:root{
  --yk-ink:#061A15;
  --yk-ink-2:#0C2A21;
  --yk-ink-3:#123A2C;
  --yk-line:#1F4E3E;
  --yk-cyan:#3BE8C8;
  --yk-orange:#FF7A2F;
  --yk-clay:#C27B54;
  --yk-moss:#7C9A63;
  --yk-cream:#F3EEE3;
  --yk-mist:#A9B4AC;
  --yk-stone:#6F7A73;
  --yk-font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --yk-font-mono:"JetBrains Mono","Noto Sans Mono CJK SC",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --yk-shell:1280px;
  --yk-gutter:32px;
  --yk-ease:cubic-bezier(.2,.7,.2,1);
}
@media (max-width:900px){:root{--yk-gutter:20px}}
@media (max-width:600px){:root{--yk-gutter:16px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
address{font-style:normal}
#main-content{display:block;scroll-margin-top:140px}
:focus-visible{outline:2px solid var(--yk-cyan);outline-offset:2px}

body{
  min-height:100vh;
  background-color:var(--yk-ink);
  background-image:
    repeating-linear-gradient(45deg,rgba(59,232,200,.045) 0 1px,transparent 1px 14px),
    linear-gradient(to right,rgba(31,78,62,.45) 0 1px,transparent 1px),
    linear-gradient(to bottom,rgba(31,78,62,.45) 0 1px,transparent 1px);
  background-size:auto,24px 24px,24px 24px;
  color:var(--yk-cream);
  font-family:var(--yk-font-sans);
  font-size:15px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--yk-cream)}

.yk-shell{width:100%;max-width:var(--yk-shell);margin-inline:auto;padding-inline:var(--yk-gutter)}
.yk-mono{font-family:var(--yk-font-mono);font-size:.92em;letter-spacing:.02em}

/* ===== 头部 ===== */
.yk-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,26,21,.96);
  border-bottom:1px solid var(--yk-line);
}
@media (min-width:901px){.yk-header{backdrop-filter:blur(8px)}}
.yk-skip{
  position:absolute;left:16px;top:-72px;z-index:99;
  padding:10px 18px;background:var(--yk-cyan);color:#05221B;
  font-weight:700;font-size:14px;
  transition:top .18s var(--yk-ease);
}
.yk-skip:focus{top:8px}

.yk-brandbar{
  background:var(--yk-ink-2);
  border-bottom:1px solid var(--yk-line);
  overflow:hidden;max-height:56px;opacity:1;
  transition:max-height .22s var(--yk-ease),opacity .22s var(--yk-ease);
}
.yk-header[data-condensed] .yk-brandbar{max-height:0;opacity:0;border-bottom-color:transparent}
.yk-brandbar__inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
  padding-block:9px;
  font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.02em;color:var(--yk-mist);
}
.yk-brandbar__id{display:flex;align-items:center;gap:9px;color:var(--yk-cream);white-space:nowrap}
.yk-mark{width:9px;height:9px;flex:none;background:var(--yk-cyan);box-shadow:5px 5px 0 rgba(255,122,47,.9)}
.yk-brandbar__status{display:flex;align-items:center;gap:8px;justify-self:center;white-space:nowrap}
.yk-pulse{
  width:6px;height:6px;flex:none;border-radius:50%;background:var(--yk-cyan);
  animation:yk-pulse 2.4s var(--yk-ease) infinite;
}
@keyframes yk-pulse{
  0%{box-shadow:0 0 0 0 rgba(59,232,200,.55)}
  70%{box-shadow:0 0 0 8px rgba(59,232,200,0)}
  100%{box-shadow:0 0 0 0 rgba(59,232,200,0)}
}
.yk-brandbar__search{justify-self:end;white-space:nowrap;border-bottom:1px dashed var(--yk-stone);padding-bottom:1px}
.yk-brandbar__search .yk-mono{color:var(--yk-clay)}

.yk-navbar{position:relative}
.yk-navbar__inner{
  display:flex;align-items:center;gap:20px;min-height:68px;
  transition:min-height .22s var(--yk-ease);
}
.yk-header[data-condensed] .yk-navbar__inner{min-height:54px}

.yk-brand{
  display:none;align-items:center;gap:10px;flex:none;
  font-size:17px;font-weight:900;letter-spacing:-.02em;color:var(--yk-cream);white-space:nowrap;
}
.yk-brand::before{content:"";width:10px;height:10px;flex:none;background:var(--yk-cyan);box-shadow:6px 6px 0 var(--yk-orange)}
@media (max-width:900px){.yk-brand{display:inline-flex}}
@media (min-width:901px){.yk-header[data-condensed] .yk-brand{display:inline-flex}}

.yk-nav{flex:1;display:flex;align-items:center;min-width:0}
.yk-nav__list{display:flex;align-items:center;flex-wrap:wrap}
.yk-nav__link{
  position:relative;display:block;padding:8px 12px;
  font-size:15px;font-weight:600;color:var(--yk-cream);white-space:nowrap;
  transition:color .16s var(--yk-ease),background-color .16s var(--yk-ease);
}
.yk-nav__link::before{
  content:attr(data-index);display:block;
  font-family:var(--yk-font-mono);font-size:10px;line-height:1.3;letter-spacing:.08em;
  color:var(--yk-stone);transition:color .16s var(--yk-ease);
}
.yk-nav__link:hover{color:var(--yk-cyan);background:rgba(31,78,62,.5)}
.yk-nav__link:hover::before{color:var(--yk-cyan)}
.yk-nav__link[aria-current="page"]{color:var(--yk-cyan)}
.yk-nav__link[aria-current="page"]::before{color:var(--yk-orange)}
.yk-nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--yk-cyan);
}

.yk-quickbar{display:none;align-items:center;gap:8px;margin-left:auto;padding-left:16px;border-left:1px solid var(--yk-line)}
.yk-quick{
  display:inline-flex;align-items:center;padding:5px 10px;white-space:nowrap;
  font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.02em;
  color:var(--yk-mist);background:rgba(18,58,44,.55);border:1px solid var(--yk-line);
  transition:color .16s var(--yk-ease),border-color .16s var(--yk-ease);
}
.yk-quick:hover{color:var(--yk-cyan);border-color:var(--yk-cyan)}
@media (min-width:1101px){.yk-header[data-condensed] .yk-quickbar{display:flex}}

.yk-navbar__cta{flex:none}
.yk-nav-toggle{
  display:none;align-items:center;gap:9px;flex:none;
  padding:9px 12px;background:var(--yk-ink-2);border:1px solid var(--yk-line);
  font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.06em;color:var(--yk-cream);
}
.yk-nav-toggle__bars{position:relative;width:16px;height:10px;flex:none}
.yk-nav-toggle__bars::before,.yk-nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--yk-cyan);
  transition:transform .2s var(--yk-ease);
}
.yk-nav-toggle__bars::before{top:0}
.yk-nav-toggle__bars::after{bottom:0}
.yk-nav-toggle[aria-expanded="true"] .yk-nav-toggle__bars::before{transform:translateY(4px) rotate(45deg)}
.yk-nav-toggle[aria-expanded="true"] .yk-nav-toggle__bars::after{transform:translateY(-4px) rotate(-45deg)}
.yk-nav-toggle__label{line-height:1}

.yk-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(31,78,62,.6);pointer-events:none}
.yk-progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--yk-cyan),var(--yk-orange))}

@media (max-width:900px){
  .yk-navbar__inner{gap:12px}
  .yk-nav-toggle{display:inline-flex}
  .yk-nav{
    position:absolute;top:100%;left:0;right:0;z-index:70;
    display:block;flex:none;min-width:0;
    background:var(--yk-ink-2);border-bottom:1px solid var(--yk-line);
    max-height:calc(100vh - 110px);overflow-y:auto;
    visibility:hidden;opacity:0;transform:translateY(-8px);
    transition:opacity .2s var(--yk-ease),transform .2s var(--yk-ease),visibility .2s var(--yk-ease);
  }
  .yk-nav[data-open]{visibility:visible;opacity:1;transform:none}
  .yk-nav__list{display:block}
  .yk-nav__link{display:flex;align-items:baseline;gap:14px;padding:14px 20px;font-size:17px;border-bottom:1px solid var(--yk-line)}
  .yk-nav__link::before{font-size:12px;line-height:1;color:var(--yk-cyan)}
  .yk-nav__link::after{display:none}
  .yk-nav__link[aria-current="page"]{background:rgba(59,232,200,.08);box-shadow:inset 3px 0 0 var(--yk-cyan)}
  .yk-nav[data-open] .yk-quickbar{
    display:flex;flex-direction:column;align-items:stretch;
    gap:0;margin:0;padding:0;border-left:0;
  }
  .yk-nav[data-open] .yk-quick{
    justify-content:flex-start;padding:14px 20px;font-size:13px;
    border:0;border-bottom:1px solid var(--yk-line);background:transparent;
  }
  .yk-navbar__cta{padding:9px 12px;font-size:12px}
  .yk-navbar__cta.yk-btn{letter-spacing:.02em}
}
@media (max-width:380px){
  .yk-nav-toggle__label{display:none}
}

/* ===== 页脚 ===== */
.yk-footer{
  position:relative;margin-top:120px;
  background:var(--yk-ink-2);border-top:1px solid var(--yk-line);
}
.yk-footer::before{
  content:"";position:absolute;inset:0 0 auto;height:3px;
  background:linear-gradient(90deg,var(--yk-cyan) 0 22%,var(--yk-orange) 22% 30%,transparent 30%);
}
.yk-footer .yk-shell{padding-block:64px 28px}
.yk-footer__top{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:48px;padding-bottom:36px;border-bottom:1px solid var(--yk-line);
}
.yk-footer__brandline{font-size:22px;font-weight:900;line-height:1.35;letter-spacing:-.02em;max-width:24ch}
.yk-footer__meta{margin-top:10px;font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.02em;color:var(--yk-clay)}
.yk-footer__list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px 24px}
.yk-footer__link{
  display:block;padding:8px 0;font-size:15px;color:var(--yk-mist);
  border-bottom:1px solid transparent;
  transition:color .16s var(--yk-ease),border-color .16s var(--yk-ease);
}
.yk-footer__link:hover{color:var(--yk-cyan);border-bottom-color:var(--yk-line)}
.yk-footer__contact{padding:28px 0;border-bottom:1px solid var(--yk-line)}
.yk-contact{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px 32px}
.yk-contact__row{display:flex;flex-direction:column;gap:5px;min-width:0}
.yk-contact__key{font-family:var(--yk-font-mono);font-size:11px;letter-spacing:.08em;color:var(--yk-stone)}
.yk-contact__val{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:15px;color:var(--yk-cream);word-break:break-all}
.yk-contact__note{display:block;font-size:13px;color:var(--yk-mist);line-height:1.7;max-width:46ch}
.yk-copy{
  flex:none;padding:3px 9px;background:rgba(18,58,44,.6);border:1px solid var(--yk-line);
  font-family:var(--yk-font-mono);font-size:11px;letter-spacing:.04em;color:var(--yk-mist);
  transition:color .16s var(--yk-ease),border-color .16s var(--yk-ease),background-color .16s var(--yk-ease);
}
.yk-copy:hover{color:var(--yk-cyan);border-color:var(--yk-cyan)}
.yk-copy[data-state="done"]{background:var(--yk-cyan);border-color:var(--yk-cyan);color:#05221B}
.yk-copy[data-state="error"]{background:rgba(255,122,47,.12);border-color:var(--yk-orange);color:var(--yk-orange)}
.yk-footer__bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;
  padding-top:22px;
  font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.02em;
}
.yk-footer__legal{color:var(--yk-mist)}
.yk-footer__icp{color:var(--yk-stone)}

@media (max-width:900px){
  .yk-footer{margin-top:72px}
  .yk-footer .yk-shell{padding-block:44px 24px}
  .yk-footer__top{grid-template-columns:1fr;gap:26px}
  .yk-contact{grid-template-columns:1fr;gap:16px}
}
@media (max-width:600px){
  .yk-footer__list{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ===== 通用组件 ===== */
.yk-section{padding-block:88px;border-top:1px solid var(--yk-line)}
.yk-section__head{margin-bottom:36px}
.yk-section__num{display:inline-block;margin-bottom:12px;font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.14em;color:var(--yk-cyan)}
.yk-section__title{font-size:clamp(26px,3.4vw,40px);font-weight:900;letter-spacing:-.03em;line-height:1.15;max-width:24ch}
.yk-lede{margin-top:14px;font-size:17px;line-height:1.7;color:var(--yk-mist);max-width:38ch}
.yk-rule{height:1px;border:0;margin:0;background:var(--yk-line)}
.yk-band{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  padding:12px 18px;background:var(--yk-ink-3);border-left:3px solid var(--yk-cyan);
  font-family:var(--yk-font-mono);font-size:13px;letter-spacing:.04em;color:var(--yk-cream);
}
.yk-note{
  padding:16px 18px;background:rgba(255,122,47,.06);
  border:1px solid var(--yk-line);border-left:3px solid var(--yk-orange);
  font-size:14px;line-height:1.75;color:var(--yk-mist);
}

.yk-prose{max-width:38em;font-size:16px;line-height:1.85;color:var(--yk-cream)}
.yk-prose p+p{margin-top:14px}
.yk-prose h2,.yk-prose h3{margin-top:32px;margin-bottom:12px}
.yk-prose h2{font-size:24px}
.yk-prose h3{font-size:19px}
.yk-prose ul,.yk-prose ol{margin-top:12px}
.yk-prose li{position:relative;padding-left:18px;margin-top:8px;color:var(--yk-mist)}
.yk-prose li::before{content:"";position:absolute;left:0;top:.78em;width:8px;height:1px;background:var(--yk-cyan)}
.yk-prose strong{color:var(--yk-cream);font-weight:700}
.yk-prose a{color:var(--yk-cyan);border-bottom:1px solid var(--yk-line)}
.yk-prose a:hover{border-bottom-color:var(--yk-cyan)}

.yk-list{margin-top:14px}
.yk-list li{position:relative;padding-left:18px;margin-top:8px;font-size:15px;color:var(--yk-mist)}
.yk-list li::before{content:"";position:absolute;left:0;top:.78em;width:8px;height:1px;background:var(--yk-cyan)}

.yk-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.yk-grid--split > .yk-col-main{grid-column:span 7}
.yk-grid--split > .yk-col-side{grid-column:span 4}
.yk-grid--halves > *{grid-column:span 6}
.yk-grid--thirds > *{grid-column:span 4}
@media (max-width:900px){
  .yk-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:16px}
  .yk-grid--split > .yk-col-main,
  .yk-grid--split > .yk-col-side,
  .yk-grid--halves > *,
  .yk-grid--thirds > *{grid-column:1 / -1}
}

.yk-card{position:relative;padding:22px;background:var(--yk-ink-2);border:1px solid var(--yk-line)}
.yk-card__title{font-size:17px;font-weight:700;letter-spacing:-.01em}
.yk-card__meta{font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.02em;color:var(--yk-mist)}
.yk-card--cut{clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%)}
.yk-card--stack{box-shadow:14px 14px 0 -1px var(--yk-ink-3),14px 14px 0 0 var(--yk-line)}

.yk-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;line-height:1;
  background:var(--yk-ink-3);border:1px solid var(--yk-line);color:var(--yk-cream);
  font-size:14px;font-weight:600;
  transition:background-color .16s var(--yk-ease),color .16s var(--yk-ease),border-color .16s var(--yk-ease);
}
.yk-btn:hover{background:var(--yk-line);border-color:var(--yk-cyan)}
.yk-btn--cyan{background:var(--yk-cyan);border-color:var(--yk-cyan);color:#05221B}
.yk-btn--cyan:hover{background:#7CF3DD;border-color:#7CF3DD;color:#05221B}
.yk-btn--orange{background:var(--yk-orange);border-color:var(--yk-orange);color:#2A0E00}
.yk-btn--orange:hover{background:#FF9A63;border-color:#FF9A63;color:#2A0E00}
.yk-btn--ghost{background:transparent}
.yk-btn--ghost:hover{background:rgba(31,78,62,.5)}
.yk-btn[disabled],.yk-btn[aria-disabled="true"]{color:var(--yk-stone);border-color:var(--yk-stone);background:transparent;cursor:not-allowed}

.yk-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;background:rgba(18,58,44,.5);border:1px solid var(--yk-line);
  font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.04em;color:var(--yk-mist);
}
.yk-tag--cyan{color:var(--yk-cyan);border-color:rgba(59,232,200,.5)}
.yk-tag--orange{color:var(--yk-orange);border-color:rgba(255,122,47,.5)}
.yk-tag--clay{color:var(--yk-clay);border-color:rgba(194,123,84,.5)}
.yk-tag--moss{color:var(--yk-moss);border-color:rgba(124,154,99,.5)}

.yk-stat{display:flex;flex-direction:column;gap:6px}
.yk-stat__value{
  font-family:var(--yk-font-mono);font-weight:700;letter-spacing:-.02em;line-height:1;
  font-size:clamp(28px,4vw,40px);color:var(--yk-cyan);
}
.yk-stat__label{font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.04em;color:var(--yk-mist)}

.yk-table{width:100%;font-size:14px;border:1px solid var(--yk-line)}
.yk-table th,.yk-table td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--yk-line);vertical-align:top}
.yk-table thead th{
  background:var(--yk-ink-3);font-family:var(--yk-font-mono);font-size:12px;
  font-weight:400;letter-spacing:.06em;color:var(--yk-cyan);
}
.yk-table tbody td{color:var(--yk-cream)}
.yk-table tbody tr:hover td{background:rgba(31,78,62,.35)}
.yk-table th:first-child,.yk-table td:first-child{font-family:var(--yk-font-mono)}
.yk-table th:last-child,.yk-table td:last-child{border-right:0}

.yk-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.02em;color:var(--yk-mist);
}
.yk-breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.yk-breadcrumb__item+.yk-breadcrumb__item::before{content:"/";color:var(--yk-stone)}
.yk-breadcrumb a:hover{color:var(--yk-cyan)}

.yk-media{
  position:relative;overflow:hidden;aspect-ratio:16 / 9;
  background:var(--yk-ink-3);border:1px solid var(--yk-line);
}
.yk-media--wide{aspect-ratio:21 / 9}
.yk-media--tall{aspect-ratio:3 / 4}
.yk-media--square{aspect-ratio:1 / 1}
.yk-media__img{width:100%;height:100%;object-fit:cover;display:block}
.yk-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(160deg,rgba(59,232,200,.14),transparent 48%,rgba(255,122,47,.14));
}

.yk-disclosure{border-bottom:1px solid var(--yk-line)}
.yk-disclosure__trigger{
  display:flex;width:100%;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;text-align:left;font-size:16px;font-weight:600;color:var(--yk-cream);
  transition:color .16s var(--yk-ease);
}
.yk-disclosure__trigger:hover{color:var(--yk-cyan)}
.yk-disclosure__icon{position:relative;width:14px;height:14px;flex:none}
.yk-disclosure__icon::before,.yk-disclosure__icon::after{content:"";position:absolute;background:var(--yk-cyan)}
.yk-disclosure__icon::before{left:0;right:0;top:6px;height:2px}
.yk-disclosure__icon::after{top:0;bottom:0;left:6px;width:2px;transition:transform .18s var(--yk-ease),opacity .18s var(--yk-ease)}
.yk-disclosure__trigger[aria-expanded="true"] .yk-disclosure__icon::after{transform:scaleY(0);opacity:0}
.yk-disclosure__panel{max-width:62em;padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--yk-mist)}
.yk-disclosure__panel[hidden]{display:none}

.yk-tabs__list{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:14px;margin-bottom:22px;border-bottom:1px solid var(--yk-line)}
.yk-tab{
  padding:7px 14px;background:rgba(18,58,44,.4);border:1px solid var(--yk-line);
  font-family:var(--yk-font-mono);font-size:13px;letter-spacing:.02em;color:var(--yk-mist);
  transition:color .16s var(--yk-ease),border-color .16s var(--yk-ease),background-color .16s var(--yk-ease);
}
.yk-tab:hover{color:var(--yk-cream);border-color:var(--yk-cyan)}
.yk-tab[aria-selected="true"]{background:var(--yk-cyan);border-color:var(--yk-cyan);color:#05221B;font-weight:700}
.yk-tabpanel[hidden]{display:none}

.yk-chips{display:flex;flex-wrap:wrap;gap:8px}
.yk-chip{
  padding:6px 13px;background:transparent;border:1px solid var(--yk-line);
  font-size:13px;color:var(--yk-mist);
  transition:color .16s var(--yk-ease),border-color .16s var(--yk-ease),background-color .16s var(--yk-ease);
}
.yk-chip:hover{color:var(--yk-cream);border-color:var(--yk-cyan)}
.yk-chip[aria-pressed="true"]{background:var(--yk-ink-3);border-color:var(--yk-cyan);color:var(--yk-cyan)}

.yk-index-nav{position:sticky;top:130px;padding-left:16px;border-left:1px solid var(--yk-line)}
.yk-index-nav__link{
  display:block;padding:7px 0;
  font-family:var(--yk-font-mono);font-size:13px;letter-spacing:.02em;color:var(--yk-mist);
  transition:color .16s var(--yk-ease);
}
.yk-index-nav__link:hover{color:var(--yk-cream)}
.yk-index-nav__link[aria-current="true"]{color:var(--yk-cyan)}
@media (max-width:900px){.yk-index-nav{position:static;top:auto}}

.yk-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));border:1px solid var(--yk-line)}
.yk-step{position:relative;padding:22px;border-right:1px solid var(--yk-line)}
.yk-step:last-child{border-right:0}
.yk-step__num{display:block;margin-bottom:10px;font-family:var(--yk-font-mono);font-size:12px;letter-spacing:.08em;color:var(--yk-orange)}
@media (max-width:900px){
  .yk-steps{grid-template-columns:1fr}
  .yk-step{border-right:0;border-bottom:1px solid var(--yk-line)}
  .yk-step:last-child{border-bottom:0}
}

.yk-timeline{border-top:1px solid var(--yk-line)}
.yk-timeline__item{
  display:grid;grid-template-columns:140px minmax(0,1fr);gap:24px;
  padding:18px 0;border-bottom:1px solid var(--yk-line);
}
.yk-timeline__time{font-family:var(--yk-font-mono);font-size:13px;letter-spacing:.02em;color:var(--yk-cyan)}
@media (max-width:600px){.yk-timeline__item{grid-template-columns:1fr;gap:6px}}

html[data-js="on"] [data-reveal]{opacity:0;transform:translateY(12px)}
html[data-js="on"] [data-reveal][data-revealed]{opacity:1;transform:none;transition:opacity .22s var(--yk-ease),transform .22s var(--yk-ease)}

@media (max-width:900px){
  .yk-section{padding-block:56px}
  .yk-section__head{margin-bottom:24px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .yk-pulse{animation:none}
  html[data-js="on"] [data-reveal]{opacity:1;transform:none}
}