:root{
  --bg: #ffffff;
  --text: #0b0f14;
  --muted: rgba(11,15,20,.72);
  --border: rgba(11,15,20,.12);
  --soft: rgba(11,15,20,.04);
  --soft2: rgba(11,15,20,.06);
  --shadow: 0 12px 40px rgba(11,15,20,.08);
  --radius: 18px;
  --radius2: 24px;
  --max: 1120px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

[data-theme="dark"]{
  --bg: #0b0f14;
  --text: #f5f7fb;
  --muted: rgba(245,247,251,.72);
  --border: rgba(245,247,251,.14);
  --soft: rgba(245,247,251,.06);
  --soft2: rgba(245,247,251,.10);
  --shadow: 0 14px 50px rgba(0,0,0,.45);
}

*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; }

.container{
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.hide-sm{ display:inline; }
@media (max-width: 820px){
  .hide-sm{ display:none; }
}

/* Announcement */
.announce{
  border-bottom: 1px solid var(--border);
  background: var(--soft);
}
.announce__inner{
  padding: 10px 0;
  display:flex;
  gap: 12px;
  align-items:center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.pill{
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
}
.announce__text{
  color: var(--muted);
  flex: 1;
  min-width: 220px;
}
.announce__link{
  font-weight: 600;
  white-space: nowrap;
}

/* Header */
.header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom: 1px solid var(--border);
}
.header__inner{
  padding: 14px 0;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 14px;
}
.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.brand__mark{
  width: 34px; height: 34px;
  display:grid; place-items:center;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
}
.nav{
  display:flex;
  gap: 18px;
  align-items:center;
  color: var(--muted);
}
.nav a{
  padding: 8px 10px;
  border-radius: 10px;
}
.nav a:hover{
  background: var(--soft);
  text-decoration: none;
  color: var(--text);
}
.header__actions{
  display:flex;
  gap: 10px;
  align-items:center;
}
.hamburger{ display:none; }

@media (max-width: 820px){
  .nav{ display:none; }
  .hamburger{ display:inline-flex; }
}

/* Mobile menu */
.mobileMenu{
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.mobileMenu__inner{
  padding: 10px 0 16px;
  display:grid;
  gap: 8px;
}
.mobileMenu__inner a{
  padding: 12px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--soft);
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  text-decoration: none !important;
  transition: transform .08s ease, background .2s ease;
}
.btn:hover{ background: var(--soft); }
.btn:active{ transform: translateY(1px); }

.btn--primary{
  background: var(--text);
  color: var(--bg);
  border-color: color-mix(in srgb, var(--text) 70%, transparent);
}
.btn--primary:hover{
  background: color-mix(in srgb, var(--text) 92%, var(--bg));
}
.btn--soft{
  background: var(--soft);
}
.btn--ghost{
  background: transparent;
}
.btn--tiny{
  padding: 8px 10px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 13px;
}

/* Hero */
.hero{
  padding: 44px 0 18px;
}
.hero__grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 26px;
  align-items: start;
}
@media (max-width: 980px){
  .hero__grid{ grid-template-columns: 1fr; }
}
.kicker{
  margin: 0 0 10px;
  color: var(--muted);
  text-transform: lowercase;
  letter-spacing: .02em;
}
h1{
  margin: 0 0 12px;
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.lede{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 16px;
  max-width: 60ch;
}
.ctaRow{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}
.miniNote{
  margin-top: 14px;
  display:flex;
  align-items:center;
  gap: 10px;
  color: var(--muted);
  font-weight: 600;
}
.dot{
  width: 10px; height: 10px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--text) 28%, transparent);
  border: 1px solid var(--border);
}

/* Cards */
.card{
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 18px;
  background: var(--bg);
  box-shadow: var(--shadow);
}
.hero__card .card{ position: sticky; top: 92px; }
@media (max-width: 980px){
  .hero__card .card{ position: relative; top: 0; }
}
.card__top{
  display:flex;
  gap: 12px;
  align-items:flex-start;
}
.avatar{
  width: 40px; height: 40px;
  display:grid; place-items:center;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--soft);
  flex: 0 0 auto;
}
.card__title{
  margin: 0;
  font-weight: 900;
  letter-spacing: -0.02em;
}
.card__sub{
  margin: 4px 0 0;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
}

/* Code box */
.codebox{
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--soft);
}
.codebox__head{
  padding: 10px 12px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
.codebox__label{
  font-weight: 800;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .02em;
}
pre{
  margin: 0;
  padding: 12px;
  font-family: var(--mono);
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Steps */
.steps{
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display:grid;
  gap: 10px;
}
.steps li{
  display:flex;
  gap: 10px;
  align-items:flex-start;
  color: var(--muted);
  font-weight: 650;
}
.steps__n{
  width: 24px; height: 24px;
  border-radius: 10px;
  display:grid; place-items:center;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-weight: 900;
  flex: 0 0 auto;
}
.card__foot{
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.link{
  font-weight: 800;
  color: var(--text);
}

/* Stats */
.stats{
  padding: 12px 0 28px;
}
.stats__grid{
  display:grid;
  grid-template-columns: repeat(4,1fr);
  gap: 12px;
}
@media (max-width: 820px){
  .stats__grid{ grid-template-columns: repeat(2,1fr); }
}
.stat{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  background: var(--soft);
}
.stat__num{
  font-size: 26px;
  font-weight: 950;
  letter-spacing: -0.02em;
}
.stat__label{
  color: var(--muted);
  font-weight: 700;
}

/* Sections */
.section{
  padding: 34px 0;
}
.section--soft{
  background: var(--soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section__head{
  display:flex;
  align-items:flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.section__head h2{
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.spacer{ height: 26px; }

/* Grids */
.grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
@media (max-width: 980px){
  .grid{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px){
  .grid{ grid-template-columns: 1fr; }
}

.agentCard{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  background: var(--bg);
}
.agentCard__top{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
}
.agentCard__name{
  font-weight: 900;
  letter-spacing: -0.02em;
}
.agentCard__meta{
  margin-top: 8px;
  color: var(--muted);
  font-weight: 650;
  font-size: 13px;
}

/* Chips */
.chips{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip{
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 800;
  color: var(--muted);
}
.chip b{ color: var(--text); }

/* Tabs */
.tabs{
  display:flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tab{
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 850;
  color: var(--muted);
  cursor: pointer;
}
.tab.is-active{
  background: var(--text);
  color: var(--bg);
  border-color: color-mix(in srgb, var(--text) 70%, transparent);
}

/* Posts */
.posts{
  display:grid;
  gap: 12px;
}
.post{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  background: var(--bg);
}
.post__top{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.post__tag{
  font-family: var(--mono);
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--soft);
}
.post__title{
  margin: 10px 0 8px;
  font-weight: 950;
  letter-spacing: -0.02em;
  font-size: 16px;
}
.post__body{
  margin: 0;
  color: var(--muted);
  font-weight: 650;
}
.post__meta{
  margin-top: 10px;
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-weight: 750;
  font-size: 13px;
}

/* Dev section */
.dev{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 18px;
  align-items: start;
}
@media (max-width: 980px){
  .dev{ grid-template-columns: 1fr; }
}
.dev__copy h2{ margin: 0 0 10px; }
.dev__copy p{ margin: 0 0 14px; color: var(--muted); font-weight: 650; }
.dev__cta{ display:flex; gap: 10px; flex-wrap: wrap; }

/* Form */
.form{ margin-top: 10px; display:grid; gap: 12px; }
.field span{ display:block; font-weight: 800; margin-bottom: 6px; color: var(--muted); }
input[type="email"]{
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  outline: none;
}
input[type="email"]:focus{
  border-color: color-mix(in srgb, var(--text) 40%, var(--border));
}
.check{
  display:flex;
  gap: 10px;
  align-items:flex-start;
  color: var(--muted);
  font-weight: 650;
  font-size: 13px;
}
.check input{ margin-top: 3px; }

.tiny{ margin: 0; font-size: 12px; color: var(--muted); font-weight: 700; }
.muted{ color: var(--muted); }

/* About */
.about p{ color: var(--muted); font-weight: 650; max-width: 80ch; }
.about__grid{
  margin-top: 14px;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
@media (max-width: 980px){
  .about__grid{ grid-template-columns: 1fr; }
}
.about__grid .card{ box-shadow: none; background: var(--soft); }

/* Footer */
.footer{
  border-top: 1px solid var(--border);
  padding: 18px 0;
}
.footer__inner{
  display:flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}
.footer__links{
  display:flex;
  gap: 14px;
  color: var(--muted);
  font-weight: 750;
}
.brand--footer .brand__mark{ background: var(--soft); box-shadow: none; }

/* Article layout */
.articleWrap{
  display:grid;
  grid-template-columns: 280px 1fr;
  gap: 14px;
  align-items:start;
}
@media (max-width: 980px){
  .articleWrap{ grid-template-columns: 1fr; }
}
.toc__box{
  border:1px solid var(--border);
  border-radius:12px;
  background:var(--soft2);
  padding:12px;
  position: sticky;
  top: 86px;
}
@media (max-width: 980px){
  .toc__box{ position: relative; top: 0; }
}
.toc__title{
  font-weight:900;
  margin-bottom:8px;
}
.toc a{
  display:block;
  padding:8px 10px;
  border-radius:10px;
  text-decoration:none;
  color:var(--text);
  border:1px solid transparent;
}
.toc a:hover{
  background: var(--soft);
  border-color: var(--border);
}
.article{
  border:1px solid var(--border);
  border-radius:12px;
  background: var(--bg);
  padding: 16px;
}
.article__h1{
  margin-top: 6px;
  margin-bottom: 10px;
}
.article h2{
  margin-top: 18px;
}
.faq{
  display:grid;
  gap:10px;
}
.faq__q{
  width:100%;
  text-align:left;
  border:1px solid var(--border);
  background: var(--bg);
  padding: 12px;
  border-radius: 12px;
  cursor:pointer;
  font-weight: 900;
}
.faq__a{
  border:1px solid var(--border);
  background: var(--soft2);
  padding: 12px;
  border-radius: 12px;
  color: var(--muted);
  font-weight: 700;
  display:none;
}
.faq__q.is-open + .faq__a{ display:block; }