width:760px;margin-top:14px}
.mk-head{margin-bottom:48px}
.mk-head--split{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px}

/* ============ 导航 ============ */
.mk-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(10,11,13,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.mk-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--mk-primary),var(--mk-secondary),transparent);
  opacity:.55;
}
.mk-header.is-scrolled{background:rgba(8,9,11,.96);border-bottom-color:var(--mk-line)}
.mk-nav-inner{display:flex;align-items:center;gap:28px;min-height:70px}
.mk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--mk-text);font-weight:700;flex-shrink:0}
.mk-logo:hover{color:var(--mk-text)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(25,227,166,.22),rgba(108,77,224,.28));
  border:1px solid var(--mk-primary-line);
  box-shadow:0 0 18px -6px rgba(25,227,166,.6);
}
.brand-mark svg{width:18px;height:18px;fill:var(--mk-primary)}
.brand-text{font-size:17px;letter-spacing:.03em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:var(--mk-radius-sm);
  color:var(--mk-muted);font-size:15px;font-weight:500;white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--mk-primary);transform:scaleX(0);transform-origin:left;transition:transform .24s cubic-bezier(.22,.61,.36,1);
}
.nav-link:hover{color:var(--mk-text);background:rgba(255,255,255,.03)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--mk-primary);background:var(--mk-primary-soft);text-shadow:0 0 14px rgba(25,227,166,.45)}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(25,227,166,.7)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--mk-radius-sm);
  border:1px solid var(--mk-line);background:transparent;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--mk-text);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{font-weight:600;letter-spacing:.02em;transition:all .22s cubic-bezier(.22,.61,.36,1)}
.btn-mk-primary,.btn-mk-ghost,.btn-mk-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--mk-radius-sm);font-size:15px;line-height:1.4;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
}
.btn-mk-primary{
  background:var(--mk-primary);color:#06231A;
  box-shadow:0 12px 30px -14px rgba(25,227,166,.85);
}
.btn-mk-primary:hover{background:#33EBb4;color:#06231A;transform:translateY(-2px);box-shadow:0 18px 36px -14px rgba(25,227,166,.95)}
.btn-mk-primary:active{transform:translateY(0)}
.btn-mk-outline{background:transparent;color:var(--mk-primary);border-color:var(--mk-primary-line)}
.btn-mk-outline:hover{background:var(--mk-primary-soft);color:var(--mk-primary);transform:translateY(-2px)}
.btn-mk-ghost{background:transparent;color:var(--mk-text);border-color:var(--mk-line)}
.btn-mk-ghost:hover{border-color:var(--mk-primary-line);color:var(--mk-primary);transform:translateY(-2px)}
.btn-mk-sm{padding:9px 18px;font-size:14px}

/* ============ Hero ============ */
.mk-hero{
  position:relative;isolation:isolate;overflow:hidden;
  padding:120px 0 88px;
  background-image:
    linear-gradient(100deg,rgba(8,9,11,.88) 0%,rgba(8,9,11,.78) 45%,rgba(8,9,11,.92) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--mk-line);
}
.mk-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,var(--mk-primary-line),transparent);
}
.hero-inner{max-width:760px}
.mk-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--mk-dim);margin-bottom:22px}
.mk-breadcrumb a{color:var(--mk-muted)}
.mk-breadcrumb a:hover{color:var(--mk-primary)}
.mk-breadcrumb .sep{color:var(--mk-line)}
.mk-breadcrumb .current{color:var(--mk-primary)}
.mk-hero h1{
  font-size:clamp(2.2rem,5.2vw,4rem);line-height:1.16;font-weight:800;letter-spacing:.01em;
  margin:18px 0 20px;
}
.mk-hero h1 em{font-style:normal;color:var(--mk-primary)}
.hero-sub{font-size:17px;color:var(--mk-muted);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-meta{display:flex;flex-wrap:wrap;gap:34px;margin-top:52px;padding-top:26px;border-top:1px solid var(--mk-line)}
.hero-meta-item{min-width:120px}
.hero-meta-item b{display:block;font-size:20px;font-weight:700;color:var(--mk-text);font-variant-numeric:tabular-nums}
.hero-meta-item span{font-size:13.5px;color:var(--mk-dim)}

/* ============ 概览数据块 ============ */
.overview-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ov-card{
  padding:26px 24px;border-radius:var(--mk-radius);border:1px solid var(--mk-line);
  background:linear-gradient(180deg,var(--mk-card) 0%,var(--mk-card-2) 100%);
  transition:transform .24s cubic-bezier(.22,.61,.36,1),border-color .24s ease,box-shadow .24s ease;
}
.ov-card:hover{transform:translateY(-3px);border-color:var(--mk-primary-line);box-shadow:var(--mk-shadow)}
.ov-index{font-size:13px;font-weight:700;letter-spacing:.2em;color:var(--mk-primary);font-variant-numeric:tabular-nums}
.ov-card h3{font-size:18px;margin:14px 0 10px}
.ov-card p{font-size:14.5px;color:var(--mk-muted);line-height:1.8}

/* ============ 时间线 ============ */
.tl-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.chip{
  display:inline-flex;align-items:center;padding:7px 15px;border-radius:999px;
  font-size:13.5px;color:var(--mk-muted);border:1px solid var(--mk-line);background:rgba(255,255,255,.02);
}
.chip.is-active{color:var(--mk-primary);border-color:var(--mk-primary-line);background:var(--mk-primary-soft)}
.timeline{position:relative;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:96px;top:12px;bottom:12px;width:1px;
  background:linear-gradient(180deg,transparent,var(--mk-line) 8%,var(--mk-line) 92%,transparent);
}
.tl-item{position:relative;display:grid;grid-template-columns:96px 1fr;gap:40px;padding:0 0 34px}
.tl-item:last-child{padding-bottom:0}
.tl-time{padding-top:26px;text-align:right;font-variant-numeric:tabular-nums}
.tl-time b{display:block;font-size:19px;font-weight:700;color:var(--mk-text);letter-spacing:.02em}
.tl-time span{font-size:13px;color:var(--mk-dim)}
.tl-item::before{
  content:"";position:absolute;left:90px;top:32px;width:13px;height:13px;border-radius:50%;
  background:var(--mk-bg);border:2px solid var(--mk-primary-line);z-index:2;
  box-shadow:0 0 0 4px rgba(25,227,166,.08);
}
.tl-item:hover::before{border-color:var(--mk-primary);box-shadow:0 0 14px rgba(25,227,166,.55)}
.tl-card{
  display:grid;grid-template-columns:1fr 208px;gap:26px;align-items:center;
  padding:24px;border-radius:var(--mk-radius);border:1px solid var(--mk-line);background:var(--mk-card);
  transition:transform .24s cubic-bezier(.22,.61,.36,1),border-color .24s ease,box-shadow .24s ease;
}
.tl-card:hover{transform:translateY(-3px);border-color:var(--mk-primary-line);box-shadow:var(--mk-shadow)}
.badge-mk{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:var(--mk-primary);border:1px solid var(--mk-primary-line);background:var(--mk-primary-soft);
}
.tl-card h3{font-size:19px;line-height:1.5;margin:14px 0 10px}
.tl-card h3 a{color:var(--mk-text)}
.tl-card h3 a:hover{color:var(--mk-primary)}
.tl-card p{font-size:14.8px;color:var(--mk-muted);line-height:1.82}
.tl-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600}
.tl-link::after{content:"→";transition:transform .2s ease}
.tl-link:hover::after{transform:translateX(4px)}
.tl-thumb{
  border-radius:14px;overflow:hidden;aspect-ratio:16/10;border:1px solid var(--mk-line);
}
.tl-thumb img{width:100%;height:100%;object-fit:cover;filter:saturate(.9) contrast(1.05);transition:transform .35s cubic-bezier(.22,.61,.36,1),filter .35s ease}
.tl-card:hover .tl-thumb img{transform:scale(1.03);filter:saturate(.95) contrast(1.06) brightness(1.04)}

/* ============ 订阅 CTA ============ */
.cta-band{
  position:relative;border-radius:22px;border:1px solid var(--mk-line);overflow:hidden;
  background-image:
    linear-gradient(115deg,rgba(10,11,13,.94) 0%,rgba(10,11,13,.82) 55%,rgba(16,18,22,.94) 100%),
    url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  padding:52px 48px;
}
.cta-band::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,transparent,var(--mk-primary),transparent);
}
.cta-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center}
.cta-band h2{font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.34}
.cta-band p{color:var(--mk-muted);font-size:15px;margin-top:12px}
.sub-form{display:flex;gap:12px}
.form-control{
  background:#0E1014;border:1px solid var(--mk-line);color:var(--mk-text);
  border-radius:var(--mk-radius-sm);padding:13px 16px;font-size:15px;height:auto;
}
.form-control::placeholder{color:var(--mk-dim)}
.form-control:focus{
  background:#0E1014;border-color:var(--mk-primary);color:var(--mk-text);
  box-shadow:0 0 0 3px rgba(25,227,166,.14);
}
.form-note{font-size:13px;color:var(--mk-dim);margin-top:12px}

/* ============ FAQ ============ */
.accordion{--bs-accordion-bg:transparent;--bs-accordion-color:var(--mk-text);--bs-accordion-border-color:var(--mk-line);
  --bs-accordion-btn-color:var(--mk-text);--bs-accordion-active-color:var(--mk-primary);--bs-accordion-active-bg:transparent;
  --bs-accordion-btn-focus-box-shadow:none;--bs-accordion-border-radius:14px;--bs-accordion-inner-border-radius:14px;}
.accordion-item{
  background:var(--mk-card-2);border:1px solid var(--mk-line);border-radius:14px !important;
  margin-bottom:12px;overflow:hidden;
}
.accordion-item:hover{border-color:#333944}
.accordion-button{
  background:transparent;color:var(--mk-text);font-size:16.5px;font-weight:600;padding:19px 22px;line-height:1.6;
}
.accordion-button:not(.collapsed){
  color:var(--mk-primary);
  background:linear-gradient(90deg,rgba(25,227,166,.08),transparent 65%);
  box-shadow:inset 3px 0 0 var(--mk-primary);
}
.accordion-button::after{filter:invert(72%) sepia(46%) saturate(720%) hue-rotate(105deg)}
.accordion-body{padding:2px 22px 22px;color:var(--mk-muted);font-size:15px;line-height:1.86}

/* ============ 内链区 ============ */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.link-card{
  display:flex;flex-direction:column;gap:10px;padding:26px 24px;border-radius:var(--mk-radius);
  border:1px dashed var(--mk-line);background:rgba(255,255,255,.015);
  transition:border-color .24s ease,transform .24s cubic-bezier(.22,.61,.36,1),background .24s ease;
}
.link-card:hover{border-color:var(--mk-primary-line);background:var(--mk-primary-soft);transform:translateY(-3px)}
.link-card h3{font-size:17.5px}
.link-card p{font-size:14.4px;color:var(--mk-muted);line-height:1.8}
.link-card span{font-size:13.5px;font-weight:600;color:var(--mk-primary);margin-top:auto}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--mk-section);border-top:1px solid var(--mk-line);
  background:linear-gradient(180deg,var(--mk-panel) 0%,#08090B 100%);
  position:relative;padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--mk-primary-line),var(--mk-secondary),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{font-size:16.5px;font-weight:700}
.footer-col p{font-size:14.2px;color:var(--mk-muted);line-height:1.85;max-width:330px}
.footer-col h4{font-size:14.5px;color:var(--mk-text);letter-spacing:.06em;margin-bottom:16px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a,.footer-col ul li span{font-size:14.2px;color:var(--mk-muted)}
.footer-col ul li a:hover{color:var(--mk-primary)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--mk-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.2px;color:var(--mk-dim);
}
.footer-bottom a{color:var(--mk-muted)}
.footer-bottom a:hover{color:var(--mk-primary)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s cubic-bezier(.22,.61,.36,1),transform .32s cubic-bezier(.22,.61,.36,1)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--mk-section:88px}
  .overview-grid{grid-template-columns:repeat(2,1fr)}
  .tl-card{grid-template-columns:1fr 176px;gap:22px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:991px){
  .mk-nav-inner{min-height:64px;gap:16px}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-mk-primary{display:none}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(8,9,11,.98);border-bottom:1px solid var(--mk-line);
    padding:14px 20px 22px;margin-left:0;
    box-shadow:0 24px 40px -26px rgba(0,0,0,.9);
    display:none;
  }
  .nav-links.is-open{display:flex;animation:mkDrop .22s cubic-bezier(.22,.61,.36,1)}
  @keyframes mkDrop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
  .nav-link{padding:13px 14px;font-size:15.5px}
  .nav-link::after{display:none}
  .nav-link.active{box-shadow:inset 3px 0 0 var(--mk-primary)}
  .cta-grid{grid-template-columns:1fr;gap:26px}
  .link-grid{grid-template-columns:1fr 1fr}
  .cta-band{padding:40px 30px}
}
@media (max-width:767px){
  :root{--mk-section:68px}
  body{font-size:16px}
  .mk-container{padding:0 20px}
  .mk-hero{padding:88px 0 64px}
  .hero-meta{gap:22px;margin-top:38px}
  .hero-meta-item{min-width:104px}
  .overview-grid{grid-template-columns:1fr}
  .timeline::before{left:8px}
  .tl-item{grid-template-columns:1fr;gap:14px;padding-left:30px;padding-bottom:26px}
  .tl-item::before{left:2px;top:26px}
  .tl-time{padding-top:0;text-align:left;display:flex;align-items:baseline;gap:8px}
  .tl-time b{font-size:16px}
  .tl-card{grid-template-columns:1fr;gap:18px}
  .tl-thumb{order:-1;aspect-ratio:16/9}
  .sub-form{flex-direction:column}
  .link-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col:last-child{grid-column:span 2}
  .footer-bottom{flex-direction:column;gap:8px}
  .mk-head--split{align-items:flex-start}
}
@media (max-width:575px){
  .mk-container{padding:0 16px}
  .brand-text{font-size:15.5px}
  .hero-actions .btn-mk-primary,.hero-actions .btn-mk-ghost{width:100%}
  .tl-card{padding:18px}
  .cta-band{padding:32px 20px;border-radius:18px}
  .accordion-button{font-size:15.5px;padding:16px 18px}
  .accordion-body{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr}
  .footer-col:last-child{grid-column:span 1}
}