*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%}
button{font:inherit;color:inherit}

:root{
  --yb-black:#060A08;
  --yb-ink:#0C1511;
  --yb-green:#16A56B;
  --yb-green-deep:#0B6B48;
  --yb-cyan:#3EF2C4;
  --yb-orange:#FF7A1A;
  --yb-fog:#F2FAF6;
  --yb-sage:#9CB8AC;
  --yb-line:#1E3A31;
  --yb-cyan-soft:rgba(62,242,196,.12);
  --yb-shadow:0 26px 64px -34px rgba(0,0,0,.92);
  --yb-radius:24px;
  --yb-radius-sm:16px;
  --yb-pill:999px;
  --yb-shell-w:1280px;
  --yb-gutter:clamp(18px,4vw,48px);
  --yb-font-head:"Barlow Condensed","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --yb-font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --yb-font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --yb-ease:cubic-bezier(.22,.61,.36,1);
}

body{
  min-height:100vh;
  color:var(--yb-fog);
  background-color:var(--yb-black);
  background-image:
    radial-gradient(1200px 640px at 84% -12%, rgba(22,165,107,.20), transparent 62%),
    radial-gradient(820px 460px at 2% 2%, rgba(62,242,196,.075), transparent 58%),
    linear-gradient(to right, rgba(30,58,49,.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,58,49,.42) 1px, transparent 1px);
  background-size:auto,auto,96px 96px,96px 96px;
  font-family:var(--yb-font-body);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

a{color:var(--yb-cyan)}
::selection{background:rgba(62,242,196,.28);color:var(--yb-fog)}
:where(a,button,summary,[tabindex]):focus-visible{outline:2px solid var(--yb-cyan);outline-offset:3px;border-radius:8px}

h1,h2,h3,h4{font-family:var(--yb-font-head);font-weight:700;line-height:1.08;letter-spacing:-.02em;color:var(--yb-fog)}
h1{font-size:clamp(2.4rem,6vw,5.6rem)}
h2{font-size:clamp(1.7rem,3.6vw,2.8rem)}
h3{font-size:clamp(1.25rem,2.2rem,1.62rem)}
p{text-wrap:pretty}

.yb-shell{width:100%;max-width:var(--yb-shell-w);margin-inline:auto;padding-inline:var(--yb-gutter)}
.yb-visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}

.yb-skip{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:12px 22px;border-radius:var(--yb-pill);
  background:var(--yb-cyan);color:#03130D;text-decoration:none;
  font-family:var(--yb-font-mono);font-size:13px;font-weight:700;letter-spacing:.06em;
  transform:translateY(-180%);transition:transform .22s var(--yb-ease);
}
.yb-skip:focus,.yb-skip:focus-visible{transform:translateY(0);outline:2px solid var(--yb-fog);outline-offset:3px}

/* ---------- header ---------- */
.yb-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(6,10,8,.97),rgba(6,10,8,.86));
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--yb-line);
}
.yb-deck--meta{
  border-bottom:1px solid rgba(30,58,49,.85);
  background:linear-gradient(92deg,rgba(11,107,72,.26),rgba(6,10,8,0) 58%);
}
.yb-meta-row{
  display:flex;align-items:center;gap:clamp(12px,2.2vw,30px);
  min-height:50px;padding-block:8px;
}
.yb-lockup{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;text-decoration:none;color:var(--yb-fog)}
.yb-lockup__mark{
  position:relative;width:34px;height:34px;flex:0 0 auto;border-radius:50%;
  display:grid;place-items:center;
  background:conic-gradient(from 205deg,var(--yb-green),var(--yb-cyan) 52%,var(--yb-green-deep) 88%,var(--yb-green));
  box-shadow:0 0 0 1px rgba(62,242,196,.35),0 0 22px -8px rgba(62,242,196,.85);
}
.yb-lockup__ring{width:13px;height:13px;border-radius:50%;background:rgba(6,10,8,.82);border:2px solid rgba(6,10,8,.9);box-shadow:inset 0 0 0 1px rgba(6,10,8,.6)}
.yb-lockup__text{display:flex;flex-direction:column;line-height:1.08}
.yb-lockup__name{font-family:var(--yb-font-head);font-weight:700;font-size:19px;letter-spacing:.01em}
.yb-lockup__sub{font-family:var(--yb-font-mono);font-size:10px;letter-spacing:.16em;color:var(--yb-sage);margin-top:2px}
.yb-meta-line{
  flex:1 1 auto;min-width:0;
  font-family:var(--yb-font-mono);font-size:12px;letter-spacing:.05em;color:var(--yb-sage);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.yb-status{
  display:inline-flex;align-items:center;gap:9px;flex:0 0 auto;
  padding:6px 14px 6px 12px;border-radius:var(--yb-pill);
  border:1px solid rgba(62,242,196,.3);background:rgba(62,242,196,.08);
  font-family:var(--yb-font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--yb-cyan);
}
.yb-status__dot{
  width:7px;height:7px;border-radius:50%;background:var(--yb-cyan);flex:0 0 auto;
  animation:yb-pulse 4s ease-in-out infinite;
}
@keyframes yb-pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(62,242,196,.55);opacity:1}
  50%{box-shadow:0 0 0 6px rgba(62,242,196,0);opacity:.7}
}
.yb-nav-row{
  position:relative;
  display:flex;align-items:center;gap:clamp(10px,1.8vw,26px);
  min-height:62px;padding-block:9px;
}
.yb-nav{flex:1 1 auto;min-width:0}
.yb-nav__list{display:flex;flex-wrap:wrap;align-items:center;gap:2px}
.yb-nav__item{display:block}
.yb-nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:8px;
  padding:9px 13px 10px 11px;border-radius:var(--yb-pill);
  text-decoration:none;color:var(--yb-sage);
  font-size:14.5px;font-weight:500;letter-spacing:.01em;white-space:nowrap;
  transition:color .2s var(--yb-ease),background-color .2s var(--yb-ease);
}
.yb-nav__idx{font-family:var(--yb-font-mono);font-size:10.5px;letter-spacing:.08em;color:rgba(156,184,172,.5);transition:color .2s var(--yb-ease)}
.yb-nav__link:hover,.yb-nav__link:focus-visible{color:var(--yb-fog);background:rgba(62,242,196,.08)}
.yb-nav__link:hover .yb-nav__idx,.yb-nav__link:focus-visible .yb-nav__idx{color:var(--yb-cyan)}
.yb-nav__link[aria-current="page"]{color:var(--yb-fog);background:var(--yb-cyan-soft)}
.yb-nav__link[aria-current="page"] .yb-nav__idx{color:var(--yb-cyan)}
.yb-nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--yb-cyan),var(--yb-green));
}
.yb-nav__cta{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:10px;
  padding:11px 20px;border-radius:var(--yb-pill);
  font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap;
  color:#04120C;background:linear-gradient(118deg,var(--yb-cyan),var(--yb-green) 72%);
  box-shadow:0 12px 28px -18px rgba(62,242,196,.95);
  transition:transform .2s var(--yb-ease),box-shadow .2s var(--yb-ease);
}
.yb-nav__cta::after{content:"→";font-family:var(--yb-font-mono);font-weight:600}
.yb-nav__cta:hover{transform:translateY(-2px);box-shadow:0 18px 34px -18px rgba(62,242,196,1)}
.yb-burger{
  display:none;flex:0 0 auto;
  width:46px;height:46px;padding:0;border-radius:14px;
  border:1px solid var(--yb-line);background:rgba(12,21,17,.92);
  color:var(--yb-fog);cursor:pointer;
}
.yb-burger__bar{
  display:block;width:19px;height:2px;margin:3.5px auto;border-radius:2px;background:currentColor;
  transition:transform .26s var(--yb-ease),opacity .2s var(--yb-ease);
}
.yb-header[data-open] .yb-burger__bar:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.yb-header[data-open] .yb-burger__bar:nth-child(2){opacity:0}
.yb-header[data-open] .yb-burger__bar:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
.yb-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(30,58,49,.7);overflow:hidden}
.yb-progress__bar{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--yb-green),var(--yb-cyan));transition:width .12s linear}

/* ---------- footer ---------- */
.yb-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(64px,9vw,120px);
  padding-top:clamp(40px,6vw,68px);
  background:linear-gradient(180deg,rgba(12,21,17,.55),#08110D 38%,var(--yb-black));
  border-top:1px solid var(--yb-line);
}
.yb-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--yb-green),var(--yb-cyan),transparent);
  opacity:.65;
}
.yb-footer__glow{
  position:absolute;top:-190px;left:50%;transform:translateX(-50%);
  width:min(960px,130%);height:340px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(22,165,107,.26),rgba(62,242,196,.06) 58%,transparent 76%);
  filter:blur(8px);
}
.yb-footer__top{
  position:relative;
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1.5fr);
  gap:clamp(30px,5vw,72px);
  padding-bottom:clamp(30px,4vw,48px);
}
.yb-footer__brand{min-width:0}
.yb-footer__mark{
  display:inline-block;
  font-family:var(--yb-font-head);font-weight:700;
  font-size:clamp(2rem,5vw,3.2rem);line-height:.95;letter-spacing:-.02em;
  color:var(--yb-fog);
  background:linear-gradient(96deg,#F2FAF6 8%,var(--yb-cyan) 68%,var(--yb-green) 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.yb-footer__summary{
  max-width:42ch;margin-top:16px;
  color:var(--yb-sage);font-size:15px;line-height:1.8;
}
.yb-footer__contact{display:flex;flex-direction:column;gap:10px;margin-top:24px}
.yb-copy{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  width:-moz-fit-content;width:fit-content;max-width:100%;
  padding:9px 15px;border-radius:var(--yb-pill);cursor:pointer;
  border:1px solid var(--yb-line);background:rgba(30,58,49,.38);
  color:var(--yb-fog);text-align:left;
  font-family:var(--yb-font-mono);font-size:12.5px;letter-spacing:.04em;
  transition:border-color .2s var(--yb-ease),background-color .2s var(--yb-ease);
}
.yb-copy:hover{border-color:rgba(62,242,196,.5);background:rgba(62,242,196,.1)}
.yb-copy__label{font-size:10.5px;letter-spacing:.14em;color:var(--yb-sage)}
.yb-copy__value{color:var(--yb-cyan);word-break:break-all}
.yb-copy__act{
  font-size:10.5px;letter-spacing:.1em;padding:3px 10px;border-radius:var(--yb-pill);
  background:rgba(62,242,196,.14);color:var(--yb-cyan);
}
.yb-footer__addr{margin-top:20px;font-family:var(--yb-font-mono);font-size:12px;letter-spacing:.04em;color:var(--yb-sage)}
.yb-footer__hours{margin-top:6px;font-family:var(--yb-font-mono);font-size:11.5px;letter-spacing:.06em;color:rgba(156,184,172,.78)}
.yb-footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,36px)}
.yb-fcol{min-width:0}
.yb-fcol__title{
  font-family:var(--yb-font-mono);font-size:11px;font-weight:600;letter-spacing:.14em;
  color:var(--yb-cyan);padding-bottom:10px;margin-bottom:14px;
  border-bottom:1px solid var(--yb-line);
}
.yb-fcol__list{display:flex;flex-direction:column;gap:9px}
.yb-fcol__link{
  position:relative;display:inline-block;padding-left:0;
  color:var(--yb-sage);font-size:14.5px;text-decoration:none;
  transition:color .2s var(--yb-ease),padding-left .2s var(--yb-ease);
}
.yb-fcol__link::before{
  content:"";position:absolute;left:0;top:50%;width:0;height:1px;
  background:var(--yb-cyan);transition:width .2s var(--yb-ease);
}
.yb-fcol__link:hover,.yb-fcol__link:focus-visible{color:var(--yb-fog);padding-left:18px}
.yb-fcol__link:hover::before,.yb-fcol__link:focus-visible::before{width:12px}
.yb-footer__bottom{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 26px;
  padding-block:22px;border-top:1px solid var(--yb-line);
  font-family:var(--yb-font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--yb-sage);
}
.yb-footer__legal{color:rgba(156,184,172,.85)}
.yb-footer__copy{color:rgba(156,184,172,.72)}
.yb-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:70;
  width:52px;height:52px;padding:0;border-radius:50%;cursor:pointer;
  display:grid;place-items:center;
  border:1px solid rgba(62,242,196,.35);background:rgba(12,21,17,.92);
  color:var(--yb-cyan);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  box-shadow:0 18px 40px -24px rgba(0,0,0,.95);
  transition:transform .2s var(--yb-ease),background-color .2s var(--yb-ease),color .2s var(--yb-ease);
}
.yb-top[hidden]{display:none}
.yb-top:hover{transform:translateY(-3px);background:rgba(22,165,107,.4);color:var(--yb-fog)}
.yb-top__arrow{font-family:var(--yb-font-mono);font-size:16px;line-height:1}

/* ---------- shared components ---------- */
.yb-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:var(--yb-pill);border:1px solid transparent;
  font-family:var(--yb-font-body);font-size:15px;font-weight:600;
  text-decoration:none;cursor:pointer;
  transition:transform .2s var(--yb-ease),background-color .2s var(--yb-ease),color .2s var(--yb-ease),border-color .2s var(--yb-ease);
}
.yb-btn--primary{
  color:#04120C;background:linear-gradient(118deg,var(--yb-cyan),var(--yb-green) 72%);
  box-shadow:0 16px 34px -20px rgba(62,242,196,.95);
}
.yb-btn--primary:hover{transform:translateY(-2px)}
.yb-btn--ghost{color:var(--yb-fog);background:transparent;border-color:var(--yb-line)}
.yb-btn--ghost:hover{border-color:var(--yb-cyan);color:var(--yb-cyan)}
.yb-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--yb-font-mono);font-size:11.5px;letter-spacing:.2em;color:var(--yb-cyan);
}
.yb-eyebrow::before{content:"";width:22px;height:1px;background:currentColor;flex:0 0 auto}
.yb-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--yb-pill);
  border:1px solid var(--yb-line);background:rgba(30,58,49,.45);
  color:var(--yb-sage);font-family:var(--yb-font-mono);font-size:12px;letter-spacing:.05em;
  text-decoration:none;cursor:pointer;
  transition:color .2s var(--yb-ease),background-color .2s var(--yb-ease),border-color .2s var(--yb-ease);
}
.yb-chip:hover{color:var(--yb-fog);border-color:rgba(62,242,196,.45)}
.yb-chip.is-active,.yb-chip[aria-pressed="true"]{color:#04120C;background:var(--yb-cyan);border-color:var(--yb-cyan)}
.yb-panel{
  position:relative;padding:clamp(20px,3vw,32px);
  border:1px solid var(--yb-line);border-radius:var(--yb-radius);
  background:linear-gradient(160deg,rgba(12,21,17,.94),rgba(6,10,8,.9));
  box-shadow:var(--yb-shadow);
}
.yb-panel::before{
  content:"";position:absolute;inset:9px;pointer-events:none;
  border-radius:calc(var(--yb-radius) - 9px);
  border:1px dashed rgba(30,58,49,.75);
}
.yb-frame{
  position:relative;padding:clamp(18px,3vw,34px);
  border:1px solid var(--yb-line);border-radius:var(--yb-radius);
}
.yb-frame::before,.yb-frame::after{content:"";position:absolute;width:18px;height:18px;border:2px solid var(--yb-cyan)}
.yb-frame::before{top:-1px;left:-1px;border-right:0;border-bottom:0;border-top-left-radius:var(--yb-radius)}
.yb-frame::after{bottom:-1px;right:-1px;border-left:0;border-top:0;border-bottom-right-radius:var(--yb-radius)}
.yb-section{padding-block:clamp(38px,6vw,78px)}
.yb-section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px 28px;margin-bottom:clamp(20px,3vw,36px);padding-bottom:14px;
  border-bottom:1px solid var(--yb-line);
}
.yb-section__title{font-family:var(--yb-font-head);font-size:clamp(1.6rem,3.4vw,2.5rem);letter-spacing:-.02em}
.yb-grid{display:grid;gap:clamp(16px,2.4vw,28px);grid-template-columns:repeat(var(--yb-cols,1),minmax(0,1fr))}
.yb-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:18px;
  font-family:var(--yb-font-mono);font-size:12px;letter-spacing:.05em;color:var(--yb-sage);
}
.yb-breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.yb-breadcrumb__item[aria-current="page"]{color:var(--yb-fog)}
.yb-breadcrumb__link{color:var(--yb-sage);text-decoration:none}
.yb-breadcrumb__link:hover{color:var(--yb-cyan)}
.yb-breadcrumb__sep{color:rgba(156,184,172,.45)}
.yb-prose{max-width:68ch;color:var(--yb-sage);font-size:17px;line-height:1.8}
.yb-prose p+p{margin-top:1.1em}
.yb-prose strong{color:var(--yb-fog)}
.yb-prose a{color:var(--yb-cyan);text-decoration:underline;text-underline-offset:3px}
.yb-media{
  position:relative;overflow:hidden;isolation:isolate;
  aspect-ratio:16/10;
  border:1px solid var(--yb-line);border-radius:var(--yb-radius);
  background:linear-gradient(140deg,rgba(22,165,107,.24),rgba(6,10,8,.92) 62%);
}
.yb-media__img{display:block;width:100%;height:100%;object-fit:cover}
.yb-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 52%,rgba(6,10,8,.74));
}
.yb-media--wide{aspect-ratio:21/9}
.yb-media--square{aspect-ratio:1/1}
.yb-media__badge{
  position:absolute;left:14px;bottom:14px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--yb-pill);
  background:rgba(6,10,8,.8);border:1px solid rgba(62,242,196,.35);
  color:var(--yb-cyan);font-family:var(--yb-font-mono);font-size:11.5px;letter-spacing:.08em;
}

/* ---------- reveal ---------- */
html[data-yb-js] [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .6s var(--yb-ease),transform .6s var(--yb-ease);
}
html[data-yb-js] [data-reveal].is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (min-width:640px){
  .yb-grid{grid-template-columns:repeat(var(--yb-cols-sm,var(--yb-cols,1)),minmax(0,1fr))}
}
@media (min-width:1024px){
  .yb-grid{grid-template-columns:repeat(var(--yb-cols-lg,var(--yb-cols-sm,var(--yb-cols,1))),minmax(0,1fr))}
}

@media (max-width:960px){
  .yb-meta-line{display:none}
  .yb-meta-row{justify-content:space-between;min-height:46px}
  .yb-lockup__name{font-size:17px}
  .yb-lockup__sub{font-size:9.5px;letter-spacing:.13em}
  .yb-status{font-size:10.5px;padding:5px 11px 5px 10px;letter-spacing:.04em}
  .yb-nav-row{justify-content:space-between;min-height:58px}
  .yb-burger{display:grid;place-items:center}
  .yb-nav{
    position:absolute;left:0;right:0;top:calc(100% + 1px);z-index:5;
    display:none;flex:0 0 auto;
    padding:12px;
    border:1px solid var(--yb-line);border-top:0;
    border-radius:0 0 22px 22px;
    background:linear-gradient(180deg,#0A130F,#060A08);
    box-shadow:0 34px 64px -32px rgba(0,0,0,.95);
  }
  .yb-header[data-open] .yb-nav{display:block}
  .yb-nav__list{flex-direction:column;flex-wrap:nowrap;align-items:stretch;gap:4px}
  .yb-nav__link{
    width:100%;justify-content:flex-start;
    padding:13px 15px 13px 18px;border-radius:14px;font-size:15.5px;
  }
  .yb-nav__link[aria-current="page"]::after{
    left:0;right:auto;top:10px;bottom:10px;width:3px;height:auto;border-radius:3px;
    background:var(--yb-cyan);
  }
  .yb-nav__cta{margin-left:auto;padding:10px 16px;font-size:13px}
  .yb-footer__top{grid-template-columns:1fr;gap:clamp(28px,5vw,44px)}
  .yb-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 26px}
}

@media (max-width:560px){
  body{font-size:16px}
  .yb-nav__cta{padding:9px 13px;font-size:12px;gap:6px}
  .yb-nav__cta::after{display:none}
  .yb-footer__cols{grid-template-columns:1fr}
  .yb-footer__bottom{font-size:11px}
  .yb-top{width:46px;height:46px}
}

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