:root{
  --green:#0B3D2E;
  --ink:#071F18;
  --cyan:#00E5C3;
  --cyan-soft:#7CFFF0;
  --amber:#FFB347;
  --magenta:#FF3D7F;
  --mist:#F2F7F4;
  --sage:#9BB3A9;
  --paper:#E8EFEA;
  --violet:#7A5CFF;

  --rail-w:248px;
  --content-max:1120px;
  --radius:4px;

  --line:rgba(0,229,195,.24);
  --line-soft:rgba(155,179,169,.22);

  --font-head:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:24px;
}

body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  color:var(--mist);
  background-color:var(--green);
  background-image:
    radial-gradient(140% 58% at 82% -16%, rgba(0,229,195,.18), transparent 58%),
    radial-gradient(90% 44% at 4% 2%, rgba(122,92,255,.14), transparent 62%),
    repeating-linear-gradient(90deg, rgba(0,229,195,.05) 0 1px, transparent 1px 96px);
  background-repeat:no-repeat,no-repeat,repeat;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-head);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.01em;
  color:var(--mist);
}

p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,picture,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}

:focus-visible{outline:2px solid var(--cyan-soft);outline-offset:3px;border-radius:2px}
::selection{background:rgba(0,229,195,.28);color:var(--mist)}

/* ---------- layout utilities ---------- */
.wrap{
  width:100%;
  max-width:var(--content-max);
  margin:0 auto;
  padding:0 24px;
}
.section{padding-block:clamp(40px,6vw,88px)}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.stack > * + *{margin-top:16px}

/* ---------- small type pieces ---------- */
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--violet);
}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  color:var(--amber);
  letter-spacing:-.02em;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:42px;
  padding:0 18px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:13px;
  font-weight:800;
  letter-spacing:.06em;
  color:var(--mist);
  text-align:center;
  cursor:pointer;
  transition:color .2s,background-color .2s,border-color .2s,transform .2s,box-shadow .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--cyan);color:#04241C;border-color:var(--cyan)}
.btn--primary:hover{background:var(--cyan-soft);border-color:var(--cyan-soft);box-shadow:0 10px 22px -16px var(--cyan)}
.btn--ghost{background:transparent;color:var(--mist);border-color:rgba(155,179,169,.5)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan-soft);background:rgba(0,229,195,.08)}
.btn--amber{background:var(--amber);color:#2A1A00;border-color:var(--amber)}
.btn--amber:hover{background:#FFC670;border-color:#FFC670}
.btn--magenta{background:transparent;color:var(--magenta);border-color:rgba(255,61,127,.6)}
.btn--magenta:hover{background:rgba(255,61,127,.14);color:#FF7FA8;border-color:var(--magenta)}
.btn--sm{min-height:34px;padding:0 12px;font-size:12px}
.btn--block{width:100%}

/* ---------- chips & tags ---------- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border:1px solid var(--line-soft);
  border-radius:999px;
  background:rgba(0,229,195,.05);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--sage);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:2px 8px;
  border:1px solid currentColor;
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
}
.tag--cyan{color:var(--cyan)}
.tag--amber{color:var(--amber)}
.tag--violet{color:var(--violet)}
.tag--magenta{color:var(--magenta)}

/* ---------- cards ---------- */
.card{
  position:relative;
  padding:22px 20px;
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  background:rgba(7,31,24,.55);
  transition:border-color .25s,transform .25s,background-color .25s;
}
.card:hover{border-color:var(--cyan);background:rgba(7,31,24,.82);transform:translateY(-2px)}
.card__eyebrow{
  display:block;
  margin-bottom:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--violet);
}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--sage);
}
.breadcrumb a{
  color:var(--sage);
  border-bottom:1px solid transparent;
  transition:color .2s,border-color .2s;
}
.breadcrumb a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumb__sep{color:var(--violet)}
.breadcrumb [aria-current="page"]{color:var(--mist)}

/* ---------- prose ---------- */
.prose{max-width:68ch;font-size:16.5px;line-height:1.85;color:#DCEBE4}
.prose > * + *{margin-top:1.1em}
.prose h2{font-size:clamp(22px,2.2vw,30px);margin-top:2em}
.prose h3{font-size:clamp(18px,1.6vw,22px);margin-top:1.8em}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(0,229,195,.42)}
.prose a:hover{color:var(--cyan-soft);border-bottom-color:var(--cyan-soft)}
.prose ul > li{position:relative;padding-left:20px}
.prose ul > li + li{margin-top:.5em}
.prose ul > li::before{
  content:"";
  position:absolute;
  left:0;
  top:.78em;
  width:9px;
  height:1px;
  background:var(--cyan);
}
.prose blockquote{
  padding:14px 18px;
  border-left:2px solid var(--amber);
  background:rgba(255,179,71,.07);
  font-size:15px;
  color:var(--mist);
}

/* ---------- reusable media frame ---------- */
.figmedia{
  position:relative;
  overflow:hidden;
  margin:0;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(150deg,#0E4636 0%,#071F18 78%);
  aspect-ratio:16 / 10;
}
.figmedia > picture{display:block;width:100%;height:100%}
.figmedia img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.82) contrast(1.06) brightness(.9);
}
.figmedia::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(0,229,195,.14);
  background:linear-gradient(180deg,transparent 55%,rgba(7,31,24,.55));
}
.figmedia--wide{aspect-ratio:21 / 9}
.figmedia--tall{aspect-ratio:4 / 5}
.figmedia--square{aspect-ratio:1 / 1}
.figmedia__caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--sage);
}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  left:12px;
  top:12px;
  z-index:200;
  padding:10px 16px;
  border-radius:var(--radius);
  background:var(--cyan);
  color:#04241C;
  font-size:13px;
  font-weight:800;
  letter-spacing:.06em;
  transform:translateY(-180%);
  transition:transform .2s;
}
.skip-link:focus{transform:translateY(0)}

/* ---------- header: framed side rail ---------- */
.site-rail{
  position:fixed;
  left:0;
  top:0;
  bottom:0;
  z-index:60;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  padding:20px 16px 16px;
  background:
    radial-gradient(120% 40% at 50% 0%, rgba(0,229,195,.14), transparent 62%),
    linear-gradient(180deg,#08251C 0%,#071F18 62%,#061A14 100%);
  border-right:1px solid var(--line);
  overflow:hidden;
}
.rail-inner{
  position:relative;
  display:flex;
  flex-direction:column;
  width:100%;
  height:100%;
  min-height:0;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:4px 2px 14px;
  border-bottom:1px solid var(--line-soft);
}
.brand__glyph{
  position:relative;
  flex:0 0 34px;
  width:34px;
  height:34px;
  border:1px solid var(--cyan);
  border-radius:3px;
  background:rgba(0,229,195,.08);
  transition:background-color .2s,border-color .2s;
}
.brand:hover .brand__glyph{background:rgba(0,229,195,.2);border-color:var(--cyan-soft)}
.brand__pitch{position:absolute;inset:7px;border:1px solid rgba(124,255,240,.55);border-radius:1px}
.brand__pitch::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  width:1px;
  height:100%;
  background:rgba(124,255,240,.55);
}
.brand__pitch::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:9px;
  height:9px;
  margin:-5px 0 0 -5px;
  border:1px solid var(--amber);
  border-radius:50%;
}
.brand__text{display:flex;flex-direction:column;line-height:1.24;min-width:0}
.brand__name{
  font-family:var(--font-head);
  font-size:17px;
  font-weight:800;
  letter-spacing:.05em;
  color:var(--mist);
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.16em;
  color:var(--sage);
}

.rail-nav{
  margin-top:18px;
  min-height:0;
  overflow-y:auto;
  scrollbar-width:thin;
}
.rail-nav__label{
  margin:0 0 8px;
  padding-left:14px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--violet);
}
.rail-nav__list{display:flex;flex-direction:column;gap:2px}
.rail-nav__link{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:8px 10px 8px 14px;
  border-left:2px solid transparent;
  border-radius:0 6px 6px 0;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--sage);
  transition:color .2s,background-color .2s,border-color .2s,transform .2s;
}
.rail-nav__link:hover{
  color:var(--cyan-soft);
  background:rgba(0,229,195,.09);
  border-left-color:var(--cyan);
  transform:translateX(2px);
}
.rail-nav__link[aria-current="page"]{
  color:var(--cyan);
  font-weight:800;
  background:rgba(0,229,195,.13);
  border-left-color:var(--cyan);
}
.rail-nav__num{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:var(--violet);
  transition:color .2s;
}
.rail-nav__link:hover .rail-nav__num{color:var(--cyan-soft)}
.rail-nav__link[aria-current="page"] .rail-nav__num{color:var(--amber)}

.rail-actions{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line-soft);
}
.rail-meta{
  display:flex;
  align-items:center;
  gap:8px;
  margin:12px 0 0;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--sage);
}
.rail-meta__dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(0,229,195,.16);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border:1px solid rgba(155,179,169,.45);
  border-radius:var(--radius);
  background:transparent;
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .2s,color .2s,background-color .2s;
}
.nav-toggle:hover{border-color:var(--cyan);background:rgba(0,229,195,.1)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle__bars span{
  display:block;
  height:1.5px;
  background:currentColor;
  transition:transform .2s,opacity .2s;
}
.site-rail[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.site-rail[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-rail[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}

.rail-progress{
  position:absolute;
  top:0;
  right:0;
  width:2px;
  height:100%;
  background:rgba(155,179,169,.14);
  pointer-events:none;
}
.rail-progress__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleY(var(--p,0));
  transform-origin:top;
  background:linear-gradient(180deg,var(--cyan),var(--violet));
}

@media (min-width:900px){
  body{padding-left:var(--rail-w)}
}

/* ---------- footer: archive folder ---------- */
.site-foot{
  position:relative;
  overflow:hidden;
  margin-top:clamp(48px,8vw,110px);
  padding:clamp(40px,6vw,72px) 0 0;
  border-top:1px solid var(--line);
  background:
    radial-gradient(90% 120% at 88% 0%, rgba(122,92,255,.16), transparent 60%),
    radial-gradient(70% 90% at 6% 100%, rgba(0,229,195,.1), transparent 62%),
    var(--ink);
  color:var(--sage);
}
.site-foot::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(0,229,195,0) 42%,var(--violet));
}
.site-foot::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.5;
  background:repeating-linear-gradient(115deg, rgba(232,239,234,.035) 0 1px, transparent 1px 14px);
}
.foot-wrap{
  position:relative;
  z-index:1;
  width:100%;
  max-width:var(--content-max);
  margin:0 auto;
  padding:0 24px;
}
.foot-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(28px,4vw,56px);
}
.foot-brand{min-width:0}
.brand--foot{padding:0 0 16px;border-bottom:1px solid var(--line-soft)}
.brand--foot .brand__name{font-size:19px}
.foot-summary{
  margin-top:16px;
  max-width:34ch;
  font-size:14.5px;
  line-height:1.8;
  color:var(--sage);
}
.foot-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

.foot-cols{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:26px 20px;
}
.foot-col{min-width:0}
.foot-col__title{
  position:relative;
  margin-bottom:12px;
  padding-left:12px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.12em;
  color:var(--mist);
}
.foot-col__title::before{
  content:"";
  position:absolute;
  left:0;
  top:.62em;
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--cyan);
}
.foot-col__list > li + li{margin-top:4px}

.foot-link{
  position:relative;
  display:inline-block;
  padding:3px 0;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--sage);
  transition:color .2s;
}
.foot-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:1px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s;
}
.foot-link:hover{color:var(--cyan-soft)}
.foot-link:hover::after{transform:scaleX(1)}
.foot-link--sm{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em}

.foot-contact{margin-top:clamp(30px,4.5vw,52px)}
.foot-card{
  position:relative;
  max-width:620px;
  padding:22px 22px 20px;
  border:1px solid rgba(232,239,234,.2);
  border-radius:2px;
  background:linear-gradient(180deg, rgba(232,239,234,.07), rgba(232,239,234,.03));
}
.foot-card::before{
  content:"";
  position:absolute;
  inset:5px -5px -5px 5px;
  border:1px solid rgba(0,229,195,.16);
  border-radius:2px;
  pointer-events:none;
}
.foot-card__title{
  margin-bottom:14px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.14em;
  color:var(--cyan);
}
.foot-card__list{display:grid;gap:8px}
.foot-card__row{
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:12px;
  align-items:baseline;
}
.foot-card__key{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--violet);
}
.foot-card__val{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--mist);
  word-break:break-word;
}
.foot-card__note{
  margin-top:14px;
  padding-top:12px;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;
  line-height:1.7;
  color:var(--sage);
}

.foot-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 24px;
  margin-top:clamp(28px,4vw,44px);
  padding:18px 0 26px;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--sage);
}
.foot-copy{margin-right:auto}
.foot-legal{display:flex;flex-wrap:wrap;gap:16px}
.foot-icp{color:rgba(155,179,169,.8)}

/* ---------- responsive ---------- */
@media (max-width:1080px) and (min-width:900px){
  :root{--rail-w:214px}
  .rail-nav__link{font-size:12.5px;padding:7px 8px 7px 12px}
}

@media (min-width:900px){
  .foot-inner{grid-template-columns:minmax(240px,.85fr) minmax(0,1.5fr)}
}

@media (max-width:899px){
  body{padding-left:0}

  .site-rail{
    position:sticky;
    left:auto;
    right:auto;
    top:0;
    bottom:auto;
    width:100%;
    height:auto;
    padding:10px 16px;
    border-right:0;
    border-bottom:1px solid var(--line);
    background:rgba(6,26,21,.97);
    box-shadow:0 14px 34px -28px #000;
    overflow:visible;
  }
  .rail-inner{
    flex-direction:row;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:0;
    height:auto;
  }
  .brand{order:1;flex:1 1 auto;gap:8px;padding:4px 0;border-bottom:0}
  .brand__glyph{flex-basis:28px;width:28px;height:28px}
  .brand__pitch{inset:6px}
  .brand__name{font-size:15px}
  .brand__sub{font-size:8px;letter-spacing:.12em}
  .nav-toggle{order:2;display:inline-flex}
  .rail-meta{display:none}

  .rail-nav{
    order:4;
    flex:0 0 100%;
    display:none;
    margin-top:10px;
    padding:14px 0 4px;
    border-top:1px solid var(--line-soft);
    max-height:calc(100vh - 140px);
    overflow-y:auto;
  }
  .rail-nav__label{display:none}
  .rail-nav__list{gap:2px}
  .rail-nav__link{padding:10px 12px 10px 12px;font-size:14px}

  .rail-actions{
    order:5;
    flex:0 0 100%;
    display:none;
    flex-direction:row;
    gap:10px;
    margin-top:8px;
    padding:12px 0 6px;
    border-top:1px solid var(--line-soft);
  }
  .rail-actions .btn{flex:1 1 0}

  .site-rail[data-open] .rail-nav,
  .site-rail[data-open] .rail-actions{display:flex}

  .rail-progress{
    top:auto;
    bottom:0;
    left:0;
    right:0;
    width:100%;
    height:2px;
    background:transparent;
  }
  .rail-progress__bar{
    width:100%;
    height:2px;
    transform:scaleX(var(--p,0));
    transform-origin:left;
    background:linear-gradient(90deg,var(--cyan),var(--violet));
  }

  .wrap,.foot-wrap{padding:0 20px}
  .foot-card{max-width:none}
  .foot-card__row{grid-template-columns:48px minmax(0,1fr)}
  .foot-bottom{font-size:10.5px;letter-spacing:.08em}
  .foot-copy{flex:1 1 100%;margin-right:0}
}

@media (max-width:520px){
  .foot-legal{gap:12px}
  .foot-card{padding:18px 16px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:hover,.card:hover,.rail-nav__link:hover{transform:none}
  .foot-link:hover::after{transform:scaleX(1)}
}